Vehicular internal trimming member including air bag door

The present invention relates to an interior member for a vehicle having an airbag door portion in which the door portion of the airbag device is provided on the interior member for the vehicle.

[0002] Conventional Technology Conventionally, vehicle interior members such as an instrument panel having an airbag door portion, a door trim, and a center pillar have been known, and an example thereof is shown in Japanese Patent Application Laid-Open No. 8-192666. There is.

[0003] In the instrument panel having an airbag door portion disclosed in this publication, the main body portion of the instrument panel having an opening for an airbag door is injection-molded with a thermoplastic resin, and then the airbag door portion is formed. The main body of the instrument panel and the airbag door are integrally molded by so-called two-color molding (double injection molding) in which the (opening) is injection-molded with a thermoplastic elastomer. Also, as a generally known structure, there is an instrument panel to which a separate airbag door (injection molded with a thermoplastic elastomer) is retrofitted.

[0004] However, in an instrument panel having such an airbag door portion, the entire instrument panel is the same without changing the resin of the airbag door portion to the resin of the main body portion. When composed of resin, due to the characteristics of the resin in the main body, the elasticity of the resin in the main body is 6 to 7 times that of the resin (TPO) in the airbag door, and the tensile strength is 1.5 to 2 times. Therefore, when deployed, for example, the breaking force of the H-shaped breaking portion (tier portion) formed on the airbag door portion becomes high at the same thickness, making it difficult for the airbag door portion to deploy and the hinge portion deploying. Sometimes it breaks. If the resin thickness of the fractured portion is made too thin in order to improve this, fillout, stickiness and deformation during molding occur. In particular, in a hard resin instrument panel, unevenness is visible from the design surface side around the thin-walled portion due to weld sink marks, swells, etc., so that the appearance quality deteriorates.

[0005] Further, in order to make the line of the fractured portion and the outer circumference of the airbag door portion completely invisible (invisible type) from the design surface side, a method of thickening the fractured portion at the time of molding and cutting by post-processing is used. is there. However, with this method, it is extremely difficult to make the line of the fractured portion invisible while maintaining a predetermined breaking force. That is, if the resin thickness is reduced, even if the relief groove is provided, the line and swelling feeling of the fractured portion can be seen from the design surface side, the appearance quality on the design cannot be maintained, and the resin thickness is sufficiently reduced. Can't.

[0006] The breaking force of the broken portion (tier portion) formed in the airbag door portion during deployment becomes high, and the airbag door portion becomes difficult to deploy. In order to improve this, the resin of the broken portion is used. If the thickness is too thin, the thin part can be seen from the design surface side, so the problem that the appearance quality deteriorates is that the airbag door part and the main body part of the instrument panel are integrated by two-color molding using different resins. It also occurs in a molded instrument panel or in a broken portion of an instrument panel that is integrated with a locking claw, a screw, or the like after the airbag door portion and the main body portion of the instrument panel are separately molded.

[0007] In consideration of the above facts, the present invention does not deteriorate the appearance quality and breaks the airbag door portion even when the airbag door portion and the main body portion of the vehicle interior member are molded with the same resin. It is an object of the present invention to obtain a vehicle interior member having an airbag door portion capable of reducing the breaking force of the portion to a desired value.

[0008] [0009] [0010] [0011] [0012] [0013] [0014] [Means for Solving the Problems] In the present invention according to claim 1, the airbag door portion and the main body portion are the same. It is an interior member for a vehicle having an airbag door portion integrally molded or separated from the hard resin material of the above, and the tier portion formed on the airbag door portion and the center of the tier portion when the airbag bag body is deployed. It has a pushing-up means for pushing up a portion on both sides or one side of the airbag door portion that sandwiches the portion, and the pushing-up means is separated from the airbag door portion and is arranged below the airbag door portion. A gap is set between the airbag and the lower surface of the airbag door portion, and when the airbag bag body is deployed, the central portion of the tier portion is sandwiched and abutted on both sides or one side of the airbag door portion. It is characterized in that it is a metal plate having protrusions on at least one of the lower surface and the upper surface of the tip portion.

[0015] Therefore, when the airbag bag body is deployed, the impact load from the airbag bag body is separated from the airbag door portion and is disposed below the airbag door portion with the lower surface of the airbag door portion. The tip of the metal plate with a gap between them concentrates on the central part of the tier part and breaks smoothly from the central part of the tier part. As a result, both appearance quality and deployment performance can be achieved at the same time. Further, by using a metal plate, it can be applied to a conventional vehicle interior member.

[0016] The present invention according to claim 2 is an interior member for a vehicle having an airbag door portion in which the airbag door portion and the main body portion are integrally molded or separated from the same hard resin material. It has a tier portion formed on the airbag door portion and a push-up means for pushing up both sides or one side of the airbag door portion that sandwiches the central portion of the tier portion when the airbag bag body is deployed. Is separated from the airbag door portion and is arranged below the airbag door portion and a gap is set between the airbag door portion and the lower surface of the airbag door portion. It is characterized in that it is a metal plate having narrow protrusions on the upper surface of the tip portion that abuts on both sides or one side of the airbag door portion with the central portion of the tier portion interposed therebetween.

[0017] Therefore, when the airbag bag body is deployed, the impact load from the airbag bag body is separated from the airbag door portion and is disposed below the airbag door portion with the lower surface of the airbag door portion. The protrusion of the metal plate with a gap between them concentrates on the central part of the tier part and acts smoothly, and breaks smoothly from the central part of the tier part. At this time, by providing a narrow protrusion on the upper surface of the tip portion of the metal plate, even if the upper surface of the airbag bag body has an uneven shape at the initial stage of deployment, the airbag is surely broken from the central portion of the tier portion. Will be possible.

[0018] The present invention according to claim 3 is an interior member for a vehicle having an airbag door portion in which the airbag door portion and the main body portion are integrally molded or separated from the same hard resin material. It has a tier portion formed on the airbag door portion and a push-up means for pushing up both sides or one side of the airbag door portion that sandwiches the central portion of the tier portion when the airbag bag body is deployed. Is separated from the airbag door portion and is arranged below the airbag door portion and a gap is set between the airbag door portion and the lower surface of the airbag door portion. A metal plate having a tip portion that abuts on both sides or one side of the airbag door portion with the central portion of the tier portion interposed therebetween, and the hinge portion of the metal plate is from the hinge portion of the airbag door portion. Is also offset to the tier portion side, and the fixed portion of the metal plate and the portion on the tier portion side of the hinge portion of the metal plate have high rigidity with respect to the hinge portion of the metal plate. It is supposed to be.

[0019] Therefore, when the airbag bag body is deployed, the impact load from the airbag bag body is separated from the airbag door portion and is disposed below the airbag door portion with the lower surface of the airbag door portion. The tip of the metal plate with a gap between them concentrates on the central part of the tier part and breaks smoothly from the central part of the tier part. As a result, both appearance quality and deployment performance can be achieved at the same time. Further, since the metal plate can prevent the airbag bag body from directly contacting the hinge portion of the airbag door portion when the airbag bag body is deployed, damage to the hinge portion of the airbag door portion by the airbag bag body can be prevented. it can.

[0020] [0021] [0022] [0023] [0024] [0025] [0026] [0027] [0028] [0029] [0030] [0031] [0032] [0033] [0034] [0035] [0036] [0037] [Embodiments of the Invention] A first embodiment of a vehicle interior member having an airbag door portion of the present invention will be described with reference to FIGS. 1 to 4.

[0038] In the figure, the arrow FR indicates the vehicle forward direction, and the arrow UP indicates the vehicle upward direction. As shown in FIG. 1, an airbag device 12 is arranged inside the passenger seat side of the instrument panel 10 as an interior member for a vehicle provided in the vehicle interior of the vehicle. The airbag case 14 of the airbag device 12 is fixed to an instrument panel reinforcement (not shown), and the inflator 16 and the airbag bag body 18 in a folded state are stored in the airbag case 14. Has been done.

[0039] Further, the portion of the instrument panel 10 that substantially faces the airbag case 14 is the airbag door portion 20, and the portion of the instrument panel 10 other than the airbag door portion 20 is the main body portion 22. There is. These airbag doors 20 and main body 22 are made of TSOP [epolymer (rubber) and PP (polypropylene) as hard resin by broiling (a technology for making high molecular weight multi-component materials that can be expected to have a synergistic effect), and further. Composite reinforced by adding talc, has impact resistance and rigidity, has good fluidity, and is suitable for thin-walled products. Low specific gravity PP resin, for example, bending elasticity 1500 ~ 3000MPa], PP resin, PC / ABS Consists of based resin, modified PPO resin, PC / PBT resin, ABS resin, PC resin, ASG resin, TPO resin, TPE resin, TPU resin, PC / modified PS resin, etc. ..

[0040] When the airbag device 12 detects a sudden deceleration of the vehicle by a mechanical or electrical acceleration sensor (not shown) or the like, the inflator 16 in the airbag case 14 operates and is folded into the airbag case 14. The airbag bag body 18 housed in the airbag is inflated toward the airbag door portion 20 of the instrument panel 10. The airbag bag body 18 is adapted to press the airbag door portion 20 of the instrument panel 10 to open the airbag door portion 20 and deploy it in the vehicle interior. Since a conventionally known general configuration can be applied to the airbag device 12, detailed description of the airbag device 12 will be omitted in the present embodiment.

As shown in FIG. 3, thin-walled tier portions 24 are formed in an H shape in a plan view at a substantially central portion in the front-rear direction and both ends in the left-right direction of the airbag door portion 20, and the airbag. When the bag body is deployed, the airbag door portion 20 opens both front and rear to expand the airbag bag body into the passenger compartment.

As shown in FIG. 2, the cross section of the tier portion 24 of the airbag door portion 20 is V-shaped. Further, the airbag door portion 20 has protrusions 28 and 30 as means for pushing up on both sides of the tier portion 24 in the front-rear direction of the vehicle sandwiching the central portion 24A, and these protrusions 28 and 30 are projected downward. Is integrally molded with the airbag door portion 20. Therefore, when the airbag bag body is deployed, the deployed airbag bag body abuts on the lower surfaces 28A and 30A of the protrusions 28 and 30 and presses the protrusions 28 and 30 upward (in the direction of arrow A in FIG. 2). It has become.

As shown in FIG. 4, the protrusions 28 and 30 are formed in a grid pattern by narrow ribs 32 extending in the vehicle front-rear direction and narrow ribs 34 extending in the vehicle width direction. The width T1 of these ribs 32 and 34 is set to 1/2 or less of the wall thickness T of the airbag door portion 20 shown in FIG. 2 to prevent sink marks.

[0044] Further, the width W1 and the length L1 of the protrusions 28 and 30 are 5% to 20% of the total width W and the total length L of the front door portion 20A and the rear door portion 20B of the airbag door portion 20 shown in FIG. It is set to each degree. Therefore, the deflection of the airbag door portion 20 in the width direction and the length direction is not extremely impaired by the protrusions 28 and 30, and the airbag door portion 20 is in the width direction when the airbag bag body is deployed. And by bending in the length direction, it is surely broken from the central portion 24A of the tier portion 24.

As shown in FIG. 1, thin hinge portions 26 are formed at both ends of the airbag door portion 20 in the front-rear direction. Therefore, when the airbag door portion 20 is pressed by the expanding airbag bag body 18 when the airbag is deployed, the airbag door portion 20 is cleaved along the tier portion 24, and the cleaved front door portion 20A and the rear door portion 20B are separated from each other. An opening that allows the airbag bag body 18 to be deployed into the vehicle interior is formed by rotating around the hinge portion 26.

As shown in FIGS. 2 and 4, the corners 28B, 30B, 28C, 30C, 28D, 30D, 28E of the protrusions 28 and 30 that come into contact with the airbag bag 18 when the airbag bag is deployed. , 30E is chamfered to protect the airbag bag body 18.

Next, the operation of the first embodiment of the present invention will be described. In the first embodiment, when the airbag bag body is deployed, the deployed airbag bag body 18 abuts on the lower surfaces 28A and 30A of the protrusions 28 and 30 and moves the protrusions 28 and 30 upward (in the direction of arrow A in FIG. 2). ) Press. Therefore, an impact load momentarily acts on the protrusions 28 and 30 from the airbag bag body 18, and the airbag smoothly breaks from the central portion 24A of the tier portion 24. As a result, even if the tier portion 24 is thick, it can be easily broken, so that it is possible to achieve both deployment performance and appearance quality (invisible).

[0048] Further, the load on the hinge portion 26 can be reduced. Further, since the airbag door portion 20 can be made of a highly rigid hard material, it is possible to prevent stickiness and deformation. In addition, it is possible to achieve both appearance quality and deployment performance with a simple configuration in which protrusions 28 and 30 are provided on the airbag door portion 20.

Further, since the protrusions 28 and 30 are formed by the ribs 32 and the ribs 34 that are integrally molded with the airbag door portion 20, the protrusions 28 and 30 can be formed without the need to attach separate parts, and the ribs 32 can be formed. Since the width (T1) of the rib 34 and the rib 34 is narrower than the thickness (T) of the general part of the airbag door 20 (T1 T / 2), the rib 32, Since the occurrence of sink marks due to 34 can be suppressed, the appearance quality is not deteriorated.

[0050] In the first embodiment, as shown in FIG. 4, the protrusions 28 and 30 are formed in a grid pattern by the narrow ribs 32 extending in the vehicle front-rear direction and the narrow ribs 34 extending in the vehicle width direction. Although formed, the shapes of the protrusions 28 and 30 are not limited to this, and may be other shapes such as an E shape as shown in FIG. 5, for example.

Further, in the first embodiment, as shown in FIG. 3, the tier portion 24 is formed into an H shape in a plan view, but the shape of the tier portion 24 is not limited to this, and for example, FIG. 6 ( Other shapes such as a linear shape as shown in A), a shape in which two Y-shapes are overlapped as shown in FIG. 6 (B), and an X-shape as shown in FIG. 6 (C) may be used. Further, as shown in FIG. 6D, when the tier portion 24 has an X-shape, protrusions 29 and 31 may be formed with the tier portion 24 sandwiched in the vehicle width direction as well. Further, as shown in FIG. 6 (E), when the tier portion 24 has a U-shape, only the protrusion 28 may be formed on one side of the tier portion 24.

Next, a second embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIGS. 7 to 9.

[0053] The same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 7, in the second embodiment, a metal plate 36 made of a metal such as aluminum, iron, or stainless steel is located below the front door portion 20A and the rear door portion 20B of the airbag door portion 20, respectively. , 38 are arranged. The front end portion 36A of the metal plate 36 is fastened together with the airbag case 14 and the main body portion 22 of the instrument panel 10 by a bolt 40 penetrating the mounting hole 39 formed in the metal plate 36. The rear end portion 38A of the metal plate 38 is fastened together with the airbag case 14 and the main body portion 22 of the instrument panel 10 by a bolt 42 penetrating the mounting hole 41 formed in the metal plate 38. Further, the rear tip portion 36B of the metal plate 36 and the front tip portion 38B of the metal plate 38 are bent downward in a rectangular shape, respectively, to form protrusions 44 and 46 as pushing-up means. The protrusions 44 and 46 of the above are designed to abut on both front and rear portions of the airbag door portion 20 sandwiching the central portion 24A of the tier portion 24 when the airbag bag body is deployed.

As shown in FIG. 9, in a plan view, the metal plate 36 has a trapezoidal shape with a narrow rear portion, and the metal plate 38 has a trapezoidal shape with a narrow front portion. Further, the width W2 and the length L2 of the protrusions 44 and 46 are about 5% to 20% of the total width W and the total length L of the front door portion 20A and the rear door portion 20B of the airbag door portion 20 shown in FIG. 3, respectively. It is set. Therefore, the deflection of the airbag door portion 20 in the width direction and the length direction is not extremely impaired by the protrusions 44 and 46, and the airbag door portion 20 is in the width direction when the airbag bag body is deployed. And by bending in the length direction, it is surely broken from the central portion 24A of the tier portion 24.

Next, the operation of the second embodiment will be described. In the second embodiment, when the airbag bag body is deployed, the deployed airbag bag body 18 abuts on the lower surfaces 44A and 46A of the protrusions 44 and 46 of the metal plates 36 and 38, as shown in FIG. Press the protrusions 44 and 46 upward (in the direction of arrow A in FIG. 8). Therefore, an impact load is momentarily applied from the airbag bag body 18 to the front and rear sides of the central portion 24A of the tier portion 24 of the airbag door portion 20 via the protrusions 44 and 46. Therefore, the airbag door portion 20 smoothly breaks from the central portion 24A of the tier portion 24. As a result, even if the tier portion 24 is thick, it can be easily broken, so that it is possible to achieve both deployment performance and appearance quality (invisible).

[0057] In the second embodiment, the protrusions 44 and 46 are formed on the lower surface side of the metal plates 36 and 38, that is, on the airbag bag body 18 side. Instead, the metal plate 36 is formed as shown in FIG. , 38 may be formed on the upper surface side, that is, on the airbag door portion 20 side. In this case, by providing the protrusions 44 and 46 on the upper surfaces of the tips 36B and 38B of the metal plates 36 and 38, the upper surface 18A of the airbag bag 18 is uneven at the initial stage of deployment as shown in FIG. Even if it has a shape, the airbag bag body 18 surely contacts the lower surfaces of the flat metal plates 36 and 38 and pushes up the protrusions 44 and 46 in the direction of arrow A, so that the tier portion 24 is surely It is possible to break from the central part 24A. Further, as shown in FIG. 11, when the protrusions 44 and 46 are formed on the upper surface side of the metal plates 36 and 38, that is, on the airbag door portion 20 side, the plan view shape of the metal plates 36 and 38 is made rectangular. Also, the protrusions 44 and 46 can be reliably brought into contact with both sides of the airbag door portion in the front-rear direction of the vehicle, which sandwich the central portion of the tier portion. Further, in the second embodiment, the hinge portion is not particularly formed on the metal plates 36 and 38, but the metal plates 36 and 38 are moved upward or downward at a portion substantially opposite to the hinge portion 26 of the airbag door portion 20. It may be bent in a U shape toward the surface and used as a hinge part.

Next, a third embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIGS. 12 and 13.

[0059] The same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 12, in the third embodiment, a metal plate 48 made of a metal such as aluminum, iron, or stainless steel is located below the front door portion 20A and the rear door portion 20B of the airbag door portion 20, respectively. , 50 are arranged. The front end 48A of the metal plate 48 is fixed to the airbag case 14 by bolts 51 and nuts 52, and the rear end 50A of the metal plate 50 is fixed to the airbag case 14 by bolts 53 and nuts 54. .. The hinge portions 48B and 50B of the metal plates 48 and 50 are thin. These hinge portions 48B and 50B are offset downward with respect to the hinge portion 26 of the airbag door portion 20 (offset amounts H1 and H2), and are offset toward the central portion 24A of the tier portion 24. (Offset amount K1, K2). Further, the parts of the metal plates 48 and 50 between the hinge portions 48B and 50B and the front end portions 48A and the rear end portion 50A which are the mounting portions and between the hinge portions 48B and 50B and the tip portions 48C and 50C. The part has higher rigidity than the hinge parts 48B and 50B. That is, only the hinge portions 48B and 50B are thin and have low rigidity.

Next, the operation of the third embodiment will be described. In the third embodiment, when the airbag bag body is unfolded, as shown in FIG. 13, the unfolded airbag bag body 18 comes into contact with the lower surfaces of the metal plates 48 and 50, and the tips of the metal plates 48 and 50 come into contact with each other. Press 48C and 50C upward (in the direction of arrow A in Fig. 13). Therefore, the impact load is momentarily applied from the airbag bag body 18 to the front and rear sides of the central portion 24A of the tier portion 24 of the airbag door portion 20 via the highly rigid tip portions 48C and 50C of the metal plates 48 and 50. Since it acts, the airbag door portion 20 smoothly breaks from the central portion 24A of the tier portion 24. As a result, even if the tier portion 24 is thick, it can be easily broken, so that it is possible to achieve both deployment performance and appearance quality (invisible).

[0062] Further, the hinge portions 48B and 50B of the metal plates 48 and 50 are offset from the hinge portion 26 of the airbag door portion 20 toward the central portion 24A of the tier portion 24, and the hinges of the metal plates 48 and 50 are hinged. Since the part between the parts 48B and 50B and the front end 48A and the rear end 50A that are the mounting parts is highly rigid, the hinge parts 48B and 50B of the metal plates 48 and 50 and the front end 48A and the rear end 48A are rear. Since the portion between the end portion 50A and the airbag bag body 18 can prevent the airbag bag body 18 from directly contacting the hinge portion 26 of the airbag door portion 20 when the airbag bag body is deployed, the airbag door by the airbag bag body 18 can be prevented. It is possible to prevent damage such as cracking of the hinge portion 26 of the portion 20.

[0063] In the third embodiment, the hinge portions 48B and 50B of the metal plates 48 and 50 are made thin, but instead, as shown in FIG. 14, the hinges of the metal plates 48 and 50 are hinged. The portions 48B and 50B may have other configurations such as bending the metal plates 48 and 50 upward in a U shape.

[0064] Next, a fourth embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIG.

[0065] The same members as those in the third embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 15, in the fourth embodiment, the breaking force of a metal such as aluminum, iron, or stainless steel is applied below the front door portion 20A and the rear door portion 20B of the airbag door portion 20, respectively. High door hinge protection plates 56 and 58 are arranged. The front portion 56A of the door hinge portion protection plate 56 is fixed to the airbag case 14 by bolts 51 and nuts 52, and the rear portion 58A of the door hinge portion protection plate 58 is fixed to the airbag case 14 by bolts 53 and nuts 54. ing. Further, the rear portion 56B of the door hinge portion protective plate 56 and the front portion 58B of the door hinge portion protective plate 58 project from the hinge portion 26 of the airbag door portion 20 toward the central portion 24A of the tier portion 24, respectively. It is extended to a position close to the back surface of the bag door portion 20. The extension portions of the rear portion 56B of the door hinge portion protection plate 56 and the front portion 58B of the door hinge portion protection plate 58 may be plastically deformed to some extent by the impact load from the airbag bag body 18. ..

Next, the operation of the fourth embodiment will be described. In the fourth embodiment, the rear portion 56B and the front portion 58B of the door hinge portion protective plates 56 and 58 project from the hinge portion 26 of the airbag door portion 20 toward the central portion 24A of the tier portion 24, respectively, and further, the airbag door Since it is extended to a position close to the back surface of the portion 20, it is possible to prevent the airbag bag body 18 from directly contacting the hinge portion 26 of the airbag door portion 20 when the airbag bag body is deployed. It is possible to prevent the hinge portion 26 from being damaged by the body 18. Further, since the hinge portion 26 of the airbag door portion 20 can be protected, it is easy to break from the central portion 24A of the tier portion 14 having a relatively low strength.

[0068] Next, a fifth embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIG.

[0069] The same members as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 16, in the fifth embodiment, the airbag door portion 20 as the base material of the airbag door portion and the main body portion 22 as the base material of the main body portion are made of the same hard resin material. On the surface (design surface) of the integrally molded base material 60, for example, a skin 62 made of PVC, TPO, fabric, or the like is arranged by insert molding or pasting molding. On the back surface (base material) side or the front surface side of the skin 62, for example, a thin-walled tier portion 64 is formed along the tier portion 24 of the base material, and the skin 62 is the base material 60. It covers the surface (design surface).

Next, the operation of the fifth embodiment will be described. In the fifth embodiment, when the airbag bag body is deployed, the deployed airbag bag body 18 comes into contact with the lower surfaces 28A and 30A of the protrusions 28 and 30 and presses the protrusions 28 and 30 upward. Therefore, an impact load momentarily acts on the protrusions 28 and 30 from the airbag bag body 18, and the tier portion 24 is smoothly broken from the central portion 24A, and the skin 62 is also smoothly broken from the tier portion 60. As a result, even if the tier portion 24 is thick, it can be easily broken, so that it is possible to achieve both deployment performance and appearance quality (invisible).

[0072] Further, the load on the hinge portion 26 can be reduced. Further, since the airbag door portion 20 can be made of a highly rigid hard material, it is possible to prevent stickiness and deformation. In addition, with a simple configuration in which protrusions 28 and 30 are provided on the airbag door portion 20, it is possible to achieve both deployment performance and suppression of deterioration in appearance quality (weld sink marks and wavy irregularities of the base material) transferred to the skin 62. it can. Further, it does not require a complicated mold structure as compared with two-color molding, and does not require post-processing of the tier portion 24 of the base material 60.

[0073] In the case of skin insert molding, in addition to the single-layer skin 62 shown in FIG. 17 (A), the two-layer skin 62 shown in FIG. 17 (B) and 3 shown in FIG. 17 (C). Layer epidermis 62 may be used.

[0074] In the case of paste molding, in addition to the single-layer skin 62 shown in FIG. 18 (A), the skin 62 with the foam layer 63 shown in FIG. 18 (B) may be used.

[0075] Next, a sixth embodiment of the vehicle interior member having the airbag door portion of the present invention will be described with reference to FIG.

[0076] The same members as those in the fifth embodiment are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 19, in the sixth embodiment, for example, a foam layer 70 made of urethane foam is integrally foamed between the base material 60 and the skin 62.

Next, the operation of the sixth embodiment will be described. In the sixth embodiment, when the airbag bag body is deployed, the deployed airbag bag body 18 comes into contact with the lower surfaces 28A and 30A of the protrusions 28 and 30 and presses the protrusions 28 and 30 upward. Therefore, an impact load momentarily acts on the protrusions 28 and 30 from the airbag bag body 18, and the tier portion 24 is smoothly broken from the central portion 24A, and the foam layer 70 and the skin 62 are also smoothly broken. As a result, even if the tier portion 24 is thick, it can be easily broken, so that it is possible to achieve both deployment performance and appearance quality (invisible). In addition, the load on the hinge portion 26 can be reduced. Further, since the airbag door portion 20 can be made of a highly rigid hard material, it is possible to prevent stickiness and deformation. In addition, with a simple configuration in which protrusions 28 and 30 are provided on the airbag door portion 20, it is possible to achieve both deployment performance and suppression of deterioration in appearance quality (weld sink marks and wavy irregularities of the base material) transferred to the skin 62. it can. Further, as compared with the conventional integrally foamed type, the fastening parts of the reinforcing iron plate and the separate door base material are not required, and the fastening work is also unnecessary.

[0079] [0080] [0081] [0082] [0083] [0084] [0085] [0086] [0087] [0088] [0089] [0090] Although described in detail, the present invention is not limited to such embodiments, and it is clear that various other embodiments are possible within the scope of the present invention. For example, the cross-sectional shape of the tier portion 24 may be another shape such as a U shape in addition to the V shape.

[0091] Further, the vehicle interior member having the airbag door portion of the present invention can be applied not only to the instrument panel but also to a door trim, a center pillar, a garnish, a steering wheel and the like.

[0093] [0094] [0095] [Effect of the Invention] In the present invention according to claim 1, the airbag door portion and the main body portion are integrally molded or separated from the same hard resin material. It is an interior member for a vehicle having an airbag door portion, and pushes up both sides or one side of the tier portion formed on the airbag door portion and the airbag door portion that sandwiches the central portion of the tier portion when the airbag bag body is deployed. It has a push-up means, and the push-up means is separated from the airbag door portion, and is arranged below the airbag door portion, and a gap is set between the push-up means and the lower surface of the airbag door portion. Because it is a metal plate with protrusions on at least one of the lower surface and the upper surface of the tip that abuts on both sides or one side of the airbag door, sandwiching the center of the tier when the airbag bag is deployed. Even when the airbag door portion and the main body portion of the interior member for a vehicle are molded with the same resin, the appearance quality is not deteriorated and the breaking force of the broken portion of the airbag door portion is reduced to a desired value. It has an excellent effect of being able to. In addition, it has an excellent effect of preventing stickiness and deformation. Further, it has an excellent effect that it can be applied to a conventional vehicle interior member.

[0096] The present invention according to claim 2 is an interior member for a vehicle having an airbag door portion in which the airbag door portion and the main body portion are integrally molded or separated from the same hard resin material. It has a tier portion formed on the airbag door portion and a pushing-up means for pushing up both sides or one side of the airbag door portion that sandwiches the central portion of the tier portion when the airbag bag body is deployed. The pushing-up means is an airbag. It is separated from the door part, and is arranged below the airbag door part, and a gap is set between it and the lower surface of the airbag door part. When the airbag bag body is deployed, the central part of the tier part is sandwiched between them. Since it is a metal plate with narrow protrusions on the upper surface of the tip that contacts both sides or one side of the airbag door, the airbag door and main body of the vehicle interior member are molded with the same resin. Even in this case, it has an excellent effect that the breaking force of the broken portion of the airbag door portion can be reduced to a desired value without deteriorating the appearance quality. In addition, it has an excellent effect of preventing stickiness and deformation. Further, even if the upper surface of the airbag bag body has an uneven shape, it has an excellent effect that it can be reliably broken from the central portion of the tier portion.

[0097] The present invention according to claim 3 is an interior member for a vehicle in which the airbag door portion and the main body portion have an airbag door portion integrally molded or separated from the same hard resin material, and the airbag door It has a tier portion formed in the portion and a pushing-up means for pushing up a portion on both sides or one side of the airbag door portion that sandwiches the central portion of the tier portion when the airbag bag body is deployed. It is separated and is arranged below the airbag door part, and a gap is set between it and the lower surface of the airbag door part. When the airbag bag body is deployed, the central part of the tier part is sandwiched between the airbags. A metal plate having a tip that abuts on both sides or one side of the door, and the hinge part of the metal plate is offset toward the tier side of the hinge part of the airbag door, and the metal plate Since the fixed part of the metal plate and the part on the tier side of the hinge part of the metal plate are highly rigid with respect to the hinge part, the airbag door part and the main body part of the vehicle interior member are molded with the same resin. Even in this case, it has an excellent effect that the breaking force of the broken portion of the airbag door portion can be reduced to a desired value without deteriorating the appearance quality. In addition, it has an excellent effect of preventing stickiness and deformation. Further, it has an excellent effect that the hinge portion of the airbag door portion can be prevented from being damaged by the airbag bag body.

[0098] [0099] [0100] [0101] [0102] [0103] [0104] [0105] [0106] [Simple explanation of drawings] [Fig. 1] Enlarged cross section along line 1-1 in Fig. 3. It is a figure.

FIG. 2 is an enlarged side sectional view showing a main part of a vehicle interior member having an airbag door portion according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing an instrument panel as an interior member for a vehicle having an airbag door portion according to the first embodiment of the present invention, as viewed from diagonally rearward of the vehicle.

FIG. 4 is an enlarged plan view showing a protrusion of a vehicle interior member having an airbag door portion according to the first embodiment of the present invention.

FIG. 5 is an enlarged plan view showing a protrusion of a vehicle interior member having an airbag door portion according to a modified example of the first embodiment of the present invention.

6A to 6E are schematic plan views showing a positional relationship between a protrusion and a tier portion of a vehicle interior member having an airbag door portion according to a modified example of the first embodiment of the present invention. ..

FIG. 7 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a second embodiment of the present invention.

FIG. 8 is an operation explanatory view showing an interior member for a vehicle having an airbag door portion according to a second embodiment of the present invention.

FIG. 9 is a plan view showing a metal plate of a vehicle interior member having an airbag door portion according to a second embodiment of the present invention.

FIG. 10 is a side sectional view corresponding to FIG. 8 showing an interior member for a vehicle having an airbag door portion according to a modified example of the second embodiment of the present invention.

FIG. 11 is a plan view showing a metal plate of an interior member for a vehicle having an airbag door portion according to a modified example of the second embodiment of the present invention.

FIG. 12 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a third embodiment of the present invention.

FIG. 13 is an operation explanatory view showing an interior member for a vehicle having an airbag door portion according to a third embodiment of the present invention.

FIG. 14 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a modified example of the third embodiment of the present invention.

FIG. 15 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a fourth embodiment of the present invention.

FIG. 16 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a fifth embodiment of the present invention.

17 (A) to 17 (C) are cross-sectional views showing a skin formed by skin insert molding of an interior member for a vehicle having an airbag door portion according to the present invention.

18 (A) and 18 (B) are cross-sectional views showing a skin formed by laminating molding of an interior member for a vehicle having an airbag door portion according to the present invention.

FIG. 19 is a side sectional view corresponding to FIG. 1 showing an interior member for a vehicle having an airbag door portion according to a sixth embodiment of the present invention.

[Code description] 10 Instrument panel (interior parts for vehicles) 12 Airbag device 16 Inflator 18 Airbag bag body 20 Airbag door part 20A Front door part 20B Rear door part 22 Main body part 24 Tier part 24A Center of tier part Part 26 Airbag Door Hinge 28 Protrusion (Pushing Means) 29 Protrusion (Pushing Means) 30 Protrusion (Pushing Means) 31 Protrusion (Pushing Means) 32 Ribs 34 Ribs 36 Metal Plate 38 Metal Plate 44 Protrusions (Pushing Means) 46 Protrusion (pushing means) 48 Metal plate 48B Metal plate hinge 48C Metal plate tip 50 Metal plate 50B Metal plate hinge 50C Metal plate tip 56 Door hinge protection plate 58 Door hinge protection plate 60 Base material 62 Skin 64 Skin tier 70 Foam layer