Stop structure for use in a rotary shaft

Stop structure for the shaft

The present invention relates to a stop structure, and more particularly to a stop structure for a rotating shaft.

According to the general consumer electronics products, such as portable computers, mobile phones, electronic dictionaries and portable audio and video playback devices, etc., it is generally placed in the lower part of the body, and by the axis and The cover body of the upper half is coupled so that the cover body portion can be opened and closed with respect to the body portion. Therefore, the shaft is also a major factor in determining the quality of the above products.

In order to provide an electronic product with a limit of opening and closing angle, a stop structure is usually provided between the movable member and the fixed member of the rotating shaft. As shown in FIG. 1 , in the case of a series connection, that is, a so-called axial friction rotating shaft, the rotating shaft usually protrudes from a periphery of a bracket 10 side with a stopper, such as a wedge-shaped projection 101, which has an upright position. The retaining edge 101a is followed by a downwardly inclined beveled surface 101b. The bracket 10 is adjacent to a positioning piece 20, and a peripheral portion thereof is provided with a flange portion, such as a fan-shaped flange 201. The positioning piece 20 and the bracket 10 are traversed by a pivot 30, so that the bracket 10 can be rotated on the pivot 30. The positioning piece 20 is sleeved on the pivot 30. Therefore, when the bracket 10 rotates, the retaining edge 101a of the wedge-shaped projection 101 can abut against the sector-shaped flange 201, thereby limiting the angle of rotation of the bracket 10.

Please refer to FIG. 2 , which is a partial enlarged view of the bracket 10 when it is adjacent to the positioning piece 20 . As described above, when the wedge-shaped protrusion 101 rotates to form a stop function with the sector-shaped flange 201 , When the strength of the wedge-shaped bump 101 is exceeded, the deformation of the bump 101 or the flange 201 is often caused, for example, the break of the bump 101, that is, the stop effect is lost, thereby causing automatic falling when the split is opened (free down) The lack of). Therefore, how to prevent the bump or the flange from being damaged when the force is applied beyond the force set by the stop structure, and the normal operation after the recovery is a difficult problem to be overcome by the relevant industry.

In view of this, the applicant of this case has been engaged in the design of the shaft and the experience of production and sales for many years. He has devoted himself to research and can overcome the above-mentioned problem that the stop structure for the shaft is easy to be excessively applied by the user, resulting in the loss of the wedge-shaped bump. After repeated experiments and tests, the "stop structure for the shaft" of the case was developed.

The main purpose of the present invention is to provide a stop structure for a rotating shaft that does not cause the stop force to be damaged due to the applied force exceeding the set value.

For the purpose of the foregoing, the technical means adopted in the present invention is to provide a stop structure for a rotating shaft, comprising: a rotating member, a shaft hole is axially opened, and a convex portion is protruded from a periphery of the side surface of the shaft hole. Having a standing front retaining edge, the front retaining edge extends an upwardly inclined beveled surface, which is adjacent to the rear end of the rearmost stop; and a positioning member adjacent to the rotating member, the axial direction of which opens a perforation and the periphery a flange portion is disposed in the moving range of the bump; when the rotating member rotates, the front retaining edge abuts against the flange portion, that is, the opening and closing angle is limited; The set value of the bump, the bottom surface of the flange portion passes over the front retaining edge, and climbs the beveled surface, thereby dispersing the collision force formed by the excessive force.

Another technical means adopted in the present invention is to provide a stop structure for a rotating shaft, comprising: a rotating member, a shaft hole is axially opened, a convex portion is protruded from a periphery of the side surface of the shaft hole, and a front portion is provided in front of the shaft hole a retaining edge, the front retaining edge extends an upwardly inclined beveled surface that is adjacent to the rear end of the rearmost stop; and a pivot shaft that passes through the shaft hole, the pivot shaft protruding radially to abut In the rotating member, and the flange portion is within the moving range of the bump; when the rotating member rotates, the front retaining edge abuts against the flange portion, that is, the opening and closing angle is limited; Exceeding the set value of the bump, the bottom surface of the flange portion passes over the front retaining edge and climbs up the beveled surface, thereby dispersing the collision force formed by the excessive force.

In order to further disclose the specific technical content of the present invention, first, please refer to the drawings, wherein FIG. 1 is an exploded perspective view of a conventional rotating shaft, FIG. 2 is a schematic diagram of a stopping structure of the rotating shaft shown in FIG. 1, and FIG. 3 is a stop structure of the present embodiment. The three-dimensional exploded view, Figure 4 is a schematic view of the stop structure in the normal use state, Figure 5 is a schematic view of the stop structure in an abnormal state, Figure 6 is a three-dimensional exploded view of the stop structure for the shaft, Figure 7 An exploded perspective view of another embodiment of the stop structure.

As shown in FIG. 3 and FIG. 4, basically, the stop structure for the rotating shaft of the present invention is composed of a rotating member 1 and a positioning member 2. The "rotation" and "positioning" do not limit the operating states of the two components, that is, the rotating member 1 can be kept in a fixed state, but the positioning member 2 generates a rotating motion.

The rotating member 1 is a single body, and a shaft hole 11 is defined in the axial direction. A protruding block 12 is protruded from the periphery of the side surface of the shaft hole 11. The protruding block 12 has a front low rear height and a front portion thereof The retaining edge 121 extends behind the front retaining edge 121 with an upwardly inclined beveled surface 122 that connects the rearmost rearmost stop 123. Wherein, the intersection of the front rib 121 and the beveled surface 122 has a chamfer 124, so that the flange portion 22 can enter the bevel plane 122 by the chamfer 124 if the force is exceeded when the force is exceeded. .

The positioning member 2 is also a piece, and a through hole 21 is defined in the axial direction, and a flange portion 22 is provided on the periphery thereof, for example, a fan-shaped flange, and the flange portion 22 is located within the moving range of the protrusion 12, thereby forming Block effect. The shaft hole 11 of the rotating member 1 and the through hole 21 of the positioning member 2 are traversed by a pivot 3 (refer to FIG. 6), so that the positioning member 2 abuts the rotating member 1 and the flange portion 22 is attached thereto. Rotating the surface of the member 1. The shaft hole 11 of the rotating member 1 and the through hole 21 of the positioning member 2 are traversed by the pivot 3, and the shaft hole 11 is implemented as a circular hole, and the through hole 21 is a non-circular hole and is connected with the pivot 3 Corresponding to the cross section; that is, if the pivot 3 is in a fixed state, the positioning member 2 that is sleeved thereto is also in a fixed state.

Therefore, as shown in FIG. 4, when the rotating member 1 rotates with the opening of an electronic product cover portion, the bump 12 also rotates synchronously, and when the front retaining edge 121 abuts against the end of the flange portion 22 , that is, the limit of the opening angle.

Referring to FIG. 5 , if the applied force exceeds the receiving force set by the protrusion 12 , that is, when an abnormal state occurs, the bottom surface of the flange portion 22 will pass over the front retaining edge 121 and climb the inclined surface 122 . For example, the collision force formed by the excessive force can be dispersed to avoid damage to the bump 12.

Therefore, when the user accidentally cuts the angle of the electronic product beyond the designed maximum angle, the beveled surface 122 is cushioned by the flange portion 22 without causing damage to the rotating shaft, particularly the stop structure. . Therefore, when the user perceives that the opening angle has exceeded the design maximum angle, the user only needs to reversely pull back to the normal operating angle range to operate normally without damaging the torque and related functions of the rotating shaft.

As shown in FIG. 6 , a schematic diagram of the stop structure of the present invention is applied to the rotating shaft, wherein the rotating member 1 radially extends a connecting piece 13 , and the connecting piece 13 is laterally connected to an engaging portion 14 , and the electronic device cover The fixing frame 9 of the portion is combined such that the rotating member 1 is substantially a bracket.

The pivot 3 sequentially passes through the through hole 21 of the positioning member 2, the shaft hole 11 of the rotating member 1, the at least one friction plate 4, a cam device 5, and at least one elastic body 6, and finally the one end seal member 7, for example, is prevented from coming off. The nut is combined with the pivot 3 to form a shaft with automatic locking and opening and closing angle restrictions. The cam device 5 is composed of a latching rotating member 51 and a latching fixing member 52. The engaging surfaces of the two members are oppositely provided with a convex portion and a concave portion, and the locking rotating member 51 and the locking fixing member 52 are pivoted. 3 is traversed, and the locking rotating member 51 is fixed to the other side of the rotating member 1 so as to rotate synchronously with the rotating member 1 for the purpose of automatic locking, but this is a prior art, and is not intended herein. Narration.

When the elastic body 6 is implemented, it is preferably a disc-shaped elastic piece, but it is not limited thereto, and it is also required to use a spring or a wave-shaped elastic piece.

In order to increase the structural stress of the engaging portion 14 of the rotating member 1, an auxiliary rotating member 8 is disposed between the rear of the elastic body 6 and the end seal member 7, and a through hole 81 is defined in the center axial direction for the pivot shaft 3. Through the traversing, the auxiliary rotating member 8 radially extends a turning portion 82 so as to be coupled to the engaging portion 14 so that the rotating member 1 and the auxiliary rotating member 8 can rotate synchronously with the fixing frame 9. In order to reduce the wear of the auxiliary rotating member 8, a friction plate 4 is disposed on each of the two sides, and at least one elastic body 6 is disposed between the end seal member 7.

As shown in FIG. 7 , it is an exploded perspective view of another embodiment of the stop structure of the present invention, wherein the overall structure of the rotating member 1 is the same as that of the foregoing embodiment, and details are not described herein. The creation feature of the embodiment is that, as previously mentioned, the positioning member 2 is fixed to the pivot 3, and therefore, in this embodiment, the positioning member is omitted, and a flange portion 31, such as a fan-shaped convex, is directly used. The edge is directly protruded radially from the pivot, and the same effect can be obtained.

Therefore, through the implementation of the present case, the gain of the effect is that after the force applied exceeds the bearing force set by the bump of the stop structure, the bottom surface of the flange of the positioning member or the pivot will pass before the bump Retaining the edge and climbing the beveled surface to disperse the collision force formed by the excessive force to avoid damage to the bump. When the stop structure is in an abnormal state, only the reverse rotation is required, so that the rotating member is pulled back to the normal operating angle range, and the normal operation can be performed without damaging the torque and related functions of the rotating shaft, thereby effectively increasing The service life of the shaft is one of the best things that has never been seen before.

The disclosure of the present invention is a preferred embodiment. Any change or modification of the present invention originating from the technical idea of the present invention and being easily inferred by those skilled in the art will not deviate from the scope of patent rights of the present invention.

<p>Rotating piece 1</p><p>Shaft hole 11</p><p>Bump 12</p><p>Front rim 121</p><p>Oblique facet 122</p><p>Rear stop 123</p><p>Chamfer 124</p><p></p><p>Connection Department 14</p><p>Positioning 2</p><p>Perforation 21</p><p>Flange 22</p><p>Pivot 3</p><p>Flange 31</p><p>Friction plate 4</p><p>Cam device 5</p><p>Locking screw 11</p><p>Locking fixture 52</p><p>Elastomer 6</p><p>End seals 7</p><p>Auxiliary rotating parts 8</p><p>Through hole 81</p><p>Turning section 82</p><p>Fixing frame 9</p><p>Bracket 10</p><p>Wedge bump 101</p><p>Blocking edge 101a</p><p>Ramp surfacing 101b</p><p>Positioning film </p><p>Sector flange 201</p><p>Pivot 30</p>

Figure 1 is an exploded perspective view of a conventional rotating shaft.

2 is a schematic view showing the stop structure of the rotating shaft shown in FIG. 1.

Figure 3 is an exploded perspective view of the stop structure of the present invention.

Figure 4 is a schematic view of the stop structure of the present invention in a normal use state.

Fig. 5 is a schematic view showing the stop structure of the case in an abnormal state.

Fig. 6 is an exploded perspective view of the stop structure for the rotating shaft of the present invention.

Fig. 7 is an exploded perspective view showing another embodiment of the stop structure of the present invention.