DE10057763C2

Double roller blind with simplified drive

Abstract

This record has no abstract on file.

DE10057763C2, drawing sheet 1 — Sheet 1 of 5

Term

Term ended

Expired 22 November 2020, 5.8 years ago.

18 claims: 1 independent, 17 dependent

1
window blind ( 12 ) For regulating the Lichtein accession through a window into an interior of the motor driving zeugs, particularly rear window shade,having a first winding shaft ( 25 ) Rotatably Gela siege is,with a second winding shaft ( 26 ), The axis-parallel to the first winding shaft ( 25 ) And this adjacent gela siege is,with a first blind sheet ( 28 ) Connected to an edge at the first winding shaft ( 25 is fixed) and the duly parallel edge ( 29 ) Having a first tension bar ( 31 verbun) the is,with a second blind sheet ( 37 ) Connected to an edge at the second winding shaft ( 26 is attached) and their parallel thereto edge ( 38 ) To a second tie rod ( 39 ) connected is,with a pair of guide means ( 13 . 76 ), of which every side stretched alongside the roller blinds ( 28 . 37 ) Extends,with a drive device ( 54 ), The only one first and a second thrust member ( 68 . 69 ), Which is arranged such that one end of the first pusher member ( 68 ) To one end of the first pull rod ( 31 ) and the other end of the first pusher member ( 68 ) With one end the second pull rod ( 39 ) Cooperates, and that one end the second thrust element ( 69 ) To the other end of the f th pull rod ( 32 ) And the other end of the second thrust member ( 69 ) To the other end of the second pull rod ( 39 ) interacts, wherein in a position of the two thrust members ( 68 . 69 ) Neither of the two blind sheets ( 28 . 37 ) been is clamped.

83 paragraphs, as filed

Modern body shapes are characterized by behaving tively large from windows. The large Fensterflä chen lead because of the strong sunlight to substantial heating of the vehicle interior, and at speed vehicles with air conditioning means the strong heating ei NEN not inconsiderable energy consumption to the driving counteract generating heating.

Vehicles are therefore increasingly equipped with window blinds.

For this purpose it is known, laterally next to the rear window to mount two guide rails, in which the pull rod of Blind web is guided end. The pull rod is längenver adjustable, follow the different window width to can. The operation is done by the guide seemed ongoing push elements.

Here, too, only two states are possible, namely unimpeded passage of light or attenuation ent Speaking of the weakening effect of the shade.

A blind assembly, the three states of light accession possible is known from US 3,183,033. These Arrangement, in the same housing two winding waves on which any rotation of the housing in gela siege is. The two shafts are axially parallel assigns.

At each winding shaft at one edge a zugehö engined blind sheet fastened whose paralle to the winding shaft provided le edge each with an associated tension rod is. The tension rods are adapted recorded manually to be to the pull rod to the exhaustion of the blind sheet against the action of a spring motor in special hook mount.

To actuate a blind, electric, it is from the DE 196 19 474 A1, the pull rod to the free edge the blind sheet is fastened, the end through sliders in to guide rails. run in the guide rails buckle-proof arranged pushing members that a Elek tric motor are driven in opposite directions. When the electric motor driven by a corresponding direction of rotation is, the pusher member in the guide rails before pushed while pushing the pull rod from the winding shaft away. When will drive in the opposite direction the push elements back into managed storage tubes so that the spring motor contained in the winding shaft the roller blind can wind up. The pull rod in this manner follows the Retraction of the thrust members.

Proceeding from this, it is an object of the invention is a create window roller blind for motor vehicles, the total three operating states allows and easy to has drifted.

This object is achieved according to the Fensterrol lo solved with the features of claim 1.

The window blind of the invention has two Rollobah NEN, which optionally but one at a time exclusively can be spanned ßend. This total Three states are possible, in which the light passing through brings that window is affected differently.

Although two separate blind sheets are present, this ultimately only a single drive motor is required. Use is made of the fact that the thrust members for actuating the tension rods in opposite moving directions. Thus, by appropriate cross-coupling using one and the same pair of push elements optional as the spanned one or the other blind web who the.

Here, the reduction in the number of the drive comes engines a significant economic importance. The Reduction in the number to only a single motor leads significant cost reductions, since the gearmotor represents a significant cost factor in such Window shade. In addition to reduced space demand substantially. The arrangement may in gaps be installed, which may not be sufficient accommodates two motors.

If the push elements in the way the cross-coupled Tension rods driving, that the ends of the same train member each further spaced apart ends press the two tie-rods, are tight radii of curvature and unnecessary lengths avoided.

The operation of the winding shafts and Synchronisati on the electric motor drive of the tension bars is particularly simple if the winding shafts each have a own spring engine feature by which they in winding meaning of that blind web are biased. The un let ent settings for the light entrance, achieved if a blind web only relatively slightly impaired the light entrance, so that after such before the view through the extended window shade web is possible. Such blind sheet preferably consists of a wide meshed knitted fabric or a perforated and eingefärb dark th film.

The other blind web can hand much more prevent the passage of light, if is for example only whilst parked finds use. It is Güns tig to make the shade so that they heat up the the vehicle interior prevents as much as possible. To this end, are particularly reflective coated roller blinds in question.

The almost completely opaque shade material on top of that provides a privacy screen when the car is parked.

Because of body shapes and other designs graphic reasons, the windows are often not rectangular.

You have usually a more or less strong trapezoidal shape. So that the tension rods that shape to follow, they are preferably telescopically lengths mutable.

The installation of the window blinds of the invention ver simplified when the adjacent closer Füh rungsnuten formed in a common guide rail are.

So even without the aid of springs Längenver position of the tension bars can be accomplished, the Guide preferably undercut guide grooves to be able with the aid of the guide grooves generate a force, through which the pull rod is pulled in the length.

The thrust members are flexible linear pushing members, preferably substantially rotationssymme are symmetrical. This tendency is counteracted, in which ausknicksi the push elements in elbows, cher are made to rotate.

The thrust members are relatively flexible and, are therefore protected from buckling between the guide and the gearmotor out.

The thrust members preferably consist of a in substantially cylindrical soul on the outside a tooth forms. These teeth can from a formed or more helical ribs be. In this way, the push elements are capable of form-locking engage the gear motor.

In particular, in the present invention Doppelan operating a certain risk that by the thrust members of the pull rod in question is not exactly parallel to the respective Weckelwelle is moved, it is appropriate that Winding shafts oscillate store. In this way they can under the effect of the bias voltage in the respective Setting the blind web in parallel with the pull rod. An otherwise on Kicking drape is avoided with certainty.

Incidentally, developments of the subject invention standing of claims. It shall take such Merkma le in combination are regarded as being claimed for there is no specific embodiment.

In the drawing, embodiments are the subject prior invention. Show it:

Fig. 1 a passenger in a rear view, under Demonstrates lichung a solid inventive Rear window shade,

Fig. 2 the basic design of the rear window shade after Fig. 1,

Fig. 3, the guide rail of the rear window shade after Fig. 1, in a cross section,

Fig. 4 storing the winding shafts of the rear window shade after Fig. 1, in a schematic ver simplified representation,

Fig. 5 to drive the rear window shade after Fig. 1, in a simple schematic illustration, and

Fig. 6 combiner to merge the guide grooves, a highly schematic representation.

Fig. 1 shows a schematic representation of the Rear view of a car 1 with a roof 2, A trunk 3 and two C-pillars 4 and 5, Between the two C-pillars4 and 5 There is a rear window opening 6, the after up of a roof rear edge 7 and downwardly from a window sill 8th is limited. In the rear window opening6 sitting in a known manner, for example by window glued rubber, a rear window.

Inside the car 1 located in front of the inside the rear window a hat rack 9That between the Lower window edge 8th and not recognizable in the figure ble rear seatback extends horizontally. In the rear shelf9 runs a straight outlet slit 11,

The outlet slot 11 belongs to a rear window shade 12, Whose basic design in Fig. 2 strong schemati Siert is illustrated in a side view.

The rear window shade 12, Two guide rails has on, in addition to the lateral edges of Heckfensteröff Regulation 7 at the two C-pillars 4 and 5 are attached. Because of the cutaway schematic diagram is in Fig. 2 only a guide rail 13 be seen, the example of , at the C-pillar 5 is attached.

The guide rail 13 , the in Fig. 3 shown Cross-sectional profile. It is in cross-section Wesentli chen rectangular and is of a front side 14, two lateral walls 15 and 16 and a rear side 17 be borders. From the Back Cover17 is a strip-like Be festigungsflansch 18 out, by means of which the guide rail 13 to be fixed to the corresponding body panels is.

In the guide rail 13 are parallel to each other two circular guide grooves, in cross section 19 and 21 contain about slots 22 and 23 to the front page 14 open back. The two guide grooves19 and 21 are identical in cross-section and extend along the Füh tion rail 13 parallel equidistant.

The guide rail 13 for example consists of egg nem extruded aluminum profile.

Since the slit 22 or. 23 is narrower than the diameter of the circular section of the guide grooves 19 or. 21, Formed undercut grooves suitable are a line-shaped thrust member against buckling to protect and the pusher member with a suitable diameter to prevent, through the slot 22 or. 23 outward exit.

The guide rails 13 are related. several axes bent to follow the contour of the window edge without to be visible in the window itself. The guide rails 13 are arranged so that the grooves 19 and 21 based hinte Go to the longitudinal extension of the vehicle another lie, that is, they are based on a vertical section through the vehicle of the vehicle longitudinal axis follows, side by side, bringing the a guide to the trunk 3 and the other guide more about vehicle inner is located towards.

The guide rails 13 ranging downward as Fig. 2 reveals through the slot 11 to below the Hat 9,

Below the rack 9 are like Fig. 4 shows, in a bearing bracket 24 two counter-winding winding shafts 25 and 26 rotatably mounted. Each of the winding shafts25 and 26 is tubular and houses a spring motor. For the winding shaft 26 this spring motor at 27 in Fig. 5 shown schematically. The spring motor27 consists of egg ner coil spring with one end inside the BE aptly winding shaft is fixed and the other end on the bearing bracket 24 is anchored.

To the winding shaft 25That inside the car to located is, with an edge, a blind web 28 attached, their Cutting a trapezoidal approximation of the contour of the rear window 6 is. The from the winding shaft25 open switch Edge into a tubular loop 29 shaped in of a tension rod 31 sitting. The pull rod31 consists of a rigid tube 32, In the two L-shaped guide members 33 and 34 are inserted from both ends, as Fig. 5 illustrates.

The guide member 33 consists of a long, in the rigid tube 32 sliding leg 35 and a L-shaped angled leg 36, The leg35 is on the cross section of the rigid tube 32 adjust to dimensioned such that it through the slot 22 or. 23 in perception re the relevant guide 19 or 21 can range. The leg 36 on the other hand is connected to the cross-section of the circular- shaped part of the guide groove 19 or 21 adjusted. On this way, the leg 35 in the rigid tube 32 a longitudinally displaceable manner and the leg 36 can along the relevant guide 19. 21 to run. He is sideways not from the slot 22. 23 pulled out.

The guide member 34 has the same construction as the guide member 33So that a new explanation inso widely unnecessary.

To the winding shaft 26 is another blind web 37 one end attached, which also at her from the winding wave 26 distal edge a loop 38 forms. In the loop 38 sits one adjustable tension rod 39, be standing of a rigid tube 41, The length of the Edge corresponds to and in the two guide members 42 and 43 are guided, which have the same structure, as in the Associated with the guide member 33 explained in detail is.

The roller blinds 28 and 37 run between the winding wave 25. 26 from.

The bearing bracket 24 for storage of the two winding shafts 25 and 26 is a U-shaped structure having a back part 44 and two right angles of outgoing legs 45 and 46In which the winding shafts 25 and 26 with appropriate Trunnions are rotatably supported.

In the middle of the back portion 44, Is a pivot 47Having its axis perpendicular to the axis of the two mutually axially parallel winding shafts 25 and 26 runs. The journal25 sits in a bearing bore 48 a holder 49Which is below the parcel shelf 9 in the Vehicle is firmly anchored. In this way can the two winding shafts 25 and 26 limited respect. the axis, defined by the journal 47, Rotate.

The middle position, ie, the centered position is controlled by two springs 51 and 52 prescribed, which at one end on the bearing bracket 24 and the other end on a ka rosse cried most edition 53 supported schematically angege ben is. The two springs51 and 52 Sitting at About crossing point of the back part 44 in the leg 45 or 46So that equal torques arise.

To the blind sheets 28 and 37 extend is to drive device 54 provided in Fig. 5 strongly cal is shown mated. For simplicity of illustration and are for explaining the understanding of the invention the two lateral guide rails 13 in Fig. 5 ge turns illustrated in such a way that the two Füh rungsnuten 19 and 21 lie next to one another in the plane gen. This representation is as I said only to facilitate been made of understanding. are in truth the two guide grooves 19 and 21 one behind the other and open also toward each other and not in Towards the viewer.

The drive device 54 include a gearmotor 55Which is composed of a permanent magnet DC motor 56 and a transmission case is composed. In the Getrie begehäuse are parallel to each other two ducts 58 and 59 included, between which on an output shaft 61 an output gear 62 is provided. The output gear62 can explain what rotatably connected output shaft 61 be placed selectively in both directions of rotation in transition.

From the guide channel 58 is a guide tube 63 to the lower end of the guide groove 19 in the right Füh tion rail 13, Another guide tube64 connects the other end of the guide channel 58 with the lower end of the guide 21 in the left guide rail 13, The Füh signaling channel 59 is at the right end over a guide tube 65 with the lower end of the guide groove 21 in the right Füh tion rail 13 and at the left end via a guide tube 66 with the lower end of the guide groove 19 in the lead rail 13 connected. Both through the guide channel58 as also through the guide channel 59 always extends a bie geelastisches pusher member 67 or. 68, The length of the two thrust members 67 and 68 is dimensioned so that it in the Neutral position just now not in the associated Füh rungsnuten 19 or. 21 protrude.

The two push elements 67 and 68 have the same on construction. They each consist of an elastically bendable soul 69, Which on its outer side one or more Rip pen 71 transmits that there is a single or multi-threaded form. Ribs71 project radially and run screws benförmig over the cylindrical core 69 from one end of Pusher member to the other end. The output gear62 carries a gearing, the intermediate of the ribs 71 engageable grooves formed. In this way, the output gear 72 positively to the push elements 67 and 68 coupled.

The operation of the rear window shade described is as follows:In the rest position under the action of the ent Speaking spring motors 27 the winding shafts 25. 26 in a rotated position in which the roller blinds 28 and 37 aufgewi oped are. In this position are the hose like loops 29 and 38 in the outlet slit 11, as this Fig. 2 reveals. The guide members33. 34 and 42. 43 lie in the vicinity of the lower ends of the two Füh securing rails 13Without, however, the leg 36 from the accompanying guide 19 and 21 are freed. The se position of the guide members 42 and 43 in Fig. 5 is shown. The guide members33 and 34 take a similarity che position would, and if they in Fig. 5 is records were, of the guide members 42 and 43 concealed be.

Simultaneously, the two push elements are 68 and 69 with both ends of the legs in question 36 spaced.

If the user on the basis of this position of the Rear window blind 12In which the light entering into the driving convincing inner is not affected at all, a first wants to create shading, he drives Example as the blind sheet 28 out. The blind sheet28 reduces the Light passage without him to completely stop. To this end, is the shade 28 for example, from an open Warp, or a perforated and black-colored Plastic film.

To the blind sheet 28 extend, the transmission is motor 55 set with such a direction of rotation in transition, that he the pusher member 69 to the right by the guide groove 19 emotional. Since the two thrust members68 and 69 at Diame tral opposite sides with the output gear 62 comb, simultaneously, the pusher member 68 to the left by the guide groove 19 and the left guide rail 13 advanced. After a short stretch of the feeding path kom men, the free ends of the two thrust members 68 and 69 With the lower ends of the legs 36 the two guide Glienicke of the 33 and 34 engaged and slide in the course the guide members 33 and 34 in the direction of the upper End of the two guide rails 13,

As the distance between the guide rails ver changes appear simultaneously telescopically thighs 35 the guide members 33 and 34 in the question in the loop 29 contained dimensionally rigid pipe 33 the pull rod 31 on.

Once the end position is reached, the transmission is motor 55 stopped. The gearmotor55 is selbsthal tend and arrests the thrust members 68 and 69 in each Weil's position reached.

Switching off the gearmotor 55 done using limit switches or by the guide members 33 and 34 calling at stops, so that made in an electronic zuwertender blocking current occurs, for switching off leads.

The blind sheet 28 is now between the drawbar 31 and the respective winding shaft 25 spanned held.

To retract the gear motor 55 with the ent against direction of rotation set in motion, so that the two guide members 68 and 69 down from the zugehö engined guide rails 13 be moved out. simultaneity tig runs the pull rod 31 with down because by the Effect of the spring motor 27 the winding shaft 25 the shade 28 is constantly kept under tension.

Once the blind sheet 28 is fully wound, the tension members 68 and 69 end of the guide structure 33 and 34 freed. This centered central position can also be detected by limit switches and leads to the shutdown of the gearmotor 55,

If the gearmotor 55 after the complete A drive the runway 28 incorporated with the same rotational direction stays on the pusher member is 69 in the guide groove 21 the left guide rail 13 and the pusher member 68 in the guide groove 21 Right guide rail 13 pre pushed. Since in the guide grooves21 the pull rod 39 the at whose blind web 37 is performed, is now the tension rod 39 of the two push elements 68 and 69 taken. The Consequence of this is that now the shade 37 before the rear window 6 is spanned.

The blind sheet 37 shows another Transparent ness 28, For example, the blind sheet37 completely be opaque, so any light entering the vehicle interior is prevented. Such operation position is particularly important in a parked car advantageous because in this way due to the heating of the interior Light shining through the rear window completely suggests.

The heat radiation can be further reduced, when the outward facing side of the blind sheet 37 additional is Lich metallized to Reflect infrared rays animals.

The retraction of the blind sheet 37 happens in the sense under reverse manner.

As a result of mounting tolerances not always be may ensure that the thrust members 68 and 69 thieves striking tension bars 31 or 39 be exactly parallel to the aptly winding shaft 25 or 26 Lift, a Ver Tilting of the respective tie rod 32. 38 opposite the to associated winding shaft 25. 26 occur. Without countermeasures would the canting to obliquely waves or wrinkles lead in the respective blind web. However, because at the winding shafts 25 and 26 pivoted in the bearing bracket 24 are added, the winding shaft can be limited angle and thus exactly parallel to the pull rod in question 32. 39 align. Slanted tensions in the Blind sheet are excluded.

With the aid of the two springs 51 and 52 is the temple biased into the centered position. A tumbling to the Transverse axis and thus rattling while driving locked out.

Fig. 6 schematically shows an alternative embodiment form for the guide means for guiding the tension bars 31 and 38,

While in the embodiment, in accordance with the Fig. 2 and 5, in each guide rail two guide ent are hold, the embodiment according to Fig. 6 per Side of the window blinds 12 only a guide 75 on. At the end wickelwellenseitigem is the guide rail 13 in a switch 76 above, in which the Füh guide groove 75 in the two guide grooves 19 and 21 divides. In extension of the two guide grooves 19 and 21 flow as in the embodiment according to Fig. 5, the guide tube 63 , , ,66 in mutatis mutandis appropriate manner.

In the embodiment shown, the running Füh guide groove 21 without substantially straight through and empties Sheet in the guide groove 75While the guide groove 19 the Branch of the guide groove 75 represents and from the side ago opens.

To the tension bars 31 and 38 respectively in the right Füh guide groove 19 or. 21 let enter, is a pivotal bar mounted switch blade 77 available. The switch blade77 is stored at 78 pivotable about an axis parallel to the axes of the two winding shafts 25 and 26 lies. The axis 78 is located in the heart of the Soft 76 U.N indirectly before the two grooves 19 and 21 unite.

The switch blade 77 provides a two-armed lever with a first portion 79 and a second one hook 81 carrying section 82 represent.

The function of the switch is as follows: In the rest position, when both roller blinds 28 and 37 are retracted, is the tie rod 38 in the hook 81 and pivots the switch blade 77 based on Fig. 6 in Counterclockwise direction. The pivoting is sufficient to allow the section 79 with its guide surface 82 the bogenför shaped profile at the transition from the groove 19 to the groove 75 he supplemented. In this position, the section is79 at one stop 83 at.

The pull rod 31 can now through the thrust concerned member 68 or 69Which over the guide tube 63 or. 66 to is guided from the winding shaft 25 are pushed away. Here comes the pull rod 31 for a piece of the path from the guide groove 19 in the common guide 75,

When retracting the pull rod runs 31 at the guide area 82 is hereby along and in the further course in the groove 19 brought back.

Upon extension of the blind sheet 37 moves the train tab 38 from the hook 81 away, so that under the effect of egg ner not shown spring the switch blade 77 With its guide surface 82 a stop 84 bears. In this position closes a guide surface 85, the the guide surface 82 substantially opposite to, the A running in the guide groove 19,

Fig. 6 illustrates the state after directly the drawbar the 38 in the guide groove 75 has been run, or the state immediately before the drawbar 38 at the Retracting the opening of the guide groove 19 happens.

The blind sheet 37 can now as previously described Removing be and also retracted again. The switch blade77 ensures that after passing the branch point the pull rod 38 in the right guide 21 to lie comes.

A window blind is provided with blind sheet means, each having different degrees in the extended condition allow the light transmittance of the window. To this end, two blind sheets will be on separate winding shafts wraps. To selectively extending either one or the other blind web, only one drive motor is used.

Every citation, both ways

Citations
Document	Relation	Office	Cited during
DE102011007004A1	Cited by	Germany	Search report
DE10334695A1	Cited by	Germany	Search report
DE102011007004B8	Cited by	Germany	Search report
DE102011007004B4	Cited by	Germany	Search report
DE19619474A1	Cites	Germany	Search report
US3183033A	Cites	United States of America	Search report

13 members in 6 offices

This recordMember, by publication datePriority claim

Priority claims2

Priority claims
Document	Office	Kind	Date
10057763	Germany	A	2000-11-22
DE2000157763	–	–	–

Members13

Family members, oldest first
Document	Office	Kind
US2002059986A1	United States of America	A1	2002-05-23
KR20020040579A	Republic of Korea	A	2002-05-30
EP1211111A1	European Patent Office (EPO)	A1	2002-06-05
DE10057763A1	Germany	A1	2002-06-06
CN1354096A	China	A	2002-06-19
JP2002206385A	Japan	A	2002-07-26
DE10057763C2This record	Germany	C2	2002-10-24
US6520239B2	United States of America	B2	2003-02-18
CN1153690C	China	C	2004-06-16
JP3612299B2	Japan	B2	2005-01-19
EP1211111B1	European Patent Office (EPO)	B1	2006-08-16
DE50110745D1	Germany	D1	2006-09-28
KR100828442B1	Republic of Korea	B1	2008-05-13

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	Event	Code
2008-09-11	Ceased/non-payment of the annual feeCeased8339	8339
2003-04-24	No opposition during term of oppositionOpposition8364	8364
2002-10-24	Grant after examinationD2	D2
2002-06-06	Request for examination as to paragraph 44 patent lawOP8	OP8