CN113335166B

CN113335166B - Continuous rotation integral type leg holds in palm

Info

Publication number: CN113335166B
Application number: CN202110852739.5A
Authority: CN
Inventors: 俞洁; 张寅�; 黄礼雅; 毛爱华; 戴张薇
Original assignee: Yanfeng International Seating Systems Co Ltd
Current assignee: Yanfeng International Seating Systems Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2023-03-07
Anticipated expiration: 2041-07-27
Also published as: CN113335166A; WO2023005876A1

Abstract

The invention relates to a continuous rotation integrated leg support which comprises a leg support overturning structure, a leg support extending structure and a leg support extending driving structure, wherein the leg support overturning structure is arranged on a cushion framework in a turnover mode and comprises a supporting arm, a synchronous rod and a single motor, the synchronous rod is connected with the motor, the supporting arm is connected to the synchronous rod to be driven by the motor to rotate around the central axis of the synchronous rod, and the leg support extending structure is extendably arranged on the leg support overturning structure through the leg support extending driving structure to be overturned and extended continuously and simultaneously between an initial position and an unfolded position. According to the continuous rotation integrated leg support, the rotation overturning and the extension extending can be simultaneously and continuously realized through only one motor, the cost is low, and the whole appearance is integrated.

Description

Continuous rotation integral type leg holds in palm

Technical Field

The invention relates to an automobile seat, in particular to a continuous rotation integrated leg support.

Background

Leg rests are known as accessories on vehicle seats, primarily to assist in increasing the leg support area for the occupant to improve the comfort of the ride. The leg supports in the prior art are all discontinuous, rotary overturning is realized through one motor, and extension is realized through the other motor, so that the cost is high, and the overall appearance is segmented.

Disclosure of Invention

In order to solve the problems of high cost and the like in the prior art, the invention provides a continuous rotation integrated leg support.

The continuous rotation integrated leg rest comprises a leg rest overturning structure, a leg rest extending structure and a leg rest extending driving structure, wherein the leg rest overturning structure is installed on a cushion framework in a turnover mode and comprises a supporting arm, a synchronizing rod and a single motor, the synchronizing rod is connected with the motor, the supporting arm is connected to the synchronizing rod to be driven by the motor to rotate around the central axis of the synchronizing rod, and the leg rest extending structure is installed on the leg rest overturning structure in an extensible mode through the leg rest extending driving structure to be overturned and extended continuously and simultaneously between an initial position and an unfolded position.

Preferably, the leg rest extension drive mechanism is a take-up reel drive zip-lock mechanism.

Preferably, the leg support overturning structure further comprises a steel wire take-up reel, a pulley fixing plate and a pretensioner, wherein the steel wire take-up reel is sleeved on the synchronizing rod to synchronously rotate along with the synchronizing rod under the driving of the motor, and the pulley fixing plate and the pretensioner are respectively fixed on the supporting arm to synchronously overturn along with the supporting arm under the driving of the motor.

Preferably, the leg rest extension driving structure comprises a rear roller bracket, a front roller bracket, a pretensioner bracket and a steel wire, wherein the rear roller bracket and the front roller bracket are respectively and fixedly installed on the pulley fixing plate, the pretensioner bracket is installed on the pretensioner, one end of the steel wire is fixed on the steel wire take-up reel and sequentially passes through the rear roller bracket, the front roller bracket and the pretensioner bracket, and the other end of the steel wire is wound and fixed on the steel wire take-up reel to form a closed loop.

Preferably, the first small roller is rotatably mounted on the rear roller bracket, the large roller is rotatably mounted on the front roller bracket, the second small roller is rotatably mounted on the pretensioner bracket, and the wire is guided by means of the first small roller, the large roller, and the second small roller in this order.

Preferably, the leg rest extension driving structure further comprises a lower steel wire limiting block and an upper limiting block, wherein the lower steel wire limiting block is fixed on the leg rest extension structure, the steel wire is provided with a limiting block, and the limiting block is placed in the lower steel wire limiting block and is fixed by covering the upper limiting block, so that the leg rest extension structure is driven by walking of the steel wire.

Preferably, the leg rest extension structure comprises a sliding bar sleeve and an extension mechanism, wherein the sliding bar sleeve is fixed on the support arm, and the extension mechanism is installed in a butt joint mode with the sliding bar sleeve.

Preferably, the extension mechanism comprises a limiting block fixing bracket, a sliding rod and an extension block, wherein the limiting block fixing bracket fixedly connected with the steel wire limiting lower block is fixedly connected with the extension block, and the sliding rod inserted into the sliding rod sleeve in sliding fit is fixed with the extension block.

Preferably, the supporting arm comprises a leg support outer support, an angle adjuster and a leg support inner support, wherein the leg support outer support is fixed on the cushion framework, the leg support inner support is arranged on the leg support outer support in a turnover mode through the angle adjuster, and the angle adjuster is in driving connection with the synchronizing rod to drive the leg support inner support to turn over through the motor.

Preferably, the leg rest turnover structure comprises two support arms which are symmetrically arranged, and the synchronizing rod is connected between the two support arms to synchronously drive the two support arms.

According to the continuous rotation integrated leg support, the rotation overturning and the extension extending can be simultaneously and continuously realized through only one motor, the cost is low, and the whole appearance is integrated.

Drawings

FIG. 1 is an exploded view of a seat cushion assembly showing the assembled relationship of a continuously rotating integrated leg rest and seat cushion frame in accordance with a preferred embodiment of the present invention;

figure 2 is a schematic view of an adjustment process of the seat cushion assembly of figure 1, it shows the adjustment process of the continuously rotating integrated leg rest between the initial position and the deployed position;

FIG. 3 is a schematic view of the overall structure of the continuous rotation integrated leg rest of FIG. 1;

FIG. 4 is an exploded view of the leg rest tilt arrangement of FIG. 3;

FIG. 5 is an exploded view of the leg rest extension structure of FIG. 3;

FIG. 6 is an exploded view of the leg rest extension drive structure of FIG. 3;

fig. 7 is a schematic structural view of the spool driving zipper mechanism of fig. 6;

figure 8 is a cross-sectional view of the take-up reel drive zip-lock mechanism of figure 7;

fig. 9 is a schematic view of an adjustment process of the take-up reel drive zipper mechanism of fig. 7;

FIG. 10 is a schematic illustration of the adjustment process of the leg rest extension structure of FIG. 5, showing the adjustment process of the extension mechanism between the initial position and the deployed position.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, a seat cushion assembly of an automobile seat includes a continuous rotation integrated leg rest 101 and a seat cushion frame 102 according to a preferred embodiment of the present invention, wherein the continuous rotation integrated leg rest 101 is welded and fixed on the seat cushion frame 102 to form a seat cushion assembly, and the whole of the seat cushion assembly is connected with a backrest assembly to form a complete automobile seat.

As shown in fig. 2, the continuous rotation integrated leg rest 101 is vertically disposed in front of the seat cushion frame 102 at an initial position, and the continuous rotation integrated leg rest 101 is lifted forward to a maximum angle and extended downward to a longest position at a deployed position, and particularly, the continuous rotation integrated leg rest 101 is continuously turned and extended simultaneously at an intermediate position between the initial position and the deployed position, that is, lifted forward while deployed downward, and lowered backward while retracted upward, by means of driving of a single motor.

As shown in fig. 3, the continuous rotation integrated leg rest 101 includes a leg rest flip structure 101a, a leg rest extension structure 101b, and a leg rest extension driving structure 101c, wherein the leg rest flip structure 101a is turnably mounted on the seat cushion frame 102 (see fig. 1), and the leg rest extension structure 101b is extendably mounted on the leg rest flip structure 101a through the leg rest extension driving structure 101 c.

As shown in fig. 4, the leg rest flipping structure 101a comprises a right side support arm 200, a left side support arm 210, a synchronization rod 300 and a motor 310, wherein the synchronization rod 300 is connected to the motor 310, and the right side support arm 200 and the left side support arm 210 are respectively connected to opposite ends of the synchronization rod 300 to synchronously drive the right side support arm 200 and the left side support arm 210 to rotate around the central axis of the synchronization rod 300 by the motor 310. Specifically, the right side support arm 200 includes a right leg support outer bracket 110, a right angle adjuster 111 and a right leg support inner bracket 112, the right leg support outer bracket 110 is welded and fixed on the cushion frame 102 (see fig. 1), and the right leg support inner bracket 112 is installed on the right leg support outer bracket 110 through the right angle adjuster 111 in a turnable manner; similarly, the left side support arm 210 includes a left leg support outer bracket 113, a left angle adjuster 114 and a left leg support inner bracket 115, the left leg support outer bracket 113 is welded and fixed on the cushion frame 102 (see fig. 1), and the left leg support inner bracket 115 is installed on the left leg support outer bracket 113 through the left angle adjuster 114 in a reversible manner; the right recliner 111 and the left recliner 114 are respectively drivingly connected to opposite ends of the synchronizing bar 300 to synchronously drive the turning of the right leg rest inboard bracket 112 and the left leg rest inboard bracket 115 through the motor 310.

As shown in fig. 4, the leg rest overturning structure 101a further includes a fastener 320 and a motor support 330, wherein the motor 310 is fixedly mounted on the left side of the motor support 330 by the fastener 320 (e.g., a screw), and the right leg rest outer support 110 and the left leg rest outer support 113 are respectively welded on two opposite sides of the motor support 330. It should be understood that the motor 310 may also be mounted and fixed to the right side of the motor bracket 330.

As shown in fig. 4, the leg rest flipping structure 101a further includes a right wire take-up reel 400 and a left wire take-up reel 410, which are respectively fitted over the synchronizing bars 300 to be rotated in synchronization therewith by the driving of the motor 310.

As shown in fig. 4, the leg rest overturning structure 101a further includes a right pretensioner 420 and a left pretensioner 430 welded to the inner sides of the right leg rest inner bracket 112 and the left leg rest inner bracket 115, respectively, to overturn in synchronization therewith under the driving of the motor 310.

As shown in fig. 4, the leg rest flipping structure 101a further includes a pulley fixing plate 440 welded to the right leg rest inner bracket 112 and the left leg rest inner bracket 115 to flip under the driving of the motor 310 in synchronization therewith.

As shown in fig. 5, the leg rest extension structure 101b includes two sliding rod sleeves 602 and an extension mechanism 701, wherein the sliding rod sleeves 602 are respectively fixed on the right leg rest inner bracket 112 and the left leg rest inner bracket 115, and the extension mechanism 701 is installed in a butt joint with the sliding rod sleeves 602. Specifically, the extension mechanism 701 includes a limiting block fixing bracket 601, a sliding rod 603, an extension block 604, a right sleeve bracket 605, a left sleeve bracket 606 and a roller 608, wherein the limiting block fixing bracket 601 is welded and fixed to the extension block 604, the sliding rod 603 inserted into the sliding rod sleeve 602 and slidably engaged therewith is welded and fixed to the extension block 604, the right sleeve bracket 605 and the left sleeve bracket 606 are fixed to the extension block 604 by bolts 607, and the roller 608 is fixed to the extension block 604 by nuts 609.

As shown in fig. 6, the leg rest extension driving structure 101c includes two coil driving zipper mechanisms symmetrically disposed on the left and right sides, as shown in fig. 7 and 8, the coil driving zipper mechanism includes a pretensioner bracket 510, a rear roller bracket 530, a front roller bracket 532 and a wire 538, wherein the wire 538 is first fixed on the wire take-

up reels

400, 410, sequentially passes through the rear roller bracket 530, the front roller bracket 532, the pretensioner bracket 510, and finally is wound and fixed on the wire take-

up reels

400, 410, so as to complete the installation of the wire 538, thereby forming a closed loop. Specifically, with reference to fig. 6, a small roller 501 is fixed to a pretensioner bracket 510 by a pin 502 and a circlip 503, a spring 504 is placed in the middle of the pretensioner bracket 510 and fixed to

pretensioners

420, 430 by a pin 505, and finally locked by the circlip 503; the rear roller bracket 530 is fixed on the pulley fixing plate 440 by welding, and the other small roller 520 is fixed on the rear roller bracket 530 by a pin 531 and a clamp spring 503; the front roller bracket 532 is fixed to the pulley fixing plate 440 by welding, and the large roller 533 is fixed to the front roller bracket 532 by a pin 534 and a snap spring 535.

As shown in fig. 6 to 8, the winding roll driving zipper mechanism further includes a wire restricting lower block 536 and a restricting upper block 539, wherein the wire restricting lower block 536 is fixed to the restricting block fixing bracket 601 by a bolt 537, the wire 538 has a restricting block 5381 placed in the wire restricting lower block 536, and the restricting upper block 539 is covered and fixed by a bolt 537. Thus, the travel of the wire 538 drives the wire to restrict the movement of the lower block 536 and the block fixing bracket 601, thereby driving the extension movement of the leg rest extension structure 101b (see fig. 5). Specifically, the synchronous lever 300 is rotated by the motor 310, and the wire take-

up reels

400, 410 mounted on the synchronous lever 300 rotate and take up the wire 538, as shown in fig. 9, which travels to move the restricting block fixing bracket 601 and the leg rest extension structure 101b (see fig. 3), i.e., the sliding lever 603 is moved in the sliding lever sleeve 602, as shown in fig. 10, thereby achieving the extension and contraction of the leg rest extension structure 101 b. It should be understood that the manner of actuation of the extension is not limited to the wire pulling described above.

Thus, the motion trajectory process of the continuous rotation integrated leg rest 101 according to a preferred embodiment of the present invention includes: the motor 310 receives the power-on signal, drives the synchronous rod 300, drives the

angle adjusters

111 and 114 to operate and drive the leg support

inner side brackets

112 and 115, so that the leg supports are unfolded; the synchronous rod 300 drives the winding roll to drive the zipper mechanism while driving the

angle adjusters

111 and 114, the leg support extension is performed synchronously while the leg support is lifted, and the leg support is extended to the longest position when the leg support is completely unfolded due to the accurately calculated time.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and various modifications may be made to the above-described embodiment of the present invention. All simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application fall within the scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.

Claims

1. A continuous rotation integrated leg support is characterized by comprising a leg support overturning structure, a leg support extending structure and a leg support extending driving structure, wherein the leg support overturning structure is arranged on a cushion framework in a turnover mode and comprises a supporting arm, a synchronous rod and a single motor, the supporting arm comprises an angle adjuster, the synchronous rod is connected with the motor, the supporting arm is connected to the synchronous rod to drive the angle adjuster to rotate around the central axis of the synchronous rod through the motor, the leg support extending structure is arranged on the leg support overturning structure in an extensible mode through the leg support extending driving structure, the leg support overturning structure further comprises a steel wire take-up reel, a pretensioner and a pulley fixing plate, the steel wire take-up reel is sleeved on the synchronous rod to rotate synchronously with the synchronous rod under the driving of the motor, the pretensioner and the pulley fixing plate are respectively fixed on the supporting arm to synchronously overturn with the supporting arm under the driving of the motor, the leg support extension driving structure comprises a steel wire wound on a steel wire take-up reel to drive the leg support extension structure through the walking of the steel wire, and further comprises a rear roller support, a front roller support and a pretensioner support, wherein the rear roller support and the front roller support are respectively and fixedly arranged on a pulley fixing plate, a spring is placed in the middle of the pretensioner support, is fixed on the pretensioner through a pin and then is locked through a clamp spring to install the pretensioner support on the pretensioner, one end of the steel wire is fixed on the steel wire take-up reel and sequentially passes through the rear roller support, the front roller support and the pretensioner support, and the other end of the steel wire is wound and fixed on the steel wire take-up reel to form a closed loop so as to be continuously and simultaneously overturned and extended between an initial position and an unfolded position by means of the single motor.

2. The continuous rotation integrated leg rest of claim 1, wherein the leg rest extension driving structure is a take-up reel driven zipper mechanism.

3. The continuous rotation integrated leg rest of claim 1, wherein a first small roller is rotatably installed on the rear roller bracket, a large roller is rotatably installed on the front roller bracket, a second small roller is rotatably installed on the pretensioner bracket, and the wire is guided by means of the first small roller, the large roller, and the second small roller in turn.

4. The continuous rotation integrated leg rest of claim 1, wherein the leg rest extension driving structure further comprises a lower steel wire limiting block and an upper limiting block, wherein the lower steel wire limiting block is fixed on the leg rest extension structure, the steel wire has a limiting block, and the limiting block is placed in the lower steel wire limiting block and fixed by covering the upper limiting block.

5. The continuous rotation integrated leg rest of claim 4, wherein the leg rest extension structure comprises a sliding bar sleeve and an extension mechanism, wherein the sliding bar sleeve is fixed on the support arm, and the extension mechanism is installed in butt joint with the sliding bar sleeve.

6. The continuous rotation integrated leg rest according to claim 5, wherein the extension mechanism comprises a limiting block fixing bracket, a sliding rod and an extension block, wherein the limiting block fixing bracket fixedly connected with the lower block limited by the steel wire is fixedly connected with the extension block, and the sliding rod inserted into the sliding rod sleeve and slidably engaged with the extension block is fixed with the extension block.

7. The continuously rotatable one-piece leg rest as claimed in claim 1, wherein the support arm comprises an outer leg rest support and an inner leg rest support, wherein the outer leg rest support is fixed to the seat cushion frame, the inner leg rest support is reversibly mounted to the outer leg rest support through a recliner, and the recliner is drivingly connected to a synchronizing bar to drive the inner leg rest support to be reversibly rotated by a motor.

8. The continuous rotation integrated legrest of claim 1, wherein the legrest roll-over structure comprises two symmetrically disposed support arms, and a synchronization rod is connected between the two support arms to synchronously drive the two support arms.