Reversing mechanism for realizing stepless manual adjustment of seat backrest

Abstract

The utility model relates to a reversing mechanism for realizing stepless manual adjustment of a seat backrest, a recliner assembly comprises an upper plate, a recliner and a lower plate, the upper plate is connected to the lower plate through the recliner so as to adjust the angle of the upper plate relative to the lower plate through the recliner, and a recliner driving mechanism is rotatably mounted on the lower plate through a fixing seat. Hand wheel teeth of the hand wheel mechanism are connected with driving teeth of the angle adjuster driving mechanism through a gear of the middle tooth mechanism, and the angle adjuster driving mechanism is connected with the angle adjuster through a synchronous rod, so that the angle adjuster is driven by the hand wheel mechanism to adjust the angle of the upper plate relative to the lower plate. According to the reversing mechanism for achieving stepless manual adjustment of the seat backrest, through two-stage gear transmission, operation of the hand wheel and the backrest at a specific transmission ratio is achieved, the problem that the operation direction of the seat backrest of an external hand wheel of a differential tooth angle adjuster is inconsistent with the operation direction of the hand wheel can be solved, and the comfort of using the hand wheel by a terminal client can be improved.

Description

Technical Field

[0001] The utility model relates to a car seat, and more particularly to a reversing mechanism for realizing stepless manual adjustment of a seat back. Background Art

[0002] For the differential gear star-shaped motion recliner, due to the problem of the interface layout at the skeleton end, the internal and external teeth are installed in reverse, resulting in inconsistency between the handwheel direction of the stepless manual recliner and the movement direction of the backrest, which goes against the customer's operating habits. Utility Model Content

[0003] In order to solve the problem of the prior art violating the operating habits of customers, the utility model provides a reversing mechanism for realizing stepless manual adjustment of a seat back.

[0004] According to the utility model, a reversing mechanism for realizing stepless manual adjustment of a seat backrest comprises a recliner assembly, a synchronization rod, a fixed seat, a recliner driving mechanism, an intermediate gear mechanism and a handwheel mechanism, wherein the recliner assembly comprises an upper plate, a recliner and a lower plate, the upper plate is connected to the lower plate through the recliner so as to adjust the angle of the upper plate relative to the lower plate through the recliner, the recliner driving mechanism is rotatably mounted on the lower plate through the fixed seat, the handwheel teeth of the handwheel mechanism are connected to the driving teeth of the recliner driving mechanism through the gears of the intermediate gear mechanism, the recliner driving mechanism is connected to the recliner through the synchronization rod, and the recliner is driven by the handwheel mechanism to adjust the angle of the upper plate relative to the lower plate.

[0005] Preferably, the recliner drive mechanism comprises a drive ring and a drive disc, wherein the drive teeth are arranged on a surface of the drive ring facing away from the recliner assembly, the drive ring is rotatably mounted inside the fixing seat, and the drive disc is torsionally mounted on the drive ring.

[0006] Preferably, the center of the driving disk has a matching hole and a pawl is provided on its surface facing the recliner assembly, the pawl and the recliner are assembled with a limiting fixing seat, and the synchronization rod is respectively inserted into the matching hole and the recliner to drive the recliner through the recliner driving mechanism.

[0007] Preferably, the fixing seat comprises a body and a flange, wherein the body is a cylindrical structure, the flange extends radially outward from the end of the body, and a plurality of positioning pins are arranged on the surface of the flange facing away from the body, and the positioning pins are assembled with corresponding holes on the lower plate.

[0008] Preferably, the intermediate tooth mechanism comprises two groups of intermediate teeth symmetrically mounted on a fixed seat.

[0009] Preferably, the body has a through hole, and each set of intermediate teeth includes a bolt, a gear and a nut. The bolt extends through the through hole and the gear and is mounted on the fixing seat through the nut.

[0010] Preferably, the handwheel mechanism comprises a handwheel ring and a handwheel disc, wherein the handwheel ring is rotatably mounted on the outside of the fixing seat through a plurality of buckles evenly distributed circumferentially, and the handwheel disc is torsionally mounted on the handwheel ring.

[0011] Preferably, hand wheel teeth are arranged on the surface of the hand wheel disc facing the recliner assembly, which mesh with the gears to drive the recliner through the hand wheel mechanism.

[0012] Preferably, the car seat includes a backrest frame and a seat basin frame, wherein the upper plate is fixedly connected to the backrest frame, and the lower plate is assembled with the seat basin frame, the handwheel mechanism drives the gear of the intermediate gear mechanism through the handwheel teeth, the gear drives the driving teeth of the recliner driving mechanism, and the recliner driving mechanism drives the recliner through the synchronization rod, thereby driving the upper plate to drive the backrest frame to move.

[0013] The reversing mechanism for realizing stepless manual adjustment of the seat back according to the utility model realizes the operation of the hand wheel and the backrest at a specific transmission ratio through a secondary gear transmission, which can solve the problem of inconsistent operation directions of the seat back and the hand wheel of the external hand wheel of the differential gear angle adjuster, and can improve the comfort of the end customer in using the hand wheel. In particular, the external hand wheel integrates the hand wheel teeth and the gear meshing, saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an exploded view of a reversing mechanism for realizing stepless manual adjustment of a seat back according to a preferred embodiment of the utility model.

[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the fixed seat.

[0016] Figure 3 yes Figure 1 Exploded view of the recliner drive mechanism.

[0017] Figure 4 yes Figure 1 Exploded diagram of the intermediate gear mechanism.

[0018] Figure 5 yes Figure 1 Exploded view of the drive handwheel.

[0019] Figure 6 Show Figure 1 The installation environment of the reversing mechanism. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present utility model are given below in conjunction with the accompanying drawings and described in detail.

[0021] like Figure 1As shown, a reversing mechanism for realizing stepless manual adjustment of a seat back according to a preferred embodiment of the utility model includes a recliner assembly 1, a synchronization rod 2, a fixed seat 3, a recliner drive mechanism 4, an intermediate gear mechanism 5 and a handwheel mechanism 6, wherein the recliner assembly 1 includes an upper plate 11, a recliner 12 and a lower plate 13, the upper plate 11 is connected to the lower plate 13 through the recliner 12 to adjust the angle of the upper plate 11 relative to the lower plate 13 through the recliner 12, the recliner drive mechanism 4 is installed on the lower plate 13 through the fixed seat 3, the handwheel mechanism 6 is connected to the recliner drive mechanism 4 through the intermediate gear mechanism 5, and the recliner drive mechanism 4 is connected to the recliner 12 through the synchronization rod 2, so that the recliner 12 is driven by the handwheel mechanism 6 to adjust the angle of the upper plate 11 relative to the lower plate 13.

[0022] like Figure 2 As shown, the fixing seat 3 includes a body 31 and a flange 32, wherein the body 31 is a cylindrical structure and has a through hole 311, and the flange 32 extends radially outward from the end of the body 31. A plurality of positioning pins 321 are provided on the surface of the flange 32 facing away from the body 31, which are assembled with corresponding holes (not shown) on the lower plate 13, so as to realize the installation of the fixing seat 3 on the recliner assembly 1.

[0023] like Figure 3 As shown, the recliner driving mechanism 4 includes a driving ring 41 and a driving disk 42, wherein the driving ring 41 is rotatably mounted on the fixing seat 3 (see Figure 1 ), the driving disc 42 is torsionally mounted on the driving ring 41. In this embodiment, the driving disc 42 is non-rotatably mounted on the driving ring 41 through the flower-shaped profile 421 on its outer surface so as to rotate with the rotation of the driving ring 41. The driving ring 41 has a through hole 411 at the center and a driving tooth 412 is provided on its surface facing away from the recliner assembly 1. The driving disc 42 has a matching hole 422 at the center and a ratchet 423 is provided on its surface facing the recliner assembly 1. In the assembled state, the ratchet 423 extends from the through hole 411 and is assembled with the recliner 12 to limit the fixing seat 3, and the synchronization rod 2 is respectively inserted into the matching hole 422 and the recliner 12 to drive the recliner 12 through the recliner driving mechanism 4.

[0024] like Figure 1 As shown, the intermediate gear mechanism 5 is composed of two sets of upper and lower intermediate gears, which are respectively mounted on the fixing seat 3. Figure 4 As shown, each set of intermediate teeth includes a bolt 51, a gear 52 and a nut 53, wherein the bolt 51 passes through the through hole 311 (see Figure 2 ) and the gear 52 extend and are mounted on the fixed seat 3 through the nut 53. In this way, the gear 52 is rotatably mounted on the bolt 51 and is connected to the driving tooth 412 (see Figure 3 ) engagement.

[0025] like Figure 5 As shown, the hand wheel mechanism 6 comprises a hand wheel ring 61 and a hand wheel disc 62, wherein the hand wheel ring 61 is rotatably mounted on the fixed seat 3 (see Figure 1 ), the hand wheel disc 62 is mounted on the hand wheel ring 61 in a torsion-proof manner. In this embodiment, the hand wheel disc 62 is mounted on the hand wheel ring 61 in a non-rotatable manner through the flower-shaped profile 621 on its outer surface so as to rotate with the rotation of the hand wheel ring 61. The hand wheel disc 62 is provided with hand wheel teeth 622 on the surface facing the recliner assembly 1, which are engaged with the gear 52 (see Figure 4 ) are engaged to drive the angle adjuster 12 through the hand wheel mechanism 6. In this embodiment, the hand wheel ring 61 is a plastic structure, and its outer surface has a flower-shaped profile 612 that is easy to hold.

[0026] like Figure 6 As shown, the automobile seat includes a backrest frame 7 and a seat frame 8, wherein the upper plate 11 of the recliner assembly 1 is welded to the side plate of the backrest frame 7, the lower plate 13 of the recliner assembly 1 is assembled to the seat frame 8, and the fixing seat 3 is fixed by a positioning pin 321 (see Figure 2 ) is assembled with the lower plate 13, the ratchet 423 of the recliner drive mechanism 4 (see Figure 3 ) and the recliner 12 are assembled to the position-limiting fixed seat 3, and the gear 52 of the intermediate gear mechanism 5 is installed on the fixed seat 3 through the bolt 51 and the nut 53 and connects the recliner drive mechanism 4 and the handwheel mechanism 6. In this way, the handwheel mechanism 6 is connected through the handwheel teeth 622 (see Figure 5 ) drives the gear 52 of the intermediate gear mechanism 5 (see Figure 4 ), the gear 52 drives the driving gear 412 of the recliner driving mechanism 4 (see Figure 3 ), the driving ring 41 drives the angle adjuster 12 through the synchronization rod 2, thereby driving the upper plate 11 to drive the backrest frame 7 to move.

[0027] Through the secondary gear transmission, the utility model realizes the operation of the hand wheel and the backrest at a specific transmission ratio, which can solve the problem that the seat backrest and the hand wheel operation direction of the external hand wheel of the differential gear angle adjuster are inconsistent, and can improve the comfort of the end customer when using the hand wheel. In particular, the external hand wheel integrates the hand wheel teeth and the gear meshing, which saves space.

[0028] The above is only a preferred embodiment of the utility model, and is not intended to limit the scope of the utility model. The above embodiments of the utility model can also be modified in various ways. That is, all simple, equivalent changes and modifications made according to the claims and the contents of the specification of the utility model application fall within the scope of protection of the claims of the utility model patent. The conventional technical contents are not described in detail in the utility model.

Claims

1. A reversing mechanism for realizing stepless manual adjustment of a seat back, characterized in that: The reversing mechanism includes a recliner assembly, a synchronization rod, a fixed seat, a recliner driving mechanism, an intermediate gear mechanism and a handwheel mechanism, wherein the recliner assembly includes an upper plate, a recliner and a lower plate, the upper plate is connected to the lower plate through the recliner so that the angle of the upper plate relative to the lower plate can be adjusted through the recliner, the recliner driving mechanism is rotatably mounted on the lower plate through the fixed seat, the handwheel teeth of the handwheel mechanism are connected to the driving teeth of the recliner driving mechanism through the gears of the intermediate gear mechanism, and the recliner driving mechanism is connected to the recliner through the synchronization rod, so that the recliner is driven through the handwheel mechanism to adjust the angle of the upper plate relative to the lower plate.

2. The reversing mechanism according to claim 1, characterized in that: The recliner driving mechanism comprises a driving ring and a driving disc, wherein the driving teeth are arranged on the surface of the driving ring facing away from the recliner assembly, the driving ring is rotatably mounted inside the fixing seat, and the driving disc is torsionally mounted on the driving ring.

3. The reversing mechanism according to claim 2, characterized in that: The center of the driving disk has a matching hole and a pawl is arranged on its surface facing the recliner assembly. The pawl and the recliner are assembled with a limiting fixing seat. The synchronization rod is respectively inserted into the matching hole and the recliner to drive the recliner through the recliner driving mechanism.

4. The reversing mechanism according to claim 1, characterized in that: The fixing seat comprises a body and a flange, wherein the body is a cylindrical structure, the flange extends radially outward from the end of the body, and a plurality of positioning pins are arranged on the surface of the flange facing away from the body, and the positioning pins are assembled with corresponding holes on the lower plate.

5. The reversing mechanism according to claim 4, characterized in that: The intermediate gear mechanism comprises two groups of intermediate gears which are symmetrically mounted on a fixed seat.

6. The reversing mechanism according to claim 5, characterized in that: The body has a through hole, and each set of intermediate teeth includes a bolt, a gear and a nut. The bolt extends through the through hole and the gear and is mounted on the fixing seat through the nut.

7. The reversing mechanism according to claim 1, characterized in that: The handwheel mechanism comprises a handwheel ring and a handwheel disc, wherein the handwheel ring is rotatably mounted on the outside of the fixing seat through a plurality of buckles evenly distributed in the circumferential direction, and the handwheel disc is torsionally mounted on the handwheel ring.

8. The reversing mechanism according to claim 7, characterized in that: The hand wheel teeth are arranged on the surface of the hand wheel disc facing the recliner assembly, and mesh with the gears to drive the recliner through the hand wheel mechanism.

9. The reversing mechanism according to claim 1, characterized in that: The car seat includes a backrest frame and a seat basin frame, wherein the upper plate is fixedly connected to the backrest frame, the lower plate is assembled with the seat basin frame, the handwheel mechanism drives the gear of the intermediate gear mechanism through the handwheel teeth, the gear drives the driving teeth of the recliner driving mechanism, and the recliner driving mechanism drives the recliner through the synchronization rod, thereby driving the upper plate to drive the backrest frame to move.

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