CN220114496U

CN220114496U - Seat backrest adjusting device

Info

Publication number: CN220114496U
Application number: CN202321087089.0U
Authority: CN
Inventors: 王俊; 熊朋; 何正远; 李航宇; 罗荣
Original assignee: Guizhou Huayang Auto Parts Co ltd
Current assignee: Guizhou Huayang Auto Parts Co ltd
Priority date: 2023-05-08
Filing date: 2023-05-08
Publication date: 2023-12-01
Anticipated expiration: 2033-05-08

Abstract

The utility model relates to the technical field of adjusting devices, and particularly discloses a seat backrest adjusting device, which comprises: the guide rail is provided with a plurality of clamping grooves which are sequentially arranged along the guide direction and are uniformly spaced; the mounting frame is slidably mounted on the guide rail and comprises an upper cover, a partition plate and a lower cover, the partition plate is arranged between the upper cover and the lower cover, a first cavity is formed between the upper cover and the partition plate, a second cavity is formed between the lower cover and the partition plate, the guide rail is connected with the second cavity in a penetrating manner, and a clearance groove corresponding to the center of the guide rail is formed in one side of the upper cover; the backrest lock is arranged in the first cavity and corresponds to the empty avoiding groove; the adjusting assembly is arranged on the mounting frame and used for limiting the relative movement between the mounting frame and the guide rail; and the toggle piece is arranged on the mounting frame and used for unlocking the adjusting assembly so that the mounting frame can move relative to the guide rail. The utility model can make the device as small and light as possible under the condition of meeting the requirements of functions, strength, rigidity and noise.

Description

Seat backrest adjusting device

Technical Field

The utility model relates to the technical field of adjusting devices, in particular to a seat back adjusting device.

Background

At present, a common backrest lock on an automobile generally has no adjusting function, the backrest lock with the adjusting function generally comprises a lock body assembly and a base assembly, basically one hole corresponds to one adjusting gear, the adjustment of a few fixed angles can be realized in a certain range, the adjusting angle is limited to be larger, generally only about 5 degrees, the structure of the backrest lock with the adjusting function is complex, the number of parts of the lock is relatively more, the volume and the weight are relatively larger, and the miniaturization and the light weight of the backrest are not facilitated; in addition, the existing backrest lock needs to be matched with the fixed lock catch, so that the fixed lock catch protrudes in the vehicle body all the time, the utilization of the space in the vehicle is not facilitated, and the risk of collision exists.

Disclosure of Invention

The purpose of the utility model is that: how to provide a seat back adjusting device with simple structure, miniaturization and light weight.

In order to achieve the above object, the present utility model provides a seat back adjusting device including:

the guide rail is provided with a plurality of clamping grooves which are sequentially arranged along the guide direction and are uniformly spaced;

the mounting frame is slidably mounted on the guide rail and comprises an upper cover, a partition plate and a lower cover, the partition plate is arranged between the upper cover and the lower cover, a first cavity is formed between the upper cover and the partition plate, a second cavity is formed between the lower cover and the partition plate, the guide rail is connected with the second cavity in a penetrating manner, and a clearance groove corresponding to the center of the guide rail is formed in one side of the upper cover;

the backrest lock is arranged in the first cavity and corresponds to the empty avoiding groove;

the adjusting assembly is arranged on the mounting frame and used for limiting the relative movement between the mounting frame and the guide rail; and

and the stirring piece is arranged on the mounting frame and used for unlocking the adjusting assembly so that the mounting frame can move relative to the guide rail.

Further preferably, the backrest lock comprises:

the first rotating shaft is arranged between the upper cover and the partition plate;

the lock hook is arranged in the first cavity and is rotationally connected with the first rotating shaft;

the second rotating shaft is arranged between the upper cover and the partition plate; and

the pawl is arranged in the first cavity, the pawl is rotationally connected with the second rotating shaft, and the pawl is matched with the latch hook to lock the latch.

Further preferably, a space is formed between the plane in which the latch hook and/or the pawl lie and the partition plate.

Further preferably, the backrest lock further comprises a first elastic member, the first elastic member comprising a pawl end and a shackle end;

the pawl end is sleeved on the upper second rotating shaft, and the pawl always has a tendency of rotating around the second rotating shaft along a first direction under the action of the pawl end;

the lock hook end is sleeved on the first rotating shaft, and the lock hook always has a tendency of rotating around the first rotating shaft along the second direction under the action of the lock hook end;

wherein the first direction and the second direction are opposite.

Further preferably, the pawl is further provided with an unlocking member connecting hole, and the unlocking member connecting hole is used for being connected with the unlocking member so that the pawl can rotate around the second rotating shaft along the reverse direction of the first direction to unlock.

Further preferably, the adjusting components are arranged at one end, far away from the empty slot, of the mounting frame, the number of the adjusting components is at least three, and the toggle pieces synchronously act on each group of the adjusting components.

Further preferably, the adjusting assembly includes:

an abutting portion provided in the first cavity;

the locking part is arranged at one end of the abutting part and can penetrate through the partition plate to extend into the clamping groove of the guide rail; and

and a guide part arranged at the other end of the abutting part, wherein one end of the guide part can extend out of the upper cover.

Further preferably, the diameter of the abutment portion is larger than the diameters of the locking portion and the guide portion.

Further preferably, the guide portion is sleeved with a second elastic member, and the second elastic member is abutted between the abutting portion and the upper cover.

Further preferably, the stirring piece is rotatably disposed on the upper cover or the partition board, one end of the stirring piece extends between the abutting portion and the partition board, and the other end extends to the outer side of the upper cover.

Compared with the prior art, the seat backrest adjusting device provided by the utility model has the beneficial effects that:

according to the utility model, the clamping grooves are arranged on the guide rail at intervals, so that the adjusting assembly can be matched with the clamping grooves to realize locking, the relative movement between the mounting frame and the guide rail is limited, the adjusting assembly can be unlocked through the driving piece, the mounting frame can be moved to any required position along the guide rail, the angle adjustment is more convenient, and the locking of the seat back can be realized by meshing connection of the lock catch and the backrest lock after the adjustment is in place, so that the operation is simple and convenient; the mounting frame consists of an upper cover, a partition plate and a lower cover, is favorable for the disassembly and assembly of the whole device, can meet the requirements of structural strength and rigidity, and ensures that the device is miniaturized and light as much as possible; in addition, the clearance groove is arranged on the central line of the guide rail, so that the stress and the motion performance of the backrest lock can be optimized, and the noise generated between parts is reduced; in addition, the retaining ring can be arranged in a movable hidden mode to be matched with the backrest lock so as to improve the utilization rate of the space in the vehicle.

Drawings

Fig. 1 is a top view of a seat back adjustment device according to the present utility model.

Fig. 2 is an assembly view of the backrest lock and the mounting bracket of the present utility model.

FIG. 3 is a cross-sectional view of the utility model taken along section C-C of FIG. 1.

Fig. 4 is a cross-sectional view of the utility model taken along section D-D in fig. 1.

Fig. 5 is an exploded view of the back lock of the present utility model.

Fig. 6 is a view showing the unlocking state of the backrest lock and the lock catch according to the present utility model.

Fig. 7 is a diagram showing the state of the backrest lock and the buckle lock according to the present utility model.

In the figure:

10. a guide rail; 11. a clamping groove;

20. a mounting frame; 21. an upper cover; 22. a partition plate; 23. a lower cover; 24. a first cavity; 25. a second cavity; 26. an empty-avoiding groove;

30. a backrest lock; 31. a first rotating shaft; 32. a latch hook; 33. a second rotating shaft; 34. a pawl; 341. unlocking piece connecting holes; 35. a first elastic member; 351. a pawl end; 352. a latch hook end;

40. an adjustment assembly; 41. an abutting portion; 42. a guide part; 43. a locking part; 44. a second elastic member;

50. locking;

60. a driving plate;

A. a first direction; B. a second direction; q, the third direction; p, fourth direction.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "between", "near", "far", "one end", "the other end", "between", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," "third," "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 7, the present utility model provides a seat back adjusting device, which has advantages of simple structure, small volume and few parts, and in particular, includes a guide rail 10, a mounting frame 20, a back lock 30 and an adjusting assembly 40, wherein the back lock 30 and the adjusting assembly 40 are integrated on the mounting frame 20, and the mounting frame 20 is slidably connected with the guide rail 10, so as to meet the requirement of multi-angle adjustment of the back lock 30.

In some examples of the present utility model, as shown in fig. 4, the mounting frame 20 includes an upper cover 21, a partition 22 and a lower cover 23, the partition 22 is disposed between the upper cover 21 and the lower cover 23, a first cavity 24 is formed between the upper cover 21 and the partition 22, a second cavity 25 is formed between the lower cover 23 and the partition 22, the guide rail 10 is connected to the second cavity 25 in a penetrating manner, and the backrest lock 30 is disposed in the first cavity 24, so that, in order to ensure that the stress and the movement performance of the backrest lock 30 are optimal, a space avoiding groove 26 corresponding to the center of the guide rail 10 is disposed at one side of the upper cover 21, and the backrest lock 30 is disposed corresponding to the space avoiding groove 26, and in use, the latch 50 is connected to the backrest lock 30 through the space avoiding groove 26, i.e. the engagement position of the backrest lock 30 and the latch 50 is aligned with the center line of the guide rail 10, so that the stress and the movement performance of the backrest lock 30 can be ensured to be in an optimal state.

Specifically, referring to fig. 5, the backrest lock 30 includes a first rotating shaft 31, a second rotating shaft 33, a latch hook 32 and a pawl 34, wherein the first rotating shaft 31 is disposed between the upper cover 21 and the partition 22, the latch hook 32 is disposed in the first cavity 24, the latch hook 32 is rotationally connected with the first rotating shaft 31, the second rotating shaft 33 is disposed between the upper cover 21 and the partition 22, the pawl 34 is disposed in the first cavity 24, the pawl 34 is rotationally connected with the second rotating shaft 33, and the pawl 34 cooperates with the latch hook 32 to lock the latch 50.

Further, as shown in fig. 6, the back lock 30 further includes a first elastic member 35, the first elastic member 35 including a pawl end 351 and a shackle end 352; the pawl end 351 is sleeved on the upper second rotating shaft 33, and the pawl 34 always has a tendency to rotate along the first direction A around the second rotating shaft 33 under the action of the pawl end 351; the latch hook end 352 is sleeved on the first rotating shaft 31, and the latch hook 32 always has a tendency to rotate around the first rotating shaft 31 along the second direction B under the action of the latch hook end 352; wherein the directions of the first direction A and the second direction B are opposite; when the latch 50 enters the space avoiding groove 26 in the fourth direction P and overcomes the elastic force of the first elastic member 35, the latch hook 32 rotates around the first rotation shaft 31 in the opposite direction of the second direction B, and at the same time, the pawl 34 also rotates around the second rotation shaft 33 in the opposite direction of the first direction a until the latch 50 is connected with the latch hook 32, as shown in fig. 7, at which time the angle of the seat back is locked.

In some examples, as shown in fig. 6, the first direction a represents a clockwise direction and the second direction B represents a counterclockwise direction.

When unlocking is required, that is, when the lock catch 50 is separated from the lock hook 32, an acting force opposite to the first direction a needs to be applied to the pawl 34, for this purpose, an unlocking member connecting hole 341 is further provided on the pawl 34, the unlocking member connecting hole 341 is used for connecting with an unlocking member, the unlocking member drives the pawl 34 to rotate in the opposite direction of the first direction a, at this time, the pawl 34 is separated from the lock hook 32, and the lock hook 32 is rotated and reset in the second direction B under the action of the first elastic member 35, at this time, the lock catch 50 can be separated from the lock hook 32 in the third direction Q, as shown in fig. 6, so as to realize unlocking.

In some examples of the utility model, to allow the latch hook 32, the pawl 34 to effectively engage the latch 50 on the seat, the latch hook 32, the pawl 34 may be positioned within the first cavity 24 on a side adjacent to the upper cover 21, even if offset from the rail 10 by a distance to form a gap; in addition, the offset is generally related to the size of the engaged latch 50, which is generally greater than or equal to 5mm, to ensure that the shackle 32, pawl 34 effectively engages the latch 50 on the seat.

In some examples of the present utility model, in order to enable the mounting frame 20 to be capable of moving and adjusting on the guide rail 10, the adjusting component 40 is disposed on the mounting frame 20, and a plurality of clamping grooves 11 are formed on the guide rail 10, which are sequentially arranged along the guiding direction and are uniformly spaced, and the adjusting component 40 is matched with the clamping grooves 11 to limit the relative movement between the mounting frame 20 and the guide rail 10, so as to achieve the purpose of multi-angle adjustment of the backrest.

In the above example, to avoid interference between the adjustment assembly 40 and the backrest lock 30, the adjustment assembly 40 is disposed at an end of the mounting bracket 20 remote from the clearance groove 26.

In addition, since the clamping grooves 11 are sequentially arranged at intervals along the guiding direction of the guide rail 10, the number of the adjusting assemblies 40 is at least three, so that at least one group of adjusting assemblies 40 can be matched with the clamping grooves 11, and effective locking effect can be realized.

Specifically, the adjusting component 40 includes an abutment portion 41, a guiding portion 42 and a locking portion 43, where the abutment portion 41 is disposed in the first cavity 24, the locking portion 43 is disposed at one end of the abutment portion 41, the locking portion 43 can penetrate through the partition 22 and extend into the clamping groove 11 of the guide rail 10, the guiding portion 42 is disposed at the other end of the abutment portion 41, one end of the guiding portion 42 can extend out of the upper cover 21, the abutment portion 41, the guiding portion 42 and the locking portion 43 are coaxially disposed, the adjusting component 40 can move in the axial direction to ensure that the locking portion 43 can extend into the clamping groove 11 to achieve locking, or the locking portion 43 is separated from the clamping groove 11 to push the mounting frame 20.

Further, in order to limit the adjustment assembly 40, the diameter of the abutting portion 41 is set to be larger than the diameters of the locking portion 43 and the guide portion 42, that is, the abutting portion 41 cannot move in the direction of the guide rail 10 through the partition 22, and only the locking portion 43 can enter the card slot 11.

In addition, please combine fig. 4, in order to realize that locking portion 43 can follow draw-in groove 11 and shift out, this device still includes stirring piece 60, stirring piece 60 rotates and locates upper cover 21 or baffle 22, stirring piece 60's one end extends to between butt portion 41 and the baffle 22, the other end extends to the upper cover 21 outside, when pressing stirring piece 60's one end, its other end can jack-up butt portion 41 to drive locking portion 43 upwards to remove and break away from draw-in groove 11, and then realize the unblock of mounting bracket 20 and guide rail 10, can adjust the back angle this moment, thereby solve the limited problem of prior art angle of adjustment.

When the external force to the toggle piece 60 is withdrawn, in order to ensure that the locking portion 43 can be reset and enter the clamping groove 11 to achieve the locking effect, therefore, the second elastic piece 44 is sleeved on the guide portion 42, the second elastic piece 44 is abutted between the abutting portion 41 and the upper cover 21, after the external force is withdrawn, the abutting portion 41 moves towards the direction close to the partition plate 22 under the action of elastic force, so that the locking portion 43 is pushed into the clamping groove 11, and at the moment, the backrest angle is fixed and cannot be adjusted.

In some examples, since the number of the adjusting assemblies 40 is at least three, for synchronization, the toggle piece 60 is configured to act on each group of adjusting assemblies 40 synchronously, so as to achieve linkage, reduce operation difficulty, and improve adjustment efficiency.

As shown in fig. 1 to 7, the working process of the utility model is as follows:

when the lock catch 50 enters the clearance groove 26 along the fourth direction P and overcomes the elasticity of the first elastic member 35, the lock hook 32 rotates around the first rotating shaft 31 along the opposite direction of the second direction B, and meanwhile, the pawl 34 also rotates around the second rotating shaft 33 along the opposite direction of the first direction a until the lock catch 50 is connected with the lock hook 32, and at this time, the angle of the seat back is locked; when unlocking is needed, that is, when the lock catch 50 is separated from the lock hook 32, an acting force opposite to the first direction a needs to be applied to the pawl 34, for this purpose, an unlocking piece connecting hole 341 is further provided on the pawl 34, the unlocking piece connecting hole 341 is used for connecting with an unlocking piece, the pawl 34 is driven to rotate in the opposite direction of the first direction a by the unlocking piece, at this time, the pawl 34 is separated from the lock hook 32, and the lock hook 32 is rotated and reset in the second direction B under the action of the first elastic piece 35, at this time, the lock catch 50 can be separated from the lock hook 32 in the third direction Q, as shown in fig. 6, so as to realize unlocking;

when one end of the shifting piece 60 extending out of the upper cover 21 is pressed, the other end of the shifting piece can jack up the abutting part 41, so that the locking part 43 is driven to move upwards to be separated from the clamping groove 11, the unlocking of the mounting frame 20 and the guide rail 10 is realized, and the backrest angle can be adjusted at the moment; after the external force is removed, the abutting portion 41 moves in a direction approaching the partition 22 by the elastic force, so that the locking portion 43 is pushed into the clamping groove 11, and at this time, the backrest angle is fixed and cannot be adjusted.

In summary, according to the seat backrest adjusting device provided by the embodiment of the utility model, the clamping grooves 11 are arranged on the guide rail 10 at intervals, so that the adjusting assembly 40 can be matched with the clamping grooves 11 to realize locking, the relative movement between the mounting frame 20 and the guide rail 10 is limited, the adjusting assembly 40 can be unlocked through the stirring piece 60, the mounting frame 20 can be moved to any required position along the guide rail 10, the angle adjustment is more convenient, and after the adjustment is in place, the locking buckle is meshed with the backrest lock 30 to realize the locking of the seat backrest, so that the operation is simple and convenient; the mounting frame 20 consists of an upper cover 21, a partition plate 22 and a lower cover 23, is favorable for the disassembly and assembly of the whole device, can meet the requirements of structural strength and rigidity, and ensures that the device is miniaturized and light as much as possible; in addition, the clearance groove 26 is arranged on the central line of the guide rail 10, so that the stress and the motion performance of the backrest lock 30 can be optimized, the noise generated between parts is reduced, and the utility model can be miniaturized and lightened as much as possible under the requirements of functions, strength, rigidity, noise and the like; in addition, the retaining ring can be arranged in a movable hidden mode to be matched with the backrest lock so as to improve the utilization rate of the space in the vehicle.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model. While there has been shown and described what are at present considered to be fundamental principles, main features and advantages of the present utility model, it will be apparent to those skilled in the art that the present utility model is not limited to the details of the foregoing preferred embodiments, and that the examples should be considered as exemplary and not limiting, the scope of the present utility model being defined by the appended claims rather than by the foregoing description, and it is therefore intended to include within the utility model all changes which fall within the meaning and range of equivalency of the claims.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail herein, but rather is provided for the purpose of enabling those skilled in the art to make and use the embodiments described herein.

Claims

1. A seat back adjustment apparatus, comprising:

2. The seat back adjustment apparatus of claim 1, wherein the back lock comprises:

3. A seat back adjustment device according to claim 2, wherein the latch hook and/or the pawl are spaced from the partition in a plane in which they lie.

4. The seat back adjustment apparatus of claim 2 wherein the back lock further comprises a first resilient member, the first resilient member comprising a pawl end and a shackle end;

the pawl end is sleeved on the second rotating shaft, and the pawl always has a tendency of rotating around the second rotating shaft along a first direction under the action of the pawl end;

wherein the first direction and the second direction are opposite.

5. The seat back adjustment apparatus according to claim 4, wherein the pawl is further provided with an unlocking piece connecting hole for connecting with an unlocking piece so that the pawl can be rotated around the second rotation shaft in a direction opposite to the first direction to unlock.

6. The seat back adjustment device of claim 1, wherein the adjustment assemblies are disposed at an end of the mounting frame away from the clearance groove, the number of the adjustment assemblies is at least three, and the toggle pieces act on each of the adjustment assemblies synchronously.

7. The seat back adjustment device of claim 6, wherein the adjustment assembly comprises:

an abutting portion provided in the first cavity;

8. The seat back adjustment apparatus according to claim 7, wherein the abutment portion has a diameter larger than the diameters of the locking portion and the guide portion.

9. The seat back adjustment apparatus according to claim 7, wherein the guide portion is sleeved with a second elastic member, and the second elastic member abuts between the abutting portion and the upper cover.

10. The seat back adjustment apparatus according to claim 7, wherein the dial is rotatably provided to the upper cover or the partition plate, one end of the dial extends between the abutting portion and the partition plate, and the other end extends to the outside of the upper cover.