Angle adjuster for automobile seat backrest

Abstract

The utility model relates to an angle adjuster for an automobile seat backrest, and relates to the technical field of automobile seats, the angle adjuster comprises a guide rail plate, and a plurality of clamping grooves are formed in the guide rail plate; the sliding assembly comprises a sliding seat and a bottom plate, and the sliding seat and the bottom plate are arranged on the guide rail plate in a sliding and sleeving mode; the locking assembly comprises a lock pin, an opening lever and a pull rope, the locking assembly is inserted into the sliding seat and can move in the axial direction, and the lock pin is connected with the clamping groove in the guide rail plate in a clamped mode; the opening lever is rotationally connected to the sliding base and used for lifting the lock pin. One end of the pull rope is connected with the opening lever and used for driving the opening lever to rotate on the sliding base. The guide piece comprises a guide sleeve, the guide sleeve is installed on the sliding seat, and the pull rope penetrates through the guide sleeve; and the pinch plate is mounted on the bottom plate. According to the invention, adjustment of more gears is realized, and the use requirements of users are met; meanwhile, in the pulling process of the pull rope, the guide sleeve guides the pull rope, and the guide sleeve can enable the pull rope to be pulled in different directions.

Description

Technical Field

[0001] The present application relates to the technical field of automobile seats, and in particular to an angle adjuster for an automobile seat backrest. Background Art

[0002] At present, the car seat back refers to the back part of the car seat, which is usually located at the back of the seat and is used to support the passenger's back and provide a comfortable sitting posture and support. The adjuster of the car seat back is used to adjust the tilt angle of the seat back to meet the personal comfort needs of the driver or passenger.

[0003] The existing Chinese patent with publication number CN111452680A discloses a car seat back angle adjustment mechanism, which is composed of an unlocking mechanism and a guide rail fixed on the vehicle body; the unlocking mechanism is fixed on the seat back, and the seat back angle is adjustable. The unlocking mechanism includes a handle fixed on the seat back, a connecting steel cable, a locking pin and guide rollers cooperating with two guide rails; the guide rail is fixed to the vehicle body sheet metal and is used to lock the seat back position, and a plurality of locking holes for fixing the locking pin are opened on the guide rail; the handle can drive the locking pin to disengage or lock from the guide rail locking hole through the connecting steel cable and the spring.

[0004] The above-mentioned car seat back angle adjustment structure adopts a locking pin fixed on the back to cooperate with a guide rail fixed on the vehicle body. When the seat back needs to be adjusted, the connecting steel cable lifts the locking pin, and when the seat moves to a specified position, the spring clamps the locking pin on the locking hole of the guide rail.

[0005] In the actual process of adjusting the seat back angle, more delicate multi-angle gears are needed to adjust the seat back. However, one locking hole on the guide rail only corresponds to one adjustment gear, resulting in fewer adjustable gears for the seat back angle, affecting the adjustment of the seat back angle. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an angle adjuster for a car seat back, which solves the technical problem that one locking hole on a guide rail corresponds to only one adjustment gear, resulting in fewer adjustable gears for the seat back angle, thus affecting the adjustment of the seat back angle.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The camshaft of the vehicle seat according to claim 1, wherein the camshaft has a plurality of locking grooves, the plurality of locking grooves being arranged on the camshaft and the plurality of locking grooves being arranged on the camshaft.

[0009] Furthermore, a support sleeve is provided between the sliding seat and the bottom plate, a sliding groove is formed on the inner side of the support sleeve, and the guide rail plate passes through the sliding groove of the support sleeve.

[0010] Furthermore, a slot is provided on the opening lever, and the slot corresponds to several of the locking pins, and the locking pins pass through the slot of the opening lever; support rings are provided on several of the locking pins, and a locking spring is provided between the support ring and the sliding seat, and the locking spring is pressed tightly between the sliding seat and the support ring.

[0011] Furthermore, a first bayonet is provided on the opening lever, a second bayonet is provided on the sliding seat, a snap ring is provided on the opening lever, a limiting groove is provided on the snap ring, the limiting groove on the snap ring is clamped in the first bayonet, a rotating groove is provided on the guide sleeve, and the rotating groove of the guide sleeve is rotatably connected in the second bayonet; one end of the pull rope passes through the guide sleeve and the snap ring in sequence, and a snap ball is provided on the end of the pull rope passing through the snap ring, and the snap ball is pressed tightly against the snap ring.

[0012] Furthermore, a guide arc surface is formed on the guide sleeve, and the pull rope is laid on the guide arc surface.

[0013] Furthermore, one end of the guide rail plate is bent to form a first mounting plate, and the other end is mounted with a second mounting plate, and a reinforcing rib is provided between the first mounting plate and the guide rail plate, and the reinforcing rib is connected to the guide rail plate.

[0014] Furthermore, a pin plate is provided on the sliding seat, and a plurality of locking pins pass through the pin plate. A noise reduction ring is provided on the locking pin, and the noise reduction ring is sleeved on the locking pin.

[0015] In summary, the present application includes at least one of the following beneficial technical effects of a recliner for a car seat backrest:

[0016] The pull rope drives the opening lever to rotate on the sliding seat. During the pulling process of the pull rope, the guide sleeve guides the guide rope. As the pull rope is pulled, the opening lever lifts the locking pin. When the sliding seat slides to the specified position, any two of the multiple locking pins are inserted into the two slots, so that more gear adjustments can be achieved under the condition of opening the same number of slots to meet the user's usage needs. On the other hand, by inserting the two locking pins into different slots for locking, the reliability of the locking of the sliding seat and the guide plate is improved. At the same time, during the pulling process of the pull rope, the guide sleeve guides the pull rope, and the guide sleeve can pull the pull rope in different directions.

[0017] When unlocking is required, the opening lever is pulled to lift a plurality of locking pins simultaneously out of the card slot, and the sliding seat can slide on the guide rail plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a recliner for a car seat backrest, which is mainly embodied in this embodiment;

[0019] Figure 2 This is an exploded schematic diagram of the regulator structure mainly embodied in this embodiment;

[0020] Figure 3 This is a schematic diagram of the structure of the guide rail plate mainly embodied in this embodiment;

[0021] Figure 4 This is a schematic diagram of the structure of the sliding seat mainly embodied in this embodiment;

[0022] Figure 5 This is a cross-sectional view of the lock pin structure mainly embodied in this embodiment;

[0023] Figure 6 It is a schematic diagram of the guide sleeve structure mainly embodied in this embodiment.

[0024] 1. Guide rail plate; 11. Slot; 12. First mounting plate; 121. Reinforcing rib; 13. Second mounting plate; 2. Sliding assembly; 21. Sliding seat; 22. Bottom plate; 23. Buckle plate; 24. Support sleeve; 241. Sliding groove; 242. Support protrusion; 25. Guide cylinder; 26. Pin plate; 3. Locking assembly; 31. Locking pin; 311. Support ring; 312. Locking spring; 313. Noise reduction ring; 32. Support seat; 33. Opening lever; 331. Slot; 332. Snap ring; 333. Limiting groove; 34. Pull rope; 341. Snap ball; 35. Torsion spring; 36. First bayonet; 37. Second bayonet; 4. Guide member; 41. Guide sleeve; 42. Rotating groove; 43. Guide arc surface. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments.

[0026] The following is combined with Figure 1-6 This application is described in further detail.

[0027] The embodiment of the present application discloses a recliner for a car seat back.

[0028] Reference Figure 1 A recliner for a car seat back includes a guide plate 1, a sliding assembly 2 is arranged on the guide plate 1, and the sliding assembly 2 is slidably mounted on the guide plate 1. In addition, a locking assembly 3 is installed on the guide plate 1, and when the sliding assembly 2 slides to a specified position, the locking assembly 3 locks the sliding assembly 2 on the guide plate 1.

[0029] Reference Figure 2-Figure 3 The guide rail plate 1 is in an arc shape as a whole, and a card slot 11 is provided on the guide rail plate 1. The card slot 11 is evenly spaced at four locations along the arc direction of the guide rail plate 1, and the cross section of the card slot 11 is a square groove. In addition, one end of the guide rail plate 1 in the arc direction is bent to form a first mounting plate 12. A reinforcing rib 121 is provided between the first mounting plate 12 and the guide rail plate 1, and one side of the reinforcing rib 121 is pressed against the first mounting plate 12, and the reinforcing rib 121 is clamped on the guide rail plate 1.

[0030] The other end of the guide rail plate 1 in the arc direction is provided with a second mounting plate 13, and the second mounting plate 13 is mounted on the guide rail plate 1 by screws. When in use, the guide rail plate 1 is mounted on the vehicle body through the first mounting plate 12 and the second mounting plate 13.

[0031] Reference Figure 2 The sliding assembly 2 includes a sliding seat 21 and a bottom plate 22. The bottom plate 22 is mounted on the sliding seat 21 by screws, and the guide rail plate 1 passes between the sliding seat 21 and the bottom plate 22. When in use, the sliding seat 21 and the bottom plate 22 slide between the first mounting plate 12 and the second mounting plate 13 along the arc direction of the guide rail plate 1. At the same time, a gusset plate 23 is provided on the side of the bottom plate 22 in the thickness direction away from the sliding, and the gusset plate 23 is welded to the bottom plate 22.

[0032] Reference Figure 3In order to improve the stability of the sliding seat 21 and the bottom plate 22 sliding on the guide rail plate 1, a support sleeve 24 is arranged between the sliding seat 21 and the bottom plate 22, and two support sleeves 24 are arranged between the sliding seat 21 and the bottom plate 22, and the two support sleeves 24 are arranged opposite to each other, and a sliding groove 241 is formed between the two oppositely arranged support sleeves 24. The guide rail plate 1 passes through the sliding groove 241 between the two support sleeves 24. In addition, support protrusions 242 are formed on the inner sides of the two support sleeves 24, and a plurality of support protrusions 242 are arranged on the support sleeves 24 at intervals, and one end of the plurality of support protrusions 242 is integrally formed with the support sleeve 24, and the other end is in contact with the guide rail plate 1. Thereby, the stability of the sliding seat 21 sliding on the guide rail plate 1 is improved.

[0033] Furthermore, the support sleeve 24 is made of plastic, and both ends of the support sleeve 24 are folded toward one side close to the sliding seat 21 and the bottom plate 22. Since the support sleeve 24 is made of plastic, it has a certain elasticity, thereby reducing the sound generated when the sliding seat 21 hits the first mounting plate 12 and the second mounting plate 13 at the end of the guide plate 1, thereby improving the quiet effect of adjusting the car seat back.

[0034] Reference Figure 4 The locking assembly 3 includes a locking pin 31, and a plurality of locking pins 31 are arranged on the sliding seat 21 at intervals. Preferably, three locking pins 31 are evenly spaced on the sliding seat 21. The three locking pins 31 are arranged vertically as a whole, and the three locking pins 31 are inserted into the sliding seat 21 and can move axially. Furthermore, since the slot 11 is a square slot, the shortest distance between the side walls of two adjacent square slots 11 is equal to the shortest distance between the outer circumferences of two adjacent locking pins 31, and the longest distance between the outer circumferences of two locking pins 31 is equal to the longest distance between the side walls of two adjacent square slots 11.

[0035] When the sliding seat 21 slides to the specified position along the guide plate 1, any two locking pins 31 are engaged in the slots 11 on the guide plate 1. On the one hand, by inserting any two of the three locking pins 31 into two adjacent slots 11, the sliding seat 21 can cooperate with the slots 11 to achieve more gear adjustments under the condition of moving the same distance along the guide plate 1, thereby meeting the user's usage needs. On the other hand, by inserting the two locking pins 31 into different slots 11 for locking, the reliability of the sliding seat 21 and the guide plate 1 when locked is improved, and the two locking pins 31 are respectively engaged with the opposite side walls of the two slots 11, thereby realizing the position limitation of the sliding plate in the guide direction of the guide plate 1.

[0036] When unlocking is required, the three locking pins 31 are lifted up and away from the locking slots 11 at the same time, and the sliding seat 21 can slide freely along the guiding direction of the guide rail plate 1 .

[0037] Reference Figure 5 In order to improve the convenience of the lock pin 31 moving on the sliding seat 21, a support seat 32 is provided on the sliding seat 21, and the support seat 32 is installed on the sliding seat 21 by screws. Furthermore, an opening lever 33 is provided on the support seat 32, and the opening lever 33 is rotatably connected to the support seat 32. A slot 331 is provided on the side of the opening lever 33 close to the sliding seat 21, and the slot 331 corresponds to the lock pin 31, and the slot 331 is open on one side facing the horizontal direction. When in use, the three lock pins 31 pass through the corresponding slots 331 on the opening lever 33. The three locking pins 31 are each provided with a support ring 311, which is fixed on the locking pins 31. When the three locking pins 31 need to be lifted together, the opening lever 33 rotates on the support seat 32. As the opening lever 33 rotates, the side of the opening lever 33 close to the slot 331 rises. As the opening lever 33 rises, the support ring 311 on the locking pin 31 is placed on the opening lever 33, so that the three locking pins 31 can be lifted together.

[0038] When the lock pins 31 are lifted, in order to enable the lock pins 31 to be inserted into the slots 11 of the guide plate 1, the three lock pins 31 are provided with locking springs 312, which are sleeved on the corresponding lock pins 31, and the locking springs 312 are pressed tightly between the sliding seat 21 and the support ring 311. When the three lock pins 31 are lifted, the locking springs 312 on the three lock pins 31 are compressed, and when the lifting springs are released, the lock pins 31 move to the side close to the guide plate 1 under the action of the locking springs 312.

[0039] In order to improve the stability of the movement of the lock pin 31 during the movement of the lock pin 31 on the sliding seat 21, a guide cylinder 25 is provided on the sliding seat 21. The guide cylinder 25 corresponds to the lock pin 31, and one end of the lock pin 31 passes through the guide cylinder 25 on the sliding seat. When in use, the axial movement of the lock pin 31 is guided by the guide cylinder 25, thereby improving the stability of the movement of the lock pin 31. Furthermore, a pin plate 26 is welded on the sliding seat 21, and one end of the lock pin 31 close to the guide plate 1 passes through the pin plate 26. The position of the lock pin 31 is limited by the pin plate 26, thereby improving the stability of the lock pin 31 being clamped on the guide plate 1.

[0040] Furthermore, when the locking spring 312 moves the locking pin 31 to the side close to the guide rail plate 1, in order to reduce the sound generated by the locking pin 31 hitting the pin plate 26, the three locking pins 31 are sleeved with a noise reduction ring 313, which is made of rubber. When the locking pin 31 hits the pin plate 26, the noise reduction ring 313 made of rubber contacts the pin plate 26, thereby reducing the sound when the locking pin 31 locks the guide rail plate 1.

[0041] In order to improve the convenience of the opening lever 33 rotating on the support seat 32, a pull rope 34 is provided at a portion of the opening lever 33 away from the sliding seat 21. One end of the pull rope 34 is connected to the opening lever 33, and the other end extends to a side away from the opening lever 33. When in use, the pull rope 34 is pulled to drive the opening lever 33 to rotate on the support seat 32. When the pull rope 34 is released, in order to enable the opening lever 33 to quickly recover, a torsion spring 35 is provided between the opening lever 33 and the sliding seat 21. The torsion spring 35 is sleeved on the support seat 32, and the two ends of the torsion spring 35 are respectively pressed against the opening lever 33 and the sliding seat 21. When the opening lever 33 lifts the lock pin 31, the torsion spring 35 is compressed. When the pull rope 34 is released, the torsion spring 35 quickly resets the opening lever 33.

[0042] During the installation process, different vehicle models have different designs, which will result in different pulling directions of the pull cord 34. In order to improve the convenience of the pull cord 34 pulling the opening lever 33, a first bayonet 36 is provided on the side of the opening lever 33 away from the sliding seat 21, and a second bayonet 37 is provided on the sliding seat 21.

[0043] The opening lever 33 is provided with a snap ring 332 , and a limiting groove 333 is provided on the snap ring 332 . When in use, the snap ring 332 is snapped into the first snap opening 36 of the opening lever 33 through the limiting groove 333 .

[0044] Reference Figure 6 The sliding seat 21 is provided with a guide member 4, which includes a guide sleeve 41. A rotation groove 42 is provided at one end of the guide sleeve 41. When in use, the guide sleeve 41 is clamped on the second clamping hole 37 of the sliding seat 21 through the rotation groove 42. One end of the pull rope 34 passes through the guide sleeve 41 and the clamping ring 332 in sequence, and a clamping ball 341 is provided at the end of the pull rope 34 passing through the clamping ring 332. The clamping ball 341 is connected to the pull rope 34. When the pull rope 34 is pulled, the clamping ball 341 at one end of the pull rope 34 is pressed against the clamping ring 332.

[0045] When in use, when the adjuster of the automobile seat backrest of the present application is installed in different models, the opening lever 33 will only move closer to the side close to the sliding seat 21 in the same direction. In addition, the guide sleeve 41 is bent at 100 degrees. After the guide sleeve 41 is bent, the use space required for the adjuster is reduced. Since the guide sleeve 41 is rotatably installed on the sliding seat 21, the pull rope 34 can be pulled in different directions. During use, in order to enable the guide sleeve 41 to be installed on the sliding seat 21, the second bayonet 37 is opened toward the side of the first mounting plate 12. Due to the restriction of the first mounting plate 12 on the sliding seat 21, the guide sleeve 41 can only rotate toward the side away from the second bayonet 37.

[0046] When the pull cord 34 is pulled, the pull cord 34 will rub against the guide sleeve 41. However, after long-term use, the pull cord 34 is prone to breakage. In order to increase the service life of the pull cord 34, a guide arc surface 43 is formed at the corner of the guide sleeve 41. The pull cord 34 is placed on the guide arc surface 43, and the pull cord 34 is guided by the guide arc surface 43, thereby reducing the friction between the pull cord 34 and the guide sleeve 41.

[0047] Furthermore, the bending part of the guide sleeve 41 is open, and by exposing the pull rope 34 to the air hole, the heat generated by the friction between the pull rope 34 and the guide sleeve 41 can be reduced, and the service life of the pull rope 34 can be further improved.

[0048] The implementation principle of the angle adjuster for a car seat back in the embodiment of the present application is as follows: pull the pull rope 34, and after being guided by the guide sleeve 41, the pull rope 34 pulls the opening lever 33 to the side close to the sliding seat 21. At this time, the opening lever 33 rotates. During the rotation of the opening lever 33, the opening lever 33 lifts the three locking pins 31 at the same time, and then the sliding seat 21 slides on the guide rail plate 1. When the sliding seat 21 slides to the specified position, release the pull rope 34. At this time, the opening lever 33 rotates to the side close to the sliding seat 21 under the action of the torsion spring 35. At this time, the locking pin 31 moves to the side close to the guide rail plate 1 under the action of the locking spring 312. After the locking pin 31 is inserted into the slot 11 of the guide rail plate 1, the adjustment of the seat back angle is completed.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A recliner for a car seat back, characterized in that: include: A guide rail plate (1), wherein a plurality of slots (11) are provided on the guide rail plate (1); A sliding assembly (2), the sliding assembly (2) comprising a sliding seat (21) and a bottom plate (22), the sliding seat (21) and the bottom plate (22) being slidably sleeved on the guide rail plate (1); A locking assembly (3), the locking assembly (3) comprising a locking pin (31), an opening lever (33) and a pull rope (34), wherein a plurality of the locking pins (31) are arranged at intervals on the sliding seat (21), the plurality of the locking pins (31) are sequentially inserted into the sliding seat (21) and are capable of axial movement, and two of the plurality of the locking pins (31) are engaged with the slots (11) on the guide rail plate (1); the opening lever (33) is rotatably connected to the sliding seat (21) for lifting the locking pin (31); one end of the pull rope (34) is connected to the opening lever (33) for driving the opening lever (33) to rotate on the sliding seat (21); A guide member (4), the guide member (4) comprising a guide sleeve (41), the guide sleeve (41) being mounted on the sliding seat (21), and the pull rope (34) passing through the guide sleeve (41); A gusset plate (23), wherein the gusset plate (23) is mounted on the base plate (22).

2. The recliner for a car seat back according to claim 1, characterized in that: A support sleeve (24) is provided between the sliding seat (21) and the bottom plate (22), a sliding groove (241) is formed on the inner side of the support sleeve (24), and the guide rail plate (1) passes through the sliding groove (241) of the support sleeve (24).

3. The recliner for a car seat back according to claim 1, characterized in that: The opening lever (33) is provided with a slot (331), the slot (331) corresponds to a plurality of the locking pins (31), and the locking pins (31) pass through the slot (331) of the opening lever (33); a supporting ring (311) is provided on each of the locking pins (31), a locking spring (312) is provided between the supporting ring (311) and the sliding seat (21), and the locking spring (312) is pressed tightly between the sliding seat (21) and the supporting ring (311).

4. The recliner for a car seat back according to claim 1, characterized in that: The opening lever (33) is provided with a first bayonet (36), the sliding seat (21) is provided with a second bayonet (37), the opening lever (33) is provided with a snap ring (332), the snap ring (332) is provided with a limiting groove (333), the limiting groove (333) on the snap ring (332) is clamped in the first bayonet (36), the guide sleeve (41) is provided with a rotation groove (42), the rotation groove (42) of the guide sleeve (41) is rotatably connected in the second bayonet (37); one end of the pull rope (34) passes through the guide sleeve (41) and the snap ring (332) in sequence, and a clamping ball (341) is provided at one end of the pull rope (34) passing through the snap ring (332), and the clamping ball (341) is pressed against the snap ring (332).

5. The recliner for a car seat back according to claim 4, characterized in that: A guide arc surface (43) is formed on the guide sleeve (41), and the pull rope (34) is laid on the guide arc surface (43).

6. The recliner for a car seat back according to claim 1, characterized in that: One end of the guide rail plate (1) is bent to form a first mounting plate (12), and the other end is mounted with a second mounting plate (13), and a reinforcing rib (121) is provided between the first mounting plate (12) and the guide rail plate (1), and the reinforcing rib (121) is connected to the guide rail plate (1).

7. The recliner for a car seat back according to claim 1, characterized in that: The sliding seat (21) is provided with a pin plate (26), a plurality of locking pins (31) pass through the pin plate (26), and the locking pins (31) are provided with a noise reduction ring (313), and the noise reduction ring (313) is sleeved on the locking pins (31).

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