Seat back frame adjustable support structure

Abstract

This utility model relates to the field of seat manufacturing technology and discloses an adjustable support structure for a seat back frame, including a base body. A spring body is disposed on the inner wall of the base body, and a rotating toothed block is disposed on the outer wall of the spring body. A housing is slidably connected to the outer wall of the rotating toothed block. A limiting toothed block is fixedly connected to the inner wall of the housing. A rotating rod is slidably connected to the inner wall of the limiting toothed block. A knob is fixedly connected to the outer wall of the rotating rod. A rotating plate is fixedly connected to the outer wall of the knob. A support plate is slidably connected to the outer wall of the rotating plate. A cushion is slidably connected to the front outer wall of the support plate. A seating component is disposed on the inner wall of the support plate. In this utility model, pressing the rotating plate moves the knob, causing the rotating toothed block to move. The base body compresses the spring body. Releasing the rotating plate causes the spring body to push the rotating toothed block back to engage with the limiting toothed block. This component can adjust the angle of the support plate to meet the needs of different users.

Description

Technical Field

[0001] This utility model relates to the field of seat manufacturing technology, and in particular to an adjustable support structure for seat back frames. Background Technology

[0002] The seat back frame is the supporting structure of the seat back, usually made of materials such as metal or plastic. It is mainly used to provide support for the human body, ensure safety, and fix components. Using an adjustable support structure for the seat back frame can improve comfort, enhance safety, meet diverse needs, and improve product competitiveness. However, traditional adjustable support structures for seat back frames have limited adjustment range, poor stability, poor operation convenience, insufficient comfort, and durability issues. To meet the needs of modern seat adjustment, a new type of adjustable support structure for seat back frames is used.

[0003] The existing adjustment structure cannot guarantee the stability of the support plate angle after adjustment. It is easily changed by the user's movements or external forces, and cannot meet the user's need to maintain a comfortable angle for a long time. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an adjustable support structure for the seat back frame, which aims to improve the problem that the existing adjustment structure is difficult to guarantee the stability of the support plate angle after adjustment, and is easily changed by the user's movements or external forces, thus failing to meet the user's need to maintain a comfortable angle for a long time.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The adjustable support structure of the seat back frame includes a base body, a spring body on the inner wall of the base body, a rotating toothed block on the outer wall of the spring body, a housing rotatably connected to the outer wall of the rotating toothed block, a limiting toothed block fixedly connected to the inner wall of the housing, the tooth ends of the rotating toothed block meshing with the tooth ends of the limiting toothed block, a rotating rod slidably connected to the inner wall of the limiting toothed block, the outer wall of the rotating rod fixedly connected to the inner wall of the rotating toothed block, a knob fixedly connected to the outer wall of the rotating rod, a rotating plate fixedly connected to the outer wall of the knob, a support plate slidably connected to the outer wall of the rotating plate, a cushion slidably connected to the front outer wall of the support plate, and a seating component on the inner wall of the support plate.

[0007] Preferably, the seating component includes an armrest, the outer wall of which is rotatably connected to the inner wall of a support plate, a fixed rod is rotatably connected to the inner wall of the armrest, a seat cushion is fixedly connected to the outer wall of the fixed rod, a support base is fixedly connected to the lower surface of the seat cushion, and a lifting component is provided on the outer wall of the seat cushion.

[0008] Preferably, the lifting assembly includes a support block, the inner wall of which is rotatably connected to the outer wall of the seat cushion, and a protective cover is fixedly connected to the inner wall of the support block, with a spring rod provided on the inner wall of the protective cover.

[0009] Preferably, the front outer wall of the bearing block is fixedly connected with a locking tooth, and the outer wall of the locking tooth is slidably connected with a slider body.

[0010] Preferably, a fixing block is fixedly connected to the inner wall of the slider body, and a reset spring is provided on the right outer wall of the fixing block.

[0011] Preferably, the outer wall of the reset spring is provided with a reset plate, and the outer wall of the fixing block is provided with a limit rod, which is slidably connected to the inner wall of the reset plate.

[0012] Preferably, the rear outer wall of the reset plate is provided with a locking block, the outer wall of the locking block is slidably connected to the inner wall of the locking teeth, the outer wall of the reset plate is slidably connected to the inner wall of the slider body, the front outer wall of the slider body is fixedly connected to a lifting slider, the outer wall of the lifting slider is slidably connected to the inner wall of the support plate, and the front outer wall of the lifting slider is fixedly connected to the rear outer wall of the cushion.

[0013] Preferably, the outer wall of the lifting slider is slidably connected to a limiting shell, the rear outer wall of the limiting shell is fixedly connected to the front outer wall of the bearing block, and the inner wall of the limiting shell is slidably connected to the outer wall of the reset plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, pressing the rotating plate inward drives the knob to move the rotating tooth block. The rotating tooth block and the base body compress the spring body. By cooperating with the armrest, the backrest is adjusted. Releasing the rotating plate causes the spring body to push the rotating tooth block back to engage with the limiting tooth block. This component can achieve the effect of adjusting the angle of the support plate to meet the needs of different users.

[0016] 2. In this utility model, pressing the reset plate causes the locking block to leave the inner wall of the locking tooth, and at the same time compressing the limit rod set by the reset spring can make the reset plate slide more smoothly. The reset plate causes the slider body to slide on the outer wall of the locking tooth, so that the lifting slider drives the backrest to slide. When the designated position is reached, the reset plate is released, and the reset spring pushes the reset plate back to its original position, while the locking block is locked on the inner wall of the locking tooth. This component can adjust the height of the backrest and is suitable for different people. Attached Figure Description

[0017] Figure 1 This is a perspective view of the adjustable support structure of the seat back frame proposed in this utility model.

[0018] Figure 2This is a partial structural diagram of the outer shell of the adjustable support structure for the seat back frame proposed in this utility model.

[0019] Figure 3 This is a partial structural diagram of the cushion of the adjustable support structure for the seat back frame proposed in this utility model.

[0020] Figure 4 This is a partial structural diagram of the support base of the adjustable support structure for the seat back frame proposed in this utility model.

[0021] Figure 5 This is a partial structural diagram of the lifting slider of the adjustable support structure for the seat back frame proposed in this utility model.

[0022] Legend:

[0023] 1. Base body; 11. Spring body; 12. Rotating gear block; 13. Outer shell; 14. Limiting gear block; 15. Rotating rod; 16. Torque; 17. Rotating plate; 18. Support plate; 19. Cushion; 2. Armrest; 21. Fixing rod; 22. Seat cushion; 23. Support base; 3. Bearing block; 31. Protective cover; 32. Spring rod; 33. Clamping tooth; 34. Slider body; 35. Fixing block; 36. Return spring; 37. Return plate; 38. Lifting slider; 39. Limiting shell. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1-3 An embodiment of this utility model provides an adjustable support structure for a seat back frame, including a base body 1. A spring body 11 is provided on the inner wall of the base body 1. A rotating tooth block 12 is provided on the outer wall of the spring body 11. A housing 13 is rotatably connected to the outer wall of the rotating tooth block 12. A limiting tooth block 14 is fixedly connected to the inner wall of the housing 13. The tooth end of the rotating tooth block 12 is meshed with the tooth end of the limiting tooth block 14. A rotating rod 15 is slidably connected to the inner wall of the limiting tooth block 14. The outer wall of the rotating rod 15 is fixedly connected to the inner wall of the rotating tooth block 12. A knob 16 is fixedly connected to the outer wall of the rotating rod 15. A rotating plate 17 is fixedly connected to the outer wall of the knob 16. A support plate 18 is slidably connected to the outer wall of the rotating plate 17. A cushion 19 is slidably connected to the front outer wall of the support plate 18. A seating component is provided on the inner wall of the support plate 18.

[0026] Specifically, pressing the rotating plate 17 moves the knob 16, causing the rotating rod 15 to slide the rotating tooth block 12 against the inner wall of the outer shell 13, separating it from the limiting tooth block 14. Under the action of the base body 1 and the rotating tooth block 12, the spring body 11 is compressed. This, in conjunction with the armrest 2, causes the support plate 18 to tilt backward, simultaneously tilting the cushion 19. Releasing the rotating plate 17 causes the spring body 11 to rebound, pushing the rotating tooth block 12 to engage with the limiting tooth block 14. This assembly can adjust the angle of the support plate 18 to meet the needs of different users.

[0027] Reference Figure 1 and Figure 4 The seating component includes an armrest 2, the outer wall of which is rotatably connected to the inner wall of the support plate 18, a fixed rod 21 is rotatably connected to the inner wall of the armrest 2, a seat cushion 22 is fixedly connected to the outer wall of the fixed rod 21, a support base 23 is fixedly connected to the lower surface of the seat cushion 22, and a lifting component is provided on the outer wall of the seat cushion 22.

[0028] Specifically, the armrest 2 is not only used to place the arm, but also can be pushed to cooperate with the angle adjustment component and the fixing rod 21 to achieve the effect of adjusting the angle. The seat cushion 22 and the support base 23 can support a person sitting on it.

[0029] Reference Figure 5 The lifting assembly includes a support block 3, the inner wall of which is rotatably connected to the outer wall of the seat cushion 22. A protective cover 31 is fixedly connected to the inner wall of the support block 3, and a spring rod 32 is provided on the inner wall of the protective cover 31. A locking tooth 33 is fixedly connected to the front outer wall of the support block 3, and a slider body 34 is slidably connected to the outer wall of the locking tooth 33. A fixing block 35 is fixedly connected to the inner wall of the slider body 34, and a return spring 36 is provided on the right outer wall of the fixing block 35. A return plate 37 is provided on the outer wall of the return spring 36, and a limit rod is provided on the outer wall of the fixing block 35. The limit rod is slidably connected to the inner wall of the return plate 37. A locking block is provided on the rear outer wall of the reset plate 37. The outer wall of the locking block is slidably connected to the inner wall of the locking tooth 33. The outer wall of the reset plate 37 is slidably connected to the inner wall of the slider body 34. A lifting slider 38 is fixedly connected to the front outer wall of the slider body 34. The outer wall of the lifting slider 38 is slidably connected to the inner wall of the support plate 18. The front outer wall of the lifting slider 38 is fixedly connected to the rear outer wall of the cushion 19. A limiting shell 39 is slidably connected to the outer wall of the lifting slider 38. The rear outer wall of the limiting shell 39 is fixedly connected to the front outer wall of the bearing block 3. The inner wall of the limiting shell 39 is slidably connected to the outer wall of the reset plate 37.

[0030] Specifically, pressing the reset plate 37 causes the locking block to disengage from the inner wall of the locking tooth 33. At the same time, the fixed block 35 on the inner wall of the slider body 34 compresses the reset spring 36. The limiting rod on the outer wall of the fixed block 35 enables the reset plate 37 to slide more smoothly. Pushing the slider body 34 causes the lifting slider 38 to slide on the outer wall of the limiting shell 39 and the support plate 18, which can adjust the backrest 19. The protective cover 31 and the spring rod 32 can prevent excessive angle adjustment, which could cause the bearing block 3 to break. This component can adjust the height of the backrest, making it suitable for different people.

[0031] Working principle: When this structure is needed, pressing the reset plate 37 causes the locking block to move away from the inner wall of the locking tooth 33, while simultaneously compressing the reset spring 36 in conjunction with the fixing block 35. The set limit rod can make the reset plate 37 slide more smoothly. Moving the reset plate 37 causes the slider body 34 to move, so that the lifting slider 38 slides on the inner wall of the limit shell 39 and the support plate 18, which can achieve the effect of adjusting the height of the backrest 19. At the same time, the set protective cover 31 and spring rod 32 can prevent the bearing block 3 from breaking when the seat is over-reclined during angle adjustment. This component can adjust the height of the backrest, which is suitable for different people. Pressing the rotating plate 17 causes the knob 16 to move, which rotates the rod. The movement of the rotating rod 15 causes the rotating tooth block 12 to separate from the limiting tooth block 14. At the same time, the base body 1 compresses the spring body 11. At this time, by pushing the armrest 2 and the fixing rod 21 backward, the support plate 18 can be folded down, and the backrest 19 can be folded down at the same time. This component can adjust the angle of the support plate 18 to meet the needs of different users. This structure not only solves the problem that the adjustment structure in the prior art is difficult to guarantee the stability of the angle of the support plate 18 after adjustment, and is easily changed by the user's movement or external force, and cannot meet the user's need to maintain a comfortable angle for a long time, but also solves the problem that the chair back cannot be adjusted in height to meet the needs of different people.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable support structure for a seat back frame, comprising a base body (1), characterized in that: The inner wall of the base body (1) is provided with a spring body (11), the outer wall of the spring body (11) is provided with a rotating tooth block (12), the outer wall of the rotating tooth block (12) is rotatably connected to a shell (13), the inner wall of the shell (13) is fixedly connected to a limiting tooth block (14), the tooth end of the rotating tooth block (12) is meshed with the tooth end of the limiting tooth block (14), the inner wall of the limiting tooth block (14) is slidably connected to a rotating rod (15), the outer wall of the rotating rod (15) is fixedly connected to the inner wall of the rotating tooth block (12), the outer wall of the rotating rod (15) is fixedly connected to a knob (16), the outer wall of the knob (16) is fixedly connected to a rotating plate (17), the outer wall of the rotating plate (17) is slidably connected to a support plate (18), the front outer wall of the support plate (18) is slidably connected to a cushion (19), and the inner wall of the support plate (18) is provided with a seating component.

2. The adjustable support structure for the seat back frame according to claim 1, characterized in that: The seating component includes an armrest (2), the outer wall of which is rotatably connected to the inner wall of a support plate (18), a fixing rod (21) is rotatably connected to the inner wall of the armrest (2), a seat cushion (22) is fixedly connected to the outer wall of the fixing rod (21), a support base (23) is fixedly connected to the lower surface of the seat cushion (22), and a lifting component is provided on the outer wall of the seat cushion (22).

3. The adjustable support structure for the seat back frame according to claim 2, characterized in that: The lifting assembly includes a support block (3), the inner wall of which is rotatably connected to the outer wall of the seat cushion (22), and a protective cover (31) is fixedly connected to the inner wall of the support block (3). A spring rod (32) is provided on the inner wall of the protective cover (31).

4. The adjustable support structure for the seat back frame according to claim 3, characterized in that: The front outer wall of the bearing block (3) is fixedly connected with a locking tooth (33), and the outer wall of the locking tooth (33) is slidably connected with a slider body (34).

5. The adjustable support structure for the seat back frame according to claim 4, characterized in that: A fixing block (35) is fixedly connected to the inner wall of the slider body (34), and a return spring (36) is provided on the right outer wall of the fixing block (35).

6. The adjustable support structure for the seat back frame according to claim 5, characterized in that: The outer wall of the reset spring (36) is provided with a reset plate (37), and the outer wall of the fixing block (35) is provided with a limit rod, which is slidably connected to the inner wall of the reset plate (37).

7. The adjustable support structure for the seat back frame according to claim 6, characterized in that: The rear outer wall of the reset plate (37) is provided with a locking block, the outer wall of the locking block is slidably connected to the inner wall of the locking tooth (33), the outer wall of the reset plate (37) is slidably connected to the inner wall of the slider body (34), the front outer wall of the slider body (34) is fixedly connected to a lifting slider (38), the outer wall of the lifting slider (38) is slidably connected to the inner wall of the support plate (18), and the front outer wall of the lifting slider (38) is fixedly connected to the rear outer wall of the cushion (19).

8. The adjustable support structure for the seat back frame according to claim 7, characterized in that: The outer wall of the lifting slider (38) is slidably connected to the limiting shell (39), the rear outer wall of the limiting shell (39) is fixedly connected to the front outer wall of the bearing block (3), and the inner wall of the limiting shell (39) is slidably connected to the outer wall of the reset plate (37).

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