A seat back adjustment mechanism and a seat

Abstract

This utility model relates to the field of automotive seat technology, specifically a seat back adjustment mechanism and seat, including a button assembly with a pressing end protruding from the armrest; an unlocking mechanism including an unlocking end and a driving end arranged opposite each other; a linkage assembly, the first end of which is fixedly connected to the connecting end of the button assembly, and the second end of which is fixedly connected to the driving end of the unlocking mechanism; and a gas spring assembly, the fixed end of which is connected to the unlocking end of the unlocking mechanism, and the rotating end of which can be rotatably connected to the seat back. Under the drive of the button assembly, the linkage assembly can pull the unlocking mechanism to rotate relative to the armrest, and the unlocking mechanism can drive the gas spring assembly to move along the axis of the gas spring assembly. Under the action of external force, the seat back can rotate relative to the armrest. This utility model can optimize the overall structural dimensions, improve the aesthetics of the seat, reduce the damage rate and maintenance cost of the button assembly, and improve the reliability of the seat back adjustment mechanism.

Description

Technical Field

[0001] This utility model relates to the field of automotive seat technology, and in particular to a seat back adjustment mechanism and a seat. Background Technology

[0002] In the adjustment mechanism of a car seat, the backrest unlocking device is a key component for adjusting the seat back angle. Traditional unlocking methods mostly use a handle-type mechanical unlocking mechanism, which typically includes mechanical components such as a handle, linkage, and latch. The user manually pulls the handle to move the linkage mechanism, thereby releasing the latch from the seat back and allowing the backrest angle to be adjusted.

[0003] Although this handle-type unlocking mechanism is simple in structure, low in cost, and can meet basic unlocking needs, it still has many technical defects in practical applications. Handle-type unlocking relies on physical pulling, which is inconvenient to operate in confined spaces (such as rear seats or compact vehicles), resulting in a poor user experience. The handle and linkage mechanism occupy a lot of space, which is not conducive to the lightweight and miniaturized design of the seat and affects the flexibility of the seat layout. After long-term use, mechanical parts are prone to wear, jamming, or breakage, leading to unlocking failure and affecting the stability of the seat function. Utility Model Content

[0004] To address the aforementioned technical issues, this invention utilizes a button assembly to quickly unlock the gas spring assembly, thereby enabling rapid adjustment of the seat back angle. Simultaneously, the button assembly, linkage assembly, unlocking mechanism, and gas spring assembly are all housed within the armrest, preventing the seat back adjustment mechanism from protruding from the seat. This optimizes the overall structural dimensions, enhances the aesthetics of the seat with the backrest adjustment mechanism, and provides high stability for backrest angle adjustment via the button assembly. This reduces the failure rate of the button assembly, lowers maintenance costs, and improves the reliability of the seat back adjustment mechanism.

[0005] This utility model provides a seat back adjustment mechanism, which is installed on a seat. The seat includes armrests and a seat back, and the seat back is rotatable relative to the armrests. The mechanism includes:

[0006] A button assembly includes a pressing end and a connecting end disposed opposite to each other, the pressing end protruding from the armrest and the connecting end disposed inside the armrest;

[0007] An unlocking mechanism fixedly installed within the handrail includes an unlocking end and a driving end disposed opposite to each other;

[0008] A linkage component, wherein a first end of the linkage component is fixedly connected to the connection end of the button component, and a second end of the linkage component is fixedly connected to the drive end of the unlocking mechanism, and the linkage component is capable of applying a pulling force to the unlocking mechanism;

[0009] A gas spring assembly includes a fixed end and a rotating end disposed opposite to each other. The fixed end of the gas spring assembly is connected to the unlocking end of the unlocking mechanism, and the rotating end of the gas spring assembly is rotatably connected to the seat back.

[0010] Driven by the button assembly, the linkage assembly can pull the unlocking mechanism to rotate relative to the armrest. The unlocking mechanism can drive the gas spring assembly to move along the axis of the gas spring assembly. Under the action of external force, the seat back can rotate relative to the armrest.

[0011] Furthermore, the unlocking mechanism includes a rotating component and a fixed shaft;

[0012] The fixed shaft is fixedly mounted on the handrail, the first end of the rotating component is fixedly connected to the second end of the linkage assembly, and the second end of the rotating component is rotatably connected to the fixed shaft.

[0013] Driven by the button assembly and the linkage assembly, the rotating component can rotate relative to the fixed axis.

[0014] Furthermore, the first end of the rotating member is the driving end, and the unlocking end is disposed between the first end of the rotating member and the second end of the rotating member;

[0015] The unlocking end is connected to the fixed end of the gas spring assembly.

[0016] Furthermore, it also includes an adapter that can be fixedly connected to the handrail, and a rotation space is formed between the adapter and the handrail;

[0017] The fixed shaft is fixedly mounted on the adapter, and the rotating component is able to rotate relative to the handrail within the rotation space.

[0018] Furthermore, a rotating part is provided at one end of the seat back, and a receiving space is provided at the rotating end of the gas spring assembly, the receiving space being able to accommodate part of the rotating part;

[0019] Either the rotating part or the accommodating space is provided with a rotating hole, and the other is provided with a rotating shaft that cooperates with the rotating hole.

[0020] Furthermore, the rotating end of the gas spring assembly includes a first connecting portion and a second connecting portion disposed opposite to each other, the first connecting portion and the second connecting portion forming the receiving space;

[0021] Both the first connecting part and the second connecting part are provided with the rotating hole, the rotating part can be disposed in the rotating hole, and the seat back can rotate relative to the gas spring assembly.

[0022] Furthermore, the first connecting portion and the second connecting portion form a U-shaped accommodating space.

[0023] Furthermore, the linkage component includes a pull cord, the two ends of which are fixedly connected to the drive end of the button component and the unlocking mechanism, respectively, and the pull cord is in a tensioned state.

[0024] Furthermore, the axial direction of the gas spring assembly is parallel to the direction from the front end to the rear end of the seat.

[0025] This utility model also protects a seat, including a seat back, armrests and a seat back adjustment mechanism as described above;

[0026] The seat back adjustment mechanism is located on the armrest, and the seat back is rotatably connected to the armrest through the seat back adjustment mechanism.

[0027] Implementing the embodiments of this utility model has the following beneficial effects:

[0028] This invention utilizes a combination of a button assembly, a linkage assembly, an unlocking mechanism, and a gas spring assembly. By controlling the button assembly, the linkage assembly and the unlocking mechanism are sequentially activated. The unlocking mechanism then moves the gas spring assembly along its axis, causing the seat back to rotate relative to the armrest. Pressing the button assembly quickly unlocks the gas spring assembly, thus enabling rapid adjustment of the seat back angle. Furthermore, all components—button assembly, linkage assembly, unlocking mechanism, and gas spring assembly—are housed within the armrest, preventing the seat back adjustment mechanism from protruding from the seat. This optimizes the overall structural dimensions, enhances the aesthetics of the seat with the backrest adjustment mechanism, and provides high stability for backrest angle adjustment via the button assembly. This reduces the failure rate of the button assembly, lowers maintenance costs, and improves the reliability of the seat back adjustment mechanism. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0030] Figure 1This is a structural diagram of the seat back adjustment mechanism and the armrest connected from the first angle in this embodiment;

[0031] Figure 2 This is a structural diagram of the seat back adjustment mechanism and the armrest connected from the second angle in this embodiment;

[0032] Figure 3 This is a structural diagram of the seat described in this embodiment.

[0033] The corresponding reference numerals in the figure are:

[0034] 1-Button assembly; 2-Linkage assembly; 3-Unlocking mechanism; 4-Gas spring assembly; 5-Seat backrest; 6-Armrest; 7-Adapter; 31-Rotating component; 32-Fixed shaft; 41-First connecting part; 42-Second connecting part; 51-Rotating part; 52-Rotating shaft. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0036] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the terms "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0038] See appendix Figures 1-3 This embodiment provides a seat backrest adjustment mechanism, installed on a seat including an armrest 6 and a seat backrest 5. The seat backrest 5 is rotatable relative to the armrest 6. The mechanism includes: a button assembly 1, comprising a pressing end and a connecting end disposed opposite to each other; the pressing end protrudes from the armrest 6, and the connecting end is disposed within the armrest 6; an unlocking mechanism 3 fixedly disposed within the armrest 6, comprising an unlocking end and a driving end disposed opposite to each other; a linkage assembly 2, the first end of which is fixedly connected to the connecting end of the button assembly 1, and the second end of which is fixedly connected to the driving end of the unlocking mechanism 3; the linkage assembly 2 being able to apply a pulling force to the unlocking mechanism 3; and a gas spring assembly 4, comprising a fixed end and a rotating end disposed opposite to each other; the fixed end of the gas spring assembly 4 is connected to the unlocking end of the unlocking mechanism 3, and the rotating end of the gas spring assembly 4 is rotatably connected to the seat backrest 5. Under the drive of the button assembly 1, the linkage assembly 2 can pull the unlocking mechanism 3 to rotate relative to the armrest 6, and the unlocking mechanism 3 can drive the gas spring assembly 4 to move along the axis of the gas spring assembly 4. Under its action, the seat back 5 can rotate relative to the armrest 6. This utility model, by setting up a button assembly 1, a linkage assembly 2, an unlocking mechanism 3, and a gas spring assembly 4 that cooperate with each other, achieves the following: by controlling the button assembly 1, the linkage assembly 2 and the unlocking mechanism 3 are driven in sequence. The unlocking mechanism 3 can drive the gas spring assembly 4 to move along the axis of the gas spring assembly 4, so that the seat back 5 rotates relative to the armrest 6. By pressing the button assembly 1, the gas spring assembly 4 can be quickly unlocked, and thus the angle of the seat back 5 can be quickly adjusted. At the same time, the button assembly 1, the linkage assembly 2, the unlocking mechanism 3, and the gas spring assembly 4 are all set inside the armrest 6, avoiding the structure of the seat back adjustment mechanism from protruding outside the seat, thereby optimizing the overall structural dimensions, improving the aesthetics of the seat with the seat back adjustment mechanism, and the adjustment of the seat back 5 angle through the button assembly 4 has high stability, which can reduce the damage rate of the button assembly 4 to a certain extent, reduce maintenance costs, and improve the reliability of the seat back adjustment mechanism.

[0039] In this embodiment, the connections of each component in the seat back adjustment mechanism are as follows: the pressing end of the button assembly 1 protrudes from the surface of the armrest 6, the connecting end of the button assembly 1 is located inside the armrest 6, and the connecting end of the button assembly 1 is fixedly connected to the first end of the linkage assembly 2. The second end of the linkage assembly 2 is fixedly connected to the first end of the rotating part 31 in the unlocking mechanism 3. The second end of the rotating part 31 in the unlocking mechanism 3 is rotatably connected to the fixed shaft 32, and the fixed shaft 32 is fixedly connected relative to the armrest 6. The unlocking end of the unlocking mechanism 3 is located between the first end and the second end of the rotating part 31. The unlocking end of the unlocking mechanism 3 abuts against the fixed end of the gas spring assembly 4, and the rotating end of the gas spring assembly 4 is rotatably connected to the seat back 5.

[0040] Understandably, the seat backrest 5 can rotate relative to the armrest 6 under the drive of the seat backrest adjustment mechanism. Specifically, when the operator presses the button assembly 1, the button assembly 1 drives the linkage assembly 2 to move. The linkage assembly 2 drives the rotating part 31 in the unlocking mechanism 3 to rotate relative to the fixed shaft 32. The rotating part 31 in the unlocking mechanism 3 drives the fixed end of the gas spring assembly 4 to move relative to the rotating end of the gas spring assembly 4 along the axis of the gas spring assembly 4. Under the action of external force, the seat backrest 5 rotates relative to the armrest 6 and the rotating end of the gas spring assembly 4 by the required angle.

[0041] In this embodiment, the button assembly 1 includes at least a button cap and a reset member. The handrail 6 is provided with a button hole, and the button cap is movably disposed in the button hole. The reset member is abutted and fixed to the button cap. When the button cap is in the initial state, the reset member is in the original state. When the button cap is in the pressed state, the reset member is in the compressed state. When the operator removes the external force applied to the button cap, the reset member drives the button cap to switch from the pressed state to the initial state, so as to realize the reset of the button cap relative to the handrail 6.

[0042] Specifically, the reset element is an elastic structure capable of compression and elongation, preferably a reset spring.

[0043] In this embodiment, the armrest 6 has an installation channel for the linkage component 2 inside its housing. By placing the linkage component 2 inside the housing of the armrest 6, the linkage component 2 can be prevented from protruding from the surface of the armrest 6, thereby improving the aesthetics of the seat back adjustment mechanism.

[0044] In this embodiment, the first end of the linkage component 2 is fixed to the connecting end of the button component. During the installation of the button component 1 by the operator, the connecting end of the button component 1 and the first end of the linkage component 2 are simultaneously placed inside the housing of the handrail 6. The second end of the linkage component 2 passes through the installation channel and is fixedly connected to the unlocking mechanism 3.

[0045] Specifically, the specific structure of the linkage component 2 is not limited, as long as the linkage component 2 can drive the unlocking mechanism 3 to switch between the unlocked state and the locked state under the drive of the button component 1. Preferably, the linkage component 2 is a pull rope structure.

[0046] In some possible embodiments, the linkage component 2 includes a pull rope and a tubular structure sleeved on the pull rope. The tubular structure is pre-installed in the installation channel, and the pull rope is disposed inside the tubular structure. By setting the tubular structure, interference between the pull rope and the internal structure of the handrail 6 can be avoided, which would affect the magnitude of the external force applied by the linkage component 2 to the unlocking mechanism 3, or prevent the pull rope from hooking onto the internal structure of the handrail 6, thus preventing the button component 1 from driving the unlocking mechanism 3 to perform unlocking or locking operations by pulling the rope. Setting the tubular structure can improve the stability and safety of the operation of the linkage component 2.

[0047] In some possible embodiments, the unlocking mechanism 3 includes a rotating component 31 and a fixed shaft 32; the fixed shaft 32 is fixedly mounted on the handrail 6, the first end of the rotating component 31 is fixedly connected to the second end of the linkage component 2, and the second end of the rotating component 31 is rotatably connected to the fixed shaft 32; under the drive of the button assembly 1 and the linkage component 2, the rotating component 31 can rotate relative to the fixed shaft 32. By setting the mutually cooperating rotating component 31 and fixed shaft 32, the installation stability and operation stability of the unlocking mechanism 3 can be guaranteed.

[0048] In this embodiment, the armrest 6 is located on one side of the seat back 5. Along the height direction of the seat, the armrest 6 is divided into an upper area and a lower area. The button assembly 1 is located in the upper area to facilitate operation by the operator. The unlocking mechanism 3 and the gas spring assembly 4 are located in the lower area to facilitate angle adjustment of the seat back 5. The first end of the linkage assembly 2 is located in the upper area, and the second end of the linkage assembly 2 is located in the lower area.

[0049] In this embodiment, the specific structure of the rotating member 31 is not limited, as long as the side wall of the rotating member 31 can abut against the fixed end of the gas spring assembly 4 when the rotating member 31 rotates to any angle. Preferably, the rotating member 31 is a rod-shaped structure, and the rotating member 31 can rotate relative to the fixed shaft 32 under the drive of the linkage assembly 2.

[0050] In this embodiment, the fixed shaft 32 is fixedly mounted on the adapter 7. The unlocking mechanism 3 also includes a limiting member, which is sleeved on the fixed shaft 32. The inner wall of the limiting member is provided with an internal thread, and the fixed shaft 32 is provided with an external thread that mates with the internal thread. The limiting member is threadedly connected to the fixed shaft 32. After the rotating member 31 is sleeved on the fixed shaft 32, the limiting member is sleeved on the fixed shaft 32 and rotated to a preset position to limit the rotating member 31, preventing the rotating member 31 from falling off the fixed shaft 32 and also preventing the rotating member 31 from moving on the fixed shaft 32. When the rotating member 31 rotates a certain distance relative to the axis of the fixed shaft 32, the rotating member 31 cannot abut against the gas spring assembly 4. It can be seen that by setting the limiting member, the rotating member 31 can also be guaranteed to abut against the fixed end of the gas spring assembly 4 in real time, thereby ensuring the stability of the seat backrest 5 angle adjustment.

[0051] In some possible embodiments, the first end of the rotating member 31 is the driving end, and the unlocking end is disposed between the first end and the second end of the rotating member 31. The unlocking end is connected to the fixed end of the gas spring assembly 4. By disposing the unlocking end between the first end and the second end of the rotating member 31, the operational stability of the gas spring assembly 4 can be ensured during the rotation of the rotating member 31 relative to the fixed shaft 32, thereby ensuring the stability of the seat back 5 relative to the armrest 6 in angle adjustment.

[0052] In some possible embodiments, a connector 7 is also included, which can be fixedly connected to the handrail 6, and a rotation space is formed between the connector 7 and the handrail 6; the fixed shaft 32 is fixedly mounted on the connector 7, and the rotating component 31 can rotate relative to the handrail 6 within the rotation space. By setting the connector 7, the installation stability of the rotating component 31 and the fixed shaft 32 can be ensured, and the rotation space formed can prevent the rotating component 31 from interfering with other structures during rotation, thus ensuring the stability of the rotating component 31 during operation.

[0053] In this embodiment, the specific structure of the adapter 7 is not limited, as long as a rotational space can be formed between the adapter 7 and the handrail 6.

[0054] Preferably, the adapter 7 is a plate-shaped structure, which is an L-shaped plate. The L-shaped plate includes a fixed part and a mounting part that are connected to each other. The mounting part is located away from the handrail 6, the fixed part is fixedly connected to the handrail 6, and one end of the fixed shaft 32 is mounted on the mounting part.

[0055] To ensure the installation stability of the fixed shaft 32, the thickness of the mounting part can be increased to increase the contact area between the mounting part and the fixed shaft 32, thereby ensuring the installation stability of the fixed shaft 32; alternatively, a fixing hole opposite to the mounting hole can be provided on the handrail 6, with both ends of the fixed shaft 32 respectively set in the mounting hole and the fixing hole, thereby increasing the installation stability of the fixed shaft 32.

[0056] In some possible embodiments, a rotating part 51 is provided at one end of the seat back 5, and a receiving space is provided at the rotating end of the gas spring assembly 4, which can accommodate part of the rotating part 51; either the rotating part 51 or the receiving space is provided with a rotating hole, and the other is provided with a rotating shaft 52 that cooperates with the rotating hole. By providing the mutually cooperating rotating part 51 and rotating hole, the stability of the connection between the seat back 5 and the armrest 6 can be ensured, and the smoothness of the rotation of the seat back 5 relative to the armrest 6 can be ensured.

[0057] In some possible embodiments, the rotating end of the gas spring assembly 4 includes a first connecting portion 41 and a second connecting portion 42 disposed opposite to each other, the first connecting portion 41 and the second connecting portion 42 forming a receiving space; both the first connecting portion 41 and the second connecting portion 42 are provided with rotating holes, the rotating portion 51 can be disposed in the rotating holes, and the seat back 5 can rotate relative to the gas spring assembly 4. By providing the first connecting portion 41 and the second connecting portion 42 and forming a receiving space between them, the stability of the connection with the seat back 5 can be improved.

[0058] In some possible embodiments, the first connecting part 41 and the second connecting part 42 form a U-shaped receiving space. By setting the receiving space to U-shape, it is ensured that both sides of the rotating part 51 are connected to the first connecting part 41 and the second connecting part 42 respectively, thus ensuring the connection stability between the rotating part 51 and the gas spring assembly 4.

[0059] In this embodiment, the size of the accommodating space is not limited, as long as the accommodating space can accommodate the rotating part 51 and the rotating part 51 can rotate relative to the accommodating space.

[0060] In some possible embodiments, the linkage component 2 includes a pull rope, the two ends of which are fixedly connected to the drive ends of the button component 1 and the unlocking mechanism 3, respectively. The pull rope is in a tensioned state. By setting the linkage component 2 as a pull rope, the structure of the linkage component 2 can be simplified, the size occupied by the linkage component 2 can be reduced, and the size can be optimized. At the same time, the manufacturing cost of the linkage component 2 can be reduced while ensuring the linkage effect of the button component 1 and the unlocking mechanism 3.

[0061] In this embodiment, the specific size of the pull cord is set according to the actual situation. When the button assembly 1 is in the initial state, the pull cord is in a tensioned state.

[0062] In some possible embodiments, the axial direction of the gas spring assembly 4 is arranged parallel to the direction from the front end to the rear end of the seat. This arrangement ensures that the angle of the seat back 6 can be efficiently adjusted during the reciprocating motion of the gas spring assembly 4.

[0063] The angle adjustment process of the seat backrest adjustment mechanism: The operator presses the button assembly 1, which drives the linkage assembly 2 to move. The linkage assembly 2 drives the rotating part 31 in the unlocking mechanism 3 to rotate relative to the fixed shaft 32. The rotating part 31 in the unlocking mechanism 3 drives the fixed end of the gas spring assembly 4 to move relative to the rotating end of the gas spring assembly 4 along the axis of the gas spring assembly 4. Under the action of external force, the seat backrest 5 rotates relative to the armrest 6 to the required angle. The operator releases the button assembly 1 and removes the external force. At this time, the gas spring assembly 4 is in the locked state, and the angle adjustment of the seat backrest 5 is completed.

[0064] This utility model also protects a seat, including a seat back 5, an armrest 6, and the aforementioned seat back adjustment mechanism; the seat back adjustment mechanism is disposed on the armrest 6, and the seat back 5 is rotatably connected to the armrest 6 through the seat back adjustment mechanism. The seat in this utility model includes the aforementioned seat back adjustment mechanism. By setting a button assembly 1, a linkage assembly 2, an unlocking mechanism 3, and a gas spring assembly 4 that cooperate with each other, the button assembly 1 can be controlled to sequentially drive the linkage assembly 2 and the unlocking mechanism 3. The unlocking mechanism 3 can drive the gas spring assembly 4 to move along the axis of the gas spring assembly 4, causing the seat back 5 to rotate relative to the armrest 6. Pressing button assembly 1 quickly unlocks gas spring assembly 4, allowing for rapid adjustment of the seat backrest angle 5. Simultaneously, button assembly 1, linkage assembly 2, unlocking mechanism 3, and gas spring assembly 4 are all housed within armrest 6, preventing the seat backrest adjustment mechanism from protruding from the seat. This optimizes the overall structural dimensions, enhances the aesthetics of the seat with the backrest adjustment mechanism, and provides high stability for adjusting the seat backrest angle via button assembly 4. This reduces the damage rate of button assembly 4, lowers maintenance costs, and improves the reliability of the seat backrest adjustment mechanism.

[0065] It is understood that the implementations shown in the accompanying drawings are merely preferred examples of this application. In actual products, the above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0066] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0067] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A seat backrest adjustment mechanism, disposed on a seat, the seat including an armrest (6) and a seat backrest (5), the seat backrest (5) being rotatable relative to the armrest (6), characterized in that, include: The button assembly (1) includes a pressing end and a connecting end disposed opposite to each other. The pressing end protrudes from the armrest (6), and the connecting end is disposed inside the armrest (6). The unlocking mechanism (3) is fixedly installed in the handrail (6), including an unlocking end and a driving end that are disposed opposite to each other; Linkage component (2), the first end of the linkage component (2) is fixedly connected to the connection end of the button component (1), the second end of the linkage component (2) is fixedly connected to the drive end of the unlocking mechanism (3), and the linkage component (2) can apply a pulling force to the unlocking mechanism (3); The gas spring assembly (4) includes a fixed end and a rotating end arranged opposite to each other. The fixed end of the gas spring assembly (4) is connected to the unlocking end of the unlocking mechanism (3), and the rotating end of the gas spring assembly (4) can be rotatably connected to the seat back (5). Driven by the button assembly (1), the linkage assembly (2) can pull the unlocking mechanism (3) to rotate relative to the armrest (6), and the unlocking mechanism (3) can drive the gas spring assembly (4) to move along the axis of the gas spring assembly (4); under the action of external force, the seat back (5) can rotate relative to the armrest (6).

2. The seat back adjustment mechanism according to claim 1, characterized in that, The unlocking mechanism (3) includes a rotating component (31) and a fixed shaft (32); The fixed shaft (32) is fixedly mounted on the handrail (6), the first end of the rotating component (31) is fixedly connected to the second end of the linkage assembly (2), and the second end of the rotating component (31) is rotatably connected to the fixed shaft (32); Driven by the button assembly (1) and the linkage assembly (2), the rotating component (31) can rotate relative to the fixed shaft (32).

3. The seat back adjustment mechanism according to claim 2, characterized in that, The first end of the rotating member (31) is the driving end, and the unlocking end is located between the first end of the rotating member (31) and the second end of the rotating member (31); The unlocking end is connected to the fixed end of the gas spring assembly (4).

4. The seat back adjustment mechanism according to claim 2, characterized in that, It also includes a connector (7), which can be fixedly connected to the handrail (6), and a rotation space is formed between the connector (7) and the handrail (6); The fixed shaft (32) is fixedly mounted on the adapter (7), and the rotating component (31) is able to rotate relative to the handrail (6) within the rotation space.

5. The seat back adjustment mechanism according to claim 1, characterized in that, One end of the seat back (5) is provided with a rotating part (51), and the rotating end of the gas spring assembly (4) is provided with a receiving space, which can accommodate part of the rotating part (51). The rotating part (51) and the accommodating space are provided with a rotating hole, and the other is provided with a rotating shaft (52) that cooperates with the rotating hole.

6. The seat back adjustment mechanism according to claim 5, characterized in that, The rotating end of the gas spring assembly (4) includes a first connecting part (41) and a second connecting part (42) disposed opposite to each other, and the first connecting part (41) and the second connecting part (42) form the receiving space; The first connecting part (41) and the second connecting part (42) are both provided with the rotating hole, the rotating part (51) can be disposed in the rotating hole, and the seat back (5) can rotate relative to the gas spring assembly (4).

7. The seat back adjustment mechanism according to claim 6, characterized in that, The first connecting part (41) and the second connecting part (42) form a U-shaped accommodating space.

8. The seat back adjustment mechanism according to any one of claims 1-7, characterized in that, The linkage component (2) includes a pull rope, the two ends of which are fixedly connected to the drive ends of the button component (1) and the unlocking mechanism (3), respectively, and the pull rope is in a tensioned state.

9. The seat back adjustment mechanism according to any one of claims 1-7, characterized in that, The axial direction of the gas spring assembly (4) is parallel to the direction from the front end to the rear end of the seat.

10. A type of seat, characterized in that, Includes a seat back (5), armrests (6), and a seat back adjustment mechanism as described in any one of claims 1-9; The seat back adjustment mechanism is mounted on the armrest (6), and the seat back (5) is rotatably connected to the armrest (6) through the seat back adjustment mechanism.

Images