Unlocking assembly for angle adjuster and seat

Abstract

The utility model provides an unlocking assembly for an angle adjuster and a seat. Wherein the unlocking assembly comprises a first connecting rod, the first connecting rod is provided with a first connecting part and a second connecting part, the first connecting part is used for being fixedly connected with a synchronous rod, and the synchronous rod is connected with an angle adjuster; the second connecting rod is provided with a third connecting part and a fourth connecting part; the third connecting rod is provided with a fifth connecting part used for being hinged to a seat cushion framework, a sixth connecting part connected with the fourth connecting part and an operation part providing unlocking operation; wherein the first connecting rod and the second connecting rod are rotatably connected through the hinging of the second connecting part and the third connecting part; and the second connecting rod and the third connecting rod are rotatably connected through the hinge joint of the fourth connecting part and the sixth connecting part.

Description

Technical Field

[0001] The present application relates to an unlocking assembly and a seat for a recliner. Background Art

[0002] In a seat, such as a car seat, a recliner is a device installed on the car seat to adjust the angle of the seat back.

[0003] In some solutions, the locking or unlocking of the device is controlled by a handle or a rod to adjust the angle of the car seat back.

[0004] However, in the existing handle unlocking assembly, due to the relatively simple motion structure, for example Figure 1 The structure of a handle 1001 and a rocker arm 1002 shown in the figure results in a larger size, heavier weight, and higher cost of the handle 1001, and also makes the unlocking operation inconvenient for the user.

[0005] Therefore, there is a need in the art for a new unlocking assembly and seat for a recliner, so as to facilitate the user to perform the unlocking operation. Utility Model Content

[0006] The purpose of the present application is to provide an unlocking assembly for a recliner.

[0007] Another object of the present application is to provide a seat.

[0008] According to the first aspect of the present application, an unlocking assembly includes a first connecting rod, having a first connecting portion for fixedly connecting to a synchronization rod, and a second connecting portion, wherein the synchronization rod is connected to a recliner; a second connecting rod, having a third connecting portion and a fourth connecting portion; a third connecting rod, having a fifth connecting portion for hingedly connecting to a seat cushion frame, a sixth connecting portion connected to the fourth connecting portion, and an operating portion for providing an unlocking operation; wherein the first connecting rod and the second connecting rod are rotatably connected by hinged connection between the second connecting portion and the third connecting portion; the second connecting rod and the third connecting rod are rotatably connected by hinged connection between the fourth connecting portion and the sixth connecting portion; the unlocking motion transmission path of the unlocking assembly is configured as follows: the operating force applied from the operating portion drives the third connecting rod to rotate around the position of the fifth connecting portion, the third connecting rod drives the second connecting rod to displace, and the second connecting rod drives the first connecting rod to rotate around the position of the first connecting portion, so as to drive the synchronization rod to rotate so as to unlock the recliner.

[0009] The technical solution of the present application forms an unlocking component of a hinged four-bar mechanism through the structure of a first connecting rod, a second connecting rod, and a third connecting rod. It is not only easy for the operator to operate, but also has good rigidity, so that the length and size of the third connecting rod serving as a handle can be smaller, thereby achieving lightweight unlocking components while ensuring structural strength.

[0010] In one or more embodiments of the unlocking assembly, it also includes: an elastic member, which is connected to the first connecting rod at one end and the second connecting rod at the other end. When the unlocking assembly is unlocked, the elastic member is deformed and accumulates elastic force. When the operating force is released, the accumulated elastic force is released, driving the first connecting rod, the second connecting rod, and the third connecting rod to return to their initial positions.

[0011] In one or more embodiments of the unlocking assembly, the first connecting portion includes a contoured hole corresponding to the synchronization rod, and the contoured hole is connected to the synchronization rod by interference fit; the first connecting portion also includes a claw structure, and the claw structure can be engaged and connected with the installation groove of the fixed connecting part of the adjuster.

[0012] In one or more embodiments of the unlocking assembly, the fifth connecting portion includes a fifth connecting hole, and the unlocking assembly also includes a stud, which is connected to the fifth connecting hole on one side and is used to connect to a fixing column of the seat cushion frame on the other side.

[0013] In one or more embodiments of the unlocking assembly, the third link also includes an extension portion, which extends from the sixth connecting portion toward the direction of the second link, and the extension portion includes a main body and a rib protruding vertically from the main body, including a first rib and a second rib, and when the second link is in an initial position relative to the third link, the second link abuts against the first rib, and when the second link is in a maximum rotation position relative to the third link, the second link abuts against the second rib.

[0014] In one or more embodiments of the unlocking assembly, the first connecting rod, the second connecting rod, and the third connecting rod are metal parts, the first rib and the second rib, and / or the abutment area of ​​the second connecting rod corresponding to the first rib and the second rib have a soft coating layer, and the connection structure between the second connecting part and the third connecting part, and between the fourth connecting part and the sixth connecting part has a wear-resistant bushing.

[0015] In one or more embodiments of the unlocking assembly, the first connecting rod has a first stop portion, and the second connecting rod has a second stop portion. When the unlocking assembly is in an initial position, the second connecting rod abuts against the first stop portion. When the second connecting rod is in a maximum rotation position relative to the third connecting rod, the third connecting rod abuts against the second stop portion.

[0016] In one or more embodiments of the unlocking assembly, the first connecting rod and the second connecting rod are both plastic parts.

[0017] In one or more embodiments of the unlocking assembly, the first connecting rod further has a third stopper and a fourth stopper, and the second connecting rod can be accommodated between the third stopper and the fourth stopper.

[0018] A seat according to the second aspect of the present application includes an unlocking assembly as described in the first aspect; a recliner; a seat cushion frame; and a backrest frame, wherein the recliner is connected to the seat cushion frame on one side and to the backrest frame on the other side; wherein the unlocking assembly is connected to the recliner via a synchronization rod, and unlocking of the unlocking assembly allows the backrest frame to rotate relative to the seat cushion frame.

[0019] The beneficial effects of the above embodiments include, but are not limited to, the use of the unlocking assembly introduced in the first aspect makes it easy for the user to adjust the seat back angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features, properties and advantages of the present application will become more apparent through the following description in conjunction with the accompanying drawings and embodiments. In the accompanying drawings, the same reference numerals always represent the same features. It should be noted that these drawings are only examples and are not drawn in proportion. They should not be used to limit the actual scope of protection claimed in the present application. Among them:

[0021] Figure 1 A schematic diagram of the structure of a comparison scheme.

[0022] Figure 2 Schematic diagram of the structure of the unlocking component of the first embodiment.

[0023] FIG. 3A to FIG. 3C It is a schematic structural diagram of some components of the unlocking assembly of the first embodiment.

[0024] FIG. 4A to FIG. 4C It is a schematic structural diagram of the unlocking assembly of the first embodiment in the initial position.

[0025] FIG. 5A to FIG. 5C It is a schematic structural diagram of the unlocking assembly of the first embodiment in the unlocking position.

[0026] Figure 6 This is a schematic structural diagram of the unlocking process of the second embodiment.

[0027] 7A to 7E It is a schematic structural diagram of some components of the unlocking assembly of the second embodiment.

[0028] FIG. 8A to FIG. 8C It is a schematic structural diagram of the unlocking component of the second embodiment in the initial position.

[0029] 9A to 9CIt is a schematic structural diagram of the unlocking assembly of the second embodiment in the unlocking position.

[0030] Fig.10 It is a schematic diagram of the rotation angle of the operating portion and the synchronization rod of the unlocking assembly of the second embodiment.

[0031] Fig.11 Schematic diagram of the first connecting rod and its connection structure with the angle adjuster.

[0032] Reference numerals:

[0033] 100-seats

[0034] 10- Unlock components

[0035] 1-First connecting rod

[0036] 11-First connecting part

[0037] 111-Profile hole

[0038] 112-claw structure

[0039] 12- Second connection part

[0040] 13-First gear

[0041] 2-Second connecting rod

[0042] 21- Third connection part

[0043] 22-Fourth connecting part

[0044] 23- Second gear

[0045] 3-Third connecting rod

[0046] 31-Fifth connecting part

[0047] 311-Fifth connecting hole

[0048] 312-Bushing

[0049] 32- Sixth connecting part

[0050] 33- Operation Department

[0051] 34-Extension

[0052] 341-Ontology

[0053] 3421-First sidewall

[0054] 3422-Second rib

[0055] 4-Elastic parts

[0056] 5-Stud

[0057] 20-Angle adjuster

[0058] 201-Fixed connector

[0059] 2011-Mounting slot

[0060] 21-Synchronous rod

[0061] 30-Seat Cushion Firmware

[0062] 40-Backrest frame. DETAILED DESCRIPTION

[0063] Reference will now be made in detail to the various embodiments of the application, the examples of which are shown in the accompanying drawings and are described below. Although the application will be described in conjunction with the exemplary embodiments, it should be appreciated that this specification is not intended to limit the application to those exemplary embodiments. On the contrary, the application is intended to not only cover these exemplary embodiments, but also to cover various alternative forms, modified forms, equivalent forms and other embodiments that may be included in the spirit and scope of the application defined by the appended claims.

[0064] In the following description, the orientation or positional relationship indicated by "front", "rear" or other orientation terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment" and / or "an embodiment" means a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0066] Although the unlocking assembly disclosed in the embodiment of the present application is suitable for car seats to achieve the effect of lightweight and easy unlocking operation, it is not limited to this. For example, it can be applicable to other application scenarios of transportation vehicles, such as heavy vehicles, railway trains, and ships. It can also be applicable to fixed places, such as conference halls, auditoriums, cinemas, etc. As long as the seat can achieve seat back angle adjustment through a recliner, the unlocking assembly disclosed in the embodiment of the present application can be applied.

[0067] refer to Figure 2 , Figure 4A , Figure 5A , Figure 6 , Fig. 8A as well as Fig. 9A As shown, in some embodiments, the seat 100 may include an unlocking assembly 10, a recliner 20, a cushion frame 30, and a backrest frame 40 as described below. As shown in the figure, the recliner 20 is connected to the cushion frame 30 on one side and to the backrest frame 40 on the other side. It can be understood that the seat 100 generally has a structural surface structure of a skin and a foam. In order to clearly show the internal structure of the seat in the figure, the skin and the foam are omitted, and only the frame of the seat is shown. The meaning of "recliner" is similar to the usual structure in the art, that is, a device installed on a car seat to adjust the angle of the seat back. The recliner adjusted by a handle is generally a step-adjustable recliner. The recliner 20 includes a core member, a movable connecting member, and a fixed connecting member 201. One side of the core member is connected to the movable connecting member, and the movable connecting member is connected to the backrest frame 40 to drive the backrest frame 40 to rotate. The other side is connected to the recliner fixed connecting member 201, and the fixed connecting member 201 is connected to the fixed member, and is relatively stationary with the cushion frame 30. The meaning of the core component of the recliner 20 is similar to the common understanding in the art, that is, the component in the recliner that can realize the locking and unlocking functions and adjust the angle. The core component generally includes a recliner movable disk and a recliner fixed disk. The recliner movable disk can be connected to a movable connecting member, and the recliner fixed disk can be connected to a fixed connecting member 201. The core component can be connected to different connecting members to form different recliners to be suitable for seats of different structures. In some embodiments, the fixed connecting member 201 of the recliner and the movable connecting member of the recliner are both plate-like structures, and the fixed connecting plate of the fixed connecting member 201 and the movable connecting member of the recliner are movable connecting plates of the recliner. The plate-like structure is easy to process and assemble, and the structure is stable and reliable. The unlocking assembly 10 is connected to the recliner 20 through a synchronization rod 50. The unlocking of the unlocking assembly 10 allows the backrest frame 40 to rotate relative to the cushion frame 30, thereby unlocking the recliner and realizing the angle adjustment of the seat back.

[0068] like Figure 1 As shown, Figure 4A , Fig. 8A As shown, the seat 100 is in an initial state, the space between the seat back and the seat cushion is provided for the occupant to sit, and Figure 5A , Fig. 9A In the unlocked state shown, the seat back (backrest frame 40) can be rotated relative to the seat cushion (cushion frame 30) to adjust the angle. The specific adjustment angle can be adjusted according to the needs of the user. For example, it can be adjusted forward so that when the front row is not occupied, the passengers in the back row can enjoy a better field of view or see the contents of electronic display screens such as the instrument panel screen clearly. It can also provide luggage placement space. For example, it can also be adjusted backward so that the passengers can sit more reclined or even lie down directly in double bed mode.

[0069] refer to Figures 2 to 5C The first embodiment shown, Figures 6 to 10 In the second embodiment shown, the unlocking assembly 10 for the recliner 20 includes a first connecting rod 1 , a second connecting rod 2 , and a third connecting rod 3 .

[0070] The first connecting rod 1 has a first connecting portion 11 and a second connecting portion 12 for fixedly connecting to the synchronization rod 50, and the synchronization rod 50 is connected to the angle adjuster 20. The specific structure of the first connecting portion 11 can be Fig.11 As shown, in some embodiments, the first connection portion 11 includes a contoured hole 111 corresponding to the synchronization rod 50, and the contoured hole 111 is connected to the synchronization rod 50 by interference fit. The meaning of the contoured hole is that its shape corresponds to the shape of the synchronization rod 50. For example, the cross section of the synchronization rod 50 in the figure is similar to a triangle, and the cross section of the contoured hole 111 is also a corresponding triangle. The first connection portion 11 also includes a claw structure 112, which can be engaged with the mounting groove 2011 of the fixed connection member 201 of the recliner, so that the reliability of the connection between the first connection portion 11 and the synchronization rod 50 can be ensured, the shaking of the unlocking assembly 10 during operation can be reduced, and the operating experience can be further improved.

[0071] The second connecting rod 2 has a third connecting portion 21 and a fourth connecting portion 22, which are connected to the first connecting rod 1 and the third connecting rod 3 respectively.

[0072] The third link 3 has a fifth connection portion 31 for articulating with the seat frame 30, a sixth connection portion 32 connected to the fourth connection portion 22, and an operating portion 33 for providing an unlocking operation. The operating portion 33 here is a component for the operator to manually operate, so the third link 3 can also be called a handle. Figure 2 , Figure 6 As shown, the specific structure of the fifth connection part 31 hinged with the seat frame 30 can be that, in some embodiments, the fifth connection part 31 includes a fifth connection hole 311, and the unlocking assembly 10 also includes a stud 5, the stud 5 is connected to the fifth connection hole 311 on one side, and the other side is used to fix the seat frame 30 to provide a hinge point, and the fixed connection position can be a fixed column of the seat frame 30, and the fixed column is provided with a step. Preferably, a bushing 312 (Bush) can be pressed and provided in the fifth connection hole 311, and is hinged with the fixed column of the seat frame. By using the stud 5, the welding process of the fixed column and the frame can be omitted to reduce the cost, but it is not limited to this. In addition, in some embodiments, the stud 5 is connected to the fifth connection hole 311 on one side, and is connected to the seat frame 30 and the backrest frame 40 at the same time on the other side, so that a bolt can be saved in the structure, simplifying the assembly and the number of parts.

[0073] The first connecting rod 1 and the second connecting rod 2 are rotatably connected through the hinge of the second connecting part 12 and the third connecting part 21, and the second connecting rod 2 and the third connecting rod 3 are rotatably connected through the hinge of the fourth connecting part 22 and the sixth connecting part 32. The above hinged structure can be connected by rivets, but it is not limited to this. For example, a boss can be integrated on one side of the second connecting part 12 and the third connecting part 21, and a matching hole can be provided on the other side, and the hinge is realized by the connection of the boss-matching hole.

[0074] Continuing with reference to the figure, the unlocking motion transmission path of the unlocking assembly 10 is configured as follows: the operating force applied from the operating part 33 drives the third connecting rod 3 to rotate around the position of the fifth connecting part 31, the third connecting rod 3 drives the second connecting rod 2 to move, and the second connecting rod 2 drives the first connecting rod 1 to rotate around the position of the first connecting part 11, which is used to drive the synchronization rod 50 to rotate to unlock the angle adjuster 20.

[0075] Continue to refer FIG. 4A to FIG. 4C , FIG. 5A to FIG. 5C ,as well as FIG. 8A to FIG. 8C , 9A to 9C ,as well as Fig.10 As shown, the unlocking motion transmission path of the unlocking assembly 10 is configured as follows: the operating force applied from the operating part 33 drives the third connecting rod 3 to rotate around the position of the fifth connecting part 31, the third connecting rod 3 drives the second connecting rod 2 to move, and the second connecting rod 2 drives the first connecting rod 1 to rotate around the position of the first connecting part 11, which is used to drive the synchronization rod 50 to rotate to unlock the angle adjuster 20.

[0076] The beneficial effect of this is that, through the structure of the first connecting rod, the second connecting rod and the third connecting rod, a hinge four-bar mechanism unlocking assembly is formed, which is not only easy for the operator to operate, but also has good rigidity, so that the length and size of the third connecting rod as a handle can be smaller, and the unlocking assembly can be lightweight on the basis of ensuring structural strength. FIG. 8A to FIG. 8C , 9A to 9C ,as well as Fig.10 As shown, the operating direction of the operating part 33 of the third connecting rod 3 of the unlocking assembly 10 is upward operation, and the rotation angle a of the third connecting rod 3 around the position of the fifth connecting part 31 specifically corresponds to the backrest adjustment angle β. The structural parameters of the connecting rod can be designed according to user needs to achieve different conversion coefficients from the rotation angle a to the backrest adjustment angle β.

[0077] Continue to refer Figures 2 to 10 As shown, in some embodiments, the unlocking assembly 10 may further include an elastic member 4, wherein the elastic member 4 is connected to the first connecting rod 1 at one end and to the second connecting rod 2 at the other end. FIG. 4A to FIG. 4C The initial position shown to FIG. 5A to FIG. 5CUnlocked position shown, FIG. 8A to FIG. 8C The initial position shown to 9A to 9C During the unlocking process shown, the elastic member 4 is deformed and accumulates elastic force. It can be understood that when the operating force is released, the accumulated elastic force is released, driving the first connecting rod 1, the second connecting rod 2, and the third connecting rod 3 to return to the initial position and re-lock. The structure of the elastic member 4 is generally a spring, and the solution of elastic force recovery is simple and easy to implement.

[0078] refer to Figures 2 to 5C As shown, in the first embodiment, the third connecting rod 1 further includes an extension portion 34, the extension portion 34 extends from the sixth connecting portion 32 toward the second connecting rod 2, the extension portion 34 includes a body 341 and a rib vertically protruding from the body 341, including a first rib 3421 and a second rib 3422, as shown in FIG. FIG. 4A to FIG. 4C As shown, when the second link 2 is in the initial position relative to the third link 3, the second link 2 abuts against the first retaining edge 3421, so that when the unlocking assembly is in the initial position, when the operating portion 33 is subjected to downward abuse force, the first retaining edge 3421 protects the internal parts of the recliner and prevents damage to the recliner. FIG. 5A to FIG. 5C As shown, when the second connecting rod 2 is at the maximum rotation position relative to the third connecting rod 3, the second connecting rod 2 abuts against the second retaining edge 3422. In this way, when the unlocking assembly is at the maximum operation position and the operating portion 33 continues to be subjected to an upward abuse force, the second retaining edge 3422 protects the internal parts of the recliner and prevents damage to the recliner.

[0079] In the first embodiment, the first connecting rod 1, the second connecting rod 2, and the third connecting rod 3 are metal parts, and the first rib 3421 and the second rib 3422, and / or the abutment area of ​​the second connecting rod 2 corresponding to the first rib 3421 and the second rib 3422 have a soft coating layer, for example, it can be a plastic-coated structure. In addition, the elastic member 4 has a connecting hole connected to the first connecting rod 1 at one end and the second connecting rod 2 at the other end, which can also be a plastic-coated structure, so as to prevent abnormal noise caused by direct friction contact between metals. In addition, the connecting structure between the second connecting part 12 and the third connecting part 21, and the fourth connecting part 22 and the sixth connecting part 32 has a wear-resistant bushing, for example, it can be a chrome-plated metal bushing structure, which improves the service life and also prevents abnormal noise.

[0080] In the first embodiment, the metal part has the beneficial effect that when the operating part 33 is subjected to a large operating abuse force, the internal parts of the backrest recliner can be well protected to avoid damage to the recliner and the safety problem of the backrest being unable to be locked. The structure of the metal part can withstand an abuse force of 566N without breaking.

[0081] refer to Figures 6 to 10 As shown, in the second embodiment, the first connecting rod 1 has a first stopper 13, and the second connecting rod 2 has a second stopper 23. FIG. 8A to FIG. 8C As shown, when the unlocking assembly 10 is in the initial position, the second connecting rod 2 abuts against the first stop 13, so that when the unlocking assembly is in the initial position, when the operating portion 33 is subjected to downward abuse force, the first stop 13 protects the internal parts of the recliner and prevents damage to the recliner. 9A to 9C As shown, when the second link 2 is at the maximum rotation position relative to the third link 3, the third link 2 abuts against the second stop 23. In this way, when the unlocking assembly is at the maximum operation position and the operating portion 33 continues to be subjected to an upward abuse force, the second stop 23 protects the internal parts of the recliner and prevents damage to the recliner.

[0082] In the second embodiment, the first connecting rod 1 and the second connecting rod 2 are both plastic parts. The beneficial effect of using plastic parts is that the weight of the unlocking assembly 10 of the second embodiment is about 290g, while the weight of the unlocking assembly 10 of the first embodiment is about 360g. Of course, the weight of the two is relatively Figure 1 The comparison schemes shown all have a lightweight effect. Figure 1 The weight of the unlocking assembly of the solution shown is about 400g. However, compared with the first embodiment, the strength of the second embodiment is slightly inferior to that of the first embodiment, and the abuse force it can withstand is 495N. Therefore, different materials can be selected according to actual needs, such as abuse force, weight and other factors. In addition, it can be understood that the materials of the plastic parts and metal parts introduced above can all be well-known materials, for example, the plastic parts can be engineering plastics, and the metal parts can be aluminum alloys. This application does not involve improvements to the materials of the plastic parts and metal parts themselves.

[0083] refer to Fig.7D as well as Fig. 7E As shown, in the second embodiment, the first connecting rod 1 has a third stopper 15 and a fourth stopper 16, and the second connecting rod 2 can be accommodated between the third stopper 15 and the fourth stopper 16, that is, the third stopper 15 and the fourth stopper 16 can clamp the second connecting rod 2 in the middle, thereby forming a motion guide and reducing the shaking clearance of the unlocking component during operation.

[0084] In summary, the beneficial effects of the unlocking assembly and the seat introduced in the above embodiments include but are not limited to: an unlocking assembly of a hinged four-bar mechanism is formed through the structure of the first connecting rod, the second connecting rod, and the third connecting rod, which is not only easy for the operator to operate, but also has good rigidity, so that the length and size of the third connecting rod serving as the handle can be smaller, so that the unlocking assembly can be lightweight while ensuring the structural strength, and the user can easily adjust the seat back angle.

[0085] Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application, and any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, any modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application shall fall within the scope of protection defined by the claims of the present application.

Claims

1. An unlocking assembly (10) for a recliner (20), characterized in that: include: A first connecting rod (1) having a first connecting portion (11) and a second connecting portion (12) for fixedly connecting to a synchronization rod (50), wherein the synchronization rod (50) is connected to a recliner (20); The second connecting rod (2) has a third connecting portion (21) and a fourth connecting portion (22); A third connecting rod (3) having a fifth connecting portion (31) for being hinged to the seat cushion frame (30), a sixth connecting portion (32) connected to the fourth connecting portion (22), and an operating portion (33) for providing an unlocking operation; The first connecting rod (1) and the second connecting rod (2) are hingedly connected by the second connecting portion (12) and the third connecting portion (21) so that the first connecting rod (1) and the second connecting rod (2) are rotatably connected; the second connecting rod (2) and the third connecting rod (3) are hingedly connected by the fourth connecting portion (22) and the sixth connecting portion (32) so that the second connecting rod (2) and the third connecting rod (3) are rotatably connected; The unlocking motion transmission path of the unlocking assembly (10) is configured as follows: the operating force applied from the operating part (33) drives the third connecting rod (3) to rotate around the position of the fifth connecting part (31), the third connecting rod (3) drives the second connecting rod (2) to move, and the second connecting rod (2) drives the first connecting rod (1) to rotate around the position of the first connecting part (11), which is used to drive the synchronization rod (50) to rotate so as to unlock the recliner (20).

2. The unlocking assembly (10) according to claim 1, characterized in that: Also includes: An elastic member (4), wherein one end of the elastic member (4) is connected to the first connecting rod (1) and the other end is connected to the second connecting rod (2). When the unlocking assembly (10) is unlocked, the elastic member (4) is deformed to accumulate elastic force. When the operating force is released, the accumulated elastic force is released to drive the first connecting rod (1), the second connecting rod (2) and the third connecting rod (3) to return to their initial positions.

3. The unlocking assembly (10) according to claim 1, characterized in that: The first connecting portion (11) comprises a contoured hole (111) corresponding to the synchronization rod (50), and the contoured hole (111) is connected to the synchronization rod (50) by interference fit; the first connecting portion (11) also comprises a claw structure (112), and the claw structure (112) can be engaged and connected with a mounting groove (2011) of a fixed connecting member (201) of the angle adjuster.

4. The unlocking assembly (10) according to claim 1, characterized in that: The fifth connecting portion (31) includes a fifth connecting hole (311), and the unlocking assembly (10) further includes a stud (5), wherein the stud (5) is connected to the fifth connecting hole (311) on one side, and is used to connect the seat cushion frame (30) on the other side for fixed connection to provide a hinge point; alternatively, the stud (5) is connected to both the seat cushion frame (30) and the backrest frame (40) on the other side.

5. The unlocking assembly (10) according to claim 1, characterized in that: The third connecting rod (3) also includes an extension portion (34), which extends from the sixth connecting portion (32) toward the second connecting rod (2). The extension portion (34) includes a main body (341) and a rib protruding vertically from the main body (341), including a first rib (3421) and a second rib (3422). When the second connecting rod (2) is located at an initial position relative to the third connecting rod (3), the second connecting rod (2) abuts against the first rib (3421). When the second connecting rod (2) is located at a maximum rotation position relative to the third connecting rod (3), the second connecting rod (2) abuts against the second rib (3422).

6. The unlocking assembly (10) according to claim 5, characterized in that: The first connecting rod (1), the second connecting rod (2), and the third connecting rod (3) are metal parts; the first rib (3421) and the second rib (3422), and / or the abutment area of ​​the second connecting rod (2) corresponding to the first rib (3421) and the second rib (3422) have a soft coating layer; the connection structure between the second connecting part (12) and the third connecting part (21), and the connection structure between the fourth connecting part (22) and the sixth connecting part (32) have wear-resistant bushings.

7. The unlocking assembly (10) according to claim 1, characterized in that: The first connecting rod (1) has a first stopper (13), and the second connecting rod (2) has a second stopper (23); when the unlocking assembly (10) is located at an initial position, the second connecting rod (2) abuts against the first stopper (13); when the second connecting rod (2) is located at a maximum rotation position relative to the third connecting rod (3), the third connecting rod (3) abuts against the second stopper (23).

8. The unlocking assembly (10) according to claim 7, characterized in that: The first connecting rod (1) and the second connecting rod (2) are both plastic parts.

9. The unlocking assembly (10) according to claim 7, characterized in that: The first connecting rod (1) also has a third stopper (15) and a fourth stopper (16), and the second connecting rod (2) can be accommodated between the third stopper (15) and the fourth stopper (16).

10. A seat (100), characterized in that: include: The unlocking assembly (10) according to any one of claims 1 to 8; Angle adjuster (20); Cushion frame (30); A backrest frame (40), wherein the angle adjuster (20) is connected to the seat cushion frame (30) on one side and to the backrest frame (40) on the other side; The unlocking assembly (10) is connected to the angle adjuster (20) via a synchronization rod (50), and unlocking of the unlocking assembly (10) enables the backrest frame (40) to rotate relative to the seat cushion frame (30).

Images