Locking mechanism for seat and seat

Abstract

The utility model discloses a locking mechanism for a seat and the seat, the locking mechanism is used for locking and unlocking a first component and a second component on the seat, and the locking mechanism comprises a driving piece and a locking module assembled into a whole, the locking module comprises a fixing base capable of being fixed relative to the first component, a locking piece movably arranged on the fixing base, a limiting piece arranged on the fixing base and an elastic piece arranged between the fixing base and the locking piece, and the locking piece can be locked with and unlocked from the second component at the first position and the second position respectively. The driving part is provided with a pressure applying part and an operation part, the pressure applying part is configured to be capable of being driven by the operation part to act and apply pressure to the locking part, the driving part is used for being matched with the elastic part to drive the locking part to be switched between the first position and the second position, and the limiting part is used for limiting the driving part when the locking part is located at the first position. By applying the locking mechanism, the assembling operation difficulty of the locking mechanism can be reduced, and then the after-sales maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a locking mechanism for seats and the seat. Background Art

[0002] In order to improve comfort, many seats are designed with headrests, lumbar supports, armrests and other components. For ease of use, the above-mentioned headrests, lumbar supports and other components can be adjusted relative to the seat body. In order to achieve the above adjustment, a locking mechanism will be installed between the seat body and each component, and the locking mechanism will be used to lock the adjusted components relative to the seat body. The locking mechanism in the related art is usually a scattered component assembled with the seat body or the above-mentioned components by screws, and the disassembly and assembly operations are relatively complicated. As a joint control structure that is used frequently and continuously stressed, the locking mechanism is more prone to damage than the seat body. The use of the above-mentioned locking mechanism is not only complicated to operate during the first assembly, but also has a high cost for after-sales replacement and maintenance. Utility Model Content

[0003] The utility model aims to provide a locking mechanism for a seat and a seat, which can realize the rapid disassembly and assembly of the locking mechanism and reduce the after-sales maintenance cost.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A locking mechanism for a seat, used to lock and unlock a first component and a second component on the seat, the locking mechanism comprising a driving member and a locking module assembled in one body, the locking module comprising:

[0006] a fixing seat, which is configured to be assembled with the first component to be fixed relative to the first component;

[0007] a locking member, which is movably disposed on the fixing seat and has a first position and a second position relative to the fixing seat, wherein the locking member can be locked with the second member when located at the first position, and can be unlocked with the second member when located at the second position;

[0008] an elastic member, which is disposed between the fixing seat and the locking member; and

[0009] A limiting member, which is arranged on the fixing seat;

[0010] Among them, the driving member has a pressure-applying part and an operating part for a user to operate, the pressure-applying part is configured to be driven by the operating part to move and apply pressure to the locking member, the driving member is used to cooperate with the elastic member to drive the locking member to switch between a first position and a second position, and the limiting member is configured to limit the driving member when the locking member is in the first position.

[0011] Preferably, the fixing seat is formed with a slideway, the locking member is slidably disposed in the slideway, the locking member has a locking protrusion, and the locking protrusion is configured to be able to be inserted into and removed from the slot on the second component.

[0012] Preferably, the fixing seat includes a substrate formed with a through hole and a baffle plate located on the substrate and arranged around the through hole, the baffle plate cooperates with the through hole to form the slideway, and the baffle plate is provided with an avoidance gap for avoiding the driving member.

[0013] Preferably, the locking member comprises a base block adapted to the through hole and mounting plates arranged on both sides of the base block, the mounting plates are gap-matched with the inner wall of the baffle, and the elastic member is arranged between the mounting plates and the base plate.

[0014] Preferably, an abutment portion is formed on a side of the base block away from the locking protrusion, the driving member presses against the abutment portion when the locking member is in the first position, and the limiting member presses against the abutment portion when the locking member is in the second position.

[0015] Preferably, the limiting member has a latching tooth located on the action range of the pressure-applying portion, and the latching tooth is located on the side of the pressure-applying portion away from the locking portion when the locking portion is in the first position, and the latching tooth is located between the pressure-applying portion and the locking portion when the locking portion is in the second position, and the latching tooth is configured to be able to move relative to the fixed seat to avoid the movement of the pressure-applying portion.

[0016] Preferably, the position-limiting member comprises a fixing block fixedly arranged on the fixing seat, and the fixing block is formed with the locking teeth having elastic deformation capability;

[0017] Alternatively, the limiting member includes a slider slidably disposed on the fixed seat and an elastic reset member disposed between the slider and the fixed seat, the slider is formed with the latch tooth, and the elastic reset member applies pressure to the slider to cause the latch tooth to move toward the action stroke of the pressure-applying part.

[0018] Preferably, the driving member is rod-shaped, the two ends of the driving member respectively form the pressure portion and the operating portion, and the driving member is swingably arranged around a set axis relative to a fixed seat, and the set axis is located between the operating portion and the pressure portion.

[0019] Preferably, the elastic member applies pressure to the locking member so that the locking member has a tendency to move toward the second position.

[0020] In addition, to achieve the above purpose, the utility model also adopts the following technical solutions:

[0021] A seat comprises a seat body and functional components arranged on the seat body, wherein the functional components comprise a base and / or a headrest and / or a lumbar support, and a locking mechanism as described in any one of the above technical solutions is arranged between the functional components and the seat body.

[0022] Compared with the prior art, the beneficial effect of the utility model is that by setting a fixed seat, a locking member, an elastic member, a limiting member and a driving member, the driving member and the elastic member cooperate to drive the locking member to switch between the first position and the second position relative to the fixed seat, thereby enabling the locking member to be locked or unlocked relative to the second member. Among them, the fixed seat, the locking member, the elastic member and the limiting member can be pre-assembled into a locking module. Therefore, when assembling the locking mechanism, it is only necessary to assemble the driving member and the locking module as a whole to the seat, and it is not necessary to install each individual component to the seat one by one by screws. In this way, the difficulty of assembly operation can be reduced, the assembly efficiency can be improved, and the cost of after-sales maintenance can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A structural schematic diagram of a locking mechanism for a seat provided in an embodiment of the present application, wherein the locking member is located at a first position;

[0024] Figure 2 for Figure 1 A structural schematic diagram of the locking mechanism from another perspective;

[0025] Figure 3 is a cross-sectional view of the locking mechanism when the locking member is located at a first position;

[0026] Figure 4 is a structural schematic diagram of the locking mechanism when the locking member is located at the second position;

[0027] Figure 5 is a cross-sectional view of the locking mechanism when the locking member is located at the second position;

[0028] Figure 6 is a structural schematic diagram of the locking module when the locking member is located at the second position;

[0029] Figure 7 The exploded view of the locking module;

[0030] Figure 8 It is an exploded view of a fixing seat in a locking mechanism and a limiting member in another embodiment.

[0031] Among them, 1. driving member; 10. pressure-applying part; 11. operating part; 2. fixing seat; 20. base plate; 200. through hole; 201. positioning groove; 21. baffle; 3. locking member; 30. base block; 300. abutting part; 301. pressing part; 31. mounting plate; 310. positioning column; 32. locking protrusion; 4. elastic member; 5. limiting member; 50. latching tooth; 51. fixing block; 510. latching block; 511. pressure plate; 52. slider; 53. elastic reset member. DETAILED DESCRIPTION

[0032] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] This embodiment provides a locking mechanism for a seat, which can be used to lock and unlock a first component and a second component on the seat. Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in , the locking mechanism includes a driving member 1 and a locking module assembled in one body, wherein the locking module includes a fixing seat 2, a locking member 3, an elastic member 4 and a limiting member 5. The fixing seat 2 is configured to be assembled with a first component to be fixed relative to the first component, and the locking member 3 is movably arranged on the fixing seat 2 and has a first position and a second position relative to the fixing seat 2. Specifically, the locking member 3 can be locked with the second component when it is located at the first position, and can be unlocked with the second component when it is located at the second position. The elastic member 4 is arranged between the fixing seat 2 and the locking member 3, and the limiting member 5 is arranged on the fixing seat 2. The driving member 1 has a pressure-applying part 10 and an operating part 11 for the user to operate. The pressure-applying part 10 is configured to be driven by the operating part 11 and to apply pressure to the locking member 3. The driving member 1 is used to cooperate with the elastic member 4 to drive the locking member 3 to switch between the first position and the second position, and the limiting member 5 is configured to be able to limit the driving member 1 when the locking member 3 is located at the first position.

[0036] When the locking mechanism is applied, the locking module can be assembled as a whole with the first component on the seat, thereby avoiding the need to assemble each component separately with the components on the seat as in the related art, reducing the difficulty of the assembly operation and reducing the cost of after-sales maintenance. The driving member 1 and the elastic member 4 cooperate to drive the locking member 3 to switch between the first position and the second position relative to the fixing seat 2, thereby enabling the locking member 3 to be locked or unlocked relative to the second component. When the locking member 3 is locked with the second component, the first component and the second component can be locked by the locking mechanism; when the locking member 3 is unlocked with the second component, the first component and the second component are unlocked and can move relative to each other, which is convenient for the user to adjust the position.

[0037] The locking mechanism can be applied to a seat, which includes a seat body, a functional component arranged on the seat body, and the locking mechanism. Specifically, the functional component can be one or more of a base, a headrest, and a lumbar support, and the locking mechanism is arranged between the functional component and the seat body. For example, a locking mechanism is arranged between the headrest and the seat body (backrest), a groove capable of installing a locking module is arranged on the seat body, the locking module is placed in the groove, and the driving member 1 is movably installed on the seat body, and the movable stroke of the driving member 1 is limited by a limiting structure arranged on the seat body. When the position of the headrest relative to the seat body needs to be adjusted, the user drives the locking member 3 to move through the driving member 1, so that the locking member 3 is switched from the first position to the second position, the headrest and the seat body are unlocked, and the position of the headrest relative to the seat body can be moved and adjusted. After the headrest moves to a suitable position, the locking member 3 is driven by the driving member 1 to move, so that the locking member 3 is switched from the second position to the first position, and the headrest and the seat body are locked. Similarly, a locking mechanism may be provided between the base and the seat body, and between the waist support and the seat body for performing locking and unlocking operations as described above.

[0038] Combination Figure 2 , Figure 6 and Figure 7 As shown in , the fixing seat 2 in this embodiment is formed with a slideway, and the locking member 3 is slidably arranged in the slideway. The locking member 3 has a locking protrusion 32, and the locking protrusion 32 is configured to be able to be inserted into and removed from the slot on the second component. Specifically, the fixing seat 2 includes a base plate 20 formed with a through hole 200 and a baffle 21 located on the base plate 20 and arranged around the through hole 200. The baffle 21 cooperates with the through hole 200 to form a slideway, and the baffle 21 is provided with an avoidance gap for avoiding the driving member 1. Further, the locking member 3 includes a base block 30 adapted to the through hole 200 and a mounting plate 31 arranged on both sides of the base block 30. The mounting plate 31 is clearance-matched with the inner wall of the baffle 21, and the elastic member 4 is arranged between the mounting plate 31 and the base plate 20.

[0039] Through the above design, the base block 30 in the locking member 3 can slide along the through hole 200, and the base block 30 is adapted to the through hole 200, that is, the base block 30 and the inner wall of the through hole 200 are clearance-matched, and the mounting plate 31 and the inner wall of the baffle 21 are also clearance-matched. This design enables the slideway to have the function of limiting the sliding path of the locking member 3.

[0040] The driving member 1 in this embodiment is in the shape of a rod, and the two ends of the driving member 1 respectively form a pressure portion 10 and an operating portion 11, and the driving member 1 is swingably arranged relative to the fixing seat 2 around a set axis, and the set axis is located between the operating portion 11 and the pressure portion 10. In this way, when the user presses the operating portion 11, the pressure portion 10 can be driven to swing, and then the pressure portion 10 can cooperate with the elastic member 4 to drive the locking member 3 to switch between the first position and the second position.

[0041] The driving member in this embodiment is designed to swing relative to the fixed seat, and the locking member is designed to slide in a straight line relative to the fixed seat. In other optional implementations, the driving member can also be designed to move in a straight line relative to the fixed seat, or the locking member can also be designed to swing relative to the fixed seat.

[0042] It is easy to understand that the locking member 3 is provided with a point for interacting with the pressure-applying portion 10. Specifically, the base block 30 in this embodiment is formed with an abutting portion 300 on the side away from the locking protrusion 32, and the driving member 1 is pressed against the abutting portion 300 when the locking member 3 is in the first position. In addition, the elastic member 4 in this embodiment applies pressure to the locking member 3 so that the locking member 3 has a tendency to move to the second position. Specifically, the elastic member 4 in this embodiment is a compression spring. Regardless of whether the locking member 3 is in the first position or the second position, the elastic member 4 is always in a compressed state, that is, the elastic member 4 applies pressure to the locking member 3 so that the locking member 3 has a tendency to move to the second position. In this way, when the locking member 3 is in the first position, the driving member 1 is limited by the limiting member 5, and the pressure-applying portion 10 on the driving member 1 is kept pressed against the abutting portion 300 of the locking member 3, so that the locking member 3 can overcome the elastic force of the elastic member 4 and remain in the first position.

[0043] In order to maintain the stability of the elastic member 4, in this embodiment, a positioning column 310 is provided on the mounting plate 31, a positioning groove 201 is provided on the base plate 20, one end of the elastic member 4 is sleeved outside the positioning column 310, and the other end of the elastic member 4 is placed in the positioning groove 201. It is easy to understand that in other optional embodiments, the elastic member 4 can also be selected from metal springs and other components.

[0044] The limiting member 5 in this embodiment has a latching tooth 50 located on the action stroke of the pressure-applying portion 10, and the latching tooth 50 is located on the side of the pressure-applying portion 10 away from the locking member 3 when the locking member 3 is in the first position, and the latching tooth 50 is located between the pressure-applying portion 10 and the locking member 3 when the locking member 3 is in the second position, and the latching tooth 50 is configured to be able to move relative to the fixing seat 2 to avoid the movement of the pressure-applying portion 10. That is, when the locking member 3 is in the first position, the pressure-applying portion 10 on the driving member 1 is located between the latching tooth 50 and the abutting portion 300 on the locking member 3 (such as Figure 3 When the locking member 3 needs to be switched from the first position to the second position, the user needs to apply pressure to the operating portion 11 to drive the pressure portion 10 to swing to the top of the latching tooth 50 (as shown in FIG. Figure 5 In this process, the latching teeth 50 can move relative to the fixing seat 2 to avoid the swinging movement of the pressure applying portion 10 .

[0045] like Figure 6 and Figure 7As shown in , specifically in this embodiment, the limiting member 5 includes a fixed block 51 fixedly arranged on the fixed seat 2, and a latch 50 with elastic deformation ability is formed on the fixed block 51. That is, in this embodiment, the latch 50 itself can avoid the swinging action of the pressure-applying part 10 by deformation caused by the elastic deformation ability. The fixed block 51 in this embodiment includes a latch block 510 and a pressure plate 511. A connecting column is provided on the fixed seat 2, and a threaded hole is opened on the connecting column. The latch block 510 is fixedly pressed on the fixed seat 2 through the pressure plate 511, and the pressure plate 511 is fastened to the connecting column by screw threads. It is easy to understand that the latch block 510 and the pressure plate 511 can also be fixed as a whole. As shown in FIG. Figure 3 and Figure 5 As shown in FIG. 1 , in order to facilitate the interaction between the pressure-applying portion 10 and the latching tooth 50, the two are provided with mutually matching guide curved surfaces, so that

[0046] In other optional implementations, other structures of the limiting member 5 may be used to achieve the desired function. Figure 8 As shown in , in other embodiments, the position-limiting member 5 may include a slider 52 slidably disposed on the fixing seat 2 and an elastic reset member 53 disposed between the slider 52 and the fixing seat 2, the slider 52 is formed with a latch 50, and the elastic reset member 53 applies pressure to the slider 52 in such a manner that the latch 50 moves toward the action stroke of the pressure-applying portion 10. In this way, during the swinging process of the driving member 1, the slider 52 may slide by applying pressure to the latch 50 to overcome the elastic force of the elastic reset member 53, thereby achieving the function of avoiding the pressure-applying portion 10.

[0047] As mentioned above, the limiting member 5 is configured to limit the driving member 1 when the locking member 3 is located at the first position (eg Figure 3 In this embodiment, the limiting member 5 is further configured to limit the locking member 3 when the locking member 3 is located at the second position (as shown in FIG. Figure 5 Of course, in an optional embodiment, when the locking member 3 is located at the second position, the locking member 3 may be provided with a Figure 5 The pressing portion 301 shown in the figure is pressed by the driving member 1 to limit the locking member 3 .

[0048] During assembly, first place one end of the elastic member 4 in the positioning groove 201 provided on the base plate 20 in the fixing seat 2, then align the base block 30 of the locking member 3 with the through hole 200 and insert it, and make the positioning column 310 on the mounting plate 31 extend into the elastic member 4, and then fix the fixing plate to the fixing seat 2 by screws to complete the assembly of the locking module. In this state, the locking member 3 is kept in the second position under the pressure of the elastic member 4 and the latch 50. Then install the driving member 1 and the locking module to the relevant positions on the seat.

[0049] When used for the first time, the locking member 3 is in the second position (eg Figure 5 As shown in FIG, the user applies pressure to the operating portion 11 of the driving member 1 to make the driving member 1 swing counterclockwise. Under the action of the pressure portion 10, the latch 50 is deformed to avoid the pressure portion 10. The pressure portion 10 continues to swing and presses against the abutment portion 300 on the locking member 3. The locking member 3 is pressed and slides along the slideway relative to the fixing seat 2 until the locking member 3 slides to the first position (as shown in FIG. Figure 3 ). When the locking member 3 is in the first position, the pressure portion 10 is separated from the latching tooth 50, and the latching tooth 50 returns to its original position under its own deformation and presses against the pressure portion 10, thereby limiting the driving member 1 and realizing the locking operation. The process of the unlocking operation is the same as that of the locking operation, and only reverse pressure is required on the operating portion 11, which will not be described here.

[0050] The driving member 1, the fixing seat 2, the locking member 3 and the limiting member 5 in this embodiment are all plastic parts, wherein the fixing seat 2 and the locking member 3 are both made of hard plastic material, preferably POM wear-resistant hard plastic material. The latching teeth 50 on the limiting member 5 are plastic parts with elastic deformation ability. In other optional embodiments, the driving member 1, the fixing seat 2, the locking member 3 and the limiting member 5 can also be selected from other materials such as metal according to the load-bearing requirements of the use scenario.

[0051] Finally, it should be noted that the above-mentioned implementation modes are only optional embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A locking mechanism for a seat, used to lock and unlock a first component and a second component on the seat, characterized in that: The locking mechanism comprises a driving member (1) and a locking module assembled in one body, wherein the locking module comprises: A fixing seat (2) configured to be assembled with the first component to be fixed relative to the first component; a locking member (3) movably arranged on the fixing seat (2) and having a first position and a second position relative to the fixing seat (2); the locking member (3) being able to lock with the second member when located at the first position, and being able to unlock with the second member when located at the second position; an elastic member (4) disposed between the fixing seat (2) and the locking member (3); and A limiting member (5) disposed on the fixing seat (2); The driving member (1) comprises a pressure-applying portion (10) and an operating portion (11) for operation by a user, wherein the pressure-applying portion (10) is configured to be driven by the operating portion (11) to move and apply pressure to the locking member (3), the driving member (1) is used to cooperate with the elastic member (4) to drive the locking member (3) to switch between a first position and a second position, and the limiting member (5) is configured to limit the driving member (1) when the locking member (3) is located at the first position.

2. The locking mechanism according to claim 1, characterized in that: The fixing seat (2) is formed with a slideway, the locking member (3) is slidably arranged in the slideway, the locking member (3) has a locking protrusion (32), and the locking protrusion (32) is configured to be able to be inserted into and removed from the slot on the second component.

3. The locking mechanism according to claim 2, characterized in that: The fixing seat (2) comprises a base plate (20) formed with a through hole (200) and a baffle (21) located on the base plate (20) and arranged around the through hole (200), the baffle (21) cooperates with the through hole (200) to form the slideway, and the baffle (21) is provided with an avoidance notch for avoiding the driving member (1).

4. The locking mechanism according to claim 3, characterized in that: The locking member (3) comprises a base block (30) adapted to the through hole (200) and mounting plates (31) arranged on both sides of the base block (30), the mounting plates (31) being clearance-matched with the inner wall of the baffle (21), and the elastic member (4) being arranged between the mounting plates (31) and the base plate (20).

5. The locking mechanism according to claim 4, characterized in that: A contact portion (300) is formed on a side of the base block (30) facing away from the locking protrusion (32); the driving member (1) is pressed against the contact portion (300) when the locking member is in the first position; and the limiting member (5) is pressed against the contact portion (300) when the locking member is in the second position.

6. The locking mechanism according to any one of claims 1 to 5, characterized in that: The limiting member (5) has a latching tooth (50) located on the action stroke of the pressure-applying portion (10), and the latching tooth (50) is located on a side of the pressure-applying portion (10) away from the locking member (3) when the locking member (3) is in the first position, and the latching tooth (50) is located between the pressure-applying portion (10) and the locking member (3) when the locking member (3) is in the second position, and the latching tooth (50) is configured to be able to move relative to the fixed seat (2) to avoid the movement of the pressure-applying portion (10).

7. The locking mechanism according to claim 6, characterized in that: The limiting member (5) comprises a fixing block (51) fixedly arranged on the fixing seat (2), and the fixing block (51) is formed with the latching teeth (50) having elastic deformation capability; Alternatively, the limiting member (5) comprises a slider (52) slidably arranged on the fixing seat (2) and an elastic reset member (53) arranged between the slider (52) and the fixing seat (2), the slider (52) being formed with the latching tooth (50), and the elastic reset member (53) applying pressure to the slider (52) in such a manner that the latching tooth (50) moves toward the action stroke of the pressure-applying portion (10).

8. The locking mechanism according to any one of claims 1 to 5, characterized in that: The driving member (1) is rod-shaped, and the two ends of the driving member (1) respectively form the pressure-applying portion (10) and the operating portion (11), and the driving member (1) is swingably arranged around a set axis relative to a fixed seat (2), and the set axis is located between the operating portion (11) and the pressure-applying portion (10).

9. The locking mechanism according to any one of claims 1 to 5, characterized in that: The elastic member (4) applies pressure to the locking member (3) so that the locking member (3) has a tendency to move toward the second position.

10. A chair, comprising a seat body and functional components arranged on the seat body, wherein the functional components include a base and / or a headrest and / or a lumbar support, characterized in that: A locking mechanism as claimed in any one of claims 1 to 9 is arranged between the functional component and the seat body.

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