A seat and its slide rail unlocking mechanism

Abstract

The present invention discloses a seat and a slide rail unlocking mechanism thereof, wherein the unlocking cam of the unlocking mechanism is pivotally connected to a support seat, and a driving component provides a rotational driving force; the unlocking pin is inserted into the top body of the inner rail, and the upper end thereof forms a cam pair with the working surface of the unlocking cam to drive the lower end thereof to reciprocate and switch between the unlocking working position and the locking working position; the lock body is placed in the inner cavity of the inner rail, and the upper surface thereof abuts against the lower end of the unlocking pin, and one side of the lock body has a lock card formed by horizontal extension, and the lock card is adapted to a lock groove provided on the side walls of the inner rail and the outer rail; and the configuration is as follows: when switching from the locking working position to the unlocking working position, the lock card is displaced in the inner rail lock groove and the outer rail lock groove to be separated from the outer rail lock groove; when switching from the unlocking working position to the locking working position, the lock card is displaced in the inner rail lock groove to be placed in both the inner rail lock groove and the outer rail lock groove. The present invention can automatically realize the unlocking operation of the long slide rail of the seat, has good operability, and occupies less space.

Description

Technical Field

[0001] The invention relates to the technical field of seat slide rail control, and in particular to a seat and a slide rail unlocking mechanism thereof. Background Art

[0002] At present, the slide rails of passenger seats are mostly unlocked and locked by manual drive, and the slide rails are unlocked by turning the handle to drive the lock card to rotate out of the locking groove. Due to its own structural limitations, the unlocking operation force and operation stroke will affect the comfort and ease of operation, and require a larger operating space; especially for the long slide rails of the rear seats of the car, the above defects are more obvious.

[0003] In view of this, it is urgent to optimize the design of the existing seat slide rail unlocking mechanism so as to provide passengers with a more convenient and comfortable experience while achieving good operability and reducing the space occupied by the product. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a seat and a slide rail unlocking mechanism thereof, which can automatically realize the unlocking operation of the long slide rail of the seat, has good operability, and occupies less space.

[0005] The seat slide rail unlocking mechanism provided by the present invention is used for matching inner rails and outer rails, and includes a driving component, an unlocking assembly and a support seat fixedly arranged on the upper surface of the inner rail; the unlocking assembly includes an unlocking cam, an unlocking pin and a lock body; wherein the unlocking cam is pivotally connected to the support seat and is provided with a rotational driving force by the driving component; the unlocking pin is inserted into the top body of the inner rail, and its upper end forms a cam pair with the working surface of the unlocking cam to drive its lower end to reciprocate and switch between the unlocking working position and the locking working position; the lock body, The lock body comprises a locking card which is arranged in the inner cavity of the inner rail, and the locking card is adapted to be fitted into the locking grooves provided on the side walls of the inner rail and the outer rail when the locking working position is switched to the unlocking working position, and the locking card is displaced in the inner rail locking groove and the outer rail locking groove to be out of the outer rail locking groove when the locking working position is switched to the unlocking working position, and the locking card is displaced in the inner rail locking groove to be placed in both the inner rail locking groove and the outer rail locking groove when the locking working position is switched to the locking working position.

[0006] Preferably, the unlocking component also includes: an elastic member, which is arranged between the lock body and the inner rail and is configured as follows: when switching to the unlocking working position, the elastic member generates deformation reserve deformation energy after the lock body is displaced; when switching to the locking working position, the elastic member releases the deformation energy to provide a resetting force for the lock body.

[0007] Preferably, the elastic member is a spring wire which is passed through the main body of the lock body, and a slot adapted for the spring wire is provided on the side wall of the inner rail.

[0008] Preferably, a cam groove for forming the working surface is formed on the unlocking cam, and the unlocking pin is located beside the unlocking cam, and is provided with a follower pin extending horizontally and adapted to be in the cam groove.

[0009] Preferably, a penetration hole is formed at the upper end of the unlocking pin, and the follower pin is formed by a threaded fastener that is penetrated through the penetration hole and the cam groove.

[0010] Preferably, a guide sleeve is nested between the top body of the inner rail and the unlocking pin.

[0011] Preferably, the lower part of the outer circumferential surface of the guide sleeve is retracted inward to form a limiting step, and the lower part of the guide sleeve is inserted into the top body of the inner rail; and the lower end of the unlocking pin has a radially outwardly extending limiting portion, and the limiting portion forms a vertical limit with the lower end of the guide sleeve and / or the top body of the inner rail.

[0012] Preferably, the unlocking assembly and the supporting seat are two pieces respectively arranged corresponding to the two slide rails, an unlocking connecting rod is arranged between the unlocking cams of the two unlocking assemblies, and the output end of the driving component is transmission-connected with the unlocking connecting rod.

[0013] Preferably, the unlocking cams of the two unlocking assemblies are respectively located on the outside of the support seat and are respectively fixed to the two ends of the unlocking connecting rod; the unlocking connecting rod has a shaft neck adapted to the axial hole of the support seat to construct a pivot connection between the unlocking cam and the support seat.

[0014] The present invention also provides a seat, comprising a seat body slidably matched with a vehicle body or a base through a slide rail, and also comprising the seat slide rail unlocking mechanism as described above.

[0015] In view of the existing seat slide rail unlocking mechanism, the present invention innovatively proposes an optimization scheme, using the driving component as the power source to achieve automatic control. Specifically, a matching unlocking cam and unlocking pin are used to convert and output the force switching between the unlocking working position and the locking working position; based on the synchronous action of the unlocking pin and the lock body, the slide rail is unlocked through the lock card on the lock body and the lock grooves respectively opened on the side walls of the inner rail and the outer rail, thereby controlling the unlocking and locking of the slide rail. Compared with the prior art, this scheme can achieve one-button unlocking and locking, which can greatly improve the passenger experience; the matching design of the driving component, the unlocking cam and the unlocking pin is adopted, which has the characteristics of compact structure and small space occupation; in addition, the application of this scheme can meet the specific setting position of the driving component by configuring different cams, and has better versatility.

[0016] In a preferred embodiment of the present invention, an elastic member is arranged between the lock body and the inner rail to provide a reset force for the lock body; the specific configuration is: when switching to the unlocking working position, the elastic member can generate deformation reserve deformation energy after the lock body is displaced; when switching to the locking working position, the elastic member can release the deformation energy to provide a reset force for the lock body, thereby further ensuring that the slide rail quickly resets to the locked state.

[0017] In another preferred embodiment of the present invention, threaded fasteners are used to form follower pins that match the cam grooves. This can achieve good assembly processability while, on the one hand, effectively controlling product manufacturing costs; on the other hand, it can fully utilize the space of the structure itself to a certain extent, thereby maximizing control of the assembly space occupied by the product.

[0018] In another preferred embodiment of the present invention, an unlocking link is used to realize synchronous unlocking and locking of two unlocking components, thereby being suitable for a seat provided with two slide rails and having the characteristics of simple and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly relationship of the seat slide rail unlocking mechanism in a specific implementation manner;

[0020] Figure 2 for Figure 1 The schematic diagram of the seat slide rail unlocking mechanism shown is shown with the outer rail removed;

[0021] Figure 3 It is a schematic diagram of the overall structure of the unlocking component described in the specific implementation method;

[0022] Figure 4 for Figure 3 A side view of the unlocking mechanism shown in;

[0023] Figure 5 It is a cross-sectional view of the unlocking assembly in a specific implementation manner formed along the longitudinal direction of the slide rail;

[0024] Figure 6 The assembly relationship between the lock card 33 and the inner rail lock slot 111 is shown;

[0025] Figure 7 The cross section of the slide rail shows the assembly relationship of the components.

[0026] In the figure:

[0027] Slide rail 10, inner rail 11, inner rail locking groove 111, card slot 112, outer rail 12, outer rail locking groove 121, drive component 20, unlocking assembly 30, unlocking cam 31, cam groove 311, unlocking pin 32, insertion hole 321, limiting portion 322, lock body 33, lock card 331, spring wire 34, threaded fastener 35, guide sleeve 36, small diameter section 361, support seat 40, unlocking connecting rod 50. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Without loss of generality, this embodiment uses the seat slide rail unlocking mechanism shown in the figure to explain in detail its driving and transmission principles. It should be understood that the specific dimensional parameters such as the driving components and intermediate transmission components therein do not constitute substantial limitations to the technical solution sought to be protected in this application.

[0030] Please refer to Figure 1 and Figure 2 ,in, Figure 1 : is a schematic diagram of the assembly relationship of the seat slide rail unlocking mechanism described in this embodiment, Figure 2 for Figure 1 The schematic diagram of the seat slide rail unlocking mechanism after removing the outer rail is shown in the figure. As shown in the figure, the seat slide rail unlocking mechanism is used for the slide rail 10 with the matching inner rail 11 and outer rail 12, including a driving component 20, an unlocking assembly 30 and a support seat 40 fixedly arranged on the upper surface of the inner rail 11; here, the inner rail 11 and the outer rail 12 are defined based on the structural covering relationship of the two relative displacement bodies of the slide rail 10. From the perspective of the assembly relationship, the inner rail 11 is used to connect with the seat body (not shown in the figure), and the outer rail 12 is used to connect with the vehicle body or the base (not shown in the figure).

[0031] Specifically, the unlocking assembly 30 is mainly composed of an unlocking cam 31, an unlocking pin 32 and a lock body 33. Figure 3 and Figure 4 ,in, Figure 3 is a schematic diagram of the overall structure of the unlocking component 30, Figure 4 for Figure 3 Side view of the unlocking mechanism shown in .

[0032] The unlocking cam 31 is pivotally connected to the support base 40, and the driving component 20 provides a rotational driving force to drive the unlocking pin 32 to move back and forth. The unlocking cam 31 can be directly or indirectly pivotally connected to the support base 40.

[0033] Among them, the unlocking pin 32 is inserted into the top body of the inner rail 11, and its upper end forms a cam pair with the working surface of the unlocking cam 32 to drive its lower end to move back and forth and switch between the unlocking working position and the locking working position; it should be understood that the "unlocking working position" and "locking working position" refer to the working positions that ensure the relative unlocking and locking positions of the inner rail 11 and the outer rail 12 of the slide rail 10, rather than being limited to a specific "point" position.

[0034] The lock body 33 is placed in the inner cavity of the inner rail 11, and its upper surface abuts against the lower end of the unlocking pin 32 placed in the inner rail 11. One side of the lock body 33 has a lock card 331 extending horizontally. Specifically, the lock card 331 is adapted to the lock grooves provided on the side walls of the inner rail 11 and the outer rail 12. The lock card 33 is configured such that when the locking working position is switched to the unlocking working position, the lock card 33 is displaced in the inner rail lock groove 111 and the outer rail lock groove 121 to be separated from the outer rail lock groove 121; when the unlocking working position is switched to the locking working position, the lock card 33 is displaced in the inner rail lock groove 111 to be placed in both the inner rail lock groove 111 and the outer rail lock groove 121. That is, the lock card 33 can be in contact with the inner rail lock groove 111 and the outer rail lock groove 121 in its displacement direction. In the unlocking working position, the lock card 331 needs to move down with the lock body 33 to disengage from the outer rail lock slot 121 and be placed only in the inner rail lock slot 111, so that the inner rail 11 and the outer rail 12 can slide relative to each other; in the locking working position, the lock card 331 needs to move up with the lock body 33 to be placed in both the outer rail lock slot 121 and the inner rail lock slot 111, thereby limiting the relative sliding between the inner rail 11 and the outer rail 12.

[0035] In actual use, the driving component 20 is used as the power source to realize automatic control. Specifically, the corresponding unlocking cam 31 and unlocking pin 32 are used to convert and output the force switching between the unlocking working position and the locking working position; based on the synchronous action of the unlocking pin 32 and the lock body 33, the slide rail is unlocked through the lock card 331 on the lock body 33 and the lock grooves respectively opened on the side walls of the inner rail 11 and the outer rail 21, thereby controlling the unlocking and locking of the slide rail.

[0036] In order to ensure that the slide rail is quickly reset to the locked state, as a preferred embodiment, the unlocking assembly 30 can be provided with an elastic member between the lock body 33 and the inner rail 11, and configured as follows: when switched to the unlocking working position, the elastic member generates deformation reserve energy after the lock body 33 is displaced; when switched to the locking working position, the elastic member releases the deformation energy to provide the lock body 33 with a reset force. Figure 2-Figure 5 ,in, Figure 5 It is a cross-sectional view of the unlocking assembly 10 formed along the longitudinal direction of the slide rail.

[0037] Specifically, the elastic member is a spring wire 34 installed in the body of the lock body 33, and a slot 112 adapted to the spring wire 34 is provided on the side wall of the inner rail 11. The slot 112 can be realized by welding, bonding or riveting, etc., making full use of the inner cavity space of the inner rail 11, and having the characteristics of compact and reliable structure. When switched to the locking working position, the spring wire 34 releases deformation energy to provide the lock body 33 with a resetting force, thereby further ensuring that the slide rail quickly returns to the locked state.

[0038] In this solution, the unlocking cam 31 forms a working surface adapted to the unlocking pin 32 through the cam groove 311 opened thereon. Figure 3 and Figure 4 As shown, the unlocking pin 32 is located beside the unlocking cam 31, and is provided with a follower pin extending horizontally and adapted to fit in the cam slot 311. The follower pin can be integrally formed with the body of the unlocking pin 32, or can be realized by a split assembly method.

[0039] As shown in the figure, a through hole 321 is formed at the upper end of the unlocking pin 32, and the follower pin is formed by a threaded fastener 35 that is inserted through the through hole 321 and the cam groove 311. The threaded fastener 35 is used to form the follower pin that matches the cam groove 311, which can effectively control the product manufacturing cost while achieving good assembly processability, and fully utilize the structure's own space to a certain extent.

[0040] Theoretically, the reciprocating movement of the unlocking pin 32 maintains the linear displacement as the optimal state. In order to avoid the vertical displacement swing of the unlocking pin 32, as a preferred embodiment, a guide sleeve 36 can be nested between the top body of the inner rail 11 and the unlocking pin 32. Specifically, the guide sleeve 36 is designed as a variable diameter with a larger upper part and a smaller lower part. That is, the lower part of the outer peripheral surface of the guide sleeve 36 is inwardly retracted to form a limiting step, and its lower part (small diameter section 361) is inserted into the top body of the inner rail 11, which has good assembly processability. The lower end of the unlocking pin 32 has a radially outwardly extending limiting portion 322, which forms a vertical limit with the lower end of the guide sleeve 36 and / or the top body of the inner rail 11 to ensure the stability of the dynamic matching relationship of the mechanism.

[0041] It should be understood that two slide rails 10 are usually provided at the bottom of the seat body, especially in the case of long slide rails. Accordingly, the unlocking assembly 30 and the support seat 40 are respectively provided corresponding to the two slide rails 10, and an unlocking link 50 is provided between the unlocking cams 31 of the two unlocking assemblies 30, and the output end of the driving component 20 is connected to the unlocking link 50. In this way, the unlocking link 50 is used to realize the synchronous unlocking and locking of the two unlocking assemblies 30, which is suitable for seats with two slide rails 10, and the synchronous control of the two slide rails 10 can be completed by using one driving component 20.

[0042] Furthermore, the unlocking cams 31 of the two unlocking assemblies 30 are respectively located on the outside of the corresponding support seats 40 and are respectively fixed to the two ends of the unlocking link 50, so that the overall structure is more compact and reasonable; specifically, the unlocking link 50 has a shaft neck adapted to the axial hole of the support seat 40 to construct a pivot connection between the unlocking cam 31 and the support seat 40.

[0043] It is particularly noted that the inner rail lock slot 111 and the outer rail lock slot 121 for matching with the lock card 33 can be specifically designed according to comprehensive factors such as specific assembly requirements of the inner rail 11 and the outer rail 12. For example, but not limited to, the preferred exemplary illustration in the figure.

[0044] Please also see Figure 6 and Figure 7 ,in, Figure 6 The assembly relationship between the lock card 33 and the inner rail lock slot 111 is shown. Figure 7 The assembly relationship of the components is shown in the cross section of the slide rail. Specifically, after the two sides of the inner rail 11 are bent downward, they are bent horizontally outward and then upward to form two bent sections, and inner rail lock grooves 111 are respectively opened opposite to each other; after the two sides of the outer rail 12 are bent horizontally inward, they are bent downward and outer rail lock grooves 121 are opened in the downward bending sections. Based on the functional requirements of the adaptation of the lock card 331, the inner rail lock groove 111 and the outer rail lock groove 121 are arranged opposite to each other in the horizontal direction, and the bottom of the inner rail lock groove 111 is lower than the lower edge of the outer rail lock groove 121 in the height direction, and the height difference needs to be greater than or equal to the thickness of the lock card 33, so that when the locking working position is switched to the unlocking working position, the lock card 33 moves in the inner rail lock groove 111 and the outer rail lock groove 121 to be separated from the outer rail lock groove 121 to achieve unlocking.

[0045] The following briefly describes the motion principle of the slide rail unlocking mechanism in this embodiment:

[0046] Unlock: As Figure 5 As shown, when the driving component 20 (unlocking motor) rotates counterclockwise, the synchronous unlocking link 50 is driven to rotate counterclockwise, and the synchronous unlocking link 50 rotates counterclockwise, driving the unlocking cams 31 on both sides to rotate counterclockwise, and the unlocking cams 31 rotate counterclockwise to drive the unlocking pin 32 to move downward in the guide sleeve 36, and the unlocking pin 32 moves downward to press the lock body 33, and the downward pressing position of the unlocking pin 32 is in the middle position of the lock body 33, and the spring wire 34 is deformed by the force, and the lock body 33 moves downward, and the lock body 33 drives the lock card 331 to move downward, and when the lock card 331 moves downward to the outer rail lock slot 121 that is out of the outer rail 12, the inner rail 11 and the outer rail 12 will not be restricted by the lock card 331, and can move relative to each other under the drive of force.

[0047] Lock: If Figure 5As shown, when the driving component 20 rotates clockwise, the synchronous unlocking link 50 is driven to rotate clockwise, and the synchronous unlocking link 50 rotates clockwise, driving the unlocking cams 31 on both sides to rotate clockwise, and the unlocking cams 31 rotate clockwise to drive the unlocking pin 32 to move upward in the guide sleeve 36, and the unlocking pin 32 will not press down the lock body 33 when it moves upward. When the lock body 33 is not subjected to the downward force, the spring force generated by the deformation of the spring wire 34 due to the previous downward pressure will provide the lock body 33 with an upward force, and the lock body 33 moves upward, and the lock body 33 drives the lock card 331 to move upward. When the lock card 331 moves upward to enter the outer rail lock groove 121 of the outer rail 12, the inner rail 11 and the outer rail 12 will be restricted by the lock card 331 and cannot move relative to each other, thereby achieving locking.

[0048] In addition to the aforementioned slide rail unlocking mechanism, the present invention further provides a seat, including a seat body (not shown in the figure) that is slidably adapted to a vehicle body or a base through a slide rail, and also includes the aforementioned seat slide rail unlocking mechanism. Here, other functional components of the seat can be implemented using existing technologies, so they will not be described in detail herein.

[0049] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Seat rail unlocking mechanism, for matching inner rail and outer rail, characterized in that: It includes a driving component, an unlocking assembly and a support seat fixedly arranged on the upper surface of the inner rail; the unlocking assembly includes: An unlocking cam, pivotally connected to the support seat and provided with a rotational driving force by the driving component; An unlocking pin is inserted into the top body of the inner rail, and its upper end forms a cam pair with the working surface of the unlocking cam to drive its lower end to reciprocate and switch between the unlocking working position and the locking working position; A lock body is placed in the inner cavity of the inner rail, and its upper surface abuts against the lower end of the unlocking pin, and one side of the lock body has a lock card formed by horizontal extension, and the lock card is adapted to be fitted into the lock grooves provided on the side walls of the inner rail and the outer rail; and is configured such that: when switching from the locking working position to the unlocking working position, the lock card is displaced in the inner rail lock groove and the outer rail lock groove to be out of the outer rail lock groove; when switching from the unlocking working position to the locking working position, the lock card is displaced in the inner rail lock groove to be placed in both the inner rail lock groove and the outer rail lock groove; A guide sleeve is nested between the top body of the inner rail and the unlocking pin, the lower part of the outer circumferential surface of the guide sleeve is retracted inward to form a limiting step, and the lower part of the guide sleeve is inserted into the top body of the inner rail; and the lower end of the unlocking pin has a radially outwardly extending limiting portion, and the limiting portion forms a vertical limit with the lower end of the guide sleeve and / or the top body of the inner rail.

2. The seat rail unlocking mechanism according to claim 1, characterized in that: The unlocking component also includes: The elastic member is arranged between the lock body and the inner rail, and is configured as follows: when switched to the unlocking working position, the elastic member generates deformation reserve deformation energy after the lock body is displaced; when switched to the locking working position, the elastic member releases the deformation energy to provide the lock body with a resetting force.

3. The seat rail unlocking mechanism according to claim 2, characterized in that: The elastic member is a spring wire which is passed through the main body of the lock body, and a slot which is adapted to the spring wire is arranged on the side wall of the inner rail.

4. The seat rail unlocking mechanism according to any one of claims 1 to 3, characterized in that: The unlocking cam is provided with a cam groove forming the working surface, and the unlocking pin is located beside the unlocking cam, and is provided with a follower pin extending horizontally and adapted to be in the cam groove.

5. The seat slide rail unlocking mechanism according to claim 4, characterized in that: A penetration hole is formed at the upper end of the unlocking pin, and the follower pin is formed by a threaded fastener that is penetrated through the penetration hole and the cam groove.

6. The seat slide rail unlocking mechanism according to claim 1, characterized in that: The unlocking assembly and the supporting seat are two pieces respectively arranged corresponding to the two slide rails, an unlocking connecting rod is arranged between the unlocking cams of the two unlocking assemblies, and the output end of the driving component is transmission-connected with the unlocking connecting rod.

7. The seat rail unlocking mechanism according to claim 1, characterized in that: The unlocking cams of the two unlocking assemblies are respectively located on the outside of the support seat and are respectively fixed to the two ends of the unlocking connecting rod; the unlocking connecting rod has a shaft neck adapted to the axial hole of the support seat to construct a pivot connection between the unlocking cam and the support seat.

8. A seat, comprising a seat body slidably adapted to a vehicle body or a base through a slide rail, characterized in that: It also includes a seat slide rail unlocking mechanism as claimed in any one of claims 1 to 7.

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