Vehicle seat and slide rail locking and unlocking mechanism thereof

Abstract

The present invention discloses a vehicle seat and its slide rail locking and unlocking mechanism, including a slide rail assembly, a locking assembly, an unlocking assembly, and an operating assembly. The slide rail assembly is provided with an upper slide rail and a lower slide rail. The locking assembly is provided with a locking assembly bracket, a spindle, a left clamping claw, a right clamping claw and a torsion spring. The unlocking assembly is provided with a swing arm, a reset spring, a movable frame and a latch. The present invention uses a locking assembly to realize the forward and backward movement locking between the upper and lower slide rails, and the locking reliability is high; the passenger applies a downward force to the front end of the swing arm with the operating assembly, and the unlocking assembly can be controlled to release the locking of the upper and lower slide rails by the locking assembly, so as to realize the slide rail unlocking of the vehicle seat, and the passenger releases the operating assembly, and the downward force can be removed, so that the unlocking assembly is reset under the action of the reset spring to restore the locking of the vehicle seat slide rail; the unlocking operation of the present invention is simple and convenient, and ensures the dexterity, smoothness and good operating feel of the passenger operating the operating assembly to unlock the vehicle seat slide rail.

Description

Technical Field

[0001] The invention relates to a slide rail locking and unlocking mechanism of a vehicle seat and a vehicle seat using the slide rail locking and unlocking mechanism. Background Art

[0002] With the continuous development of vehicle technology and the continuous improvement of user requirements, higher requirements are placed on the safety and comfort of vehicle safety. Vehicle seats are an indispensable part of the vehicle, and the safety and comfort of vehicle seats are particularly important.

[0003] The vehicle seat slide rails are an integral part of the vehicle seat. Locking the slide rails is an important safeguard to prevent the driver and passengers from being injured when the vehicle is impacted. If the seat slide rail locking fails when the vehicle is impacted, it can easily cause a safety accident.

[0004] The fore and aft adjustment of vehicle seats is a basic function of most vehicle seats. This basic function is achieved by the vehicle seat slide rails. The slide rails can be used to adjust the vehicle seats for a certain distance forward and backward to meet the space requirements of different passengers and greatly improve the comfort of the passengers.

[0005] There are two ways to adjust the front and rear of a vehicle seat: electric adjustment and manual adjustment. Electric adjustment is performed by a micro-motor driving the slide rail mechanism, while manual adjustment is performed by manually unlocking the slide rail and then manually pushing and pulling the seat. For manual adjustment, the slide rail unlocking mechanism is an important part of the vehicle seat slide rail. When manually adjusting the front and rear, the slide rail must be in an unlocked state, which is achieved through the slide rail unlocking mechanism. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a vehicle seat and a slide rail locking and unlocking mechanism thereof, so as to solve the problem of low operational flexibility of the existing slide rail locking and unlocking mechanism.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0008] A slide rail locking and unlocking mechanism for a vehicle seat, comprising a slide rail assembly, a locking assembly, an unlocking assembly, and an operating assembly, wherein the slide rail assembly is provided with an upper slide rail and a lower slide rail which are mounted in a matching manner, and the upper slide rail can move forward and backward along the extension direction of the lower slide rail, and is characterized in that:

[0009] The left side of the upper slide rail and the lower slide rail are each provided with a plurality of left slot holes arranged at intervals along the extension direction; the right side of the upper slide rail and the lower slide rail are each provided with a plurality of right slot holes arranged at intervals along the extension direction;

[0010] The locking assembly is located in the inner cavity of the upper slide rail, and the locking assembly is provided with a locking assembly bracket, a spindle, a left claw, a right claw and a torsion spring. The locking assembly bracket is fixedly connected to the upper slide rail, and the spindle is fixed to the locking assembly bracket. The left claw and the right claw are respectively rotatably mounted on the spindle, and the torsion spring is sleeved on the spindle, and the two ends of the torsion spring are respectively overlapped with the left claw and the right claw, so that: under the action of the torsion spring, the left claw and the right claw are in an embracing state, and the claw teeth of the left claw are inserted into the right slot holes of the upper and lower slide rails, and the claw teeth of the right claw are inserted into the left slot holes of the upper and lower slide rails;

[0011] The operating assembly can overcome the force of the torsion spring through the unlocking assembly to open the left and right claws to an open state, so that: the claw teeth of the left claw are disengaged from the right slot holes of the upper and lower slide rails, and the claw teeth of the right claw are disengaged from the left slot holes of the upper and lower slide rails.

[0012] As a preferred embodiment of the present invention, the unlocking assembly is provided with a swing arm, a return spring, a movable frame and a latch; the swing arm is located outside the upper slide rail, and the rear end of the swing arm is rotatably connected to the upper slide rail; the movable frame is composed of a first plug-in portion, a connecting portion and a second plug-in portion, the connecting portion is connected between the upper end of the first plug-in portion and the upper end of the second plug-in portion, and the top surface of the upper slide rail is provided with two through holes, the connecting portion is located above the upper slide rail, and the connecting portion is fixedly connected to the middle of the swing arm, and the lower end of the first plug-in portion and the lower end of the second plug-in portion respectively penetrate into the inner cavity of the upper slide rail through the two through holes; the latch is fixed between the lower end of the first plug-in portion and the lower end of the second plug-in portion, and the latch passes through the gap between the left claw and the right claw; the return spring is connected between the upper slide rail and the swing arm;

[0013] The operating assembly can apply or remove the downward force to the front end of the swing arm, so that: when the left claw and the right claw are in the clasped state, the downward force applied by the operating assembly can drive the movable frame and the latch to move downward through the swing arm, so that the downward moving latch opens the left claw and the right claw to the open state; after the left claw and the right claw are in the open state and the operating assembly removes the downward force, the swing arm can drive the movable frame and the latch to move upward under the drive of the spring tension of the return spring, so that the left claw and the right claw return to the clasped state.

[0014] As a preferred embodiment of the present invention: at least one cam is mounted on the latch, and the cam is rotatable around the axis of the latch.

[0015] Preferably, the rear end of the swing arm is rotatably connected to the side of the upper slide rail via a first fixing pin, and the connecting portion of the movable frame is fixedly connected to the middle portion of the swing arm via bolts and nuts.

[0016] As a preferred embodiment of the present invention: the front end of the swing arm is provided with a support plate; the operating assembly is provided with a joystick, the front end of the joystick serves as a gripping end, the middle and rear part of the joystick can be rotatably assembled on the upper slide rail, and the rotation axis of the joystick is parallel to the rotation axis of the swing arm, and the rear end of the joystick can be pressed on the support plate of the swing arm.

[0017] As a preferred embodiment of the present invention: the operating assembly is also provided with a joystick bracket; the joystick bracket is composed of an upper limit frame, a base plate and a lower mounting plate, the upper limit frame and the lower mounting plate are respectively connected to the top surface and the bottom surface of the base plate, the base plate is riveted and fixed to the top surface of the upper slide rail, the middle and rear part of the joystick is rotatably connected to the lower mounting plate through a second fixing pin to realize the rotatable assembly of the joystick and the upper slide rail; and the rear end of the joystick is limited between the upper limit frame of the joystick bracket and the support plate of the swing arm.

[0018] As a preferred embodiment of the present invention: the left slot holes and the right slot holes of the upper slide rail and the lower slide rail are arranged at equal intervals along the extension direction of the lower slide rail; and the number of left slot holes and the number of right slot holes of the upper slide rail are equal to the number of claw teeth of the left claw and the right claw, and the left slot holes and the right slot holes of the lower slide rail are fully distributed on the lower slide rail in the extension direction.

[0019] As a preferred embodiment of the present invention: the locking assembly bracket is riveted and fixed to the top surface of the upper slide rail, and the axis of the spindle is arranged parallel to the extension direction of the lower slide rail.

[0020] As a preferred embodiment of the present invention: the upper slide rail and the lower slide rail are installed in cooperation as follows: a plurality of balls are installed between the left side of the upper slide rail and the left side of the lower slide rail, and between the right side of the upper slide rail and the right side of the lower slide rail through a retaining frame.

[0021] A vehicle seat comprises a seat body, characterized in that: the vehicle seat also comprises the slide rail locking and unlocking mechanism; the upper slide rail of the slide rail locking and unlocking mechanism is fixed to the bottom of the seat body, and the lower slide rail of the slide rail locking and unlocking mechanism is fixed to the vehicle body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] First, the present invention adopts a locking assembly composed of a locking assembly bracket, a spindle, a left claw, a right claw and a torsion spring, and utilizes the locking assembly to achieve forward and backward movement locking between the upper slide rail and the lower slide rail, which has the advantage of high reliability of vehicle seat slide rail locking.

[0024] Second, the present invention adopts an unlocking component provided with a swing arm, a return spring, a movable frame and a latch. The occupant uses the operating component to apply a downward force to the front end of the swing arm, thereby controlling the unlocking component to release the lock of the upper slide rail and the lower slide rail by the locking component, thereby unlocking the slide rails of the vehicle seat. When the occupant releases the operating component, the downward force can be removed, and the unlocking component can be reset under the action of the return spring to restore the lock of the vehicle seat slide rails. Therefore, the unlocking operation of the present invention is simple and convenient, which is convenient for the occupant to adjust the forward and backward movement of the upper slide rail and the lower slide rail while keeping the vehicle seat slide rails unlocked.

[0025] Third, the locking assembly and unlocking assembly used in the present invention have simple and reliable movement modes when working, which can avoid the occurrence of jamming and ensure the dexterity, smoothness and good operating feel of the occupants in operating the operating assembly to unlock the vehicle seat slide rail.

[0026] Fourthly, the locking assembly and unlocking assembly adopted by the present invention can be applied to the vast majority of vehicle seats and seat slides on the market. Therefore, the present invention has the advantages of strong versatility and a wide range of applications.

[0027] Fifth, the operating assembly adopted in the present invention is provided with an operating lever rotatably connected to the upper slide rail in the middle and rear portion. The passenger can unlock or restore the slide rail of the vehicle seat by holding the front end of the operating lever and lifting or releasing the operating lever. Therefore, the present invention has the advantages of labor-saving and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0029] Figure 1 It is a structural schematic diagram of the slide rail locking and unlocking mechanism of the present invention;

[0030] Figure 2 It is a structural exploded diagram of the slide rail locking and unlocking mechanism of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the locking assembly, the unlocking assembly and the operating assembly after the right claw is hidden in the present invention;

[0032] Figure 4 1 is an exploded view of the locking assembly, the unlocking assembly and the operating assembly in the present invention, in which 50 represents a rivet used for riveting;

[0033] Figure 5It is a schematic diagram of the structure of the lower slide rail, the retaining frame and the ball in the present invention;

[0034] Figure 6 for Figure 5 AA section view. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with embodiments:

[0036] Embodiment 1

[0037] like Figures 1 to 6 As shown, the present invention discloses a slide rail locking and unlocking mechanism for a vehicle seat, including a slide rail assembly 10, a locking assembly 20, an unlocking assembly 30, and an operating assembly 40. The slide rail assembly 10 is provided with an upper slide rail 11 and a lower slide rail 12 that are installed in a matching manner. The upper slide rail 11 can move forward and backward along the extension direction of the lower slide rail 12.

[0038] The left side portions of the upper slide rail 11 and the lower slide rail 12 are each provided with a plurality of left slot holes spaced apart along the extension direction, which are respectively referred to as the left slot hole of the upper slide rail 11 and the left slot hole 12a of the lower slide rail 12; the right side portions of the upper slide rail 11 and the lower slide rail 12 are each provided with a plurality of right slot holes spaced apart along the extension direction, which are respectively referred to as the right slot hole 11b of the upper slide rail 11 and the right slot hole 12b of the lower slide rail 12;

[0039] The locking assembly 20 is located in the inner cavity of the upper slide rail 11. The locking assembly 20 is provided with a locking assembly bracket 21, a spindle 22, a left claw 23, a right claw 24 and a torsion spring 25. The left and right claws 23 and 24 are respectively rotatably mounted on the spindle 22, and the torsion spring 25 is sleeved on the spindle 22, and the two ends of the torsion spring 25 are respectively overlapped with the left and right claws 23 and 24, so that: under the action of the torsion spring 25, the left and right claws 23 and 24 are in an embraced state, and the claw teeth of the left claw 23 are inserted into the right slot holes of the upper and lower rails 11 and 12, and the claw teeth of the right claw 24 are inserted into the left slot holes of the upper and lower rails 11 and 12; thus, the upper and lower rails 11 and 12 can be locked by the locking assembly 20 and cannot move forward and backward relative to each other, thereby realizing the slide rail locking of the vehicle seat.

[0040] The operating assembly 40 can overcome the force of the torsion spring 25 through the unlocking assembly 30, and open the left claw 23 and the right claw 24 to an open state, so that: the claw teeth of the left claw 23 are disengaged from the right slot holes of the upper slide rail 11 and the lower slide rail 12, and the claw teeth of the right claw 24 are disengaged from the left slot holes of the upper slide rail 11 and the lower slide rail 12. Thus, the operating assembly 40 can release the locking assembly 20 from locking the upper slide rail 11 and the lower slide rail 12 through the unlocking assembly 30, thereby unlocking the slide rails of the vehicle seat.

[0041] Preferably, the locking assembly bracket 21 is riveted and fixed to the top surface 11 - 1 of the upper slide rail 11 , and the axis of the spindle 22 is arranged parallel to the extension direction of the lower slide rail 12 .

[0042] Embodiment 2

[0043] On the basis of the above-mentioned embodiment 1, this embodiment 2 also adopts the following preferred structure:

[0044] The unlocking assembly 30 is provided with a swing arm 31, a return spring 32, a movable frame 33 and a latch 34; the swing arm 31 is located outside the upper slide rail 11, and the rear end 31-1 of the swing arm 31 is rotatably connected to the upper slide rail 11; the movable frame 33 is composed of a first plug-in portion 33-1, a connecting portion 33-2 and a second plug-in portion 33-3, the connecting portion 33-2 is connected between the upper end of the first plug-in portion 33-1 and the upper end of the second plug-in portion 33-3, the top surface 11-1 of the upper slide rail 11 is provided with two through holes 11a, the connecting portion 33-2 is located above the upper slide rail 11, and the connecting portion 33-2 is connected to the middle portion 31-2 of the swing arm 31 The lower ends of the first inserting piece 33-1 and the second inserting piece 33-3 are respectively inserted into the inner cavity of the upper slide rail 11 through the two through holes 11a; the latch 34 is fixed between the lower ends of the first inserting piece 33-1 and the lower ends of the second inserting piece 33-3, and the latch 34 passes through the gap 20a between the left claw 23 and the right claw 24; the return spring 32 is connected between the upper slide rail 11 and the swing arm 31;

[0045] The operating component 40 can apply or remove the downward force to the front end 31-3 of the swing arm 31, so that: when the left claw 23 and the right claw 24 are in the embracing state, the downward force applied by the operating component 40 can drive the movable frame 33 and the latch 34 to move downward through the swing arm 31, so that the downward moving latch 34 stretches the left claw 23 and the right claw 24 to the open state; after the left claw 23 and the right claw 24 are in the open state and the operating component 40 removes the downward force, driven by the spring tension of the return spring 32, the swing arm 31 can drive the movable frame 33 and the latch 34 to move upward, so that the left claw 23 and the right claw 24 are restored to the embracing state.

[0046] Among them, preferably, the rear end of the swing arm 31 is rotatably connected to the side of the upper slide rail 11 through a first fixing pin 36, and the connecting part 33-2 of the movable frame 33 is fixedly connected to the middle part 31-2 of the swing arm 31 through a bolt 37 and a nut 38.

[0047] Embodiment 3

[0048] On the basis of the above-mentioned embodiment 2, this embodiment 3 also adopts the following preferred structure:

[0049] At least one cam 35 is mounted on the latch 34, and the cam 35 can rotate around the axis of the latch 34. Therefore, when the latch 34 moves downward or upward to open or restore the left claw 23 and the right claw 24, the latch 34 contacts the left claw 23 and the right claw 24 through the cam 35, and the cam 35 rotates during this process, which can reduce the wear of the latch 34, the left claw 23 and the right claw 24, and improve the smoothness of the opening or restoration of the left claw 23 and the right claw 24.

[0050] Embodiment 4

[0051] On the basis of the above-mentioned embodiment 2, this embodiment 4 also adopts the following preferred structure:

[0052] The front end 31-3 of the swing arm 31 is provided with a support plate 31-4; the operating assembly 40 is provided with an operating rod 41, the front end of the operating rod 41 is used as a gripping end, the middle and rear part of the operating rod 41 is rotatably mounted on the upper slide rail 11, and the rotation axis of the operating rod 41 is parallel to the rotation axis of the swing arm 31, and the rear end of the operating rod 41 can be pressed on the support plate 31-4 of the swing arm 31. Therefore, the passenger holds the front end of the operating rod 41 and lifts it upward, so that the rear end of the operating rod 41 presses down the support plate 31-4 of the swing arm 31, that is, a downward force is applied to the front end 31-3 of the swing arm 31, so as to unlock the slide rail of the vehicle seat.

[0053] Embodiment 5

[0054] On the basis of the above-mentioned embodiment 2, this embodiment 5 also adopts the following preferred structure:

[0055] The operating assembly 40 is also provided with an operating lever bracket 42; the operating lever bracket 42 is composed of an upper limit frame 42-1, a base plate 42-2 and a lower mounting plate 42-3, the upper limit frame 42-1 and the lower mounting plate 42-3 are respectively connected to the top surface and the bottom surface of the base plate 42-2, the base plate 42-2 is riveted and fixed to the top surface 11-1 of the upper slide rail 11, and the middle and rear part of the operating lever 41 is rotatably connected to the lower mounting plate 42-3 through a second fixing pin 43 to realize the rotatable assembly of the operating lever 41 and the upper slide rail 11; and the rear end of the operating lever 41 is limited between the upper limit frame 42-1 of the operating lever bracket 42 and the support plate 31-4 of the swing arm 31. Thus, the rear end of the joystick 41 can only swing up and down a certain range between the upper limit frame 42-1 and the support plate 31-4, so that the occupant can quickly and accurately hold the column joystick 41 at a fixed position, thereby improving the ease of use of the slide rail locking and unlocking mechanism.

[0056] In addition, in addition to the above-mentioned operation lever 41 pressing down the front end 31 - 3 of the swing arm 31 , the present invention can also use the operation component 40 to pull down the front end 31 - 3 of the swing arm 31 to achieve the application of the downward force.

[0057] Embodiment 6

[0058] Based on any one of the above embodiments 1 to 5, this embodiment 6 also adopts the following preferred structure:

[0059] The left card slot holes and the right card slot holes of the upper slide rail 11 and the lower slide rail 12 are arranged at equal intervals along the extension direction of the lower slide rail 12; and the number of left card slot holes and the number of right card slot holes of the upper slide rail 11 are equal to the number of claw teeth of the left claw 23 and the right claw 24, and the left card slot holes and the right card slot holes of the lower slide rail 12 are fully distributed on the lower slide rail 12 in the extension direction.

[0060] Embodiment 7

[0061] Based on any one of the above embodiments 1 to 6, this embodiment 7 also adopts the following preferred structure:

[0062] like Figure 2 , Figure 5 and Figure 6As shown, the upper slide rail 11 and the lower slide rail 12 are installed in a manner that: a plurality of balls 62 are installed between the left side of the upper slide rail 11 and the left side of the lower slide rail 12, and between the right side of the upper slide rail 11 and the right side of the lower slide rail 12 through a retaining frame 61. Thus, the balls 62 can roll in the retaining frame 61 in the original position, so that the upper slide rail 11 can move forward and backward along the extension direction of the lower slide rail 12.

[0063] In addition, the present invention may also adopt any slide rail mechanism in the prior art, as long as it is ensured that the upper slide rail 11 can move forward and backward along the extension direction of the lower slide rail 12 .

[0064] Embodiment 8

[0065] The eighth embodiment discloses a vehicle seat, including a seat body.

[0066] The vehicle seat also includes the slide rail locking and unlocking mechanism described in any one of the above-mentioned embodiments 1 to 7; the upper slide rail 11 of the slide rail locking and unlocking mechanism is fixed to the bottom of the seat body, and the lower slide rail 12 of the slide rail locking and unlocking mechanism is fixed to the vehicle body.

[0067] The working mode of the vehicle seat using the slide rail locking and unlocking mechanism of the present invention is as follows:

[0068] When the vehicle seat does not need to be adjusted forward and backward, the seat slide rails, i.e., the upper slide rail 11 and the lower slide rail 12, are in a locked state, i.e., the left claw 23 and the right claw 24 are engaged, and their claw teeth are respectively inserted into the corresponding slot holes of the upper slide rail 11 and the lower slide rail 12, so that the forward and backward relative movement of the upper slide rail 11 and the lower slide rail 12 is restricted, and the slide rails are locked.

[0069] When the vehicle seat is adjusted forward and backward, the occupant lifts the operating lever 41, and the operating lever 41 rotates around the axis of the second fixed pin 43. The rear end of the operating lever 41 presses the swing arm 31 downward, and the swing arm 31 rotates around the first fixed pin 36, stretching the return spring 32 while driving the movable frame 33 downward. The pin 34 and the two cams 35 installed on the movable frame 33 move downward to open the left claw 23 and the right claw 24, so that the left claw 23 and the right claw 24 are opened, and their claw teeth are disengaged from the slot holes of the upper slide rail 11 and the lower slide rail 12. At this time, the slide rail is unlocked, and the occupant pushes or pulls the seat forward or backward to the desired position.

[0070] After the occupant pushes or pulls the seat forward or backward to the desired position, the joystick 41 is lowered, the return spring 32 contracts, and the swing arm 31 is pulled to rotate around the axis of the first fixed pin 36. The swing arm 31 drives the movable frame 33 upward, and the two cams 35 installed on the pin 34 of the movable frame 33 are separated from the left claw 23 and the right claw 24. Under the action of the torsion spring 25, the left claw 23 and the right claw 24 are closed, and their claw teeth are inserted into the slot holes of the upper slide rail 11 and the lower slide rail 12. The upper slide rail 11 and the lower slide rail 12 are relatively fixed, and the slide rails are locked. At this time, the forward and backward movement adjustment of the seat is completed.

[0071] The present invention is not limited to the above-mentioned specific implementation modes. According to the above-mentioned contents, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the present invention, the present invention can also make other various forms of equivalent modifications, replacements or changes, all of which fall within the protection scope of the present invention.

Claims

1. A slide rail locking and unlocking mechanism for a vehicle seat, comprising a slide rail assembly (10), a locking assembly (20), an unlocking assembly (30), and an operating assembly (40), wherein the slide rail assembly (10) is provided with an upper slide rail (11) and a lower slide rail (12) which are mounted in a matching manner, and the upper slide rail (11) can move forward and backward along an extension direction of the lower slide rail (12), and is characterized in that: The left side portions of the upper slide rail (11) and the lower slide rail (12) are each provided with a plurality of left slot holes arranged at intervals along the extension direction; the right side portions of the upper slide rail (11) and the lower slide rail (12) are each provided with a plurality of right slot holes arranged at intervals along the extension direction; The locking assembly (20) is located in the inner cavity of the upper slide rail (11), and the locking assembly (20) is provided with a locking assembly bracket (21), a spindle (22), a left claw (23), a right claw (24) and a torsion spring (25). The locking assembly bracket (21) is fixedly connected to the upper slide rail (11), the spindle (22) is fixed on the locking assembly bracket (21), the left claw (23) and the right claw (24) are respectively rotatably mounted on the spindle (22), and the torsion spring (25) is fixedly connected to the upper slide rail (11). The spring (25) is sleeved on the spindle (22), and the two ends of the torsion spring (25) are respectively overlapped with the left clamping claw (23) and the right clamping claw (24), so that: under the action of the torsion spring (25), the left clamping claw (23) and the right clamping claw (24) are in an embraced state, the clamping claw teeth of the left clamping claw (23) are inserted into the right clamping slot holes of the upper slide rail (11) and the lower slide rail (12), and the clamping claw teeth of the right clamping claw (24) are inserted into the left clamping slot holes of the upper slide rail (11) and the lower slide rail (12); The operating component (40) can overcome the action force of the torsion spring (25) through the unlocking component (30) to open the left clamping claw (23) and the right clamping claw (24) to an open state, so that: the clamping claw teeth of the left clamping claw (23) are disengaged from the right clamping slot holes of the upper slide rail (11) and the lower slide rail (12), and the clamping claw teeth of the right clamping claw (24) are disengaged from the left clamping slot holes of the upper slide rail (11) and the lower slide rail (12); The unlocking assembly (30) is provided with a swing arm (31), a return spring (32), a movable frame (33) and a latch (34); the swing arm (31) is located outside the upper slide rail (11), and the rear end (31-1) of the swing arm (31) is rotatably connected to the upper slide rail (11); the movable frame (33) is composed of a first plug-in portion (33-1), a connecting portion (33-2) and a second plug-in portion (33-3); the connecting portion (33-2) is connected between the upper end of the first plug-in portion (33-1) and the upper end of the second plug-in portion (33-3); the top surface (11-1) of the upper slide rail (11) is provided with two through holes (11a); the connecting portion (33 -2) is located above the upper slide rail (11), and the connecting portion (33-2) is fixedly connected to the middle portion (31-2) of the swing arm (31), and the lower end of the first plug-in portion (33-1) and the lower end of the second plug-in portion (33-3) respectively penetrate into the inner cavity of the upper slide rail (11) through the two through holes (11a); the latch (34) is fixed between the lower end of the first plug-in portion (33-1) and the lower end of the second plug-in portion (33-3), and the latch (34) passes through the gap (20a) between the left claw (23) and the right claw (24); the return spring (32) is connected between the upper slide rail (11) and the swing arm (31); The operating assembly (40) is capable of applying or removing a downward force to the front end (31-3) of the swing arm (31), so that: when the left clamping claw (23) and the right clamping claw (24) are in the embracing state, the downward force applied by the operating assembly (40) can drive the movable frame (33) and the latch (34) to move downward through the swing arm (31), so that the latch (34) moving downward opens the left clamping claw (23) and the right clamping claw (24) to the open state; after the left clamping claw (23) and the right clamping claw (24) are in the open state and the operating assembly (40) removes the downward force, the swing arm (31) can drive the movable frame (33) and the latch (34) to move upward under the spring tension of the return spring (32), so that the left clamping claw (23) and the right clamping claw (24) are restored to the embracing state; At least one cam (35) is mounted on the latch pin (34), and the cam (35) is rotatable around the axis of the latch pin (34); The rear end of the swing arm (31) is rotatably connected to the side of the upper slide rail (11) via a first fixing pin (36), and the connecting portion (33-2) of the movable frame (33) is fixedly connected to the middle portion (31-2) of the swing arm (31) via a bolt (37) and a nut (38).

2. The slide rail locking and unlocking mechanism of a vehicle seat according to claim 1, characterized in that: The front end (31-3) of the swing arm (31) is provided with a support plate (31-4); the operating assembly (40) is provided with an operating rod (41), the front end of the operating rod (41) serves as a gripping end, the middle and rear parts of the operating rod (41) are rotatably mounted on the upper slide rail (11), and the rotation axis of the operating rod (41) is parallel to the rotation axis of the swing arm (31), and the rear end of the operating rod (41) can be pressed on the support plate (31-4) of the swing arm (31).

3. The slide rail locking and unlocking mechanism of a vehicle seat according to claim 1, characterized in that: The control assembly (40) is further provided with a control rod bracket (42); the control rod bracket (42) is composed of an upper limit bracket (42-1), a base plate (42-2) and a lower mounting plate (42-3); the upper limit bracket (42-1) and the lower mounting plate (42-3) are respectively connected to the top surface and the bottom surface of the base plate (42-2); the base plate (42-2) is riveted and fixed to the top surface (11-1) of the upper slide rail (11); the middle and rear parts of the control rod (41) are rotatably connected to the lower mounting plate (42-3) via a second fixing pin (43) to achieve rotatable assembly of the control rod (41) and the upper slide rail (11); and the rear end of the control rod (41) is limited between the upper limit bracket (42-1) of the control rod bracket (42) and the support plate (31-4) of the swing arm (31).

4. The slide rail locking and unlocking mechanism of a vehicle seat according to any one of claims 1 to 3, characterized in that: The left and right slot holes of the upper slide rail (11) and the lower slide rail (12) are arranged at equal intervals along the extension direction of the lower slide rail (12); and the number of the left and right slot holes of the upper slide rail (11) is equal to the number of the claw teeth of the left claw (23) and the right claw (24), and the left and right slot holes of the lower slide rail (12) are distributed throughout the lower slide rail (12) in the extension direction.

5. The slide rail locking and unlocking mechanism of a vehicle seat according to any one of claims 1 to 3, characterized in that: The locking assembly bracket (21) is riveted and fixed to the top surface (11-1) of the upper slide rail (11), and the axis of the spindle (22) is arranged parallel to the extension direction of the lower slide rail (12).

6. The slide rail locking and unlocking mechanism of a vehicle seat according to any one of claims 1 to 3, characterized in that: The upper slide rail (11) and the lower slide rail (12) are installed in a coordinated manner as follows: a plurality of balls (62) are installed between the left side of the upper slide rail (11) and the left side of the lower slide rail (12), and between the right side of the upper slide rail (11) and the right side of the lower slide rail (12) via a retaining frame (61).

7. A vehicle seat, comprising a seat body, characterized in that: The vehicle seat also includes the slide rail locking and unlocking mechanism according to any one of claims 1 to 6; the upper slide rail (11) of the slide rail locking and unlocking mechanism is fixed to the bottom of the seat body, and the lower slide rail (12) of the slide rail locking and unlocking mechanism is fixed to the vehicle body.

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