A slide rail unlocking device for a car seat and a slide rail mechanism thereof

Abstract

The present invention discloses a slide rail unlocking device for a car seat, wherein an unlocking plate is connected to an unlocking drive plate through an unlocking shaft, and both ends of the unlocking drive plate are connected to a locking pin push plate through a fixing pin, and a locking pin intermediate fixing plate parallel to the locking pin push plate is arranged between the two locking pin push plates, and each side of the locking pin intermediate fixing plate is provided with the same number of locking pins between the locking pin push plates on the corresponding side, and the positions of the locking pins on both sides are cross-arranged, and each locking pin is sleeved with a compression spring, and the outer sides of the two locking pin push plates are provided with locking pin side fixing plates, and the two ends of the two locking pin side fixing plates are connected to the two ends of the locking pin intermediate fixing plate. The present invention provides a slide rail unlocking device for a car seat and a slide rail mechanism thereof, which can realize short step adjustment, reliable locking, and meet low, medium and high strength requirements.

Description

Technical Field

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

[0002] With the development of economy, cars have become an indispensable means of transportation for people. With the continuous improvement and perfection of cars, people pay more attention to the comfort and safety of cars when choosing cars. Car seats are one of the important interior decorations in cars, and car seats slide back and forth through the cooperation between the upper slide rail and the lower slide rail to adapt to different needs. In order to keep the seat body fixed to the car body floor after the seat adjustment is completed, an unlocking device is also provided between the upper slide rail and the lower slide rail to lock the upper slide rail and the lower slide rail.

[0003] The current unlocking devices generally have two forms: a lock plate and a lock pin. Among them, the Chinese invention patent authorization announcement number is "CN103085684B", and the name is "A car, a car seat and a slide rail mechanism thereof", which adopts a lock plate design. The step adjustment distance of this design is the distance between the two lock teeth on the lock plate, but the step distance is large, that is, the distance between each gear position of the slide rail is large, the comfort of the passengers is not good, and there is a phenomenon that the lock plate fails to enter the groove of the lower slide rail, resulting in locking failure, thereby posing a great threat to the life safety of the passengers.

[0004] Another one, with the Chinese invention authorization announcement number "CN202557333U" and the name "A slide rail for a car seat", adopts a locking pin design, but when in the locked position, only one side of the locking pin is locked. Such an unlocking device is only suitable for slide rails with medium and low strength requirements and cannot meet the strength requirements of high-strength slide rails. Therefore, the market now urgently needs an unlocking device that can achieve short step adjustment, reliable locking, and meet low, medium and high strength requirements. Summary of the invention

[0005] The object of the present invention is to provide a slide rail unlocking device for a car seat and a slide rail mechanism thereof which can realize short step adjustment, have reliable locking, and meet low, medium and high strength requirements.

[0006] The objective of the present invention is achieved in this way. A slide rail unlocking device for a car seat comprises an unlocking plate, an unlocking shaft, an unlocking drive plate, a locking pin push plate, a locking pin middle fixing plate, a locking pin, a compression spring and a locking pin side fixing plate. The unlocking plate is connected to the unlocking drive plate through the unlocking shaft, and both ends of the unlocking drive plate are connected to the locking pin push plate through a fixing pin. A locking pin middle fixing plate parallel to the locking pin push plate is arranged between the two locking pin push plates. The same number of locking pins are arranged between the locking pin push plates on each side of the locking pin middle fixing plate and the locking pins on the side corresponding to it, and the positions of the locking pins on both sides are cross-arranged, and each locking pin is sleeved with a compression spring, and a locking pin side fixing plate is arranged on the outer sides of the two locking pin push plates, and the two ends of the two locking pin side fixing plates are connected to the two ends of the locking pin middle fixing plate.

[0007] The locking pin push plate is an integrated structure, including a top plate and a side plate in the shape of an inverted "6", the outer end of the top plate is connected to the side plate through an arc connecting plate, and the side plate and the top plate are arranged perpendicular to each other, an oblong hole is processed on the end of the top plate adjacent to the arc connecting plate, and a claw is connected to the end of the top plate away from the arc connecting plate, the locking pin push plate is overlapped on the middle fixing plate of the locking pin through the claw, one side of the claw has a first groove, locking pin arcs for clamping the locking pin are processed on both ends of the side plate, and at least one third through hole is processed in the middle of the side plate.

[0008] The top of the unlocking shaft is stepped, and the bottom of the unlocking shaft is provided with an unlocking shaft spline. The unlocking drive plate is a left-right symmetrical structure with horizontal two sides of the middle protrusion. The middle protrusion is provided with an unlocking drive plate spline hole, and the unlocking shaft spline is fixedly connected to the unlocking drive plate through the unlocking drive plate spline hole. The unlocking drive plate is provided with a second through hole on both sides, and the position of the second through hole corresponds to the position of the oblong hole, and both ends of the fixing pin are provided with a fixing pin flat head, and the fixing pin passes through the second through hole on the unlocking drive plate and the oblong hole on the locking pin push plate, and the unlocking drive plate and the locking pin push plate are connected through the fixing pin flat heads at both ends of the fixing pin.

[0009] A second groove is processed at the middle top of the locking pin middle fixing plate, and the length of the second groove is not less than the total width of the two locking pin push plates after matching with each other. At least six fourth through holes are processed below the second groove, and the six fourth through holes respectively correspond to the third through holes and the positions of the locking pin arcs on the locking pin push plates on both sides of the locking pin middle fixing plate. At least three locking pins are arranged between the locking pin push plates on each side of the locking pin middle fixing plate and the corresponding side. The head of the locking pin passes through the third through hole or the locking pin arc on the locking pin push plate and is connected to the locking pin push plate. The tail of the locking pin passes through the fourth through hole and is connected to the locking pin middle fixing plate. The locking pin middle fixing plate circular holes are processed at both ends of the locking pin middle fixing plate.

[0010] The head of each locking pin is tapered.

[0011] Each locking pin is provided with a locking pin shoulder, one end of the compression spring is in contact with the locking pin shoulder, and the other end of the compression spring is in contact with the middle fixing plate of the locking pin.

[0012] One end of the unlocking piece is provided with a flange, the other end of the unlocking piece is provided with a first through hole, and the top of the unlocking shaft is fixedly connected to the unlocking piece through the first through hole.

[0013] The middle part of the side fixing plate of the locking pin is a fixing plate body protruding outward, the top of at least one side of the fixing plate body is connected to an upper slide rail connecting plate, and the two sides of the fixing plate body are connected to fixing plate connecting plates extending outward, and at least three main body through holes are processed on the fixing plate body, and the position of the main body through holes corresponds to the position of the third through hole on the locking pin push plate or the position of the locking pin arc, and a fixing plate through hole is processed on the fixing plate connecting plate, and the position of the fixing plate through hole corresponds to the position of the circular hole of the middle fixing plate of the locking pin, and a connecting plate through hole is processed on the upper slide board connecting plate.

[0014] A slide rail mechanism comprises an upper slide rail and a lower slide rail, and also comprises the slide rail unlocking device described above, wherein the slide rail unlocking device is located between the upper slide rail and the lower slide rail, and the slide rail unlocking device is fixedly connected to the upper slide rail.

[0015] Advantages and beneficial effects of the present invention:

[0016] 1. The present invention adopts an independent locking pin design, and each locking pin can independently enter the groove of the lower slide rail, avoiding the risk of locking failure. In addition, through the matching design of the locking pin and the groove of the lower slide rail, a step adjustment of less than 10 mm can be achieved, thereby improving the accuracy of position adjustment and enhancing the comfort of the occupants.

[0017] 2. The slide rail unlocking device of the present invention is a double-sided locking pin arrangement. As a preferred example, there are three locking pins on each side. As the sliding position of the fixing pin in the oblong hole is different, the locking pin push plate on each side will push the corresponding two locking pins to lock, which can meet the locking strength requirements of all slide rails from low strength to high strength.

[0018] 3 The present invention has a simple structure, convenient operation, stable operation, and is suitable for all automobile hand-operated electric slide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the cooperation between the locking pin, the compression spring, the locking pin push plate and the locking pin intermediate fixing plate in the present invention;

[0021] Figure 3 It is a schematic diagram of the cooperation between the locking pin, the locking pin and the locking pin push plate in the present invention;

[0022] Figure 4 It is a schematic diagram of the cooperation between the unlocking piece, the unlocking shaft, the unlocking drive plate and the locking pin push plate in the present invention;

[0023] Figure 5 yes Figure 4 Exploded diagram of

[0024] Figure 6 It is an exploded schematic diagram of the locking pin side fixing plate and the locking pin middle fixing plate of the present invention;

[0025] Figure 7a It is a schematic diagram of the unlocking state after the present invention cooperates with the lower sliding rail;

[0026] Figure 7b is a cross-sectional view of the present invention in an unlocked state;

[0027] Figure 7c is a schematic diagram of the overall structure of the present invention in an unlocked state;

[0028] Figure 8a It is a schematic diagram of the present invention in a locked state after cooperating with the lower slide rail;

[0029] Figure 8b is a cross-sectional view of the present invention in a locked state;

[0030] Figure 8c It is a schematic diagram of the overall structure of the present invention in a locked state;

[0031] Fig. 9 It is an exploded view of the present invention cooperating with the upper slide rail;

[0032] Fig.10 It is a schematic diagram of the structure of the invention after being assembled with an upper slide rail and a lower slide rail.

[0033] Figure numerals: 1 upper slide rail, 2 lower slide rail, 3 slide rail unlocking device, 4 unlocking piece, 4-1 flange, 4-2 first through hole, 5 unlocking shaft, 5-1 unlocking shaft spline, 6 unlocking drive plate, 6-1 unlocking drive plate spline hole, 6-2 second through hole, 7 fixing pin, 8 locking pin push plate, 8-1 top plate, 8-1-1 claw, 8-1-2 first groove, 8-1-3 oblong hole, 8-2 side plate, 8-2-1 third through hole, 8-2- 2 locking pin arc, 8-3 arc-shaped connecting plate, 9 locking pin middle fixing plate, 9-1 second groove, 9-2 fourth through hole, 9-3 locking pin middle fixing plate circular hole, 10 locking pin, 10-1 locking pin shoulder, 11 compression spring, 12 locking pin side fixing plate, 12-1 fixing plate body, 12-2 fixing plate connecting plate, 12-3 upper slide rail connecting plate, 12-4 body through hole, 12-5 fixing plate through hole and 12-6 connecting plate through hole. DETAILED DESCRIPTION

[0034] The present invention is applicable to all automobile hand-operated electric slide rails. The present invention is described in detail below in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the following methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

[0035] It should be noted that in the description of the present invention, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", and "right" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0036] like Figure 1 As shown, a slide rail unlocking device 3 for a car seat includes an unlocking plate 4, an unlocking shaft 5, an unlocking drive plate 6, a locking pin push plate 8, a locking pin middle fixing plate 9, a locking pin 10, a compression spring 11 and a locking pin side fixing plate 12, as shown in FIG. Figure 1 , Figure 4 and Figure 5As shown, one end of the unlocking piece 4 has a flange 4-1, and the other end of the unlocking piece 4 has a first through hole 4-2. The top of the unlocking shaft 5 is stepped, and the top of the unlocking shaft 5 passes through the first through hole 4-2 and is fixedly connected to the unlocking piece 4. The bottom of the unlocking shaft 5 has an unlocking shaft spline 5-1. The unlocking drive plate 6 is a left-right symmetrical structure with horizontal sides of the middle protrusion. The middle protrusion has an unlocking drive plate spline hole 6-1, and the unlocking shaft spline 5-1 is fixedly connected to the unlocking drive plate 6 through the unlocking drive plate spline hole 6-1. The unlocking drive plate 6 has second through holes 6-2 on both sides, and both sides of the unlocking drive plate 6 are connected to the locking pin push plate 8 on the corresponding side through the second through holes 6-2 and the fixing pin 7.

[0037] like Figure 2-Figure 5 As shown, the locking pin push plate 8 is an integrated structure, including a top plate 8-1 and a side plate 8-2 in the shape of an inverted "6". The outer end of the top plate 8-1 is connected to the side plate 8-2 through an arc connecting plate 8-3, and the side plate 8-2 and the top plate 8-1 are arranged perpendicular to each other. An oblong hole 8-1-3 is processed on the end of the top plate 8-1 adjacent to the arc connecting plate 8-3, and the position of the oblong hole 8-1-3 corresponds to the position of the second through hole 6-2. A claw 8-1-1 is connected to the end of the top plate 8-1 away from the arc connecting plate 8-3. The locking pin push plate 8 is overlapped on the locking pin middle fixing plate 9 through the claw 8-1-1. One side of the claw 8-1-1 has a first groove 8-1-2. Both ends of the side plate 8-2 A locking pin arc 8-2-2 with a diameter smaller than that of the locking pin shoulder 10-1 is processed, and at least one third through hole 8-2-1 is also processed in the middle of the side plate 8-2. The diameter of the third through hole 8-2-1 is smaller than the diameter of the locking pin shoulder 10-1. Both ends of the fixing pin 7 are provided with fixing pin flat heads. The fixing pin 7 passes through the second through hole 6-2 on the unlocking drive plate 6 and the oblong hole 8-1-3 on the locking pin push plate 8, and the unlocking drive plate 6 and the locking pin push plate 8 are connected by the fixing pin flat heads at both ends of the fixing pin 7. The locking pin push plates 8 connected at both ends of the unlocking drive plate 6 are centrally symmetrically arranged, and the positions of the first groove 8-1-2 on the locking pin push plate 8 at the left end and the first groove 8-1-2 on the locking pin push plate 8 at the right end correspond to each other and cooperate with each other.

[0038] like Figure 1 , Figure 2 and Figure 6As shown, a locking pin intermediate fixing plate 9 parallel to the locking pin pushing plate 8 is arranged between the two locking pin pushing plates 8, and a second groove 9-1 is processed on the middle top of the locking pin intermediate fixing plate 9, and the length of the second groove 9-1 is not less than the total width after the locking pin pushing plates 8 on both sides cooperate with each other, and the locking pin pushing plates on both sides are overlapped on the second groove 9-1 through the clamping claw 8-1-1, and at least six fourth through holes 9-2 are processed below the second groove 9-1, and the six fourth through holes 9-2 respectively correspond to the positions of the third through holes 8-2-1 and the locking pin arc 8-2-2 on the locking pin pushing plates 8 on both sides of the locking pin intermediate fixing plate 9, and the locking pin 10 on the slide rail unlocking device 3 is arranged on both sides, and at least one locking pin 10 is arranged between each side of the locking pin intermediate fixing plate 9 and the locking pin pushing plate 8 on the corresponding side. There are three locking pins 10, and the positions of the locking pins 10 on both sides are cross-arranged. Each of the locking pins 10 has a locking pin shoulder 10-1, and each of the locking pins 10 is sleeved with a compression spring 11. One end of the compression spring 11 contacts the locking pin shoulder 10-1, and the other end of the compression spring 11 contacts the locking pin intermediate fixing plate 9. The head of each locking pin 10 has a taper, and the taper of the head of the locking pin 10 plays a guiding role. The head of the locking pin 10 passes through the third through hole 8-2-1 or the locking pin arc 8-2-2 on the locking pin push plate 8. Due to the action of the compression spring 11, the locking pin shoulder 10-1 is tightly attached to the side of the locking pin push plate 8. The tail of the locking pin 10 passes through the fourth through hole 9-2 and is connected to the locking pin intermediate fixing plate 9. The two ends of the locking pin intermediate fixing plate 9 are processed with locking pin intermediate fixing plate circular holes 9-3.

[0039] like Figure 1 and Figure 6 As shown, the outer sides of the two locking pin push plates 8 are each provided with a locking pin side fixing plate 12, the middle part of the locking pin side fixing plate 12 is a fixing plate body 12-1 protruding outward, the top of at least one side of the fixing plate body 12-1 is connected with an upper slide rail connecting plate 12-3, and the two sides of the fixing plate body are connected with fixing plate connecting plates 12-2 extending outward, and at least three main body through holes 12-4 are processed on the fixing plate body 12-1, and the positions of the three main body through holes 12-4 are the same as those of the fixing plate body 12-1. The position of the third through hole 8-2-1 on the locking pin push plate 8 or the locking pin arc 8-2-2 corresponds to the position of the fixed plate connecting plate 12-2, and a fixed plate through hole 12-5 is processed on the fixed plate connecting plate 12-2. The position of the fixed plate through hole 12-5 corresponds to the position of the circular hole 9-3 in the middle fixed plate of the locking pin. The fixed plate connecting plates 12-2 at both ends of the two locking pin side fixing plates 12 are connected to the middle fixed plate of the locking pin by screws, and a connecting plate through hole 12-6 is processed on the upper slide connecting plate 12-3.

[0040] like Fig. 9 and Fig.10 As shown, a slide rail mechanism includes an upper slide rail 1 and a lower slide rail 2, and also includes the slide rail unlocking device 3 mentioned above, the slide rail unlocking device 3 is located between the upper slide rail 1 and the lower slide rail 2, and the slide rail unlocking device 3 is fixedly connected to the upper slide rail 1 through the connecting plate through hole 12-6 on the upper slide plate connecting plate 12-3.

[0041] How it works

[0042] Unlocking process, such as Figure 7a-7c As shown, external force pushes the flange 4-1 on the unlocking piece 4 to make it rotate axially around the unlocking shaft 5. The rotation of the unlocking piece 4 drives the unlocking shaft 5 to rotate, and the rotation of the unlocking shaft 5 drives the unlocking driving plate 6 to rotate. At this time, the fixed pins 7 connected at both ends of the unlocking driving plate 6 also move in the oblong holes 8-1-3 on the locking pin push plate 8 toward the fixed connecting plate 12-2, thereby driving the locking pin push plates 8 at the left and right ends to move in the direction of the locking pin middle fixed plate 9. As the sliding position of the fixing pin 7 in the oblong hole 8-1-3 is different, the locking pin push plates 8 on both sides will push two of the locking pins 10 at the corresponding ends to move in the direction of the locking pin middle fixed plate 9. At this time, the compression spring 11 is compressed, and the locking pin 10 disengages from the groove of the lower slide rail. When the upper slide rail 1 is subjected to the driving force in the length direction, the upper slide rail can drive the seat to move in the front and rear directions relative to the lower slide rail fixed on the vehicle body floor.

[0043] Locking process, such as Figure 8a-8c As shown, when the external force pushing the unlocking piece 4 disappears, the compressed compression springs 11 on both sides begin to stretch, pushing the corresponding locking pins 10 and the locking pin push plates 8 on both sides to move away from the locking pin middle fixed plate 9. At this time, the fixing pins 7 at both ends of the unlocking drive plate 6 slide in the opposite direction in the oblong holes 8-1-3 on the locking pin push plate 8, thereby driving the unlocking drive plate 6, the unlocking shaft 5 and the unlocking piece 4 to rotate and return to the initial position. At the same time, the locking pins 10 on both sides can enter the corresponding grooves on the lower sliding rail in the matching position to realize the locking function.

Claims

1. A slide rail unlocking device (3) for a car seat, characterized in that: The invention comprises an unlocking plate (4), an unlocking shaft (5), an unlocking drive plate (6), a locking pin push plate (8), a locking pin middle fixing plate (9), a locking pin (10), a compression spring (11) and a locking pin side fixing plate (12), wherein the unlocking plate (4) is connected to the unlocking drive plate (6) via the unlocking shaft (5), both ends of the unlocking drive plate (6) are connected to the locking pin push plate (8) via a fixing pin (7), and a locking spring parallel to the locking pin push plate (8) is arranged between the two locking pin push plates (8). A locking pin middle fixing plate (9) is provided, and the same number of locking pins (10) are arranged between each side of the locking pin middle fixing plate (9) and the locking pin push plate (8) on the corresponding side, and the positions of the locking pins (10) on both sides are cross-arranged, and each locking pin (10) is sleeved with a compression spring (11), and the outer sides of the two locking pin push plates (8) are provided with locking pin side fixing plates (12), and the two ends of the two locking pin side fixing plates (12) are connected to the two ends of the locking pin middle fixing plate (9).

2. A slide rail unlocking device (3) for a car seat according to claim 1, characterized in that: The locking pin push plate (8) is an integrated structure, comprising a top plate (8-1) and a side plate (8-2) in an inverted "6" shape, the outer end of the top plate (8-1) is connected to the side plate (8-2) via an arc connecting plate (8-3), and the side plate (8-2) and the top plate (8-1) are arranged perpendicular to each other, an oblong hole (8-1-3) is processed on one end of the top plate (8-1) adjacent to the arc connecting plate (8-3), and the top plate (8-1) is away from the arc connecting plate (8-3). One end of the plate (8-3) is connected to a claw (8-1-1), the locking pin push plate (8) is overlapped on the locking pin middle fixed plate (9) through the claw (8-1-1), one side of the claw (8-1-1) is provided with a first groove (8-1-2), both ends of the side plate (8-2) are processed with locking pin arcs (8-2-2) for clamping the locking pin (10), and at least one third through hole (8-2-1) is processed in the middle of the side plate (8-2).

3. The slide rail unlocking device (3) for a vehicle seat according to claim 2, characterized in that: The top of the unlocking shaft (5) is stepped, and the bottom of the unlocking shaft (5) is provided with an unlocking shaft spline (5-1). The unlocking drive plate (6) is a left-right symmetrical structure with two horizontal sides of the middle protrusion. The middle protrusion is provided with an unlocking drive plate spline hole (6-1). The unlocking shaft spline (5-1) is fixedly connected to the unlocking drive plate (6) through the unlocking drive plate spline hole (6-1). The two sides of the unlocking drive plate (6) are provided with second through holes (6-2), and the position of the second through holes (6-2) corresponds to the position of the oblong hole (8-1-3). Both ends of the fixing pin (7) are provided with fixing pin flat heads. The fixing pin (7) passes through the second through hole (6-2) on the unlocking drive plate (6) and the oblong hole (8-1-3) on the locking pin push plate (8), and the unlocking drive plate (6) and the locking pin push plate (8) are connected through the fixing pin flat heads at both ends of the fixing pin (7).

4. The slide rail unlocking device (3) for a car seat according to claim 3, characterized in that: A second groove (9-1) is machined at the middle top of the locking pin intermediate fixing plate (9), the length of the second groove (9-1) being not less than the total width of the two locking pin push plates (8) after they cooperate with each other, at least six fourth through holes (9-2) are machined below the second groove (9-1), the six fourth through holes (9-2) respectively corresponding to the positions of the third through holes (8-2-1) and the locking pin arc (8-2-2) on the locking pin push plates (8) on both sides of the locking pin intermediate fixing plate (9), and the locking pin intermediate fixing plate (9) is provided with a plurality of locking pins. At least three locking pins (10) are arranged between each side of the intermediate fixing plate (9) and the locking pin push plate (8) on the corresponding side thereof, the head of the locking pin (10) passes through a third through hole (8-2-1) or a locking pin circular arc (8-2-2) on the locking pin push plate (8) to be connected to the locking pin push plate (8), the tail of the locking pin (10) passes through a fourth through hole (9-2) to be connected to the intermediate fixing plate (9) of the locking pin, and the two ends of the intermediate fixing plate (9) of the locking pin are processed with intermediate fixing plate circular holes (9-3).

5. A slide rail unlocking device (3) for a car seat according to any one of claims 1 to 4, characterized in that: The head of each locking pin (10) is tapered.

6. A slide rail unlocking device (3) for a car seat according to claim 5, characterized in that: Each locking pin (10) is provided with a locking pin shoulder (10-1), one end of the compression spring (11) is in contact with the locking pin shoulder (10-1), and the other end of the compression spring (12) is in contact with the locking pin intermediate fixing plate (9).

7. A slide rail unlocking device (3) for a car seat according to claim 6, characterized in that: One end of the unlocking piece (4) is provided with a flange (4-1), the other end of the unlocking piece (4) is provided with a first through hole (4-2), and the top of the unlocking shaft is fixedly connected to the unlocking piece (4) via the first through hole (4-2).

8. A slide rail unlocking device (3) for a vehicle seat according to claim 6 or 7, characterized in that: The middle part of the locking pin side fixing plate (12) is a fixing plate body (12-1) protruding outward, the top of at least one side of the fixing plate body (12-1) is connected to an upper slide rail connecting plate (12-3), and the two sides of the fixing plate body are connected to fixing plate connecting plates (12-2) extending outward, and at least three main body through holes (12-4) are processed on the fixing plate body (12-1), and the positions of the main body through holes (12-4) correspond to the positions of the third through holes (8-2-1) on the locking pin push plate (8) or the locking pin arc (8-2-2), and the fixing plate connecting plate (12-2) is processed with a fixing plate through hole (12-5), and the position of the fixing plate through hole (12-5) corresponds to the position of the locking pin middle fixing plate circular hole (9-3), and the upper slide rail connecting plate (12-3) is processed with a connecting plate through hole (12-6).

9. A slide rail mechanism, comprising an upper slide rail (1) and a lower slide rail (2), characterized in that: It also comprises a slide rail unlocking device (3) according to any one of claims 1 to 8, wherein the slide rail unlocking device (3) is located between the upper slide rail (1) and the lower slide rail (2), and the slide rail unlocking device (3) is fixedly connected to the upper slide rail (1).

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