Sliding rail and seat

Abstract

The invention discloses a sliding rail and a seat, the sliding rail comprises an outer sliding rail, an inner sliding rail, an operating lever and an unlocking piece, the outer sliding rail is provided with a limiting plate, the unlocking piece is rotatably connected with the inner sliding rail, the unlocking piece is provided with a limiting part and a pulling part, the limiting part can abut against the limiting plate when the inner sliding rail slides to the tail end of an EZ stroke, and the pulling part can pull the limiting part to move to the limiting plate. The inner sliding rail is prevented from entering the EZ stroke of the outer sliding rail by mistake; when the inner sliding rail needs to enter the EZ stroke of the outer sliding rail, the pull wire acts to lay down the backrest, meanwhile, the pull wire lifts the pull part upwards, the unlocking piece rotates, limiting of the limiting plate on the limiting part is relieved, the inner sliding rail can slide towards the EZ stroke, meanwhile, the pull part pushes the operating rod to move upwards, locking of the lock clamp and the lock teeth is relieved, and the inner sliding rail slides into the EZ stroke of the outer sliding rail. In the sliding process of the inner sliding rail in the EZ stroke, the limiting plate always applies pressing force to the limiting part, the unlocking piece is prevented from rotating reversely, the operating rod is always lifted upwards, the inner sliding rail and the outer sliding rail are kept unlocked, and the inner sliding rail smoothly slides in the outer sliding rail.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a slide rail and a seat. Background Art

[0002] The middle row seats of a vehicle need to take into account two travels, one is the regular travel and the other is the EZ (easyentry) travel. The regular travel is when there are passengers in the middle row seats, and the passengers use the joystick to adjust the front and rear position of the middle row seats to improve the riding experience and comfort of the passengers. The EZ travel is when the passengers need to enter the rear seats behind the middle row seats, and the middle row seats need to move forward more to ensure that there is enough space between the middle row seats and the rear seats for passengers to pass through. The EZ travel is located in front of the regular travel and is in the same line as the regular travel.

[0003] In the related technology, there is a lack of limit between the regular stroke and the EZ stroke. When the passenger adjusts the forward position of the middle row seat through the joystick, it is easy to slide into the EZ stroke. The passenger can only adjust it backward by himself to make the middle row seat return to the regular stroke again, affecting the riding experience.

[0004] Therefore, how to prevent the middle row seats from accidentally entering the EZ travel to improve the riding experience has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The present application proposes a slide rail to prevent the middle row seats from mistakenly entering the EZ travel path, thereby improving the riding experience. The present application also proposes a seat.

[0006] In order to achieve the above object, the present application provides a slide rail, including an inner slide rail and an outer slide rail.

[0007] Also includes:

[0008] A limit plate is mounted on the outer slide rail, and a rear end surface of the limit plate is flush with a rear end of the EZ stroke of the outer slide rail;

[0009] The unlocking piece is rotatably connected to the inner slide rail.

[0010] The first end of the unlocking piece has a limiting portion, which is used to abut against the rear end surface of the limiting plate when the inner slide rail slides to the end of the EZ stroke to limit the inner slide rail.

[0011] The second end of the unlocking piece has a pulling portion connected to a pull wire for folding the backrest, and the unlocking piece can rotate under the action of the pull wire to release the limit between the limit portion and the limit plate.

[0012] At the same time, the pulling portion can push the operating rod to be lifted synchronously with the unlocking piece to release the lock between the inner slide rail and the outer slide rail, and the limiting plate applies downward pressure to the limiting portion to keep the inner slide rail and the outer slide rail unlocked when the inner slide rail slides in the EZ stroke.

[0013] Preferably, in the above-mentioned slide rail, the unlocking piece is rotatably connected to the inner slide rail via a hinge shaft, and the hinge shaft is a hinge shaft used to realize the rotatable connection between the operating lever and the inner slide rail.

[0014] Preferably, in the above-mentioned slide rail, a torsion spring is sleeved on the hinge shaft, and the torsion spring is used to apply downward pressure to the unlocking piece.

[0015] Preferably, in the above-mentioned slide rail, the unlocking piece is arranged to fit the side wall of the inner slide rail, the pulling portion is located on the side of the unlocking piece away from the inner slide rail, and the limiting portion is located on the side of the unlocking piece close to the inner slide rail.

[0016] Preferably, in the above-mentioned slide rail, the pulling part is a strip plate, the strip plate has a mounting hole for mounting the pull wire, and a slide groove communicating with the mounting hole is formed at the free end of the strip plate.

[0017] Preferably, in the above-mentioned slide rail, the limiting portion is an arc-shaped plate, and the arc-shaped plate is bent upward from the lower end of the unlocking piece;

[0018] The limiting plate is an L-shaped plate, the vertical plate of the limiting plate is connected to the outer slide rail, the horizontal plate of the limiting plate is pressed downwardly into engagement with the limiting portion, and one end of the horizontal plate away from the vertical plate is in a downwardly bent arc.

[0019] Preferably, in the above-mentioned slide rail, the front end of the limit plate is at least flush with the front end of the EZ stroke.

[0020] Preferably, in the above-mentioned slide rail, the limit plate is a rigid plate, and the limit plate is welded to the outer slide rail;

[0021] And / or, the unlocking piece is a rigid piece.

[0022] A seat comprises at least two slide rails arranged in parallel, at least one of the slide rails is the slide rail recorded in any one of the above solutions.

[0023] The slide rail provided in the embodiment of the present application includes an outer slide rail, an inner slide rail, a joystick and an unlocking piece. The inner slide rail and the outer slide rail are slidably matched. A limiting plate is provided on the outer slide rail. The rear end surface of the limiting plate is flush with the rear end of the EZ stroke. The unlocking piece is rotatably connected to the inner slide rail, and the unlocking piece has a limiting portion and a pulling portion. When the inner slide rail slides from the normal stroke of the outer slide rail to the end of the EZ stroke, the limiting portion of the unlocking piece can abut against the limiting plate to prevent the inner slide rail from mistakenly entering the EZ stroke of the outer slide rail, thereby improving the riding experience; when the inner slide rail needs to enter the EZ stroke of the outer slide rail, the wire is pulled to lay down the backrest, and the pulling portion rotates upward under the action of the wire, and the limiting portion of the unlocking piece rotates downward to the bottom of the limiting plate, releasing the limit of the limiting plate on the limiting portion, so that the inner slide rail can slide toward the EZ stroke. At the same time, the pulling portion pushes the operating lever to move upward, and the locking card moves downward to release the lock of the locking card and the locking tooth, and the inner slide rail slides into the EZ stroke of the outer slide rail. In the process of the inner slide rail sliding in the EZ stroke, the limiting plate always applies a pressing force to the limiting portion to prevent the unlocking piece from rotating in the opposite direction, and the operating lever is always in an upward state, and the inner slide rail and the outer slide rail remain unlocked. The slide rail disclosed in this solution can prevent the middle row seats from accidentally entering the EZ stroke, thereby improving the riding experience. At the same time, the backrest is folded down and linked with the inner slide rail in the EZ stroke, which can prevent the seats from being used incorrectly in the EZ stroke, improve the safety of seat use, and improve the riding experience.

[0024] The present invention also discloses a seat, comprising at least two parallel slide rails, at least one of which is the slide rail described in the above-mentioned embodiment. Since the slide rail has the above-mentioned technical effect, the seat having the slide rail also has the same technical effect, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0026] Figure 1 It is a structural schematic diagram of the slide rail of the present application;

[0027] Figure 2 is a side view of the slide rail of the present application;

[0028] Figure 3 It is a partial structural schematic diagram of the slide rail of the present application;

[0029] Figure 4It is a partial structural schematic diagram of the slide rail of the present application;

[0030] Figure 5 It is a structural schematic diagram of the limiting plate of the present application limiting the limiting part;

[0031] Figure 6 It is a structural schematic diagram of the limiting part of the present application being located below the limiting plate.

[0032] The accompanying drawings are as follows:

[0033] 100-inner slide rail; 200-outer slide rail; 210-locking tooth; 220-limiting plate; 300-operating lever; 310-locking card; 400-unlocking piece; 410-limiting part; 420-pulling part; 500-pull wire; 600-hinge shaft; 700-torsion spring. DETAILED DESCRIPTION

[0034] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0035] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0036] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0037] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0038] See also Figure 1-Figure 6 .

[0039] Some embodiments of the present application disclose a slide rail, including an outer slide rail 200 and an inner slide rail 100. The inner slide rail 100 is located inside the outer slide rail 200. The inner slide rail 100 and the outer slide rail 200 are slidably matched. The sliding direction of the inner slide rail 100 is the length direction of the outer slide rail 200. The outer slide rail 200 has a locking tooth 210.

[0040] A joystick 300 is provided on the inner slide rail 100 , and the joystick 300 is rotatably connected to the inner slide rail 100 . The joystick 300 rotates up and down around the connection position between the joystick 300 and the inner slide rail 100 , and the rotation axis of the joystick 300 is perpendicular to the length direction of the inner slide rail 100 .

[0041] like Figure 1 and Figure 2 As shown, along the length direction of the outer slide rail 200, the joystick 300 has a certain length, the first end of the joystick 300 in the length direction is rotatably connected to the inner slide rail 100, the second end of the joystick 300 in the length direction extends in the direction of the EZ stroke, and the first end and the second end of the joystick 300 in the length direction are respectively located on both sides of the rotation axis of the joystick 300.

[0042] The joystick 300 has a lock card 310, which is fixedly connected to the first end of the joystick 300. The lock card 310 rotates synchronously with the joystick 300, but in opposite directions. Specifically, when the joystick 300 rotates upward, the lock card 310 moves downward, and when the joystick 300 rotates downward, the lock card 310 moves upward.

[0043] When in use, the operating lever 300 is lifted up, the locking card 310 moves downward, the locking card 310 slides out of the locking tooth 210, the locking cooperation between the locking card 310 and the locking tooth 210 is released, and the inner slide rail 100 can slide on the outer slide rail 200; the operating lever 300 is rotated downward, the locking card 310 moves upward, the locking card 310 enters the locking tooth 210, and the locking cooperation between the locking card 310 and the locking tooth 210 is realized, and the inner slide rail 100 cannot slide on the outer slide rail 200.

[0044] In this solution, the passenger actively lifts the second end of the operating lever 300 to release the lock between the lock card 310 and the lock tooth 210, thereby enabling the inner slide rail 100 to slide within the normal travel of the outer slide rail 200; the passenger releases the second end of the operating lever 300, the operating lever 300 moves downward, and the lock card 310 and the lock tooth 210 lock and cooperate, thereby enabling the inner slide rail 100 to be locked within the normal travel of the outer slide rail 200.

[0045] The slide rail disclosed in this solution also includes a limit plate 220 and an unlocking piece 400. The limit plate 220 and the unlocking piece 400 cooperate to limit the inner slide rail 100 in the EZ stroke, and at the same time, the inner slide rail 100 and the outer slide rail 200 can remain unlocked when the inner slide rail 100 moves in the EZ stroke.

[0046] like Figure 1 As shown, the limit plate 220 is disposed on the outer slide rail 200, and the rear end surface of the limit plate 220 is flush with the rear end of the EZ stroke;

[0047] The unlocking piece 400 is rotatably connected to the inner slide rail 100, and the first end of the unlocking piece 400 has a limiting portion 410, and the second end of the unlocking piece 400 has a pulling portion 420, wherein the limiting portion 410 is used to abut against the rear end surface of the limiting plate 220 when the inner slide rail 100 slides to the end of the EZ stroke to limit the inner slide rail 100, and the pulling portion 420 is connected to the pull wire 500 for folding the backrest, and when the pull wire 500 is pulled up to fold the backrest, the pull wire 500 simultaneously pulls up the pulling portion 410. 20, the unlocking piece 400 rotates, the limiting part 410 rotates downward, the height of the limiting part 140 is lower than the height of the limiting plate 220, and the limiting plate 220 releases the limiting part 140, so that the inner slide rail 100 can slide to the EZ stroke of the outer slide rail 200. At the same time, the pulling part 420 pushes the operating rod 300 to be lifted synchronously with the unlocking piece 400, and the lock between the inner slide rail 100 and the outer slide rail 200 is released, so that the inner slide rail 100 can slide into the EZ stroke of the outer slide rail 200. When the inner slide rail (100) slides in the EZ stroke, the limiting plate 220 always applies downward pressure to the limiting part 410, so that the inner slide rail 100 and the outer slide rail 200 remain unlocked.

[0048] It should be noted here that the first end of the unlocking piece 400 is an end of the unlocking piece 400 away from the EZ stroke, and the second end of the unlocking piece 400 is an end of the unlocking piece 400 close to the EZ stroke.

[0049] In this solution, the EZ stroke is located in front of the conventional stroke, the end of the EZ stroke connected to the conventional stroke is the rear end of the EZ stroke, and the end of the EZ stroke away from the conventional stroke is the front end of the EZ stroke. In this solution, the front and back are based on the direction facing the passenger when the passenger is in the seat as the front, and the direction facing the passenger's back as the rear.

[0050] In this solution, the unlocking piece 400 is linked with the pull wire 500 for folding down the backrest. Only when the pull wire 500 is moved to fold down the backrest can the limit plate 220 release the limit of the limit part 410 of the unlocking piece 400. In other words, in order to realize the sliding of the inner slide rail 100 in the EZ stroke, the backrest must be folded down, thereby effectively avoiding the accidental use of the seat in the EZ stroke.

[0051] The length of the limiting plate 220 can be very short so as to limit the limiting portion 410 .

[0052] The length of the limit plate 220 can also be longer. After the height of the limit part 410 is made lower than the height of the limit plate 220 by rotating the unlocking piece 400, during the sliding of the inner slide rail 100 along the EZ stroke, the limit part 410 is always located below the limit plate 220, and the limit plate 220 always applies downward pressure to the limit part 410, ensuring that the lock card 310 cannot cooperate with the lock tooth 210 at all times. This solves the problem in the related art that the lock card 310 is always in contact with the outer slide rail 200 during the sliding of the inner slide rail 100 in the EZ stroke, resulting in serious wear of the lock card 310 and the outer slide rail 200. At the same time, it can prevent the seat from being used incorrectly in the EZ stroke.

[0053] The length direction of the limit plate 220 is consistent with the length direction of the outer slide rail 200. In some embodiments, the rear end of the limit plate 220 is flush with the rear end of the EZ stroke, and the front end of the limit plate 220 is at least flush with the front end of the EZ stroke.

[0054] Since different types of slide rails have different EZ strokes, in the related art, each type of slide rail needs to correspond to a set of molds, which increases the production cost of the slide rail. In this solution, the length of the EZ stroke can be limited by the length of the limit plate 220, and different types of slide rails can use the same length. The limit plates 220 of different lengths are used to meet the requirements of different types of slide rails for EZ stroke, thereby reducing the production cost of the slide rail.

[0055] In some embodiments, the limiting plate 220 is disposed on the inner side of the outer slide rail 200 , and the inner side of the outer slide rail 200 is a side of the outer slide rail 200 facing the adjacent outer slide rail 200 .

[0056] In some embodiments, the unlocking piece 400 is rotatably connected to the inner slide rail 100 via a hinge shaft 600 , and the hinge shaft 600 is a hinge shaft 600 used to realize the rotatable connection between the joystick 300 and the inner slide rail 100 .

[0057] The unlocking piece 400 and the operating lever 300 are connected to the inner slide rail 100 via the same hinge shaft 600, and no additional components are required, which simplifies the structure of the slide rail and reduces the manufacturing cost of the slide rail.

[0058] In some embodiments, the unlocking piece 400 is rotatably connected to the operating rod 300 or the inner slide rail 100 via another hinge shaft, and the axis of the hinge shaft of the unlocking piece 400 is parallel to the axis of the hinge shaft of the operating rod 300 .

[0059] The unlocking piece 400 rotates upward under the action of the pull wire 500. After the position adjustment of the inner slide rail 100 is completed, the inner slide rail 100 needs to slide out of the EZ stroke and enter the normal stroke. At this time, the unlocking piece 400 needs to move downward to reset to the initial position, and the limit part 410 returns to a height that can cooperate with the limit plate 220 for limiting.

[0060] In order to ensure the reliability of the reset of the unlocking piece 400, the present solution is provided with a torsion spring 700 on the hinge shaft 600, the first end of the torsion spring 700 is fixedly connected to the inner slide rail 100, and the second end of the torsion spring 700 is connected to the unlocking piece 400. The torsion spring 700 is used to apply a downward pressing force to the unlocking piece 400 to ensure that the unlocking piece 400 is reset to the initial position.

[0061] The hinge shaft 600 is also provided with a torsion spring for applying a downward pressing force to the operating rod 300, one end of which is fixedly connected to the inner slide rail 100, and the other end of which is connected to the operating rod 300. Two torsion springs are arranged in parallel on the hinge shaft 600.

[0062] It should be noted here that when the inner slide rail 100 is located in the normal stroke of the outer slide rail 200, the second end of the operating lever 300 is pulled to rotate upward, the unlocking piece 400 does not rotate synchronously with the operating lever 300, and the torsion spring of the operating lever 300 is squeezed; when the inner slide rail 100 needs to enter the EZ stroke of the outer slide rail 200, the unlocking piece 400 drives the operating lever 300 to rotate upward synchronously under the action of the pull wire 500, and the torsion spring 700 of the unlocking piece 400 and the torsion spring of the operating lever 300 are both squeezed.

[0063] The component used to realize the reset of the unlocking piece 400 is not limited to a torsion spring, but may also be a tension spring.

[0064] In some embodiments, the limiting portion 410 is an arc-shaped plate, which is bent upward from the lower end of the unlocking piece 400. The arc-shaped plate has a certain height in the up-down direction, which can increase the matching area between the limiting portion 410 and the limiting plate 220 to a certain extent, and improve the reliability of the matching between the limiting portion 410 and the limiting plate 220. The distance between the free end of the arc-shaped plate that is not connected to the unlocking piece 400 and the unlocking piece 400 can be greater than the width of the limiting plate 220 along the length direction perpendicular to the outer slide rail 200, so as to improve the reliability of the matching between the limiting portion 410 and the limiting plate 220.

[0065] In some embodiments, the limiting portion 410 is a flat plate, which is arranged in a direction perpendicular to the plane where the unlocking piece 400 is located, or the flat plate is arranged obliquely upward from the lower end of the unlocking piece 400 .

[0066] In some embodiments, the limiting portion 410 is a limiting block, and the cross-section of the limiting block along a direction perpendicular to the plane where the unlocking piece 400 is located is a polygon.

[0067] The limiting portion 410 is not limited to the above embodiment, and may also be in other forms, which are not specifically limited here.

[0068] The unlocking piece 400 is arranged to fit the side wall of the inner slide rail 100 , the pulling portion 420 is located on a side of the unlocking piece 400 away from the inner slide rail 100 , and the limiting portion 410 is located on a side of the unlocking piece 400 close to the inner slide rail 100 .

[0069] In this solution, the limiting portion 410 and the pulling portion 420 are both protruding from the plane where the unlocking piece 400 is located, and the limiting portion 410 and the pulling portion 420 are respectively located on both sides of the plane where the unlocking piece 400 is located, wherein the limiting portion 410 is located on the side of the unlocking piece 400 close to the inner slide rail 100, and the pulling portion 420 is located on the side of the unlocking piece 400 close to the inner slide rail 100, and the limiting portion 410 and the pulling portion 420 are both located at the lower end of the unlocking piece 400.

[0070] In this solution, the limiting portion 410 and the pulling portion 420 of the unlocking piece 400 are respectively arranged close to the components cooperating therewith, so as to reduce the size of the unlocking piece 400 in a direction perpendicular to the plane where the unlocking piece 400 is located.

[0071] In some embodiments, the pulling portion 420 is a plate-like structure protruding from the plane where the unlocking piece 400 is located, and a mounting hole for cooperating with the pull wire 500 is provided on the pulling portion 420 .

[0072] like Figure 3 As shown, a slide groove connected to the mounting hole is provided on the pulling portion 420, and the pull wire 500 slides into the mounting hole through the slide groove, and the fixed head at the end of the pull wire 500 is clamped in the mounting hole.

[0073] The angle between the pulling portion 420 of the plate-like structure and the plane where the unlocking piece 400 is located is 80°-90°, and the pulling portion 420 of the plate-like structure can be tilted downward or upward relative to the horizontal plane.

[0074] like Figure 5 and Figure 6 As shown, the rotational connection position between the unlocking piece 400 and the operating rod 300 is close to the limiting portion 410 .

[0075] During the seat adjustment process, the collision force between the limiting portion 410 of the unlocking piece 400 and the limiting plate 220 is relatively large. Preferably, in this solution, the limiting plate 220 and the unlocking piece 400 are both made of rigid materials to extend the service life of the unlocking piece 400 and the limiting plate 220. In some embodiments, the limiting plate 220 and the unlocking piece 400 are made of steel plates, and the limiting portion 410 and the pulling portion 420 of the unlocking piece 400 are integrally bent and formed with the unlocking piece 400.

[0076] Optionally, a buffer layer may be provided on the contact surface between the unlocking piece 400 and the limiting plate 220 to reduce noise when the unlocking piece 400 collides with the limiting plate 220 .

[0077] In order to ensure the connection strength between the limiting plate 220 and the outer slide rail 200 , in this solution, the limiting plate 220 and the outer slide rail 200 are welded together.

[0078] The present invention also discloses a seat, comprising at least two parallel slide rails, at least one of which is the slide rail described in the above-mentioned embodiment. Since the slide rail has the above-mentioned technical effect, the seat having the slide rail also has the same technical effect, which will not be described in detail here.

[0079] In some embodiments, the seat has two slide rails, at least one of which is the slide rail described in the above solution. Preferably, both slide rails are the slide rails described in the above solution, and the joysticks 300 of the two slide rails are connected by a crossbar, and the two joysticks 300 can be operated simultaneously by pulling the crossbar.

[0080] The seats disclosed in this solution are not only suitable for middle row seats, but also for seats in other positions.

[0081] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A slide rail, characterized in that: It comprises an inner slide rail (100) and an outer slide rail (200), Also includes: A limit plate (220) is mounted on the outer slide rail (200), and a rear end surface of the limit plate (220) is flush with a rear end of an EZ stroke of the outer slide rail (200); The unlocking piece (400) is rotatably connected to the inner slide rail (100). The first end of the unlocking piece (400) has a limiting portion (410) for abutting against the rear end surface of the limiting plate (220) when the inner slide rail (100) slides to the end of the EZ stroke, so as to limit the inner slide rail (100). The second end of the unlocking piece (400) has a pulling portion (420) connected to a pull wire (500) for folding down the backrest, and the unlocking piece (400) can rotate under the action of the pull wire (500) to release the limit between the limit portion (410) and the limit plate (220). At the same time, the pulling portion (420) is capable of pushing the operating lever (300) to be lifted synchronously with the unlocking piece (400) to release the lock between the inner slide rail (100) and the outer slide rail (200), and the limiting plate (220) applies downward pressure to the limiting portion (410) to keep the inner slide rail (100) and the outer slide rail (200) unlocked when the inner slide rail (100) slides in the EZ stroke.

2. The slide rail according to claim 1, characterized in that: The unlocking piece (400) is rotatably connected to the inner slide rail (100) via a hinge shaft (600), and the hinge shaft (600) is a hinge shaft (600) used to realize the rotatable connection between the operating lever (300) and the inner slide rail (100).

3. The slide rail according to claim 2, characterized in that: A torsion spring (700) is sleeved on the hinge shaft (600), and the torsion spring (700) is used to apply downward pressure to the unlocking piece (400).

4. The slide rail according to claim 1, characterized in that: The unlocking piece (400) is arranged to fit the side wall of the inner slide rail (100), the pulling portion (420) is located on a side of the unlocking piece (400) away from the inner slide rail (100), and the limiting portion (410) is located on a side of the unlocking piece (400) close to the inner slide rail (100).

5. The slide rail according to claim 1, characterized in that: The pulling portion (420) is a strip plate having a mounting hole for mounting the pull wire (500), and a sliding groove communicating with the mounting hole is provided at a free end of the strip plate.

6. The slide rail according to claim 1, characterized in that: The limiting portion (410) is an arc-shaped plate, and the arc-shaped plate is bent upward from the lower end of the unlocking piece (400); The limiting plate (220) is an L-shaped plate, the vertical plate of the limiting plate (220) is connected to the outer slide rail (200), the horizontal plate of the limiting plate (220) is pressed downwardly into engagement with the limiting portion (410), and one end of the horizontal plate away from the vertical plate is in a downwardly bent arc shape.

7. The slide rail according to claim 1, characterized in that: The front end of the limiting plate (220) is at least flush with the front end of the EZ stroke.

8. The slide rail according to claim 1, characterized in that: The limiting plate (220) is a rigid plate, and the limiting plate (220) is welded to the outer slide rail (200); And / or, the unlocking piece (400) is a rigid piece.

9. A seat, characterized in that: It comprises at least two slide rails arranged in parallel, at least one of which is the slide rail according to any one of claims 1-8.

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