WO2012142800A1

WO2012142800A1 - Seat slide rail

Info

Publication number: WO2012142800A1
Application number: PCT/CN2011/077430
Authority: WO
Inventors: 颜明; 张寒情; 张翱; 彭巧云; 张文杰; 陈靖秋; 彭颀
Original assignee: 湖北寒桦科技有限责任公司
Priority date: 2011-04-18
Filing date: 2011-07-21
Publication date: 2012-10-26
Also published as: AU2011226990B8; AU2011226990B2; KR101278209B1; AU2011226990A8; KR20120128080A; CN102180108B; CN102180108A; AU2011226990A1

Abstract

A seat slide rail comprising: an inner slideway (10); an outer slideway (20) sliding in harmony with the inner slideway (10); a retainer assembly (40) having wheels and provided between the inner slideway (10) and the outer slideway (20); a locking assembly (30) provided in a chamber of the inner slideway (10); a locking piece (31) of the locking assembly hinged at the middle portion to a side wall of the inner slideway (10); one terminal of the locking piece (31) having a lock fitting part (312) protruding perpendicularly from an opening arranged in the side wall of inner slideway (10); along the longitudinal direction of the slide rail, the lock fitting part is provided with lock holes or lock teeth, the outer slideway (20) having lock teeth matching the lock holes on the lock fitting part (312) or lock holes matching the lock teeth on the lock fitting part (312); the lock teeth or lock holes on the lock fitting part (312) or the outer slideway (20) are of a plurality; the locking piece (31) turns on the hinge point between said piece and the inner slideway (10), thereby locking a plurality of corresponding locations between the inner slideway (10) and the outer slideway (20); an elastic part providing a pre-locking force is located between the locking piece (31) and the inner slideway (10). The present invention features a small exterior size and low manufacturing costs, and can be applied on various types of seats.

Description

The present application claims priority to Chinese Patent Application No. 201110096753.3, entitled "Seat Slides", filed on April 18, 2011, the entire contents of in. Technical field

The present invention relates to a technique for adjusting the front and rear position of a seat, and more particularly to a seat slide. Background technique

The seat rails are used to connect the seat to the car body. At present, the driving position and the co-pilot position provided in the front row of the car can mostly move the seat in the front-rear direction according to the needs of the occupant to enhance the comfort of the seat. Especially for the driver, the front and rear positions of the seat can be adjusted according to the driver's body condition to facilitate manipulation of the steering wheel, the pedal and the shift lever.

In the prior art, the adjusting device of the seat rail mainly adopts the stepped sliding adjustment of the locking pin and the lock body structure, and can realize the stepwise adjustment of the movement of the seat in the front-rear direction, so that the seat can be quickly adjusted to any one of the locks. position. From the point of view of overall performance, the device is reliable in locking and stable, and the seat does not shift or slip during the long-term driving of the car.

However, due to its own structural principle, the existing stepped sliding lock adjustment device has the problems of complicated structure, large volume of the locking mechanism, unsmooth sliding, and high cost.

In view of this, it is urgent to optimize the design of the above-mentioned seat rails to overcome the above-mentioned drawbacks of the prior art. Summary of the invention

In view of the above drawbacks, the technical problem to be solved by the present invention is to provide a structurally optimized seat rail to overcome the above-mentioned drawbacks of the prior art and to improve the comfort of the seat.

The seat rail provided by the invention comprises:

An inner slide for connecting the seat base;

An outer slideway for slidingly engaging the inner slide of the vehicle body bottom plate;

a cage assembly having rollers disposed between the inner slide and the outer slide;

Also included is a lock assembly built into the cavity of the inner slide, the lock assembly comprising: a lock card, wherein a middle portion is hinged to a side wall of the inner slide, and one end of the lock card has a locking engagement portion extending laterally from an opening on a side wall of the inner slide; along the slide rail The locking engagement portion has a locking hole or a locking tooth, and the outer sliding rail has a locking tooth or a locking engagement portion adapted to the locking hole on the locking engagement portion a locking hole corresponding to the locking tooth; a plurality of locking teeth or locking holes on the locking engagement portion or the outer slide, and the locking card between the locking device and the inner slide Hinge rotation to lock a plurality of relative positions between the inner slide and the outer slide; and

An elastic member that provides a locking preload is disposed between the lock card and the inner slide.

Preferably, the locking mating portions have locking holes on both sides thereof, and the outer sliding rails have a plurality of matching downwardly extending locking teeth on both sides.

Preferably, the locking holes on the locking engagement portion are disposed in plurality along the longitudinal direction of the slide rail. Preferably, the upper surface of the locking mating portion is provided with a limiting slot disposed along the length of the sliding rail, and the elastic member is specifically fixedly connected to the inner slide rail at one end and the other end is disposed in the limiting slot. Shrapnel inside.

Preferably, the locking assembly further includes an operating rod, one end of which is connected to the other end of the lock card, and the other end of the operating rod extends from the cavity of the inner slide, the operating rod can be driven The lock card is rotated about the hinge point with respect to the inner slideway, and the corresponding lock hole is separated from the lock tooth to unlock.

Preferably, the operating rod has an axially extending surface extending outwardly; the locking assembly further includes a spring piece that is fixed at one end to the inner slide rail and the other end is folded back and engaged with the limiting surface. .

Preferably, the outer slide has a U-shaped cross section as a whole, and the edges of the two side walls are bent inwardly and then bent downward to form a symmetrical arrangement of the receiving portion for accommodating the retainer assembly; The cross section of the inner slide is generally "several" in shape, and the edges of the two side walls are bent outward and then bent upward, and cooperate with the rollers on the cage assembly.

Preferably, along the longitudinal direction of the slide rail, the upper and lower rows of rollers are disposed on the retainer assembly, and the two rows of rollers are respectively disposed at upper and lower outer corners of the receiving portion.

Preferably, a bushing is disposed between the operating rod and the inner slide. Preferably, the inner slide and the outer slide are correspondingly provided with a limit projection to limit the limit working position of the inner slide relative to the outer slide.

The seat with the seat rail of the present invention is fixedly connected to the seat and the vehicle body bottom plate after the assembly is completed, so as to realize the front-rear displacement between the seat and the vehicle body bottom plate. The locking assembly of the seat rail provided by the invention is disposed in the cavity of the inner slide, and the lock card is hinged to the side wall of the inner slide, and the locking engagement portion of the lock card extends from the side wall of the inner slide After the exit, the outer slide rail cooperates with the outer slide rail to realize the lock; as the lock card rotates relative to the inner slide rail, the lock hole and the lock tooth respectively disposed on the two can be engaged and unlocked at the two working positions. Switching between them to achieve locking of multiple relative positional relationships between the inner slide and the outer slide. At the same time, the solution utilizes the locking pre-tightening force provided by the elastic member, so that the locking hole and the locking tooth in the normal state are in the meshing locking state. That is to say, in the normal state, the meshing lock state, when it is necessary to adjust the front and rear position of the seat, the lock card is rotated around the inner slide to the lock hole and the lock tooth is in the disengaged unlock state, in this state, the inner slide The front slide can be slid to the ideal relative position with respect to the outer slide. After the corresponding lock hole and the lock tooth are aligned, the lock card rotates in the opposite direction of the inner slide to realize the meshing lock, so that the inner slide can be fixed. The relative position between the outer slides. Compared with the prior art, the solution has the characteristics of simple structure and reliable operation. On the one hand, the locking assembly is placed in the cavity of the inner slide, effectively utilizing the inner space of the sliding rail, reducing the outer shape of the locking mechanism, thereby reducing the manufacturing cost of the product and enhancing its matching with various seats. Generality; on the other hand, the locking assembly does not interfere with the cage assembly in space, and ensures smooth sliding displacement between the inner slide and the outer slide.

In a preferred embodiment of the invention, one end of the lever is coupled to the lock card and the other end extends from the cavity of the inner slide. The operator applies force to the operating rod to drive the lock card to rotate relative to the inner slide around the hinge point, and overcomes the pre-tightening force of the elastic member during the rotation until the matching locking hole is separated from the locking tooth to unlock; After adjusting the front and rear position of the seat, release the operating lever, and the lock card can return to the meshing locking working position under the action of the elastic member. Has good operability.

The operating lever of another preferred embodiment of the present invention can be assembled with the lock card after the rail body is assembled. One end of the operating rod is inserted into the outer side of the inner slide, and the meandering and bending portion of the elastic piece is pushed outward to generate elastic deformation until the limiting surface of the operating rod reaches the predetermined position, and the elastic piece is reset, and the end surface of the elastic piece is folded back. Match the limit surface of the lever to prevent the lever from coming out abnormally Inner slide. The split type design can reduce the outer dimensions of the main body of the slide rail, and is easy to assemble. After the seat is assembled or even after the assembly of the whole vehicle is completed, the operating rod is inserted, which has better assembly processability.

The seat rail provided by the present invention is suitable for various seats that need to adjust the front and rear positions of the adjustment seat, and is particularly suitable for a car seat. DRAWINGS

1 is a schematic axial view of a seat rail according to a specific embodiment;

Figure 2 is a cross-sectional view taken along line A-A of Figure 1;

Figure 3 is an exploded view of the assembly of the seat rail shown in Figure 1;

Figure 4 is a schematic view showing the assembly between the inner slide and the lock assembly formed on the opposite side of the viewing angle of Figure 3;

Figure 5 is a schematic view showing the axial assembly of the two elastic pieces, the lock card and the operating rod in the specific embodiment;

Figure 6 is an exploded view of the assembly of the components of Figure 5;

Figure 7 is a schematic cross-sectional view of the seat rail in a normal state;

Figure 8 is a schematic cross-sectional view of the seat rail in an unlocked state.

In the picture:

Inner slide 10, hole 11, hole 12, opening 13, protrusion 14, rounded corner 15, outer wall 16, outer slide 20, locking tooth 21, protrusion 22, rounded corner 23, rounded corner 24, locking assembly 30, The lock card 31, the boss 311, the locking engagement portion 312, the locking hole 3121, the limiting groove 3122, the inner wall 313, the elastic piece 32, the end portion 321, the flange 322, the hole 323, the elastic piece 33, the hole 331, the end surface 332, Rivets 34, operating levers 35, axial limiting surfaces 351, 36, cage assembly 40, cage 41, large steel balls 42, and small steel balls 43.

detailed description

The core of the present invention is to provide a structurally optimized seat rail that effectively controls product manufacturing costs while ensuring smooth sliding displacement of the inner slide relative to the outer slide. The present embodiment will be specifically described below in conjunction with the drawings. Please refer to FIG. 1 , which shows a schematic view of the axle of the seat slide of the embodiment. The seat rail includes an inner slide 10 and an outer slide 20. As in the prior art, the inner slide 10 is used to connect with a seat base (not shown), and the outer slide 20 is used for connecting a vehicle body bottom plate (not shown), and the sliding fit between the two To achieve the front and rear displacement of the seat relative to the vehicle body. 2 and FIG. 3, wherein FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is an exploded view of the assembly of the seat rail shown in FIG. 1.

As shown in FIG. 2 and FIG. 3, the cage assembly 40 is located between the inner slide 10 and the outer slide 20. The cage assembly 40 is sequentially provided with a plurality of rollers, and the plurality of rollers are respectively slid inside. Between the track 10 and the outer slide 20 to reduce the sliding friction between the two.

In the present solution, the lock assembly 30 is placed in the cavity of the inner slide 10, and the lock assembly 30 includes the lock card 31 and the elastic member.

The middle portion of the lock card 31 is hinged with the side wall of the inner slide 10, and the lock card 31 can be formed with a hole shaft through the cylindrical boss 311 on the side wall of the inner slide 10 to realize the lock card 31. Rotating around the hinge point; as shown in FIG. 4, the figure is a schematic view of the assembly between the inner slide 10 and the lock assembly 30 formed by the opposite side viewing angles of FIG. Of course, the above-mentioned bosses and holes can also be reversed, as long as they meet the needs of use.

The locking relationship between the lock card 31 and the outer slide 20 is formed at the locking engagement portion 312 of the lock card 31. The lock engagement portion 312 extends laterally from the opening 13 on the side wall of the inner slide 10. . The locking engagement portion 312 has a locking hole 3121. The outer slide 20 has a plurality of locking teeth 21 arranged in sequence along the longitudinal direction of the sliding rail, which are matched with the locking hole 3121 on the locking engagement portion 312. The locking holes 311 cooperate with different locking teeth 21 to determine different sliding positions. It is also possible to arrange the locking holes 3121 on the locking engagement portion 312 into a plurality of (not shown), that is, the locking teeth 21 on the outer slide 20 cooperate with different locking holes 3121 to determine different sliding. position. In this way, the lock card 31 rotates around the hinge point between the lock card 31 and the inner slide 10, so that the lock hole 3121 is engaged with or disengaged from the lock tooth 21 to lock between the inner slide 10 and the outer slide 20. Relative position. Obviously, the height dimension of the opening 13 in the side wall of the inner slide 10 should satisfy the swing amplitude requirement of the lock mating portion 312 during the switching between the two working positions of the engagement lock and the disengagement. It should be noted that the main structural relationship between the inner and outer slide rails, the cage assembly, and the lock mating portion in the present solution. The mating structural relationship between the 312 and the outer chute 20 can be asymmetrically designed or symmetrically designed. Obviously, the symmetrical design is the optimal solution.

As shown in the figure, three locking holes 3121 are disposed on both sides of the locking engagement portion 312, and the interval period of the locking teeth 21 is matched to improve the locking stability between the locking engagement portion 312 and the outer slide 20. . Of course, if the space length allows, it can also be set to a plurality of three.

In fact, the locking hole and the locking tooth in the above locking relationship may also be reversely arranged between the locking engagement portion 312 and the outer slide 20; that is, the locking hole is disposed on the outer slide, and the locking tooth is disposed at The locking engagement portion is within the scope of the present application as long as it can satisfy the switching between the two working positions of the engagement lock and the disengagement and unlocking with the rotation of the lock card 31.

Wherein, the elastic member is disposed between the lock card 31 and the inner slide 10 to provide a function for the lock card.

The locking pre-tightening force on the 31 causes the locking hole 3121 and the locking tooth 21 to be in the meshing lock state under normal conditions. Compared with the prior art, the locking assembly 30 of the solution is placed in the cavity of the inner slide 10, effectively utilizing the internal space of the slide rail, reducing the outer dimensions of the slide rail, thereby reducing the manufacturing cost of the product; On the other hand, the lock assembly 30 does not interfere with the cage in space, and can ensure smooth sliding displacement between the inner slide 10 and the outer slide 20.

It should be noted that the foregoing elastic member for applying the pre-tightening force can be realized in various ways, and the elastic rubber member can also satisfy the pre-tightening requirement. As mentioned above, due to the limitation of the external dimensions and the assembly space, the elastic member of the present solution preferably adopts the elastic piece 32 disposed substantially along the longitudinal direction of the slide rail. For details, please refer to FIG. 5 and FIG. 5 is a schematic view of the axial assembly of the two elastic pieces, the lock card and the operating rod in the embodiment, and FIG. 6 is an exploded view of the assembly of the components in FIG.

The elastic piece 32 is bent as a whole to improve its performance. As shown in the figure, one end of the elastic piece 32 is fixedly connected to the inner slide 10, and the other end 321 is opposite to the middle of the lock fitting portion 312, so as to ensure that the lock hole 3121 and the lock tooth 21 in the normal state are between Stable engagement lock status. In order to avoid the state of the force application, the elastic piece 32 and the locking engagement portion 312 are disengaged from each other. The upper surface of the locking engagement portion 312 can be provided with a limiting groove 3122 disposed along the longitudinal direction of the sliding rail. The other end portion 321 of the card 32 is fitted in the limit groove 3122 to restrict the displacement in the left-right direction.

In addition, as shown in FIG. 5 and FIG. 6, the elastic piece 32 on the side of the boss 311 has a side flap 322. The flange 322 is in contact with the inner wall 313 of the lock card 31, and functions to prevent the boss 311 of the lock card 31 from falling out of the hole 11 of the inner slide 10 during use and operation, and at the same time, to prevent the locking process. The middle lock card 31 is laterally offset.

For seat rails, the overall size of the seat rails should be controlled to the maximum extent possible. In particular, the structural forms of the inner slide 10 and the outer slide 20 can be formed by different structures and processes, for example, by stamping. Specifically, as shown in FIG. 2, the outer slide rail 20 has a U-shaped cross section as a whole, and the edges of the two side walls are bent inwardly and then bent downward to form a symmetrical arrangement of the accommodating cage assembly 40. Correspondingly, the inner slide 10 has a "several" shape as a whole, and the edges of the two side walls are bent outward and then bent upward, and are engaged with the rollers on the cage assembly 40. Along the length of the slide rail, each of the cage assemblies 40 is provided with upper and lower rows of rollers, and the two rows of rollers are respectively placed at upper and lower outer corners of the receiving portion. The two side cage assemblies 40 are provided with a total of four rows of rollers, which have the advantages of high stability and smooth sliding.

As shown in the drawings, the cage 41 of the cage assembly 40 is provided with a plurality of small steel balls 43 and the following large steel balls 42. Wherein, the small steel ball 43 is placed at the upper outer corner of the receiving portion, that is, at the rounded corner 24 above the inner wall of the outer slide 20; the large steel ball 42 is placed at the lower outer corner of the receiving portion, that is, under the inner wall of the outer slide 20 The rounded corners are 23 places. At the same time, the large steel ball 42 and the small steel ball 43 are respectively bent outwardly from the edges of the two side walls of the inner slide 10, and then the rounded corners 15 formed by the upward bending are joined to the outer wall 164. Thereby, the inner and outer slides can slide each other.

As shown in Figures 2 and 3, a plurality of adapted downwardly extending locking teeth 21 are formed on both inner edges of the outer slide 20 for mating with the locking apertures 3121.

The locking assembly 30 can further include an operating lever 35, one end of which is connected to the other end of the lock card 31 and the other end of which extends from the cavity of the inner slide 10, so that the operating lever 35 can be applied to drive the locking card. 31 is rotated relative to the inner slide 10 about the hinge point, and the matching locking hole 3121 is separated from the lock tooth 21 to unlock.

In order to improve the assembly processability of the seat rail, the following structural design can also be specifically adopted. As shown in the figure, the operating rod 35 has an axially extending surface 351 extending outwardly. The locking assembly 30 further includes one end fixed to the inner slide 10 and the other end being bent back to the axial limiting surface 351. · ί fit the shrapnel 33. So designed, the operating lever 35 can be inserted into the inner slide 10 after the rail body is assembled. The lock card 31 is assembled. During the insertion process, the operating lever 35 pushes the meandering bent portion of the elastic piece 33 outward and elastically deforms until the axial limiting surface 351 of the operating lever 35 reaches the predetermined position, and the elastic piece 33 is reset, and the elastic piece 33 is turned back to the bent portion. The end surface 332 is matched with the axial limiting surface 351 of the operating rod 35, and the operating rod 35 can be effectively prevented from being abnormally pulled out of the inner slide 10. Obviously, the split design can reduce the outer dimensions of the main body of the slide rail, and it is easy to carry out the assembly work. The operation lever can be inserted after the assembly of the seat or even after the assembly of the whole vehicle, and the assembly process is better.

Of course, in order to make the overall structure of the slide rail more compact, the elastic piece 32 to which the pre-tightening force is applied and the elastic piece 33 which restricts the abnormal release of the operation lever 35 can be fixed at the same position on the inner slide 10, for example, welding or riveting. As shown in Figs. 5 and 6, the two elastic pieces are riveted and fixed together with the holes 12 of the inner slide 10 by rivets 34. Specifically, the cross-section of the rivet 34 has opposite straight sections, and the elastic piece 32 and the elastic piece 33 are respectively provided with holes 323 and holes 331 having the same cross-sectional shape as the rivet 34, and the holes 331 are matched thereto; wherein the holes 12 of the inner slide 10 are also rivets The cross-sectional shape of 34 is the same to fix the position of the elastic piece 32 and the elastic piece 33, and the lateral displacement or rotation of the elastic piece 32 and the elastic piece 33 can be prevented.

The lower barrel is to illustrate the specific operation of the seat rail.

1. In the normal state, the pre-tightening force of the elastic piece 32 acts on the lock card 31, and the slide rail is normally locked. The locking hole 3121 on the locking mating portion 312 is engaged with the locking tooth 21 on the outer slide 20; as shown in FIG. In this state, the relative position between the inner slide 10, the lock card 31, and the outer slide 20 is fixed and cannot be slid.

Second, when the adjustment of the front and rear position of the seat is required. First, an external force is applied to the operating lever 35 to move the operating lever 35 upward, and the operating lever 35 drives the locking card 31 to rotate around the hinge point between the locking plate 31 and the inner slide 10, and overcomes the force of the elastic piece 32, and at the same time, The lock mating portion 312 swings downwardly in the opening 3 until the lock hole 3121 is disengaged from the lock tooth 21, as shown in FIG. 8, the slide rail is unlocked, and the inner and outer slide rails can slide relative to each other; The seat position is adjusted forward or backward, and after the target position is released, the operating lever 35 is released, and under the action of the elastic piece 32, the lock 31 is rotated about its hinge relative to the inner slide 10 until the lock on the lock card 31 The stop hole 3121 is engaged with the lock tooth 21 on the outer slide 20, and at this time, the inner and outer slides cannot slide each other and return to the slide lock state. In addition, a bushing 36 is disposed between the operating rod 35 and the inner slide 10, and the bushing 36 is made of a plastic material to prevent metal collision between the operating rod 35 and the inner and outer slides during operation and use. Generate noise and avoid affecting customer experience.

In the unlocked state, if the user slides the seat too much, it is highly likely that the inner slide 10 will completely escape from the outer slide 20. Therefore, the limit structure design is also implemented in the solution, and the inner slide 10 and the outer slide 20 are correspondingly provided with limit protrusions to limit the limit working position of the inner slide 10 with respect to the outer slide 20 to retract and extend. Specifically, as shown in Fig. 8, the bottom of the outer slide 20 has four upwardly formed projections 22, and the bottom of the inner slide 10 has four downwardly formed projections 14. Thus, when the inner and outer slides slide to each other at the limit positions of the ends along the length of the slide rail, the protrusion 22 of the outer slide 20 and the protrusion 14 of the inner slide 10 collide with each other, and the limit position of the above limit position can be effectively ensured. The inner and outer slides are used within a certain range, so that the inner and outer slides do not slide out and detach. The pole position design adopts a structure in which protrusions are directly arranged on the inner and outer slides, and the front and rear limits are reliable, the limit precision is high, and the other pole devices or parts are not added, and the cost is low.

In particular, the related drawings do not graphically illustrate the seat and the vehicle body floor. It should be understood that the assembly relationship of the seat rails in the entire vehicle is exactly the same as in the prior art, for example, in the inner slide 10, Corresponding bolt mounting holes are formed in the slide 20, and are respectively coupled with the seat base and the vehicle body bottom plate in the form of threaded fasteners. Those skilled in the art can fully realize the above-mentioned assembly connection relationship, and therefore will not be described herein.

The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It should be considered as the scope of protection of the present invention.

Claims

Rights request

1. Seat rails, including:

An inner slide for connecting the seat base;

The utility model is characterized in that it further comprises a locking assembly built in the cavity of the inner slide, the locking assembly comprising:

a lock card, wherein a middle portion is hinged to a side wall of the inner slide, and one end of the lock card has a locking engagement portion extending laterally from an opening on a side wall of the inner slide; along the slide rail The locking engagement portion has a locking hole or a locking tooth, and the outer sliding rail has a locking tooth or a locking engagement portion adapted to the locking hole on the locking engagement portion a locking hole corresponding to the locking tooth; a plurality of locking teeth or locking holes on the locking engagement portion or the outer slide, and the locking card between the locking device and the inner slide Rotating the hinge to lock a plurality of relative positions between the inner slide and the outer slide;

The seat rail according to claim 1, wherein the lock fitting portion has locking holes on both sides thereof, and the outer slide rails have a plurality of corresponding downward extensions on both sides thereof. The locking teeth are out.

The seat rail according to claim 2, wherein the lock hole on the lock fitting portion is provided in plural along the longitudinal direction of the slide rail.

The seat rail according to claim 3, wherein the upper surface of the locking engagement portion is provided with a limiting groove disposed along the longitudinal direction of the sliding rail, and the elastic member is specifically one end and the end The inner slide rail is fixedly connected, and the other end is placed in the elastic piece in the limit groove.

The seat rail according to claim 1, wherein the lock assembly further comprises an operating lever, one end of which is connected to the other end of the lock card, and the other end of the operating lever is from the The cavity of the inner slide extends, and the operating rod can drive the lock card to rotate about the hinge relative to the inner slide, so that the matching lock hole and the lock tooth are separated and unlocked.

The seat rail according to claim 5, wherein the operating lever has an axially extending surface extending outward; the locking assembly further includes one end fixed to the inner slide, and the other A spring piece that is folded back and bent against the limiting surface at one end.

The seat rail according to claim 1, wherein the outer slide has a U-shaped cross section as a whole, and the edges of the two side walls are bent inward and then bent downward. Forming a symmetrical arrangement of the accommodating portion for accommodating the retainer assembly; the inner slide rail has a "several" shape as a whole, and the edges of the two side walls are bent outward and then bent upward, and the retaining The roller on the frame assembly is matched with the four.

The seat rail according to claim 7, wherein two rows of upper and lower rollers are disposed on the holder assembly along the longitudinal direction of the slide rail, and two rows of rollers are respectively placed in the housing. The upper and lower corners of the department.

The seat rail according to any one of claims 1 to 8, wherein a bushing is nested between the operating lever and the inner slide.

The seat rail according to claim 9, wherein the inner slide rail and the outer slide rail are correspondingly provided with a finite position protrusion to limit the inner slide rail relative to the outer slide rail Retracted and extended extreme working position.