CN210961116U

CN210961116U - Sliding mechanism for office chair back seat synchronous linkage device

Info

Publication number: CN210961116U
Application number: CN201921760062.7U
Authority: CN
Inventors: 叶金
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-07-10
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a sliding mechanism for an office chair back seat synchronous linkage device, which comprises a base, a bracket and a sliding component, wherein the sliding component comprises a sliding plate and a clamping component, and the sliding plate has a sliding state and a fixed state; the clamping assembly is configured to fix the position of the sliding plate and comprises a clamping support, the clamping support is detachably connected with the bracket, a clamping connecting rod penetrates through the clamping support, and an inserting hole is correspondingly formed in the sliding plate; when the clamping rod upwards passes through the plug hole, the sliding plate is in a fixed state, and when the clamping rod downwards moves out of the plug hole, the sliding plate is restored to a sliding state. The utility model provides a glide machanism for synchronous aggregate unit of office chair back seat realizes the back-and-forth movement of seat support through setting up and bracket sliding fit's slide plate to realize the seat of seat support and deeply adjust. Compared with the prior art, the utility model discloses with the independent modularization setting of joint support, the installation of not only being convenient for like this, general adaptability is also stronger.

Description

Sliding mechanism for office chair back seat synchronous linkage device

Technical Field

The utility model relates to a thing to sit on field, in particular to a glide machanism that is used for synchronous aggregate unit of office chair back seat.

Background

The seat is one of seats, is widely used in work and life of people, is generally accepted and loved by people, and is one of essential furniture in modern office and household environments; the conventional chair back is generally one and mostly fixed, that is, the position of the chair back is fixed and cannot change along with the change of the sitting posture of the user.

Therefore, some manufacturers improve the prior art, the chair back inclination angle can be adjusted by arranging the chassis connected with the chair back below the seat cushion, so that better sitting experience is brought to a user, but when the user sits, the user needs to adjust the chair back inclination angle and hopes to adjust the sitting depth of the chair seat according to stature or preference, so that the user can sit more comfortably.

US patent US7159942B2 discloses a SEAT S L IDE ADJUSTMENT MECHANISM, translated in Chinese as a horizontal ADJUSTMENT MECHANISM for a chair, which achieves SEAT depth ADJUSTMENT of the SEAT by means of a second plate that is mounted below the SEAT plate by fasteners, the second plate having downward projections 96 on each side edge, the downward projections 96 including inward projections 98 that create a C-shaped cross-section, and guide blocks 74 on each side of the first plate, the guide blocks being located within the C-shaped cross-section when the second plate is in sliding engagement with the first plate.

The patent discloses that the mating portion of the lever mechanism can be selectively disengaged from the mating portion of the second plate by a lever mechanism to allow the second plate to move relative to the first plate. Although the requirement of adjusting the sitting depth can be met, the structure of the chair seat is complex, a certain position needs to be reserved under the chair seat plate, and the light and small design of the chassis is not facilitated.

In addition, chinese patent "Z L98218817. X" discloses a "chair cushion activity adjusting device", which includes a moving frame 1, a fixed frame 2 and an adjusting structure 3, wherein two corresponding frames 12, 12 'of the moving frame 1 are provided with plate bodies 11, the adjusting structure 3 is inserted into one frame of the moving frame 1 by a steering shaft 32, the fixed frame 2 is installed above the seat leg 5, two side edges thereof are provided with guide rail portions 21, 21', and the positioning portions of the guide rail portions 21, 21 'are formed by forming a plurality of continuous semicircular grooves 211 at the edges of the guide rail portions 21, 21'.

The actuating state of the patent is: when the steering shaft 32 is inserted into any one of the semicircular slots 211, the seat cushion 4 is linked to move freely and slidably to a proper position, and the adjusting rod 35 is pulled down, the steering shaft 32 moves inwards, so that the movable frame 1 is braked by the insertion of the steering shaft 32 into any one of the semicircular slots 211 of the fixed frame 2, and the seat cushion 4 is positioned. Although the requirement can be met, the mode of pushing the steering shaft 32 forwards and backwards is not convenient, and a user with little strength is labor-consuming to operate; furthermore, the structure of the patent is complex, the integral design is adopted, the factory is designed well, and the common chassis on the market is not suitable, so the universal applicability is poor.

Therefore, the utility model provides a simple structure, easy to assemble, and for modular, components of a whole that can function independently design, can dismantle with the seat chassis and be connected, general suitability is stronger.

Disclosure of Invention

The utility model provides a glide machanism for synchronous aggregate unit of office chair back seat realizes the back-and-forth movement of seat support through setting up and bracket sliding fit's slide plate to realize the seat of seat support and deeply adjust. Particularly, at the gliding in-process of sliding plate front and back, the joint subassembly can play the fixed action to the sliding plate when the sliding plate removes required position to make the sliding plate stop in this position for a long time, therefore reach the purpose of adjusting the seat support seat depth.

The technical scheme of the utility model is realized like this:

a glide mechanism for an office chair back-rest synchronization linkage, comprising:

the base is used for connecting the air rod;

the bracket is used for fixing the chair seat and is arranged at the upper end of the base;

the sliding assembly comprises a sliding plate and a clamping assembly, the sliding plate is arranged above the bracket and is in sliding connection with the bracket, and the sliding plate is in a sliding state and a fixed state; the clamping assembly is configured to fix the position of the sliding plate and comprises a clamping support arranged below the bracket, the clamping support is detachably connected with the bracket, a clamping rod penetrates through the clamping support, the clamping rod penetrates through the bracket when moving upwards or downwards, a plurality of inserting holes for the penetration of the clamping rod are correspondingly formed in the sliding plate, and the inserting holes are formed in the length direction of the sliding plate; when the clamping rod upwards passes through the plug hole, the sliding plate is in a fixed state; when the clamping rod moves out of the plug hole downwards, the sliding plate is restored to a sliding state.

The utility model provides a glide machanism for synchronous aggregate unit of office chair back seat realizes the back-and-forth movement of seat support through setting up and bracket sliding fit's slide plate to realize the seat of seat support and deeply adjust. Particularly, at the gliding in-process of sliding plate front and back, the joint subassembly can play the fixed action to the sliding plate when the sliding plate removes required position to make the sliding plate stop in this position for a long time, therefore reach the purpose of adjusting the seat support seat depth. Compared with the prior art, the clamping support of the utility model is detachably connected with the bracket, and the clamping support is independently arranged in a modularized way, so that the installation is convenient, and the general adaptability is strong; furthermore the utility model discloses a structure sets up simply, and overall structure is comparatively retrencied, small and exquisite, and the operation control of being convenient for when using is fit for using widely on a large scale.

In more detail, the clamping assembly is matched with the sliding plate to fix the position of the sliding plate; when the sliding plate moves to a required position, the clamping rod is manually or mechanically controlled to move upwards so that the clamping rod penetrates through the inserting hole in the sliding plate, and the sliding plate is in a fixed state at the moment, namely the position of the sliding plate is limited by the clamping rod, so that the sitting depth of the chair seat is fixed after adjustment; when the seat back of needs readjustment seat support seat is dark, manual or mechanical control joint pole makes it shift out the spliced eye downwards, and the slide plate is in the glide attitude this moment, and the user can adjust the slide plate to required position after, upwards remove the joint pole again to it passes the spliced eye and can fix the slide plate once more.

Preferably, the clamping device further comprises a control assembly for controlling the connecting rod to move upwards or downwards, the control assembly comprises a control switch, a control pull wire and a return spring, the control pull wire is configured to enable the clamping rod to be synchronously linked through traction, the return spring is arranged in the clamping bracket, and the return spring penetrates through the clamping rod; when a force is applied to the control switch, the control pull wire pulls the clamping rod under the action of the control switch, so that the clamping rod moves upwards or downwards to a state that the sliding plate is in a fixed state or a sliding state, and meanwhile, the reset spring is pulled to deform; when the force application to the control switch is stopped, the control pull wire retracts under the action of the return spring to drive the clamping rod to move in the opposite direction to the other state that the sliding plate is in the fixed state or the sliding state.

Theoretically, the clamping rod can be controlled by hands to move upwards or downwards, but the hands are troublesome to control, so that the utility model is provided with a control assembly, particularly, the control stay wire moves under the action of a control switch, and the control stay wire is controlled to move the clamping rod upwards or downwards, so that the sliding plate can be switched between a fixed state and a sliding state; when the fixed state or the sliding state is switched, only the control switch is needed to be operated, so that the operation is quick and convenient.

Preferably, the joint support include base and L shape base plate, L shape base plate include diaphragm and riser, the base can be dismantled with the bracket and be connected, reset spring set up between diaphragm and base, the joint pole wear out in the base after passing diaphragm, reset spring.

Preferably, the base is provided with a shaft seat, and a steering shaft penetrates through the shaft seat; the control assembly further comprises a torsion spring, the torsion spring comprises a ferrule and at least one torsion spring arm, the ferrule is sleeved on the steering shaft, the torsion spring arm is indirectly or directly abutted against the reset spring and controls the connecting rod to move, a tilting arm extends out of the part of the ferrule, and the tilting arm is connected with the control pull wire. In order to make the joint pole reset as early as possible, the utility model discloses the torsional spring has been set up, control act as go-between and pull the stick up arm of torsional spring for the torsional spring arm of torsional spring pulls the joint pole simultaneously and upwards or moves down.

Preferably, the indirect contact between the torsion spring arm and the return spring and the movement of the control connecting rod mean that: the torsional spring includes two interval torsion spring arms side by side, wears to be equipped with one on one of them torsion spring arm and supports and press the spring, supports to extend one on pressing the spring and supports and press the arm, support and press the arm and insert behind the joint pole with another torsion spring arm butt, simultaneously support the lower surface butt of pressing spring and reset spring.

The torsion spring and the abutting spring are in a double-spring design, and provide pre-tightening force for the sliding plate. Particularly, when the slide board removed a certain position and the slide board did not set up corresponding spliced eye in this position, the joint pole can't penetrate the slide board in, therefore lead to unable fixed to the slide board, if the user stopped to the control switch application of force this moment, then the joint pole can have the trend that continues to penetrate in the spliced eye under the effect of pretension, when user back-and-forth movement small segment distance, the joint pole can insert in nearest spliced eye under the effect of pretension, therefore with the rigidity of slide board.

Preferably, the vertical plate is provided with an avoiding hole for avoiding the abutting arm or the torsion spring arm.

Preferably, the direct contact between the torsion spring arm and the return spring and the movement of the control rod means that: the torsion spring comprises a torsion spring arm, the torsion spring arm is inserted into the clamping rod, and the reset spring is abutted against the torsion spring arm.

Preferably, the sliding device further comprises a guide assembly, the guide assembly comprises a guide groove and a guide rod, the guide rod is fixedly arranged on the upper surface of the bracket, the guide groove is correspondingly arranged on the sliding plate, and the guide rod moves in the guide groove in the process that the sliding plate slides along the bracket. The guide assembly plays a role in guiding, so that the sliding plate cannot deviate from the direction in the process of sliding along the bracket.

Preferably, the guide rod is a screw. The screw is convenient to set up and dismantle.

Preferably, the shaft seat is formed by cutting a piece of material from the base and bending the material.

Preferably, the detachable connection of the base and the bracket means that: the base and the bracket are fixedly connected through screws or bolts.

Preferably, the base and the L-shaped base plate are integrally formed, and the transverse plate and the vertical plate are integrally formed.

Preferably, the bracket is provided with a hollow groove to expose the plug hole of the sliding plate.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

Compared with the prior art, the clamping support and the bracket of the utility model are detachably connected, and the clamping support is independently arranged in a modularized way, so that the installation is convenient, and the general adaptability is strong; furthermore the utility model discloses a structure sets up simply, and overall structure is comparatively retrencied, small and exquisite, and the operation control of being convenient for when using is fit for using widely on a large scale.

Drawings

Fig. 1 is a schematic perspective view of a sliding mechanism in practical application in embodiment 1 of the present invention;

fig. 2 is a schematic perspective view of a sliding mechanism in practical application in embodiment 1 of the present invention;

fig. 3 is a schematic perspective view of the sliding mechanism and the bracket of the present invention after being combined in embodiment 2;

fig. 4 is a schematic perspective view of a sliding mechanism and a bracket of the present invention after being combined in embodiment 1;

fig. 5 is a schematic perspective view of a sliding mechanism and a bracket of the present invention after being combined in embodiment 1;

fig. 6 is an enlarged view of a portion a of fig. 5.

The figures are numbered: a base 1; a connecting rod 2; a bracket 3; a rotating shaft 4; a seesaw 5; a slide plate 6; a control switch 7; controlling the pull wire 8; a return spring 9; a base 10; a transverse plate 11; a riser 12; a chuck lever 13; a plug-in hole 14; a shaft seat 15; a steering shaft 16; a torsion spring 17; a ferrule 18; a torsion spring arm 19; b torsion spring arm 20; a pressing spring 21; a rocker arm 22; a guide groove 23; a guide rod 24; the pressing arm 25; relief holes 26; the hollow-out grooves 27.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "a", "B", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The orientation "front and rear" is described based on the seat being "front" in the direction away from the back of the chair and "rear" in the direction towards the back of the chair during normal use of the chair.

The term "disposed back and forth" means: when the seat is normally used, the seat is arranged along the length direction of the seat, namely the seat is arranged front and back; the term "left-right disposed" means: when the seat is in normal use, the arrangement along the width direction of the seat is the left-right arrangement.

The specific implementation manner of the utility model is as follows:

example 1: as shown in fig. 1, 2, 4-6, the utility model provides a glide machanism for office chair back seat synchronous linkage, include: the chair comprises a base 1 used for connecting an air rod, a connecting rod 2 rotatably connected with the middle part of the base 1, a bracket 3 used for fixing a chair seat, a rocker 5 connected with the connecting rod 2 into a whole, wherein the bracket 3 is rotatably connected with one end of the connecting rod 2 through a rotating shaft 4; the chair seat further comprises a sliding assembly, the sliding assembly comprises a sliding plate 6 which is arranged above the bracket 3 and is in sliding connection with the bracket 3, the chair seat is fixedly arranged on the sliding plate 6, and the sliding plate 6 drives the chair seat to move back and forth, so that the sitting depth of the chair seat is adjusted; specifically, 6 slide 6 of slide 6 have a glide attitude and a fixed state, when slide 6 was in the glide attitude, slide 6 slided back and forth, drives the seat support back-and-forth movement simultaneously, when slide 6 was in the fixed state, 6 positions of slide were fixed, consequently made the seat support stay for a long time.

The clamping assembly comprises a clamping support arranged below the bracket 3, the clamping support comprises an integrally formed base 10 and an L-shaped base plate, the L-shaped base plate comprises an integrally formed transverse plate 11 and a vertical plate 12, the base 10 and the bracket 3 are fixedly connected through screws, clamping rods 13 penetrate through the transverse plate 11 and the base 10, the clamping rods 13 penetrate through the bracket 3 when moving upwards or downwards, three inserting holes 14 for the clamping rods 13 to penetrate through are correspondingly formed in the sliding plate 6 in the embodiment, the inserting holes 14 are formed in the length direction of the sliding plate 6, and in addition, hollow grooves 27 are formed in the bracket 3 to expose the inserting holes 14 of the sliding plate 6.

When the clamping rod 13 upwards passes through the plug holes 14 at different positions, the sliding plate 6 is in a fixed state, and the sliding plate 6 stays at different positions, so that the seating depths of the chair seat are different; specifically, when the sliding plate 6 moves to a desired position, the clamping rod 13 is manually or mechanically operated to move upwards so that the clamping rod passes through a plug hole 14 arranged on the sliding plate 6, and the position of the sliding plate 6 is limited by the clamping rod 13, so that the sitting depth of the seat is fixed after adjustment; when the seat depth needs to be adjusted again, the clamping and connecting rod 13 is manually or mechanically operated to move downwards out of the inserting hole 14, the sliding plate 6 is restored to a sliding state at the moment, a user can adjust the sliding plate 6 to slide back and forth, and after the required position is adjusted, the clamping and connecting rod 13 moves upwards to penetrate through the corresponding inserting hole 14, and then the sliding plate 6 can be fixed again.

Theoretically, the clamping rod 13 can be controlled by hands to move upwards or downwards, but the hands are troublesome to control, so the utility model discloses a control assembly that the control clamping rod 13 moves upwards or downwards is provided, the control assembly comprises a control switch 7, a control pull wire 8 and a reset spring 9, the control pull wire 8 moves under the action of the control switch 7 and indirectly pulls to enable the clamping rod 13 to synchronously link, so that the clamping rod 13 moves upwards or downwards, and the sliding plate 6 can be switched between a fixed state or a sliding state; specifically, return spring 9 set up between diaphragm 11 and base 10, joint pole 13 pass through diaphragm 11, behind the return spring 9 and wear out in the base 10.

When a user applies force to the control switch 7, the control pull wire 8 is pulled, the control pull wire 8 tensions the pull clamping rod 13 to move downwards until the sliding plate 6 is in a sliding state, and meanwhile, the return spring 9 deforms to generate return elastic force; the sliding plate 6 can be slid back and forth at this time, thereby driving the position of the seat to change.

When a user stops applying force to the control switch 7, the control pull wire 8 is not restrained by the control switch 7 any more, the control pull wire 8 retracts under the action of the return spring 9, the clamping rod 13 is driven to move upwards in the opposite direction until the sliding plate 6 is in a fixed state, and the position of the sliding plate 6 is fixed for a long time at the moment.

Through the control assembly, the user can adjust the sitting depth of the chair seat by only changing the state of the control switch 7, and the chair seat is quick and convenient.

In this embodiment, the base 10 is further provided with a shaft seat 15, the shaft seat 15 is formed by cutting a material from the base 10 and bending, the shaft seat 15 is parallel to the vertical plate 12, and a steering shaft 16 penetrates between the shaft seat 15 and the vertical plate 12, and the shaft seat 15 and the bracket 3 are welded together in this embodiment, so that the shaft seat 15 is connected more firmly; in order to make the joint pole 13 can reset as early as possible, the utility model discloses a control assembly still includes torsional spring 17, torsional spring 17 include the torsion spring arm that lasso 18 and two intervals set up side by side, be A torsion spring arm 19, B torsion spring arm 20 respectively, 18 covers of lasso locate on the steering spindle 16, wear to be equipped with the pressure spring 21 that sets up around one on A torsion spring arm 19 in this embodiment, pressure spring 21 on extend one and support the arm 25, support and support arm 25 and insert behind the joint pole 13 with B torsion spring arm 20 butt, and support arm 25 and offer from riser 12 and be used for dodging and support and wear out in the hole 26 of dodging of arm 25 dodging, simultaneously support spring 21 and reset spring 9's lower surface butt, lasso 18 middle part upwards extend out the arm 22, arm 22 is connected with control 8 acts as go-between, when control 8 pulls, drives arm 22 and remove, A torsion spring arm 19, two, The B torsion spring arm 20 is linked with the pressing spring 21, and further drives the clamping rod 13 to move, and simultaneously presses the return spring 9.

The torsion spring 17 and the pressing spring 21 are arranged in a "double-spring design" to provide a preload for the slide plate 6. Specifically, when the sliding plate 6 moves to a certain position and the sliding plate 6 is not provided with the corresponding inserting hole 14 at the certain position, the clamping rod 13 still cannot penetrate into the sliding plate 6, so that the sliding plate 6 cannot be fixed; at this moment, if the user stops applying force to the control switch 7, the clamping rod 13 will have a tendency of continuously penetrating into the plugging hole 14 under the action of the pre-tightening force, and when the user moves back and forth to enable the sliding plate 6 to move a small distance along with the sliding plate, the clamping rod 13 will be inserted into the nearest plugging hole 14 under the action of the pre-tightening force, so that the position of the sliding plate 6 is fixed.

Furthermore, the utility model discloses still include the guide subassembly, the guide subassembly plays the effect of direction for slide 6 is at the gliding in-process of following bracket 3, can not skew direction. Specifically, the guiding assembly includes a guiding groove 23 and a guiding rod 24, in this embodiment, the guiding rod 24 is a screw that is easy to detach and is fixed on the bracket 3, the guiding groove 23 is correspondingly disposed on the sliding plate 6, and the guiding rod 24 moves in the guiding groove 23 during the sliding process of the sliding plate 6 along the bracket 3.

Example 2: as shown in fig. 3, the difference from embodiment 1 lies in the design of the axle seats 15, which is another embodiment, specifically, the axle seats 15 in this embodiment are two in parallel, the steering shaft 16 is inserted between the two axle seats 15, and the two axle seats 15 are perpendicular to the vertical plate 12; a further difference from embodiment 1 is that the biasing springs 21 in this embodiment are provided on the left and right sides, and thus, there is no need to provide the vertical plate 12 with the relief holes 26 for relieving the biasing arms 25.

Claims

1. A glide machanism for synchronous aggregate unit of office chair back seat, its characterized in that includes:

the base is used for connecting the air rod;

2. Sliding mechanism according to claim 1, characterized in that: the clamping device is characterized by further comprising a control assembly for controlling the connecting rod to move upwards or downwards, wherein the control assembly comprises a control switch, a control pull wire and a return spring, the control pull wire is configured to enable the clamping rod to be synchronously linked through traction, the return spring is arranged in the clamping support, and the return spring is arranged on the clamping rod in a penetrating mode; when a force is applied to the control switch, the control pull wire pulls the clamping rod under the action of the control switch, so that the clamping rod moves upwards or downwards to a state that the sliding plate is in a fixed state or a sliding state, and meanwhile, the reset spring is pulled to deform; when the force application to the control switch is stopped, the control pull wire retracts under the action of the return spring to drive the clamping rod to move in the opposite direction to the other state that the sliding plate is in the fixed state or the sliding state.

3. The sliding mechanism of claim 2, wherein said clamping bracket comprises a base and an L-shaped base plate, said L-shaped base plate comprises a transverse plate and a vertical plate, said base is detachably connected to the bracket, said return spring is disposed between the transverse plate and the base, and said clamping rod passes through the transverse plate and the return spring and then passes out of the base.

4. Sliding mechanism according to claim 3, characterized in that: the base is provided with a shaft seat, and a steering shaft penetrates through the shaft seat; the control assembly further comprises a torsion spring, the torsion spring comprises a ferrule and at least one torsion spring arm, the ferrule is sleeved on the steering shaft, the torsion spring arm is indirectly or directly abutted against the reset spring and controls the connecting rod to move, a tilting arm extends out of the part of the ferrule, and the tilting arm is connected with the control pull wire.

5. Sliding mechanism according to claim 4, characterized in that: the indirect abutting of the torsion spring arm and the reset spring and the control of the movement of the connecting rod refer to that: the torsional spring includes two interval torsion spring arms side by side, wears to be equipped with one on one of them torsion spring arm and supports and press the spring, supports to extend one on pressing the spring and supports and press the arm, support and press the arm and insert behind the joint pole with another torsion spring arm butt, simultaneously support the lower surface butt of pressing spring and reset spring.

6. Sliding mechanism according to claim 5, characterized in that: an avoiding hole for avoiding the abutting arm or the torsion spring arm is formed in the vertical plate.

7. Sliding mechanism according to claim 4, characterized in that: the direct abutting of the torsion spring arm and the reset spring and the control of the movement of the connecting rod refer to the following steps: the torsion spring comprises a torsion spring arm, the torsion spring arm is inserted into the clamping rod, and the reset spring is abutted against the torsion spring arm.

8. Sliding mechanism according to claim 1, characterized in that: the guide assembly comprises a guide groove and a guide rod, the guide rod is fixedly arranged on the upper surface of the bracket, the guide groove is correspondingly arranged on the sliding plate, and the guide rod moves in the guide groove in the process that the sliding plate slides along the bracket.

9. Sliding mechanism according to claim 8, characterized in that: the guide rod is a screw.

10. Sliding mechanism according to claim 4, characterized in that: the shaft seat is formed by cutting a piece of material on the base and bending the material.

11. Sliding mechanism according to claim 3, characterized in that: the detachable connection of the base and the bracket means that: the base and the bracket are fixedly connected through screws or bolts.

12. Sliding mechanism according to claim 3, wherein said base is integrally formed with an L-shaped base plate, and said cross plate is integrally formed with said vertical plate.

13. Sliding mechanism according to claim 1, characterized in that: the bracket is provided with a hollow groove to expose the plug hole of the sliding plate.