CN218008944U - Sliding adjusting module for seat - Google Patents

Abstract

The utility model provides a sliding adjusting module for a seat, which comprises a base and a sliding part, wherein the sliding part is provided with a bilateral locking component, which comprises a locking piece and a return spring; the locking piece is provided with a tooth tip; the bilateral locking assembly has an expansion state and a contraction state, and under the expansion state, the tooth tips of the two locking pieces respectively protrude out of the side end of the sliding piece; in the contraction state, the end part of the tooth tip does not exceed the side end of the sliding part; the left side and the right side of the base are provided with tooth joint matching parts which comprise tooth sockets arranged at intervals and positioning teeth approaching the side end of the sliding part; under the initial position, the bilateral locking assembly is in an unfolded state, and the sliding piece slides relative to the base to enable the tooth tips of the locking pieces to be sequentially in tooth connection with the tooth sockets; when the sliding piece slides to enable the positioning teeth to extrude the locking piece to enable the bilateral locking assembly to be switched to a contraction state, the sliding piece can be reset reversely; the base is provided with a reset top tooth, and the reset top tooth extrudes and acts on the locking piece to enable the bilateral locking assembly to reset to the unfolding state again.

Description

Sliding adjusting module for seat

Technical Field

The utility model relates to a thing to sit on field, in particular to a sliding adjustment module for thing to sit on.

Background

At present, more and more people often sit in front of a computer for a long time for working or entertainment, and the long-time sitting posture is incorrect and easily causes damage to the spine and cervical vertebra of the human body. The waist rest, the headrest or the chair seat and other parts on the chair have the functions of lifting or adjusting forwards and backwards, can be conveniently adjusted to a proper state, and provides comfort for a user when the chair is used.

The current seats are all adjusted by providing a height adjustment device or a fore-and-aft adjustment device. However, some existing adjusting devices are complex in structure, and adopt structures such as pull wires, gears, racks and the like, so that more and more parts are used for controlling adjustment, and the occupied space is larger; the aesthetic appearance of the seat is seriously affected; secondly, control switches such as pull wires, buttons or handles are arranged, and when the device is adjusted, a user needs to act on the adjusting switch with one hand and then act on the component to move with the other hand; the two-hand operation is needed, but the simple things become more complicated, the interaction condition with the user in the actual use of the product is not considered, and the product is not in line with the human engineering.

Therefore, to the above problem, the utility model provides a design convenience of customers can be operated at will, and need not the sliding adjustment module that is used for the thing to sit on of switch operation.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a sliding adjusting module for a seat; the sliding piece can slide along the base in a circulating reciprocating manner and reset reversely through the matching of the bilateral locking assembly and the tooth joint matching part; in the adjusting operation process, the sliding piece is directly acted, and any other switch is not needed; the adjustment operation is simple and convenient.

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

a sliding adjustment module for seating furniture, comprising: the sliding piece is in sliding fit in the base; the bilateral locking assembly is arranged on the sliding piece; the bilateral locking assembly comprises locking pieces arranged in a left mirror image and a right mirror image and a return spring transversely connected between the two locking pieces; the locking piece is rotationally connected to the sliding piece; the locking piece is provided with a tooth tip protruding towards the outside; the bilateral locking assembly has an expansion state and a contraction state, and under the expansion state, the tooth tips of the two locking pieces respectively protrude out of the side end of the sliding piece; a clamping mechanism is arranged between the upper end of the sliding part and the locking part, and comprises a clamping block arranged on one of the locking part or the sliding part and a clamping opening arranged on the other of the locking part and the sliding part; in a contraction state, the locking piece deflects towards the inner side to enable the clamping block to be clamped with the bayonet, and the end part of the tooth tip does not exceed the side end of the sliding piece; the tooth joint matching parts are arranged on the left side and the right side of the base in a mirror image manner; the tooth joint matching part comprises fixed teeth which are arranged at intervals, and a tooth groove which can be in tooth joint matching with a tooth tip is formed between every two adjacent fixed teeth; the end of the tooth-connected matching part is also provided with a positioning tooth approaching to the side end of the sliding part; under the initial position, the bilateral locking assembly is in an unfolded state, and in the sliding process of the sliding part relative to the base, the tooth tips of the locking part are sequentially in tooth connection with the tooth sockets so that the sliding part stays at the corresponding positions; when the sliding piece slides to enable the positioning teeth to extrude and act on the locking piece to enable the bilateral locking assembly to be switched from the unfolding state to the contraction state, the sliding piece can be reversely reset to the initial position; the base is also provided with a reset top tooth; when the sliding part is reset to the initial position, the reset top teeth simultaneously extrude and act on the locking part to deflect outwards to enable the clamping block to be separated from the clamping groove, and the bilateral locking assembly is reset to the unfolding state again.

Preferably, the inner end of the single locking piece is provided with a connecting hole; the return spring is horizontally inserted into the connecting hole; the return spring is configured such that each locking member always has a tendency to rotate outwardly to bring the tooth tip into meshing engagement with the tooth socket. Reset spring can act on two locking pieces simultaneously and outwards deflect for the tooth point of locking piece can stabilize the joint in the tooth's socket.

Preferably, the middle part of the base is provided with an accommodating groove for accommodating the sliding part; the sliding piece is in sliding fit in the accommodating groove; the positioning teeth are arranged at the upper end of the tooth joint matching part; the reset top teeth are arranged in the middle of the lower portion of the base.

Preferably, a longitudinal guide groove is concavely arranged at the back end of the sliding piece, and a guide strip protruding forwards is correspondingly arranged in the accommodating groove; the sliding piece is embedded in the accommodating groove and enables the guide strip to be in sliding fit with the guide groove. So that the sliding part can stably slide relative to the base.

Preferably, the sliding part is of a rectangular structure, and a movable sinking groove for connecting the locking part is concavely arranged in the middle of the sliding part; a left shaft column and a right shaft column are arranged in the movable sinking groove in a mirror image mode, and each locking piece is provided with a shaft hole; the locking piece is embedded in the movable sinking groove and enables the shaft column to rotate and penetrate through the shaft hole. So that the locking piece can only deflect inside and outside in the sliding piece; and the locking piece is embedded in the movable sinking groove, so that the thickness of the sliding piece cannot be increased, and the occupied space of the sliding piece cannot be increased.

Preferably, a limiting mechanism is arranged between the locking piece and the sliding piece, and comprises a limiting protrusion arranged on one of the locking piece or the sliding piece and an arc-shaped limiting groove correspondingly arranged on the other of the locking piece or the sliding piece.

Preferably, the sliding part is provided with a telescopic block capable of sliding longitudinally and a telescopic spring capable of elastically stretching and retracting the telescopic block longitudinally at the upper end of each locking part; the fixture block is arranged at the bottom end of the telescopic block, and the bayonet is correspondingly arranged at the top end of the locking piece. The telescopic lug can longitudinally stretch out and draw back, so that the rotating locking piece can deflect to separate the clamping block from the bayonet under the action of external force.

Preferably, an inner portion of a tip end of each lock member protrudes upward to form an arc protrusion on which the bayonet is provided.

Preferably, in a contracted state, the bottom ends of the two locking pieces are attached together, and an upper concave groove is formed between the bottom ends of the two locking pieces; the reset top tooth can be upwards abutted in the groove. Make two locking pieces of the extrusion effect that reset apical tooth can be effectual upwards break away from each other.

Preferably, the rear end of the sliding part is concavely provided with a longitudinal avoidance groove for avoiding the reset top tooth, and the upper end of the avoidance groove penetrates through the sliding part from front to back; the bottom junction of the two locking members can be exposed at the upper end of the avoidance groove. In the reset state, the sliding part resets downwards, the reset top tooth can just be in extrusion contact with the locking part, and the structural design is ingenious; and the sliding part slides, the reset top teeth move in the avoiding groove, and interference between the structures can not occur.

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

the utility model discloses a sliding adjusting module for a seat, wherein a bilateral locking component is arranged on a sliding part, and a tooth joint matching part is arranged on a base; the locking piece is matched with the tooth sockets, so that in the sliding process of the sliding piece, under the action of the return spring, the locking piece can deflect back and forth to enable tooth tips to be in tooth connection with the tooth sockets at different positions in sequence; the sliding piece can stay at different positions, and gear adjustment is achieved. When the sliding part needs to be reset reversely, the positioning teeth can further extrude the locking part only by continuously acting on the sliding part to move, so that the bayonet at the upper end of the locking part is clamped with the chuck of the telescopic block, the bilateral locking assembly is in a contraction state, and the tooth tips and the positioning teeth are staggered left and right and do not interfere with each other; thereby enabling the slide to be moved in reverse to reset.

In addition, the base is provided with a reset fixed tooth, the rear end of the sliding part is concavely provided with a longitudinal avoidance groove for avoiding a reset top tooth, and the upper end of the avoidance groove penetrates through the sliding part from front to back; after the sliding piece is reset reversely, the joint of the bottoms of the two locking pieces can be exposed out of the upper end of the avoidance groove; the reset top tooth can be pressed upwards to act on the two locking pieces to move away from each other, and each locking piece deflects towards the outer side to enable the chuck to be separated from the bayonet; then the reset spring extrudes and acts on the locking piece to reset the tooth tip to the bottom end of the tooth joint matching part; thereby only need to act on the slider and reset in reverse, the locking piece can correspondingly reset to the expansion state, structural design is ingenious.

Drawings

Fig. 1 is a schematic perspective view illustrating a sliding member and a base according to an embodiment of the present invention;

fig. 2 is a schematic perspective view illustrating the sliding member engaged with the base according to the embodiment of the present invention;

fig. 3 is a schematic perspective view illustrating a connection between the sliding member and the base according to an embodiment of the present invention;

fig. 4 is a schematic perspective view of another angle of the connection between the sliding member and the base according to the embodiment of the present invention;

fig. 5 is a schematic perspective view illustrating the engagement between the locking member and the sliding member according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of the tooth tip and tooth groove fit in the sliding process of the sliding member according to the embodiment of the present invention;

fig. 7 is a schematic perspective view of the tooth tip and the tooth socket engaged with each other in the embodiment of the present invention;

fig. 8 is a schematic perspective view of the tooth tip and the positioning tooth of the present invention;

fig. 9 is a schematic perspective view illustrating a sliding member sliding to a position where the chuck engages with a bayonet of the locking member according to an embodiment of the present invention;

fig. 10 is a schematic perspective view of the rear end of the sliding member according to the embodiment of the present invention;

fig. 11 is a schematic perspective view of the bilateral locking assembly in a retracted state according to an embodiment of the present invention.

The figures are numbered: a slider 7; a guide groove 701; a guide bar 702; a fixed seat 8; a base 11; a toothing engagement portion 1101; a lock member 12; a housing groove 13; a lock member 14; the arc convex portion 14a; a return spring 15; a connection hole 1501; a tooth tip 16; a hypotenuse 1601; a fixed tooth 1102; a tooth slot 17; a movable sink 18; a shaft column 19; a shaft hole 20; a limiting bulge 21; a limit groove 22; positioning teeth 23; a telescopic block 24; a chuck 25; a bayonet 26; a tension spring 27; a recess 28; the reset top teeth 29; an avoidance slot 30; a cover plate 31; a vertical slot 32.

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 "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment is described with reference to the orientation of the various components, such as front, rear, etc., in a normal use condition with the user seated in the seat.

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

as shown in fig. 1-11, the sliding adjustment module for a seat provided by the present invention comprises a sliding member 7 and a base 11, wherein the sliding member 7 is slidably fitted in the base 11; the sliding part 7 can slide along the base 11 in a reciprocating manner from an initial position and reset to the initial position after sliding; and the sliding piece 7 has a plurality of gear positions in the sliding process.

Specifically, the method comprises the following steps: as shown in fig. 1-4, a containing groove 13 for containing the sliding member 7 is provided in the middle of the base 11; a longitudinal guide groove 701 is concavely arranged at the back end of the sliding piece 7, and a guide strip 702 protruding forwards is correspondingly arranged in the accommodating groove 13; the sliding piece 7 is embedded in the containing groove 13, and the guide strip 702 is in sliding fit with the guide groove 701; so that the slider 7 can stably slide relative to the base 11.

As shown in fig. 3 to 7, a bilateral locking assembly is provided on the slider 7, and comprises locking members 14 arranged on the slider 7 in a left-right mirror image manner, and a return spring 15 transversely connected between the two locking members 14. Wherein said blocking elements 14 are rotatably connected to the slider 7, each blocking element 14 having a tooth tip 16 projecting towards the outside; correspondingly, the base 11 is provided with longitudinal tooth joint matching parts 1101 respectively at the left side and the right side of the sliding part 7; the tooth-jointed matching part 11 comprises fixed teeth 1102 arranged at intervals, and a tooth groove 17 capable of being in tooth-jointed matching with a tooth tip 16 is formed between every two adjacent fixed teeth 1102; further, the method comprises the following steps: the sliding part 7 is in a rectangular structure, and a movable sinking groove 18 for connecting the locking part 14 is concavely arranged in the middle position of the sliding part 7; a left shaft column 19 and a right shaft column 19 are arranged in the movable sinking groove 18, and a shaft hole 20 is correspondingly arranged on the locking piece 14; the locking piece 14 is embedded in the movable sinking groove 18 so that the shaft column 19 is rotatably arranged in the shaft hole 20 in a penetrating way, and the locking piece 14 can only deflect inwards and outwards in the sliding piece 7; and the locking piece 14 is embedded in the movable sinking groove 18, so that the thickness of the sliding piece 7 is not increased, and the occupied space of the sliding piece 7 is not increased. Moreover, the tooth tip 16 is in a triangular structure protruding outwards, the locking member 14 can rotate to enable the tooth tip 16 to protrude outwards from the sliding member 7, or the locking member 14 can rotate inwards to retract so that the end of the tooth tip 16 does not protrude from the side end of the sliding member 7, so that the bilateral locking assembly has an expanded state and a retracted state.

And a limiting mechanism is arranged between the locking piece 12 and the sliding piece 7, and comprises a limiting bulge 21 arranged at the rear end of the locking piece 12 and an arc-shaped limiting groove 22 correspondingly arranged on the sliding piece 7, so that the locking piece 12 can only rotate within a certain range. Further, the inner side end of the single locking piece 12 is provided with a connecting hole 1501; the return spring 15 horizontally penetrates into the connecting hole; the return spring 15 is configured such that each latch member 14 always has a tendency to rotate outwardly with the tines 16 in toothed engagement with the gullets 17, the return spring 15 being capable of simultaneously acting on both latch members 14 to deflect outwardly.

The tooth sockets 17 are arranged at intervals along the length direction of the base, and the shape of the tooth sockets 17 is matched with the shape of the tips of the tooth tips 16; the tooth point 16 has a beveled edge 1601 for press-fitting with the fixed tooth 1102; then, when the sliding member 7 slides relative to the base 1, the locking member 14 will follow the sliding member 7; as shown in fig. 6, the sloping edge 1601 of the tooth tip 16 will press-fit with the fixed tooth 1102 to deflect the lock member 14 inward so that the tooth tip 16 can be moved upward out of the tooth slot 17 in the current position; and the return spring 15 is correspondingly extruded and deformed; as shown in fig. 7, after the sliding member 7 slides a certain distance, the locking member 14 will deflect outward again under the elastic force of the return spring 15, so that the tooth tip 16 is engaged in the tooth socket 17 at the next position, and the tooth tip 16 and the tooth socket 17 can limit the reverse return of the sliding member 7, so as to achieve the backstop effect; thereby enabling the slider 7 to be locked in this position. In turn, the slider 7 is allowed to slide and stay at a plurality of positions relative to the base 1, enabling multi-step adjustment. And the actions of the locking piece 14 and the tooth grooves 17 are performed spontaneously along with the sliding of the sliding piece 7 in the process, and any switch is not needed for control.

As shown in fig. 5-11, when the tooth tip 16 is engaged with the tooth slot 17 near the end of the engagement portion 1101, the sliding member 7 is locked at the farthest stroke position, and if the sliding member 7 needs to be moved reversely and reset, the sliding member 7 only needs to be moved continuously; specifically, the method comprises the following steps: the upper end of the tooth joint matching part 1101 on each side is also provided with a positioning tooth 23 protruding towards the inner side, and the tip end of the positioning tooth 23 approaches to the side end of the sliding piece 7; when the sliding part 7 needs to move downwards for resetting, the sliding part 7 continues to move upwards; the positioning tooth 23 will be in pressing engagement with the beveled edge 1601 of the tooth tip 16 and the positioning tooth 23 will act to deflect the locking member 14 further inwardly. A telescopic block 24 and a telescopic spring 27 which enables the telescopic block 24 to elastically stretch and contract in the longitudinal direction are further arranged at the upper end of each locking piece 14 on the sliding piece 7; a chuck 25 protruding downwards is arranged at the bottom end of the telescopic block 24; each locking member 14 has an upwardly projecting arcuate projection 14a at its tip near the center of the slider 7, and the arcuate projection 14a is provided with a bayonet 26 capable of engaging with the chuck 25 in a toothed manner. During the process of moving the sliding member 7 upwards, as shown in fig. 8, the positioning teeth 23 will act on the locking member 14 to deflect inwards, so that the chuck 25 is in pressing fit with the arc convex part 14a, and the telescopic block 24 rises elastically and has a tendency to move downwards again; when the locking piece 14 is deflected inward until the end of the tooth tip 16 is located inside the side end of the sliding piece 7, as shown in fig. 9, the chuck 25 will be engaged with the bayonet 26, so as to lock the locking piece 14; at the moment, the bilateral locking assembly is in a contraction state, the tooth tip 16 and the positioning tooth 23 are staggered left and right, and the two do not interfere; thereby enabling the slide 7 to be reset down. Dop 25 can lock rotation locking piece 14 in the shrink state with bayonet 26 cooperation, and because flexible piece 24 can vertically stretch out and draw back for under the exogenic action, rotation locking piece 14 can deflect so that location 25 tooth breaks away from bayonet 26.

As shown in fig. 3, 4, 9-11, when in the contracted state, the bottom ends of the left and right lock members 14 will abut against each other, and a concave groove 28 is formed between the bottom ends of the two lock members 14; a reset top tooth 29 is arranged in the middle of the lower portion of the base 11, a longitudinal avoidance groove 30 for avoiding the reset top tooth 29 is arranged at the back end of the sliding member 7, and the upper end of the avoidance groove 30 penetrates through the sliding member 7 in the front-back direction, so that in a contraction state, the joint of the bottoms of the two locking members 14 can be just exposed out of the upper end of the avoidance groove 30; then, after the sliding member 7 moves downwards and returns to the bottom end of the base 11, the returning top tooth 29 can just top up in the groove 28 at the lower end of the two locking members 14, and the returning top tooth 29 can press upwards to act on the two locking members 14, so that each locking member 14 deflects outwards, and the chuck 25 is separated from the bayonet 26; the latch 14 is then deflected further outwardly by the return spring 15, causing the tooth point 16 to reset to the bottom end of the toothed engagement portion 1101 and the double sided locking assembly to reset to the deployed condition again.

As shown in fig. 1, a cover plate 31 is further connected to the front end of the base 11, and the cover plate 31 can prevent the slider 7 from being detached from the base 11, and can hide the connection trace, thereby making the structure beautiful. And the sliding part 7 is provided with a fixed seat 8 protruding out of the cover plate 31; the cover plate 31 is correspondingly provided with a vertical groove 32 which moves up and down to avoid the fixed seat 8. The sliding adjusting module of the seat of the utility model can be applied to the movable adjusting part of the seat, such as a waist rest or a headrest; the base is arranged on the chair back, and the waist support or the headrest is arranged on the fixed seat 8, so that the lifting adjustment of the waist support and the headrest can be realized. As can be seen from the above, the slider 7 can move up and down to return to the original position in the sliding engagement portion 7 in a reciprocating manner; thereby enabling the waist rest or the headrest to move, adjust and reset circularly and reciprocally; in the adjusting operation process, any other switch is not required to be controlled; the adjustment is simple and convenient, and the feeling of high grade is better.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. A sliding adjustment module for seating furniture, comprising:

the sliding piece is in sliding fit in the base;

the bilateral locking assembly is arranged on the sliding piece; the bilateral locking assembly comprises locking pieces arranged in a left mirror image and a right mirror image and a return spring transversely connected between the two locking pieces; the locking piece is rotationally connected to the sliding piece; the locking piece is provided with a tooth tip protruding towards the outside; the bilateral locking assembly has an expansion state and a contraction state, and under the expansion state, the tooth tips of the two locking pieces respectively protrude outwards from the side end of the sliding piece; a clamping mechanism is arranged between the upper end of the sliding piece and the locking piece, and the clamping mechanism comprises a clamping block arranged on one of the locking piece or the sliding piece and a clamping opening arranged on the other of the locking piece or the sliding piece; in a contraction state, the locking piece deflects towards the inner side to enable the clamping block to be clamped with the clamping opening, and the end part of the tooth tip does not exceed the side end of the sliding piece;

the tooth joint matching parts are arranged on the left side and the right side of the base in a mirror image manner; the tooth joint matching part comprises fixed teeth which are arranged at intervals, and a tooth groove which can be in tooth joint matching with a tooth tip is formed between every two adjacent fixed teeth; the end of the tooth-connected matching part is also provided with a positioning tooth approaching to the side end of the sliding part;

under the initial position, the bilateral locking assembly is in an unfolded state, and in the sliding process of the sliding piece relative to the base, the tooth tips of the locking piece are sequentially in tooth connection with the tooth grooves so that the sliding piece stays at the corresponding position; when the sliding piece slides to enable the positioning teeth to extrude and act on the locking piece to enable the bilateral locking assembly to be switched from the unfolding state to the contraction state, the sliding piece can be reversely reset to the initial position; the base is also provided with a reset top tooth; when the sliding part is reset to the initial position, the reset top teeth simultaneously extrude and act on the locking part to deflect outwards to enable the clamping block to be separated from the clamping groove, and the bilateral locking assembly is reset to the unfolding state again.

2. A sliding adjustment module for seating furniture according to claim 1, characterised in that: the inner side end of each locking piece is provided with a connecting hole; the return spring is horizontally inserted into the connecting hole; the return spring is configured so that each lock always has a tendency to rotate outwardly to bring the tooth tip into toothed engagement with the tooth slot.

3. The sliding adjustment module for a seat as claimed in claim 1, characterized in that: the middle part of the base is provided with a containing groove for containing the sliding part; the sliding piece is in sliding fit in the accommodating groove; the positioning teeth are arranged at the upper end of the tooth joint matching part; the reset top teeth are arranged in the middle of the lower portion of the base.

4. A sliding adjustment module for seating furniture according to claim 3, characterised in that: the back end of the sliding piece is concavely provided with a longitudinal guide groove, and a guide strip protruding forwards is correspondingly arranged in the accommodating groove; the sliding piece is embedded in the containing groove and enables the guide strip to be in sliding fit with the guide groove.

5. A sliding adjustment module for seating furniture according to claim 1, characterised in that: the sliding piece is of a rectangular structure, and a movable sinking groove used for being connected with the locking piece is concavely arranged in the middle of the sliding piece; a left shaft column and a right shaft column are arranged in the movable sinking groove in a mirror image mode, and each locking piece is provided with a shaft hole; the locking piece is embedded in the movable sinking groove and enables the shaft column to rotate to penetrate through the shaft hole.

6. A sliding adjustment module for seating furniture according to claim 5, characterized in that: and a limiting mechanism is arranged between the locking piece and the sliding piece, and comprises a limiting protrusion arranged on one of the locking piece or the sliding piece and an arc-shaped limiting groove correspondingly arranged on the other of the locking piece or the sliding piece.

7. A sliding adjustment module for seating furniture according to claim 1, characterised in that: the upper end of each locking piece on the sliding piece is provided with a telescopic block capable of sliding longitudinally and a telescopic spring capable of elastically stretching the telescopic block longitudinally; the fixture block is arranged at the bottom end of the telescopic block, and the bayonet is correspondingly arranged at the top end of the locking piece.

8. The sliding adjustment module for a seat as claimed in claim 7, characterized in that: the inner portion of the top end of each locking piece protrudes upwards to form an arc convex portion, and the bayonet is arranged on the arc convex portion.

9. A sliding adjustment module for seating furniture according to claim 1, characterised in that: in a contraction state, a concave groove is formed between the lower ends of the two locking pieces; the reset top tooth can be upwards abutted in the groove.

10. A sliding adjustment module for seating furniture according to claim 9, characterized in that: the rear end of the sliding piece is concavely provided with a longitudinal avoidance groove for avoiding the reset top tooth, and the upper end of the avoidance groove penetrates through the sliding piece from front to back; the bottom junction of the two locking members can be exposed at the upper end of the avoidance groove.

Images