CN221060109U - Locking adjusting device - Google Patents

Abstract

The utility model provides a locking and adjusting device which comprises a sliding connecting seat, a supporting seat and a locking component arranged between the sliding connecting seat and the supporting seat, wherein the locking component comprises a limiting block, a rotating rod and an adjusting spanner; when the locking state is converted to the unlocking state, the adjusting spanner is pulled to enable the rotating rod to rotate and drive the limiting block to deflect so that the limiting block deviates from the sliding track of the sliding connecting seat, at the moment, the sliding of the sliding connecting seat is not blocked, the switching between the locking state and the unlocking state of the locking assembly can be realized only by pulling the adjusting spanner, the operation mode is simple and quick, the connection mode of the inner structure of the locking adjusting device is simple, and the locking of the chair back sliding rail-changing mechanism is effectively realized.

Description

Locking adjusting device

Technical Field

The utility model relates to the field of seats, in particular to a locking and adjusting device for a chair back sliding rail-changing mechanism.

Background

With the rapid development of society, the seat is one of the tools with extremely high use frequency in daily life, and the demands of people on all aspects of the seat are increasing, so that various seats suitable for different use environments are produced on the market under the background demands, and the seats which have high matching degree with the human posture change and accord with the human engineering are becoming popular in recent years.

At present, a chair back of some chairs which can be reclined in the market can rotate in a certain range, when a user sits on the chair to enable the chair back to recline, the distance between the chair back and the chair seat is changed due to the fact that the whole chair back is backwards, the position of the chair seat is unchanged, therefore, relative displacement and friction between the chair back and the back of the user can generate uncomfortable feeling, and meanwhile, the waist of the user cannot be matched with the waist support position on the chair back after the chair back is reclined, so that the use experience of a suspended state of the waist is greatly reduced; when a user actually uses the seat, the back is not kept unchanged, and the front and back positions of the back can be correspondingly changed along with the change of the sitting posture; the chair back of the conventional chair can only longitudinally slide to adjust the height of the chair back at most, so that the chair back cannot be effectively attached to the back of a user in the actual use process.

Based on the existing problems, the applicant designs a chair back sliding rail-changing mechanism, by setting a sliding connecting seat capable of sliding up and down on the chair back of the chair, the sliding connecting seat is arranged on the chair back support and slides up and down along the chair back support, the sliding connecting seat is rotationally connected with the chair back, a rotating support component is arranged between the chair back and the chair back support, and the rotating support component is rotationally connected with the chair back support and the chair back respectively, when a user sits on the chair and leans backwards, the back of the user leans against the chair back to enable the chair back to rotate backwards, meanwhile, the sliding connecting seat moves downwards along the chair back support, and the rotating support component synchronously rotates along with the chair back and guides the lower end of the chair back to move forwards so as to better support the waist of the user.

The chair back sliding rail-changing mechanism can enable the chair back to correspondingly move downwards and the lower end of the chair back to incline forwards due to the change of the human body leaning back degree, and in the use process, some users only need to incline backwards in compliance without changing the chair back, and under the condition, the user needs to arrange a locking and adjusting device on the chair back sliding rail-changing mechanism so that the user can control the sliding connecting seat not to move downwards to lock the chair back, the chair back does not move downwards and the lower end of the chair back inclines forwards, and the application range of the chair back sliding rail-changing mechanism is enlarged.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide the locking adjusting device, the locking assembly is additionally arranged in the chair back sliding rail transfer mechanism to lock the sliding connecting seat, the locking assembly comprises the limiting block, the rotating rod and the adjusting wrench, the limiting block is sleeved on the rotating rod and can be abutted against the sliding connecting seat along the rotation of the rotating rod in the longitudinal direction to lock the sliding connecting seat, the switching between the locking state and the unlocking state of the locking assembly can be realized by pulling the adjusting wrench, the operation mode is simple, convenient and quick, the connection mode of the internal structure of the locking adjusting device is simple, and the locking of the chair back sliding rail transfer mechanism is effectively realized.

The technical scheme of the utility model is realized as follows:

The locking and adjusting device comprises a sliding connecting seat, a supporting seat and a locking assembly arranged between the sliding connecting seat and the supporting seat, wherein the locking assembly comprises a limiting block, a rotating rod and an adjusting spanner, the limiting block is sleeved on the rotating rod, one end of the rotating rod is fixedly connected with the adjusting spanner, the locking assembly is provided with a locking state and an unlocking state, and the limiting block props against the sliding connecting seat in the longitudinal direction under the locking state so as not to slide up and down; when the locking state is switched to the unlocking state, the adjusting spanner is pulled to enable the rotating rod to rotate and drive the limiting block to deflect so that the limiting block deviates from the sliding track of the sliding connecting seat, and at the moment, the sliding of the sliding connecting seat is not blocked.

Preferably, the sliding connection seat is provided with a limit groove matched with the limit block in a clamping position along the longitudinal direction, and the limit block is abutted against the limit groove after synchronously rotating along with the rotating rod so that the sliding connection seat is in a locking state. The cooperation structure of stopper and spacing groove is simple, realizes the degree of difficulty low.

Preferably, the bottom of the sliding connecting seat is outwards protruded to form a limit groove, or the sliding connecting seat is inwards recessed to form a limit groove. The limiting groove is positioned at the lower position of the sliding connecting seat, so that the limiting block can be quickly abutted to the top of the limiting groove after rotating, and the sliding connecting seat is limited to slide up and down.

Preferably, one end of the limiting block is extended to form an extension section, the diameter of the upper end of the extension section is reduced to form an abutting part, and the abutting part is abutted outwards against the top of the limiting groove after rotating along with the rotating rod so that the sliding connecting seat cannot slide up and down. The arrangement of the extension section enables the extension section to be abutted to the sliding connecting seat only by rotating a small angle, and a certain movable space is reserved when the abutment part with the reduced diameter abuts against the sliding connecting seat.

Preferably, the locking assembly further comprises a control member, and the control member is configured to control the limiting block to rotate to abut against the sliding connecting seat and fix the clamping position of the limiting block. The control piece is convenient for fixing the position of the limiting block in the locking state and the unlocking state.

Preferably, the control member is a rotation clamping block, the rotation clamping block is sleeved on the rotating rod and synchronously rotates with the limiting block, a first limiting part and a second limiting part are arranged on the rotation clamping block, a first limiting protrusion and a second limiting protrusion are arranged along the circumferential direction, a clamping member is arranged at a position corresponding to the rotation clamping block in the supporting seat, a first anti-slip part and a second anti-slip part which are in butt joint with the first limiting part and the second limiting part are arranged on the clamping member, a limiting groove matched with the limiting protrusion is further arranged on the clamping member, the adjusting spanner is pulled to enable the rotating rod to rotate, and the rotation clamping block synchronously rotates along with the rotating rod and enables the first limiting protrusion and the second limiting protrusion to be clamped and switched in the limiting groove. The limiting part on the rotating clamping block is matched with the anti-slip part on the clamping piece to contact the clamping position, so that the limiting protrusion is switched back and forth in the limiting groove more stably, and the limiting block is fixed at the corresponding position after rotating.

Preferably, when the locking assembly is in an unlocking state, the first limiting part is contacted with the first anti-slip part, the first limiting protrusion is clamped into the limiting groove to fix the clamping position, and the limiting block is not abutted against the sliding connecting seat; when the locking component is switched from the unlocking state to the locking state, the adjusting spanner is pulled to enable the second limiting part to be in contact with the second anti-slip part, the first limiting protrusion is separated from the limiting groove, the second limiting protrusion is clamped into the limiting groove to fix the clamping position, and the limiting block rotates to a position of abutting against the sliding connecting seat and is fixed. When the locking component is switched between the unlocking state and the locking state, the adjusting spanner is pulled to adjust, so that the operation is simple and quick, and errors are not easy to occur.

Preferably, the supporting seat is inwards recessed to form a containing groove, and the limiting block is positioned in the containing groove and does not rotate when the locking assembly is in an unlocking state. When the locking component is switched from the unlocking state to the locking state, the limiting block rotates outwards from the accommodating groove to be abutted against the sliding connecting seat.

Preferably, the rotating rod is a plug rod, one end of the adjusting spanner, which is close to the rotating rod, is inwards sunken to form a plug groove matched with the plug rod, and the plug rod is inserted into the plug groove to realize the fixed connection between the adjusting spanner and the rotating rod. After the adjusting wrench is pulled by the cooperation of the inserted link and the inserting groove, the rotating link can rotate with the cloth along with the angle of the wrench.

Preferably, the cross section of the insertion rod is polygonal, and the cross section of the insertion groove is polygonal correspondingly matched with the insertion rod. The design of the polygonal section is convenient for a user to control when pulling the adjusting spanner, and the spanner cannot be pulled too much or pulled in place.

The principle and beneficial effects of the utility model adopting the technical scheme are as follows:

The utility model provides a locking and adjusting device which comprises a sliding connecting seat, a supporting seat and a locking component arranged between the sliding connecting seat and the supporting seat, wherein the locking component comprises a limiting block, a rotating rod and an adjusting spanner; when the locking state is converted to the unlocking state, the adjusting spanner is pulled to enable the rotating rod to rotate and drive the limiting block to deflect so that the limiting block deviates from the sliding track of the sliding connecting seat, at the moment, the sliding of the sliding connecting seat is not blocked, the switching between the locking state and the unlocking state of the locking assembly can be realized only by pulling the adjusting spanner, the operation mode is simple and quick, the connection mode of the inner structure of the locking adjusting device is simple, and the locking of the chair back sliding rail-changing mechanism is effectively realized.

Drawings

FIG. 1 is an overall perspective view of a chair back sliding track change mechanism;

FIG. 2 is a partial exploded view of a sliding track-change mechanism of a seat back;

FIG. 3 is an exploded view of the connection location of the slide connection base and the locking assembly;

FIG. 4 is a perspective view of the limit block and control member;

FIG. 5a is a partial view of the contact position of the rotating detent block and the detent member in the unlocked state;

FIG. 5b is a partial view of the contact position of the rotating detent block and the detent member in the locked state;

FIG. 6 is a cross-sectional view of the stop block in the receiving slot;

FIG. 7 is a cross-sectional view of the stop block abutting the slide connection seat;

FIG. 8 is a side view of the initial state of the chair back sliding track change mechanism;

FIG. 9 is a side view of the chair back sliding track change mechanism after being moved down;

FIG. 10 is a perspective exploded view of the chair back sliding track change mechanism;

FIG. 11a is a partial schematic view of a rotary support assembly;

FIG. 11b is a partial exploded view of the locking assembly;

FIG. 12 is a perspective exploded view of the support base;

FIG. 13a is a perspective exploded view of the back cover of the support base;

FIG. 13b is a perspective exploded view of the front cover of the support base;

FIG. 14a is a partial schematic view of a damping adjustment assembly;

FIG. 14b is another partial schematic view of a damping adjustment assembly;

FIG. 15 is a partial exploded view of the damper adjustment assembly;

The reference numerals are as follows:

100-the chair back is provided with a chair,

200-Chair back support, 210-supporting seat, 211-containing groove, 212-supporting front cover, 213-supporting rear cover, 214-plug-in unit, 215-socket, 216-slide groove, 217-slide bar, 218-connecting block, 219-screw hole, 220-connecting section, 221-fixing hole,

300-Sliding connection seat, 310-limit groove, 320-sliding seat, 321-opening, 330-rotation support component, 331-support connection seat, 332-rotation piece, 333-connection seat main body, 334-support portion, 335-base plate, 336-side plate,

400-Damping adjustment assembly, 410-elastic member, 411-spring, 420-adjustment member, 421-threaded rod, 422-knob, 430-adjustment slider, 431-threaded opening, 440-adjustment base, 441-through slot, 442-notch, 443-plug-in opening, 450-cover plate, 451-plug-in rod, 460-groove, 461-half groove,

500-Locking component, 510-limit block, 511-extension section, 512-abutting part, 520-rotating rod, 521-inserting rod, 530-adjusting spanner, 531-inserting groove, 540-control piece, 541-rotating clamping block, 542-first limit part, 543-second limit part, 544-first limit protrusion, 545-second limit protrusion, 550-clamping piece, 551-first limit part, 552-second limit part, 553-limit groove,

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

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

The specific embodiments of the present utility model are as follows:

As shown in fig. 1-7, a locking and adjusting device comprises a sliding connection seat 300, a support seat 210 and a locking assembly 500 arranged between the sliding connection seat 300 and the support seat, wherein the locking assembly 500 comprises a limiting block 510, a rotating rod 520 and an adjusting wrench 530, the limiting block 510 is sleeved on the rotating rod 520, one end of the rotating rod 520 is fixedly connected with the adjusting wrench 530, the locking assembly 500 is provided with a locking state and an unlocking state, in the locking state, the sliding connection seat 300 is provided with a limiting groove 310 which is matched with the limiting block 510 in a clamping way along the longitudinal direction, and the limiting block 510 abuts against the limiting groove 310 in the longitudinal direction after synchronously rotating along with the rotating rod 520 so that the sliding connection seat 300 cannot slide up and down, the limiting block 510 and the limiting groove 310 are mutually matched with each other, so that the difficulty is low; when the locking state is switched to the unlocking state, the adjusting wrench 530 is pulled to rotate the rotating rod 520 and drive the limiting block 510 to deflect so as to deviate from the sliding track of the sliding connecting seat 300, and at the moment, the sliding of the sliding connecting seat 300 is not blocked.

Specifically, as shown in fig. 3, the bottom of the sliding connection seat 300 is protruded to form a limit groove 310, or the sliding connection seat 300 is recessed to form a limit groove 310, and the limit groove 310 is located at a lower position of the sliding connection seat 300 to facilitate the rotation of the limit block 510 and then rapidly abuts against the top of the limit groove 310, so as to limit the up-down sliding of the sliding connection seat 300.

Further, as shown in fig. 3-5b, one end of the limiting block 510 is extended to form an extension section 511, the extension section 511 is arranged so that the extension section 511 can be abutted to the sliding connection seat 300 only by rotating by a small angle, the diameter of the upper end of the extension section 511 is reduced to form an abutting portion 512, and the abutting portion 512 abuts against the top of the limiting groove 310 outwards after rotating along with the rotating rod 520 so that the sliding connection seat 300 cannot slide up and down, and a certain movable space is reserved for the abutting portion 512 with the reduced diameter when the limiting block 510 abuts against the sliding connection seat 300.

Further, as shown in fig. 4-5b, the locking assembly 500 further includes a control member 540, wherein the control member 540 is configured to control the stopper 510 to rotate to abut against the sliding connection seat 300 and fix the stopper 510. The control member 540 is convenient for fixing the position of the limiting block 510 in the locking state and the unlocking state, the control member 540 is specifically a rotating clamping block 541, the rotating clamping block 541 is sleeved on the rotating rod 520 and rotates synchronously with the limiting block 510, the rotating clamping block 541 is provided with a first limiting part 542 and a second limiting part 543 and is provided with a first limiting protrusion 544 and a second limiting protrusion 545 along the circumferential direction, a clamping part 550 is arranged in a position corresponding to the rotating clamping block 541 in the supporting seat, a first sliding stop 551 and a second sliding stop 552 which are in abutting fit with the first limiting part 542 and the second limiting part 543 are arranged on the clamping part 550, a limiting groove 553 which is matched with the limiting protrusion is also arranged on the clamping part 550, the adjusting spanner 530 is pulled to enable the rotating rod 520 to rotate synchronously, the limiting part on the rotating clamping block 541 is enabled to be in the limiting groove for clamping switching between the first limiting protrusion 544 and the second limiting protrusion 545, and the sliding stop part on the clamping part 550 are in contact with the clamping part on the clamping part 550, so that the limiting protrusion is enabled to be in the groove to be more stable and not to shift in the limiting position to be fixed after the limiting part 510 is switched; when the locking assembly 500 is in the unlocking state, the first limiting part 542 contacts with the first sliding stopping part 551, the first limiting protrusion 544 is clamped into the limiting groove 553 to fix the clamping position, and at the moment, the limiting block 510 is not abutted against the sliding connecting seat 300; when the locking assembly 500 is switched from the unlocking state to the locking state, the adjusting wrench 530 is pulled to enable the second limiting part 543 to be in contact with the second sliding-stop part 552, the first limiting protrusion 544 is separated from the limiting groove 553, the second limiting protrusion 545 is clamped into the limiting groove 553 to fix the clamping position, and the limiting block 510 rotates to a position abutting against the sliding connecting seat 300 and is fixed. When the locking assembly 500 is switched between the unlocking state and the locking state, the adjustment is performed by pulling the adjusting wrench 530, so that the operation is simple and quick, and errors are not easy to occur.

Further, as shown in fig. 6 to 7, the supporting seat 210 is recessed inward to form a receiving groove 211, and when the locking assembly 500 is in the unlocked state, the stopper 510 is located in the receiving groove 211 and does not rotate. When the locking assembly 500 is switched from the unlocked state to the locked state, the limiting block 510 rotates outwards from the accommodating groove 211 to abut against the sliding connection seat 300.

Further, as shown in fig. 3, the rotating rod 520 is a plug rod 521, one end of the adjusting wrench 530, which is close to the rotating rod 520, is recessed inwards to form a plug groove 531 matched with the plug rod 521, the plug rod 521 is inserted into the plug groove 531 to realize the fixed connection between the adjusting wrench 530 and the rotating rod 520, and after the adjusting wrench 530 is pulled by the matching of the plug rod 521 and the plug groove 531, the rotating rod 520 can rotate with the cloth along with the angle pulled by the wrench; the cross section of the inserted bar 521 is polygonal, the cross section of the insertion groove 531 is polygonal corresponding to the inserted bar 521, and the polygonal cross section is designed to be more controllable when the user pulls the adjusting wrench 530, so that the user cannot pull the wrench too much or pull the wrench too little.

As shown in fig. 8 to 15, the chair back sliding rail-changing mechanism is composed of a chair back 100, a chair back support 200 and a sliding connection seat 300 arranged between the two, the chair back 100 can slide downwards through sliding and rotating cooperation and can rotate around a pivot to enable the chair back 100 to incline, the sliding connection seat 300 comprises a sliding seat 320 capable of sliding upwards and downwards along the chair back support 200 and a rotating support assembly 330 rotatably connected with the chair back 100, the rotating support assembly 330 is arranged between the chair back support 200 and the chair back 100, and the rotating support assembly 330 is simultaneously rotatably connected with the chair back support 200 and the chair back 100, so that when the sliding seat 320 slides downwards along the chair back support 200, the chair back 100 rotates backwards around the pivot rotatably connected with the rotating support assembly 330, and the lower end of the chair back 100 moves forwards upwards due to rotation to better support the human waist, and the posture of the chair back is matched with the backward tilting posture change.

Further, as shown in fig. 10-11b, the rotary support assembly 330 includes a support connection seat 331 and a rotary member 332 fixedly connected to the middle of the rear end of the chair back 100, the support connection seat 331 has an overall L-shape, the vertical side of the L-shape is a connection seat main body 333, and the lower end of the connection seat main body 333 extends forward to form a support portion 334; the two sides of the upper end of the connecting seat main body 333 are respectively and rotatably connected with the two sides of the sliding seat 320, the two sides of the supporting part 334 are respectively and rotatably connected with the two sides of the front end of the rotating part 332, the rotating part 332 is positioned below the sliding seat 320, and the two sides of the rear end are rotatably connected with the two sides of the chair back bracket 200; the connection seat main body 333 comprises a base plate 335 attached to the chair back 100, and side plates 336 extending from both sides of the base plate 335, wherein the base plate 335 and the side plates 336 together form the connection seat main body 333, and the supporting portion 334 is formed by extending the lower ends of the side plates 336 forward; the base plate 335 and the side plates 336 enclose a receiving space, the sliding seat 320 is located in the receiving space and rotatably connected to the side plates 336 at both sides by a rotation pin, and when the sliding seat 320 slides up and down along the seat back bracket 200 while the seat back 100 rotates, a gap for the seat back 100 to rotate needs to be left between the front surface of the sliding seat 320 and the base plate 335.

Further, as shown in fig. 12-13b, a supporting seat 210 is provided on the back support 200 along the longitudinal direction, the supporting seat 210 includes a supporting front cover 212 and a supporting rear cover 213, wherein the supporting rear cover 212 is fixedly connected to the back support 200, the supporting front cover 212 is connected to a side of the supporting rear cover 213 facing the back 100 and mounts a sliding seat 320 on the supporting front cover 212, a plurality of inserts 214 are provided on a surface of the supporting front cover 212 facing the supporting rear cover 213, a plurality of sockets 215 matching with the inserts 214 are provided on corresponding positions on the supporting rear cover 213, and the supporting front cover 212 and the supporting rear cover 213 are assembled in a plugging manner and fixed by screws.

Further, as shown in fig. 12-13b, a sliding groove 216 is longitudinally arranged on the surface of the front support cover 212 facing the sliding seat 320, a sliding rod 217 is movably arranged in the sliding groove 216, a connecting block 218 for installing the sliding rod 217 is arranged in the sliding groove 216, the sliding rod 217 can slide along a preset track in the sliding groove 216, the connecting block 218 is sleeved on the sliding rod 217, and the sliding rod 217 can axially move along the connecting block 218; a screw hole 219 is formed in the surface, which is attached to the sliding groove 216, of the connecting block 218, and the connecting block 218 is fixedly arranged in the sliding groove 216 through a screw; after the slide bar 217 and the slide groove 216 are installed, a connecting section 220 is set up at a position between two connecting blocks 218 on the slide bar 217 to limit a sliding section of the slide bar 217 in the slide groove 216, the connecting section 220 is a limiting block welded on the slide bar 217 or is formed by flattening the middle part of the slide bar 217, and the width of the connecting section 220 is slightly larger than the diameter of the slide bar 217, so that the movable section of the slide bar 217 in the longitudinal direction is limited; the middle part of the connecting section 220 is provided with a fixing hole 221, and an opening 321 is arranged at a corresponding position on the sliding seat 320, and the fixing hole 221 is connected with the opening 321 through a screw to realize synchronous sliding of the sliding seat 320 and the sliding rod 217, so that the sliding seat 320 is arranged on the supporting front cover 212 in a sliding manner and slides up and down relative to the supporting front cover 212.

Further, as shown in fig. 12, the chair back sliding rail-changing mechanism further includes a damping adjustment assembly 400, the damping adjustment assembly 400 includes an elastic member 410, and an adjusting member 420 for adjusting the tightness of the elastic member 410, one end of the elastic member 410 is acted by the adjusting member 420, the other end of the elastic member 410 acts on the sliding connection seat 300, and after the sliding connection seat 300 slides downward, the elastic member 410 responds to the sliding of the sliding connection seat 300 and deforms to generate a restoring elastic force for the sliding connection seat 300.

14A-15, the damping adjustment assembly further includes an adjustment slider 430 and an adjustment base 440, wherein a through groove 441 is formed in a middle portion of the adjustment base 440, the adjustment slider 430 is clamped into the through groove 441 along a longitudinal direction and slides up and down in the through groove 441, an upper end of the adjustment member 420 is fixed to a top of the adjustment base 440, a lower end of the adjustment member 420 is slidably connected with the adjustment slider 430, and the adjustment member 420 is adjusted to enable the adjustment slider 430 to slide correspondingly. The position of the adjusting piece is fixed by the adjusting base, so that the adjusting piece cannot shift in the using process, the adjusting slide block slides up and down in the adjusting base under the action of the adjusting piece, and the adjusting piece is convenient to adjust the elastic piece.

14A-15, the bottom of the adjusting member 420 is a threaded rod 421, the top of the adjusting member 420 is a knob 422, a threaded hole 431 matched with the threaded rod 421 is formed in the top of the adjusting slider 430 along the longitudinal direction, a notch 442 for fixing the knob 422 is formed in the top of the adjusting base 440, the knob 422 rotates to drive the threaded rod 421 to rotate up and down in the threaded hole 431 so as to enable the adjusting slider 430 to slide up and down, and the threaded rod 421 is controlled to move up and down in the threaded hole 431 by rotating the knob 422, so that the adjusting slider 430 correspondingly slides, and each connecting structure is simple and operation is convenient; meanwhile, a cover plate 450 is arranged on one surface of the adjusting base 440, facing the sliding connecting base 300, a plurality of inserting ports 443 are arranged on the adjusting base 440, a plurality of inserting rods 451 which are arranged in a protruding mode and are correspondingly matched with the inserting ports 443 are arranged on the cover plate 450, after the knob 422 is clamped into the notch 442, the inserting rods 451 are inserted into the inserting ports 443 to fixedly connect the cover plate 450 with the adjusting base 440 and fix the knob 422, and the position of the adjusting piece 420 is fixed and the adjusting piece 420 is protected from being affected by the adjusting of the adjusting piece 420.

Further, as shown in fig. 3 and 12, a half groove 461 is formed by recessing one surface of the sliding connection seat 300 facing the supporting seat 200, a half groove 461 is formed by recessing one surface of the supporting seat 200 facing the sliding connection seat 300, the two half grooves 461 are integrated into a complete groove 460 after the sliding connection seat 300 is integrated with the supporting seat 200, the elastic element 410 is arranged in the groove 460 along the longitudinal direction, and a movable space is provided for stretching and retracting the elastic element 410; the elastic member 410 is a spring 411, one end of the spring 411 is fixedly connected with the bottom of the adjusting slider 430, the other end of the spring 411 is fixedly connected with the bottom of the sliding connecting seat 300, the adjusting member 420 is adjusted to enable the adjusting slider 430 to slide up and down, the length of the spring 411 is correspondingly changed, and the reset elastic force generated by the spring 411 on the sliding connecting seat 300 is changed. The adjusting slider 430 moves downwards to compress the spring 411, the length of the spring 411 becomes short, and the restoring elastic force of the spring 411 on the sliding connection seat 300 becomes small; the adjusting slider 430 moves upward to stretch the spring 411, the length of the spring 411 is long, and the restoring elastic force of the spring 411 to the sliding connection seat 300 is increased.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (10)

1. A lock adjustment device, characterized by: the locking adjusting device comprises a sliding connecting seat (300), a supporting seat (200) and a locking assembly (500) arranged between the sliding connecting seat and the supporting seat, the locking assembly (500) comprises a limiting block (510), a rotating rod (520) and an adjusting spanner (530), the limiting block (510) is sleeved on the rotating rod (520), one end of the rotating rod (520) is fixedly connected with the adjusting spanner (530), the locking assembly (500) is in a locking state and an unlocking state, and in the locking state, the limiting block (510) props against the sliding connecting seat (300) in the longitudinal direction so as not to slide up and down; when the locking state is switched to the unlocking state, the adjusting spanner (530) is pulled to enable the rotating rod (520) to rotate and drive the limiting block (510) to deflect so as to deviate from the sliding track of the sliding connecting seat (300), and at the moment, the sliding of the sliding connecting seat (300) is not blocked.

2. A lock adjustment device according to claim 1, characterized in that: the sliding connecting seat (300) is provided with a limiting groove (310) which is matched with the limiting block (510) in a clamping position along the longitudinal direction, and the limiting block (510) is abutted against the limiting groove (310) after synchronously rotating along with the rotating rod (520) so that the sliding connecting seat is in a locking state.

3. A lock adjustment device according to claim 2, characterized in that: the bottom of the sliding connecting seat (300) is outwards protruded to form a limiting groove (310), or the sliding connecting seat (300) is inwards recessed to form the limiting groove (310).

4. A lock adjustment device according to claim 2, characterized in that: one end of the limiting block (510) is prolonged to form an extension section (511), the diameter of the upper end of the extension section (511) is reduced to form an abutting part (512), and the abutting part (512) is abutted outwards against the top of the limiting groove (310) after rotating along with the rotating rod (520) so that the sliding connecting seat (300) cannot slide up and down.

5. A lock adjustment device according to claim 1, characterized in that: the locking assembly (500) further comprises a control member (540), wherein the control member (540) is configured to control the limiting block (510) to rotate to abut against the sliding connecting seat (300) and enable the limiting block (510) to be clamped and fixed.

6. A lock adjustment device according to claim 5, characterized in that: the control piece (540) is a rotation clamping block (541), the rotation clamping block (541) is sleeved on the rotating rod (520) and synchronously rotates with the limiting block (510), a first limiting portion (542) and a second limiting portion (543) are arranged on the rotation clamping block (541) and are provided with a first limiting protrusion (544) and a second limiting protrusion (545) along the circumferential direction, a clamping piece (550) is arranged in the supporting seat (200) at a position corresponding to the rotation clamping block (541), a first sliding stop portion (551) and a second sliding stop portion (552) which are in butt joint with the first limiting portion (542) and the second limiting portion (543) are arranged on the clamping piece (550), a limiting groove (553) which is matched with the limiting protrusion is further arranged on the clamping piece (550), the spanner (530) is moved so that the rotating rod (520) rotates, the rotation clamping block (541) synchronously rotates along with the rotating rod (520) and the first limiting protrusion (544) and the second limiting protrusion (545) are clamped and switched in the limiting groove (553).

7. A lock adjustment device according to claim 6, characterized in that: when the locking assembly (500) is in an unlocking state, the first limiting part (542) is in contact with the first anti-sliding part (551), the first limiting protrusion (544) is clamped into the limiting groove (553) to fix a clamping position, and the limiting block (510) is not abutted against the sliding connecting seat (300); when the locking assembly (500) is switched from the unlocking state to the locking state, the adjusting wrench (530) is pulled to enable the second limiting part (543) to be in contact with the second anti-slip part (552), the first limiting protrusion (544) is separated from the limiting groove, the second limiting protrusion (545) is clamped into the limiting groove (553) to fix the clamping position, and the limiting block (510) rotates to be in contact with the sliding connecting seat (300) and is fixed.

8. A lock adjustment device according to claim 7, characterized in that: the supporting seat (200) is inwards recessed to form a containing groove (210), and when the locking assembly (500) is in an unlocking state, the limiting block (510) is positioned in the containing groove (210) and does not rotate.

9. A lock adjustment device according to claim 1, characterized in that: the rotating rod (520) is a plug rod (521), one end, close to the rotating rod, of the adjusting spanner (530) is inwards recessed to form a plug groove (531) matched with the plug rod (521), and the plug rod (521) is inserted into the plug groove (531) to realize the fixed connection between the adjusting spanner (530) and the rotating rod (520).

10. A lock adjustment device according to claim 9, characterized in that: the cross section of the inserted rod (521) is polygonal, and the cross section of the inserting groove (531) is polygonal correspondingly matched with the inserted rod (521).