Quick release structure of seat

Abstract

The utility model relates to the technical field of seats, in particular to a seat quick-release structure which comprises a quick-release connecting frame and a seat. A locking piece and a containing space are arranged on the quick-release connecting frame in the longitudinal direction in the front-back direction, a limiting piece and a positioning piece are arranged at the bottom of the seat in the longitudinal direction in the front-back direction, the positioning piece can move in the longitudinal direction to stretch into the containing space, and after the positioning piece stretches into the containing space, the locking piece abuts against the limiting piece to prevent the positioning piece from being separated from the containing space. Through the arrangement of the quick-release connecting frame, the locking piece, the accommodating space, the limiting piece and the positioning piece, the seat can be mounted and dismounted only by moving the seat back and forth in the longitudinal direction, so that the mounting and dismounting actions of the seat are smoother, more convenient and more labor-saving, the seat does not need to be lifted by a relatively high distance when the seat is mounted and dismounted, and the mounting and dismounting efficiency of the seat is improved. And the chair is convenient for the disabled with leg defects and the old who cannot walk stably to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially is related to a chair quick release structure. BACKGROUND

[0002] Scooters are common walking tools, and are currently often used on people who have difficulty walking, and are a convenient walking tool. The disabled with leg defects and the elderly who walk unsteadily can improve their mobility and independence by using scooters, which brings convenience to themselves and others.

[0003] For example, Chinese patent No. 202010988345.8 discloses a scooter, which includes a chassis, a seat and a quick release structure. The quick release structure includes a guide column and a mounting rod. The guide column is arranged on the chassis, and the inside of the guide column forms a mounting cavity. The mounting rod is arranged at the bottom of the seat and is detachably inserted into the mounting cavity. The chassis and the seat are connected through the quick release structure, so that the quick release assembly and disassembly between the seat and the chassis can be realized.

[0004] This way needs to adjust the position of the seat repeatedly, so that the guide column and the mounting rod are aligned, resulting in low assembly efficiency. In addition, the seat needs to be lifted to a high distance to separate or connect with the mounting rod during installation and disassembly, resulting in that the installation and disassembly of the seat are relatively laborious, which is not conducive to the use of the disabled with leg defects and the elderly who walk unsteadily. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a technical scheme that can solve the above problems.

[0006] A seat quick release structure includes a quick release connecting frame and a seat. The quick release connecting frame is provided with a locking member and a containing space along the longitudinal direction from front to back. The bottom of the seat is provided with a limiting member and a positioning member along the longitudinal direction from front to back. The positioning member can move along the longitudinal direction to extend into the containing space. After the positioning member extends into the containing space, the locking member abuts against the limiting member to prevent the positioning member from separating from the containing space.

[0007] As a further scheme of the utility model: the positioning member includes a first L-shaped plate. The horizontal plate of the first L-shaped plate is connected with the seat. The vertical plate of the first L-shaped plate is provided with a positioning pin. The quick release connecting frame is enclosed by four edge frames. The edge of the edge frame extends inwardly and has a blocking edge. The blocking edge and the edge frame limit the containing space. When the first L-shaped plate moves to a certain position along the longitudinal direction, the positioning pin extends into the containing space.

[0008] As a further scheme of the utility model: the quick release connecting frame is provided with a side blocking plate symmetrically left and right. The horizontal plate of the first L-shaped plate is provided with a chamfer on the left and right sides.

[0009] As a further scheme of the utility model: the limiting piece includes a second L-shaped plate, the horizontal plate of the second L-shaped plate is connected with the seat, the locking piece includes a mounting plate, the mounting plate is horizontally arranged on the quick-release connecting frame, the bottom of the mounting plate is provided with a hinge seat, a lock catch is rotationally connected on the hinge seat through a rotating shaft, a torsional spring is sleeved on the rotating shaft, one end of the torsional spring is connected with the hinge seat, and the other end of the torsional spring is connected with the lock catch.

[0010] As a further scheme of the utility model: the bottom of the lock catch is provided with an unlocking rod, the front end of the quick-release connecting frame is provided with a through slot, and the tail end of the unlocking rod extends out of the through slot and is connected with an unlocking handle.

[0011] As a further scheme of the utility model: the hinge seat is in inverted N-shaped cross section, first shaft holes are formed in the two side walls of the hinge seat, the lock catch is in N-shaped cross section, second shaft holes are formed in the two side walls of the lock catch, the two side walls of the lock catch are respectively attached to the two side walls of the hinge seat, the first shaft holes and the second shaft holes are communicated, the rotating shaft is inserted into the first shaft holes and the second shaft holes, one end of the torsional spring is connected with the inner end face of the hinge seat, and the other end of the torsional spring is connected with the inner end face of the lock catch.

[0012] As a further scheme of the utility model: the two side walls of the lock catch are provided with locking grooves, a notch is formed in the middle of the vertical plate of the second L-shaped plate, and the groove walls of the locking grooves are abutted against the vertical plate of the second L-shaped plate under the action of the torsional spring after the positioning pin extends into the containing space.

[0013] As a further scheme of the utility model: one side of the lock catch close to the front end of the quick-release connecting frame is formed with a curved surface.

[0014] As a further scheme of the utility model: a plurality of limiting holes are formed in the vertical plate of the second L-shaped plate, a plurality of limiting pins are arranged on the bottom of the mounting plate, the number of the limiting pins is consistent with the number of the limiting holes, and each limiting pin is inserted into each limiting hole when the second L-shaped plate is moved to a certain position along the longitudinal direction of the quick-release connecting frame.

[0015] Compared with the prior art, the utility model has the beneficial effects that: through the arrangement of the quick-release connecting frame, the locking piece, the containing space, the limiting piece and the positioning piece, the installation and dismounting of the seat can be completed by moving the seat along the longitudinal direction, so that the installation and dismounting of the seat are more smooth, convenient and labor-saving, and the seat does not need to be lifted to a high distance during the installation and dismounting of the seat, which is convenient for the disabled with leg defects and the old people with unstable walking.

[0016] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a structural schematic diagram of the present application.

[0019] Figure 2 is a structural schematic diagram of the accommodation space part of the present application.

[0020] Figure 3 is a structural schematic diagram of the seat part of the present application.

[0021] Figure 4 is a structural schematic diagram of the first L-shaped plate part of the present application.

[0022] Figure 5 is a structural schematic diagram of the second L-shaped plate part of the present application.

[0023] Figure 6 is a structural schematic diagram of the lock part of the present application.

[0024] Figure 7 is a structural schematic diagram of the hinge seat part of the present application.

[0025] Figure 8 is a partial sectional view of the quick-release connecting frame of the present application.

[0026] Figure 9 is a partial enlarged view of A of Figure 8 .

[0027] Figure 10 is a use state diagram of the present application.

[0028] In the figure: 1, quick-release connecting frame, 2, seat, 3, vehicle body, 3, accommodation space, 4, first L-shaped plate, 5, positioning pin, 6, side frame, 7, baffle, 8, side baffle, 9, chamfer, 10, second L-shaped plate, 11, mounting plate, 12, hinge seat, 13, rotating shaft, 14, lock, 15, torsional spring, 16, through slot, 17, unlocking handle, 18, locking groove, 19, notch, 20, arc surface, 21, limiting hole, 22, limiting pin, 23, unlocking rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] Please refer to Figures 1-10 In the embodiments of the utility model, a seat quick release structure comprises a quick release connecting frame 1 and a seat 2; the quick release connecting frame 1 is provided with a locking piece and a containing space 3 in the longitudinal direction from front to back; the bottom of the seat 2 is provided with a limiting piece and a positioning piece in the longitudinal direction from front to back; the positioning piece can move in the longitudinal direction to extend into the containing space 3; after the positioning piece extends into the containing space 3, the locking piece abuts against the limiting piece to prevent the positioning piece from separating from the containing space 3.

[0031] In use, the quick release connecting frame 1 is fixedly installed on the vehicle body 3; when the seat 2 is installed, the seat 2 is placed on the quick release connecting frame 1 and then pushed backward to move, so that the positioning piece extends into the containing space 3 and the limiting piece is abutted against the limiting piece; the installation of the seat 2 is completed; when the seat 2 is disassembled, the locking piece is unlocked and the seat 2 is pushed forward, so that the positioning piece separates from the containing space 3; the disassembly of the seat 2 is completed; in this way, the installation and disassembly of the seat 2 can be completed by moving the seat 2 in the longitudinal direction from front to back, so that the installation and disassembly of the seat 2 are more smooth, convenient and labor-saving; when the seat 2 is installed and disassembled, the seat 2 does not need to be lifted to a high distance, which is convenient for the disabled with leg defects and the old people with unstable walking.

[0032] The positioning piece comprises a first L-shaped plate 4; the horizontal plate of the first L-shaped plate 4 is connected with the seat 2; the vertical plate of the first L-shaped plate 4 is provided with a positioning pin 5; the quick release connecting frame 1 is surrounded by four edge frames 6; the edge of the edge frame 6 extends inwardly and has a blocking edge 7; the containing space 3 is limited between the blocking edge 7 and the edge frame 6; when the first L-shaped plate 4 moves to a certain position in the longitudinal direction, the positioning pin 5 extends into the containing space 3. It can be understood that the containing space 3 is located close to the rear end of the quick release connecting frame 1; the first L-shaped plate 4 is located at the bottom rear end of the seat 2; when the seat 2 is pushed backward to move, the first L-shaped plate 4 moves to the position close to the rear end of the quick release connecting frame 1; the positioning pin 5 on the vertical plate of the first L-shaped plate 4 extends into the containing space 3, so as to limit the upward or downward movement of the seat 2.

[0033] The left and right side of the horizontal plate of the first L-shaped plate 4 is provided with a chamfer 9. When the seat 2 is pushed to move, the two side plates 8 can limit the horizontal plate of the first L-shaped plate 4 to prevent deviation during movement. After the seat 2 is installed, the two side plates 8 can also limit the seat 2 from moving left or right. The chamfer 9 can play a guiding role and facilitate the horizontal plate of the first L-shaped plate 4 to be pushed into the two side plates 8.

[0034] The limiting member includes a second L-shaped plate 10, and the horizontal plate of the second L-shaped plate 10 is connected with the seat 2. The locking member includes a mounting plate 11, which is transversely arranged on the quick-release connecting frame 1. The bottom of the mounting plate 11 is provided with a hinge seat 12. The hinge seat 12 is rotatably connected with a lock catch 14 through a rotating shaft 13. A torsional spring 15 is sleeved on the rotating shaft 13. One end of the torsional spring 15 is connected with the hinge seat 12, and the other end of the torsional spring 15 is connected with the lock catch 14. After the positioning pin 5 extends into the containing space 3, the lock catch 14 abuts against the vertical plate of the second L-shaped plate 10 under the action of the torsional spring 15. It can be understood that the mounting plate 11 is located close to the front end of the quick-release connecting frame 1. After the positioning pin 5 extends into the containing space 3, the lock catch 14 abuts against the vertical plate of the second L-shaped plate 10 to limit the movement of the seat 2 in the front-rear direction, thereby avoiding the positioning pin 5 from falling off the containing space 3.

[0035] The bottom of the lock catch 14 is provided with an unlocking rod 23. The front end of the quick-release connecting frame 1 is provided with a through slot 16. The distal end of the unlocking rod 23 extends out of the through slot 16 and is connected with an unlocking handle 17. When disassembling, the unlocking handle 17 is pressed to drive the lock catch 14 to rotate downward through the unlocking rod 23, so that the lock catch 14 is separated from the second L-shaped plate 10. The seat 2 can be moved forward to separate the seat 2 from the quick-release connecting frame 1.

[0036] The cross-sectional shape of the hinge seat 12 is inverted U-shaped. First shaft holes are formed in the two side walls of the hinge seat 12. The cross-sectional shape of the lock catch 14 is U-shaped. Second shaft holes are formed in the two side walls of the lock catch 14. The two side walls of the lock catch 14 are respectively fitted with the two side walls of the hinge seat 12. The first shaft holes and the second shaft holes are communicated. The rotating shaft 13 is inserted into the first shaft holes and the second shaft holes. One end of the torsional spring 15 is connected with the inner end face of the hinge seat 12, and the other end of the torsional spring 15 is connected with the inner end face of the lock catch 14. It should be noted that the hinge seat 12 and the lock catch 14 can be formed by stamping and bending of sheet metal. The processing is easy, the processing cost can be saved, and the hinge seat 12 and the lock catch 14 are designed in the U-shaped structure to provide installation space for the torsional spring 15. The design is reasonable and facilitates assembly.

[0037] In order to better match the lock catch 14 and the vertical plate of the second L-shaped plate 10, the two side walls of the lock catch 14 are provided with locking grooves 18, and the middle part of the vertical plate of the second L-shaped plate 10 is provided with a notch 19. After the positioning pin 5 extends into the accommodating space 3, under the action of the torsion spring 15, the groove wall of the locking groove 18 abuts against the vertical plate of the second L-shaped plate 10.

[0038] An arc surface 20 is formed on one side of the lock catch 14 close to the front end of the quick-release connecting frame 1. During the installation of the seat 2, when the seat 2 is pushed backward to move, the vertical plate of the second L-shaped plate 10 abuts against the arc surface 20, and a downward pressing force is generated on the lock catch 14, so that the lock catch 14 is downwardly rotated to avoid the seat 2, thereby facilitating the installation of the seat 2.

[0039] A plurality of limiting holes 21 are formed on the vertical plate of the second L-shaped plate 10, and a plurality of limiting pins 22 are arranged on the bottom of the mounting plate 11. The number of the limiting pins 22 is consistent with the number of the limiting holes 21. When the second L-shaped plate 10 moves to a certain position along the longitudinal direction of the quick-release connecting frame 1, each limiting pin 22 is inserted into each limiting hole 21. Through the cooperation of the limiting hole 21 and the limiting pin 22, the freedom degree of the seat 2 in the left-right direction and the up-down direction is limited, so that the seat 2 is more stable during installation.

[0040] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A seat quick release structure, characterized by, The quick-release connecting frame and the seat are included. The quick-release connecting frame is provided with a locking member and a receiving space in the longitudinal direction, and the bottom of the seat is provided with a limiting member and a positioning member in the longitudinal direction, the positioning member is movable in the longitudinal direction to extend into the receiving space, and after the positioning member extends into the receiving space, the locking member abuts against the limiting member to prevent the positioning member from being separated from the receiving space.

2. The quick release structure of claim 1, wherein: The positioning member includes a first L-shaped plate, the horizontal plate of the first L-shaped plate is connected with the seat, the vertical plate of the first L-shaped plate is provided with a positioning pin, the quick-release connecting frame is enclosed by four edge frames, the edge of the edge frame extends inwardly to form a retaining edge, the retaining edge and the edge frame limit the receiving space, and when the first L-shaped plate moves to a certain position in the longitudinal direction, the positioning pin extends into the receiving space.

3. The quick release structure of claim 2, wherein: The quick-release connecting frame is provided with side retaining plates which are symmetrically arranged left and right, and the horizontal plate of the first L-shaped plate is provided with chamfers left and right.

4. The quick release structure of claim 2, wherein: The limiting member includes a second L-shaped plate, the horizontal plate of the second L-shaped plate is connected with the seat, the locking member includes a mounting plate, the mounting plate is arranged transversely on the quick-release connecting frame, the bottom of the mounting plate is provided with a hinge seat, the hinge seat is rotatably connected with a lock catch through a rotating shaft, a torsional spring is sleeved on the rotating shaft, one end of the torsional spring is connected with the hinge seat, and the other end of the torsional spring is connected with the lock catch, after the positioning pin extends into the receiving space, the lock catch abuts against the vertical plate of the second L-shaped plate under the action of the torsional spring.

5. The quick release structure of claim 4, wherein: The bottom of the lock catch is provided with an unlocking rod, the front end of the quick-release connecting frame is provided with a through slot, the tail end of the unlocking rod extends out of the through slot and is connected with an unlocking handle.

6. The quick release seat structure according to claim 4, wherein: The hinge seat has an inverted U-shaped cross section, first shaft holes are formed in the two side walls of the hinge seat, the lock catch has a U-shaped cross section, second shaft holes are formed in the two side walls of the lock catch, the two side walls of the lock catch are respectively attached to the two side walls of the hinge seat, the first shaft holes and the second shaft holes are communicated, the rotating shaft is inserted into the first shaft holes and the second shaft holes, one end of the torsional spring is connected with the inner end face of the hinge seat, and the other end of the torsional spring is connected with the inner end face of the lock catch.

7. The quick release seat structure according to claim 6, wherein: Locking grooves are formed in the two side walls of the lock catch, and a gap is formed in the middle of the vertical plate of the second L-shaped plate, after the positioning pin extends into the receiving space, the groove walls of the locking grooves abut against the vertical plate of the second L-shaped plate under the action of the torsional spring.

8. The quick release seat structure according to claim 6, wherein: An arc surface is formed on one side of the lock catch close to the front end of the quick-release connecting frame.

9. The quick release seat structure according to claim 4, wherein: A plurality of limiting holes are formed in the vertical plate of the second L-shaped plate, a plurality of limiting pins are arranged on the bottom of the mounting plate, the number of the limiting pins is consistent with the number of the limiting holes, and when the second L-shaped plate moves to a certain position in the longitudinal direction of the quick-release connecting frame, the limiting pins are respectively inserted into the limiting holes.

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