CN216494519U

CN216494519U - Single-rod back-tracking chair capable of being manually adjusted

Info

Publication number: CN216494519U
Application number: CN202123057727.8U
Authority: CN
Inventors: 储明玉
Original assignee: Hangzhou Yizuo Industrial Design Co ltd
Current assignee: Hangzhou Yizuo Industrial Design Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-13
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a manually adjustable single-rod back-tracking chair which comprises a seat support, wherein a first connecting rod and a second connecting rod are respectively arranged on the outer side of the seat support, a first connecting piece, a third connecting rod, a second connecting piece and a fixing piece are respectively arranged on one side of the first connecting rod, a thread groove is formed in the bottom end of the first connecting rod, a screw is arranged on the inner side of the thread groove, a spring adjusting piece and a torsion spring are respectively arranged inside the first connecting piece, an installing piece and a limiting groove are respectively arranged inside the third connecting rod, a locking bolt and a return spring are respectively arranged inside the installing piece, and a cam is arranged inside the locking bolt; this single pole that can carry out manual regulation chases after back chair can reach can the person of facilitating the use to the support range of the back of the chair change through being provided with first connecting rod, first connecting piece, thread groove, screw, spring adjustment spare and torsional spring, has the purpose of very strong suitability.

Description

Single-rod back-tracking chair capable of being manually adjusted

Technical Field

The utility model relates to the technical field of seats, in particular to a manually adjustable single-rod back-chasing chair.

Background

In the modern society, child education is a social hotspot, and a good learning condition is that each pair of parents first hope to provide children for themselves, so that it is necessary to design a child chair suitable for children to sit on, but nowadays, the child chair on the market is designed from correcting sitting postures of children or adjusting the height of the chair, and in the learning process, proper rest is necessary, and the human body does not lean forward when the child chair is rested, the chair back of the traditional chair cannot provide support for the human body continuously after the human body leans forward, and if a child chair which can provide support for the human body both in the learning process and the resting process can be designed, a better learning condition can be provided for the children.

The prior art has the following defects or problems:

1. the existing chair back cannot adjust the force of the torsion spring, so that a user cannot adjust the support amplitude of the chair back according to the taste of the user;

2. the existing chair back can not be limited, and when a user does not need to use the forward tilting function of the chair back, the existing product can not be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a single-rod back-chasing chair capable of being manually adjusted aiming at the defects in the prior art so as to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a single pole chair of pursuing back that can carry out manual regulation, includes the seat support, the outside of seat support is provided with first connecting rod and second connecting rod respectively, one side of first connecting rod is provided with first connecting piece, third connecting rod, second connecting piece and mounting respectively, the thread groove has been seted up to the bottom of first connecting rod, the inboard of thread groove is provided with the screw, the inside of first connecting piece is provided with spring adjustment spare and torsional spring respectively, the inside of third connecting rod is provided with installed part and spacing groove, the inside of installed part is provided with dead bolt and reset spring respectively, the inside of dead bolt is provided with the cam, one side of third connecting rod is provided with locking switch, connecting axle and set casing respectively.

As a preferred technical solution of the present invention, an inner side of the first connecting member is rotatably connected to one end of the first connecting rod, one side of the first connecting member is fixedly connected to one end of the third connecting rod, and one end of the third connecting rod is fixedly connected to one end of the second connecting member.

In a preferred embodiment of the present invention, the specification of the screw and the specification of the thread groove are matched with each other, and the outer side of the screw is screwed to the inner side of the thread groove.

As a preferred technical scheme, the spring adjusting piece is positioned below the torsion spring, one end of the torsion spring is fixedly connected with one side of the spring adjusting piece, and one end of the screw is tightly attached to one side of the spring adjusting piece.

As a preferable technical scheme of the utility model, one end of the return spring is fixedly connected with the top end of the locking bolt, one end of the return spring is fixedly connected with one side of the inside of the mounting piece, and the bottom end of the locking bolt is positioned above the limiting groove.

As a preferable technical solution of the present invention, one side of the fixing case is fixedly connected to one side of the third link, one side of the locking switch is fixedly connected to one end of the connecting shaft, and one end of the connecting shaft penetrates through one side of the fixing case and is fixedly connected to the inner side of the cam.

As a preferred technical scheme of the present invention, one end of the fixing member is fixedly connected with a chair back, the second connecting rod is located below the first connecting rod, one side of the second connecting rod is fixedly connected with a fixing seat, and one end of the fixing seat is fixedly connected with a chair seat.

Compared with the prior art, the utility model provides a single-rod back-chasing chair capable of being manually adjusted, which has the following beneficial effects:

1. the single-rod back-chasing chair capable of being manually adjusted is provided with the first connecting rod, the first connecting piece, the thread groove, the screw, the spring adjusting piece and the torsion spring, when the support amplitude of the chair back needs to be adjusted, the screw can be controlled to rotate, so that the screw is screwed up in the thread groove, one end of the spring adjusting piece can be upwards jacked by the screw when the screw is screwed up, so that the spring adjusting piece rotates in a small amplitude, the initial angle size of the torsion spring can be changed in the rotation process of the spring adjusting piece, the force effect of the torsion spring can be adjusted, the support amplitude of the chair back can be changed by adjusting the force of the torsion spring, and the device can be convenient for a user to change the support amplitude of the chair back and has strong applicability;

2. the single-rod back-chasing chair capable of being manually adjusted is characterized in that a third connecting rod, an installation part, a limiting groove, a locking bolt, a reset spring, a cam, a locking switch, a connecting shaft and a fixed shell are arranged, when the chair back needs to be limited, the locking switch drives the cam to rotate clockwise through the connecting shaft by twisting the locking switch clockwise, the cam can drive the locking bolt to move downwards, the bottom end of the locking bolt is conveniently clamped into the limiting groove, the reset spring is in a stretching state, so that the first connecting part cannot rotate with the first connecting rod, the chair back cannot move at the moment, when the chair back does not need to be limited, the locking switch can be twisted anticlockwise, the locking switch drives the connecting shaft cam to rotate anticlockwise, the cam can drive the locking bolt to move upwards, and at the moment, the bottom end of the locking bolt is separated from the limiting groove, the reset spring is in a contraction state, the chair back can move at the moment, and the device can limit the chair back manually and is convenient to use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is an exploded view of a portion of the structure of the present invention;

FIG. 4 is a side exploded view of a portion of the structure of the present invention;

fig. 5 is a cross-sectional view of a partial structure of the present invention.

In the figure: 1. a seat support; 2. a first link; 3. a second link; 4. a fixed seat; 5. a first connecting member; 6. a third link; 7. a second connecting member; 8. a fixing member; 9. a chair back; 10. a thread groove; 11. a screw; 12. a spring adjustment member; 13. a torsion spring; 14. a mounting member; 15. a limiting groove; 16. locking the bolt; 17. a return spring; 18. a cam; 19. a locking switch; 20. a connecting shaft; 21. a stationary case; 22. a chair seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, in this embodiment: the utility model provides a single pole chair of chasing after that can carry out manual regulation, including seat support 1, the outside of seat support 1 is provided with first connecting rod 2 and second connecting rod 3 respectively, one side of first connecting rod 2 is provided with first connecting piece 5 respectively, third connecting rod 6, second connecting piece 7 and mounting 8, thread groove 10 has been seted up to the bottom of first connecting rod 2, the inboard of thread groove 10 is provided with screw 11, the inside of first connecting piece 5 is provided with spring adjustment spare 12 and torsional spring 13 respectively, the inside of third connecting rod 6 is provided with installed part 14 and spacing groove 15, the inside of installed part 14 is provided with locking bolt 16 and reset spring 17 respectively, the inside of locking bolt 16 is provided with cam 18, one side of third connecting rod 6 is provided with locking switch 19 respectively, connecting axle 20 and set casing 21.

In this embodiment, the inner side of the first connecting member 5 is rotatably connected to one end of the first connecting rod 2, one side of the first connecting member 5 is fixedly connected to one end of the third connecting rod 6, and one end of the third connecting rod 6 is fixedly connected to one end of the second connecting member 7, so that the third connecting rod 6 can rotate on the first connecting rod 2 through the first connecting member 5. The specification of the screw 11 and the specification of the thread groove 10 are matched with each other, and the outer side of the screw 11 is screwed with the inner side of the thread groove 10, so that the screw 11 can be screwed up and down in the thread groove 10. Spring adjusting part 12 is located the below of torsional spring 13, one end of torsional spring 13 and one side fixed connection of spring adjusting part 12, and the one end of screw 11 closely laminates with one side of spring adjusting part 12 for when screw 11 carries out the top with spring adjusting part 12 and moves, spring adjusting part 12 can change the initial angle size of torsional spring 13. One end of a return spring 17 is fixedly connected with the top end of the locking bolt 16, one end of the return spring 17 is fixedly connected with one side of the inside of the mounting part 14, the bottom end of the locking bolt 16 is located above the limiting groove 15, and the locking bolt 16 achieves the limiting function of the chair back 9 through the limiting groove 15. One side of the fixed shell 21 is fixedly connected with one side of the third connecting rod 6, one side of the locking switch 19 is fixedly connected with one end of the connecting shaft 20, and one end of the connecting shaft 20 penetrates through one side of the fixed shell 21 and is fixedly connected with the inner side of the cam 18, so that the cam 18 can be controlled through the locking switch 19 and the connecting shaft 20. The one end fixedly connected with back of the chair 9 of mounting 8, second connecting rod 3 are located the below of first connecting rod 2, one side fixedly connected with fixing base 4 of second connecting rod 3, and the one end fixedly connected with seat support 22 of fixing base 4, the person of facilitating the use uses.

The working principle and the using process of the utility model are as follows: when the support amplitude of the chair back 9 needs to be adjusted, the screw 11 can be controlled to rotate, so that the screw 11 is screwed up in the thread groove 10, one end of the spring adjusting piece 12 is pushed upwards by the screw 11 when the screw is screwed up, the spring adjusting piece 12 is enabled to rotate in a small amplitude, the initial angle of the torsion spring 13 can be changed in the rotation process of the spring adjusting piece 12, the action of the force of the torsion spring 13 can be adjusted, and the support amplitude of the chair back 9 can be changed by adjusting the size of the force of the torsion spring 13; when needs carry on spacingly to the back of the chair 9, through clockwise wrench movement locking switch 19, make locking switch 19 drive cam 18 through connecting axle 20 and carry out clockwise rotation, cam 18 just can drive dead bolt 16 and carry out the downstream, dead bolt 16's bottom is convenient for block into spacing groove 15 in, reset spring 17 is in tensile state, make first connecting piece 5 unable and first connecting rod 2 rotate, the back of the chair 9 just can't move this moment, when need not to carry out spacingly to the back of the chair 9, then can anticlockwise wrench movement locking switch 19, make locking switch 19 drive cam 18 through connecting axle 20 and carry out anticlockwise rotation, cam 18 just can drive dead bolt 16 and carry out the rebound, at this moment, dead bolt 16's bottom and spacing groove 15 break away from, reset spring 17 is in the contraction state, at this moment the back of the chair 9 alright with moving.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a can carry out single pole chair of pursuing back that manual regulation which characterized in that: including seat support (1), the outside of seat support (1) is provided with first connecting rod (2) and second connecting rod (3) respectively, one side of first connecting rod (2) is provided with first connecting piece (5), third connecting rod (6), second connecting piece (7) and mounting (8) respectively, thread groove (10) have been seted up to the bottom of first connecting rod (2), the inboard of thread groove (10) is provided with screw (11), the inside of first connecting piece (5) is provided with spring adjusting part (12) and torsional spring (13) respectively, the inside of third connecting rod (6) is provided with installed part (14) and spacing groove (15), the inside of installed part (14) is provided with dead bolt (16) and reset spring (17) respectively, the inside of dead bolt (16) is provided with cam (18), one side of third connecting rod (6) is provided with dead bolt (19) respectively, A connecting shaft (20) and a stationary case (21).

2. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: the inner side of the first connecting piece (5) is rotatably connected with one end of the first connecting rod (2), one side of the first connecting piece (5) is fixedly connected with one end of the third connecting rod (6), and one end of the third connecting rod (6) is fixedly connected with one end of the second connecting piece (7).

3. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: the specification of the screw (11) is matched with that of the thread groove (10), and the outer side of the screw (11) is in threaded connection with the inner side of the thread groove (10).

4. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: spring adjusting part (12) are located the below of torsional spring (13), one end of torsional spring (13) and one side fixed connection of spring adjusting part (12), the one end of screw (11) closely laminates with one side of spring adjusting part (12).

5. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: one end of the reset spring (17) is fixedly connected with the top end of the locking bolt (16), one end of the reset spring (17) is fixedly connected with one side of the inner part of the mounting part (14), and the bottom end of the locking bolt (16) is positioned above the limiting groove (15).

6. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: one side of the fixed shell (21) is fixedly connected with one side of the third connecting rod (6), one side of the locking switch (19) is fixedly connected with one end of the connecting shaft (20), and one end of the connecting shaft (20) penetrates through one side of the fixed shell (21) and is fixedly connected with the inner side of the cam (18).

7. A manually adjustable single bar back-pursuing chair according to claim 1, characterised in that: the one end fixedly connected with back of the chair (9) of mounting (8), second connecting rod (3) are located the below of first connecting rod (2), one side fixedly connected with fixing base (4) of second connecting rod (3), the one end fixedly connected with seat support (22) of fixing base (4).