CN221012568U

CN221012568U - Chair convenient to adjust headrest height

Info

Publication number: CN221012568U
Application number: CN202321818737.5U
Authority: CN
Inventors: 谭庆
Original assignee: Hunan Institute of Engineering
Current assignee: Hunan Institute of Engineering
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-05-28
Anticipated expiration: 2033-07-11

Abstract

The utility model discloses a chair convenient for adjusting the height of a headrest, which relates to the technical field of chairs and comprises support legs, a lifting mechanism and an adjusting mechanism, wherein the lower ends of the support legs are fixedly connected with a cushion block, the support legs are provided with the lifting mechanism, the lifting mechanism is provided with a cushion, the upper ends of the cushion are fixedly connected with armrests, the chair convenient for adjusting the height of the headrest is provided by the utility model, a square rod is conveniently slid in the support legs, a clamping groove is formed in the square rod, a clamping pin is slid in the clamping groove, a handle is fixed on the clamping pin, a spring is fixed on the handle, when the height of the cushion needs to be adjusted, the handle is pulled to enable the handle to drive the clamping pin to slide out of the clamping groove formed in the square rod, at the moment, the square rod is driven to move by the handle, and the clamping pin is driven by the handle to slide into the clamping groove again under the elastic action of a spring when the cushion is adjusted to a proper position, and at the moment, the height adjustment of the cushion is completed.

Description

Chair convenient to adjust headrest height

Technical Field

The utility model relates to the technical field of chairs, in particular to a chair convenient for adjusting the height of a headrest.

Background

In daily life, a chair is often used, and the utility model patent with the patent grant bulletin number of CN201767476U provides a chair with a headrest, which comprises a chair seat, chair feet and a backrest, and is characterized in that the backrest is also provided with the headrest with an up-down lifting adjusting function. The utility model adopts the headrest structure with the function of up-down lifting and adjusting on the backrest of the chair, so that people can sit on the chair, the waist and the back can lean against the backrest, and the head can lean against the headrest, thus the whole body of people can be effectively relaxed. Meanwhile, the design of the whole chair is more humanized, the riding comfort of people is effectively improved, and the chair has the characteristics of good comfort and simple structure. The headrest structure of the utility model can be widely applied to chairs of various specifications. However, the above patent also has the following disadvantages: the cushion on the chair is often fixed on the stabilizer blade, and is inconvenient to the altitude mixture control of cushion this moment to often be provided with the headrest on some chairs, because user's height is different, the demand to the headrest position also is different, and is also inconvenient to the regulation of headrest this moment.

Disclosure of utility model

The utility model provides a chair convenient for adjusting the height of a headrest, which solves the technical problem that a cushion on the chair is always fixed on supporting legs, and the height adjustment of the cushion is inconvenient at the moment, and also solves the problem that the headrest is not convenient at the moment because the headrest is always arranged on some chairs, and the requirements on the position of the headrest are different due to different heights of users.

In order to solve the technical problems, the chair convenient for adjusting the height of the headrest comprises support legs, a lifting mechanism and an adjusting mechanism, wherein the lower ends of the support legs are fixedly connected with cushion blocks, the support legs are provided with the lifting mechanism, the lifting mechanism is provided with a cushion, the upper end of the cushion is fixedly connected with armrests, the upper end of the cushion is fixedly connected with a backrest, and the backrest is provided with the adjusting mechanism;

The lifting mechanism comprises a square rod, a clamping groove, a clamping pin, a supporting block, a handle and a spring, wherein the square rod is connected in a sliding manner in the supporting legs, the upper end of the square rod is fixedly connected with a seat cushion, the clamping groove is formed in the square rod, the clamping pin is connected in a sliding manner in the clamping groove, the supporting block is connected in a sliding manner on the outer side of the clamping pin, the handle is fixedly connected to the clamping pin, the spring is arranged on the outer side of the clamping pin, and the height of the seat cushion can be adjusted by designing the lifting mechanism;

The adjusting mechanism comprises a motor, a screw rod, a thread block, a supporting plate, a headrest and a limiting groove, wherein the motor is fixedly installed on the backrest, the output end of the motor is rotationally connected to the backrest, the screw rod is fixedly connected to the output end of the motor, the thread block is connected to the outer side of the screw rod through threads, the supporting plate is fixedly connected to the thread block, the headrest is fixedly connected to the supporting plate, the limiting groove is formed in the backrest, the thread block is connected to the inside of the limiting groove in a sliding mode, and the position of the headrest is adjusted conveniently through the design of the adjusting mechanism.

Preferably, one end of the spring is fixedly connected to the supporting block, the other end of the spring is fixedly connected to the handle, and the handle can be moved under the elastic action of the spring through designing the spring.

Preferably, the support block is fixedly connected in the support leg, the support leg is contacted with the handle, and the support block can be driven to move through the handle by designing the handle.

Preferably, the number of the square rods is four, the four square rods are uniformly distributed at the lower end of the seat cushion, and the square rods are designed to enable the placement of the chair body to be more stable.

Compared with the related art, the chair convenient for adjusting the height of the headrest has the following beneficial effects:

The utility model provides a chair convenient for adjusting the height of a headrest, which is characterized in that a square rod is slid in a supporting leg, a clamping groove is formed in the square rod, a clamping pin is slid in the clamping groove, a handle is fixed on the clamping pin, a spring is fixed on the handle, when the height of a seat cushion is required to be adjusted, the handle is pulled to drive the clamping pin to slide out of the clamping groove formed in the square rod, at the moment, the square rod is driven to move by moving the seat cushion, when the seat cushion is adjusted to a proper position, the handle is released, and the clamping pin is driven by the handle to slide into the clamping groove again under the elastic action of the spring, so that the height adjustment of the seat cushion is completed.

The utility model provides a chair convenient for adjusting the height of a headrest, which is characterized in that a motor is arranged on a backrest, a screw rod is fixed at the output end of the motor, the outer side of the screw rod is in threaded connection with a threaded block, a supporting plate is fixed on the threaded block, the headrest is fixed on the supporting plate, the screw rod is driven by the motor to rotate, and then the threaded block drives the supporting plate to move, so that the headrest is moved, and the position of the headrest can be adjusted according to the requirement of a user.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of FIG. 1 of the present utility model;

FIG. 3 is a side cross-sectional view of FIG. 1 of the present utility model;

fig. 4 is an enlarged view of the utility model at a in fig. 2.

Reference numerals in the drawings: 1. a support leg; 2. a cushion block; 3. a lifting mechanism; 4. a cushion; 5. an armrest; 6. a backrest; 7. an adjusting mechanism; 31. square rods; 32. a clamping groove; 33. a bayonet lock; 34. a support block; 35. a handle; 36. a spring; 71. a motor; 72. a screw rod; 73. a screw block; 74. a support plate; 75. a headrest; 76. and a limit groove.

Detailed Description

Referring to fig. 1, 2, 3 and 4, a chair convenient for adjusting the height of a headrest comprises a support leg 1, a lifting mechanism 3 and an adjusting mechanism 7, wherein the lower end of the support leg 1 is fixedly connected with a cushion block 2, the lifting mechanism 3 is arranged on the support leg 1, a seat cushion 4 is arranged on the lifting mechanism 3, the upper end of the seat cushion 4 is fixedly connected with a handrail 5, the upper end of the seat cushion 4 is fixedly connected with a backrest 6, the adjusting mechanism 7 is arranged on the backrest 6, the support leg 1 is internally and fixedly connected with a supporting block 34, and the support leg 1 is contacted with a handle 35

Referring to fig. 1, 2, 3 and 4, the lifting mechanism 3 comprises a square rod 31, a clamping groove 32, a clamping pin 33, a supporting block 34, a handle 35 and springs 36, wherein the square rod 31 is connected with the square rod 1 in a sliding manner, the seat cushion 4 is fixedly connected to the upper end of the square rod 31, the clamping groove 32 is formed in the square rod 31, the clamping pin 33 is connected with the clamping pin 32 in a sliding manner, the supporting block 34 is connected to the outer side of the clamping pin 33 in a sliding manner, the handle 35 is fixedly connected to the clamping pin 33, the springs 36 are arranged on the outer side of the clamping pin 33, one end of each spring 36 is fixedly connected to the supporting block 34, the other end of each spring 36 is fixedly connected to the handle 35, the square rods 31 are distributed at the lower end of the seat cushion 4 uniformly, and the height of the seat cushion 4 can be adjusted by designing the lifting mechanism 3.

Referring to fig. 1, 2 and 3, the adjusting mechanism 7 includes a motor 71, a screw rod 72, a threaded block 73, a supporting plate 74, a headrest 75 and a limiting groove 76, wherein the motor 71 is fixedly installed on the backrest 6, an output end of the motor 71 is rotationally connected to the backrest 6, the screw rod 72 is fixedly connected to an output end of the motor 71, the threaded block 73 is connected to the outer side of the screw rod 72 through threads, the supporting plate 74 is fixedly connected to the threaded block 73, the headrest 75 is fixedly connected to the supporting plate 74, the limiting groove 76 is formed in the backrest 6, the threaded block 73 is slidably connected to the limiting groove 76, and the position of the headrest 75 is conveniently adjusted through designing the adjusting mechanism 7.

Working principle: when the seat cushion is used, the handle 35 can be pulled to drive the clamping pin 33 fixed on the handle 35 to move and slide out of the clamping groove 32 loosened in the square rod 31, the spring 36 is stretched by the movement of the handle 35, the limit on the square rod 31 is released, the square rod 31 is driven to move by the movement of the seat cushion 4, when the seat cushion 4 moves to a proper position, the handle 35 is released under the elastic action of the spring 36, the handle 35 is moved, the clamping pin 33 is moved and slides into the clamping groove 32 again, at the moment, the adjustment of the seat cushion 4 is completed, when a user sits on the seat cushion 4 and needs to adjust the position of the headrest 75, the motor 71 is started, the screw rod 72 is driven to rotate by the motor 71, the screw rod 72 and the screw block 73 are driven to move, the support plate 74 fixed on the screw block 73 is driven to move, and the headrest 75 is driven to move by the movement of the support plate 74, so that the position of the headrest 75 is adjusted.

Claims

1. The utility model provides a chair convenient to adjust headrest height, includes stabilizer blade (1), elevating system (3), adjustment mechanism (7), its characterized in that, the lower extreme fixedly connected with cushion (2) of stabilizer blade (1), be provided with elevating system (3) on stabilizer blade (1), be provided with cushion (4) on elevating system (3), the upper end fixedly connected with handrail (5) of cushion (4), the upper end fixedly connected with back (6) of cushion (4), be provided with adjustment mechanism (7) on back (6);

The lifting mechanism (3) comprises a square rod (31), a clamping groove (32), a clamping pin (33), a supporting block (34), a handle (35) and a spring (36), wherein the square rod (31) is connected in a sliding manner in the supporting leg (1), the upper end of the square rod (31) is fixedly connected with a seat cushion (4), the clamping groove (32) is formed in the square rod (31), the clamping pin (33) is connected in the clamping groove (32) in a sliding manner, the supporting block (34) is connected in a sliding manner on the outer side of the clamping pin (33), the handle (35) is fixedly connected on the clamping pin (33), and the spring (36) is arranged on the outer side of the clamping pin (33);

Adjustment mechanism (7) are including motor (71), lead screw (72), screw thread piece (73), backup pad (74), headrest (75), spacing groove (76), fixed mounting has motor (71) on back (6), the output of motor (71) rotates to be connected on back (6), fixedly connected with lead screw (72) on the output of motor (71), the outside of lead screw (72) is through threaded connection with screw thread piece (73), fixedly connected with backup pad (74) on screw thread piece (73), fixedly connected with headrest (75) on backup pad (74), spacing groove (76) have been seted up in back (6), sliding connection has screw thread piece (73) in spacing groove (76).

2. A chair for facilitating the adjustment of the height of a headrest according to claim 1, characterized in that one end of the spring (36) is fixedly connected to the support block (34), and the other end of the spring (36) is fixedly connected to the handle (35).

3. A chair for facilitating the adjustment of the height of a headrest according to claim 1, characterized in that the support block (34) is fixedly connected in the foot (1), the foot (1) being in contact with the handle (35).

4. A chair for facilitating the adjustment of the height of a headrest according to claim 1, characterized in that the number of the square rods (31) is four, and the four square rods (31) are uniformly distributed at the lower end of the seat cushion (4).