CN220756963U - Chair and chair back - Google Patents

Abstract

The utility model discloses a chair and a chair backrest, and relates to the technical field of chairs. According to the utility model, the motor II is started, the driving block is driven by the threaded rod II to close towards the middle of the threaded rod II under the action of rotation of the rotating shaft of the motor II, so that the supporting rod pushes the supporting frame to move, and meanwhile, under the pushing action of the supporting frame, the top plate pushes the telescopic cushion to stretch, so that the protruding degree of the lumbar pillow can be accurately adjusted according to the habit of a user, and meanwhile, the elasticity of the lumbar pillow is better through the arrangement of the springs, so that the chair is more comfortable when in use, the problem that the lumbar pillow is arranged at the backrest of the chair for making the chair more comfortable in use is solved, but the protruding degree of the lumbar pillow of the existing chair is inconvenient to adjust according to the habit of the user, and a certain use inconvenience exists.

Description

Chair and chair back

Technical Field

The utility model relates to the technical field of chairs, in particular to a chair and a chair backrest.

Background technique

A chair is a piece of furniture for daily life, a kind of seat with a backrest and armrests. Modern chairs pursue beauty and fashion. Some chairs are no longer just seats. With the combination of technology, they make human life more convenient.

For example, the Chinese patent publication number CN218635648U discloses a chair back and a chair, the chair back comprises: a chair back bracket, the front side of the chair back bracket is provided with a first positioning groove; and a lumbar support mechanism, the lumbar support mechanism comprises an elastic component and a lumbar support member, the elastic component comprises a first mounting member, a second mounting member spaced apart from the first mounting member, and an elastic support member connected between the first mounting member and the second mounting member, the first mounting member is arranged in the first positioning groove, the lumbar support member is arranged on the front side of the chair back bracket, and the side of the lumbar support member close to the chair back bracket is provided with a second positioning groove, and the second mounting member is arranged in the second positioning groove. The chair back and chair proposed by the utility model can improve the comfort of users when sitting up.

The existing technology has the following problems:

In order to better adapt to people of different heights, the existing chairs are often provided with a height adjustment function. However, during the adjustment process, the operation is cumbersome and inconvenient to use. In order to make the chair more comfortable during use, the existing chairs are often provided with a lumbar pillow at the backrest. However, the protrusion of the lumbar pillow of the existing chair is not convenient to adjust according to the habits of the user, which causes certain inconveniences in use.

Utility Model Content

The utility model provides a chair and a chair backrest to solve the problems raised in the above background technology.

In order to solve the above technical problems, the technical solution adopted by the utility model is:

A chair and a chair backrest, comprising a support mechanism, the top of the support mechanism is fixedly connected to a seat mechanism, and the inside of the seat mechanism is fixedly connected to a backrest mechanism; the support mechanism comprises a moving wheel and a support rod, the top of the moving wheel is fixedly connected to one end of the support rod, the other end of the support rod is fixedly connected to a support block, and the top of the support block is fixedly connected to a support column;

The bottom of the inner cavity of the support column is fixedly connected with a motor 1, the top of the motor 1 shaft is fixedly connected with a threaded rod 1, the surface of the threaded rod 1 is threadedly connected with a threaded sleeve, and the top of the support column is overlapped with a fixed column.

A further improvement of the technical solution of the utility model is that the seat mechanism comprises a support plate and a telescopic cushion, the surface of the support plate is fixedly connected to the bottom of the telescopic cushion, and the top of the support plate is fixedly connected to an electric telescopic rod.

A further improvement of the technical solution of the utility model is that: the top of the electric telescopic rod is fixedly connected with an armrest, and the bottom of the armrest is fixedly connected with a telescopic protective cover.

A further improvement of the technical solution of the utility model is that the backrest mechanism includes a second motor and a second threaded rod, one end of the second motor shaft is fixedly connected to one end of the second threaded rod, and a driving block is threadedly connected to the surface of the second threaded rod.

A further improvement of the technical solution of the utility model is that: a support rod is rotatably connected inside the driving block, and one end of the support rod is rotatably connected to a support frame.

A further improvement of the technical solution of the utility model is that: a spring is fixedly connected to one side of the support frame, one end of the spring is fixedly connected to a top plate, and one side of the top plate overlaps with one side of the telescopic cushion.

Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

1. The utility model provides a chair and a chair backrest, which adopts the mutual cooperation among moving wheels, support rods, support blocks, support columns, motor 1, threaded rod 1, threaded sleeve, and fixed columns. By starting motor 1, under the action of the rotation of the motor shaft, the threaded rod 1 rotates to move the threaded sleeve upward, and under the thrust of the threaded sleeve, the support plate moves upward, so that the height of the chair can be adjusted, making the height adjustment of the chair more convenient. At the same time, the arrangement of the support column and the fixed column makes the chair more stable during adjustment, which solves the problem that the chair is often provided with a height adjustment function in order to better adapt to people of different heights, but the operation is relatively cumbersome and inconvenient to use during the adjustment process.

2. The utility model provides a chair and a chair backrest, which adopts the mutual cooperation among motor 2, threaded rod 2, driving block, support rod, support frame, spring and top plate. By starting motor 2, under the action of the rotation of the rotating shaft of motor 2, threaded rod 2 drives the driving block to move closer to the middle of threaded rod 2, so that the support rod pushes the support frame to move, and at the same time, under the thrust of the support frame, the top plate pushes the telescopic cushion to be telescopic, so that the protrusion degree of the lumbar pillow can be accurately adjusted according to the habits of the users. At the same time, through the setting of the spring, the elasticity of the lumbar pillow is better, and the chair is more comfortable when used. This solves the problem that in order to make the chair more comfortable during use, a lumbar pillow is often set at the chair backrest, but the protrusion degree of the lumbar pillow of the existing chair is not convenient to adjust according to the habits of the users, and there is a certain inconvenience in use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the main structure of the utility model;

Fig. 2 is a schematic cross-sectional view of the utility model;

FIG3 is an enlarged schematic diagram of the structure of FIG2A of the present invention;

FIG. 4 is an enlarged structural schematic diagram of FIG. 2B of the present invention.

In the figure: 1. support mechanism; 11. moving wheel; 12. support rod; 13. support block; 14. support column; 15. motor 1; 16. threaded rod 1; 17. threaded sleeve; 18. fixed column; 2. seat mechanism; 21. support plate; 22. telescopic cushion; 23. electric telescopic rod; 24. armrest; 25. telescopic protective cover; 3. backrest mechanism; 31. motor 2; 32. threaded rod 2; 33. drive block; 34. support rod; 35. support frame; 36. spring; 37. top plate.

Detailed ways

The present invention is further described in detail below in conjunction with the embodiments:

Example 1

As shown in Figures 1-4, the utility model provides a chair and a chair backrest, including a support mechanism 1, the top of the support mechanism 1 is fixedly connected to a seat mechanism 2, and the inside of the seat mechanism 2 is fixedly connected to a backrest mechanism 3; the support mechanism 1 includes a moving wheel 11 and a support rod 12, the top of the moving wheel 11 is fixedly connected to one end of the support rod 12, the other end of the support rod 12 is fixedly connected to a support block 13, and the top of the support block 13 is fixedly connected to a support column 14; the bottom of the inner cavity of the support column 14 is fixedly connected to a motor 15, the top of the rotating shaft of the motor 15 is fixedly connected to a threaded rod 16, the surface of the threaded rod 16 is threadedly connected to a threaded sleeve 17, and the top of the support column 14 is overlapped with a fixed column 18.

In this embodiment, by starting the motor 15, under the action of the rotation of the motor 15 shaft, the threaded rod 16 rotates to make the threaded sleeve 17 move upward, and under the thrust of the threaded sleeve 17, the support plate 21 moves upward, so that the height of the chair can be adjusted, making the height adjustment of the chair more convenient. At the same time, the setting of the support column 14 and the fixed column 18 makes the chair more stable during adjustment, which solves the problem that the chair is often provided with a height adjustment function to better adapt to people of different heights, but the operation is cumbersome and inconvenient to use during the adjustment process.

Example 2

As shown in Figures 1-4, based on Example 1, the utility model provides a technical solution: preferably, the seat mechanism 2 includes a support plate 21 and a telescopic cushion 22, the surface of the support plate 21 is fixedly connected to the bottom of the telescopic cushion 22, the top of the support plate 21 is fixedly connected to an electric telescopic rod 23, the top of the electric telescopic rod 23 is fixedly connected to an armrest 24, and the bottom of the armrest 24 is fixedly connected to a telescopic protective cover 25.

In this embodiment, by starting the electric telescopic rod 23 and adjusting the height of the armrest 24 during use, the comfort of the chair is further improved. At the same time, the setting of the movable wheels 11 allows the chair to be moved during use, making it more convenient to use.

Example 3

As shown in Figures 1-4, on the basis of Example 1, the utility model provides a technical solution: preferably, the backrest mechanism 3 includes a motor 2 31 and a threaded rod 2 32, one end of the rotating shaft of the motor 2 31 is fixedly connected to one end of the threaded rod 2 32, the surface of the threaded rod 2 32 is threadedly connected with a driving block 33, the inside of the driving block 33 is rotatably connected with a support rod 34, one end of the support rod 34 is rotatably connected to a support frame 35, one side of the support frame 35 is fixedly connected with a spring 36, one end of the spring 36 is fixedly connected with a top plate 37, and one side of the top plate 37 overlaps with one side of the telescopic cushion 22.

In this embodiment, by starting the motor 2 31, under the action of the rotation of the shaft of the motor 2 31, the threaded rod 2 32 drives the driving block 33 to move closer to the middle of the threaded rod 2 32, so that the support rod 34 pushes the support frame 35 to move, and at the same time, under the thrust of the support frame 35, the top plate 37 pushes the telescopic cushion 22 to retract, so that the protrusion of the lumbar pillow can be accurately adjusted according to the habits of the user. At the same time, through the setting of the spring 36, the elasticity of the lumbar pillow is better, and the chair is more comfortable to use. This solves the problem that in order to make the chair more comfortable during use, a lumbar pillow is often set at the back of the chair, but the protrusion of the lumbar pillow of the existing chair is not convenient to adjust according to the habits of the user, and there is a certain inconvenience in use.

The working principle of this chair and chair back is described in detail below.

As shown in Fig. 1-4, when using the chair, by starting the motor 15, under the action of the rotation shaft of the motor 15, the threaded rod 16 rotates to make the threaded sleeve 17 move upward, and under the thrust of the threaded sleeve 17, the support plate 21 moves upward, so that the height of the chair can be adjusted, making the height adjustment of the chair more convenient. At the same time, the setting of the support column 14 and the fixed column 18 makes the chair more stable during adjustment. By starting the motor 2 31, under the action of the rotation shaft of the motor 2 31, the threaded rod 2 32 drives the driving block 33 to the middle of the threaded rod 2 32. The support rod 34 pushes the support frame 35 to move. At the same time, under the thrust of the support frame 35, the top plate 37 pushes the telescopic cushion 22 to retract, so that the protrusion of the lumbar pillow can be accurately adjusted according to the habits of the user. At the same time, the spring 36 is set to make the lumbar pillow more elastic and the chair more comfortable to use. When in use, the height of the armrest 24 can be adjusted by starting the electric telescopic rod 23, so that the comfort of the chair is further improved. At the same time, the setting of the moving wheel 11 allows the chair to be moved during use, which is more convenient to use.

The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims (6)

1. A chair and a chair backrest, comprising a support mechanism (1), characterized in that: a seat mechanism (2) is fixedly connected to the top of the support mechanism (1), and a backrest mechanism (3) is fixedly connected to the inside of the seat mechanism (2); The support mechanism (1) comprises a moving wheel (11) and a support rod (12); the top of the moving wheel (11) is fixedly connected to one end of the support rod (12); the other end of the support rod (12) is fixedly connected to a support block (13); the top of the support block (13) is fixedly connected to a support column (14); A motor 1 (15) is fixedly connected to the bottom of the inner cavity of the support column (14), a threaded rod 1 (16) is fixedly connected to the top of the rotating shaft of the motor 1 (15), a threaded sleeve (17) is threadedly connected to the surface of the threaded rod 1 (16), and a fixing column (18) is overlapped on the top of the support column (14). 2. A chair and a chair back according to claim 1, characterized in that: the seat mechanism (2) includes a support plate (21) and a telescopic cushion (22), the surface of the support plate (21) is fixedly connected to the bottom of the telescopic cushion (22), and the top of the support plate (21) is fixedly connected to an electric telescopic rod (23). 3. A chair and a chair back according to claim 2, characterized in that: the top of the electric telescopic rod (23) is fixedly connected to an armrest (24), and the bottom of the armrest (24) is fixedly connected to a telescopic protective cover (25). 4. A chair and a chair backrest according to claim 3, characterized in that: the backrest mechanism (3) comprises a second motor (31) and a second threaded rod (32), one end of the rotating shaft of the second motor (31) is fixedly connected to one end of the second threaded rod (32), and a driving block (33) is threadedly connected to the surface of the second threaded rod (32). 5. A chair and a chair back according to claim 4, characterized in that: a support rod (34) is rotatably connected inside the driving block (33), and one end of the support rod (34) is rotatably connected to a support frame (35). 6. A chair and a chair back according to claim 5, characterized in that: a spring (36) is fixedly connected to one side of the support frame (35), one end of the spring (36) is fixedly connected to a top plate (37), and one side of the top plate (37) overlaps with one side of the telescopic cushion (22).