Leather chair with adjustable backrest angle

Abstract

The utility model relates to the technical field and discloses a leather chair with an adjustable backrest angle. According to the invention, the lower back backup plate is used as a main back plate component, and the connecting groove formed in the side surface of the lower back backup plate is used as a channel structure, so that the turnover rod can be conveniently inserted into the channel structure. A device box is connected to the side surface of the lower back backup plate, a motor connected to the side surface of the interior of the device box drives a threaded shaft to rotate, enables a traction base to move on the horizontal plane and drives one end of an overturning rod to move, and a simple lever structure is formed by means of insertion connection between the overturning rod and a lever shaft. The angle of the waist arched pillow connected with the other end of the overturning rod can be adjusted to fit the waist of a person, and the whole process is controlled by a switch. Through the structure, the comfort of a user is greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of leather chairs, and particularly relates to a leather chair with adjustable backrest angle. BACKGROUND

[0002] An office leather chair is a chair specially designed for office environments. The surface of the office leather chair is usually covered with leather, which not only looks high-end, but also is easy to clean and maintain. The leather can be real leather or artificial leather. Moreover, the office leather chair design focuses on comfort to meet the needs of long hours of work. They usually have good seat cushions and backrest support, as well as adjustable armrests.

[0003] As disclosed in the publication No. CN218127696U, a staff chair with adjustable backrest angle and height is disclosed, which comprises a main body height adjusting mechanism, a backrest angle adjusting mechanism and a clamping replacement mechanism. One end of the main body height adjusting mechanism is connected with the backrest angle adjusting mechanism, and the top end of the main body height adjusting mechanism is provided with the clamping replacement mechanism. In the use of this staff chair, the user can rotate and adjust the seat plate and the backrest bottom frame through the connection of the secondary shaft and the adjusting main shaft to adjust to the appropriate angle, and then rotate and screw the adjusting bolts distributed at both ends of the adjusting main shaft into the interior of the adjusting main shaft and the secondary shaft to fix the rotational connection therebetween, so that the angle adjustment process according to different use requirements is achieved. When the height of the backrest plate is not suitable, the backrest plate can be adjusted to be higher or lower through the telescopic frame to adapt to people of different heights and improve the overall flexibility.

[0004] However, it is found in actual use that the traditional backrest adjusting mode is to turn over the chair back, which is relatively backward at present. Nowadays, the design of chairs pursues more ergonomics, that is, there is a certain support for the waist and back of a person, so the traditional adjusting mode needs to be closer to the person, and the structure needs to be used to fit the waist of the person to increase the use experience and improve the product value. CONTENT OF THE UTILITY MODEL

[0005] The application aims to solve the problem of designing a structure to fit the waist of a person, and provides a leather chair with adjustable backrest angle.

[0006] The technical scheme adopted by the present application is as follows: a skin chair with adjustable backrest angle, a side surface of a lower backrest plate is provided with an adapter groove, the side surface of the lower backrest plate is fixedly connected with a device box, an inner side surface of the device box is connected with a lever shaft, the inner side surface of the device box is fixedly connected with a motor, a side surface of the motor is connected with a threaded shaft, a side surface of the threaded shaft is inserted with a traction base, a side surface of the traction base is connected with a turnover lever, an end side surface of the turnover lever relative to the traction base is connected with a waist arch-shaped pillow, and a side surface of the motor is provided with a switch.

[0007] By adopting the above technical scheme, an operator uses the lower backrest plate as a main back plate component, and the adapter groove provided on the lower backrest plate as a channel structure, so as to facilitate the insertion of the turnover lever. The motor in the device box drives the threaded shaft to rotate and moves the traction base on the horizontal plane, drives one end of the turnover lever to move, and the insertion between the turnover lever and the lever shaft forms a simple lever structure, so that the waist arch-shaped pillow connected to the other end of the turnover lever can be adjusted in angle to fit the waist of a person. The whole process is controlled by the switch. Through the above structure, the operator can adjust the angle of the waist arch-shaped pillow for fitting the waist by driving the motor, so that when the backrest of the whole chair is turned over, the person sitting on it can always fit the waist, which is more in line with ergonomics and greatly increases the comfort of use, and the control by the motor is more labor-saving and convenient.

[0008] The lower backrest plate is used as a main back component, and the device box component is mainly provided with the adapter groove for providing space for the turnover lever to turn over and adjust.

[0009] The motor on the device box is used as a power transmission component, the motor drives the threaded shaft to rotate and interacts with the traction base, and at the same time, the traction base surface is provided with an adapter structure for adapting one end of the turnover lever and keeping the turnover lever capable of rotating relatively, which has a certain flexibility.

[0010] The other end of the turnover lever is used for adapting the waist arch-shaped pillow, the movement of one end of the turnover lever forms a simple lever structure through the insertion between the lever shaft and the middle section of the turnover lever, so that the waist arch-shaped pillow can fit the waist of a person. The switch is used to control the whole process.

[0011] In a preferred embodiment, a side surface of the lower backrest plate is inserted with an adapter shaft, and a side surface of the adapter shaft is rotatably inserted with an upper backrest plate.

[0012] By adopting the technical scheme, the connecting shaft is used as a connecting component to connect the lower backrest and the upper backrest, and the upper backrest can rotate relative to the connecting shaft due to the insertion between the connecting shaft and the upper backrest, so that the upper backrest can be adjusted to rotate together with the lower backrest, and the whole process is more suitable for the waist and conforms to ergonomics.

[0013] In a preferred embodiment, the side surface of the upper backrest is provided with a connecting base, and the side surface of the connecting base is rotatably inserted with a supporting rod.

[0014] By adopting the technical scheme, the connecting base is used as a connecting component, the supporting rod on the connecting base is rotatable, and the other end of the supporting rod is connected to another component, so that the rotation angle of the whole supporting rod can be changed by sliding one end of the supporting rod, thereby realizing the rotation of the upper backrest.

[0015] In a preferred embodiment, the side surface of one end of the supporting rod is connected with a guide groove plate, and the side surface of one end of the connecting base is inserted with a limiting screw.

[0016] By adopting the technical scheme, the guide groove plate is used as a component to form a track, the two guide groove plates are symmetrically distributed around one end of the supporting rod, so that one end of the supporting rod slides on the track formed by the guide groove plates, and the guide groove plate is inserted with the limiting screw, thereby assisting the movement track of the supporting rod and making the adjustment more convenient.

[0017] In a preferred embodiment, the side surface of the limiting screw is inserted with a limiting nut.

[0018] By adopting the technical scheme, the limiting nut is used as a limiting component, and the limiting nut and the limiting screw interact with each other, when the limiting nut is tightened inward to increase the friction with the guide groove plate, one end of the supporting rod stops sliding, thereby making the structure of the supporting upper backrest more stable. The limiting nut is designed with a handle, which is convenient for the operator to operate.

[0019] In a preferred embodiment, the bottom surface of the lower backrest is fixedly connected with a chair cushion.

[0020] By adopting the technical scheme, the chair cushion is used as a contact component on which the user mainly sits, and the material of the chair cushion is soft cloth such as leather.

[0021] In a preferred embodiment, the upper surface of the chair cushion is fixedly connected with a plurality of handles.

[0022] By adopting the above technical scheme, the handle is used as an auxiliary component for the user to hold, and is mirror-imaged on both ends of the chair cushion.

[0023] In a preferred embodiment, the chair cushion is fixedly connected with a support post on one end side surface of the lower backrest.

[0024] By adopting the above technical scheme, the support post is used as a support component of the whole device, and the bottom shape is circular, so that the support is more stable and reliable.

[0025] As described above, by adopting the above technical scheme, the application has the following beneficial effects:

[0026] In the application, the lower backrest is used as a main back component, and the most important thing is to connect the device box component and open the connection groove for the whole turnover rod to have space when turning over and adjusting.

[0027] The motor on the device box is used as a power transmission component, the motor drives the threaded shaft to rotate and interacts with the traction base, and at the same time, the traction base surface has a connection base structure for connecting one end of the turnover rod and keeping the turnover rod relatively rotating, which has a certain flexibility.

[0028] The other end of the turnover rod is used to connect the waist arch-shaped pillow, and through the movement of one end of the turnover rod and the insertion between the lever shaft and the middle segment of the turnover rod, a simple lever structure is formed, so that the waist arch-shaped pillow can be attached to the waist of the person. The switch is used to control the whole process. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional structure diagram of the whole device of the application;

[0030] Figure 2 It is a back view structure diagram of the whole device in the application;

[0031] Figure 3 It is an internal detail diagram of the device box in the application;

[0032] Figure 4 It is a detail diagram of the support rod in the application.

[0033] Marked in the figure: 1, lower backrest; 2, connection groove; 3, device box; 4, lever shaft; 5, motor; 6, threaded rod; 7, traction base; 8, turnover rod; 9, waist arch-shaped pillow; 10, switch; 11, connection insertion shaft; 12, upper backrest; 13, connection base; 14, support rod; 15, guide groove plate; 16, limiting screw; 17, limiting nut; 18, chair cushion; 19, handle; 20, support post. DETAILED DESCRIPTION

[0034] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0035] Reference Figures 1-4 ,

[0036] Embodiment: A skin chair with adjustable backrest angle, the side surface of the lower back rest plate 1 is provided with a connecting groove 2, the side surface of the lower back rest plate 1 is fixedly connected with a device box 3, the inner side surface of the device box 3 is connected with a lever shaft 4, the inner side surface of the device box 3 is fixedly connected with a motor 5, the side surface of the motor 5 is connected with a threaded shaft 6, the side surface of the threaded shaft 6 is inserted with a traction base 7, the side surface of the traction base 7 is connected with a turnover lever 8, the side surface of one end of the turnover lever 8 relative to the traction base 7 is connected with a waist arch-shaped pillow 9, and the side surface of the motor 5 is provided with a switch 10.

[0037] The operator uses the lower back rest plate 1 as the main back plate component, and the connecting groove 2 provided on the lower back rest plate 1 as the channel structure to facilitate the insertion of the turnover lever 8. The motor 5 in the device box 3 drives the threaded shaft 6 to rotate and moves the traction base 7 on the horizontal plane, drives one end of the turnover lever 8 to move, and the insertion between the turnover lever 8 and the lever shaft 4 forms a simple lever structure, so that the waist arch-shaped pillow 9 connected to the other end of the turnover lever 8 can be adjusted in angle to fit the waist of a person. The whole process is controlled by the switch 10. Through the above structure, the operator can adjust the angle of the waist arch-shaped pillow 9 for fitting the waist by motor driving, so that when the whole chair backrest is turned over in angle, the person sitting on it can always fit the waist, which is more in line with ergonomics and greatly increases the comfort of use, and the motor control is more labor-saving and convenient.

[0038] The lower back rest plate 1 is used as the main back component, and the most important thing is that the device box 3 component is provided with the connecting groove 2 to provide space for the whole turnover lever 8 to turn over and adjust.

[0039] The motor 5 on the device box 3 is used as the power transmission component, the motor 5 drives the threaded shaft 6 to rotate and interacts with the traction base 7, and at the same time, the traction base 7 has a base structure on the surface for connecting one end of the turnover lever 8 and keeping the turnover lever 8 capable of rotating relatively, which has a certain flexibility.

[0040] The other end of the turnover rod 8 is used to connect the waist arch-shaped pillow 9. The movement of one end of the turnover rod 8, and the insertion between the lever shaft 4 and the middle part of the turnover rod 8 form a simple lever structure, so that the waist arch-shaped pillow 9 can be in close contact with the waist of the person. The switch 10 is used to control the whole process.

[0041] The side surface of the lower back rest 1 is inserted with the connecting insertion shaft 11, and the side surface of the connecting insertion shaft 11 is rotatably inserted with the upper back rest 12. The connecting insertion shaft 11 is used as a connecting component to connect the lower back rest 1 and the upper back rest 12 together. Due to the insertion between the connecting insertion shaft 11 and the upper back rest 12, the whole upper back rest 12 can be relatively rotated to adjust the angle of the waist arch-shaped pillow 9, so as to realize the coordinated turnover of the upper and lower back rests, and the whole process is more in close contact with the waist, which is in line with the ergonomics.

[0042] The side surface of the upper back rest 12 is provided with the connecting base 13, and the side surface of the connecting base 13 is rotatably inserted with the support rod 14. The connecting base 13 is used as a connecting component, and the support rod 14 on the connecting base 13 can be relatively rotated. The other end of the support rod 14 is connected to another component, so that the movement of one end of the sliding support rod 14 can realize the different turnover angles of the whole support rod 14, thereby realizing the angle turnover of the upper back rest 12.

[0043] The end of the support rod 14 opposite to the connecting base 13 is connected with the guide groove plate 15, and the end of the connecting base 13 opposite to the connecting base 13 is inserted with the limiting screw 16. The guide groove plate 15 is used as a track component, and two guide groove plates 15 are symmetrically distributed around one end of the support rod 14, so that one end of the support rod 14 slides on the track formed by the guide groove plates 15, and the guide groove plate 15 is inserted between the hole slot and the limiting screw 16. After the insertion, the guide groove plate 15 is used to assist the movement track of the support rod 14, so that the adjustment is more convenient.

[0044] The side surface of the limiting screw 16 is inserted with the limiting nut 17. The limiting nut 17 is used as a limiting component, and the limiting nut 17 interacts with the limiting screw 16. When the limiting nut 17 is tightened inward to increase the friction with the guide groove plate 15, one end of the support rod 14 stops sliding, so that the structure of the support upper back rest 12 tends to be stable. The limiting nut 17 is designed with a handle, which is convenient for the operator to operate.

[0045] The bottom surface of the lower back rest 1 is fixedly connected with the chair cushion 18. The chair cushion 18 is used as a contact component on which the user mainly sits, and the material is soft cloth such as leather.

[0046] The upper surface of the chair cushion 18 is fixedly connected with a plurality of handles 19. The handles 19 are used as auxiliary components for the user to hold hands conveniently, which are mirror distributed on both ends of the chair cushion 18.

[0047] The chair cushion 18 is fixedly connected with a support pile 20 on one end side surface of the lower back rest 1. The support pile 20 is used as a support component of the whole device, and the bottom shape is circular, so that the support is more stable and reliable.

[0048] The implementation principle of the skin chair embodiment with adjustable backrest angle is that the operator uses the lower back rest 1 as the main back plate component, and the connection groove 2 opened on the lower back rest 1 is used as a channel structure to facilitate the insertion of the turnover rod 8. The motor 5 in the device box 3 drives the threaded shaft 6 to rotate and moves the traction base 7 on the horizontal plane, drives one end of the turnover rod 8 to move, and then uses the insertion between the turnover rod 8 and the lever shaft 4 to form a simple lever structure, so that the waist arch pillow 9 connected to the other end of the turnover rod 8 can adjust the angle to fit the waist of the person. The whole process is controlled by the switch 10. Through the above structure, the operator can adjust the angle of the waist arch pillow 9 for fitting the waist by motor driving, so that when the backrest of the whole chair is turned over, the person sitting on it can always fit the waist, which is more in line with ergonomics, greatly increasing the comfort of use, and the motor control is more labor-saving and convenient.

[0049] The lower back rest 1 is used as the main back component, and the most important thing is to connect the device box 3 component and open the connection groove 2 for the whole turnover rod 8 to have space when turning over and adjusting.

[0050] The motor 5 connected on the device box 3 is used as a power transmission component, the motor 5 drives the threaded shaft 6 to rotate and interacts with the traction base 7, and at the same time, the traction base 7 has a base structure connected on the surface, which is used for connecting one end of the turnover rod 8 and keeping the turnover rod 8 can rotate relatively, and has a certain flexibility.

[0051] The other end of the turnover rod 8 is used for connecting the waist arch pillow 9, through the movement of one end of the turnover rod 8, and then through the insertion between the lever shaft 4 and the middle section of the turnover rod 8, a simple lever structure is formed, so that the waist arch pillow 9 can be fitted with the waist of the person. The switch 10 is used to control the whole process.

[0052] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the same; although the present application has been described in detail with reference to the foregoing examples, it should be understood by those of ordinary skill in the art that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An adjustable backrest angle leather chair comprising a lower backrest (1), characterized in that: The side surface of the lower back rest plate (1) is provided with a connecting groove (2), the side surface of the lower back rest plate (1) is fixedly connected with a device box (3), the inner side surface of the device box (3) is connected with a lever shaft (4), the inner side surface of the device box (3) is fixedly connected with a motor (5), the side surface of the motor (5) is connected with a threaded shaft (6), the side surface of the threaded shaft (6) is inserted with a traction base (7), the side surface of the traction base (7) is connected with a turnover lever (8), one end of the side surface of the turnover lever (8) is connected with a waist arc pillow (9) relative to the traction base (7), and the side surface of the motor (5) is provided with a switch (10).

2. The skin chair with adjustable backrest angle according to claim 1, characterized in that: The side surface of the lower back rest plate (1) is inserted with a connecting plug shaft (11), and the side surface of the connecting plug shaft (11) is rotatably inserted with an upper back rest plate (12).

3. The skin chair with adjustable backrest angle according to claim 1, characterized in that: The side surface of the upper back rest plate (12) is provided with a connecting base (13), and the side surface of the connecting base (13) is rotatably inserted with a supporting rod (14).

4. The skin chair with adjustable backrest angle according to claim 1, characterized in that: One end of the side surface of the supporting rod (14) is connected with a guide groove plate (15) relative to the connecting base (13), and one end of the side surface of the connecting base (13) is inserted with a limiting screw (16) relative to the connecting base (13).

5. The skin chair with adjustable backrest angle according to claim 1, characterized in that: The side surface of the limiting screw (16) is inserted with a limiting nut (17).

6. The skin chair with adjustable backrest angle according to claim 1, characterized in that: The bottom surface of the lower back rest plate (1) is fixedly connected with a chair cushion (18).

7. The skin chair with adjustable backrest angle according to claim 1, characterized in that: The upper surface of the chair cushion (18) is fixedly connected with a plurality of handles (19).

8. The adjustable back angle leather chair of claim 1, wherein: One end of the side surface of the chair cushion (18) is fixedly connected with a supporting pile (20) relative to the lower back rest plate (1).

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