A chair
By using electric-adjusted connecting frames and motor drive systems in the chair, the problem of inconvenient adjustment of the existing chair back is solved, and the comfort and safety of use is improved, which is suitable for the needs of children and people with high figures.
Patent Information
- Application Number
- CN201910525097.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-06-18
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2039-06-18
AI Technical Summary
The existing child seats and office chairs are difficult to adjust the back, which is not suitable for children and people with tall figures to poor waist support when used, and manual adjustment is inconvenient.
A chair including a chair back, a seat, a base frame and a motor is designed, and is fixed to the chair seat through a connecting frame, and the motor drives the connecting frame to lift and lower the oblique rear of the chair seat to realize the electric adjustment of the chair back.
It realizes convenient adjustment of the chair back, improves the comfort and safety of chairs for children and people with good figures, and overcomes the problem of insufficient manual adjustment.
Smart Images
Figure CN110123061B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a chair. Background Art
[0002] In daily life, children often need to use benches and seats due to life needs, but in most cases, benches and seats suitable for adults are not suitable for children, and children may even suffer accidental injuries when using adult benches and seats. In the prior art, although most child seats have the function of adjusting the seat height, manual adjustment is usually used, which is not very convenient to use. In addition, general child seats can only adjust the height, but cannot adjust the backrest, which does not meet the growth and development needs of adolescents.
[0003] In addition, most office chairs can only lift and lower the part above the base of the chair's supporting feet as a whole, but cannot adjust the backrest of the chair, which is not conducive to the seating of tall people, especially for the support of the waist. Summary of the invention
[0004] In order to solve the above technical problems, an object of the present invention is to provide a chair with a simple structure and a backrest that is easy to adjust.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions:
[0006] A chair comprises a backrest, a seat, a base frame and a first motor, wherein the backrest is fixed to the seat via a connecting frame, the base frame is fixed to the bottom of the seat, one end of the connecting frame is fixed to the backrest, and the other end is slidably connected to the base frame or the seat, and the connecting frame is driven by the first motor to rise and fall along the oblique rear of the seat.
[0007] As a preferred solution: the connecting frame is tubular, and the upper part is the seat back connecting part, the lower part is the sliding part, and the angle between the seat back connecting part and the sliding part is an obtuse angle.
[0008] As a preferred solution: a fixing plate is provided on the base frame or the seat, a guide rail arranged obliquely is fixed on the fixing plate, and the connecting frame is slidably connected to the guide rail.
[0009] As a preferred solution: a gear box driven by the first motor is also fixed on the fixed plate, the gear box is connected to a screw rod, and a nut is sleeved on the screw rod, the screw rod is parallel to the guide rail, and the nut is fixed to the connecting frame.
[0010] As a preferred solution: there are two connecting frames and two fixing plates, the upper parts of the two connecting frames are fixed to the two sides of the chair back respectively, and the lower parts of the two connecting frames are slidably connected to the guide rails on the fixing plates on both sides of the base frame or the seat.
[0011] As a preferred solution: the first motor is fixed on the seat or the base frame, and the first motor drives the gear boxes on both sides simultaneously through the first transmission shaft.
[0012] As a preferred solution: the two base frames are respectively fixed on two sides of the bottom of the seat, and a lifting mechanism is arranged inside the base frames.
[0013] As a preferred solution: the base frame is in an inverted I-shape, the upper part is a supporting beam and a sleeve fixed vertically to each other, the lower part is a horizontal supporting rod and a fixed tube fixed vertically to each other, and the sleeve is slidably mounted on the fixed tube.
[0014] As a preferred solution: the lifting mechanism includes a second screw rod, a second nut and a second gear box, the second nut is fixed in the fixing tube, the second gear box is fixed in the sleeve, and the second screw rod connects the second nut and the second gear box.
[0015] As a preferred solution: a second motor is also fixed on the seat or the base frame, and the second motor drives the second gear boxes on both sides simultaneously through the second transmission shaft.
[0016] The present invention connects the chair back and the chair seat in a sliding manner through a special connecting frame, and a motor fixed on the base frame or the chair seat drives a screw rod, so that a nut on the screw rod is displaced, thereby driving the connecting frame fixed with the nut to rise and fall, thereby realizing electric adjustment of the chair back and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0018] Figure 2 It is a schematic diagram of the structure of the chair back and the chair seat of the present invention when they are raised.
[0019] Figure 3 This is a schematic diagram of the structure of the present invention after the seat and part of the connecting frame are removed. DETAILED DESCRIPTION
[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0021] like Figures 1 to 3 The chair shown includes a chair back 1, a seat 3, a base frame 6 and a first motor 10. The chair back 1 is fixed to the seat 3 via a connecting frame 2. The base frame 6 is fixed to the bottom of the seat 3. One end of the connecting frame 2 is fixed to the chair back 1, and the other end is slidably connected to the base frame 6 or the seat 3. The connecting frame 2 is driven by the first motor 10 to rise and fall along the oblique rear of the seat 3.
[0022] The connecting frame 2 is tubular, and the upper part is the backrest connecting part, and the lower part is the sliding part, and the angle between the backrest connecting part and the sliding part is an obtuse angle. The base frame 6 or the seat 3 is provided with a fixing plate 4, and a guide rail 41 arranged obliquely is fixed on the fixing plate 4, and the connecting frame 2 is slidably connected with the guide rail 41. The connecting frame is bent, and the upper part is arranged parallel to the backrest to facilitate the fixing of the backrest, and the lower part is arranged parallel to the guide rail to facilitate the movement of the backrest along a fixed track. As a preferred embodiment, the guide rail on which the backrest runs forms an angle of 45 degrees with the horizontal plane.
[0023] The fixing plate 4 is also fixed with a gear box 12 driven by the first motor 10, the gear box 12 is connected with a screw rod 5, and a nut 9 is sleeved on the screw rod 5, the screw rod 5 is parallel to the guide rail 41, and the nut 9 is fixed to the connecting frame 2. The electric adjustment method is convenient for users to operate, which overcomes the defect that children are not easy to operate manually adjusted chairs due to their small strength, and the electric adjustment is safer.
[0024] There are two connecting frames 2 and two fixing plates 4, the upper parts of the two connecting frames 2 are fixed to the two sides of the chair back 1, and the lower parts of the two connecting frames 2 are slidably connected to the guide rails 41 on the fixing plates 4 on the two sides of the bottom frame 6 or the seat 3. The two sides of the chair back are connected to the two sides of the seat or the bottom frame, and the movement is more stable.
[0025] Two base frames 6 are fixed on both sides of the bottom of the seat 3, and a lifting mechanism is arranged inside the base frame 6. The base frame 6 is in an inverted I-shape, with a supporting crossbeam and a sleeve 61 fixed vertically to each other at the upper part, and a horizontal support rod 7 and a fixed pipe 62 fixed vertically to each other at the lower part. The sleeve 61 is slidably sleeved on the fixed pipe 62, and pulleys 8 are arranged at the front and rear ends of the lower part of the horizontal support rod 7.
[0026] The lifting mechanism includes a second screw rod, a second nut and a second gear box. The second nut is fixed in the fixing tube 62, the second gear box is fixed in the sleeve 61, and the second screw rod connects the second nut and the second gear box.
[0027] The first motor 10 is fixed on the seat 3 or the base frame 6, and the first motor 10 drives the gear boxes 12 on both sides simultaneously through the first transmission shaft 11. A second motor 13 is also fixed on the seat 3 or the base frame 6, and the second motor 13 drives the second gear boxes on both sides simultaneously through the second transmission shaft 14. The second transmission shaft 14 and the first transmission shaft 11 are arranged parallel to each other.
[0028] It should be noted that the above embodiments are only representative examples of the present invention. The present invention can also have many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the essence of the present invention should be considered to belong to the protection scope of the present invention.
Claims
1. A chair, comprising a chair back (1), a seat (3), a base frame (6) and a first motor (10), wherein the chair back (1) is fixed to the seat (3) via a connecting frame (2), and the base frame (6) is fixed to the bottom of the seat (3), characterized in that: One end of the connecting frame (2) is fixed to the chair back (1), and the other end is slidably connected to the base frame (6) or the chair seat (3), and the connecting frame (2) is driven by the first motor (10) to rise and fall along the oblique rear of the chair seat (3); The connecting frame (2) is tubular, and the upper part is a seat back connecting part, and the lower part is a sliding part, and the included angle between the seat back connecting part and the sliding part is an obtuse angle; The base frame (6) or the seat (3) is provided with a fixing plate (4), an obliquely arranged guide rail (41) is fixed on the fixing plate (4), and the connecting frame (2) is slidably connected to the guide rail (41); A gear box (12) driven by a first motor (10) is also fixed on the fixing plate (4), the gear box (12) is connected to a screw rod (5), and a nut (9) is sleeved on the screw rod (5), the screw rod (5) is parallel to the guide rail (41), and the nut (9) is fixed to the connecting frame (2).
2. A chair according to claim 1, characterized in that: There are two connecting frames (2) and two fixing plates (4), the upper parts of the two connecting frames (2) are fixed to the two sides of the chair back (1) respectively, and the lower parts of the two connecting frames (2) are slidably connected to the guide rails (41) on the fixing plates (4) on the two sides of the base frame (6) or the seat (3).
3. A chair according to claim 2, characterized in that: The first motor (10) is fixed on the seat (3) or the base frame (6), and the first motor (10) drives the gear boxes (12) on both sides simultaneously through the first transmission shaft (11).
4. A chair according to claim 1, characterized in that: The two bottom frames (6) are respectively fixed on two sides of the bottom of the seat (3), and a lifting mechanism is arranged inside the bottom frame (6).
5. A chair according to claim 4, characterized in that: The base frame (6) is in an inverted I-shape, the upper part is a supporting crossbeam and a sleeve (61) fixed vertically to each other, and the lower part is a horizontal supporting rod (7) and a fixed pipe (62) fixed vertically to each other, and the sleeve (61) is slidably mounted on the fixed pipe (62).
6. A chair according to claim 5, characterized in that: The lifting mechanism comprises a second screw rod, a second nut and a second gear box, the second nut is fixed in a fixing tube (62), the second gear box is fixed in a sleeve (61), and the second screw rod connects the second nut and the second gear box.
7. A chair according to claim 6, characterized in that: A second motor (13) is also fixed on the seat (3) or the base frame (6), and the second motor (13) simultaneously drives the second gear boxes on both sides through the second transmission shaft (14).