CN110123061A - A kind of chair - Google Patents

Abstract

The invention relates to a chair, comprising a chair back, a seat, a bottom frame and a first motor, the chair back is fixed with the seat through a connecting frame, the bottom frame is fixed at the bottom of the seat, and one end of the connecting frame It is fixed with the back of the chair, and the other end is slidably connected with the base frame or the chair seat, and the connecting frame is driven by the first motor to lift up and down along the oblique rear of the seat base. The present invention slides and connects the chair back and the chair seat through a special connecting frame, and drives the screw rod by a motor fixed on the bottom frame or the seat seat, so that the nut on the screw rod is displaced, and then the connecting frame fixed with the nut is driven up and down, realizing The electric adjustment of the back of the chair is realized, which is easy to operate.

Description

a chair

technical field

The present invention relates to a chair.

Background technique

In daily life, children often need to use benches and seats due to the needs of their lives, but in most cases, benches and seats suitable for adults are not suitable for children, and even children will have problems when using adult benches and seats. In the case of accidental injury, in the prior art, although most child seats have the function of adjusting the height of the seat, at present, manual adjustment is usually used, which is not very convenient to use, and the general child seat can only adjust the height, not the height. Adjusting the backrest does not satisfy the growth and development of teenagers.

In addition, most office chairs can only lift up and down the parts above the supporting foot base of the chair 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.

Contents of the invention

In order to solve the above-mentioned technical problems, the object of the present invention is to provide a chair with a simple structure and a chair back that is easy to adjust.

In order to achieve the above object, the present invention adopts the following technical solutions:

A chair, comprising a chair back, a seat, a base frame and a first motor, the chair back is fixed to the seat base through a connecting frame, the base frame is fixed on the bottom of the seat seat, one end of the connecting frame is connected to the seat back fixed, the other end is slidably connected to the bottom frame or the seat, and the connecting frame is driven by the first motor to lift up and down along the oblique rear of the seat.

As a preferred solution: the connecting frame is tubular, the upper part is the chair back connecting part, the lower part is the sliding part, and the included angle between the chair back connecting part and the sliding part is an obtuse angle.

As a preferred solution: the bottom frame or the seat is provided with a fixing plate, and a guide rail arranged obliquely is fixed on the fixing plate, and the connecting frame is slidably connected with the guide rail.

As a preferred solution: the fixed plate is also fixed with a gear box driven by the first motor, the gear box is connected with a screw, and a nut is sleeved on the screw, the screw is parallel to the guide rail, and the nut is fixed with the connecting frame.

As a preferred solution: the connecting frame and the fixing plate are two, the upper parts of the two connecting frames are respectively fixed with the two sides of the chair back, and the lower parts of the two connecting frames are respectively connected with the fixing plates on both sides of the bottom frame or the seat rail slide connection.

As a preferred solution: the first motor is fixed on the seat or the chassis, and the first motor simultaneously drives the gear boxes on both sides through the first transmission shaft.

As an optimal solution: two underframes are respectively fixed on both sides of the bottom of the seat, and a lifting mechanism is provided inside the underframes.

As a preferred solution: the underframe is in an inverted I-shape, the upper part is a support beam and a sleeve vertically fixed to each other, the lower part is a horizontal support rod and a fixed tube vertically fixed to each other, and the sleeve is slidably sleeved on the fixed tube .

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 fixed tube, the second gear box is fixed in the casing, the second screw rod connects the second nut and the second gear box Two gearboxes.

As a preferred solution: the seat or the base frame is also fixed with a second motor, and the second motor simultaneously drives the second gear boxes on both sides through the second transmission shaft.

The present invention slides and connects the chair back and the chair seat through a special connecting frame, and drives the screw rod by a motor fixed on the bottom frame or the seat seat, so that the nut on the screw rod is displaced, and then the connecting frame fixed with the nut is driven up and down, realizing The electric adjustment of the back of the chair is realized, which is easy to operate.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the chair back and seat of the present invention when they are raised.

Fig. 3 is a structural schematic diagram of the present invention after removing the seat and part of the connecting frame.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

A kind of chair as shown in Fig. 1 to Fig. 3, comprises chair back 1, seat seat 3, chassis 6 and first motor 10, and described chair back 1 is fixed with chair seat 3 by connecting frame 2, and described chassis 6 is fixed on the bottom of the seat 3, one end of the connecting frame 2 is fixed to the seat back 1, and the other end is slidably connected to the bottom frame 6 or the seat 3, and the first motor 10 drives the connecting frame 2 to move along the seat 3. The oblique rear lift.

The connecting frame 2 is tubular, and the upper part is a chair back connecting part, and the lower part is a sliding part, and the angle between the chair back connecting part and the sliding part is an obtuse angle. The bottom frame 6 or the seat 3 is provided with a fixing plate 4 , on which a guide rail 41 arranged obliquely is fixed, 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 back of the chair to facilitate the fixing of the back of the chair. The lower part is arranged parallel to the guide rail to facilitate the movement of the back of the chair according to the fixed track. As an optimization, the guide rail on which the back of the chair runs is at an angle of 45 degrees to the horizontal plane.

The gear box 12 driven by the first motor 10 is also fixed on the fixed plate 4, the gear box 12 is connected with a screw rod 5, and the screw rod 5 is sleeved with a nut 9, the screw rod 5 is parallel to the guide rail 41, and the nut 9 Fix it with the connecting frame 2. The electric adjustment method is adopted, which is convenient for users to operate, and overcomes the defect that children are not easy to operate the manually adjusted chair due to their weak strength, and the electric adjustment is more secure.

The connecting frame 2 and the fixing plate 4 are two, the tops of the two connecting frames 2 are fixed with the both sides of the seat back 1 respectively, and the bottoms of the two connecting frames 2 are connected with the bottom frame 6 or the seat 3 sides on both sides respectively. The guide rail 41 on the fixed plate 4 is slidably connected. The two sides of the chair back are connected with the two sides of the seat or the chassis, so that the movement is more stable.

Two underframes 6 are fixed on both sides of the bottom of the seat 3 respectively, and a lifting mechanism is arranged inside the underframes 6 . The underframe 6 is in an inverted I shape, the upper part is a support beam and a sleeve 61 fixed vertically to each other, the lower part is a horizontal support rod 7 and a fixed tube 62 fixed vertically to each other, and the sleeve 61 is slidably sleeved on the fixed tube 62, the front and rear ends of the bottom of the horizontal support bar 7 are provided with pulleys 8 .

The lifting mechanism includes a second screw rod, a second nut and a second gear box, the second nut is fixed in the fixed pipe 62, the second gear box is fixed in the casing 61, and the second screw rod connects the second nut with the second gear box. Two gearboxes.

The first motor 10 is fixed on the seat 3 or the chassis 6 , and the first motor 10 simultaneously drives the gear boxes 12 on both sides through the first transmission shaft 11 . A second motor 13 is also fixed on the seat 3 or the bottom frame 6 , and the second motor 13 simultaneously drives the second gear boxes on both sides through the second transmission shaft 14 . The second transmission shaft 14 is arranged parallel to the first transmission shaft 11 .

It should be noted that the above embodiments are only representative examples of the present invention. The present invention is also capable of many variations. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the essence of the present invention shall be deemed to belong to the protection scope of the present invention.

Claims (10)

1. a kind of chair, including the chair back (1), seat (3), chassis (6) and first motor (10), the chair back (1) pass through connection Frame (2) and seat (3) are fixed, and the chassis (6) is fixed on the bottom of seat (3), it is characterised in that: the connection frame (2) One end and the chair back (1) are fixed, and the other end is slidably connected with chassis (6) or seat (3), and are drivingly connected by first motor (10) Frame (2) is gone up and down along the rear ramp of seat (3).

2. a kind of chair according to claim 1, it is characterised in that: the connection frame (2) is tubulose, and top is the chair back Interconnecting piece, lower part are sliding part, and the angle of chair back interconnecting piece and sliding part is obtuse angle.

3. a kind of chair according to claim 1, it is characterised in that: the chassis (6) or seat (3) are equipped with and fix Plate (4) is fixed with angularly disposed guide rail (41) in fixed plate (4), and the connection frame (2) is slidably connected with guide rail (41).

4. a kind of chair according to claim 3, it is characterised in that: be further fixed on the fixed plate (4) by the first electricity The gear-box (12) of machine (10) driving, gear-box (12) is connected with screw rod (5), and nut (9) are arranged on screw rod (5), described Screw rod (5) is parallel with guide rail (41), and nut (9) and connection frame (2) are fixed.

5. a kind of chair according to claim 3, it is characterised in that: the connection frame (2) and fixed plate (4) are two A, two sides of the top of two connection frames (2) respectively with the chair back (1) are fixed, the lower part of two connection frames (3) respectively with chassis (6) or the guide rail (41) in the fixed plate (4) of seat (3) two sides is slidably connected.

6. a kind of chair according to claim 5, it is characterised in that: the first motor (10) be fixed on seat (3) or On person's chassis (6), and first motor (10) drives the gear-box (12) of two sides by the first transmission shaft (11) simultaneously.

7. a kind of chair according to claim 1, it is characterised in that: two chassis (6) are separately fixed at seat (3) bottom Two sides, and chassis (6) in be equipped with elevating mechanism.

8. a kind of chair according to claim 1, it is characterised in that: the chassis (6) is at I-shaped, and top is phase The support beam mutually vertically fixed and casing (61), lower part is to be mutually perpendicular to fixed horizontal support bar (7) and fixing pipe (62), Described sleeve pipe (61) is slidably located on fixing pipe (62).

9. a kind of chair according to claim 8, it is characterised in that: the elevating mechanism includes the second screw rod, the second spiral shell Female and second gear case, the second nut are fixed in fixing pipe (62), and second gear case is fixed in casing (61), and described second Screw rod connects the second nut and second gear case.

10. a kind of chair according to claim 9, it is characterised in that: also fixed on the seat (3) or chassis (6) Have the second motor (13), and the second motor (13) drives the second gear case of two sides by second driving shaft (14) simultaneously.