CN210112693U

CN210112693U - Chair and chair back lifting mechanism thereof

Info

Publication number: CN210112693U
Application number: CN201920913638.2U
Authority: CN
Inventors: 寿鑫涛
Original assignee: Zhuji Small Animal Health Technology Co Ltd
Current assignee: Zhuji Small Animal Health Technology Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-02-25
Anticipated expiration: 2029-06-18

Abstract

The utility model relates to a chair and back of the chair elevating system thereof, a back of the chair elevating system, including link, gear box, screw rod, nut, fixed plate and the first motor that is used for connecting the back of the chair and seat support, the gear box is fixed on the fixed plate, and by a motor drive, the gear box is connected with the screw rod, and the nut cover is established on the screw rod, and the nut is fixed with the link, still be equipped with the guide rail on the fixed plate, link and guide rail sliding connection. The utility model discloses a special link is with the back of the chair and seat support sliding connection, and by fixing the motor drive screw rod on chassis or seat support for the displacement takes place for the nut on the screw rod, and then the drive goes up and down with the fixed link of nut, has realized the electrical control of the back of the chair, convenient operation.

Description

Chair and chair back lifting mechanism thereof

Technical Field

The utility model relates to a chair and back of chair elevating system thereof.

Background

In daily life, children need to use stools and seats frequently due to living needs, but under most conditions, stools and seats suitable for adults are not suitable for children to use, and even children can have accidental injury when using adult stools and seats.

In addition, most office chairs can only lift the part above the base of the supporting legs of the chair integrally, but cannot adjust the backrest of the chair, so that the office chair is not beneficial to sitting of tall people, and is particularly beneficial to supporting of the waist.

Disclosure of Invention

In order to solve the above technical problem, a first object of the present invention is to provide a chair back lifting mechanism with convenient adjustment, and a second object of the present invention is to provide a chair.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a back of chair elevating system, is including link, gear box, screw rod, nut, fixed plate and the first motor that is used for connecting the back of the chair and seat support, the gear box is fixed on the fixed plate, and by a motor drive, the gear box is connected with the screw rod, and the nut cover is established on the screw rod, and the nut is fixed with the link, still be equipped with the guide rail on the fixed plate, link and guide rail sliding connection.

As a preferable scheme: the guide rail and the horizontal plane are obliquely arranged, and the guide rail and the screw rod are arranged in parallel.

As a preferable scheme: the two connecting frames and the two fixing plates are respectively fixed on the two sides of the chair back, and the lower parts of the two connecting frames are respectively connected with the guide rails on the fixing plates on the two sides of the bottom frame or the chair seat in a sliding manner.

As a preferable scheme: the first motor is fixed on the chair seat or the bottom frame, and the first motor drives the gear boxes on two sides simultaneously through the first transmission shaft.

The utility model provides a chair, includes back of the chair, seat support and chassis, the back of the chair passes through the link to be fixed with the seat support, the chassis is fixed in the bottom of seat support, adopts above-mentioned arbitrary one chair elevating system.

The utility model discloses a special link is with the back of the chair and seat support sliding connection, and by fixing the motor drive screw rod on chassis or seat support for the displacement takes place for the nut on the screw rod, and then the drive goes up and down with the fixed link of nut, has realized the electrical control of the back of the chair, convenient operation.

Drawings

Fig. 1 is a schematic view of the overall structure of the chair of the present invention.

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

Fig. 3 is a schematic structural view of the utility model after the chair seat and part of the connecting frame are removed.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A chair as shown in fig. 1 to 3, including back of the chair 1, seat support 3, chassis 6 and first motor 10, back of the chair 1 is fixed with seat support 3 through link 2, chassis 6 is fixed in the bottom of seat support 3, the one end and the back of the chair 1 of link 2 are fixed, the other end and chassis 6 or 3 sliding connection of seat support, and by the oblique rear lift of first motor 10 drive link 2 along seat support 3.

The connecting frame 2 is tubular, the upper portion of the connecting frame is a chair back connecting portion, the lower portion of the connecting frame is a sliding portion, and an included angle between the chair back connecting portion and the sliding portion is an obtuse angle. The fixing plate 4 is arranged on the base frame 6 or the chair seat 3, the guide rail 41 which is obliquely arranged is fixed on the fixing plate 4, and the connecting frame 2 is in sliding connection with the guide rail 41. The connecting frame is bent, the upper part of the connecting frame is parallel to the chair back, so that the chair back is convenient to fix, the lower part of the connecting frame is parallel to the guide rail, so that the chair back can conveniently move according to a fixed track, and preferably, the guide rail for the operation of the chair back forms an included angle of 45 degrees with the horizontal plane.

The fixing plate 4 is further fixed with a gear box 12 driven by a first motor 10, the gear box 12 is connected with a screw rod 5, 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 is fixed with the connecting frame 2. Adopt the mode of electric adjustment, the user's of being convenient for operation has overcome children and has been difficult to the defect of the chair of manual regulation because of the strength is less, and the electric adjustment security is higher.

The two connecting frames 3 and the two fixing plates 4 are both provided, the upper parts of the two connecting frames 3 are respectively fixed with the two sides of the chair back 1, and the lower parts of the two connecting frames 3 are respectively in sliding connection with the bottom frame 6 or the guide rails 41 on the fixing plates 4 on the two sides of the chair seat 3. The two sides of the chair back are connected with the two sides of the chair seat or the bottom frame, so that the movement is more stable.

Two underframe 6 are fixed respectively in the both sides of seat support 3 bottom, and are equipped with elevating system in the underframe 6. The chassis 6 is for becoming the I-shaped that falls, and upper portion is mutually perpendicular fixed supporting beam and sleeve pipe 61, and the lower part is mutually perpendicular fixed horizontal support pole 7 and fixed pipe 62, sleeve pipe 61 slip cover is established on fixed pipe 62, both ends are equipped with pulley 8 around the lower part of horizontal support pole 7.

The lifting mechanism comprises a second screw, 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 sleeve 61, and the second screw is connected with the second nut and the second gear box.

The first motor 10 is fixed on the seat 3 or the bottom 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 further fixed on the seat 3 or the bottom frame 6, and the second motor 13 drives the second gear boxes on the two sides through a second transmission shaft 14. The second transmission shaft 14 and the first transmission shaft 11 are arranged in parallel.

It should be noted that the above embodiments are merely representative examples of the present invention. The utility model can also have a plurality of deformations. Any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. A chair back lifting mechanism is characterized in that: including link (2), gear box (12), screw rod (5), nut (9), fixed plate (4) and first motor (10) that are used for connecting back of the chair (1) and seat support (3), gear box (12) are fixed on fixed plate (4), and are driven by first motor (10), gear box (12) are connected with screw rod (5), and nut (9) cover is established on screw rod (5), and nut (9) are fixed with link (2), still be equipped with guide rail (41) on fixed plate (4), link (2) and guide rail (41) sliding connection.

2. The chair back lift mechanism of claim 1, wherein: the guide rail (41) is obliquely arranged with the horizontal plane, and the guide rail (41) and the screw rod (5) are arranged in parallel.

3. The chair back lift mechanism of claim 1, wherein: the chair is characterized in that the connecting frames (2) and the fixing plates (4) are two, 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 connected with the bottom frame (6) or the guide rails (41) on the fixing plates (4) on the two sides of the chair seat (3) in a sliding mode respectively.

4. The chair back lift mechanism of claim 3, wherein: the first motor (10) is fixed on the chair seat (3) or the bottom frame (6), and the first motor (10) drives the gear boxes (12) on two sides simultaneously through the first transmission shaft (11).

5. The utility model provides a chair, includes back of the chair (1), seat support (3) and chassis (6), back of the chair (1) is fixed with seat support (3) through link (2), the bottom at seat support (3), its characterized in that are fixed in chassis (6): the chair back lifting mechanism of any one of the preceding claims 1 to 4.