CN205321830U

CN205321830U - Chair of back of chair liftable

Info

Publication number: CN205321830U
Application number: CN201520917911.0U
Authority: CN
Inventors: 张慧; 杨醒醒; 唐义甲; 董秀英
Original assignee: Fuyang Normal University
Current assignee: Fuyang Normal University
Priority date: 2015-11-11
Filing date: 2015-11-11
Publication date: 2016-06-22
Anticipated expiration: 2025-11-11

Abstract

The utility model discloses a chair of back of chair liftable, lift chair include chair body (1), engine (2), bull wheel circle (3), preceding coaxial circle (4), back coaxial circle (5), the back of the chair (6) that have the gear, belt (7), switch (8), wherein the motor is electric wire switching device on one side, and the bull wheel circle is connected to the another side, the belt is connected the bull wheel circle and is belonged to coaxial circle with front axle circle, front axle circle with the rear axle circle, the coaxial circle in back is the gear circle to inlay with the back of the chair of taking the gear, the utility model has the advantages of simple and reasonable structure, convenience of customers uses.

Description

A kind of liftable chair of the chair back

Technical field

This utility model relates to field of furniture, particularly relates to a kind of liftable chair of the chair back。

Background technology

Along with socioeconomic fast development, the time that people are sitting in office is more and more, and when we are when study and work, the sitting posture of people is different, and chair back height is required just difference；Under different occasions, to the chair back be rise be that the requirement dropped differs, existing chair can only regulate the height of seat, but cannot take into account for back；This utility patent solves this problem by the lifting of the chair back。

Summary of the invention

This utility model technical issues that need to address are:

Can not lift thus problem that people's comfort can not be improved to solve the chair back。

Can not according to the problem needing adjusting back of people in order to solve the chair back。

Technical solution of the present utility model is: a kind of liftable chair of the chair back, structure includes chair body, electromotor, bull wheel circle, front coaxial circles, rear coaxial circles, is with the cogged chair back, belt, power supply；Wherein motor is while being electric wire supply unit；Another side connects bull wheel circle, and bull wheel is flexible crosses coaxial circles before belt connects, and front coaxial circles and rear coaxial circles are belonging to coaxial circles, and rear coaxial circles is with gear, and inlays with the chair back with gear；Having groove after rear coaxial circles, what the chair back declined is partially disposed in groove。

After shift knob is clicked, electromotor works, and the great circle of rotation is taken turns by coaxial circles before belt drive, and the rear coaxial fenestra being in entity with front coaxial circles can be driven；The motion of rear coaxial circles so that the chair back inlayed with rear coaxial circles also can move therewith, thus realizing the lifting of the chair back。

The beneficial effects of the utility model are: can freely realize the lifting of the chair back, meet the needs of different human body and occasion；The height of free adjusting back, improves comfort；Simple and convenient, practical。

Accompanying drawing explanation

Fig. 1 is schematic diagram of the present utility model；

Fig. 2 is the chair back and gear circle schematic internal view。

Description of reference numerals: 1, chair body；2, electromotor；3, bull wheel circle；4, front coaxial circles；5, rear coaxial circles；6, it is with the cogged chair back；7, belt；8, switch。

Detailed description of the invention

In order to make the purpose of this utility model embodiment, technical scheme and advantage clearly understand, below in conjunction with embodiment and accompanying drawing, this utility model embodiment is further described in detail。At this, suitability embodiment of the present utility model and explanation are used for explaining this utility model, but are not intended as restriction of the present utility model。

As shown in Fig. 1～2, in embodiment of the present utility model, chair apparatus structure includes:

Structure includes chair body 1, electromotor 2, bull wheel circle 3, front coaxial circles 4, rear coaxial circles 5, the gear chair back 6, belt 7, switch 8；Wherein motor is while being electric wire supply unit, and motor another side connects bull wheel circle, and bull wheel is flexible crosses coaxial circles before belt connects, front coaxial circles and rear coaxial circles are belonging to coaxial circles, rear coaxial circles is with gear, and the chair back is also with gear, and the rear gear of coaxial circles is inlayed with the gear of the chair back。

In this utility model, click rising button when opening switch, electromotor forward (2) can be made to work, thus driving great circle wheel (3) to rotate；The coaxial circles (4) before belt (7) drives that is rotated through of great circle wheel (3) rotates；Simultaneously, after front coaxial circles (4) can drive, coaxial circles (5) rotates；It addition, rear coaxial circles (5) is with gear, and inlay with being with the cogged chair back (6), when rear coaxial circles (5) rotates, drive the pinion rotation being embedded on rear coaxial circles (5), so that the chair back rises；When decline key on click switch, electromotor (2) reverse operation can be made, thus driving great circle wheel (3) to rotate；The coaxial circles (4) before belt (7) drives that is rotated through of great circle wheel (3) rotates；After front coaxial circles (4) can drive, coaxial circles (5) rotates, additionally, rear coaxial circles (5) is with gear, and inlay with being with the cogged chair back (6), when rear coaxial circles (5) rotates, drive is embedded in the pinion rotation on rear coaxial circles (5), so that the chair back declines；When the chair back (6) drops to suitable degree, rear coaxial circles has groove after (5), and what the chair back declined is partially disposed in groove。

It should be pointed out that, for those skilled in the art, under the premise without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model。

Claims

1. the liftable chair of the chair back, it is characterised in that: structure includes chair body, electromotor, bull wheel circle, front coaxial circles, rear coaxial circles, is with the cogged chair back, belt, power supply；Wherein motor is while being electric wire supply unit；Another side connects bull wheel circle, and bull wheel is flexible crosses coaxial circles before belt connects, and front coaxial circles and rear coaxial circles are belonging to coaxial circles, and rear coaxial circles is with gear, and inlays with the chair back with gear。

2. a kind of liftable chair of the chair back according to claim 1, it is characterised in that having groove after rear coaxial circles, what the chair back declined is partially disposed in groove。