CN201230734Y

CN201230734Y - Follow back

Info

Publication number: CN201230734Y
Application number: CN 200820014464
Authority: CN
Inventors: 岳德华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-25
Filing date: 2008-07-25
Publication date: 2009-05-06
Anticipated expiration: 2018-07-25

Abstract

The utility model discloses a following backrest which belongs to a backrest chair accessory. The following backrest comprises a backrest supported by a bracket and is characterized in that the middle lower part of the bracket is connected with one side of a chair seat by a rotating shaft, the rear end of a hydraulic device which is positioned under the chair seat is connected with the lower part of the bracket, a hydraulic rod which is arranged on the front end of the hydraulic device is fixed on the chair seat by a connecting plate, and a hand rod which is used for controlling a switch of the hydraulic device is connected under the chair seat. When the following backrest is used, the switch of the hydraulic device is controlled by the hand rod, and the hydraulic rod is extended to drive the upper part of the bracket and drive the backrest to incline forwards. When a human body inclines forwards to separate the backrest, the following backrest only needs to be regulated to a proper position and can effectively support the human body, a following function is realized, the correct setting posture is ensured, and the vertical spondyle is ensured to avoid lumbar diseases, cervical vertebra diseases and myopia.

Description

A kind of backrest of following

One, technical field

The utility model belongs to the chair accessory, is specifically related to a kind of backrest of following.

Two, background technology

Present chair mostly is made of seat support, backrest, leg and handrail, with its convenient, comfortable, elegant in appearance advantage, is extensive use of in school, office and family.Along with development of technology, chair miscellaneous constantly occurs.In order to satisfy partly the lie requirement of respite of people, the chair that a kind of backrest can suitably move has backward appearred for example.Though chair more and more is subjected to people's favor, just can play a supporting role when only leaning in the back owing to backrest, when literal work was engaged in people's bench over, backrest can't support health formation, and vertebra can be bent downwardly under the effect of gravity.In the course of time can cause the generation of cervical vertebra and lumbar disc disease, influence health.Be in the teenager of growth and development stage for health, influence more serious.Also can cause the generation of myopia simultaneously.

Three, summary of the invention

The purpose of this utility model provides a kind of chair accessory---and follow backrest, use the chair that is equipped with this backrest, also can obtain the support of backrest during people's bench over, vertebra is kept upright, avoid the generation of waist, cervical spondylosis and myopia.

For achieving the above object, the technical solution adopted in the utility model is: comprise by the backrest of stent support, be characterized in: the middle and lower part of support is connected by rotating shaft with seat support one side; The rear end that is positioned at the hydraulic press below the seat support is connected with the bottom of support, and the hydraulic stem of hydraulic press front end is fixed on the seat support by connecting plate; The hand lever of control hydraulic press switch is movably connected in below the seat support.

When the utility model uses,, just can make the hydraulic stem elongation promote support top drive backrest and lean forward by hand lever control hydraulic press switch.When people's bench over breaks away from backrest, only need the utility model is adjusted to the appropriate location, just can form effective support to human body, realized following function, guarantee that sitting posture is proper, keep vertebra upright, avoided the generation of waist, cervical spondylosis and myopia.

Four, description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the upward view of Fig. 1.

Five, the specific embodiment

As shown in the figure, the utility model comprises the backrest 1 that is supported by support 2, and backrest 1 can be fixed on the support 2 by axle.Support 2 can be made into the stretching structure by locator 18 location; The inboard of chair seat support 3 is connected by the middle and lower part of rotating shaft 8 with support 2, and support 2 is divided into upper and lower two parts; The rear end that is installed in the hydraulic press below the seat support 3 is fixed on the dovetail fork 15, and dovetail fork 15 is connected with the axle sleeve 10 that is fixed on support 2 bottoms by rotating shaft 12, and hydraulic press just is connected the bottom of support 2 like this; The hydraulic stem 5 of hydraulic press front end is fixed on the connecting plate 20, the upper end of connecting plate 20 be fixed on seat support 3 below.Hand lever 16 is connected on the support 6 by rotating shaft 14, and hand lever 16 can 14 be swung around the shaft.The upper end of support 6 be fixed on bottom surface 3 below.The front end of hand lever 16 be installed in hydraulic stem 5 on hydraulic press switch 7 positions on mutually corresponding, the part that seat support 3 is stretched out in the rear end is equipped with handle 17; The upper end is installed at the middle part of hydraulic sleeve 4 is fixed on carriage 9 on the bottom surface 3, between carriage 9 and the spring fastenings 11 that is fixed on bottom the hydraulic press back-moving spring 13 is installed.This back-moving spring 13 is fixed on carriage 9 and the spring fastenings 11 by connecting rod 19.

The course of work of the present utility model is as follows: when people's bench over, when needing to adjust backrest 1 position, move handle 17, make hand lever 16 touch hydraulic press switch 7, hydraulic press hydraulic stem 5 moves after protracting and making hydraulic sleeve 4, promotes to move behind the bottom of support 2, makes top 8 reaches around the shaft of support 2 drive backrests 1 and leans forward, after arriving the appropriate location, release handle 17 gets final product.During return, only need move backward by promoting backrest 1 back, bottom promotion hydraulic sleeve 4 reaches that drive support 2 reset and get final product.The effect of back-moving spring 13 is that auxiliary hydraulic pressure cover 4 resets.

The utility model is simple in structure, reasonable in design, has wide range of applications, not only can be existing Use on the chair that has, but also can use at driver's seat, body-building seat. The utility model Use except can be used as backrest, can also use as the secondary backrest of chair. Namely original Secondary backrest of increase can reach outside the above-mentioned functions equally on the basis of backrest, also has to make With advantages such as flexible, conservations, and repacking easily.

Claims

1, a kind of backrest of following comprises the backrest (1) that is supported by support (2), and it is characterized in that: the middle and lower part of support (2) is connected by rotating shaft (8) with seat support (3) one sides; The rear end that is positioned at the following hydraulic press of seat support (3) is connected with the bottom of support (2), and the hydraulic stem of hydraulic press front end (5) is fixed on the seat support (3) by connecting plate (20); The hand lever (16) of control hydraulic press switch (7) is movably connected in below the seat support (3).

2, a kind of backrest of following according to claim 1 is characterized in that: support (2) is the stretching structure by locator (18) location.

3, a kind of backrest of following according to claim 1 and 2, it is characterized in that: the upper end is installed at the middle part of hydraulic press axle sleeve (4) is fixed on carriage (9) on the bottom surface (3), between carriage (9) and the spring fastenings (11) that is fixed on bottom the hydraulic press back-moving spring (13) is installed.