CN2778091Y

CN2778091Y - Tip-up seat

Info

Publication number: CN2778091Y
Application number: CN 200520100854
Authority: CN
Inventors: 胡听涛
Original assignee: SHENGE CHAIR IND CO Ltd NINGBO
Current assignee: SHENGE CHAIR IND CO Ltd NINGBO
Priority date: 2005-03-09
Filing date: 2005-03-09
Publication date: 2006-05-10
Anticipated expiration: 2015-03-09

Abstract

The utility model relates to a tip-up seat which at least comprises a chair body. A column in the chair body is hinged with a frame. One end of a bent connecting rod is hinged with the column, and the other end of the bent connecting rod is hinged with a crank. The other end of the crank is connected with a power shaft which is installed in the frame. The utility model is characterized in that one end of an arm rest of the chair body is hinged with the upper part of the column, and the other end of the arm rest is hinged with the upper part of a dorsal column. The lower part of the dorsal column is hinged with the frame. The utility model has the advantages of reasonable structural design, uniform stress and convenient use in practice.

Description

Tipping-up chair

Technical field

The utility model relates to and a kind ofly can fall when idle, can dig tipping-up chair when using.

Background technology

Folding tipping-up chair is mainly used in the gymnasium, the conference hall, on the movable stand that stage etc. use, in order to save the space, movable stand need be folded up tipping-up chair when idle and fall, and when using, movable stand launches, again chair is dug, and carry out lock-bit, so waste time and energy, the someone develops the tipping-up chair of new construction for this reason, it as the patent No. 98247270.6 Chinese patent " a kind of Electric turnover chair of automatic lock-bit ", its chair pin is fixed on the base and can rotates around its D place, bottom, bent connecting rod one end of one bending and chair pin are articulated in the A place, the other end and rotating plate are articulated in the C place, the other end B of rotating plate is then rotated by motor-driven, the Via connecting rod drives the rotation of chair pin digs chair, when chair dig put in place after, described bent connecting rod, rotating plate is spacing, this moment, described C crossed the extended line of described A B line, it can make falling of tipping-up chair, dig all and finish automatically, and it is dig back lock-bit automatically at chair, saved greatly manually, and simple for structure, convenient to use, the place of its blemish in an otherwise perfect thing is that the whole basically load-bearing of the weight of chair body are on the shaped steel of the heaviness of chair pin, and the seat form also is restricted, and simultaneously, makes the bedframe of tipping-up chair stressed on the whole balanced inadequately, and in the chair folding process, the chair body can not be out of shape, and overall volume is bigger than normal, and is highly higher, take up space more, be unfavorable for actual use; In folding process, line shaft does not have dynamic balance mechanism to help.So stressed very big, cause motor must adopt the motor of big moment to drive, influence manufacturing cost, also shorten the service life of motor.

Summary of the invention

Technical problem to be solved in the utility model is to provide the tipping-up chair that a kind of structural design is reasonable more, stressed balanced more, the convenient reality of chair is used at existing background technology.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of tipping-up chair, it includes the chair body at least, column bottom and framework in the chair body are hinged, bent connecting rod one end and column middle and lower part are carried out hinged, the other end and crank carry out hinged, and the other end of crank links together with the line shaft that is installed in the framework, the top that it is characterized in that its arm-rest frame one end of described chair body and column is carried out hinged, the top of the other end and dorsal column is carried out hinged, and the bottom of dorsal column and framework carry out hinged.

Useful is, its medium position of described column is connected with extension spring, extension spring is connected with the fixed position of framework after walking around the hinged place of dorsal column bottom, the weight that it adopts extension spring to come the balance seat, make chair in the process of translating into or getting up, make line shaft be subjected to torque ratio less, can adopt small size motor or less manpower strength to drive, also further prolong its service life.

Useful is, be provided with the directive wheel of extension spring between the hinged place of described dorsal column bottom and the fixed position of framework, also be provided with the directive wheel of extension spring in the hinged place of described dorsal column bottom, can reduce the frictional force of extension spring like this, make the chair upset or get up easily sensitive more.

At last, described line shaft and motor or man-operated mechanism are to drive and are connected.

Compared with prior art, advantage of the present utility model is: owing to adopt double-four link mechanism, make the reasonable more science of structure of chair, need not to adopt shaped steel to do the chair pin, reduced the weight of chair, promptly increased the version of seat, also make chair frame stressed on the whole balanced more, and in the chair folding process, chair is known from experience suitably distortion, does the self adaptation adjustment, overall volume is littler, highly also shorter, reduce institute and take up space, be beneficial to actual use.

Description of drawings

Fig. 1 is a tipping-up chair overall schematic of the present utility model;

Fig. 2 is a tipping-up chair side schematic view of the present utility model (erecting state);

Fig. 3 is a tipping-up chair side schematic view of the present utility model (roll-over condition);

Fig. 4 is a tipping-up chair skeleton side schematic view of the present utility model (erecting state);

Fig. 5 is a tipping-up chair skeleton side schematic view of the present utility model (roll-over condition).

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As Fig. 1-5 signal, one this tipping-up chair, it includes the chair body at least, the skeleton of tipping-up chair adopts double-four link mechanism, say exactly, column 1 bottom and framework 4 in the chair body are hinged, bent connecting rod 5 one ends and position, column 1 middle and lower part are carried out hinged, the other end and crank 6 carry out hinged, and the other end of crank 6 links together with the line shaft 7 that is installed in the framework, formed can realize the tipping-up chair overturning or erect, the automatic quadric chain of lock-bit, its operation principle is similarly with traditional technology, has just no longer described in detail here.Crucial part of the present utility model is that the top of arm-rest frame 2 one ends and column 1 carries out hingedly, and the top of the other end and dorsal column 3 is carried out hinged, and the bottom of dorsal column 3 and framework 4 carry out hinged, have formed a quadric chain again.Further improve, column 1 medium position is connected with extension spring 8, the hinged place that the dorsal column bottom is walked around in extension spring 8 respectively is connected with the fixed position of framework with directive wheel 9 backs in the framework, is beneficial to guiding in order to reduce friction, and the hinged place of dorsal column 3 bottoms also is provided with the directive wheel 10 of extension spring.Being installed in line shaft 7 and motor or man-operated mechanism in the framework is to drive and is connected.On the skeleton of tipping-up chair, install seat cushion again and back cushion has just been made complete tipping-up chair.

Its operation principle process is such, when wanting tipping-up chair to erect, 7 of the power that motor or people's force mechanisms drive in the framework clockwise rotate, make crank 6 also the moving mechanical axis clockwise rotate, by bent connecting rod 5 pullings, thereby drive column 1 upwards turns over and erects, in the following retrousse while of quadric chain, also drive quadric chain by column 1 and constantly upwards turn over, and do accommodation, last column 1 erects fully, at this moment, bent connecting rod 5 forwards the dead-centre position to, locks quadric chain, has kept the stable of tipping-up chair; When wanting the overturning chair, the line shaft 7 that motor or people's force mechanisms drive in the framework rotates counterclockwise, make crank 6 also the moving mechanical axis rotate counterclockwise, bent connecting rod 5 is rotated counterclockwise, removed the dead point, thereby promoting column 1 counterclockwise overturning downwards comes, when quadric chain turns over downwards down, also drive quadric chain by column 1 constantly to turn over downwards, and do accommodation, last column 1 overturning falls down to the ground tipping-up chair on the ground fully.The effect of balancing gravity is played in whole process extension spring 8, alleviates the load of motor or manpower, makes the tipping-up chair easy and flexible more that works together.

Claims

1, a kind of tipping-up chair, it includes the chair body at least, column bottom and framework in the chair body are hinged, bent connecting rod one end and column middle and lower part are carried out hinged, the other end and crank carry out hinged, and the other end of crank links together with the line shaft that is installed in the framework, it is characterized in that the top of its arm-rest frame one end of described chair body and column is carried out hinged, the top of the other end and dorsal column is carried out hinged, and the bottom of dorsal column and framework carry out hinged.

2, tipping-up chair according to claim 1 is characterized in that its medium position of described column is connected with extension spring, and extension spring is connected with the fixed position of framework after walking around the hinged place of dorsal column bottom.

3, tipping-up chair according to claim 2 is characterized in that being provided with between the fixed position of the hinged place of described dorsal column bottom and framework the directive wheel of extension spring.

4, tipping-up chair according to claim 3 is characterized in that the hinged place of described dorsal column bottom is provided with the directive wheel of extension spring.

5, tipping-up chair according to claim 4 is characterized in that described line shaft and motor or man-operated mechanism are driving and are connected.