CN103625320A

CN103625320A - Foldable seat

Info

Publication number: CN103625320A
Application number: CN201310529103.2A
Authority: CN
Inventors: 祝德宏; 沈治; 陆伟
Original assignee: ZHANGJIAGANG LONGJING AUTO PARTS CO Ltd
Current assignee: ZHANGJIAGANG LONGJING AUTO PARTS CO Ltd
Priority date: 2013-11-01
Filing date: 2013-11-01
Publication date: 2014-03-12
Anticipated expiration: 2033-11-01
Also published as: CN103625320B

Abstract

The invention discloses a foldable seat. The foldable seat comprises a base support, a back skeleton and a cushion skeleton, wherein a cylinder is arranged between the base support and the back skeleton, an annular cover plate is fixed to the top of the cylinder, a plurality of clamping grooves are evenly formed in the top of the annular cover plate along the circumference, a movable shaft is vertically movably arranged in the cylinder and movably supported on the base support through an annular bottom plate, and the annular bottom plate is arranged on a shaft body on the lower side of the movable shaft in a sleeved mode. The back skeleton is connected with the movable shaft through a connecting shaft installed at the bottom of the back skeleton and can rotate around the movable shaft, a limit block is arranged on a shaft body of the connecting shaft and can be matched with the clamping grooves for clamping, a lifting pedal is hinged to the base support, the inner end of the lifting pedal is located under the movable shaft, the outer end of the lifting pedal is pressed downwards in an abutting-against mode so that the inner end of the lifting pedal can push up the movable shaft to move upwards together, and the connecting shaft is driven synchronously to move upwards together, so that the limit block on the shaft body of the connecting shaft breaks away from the clamping grooves. The foldable seat has the advantages of being safe to use and capable of rotating.

Description

A kind of folding seat

Technical field

The present invention relates to a kind of folding seat for special vehicles such as medical trucks.

Background technology

The structure of the current folding seat for special vehicles such as medical trucks is: comprise base support, be fixed with backrest frames on base support, backrest frames downside is hinged and is connected to cushion skeleton.The shortcoming of this folding seat is: this folding seat is when idle state, people can only be by upwards turnover of cushion skeleton, make cushion skeleton be close to backrest frames, but folding backrest frames can not be rotated to car madial wall together with cushion skeleton, greatly reduce the utilized space of the special vehicles such as medical truck.

Summary of the invention

The object of this invention is to provide a kind of rotatable a kind of folding seat.

For achieving the above object, the present invention has adopted following technical scheme: described a kind of folding seat, comprise: base support, backrest frames and cushion skeleton, between base support and backrest frames, be provided with cylinder, cylinder top is fixed with annular cover plate, at annular cover plate top, along its even circumferential, offer some draw-in grooves, in cylinder, be vertically provided with the movable axis that can move up and down in cylinder, movable axis is by being sheathed on annular bottom plate freely-movable bearing on its downside axle body on base support, backrest frames is connected with movable axis by being installed on the adapter shaft of its bottom, and can rotate around movable axis, on the axle body of adapter shaft, be provided with the limiting stopper that can coordinate with the draw-in groove of annular cover plate clamping, on base support, be also hinged with lifting pedal, the inner of lifting pedal be positioned at movable axis under, when downwards, compress the outer end of lifting pedal, can make the inner of lifting pedal head on movable axis moves up together, the Timing Belt axle that is dynamically connected moves up together, limiting stopper on adapter shaft axle body and the draw-in groove of annular cover plate are separated.

Further, aforesaid a kind of folding seat, wherein: on the movable axis axle body between annular bottom plate and annular cover plate, be arranged with reseting pressuring spring, the upper/lower terminal of reseting pressuring spring is respectively against annular cover plate and annular bottom plate, and reseting pressuring spring makes movable axis have all the time the trend moving downward; When downwards, compress the outer end of lifting pedal, can make the inner of lifting pedal head on movable axis and move up together, when reseting pressuring spring is compressed, also make limiting stopper on adapter shaft axle body and the draw-in groove of annular cover plate be separated.

Further, aforesaid a kind of folding seat, wherein: on the base support in cylinder and around reseting pressuring spring, be provided with some guide upright posts.

Enforcement by technique scheme, the invention has the beneficial effects as follows: easy to operate, use safety, and folding backrest frames and cushion skeleton can be rotated to car madial wall, and then increase the utilized space in car.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of folding seat of the present invention.

View when Fig. 2 is the folding seat rotation shown in Fig. 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

As Fig. 1, shown in Fig. 2, described a kind of folding seat, comprise: base support 1, on base support 1, be fixed with backrest frames 2, backrest frames 2 downsides are hinged and are connected to cushion skeleton 3, between base support 1 and backrest frames 2, be provided with cylinder 4, cylinder 4 tops are fixed with annular cover plate 5, at annular cover plate 5 tops, along its even circumferential, offer some draw-in grooves, at the interior movable axis 6 that can move up and down in cylinder 4 that is vertically provided with of cylinder 4, movable axis 6 is by being sheathed on annular bottom plate 7 freely-movable bearings on its downside axle body on base support 1, backrest frames 2 is connected with movable axis 6 by being installed on the adapter shaft 8 of its bottom, and can rotate around movable axis 6, on the axle body of adapter shaft 8, be provided with the limiting stopper 9 that can coordinate with the draw-in groove of annular cover plate 5 clamping, lifting pedal 10 is hinged on base support 1 by jointed shaft 11, the inner of lifting pedal 10 be positioned at movable axis 6 under, when downwards, compress the outer end of lifting pedal 10, can make the inner of lifting pedal 10 head on movable axis 6 moves up together, the Timing Belt axle 8 that is dynamically connected moves up together with backrest frames 2, limiting stopper 9 on adapter shaft 8 axle bodies is separated with the draw-in groove of annular cover plate 5, in the present embodiment, on movable axis 6 axle bodies between annular bottom plate 7 and annular cover plate 5, be arranged with reseting pressuring spring 12, reseting pressuring spring 12 upper, lower two ends are respectively against annular cover plate 5 and annular bottom plate 7, reseting pressuring spring 12 makes movable axis 6 have all the time the trend moving downward, when downwards, compress the outer end of lifting pedal 10, can make the inner of lifting pedal 10 head on movable axis 6 moves up together, when reseting pressuring spring 12 is compressed, also make the limiting stopper 9 on adapter shaft 8 axle bodies be separated with the draw-in groove of annular cover plate 5, can make like this backrest frames 2 being firmly connected with base support 1 at reseting pressuring spring 12 under down spring effect, thereby make backrest frames 2 can not produce abnormal sound because rocking in vehicle traveling process, improved stable equipment operation, in the present embodiment, on base support 1 in cylinder 4 and around reseting pressuring spring 12, be provided with some guide upright posts 13, can make like this reseting pressuring spring 12 can bending phenomenon occurs in compression and reseting procedure, further improve operation stability and the safety in utilization of equipment.

Principle of work of the present invention is as follows: seat is when being used state, cushion skeleton 3 turn to the position of sitting for people downwards, at this moment the limiting stopper 9 on adapter shaft 8 axle bodies of backrest frames 2 bottoms be just in time clamped on annular cover plate 5 on draw-in groove in, backrest frames 2 is fixed on base support 1 under down spring effect tightly self gravitation and reseting pressuring spring 12, when seat is during in idle state, can apply a downward external force to the outer end of lifting pedal 10, the inner of lifting pedal 10 is upwards rotated around jointed shaft 11, along with the continuation of lifting pedal 10 the inners is upwards rotated, the inner of lifting pedal 10 can head on movable axis 6 and move up together, movable axis 6 Timing Belts axle 8 upward movement together with backrest frames 2 that is dynamically connected, until the limiting stopper 9 on adapter shaft 8 axle bodies is separated with the draw-in groove of annular cover plate 5, in the process of movable axis 6 upward movements, can constantly compress reseting pressuring spring 12, now backrest frames 2 is just in rotatable state, then backrest frames 2 is turned to car madial wall, now the limiting stopper 9 on adapter shaft 8 axle bodies just in time along with backrest frames 2 turn to another draw-in groove on annular cover plate 5 directly over, then remove again the downward external force that is applied to lifting pedal 10 outer ends, backrest frames 2 can move downward under down spring effect at self gravitation and reseting pressuring spring 12 now, limiting stopper 9 on adapter shaft 8 axle bodies is clamped in corresponding draw-in groove, thereby backrest frames 2 and base support 1 are firmly linked together.Advantage of the present invention is: not only easy to operate, and backrest frames and base support stable connection, equipment usage safety performance is high, and folding backrest frames and cushion skeleton can be rotated to car madial wall, has greatly increased the utilized space in car.

Claims

1. a folding seat, comprise: base support, backrest frames and cushion skeleton, it is characterized in that: between base support and backrest frames, be provided with cylinder, cylinder top is fixed with annular cover plate, at annular cover plate top, along its even circumferential, offer some draw-in grooves, in cylinder, be vertically provided with the movable axis that can move up and down in cylinder, movable axis is by being sheathed on annular bottom plate freely-movable bearing on its downside axle body on base support, backrest frames is connected with movable axis by being installed on the adapter shaft of its bottom, and can rotate around movable axis, on the axle body of adapter shaft, be provided with the limiting stopper that can coordinate with the draw-in groove of annular cover plate clamping, on base support, be also hinged with lifting pedal, the inner of lifting pedal be positioned at movable axis under, when downwards, compress the outer end of lifting pedal, can make the inner of lifting pedal head on movable axis moves up together, the Timing Belt axle that is dynamically connected moves up together, limiting stopper on adapter shaft axle body and the draw-in groove of annular cover plate are separated.

2. a kind of folding seat according to claim 1, it is characterized in that: on the movable axis axle body between annular bottom plate and annular cover plate, be arranged with reseting pressuring spring, the upper/lower terminal of reseting pressuring spring is respectively against annular cover plate and annular bottom plate, and reseting pressuring spring makes movable axis have all the time the trend moving downward; When downwards, compress the outer end of lifting pedal, can make the inner of lifting pedal head on movable axis and move up together, when reseting pressuring spring is compressed, also make limiting stopper on adapter shaft axle body and the draw-in groove of annular cover plate be separated.

3. a kind of folding seat according to claim 2, is characterized in that: on the base support in cylinder and around reseting pressuring spring, be provided with some guide upright posts.