CN201612365U - Pull-pin type overturning seat - Google Patents

Abstract

The utility model relates to folding seats, in particular to an overturning seat with locking devices, which resolves the safety problem that no folding seat is arranged in the prior art and comprises a frame equipped with two rear legs, and a seat cushion fixed on the frame. The overturning seat is characterized in that two sides of the frame are a four-bar mechanism. The four-bar mechanism comprises the rear legs, short connecting bars, armrests and inclined legs, one end of each short connecting bar is hinged with one armrest, the other end of the short connecting bar is fixed on one rear leg via a hinged rotary sleeve, an X-shaped inclined support bar is hinged between the rear legs, an X-shaped inclined support bar is hinged between the inclined legs, and a lateral inclined bar is respectively hinged between the lower end of the inclined support bar between the inclined legs and the upper end of the rear leg on the same side. The locking devices are arranged at the rear ends of the armrests. The frame forms a closed frame structure via the four connecting bars and the cross inclined support bars and can be folded, and simultaneously the locking devices at the tails of the armrests can lock the rear legs and fix unfolding state of the frame.

Description

Draw pin formula tip-up set

Technical field

The utility model relates to a kind of rumble seat, especially a kind of tip-up set with locking device.

Background technology

At present, folding seat is because its folding back occupation space is smaller, and be convenient to carrying, therefore be subjected to favoring widely, but folding seat commonly used mostly is a rotary folding, folding back is owing to the reason of rigidity, can not fold and put in place, therefore final volume does not also reach minimum, perhaps for the folding minimum volume that narrows down to, and do not interfere and handrail is cast out, reduced the comfortableness of using.Present folding seat does not have locking device, has the problem of security in the time of use.

Such as Patent Office of the People's Republic of China on December 15th, 2005, announced a CN2732079Y patent, name is called a kind of folding seat, form by connectors such as seat support, foreleg, back leg, rivets, the both sides, middle part of seat support link to each other with first pivot that is riveted on foreleg, the postmedian both sides of seat support link to each other with second pivot that is riveted on back leg by the activity bar body of riveted joint, and the end of seat support is established a positive stop, and has a locked body that matches with positive stop at the nearly back leg end of activity bar body.But this folding seat is when strutting use, and locked body is in the position at similar dead point, when needing to fold, make locked body leave the position at dead point earlier, and it is not very convenient therefore using.

Summary of the invention

The utility model has solved folding seat in the prior art does not have folding seat to have the problem of security, provide a kind of have a locking device draw pin formula tip-up set

The utility model has also solved in the prior art and to have used locked body to have the dead point, uses shortcoming not too easily, and a kind of dead point that do not exist is provided, the folding pin formula tip-up set that draws very easy to use

The technical scheme that its technical problem that solves the utility model adopts is: a kind of pin formula tip-up set that draws, comprise chair frame with two back legs and the seat cushion that is fixed on the chair frame, the both sides that it is characterized in that the chair frame are quadric chain, quadric chain comprises back leg, short connecting rod, handrail and oblique chair leg, short connecting rod one end and handrail are hinged, the short connecting rod other end is fixed on the back leg by hinged rotary sleeve, be hinged with the hound that is X-shaped between the back leg, tiltedly be hinged with the hound that is X-shaped between the chair leg, tiltedly the lower end of the hound between the chair leg and the upper end of the same side back leg are hinged with the skew back bar, and the rear end of handrail is provided with locking device.Quadric chain can make the chair frame fold up, back leg and oblique chair leg are as the parts that support, hound supports back leg and oblique chair leg, make the chair frame be an overall structure, the locking device of armrest rear end can be locked with back leg, in the time of the expansion of chair frame, locking device works and fixes whole chair frame, prevents to move gathering or curved automatically when rocking tip-up set; Tiltedly hound between the chair leg and skew back bar have been formed the preceding chair leg support of chair frame; The quadric chain of chair frame both sides and hound form the chair shelf structure of a sealing, make that chair frame overall structure is more stable, just can improve security in conjunction with locking device.

As preferably, be equipped with displacement disc on the back leg, tiltedly be fixed with fixed disk on the chair leg, the upper end of the hound between the back leg is hinged on the displacement disc, and tiltedly the hound between the chair leg is hinged on the fixed disk.When back leg draws in, back leg supports between the hound and rotates, the position of the pin joint of the upper end of hound changes, therefore displacement disc is set on back leg, in the hound rotation, can change distance, can not interfere, can play a supporting role again simultaneously, tiltedly there is not direct fulcrum on the chair leg as chair leg before the chair frame, be lower extreme point by hound between the oblique chair leg as the chair frame before the fulcrum of chair leg, therefore can change the position of hound lower extreme point, can not interfere, therefore adopt the hinged hound of fixed disk with oblique chair leg.

As preferably, the lower end of the oblique chair leg of the same side and the lower end of back leg are hinged, and tiltedly chair leg upper end is provided with bending, and fixed disk is fixed on bending part, and tiltedly hound between the chair leg and the hound between the back leg are parallel to each other.Tiltedly the upper end of chair leg is hinged with handrail, and therefore the upper end with oblique chair leg is provided with bending, tiltedly the hinged handrail in end of chair leg, the overall volume that can shorten handrail or dwindle the chair frame like this.

As preferably, rotary sleeve comprises a sleeve pipe and a rotary head, boss and groove for cooperatively interacting between sleeve pipe and the rotary head, sleeve pipe is provided with and the perpendicular through hole of the axis of boss, rotary head is provided with the axial perpendicular through hole with groove, back leg is inserted in the through hole of sleeve pipe, and short connecting rod is inserted in the through hole of rotary head, fixes with screw rod and nut between rotary sleeve and back leg and the short connecting rod.Match by boss and groove between sleeve pipe and the rotary head, can also rotate mutually simultaneously, therefore can realize the mutual rotation between short connecting rod and the back leg, and connect by rotary sleeve, make short connecting rod and back leg can not be in same plane, can not interfere in the time of rotation.

As preferably, locking device comprises the card division that is hinged on armrest rear end, the card division is provided with an arc bayonet socket, the axis of arc bayonet socket and the rotation of card division are perpendicular, the outer wall of arc bayonet socket is provided with the through hole that runs through this outer wall, is provided with bearing pin, spring and snap-fastener in the through hole, is inserted with catch in the sidewall of through hole, the corresponding position of back leg is provided with circular hole, and circular hole and bearing pin match.Arc bayonet socket and back leg match, and bearing pin is inserted under the active force of spring in the circular hole of back leg and finishes locking action, pulls out bearing pin, the rotation card division, and back leg just breaks away from bayonet socket, just can fold.

As preferably, seat cushion is provided with four holes, and four holes are enclosed within back leg respectively and tiltedly on the chair leg, seat cushion also is provided with sleeve, and sleeve is enclosed within the top of back leg.Back leg and oblique chair leg launch seat cushion by the hole on the seat cushion, and back leg is lived seat support by sleeve again.

The beneficial effects of the utility model are: the chair frame forms the frame structure of a sealing by the hound of four connecting rods and intersection, and can fold gathering, and the locking device of handrail tail end can be locked back leg simultaneously, fixes the state that the chair frame launches.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is a kind of foldable structure schematic diagram of the utility model;

Fig. 3 is the exploded perspective view of a kind of locking device of the utility model;

Among the figure: 1, handrail, 2, fixed cover, 3, front chair leg, 4, oblique chair leg, 5, back chair pin, 6, back leg, 7, hound, 8, rotary sleeve, 9, move cover, 10, seat cushion, 11, rotary head, 12, boss, 13, sleeve pipe, 14, through hole, 15, spring, 16, snap-fastener, 17, bearing pin, 18, catch, 19, the card division, 20, arc bayonet socket, 21, short connecting rod, 22, side brace.

The specific embodiment

Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: a kind of pin formula tip-up set (referring to accompanying drawing 1) that draws, comprise chair frame with two back legs 6 and the seat cushion 10 that is fixed on the chair frame, the chair frame is to form by pipe is hinged, the upper end of two back legs 6 recedes, fixing back, the lower end of back leg 6 chair pin 5, the upper end of two back legs is equipped with moves cover 9, moving cover 9 can move axially in the back leg upper edge, be hinged with two hounds 7 that are the X-shaped cross-articulation between the back leg 6, the lower end of hound 7 is hinged on the back chair pin 5, the upper end of hound 7 is hinged to move and puts, the lower position that moves cover on the back leg 6 is fixed with rotary sleeve 8, also be fixed with short connecting rod 21 on the rotary sleeve 8, the other end of short connecting rod 21 is hinged to the tail end of handrail 1, the upper end of the hinged oblique chair leg 4 of the front end of handrail, tiltedly the lower end of chair leg 4 is hinged on the back chair pin 5 of back leg 6 lower ends of the same side, back leg 6, short connecting rod 21, handrail 1 and oblique chair leg 4 have been formed quadric chain, tiltedly chair leg 4 upper ends are provided with bending, the bending part is fixed with fixed cover 2, fixed cover 2 is hinged with hound, hound between the two oblique chair legs 4 intersects mutually and is X-shaped, and it is hinged at infall, tiltedly hound between the chair leg 4 and the hound between the back leg 6 are parallel to each other, tiltedly the lower end of the hound between the chair leg 4 is hinged with front chair leg 3, front chair leg 3 also is hinged with side brace 22, the upper end of side brace 22 is hinged on the mobile cover 9 on the back leg of the same side, the middle part of side brace 22 is hinged with oblique chair leg 4, rotary sleeve 8 comprises a sleeve pipe 13 and a rotary head 11, boss 12 and groove for cooperatively interacting between sleeve pipe 13 and the rotary head 11, sleeve pipe 13 is provided with the through hole 14 perpendicular with the axis of boss 12, rotary head 11 is provided with the axial perpendicular through hole with groove, back leg 6 is inserted in the through hole 14 of sleeve pipe 13, short connecting rod 21 is inserted in the through hole of rotary head 11, fix with screw rod and nut between rotary sleeve 8 and back leg 6 and the short connecting rod 21, the tail end side of handrail 1 is hinged with locking device (referring to accompanying drawing 3), locking device comprises the card division 19 that is hinged on armrest rear end, card division 19 is provided with an arc bayonet socket 20, the rotation of the axis of arc bayonet socket 20 and card division 19 is perpendicular, the outer wall of arc bayonet socket 20 is provided with the passage that runs through this outer wall, be provided with bearing pin 17 in the passage, spring 15 and snap-fastener 16, be inserted with catch 18 in the sidewall of passage, the corresponding position of back leg 6 is provided with circular hole, circular hole and bearing pin 17 match, seat cushion 10 is provided with four holes, four holes are enclosed within respectively on back leg 6 and the oblique chair leg 4, seat cushion 10 also is provided with sleeve, and sleeve is enclosed within the top of back leg 6.

When the chair frame strutted, chair pin 5 was in same plane behind two front chair legs 3 and two, and back leg 6 snaps onto arc bayonet socket 20 and realizes locking in the bearing pin 17 circular hole place that is inserted into back leg 6 under the effect of spring 15 simultaneously simultaneously, and this moment, the chair frame was with seat cushion 10 tensionings.

When unclamping, hold snap-fastener 16, compression spring 15 is extracted circular hole on the back leg 6 with bearing pin 17, to move cover 9 then moves toward the upper end of back leg 6, handrail 1 is overturn backward, short connecting rod 21 is done 180 degree rotations, draws side brace 22 and hound 7 simultaneously in, finally realizes the foldable integral (referring to accompanying drawing 2) of seat.

Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.

Claims (6)

1. one kind is drawn pin formula tip-up set, comprise chair frame with two back legs and the seat cushion that is fixed on the chair frame, the both sides that it is characterized in that the chair frame are quadric chain, quadric chain comprises back leg, short connecting rod, handrail and oblique chair leg, short connecting rod one end and handrail are hinged, the short connecting rod other end is fixed on the back leg by hinged rotary sleeve, be hinged with the hound that is X-shaped between the back leg, tiltedly be hinged with the hound that is X-shaped between the chair leg, tiltedly the lower end of the hound between the chair leg and the upper end of the same side back leg are hinged with the skew back bar, and the rear end of handrail is provided with locking device.

2. the pin formula tip-up set that draws according to claim 1, it is characterized in that being equipped with on the back leg displacement disc, tiltedly be fixed with fixed disk on the chair leg, the upper end of the hound between the back leg is hinged on the displacement disc, and tiltedly the hound between the chair leg is hinged on the fixed disk.

3. the pin formula tip-up set that draws according to claim 1 and 2, it is characterized in that the lower end of oblique chair leg of the same side and the lower end of back leg are hinged, tiltedly chair leg upper end is provided with bending, fixed disk is fixed on bending part, and tiltedly hound between the chair leg and the hound between the back leg are parallel to each other.

4. the pin formula tip-up set that draws according to claim 1, it is characterized in that rotary sleeve comprises a sleeve pipe and a rotary head, boss and groove for cooperatively interacting between sleeve pipe and the rotary head, sleeve pipe is provided with and the perpendicular through hole of the axis of boss, rotary head is provided with the axial perpendicular through hole with groove, back leg is inserted in the through hole of sleeve pipe, and short connecting rod is inserted in the through hole of rotary head, fixes with screw rod and nut between rotary sleeve and back leg and the short connecting rod.

5. the pin formula tip-up set that draws according to claim 1, it is characterized in that locking device comprises the card division that is hinged on armrest rear end, the card division is provided with an arc bayonet socket, the axis of arc bayonet socket and the rotation of card division are perpendicular, the outer wall of arc bayonet socket is provided with the through hole that runs through this outer wall, is provided with bearing pin, spring and snap-fastener in the through hole, is inserted with catch in the sidewall of through hole, the corresponding position of back leg is provided with circular hole, and circular hole and bearing pin match.

6. according to claim 1 or 2 or the 4 or 5 described pin formula tip-up sets that draw, it is characterized in that seat cushion is provided with four holes, four holes are enclosed within respectively on back leg and the oblique chair leg, and seat cushion also is provided with sleeve, and sleeve is enclosed within the top of back leg.

Images