Background technology
Take needs in order to satisfy, a plurality of passenger seats generally are set in the existing car body, but under some special situation, as with the occupant who takes advantage of less need cargo-carring goods more often since seat occupancy that can't folding and unfolding most vehicle body space reduce the ability of its lade, poor practicability can't satisfy people's operating needs.
Chinese patent discloses a kind of Collapsible seat (CN2714365Y) that is used for automobile, it comprises and is movably connected and is fixedly mounted on seat, backrest on the vehicle body, comprise that also one is installed in the driving lever on the described seat cushion, described driving lever and described backrest are by fixedly pivot point flexible connection, one is installed in the follow up lever of described seat cushion below, flexibly connects a tie-strut with described driving lever, one end is connected with attachment point on the vehicle body, and the other end and described follow up lever flexibly connect.Though this armchair structure can carry out folding and retraction according to the needs of lade, to reach the purpose that enlarges storage space, but this apparatus structure complexity, and can only be in perpendicular folding and retraction, promptly the storage space of the Kuo Daing seat that is folded folding and unfolding is separated into several little storage spaces, therefore can only load scattered small size goods, the making full use of of unfavorable storage space.
Summary of the invention
The present invention has mainly provided a kind of simple in structure, satisfy take demand in, thereby collapsible sinking armchair structure that can the maximized expansion car body of horizontal folding and unfolding storage space has solved the technical matters that storage space after the apparatus structure complexity that exists in the prior art, the folding and unfolding is little, can't make full use of storage space etc.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: collapsible sinking armchair structure, comprise seat cushion and on cushion the backrest of being rotationally connected, feet and back feet before the bilateral symmetry of described seat cushion is provided with, an end of feet and base plate flexibly connect before described, the other end of described preceding feet is rotatably connected to pull bar and is rotationally connected by pull bar and backrest, one end and the base plate of described back feet flexibly connect, and the other end of described back feet is rotatably connected to rocking arm and is rotationally connected by rocking arm and backrest.By bilateral symmetry the back and front supporting pin is set, can supports seat cushion, promptly play the effect of seat leg by the back and front supporting pin at seat cushion; When the lower end of back and front supporting pin and base plate flexibly connect, the convenient installation, and can improve the degree of utilization of vehicle body space by removing or loosening the back and front supporting pin and horizontal further expands the car body storage space on base plate where necessary; By be rotationally connected pull bar and be rotationally connected of the upper end at preceding feet by pull bar and backrest, again by be rotationally connected rocking arm and be rotationally connected of the upper end at the back feet by rocking arm and backrest, the relative seat cushion of backrest can be opened or stack freely, the relative seat cushion of backrest is used for satisfying the demand of taking when opening, the relative seat cushion of backrest is used for lade when stacking, when the storage space of needs hour, the level of backrest and seat cushion stacks, be partially foldedly just can satisfy operating needs, when the storage space of needs is big, before dismountable, horizontal positioned behind the back feet, promptly stack fully, with maximized expansion car body storage space, simple in structure, occupation mode is flexible and changeable.
Backrest can be directly hinged by bearing pin and seat cushion, as preferably, between described seat cushion both sides and backrest, be arranged with the triangle yoke plate, an angled end in the described triangle yoke plate is downward, two angled end in addition are rotationally connected with seat cushion and backrest respectively, backrest its lower edge when erectility is connected to the rearward end of seat cushion, its stacks parallel with seat cushion during the backrest on even keel.By the triangle yoke plate is set, make things convenient for the two connection and installation between seat cushion and backrest; The triangle yoke plate not only can strengthen Joint strenght, and an one angled end is downward, makes the backrest end and the being kept perfectly property of seat cushion end of superposed state, increases aesthetic feeling; The lower edge is connected to the rearward end of seat cushion during the backrest erectility, can to reduce pull bar under the state stressed taking, improve the intensity of seat.
As preferably, described pull bar is symmetrically set in the backrest both sides, and described backrest is when erectility, and described pull bar is positioned at the top of rocking arm.By bilateral symmetry pull bar is set, guarantees backrest and seat cushion held stationary, improve the traveling comfort that uses at backrest; Backrest the erectility lower link be positioned at rocking arm above the time, make things convenient for the backrest folding and unfolding, be beneficial to the position balance of keeping between backrest and seat cushion simultaneously, improve stability in use.
As more preferably, be provided with connecting rod between corresponding to pull bar and rocking arm on the described backrest, the two ends of described connecting rod are connected on the backrest with pull bar and rocking arm coaxial rotation respectively.By between pull bar and rocking arm, connecting rod being set, can improve the Joint strenght of pull bar, rocking arm and backrest.
As preferably, before described feet and afterwards feet turn to when parallel with base plate, described backrest is parallelizable to be stacked on the seat cushion.Fully during the folding and unfolding seat, the backrest horizontal can be saved the car body usage space on cushion, improves the ability of car body storing goods.
As preferably, between described seat cushion and backrest, be provided with locking structure, described locking structure comprises drag-line, seat lock, disc spring, snap close and trace, one end of described drag-line is fixed on the backrest by positioning plate, the other end is hooked on the seat lock, described seat lock is slidingly connected on the trace by snap close, one end of described trace is rotatably connected on the axle outside that is rotationally connected between back feet and rocking arm, the middle part of feet before the other end of described trace is fixed on, described disc spring be sleeved on back feet and rocking arm between be rotationally connected on the axle.By between seat cushion and backrest, locking structure being set, can handle the folding and unfolding of backrest by locking structure, and can lock the seat state by locking structure, improve the reliability that uses.
Therefore, collapsible sinking armchair structure of the present invention has following advantage: by the bilateral symmetry at seat cushion the back and front supporting pin is set and supports seat cushion, and the lower end of back and front supporting pin is vertical with base plate flexibly connects, the convenient installation and folding and unfolding; Be rotationally connected by pull bar and rocking arm and backrest, the relative seat cushion of backrest can be opened or stack freely, satisfy the operating needs under the different conditions, simple in structure, occupation mode is flexible and changeable, improves the degree of utilization of vehicle body space; By the triangle yoke plate is set, the convenient connection and installation, can increase Joint strenght again between seat cushion and backrest; By between seat cushion and backrest, locking structure being set, can lock the seat state by locking structure, improve the reliability that uses.
The specific embodiment:
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Embodiment:
As shown in Figure 2, collapsible sinking armchair structure of the present invention, comprise that seat cushion 1 reaches the triangle yoke plate 6 that is rotatably connected on seat cushion 1 both sides by the bearing pin of symmetry, triangle yoke plate 6 is a right-angled triangle iron plate, and the right angle end of triangle yoke plate 6 is downward, two angled end in addition are rotationally connected by bearing pin and seat cushion 1 and backrest 2 respectively, when backrest 2 when uprightly taking state, the lower edge of backrest 2 is connected to the rearward end of seat cushion 1, the parallel top that overlays seat cushion 1 during backrest 2 on even keels, feet 3 and back feet 4 before the bilateral symmetry of seat cushion 1 is equipped with, before be connected by the bolt vertical fixing between lower end and the base plate of feet 3, the upper end of preceding feet 3 is rotationally connected by an end of bearing pin and pull bar 7, the other end of pull bar 7 upwards and the both sides, bottom by bearing pin and backrest 2 be rotationally connected, be connected by the bolt vertical fixing between the lower end of back feet 4 and base plate, the upper end of back feet 4 is rotationally connected by an end of bearing pin and Rocker arm 5; the other end of Rocker arm 5 upwards and the both sides, bottom by bearing pin and backrest 2 be rotationally connected; and backrest 2 pull bar 7 when erectility be positioned at Rocker arm 5 above; being rotationally connected of be rotationally connected bearing pin and Rocker arm 5 corresponding to pull bar 7 on backrest 2 is equipped with connecting rod 8 between the bearing pin, the two ends of connecting rod 8 and pull bar 7 and Rocker arm 5 coaxial rotation are connected on the backrest 2.As shown in Figure 1, between seat cushion 1 and backrest 2, locking structure 9 is housed, locking structure 9 comprises drag-line 91, seat lock 92, disc spring 93, snap close 94 and trace 95, one end of drag-line 91 upwards and by positioning plate is fixed on backrest 2 tops, the other end is hooked on the seat lock 92, seat lock 92 is slidingly connected in the long chute on the trace 95 by snap close 94 again, the axle outside that is rotationally connected after one end of trace 95 is rotatably connected on by bearing pin between feet 4 and Rocker arm 5, the outside at feet 3 middle parts before the other end of trace 95 is fixed on, on the axle that is rotationally connected after disc spring 93 is sleeved between feet 4 and Rocker arm 5, one end of disc spring 93 is hooked on the trace 95, and the other end is hooked on the feet 4 of back.
When the occupant took, as illustrated in fig. 1 and 2, backrest 2 upwards was expanded to the state of taking, and the lower edge of backrest 2 is connected to the rearward end of seat cushion 1, and by locking structure 9 locked seat; When loading a small amount of goods as need, as shown in figures 1 and 3, pulling earlier is positioned at drag-line 91 1 ends of backrest 2 tops, behind release seat lock 92 and the snap close 94, and backrest 2 overturning forward, backrest 2 downward parallel overlaying on the seat cushion 1 get final product; When loading lot cargo, as shown in Figure 1 and Figure 4, slightly screw out the bolt of preceding feet 3 and feet 4 lower ends, back, fell forward after rotating by preceding feet 3 by trace 95, reach the purpose of folding sinking as need.
Specific embodiment described herein only is that casehistory is made in design of the present invention.The technical personnel of the technical field of the invention can be made various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.