A kind of rotary folding exempts to organize handrail
Technical field
The utility model relates to office and life appliance technical field, and particularly chair technical field is meant that specifically a kind of rotary folding exempts to organize handrail, and its chair back can be folded up when the spare time or during transportation, can launch during use.
Background technology
Chair is one of thing to sit on of liking very much of people, is widely used for family, hotel, meeting room.The current chairs structure, be fixing seat cushion mostly on the top of chair pin, the both sides fixed armrest of seat cushion, the rear side of handrail is backrest fixedly, be seat support and chair back fixed connection, can not relatively move between the two, the weak point that causes is, because backrest has certain height and thickness, such chair takes up room greatly, using in narrow and small office, is not easily, especially stores when the spare time, it is big to take up room in the transportation, increase cost of transportation, be unfavorable for long-distance accumulating, and in storage and transport process, be easier to the damage of colliding with, bring loss to the user; And if when transportation and storage, employing reduces the chair occupation space with the way that chair decomposes, need again when then using to re-assembly, waste time and energy, and dismounting so back and forth, also easily cause damage of components.
In order to save the space, the cost that reduces transportation and store, need not dismounting back and forth simultaneously, time saving and energy saving, China utility model patent ZL200420095162.X (patent name: office chair) disclosed the folding office chair of a kind of chair back,, on handrail, be provided with towards the inclined ramp of the chair back and the horizontal through hole that is communicated with inclined ramp by spring pin is set on the chair back, described inclined ramp is dried up, and flat through hole is far away more dark more, thereby when the chair back launched, the spring pin on the chair back entered the inclined ramp motion, pushed by inclined ramp, spring catch progressively shortens, after arriving through hole, discharge, reply normal, thereby spring catch is inserted in the described through hole, realize the fixing of the chair back, unlucky when the needs folding seat, tool using is arranged in the spring catch of through hole in the extruding of the through hole outside, make its shortening, when being as short as to a certain degree, rotate the chair back, can make spring catch break away from through hole and slide along slideway, to folding fully, spring catch leaves inclined ramp and replys original length.
The drawback of above-mentioned utility model patent is: unlucky in folding seat, need to seek additional means, come the top pressure spring pin by additional means, if the scene does not have additional means, then can't fold this office chair, and need under the situation that roof pressure does not loosen, promote the chair back simultaneously and just can fold, operation is very inconvenient.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of rotary folding to exempt to organize handrail, it is ingenious, easy to use that this rotary folding exempts to organize handrail design, its chair back when the spare time or transportation the time can fold up, can launch during use, thereby save the space, the cost that reduces transportation and store, need not dismounting back and forth simultaneously, time saving and energy saving.
To achieve these goals, rotary folding of the present utility model is exempted to organize handrail and is had following formation:
This rotary folding exempts to organize handrail, comprise the chair back and handrail, be characterized in, also comprise bayonet lock and bayonet lock fixed structure, the chair back and handrail are rotatably connected, described bayonet lock is fixed on described back seat sides, described bayonet lock fixed structure comprises shell body, release lever, screens parts and elastomeric element, described shell body is fixed in the described handrail, be provided with chute towards the surface of the described chair back on the described shell body, another side relative with described surface on the described shell body has guide groove, and described guide groove is communicated with described chute, and described screens parts and described elastomeric element are arranged in described guide groove, described elastomeric element two ends are respectively against described guide groove and described screens parts, described screens parts to small part passes across described chute and forms hole clipping, and described bayonet lock is arranged in described hole clipping, and described screens parts are connected with described release lever.
Preferably, described screens parts are swing links.
Preferably, described elastomeric element is a spring.
Preferably, described guide groove is an arc guide groove, and described release lever is a rotary handle, and described rotary handle and described shell body are rotatable fixing.
More preferably, described rotary handle is a swivelling cover.
Preferably, have projection on the described screens parts, have groove on the described release lever, described projection is arranged in described groove.
Preferably, described bayonet lock is fixed in the bottom of the described side of the described chair back, and described shell body is fixed on the rear lower of described handrail.
Preferably, described shell body and described handrail are integrally formed.
Preferably, the described chair back and described handrail are coupling.
More preferably, described chute is that the rotating shaft with the described handrail and the described chair back is a bit of cambered way at center.
More preferably, the described side of the described chair back is fixed with die, has screw in the described handrail, is equipped with screw in described screw and the described die.
The utility model adopts bayonet lock to add the mode that sideboard is a swing link, when the chair back launches, bayonet lock enters chute, thereby enter the chute bottom by chute by bayonet lock extruding swing link, after bayonet lock enters, swing link resets under spring action and passes across chute and form hole clipping and block bayonet lock, thereby the realization chair back is fixed, and folding seat is unlucky, the rotation rotary handle, thereby remove unimpeded chute thereby drive swing link, bayonet lock can leave chute with the rotation of the chair back then, and the chair back is folding, designs ingenious, easy to use, its chair back when the spare time or transportation the time can fold up, can launch during use, thereby save the space, the cost that reduces transportation and store, need not dismounting back and forth simultaneously, time saving and energy saving.
Description of drawings
Fig. 1 is the handrail outward appearance front view of a specific embodiment of the present utility model.
Fig. 2 is that the figure rotary folding exempts to organize the detailed view of handrail lock-out state.
Fig. 3 is the part cross-sectional schematic of B-B position among Fig. 1.
Fig. 4 is the cross-sectional schematic of B-B position among Fig. 3.
Fig. 5 is that the master of the handrail of specific embodiment shown in Figure 1 looks schematic diagram.
Fig. 6 is the front view that handrail assembling back becomes chair.
Fig. 7 is the rearview that handrail assembling back becomes chair.
Fig. 8 is the upward view that handrail assembling back becomes chair.
Fig. 9 is the schematic perspective view of the chair back of specific embodiment shown in Figure 1 after folding
The specific embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also Fig. 1~shown in Figure 8, rotary folding of the present utility model exempts to organize handrail, comprise the chair back 1 and handrail 2, also comprise bayonet lock 3 and bayonet lock fixed structure 4, the described chair back 1 is connected with screw 16 at screw 14 places with described handrail 2 and can does the pivot rotation by screw 16, described bayonet lock 3 is fixed on the described chair back 1 side, described bayonet lock fixed structure 4 comprises shell body 5, release lever 6, screens parts 7, elastomeric element 8 and connecting screw 15, described shell body 5 is fixed in the described handrail 2, be provided with chute 9 towards the surface 51 of the described chair back 1 on the described shell body 5, another side 52 relative with described surperficial 51 on the described shell body 5 has guide groove 10, described guide groove 10 is communicated with described chute 9, described screens parts 7 and described elastomeric element 8 are arranged in described guide groove 10, described elastomeric element 8 two ends are respectively against described guide groove 10 and described screens parts 7, described screens parts 7 to small part passes across described chute 9 and forms hole clipping 11, described bayonet lock 3 is arranged in described hole clipping 11, and described screens parts 7 are connected with described release lever 6.
Preferably, described screens parts 7 are swing links.In a specific embodiment of the present utility model, the outer arc face of swing link is towards chute 9 outlets, thereby can strengthen blocking the effect of bayonet lock 3, and when launching the chair back 1, realize automatic function, promptly only need the rotation chair back 1 to get final product, because during the chair back 1 rotation, thereby the arc surface that bayonet lock 3 can the extruding swing links will be against elastomeric element 8 compressions of swing link, and then enter chute 9 bottoms, and elastomeric element 8 resets swing link and blocks described bayonet lock 3 and make it can not withdraw from hole clipping 11 subsequently.
In a specific embodiment of the present utility model, described elastomeric element 8 is springs.Obviously, elastomeric element 8 can also be other parts with spring function, such as elastomer or the like.
Preferably, described guide groove 10 is arc guide grooves, and described release lever 6 is rotary handles, and described rotary handle and described shell body 5 are rotatable fixing.In a specific embodiment of the present utility model, described rotary handle is a swivelling cover.
Preferably, have projection 12 on the described screens parts 7, have groove 13 on the described release lever 6, described protruding 12 are arranged in described groove 13.In a specific embodiment of the present utility model, have projection 12 on the swing link, have groove 13 in the swivelling cover, described protruding 12 are arranged in described groove 13, and swivelling cover center and described shell body 5 are connected by screw.Thereby by the rotation swivelling cover, drive swing link and in arc guide groove, move, the blockade of realization chute 9 and unimpeded.
In a specific embodiment of the present utility model, described bayonet lock 3 is fixed in the bottom of the described side of the described chair back 1, and described shell body 5 is fixed on the rear lower of described handrail 2.
In a specific embodiment of the present utility model, described shell body 5 and described handrail 2 are integrally formed.Certainly, also can be that shell body 5 is fixed in the described handrail 2.
Preferably, the described chair back 1 and described handrail 2 are coupling.In a specific embodiment of the present utility model, described chute 9 is that the rotating shaft with described handrail 2 and the described chair back 1 is a bit of cambered way at center, form U-shaped chute roughly, the described side of the described chair back 1 is fixed with die, have screw 14 in the described handrail 2, be equipped with screw in described screw 14 and the described die.As rotating shaft, the chair back 1 can rotate around described screw with respect to handrail 2 by described screw.
Rotary folding of the present utility model exempts to organize handrail in use, launch the chair back 1, the chair back 1 rotates relative to handrail 2, and the chair back 1 bottom moves closer to handrail 2 rear lowers, bayonet lock 3 enters chute 9, bayonet lock 3 extruding swing links make the spring compression against swing link, thereby enter chute 9 bottoms by chute 9 then, after bayonet lock 3 enters, swing link resets under spring action and passes across chute 9 and form hole clippings 11 and block bayonet lock 3, thereby realizes that the chair back 1 is fixing, as shown in Figure 1; When the time spent does not maybe need to transport, can the chair back 1 is folding, process is specific as follows: rotate described swivelling cover, thereby drive swing link and remove unimpeded chute 9, rotate the chair back 1 then, bayonet lock 3 can skid off chute 9 with the rotation of the chair back 1, the last chair back 1 folds, as shown in Figure 8.
To sum up, it is ingenious, easy to use that rotary folding of the present utility model exempts to organize handrail design, its chair back when the spare time or transportation the time can fold up, can launch during use, thereby save the space, the cost that reduces transportation and store, need not dismounting back and forth simultaneously, time saving and energy saving.
In this specification, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.