CN2080785U

CN2080785U - Dual-purpose folding chair for bicycle carrier and in room

Info

Publication number: CN2080785U
Application number: CN 90226211
Authority: CN
Inventors: 徐茂荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-25
Filing date: 1990-12-25
Publication date: 1991-07-17

Abstract

The utility model relates to a dual-purpose folding chair for a bicycle carrier and in room which is an expansion product of a domestic folding chair, belonging to the field of furniture. The dual-purpose folding chair comprises a seat cushion, a seat frame, a back pole, a backrest, a front supporting leg, a back supporting leg, an oblique supporting leg, a foot pedal device and a clamping device. If the dual-purpose folding chair is clamped on the back seat of a bicycle, the dual-purpose folding chair is an additional chair on the back seat of a travelling crane; if the dual-purpose folding chair is arranged in the inner side of a living room separately, the dual-purpose folding chair is a domestic folding chair. The utility model can change freely and conveniently among the additional chair on the back seat of the bicycle, the domestic folding chair and folding collection. The utility model has the advantages of smaller occupation area and one object with two functions.

Description

Dual-purpose folding chair for bicycle carrier and in room

The utility model relates to a kind of rear bicycle and room dual-purpose folding chair, is the expansion product of family expenses folded seat, belongs to furniture technical field.

Existing various family expenses folded seat does not all have with bicycle and gets in touch.A kind of patented product that market is on sale--bicycle rear one side additional fold formula wheelchair--comes down to a kind of offset three-wheel trailer, not only floor area and riding resistance are bigger for it, and can not independently bring into play other function from the idle family in bicycle dismounting back.

The purpose of this utility model is to provide a kind of dual-purpose folding chair, and it is clamped on the rear bicycle frame is the additional seat of a rear bicycle, and placing separately in the room then is a family expenses folded seat.

The purpose of this utility model is achieved in that dual-purpose folding chair is by seat cushion (1), chair base frame (2), chair back bar (16), backrest (15), front leg strut (4), rear support leg (12), tiltedly supporting leg (5) is formed.(relative position such as front and back is as the criterion with the orientation that the people is sitting on the chair, down with.) structure that front leg strut (4) in the existing family expenses folded seat and chair back bar (16) are fused changes both into and disconnect, respectively with the hinged front and rear edge that is installed on framework of chair base frame (2), rotate and be provided with stop gear around separately fulcrum shaft (20) and (14), so that reserve the requisite space of clamping on the rear bicycle frame.Rear support leg (12) is articulated in the same fulcrum shaft (14) of chair back bar (16) and chair base frame (2) and in chair back bar (16) outside, and tiltedly supporting leg (5) is articulated in the middle and upper part fulcrum shaft (7) of front leg strut (4) and in the inboard of front leg strut (4).One folding foot pedal apparatus (6) is arranged at front leg strut (4) bottom.Rear support leg (12) can be around fulcrum shaft (14) to back upper place rotation and hang on the chair back bar (16), tiltedly supporting leg (5) can rotate and folding hanging on the front leg strut (4) to the front lower place around the middle and upper part fulcrum shaft (7) of front leg strut (4), to adapt to the clamping needs on the rear bicycle frame.Front tension bar (32) and back stay (31) are arranged on the chair base frame (2), increase the rigidity of framework on the one hand, holding device (18) and (17) are housed on the pull bar of front and back on the other hand, be used for the utility model clamping at the rear bicycle frame.Holding device comprises card (17) behind one group of fore-clamp (18) and a group, and both can be respectively along front tension bar (32) and back stay (31) adjusting left and right sides clamping position.Back card (17) is gone up and is provided with sliding guide mechanism (64) and (67) in the direction perpendicular to back stay (31), can regulate the clamping centre distance of back card (17) and fore-clamp (18), the scope of regulating is by stop screw (63) and (69) control, to satisfy the clamping requirement on the rear bicycle frame of different size.On the back card (17) the fixedly elasticity safety belt (68) of other end band knot that can be undone by a pull of an end is housed also, to prevent that clamping people on the rear bicycle frame from sitting the seat that may cause when center of gravity moves forward on it and leaning forward.Set up rubber bar pad (55) on the fore-clamp (18), to adapt to the clamping needs of rear bicycle frame with material various outer diameter size.In order to improve integrally-built rigidity, be welded with singletree (28) between two bars about chair back bar (16), front leg strut (4), rear support leg (12) and oblique supporting leg main parts such as (5); (33), (34); (29), (30) and (21), (24).

That accompanying drawing is showed is an embodiment of the present utility model:

Fig. 1 is the front view of the utility model when family expenses folded seat running condition;

Fig. 2 is the structure of oblique supporting leg (5) and part sectional view is installed;

Fig. 3 is the birds-eye view after Fig. 1 removes seat cushion (1);

Fig. 4 is the installation section-drawing of stretcher (35);

Fig. 5 is the rotating and limiting mechanism of chair back bar (16) and the rotating and limiting mechanism local structure assembling relationship figure of rear support leg (12);

Fig. 6 is the rotating and limiting mechanism local structure assembling relationship figure of front leg strut (4);

Fig. 7 is the parts and the assembling relationship figure on front leg strut (4) thereof of foot pedal apparatus (6);

Fig. 8 is the part assembling drawing of fore-clamp (18);

Fig. 9 is the part assembling drawing of back card (17).

Further specify the mutual alignment relation and the conversion process thereof of the utility model each inter-module under different running conditions below in conjunction with accompanying drawing.

The utility model is when family expenses folded seat running condition, and chair back bar (16) turns to tilted rearward certain angle and spacing with respect to chair base frame (2) around fulcrum shaft (14); Front leg strut (4) turns to around fulcrum shaft (20) and (14) respectively with rear support leg (12) and becomes splayed and spacing forward with the certain angle that recedes; Foot pedal apparatus (6) can draw back also can fold and lean against on the front leg strut (4); Stretching the receding of folding oblique supporting leg (5) lands, and blocks the lower brace bar (30) of rear support leg (12) with the crotch (11) of its lower end.For oblique supporting leg (5) can being folded and can after stretching, being subjected to external force to make time spent maintenance linear state (except the crotch of lower end), be provided with one section slidable sleeve (25) at the last singletree (21) of oblique supporting leg (5) and the part between the lower brace bar (24).When stretching the landing of oblique supporting leg (5), sleeve pipe (25) entangles the joint component (22) of collapsible bending of oblique supporting leg (5) and (23) to limit its mobility, and oblique supporting leg lower brace bar (24) is then withstood in sleeve pipe (25) lower end.As being pushed into its top on the sleeve pipe (25) near on the oblique supporting leg during singletree (21), tiltedly supporting leg (5) is just can upwards fold up.The whitworth mechanism that the rotation of chair back bar (16) and limit function are made up of chair base frame (2), guide plate (10), chair back bar (16) and slide block assembly (8) is finished.Guide plate (10) can be around hinging supporting shaft (40) swing, and the sweptback angle of chair back bar (16) is by upper port (41) position control of the elongated slot (42) on the guide plate (10).Be riveted on the plate spring (9) on the chair back bar (16) and be welded on the stop gear that backing pin (13) on the rear support leg (12) is formed rear support leg (12), limited the end position that rear support leg (12) is rotated forward by the below.Be contained in the limiting stopper (3) on front leg strut (4) top and form the stop gear of front leg strut (4), limited the end position that front leg strut (4) is rotated backward by the below with the lining (19) that nut (46) is pressed in front tension bar (32) outer end.The stop gear (9) of rear support leg (12) and (13) cooperate with stop gear (3) and (19) of front leg strut (4), have limited the utility model rear support leg (12) when family expenses folded seat running condition and have been rotated the mobility that is rotated backward by the below with front leg strut (4) by the below forward; Tiltedly the combination (blocking mutually) of the lower brace bar (30) of the crotch (11) of supporting leg (5) lower end and rear support leg (12) has then stoped rear support leg (12) to rotate the mobility of rotating to the front upper place with front leg strut (4) to the back upper place, thereby has guaranteed the stability of this running condition.Have deep-slotted chip breaker (45) on the limiting stopper (3) on front leg strut (4) top, unclamp clamp assembly (44), change its relative position in deep-slotted chip breaker (45), promptly allowing limiting stopper (3) make trace around its hinging supporting shaft (43) rotates, just can finely tune the end position of front leg strut (4) when family expenses folded seat running condition, make and assembly error in order to compensation.After adjusting clamp assembly (44) is tightened.The effect of--plate spring (9)--is to adopt elastic element in the stop gear of rear support leg (12), exerting oneself at end position, rear support leg (12) can be by the rotation of below to previous crops one minute angle when moving for plate, the crotch (11) that is beneficial to the lower brace bar (30) of rear support leg (12) and oblique supporting leg (5) lower end combination or separate easily.Finish drawing back of foot pedal apparatus (6) and folding packing up by the whitworth mechanism that foot-operated pole (26), foot-operated guide plate (27), slide block assembly (49) and front leg strut (4) are formed.Foot-operated pole (26) can be rotated around its hinging supporting shaft (48) on front leg strut (4), foot-operated guide plate (27) is around its hinging supporting shaft (50) swing with foot-operated pole (26), and the elongated slot (47) on the foot-operated guide plate (27) can with slide block assembly (49) slip mutually that is contained on the front leg strut (4).End position after foot pedal apparatus (6) draws back is by the front port position control of the elongated slot (47) on the foot-operated guide plate (27).Stretcher (35) uses fastening assembly (37) (as screw, nut etc.) clamping on foot-operated adapter plate (36), foot-operated adapter plate (36) is welded on the suitable position of foot-operated sleeve pipe (39), foot-operated sleeve pipe (39) is sleeved on the pedal spindle (38), pedal spindle (38) is loaded in foot-operated pole (26) front aperture, and lock with nut (51) at pedal spindle (38) two ends, the left and right sides.Assembling rear treadle sleeve pipe (39) can be gone up at pedal spindle (38) and rotate.

When the utility model on the rear bicycle frame during clamping, invariant position when chair back bar (16) and front leg strut (4) remain on family expenses folded seat running condition is separated the lower brace bar (30) and the crotch (11) of oblique supporting leg (5) lower end of rear support leg (12).Rear support leg (12) rotates to long and short dash line (12 ') position and hangs on the hook of the suitable position that is arranged on chair back bar (16) to the back upper place around fulcrum shaft (14), and tiltedly supporting leg (5) hangs on the hook or elastic webbing of the suitable position that is arranged on front leg strut (4) to the front lower place rotation and after being folded to dot-dash broken line (5 ') position.Upward foot pedal apparatus (6) is drawn back end position forward by front leg strut (4), then according to the actual conditions of the rear bicycle frame of institute's adapted, go up two pairs of front clamps of left and right adjusting (52) at front tension bar (32) and also fix it, the arc groove on the front clamp (52) is stuck on one side cylindrical (57) of rear bicycle frame with holding screw (53) to correct position.Again the back card base (62) of card (17) after two pairs is gone up left and right adjusting to correct position at two back stays (31), move forward and backward in the T type groove (67) of T type slide block (64) on back card base (62) that will be riveted together with spring clamp (65) simultaneously and position that the clamping center of fore-clamp (18) adapts on, and blocking the another side cylindrical (66) of rear bicycle frame with spring clamp (65), elasticity safety belt (68) passes the back tension and hangs the jail on the hook (70) of back card base (62) trailing flank below this limit cylindrical (66) of rear bicycle frame.L type front plate (56) is around go forward bearing pin (54) rotation and walking around below this limit cylindrical (57) of rear bicycle frame of front clamp (52), the square groove (59) of front plate (56) rear end blocks the eyelet bolt (60) that is contained on front clamp (52) rear pin shaft (61), tighten the fly nut (58) on the eyelet bolt (60), make front plate (56) clamp this limit cylindrical (57) of rear bicycle frame with front clamp (52).So just finish the clamping of the utility model on the rear bicycle frame, become the additional seat of all less rear bicycle of a floor area and riding resistance.When the people sits on it by the gravity of himself and the relative position of the pressure of human body each movable component when keeping additional seat running condition.When the rear bicycle frame with the material external diameter hour, the available rubber bar pad (55) that is fixed on front clamp (52) leading flank wrap in that this limit cylindrical (57) of rear bicycle frame is gone up or folding mat between the arc groove of front clamp (52) and front plate (56), with the assurance reliable grip.

After the utility model is pulled down from the rear bicycle frame, chair back bar (16) is rotated forward together with the rear support leg (12) that hangs on it, simultaneously front leg strut (4) is rotated to close chair back bar (16) and when substantially parallel with seat cushion (1) to the front upper place, just collapsible being covered up together with hanging oblique supporting leg (5) on it and the foot pedal apparatus (6) after folding the packing up.

The utility model can be selected mutual conversion arbitrarily easily between rear bicycle additional seat, family expenses folded seat and three kinds of states of folding storage, not only floor area is less, and can dual-use material.

Among the embodiment of the present utility model, the area of its seat cushion (1) is (about * front and back) 360 * 300mm ²When family expenses folded seat running condition, seat cushion (1) top to floor level be 430～440mm, backrest (15) upper limb relative height to seat cushion (1) is 370～380mm.20 ° of chair back bar (16) hypsokinesis, the center tangent plane of backrest (15) and the hypsokinesis angle of vertical surface are about 10 °, and front leg strut (4) leans forward and rear support leg (12) hypsokinesis becomes splayed for each 15 °.Front leg strut (4) and rear support leg (12) are 240mm with the hinge fulcrum shaft (20) of chair base frame (2) and the width between centers of (14).It is 117～153mm that back card (17) clamps the centre distance setting range with fore-clamp (18), and clamping face width (left and right directions) is 15～20mm.The first half of chair back bar (16), front leg strut (4), rear support leg (12) and oblique supporting leg (5) all adopts φ 19 * 2 welded steel pipe manufacturings, the ∪ shape structure that the also available upper limb bending of chair back bar (16) fuses.Tiltedly the latter half of a bottom bands of trouser legs crotch (11) φ 19 round steel manufacturings, tiltedly the joint component (22) of the collapsible bending of supporting leg and (23) adopt similar drawing compasses to draw the inclined-plane tenon groove structure of bar.Tiltedly supporting leg sleeve pipe (25) adopts φ 22 * 1.2 wrought iron pipe range 150mm.Singletree (28) on chair back bar (16), front leg strut (4), rear support leg (12) and the oblique supporting leg (5); (33), (34); (29), φ 10 round steel or φ 12 * 1.5 welded steel pipe manufacturings are all adopted in (30) and (21), (24).Front tension bar (32) and back stay (31) are ridden sleeve pipe (39) φ 12 * 1.5 or φ 13 * 1.2 welded steel pipe manufacturings with φ 10 round steel, pedal spindle (38) with φ 8 or φ 10 round steel.Chair base frame (2) bends with 2～2.5mm sheet steel, and the guide plate (10) in the rotating and limiting mechanism of chair back bar (16) and the foot-operated pole (26) of foot pedal apparatus (6), foot-operated guide plate (27) and foot-operated adapter plate (36) etc. all adopt the manufacturing of 2～3mm sheet steel.Equal chromium plating of the outside face of above-mentioned product or japanning.Stretcher (35) then can adopt the various soft or hard face structures in the existing folded seat with plank or injection structure, seat cushion (1) and backrest (15).Hang rear support leg (12) and folding after the hanging hook assembly (not drawing in the accompanying drawing) of oblique supporting leg (5) usefulness adopt 2～3 inch window catch hardwares, its hook and lifting lug are welded on respectively on the suitable position of chair back bar (16) and rear support leg (12) and front leg strut (4) and oblique supporting leg (5).Gauge members such as other screw, nut, packing ring, rivet determine it according to structure and requirement of strength.Present embodiment can be on the rear bicycle frame of 26 inch and two kinds of specifications of 28 inch clamping, back mounting is that φ 8～φ 15 all is suitable for the material external diameter.

Claims

1, a kind of rear bicycle and room dual-purpose folding chair, form by seat cushion (1), chair base frame (2), chair back bar (16), backrest (15), front leg strut (4), rear support leg (12), oblique supporting leg (5), it is characterized in that: front leg strut (4) and chair back bar (16) disconnect, with the hinged front and rear edge that is installed on framework of chair base frame (2), rotate and be provided with stop gear respectively around separately fulcrum shaft (20) and (14); One folding foot pedal apparatus (6) is arranged at front leg strut (4) bottom; Front tension bar (32) and back stay (31) are arranged on the chair base frame (2), holding device (18) and (17) are housed on the pull bar of front and back, be used for the dual-purpose folding chair clamping at the rear bicycle frame.

2, according to the said dual-purpose folding chair of claim 1, it is characterized in that: rear support leg (12) can and hang on the chair back bar (16) to the back upper place rotation, tiltedly supporting leg (5) can be to front lower place rotation and folding hanging on the front leg strut (4), to adapt to the clamping needs on the rear bicycle frame.

3, according to the said dual-purpose folding chair of claim 1, it is characterized in that: holding device comprises card (17) behind one group of fore-clamp (18) and a group, and both can be respectively along front tension bar (32) and back stay (31) adjusting left and right sides clamping position.

4, according to claim 1 and 3 said dual-purpose folding chairs, it is characterized in that: back card (17) is gone up and is provided with sliding guide mechanism (64) and (67) in the direction perpendicular to back stay (31), can regulate the clamping centre distance of back card (17) and fore-clamp (18), to satisfy the clamping requirement on the rear bicycle frame of different size.