CN2038880U

CN2038880U - Folding bicycle

Info

Publication number: CN2038880U
Application number: CN88215558U
Authority: CN
Inventors: 蔡庆煌
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-24
Filing date: 1988-10-24
Publication date: 1989-06-07

Abstract

The utility model relates to a foldable bicycle. The main beam rod of the bicycle body is provided with a plurality of collapsible fulcrums, and the main beam rod is connected with a handle, a chair seat supporting rod and a chair seat subsidiary rod with movable fulcrums. Part of the handle adopts special C-shaped tube structure. The pedals are specially designed with practicability and novelty. Another characteristic is the folded structure of the main beam rod. The folding position of the folded structure is provided with a safety buckle lock, a safety fork lock and control levers of other safety fork locks, ensuring the safety of the utility model when running with the characteristics of rapidity, convenience, and safety during the operation of folding.

Description

Folding bicycle

The utility model relates to a kind of folding cycle.

Bicycle is a kind of ancient and economic vehicle, though its moulding constantly improves along with the transition of time, its groundwork and structure do not have great change yet, and it has generally comprised a fixing vehicle frame and front and back wheel etc.Because bicycle must be stepped on pedal with pin, the running of beginning to drive a vehicle, therefore, bicycle also often is used for being used as a kind of outdoor exercises utensil by people, this kind phenomenon, in recent years more so, so bicycle has been jumped by in the past the vehicle one and has become one of outdoor exercises instrument of awfully hot door in modern age.

Though bicycle claims light, but it is huge that its volume is still disliked, so it is all inconvenient aspect collection and carrying, especially bicycle is when carrying, export trade or long-distance transport, and its bulkiness often makes traffic cost account for sizable ratio, the inventor in view of this, be to study intensively design, invent a kind of folding bicycle, with the convenience of dwindling collection space and promoting carrying.

The purpose of this utility model is exactly will provide a kind of light collapsiblely to analyse the formula bicycle, thereby is convenient to deposit and transport.

According to folding cycle of the present utility model, include the folded handle of a fold-down; The mobile jib of one folding; The stretcher of one seat support, seat support pole, seat support auxiliary rod, a folding; Mobile jib and back mobile jib before the mobile jib of its folding is divided into, end connects front fork stem to preceding mobile jib before, the back mobile jib is held afterwards and is rear axle, between preceding mobile jib and the back mobile jib is collapsible, and the mobile jib lower end is provided with a safe padlock before burst, and the mobile jib lower end is provided with a safety fork lock after relative position.Both snap closes of mat and before the rotating shaft that is connected of mobile jib and mobile jib burst top, back, and make preceding mobile jib with after mobile jib combine; Front support rod and back stay are provided with the steady arm of four pivot joints in appropriate position, burst rear, support chain wheel shaft core bar, sprocket wheel and stretcher be in same rotating shaft before making, and seat support pole, seat support auxiliary rod promptly before mobile jib be basic bar with the back mobile jib, and setting is thereon; Two handles are inserted respectively in the c shape pipe of front fork stem top in addition, this c shape pipe is provided with outwardly a breach, and be connected with handle with a fulcrum, respectively be provided with a movable collar on two handles, cover is equipped with the inside and outside collar, and between inner sleeve and outer sleeve, form a groove, handle is when the breach of c shape pipe is pulled upwardly, depress groove and c shape pipe jointing that the collar makes the collar, so that handle is placed in the c shape pipe admittedly, and when desire is folding, then the collar is pulled upwardly, the collar is with after c shape pipe separates, and handle can be along the breach of c shape pipe, and folding downwards as centre of gration with fulcrum.

Described collapsible stretcher includes a pedal, a flap, a pedal rocking arm, wherein pedal is to pass across flap with a spike bar, the two is combined into one, and flap combines with pole on being fixed on the pedal rocking arm with a bearing, because of making pedal, bearing can rotate freely in company with flap, and side is provided with a circumferential notch by flap under the pedal, pulls straight 90 degree so pedal can be followed closely bar on axially, and is posted by pedal rocking arm lateral surface.Flap places pedal inner by pedal rocking arm place, its shape is made one " " shape, and pedal is to pass the position of side on the upper side, flap center with a spike bar by the pedal outer lateral with combining of flap, so that the state of equilibrium that the foot-operated face of pedal keeps up.

Fig. 1 is the spatial structure analysis chart of the utility model;

Figure 11 is that this is newly with novel lateral plan;

Fig. 2 is the constructional drawing of the utility model handle;

Fig. 2-the 1st, the structural analysis figure of the utility model handle collar;

Fig. 2-the 2nd, the constructional drawing of the folding back of the utility model handle;

Fig. 3 is the constructional drawing of the folding back of the utility model;

Fig. 4 is the constructional drawing of the utility model stretcher;

Fig. 4-the 1st, the structure that the utility model stretcher is folding;

Fig. 5 be the utility model mobile jib foldable structure in conjunction with the time figure;

Fig. 5-the 1st, the scheme drawing of the utility model mobile jib foldable structure when folding operation;

Fig. 6 is type figure outside the utility model safety padlock and the safety fork lock.

Seeing also Fig. 1 is the structural analysis figure of the utility model, and Figure 11 is the lateral plan of the utility model, wherein the wheel shaft (2) of front-wheel (1) is the fixed orifice (4a) that can be fixed in fork arm (3) or (4b) locates, to cooperate the wheel frame of various different sizes, link on the fork arm (3) sleeve pipe (5) is arranged, side connects handle (7) again on the sleeve pipe, but this handle is a foldable type handle, its structure as shown in Figure 2, its handle (7) is to insert among the c shape pipe (8), and fix it with the collar (9), the structural analysis of the collar (9) is shown in Fig. 2-1, wherein between outer sleeve (9a) and the inner sleeve (9a) groove (10) is arranged, when the collar and c shape are managed (8) when combining, be in harmony and c shape pipe (8) held before with groove (10) engage, when so desire folds the handle among Fig. 2 (7), as long as the collar (9) is pulled upwardly, just can handle (7) is folding downwards along the breach of c shape pipe (8), and folding downwards with fulcrum (11) as centre of gration, the structure of its folding back is shown in Fig. 2-2.See also on the sleeve pipe (5) among Fig. 1 the lower end again and respectively be provided with upside sleeve pipe (6b) and downside sleeve pipe (6a), downside sleeve pipe (6a) is provided with a latch (12), so that sleeve pipe (5) is connected with preceding mobile jib (14a), upside sleeve pipe (6b) also is provided with a latch (13) equally in addition, to connect pole (15), the other end of this pole (15) again seat support auxiliary rod (16) appropriate location connect seat support (17) by the steady arm of back song in axle (18) the insertion steady arm outer shafts (20), so can stretch up and down to adjust suitable seat height, and make seat support (17) fixing by knob (19), whole chair base structure is supported by chair Cuo pole (21) and seat support auxiliary rod (16), and two fulcrums (A) that are fixed in preceding mobile jib (14a) (B) on.The position is provided with a pedal wheel shaft to insert sprocket shaft core bar (22) on the girder bar, this pedal wheel shaft is respectively with four steady arms (14c), (14d), (14e), (14f) be articulated in the pivoting point (C) of mobile jib (14b) afterwards, (F) with the pivoting point (E) of preceding mobile jib (14a), (H) on, so that preceding sprocket wheel (23) (24b) schedules in the same rotating shaft with bicycle (24a), the square afterwards relative position of back sprocket wheel (23) is provided with a back sprocket wheel (25), and after this sprocket wheel (25) and trailing wheel (26) (28b) are fixed in back mobile jib (14b) via rear wheel bar (27) and screw (28a) and hold afterwards.The design of back mobile jib (14b) and preceding mobile jib (14a) is different with being connected of general bicycle, side sleeve pipe (6a) and side sleeve pipe under itself and the handle, seat support pole, connection between the seat support auxiliary pole all is movable connections, and do not adopt the mode of locking, with the convenient Zhe that receives, before pitch with rotating shaft (14g) and the safe padlock (14h) of being located at mobile jib (14b) below, back and the safety of being located at preceding mobile jib (14a) between mobile jib (14a) and back mobile jib (14b) and lock (14i) snap close and combine, and on back mobile jib (14b), be provided with a parking fork arm (50), use when car is parked for the user, when desire is folding, as long as the parking fork arm is tightly risen, depress again and be located at back mobile jib (14b) left side control folding PS (Push Switch) (51), safe padlock (14h) is separated with safety fork lock (14i), is that axle folds and make preceding mobile jib (14a) and back mobile jib (14b) with rotating shaft (14g), the structure of its folding back and can fold handle (7) downwards with fulcrum (11) as shown in Figure 3.Because each of the utility model partly all passed through special structure design, so the shared volume in folding back reaches minimum.The utility model sprocket shaft core bar (22) is to place in the pedal wheel shaft again, this pedal wheel shaft is by four steady arms (14e), (14f), (14d), (14c) be articulated on the mobile jib, and in the bar bar structure shown in Fig. 5-1 when desire is folding, because the relative distance between preceding mobile jib (14a) and the back mobile jib (14b) is dwindled, so action that the core bar (22) of the sprocket wheel in the pedal wheel shaft can four steady arms of circle and up moving, this movable structure design makes the utility model when folding, reach the volume minimum, advantage simple to operate, and mobile jib structure shown in Figure 5 in conjunction with the time, sprocket shaft core bar (22) in the pedal wheel shaft is then along with preceding mobile jib (14a) descends with the expansion of back mobile jib (14b), this moment four several straight lines that have been of pole, and be inverted triangle relation with preceding mobile jib (14a) and back mobile jib (14b), and structure physically can reach balance, the characteristics of holding strength maximum.

Seeing also Fig. 4 is the structure design of the utility model bicycle (24), wherein pedal (24) passes across flap (31) with a spike bar (30) the two is combined into one, and flap agrees with a bearing (32) and the pole (33) that is fixed on the pedal rocking arm (35), and flap (31) can be rotated freely because of the effect of bearing (32).Pedal (24) so can be axle with nail bar (30), be upwards amounted to (shown in Fig. 4-1) because a breach (34) is arranged simultaneously.Pole (33) is to adopt bearing (32) to link with the junction of flap (31), the sensitivity of pedal (24) rotation is increased, the more important thing is that pedal (24) is a upholder with flap (31), flap (31) is the strong point with pole (33) then, because this strong point (being the position of pole (33)) is positioned at flap (31) center-of-gravity position side on the upper side, and flap (31) one-tenth one "

" shape, so flap (31) state of equilibrium as shown in Figure 4, and not canting or upset arbitrarily, this also is one of feature of the utility model.

Another feature of the utility model is the structure that is that the girder bar is folding, consult i.e. its structure as can be known of Fig. 1 and Fig. 3, when folding shown in Fig. 1, preceding mobile jib (14a) and back mobile jib (14b) are with rotating shaft (14g), safe padlock (14h) combines with safety fork lock (14i), so functions of use identical with having general bicycle, its in conjunction with the time detailed structure as shown in Figure 5, wherein place the last safe padlock (14h) of preceding mobile jib (14a) and safety fork lock (14i) intermediate groove that places back mobile jib (14b) to go up closely to fasten among Fig. 5, and the detailed construction of safety fork lock (14i) and safe padlock (14h) as shown in Figure 6, its fork lock both sides have projection (14j), (14k), be a groove between two projections, and side is a dip plane to rear side before this groove, and the shape of safe padlock (14) also is a projection, and a dip plane also arranged in the front end outside, and in the front end inner bulge and perpendicular to projection, because safety fork lock (14i) is to place in the safety fork lock housing body (53), so can closely fasten with safe padlock because of the spring in the fork lock housing body (53) makes safety fork lock.When desire folds mobile jib, at first need parking fork arm (50) is tightly risen, utilize parking fork arm (50) parking fork arm plane, top (50a) that the safety fork is locked (14i) jack-up, safety fork lock (14i) is separated with safe padlock (14h), just can make mobile jib folding, but because on the appropriate location on parking fork arm plane (50a), one block (50b) is arranged, so during tight parking fork arm (50), block (50b) will withstand a safety pole (50a), so parking fork arm plane (50a) can't touch the block of safety fork lock (14i) front end, so also can't do the operation that folds, if depress this moment when placing back mobile jib (14b) near one of hind axle place PS (Push Switch) (51), then see through a cable wire (51a), safety pole housing (52) and safety pole (52a) is pulled back, the space that this action is formed, the last projection (50b) in parking fork arm plane (50a) is entered, and make parking fork arm plane (50a) that the safety fork is locked (14i) jack-up, the structure of this moment is shown in Fig. 5-1, when the safety fork is locked (14i) by jack-up, then safe padlock (14h) just is able to separate with safety fork lock (14i), and can release by one of the place ahead, parking fork arm plane (50a) breach (50c), this moment, then preceding mobile jib (14a) promptly can fold for the center makes progress in rotating shaft (14g) as long as give post-tensioning slightly in the bicycle grip; And after folding,, make preceding mobile jib (14a) and back mobile jib (14b) combination again once again as long as more preceding mobile jib (14a) is turned back according to reversing sense again, and do not need other any operation.In sum, the utility model only needs the shirtsleeve operation program to reach when the folding operation of girder bar, so good the outmatching on other folding cycle of generally commonly using of its design has novelty, and wound property and practicality.

Claims

1, a kind of folding cycle includes the folded handle of a fold-down; The mobile jib of one folding; The stretcher of one seat support, seat support pole, seat support auxiliary rod, a folding; The mobile jib that it is characterized in that folding is divided into preceding mobile jib and back mobile jib, end connects front fork stem to preceding mobile jib before, the back mobile jib is held afterwards and is rear axle, between preceding mobile jib and the back mobile jib is collapsible, and the mobile jib lower end is provided with a safe padlock before burst, the vertical rod lower end is provided with a safety fork lock after the relative position, both snap closes of mat and before the rotating shaft that is connected of mobile jib and mobile jib burst top, back, and make preceding mobile jib with after mobile jib combine; Front support rod and back stay are provided with the steady arm of four pivot joints in appropriate position, burst rear, support chain wheel shaft core bar, sprocket wheel and stretcher be in same rotating shaft before making, and seat support pole, seat support auxiliary rod promptly before mobile jib be basic bar with the back mobile jib, and setting is thereon; Two handles are inserted respectively in the c shape pipe of front fork stem top in addition, this c shape pipe is provided with outwardly a breach, and be connected with handle with a fulcrum, respectively be provided with a movable collar on two handles, cover is equipped with the inside and outside collar, and between inner sleeve and outer sleeve, form a groove, handle is when the breach of c shape pipe is pulled upwardly, depress groove and c shape pipe jointing that the collar makes the collar, so that handle is placed in the c shape pipe admittedly, and when desire is folding, then the collar is pulled upwardly, the collar is with after c shape pipe separates, and handle can be along the breach of c shape pipe, and folding downwards as centre of gration with fulcrum.

2, the folding cycle according to claim 1, it is characterized in that collapsible stretcher includes a pedal, a flap, a pedal rocking arm, wherein pedal is to pass across flap with a spike bar, the two is combined into one, and flap combines with pole on being fixed on the pedal rocking arm with a bearing, because of making pedal, bearing can rotate freely in company with flap, and side is provided with a circumferential notch by flap under the pedal, so pedal can be followed closely bar and pull straight 90 degree on axially, and is posted by pedal rocking arm lateral surface.

3, the folding cycle according to claim 2 is characterized in that flap places pedal inner by pedal rocking arm place, its shape make one "

" shape, and pedal is to pass the position of side on the upper side, flap center with a spike bar by the pedal outer lateral with combining of flap, so that the state of equilibrium that the foot-operated face of pedal keeps up.