CN201099321Y - Wheelbase adjustable bicycle - Google Patents

Abstract

The utility model relates to a bicycle with adjustable wheel tread, which comprises a bicycle frame. A bottom bracket is arranged at the lower part of the frame, a supporting rod is firmly connected on the bottom bracket, the bottom bracket is also firmly connected with a rear fork equipped with a rear wheel and a seat post equipped with a seat cushion as a whole, and treading driving component is installed on the bottom bracket; a connecting rod set at least including a front connecting rod and a rear connecting rod and swinging back and forth is arranged on the frame, one end of the front connecting rod and one end of the rear connecting rod are respectively movably pivoted and positioned at the front and the rear ends of an upper tube, and the other ends are respectively pivoted and positioned at the positions of the supporting rod of the of the and the rear fork; the adjacent upper end of the seat post is movably propped against the upper pipe, and is locked and positioned through a locking component; when the front and the rear connecting rods synchronously swing back and forth, the bottom bracket, the supporting pipe of the bottom bracket, the seat post, the rear fork, the treading driving component, the seat cushion and the rear wheel are synchronously displaced and adjusted back and forth. When a rider rides the bicycle, the wheel tread of the front and the rear wheels can be adjusted to the optimal condition according to the body type of the rider; when the bicycle is not in use, the wheel tread of the front and the rear wheels can be minimized, thereby facilitating the collection, the carrying and the transporting of the bike.

Description

Can adjust the bicycle of wheelspan

Technical field

The utility model relates to a kind of bicycle, refers in particular to a kind of bicycle of adjusting wheelspan.

Background technology

Mainly as walking-replacing tool, so its function and moulding are all comparatively simple, wherein, no matter whether the length of bicycle be running condition all remains unchanged bicycle, promptly is the comparatively simple example of moulding, function in the past.Nowadays, bicycle is except having the effect of riding instead of walk, also promoted and be recreation tool, so, also be constantly to promote and have on function than diversity except have diversified transformation in moulding, wherein, the appearance of Folding Bicycle is that bicycle has been realized a quantum jump on moulding and function, makes bicycle when running condition not, can directly be folded, reach that dwindling takes up room and be convenient to collect, put and carry the effect of transporting.

Above-mentioned Folding Bicycle design-calculated marrow mainly is that the vehicle frame that will provide front and rear wheel to install is made as the structure that can give folding and expansion, so that desire is when using bicycle, only need vehicle frame is launched get final product, and bicycle only need give folding with vehicle frame again and get final product when not using.The feature of Folding Bicycle maximum and when using advantage to be that bicycle is the folded state of obsolete static state, but when being dynamic expansion running condition for bicycle, the function of its motion is promptly identical with Regular Bicycle, the same; That is, wherein the wheelspan of front and rear wheel is identical with existing bicycle after vehicle frame launches, remain unchanged, thereby, when different build users drive same bicycle jointly, just drive the phenomenon that efficient is not good, comfort is not enough even can't drive through regular meeting.

For this reason, industry was also once designed a kind of bicycle that can adjust the front and rear wheel distance as shown in Figure 1, it mainly is that the pipe 11 of going up with vehicle frame 1 is made as on the leading portion and manages 112 on the pipe 111 and back segment, wherein, pipe 12 before the front end of pipe 111 is welded on the leading portion, pipe 112 rear end is welded in seat pipe 13 on the back segment, and the rear end of pipe 111 and can manage 112 front end penetrate on back segment on this leading portion, and can do overhanging, in the action of contracting.That is, after this front-wheel 2, trailing wheel 3 are incorporated into the preceding pipe 12, seat pipe 13 of vehicle frame 1 by front fork 4, back vent 14 respectively, utilize on the leading portion of vehicle frame 1 pipe 111 can manage the 112 enforcements start of stretching, contract on back segment, then the wheelspan of this front-wheel 2, trailing wheel 3 can reach the adjustment effect.Though this mode can reach the effect of adjusting the front and rear wheel distance, the disappearance of following blemish in an otherwise perfect thing is arranged on the implementation, that is:

1; owing to manage 112 on seat pipe 13 and the back segment; after the 5 mutual solid weldings of five-way pipe; pipe 111 just is and wears the shape group and be located at and manage 112 on the back segment on the leading portion; and with seat pipe 13 or five-way pipe 5 between there is no and anyly be connected or set firmly relation; therefore; when the rider is seated on the seat cushion 6; body weight imposes on front-wheel 2 respectively; during trailing wheel 3; this front-wheel 2; the upward reaction force of trailing wheel 3; must directly react the articulated section that concentrates on the leading portion pipe 112 on pipe 111 and the back segment; and cause both with application of force shape pivot joint down mutually; so; at long-time and front-wheel 2; trailing wheel 3 travels on uneven ground-surface motion down through regular meeting; wearing and tearing or metaboly will very easily take place because of unbalanced pivot joint application force in this articulated section; and then; flexible the implementing of pipe 111 had some setbacks or loosening anxiety, simultaneously, also very easily produce and drive different sound and drive uncomfortable phenomenon to what hand wobble was difficult for controlling with causing.

2, the rear end owing to pipe 112 on this back segment is welded in seat pipe 13, and the rear end of pipe 111 can't be run through seat pipe 13 again on this leading portion, therefore, the length that is recessed in pipe 112 on the back segment at pipe 111 on the leading portion will be restricted under the situation, jointly, the adjustment of the wheelspan of this front-wheel 2, trailing wheel 3 also will be restricted and can't enlarge, and then, not only can't fully reach and dwindle the effect that bicycle takes up room, can supply different build users drive the intended purposes of a bicycle jointly for expectation, the anxiety of having a greatly reduced quality is more arranged.

The utility model content

Technical problem to be solved in the utility model is: a kind of bicycle of adjusting wheelspan is provided, it can significantly adjust the wheelspan of front and rear wheel easily, take up room and can dwindle fully, and can make different build users all can cosily drive same bicycle jointly.

The further technical matters to be solved of the utility model is: a kind of bicycle of adjusting wheelspan is provided, and it is simple for structure, installs, easy to use, makes the operation of bicycle have the best and drives effect, and the tool collection, carry the simplicity of transporting.

For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of bicycle of adjusting wheelspan, and it is provided with a vehicle frame, vehicle frame has pipe on, last pipe front end is connected with preceding pipe, and handle is equipped with in the upper end of preceding pipe, front fork is equipped with in the lower end, and front-wheel is equipped with at the place at front fork; Vehicle frame below is provided with the five-way pipe, and the five-way pipe is connected with pole, and the five-way pipe also fixes as one with back vent, a seat pipe, is equipped with on the five-way pipe and tramples driven unit, and back vent is equipped with trailing wheel, on the seat pipe seat cushion is housed; Also being equipped with on the vehicle frame can forward and backward swing and comprise the linkage rod group of front rod, rear linking rod at least, one end of this front rod, rear linking rod articulates the forward and backward two ends that are positioned pipe respectively versatilely, and the other end articulates five-way pipe pole and the back vent place that is positioned to fix as one respectively versatilely; The adjacent upper end of seat pipe is moving type ground by holding pipe, and the seat pipe is locked locatees in that latch components is being housed by the place of holding; During the synchronous forward and backward swing of the front rod of this linkage rod group, rear linking rod, the five-way pipe that fixes as one, five-way pipe pole, seat pipe, back vent and trample the synchronous forward and backward displacement adjustment of driven unit, seat cushion and trailing wheel.

The beneficial effects of the utility model are: the utility model is by means of the forward and backward swing of the linkage rod group of being located at vehicle frame, make the five-way pipe that fixes as one mutually, back vent, seat pipe and trample forward and backward together displacements such as driven unit, seat cushion, trailing wheel, thereby the wheelspan of front and rear wheel can significantly be adjusted, not only can fully reach and dwindle the effect that takes up room, also can make different build users all can cosily drive same bicycle jointly; The utility model be can yet be regarded as a kind of simple for structure, installation, easy to use, and operation has the best and drives effect, and the bicycle that transports simplicity is collected, carried to tool.

The utility model is described in further detail below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the existing plan sketch that can adjust the bicycle of wheelspan.

Fig. 2 is the plan sketch of the utility model embodiment.

Fig. 3 is the schematic perspective view that the utility model linkage rod group is installed on the embodiment of vehicle frame.

Fig. 4 is that the schematic perspective view that pipe interconnects embodiment managed, goes up by the utility model latching system with seat.

Fig. 5 is the plan sketch that the utility model is implemented wheelspan adjustment operation embodiment.

Fig. 6 is the plan sketch of the utility model embodiment folding operation embodiment.

The specific embodiment

As Fig. 2～shown in Figure 4, the utility model mainly is equipped with at vehicle frame 1 can forward and backward swing and comprise the linkage rod group 8 of front rod 81, rear linking rod 82 at least, the upper end of this front rod 81, rear linking rod 82 is articulated in the forward and backward two ends of going up pipe 11 that fix as one with preceding pipe 12 versatilely by means of pivot 811,821 respectively, and the lower end of front rod 81, rear linking rod 82 is articulated in pole 51 and the back vent 14 (present embodiment include Seat stay 141 and Chain stay 142) affixed with five-way pipe 5 versatilely by means of pivot 812,822 respectively; In addition, seat pipe 13 is designed to and five-way pipe 5 and back vent 14 Joints, and its adjacent upper end manages 11 with moving type by holding, the five-way pipe be provided with comprise crank 91, pedal 92, large fluted disc 93 etc. trample driven unit 9; Whereby, front rod 81, rear linking rod 82 are that turning point is when implementing forward and backward swing with the pivot 811,821 of upper end respectively, this is hubbed at five-way pipe pole 51, five-way pipe 5, the back vent 14 of lower end respectively and tramples driven unit 9, trailing wheel 3 etc. will forward and backward together thereupon swing displacement, simultaneously, seat pipe 13 that fixes as one with five-way pipe 5, back vent 14 and the seat cushion 6 that is mounted thereon also can be done forward and backward displacement action.

Wherein, this pipe 13 also is equipped with a latch components 10 by the place of holding mutually with last pipe 11, so that seat pipe 13 lockings of forward and backward displacement adjustment can be positioned pipe 11; The mode that this latch components 10 is provided with is more, the locked assembly of available any screw class or other clamping assembly or buckle solid assembly and realize, as long as can really the seat pipe 13 of going through forward and backward displacement adjustment be set firmly, the present pipe of present embodiment 13 avris have clamping plate 102 with pintle(-tel) 101 pivots alive, these clamping plate 102 match with seat pipe 13 and will go up in the middle of pipe 11 is located in, adjust button 103 spiral shells by one and be located at seat pipe 13 and clamping plate 102 are implemented the control that whether urges, these clamping plate 102 just can be managed 13 with seat and be matched and do pipe 11 whether actions on the clamping.

Please consult shown in Figure 5 again, because the front rod 81 of linkage rod group 8, after rear linking rod 82 upper ends are hubbed at pipe 11, before both lower ends can be implemented, back swing running, and in swing, can make the five-way pipe pole 51 that fixes as one, five-way pipe 5, seat pipe 13, back vent 14, and be mounted thereon respectively trample driven unit 9, before seat cushion 6 and trailing wheel 3 etc. carry out together, back displacement action, then according to the bicycle user of different builds, its need push away or the post-tensioning action before easily seat cushion 6 being implemented, so that front rod 81, the stressed swing in the lower end of rear linking rod 82, naturally, this tramples driven unit 9, the position of seat cushion 6 and trailing wheel 3 just can acquire change immediately, and preceding, back position is adjusted, the ride position of user's the best directly is provided in the change.Certainly, finish after forward and backward position adjusts when aforementioned driven unit 9, seat cushion 6 and the trailing wheel 3 trampled, by the locking action of latch components 10, thereby will have the location stability, the rider also can reach whereby and drive safe effect.

As seen, utilize the forward and backward swing of linkage rod group 8 and the locking running of latch components 10, can make the wheelspan and the seat cushion 6 of bicycle front-wheel 2, trailing wheel 3, the position of trampling driven unit 9 together adjust, change, for the bicycle user of different builds, it drives, uses same bicycle also will have more actual required comfort feature, simplification and safety really jointly.

This front rod 81, rear linking rod 82 are except reaching the effect of adjusting front and rear wheel distance and change seat cushion 6, trampling driven unit 9 positions in forward and backward swing, also have connection, supportive, so that the rider is when being seated at seat cushion 6, human body gravity can balancedly impose on whole vehicle frame and front-wheel, the trailing wheel whereby, and then makes bicycle have better intensity and drive firm, stability.

The utility model is under last pipe 11 length unmodified conditions, utilize the forward and backward swing of linkage rod group 8 to adjust the front and rear wheel distance, but not it is existing to change the mode that pipe 11 length are adjusted that goes up, therefore, with regard to the adjusting range, the utility model obviously has the effect that more enlarges with regard to front and rear wheel, not only can use for the user of different builds, simultaneously, also can when bicycle does not use, reach and dwindle the effect that takes up room.

In other words, please cooperate shown in Figure 6, utilize front rod 81, rear linking rod 82 can in forward and backward swing, enlarge the wheelspan adjusting range of front-wheel 2, trailing wheel 3, when then bicycle is not running condition, the user is as long as be pushed into the limit forward with seat cushion 6 so that trailing wheel 3 moves forward to foremost, and will contract in seat cushion 6, the handle 7, down bending, naturally, can reach dwindling of expection and take up room, be convenient to collect, carry the purpose of transporting.

Claims (4)

1, a kind of bicycle of adjusting wheelspan, it is provided with a vehicle frame, vehicle frame has on one pipe, on manage front end and be connected with preceding pipe, handle is equipped with in the upper end of preceding pipe, front fork is equipped with in the lower end, front-wheel is equipped with at the place at front fork; Vehicle frame below is provided with the five-way pipe, and the five-way pipe is connected with pole, and the five-way pipe also fixes as one with back vent, a seat pipe, is equipped with on the five-way pipe and tramples driven unit, and back vent is equipped with trailing wheel, on the seat pipe seat cushion is housed; It is characterized in that: also being equipped with on the vehicle frame can forward and backward swing and comprise the linkage rod group of front rod, rear linking rod at least, one end of this front rod, rear linking rod articulates the forward and backward two ends that are positioned pipe respectively versatilely, and the other end articulates five-way pipe pole and the back vent place that is positioned to fix as one respectively versatilely; The adjacent upper end of seat pipe is moving type ground by holding pipe, and the seat pipe is locked locatees in that latch components is being housed by the place of holding; During the synchronous forward and backward swing of the front rod of this linkage rod group, rear linking rod, the five-way pipe that fixes as one, five-way pipe pole, seat pipe, back vent and trample the synchronous forward and backward displacement adjustment of driven unit, seat cushion and trailing wheel.

2, the bicycle of adjusting wheelspan as claimed in claim 1 is characterized in that: this latch components is the screw locked assembly.

3, the bicycle of adjusting wheelspan as claimed in claim 1 is characterized in that: this latch components is the clamping assembly.

4, the bicycle of adjusting wheelspan as claimed in claim 1 is characterized in that: this latch components is the solid assembly of button.

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