CN205239807U

CN205239807U - Foldable bicycle frame

Info

Publication number: CN205239807U
Application number: CN201521112191.7U
Authority: CN
Inventors: 金宙渊
Original assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Current assignee: TIANJIN PROMADE SPORTS MACHINE Co Ltd
Priority date: 2015-12-25
Filing date: 2015-12-25
Publication date: 2016-05-18
Anticipated expiration: 2025-12-25

Abstract

The utility model relates to a technical field is made to the bicycle, especially relates to a foldable bicycle frame, including top tube, low tube, well pipe, rear vertical fork, back chain stay, the top tube mainly comprises the first top tube of mutual articulated and second top tube two parts, is equipped with the hasp in articulated department, the hasp is including the handle, hinge and the locating pin that have the eccentric wheel, the axle sleeve welding is in on the first top tube, reset spring has been cup jointed on the locating pin, the locating pin lower part with fix locating hole cooperation on the second top tube, the handle articulates on the first top tube, the eccentric wheel with fix location cap cooperation on the locating pin. This device adopts unique hasp structure, can fix a position mutual articulated top tube two parts through the locating pin, owing to set for a reset spring for the locating pin is pushing up the eccentric wheel of handle all the time, uses so how long the handle can not become flexible, has guaranteed the fastness of top tube, has improved the safety of riding passerby.

Description

Folding bicycle frame

Technical field

The utility model relates to bicycle manufacturing technology field, relates in particular to a kind of folding bicycle frame.

Background technology

Bicycle has been dissolved into as the vehicles in people's life, along with the change of people life style, the various bicycles with certain specific use that obtain that improve taking bicycle as basis enter in our life gradually, for example for the mountain bike of body-building, for improving derailleur of speed etc. Bicycle is mainly made up of body part, running part, undercarriage and safety device, can increase as required some annexes, the parts such as such as shelf, support and bicycle basket. Body part is mainly made up of vehicle frame, front fork, handlebar, saddle dish and front forked assembly etc., frame part is the basic structure body that forms bicycle, also be skeleton and the main body of bicycle, miscellaneous part is to be all also directly or indirectly arranged on vehicle frame, and vehicle frame comprises seat tube, down tube, center pillar, back vent and vertical fork etc. Safety device mainly refers to brake, i.e. brake, and brake is the important device that ensures bicyclist's personal safety. At present, folding bicycle has the light advantage of being convenient to place and has obtained increasing consumer and like, at present the folding mode of folding bicycle is varied, locked by a buckle under non-folded situation, this buckle structure is fairly simple, under long-time service condition, easily causes folding position loosening, and buckle is loosening, cause vehicle structure built on the sand, affect riding safety.

Utility model content

The purpose of this utility model is to overcome the deficiency of above-mentioned technology, and a kind of folding bicycle frame is provided, and under long-time service condition, snap close is difficult for loosening, ensures riding safety.

The utility model for achieving the above object, by the following technical solutions:

A kind of folding bicycle frame, it is characterized in that: comprise pipe, lower pipe, middle pipe, rear stays, rear chain stay, the afterbody of described upper pipe and the welding of the middle part of described middle pipe, the top of described middle pipe is connected with the top of described rear stays, described rear stays and rear chain stay link together by rear pintle, the front end of described rear chain stay is connected with the bottom of described middle pipe, between the bottom of described middle pipe and the bottom of lower pipe, is fixed with five-way, described upper pipe mainly by be hinged first on pipe and second on pipe two parts form, be provided with snap close in hinged place, described snap close comprises with eccentric handle, hinge and alignment pin, on described first, on pipe and second, pipe is hinged by described hinge, described alignment pin is arranged in axle sleeve, described axle sleeve is welded on described first on pipe, on described alignment pin, be socketed with back-moving spring, described alignment pin bottom be fixed on the locating hole on pipe on described second and coordinate, described handle is hinged on described first on pipe, described eccentric wheel coordinates with the positioning cap being fixed on described alignment pin. with respect to prior art, this device adopts unique buckle structure, the upper pipe two parts that are hinged can be positioned by alignment pin, owing to setting a back-moving spring, make alignment pin head on all the time the eccentric wheel of handle, use so how long handle can not become flexible, ensured the fastness of upper pipe, improved bicyclist's safety, it is upper that five-way is mainly welded lower pipe by this device again, can promote the stability of vehicle frame.

Preferably, on described hinge, be socketed with torsion spring. A torsion spring is set, opening after snap close, pipe bending automatically under the elastic force of torsion spring on pipe and second on first, two parts of vehicle frame are combined automatically, in the situation that can effectively prevent from placing, vehicle frame scatters, on the other hand, and the in the situation that on first, on pipe and second, pipe being fixing by snap close, can there is individual external force to support the two, more firm.

Preferably, between described five-way and described middle pipe, be welded with stiffener. The bottom of fixing five-way.

Preferably, described rear stays is provided with brace, on described brace with connecting hole. Brace is used for connecting rear brake.

Preferably, on described upper pipe, lower pipe and rear chain stay, be respectively equipped with line card. For fixing brake line.

Preferably, described hinge is 45 ° of-60 ° of angles and is arranged on described first on pipe and second between pipe. Hinge is obliquely installed, and can be convenient to alignment pin and fix, and makes on pipe and second, to manage on first fixing more firm.

The beneficial effects of the utility model are: with respect to prior art, this device adopts unique buckle structure, the upper pipe two parts that are hinged can be positioned by alignment pin, owing to setting a back-moving spring, make alignment pin head on all the time the eccentric wheel of handle, use so how long handle can not become flexible, ensured the fastness of upper pipe, improved bicyclist's safety; It is upper that five-way is mainly welded lower pipe by this device again, can promote the stability of vehicle frame.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Describe detailed description of the invention of the present utility model in detail below in conjunction with accompanying drawing and preferred embodiment. As shown in Figure 1, a kind of folding bicycle frame, comprise pipe 1, lower pipe 2, middle pipe 3, rear stays 4, rear chain stay 5, the afterbody of described upper pipe and the welding of the middle part of described middle pipe, the top of described middle pipe is connected with the top of described rear stays, described rear stays and rear chain stay link together by rear pintle 6, and the front end of described rear chain stay is connected with the bottom of described middle pipe, between the bottom of described middle pipe and the bottom of lower pipe, are fixed with five-way 7; Described upper pipe mainly by be hinged first on manage and on 8 and second, manage 9 two parts and form, be provided with snap close in hinged place, described snap close comprises with eccentric handle 10, hinge 11 and alignment pin 12, on described first, on pipe and second, pipe is hinged by described hinge, vehicle frame just can rotate like this, described alignment pin is arranged in axle sleeve 13, described axle sleeve is welded on described first on pipe, on described alignment pin, be socketed with back-moving spring 14, back-moving spring makes alignment pin outwards have an elastic force all the time, makes alignment pin contact all the time eccentric wheel. Described alignment pin bottom be fixed on the locating hole 15 on pipe on described second and coordinate, in the time moving handle, handle band movable eccentric wheel rotates, eccentric wheel compresses compressing positioning pin, alignment pin enters into locating hole. Described handle is hinged on described first and manages, and described eccentric wheel coordinates with the positioning cap 16 being fixed on described alignment pin. With respect to prior art, this device adopts unique buckle structure, the upper pipe two parts that are hinged can be positioned by alignment pin, owing to setting a back-moving spring, make alignment pin head on all the time the eccentric wheel of handle, use so how long handle can not become flexible, ensured the fastness of upper pipe, improved bicyclist's safety; It is upper that five-way is mainly welded lower pipe by this device again, can promote the stability of vehicle frame.

On described hinge, be socketed with torsion spring 17. A torsion spring is set, opening after snap close, pipe bending automatically under the elastic force of torsion spring on pipe and second on first, two parts of vehicle frame are combined automatically, in the situation that can effectively prevent from placing, vehicle frame scatters, on the other hand, and the in the situation that on first, on pipe and second, pipe being fixing by snap close, can there is individual external force to support the two, more firm.

Between described five-way and described middle pipe, be welded with stiffener 18. The bottom of fixing five-way. Described rear stays is provided with brace 19, on described brace with connecting hole. Brace is used for connecting rear brake. On described upper pipe, lower pipe and rear chain stay, be respectively equipped with line card 20. For fixing brake line. Described hinge is 45 ° of-60 ° of angles and is arranged on described first on pipe and second between pipe. Hinge is obliquely installed, and can be convenient to alignment pin and fix, and makes on pipe and second, to manage on first fixing more firm.

As further improvement of the utility model, described rear pintle upper shed is towards five-way. Like this, pintle hauls trailing wheel all the time, can prevent that trailing wheel from coming off.

This device adopts unique buckle structure, the upper pipe two parts that are hinged can be positioned by alignment pin, owing to setting a back-moving spring, make alignment pin head on all the time the eccentric wheel of handle, use so how long handle can not become flexible, ensure the fastness of upper pipe, improved bicyclist's safety; It is upper that five-way is mainly welded lower pipe by this device again, can promote the stability of vehicle frame.

The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a folding bicycle frame, it is characterized in that: comprise pipe, lower pipe, middle pipe, rear stays, rear chain stay, the afterbody of described upper pipe and the welding of the middle part of described middle pipe, the top of described middle pipe is connected with the top of described rear stays, described rear stays and rear chain stay link together by rear pintle, the front end of described rear chain stay is connected with the bottom of described middle pipe, between the bottom of described middle pipe and the bottom of lower pipe, is fixed with five-way, described upper pipe mainly by be hinged first on pipe and second on pipe two parts form, be provided with snap close in hinged place, described snap close comprises with eccentric handle, hinge and alignment pin, on described first, on pipe and second, pipe is hinged by described hinge, described alignment pin is arranged in axle sleeve, described axle sleeve is welded on described first on pipe, on described alignment pin, be socketed with back-moving spring, described alignment pin bottom be fixed on the locating hole on pipe on described second and coordinate, described handle is hinged on described first on pipe, described eccentric wheel coordinates with the positioning cap being fixed on described alignment pin.

2. folding bicycle frame according to claim 1, is characterized in that: on described hinge, be socketed with torsion spring.

3. folding bicycle frame according to claim 1, is characterized in that: between described five-way and described middle pipe, be welded with stiffener.

4. folding bicycle frame according to claim 1, is characterized in that: described rear stays is provided with brace, on described brace with connecting hole.

5. folding bicycle frame according to claim 1, is characterized in that: on described upper pipe, lower pipe and rear chain stay, be respectively equipped with line card.

6. folding bicycle frame according to claim 1, is characterized in that: described hinge is 45 ° of-60 ° of angles and is arranged on described first on pipe and second between pipe.