CN203345129U

CN203345129U - Bicycle frame

Info

Publication number: CN203345129U
Application number: CN 201320341968
Authority: CN
Inventors: 吴家明
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-14
Filing date: 2013-06-14
Publication date: 2013-12-18
Anticipated expiration: 2023-06-14

Abstract

The utility model discloses a bicycle frame. The bicycle frame comprises a frame body, wherein the frame body comprises a front fork pipe, an upper beam and a lower beam, the upper beam and the lower beam are connected with the front fork pipe and a saddle pipe, the rear portion of the upper beam is provided with a first bending portion, the rear portion of the lower beam is provided with a second bending portion, the first bending portion is connected with the second bending portion, and a rear fork is connected to the tail ends of the bending portions. Two symmetrical semi-frames are combined to form the frame body, the left semi-frame and the right semi-frame are made of engineering plastic through integral injection molding, and the left semi-frame is connected with the right semi-frame into a whole through plastic welding. The bicycle frame is novel in structure, attractive in appearance, convenient to manufacture and produce, light in weight and high in strength.

Description

A kind of cycle frame

Technical field

The utility model relates to technical field of bicycles, specifically a kind of cycle frame.

Background technology

At present, people's bicycle used in everyday or battery-driven car all have metallic material to make usually, these bicycles exist car body heavy, perishable, the high cost deficiency, particularly between pipe support, adopt welding manner to be connected, and welding person will have enough experiences to weld, therefore can affect the stability of product design, and affect attractive in appearance.

The utility model content

Technical problem to be solved in the utility model be to provide a kind of novel structure, handsome in appearance, be convenient to manufacture to produce, lightweight, the cycle frame that intensity is large.

To achieve these goals, the utility model provides a kind of technical scheme of cycle frame, comprise main body of vehicle frame, main body of vehicle frame comprises front fork tube, the upper beam be connected with front fork tube and underbeam, upper beam all is connected with the seat pipe with underbeam, described upper beam rear portion is provided with the first kink, the underbeam rear portion is provided with the second kink, the first kink is connected with the second kink, described the first kink and the second kink junction also are provided with back vent, described main body of vehicle frame is that symmetrical half vehicle frame in left and right two combines, left semi-frame and right semi-frame are respectively by the engineering-plastics integral injection mo(u)lding, between left semi-frame and right semi-frame, by plastic welding, link into an integrated entity.

Above-mentioned cycle frame, wherein, described front fork tube, upper beam, seat pipe, back vent and the second kink inwall are provided with reinforced rib.

Above-mentioned cycle frame, wherein, described upper beam is reclinate arc.

Above-mentioned cycle frame, wherein, what described underbeam was K/UP is arc.

Above-mentioned cycle frame, wherein, described the first kink comprises the first crooked laterally outer kink one and the first time kink bent downwards.

Above-mentioned cycle frame, wherein, described the second kink comprises the second crooked laterally outer kink and the second time kink bent downwards.

The beneficial effects of the utility model are: novel structure, handsome in appearance, be convenient to manufacture to produce, lightweight, intensity is large.

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.

The accompanying drawing explanation

Fig. 1 is the utility model cycle frame exploded view;

Fig. 2 is the utility model bicycle frame structure schematic diagram;

Fig. 3 is that the utility model cycle frame is used state reference map.

Wherein, Reference numeral

1, front fork tube;

2, upper beam;

2.1, the first kink;

2.11, the first outer kink;

2.12, first time kink;

3, underbeam;

3.1, the second kink;

3.11, the second outer kink;

3. second time kink;

4, seat pipe;

5, back vent;

6, reinforced rib.

The specific embodiment

Below in conjunction with accompanying drawing, structural principle of the present utility model and principle of work are described in detail: as shown in Fig. 1～2, the utility model cycle frame, comprise main body of vehicle frame, main body of vehicle frame comprises front fork tube 1, the upper beam 2 be connected with front fork tube and underbeam 3, upper beam 2 all is connected with seat pipe 4 with underbeam 3, the upper beam rear portion is provided with the first kink 21, underbeam 3 rear portions are provided with the second kink 31, the first kink 21 is connected with the second kink 31, described the first kink 21 and the second kink 31 junctions also are provided with back vent 5, described main body of vehicle frame is that symmetrical half vehicle frame in left and right two combines, left semi-frame and right semi-frame are respectively by the engineering-plastics integral injection mo(u)lding, between left semi-frame and right semi-frame, by plastic welding, link into an integrated entity.

Front fork tube 1, upper beam 2, seat pipe 4, back vent 5 and the second kink 31 inwalls are provided with reinforced rib 6, have strengthened the intensity of unitized frame.

Upper beam 2 is reclinate arc, and what underbeam 3 was K/UP is arc, and design is also in order to improve frame strength like this, and while integral body is streamline more, makes vehicle frame more attractive in appearance.

The first kink 21 comprises the first crooked laterally outer kink 211 1 and the first time kink 212 bent downwards.

The second kink 31 comprises the second crooked laterally outer kink 311 and the second time kink 312 bent downwards.

Setting due to the first kink 21 and the second kink 31, make left semi-frame, right semi-frame form respectively symmetrical left back fork and right back fork, by the plastic welding to left and right two symmetrical semi-frames, make that unitized frame is attractive in appearance, intensity is large, while is because of the existence of the first kink 21 and the second kink 31, plastic welding not between the kink of two symmetries and back vent, and left the space that trailing wheel is installed between the left and right kink of symmetry and left and right back vent.

As shown in Figure 3, our design of the pedal center shaft assembly of the utility model cycle frame be changeable type pedal center shaft assembly, use to adapt to without the Electrical Bicycle of pedal center shaft, or change as required dissimilar pedal center shaft assembly.

Because the utility model adopts plastic welding technique, whole non junction, so can reach integral body streamline more, smooth characteristics attractive in appearance.

Certainly; the utility model also can have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims

1. a cycle frame, comprise main body of vehicle frame, main body of vehicle frame comprises front fork tube, the upper beam be connected with front fork tube and underbeam, upper beam all is connected with the seat pipe with underbeam, it is characterized in that, described upper beam rear portion is provided with the first kink, the underbeam rear portion is provided with the second kink, the first kink is connected with the second kink, described the first kink and the second kink junction also are provided with back vent, described main body of vehicle frame is that symmetrical half vehicle frame in left and right two combines, left semi-frame and right semi-frame are respectively by the engineering-plastics integral injection mo(u)lding, between left semi-frame and right semi-frame, by plastic welding, link into an integrated entity.

2. cycle frame as claimed in claim 1, is characterized in that, described front fork tube, upper beam, seat pipe, back vent and the second kink inwall are provided with reinforced rib.

3. cycle frame as claimed in claim 1, is characterized in that, described upper beam is reclinate arc.

4. cycle frame as claimed in claim 1, is characterized in that, what described underbeam was K/UP is arc.

5. cycle frame as claimed in claim 1, is characterized in that, described the first kink comprises the first crooked laterally outer kink one and the first time kink bent downwards.

6. cycle frame as claimed in claim 1, is characterized in that, described the second kink comprises the second crooked laterally outer kink and the second time kink bent downwards.