CN201863959U - Folding bicycle frame - Google Patents

Abstract

The utility model is a folding bicycle frame, comprising a rear leg rotating shaft, a front frame and a front bicycle head. The rear leg rotating shaft has a rear leg and a rotating shaft portion connected to the front of the rear leg. The front bicycle frame is arranged above the rear leg rotating shaft, and the front bicycle frame has a pivot tube, which is rotatably arranged in the rotating shaft portion so that the front bicycle frame can rotate relative to the rear leg. The front bicycle head is provided with a quick positioning device, which can be quickly arranged at the front end top of the front bicycle frame. In this way, the rear leg and the front bicycle frame can be quickly folded against each other, and the front bicycle head can also be quickly unloaded and assembled. This greatly shortens the folding time and improves the convenience during use.

Description

folding bike rack

technical field

The utility model relates to a technology of a folding bicycle frame, especially a folding bicycle which utilizes the arrangement of components such as a rotating shaft part and a quick-release tube bundle to greatly reduce the folding time and shrink the volume after folding, and can further reduce the manufacturing cost. shelf.

Background technique

In recent years, with the increasing awareness of environmental protection, the concept of energy saving and carbon saving has gradually been implemented in daily life, and modern people attach importance to leisure activities and physical health, so more and more people use bicycles as a means of transportation or It is a tool for fitness and leisure. Bicycles can not only replace other means of transportation, but also avoid the impact and damage to the environment caused by the exhaust gas produced by ordinary means of transportation. There is more than one bicycle.

Due to the large size of the bicycle, if you want to go out and use it, you must install the bicycle on the rear or top of the vehicle, but the installation is not only time-consuming and may scratch the metal surface of the vehicle, and if you install the bicycle on the rear or top of the vehicle, if it is not stable It is easy to loosen or fall off during the journey, affecting the smooth driving, and even causing traffic accidents.

In order to make it easier to store and carry bicycles, there are many different types of folding bicycle racks on the market. The main appeal is to fold and reduce the size of bicycles so that they can be carried outside. The traditional folding bicycle frame structure all is to utilize folding box and connecting rod or latch to fold the vehicle frame in half from the middle, so that the front wheel and rear wheel are close together, and the front of the bike also uses the folding box and connecting rod to fold the front riser in half. However, the folding box of this prior art is unsightly, and the connecting rod inside the folding box is prone to failure, and the maintenance is not easy. Moreover, the welding part of the folding box is also easy to break. In addition, the folding box can only be folded in a fixed direction, so it is inconvenient to use. Moreover, after the front of the car is folded, it takes more time to adjust the angle of the front of the car when it is reassembled, resulting in reduced practicability.

Therefore, how to create a foldable bicycle rack, which not only has a simple overall structure, but also saves folding time, improves the convenience of use, reduces manufacturing costs and prolongs the service life, will be actively disclosed by the utility model. place.

Utility model content

The main purpose of the utility model is to provide a folding bicycle rack, which can be quickly rotated clockwise or counterclockwise through the rotating shaft part and the quick release tube bundle, so as to greatly reduce the folding time and improve the practicality.

Another object of the present invention is to provide a foldable bicycle frame. The front of the bicycle is equipped with a quick positioning device, which can be quickly folded and positioned to avoid wasting assembly time.

Another purpose of the utility model is to provide a foldable bicycle rack with a simple overall structure, which can prolong the service life and reduce the manufacturing cost.

To achieve the above purpose, the utility model provides a foldable bicycle frame, which includes a rear foot frame rotating shaft, a front frame and a bike head. The rear foot frame rotating shaft has a rear foot frame and a rotating shaft portion connected to the front of the rear foot frame, and the rear foot frame is provided with a rear wheel. The front frame is arranged above the rotating shaft of the rear foot frame, and the front frame has a pivot tube, which is rotatably arranged in the shaft part, so that the front frame can rotate relative to the rear foot frame, and the end of the front frame is provided with an upper The quick release tube bundle and the lower quick release tube bundle, the lower quick release tube bundle is fixed on the top of the rear tripod, the upper quick release tube bundle fixes a pad bar, and the front frame is provided with a front wheel. The front is equipped with a quick positioning device, so that it can be quickly detached and assembled on the top of the front frame.

In a preferred embodiment, the quick positioning device includes a quick positioning tube bundle and a positioning protrusion arranged on the inner side of the vehicle head. The upper end and the lower end of the quick positioning tube bundle are respectively provided with a plurality of upper grooves and lower grooves, and the top of the positioning projection is provided with a plurality of protrusions, so that the grooves and the protrusions cooperate with each other.

Compared with the prior art, the foldable bicycle frame of the present invention mainly enables the rear foot frame to rotate clockwise or counterclockwise through the arrangement of the rotating shaft and the upper and lower fast tube bundles for fast folding. The same front part can be quickly separated and stored through the quick positioning tube bundle. When reassembling, it can be quickly and correctly positioned through the grooves and positioning bumps, shortening the adjustment time of the front and improving the overall practicality. Furthermore, the overall structure is simple and the structure is not easily damaged, so the service life can be extended and the manufacturing cost can be reduced.

Description of drawings

Fig. 1 is the three-dimensional assembly diagram of a preferred embodiment of the utility model folding bicycle frame;

Figure 2 is an exploded perspective view of a preferred embodiment of the utility model folding bicycle frame; and

Fig. 3 is a reference diagram of the use state of a preferred embodiment of the folding bicycle frame of the present invention.

Explanation of reference signs

1-----folding bike rack

11---- Rear tripod shaft

110---Rotating shaft

111---Rear stand

112---Security screw

12----Front frame

120---pivot

121---Upper quick release tube bundle

122---Lower quick release tube bundle

123---seat post

124---seat cushion

13 ---- front

130---Quick positioning device

131---Quick positioning tube bundle

1311--upper groove

1312--The lower groove

132---Positioning bump

1321--Convex

Detailed ways

The implementation of the present utility model is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

The embodiments of the present utility model are described below with reference to the drawings. It should be noted that the following drawings are simplified schematic diagrams, and only illustrate the basic idea of the present utility model in a schematic manner, but only illustrate the utility model related to the drawings. The structure is not drawn according to the number, shape and size of the components in actual implementation. The type, quantity and proportion of each component in actual implementation are not limited to those shown in the illustration, and can be changed according to actual design needs, which are described first.

First of all, please refer to Figures 1 and 2, which are a three-dimensional assembly view and a three-dimensional exploded view of a preferred embodiment of the folding bicycle rack of the present invention. As shown in the figure, the folding bicycle frame 1 of the present invention includes a rear foot frame rotating shaft 11 , a front frame 12 and a bike head 13 .

The rear foot frame rotating shaft 11 has a rear foot frame 111 and a shaft portion 110 connected to the front of the rear foot frame 111. The rear foot frame 111 is used for setting a rear wheel (not shown). Moreover, a safety screw 112 is provided on the bottom of the rotating shaft portion 110 .

Front vehicle frame 12 is arranged on the top of rear foot frame rotating shaft 11, and front vehicle frame 12 has a pivot tube 120, and pivot tube 120 is arranged in the shaft portion 110 in a rotatable manner, so that front vehicle frame 12 can rotate relative to rear foot frame 111, And the end of the front frame 12 is provided with an upper quick release tube bundle 121 and a lower quick release tube bundle 122, the lower quick release tube bundle 122 is fixed on the top of the rear foot frame 111, the upper quick release tube bundle 121 fixes a pad bar 123, and the seat post The top of 123 is provided with a pad 124 . And front vehicle frame 12 is used for setting front wheel (not shown in the figure).

The headstock 13 is provided with a quick positioning device 130 , and the quick positioning device 130 includes a quick positioning tube bundle 131 and a positioning protrusion 132 disposed on the inner side of the headstock. The upper end and the lower end of the quick positioning tube bundle 131 are respectively provided with a plurality of upper grooves 1311 and lower grooves 1312, and the top of the positioning protrusion 132 is provided with a plurality of protrusions 1321, so that the upper grooves 1311 and the lower grooves 1312 can be connected with the protrusions respectively. 1321 cooperate with each other. The positioning projection 132 is locked on the front frame 12 so that the headstock 13 can be positioned on the front frame 12 at an external speed.

Please refer to FIG. 3 , which is a reference diagram of a preferred embodiment of the folding bicycle frame of the present invention. As shown in the figure, when folding, the upper quick-release tube bundle 121 is first released to make the seat rod 123 Pull out the front frame 12 together with the seat cushion 124, and then loosen the lower quick release tube bundle 122, so that the rear frame shaft 11 can rotate clockwise or counterclockwise around the shaft part 110 until it is close to the front frame 12 , that is to complete the overall folding, so the folding is convenient and fast. If the front end 13 is to be disassembled, it is only necessary to loosen the quick positioning tube bundle 131, and then the front end 13 can be separated from the front frame 12.

When assembling, rotate the rear frame rotating shaft 11 clockwise or counterclockwise around the rotating shaft part 110 until it is flattened, then lock the lower quick-release tube bundle 122, and then connect the seat rod 123 together with the seat Insert the pad 124 into the top of the front frame 12, then lock the upper quick-release tube bundle 121, and finally align the lower groove 1312 at the bottom of the headstock 13 with the positioning bump 132 for quick positioning, and then lock the quick-positioning tube bundle 131 of the headstock 13 Tight, you can fix the headstock 13, and complete the overall assembly. In addition, since the headstock 13 is provided with an upper groove 1311, the headstock 13 can also be turned over for use so that the upper groove 1311 is aligned with the positioning protrusion 132 for installation, thus changing the angle of the headstock 13.

Compared with the existing structure, the folding bicycle frame of the present invention mainly uses the arrangement and cooperation of the rotating shaft and a plurality of quick-release tube bundles to achieve the effect of fast folding and fast assembly, so that users can avoid getting dirty when folding Both hands can shorten the folding time and improve the convenience of use. Moreover, the folded volume is significantly reduced, and it can be directly installed inside the vehicle to carry it out for use without taking up too much space in the vehicle. Furthermore, the overall structure is simple, the structure is not easily damaged, the service life can be extended and the manufacturing cost can be reduced.

Although the foregoing description and drawings have disclosed preferred embodiments of the present utility model, it must be understood that various additions, many modifications and substitutions may be used in the preferred embodiments of the present utility model without departing from the claims defined in the application. The spirit and scope of the utility model principle. Those of ordinary skill in the art to which the invention pertains will appreciate that the invention can be employed with many modifications in form, structure, arrangement, proportion, material, element and assembly. Therefore, the embodiments disclosed herein should be regarded as illustrating the utility model rather than limiting the utility model. The scope of the present invention should be defined by the claims of this application, including their legal equivalents, and not limited by the foregoing description.

Claims (8)

1. folding bicycle frame is characterized in that comprising:

One rear leg rotating shaft has a rear leg and is connected in the shaft in this rear leg the place ahead;

One front vehicle frame, be arranged at the top of this rear leg rotating shaft, this front vehicle frame has a pivot pipe, this pivot pipe is arranged in this shaft in rotating mode, this front vehicle frame can be rotated relative to this rear leg, and the end of this front vehicle frame is provided with quick detach tube bank and quick detach tube bank down, and the tube bank of this time quick detach is fixed on the top of this rear leg, and a seat cushion bar is fixed in quick detach tube bank on this; And

One headstock is arranged at the front top of this front vehicle frame, and this headstock is provided with fast-positioning device, can break away from and be assembled in this front vehicle frame top fast.

2. folding bicycle frame as claimed in claim 1 is characterized in that this fast-positioning device comprises a tube bank of quick location and a location projection of being located at the headstock inboard.

3. folding bicycle frame as claimed in claim 2, the upper end and the lower end of location tube bank are respectively equipped with plural upper groove and low groove fast to it is characterized in that this, this locating convex block top is provided with plural protuberance, can cooperatively interact with this protuberance respectively to make this upper groove, low groove.

4. folding bicycle frame as claimed in claim 2 is characterized in that this locating convex block is locked on this front vehicle frame, and this headstock can be positioned on this front vehicle frame fast.

5. folding bicycle frame as claimed in claim 1 is characterized in that the top of this seat cushion bar is provided with a seat cushion.

6. folding bicycle frame as claimed in claim 1 is characterized in that this shaft bottom is provided with a safety set screw.

7. folding bicycle frame as claimed in claim 1 is characterized in that this rear leg is in order to be provided with a rear wheel.

8. folding bicycle frame as claimed in claim 1 is characterized in that this front vehicle frame is provided with a front vehicle wheel.

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