JP3076822U - Bicycle frame pipe structure - Google Patents

Abstract

(57) [Problem] To provide a bicycle frame pipe structure capable of concealing a cable through a guide tube provided on an inner peripheral wall of a frame, improving the appearance of the bicycle, and increasing the selling price in the market. . SOLUTION: At least one C-shaped guide tube (41) is provided along an inner peripheral wall axis of a frame pipe (40), and at least both through holes (42, 43) are drilled in the frame pipe (40) at each part. The two through holes (42, 43) communicate with each other with the C-shaped guide tube (41), and the steel wire (301) is inserted through one of the through holes (42) to the C-shaped guide tube (41). Then, the steel wire (301) is extended from the other through hole (43) so that the steel wire (301) can be concealed in the frame pipe (40).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a bicycle, and more particularly to a bicycle frame pipe structure having a guide tube therein, which can enhance the appearance of the bicycle and enhance its market value.

[0002]

[Prior art]

 By the way, as shown in FIG. 4, the front and rear wheel brake cables 11, 12 and the front and rear gear cables 13, 14 of the conventional bicycle 10 are all fixed through through holes 200 in the outer wall of the frame pipe 20. After the front wheel brake cable 11 is inserted through the brake handle 15, the handlebar stem 21 of the frame pipe 20 is connected to the front wheel brake 201, and the rear wheel brake cable 12 is inserted through another brake handle 16. Then, the top tube 22 and the seat stay 23 of the frame pipe 20 are connected to the rear wheel brake 202. The front gear cable 13 is inserted through the front transmission lever 17 and connected to the front transmission 203 through the down tube 24 and the seat tube 25 of the frame pipe 20, and the rear gear cable 14 is inserted through the rear transmission lever 18. And the down tube 24 and the chain stay 26 of the frame pipe 20 are connected to the rear transmission 204. The functions of the front and rear wheel brake cables 11 and 12 and the front and rear gear cables 13 and 14 are for connecting both corresponding devices, for example, the front transmission 203 and the front transmission lever 17, and this function is used for braking and shifting. Although the effects can be achieved, there are still the following problems in practice.

[0003] 1. The front and rear wheel brake cables 11, 12 and the front and rear gear cables 13, 14 are exposed to the outer surface of the frame pipe, so that the entire appearance is poor and the value of the bicycle is impaired.

The front and rear wheel brake cables 11 and 12 and the front and rear gear cables 13 and 14 are scattered and scattered in front of the handle stem 21 of the frame pipe 20 due to assembly and arrangement. Is dangerous because it is easy to snag on obstacles while riding

[0005]

[Problems to be solved by the invention]

 In view of the problem of gripping the front and rear wheel brake cables and the front and rear gear cables in the conventional bicycle described above, the present invention provides a bicycle that can conceal such cables by passing them through a guide tube provided on the inner peripheral wall of the frame. It is an object of the present invention to provide a bicycle frame pipe structure that can improve the appearance of the bicycle and increase the selling price in the market.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides at least one C-shaped guide tube along the axis of the inner peripheral wall of the frame pipe, and drills at least both through-holes in the frame pipe at each part. Communicates with the C-shaped guide tube, allows the steel wire to penetrate through one of the through-holes, passes through the C-shaped guide tube, and extends from the other through-hole, so that the steel wire can be concealed in the frame pipe. Be composed.

The frame pipe includes a top tube, a seat stay, a seat tube, a down tube, and a chain stay, and the steel wire includes a front and rear gear cable and a front and rear wheel brake cable. It is more preferable to set to.

In the present invention configured as described above, the front and rear gear cables and the rear wheel brake cables are passed through the C-shaped guide tubes of the bicycle frame pipe, and the front and rear transmissions and the rear wheel brakes are respectively connected. The front wheel brake cable can be connected to the front wheel brake by extending the front wheel brake cable near the handle stem and the head tube side of the frame pipe, and most steel wires can be concealed in the frame pipe. The appearance of the entire vehicle can be improved.

[0009]

[Embodiment of the invention]

 Hereinafter, the present invention will be specifically described based on embodiments, but the present invention is not limited to only this example.

As shown in FIGS. 1 and 2, a bicycle frame pipe structure according to a relatively preferred embodiment of the present invention can incorporate various bicycle cables 30 into a bicycle frame pipe 40, and the cables 30 are steel wires 301. Is formed by wrapping it in a one-layer covering sleeve 302. At least one C-shaped guide tube 41 is provided along the axis on the inner peripheral wall of the frame pipe 40, and at least two through holes 42 and 43 (almost elliptical holes in this embodiment) are formed in the frame pipe 40 at each part. The through-holes 42 and 43 communicate with the C-shaped guide tube 41, and the steel wire 301 of the cable 30 is inserted into the C-shaped guide tube 41 so that both ends are inserted into the through-holes 42 and 43. Extend more. The inner diameter of the C-shaped guide tube 41 is formed slightly larger than the outer diameter of the steel wire 301 so that the steel wire 301 of the cable 30 can pass through the C-shaped guide tube 41.

The above is a description of the structure, features and positioning of the preferred embodiment of the present invention, and the actual assembling and use conditions are as follows. First, as shown in FIG. 3, the cable 30 includes front and rear gear cables 31 and 32 and front and rear wheel brake cables 33 and 34, and the front gear cable 31 passes through the front shift lever 51 of the bicycle 50. After the insertion, the handle tube 401 and the head tube 402 of the frame pipe 40 are pulled through the C-shaped guide tube 41 of the down tube 403 of the frame pipe 40 through the tension control of the handle tube 401, and then passed through the sheet tube 404. The rear gear cable 32 is connected to the front transmission 52, and the rear gear cable 32 extends through the rear transmission lever 53, and then controls the pulling of the handle stem 401 and the head tube 402 of the frame pipe 40, thereby controlling the frame pipe 40. Through the down tube 403 and the C-shaped guide tube 41 of the chain stay 405, and finally connected to the rear transmission 54. On the other hand, the front wheel brake cable 33 penetrates and extends from the brake handle 55, and then extends toward the handle stem 401 and the head tube 402 side of the frame pipe 40, and is connected to the front wheel brake 56. 34 inserts and extends another brake handle 57, and then controls the tension of the handle stem 401 and the head tube 402 of the frame pipe 40 to move the inside of the C-shaped guide tube 41 of the top tube 406 of the frame pipe 40. Then, the seat stay 407 is connected to the rear wheel brake 58 through the seat stay 407. That is, since the steel wire 301 can be concealed in the frame pipe 40 by the C-shaped guide tube 41, the appearance of the entire bicycle 50 can be improved, and the industrial competitiveness can be increased.

Further, when the steel wire 301 is passed through the C-shaped guide tube 41 of the frame pipe 40, an appropriate length is extended from the frame pipe 40 as necessary, so that the front and rear wheel brakes are provided. Also, the convenience of connection with the front and rear transmissions can be maintained.

[0013]

[Effect of the invention]

 The present invention configured as described above has the following advantages and effects.

1. Since the front and rear gear cables 31, 32 and the rear wheel brake cable 34 are both concealed by the C-shaped guide tube 41 of the frame pipe 40, the appearance of the bicycle 50 as a whole and the value of the product are enhanced. Thus, the competitiveness in industry can be improved.

2. When the front and rear gear cables 31 and 32 and the rear wheel brake cable 34 are inserted and assembled, the tension can be controlled so as to maintain a predetermined degree of tension, so that the front and rear gear cables 31 and 32 are scattered in front of the handle stem 401 of the frame pipe 40. Therefore, when the bicycle 50 is mounted, the cable does not catch on an obstacle.

[Brief description of the drawings]

FIG. 1 is a partial side sectional view of a frame pipe according to a preferred embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a side view of the embodiment.

FIG. 4 is a side view of a conventional bicycle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 30 Cable 301 Steel wire 302 Coating sleeve 31 Front gear cable 32 Rear gear cable 33 Front wheel brake cable 34 Rear wheel gear cable 40 Frame pipe 401 Handle stem 402 Head tube 403 Down tube 404 Seat tube 405 Chain stay 406 Top tube 407 Seat stay 41 C-type guide tubes 42, 43 Through holes 50 Bicycle 51 Front transmission lever 52 Front transmission 53 Rear transmission lever 54 Rear transmission 55, 57 Brake handle 56 Front wheel brake 58 Rear wheel brake

Claims (3)

[Utility model registration claims] At least one C-shaped guide tube is provided along the inner peripheral wall axis of the frame pipe, and at least both through holes are formed in the frame pipe at each part, and both of the through holes are mutually connected with the C-shaped guide tube. A frame pipe structure for a bicycle, wherein the steel wire penetrates through one of the holes and extends through the other through hole through the C-shaped guide tube so that the steel wire can be concealed in the frame pipe. . 2. The frame pipe comprises a top tube,
2. The bicycle frame pipe structure according to claim 1, including a seat stay, a seat tube, a down tube, and a chain stay. 3. The bicycle frame pipe structure according to claim 1, wherein the steel wires include front and rear gear cables and front and rear wheel brake cables.