JPH0584593U - Bicycle rug - Google Patents

Abstract

(57) [Summary] [Purpose] To easily install pipes. [Structure] Cylindrical main body 6 is provided with cylindrical protrusions 7 and 8, and protrusions 7 and 8 are provided with flat portions 9 and 10 perpendicular to the center lines of the upper pipe and the lower pipe to be attached by welding.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bicycle rug such as a bicycle head rug and a bicycle hanger rag.

[0002]

[Prior Art]

 FIG. 9 is a diagram showing a conventional bicycle head rug. In the figure, 1 is a cylindrical main body, 2 and 3 are holes provided at the mounting positions of the upper pipe and the lower pipe (not shown) of the main body 1.

In order to attach the upper pipe and the lower pipe to the bicycle head lag shown in FIG. 9, as shown in FIG. 10, a curved surface portion capable of contacting the main body 1 at the end portion of the lower pipe 4a (upper pipe). 5, the main body 1 and the ends of the upper pipe 4b and the lower pipe 4a are welded to each other as shown in FIG.

Note that, as a thing related to a bicycle rug, there is a Japanese Utility Model Publication No. 62-43994 publication.

[0005]

[Problems to be solved by the device]

 However, in such a bicycle head lag, when attaching the ends of the upper pipe 4b and the lower pipe 4a to the main body 1 by welding, it is necessary to provide the curved portion 5 at the ends of the upper pipe 4b and the lower pipe 4a. However, this work is very troublesome, and it is necessary to treat the burr after providing the curved surface portion 5. If the curved surface portion 5 is further provided, the length dimensions of the upper pipe 4b and the lower pipe 4a are reduced. Since it is difficult to determine, it is troublesome to attach the upper pipe 4b and the lower pipe 4a to the bicycle head rug.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a bicycle lug capable of easily mounting a pipe.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, according to the present invention, in a bicycle lug to which a pipe end is attached to a main body by welding, a protrusion is provided on the main body, and the protrusion has a flat surface portion perpendicular to the center line of the pipe. To provide.

[0008]

[Action]

 In this bicycle lug, when attaching the end of the pipe to the main body by welding, it is not necessary to provide a curved portion at the end of the pipe.

[0009]

【Example】

 FIG. 1 is a sectional view showing a bicycle head lag according to the present invention. In the figure, 6 is a cylindrical main body, 7 and 8 are cylindrical protrusions provided on the main body 6, 9 and 10 are flat portions provided on the protrusions 7 and 8, and flat portions 9 and 10 are upper portions. It is perpendicular to the center line of the pipe and lower pipe.

FIG. 2 is a view showing a state in which a pipe is attached to the bicycle head rug shown in FIG. In the figure, 11 is an upper pipe and 12 is a lower pipe. One ends of the upper pipe 11 and the lower pipe 12 are attached to the projecting portions 7 and 8 by welding. Reference numeral 13 is a bicycle hanger tag, and the other end of the lower pipe 12 is attached to the bicycle hanger tag 13 by welding. Reference numeral 14 is a vertical pipe whose end is attached to the bicycle hanger rag 13 by welding, and the other end of the upper pipe 11 is attached to the vertical pipe 14 by welding.

In the bicycle head lag shown in FIG. 1, when the ends of the upper pipe 11 and the lower pipe 12 are attached to the main body 6 by welding, curved parts are attached to the ends of the upper pipe 11 and the lower pipe 12. Since it is not necessary to provide it, the work of attaching the upper pipe 11 and the lower pipe 12 to the bicycle head lag can be easily performed.

FIG. 3 is a front view showing another bicycle head lug according to the present invention, FIG. 4 is a side sectional view showing the bicycle head lug shown in FIG. 3, and FIGS. 4 is a sectional view taken along the line AA, a sectional view taken along the line BB, and a sectional view taken along the line CC, and FIG. 6 is a bottom view showing the bicycle head drag shown in FIG. In the figure, reference numeral 15 is a cylindrical main body, 16 is a projection provided on the main body 15, 17 is a flat surface provided on the projection 16, and the flat surface 17 is perpendicular to the center line of the lower pipe 21. Reference numeral 18 is a hole provided in the flat portion 17, and the diameter of the hole 18 is slightly larger than the diameter of the lower pipe 21. Reference numeral 19 is a hole provided in the protruding portion 16, and the diameter of the hole 19 is slightly larger than the diameter of the upper pipe 20.

In this bicycle head lag, when the end portion of the lower pipe 21 is attached to the main body 15 by welding, it is not necessary to provide a curved surface portion at the end portion of the lower pipe 21. The work of attaching the lower pipe 21 can be easily performed.

FIG. 7 is a plan view showing a bicycle hanger tag according to the present invention, and FIG. 8 is a front view showing the bicycle hanger tag shown in FIG. In the figure, 22 is a cylindrical main body, 23 and 26 are cylindrical protrusions provided on the main body 22, 24 and 27 are flat portions provided on the protrusions 23 and 26, and the flat portions 24 and 27 are lower portions. The pipe is perpendicular to the centerline of the vertical pipe. Reference numerals 25 and 28 are holes provided in the flat portions 24 and 27, 29 and 30 are chain stay insertion portions provided in the main body 22, 31 is a core bar pipe mounted in the main body 22, 32 is the main body 22, the core bar It is a small hole for drainage provided in the pipe 31.

In this bicycle hanger rag, when attaching the lower pipe and the end of the vertical pipe to the main body 22 by welding, it is not necessary to provide a curved portion at the end of the lower pipe and the vertical pipe. It is possible to easily attach the lower pipe and the vertical pipe to the hanger rug.

[0016]

[Effect of the device]

 As described above, in the bicycle lag according to the present invention, when the pipe end is attached to the main body by welding, it is not necessary to provide a curved portion at the end of the pipe. Can be easily installed. Thus, the effect of this invention is remarkable.

[Brief description of drawings]

FIG. 1 is a sectional view showing a bicycle head lag according to the present invention.

FIG. 2 is a view showing a state in which a pipe is attached to the bicycle head lug shown in FIG.

FIG. 3 is a front view showing another bicycle head lug according to the present invention.

4 is a side sectional view showing the bicycle head rug shown in FIG. 3. FIG.

5A to 5C are cross-sectional views taken along the line AA of FIG. 4 and B, respectively.
FIG. 4 is a cross-sectional view taken along line B and CC.

6 is a bottom view showing the bicycle head rug shown in FIG. 3. FIG.

FIG. 7 is a plan view showing a bicycle hanger tag according to the present invention.

FIG. 8 is a front view showing the bicycle hanger tag shown in FIG. 7.

FIG. 9 is a diagram showing a conventional bicycle head rug.

10 is a view showing an end portion of a lower pipe to be attached to the bicycle head rug shown in FIG.

FIG. 11 is a view showing a state in which an upper pipe and a lower pipe are attached to the bicycle head rug shown in FIG.

[Explanation of symbols]

 6 ... Main body 7, 8 ... Projection part 9, 10 ... Plane part 15 ... Main body 16 ... Projection part 17 ... Plane part 22 ... Main body 23 ... Projection part 24 ... Plane part 26 ... Projection part 27 ... Plane part

Claims (1)

[Scope of utility model registration request] 1. A bicycle lug for attaching a pipe end to a main body by welding, wherein the main body is provided with a projecting portion, and the projecting portion is provided with a flat surface portion perpendicular to a center line of the pipe. Bicycle rug.