JPH0546689U - Anti-vibration weight mounting structure for handle pipe - Google Patents

Abstract

(57) [Summary] [Structure] A metal bar end member having an outer diameter equivalent to the outer diameter of the handle pipe 1 at the left and right ends of the handle pipe 1, and a vibration damping weight 11 cast therein. Install by press-fitting 3. [Effect] Since the metal bar end member 3 in which the weight 11 is cast only needs to be press-fitted into the end portion of the handle pipe 1, positioning is easy and the number of processing steps is small. In addition, by projecting the weight 11 to the outside of the end portion of the handle pipe 1, the positional freedom of the weight is increased. And
After the metal bar end member 3 is press-fitted into the handle pipe 1 and buffed together, the treatment is easy and the color shades are easy to align.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an antivibration weight mounting structure for a handle pipe in a saddle type vehicle such as a motorcycle.

[0002]

[Prior Art]

 In motorcycles, antivibration weights are provided on the left and right ends of the handle pipe. For example, in Japanese Utility Model Laid-Open No. 56-82491, there is an elastic bush press-fitted into the end of the handle pipe. It is disclosed that a weight is inserted, and Japanese Utility Model Laid-Open No. 64-42995 discloses that a resin bar end member formed by inserting a weight inside is press-fitted into an end portion of a handle pipe. .. In addition, as shown in FIG. 3, a weight 35 is inserted into the handle pipe 31, and the weight 35 is positioned by a positioning pin 33 inserted through a positioning hole 32 formed in the handle pipe 31. There is also one in which the outer periphery is plug-welded 36 in a plug-welding hole 34 formed in the handle pipe 31, and a metal bar end member 37 is press-fitted into the end portion of the handle pipe 31. Reference numeral 38 is a grip. Prior to mounting the grip 38, the positioning pin 33 is removed, and the bead portion of the plug welding 36 is ground.

[0003]

[Problems to be solved by the device]

 Thus, in the case where the metal bar end member 37 is provided, since the weight 35 is positioned and welded, it is necessary to open the holes 32 and 34 in the handle pipe 31. It also required bead polishing at the location, resulting in a large number of processing steps.

Therefore, an object of the present invention is to provide a mounting structure in which a vibration proof weight can be easily positioned in a handle pipe provided with a metal bar end member at its end, and the number of processing steps can be reduced. It is in.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a metal bar end member having an outer diameter equivalent to the outer diameter of the handle pipe and a vibration damping weight cast inside the handle pipe. It is characterized by being press-fitted and attached. Specifically, the weight projects outward from the end portion of the handle pipe. Further, the handle pipe is made of stainless steel, and is buffed with the metal bar end member attached.

[0006]

[Action]

 First, it is only necessary to press-fit the metal bar end member into which the weight has been cast into the end portion of the handle pipe, which eliminates the need for drilling, welding and bead polishing. Further, by projecting the weight outward from the end of the handle pipe, the degree of freedom of position of the weight is increased. Then, after the metal bar end member is press-fitted into the stainless steel handle pipe, buffing is performed together, and the treatment is easy and the color tone is easy to align.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 showing a first embodiment of the vibration-proof weight mounting structure of the present invention, 1 is a handle pipe, 3 is a bar end member, 9 is a grip, and 11 is a weight. In the embodiment, the handle pipe 1 is made of stainless steel, the bar end member 3 is made of aluminum alloy, and the weight 11 is made of an appropriate metal.

The aluminum alloy bar end member 3 has an outer diameter portion 4 equivalent to the outer diameter of the handle pipe 1 and a spherical portion 5 at its outer end, and is slightly larger than the inner diameter of the handle pipe 1 on the inner end side. It has a diameter press-fitting portion 6. At the time of casting the aluminum alloy bar end member 3, a cylindrical weight 11 is cast and integrated, that is, the weight 11 is an insertion portion 12 into the inside of the handle pipe 1 and an end portion of the handle pipe 1. It has a cast-in portion 13 protruding further outward.

In this way, the press-fitting portion 6 of the aluminum alloy bar end member 3 in which the weight 11 is cast is press-fitted and fixed in the end portion of the stainless steel handle pipe 1. Then, the outer peripheral surface of the stainless steel handle pipe 1 and the surfaces of the outer diameter portion 4 and the spherical portion 5 of the aluminum alloy bar end member 3 are buffed together to produce light. Then, the grip 9 is attached to the outer periphery of the end portion of the handle pipe 1.

Next, in FIG. 2 showing the second embodiment, 1 is a handle pipe, 3 is a bar end member, 9 is a grip, and 21 is a weight. As with the first embodiment, the handle pipe 1 is made of stainless steel. The steel and the bar end member 3 are made of aluminum alloy, and the weight 21 is made of an appropriate metal. In this embodiment, the weight 21 has a larger diameter and shorter insertion portion 22 than the first embodiment, a large diameter casting portion 23 and a small diameter casting portion 24 therebetween.

As described above, any of the embodiments has a structure in which the aluminum alloy bar end member 3 in which the weight 11 or the weight 21 is cast is press-fitted into the end portion of the stainless steel handle pipe 1. Therefore, it is possible to eliminate the conventional hole processing, welding, and bead polishing (see FIG. 3).

Further, since the casting portion 11 of the weight 11 or the casting portion 23 and the casting portion 24 of the weight 21 are projected outward from the end portion of the handle pipe 1, the weight has a large degree of freedom in position. Has become. In addition, since the aluminum alloy bar end member 3 is press-fitted into the stainless steel handle pipe 1 and then buffed together, the treatment is easy and the gloss shades are easily aligned.

[0013]

[Effect of the device]

 As described above, according to the antivibration weight mounting structure of the handle pipe of the present invention, since it is sufficient to press-fit the metal bar end member into which the weight is cast into the end portion of the handle pipe, positioning is easy and the man-hours required for machining are reduced. Few. Further, as in the second aspect, by projecting the weight outward from the end portion of the handle pipe, the degree of freedom of position of the weight is increased. According to the third aspect, the metal bar end member is press-fitted into the stainless steel handle pipe, and then the buffing process is performed together, so that the process is easy and the color shades are easily aligned.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a first embodiment of an anti-vibration weight mounting structure of the present invention.

FIG. 2 is a sectional view of an essential part showing the second embodiment of the same.

FIG. 3 is a sectional view of an essential part showing an example of a conventional vibration-proof weight mounting structure.

[Explanation of symbols]

1 ... Handle pipe, 3 ... bar end member, 9 ... grip 11,21 ... weight.

Continuation of the front page (72) Inventor Takaji Sato 1-4-1 Chuo, Wako City, Saitama Prefecture Honda R & D Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A bar end member made of metal, having an outer diameter equal to the outer diameter of the handle pipe and having a vibration damping weight cast therein, is press-fitted and attached to the left and right ends of the handle pipe. Anti-vibration weight mounting structure for handle pipes. 2. The antivibration weight mounting structure according to claim 1, wherein the weight projects outward from an end of the handle pipe. 3. The vibration damping weight mounting structure according to claim 1, wherein the handle pipe is made of stainless steel, and is buffed in a mounting state of the metal bar end member.