JPS6127232B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a throttle operating device for a motorcycle.

Generally, the carburetor of a motorcycle is operated by a single Bowden wire that operates the throttle valve in the opening direction, and the throttle valve is returned to its original position by the biasing force of a spring. By the way, in the case of a piston type carburetor, since the sliding area is large, there is a risk that the piston valve may get caught in the sliding part and the throttle valve may not return after many years of use. In order to solve this problem, a so-called forced opening/closing type carburetor is used in which the throttle valve is operated in both the opening and closing directions using two Bowden wires. However, since two Bowden wires are led out from the throttle grip part of this type of handle, the handle part becomes complicated and the appearance is spoiled. In particular, recently, in order to reduce the risk of the Bowden wire getting caught on tree branches, etc. when running, a rigid wire guide is attached to the base end of the Bowden wire led out from the throttle grip. The wire guide is bent and formed to arrange the Bowden wire along the handlebar, but in such a case, using two Bowden wires as described above gives a more complicated feeling and reduces the appearance. There was a problem such as significant damage.

The present invention has been made based on the above circumstances, and its purpose is to allow two Bowden wires to be inserted into a bundle around the outside of the handlebar, thereby maintaining a good appearance. Another object of the present invention is to provide a throttle operating device that can use a common wire guide.

That is, in order to achieve the above object, the present invention
A throttle grip is rotatably provided at the end of the handlebar, and a reel case is provided to surround the wire reel provided on the throttle grip, and the opening side of the forced opening/closing type carburetor is attached to the wire reel. While connecting the ends of the Bowden wire and the closing side Bowden wire, the ends of each wire are inserted into a wire guide made of a rigid material whose middle part is bent approximately 90 degrees, and the proximal ends of these wire guides are connected to the reel. Attach it to the case, place the tip of each wire guide approximately parallel to the handlebar with the tip facing toward the center of the vehicle body, and place each of the Bowden wires led out from these wire guides along the handlebar. Assuming that the throttle operating device is a By opening in the direction in which the wire guides approach each other, the wire guides are arranged at an angle so that their distal ends approach each other, and a step is formed in the opening portion of the mounting hole in the reel case along the direction in which the wire guides are led out. , the opening of one of the mounting holes is provided so as to protrude in the opening direction with respect to the opening of the other mounting hole.

The present invention will be described below with reference to an embodiment shown in the drawings.

1 in the figure is the handlebar of a motorcycle,
At the end of this handlebar 1 is a brake lever 2.
and a throttle grip 3 are provided.
The throttle grip 3 is made of a rubber material and is tightly fitted onto a synthetic resin sleeve 4 which is rotatably fitted onto the end of the handlebar 1. A wire reel 5 is integrally formed at the end of the sleeve 4 on the vehicle center side. and,
A reel case 6 is provided surrounding the wire reel 5, and the reel case 6 is attached to the handlebar 1. Further, a flange portion 7 is integrally formed at the end of the throttle grip 3 on the vehicle center side, and between this flange portion 7 and the side surface of the reel case 6, a friction coefficient material such as polyethylene resin is formed. A sliding plate 8 made of a small material is interposed. Further, 9 and 10 are Bowden wires for operating a forced opening/closing type carburetor (not shown); 9 is an opening-side Bowden wire for operating a throttle valve in the opening direction;
10 is a closing Bowden wire that operates the throttle valve in the closing direction. These bowden wires 9,10
are flexible casings 11 and 12, respectively.
One end of these wires 13, 14 is connected to the above-mentioned forced opening/closing type carburetor, and the end on the throttle grip 3 side is connected to the wire. They are inserted and guided into guides 15 and 16, respectively. These wire guides 15 and 16 are made of a rigid material such as synthetic resin and have a tubular shape, and are curved approximately 90 degrees at the middle portion. And these intermediate curved portions 17,1
a portion closer to the carburetor than 7, that is, a tip side portion 18;
Each end of 18 has a synthetic resin cap 1.
9 and 19 are fitted into the flexible casing 1.
1 and 12, and the curved portion 1
The portions closer to the throttle grip 3 than 7, 17, that is, the end portions of the proximal portions 20, 20 are attached to the reel case 6. Attachment holes 24 and 25 are formed in the front surface of the reel case 6, into which the distal ends of the proximal portions 20 and 20 of the wire guides 15 and 16 are individually fitted.
As shown in FIG. 2, 4 and 25 are opened in a direction in which their axes approach each other as they advance diagonally upward and forward of the handlebar 1. Attachment flanges 26 and 27 are integrally provided at the distal ends of the proximal end portions 20 and 20 of the wire guides 15 and 16 to abut against the opening edges of the attachment holes 24 and 25. The mounting bracket 2 has the flanges 26 and 27 attached to the reel case 6 via the piston 32.
The wire guides 15 and 16 are fixed to the reel case 6 so as not to come off by pressing against the opening edges of the attachment holes 24 and 25 with the wire guides 8 . Due to this fixation, the wire guides 15 and 16 are led out in a direction inclined at an angle of about 45 degrees toward the upper front side of the handlebar 1 with respect to a horizontal plane including the centerline of the handlebar 1. The wire guides 15 and 16 are arranged substantially parallel to the handlebar 1 with their distal end portions 18 and 18 facing toward the center of the vehicle body, and are also aligned with the opening direction of the mounting holes 24 and 25. They are arranged in an inclined posture so that they approach each other as they move toward the distal end portions 18, 18. Therefore, the wire guide 15,1
The proximal end portions 20, 20 of the wire reel 5 are provided along the directions of connections at two opposing locations on the circumferential surface of the wire reel 5, and are connected to the Bowden wire 13 on the open side and the Bowden wire 14 on the closed side. are guided to the wire reel 5 without difficulty, and terminal fittings 21, 21 attached to the ends of the wires 13, 14 are fitted into attachment recesses 22, 23 formed in the wire reel 5.

Note that reference numerals 29 and 29 are O-rings that prevent water from entering into the reel case 6.

In addition, the mounting holes 24, 2 in the reel case 6
5, that is, the mounting portions 30, 31 of the wire guides 15, 16, the wire guides 15, 1
A step 33 is formed along the derivation direction of 6.
The attachment portion 30 of the open-side Bowden wire 9 located on the upper side projects obliquely upward from the mounting portion 31 of the closed-side Bowden wire 10 located on the lower side. Therefore, in the case of this embodiment, the distal end portions 18, 18 of the wire guides 15, 16 are located in front of the handlebar 1, overlapping each other in the front-rear direction.

Due to the presence of the step 33, when the reel case 6 is viewed from above, the lower mounting portion 3
1 is hidden behind the upper mounting part. Further, the lower mounting portion 31 is located radially inside the flange 7 of the throttle grip 3, and when viewed from the outside, the lower mounting portion 31 is located on the radially inner side of the flange 7 of the throttle grip 3. It is constructed so that it can be hidden behind the

In one embodiment of the present invention configured as described above, the Bowden wires 9 and 10 are connected to the wire guides 15 and 16.
Since they are guided by the handlebars 1 and placed parallel to the handlebar 1, there is little risk of them getting caught on tree branches or the like. Further, the wire guides 15 and 16 have distal end portions 18 and 18 close to each other, Bowden wires 9 and 10 are arranged close to each other, and proximal end portions 20 and 20 of these wire guides 15 and 16.
Since only the wires are separated from each other in the tangential direction at two opposing locations on the circumferential surface of the wire reel 5, even though there are two Bowden wires 9 and 10, these Bowden wires wires 9, 10
can be inserted and arranged in a bundle in front of the handlebar 1, which does not give a cluttered feeling and improves the appearance. In addition, the two Bowden wires 9 and 10 are arranged in a plane that includes the center line of the handlebar 1 and is inclined forward and upward at 45 degrees with respect to the horizontal plane. When viewed, one Bowden wire 10 is hidden behind the other Bowden wire 9. Furthermore, since the attachment portion 30 of the upper wire guide 15 protrudes forward than the lower attachment portion 31, when the passenger looks at this handle portion, the lower attachment portion 31 will be in the shadow of the upper attachment portion 30. I'll give it to you. Furthermore, since the lower mounting portion 31 is located radially inward from the outer circumferential edge of the flange 7 of the throttle grip 3, when viewed from the side, the lower mounting portion 31 is located on the radially inner side of the flange 7 of the throttle grip 3. Hide in the shadows. Therefore, when viewed from any direction, the Bowden wire 10 and attachment portion 31 on one side are hidden behind the other, which further reduces the appearance of clutter. In addition, a step 33 is provided at the mounting portions 30 and 31 of the wire guides 15 and 16 in the reel case 6.
, the distal end portions 18 and 18 of the wire guides 15 and 16 can be provided in a substantially overlapping positional relationship back and forth without changing the lengths of the proximal end portions 20 and 20 of the wire guides 15 and 16. 15,1
6 can be made common.

Note that the present invention is not limited to the above implementation.

For example, the arrangement direction of the distal end portion of the wire guide with respect to the horizontal plane is not limited to the above embodiment, and the throttle operating device according to the present invention is not limited to use in motorcycles, but can also be used in other small snowmobiles, etc. Applicable.

According to the present invention described in detail above, the Bowden wires are guided along the handlebar, so there is little risk of them getting caught in tree branches or the like while riding. Moreover, the distal end portions of the wire guide through which the Bowden wire is inserted are arranged close to each other, and only the proximal end portions on the reel case side are separated so as to face in the tangential direction of the wire reel. from,
Although there are only two Bowden wires, these wires can be inserted and arranged in a bundle around the handlebar, which reduces the appearance of clutter and improves the appearance. In addition, since the reel case has a step at the attachment part of the wire guide, it is possible to arrange the tips of these wire guides in an overlapping positional relationship, and in this case, the length of the proximal end of the wire guide can be adjusted. There is no need to make them different from each other, and it is possible to use a common wire guide.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of the main part, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIG. 3 is a sectional view taken along the line - in FIG. 2. It is. 1...handlebar, 3...throttle grip,
5... Wire reel, 6... Reel case, 9... Opening side Bowden wire, 10... Closing side Bowden wire, 15, 16... Wire guide, 17... Curved part, 18... Distal side part, 20... Proximal side part, 2
4, 25...Mounting hole, 33...Step.

Claims (1)

[Scope of Claims] 1. A throttle grip is rotatably provided at the end of the handlebar, and a reel case is provided to surround a wire reel provided on the throttle grip, and the wire reel is forcibly attached to the throttle grip. While connecting the ends of the open-side Bowden wire and the closed-side Bowden wire of the open-close type vaporizer, the ends of each wire are inserted into a wire guide made of a rigid material whose middle part is curved approximately 90 degrees, and the ends of the wire guides are connected. The base ends of the wire guides are attached to the reel case, and the base ends of each wire guide are arranged substantially parallel to the handlebar with the base ends facing toward the center of the vehicle body, and each of the Bowden wires led out from these wire guides is In a throttle operating device arranged along the handlebar, mounting holes are provided on the circumferential surface of the reel case into which the proximal ends of the wire guides are individually inserted, and these mounting holes are arranged so that their axes are on the distal end side of the wire guide. By opening the wire guides in a direction closer to each other as they advance, the wire guides are arranged at an angle so that their distal ends approach each other, and the wire guides are opened in the direction in which the wire guides lead out in the opening of the mounting hole in the reel case. What is claimed is: 1. A throttle operating device characterized in that a step is formed along the same line, and the opening of one mounting hole projects in the opening direction with respect to the opening of the other mounting hole.