JP2003193869A - Mounting shape of throttle wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting shape of a throttle wire capable of reducing protrusion dimension of the throttle wire while maintaining its operation property. <P>SOLUTION: This mounting shape of the throttle wire is constituted in such a way that a protruding part A protruding substantially linearly in the direction of rotation from a tube guide 8, a bending part B bent in the direction of vicinity of a turn shaft of a handle bar at predetermined curvature from a tip of the protruding part A, and an extension part C extended in the direction of vicinity of the turn shaft of the handle bar from a tip of the bent part B are formed to attach the throttle wire 9 whose one end is fixed to the tube guide 8 operating in the interlocking relationship with the rotation of a throttle grip 7 and whose other end is fixed to an opening and closing operation part of a throttle valve of a vehicle to the vehicle. The bent part B has a shape that it is also bent in the direction z of crossing a plane α including the direction y of protrusion of the protruding part A and the direction x of extension of the extension part C. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting shape of a throttle wire for mounting a throttle wire for opening and closing a throttle valve of a vehicle on a vehicle as the throttle grip rotates.

[0002]

2. Description of the Related Art Generally, a tube guide that rotates with the rotation of the throttle grip is interposed between the throttle grip attached to the tip of the right handlebar of a motorcycle and the handlebar. One end of the throttle wire is fixed to the section.
This throttle wire controls the opening and closing of the throttle valve of the vehicle according to the rotation angle of the throttle grip, and as described above, one end is connected to the tube guide and the other end is connected to the opening / closing operation part of the throttle valve. Has been done.

As shown in FIG. 9, a conventional throttle wire 101 has one end fixed to a proximal end side 104a of a tube guide 104 interposed between a handlebar 102 and a throttle grip 103, and from there, the switch case 1 is provided.
05, it is extended to the vicinity of the rotation axis of the handlebar 102 by projecting downward by a predetermined dimension while being covered with a metal guide pipe 106 from the opening and being bent by a predetermined angle.

That is, the throttle wire 101 is guided by the guide pipe 106 that is bent inward of the vehicle while projecting downward of the switch case 105, and is extended to the vicinity of the rotation axis of the handlebar 102 for steering. Even if the handlebar 102 rotates at this time, the throttle wire 101 is prevented from interfering with the peripheral components of the motorcycle such as the fuel tank. An outer tube 107 made of resin is connected to the tip of the guide pipe 106 by caulking or the like, and a pipe inner 108 made of resin is formed on the inner peripheral surface of the guide pipe 106.
The throttle wire 101 is configured to be slidable inside the pipe inner 108 inside the guide pipe 106 and inside the outer tube 107 at a portion extending from the guide pipe 106.

[0005]

However, in the above-mentioned conventional throttle wire guided by the guide pipe, since the bending of the handlebar in the direction near the rotation axis is performed within a single plane, the protrusion There is a problem in that the size cannot be reduced so much that the size and shape of the peripheral components such as the fuel tank are restricted in order to avoid interference with the guide pipe.

That is, as shown in FIG. 10, since the bending of the guide pipe 106 is performed only within a single plane (within the paper surface of the figure), in order to reduce the downward protruding dimension U,
It is necessary to reduce the curvature of the bent portion so as to be in a state (protruding dimension U ′) as shown by the two-dot chain line in FIG. It is strongly pressed by 108 and twists during sliding. When such twisting occurs, the sliding load of the throttle wire 101 increases, the operation is not performed smoothly, and the throttle wire 1 easily breaks.
There was a problem that the life of 01 became short.

Therefore, it is necessary to dispose the guide pipe 106 with a certain degree of curvature at the bent portion. However, if this is done, the projecting dimension U becomes large, and the periphery of the fuel tank of the vehicle, etc. is located at a position lower than the projecting dimension U. There is a problem in that the degree of freedom in designing the vehicle becomes poor because the components must be set.

The present invention has been made in view of the above circumstances, and provides a mounting shape of a throttle wire capable of reducing the dimension in the protruding direction while maintaining the operability of the throttle wire. is there.

[0009]

The invention according to claim 1 is
The interlocking member is formed at the tip of the handlebar so that a throttle wire having one end fixed to an interlocking member interlocking with rotation of a throttle grip and the other end fixed to an opening / closing operation portion of a throttle valve of the vehicle is attached to the vehicle. From the tip of the protruding portion to a substantially linear shape in the direction of rotation, a bent portion bent from the tip of the protruding portion to a direction near the rotation axis of the handlebar with a predetermined curvature, and the handlebar from the tip of the bent portion. In the mounting shape of the throttle wire in which the extending portion extending in the direction near the rotation axis is formed, the bent portion intersects with a plane including the projecting direction of the projecting portion and the extending direction of the extending portion. Characterized by being bent in the same direction.

The invention according to claim 2 is characterized in that the bent portion of the throttle wire is guided by a guide pipe extending from the switch case.

According to a third aspect of the present invention, a switch case is arranged on the handlebar, the throttle wire is bent from a protruding direction thereof to a direction near a rotation axis of the handlebar, and a protruding direction of the protruding portion is set. A guide that is bent in a direction intersecting a plane including the extending direction of the extending portion is formed in the switch case, and the throttle wire is guided and attached by the guide. To do.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. The throttle wire according to the present embodiment opens and closes a throttle valve of a vehicle in accordance with the rotation of a throttle grip, and as shown in FIG. 1, it extends downward from a switch case 2 attached to a handlebar 1 of a motorcycle. It has been extended.

The switch case 2 is made of a resin component having an upper and lower halves (upper switch case 2a and lower switch case 2b), and an engine stop switch 3, a lighting switch 4 and a starter switch 5 are provided, and the switch case 2 is provided. The electrical components that can be switched are switchable. Incidentally, reference numeral 6 in the figure indicates wiring for sending electric signals of the switches 3 to 5 to the vehicle side.

A throttle grip 7 is rotatably attached to the front end of the handlebar 1 with respect to the handlebar 1. As shown in FIG. 2, a tube guide 8 (interlocking member) is attached to the inner peripheral surface of the throttle grip 7, and the tube guide 8 can also rotate with respect to the handlebar 1 in conjunction with the throttle grip 7. Is configured.

The tube guide 8 is made of a molded product such as hard resin or aluminum die cast, and has a convex portion 8a projecting in the outer peripheral direction on the base end side of the throttle grip 7, and the convex portion 8 is formed.
Since a is locked and assembled in the groove portion 7a of the throttle grip 7, it can be integrally rotated with the throttle grip 7. The switch case 2 is provided on the base end side (the left end side in the figure) of the tube guide 8.
A large-diameter base end portion 8b located inside is formed, and the base end portion 8b is configured to rotate within the switch case 2 as the tube guide 8 rotates.

As shown in FIG. 3, an arcuately extending groove 8ba is formed on the side surface of the base end portion 8b, and a pair of cutout portions 8bb (open upwardly) which communicate with each other in the width direction of the groove 8ba. Formed) and a hole 8bc.
As shown in FIG. 4, drum-shaped locking pieces 13 and 14 fixed to the tips of the throttle wires 9 and 11 are inserted into the cutout portions 8bb and the holes 8bc.

As shown in FIG. 5, the lower switch case 2b
Two holes 2ba, 2bb facing the internal space of the switch case 2 are formed on the bottom surface of the front and rear, respectively, and the upper ends of the guide pipes 10, 12 are locked in the holes 2ba, 2bb (FIG. 4). reference). This guide pipe 1
The inner peripheral surface of 0, 12 has a resin pipe inner 17, 1,
8 is formed so that the throttle wires 9 and 11 can be smoothly slid in the guide pipes 10 and 12.

At the tips of the guide pipes 10 and 12,
Metal fittings 10a and 12a having flanges 10aa and 12aa are formed, and the tip ends are respectively inserted while abutting the flanges 10aa and 12aa to the openings of the holes 2ba and 2bb, and the flange 12aa is attached by a mounting fitting (not shown). While the screws are fixed, the flanges 10aa are screwed and locked by the mounting bolts 17.

In FIG. 4, when the base end portion 8b rotates in the direction a along with the rotation of the throttle grip 7, the throttle wire 11 is pulled and moves in the guide pipe 12 in the axial direction thereof, and the throttle valve of the vehicle is moved. When the opening / closing operation portion (not shown) is operated to open a predetermined amount, while the base end portion 8b is rotated in the b direction along with the returning operation of the throttle grip 7 (rotation to the original position), the throttle wire 9 is moved. It is pulled and moves in the axial direction within the guide pipe 10, and the opening / closing operation section is operated so as to close the throttle valve of the vehicle by a predetermined amount.

As shown in the figure, the guide pipes 10 and 12 are substantially linear in the rotation direction of the throttle grip 7 (that is, in the tangential direction of the base end 8b and below the switch case 2). A protruding portion A that is dimensionally protruded, a bent portion B that is bent from the tip of the protruding portion A in a direction near the rotation axis of the handlebar 1 with a predetermined curvature, and a vicinity of the rotation axis of the handlebar 1 from the tip of the bent portion B. And the throttle wires 9 and 11 also have the protruding portion A, the bent portion B, and the extending portion C.

The protruding portions A of the guide pipes 10 and 12 are
Throttle wires 9 and 1 extending downward from the base end 8b
The bent portion B is required in order to avoid interference with peripheral components such as the fuel tank within the steering range of the handlebar 1, while it is necessary to cover 1 without any load. In other words, considering that the throttle wires 9 and 11 must first project in the direction of connection to the base end portion 8b,
It is necessary that the guide pipes 10 and 12 are bent downward in a predetermined dimension and bent in the width direction (inside) of the vehicle.

Outer tubes 15 and 16 made of resin are connected to the tips of the guide pipes 10 and 12 by caulking, and throttle wires 9 and 11 extending further from the guide pipes 10 and 12 are connected to the outer tube 1.
It is movable within 5 and 16, respectively. That is, the throttle wires 9 and 11 slide on the inner peripheral surfaces of the pipe inners 17 and 18 in the guide pipes 10 and 12, and the inner peripheral surfaces of the outer tubes 15 and 16 extend from the guide pipes 10 and 12. By sliding on the surface, the rotational movement of the throttle grip 7 is transmitted to the opening / closing operation portion of the throttle valve.

Here, in the guide pipe 10 that covers the rear side of the throttle wires 9 and 11 fixed to the front and rear positions with respect to the base end portion 8b, as shown in FIG. The bent portion B bent in the direction x near the rotation axis is also bent with a predetermined curvature in a direction intersecting a plane including the protruding direction y of the protruding portion A and the extending direction y of the extended portion C. Explaining it schematically, the guide pipe 12 is bent in a plane α (a plane including the protruding direction y and the extending direction x) as shown in FIG. 7, while the guide pipe 10 is bent.
As shown in FIG. 8, in addition to being bent in the plane α, is also bent in the direction z intersecting the plane α.

That is, the conventional throttle wire is two-dimensionally bent in the same plane including the protruding direction from the switch case, whereas the throttle wire 9 according to the present embodiment is three-dimensionally bent. Therefore, it is possible to reduce the dimension in the protruding direction while avoiding an excessive sliding load of the throttle wire 9.

Therefore, since the guide pipe 10 is bent in the z direction, the projecting dimension S of the guide pipe 10 (throttle wire 9) in the y direction has no bending in the z direction (broken line portion in FIG. 8). Since it is smaller than the projecting dimension T of), it is possible to easily avoid interference with peripheral components such as a fuel tank, while the size and shape of the peripheral components are restricted to avoid such interference. Can be avoided, and the degree of freedom in designing the vehicle can be improved.

Further, in the present embodiment, only the guide pipe 10 on the side close to the fuel tank of the vehicle (rear side) is bent in two directions as described above, and the guide pipe 12 is in a single plane as in the conventional case. Although bending is performed, the guide pipe 12 on the far side (front side) may also be bent in two directions. In other words, while only the throttle wire 9 is bent in two directions in the above embodiment, the throttle wire 11 may also be bent in two directions.

However, according to the above-described embodiment in which only the rear guide pipe 10 (that is, the throttle wire 9) is bent in two directions, the rear side avoids interference with peripheral components such as a fuel tank while avoiding the periphery. The front side, which is the side farther from the components, has the same configuration as the conventional one, which is preferable because it can suppress an increase in manufacturing cost due to a design change.
In the present embodiment, two throttle wires 9 and 11 are connected to the tube guide 8 and the throttle valve is operated by rotating the throttle grip in two directions. The present invention can also be applied to those to which wires are connected.

Although the present embodiment has been described above, the present invention is not limited to this. For example, the throttle wire is bent from the protruding direction toward the vicinity of the rotation axis of the handlebar 1, and the protruding direction of the protruding portion is extended. A guide may be formed in the switch case 2 so as to be bent in a direction intersecting a plane including the extending direction of the portion. That is, instead of guiding the throttle wire by the guide pipe, the guide portion may be built in the switch case 2.

However, if the bent portion B is guided by the guide pipe extending from the lower side of the switch case 2 as in this embodiment, the switch case 2 itself can be downsized and the curvature of the bent portion can be reduced. This is preferable because it is possible to suppress costs associated with design changes when making changes. That is, when the bent portion B is housed in the switch case 2, the switch case 2 has to be enlarged by that space, which leads to an increase in size and a design change of the entire switch case 2 when changing the curvature of the bent portion. There is no choice but to do it.

Further, although the present embodiment is applied to the mounting shape of the throttle wire of a two-wheeled vehicle, the present invention is not limited to this, and other vehicles having a handlebar (for example, AT).
It may be applied to a mounting shape of a throttle wire arranged in a V or a snowmobile.

[0031]

According to the invention of claim 1, since the bent portion of the throttle wire is also bent in a direction intersecting a plane including the protruding direction of the protruding portion and the extending direction of the extending portion, the throttle wire is bent. The protrusion size can be reduced while maintaining the operability of the wire.

According to the second aspect of the present invention, the bent portion of the throttle wire is guided by the guide pipe extending from the switch case, so that the switch case is accommodated in the switch case as compared with the case in which the bent portion is accommodated. It is possible to miniaturize itself, and when changing the curvature of the bent portion according to the form of the vehicle, it is possible to suppress the cost associated with the change.

According to the invention of claim 3, in the switch case attached to the handlebar, the throttle wire is also bent in a direction intersecting with a plane including the projecting direction of the projecting portion and the extending direction of the extending portion. Therefore, it is possible to reduce the number of parts and to improve workability in assembling work, as compared with the case where the guide pipe is separately installed.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a guide pipe that covers a bent portion of a throttle wire according to an embodiment of the present invention is assembled to a switch case.

FIG. 2 is a schematic view showing a throttle portion (throttle grip and tube guide) of a motorcycle to which a throttle wire according to an embodiment of the present invention is applied (upper half is a front view, lower half is a sectional view thereof).

FIG. 3 is a left side view and a front view showing a base end portion of a tube guide of a motorcycle to which a throttle wire according to an embodiment of the present invention is applied.

FIG. 4 is a schematic cross-sectional view showing a state in which the throttle wire according to the embodiment of the present invention is assembled in a switch case while being covered with a guide pipe.

FIG. 5 is a bottom view of a switch case to which the throttle wire according to the embodiment of the present invention is applied.

FIG. 6 is a bottom view showing a state in which a guide pipe that covers the throttle wire according to the embodiment of the present invention is assembled to the switch case.

FIG. 7 is a schematic diagram showing a state in which a throttle wire (front throttle wire) according to an embodiment of the present invention is bent while being guided by a guide pipe.

FIG. 8 is a schematic diagram showing a state in which the throttle wire (rear throttle wire) according to the embodiment of the present invention is bent while being guided by a guide pipe.

FIG. 9 is a schematic view showing a state in which a conventional throttle wire is attached to a switch case.

FIG. 10 is a schematic view showing a bent state of a conventional throttle wire.

[Explanation of symbols]

1 ... Handlebar 2 ... Switch case 3 ... Engine stop switch 4 ... Lighting switch 5 ... Starter switch 6 ... Wiring 7 ... Throttle grip 8 ... Base end 9, 11 ... Throttle wire 10, 12 ... Guide pipe 13, 14 ... Locking pieces 15, 16 ... Outer tube 17, 18 ... Pipe inner x ... (Throttle wire) extension direction y ... (throttle wire) projection direction z: direction intersecting plane α S ... Projection size A ... Projection B ... Bent part C ... Extension

Claims (3)

[Claims] 1. A throttle wire having one end fixed to an interlocking member that is interlocked with the rotation of a throttle grip formed at the tip of a handlebar and the other end fixed to an opening / closing operation portion of a throttle valve of a vehicle is attached to a vehicle. Therefore, a projecting portion that projects substantially linearly from the interlocking member in the rotation direction, a bent portion that is bent from the tip of the projecting portion to a direction near the rotation axis of the handlebar with a predetermined curvature, and the tip of the bent portion An extending portion extending in the direction near the rotation axis of the handlebar from the above, and the bending portion has a protruding direction of the protruding portion and an extending direction of the extending portion. The mounting shape of the throttle wire, which is also bent in a direction intersecting a plane including and. 2. The mounting shape of the throttle wire according to claim 1, wherein the bent portion of the throttle wire is guided by a guide pipe extending from the switch case. 3. A switch case is disposed on the handlebar, the throttle wire is bent from a protruding direction thereof to a direction in the vicinity of a rotation axis of the handlebar, and a protruding direction of the protruding portion and an extension of the extending portion are extended. The guide which is bent in a direction intersecting with a plane including the installation direction is formed in the switch case, and the throttle wire is guided and attached by the guide. Mounting shape of throttle wire.