JPH08268368A - Throttle grip device for motorcycle - Google Patents

Abstract

PURPOSE: To provide a motorcycle throttle grip device allowing a throttle cable to be used in common, even when a carburetor to be used is different. CONSTITUTION: This device is made of a throttle grip 52 rotatably coupled to the end section of a handle bar 40, a throttle rotor 53 fitted to one end of the grip 52, and a throttle cable 54. Also, a coupling recess 57 is formed at a position corresponding to a coupling projection 56 on the end external surface of the grip 52 for coupling the rotor 53 to the grip 52, so as to be rotatable integrally. On the other hand, a plurality of coupling holes 61 for coupling an end piece 60 at the end of the throttle cable 54 are arranged at a constant angular difference from the recess 57, and the combination of the projection 56, the recess 57 and the holes 61 is changed, thereby varying the length of the throttle cable 54 from the rotor 53 to a carburetor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throttle grip device for a motorcycle.

[0002]

2. Description of the Related Art There is one in which the number of revolutions of an engine is controlled by the amount of air sent from a carburetor to the engine. In general, motorcycles control this carburetor by operating a throttle grip device provided at the right end of the handlebar with the right hand.

FIG. 9 is a vertical sectional view of a general throttle grip device, and FIG. 10 is a sectional view taken along line XX of FIG. As shown in FIGS. 9 and 10, the throttle grip device 1 includes a throttle grip 3 which is rotatably attached to a right end portion of a handlebar 2, and an integral or integral structure at one end of the throttle grip 3. The throttle rotor 4 is provided, a throttle cable 5 having one end locked to the throttle rotor 4 and the other end connected to a carburetor (not shown), and a throttle case 6 in which the throttle rotor 4 is housed. . Further, the throttle cable 5 is provided with an adjuster 7 for adjusting the amount of play.

A protrusion 8 is formed on the throttle rotor 4, and when the protrusion 8 contacts a stopper 9 provided in the throttle case 6, the throttle grip 3
The fully closed position of is positioned. Further, the fully open position of the throttle grip 3 is positioned by a stopper (not shown) provided on the carburetor side.

In the case of the general throttle grip device 1 shown in FIG. 10, the throttle rotor 4 is provided with a locking hole 10 at one location, and the locking cable 5 is inserted into the locking hole 10.
The end piece 11 is locked. Then, by rotating the throttle grip 3 in the direction of the arrow in the figure, the throttle cable 5 is pulled, and the rotation of the engine (not shown) rises. Further, when lowering the rotation of the engine, if the hand is released from the throttle grip 3, the throttle cable 5 is moved by a return spring (not shown) provided on the carburetor side.
Is being pulled back.

FIG. 11 shows a forcible opening / closing type throttle grip device 21, in which the pulling side throttle cable 22 and the returning side throttle cable 23 are locked to the throttle rotor 24, respectively. There is.

[0007]

However, even in the same type of motorcycle, if the carburetor used is different, the length of the throttle cable will be slightly different.
Therefore, it is uneconomical to prepare throttle cables of various lengths according to the carburetor used.

Further, the throttle cable expands over time and the amount of play increases, but the adjuster may not be able to absorb this amount of play, and it may be necessary to replace the throttle cable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a throttle grip device for a motorcycle in which a common throttle cable can be used even if different carburetors are used.

[0010]

In order to solve the above-mentioned problems, a throttle grip device for a motorcycle according to the present invention is rotatably attached to an end portion of a handlebar as described in claim 1. A throttle grip device for a motorcycle comprising: a throttle grip, a throttle rotor provided at one end of the throttle grip, and a throttle cable having one end locked to the throttle rotor and the other end connected to a carburetor. In the above, the fitting protrusions are formed on the outer peripheral surface of the end portion of the throttle grip at equal intervals, and the fitting concave portions are formed on the inner peripheral surface of the throttle rotor at positions corresponding to the fitting protrusions. While it is fitted to the throttle grip so that it can rotate, an end piece is attached to the end of the throttle cable. A plurality of locking holes for locking the end pieces are formed in the throttle rotor, the locking holes are arranged with a certain angular difference from the fitting recesses, and the fitting protrusions are provided. The length of the throttle cable from the throttle rotor to the carburetor is changed by changing the combination of the fitting recess and the locking hole.

[0011]

In the present invention having the above structure, the throttle grip rotatably attached to the end portion of the handlebar, the throttle rotor provided at one end of this throttle grip, and one end of this throttle rotor are engaged. Of the throttle rotor, the other end of the throttle grip of the motorcycle throttle grip device, which is composed of a throttle cable connected to the carburetor at the other end, is formed at equal intervals on the outer periphery of the throttle rotor to form an inner periphery of the throttle rotor. A fitting recess is formed at a position corresponding to the fitting protrusion on the surface to rotatably fit the throttle rotor to the throttle grip, while an end piece is attached to the end of the throttle cable. , A plurality of locking holes for locking the end pieces are formed in the throttle rotor, and the locking holes are respectively formed. The throttle cable from the throttle rotor to the carburetor is arranged with a certain angle difference from the fitting recess, and the combination of the fitting projection, the fitting recess, and the locking hole is changed. Since the length has been changed, variations in the length of the throttle cable have increased, the common throttle cable can be used even for models with different carburetors, and the length of the throttle cable can be slightly changed. , The adjuster for play amount adjustment is unnecessary

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view showing an example of a motorcycle to which the present invention is applied. The motorcycle 31 has a body frame 32, and an engine 33 is mounted on the lower front portion of the body frame 32. A fuel tank 34 is arranged above the engine 33.
A driving seat 35 is installed behind the vehicle.

A head pipe 36 is provided in front of the vehicle body frame 32, and a steering mechanism 37 is provided on the head pipe 36. The steering mechanism 37 is provided with a pair of left and right front forks 39 that rotatably support the front wheels 38. The front fork 39 is
The front wheel 38 is fixed in parallel so as to sandwich it, while the handlebar 40, the front fender 41, etc. are attached. The steering mechanism 37 is the head pipe 36.
The front wheel 38 is pivotally mounted to the left and right so that the front wheel 38 can be pivoted left and right by the handle bar 40.

On the other hand, a swing arm 43 is pivotally attached to a pivot shaft 42 which is provided at a lower center of the body frame 32 so as to swing around the pivot shaft 42, and a rear wheel 44 is rotated at a rear end of the swing arm 43. Freely supported.
The lower end of the rear shock absorber 45 is pivotally attached to the rear end side of the swing arm 43, and the upper end of the rear shock absorber 45 is pivotally attached to the vehicle body frame 32.

An exhaust pipe 46a and a muffler 46b forming an engine exhaust system 46 are connected to the front side of the engine 33. Further, on the rear side of the engine 33, a carburetor 47a and an air cleaner 47b forming an engine intake system 47 are arranged. Furthermore, engine 3
3 In front of the radiator 4 which constitutes the engine cooling system 48
8a is arranged and connected to the engine 33 by a cooling water pipe 48b.

FIG. 2 is a view on arrow II of FIG. As shown in FIG. 2, a handle grip 49 is provided at the left end of the handle bar 40. Meanwhile, the handlebar 40
A throttle grip device 50 is provided at the right end of the.

3 is a vertical sectional view of the throttle grip device 50, FIG. 4 is a sectional view taken along line IV-IV of FIG. 3, and FIG. 5 is a sectional view taken along line VV of FIG. is there.

As shown in FIGS. 3 to 5, the throttle grip device 50 is rotatably inserted mainly into the right end portion of the handlebar 40, and a slip grip 51 such as rubber is wound around the throttle grip 52. And this throttle grip 52
A throttle rotor 53 integrally provided at one end of
The throttle cable 54 has one end locked to the throttle rotor 53 and the other end connected to the carburetor 47a.
And a throttle case 55 that accommodates the throttle rotor 53.

Fitting protrusions 56 are formed at regular intervals, for example, at 60 ° intervals on the outer peripheral surface of the end of the throttle grip 52 on the throttle case 55 side. In addition, these fitting protrusions 5
6 is a first fitting protrusion 56a clockwise in FIG. 4 for convenience.
~ The sixth fitting protrusion 56f.

A fitting recess 57 is formed on the inner peripheral surface of the throttle rotor 53 at a position corresponding to the fitting projection 56. It should be noted that these fitting recesses 57 are arranged in the clockwise direction in FIG. 4 for convenience sake, from the first fitting recess 57a to the sixth fitting recess 57.
f.

Then, by fitting the throttle rotor 53 to the throttle grip 52, the two rotate together. A protrusion 58 is formed on the outer peripheral surface of the throttle grip 52 on the throttle case 55 side, and the protrusion 58 abuts on a stopper 59 provided in the throttle case 55.
Is fully closed. Further, the fully open position of the throttle grip 52 is positioned by a stopper (not shown) provided on the carburetor 47a side.

An end piece 60 is attached to the end of the throttle cable 54 on the throttle case 55 side. Further, the throttle rotor 53 has a plurality of locking holes 61 for locking the end pieces 60. Note that these locking holes 61 are referred to as first locking hole 61a to fifth locking hole 61e in the clockwise direction in FIG. 4 for convenience. First locking hole 61
The a is arranged without an angle difference from the first fitting recess 57a. Further, the second engagement hole b is arranged with an angle difference of 12 ° from the second fitting recess 57b. Furthermore, the third locking hole c61
Are arranged with an angle difference of 24 ° from the third fitting recess 57c. Furthermore, the fourth locking hole 61d is arranged with an angle difference of 36 ° from the fourth fitting recess 57d. The fifth locking hole 61e and the fifth fitting recess 57e are 48 ° apart.
They are arranged with an angle difference of.

Next, the operation of this embodiment will be described.

For example, the first fitting projection 56a of the throttle grip 52 and the first fitting recess 5 of the throttle rotor 53.
7a and the end piece 60 of the throttle cable 54 is locked in the first locking hole 61a as a basic state. In this state, the length of the throttle cable set in the throttle case 55 is L ₀ , and the throttle When the cable winding diameter φ of the rotor 53 is 32 mm, the first fitting protrusion 56a and the second fitting recess 57b are fitted to each other, and the end piece 60 of the throttle cable 54 is fitted into the second locking hole 61b.
By locking the, the length L ₀ of the throttle cable set becomes L ₀ +3.35 mm. In addition, the first fitting protrusion 5
6a and the third fitting recess 57c are fitted to each other, and the third locking hole 61
By locking the end piece 60 of the throttle cable 54 to c, the throttle cable set length L ₀ becomes L ₀ +6.70 mm. Hereinafter, the fitting recess 57 for fitting the first fitting projection 56a is shifted to the fourth and fifth, and the locking hole 61 for locking the end piece 60 is similarly the fourth and fifth.
Throttle cable set length L ₀
Each _L 0 + _10.05mm, extending at L 0 + 13.40 mm, and 3.35mm increments.

Further, the first fitting projection 56a and the first fitting recess 57a are fitted to each other, and the end piece 60 of the throttle cable 54 is locked to the second locking hole 61b, whereby the throttle cable set length L _{0 is} set. Is L ₀ +20.11 mm
Becomes Hereinafter, the locking hole 6 for locking the end piece 60
By shifting 1 from the 3rd, 4th, and 5th, it is possible to extend the throttle cable set length L ₀ in steps of 20.11 mm.

Further, the fitting recess 57 for fitting the first fitting protrusion 56a is displaced from the second to fifth parts, and the end piece 60 is formed.
By further shifting the locking hole 61 for locking the throttle cable set length L ₀ , many variations can be obtained.

As shown in FIG. 6, the fitting protrusion 56 of the throttle grip 52 and the fitting recess 57 of the throttle rotor 53 are formed at every 45 °, and the fitting recess 57 and the locking hole 61 of the throttle rotor 53 are formed. Angle difference of 9 °, 1
When set to 8 °, 27 ° ..., the throttle cable set length L ₀ can be extended in 2.51 mm increments. Further, as shown in FIG. 7, the fitting protrusion 56 of the throttle grip 52 and the fitting recess 5 of the throttle rotor 53 are provided.
7 is formed at every 30 °, and the angle difference between the fitting recess 57 and the locking hole 61 of the throttle rotor 53 is 6 °, 12 °, 18 °.
When set to ° ... Throttle cable set length L ₀
Can be extended in 1.68 mm increments.

As a result of the above, the fitting protrusion 56 and the fitting recess 5
7 and the locking hole 61 are changed, the variation of the throttle cable set length L ₀ is increased, and the throttle grip device 50 changes from the carburetor 47a.
Since the length of the throttle cable 54 up to the above can be delicately changed, the common throttle cable 54 can be used even in the models having different carburetors 47a. Further, since the variation width of the throttle cable set length L ₀ can be reduced by increasing the number of the fitting projections 56 and the fitting recesses 57, the play amount of the throttle cable 54 can be reduced without using the adjuster which has been conventionally used. Can be adjusted. By eliminating the need for a conventional adjuster, the number of parts is reduced, resulting in cost reduction and prevention of tampering with the adjuster.

Further, as shown in FIG. 8, the winding diameter φ ₁ ,
_Two throttle rotors 71 and 72 having different φ ₂ are integrally formed so that the throttle rotors 71 and 72 can be fitted to the throttle grip 73 in both directions.
By providing a plurality of locking holes 61 in the throttle rotors 71 and 72 as shown in the above embodiment, the variation of the length of the throttle cable 74 is further increased.

[0031]

As described above, according to the throttle grip device for a motorcycle of the present invention, the throttle grip rotatably attached to the end portion of the handlebar,
A throttle grip device for a motorcycle, comprising: a throttle rotor provided at one end of the throttle grip; and a throttle cable having one end locked to the throttle rotor and the other end connected to a carburetor. Fitting projections are formed on the outer peripheral surface of the end portion at equal intervals, and fitting recesses are formed at positions corresponding to the fitting projections on the inner peripheral surface of the throttle rotor to rotate the throttle rotor integrally with the throttle grip. While movably fitted, an end piece is attached to an end portion of the throttle cable, a plurality of locking holes for locking the end piece are formed in the throttle rotor, and each of the locking holes is Arranged with a certain angle difference from the fitting recess, and combining the fitting projection, the fitting recess, and the locking hole. Since the length of the throttle cable from the throttle rotor to the carburetor is changed by changing the, At the same time, the length of the throttle cable can be changed subtly, eliminating the need for an adjuster for adjusting the amount of play.

[Brief description of drawings]

FIG. 1 is a left side view of a motorcycle showing an embodiment of a throttle grip device for a motorcycle according to the present invention.

FIG. 2 is a view on arrow II of FIG.

FIG. 3 is a vertical cross-sectional view of the throttle grip device according to the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line IV-IV of FIG.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a sectional view of a throttle grip device according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a throttle grip device according to a third embodiment of the present invention.

FIG. 8 is a sectional view of a throttle grip device according to a fourth embodiment of the present invention.

FIG. 9 is a vertical cross-sectional view of a conventional general throttle grip device.

10 is a cross-sectional view taken along line XX of FIG.

FIG. 11 is a cross-sectional view of a conventional forced opening / closing throttle grip device.

[Explanation of symbols]

 31 Motorcycle 32 Body Frame 33 Engine 37 Steering Mechanism 40 Handlebar 47a Carburettor 50 Throttle Grip Device 52 Throttle Grip 53 Throttle Rotor 54 Throttle Cable 55 Throttle Case 56a to 56f Fitting Protrusion 57a to 57f Fitting Recess 60 Endpiece 61a to 61e Locking hole

Claims (1)

[Claims] 1. A throttle grip rotatably attached to an end of a handlebar, a throttle rotor provided at one end of the throttle grip, one end locked to the throttle rotor, and the other end being a carburetor. A throttle grip device for a motorcycle comprising a connected throttle cable, wherein fitting protrusions are formed on an outer peripheral surface of an end portion of the throttle grip at equal intervals, and the fitting protrusions are formed on an inner peripheral surface of the throttle rotor. While a fitting recess is formed at a corresponding position to rotatably fit the throttle rotor to the throttle grip, an end piece is attached to an end portion of the throttle cable, and the end portion is attached to the throttle rotor. A plurality of locking holes for locking the piece are formed, and each of the locking holes is at a certain angle with the fitting recess. The length of the throttle cable from the throttle rotor to the carburetor is changed by changing the combination of the fitting protrusion, the fitting recess, and the locking hole. A characteristic throttle grip device for motorcycles.