JPS59105944A - Choke lever for use in motorcycle or the like - Google Patents

Abstract

PURPOSE:To enable to manipulate a choke lever with ease while grasping a handle grip by hand, by disposing the choke lever near the shaft of a handle lever supported pivotally near the handle grip of a steering handle, in the manner that it is moved coaxially with a clutch lever. CONSTITUTION:Normally, a choke valve 71 is kept in inoperative state since a steel ball 45 inserted in a choke lever 40 is fitted in a point hole 61 formed in a point plate 60 by the force of a spring 44. Further, since the choke lever 40 is extended toward a handle grip 31, the lever 40 can be manipulated with ease by pulling it toward the handle grip 31 by a forefinger of a rider with the handle grip 31 being grasped by th rider's hand. After the engine is warmed up, the choke valve 71 is kept in inoperative state simply by bringing the steel ball 45 back to the initial position of the point hole 61 by moving back the choke lever 40 by a forefinger while grasping the handle grip 31.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a choke lever for a motorcycle or the like which is intended to improve operability.

2. Description of the Related Art In motorcycles, tricycles, and the like, choke levers for controlling the throttle opening of a carburetor are known to be disposed near a handle grip in order to improve operability.

However, since the choke lever is placed near the handle grip, from the operational point of view of the choke lever,
If possible, it would be convenient if the rider could operate the handlebar grip while still holding it, but especially when starting the engine by disengaging the clutch,
Since the choke lever must be operated with a rotational trajectory different from the clutch operation trajectory, better operability was desired.

The present invention has been made in view of the above points, and its object is to provide a choke lever for a motorcycle, etc., which can be easily operated while holding the handle grip. It is on offer.

To achieve all of these objectives, the present invention provides a choke lever that is pivotally supported near the shaft of a handle lever, such as a clutch lever, that is pivoted near the handle grip of a steering handle of a motorcycle, etc., and that controls the operating trajectory. It is characterized by being coaxial with the clutch lever.

A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings. Fig. 1 is a side view of the motorcycle, Fig. 2 is a plan view of the same, Fig. 3 is a plan view of the handle grip, and Fig. 4 is a side view of the motorcycle.
It is a sectional view taken along line 4-4 in the figure.

A hesode tube 3 is provided at the front end of the motorcycle 10 body frame 2, and a fuel lamp 4 is installed over a main pipe 21 extending rearward from the second part h of the head tube 3. The main pipe 21, the down tube 23 hanging downward from the bottom of the head tube 3, and the down tube 23. Left and right down tube lowers extending rearward from the lower end 24. ' 24 and left and right center tubes 25 and 25 that extend forward and upward from the rear end of the down tube lower 24 and continue to the rear end of the main pipe 21. The engine 6 is mounted in the space formed by the left and right center tubes 25 and 25. .

A carburetor 7 is disposed at the rear of the engine 6, and a carburetor 7 is installed at the rear of the engine 6.
A beam 26 is installed on the lower part of the bridge 25.

On the other hand, the rear fork 9 that supports the rear wheel 8 is pivotally supported near the bottom of the center tube 25.
A mounting unit 2γ is interposed between the main pipe 21 and the rear part of the main pipe 21.

A front fork 11 that supports the front wheel 10 is steered and supported by the head tube 3 provided at the front end of the vehicle body frame 2, and is integral with the front fork 11 and is attached to a top ridge 12'' facing the head tube 3''. A steering handle 13 manufactured by Hahive is attached.

Handle grip 31.3 of steering handle 13
1, the right grip 31 has a brake lever 14,
Clutch levers 15 are pivotally mounted to the left grip 31 so as to face forward.

In the present invention, the choke lever 40 is arranged coaxially with the clutch lever 15 provided on the left handle grip 31. This is shown in FIGS. 3 and 4.

A headlight and blinker lamp switch box 16 is provided at the base of the handle grip 31, and a handle lever plug 17 is fixed to a noddle pipe 32 located closer to the center than the switch box 16. The handle lever bracket 17 has a U-shaped cross section with upper and lower gray plates 17a, 17a open to the front, and is bolted 18 to the handle pipe 32 from the upper and lower blade directions.

A clutch lever 15 or a base 51 is pivotally mounted between the plates 17a and 17a portion of the handle lever bracket 1γ facing forward from the handle pipe 32 with a bolt 52 and a nut 53 so as to be horizontally swingable. 1
The grip arm 54 of No. 5 should face the front of the handle grip 31 in an expanded state.

This clutch lever-15 number i; +551 J2vr
c The base portion 41 of the choke lever 40 is coaxially pivoted with the aforementioned bolt 52 and nut 53 so as to be horizontally swingable with a thin coil-shaped point plate 60 interposed therebetween.

The point plate 60 has a substantially fan-shaped 'xh1.' that expands forward. is fixed unrotatably, and has three point holes 61 and 62 radially equidistant from the center of the bolt 52.
．． 63 is perforated.

On the other hand, the base 41 of the choke lever 40 has a certain thickness of metal and extends forward from the point plate 6o, and is slidably overlapped with the point plate 601, and the grip arm 42 of the choke lever 40 is a handle grip. 31 to 1i1iJ <yo5K[, it is always facing toward the rear on the grip arm 54 of the clutch lever 15.

The thick base 41 of the choke lever 40 has a relatively large diameter ball hole 43 at the same distance as the point hole 61.
A steel ball 45 is inserted into this ball hole 43 via a spring 44, and the diameter thereof is sufficiently larger than that of a point chi+6=rivet.

One end of a choke cable 46 is connected to the tip of the base 41 of the choke lever 4o by a suitable fastener, while the other end of the choke cable 46 is connected to the choke valve in the carburetor γ as shown in FIGS. 5 and 6. 71 operating mechanism.

1:! If the gear breech is of the pie starter type, the choke cable 46 is connected to the piston type choke valve 11 via the link lever 72, and the choke valve 71
By the upward movement of t;fE, the mixture t;fE is supplied to the suction passage 73.

Next, the operation of the choke lever 40 will be described.

First, in the flat '1'l'r mode, the steel ball 45 provided in the choke lever 40 or the right point hole 61 bored in the point plate 60 is pressed into engagement with the elastic force of the stelling 44, so the choke valve is closed. The non-operating state of 40 is maintained.

The choke lever 40 is operated using its grip arm 42.
is facing toward the handle grip 31 like the grip arm 54 of the clutch lever 15, so while the rider is holding the handle grip 31, for example, with his eight fingers, he can pull the handle grip 31 forcefully. Just that is fine. That is, since the choke lever 40 is placed at hand,
The choke lever 40 can be easily operated while holding the handle grip 31 without releasing the hand.

Moreover, since the point plate 60 is also drilled with a center point hole 62 and a left point ball 63, the steel ball 45 is engaged and stopped in each hole 62, 63 and held and controlled, for example, in the left point hole 63. The choke lever 40 is located at the position where the steel ball 45 engages.
If the maximum operation limit is taken as the intermediate operation position, and the position where the steel ball 45 engages with the central point hole 62 is defined as the intermediate operation position,
Holding control in each operating state is reliably performed.

After the engine 6 has warmed up, do the opposite to the above: While holding the handle grip 31, push the choke lever 40 back forward with your index finger, and push the choke lever 40 back to the initial position, which is the right point hole 61.
The choke operation is released by simply engaging the 45 steel balls, and the non-operating state of the choke valve 71 is maintained as described above.

As described above, the rotation center line of the choke lever 40, which has good operability, is aligned with the clutch lever 15, which is a handle lever.
In other words, the choke lever 40 is arranged coaxially with the clutch lever 15 by one bifocal bolt 52, so that the choke lever 40 is arranged coaxially with the rotation center line of the clutch lever 15. The choke lever 40 can be installed together with the clutch lever 15 by tightening one set of bolts 52 and nuts 53 without requiring any new parts, thereby reducing the number of parts and simplifying assembly work. can also be achieved.

Historically, the point control point for controlling the stop position of the choke lever 40 is 1-60k, which is interposed between the choke lever 40 and the clutch lever 15 and assembled coaxially with the bolt 52 and nut 53. In addition to being able to operate the above-mentioned tracing choke lever 40 smoothly and precisely, it is also extremely advantageous in terms of reducing the number of parts and simplifying assembly work.

In the embodiment, the number of point holes is 61 (31 in total), but the number can be increased if necessary, and the present invention is applicable not only to motorcycles but also to tricycles. Of course.

As is clear from the following explanation, according to the present invention, the choke lever is all pivoted near the axis of the handle lever (clutch lever in the embodiment) which is pivoted near the steering wheel grip.・The rotation locus of the handle lever and choke lever operations are approximately coaxial, and...
The operability has been improved in that the choke lever can be operated perfectly while holding the handle grip.

Further, as in the embodiment, if the choke lever is coaxially supported with the handle lever, better operability can be obtained, and it is also advantageous in terms of reducing the number of parts to be installed and simplifying the assembly work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the motorcycle, FIG. 2 is a plan view thereof, FIG. 3 is a plan view of the handle grip, and FIG. 4 is a side view of the motorcycle. 4-4 line sectional view,
Fig. 5 is a partially cutaway side view showing an example of a carburetor;
The figure is a view taken in the direction of arrow 6 in FIG. 5. In addition, in the drawing, 1 is a motorcycle, 13 is a steering handle, 31 is a handle grip, 15 is a handle lever, 5
2 is a pivot bolt, 40 is a choke lever, and 60 is a point plate. Patent applicant Honda Motor Co., Ltd.

Claims (1)

[Claims] Pivotally supported near the shaft of the handle lever that is pivoted near the handle grip of the steering handle of a motorcycle, etc.
Choke lever for motorcycles etc. consisting of 0