JPH0318673Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a throttle lever device for an engine, and in particular, the throttle lever position can be easily set to a good position for engine starting by pressing a button. This is to prevent obscene pushing of the button.

[Conventional technology]

Generally, a string pull start method or a recoil starter method is often used to start the engine of equipment using a small engine, such as a brush cutter. The reality is that the throttle lever is pulled to the idling state by a governor spring or return spring.

Therefore, when starting the engine, the throttle lever is pulled and the carburetor throttle opening is increased to make it easier to start the engine, but while the throttle lever is being pulled with one hand, the starter grip is Pulling the engine is an extremely difficult startup task.

On the other hand, there have been known models with a stopper device that pulls and holds the throttle lever to a predetermined position when starting the engine, but in this case, when holding the throttle lever with the stopper, There is no need to rotate the throttle lever to the optimum starting position each time the engine is started, which is extremely inconvenient.

[Problem that the invention attempts to solve]

In this invention, within the rotation operation range of the throttle lever, rather than selectively manually operating the throttle lever to the optimum position at the time of starting each time the engine is started, a button is placed opposite to the throttle lever, By pressing this button, the throttle lever can be accurately set to the optimum position for starting with a single touch operation, and a protective wall is attached to the button to prevent it from being pushed in unnecessarily. It's because I let it happen.

[Means for solving problems]

In order to set the optimal position of the throttle lever when starting the engine by pressing the button with a single touch, and to prevent the button from being pushed in unnecessarily at times other than when starting the engine, the protruding part of the button The reason is that a protective wall having approximately the same height as the protruding height of the button is provided in the vicinity.

The protective wall is formed into a cylindrical or semi-cylindrical shape that surrounds the button and has a notch into which the fingertip can be freely inserted.

[Effect]

The button of this invention has a tapered tip, and when the button is pushed in against the return spring, the throttle lever pivots by the insertion of the tapered part. The throttle lever is rotated to the optimal setting position for starting the engine, and the pushbutton is protected by the protective wall attached to it when the engine is not starting. Prevents being pressed inadvertently.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the drawings.

In Fig. 1, the reference numeral 1 indicates a pipe-shaped attachment part such as a frame or a handle of a device equipped with a small engine, such as a brush cutter, and a unit is attached to this attachment part. A throttle lever part 2 is attached.

The throttle lever part 2 includes a stay 4 fixed to the mounting part 1 with screws 3, a throttle lever 6 rotatably held on the stay by a pivot shaft 5, and a throttle lever 6 that is used to start the engine. It consists of a button 7 that can be rotated with one touch to the optimum position at the time, a protective wall 8 installed near the button, and an electrical switch 9 that stops the rotation of the engine. The tip of a Bowden wire 10 is connected to the tip of the throttle lever 6 within the stay 4.

2 and 3 show the internal mechanism of the throttle lever section 2 and its operating state.

A cam hole 11 is provided at the position of the throttle lever 6 facing the bushing button 7, and when the bushing button 7 is pushed in the direction shown, the bushing button 7
Tapered part at the tip (see Figures 4 and 5)
7a comes into pressure contact with the edge of the cam hole 11, and the throttle lever 6 side is rotated counterclockwise in the drawing about the pivot 5 by the eccentricity between the bushing button 7 and the cam hole 11. Therefore, the throttle lever 6 is rotated from the idling position N to the engine starting position S, and when the bushing button 7 is pressed, the tip of the bushing button passes through the cam hole 11, and the flange of the bushing button 7 passes through the cam hole 11. 7b reaches the lower side of the cam hole 11.
Next, when the pushbutton 7 is released, the return force of the pushbutton 7 itself and the return force of the throttle lever 6 cause the flange 7b to return to the throttle lever 6.
The two members are locked together by being engaged with the lower surface of the member.
This relationship is shown in FIGS. 3 and 5.

Thus, when starting the engine, pushbutton 7
The position of the throttle lever 6 can be easily set to the starting position S by simply pushing the throttle lever 6 in one-touch operation, and from then on, the user can concentrate only on starting the engine.

In the above, the button 7 is returned to its original position by the spring 7c attached to it, and the throttle lever 6
The return of the throttle lever 6 is carried out by a spring 7c attached thereto, and the return of the throttle lever 6 is carried out by a spring 12 provided opposite thereto.

Next, the throttle lever 6 set at the starting position S can be operated by rotating the throttle lever 6 in the counterclockwise direction shown in the figure from the same position.
The rotational power of the engine can be increased manually. In addition, since the cam hole 11 moves around the pivot 5 in response to the operation, the lock caused by the engagement of the flange 7b by the bushing button 7 is released.
The button 7 is moved back to the return position. The throttle lever 6 can also be freely adjusted within the rotation range up to the maximum adjustment position M shown in FIG.

On the other hand, near the protruding position of the bushing button 6 of this invention, a protective wall 8 for protecting the protruding part of the bushing button 6 is provided on the stay 4 side so as to surround the protruding part.

In the case of the above embodiment, the protective wall 8 has a shape that does not obstruct the pressing of the button 7 by the fingertip and is erected in a semicircular shape. Appropriate notch 8
It may be configured to include a.

Further, the protective wall 8 may be provided integrally with a guide wall 14 that supports the sliding of the button 7, for example, like the protective wall 13 shown in another example in FIG. Further, the protective wall 13 may be configured with a cutout similar to that of the above embodiment, if necessary.

[Effect of idea]

With the throttle lever device of this invention, the throttle lever can be quickly and easily set to the engine starting position via the pushbutton which can be locked with one-touch operation as described above. Moreover, a protective wall is attached to the protruding part of the button, which prevents the protruding button from coming into contact with obstacles etc. while working on equipment equipped with a small engine. This eliminates the inconvenience of being unnecessarily pressed due to accidental contact during work.

Therefore, this can prevent the occurrence of danger due to rapid engine speed, which would be caused by the button being pushed in improperly and the throttle lever being rotated in the direction of engine acceleration against one's will. .

Furthermore, since the protective wall is constructed so that it is easy for a finger to enter, the operability of the button will not be impaired.

[Brief explanation of the drawing]

Fig. 1 is a front view of a throttle lever device showing an embodiment of this invention, Figs. 2 and 3 are explanatory diagrams showing the operating state of the throttle lever, and Fig. 4 is a partially cutaway view. FIG. 5 is a side view of the throttle lever device shown in FIG. 6...Throttle lever, 7...Button button,
8, 13...protective wall, 8a...notch, 14
...Guide wall.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A button is provided opposite to a manually adjustable throttle lever, and when the button is pressed, the throttle lever can be rotated to a preset angle position. In addition, the engine throttle lever device is characterized in that a protective wall for protecting the protruding part of the bushing button is provided at a position where the protruding part of the bushing button faces the outer periphery of the bushing button. (2) A request for registration of a utility model, characterized in that, in a protective wall that protects a protruding portion of a bushing button corresponding to a throttle lever, the protective wall is constituted by a guide wall that guides the pushing of the bushing button. A throttle lever device for an engine according to item 1. (3) A request for registration of a utility model characterized in that a protective wall that protects a protruding portion of a bushing button corresponding to a throttle lever is provided with a notch for pushing the bushing button. A throttle lever device for an engine according to item 1. (4) A request for registration of a utility model characterized in that the protective wall that protects the protruding part of the bushing button corresponding to the throttle lever is formed in a cylindrical shape with approximately the same height as the bushing button in the protruding state. A throttle lever device for an engine according to item 1.