JPH0226265Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention is an improved throttle lever device for a brush cutter that controls the engine speed.

<Prior Art> In recent years, safety in work with power brush cutters has become particularly important, and in pursuit of this, brush cutters with various improvements have been developed and provided.

Under these circumstances, the first option that can be considered is one that is equipped with a trigger-type throttle lever to control the engine speed, which can greatly contribute to work safety measures.

This type of brush cutter has a lever that is linked to a wire that is connected to the engine's carburetor, so that when the lever is squeezed, the engine speed increases, and when the lever is released, the engine speed decreases. and,
A centrifugal clutch provided in the power transmission system to the cutter section ensures safety by stopping the rotation of the cutter when the number of revolutions falls below a predetermined number.

Now, if we pay attention to the positional relationship between the connected throttle lever and throttle wire, we can see that the throttle wire is stretched within the swinging plane of the lever, and the throttle wire is located directly below the operating rod. The lever is positioned so that it is sandwiched between this and the operating rod.

The wire passes through the inside of the grip, which is used to support the brush cutter during operation, and is located in front of the lever device.
For this purpose, there is a protrusion having a through hole on the peripheral surface of the grip between the grip and the lever (within the plane of lever swing).

The operating direction of the throttle lever and the pulling direction of the throttle wire are the same.

<Problems to be solved by the invention> Due to the structure near the throttle lever device as described above, the following problems arose.

Because the lever and throttle wire are located directly below the operating rod, the lever and lever holder must be connected to each other in order to ensure a swinging range (hereinafter referred to as the stroke) that allows the lever to operate sufficiently on the engine. The swing shaft of the lever, which is the connecting part to the lever, must be spaced apart from the operating rod, and the lever holder must be large. This poses a problem in terms of design and cost. Further, the protrusion having the through hole of the throttle wire is located within the plane of the lever swing, which further increases the size of the lever holder and makes the brush cutter less operable and less comfortable to grip.

<Means for solving the problem> Therefore, in order to solve the above problem, the throttle wire 11, which adjusts the rotation of the engine 1 in conjunction with the lever 8 swingably provided on the lever holder 9, is pulled. A throttle lever device for a brush cutter has been developed, which is characterized in that the direction is set outside the swinging plane of the lever 8, and a grip through which a throttle wire passes is provided in front of the grip.

<Function> With a throttle lever device having such a structure, the protruding part of the grip and the wire locking part of the lever are located outside the lever swinging plane, so even if the swinging shaft part is brought close to the operating rod, , the lever stroke can be secured.

<Examples> Examples of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a rear view of the throttle lever device of the present invention, and FIG. 2 is a side view showing the relationship with the grip. Figure 3 is a front view of the lever;
The figure is an overall perspective view of a brush cutter equipped with the device of the present invention.

A brush cutter equipped with the device of the present invention shown in FIG.
The blade 6 is rotated by an engine 1 via a clutch case 2, a shaft 4 installed inside a long operating rod 3, and a gear case 5 connected to the shaft 4.

A grip 7 is externally mounted near the end of the operating rod 3 on the engine 1 side of this brush cutter.
A lever holder 9 for the lever 8 is provided at the front end (in the direction toward the cutter 6). As can be seen in FIG. 2, the lever 8 is swingably attached to a lever holder 9 with a shaft 10, and the end of the lever 8 located inside the lever holder 9 is connected to a throttle wire 11. There are 12.

As shown in FIGS. 1 and 2, the feature of the present invention is that the lever 8 is located directly below the grip 7, and the throttle wire connecting portion 12 is provided outside the plane of the lever swing. Lever 8 that made this possible
An example of the shape is shown in FIG. Lever connection part 1
2 is provided outside the lever swinging plane, in other words, the throttle wire pulling direction is set outside the swinging plane.

Also, the grip 7 has a throttle wire 1.
A protrusion 14 having one through hole 13 is provided outside the swinging plane of the lever 8, like the wire connecting portion 12. In the example shown in FIG. 1, the lever connecting portion 12 is deviated from the pivoting plane of the lever by α≒30°.

<Effects of the invention> As detailed above, the present invention has made it possible to make the throttle lever device more compact, thereby greatly contributing to cost reduction and improved operability. Another benefit of this invention is that it improves the overall design of the product and the grip's comfort.

[Brief explanation of the drawing]

FIG. 1 is a rear view of the throttle lever device of the present invention, and FIG. 2 is a side view showing the relationship with the grip. FIG. 3 is a front view of the throttle lever, and FIG. 4 is an overall perspective view of a brush cutter equipped with the device of the present invention. 7... Grip, 8... Lever, 9... Lever holder, 10... Rocking shaft section, 11... Throttle wire, 12... Wire connection section, 13...
Through hole, 14... protrusion.

Claims (1)

[Scope of utility model registration request] A lever 8 swingably provided on a lever holder 9
The pulling direction of the throttle wire 11 that adjusts the rotational speed of the engine 1 in conjunction with the lever 8 is provided outside the swinging plane of the lever 8, and a grip 7 through which the throttle wire 11 passes is provided in front of the lever 8. A brush cutter throttle lever device featuring: