JPS6156012A - Cooperation of reaping blade lever and running lever in lawnmower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an interlocking device for a cutting blade lever and a travel lever in a lawn mower.

(b) Conventional technology Conventionally, an engine is mounted on the upper surface of a casing supported by wheels, and a drive shaft is suspended from the engine.
There is a type of lawn mower in which a cutting blade is attached to the lower end of the drive shaft so that it can rotate in a horizontal plane.

For example, the details are shown in Utility Model Publication No. 59-1466, etc., but the key point is that the mower blade is started and stopped, and the traveling device is started (self-propelled) and stopped using a lever provided at the hand of the handle. The machine can be controlled remotely, allowing mowing and driving to be controlled at any time.

(c) Problems to be solved by the invention By the way, in conventional grass cutters of this type, as seen in the above-mentioned Utility Model Publication No. 59-1468, etc., when one machine is run on its own, it is always necessary to cut grass. If you turn on the travel lever, you can also turn on the mower lever at the same time (on the contrary.

(When the travel lever is turned off, the cutting blade lever is also turned off.) The two were mechanically engaged and interlocked.

However, 9. For example, when you want to move the blade to the destination by itself without mowing the grass, when one machine is running on its own, it is not necessarily the time to rotate the cutting blade; rather, it can be operated separately. Sometimes it's preferable.

(d) Means for Solving the Problems Therefore, the present invention has been developed by operating the mower blade's start and stop (1i) by tilting the mower blade lever, and also by tilting the travel lever for self-propelling and stopping of the nine mowers. In the lawn mower, the travel lever is installed at a rear position of the cutting blade lever, and is configured to be movable in the left and right direction, so that it can be freely engaged with and detached from the cutting blade lever when tilting the mower. By providing an interlocking device for the cutting blade lever and the travel lever in a lawn mower, which is characterized in that it is set as much as possible, the above-mentioned
This solves the problem.

(E) Effect With this, if the travel lever remains in its left-right position or is moved in the left-right direction and is tilted back and forth to turn it on or off, it engages with the cutting blade lever. This allows the mower blade lever to be turned on and off at the same time.

Furthermore, if you do not want this interlocking, you can move the travel lever in the opposite direction to the left and right, or leave it in the same position and move it forward/backward (f'j) to turn it on and off by itself. (The mower blade lever can also be turned on and off.)
(must be operated separately).

(F) Examples Examples of the present invention will be described below with reference to the drawings.
FIG. 1 is a partial cross-sectional rear view of the handle area of the lawn mower according to the present invention, FIGS. 2 to 4 are partial cross-sectional side views showing the combination of operations of the cutting blade lever and the travel lever, and FIG. 5 6 is a partially sectional rear view showing another embodiment, and FIGS. 6 and 7 are a side view and a plan view of the mower.

The mower has a disc-shaped casing 3 equipped with front wheels 1, 1 and rear wheels 2, 2, and an engine 4 is mounted on the center of the upper surface of the casing 3.

By the way, this casing 3 has a circular B shape as described above, but it also has a spiral cylindrical part that swells at the rear along its outer peripheral edge.
Further, a hollow space is formed in the inside, which serves as a discharge passage 5 for the cut grass, and the rear end of the discharge passage 5 is opened to serve as a discharge port 6.

A catch bag 7 is connected to the rear of the outlet 6 so that the grass released from the outlet 6 can be collected therein.

Further, a handle 8 is moved backward from the rear of the casing 3, and a cutting blade lever 9, a travel lever 10, etc., which will be described below, are mounted on this handle.

That is, a drive shaft 11 directly connected to the engine 4 hangs down inside the casing 3, and a cutter knife-shaped cutter 2 is attached to the lower end of the drive shaft 11 via a clutch mechanism (not shown). It is.

The intermittent transmission of power from the drive shaft 11 to the cutting blade 12 and the starting and stopping of the cutting blade 12 are performed by intermittent operation of the clutch mechanism described above. This is done by moving the cutting blade lever 9 forward 1 and tilting it.

Furthermore, since the power of the drive shaft 11 is transmitted to the rear axle connected to the rear wheels 2.2 via another clutch mechanism (not shown), if this clutch mechanism is engaged or engaged, one aircraft can move ( (self-propelled) and can be stopped. Therefore, this is performed in the same manner (via the wire 14, etc.) by tilting the travel lever 10 back and forth.

By the way, regarding the relationship between the mower blade lever 9 and the travel lever 10, the travel lever 10 is installed behind the mower blade lever 9, and is configured to be movable in the left and right directions, so that when the mower blade lever 9 is tilted, the travel lever 9 It is designed so that it can be freely engaged and detached.

That is, behind the handle 8, which is shaped like a frame with its rear end closed, a travel lever 10, which is also rod-shaped, is attached to support members 15 on both sides.
16, it is pivoted so that it can be tilted forward and backward, and also movable in the left and right directions.

Next, in such a configuration, a cutting blade lever 9 is provided between the handle 8 and the travel lever 10, and the base of this cutting blade lever 9 can be tilted back and forth with respect to the support member 15. The handle 8 is provided in a cantilevered shape with its tip extending toward the center of the handle 8. A small portion of the tip thereof is made to be able to engage with a portion of the traveling lever 10. At this time, the horizontal movement of the travel lever 10 is always urged toward one end by the spring 17, etc., but due to the difference in the horizontal movement structure and the intervening location of the spring 17, the mower blade lever 9 On the other hand, there are two types: one that is always in the engaging position (see Figure 1) and one that is always in the disengaging position (see Figure 5).

Therefore, in some cases, the travel lever 10 is engaged with the cutting blade lever 9 due to the action of the spring 17,
When the travel lever 10 is tilted, the mower blade lever 9
However, if the travel lever 10 is moved in the direction against the spring 17 and disengaged from the cutting blade lever 9, only the travel lever 10 can be operated independently. (Of course, it is also possible to operate the mower blade lever 9 alone.)
.

In another case, the spring 17 acts to disengage the travel lever lo from the cutting blade lever 9, and if the state remains normal, the travel lever 1o will be tilted down by itself. If you move this in the direction that resists the spring 17,
It engages the cutting blade lever 9.

This is designed to be pulled down by one at the same time.

Note that this selection is arbitrarily made according to the specifications of one work or the preferences of the two workers.

By the way, both the mower blade lever 9 and the travel lever lo are tilted forward, that is, the position where they touch the rear of the handle 9 is the operation on position, and the third operator holds it together with the handle 8 to keep it in the on state. However, if you release your hand, they will automatically tilt back and return to the off position.

(G) Due to the effects of the invention, by engaging the travel lever lO with the cutting blade lever 9 or disengaging it,
The rotation of the cutting blade 12 and the running of the machine can be linked only by operating the travel lever 10, or the rotation of the cutting blade 12 can be linked without rotating.
Since it is possible to have the machine run only (it is also possible to rotate only the cutting blade 12 independently), the most suitable one can be selected depending on the grass situation, work style, land conditions, etc.

In other words, for normal mowing work on a wide flat area, the travel lever 0 can be left in the same position in the left and right direction, or moved in the left and right direction and kept engaged with the cutting blade lever 9 at all times. 5 The mower blade 12 is rotated at the same time as the travel lever 10 is turned on (see Fig. 2), and the operation becomes a cylindrical path, increasing efficiency.
In places where maneuvering requires attention, such as on slopes, uneven ground, and places with obstacles, the travel lever 10 remains off, that is, the movement control of the three machines is carried out by operating only the cutting blades 12 by hand (the first (Refer to Figure 3) 1) The work will be made more skillful and 1) smoother. Furthermore, when transporting this mower to a destination in a car, leave the cutting blade lever 9 as it is and tilt the travel lever 10 forward in the same position or move it left and right. By letting
Since it can be operated independently without engaging the cutting blade lever 9 (see Fig. 4), this is not only easy but also leads to labor saving and speeding up.

[Brief explanation of drawings]

The drawings show embodiments of the invention. FIG. 1 is a partial cross-sectional rear view of the handle area of the lawn mower according to the present invention, FIGS. 2 to 4 are partial cross-sectional side views showing the combination of operations of the cutting blade lever and the travel lever, and FIG. 5 6 and 7 are the same (partially cross-sectional rear view) showing another embodiment, and FIGS. 6 and 7 are an opening view and a plan view of the mower. ...Kariblade patent applicant Seirei Kogyo Co., Ltd. agent Patent attorney Yoshi Itano Figure 3 Akebono] Figure 4

Claims (1)

[Claims] A mower in which the mower blade (12) is started and stopped by the forward and backward tilting motion of the mower blade lever (9), and the mower's self-propulsion and stopping are also operated by the forward and backward tilting motion of the travel lever (10). In addition to installing the travel lever (10) at a rear position of the mower blade lever (9), the travel lever (10) is configured to be movable in the left and right direction, and is engaged with and disengaged from the mower blade lever (9) when the tilting operation is performed. An interlocking device for a mowing blade lever and a travel lever in a lawn mower, characterized in that the settings are set as freely as possible.