JPS6174514A - Arrangement structure of operation levers in grass reaper - 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 the arrangement structure of operating levers in a lawn mower.

(b) Conventional technology Conventionally, an engine is mounted on the upper surface of a casing supported by wheels, a drive shaft is suspended from this engine, and a cutting blade is attached to the lower end of this drive shaft so that it can rotate in a horizontal plane. Structured lawn mowers exist and have been used primarily for mowing lawns at home.

For example, the details are shown in Utility Model Publication No. 59-1466, etc., but the point is that the starting and stopping of the cutting blade and the starting (self-propelled) and stopping of the traveling device are controlled by the It is designed to be able to be operated at rapid intervals using a control lever, allowing mowing and running to be controlled at any time.

(c) Problems to be solved by the invention By the way, with this conventional heel mower, as seen in the above-mentioned Utility Model Publication No. 59-1466, etc., when the nine machines are self-propelled, they are always mowing. If so, when you turn on the travel lever, you can also turn on the mower blade lever at the same time (so that you can't turn on the travel lever alone).

The two were mechanically engaged and interlocked.

9 In order to be able to operate the machine safely even for people who are not afraid of operating machines, these levers should be able to be held together with the handle during the 9 work, and both levers will return to the off position when the hands are released. death.

This is to stop the machine from mowing or mowing.

However, 1. For example, when moving the mower to its destination without mowing the grass, when the mower is self-propelled, it is not necessarily the time to rotate the mower blades; rather, they can be operated separately. Sometimes it's preferable.

(d) Means for Solving the Problems Therefore, the present invention provides a mower blade lever that rotates around the fulcrum axis toward the side of the swinging portion of the handle to start the mower blade, and a mower blade lever that rotates around the fulcrum axis toward the side of the swinging portion of the handle. In a lawn mower or the like equipped with a travel lever that rotates toward the side grip portion of the handle in the same direction as the cutting blade lever to start the travel device, both levers can be rotated independently of the other lever, Set the rotation trajectories of both the lateral grip parts of the cutting blade lever and the travel lever that correspond to the lateral grip parts of the respective handles, and set the end portions of these rotation trajectories that approach the handle to overlap and match. By providing a lawn mower characterized by the following features, the problems noted in # are solved.

(E) Effect As a result, both the mower blade lever and the travel lever can be rotated independently of the other, and mowing work and machine travel can now be done independently. At the position in contact with the rear of the handle where the lever is turned on, their rotational trajectories overlap and coincide, so no matter which lever is turned on first, it will form a mass with the handle and be gripped simultaneously with all five hands. In addition, the trajectories overlap only at the end, so if you bring one lever to a certain position (the position where the rotation!lL traces intersect), you can move the other lever. It is also possible to engage this and rotate it in conjunction with it.

(F) Examples Examples of the present invention will be described below with reference to the drawings.
1 and 2 are a partially sectional side view and a rear view showing the relationship between the handle and the operating lever of the mower according to the present invention, and FIGS. 3 and 4 are a side view and a plan view of the entire mower. be.

The mower has a disc-shaped casing 3 equipped with a front wheel 1.1 and a rear wheel 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 round shape as described above, but in addition, it has a bulge at the rear along its outer peripheral edge. It has a flI-wound cylindrical part, and furthermore, a cavity is formed in the inside thereof, and this is used as a discharge passage 5 for the cut grass, and the rear end of this discharge passage 5 is opened, and this is There is a discharge port 6.

A gear 7 is connected to the rear of the outlet 6 so that the grass discharged from the outlet 6 can be collected in this width.゛Again. casing 311
The handle 8 is rearwardly moved from the handle 8, and various operating levers such as a cutting blade lever 9 and a travel lever 10, which will be explained below, are mounted on the handle 8.

In other words, the drive is directly connected to the engine 4! +I+ 11
hangs down inside the casing 3, and a cutter knife-shaped cutting blade 12 is attached to the lower end of the drive shaft 11 via a clutch opening groove (not shown).

Then, 1iIri of power from the drive shaft 11 to the cutting blade 12
In other words, the mower blade 12 is started and stopped by intermittent operation of the clutch mechanism, which is controlled by the wire 13.
This is done by rotating the cutting blade lever 9 back and forth via the above-mentioned lever.・ In addition, 'gIA movement! ! The power of l111 is rear wheel 2.2
A separate clutch mechanism (not shown) is attached to the rear axle connected to the
Since the transmission is via the IC), this clutch +
If k is intermittent, the nine aircraft can run (self-propelled) and stop, but this is also done by rotating the travel lever 10 back and forth via the wire 14 or the like.

By the way, this invention has the following features: 1. In such a configuration, the mower blade lever 9 and the travel lever 10
The rotation locus is set so that each can rotate independently of the other.

That is, support members 15.
16 is attached, and both side grips 9a and 10a of the cutting blade lever 9 and the traveling lever 1o are respectively attached to the support member 15.16 so as to be rotatable back and forth. In this case, in addition to providing the fulcrum shaft 17 of the mower blade lever 9 and the fulcrum shaft 18 of the travel lever 10 separately (the fulcrum shaft 17 of the mower blade lever 9 is installed at the rear), their lengths, etc. The rotational trajectories (A) and (B) of the side gripping portions 9a and 10a are made to be different from each other so that they do not interfere with each other. However, among these rotational trajectories (A) and (B),
At the rear end portion of the handle 8, the protrusions coincide with each other, and when both the lateral grip portions 9a, 10a of the levers 9, 10 are both in the operation on position, they form a lump together with the lateral grip portion 8a of the handle 8. (See Figure 1).

In addition, considering ease of use and safety, the travel lever 10 is made into a closed frame like the handle 8 and is supported by both support members 15 and 16, but the mower lever 9 is , in case of cantilever support supported by only one support member 15 (see Fig. 2), in the case of the opposite configuration, or in case of case of cantilever support for both levers 9 and 10, etc. There are several possible configurations.

Furthermore, the rotation gL trace (A) of the horizontal grip part 9a of the cutting blade lever 9
In addition to the above-mentioned configuration, even if the fulcrum shafts 17.1B, 18 are the same, the structure in which the first half of the rotation trajectory (B) of the horizontal grip portion 10a of the traveling lever 10 does not overlap,
It is also conceivable to make the parts 9 and 10 of a telescoping type that expands and contracts as they rotate.

(g) Due to the effects of the invention, both the cutting blade lever 9 and the travel lever 10,
Each can be operated independently, depending on the grass growth, terrain, etc.

It is possible to perform a variety of traveling tasks that cannot be performed with conventional absolute interlocking types.

In other words, in areas where it is difficult to drive on slopes or where there are obstacles (for example, cutting along the edges of trees, fences, fences, etc.).

(e.g. when the length of the grass stalks to be cut is long and the cutting resistance becomes large and the horsepower tends to be insufficient), by leaving the drive lever 10 off and turning on only the cutting blade lever 9, the machine can be moved with one hand push. You can maneuver the grass as you like, cut grass efficiently, and do not damage the grass or the opponent's natural features. Also, in cases where this mower is simply transported to a destination.

This means that it is only necessary to turn on the drive lever 10 while leaving the mower blade lever 9 off, which significantly reduces the effort and reduces horsepower consumption. This also prevents damage to machinery and other equipment.

And one lever 9. Which side grip part 9a, 10 of lO
Since both a and a overlap at the ends of their rotational trajectories (A) and (B), no matter which one is operated first, when holding the side grips 9a and 10a in the on position, Together with the side gripping portion 8a of the handle 8, it forms a single block, and all of these can be gripped by hand, and are no inferior to conventional grips.

Furthermore, in connection with this, the mower can be driven by itself by operating the travel lever 10 after starting the mower blade 12, and conversely, the mower can be driven by itself after one mower is driven by itself. This increases the range of two tasks.

Also, in this case, if you bring one lever to the rotation trajectory of the other lever, if you rotate the other lever, it will engage the other lever and make them move at the same time. Therefore, an interlocking configuration based on this can also be used.

[Brief explanation of the drawing]

The drawings show embodiments of the invention. Figures 1 and 2 are a partially concave side view and rear view showing the relationship between the handle and operating lever of the lawn mower according to the present invention, and Figures 3 and 4 are a side view and a plan view of the entire lawn mower. be. (Symbol) 8 Handle 8a Handle side grip part 9 Mower blade lever 9a Mower blade lever side grip part 10 Travel lever 10a Travel lever side grip part 12 Mower blade 17... Fulcrum shaft 18: Fulcrum shaft A: Rotation and trace of the cutting blade lever B: Rotation trajectory of the travel lever Patent applicant: Seirei Kogyo Co., Ltd. Patent attorney: Yoshi Sakano Figure 1 Figure 2 a

Claims (1)

[Claims] The side grip part (8a) of the handle (8) is rotated around the fulcrum shaft (17).
) side to start the cutting blade (12).
9), and the horizontal grip portion (8) of the handle (8) in the same direction as the cutting blade lever (9) around the fulcrum shaft (18).
Traveling lever (1) that rotates to the a) side to start the traveling device.
In a lawn mower, etc. equipped with
), (10) can be rotated independently of the other, so that both sides of the mower blade lever (9) and the travel lever (10) correspond to the side grip portions (8a) of the respective handles (8). Rotation trajectories (A) and (B) of grip parts (9a) and (10a)
), and the terminal portions of the rotation trajectories (A) and (B) that approach the handle (8) are made to overlap and coincide.