JPH0636689B2 - lawn mower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is configured such that cutting grass is supplied to a grass collection container by blowing air from a drive rotary cutting blade, and the amount of collection by the grass collection container is displayed. The present invention relates to a lawnmower provided with a device for detecting a collection amount based on the wind force of a supply path to the grass container.

[Conventional technology]

In the lawnmower, the eleventh display device is conventionally used as the display device.
There was something shown in the figure. That is, a display device that also serves as a detection device
A duct member (4) for urging the supply passage (8) so that (23) can be moved up and down by swinging around an axis (P ₅ ), and is lowered by its own weight. It is the one that was pivotally attached to. Therefore, when the grass collection container (7) is empty, the wind that enters with the cut grass easily escapes from the air vent holes such as the texture of the container (7), and the wind force of the supply path (8) becomes large. , The wind force pushes the indicator (23) to the empty display position (A) protruding outside the supply path (8), so that the display part (23a) of the free end of the indicator (23) can be seen. Become. On the other hand, when the grass container (7) is full, the wind vent holes of the grass container (7) are clogged and it becomes difficult for the wind to escape, so the wind force on the supply path (8) becomes small and the indicator ( 23) Allows the weight to drop, so
The display tool (23) is located at the full display position (B) where it enters the inside of the supply path (8) so that the display section (23a) cannot be seen. The conventional structure has the following disadvantages.

[Problems to be solved by the invention]

That is, in the above-mentioned conventional structure, it is possible to determine only whether the wind force in the supply path is equal to or less than the value corresponding to full, or the case where the wind force is greater than the full amount, There is no indication that the grass collection bag is halfway between empty and full, and the grass collection container is full,
After that, it is not possible to judge the extent to which the lawn can be mowed until it becomes full, and it is necessary to remove the grass container in order to make a judgment by looking inside the grass container. Was there.

An object of the present invention is to allow the amount of collection to be detected based on the wind force, but in a state where the operator can easily see it,
The purpose is to display the amount of intermediate recovery between empty and full.

[Means for solving problems]

In order to achieve the above object, a lawn mower according to the present invention is configured such that cutting grass is supplied to a grass collection container by blowing air from a drive rotary cutting blade, and a display device for displaying the amount collected by the grass collection container. Is a lawn mower provided in a state of detecting the amount of collection based on the wind force of the supply path to the grass container, the display section of the display device is configured to project outward, the supply path A rotating body that is rotated by receiving the wind force of, the display unit is set to an empty display position when the rotating body receives a wind force of a predetermined amount or more, and the rotating body is set lower than the predetermined wind force. When it receives a wind power less than the specified wind power, it will be in the full display position, and further,
The display unit is interlocked with the rotating body so that the rotating body is positioned between the empty display position and the full display position when the rotating body receives the wind force between the both setting ranges. And

The operation and effect of this characteristic configuration are as follows.

[Action]

That is, the wind force in the supply path is taken out as the movement of the rotating body which is rotated by receiving the wind force, and the display unit is configured to be displaced to a position according to the movement of the rotating body. Since the part is provided so as to project outward, the operator simply looks at the display part,
While being able to determine the amount of cut grass collected in the grass container, the operator can also check the intermediate state of the amount collected by visually checking the display unit at the intermediate position between the empty display position and the full display position. I can know.

〔The invention's effect〕

Therefore, since the display device protruding to the outside can be seen from a relatively long distance, it does not require the operator to go near the display device to check the display state, and the collected amount state between empty and full. Is also displayed, and it is possible to easily and quickly determine the range of mowing work that can be done before the work is full, without removing the grass collection container. The work efficiency can be improved because the work can be done rationally so that the work can be minimized.

〔Example〕

As shown in FIG. 9 and FIG. 10, a pair of left and right front wheels
(1), (1) and rear wheels (2), (2), and the cutting blade (3) is rotatably mounted around the longitudinal axis (P ₁ ) An engine (5) for driving the cutting blade (3) is attached to the upper surface of the blade housing (4), and the housing (4)
A steering handle (6) is attached to the rear of the cutting blade, and the grass collection bag (7) is cut, and the grass scraps are blown by the rotation of the cutting blade (3) through the supply path (8) of the cutting blade housing (4). It is installed so that it can be supplied as a walk-behind lawnmower.

As shown in FIG. 6 and FIG. 7, the cutting blade attachment part (10) of the cutting blade drive shaft (9) is inserted into the cutting blade (3) from the opening (11) in the width direction and is attached or removed. Engage in a U-shape so that the cutting blade (3) can be removed, and engage the upper ridge (3a) of the cutting blade (3) so that the cutting blade (3) does not shift in position in the longitudinal direction with respect to the cutting blade mounting portion (10). The cutting groove (10a) or (10b) to be inserted is arranged in such a manner that the protrusions (3a) and (3b) are engaged and disengaged by inserting and removing the cutting blade (3), and the cutting blade mounting portion ( It is provided in 10). Then, the metal fitting (12) for stopping the cutting blade (3) from being pulled out from the cutting blade mounting portion (10) is provided with the free end engaging the concave portion (1).
(0c) is press-fitted into the lowering action position, and the raising release position located above the opening (11) is pivotally attached to the cutting blade mounting part (10) so that the swinging can be switched. The attachment / detachment for the replacement of 3) and the like can be easily and quickly performed only by swinging the stopper (12) and inserting / removing the cutting blade (3).

As shown in FIG. 8, the grass collecting bag (7) is provided with a partition plate (13) for partitioning the inner space into two stages, and the grass for one bag inner part (7a). The loading / unloading opening (14a) and the grass loading / unloading opening (14b) for the other bag inner portion (7b) are provided in a state of being arranged on the front and rear sides of the bag (7), and one bag inner portion (7a) or ( 7b)
When the bag is full, the rotating operation around the horizontal axis (p ₂ ) at the connecting portion of the bag (7) with the bag support (15) causes the other inner part of the bag (7b) which is still empty or (7a) side grass inlet / outlet (14a) or (14b) is connected to the grass outlet of the supply path (8) to switch the connection, so that the inside of the bag (7b) or (7a) can be used to collect grass. is there. In other words, the partition plate (13) is used to suppress the sagging of the bag body due to the weight of the collected turf.

A display device (16) for the amount collected by the grass collection bag (7) is provided at the rear end of the cutting blade housing (4).
6) is constructed as shown in FIGS.

That is, the supply passage (8) is arranged so that the rotating body (17) is rotated around the axis (P ₃ ) by the wind from the cutting blade (3) of the supply passage (8).
The cutting blade housing via the rotary support shaft (18)
Attached to (4), the detector is configured to detect the amount of recovery based on the wind force of the supply path (18). Then, a plurality of strip-plate strip indicators (19) distributed in the circumferential direction of the protruding portion of the support shaft (18) outward from the cutting blade housing (4) are each independently provided with an axial core ( Undulating around P ₄ ), and
The rotation support shaft (18) is pivotally attached to the rotation support shaft (18) while being rotated upright by the spring (20) so that it can rotate integrally with the rotation support shaft (18), and the display plate (21) is attached. The display tool (1
9) ... Fixed to the cutting blade housing (4) while being arranged concentrically with the rotary support shaft (18) below each of them, and the display tool of the display plate (21).
The display section (21a) of a color different from that of (19) and the display unit are configured to display by the display tool (19).

That is, when the wind that enters with the turf easily escapes from the texture of the bag (7) as the air vent hole, and the wind force of the supply path (8) is strong and the rotating body (17) becomes the first set rotational speed or more, the display device Each of (19) ... is made to lie substantially horizontally against the spring (20) due to the centrifugal force due to the rotation, so that the empty display position (B) is displayed. As shown in FIG. Face (21a)
When most of the center side of is hidden by the display device (19), that is,
When only a very small portion on the outer peripheral side of the display surface (21a) is visible, it is determined that the inner portion (7a) or (7b) of the grass collection bag (7) is empty.

When the weave of the bag (7) is clogged with the collected turf and the wind is hard to escape from the bag (7) and the wind force in the supply path (8) becomes weak, the indicators (19) ... Therefore, the full display position (A) is erected almost vertically, and as shown in FIG. 5, when almost the entire display surface (21a) can be seen, the inner part of the grass collection bag (7) ( It is determined that 7a) or (7b) is full.

When the wind force of the supply path (8) falls between the above two values and the rotating body (17) reaches a rotation speed between the first set rotation speed and the second set rotation speed, the display device (19 ) ... are positioned between the empty display position (B) and the full display position (A) (C) due to the strength relationship between the centrifugal force due to the rotation and the biasing force of the spring (20). , As shown in FIG. 4, the display surface (2
If the outer peripheral part of 1a) is visible in the space between the empty time and the full time, it can be said that the inner part (7a) or (7b) of the grass bag (7) is in a state between the empty and full. I am trying to judge.

Incidentally, (22) shown in FIG. 1 is a transparent cover for the display tool (19) and the display plate (21).

[Another embodiment]

The grass collection bag (7) can be made of resin or the like in addition to cloth, and these are collectively referred to as a grass collection container (7).

The display section of the display device (16) can be changed to various types including a pointer and a scale.

[Brief description of drawings]

The drawings show an embodiment of the lawnmower according to the present invention, in which FIG. 1 is a side view with a part of the display device cut away, FIG. 2 is a plan view with a part of the display device cut out, and FIGS. Is a plan view of the display device, FIG. 6 is a perspective view of the cutting blade mounting portion, FIG. 7 is a partially cutaway side view of the cutting blade mounting portion, FIG. 8 is a perspective view of the grass collecting bag, and FIG. FIG. 10 is a side view of the entire walk-behind lawnmower, and FIG. 10 is a partially cutaway plan view of the walk-behind lawnmower. FIG. 11 is a partially cutaway side view of a conventional display device. (3) …… Cutting blade, (7) …… Grass collection container, (8) …… Supply path, (16)
...... Display device, (17) …… Rotating body, (19) …… Display device, (A)
…… Full display position, (B) …… empty display position, (C) …… intermediate position.

Claims (1)

[Claims] 1. A structure in which cutting grass is supplied to a grass container (7) by blowing air from a driving rotary cutting blade (3),
A lawn mower provided with a display device (16) for the collection amount by the grass collection container (7) in a state of detecting the collection amount based on the wind force of the supply path (8) to the grass collection container (7). , The display device
The display part of (16) is configured to project outward, and the rotating body (1) is rotated by receiving the wind force of the supply path (8).
7) is provided, the display unit is in the empty display position (B) when the rotating body (17) receives more than a predetermined wind force, and the rotating body (17) is set lower than the predetermined wind force. When it receives a wind power less than the specified wind power, it becomes full display position (A),
Furthermore, when the rotating body (17) is in a state of receiving a wind force between the both set ranges, an empty display position (B) and a full display position (A)
Between the display and the rotating body so that it is located between (C)
A lawn mower linked to (17).