JP3222213U - Guard for mowing machine - Google Patents

Abstract

An object of the present invention is to protect a person or an object located in all directions from a scattered object when using a brush cutter by covering the entire circumference of a rotating cutting member, and is difficult to break and is excellent in a brush cutting operation. It is possible to provide a guard member for a bush cutter that can ensure the proper workability. A guard member includes a cover support member made of a circular frame that is fixed to a position above an attachment position of a cutting member of an operation shaft in parallel with a rotation surface of the cutting member. And a cover member 3 made of a synthetic resin sheet provided with a circular top portion 31 supported by the cover support member and a cylindrical peripheral portion 32 having a slit through which the operation shaft is inserted. [Selected figure] Figure 1

Description

  The present invention relates to a guard member that protects a person or the like from foreign matter that scatters when using a bush cutter.

BACKGROUND ART A mowing machine is conventionally known as an instrument for removing weeds that grow on banks and the like.
The bush cutter is configured to transmit rotational power generated by an engine or a motor to a cutting member such as a cutting blade (hereinafter simply referred to as "cutting member") attached to the tip of the operation shaft.
Then, the operator controls the rotation of the cutting member rotated by the engine or the motor by the throttle lever, and operates the operating shaft so as to swing around to perform a desired mowing operation.
When performing a mowing operation with such a mowing machine, foreign matter (such as pebbles in weeds; referred to as "foreign matter" in the present specification) is scattered by the cutting member in an unintended direction by the scattered foreign matter. There was a problem that a person was injured or surrounding objects were damaged.

  In order to cope with this problem, a guard member has been proposed and put into practical use, which protects an operator from an object that scatters when using a bush cutter (see, for example, Patent Document 1).

Utility model registration No. 3144741

By the way, the conventional guard member for the bush cutter does not cover the entire circumference of the rotating cutting member in consideration of workability in the mowing work, and for example, covers only the direction in which the operator is positioned. Foreign matter scattered in an unintended direction may cause problems such as injury to surrounding people or damage to surrounding objects.
In addition, since the conventional guard member for the bush cutter is made of a material having high rigidity, the guard member itself is easily damaged by the scattered foreign matter, the problem of poor durability, large weight, and the work at the time of mowing work There was a problem that sex was bad.

  In view of the problems with the above conventional guard member for a bush cutter, the present invention covers the entire circumference of the rotating cutting member, thereby enabling people and objects positioned in all directions from the object to be scattered when using the bush cutter. It is an object of the present invention to provide a guard member for a bush cutter which is hard to be damaged and which can ensure good workability at the time of mowing work.

  In order to achieve the above object, a guard member for a bush cutter according to the present invention is a guard member used for a bush cutter having a cutting member attached to the tip of the operation shaft, wherein the mounting position of the cutting member for the steering shaft is A cover supporting member comprising a circular frame fixed in parallel with the rotational surface of the cutting member at an upper position, a circular top portion and a cylindrical peripheral portion supported by the cover supporting member And a cover member made of a synthetic resin sheet.

  In this case, the cover member may be formed in such a shape that the lower end edge of the cylindrical peripheral portion of the cover member is located above the rotation surface of the cutting member.

  According to the guard member for a bush cutter of the present invention, a cover supporting member comprising a circular frame fixed in parallel with the rotational surface of the cutting member at a position above the mounting position of the cutting member of the operation shaft A cover member formed of a synthetic resin sheet having a circular top portion and a cylindrical peripheral portion supported by the cover support member, the entire periphery of the cutting member rotated by the cover member The cover member made of a synthetic resin sheet is less likely to be damaged and has a circular shape with a small weight, while protecting persons and objects located in all directions from objects that are scattered when using a bush cutter by covering the Combined with the use of the cover support member made of a body, it is possible to ensure good workability in the mowing operation.

  Further, the cover member is wound on the cutting member by forming the cover member so that the lower end edge of the cylindrical peripheral portion of the cover member is positioned above the rotational surface of the cutting member. Can be prevented.

An example of the guard member for bush cutters of this invention is shown, (a) is a top view, (b) is a side view. It is a perspective view which shows the cover member of the guard member for the same bush cutter.

  Hereinafter, an embodiment of a guard member for a bush cutter of the present invention will be described based on the drawings.

1 and 2 show an embodiment of a guard member for a bush cutter according to the present invention.
The guard member for the bush cutter is located above the attachment position of the cutting member 5 of the operation shaft 4 in the guard member 1 used for the bush cutter in which the cutting member 5 is attached to the tip of the operation shaft 4. A cover supporting member 2 comprising a circular frame 21 fixed in parallel with the rotational surface of the cutting member 5, a circular top 31 and a cylindrical periphery supported by the cover supporting member 2 And a cover member 3 made of a synthetic resin sheet having a portion 32.

  In this case, as the cutting member 5, it is possible to use a cord called a general-purpose cutting blade made of a circular tip saw, a three-edged blade, or a nylon cutter.

The cover support member 2 is composed of a frame 21 in which a wire made of metal such as stainless steel having a diameter of 1 to 3 mm is formed in a circular shape, and via the support pieces 22 and 23 formed by using the same wire. The mounting tool 24 is used to fix the mounting shaft 24 at a position above the mounting position of the cutting member 5 in parallel with the rotation surface of the cutting member 5.
Here, the frame 21 and the support pieces 22 and 23 may be integrated by welding, or they may be disassembled or folded by using any fixing means or hinge means. it can.
In addition, the frame body 21 is integrated by welding the cross-shaped shape holding pieces 25.

The cover member 3 supported by the cover support member 2 has a circular top portion 31 and a synthetic resin sheet having a thickness of 0.2 to 1.0 mm (0.3 mm in this embodiment). It is made to consist of a cylindrical peripheral part 32.
When the cover member 3 is attached to and supported by the cover support member 2, the slit 32 a for inserting the operation shaft 4 is formed in the peripheral portion 32, and the portion in which the slit 32 a is formed is prevented from curling up. The slit 32a is closed by the double-sided fastener 32b.
Here, the cover member 3 is formed separately from the separately formed circular top portion 31 and cylindrical peripheral portion 32 by heat fusion or an adhesive tape, and is generally used. It is also possible to form the top 31 by bending the bottom of the bag using a bag made of synthetic resin.
Further, the synthetic resin sheet used for the cover member 3 is preferably transparent or translucent in that the visibility during the mowing operation can be secured, and a laminated sheet reinforced using fibers etc. as necessary. Can also be used.

The mounting position of the guard member 1 is such that the distance H5 between the rotation surface of the cutting member 5 and the top surface of the guard member 1 is 150 to 250 mm, preferably 180 to 220 mm (200 mm in this embodiment). Do.
Further, in order to prevent the circumferential portion 32 of the cover member 3 from being caught in the cutting member 5, the lower end edge of the circumferential portion 32 of the cover member 3 is specifically positioned above the rotation surface of the cutting member 5. The height H1 of the guard member 1 (peripheral part 32 of the cover member 3) is H5-1 to 30 mm, preferably H5-5 to 20 mm (in this embodiment, H5 (200 mm) -20 mm = 180 mm). .) To form.

  The diameter D1 of the guard member 1 is formed so as to be the rotational diameter D5 + 50 to 100 mm, preferably D5 + 60 to 80 mm (in this embodiment, D5 (370 mm) +70 mm = 440 mm) of the cutting member 5.

  The mower cutter guard member covers the entire circumference of the rotating cutting member 5 with the cover member 3 to protect a person or an object located in all directions from objects that are scattered when using the mower, while being composited. The cover member 3 made of a resin sheet is damaged because the peripheral portion 32 of the cover member 3 is not substantially restrained, so that it exerts a buffer action by being flexibly deformed even if a scattering object collides, so it is broken. In combination with the use of the cover supporting member 2 which is difficult to be carried out and which is made of the circular frame 21 having a small weight, it is possible to secure good workability in the mowing operation.

  As mentioned above, although the guard member for bush cutters of this invention was demonstrated based on the Example, this invention is not limited to the structure described in the said Example, The structure is suitably in the range which does not deviate from the meaning. Can be changed.

  The guard member for the bush cutter of the present invention is hard to be damaged while covering persons and objects located in all directions from objects that scatter when using the bush cutter by covering the entire circumference of the rotating cutting member, Because it has the property of being able to ensure good workability in the mowing operation, it is called a mowing machine or nylon cutter that uses a general-purpose cutting blade consisting of a tip saw or a three-edged blade as a cutting member It can be used suitably for the use of the bush cutter using a cord.

DESCRIPTION OF SYMBOLS 1 Guard member 2 Cover support member 21 Frame 3 Cover member 31 top part 32 circumference part 4 Operation shaft 5 Cutting member

Claims (2)

In a guard member used for a bush cutter having a cutting member attached to the tip of the operation shaft,
A cover supporting member comprising a circular frame fixed in parallel with the rotational surface of the cutting member at a position above the mounting position of the cutting member of the operation shaft;
What is claimed is: 1. A guard member for a bush cutter comprising: a cover member made of a synthetic resin sheet having a circular top portion and a cylindrical peripheral portion supported by the cover support member.   The guard member according to claim 1, wherein the cover member is formed in a shape in which a lower end edge of a cylindrical peripheral portion of the cover member is positioned above a rotation surface of the cutting member.

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