JP2011015671A - Fixed blade for weeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weeder which has a low cost and simple mechanism and can cut string-like articles such as vines apt to be twined around an operating rod, and thereby prevents the twining of the string-like articles.SOLUTION: The weeder includes a fixed blade 13 for preventing twining. The blade is fixed on an operating rod 11 so as not to move at least during rotation of a rotating cutter blade 12 and during operation of weeding work, and cuts the string-like articles twined on the operating rod 11 during operation of the weeding work.

Description

  The present invention relates to a structure in which a fixed cutting blade capable of preventing tangling of string-like objects such as vines on an operating rod (including a gear case) of a mower is provided on the operating rod.

  At the time of mowing, standing grass has an angle with the rotary cutting blade of the mower and can be cut, but string-like objects such as vine grass grow so as to crawl the ground, and there is no cutting angle with the rotary cutting blade Since it becomes a state, cutting with a rotary blade becomes difficult, and string-like objects such as grass hanging on the operation rod of the mower get tangled. In addition, if cutting is forcibly, many string-like objects such as grass hang around the rotary shaft of the rotary cutting blade, or the rotary cutting blade comes into contact with the ground, pebbles are scattered, the cutting blade of the rotary cutting blade, etc. Unintended operation of the machine will be caused and work efficiency will be reduced.

  2. Description of the Related Art Conventionally, a technique for preventing winding of a string-like object such as grass on a rotating shaft of a rotary cutting blade has been proposed.

  JP 2007-60958 A   Japanese Utility Model Publication No. 5-29331

  The above conventional technique is a wrapping prevention blade that cuts a string-like object wound around the rotary shaft of the rotary cutting blade. There are a fixed type and a rotary type, and it is difficult to cut the entanglement of the string-like object of the operation rod with this technique. There's a problem.

  The present invention has been made in order to solve this problem, and can cut the string of the operating rod, thereby preventing the string from being tangled, and cutting and pushing away the rotation of the rotary cutting blade. An object of the present invention is to provide a fixed cutting blade for a mower capable of reducing winding of a string-like object on a shaft.

  In order to achieve the above object, the mower of the present invention is provided with a fixed cutting blade that is fixed to the upper portion of the rotary cutting blade of the operating rod and that cuts the string-like material that is tangled by the operation of the mowing operation.

  Because the fixed cutting blade that cuts the string-like material entangled with the operation rod of the mower is provided, it is possible to prevent the string-like material from being entangled and to reduce the winding of the string-like material wound around the rotary shaft of the rotary cutting blade. can do.

  The cutting means of this mower is not particularly limited as long as it can cut grass and the like. For example, a cutting blade provided with an outer peripheral blade on the outer periphery of the disk may be used, and several blades may be a rotating shaft. A cutting blade provided so as to face each other may be used, or a resin string may be used.

  Further, the fixed cutting blade fixing tool for preventing entanglement may be fixed with a fixed cutting blade mounting tool so that the blade line of the fixed cutting blade for preventing entanglement is inclined with respect to the operating rod, and the shape of the fixed cutting blade for preventing entanglement is curved. Alternatively, it may be formed in a fan shape, a sickle shape or the like and fixed to the operation rod.

  As a result, when the string-like object is entangled with the operation rod, the string-like object rises along the blade line in accordance with the operation of the mowing operation, and can be easily cut.

  Further, by attaching a protective cover that covers the fixed cutting blade for preventing entanglement, safety can be achieved when the mowing operation is stopped, when the rotary cutting blade is replaced, when it is moved and stored.

  Furthermore, a knife such as a sickle can be used as a fixed cutting blade for preventing entanglement, and an attachment can be provided on the operation rod.

  As described above, according to the mower of the present invention, since the fixed cutting blade for preventing entanglement is provided to cut the string-like object entangled with the operation rod of the mower, the string-like shape is provided with a low-cost and simple mechanism. The tangling of the object can be prevented, and the string-like object wound around the rotating shaft of the rotary cutting blade is first pushed away by the fixed cutting blade, so that it has an excellent effect of reducing the winding.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.

  1 is a plan view of a mower 10 according to the present embodiment, FIG. 2 is a side view of the mower 10, FIGS. 3 and 4 are plan views of the mower 10, and FIG. 5 is a front view of the mower 10. 6 is a side view of the mower 10, and FIGS. 7 and 8 are plan views of the mower 10.

  This mower 10 is provided with a plurality of outer peripheral blades on the outer periphery of the rotating disk by the power transmitted from a power generating unit (not shown) to the rotary cutting blade 12 from the operation rod 11 as a power transmission mechanism. A rotary cutting blade 12 is provided. The outer peripheral blade is not shown.

  Fixed to the operation rod 11 is a fixed cutting blade 13 for preventing entanglement that cuts a string-like object entangled with the operation rod 11 during mowing. As shown in FIGS. 1 and 2, a position where the fixed cutting blade 13 that cuts the string-like object entangled with the operating rod 11 does not come into contact with the rotary cutting blade 12, and a position that is suitable for cutting the string-like object entangled It is fixed by a fixed cutting blade fixture 14.

  The cutting blade side of the fixed cutting blade 13 is shown by a blade line in FIGS. 1 and 3 to 5. The fixed cutting blade 13 is a single fixed cutting blade fixture 14 in FIG. 3 (A) and FIG. 3 (B) has two heights so that the blade line is inclined with respect to the operation rod 11. The blade angle and the position are adjusted by different fixed cutting blade fixtures 14 and fixed to the operating rod 11. 4A, 4 </ b> B, and 4 </ b> C, the position of the blade was changed by the fixed cutting blade support 14 while changing the shape of the blade so that the blade line was inclined with respect to the operation rod 11. It is being fixed to the operating rod 11 in the state. 5 and 6 are adjusted in position and fixed at an angle at which the fixed cutting blade 13 is twisted with respect to the operating rod 11 (the mounting state of the fixed cutting blade 13 in FIG. 6 from the fixed cutting blade 13 in FIG. 2). Yes. In this way, when the blade line is inclined with respect to the operation rod 11, when the string-like object is entangled with the operation rod 11, the string-like object is cut along with the operation B paid by the mowing work. Thus, the amount of rubbing against the fixed cutting blade 13 for preventing the string-like object from becoming tangled is increased, and the string-like object can be easily cut. Moreover, with respect to the string-like object, the rotary cutting blade 12 is cut in the horizontal direction, and the fixed cutting blade 13 is cut in the vertical direction.

  In FIG. 7, a protective cover 15 that covers the fixed cutting blade 13 is attached to the fixed cutting blade 13 along the operation rod 11 in a sliding manner. In this way, by attaching the protective cover 15, it is possible to prevent harm to the body such as when the cutting blade of the rotary cutting blade 12 is replaced, when the mowing operation is stopped, or when it is transported and stored. In FIG. 8, the mowing sickle 23 is fixed to the operation rod 11 by the mowing sickle mounting tool 24. Thus, the fixed cutting blade 13 attached to the operation rod 11 can fulfill the role of a large mowing sickle since the operation rod 11 serves as a sickle handle.

  1-7, the fixed cutting blade 13 side is provided with a hole that can be screwed to the fixed cutting blade 13 side, and the operation rod 11 side is screwed on both sides so that the operation rod 11 is sandwiched between them. Are fixed.

  Next, the operation of the mower 10 and the operator will be described.

  An operator generates power with a power generation unit (not shown) while the mower 10 is supported. The power generated by the power generation unit is transmitted to the rotary cutting blade 12 by the operation rod 11. With this power, the rotary blade 12 rotates in the rotational blade rotation direction A shown in FIG. 1, and the operator moves the rotary blade 12 and the operating rod 11 in the direction of the payment operation B shown in FIG. It is possible to mow the grass and the like by continuing.

  As described above, since the fixed cutting blade 13 that cuts the string-like object entangled with the operation rod 11 is fixed to the operation rod 11, the string-like object tangled with the operation rod 11 can be easily cut.

  In the above embodiment, the fixed cutting blade 13 is fixed in the direction of the paying operation B in FIG. 1, but the fixing position is not particularly limited as long as the string-like object to be tangled can be cut. You may make it fix the rod 11 to the direction required for an axis | shaft.

  In the above embodiment, the protective cover 15 of FIG. 7 is slid along the fixed cutting blade 13 and fixed to the operating rod 11. However, the protective cover 15 may be detachable. The attachment 16 may also be used as the fixed blade attachment 14.

  Moreover, in the said embodiment, although the fixed cutting blade attachment tool 14 provided one attachment hole, it is not restricted to this, For example, several holes which can be screwed to the fixed cutting blade attachment tool 13 and the fixed cutting blade 13 are provided. Alternatively, an elongated attachment hole may be provided, and the angle may be adjusted and fixed so as to be inclined with a screw or the like. Further, the operation rod 11 side may be configured such that the fixture is tightened when the lever is operated so as to sandwich the operation rod 11.

  Furthermore, in the above embodiment, the fixed cutting blade 13 is fixed by screwing. However, the present invention is not limited to this. For example, the fixed cutting blade 13 is provided with a groove along one or both of the blade lines. You may fix so that the fixed cutting blade 13 side of the blade fixture 14 may be pinched | interposed by putting a nail into a groove | channel with the fixture comprised with the nail | claw.

  Moreover, in the said embodiment, as shown in FIG.3 and FIG.4 (B) (C), although demonstrated with the fixture with a clearance gap between the operating rod 11 and the fixed cutting blade 13, it is not limited to this. As shown in FIG. 4A, the fixed cutting blade 13 may be formed so that the clearance between the operating rod 11 and the fixed cutting blade 13 is eliminated and the fixed cutting blade 13 and the fixed cutting blade mounting tool 14 are integrated. It may be formed. As a result, it is possible to prevent the grass and string-like objects from entering the gap between the operation rod 11 and the fixed cutting blade 13.

  In the above embodiment, the mowing machine using the rotary blade 12 as a cutting means has been described as an example. However, the present invention is not limited to this. For example, two blades face each other with respect to the rotation axis. The mowing blade provided may be a mower or a mower using a resin string or the like.

It is a top view of the mower which concerns on embodiment of this invention. 1 is a side view of a mower according to an embodiment of the present invention. It is a top view of the mower which concerns on embodiment of this invention. It is a top view of the mower which concerns on embodiment of this invention. It is a front view of the mower which concerns on embodiment of this invention. 1 is a side view of a mower according to an embodiment of the present invention. It is a top view of the mower which concerns on embodiment of this invention. It is a top view of the mower which concerns on embodiment of this invention.

DESCRIPTION OF SYMBOLS 10 Mower 11 Operating rod 12 Rotating cutting blade 13 Fixed cutting blade 14 Fixed cutting blade mounting tool 15 Protective cover 16 Cover mounting tool 23 Sickle 24 Sickle pattern mounting tool A Rotating cutting blade rotation direction B Payment operation

Claims (5)

  It is fixed to the operating rod, and is fixed to the operating rod so that it does not move at least during rotation of the rotary blade and during mowing work. A mower provided with a fixed cutting blade.   The mowing machine according to claim 1, wherein the fixed cutting blade for preventing entanglement, the angle of which is adjusted so that the blade line of the fixed cutting blade for preventing entanglement is inclined with respect to the operating rod, is fixed to the operating rod.   The mowing machine according to claim 1, wherein the fixed cutting blade is formed so that a blade line of the fixed cutting blade for preventing entanglement is inclined with respect to the operation rod, and is fixed to the operation rod.   A mowing machine in which a cutter is formed on the fixed cutting blade for preventing entanglement and fixed to an operating rod.   The mower according to claim 1, 2, 3, or 4, wherein a protective cover that covers the fixed cutting blade for preventing the entanglement is formed.

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