JP2000157029A - Grass mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grass mower capable of suppressing overload state of a motor and having good operability by providing a specific shaft part in a cap and providing a protective part attached to the shaft part on the cap. SOLUTION: This grass mower is equipped with a motor 1, an operating handle 1 building a switch 9 carrying out on-off of the motor 1 therein, a cord- housing part 3 housing a cord 8 made of a resin therein while leaving a part of the cord 8, rotating by receiving rotation force of the motor 1 and having an opening part in the lower face and a cap 4 attached to a cord housing part 3 so as to cover the housing part of the cord housing part 3. In the grass mower, a shaft part 6 protruded to the, lower direction is provided in the cap 4 and a protective part 5 attached through a bearing 7 to the shaft part 6 is provided on the cap. In this case, it is preferable that the lower part of the protecting part 5 is formed in semi-disk shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mower for cutting grass.

[0002]

2. Description of the Related Art An example of a conventional mower is shown in FIG. The mower shown in the figure transmits the rotational force of the motor 1 to the string storage unit 3, and a resin string 8 having one end exposed to the outside from the string storage unit 3.
Was rotated at a high speed, and the string 8 was used to cut grass and the like.

[0003] An opening is provided on the lower surface of the cord storage unit 3 so that the cord 8 can be loaded. A cap 4 having a shape covering the opening is attached to the lower part of the cord storage unit 3. Had been.

[0004]

The mowing machine having the above-described structure can cut the grass or the like while securing an appropriate gap between the cap 4 attached to the string storing section 3 and the ground 10. However, there is a disadvantage that the work must be performed while always maintaining an appropriate gap between the cap 4 and the ground 10 while holding the trimming machine main body, resulting in poor operability.

If the cutting operation is performed while the lower surface of the cap 4 is in contact with the ground 10, a load is applied to the motor 2, resulting in an overload state, and the motor 2 may be burned. .

An object of the present invention is to solve the above-mentioned drawbacks and to provide a mower having good operability and capable of suppressing the motor from being overloaded.

[0007]

The above object is achieved by providing a cap with a shaft protruding downward and a protective portion attached to the shaft via a bearing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a mower according to the present invention is shown in FIG.
This will be described below with reference to FIG.

[0009] Parts having the same configuration as those of the conventional mower are denoted by the same reference numerals, and description thereof is omitted.

As shown in the figure, a cap 4 is provided below the cord storage unit 3, and a protection unit 5 is provided below the cap 4. The protection portion 5 is connected to a shaft portion 6 projecting from the center of the lower surface of the cap 4 via a bearing 7 and is rotatable.

For this reason, since the protection unit 5 does not rotate in response to the rotation of the motor 2 and the rotation of the protection unit 5 is not transmitted to the motor 2, the protection unit 5 is kept on the ground 10 during the cutting operation. Even if they are brought into contact, no load is applied to the motor 2 and the motor 2 does not become overloaded.

Therefore, the cutting operation can be performed in a state where the protection portion 5 is in contact with the ground 10, so that the operability is improved.

The lower portion of the protection portion 5 is formed in a semicircular shape as shown in FIG. 3, so that the protection portion 5 can be tilted even when the body of the reaper is inclined to cut from the root of the grass as shown in FIG. The work can be performed in a state where the device is in contact with the ground 10, and the operability can be improved.

[0014]

According to the present invention, since the cap is provided with the shaft protruding downward and the protection portion attached to the shaft via the bearing is provided, the motor is prevented from being overloaded. And a mower with good operability can be provided.

[Brief description of the drawings]

FIG. 1 is an enlarged partial cross-sectional view showing a main part of an embodiment of a mower according to the present invention.

FIG. 2 is an enlarged partial cross-sectional view of a principal part showing one working state of the mower of FIG. 1;

FIG. 3 is an enlarged partial cross-sectional view of a main part showing one working state of the mower of FIG. 1;

FIG. 4 is an enlarged partial cross-sectional view showing an example of a conventional mower.

[Explanation of symbols]

1 is a motor, 2 is an amateur shaft, 3 is a string storage unit,
4 is a cap, 5 is a protection part, 6 is a shaft part, 7 is a bearing, 8 is a string, 9 is a switch, 10 is the ground, and 11 is a contact surface.

Claims (2)

[Claims] 1. A motor, an operation handle including a switch for turning on and off the motor, and a string having an open portion on a lower surface which stores a resin-made string except for a part thereof and rotates by receiving the rotational force of the motor. A mowing machine comprising a storage part and a cap attached to the string storage part so as to cover an opening part of the string storage part, wherein the cap has a shaft part protruding downward and is attached to the shaft part via a bearing. A mower equipped with a protection part. 2. A mowing machine according to claim 1, wherein a lower portion of said protection portion is formed in a semicircular shape.