JPS6112182Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a brush cutter for mowing grass and the like using a cutting cord pulled out from a main body case which rotates when driven by an engine.

Conventionally, in this type of brush cutter, a cutting cord holder with a plurality of cutting cords wound around it is fitted inside the main body case. The end of the cutting cord wound around the string holder is passed through and pulled out of the main case, and then the cutting string holder is fitted inside the main case, but since the cutting string is rigid,
If the grip on the cutting cord becomes loose, it may unwind, and it is difficult to insert the cutting cord holder into the main body case while holding the cutting cord around the flange provided on the cutting cord holder. .

In this invention, a cutting cord holder is provided inside the main body case so that it can be fitted freely, and a cutting cord is provided by winding it between an upper collar part and a lower collar part arranged in parallel with this cutting cord holder. By providing a through hole for passing the cutting cord through the outer circumference of the case, and providing a notched groove for holding the cutting cord at a position corresponding to the through hole in the upper flange of the cutting cord holder,
When assembling the cutting cord holder to the main body case, the cutting cord will not be rewound inside the main body case.
It is an object of the present invention to provide a brush cutter that can be easily assembled. Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

In the figure, 1 shows one embodiment of the present invention, and 3 is an outer pipe connecting the engine 5 and the support 7, and inside the outer pipe, the driving force of the engine 5 is transmitted to the inside of the support 7. A transmission shaft (not shown) is provided. A handle 9 for supporting the aircraft body is fixed to the outer pipe 3.
A first grip portion 11 is provided at the tip. Further, a second grip portion 13 is fixed to the engine 5 side of the outer pipe 3. The support body 7 is constructed as follows. That is, reference numeral 15 denotes a rotating shaft that is rotated by the driving force of the engine 5 via a transmission mechanism such as a transmission shaft (not shown) in the outer pipe 3 and a bevel gear (not shown), and is rotatably mounted on the support body 7. Supported. Reference numeral 17 denotes a cylindrical main body case made of synthetic resin, and a threaded portion 21 of the rotating shaft 15 is screwed into and fixed to a nut 19 fixed at the center. A cutting cord 2 is attached to the outer wall of the main body case 17.
Through holes 23, 2 for passing through 2, 22, ...
3,... are provided. Through holes 23, 23,
... are fitted with caps 25, 25, ..., respectively. 27 is a cutting cord holder, which is constructed as follows. That is, numerals 29 and 31 are an upper collar portion and a lower collar portion that are arranged vertically in parallel on the upper portion of the body portion 33 of the cutting cord holder 27, respectively.
The cutting cord 22 is wound between an upper flange 29 and a lower flange 31, respectively. A bullet 35 is loaded inside the body 33 and is biased to press the cutting cord holder 27 downward. 37,3
7, ... is the mowing cord holder 27 attached to the main body case 17.
These are locking pawls provided on the upper surface of the upper flange 29 and the lower surface of the lower flange 31, respectively, to engage with the latching portions 38, 38, . . . Reference numeral 39 denotes notch grooves provided on the outer peripheral edge of the upper collar portion 29 for holding the cutting cord, and the same number of grooves are provided at positions corresponding to the through holes 23. Reference numeral 41 denotes a cover that holds the cutting cord holder 27 fitted to the main body case 17 from below, and is locked to the main body case 17.

In the above embodiment, when driving the brush cutter 1, after driving the engine 5, the first
The user grasps the grip portion 11 and the second grip portion 13 with both hands, and uses a cutting cord pulled out to the outside of the rotating main body case 17 to cut grass or the like.

When assembling the cutting cord holder 27 to the main body case 17, as shown in FIG. Then, the tip portion thereof is further passed through the through hole 23 and pulled out to the outside to an appropriate length. The above-mentioned operations are performed on each cutting cord 22. Next, as shown in FIG. 7, when the cutting cord holder 27 is fitted into the main body case 17, the cutting cord 22 is accommodated in a bent state in the space between the cutting cord holder 27 and the main body case 17. If you grasp the tip of the cutting cord 22 outside the through hole 23 and pull it strongly, the cutting cord 22 will separate from the notched groove 41, and the end will directly pass through the through hole 23 and be pulled out. becomes. Next, the cover 39 is locked to the main body case 17 from below the cutting cord holder 27.

Since the present invention has the configuration as described in the claims, the cutting cord holder can be easily assembled to the main body case, and the working ability can be improved.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the present invention, Fig. 2 is an explanatory side sectional view of the main part in the - line direction in Fig. 3, Fig. 3 is a plan explanatory view of the main part, and Fig. 4 is the 3, FIG. 5 is a side cross-sectional view of FIG. 3, and FIGS. 6 and 7 are side cross-sectional views of main parts showing a state in the middle of assembly. Explanation of symbols representing main parts of the drawings, 17...
...Main body case, 22...Cut cord, 23...Through hole, 27...Cut cord holder, 29...Upper flange, 31...Lower flange, 41...Notch groove.

Claims (1)

[Scope of utility model registration request] A cutting cord holder 27 is installed inside the main body case 17.
An upper collar part 29 and a lower collar part 31 are provided in such a way that they can be freely fitted together, and are arranged in parallel on the cutting cord holder 27.
A cutting cord 22 is wound around and provided between the main body case 17 and a through hole 23 for passing the cutting cord 22 through the upper flange portion 29.
A brush cutter characterized in that a cutout groove 41 for holding the cutting cord 22 is provided at a position corresponding to the through hole 23.