JPH052622U - Brush cutter - Google Patents

Abstract

(57) [Summary] [Purpose] An object of the present invention is to obtain a brush cutter capable of safely performing the brush cutting work and preventing damage to standing trees. [Structure] The above-mentioned mowing means in a handheld mowing machine of a type that transmits the driving force of an engine arranged at the rear part of the equipment main body to a mowing means at the front part of the main body through a sheath tube and grips a handle to perform mowing work. A guard member set to a shape slightly larger than the turning radius of the brush cutting means,
This guard member is characterized in that it can be flipped up to the brush cutting means.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  This device applies the driving force of the engine located at the rear of the main unit of the equipment to the front of the main body via the sheath tube. Hand holding the handle while gripping the handle and performing the mowing work It concerns the improvement of brush cutters.

[0002]

[Prior art]

  Conventionally, the driving force of the engine located at the rear of the main body of the equipment is transferred to the front of the main body via the sheath tube. It is transmitted to the bush cutting means made of steel blades and nylon cords, Rotate the mowing means at high speed and grasp the handle to mow the weeds. The brush cutters used are widely used because they can easily perform required work.

[0003]

[Problems to be solved by the device]

  By the way, such as steel blades and nylon cords in this type of brush cutter During the work, the mowing means may damage the trees in the mowing area or peel off the skin. Not only does it hit the wall or pebbles, but if the steel blade The parts may be chipped off and the operator may be in danger, or the nylon cord may not be sharp. Various improvements should be made in terms of safety, such as not only falling but also scattering pebbles, etc. The point was pointed out.

[0004]

[Means for Solving the Problems]

  Therefore, in this invention, the driving force of the engine arranged at the rear of the device main body is passed through the sheath tube. To the mowing means at the front of the main body and grip the handle to perform mowing work. Above the mowing means in a hand-held bush cutter, the radius of gyration of the mowing means Also has a guard member set to a slightly larger shape, and this guard member The structure is designed so that it can be flipped up to the steps to improve work safety. To do.

[0005]   In this case, the guard member is formed of a circular frame member, and a part of this circular frame member is used as a sheath tube. It is pivotally attached and an operation lever is provided near the handle, and the operation lever operates the link. If it is configured so that the circular frame-shaped guard member can be flipped up through the hook member, It is suitable because it can be done efficiently even in places where guard members are unnecessary. It

[Work]

[0006]   In the brush cutter according to the present invention, the guard member arranged above the brush cutter rotates at high speed. It functions as a radial spacer for the mowing means to protect the mowing work safely. It can be done easily and easily.

【Example】

[0007]   A preferred embodiment of the brush cutter according to the present invention will be described below with reference to the accompanying drawings. The details will be described.

[0008]   1 and 2, the brush cutter according to the present invention is provided at the rear end of the device body 10. The rotational driving force of the engine 12 is transferred from the steel blade through the inside of the sheath tube 14. To the cutting blade 16 (cushioning means) to grip the handle 18 and mow weeds. It is configured to do a lot of work.

[0009]   In the vicinity of the tip of the sheath tube 14 and above the cutting blade 16, the cutting blade 16 The guard 22 consisting of the circular frame member 20 set to a diameter slightly larger than the diameter of The guard 22 is pivotally attached via the attachment member 24 and the guard 22 is splashed onto the cutting blade 16. It can be raised freely.

[0010]   In addition, in the diametrical direction of the circular frame member 20, the deformation and reinforcement of the frame member 20 are prevented. It is preferable to arrange the transfer member 26 that also serves as the above.

[0011]   Further, as a means for constructing the guard 22 so that it can be flipped up freely, a pair of mounting members 24 can be used. The eccentric cam 28 is fixed to both end pivot parts 20a of the circular frame member 20 that The eccentric cam 28 is elastically pressed and held by a leaf spring 30 fixed to the mounting member 24. If necessary, the guard 22 can be rotated about both ends pivotally attached portions 20a as fulcrums. And so that it can be held at a desired position (see FIG. 3).

[0012]   In the attached drawings, reference numeral 32 is a throttle operation lever of the engine 12. The rotation control of the cutting blade 16 is performed at the time of mowing work. Reference numeral 34 is a side guard member of the brush cutter 16.

[0013]   On the other hand, in the embodiment shown in FIG. 4, the mounting position of the handle 18 arranged on the sheath tube 14 The lever member 36 is tiltably provided closer to the bush cutting blade 16 than the So that the operation of flipping up the guard 22 can be performed via the rod member 38 connected to In this embodiment, the lever member 36 is provided with, for example, a locking mechanism ( (Not shown) is arranged so that the guard 22 can be held at a desired position. preferable.   In addition, in this case, both end portions 20a of the circular frame member 20 forming the guard 22 are It may be pivotally attached to the attachment portion of the partial guard member 34.

[0014]   Further, in the illustrated embodiment, the circular frame member 20 is used as the guard 22. However, the shape is such that the outer peripheral edge is located outside the diameter of the cutting blade 16. Needless to say, it can be set to an appropriate shape such as an arc shape.

[0015]   When using the brush cutter according to the present invention configured as described above, it is preferable that Before starting the engine 12 or before working on the wall or near a standing tree, install the guard 22. Positioned above the brush blade 16 by rotating the two ends 20a as fulcrums. Then, by gripping the handle 18 and operating the throttle lever 32, Is used to mow work such as weeds, but it is located above the mowing blade 16. In addition, the guard 22 set to a diameter slightly larger than that diameter is Acting as a pacer, the mowing blade 16 may damage trees in the mowing area, It is possible to avoid the inconvenience caused by hitting or pebbles.

[0016]   In the embodiment shown in FIG. 4, the rod member 38 is operated by operating the lever member 36. It goes without saying that the guard 22 may be operated via the.   Also, when work near trees or walls is completed, or in a wide reaping area, As shown by the broken lines in FIG. 1 and FIG. It is sufficient to perform the same work as the machine.

[0017]

[Effect of device]

  As described above, according to the brush cutter of the present invention, it is arranged above the brush cutting means. The guard acts as a spacer between the tree and the wall, so it can be used during mowing work. Not only can you prevent damage to non-shredded objects, but also damage Bounce can be reliably prevented, and therefore not only can safety be improved. It has various advantages such as improvement of work efficiency, and its practical effect is extremely large.

[0018]   As described above, as a preferred embodiment of the brush cutter according to the present invention, a steel blade is a brush cutting means. However, the present invention is limited to this embodiment. However, when using a nylon cord as a brush cutter, the nylon cord Appropriate cutting mechanism in place of the guard so that the cord does not extend to the outside of the guard Or, as shown in FIG. 5, below the mowing means by a predetermined distance. The guard member can be held even at the time of mowing the guard A range that does not deviate from the spirit of the present invention, such as enabling use as a sled member in Of course, various modifications can be made within.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a preferred embodiment of a brush cutter according to the present invention.

FIG. 2 is a schematic side view of the brush cutter shown in FIG.

FIG. 3 is a partial cross-sectional explanatory view showing an attached state of a guard in the brush cutter shown in FIG.

FIG. 4 is a schematic side view showing another embodiment of the brush cutter according to the present invention.

FIG. 5 is a side view of a main part showing still another embodiment of the brush cutter according to the present invention.

[Explanation of symbols]

10 device body, 12 engine, 1
4 sheath tube, 16 mowing blade (mowing means), 18 handle, 20 circular frame member, 22 guard, 24
Mounting member, 26 passing member, 28 eccentric cam, 30 leaf spring, 32 throttle lever,
34 side guards, 36 lever members, 38 rod members,

Claims (2)

[Scope of utility model registration request] 1. A hand-held brush cutter that transmits a driving force of an engine arranged at a rear portion of an equipment main body to a brush cutting means at a front portion of the main body through a sheath tube and grips a handle to perform a brush cutting operation. A brush cutter having a guard member having a shape slightly larger than the rotation diameter of the brush cutter mechanism is provided above the brush cutter, and the guard member is configured to be flipped up to the brush cutter. 2. A guard member is formed of a circular frame member, and a part of the circular frame member is pivotally attached to a predetermined position of the sheath pipe and an operation lever is provided near the handle, and the operation lever and the circular frame member are connected to each other. The brush cutter according to claim 1, wherein the brush cutter is connected through a rod member.