JPH0219000Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a stand that also serves as a handle for a brush cutter and is equipped with a frame that can be used both as a handle and as a stand.

[Conventional technology]

In conventional engines for this type of brush cutter,
For example, in the invention described in Japanese Utility Model Application Publication No. 59-88228, as shown in FIG. e are each integrally formed. Note that the handle d extends above the spark plug f, and the stand e extends below the fuel tank g and has the function of an engine stand. Both the handle d and the stand e are provided with hollow holes h and i, respectively, for convenient gripping by an operator.

[The problem that the idea aims to solve]

As mentioned above, in the conventional brush cutter engine, the stand e and the handle d are formed independently, so the stand e is not required when not working, for example, when filling fuel and when starting. However, not only is stand c unnecessary during work, but stand e is also removed when the brush cutter is tilted during work.
It hits the worker's body, making it very difficult to work. Further, since the stand e and the handle d are each formed separately, the weight increases accordingly, and there are problems that need to be solved, such as making it difficult for an operator to carry it while working.

[Means to solve the problem]

This idea was devised in view of the above-mentioned circumstances, and a cutting blade is rotatably supported at one end of an outer tube in which a transmission shaft is rotatably installed, and a cutting blade is provided at the other end of the outer tube. , in a brush cutter capable of rotationally driving the cutting blade via the transmission shaft, the outer tube is bent into a substantially U-shape that straddles the side of the engine case fixed to the other end of the outer tube, and both ends thereof are bent, respectively. A frame body is pivotally supported by bearings formed on opposing sides of the engine case, and a direction opposite to the direction of extension of the outer tube and a direction almost perpendicular to the direction of extension of the outer tube from the center of swing of the frame body. Elasticity installed between locking portions formed along each side and capable of locking the frame, and the engine case located on the opposite side with respect to the center of swing within the swinging plane of the frame and the frame. The present invention proposes a stand that also serves as a handle for a brush cutter.

[Effect]

In the above structure, by using a single frame as both the stand and the handle, the separate functions of the engine stand and the handle can be combined.
Eliminates the need for separate installations and clarifies the roles of the stand and handle during work and non-work, so they do not get in the way, and can be made lighter.Furthermore, the stand and handle can be changed in status with one touch. It can be done with

〔Example〕

This invention will be explained in detail below with reference to the accompanying drawings.

Figures 1 and 2 are a side view and a rear view of essential parts of a brush cutter based on this invention. In the figures, 1 is an engine case that constitutes a part of this invention, and the front end of the engine case A proximal end portion of an outer tube 3, which is pipe-shaped and has a transmission shaft 2 rotatably installed therein, is fixed to the tube. A cutting blade 4 is rotatably supported at the distal end of the outer tube 3, and the cutting blade 4 is connected via a transmission shaft 2 to a drive shaft (not shown) of an engine that can be rotationally driven.

Attachment holes 5, which are bearing portions, are formed in opposing sides of the engine case 1, which is fixed to the other end of the outer tube 3, respectively. It is also possible to form a boss 6 that bulges outward as shown in the figure in the vicinity surrounding the mounting hole 5. The frame body 7, which is bent into a substantially U-shape spanning the side from one mounting hole 5 to the other mounting hole 5, can rotate the mounting portions 7a, which are bent in substantially opposing directions at both ends. By inserting it into the mounting hole 5, it is swingably mounted to the engine case 1. Note that the frame body 7 can be formed by bending a rod having a circular or square cross section. Furthermore, the rod can be solid or hollow.

As shown in FIG. 3, the swing center 1 of the frame 7
Locking portions 8 and 9 are formed in a direction opposite to the direction of extension of the outer tube 3 and in a downward direction substantially orthogonal to the direction of extension of the outer tube 3, respectively. In this case, the locking part is a convex stepped part). A coil spring 11, which is an elastic means, is installed between the pin 7b of the frame 7 and the pin 1a of the engine case 1, which is located on the opposite side with respect to the swing center 10 of the frame 7, substantially within the swing plane of the frame 7. will be erected.

As shown in FIG. 5, by making the frame 7 swingable upwards (in the direction of arrow C), it is possible not only to protect the plug 14, which is easily damaged by the frame 7, but also to make it easier to carry. It is also possible to configure the frame 7 to be used as a convenient handbag. In this case, the locking portion 9 is formed upward from the pivot center 10 of the frame 7.

As shown in FIGS. 3 and 6, when not cutting grass, the frame 7 can be used as an engine stand, that is, the frame 7 can be held against the spring 11 in the direction of arrow A. The frame body 7 is rotated beyond the dead center 13 until the base of the frame body 7 comes into contact with the locking part 9.

At this time, the spring 11 moves in a direction (arrow A
direction) to prevent the frame body 7 from spontaneously swinging back to its original state.

When cutting the grass, as shown in FIGS. 4, 7, and 8, the frame 7 is swung in the direction of arrow B until it comes into contact with the locking part 8. death,
Used as a handle when mowing. In this case as well, the frame body 7 is pressed in the direction of arrow B by the spring 11 from a position beyond the dead center 13, thereby preventing the frame body 7 from returning naturally to its original stand state.

[Effect of idea]

As described above, the stand that also serves as a handle for a brush cutter according to this invention has the following effects.

(1) When mowing is not being done, the frame 7 can be used as a stand, and when mowing is being done, the frame 7 can be swung and used as a handle, thus serving both as a stand and a handle. Therefore, the number of parts can be simplified.

(2) Attractive force of coil spring 11 and locking parts 8, 9
As a result, the frame body 7 can be put into the stand and handle states with a single touch, and it is possible to immediately respond to frequent changes in the pattern of mowing work and non-work.

(3) During mowing work, the frame body 7 rotates from the stand state to the handle state, making it easy to work without touching the body during the work.

(4) By making the frame 7 swingable upward, it is possible to protect the easily damaged plug 14, and it can also be used as a hand grip for easy carrying.

[Brief explanation of the drawing]

1 and 2 are a side view and a rear view of essential parts of a brush cutter according to this invention, and FIGS. 3 and 4 are side views showing different swinging states of the frame body according to this invention, and FIGS. 5 and 6 are perspective views of main parts showing other embodiments of this invention, FIGS. 7 and 8 are perspective views showing the brush cutter in a non-working state and a working state, respectively, and FIG. 9 is a perspective view of a conventional brush cutter. FIG. 3 is a front view of the engine. In the figure, 1... engine case, 3...
...Outer tube, 5...Mounting hole (bearing part), 6...Boss,
7... Frame body, 7a... Attachment part, 8, 9... Locking part, 10... Swing center of frame body, 11... Coil spring (elastic means).

Claims (1)

[Claims for Utility Model Registration] 1. A cutting blade 4 is rotatably supported at one end of an outer tube 3 in which a transmission shaft 2 is rotatably installed;
In a brush cutter that is provided at the other end and is capable of rotationally driving the cutting blade 4 via the transmission shaft 2, a substantially U-shaped blade that straddles the side of the engine case 1 fixed to the other end of the outer tube 3 is provided. A frame body 7 has both ends pivotally supported by bearing portions 5 formed on opposite sides of the engine case 1, and the outer tube 3 is bent from the swing center 10 of the frame body 7. Locking portions 8 and 9 are formed along directions opposite to the extension direction and substantially orthogonal to the extension direction of the outer tube 3 and are capable of locking the frame 7, and the frame 7 and the oscillation of the frame 7. Swing center 1 in the moving plane
A stand that also serves as a handle for a brush cutter, comprising an elastic means 11 installed between the engine case 1 and the engine case 1 located on the opposite side with respect to 0. 2. A gripping stand for a brush cutter according to claim 1, wherein the vicinity surrounding the bearing portion 5 is bulged outward. 3. The stand for holding and holding a brush cutter according to claim 1, wherein the locking portions 8 and 9 are convex portions. 4. The stand for holding and holding a brush cutter according to claim 1, wherein the locking portions 8 and 9 are recessed portions. 5. A stand that also serves as a handle for a brush cutter according to claim 1, wherein the frame body 7 has a circular or square cross section. 6. A stand that also serves as a handle for a brush cutter according to claim 1, wherein the frame body 7 is a solid body or a hollow body.