JPH0246652Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a folding device for a brush cutter that has a cutting blade attached to its tip and is driven to cut weeds and the like.

Conventionally, when transporting a brush cutter, it goes without saying that if you carry it by hand, but if you transport it by bicycle, motorcycle, small truck, etc., the length of the brush cutter is over 2 meters, so the cutting blade etc. will come out. Even in the case of heavy trucks or small trucks, the cutting blades could sometimes protrude from the loading platform, creating a risk of being unable to avoid danger and causing harm.

The present invention was made in order to solve the above-mentioned problems, and aims to provide a folding device for a brush cutter that allows the brush cutter to be folded into two, making it convenient for transportation and useful for preventing danger. The cutting blade bearing head can be separated from the divided part and replaced with a different angle depending on the purpose of use and the physique of the user.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view of a brush cutter incorporating a folding device according to the present invention, and FIG. 2 is a partially cutaway side view showing the folding device.

Bearing head 13 of cutting blade 1 and drive unit 2 A pipe-shaped support rod connecting the bearing head 13 on which the cutting blade 1 is attached and drive unit 2 is located at an intermediate position of the length of the pipe.
The mounting members 6, 6 are made of a flange connection of two foldably divided support rods 3a and 3b, and the flanges 6a, 6'a and 7a, 7'a are located at the positions forming the dividing point. ' and 7, 7' to the flange support rods 3a, 3b, and the respective flanges are connected to each other through fitting parts 14, 14' by a plurality of screws 12 arranged at appropriate pitches in the circumferential direction. It is connected so that it can be divided freely.

Furthermore, engagement and disengagement shafts 15 and 16 respectively provided in the support rods 3a and 3b engage with the transmission shafts 4 and 5 supported by bearings at positions corresponding to the dividing points of the flanges. The power of the drive unit is transmitted to the cutting blade. A rectangular hole 15a is bored in the engagement shaft 15, and a square engagement shaft 16 at the end of the transmission shaft 5 is removably inserted therein.

Further, in the mounting member 7 of one of the flanges, for example, 7a, there is a connecting member 9 in which a long hole 10 of a predetermined length is bored parallel to the axis of the support rod 3b, as seen in the illustrated embodiment. , is provided on the other opposing flange 6a side so as to cross the flange 6a or straddle its outer peripheral edge,
A connecting member 8 is provided in the mounting member 6 of the flange 6a at a position in contact with the side surface of the connecting member 9 in close proximity to the flange 6a, and a screw hole is provided at an appropriate position in the connecting member 8, so that a screw 11 can be inserted into the connecting member 8. The connecting member 9
It is made so that it can be screwed through the elongated hole 10 of.

The present invention is constructed as described above, and next, a case in which the invention is folded will be explained.

Figure 3 shows that when folding, as shown in Figure 2,
Two support rods 3a, which are normally combined into one,
3b is shown in the initial state after being separated, FIG. 4 shows the state in the middle of folding, and FIG.
It shows the shape of the rectangular part of the figure, and is a view seen from the - direction in FIG.

That is, when both the left and right flanges in FIG. 2 are in the connected state, loosen the screw 11, remove the screw 12 connecting the flange, and as shown in FIG. Separate the flanges, disengage the engagement shafts 15 and 16, and open the elongated hole 1.
Centering on the screw 11 that has moved to the other end in 0,
The book support rods 3a and 3b are rotated toward the connecting member 9 and folded (see FIG. 4).

In addition, if you want to return the folded item to its original position, operate in the opposite manner to the above, and as shown in Fig.
Align the axis and rectangular sides of the engaging/disengaging shaft 16 facing the hole 15a, push them into each other, and tighten the screws 11, 12 as shown in FIG. 2 to restore the state of use.

In addition, in the embodiment, the means for connecting the support rods to be divided is screwed together through the long holes of the connecting member provided in the flange, and separation is also possible, but this is not a limitation; for example, the connecting means may be connected by a chain. You may do so. However, when using the connecting method according to the present invention, the connecting member is provided parallel to the axis of the support rod, so when folded, the two support rods become parallel, and there is an advantage that it can be folded compactly without any movement. .

As is clear from the above description, according to the present invention, in its use condition, the right flange, the left flange, the connecting members 8 and 9, the engaging and disengaging shafts 15 and 1
6, furthermore, the support rods 3a and 3 are divided into two parts by coupling with the fitting parts 14 and 14', respectively.
In combination with b and any desired support rod 3a with a variable blade bearing head angle, not only an extremely strong integral connection is ensured, but also it is easy to transport and store when not in use. In some cases, the brush cutter can be easily folded in half, and it can also be easily restored to the operating condition.Furthermore, when a connecting member with a long hole is used, when folded, Since the divided members can be prevented from moving inadvertently, the brush cutter can be easily transported and is also useful for preventing danger. Furthermore, the scope of use can be expanded by removing the screws from the split portion and replacing the cutting blade bearing head with a different angle depending on the purpose of use and the physique of the user.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is a perspective view of a brush cutter implementing the invention, Fig. 2 is a side view with a part of the folding device cut away, and Figs. 3 and 4 are cross-sectional views. FIG. 5 is a partially cutaway side view of the initial folded state and the partially folded state, respectively, and FIG. 5 shows a drawing in the − direction of FIG. 3. 1... Cutting blade, 2... Drive unit, 3a, 3b... Support rod, 4, 5... Transmission shaft, 6a, 6'a, 7a,
7'a...Flange, 8, 9...Connection member, 10
...Long hole, 11, 12...Screw, 14, 14'...
...Fitting part, 15, 16... Engagement/disengagement shaft.

Claims (1)

[Scope of utility model registration request] In a brush cutter that cuts weeds and other debris by rotating a cutting blade 1 mounted on a bearing head 13 provided at the tip via a transmission shaft inserted into a pipe-shaped support rod, the above-mentioned support rod and When the transmission shaft is divided into two parts so that they can be attached and detached at intermediate positions of their lengths, the support rods 3a and 3b have flanges 6a and 6a, respectively, provided as prescribed.
6'a, 7a, 7'a, connecting members 8, 9, and fitting parts 14, 14', and the transmission shafts 4, 5 are cut and formed at opposite ends, respectively. Engage/disengage shafts 5, 16 with specified shape and dimensions
The connecting means of the splittable support rods are connected to flanges 6a and 6' connected to each other.
A, 7a, 7'a, a connecting member 9 provided on one of the flanges and having a long hole 10 parallel to the axis of the support rod, and a connecting member 8 provided on the other flange are screwed together. The folding device for a brush cutter is characterized in that the screw 11 that connects the connecting member 8 and the connecting member 9 is movable within the elongated hole 10 so that it can be pulled out and folded.