JPH056735Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a shoulder strap device for a portable working machine, which is used by a worker to support a portable working machine, such as a power brush cutter, on both shoulders.

<Prior art> As shown in FIG. 8, a power brush cutter is constructed by fixing a pipe member 3 to a main body casing 2 of an engine 1, and inserting a flexible drive shaft (not shown) into the pipe member 3. There is one in which a cutting blade 5 connected to an end of a drive shaft is rotated by an engine 1. Note that 7 is a handle for operation, and 8 is a cover for preventing scattering of cut materials.

As shown in FIG. 9, such a power brush cutter has two
The ends of the belts 11 and 12 are crossed by passing through the annular ring member 17 to which the hook 16 that engages with the main body casing 2 of the power brush cutter is attached. The belts 11 and 12 are connected to each other by buckles 14, and shoulder pad members 15 made of foam covered with soft synthetic resin are attached to the shoulder straps 10. As shown in FIG. Supported by Then, the operator operates the operating handle 7 of the power brush cutter to apply the cutting blade 5 to the object to be cut (for example, crops or weeds) to cut the object. .

<Problems to be solved by the invention> However, in such a conventional shoulder strap device 10 for a power brush cutter, two
Since the power brush cutter is supported by the two shoulder pad members 15 attached to each of the book belts 11 and 12, the weight of the power brush cutter is applied unevenly to each shoulder, resulting in poor work feeling. It is very bad and the worker feels very fatigued.
It was unsuitable for long hours of work. Additionally, the shoulder pad member 15 may slip off from the shoulder during work, making it impossible to stably support the main body casing 2, reducing work efficiency and impeding safety. Ta.

The present invention was developed by focusing on the problems of the conventional technology, and aims to equalize the load of the weight of a portable working machine on the shoulders and prevent the shoulder strap from slipping off the shoulder. An object of the present invention is to provide a shoulder strap device for a portable working machine that can improve work feeling, work efficiency, and safety.

<Means for solving the problem> For this reason, the present invention attaches to the worker a belt section that is disposed from the worker's shoulders to the front, and from the shoulders to the front via the back and armpits. In a shoulder strap device for a portable working machine that supports the main body casing of the portable working machine on a support member attached to a belt section passing through the armpits, bifurcated parts corresponding to the shape of both shoulders of the worker are respectively extended from the base. A shoulder pad member made of a single flexible member connected in a substantially U-shape is provided, and a belt portion disposed from the worker's shoulder to the front is connected to each of the bifurcated portions of the shoulder pad member or belt-shaped. The belt part is integrally molded with the shoulder rest pad member, and a belt part is connected to the base of the shoulder rest pad member, which is disposed from the rear face of the worker via the armpit part to the front face of the worker.

<Function> Since the above configuration is adopted, the bifurcated portions corresponding to both shoulders of the shoulder pad member made of a single flexible member connected in a substantially U-shape stably abut on both shoulders. Therefore, the weight of the portable working machine will not be unevenly applied to both shoulders during work, and the shoulder strap will not shift from both shoulders, thereby improving work feeling, work efficiency, and safety. In particular, since the shoulder rest pad member is composed of a single member connected in a substantially U-shape, it provides a better wearing feeling than one constructed by connecting multiple members together, and requires fewer parts and is easy to manufacture. It is also excellent in sex.

<Example> An example of the present invention will be described below based on FIGS. 1 to 5.

This embodiment shows a shoulder strap device 20 that supports a power brush cutter as a portable working machine.

The shoulder rest device 20 is equipped with a shoulder rest pad member 23 that is connected in a substantially U-shape in which bifurcated portions corresponding to the shapes of both shoulders of the worker extend from a base portion.

This shoulder rest pad member 23 has a substantially U-shape molded from a soft synthetic resin (e.g., vinyl chloride, vinyl acetate), and has bifurcated portions 21a and 21b extending from the base, respectively, corresponding to the shape of both shoulders of the worker. It is composed of a single continuous shoulder rest member 21, and pad members 22 made of foam made of polyurethane, rubber sponge, etc., which are attached to corresponding parts of both shoulders on the back side of the shoulder rest member 21.

A belt through hole 21d is formed at the tip of the bifurcated portions 21a and 21b of the shoulder rest member 21, and a tongue member 36 is formed at the tip of the belt through hole 21d.
and a belt member 25 having a buckle member 30 attached to its tip end that engages with a tongue member 36. Such belt members 24, 25
This corresponds to the belt portion of the present invention that is connected to each of the bifurcated portions of the shoulder rest pad member and is disposed from the worker's shoulder to the front.

Referring to FIG. 3, details of the internal structure of the buckle member 30 are shown. A through space 30b into which the tongue T is inserted is formed in the buckle case 30a to which the belt member 25 is attached, and an engagement plate 30d is attached to the back surface of the buckle case 30a, and an engagement protrusion 30e integrally formed therein is inserted through the hole 30c. A push button 3 is disposed so as to protrude into the through space 30b, and the engagement plate 30d is pushed outward by a spring 30i that is inserted into the buckle case 30a from outside and stored in the insertion space 30b.
It is fixed to the convex portion 30g on the back surface of 0f with a bolt 30h. Note that 30j is a spring that pushes the tongue outward, and 30k is a back cover.

In this way, attach the tongue T to the buckle case 3.
When the tongue T is inserted into the insertion space 30b of 0a, the tip of the tongue T moves the engagement plate 30d downward in the figure via the engagement protrusion 30e, and the hole A formed in the tongue T moves.
When it reaches the engagement protrusion 30, the engagement plate 30d is projected by the spring 30i to prevent the tongue T from coming off. On the other hand, when the push button 30f is pressed while the tongue is in the engaged state, the engagement plate 30d moves downward in the figure and the tongue T is projected outward by the spring 30j, so that the engagement is released.

Further, the bifurcated portions 21a, 21 of the shoulder rest member 21
A belt through hole 21e is formed at the base of b,
A belt member 27 having a belt branching member 26 connected to an end thereof is attached to the belt through hole 21e. The belt branch member 26 was provided with a hook member 32 as a support member for supporting the main body casing 2 of the power brush cutter, and a connecting member 34 supporting a protection member 33 to be described later was attached to the end thereof. A belt member 28 and a tongue member 3 that can be freely engaged with and detached from a buckle member 30 at its end.
7 is attached to the belt member 29. The connecting member 34 is connected to a tongue member 36 via a belt member 35. In addition,
The belt members 27, 28, 29, and 35 constitute a belt section that is disposed on the front side of the worker, passing from the worker's shoulders to the back and armpits.

As shown in FIGS. 4 and 5, the protection member 33 has a foam material 33b made of polyurethane, rubber sponge, etc., inside an outer skin 33a made of vinyl chloride or the like, which is formed into a bag shape by surface blow molding. Constructed by enclosing. In addition, the outer skin 33a
A groove portion 33c having a substantially V-shaped cross section is formed in the groove portion 33c to improve the section modulus and provide bending rigidity. Further, the outer skin 33a is curved so that a concave curved surface is formed on the back surface thereof, so that the outer skin 33a is closely and stably abutted against the waist or buttocks of the worker when the shoulder strap device 20 is worn.

FIG. 6 shows the worker wearing the shoulder strap device 20 of this embodiment.

As described above, since the shoulder rest pad members 23 are provided in a substantially U-shape that has a three-dimensional shape close to the shape of both shoulders of the worker, the shoulder rest device 20 can be stably mounted on both shoulders. It is possible to prevent the weight of the power brush cutter from being applied unevenly to both shoulders and to prevent the shoulder strap device 20 from shifting during work, and it is possible to improve the feel, workability, and safety of the brush cutter.

In particular, since the shoulder rest pad member 23 is composed of a single member connected in a substantially U-shape, it has a better wearing feeling than one constructed by connecting a plurality of members, and has fewer parts. Since it can be integrally molded using a flexible member, it has excellent manufacturability.

In addition, the buckle member 30 and the tongue members 36, 3
7 in front of the worker, and belt member 2
4, 35, 25, and 29 can be mutually connected or separated, and the shoulder strap device 20 can be easily and quickly attached to and detached from the human body. Therefore, it can be quickly removed in the event of an emergency such as a fire, which greatly improves safety.

Furthermore, a protective member 33 is provided behind the hook member 32.
Since the main body casing 2 of the power brush cutter supported by the shoulder strap device 20 does not come into direct contact with the worker's body, it is possible to prevent the worker's body from being excessively pressed and vibrations from being transmitted to the worker's body, thereby making it easier to carry out the work. The feeling is improved and it can withstand long hours of work. Moreover, the protective member 33 has a foam 3 inside an outer skin 33a formed by surface blow molding.
Since it has a simple structure in which 3b is interpolated, manufacturing is simple and costs can be significantly reduced.

FIG. 7 shows still another embodiment of the present invention. In this embodiment, the bifurcated portion 21 of the shoulder rest member 21 is
The shoulder rest member 2 includes band-shaped portions 24a and 25a disposed from the shoulders of the worker to the front of the shoulders a and 21b, respectively.
These belt-shaped portions 24a and 25a correspond to the belt portions 24 and 25 of the embodiment shown in FIG. A belt member 3
5 and 29 are connected, and the band-shaped portions 24a and 25a are detachably connected to each other by a buckle device 30. In this way, it is possible to further improve the stable support effect of the power brush cutter, and also to reduce the number of parts and assembly man-hours, thereby reducing costs.

In the embodiment, the buckle member 30, the tongue members 36, 37, and the protection member 33 are shown. However, for example, a conventional shoulder rest pad member as shown in FIG. 8 may be used. Even if the shoulder pad member having the bifurcated portion of the present invention is provided instead of 15,
Similarly, it is possible to prevent the weight of the power brush cutter from being applied unevenly to the shoulders and from slipping off the belt, thereby improving workability and safety.

Further, in the above embodiment, the shoulder strap device 20 for supporting a power brush cutter on the shoulder of the worker was explained, but it is not limited to a power brush cutter, and for example, a power sprayer (a device for spraying agricultural chemicals etc. using power), etc. It can be used as a shoulder strap to support portable working equipment.

<Effects of the invention> As explained above, the shoulder strap device for a portable working machine of the invention has excellent work feel, workability, and safety, and in particular, the bifurcated parts that correspond to the shape of both shoulders of the worker are attached to the base. Abbreviation U extended from
The use of a shoulder pad member made of a single flexible member continuous in a letter shape has the advantage of better mounting feeling, fewer parts, and excellent manufacturability.

[Brief explanation of drawings]

Figure 1 is an overall configuration diagram of one embodiment of the present invention, Figure 2
The figure is a sectional view of Fig. 1, Fig. 3 is a sectional view of Fig. 1, Fig. 4 is a sectional view of Fig. 1, Fig. 5 is a sectional view of Fig. 1, and Fig. 6 is a sectional view of Fig. 1. 7 is a diagram showing still another embodiment of the same as the above, FIG. 8 is an overall configuration diagram of a conventional power brush cutter, FIG. 9 is a perspective view of the shoulder strap device of the same, and FIG. 10 is a usage explanatory diagram of the same as above. 2... Main body casing, 20... Shoulder hanging device, 2
1a, 21b...bifurcated portion, 21...shoulder rest member, 2
2... Pad member, 23... Shoulder pad part, 2
4, 25, 27, 28, 29, 35... Belt member.

Claims (1)

[Scope of utility model registration request] A belt section, which is installed from the worker's shoulders to the front and from the shoulders to the front via the back and armpits, is attached to the worker, and the support member attached to the belt section, which passes through the armpits, allows mobile work to be carried out. In a shoulder rest device for a portable working machine that supports the main body casing of the machine, the shoulder rest consists of a single flexible member that is connected in a substantially U-shape with two forked parts corresponding to the shape of both shoulders of the worker extending from the base. A pad member is provided, and a belt portion disposed from the shoulder of the worker to the front is connected to each of the bifurcated portions of the shoulder rest pad member, or a belt portion is integrally molded with the shoulder rest pad member. A shoulder strap device for a portable working machine, characterized in that a belt portion disposed from the rear side of the worker to the front side of the worker is connected to the base portion of the device.