JPH0525389Y2 - - 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. 11, such a power brush cutter has a pipe member 3 fixed to a main body casing 2 of an engine 1, and a flexible drive shaft (not shown) installed inside the pipe member 3. There is one in which the cutting blade 5 connected to the end of the drive shaft is rotated by the engine 1. Note that 7 is a handle for operation, and 8 is a cover for preventing scattering of cut materials.

Such a power brush cutter, as shown in FIG.
A ring member 17 to which a hook 16 is attached, which crosses the two belts 11 and 12 via a buckle 13 and engages the main body casing 2 of the power brush cutter.
The ends of the belts 11 and 12 are connected to each other by a buckle 14, while each belt 1
A shoulder strap device 1 attached to a shoulder pad member 15 made of a foam covered with a soft synthetic resin, respectively.
0, it is supported by both shoulders of the brush cutter as shown in FIG. The operator then operates the operating handle 7 of the power brush cutter to apply the cutting blade 5 to the object to be cut (for example, agricultural crops or weeds) to cut the object. .

<Problems to be Solved by the Invention> However, in such a conventional shoulder strap device for a power brush cutter, the two shoulder pad members 15 attached to each of the two belts 11 and 12 in a sash-like manner are Since the power brush cutter is supported by It was unsuitable for work. Furthermore, the shoulder rest pad member 15 may slip off from the shoulder during the work, making it impossible to stabilize the support of the main body casing 2, resulting in reduced work efficiency and impaired safety.

In addition, in the conventional shoulder strap device 10, the shoulder strap device 10 is attached to the worker in a cross-legged manner and cannot be easily removed. If it cannot be removed in a short time, serious injury may result.

Furthermore, the main body casing 2 of the power brush cutter supported by the hook 16 of the conventional shoulder hanging device 10 comes into direct contact with the lower back or buttocks of the worker, so the weight of the power brush cutter may cause excessive pressure on the human body or the power The vibrations of the brush cutter were transmitted to the human body, resulting in a very poor working feel, making it unsuitable for long hours of work.

In view of these conventional problems, it is an object of the present invention to provide a shoulder strap device for a portable working machine that is easy to attach and detach, and has good working feeling, workability, and safety.

<Means for solving the problem> For this reason, the shoulder strap device for a portable working machine of the present invention has the following features:
A shoulder pad member made of a flexible member with two forked portions corresponding to the shape of both shoulders of the worker extending from the base, and a shoulder rest pad member that is connected to each of the forked portions of the shoulder pad member and extends from the front side from the shoulder of the worker. 2 located in
a single second belt part, one end of which is connected to the base of the shoulder pad member; Two thirds located at the front via
A buckling device configured to include a belt portion and a plurality of connecting members that can be connected to each other and disconnected by a single operation, the first belt portion and the third belt portion of the buckling device. When the plurality of connecting members are connected to each other, the first belt portion and the third belt portion are all in a connected state, and when the plurality of connecting members are disconnected from each other, the two third belts are connected through the connecting member. The third belt part is attached to the third belt part and engages with the main body casing of the portable working machine to close the main body casing. The present invention includes a support member for supporting, and a protection member attached to the third belt portion such that the support member is positioned in front of the third belt portion.

<Function> The bifurcated parts corresponding to both shoulders of the shoulder rest pad member made of a flexible member stably contact both shoulders, so that the weight of the portable work machine is not applied unevenly to both shoulders during work. This prevents the shoulder strap device from slipping off from both shoulders, improving work feeling, work efficiency, and safety.

In addition, when the buckle device is operated single-handedly in an emergency, the connection between the connecting members becomes disconnected, and the two third belt sections disposed from the rear of the worker to the front through both sides become unconnected. Since it is released, the shoulder strap can be easily and quickly removed from the worker's upper body.
Therefore, safety in the event of an emergency such as a fire is improved.

Furthermore, since the protective member disposed on the back side of the support member is interposed between the waist or buttocks of the human body,
The main body casing of the portable working machine does not come into direct contact with the human body, preventing the propagation of vibrations and the like, thereby improving the working feeling.

<Example> An example of the present invention will be described below with reference to 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 provided with a substantially U-shaped shoulder rest pad member 23 having two forked portions extending from a base portion corresponding to the shape of both shoulders of the worker.

The shoulder pad member 23 has a substantially U-shaped shape made of 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 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.

Further, as shown in FIG. 2, the shoulder rest member 21 includes:
A slit 21c is formed to allow the shoulder rest member 21 to easily deform into a three-dimensional shape similar to the shape of both shoulders of the worker.

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.
A first belt member 24 as a first belt portion to which is attached a first belt member 24 as a first belt portion, and a first belt member 25 as a first belt portion to which a buckle member 30 that engages with a tongue member 36 is attached to the tip end thereof. installed.

Further, the bifurcated portions 21a and 21b of the shoulder rest member 21
A belt through hole 21e is formed at the base of the belt through hole 21e, and a second belt portion serving as a second belt portion is connected to an end of the belt through hole 21e.
A belt member 27 is attached. A third belt member 28 and a third belt member 29 are attached to the belt branching member 26 . The third belt member 28 includes two belt members 28A, 28
The belt member 28A is 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, which will be described later, is provided at its end. can be attached to. Also, belt member 28B
One end is connected to the connecting member 34, and the other end is connected to the tongue member 36.

A tongue member 37 is attached to the end of the third belt member 29 and is detachable from the buckle member 30 .

As shown in FIGS. 4 and 5, the protective member 33 has a foam 3 made of, for example, 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.
3b is enclosed. Further, a groove portion 33c having a substantially V-shaped cross section is formed in the outer skin 33a to improve the section modulus and provide bending rigidity. Furthermore, the outer skin 33a is curved so that a concave curved surface is formed on its back surface, so that it can be closely and stably abutted against the waist or buttocks of the worker when the shoulder strap device 20 is worn.

Here, a buckle device is provided which includes the tongue member 36, the tongue member 37, and the buckle member 30 as a plurality of connecting members that can be connected to each other and can be disconnected by a single operation.

Referring to FIG. 3, details of the internal structure of the buckle member 30 of the buckle device will be described in detail.

The buckle case 30a to which the belt member 25 is attached has penetration spaces 30b formed on both sides into which the tongue members 36 and 37 are inserted, respectively, and an engagement plate 30d is provided on the back surface of the buckle case 30a. The protrusion 30e is arranged to protrude from the hole 30c into the through space 30b. and,
The engagement plate 30d is fixed by a bolt 30h to a convex portion 30g on the back surface of a push button 30f, which is pushed outward by a spring 30i that is fitted from the outside of the buckle case 30a and stored in the fitting space 30b. . In addition, 30j is the tongue member 3
6 and 37 are springs pushing outward, and 30k is a back cover.

In this way, when the tongue members 36 and 37 are inserted into the insertion space 30b of the buckle case 30a (only the tongue member 36 is inserted in FIG. 3), the tips of the tongue members 36 and 37 are engaged. When the engagement plate 30d is moved downward in the figure via the protrusion 30e and the holes A formed at the tips of the tongue members 36 and 37 come to the engagement protrusion 30e, the engagement plate 30d is protruded by the spring 30i and the tongue member 3
Nos. 6 and 37 are prevented from coming off. On the other hand, when the tongue members 36 and 37 are engaged, the push button 30
When f is pressed, the engagement plate 30d moves downward in the figure, and the tongue members 36, 37 are projected outward by the spring 30i and are disengaged.

FIG. 6 shows a state in which a worker is wearing the shoulder strap device 20 of this embodiment.

As described above, since the approximately U-shaped shoulder rest pad member 23 is provided, which has a three-dimensional shape close to the shape of both shoulders of the worker, the shoulder rest pad member 23 has a good wearing feeling, and the shoulder rest device 20 can be stably placed on both shoulders. This can prevent the weight of the power brush cutter from being applied unevenly to both shoulders during work and prevent the shoulder strap device 20 from shifting, greatly improving the feel, workability, and safety of the brush cutter. can be improved.

In particular, in the above embodiment, since the shoulder rest pad member 23 is constructed from a single substantially U-shaped member, the mounting feeling is better than when constructed by connecting a plurality of members to each other, and the number of parts is reduced. less,
It also has excellent manufacturability.

Also, the buckle member 30 and the tongue members 36, 37
and the belt member 24,
28B, 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, since the protection member 33 is attached to the rear of the hook member 32, 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, thereby preventing the worker's body from being subjected to excessive pressure or vibration. This prevents the body from transmitting the harmful substances to the body, improving the working feeling and making it possible to withstand long hours of work.

In addition, since the structure is simple in that the foam 33b is inserted into the protective member 33 and the outer skin 33a formed by surface blow molding, manufacturing is simple.
Significant cost reductions can be achieved.

In this embodiment, the connection between the third belt sections and the connection between the first belt section and the third belt section on one side can be released, respectively.
As shown in the figure, the third belt portion disposed on the front side of the worker from the rear side via both sides may be connected to a different buckle member or tongue member. Even in this case, similarly to the embodiment, the connection between the third belt portions can be released and the shoulder strap device 20 can be easily removed from the worker.

The point is that when the first belt part and the third belt part are connected to each other by the plurality of connecting members of the buckling device, the first belt part and the third belt part are all connected, and the plurality of connecting members The buckling device may be connected to any one of the plurality of connecting members of the buckling device so that when the two third belt portions are disconnected from each other, the connection between the two third belt portions via the connecting member is released.

Further, in the embodiment, the connecting members of the buckle device are connected to each other by mechanical engagement between the buckle member and the tongue member, but it is also possible to use the attractive force of a magnet.

FIG. 8 shows still another embodiment of the present invention. This is a shoulder rest member 4 in which the shoulder rest member 21 integrally formed in the above-mentioned embodiment is divided into two parts corresponding to both shoulders.
0 and 41 are connected by a connecting member 42 made of metal or synthetic resin.
In this way, the shape of the shoulder rest member is simplified,
Cost reduction can be achieved.

FIG. 9 shows still another embodiment of the present invention. This is configured such that the bifurcated parts 21a and 21b of the shoulder rest member 21 are extended and integrally formed, and the extended parts of each of the bifurcated parts 21a and 21b are configured as a first belt part.

The ends of the bifurcated portions 21a and 21b where the belt members 29 and 28B are connected are removably connected by a buckling device 30 similar to the embodiment described above. In this way, it is possible to further improve the stable support effect of the power brush cutter, and to reduce costs by reducing the number of parts and assembly man-hours.

FIG. 10 shows still another embodiment of the present invention.

This is the bifurcated portions 21a and 21b of the shoulder member 21.
are extended and integrally formed, and each bifurcated portion 21a, 2
The extending portion of 1b is configured as a first belt portion, and the first
Connecting tapes 44, 45 made of Velcro tape (registered trademark) are attached to the belt portions, and the first belt portions are removably connected to each other by a single operation via the connecting tapes 44, 45. Here, each of the connecting tapes 44 and 45 constitutes the connecting member of the present invention, and the assembly of these constitutes the buckling device of the present invention. This device also provides the same effects as the above-mentioned embodiment, but since the expensive buckling device 30 is not used, it is possible to further reduce costs.

The connection structure using the connection tapes 44 and 45 in this embodiment can also be applied to the connection between the belt members 24, 25, 29, and 28B in each of the above embodiments.

In the above embodiment, the shoulder strap device 20 for supporting the power brush cutter on the shoulder of the worker was explained.
It can be used as a shoulder device for supporting not only a power brush cutter but also a portable working machine such as a power sprayer (a device for spraying pesticides etc. using power).

<Effects of the invention> As explained above, the shoulder strap device for a portable working machine of the present invention is easy to put on and take off, has excellent work feel, workability, and safety, and is particularly compatible with the shape of both shoulders of the worker. By employing a shoulder pad member made of a flexible member, each of which has two forked portions extending from the base, the shoulder pad member has the advantage of providing a better wearing feeling.

[Brief explanation of the drawing]

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. A usage explanatory diagram of the same as above, FIG. 7 is a diagram showing another embodiment of the same as above,
FIG. 8 is a diagram showing still another embodiment of the same, FIG. 9 is a diagram of still another embodiment of the same, FIG. 10 is a diagram of still another embodiment of the same, and FIG. 11 is a conventional example. FIG. 12 is a perspective view of a conventional shoulder strap device, and FIG. 13 is an explanatory diagram of the use of the same. 2...Body casing, 21...Shoulder device, 2
1a, 21b... bifurcated portion, 22... padded member,
23...Shoulder pad member, 24, 25, 27, 2
8A, 28B, 29... Belt member, 30... Buckle member, 30f... Push button, 32...
...Hook member, 33...Protection member, 36, 37...
...Tongue member, 40, 41...Shoulder rest member, 42...
...Connection member, 44, 45...Connection tape.

Claims (1)

[Scope of utility model registration request] A shoulder pad member made of a flexible member with two forked portions corresponding to the shape of both shoulders of the worker extending from the base, and a shoulder rest pad member that is connected to each of the forked portions of the shoulder pad member and extends from the front side from the shoulder of the worker. two first belt portions disposed in the shoulder pad member; a single second belt portion having one end connected to the base of the shoulder rest pad member;
The two third belt parts connected to the other end of the second belt part and disposed from the rear side of the worker to the front side via the armpit part can be mutually connected and can be uncoupled with a single operation. a buckling device configured to include a plurality of connecting members, the first belt portion and the third belt portion being connected to each other when the plurality of connecting members of the buckling device are connected to each other. 3
A plurality of the buckling devices are configured such that when all the belt portions are in a connected state and the plurality of connecting members are disconnected from each other, the two third belt portions are disconnected from each other via the connecting member. a support member that is connected to any of the connection members of the portable working machine, and that is attached to the third belt portion and engages with and supports the main body casing of the portable working machine; A shoulder strap device for a portable working machine, comprising: a protection member attached to a third belt portion.