JPS6356214A - Back carrying tool - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

[Field of Industrial Application] - This invention relates to a shoulder strap used when carrying something on one's back.Specifically, the shoulder strap that is hung on the shoulder when carrying a backpack has a structure that prevents the members from coming off the shoulder under any circumstances. Concerning what is composed of.

[Conventional technology]

The backpack implement mentioned above is used for various purposes, and here, as an example, we will explain the backpack implement for a backpack-type power brush cutter used for mowing grass, etc., with reference to FIGS. 2 and 3. explain. That is, in the backpack-type power brush cutter, a prime mover 2 is rotatably supported by a support bracket 3 around a vertical axis on a backpack frame 1, and a rotary work body 5 is supported at the tip.
A handle rod 4 having a substantially U-shaped handle 7 at its intermediate portion is connected to the prime mover 2 via a flexible tube 6. A power transmission shaft (as shown) whose base end is connected to the prime mover 2 and inserted through the flexible tube 6 and handle rod 4 has its tip end connected to the rotating shaft of the rotary work body 5 (when shown). ), the prime mover a
The rotational output of No. 2 is transmitted to the rotary work body 5 via the transmission shaft. The backpack frame 1 is provided with a back support part la on its upright part, a hook 1b provided above the engine in the backpack frame, a hook 1c provided at both ends of the lower end of the stand, Metal fittings 19 are hooked to both ends of the pair of left and right backpack bands 80 on the lc. A shoulder rest butt 9 is provided at the part of the double backpack band 8 that corresponds to the worker's eyebrows when carried on the back, while a buckle lla and a tongue 12 are provided to the part that corresponds to the worker's chest.
The chest band 10 is constructed by connecting the proximal ends of a pair of bells 11 and 12, each having a bell a. The chest band 10 is attached to the tongue 12 when the shoulder straps 8.8 are hung on the shoulders and the backpack frame l is carried on the back.
The belts 11 and 12 are connected to each other by inserting and engaging the buckle tta into the buckle tta, and are used to prevent each shoulder strap 8.8 from accidentally slipping off the shoulder. .

[Problems to be solved by the invention]

By the way, since the backpack-type power brush cutter described above is intended for long-time work, the lengths of the backpack straps 8, 8 of the backpack implement are relatively long. This is because by lowering the position of the prime mover 1!12 on the worker's back, the center of gravity of the worker carrying the prime mover can be lowered as much as possible. As a result, the portion of the backpack band extending from the shoulder to the backpack frame on the worker's back becomes longer. Work such as mowing grass using such a backpack-type power brush cutter is performed by moving both arms back and forth or up and down while grasping the handle 7. Therefore, if one shoulder is raised and the other shoulder is lowered during work, there is a pad between the lowered shoulder and the shoulder pad 9 provided on the shoulder strap 8. There is a problem in that a gap as shown by the imaginary line in Fig. 3 is created, and the backpack band 8 comes off the shoulder and falls off, causing trouble in the work. Unlike a school bag or a backpack, the reason why this type of shoulder strap for a brush cutter is provided with a chest band 10 as described above can be said to be to prevent the shoulder strap 8 from coming off. However, when the body leans significantly depending on the work situation, this chest band 10 cannot cope with the situation, and the backpack band 8 inevitably falls off the shoulder.
The reality is that when working on slopes such as hills, the chest band lO has little effect because the worker is forced to work with his or her body always tilted to the left or right. For this reason, it may be possible to deal with the above problem by moving the position of the chest band 10 upwards (near the shoulder rests 9, 9), but this would cause the chest band 10 to hang on the throat and cause discomfort. Not only that, but the pressure on the chest is so strong that it becomes impossible to endure long hours of work. In addition, it is very troublesome because it is necessary to attach and detach the chest band 10 every time the carrying frame l is put on or taken down. Because of this, there is also the inconvenience of not being able to respond quickly. This invention was devised under the above-mentioned circumstances, and in addition to being a part that can be attached and detached, the shoulder strap is designed to securely hold the shoulder strap on the body without falling off the shoulder under any circumstances. □It is an object of the present invention to provide a blue strap configured to do the following.

[Means to solve the problem]

In order to solve the above problem, the present invention takes the following technical measures. That is, the pair of left and right shoulder rests are equipped with a backpack frame for carrying a backpack object, and a pair of left and right shoulder straps whose ends are connected and fixed to the upper and lower parts of the backpack frame, respectively. The backpack frame is carried on the back by being hung on the shoulder, and each of the shoulder straps is a member that is located on the side of the back when the backpack frame is worn on the back, and is attached to each part near the shoulders, with a distance between them. Both ends of a connecting member that maintains the two at a predetermined distance are connected. Here, the above-mentioned predetermined spacing refers to the spacing between the members of each shoulder strap on the blue side near the shoulder when the backpack frame is carried on the back in a natural state, and the predetermined spacing below also refers to It shall have the same meaning as this.

[Action and effect]

In the present invention, when carrying the backpack frame on one's back, the connecting member located near the shoulder on the back side, and each of the shoulder straps maintains a constant interval between the members near the shoulder on the back side at the predetermined interval. It is configured as follows. That is, the connection member prevents the distance between the members of each shoulder strap from expanding beyond the predetermined distance near the shoulder. Therefore, even if a gap occurs between the shoulder rest and the member when the shoulder is moved up and down, the distance between the shoulder parts of each shoulder member is regulated by the connecting member, and therefore the shoulder rest is The spacing between the parts is so wide that it will not fall off your shoulder. In addition, even if your body is tilted to the left or right on a slope, and the parts of each shoulder rest shift in the direction of the inclination, the parts of the shoulder rest on the high ground side will not get caught on your neck and shift further. Therefore, this shoulder rest is connected to the member via the connecting member, and the member of the other shoulder rest (on the lowland side) does not shift any further, and the distance between the members near the shoulder of each shoulder rest is the predetermined distance above. Since the shoulder rest on the low-lying side does not come off the member or the shoulder. By the way, in the above-mentioned knapsack-type power brush cutter cited as an example of the conventional example, a chest band is provided to prevent the knapsack band from falling off the shoulder, but the effect is insufficient, and furthermore, The disadvantages were that it was troublesome to put on and take off the chest band, and when it was necessary to remove the backpack frame in an emergency, the presence of the chest band made it difficult to take immediate action. However, with the backpack implement of the present invention, the worker is freed from the troublesome operation of putting on and taking off the chest band as in the conventional example, and since there is nothing to tighten the chest, the worker does not feel cramped. Therefore, if the shoulder strap of the present invention is applied to, for example, the backpack-type power brush cutter mentioned above, the problems of the conventional example will be solved at once, and even when working on slopes, which has been a particular problem, the shoulder strap will be able to maintain its members. It does not fall off your shoulder, which results in improved work efficiency. In addition, in the present invention, both shoulder rests have a simple structure that only requires the addition of a connecting member that connects predetermined parts of the members, so the conventional shoulder rest does not have the specifications of the member or the backpack frame to which both ends of the member are connected. It also has the advantage of requiring almost no changes and is extremely cost-effective.

[Explanation of Examples]

Embodiments of the present invention will be specifically described below with reference to the drawings. In the drawings, the same reference numerals are given to the same members as in the conventional example shown in FIGS. 2 and 3. In the backpack carrying device of the present invention, the pair of left and right shoulder rests are located near the shoulders on the back side when the members are hung on both shoulders, and the shoulder rests are arranged to maintain a constant distance between the members near the shoulders. This example is characterized by the provision of a connecting member, but this example specifically shows the case where the present invention is applied to a backpack-type power brush cutter, and the configuration other than the main part of the present invention is the same as that of the second example. This is similar to the conventional example shown in FIGS. That is, as shown in FIG. 1, the shoulder straps provided on the left and right sides of the backpack frame l on which the prime mover 2 is mounted are connected to the backpack band 8.8 as a member, so that when the backpack frame l is carried on the back, the shoulder straps are attached to the back side. A connecting member 13 located near the waste (just below the butt 9.9 at the shoulder rest) prevents the distance between the bands at the shoulder rest of each backpack 8.8 from expanding beyond a predetermined distance. is configured to do so. The connecting member 13 consists of a first belt portion 15 having an adjustment buckle 14 at its tip, and a second belt portion 16 connected by passing the tip through the belt insertion hole 14a of the adjustment buckle 14, The second heald 16 is inserted into the belt insertion hole 1.
The length of the connecting member 13 can be freely adjusted depending on the degree of insertion into the connecting member 4a. Then, the male hooks 17.17 provided at the base end portions of the first belt portion 15 and the second belt portion 16 are connected to a portion immediately below the shoulder rest butt 9.9 of each of the backpack bands 8.8. The connecting member 13 can be easily attached to each shoulder strap 8.8 by fitting into the female hook 18.18 provided in the shoulder strap 8. Note that the female hooks 18.18 are attached to each shoulder strap 8.
By selecting which of the upper and lower female hooks 18.18 to attach the connecting member 13 to, the distance between the respective backpack bands 8.8 near the shoulders can be adjusted. Can be done. For example, by selecting the upper female hook 18.18, the above-mentioned interval can be reduced, and by selecting the lower female hook 18.18, the above-mentioned interval can be increased. Therefore, in combination with the fact that the length of the connecting member 13 itself can be adjusted by its adjustment buckle 14, the above-mentioned interval can be optimized according to the physique of each worker. Now, work using a backpack-type power brush cutter involves carrying the prime mover 2 on one's back using the backpack frame 1, operating the handle 7 with both hands, and moving the rotary work body 5 provided at the tip of the handle rod 4.
This is done in such a way as to guide the person to the destination. During this work, both shoulders move up and down frequently, and the body may lean significantly depending on the work situation.In this example, when carrying the above-mentioned backpack frame 1, Since the connecting member 13 restricts each backpack band 8 from being separated by more than the predetermined distance, the backpack straps 8, 8 will not fall off the shoulder. Although the connecting member 13 in the knapsack band is passed between the shoulders of the worker, it is only placed laterally on the back slightly below the nape of the worker's neck. Compared to using a chest band, there is no compression window at all, and you can continue working for a long time in a natural state without straining yourself. As described above, in the backpack-type power brush cutter of this example, the backpack straps 8.8 do not come off the shoulder during work, so unlike the conventional method, the straps 8, which have fallen off, need to be reattached. This eliminates the inconvenience of having to interrupt the process. Moreover, in this example, the length and attachment position of the connecting member 13 are adjusted to obtain a distance near the shoulders between the backpack bands 8.8 that suits the physique of the worker. The effects of the present invention can be further enhanced. Note that the scope of the present invention is not limited to the embodiments described above; for example, the connecting member may be simply composed of a single member; It is not a limitation that the shoulder strap is detachably connected to the band by means of hooks at both ends of the connecting member.

[Brief explanation of the drawing]

FIG. 1 is a back view of a person wearing the backpack frame of a backpack-type power brush cutter according to an embodiment of the present invention, FIG. 2 is a perspective view of a conventional backpack-type power brush cutter, and FIG. FIG. 3 is a front view of a person carrying the backpack-type power brush cutter shown in FIG. 2. 1... Carrying frame, 8... Shoulder strap member (back carrying band), 13... Connecting member. Figure 1

Claims (1)

[Claims] (1) A backpack frame for carrying an object on the back, and a pair of left and right shoulder straps whose respective ends are connected and fixed to the upper and lower parts of the backpack frame, and the pair of shoulder straps can be carried on both shoulders. A backpack carrying device for carrying the backpack frame on one's back by hanging the backpack frame on one's back, wherein each of the shoulder strap members has a predetermined interval between these parts located on the back side and near the shoulder when the backpack frame is carried on the back. A backpack carrying device, characterized in that both ends of a connecting member that is held at an interval of .