JP2012005407A - Mounting structure of backpack band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a backpack band in which a hook part and a backpack band do not easily enter the bottom of a body part of a working machine when the body part of the working machine of a backpack-type working machine is grounded.SOLUTION: The body part 1 of the working machine includes a pair of support parts 8 and 8 mutually facing at a fixed interval and a shaft part 9 for connecting the support parts 8 and 8. The hook part 12 that is caught by and engaged with the shaft part 9 and a closing body 13 that closes a space between end parts of the opening of the hook part 12 and forms a ring shape with the hook part 12 are arranged at the lower end of the backpack band 3. Further width of the closing body 13 is a size in which the hook part 12 does not enter the gap of a pair of the support parts 8 and 8 in a state in which the hook part is caught by and engaged with the shaft part 9 to restrict the rotation of the hook part 12 around the shaft part 9. Thus, the rotation of the hook part 12 engaged with the shaft part 9 downward is restricted and the hook part 12 and the backpack band 3 do not easily enter the bottom of the body part 1 of the working machine.

Description

  The present invention relates to a mounting structure for a back strap for an operator to carry a work machine main body of a back work type work machine.

  2. Description of the Related Art Conventionally, there has been known a backpack-type work machine in which a worker carries a work machine main body including a liquid pump and a liquid tank on the back (see, for example, Patent Document 1). A pair of backpack bands are attached to the work machine main body of such a backpack type work machine, and the operator carries the work machine main body with the backpack bands on both shoulders.

Japanese Patent No. 4286816

  By the way, as a general structure for attaching the back strap band to the work implement main body portion, there is a structure in which a hook portion of a so-called eggplant provided on the end portion of the back strap band is engaged with a shaft portion provided on the work implement main body portion. . However, in such a structure, when the work implement main body is grounded, the hook portion and the back strap may enter under the work implement main body, which makes the grounding of the work implement main body unstable. In addition, there is a possibility that the hook part may be damaged and the back strap may be soiled.

  The present invention has been made to solve such problems, and when grounding the work machine main body of the backpack type work machine, the hook or back band is difficult to enter under the work machine main body. The purpose is to provide a band mounting structure.

  The attachment structure of the back strap (3) according to the present invention is such that the lower end of the back strap (3) for the operator to carry the work implement main body (1) of the back work implement (100) is the work implement main assembly (1). ) In the attachment structure that is detachable on the lower side, the working machine main body part (the working machine main body part (1) is opposed to the work machine main body part (1) so as to face each other with a certain gap therebetween. A pair of support portions (8, 8) provided in 1), a shaft portion (9) connecting the pair of support portions (8, 8), and a lower end portion of the back strap (3); The hook part (12) hooked and engaged by (9) and the end part forming the opening of the hook part (12) are closed so as to be openable and closable, and the hook part (12) forms a ring shape. A closing body (13) with the hook portion (12) engaged with the shaft portion (9). And having a width which becomes impossible enters the gaps between the support portions of the pair (8,8).

  According to such a mounting structure of the back strap (3), the closing body (13) surrounding the shaft portion (9) with the hook portion (12) is formed in a ring shape between the pair of support portions (8, 8). Since it cannot enter the gap, the rotation of the hook portion (12) around the shaft portion (9) is limited. Thereby, it is possible to attach the hook portion (12) so that downward rotation is restricted, and to make it difficult for the hook portion (12) and the back strap (3) to enter under the work implement main body portion (1). It becomes.

  As described above, according to the present invention, it is possible to provide a mounting structure for a back strap that prevents the hook portion and the back strap from entering under the work implement main body when the work implement main body of the back work implement is grounded.

It is a front perspective view of a backpack type work machine to which the attachment structure of the backpack band of the present invention is applied. It is a perspective view which shows in detail before the attachment of the attachment structure of the backpack band which concerns on embodiment of this invention. It is a perspective view which shows the attachment after FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a backpack-type working machine according to the invention will be described with reference to the accompanying drawings. In the following description, the terms “up / down”, “front / rear”, and “left / right” represent directions with reference to the worker carrying the backpack-type work machine.

  FIG. 1 is a front perspective view of a backpack-type working machine to which the backband mounting structure of the present invention is applied, and FIG. 2 is a perspective view showing in detail before the backband mounting structure according to the embodiment of the present invention is mounted. FIG. 3 is a perspective view showing the state after the attachment of FIG. 2, and in the present embodiment, the backpack-type working machine will be described as a backpack-type power sprayer used for spraying medicines and the like.

  As shown in FIG. 1, a backpack type power sprayer 100 according to the present embodiment covers a work machine main body 1 including a power source and a front side (left side in FIG. 1) of the work machine main body 1, and a worker when carrying the back. A back support member 2 that comes into contact with the back of the machine, and a pair of back straps 3 and 3 for the operator to carry the work machine main body 1 on the back. The backpack type power sprayer 100 includes a spray hose that transmits a medicine or the like sent from the work machine main body 1 to the operator's hand, and a spray nozzle provided at an end of the spray hose. . Here, the spray hose and the spray nozzle are removed.

  The work machine main body 1 is mounted on a gantry 4 on which a pump or the like for spraying a drug (here, a drug solution) made of a liquid or powder and mounted on the gantry 4 and accommodates a drug to be sprayed. And a tank 5.

  The back support member 2 is formed of a material having excellent cushioning properties such as sponge, and is interposed between the gantry 4 and the tank 5 and the operator's back when carrying on the back, so as to ease mutual contact.

  The upper ends of the pair of backbands 3, 3 are detachably connected to a pair of upper band mounting portions 6, 6 provided symmetrically with the front upper end of the tank 5, respectively. Are respectively detachably connected to a pair of lower band attaching portions 7 and 7 provided symmetrically on the front lower end portion of the gantry 4. An operator can put his / her shoulders through a pair of loops formed by the pair of backpack bands 3 and 3 and the work implement main body 1 to carry the work implement main body 1 on the back.

  Here, the detail of the attachment structure of the lower end part of each backpack 3 is demonstrated with reference to FIG.2 and FIG.3.

  As shown in FIG. 2, the lower band mounting portion 7 includes a pair of support portions 8 and 8 and a shaft portion 9. Each of the support portions 8 and 8 is a plate-like body that extends in the front-rear direction and the up-down direction, and is formed so as to protrude forward from a position on the lower front side of the gantry 4, and is left-right with a certain gap therebetween. The gap is open forward, that is, toward the worker carrying the work implement main body 1 on the back. The shaft portion 9 is a cylindrical body having an axial center extending in the left-right direction, and is formed so as to connect the pair of support portions 8 and 8 together.

  On the other hand, the back strap 3 has a band portion 10 that hangs on the shoulder of the operator, and a nascar 11 is connected to the lower end portion of the band portion 10. The eggplant 11 is connected to the hook portion 12 that is hooked and engaged with the shaft portion 9 in the gap between the pair of support portions 8 and 8, and the base end portion 12 a of the hook portion 12. A closing body 13 that closes the opening formed between the distal end portion 12b and the base end portion 12a and forms an annular shape with the hook portion 12 is provided.

  The closing body 13 is a leaf spring body having an urging force directed from the inside to the outside of the ring shape with the base end portion 12 a of the hook portion 12 as a fulcrum, and the tip portion thereof is the above-described tip portion 12 b of the hook portion 12. It contacts from the inside of the ring shape.

  Further, a connecting hole 14 for connecting to the band portion 10 is formed in the base end portion 12 a of the hook portion 12. And the lower end part of the band part 10 is turned up to form a cylindrical part 15, and the common annular body 16 is inserted through the connecting hole 14 and the cylindrical part 15, so that the eggplant 11 and the band part 10 are connected. Has been.

  As described above, the eggplant 11 connected to the lower end portion of the band portion 10 opens the space between the distal end portion 12b and the proximal end portion 12a of the hook portion 12 by pushing the closing body 13 into the inside of the ring shape. The lower band attaching portion 7 is attached by passing the shaft portion 9. In the mounted state, as shown in FIG. 3, the hook portion 12 is hooked and engaged with the shaft portion 9, and the gap between the distal end portion 12 b and the base end portion 12 a of the hook portion 12 is blocked by the closing body 13. This prevents disengagement of the engagement. In this state, the width a in the left-right direction of the closing body 13 and the gap b between the pair of support portions 8 and 8 are in a relationship of a> b, and the closing body 13 is a pair of the support portions 8 and 8. It is impossible to enter the gap.

  According to the attachment structure of the lower end portion of the backpack band 3 configured as described above, the closure body 13 cannot enter the gap between the pair of support portions 8, 8. When the support portions 8 and 8 come into contact with each other, the hook portion 12 around the shaft portion 9 is prevented from rotating. Thereby, in the attached state shown in FIG. 3, the downward rotation of the hook portion 12 is restricted, and the hook portion 12 and the back strap 3 are less likely to enter the work implement main body portion 1.

  Thus, according to this embodiment, it is possible to attach the hook portion 12 so that the downward rotation is restricted, and to make it difficult for the hook portion 12 and the back strap 3 to enter under the work machine main body portion 1. It becomes.

  Further, since the hook portion 12 is engaged with the shaft portion 9 between the pair of support portions 8 and 8, the pair of support portions 8 and 8 restricts the tilting of the hook portion 12 in the left-right direction, so The position of the band 3 is stable and the work implement main body 1 is easily carried on the back.

  In the present embodiment, the support portions 8 and 8 have been described as plate-shaped bodies. However, the form of the support portions 8 and 8 is not limited to this, and the support portions 8 and 8 face each other with a certain gap therebetween. Any other form may be used as long as it opens to the side of the worker who carries the main body 1 on the back. For example, the recessed part which dents from the front side of the mount frame 4 to the back side is formed, and the form which uses a pair of side surfaces which form the said recessed part as the support parts 8 and 8 may be sufficient.

  Further, in the present embodiment, the backpack-type working machine has been described as the backpack-type power sprayer 100, but the present invention is not limited to this, and can be applied to, for example, a backpack-type blower.

  DESCRIPTION OF SYMBOLS 4 ... Mount, 8 ... Support part, 9 ... Shaft part, 12 ... Hook part, 13 ... Closure body.

Claims (1)

In a mounting structure in which a lower end portion of a back strap (3) for carrying a work machine main body (1) of a backpack type work machine (100) by a worker on its back is detachable to a lower side of the work machine main body (1). ,
A pair of support portions (8) provided on the work implement main body (1) so as to be opposed to each other with a certain gap and the constant gap is open to the worker side carrying the work implement main body (1). , 8) and
A shaft portion (9) connecting the pair of support portions (8, 8);
A hook portion (12) provided at a lower end portion of the back strap (3) and hooked and engaged with the shaft portion (9);
An end that forms an opening of the hook portion (12) is closed so as to be openable and closable, and includes a closing body (13) that forms an annular shape with the hook portion (12),
The closing body (13) has a width that prevents entry into the gap between the pair of support portions (8, 8) in a state where the hook portion (12) is engaged with the shaft portion (9). A mounting structure of the characteristic back strap (3).

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