JP6392186B2 - Back strap mounting structure - Google Patents

Description

  The present invention relates to a backpack type work machine, and more particularly to a mounting structure for a backpack band.

  For example, in a backpack-type working machine such as a backpack-type power sprayer, a pair of left and right back straps for carrying a work machine main body equipped with a tank, a power source, etc. are provided, and the upper end of each backpack band Lower end portions are respectively attached to the upper and lower portions of the work implement main body. Patent Document 1 below details a structure in which the lower end of the back strap is attached to the lower part of the work implement main body.

  In this mounting structure, a hook portion of a so-called NASKAN metal fitting connected to the end portion of the backpack band is locked to a locking portion provided on the work machine main body and projecting outward.

JP 2014-30404 A

  However, in the mounting structure described above, there is a problem that the comfort of carrying the back is inferior because the Naskan fitting comes into contact with the side of the worker's flank. Also, if the mounting position of the NASCAN metal fitting is set to a position that is larger than the width of the operator's body so that the NASCAN metal fitting does not come into contact with the worker, the back strap will not easily fit the operator's body. Also in this case, there is a problem that it is uncomfortable to carry.

  The present invention has been made to solve such problems, and it is an object of the present invention to provide a mounting structure for a backpack band that can improve the comfort of the backpack and can easily mount the backpack band. To do.

The attachment structure of the backpack band according to the present invention is the attachment structure of the backband (9) for attaching the band end portion (9e) of the backpack band (9) to the work machine main body (11) of the backpack type work machine (1). The band end portion (9e) of the back strap (9) includes a cylindrical portion (9c) and a rod-shaped member (9d) inserted into the cylindrical portion (9c), and includes a work implement main body portion (11). ) Is connected to the small window (6w) and the small window (6w), which allows the band end (9e) with the rod-shaped member (9d) to be inserted, and the band end ( A slit having a width that allows the band-shaped band portion (9a) following 9e) to be inserted while the band end portion (9e) with the rod-shaped member (9d) mounted thereon cannot be inserted ( and 6t), the provided, at a position away before the small window (6w) of the slit (6t) Band end which enters the inside inserted through the small window (6w) (9e) is the band end to prevent further movement of the band end in a state that has moved before the small window (6w) (9e) It has a band end locking slit (6y) for locking (9e).

  According to such an attachment structure of the backside band, the band end (9e) in a state where the rod-like member (9d) is inserted and attached to the cylindrical part (9c) is the small window of the work implement main body (11). (6w) and the band-shaped band part (9a) following the band end part (9e) is inserted into the inside through the slit (6t) of the work machine main body part (11). When the band end (9e) that has entered the inside through the small window (6w) is pulled and moved away from the small window (6w), the band end (9e) It strikes the band end locking slit (6y) at a position away from the small window (6w), and further movement is prevented and locked. That is, the band end (9e) of the back strap (9) can be easily attached to the work implement main body (11). Further, according to the attachment structure of the back strap, the band end (9e) with the rod-like member (9d) attached enters the work implement main body (11), and the band (9a) is the work implement main body. Because of the configuration that is arranged outside the part (11), the band part (9a) that is not the NASCAN metal fitting can be protruded outside the work machine body part (11) at a position that is substantially the same as the width of the operator's body. The band portion (9a) can be brought into contact with the operator's body so that the comfort on the back can be improved.

  Here, the slit (6t) has a portion (6s) extending so as to be orthogonal to the small window (6w), and the axial direction of the rod-shaped member (9d) of the band end (9e) is If the band end (9e) can be inserted into the small window (6w) in a state along the extending direction of the slit (6s), the band end (9e) with respect to the small window (6w). ) Can be easily inserted.

  In addition, the band end (9e) in a state of being inserted through the small window (6w) between the small window (6w) and the band end locking slit (6y) can get over. It is preferable to have a peak (6 m) to prevent the return. When such a configuration is adopted, when the band end portion (9e) gets over the peak portion (6m), the trough portion (6m) between the peak portion (6m) and the band end portion locking slit (6y) ( 6n), it is prevented from returning by the peak (6m), and is thus preferably locked.

  Here, as a configuration that preferably exhibits the above-described operation, specifically, the small window (6w) has an inclined surface (6p) that is farther from the band-end locking slit (6y) at the peak (6m). A configuration in which the slit (6z) provided on the side and connecting the small window (6w) and the band end locking slit (6y) is provided at least in the peak (6m) can be mentioned.

  Thus, according to the present invention, it is possible to provide a mounting structure for a backpack band that can improve the comfort of the backpack and can easily mount the backpack band.

It is a back perspective view showing the backpack type work machine to which the attachment structure of the backpack band of the present invention was applied. It is a front perspective view of the backpack type working machine shown in FIG. It is a back perspective view which shows the mount frame in FIG.1 and FIG.2, and is a figure which shows the state by which one back negative band was latched. FIG. 4 is a rear view of the gantry shown in FIG. 3. It is an enlarged view which shows the small window on the left side in FIG. FIG. 5 is a front perspective view of the gantry shown in FIGS. 3 and 4. It is a figure which shows the attachment procedure of a backpack band, and is a front perspective view which shows a mode that the band edge part of a backpack band is set with respect to the small window of a mount frame. It is a figure which shows the procedure following FIG. 7, and the band edge part of a backpack band penetrates the small window in FIG. 5, and the band part following a band edge part penetrates the slit of a peak part, and the slit for band edge part latching. It is a figure which shows the state which carried out. It is the figure which looked at the state shown in FIG. 8 in the position which follows the DD line | wire of FIG. It is a figure which shows the attachment procedure following FIG. 9, and is a figure which shows the state which the band edge part got on the mountain part. It is a figure which shows the attachment procedure following FIG. 10, and is a figure which shows the state which the band edge part got over the peak part, was dropped into the trough part, and was latched between the peak part and the band edge part slit. is there.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a mounting structure for a backpack according to the invention will be described with reference to the accompanying drawings. In the following description, words representing directions such as up and down, front and rear, and left and right define the front as “front” for the worker on the basis of a state where the worker stands upright with a backpack-type work machine on the back.

  FIG. 1 is a rear perspective view showing a backpack-type working machine to which the attachment structure of the backpack band of the present invention is applied, and FIG. 2 is a front perspective view of the backpack-type working machine. The backpack-type working machine is here a backpack-type power sprayer, and is used by an operator to spray a medicine while carrying the sprayer body (working machine body).

  As shown in FIG.1 and FIG.2, the sprayer main-body part 11 of the backpack type power sprayer 1 is roughly provided with the chemical | medical agent tank 2, the mount frame 6, the engine 3, the fuel tank 5, and the pump 4 grade | etc.,.

  The medicine tank 2 constitutes the upper part of the sprayer main body 11 and stores medicine (medicine solution). The gantry 6 constitutes the lower part of the sprayer main body 11, and the drug tank 2 and the gantry 6 can be rotated by a shaft portion 6 x (see FIGS. 3 and 4) provided on the upper part of the gantry 6. The drug tank 2 is connected to be a so-called swing tank that can be tilted forward.

  On the gantry 6, the engine 3, the fuel tank 5, the pump 4, and the like are mounted. The engine 3 is driven by the fuel stored in the fuel tank 5 to drive the pump 4. By driving the pump 4, the medicine in the medicine tank 2 is sent to the downstream side.

  The backpack type power sprayer 1 further includes a spray hose for transmitting the medicine sent out from the medicine tank 2 to the hand of the operator, and a spray hose provided at the end of the spray hose for spraying the medicine from the spray hose. A spray nozzle. Further, on the front surface of the sprayer main body 11, a back support member that is in contact with the back of the operator and has cushioning properties is attached. In the drawing, the spray hose, the spray nozzle and the backing member are removed.

  The backpack type power sprayer 1 includes a pair of left and right backpack bands 9 and 9 attached to the sprayer body 11. Each of the back negative bands 9 and 9 has a long band-like (substantially flat plate-like) band portion 9a. Cushion portions 9b and 9b are fixed to the upper and lower portions of the band portion 9a along the longitudinal direction. The cushion portion 9b is configured to be bendable, and here, for example, polyurethane foam or the like is formed as a main material. The cushion portion 9b is provided so as to overlap the band portion 9a, and abuts against the operator when carrying the back and imparts cushioning properties.

  The upper end portions of the band portions 9a, 9a of the back straps 9, 9 are detachably locked to a pair of upper band attaching portions 13, 13 provided symmetrically on the upper front side of the medicine tank 2. .

  The lower ends of the band portions 9 a and 9 a of the back straps 9 and 9 are locked to the lower portion of the gantry 6. 7 and 8, the lower end portion of the band portion 9a is folded back and connected to the original portion by stitching, thereby forming a cylindrical portion 9c. The cylindrical portion 9c has a rod-like shape. By inserting (inserting) the member 9d, a band end 9e is formed, and the band end 9e is locked to the lower portion of the gantry 6 (details will be described later).

  Hereinafter, an attachment structure for attaching the lower end portion of the back strap band 9 to the gantry 6 constituting the sprayer main body 11 will be described in detail. 3 is a rear perspective view showing the gantry, and shows a state in which one back strap band is locked, FIG. 4 is a rear view of the gantry shown in FIG. 3, and FIG. 5 is a left side view in FIG. FIG. 6 is a front perspective view of the gantry shown in FIGS. 3 and 4. In FIG. 6 and subsequent FIG. 7, the cushion portion 9 b is omitted in order to avoid complication of the drawing.

  As described above, the gantry 6 constitutes the lower part of the sprayer main body 11, supports the drug tank 2 so as to be rotatable by the shaft 6 x, and supports the driving units such as the engine 3, the fuel tank 5, and the pump 4. It is to be installed. As shown in FIGS. 3, 4, and 6, the gantry 6 includes a substantially rectangular base portion 6 a that serves as a bottom wall portion, and a front wall portion 6 b that stands upright at the front end of the base portion 6 a and extends upward. And comprising. Specifically, as shown in FIGS. 3 and 6, the front wall portion 6b extends a predetermined length upward from the base portion 6a at a right angle, and then the upper portion is slightly inclined backward (inclined backward: toward the front side of the drawing in FIG. Tilted).

  The base portion 6a serves to fix the drive unit, and functions as a pedestal when the sprayer body 11 is placed on the ground. A pair of left and right stays 7 and 7 are fixed between the base portion 6a and the upper end of the front wall portion 6b as shown in FIGS. The stay 7 has an inverted L shape and is attached to the left and right sides of the gantry 6. On this stay 7, the medicine tank 2 is placed.

  As shown in FIGS. 3 and 4, on the inner surface of the front wall portion 6b, the position corresponding to the entry position of the lower end portion of the backpack band 8, that is, the inner surface on the left and right sides of the front wall portion 6b, as it goes upward. Inclined walls 6f, 6f that are inclined backward (inclined toward the front of FIG. 4) are provided. The pair of left and right inclined walls 6f, 6f are formed in a C shape in a rear view (viewed from the front side in FIG. 4). Moreover, the connection wall 6g which connects the inclined wall 6f and the front wall part 6b is provided. The connecting wall 6g is configured to incline upward from the inclined wall 6f toward the front wall 6b. The pair of left and right connecting walls 6g, 6g have an inverted C shape when viewed from the back (viewed from the front side in FIG. 4).

  On the other hand, in the base portion 6a, an opening 6d is formed at a position rearward of the inclined wall 6f (a further front side in FIG. 4), as shown in FIG. A peak portion 6m is provided to project. As shown in FIGS. 3 and 4, the mountain portion 6 m is provided along the inclined wall 6 f at a certain distance from the inclined wall 6 f. Therefore, the pair of left and right ridges 6m, 6m also have a square shape in the rear view (viewed from the front side in FIG. 4).

  As shown in FIGS. 3 to 6, a substantially rectangular small window 6 w that communicates between the inside and the outside is opened in the base portion 6 a. The small window 6w is sized to allow insertion of the band end 9e with the rod-shaped member 9d attached thereto. This small window 6w is applied to an inclined surface (an inclined surface on the near side in FIG. 4) 6p far from the inclined wall 6f in the mountain portion 6m, and further extends rearward (on the near side in FIG. 4) from the mountain portion 6m. It is provided as follows.

  Then, as shown in FIG. 6, the slit 6t is continuously cut from the lower side to the upper side from the small windows 6w, 6w of the base portion 6a to the middle height position of the front wall portion 6b. Provided. The slit 6t is a slit that penetrates through the base portion 6a and the front wall portion 6b and further cuts out the inner inclined wall 6f in a long hole shape from the bottom to the top. While it has a width that allows the portion 9a to be inserted, it has a width that prevents the band end portion 9e from being inserted.

  Therefore, among the slits 6t, as shown in FIG. 3 and FIG. 4, the slits that penetrate the inclined wall 6f prevent the band end 9e located in the mount 6 from moving further toward the front wall 6b. The band end locking slit 6y for locking the band end 9e. The slit 6t has a connecting slit 6z that connects the small window 6w and the band end locking slit 6y and crosses at least the peak 6m. As shown in FIG. 6, the slit 6t has a vertical slit 6s that is connected to the connecting slit 6z and extends upward at a right angle from the lower end of the front wall 6b.

  And in the attachment structure of the back strap 9 of this embodiment, as shown in FIG.3, FIG4 and FIG.6, the band edge part 9e by which the rod-shaped member 9d was penetrated by the cylindrical part 9c approached into the mount frame 6 Then, the band end 9a is brought into contact with the band end locking slit 6y to prevent further movement toward the front wall 6b, and the band 9a is connected to the band end locking slit 6y. And the vertical slit 6s is inserted and it is in the state arrange | positioned out of the mount frame 6. That is, the lower end portion of the back strap 9 is attached to the lower portion of the gantry 6.

  A procedure for attaching the band end portion 9e of the back strap 9 to the gantry 6 will be described with reference to FIGS. FIG. 7 is a view showing a procedure for attaching the back band, and is a front perspective view showing a state in which the band end portion of the back band is set on the small window of the gantry. FIG. 8 is a view showing the procedure following FIG. FIG. 9 is a view showing a state in which the band end portion of the backside band is inserted into the small window in FIG. 5 and the band portion following the band end portion is inserted through the slit at the peak portion and the slit for locking the band end portion. FIG. 10 is a view of the state shown in FIG. 8 at a position along the line DD in FIG. 4, and FIG. 10 is a view showing the attachment procedure following FIG. FIG. 11 and FIG. 11 are views showing the attachment procedure following FIG. 10, where the band end crosses the peak and is dropped into the valley and is locked between the peak and the band end locking slit. It is a figure which shows the state made.

  First, as shown in FIG. 7, the band end 9e is located below the small window 6w in a state where the axial direction of the rod-shaped member 9d of the band end 9e is along the extending direction of the vertical slit 6s. Set as follows. At this time, of course, the band portion 9a is set so as to be positioned below the vertical slit 6s.

  Next, as shown in FIGS. 8 and 9, the band end portion 9e is inserted through the small window 6w, and the band portion 9a is connected to the connecting slit 6z across the peak portion 6m and the band end portion is locked. It is inserted through the slit 6y.

  Next, as shown in FIG. 10, the band portion 9 a is pulled and moved forward (left side in FIG. 10), which is a direction away from the small window 6 w. Then, the band end portion 9e rides on the inclined surface 6p of the mountain portion 6m.

  When pulled further, as shown in FIG. 11, the band end 9e gets over the peak 6m and falls into the valley 6n, and is sandwiched between the peak 6m and the band end locking slit 6y. It is. That is, the band end portion 9e is prevented from moving further toward the front wall portion 6b by the band end portion locking slit 6y, and is prevented from coming out to the small window 6w side by the peak portion 6m. .

  Thus, in this embodiment, the gantry 6 constituting the sprayer main body 11 is connected to the small window 6w that allows the band end portion 9e of the backband 9 to be inserted, and the small window 6w. A slit 6t having a width that allows the band portion 9a to be inserted while the band end portion 9e cannot be inserted. The slit 6t has a small width at a position away from the small window 6w. A band end for preventing the band end 9e from further movement and locking the band end 9e in a state where the band end 9e that has passed through the window 6w and entered the inside moves in a direction away from the small window 6w. Since the portion locking slit 6y is provided, the band end 9e is inserted through the small window 6w of the gantry 6 and the band portion 9a is inserted through the slit 6t of the gantry 6. In state, small When the band end portion 9e that has passed through 6w and enters the inside is pulled and moved in a direction away from the small window 6w, the band end portion 9e is engaged with the band end portion at a position away from the small window 6w in the slit 6t. It strikes against the stop slit 6y, and further movement is prevented and locked. Therefore, the band end 9e of the back strap 9 can be easily attached to the gantry 6. In addition, according to the attachment structure of the back strap, the band end 9e enters the frame 6 and the band 9a is disposed outside the frame 6. It can be made to project out of the gantry 6 at a position substantially the same as the width of the body, the band portion 9a can be brought into contact with the body of the operator, and the back comfort can be improved.

  Further, in the present embodiment, the slit 6t has a vertical slit 6s extending so as to be orthogonal to the small window 6w, and the axial direction of the rod-shaped member 9d of the band end portion 9e is the vertical slit 6s. Since the band end portion 9e is inserted into the small window 6w in a state along the extending direction, the band end portion 9e can be easily inserted into the small window 6w.

  Further, the band end portion 9e in the state of entering the inside through the small window 6w between the small window 6w and the band end locking slit 6y can get over and prevent the band end portion 9e from returning. Since it has the peak 6m, when the band end 9e gets over the peak 6m, it falls into the valley 6n between the peak 6m and the band end locking slit 6y, and the peak 6m As a result of being prevented from returning (preventing slipping off), it can be suitably locked.

  As described above, the present invention has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment. For example, in the above embodiment, the drug tank 2 is attached to the gantry 6 as being particularly preferable. On the other hand, the application to the swing tank that can be tilted forward is described, but the medicine tank 2 can be applied to a tank that is fixed to the gantry 6 and does not tilt forward.

  Moreover, in the said embodiment, although application with respect to the backpack type power sprayer for spraying a chemical | medical agent (chemical | medical solution) is described, For example, it is applicable to backpack type power working machines, such as a backpack type power spreader. In addition, the present invention can also be applied to a working machine such as a back-loading manual sprayer or a spreader. In short, it can be applied to a back-working work machine having a back-loading band.

  DESCRIPTION OF SYMBOLS 1 ... Back type power sprayer (back type working machine), 6 ... Mount, 6m ... Mountain part, 6n ... Valley part, 6p ... Inclined surface, 6s ... Vertical slit, 6t ... Slit, 6w ... Small window, 6y ... Band End locking slit, 6z ... Communication slit, 9 ... Back strap, 9a ... Band part, 9c ... Cylindrical part, 9d ... Bar-like member, 9e ... Band end part, 11 ... Sprayer main part (worker main part) ).

Claims (4)

A mounting structure of a back strap (9) for attaching a band end (9e) of a back strap (9) to a work implement main body (11) of the back strap type work machine (1),
The band end portion (9e) of the back strap (9) includes a cylindrical portion (9c) and a rod-shaped member (9d) inserted into the cylindrical portion (9c),
The work machine main body (11)
A small window (6w) that allows insertion of the band end (9e) with the rod-shaped member (9d) attached thereto;
The rod-shaped member (9d) has a width that allows insertion of a band-shaped band portion (9a) that is continuous with the small window (6w) and continues to the band end portion (9e) of the backpack band (9). A slit (6t) having a width that makes it impossible to insert the band end (9e) in a state of wearing
The back strap (9) side of the work implement main body (11) is a front side,
At a distance in front than said small window (6w) of said slit (6t), the more small window (6w) inserted through the band end enters the inside (9e) said small window (6w) And a band end locking slit (6y) for preventing further movement of the band end (9e) and locking the band end (9e) in the state of being moved forward. The attachment structure of the back strap (9). The slit (6t) has a portion (6s) extending so as to be orthogonal to the small window (6w),
In the state where the axial center direction of the rod-shaped member (9d) of the band end portion (9e) is along the extending direction of the portion (6s) where the slit extends, the band end portion (9e) is small. The mounting structure for a back band (9) according to claim 1, characterized in that it can be inserted into the window (6w).   Between the small window (6w) and the band end locking slit (6y), the band end (9e) in a state of passing through the small window (6w) and entering the inside may get over. 3. The attachment structure for a back band (9) according to claim 1 or 2, characterized in that it has a peak (6m) that is possible and prevents it from returning. The small window (6w) is provided on the inclined surface (6p) side farther from the band end locking slit (6y) at the peak (6m),
The backpack according to claim 3, wherein a slit (6z) connecting the small window (6w) and the slit for locking the band end portion (6y) is provided at least in the peak portion (6m). Band (9) mounting structure.

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