WO2015087806A1

WO2015087806A1 - Backpack type power sprayer

Info

Publication number: WO2015087806A1
Application number: PCT/JP2014/082275
Authority: WO
Inventors: 内海　誠; 正行米山; タナワン、タビーワット
Original assignee: 本田技研工業株式会社
Priority date: 2013-12-11
Filing date: 2014-12-05
Publication date: 2015-06-18
Also published as: MX2016007607A; BR112016002375A2; PE20160421A1; JP5813079B2; BR112016002375B1; CN105121028A; CN105121028B; JP2015112535A

Abstract

A throttle lever (82) for an engine (16) of a backpack type power sprayer (10) is positioned below a liquid tank (11). The lower surface of the throttle lever is protected by a lever guard (85) disposed below the throttle lever. The throttle lever is disposed to the inside in the direction of width of the liquid tank with respect to a line (La) passing through a side end (11c) protruding the most to the side on a side surface (11b) in the direction of width of the liquid tank and a side end (85b) of the lever guard.

Description

Shoulder type power sprayer

The present invention relates to a technology for protecting an engine throttle lever of a shoulder-type power sprayer.

The load type power sprayer has a structure in which a liquid tank, a pump for discharging the liquid in the liquid tank to a diffusion pipe, and an engine for driving the pump are integrally assembled. The operator can spray the liquid in the liquid tank by means of the spray pipe while carrying the backpack type power sprayer. Such a shoulder-type power sprayer is known from U.S. Pat.

BACKGROUND ART A load-type power sprayer known in Patent Document 1 includes a throttle valve for adjusting the output of an engine. A throttle lever for operating the throttle valve is disposed below the liquid tank. The top of the throttle lever is covered by a cover. The cover can prevent the liquid flowing down along the surface of the liquid tank from dripping onto the throttle lever.

However, the lower part of the throttle lever is exposed. Therefore, when the load type power sprayer is placed on the ground, the throttle lever can hit a protrusion (foreign matter) on the ground. Also, when the load type power sprayer placed on the ground falls over, the throttle lever hits the ground. With respect to such a phenomenon, consideration is required to protect the throttle lever. However, simply adding the configuration for protecting the throttle lever complicates the configuration for protecting the throttle lever.

Japanese Patent Application Laid-Open No. 2002-059043

An object of the present invention is to provide a technology capable of protecting a throttle lever with a simple configuration.

According to the invention of claim 1, the liquid tank, the pump for discharging the liquid in the liquid tank to the dispersion pipe, and the engine for driving the pump are integrally assembled, and the worker carries the back In a backpack type power sprayer capable of performing a spraying operation, a throttle lever located below the liquid tank and operating a throttle valve for the engine, and a position below the throttle lever. A lever guard for protecting the lower surface of the throttle lever, and a straight line passing between the most laterally projecting side end of the side surface in the width direction of the liquid tank and the side end of the lever guard, The present invention provides a shoulder-type power sprayer characterized in that the throttle lever is disposed on the inner side in the width direction of the liquid tank.

As described in claim 2, preferably, the apparatus further comprises a frame provided with the liquid tank, and a back strap belt for the operator to carry the frame, the one end portion of the back strap belt being one end A belt attachment for attaching the part in the frame in the vicinity of the throttle lever, at least one of the lever guard and the frame preventing contact of the belt attachment with the throttle lever A stopper is provided to

In the first aspect of the present invention, the lower surface of the throttle lever located below the liquid tank is protected by a lever guard disposed below the throttle lever. For this reason, the lever guard protects the throttle lever so that it does not hit a protrusion (foreign object) on the ground when the backpack type power sprayer is placed on the ground in a so-called mounting posture.

Further, the throttle lever is disposed on the inner side in the width direction of the liquid tank with respect to a straight line passing the side end of the liquid tank in the width direction and the side end of the side of the lever guard. There is. Therefore, the throttle lever does not hit the ground when the backpack-type power sprayer placed on the ground is turned over (when it is in the overturned posture).

In this way, the load on the power sprayer with the back of a shoulder type can be set simply by setting the size of the lever guard arranged below the throttle lever and the size of the side end of the liquid tank to the optimum size. The throttle lever can be sufficiently protected against both the resting position and the overturned position.

In the invention according to claim 2, the belt attachment is provided at one end of the shoulder belt. The belt mount is mounted in the frame near the throttle lever. At least one of the lever guard and the frame is provided with a stop for preventing contact of the belt attachment with the throttle lever. Therefore, when the throttle lever is operated, it is possible to prevent the belt from being caught by the throttle lever.

It is a perspective view of a shoulder type power sprayer concerning Example 1 of the present invention. FIG. 2 is a side view of the lower half of the power sprayer illustrated in FIG. 1; It is a front view of the shoulder type power sprayer shown by FIG. It is a perspective view of the structure which attached the shoulder strap shown by FIG. 1 to the flame | frame. It is a perspective view explaining the relationship between the back strap attachment part shown by FIG. 1, a throttle lever, and a control box. It is explanatory drawing explaining the state which the worker carried on the back-loading type power sprayer shown by FIG. It is explanatory drawing explaining the state which put the shoulder type power sprayer shown by FIG. 1 on the ground. It is an explanatory view explaining the state where the shoulder type power sprayer shown in Drawing 1 was turned over to the ground. It is a perspective view around a stopper of a shoulder type power sprayer concerning Example 2 of the present invention.

A mode for carrying out the present invention will be described below based on the attached drawings. The terms “front”, “rear”, “left”, “right”, “upper” and “lower” follow the direction seen from the operator carrying the power sprayer.

A shoulder type power sprayer according to a first embodiment will be described. As shown in FIG. 1 and FIG. 2, the backrest type power sprayer 10 includes a liquid tank 11, a pump 15 for discharging the liquid in the liquid tank 11 to the dispersion pipe 13, and an engine for driving the pump 15. The work machine 16 is integrally assembled, and it is a working machine that can be carried by the worker on the back and can be sprayed. Hereinafter, the shoulder type power sprayer 10 will be abbreviated as “power sprayer 10”.

Specifically, the discharge port 15 a of the pump 15 is connected to the distribution pipe 13 by a hose 12. An extension pipe 14 is attached to the tip of the dispersion pipe 13. The liquid tank 11, the pump 15, and the engine 16 are assembled in a frame 17 having a substantially L-shape in a side view. The frame 17 is also referred to as a shoulder frame, and a substantially vertical plate-like spine 21 on the front side to be shouldered by a worker, and a substantially flat horizontal plate 22 extending rearward from the lower end of the spine 21. It consists of

The liquid tank 11 has a front surface 11 a attached to the back of the shoulder 21 and a lower surface attached to the upper surface 22 a of the lateral plate 22 by a stay 23. The pump 15 is located below the liquid tank 11 and closer to the spine 21, that is, on the side (front side) to be carried by the operator. The engine 16 is located behind the liquid tank 11 and behind the pump 15. The pump 15 and the engine 16 are attached to the upper surface 22 a of the side plate portion 22.

As shown in FIG. 1 and FIG. 3, the power sprayer 10 has left and

right shoulder belts

18, 18 for the operator to carry the frame 17 provided with the liquid tank 11. That is, the worker can carry the power sprayer 10 by the left and

right shoulder belts

18, 18. One

end portions

18a, 18a (

lower end portions

18a, 18a) of the left and

right shoulder straps

18, 18 are attached to the front lower portion of the frame 17. The

other end portions

18b and 18b (

upper end portions

18b and 18b) of the left and

right shoulder straps

18, 18 are attached to the upper portion of the front surface 11a of the liquid tank 11, that is, the surface 11a supported by the operator.

Specifically, as shown in FIGS. 2 to 4, the frame 17 extends leftward and rightward from the front lower portion of the left and right sides as viewed from the side (front side) to be carried by the operator. The hooking

portions

71, 71 are provided. The positions of the left and right hooking

portions

71, 71 are set, for example, on the side surfaces of the corners of the lower end of the shoulder portion 21 and the front end of the horizontal plate portion 22. The left and right hooking

portions

71, 71 are flat inclined plates whose plate surfaces are inclined rearward and downward, and have left and right through

holes

71a, 71a penetrating in the thickness direction.

As shown in FIG. 3 and FIG. 4, left and right belt attachments 72, 72 (left and right hooks 72, 72) are provided at one

end portions

18 a, 18 a of the left and

right shoulder straps

18, 18. The left and

right belt fasteners

72, 72 are detachably hooked to the left and right through

holes

71a, 71a in the frame 17.

As shown in FIG. 2, the power sprayer 10 includes a throttle valve 81 for adjusting the output of the engine 16, a throttle lever 82 for manually operating the throttle valve 81, and the engine 16. A main switch 83 (power switch 83) and a control box 84 are provided. The throttle valve 81 is located on the side of the engine 16. The throttle lever 82 and the main switch 83 are incorporated in the control box 84. The control box 84 incorporates a control unit (not shown) for controlling the engine 16.

As shown in FIGS. 2 and 5, the control box 84 is located directly behind one of the left and right hooking portions 71 and 71 (for example, the left) and below the liquid tank 11 and attached to the frame 17. ing. As shown in FIG. 6, the worker Mn often holds the spray pipe 13 by the dominant hand when carrying the power sprayer 10 and carrying out the spraying operation by the spray pipe 13 (see FIG. 1). This is because it is more efficient. Therefore, it is more preferable to dispose the throttle lever 82 on the opposite side of the operator Mn. In the example shown in FIG. 6, the operator Mn holds the distribution pipe 13 by the right hand since the dominant hand is the right hand, and operates the throttle lever 82 by the left hand Ha not holding the distribution pipe 13.

As shown in FIGS. 2 and 5, the throttle lever 82 is located laterally outside the front side of the control box 84 and is mounted to the control box 84 so as to be able to swing up and down. The throttle lever 82 extends forward to the vicinity of the hooking portion 71 when in a substantially horizontal state. For this reason, as shown in FIG. 6, when the worker Mn carries the power sprayer 10 on his / her back and performs the spreading operation with the spreading pipe 13 (see FIG. 1), the hand Ha who does not hold the spreading pipe 13 By operating the throttle lever 82, the throttle valve 81 can be easily adjusted.

As shown in FIGS. 2 and 5, the main switch 83 is configured by a rotary switch. The knob 83 a of the main switch 83 is adjacent to the rear upper side with respect to the swing base 82 a of the throttle lever 82. That is, the knob 83 a is positioned more outward in the width direction than the rear side portion of the control box 84.

Thus, the throttle lever 82 and the knob 83 a of the main switch 83 are located below the liquid tank 11 together with the control box 84.

Further, as shown in FIGS. 4 and 5, the control box 84 has a lever guard 85 and a stopper 86. The lever guard 85 and the stopper 86 are formed integrally or separately from the control box 84.

The lever guard 85 is a substantially flat horizontal plate extending outward from the lower end of the control box 84 in the width direction. The “width direction” is the frame width direction, that is, the left-right direction when the frame 17 is viewed from the side (front side) to be carried by the worker, as shown in FIG. The front end 85 a of the lever guard 85 is adjacent to the rear surface 71 b of the hooking portion 71. The lever guard 85 protects the lower surface of the throttle lever 82 and the lower surface of the main switch 83 by being located below the throttle lever 82 and the main switch 83.

As shown in FIG. 3, the side end 11c of the liquid tank 11 in the width direction of the liquid tank 11 (the side 11b when viewed from the front face 11a), and the side end 85b of the lever guard 85 and the side end 85b. The straight line La that passes through is referred to as a circumscribed line La. The throttle lever 82 is disposed on the inner side in the width direction of the liquid tank 11 with respect to the external tangent La.

As described above, the belt attachment 72 provided at one end 18 a of the left or right shoulder belt 18 is attached to the frame 17 at a position near the throttle lever 82.

As shown in FIGS. 4 and 5, the stopper 86 is a member for preventing the belt attachment 72 from contacting the throttle lever 82, and is provided on the lever guard 85. More specifically, the stopper 86 is a vertical plate-like member extending upward at the front end of the proximal end portion of the lever guard 85 with respect to the control box 84, and the hooking portion 71 from the front end 84 a of the control box 84. Extends to the rear surface 71b of the That is, the stopper 86 is integrally formed with the lever guard 85 in the control box 84. The front end surface 86 a of the stopper 86 is located at the widthwise outer end of the hooking portion 71 and is inclined along the rear surface 71 b of the hooking portion 71.

As described above, the lever guard 85 is provided with the stopper 86 for preventing the belt attachment 72 from contacting the throttle lever 82. Therefore, when the throttle lever 82 is operated, it is possible to prevent the belt 18 from being caught by the throttle lever 82.

The above description is summarized as follows. As shown in FIG. 2, the lower surface of the throttle lever 82 located below the fluid tank 11 is protected by a lever guard 85 located below the throttle lever 82. For this reason, as shown in FIG. 7, when the power sprayer 10 is placed on the ground Gr in a so-called mounting posture, the throttle lever 82 does not hit the projection Su (foreign substance Su) on the ground Gr. It is protected by the lever guard 85.

Furthermore, as shown in FIG. 3, a straight line La (an external tangent line La passing through the side end 11 c of the side surface 11 b in the width direction of the liquid tank 11 and the side end 85 b of the lever guard 85). ), The throttle lever 82 is disposed inside the fluid tank 11 in the width direction. For this reason, as shown in FIG. 8, when the power sprayer 10 placed on the ground Gr is turned over (when it is turned over), the throttle lever 82 does not hit the ground Gr.

As described above, the power sprayer has a simple configuration in which the size of the lever guard 85 disposed below the throttle lever 82 and the size of the side end 11c of the liquid tank 11 are set to optimum sizes. The throttle lever 82 can be sufficiently protected against both the mounting posture and the overturning posture.

A description will be given, based on FIG. 9, of a backpack-type power sprayer according to a second embodiment. FIG. 9 is a diagram corresponding to FIG. The power sprayer 10A according to the second embodiment is the same as the stopper 86A according to the second embodiment shown in FIG. 9 except for the stopper 86 of the power sprayer 10 according to the first embodiment shown in FIGS. It is characterized in that it is changed, and the other configuration is the same as the configuration shown in FIG. 1 to FIG.

Specifically, the stopper 86A of the second embodiment is provided on the frame 17. More specifically, the stopper 86A is a vertical plate-like member standing up from the rear surface 71b of the hooking portion 71 of the frame 17. The rear end of the stopper 86A is located near the front end 84a of the control box 84 or the front end 84a. Such a stopper 86A basically (substantially) has the same configuration as the stopper 86 of the first embodiment, and functions and effects similar to those of the stopper 86 (see FIG. 4) of the first embodiment. Demonstrate.

Thus, the

stoppers

86 and 86A are provided on at least one of the lever guard 85 and the frame 17.

The backpack

type power sprayer

10, 10A of the present invention is suitable for spray work in a wide farm.

DESCRIPTION OF REFERENCE NUMERALS 10 back-to-back power sprayer 10A back-to-back power sprayer 11 fluid tank 11b widthwise side 11c most lateral side end 12 hose 13 scatter pipe 15 pump 15a pump outlet 16 engine 17 frame 18 back belt 18a one end Part 18b Other end part 72 Belt attachment 81 Throttle valve 82 Throttle lever 84 Control box 85 Lever guard 85b Side end 86 Stopper 86A Stopper Gr Ground Ha Hand La Straight line Mn Worker Su Protrusion (foreign matter)

Claims

A back type in which a liquid tank, a pump for discharging liquid in the liquid tank to a dispersion pipe, and an engine for driving the pump are integrally assembled, and a worker can carry on a back and carry out a spraying operation In the power sprayer,
A throttle lever located below the fluid tank for operating a throttle valve for the engine;
A lever guard located below the throttle lever to protect the lower surface of the throttle lever;
The throttle lever is disposed on the inner side in the width direction of the liquid tank with respect to a straight line passing through the most laterally projecting side end of the side surface in the width direction of the liquid tank and the side end of the lever guard Back-style power sprayer characterized by
A frame provided with the liquid tank;
And a back strap belt on which the worker carries the frame,
At one end of the strap belt there is provided a belt attachment for attaching the one end in the frame and in the vicinity of the throttle lever;
The power sprayer according to claim 1, wherein at least one of the lever guard and the frame is provided with a stopper for preventing the belt attachment from contacting the throttle lever.