JPH0420216Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fuel tank mounting structure for a backpack-type power sprayer, which allows the fuel tank to be fitted inside the fuselage.

[Prior art] Conventionally, this type of backpack-type power sprayer, etc., had a fuel tank chamber integrally formed within a synthetic resin backpack frame, as disclosed in Japanese Utility Model Application No. 60-179354 and 60−
Seen in Publication No. 179359.

[Problems to be solved by the invention] However, with such a structure, if fuel spills during refueling, it will have a negative effect on the machine, and it will be difficult to clean the inside of the fuel tank. Blow-forming the chamber increased costs, and the refueling process required careful attention and was tiring.

[Means for solving the problem] The present invention solves such problems and makes it possible to refuel well and easily.Therefore, the tip side of the base is extended to the full width. A horizontally elongated case frame is integrally formed, and a fuel tank is detachably fitted into the case frame so that the fuel tank can be freely pulled out so that the fuel filler port can protrude outward.

[Function] Therefore, normally, the fuel tank can be placed inside the case frame without becoming contaminated with chemicals, etc., and when the fuel tank is pulled out from inside the case frame, the fuel filler port opens. Since it protrudes outward away from the aircraft side, it is possible to refuel easily without spilling fuel onto the aircraft side.In addition, when the fuel tank is removed from the case frame, it can be cleaned easily. It will be possible.

[Example] Next, the embodiment shown in the drawings will be described.

In Figures 1 to 6, Figure 2 shows a front view of the backpack-type power sprayer, in which a backpack frame 7 is vertically disposed below a large drug tank 1 on the backpack side, with a cap 6 attached above. The base 3 is integrally formed by blow molding from a synthetic resin material so that the base 3 extends forward from the lower part of the backpack frame 7, and a back rest 8 is provided on the back side of the backpack frame 7. Attachment: A double backpack band 11 is installed between both support pieces 9 protruding from both sides of the lower part of the backpack frame 7 and an upper hook rod 10.
The engine 2 and the pump 12 are connected to each other, and an elastic support 13 is provided above the center side of the base 3 to connect the engine 2 and the pump 12.
A spray pipe is connected to the distal end side of a discharge hose 14 extending from the pump 12.

A horizontally long case frame 4 extending to the full width is integrally formed on the tip side of the base 3 by blow molding. A fitting groove 15 that opens to the front side is formed in a portion near one end of the upper surface, and a protrusion 1 is formed inward on the end surface of the interior.
6 is provided protrudingly.

Reference numeral 5 denotes a fuel tank, which is formed in a horizontally elongated shape so that it can be inserted into the case frame 4. A cap 5b is attached to the upper part of the upper surface near one end of the fuel tank 5, and the cap 5b is fitted into the fitting groove 15. A recess 17 that can be engaged with the protrusion 16 is formed on the end face of one end, and a support piece 18 extending from the other end of the fuel tank 5 and the other parts of the case frame 4 are provided. A nut 20 is screwed onto the tip of the bolt 19 that is inserted into the upper surface of the end side, so that the fuel tank 5 is pivotally attached to the fuel tank 5 so as to be rotatable and detachable within the cavity.

Note that an oil supply hose 21 is provided in communication between the engine 2 side and the other end side of the fuel tank 5.

Therefore, as shown in FIGS. 1 to 5, normally, the recess 17 is engaged with the protrusion 16 and the fuel tank 5 is fixed, and the case frame is closed to prevent it from becoming contaminated with chemicals or the like. 4 will be installed inside.

When refueling, if you hold the cap 5b and pull it forward, the recess 17 will come out of the protrusion 16 and the oil filler port 5a will come out of the fitting groove 15, and the sixth
As shown in the figure, the fuel tank 5 can be pulled out to the front while rotating around the bolt 19, allowing fuel to be easily and easily inserted into the fuel filler port 5a, which is located away from the aircraft, without spilling it onto the aircraft. This means that refueling can be performed, and cleaning can be easily performed by removing the bolts 19 and removing the fuel tank 5.

FIGS. 7 to 12 show another embodiment, in which the case frame 4 integrally formed on the distal end side of the base 3 is formed in a box shape with only one end open. A circular fitting groove 22 into which the fuel filler port 5a above one end of the fuel tank 5 can be fitted is formed on the upper surface of the side so as to open laterally. Stop projection 23
a, 23b are provided protrudingly on opposite sides, and a protrusion 25 is provided protrudingly on the side surface of the fuel tank 5 near the inner end, which can be pushed into and fitted into the long groove 24 formed on the inner side surface of the case frame 4. However, as in the previous embodiment, a lubricating hose is provided in communication.

Therefore, as shown in FIGS. 7 to 11, normally, the fuel tank 5 is opened with the fuel filler port 5a fitted into the fitting groove 22 and locked by the locking protrusions 23a and 23b. is housed inside the case frame 4, and when refueling, by grasping the cap 5b and pulling it outward, the fuel tank will close until the protrusion 25 abuts the end of the long groove 24, as shown in FIG. 5 can be pulled out to the outside, making it possible to replenish fuel to the fuel filler port 5a located far from the aircraft body side.Furthermore, when the protrusion 25 is pulled out strongly so that it separates from the long groove 24, the fuel tank 5 can be pulled out. This means that cleaning can be done easily. Note that the present invention can also be applied to a backpack-type power spreader.

[Effects of the invention] As described above, the present invention allows the fuel tank 5 to be housed inside the case frame 4 on the tip side of the base 3, which prevents it from being contaminated by chemicals, etc. This means that it can be stored, and when refueling, simply pulling out the fuel tank 5 allows the fuel filler port 5a to be moved away from the machine body, without spilling fuel onto the machine side. Good and easy refueling.
Further, the fuel tank 5 can be removed and cleaned easily, and the fuselage body can be made into a simple structure and blow molded at low cost, which has the advantage of being suitable for implementation.

[Brief explanation of drawings]

Figure 1 is a side view of a backpack-type power sprayer that is an embodiment of the present invention, Figure 2 is its front view, and Figure 3 is its second
4 is a plan view thereof, FIG. 5 is a partial sectional view of FIG. 4, FIG. 6 is an explanatory diagram of the operation of FIG. 4, and FIG. 7 is a diagram of another embodiment. A front view, FIG. 8 is a plan view thereof, and FIG. 9 is an enlarged sectional view of a part of FIG. 8.
FIG. 10 is a front sectional view of a part of FIG. 8, FIG. 11 is a plan sectional view, and FIG. 12 is an explanatory view of the operation. 1... Drug tank, 2... Engine, 3... Base, 4... Case frame, 5... Fuel tank, 5
a...Refueling port.

Claims (1)

[Scope of utility model registration request] In a backpack-type power sprayer, a base 3 on which an engine 2 etc. can be mounted is integrally formed at the bottom of a drug tank 1 by blow molding. The case frame 4 is integrally formed, and the fuel tank 5 is detachably fitted in the case frame 4 so that the fuel tank 5 can be freely pulled out so that the fuel filler port 5a can protrude outward. Features a fuel tank mounting structure.