JPH0632823Y2 - Structure of back support of backpack control machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a backrest structure of a backpack-type exterminating machine which can be brought into contact with the back side of a human body and carried on the back.

[Prior Art] Conventionally, in a backpack-type control machine configured such that a backpack frame in which a chemical tank, an engine and the like are connected can be carried by a backpack band, for example, Japanese Utility Model Publication No. 42-130.
As can be seen in Japanese Patent No. 03, Japanese Utility Model Publication No. 46-19487, etc., the back support that comes into contact with the back of the human body when carrying a back has a structure in which the height is uniform with respect to the back side.

[Problems to be Solved by the Invention] In this type of backpack control machine, the load on the lower side of the backrest that comes into contact with the lower back side of the human body increases while the body is actually carried. The load is low on the upper side of the back support that will come into contact with the shoulder blades of the
In the conventional back support structure as described above, the contact of the human body to the scapulae side becomes higher, and the pest control machine tends to move away from the human body, which is uncomfortable for the human body, makes it easy to fatigue and is difficult to carry Had.

[Means for Solving the Problem] The present invention solves such a problem as a problem, and makes it possible to carry a good feeling and a good feeling on the back of the human body. The backrest on the backpack frame side, which can be contacted from the shoulder blades above and below the human body to the waist, is made softer so that the upper portion that contacts the upper shoulder blades is softer and easier to compress than the lower portion that contacts the lower waist. Is formed by forming a different soft upper part and a harder lower part.

[Operation] Therefore, since the load of the machine body on the lower part of the backrest that is in contact with the waist of the human body is larger than the load of the machine body on the upper part of the backrest, the deformation amount of the lower part of the backrest is firmly received. It is made of less material and is stiffer than the upper part of the backrest, and the upper part of the backrest is made of a softer material than the lower part of the backrest so that it softly deforms even with a small load of the aircraft, so carry it on your back. At times, the upper part of the backrest can be softly and closely attached to the scapulae of the operator, so that the airframe can be comfortably carried on the back.

Example Next, an example shown in the drawings will be described.

1 to 7, FIG. 1 shows a side view of a backpack-type power sprayer, in which the lower side of the rear side of the chemical tank (1), which is a chemical solution tank, has both side plates from both sides of a wide surface (3a). (3b) (3
c) The upper part of the backpack frame (3) formed by bending the backpack frame (3) is fitted, and both bolts (7) which are inserted into both support pieces (6) extending above the backpack frame (3) are attached to the drug tank. A plurality of protrusions (10) that can be detachably engaged with the spray pipe (9) are provided on the side of the drug tank (1) having a cap (8) on the upper side, which is inserted and connected to (1). When projecting, the fuel tank (11) is placed in the recess on the front side of the drug tank (1).
Is fitted and fixed, and the engine (2), pump (P), etc. are equipped between the lower parts of both side plates (3b) (3c) of the backpack frame (3), and the upper rear part of the drug tank (1). The upper and lower ends of both backpack bands (4) are connected to the latch (12) provided on the backpack frame and the hooks (13) (13) provided at the bottom of both side plates (3b) (3c) of the backpack frame (3). So that it can be carried on the back, and an opening (14) having a plane cross section of L-shape is formed at an intermediate position in the vertical direction of the backpack frame (3) from the side plate (3b) to the surface (3a). A large notch is formed so that the knob (15) of the starting rope of the engine (2) can be pulled out through the opening (14).

(16) is a back vinyl sheet, which is formed so that it can match the entire surface (3a) of the backpack frame (3) from the periphery of the opening (14), and the outer circumference can match the outer circumference of the back vinyl sheet (16). Front vinyl sheet (17) formed as above and the back vinyl sheet
Between (16), the upper part (5a) of the back pad (5) that can come into contact with the scapulae that is above the back side of the human body, and the lower part of the back pad (5) that can come into contact with the lumbar area below the back side ((5)). 5b) and the upper and lower are spaced apart, but the lower part (5b) of the back support (5) is made of a relatively hard material such as polyethylene foam,
The upper part (5a) is made of a material such as urethane foam, which is softer and easier to compress than the lower part (5b), and the upper part (5a) and the lower part (5b) have the original shape before deformation as shown in FIG. The same length L1 to the back side of the human body
The back vinyl sheet (16) is flat so that the space between the upper part (5a) and the lower part (5b) is a recess (A) that opens laterally to the outside. On both vinyl sheets (1
6) Partly heat-bond each of (17) as indicated by S,
The upper part (5a) and the lower part (5b) are sealed together with air.

In addition, a seating plate is provided at the four vinyl sheets (16) (17) near the notches formed on both ends of the upper part (5a) and the lower part (5b) of the backrest (5). Through holes (20) into which bolts (19) with (18) can be inserted are formed, and nuts (21) are provided at four positions on the surface (3a) of the backpack frame (3) corresponding to each through hole (20). )
And a notch-shaped opening (22) into which the instruction manual (B) and the like can be inserted is formed obliquely in the area of the front vinyl sheet (17) that is inside the recess (A). And configure.

Therefore, one back vinyl sheet (16) enclosing the upper part (5a) and the lower part (5b) of the back support (5) is bonded to the entire surface (3a) of the backpack frame (3) in a flat state. At the same time, by inserting the four bolts (19) into the nuts (21) through the through holes (20), it becomes possible to assemble them as shown in FIGS. 1 and 2.

If you carry both shoulder straps (4) (4) on your shoulders and carry the weight of the aircraft, it will contact the waist of the human body (5)
While the load on the lower side (5b) of the is higher, the back support (5)
The upper part (5a) of the human body is more likely to hit the human body due to its higher contact with the human scapulae, but when each is compressed, the upper part (5a) is lower (5b) as shown in Fig. 7. The length is shortened to a length (L3) shorter than the length (L2) of (1), so that the shoulder scapula can be closely adhered to the shoulder scapula side, and the user can feel and feel lightly.

8 to 9 show another embodiment, and the upper half of the upper part of the back support (5) attached to the front side of the backpack frame (3).
(5a) is made of different materials so that it is softer and easier to compress than the lower half (5b), which is the lower half, and the upper part (5a) is in the original shape before deformation as shown in FIG.
The lower part (5b) and the lower part (5b) are formed to have the same length (L1) with respect to the back side, and when carrying the same as in the above embodiment, as shown in FIG. 10, the upper part (5a) is the lower part. The length is shortened to the length (L3) shorter than the length (L2) of (5b), and it is possible to comfortably and lightly carry the back.

[Advantage of the Invention] As described above, the present invention provides a backrest (5) that abuts on the waist of the human body.
The load of the aircraft against the lower part (5b) of the back of the backrest (5) (5a)
Since it will be larger than the load of the aircraft on the back, in order to firmly receive the large load, the lower part (5b) of the back support (5)
Is made of a material that reduces the amount of deformation, and is made firmer than the upper part (5a) of the backrest (5), and the upper part (5a) of the backrest (5) is softly deformed even under a small aircraft load. (Five)
Since it is made of a different material that is softer than the lower part (5b), the upper part of the back support (5) can be attached softly and closely to the scapulae of the worker when carrying on the back, and it is comfortable and stable to carry the aircraft on the back lightly. Therefore, the control work can be performed with good workability, and it has a feature that it can be suitably implemented with a simple structure.

[Brief description of drawings]

FIG. 1 is a side view of an aircraft which is an embodiment of the present invention, FIG. 2 is a rear view thereof, FIG. 3 shows a part of FIG. 2, FIG. 4 shows a backpack frame, and FIG. FIG. 6 is a cross-sectional view taken along the line VV of FIG. 3, FIG. 6 is a side view of the backrest, FIG. 7 is an operation explanatory view of FIG. 6, FIG. 8 is a side view of another embodiment, and FIG. The right side view and FIG. 10 show the operation explanatory view of FIG. (1) …… Drug tank, (2) …… Engine (3) …… Backpack frame, (4) …… Backpack band (5) …… Backrest, (5a) …… Upper part (5b) …… Lower part

Claims (1)

[Scope of utility model registration request] 1. A backpack of a human body, comprising a backpack frame (3) in which a chemical tank (1), an engine (2), etc. are connected in series and which can be carried by a backpack band (4). The back support (5) on the side of the backpack frame (3) that can contact from the upper and lower shoulder blades to the waist, and the upper part that contacts the upper shoulder blades
In order to make (5a) softer and easier to compress than the lower part (5b) that abuts the lower lumbar region, the upper part (5a) of different material and the lower part (5b) which is harder than it are formed and configured. The back support structure.