JPH0475740B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a backpack mount and a manufacturing method thereof.

BACKGROUND TECHNOLOGY For example, in backpack-type machines such as chemical sprayers, the main mechanical parts such as the internal combustion engine are mounted on a backpack mount, and the user carries this mount on his or her back during work. Conventionally, such a frame has been formed by bending pipe materials such as metal pipes and joining them by welding or the like to form an L-shaped frame with a pedestal portion protruding rearward. Also, this L
Although it has been attempted to integrally mold a shaped frame from plastic material, it is extremely difficult to mold each part to a predetermined uniform thickness. For this reason, the production and assembly costs of conventional frames are high, and different materials with different wall thicknesses must be used depending on the load applied, resulting in high material costs and the weight of the frame device itself. It is quite heavy and puts a burden on the worker, and there is a risk of damage to the machine as there is virtually no means to protect the machine mounted on the pedestal, and the pedestal must be assembled at the factory before it can be used as a final product. Since the product had to be shipped after the process, there were inconveniences such as high transportation costs.

Problems to be Solved by the Invention Therefore, an object of the present invention is to eliminate the disadvantages of the conventional techniques, and to provide a backpack mount that is simple in structure and convenient to use, and a method for manufacturing the same.

Means for Solving the Problems That is, according to the present invention, the backpack mount is formed integrally with a main mount portion and both sides of the main mount portion through thin wall portions, and the Left and right guard parts are bent to one side of the main pedestal part, and each of the main pedestal part and the guard part has an inclined surface part formed in opposite directions with the thin wall part in between. They are connected and fixed in close contact and are formed into a U-shape as a whole.

Furthermore, according to the present invention, the above-mentioned backpack mount has the following features:
A main pedestal part and left and right guard parts integrally formed on both sides of the main pedestal part through thin wall parts are integrally molded into a flat plate shape as a whole from a plastic material by blow molding, Next, the guard portion is bent toward one side of the main frame portion at the thin wall portion, and an inclination is formed in each of the main frame portion and the guard portion in opposite directions with the thin wall portion sandwiched therebetween. It is characterized in that the surface parts are connected and fixed in close contact with each other in a U-shape as a whole.

Function: Therefore, the pedestal can be formed into a lightweight U-shaped box structure, and the guard portion surrounds and protects the mechanical equipment mounted or mounted on the pedestal from both sides.
Further, the molding and assembly of the pedestal can be easily performed at separate locations.

Embodiments Next, the present invention will be described based on embodiments shown in the drawings.

FIGS. 1 and 2 are perspective views showing a state in which the backpack mount 1 according to the embodiment of the present invention has been assembled. , has a main frame portion 2 and a pair of left and right guard portions 3 and 4, and these portions are molded and assembled as described below. The main mount part 2 has a rectangular shape as a whole, and a rectangular opening 7 is formed in the center thereof, passing through from the front surface 5 forming the back surface to the rear surface 6 on the back side, and a back rest (not shown) is formed in the center part. ) and as an air intake part for a blower (not shown), and thus the main frame portion 2 is formed into a rectangular frame shape. In addition, 3 in the diagram
Reference numerals 2 and 33 indicate mounting brackets used for attaching the backrest, etc. Furthermore, the main frame portion 2 has a backpack belt attaching portion 8 integrally formed at the center portion of its upper side, and a lower side portion 9 is formed flat. Said left and right guard parts 3 and 4
have substantially the same rectangular frame shape,
They are arranged so as to extend rearward from both sides of the main frame portion 2, respectively. The lower side portions 10 and 11 of the guard portions 3 and 4 are connected to the main frame portion 2.
It is formed flat so as to be located in the same plane as the lower side portion 9 of. Therefore, the pedestal 1 can be stably placed and stored on a flat surface such as the ground or floor. Furthermore, protrusions 12 and 1 are provided on the upper part of the rear surface 6 of the main frame portion 2.
3 is formed, and a mechanical device (not shown) is installed and fixed on these protruding parts 12 and 13, and is placed in a space surrounded by the main frame part 2 and guard parts 3 and 4 in a U-shape. be done. For this reason, the pedestal 1
The mechanical equipment installed in the machine is protected by the guard parts 3 and 4, and can prevent danger such as damage.

The pedestal 1 described above is manufactured and assembled as described below. That is, the pedestal 1 is first molded from a suitable plastic material into the flat shape shown in FIGS. 3 and 4 by blow molding. At this time, the main pedestal part 2 and the guard parts 3 and 4 of the pedestal 1 are each formed into a hollow box-shaped thin-walled structure, and the left and right sides of the front surface 5 of the main pedestal part 2 and the guard parts 3 and 4 are connected to each other. They are integrally connected and molded together by flexible thin-walled sections 14 and 15 formed longitudinally therebetween, respectively. The main frame portion 2 has sloped surface portions 16 and 17 extending rearward and inwardly from the thin wall portions 14 and 15 on both left and right sides thereof. On the other hand, the guard parts 3 and 4 are inclined in the opposite direction to the inclined surface parts 16 and 17 of the main pedestal part 2 from the thin wall parts 14 and 15 toward the rear on the sides adjacent to the main pedestal part 2. Inclined surface portions 18 and 1 extending from
9 respectively, and the included angle α between the right inclined surface portion 16 of the main mount portion 2 and the inclined surface portion 18 of the right guard portion 3, and the angle α between the left inclined surface portion 17 of the main mount portion 2 and the The included angle β between the left guard portion 4 and the inclined surface portion 19 is formed to form an angle of approximately 90 degrees as shown in FIG. 4 when the pedestal 1 is molded by blow molding. This configuration allows the pedestal 1 to be mounted on the thin-walled portion 1 during subsequent assembly.
At 4 and 15, the guard parts 3 and 4 are respectively bent about 90 degrees rearward with respect to the main frame part 2,
It can occupy the positions shown in FIGS. 1 and 2.

Furthermore, the main pedestal portion 2 of the pedestal 1 has holes 20 and 21 formed at the top of both sides of the rear surface 6 into which suitable connectors (not shown) such as bolts can be fitted. Two pairs of holes 2 at the bottom of both left and right sides
2, 23 and 24, 25, respectively. On the other hand, the right side hole 20 and the holes 22, 2 of the main frame part 2 are located at the upper and lower rear sides of the right guard part 3, which are close to the main frame part 2.
A hole 26 and holes 27 and 28 respectively corresponding to the holes 3 are formed. Similarly, holes 2 corresponding to the holes 21 and holes 24 and 25 on the left side of the main pedestal part 2, respectively, are provided in the upper and lower rear side parts of the left guard part 4 near the main pedestal part 2.
9 and holes 30 and 31 are formed, respectively.

When the pedestal 1 is assembled, the pedestal 1 has flexible thin-walled portions 14 and 1 molded into the hinge portion as described above.
In step 5, the left and right guard parts 3 and 4 are each bent approximately 90 degrees rearward with respect to the main mount part 2, and connectors are fitted into the corresponding holes of the main mount part 2 and guard parts 3 and 4, respectively. By fitting and fixing, the frame 1 can be assembled into the shape shown in FIGS. 1 and 2.

With the above-described configuration, the pedestal 1 has the advantage of preventing damage to the machinery etc. attached to it, and can also be mass-produced by blow molding at a molding station, and can be molded into a hollow box-shaped structure. It is lightweight yet strong, and many gantry devices can be stacked and transported to the desired assembly location in the flat molded state shown in Figures 3 and 4, reducing transportation costs. It has the advantage of being cheap and allowing for on-site assembly.

Note that a rear cover portion may be similarly provided in series with either the left or right guard portions.

Effects of the Invention With the configuration of the present invention explained above, the present invention has the following effects:
It can be easily assembled by setting the mutual angle between the main pedestal part and the guard part to a predetermined value, and even when the entire structure has a hollow thin wall structure, sufficient strength can be ensured, and compared to conventional pedestals, It is lightweight and has a high strength structure, effectively protects the machines etc. attached to the mount, prevents the risk of damage to the machine, etc., and allows mass production of the mount to reduce manufacturing costs. In addition, it has the advantage of facilitating on-site assembly and reducing transportation costs.

[Brief explanation of drawings]

FIG. 1 is a perspective view from the front upper left side showing the shape of a backpack mount according to an embodiment of the present invention after assembly is completed; FIG. 2 is a perspective view from the rear upper right side of the backpack mount shown in FIG. 1; 3 is a plan view showing the shape of the backpack-type machine mount device shown in FIG. 1 immediately after molding, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3. 1... Back mount, 2... Main mount, 3, 4...
...guard part, 14, 15...thin wall part.

Claims (1)

[Scope of Claims] 1. A main pedestal part 2, which is integrally formed on both sides of the main pedestal part with thin wall parts 14 and 15 interposed therebetween, and which extends to one side of the main pedestal part in the thin wall part. It has left and right guard parts 3 and 4 that are bent,
Slope portions 16, 18, 17, and 19 formed in opposite directions on each of the main frame portion and the guard portion with the thin wall portion sandwiched therebetween are connected and fixed in close contact with each other, so that the overall shape is U-shaped. A backpack stand formed by forming. 2 A backpack mount 1 having a main mount portion 2 and left and right guard portions 3 and 4 integrally formed on both sides of the main mount portion through thin wall portions 14 and 15, respectively, is blow molded from a plastic material. Then, the guard portion is bent toward one side of the main pedestal portion at the thin wall portion, and the thin wall is formed on each of the main mount portion and the guard portion. Inclined surface portions 16, 1 formed facing in opposite directions with the portions sandwiched therebetween.
8, 17, and 19 are connected and fixed in close contact with each other in a U-shape as a whole.