JPS581965B2 - filter device - Google Patents

Description

[Detailed description of the invention] FIELD OF THE INVENTION The present invention relates to a filter device.

Conventionally, a filter device for filtering air, gasoline, etc., which is used in motorcycles, etc., has a donut-shaped filter body made of filter paper folded in a zigzag shape, and two ends are attached to each end of the filter body. Because the case contained a cap for closing the body and a cap with a port attached with adhesive, the number of manufacturing steps and weight increased. This also caused the equipment to become larger.

One object of the present invention is to provide a filter device that eliminates the above-mentioned drawbacks.

The invention will now be explained in detail with reference to the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes a plate having a plurality of windows 1A in its center, and a sheet-like filter material 2 is attached to one side of the plate 1 to cover the plurality of windows 1A.

Thereby, the sheet-like filter material 2 is supported by the rocky part 1B extending between the peripheral part of the plate 1 and the window 1A.

As the sheet-like filter medium 2, filter paper, nonwoven fabric, Scott, etc. can be used.

Note that the shape and number of the windows 1A may be in any form other than that shown in the drawings.

Both sides of the plate 1 are provided with triangular recessed portions 3A and 4A surrounding the plurality of windows 1A in the center thereof, and ports 3B and 4B that open into the recessed portions 3A and 4A. The first and second casings 3 and 4 are integrally molded with resin so that the connecting portions with the plate 1 are bent, and when bent, they overlap each other to form a box shape.

As a result, the first and second casings 3 and 4 are
The plate 1 is formed to diagonally partition a substantially rectangular space surrounded by the recessed portions 3A and 4A of the second casings 3 and 4, thereby preventing fluid from flowing inside the recessed portions 3A and 4A. Efforts are being made to improve fluidity, overall strength of the device, etc.

In addition, in the case of such a configuration, when the filter device is used horizontally, the surface of the filter medium 2 becomes an inclined surface.
Dust, etc. collected on the filter material 2 flows along the slope of the filter material 2.
It becomes easier to collect around the filtration, and the life of the filtration is extended.

When using the filter device with the above configuration as an air or gasoline filtration device for motorcycles, ports 3B and 4B
Connect to the middle of air, gasoline, etc. piping.

In this case, the port 4B on the side to which the filter material 2 is attached is used as a fluid intake port, and after the fluid taken in from the port 4B into the recessed portion 4A is filtered by passing through the filter material 2, into the recessed part 3A and take it out from the port 3B.

During this time, the machine portion 1B of the plate 1 supports the filter material 2 against the fluid pressure.

Since the sheet-like filter material 2 is located diagonally between the recessed portions 3A and 4A, the fluid passes uniformly over the entire surface of the sheet-like filter material 2.

Next, a method for manufacturing the filter device having the above configuration will be explained.

First, as shown in Fig. 2, a plurality of windows 1A are installed in the center.
- and recessed portions 3A and 4A respectively connected to one end and the other end of the plate 1 and surrounding a plurality of windows 1A in the central portion, and the recessed portions 3A. ,4
First and second casings 3 and 4 equipped with ports 3B and 4B that open to A are integrally molded from resin, and then a sheet-like filter material 2 that covers a plurality of windows 1A is attached to one side of the plate 1. In this state, the first and second casings 3 and 4 are bent and the opening sides of the recessed portions of the first and second casings 3 and 4 are stacked on both sides of the plate 1, and then the recessed portions 3A,
The first and second casings 3, 4, the plate 1, and the sheet-like filter material 2 are welded together along the circumference of the filter 4A to obtain a filter device as shown in FIG.

As the welding means, an ultrasonic welding method or the like can be used.

As explained above, since the filter device according to the present invention uses a sheet-like filter material, bending processing of the filter material is not required, which reduces manufacturing man-hours, and also allows the device to be made smaller and lighter. It happens.

Moreover, since the sheet-like filter material is attached to one side of the plate with multiple windows in the center, the sheet-like filter material is supported by the plate so as not to be deformed without narrowing the space inside the first and second casings. This makes it possible to provide a compact filter device with high filtration capacity.

Furthermore, since the sheet-like filter material is disposed diagonally between the recessed portions, the fluid passes uniformly over the entire surface of the sheet-like filter material, thereby increasing the filtration efficiency.

Since the first and second casings and the plate are integrally molded from resin, the number of manufacturing steps is significantly reduced, and
- There is no risk of misalignment when welding the second casing, plate, etc., and there is no risk of defective products.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of a filter device according to the present invention. FIG. 2 is a partially cutaway perspective view showing the filter device shown in FIG. 1 in the middle of the manufacturing process. DESCRIPTION OF SYMBOLS 1... Plate, 1A... Window, 2... Sheet-like filter material, 3... First casing, 3A... Recessed part,
3B...Po-l-, 4...Second casing, 4A.
...Recessed part, 4B...Port.

Claims (1)

[Claims] 1. A plate with a window in the center and triangular recesses each having a size that can surround the plurality of windows in the center are arranged in opposite directions, by integral molding with resin,
and a first and a second boat provided with a boat opening in the recessed portion.
and a casing, these connecting parts are bent so that when bent, they are folded over each other to form a box shape, and a sheet-like filter material is attached to the window in the center part. filter device.