JPS6012113A - Filter body for fluid - Google Patents

Abstract

PURPOSE:To provide a filter body reduced in the numbers of parts and the numbers of assembling processes and capable of being avoided from the delamination of a connected part, in fixing the filter body formed by mutually connecting the curved ends of a curved body formed by curving a filter material having a corrugated cross-sectional area in a case, obtained by using integrally molded resins in the aforementioned connection and fixation. CONSTITUTION:A center cylinder 4 made of a synthetic resin, a connected part 5 made of a synthetic resin formed by connecting both ends of a curved body 2 and a support frame 7 made of a synthetic resin provided to the outer surface of the curved body 2 are integrally molded along with a reinforcing part 6 to the innermost peripheral part of the curved body 2 to constitute a filter body. The outermost peripheral part and/or the innermost peripheral part of the curved body 2 are made longer than the height dimension of the corrugated part in the other region thereof and these parts are deeply penetrated into the resin materials forming a frame 7 and a cylinder 4 to enhance bonding strength. By this method, resin molding in connecting the end parts of the curved body 2 and resin molding in constituting the frame 7 and the cylinder 4 can be simultaneously achieved and a filter body capable of being avoided from the delamination in the connected parts is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid filter suitable for use, for example, in an air cleaner for an automobile internal combustion engine.

Conventionally, this kind of filter body has been manufactured by Japanese Patent Application Laid-open No. 57-140.
As disclosed in Japanese Patent No. 617', a plate-like t-shirt whose length at one end is relatively different from the length at the other end. Polished h
) is also formed, and the furnace material is bent so that it has a cross-sectional waveform shape between the two ends, and one end with the shorter length is on the inside,
A filter body is known in which a curved body is formed by curving so that the other end of the long dimension is on the outside, and the curved ends of the curved body are connected to each other.

Naturally, a support structure is required to house and fix such a filter in a case.

As such a support structure, as similarly disclosed in the above-mentioned publication, a support frame or the like is adhesively fixed to the filter body.

Therefore, the conventional type requires a support frame as a separate part, resulting in an increase in the number of parts and an increase in the number of assembly steps.

Therefore, the present invention provides a resin support frame on the outermost periphery of the filter body and a center cylinder on the innermost periphery, and integrates the support frame and the center cylinder with resin that connects the curved ends of the above-mentioned curved body. , it is possible to support the overbody inside the case by the center tube support frame, and also to simultaneously perform resin molding when connecting the curved ends of the curved body, resin molding when forming the support frame, and the center tube. It is an object of the present invention to provide a fluid filter that can avoid separation of the joint by adopting a configuration that increases the strength of the joint between the center cylinder and/or the support frame and the filter.

□ Hereinafter, the present invention will be explained in detail with reference to specific examples.

FIG. 1 shows the shape of the furnace material constituting the filter of the present invention. The furnace material 1 as a whole has a substantially fan shape, with one end having a short length A-A' and the other end having a short length s-A'.
The length dimension of s' is long. In this furnace material 1, two groups having the same center but having different intervals between fold lines are repeated alternately every other group as can be seen from the light in FIG.

The above-mentioned fold line is formed using a heated roller or the like, so that the furnace material 1 can be easily bent based on this fold line. Further, in this furnace material 1, the distance between the broken line RR' and the end ss' is large.

FIG. 2 shows the furnace material l shown in FIG. 1 folded along its fold line. Since the folding lines of the furnace material 1 are arcuate, the entire furnace material 1 is curved as shown in FIG. 2 after being bent, and a plurality of corrugated portions are formed by bending the furnace material along the folding lines. Note that the top row and bottom row of the plurality of waveform parts are the second
As shown in the figure, the curved body 2 is gently sloped between its innermost and outermost peripheries. This is because, as mentioned above, the intervals between the folding lines of the furnace material 1 are different.

FIG. 3 shows a filter body constructed using the above-mentioned curved body 2, and FIG. 4 shows a cross section taken along line AA in FIG.

In FIGS. 3 and 4, reference numeral 4 designates a central cylinder made of synthetic resin provided at the innermost circumference of the curved body 2, and has a hole 3. Reference numeral 5 denotes a joint made of synthetic resin that joins both ends of the curved body 2. Further, 6 is a reinforcing portion made of synthetic resin provided on the outer surface of the curved body 2, and 7 is a support frame made of synthetic resin provided at the outermost periphery of the curved body 2. These are the center cylinder 4. Joint portion 5, reinforcement portion 6. and the support frame 7 are integrally molded with each other. Note that these synthetic U1 resin materials include, for example, polypropylene, nylon, urethane, and the like.

Next, a method for manufacturing a filter having the above structure will be explained. Note that FIGS. 2 to 4 will be used in the explanation.

First, the curved body 2 shown in FIG. 2 tends to return to its original state due to the elastic reaction force of the material, and therefore cannot be maintained in the state shown in FIG. m2 even if it is bent along the fold line in FIG. 1. Therefore, after being bent, it is set in a mold having the same shape as shown in FIG. 2, and heat and pressure are applied. This allows the second
A curved body 2 whose shape is maintained as shown in the figure is obtained.

Next, this curved body 2 is set in a mold.

That is, the set state of the mold and the curved body 2 is as shown in FIG. In order to mold the joint part 5 and reinforcing part 6 in Fig. 3, the Φ synthetic resin injection part (see Fig. 6) is made of a medium having opposing <p-shaped parts 10' and 11' at both ends as shown in Fig. 5. Child 10.11
(see Figure 6). This core to, it
is placed inside the mold 8.9, and this core 10.11
The corrugated portion of the curved body 2 is held between both sides of the top row and the bottom row. Therefore, the core 10° 11 has a shape corresponding to the shape of the corrugated portion of the curved body 2.

The state in which the curved body 2 is held between the cores 10, 11 is shown in the left half of FIG. The iP material of the curved body 2 that is held between the two members 11 is thinner than other parts (see the right half of FIG. 5).

On the other hand, the molds 12 and 13 form a synthetic resin injection part (2) for molding the center cylinder 4 shown in FIG.

In the above configuration, the molten synthetic resin is injected into the synthetic resin injection part 1.1 in the mold via the runner 14.15, and the molten synthetic resin is injected into the synthetic resin injection part 1 through the runner (not shown). Inject the resin. After injection, by cooling and removing the mold, a filter having the structure shown in FIG. 3 is obtained.

By the way, the outermost peripheral part of the curved body 2 is the synthetic resin injection part I.
If the inwardly protruding length is short, the outer peripheral portion may roll up during molding and be exposed to the outer surface of the support frame 7 after molding.

On the other hand, in the present invention, as described above, since the distance between the folding line RR' of the furnace material l which is the starting material and the end S-8 is wide, the outermost part of the curved body 2 ends up being The height dimension is longer than other parts.

Therefore, since the outermost periphery of the curved body 2 is longer than the height of the corrugated portion in other parts by the dimension A, the length of the outermost periphery that enters the injection part I for forming the support frame 7 is Therefore, the position of the injection part I is set so that the resin flows as shown by the arrow in FIG. Become.

Therefore, it is possible to eliminate the problem that the outermost peripheral portion of the curved body 2 curls up during molding.

Next, the structure of an air cleaner for an internal combustion engine equipped with the above-described filter body will be explained. In FIGS. β and 9, the filter body 16 is arranged in the space between the case 17 and the cap 18', and the ring-shaped support frame 7 of the filter body 16 is inserted through a sealing gasket 19.20. It is clamped and fixed between the case 17 and the cap 18.

The center tube 4 of the filter body 16 is supported on a support stay 21 provided inside the case 17.

In this filter body 16, a part of the outer periphery of the support frame 7 includes a protrusion 7a for positioning in the circumferential direction (see Fig. 3.4) and a thick part 7b for positioning in the vertical direction (see Fig. 3.4). ) are integrally molded, and such positioning parts 7a, 7b
Corresponding to this, the case 17 has a recess 17a and a step 17b.
Further, the cap 18 is integrally provided with a protrusion 18a.

In addition, in the figure, 22 is a metal collar, 23 is a rubber ring, 2
4.

1 is a clamp for tightening and fixing the case 17 and the cap 18, and is composed of a mounting portion 24a attached to the cap 18, a lever portion 24b, and a tightening portion 24C.

Further, 25 indicates a non-clean side, 26 indicates a clean side, and 27 indicates a suction pipe.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and that various modifications can be made.

(1) The waveform part of the IP filter body is as shown in Figure 8.
The structure is gently sloped between the innermost and outermost peripheries, but by making the intervals of the folding lines on the furnace material 1 in Fig. 1 the same, the corrugated parts are made to be the same. Can be made high.

(2) As shown in FIG. 10, the outermost peripheral portion 2a of the curved body 2 may be compressed in advance by means such as hot pressing.

(3) In the above embodiment, the force S is such that the waveform size of the outermost part of the curved body 2 is longer than the other parts, and the waveform part of only the innermost part 2b as shown in FIG. The height of the corrugated portion may be made longer than that of other portions, or the height of both the outermost and innermost corrugated portions may be made longer.

(a) The filter body of the present invention can be applied to filters for various liquids and gases in vehicles, and has a wide range of uses.

As detailed above, according to the present invention, the filter body can be supported in the case by a support frame provided at the outermost circumference of the filter body, and a central cylinder provided at the innermost circumference. Furthermore, the present invention provides resin molding and a support frame when connecting the curved ends of the curved body, which is the predecessor of the filter body.

Resin molding for constructing the center cylinder can be accomplished at the same time, so the manufacturing process can be simplified and an inexpensive filter body can be obtained. Furthermore, the bonding strength between the curved body and the support frame and/or the center cylinder can be improved.

[Brief explanation of the drawing]

The first figure is a plan view of the furnace material that constitutes the filter body of the present invention, and the second figure is a plan view of the furnace material that constitutes the filter body of the present invention.
The figure is a perspective view showing the furnace material in Fig. 1 folded along the fold line, Fig. 3 is a plan view showing the filter of the present invention, Fig. 4 is a cross-sectional view taken along line AA in Fig. 3, 5 is a sectional view corresponding to the line B-B in FIG. 6, FIG. 6 is a plan view that does not schematically show how the mold is assembled to the curved body, and FIG. 7 shows the main parts of FIG. 5. FIG. 8 is an enlarged sectional view showing an air cleaner for an internal combustion engine equipped with the filter body of the present invention, and is a sectional view taken along line C-C in FIG. 9. FIG. 9 is a plane view of FIG. 8. Figures 10 and 1
Figure 1 shows another embodiment of the invention. 1... Furnace material, 2... Curved body, 4... Center cylinder, 5...
...Joint portion, 7...Support frame, 2a...Outermost periphery, 2
b...Innermost circumference. Representative patent attorney Takashi Okabe Procedural amendment July 11, 1982 Commissioner of the Japan Patent Office 2 Name of the invention, tI')" -/-) Related Patent Applicant: 1-1 Showa-cho, Kariya-shi, Aichi Prefecture (426) Nippon Denso Co., Ltd. Representative: Kengo Toda 4th Director, 1-5 Showa-cho, Kariya-shi, Aichi Prefecture 448 Invention of the specification subject to amendment Detailed explanation column, brief explanation column of drawings, and drawings. 6. Contents of amendment (Insert the following sentence after "It is thinned." on page 6, line 20 of the '11 specification. "The relationship between the mold 9 and the lower core 11 and the assembly relationship of the curved body 2 to the mold 9 are shown in FIGS. 7 and 8.
As shown in the figure. In addition, each of these figures is marked with 'JIB,
12 is omitted. J(2) "Figures 2 to 4" on page 5, line 14 to line 15 of the same book as "Figure m2 to Figure 9"
Correct. (3) "Figures 8 and 9" on page 8, line 9 of the same book [
1θ and 11”. (4) "Figure 8" on page 9, line 12 of the same book has been replaced with "Figure 10"
Correct. (5) "Figure 10" on page 9, line 17 of the same book is corrected to "Figure 12." (6) "Figure 11" in the same book, page 10, line 1 to line 12 of the same page is corrected to "Figure 13." (7) “Plan view,” and “Fig. 7” on page 11, line 5 of the same book.
Insert the following sentence between. 7 is a perspective view showing the relationship between the mold 9 and the core 11 in FIG. 5, and FIG. 8 is a perspective view showing the relationship between the mold 9 and the core 11 in FIG. ``Figure 9'' is corrected to ``Figure 9-''. (9) ``Figure 8'' on page 11, line 6 of the same book [10(l)
O) Correct "Figure 9" in line 7 of page 11 of the same book to "Figure 11'." Corrected to ``Figure 1''. . (11) Page 8, No. 9 of the same book is corrected to "Figure 11 is Figure 10." (12) 111J, page 11, line 8 to page 11, line 9, “
Figures 10 and 11"1i9J are corrected to [Figures 12 and 13]. Add hunting to the drawn out part of code 7). (14) Figures 7 and 8 are added as drawings as attached. (15) Figure 7 of the drawings has been changed to Figure 9 and corrected as shown in the attached sheet (change of drawing number and correction of some of the solid lines of the leader line of dimension A to thin lines). (16) Figures 8 to 11 of the drawings are attached to 1O.
Figures 1 to 13 have been corrected (figure numbers changed). -Peichi

Claims (1)

[Scope of Claims] (11 plate-shaped furnace material, one side and the other side of the furnace material facing each other are bent into a cross-sectional wavy shape □, and the furnace material is bent into this wavy shape. A hoop material is curved with the negative side part inside and the other side part outside to form a curved body, the curved ends of this curved body are connected with resin, and the curved body is A supporting frame made of resin is provided on the outermost periphery of the curved body, and a central □ cylinder made of resin is provided on the innermost periphery of the curved body. A fluid filter body formed integrally with the curved body, wherein the outermost circumferential portion and/or the innermost circumferential portion of the curved body are dimensionally larger than the height of the corrugated portion in other parts of the curved body. A fluid filter body characterized in that the dimensionally long part is long and that the dimensionally long part protrudes deeply into the resin material of the support frame and/or the central cylinder. 2. The fluid filter according to claim 1, wherein the long portion is compressed and has a thinner wall thickness.