JPH0569563B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a filter element that is conveniently used, for example, in a lubricating oil filter for an internal combustion engine.

(Prior art) As this kind of conventionally known superelements,
For example, there is one described in US Pat. No. 2,768,752. This is made of a material having a large number of corrugated sections in cross section, with the corrugated sections being in contact with each other to form a ring shape, and a fluid passing between the contact sections of the corrugated sections. This is a so-called surface filter method that removes dust, sludge, etc. from the fluid while the fluid passes between these contact parts.

In the conventional type, the length of the contact part of the corrugated part, that is, the length of the entire ring-shaped part in the radial direction, must be increased in order to effectively clean the unused fluid. There is a risk that the strength of the parts may decrease or the parts may become deformed.

Furthermore, although it is large as a whole, there is also a problem that the excess area is small.

(Object of the Invention) The present invention attempts to eliminate the above-mentioned problems by employing an epoch-making structure that is completely different from the over-element of the conventional example.

(Examples) The present invention will be explained in detail below using specific examples. In FIGS. 1 to 4, a material 1 is provided with a plurality of wave-shaped portions 1a formed by bending itself. This material 1
As can be seen particularly clearly in FIG. 1, the bent portions 1b of the plurality of wave-shaped portions 1a are made to face each other, and spaces 2a and 2b are provided between the opposing faces, and the spaces 2a , 2b, and has a ring-like structure as a whole. In addition, the material 1 is
Both ends are joined at point A in FIG. 1 with an adhesive (for example, a polyamide hot-melt resin adhesive).

In the plurality of opposing portions of the ring-shaped member 9 configured as described above, the voids 2a formed in every other plurality of opposing portions 3a communicate with the inner space 4 of the ring-shaped member 10. That is, in the opposing portion 3a, since the opposing portions of the bent portions 1b of the wave-shaped portion 1a are separated as indicated by x in the figure, all the spaces 2a in the opposing portion 3a communicate with each other, and the ring-shaped member It communicates with the inner space 4 of 9. Further, the voids 2b in the other plurality of opposing portions 3b of the ring-shaped member 9 are isolated so as not to communicate with the inner space 4 of the member 9. That is, in this facing portion 3b, since the innermost portions of the mutually opposing waveform shapes 1a are integrally communicated, the connecting portion 5 does not communicate with the inner space 4 of the material 9.

Both ends of the ring-shaped member 9 are closed with a resin adhesive layer 6 as shown in FIGS. 2 and 3 within the range indicated by B in FIG. This resin adhesive is made of, for example, a polyamide-based hot melt type material.

In this manner, since the area indicated by B in FIG. 1 is closed by the resin adhesive layer 6, the void space 2b opens in the form of a slit at both ends of the ring-shaped member. This slit-shaped opening 8
In this embodiment, as shown in FIG. 3, six are formed. Further, following this opening 8, six slit-shaped openings Z are similarly formed on the outer surface of the material 9 between the opposing parts 3a and 3b in FIG. Incidentally, the portion closed with the resin adhesive layer 6 becomes a bag-like shape 7 as clearly shown in FIGS. 4 and 5.

By the way, the above material 1 is a strip material 1' shown in FIG. 6 and FIG. 7, which is a partially enlarged view of FIG. 6.
(for example, made of paper) is bent along a plurality of fold lines b shown therein. The interval between the folding lines b is continuously changed (see Fig. 7), and the folding line b is applied to the material 1' by repeating the continuously changing areas in a line-symmetrical manner. There is. Therefore, by bending this material 1' along fold line b and joining both ends, material 1 shown in FIG. 1 is obtained. FIG. 8 shows the correspondence of fold line positions when the material 1' in FIG. 7 is bent.

Next, a fluid flow path for the over-element configured as described above will be explained. For example, when the unused fluid flows from below the filter element, the fluid flows into the cavity 2b through the plurality of slit-shaped openings 8, and connects the cavity 2b and the cavity 2a of the bag-like part 7. It passes through the isolated corrugated portion 1a and reaches the cavity 2a of the bag-like portion 7. The fluid that has flowed into the cavity 2a of the bag-shaped part 7 passes through the opening of the cavity 2a, that is, the opposing gap x of the bent part 1b of the corrugated part 1a, and flows into the adjacent cavity 2a, while forming the material 9. It flows out into the inner space 4. Incidentally, when the fluid passes through the corrugated portion 1a, it passes through the corrugated portion 1a and becomes clean.

Application examples of the overelement having such an overaction will be described below. First, let's talk about the lubricating oil filter for internal combustion engines. In Fig. 9,
The over-element 10 of the present invention is housed in a metal container 12 with a perforated metal cylinder 11 fixed therein. The open end of the container 12 has a screw hole 13a in the center and a plurality of openings 13b around the outer circumference.
A ring-shaped metal end plate 13 is disposed, and a thin ring plate 18 welded and fixed to the end plate 13 is locked around the opening end of the container 12.
In the figure, 14 is a rubber check valve, 15 is a spring, 16 is a metal end plate fixed to the cylinder 11,
17 indicates a rubber gasket.

In this filter, lubricating oil enters the container 12 by pushing open the check valve 14 from the opening 13b as shown by the arrow in the figure, passes below and on the sides of the filter element 10, and is then purified. It returns to the internal combustion engine through the screw hole 13a as shown in FIG. Note that oil enters the element 10 from below through the slit 8 and from the side through the slit Z.

FIG. 10 shows an example applied to an air cleaner for an internal combustion engine. That is, the over-element 18 is held between a case 19 made of synthetic resin and a cap 20 made of the same with rubber gaskets 21 and 22 interposed therebetween. In addition, this case 19 and cap 20
are connected to each other by a clamp (not shown). In the figure, 23 indicates a gasket, and 24 indicates an inlet.

The present invention can be modified in various ways as described below.

(1) According to FIGS. 2 and 3, the slit-shaped openings 8 are formed at the same positions at both ends of the ring-shaped member 9, but it is also possible to shift the positions of the openings 8 at both ends, for example. Alternatively, the slit-shaped opening 8 may be formed at one end of the ring-shaped member 9 and the entire surface of the other end may be closed so that the slit-shaped opening 8 is not formed. Furthermore, the number of slit-shaped openings 8 may be arbitrary.

(2) The curved shape of the corrugated portion in material 9 is the first
Of course, it may be as shown in FIGS. 1 to 15.

(3) Material 9 is made by continuously bending a piece of material 1',
Although the entire structure is made into a ring, a ring-shaped material may be formed by, for example, using the blocks B shown in FIG. 1 as one unit and joining them with an adhesive.

(4) The element structure is not limited to a circular shape, but may be formed into an arbitrary ring shape as shown in Fig. 16.

(5) In the embodiment shown in FIG. 1, the number of superelements is 12
Although shown as a rectangular shape, the shape is not limited to a dodecagonal shape, and a polygonal shape such as a tridecagonal shape is possible.
Incidentally, if it is formed into a bent shape as shown in FIG. 11, it can be made into a circular shape.

(6) A flat shaped part may be arranged between opposing wave shaped parts.

(Effects) As detailed above, according to the present invention, the following effects are achieved.

(a) Bag-shaped portions with both ends closed are formed at multiple locations on the excess element, and adjacent bent portions of the multiple corrugated portions are placed opposite each other, resulting in high overall element strength and reduced excess volume. Accordingly, the maximum excess area can be secured.

(b) The whole of the plurality of wave-shaped sections can be used as a fluid overflow portion, and therefore a large overflow area can be obtained.

(c) With the above (a) and (b), it is possible to achieve a significant reduction in size compared to the conventional over-element.

(d) Since both ends of the over-element are closed so that a slit-like opening is formed at at least one of the ends, the slit-like opening simplifies the closing operation and provides an inexpensive over-element. can do. In addition, (e) since the slit-shaped opening is left and the rest are closed, the strength of the corrugated portion is further improved, and the strength as a whole is improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a ring-shaped member for constructing the over-element of the present invention, FIG. 2 is a perspective view showing an embodiment of the present invention, FIG. 3 is a plan view of FIG. 2, and FIG. The figure is a partially broken perspective view taken along the - line in Fig. 2, Fig. 5 is a sectional view taken along the - line in Fig. 4, and Fig. 6 shows the starting material for constructing the ring-shaped material in Fig. 1. 7 is an expanded view showing a part of FIG. 6, FIG. 8 is a plan view showing the material in FIG. 7 in a bent state, FIG. 9 and 1.
FIG. 0 is a sectional view showing an application example of the present invention, and FIGS. 11 to 16 are plan views showing other embodiments of the present invention. 1a... Waveform shaped part, 2a, 2b... Blank space, 4
...Inner space, 6...Resin adhesive layer, 7...Bag-shaped portion, 8...Opening of slit-shaped portion, 9...Ring-shaped material.

Claims (1)

[Scope of Claims] 1 A plurality of wave-shaped parts are arranged in a ring shape adjacent to each other and facing each other to constitute a ring-shaped member as a whole, and both ends of the ring-shaped member are connected to the ends of the wave-shaped parts. A part of the void formed in the opposing portion is closed to open in a slit shape, and the void in the wavy-shaped opposing portion, which has become bag-like by closing, is connected to the inner space of the ring-shaped member. At the same time, the slit-shaped opening in the opposite part of the wavy-shaped part is opened into the outer space of the ring-shaped member, and the bag is passed through the wavy-shaped part through the slit-shaped opening. A flow element that allows fluid to flow into the bag-shaped cavity and flow out from the opening of the bag-shaped cavity into the inner space of the ring-shaped member. 2. The over-element according to claim 1, wherein the slit-shaped openings are formed at the same positions on both ends of the ring-shaped member. 3. The over-element according to claim 1 or 2, wherein the closing portion is formed of a resin adhesive.