JPH0138528B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluid cleaning filter element assembly used in automobiles and the like.

[Conventional technology]

A previously known filter element for cleaning fluids, as disclosed in British Patent No. 1,012,534, has a plurality of planar ring-shaped cross-sectional corrugations extending outwardly.

[Problem to be solved by the invention]

However, the above-mentioned conventionally known devices do not provide a simple support structure for reliably supporting the over-element.

[Means to solve the problem]

The present invention has been devised in view of the above points, and includes a ring-shaped over-element having a large number of planar ring-shaped cross-sectional corrugated portions extending outward, and an end on which the over-element is placed. a plate, and the end plate has first and second plates located at the innermost and outermost sides of the over-element and fixing the innermost and outermost cross-sectional corrugated portions, respectively. A technical means is adopted in which a second fixing part and a thread-like connecting part located below the over-element and connecting the two fixing parts to each other are provided.

〔Example〕

Hereinafter, the present invention will be explained by way of examples with reference to the accompanying drawings.

A material 1 used in the present invention is shown in FIG.
This material is fan-shaped, with an arc 1-1' at one end.
There are multiple fold lines m between the arc v-v′ at the other end
-m', n-n'...u-u' are attached. here,
Adjacent arcs n-n' and o-o', p-p' and q-q',
Assuming that the distances between r-r' and s-s', t-t' and u-u' are the same, and the adjacent circular arcs m-m' and n-n', o-o' and p-
The intervals between p', q-q' and r-r', and s-s' and t-t' are set to be larger than the previous circular arc interval and the same interval as each other. Also, the distance between the arcs 1-1' and m-m' is made larger than the distance between the arcs n-n' and o-o', and the arc u-
The distance between u' and vv' is made larger than the distance between arcs mm' and nn'. The material 1 is bent along these creases so that the longitudinal cross section becomes a continuous waveform, with the arc 1-1' on the inner periphery and the arc v
- When curved so that v' becomes the outer periphery and the two side edges of the material 1, that is, the abutting parts, are joined to each other by the joint part 2, a large number of parts continuously extending outward from the center as shown in Fig. 2 is formed. This results in a ring-shaped over-element 3 having a substantially truncated conical cross-section having a planar ring-shaped cross-sectional corrugated portion 3a.

An end plate 4 is shown in FIGS. 3 and 4, which is located on the fluid outlet side of the filter element 3, that is, on the lower side, and on which the filter element 3 is placed. It is made of easy-to-use material and is integrally molded as shown in the figure. The end plate 4 is composed of a circular flange part 5 which constitutes a second fixing part, a central boss part 7 which constitutes a first fixing part, and a striped web 6 which interconnects the two parts. An annular upright wall 8 connected in the circumferential direction protrudes upward from the flange portion 5, and a ring-shaped groove 9 is formed inside the upright wall 8 along with a boss. A similar ring-shaped groove 10 is formed along the outer periphery of the portion 7. As can be seen in FIG. 4, in these grooves 9 and 10, among the many planar ring-shaped cross-sectional corrugated portions 3a of the above-mentioned over-element 3, the outermost periphery,
The lower portions of the cross-sectional corrugated portions 3a at the innermost periphery are placed respectively, and adhesive is poured thereto for both adhesive fixation and sealing.

Overelement assembly 1 made in this way
1 is mounted inside the air cleaner case of an automobile, for example, as shown in FIG. As can be understood from FIG. 5, the cross-sectional corrugated portion 3a in the region excluding the cross-sectional corrugated portion fixed to the grooves 9 and 10 and the portion facing the web 6 is directly exposed around the over-element 3, and has a resistance to ventilation. is decreasing. The over-element assembly 11 is placed on a case 13 having a perforated support 12, and then the inlet 1
4, the outer circumferential edge of the flange portion 5 of the end plate 4 is sandwiched between the gasket 16 on the outer circumferential edge of the case 13 and the gasket 17 on the outer circumferential lower edge of the cap 15, and the carburetor (not shown) is inserted. The stud bolt 18 attached to the
through the through hole in the center of the rubber insert 19.
It is assembled by tightening the nut 20 through.

By the way, as shown by the arrow, air passes from the inlet 14 of the cap 15 through the over-element assembly 11 of the present invention, passes there, passes through the multi-hole support 12, the opening 21 in the center of the case, and then flows into the carburetor (not shown). ). At this time, the outer periphery of the over-element assembly 11 is connected to the gasket 1.
6 and 17, and the inner and outer peripheries of the filter element 3 are also sealed at the grooves 9 and 10, so that the clean side and dirty side within the air cleaner are completely isolated. Also,
The over-element is firmly supported by a relatively rigid end plate 4, which improves its durability against vibrations.

FIG. 6 shows another embodiment of the present invention, in which the cross-sectional shape of the inner and outer grooves 9A and 10A of the end plate 4 is
It has a V-shaped cross section in accordance with the inclination of the cross-sectional waveform portion 3a at the innermost and outermost peripheral portions.

FIG. 7 shows an embodiment in which the over-element 3 is hermetically attached to the end plate 4A by mechanical means other than adhesive. , is provided with a flange portion 33 integrally formed with annular gasket elastic bodies 30, 31 along its periphery, and these gasket elastic bodies 30, 31 are attached to the end plate 4A.
The flange portion 5A and the outer periphery of the boss portion 7A are hermetically connected via a rivet 32 and plates 54 and 55, respectively.

In the above embodiments, the basic shape of the material was fan-shaped, but by changing the basic shape of the material, over-elements having various shapes can be obtained. Further, by using creases of other shapes and dimensions instead of the arcuate creases, it is possible to obtain over-elements with different shapes, typical examples of which are shown below.

FIG. 8 shows a piece of wood 40 that is fan-shaped but has fold lines different from those described above.
Now we have multiple arcs with different radii from a common center 0.
There are creases at a ₂ −a ₃ , b ₂ —b ₃ ……j ₂ —j ₃ , k ₂ —k ₃ , and there are folds on both sides of these creases.
a ₁ ― _{a 2} , a ₃ ― a ₄ ; b ₁ ― b ₂ , b ₃ ― b ₄ ;...k ₁ ― k ₂ ,
There is a straight crease called k ₃ - k ₄ . When the material 40 is bent and curved along these creases, a U-shaped over-element half piece 41 as shown in FIG. 9 is formed. When similar half pieces 41A are butt-joined, a substantially oval over-element 42 as shown in FIG. 10 is obtained. This is assembled to an end plate 44 having a similar structure having an oval planar shape as shown in FIG.
A similar over-element assembly can be obtained by sealingly bonding at 5 and 46. In this example, a plurality of webs 6 are provided. In addition, in FIG. 10, the reference numeral 42A indicates a large number of ring-shaped cross-sectional corrugated portions.

The material 50 shown in FIG. 12 has different centers,
Arcs 1-1', m-m', ... with different radii
It has fold lines of s-s', and when it is bent along these fold lines and then curved to join both side edges to each other, it becomes an eccentric circular over-element 51 as shown in Fig. 13, and this is attached. The end plate 52 has a boss portion 5 as shown in FIG.
3 is eccentric. The other structure of this end plate 52 is the same as that shown in FIGS. 3 and 11, and the same effects are produced. In addition, 54,
Reference numeral 55 indicates a groove for receiving the cross-sectional corrugated portion of the over-element.

In the embodiments shown in FIGS. 3, 6, 11, and 14, grooves are used as a means for continuously receiving and fixing the cross-sectional corrugated portions at the innermost and outermost peripheries of the over-element. Although it is provided on the end plate, it is not limited to the groove, for example, a step portion may be formed on the end plate at a position corresponding to the groove,
Of course, the cross-sectional corrugated portions at the innermost and outermost portions of the over-element may be fixed to the side surface of the step portion.

Furthermore, in the embodiments shown in the figures above, the web 6, which serves as a connecting part that connects the central boss part 7, which constitutes an example of the fixing part, and the upright wall 8, is integrally molded thereon, but it may be bonded as a separate part. It goes without saying that the connecting portion may be fixed, and that various shapes can be applied to the connecting portion.

〔Effect of the invention〕

As described above in detail, the present invention includes a ring-shaped over-element having a large number of planar ring-shaped cross-sectional corrugated portions extending outward, and an end plate on which the over-element is placed. ,
The end plate has first and second fixing parts located at the innermost and outermost sides of the over-element and fixing the innermost and outermost corrugated sections, respectively. Since the configuration is such that a striped connecting part is provided below the over-element and connects both the fixing parts to each other, the over-element can be supported by the end plate, and when the over-element is used alone. Compared to,
The presence of the end plate is advantageous in terms of strength, and in addition, the supporting structure of the over-element is simple as described above, and does not require large-scale equipment compared to, for example, the case where it is integrated into the over-element by resin molding. , it is also advantageous in terms of cost.

Further, since the fixing parts of the end plates are connected to each other by the linear connecting parts, the rigidity of the end plates themselves is increased, and the effect of protecting the over-element by the end plates can be increased. In addition,
Since the connecting portion of the end plate has a linear shape, it is possible to counteract the increase in fluid passage resistance caused by fixing the over-element to the end plate.

[Brief explanation of drawings]

Fig. 1 is a plan view of the material according to the present invention, Fig. 2 is a partially cutaway perspective view of the over-element made from the material shown in Fig. 1, and Fig. 3 is an end plate to which the over-element of Fig. 2 is attached. 4 is a sectional view showing an embodiment of the over-element assembly of the present invention, which is composed of the over-element shown in FIG. 2 and the end plate shown in FIG. 3; FIG. 5 is a partially cut-away perspective view; FIG. FIG. 6 is a sectional view showing another embodiment of the end plate; FIG. 7 is a sectional view showing another embodiment of the present invention; FIG. 9 is a plan view showing another form of the material according to the present invention; FIG. 9 is a plan view showing a half element made of the material shown in FIG. 8;
Figure 0 is a partially cut-away perspective view of the over-element made by joining another half-element of the same shape to the half-piece in Figure 9, and Figure 11 is a partially cut-away view of the end plate to which the over-element shown in Figure 10 is attached. Perspective view,
Fig. 12 is a plan view showing another material, Fig. 13 is a plan view of the over-element made from the material shown in Fig. 12, and Fig. 14 is a partially broken perspective view of the end plate on which the over-element of Fig. 13 is assembled. It is a diagram. 3... Overelement, 3a... Cross-sectional corrugated part,
4... End plate, 5... Flange portion, 7...
...Boss part, 9, 10...Groove, 11...Over element assembly.

Claims (1)

[Scope of Claims] 1. A ring-shaped over-element having a large number of planar ring-shaped cross-sectionally corrugated portions extending outward, and an end plate on which the over-element is placed, the end plate being arranged to first and second fixing parts located at the innermost and outermost circumferential sides of the element and fixing the innermost circumferential cross-sectional waveform part and the outermost circumferential cross-sectional waveform part, respectively; An over-element assembly characterized in that it has a linear connecting part that is positioned and connects both of the fixing parts to each other. 2. The over-element assembly according to claim 1, wherein a plurality of the connecting portions are arranged. 3. The cross-sectional corrugated portion of the end plate, excluding the innermost and outermost peripheral portions fixed to the fixing portion and the portion facing the connecting portion, is directly exposed around the over-element. A multi-element assembly according to claim 1 or 2, characterized in that: 4. The multi-element assembly according to any one of claims 1 to 3, wherein the fixing part of the end plate and the connecting part are integrally formed by resin molding. Three-dimensional. 5 The fixing portion of the end plate includes circumferential grooves provided at positions corresponding to the cross-sectional corrugated portions of the outermost and innermost peripheries of the over-element, and the grooves of these fixing portions include the outermost circumferential grooves of the over-element. The lower part of each cross-sectional corrugated part of the outer peripheral part and the innermost peripheral part is inserted and bonded and fixed with an adhesive, according to any one of claims 1 to 4. Overelement assembly. 6. The cross-sectional corrugated portions at the outermost and innermost peripheries of the over-element include elastic bodies provided along their peripheries, and are capable of being connected to the fixed portion of the end plate via the elastic bodies. 5. The over-element assembly according to claim 1, wherein the over-element assembly is fixed. 7. The over-element bends a plate-shaped material having one end short and the other end long into a wave-shaped cross section between the one end and the other end, and bends the bent material with the one end inside and the other end The over-element assembly according to any one of claims 1 to 6, characterized in that the over-element assembly is configured by being curved into a planar ring shape with the outer side and the curved ends thereof being joined to each other. Three-dimensional. 8. The over-element assembly according to any one of claims 1 to 7, wherein the end plate is located on the fluid outlet side of the over-element.