JP2001050409A - Valve element and filter device using the valve element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent center annular parts from engaging with each other even if a plurality of valve elements are overlapped, solve the shortage of supply, and improve production efficiency by arranging ribs on the center annular part, in the valve elements provided with the center annular part having a cross section shape expanded to one side of a thickness direction, and a lip part enlarged to a radial direction outside. SOLUTION: A check valve 20 is formed by molding an elastic body such as rubber in a ring shape. It is provided with a center annular part 21 having a cross section shape expanded to one side of a thickness direction, and an umbrella shaped lip part 22 enlarged from the center annular part 21 to a radial direction outside. A plurality of ribs 23 for reinforcing the annular part 21 are formed in a circumferential direction of the annular part 21 at constant clearancas. Since the ribs 23 are protruded to an inside of a wall part 21a of the check valve 20, the rib 2 of an upper stage valve rides over the annular part 21 of a lower stage valve in the case where a plurality of valves 20 are overlapped in a parts supplying device, and it is difficult that the annular parts are engaged with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device used for filtering automobile engine oil and the like, and a valve body thereof.

[0002]

2. Description of the Related Art As shown in FIG. 6, a central annular portion 1 having a cross-sectional shape bulging to one side in a thickness direction is provided as a valve body incorporated in a filter device for engine oil of an automobile.
A check valve 1 made of an elastic material and having an umbrella-shaped lip portion 1b extending radially outward from the center annular portion 1a is known (see, for example, Japanese Patent Application Laid-Open No. H11-19415).

The above-mentioned check valve 1 is supplied to a production line by a parts supply device 2 shown in FIG. FIG.
As shown in (a), the parts supply device 2 has a lip portion 1b.
A mast 3 is inserted through the center of a large number of check valves 1... 1 stacked in the thickness direction with the concave side facing upward, and a lifter 4 for supporting the check valves 1 from below. When the check valve 1 is supplied, FIG.
As shown in (b), the suction head 5 descends toward the mast 2, and in synchronization with this, the lifter 4 rises, and the uppermost check valve 1 is sucked by the suction head 5. afterwards,
The suction head 5 is raised, and the uppermost check valve 1 is pulled out above the mast 3. By repeating this, the check valves 1 are taken out one by one and supplied to the production line.

[0004]

When the check valve is taken out by using the above-described parts supply device, the suction head 5 pushes the check valve 1 in its thickness direction as shown by an arrow P in FIG. One central annular portion 1a may be elastically deformed, and the central annular portions 1a of several check valves 1 from the uppermost check valve 1 may mesh with each other. When the suction head 5 rises in this state, the plurality of check valves 1 are integrally pulled out of the mast 3 and supply failure of the check valves occurs. As a result, the production line is stopped, the production efficiency is reduced, and the increase in the production cost of the filter device is inevitable. Attempts have been made to apply powder to the surface of the check valve to prevent the check valves from meshing with each other. However, the number of steps for applying the powder increases, and the manufacturing cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a valve body capable of preventing meshing between central annular portions when stacked in the thickness direction and preventing defective supply, and a filter device using the valve body.

[0006]

Hereinafter, the present invention will be described. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.

The valve body of the present invention has an elastic material having a central annular portion (21) having a cross-sectional shape bulging to one side in the thickness direction, and a lip (22) extending radially outward from the central annular portion. And a rib (23) is provided on the central annular portion.

According to the present invention, when a plurality of valve bodies are stacked in the thickness direction, the ribs of each valve body overlap with the central annular portions of the adjacent valve bodies, and the engagement of the central annular portions is prevented. Moreover, since the rigidity of the central annular portion is increased by the ribs and elastic deformation of the central annular portion is suppressed, there is no possibility that the central annular portions mesh with each other. Even if they are engaged with each other, since the restoring force against elastic deformation of the central annular portion is increased by providing the ribs, the engagement is easily released. Therefore, even when the parts are supplied to the production line using the parts supply device shown in FIG.

In the valve body according to the present invention, the rib may be provided on an inner periphery or an outer periphery of a wall portion on an outer peripheral side of the central annular portion. A plurality of the ribs may be provided at intervals in a circumferential direction of the central annular portion.

The filter device according to the present invention is provided with a filter element (12), a housing (11) for accommodating the filter element, and a filter for closing the housing. A sealing member (13) provided with an outflow port (13b) for a fluid to be filtered, and an inflow port (13a) for a fluid to be filtered by the filter element on the outer peripheral side of the outflow port; A central annular portion (21) disposed between the housing and the sealing member and having a cross-sectional shape bulging to one side in the thickness direction; and a radially outer portion from the central annular portion so as to close the inflow port from within the housing. A valve body (20) made of an elastic material having a lip portion (22) that extends to the center, and a rib (23) is provided on the central annular portion of the valve body. Characterized in that it has been. ADVANTAGE OF THE INVENTION According to this invention, the supply cost of a valve body in the manufacturing process of a filter apparatus can be prevented and the manufacturing cost of a filter apparatus can be reduced.

[0011]

FIG. 4 shows a cross section of a filter device for engine oil of a motor vehicle constructed as one embodiment of the present invention. In this filter device 10, a filter element 12 is mounted inside a cylindrical housing 11, an opening of the housing 11 is closed by a set plate 13 as a sealing member, and a closure plate 14 welded to the set plate 13. Has a structure in which the outer periphery is fixedly wound around the opening edge of the housing 11. The oil discharged from the engine flows into the dirty side S1 in the housing 11 from the inlets 13a... 13a provided in the set plate 13, passes through the filter element 12 from the outer peripheral side to the inner peripheral side, and is filtered. . The filtered oil is supplied to the inner cylinder 15 through a number of holes 15a.
To the clean side S2, and is returned to the engine from the outlet 13b at the center of the set plate 13.

Inside of the set plate 13 (upper side in the figure)
Is provided with a ring-shaped check valve 20 as a valve element. The check valve 20 is formed by molding an elastic body such as rubber into a ring shape. As shown in FIGS. 1 and 2, a central annular portion 21 having a cross-sectional shape bulging to one side in a thickness direction (vertical direction in FIG. 2), and an umbrella-like shape extending radially outward from the central annular portion 21. And a lip 22. A plurality of ribs 2 for reinforcing the center annular portion 21 are provided on the inner periphery of the wall portion 21a on the outer peripheral side of the center annular portion 21.
3 ... 23 are formed at regular intervals in the circumferential direction of the central annular portion 21. Although the number of ribs 23 is eight in the figure, at least one, and preferably three or more, is sufficient. The reason for providing the ribs 23 will be described later.

When oil flows in from the inflow port 13a, the lip portion 22 rises from the set plate 13 by the pressure of the oil. When the oil pressure falls below a predetermined value, the lip portion 22 is moved around the entire circumference of the set plate 13.
And the inflow port 13a is closed from the inside of the housing 11 to prevent oil from leaking from the inflow port 13a.

The central annular portion 21 of the check valve 20
End plate 1 covering one end of filter element 12
6 is fitted with the annular projection 16a at the center. Annular projection 16a
One end of the inner cylinder 15 is fitted on the back side of the. The other end of the filter element 12 is covered with an end plate 17. The arm portions 18a, 18a of the leaf spring 18 fixed to the end plate 17 are pressed against the inner bottom surface 11a of the housing 11, and the repulsive force causes the central annular portion 21 of the check valve 20 to form the annular projection 16a, the set plate 13 and Sandwiched between. As a result, one end of the filter element 12 is sealed, and the flow of oil from the inflow port 13a to the outflow port 13b bypassing the one end of the filter element 12 is prevented. That is, the central annular portion 21 of the check valve 20 also functions as a packing for separating the dirty side S1 and the clean side S2. When the filter element 12 is clogged and the pressure on the dirty side S1 rises, the relief valve device 19 attached to the center of the end plate 17 operates to reduce the pressure on the dirty side S1.
Opened to 2.

The filter device 10 configured as described above
Then, the rib 2 is provided inside the wall 21a of the check valve 20.
When the plurality of check valves 20 are stacked as shown in FIG. 3, the ribs 23 of the upper check valve 20 ride on the central annular portion 21 of the lower check valve 20, and the central annular portion 21 become difficult to mesh with each other. Moreover, since the rigidity of the central annular portion 21 is increased by the ribs 23, the elastic deformation of the central annular portion 21 is suppressed. Therefore, when supplying to the manufacturing line using the parts supply device of FIG. 7, even if the pushing force P from the suction head acts on the central annular portions 21, there is no possibility that the central annular portions 21 mesh with each other. Even if an unexpected pushing force acts and the central annular portions 21 mesh with each other,
By providing the ribs 23, the restoring force against the elastic deformation of the center annular portion 21 is increased, so that when the suction head is raised, the engagement is disengaged by the restoring force, and only the uppermost check valve is reliably taken out. .

The present invention is not limited to the embodiment described above,
It may be implemented in various forms. For example, the rib 23 may be provided on the outer periphery of the wall 21a as shown in FIG. Wall 2
Ribs 23 may be provided on both the inner circumference and the outer circumference of 1a.
The sealing member is not limited to a plate-shaped member such as the set plate 13, but may be a block-shaped member. The sealing member is not limited to winding, and may be fixed to the housing with screws or other fastening means.

The filter device of the present invention is not limited to a device for filtering engine oil of an automobile, but may be configured as a filter device for filtering various fluids. Further, the valve body of the present invention is not limited to the filter device, and can be incorporated in various devices.

[0018]

As described above, according to the present invention, there is no danger that the central annular portions will mesh with each other even if the valve bodies stacked in the thickness direction are pushed in. It comes off easily by the restoring force against the elastic deformation. Therefore, the supply failure of the valve body does not occur, and the production efficiency can be increased to achieve the cost reduction.

[Brief description of the drawings]

FIG. 1 is a partial plan view of a check valve used in a filter device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a view showing a state in which the check valves of FIG. 1 are stacked.

FIG. 4 is a sectional view of a filter device for engine oil of an automobile configured as one embodiment of the present invention.

FIG. 5 is a view showing a modification of FIG. 2;

FIG. 6 is a partially cutaway perspective view of a check valve used in a conventional filter device.

FIG. 7 is a diagram showing an outline of a parts supply device for supplying a check valve to a production line.

FIG. 8 is a diagram showing a state in which a central annular portion of a check valve is engaged.

[Explanation of symbols]

 Reference Signs List 10 filter device 11 housing 12 filter element 13 set plate (sealing member) 13a inflow port 13b outflow port 20 check valve (valve element) 21 central annular portion 21a outer peripheral wall portion of central annular portion 22 lip portion 23 rib

Claims (5)

[Claims] 1. A valve body made of an elastic material having a central annular portion having a cross-sectional shape bulging to one side in a thickness direction and a lip portion extending radially outward from the central annular portion. A valve body provided with a rib. 2. The valve body according to claim 1, wherein the rib is provided on an inner periphery of a wall portion on an outer peripheral side of the center annular portion. 3. The valve element according to claim 1, wherein the rib is provided on an outer periphery of a wall portion on an outer peripheral side of the center annular portion. 4. The valve body according to claim 1, wherein a plurality of the ribs are provided at intervals in a circumferential direction of the central annular portion. 5. A filter element, a housing accommodating the filter element, and a housing provided so as to close the housing, and an outlet of a fluid filtered by the filter element at a center portion,
A sealing member provided with an inlet for a fluid to be filtered by the filter element on the outer peripheral side of the outlet, and disposed between the filter element and the sealing member; A valve member made of an elastic material having a central annular portion having an expanded cross-sectional shape, and a lip portion extending radially outward from the central annular portion so as to close the inflow port from within the housing; A fluid filter device for a vehicle, characterized in that a rib is provided on the central annular portion.