JPH0544204U - Filter mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents the outer edge of the filter member from being exposed to the outside of the frame without paying special attention when setting the filter member, and ensures the peripheral edge of the filter member. It is embedded in the frame. [Structure] A mesh member 12 is inserted into a mold constituted by a main mold 16 and a lid mold 18 to mold a frame body 10, and an outer edge portion of the mesh member 12 is embedded in the frame body 10. Here, the outer edge portion of the mesh member 12 is bent by the protrusion 32 of the convex portion 30 of the lid mold 18 by mold clamping,
The bent portion 14 is formed. And the mesh member 1
The frame body 10 is molded in a state where the outer edge portion of 2 is bent.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a filter attachment structure for attaching a filter member to a frame.

[0002]

[Prior Art]

 For example, a filter is attached to an oil supply valve that is arranged in a transmission of an automobile and supplies lubricating oil. In the filter, a mesh member is used as the filter member, and the mesh member is attached to the frame.

When attaching the mesh member, as shown in FIG. 3, conventionally, a circular mesh member is inserted into a mold to form a tubular frame body so that the outer edge portion of the mesh member is formed. The structure is embedded in the frame.

Here, as shown in FIGS. 3 and 4, the mold used in the molding is integrally connected to the outer mold 52 corresponding to the outer peripheral surface of the frame body 50 and the outer mold 52 at the bottom. The inner die 54 corresponding to the rest of the inner peripheral surface of the frame body except for the upper end portion, and the inner peripheral surface of the frame body 50 corresponding to the removed upper end portion and the frame body 50. And a lid type 56 corresponding to the upper end surface of the. In this mold, as shown in FIG. 3, a mesh member 60 is placed on the top surface 58 of the inner mold 54 and the outer edge of the mesh member 60 is set so as to extend into the cavity 62. The lid mold 56 is covered from above to perform mold clamping, and then a molding material such as resin is injected to mold the frame body 50.

[0005]

[Problems to be solved by the device]

 By the way, in the above-described conventional mesh mounting structure, the mesh member 60 has an outer diameter of the mesh member 60 so that the outer edge portion of the mesh member 60 does not contact the inner peripheral surface of the outer mold 52 in the mold. The size is smaller than the inner diameter of the outer mold 52, so that the clearances A and B (see FIG. 3) can be secured between the outer mold 52 and the inner peripheral surface.

However, even if the outer diameter of the mesh member 60 is formed smaller than the inner diameter of the outer mold 52 in order to secure the clearance, the mesh member 60 does not contact the top surface 58 of the inner mold 54. If not set in the center, the clearances A and B will be A ≠ B, and further, either A or B will be 0, and the outer edge of the mesh member 60 will become the inner peripheral surface of the outer mold 52. Abut. It is preferable that the outer edge portion of the mesh member 60 is in contact with the inner peripheral surface of the outer die 52 after the molding, because the outer edge portion of the mesh member 60 is exposed to the outside of the frame body 50 and causes fraying. is not.

To avoid this, there has been no suitable solution other than carefully setting the mesh member 60 at the center of the top surface 58 of the inner mold 54.

In view of the above facts, the present invention can prevent the outer edge portion of the filter member from being exposed to the outside of the frame body without paying particular attention when setting the filter member, and It is an object of the present invention to provide a filter mounting structure capable of reliably embedding the outer edge portion in a frame.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, in a filter mounting structure in which a filter member is attached to a frame, when the filter member is inserted into a mold to form a frame, the outer edge of the filter member is bent by clamping. We propose a filter mounting structure that is characterized by the following features.

[0010]

[Action]

 With the above configuration, even when the outer edge portion of the filter member is in contact with the inner surface of the mold when the filter member is set, the outer edge portion of the filter member is bent by the mold clamping during the mold clamping and is separated from the inner surface of the mold. Extend into the cavity. Molding is performed in this state, and after molding, the outer edge portion of the filter member is not exposed to the outside of the frame body, and there is no fear of fraying.

Therefore, it is possible to prevent the outer edge portion of the filter member from being exposed to the outside of the frame body in the outer diameter direction of the filter member without paying particular attention when setting the filter member, and the outer edge portion of the filter member is prevented. Can be reliably embedded in the frame.

[0012]

【Example】

 An embodiment of the filter mounting structure according to the present invention will be described in detail with reference to FIGS.

As shown in FIG. 1, the frame 10 of the filter is molded into a cylindrical shape from a molding material such as resin. In addition, the mesh member 12 that forms the filter member is made of stainless steel, has a flat plate shape and a circular shape having a diameter smaller than the outer diameter of the frame body 10, and is inserted into the mold to form the frame body 10. The outer edge portion of the mesh member 12 is embedded in the upper end portion of the frame body 10.

Here, the peripheral portion of the mesh member 12 is bent from the position shown by the two-dot chain line to the position shown by the solid line by mold clamping to form a bent portion 14, which is integrally formed with the frame body 10. ing.

The mold used for molding is composed of a main mold 16 and a lid mold 18, as shown in FIGS.

The main mold 16 corresponds to the outer mold 20 corresponding to the outer peripheral surface of the frame body 10 and the remaining part of the inner peripheral surface of the frame body 10 excluding the upper end portion, and is integrated with the outer mold die 20 at the bottom portion. And an inner mold 22 corresponding to the lower end surface of the frame body 10, a flange 24 is provided at the upper end of the outer mold 20, and the inner mold 22 is projected upward inside the outer mold 20. It is said that.

The lid mold 18 includes a flange 26 that is fitted to the flange 24. From the center of the flange 26, a columnar convex portion 30 that presses the flat surface portion of the mesh member 12 is provided so as to correspond to the top surface 28 of the inner mold 22. On the outer peripheral portion of the convex portion 30, four protrusions 32 that protrude in the radial direction are formed at equal angular intervals. The protrusion 32 extends toward the inner peripheral surface of the outer mold 20, and the lower surface of the protrusion 32 gradually moves toward the tip of the inner peripheral surface of the outer mold 20 and the outer peripheral surface of the inner mold 22 inside the cavity 34. Is formed so as to extend toward the bottom of the.

Next, a molding procedure of a filter to which the filter mounting structure according to this embodiment is applied will be described.

First, at a height position of the top surface 28 of the inner mold 22, the outer diameter of the top surface 28 of the inner mold 22 is larger than the outer diameter of the projection 32 of the protrusion 30 of the lid mold 18 and extends further outward. After placing the mesh member 12 smaller than the inner diameter of the outer mold 20 on the top surface 28 of the inner mold 22, the mesh member 12 is set between the top surface 28 of the inner mold 22 and the convex portion 30 of the lid mold 18. The lid mold 18 is covered so as to sandwich 12 between them. Then, by clamping the flange 24 of the main mold 16 and the flange 26 of the lid mold 18, the mold clamping is performed. By this mold clamping, the protrusion 32 of the lid mold 18 presses the outer edge portion of the mesh member 12 and bends it into the cavity 34. As a result, the bent portion 14 is formed.

After that, a molding material made of resin is injected into the cavity 34 to mold the frame 10. In the molded product that is released from the mold after molding, the molding material extends to the central portion of the mesh member 12 that is interposed between the top surface 28 of the inner mold 22 and the convex portion 30 of the lid mold 18. Since this is not true, the central portion of the mesh member 12 is exposed, and the bent portion 14 of the mesh member 12 extending into the cavity 34 is embedded in the upper end portion of the frame body 10. At the upper end of the frame body 10, a concave portion 36 is formed at a portion corresponding to the protrusion 32 of the convex portion 30 of the lid mold 18. In the concave portion 36, among the bent portions 14 of the mesh member 12, The remaining portion of the lid mold 18 excluding the portion in contact with the lower surface of the protrusion 32 is embedded in the upper end portion of the frame body 10.

Here, since the outer edge portion of the mesh member 12 is bent by the mold clamping, as shown in FIG. 1, the outer diameter dimension LI of the mesh member 12 at the time of mold clamping is the mesh member 12 at the time of setting. Is smaller than the outer diameter dimension L2. Therefore, even when the peripheral edge of the mesh member 12 is in contact with the inner peripheral surface of the outer die 20 when the mesh member 12 is set, the outer edge portion of the mesh member 12 is separated from the inner peripheral surface of the outer die 20 during mold clamping. Separate. As described above, the die molding is performed with the clearance secured between the outer edge portion of the mesh member 12 and the inner peripheral surface of the outer die 20. As a result, the outer edge portion of the mesh member 12 is not exposed on the outer portion of the frame body 10, and there is no fear of fraying.

For this reason, it is possible to prevent the outer edge of the mesh member 12 from being exposed to the outside of the frame body 10 without paying particular attention when setting the mesh member 12, and to secure the outer edge of the mesh member 12 securely. It can be embedded in the frame body 10.

Although the present invention has been described with reference to the above embodiments, the present invention is not limited to the above embodiments, and various modifications can be made.

For example, in the above embodiment, the filter mounting structure has been described in which the mesh member has a circular shape and the frame has a cylindrical shape. However, the frame 10 does not have to have a cylindrical shape. The mesh member 12 may have a square shape or the like, and the mesh member 12 may have a square shape instead of a circular shape, and various shapes are possible depending on the application.

Further, in the above-described embodiment, the projection 32 of the convex portion 30 of the lid mold 18 bends the outer edge portion of the mesh member 12 downward, but the invention is not limited to this. It is also possible to form a protrusion that is gradually inclined upward toward the tip of the outer edge of 28 so that the outer edge of the mesh member 12 is bent upward when the mold is clamped.

In addition, although the mesh member 12 is used as the filter member in the above embodiment, other members such as a soft film-like member can be applied.

[0027]

[Effect of the device]

 As described above, in the filter mounting structure according to the present invention, it is possible to prevent the outer edge of the filter member from being exposed to the outside of the frame without paying special attention when setting the filter member. Is securely embedded in the frame.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of a filter mounting structure according to the present invention in a mold.

FIG. 2 is a perspective view showing a state before assembly of a mold used to obtain the filter mounting structure according to the present embodiment together with a filter member.

FIG. 3 is a vertical sectional view showing a conventional filter mounting structure in a mold.

FIG. 4 is a perspective view showing a state before assembly of a mold used to obtain a conventional filter mounting structure together with a filter member.

[Explanation of symbols]

 10 frame body 12 mesh member (filter member) 14 bent portion

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location F16H 57/04 F 9031-3J

Claims (1)

[Scope of utility model registration request] 1. A filter mounting structure for mounting a filter member to a frame, wherein an outer edge portion of the filter member is bent by mold clamping when the frame is molded by inserting the filter member into a mold. Characteristic filter mounting structure.