KR20120028440A

KR20120028440A - Inhibitor switch and insert injection mold

Info

Publication number: KR20120028440A
Application number: KR1020100090275A
Authority: KR
Inventors: 송은희
Original assignee: 대성전기공업 주식회사
Priority date: 2010-09-15
Filing date: 2010-09-15
Publication date: 2012-03-23

Abstract

PURPOSE: An inhibitor switch and an insert injection molding body are provided to prevent the generation of air leak by improving cohesive power between a press terminal and a molten resin. CONSTITUTION: A part of top and bottom surface of a press terminal(10) of metal materials is formed into an uneven surface. A molten resin is contacted to the uneven surface of the press terminal and is molded. The press terminal comprises one or more connection terminal parts(11) which are extended from the inner side of an insert injection molding body and is projected to outside. The uneven surface compartmentalizes inside and outside of the insert injection molding body. The insert injection molding body molds pressing insert materials into one body.

Description

Inhibitor switch and insert injection molding {INHIBITOR SWITCH AND INSERT INJECTION MOLD}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inhibitor switch mounted in an engine room of an automobile and responsible for an electrical signal transmission function of a gear shift, and a general insert injection molding having the same manufacturing method.

The conventional inhibitor switch is manufactured in the form of an insert injection molding molded integrally with the press terminal by injection of molten resin in a state where a metal press terminal is inserted into a mold.

In this case, the press terminal has a weak adhesive force with the solidified molten resin in the insert injection molding forming the inhibitor switch, so that the parts interviewed with each other are separated, causing a gap.

In particular, the inhibitor switch has a connection end portion in which the press terminal protrudes to the outside of the insert injection molding, and an air leak occurs between the external surface of the insert injection molding and the connection end, thereby testing reliability. As it was judged as bad in time, it has been a defect factor in mass production.

SUMMARY OF THE INVENTION An object of the present invention is to provide an inhibitor switch capable of preventing the occurrence of air leak in the molded inhibitor switch by improving the adhesion between the molten resin and the press terminal during injection molding.

In addition, in general, when the press insert of the metal material is molded integrally with the molten resin to provide an insert injection molding that can achieve a quality improvement of the product by improving the mutual bonding force.

In order to achieve the above object, the present invention is an inhibitor switch made of an insert injection molding molded integrally with the press terminal by the injection of molten resin in a state where the metal press terminal is inserted into the mold, the press terminal is At least a portion of the upper and lower surfaces made of a flat plate is formed with an uneven surface provides an inhibitor switch, characterized in that the molten resin is formed integrally in contact with the surface on which the uneven surface is formed.

Here, the press terminal has at least one connection end extending from the inside of the insert injection molding constituting the inhibitor switch to protrude to the outside, the uneven surface is characterized in that the connection end separates the inside and the outside of the insert injection molding It may be formed in the boundary region.

In addition, in order to achieve the above object, the present invention, in the insert injection molding molded in one piece with the press insert by the injection of molten resin in a state where the metal insert is inserted into the mold, the press insert is At least a portion of the upper and lower surfaces made of a flat plate is formed of an uneven surface provides an insert injection molding, characterized in that the molten resin is molded integrally in contact with the surface on which the uneven surface is formed.

Here, the press insert has one or more protruding ends extending from the inside of the insert injection molding to protrude outwards, and the uneven surface is formed at a boundary area where the protruding ends separate the inside and the outside of the insert injection molding. You can also

According to the inhibitor switch and the insert injection molding according to the present invention as described above, by forming a concave-convex surface on the surface of the press terminal or the press insert of the metal material can increase the bonding force between the molten resin and the gap between the two, Prevention and thus an improvement in product quality can be achieved.

1 is a perspective view of a press terminal as one component of an inhibitor switch according to an embodiment of the present invention;
2 is a perspective view of a primary injection molded product integrally with the press terminal of FIG. 1 as one component of an inhibitor switch according to an exemplary embodiment of the present invention;
3 is a perspective view of a primary injection molding formed by integrally molding the press terminal of FIG. 1 and the primary injection molding of FIG.
4 is a partially enlarged perspective view of a main part of the primary injection molding of FIG. 3;
FIG. 5 is a partially enlarged perspective view illustrating a secondary injection molded product, that is, an inhibitor switch according to an embodiment of the present invention, formed by inserting the primary injection molded product of FIG. 3 again to inject molten resin;
FIG. 6 is an enlarged perspective view of the main part of the inhibitor switch of FIG.

In the inhibitor switch according to the embodiment of the present invention, molding is completed through a two-step insert injection process.

That is, first, a press terminal 10 made of metal as shown in FIG. 1 is prepared, and the insert is inserted into an injection mold (not shown) for molding the shape of the primary injection molded product 20 as shown in FIG. It is to be molded integrally by injecting the molten resin in the state.

3 shows a primary injection molding 30 in which the above-described press terminal 10 and the primary injection molding 20 are integrally formed.

On the other hand, in Fig. 1, the press terminal 10 is provided with a plurality of connection end portions 11 protruding outward when the final molding to the inhibitor switch is completed, and on each surface of these connection end portions 11 made of flat plates The uneven surface 12 is formed over a certain area.

These uneven surfaces 12 may be generated during the press molding process in preparation of the press terminal 10.

As a result, the surface area in the corresponding region of the connecting end portion 11 is increased by the formation of the uneven surface 12.

In the primary injection molding 30, in which the press terminal 10 is integrally formed with the molten resin, the connection end 11 is connected to the left connection end of the primary injection molding 30, as shown in FIGS. 3 and 4. Protruding outward through the surface of (31), wherein the uneven surface 12 of the surface is also located outside the connecting end (11).

In the exemplary embodiment of the present invention, the uneven surface 12 may have various shapes without being limited to a dot shape, and may be formed of diagonal patterns, for example, as the uneven surface 13 of FIG. 4.

On the other hand, the molded primary injection molding 30 is again inserted into a mold (not shown) for the secondary injection, integrated with the injection of molten resin secondary injection molding 50 as shown in Figure 5, That is, molding is completed by the inhibitor switch.

In this secondary injection process, the uneven surfaces 12 and 13 of the connecting end portion 11 protruding to the outside of the primary injection molded product 30 are in contact with the molten resin in the secondary injection product 40. It is integrated with this.

At this time, the molten resin is sufficiently adhered to and solidified on the connection end portion 11 having a large surface area by the uneven surfaces 12 and 13, so that a gap is formed between the secondary injection molding 40 and the connection end portion 11 that are integrated. It does not occur.

FIG. 6 is an enlarged perspective view showing a virtually cut main part of the molded inhibitor switch 50. As shown, the press terminal 10 has a corresponding surface of the connecting end 11 having an uneven surface 12. As shown in FIG. It can be seen that the secondary injection molding 40 is integrally formed by contact molding in the region.

Referring to FIG. 6, the concave-convex surface 12 on the connection end 11 is formed in a boundary region that distinguishes the inside and the outside of the molded inhibitor switch 50.

On the other hand, the present invention is not limited to the above-described inhibitor switch 50, all the insert injection molding having a manner in which the press insert of the metal material is integrally molded by the injection of molten resin in the state of being inserted into the mold. Applicable to

That is, by forming the concave-convex surfaces 12 and 13 as described above on the surface of the press insert to be inserted, the contact force between the press insert and the injection molded product can be increased by integrating the molten resin with a sufficient area during injection molding. The occurrence of gaps can be prevented.

Of course, if the press insert has at least one protruding end projecting out of the insert injection molding, the uneven surface at this time is a boundary that distinguishes the inside and the outside of the insert injection molding, in particular the surface of the protruding end. By forming in the area, it is possible to prevent the occurrence of gaps between the inside and outside of the product.

10: press terminal 11: connection end
12, 13: uneven surface 20: primary injection molding
30: primary injection molding 31: connection end
40: 2nd injection molding 50: 2nd injection molding, inhibitor switch

Claims

In the inhibitor switch made of an insert injection molding molded integrally with the press terminal by the injection of molten resin in a state where the metal press terminal is inserted into the mold,
And the press terminal comprises at least a portion of an upper and lower surface formed of a flat plate having an uneven surface, and the molten resin is formed on the surface on which the uneven surface is formed to be integrally formed.

The method of claim 1,
The press terminal has one or more connection ends extending from the inside of the insert injection molding forming the inhibitor switch to protrude outwards,
The uneven surface is an inhibitor switch, characterized in that the connection end is formed in a boundary region that separates the inside and the outside of the insert injection molding.

In the insert injection molding which is molded integrally with the press insert by the injection of molten resin in the state where the metal insert insert is inserted into the mold,
The press insert is an injection molding, characterized in that at least a portion of the upper and lower surfaces made of a flat plate is formed of an uneven surface is formed integrally by contacting the molten resin on the surface on which the uneven surface is formed.

The method of claim 3,
The press insert has one or more protruding ends extending from the inside of the insert injection molding to protrude outwards,
The uneven surface insert injection molding, characterized in that the protruding end is formed in a boundary area that separates the inside and the outside of the insert injection molding.