JPH0650187U - Waterproof switch - Google Patents

Abstract

(57) [Summary] [Purpose] The sealing material flows out from the gap between the terminal plate and the terminal,
It is an object of the present invention to solve the problem of poor contact and provide a highly reliable waterproof switch. [Structure] 1 on the side surface of the portion of the terminal 2 to be planted in the terminal plate 1.
By providing one or a plurality of recessed grooves 11, a gap due to a difference in heat shrinkage between the terminal plate 1 and the terminal 2 is prevented, and a contact failure between the terminal 2 and the contact plate 7 due to the outflow of the sealing material 4 does not occur. A reliable waterproof switch can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a waterproof switch in which a groove is provided on a side surface of a terminal planted in a terminal plate to prevent a sealing material from flowing out.

[0002]

[Prior art]

 Recently, in waterproof switches, there is an increasing demand to prevent the sealing material from flowing out from the terminals.

A conventional waterproof switch will be described below. FIG. 4 shows the structure of a conventional waterproof switch. As shown in FIGS. 4 and 5, when the terminal plate 1 is resin-molded, a portion of the terminal 2 that is insert-planted and protruded to the outside of the terminal plate 1 is a sealing material filled in the recess 3 of the terminal plate 1. It is insulated from the outside at 4. The tip of the terminal 2 inside the terminal plate 1 contacts the sliding body 5 via the spring 6 and the contact piece 7, and is sealed by the case 8.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional configuration, a gap 9 is generated in the portion where the terminal plate 1 and the terminal 2 are planted due to the difference in heat shrinkage between the resin terminal plate 1 and the metal terminal 2 due to cooling after the resin molding. As shown in FIG. 6, the sealing material 4 flows out to the side of the contact piece 7 to form the insulating film 10, which interferes with the contact between the terminal 2 and the contact piece 7 shown in FIG. Had a problem of significantly decreasing

The present invention solves the above conventional problems, and an object of the present invention is to provide a waterproof switch in which the sealing material is prevented from flowing out.

[0006]

[Means for Solving the Problems]

 In order to solve this problem, the waterproof switch of the present invention has a structure in which one or a plurality of concave grooves are provided on the side surface of the portion of the terminal to be implanted in the terminal plate.

[0007]

[Action]

 With this configuration, when the terminal plate is heat-shrinked by cooling after resin molding, the portion of the terminal plate protruding into the groove of the terminal is caught in the groove and prevents heat shrinkage of the terminal plate. It is possible to prevent a gap from being formed between the terminal and the terminal.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same components as those of the conventional one are denoted by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 1 to 3, one or a plurality of recessed grooves 11 are provided on the side surface of the portion of the terminal 2 to be planted in the terminal plate 1.

The operation of the waterproof switch configured as described above will be described with reference to FIG. When the terminal 2 is inserted and the terminal plate 1 is resin-molded, the resin portion of the terminal plate 1 is injected into the concave groove 11 of the terminal 2 and protrudes into the concave groove 11 when the terminal plate 1 is cooled and thermally contracted. A portion of the groove 11 catches on the groove 11 to prevent heat shrinkage of the resin in the groove 11, and no gap is formed between the terminal plate 1 and the terminal 2.

As described above, according to the present embodiment, by providing the concave groove 11 in the side surface portion of the terminal 2 that is planted in the terminal plate 1, thermal contraction of the resin is prevented in the concave groove 11 and the terminal plate is prevented. It is possible to prevent the sealing material 4 from flowing out to the side of the contact piece 7 and forming an insulating coating, since no gap is created between the terminal 1 and the terminal 2.

[0012]

[Effect of device]

 As is apparent from the above embodiments, the present invention prevents the terminal plate from heat shrinking in the groove portion by providing the groove on the side surface of the terminal plate to be implanted in the terminal plate, and Since there is no gap between the terminals and the sealing material does not flow out to the contact piece side to form an insulating coating, a highly reliable waterproof switch that does not cause poor contact between the terminals and the contact piece. Can be realized.

[Brief description of drawings]

FIG. 1 is a sectional view of a terminal portion, which is a main portion of an embodiment of a waterproof switch of the present invention.

FIG. 2 is an enlarged sectional view of the same.

FIG. 3 is a perspective view of the terminal.

FIG. 4 is a perspective view of a conventional waterproof switch.

FIG. 5 is a cross-sectional view of a terminal portion, which is the main part of the same.

FIG. 6 is an enlarged sectional view of the same.

[Explanation of symbols]

 1 terminal board 2 terminal 11 groove

Claims (1)

[Scope of utility model registration request] 1. A waterproof switch in which a terminal is planted in a terminal plate, wherein one or a plurality of recessed grooves are provided on the side surface of a portion of the terminal planted in the terminal plate.