JPS59101733A - Terminal sealing unit for relay or like - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a device for sealing a terminal portion of a relay or a switch that is suitable for sealing the terminal extraction portion of a relay or switch housed in an airtight container or for mounting on a printed board.

[Background technology]

In this type of relay, etc., when sealing the terminal extraction part that penetrates the body with a sealing material such as epoxy resin, as shown in Fig. 1, the terminals 2, 2, etc. - A recess 3 is formed around the penetration part, and a narrow groove 4 is formed in the recess 3 or a sealant injection part 5 is formed in a part of the narrow groove 4, as shown in FIG.
There is a type in which an inclined surface 6 is formed in the recess 3, and in FIG. In Fig. 2, the sloping surface 6 is used to spread the sealant quickly around the terminal penetration part, but in Fig. 1, the surface of the sealant is spread due to the capillary action. In many cases, the stagnation effect due to tension is superior (and if the slope 6 in Fig. 2 does not have a very large slope, it will flow. In that case, the body 1 will be higher by the slope, and the terminal 2 and the recess 3 will be If the walls are too close, the sealing material will not be filled sufficiently and the seal will fail.In detail, if the viscosity of the sealing material is low, it will have good fluidity, but the sealing material will seep into the container through the terminal. The viscosity cannot be determined solely by the efficiency of the sealing work, which can cause failures in relays, and there are also variations in the working room temperature and the sealing material. It was necessary.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned conventional situation and has been made to improve the situation, and its object is to provide a sealing device that has high sealing efficiency and is free from sealing defects.

[Disclosure of the invention]

Embodiments of the present invention will be described below with reference to FIGS. 3 to 6, in which the same parts as in the conventional example shown in FIGS. 1 and 2 are denoted by the same reference numerals.

In the MSa diagram, a recess 3 is formed in a synthetic resin container l, the surface of the recess 3 is roughened by texture 8 processing, and the terminal 2.2 is penetrated from that surface, and the sealing Material (
When the material (outside the garden) is injected into the recess 3, the surface tension of the sealant decreases due to the rough surface, and the sealant quickly fills the recess 3.
You can do 111 things in the inner light song.

Further, as shown in FIG. 4, triangular pyramid-shaped small protrusions 7, 7, etc. may be provided to reduce the surface tension. Furthermore, it may be a small projection in the shape of a square pyramid, a cone, or a hemisphere.

Further, as shown in FIG. 5, a surrounding wall 9 may be formed in the container l, the inside of the surrounding wall 9 may be a recess 3, and small protrusions 7, 7, . . . may be formed.

As in the sixth factor, the terminal 2.2 is placed inside the opening edge of the phase body IO.
A substantially plate-shaped substrate 11 having ... penetrated therethrough is sunk and inserted to form a recess 3 surrounded by the inner periphery of the opening edge and the surface of the substrate, and small protrusions 7, 7, and so on are provided therein. Even if the terminal 2 passes through the recess 3 in several pieces, the surface tension of the sealing material is lowered by the rough surface, so the sealing material can quickly penetrate into the recess. It fills evenly and prevents sealing defects.

Therefore, the influence of variations in sealing material and room temperature can be suppressed,
Uniform sealing effect and sealing work efficiency can always be obtained. For rough surface processing, it is sufficient to form a rough surface on the mold used for plastic molding of the vessel l, and unlike slopes and grooves, the height of the rough surface is extremely low, so the height of the vessel l can be made smaller.

Furthermore, even in small relays, roughening can be formed in a smaller area than grooves or sloped surfaces.

[Effects of the Invention] As explained above, according to the present invention, the body 1 of a relay etc.
The structure is characterized in that the terminal 2 passing through the terminal 2 is sealed with a sealing material such as epoxy resin, and the surface of the body around the terminal penetration part is subjected to rough surface processing such as texture processing. By lowering the surface tension of the sealing material with a rough surface, the fluidity of the sealing material is improved, which eliminates sealing defects and improves sealing work efficiency. It also solves contradictory issues.

[Brief explanation of drawings]

1 and 2 are perspective views showing a conventional example, and FIGS. 3 to 6 are perspective views showing each embodiment of the present invention. l... body, 2... terminal, 3... recess, 7...
Small protrusion, 8... Grain, 9... B wall, 10... Box body, 11... Substrate. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (2 idiots) Figure 1 Figure 3 Figure 5 Figure 2 Figure 4 Figure 6ffl

Claims (1)

[Claims] 1) In sealing a terminal passing through a device body such as a relay with a sealing material such as an epoxy resin, rough surface processing such as texture processing is applied to the surface of the device body around the terminal penetration part. A terminal sealing device for a relay, etc., characterized by: 2) A terminal sealing device for a relay or the like according to claim 1, wherein a recess is formed around the terminal penetration part, and the inside of the recess is roughened. 3) A terminal sealing device for a relay, etc., according to claim 2, in which a plurality of terminals are passed through the recessed portion; Range $
A terminal sealing device for a relay, etc., as described in item 2. 5) A substantially plate-shaped substrate with terminals passed through it is sunk and inserted inside the opening edge of the companion, and a recess is formed between the opening edge inner restraint and the substrate surface, according to claim mz. Terminal sealing device for relays, etc.