JPH0388282A - Connected structure - Google Patents

Abstract

PURPOSE:To prevent any bend of a terminal at the time of welding so as to enhance a connection strength by welding between a lead and the terminal in a connected structure, where a cap is sealed to a support step, by disposing the terminal in such a position as to be supported on the support step. CONSTITUTION:In a predetermined position of a support step 6b, a terminal 8 is disposed with the bottom 8a thereof embedded in a casing 6. Before sealing a cap 7, a lead 9 is mounted on the upper surface of the terminal 8 to be brought into contact with a welding electrode under pressure with application of a current, resulting in welding of the terminal 8 and the lead 9. The terminal 8 is not bent despite of the pressure-contact of the welding electrode so that sufficient contact can be generated between the welding electrode and the lead 9, and between the lead 9 and the terminal 8, respectively, thereby securing a desired welding state and realizing a desired strength on each welded surface. Therefore, any bend of the terminal at the time of welding can be prevented, and further, a connection strength by welding between the lead and the terminal can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION CObject of the Invention] (Industrial Application Field) The present invention relates to a connection structure having a connection structure between a terminal and a lead inside an electronic component, module, electronic device, or the like.

(Prior Art) In general, in electronic components, modules, etc., as shown in FIG. 3a
In this case, the lid 4 is sealed to the support step 3b on the wall surface of the opening of the housing 3.

By the way, the welding between the terminal 2 and the lead 1 is the 4th v!
As shown in J, overlap the lead 1 on one side of the terminal 2,
The welding is performed by contacting and pressurizing the welding electrode 5 from above and applying current to the welding electrode 5.

(1m problem to be solved by the invention) However, when the welding electrode 5 is pressurized in this way,
As shown in FIG. 5, the terminal 2, which had been perpendicular to the wall surface of the housing 3, is bent downward using the base of the terminal 2 as a fulcrum by the pressing force of the welding electrode 5. Moreover, at that time, a current flows through the terminal 2 and generates heat, so that the housing 3 made of, for example, resin and supporting the terminal 2 is thermally deformed, and the bending becomes large.

When the bending becomes large in this way, the welding electrode 5, lead 1, and terminal 2 cannot make sufficient contact with each other, making it impossible to secure a desired welding state and reducing the strength of the welding surface.

For this reason, there is a problem that peeling defects occur between the leads 1 and the terminals 2 in the product state.

The present invention was made based on the above circumstances, and an object of the present invention is to provide a connection structure that can prevent bending of the terminal during welding and increase the strength of the connection between the lead and the terminal by welding. It is said that

[Structure J of the Invention (Means for Solving the Problems) The present invention provides a method in which the base of a terminal is supported by the housing within a housing having an opening, and a lead is connected to one surface of the terminal by welding. , in a connection structure having a structure in which a lid is sealed to a support step provided along a wall surface of an opening of the housing, the terminal is supported by the support step on the other side of the terminal; It is placed in the position where it will be used.

(Function) In the present invention, since the terminal is arranged at a position where the other surface of the terminal is supported by the support step provided along the wall surface of the opening of the housing, bending of the terminal during welding is prevented. It is possible to prevent this and increase the strength of the connection by welding between the lead and the terminal.

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view of a main part showing the configuration of an electronic component according to this embodiment, and FIG. 2 is a sectional view of a main part.

In these figures, 6 indicates the housing of the electronic component.

A support step 6b is provided along the wall surface of the opening 6a of the casing 6, and a lid 7 is provided on the support step 6b.
is sealed.

Further, a terminal 8 whose base portion 8a is embedded and supported by the housing 6 is arranged at a predetermined position of the support step portion 6b. Note that 8b indicates an external circuit connection terminal led out from the terminal 8 to the outside of the casing 6.

A bond 9 is connected to the surface of the terminal 8 arranged in this manner by welding.

Such welding between the terminal 8 and the lead 9 is carried out by stacking the lead 9 on one side of the terminal 8 before sealing the lid 7, and applying pressure to the welding electrode (not shown) on top of the lead 9 to apply a current. It is done by flowing.

In the electronic component of this embodiment, since the terminal 8 is arranged at a predetermined position on the support step 6b, even if the welding electrode is contacted and pressurized in this way, the terminal 8 will not bend due to the pressure applied by the welding electrode. Nothing happens.

Therefore, the welding electrode, lead 9, and terminal 8 can make sufficient contact with each other, ensuring a desired welding state, and achieving the desired strength of the welding surface.

Therefore, in the product state, peeling defects between the leads 9 and the terminals 8 will not occur.

[Effects of the Invention] As explained above, according to the present invention, the terminal is arranged at a position where one side of the terminal is supported by the support step provided along the wall surface of the opening of the housing. Therefore, bending of the terminal during welding can be prevented, and the strength of the welded connection between the lead and the terminal can be increased.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a main part showing the configuration of an electronic component according to an embodiment of the present invention, FIG. 2 is a sectional view of the main part, and FIGS.
The figure shows a conventional example. 6... Housing, 6a... Opening, 6b... Support step, 7... Lid, 8... Terminal, 9... Lead.

Claims (1)

[Scope of Claims] In a housing having an opening, a base of a terminal is supported by the housing, a lead is connected to one side of the terminal by welding, and a lead is provided along a wall surface of the opening of the housing. A connection structure having a structure in which a lid is sealed to a support step, characterized in that the terminal is disposed at a position where the other surface of the terminal is supported by the support step. body.