JPH0635500Y2 - Electronic parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an electronic component in which an inner case accommodating an electronic component element is accommodated in an outer casing and an opening of the outer casing is sealed, particularly in the outer casing. The present invention relates to an assembly structure of an inner case to be stored.

<Prior Art and its Problems> FIGS. 5 and 6 show a general case structure adopted in an electronic component in which an element is housed in an inner case and an outer case. The inner case 1 is formed by a combination of an inner case body 2 in which the element A is housed and a lid body 3 that closes an opening on one side of the body 2, and the inner case 1 housing the element A and the electrodes B and C is formed into an outer case 4 The structure is such that the terminal 6 is inserted into the inside, the opening of the outer case 4 is sealed with a sealing material 5, and the terminal 6 is pulled out in a state where the element A is housed in a sealed state.

When miniaturizing the case structure of electronic components as described above,
It is considered that thinning the inner case 1 is the most effective means.

A conventional inner case 1 is composed of an inner case body 2 having an element storage chamber 7 that is open on one surface side, and a flat lid 3 that closes the opening of the case body 2, and each is molded of synthetic resin. At the same time, a positioning projection 8 for the rectangular element A is provided at the center of each of the four sides on the inner circumference of the storage chamber 7 in the inner case body 2.

The inner case 1 is assembled in the outer case 4 with the lid 3 superposed on the opening-side end surface of the inner case body 2 accommodating the element A, and the overlapping surfaces of the two being temporarily fixed with an adhesive.

By the way, if the wall thickness of the inner case body 2 is formed thin in order to reduce the size of the case structure, the area of the opening end face side for overlapping and temporarily fixing the lid body 3 is reduced, and the lid body 3 is temporarily fixed. Since this is impossible, there is a problem that the case structure cannot be downsized due to the thin thickness of the inner case body 2.

The present invention has been made in order to solve the above problems, and an object thereof is to provide an electronic component that enables the thin molding of the inner case and realizes the miniaturization of the electronic component. .

<Means for Solving Problems> In order to solve the above problems, 1
The pair of electrodes and the elements arranged between them are housed. The inner case has a flat rectangular shape, and projections for element positioning are provided on each of the four sides of the inner surface of the inner case body. The protrusions are formed so as to project toward the inside of the inner case body so as to restrict the movement of the element housed in the plane direction. The configuration is such that a notch that fits into the extended protrusion of the protrusion is provided.

<Operation> After assembling the element into the storage chamber of the inner case body, look into the opening end surface of the inner case body, and fit the notches provided around the lid body to the extension protrusions of the positioning protrusions. Then, by this fitting, the lid is temporarily fixed to the inner case main body to assemble the inner case, after which the inner case is inserted into the outer case and the opening of the outer case is sealed to complete the electronic component.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS.

As shown, the inner case 11 includes an inner case body 12 and a lid 13
Which are formed by using a synthetic resin.

The inner case body 12 is formed by integrally forming a rectangular peripheral wall 14 and a bottom wall 15 to form a storage chamber 16 for the element A inside the peripheral wall 14, and at the inner periphery of the storage chamber 16 four sides of the peripheral wall 14 are formed. Positioning projections 17 of the element A are provided at the respective central portions of.

In order to reduce the size of electronic parts, the inner case body 12 is formed so that the peripheral wall 14 and the bottom wall 15 are thinner than the conventional example shown in FIG. 5 as shown in FIG. The positioning protrusion 17 is provided with an extension protrusion 17a that protrudes toward the opening end face side of the inner case body 12.

The cover plate 13 is formed in a rectangular shape that matches the outer periphery of the peripheral wall 14, and is preferably thinner than conventional ones in order to reduce the size of electronic components. A fitting notch 18 is provided.

The projecting height of the extension projecting portion 17a is matched with the plate thickness of the lid body 13, and the extension projecting portion 17a has a wedge shape whose both side surfaces spread toward the tip as shown in FIG. The notch 18 is formed in a taper shape so as to fit the extension protrusion 17a.
By press-fitting and fitting into the extension protrusion 17a, the fitting portion is retained and coupled, and the inner case body 12 and the lid 13 are temporarily fixed.

The inner case used for the electronic component of the present invention has the above-mentioned structure, and the element A is provided in the storage chamber 16 of the inner case body 12.
When the notches 18 of the lid body 13 in which the electrodes B and C are accommodated and which are seen toward the opening end face side are press-fitted into the extended protrusions 17a, the lid body 13 is temporarily fixed to the inner case body 12 and fixed to the inner case 11. Is assembled.

Next, the inner case 11 is inserted into the outer case 21, and the opening of the outer case 14 is sealed with the sealing material 20 in a state where the terminal 19 is pulled out of the outer case 14, thereby completing the electronic component.

<Effect> As described above, according to the present invention, the element positioning protrusion provided on the inner periphery of the inner case body is extended and protruded toward the opening end face side, and the notch for fitting the extended protrusion is provided around the lid body. Therefore, the temporary fixing of the inner case body and the lid can be secured by fitting the extension protrusion and the notch, so there is no problem even if the entire inner case is molded to a thin thickness, and the thin thickness of the inner case makes it possible to reduce the size of electronic components. Can be realized.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an inner case used for an electronic component according to the present invention, FIG. 2 is an enlarged front view of a connecting portion in the same as above, FIG. 3 is a vertical side view of an electronic component using the same, and FIG.
FIG. 5 is a vertical sectional front view of the same, FIG. 5 is an exploded perspective view showing a conventional inner case, and FIG. 6 is a vertical sectional side view showing a conventional electronic component. 11 ... Inner case, 12 ... Inner case body 13 ... Lid, 17 ... Positioning protrusion 17a ... Extension protrusion, 18 ... Notch

Claims (1)

[Scope of utility model registration request] 1. An electronic component in which an inner case in which an opening of an inner case body for accommodating an element is closed with a lid is housed, and the opening of the outer case is sealed with a sealing material is provided in the inner case. A pair of electrodes and the elements arranged between them are housed. The inner case has a rectangular shape in plan view, and projections for element positioning are provided on each of the four sides of the inner surface of the inner case body, and each projection is an inner case. It is formed so as to project toward the inside of the inner case body so as to regulate the planar movement of the element housed inside, and each protrusion extends and projects toward the opening end face side of the inner case body to form a peripheral edge of the lid body. An electronic component, characterized in that a cutout that fits into an extended protrusion of the protrusion is provided on the.