JPH0685590A - Lead inserting jig - Google Patents

Abstract

PURPOSE:To stablize the rate of insertion in the case of inserting an L-shaped mold lead to a metal outer ring with the inserting jig. CONSTITUTION:In a hole 13 of a lead inserting jig 12, projections 14a and 14b are provided at two positions so as to support an L-shaped mold lead 6, and the lower edge part of the mold lead 6 is guided to a glass hole 5 and inserted while regulating the posture forcedly so as to come near the center of the hole 13 of the lead inserting jig by providing tapered parts 15a, 15b and 15c. Further, the lead inserting jig can be also regulated the vertical movement in the hole 13 by the projections 14a and 14b, and the mold lead 6 can be prevented as well from dropping out of the jig 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead insertion jig for an electronic component such as an airtight terminal, and more particularly to a hole shape of the lead insertion jig when inserting an L-shaped molding (deformation) lead into a substrate.

[0002]

2. Description of the Related Art A structural example of an airtight terminal which is an example of an electronic component and a lead insertion jig thereof will be described with reference to the drawings. FIG. 3 is a sectional view of a crystal unit using a general hermetic terminal, and FIG. 4 is a sectional view of a conventional lead insertion jig.

FIG. 3 shows a crystal resonator in which an airtight terminal 2 which is an electronic component supporting a crystal piece 1 is covered with a metal cap 3 and fixed thereto. This airtight terminal 2 is actually fair 1
No. 19458, etc., a pair of L-shaped leads are provided in the sealing holes 5 and 5 penetrating both ends of the metal outer ring 4 which is an oval base having a thickness of about 1.5 mm. 6,
6 is inserted and sealed with glass 7, 7. Both ends of the rod-shaped crystal piece 1 are electrically and mechanically connected to the flattened ends of the pair of molding leads 6 and 6 protruding from the upper surface of the metal outer ring 4 by the conductive adhesives 8 and 8. . The metal outer ring 4 is
A flange portion 4a integrally provided on the lower portion of the outer periphery is provided, and a recessed step portion 9 for fitting a cap is formed between the flange portion 4a and the outer periphery of the metal outer ring 4. The cap 3 has a flange portion 3a that extends integrally with the outer circumference of the opening end portion.

Metal outer ring 4 and each flange portion 4 of the cap 3
The a and 3a are airtightly fixed by welding or cold pressure welding.

FIG. 4 shows a conventional lead insertion jig for inserting the molding leads 6, 6 of the airtight terminal 2 into the sealing holes 5, 5 of the metal outer ring 4. Molding lead 6,
6 is inserted into the sealing holes 5 and 5 of the metal outer ring 4 via the perforated tablet-shaped glasses 7 and 7. The shape of the hole 11 of the conventional lead jig 10 is a through hole having a drilled hole shape. By vibrating the insertion jig 10, the molding lead 6,
6 to the glass holes 7a, 7 of the tablet-shaped glass 7, 7.
It was inserted into a and then glass-sealed.

[0006]

By the way, as described above, the hole shape of the conventional lead insertion jig 10 is a through hole having a drill hole shape, and the L-shaped molding leads 6 and 6 are connected to the glass 7. When the insertion jig 10 is vibrated to insert the lower ends of the molding leads 6 and 6 into the sealing holes 5 and 5 of the metal outer ring 4 via 7
Although it is guided to the glass holes 7a, 7a, the molding lead 6 may pop out from the upper surface P of the insertion jig 10 due to the vibration in the vertical direction. In the hole 11 of the insertion jig 10,
Since the behavior of the molding lead 6 is not stable and tilts, the lower end of the molding lead 6 deviates from the sealing hole 5 portion, and the insertion rate of the metal outer ring 4 into the sealing hole 5 is deteriorated. .

[0007]

In order to solve the above-mentioned problems, a lead insertion jig of the present invention has an L-shaped molded lead in a hole of a base body of an electronic component, for example, a hole of a metal outer ring of an airtight terminal. At the time of inserting, a plurality of protrusions for supporting the lead are provided in the hole of the lead insertion jig.

It is preferable that a taper portion having a predetermined angle is provided on the upper end portion of the protrusion.

[0009]

According to the present invention, by providing a plurality of protrusions in the hole of the lead insertion jig and supporting the L-shaped molding lead, the behavior of the molding lead when passing through the hole is suppressed. The molding lead can be effectively guided to the hole of the base body of the electronic component.

That is, since the hole shape of the conventional lead insertion jig is simply a through hole in the form of a through hole, the movement of the molding lead in the hole is very unstable.
Providing multiple protrusions in the hole of the lead insertion jig, and especially by tapering the upper end of the protrusion, the behavior of the molding lead when passing through the hole becomes gentle, and Insertion rate is improved.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS.

In each drawing, the same members as those in FIG. 4 of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

FIG. 1 is a sectional view of a lead insertion jig which is an embodiment of the present invention and an airtight terminal assembled by the same. In FIG. 1, two holes are formed in each hole 13 of the lead insertion jig 12 of the present invention for inserting the two L-shaped molding leads 6 and 6 forming the airtight terminal 2 which is an electronic component. Protrusions 14a, 14b and base portion 14c
Is provided. Incidentally, the holes 13, 13 of the two lead insertion jigs correspond to the glass holes 7a, 7a of the outer ring metal 4 which is the base body of the airtight terminal 2, and the holes 13 and 13 of the two lead insertion jigs are one set, which are configured in a plane-symmetrical manner.

In the following, only one of the holes 13 of the lead insertion jig will be described as an example with reference to the sectional views of the lead insertion jig shown in FIGS.

As shown in FIGS. 2a and 2b, when the molding lead 6 is inserted into the glass hole 7a of the metal outer ring 4, in order to support the molding lead 6 in the hole 13 of the lead insertion jig,
Since the protrusions 14a and 14b and the base portion 14c are provided at two places, when the molding lead 6 passes through the hole 13, the lower end portion of the molding lead 6 has tapered portions 15a and 15 inside the hole 13.
It contacts b and 15c and slips off. This molding lead 6
At the time when the lower end portion of the mold passes the lower protrusion 14b, the non-molded portion of the molding lead 6 is supported by the two protrusions 14a and 14b and guided to the glass hole 7a of the metal outer ring 4.

Next, as shown in FIGS. 2c and 2d, when the lower end of the molding lead 6 is inserted into the glass hole 7a, it falls while being supported by the projections 14a and 14b. In addition,
As shown in FIG. 2b on the way, when the upper end portion of the molding lead 6 comes into contact with the upper protrusion 15b, the molding lead 6 housed in the glass hole 7a rotates around the upper portion and the tapered portion 15a.
Slips along.

The upper end of the molding lead 6 is another tapered portion 15.
The same operation is performed when the contact with b and 15c is made.

As shown in FIG. 2e, when the forming lead 6 is finally inserted through the glass 7 of the metal outer ring 4, the L-shaped portion of the forming lead 6 is formed by the taper portion 15c which comes into final contact. Since the direction of the molded part of (1) is made, the lead direction correction work becomes easy.

As described above, the L-shaped molding lead 6 is
When the lower end of the molding lead 6 reaches the glass hole 7a as shown in FIG. 2, the protrusions 14a, 14 are passed through the hole 13 of the lead insertion jig 12 and inserted into the glass hole 7a.
By b, the moving range of the molding lead 6 passing through the hole 13 of the lead insertion jig is limited, and the molding lead 6 is easily inserted into the glass hole 7a.

If the upper end of the molding lead 6 passes through the upper protrusion 14a, the upper protrusion 14a holds down the lead 6 even if vertical vibration is applied to the lead insertion jig 12. Therefore, it does not protrude from the hole 13 of the lead insertion jig.

This is also the case with the lower protrusion 14b, and the above advantages have been confirmed.

[0022]

As described above, according to the present invention, the lead insertion jig has a hole-like cylindrical shape such as a through hole, and a plurality of protrusions are provided inside and the upper end of each protrusion is provided. By providing the tapered portion, the moving range of the L-shaped molding lead of the electronic component, for example, the airtight terminal is suppressed, and the insertion rate of the molding outer lead into the glass hole of the metal outer ring is improved.

Further, the protrusion also suppresses the movement of the forming lead in the vertical direction and helps to reduce the number of parts dropped from the jig. By inserting the L-shaped forming lead into the metal outer ring in a certain direction, the correction work can be performed. It also has the effect of improving ease.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a lead insertion jig that is an embodiment of the present invention and an airtight terminal assembled by the jig.

2A to 2E are sectional views of a jig showing a state in which a molding lead is inserted into a lead insertion jig that is an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a crystal unit using a general airtight terminal.

FIG. 4 is a sectional view of a conventional lead insertion jig.

[Explanation of symbols]

 2 Airtight Terminal (Electronic Component) 4 Metal Outer Ring (Base) 5 Sealing Hole 6 Molding Lead 7 Glass 7a Glass Hole 12 Lead Inserting Jig 13 Lead Inserting Jig Hole 14a, 14b Protrusion 14c Stand 15a, 15b, 15c Tapered part

Claims (3)

[Claims] 1. A jig for inserting an L-shaped molded lead into a hole of a base of an electronic component, wherein a plurality of protrusions for supporting the lead are provided in the hole of the lead insertion jig. jig. 2. The lead insertion jig according to claim 1, wherein a taper portion is provided on an upper end portion of the protrusion. 3. The lead insertion jig according to claim 1, wherein the electronic component is an airtight terminal.