JP3232409B2 - contact - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact which is pressed into an insulator and held.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 5 and 6, a contact 11 is press-fitted into a hole 21 formed in an insulator 20 and is held by the insulator 20; A contact portion 15 connected to one end of the shaft 13 in one axial direction and disposed outside the hole 21;
And a terminal portion 17 connected to the other end of the terminal.

The holding portion 13 protrudes from at least one edge parallel to the one axial direction in a direction crossing the one axial direction, and has first and second protrusions 18 and 19 which bite into and engage with the insulator 20 in the hole 21. Have.

The holding portion 13 is set to have a width slightly smaller than the hole width a of the hole 21. As shown in FIG. 6, the width of the holding portion 13 is such that the width b of the portion having the first protrusion 18 is smaller than the width c of the portion having the second protrusion 18. Has become.

The first projection 18 is engaged at the initial stage of press-fitting the insulator 20 into the hole 21. The second protrusion 19 is press-fitted into the hole 21 of the insulator 20 at a later stage.

The first and second projections 18 and 19 have the same thickness as the flat plate-shaped holding portion 13, and both the first and second projections 18 and 19 are parallel to the holding portion 13. It protrudes.

Therefore, the first and second projections 18, 1
9 is the same thickness as the thickness of the holding portion 13 and protrudes on the same surface as the holding portion 13.

FIGS. 7 and 8 show a state in which the contact 11 is held in a correct position in the hole 21 of the insulator 20. FIG.

Now, the contact 11 is connected to the insulator 20
When press-fitted into the hole 21, as shown in FIGS. 7 and 8,
At the initial stage of press-fitting, the first protrusion 18 is press-fitted into the insulator 20 in the hole 21. Thereafter, when the contact 11 is further pressed into the hole 21 of the insulator 20, the second protrusion 19 is pressed into the insulator 20 at the same portion as the first protrusion 18 in the hole 21.

As shown in FIG. 7, when the contact 11 is held by the insulator 20 in a correct posture, the engagement portion L3 of the first projection 18 and the engagement of the second projection 19 with the insulator 20 are engaged. The relationship with the portion L4 is obtained.

[0011]

However, when the contact 11 is pressed into the hole 21 of the insulator 20,
Since the second projection 19 is pressed into the insulator 20 at the same portion as the first projection 18 in the hole 21 while passing through the same portion of the insulator 20, the engagement of the first projection 18 is prevented. The engagement portion L4 of the second projection 19 decreases by the amount of the portion L3. Therefore, contact 1
There is a problem that the holding force between the first and insulators 20 is reduced.

As a countermeasure to avoid such a decrease in the holding force, it has been proposed to increase the width c of the holding portion 13. In this proposal, in order to further increase the width dimension c, the engaging portion L4 of the second projection 19 is devised to have a large dimension. However, the first and second projections 18, Since the dimensional difference of the contact 19 becomes large, there is a problem that the contact is tilted as shown in FIG. 9 after holding.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a contact which can hold an insulator in a correct posture with a sufficient holding force, even if the protrusion has the same size as the conventional one.

Another object of the present invention is to provide a contact which can hold the insulator in a correct posture with a sufficient holding force, even if there is a large difference in the protrusion dimensions.

[0015]

According to the present invention, a flat plate-shaped holding portion for press-fitting into a hole formed in an insulator and press-fitting and holding the insulator is connected to one axial end of the holding portion. And a contact portion disposed outside the hole, wherein the holding portion projects from at least one edge parallel to the uniaxial direction in a direction intersecting the uniaxial direction and bites into the insulator in the hole to engage with the insulator. A contact having a plurality of protrusions, wherein the protrusion of the protrusion to be engaged at the initial stage of the press-fitting of the insulator into the hole is set to a smaller size than the protrusion of the protrusion to be press-fitted in the later stage of the press-fitting. In addition, a contact is obtained in which the plurality of protrusions protrude from the one edge at an angle in which protruding directions are shifted from each other.

[0016]

According to the contact of the present invention, since the projecting directions of the plurality of projecting portions project at angles shifted from each other,
Since each of the plurality of protrusions is engaged with a press-fit portion of a different insulator, an engagement portion with a sufficient holding force is secured.

Further, even if there is a large difference between the dimensions of the plurality of protrusions, the protrusions protrude at an angle shifted from each other. Will be retained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a contact according to the present invention will be described below with reference to the drawings. 1 to 4
Shows an embodiment of the contact of the present invention. The same portions as those of the conventional contact shown in FIGS. 5 and 6 are denoted by the same reference numerals and described.

First, referring to FIGS. 1 and 2, the contact 11 is provided with a hole 21 formed in the insulator 20.
A flat plate-shaped holding portion 13 that is press-fitted into the insulator 20 to hold the insulator 20, a pin-shaped contact portion 15 connected to one axial end of the holding portion 13 and disposed outside the hole 21, and And a terminal portion 17 connected to the end.

The holding portion 13 projects from at least one edge parallel to the one axis direction in a direction crossing the one axis direction and engages the first and second projections 18 and 19 in the hole 21 so as to bite into and engage with the insulator 20. Have. This holding unit 13
Is set to a width slightly smaller than the hole width dimension a of the hole 21.

As shown in FIG. 6, the width of the holding portion 13 is such that the width b of the portion having the first projection 18 is the second size.
The width dimension is smaller than the width dimension c of the portion having the projection 18. The first protrusion 18 is engaged at the initial stage of press-fitting the insulator 20 into the hole 21. The second protrusion 19 is press-fitted into the hole 21 of the insulator 20 at a later stage.

The first and second projections 18 and 19 have the same plate thickness as the flat plate-shaped holding portion 13 and project from one edge at an angle in which the projection directions are displaced from each other.

Each of the first and second projections 18 and 19 has the same thickness as the thickness of the holding portion 13.

In the contact 11 shown in FIG. 1 and FIG.
Projecting portion 18 projects on the same surface as the holding portion 13, and the second projecting portion 19 extends at an angle to the surface of the holding portion 13. The first and second projections 18 and 19 are
Is the same as the thickness of the sheet.

The contact 11 can also be formed by punching a conductive plate with a press and then bending the conductive plate. The contact portion 15 is a portion that comes into contact with a counterpart contact (not shown), and may have a pin shape, a flat plate shape, or a socket shape. The terminal portion 17 is connected to a printed circuit board by soldering or connected to a cable after the contact 11 is held by the insulator 20.

In the present invention, the first and second projections 18 and 19 may extend in a direction intersecting the surface of the holding portion 13 without being limited to the above embodiment.

FIGS. 3, 4A and 4B show a state in which the contact 11 is held in the hole 21 of the insulator 20. FIG. The hole 21 is formed substantially in a cross shape when viewed in cross section. Therefore, the tip of the contact portion 15 is press-fitted into the center where the holes 21 intersect at the initial stage of press-fitting into the insulator 20, and then the holding portion 13 is press-fitted.

The contact 11 used in this example employs an example in which the first and second projections 18 and 19 extend in a direction intersecting the surface of the holding portion 13. .

Now, the contact 11 is connected to the insulator 20
When press-fitted into the hole 21, as shown in FIGS. 2 and 3,
At the initial stage of press-fitting, the first protrusion 18 is press-fitted into the insulator 20 in the hole 21. Thereafter, when the contact 11 is further press-fitted into the hole 21 of the insulator 20, the second protrusion 19 is press-fitted into the insulator 20 at a portion different from the first protrusion 18 in the hole 21.

As shown in FIG. 3, when the contact 11 is held by the insulator 20, the engagement portion L1 of the first projection 18 with the insulator 20 and the second projection 1
9 and the engagement portion L2.

When the contact 11 is press-fitted into the hole 21 of the insulator 20, the second protrusion 19 is press-fitted into the insulator 20 at a portion different from the first protrusion 18 in the hole 21. The engagement portion L2 of the projection 19 is secured (ca portion). Therefore, a sufficient holding force between the contact 11 and the insulator 20 can be obtained.

Therefore, the first and second projections 18, 1
Even if there is a large dimensional difference between the dimensions of the first and second
Since the projection directions of the projections 18 and 19 protrude at an angle shifted from each other, after the holding, the insulator 20 is held in a correct posture with a sufficient holding force.

[0033]

As described above, according to the embodiment of the present invention, according to the contact of the present invention, since the projecting directions of the plurality of projections project at angles shifted from each other, each of the plurality of projections is formed. Since the engaging portions are engaged with the press-fit portions of the different insulators, it is possible to secure an engaging portion with sufficient holding force.

Further, even if there is a large difference between the dimensions of the plurality of protrusions, the protrusions protrude at an angle shifted from each other. Can hold.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a contact according to the present invention.

FIG. 2 is an explanatory view showing a state before a contact shown in FIG. 1 is press-fitted into a hole of an insulator.

FIG. 3 is an explanatory diagram showing a state after the contact shown in FIG. 2 is press-fitted into a hole of an insulator.

4A is a sectional view taken along line IV-IV of FIG. 3, and FIG. 4B is a sectional view taken along line VV of FIG.

FIG. 5 is a perspective view showing an embodiment of a conventional contact.

FIG. 6 is an explanatory diagram showing a state before the contacts shown in FIG. 5 are press-fitted into holes of an insulator.

FIG. 7 is an explanatory view showing a state after the contacts shown in FIG. 6 are press-fitted into holes of an insulator.

FIG. 8 is a right side view of FIG. 7;

FIG. 9 is an explanatory view showing a state in which the contact shown in FIG. 6 is press-fitted into a hole of the insulator in an incorrect posture.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Contact 13 Holding part 15 Contact part 17 Terminal part 18 1st protrusion 19 2nd protrusion 20 Insulator 21 hole

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/40 H01R 13/04

Claims (4)

(57) [Claims] 1. A flat plate-shaped holding portion for press-fitting into a hole formed in an insulator and holding the insulator, and a contact portion connected to one axial end of the holding portion and arranged outside the hole. The holding portion has a plurality of protrusions projecting from at least one edge parallel to the uniaxial direction in a direction intersecting the uniaxial direction and biting into the insulator in the hole to engage with the insulator. In a contact in which the protrusion of the protrusion to be engaged at the initial stage of the press-fitting into the hole is set to a size smaller than the protrusion of the protrusion to be press-fitted in the later stage of the press-fit, the plurality of protrusions are from the one edge. A contact characterized in that the projecting directions project at angles offset from each other. 2. The connector according to claim 1, wherein the plurality of protrusions extend in a direction intersecting with the surface of the holding portion. 3. The contact according to claim 1, wherein the plurality of protrusions have the same thickness as the thickness of the holding portion. 4. The contact according to claim 1, wherein one of said plurality of projections projects on the same surface as said holding portion.