JP2926091B2 - Contact pins in connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug-like insulator having a plurality of axially penetrating contact holding holes formed therein, which is made of synthetic resin, into which contact pins are respectively inserted. The present invention relates to an improvement in a contact pin which is inserted into a contact holding hole formed in an insulator and held in a connector which is assembled by connecting a core wire of a cord to the contact pin.

[0002]

2. Description of the Related Art In a conventional connector, a contact pin 1 of the above-described connector is formed by bending a metal plate cut into a predetermined shape, as shown in FIGS. A pin-shaped contact terminal portion 10 is formed on the side, a channel-shaped body portion 11 is formed on the rear intermediate portion, and a channel-shaped connection terminal portion 12 is formed on the rear end side. Thus, the contact pins 1 are configured.

[0003] In a state where the terminal portion 31 of the core wire 30 of the cord 3 is connected to the connection terminal portion 12 on the rear end side, the contact pin 1 is an insulator 2 formed of a synthetic resin material as shown in FIG. From the rear, the front end of the body portion 11 abuts against the rear end surface of the small-diameter portion 200 on the front end side of the contact holding hole 20 to form a pin on the front end side. Contact terminal part 10
Is projected to the front side of the insulator 2,
In this state, the lance w provided on the body 11 to be fitted into the contact holding hole 20 is
It is configured to engage with a locking portion y formed on the inner wall surface to prevent the rearward escape, and to be in a state of being assembled to the insulator 2.

[0004] Another conventional means is known. This is proposed in Japanese Patent Application Laid-Open No. 55-30191, and as shown in FIGS.
In a contact pin 1 of a connector in which a pin-shaped contact terminal portion 10 on the front end side, a cylindrical middle body portion 11 and a channel-shaped connection terminal portion 12 on the rear end side are formed in a continuous shape back and forth. The front half 11f of the cylindrical middle body 11 is formed to have a smaller diameter than the rear half 11r, and a connecting portion between the front half 11f and the large-diameter cylindrical rear half 11r is formed on the shoulder 13 of the inclined surface. A tongue-shaped lance w.w is cut and raised on the cylindrical front half-side cylindrical wall of.

[0005] As shown in FIG. 30, a insulator 2 made of a synthetic resin material for holding the contact pin 1 is provided with a contact pin 1 from the base end (the upper end in the figure).
Is formed in the inside diameter corresponding to the outer diameter of the large-diameter rear half 11r of the cylindrical intermediate body 11, and the front end of the contact chamber CR1 is Small diameter chamber CR of inner diameter corresponding to outer diameter of first half side 11f of small diameter
2 is formed, and the umbrella-shaped portion of the connection portion between the small-diameter chamber CR2 and the contact chamber CR1 is attached to the intermediate body 1 of the contact pin 1.
1 is formed at a stop t which abuts on the shoulder portion 13 on the rear half 11r of the contact chamber C2.
A second contact chamber CR3 having a diameter larger than R1 is formed continuously, and a connecting portion between the second contact chamber CR3 and the small diameter chamber CR2 has a small-diameter front half 11f of the intermediate body 11 of the contact pin 1. A locking shoulder 24 is formed which abuts a tongue-shaped lance w formed on the wall. Further, the reinforcing pin p is inserted into the intermediate body 11.

As a result, when the contact pin 1 is inserted into the contact chamber CR1, when the shoulder 13 on the front surface of the large-diameter rear half 11r of the intermediate body 11 comes into contact with the stop t, the second The tongue-shaped lance w provided on the small-diameter front half 11 f of the intermediate body 11 that has entered the contact chamber CR <b> 3 is opened and locked to the locking shoulder 24.

[0007]

The contact pin 1 in the above-mentioned connector, in the former case, is inserted into a contact holding hole 20 formed in the insulator 2 and assembled and held in the insulator 2. In addition, the regulation for inserting the contact pin 20 into the contact holding hole 20 to a predetermined depth is restricted to a narrow portion corresponding to the outer diameter of the pin-shaped contact terminal portion 10 of the contact pin 1 at the front end side of the contact holding hole 20. With the diameter portion 200 formed, the pin-shaped contact terminal portion 10 at the front end of the contact pin 1 inserted into the contact holding hole 20 projects forward from the small diameter portion 200 by a predetermined length, Body 1 continuous with contact terminal 10
The abutting portion Z formed at the front end of the small diameter portion 200 abuts against a stopper S formed at the rear end of the small-diameter portion 200.

For this reason, the pin-shaped contact terminal portion 10 at the front end of the contact pin 1 is
The contact terminal portion 10 is deformed due to a grip or the like at the time of penetrating through the contact portion 00 to cause an assembling error. Before the engagement with the stop portions y is completed, the movement in the insertion direction may be stopped, and there is a problem that the assembly of the contact pin 1 to the insulator 2 is troublesome and uncertain.

The insulator 2 holds the contact pin 1 on the inner wall surface of the contact holding hole 20 and the body 11 of the contact pin 1 inserted into the holding hole 20.
As shown in FIG. 4, when the synthetic resin material to be the body b is molded on the outer peripheral surface of the assembled connector main body a, as shown in FIG. Leakage around the contact terminal portions 10 from the mating surface of the holding hole 20 and the body portion 11 of the contact pin 1 disables the performance of connecting the assembled connector A product to the jack. However, it is required that the fitting surface be formed in a water-tight state so that the synthetic resin material does not leak. However, this is problematic.

In the latter case, contact pins 1
Are fitted into the large-diameter rear half 11r and the small-diameter first half 1 of the cylindrical intermediate body 11.
Since the rotation is freely performed in the circumferential direction by being performed by the base end of 1f, there is no means for restricting the circumferential rotation, so that the contact pin 1 holds the cord 3 connected thereto. There is a problem that it is difficult to insert the connection terminals 12 into the contact chambers CR1 and CR2 such that the connection terminals 12 have a predetermined posture.

Therefore, the first half 1 of the small diameter of the intermediate body 11
The locking shoulder 63 provided in the contact chamber CR3 is formed in a size corresponding to the lance w so as to be engaged with the lance w formed from the cylindrical wall of 1f and formed in a tongue piece shape, and is limited to a corresponding position. In this case, the lance w and the locking shoulder 2 may be misaligned due to the misalignment of the posture of the contact pin 1 to be inserted.
4 may not be engaged.

For this reason, the contact chamber CR3 for accommodating the small-diameter front half 11f formed by cutting and raising from the lance w and the cylindrical wall is formed as a chamber having a large inner diameter corresponding to the outer diameter of the expanded lance w. When the contact pin 1 is inserted, the lance w is positioned in the free space and always engages with the locking shoulder 63. Therefore, most of the first half 11f of the intermediate body 11 of the contact pin 1 is located in a free state in the large diameter contact chamber CR3, and the front end of the first half 11f of the intermediate body 11 is formed. This causes a problem that the pin-shaped contact terminal portion 10 that is continuous with the connector is not stable, and the pin-shaped contact terminal portion 10 is easily damaged when the assembled connector is connected to the jack side.

The present invention has been made in order to solve these problems occurring in the conventional means. When the contact pin 1 is inserted into and held in the contact holding hole 20 of the insulator 2, the present invention is applied. A stopper S for regulating the insertion depth of the contact pin 1 into the contact holding hole 20 and an abutting portion z which abuts the stopper S are used to prevent the inserted contact pin 1 from coming out backward. After the lances w are locked to the locking portions y provided on the inner peripheral surface of the contact holding hole 20, the abutting portions Z are provided at positions closer to the rear than the lances w provided on the portion 11. 20 against the stopper S provided on the inner peripheral surface of the insulator 20.
The outer peripheral surface of the front half side of the intermediate body portion 11 forming the lance w is held in close contact with the inner wall surface of the contact holding hole 20 so that the contact pin 1 can be easily and accurately assembled to the contact hole 1. It is another object of the present invention to provide a new means for stabilizing the pin-shaped contact terminal portion 10.

[0014]

According to the present invention, as a means for achieving the above-mentioned object, a metal plate is stamped and bent into a predetermined shape to form a pin-shaped contact terminal portion 10 on the front end side. Intermediate body 11 and rear end connection terminal 12
In the contact pin 1 of the connector, which is formed in a shape that is continuous back and forth, an intermediate body portion 11 has a cylindrical portion 11a having a cylindrical shape on the front half side and a rectangular cylindrical portion 11b on the rear half side having a rectangular cylindrical shape. The front end face of a corner projecting from the cylindrical portion 11a to the four sides in the front view of the rectangular tubular portion 11b is formed in the contact holding hole 20 of the insulator 2.
Square-shaped intermediate portion 20 corresponding to the square tubular portion 11b
b and a circular hole-shaped front end portion 20 corresponding to the cylindrical portion 11a.
a formed at an abutting portion z which abuts against stoppers S formed by four front wall surfaces of the front end of the intermediate portion 20b at the connection portion with the a. a cylindrical wall portion of the cylindrical portion 11a in a rear view. 11a, a tongue-shaped lance w · w is formed by cutting and erecting a tongue-shaped lance w. The rear edge of w · w is at least the left and right edges of the four edges of the square hole-shaped intermediate portion 20b of the inner wall surface of the round hole-shaped front end portion 20a of the contact holding hole 20 in rear view. A contact pin in a connector characterized in that the contact pin is engaged with a rear end face of an interrupt groove 23 formed at a portion corresponding to each intermediate portion.

[0015]

The contact pin 1 of the connector according to the present invention having the above-described configuration is configured such that the fitting into the contact holding hole 20 of the insulator 2 is performed by the front half cylindrical portion 11a and the rear half square cylindrical portion 11b of the body 11. By doing so, the contact pin 1 can be inserted into the contact holding hole 20 without pressing the pin-shaped contact terminal portion 10 on the front end side against the inner wall surface of the contact holding hole 20. Can be easily inserted.

When inserting, the lances w provided on the cylindrical portion 11a on the front half side of the body 11 are engaged with the locking portions y.
When it engages with the locking portion y, the front end faces of the four corners of the rear half-side rectangular tubular portion 11b of the body portion 11 projecting radially from the cylindrical portion 11a come into contact with each other. The joining portion z serves as the stopper S which is formed on the inner wall surface of the contact holding hole 20 and regulates the insertion depth.

The joint surface between the outer peripheral surface of the rectangular tubular portion 11b and the inner wall surface of the contact holding hole 20 is formed by a stopper S
In addition, it is possible to tightly join without being affected by the abutting portion z, thereby effectively preventing leakage of the synthetic resin material when the body b is molded.

[0018]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 5 is a perspective view of the contact pin 1 in the connector according to the present invention, FIG. 6 is a side view of the same, FIG. 7 is a plan view of the same, FIG. 8 is a vertical side view of the same, and FIG. In the figure, 10 is a pin-shaped contact terminal on the front end, 11 is a trunk, 12 is a connection terminal on the rear end, and ww
.. Indicates a lance, and z indicates an abutment portion.

The contact pin 1 is formed by punching a metal plate having good conductivity into a predetermined shape and punching it out, and then bending it to form a pin at the front end side as shown in FIGS. The contact terminal portion 10 having a shape similar to a normal contact pin formed in a shape in which an intermediate trunk portion 11 and a connection terminal portion 12 on the rear end side are integrally and continuously formed, and the contact terminal portion 10 on the front end is As shown in FIG. 6, the metal plate is rounded and shaped into a hollow pin shape by abutting the side edges. Further, the connection terminal portion 12 on the rear end side has a pair of holding lugs 120 for holding the core wire 30 of the cord 3 to be connected, and is formed into a pair of opposed channel shapes. The terminal 31 of the core wire 30 stripped from the inner skin of the core wire 30 is connected by soldering or the like, and the holding lugs 120 are bent and caulked. There is no.

However, the front half of the body 11 is formed into a cylindrical shape as shown in FIG.
In addition, as shown in FIG. 11, the rear half of the cylindrical portion 11a is formed into a rectangular cylindrical shape in which the outer diameter of the cylindrical portion 11a is a vertical height and a horizontal width. It is formed on the shape 11b.

The cylindrical portion 11a and the rectangular cylindrical portion 11b
6 is formed by leaving a cut in the boundary between them, leaving the left and right central portions of the ceiling and the floor plate in the state of FIG. 6 so that the cylindrical portion 11a and the square tubular portion 11b are formed.
Are formed separately from each other, but are continuously formed without making a cut in this boundary portion, and are formed so as to be squeezed out, so that the cylindrical portion 11a and the rectangular cylindrical portion 11b are formed. In some cases.

The cylindrical portion 11a and the rectangular tubular portion 1
A stopper S is provided in the contact holding hole 20 of the insulator 2 so that four corners of the square tubular portion 11b projecting on the outer periphery of the cylindrical portion 11a are formed in the contact holding holes 20 of the insulator 2 by forming the 1b.
And is formed at an abutting portion z that regulates the insertion depth of the contact pin 1 to be inserted into the holding hole 20.

The cylindrical portion 11a has a rectangular cylindrical portion 11a on its right and left sides except for the front end of the cylindrical wall.
b, a window hole-shaped notch 110 reaching the front edge of the cylindrical portion 11a is formed in the notch 110, and the front edge side is connected to the cylindrical wall of the cylindrical portion 11a by a tongue-shaped portion cut and raised thereby. As shown in FIG. 7, lances w and w are formed so that the rear end side expands right and left as shown in FIG.

Further, as shown in FIG. 8, the rectangular tubular portion 11b is vertically arranged on the rear end side of the portion forming the ceiling toward the portion forming the floor plate of the rectangular tubular portion 11b. As shown in FIG. 8, the bent walls 111 are formed at the rear ends of the portions to be the floorboards.
A projecting ridge 112 is formed to abut on the front surface of the lower edge of 111.

Next, FIG. 12 is a side view of the insulator 2 used to hold the contact pins 1 configured as described above, FIG. 13 is a front view of the same, FIG. 14 is a rear view of the same, and FIG. Reference numeral 2c denotes a body, and reference numerals 20 ... denote contact holding holes formed in the body 2c.

The insulator 2 is formed of a synthetic resin material, which is an insulating material, into a predetermined shape so as to conform to the shape of the connector main body a of the connector A to be assembled. At the time of the formation, the contact pins 1 are fitted. 13 and 14, the contact holding holes 20 to be inserted and assembled are aligned and formed.

Conventionally, the insulator 2 is usually divided into a first half 2a and a second half 2b as shown in FIG. 3 and separately molded, and these are fitted together after molding to be integrated. The joining surface at this time constitutes a locking portion y which abuts against a lance w · w formed on the contact pin 1. The body 2c is formed so as to be integrally continuous without being divided into the rear half.

Each of the contact holding holes 20 formed in the body 2c so as to have a number corresponding to the number of pins of the connector to be assembled and aligned in a predetermined arrangement state,
As shown in FIGS. 15, 16, and 17, a round-hole-shaped front end 20 a into which the cylindrical portion 11 a on the front half of the body 11 of the contact pin 1 is fitted, and a square cylinder on the rear half of the body 11. It is divided into a square hole-shaped intermediate portion 20b into which the shape portion 11b is fitted, and a rear end portion 20c into which the connection terminal portion 12 on the rear end side of the contact pin 1 is fitted, and each has a different cross-sectional shape.

That is, the intermediate portion 20b is formed in a square hole corresponding to the cross-sectional shape of the outer peripheral surface of the square tubular portion 11b on the rear half side of the body 11 of the contact pin 1, as shown in FIG.

As shown in FIG. 19, the front end portion 20a is a cylindrical portion 1 on the front half side of the body 11 of the contact pin 1.
1a is formed in a round hole corresponding to the cross-sectional shape of the outer peripheral surface, and the square hole-shaped intermediate portion 20b is viewed in rear view.
The parts corresponding to the respective intermediate parts of the four edges of
The regulating guides 21 for passing w are formed in a shallow groove shape.

The restriction guides 21 are provided with a pair of lances w, w on the contact pins 1 and therefore only need to be paired left and right or up and down. In order to be able to cope with the rotating state, it is formed at four locations, up, down, left and right.

The cross section of the front end 20 has a substantially round hole shape.
The rear end face of the portion 22... located between the regulating guide 21 and the regulating guide 21 has four corners of the square hole-shaped intermediate portion 20 b as shown by a chain line in FIG. A stopper S which is located on the front surface and which abuts with an abutting portion z formed on the front end face of the four corners of the rectangular tubular portion 11b of the contact pin 1 fitted into the intermediate portion 20b is formed. Become.

Further, the substantially round hole-shaped front end portion 20a
As shown in FIG.
Lance w when the contact pin 1 is inserted into
The interrupting groove 23 for allowing the lance ww to expand outward due to its spring property is provided in the range from the position corresponding to the rear edge of the w to the front end of the front end 20a. 21 are formed so as to be cut deeply, and the rear wall surface of the interruption groove 23 forms a locking portion y, y that engages with the rear end edge of the lance w, w.

It is sufficient that the interrupting grooves 23 are formed as a pair, but when the contact pin 1 is inserted into the contact holding hole 20, the rectangular cylindrical portion 11b of the body 11 thereof is inserted. Are rotated by 90 degrees with respect to the square-shaped intermediate portion 20b of the contact holding hole 20 so that the pair of lances w and w correspond to any of the interrupt grooves 23. It is provided in.

The rear end 20c of the contact holding hole 20 is
As shown in FIG. 21, it is formed in a square hole shape that is slightly larger than the cross-sectional shape of the intermediate portion 20b and is rotated by 90 degrees with respect to the intermediate portion 20b.

As a result, any one pair of the four corners that protrude to the outside of each of the four edges of the intermediate portion 20b is placed in the posture shown by the chain line in FIG. The guides G are provided to guide lances w, w extending laterally from the body 11 of the contact pins 1 inserted into the contact holding holes 20.

The rear end portion 20c may be provided so that the guides G for guiding the lances w project over the square hole-shaped intermediate portion 20b at a predetermined position in the outer peripheral direction. There is no need to mold it into a square hole,
As shown in FIG. 23, a round hole having a diameter corresponding to the outer diameter of the square hole-shaped intermediate portion 20b, and a pair of four edges of the square hole-shaped intermediate portion 20b at a part of the periphery thereof. In the case where the semi-circular guides G are formed so as to protrude outward at the center portion of the periphery in the longitudinal direction, as shown in FIG. It may be formed in an appropriate shape, for example, when it is provided at each outer portion of the four edges of the intermediate portion 20b at the central portion in the longitudinal direction.

The contact holding holes 20 formed in the insulator 2 are formed at a rear end portion 20c thereof into a square hole, and an intermediate portion 20b into which the body 11 of the contact pin 1 is fitted. .. Formed in a state rotated in the circumferential direction by 90 degrees with respect to the rear end 20.
.. may be formed in the same arrangement state as in the case where the square-shaped contact holding holes 20 are formed in the conventional insulator 2 as shown in FIG.

Thus, the intermediate portion 20b and the front end 2
0a is the arrangement state shown in FIG. 26 and FIG.

The contact pins 1 to be inserted into the contact holding holes 20 have guides G formed by forming lances w, w extending to the right and left thereof at four corners of a square-shaped rear end portion 20c. , And the body 11 is fitted into the middle part 20b and the front end 20a of the contact holding hole 20 to be fitted and inserted.

The outer peripheral surface of the cylindrical wall of the cylindrical portion 11a has a round hole-like front end of the contact holding hole 20 without affecting the engagement of the lances w, w formed by cutting and raising the cylindrical wall. The pin 20a comes into close contact with the inner wall surface of the portion 20a, and stably holds the pin-shaped contact terminal portion 10 continuing to the front end.

[0043]

As described above, the contact pin 1 in the connector according to the present invention is
When being inserted into the contact holding hole 20 and assembled and held in the contact holding hole 20, the square tubular portion 11b on the rear half side of the intermediate body 11
Is fixed to a fixed posture by fitting into the square hole-shaped intermediate portion 20b of the contact holding hole 20, so that the lance cut and raised from the cylindrical wall of the cylindrical portion 11a on the front half side of the intermediate body portion 11. w, w and round hole-shaped front end 2 of contact holding hole 20
The cylindrical portion 11a of the contact pin 1 is inserted into the round hole-shaped front end 20a of the contact holding hole 20 while ensuring engagement with the rear end surface of the interrupt groove 23 formed on the inner wall surface of the contact hole 0a. The pin-like contact terminal portion 10 at the front end can be stably held by the insulator 2 because it can be tightly supported by the wall surface.

When the contact pin 1 is inserted into the contact holding hole 20, the front surfaces of the four corners of the rear half-side cylindrical portion 11 b projecting from the outer periphery of the front half-side cylindrical portion 11 a correspond to the abutment portion z. And a square hole-shaped intermediate portion 2 just before the entrance of the round hole-shaped front end portion 20a of the contact holding hole 20.
0b, which comes into contact with the front walls at the four corners, and the front walls at the four corners are used as stoppers S so as to be maintained at a predetermined insertion depth. An abutting portion z that regulates the insertion depth by a square tubular portion 11a formed on the rear half side of the body portion 11 and a square hole-shaped intermediate portion 20b formed in the contact holding hole 20 corresponding to the square tubular portion 11a. The stopper S can be formed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a contact pin in a conventional connector.

FIG. 2 is a vertical sectional side view of the contact pin according to the first embodiment.

FIG. 3 is a longitudinal sectional side view in a process of assembling the contact pin to the insulator of the contact pin;

FIG. 4 is a partially cutaway side view of the connector assembled by assembling the contact pins according to the first embodiment.

FIG. 5 is a perspective view of a contact pin in the connector according to the present invention.

FIG. 6 is a side view of the contact pin.

FIG. 7 is a plan view of the contact pin.

FIG. 8 is a vertical sectional side view of the contact pin.

FIG. 9 is a front view of the same contact pin.

FIG. 10 is a vertical sectional view of the contact pin, taken along line II in FIG. 6;

FIG. 11 is a II-I view of the contact pin in FIG. 6;
It is an I-line vertical sectional view.

FIG. 12 is a side view of the insulator on which the contact pin is assembled.

FIG. 13 is a rear view of the insulator.

FIG. 14 is a front view of the insulator.

FIG. 15 is a longitudinal sectional side view showing a state in which a contact pin of a contact holding hole of the insulator is fitted.

FIG. 16 is a cross-sectional plan view of the contact holding hole with the contact pin inserted therein.

FIG. 17 is a longitudinal sectional side view showing a state where the contact pins of the contact holding holes are fitted.

FIG. 18 shows the contact holding hole in FIG.
FIG. 3 is a sectional view taken along line I-III.

19 is a view showing the IV of the contact holding hole in FIG.
FIG. 4 is a sectional view taken along line IV.

FIG. 20 is a view showing V- in FIG.
It is a V line sectional view.

FIG. 21 is a rear view of the contact holding hole.

FIG. 22 is an explanatory diagram of an operation of the contact holding hole in the above.

FIG. 23 is a rear view of another embodiment of the contact holding hole.

FIG. 24 is a rear view of still another embodiment of the contact holding hole.

FIG. 25 is an explanatory diagram of a state where the contact pins are inserted into the contact holding holes.

FIG. 26 is an explanatory diagram of a fitting state of the rectangular cylindrical portion of the contact pin in the contact holding hole of the above.

FIG. 27 is an explanatory diagram of a fitted state of the cylindrical portion of the contact pin in the contact holding hole of the above.

FIG. 28 is a side view of another conventional contact pin.

FIG. 29 is a partially cutaway side view of the same.

FIG. 30 is a longitudinal sectional side view showing a state where the actuator is assembled to the above-described insulator.

[Explanation of symbols]

A: Connector, a: Connector body, b: Body, G: Guide, S: Stopper, CR1: Contact room, CR2
... small diameter chamber, CR3 ... second contact chamber, p ... reinforcement pin,
t: stop, w: lance, y: locking part, z: abutting part, 1 ...
Contact pin, 10 contact terminal part, 11 body part, 11
a: cylindrical portion, 14b: rectangular tube portion, 11f: front half side, 1
1r: second half side, 110: notch, 111: bent wall, 11
2 ... ridge, 12 ... connection terminal part, 120 ... holding lug, 13
... shoulder, 2 ... insulator, 2a ... first half side, 2b ...
2nd half, 2c ... body, 20 ... contact holding hole, 20
0: small diameter portion, 20a: front end portion, 20b: middle portion, 20c
... Rear end part, 21 ... Regulatory guide, 22 ... Part, 23 ... Engraving groove, 24 ... Locking shoulder, 3 ... Cord, 30 ... Core wire, 31 ... Terminal part, 62 ... Locking shoulder.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 13/04 H01R 13/42 H01R 23/02

Claims (1)

(57) [Claims] 1. A metal plate is punched and bent into a predetermined shape to form a pin-shaped contact terminal portion 10 on the front end side and a middle body portion 11.
In the contact pin 1 of the connector, which is formed in such a manner that the connection terminal part 12 on the rear end side and the connection terminal part 12 on the rear end side are continuous back and forth, the intermediate body part 11 is formed into a cylindrical part 11a whose front half is cylindrical.
In the second half side is formed in rectangular tubular portion 11b forming a rectangular tube, their
The front end surface of the corner to appear tension on four sides from the cylindrical portion 11a in the front view of the square tube-shaped portion 11b of les, insulator 2
Corresponding to the square tubular portion 11b of the contact holding hole 20 of FIG .
Corresponding to the rectangular hole-shaped intermediate portion 20b and the cylindrical portion 11a
Intermediate portion at the connection portion with the round hole-shaped front end portion 20a
Stopper S formed by four corner walls at the front end of 20b
Are formed at the abutment portion z which abuts against the cylindrical portion 11a.
In the cylindrical wall, the left and right edges of the rectangular cylindrical portion 11a in rear view
The front end side is continuous with the cylinder wall at the part located in the middle of the top and bottom
Cut off the tongue-shaped lance w ・ w
The lance w, w
The rear surface of the inner wall surface of the round front end portion 20a of the holding hole 20
Of the four edges of the square hole-shaped intermediate portion 20b
Form at least the part corresponding to each middle part of the left and right margins
To be engaged with the rear end face of the molding groove 23 to be provided.
A contact pin in the connector.