JPH10247544A - Multielectrode connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a longitudinal length of a contact pin, and prevent an escape at fitting inserting time by arranging notch parts in longitudinal intermediate parts of left and right side wall of a contact pin body part, forming front end parts of its front side walls as lances, diametrically expanding its front end parts in holding holes molded in an insulator, and engaging a forming step surface with the locking edge on the lance rear edge. SOLUTION: In a contact pin 1, a pin-shaped contact terminal part 10 is formed on the front end side by molding an elastic metallic plate by blanking in a prescribed shape and bending and molding, and a channel-shaped body part 11 is formed in an intermediate part, and a channel-shaped connecting terminal part 12 is formed on the rear end side. In lances W and W formed in its body part 11, longitudinal intermediate parts of upper edge parts of left and right side walls of its body part 11 are notched, and the rear edges of front end parts can be made to function as the lances by outward opening front edge parts of the side walls forward more than its notch parts. Base end parts 20a of contact holding holes 20 are formed as a square hole of a quadrangular shape, and intermediate parts 20b are formed as a slightly small diameter, and front end parts 20c are formed as a large diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact holding hole which penetrates in an axial direction to a plug-shaped insulator made of a synthetic resin material among multipolar connectors used as connection terminals of office automation equipment and the like. Are formed in parallel, a contact pin formed from a metal plate is inserted and held in each of the contact holding holes, and each core wire of the cord is connected to a connection terminal portion on the rear end side of the contact pin. The present invention relates to an improvement on a multi-pole connector to be assembled and assembled.

[0002]

2. Description of the Related Art In the above-described multi-pole connector, a contact pin inserted in a contact holding hole formed in an insulator formed of a synthetic resin material is held in a fitted state. A metal plate obtained by stripping it into a predetermined shape is bent and formed, and as shown in FIGS. 1 and 2, a pin-shaped contact terminal portion 10 is provided on the front end side.
To form a channel-shaped body 11 in the middle,
When making into a form having a channel-shaped connection terminal portion 12 formed on the rear end side, a cut along the front-rear direction is provided at the upper edge of the rear half of the left and right side walls of the channel-shaped body portion 11, Thereby, a lance w · w that expands and contracts to the left and right is formed.

As shown in FIGS. 3 and 4, an insulator 2 through which the contact pin 1 is inserted is provided with a body 11 of the contact pin 1 on an inner wall surface of a contact holding hole 20. Lance w / w
An engaging portion y, y that engages with the rear end edge of the rim is formed.

Accordingly, the contact pin 1 in which the core wire 30 of the cord 3 is connected to the connection terminal portion 12 on the rear end side is provided.
Is inserted into the contact holding hole 20 of the insulator 2, the abutting portion z formed on the front end side of the body 11 of the contact pin 1 forms a rear surface of the reduced diameter portion on the front end side of the contact holding hole 20. At the predetermined insertion depth, the lances ww formed on the upper edges of the rear half of the left and right side walls of the body 11 of the contact pin 1 form the contact pin 1. The metal plate is opened to the left and right due to the elasticity of the metal plate, and the rear edge of the metal plate is engaged with the engaging portions y, y formed on the inner wall surface of the contact holding hole 20 of the insulator 2 to escape backward. Is to be blocked.

[0005]

The above-mentioned multipolar connector has a lance formed on the body 11 of the contact pin 1 in order to prevent the contact pin 1 inserted into the contact holding hole 20 of the insulator 2 from coming off. By forming ww on the upper edge of the rear half of the left and right side walls of the body 11 so as to expand and contract in the left and right direction, the front and rear length of the body 11 can be adjusted by the lance w The length of the contact pin 1 becomes longer and the front and rear length of the contact pin 1 becomes longer, which increases the manufacturing cost; and the left and right side walls of the body 11 form the lances w and w. Therefore, when the contact pin 1 is inserted into the contact holding hole 20, the contact pin 1 is easily bent and the damage is increased. Also, a contact holding hole 2 through which the contact pin 1 is inserted.
Since the length before and after 0 must be increased, the insulator 2 becomes longer, and there is a problem that the multi-pole connector A to be assembled becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem occurring in the conventional means. The present invention has been made to reduce the front-rear length of the contact pin 1 and to maintain the strength of the contact pin 1 without deteriorating its strength. It is an object of the present invention to provide a new means for enabling the contact pin 1 to be held in the contact holding hole 20 of the insulator 2 when inserted to a predetermined insertion depth so that the contact pin 1 does not come out. I do.

[0007]

According to the present invention, as a means for achieving the above-mentioned object, a pin-shaped contact terminal portion 10 is formed at the front end side from a metal plate having elasticity. A contact pin 1 having a channel-shaped connection terminal portion 12 at the rear end side, and forming left and right side walls 11 of the body portion 11.
A notch is provided at an intermediate portion before and after 0.110, a front end of the side wall 110.110 is formed in a lance ww in front of the notch, and a contact holding hole 20 formed in the insulator 2 is provided in the contact holding hole 20. The diameter of the front end 20c of the lance w is enlarged, and a stepped surface u formed by the enlarged diameter is formed in an engaging portion y which engages with a locking edge w 'of a rear edge of the lance w. A pole connector is proposed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a contact pin
In the above, a metal plate that has been formed into a predetermined shape is bent and formed, and a pin-shaped contact terminal portion 10 is formed on the front end side,
A channel-shaped body 11 is formed in the intermediate portion behind the contact pin, and a channel-shaped connection terminal portion 12 is formed on the rear end side of the contact pin. The contact pin is formed on the insulator 2. Regarding the formation of lances w and w for preventing escape when inserted into the hole 20 on the left and right side walls of the body 11 of the contact pin 1,
There is no difference from the conventional contact pin 1.

However, the body 11 of the contact pin 1
The lances w and w formed at the front end portions of the left and right side walls 110 and 110 of the body 11 formed in the shape of a channel are used as they are so as to function as the lances w and w.

[0010] Thus, the left and right side walls 110 of the body 11 can be omitted from the latter half where the lances w, w are formed by the conventional means.
Shorten the front and back length of

However, the trunk portion 11 is formed between the connecting terminal portion 12 which is continuous behind the trunk portion 11 and a connection portion between the contact pins 1... And the core wires 30.. The partition wall 112 for blocking resin leakage at the time of contact inside the contact holding hole 20 is cut and raised from the bottom wall 111 of the body 11 to a height corresponding to the vertical height of the inner surface of the contact holding hole 20. From doing
It is necessary that the partition wall 112 has a margin to be cut and raised to a predetermined height, and when the partition wall 112 is raised vertically, it is held in a state of being embraced from the left and right. It is also necessary to have a margin for forming the holding pieces 113 and 113. Therefore, the front and rear lengths of the body 11 are determined by the holding pieces 113 and 113 and the partition
Is set to a length that can be formed.

Further, in the insulator 2 in which the contact holding holes 20 for inserting the contact pins 1 are formed in parallel, the respective contact holding holes 2 are formed.
0, a through hole 21 having a diameter through which the pin-shaped contact terminal portion 10 on the front end side of the contact pin 1 penetrates is formed. A restricting portion s which abuts with an abutting portion z formed by a funnel-shaped portion which transitions from the portion 10 to a channel-shaped body portion 11 is formed. Lances formed on the side walls 110
are formed by a stepped surface u formed by enlarging the diameter of the front end of the contact holding hole 20, and the abutment portion z of the contact pin 1 is restricted. When the lance s reaches the predetermined insertion depth, the lances w and w are engaged with the engagement portions y to prevent escape.

The above-mentioned lances w.w formed on the left and right side walls 110 of the body 11 of the contact pin 1.
Is provided with a metal plate for forming the contact pins 1 when the upper ends of the left and right side walls 110 are opened outward and inserted into the contact holding holes 20 of the insulator 2. When it is in a state of being compressed by elasticity and reaches a predetermined insertion depth, the left and right side walls 110 are located at the enlarged diameter portion on the front end side of the contact holding hole 20, and the rear edge thereof is enlarged. Are engaged with the engaging portions y formed by the stepped surface u on the rear surface of the portion.

[0014]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for the same constituent members.

FIG. 5 is a side view of a multi-pole connector embodying the present invention, FIG. 6 is a side view showing a state where the connector is fitted and connected to a socket on a device provided in an office automation device or the like, and FIG. Front view of the same multi-pole connector,
FIG. 8 is a vertical side view of the multi-pole connector,
a is a body formed of a synthetic resin material, b is a shell mounted on a body a formed in a cylindrical shape of a metal material, 2 is an insulator formed in a shell b of a synthetic resin material and mounted in a shell b, 1 ... are contact pins held in contact holding holes 20 formed in the insulator 2, c is a clamp arm for holding a cord having each core wire connected to the contact pins 1, and d is a slide provided on the outer peripheral side of the shell b. The cap e is a different kind of contact pin held by the insulator 2 separately from the contact pins 1.
Denotes a socket provided on the device side, and g denotes a lock spring provided so as to be held in a state fitted to the socket f.

FIG. 9 is a plan view of the contact pin 1 used in the means of the present invention, FIG. 10 is a side view of the same, and FIG. 11 is a vertical sectional side view of the same.

The contact pin 1 is formed by bending an elastic metal plate into a predetermined shape and bending the metal plate to form a pin-shaped contact terminal portion 10 on the front end side, and a channel in the middle. It is the same as the conventional one in that it is formed in a form in which a body-shaped body 11 is formed and a channel-shaped connection terminal 12 is formed on the rear end side.

However, the lances w, w formed on the body 11 are notched at front and rear intermediate portions of the upper edges of the left and right side walls 110, 110 of the body 11, and the lances w. Also, by forming the front end portions of the front side walls 110 and 110 so as to open outward, the rear edge of the front end portion serving as the lance is formed as a locking edge w ′ and functions as a lance. I have.

On the bottom wall 111 of the body 11, there is provided a partition wall 112 which rises to a height corresponding to the vertical height of the inner surface of the contact holding hole 20 formed in the insulator 2.
The lances w, w are formed by cutting and raising the rear portion from a substantially corresponding portion of the rear edge, and holding pieces 113, 113 for holding the upper end portion of the partition wall 112 from the front,
Utilizing a notch for forming the lance ww, the left and right side walls 110 of the body 11 at the rear thereof are used.
Are cut in the front-rear direction to form holding pieces 113, 113. The holding pieces 113, 113 are bent inward to cut and raise from the bottom wall 111 to form the side walls 110, 1.
The partition wall 112 raised up to the same height as 10 is held from the front to hold the partition wall 112 in that position.

By this, the front end side of the left and right side walls 110, 110 of the body portion 11 is formed as a lance w, w, so that the body portion 11 is longer than the body portion 11 of the contact pin 1 in the conventional means. Is much shorter.

Further, a serration portion 120, which is bent substantially in a V-shape and shortly rises as shown in FIG. As shown in FIG. 14, a lug piece 121 which is bent substantially in a U-shape and rises long to embrace the covering portion of the cord 3 is formed in parallel in the front-rear direction. , Serrations 122 are formed.

An insulator 2 for holding the contact pins 1 is formed of a synthetic resin material into a plug shape which fits in a shell b made of a metal material. Contact pin 1
The contact holding holes 20 for holding are formed in parallel so as to penetrate back and forth, and the contact holding holes 20 have different types of contact pins e shown in FIGS. To explain the insulator 2 of the embodiment which is not described, each of the contact holding holes 20 is formed in a square hole shape having a substantially rectangular cross section.

The base end 20a (right end in FIG. 15) of the contact holding hole 20 is connected to the connection terminal 12 on the rear end side of the contact pin 1 as shown in FIG.
Is formed in a square hole having an inside diameter into which the lug piece 121 is fitted, and an intermediate portion 20b of the contact holding hole 20 is a square hole having an inside diameter into which the body 11 of the contact pin 1 is fitted. The diameter of the hole 20 is slightly smaller than the base end 20a. Further, the front end portion 20 of the contact holding hole 20 is formed.
c is formed in the shape of a square hole having a diameter somewhat larger than that of the intermediate portion 20b.

The front end of the square hole at the front end 20c of the contact holding hole 20 is shown in FIGS.
As shown in FIG. 2, a lattice frame 4 crossing in a cross shape is formed, and a small-diameter through hole through which a pin-shaped contact terminal portion 10 on the front end side of the contact pin 1 is fitted in a central portion thereof. 21 is established, and at a portion on the rear side of the through hole 21,
From the pin-shaped contact terminal portion 10 of the contact pin 1 to the body portion 1
The abutting portion z formed by the funnel-shaped portion that moves to 1 abuts, and a regulating portion s that regulates the insertion depth of the contact pin 1 is formed.

This cross-shaped lattice frame 4 is provided on the inner surface side of each of its four arm frames 40.
A ridge 41 extending in the front-rear direction is continuous with a thickness corresponding to a radial width of a stepped surface u formed by a diameter difference between the intermediate portion 20b and the front end portion 20c of the contact holding hole 20, and thereby, The stepped surface u is formed in an angle shape in a front view by four protrusions 41.
The contact holding hole 20 is located at each of the four corners on the rear surface side of the front end portion 20c.

Then, four step surfaces u which form an angle when viewed from the front are located at the four corners, respectively.
Are formed on the front end portion 20c of the body portion 11 of the contact pin 1 so as to form engaging portions y that engage with the locking edges w ′ and w ′ of the lances w and w.

The engaging portion y for engaging the locking edge w 'of the lance w only needs to have a pair of engaging portions y and y on the left and right for engaging the upper ends of the pair of lances w and w on the left and right. That is, when the contact pins 1 are inserted into the contact holding holes 20, the posture of the contact pins 1.
As shown in FIG. 17, there are four types of lances w and w, regardless of the posture of the four types, as shown in FIG. In order to automatically select a pair of symmetrical engaging portions y and engage with them, four engaging portions y are provided.

The contact holding hole 2
When the contact pins 1 are inserted into the contact pins 0, the contact holding holes 20 formed in the shape of square holes and the contact pins 1 formed in the shape of channels are fitted even if the posture thereof is random. As a result, one of the four postures is automatically selected as shown in FIG.
Is engaged with the engaging portion y.

[0029]

As described above, the multipolar connector according to the present invention is formed by bending a metal plate having elasticity into a predetermined shape and bending the metal plate so that the pin-shaped contact terminal portion 10 is formed on the front end side. An insulator for forming a contact pin 1 by forming a channel-shaped body portion 11 at an intermediate portion and a channel-shaped connection terminal portion 12 at a rear end side, and molding the contact pin 1 into a plug shape with a synthetic resin material. The lance w formed on the contact pin 1 to prevent the contact pin 1 from coming out when the contact pin 1 is inserted into and held in the contact holding holes 20. A notch is provided at an intermediate portion before and after the left and right side walls 110, 110, and the side wall 110, forward of the notch is provided.
A front end of the lance 110 is a lance w · w, and a rear edge facing the notch thereof is a locking edge w ′ · w ′, and an engagement formed on the inner surface of the contact holding hole 20 of the insulator 2 so as to engage with the engagement edge w ′ · w ′. Since the diameter of the portion y is enlarged at the front end side of the contact holding hole 20 and the stepped surface is formed in the engagement portion y, the body 1 of the contact pin 1 is formed.
1, the length of the front and rear portions can be shortened by the amount of forming the lance, and the contact holding hole 20 can be formed short, whereby the insulator 2 can be shortened and the multi-pole connector can be downsized. .

Further, the bottom wall 111 of the body 11 is separated from the partition wall 1.
12 is raised and raised vertically, and is held in a state of being raised by holding pieces 113 cut off from left and right side walls 110 of the body 11 to form the body. Since the front-rear length of the portion 11 can be reduced, the front-rear length of the contact pin 1 and the contact holding hole 20 can be reduced, so that the multipolar connector A can be downsized. Since the front and rear lengths of the cuts into the left and right side walls 110 of the 11 are short, the strength of the body 11 is not impaired, and the bending that occurs when the contact pin 1 is inserted into the contact holding hole 20 is bent. And breakage are reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional contact pin assembled to a multipolar connector.

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

FIG. 3 is a vertical side view of an insulator assembled to the multipolar connector according to the first embodiment.

FIG. 4 is a vertical sectional side view of the assembled state of the insulator.

FIG. 5 is a side view of a multi-pole connector embodying the present invention.

FIG. 6 is a side view showing a state where the multi-pole connector is assembled to a socket on the device side.

FIG. 7 is a front view of the same multi-pole connector.

FIG. 8 is a vertical cross-sectional side view of the same multi-pole connector.

FIG. 9 is a plan view of contact pins of the multipolar connector according to the first embodiment.

FIG. 10 is a side view of the same contact pin.

FIG. 11 is a vertical cross-sectional side view of the contact pin.

FIG. 12 is a front view of the same contact pin.

FIG. 13 is a cross-sectional view of the contact pin of FIG.
It is sectional drawing of the F line.

FIG. 14 is a cross-sectional view of the contact pin of FIG.
It is sectional drawing of the D line.

FIG. 15 is a longitudinal sectional side view of the insulator in which a contact pin is inserted.

FIG. 16 is a rear view of the insulator with a contact pin inserted therein.

FIG. 17 is a front view in a state where the contact pins of the insulator are fitted.

FIG. 18 is an explanatory view of a contact holding hole of the insulator according to the third embodiment.

[Explanation of symbols]

A: Multi-pole connector, a: Body, b: Shell, c: Crank arm, d: Slide cap, e: Different contact pin, f: Socket, g: Lock spring, s:
Regulating part, u: step surface, w: lance, w ': locking edge, y: engaging part, z: abutting part, 1: contact pin, 10: contact terminal part, 11: trunk part, 110: side wall , 111 ... bottom wall, 11
2 ... partition wall, 113 ... holding piece, 12 ... connection terminal part, 12
Reference numeral 0: serration portion, 121: lug piece portion, 122: serration, 2: insulator, 20: contact holding hole, 20a: base end portion of contact holding hole, 20b: middle portion, 20c: front end portion, 21: through hole portion , 3 ... code, 3
0: core wire, 4: lattice frame, 40: arm frame, 41: ridge.

Claims (2)

[Claims] 1. A pin-shaped contact terminal portion 10 is formed on a front end side, a channel-shaped body portion 11 is formed on an intermediate portion, and a channel-shaped connection terminal portion is formed on a rear end side from a metal plate having elasticity. The contact pin 1 provided with the notch 12 is formed, and a notch is provided at an intermediate portion before and after the left and right side walls 110 of the body 11, and the side wall 110.
The front end of 110 is formed as a lance w · w, and the contact holding hole 20 formed in the insulator 2 is formed by enlarging the diameter of the front end 20c of the contact holding hole 20.
A multipolar connector formed at an engaging portion y which engages with a locking edge w 'of a rear edge of the lance w. 2. A notch is formed at an intermediate portion before and after the left and right side walls 110 of the channel-shaped body 11 of the contact pin 1, and a side wall 110 in front of the notch is formed.
A partition wall 1 cut from the bottom wall 111 of the body 11 behind the notch, with the front end side of the lance formed as a lance w · w.
2. The multi-pole connector according to claim 1, wherein holding pieces 113 are formed for holding the holding member.