JPS62168354A - Electric connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electrical connectors, and more particularly to electrical connectors suitable for printed circuit boards.

2. Description of the Related Art Conventionally, as shown in FIG. 1 of the accompanying drawings, a printed circuit board 1 is used.
A printed circuit board connector 20 is used to make an electrical connection with the circuit conductor of the circuit board.

The details of this conventional printed circuit board connector 20 are illustrated in FIG. This connector 20 has a female contact 21
It consists of a female housing 22 in which a plurality of female contacts 23 are arranged, and a male housing 24 in which a plurality of female contacts 23 are arranged. The male housing 24 is installed on the printed circuit board 10 to be connected, and the connecting portion 23A of each female contact 23 passes through a corresponding through hole in the printed circuit board 10 and is inserted into the printed circuit board 10 as indicated by reference numeral 11. Corresponding circuit conductors on the board 10 and dip soldering are electrically connected to each other by dip soldering or the like. on the other hand,
The female housing 22 is fitted into the male housing 24 and has a hanging structure, and the female contacts 21 disposed in the female contact array openings 22A usually have a shape as shown in the drawing. This conventional female contact 21 is usually of a crimping type formed by punching and bending a single piece of conductive sheet with spring properties. The structure of this conventional female contact 21 has a female contact portion 21Δ, a core crimping portion 21B, and a covering crimping portion 21C arranged in this order in the contact insertion direction. . Furthermore, this female contact 21 usually has a locking portion 21D for fixing it within the array opening 22A. In each female contactor 21, the peeled core wire portion 31 is crimped and connected to the core wire crimping portion 21B, and the covering portion 32 is connected to the covering crimping portion 2IC.
A connecting wire 30 is connected by crimp connection. By fitting the female housing 22 wired in this way into the male housing 24 installed on the printed circuit board 10 to create the state shown in FIG. It is inserted between the contact portions 21A of the child 21 and makes electrical contact therewith. In this way, electrical connection with the conductor can be made 100 times on the printed circuit board.

Problems to be Solved by the Invention However, in such a conventional connector, the model contact 21 has a structure in which the contact portion 21A, the core wire crimping portion 21B, and the covering crimping portion 2IC are arranged in a straight line in the contact insertion direction. Therefore, there is a limit to shortening the overall length of the contact in the contact insertion direction. Therefore, the height of the housing that accommodates these contacts, that is, the dimension H from the top surface of the printed circuit board 10 to the end surface of the connector 20 in FIG. 1, has to be a certain height.

However, recently, as sets have become smaller and more dense,
There is a trend to reduce the spacing between printed circuit boards, so the height of the connectors used for these should be as low as possible, and connectors that do not require a reduction in the workability of the contact parts and crimping parts of the contacts. is becoming desired. In addition, in the structure of conventional contacts, the contact part, the core wire crimping part, and the insulation crimping part are in a straight line, so if you connect a wire that is too thick to the crimping part, the wire will be inserted into the contact part. There was a risk that the tips of the side contacts would collide, and there was also a limit to the diameter of the wire that could form mounds.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrical connector which overcomes the problems of the prior art as described above.

Means for Solving the Problems According to the present invention, there is provided an electrical connector comprising a housing and an electrical contact disposed within the housing, wherein the housing includes a contact open at one end of the housing. a housing chamber, and a female contact receiving opening communicating with the contact housing chamber at the other end opposite to the one end of the housing, and one side wall of the contact housing chamber of the housing is provided with the housing. A deflection locking arm is provided extending from the one end of the housing toward the other end, and a free end of the deflection locking arm is formed with a protrusion projecting into the contact receiving chamber, and the electrical contact The child has a female contact portion on the opposite side between the wire crimping portion and the covering crimping portion, and has a locking portion in front of the wire crimping portion, and has a locking portion in front of the wire crimping portion, and a mating portion of the female contact portion. The receiving direction of the female contact is parallel to the arrangement direction of the locking part, the core wire crimping part, and the covering crimping part, and the locking part projects toward a side opposite to the female contact part. When the electrical contact is inserted into the contact housing chamber of the housing from the one end, the locking portion is positioned at a position where the female contact portion faces the female contact receiving opening. is fixed in the contact accommodating chamber by engaging the tip i of the protrusion of the deflection locking arm.

Embodiments Next, the present invention will be explained in more detail with reference to embodiments of the present invention based on FIGS. 3 to 9 of the accompanying drawings.

FIG. 3 shows a perspective view of an example of a female contact used in the electrical connector of the present invention. This female contact 40 is formed by punching and bending a single conductive sheet with spring properties, as in the conventional case, but there is a gap between the core wire crimping part 41 and the covering crimping part n42. It has a structure in which a template contact portion 43 is arranged on the opposite side. A locking part 44 is provided at the tip of the core wire crimping part 41, and two punches are provided on the inner surface of the core wire crimping part 41 to ensure good electrical and mechanical contact with the core wire. Line 41/'.

is formed. A state in which the electric wire 30 is connected to the female contactor 40 is shown in a perspective view in FIG. As is clear from FIG. 4, this connection is made by crimping the core wire 31 of the peeled electric wire 30 to the core wire crimping part 41 and crimping the covering part 32 to the covering crimping part 42.

FIG. 5 is a perspective view showing a female housing of a printed circuit board connector as an embodiment of the present invention, in which the contacts 40 connected as shown in FIG. 4 are disposed. The female housing 50 is preferably partially molded with an elastic insulating material, and mainly has a plurality of female contact chambers 51 and a protrusion 52A projecting into each chamber 51 at the tip. a deflection locking arm 52, a recess 53 that receives and fits a mating male housing, and a plurality of female contacts that open in the recess 53 and receive each of the mating female contacts. It has a receiving opening 54.

Figure 6 shows the female housing 50 in Figure 5. Ty4 in Figure 4.
In order to explain the state in which the female contacts are arranged in this way, a partially cutaway state is shown. As clearly shown in FIG. 6, when the female contact 40 is inserted into the receiving chamber 51 of the female housing 50, the contact 40
The locking portion 44 at the tip of the deflection locking arm 52 is connected to the projection 52 at the tip of the deflection locking arm 52.
A, and as the contactor 40 is inserted, the deflection locking arm 5
2 is deflected outwards due to its elasticity. Further, when the contactor 40 is inserted, the locking part 44 passes over the protrusion 52A, and at this time, the deflection locking arm 52 returns to its original position due to its elasticity. Return to Therefore, as shown in FIG.
4 engages with the tip end surface of the deflection locking arm 52, and the contactor 40
is fixed in the storage chamber 51 so that it does not come out. At this time, the female contact portion of the female contact 40 is aligned with the female contact receiving opening 54 of the female housing 50.

FIG. 7 is a sectional view showing a state in which the female housing 50 is fitted into the mating male housing 60 installed on the printed circuit board 10. The male housing 60 is the female housing 5
The female contact 61 is received in the recess 53 of 0.
The female contact 43 of the female contact 40 is electrically contacted through the female contact receiving opening 54 of the female housing 50 .

In the electrical connector according to the embodiment of the present invention described above, contacts having the shape as shown in FIG. Contacts may be provided, of which 2.3 variants will be briefly explained with reference to FIGS. 8 and 9.

FIG. 8 shows an example of a female contact suitable for contacting a flat female contact, and this female contact 70 is also made of a single conductive sheet with spring properties. It is punched and bent, and has a core crimping part 71 and a covering crimping part 72.
There is a female contact B73 on the opposite side between them, and a locking part 74 is provided at the tip of the core wire crimping part 71.

The male contact 75 on the eye side is connected to the female contact portion 7 in the direction of the arrow.
It is designed to be inserted into and come into contact between 3.

FIG. 9 shows an example of a female contact suitable for contacting a flat female contact, and this female contact 90 is also made of a single conductive sheet with spring properties. It is punched and bent, and has a core crimping part 91 and a covering crimping part 92.
A female contact portion 93 is provided on the opposite side between them, and a locking portion 94 is provided at the tip of the core wire crimping portion 91.

The mating female contact 95 is connected to the female contact portion 93 in the direction of the arrow.
This contactor 90 is designed to be inserted into the upper
is particularly suitable for obtaining electrical contact by sandwiching the female contact 95 between the wall surface of the housing on which the contact 90 is disposed and the female contact portion 93.

Effects of the Invention Since the electrical connector of the present invention has the above-described configuration, it can exhibit the following special effects.

That is, in the electrical connector of the present invention, a female contact portion is provided between the core wire crimping portion and the covering crimping portion on the opposite side thereof,
By making the receiving direction of the mating female contact of the female contact part parallel to the arrangement direction of the core wire crimping part and the covering crimping part, the distance between each part can be minimized, and the mating part The overall height of the contact in the insertion direction can be reduced, and the height of the connector housing for accommodating this contact in the insertion direction of the mating contact can be kept very low. Furthermore, in the contact in the electrical connector of the present invention, the locking portion can be disposed at the tip of the contact, and the locking portion can be made to protrude to the side opposite to the female contact portion. When this contact is inserted into the contact receiving chamber of the housing from one end, the locking portion is engaged with the protrusion of the deflection locking arm of the housing at a position where the female contact portion faces the female contact receiving opening. By engaging with the tip of the part, it can be fixed within the contact housing chamber. Therefore, in general, for this type of contact,
Although it is difficult to increase the height or length of the locking part for fixing to the housing, and it is difficult to provide a locking part with great elasticity, according to the configuration of the present invention, the housing can be fixed to the housing as described above. Since it is easily possible to provide a deflection locking arm and give it a large amount of elasticity, there is no need to provide that much elasticity to the locking portion of the contact, and the size of the locking portion can be increased ( Therefore, even if a locking portion is provided at the tip of the contact, the size of the housing of the connector can be suppressed.

In addition, according to the structure of the contactor of the electrical connector of the present invention, the following effects can also be obtained.

(1) Since the distance between the core wire crimping part and the insulation crimping part can be made wider than before, it is possible to avoid crimping the core part of the wire on the insulation crimping part side during crimping work, or crimping the insulation part on the core wire crimping part side. There is less risk of crimping, and the number of crimping defects is greatly reduced compared to conventional products.

(2) The locking part placed at the tip of the contact prevents the core wire from jumping forward more than necessary when the wire is crimped with the core wire crimping part. It can also act as a wire positioning member.

(3) Since the contact part is located on the opposite side from the wire crimping part and the covering crimping part, the wire crimping part and the covering crimping part are independent of the direction in which the mating contact contacts the contact part. , even wires with a considerably large diameter can be connected.

[Brief explanation of drawings]

FIG. 1 of the accompanying drawings is a schematic view showing an example of the use of a conventional printed circuit board connector, FIG. 2 is a partially cutaway perspective view showing the printed circuit board connector of FIG. 1 in detail, and FIG. FIG. 4 is a perspective view showing an example of a contact provided in the electrical connector of the present invention, FIG. 4 is a perspective view showing a state in which an electric wire is connected to the contact shown in FIG. 3, and FIG. FIG. 6 is a perspective view showing an example of a female housing of a printed circuit board connector as an embodiment of the present invention in which contacts are arranged, and FIG. 6 is a female housing connected to the female housing of FIG. 5 as shown in FIG. 4. FIG. 7 is a partially cutaway perspective view showing a state in which the contacts are arranged; FIG. 7 is a cross-sectional view showing a state in which the female housing in FIG. FIG. 9 is a perspective view showing various modifications of the contactor arranged in the electrical connector of the present invention. 10... Printed circuit board, 40... Female contact, 41... Core wire crimping part, 42...
... Covering crimping part, 43 ... Female contact part, 44
...Latching portion, 50...Female housing, 51...Female contact storage chamber, 52...
Deflection locking arm, 52A...protrusion, 53...
... recess, 54 ... female contact receiving opening,
60...Male housing, 61...
Female contact. Figure 1 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] An electrical connector comprising a housing and an electrical contact disposed within the housing, the housing having a contact receiving chamber open at one end of the housing, and the other end opposite to the one end of the housing. and a male contact receiving opening communicating with the contact receiving chamber, and one side wall of the contact receiving chamber of the housing is provided with a male contact receiving opening that extends from the one end of the housing toward the other end. A deflection locking arm is provided, and a free end of the deflection locking arm is formed with a protrusion projecting into the contact housing chamber, and the electrical contact is connected to the wire crimping portion. It has a female contact part on the opposite side to the covering crimping part, and has a locking part in front of the core wire crimping part, and has a locking part for receiving a mating male contact of the female contact part. The direction is parallel to the arrangement direction of the locking part, the core wire crimping part, and the covering crimping part, and the locking part protrudes toward the side opposite to the female contact part, and the electric contact When the child is inserted into the contact receiving chamber of the housing from the one end, the locking portion engages the deflection locking arm at a position where the female contact portion faces the male contact receiving opening. An electrical connector, wherein the electrical connector is fixed within the contact housing chamber by engaging with a tip of the protrusion.