JPH0424832B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is used in the technical field of electrical contacts connected to electric wires, and particularly relates to electrical contacts installed in electrical connectors and the like. .

[Conventional technology]

BACKGROUND ART Conventionally, as an electric contact that is implanted in an electric connector or the like and is connected to an electric wire without soldering, there has been a pressure contact or a crimp type contact. The pressure contact type has a pressure contact piece that forms a pressure contact slit,
The coated electric wire is placed in the pressure welding slit and is directly pressed against the pressure welding slit without peeling off the coating, so that the core wire is brought into contact with the slit edge of the pressure welding slit. In addition, a crimp-type contact is used to perform crimp connection by peeling off a portion of the coating at the tip of an electric wire and crushing the crimp piece of the contact against the exposed core wire.

The above-mentioned pressure-welding type contacts are limited in current capacity because the contact area of the core wire with the pressure-welding piece is smaller than that of the crimp-type contact. However, the pressure-welding process is relatively easy. Therefore, it is cheap. Furthermore, since it is possible to connect wires in mass production, it is often used for signal lines with a large number of circuits and a small current capacity in electronic equipment and the like.
On the other hand, crimp type contacts have a large current capacity and are therefore mainly used in power lines.

[Problem that the invention seeks to solve]

The above-mentioned pressure contact type and crimp type contact have the following problems because they are constructed separately.

In recent electronic devices, high-density packaging is required, which creates a need for signal lines and power lines to be randomly arranged within the same connector. At that time, the press-fit type contact and the crimp-type contact are constructed as separate bodies, and since their configurations are completely different, the structure of the contact receiving hole of the connector is also different, making it difficult to arrange the signal lines and power lines randomly. do not have. Therefore, in order to meet usage requirements, it is necessary to prepare many types of specific connectors and contacts, resulting in high costs, and the large number of types of connectors and contacts makes it difficult to manage them. It was becoming.

High-density mounting has been difficult because a signal line and a power line cannot be connected to one contact at the same time.

If you want to change the signal line and power line in a mounted circuit to which a connector is attached, the connector of the mounted circuit must be removed and replaced with another connector, which takes time and increases costs. Furthermore, it has been difficult to maintain the mounted circuits.

In response to users' requests for a variety of wire connection combinations, we visually check and select the contacts one by one, manually connect the various wires to the contacts, and then attach them to the connector housing. Since the installation is done manually, it takes a lot of time and costs are high.

[Means and actions for solving problems]

In order to solve the above-mentioned problems of the conventional electric contact, the present invention has a contact part for connecting with the other contact at the front part and a connecting part for connecting the electric wire at the rear part. In the electrical contact, the connection part has a pressure welding part in the front part having a pressure welding piece that bites into the sheath of the electric wire and comes into contact with the core wire, and a rear part of the pressure contact part which is crushed and has an exposed core wire of the electric wire. a crimping part having a crimping piece to be crimped, the position of the crimping wire of the crimping piece and the crimping wire position of the crimping piece are substantially on the same line, and the crimping part has a plurality of crimping pieces that are crimped to each other in a longitudinal direction. The pressure contact grooves of each pressure contact piece are arranged in parallel, and the pressure contact grooves of each pressure contact piece are formed to gradually become wider toward those located at the rear.

According to the present invention configured as described above, when it is desired to connect an electric wire to a contactor by pressure contact, the end of the wire is connected by pressure contact with the pressure contact piece provided at the front of the connection section, and also the wire is connected by pressure contact. When it is desired to do so, the core wire of the electric wire, whose coating is removed at the tip and the core wire is exposed, is brought to the crimping section and the crimp piece is crushed to complete the connection. Pressure or crimp connections are selectively made on the same line. Further, when performing the above-mentioned pressure welding connection, depending on the thickness of the core wire of the electric wire, a thin wire is pressure welded by a pressure welding piece at the front, and a thick one is welded by a pressure welding piece at the rear. In addition, during the above-mentioned pressure-welding piece connection, the crimp piece can be used for the purpose of holding the electric wire in the covering part at a rear position of the pressure-welding part.

In this way, it is possible to connect wires by both press-fitting and crimp-bonding with one type of contactor, and in the case of press-fitting connections, it is possible to handle core wires of different thicknesses.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, the contact 1 has a female contact part 10 at the front for receiving a mating male contact (not shown) from the front and making an electrical connection, and a rear part for connecting an electric wire. It has a connection part 20.

The contact portion 10 has contact portions 13, 13 extending forward and bent inward from side plates 12, 12 standing on both sides of the substrate 11, and a throat portion 14 at the front portion of the contact piece. is formed. The substrate 11 has a contact receiving hole 51 (see FIG. 4) of the insulating housing 50 which, when inserted into the contact receiving hole 51, engages with a stepped portion (not shown) in the receiving hole 51 to prevent the contact from coming off. A locking tongue piece 15 having elasticity is formed to protrude downward. Even after the locking tongue piece 15 is locked and fixed in the accommodation hole 51, it can be easily unlatched using a simple tool (not shown).
The contactor can be easily removed from the housing hole 51.

The connection section 20 is divided into three regions, and consists of a pressure contact section 20A, a pressure bonding section 20B, and a covering holding section 20C in order from the front.

The pressure contact portion 20A includes a first pressure contact piece 21 formed by cutting and raising the bottom of the substrate 11, and a side plate 1.
A second press-contact piece 22 formed by bending inward from 2 and 12 is provided parallel to each other at a distance, that is, substantially perpendicular to the electric wire. The first pressure welding piece 21 is provided with a side portion 21A that protrudes outward in order to secure its position, and the side portion 21A is fitted into the groove 12A of the side plate 12 so that the pressure welding piece 21 can be moved forward, backward, left and right. It is supported so that there is no wobbling. Further, the first pressure contact piece 21 is provided with a V-shaped opening introduction part 21C at the upper center, and furthermore, a pressure contact slit 2 is provided below the opening introduction part 21C.
1B is provided. Also in the second pressure contact piece 22,
A V-shaped opening introduction part 22C is provided at the upper center, and a pressure welding slit 2 is provided below the opening introduction part 22C.
2B is provided, but this pressure welding slit 22
The width of B is the width of the slit 21B of the first pressure contact piece 21.
It is set wider.

In this embodiment, two pressure contact pieces, the first and second pressure contact pieces, are provided, but the number of pressure contact pieces may be any number. However, in this case, the pressure contact slit of each pressure contact piece must be made wider toward the rear.

Crimp section 2 provided behind the crimping section 20A
0B is a position where the electric wire is crimped almost on the same line as the position of the electric wire press-connected by the pressure-welding pieces 21 and 22;
It has crimp pieces 24, 24 standing upright in a letter shape, and the crimp pieces 24, 24 are attached at the bottom where the crimp pieces 24, 24 are connected.
Ribs 23, 23 are formed to reinforce the core wires and to crimp the core wires more strongly during crimping.

The cover crimping part 20C provided at the rear of the crimping part 20B, that is, at the rear end of the contact, has holding pieces 25, 25 for holding the electric wire fixedly by crushing.
is formed erect.

In addition, in FIG. 1, above the contactor 1, an electric wire for being connected to the contactor 1 is shown. In other words, 60 is a power wire having a core wire 61 and a sheath 62, which are made up of a large number of fine wires, and 70 is a power wire used for relatively large currents among the wires used for signal lines. It is made up of one thick core wire 71 and a covering 72, and has a diameter of 8.
Similarly, 0 is an electric wire for a signal line, but it is used for a relatively small current, and is composed of a single relatively thin core wire 81 and a sheath 82.

Next, in FIG. 2, a state in which each of the above electric wires is connected to the contact 1 is disclosed. That is,
FIG. 2A shows a connection between the power supply wire 60 and the contactor 1. In FIG. In this case, the crimping part 20 of the contact 1
The exposed part of the core wire 61 of the electric wire 60 is placed between the crimping pieces 24, 24 forming B, and the covering part 62 of the electric wire is placed from above between the holding pieces 25, 25 forming the covering holding part 20C, and then crimped. The crimping pieces 24, 24 and the holding pieces 25, 25 are crushed with a jig (not shown) to make the crimping connection as shown in the figure.

Next, FIG. 2B shows an example in which a signal wire 70 having a somewhat thick core wire is pressure-welded. In this case, the second pressure contact piece 22 that matches the thickness of the core wire is used for pressure contact. That is, the tip end of the electric wire 70 is pushed into the pressure slit 22B of the second pressure contact piece 22, and the edge of the pressure contact slit is pressed against the core wire 71 without peeling off the coating.

Furthermore, in the case of pressure welding of the signal power source 80 having a thinner core wire, the pressure welding is performed with the first pressure contact piece 21 located further forward than in the case of FIG. 2B, as shown in FIG. 2C. The width of the pressure contact slit 21B of the pressure contact piece 21 is narrower than the pressure contact slit 22B described above and is adapted to a fine core wire.

In the case of the above-mentioned two pressure welding connections, in addition to the pressure welding of the core wire, the sheathing portion is also connected to the crimp pieces 24, 24.
And it is firmly held by the crushing of the holding pieces 25, 25.

Furthermore, as shown in FIG.
It is also possible to connect the signal wire 80 and the signal wire 80 to the same contactor 1. That is, after crimping the core wire 61 of the power supply wire 60 with the crimping portion 20B of the contact, for example, the signal wire 80 is pressure-connected to the first pressure-welding piece 21,
Further, the power supply wire 60 and the signal wire 80 are overlapped and held together at the covering holding portion 20C. By connecting in this way, the power supply line and the signal line are connected to the same contact, and high-density packaging can be achieved.

FIG. 4 shows an embodiment in which the contact is assembled into the connector housing 50 after the electric wire is connected to the contact. That is, various electric wires 60, 70, 80 are connected according to the program to a large number of contacts 1 connected to the connecting band 1', and then the contacts 1 are separated from the connecting band 1' and the contacts 1 are attached to the connector housing. Move each contact 1 forward toward the contactor or move the connector housing backward toward the contactor to insert each contactor 1 into each contactor storage hole 5 of the connector housing 50.
Insert into 1. At that time, the insertion position of the contact is adjusted until the connector housing 50 is in a predetermined position.
It can be set by moving in the longitudinal direction.

The electric wires are arranged in parallel in various combinations of power wires and signal wires according to a preprogrammed program, so that connectors to which various electric wires are connected can be easily incorporated. Moreover, automatic assembly is also possible by doing this.

[Effects of the Invention] As described above, the present invention has the following effects.

It is now possible to freely connect relatively thin signal wires or relatively thick power wires with the same contact, so it is possible to connect various signal lines with the same connector according to the user's requirements. Power lines can be combined. Therefore, there is no need to prepare special or various types of connectors and contacts, which is convenient for use, and it is also economically advantageous because the amount of stock can be suppressed.

When performing insulation displacement connection, the same contactor can be used even for electric wires with different core wires.

High-density packaging is possible because it is possible to connect the signal wire and the power wire to one contact by pressing and crimping them in an overlapping state.

In a mounted circuit to which a connector is attached, without removing the connector from the circuit,
By removing only the contacts from the connector housing and replacing them, it is possible to easily change from signal to power supply, or from power supply to signal, so the mounted circuit can be changed easily and inexpensively, and the mounted circuit can be changed easily. It also becomes easier to maintain.

By programming the connection of each wire to the contact, connectors in a wide variety of combinations can be easily assembled in a short time, and since automation is easy, it is possible to mass-produce and reduce production costs. , delivery time to users is also shortened.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a contactor and various electric wires to be connected according to an embodiment of the present invention, and FIGS.
Fig. 3 is a perspective view showing the state in which each electric wire is connected to the contact shown in Fig. 1, and Fig. 4 is a perspective view showing the state in which two electric wires are crimped and pressure-welded to one contact in Fig. 1. FIG. 2 is a perspective view of the contact shown in FIG. 1 immediately before being inserted into a connected connector housing before being separated from the connecting band; DESCRIPTION OF SYMBOLS 1...Contact, 10...Contact part, 20...Connection part, 20A...Crimp part, 20B...Crimp part, 2
1, 22...Crimping piece, 24...Crimping piece, 60,7
0,80...Electric wire, 61...Exposed core wire, 71,8
1... Core line.

Claims (1)

[Scope of Claims] 1. An electric contact having a contact part for connecting with a contact of the other party at the front part and a connection part for connecting an electric wire to the rear part, wherein the connection part has a cover for the electric wire at the front part. a crimping part having a crimping piece that bites into the core wire and comes into contact with the core wire, and a crimping part having a crimping piece that is crushed and crimped to the exposed core wire of the electric wire at the rear part of the crimping part, and crimping the crimping piece. The position of the electric wire and the position of the crimped wire of the crimping piece are almost on the same line, and the above-mentioned crimping part is made up of a plurality of crimping pieces arranged parallel to each other in the front-rear direction, and the crimping groove of each crimping piece is located at the rear. An electrical contact characterized by being formed with progressively wider widths.