JPS63164178A - Electric contact - 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 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. .

(Prior Art) Conventionally, as an electric contact that is implanted in an electrical connector or the like and is seamlessly connected to an electric wire, there has been a press-contact type contact or a press-bond layer contact. The pressure welding type contact has a pressure welding piece that forms a contact slit, and the insulated wire is pressed into the pressure welding slit as it is without peeling off the insulation, so that the wire is centered on the slit edge of the pressure welding slit. It makes the lines touch. In addition, the crimp layer contact is used for crimp connection by peeling off a portion of the coating at the tip of the electric wire and crushing the crimp piece of the contact against the exposed core wire.

The above-mentioned insulation displacement type contact is limited in current capacity because the contact area of the core wire with the insulation displacement piece is smaller than that of the crimp type contact. It is inexpensive because it is a targeted fil-. Furthermore, since it is possible to connect wires in mass production, it is often used in electronic equipment and the like for signal lines with a large number of circuits and a small current capacity.

On the other hand, crimp type contacts are mainly used for power lines because of their large current capacity.

(Problem to be solved by the invention) As for the press-fit type contact and the crimp-type contact as mentioned above,
Since the two systems have separate configurations, they have the following problems.

(D) Recent electronic equipment requires high-density packaging, and it becomes necessary to randomly arrange signal lines and power lines within the same connector. Since the contacts are constructed as separate parts, and their configurations are completely different, the structures of the contact receiving holes of the connectors are also different, making it impossible to arrange the signal lines and power lines randomly.Therefore, the usage requirements In order to meet this demand, it is necessary to prepare many types of specific connectors and contacts, resulting in high costs.Moreover, the large number of types of connectors and contacts makes it troublesome to manage them.

(2) High-density mounting was difficult because the signal line and power line could not be connected to one contact at the same time.

■ If you want to change the signal line and power line in a mounted circuit that has a connector attached, you have to remove the connector of that mounted circuit and replace it with another connector, which takes time and increases costs. Moreover, it was also difficult to maintain the mounted circuit.

(Φ In response to the user's request 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 install the connector housing. Incorporating it into a computer requires manual labor, which takes a lot of time and increases costs.

(Means and effects for solving the problems) The present invention -
In order to solve the problems that the conventional electric contacts mentioned above had, we developed an electric contact that has a contact part for connecting with the other contact on the front part and a connection part for connecting the electric wire on the rear part. In the contact, the connection part has a pressure welding part in the front part that has a pressure welding piece that bites into the sheath of the electric wire and comes into contact with the core wire, and a crimp part that is crushed and crimped with the exposed core wire in the rear part of the pressure welding part. and a crimping part having a crimping part.

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. 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 the rear position of the pressure-welding part.

Thus, the connection can be made both by pressure welding and by crimping with one type of contact.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail according to the accompanying drawings.

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

The contact portion 10 includes side plates t that stand up on both sides of the substrate 11.
It has contact pieces 1:l, 13 extending forward from z, tz and bent inward, and a throat 14 is formed in the front part of the contact pieces. The circuit board 11 has a structure that, when inserted into the contact housing hole 51 (see FIG. 4) of the insulating housing sink 50, engages with a step (not shown) in the housing hole 51 to prevent the contact from being removed. Even after the locking tongue piece 15 is formed to protrude downward and has elasticity for achieving a simple IJL (not shown) ) makes engagement easier! [2 can be removed and the contactor can be easily removed.]
It can be removed from the accommodation hole 51 at any time.

The connection section 20 is divided into three regions, which are successively from the front: a pressure welding section 20A, a crimp section 20B, and a covering holding section 2()C.
It consists of.

The positive pressure contact portion 208 shown in I-- includes a first pressure contact piece 21 formed by cutting and raising the bottom of the substrate 11, and a second pressure contact piece 22 formed by bending inward from the side plate 12.12. They are provided parallel to each other at intervals, that is, substantially perpendicular to the wire. In order to secure its position, the first pressure contact piece 21 is provided with a side portion 21A that protrudes outward, and the side portion 21A is fitted into the groove 12A of the side plate 2 so that the pressure contact piece 21 can be moved forward, backward, left and right. It is supported so that it does not sway. Further, the first pressure contact piece 21 is provided with a V-shaped opening introduction part 21G at the upper center, and the opening introduction part 21
A press-contact slit 21B is provided below C. The second pressure contact piece 22 is also provided with a V-shaped opening introduction part 22C at the center and upper part, and a pressure contact slit 22B below the opening introduction fi 22c. It is set wider than the slit 21B of the first pressure contact piece 2I.

The crimp part 20B provided behind the crimp part 20A is
It has crimping pieces 24 , 24 that stand up in a U-shape, and the crimping piece 2
Ribs 23.23 are formed at the bottom connecting the crimping pieces 24.24 to reinforce the crimp pieces 24.24 and to crimp the core wire more strongly during crimping.

The covering 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 and 25 upright for holding the electric wire fixedly by crimping.

In addition, in FIG. 1, above the contactor 1, an electric wire to be connected to the contactor 1 is shown. That is, 60 is a core wire 61 composed of a large number of mesh wires used for a power supply line.
is a power supply wire having a sheath 62, and 70 is a wire used for relatively large currents among the wires used for signal lines, and is composed of one thick core wire 71 and a sheath 72, Similarly, 80 is an electric wire for a signal line or one used for relatively small current, and is composed of one relatively thin core wire 81 and a sheath 82.

Next, FIG. 2 shows a state in which each of the above electric wires is connected to a contact l. That is, FIG. 2(A) shows a connection between the power supply wire 60 and the contact l. In this case, the crimping piece 24.2 forming the crimping part 20B of the contact l
The exposed part of the core wire 61 of the electric wire 60 is placed between the holding pieces 25 and 25 forming the covering holding part 20G, and the covering part 62 of the electric wire is placed from above between the holding pieces 25 and 25 forming the covering holding part 20G, and then a crimping jig (not shown) is used. The crimping pieces 24, 24 and the holding pieces 25, 25 are crushed and the crimping connections are made as shown in the same figure.

Next, FIG. 2 CB) shows an example in which a signal wire 70 having a slightly 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. In other words, the wire 70 can be removed without peeling off the edge.
The distal end portion of the wire 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.

Furthermore, in the case of pressure welding of the signal wire 80 having a thin core wire, as shown in FIG. It is done. 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 part is connected to the crimp pieces 24, 24 and the holding piece 25.
．． It is held tight by the crushing of 25.

Furthermore, as shown in FIG. 3, it is also possible to connect the power supply wire 60 and the signal wire 80 to the same contact l.

In other words, the crimping part 20B of the contact is a power source! After crimping the core wire 61 of A60, for example, the signal wire 80 is pressure-connected to the first pressure-welding piece 21, and then the power wire 60 and the signal wire 80 are overlapped and held together in the sheath holding part 20C. be. 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.
0, and then connect the contact l (?1') and move the contact l forward toward the connector housing, or move the connector housing backward toward the contact, and connect each contact 1 to the connector housing 50. Insert into each contact storage hole 51.

At this time, the insertion position of the contact can be set by moving the connector housing 50 to a predetermined position in the longitudinal direction of the connecting band 1'.

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

Next, FIG. 5 shows another embodiment.

In the previous embodiment, the press-fitting piece and the crimp-bonding piece extend in the same direction, but in this embodiment, they extend in different directions. That is, the pressure contact section 30 consisting of the pressure contact pieces 31, 12 and the cover holding section 33 is formed upward, and the pressure contact section 40 consisting of the pressure contact piece 41 and the cover holding section 42 is formed downward. Therefore, when wires 70A and 60A are connected to this single contact by pressure welding and crimping, the two tools are used from above and below to perform the pressure welding and crimping connection at the same time, which is extremely efficient. Because it is held by the covering retaining piece,
It has the advantage of having a large holding power.

(Effects of the Invention) As described above, the present invention has the following effects.

■ It is possible to freely crimp connect relatively thin signal wires and relatively thick power wires with the same contact, so various signal lines can be connected with the connector of the same configuration according to the user's requirements. and power line 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 j11 can be suppressed.

(ri) It is possible to connect the signal wire and power wire to one contact by overlapping them and pressing and crimping them respectively, so high-density mounting is possible.

■ In a mounted circuit to which a connector is attached, it is possible to easily switch from signal to power supply, or from power supply to signal, by removing only contact f from the connector housing and replacing it without removing the connector from the circuit. Since this becomes possible, the mounted circuit can be changed easily and at low cost, and the mounted circuit can be easily maintained.

■ By programming the connection of each wire to the contact, a wide variety of combinations of connectors can be built into the cylinder in a short time, and it is easy to automate.
Mass production is possible, which reduces production costs and also shortens delivery times to users.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a contact according to an embodiment of the present invention and various electric wires to be connected, and FIGS. 2 (A) to (C) show the state in which each electric wire is connected to the contact of FIG. 1. FIG. 3 is a perspective view showing two electric wires crimped and crimped to one contact shown in FIG. 1, and FIG. 4 shows the contact shown in FIG. 1 before it is separated from the connecting band. FIG. 5 is a perspective view showing a contactor of another embodiment of the present invention and an electric wire to be connected.

Claims (3)

[Claims] (1) In an electrical contact that has a contact part on the front for connecting with the other contact and a connection part on the rear for connecting an electric wire, the connection part may cut into the sheath of the electric wire at the front and An electrical contact comprising: a pressure contact portion having a pressure contact piece that contacts a wire; and a crimping portion having a pressure contact piece that is crushed and crimped to an exposed core wire at a rear portion of the pressure contact portion. (2) The electrical contact according to claim (1), wherein the pressure contact piece and the crimp piece extend in the same direction. (3) The electrical contact according to claim (1), wherein the pressure contact piece extends in a direction different from that of the pressure bonding piece.