JPS6224952Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a socket contact that receives a pin contact and makes an electrical connection, and is particularly suitable for assembling a large number of pin contacts into a housing to form a multi-conductor connector. It concerns the structure of a small socket contact.

The conventional mechanical contact structure of a socket contact is that a spring contact piece is provided at the contact part of the socket contact, and the pin contact is pressed or clamped by its elastic restoring force to make mechanical contact. The contact point in such a contact structure is usually 1
Since a certain amount of contact force is required to obtain an electrically stable connection, the insertion and removal force for the pin contact is also quite large. Therefore, when a multicore connector is constructed by assembling a large number of socket contacts of this kind into a housing, the insertion and removal forces of each socket contact accumulate and become excessive, making it difficult to increase the number of cores in the connector. In addition, no insertion/extraction force connectors and low insertion/extraction force connectors have been developed to increase the number of pins.
Special equipment and jigs are required to achieve this purpose, and the structure of the connector is therefore complex, requiring time and effort to assemble, and is expensive, as well as troublesome handling when inserting and removing the connector. was occurring.

Therefore, the present invention uses metal fibers in the contact area to provide reliable electrical contact with a small insertion/extraction force, and is inexpensive and easy to handle without requiring special connection devices or jigs. The object is to provide a socket contact that can form a connector.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Figures 1 to 3 show the socket contact according to the present invention; Figure 1 is an exploded perspective view of the inner cylinder with metal fibers wrapped around it, and Figure 2 is a vertical sectional view of the socket contact. , Figure 3 is A of Figure 2.
- It is a cross-sectional view along the A line.

The socket contact 1 is composed of a socket body 10, an outer cylinder 20, and a metal fiber 30, as shown in FIG. First, the socket contact body 10
is made of a conductive material, and has a cylindrical outer cylinder holding part 11 in which the outer cylinder 20 is fitted and held approximately in the center, and a rod-shaped electric wire connecting part 12 extending downward is integrally attached to the lower end thereof. establish. On the other hand, a cylindrical inner cylinder 13 that extends upward and receives a pin contact having an outer diameter smaller than the diameter of the outer cylinder holding part 11 is integrally provided at the upper end. Furthermore, a pair of rectangular holes 14 are formed in the peripheral wall of the inner cylinder 13 at positions facing each other around the axis.
to be drilled. The shape and number of the holes 14 are such that when the metal fibers 30 are wound around the peripheral wall of the inner cylinder 13 as described later, the metal fibers 30 are formed in the hollow part 1 of the inner cylinder 13.
It is sufficient to determine the appropriate amount so that it protrudes to 6.
It is not limited to the illustrated example. In addition, a sloped portion 15 is provided at the upper end of the outer cylinder holding portion 11 so as to hold the outer cylinder 20.
is used as a guide when fitting into the outer cylinder holding part 11.

As shown in FIG. 1, the outer cylinder 20 has a cylindrical shape with one end open, and its inner diameter is slightly larger than the outer diameter of the outer cylinder holding part 11, and is fitted into this and fixed together by an appropriate method. do. The other end is bent into an arc inside the cylinder to form a pin contact guide hole 21, the diameter of which is approximately the same as the inner diameter of the inner cylinder 13.
Therefore, when the outer cylinder 20 is fitted into the inner cylinder 13 and fixed to the outer cylinder holding part 11, the edge of the inner cylinder 13 and the edge of the pin contact guide hole 21 come into contact.

The socket contact 1 is assembled using the above-mentioned parts as follows. First, contact body 1
An appropriate amount of metal fiber 30 is wound around the circumferential wall of the inner cylinder 13 of No. 0, and the metal fiber 30 is made to protrude through the hole 14 in the hollow part 16 of the inner cylinder 13, and comes into contact with the pin contact as shown in FIGS. 2 and 3. contact part 40
form. Next, as shown in FIG. 1, position the outer cylinder 20 above the inner cylinder 13 with the opening end facing downward, and then move the outer cylinder 20 until the edge of the contact guide hole 21 comes into contact with the edge of the inner cylinder 13. If you press down on 20, the second
As shown in the figure, the outer cylinder 20 is fitted and fixed to the outer cylinder holding part 11, and the metal fibers 30 are firmly held in the ring-shaped cavity between the inner cylinder 13 and the outer cylinder 20.

A pin contact guide hole 2 is provided in the hollow portion 16 of the inner cylinder 13 of the socket contact 1 configured as described above.
When the pin contact is inserted from 1, the contact part 40
The metal fibers 30 protruding into the hollow part 16 of the inner cylinder 13 forming the inner cylinder 13 are pushed outward and come into mechanical contact with the pin contacts due to their elastic restoring force.

As mentioned above, the socket contact 1 according to the present invention has an extremely large number of contact points compared to the contact structure of a conventional socket contact because the metal fiber 30 is made of extremely thin metal wire made into a cotton-like structure. Therefore, electrically stable and extremely reliable contact can be obtained even if the contact force for the pin contact, that is, the insertion/extraction force is reduced.
Therefore, if the socket contact according to the present invention is used, the insertion/extraction force is reduced, making it easier to increase the number of connectors with more pins, and since no special connection device is required, the number of parts is small, and the connector is inexpensive. A multicore connector that is easy to handle can be provided.

It goes without saying that the present invention is not limited to the illustrated embodiment, and may include modified structures within the scope of the technical idea of the present invention.

[Brief explanation of the drawing]

Figures 1 to 3 show a socket contact according to the present invention, in which Figure 1 is an exploded perspective view of a state in which metal fibers are wrapped around it, Figure 2 is a longitudinal sectional view, and Figure 3 is a longitudinal sectional view.
The figure is a cross-sectional view taken along line A--A in FIG. 2. 1...Socket contact, 13...Inner cylinder, 1
4... Hole, 16... Hollow part, 30... Metal fiber,
40...Contact part.

Claims (1)

[Scope of utility model registration request] A hole is provided in the peripheral wall of the inner cylinder that receives the pin contact, a metal fiber is wound around the peripheral wall of the inner cylinder, and the metal fiber is made to protrude into the hollow part of the inner cylinder through the hole to make contact with the pin contact. A socket contact comprising a metal fiber on a peripheral wall of the inner cylinder and surrounded and held by an outer cylinder having an inner diameter slightly larger than an outer diameter of the inner cylinder.