JPH0332045Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Application of the Invention) The present invention relates to a multilayer contact for an electrical connector.

(Prior art and its problems) As a contact of an electrical connector, for example, as shown in FIG. A multilayer contact configured by providing a layer 3, or a multilayer contact configured by providing a conductivity imparting metal layer 2 on one surface of an insulating plate 1, for example by adhesion, as shown in Fig. 2, and using the insulating plate 1 as a spring property imparting layer. Proposed. These multilayer contacts make contact with a mating contact through a conductivity-imparting layer, and obtain contact pressure through a conductivity-imparting layer and a separate springiness-imparting layer. Therefore, the conductivity is not affected by the metal providing the springiness, and the springiness is not influenced by the conductive metal, as is the case with conventional contacts made of alloy metals such as phosphor bronze. . Therefore, by selecting the materials for forming the conductivity imparting layer and the spring property imparting layer, a contact having desired conductivity and spring properties can be easily produced. In addition, since contact alloy metals such as phosphor bronze are generally expensive, contacts made using these metals are expensive, but multilayer contacts have the advantage that they can be formed relatively inexpensively. Furthermore, for example, as shown in FIG. 3a, a desired number of strip-shaped conductive metal layers 2 are provided on one side of the insulating plate material 1 at a required insulation interval, and the entire surface of the other side or the conductive metal layer 2 is A multi-pole contact can be formed by correspondingly providing a metal layer 3 with spring properties, bending it as shown in FIGS. 3b and 3c, and holding it with a holding insulator 4. The metal layer 2 is formed by forming the metal layer 2 and etching it. However, if the metal layer 2 is formed by plating, the width of the metal layer 2 and the mutual insulation interval can be made smaller as required. Therefore, there is an advantage that a small multi-pole connector can be constructed at low cost.

However, on the other hand, when trying to obtain a contact with a large current capacity using this multilayer contact, it is difficult to avoid the following difficulties. That is, in general, when obtaining a contact with a large current capacity while keeping the material constant, it is required to increase the cross-sectional area of the conductivity-imparting metal layer 2. For example, when the width of the contact is limited, The thickness of the conductivity-imparting metal layer 2 must be increased. However, when each layer is bonded along the entire length of the contact as described above, the conductivity imparting metal layer 2 and the insulating layer 1 influence the spring force of the spring property imparting metal layer 3 to maintain the required contact pressure. It is inevitable that we will not be able to realize it.

The present invention was developed with the aim of eliminating the drawbacks of the multilayer contactor as described above, and will now be described in detail with reference to the drawings.

[Structure of the idea]

(Means for Solving the Problems) The present invention is characterized by the fact that in order to prevent each layer from coming apart in a part between each layer of the multilayer contactor, an integrated part is provided in the part other than the contact part 2a. The point is that the conductivity imparting metal layer 2, the insulating layer 1, and the spring property imparting metal layer 3 are stacked on top of each other. For example, as shown in FIG. 4, since a force in the direction of the arrow in the figure is applied to the contact portion 2a by the mating contact,
An integrated part 5 is formed by adhering the conductivity-imparting metal layer 2, the insulating layer 1, and the spring property-imparting metal layer 3 in a part of the base, and the other part is a non-integrated part 6.

(Effect) By doing as above, the spring property imparting metal layer 3 can deform almost independently from the conductivity imparting metal layer 2 in response to the force applied to the conductivity imparting metal layer 2,
You can exert your own spring power. Furthermore, in the case of a two-layer contactor consisting of a metal layer 2 imparting conductivity and an insulating layer 1 imparting spring properties, the same effect can be obtained by integrating a portion of the base, as described above. The disadvantages of multilayer contacts are eliminated.

(Modified example) Although the present invention has been explained above, in the connector, the base of the contact is held by the holding insulator 4 as shown in Fig. 3c, so it is possible to integrate each layer using this holding. can.

In addition, in the above, the three layers are non-adhesive, but the insulating layer 1
In cases where the springiness of the material is of little concern,
Only the spring property imparting metal layer 3 may be made non-adhesive.

Further, when the layers are not bonded, if the conductive metal layer 3 is thin or the metal is soft, the conductive metal layer 3 is likely to be pushed downward and deformed when a mating contact is inserted. To prevent this, see Figure 5a.
The tip portion may be integrated 5 as shown in FIG. 5, or the portion except the contact portion 2a may be integrated 5 as shown in FIG. 5b, or further, as shown in FIG. 5c.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of a multilayer contact, Figure 3 is an explanatory diagram of a multipolar contact, Figure 4 is an explanatory diagram of one embodiment of the present invention, and Figure 5 is an explanatory diagram of another embodiment of the present invention. It is an example figure. 1... Insulating layer, 2... Conductivity imparting metal layer, 2a
...Contact part, 3... Spring property imparting metal layer, 4... Holding insulator, 5... Integrated part, 6... Non-integrated part.

Claims (1)

[Scope of utility model registration request] In a multilayer contact in which an insulating layer is provided between a conductivity-imparting metal layer and a spring-imparting metal layer, and these layers are integrated by adhesive, each layer is applied to at least a part of the contact including the entire contact portion A multilayer contactor characterized by having a non-adhesive part.