JP2603981Y2 - Conductive contact pin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to conductive contact pins.
More specifically, the present invention relates to a conductive contact pin suitable for a four-terminal measuring method.

[0002]

2. Description of the Related Art In a four-terminal measuring method, four conductive contact pins are used. That is, while supplying a current to a component to be measured such as a resistance from two specific conductive contact pins,
The resistance value is obtained by measuring the voltage between the two terminals of the component under test with the other two conductive contact pins. Especially, since the component having a low resistance value can be accurately measured, it is widely used. I have.

FIG. 4 shows a conventional example in which two conductive contact pins are integrally integrated in consideration of the handling at the time of measurement. According to this, the conductive contact pin 1 includes two pin bodies 2 and 3. Each of the pin bodies 2, 3 has a contact 4, 4 at its tip, respectively, and is slidably inserted and held in the sleeve 6 so that they face each other and are parallel to each other. The pin bodies 2 and 3 are urged toward the contacts 4 and 5 at the tips by spring means (not shown).

[0004] The conductive contact pin 1 is inserted and held through a sleeve 6 through a through hole formed in a pin board (not shown) and used for measurement. Need to prevent contact (short circuit).

For this reason, a spacer made of an electrically insulating material is interposed between the contacts 4 and 5, but when the spacer is fixed to both the contacts 4 and 5, the pin bodies 2 and 3 are integrated. For example, when there is unevenness in the measurement site, there is a possibility that only one pin contacts and the other pin floats from the measurement site.

[0006] This problem can be solved by attaching a spacer only to one of the contacts, but this makes the spacing between the contacts unstable on the other hand.
In particular, in a high-density mounting board, there is a disadvantage that an adjacent component is inadvertently touched.

[0007]

Therefore, a holding frame 7 made of a synthetic resin as shown in FIG. 5 is attached to the contacts 4,5. That is, the holding frame 7 is formed of a rectangular frame having a pair of square holes 8 and 9 partitioned by the partition wall 7a. One contact is fixed with, for example, an adhesive.

According to this, the pin bodies 2 and 3 can slide independently and the distance between them can be kept constant. However, this holding frame 7 has a small external dimension and a small size. In order to form the pair of square holes 8 and 9, it is extremely difficult to manufacture them. In addition, it is not preferable in terms of cost to integrally mold with a synthetic resin since a dedicated mold is required.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and its structural features include a sleeve which is inserted and held in a through hole of a pin board, and a sleeve which is inserted into and held by the sleeve. The contacts are slidably inserted so as to be parallel to each other, and contact
Comprising a pair of pin body, and a spring means for urging the contact <br/> probe side of each Oso of the pin body having a face contact with each other of the respective pin body with a predetermined gap In a conductive contact pin which is arranged in a manner, at least one of the contacts is covered with a synthetic resin pipe as a spacer, and
In addition to achieving electrical insulation with the above-mentioned contacts, one of the above-mentioned contacts does not have a partition inside for slidably receiving the other contact while regulating the interval with the other contact. A holding frame made of synthetic resin pipe material has been installed.

As described above, according to the present invention, at least
Also consists of just attaching two synthetic resin pipes.
Electrical insulation between contacts and regulation of their spacing
I can .

That is , each contact is electrically insulated by the spacer, and the distance between them is kept constant by the holding frame.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 3, all of which are sectional views similar to those taken along line AA of FIG. Contact 4,
5, the pin main bodies 2, 3 and the sleeve 6, etc., have the same configuration as the conductive contact pin of FIG. 4 described as a conventional example, and a description thereof will be omitted.

First, the embodiment of FIG. 1 will be described.
In this example, a spacer 10 made of a synthetic resin pipe is attached around one contact 5. In this case, the spacer 10 is preferably heat-shrinkable, whereby the spacer 10 can be easily attached to the contact 5 by blowing hot air.

[0014] In addition, each contact with the electrical insulating coating material is applied
Insulation between them can be achieved, but it is
For example, a synthetic resin pipe may be used as the spacer 10.
It is preferable.

Thereafter, the holding frame 1 is placed around the contacts 4 and 5.
1 is attached. In this case, the holding frame 11 is made of, for example, a pipe material having no partition therein, and in this example, is fixed to the contact 5 side with an adhesive or the like. On the contrary,
The other contact 4 is slidably inserted into the holding frame 11.

On the contrary, the holding frame 11 may be fixed to the contact 4 so as to be slidable with respect to the contact 5.
Further, in this example, the spacer 10 is provided around the contact 5. However, in extreme cases, the spacer 10 may be attached to any one of the opposing surfaces of the contacts 4 and 5.

Furthermore, although a rectangular tubular pipe member is used as the holding frame 11, for example, when the holding frame 11 is fixed to the contact 5 side, the side surface denoted by reference numeral 10a in FIG. Therefore, the holding frame 11 may be a U-shaped frame.

By the way, as exemplified in FIG.
The spacer 10 may be formed not only on the contact 5 side but also on the contact 4 side. Further, as shown in FIG. 3, when the four pin bodies are collectively combined into one conductive contact pin, a spacer 10 is attached to each of the contacts 4, 4a, 5, 5a. At the same time, the holding frame 11 may be placed around them, and the holding frame 11 may be fixed to any one of the contacts.

[0019]

As described above, according to the present invention, insulation between the contacts and regulation of the distance between the contacts can be easily performed by using a commercially available pipe material or the like. A conductive contact pin suitable for a simple four-terminal measurement method is provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing another embodiment of the present invention.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a front view showing a conventional conductive contact pin applied to a four-terminal measuring method.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conductive contact pin 2, 3 Pin body 4, 5 Contact 6 Sleeve 10 Spacer 11 Holding frame

Claims (1)

(57) [Scope of request for utility model registration] 1. A sleeve which is inserted and held in a through hole of a pin board, and is slidably inserted through the sleeve so as to be parallel to each other, and is inserted into a tip which comes out of the sleeve.
Comprising a pair of pin body having a respective contact, and a spring means for urging the contact probe side of each Oso of the pin body,
In a conductive contact pin in which the contacts of each of the pin bodies are arranged to face each other with a predetermined interval, at least one of the contacts has a synthetic resin as a spacer.
Cover the grease pipe to achieve electrical insulation with the other contact.
With that, <br/> holding consisting no synthetic resin pipe material the septum therein slidably receiving the same other contact while regulating the distance between either one to the other contacts of the contactor A conductive contact pin having a frame attached.