JPS5946777A - Contact for electric connector - 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 The present invention relates to electrical connectors, and more particularly to electrical contacts mounted within the connector.

Generally, electrical connectors include a plug and a receptor barrel, both of which have an insulating insert with a hole through which the electrical contact passes. This 141 human body is inserted into the rear end of the metal shell or housing of the connector and held in place by means such as a nut. Some connectors allow electrical contacts to be inserted from the rear and removed from the front or rear; other connectors allow electrical contacts to be inserted from the front and removed from the front or rear. These features are desirable and facilitate assembly and use of the connector. Examples of conventional carp lids that can be inserted and removed from contacts are 196
US Pat.
No. 9, and U.S. Pat. No. 3,221,292, entitled "Electrical Connector," issued November 30, 1965. In these US patents, the contacts are held in the connector nozzle by a retention mechanism, and another rubber backing that fits snugly around the incoming conductor seals the contacts from moisture. Moisture gets into the area between the contacts”
! j-I try not to.7. Where removable contacts and moisture seals are required, it is common practice to stack three or more S products together to perform their removable and sealing functions.

BACKGROUND OF THE INVENTION The present invention provides an electrical connector in which removable contacts are retained 12 by a one-piece molded rubber insert and sealed from moisture.

The invention is characterized by a contact having two annular grooves formed by precisely beveled surfaces that fit into the holes of the rubber insert.

It is therefore an object of the present invention to provide an insert for an electrical connector that incorporates contact retention Rj *H and moisture sealing functionality in a single part.

Another object of the present invention is to eliminate the need for sandwiching two or more components to achieve contact retention and moisture sealing in electrical connectors.

Another object of the invention is to reduce the cost of assembling electrical connectors.

Another object of the present invention is to eliminate the need for adhesives to bond together the many parts that make up the entire insert of a conventional connector.

Please refer to the detailed description of the embodiments and the accompanying drawings. Fig. 1 shows the center axis A1 front intersecting part 2
1, a pin type connector having a middle part 22 and a rear part 23 for receiving the conductor is shown. Intermediate 7slS
22 ij', including two grooves 24.25. Matching groove 24
．． 25 includes surfaces 26 and 27 with beveled edges on the normal IW,
-Front σ) The beveled surface 2G is the center of the contact 1
It is angled approximately 30 degrees from 11II. The rear surface 27 of the front surface 26 is oriented at an angle 7 of approximately 15 degrees from the central axis of the contact 20. shoulder facing backwards 2
8 is between the middle part 22 and the end part 23. Surface 26.
The angle of 27 is set so that it can be removed from the human body with a force smaller than the input force. If you want it to be stronger than the y4 pair, that is, the force to remove it will be stronger (if you want it, you can just reverse the angle).

Fig. 2 is a schematic diagram of an electric connector adopting the principle of the present invention. 20 contacts are installed in the holes 31 of each insert 30. , 20 contacts are installed in the holes 31 of each insert 30. It includes two radially inwardly projecting portions that fit into annular grooves 24,25.

The inner diameter of the mating hole 3 is somewhat smaller than the outer diameter of the contact 20 so that pressure can be applied around the contact to form a tight seal.

The angles of the mating grooves 24, 25 and 26, 27 determine the retention strength of the contact when it is inserted into the insert 30. Insert 3 by changing the angle of surfaces 26,27
Connector insert 3 that can vary the force required to insert and remove contacts 20 to 0
A plate 40 made of a hard insulating material is secured within the housing 10 to prevent rearward movement of the contacts 20, which are pierced within the housing 10. Shoulder 28 behind contact 20
contacts the forward facing shoulder 28 of the plate 40 and prevents the contact 20 from moving rearwardly within the insert 30.

Hole 31 of insert body 30 from the front of connector housing io
When inserting the contact 20 into the plate 40:
Acts as an effective stop. Insert body 3o Ha good L
, < is comprised of an approximately 65 durometer comb-like elastomer.

Although a preferred embodiment of the invention has been shown, the invention can be practiced with various modifications, such as having one contact instead of two? , ', 7, or by making the angles of the surfaces 2G and 27 the same. Therefore, the examples are intended to clearly demonstrate the principle of the present invention, and should not be interpreted as being limited to the technical idea of the present invention.

FIG. 2 is a schematic diagram of an electrical connector employing the principles of the present invention.

10-Fist metal housing, 20・-Contact, 21・
・Anterior coital region, 22.. Middle region, 2; 3.. Posterior part, 24.
25...Annular groove, 26.27.'';+F) Flattened surface, :30...Insert, 40...F1./-E.

Claims (1)

[Claims] (1) A housing having a front part (Jl) and a rear part (12); each having a front junction part (21) and a middle part (22).
And the conductor holder has a long contact (2o) of the IMD with the rear (23) i;
0), each hole receiving (7), and comprising means for mounting said /1 contact in said housing. Regarding the contacts on the cover and lid, there is a middle part (22) in the valley of the contact (20).
) has at least two constraints (26) and (27), and 6
The surface is precisely beveled from the central axis (A) of the above-mentioned contact (20), and the above-mentioned insert (30)
The matching holes (31) are arranged in each annular groove (24) of the contact.
, (25) having at least one radially inwardly projecting -J- portion (31), (32) in a snug fit. (2) the angle of the first surface (26) in front of the second surface (27) is about 30 degrees from the center of the contact lens (20); A contact according to claim 1, wherein the angle of the second surface (27) of the contact is about 15 degrees from the central axis A of the contact (20). (3) The angle of the first surface is larger than the angle of the second surface, so that the force for removing the contact is smaller than the force for inserting the contact. connector contacts. (-1) The electrical connector according to claim 1, wherein the self-closing angle of the first surface is smaller than the angle of the second surface, so that the force for removing the contact is greater than the force for inserting the contact. contact. (5) Shoulders with contacts) facing backwards (213
)”. (6) Each contact has two grooves (24), (25) and a mating hole ( 31) A contact of an electrical connector according to claim 1.2.3 or 4, having two radially inwardly projecting portions. (7) The insert is made of rubber of about 65 durometer. A contact of an electrical connector according to claim 1.2.3 or 4.