JPS59217974A - Receptacle terminal - 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 an improved receptacle terminal (receptacle terminal using a beam), and particularly to a receptacle terminal that can easily and accurately form a square cross section.

In the past, electrical terminal type sockets consisting of essentially two rectangular flap sections interconnected by four semi-elliptical springs have long been available. Each of the springs is recessed inward with respect to the axis of the socket, and is configured to engage with a pin that rests on the axis and is inserted into the terminal (socket). The terminal is completed with a conventional retaining ear, a retaining lance, and a second engagement part, which can be, for example, a post or a wire receiving part. An example of this type of terminal can be found in US Pat. No. 3,404,367.

The difficulty in manufacturing terminals of the type described above is that each semi-elliptical spring is uniform along its entire length and is in interference contact with each other when the receptacle portion is formed. It is what happens. The interference of these springs prevents the terminal from forming an accurate square cross section. This poses problems for subsequent installation and alignment, and where space limitations make molding accuracy an important criterion, creating a boxy shape within a closely spaced profile. This is particularly problematic when it is desired to use receptacles of

The present invention relates to an improved receptacle terminal having two spaced apart and axially aligned square frame sections interconnected by four spring arm members such that each spring·
The arm member is integral at each end with a corresponding side of each frame section. Each spring arm member is recessed inwardly with respect to the axis of the socket (receptacle terminal), and is recessed inwardly with a uniform radius from each end to the closest point of each spring arm member. It is formed to protrude. Due to the taper, each spring arm member has sufficient rigidity to perform the same function as a conventional straight beam, and the gap between the contact points (spring arm members) is made smaller than that of a straight beam contact G. It also allows for narrower formation. In addition, the socket (receptacle) terminal has a retaining ear, a restraining lance (cut and raised), and, for example, it is mounted on a post or a crimping body with a pin or a crimp body.
and interconnection parts.

Hereinafter, embodiments of the present invention will be described by way of example with reference to the accompanying drawings.

The socket terminal 10 according to the present invention has two
one end or frame area 12.14, which end areas 12.14 are approximately square;
They are interconnected by four spring e-arms 16, 18, 20.22, each spring arm being integral with a corresponding side of said end section. Each spring arm 16, 18, 20° 22 is semi-elliptical,
It slopes inward from its end toward the center Ic.

The semi-elliptical shape of these spring arms causes the central areas of each to be closely spaced, as best seen in FIG. Also, these springs
The arms are slanted inward from each end, allowing the centers of each to be shaped freely without interfering with each other, while also achieving a contact force equal to or greater than that achieved with conventional socket terminals. exerts a contact force of

This type of socket terminal is advantageously manufactured by stamping using a die, so that an open seam 24,26 remains at one corner of each end section.

The spring arms 16, 18, 20.22 are depressed inwardly toward the axis of the socket terminal, but are deflected considerably when a terminal pin (not shown) is inserted axially into the socket terminal. This allows pins of a wide range of sizes to be accommodated in a single socket size.

Laterally projecting ears or flanges 28 are provided as attachment devices on the free end raise of the frame section 120.

One side 30 of the frame section 140 has a rearwardly projecting web 32 from which the side wall 3
4.36 stands out. These side walls 34,36 are
It forms a rearward extension or continuation of the adjacent sides of said frame section 14. A retaining lance 38 is stamped out of the web 30 and projects in a direction diverging from the axis of the socket terminal and has a free end towards the frame section 14.

Said web 32 is shown here as a slightly curved or U-shaped section and is configured to be inserted into a hole in a circuit board (not shown) or the like, and is further configured to connect conductors on said circuit board. (also not shown). This structure makes it possible to achieve several different types of fine patterns of posts within the receptacle block, as described below.

Alternatively, a plurality of such webs 32 may be interconnected by clip-type wire attachment devices (not shown) or wire wrapping techniques (also not shown); Such an interconnection method would require a different shape of the post area. Also, U.S. Patent No. 3.8
No. 05,214, No. 3,990,143, and No. 4
．． No. 186,982, respectively, it is also a feature of the present invention to form conductor-gripping features, crimp bodies, or trackable attachment portions that displace (eliminate) insulation on portions of said terminals. Included in the range. The contents of each of the aforementioned US patents are incorporated herein by reference.

The present invention is disclosed in U.S. Patent No. 3. /10/I, : U67'F is advantageously used with a housing of the type shown. The contents of this US patent are incorporated herein by reference. The housing is an elongated block of inherently rigid insulating material having a plurality of through holes, each hole receiving a respective terminal of the type of the present invention. The terminal will extend between the mating surface and the mounting surface of the housing, and the web portion 3
2 can be bent at right angles to the axis of the terminals in order to attach the connector housing at right angles.

Terminals according to the invention can be made to extremely small dimensions. For example, this type of terminal can be made from beryllium copper material with a bottom portion. The socket portion may have an overall length of, for example, about 0.265 inches, the end area of the socket portion may have a square outer diameter of about 0.0/1.6 inches, and the semi-elliptical spring may have a medium has an inner diameter close to about 0.018 inch. This particular socket has multiple cavities spaced 0.050 inches apart to produce 400
A receptacle book K is used which allows for a high contact density in which the contacts can be accommodated.

[Brief explanation of the drawing]

1 is a perspective view of a socket terminal according to the present invention; FIG. 2 is a plan view of the material used to form the terminal according to the present invention; FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. It is a diagram. 10... Receptacle (socket) terminal 12.
14... End (frame) area 16.18, 20.2
2...Spring arm 24, 26...Open seam 28...Flange (ear) 30...
Side part 32...Wipe 34.36...
Side wall 38...Holding spear (cut and raised) Teton 111 original book (method) Mr. Commissioner of the Patent Office June 1983
Month 25th 1st, thing! Table 1 Small Patent Application No. 59-43740 2 Name of the invention Receptacle Terminal 3 1 death related to the case of the person making the amendment 1 Temple r Name: Amp Incoholated 4, Agent: January 5-2, Roppongi, Minato-ku, Tokyo

Claims (7)

[Claims] (1) A receptacle electrical terminal (10) comprising two square end frame sections (12, 14) spaced apart from each other and axially aligned and four semi-elliptical spring members (16, 18). , 20° 22), each of these spring members being integral at each end thereof with a corresponding pair of sides of said frame section (12, 1/I) and each spring arm (16, 18, 20° 22) is the socket) In the receptacle terminal recessed inward with respect to the axis of (10), the spring arms (16, 18, 20, 22) do not interfere with each other, The spring arms (16, 18, 20, 22) are inclined inwardly from their ends towards their central portion, such that the socket can be formed with a square cross-section along its entire axial length. A receptacle terminal characterized by (2) Take the terminal (10) into the housing (=J
The receptacle terminal according to claim 1, further comprising means for controlling the temperature. (3) A web (32) projects from one of the end frame sections (12, 14), said web (32) being shaped to engage other electrically conductive means. A receptacle terminal according to claim 1. 4. A receptacle terminal according to claim 3, wherein the web has the shape of a bottle adapted to fit into an opening in a circuit board or the like. (5) A receptacle terminal according to claim 4, characterized in that the web (32) has a shape for engaging a conductor in a manner that excludes insulation. (6) A receptacle terminal according to claim 4, characterized in that the web (32) forms a crimp body. 7. Receptacle terminal according to claim 4, characterized in that said web (32) is made in the form of a follower pin for attachment to a circuit board.