KR830002513Y1 - Insertion Resistance Electrical Connector - Google Patents

Abstract

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Description

Insertion Resistance Electrical Connector

1 is an exploded perspective view of a connector consisting of two elements according to the present invention.

2 is a plan view of one of the elements of FIG.

3 is a perspective view of the FIG. 1 connector with elements in a fixed connection position.

4 is a plan view of the arrangement shown in FIG. 3 showing the contact points and the spring effect in more detail.

FIG. 5 is a cross sectional view of the coupled connectors of FIGS. 1-4 taken in arrows 5-5 of FIG.

6 is a perspective view of circuit boards using a hinged connector according to the present invention.

7 is a side view of the FIG. 6 arrangement.

8 is a side view of other circuit boards using hinged connectors according to the present invention.

9 is an exploded perspective view of other electrical connectors according to the present invention.

FIG. 10 is a cross-sectional view of the FIG. 9 connector. FIG.

11 is an exploded perspective view of still another connector according to the present invention.

FIG. 12 is a plan view of the connector element of FIG. 11 showing a coupled state.

The present invention relates to a non-insertion resistance electrical connector that requires little insertion force.

Due to the complexity and miniaturization of electrical and electronic circuits, detachable electrical connectors have been developed in various forms for specific applications.

As a requirement for a number of circuit lines and high reliability, so-called “uninserted input and low insertion force” connectors of various structures have been employed. A portion of the connector can be easily inserted into another portion with little resistance and the portions can be held in place in electrical contact with each other.

Usually, the connectors use a male plug that can be inserted into a separate female receiving member. Fixing action and firm engagement are achieved by using cams or action members to provide separate lever or wedge effects. The main disadvantage of conventional insertless resistance connectors is that they are very expensive even in high volume production.

Fundamentally, higher than desirable prices are due to the fact that each element is different, the assembly process is complex, and a separate mechanism is used to obtain the insertion-free characteristics. It also has other drawbacks.

Reliable contact is reduced by oxide deposits, corrosion or glaze on the surface of the elements. Some contact friction or wedging occurs between elements when one element is inserted into another, but this does not completely eliminate the formation of contaminant layers, especially in the non-inserted connector. Therefore, it is desired to provide a connector in which the corrosion layer and impurities are removed and a firm number of contact points are formed between clean metals, which can be obtained by complex shapes and mechanisms, but are simple, flexible and easily mass produced. It is preferable to use a structure that can be used.

The connector according to the present invention utilizes edge contact between adjacent conductive elements on adjacent planes, which elements are inserted along the one axis into the engaged position, and then one part of the element is within the expandable part of the other. Pivot to the engagement position where it is wedge-inserted. Its pivoting movement moves against the spring force, ensuring reliable soft contact at many points while holding the connector in place.

The two main parts of the connector are thin flat single elements formed from the plate material, and the entire structure is a double layer of metal thickness. Each connector is easily concentrated in a simple number of pins and can be used for specific geometries of multiple connectors to meet a wide range of requirements.

The two main elements that make up the connector are exactly the same and are interchangeable. This structure guides the two elements to the joining position and keeps them in a plane that is twice as thick as the metal thickness without the use of external guides or additional elements. In another example, the two elements can be of different shapes and other means can be used to retain them on the adjacent surface.

Also, according to the present invention, the two halves of the hermaphrodite electrical connector each have a pair of arms and a central tongue tongue, each of which extends from a common base, On one side, and the tongue is biased by one thickness. Electrical connections are made to the base of each element in a conventional manner. The arms are of different shapes with respect to one another, the inner edge of one of the arms is straight and the inner edge of the other arm is concave.

The outer edge of the tongue is convex and shaped and sized to wedge when pivoted between the arms of adjacent connector halves. The elements are of the same size and shape, and are inserted by sliding along the connector longitudinal axis between the openings of the arms of one element so that the arms and the tongue tongues of the other elements are joined to each other. When the elements are then pivoted about an axis perpendicular to their main plane, the tongues contact the arms at at least three points, removing contaminants on the pivot contact surface and making firm contact by the spring resistance of the arms. .

Because these hinged connectors can withstand significant loads around their hinge axes, they can also be used as mechanical supports to provide a variety of circuit boards that are shaped to fit together for easy access. Thus, circuit boards can be pivoted to provide an accordion or book-like effect, thereby providing access to individual circuit boards while providing high circuit density.

Various changes can be made to this connector. The thickness of the metal can be increased to provide a high current carrying capacity, or the connectors can be made of precious metal. It is also possible to attach a high conductive coating or an insulating coating on the sides of the element. The connectors may be of a single element and may be arranged in groups to be on a plane interconnected or parallel to a common base.

In another example of a connector according to the present invention, the connectors are composed of different elements, but in two layers, for one element it is seen that one element does not deviate from its face. One element has an expansion member that is received and pivotable between the deflectable arms of the other. In this case, the expanding member and the deflectable arms have engaging surfaces such as inclined edges, the surface of which only prevents the members from deviating in either direction. In another example, the expansion member may act on a pair of deflectable arms to increase the number of useful contact points in a non-athletic connector.

The present invention is described in detail below with reference to the accompanying drawings in various embodiments.

A single electrical connector 10 according to the present invention using a detachable hinge scheme and thinner is shown in FIGS. 1-5. In this example, the connector 10 is composed of two elements 12 and 13 of the same size and shape and the elements are fitted in exactly the same form to each other. Thus, the elements are allowed to be interchanged in position and can be manufactured with the same tool. The connector of this example is particularly suitable for a wide range of current carrying applications for modern semiconductor devices.

Each of the two elements 12, 13 is made of a relatively thin plate material (minimum thickness of 0.015 inches-0.020 inches). The metal used may be brass, copper or other conductive materials but expensive materials with high resilience are not required because of the shapes described below. If the connector has many openings and closures, deformable materials such as lead are generally not suitable.

Each cut 12, 13 of the connector has a base 16, on which the outer conductor 18 is bound by soldering, winding, welding, insulated piercing for collective terminals or other conventional means. have. The halves 12 and 13 are made of real planar elements which can be simply formed by stamping or punching. The term "on real plane" means that its thickness is very small in the major plane of the element. Since the element actually has a portion that is flanked by another adjacent plane parallel to the thickness of the plate, the overall connector thickness is twice the thickness of the plate material used, but because it is small with respect to other teeth, It is appropriate to call it a plane. In practice, however, this connector has a planar structure of two layers.

In the first example, the knitted portion is a tongue 20 which extends from the center of the base. In this example, the tongue 20 is connected to the base 16 by a bent connection 22. In the major plane of element (12) or (13). The base is connected to a pair of arms 24, 26 of different shapes. The root portion (FIG. 4) between the central portion of the base 16 and each arm 24 or 26 is a slightly deflectable portion, ie a spring portion, to allow the arms to move outwardly in the major plane of the connector 10. Acts as. The material need not have a high modulus of elasticity to exert high elasticity against deflection, and the element should not be close to the strain point of the material when deflected.

The first arm 24 has a straight inner edge 28 that acts as a hinged reference surface used in this example to secure the connector. The second arm 26 has an inner edge 30 which is concave with respect to the opposite edge 28 depending on the size and shape of the tongue tongue of the coupling connector half.

In the hermaphrodite connector 10 as shown in FIGS. 1-5, each tongue is placed between the arms of the opposite half of the connector. The longitudinal axis of the connector half 12 or 13 may be considered to extend from the base 16 at the center of the tongue 20 between the arms 24 and 26 in the direction of the arrow in FIG. The transverse size of the tongue 20 is insertable along the longitudinal axis such that it slides between the terminal portions of the arms 24 and 26 of the opposite connector half. Opposite parallel terminal portions of the arms 24 and 26 and outer edges of the tongue tongue provide guides for inserting the elements along the longitudinal insertion axis. The front insertion end 32 of the tongue tongue 20 is arcuate and the tongue tongue 20 is straight on the side and curved toward the trailing surfaces 36 and 35. As shown in FIG. 4, the concave medial edge 30 is tongue-shaped body 20 between the arms 24 and 26 when pivoted about an axis perpendicular to the plane at a predetermined angle (here about 90 °). ) Is spaced apart from the opposite edge 28 to provide a spacing for placement.

Alternatively, the tongue is slightly longer than the width between the arms. However, these relative dimensions cannot be measured directly along a particular axis when there are three contact points, but must be measured along the lines centered about the reference axis. In the narrow root portion between the base 16 and each of the arms 24, 26, the expansion force acts most strongly.

In the embodiment of FIGS. 1-5, as can be seen in detail in FIG. 4, each of the short arcs (of the front high-line portion 32) and the trailing surfaces 3, 35 of the tongue body 20 is formed of elements. Each of the arms 24 and 26 comes into contact when pivoted to a fixed position around an axis perpendicular to its plane. Thus, three contact points are formed in each tongue 20, and in the male connector 10 of the male body type, the total edge contact points are six. By utilizing the spring effect of the arms 24 and 26, the contact is assured and positive since the pressure is maintained by the elastic resistance. Moreover, the corrosives and particles on the surfaces of each tongue are brought into contact with the edge surfaces of the one element by the pivoting of the other element 12 relative to one connector element 13. Remove them and promote contact.

Since the weight and shape of the two arms in the asymmetric arms 24 and 26 are different, the resistance to vibration and shock is increased. The use of the root of each arm as a spring in the planar direction of the plate material is particularly advantageous because it requires relatively high elasticity even with small deformations and does not cause permanent deformation of the spring.

The halves 12, 13 of the connector 10 may be arranged to provide variable force during hinge action. When each tongue 20 is inserted between the arms, the tongue is guided along the axis in a straight line without insertion force. However, when the insertion limit is reached, the misleading medial side 30 provides the maximum spacing from the opposite edge 28. Thus, at first, little or no resistance is applied, but the resistance increases until the rotational position is reached to reach a fixed position. This may be used to ensure that a secure fastening action is placed in the final fastening position without using a separate actuating member. But. This is not necessary and can be replaced by external stops, especially in multiple connectors if necessary.

In addition, this hermaphrodite connector fixes the connector elements 12 and 13 in the transverse direction with respect to the main plane, so that the opposing tongues 20 are engaged in relative movement in either direction along the axis. Do not deviate from the plane. Opposite surfaces of the tongue 20 remain in contact, but this contact is not used to make electrical contact (a little). This is because very little pressure is applied, and also because there is adequate electrical connection at the six contact points along the edges. It can be seen that in many applications it is sufficient to provide two points of contact for one tongue since exerting vigor on opposing arms at two points. However, the three point contact method is stable and can be achieved without complicating the structure. It is also possible to coat the pre-insulated material of punching on the planes of the connector elements 12 and 13 so that only the opposite edges are in metal contact. In the elements shown, all parts are integral with the base, which is usually preferred but the elements may be assembled from other parts. The shape of the tongue and arm may also be altered as components are added or removed depending on the particular application. It is also possible to make the body of the elements by injection molding because the edge contact is sufficient. When this type of structure is used, conductive edges are formed by plating.

In case of accident or careless use, element reinforcement techniques such as forming wrinkles or corrugations to prevent bending or deformation of structural components may also be used. Although a general interlocking relationship is used, a hermaphrodite structure does not necessarily need to be used. For example, the arrangement of elements or bases may be altered such that the bases of connector elements 12, 13 in a fixed position may be adjacent at 90 ° angles or extend in opposite directions along a given axis. Thus, the conductors can be connected to each other whether the connectors approach 180 ° or 90 ° to each other, or are adjacent in parallel at any angle between 0-180 °.

Along with the fact that the connector itself can act as a load bearing member when locked in contact position, the use of such a connector can be flexibly varied. For example, as shown in FIGS. 6 and 7, the side edges of the circuit boards 40 and 41 may be coupled to each other only by a series of connectors 43 composed of elements 43a and 43b. . Not so, only the connector 43 allows the circuit boards 40 and 41 to be held opposite to each other at a distance from each other. Alternatively, the connector 43 may be made and installed such that the circuit boards 40 and 41 are coplanar at an angle of 180 degrees with respect to the central hinge axis. The connector 43 may be positioned at an angle so that when the circuit boards are joined to each other at the hinge axis, they can access the circuits and components without fully unfolding them. Also, a plurality of child circuit boards may be mounted at the edges of a common parent circuit board to obtain a conventional mother circuit board arrangement. The only known mechanism acting as a hinge and electrical connector is described on page 58 of the March 1967 "Computer Design" magazine, but the mechanism utilizes planar contact between adjacent elements and is not interlocking.

Circuit boards can be closely overlapped by installing hinge connectors along the same or opposite ends of the circuit board. One example of the versatility of this connector is shown in FIG. 8, in which a pair of relatively large parent circuit boards 48 and 49 are interconnected along a periphery by a hinge connector 50, and a separate A plurality of magnetic circuit boards 54 are coupled to each of the mother circuit boards by different hinge connections. Thus, for example, a pair of small magnetic circuit boards 54 and 55 are mounted on the lower mother circuit board 49 at the lower side thereof by hinge connectors 57 and 58, and four mother circuit boards 60 to 63 are attached to the mother circuit board 48. ) Are mounted at positions spaced apart from the top by hinge connectors 66-69.

The hinge connectors can be reversed to provide an accordion hinge assembly, and by installing hinge connectors at the ends of a series of parallel circuit boards, all circuit boards can be opened at one end as a book. Other combinations and modifications of these principles may be readily made by those skilled in the art.

In the examples of FIGS. 6-8, a number of parallel hinge connectors are mounted along an axis perpendicular to the plane of each element. The individual hinge connector halves can be mounted along a common plane, and for many purposes it is convenient to have each pair of elements arranged side by side at an angle of 90 °, 180 ° or between them. These different arrangements facilitate assembly of the connectors while maintaining the advantages of easy insertion and secure fastening. The hinge portion of the connector need not be flush with the base. For example, when the central conductor disk has a plurality of radially protruding hinge connectors, the outer connectors can be made of hinge connectors that are coplanar. In this case each connector pivots about an axis perpendicular to the plane of the central disk. However, when the hinge connector base is twisted 90 ° such that the arm and tongue are on a plane perpendicular to the plane of the central disk, the outer connector halves can be inserted so that they pivot around the hinge axis parallel to the plane of the common conductor. . In addition, a simple and conventional molding operation can be used to give the connector the required shape.

Although hermaphrodite connectors forming six contact points have a lot of flexibility and economic benefits, other hinge connectors can be used and some modifications are shown in subsequent figures. One such structure of a non-herogenic type is shown in FIGS. 9 and 10. The first element 70 has a pair of arms 72 and 73 which extend symmetrically (in this example) from the base 74 and are separated on both sides by the hole 76. The hole 76 forms a springing neck between the base 74 and the root portions of the arms 72, 73. Opposite ends of the arms 72 and 73 are spaced apart by a predetermined interval, and an expansion member 78 is inserted therein. The expansion member 78 is in this example an elongate member disposed along the longitudinal axis of the second connector half 80 and passes between the open ends formed by the arms 72 and 73 of the opposite connector half 70. I can do it. The short edge of the expansion member 78 is inclined inward toward the base, and the inclined edges 82 and 83 are fitted to the inclined edge 85 on the inner surfaces of the arms 72 and 73. The length of the extension member 78 is slightly larger than the diameter between the inner faces of the arms 72 and 73 to provide the desired spring action at the two contact points. Since the upper surface of the second connector 80 engages the lower surface of the first connector 70 (FIGS. 9 and 10), rotation is prevented by rotating in one direction perpendicular to the common surface. When fixing is achieved by the hinge action of the connector, the inclined surfaces 85 and the inclined surfaces 82 and 83 on the expansion member 78 move even if the two halves 70 and 78 of the connector move in different directions. Do not look.

The expansion member 78 need not be monolithic but may consist of two parts. In addition, the inner inclined edge 85 of the arms 72, 73 can be easily formed by casting. When two connector halves 70, 80 are to be mounted between both surfaces of the insulator structure, the same side mounting is not necessary and the hinge connection is formed in place by external restraining force.

Since the arms 72 and 73 are symmetrical, the expansion member 78 and the second connector half 80 can be pivoted in any direction when inserted so that the angle between the halves can be adjusted to ± 90 °. have. Since the connector is made of two thick plate-like materials and each half is planar (except for the expansion member 78), the hinge action can be performed without interference and at an angle of 90 ° or more in each direction. In addition, the expansion member 78 may be composed of a tongue body having three contact points, but the base of the connector half must have a portion to be mounted on the deflectable arms 72 and 73 and an axial attachment guide should be used.

The connectors shown in Figs. 11 and 12 show another example of the connector according to the present invention, provide a secure connection action with five edge contact points, and the hinge movement can be arbitrarily performed in any direction.

The first connector half 90 has a pair of symmetrical arms 91, 92 extending from the base 93. The tongue 95 is laterally biased in the portion 96, but this tongue does not act as an expanding member as in the structure of FIGS. 1-5. Instead, the elongate extension member 97 is mounted on the tongue body 95 and is flush with the main planes of the arms 91 and 92. The second half portion 100 of the connector has a base portion 101, the tongue tongue 103 being coplanar with the arms 91, 92 connected to the base portion by an angled knitting machine portion 104. It is. The tongue tongue 103 is received between the distal ends of the arm 91 and pivoted to a position between the inner perimeters of the arms. The tongue also has a hole 106 adapted to receive and engage the expansion member 97, and a front slot 107 disposed longitudinally and through which the expansion member 97 slides. Thus, the tongue 103 has a pair of arms with trailing contact areas 108a and 108b and front contact areas 109a and 109b. As shown in FIG. 12 only, the connector halves 90, 100 are disposed between the pair of insulated guide members 110, 111 in the operating position.

One of the connector halves may be inserted into or attached to one of the guide surfaces. In the connector of this embodiment, the expansion member 97 acts to spread the arms of the tongue tongue 103 outward so that four contact points 108, 108, 109, 109 are formed on the inner circumference of the arms 91, 92 of the other connector half 90. Contact at). The deflection of these arms 91, 92 provides additional spring action to ensure soft contact. Thus, the contact between both ends of the expansion member 97 and the inner edge of the hole 106 of the tongue 103 and the four contact points between the tongue 103 and the arms 91 and 92 are six desired places. Provides a soft edge contact point.

The expansion member 97 may be combined or assembled in various ways, and may be stamped or molded into an integral part of the tongue. The structures of FIGS. 9-12 move 90 relative to each other in either direction so that the connector elements can be connected. Thus, such a structure allows the circuit boards to be uniquely opened to the access position, and can access the circuits and circuit elements at that position.

Although various types of connectors are shown and described above in accordance with the present invention, the present invention is not limited thereto and all modifications and changes can be made within the scope of the appended claims.

Claims (1)

Consists of a pair of thin planar elements of a two-layer structure, one of which elements are arranged side by side along the edge of the other and their edges, pivoting with respect to each other in a fixed contact position Insertion-resistance electrical connector possibly removed.