KR850001894Y1 - A spacer element for use in an electrical connector apparatus - Google Patents

Abstract

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Description

Electrical connector device

1 is a partial cross-sectional view of the electrical connector device according to the present invention.

2 is a partial ablation perspective view showing a number of intermediate steps in assembling an electrical connector device according to the present invention.

3 is a plan view of a spacer used in the electrical connector device according to the present invention.

4 shows two cross-sectional views of a spacer during connector device assembly.

The present invention consists of a first connector frame that is adjustable relative to a circuit board, and a plurality of connector pins arranged in a predetermined pattern in the holes of the circuit board and the holes of the first connector frame. A portion of the pin protruding from one side relates to an electrical connector device forming a first connector together with a first connector frame. Portions of the pin that protrude from the other side of the circuit board can be used to attach the leads.

Such connector devices are widely used in the electrical engineering and electronics industries. Connecting pins having a rectangular cross section are used to make the connection in the so-called "wire wrap" technique. The ends of the connecting conductors stripped of the insulating material are wound several times around the connecting pins. As a result, good contacts are formed due to mechanical deformation.

Sometimes it is necessary to connect between multiple connecting pins and other connectors. Conventionally, a second combination of connecting pins is disposed in the appropriate holes of the circuit board and placed in their second connector frame. The ends of these connecting pins protruding from one side of the circuit board are used to form a connection with the pins from the first group of connector pins belonging to the first connector. This method indirectly requires a significant amount of material and space.

It is an object of the present invention to realize in a connector device of the type described above a means for forming a connection between a second connector and a first connector in a relatively small space with a relatively small amount of material.

According to this object, the second end of the pin protruding from one side of the circuit board is freely held upon attachment of the connecting lead. The second connector frame is disposed at the second end of the pin so that the second connector frame together with the second end of the pin form a second connector.

The second connector frame is mounted at a specific distance from the circuit board by a pair of spacers, is attached to both ends of the first high connector frame, and passes through the appropriate holes and the spacers of the circuit board to connect the second connector frame. It is connected to the first connector frame by mounting pegs extending up to the holes of the first connector. Each of these mounting pegs has a head with a hook. The hooked heads are bitten by the second connector frame behind the edges of the respective holes.

In this structure the first and second ends of the connecting pins are used to form the connectors together with the connector frames.

A preferred example of the connector according to the present invention is characterized in that a cam-shaped ridge is formed which protrudes in two opposite directions along the edges of the holes in the second connector frame on the side facing the circuit board. Each of the end surfaces of the spacers facing the second connector frame has semicircular spirally protruding edges connected to the second connector by axially facing edges. In this example, it is possible to adjust the spacing between the first and second connector frames by rotating the spacers.

The adjustment is particularly desirable when circuit boards of various thicknesses are used. Since equal lengths of connecting pins are used, irrespective of the thickness of the circuit board, the spacing apart by the spacers is related to the thickness of the circuit board. Thus, it is possible to adjust the spacing between the first and second both connector frames by such a spacer.

The spacing is preferably determined by the length of the mounting pegs. When both connector frames are joined by mounting pegs and the spacers are adjusted so that the hookheads of the pegs are firmly snapped to the edges of the holes in the second connector frame, the relative spacing between the two connector frames is determined by the length of the mounting pegs. do.

The invention is described in more detail below in the embodiments illustrated in the accompanying drawings.

1 shows an electrical connector device according to the present invention. The circuit board 1 has a plurality of through holes arranged in a predetermined pattern, and pins are pressed into those holes. All pins are of equal length. These pins 2 are arranged in corresponding holes of the circuit board such that all of the portions of the pin protruding from one side of the circuit board have the same length. Then, the first connector frame 3 is disposed on the pins at the lower side of the circuit board, and together with the first portion 34 of the pin 2, the connector frame 3 protrudes from the lower side of the circuit board. male) to form a connector. The connector frame 3 is a long box-shaped member having a bottom part and four side walls. Holes are arranged in the long bottom part according to the above-described predetermined pattern. Pins 2 are arranged in these holes. The general structure of such a connector is considered to be known to those skilled in the art and thus will not be described in detail. Detailed description is only required at the longitudinal ends of the connector. These parts are engaged with the circuit board 1. See Figure 2. The bottom part 4 of the connector has ends protruding outside the main box connector. Blocks 5 protruding in the longitudinal direction of the bottom part 4 and in the direction of the circuit board 1 are integrally formed in the connector body part. Between the block 5 and the bottom part 4, a hole 6 having the same dimension as the diameter of the mounting peg 7 is formed. Between each block 5 and the adjacent edge part of the hole 6, a pair of trapezoidal protrusions 8 which have a cam-shaped support surface are formed. However, this part 8 does not protrude from the bottom part 4 as much as the edge block 5. A projection 9 is formed on the other side of the extension from the bottom portion 4, and the projection 9 serves as a support member for the block 10 formed around the mounting pegs 7.

As shown in FIG. 1, the second connector frame 13, which is similar in shape to the first connector frame 3, is separated from the other side of the circuit board, and protrudes from the other side of the circuit board 1. As shown in FIG. The second portion 36 of the pin 2 is guided into a hole formed in the bottom portion 14 of the connector frame 13. These holes are arranged in the above-described predetermined pattern. Thus, the second part 36 of the pin 2 protruding from the other side of the circuit board 1 together with the connector frame 13 forms a complete male connector.

As also shown in FIG. 1, the connector frame 13 is separated from the circuit board 1 by the spacer 20. The spacer will be described later in detail. The frames 3 and 13 are mounted on the circuit board 1 at both ends by the peg 7. The peg 7 shown in the lower part of FIG. 1 has a block, which is supported by the supporting surface of the protrusion 9 after assembly. The other end of the peg 7 with the hookhead 11 engages the bottom portion 38 of the connector frame 13 behind the edge of the hole 6.

As shown in detail in FIG. 1, the length of the peg 7 determines the spacing between the connector frames 3 and 13. It will be apparent that problems may arise when the circuit board does not have a uniform thickness. Therefore, when the thickness of the circuit board 1 changes, the length of the spacer 20 should be suitable to form a stable structure after assembly. In this type of connector, the spacings A and B shown in FIG. 1 are important for making a good connection with suitable female connectors. The tolerances of the gaps are specified in the so-called DIN standard.

In the arrangement of the pins 2 in the circuit board 1, the length of the portion 34 of the pin protruding from the lower side of the circuit board is the distance B after the connector frame 3 is arranged on the circuit board 1. It will be clear that can be chosen to match the value of the DIN standard. In order to maintain the spacing A within the specified tolerance limits, for example, the spacing between the connector frames 3 and 13 must be precisely fixed regardless of the thickness variation of the circuit board 1 or other tolerances that may exist in the structure as a whole. It needs to be adjustable. Therefore, the present invention provides a spacer of a special structure.

As shown in FIG. 2 and FIG. 3, the spacer has a cylindrical body 23. As shown in FIG. The cylindrical portion is flat on its lower side, but the upper surface is formed with a helical edge 31 extending helically over almost half of the circumference along the edge thereof, and an edge 32 facing in the axial direction is formed at an end of the edge. It is. The outer diameter of the cylindrical spacer is smaller than the spacing between the two block portions 5 protruding from the bottom of the connector frames, allowing the spacer to be mounted between the block portions and the spiral extension edges to cooperate with the projection 8.

By rotating the spacer 20, the distance between the connector frame 13 and the circuit board 1 is reduced by the spiral extension edges of the cam-shaped protrusion 8 at the lower side of the connector frame 13 and the upper surface of the spacer 20. It can be seen without further explanation of the spacer that it can be altered due to the cooperation between. The adjustment is performed after assembling the various parts so that the hooked head 11 and the upper end of the peg 7 firmly engage the corresponding edges of the holes 6 formed in the connector frame 13 and then the connector frame 13 and the circuit. It can be used to adjust the spacing between the substrates 1.

Since the length of the mounting pegs 7 determines the mutual spacing between the connector frame 13 and the connector frame 3, the possible variation in the thickness of the circuit board 1 is eliminated by rotating the spacers and thus the two connectors The spacing between the frames is determined by the length of the peg 7.

Another problem can arise with such a structure. By rotating the spacer 20 to adjust the spacing between the connector frame 13 and the circuit board 1 and the spacing between the connector frame 13 and the connector frame 3, in particular, the hook head 11 and the peg ( 7) tension may be imparted. For example, if the spacer 20 is rotated too tightly or if the connector frame 13 is too heavily loaded, the tension may be too high. In this case the effect of the tension is such that the upper part of the peg 7, in particular the hook head 11, loosens the connection formed by the hook head 11 and the edges of the corresponding hole 6 of the connector frame 13. It moves inward (by deformation) below. In this situation, the connector frame 13 may become loose.

Another example of a spacer according to the present invention provides a solution for this problem. As shown in Figs. 2 and 3, the spacer 20 has a central circular hole 21 extending from the lower side. The hole 21 is through an eccentrically positioned hole 22 extending from the upper side of the spacer to the lower side thereof. As shown in FIG. 3, the mouths 21, 22 have a common wall portion 28, which wall portion 28 extends over almost half the circumference of the hole 21 in the illustrated example. . The remaining unaligned wall portions form a sickle-shaped transient edge 127 adjacent the lower side of the spacer.

The protruding pins 24 disposed in the circular holes inside the spacer operate with a key passage 25 extending axially into the peg 7. As shown in FIG. 2A, the spacer 20 can only be moved above the peg 7 in one position because of the protruding pins 24. At the distal end of the axial key passage 25, which cooperates with the protruding pin 24 when the spacer moves, a radial groove 26 is formed which extends over half the circumference of the peg 7. As soon as the protruding pin 24 reaches the radial groove 26 and the spacer 20 rotates a short distance, the protruding pin 24 moves within the groove 26 so that the spacer 20 moves from the peg 7. Don't let it fall out.

In assembling the electrical connector device according to the present invention, the peg 7 is guided in the hole 6 of the connector frame 3 and then in the corresponding hole of the circuit board 1. As shown for the one end of the connector frame in FIG. 2, the spacer 20 is formed at the other end of the circuit board so that the protruding pin 24 is positioned at the tip of the groove 26 through the key passage 25. Is moved to 7). Next, the state shown in FIG. 2B is obtained. The spacer 20 is then rotated about 180 ° (in the counterclockwise direction shown in FIG. 2C) and guided in the groove 26 until the protruding pin 24 reaches the other end of the groove, not shown. Thus, the connector frame 3 is firmly fixed, and the other end of the connector frame 3 (not shown in FIG. 2) is similarly fixed.

4A and 4B show two partial cross-sectional views along the same plane as the cross section of FIG. These figures relate, in particular, to the left peg 7 and corresponding spacer 20 in FIG. As soon as the spacer is moved on the peg 7 and brought to the state of FIG. 2b, the peg 7 and the spacer 20 are mutually disposed as shown in FIG. 4b. The connector frame 13 is not shown in FIG. 2B. The sickle-shaped edge is located on the left side of FIG. 4 b, and the right side of the peg 7 is completely engaged with the common wall portion 28 of the holes 21 and 22.

Next, the spacer is rotated about 180 ° so as to be in the state shown in FIG. 2C, and the state is shown in partial section in FIG. 4A. At this time, the left side of the peg 7 is completely engaged with the common wall portion 28 of the holes 21 and 22. In this state, the peg 7 is arranged so that the connector frame 13 can be arranged on the peg 7. Can bend slightly (right) to the right. Under minimum pressure, the hookhead 11 bends backwards to cause the peg 7 to be guided in the hole 6 of the connector frame 13, after which the hookhead 11 resiliently returns and the Engages the edge to achieve the bite connection shown in FIG.

After the connector frame 13 is so disposed, the spacers are again rotated clockwise as shown in FIG. 2d to remove possible non-uniform tolerances as described above and the connector frames 3 and 13 are to the right. It is fixed at an intermediate distance. As shown in FIG. 3, since the holes 21 and 22 of the spacer are eccentric and the holes 22 are of a special shape, the pegs 7 in FIG. ), The right side part is completely engaged with the common wall portions of the holes 21 and 22. In this state, the pegs 7 cannot be moved to the right, or the hook head 11 cannot be moved to the right, or at least the hook head 11 can be moved away from the edge of the hole 6 to the right. Even when tension is generated, the mechanical connection is kept unbroken.

As shown in the figures, the spacer 20 has a toothed protrusion 29 at one edge to facilitate its rotation. In addition, other types of edges may be used to facilitate the rotational movement. For example, it is possible to use hexagonal protruding edges which act similarly to the gripping edges of the tool.

In another example of the present invention, which is not shown in the drawing, the connector frame 3 is located at a distance from the circuit board 1. Between the connector frame and the circuit board, a conventional cylindrical spacer having a predetermined length is used.

When the pins 2 are arranged in the circuit board 1, care should be taken that the portion of the pins protruding from the side toward the connector frame 3 has a predetermined length irrespective of the thickness of the circuit board 1. Another connector frame 13 is then arranged by the long pin and adjusted by the spacer 20 described above.

Above all, it is based on the structure in which the connector frame 3 is arranged after the connecting pin 2 is pressed into the hole of the circuit board 1, but the connecting pin guided in the hole of the circuit board 1 It is also possible to start with a complete connector.

Although the above description is based on connecting pins of equal length from one side of the circuit board, it is also possible to allow a predetermined number of pins to protrude long. In that case, a male connector is realized. The first contact is formed by the other protruding pins when the female connector is disposed on the male connector. This is desirable, for example, when connectors are used to connect MOS circuits. The other protruding pin may be grounded so that the first MOS circuit to be connected may be grounded. Other currents are supplied to the MOS circuit through the other pins.

Also, the first and second connector frames may have the same shape.

The present invention provides an electrical connector device in which two connector frames are mutually mounted at a predetermined interval regardless of tolerances of a circuit board disposed therebetween. The mounting means act to provide a connection that can withstand high partial stress as well as its spacing adjustment.

Although the present invention has been described with reference to its preferred examples, it is obvious that various modifications are possible within the scope of the present invention. For example, it is possible to omit the projection 9 which forms the surfaces supporting the block 10 at the end of the peg 7, and for example the block 10 may have a completely different shape.

Claims (1)

The first and second connectors are provided one by one on each side of the circuit board away from the circuit board, and are electrically connected by the connectors and the plurality of connecting pins of the circuit board. An electrical connector device provided with a pair of mounting pegs for supporting and extending through holes in the circuit board, wherein a cylindrical spacer is provided on each mounting peg between one of the connector boards movable relative to the circuit board, The spacer having an edge extending helically over about half the circumference of the connector-side end, and the edge cooperates with the cam-shaped protrusion of the connector to provide movement between the connector and the circuit board in response to the rotation of the spacer. An electrical connector device characterized in that.