JPH086371Y2 - Connector and connector mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a connector and a connector mounting structure in which the connection strength of a connector terminal piece is improved and the current capacity can be expanded.

[Prior Art] A conventional connector has a connector main body A having a space portion open to one side surface, as shown in FIG. 7, for example.
The plurality of terminal pieces B are arranged so that one end is located in the space portion and the other end is located outside the space portion, and the other end of the terminal piece B is bent at a substantially right angle. By the way, this connector is mounted on the wiring board C, for example, as shown in FIG. That is, the connector body A is arranged on the wiring board C so that the terminal piece B is inserted into the insertion hole D, and the terminal piece B is connected to the conductive pattern E by the solder member F. Therefore, the connector can easily electrically connect an external circuit or an external device to an internal circuit including the wiring board.

[Problems to be Solved by the Invention] In the above configuration, the current capacity of the terminal strip B is usually 5 to 5.
Although it is as small as 10 A or less, for example, the current capacity is 5
Sometimes it needs to be very large, like 0A. In such a case, the width of the terminal strip B is increased or the thickness thereof is increased, but when the connector is not mounted on the wiring board C and used, no problem occurs. When mounting on the wiring board C, since the insertion hole D of the wiring board C must be enlarged,
There was a problem that the conductive pattern around the insertion hole D was easily peeled off when the terminal piece B was inserted, and a sufficient current capacity could not be secured. Furthermore, when the insertion hole D is enlarged, there is a problem that the margin for forming the conductive pattern E is reduced.

On the other hand, for example, Japanese Utility Model Application Laid-Open No. 60-51878 "Socket for Electronic Equipment" discloses a connector in which a soldering portion of a connector terminal to a wiring board is divided into a plurality of parts. However, this is one in which the tip of the conductive plate is divided into two pieces to form a projecting piece for connecting to the wiring board, and in order to reinforce the connection strength between the projecting piece and the wiring board, in addition to the projecting piece, a connector body There is a problem in that it is necessary to provide a projection part that is fitted to the wiring board in part, and this projection part does not contribute to electrical connection, and therefore does not contribute to expansion of current capacity.

In addition, the actual crimping terminal No. 57-19178 "Crimp terminal structure" has three or four divisions because it cannot be directly inserted into the insertion hole of the standard hole diameter to connect a large current wiring material to one wiring board. There is disclosed a connector having a plurality of terminal pieces as described above. However, in a connector having three-divided terminal pieces, the terminal pieces are arranged side by side in a row, and although the connection strength against external force along the terminal piece arrangement direction is sufficient,
There is a problem that the connection strength against external force or moment in a direction orthogonal to or oblique to the arrangement direction is poor. Also,
A connector having four-divided terminal pieces is connected to a wiring board by bending a conductive plate having four terminal pieces into a U-shape and inserting the terminal pieces into the insertion holes provided at the apex of the trapezoid. Therefore, the performance exceeding that of the three-division type is exhibited in terms of connection strength and rigidity. However, if the accuracy of the bending process of the conductive plate is poor, or the accuracy of forming the corresponding insertion hole on the wiring board is poor, the terminal piece will be slightly deformed and inserted into the insertion hole. There is a limit to the allowable deformation range, and there is a problem that the terminal piece may be broken if it is forcibly deformed beyond this limit.

On the other hand, Japanese Utility Model Laid-Open No. 1-66763 “Printed Circuit Board” discloses a connector in which the soldering portion of the terminal is divided into three parts and the tips of the terminals are bent at right angles. This structure has a structure in which the bending moment force applied to the connection point is relaxed, the external force is dispersed, and a current several times as large as that in the one-point connection can be passed. However, in this product, three terminals that are divided into three and bent at a substantially right angle have the same shape with a horizontal portion having the same length and a vertical portion having the same length, and therefore, a line that connects the three terminals in a horizontal line. There is a problem that it is strong against an external force applied along the line, but is weak against an external force or a moment in a direction orthogonal to or oblique to this line. Further, since the wiring board side insertion holes corresponding to the three terminals arranged in a horizontal line are naturally arranged in a horizontal line, it is necessary to form three insertion holes at extremely close positions on the conductive pattern. There was a problem that the work was not easy.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a connector and a connector mounting structure in which the connection strength is increased by a simple structure and at the same time the current capacity can be surely expanded.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a connector of the present invention includes a connector main body that includes a space portion that opens to the back surface, and a central portion and a left and right portion at one end portion that is located outside the space portion. And three terminal pieces having different lengths are formed separately, and the respective terminal pieces are bent at substantially the same length from the tip, and the intermediate portion is inserted and held in the front surface of the connector body. And a conductive plate located at the other end in the space.

Further, the conductive plate is provided on both sides of the intermediate portion with projections that are embedded in the front surface of the connector body to prevent the conductive plate from coming off.

Furthermore, the connector mounting structure of the present invention comprises the above-mentioned connector, a wiring board having insertion holes corresponding to the divided terminal pieces formed at appropriate common conductive patterns, and the terminal pieces having the insertion holes. It is characterized by comprising a solder member for connecting each terminal piece and the conductive pattern in a state of being inserted into.

[Operation] According to this configuration, since the terminal pieces formed in three parts on one end side of the same conductive plate are bent at the different positions in the center and the left and right by the same length, the insertion hole on the wiring board side is formed. The positions of are staggered, and the connection strength obtained by soldering each terminal to the insertion hole can be a two-dimensional strength due to the surface formed by three points,
Improvement of connection strength and expansion of current capacity can be achieved at the same time.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6. FIG. 1 is a plan view showing an embodiment of the connector of the present invention, FIG. 2 is a sectional view taken along the line I--I of FIG. 1, and FIG. 3 is a conductive view shown in FIG. Perspective view of plate, 4th
1 is a rear view of the connector shown in FIG. 1, FIG. 5 is a sectional view of an essential part showing a connector structure in which the connector is mounted on a wiring board, and FIG. 6 is a solder of the connector structure shown in FIG. It is a bottom view before attachment.

In FIGS. 1 to 4, reference numeral 1 denotes a connector main body made of an insulating material such as resin, in which space portions 2 and 3 opening to the back are independently formed. Further, mounting legs 4 and 5 are integrally formed on the side surface of the connector body 1 in the longitudinal direction. A plurality of flat plate-shaped conductive plates 6 are inserted and held in the front wall 1a facing the opening of the connector body 1.

The conductive plate 6 has three terminal pieces 7, 8 and 9 formed by dividing the central terminal piece 6 and the left and right terminal pieces 7 and 8 with different lengths at one end 6b located outside the space 2. The terminal pieces 7, 8 and 9 are bent at substantially right angles in the same direction by the same length from the tips. For these reasons, the central terminal piece 7 projects most from each terminal piece 7, 8 and 9, and the left and right terminal pieces 8 and 9 are 1/2 of the central terminal piece 7.
It is given a protruding length of a degree. The conductive plate 6 has an intermediate portion inserted and held in the front wall portion 1a of the connector body 1 and the other end portion.
6a is located in the space 2 of the connector body 1.

In addition, on both sides of the intermediate portion of the conductive plate 6, the connector body 1
A projection 10 is formed on the front surface of the to prevent it from coming off. A hole or the like may be formed instead of the protrusion 10.

The connector thus constructed is mounted on the wiring board 11 as shown in FIGS. 5 to 6, for example. That is, the connector body 1 is arranged on the wiring board 11 so that the terminal pieces 7, 8, 9 are inserted into the insertion holes 12, and then connected to the common conductive patterns 13, 13 ... With the solder member 14. . As a result, the split terminal pieces 7, 8, 9 at the one end 6b of the conductive plate 6 are connected to the common conductive pattern 13, 13, ...

In this way, the connector has an insertion hole on the wiring board 11 side.
The positions of 12 are arranged in a staggered arrangement, and the connection strength obtained by soldering the terminal pieces 7, 8 and 9 of the insertion hole 12 can be made two-dimensional by a surface formed by three points. Further, since the terminal pieces 7, 8 and 9 are three, the insertion holes 12 corresponding to the zigzag arrangement formed by the tips of the terminal pieces 12
Even if the staggered arrangement is slightly distorted, the bent shape of the terminal pieces 7, 8 and 9 can be considerably deformed, and the terminal pieces can be connected to each other within a considerable allowable range without breaking.
Further, in the insertion holes 12 on the side of the wiring board 11 that are arranged in a staggered manner, it is possible to secure a certain distance between the insertion holes 12, so that it is possible to give a margin to the drilling work of the insertion holes 12.
Further, the terminal pieces 7, 8, 9 can be easily inserted into the wiring board 11 through the insertion holes 12 arranged in a staggered manner, and damage such as peeling of the conductive pattern 13 at the time of insertion that easily occurs in insertion into an excessively large insertion hole. It can be greatly reduced. Furthermore, the terminal pieces 7, 8 and 9 can be securely connected to each conductive pattern 13 and at the same time a sufficient current capacity can be secured, and each terminal piece 7, 8 and 9 can be individually connected to the corresponding conductive pattern 13. When soldering, since the terminal pieces 7, 8, 9 themselves have a small heat capacity due to division, the soldering work can be performed reliably and easily. Further, unlike the one end portion 6b side, the other end portion 6a of the conductive plate 6 located in the connector body 1 is formed in a flat plate shape without being divided, so that it is not deformed when connected to an external connector. It is possible to connect smoothly and surely without causing any trouble.

In addition, the conductive plates 6 are provided on both sides of the middle portion of the connector body 1
Since the protrusion 10 is embedded in the front surface of the connector to prevent the conductive plate 6 from coming off, the pair of protrusions 10 function as a stopper for preventing the conductive plate 6 from coming off the connector body 1 when the conductive plate 6 is inserted and held in the connector body 1. As a result, the coupling strength of the conductive plate 6 with respect to the connector body 1 can be increased, the conductive plate 6 can be prevented from loosening due to the insertion and removal of the external connector, etc., and a certain quality can be guaranteed for a long period of time.

Furthermore, the connector mounting structure includes the above-mentioned connector, a wiring board 11 in which insertion holes 12 corresponding to the divided terminal pieces 7, 8 and 9 are formed in common conductive patterns 13 in appropriate places, and each terminal piece 7. With the terminals 8, 8 and 9 inserted in the insertion holes 12,
Since the soldering member 14 for connecting the 8, 9 and the conductive pattern 13 is provided, the three divided terminal pieces 7, 8, 9 are connected by the common conductive pattern 13 and enlarged according to the number of terminal pieces. Based on the current capacity, sufficient current can be supplied to the external connector via the common conductive pattern 13. Also,
Since the insertion holes 12 formed in the wiring board 11 are in a staggered arrangement,
It is possible to secure a certain distance between the insertion holes 12 and to easily perform the punching work.

In the above embodiment, the terminal pieces 7, 8 and 9 are such that the central terminal piece 7 is the longest and the left and right terminal pieces 8 and 9 are about half the length of the terminal pieces. It is also possible to make the left and right terminal pieces 8 and 9 the longest, and the center terminal piece 7 to make the left and right terminal pieces 8 and 9 half the length of the terminal pieces.

In addition to forming the conductive pattern 13 on the wiring board 11 by printing, it may be formed by attaching a flat conductor.

[Effects of the Invention] As described above, in the connector of the present invention, the terminal pieces formed in three parts on one end side of the same conductive plate are bent at the same length at different positions in the center and the left and right. Therefore, the positions of the insertion holes on the wiring board side are arranged in a staggered arrangement, and the connection strength obtained by soldering each terminal piece to the insertion hole can be a two-dimensional strength due to the surface formed by three points. Since this is a book, even if the staggered arrangement of the tip of the terminal piece and the zigzag arrangement of the corresponding insertion holes are slightly different, by deforming the bent shape of the terminal piece to a considerable extent, the terminal piece can be broken with a considerable tolerance. Connection can be made without any need, and a certain distance can be secured between the insertion holes in the wiring board side insertion holes that are arranged in a staggered manner, so that there is a margin in the drilling work of the insertion holes. , Also through staggered insertion holes It is easy to insert the terminal piece into the wiring board, and the damage such as peeling of the conductive pattern during insertion that is likely to occur in the insertion hole that is too large can be greatly reduced. It is surely connected, and at the same time, it can secure sufficient current capacity.When soldering each terminal piece to the corresponding individual conductive pattern, the terminal piece itself has a small thermal capacity due to the division. Work can be performed reliably and easily, and the other end of the conductive plate located in the connector body is different from the one end side and is configured in a flat plate shape without being divided, so that it can be connected to the external connector. At the time of connection, there is an excellent effect that the connection can be made smoothly and surely without deformation.

Further, since the conductive plate is provided with projections that are embedded in the front surface of the connector main body on both sides of the intermediate portion to prevent it from coming off, when the conductive plate is inserted and held in the connector main body,
The pair of protrusions function to prevent the conductive plate from being pulled out from the connector body, which enhances the bonding strength of the conductive plate to the connector body and prevents the conductive plate from rattling when the external connector is inserted or removed. In addition, the connector mounting structure of the present invention forms the insertion hole corresponding to the above-mentioned connector and the divided terminal piece in a common conductive pattern in a proper position. And a solder member that connects each terminal piece to the conductive pattern in a state where the terminal piece is inserted into the insertion hole. Therefore, the three divided terminal pieces are common. Based on the current capacity that is connected by the conductive pattern and expanded according to the number of terminal pieces, sufficient current can be supplied to the external connector through the common conductive pattern, and wiring is also possible. Since the insertion holes formed in the substrate are in a zigzag arrangement, there is an effect that a certain distance can be secured between the insertion holes and the boring operation can be easily performed.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the connector of the present invention,
2 is a sectional view taken along the line I-I of FIG. 1, FIG. 3 is a perspective view of the conductive plate shown in FIG. 1, and FIG. 4 is a view of the connector shown in FIG. A rear view, FIG. 5 is a cross-sectional view of an essential part showing a connector structure in which a connector is mounted on a wiring board, FIG. 6 is a bottom view of the connector structure shown in FIG. 5 before soldering, and FIG. FIG. 8 is a plan view showing an example of a conventional connector, and FIG. 8 is a cross-sectional view of essential parts showing a mounted state of the connector shown in FIG. 1 ... Connector body 2, 3 ... Space part 6 ... Conductive plate 6a ... Other end part 6b ... One end part 7,8, 9 ... Terminal piece 10 ... Projection 11 ... Wiring board 12 ... Insert hole 13 ... Conductive pattern 14 ... Solder member

Claims (3)

[Scope of utility model registration request] 1. A connector main body including a space portion open to the back surface, and three terminal pieces having different lengths at the center and on the left and right sides are separately formed at one end portion located outside the space portion, and Each terminal piece is bent at substantially the same length from the tip, and the middle portion is inserted and held in the front of the connector body.
And a conductive plate having the other end located in the space. 2. The connector according to claim 1, wherein the conductive plate is provided with projections, which are embedded in the front surface of the connector main body, on both sides of the intermediate portion to prevent the conductive plate from coming off. 3. The connector according to claim 1, a wiring board having insertion holes corresponding to the divided terminal pieces formed at appropriate common conductive patterns, and each terminal piece is inserted into the insertion hole. A connector mounting structure comprising: a solder member for connecting the terminal pieces and the conductive pattern in a state.