JP2000077120A - Terminal structure of connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal structure of a connector capable of preventing a short circuit between circuit patterns with no increase in the number of parts. SOLUTION: In this connector terminal structure 1 such that connection terminals 3a, 3b are fixed in two stages to a wall part 2b of a connector housing 2, a crosswise interval G is set by inverting the connection terminals 3a such that the connection terminals 3a, 3b respectively curve to the opposite directions in their bent curbed parts, while a lengthwise interval L is set in positions at which the connection terminals 3a, 3b are bent for connection to circuit patterns 4a, 4b on a printed circuit board 5. Thereby, connection positions of the connection terminals 3a, 3b and the circuit patterns 4a, 4b become staggering so that the lengthwise and crosswise intervals L, G are enlarged. Acoordingly, when the connection terminals 3a, 3b are solder-mounted, no danger of adhering of solder to the adjacent circuit patterns 4a, 4b occurs so that a short circuit or the like is certainly prevented. Because a connection terminal member having a same shape can be substantially used as the two kinds of connection terminals 3a, 3b by a change of its fixing structure, a cost is lowered and working man-hours and the like are reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting type connector structure mounted on a printed circuit board on which a circuit pattern is formed, and more particularly, to a connector structure which projects from a connector housing and is bent at a predetermined position toward the printed circuit board.
The present invention relates to a terminal structure of a connector whose tip is soldered to a circuit pattern.

[0002]

2. Description of the Related Art Conventionally, when power is supplied to a circuit pattern formed on a printed wiring board or signal transmission / reception is performed,
Mounting type connectors are frequently used. As an example of this type of connector, a terminal structure of a connector disclosed in Japanese Patent Application Laid-Open No. 1-225073 will be described. As shown in FIG. 6, a connector 42 mounted on a printed wiring board 41 is provided.
Is a connection terminal 4 fixed to the housing 43 in two upper and lower stages.
4 is provided. The connection terminal 44 is connected to the housing 4
3 is bent toward the printed wiring board 41 at a predetermined position from the rear wall surface, and the front end is soldered to the circuit pattern 45. The tip of each connection terminal 44 projects into the opening as a contact to the mating connector.

Since the connector 42 is fixed to the printed wiring board 41 by screws or the like, a mating connector can be inserted into or removed from the opening. Since the connection terminals 44 are soldered to the circuit patterns 45 formed in a horizontal line, a mating connector is inserted into the opening to supply power to the circuit pattern 45 and transmit and receive signals. be able to.

[0004]

By the way, the current electronic equipment is required to have a high density of electronic parts, and the above-mentioned mounting type connector has a large number of connection terminals, and the interval (pitch) between the connection terminals is small. For example, the interval is set to be as small as about 3 mm. Therefore, the number of circuit patterns increases in accordance with the number of connection terminals, and accordingly, the interval between the patterns becomes inevitably narrow. Therefore, in the connector having the above-described configuration, when the connection terminal 44 and the circuit pattern 45 are soldered, there is a problem that the solder is applied to the adjacent circuit pattern, thereby causing a short circuit. Note that, in the above-mentioned Japanese Patent Application Laid-Open No. 1-225073, a means for eliminating a short circuit or the like due to soldering is disclosed, but a new member is required, which leads to an increase in the number of parts and an increase in cost. Would.

The connection terminals 44 are fixed in upper and lower stages, but the lengths of the lower connection terminals 44 and the upper connection terminals 44 are necessarily different. Therefore, the connector 42
It is necessary to prepare two types of connection terminals 44 when molding the, and there has been a problem that complicated man-hours for parts management and the number of manufacturing steps are increased, leading to an increase in cost.

SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal structure of a connector which can prevent a short circuit between circuit patterns without increasing the number of components and an object of the present invention.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to provide a connector housing in which an opening into which a mating connector is inserted is fixed in a layered manner at predetermined intervals to a wall forming the opening. And a connection terminal having one end protruding into the opening and the other end protruding to the rear side of the wall, and a printed circuit board formed with a circuit pattern to which the other end of the connection terminal is connected. In the terminal structure, the other end of the connection terminal is branched in the opposite direction while maintaining a predetermined horizontal interval on the back side of the wall portion, and the adjacent circuit patterns are shifted in the connection direction by a predetermined interval in the connection direction. This problem can be solved by a connector terminal structure characterized in that the bent position of the terminal is shifted by a predetermined vertical interval.

In the terminal structure of the connector,
Preferably, the connection terminal is a connection terminal member having the same shape with a bent portion formed in the middle thereof, one of which is inverted so that the bent portions are in opposite directions to each other, and overlaps the wall portion in a plane. At the same time, and bend the predetermined positions, which are different from each other by the vertical interval, toward the printed wiring board.

According to the terminal structure of the connector having the above structure,
The other end of the connection terminal is branched in the opposite direction while maintaining a predetermined horizontal interval on the back side of the wall, and the adjacent circuit pattern is shifted in the connection direction by a predetermined interval so that the bending position of the connection terminal is set to a predetermined vertical position. Shift by the interval. That is, for example, the connection terminals in the lower layer are branched in the same direction, and the connection terminals in the upper layer are branched in the same direction in the opposite direction to the connection terminals in the lower layer. The connection terminal is bent in the direction of connection with the circuit pattern, but the bending position differs between the upper connection terminal and the lower connection terminal, and a predetermined vertical interval is secured between the two bending positions in a plane.

Therefore, the connection position between the connection terminal and the circuit pattern is extended in the vertical direction of the printed wiring board at a predetermined vertical interval, and does not line up horizontally. Further, the printed wiring boards are spread in the horizontal direction at a predetermined horizontal interval, and do not line up vertically. When viewed from above, it looks like a so-called staggered foot. Therefore, when the circuit pattern and the connection terminal are soldered, the interval between the soldering positions is expanded in the vertical and horizontal directions, so that a short circuit or the like can be reliably prevented.

The connection terminal is a connection terminal member having the same shape with a bent portion formed in the middle thereof, and one of the connection terminals is inverted so that the bent portions are opposite to each other, and the connection terminal is planarly formed on the wall portion. While being fixed so as to overlap with each other, different predetermined positions are bent toward the printed wiring board side at the above-mentioned vertical intervals. That is, the connection terminal is formed by punching a metal plate by a press or the like, and has the same shape in which a bent portion is formed in the same direction halfway at the stage of the connection terminal member at the time of punching.

When fixing to the connector housing, for example, the bent portion at the time of punching is aligned in one direction for the lower connection terminal, and the upper connection terminal is turned upside down in the direction opposite to the lower connection terminal. After alignment, fix it in place on the connector housing. Next, the upper and lower connection terminals are bent toward the printed wiring board side corresponding to the soldering position on the printed wiring board, so that the above-mentioned vertical spacing can be secured and soldering can be performed. Therefore,
The connection terminal is substantially the same as using two types of connection terminals by changing the fixing form of one type of connection terminal member, and the number of components can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a terminal structure of a connector according to the present invention will be described in detail with reference to FIGS. 1 is a perspective view showing a terminal structure of the connector of the present embodiment, FIG. 2 is a plan view in FIG. 1, FIG. 3 is a cross-sectional view in FIG. 1, FIG. 4 is a plan view showing the configuration of the connection terminal, and FIG. 1
It is a perspective view which shows the manufacturing process of the connection terminal in FIG.

As shown in FIG. 1, a terminal structure 1 of a connector according to the present embodiment has one end integrally fixed to a connector housing (hereinafter simply referred to as a housing) 2 constituting a mounting type connector, and a printed wiring. This is a structure of a plurality of male connection terminals 3a, 3b whose other ends are connected to circuit patterns 4a, 4b formed on a substrate 5. The shape of the connection terminals 3a and 3b is the same, and the fixed and bent shapes are different depending on whether they are arranged in the upper layer or the lower layer in the housing.

The housing 2 is formed by integrally molding a hard synthetic resin, and fixed portions 2a are provided at both ends.
It is fixed to the printed wiring board 5 by screws 6.
The connection terminals 3a and 3b have a two-tiered configuration in a penetrating state from the back surface of the wall 2b toward the opening 2c. And
Portions of the connection terminals 3a and 3b protruding from the opening 2c are electrically connected to female connection terminals of a mating connector (not shown) as the connectors are fitted. Further, a portion protruding from the back side of the wall 2b is bent toward the printed wiring board 5 side, and an end of the connection terminal 3a is connected to the circuit pattern 4
a, the end of the connection terminal 3b is soldered to the circuit pattern 4b.

As shown in FIG. 2, the terminal structure 1 of the connector according to the present embodiment is configured such that, of the connection terminals 3a and 3b, a portion near the wall penetrating the wall 2b and a portion protruding from the opening 2c are: They overlap in a plane. The upper connection terminal 3b penetrating the back side of the wall 2b is bent to the left in the drawing, and the lower connection terminal 3a is bent to the right in the drawing, so that a horizontal gap G is provided therebetween.
Are formed. In FIG. 2, the horizontal direction in the figure is a horizontal direction for convenience, and the vertical direction is a vertical direction for convenience. As shown in FIG. 3, the upper connection terminal 3b is bent toward the lower printed wiring board 5 at a position close to the wall 2b, and the lower connection terminal 3a is separated from the bent position of the connection terminal 3b by a vertical distance L. It is bent downward at a separated position. Note that, in FIG. 3, if defined based on FIG. 2, the left-right direction in the figure is the vertical direction.

As shown in FIG. 4, the connection terminals 3a, 3a
The connection terminal member b is formed by punching a single metal plate by pressing or the like as the connection terminal member 3 in a stage before being fixed to the housing 2. That is, the connecting portion 11 which is a part of the metal plate
A large number of connection terminal members 3 are formed in a chain at the end of the connection portion 11a formed at regular intervals. This connection terminal member 3 is provided with a crank-shaped bent portion bent at a right angle in the same direction, and is devised so as to form a large number of connection terminal members 3 by making the intervals between the connection terminal members 3 close. Have been.

Next, the terminal structure 1 of the connector of the present embodiment.
Will be described. First, the connection terminal member 3 is turned upside down and positioned at the position where the connection terminal 3a in the mold for molding the housing 2 is fixed. Therefore, as for the connection terminal member 3 shown in FIG. 4, the bending direction on the left side in the figure changes to the right side by turning over. In addition, the connection terminal member 3 is positioned as it is above the position where the connection terminal 3a is fixed and at the position where the connection terminal 3b is fixed. Then, by molding the housing 2 integrally with the connection terminal member 3, as shown in FIG.
Is formed.

Next, as shown in FIG. 1 and FIG. 3, the front portion of the connection terminal member 3 is formed at a substantially right angle downward from the predetermined position corresponding to the circuit patterns 4a and 4b of the printed wiring board 5 below the printed wiring board 5 side. Bendable. Then, the tip is further bent so as to be in surface contact with the circuit patterns 4a and 4b, and then soldered to the circuit patterns 4a and 4b. As a result, a connector having a plurality of connection terminals 3a and 3b connected to form a predetermined circuit is fixed at a predetermined position on the printed wiring board 5. Note that the bending angle of the connection terminals 3a and 3b is not limited to a right angle, and can be changed as appropriate.

As described above, in the terminal structure of the connector of the present embodiment, the connection terminals 3a and 3b have the same shape,
By changing the fixing structure of one connection terminal member 3, 2
Various types of connection terminals 3a and 3b are configured. Therefore, cost can be reduced by reducing the number of parts. Also,
By setting the horizontal gap G and the vertical gap L between the connection terminals 3a and 3b, the connection positions with the circuit patterns 4a and 4b are staggered to widen the vertical and horizontal gaps. It is possible to prevent so-called bridges, which are caused by soldering up to the circuit pattern thus formed, beforehand. Therefore, highly reliable high-density mounting can be realized.

[0021]

As described above, according to the terminal structure of the connector according to the present invention, the other end of the connection terminal is branched in the opposite direction at a predetermined horizontal interval on the back side of the wall, and the adjacent circuit pattern is formed. Are shifted in the connection direction by a predetermined distance, whereby the bending position of the connection terminal is shifted by a predetermined vertical distance.
Therefore, the connection position between the connection terminal and the circuit pattern is expanded in the horizontal direction by the horizontal interval, and shifted in the vertical direction by the vertical interval, so that the connection position is not in a horizontal line but in a staggered pattern. Therefore,
When the circuit pattern and the connection terminal are soldered, the distance between the soldering positions is increased in the vertical and horizontal directions, so that a short circuit between adjacent circuit patterns can be prevented.

Further, the connection terminal is a connection terminal member having the same shape with a bent portion formed in the middle thereof, one of which is inverted so that the bent portions are opposite to each other, and overlaps the wall in a plane. And bent at different vertical positions toward the printed circuit board side at vertical intervals. Therefore, since the connection terminal members having the same shape can be used as substantially two types of connection terminals, the number of parts can be reduced, and the cost and the number of work steps can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a terminal structure of a connector of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a longitudinal sectional view in FIG.

FIG. 4 is a plan view showing a connection terminal member in FIG. 1;

FIG. 5 is a perspective view showing a manufacturing process of the connection terminal in FIG. 1;

FIG. 6 is a perspective view showing a terminal structure of a conventional mounting type connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector terminal structure 2 Connector housing 2a Fixed part 2b Wall part 2c Opening part 3 Connection terminal member 3a, 3b Connection terminal 4a, 4b Circuit pattern 5 Printed wiring board G Horizontal space L Vertical space

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5E023 AA04 AA16 BB02 BB22 CC23 CC24 CC26 EE02 GG06 HH06 HH13 HH16 HH18 HH28 5E077 BB23 BB31 CC23 CC26 DD01 GG08 JJ05 JJ18 JJ20 JJ21 JJ30

Claims (2)

[Claims] A connector housing having an opening into which a mating connector is inserted; a connector housing fixed to a wall forming the opening at predetermined intervals in a layered manner; one end protruding into the opening; In a terminal structure of a connector having a connection terminal having an end protruding to the rear side of the wall portion and a printed wiring board formed with a circuit pattern to which the other end of the connection terminal is connected, the other end of the connection terminal is On the back side of the wall portion, branching is performed in the opposite direction while maintaining a predetermined horizontal interval, and the bent position of the connection terminal is shifted by a predetermined vertical interval by shifting the adjacent circuit pattern in the connection direction by a predetermined interval L. A terminal structure for a connector, characterized in that: 2. The connection terminal according to claim 1, wherein the connection terminal is a connection terminal member having the same shape with a bent portion formed in the middle thereof, wherein one of the connection terminals is inverted so that the bent portions are in opposite directions to each other, and the connection terminal has a planar shape. The terminal structure of a connector according to claim 1, wherein the connector is fixed so as to overlap with the connector, and is bent at predetermined positions different from each other by the vertical interval toward the printed wiring board.