JPH0837066A - Card edge connector - Google Patents

Abstract

PURPOSE:To provide a card edge connector capable of making a connection with small force and preventing the reduction of workability and the deformation of a conducting terminal. CONSTITUTION:A rotary shaft 33 and a bearing hole 34 formed on individual flat plates 32 of individual housings 31 are assembled to form a hinge mechanism constituted of a protruded member and a recessed member, and contact sections 41a of terminal metals 41 rotatably held by the hinge mechanism serving as a fulcrum are moved nearby or apart. An integrated inner housing 30 is stored in a box-type outer housing 20, and they can be rotated in it. A spring member 42 excites the housings 31 in the direction to separate the contact sections 41a from a terminal 51a. The end section 51 of a printed board is brought into light contact with the contact sections 41a when the end section 51 of the printed board starts to be inserted into the outer housing 20, and a guide cam 55 formed on a hood 52 surrounding the end section 51 rotates the housings 31 to the side of the end section 51 when the end section 51 is thrust to the deep portion and strongly presses the contact sections 41a and a terminal 51a to connect them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting portion in which a plurality of strip-shaped terminals are formed on both sides of an edge of a printed circuit board, while holding a plurality of terminal fittings, and a part of a tongue piece of each terminal fitting. The present invention relates to a card edge connector that is pressed against each terminal to be electrically connected.

[0002]

2. Description of the Related Art A card edge connector is connected by sandwiching a connecting portion formed on an edge portion of a printed circuit board. Here, the connection portion of the printed circuit board is such that only a plurality of terminals, each of which has a part of the printed line formed in a strip shape at the edge portion of the printed circuit board, are arranged in parallel on both sides of the edge portion. Conventionally, as this type of card edge connector,
The ones shown in FIGS. 8 and 9 are known.

In the figure, terminals (not shown) are formed on both sides of the end portion 1 of the printed circuit board, and the box-shaped housing 3 of the card edge connector 2 is provided with a slit-shaped insertion opening into which the end portion 1 can be inserted. 4 are formed. The housing 3 holds the terminal fittings 5 and 5 so as to sandwich a narrow space communicating from the insertion port 4 to the inner side,
Each of the terminal fittings 5 and 5 is provided with a flexible tongue-shaped contact portion 6 that projects toward this space. In such a configuration, the card edge connector 2 is connected to the end portion 1 of the printed circuit board.
In order to connect to the same, the same end portion 1 is applied to the insertion opening 4 of the housing 3, and the same end portion 1 is directly inserted until it is shown in FIG.
Push it in. At this time, the end portion 1 pushes the tongue-shaped contact portions 6 protruding from both sides with respect to the space behind the insertion opening 4 and opens toward the back.

[0004]

In the above-mentioned conventional card edge connector, when the end portion 1 is inserted, the contact portion 6 obliquely abuts on the abutting portion 6 so as to be slid and bent. , There is a large resistance when pushing it diagonally, and it may not slide well depending on the insertion method,
There is a problem that the contact portion 6 may be deformed. Further, there is a problem that workability is not good because resistance is large. The present invention has been made in view of the above problems, and it is possible to perform connection with a plate material such as a printed circuit board with a small force, and it is possible to prevent deterioration of workability and deformation of conductive terminals. The purpose is to provide a card edge connector.

[0005]

In order to achieve the above object, the invention according to claim 1 holds a plurality of conductive terminals and exposes a contact portion of the conductive terminals at a predetermined position on the surface of the plate edge. In a card edge connector for abutting and connecting to a terminal formed by the above, a pair of box-shaped housings for holding and holding the abutting portion of the conductive terminal in a fixed direction, the protruding directions facing each other. And an inner housing provided with a hinge mechanism for rotatably holding the abutting portions so that the abutting portions can approach and separate from each other, and an insertion opening through which the plate edge portion can be inserted is formed on one surface, and the insertion opening is formed. An opening into which the inner housing can be inserted is formed on a surface opposite to the surface on which the inner housing is inserted, and an outer housing that rotatably accommodates the pair of inner housings and an inner housing. The contact portion of the conductive terminal in the housing comes into close contact with the terminal when the plate edge portion is inserted into the outer housing, and separates when the plate edge portion is pulled out from the outer housing. As described above, the rotation mechanism for rotating the inner housing is provided.

The invention according to claim 2 is the same as claim 1.
In the card edge connector according to, the hinge mechanism is projected from a side surface of one of the inner housings toward a side surface of the other housing,
Further, a convex member having a rotary shaft protruding in the direction of the rotary shaft, and a concave member protruding from the side surface of the other housing toward the side surface of the one housing and having a concave portion through which the rotary shaft can penetrate are formed. It is prepared for this purpose. Furthermore, the invention according to claim 3 is the card edge connector according to claim 2, wherein the hinge mechanism is provided with a convex member and a concave member in one of the housings.

[0007]

In the invention according to claim 1 configured as described above, the pair of box-shaped housings hold the abutting portions of the conductive terminals by projecting them in a fixed direction, and the hinge mechanism faces the same projecting direction. The inner housing thus assembled is rotatably held so that the abutting portions thereof can approach and separate from each other, and the inner housing assembled in this manner is accommodated inside from the opening of the outer housing in such a rotatable state. Has been done. On the other hand, the outer housing is formed with an insertion opening into which the plate material edge portion can be inserted on the surface opposite to the opening, and when the plate material edge portion is inserted from the insertion opening, the rotation mechanism rotates the inner housing. The contact part of the conductive terminal in the inner housing is brought into close contact with the terminal of the edge part of the plate material, and conversely, when the edge part of the plate material is pulled out, the inner housing is rotated in the opposite direction so that the contact part of the conductive terminal becomes Away from the terminal of the part.

Further, in the invention according to claim 2 configured as described above, while protruding from the side surface of the housing forming the inner housing toward the side surface of the pair of housings, the rotation shaft is further arranged in the rotation axis direction. The protruding convex member is provided, and the side surface of the pair of housings is provided with a concave member protruding toward the side surface of the housing having the convex member and having a concave portion through which the rotary shaft can penetrate. Since the rotary shaft of the convex member is inserted through the concave portion of the chasing member in advance to assemble them, the both are rotatably integrated, and the integrated inner housing is housed inside from the opening of the outer housing.

Further, in the invention according to claim 3 configured as described above, each housing is provided with a convex member and a concave member, respectively, and if the housings having the same shape are oppositely faced, the respective housings are provided. When the convex member and the concave member face each other and the rotary shaft of one set is brought close to the concave portion, the rotary shaft of the other set is brought close to the concave portion in the same manner, and the assembling is performed at the same time.

[0010]

As described above, according to the present invention, the inner housing rotatably held in the outer housing holds the conductive terminals, and the conductive terminals are connected to the terminals at the edge of the plate material by the rotation of the inner housing. Since they are in contact with each other, the edge of the plate material does not forcefully press the contact part of the conductive terminal, so that damage or deformation can be prevented, and connection can be performed with a small force. it can. Further, since the inner housing can be housed in the outer housing after being integrally assembled outside the outer housing in advance, the workability of assembling is good.

Further, according to the second aspect of the invention, the convex member and the concave member projecting toward the housing on the opposite side can be assembled together and rotatably held, and the assembly is easy. Further, according to the third aspect of the invention, the housings having the same shape are assembled so as to face each other in an opposite manner, and the number of types of parts can be reduced.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a card edge connector according to an embodiment of the present invention. In the figure, the card edge connector 10 is a box-shaped outer housing 20.
An inner housing 30 composed of two flat box-shaped housings 31 is rotatably held therein. The front wall of the outer housing 20 formed in a box shape with an open rear surface has an insertion opening 21 that opens in a slit shape in the horizontal direction, and the central portion of the upper wall is oriented in the front-rear direction and vertically. A lock arm 22 having flexibility in a direction is provided. A lock claw 22a that projects upward is formed at the center of the lock arm 22, and an operation knob 22b is formed at the rear end.

A notch 23 for communicating the inside and outside of the outer housing 20 is formed on the upper wall and the lower wall of the lock arm 22.
A pair is formed so as to be continuous with the front wall at a position sandwiched by. Further, on the outer surface of the outer housing 20, ribs 24 projecting vertically and outwardly from the end portions of the upper wall and the lower wall and the center portion of the side wall are formed in the front-rear direction. Further, a bearing hole 25 that communicates in the side direction is formed in the central portion of both side walls near the opening side, and two notches 26 are formed above and below the bearing hole 25 from the rear side. Inner housing 3
In the case of 0, two housings 31, 31 having the same shape are prepared, and the upper housing 31 is turned upside down and assembled.
In each housing 31, a flat plate 32 is extended upward from a rear end upper piece of one side surface, a rotary shaft 33 is projected outward from the side surface in the horizontal direction, and a rear end of the other side surface is provided. A flat plate 32 extends upward from the upper piece to form a bearing hole 34 through which the rotary shaft 33 can penetrate. Each housing 31 has a width that allows it to be inserted into the outer housing 20 except for the protruding portion of the rotary shaft 33. A flat plate-shaped spring receiver 35 is formed on the front side of the side surface so as to project outward.

The housing 31 itself has a terminal fitting 41.
The terminal accommodating chambers 36 capable of accommodating the terminals are arranged side by side in the lateral direction, and the insertion port 37 of the terminal fitting 41 is opened on the rear side. The terminal fitting 41 is provided with a tongue-shaped contact portion 41a that projects laterally, and a communication port 38 that communicates with the terminal accommodating chamber 36 is opened on the upper surface of the housing 31 to contact the contact portion 41a. Is configured to be able to project from the communication port 38 to the outer surface of the housing 31. The spring member 42 is wound around the central portion 42a and folded back,
b is in a state in which it is folded back and spread in substantially the same direction. In addition, the central portion 42a that is wound once is attached to the rotary shaft 33.
Both ends 42b of the housing 31 when penetrated by
The length is set so as to engage with the spring receiver 35.

An end portion 51 of the printed circuit board projects from the electronic circuit housing 50, and a cylindrical hood 52 is formed so as to surround the end portion 51. The inner peripheral surface of the hood 52 is formed along the outer shape of the outer housing 20, and a groove 53 into which each rib 24 can be inserted.
In addition, the groove-shaped arm insertion portion 54 that can be locked by introducing the lock arm 22 is formed so as to project upward. Further, an introduction cam 55 is formed so as to project on the inner surface side of the hood 52 corresponding to the notches 23 formed on the upper wall and the lower wall of the outer housing 20, and the introduction cam 55 goes toward the inner side. The protruding height is high. It should be noted that on both surfaces of the end portion 51 of the printed circuit board, terminals 51a in which the end portion of the printed line has a strip shape are formed corresponding to the positions where the communication ports 38 of the housing 31 are formed.

Next, the operation of this embodiment having the above configuration will be described. When the card edge connector 10 is assembled, the insertion opening 37 is inserted into the terminal accommodating chamber 36 of the housing 31.
The terminal fitting 41 is inserted through the. At this time, by inserting the contact portion 41a toward the inner peripheral wall of the terminal accommodating chamber 36 in which the communication port 38 is formed, the contact portion 41a projects from the communication port 38 when the terminal fitting 41 is pushed. The terminal fitting 41 may be inserted after the card edge connector 10 is assembled. Next, the housings 31 are turned to the opposite sides and slightly displaced in the lateral direction, and the rotary shaft 33 is inserted from the inside of the bearing hole 34. At this time, both housings 31 have the same shape, and the respective rotary shafts 33 are inserted into the bearing holes 34 only by sliding them laterally. In this way, both housings 31 can rotate with the rotation shaft 33 as the rotation axis, and the contact portions 41a of the terminal fittings 41 projecting from the communication port 38 come close to and separate from each other by the rotation.
Then, the rotary shaft 33 is inserted into the central portion 42a of the spring member 42, and the end portion 42b is hooked on the spring receiver 35 of the housing 31 to urge the both housings 31 to open. FIG. 2 shows the inner housing 30 assembled in this way.

Next, the two housings 31 are attached to the spring member 4
The inner housing 30 is inserted into the outer housing 20 while being closed against 2, and the notch 26 formed in the side surface of the outer housing 20 is used to push open the side wall in which the bearing hole 25 is formed. Is inserted into the bearing hole 25. Then, the front side of each housing 31 is expanded by the spring member 42 with the bearing hole 25 as a fulcrum, and an attempt is made to maintain a space behind the insertion opening 21 formed on the front surface of the outer housing 20. When the card edge connector 10 is assembled in this way, it is inserted into the hood 52 protruding from the electronic circuit housing 50 as shown in FIG. When each rib 24 of the outer housing 20 is aligned with the groove 53 of the hood 52 and is gradually inserted from the front wall side, the introduction cam 55 is inserted into the notch 23 of the outer housing 20, but is projected. Since the height is low, it only acts to align the outer housing 20 and does not approach the inside. On the other hand, the housings 31 of both inner housings 30 are rotated by the action of the spring member 42 so as to be separated from each other with the rotation shaft 33 as a fulcrum, and a space is formed between them. Therefore, even if the end portion 51 of the printed circuit board enters the outer housing 20 through the insertion opening 21 formed in the front wall of the outer housing 20, the end portion 51 is only in light contact with the contact portion 41a.

However, when the guide cam 55 is pushed further in and the portion of the introduction cam 55 having a high protruding height is inserted into the notch 23 as shown in FIG. Contact the slope. Introduction cam 5
5 is formed on the upper and lower inner surfaces of the hood 52, and the protruding height increases toward the back, so that the housing 31
When the front end corner of the housing 31 comes into contact with the inclined surface of the introduction cam 55 and is pushed in, the two housings 31 are forced to approach each other so as to approach each other toward the center. The contact portion 4 of the terminal fitting 41 that protrudes through the communication port 38 as it approaches
1a is a terminal 5 formed on the surface of the end portion 51 of the printed circuit board
It is strongly pressed against 1a. However, housing 3
Since 1 itself presses the terminal fitting 41 against the end portion 51 of the printed circuit board while rotating around the rotation shaft 33 and the bearing hole 25, the terminal fitting 41 is substantially perpendicular to the end portion 51. Can be pressed with. When the contact portion 41a is pressed in this way, the contact portion 41a is naturally pressed down, so that deformation or the like can be avoided.

When the outer housing 20 is inserted all the way into the hood 52, as shown in FIG.
Are substantially parallel to each other, and the contact portion 41a is in a state of being connected to the terminal 51a with the end portion 51 of the printed circuit board being sandwiched in the center. Since the end portion 51 is sandwiched from both sides, it can be positioned in the center. In this way, each housing 31 constitutes a hinge mechanism composed of the convex member and the concave member by assembling the rotary shaft 33 and the bearing hole 34 formed on the flat plate 32 of each other, and is rotatable around the hinge mechanism as a fulcrum. Yes, the contact portions 4 of the terminal fittings 41 held by each
1a approaches and separates. The integrated inner housing 30 is housed in the box-shaped outer housing 20, and the above-described rotation is possible inside. The spring member 42 urges the housing 31 in the direction in which the contact portion 41a moves away from the terminal 51a, and when the end portion 51 of the printed board starts to be inserted into the outer housing 20, the end portion 51a is pressed.
Touches the contact portion 41a lightly, but when it is pushed all the way in, the introduction cam 55 formed in the hood 52 surrounding the end portion 51 causes the housing 31 to rotate toward the end portion 51 side and the contact portion 41a and the terminal. 51a is strongly pressed to connect.

FIG. 6 shows a modification of the housing 31 which constitutes the inner housing 30. As shown in the figure, the bearing hole 34 formed in the flat plate 32 is cut out above the bearing hole 34 to communicate with the outside. The notch 34a is slightly smaller than the rotary shaft 33, and the entire plate including the flat plate 32 is made of a slightly flexible material. In such a configuration, both housings 3
When inserting the rotary shaft 33 of No. 1 into the notch 34a,
Notch 34 without sliding horizontally
Assembly can be completed easily by pushing in from the a direction. As the hinge mechanism, both housings 31 can be connected and bent by a thin piece having flexibility.
Further, as the rotating mechanism, the front end corner portion of the housing 31 is configured to be brought into contact with the introducing cam 55 to rotate, but it may be formed by a cam having another shape or a protruding piece.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a card edge connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of an inner housing.

FIG. 3 is a cross-sectional view showing a connection process of a card edge connector.

FIG. 4 is a cross-sectional view showing a connection process of a card edge connector.

FIG. 5 is a cross-sectional view showing a process of connecting a card edge connector.

FIG. 6 is a perspective view showing a modified example of the housing.

FIG. 7 is a perspective view showing a modified example of the housing.

FIG. 8 is a cross-sectional view showing a connection process of a conventional card edge connector.

FIG. 9 is a cross-sectional view showing a connection process of a conventional card edge connector.

[Explanation of symbols]

 10 ... Card edge connector 20 ... Outer housing 21 ... Insertion port 25 ... Bearing hole 30 ... Inner housing 31 ... Housing 32 ... Flat plate 33 ... Rotating shaft 34 ... Bearing hole 38 ... Communication port 41 ... Terminal fitting 41a ... Contact part 42 ... Spring member 50 ... Electronic circuit housing 51 ... End portion 51a ... Terminal 55 ... Introduction cam

Claims (3)

[Claims] 1. A card edge connector for holding a plurality of conductive terminals, and abutting a contact portion of the conductive terminal to a terminal formed by being exposed at a predetermined position on the surface of an edge of a plate member to connect the card edge connector. A pair of box-shaped housings that hold the contact portions of the conductive terminals by projecting in a certain direction, and rotatably hold each other so that the contact portions can approach and separate from each other And an inner housing having a hinge mechanism that forms an insertion port into which the edge of the plate material can be inserted, and an opening into which the inner housing can be inserted on a surface opposite to the surface on which the insertion port is formed. An outer housing that rotatably accommodates the pair of inner housings therein, and a contact portion of the conductive terminal in the inner housing,
A rotating mechanism that rotates the inner housing so as to come into close contact with the terminal when the plate edge portion is inserted into the outer housing and to separate when the plate edge portion is pulled out from the outer housing. A card edge connector characterized by having and. 2. The card edge connector according to claim 1, wherein the hinge mechanism protrudes from a side surface of one of the inner housings toward a side surface of the other housing, and further has a rotation shaft in a rotation axis direction. And a concave member that protrudes from the side surface of the other housing toward the side surface of the one housing and has a concave member through which the rotary shaft can penetrate. Card edge connector. 3. The card edge connector according to claim 2, wherein the hinge mechanism is provided with a convex member and a concave member on one housing, respectively.