JP2833451B2 - Card edge connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting portion having a plurality of strip-shaped terminals formed on both sides of an edge portion of a printed circuit board, while holding a plurality of terminal fittings and a tongue piece of each terminal fitting. To a card edge connector that presses each of the terminals to an electrical connection.

[0002]

2. Description of the Related Art A card edge connector is connected so as to sandwich a connection portion formed at an edge of a printed circuit board. Here, the connection portion of the printed circuit board is formed by arranging a plurality of terminals each having a portion of a printed line formed in a strip shape at the edge of the printed circuit board on both sides of the edge. Conventionally, as this kind of card edge connector,
The one shown in FIGS. 5 and 6 is known.

In the drawing, terminals (not shown) are formed on both sides of an end 1 of a printed circuit board, and a box-shaped housing 3 of a card edge connector 2 has a slit-shaped insertion opening through which the end 1 can be inserted. 4 are formed. The housing 3 holds the terminal fittings 5 and 5 so as to sandwich an elongated space communicating from the insertion port 4 to the back side.
Each terminal fitting 5, 5 is provided with a flexible tongue-shaped contact portion 6 protruding toward this space. In such a configuration, the card edge connector 2 is connected to the end 1 of the printed board.
In order to connect to the insertion port 4, the same end 1 is applied to the insertion port 4 of the housing 3,
Push it into the inside. At this time, the end portion 1 advances toward the back while pushing and opening the tongue-shaped contact portion 6 protruding from both sides into the space behind the insertion opening 4.

[0004]

In the conventional card edge connector described above, when the end portion 1 is inserted, the end portion 1 acts obliquely against the contact portion 6 so as to bend while sliding. , The resistance when pushing it open diagonally is large, and it may not slide well depending on the way of insertion,
There is a problem that the contact portion 6 may be deformed. In addition, there is a problem that workability is not good because of high resistance. The present invention has been made in view of the above problems, and can perform connection with a plate material such as a printed board with a small force, and can prevent a decrease in workability and a deformation of a conductive terminal. The purpose is to provide a card edge connector.

[0005]

According to the first aspect of the present invention, there is provided a hood-shaped fitting opening for accommodating a plate material edge to be connected. In a card edge connector for connecting a contact portion of a plurality of conductive terminals by contacting a terminal formed by exposing the contact portion to a predetermined position on the surface of the plate material edge, the contact portion of the conductive terminal is oriented in a predetermined direction. An inner housing that holds as a, having an insertion port that allows the insertion of the edge of the plate material,
The inner housing via the holding mechanism so that it can be displaced between a position where the contact portion of the conductive terminal is in contact with the terminal of the plate material edge portion inserted into the insertion port and a position where the contact portion is separated from the terminal. A process in which the outer housing, which is rotatably held, is provided on the outer surface of the inner housing so as to be able to slidably contact a guide portion provided along the inner periphery of the fitting opening, and the fitting into the fitting opening proceeds. A guided portion that rotates the inner housing in a direction in which the contact portion of the conductive terminal comes into contact with the terminal of the plate material edge by sliding contact with the guide portion, and the holding mechanism includes: A pair of rotating shafts formed on the outer surface of the inner housing and the inner surface of the outer housing, a cylindrical bearing into which the rotating shaft is inserted and rotatable, and a cylindrical side on the bearing side. The wall is formed with a notch capable of holding the rotating shaft in the cylinder by pushing the rotating shaft from the side direction, and the opening direction of the notch is in the direction of inserting the inner housing into the outer housing. It is characterized by being made to match.

According to a second aspect of the present invention, in the card edge connector according to the first aspect, a pair of the inner housings are provided for terminals on both sides of the edge of the plate material. Things. Further, the invention according to claim 3 is the card edge connector according to claim 1 or 2, wherein the guide portion is a rib having a hypotenuse provided along a fitting direction in the fitting opening. It is assumed that. Furthermore,
According to a fourth aspect of the present invention, in the card edge connector according to any one of the first to third aspects, the inner housing is normally moved in such a direction that a contact portion of the conductive terminal is separated from a terminal of the plate material edge. It is characterized in that a spring to be rotated is provided.

[0007]

According to the first aspect of the present invention, the inner housing for holding the contact portion of the conductive terminal by projecting it in a predetermined direction is rotatably held in the outer housing by the holding mechanism. By rotating, the contact portion of the held conductive terminal can be brought into contact with and separated from the terminal at the edge of the plate material.
The rotating mechanism rotates the inner housing so that the contact portion of the conductive terminal is brought into close contact with the terminal when the edge of the plate is inserted into the outer housing, while the plate is inserted from within the outer housing. When extracting the edge, the contact part is separated.

[0008] On one surface of the outer housing is formed an insertion opening into which the edge of the plate material can be inserted. On the surface opposite to the surface on which the insertion opening is formed, there is formed an opening through which the inner housing can be inserted. When assembling, the inner housing is inserted through this opening. Here, the holding mechanism includes a pair of rotating shafts formed on the outer surface of the inner housing and the inner surface of the outer housing, and a cylindrical bearing into which the rotating shaft is inserted and rotatable, Also, on the cylindrical side wall on the bearing side,
A notch is formed so as to match the direction in which the inner housing is inserted into the outer housing. Therefore, when the inner housing is inserted into the outer housing, the rotary shaft is pushed toward the opening of the notch, and after the push, the rotary shaft is rotatably held in the cylinder.

Further, in the invention according to claim 2 configured as described above, a pair of inner housings are provided for the terminals on both sides at the edge of the plate material, and the inner housings are connected so as to be sandwiched from both sides. Further, in the invention according to claim 3 configured as described above, since the spring mechanism tries to rotate the inner housing in the direction in which the contact portion of the conductive terminal is separated from the terminal of the plate material edge, the plate material edge Before insertion, the conductive terminals do not come into contact with the edges of the plate. On the other hand, the cam mechanism rotates the inner housing when inserting the plate material edge close to the inner housing and bringing the contact portion of the conductive terminal close to the terminal of the plate material edge to connect them. .

Here, when assembling the spring mechanism, the spring member whose central portion is bent is engaged with the outer side holding member on the inner surface of the outer housing, which is opposed to the holding mechanism. Both ends are kept open in the outer housing, and the inner housing is pushed into the outer housing and locked by the holding mechanism as described above. Since the inner holding member is provided on the outer surface of the inner housing on the side of the holding mechanism on which the outer holding member is provided upright toward the inner surface of the outer housing, a pair of inner members is provided. Each inner holding member in the housing is inserted so as to sandwich both ends of the spring member. Therefore, since the spring member is engaged with the inner holding member and is pushed out, the inner housing tries to rotate in directions opposite to each other, and a space is formed between the two so that the edge of the plate material can be inserted.

[0011]

As described above, according to the present invention, the inner housing rotatably held in the outer housing holds the conductive terminal, and the conductive terminal is connected to the terminal at the edge of the plate by rotating the inner housing. Since the contact is made, the edge of the plate material does not force the contact part of the conductive terminal, and it can be prevented from being damaged or deformed, and the connection can be made with a small force. it can. In addition, since the inner housing can be assembled simply by being inserted into the outer housing, the workability of the assembly is good. According to the second aspect of the present invention, since the plate material edge is sandwiched between the pair of inner housings from both sides, the positional deviation can be corrected.

Further, according to the third aspect of the present invention, the inner housing is normally urged in a direction away from the edge of the plate material so as not to hinder the insertion of the edge of the plate material, and when the edge of the plate material is inserted. Since the plate is driven so as to sandwich the edge, the plate does not come into contact with the inner housing when the edge of the plate is started to be inserted. Further, the spring mechanism can be assembled simply by hooking the bent spring material on the pin of the outer housing and inserting the inner housing, so that the assembling workability is good.

[0013]

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 one embodiment of the present invention.

In FIG. 1, the card edge connector 10
Holds two flat box-shaped inner housings 30 rotatably in a box-shaped outer housing 20. The front wall of the outer housing 20, which is formed in a box shape with an open rear surface, has an insertion opening 21 which is opened in a slit shape in the horizontal direction. Lock arm 22 having direction flexibility
It has. A lock claw 22a projecting upward is formed at the center of the lock arm 22, and an operation knob 22b is formed at the rear end. Notch 2 communicating the inside and outside of outer housing 20 with the upper and lower walls
3 are formed one by one so as to be continuous with the front wall at a position sandwiching the lock arm 22. Also,
On the outer surface of the outer housing 20, ribs 20a projecting upward and downward and outward from the ends of the upper wall and the lower wall and the center of the side wall are formed to be oriented in the front-rear direction. Further, a pair of short columnar outer holding members 24 protruding inward at the center height position are formed on the inner surface of the side wall, and the upper and lower sides are located at positions near the rear opening end, respectively. A pair of short cylindrical rotating shafts 25 are formed.

The inner housing 30 has such a width that it can be inserted into the outer housing 20, and a rotatable cylindrical bearing 31 is formed at the rear side of both sides so that the rotary shaft 25 can be inserted and rotated. It is. Coaxial receiver 3
A cutout 31a slightly smaller than the rotation shaft 25 is formed on the front side of the cylindrical peripheral wall of the first cylindrical wall, and the entirety including the peripheral wall is formed of a slightly flexible material. is there. On the front side of the side surface on which the bearing 31 is formed, a flat plate-shaped spring receiver 32 is formed so as to protrude outward. In addition, the inner housing 30 itself has terminal fittings 41.
The terminal accommodating chambers 33 capable of accommodating the terminal fittings are arranged side by side in the lateral direction, and the insertion opening 34 of the terminal fitting 41 is opened at the rear side. The terminal fitting 41 includes a tongue-shaped contact portion 41a protruding laterally.
0, a communication port 35 communicating with the terminal accommodating chamber 33 is provided.
So that the contact portion 41a can protrude from the communication port 35 to the outer surface of the inner housing 30. The bearing 31 and the spring bearing 32 project from both side surfaces of the inner housing 30 so that
The width of the inner housing 30 is such that it just touches the inner surface of the outer housing 20.

The spring member 42 is folded back at a central portion 42a, and both ends 42b are bent outward. The spring member 42 is oriented forward by hooking the central portion 42 a on the outer side holding member 24 on the inner side surface of the outer housing 20, and both ends 42 b can be locked to the front end of the spring receiver 32 of the inner housing 30. I'm trying. An end 51 of the printed circuit board protrudes from the electronic circuit housing 50, and a cylindrical hood 52 is formed so as to surround the periphery of the end 51. The inner peripheral surface of the hood 52 is formed along the outer shape of the outer housing 20 and has a groove 53 into which each rib 20a can be inserted, and a groove-shaped arm insertion that can be locked by introducing the lock arm 22. The portion 54 is formed so as to protrude upward. Further, an introduction cam 55 is formed so as to protrude from the inner surface of the hood 52 in correspondence with the notches 23 formed on the upper wall and the lower wall of the outer housing 20, and the introduction cam 55 is moved toward the back side. The protrusion height is high. In addition,
On both surfaces of the end portion 51 of the printed circuit board, terminals 51a having a rectangular end portion of the printed line are formed corresponding to the position where the communication port 35 of the inner housing 30 is formed.

Next, the operation of the present embodiment having the above configuration will be described. When assembling the card edge connector 10, the terminal fitting 41 is inserted into the terminal housing chamber 33 of the inner housing 30 through the insertion port 34. At this time, by inserting the contact portion 41a toward the inner peripheral wall where the communication port 35 in the terminal accommodating chamber 33 is formed, when the terminal fitting 41 is pushed in, the contact portion 41a is connected to the communication port 35.
More protruding. The terminal fittings 41 may be inserted after the card edge connector 10 is assembled.
On the other hand, the opening on the rear surface side of the outer housing 20 is directed upward, the end 42 b of the spring member 42 is directed downward, and the central portion 42 is turned upward, and the central portion 42 is formed on the inner surface of the outer housing 20. The outer side holding member 24 is hooked. In this state, both end portions 42b of the spring member 42 are open toward the upper wall and the lower wall on the inner side of the outer housing 20.

As described above, the pair of inner housings 30 containing the terminal fittings 41 are inserted into the outer housing 20 with the sides where the communication ports 35 are opened facing each other. At this time, the spring members 32 of the respective inner housings 30 are inserted so as to sandwich the spring members 42. The notch 31a formed in the bearing 31 of the inner housing 30 is
When the inner housing 30 is pushed into the inner housing 30 by applying force to the rotating shaft 25, the rotating shaft 25 enters the bearing 31 through the notch 31a. Thus, notch 3
Since 1a is formed so as to open in the insertion direction of the inner housing 30, it can be mounted at the same time as the inner housing 30 is housed.

When the inner housing 30 is pushed in, the spring receivers 32 come in contact with the inner surface of the outer housing 20, so that the spring members 42 sandwiched between the spring receivers 32 of the respective inner housings 30 are connected to the spring receivers 32. , So that both inner housings 30 are pushed open. Further, the spring member 42 has an end 42
b at the front end of the spring receiver 32,
At the rear side of the outer side holding member 24, the two rotating shafts 25
Acts as a fulcrum to open the inner housing 30. Thus, the card edge connector 1
When 0 is assembled, it is inserted into the hood 52 projecting from the electronic circuit housing 50 as shown in FIG.
When the ribs 20a of the outer housing 20 are aligned with the grooves 53 of the hood 52 and are gradually inserted from the front wall side, the introduction cam 55 is inserted into the notch 23 of the outer housing 20. Since the height is low, it only acts on the alignment with respect to the outer housing 20 and does not reach the inside inward. On the other hand, both inner housings 30 are rotated so as to be separated from each other with the rotation shaft 24 as a fulcrum by the action of the spring member 42, and a space is formed between the two. For this reason, 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 only slightly touches the contact portion 41a.

However, as shown in FIG. 3, when the portion of the introduction cam 55 having a high protruding height is inserted into the notch 23, the front end corner of the inner housing 30 is inserted into the introduction cam 55. Abut the slope. The introduction cam 55 is formed on the upper and lower inner surfaces of the hood 52,
Since the protruding height becomes higher toward the back, when the front end corner of the inner housing 30 comes into contact with the slope of the introduction cam 55 and is pushed in this way, the two inner housings 30 come close to the center. Inevitably approach. As approaching, the contact part 41a of the terminal fitting 41 protruding through the communication port 35 is strongly pressed against the terminal 51a formed on the surface of the end part 51 of the printed circuit board. However, since the inner housing 30 itself presses the terminal fitting 41 against the end 51 of the printed circuit board while rotating about the rotation shaft 25 and the bearing 31 as a fulcrum, the terminal fitting 41 is substantially perpendicular to the end 51. Pressed at an angle close to. When pressed in this way, the abutment portion 41a is naturally pressed down, so that deformation and the like can be avoided.

When the outer housing 20 is inserted all the way into the hood 52, as shown in FIG. 4, the two inner housings 30 face each other substantially in parallel, and the abutting portion 41a sandwiches the end 51 of the printed circuit board at the center and the terminal 51a. Connected. In addition, since the end part 51 is sandwiched from both sides, it can be positioned at the center. in this way,
The inner surface of the housing outer housing 20 and the conductive terminals 4
A rotating shaft 25 and a cylindrical bearing 31 are formed on the outer surface of the inner housing 30 that houses the housing 1, respectively, and the two are combined and held rotatably. At this time, the notch 31a is formed on the side of the peripheral wall of the bearing 31 in the insertion direction.
Are formed, and when the inner housing 30 is inserted, the notch 31a is pressed against the rotating shaft 25 to assemble them. Further, the spring member 42 is connected to the inner housing 30.
Of the printed circuit board in the direction away from the terminal 51a.
When the insertion is started in the inner portion 0, the same end portion 51 comes into contact with the contact portion 41a.
The guide cam 55 formed on the hood 52 surrounding the end portion 51 when the inner housing 30 is rotated to the end portion 51 side when the contact portion 4
1a and the terminal 51a are pressed firmly to connect.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view showing a connection process of the card edge connector.

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

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

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

FIG. 6 is a sectional view showing a connection process of a conventional card edge connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Card edge connector 20 ... Outer housing 21 ... Insert port 24 ... Outer side holding member 25 ... Rotating shaft 30 ... Inner housing 35 ... Communication port 41 ... Terminal fitting 41a ... Contact part 42 ... Spring member 51 ... End part 51a ... Terminal 55 ... Introduction cam

Claims (4)

(57) [Claims] An abutting portion of a plurality of conductive terminals is exposed at a predetermined position on the surface of the plate material edge by being fitted into a hood-shaped fitting opening accommodating a plate material edge portion to be connected. A card edge connector for contacting and connecting to the formed terminal, an inner housing for holding the contact portion of the conductive terminal in a predetermined direction and holding the same, and an insertion port for allowing the edge of the plate material to be inserted. Having, through a holding mechanism so that it can be displaced between a position where the contact portion of the conductive terminal is in contact with the terminal of the plate material edge portion inserted into the insertion port and a position where the contact portion is separated from the terminal. An outer housing that rotatably holds the inner housing, and an outer housing that is provided on an outer surface of the inner housing so as to be able to slidably contact a guide portion provided along an inner periphery of the fitting port;
A guided portion for rotating the inner housing in a direction in which the contact portion of the conductive terminal comes into contact with the terminal of the plate material edge by slidingly contacting the guide portion in the process of the fitting into the fitting port progressing; And the holding mechanism includes a pair of rotating shafts formed on the outer surface of the inner housing and the inner surface of the outer housing, and a cylindrical bearing into which the rotating shafts can be inserted and rotatable. A notch capable of holding the rotating shaft in the cylinder by pushing the rotating shaft from the side is formed on the cylindrical side wall on the bearing side, and the opening direction of the notch is the outer housing. A card edge connector characterized by being aligned with the insertion direction of the inner housing into the inside. 2. The card edge connector according to claim 1, wherein a pair of said inner housings are provided for terminals on both sides of said plate material edge. 3. The card edge connector according to claim 1, wherein said guide portion is a rib having an oblique side provided along a fitting direction in said fitting opening. connector. 4. The card edge connector according to claim 1, wherein the inner housing is rotated in a direction in which a contact portion of the conductive terminal is separated from a terminal of the plate material edge in a normal state. A card edge connector provided with a spring to be used.