JPH1022005A - Card edge type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it easy to insert and draw out a printed wiring board. SOLUTION: Each pair of contacts 1 is curved so that their upper ends approach each other, and a main gap for inserting a printed wiring board 8 and an auxiliary gap are formed in such a way as to be vertically aligned. An insulative rectangular rod-shaped working tool 2 is provided across the opposite lines of contacts 1 in such a way as to be capable of back-andforth parallel movement along the longitudinal direction of the contacts 1. This back- and-forth parallel movement allows the tool 2 to be fitted between the auxiliary gaps in the pairs of contacts 1 or released to widen or narrow the main gaps, Control levers 3 that rotate about shafts 4 are placed to correspond to the right and left ends of the working tool 2 and are turned by the short sides of an L shape to cause the ends of the long sides of the L shape to abut to the lower surface of the end of the working tool 2. Prior to insertion and during extraction, the working tool 2 is put into upward parallel movement via the control levers 3 and fitted into the auxiliary gaps in the contacts 1 to widen the main gaps so that resisting forces during insertion and extraction are set to zero.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector to which a printed wiring board is inserted and connected at an edge thereof.
In particular, the present invention relates to a card edge type connector improved so that a printed wiring board can be easily inserted and pulled out (detachable).

[0002]

2. Description of the Related Art A conventional example will be described with reference to FIGS. 7 is a common front view before or after the printed wiring board is inserted into or pulled out from the conventional example, and FIG. 8 is a side sectional view (AA section) of FIG. In these drawings, a pair of strip-shaped contacts 11 arranged facing each other are arranged side by side in a direction perpendicular to the longitudinal direction and the facing direction. The pair of contacts 11 are fixedly penetrated through a base 12 formed of plastic, and a part of each upper end is curved so as to approach each other to form a gap 14. Contact 1
In each pair, the upper end including the gap 14 is located in the groove 13 formed on the upper side of the base 12 in the drawing. As shown in FIG. 8, rib-shaped protrusions 15 for isolating each pair of adjacent contacts 11 are formed on inner surfaces of both sides of the base 12 in the grooves 13.
Are integrally formed. In each pair of the contacts 11, the lower edge (the conductor pattern of the connection portion) of the printed wiring board 8 is inserted and connected to the gap 14 at the upper end thereof, and at the same time, the lower end protrudes below the base 12 to be connected to the external terminal. Become. The conventional example is a connector of a type corresponding to an extended printed wiring board for an AT compatible machine of IBM Corporation. The right side in FIG. 7 corresponds to a standard part and the left side corresponds to an extended part. Left and right are divided.

[0003]

In the prior art described above, the printed wiring board 8 is moved in the direction of the thick arrow in FIG.
(See FIG. 8) and connected. Generally, since the number of each pair of the contacts 11 is large, a strong force is required to insert and pull out (detach) the printed wiring board 8. For this reason, there is a risk that the printed wiring board 8 and the contacts 11 may be damaged due to difficult insertion / extraction with excessive force. In addition, there is a disadvantage in that the insertion and extraction are careful and time-consuming.

An object of the present invention is to provide a card edge type connector which solves the above problems of the prior art, and which is improved so that a printed wiring board can be easily inserted and pulled out. It is in.

[0005]

SUMMARY OF THE INVENTION According to the present invention, in a connector to which a printed wiring board is inserted and connected at an edge thereof, a pair of strip-shaped contacts arranged so as to face each other is formed in a longitudinal direction. Side by side in a direction perpendicular to the facing direction,
Each of the contact pairs has an end on the printed wiring board side located in a groove formed in the insulating connector base, and has a main part for insertion of a printed wiring board curved so that its ends are close to each other. A contact group in which a gap and a similarly formed sub-gap are arranged in order from the end in the longitudinal direction of the contact and the opposite end protrudes from the connector base; and between the two contact rows facing each other. The contact is provided so as to be capable of reciprocating parallel movement in the longitudinal direction of the contact across the contact.
Alternatively, an operating tool of an insulating rod body that separates from the main body and widens or narrows the main gap; and an operating tool for moving the operating tool in parallel are provided.

The operating tool according to the present invention is an L-shaped lever corresponding to each end on both sides of the working tool, and is rotatable around an axis passing through the L-shaped bent portion and perpendicular to the surface thereof. It is preferable that the connector is supported by a connector base, the short side of the L-shape is rotated, and the long side of the L-shape corresponds to the end of the working tool. Therefore, according to the present invention, before inserting the printed wiring board into the card edge type connector, the operating tool is translated in one direction via the operating tool, and this is fitted into the sub-gap of all contact pairs to widen the main gap. . The widened main gap allows the printed wiring board to be inserted without resistance. Next, by inserting the printed wiring board, while pushing the working tool back to the original position, it is separated from the sub-gap of all the contact pairs, the sub-gap and the main gap are narrowed to the original state, and the printed wiring board is narrowed. Pass the gap and sub-gap, and finally pinch (connect) the printed wiring board between all contact pairs in the main gap and sub-gap
Let it. The resistance force received from the contact pairs when the printed wiring board passes through the main gap and the sub-gap is a kinetic friction force (sliding force). Smaller than. Also, when pulling out the printed wiring board from the connector, the operating tool is moved in one direction via the operating tool and pushed in the direction in which the printed wiring board is pulled out, and the operating tool is inserted into the sub clearances of all contact pairs. The gap is widened and the pull-out resistance to the printed wiring board is reduced to zero.

According to the present invention, the L-shaped lever, which is an operating tool, is rotated through its long side to push the working tool through a short side thereof with a large force based on the principle of leverage, thereby allowing one-way operation. Can be translated.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a common front view before or after the printed wiring board is inserted into the embodiment, and FIG. 2 is a side sectional view (AA section) of FIG.
The configuration of the embodiment will be described based on these drawings. The connector of this embodiment is of a type corresponding to an extended printed wiring board 8 for an AT compatible machine of IBM, as described in the conventional example.

In FIGS. 1 and 2, the contacts 1 are in the form of strips, and are disposed so that a pair of them face each other, and are arranged side by side in a direction perpendicular to the longitudinal direction and the facing direction. It is inserted and molded into the molded base 7 of the connector. Each pair of contacts 1 has a base 7
Are formed inside the groove 7a formed in the main gap 5 and the sub-gap 6 so that the ends thereof are curved so as to approach each other at two places.
And the lower end protrudes downward from the base 7 to become an external terminal. As shown in FIG. 2, adjacent contacts 1 are formed on inner surfaces of both sides of the base 7 in the groove 7a.
Are integrally formed with a rib-shaped protrusion 7b for isolating each pair of the above. A lower edge portion (a conductor pattern of a connection portion) of the printed wiring board 8 is inserted and connected to the main gap 5 in a direction of a thick arrow (see FIG. 1). It is used to widen the main gap 5 accordingly.

A square rod-shaped working tool 2 made of an insulating material is
As shown in FIG. 1 with hatching and emphasis,
It is provided so as to be capable of reciprocating parallel movement in the longitudinal direction of the contact 1 across the row of the two contacts 1 facing each other. The action tool 2 is provided in a groove-shaped space formed by facing each pair of the protruding portions 7b as shown in FIG. 2, and protrudes from the bottom surface of the groove 7a and the middle portion in the vertical direction at both ends as shown in FIG. And the lower surface of the intermediate partition partitioning the standard portion on the right side and the extended portion on the left side, can be vertically moved in parallel, and the parallel movement allows the contact 1 to be fitted into the sub-gap 6 of each pair of contacts 1 or , From which the main gap 5 can be widened or narrowed. As shown in FIG. 1, an L-shaped operating lever 3 is provided with a shaft 4 that penetrates a base 7 at right angles to the plane of the drawing.
Is provided so as to be rotatable around. This operation lever 3 is
The operating tool 2 is disposed corresponding to each of the left and right ends of the operating tool 2, and is rotated at the short side of the L-shape. Can be translated.

The operation of the embodiment will be described with reference to FIGS.
This will be described below with reference to FIG. 2 and new FIGS. 3 is a common front view during insertion or removal of the printed wiring board into the embodiment, FIG. 4 is a side sectional view (AA section) of FIG. 3, and FIG. FIG. 6 is a side sectional view (AA section) of FIG.

The insertion operation of the printed wiring board 8 is divided into three stages, ie, before insertion, during the insertion, and at the end point, and refer to FIGS. 1 and 2, FIGS. 3 and 4, and FIGS. 5 and 6, respectively. The explanation is as follows. (1) In FIGS. 1 and 2, each of the left and right operation levers 3 is rotated counterclockwise and clockwise around the axis 4 to move the working tool 2 upward in parallel, as shown in the figure. Position. By doing so, the working tool 2 can be fitted into the pair of sub-gap 6 facing the contact 1, and the main gap 5 can be widened. Therefore, when the printed wiring board 8 is moved (inserted) in the direction of the thick arrow, it can be inserted into the main gap 5 without resistance.

(2) In FIGS. 3 and 4, the printed wiring board 8 is inserted into the middle position in the direction of the bold arrow to pass through the widened main gap 5 without resistance, and the lower surface of the printed wiring board 8 is actuated. 2 can be brought into contact with the upper surface. (3) In FIGS. 5 and 6, by further inserting the printed wiring board 8 in the direction of the thin line arrow, the working tool 2 is translated and pushed back to the original lower position. And the main gap 5 is simultaneously narrowed.
The printed wiring board 8 is passed through the narrowed main gap 5 and sub-gap 6 and finally sandwiched (connected) by the pair of contacts 1 at these two places, and the connection is completed. In addition,
When the printed wiring board 8 passes through the main gap 5 and the sub gap 6, the resistance force received from the pair of contacts 1 is a kinetic friction force (sliding force).
(See Reference)). Following the movement of the action tool 2, each of the left and right operation levers 3
, Respectively, in the clockwise and counterclockwise directions as indicated by the thin arrows, and returns to the position where the short side becomes horizontal.

The drawing operation of the printed wiring board 8 is divided into three stages, ie, the starting point, the middle thereof, and the drawing, and FIGS. 5 and 6, FIGS. 3 and 4, and FIGS. 1 and 2, respectively. The explanation is as follows. (1) In FIGS. 5 and 6, the left and right operation levers 3 are started to rotate counterclockwise and clockwise in the direction of the bold arrow, respectively, and the action tool 2 is started to translate upward as shown by the bold arrow. Then, pushing up of the printed wiring board 8 in the pull-out direction is started.

(2) In FIGS. 3 and 4, the rotation of the operation lever 3 causes the working tool 2 to move upward in parallel as indicated by the thin line arrow to push up the printed wiring board 8 and
The main gap 5 is expanded by being fitted into the pair of sub-gaps 6 of the contact 1. (3) In FIGS. 1 and 2, following the previous stage, the printed wiring board 8 is manually pulled out in the direction of the thin arrow. Moreover, at this time, since the main gap 5 is widened, the resistance of the printed wiring board 8 from the pair of contacts 1 when the printed wiring board 8 is pulled out is zero.

[0016]

According to the present invention, the printed wiring board can be easily inserted and pulled out, and the printed wiring board can be quickly attached and detached without fear of breakage. Since the contact pair is sandwiched between the main gap and the sub gap, there is an excellent effect that the connection becomes more reliable.

The cause is as follows. Before insertion, translate the working tool in one direction via the operating tool,
The main gap is to be widened by being fitted into the sub gaps of all contact pairs. By further inserting the printed wiring board, the working tool is pushed back to the original position, and is separated from the sub-gap of all contact pairs, the sub-gap and the main gap are narrowed to the original state, and the printed wiring board is re-positioned at the two places. Hold and connect. Next, when pulling out, the operating tool is moved in one direction in parallel via the operating tool, the printed wiring board is pushed in the pulling-out direction, and the operating tool is inserted into the sub-gap of all contact pairs to widen the main gap. is there.

[Brief description of the drawings]

FIG. 1 is a common front view before or after a printed wiring board is inserted into an embodiment according to the present invention.

FIG. 2 is a side sectional view of FIG. 1 (AA section);

FIG. 3 is a common front view of a printed wiring board in the process of being inserted into or pulled out of the embodiment.

FIG. 4 is a side sectional view of FIG. 3 (AA section);

FIG. 5 is a common front view at the end of insertion of a printed wiring board into the embodiment or at the start of extraction.

FIG. 6 is a side sectional view of FIG. 5 (AA section);

FIG. 7 is a common front view before or after a printed wiring board is inserted into a conventional example.

FIG. 8 is a side sectional view of FIG. 7 (AA section);

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Contact 2 Working tool 3 Operation lever 4 Axis 5 Main clearance 6 Sub clearance 7 Base 7a Groove 7b Projection 8 Printed wiring board

Claims (2)

[Claims] In a connector to which a printed wiring board is inserted and connected at an edge thereof, a pair of strip-shaped contacts arranged so as to face each other is formed in a direction perpendicular to the longitudinal direction and the facing direction. The printed wiring boards are arranged side by side, and each of the contact pairs has an end on the printed wiring board side located in a groove formed in the insulated connector base, and is curved so that the ends are close to each other. A contact group in which a main gap for insertion and a sub-gap similarly curved are arranged in order from the end in the longitudinal direction of the contact, and a contact group in which the opposite end protrudes from the connector base; It is provided so as to be capable of reciprocating parallel movement in the longitudinal direction of the contact across the row of contacts. The reciprocating parallel movement causes the contact to be inserted into or separated from the sub-gap of all contact pairs, and the main gap is accordingly widened. An operation member for causing the effectors translated; comprises a card edge type connector, wherein the or narrowing and effectors of the insulating rod. 2. The connector according to claim 1, wherein the operating tool is an L-shaped lever corresponding to each end on both sides of the working tool, and an axis line passing through the L-shaped bent portion and perpendicular to the plane. Wherein the short side of the L-shape is rotated and the long side of the L-shape corresponds to the end of the working tool. .