JP2598692Y2 - Electrical connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connector, and more particularly to a connection circuit board having a connection circuit portion formed at a leading edge in a direction of insertion into a connector for connection with another circuit board. Electrical connector for use.

[0002]

2. Description of the Related Art When it is desired to connect two circuits of two circuit boards to each other, an electric connector is attached to one of the circuit boards and one end of the contact terminal protruding is connected to a connection circuit of the circuit board. It is possible to insert the leading edge of the other circuit board (connecting circuit board) into the connecting groove facing the other end of the terminal and connect the connecting circuit formed on the leading edge to the other end of the contact terminal. Widely used. As such an electrical connector, one disclosed in Japanese Utility Model Publication No. 57-17755 is known.

The electric connector has a pair of eject levers at both ends in a longitudinal direction of a connection groove formed in a housing, and a connection circuit portion is securely fitted and connected to a contact terminal in the connection groove. The connection circuit board is released from this connection state by using the eject lever, easily removed, and can be replaced with another connection circuit board.

The eject lever is rotatably supported at an intermediate portion thereof by a shaft supporting portion such as a pin provided in the housing. The eject lever is connected to the side edge of the connection circuit board (at a right angle to the tip edge) from the housing. When the operating lever formed at one end protruding along the (adjacent side) is rotated in a direction away from the connection circuit board, the operating lever is inserted into the housing on the side opposite to the operating lever with respect to the shaft support. The abutting portion formed at the other end abuts on the end surface of the leading edge of the connection circuit board to apply a pushing force to release the fitting.

[0005]

In the case where the connection circuit board is fitted using the pair of eject levers, the connection portion and the operation lever portion are located on opposite sides of the shaft support portion. The operation levers of the pair of eject levers protruding from the housing along the side edge of the circuit board are rotated in a direction away from the side edge of the connection circuit board.
That is, the pair of operation levers are operated to rotate in a direction away from each other. Therefore, this operation requires the operation of one operation lever unit with one hand and the operation lever unit of the other with the other hand, which is troublesome.

In addition, since the two-handed operation causes a difference in the acting force between the two operation levers, the connection circuit board may be inclined. Although this inclination is slight, it also causes a problem that the connection circuit board cannot be taken out smoothly.

[0007] Even if the above operation is performed with one hand, in the fitted state, the operation lever portion is close to the side edge of the connection circuit board, and the interval is not enough to insert a finger. Therefore, it is necessary to pinch the operating lever from the side, and for that purpose, it is not possible to operate both operating levers at once with one hand.

An object of the present invention is to solve the problems of the conventional electric connector and to provide an electric connector having an eject lever which can be operated with one hand.

[0009]

According to the present invention, it is an object of the present invention to provide a connection groove for connecting a connection circuit board having a connection circuit portion at a leading edge at the leading edge. A plurality of contact terminals connected to the connection circuit portion of the connection circuit board are implanted on the other side of the housing so as to face the connection groove, and near both ends in the longitudinal direction of the connection groove A contact portion which is provided so as to be opposed to a position spaced apart from each other in the longitudinal direction and is rotatably supported by a shaft support portion, and which comes into contact with the end surface of the leading edge of the connection circuit board during rotation. In the electrical connector provided with an eject lever having a portion, the eject lever has a bent portion formed at an intermediate portion toward a corner portion of the connection circuit board, and is located inside the bent portion along the leading edge of the connection circuit board. Sideways An inner arm extending outwardly and an outer arm standing upright along the side edge of the connection circuit board outside the bent portion, and the eject lever is provided on the housing at an end of the inner arm. The inner arm portion is rotatably supported around the supporting portion, the inner arm portion has an abutting portion provided on an edge of the inner arm portion facing the leading edge of the connection circuit board, and has an operation lever portion at an end of the outer arm portion. The contact portion is achieved by being located closer to the pivot portion than the center position of the longitudinal distance between the operation lever portion and the pivot portion.

[0010]

In the ejector lever of the electric connector according to the present invention having such a configuration, the contact portion of the eject lever and the operation lever portion are provided on the same side as the fulcrum with the pivot provided on the housing as a fulcrum. When the connection circuit board is inserted into the connection groove at the leading edge thereof, the end surface of the leading edge of the connection circuit board presses the contact portion, so that the operating lever also rotates in this pressing direction. Move. That is, the operation lever portion comes to a position separated from the side edge of the connection circuit board. At this time, since the eject lever is bent at the intermediate portion as described above, the operation lever portion is at a position inclined away from the side edge of the connection circuit board.

Therefore, when the connection circuit board is pulled out, the operation lever of the left eject lever is brought close to one hand, that is, the thumb of the right hand, and the operation lever of the right eject lever is brought close to the index finger or the middle finger. Direction to rotate around the pivot, which is the fulcrum. As a result, the contact portion on the same side as the operation lever portion with respect to the fulcrum also moves in the same direction as the above pressing direction to press the end surface of the leading edge of the connection circuit board, and the connection circuit board is fitted with the contact terminal. Cancel from the combination.

[0012]

1 and 2 are partially cutaway perspective views showing an electric connector according to an embodiment of the present invention. In FIG. 1, the eject lever is at the position when the connection circuit board is inserted, and in FIG. It is shown as the release position. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG.
It is an expanded sectional view.

In FIG. 1, reference numeral 1 denotes an electric connector of the present embodiment, which has a housing 2 in which a plurality of contact terminals are implanted and an eject lever 3 attached to the housing 2. The housing 2 has a rectangular shape in plan view and is provided with guide portions 4 standing upright at both ends in the longitudinal direction. Guide grooves 5 for inserting and guiding both side edges P1 of the connection circuit board P are formed to extend downward on inner surfaces of the two guide portions 4 opposed to each other. The housing 1 is connected to the guide grooves 5 of the two guide portions 4 so that
Top edge (lower edge in the figure) P of the connection circuit board P
2 is formed with a connection groove 6. On both sides of the connection groove 6, a plurality of contact terminal insertion holes 7 are formed penetrating vertically at equal pitch in the longitudinal direction of the housing 2, and each contact terminal insertion hole 7 can be seen in FIG. And an intermediate portion thereof communicates with the connection groove 6. Contact terminal 8
Are supported at the upper and lower portions of the contact terminal insertion hole 7,
It protrudes below the housing to form a connection portion 8A.
Further, the contact terminal 8 has a connection portion 8B which is bent so as to protrude into the connection groove 6 at an intermediate portion thereof.

Below the guides 4 formed at both ends of the connection groove 6 of the housing 2, as shown in FIG.
A cavity 9 opening downward is formed, and the cavity 9 opens upward at a portion outside the guide portion 4. The eject lever 3 is housed in the space 9. The eject lever 3 has an inner arm portion and an outer arm portion with a bent portion 3A formed in an intermediate portion as a boundary so as to form a substantially L-shape. As shown in the figure, the inner arm portion is the leading edge P2 of the connection circuit board P.
, And the outer arm portion stands upright along the side edge P1 of the connection circuit board P. An end of the inner arm portion is rotatably supported by a pin 10 serving as a shaft support provided in the housing 2 at a position inside the housing 2 in the longitudinal direction of the housing 2 in the space 9. The inner arm portion of the eject lever 3 has a contact portion 3B protruding upward toward the connection groove 6 between the pin 10 and the bent portion 3A, and is provided outside the bent portion 3A. The distal end of the outer arm extending upward from the housing forms an operation lever 3C.
The contact portion 3B is inserted into the connection groove 6 in the longitudinal direction of the housing 2 , that is, is inserted into the connection groove 6.
In the longitudinal direction within the range of the connection circuit board P of the leading edge P2
Is located closer to the pin 10 than the center of the eject lever 3.

The mounting holes 11 formed at both ends of the housing 2 are for mounting the electrical connector 1 on a predetermined circuit board.

The electric connector of the present embodiment is used in the following manner.

The electric connector 1 is mounted on a predetermined circuit board (not shown) through the mounting hole 11, and the connection portion of the contact terminal 8 is connected to the circuit portion of the circuit board by soldering or the like.

Next, a connection circuit board P to be connected to the electric connector 1 is prepared, and a leading edge P 2 having a connection circuit portion is inserted into the connection groove 6 of the electric connector 1. Then, the connection circuit board P inserted between the connection portions 8B of the contact terminals 8 on both sides shown in FIG. 4 is sandwiched by the connection portions 8B from both sides in the connection circuit portion, and the lower side surface thereof It is supported by the bottom surface of the connection groove 6.
Thus, the circuits of the predetermined circuit board on which the electrical connector 1 is mounted and the predetermined connection circuit board P are connected.

When the connection circuit board P is inserted, the contact portion 3B of the eject lever 3 is pressed by the lower end surface of the connection circuit board P, so that the eject lever 3 is moved around the pin and the operation lever section 3C is moved. As shown by a solid line in FIG. 3, the connection circuit board P rotates in a direction away from the side edge.

Next, when the connection circuit board P is pulled out, the engagement between the connection circuit board P and the connection portion 8 B of the contact terminal 8 is released by the eject lever 3.

That is, the operation lever 3C of the eject lever 3 is rotated to the position indicated by the two-dot chain line in FIG. 3 so as to rise toward the side edge of the connection circuit board P. This can be performed simultaneously for both eject levers 3 with one hand. Then, the contact part 3B also rotates in the same direction. As a result, the contact portion 3B is displaced upward, and the connection circuit board P is lifted to release the engagement of the contact terminal 8 with the connection portion 8B.

In the electric connector of the present embodiment,
Since the operation is performed with one hand, the forces acting on both eject levers are mechanically the same, and the connection circuit board rises uniformly without tilting. Further, as is clear from FIG. 5, the contact portion as an action point that contacts the connection circuit board is on the same side as the operating lever portion that is a point of emphasis on the pin that is the fulcrum.
Since it is located between the fulcrum and the point of force, the amount of displacement is smaller than the amount of displacement of the operation lever portion, but the force at the point of action increases in inverse proportion thereto. A small amount of displacement is sufficient for the release, and a large force at the point of action is desired.

[0023]

According to the present invention, the contact portion for releasing the connection with the contact terminal of the connection circuit board is located between a pin serving as a fulcrum and an operation lever portion serving as a power point, and the operation lever portion is connected to the connection circuit board. The above-mentioned release is performed by moving the contact portion contacting the end surface of the leading edge of the connection circuit board upward by rotating toward the side edge of the connection circuit board. It can be operated at the same time, making the work extremely easy.In addition, since it is operated with one hand, the same force acts on both eject levers and lifts the connection circuit board uniformly without tilting, so that stable release is achieved.
Since a large releasing force can be obtained, an effect that a reliable releasing can be expected can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an electric connector according to an embodiment of the present invention, in which an eject lever is at a position when a connection circuit board is inserted.

FIG. 2 is a partially cutaway perspective view showing the electrical connector of FIG. 1;
FIG. 7 is a view showing a state where an eject lever is in a release position.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a view showing an operation of an eject lever of the electric connector of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric connector 2 Housing 3 Eject lever 3A Bending part 3B Contact part 3C Operation lever part 8 Contact terminal 10 Shaft supporting part (pin)

Claims (2)

(57) [Scope of request for utility model registration] A connection groove for connecting a connection circuit board having a connection circuit portion at a front end edge at the front end edge is formed by opening on one side of a housing. A plurality of contact terminals to be connected are implanted on the other side of the housing so as to face the connection groove, and are located near both ends in the longitudinal direction of the connection groove and at positions separated from each other in the longitudinal direction. An electrical connector comprising: an eject lever having a contact portion provided so as to face each other and rotatably supported by a shaft support portion and abutting on the end surface of the distal end edge of the connection circuit board during rotation. A bent portion is formed at an intermediate portion toward a corner portion of the connection circuit board, and an inner arm portion which is inside the bent portion and extends laterally along a leading edge of the connection circuit board, and the bent portion. Outside An outer arm portion standing upright along a side edge of the connection circuit board, wherein the eject lever is rotatably supported around a shaft support provided on the housing at an end of the inner arm portion, The contact portion is provided on an edge of the portion facing the leading edge of the connection circuit board, and has an operation lever portion at an end of the outer arm portion, and the contact portion is between the operation lever portion and the shaft support portion. An electrical connector, wherein the electrical connector is located closer to the pivot shaft support side than the center position of the longitudinal distance. 2. The electrical connector according to claim 1, wherein the contact portion is formed so as to protrude toward an end surface of a leading edge of the connection circuit board.