JPH0633658Y2 - Female contact of connector - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a female-side contactor of an electrical connector, and in particular to a pin-shaped connector on the backboard side of a connector for mounting a printed wiring board that electrically enables a staggered connection. Of the female electric contact connected to the male electric contact of the above.

[Conventional technology]

Conventionally, this type of electrical connector is composed of a female connector 9 mounted on a printed wiring board 1 and a male connector 11 mounted on a back wiring board 10, as shown in FIG. . The male connector 11 has a pin-shaped male contactor.
Twelve are arranged in a matrix. The female connector 9 has a hole 16 into which the above-mentioned contact 12 is inserted, and the female contact 13 is arranged in each of the holes 16.

[Problems to be solved by the device]

In the conventional electrical connector, the female contactor 13 shown in FIG. 6 (a) or 6 (b) has been used.

As shown in FIG. 6 (a), in the electrical connector employing the female-side contactor 13 in which the contact spring 110 extends farther from the insertion side of the male-side contactor 12, the male-side contactor 12 is There is a problem that the contact point with the contact spring 110 greatly varies due to the positional accuracy and bending.

FIG. 7 is a cross-sectional view when the male side contact 12 is inserted into the connector using the electric contact shown in FIG. 6 (a).

The contact 13 is fixed in the hole 16 of the housing 103 by fitting a boss 107 provided in a part of the contact 13 and a groove 108 in the hole 16. If the contact 12 is inserted here,
Considering the case along the upper side wall 104 and the case along the lower side wall 105, respectively, the contact 12 and the contact 13 in that case are electrically contacted at points a and b, respectively, and the difference between them is l. Become. For example, when considering staggering several of the contacts 12, it is necessary to consider the difference l. In other words, in order to reliably make a staggered connection, it is necessary to set the amount of positional displacement in the depth direction between the contactor 13 that comes into contact first and the contactor 13 that comes into contact later with the above-mentioned l or more. As a result, there is a problem that it is difficult to downsize the electrical connector.

Further, as shown in FIG. 6B, in the female contactor 13 having the shape in which the contact spring 110 is extended toward the male contactor 12, in order to reduce the contactor 12 insertion force, , Contactor
The insertion angle (contact angle) of 12 into the contact spring 110 cannot be sufficiently secured when the connector is downsized, and a high contact force is required for long-term stabilization of the electrical connection.
There is a problem that the insertion force of the contact 12 is increased and the operability is significantly deteriorated.

[Means for Solving the Problems]

The present invention relates to a female contact of a connector into which a pin-shaped male contact is inserted, the female contact being a terminal portion extending to the outside of the connector,
A contact spring portion for contacting the male contactor, the contact spring portion being L-shaped on one side of the end of the flat metal plate into which the male contactor is inserted. First formed
Relay part, a first contact spring extending from the relay part to the terminal part side, and an L-shape at a position closer to the terminal part than the first relay part on the other side of the metal plate. A second relay portion formed, a second contact spring that extends from the second relay portion in the same direction as the first contact spring and faces the contact spring, and from the second relay portion A third contact spring that extends in the opposite direction to the first contact spring and has a tip bent to contact the male contact at the tip and has a lower stiffness than other contact springs. It is characterized by having.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

Referring to FIGS. 1 (a) and 1 (b), a female contact 20 according to an embodiment of the present invention includes a terminal portion 21 for connecting to the printed wiring board 1 (FIG. 5) and the male side described above. A contact spring portion 22 for contacting the contact 12 is provided.

The contact point spring portion 22 is a flat plate-like connecting portion 23 connected to the terminal portion 21.
And a relay portion 24 provided in an L shape at one end portion of the connecting portion 21 (that is, a side into which the male contact 12 is inserted), and a relay portion 23 extending from the relay portion 23 to the terminal portion 21 side. The long beam contact spring 25 and the connecting portion 21 at a position slightly closer to the terminal portion 21 side than the relay portion 23.
To L-shaped relay portion 26, and a low-stiffness contact spring extended from the relay portion 26 to the relay portion 24 side.
27 and a high-stiffness contact spring 28 extended from the relay portion 26 to the terminal portion 21 side. Low stiffness contact spring 27
For example, by reducing the plate width and the plate thickness, the stiffness is made lower than that of the long beam contact spring 25. The low-stiffness contact spring 27 is crushed to reduce the plate thickness. The high-stiffness contact spring 28 has a shorter plate length to have a higher stiffness than the long-beam contact spring 25.

Since the low-stiffness contact spring 27 can have a large displacement, the distance k from the relay portion 24 can be set small.

FIG. 2 shows a cross section of the female connector 9 that employs the contact 20. The contact spring portion 22 of the female contact 20 is arranged in the hole 16 of the housing 18, and the terminal portion 21 is inserted in the through hole 16 of the printed wiring board 1 on which various electronic components 15 such as an integrated circuit are mounted. There is.

The female contact 20a is a modification of the terminal of the contact 20, and the terminal 21a is flat so that it can be connected to the pad 14 on the printed wiring board 1. twenty two
Have the same configuration.

Next, referring to FIG. 3, the state when the male contact pin 12 is inserted will be described. Low stiffness contact spring 27 is male contact
For auxiliary contact with 12, the long beam contact spring 25 and the high stiffness contact spring 28 are used for main contact with the male contact 12.

When the male contact 12 is inserted into the hole 16, it first contacts the low stiffness contact spring 27. Since the tip of the low-stiffness contact spring 27 contacts the male side contact 12 at a large angle α, the contact point a and the lower wall surface 105 when the male side contact 12 is inserted along the upper wall surface 104. The difference l with the contact point b when it is inserted along can be kept very small. Also,
Since the low-stiffness contact spring 27 has a thin plate, it is easily displaced, so that the contact force with the male contact 12 is small. That is, although the angle α of the tip is large, the insertion force of the male contact 12 is very small, and there is no problem in operability. When the staggered connection is performed in this configuration, since the difference l between the contact points a and b is small, the contact for the staggered connection is caused by the difference in the length of the male contact 12 and the position of the male contact 20. It is sufficient to secure at least 1 as the amount of positional deviation, and it can be made considerably smaller than in the past. As a result, the overall length of the connector can be shortened and miniaturization can be achieved.

FIG. 4 shows a second embodiment of the present invention, in which a tongue piece 29 having a press-fitting projection 30 for securely fixing the female contact 20 in the housing hole 16 is provided.

[Effect of device]

As described above, according to the present invention, the low-stiffness contact spring that greatly contributes to the time difference connection for reducing the connector insertion / extraction force and setting the connection order (eg, ground → power → signal) has a large angle on the male contact insertion side By setting in
The size of the connector can be reduced.

Also, this low-stiffness contact spring extends in the opposite direction from this spring and extends from the same part as the high-stiffness spring that makes the main contact with the male contactor, so there is one relay section for the two contact springs. However, the total length of the female contactor does not increase.

In addition, the long beam contact spring that is provided on the upper side and contributes to the main contact with the male contactor together with the high stiffness contact spring is equivalent to the length of the low stiffness contact spring and the length of the high stiffness contact spring. Since the length can be set, sufficient flexibility can be provided and the insertion / extraction force of the male contact can be kept low. As a result, it can be applied to a multi-terminal connector.

[Brief description of drawings]

1 (a) and 1 (b) are a perspective view and a side view, respectively, of an embodiment of the present invention, FIG. 2 is a partial sectional view of a female connector adopting the same embodiment, and FIG. FIG. 4 is a diagram for explaining the positional relationship between the female contact and the male contact in the figure, FIG. 4 is a perspective view of a second embodiment of the present invention, FIG. 5 is an exploded perspective view of a conventional connector, and FIG. FIG. 7 is a perspective view of a conventional female contactor, and FIG. 7 is a diagram for explaining a positional relationship between a female contactor and a male contactor of a conventional connector. 20 …… female contactor, 21 …… terminal part, 22 …… contact spring part,
23 …… Coupling part, 24 …… Relay part, 25 …… Long beam contact spring, 26
...... Relay part, 27 ...... Low stiffness contact spring, 28 ...... High stiffness contact spring, 12 ...... Male contactor.

Claims (1)

[Scope of utility model registration request] 1. A female contact of a connector into which a pin-shaped male contact is inserted, wherein the female contact has a terminal portion extending to the outside of the connector.
A contact spring portion for contacting the male contactor, the contact spring portion being L-shaped on one side of the end of the flat metal plate into which the male contactor is inserted. First formed
Relay part, a first contact spring extending from the relay part to the terminal part side, and an L-shape at a position closer to the terminal part than the first relay part on the other side of the metal plate. A second relay portion formed, a second contact spring that extends from the second relay portion in the same direction as the first contact spring and faces the contact spring, and from the second relay portion A third contact spring that extends in the opposite direction to the first contact spring and has a tip bent to contact the male contact at the tip and has a lower stiffness than other contact springs. A female contactor of a connector having.