JPH0151032B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connector that maintains high contact pressure and is easy to attach and detach.

Conventionally, connectors used to connect circuit boards have been known to press a contact spring onto a conductor pattern on a circuit board using only the elasticity of the spring itself. Increasing the rigidity of the spring had the disadvantage that a large amount of force was required to attach and detach the connector.

Accordingly, the present invention provides a connector body having a circuit board housed in a housing and having a conductor pattern formed on its surface, and a contact spring having a contact portion formed at the tip end bulging in the direction of the conductor pattern on the circuit board. , a pressure piece having a protruding pressure part that is biased by a coil spring to the connector and is movable in the direction of attachment and detachment of the connector body, when the connector body is inserted and attached to the circuit board. To,
The pressure part of the pressure piece presses the contact part of the contact spring and the conductor pattern of the circuit board so that they come into surface contact in the direction of attachment and detachment of the connector body, thereby solving the above-mentioned drawbacks. The purpose is to provide a connector that solves the problem.

The present invention will be specifically described below based on embodiments shown in the drawings.

FIG. 1 is a side view showing one embodiment of the connector according to the present invention, and FIGS. 2 and 3 are side views showing the operation of the pressure piece.

As shown in FIG. 1, the connector 1 has a housing 2 made of light metal.
A circuit board 3 having a conductive pattern 3a formed on its surface is housed in the housing. A connector holding portion 2a is located at the right end of the housing 2 in the figure, and a connector holding portion 2a holds the board 3.
The holding part 2a is formed in an exposed manner.
A connector main body 5 having a protruding support arm 5a is provided on the inner board 3 so as to be detachable in the directions of arrows A and B. A contact spring 6 made of a conductive material is provided on the main body 5 to face the arm 5a, and at the tip of the spring 6, a contact portion 6a is bulged downward in the figure, that is, in the direction of the circuit board 3. It is formed of. Further, the main body 5 is provided with a lead wire 7 whose one end is connected to the contact spring 6.
A pressure piece 9 is provided movably in the directions of arrows A and B, which are the directions in which the connector main body 5 is attached and detached. A coil spring 10 is compressed between the main body 5 and the pressure piece 9, and the spring 10 always biases the pressure piece 9 in the direction of arrow B. An operating section 9 is provided at one end of the pressure piece 9.
a is formed, and a protruding pressure part 9 is formed at the other end.
b is formed such that its tip abuts against the contact portion 6a of the contact spring 6.

Since the present invention has the above configuration, when connecting the conductor pattern 3a on the circuit board 3 and the lead wire 7, as shown in FIG. Connector holding part 2 on the side of the board 3 where the pattern 3a is not formed
Insert into a. Then, the contact spring 6 and the pressure piece 9
is inserted into the holding part 2a on the side where the pattern 3a is formed, but at this time, the pressure piece 9 is inserted into the coil spring 10.
Therefore, as shown in FIG. 2, the pressing part 9b is in a state of being moved in the direction B due to the elasticity of There is. At this time, the gap W1 between the support arm 5a and the contact spring 6 is equal to or slightly larger than the thickness W2 of the board 3, so the board 3 is immediately fitted between the spring 6 and the support arm 5a, and the main body 5
can be easily attached to the circuit board 3 with little force. In this way, the connector main body 5 is pushed in the direction A, the board end surface 3b comes into contact with the main body 5, and the contact spring 6
When the contact portion 6a and the conductor pattern 3a face each other, operate the operating portion 9a of the pressure piece 9 to release the pressure piece 9.
in the A direction against the elasticity of the coil spring 10,
Push in until the operation part 9a comes into contact with the housing end 2b. Then, as shown in FIG. 3, the pressurizing part 9b moves in the direction A, pressing the contact part 6a downward against the elasticity of the spring 6, so that the contact part 6a and the pattern 3a are securely connected. Contact, pattern 3
a and the lead wire 7 are electrically connected via the contact spring 6. The contact pressure at the contact point 11 at this time can be arbitrarily set depending on the rigidity and shape of the spring 6, and high contact pressure can be easily obtained. On the other hand, due to the elasticity of the spring 6, the pressure piece 9 is pressed against the wall surface 2c of the housing 2, and a frictional force that is much larger than the elastic force of the coil spring 10 is generated between the pressure piece 9 and the wall surface 2c. Therefore, even if you release your hand from the operating part 9a after pressing the pressure piece 9 in the A direction, the pressure piece 9 will not move in the B direction, and the contact spring 6, and therefore the lead wire 7 and the pattern 3
The connection with a is reliably maintained.

Next, when disconnecting the pattern 3a and the lead wire 7, first move the pressure piece 9 in the direction B to check the state in which the spring 6 is pressed by the pressure piece 9, in the completely opposite procedure to the above. When released and then pull out the connector body 5 in the direction B, the pattern 3a and the lead wire 7
connection will be terminated. At this time, the gap W1 is the spring 6
Because the elasticity of the main body 5 returns to a state equal to or slightly larger than the plate thickness W2, the main body 5 together with the pressure piece 9 can be pulled out from the substrate 3 and therefore the housing 2 with a small force.

In the above embodiment, the connection is made to the circuit board 3 in which the conductor pattern 3a is formed on only one side of the circuit board 3, but the connection is made to the circuit board 3 in which the conductor pattern 3a is formed on both sides of the circuit board 3. In contrast, another set of contact springs 6 and pressure pieces 9 may be provided on the support arm 5a portion of FIG. 1, and connections may be made from both sides of the board 3. Note that if the connection is made only on one side of the board 3 as shown in FIG. 1, the contact pressure may deform or damage the board 3 when the pressure piece 9 applies pressure, Spring 6
In order to prevent the connector body 5 from moving in the direction of arrow C in FIG. 1 due to the elasticity of the spring 6, the contact state between the pattern 3a and the spring 6 becomes unstable.
It is desirable to provide a support arm 5a.

As explained above, according to the present invention, the pressure piece 9 is moved in the direction of attachment and detachment of the connector body 5, which is provided with the contact spring 6 having the contact portion 6a bulging in the direction of the circuit board 3. Set up so that it can be moved freely,
When the main body 5 is attached to the substrate 3, the contact portion 6a can be pressed toward the substrate by the pressure piece 9, so that a high contact pressure can be maintained against the conductor pattern 3a on the substrate 3. Moreover, it becomes possible to easily attach and detach the connector body 5 with a small amount of force, regardless of the rigidity of the contact spring 6.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the connector according to the present invention, and FIGS. 2 and 3 are side views showing the operation of the pressure piece. DESCRIPTION OF SYMBOLS 1... Connector, 3... Circuit board, 3a... Conductor pattern, 5... Connector body, 6... Contact spring, 6a... Contact portion, 9... Pressure piece.

Claims (1)

[Scope of Claims] 1. A circuit board 3 housed in a housing 2 and having a conductive pattern 3a formed on its surface, and a contact portion 6a formed at a tip end thereof in a bulging direction in the direction of the conductive pattern 3a on the circuit board 3. The connector body 5 includes a connector body 5 provided with a contact spring 6, and a pressurizing piece 9 that is movable in the direction of attachment and detachment of the connector body 5 and has a protruding pressurizing part 9b that comes into contact with the contact spring 6, When the pressurizing piece 9 is inserted in the mounting direction of the connector body 5 until the end surface on the housing side contacts the housing end 2b, the pressing force of the pressurizing part 9b toward the circuit board 3 causes the pressurizing piece 9 to press against the housing end 2b. The contact portion 6a is bent to bring the contact portion 6a into surface contact with the conductor pattern 3a, and the pressure piece 9 and the wall surface 2 of the housing 2 are caused by the reaction force of the contact portion 6a that opposes the pressing force.
A connector characterized in that the connector is configured such that the surface contact state is maintained by contacting the surface of the connector.