JPS608377Y2 - Printed circuit board connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting device for connecting a printed circuit board to a connector.

For example, an electronic cash register incorporates a printed circuit board with a memory circuit, and after the memory circuit of the printed circuit board stores the input registration data, the printed circuit board is removed from the register machine and inserted into a cash advance counter to store the registered data. are being aggregated.

For this reason, terminal electrodes are formed on the printed circuit board, and the registration machine is provided with a connector for connecting the printed circuit board.

However, in connectors used to connect printed circuit boards with other circuits, elastic connection terminals are provided in the connector case, and the printed circuit board inserted into the connector case is connected to the connection terminals and the case. A configuration in which the connector is sandwiched between an inner wall or between a pair of connecting terminals and the connecting terminal is pressed against a terminal electrode of a printed circuit board is often adopted.

However, in conventional configurations, the connecting terminals are always in constant pressure contact with the printed circuit board with the maximum pressure force required to press the terminal electrodes against the printed circuit board, so it is difficult to insert or remove the printed circuit board from the connector. When the connection terminal always slides into contact with the board surface with maximum and constant pressure contact force,
There is a drawback that conductive parts such as terminal electrodes formed on the substrate surface are significantly worn away.

The present invention was developed in view of the above-mentioned circumstances, and reduces the wear of the conductive parts of the printed circuit board caused by the connecting terminal by changing the pressure contact force of the connecting terminal when inserting and removing the printed circuit board into the connector case. The present invention provides a printed circuit board connecting device.

Embodiments of the present invention shown in the drawings will be described below.

Figures 1 to 4 show an embodiment of the connecting device of the present invention, with Figure 1 being a perspective view, and Figures 2 to 4 being sectional views showing the case where a printed circuit board is inserted into a connector case. be.

In the figure, reference numeral 1 denotes a printed circuit board to be connected, for example, a circuit with a predetermined pattern is printed as a conductive part on the upper surface of the figure, and a plurality of terminal electrodes 2 are formed on the upper surface of the connection end (right end in the figure). . . . are arranged in a printed form with an interval in the width direction.

This printed circuit board 1 is held inside a board case 3 via a holding member 4, and the connection end of the board case 3 is open.

In the figure, 5 is a connector case made of an insulating material, 6 is an actuation member made of an insulating material, and 7 is a connecting terminal made of a conductive metal plate, and these constitute the connecting device of the present invention. .

The connector case 5 has a horizontally elongated box shape, and a horizontally elongated insertion opening 8 corresponding to the cross-sectional shape of the board case 3 is formed in the front side (left side in the figure) along the longitudinal direction.
A terminal port 9 is formed along the longitudinal direction on the rear side (right side in the figure).

Note that the connector case 5 is provided at a predetermined location of a device such as an electronic cash register.

The actuating member 6 has a cross-sectional shape of 11 mm and a length corresponding to the width dimension of the printed circuit board 1, and is disposed deep inside the connector case 5 along the longitudinal direction.

The actuating member 6 is attached to the axis 1 along the longitudinal direction in a perpendicular intermediate bend.
0 is inserted, and both ends of the shaft 10 are rotatably supported by bearings (not shown) provided at both ends of the connector case 5, so that the shaft 10 can be rotated in the vertical direction.

In the actuating member 6, the horizontal piece that protrudes forward from the front side of the intermediate bending part toward the insertion port 8 is the terminal attachment part 6a, and the vertical side part is designed so that the printed circuit board 1 inserted into the connector case 5 comes into contact with it. This is a substrate abutting portion 6b that protrudes downward from the rear side of the intermediate bent portion.

A plurality of connection terminals 7 are provided in the terminal mounting portion 6a of the actuating member 6.
. . . is each terminal electrode 2 of the printed circuit board 1.
They are arranged side by side with an interval in the width direction so as to face each other.

The intermediate portions of the connection terminals 7 are inserted and attached to the terminal mounting portion 6a from the front and back, and the front ends protrude forward toward the insertion opening 8 of the connector case 5 and are attached to the printed circuit board 1. It is bent downward into a dog-shaped shape so as to be in pressure contact with the terminal electrode 2 of or connected to a printed circuit board.

Further, a spring 11 made of a compression coil spring is provided at both ends of the rear side of the connector case 5, for example, to press the board contacting part 6b of the actuating member 6 from the rear side. 6b is pushed forward and the entire actuating member 6 is moved clockwise (upper side) as shown in the figure, that is, the connecting terminal 7...
A rotational biasing force is applied in a direction in which the terminal electrode 2 is separated from the terminal electrode 2 .

Stoppers 12 are provided at both ends of the connector case 5, for example, with which the front side of the board contacting portion 6b of the actuating member 6 comes into contact. The actuating member 6 is stopped at a position spaced apart from the terminal electrodes 2 at a predetermined distance.

In addition, a board case 3 is provided on the outside of both ends of the connector case 1.
A holding member 13.13 made of a leaf spring for holding down is attached facing forward.

Note that long holes 3a and 3b are formed along the longitudinal direction at the connection ends on both sides of the board case 3 in order to escape the shaft 10 and stopper 12 provided in the connector case 5 when the board case 3 is inserted into the connector case 5. There is a recess 3c in the middle of the outer surface of both sides in which the tip of the presser member 13.13 engages.

In the connecting device configured as described above, when the printed circuit board 1 is not connected, the actuating member 6 is moved by the spring 11 and the stopper 12 to connect the connecting terminals 7, . . . as shown in FIG. ... is the terminal electrode 2 of the printed circuit board 1.
...It is held at a position further apart.

When connecting the printed circuit board 1, connect the connecting end of the circuit board case 3 to the connector case 5 as shown in FIG.
Insert into the insertion opening 8 of.

As the board case 3 is moved in the insertion direction, the actuating member 6 and the connection terminals 7 in the connector case 5 enter into the board case 3 through the opening, as shown in FIG. .

Note that the shaft 10 and the stopper 12 are connected to the elongated hole 3a of the board case 3.
, falls within 3b.

The printed circuit board 1 is held by the circuit board case 3 with the connection terminals 2 on the front side and moves in the insertion direction. The tip abuts against the substrate abutting portion 6b of the actuating member 6.

In this case, the connection terminals 7 are spaced apart above the printed circuit board 1, and the terminal electrodes 2 of the printed circuit board 1 are
・reaches below the tip of the connection terminal 7.

Furthermore, when the board case 3 is moved in the insertion direction, the fourth
As shown in the figure, the printed circuit board 1 is also moved and the board contact portion 6
b is pushed toward the rear side against the spring force of the spring 11, so that the actuating member 6 moves counterclockwise (as shown in the figure) around the shaft 10.
lower side), that is, rotates toward the printed circuit board 1.

Due to the rotation of the actuating member 6, the connection terminals 7 attached to the terminal attachment portions 6a are also displaced in the direction approaching the top surface of the printed circuit board 1, and their tips are connected to the terminal electrodes 2 of the printed circuit board 1. Elastic pressure contact with...

In this case, the terminal electrode 2 and the connecting terminal 7...
. . . has a magnitude corresponding to the rotation angle of the actuating member 6 defined by the insertion depth of the printed circuit board 1.

Then, in the process of moving the board case 3 until its tip comes into contact with the rear wall surface of the connector case 5, the printed circuit board 1 also moves together and further presses the board contact portion 6b, so that the actuating member 6 Rotate further.

For this reason, the connection terminals 7 are also displaced further toward the printed circuit board 1, and their tips press the terminal electrodes 2 with even stronger pressing force.

When the board case 3 comes into contact with the inner surface of the rear side of the connector case 5, the printed circuit board 1 moves to the maximum insertion depth and the actuating member 6 rotates to the maximum angle, so that the connection terminals 7...
Terminal electrode 2... with the maximum pressure contact force required by...
Press into...

Here, the connection is made so that when the printed circuit board 1 is inserted to the maximum, the pressure of the connection terminal 7 is the maximum pressure contact force required for contacting the terminal electrode 2. terminal 7
The elastic force of . . . , the operating member 6 and the connecting terminal 7.
Conditions such as the position of . . . and the insertion depth of the printed circuit board 1 are set.

Note that when the printed circuit board 1 is inserted to the maximum extent, the tip of the holding member 13.13 engages with the recess 3c of the circuit board case 3, thereby maintaining the inserted state of the circuit board case 3.

In this way, the pressure contact force of the connection terminals 7 gradually increases depending on the insertion depth of the printed circuit board 1.

Furthermore, when the board case 3 is pulled out from the connector case 5, the printed circuit board 1 also moves in the direction of being pulled out, so the board contacting part 6b is pushed by the spring 11 and gradually displaces to the front. The actuating member 6 also gradually rotates clockwise in the figure.

As the actuating member 6 rotates, the pressing force of the connection terminals 7 to the terminal electrodes 2 gradually decreases.

When the printed circuit board 1 is extracted in this way, the pressure contact force of the connection terminals 7 gradually decreases.

Therefore, in the process of inserting and removing the printed circuit board 1 into the connector case 5, the terminal electrodes 2... of the connection terminals 7...
... changes, and the pressure contact force of the connection terminal 7 ... is required and maximum only when the printed circuit board 1 is inserted to the maximum, and the connection terminal 7 ... changes during the process of inserting and removing the printed circuit board. The terminals 7 are pressed against the terminal electrodes 2 with a pressure smaller than the maximum pressure.

For this reason, compared to the conventional case where the connecting terminal is constantly pressed against the terminal electrode with the maximum pressure contact force, the connecting terminal 7 makes sliding contact during the process of inserting and removing the printed circuit board 1. Wear of the terminal electrode 2 is greatly reduced.

Furthermore, when the connection terminal 7 comes into contact with not only the terminal electrode 2 but also other conductive parts formed on the printed circuit board 1, wear of the conductive part can also be reduced. Of course.

5 to 8 show other embodiments.

In this embodiment, the printed circuit board 1 has a plurality of terminal electrodes 2..., 2... on the upper and lower surfaces of the connection end.
... are arranged in the width direction alternately on the upper and lower sides.

Inside the connector case 5, there are a plurality of actuating members 6 located in the upper part in the same direction as the actuating members 6 of the above-described embodiment, and a plurality of actuating members 6 in the lower part in the opposite direction from the above-described embodiment. A plurality of actuating members 6 located in the same direction.
are provided for each.

These operating members 6..., 6... are the eighth
As shown in the figure, the terminal electrodes 2..., 2... on the upper and lower surfaces of the printed circuit board 1 are arranged alternately on the upper and lower sides, facing each other, and are arranged alternately on the upper and lower sides. It is provided so as to be movable up and down by a shaft 10.10 supported at 5.

For this reason, each operating member 6..., 6...
The terminal attachment parts 6a, 6a are located on the upper and lower sides, and the board contact parts 6b, 6b are combined with each other at the center.

In addition, the connection terminal 7 attached to the terminal attachment part...
. . , 7 . . . are also located on the upper and lower sides.

Further, at the rear of the connector case 5, for example, on both end sides, there is provided a holding rod 14 which is movable in the front and back direction, and each operating member 6..., 6,・
The holding part 14 that comes into contact with the board contact parts 6b, 6b of...
a is formed.

A spring 15 made of a compression coil spring is fitted in the holding rod 14 to move it forward, and the holding portion 14a is brought into contact with the substrate of the actuating member 6..., 6... Part 6a
, 6a is pressed.

Therefore, the operating members 6..., 6... are pressed by the holding rod 14 and rotated upward and downward so that the terminal mounting parts 6a, 6a are separated from each other. The position is maintained.

For this reason, the connection terminals 7... attached to the terminal attachment portions 6a, 6a of the actuating members 6..., 6...
. . , 7 . . . are also located apart from each other with a predetermined interval.

Then, as shown in FIG. 5, when the board case 3 is inserted into the connector case 5 and moved, the printed board 1
The connection terminals 7... are moved together as one, and as shown in Fig. 6, the connection terminals 7...
. . . , 7 . . . pass through the gap between the tips of the actuating members 6 .
b.

When the board case 3 is further moved, the printed circuit board 1 presses the board contact parts 6b, 6b to the rear side against the spring force of the spring 15, so that the actuating members 6..., 6...・・・
... rotates toward the printed circuit board 1 so that the terminal attachment parts 6a, 6a approach each other.

For this reason, the connection terminals 7..., 7... are also rotated toward the printed circuit board 1, and the terminal electrodes 2... formed on the upper and lower surfaces of the printed circuit board 1... , 2...
・Press against.

In the process of moving the board case 3 until it comes into contact with the stepped portion 5a formed inside the connector case 5, the actuating member 6...
. . , 6 . . . further rotates, and the terminal electrode 2 of the connection terminal 7 .
. . , 2 . . . The pressure contact force against each other gradually increases.

When the board case 3 comes into contact with the stepped portion 5a and the printed circuit board 1 is inserted to the maximum, the actuating members 6..., 6...
... rotates to the maximum and connects terminal 7..., 7...
...The pressure contact force becomes maximum.

Furthermore, when the board case 3 is pulled out from the connector case 5, the printed circuit board 1 is also pulled out together, so the operating members 6..., 6... are pushed by the holding rod 14. and gradually rotate in a direction away from the printed circuit board 1.

For this reason, the contact force with which the connection terminals 7..., 7..., press the terminal electrodes 2..., 2..., gradually decreases.

Therefore, in the process of inserting and removing the printed circuit board 1 into the connector case 5, the connection terminals 7..., 7...
... is pressed against the terminal electrodes 2..., 2... with a pressure contact force smaller than the required maximum pressure contact force, so the terminal electrodes 2..., 2... ...Wear is significantly reduced.

This connection device is used, for example, when attached to an electronic cash register to removably connect a printed circuit board, and can be applied to a wide range of applications.

Further, the actuating member may be one that attaches the connecting terminal and rotates in the direction of moving the connecting terminal toward and away from the terminal electrode in response to insertion and removal of the printed circuit board.

The means for holding the actuating member in the direction in which the connecting terminal is spaced apart from the terminal electrode is not limited to the embodiment, and may be such that the actuating member remains stationary by itself, for example, by the center of gravity.

As explained above, the printed circuit board connection device of the present invention has the following features:
When inserting and removing from the printed circuit board connector case,
As the actuating member rotates, the pressure contact force against the conductive portion of the printed circuit board changes, and the connection terminal is pressed against the conductive portion of the printed circuit board with a pressure contact force that is less than the maximum pressure contact force, so that wear on the conductive portion of the printed circuit board can be significantly reduced.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the connecting device of the present invention, with Figure 1 being a perspective view, and Figures 2, 3, and 4 showing the process of inserting a printed circuit board into a connector case. FIGS. 5 to 8 show other embodiments. FIGS. 5, 6, and 7 are sectional views showing the process of inserting the printed circuit board, and FIG. 8 shows the operation. FIG. 3 is a front view showing the arrangement of members. DESCRIPTION OF SYMBOLS 1... Printed circuit board, 2... Terminal electrode, 3... Board case, 5... Connector case, 6... Operating member, 6a...Terminal mounting part, 6b...Board contact part, 7...
・Connection terminal, end...insertion port, 10...shaft, 11...spring, 12...stopper,
13... Pressing member, 14... Holding rod, 15... Spring.

Claims (1)

[Scope of utility model registration request] A connector case into which a printed circuit board with terminal electrodes formed thereon is inserted, and an elastic connecting terminal is attached, and the connecting terminal is rotatable in a direction toward and away from the terminal electrode of the printed circuit board inserted into the connector case. and an actuating member provided in the connector case and held in a direction in which the connection terminal is separated from the terminal electrode, and the actuating member is in contact with the printed circuit board inserted into the connector case. A printed circuit board connecting device comprising a board contacting portion that rotates the actuating member in a direction in which the connecting terminal comes into contact with the terminal electrode.