JP2007287517A - Clamp mechanism of connector, and controller using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller using a miniaturized connector fixing member capable of improving a connector contact defect against vibration and impact, and of integrating a printed wiring board. <P>SOLUTION: This clamp mechanism of a connector is provided with: a printed wiring board with a CPU and a control circuit mounted thereon; a printed wiring board-side connector mounted on the printed wiring board; a wire-side connector fitted to the printed wiring board-side connector; and a clamp mechanism for fixing the printed wiring board-side connector and wire-side connector. The clamp mechanism is provided with a connector-side fixing part, a board-side fixing part, and an elastic body between the connector-side fixing part and the board-side fixing part, and is formed to close the connector-side fixing part and the board-side fixing part by the elastic body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a controller for driving industrial equipment and a clamp mechanism for a board-to-wire connector used in the controller.

When electrically connecting a plurality of printed wiring boards in an electronic device, it is common to use a board-to-wire connector that connects a connector provided at the end of the cable and a connector mounted on the printed wiring board. is there. In recent years, electronic devices have been downsized, and the connectors used are also required to be downsized.
Some conventional connectors clamp a connector and a printed wiring board (see, for example, Patent Document 1). As shown in FIG. 7, the printed circuit board 23 and the connector 22 are each provided with two mounting holes 33 adjacent to each other. The connector 22 is overlaid on the printed circuit board 23 so that the mounting holes 33 are aligned. The two attachment holes 33 are provided at both ends of the connector 22 in the longitudinal direction (the direction perpendicular to the paper surface in FIG. 7), and the clip 21 is attached to each. Since the two leg portions 25, 25 of each clip 21 are formed in accordance with the interval between the attachment holes 33, both the leg portions 25, 25 can be simultaneously pushed into the attachment holes 33, 33. The pushing operation may be performed by pinching the head 26 with a finger, aligning the locking claws 27, 27 with the mounting holes 33, 33, and pushing in as it is. When the locking claw 27 passes through the mounting hole 33 and comes out to the lower surface side of the printed circuit board 23, the locking claw 27 is locked to the edge of the mounting hole 33. On the other hand, the flange 31 of the head 26 is connected to the connector 22. Engage so as to press the upper surface. As a result, the connector 22 is fixed to the printed circuit board 23 as shown in FIG. Since the clip 21 uses the two attachment holes 33 for fastening at the same time, there is no need for fastening separately. The clip 21 is fixed to the two attachment holes 33 at both ends in the longitudinal direction of the connector 22 (the direction perpendicular to the paper surface of FIG. 7), whereby two clips 21 are attached to the four attachment holes. The connector 22 can be reliably fixed to the printed circuit board 23.
Further, the connection between a general connector and a printed wiring board is to fit a connector without a lock mechanism. As shown in FIG. 9, the electric wire side connector 8 is inserted into the printed wiring board side connector 7 arranged on the printed wiring board 6.

Conventional board-to-wire connectors are often used without a locking mechanism to hold the connector fitting because of the demand for miniaturization. The connector is not fitted due to vibration, impact, or external load. There was a problem of detachment. In addition, there is a situation where the connector is not properly engaged, and the electrical signal becomes noise, causing problems such as the surrounding workers becoming dangerous, such as runaway industrial equipment or abnormal operation. It was.
In addition, with the integration of mounting density in a printed wiring board, there is an increasing demand for integration of the board, and when the connector is clamped from the upper surface of the board, there is a problem that the board becomes high and cannot be integrated. It was.
The present invention has been made in view of the above problems, and provides a controller using a miniaturized connector fixing member that can improve connector contact failure against vibration, shock, etc. and can be integrated with a printed wiring board. The purpose is to do.

In order to solve the above problem, the present invention is configured as follows.
The invention according to claim 1 is a clamp mechanism for fixing a printed wiring board side connector mounted on a printed wiring board and an electric wire side connector fitted to the printed wiring board side connector, wherein the clamping mechanism is a connector. An elastic body is provided between the side fixing portion, the board side fixing portion, and the connector side fixing portion and the board side fixing portion, and the connector side fixing portion and the board side fixing portion are formed to be closed by the elastic body. Is.
According to a second aspect of the present invention, the clamp mechanism has the same shape formed symmetrically with respect to the printed wiring board.
According to a third aspect of the present invention, in the clamp mechanism, each of the connector side fixing portion and the board side fixing portion forms a U-shape.
According to a fourth aspect of the present invention, the clamp mechanism has protrusions formed on surfaces of the connector-side fixing portion and the board-side fixing portion that are in contact with the wire-side connector and the printed wiring board.
According to a fifth aspect of the present invention, the clamp mechanism includes a cable holding member between the connector side fixing portion and the board side fixing portion.
According to a sixth aspect of the present invention, there is provided a printed wiring board on which a CPU and a control circuit are mounted, a printed wiring board side connector mounted on the printed wiring board, and an electric wire side to be fitted to the printed wiring board side connector. In a controller including a connector, and a clamp mechanism for fixing the printed wiring side connector and the wire side connector, an opening through which an electric wire connected to the wire side connector passes is formed, and the printed wiring side connector and the The clamp mechanism is disposed so as to sandwich the electric wire side connector from above and below the printed wiring board.

According to the first to fifth aspects of the present invention, by providing the mechanism for clamping the connector, it is possible to prevent the connector from falling off and to further improve the reliability against vibration and impact. Moreover, the electric wire connected to the electric wire side connector can also be hold | maintained, and the disconnection in the base of the electric wire side connector can be prevented with respect to the stress of the direction which pulls an electric wire.
In addition, according to the invention described in claim 6, by using a controller having a connector clamping mechanism, the connector can be disengaged due to vibration, impact, or external load, or the connector can be disengaged. Since it does not occur, reliable operation is guaranteed without runaway or abnormal operation of industrial equipment due to electrical signal noise. In addition, by sealing the opening of the clamp mechanism and connecting the wire to the connector, there is no protrusion in the thickness direction of the printed wiring board, making it easy to integrate the printed wiring board and reducing the size of the controller. Is possible.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a connector fixing structure according to the present invention. FIG. 2 is a perspective view showing an embodiment using the fixing structure. FIG. 1 (a) is a front perspective view of the connector fixing structure of the present invention, and FIG. FIG. 1C is a rear perspective view of the connector fixing structure, and FIG. 1C is a front perspective view showing an open state of the connector fixing structure of the present invention. Reference numeral 1 denotes a connector side fixing portion, and 2 denotes a board side fixing portion, and the connector side fixing portion 1 and the board side fixing portion 2 are coupled by a spring 3. Reference numeral 4 denotes a protrusion provided on the connector-side fixing portion, and reference numeral 5 denotes a protrusion provided on the board-side fixing portion.
Reference numeral 6 denotes a printed wiring board, and 7 denotes a printed wiring board-side connector mounted on the printed wiring board 6. Reference numeral 8 denotes an electric wire side connector, one of which can be fitted to the printed wiring board side connector 7 and connected to the electric wire 9. Reference numeral 11 denotes a hole provided in the printed wiring board 6.
The part where the present invention is different from the prior art is a part using a connector fixing structure in which the connector side fixing part 1 and the board side fixing part 2 are configured to be movable by a spring 3.
The clamp mechanism 14 includes a connector side fixing portion 1 and a board side fixing portion 2 and is configured to be movable by a spring 3. The connector side fixing portion 1 and the board side fixing portion 2 are closed by the spring 3. Therefore, the connector side fixing part 1 and the board side fixing part 2 are opened by picking the handle 10.
Further, when the printed wiring board side connector 7 and the printed wiring board side connector 8 are fitted together, the electric wire 9 passes through the opening 15 of the connector side fixing part 1 and the board side fixing part 2, and the connector side fixing part 1 and the board The handle 10 of the side fixing part 2 is picked and opened so that the electric wire side connector 8 and the printed wiring board 6 are sandwiched. At this time, the protrusion 4 of the connector side fixing portion 1 is made to hook on the electric wire side connector. Further, the protrusion 5 of the board side fixing portion 2 is inserted into the hole 11 provided in the printed wiring board 6.
Thereby, it can prevent that the fitting of the printed wiring board side connector 7 and the printed wiring board side connector 8 is removed, and the protrusion 5 and the hole 11 prevent this connector fixing structure from falling off.
The printed wiring board 7 connected in this way includes a CPU circuit, a control circuit, and a communication circuit, and is stacked and housed in a controller as shown in FIG. 3 to control a motor and a robot.
Here, the spring is used to open and close the connector-side fixing portion and the board-side fixing portion. However, any spring can be used as long as it is elastically deformed and acts to open and close the connector-side fixing portion and the board-side fixing portion. . In addition, the shape of the spring arranged at the opening of the connector-side fixing portion and the board-side fixing portion has been described, but the side of the connector-side fixing portion and the board-side fixing portion may be inside or the connector-side fixing portion and the board-side fixing side. The position is not limited as long as it is in a position that acts to open and close the fixing portion. In addition, the protrusions on the connector-side fixing part have been described in the shape of hanging on the wire-side connector, and the protrusions on the board-side fixing part have been described as being inserted into holes provided in the printed wiring board. However, each protrusion has the same shape. However, it is not particularly limited to the shape of the present invention.

4, 5 and 6 are diagrams showing the configuration of the second embodiment. In the figure, 12 is a cable holding member, and 13 is the cable holding portion. The cable holding member 12 is fitted so that the electric wire 9 connected to the electric wire side connector 8 is sandwiched and held between the connector side fixing portion 1 and the cable holding portion 13. Thereby, the electric wire 9 connected to the electric wire side connector 8 can be hold | maintained.
The holding member 12 is disposed between the board side fixing portion 2 and the connector side fixing portion 1 and is configured not to move so that the cable is not sandwiched.
According to this configuration, the conventional connector can be easily provided with a locking mechanism, the connector can be prevented from falling off, and downsizing can be realized. Further, the reliability against vibration / impact can be further improved.

The perspective view which shows the clamp mechanism of the connector of this invention The perspective view of the clamp mechanism of the connector which shows 1st Example of this invention The perspective view which shows the controller of this invention The perspective view which shows 2nd Example of this invention. The perspective view of the clamp mechanism of the connector which shows 2nd Example of this invention The front view of the clamp mechanism of the connector which shows 2nd Example of this invention The figure which shows before mounting to the board | substrate of the clamp mechanism of the connector of a 1st prior art example. The figure which shows after mounting | wearing the board | substrate of the clamp mechanism of the connector of a 1st prior art example. A perspective view showing a second conventional connector

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector side fixing | fixed part 2 Board | substrate side fixing | fixed part 3 Spring 4 Protrusion 5 Protrusion 6 Printed wiring board 7 Normal printed wiring board side connector 8 Normal electric wire side connector 9 Electric wire 10 Handle 11 Hole 12 Cable holding member 13 Cable holding part 14 Clamp Mechanism 15 Opening 21 Clip 22 Connector 23 Printed Circuit Board 25 Leg 26 Head 27 Locking Claw 33 Mounting Hole

Claims (6)

In the clamp mechanism for fixing the printed wiring board side connector mounted on the printed wiring board and the electric wire side connector fitted to the printed wiring board side connector,
The clamp mechanism includes a connector-side fixing portion, a board-side fixing portion, and an elastic body between the connector-side fixing portion and the board-side fixing portion, and the connector-side fixing portion and the board-side fixing portion are formed by the elastic body. A connector clamping mechanism characterized by being formed to be closed. The connector clamping mechanism according to claim 1, wherein the clamp mechanism is formed in the same shape symmetrically with respect to the printed wiring board. The connector clamping mechanism according to claim 1, wherein each of the connector-side fixing portion and the board-side fixing portion has a U-shape. 2. The connector clamping mechanism according to claim 1, wherein protrusions are formed on surfaces of the connector-side fixing portion and the board-side fixing portion that are in contact with the wire-side connector and the printed wiring board. The connector clamping mechanism according to claim 1, wherein the clamping mechanism includes a cable holding member between the connector side fixing portion and the board side fixing portion. A printed wiring board on which a CPU and a control circuit are mounted, a printed wiring board side connector mounted on the printed wiring board, an electric wire side connector fitted to the printed wiring board side connector, the printed wiring side connector, and the electric wire In a controller having a clamp mechanism for fixing a side connector,
An opening through which an electric wire connected to the electric wire side connector passes is formed, and the printed wiring side connector and the clamp mechanism are arranged to sandwich the electric wire side connector from above and below the printed wiring board. A controller characterized by that.

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