JPS5911496Y2 - circuit board mounting equipment - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a circuit board mounting device.

Conventionally, a plurality of circuit boards used in measuring instruments and the like are arranged in a circuit house, and are inserted into a connector of the circuit house to electrically connect with the connector.

A swing lever is rotatably attached to a corner of each circuit board, and the circuit board can be attached to and removed from the connector by rotating the swing lever.

Furthermore, in order to prevent the circuit board from being pulled out of the connector due to vibrations of the circuit house, a stopper bar is inserted so as to come into contact with the edge of each circuit board.

However, with this stopper bar, each time a desired circuit board is replaced, the stopper bar must be inserted and removed each time, which is troublesome.

The purpose of the present invention is to provide a circuit board mounting device that reliably prevents the circuit board from being pulled out without using a stopper bar, and that allows the circuit board to be replaced easily and efficiently. .

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

As shown in FIGS. 1 and 2, a large number of connectors 2 are installed in the circuit house 1 in the vertical direction.

Each connector 2 has a plurality of integrally embedded terminals 3 protruding from the circuit house 1, and connecting portions 3a, 3b of the terminals 3.
protrudes inward from the circuit house 1.

In addition, the circuit house 1 has an opening 1a on the side opposite to the connector 2.
Guide frames 4, 4a each having a U-shaped cross section are formed on the left and right side edges of this opening.

A large number of circuit boards 5 are disposed in the circuit house 1, and a projecting plate portion 5a integrally protruding from each circuit board connects each connector 2.・・・・・・
It is inserted between the connecting parts 3a and 3b and is in an electrically conductive state.

Swing levers 6, 6a are symmetrically attached to both left and right corners of the circuit board 5 located on the side of the opening 1a so as to be swingable about pins 7, 7a.

Since the pair of swing levers 6 and 6a have substantially the same structure, the specific structure of one swing lever 6 will be explained.

That is, as shown in FIG. 3, the swing lever 6 has two pivot plates 8 on the inside (right side) of the base for pivotally attaching the pin 7.
, 9 are provided protrudingly spaced apart from each other, and a spherical fulcrum portion 10 is provided on the outside.

A stopper piece 12 is protruded from the outside of the tip (right side in the figure) and forms the same plane as the lower pivot plate 9.

A fixing protrusion 13 is provided on the upper surface of the tip of the stopper piece 12, and the upper end surface of this protrusion forms a slope 14 that slopes inward as shown in FIG.

Note that the other swing lever 6a has the same structure by adding a to the number indicating the posture of the swing lever 6.

The swing lever 6 is attached to pivot plates 8 and 9 as shown in FIGS. 1 and 4.
The circuit board 5 is fitted into the gap so that it can swing with pins 7, and the fulcrum part 10 is attached to the circuit house 1.
It is arranged so as to fit into the guide frame 4 of.

The fulcrum portion 10 abuts the inner surface of the guide frame 4 at a fulcrum F, and can also abut at a point F1.

The stopper piece 12 extends to the lower surface of the circuit board 5.
A protrusion 13 at the tip thereof is enlarged so that it can be engaged with and detached from a hole 15 formed in the circuit board 5.

The swing lever 6 has elasticity in the thickness direction of the circuit board so that the fixing protrusion 13 can be inserted into and removed from the hole 15.

Since the other swing lever 6a is attached to the circuit board 5 in an inverted state from the swing lever 6, the stopper piece 12a
extends to the upper surface of the circuit board, and the fixing protrusion 13a is large enough to be removably engaged with a hole 15 formed in the circuit board.

Therefore, in the state shown in FIG.
. Even if vibration occurs in the house 1, the circuit board 5 and the connector 2 are not disconnected from each other and are prevented from being pulled out.

Next, the operation of attaching and detaching the circuit board will be explained.

From the state shown in the first figure, push down the operating knob 11 of the swing lever 6 in a direction perpendicular to the plane of the paper and rotate it in the direction of the arrow (counterclockwise) about the pin 7 to move the protrusion 13 of the stopper piece 12 into the hole 15. Remove from.

Similarly, lift the operating knob 11a of the other swinging lever 6a and rotate it slightly in the direction of the arrow to insert the protrusion 13a into the hole 15.
Remove from.

Then, hold each knob 11 and 11 a to each swing lever 6.
, 6a are swung to the positions shown by the chain lines in FIG.

At this time, by rotating the swing levers 6, 6a, the fulcrum parts 10, 10
a comes into contact with points F1, F1 on the inner end surfaces of the guide frames 4, 4a, and by the lever principle using these points as fulcrums, the circuit board 5 is pulled out from the circuit house 1, the projecting plate part 5a is detached from the connector 2, and the circuit board 5 is pulled out from the circuit house 1. The board 5 can now be taken out.

When inserting the circuit board 5 into the circuit house 1, lightly insert the projecting plate portion 5a into the connector 2, and then rotate the operation knobs 11, 113 of the swing levers 6, 6a clockwise. and the fulcrum portions 10, 10a are the guide frames 4,
4a, the circuit board 5 is pushed deeply into the circuit house 1 by the lever principle, and the projecting plate portion 5a is inserted into the connector 2.

At the same time, the protrusion 1 of the stopper piece 12 of the swing lever 6
3 is inserted into the hole 15 from the bottom surface of the circuit board 5, and the protrusion 13a of the swing lever 6a is inserted into the hole 15 from above.

As a result, the position of the circuit board 5 is maintained and fixed.

Note that if two swing levers are provided as in the above example, it is possible to reliably prevent the circuit board from coming off, but it is also possible to use only one swing lever. The movable lever may be extended and the fixing protrusion 13 at the tip may be engaged with the hole in the circuit board.

As described above, according to the present invention, it is possible to reliably prevent the circuit board from coming off with a simple structure, and the conventional stopper bar is not required, making the work of replacing the circuit board easy and efficient. It is possible to do so.

Furthermore, the number of parts required is small, making manufacturing and assembly easier, and has great practical effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view showing the state of use, Fig. 2 is a sectional view taken along the line II-II in Fig. 1, and Fig. 3 is a perspective view of the swing lever. FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1...Circuit house, 2...Connector,
4,4 a...Guide frame, 5...
・Circuit board, 6, 6a... Swing lever, 7, 7
a... Pin, 10, 10a... Fulcrum part, 11, 11a... Operation knob, 12, 12
a... Stopper piece, 13, 13 a...
...Fixing protrusion, 15...Fixing hole, F, F.・・・
····fulcrum.

Claims (2)

[Scope of utility model registration request] 1. A circuit house with a connector built in on one side and an opening on the other side, which can be inserted into this circuit house, one side can be attached to and detached from the connector, and the other side has a fixing hole in the edge. A circuit board, which is rotatably attached to the other corner of the circuit board, has a fulcrum part that can come into contact with the inner surface of the circuit house, and has a stopper piece extending toward the fixing hole. A fixing protrusion that can be attached to and detached from the fixing hole is provided at the tip of this stopper piece, and the pivot lever has elasticity in the thickness direction of the circuit board. A circuit board mounting device characterized in that the circuit board is attached to and detached from the connector using a fulcrum. 2. The circuit board mounting device according to claim 1, wherein the swing levers are attached to both corners of the other side of the circuit board.