JP2566412Y2 - Printed circuit board insertion / extraction lever - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of an insertion / extraction lever in a printed circuit board attaching / detaching mechanism.

[0002]

2. Description of the Related Art A detachable mechanism for a printed circuit board mounted on an electronic device such as a personal computer or various control devices is provided at an end of the printed circuit board in order to surely and smoothly perform the mounting and removing method. An insertion / extraction lever for rotating operation is provided.

[0005] That is, as shown in FIGS. 5 to 7, rotating pins 5 b, 5 b are provided on one surface of the rear end portion of the printed circuit board 1, and each of the rotating pins 5 b has an insertion hole 5 c with a fitting hole 5 c. Are rotatably fitted.

The insertion / extraction lever 5 has a pivot pin 5b.
Is pivoted about the hand operation unit 5d, and an engaging portion 5e for mounting the printed circuit board 1 is provided in a protruding jaw shape on the opposite side of the hand operation unit 5d with the fitting hole 5c interposed therebetween. I have.

[0005] The package connector 3 of the printed circuit board 1 is fitted to the backboard connector 4 of the box-shaped housing 2 by the engagement portion 5 e of the insertion / extraction lever 5. That is, as shown in FIG. 5, the printed circuit board 1 is inserted into each of the storage sections of the box-shaped casing 2, and as shown in FIG. The operation unit 5d is manually rotated in the direction of the arrow, and the engagement unit 5e is
Is engaged with the inner surface of the open end 2a.

The inner surface of the opening end 2a and the engaging portion 5
e, the fitting portion 5c of the insertion / extraction lever 5 is moved to the rear side of the box-shaped housing 2 by the rotation of the engaging portion 5e (indicated by an arrow in the figure), and the The printed circuit board 1 similarly moves to the back side of the box-shaped housing 2 via the moving pins 5b.

In this way, the package connector 3 provided at the end of the printed circuit board 1 and the backboard connector 4 provided on the box-shaped casing 2 are electrically connected at corresponding positions. At the same time, the insertion / extraction lever 5
Engages with a lock lever 6 provided on the same one side of the printed circuit board 1 to be in a locked state. The printed board 1 thus mounted cannot be taken out of the box-shaped casing 2 and is in a desired state.

[0008]

However, since the insertion / extraction lever 5 is rotatable in a state in which the rotating pin 5b and the fitting hole 5c are fitted with a slight frictional force, the lever 5 shown in FIG. May be in a state where the hand operation unit 5d is stationary in the horizontal direction.

In this state, when the operator pushes the printed circuit board 1 vigorously in the direction indicated by the arrow in the figure, the printed circuit board 1 is forcibly inserted into the storage portion of the box-shaped casing 2, and the package connector 3 and the backboard connector 4 are pressed. However, there is a problem that the connector part is scratched or damaged due to collision.

Therefore, if the connector portion is scratched, rust is generated from the connector portion, which eventually causes an obstacle to electrical connection. If the connector portion is damaged, it must be replaced with a new printed circuit board, and the reliability of the product is poor. As a result, there is a problem that the cost is increased.

The present invention has been made in view of the above-mentioned problems, and when inserting and mounting a printed circuit board in a box-shaped housing, reliability of the insertion operation is added to eliminate the work error and to improve the reliability of the product. It is an object of the present invention to provide a printed circuit board insertion / extraction lever that improves the operability.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the present invention and achieve the above-mentioned objects, the gist of the present invention is to provide an engaging portion which engages with an open end of a box-shaped housing for housing a printed circuit board, and a printing device. A hand-operating portion for applying an operating force when inserting / removing the board; and a lever for pivotally mounting the printed board on a pivot pin provided on the rear end side of the printed board. The fitting hole of the printed circuit board is loosely fitted to the rotating pin so as to be freely rotatable, and the engaging portion is in contact with the outer surface of the opening end of the box-shaped housing. Is provided so as to have a gap between the connector of (1) and the connector of the box-shaped housing.

[0013]

According to the printed circuit board insertion / extraction lever of the present invention, the insertion / extraction lever is freely rotated by its own weight because it is loosely fitted to the rotation pin of the printed circuit board. Therefore, in the state shown in FIG. 5, the hand operating portion of the insertion / extraction lever disposed above the rear end of the printed circuit board is not maintained in a horizontal state but rotates downward, and the entire insertion / extraction lever is in a vertical state. And is pivotally supported by a rotating pin. In this way, the stopper of the insertion / extraction lever is held against the outer surface of the opening end of the box-shaped housing, and the printed circuit board is simply inserted into the back of the storage portion of the box-shaped housing,
The stopper comes into contact with the outer surface of the opening end to stop the insertion operation. At this time, since a predetermined gap is maintained between the package connector of the printed circuit board and the backboard connector of the box-shaped housing, scratches and breakage due to impact when the printed circuit board is incorrectly inserted do not occur. .

[0014]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 are explanatory views showing the use state of the insertion / extraction lever of the present invention, and FIGS. 3 and 4 are a front view and a side view of the insertion / extraction lever. In the figure, reference numeral 7 denotes an insertion / extraction lever according to the present invention, and 8 denotes a stopper. Note that the same reference numerals are given to portions corresponding to the conventional example.

The insertion / extraction lever 7 is provided with a fitting hole 5c so as to be loosely fitted with a diameter slightly larger than the diameter of the pivot pin 5b of the printed circuit board 1. As shown in FIG. 3, a stopper 8 which is a smooth wall surface is provided at a predetermined distance a from the fitting hole 5c in the engaging portion 5e which engages with the inner surface of the portion 2a.

The stopper 8 is, as shown in FIG.
When the rotation pin 5b and the fitting hole 5c of the printed circuit board 1 are fitted and the insertion / extraction lever 7 is freely rotated to be in a vertical state, the insertion / extraction lever 7 is held substantially parallel to the outer surface of the opening end 2a. Is provided.

The distance a from the fitting hole 5c is
As shown in FIG. 2, when the stopper 8 comes into contact with the outer surface of the opening end 2a, the end surface of the package connector 3 provided at the end of the printed circuit board 1 and the backboard connector of the box-shaped housing 2 4 is set so as to have a gap s between itself and the end face. How much the gap s is a matter of design.

FIG. 1 shows an insertion / extraction lever 7 formed at least at an upper side at the rear end of the printed circuit board 1 and used by an operator. While holding the printed circuit board 5d, the printed circuit board 1 is inserted into the storage section of the box-shaped casing 2, and the insertion / extraction lever 7 is rotated to engage the engaging portion 5e with the inner surface of the opening end 2a, thereby moving the printed circuit board 1 into the storage section. The package connector 3 and the backboard connector 4 are electrically pushed to the side to electrically connect the package connector 3 and the backboard connector 4.

On the other hand, when the operator does not hold the insertion / extraction lever 5d and pushes the end face of the printed circuit board 1 vigorously as shown by the arrow in FIG. 1, the insertion / extraction lever 7 rotates by its own weight as shown in FIG. Moved to the vertical state and stopper 8
Are held substantially parallel to the outer surface of the opening end 2a, and have a gap s between them before the end surface of the package connector 3 and the end surface of the backboard connector 4 collide with each other. The outer surface of the portion 2a contacts.

Thus, the operator mistakenly prints the printed circuit board 1.
Even if the connector is inserted, the stoppers 8 of the insertion / extraction lever 7 according to the present invention prevent the connectors 3 and 4 from being scratched or damaged. And
The operator cannot connect the connectors 3 and 4 simply by simply pushing the printed circuit board 1, so be sure to turn the insertion / extraction lever 7 by hand to move the printed circuit board 1 into the storage section of the box-shaped housing 2. I will be wearing it. Thus, the electrical connection between the connectors 3 and 4 is ensured.

As described above, the stopper 8 of the insertion / extraction lever 7
Is a smooth wall surface substantially parallel to the outer surface of the opening end 2a, but is not limited to this.
It may be a rod-shaped leg protruding at a predetermined length toward the outer surface of “a”.

[0022]

As described above, the insertion / extraction lever of the printed circuit board according to the present invention is provided with an engaging portion that engages with the opening end of the box-shaped housing that houses the printed circuit board, and a lever for inserting and removing the printed circuit board. A lever for manually applying an operating force at the time of insertion and removal of the printed circuit board, which is pivotally mounted on a pivot pin erected on the rear end side of the printed circuit board. The connector is connected to the connector at the tip of the printed circuit board when the engagement portion is brought into contact with the outer surface of the open end of the box-shaped housing. A stopper is provided so as to have a gap between it and the connector of the housing.This prevents damage to the connector even if it is erroneously operated during the insertion of the printed circuit board, and ensures electrical connection of the connector. Therefore, it has an excellent effect of improving product reliability. Achieve the.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a use state of the insertion lever of the present invention.

FIG. 2 is an explanatory view showing a use state of the insertion lever of the present invention.

FIG. 3 is a front view of the insertion / extraction lever according to the present invention.

FIG. 4 is a side view of the same.

FIG. 5 is an overall perspective view showing a printed circuit board attaching / detaching mechanism using an insertion / extraction lever according to a conventional example.

FIG. 6 is an explanatory diagram showing a state in which a printed circuit board is inserted using the insertion lever according to the conventional example.

FIG. 7 is an explanatory view showing a state in which an insertion / extraction lever according to the conventional example is rotated around a rotation pin, and a printed circuit board is inserted while being held in a horizontal state.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 printed circuit board, 2 box-shaped housing, 2a open end, 3 package connector, 4 backboard connector, 7 insertion / extraction lever according to the present invention, 8 stopper.

Claims (1)

(57) [Scope of request for utility model registration] The printed circuit board includes an engaging portion that engages with an open end of a box-shaped housing that houses the printed circuit board, and a hand operating portion that applies an operating force when inserting and removing the printed circuit board. A printed circuit board insertion / extraction lever pivotally mounted on a pivot pin provided on the rear end side, wherein a fitting hole of the insertion / extraction lever is loosely fitted to the pivot pin so as to be freely rotatable, and A stopper which is positioned so as to have a gap between the connector at the front end of the printed circuit board and the connector of the box-shaped housing when the engaging portion is brought into contact with the outer surface of the open end of the box-shaped housing; A printed circuit board insertion / extraction lever characterized by having a