JPH02213068A - Ejector of printed circuit substrate - Google Patents

Abstract

PURPOSE:To prevent a substrate from dropping from a connector with simple structure by forming a projected part in the operational part of an ejector and forming a caved part to be connected with the projected part so as to lock the rotation of the operational part at the time of installation of the substrate to the connector. CONSTITUTION:A pair of pinching parts 10 are formed in an operational part of an ejector 1 and at the same time a semicircular caved part 11 is formed in the pinching parts 10. Meanwhile, a through hole 12 is formed in a printed circuit substrate 3 in the position where it is connected with the projected part 11 so as to make it possible to connect with the projected part 11. While the operational part 5 is rotated toward A direction, the projected part 11 is elastically deformed and inset in the through hole 12, and thus the substrate 3 is installed in the prescribed position of a housing 8 of the connector 7 and the installation state is locked. Also, by rotating the operational part 5 toward B direction, the connection of the projected part 11 of the pinching part 10 and the through hole 12 is released. By this way, installation of a connector in the substrate is locked with simple structure and dropping is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an ejector for a printed circuit board, and more particularly to an ejector that facilitates attachment and detachment of a printed circuit board to a connector.

(Prior art) Conventionally, this type of ejector was mounted so as to be rotatable around a fulcrum provided on a printed circuit board, and by rotating the operating section, the operating section engaged with the connector body and doubled the operating force. However, when the printed circuit board is attached to and detached from the connector, it can be assisted to facilitate attachment and detachment.

However, the effect of such an ejector to lock the printed circuit board into the connector was dependent only on the force of the connector electrodes holding the electrode section of the printed circuit board. The target may fall off, and in order to prevent the printed circuit board from falling off, it is necessary to provide another mechanism, which has the disadvantage of increasing the number of parts and making the structure complex and expensive.

(Object of the Invention) The present invention has been made to eliminate the above-mentioned defects, and is a printed circuit board ejector that can prevent the printed circuit board from falling off from the connector by simply adding a simple mechanism to the printed circuit board ejector. The purpose is to provide

(Summary of the Invention) In order to achieve the above object, the present invention has the following configuration.

That is, a convex portion is formed on either the printed circuit board or the operating portion, and a recessed portion is formed on the other side to engage with the convex portion and lock rotation of the operating portion when the printed circuit board is attached to the connector. do.

(Embodiments of the Invention) Two embodiments of the present invention will be described below in detail based on the drawings.

Here, in order to facilitate understanding of the present invention, the structure and operation of a conventional ejector will be briefly explained.

That is, as shown in FIGS. 4(a) and 4(b), the ejector 1 is a spring bin 4 with a fulcrum 2 provided on a printed circuit board 3.
By rotating the operation part 5 in the direction of the arrow A in the figure, the action part 6 can be moved into the housing 8 of the connector 7.
The printed circuit board 3 can be easily attached to the connector 7 by doubling the operating force by engaging with the engaging portion 9 formed in the .

On the other hand, by rotating the operating portion 5 of the ejector 1 in the direction of the arrow B in the figure, the 1-acting portion 6 engages the engaging portion 9 in the opposite direction, thereby easily detaching the printed circuit board 3 from the connector 7. Can be done.

However, since such a conventional ejector 1 does not have a mechanism for locking the printed circuit board 3, it is necessary to provide another mechanism to prevent the printed circuit board 3 from falling off the connector 7. It is.

In order to solve this deficiency, an embodiment of the present invention is shown in FIG.
) and (b).

That is, a pair of clamping parts 10 are formed on the operating part 5 of the ejector l, and this clamping part! While a hemispherical convex portion 11 is formed on O, this convex portion is formed on the printed circuit board 3! A through hole I2 is formed at a position aligned with I to enable engagement with the convex portion 11.

With this configuration, by rotating the operating unit 5 in the direction of the arrow A and fitting the convex portion II into the through hole 12 while elastically deforming it, the printed circuit board 3 can be inserted into the connector 7 housing 8 even though the configuration is simple. It is possible to lock the mounting state of the board while mounting it in a predetermined position.

On the other hand, by rotating the operating section 5 in the direction of arrow B, the convex section 11 of the holding section 10 can be disengaged from the through hole 12 of the printed circuit board 3.

FIGS. 2(a) and 2(b) show another embodiment, in which the fulcrum part 2 is loosely fitted so as to be movable in the thickness direction of the printed circuit board 3,
The gap between the holding portions (2) 0 is set to be large, and the fill spring 13 provided on the fulcrum portion 2 urges one of the convex portions 11 to engage with the through hole 12 of the printed circuit board 3.

According to this embodiment, locking and unlocking can be performed more easily by simply moving the operating portion 5 in the thickness direction of the substrate 3 without elastically deforming the convex portion 11.

FIGS. 3(a) to 3(d) show still another embodiment, in which the convex portion 1 is constituted by a O-shaped lock pin I4, and the tip end +4a of this lock pin 14 is the operating portion 5 of the ejector 1. It is possible to move in and out of the gap 15 formed in the gap 15, and rotate the operating part 5 in the direction of arrow A to open the gap! After inserting the printed circuit board 3 into the lock pin 14, the bent portion 14b of the lock pin 14 is pressed so that its tip 14a is engaged with the through hole 12, thereby reliably locking the rotation of the operating portion 5.

In addition, the lock can be easily released by pressing the seat portion 14c of the lock pin 14 to release the distal end portion 14a from the engagement with the through hole 12.

Note that an expansion spring may be inserted between the tip portion 14c and the main body 1 in FIG. When inserting the plate, the tip end +4c is pushed in against the spring, while the pushing force is released after insertion.

This invention is not limited to the above embodiments.

For example, the through hole 12 of the printed circuit board 3 may be replaced with a depression, and the holding portion! It goes without saying that the same effect can be obtained by simply setting the gap smaller than the width of the substrate without forming the convex portion 11 on O, and locking by the frictional force between the substrate and the holding portion xO. .

(Effects of the Invention) As explained above, in this invention, it is possible to lock the attachment of the printed circuit board to the connector and prevent it from falling off, despite the simple structure, by engaging the convex portion and the concave portion. It has a remarkable effect.

[Brief explanation of the drawing]

FIG. 1(a) is a plan view of an embodiment according to the present invention.
Figure (b) is a side view of Figure 1 (a), Figure 2 (a> is a plan view of another embodiment, Figure 2 (b) is a side view of Figure 2 (a), Figure 3 (a) is a side view of another embodiment, FIG. 3(b) is a front view of FIG. 3(a), and FIGS. 3(c) and (d) are FIG.
A-A sectional view for explaining the effect of a), Fig. 4(a)
) is a plan view of the conventional example, and FIG. 4(b) is a side view of FIG. 4(a). DESCRIPTION OF SYMBOLS 1... Ejector, 3 4... Spring bin part, 6... Action part, 7 - Housing (connector body)... Through hole (recess). ···Printed board. (fulcrum), 5...operation...connector, 8..., 11...convex portion, 12 14...lock pin patent applicant Toyo Tsushinki Co., Ltd. agent Patent attorney Hitoshi Suzuki

Claims (2)

[Claims] (1) It is attached so as to be rotatable around a fulcrum provided on the printed circuit board, and the operating section engages with the connector body by rotating the operation section to assist when attaching and detaching the board to the connector. In the ejector, which doubles the operating force when the printed circuit board and the operating section are formed, a convex portion is formed on one of the printed circuit board and the operating section, and the other is engaged with the convex section to lock rotation of the operating section when attached to the connector. An ejector for a printed circuit board, characterized in that it has a recess formed therein. (2) The convex portion is constituted by a retractable lock pin,
2. The ejector for a printed circuit board according to claim 1, wherein rotation of the operating portion is locked by moving the lock pin.