JPH097693A - Connector - Google Patents

Abstract

PURPOSE: To provide a socket connector in which the operability at removal of a small circuit board to be connected is improved, the mounting density can be also improved, and the risk of operation mistake is minimized. CONSTITUTION: A recessed part 11 is formed on the operating surface of the eject button 91 of a socket connector 9 used for the connection of a small circuit board 8. When the small circuit board is removed, the tip of an operating jig such as driver is engaged with the recessed part to press the eject button. A bell crank 93 is turned according to the movement of the eject button to push out the small circuit board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket connector, and more particularly to a socket used for mounting a small circuit board such as a memory module or other expansion board on a main circuit board of an electronic device. Regarding connectors.

[0002]

2. Description of the Related Art Conventionally, as a connector for connecting a small circuit board to a main circuit board, for example, a socket connector having an eject mechanism for detaching the connected small circuit board from the connector as shown in FIG. There is 7. This socket connector 7 has an L-shaped lever 71 on at least one end in the longitudinal direction of a housing 7a made of an insulator.
Is rotatably supported by a pin 73, and the operating portion 71a of the lever 71 is rotated outward, whereby the action portion 71b engaged with the tip of the small circuit board 8 is moved upward to move the small portion. The circuit board 8 is pushed out in the removal direction.

[0003]

However, in the socket connector 7 shown in FIG. 7, when the small circuit board 8 is removed, the operating portion 71a of the lever 71 is attached to the housing 7a.
Must be rotated so that it opens to the outside of
Since a large operation space is required to secure the rotation of 1, the mounting density of the small circuit boards 8 cannot be increased.

Therefore, an object of the present invention is to provide a socket connector which can improve the operability at the time of removing a small circuit board which is an object to be connected, and can improve the mounting density and the risk of an operation error. To do.

[0005]

According to the present invention, in a socket connector used for connecting a small circuit board, a housing for receiving the small circuit board and an eject disposed at an end of the housing and moved by an operation. Button,
A socket connector including a bell crank that rotates according to the movement of the eject button to push the small circuit board out of the housing, and has a recess formed on an operation surface of the eject button.

According to another aspect of the present invention, there is provided an eject button for detaching an object to be connected to a socket connector, wherein an operating surface is provided with a concave portion having a shape that converges toward an inner depth. You can get the eject button.

The cross section of the recess perpendicular to the depth direction may be circular, rectangular or cross-shaped.

It is preferable that the recess has a shape that converges toward the inner depth.

[0009]

In the socket connector according to the present invention, when the push button is pushed during mounting of the small circuit board, the bell crank rotates in the direction of pushing up the small circuit board and ejects the small circuit board. When the ejected small circuit board is pulled out by hand, the removal work is completed. In addition, since the operation surface of the eject button is formed with a recess, it is possible to press the tip of a jig such as a driver with the eject button engaged, and therefore the jig slips when the eject button is pressed The risk of operation mistakes such as button release is reduced.

[0010]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a socket connector 9 according to an embodiment of the present invention in a state in which a small circuit board 8 is mounted. The socket connector 9 has a housing 9a made of an insulator for receiving the small circuit board 8, an eject button 91 provided at an end portion in the longitudinal direction of the housing 9a, and rotated according to the movement of the eject button 91 to rotate the small circuit board. 8 has a bell crank 93 that pushes out one end from the housing 9a.

When the eject button 91 is pushed with a finger while the small circuit board 8 is mounted, the bell crank 93 rotates in the direction of pushing up the small circuit board and ejects the small circuit board 8. When such an ejecting mechanism is provided only on one end side of the socket connector, the other end of the small circuit board 8 is lifted around the small circuit board 8 and the one end side is ejected. Then, if the ejected small circuit board 8 is pulled out by hand, the removing work is completed.

Further, when the eject mechanism is provided on both ends of the socket connector and the eject buttons 91 of the eject mechanisms on both sides are simultaneously pushed,
The bell cranks 93 on both sides rotate simultaneously and the small circuit board 8
Can be ejected while maintaining the parallel state.

In this socket connector 9, it is only necessary to manually push in the eject button 91, so that the packaging density of the small circuit boards 8 can be increased.
However, when the small circuit boards 8 are mounted at a high density, the operation space becomes narrow, so that it becomes difficult to operate the eject button 91. Therefore, it is conceivable to push the eject button 91 with an operating jig such as a driver. In this case, the operation jig is pressed against the surface of the eject button 91, that is, the operation surface.
If the surface of the eject button 91 is flush, the tip of the operating jig may slip on the surface when a force is applied, and there is a risk of damaging peripheral devices.

Focusing on this point, the eject button 91 is provided with a slip prevention means for preventing the operation jig from slipping. Various examples of this slip prevention means will be described in detail below.

2 (a) and 2 (b) show an example of the slip prevention means. In this example, the eject button is indicated by reference numeral 1. The eject button 1 is formed in a columnar shape, for example, of synthetic resin or other material. The upper portion 10 of the eject button 1 is provided with a recess 11 extending downward from the upper surface in FIG. 2B. This recess 11
Has a circular horizontal cross section, and the wall surface defining the recess 11 is a tapered surface 11a such that the diameter of the recess 11 becomes smaller toward the inside. That is, the recess 11 has a shape that converges toward the inner depth. The inclination angle of the tapered surface 11a is not particularly limited, but is set to, for example, about 25 degrees from the axial center of the eject button 1 according to the tip angle of the driver.

FIG. 3 is an explanatory view of the operation when the eject button 1 shown in FIG. 2 is used. When ejecting a small circuit board, the tip of an operating jig J such as a driver is inserted into the recess 11 of the eject button 1. At this time,
As shown in (a), the operation jig J is the eject button 1
When it is not inserted straight into the axis line of the concave portion 1 while the tip of the operating jig J slides along the tapered surface 11a.
1 is entered, and as a result, the approaching posture of the operating jig J is corrected as shown in FIG. 3 (b). Then, FIG.
If the operating jig J is pushed in with the axis of the operating jig J and the axis of the eject button 1 aligned as shown in Fig. 2, the eject mechanism operates and the small circuit board is removed as described above. Be seen.

Depending on the mounting position of the socket connector, it may be possible to easily push the operating jig J straight against the eject button 1. In this case, since the tapered surface 11a is unnecessary, The wall surface defining the recess 11 may be formed in parallel.

FIG. 4 shows another example of the slip prevention means. In this example, the eject button is indicated by reference numeral 3. In the upper portion 30 of the eject button 3, a concave portion 31 having a rectangular horizontal cross section is formed. The wall surface that defines the concave portion 31 is a tapered surface 31a, and the entrance angle of the jig is corrected in the same manner as described above. In FIG. 3, the shape of the horizontal cross section of the recess 31 is rectangular, that is, quadrangular (although the corners are chamfered), but it may be triangular or any other polygon. It goes without saying that it is good. Further, the wall surface of the recess 31 may be a parallel surface instead of the tapered surface 31a.

FIG. 5 shows still another example of the slip prevention means. In this example, the eject button is indicated by reference numeral 4. A recess 41 is formed in the upper portion 40 of the eject button 4. The recess 41 has a shape similar to that of forming a rectangular parallelepiped hole 42 extending downward from the upper surface and forming a wedge-shaped groove 43 on each of the four side surfaces of the hole 42. That is, the recess 41 has a cross-shaped horizontal cross section. The reason why the concave portion 41 is formed in a cross shape in this manner is because it is considered that a cross driver is used as the operation jig. The wall surface that defines the cross-shaped recess 41 is also formed to have a tapered surface 41a. The wall surface of the recess 41 may not be a tapered surface but may be a parallel surface.

FIG. 6 shows still another example of the slip prevention means. In this example, the eject button is indicated by reference numeral 5. A recess 51 and a cross-shaped groove 52 above the recess 51 are formed in the upper portion 50 of the eject button 5. Recess 51
Is equivalent to forming a rectangular parallelepiped hole 53 extending downward from the upper surface, forming a wedge-shaped groove 54 on each of the four side surfaces of the hole 53, and forming a slope 55 between these wedge-shaped grooves 54. It has a unique shape. That is, the recess 51 has a cross-shaped horizontal cross section. This cross-shaped recess 51
Is also formed to have a tapered surface 51a. It should be noted that the wall surface of the recess 51 may not be a tapered surface but a parallel surface.

The cross-shaped groove 52 is formed following the wedge-shaped groove 54. Here, the width dimension of the cross groove 52 is, for example, 1 m.
m, the depth is 4 mm, and the wedge-shaped grooves 54 face each other.
When the angle between the bottom surfaces of the No. 1 and No. 2 is 50 degrees, it is possible to reliably receive the tips of the No. 1 and No. 2 cross-shaped screwdrivers according to JIS.

[0022]

As described above, according to the present invention,
By operating the eject button, it is possible to provide a socket connector capable of removing the loaded small circuit board, and moreover, a concave portion for engaging the tip of the operation jig is formed on the surface portion which is the operation portion of the eject button. Because
It is possible to securely engage the operation jig and press the eject button, and it is possible to prevent operation mistakes such as the operation jig slipping when the eject button is pressed and damaging peripheral devices near the socket connector. .

[Brief description of drawings]

FIG. 1 is a front view of a socket connector according to an embodiment of the present invention.

2A and 2B show an example of an eject button of the socket connector of FIG. 1, in which FIG. 2A is a plan view and FIG. 2B is a front view.

FIG. 3 is an explanatory diagram of a usage state of the eject button of FIG.

4A and 4B show another example of the eject button of the socket connector of FIG. 1, where FIG. 4A is a plan view and FIG. 4B is a front view.

5 shows still another example of the eject button of the socket connector of FIG. 1, (a) is a plan view, and (b) is a front view.

6A and 6B show still another example of the eject button of the socket connector of FIG. 1, in which FIG. 6A is a plan view, FIG. 6B is a front view, and FIG.

FIG. 7 is a front view showing a conventional socket connector.

[Explanation of symbols]

 1 Eject Button 3 Eject Button 4 Eject Button 5 Eject Button 8 Small Circuit Board 10 Upper Surface 11 Recess 11a Tapered Surface 30 Upper Surface 31 Recess 31a Tapered Surface 40 Upper Surface 41 Recess 41a Tapered Surface 50 Upper Surface 51 Recess 51a 10 Tapered Surface 52 V-shaped groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoichi Kurihara 4-6, Surugadai, Kanda, Chiyoda-ku, Tokyo Office Systems Division, Hitachi, Ltd.

Claims (5)

[Claims] 1. A connector provided with an eject button for detaching a connection object by a pushing operation, wherein a recess is formed on an operation surface of the eject button. 2. The socket connector according to claim 1, wherein a cross section orthogonal to the depth direction of the recess is circular. 3. The socket connector according to claim 1, wherein a cross section of the concave portion orthogonal to the depth direction is rectangular. 4. The socket connector according to claim 1, wherein the recess has a cross-shaped cross section orthogonal to the depth direction. 5. The socket connector according to claim 1, wherein the recess has a shape that converges toward an inner depth.