JPS6269475A - Socket slide mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a socket for attaching and detaching components having a large number of terminals, such as IC chips, on a printed wiring board, etc. This invention relates to an operating mechanism for sliding when the socket is a slide type socket that can reduce the insertion force of the above-mentioned components.

(Prior art) It is common practice to attach IC chips, etc. to printed wiring boards, etc., but in order to facilitate the replacement of IC chips, etc., In this case, a socket that accepts multiple pin terminals such as an IC chip is installed on the printed wiring board, etc., and the IC chip, etc. can be detachably attached to this socket. Make sure to install it.

However, many IC chips, etc. have a large number of pin terminals, and if the chips were simply inserted into sockets, a certain amount of contact pressure would be required on the terminals to ensure electrical connection. There is a problem that the insertion force for IC chips and the like becomes extremely large, making installation difficult.

Therefore, the receiving part for receiving pin terminals of IC chips, etc. inside the socket is made into a tapered shape extending in a direction perpendicular to the insertion direction of the IC chip, etc., and when inserting an IC chip, etc., the pin terminals are inserted into the receiving part. Insert the main pin terminal into the widened part of the tapered part of the receiving part without making contact with the receiving part, and move the main pin terminal along the tapered part of the receiving part in the direction perpendicular to the insertion direction in the direction where the tapered part becomes narrower. Various types of devices have been proposed in which the receiving portion and each pin terminal are brought into contact by being press-fitted into a predetermined position (for example, Japanese Patent Laid-Open No. 59-388
No. 1, Utility Model No. 155784, Utility Model No. 56-10
No. 1657, Utility Model Publication No. 125844, 1984, etc.).

In this way, even if there are a large number of pin terminals, the insertion force will be almost zero, and the problem of difficult insertion will not occur, but the mechanism for sliding the pin terminals after inserting them into the socket The problem is that a space is required for this mechanism. This type of slide mechanism includes one that uses the lever as a lever to slide by rotating the lever approximately 90', and one that uses a cam mechanism to perform the slide, but in both cases, the lever or There is a problem in that a space is required to accommodate the cam mechanism.

Particularly in today's world where parts are attached to printed wiring boards and the like more and more frequently, it is desirable to make the space required for each part as small as possible, and it is also desirable to make the accommodation space as small as possible.

For this reason, the present applicant formed a fulcrum groove in the housing body, bored a slide hole opposite to the fulcrum groove in the housing cover, and installed an operating lever that could be detachably attached to the fulcrum groove through the slide hole. Insert one end of the operating lever into the housing cover, centering the one end in the fulcrum groove.
! ! ! We proposed a socket slide mechanism that allows the housing cover to slide by rotating it along the direction of movement (Japanese Patent Application No. 60-54244).
.

According to the above proposal, since the operating lever is removable,
By removing the operating lever after installing the IC chip, etc., the space occupied by the slide operating mechanism can be reduced.
This allows for higher density placement of electrical components on the board, but since the housing cover can be moved freely relative to the housing body, if the operating lever is removed, the housing cover will be exposed to external vibrations, etc. There is a risk of it sliding. For this reason, in the above proposal, when the operating lever is removed, a retention plug is inserted that passes through the slide hole and enters the fulcrum groove to prevent the housing cover from sliding, but the insertion of the retention plug is necessary. There is a problem that the work is cumbersome.

(Object of the Invention) In view of these problems, the present invention provides a slide type socket in which a control lever for operating a slide can be freely attached and detached, and when the lever is removed after a slide operation using the control lever, the housing cover can be left as it is. The object of the present invention is to provide a socket slide mechanism that can be held in the position shown in FIG.

(Structure of the Invention) The socket slide mechanism of the present invention includes a housing main body having a plurality of contacts, a housing cover slidably attached to the housing main body, and a fulcrum groove of the housing main body through a sliding hole of the cover. It consists of a removable operating lever that rotates around one end inserted into the housing and slides the housing cover.By rotating the operating lever, the housing cover can be moved between the pin terminal insertion position and the pin terminal. In the clamping position, the engagement arm of the housing cover engages with the engagement protrusion of the housing body to prevent the housing cover from sliding. When the housing cover is held in the clamping position and the operating lever is rotated to slide the housing cover from the clamping position to the insertion position, the unlocking portion of the operating lever is brought into contact with the engagement arm to flex this arm and the engagement arm and This feature is characterized in that the engagement with the engagement protrusion is released.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1A to 1D are perspective views showing the assembled state and each component of a socket equipped with a slide operation mechanism according to the present invention, and FIG. 2 shows the socket 1 along arrow A in FIG. FIG. 3 is a cross-sectional view taken along line A. This socket 1 consists of a rectangular flat housing body 20 and a housing cover 10 that is slidably attached to the housing body 20 in the direction of arrow X in the figure. A plurality of terminal holding holes 15, 15. into which a plurality of pin terminals are inserted. ...15 are formed in a matrix. The housing cover 10 can be attached to the housing body 20 by attaching the hook 1 formed on the side of the cover 13 to the locking protrusion 23 on the side of the body 20.
This is done by locking 3. Furthermore, on the surface of the housing body 20 facing the cover 10, there are a plurality of contact mounting holes 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25. . . 25 are formed, and each contact mounting hole 25, 25 . . . 25 includes contacts 30, 30 . . . 30 is attached with the contact leg 31 protruding downward. Note that this leg 31 is connected to a printed wiring board or the like.

Furthermore, two slide holes 11.11 are formed at the rear end of the cover 10 in the figure, and extend parallel to the side edges, and the slide holes 11.11 are formed at the rear end of the housing body 20.
Two supporting points 121.21 are formed which are substantially opposite to each other. The slide hole 11 and the fulcrum groove 21 are for sliding the cover 10 with respect to the housing body 20 in the direction of the arrow X in FIG. 1A, so specifically, they have a bifurcated shape as shown in FIG. 1B. The lower end 41 of the operating lever 40 is inserted into the fulcrum groove 21 through the slide hole 11, and the operating lever 40 is rotated about the lower end 41 within the fulcrum groove 21 to slide the cover 10.

On the other hand, between the two slide holes 11 and 11, the side end of the cover 10 is cut into a letter shape as shown in the figure to form an engagement arm 12.

This cover 10 is made of an elastic material such as resin, and the tip of the engagement arm 12 can be bent up and down. Roughly speaking, an engagement protrusion 22 protruding upward is provided between the two fulcrum grooves 21 21 of the main body 20, and an engagement protrusion 22 is provided between the bifurcated lower ends 41 and 41 of the operating lever 40 as will be described later. A lock release portion 42 is formed to abut against and flex the coupling arm 12.

The operation of the socket slide operation mechanism constructed as above will be explained below.

First, as shown in FIG. 4A, which is an enlarged view of the right side of the cross section taken along the arrow A-A, the cover 10 is moved to the right in the figure with respect to the housing body 20 (this position is referred to as the insertion position). Next, in this state, the plurality of pin terminals 3 of the tC chip 2 are respectively inserted into the main body 20 through the plurality of terminal holding holes 15 of the cover 10.
Contact 3 attached to contact attachment hole 25 of
Insert toward 0. In this state, the cover 10 is
0, the terminal holding hole 15 also faces the right side of the contact mounting hole 25, as shown in FIG. 4B, which is a cross-sectional view taken along arrow B-8 in FIG. 4A. , the tapered terminal holding pieces 32a, 32 of the contact 30
The pin terminal 3 is inserted into the widened space b. Therefore, the pin terminal 3 is not in contact with the contact 30,
The insertion force can be made almost zero. In addition, at this time, contact mounting is performed using the contact 3 inserted into the hole 25.
0, the U-shaped portion 34 is attached to the side wall of the hole 25 and the stabilizer 33a.

33b enters into the vertical grooves 25a, 25b, and the contact 30 is held in the mounting hole 25 without wobbling.

Next, the operating lever 40 is rotated in the sliding direction (arrow Y direction) about the lower end 41 within the fulcrum 21, and the cover 10 is moved to the left with respect to the main body 20, as shown in FIG. 5A. In this way, the pin terminal 3 inserted into the terminal holding hole 15 of the cover 10 also moves to the left, and as shown in FIG. .

The terminal clamping piece 3 is press-fitted into the narrowed part of 32b.
2a and 32b to ensure electrical connection between the pin terminal 3 and the contact 30 (this position is referred to as a clamping position).

The positional relationship between the engagement arm 12 of the cover 10 and the engagement protrusion 22 of the main body 20 when the cover 10 is slid by rotating the operating lever 40 as described above is indicated by the arrow D- in FIG. 1A.
This will be explained with reference to FIGS. 6A to 6C, which are shown cut along the line D. In the insertion position where the cover 10 is moved to the right in the figure with respect to the main body 20, the engagement arm 12 is in a state resting on the engagement protrusion 22;
2, it is lifted upward and is in a bent state. Next, when the operation lever 40 is rotated in the Y direction about the lower end 41 in the fulcrum groove 21 and the cover 10 is slid to the left, the engagement arm 12 moves into the engagement protrusion 22 as shown in FIG. 6B.
When the upper part is slid to the left, the upper surface of the engaging protrusion 22 is removed from the upper surface of the engaging protrusion 22 in the clamping position as shown in FIG.
Move up a. At this point, the engagement arm 12, which had been bent upward, returns to its original shape and rests on the stepped portion 22a, whereby the engagement arm 12 engages with the engagement protrusion 22, and in this state, the cover 10 is moved to the right vJ. be prevented from doing so.

Thereafter, when the operating lever 40 is pulled upward, the installation of the IC chip, etc. is completed.

In this case, when removing the IC chip, etc., it is necessary to disengage the engagement arm 12 and the engagement protrusion 22 and move the cover 10 to the right. This will be explained using figures. The engaging protrusion 22 and the engaging arm 12 are placed on the stepped portion 22a of the engaging protrusion 22.
First, insert the lower end 41 of the operating lever 40 into the fulcrum groove 21 through the slide hole 11 into the socket in the clamping position where the operating lever 40 is engaged with the lower end 41.
Rotate in 7 directions around . Along with this rotation, the seventh
As shown in FIG. disengage. When the operation lever 40 is roughly rotated, the lock release portion 4 is released as shown in FIGS. 7C to 7D.
2 moves the cover 10 to the right while lifting the engagement arm 12, and moves the engagement arm 12 onto the engagement protrusion 22 fi! let it be placed

In the above embodiment, an example was shown in which the pin terminal of an IC chip is attached, but the slide operation mechanism of the present invention can also be used to connect other electrical connections for the purpose of high density (e.g., board-to-board connection, board-to-cable connection, etc.). It can also be used for connections such as

(Effect of the invention) As explained above, according to the invention, in order to reduce the insertion force, the housing cover is J'
,! The housing cover can be slid by a removable operating lever in the socket j, which is moved to attach an IC chip, etc., and in the clamping position, the housing cover's engagement arm and The housing cover is held in this position by engaging the engagement protrusion of the Haubang main body, and the operating lever is provided with a lock release part so that the engagement can be released by the lock release part. By attaching and detaching the operation lever, the space occupied by the slide operation mechanism in the socket is reduced, which not only allows for higher density arrangement of electrical components on the board, but also enables
Even if the control lever with the chip, etc. attached is removed, the housing cover is held in the clamping position by the engagement of the engagement arm and the engagement protrusion, making it easier to attach the IC chip, etc. .

[Brief explanation of drawings]

Figures 1A to 1D are perspective views showing an example of the socket having the slide operation mechanism of the present invention in an assembled state and each component. Figure 2 shows the socket in the direction of arrow A-A in Figure 1A. FIG. 4A and FIG. 5A are cross-sectional views showing the slide operation mechanism of the socket in an enlarged manner; 4B and 5B are cross-sectional views taken along arrows B-B and C-C in FIGS. 4A and 5A,
6C and 7A to 7D are cross-sectional views of the socket taken along the arrow DD in FIG. 1A, showing the movement of the housing cover relative to the housing body as the operating lever is operated. It is a diagram. 10... Housing cover 11... Slide hole 12... Engagement arm 20
... Housing body 21 ... Fulcrum groove 22 ... Engagement protrusion 30 ... Contact 40 ... Operation lever 42 ... Lock release part 1A [! 1 Old Newspaper

Claims (1)

[Scope of Claims] A housing body having a plurality of contacts, a housing cover slidably attached to the housing body, and one end formed in the housing body through a slide hole drilled in the housing cover. A socket slide mechanism comprising a removable operating lever that is inserted into a fulcrum groove in which the operating lever is rotated about the one end and slides the housing cover relative to the housing main body. Due to the rotation of the above housing cover,
an insertion position where a plurality of pin terminals can be inserted from the outside into the side space of the contact through the plurality of terminal holding holes formed in the cover, perpendicular to the sliding direction; and an insertion position into the side space. the plurality of pin terminals are elastically clamped by the contacts, and in the clamping position, the engagement protrusions formed on the housing body and the housing cover a flexible engagement arm that engages with the housing cover to hold the housing cover in the clamping position; and rotating the operating lever to move the housing cover from the clamping position to the insertion position. A socket slide characterized in that a lock release portion is formed that contacts the engagement arm to deflect the engagement arm and release the engagement between the engagement arm and the engagement protrusion when the socket slide is slid. mechanism.