JP2005190871A - Electronic component connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic component connector having a spring pressing an electronic component to a cover opening and closing in rotation, and a lock mechanism easy to operate. <P>SOLUTION: A base body 1 fixed to a connecting object such as a circuit board has a shaft boss 13a and a lock boss 12a, and a cover 2 manufactured by processing an elastic metal plate has pressing springs 20a pressing the electronic component such as an LSI, and a long hole 21 and a locking groove 22a fitting into the shaft bosse 13a and the lock boss 12a of the base body 1 respectively. The cover is enabled to open and close in rotation by fitting the long hole 21 of the cover 2 into the shaft boss 13a. The pressing springs 20 of the cover 2 press the electronic component like LSI when the cover 2 is closed, at the same time, the locking groove 22a of the cover 2 fits into the lock bosse 12a when the cover is made to slide, and the cover is locked. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic component connector in which an electronic component such as a large-scale integrated circuit (LSI) is mounted on a connection target such as a circuit board, and an electrical connection is made by contacting the terminal of the electronic component and the terminal of the circuit board. Belongs to the technical field.

  LSIs that have recently been used in many applications such as personal computers, mobile phones, and many home electronic devices generally have a flat plate shape of several square centimeters and have several hundred terminals on the bottom. The size of the terminals and the distance between the terminals are extremely small, such as tens to hundreds of microns.

  An integrated circuit (IC) having a resistance element and a capacitor having two lead wires and several tens of terminals is generally electrically connected to the terminals of the circuit board and mechanically connected to the circuit board using soldering. Although it has been mounted, LSIs with a large number of minute terminals can be mounted on a circuit board by a method using a connector because of the difficulty in soldering the minute terminals and the ease of mounting and removal of electronic components. It has been broken.

  An LSI connector for mounting and connecting such an LSI to a printed circuit board applies pressure to the LSI to ensure that all of the numerous terminals are securely and stably connected to the terminals of the circuit board. The terminal is brought into contact, and a precise mechanism for applying pressure is required and has a complicated structure.

A conventional LSI connector includes a flat contact inserted between the LSI and the circuit board to ensure connection, an elastic cover that is attached to the upper surface of the LSI and presses and holds the LSI and the contact, and a lower surface of the circuit board. The structure is composed of a sheet material for insulation and cushioning to be attached to a metal and a metal holding member having screw holes at four corners, and four screws are inserted into the holding member from the four corners on the upper surface of the cover so as to (See, for example, Patent Document 1).
6-33382 (Fig. 3)

  As described above, in the conventional LSI connector, the cover, the LSI, the contact, and the circuit board are attached by tightening the four screws, and the LSI, the contact, and the circuit board are pressed by the elastic force of the cover to make contact between the terminals. If the tightening of the four screws is not uniform, the pressure on the LSI, contacts, and circuit board will be unbalanced, and some of the terminals will have uncertain and unstable contact between the terminals. Will occur.

  In addition, the conventional LSI connector requires four screws, a cover, a sheet material, and a holding member, and has a large number of parts, which increases the cost and requires a lot of labor for assembly. Furthermore, since the screw holes for attaching the four screws to the cover are necessary, the cover itself becomes large and takes up space on the circuit board, and the sheet material and the holding member are put on the lower surface of the circuit board. This space becomes a dead space where components and the like cannot be mounted.

  The problems to be solved by the present invention include uncertain and unstable electrical contact due to the use of a plurality of screws in the above-described conventional LSI connector, increased cost and assembly effort, and dead space. In order to solve the above problem, it is an object of the present invention to provide an electronic component connector that attaches an electronic component to a circuit board by applying pressure to the electronic component without using a screw to contact a terminal.

  A first configuration of the present invention is an electronic component connector for connecting an electronic component to a connection target via a connection member, and a base body fixed to the connection target, and a base body that can be opened and closed and rotated. The base body includes a first housing portion that is housed in a state where the connection member is positioned at the connection position of the connection target when the base body is fixed to the connection target, and an electron from the open portion when the cover is opened. The component has a second accommodating portion that is accommodated so as to be connected to the connection member, and locks the base body on both side surfaces orthogonal to the cover rotation axis when the cover is closed. The cover has a shaft boss that serves as a lock boss and a cover rotation shaft. The cover includes an upper surface portion and side portions on both sides of the rotation shaft, and the upper surface portion is accommodated in the second accommodating portion when the cover is closed. Pressing spring that presses electronic components The side boss is fitted with the shaft boss, and is fitted with a slot that can move parallel to the top surface with the cover closed, and the cover is fitted when the cover is closed. An electronic component connector characterized by having a lock groove for locking so that the cover is not opened when slid to.

  According to the second configuration of the present invention, when the shape of the lock groove of the cover closes the cover and the lock groove is fitted to the lock boss, and the cover is slid in the axial boss direction, the elastic reaction force of the pressing spring against the electronic component The electronic component connector according to the first configuration, wherein the cover is raised in the opening direction and has a recess into which the lock boss is relatively fitted.

  The electronic component connector according to the present invention includes a shaft body and a lock boss in a base body having a first housing portion for housing a connecting member such as a contact and a second housing portion for housing an electronic component such as an LSI. A cover made by processing an elastic metal plate has a pressure spring that applies pressure to the LSI, a long hole that fits into each of the shaft boss and lock boss of the base body, and a lock groove. The movable cover is held on the base body by the shaft boss, and when the cover is closed, the LSI is pressed by the cover pressing spring and at the same time the lock groove of the cover is fitted to the lock boss and locked. Unreliable and unstable electrical contact due to the use of screws, increased cost and assembly effort, and the problem of dead space has been eliminated, ensuring a secure connection A constant, inexpensive good operability structure is simple, there is an effect that more dead space does not occur.

  First, electronic component connectors are required to have a uniform pressure and little temperature change or change over time in order to ensure reliable and stable connection between the electronic component and the circuit board terminals. Second, the mechanism is simple. It is required to have good operability, low profile and small space for high density mounting and miniaturization of circuit boards.

  The electronic component connector of the present invention improves the drawbacks of the conventional electronic component connector consisting of a mechanism using a screw by applying pressure to the electronic component without using a screw and providing a lock mechanism. The best mode is as follows.

  The pressure spring is provided on the lower surface of the cover, but the cover is preferably made of an elastic metal plate, and the pressure spring is best provided integrally with the cover by punching the groove around the spring. The number and position of the pressure springs provided on the cover It is best to be able to press the electronic component evenly according to the size of the electronic component.

  Next, the number of lock grooves on the cover and the number of lock bosses on the base body is best to correspond to the position of the row of pressing springs, and the lock boss and the shaft boss are best to have a circular cross section. is there.

FIG. 1 is a three-side view showing the overall structure of an embodiment of an electronic component connector according to the present invention.
As shown in the top view of FIG. 1A, the top surface of the cover 2 has a plurality of pressing springs 20a and 20b integrally processed with the cover 2, and the side surface of the cover 2 has the side view of FIG. As shown, lock grooves 22a and 22b and a long hole 21 are provided, and a lock groove and a long hole are similarly provided on the opposite side surface (not shown) of the cover 2 as well.

  Inside the cover 2 is a base body 1, and lock bosses 12 a and 12 b and a shaft boss 13 a are attached to the side surface of the base body 1 as shown in FIG. The lock bosses 12c and 12d and the shaft boss 13b are similarly attached to the (not shown) as shown in the top view of FIG.

  A hold down 15b is attached to the rear side of the base body 1 as shown in FIG. 1C, and a hold down 15a is also provided on the front side as shown in the top view of FIG. The hold downs 15a and 15b are fixed to a connection target such as a printed board by soldering or screwing.

  FIG. 2 is a cross-sectional view showing the internal structure (A-A portion of FIG. 1) of the embodiment of the electronic component connector of the present invention, and the pressing connector 3 is attached to the first housing portion provided inside the base body 1. FIG. 6 is a diagram in which the LSI 4 is accommodated in the second accommodating portion, the cover 2 is closed, and the pressing springs 20 a and 20 b of the cover 2 press the pressing connector 3 and the LSI 4.

  In FIG. 2, the circuit board (not shown) to be connected is on the lower surface of the pressing connector 3, and the positioning pins 30a and 30b of the pressing connector 3 are fitted into the positioning holes provided in the circuit board. The terminals of the pressing connector and the terminals of the pressing connector are connected correspondingly accurately. Further, the hold downs 15a and 15b provided on the base body 1 are fixed to the circuit board by soldering or screwing, and the entire electronic component connector is mounted on the circuit board.

  3A and 3B are diagrams showing the operation flow of the embodiment of the electronic component connector of the present invention. FIG. 3A is a state where the cover 2 is opened, and FIG. 3B is a state before the cover 2 is closed and locked. State (c) is a view showing a state in which the cover 2 is locked to the base body 1.

  The state shown in FIG. 3A is a state where the cover 2 is opened with the shaft boss 13a of the base body 1 as an axis, and the LSI 4 shown in FIG. 2 is put into and taken out of the second accommodating portion in this state. be able to. After inserting the LSI 4, the cover 2 is closed in the direction of arrow E in (a), and the state shown in (b) is obtained.

3B is a state in which the cover 2 is closed and the pressing springs 20a and 20b press the LSI 4 as shown in FIG. 2, and the cover 2 is moved by the elastic reaction force of the pressing springs 20a and 20b. A force to open upward is generated. For this reason, when the force for pressing the cover 2 is removed, the cover 2 opens until the reaction force of the pressure springs 20a and 20b disappears. Therefore, in order to prevent this, the cover 2 is closed in the state where the cover 2 is closed. A force is applied in the direction F to move the cover 2 to the right so that the lock bosses 12a and 12b enter the laterally long portions of the lock grooves 22a and 22b as shown in FIG.
By doing so, even if the force for pressing the cover 2 is removed, the lock bosses 12a and 12b are applied to the lower portions of the horizontally long portions of the lock grooves 22a and 22b, so the cover 2 does not rise.

In the state shown in FIG. 3C, the pressing springs 20a and 20b press the pressing connector 3 and the LSI 4 as shown in FIG. 2, and the cover 2 is opened upward by the reaction force of the pressing springs 20a and 20b. The power to work is working. On the other hand, a recess 23 having a depth d is provided on the lower side of the horizontally long portion of the lock grooves 22a and 22b as shown in FIG.
Therefore, as shown in FIG. 4, the lock bosses 12a and 12b are completely accommodated in the bottom surface of the recess 23 and become locked. As a result, in order to move the cover 2 to the left, the lock boss requires a certain force to get over the right portion of the recess 23, and the lock is locked even if it is pushed to the left with a force smaller than that force. We make sure that it does not come off.
As shown in FIG. 4, the lock groove 23a has a wide opening and a tapered portion 24, which are intended to make it easier for the lock boss to enter the lock groove during the procedure of closing the cover 2. It is.

  When the cover 2 is unlocked and the cover 2 is opened from the locked state, as shown in FIG. The lock is released and the state (b) is established, and the cover 2 can be completely opened by lifting the cover 2 in the direction opposite to the arrow E in (a).

  FIG. 5 is a detailed sectional view showing the structure of the contact and insulator of the pressing connector of the embodiment of the electronic component connector of the present invention.

  As shown in FIG. 2, the pressing connector 3 connects the terminals of the LSI 4 and the terminals of the circuit board, and is connected by pressing the pressing springs 20a and 20b. Each terminal of LSI and circuit board is made of a metal with good electrical continuity, and the contact surface of each terminal is difficult to make the height completely uniform in their manufacture, and has a slight unevenness. It has become.

  When the LSI is pressed to make contact with all the terminals of the LSI and the terminals of the circuit board, the contact surfaces of these terminals are not uniform, and all the terminals do not contact evenly. A defective terminal comes out. In order to cope with this, a method is generally employed in which a pressing connector using an elastic member is interposed between the LSI and the circuit board, and the pressing is applied to the pressing connector.

  FIG. 5A is composed of an elastic insulator 31 made of an elastic insulator such as an elastomer and a deformable foil contact 32. FIG. 5B is a hard insulator. The hard insulator 33 is made up of an elastic contact 34 having elasticity.

  By applying pressure to the LSI via a pressure connector using such an elastic member, the contact between the LSI terminal and the contact of the pressure connector and between the contact of the pressure connector and the terminal of the circuit board is ensured. Therefore, the electrical continuity between the LSI terminal and the circuit board terminal can be made uniform and good.

  In the drawings and explanations of the above embodiments, the number of each of the pressing spring, the lock boss, the lock groove, and the hold down is four. However, these numbers are appropriate numbers depending on the size of the LSI or electronic component. However, the number is not limited to four.

It is a 3rd view which shows the whole structure of the Example of the electronic component connector of this invention. It is sectional drawing which shows the internal structure (AA part of FIG. 1) of the Example of the electronic component connector of this invention. It is a figure which shows the flow of operation of the Example of the electronic component connector of this invention. It is detail drawing which shows the structure of the lock groove | channel of the Example of the electronic component connector of this invention. It is detailed sectional drawing which shows the structure of the contact and insulator of the press connector of the Example of the electronic component connector of this invention.

Explanation of symbols

1 Base body 2 Cover 3 Press connector 4 LSI
12a Lock boss 12b Lock boss 12c Lock boss 12d Lock boss 13a Shaft boss 13b Shaft boss 15a Hold down 15b Hold down 20a Press spring 20b Press spring 21 Long hole 22a Lock groove 22b Lock groove 23 Concave 24 Taper part 30a Positioning pin 30b Positioning pin 30c Positioning pin 30c Elastic insulator 32 Foil-shaped contact 33 Hard insulator 34 Elastic contact

Claims (2)

  An electronic component connector for connecting an electronic component to a connection target via a connection member, comprising a base body fixed to the connection target, and a cover that is held by the base body so as to be capable of opening and closing rotation. The first housing part is housed in a state where the connection member is positioned at the connection position of the connection object when fixed to the connection object, and the electronic component is connected to the connection member from the open part when the cover is opened. And a shaft that serves as a cover rotation shaft and a lock boss for locking the cover when the cover is closed on both side surfaces orthogonal to the cover rotation shaft. The cover has a boss, and the cover includes an upper surface portion and side portions on both sides of the rotation shaft. The upper surface portion presses the electronic component housed in the second housing portion when the cover is closed. The side part has a front When the shaft boss is fitted and the cover is closed, the long hole that can move parallel to the top surface is fitted with the slot when the cover is closed, and when the cover is slid in the axial boss direction, the cover is An electronic component connector having a lock groove for locking so as not to open. When the cover is closed and the lock groove is fitted to the lock boss after the cover is closed, the cover is lifted in the opening direction by the elastic reaction force of the pressure spring against the electronic components. The electronic component connector according to claim 1, further comprising a recess into which the lock boss is fitted.

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