JP2008277104A - Socket for electrical component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of components as well as to save a space as a structure of a lever is simplified for moving a slide plate to make it come in and out of contact with a connection terminal section of an electric component by displacing a contact pin. <P>SOLUTION: The lever 25 arranged between a socket body 21 of a socket 20 for an electric component and a lower surface of a socket cover 23 and making the slide plate 24 descend by transmitting descending operation force of the socket cover 23 to the slide plate 24 is formed by having an engagement section 31 engaged with the socket body 21 at its one end, a contact section 32 in contact with the lower surface of the socket cover 23 at the other end, and a pushing section 33 for pushing down the slide plate 24 between the engagement section 31 and the contact section 32. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electrical component socket that detachably accommodates an electrical component such as an IC package and connects to a circuit board, and more specifically, a plurality of contact pins arranged in the socket body are displaced to connect the electrical component. The present invention relates to an electrical component socket that can save space and reduce the number of components by simplifying the structure of a lever for moving a slide plate that is separated from and contacting a terminal portion.

  As shown in FIG. 6, a conventional socket for electrical components of this type, particularly an open-top type socket, includes a socket body 2 having an accommodating portion for accommodating an IC package 1 as an electrical component, and an inside of the socket body 2 A plurality of contact pins 3 that can be separated from and connected to the connection terminal portion of the IC package 1, a socket cover 4 that is mounted on the upper portion of the socket body 2 so as to be movable up and down, and an upper and lower portion within the socket body 2. A slide plate 5 that is movably disposed to displace the contact pin 3 to move away from the connection terminal portion of the IC package 1, and is provided between the socket body 2 and the lower surface of the socket cover 4. And a lever 6 that lowers the slide plate 5 by transmitting the lowering operation force to the slide plate 5.

  In the IC package 1, a large number of solder balls as connection terminal portions protrude from the lower surface of the package body, and are arranged in a matrix in the vertical direction and the horizontal direction. Further, the contact pin 3 has a spring property, and a plate material excellent in conductivity is formed by press working. Further, the slide plate 5 has a planar shape, for example, a rectangular shape. Contact pins are inserted into a large number of pin holes formed in a region excluding a part such as the peripheral portion, and the slide plate 5 Each contact pin 3 is displaced by the vertical movement of 5.

  Specifically, the contact pin 3 is formed with a pair of elastic pieces in the upper half and a solder tail portion in the lower half. The pair of elastic pieces are formed so as to face each other by bending the base portion on the lower end side into a substantially U shape. Further, at the upper end (tip portion) of these elastic pieces, a contact part is formed so as to be in contact with and separated from the side surface part of the solder ball of the IC package 1, and the solder ball is held between these contact parts. . Further, the pair of elastic pieces of the contact pin 3 is formed with a bent portion that is bent in a generally U shape so as to protrude toward the other side, thereby crossing each other, The curved portion is configured to be pressed by a cam portion provided on the slide plate 5 described later to open both contact portions.

  On the other hand, the slide plate 5 is disposed on the socket body 2 so as to be movable up and down, and is urged upward by a spring. A pair of levers 6 for moving the slide plate 5 up and down (one on the drawing is omitted) are provided. The lever 6 is pivotally attached to the socket body 2 by a pivot shaft 7 and to the slide plate 5 by an action shaft 8, and has an upper end slidably in contact with the cam surface 9 of the socket cover 4. Accordingly, when the socket cover 4 is lowered, the slide plate 5 is lowered by being pushed by the cam surface 9 and pivoting the lever 6 about the pivot shaft 7 counterclockwise in FIG. It has become. As shown in FIG. 6, the slide plate 5 is formed with cam portions located between the contact pins 3, and the sliding surfaces formed on both sides of the cam portions are contact pins 3 adjacent to both sides. The bent portion of the elastic piece is pressed. That is, the one cam portion can press the bent portions of the elastic pieces of the contact pins 3 on both sides, and both bent portions of the pair of elastic pieces of the contact pin 3 The contact portions are configured to open to each other when pressed in a direction approaching each other by a pair of cam portions disposed on both sides of the pin 3.

With this configuration, in order to house the IC package 1 in the socket body 2 and connect it to the socket for electrical components, the socket cover 4 mounted on the upper part of the socket body 2 is lowered and formed at the four corners thereof. The upper end of the lever 6 is pressed by the cam surface 9, the lever 6 is rotated about the rotation shaft 7, and the slide plate 5 is lowered via the action shaft 8 accordingly. As a result, the contact pin 3 is displaced by the lowering of the slide plate 5, and the contact portion at the tip of the contact pin 3 is opened and connected to the connection terminal portion of the electrical component (for example, see Patent Document 1). .
JP 2000-21530 A

  However, in the conventional socket for electric parts, a rotating shaft 7 for rotating the lever 6 and a working shaft 8 for transmitting a downward operating force applied to the socket cover 4 to the slide plate 5. Therefore, a space for installing these shafts and a space for providing a fitting hole that fits these shafts are required. Moreover, since the rotating shaft 7 and the action shaft 8 are required, the number of parts is increased and the cost is increased. Furthermore, in the manufacturing process of the socket body 2 and the slide plate 5 and the like, a slide mold mechanism is required for resin molding of the fitting hole, so that the cost is increased and the structure of the slide mold mechanism is complicated, so that the quality is increased. It was difficult to stabilize. Furthermore, these have also reduced the degree of freedom in the design of sockets for electrical components.

  Therefore, the present invention addresses such a problem and provides a lever for moving a slide plate that displaces a plurality of contact pins arranged in the socket body and separates and contacts a connection terminal portion of an electrical component. An object of the present invention is to provide an electrical component socket that can save space and reduce the number of components by simplifying the structure.

  In order to achieve the above object, an electrical component socket according to the present invention is provided with a socket body having a housing portion for housing an electrical component, and can be attached to and detached from a connection terminal portion of the electrical component disposed in the socket body. A plurality of contact pins, a socket cover mounted on the upper portion of the socket body so as to be movable up and down, and a contact terminal portion of the electrical component disposed in the socket body so as to be movable up and down to displace the contact pins. An electrical component comprising: a slide plate that is brought into and out of contact with the socket body; and a lever that is provided between the socket body and the lower surface of the socket cover and transmits the force of the lowering operation of the socket cover to the slide plate to lower the slide plate In the socket, the lever has an engaging portion that engages with the socket body at one end thereof, and the socket at the other end. It has a contact portion in contact with the lower surface of the cover, and is formed with a pressing portion for pressing the slide plate downwardly between the engaging portion and the abutting portion.

  With such a configuration, the one end portion has an engaging portion that engages with the socket body, and the other end portion has an abutting portion that abuts the lower surface of the socket cover. By means of a lever formed with a pressing part that presses the slide plate downward, the force of the lowering operation of the socket cover is transmitted to the slide plate to lower the slide plate.

  Further, the engaging portion of the lever engages with a hook portion formed on the inner surface of the socket body. Thereby, the lever engages with a hook portion formed on the inner surface of the socket body by an engaging portion of the lever.

  Furthermore, the contact portion of the lever is in sliding contact with an inclined surface formed on the lower surface of the socket cover. As a result, the lever is brought into sliding contact with the inclined surface formed on the lower surface of the socket cover by the contact portion of the lever.

  Still further, the lever is disposed in a space surrounded by the socket body, the socket cover, and the slide plate. Accordingly, the lever disposed in the space surrounded by the socket body, the socket cover, and the slide plate transmits the force of the lowering operation of the socket cover to the slide plate to lower the slide plate.

  According to the first aspect of the present invention, the one end portion has the engaging portion that engages with the socket main body, and the other end portion has the abutting portion that contacts the lower surface of the socket cover, and contacts the engaging portion. By means of a lever formed with a pressing part that presses the slide plate downward between the two parts, the force of the lowering operation of the socket cover can be transmitted to the slide plate and the slide plate can be lowered. Thereby, the lever can be rotated around the engaging portion, and the slide plate can be pressed by the pressing portion. Therefore, the lever can be rotated without using a conventional rotating shaft, and the slide plate can be pressed by the lever without using a conventional operating shaft. Therefore, it is not necessary to provide a rotating shaft and an action shaft, and each component can be reduced in size. Further, since there is no need to use a slide mold mechanism, the quality can be stabilized and the cost can be reduced. Furthermore, the number of parts can be reduced, and the cost can be further reduced. Furthermore, since the slide mold mechanism is not required and the number of levers and the degree of freedom of arrangement are increased, the degree of freedom in designing the electrical component socket can be increased.

  According to the second aspect of the present invention, the lever can be engaged with the hook portion formed on the inner surface of the socket body by the engaging portion of the lever. Therefore, the lever can be engaged with the socket body with a simple structure.

  Furthermore, according to the invention which concerns on Claim 3, a lever can be slidably contacted with the inclined surface formed in the lower surface of a socket cover by the contact part which this lever has. Therefore, since the lever is pressed downward while sliding on the inclined surface, the lowering amount of the lever contact portion and the pressing portion can be changed with respect to the lowering amount of the socket cover.

  According to the fourth aspect of the invention, the lever disposed in the space surrounded by the socket main body, the socket cover, and the slide plate is used to transmit the force of the socket cover lowering operation to the slide plate to lower the slide plate. be able to. Therefore, the lever can be fixed using a gap in the electrical component socket without requiring a special fixing structure.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a view showing an embodiment of an electrical component socket according to the present invention. The electrical component socket 20 detachably accommodates an electrical component such as an IC package and is connected to a circuit board. The socket 20 is, for example, an open top type socket, and includes a socket body 21, a contact pin 22, and a socket cover 23. And a slide plate 24 and a lever 25.

  First, in an IC package as an electrical component, a plurality of solder balls as connection terminal portions protrude from the lower surface of a rectangular package body in which a device such as an IC (integrated circuit) is encapsulated. And arranged in a matrix.

  The socket body 21 is mounted on the upper surface of a circuit board (not shown), and accommodates and fixes an electrical component (not shown) inside to be joined to the contact pin 22. The socket body 21 includes a receiving portion 27 and a latch 28. . The accommodating portion 27 is for positioning and accommodating the electrical component, and is formed in a flat shape substantially in the middle of the socket body 21 as shown in FIG. The latch 28 is for holding and fixing the electrical component accommodated in the accommodating portion 27 from above. A pair is provided before and after the accommodating portion 27.

  A plurality of contact pins 22 are disposed in the socket body 21 as shown in FIG. The contact pin 22 electrically connects the connection terminal portion of the electrical component and the circuit board. The contact pin 22 has the same shape as the conventionally known contact pin 3 shown in FIG. 2 are formed by combining two long and narrow plate members, with the tip substantially aligned with the upper surface of the accommodating portion 27 and the lower end protruding from the bottom surface of the socket body 21 by a predetermined amount. Then, the contact portion at the tip of the slide plate 24 is opened and closed by an ascending and descending operation of the slide plate 24, which will be described later, so that it can be separated from and connected to the connection terminal portion of the electrical component.

  A socket cover 23 is mounted on the upper portion of the socket body 21 so as to be movable up and down. The socket cover 23 is an operation member for sandwiching and fixing the connection terminal portion of the electrical component housed in the housing portion 27 of the socket body 21 by the contact portion of the contact pin 22 by its vertical movement. As shown in FIG. 2, the upper part is opened so that an electrical component can be inserted, and is urged upward by a spring 29 via a slide plate 24 and a lever 25. The socket body 21, the socket cover 23, and the slide plate 24 are made of an insulating resin material.

  A slide plate 24 is disposed in the socket body 21 so as to be movable up and down. Like the conventional electrical component socket shown in FIG. 6, the slide plate 24 displaces the contact pin 22 by moving up and down to separate the contact portion at the tip from the connection terminal portion of the electrical component. As shown in FIG. 3, for example, a rectangular plate-like body having a thickness of about 3 mm is formed with convex portions 26 at which the lever 25 and the spring 29 (see FIG. 2) abut on the four corners. A large number of pin holes 30 are formed except for the peripheral portion and the central portion in the longitudinal direction, and one contact pin 22 is inserted into each of the many pin holes 30. As shown in FIG. 2, the slide plate 24 is urged upward by a spring 29 interposed on the bottom surface thereof. In a state where the slide plate 24 is disposed in the socket body 21 so as to be movable up and down, a socket cover 23 is mounted on the upper portion thereof so as to be movable up and down.

  A lever 25 is disposed between the socket body 21 and the lower surface of the socket cover 23. The lever 25 transmits the force of the lowering operation of the socket cover 23 to the slide plate 24 and lowers the slide plate 24. The lever 25 is pressed downward by the lowering operation of the socket cover 23 and pushed upward by the spring 29. Therefore, it can be rotated in the vertical direction.

  Here, in the present invention, as shown in FIGS. 2 and 4, the lever 25 has an engaging portion 31 that engages with the socket main body 21 at one end portion, and the lower end of the socket cover 23 at the other end portion. The contact portion 32 is in contact with the engagement portion 31 and the contact portion 32, and a pressing portion 33 that presses the slide plate 24 downward is formed. In the case of this embodiment, the lever 25 is arranged at the four corners of the electrical component socket 20 and is formed in a substantially square shape by a metal piece having a thickness of about 0.5 mm, a length of 6 mm and a width of about 1 mm, for example. The engaging portion 31 is provided at the end of the lower side 34 of the square shape, and is formed in a pointed shape that protrudes in the lateral direction with the tip facing outward. The abutting portion 32 is provided at an end portion of the upper side 35 having a square shape, and is formed so as to protrude in a semicircular shape with its tip facing upward. Furthermore, the pressing part 33 is provided in the base part of the upper side 35 of the square shape, and is formed in a curved shape that gently bulges downward.

  Further, as shown in FIG. 1, the engaging portion 31 of the lever 25 is engaged with a hooking portion 36 formed on the inner surface of the socket main body 21. In the case of this embodiment, the hook portion 36 is formed by providing a step portion on the vertical surface 37 of the inner surface of the socket body 21, and the engaging portion 31 of the lever 25 is engaged with the hook portion 36. .

  Further, the contact portion 32 of the lever 25 is in sliding contact with an inclined surface 39 formed on the lower surface of the socket cover 23. In the case of this embodiment, the inclined surface 39 is inclined upward, and in the downward pressing operation of the lever 25 by the socket cover 23, the abutting portion 32 and the pressing portion of the lever 25 are smaller than the downward movement amount of the socket cover 23. The lowering amount of 33 is formed to be small, and by using the action of the lever, the pressing force of the socket cover 23 is reduced and a smooth pressing operation is realized.

  Furthermore, the lever 25 is disposed in a space 40 surrounded by the socket body 21, the socket cover 23 and the slide plate 24. As a result, the lever 25 is connected to the hook portion 36 of the socket body 21 by the engaging portion 31 on the upper side, the slide plate 24 by the pressing portion 33 on the lower side, and the socket body 21 or the slide plate 24 by the lower side 34 on the left or right side. The front surface and the rear surface are arranged without being disengaged by being restricted by the socket main body 21, and only a rotation operation around the engaging portion 31 is allowed.

Next, the usage state of the thus configured socket for electrical parts will be described.
First, the electrical component socket 20 is mounted on a circuit board (not shown) on its lower surface, so that the contact pins 22 and the circuit board shown in FIG. 1 are electrically connected. In order to accommodate the electrical component in the electrical component socket 20 in this state, first, the socket cover 23 is pressed downward. As a result, the contact portion 32 of the lever 25 is pressed downward by the inclined surface 39 of the socket cover 23, and the lever 25 rotates around the engaging portion 31 as shown in FIGS. The part 33 presses the slide plate 24 from above and lowers it. Along with this, the slide plate 24 displaces the contact pin 22 and the contact portion at the tip thereof is opened. At the same time, in conjunction with this, the latch 28 of the socket body 21 is opened to the release position. Next, the electrical component is accommodated in the accommodating portion 27 of the socket body 21. Thereby, the connection terminal part of an electrical component enters in the contact part opened in the upper end part of the contact pin 22 (refer FIG. 1) in a non-contact state. Next, the downward pressing force applied to the socket cover 23 is released. As a result, the slide plate 24 is raised by the spring 29, and the contact portion at the upper end of the contact pin 22 (see FIG. 1) is closed accordingly, and the connection terminal portion of the electrical component is held and electrically connected. Prior to this, the latch 28 of the socket body 21 is closed, and the electric parts are pressed and fixed from above.

  Next, in order to remove the electrical component from the electrical component socket 20, the socket cover 23 is first pushed down in the same manner as described above. Accordingly, the contact portion of the contact pin 22 is opened and the latch 28 is opened to the release position. As a result, the connection between the electrical component and the contact pin 22 is released and the fixing by the latch 28 is released, and the electrical component can be removed from the electrical component socket 20.

  In this way, the lever 25 is rotated by the engaging portion 31 without using the conventional rotating shaft, and the slide plate 24 is pressed by the lever 25 without using the conventional operating shaft. Since it can be performed by the portion 33, there is no need to provide a rotating shaft and a working shaft, and the conventional lever 6 is mounted on the outside of the socket body 2 or the slide plate 5 so that the outer shape does not increase. Each component can be miniaturized. In addition, since it is not necessary to use a slide mold mechanism in the resin molding manufacturing process of the socket body 21 and the slide plate 24, the quality can be stabilized. Furthermore, the lever 25 can be fixed using a gap in the electrical component socket 20 without requiring a special fixing structure. For this reason, the number of levers 25 and the degree of freedom of arrangement increase, and the slide mold mechanism becomes unnecessary, so that the degree of freedom in designing the electrical component socket can be increased.

  In the above description, the shape of the lever 25 is a substantially square shape, but the present invention is not limited to this, and other shapes such as an L-shape or an S-shape may be used depending on the shape of the installation space. You may change to Moreover, although the material of the lever 25 is made of metal, it may be made of resin, for example. Furthermore, although the thickness of the lever 25 is about 0.5 mm, it may be 1 mm, 1.5 mm, or the like. Furthermore, the length and width of the lever 25 are about 6 mm and 1 mm, respectively, but may be 10 mm and 2 mm, for example. In addition, the lever 25 is arranged at the four corners of the electrical component socket 20. However, the lever 25 is arranged only at the diagonal corner, or at the center of the front and rear surfaces in addition to the four corners. The arrangement location and number may be changed according to the above. Furthermore, the inclination of the inclined surface 39 with which the contact portion 32 of the lever 25 contacts is formed upward so that the lowering amount of the contact portion 32 and the pressing portion 33 of the lever 25 is smaller than the lowering amount of the socket cover 23. On the contrary, it may be formed downward so that the lowering amount of the contact part 32 and the pressing part 33 is increased, or the lowering amount is equal for the contact part by not providing an inclination, You may make it become substantially equal about a press part.

It is the front view which carried out the partial cross section which shows embodiment of the socket for electrical components by this invention. It is the perspective view which carried out the partial cross section of the said socket for electrical components. It is a perspective view which shows the slide plate of the said socket for electrical components. It is a front view which shows the lever of the said socket for electrical components. It is a perspective view which shows the state which pushed down the socket cover of the said socket for electrical components. It is the front view which carried out the partial cross section which shows the socket for electrical components by a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 ... Electrical component socket 21 ... Socket main body 22 ... Contact pin 23 ... Socket cover 24 ... Slide plate 25 ... Lever 27 ... Storage part 31 ... Engagement part 32 ... Contact part 33 ... Pressing part 36 ... Hook part 40 ... Space

Claims (4)

A socket body having an accommodating portion for accommodating an electrical component;
A plurality of contact pins disposed in the socket body and separable from the connection terminal portion of the electrical component;
A socket cover mounted on the top of the socket body so as to be movable up and down;
A slide plate disposed in the socket main body so as to be movable up and down, and displacing the contact pin to separate the contact terminal portion of the electrical component;
A lever that is provided between the socket body and the lower surface of the socket cover, transmits a force for lowering the socket cover to the slide plate, and lowers the slide plate;
In an electrical component socket comprising:
The lever has an engaging portion that engages with the socket main body at one end thereof, and has an abutting portion that contacts the lower surface of the socket cover at the other end. A socket for an electrical component, characterized in that it is formed with a pressing portion that presses the slide plate downward.   2. The electrical component socket according to claim 1, wherein the engaging portion of the lever is engaged with a hook portion formed on an inner surface of the socket body.   3. The electrical component socket according to claim 1, wherein the contact portion of the lever is in sliding contact with an inclined surface formed on a lower surface of the socket cover.   The said lever is arrange | positioned in the space enclosed by the said socket main body, a socket cover, and a slide plate, The socket for electrical components of any one of Claims 1-3 characterized by the above-mentioned.

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