JP2005150052A - Socket for attaching electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a socket for attaching an electronic component which is hardly affected by contour tolerance of an electronic component, capable of obtaining a stable contact state, and capable of its miniaturization. <P>SOLUTION: The socket 10 for attaching the electronic component comprises a socket housing 14 having an electronic storage part 13 into which the electronic component 12 is inserted, a plurality of contacts 15, 15 each having a projecting elastic contact piece 52 in the electronic storage part 13, and electronic component metal fixtures 16 each having an elastic fixing piece 30 projected from each peripheral wall 18, 19, 20 or 21 into the electronic storage part 13 and locked to the outer surface of the electronic component 12. It holds the electronic component 12 in the electronic storage part 13 and electrically connects the terminals of the electronic component 12 with the elastic contact pieces 52 by inserting the electronic component 12 into the electronic storage part 13 and locking each elastic fixing piece 30 to the outer surface of the electronic component 12. Pressing metal fittings 31 each having a spring piece 33, which is projected from the peripheral wall into the electronic storage part 13 and biases the electronic component 12 in the direction approximately orthogonal to each peripheral wall, are arranged. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention mainly relates to an electronic component mounting socket for mounting electronic components such as sensor modules and semiconductor elements in a state of being electrically connected to a printed wiring board.

  2. Description of the Related Art Conventionally, electronic devices such as mobile phones are provided with a printed wiring board inside, and electronic components such as sensor modules and other semiconductor elements are attached to the printed wiring board. Since it cannot be attached by direct soldering, it is connected to a printed wiring board using an electronic component attaching socket as shown in FIG.

  An electronic component mounting socket 1 includes a socket housing 3 having an electronic component housing portion 2 surrounded by a peripheral wall raised from four sides of a rectangular bottom plate, and a projection of the electronic component 4 such as a sensor module or a semiconductor element. A plurality of contacts having elastic contact pieces 5 that elastically contact the terminal portion, and by holding the electronic component 4 such as a sensor module or a semiconductor element in the electronic component housing portion 2, the terminal portion of the electronic component 4 is It contacts the elastic contact piece 5 of the contact and is electrically connected to the printed wiring board via the contacts 5, 5.

  The electronic component mounting socket 1 has an elastic fixing piece 6 on the peripheral wall of the socket housing 3, which protrudes into the electronic component housing portion 2, and a fixing protrusion 6 a at the tip is locked to the upper edge of the electronic component 4. An electronic component fixing bracket is provided, and the electronic component 4 is held in the electronic component housing portion 2 by the electronic component fixing bracket.

  However, in the conventional technology as described above, when the outer tolerance of the electronic component is large and a gap is formed between the electronic component and the inner surface of the electronic component housing portion, if the electronic component fixing bracket is small, the electronic component is not contained in the electronic component housing portion. There is a problem that the position of the component is displaced and the contact between the electronic component and the contact is deteriorated. Conversely, in order to securely fix the electronic component in the electronic component housing portion, the electronic component fixing bracket must be enlarged. In other words, there is a problem that it is difficult to reduce the size of the entire socket.

  SUMMARY OF THE INVENTION In view of the above-described problems of the related art, the present invention has an object to provide an electronic component mounting socket that is less affected by the outer tolerance of an electronic component, can obtain a stable contact state, and can be downsized. .

In order to solve the conventional problems as described above and achieve the intended purpose, the feature of the invention described in claim 1 includes an electronic component housing portion surrounded by a peripheral wall raised from the periphery of the bottom plate, A socket housing into which the electronic component is inserted into the electronic component receiving portion; a plurality of contacts each having an elastic contact piece protruding into the electronic component receiving portion of the housing; and the electronic component protruding into the electronic component receiving portion from the peripheral wall, An electronic component fixing bracket having an elastic fixing piece locked to the outer surface of
By inserting the electronic component into the electronic component housing portion and engaging the elastic fixing piece with the outer surface of the electronic component, the electronic component is held in the electronic component housing portion, and the terminal portion of the electronic component is the contact In an electronic component mounting socket that is electrically connected to the elastic contact piece of
The electronic component mounting socket includes a pressing metal fitting having a spring piece protruding from the peripheral wall into the electronic component housing portion and biasing the electronic component in a direction substantially orthogonal to the peripheral wall.

  The invention according to claim 2 is characterized in that, in addition to the configuration of claim 1, the pressing metal fitting is disposed at a position facing the electronic component mounting metal fitting.

  The invention according to claim 3 comprises a plurality of contacts in addition to the configuration of claim 1 or 2, and the elastic contact piece of each contact is directed from one side of the periphery of the bottom plate in a direction substantially orthogonal thereto. The electronic component fixing metal fitting is arranged on one side portion of the plurality of contact groups arranged in parallel to each other, and the pressing metal fitting is arranged on the other side portion.

  According to a fourth aspect of the present invention, in addition to the configuration of the first, second, or third aspect, the pressing fitting includes a fixed portion that is fixed to the inner surface of the peripheral wall, and a spring that is bent obliquely upward from a lower end portion of the fixed portion. And a piece.

  The electronic component mounting socket according to the present invention is configured such that the electronic component is sandwiched between the electronic component fixing bracket and the pressing bracket and held in a suitable position by providing the pressing bracket at a position facing the electronic component fixing bracket. A stable connection state can be obtained without shifting.

  In addition, by placing the electronic component mounting bracket on one side of the contact group and the pressing bracket on the other side, the bottom plate has a pentagonal shape, and the opposing peripheral walls are parallel. Even if not, the side surface of the electronic component is urged by both the electronic component mounting bracket and the pressing bracket, so that the electronic component can be held at a suitable position in the electronic component housing portion.

  That is, the electronic component mounting socket according to the present invention can hold the electronic component at a suitable position and obtain a stable connection state regardless of the polygonal shape.

  In addition, by bending the spring piece of the pressing bracket obliquely upward from the lower end, the electronic component can also be urged downward, making contact with the contact, that is, the elastic contact piece with a suitable contact pressure, and stable contact. The state can be obtained.

  Next, an electronic component mounting socket according to the present invention will be described with reference to FIGS.

  FIG. 1 shows a state in which an electronic component mounting socket is attached to a printed wiring board. In FIG. 1, reference numeral 10 denotes an electronic component mounting socket, reference numeral 11 denotes a printed wiring board, and reference numeral 12 denotes an electronic component such as a sensor module or a semiconductor element. is there.

  The electronic component mounting socket 10 includes a socket housing 14 having an electronic component accommodating portion 13 in which the electronic component 12 is accommodated, and a plurality of elastic contact pieces that are held by the socket housing 14 and come into contact with the terminal portions of the electronic component 12. Contacts 15, 15... And the electronic component 12 is held in the electronic component housing portion 13 by fixing the electronic component 12 in the electronic component housing portion 13 by the electronic component fixing bracket 16. The part comes into contact with the elastic contact piece, and the electronic component 12 is attached in a state of being electrically connected to the printed wiring board 11 via the electronic component attachment socket 10.

  The socket housing 14 includes a flat bottom plate 17 and peripheral walls 18, 19, 20, and 21 raised from four sides of the bottom plate. The socket housing 14 is surrounded by the bottom plate 17 and the peripheral walls 18, 19, 20, and 21 to accommodate electronic components. A portion 13 is formed.

  The bottom plate 17 is formed with a plurality of slit-like through holes 22, 22... Parallel to each other on the other side from the four sides.

  Each of the peripheral walls 18, 19, 20, and 21 is formed in a flat plate shape that rises from the four sides of the bottom plate 17, and shield plates 23, 23,... Made of a conductive material are fitted into the outer surface, and the outer surface is covered. .

  Each of the peripheral walls 18, 19, 20, 21 has a contact that communicates with the through-hole 22 by opening the lower and inner sides, that is, the electronic component housing portion 13 side, in accordance with the positions of the through-holes 22, 22. Insertion grooves 24, 24... Are formed, and contact attachment grooves 25, 25 into which the attachment portions of the contacts 15 are press-fitted are formed on both side edges of the contact insertion grooves 24.

  Further, a notch 26 into which an electronic component fixing bracket 16 for fixing the electronic component 12 inserted into the electronic component housing portion 13 is inserted is formed at one end of each of the side walls 18, 19, 20, 21. The notch 26 is formed by cutting the peripheral wall by the width of the electronic component fixing bracket 16.

  In addition, a metal fitting attaching portion 27 to which the electronic component fixing metal fitting 16 is attached is formed on the lower end outer side of the notch 26.

  As shown in FIG. 3, the electronic component fixing bracket 16 is fixed to the bracket mounting portion 27 of the peripheral walls 18, 19, 20, and 21 of the socket housing, and locked to the upper edge of the electronic component 12 at the tip. And an elastic fixing piece 30 having a fixing protrusion 29, which is integrally formed by punching a stainless steel plate in accordance with its shape and bending it.

  The fixing portion 28 is formed in an inverted U shape by bending an end portion 28a opposite to the elastic fixing piece 30, and by holding a metal fitting attaching portion 27 between the U shapes, the electronic component fixing metal fitting 16 is provided. Is attached to the bracket mounting portion 27, that is, the peripheral walls 18, 19, 20, and 21 of the socket housing 14.

  The elastic fixing piece 30 is bent from the other end of the fixing portion 28 and is elastically deformed with a boundary portion with the fixing portion 28 as a base end, and an upper edge of the electronic component 12 is engaged with the tip portion. The fixed protrusions 29 and 29 to be stopped are integrally formed.

  The fixing protrusion 29 is formed in a right triangle shape with the bottom side on the bottom, and is bent at a right angle from both side edges of the elastic fixing piece 30 so as to protrude toward the electronic component housing portion 13. The edge is locked.

  The electronic component fixing bracket 16 is inserted while the electronic component 12 is inserted into the electronic component housing portion 13 while the electronic component 12 presses the oblique side portion of the fixing protrusion 29 and the elastic fixing piece 30 is bent outward. After the insertion, the elastic fixing piece 30 is restored to its original position by elasticity, and the fixing projection 29 is locked to the upper edge of the electronic component 12.

  Further, a pressing metal 31 is attached to a peripheral wall facing the electronic component fixing bracket 16 at a position substantially facing the electronic component fixing bracket 16.

  That is, on each of the peripheral walls 18, 19, 20, and 21, the electronic component fixing bracket 16 and the pressing bracket 31 are respectively disposed at both ends across the contact insertion grooves 24, 24. On the peripheral wall, the electronic component fixing bracket 16 and the pressing bracket 31 are arranged so as to face each other.

  As shown in FIG. 4, the pressing metal fitting 31 includes a fixing portion 32 fixed to the peripheral wall and a spring piece 33 bent from one end of the fixing portion 32, punching out a stainless steel plate according to the shape, and folding it. It is integrally formed by bending.

  The fixing portion 32 is formed in an inverted U shape by bending an end portion 32a opposite to the spring piece 33. As shown in FIG. 5, a fixing holding portion 35 formed on the peripheral wall is formed between the U shapes. By clamping, the peripheral walls 18, 19, 20, and 21 are fixed.

  The spring piece 33 is bent obliquely upward from the lower end of the fixed portion 32 fixed along the inner surface of the peripheral wall, and the tip portion 33a is bent in a square shape.

  In this pressing metal 31, the spring piece 33 applies a reaction force to the peripheral wall to urge the electronic component 12 toward the fixing metal side and the lower side, thereby holding the electronic component 12 in an accurate position in the electronic component housing portion 13. Can be done.

  As shown in FIG. 6, the contact 15 includes an attachment portion 49 fixed to the peripheral wall, a terminal portion 50 bent from one end portion of the attachment portion 49, and a terminal portion 50 on the opposite side of the attachment portion 49. An intermediate spring portion 51 that is bent from the end portion and forms an inverted U shape with the attachment portion 49, and an elastic contact piece 52 that is bent in an oblique direction from the end portion opposite to the attachment portion of the intermediate spring portion 51 are integrated. In preparation, the copper alloy plate is punched in accordance with the shape, and is bent.

  The attachment portion 49 is formed wider than the width of the contact insertion groove 24, and the side edge thereof is press-fitted into the contact attachment grooves 25, 25 formed on the side portion of the contact insertion groove 24, thereby fitting the socket housing. 14, a contact 15 is attached.

  The intermediate spring portion 51 is elastically deformed with a boundary portion with the attachment portion 49 as a base end.

  The elastic contact piece 52 is formed in an elongated plate shape, its tip is formed in an arc shape, and includes a contact portion 52a at the top of the arc portion.

  And when the electronic component 12 is accommodated in the electronic component accommodating part 13, the contact part 52a is pushed into the lower surface of the electronic component 12 and elastically contacts the terminal part of the electronic component 12. .

  When the attachment portion 49 of the contact 15 is inserted into the contact insertion groove 24 and the contact 15 is attached to the socket housing 14, the elastic contact piece 52 protrudes through the through hole 22 into the bottom plate upper surface side, that is, into the electronic component housing portion 13. It is supposed to be. Further, when the electronic component 12 is accommodated in the electronic component accommodating portion 13, even if the elastic contact piece 52 is pushed downward, it escapes to the through hole 22 and does not come into contact with the bottom plate 17.

  Further, each of the contacts 15, 15... Attached to the socket housing 14 has contact groups 55, 55 in which the elastic contact pieces 52 are arranged in parallel with each other so that the elastic contact piece 52 is directed from one side of the bottom plate 16 to the other side opposite thereto. ... form.

  On both sides of each of the contact groups 55, 55..., The electronic component fixing bracket 16 is disposed on one side, and the pressing bracket 31 is disposed on the other side.

  The thus configured electronic component mounting socket 10 includes an electronic component fixing bracket 16 and a pressing bracket 31 at the opposite position thereof, and the electronic component fixing bracket 16 is provided on one side of each contact group 55. And the pressing metal fitting 31 is arranged on the other side, so that an equal pressing force is applied to each outer peripheral surface of the electronic component 12 in the horizontal direction, and the electronic component 12 is placed in the central portion of the electronic component housing portion 13. In addition to being fixed, the spring piece 33 of the pressing metal member 31 is in contact with the upper edge of the electronic component 12 at an angle, so that a downward urging force is applied, and the elastic contact piece 52 of the contact 15 is brought into contact with a suitable contact pressure. The fixing protrusion 29 of the fixing piece 30 is locked to the upper edge of the electronic component 12 so as to be prevented from coming off.

  On the other hand, terminal patterns 11a, 11a,... Are printed on the printed wiring board 11 to which the electronic component mounting socket is attached, as shown in FIG. That is, a group of patterns in which the terminal patterns 11a, 11a,... Are arranged in parallel are arranged so as to be biased along the four sides of the quadrangle.

  Also, fixed patterns 11b and 11b to which the shield plate 23 is fixed by soldering or the like are formed on both sides of the pattern group by printing.

  In the above-described embodiment, the example in which the bottom plate of the connector housing is formed in a square shape has been described. However, the shape of the bottom plate may be other polygonal shapes.

  In addition, even when the bottom plate is formed in a polygonal shape or when the peripheral walls facing each other are not arranged parallel to each other, such as a pentagonal shape, electronic components are fixed to one side of the contact group in each periphery By arranging the metal fittings and arranging the pressing metal fittings on the other side, each side of the electronic component is urged by both the electronic component mounting metal fittings and the pressing metal fittings. Can be held in position.

It is sectional drawing which shows the state which attached the socket for electronic component attachment which concerns on this invention to the printed wiring board. (A) is a top view which shows the socket for electronic component attachment same as the above, (b) is the side view, (c) is the bottom view. (A) is a front view which shows an electronic component fixing metal fitting same as the above, (b) is the top view, (c) is the side view. It is a side view which shows the pressing metal fitting same as the above. It is sectional drawing which shows the attachment state of a pressing metal fitting same as the above. (A) is a front view which shows the contact same as the above, (b) is the top view, (c) is the side view. It is a top view which shows a printed wiring board same as the above. (A) is a top view which shows the conventional socket for electronic component attachment, (b) is the same sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Electronic component mounting socket 11 Printed wiring board 12 Electronic component 13 Electronic component accommodating part 14 Socket housing 15 Contact 16 Electronic component fixing bracket 17 Bottom plate 18, 19, 20, 21 Peripheral wall 22 Through-hole 23 Shield plate 24 Contact insertion groove 25 Contact Mounting groove 26 Notch portion 27 Bracket mounting portion 28 Fixed portion 29 Fixed projection 30 Elastic fixing piece 31 Pressing bracket 32 Fixed portion 33 Spring piece 34 Fixing clamping portion 49 Mounting portion 50 Terminal portion 51 Intermediate spring portion 52 Elastic contact piece portion 52a Contact Part

Claims (4)

A socket housing having an electronic component housing portion surrounded by a peripheral wall raised from the periphery of the bottom plate, and an electronic contact portion inserted into the electronic component housing portion, and an elastic contact piece projecting into the electronic component housing portion of the housing A plurality of contacts each having an electronic component fixing bracket that has an elastic fixing piece that protrudes into the electronic component housing portion from the peripheral wall and is locked to the outer surface of the electronic component;
By inserting the electronic component into the electronic component housing portion and engaging the elastic fixing piece with the outer surface of the electronic component, the electronic component is held in the electronic component housing portion, and the terminal portion of the electronic component is the contact In an electronic component mounting socket that is electrically connected to the elastic contact piece of
An electronic component mounting socket, comprising: a pressing metal fitting having a spring piece protruding from the peripheral wall into the electronic component housing portion and biasing the electronic component in a direction substantially orthogonal to the peripheral wall.   The electronic component mounting socket according to claim 1, wherein the pressing metal fitting is disposed at a position facing the electronic component mounting metal fitting.   A plurality of contacts, and the elastic contact piece of each contact is directed to one side of a plurality of contact groups arranged in parallel with each other so as to be directed in a direction substantially orthogonal to one side of the bottom plate periphery. The electronic component mounting socket according to claim 1, wherein a component fixing bracket is disposed, and a pressing bracket is disposed on the other side portion.   4. The electronic component mounting socket according to claim 1, wherein the pressing metal fitting includes a fixing portion fixed to the inner surface of the peripheral wall and a spring piece bent obliquely upward from a lower end portion of the fixing portion.

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