JP4370600B2 - Socket for mounting electronic parts - Google Patents

Description

  The present invention mainly relates to an electronic component mounting socket for mounting electronic components such as a camera module and an IC unit 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 camera 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.

  The 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 an electronic component 4 such as a camera module or a semiconductor element protruding from the bottom plate. Are provided with a plurality of contacts 5, 5... Having elastic contact pieces 5a that are elastically in contact with the terminal portion of the electronic component, and by holding the electronic component 4 such as a camera module or a semiconductor element in the electronic component housing portion 2, the electronic component 4 is in contact with the elastic contact piece 5a of the contact 5 and is electrically connected to the printed wiring board via the contacts 5, 5..., And the contacts 5, 5. They are arranged in parallel in a direction perpendicular to the side or the back side.

  Further, as shown in FIG. 9, the electronic component mounting socket 6 has a bowl-shaped socket housing 7 having a square bottom plate, and the elastic contact pieces of the contacts 8, 8,. There is also known one provided with contacts 8, 8... So that the elastic contact piece protrudes into the electronic component housing 9 toward the center side.

  The contacts 8, 8... Of the electronic component mounting socket 6 are arranged in parallel with each other such that each elastic contact piece is oriented in a direction perpendicular to each side from each side around the bottom plate. ... is formed.

  However, in the electronic component mounting socket shown in FIG. 8 described above, the contacts are arranged in parallel from the front side or the back side of the bottom plate toward the center side, and when the number of contacts increases, the number of contacts increases. In addition, there is a problem that the width of the socket housing becomes long and is not suitable for downsizing.

  Further, in the electronic component mounting socket shown in FIG. 9 described above, the length of the elastic contact piece of each contact must be shortened in order to prevent interference between the contact groups on adjacent sides, There is a problem in that a sufficient space between the contact groups causes a useless space in the central part and the four corners, which makes it difficult to reduce the size.

  In view of the above-described problems of the prior art, an object of the present invention is to provide a socket for mounting an electronic component suitable for downsizing.

In order to solve the conventional problems as described above and achieve the intended purpose, the invention according to claim 1 has an electronic component housing portion surrounded by a peripheral wall raised from four sides of a rectangular bottom plate. A socket housing into which the electronic component is inserted into the electronic component housing portion, and a plurality of contacts each having an elongated plate-like elastic contact piece protruding from the bottom plate of the housing to the electronic component housing portion, each resilient contact piece of the contact is, the length direction in parallel to each other, are arranged directed in a direction substantially orthogonal to this and the said length direction from one of one side of four sides of the bottom plate, contact group An electronic component mounting socket comprising: an electronic component is held in the electronic component housing portion, and the terminal portion on the lower surface of the electronic component is electrically connected to the elastic contact piece of the contact. The elastic contact pieces of the contacts of the contact group are arranged such that the length direction thereof is directed from the respective sides of the four sides of the bottom plate of the electronic component housing portion toward the opposing sides, and the four sides are adjacent to each other. Among the contact groups of the contact group, a part or all of the tips of the elastic contact pieces of the other contact group face the side of the elastic contact piece of the other contact group, and the one contact group is the other contact group. The elastic contact piece is arranged so as to be biased in the direction opposite to the other contact group by at least the length in the substantially longitudinal direction, and a space formed by biasing the tip of the other contact group is provided. Each contact is attached to a contact insertion groove provided in a vertical direction on each peripheral wall, and for each peripheral wall A contact insertion groove group comprising a plurality of the contact insertion grooves is provided, the contact insertion groove group is arranged so as to be biased toward one end side of each peripheral wall according to the position of the contact group, and the other end side of each peripheral wall The electronic component fixing bracket for fixing the electronic component inserted in the said electronic component accommodating part was attached to this part.

  In the electronic component mounting socket according to the present invention, the contact group is arranged so as to be biased along each side, so that a useless space can be saved and the entire socket can be reduced in size.

  Further, the contact groups are arranged in a biased manner, and inserted into the electronic component housing portion on the end side opposite to the contact insertion group on each side of each peripheral wall raised from the four sides of the bottom plate. By attaching the electronic component fixing bracket for fixing the electronic component, a portion where the electronic component fixing bracket is installed can be sufficiently taken, and the electronic component can be held in a stable state.

  Next, an embodiment of 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 mounted on a printed wiring board. In the figure, reference numeral 20 denotes an electronic component mounting socket, reference numeral 21 denotes a printed wiring board, and reference numeral 22 denotes an electronic component such as a camera module.

  The electronic component mounting socket 20 is held in the socket housing 24 having an electronic component accommodating portion 23 in which the electronic component 22 is accommodated, and is connected to the terminal patterns 21a, 21a,. The electronic component 22 is electrically connected to the printed wiring board 21 through the contacts 25, 25... By including the plurality of contacts 25, 25. It can be attached in a state.

  As shown in FIG. 3, the socket housing 24 has a square bottom plate 26 and front and rear peripheral walls 27, 28, 29, and 30 raised from four sides of the bottom plate integrally with an insulating material such as a synthetic resin material. An electronic component housing portion 23 is formed which is formed and surrounded by the bottom plate 26 and the front and rear peripheral walls 27, 28, 29, and 30 to house the electronic component 22.

  In the bottom plate 26, a plurality of through holes 31, 31... Penetrating vertically are longer in the direction from the four sides of the bottom plate 26 toward the other side facing each other and slightly shorter than half of the distance between the opposing peripheral walls. Is formed.

  These through holes 31, 31... Are arranged in parallel from the four sides of the bottom plate 26 toward the opposite sides, thereby forming a group of through holes, and on the four sides of the bottom plate adjacent to each other. In the through-hole group, the tip of the other through-hole group is arranged to face the side of one through-hole group.

  The through-hole group in each side is arranged along the side so as to be biased in the direction opposite to the adjacent through-hole group by at least the length of the adjacent through-hole 31 in the longitudinal direction. Yes.

  A flat conveyance suction part 32 surrounded by the tip of each through hole group is formed in the center of the bottom plate 26, and the conveyance suction part 32 is conveyed by an automatic machine or the like by suctioning with a nozzle. Can be done.

  Each of the peripheral walls 27, 28, 29, and 30 is formed in a flat plate shape that rises from the four sides of the bottom plate 26, and shield plates 33, 33,. .

  Each of the peripheral walls 27, 28, 29, 30 is formed with longitudinal contact insertion grooves 34, 34... That open inward and downward and communicate with the through hole 31. That is, the plurality of contact insertion grooves 34, 34... Are arranged vertically with respect to the peripheral walls 27, 28, 29, 30 and parallel to each other. A contact insertion groove group including a plurality of contact insertion grooves is formed for each peripheral wall. The contact insertion groove group is arranged so as to be biased to one side of the peripheral walls 27, 28, 29, 30 in accordance with the position of the through hole 31.

  Slit-like contact mounting grooves 35 and 35 are formed on both side edges of the contact insertion groove 34.

  Further, a group of contact insertion grooves 34 is provided so as to be biased toward one end side of each of the peripheral walls 27, 28, 29, and 30. On the other end side, the electronic component 22 inserted into the electronic component housing portion 23 is fixed. A notch 37 into which an electronic component fixing bracket 36 for insertion is inserted is formed, and the notch 37 has a peripheral wall cut out by the width of the electronic component fixing bracket 36.

  In addition, a bracket mounting portion 38 to which the electronic component fixing bracket 36 is mounted is formed on the lower end outer side of the cutout portion 37.

  As shown in FIG. 4, the electronic component fixing bracket 36 includes an elastic fixing piece 40 having a hook-shaped fixing protrusion 39 at the tip and a mounting piece 41 fixed to the metal mounting portion 38, and is a plate made of stainless steel. It is integrally formed by bending the shaped material.

  The fixing protrusion 39 is formed in a right triangle shape with the bottom side at the bottom, and protrudes toward the electronic component housing portion 23 by being bent at a right angle from the side edge of the elastic fixing piece 40. The edge is locked.

  The elastic fixing piece 40 is elastically deformed with the boundary portion with the attachment piece 41 as a base end, and when the electronic component 22 is inserted into the electronic component accommodating portion 23, the electronic component 22 is inclined to the oblique side of the fixing protrusion 39. The elastic fixing piece 40 is inserted while bending the elastic fixing piece 40 outward, and after being inserted, the elastic fixing piece 40 is restored to its original position by elasticity, and the fixing protrusion 39 is formed on the upper edge of the electronic component 22. It is designed to be locked.

  The attachment piece 41 has an end 41a opposite to the elastic fixing piece 40 bent in an inverted U-shape, and the bent portion 41a is a slit-like engagement opened on the upper surface formed on the metal fitting attachment 38. The electronic component fixing metal fitting 36 is attached to the metal fitting attaching portion 38, that is, the socket housing 24 by being press-fitted into the hole 42.

  An exposed recess 43 for exposing the terminal portions of the contacts 25, 25 is formed at the lower end portions of the peripheral walls 27, 28, 29, 30, and the terminal portions of the contacts 25, 25 are substantially the same as the bottom surface of the socket housing 24. They are exposed on the same plane.

  As shown in FIG. 5, the shield plate 33 is formed in a flat plate shape, with an upper edge cover 44 covering the upper edge of the peripheral wall and mounting claws 45, 45 formed in a downward U-shape on the upper edge portion. Are integrally provided, and fixed pieces 46 and 46 fixed to the fixed patterns 21b and 21b formed on the printed wiring board 21 by soldering or the like are integrally provided on the lower edge portion.

  The shield plate 33 includes a locking protrusion 47 bent at a right angle on one side edge thereof, and a crank piece 48 formed in a crank shape on the other side edge. The locking piece 47 of the plate and the crank piece 48 of the other shield plate are engaged with each other so that the outer periphery of the socket housing 24 is suitably covered even at the corners.

  Since the bottom plate is square, the width of each peripheral wall is the same, and the shield plate may be the same shape.

  As shown in FIG. 6, the contact 25 includes a flat mounting portion 49, a terminal piece portion 50 bent from one end portion of the mounting portion 49, and the terminal piece portion 50 of the mounting portion 49 on the side opposite to the terminal piece portion 50. 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 intermediate spring portion 51 that is bent obliquely from an end portion opposite to the mounting portion 49 of the intermediate spring portion 51. And an elastic contact piece 52 that is elastically deformed, and is integrally formed by punching and bending a conductive plate material such as a copper alloy.

  The mounting portion 49 is formed wider than the width of the contact insertion groove 34, and the side edge thereof is press-fitted into the contact mounting grooves 35, 35 formed on the side portion of the contact insertion groove 34 to fit into the socket housing. A contact 25 is attached to 24.

  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.

The contact portion 52 a is pushed into the lower surface of the electronic component 22 when the electronic component 22 is accommodated in the electronic component accommodating portion 23, and comes into elastic contact with the terminal portion on the lower surface of the electronic component 22. ing.

  When the attachment portion 49 of the contact 25 is inserted into the contact insertion groove 34 and the contact 25 is attached to the socket housing 24, the elastic contact piece 52 protrudes through the through hole 31 into the bottom plate upper surface side, that is, into the electronic component housing portion 23. It is supposed to be. Further, when the electronic component 22 is accommodated in the electronic component accommodating portion 23, even if the elastic contact piece 52 is pushed downward, it escapes to the through hole 31 and does not contact the bottom plate 26.

The contacts 25, 25... Attached to the socket housing 24 have elastic contact pieces 52 that are parallel to each other in the longitudinal direction of the elongated plate , and that the length direction faces this from one side of the bottom plate 26. Contact groups 55, 55... Arranged to face the other side are formed.

  Each of the contact groups 55, 55... Is provided in a direction orthogonal to each side, that is, provided on each of the four sides of the bottom plate 26 toward the opposite side, and the contact groups 55, 55 on the four sides adjacent to each other. 55, a part of the elastic contact pieces 52, 52... Of the other contact group faces the elastic contact piece 52 side of one contact group, and the remaining one of the elastic contact pieces 52, 52 remains. The conveying suction part 32 is surrounded by the tip of the part, that is, the part that does not cover the side part of the elastic contact piece 52 of the adjacent contact group.

  Further, the contact groups 55, 55 on the four adjacent sides of the bottom plate 26 have one contact group opposite to the other contact group by at least approximately the length in the longitudinal direction of the elastic contact piece 52 of the other contact group. The other contact group is arranged so as to be biased in the direction of the side, and the tip of the other contact group is close to the side part of one contact group by filling the space formed by the bias.

  Therefore, by arranging the contact group adjacent to the space formed by biasing the contact group, it is possible to eliminate the extra space of the bottom plate 26 and to reduce the overall shape of the electronic component mounting socket. It is like that.

  On the other hand, as shown in FIG. 7, terminal patterns 21a, 21a,... Are printed on the printed wiring board 21 to which the electronic component mounting socket is attached, in accordance with the arrangement of the terminal piece portions 50 of the contacts 25. That is, a pattern group in which the terminal patterns 21a, 21a,... Are arranged in parallel is arranged so as to be biased along the four sides of the quadrangle.

  Further, on both sides of the pattern group, fixed patterns 21b and 21b to which the fixed pieces 46 of the shield plate 30 are fixed by soldering or the like are formed by printing.

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

  In the above-described embodiment, in the contact groups 55 and 55 on the four sides adjacent to each other, a part of the elastic contact pieces 52, 52. Although the example in which the tip of each contact group is oriented has been described, the side of the elastic contact piece 52 of one contact group may be arranged so that all the tip parts of the elastic contact pieces of the other contact group face. . At this time, the space between the contact groups is minimized.

It is sectional drawing which shows the use condition of the socket for electronic component attachment which concerns on this invention. (A) is a top view which shows the socket for electronic component attachment in FIG. 1, (b) is the side view, (c) is the bottom view. (A) is a top view which shows the socket housing 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. (A) is a front view which shows a shield board same as the above, (b) is the top view. (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. It is a top view which shows an example of the conventional socket for electronic component attachment. It is a top view which shows the other Example of the conventional socket for electronic component attachment same as the above.

20 Electronic component mounting socket 21 Printed wiring board 22 Electronic component 23 Electronic component receiving portion 24 Socket housing 25 Contact 26 Bottom plate 27, 28, 29, 30 Peripheral wall 31 Through hole 32 Transport suction portion 33 Shield plate 34 Contact insertion groove 35 Contact Mounting groove 36 Electronic component fixing bracket 37 Notch 38 Metal mounting portion 39 Fixing protrusion 40 Elastic fixing piece 41 Mounting piece 42 Locking hole 43 Exposed recess 44 Upper edge cover 45 Mounting claw 46 Fixing piece 47 Locking protrusion 48 Crank piece 49 Mounting portion 50 Terminal piece portion 51 Intermediate spring portion 52 Elastic contact piece 55 Contact group

Claims (1)

An electronic component housing part surrounded by a peripheral wall raised from the four sides of the rectangular bottom plate, and including a socket housing into which the electronic component is inserted;
A plurality of contacts each having an elongated plate-like elastic contact piece projecting from the bottom plate of the housing to the electronic component housing portion, the elastic contact pieces of the plurality of contacts being parallel to each other in the length direction ; A contact group arranged with its length direction oriented in a direction substantially orthogonal to one side of any of the four sides of the bottom plate,
In the electronic component mounting socket in which the terminal portion on the lower surface of the electronic component is electrically connected to the elastic contact piece of the contact by holding the electronic component in the electronic component housing portion.
The elastic contact piece of each contact of the contact group has its length direction directed from each side of the four sides of the bottom plate of the electronic component housing portion to the opposite side, respectively, and contacts on the sides adjacent to each other of the four sides. And a part of the elastic contact piece of the other contact group is arranged to face the elastic contact piece side of one contact group, and the one contact group is elastic of the other contact group. At least approximately the length in the longitudinal direction of the contact piece is arranged so as to be biased in the direction opposite to the other contact group, and the tip of the other contact group is packed with a space formed by the bias. , Close to the side of the one contact group,
Each contact is attached to a contact insertion groove provided vertically on each peripheral wall,
Each of the peripheral walls includes a contact insertion groove group composed of a plurality of the contact insertion grooves, and the contact insertion groove group is arranged so as to be biased toward one end side of the peripheral wall according to the position of the contact group, An electronic component mounting socket, wherein an electronic component fixing bracket for fixing an electronic component to be inserted into the electronic component housing portion is attached to a portion on the other end side of each peripheral wall.

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