CLAIM OF PRIORITY
This application claims benefit of Japanese Patent Application No. 2012-110185 filed on May 14, 2012 and No. 2013-022160 filed on Feb. 7, 2013, which are hereby incorporated by reference in their entireties.
BACKGROUND
1. Field of the Disclosure
The present disclosure relates to a socket for electronic components, and specifically relates to a socket for electronic components which handles high frequency and enables reduction in size.
2. Description of the Related Art
Nowadays, electronic devices which handle high frequency have increased, and there is demand for sockets for electronic components for high-frequency correspondence. In particular, demand for high-frequency correspondence has been strong for sockets to be used for MPU (Micro Processing Unit). An existing socket for electronic components is disclosed in U.S. Pat. No. 6,877,223.
Hereinafter, a socket for electronic components, disclosed in U.S. Pat. No. 6,877,223, will be described with reference to FIG. 13. FIG. 13 is a diagram illustrating the socket for components SO according to U.S. Pat. No. 6,877,223.
The socket for electronic components SO disclosed in U.S. Pat. No. 6,877,223 has, as illustrated in FIG. 13, a configuration wherein shield plates SB, which are metal plates, are assembled in a lattice shape, and a connection terminal TR, which can electrically conduct with an electrode of an electronic component, is provided within the lattice formed of the shield plates SB.
U.S. Pat. No. 6,877,223 is an example of the related art. The socket for electronic components disclosed in U.S. Pat. No. 6,877,223 includes the shield plates SB to deal with external noise, and has sufficient noise-proof nature for existing applications, but there is concern that sufficient noise-proof nature will not be obtained at the time of handling high frequency.
SUMMARY
A socket for electronic components according to an aspect of the present invention is a socket for an electronic component configured to connect each electrode terminal of the electronic component to a wiring of a wiring board, wherein a shield member having electrical conductivity and including multiple openings is disposed in a housing to be mounted on the wiring board; with a contact unit for signals configured to electrically conduct between an electrode terminal of the electronic component and a wiring of the wiring board, and a contact unit for grounding being disposed in an opening; and with the contact unit for grounding having a ground contacting portion, and in accordance with mounting of the electronic component on the housing, grounding being performed by the ground contacting portion and the shield member electrically conducting.
According to an aspect of the present invention, a ground contacting portion is provided to a contact unit configured to electrically conduct an electrode of an electronic component, and the ground contacting portion is brought into contact with a shield member for grounding, whereby a portion configured to perform electrical conduction and a portion configured to perform grounding may be brought close. The closer the portion configured to perform electrical conduction and the portion configured to perform grounding are, the more the high-frequency property is improved, and accordingly, an advantage is yielded wherein a socket for electronic components which may handle high frequency may be provided.
Within the contact unit, the ground contacting portion is further provided to a moving member closer to a location where electrical conduction is performed, and accordingly, an advantage is yielded wherein the high-frequency property is further improved.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view illustrating a configuration of a socket for electronic components according to a first embodiment;
FIG. 2 is a perspective view illustrating a configuration of a contact unit;
FIGS. 3A and 3B are diagrams illustrating a moving member;
FIG. 4 is a perspective view illustrating a contact bar according to the first embodiment;
FIG. 5 is a plan view illustrating an allocation example of a first elastic portion and a second elastic portion;
FIG. 6 is a plan view illustrating allocated positions of a first elastic portion and a second elastic portion, according to the first embodiment;
FIGS. 7A to 7D are diagrams for description of operation of the socket for electronic components according to the first embodiment;
FIGS. 8A to 8C are perspective views illustrating a configuration of a socket for electronic components according to a second embodiment;
FIGS. 9A and 9B are perspective views illustrating a moving member according to the second embodiment;
FIGS. 10A to 10C are diagrams illustrating a configuration of a socket for electronic components according to a third embodiment;
FIGS. 11A to 11C are diagrams illustrating a configuration of a socket for electronic components according to a fourth embodiment;
FIGS. 12A and 12B are diagrams illustrating a moving member and a ground contacting member, according to a modification; and
FIG. 13 is a diagram illustrating a socket for electronic components according to U.S. Pat. No. 6,877,223.
DESCRIPTION OF THE EXEMPLARY EMBODIMENTS
First Embodiment
Hereinafter, a socket for electronic components 100 according to a first embodiment will be described.
First, description will be made regarding the configuration of the socket for electronic components 100 according to the present embodiment, with reference to FIGS. 1 to 7. FIG. 1 is a perspective view illustrating the configuration of the socket for electronic components 100 according to the first embodiment. Note that, in order to facilitate description, in FIG. 1, a portion of the socket for electronic components 100 is clipped and illustrated, and also a portion of a moving member 2 is not illustrated. FIG. 2 is a perspective view illustrating the configuration of a contact unit U10. FIGS. 3A and 3B are diagrams illustrating the moving member 2, and FIG. 3A is a perspective view illustrating a state in which the moving member 2 is viewed from above, and FIG. 3B is a perspective view illustrating a state in which the moving member 2 is viewed from below. FIG. 4 is a perspective view illustrating a contact bar B10 according to the first embodiment. FIG. 5 is a plan view illustrating allocation of a first elastic portion 3b and a second elastic portion 3c. FIG. 6 is a plan view illustrating allocated positions of the first elastic portion 3b and second elastic portion 3c according to the first embodiment. Note that, in FIGS. 5 and 6, in order to facilitate description, the socket for electronic components 100 is partially described, and also the moving member 2 is not illustrated.
The socket for electronic components 100 includes, as illustrated in FIG. 1, a shield member 1 made up of multiple shield plates 1a, a contact unit for signals configured to electrically conduct an electrode terminal TM of an electronic component (see FIGS. 7A to 7D), a wiring of a wiring board PB (see FIGS. 7A to 7D), and a contact unit U10 for grounding, and a housing 4 which may hold the shield member 1, the contact unit for signals, and the contact unit U10 for grounding. The contact unit for signals and the contact unit U10 for grounding are alternately disposed, for example. The contact unit U10 is, as illustrated in FIGS. 1 and 2, made up of the moving member 2 and elastic member 3.
The shield member 1 is, as illustrated in FIG. 1, formed by the multiple shield plates 1a made up of a metal plate piece being combined in a lattice shape so that the cross section becomes an approximate regular square, and has an opening 1b where space is formed within the lattice. Note that the lattice formed by the shield plates 1a being combined makes up rows and columns in two directions which intersect perpendicularly.
The moving member 2 is, as illustrated in FIGS. 3A and 3B, made up of a synthetic-resin material and a metal plate, and is formed in a generally rectangular parallelepiped shape. The moving member 2 includes a ground contacting portion 2a which may electrically conduct the shield member 1, a contact portion 2b having electrical conductivity which may be in contact with an electrode terminal TM of an electronic component, an electroconductive portion 2c which electrically conduct the contact portion 2b, and a pedestal portion 2f. Note that the pedestal portion 2f is made up of a synthetic-resin material, and the ground contacting portion 2a, contact portion 2b, and electroconductive portion 2c are made up of one sheet of metal plate, and the ground contacting portion 2a, contact portion 2b, and electroconductive portion 2c mutually electrically conduct. Also, the pedestal portion 2f formed in a generally rectangular parallelepiped shape includes the contact portion 2b on the upper face (face on Z1 side) with which the electrode terminal TM of the electronic component may come into contact with, includes the ground contacting portion 2a on the side faces (face on Y1 side, face on Y2 side), and includes the electroconductive portion 2c on the lower face (face on Z2 side).
Also, the electroconductive portion 2c includes a first inclined face portion 2d where a face inclined one side against the moving direction (Z1-Z2 direction) of the moving member 2, and a second inclined face portion 2e where a face inclined the other side against the moving direction (Z1-Z2 direction) of the moving member 2, and with the contact portion 2b, two protruding portions 2g are formed protruding in the Z1 direction.
The elastic member 3 includes, as illustrated in FIG. 2, a base portion 3a made up of a synthetic-resin material and formed in a rectangular parallelepiped shape, a first elastic portion 3b and a second elastic portion 3c formed in a leaf spring shape made up of a metal plate extending from the upper face (face on Z1 side) of the base portion 3a along the moving direction (Z1-Z2 direction) of the moving member 2, and a contacting portion 3d which is made up of a metal plate, is formed protruding from the lower face (face on Z2 side) of the base portion 3a, and is in contact with a wiring of the wiring board PB. Note that the first elastic portion 3b, second elastic portion 3c, and contacting portion 3d electrically conduct.
Also, with the diagram illustrated in FIG. 2, the contact unit U10 has a configuration wherein one set of the first elastic portion 3b and second elastic portion 3c are provided to the base portion 3a, but with the present embodiment, as illustrated in FIG. 4, this is employed as a mode of the contact bar B10 where multiple sets of the first elastic portion 3b and second elastic portion 3c are provided to the base portion 3a.
Also, the first elastic portion 3b and second elastic portion 3c may have, as illustrated in FIG. 5, a configuration wherein the root of the first elastic portion 3b and the root of the second elastic portion 3c are disposed in parallel on the same virtual straight line L1 assumed on the upper face of the base portion 3a, but with the present embodiment, as illustrated in FIG. 6, the root of the first elastic portion 3b is disposed on the one virtual straight line L2 of two virtual parallel lines assumed on the upper face of the base portion 3a, and the root of the second elastic portion 3c is disposed on the other virtual straight line L3 of the two virtual parallel lines, and also which are disposed in different positions along the extending direction of the two virtual parallel lines.
The housing 4 is, as illustrated in FIG. 1, made up of a synthetic-resin material, formed in a generally rectangular parallelepiped shape, and includes a storage unit 4a where the shield member 1 and contact unit U10 may be disposed.
Next, the configuration of the socket for electronic components 100 will be described with reference to FIGS. 1 and 2. As illustrated in FIG. 1, socket for electronic components 100 has a configuration wherein the contact unit U10 is disposed in the openings 1b of the lattice of the shield member 1. At this time, the moving member 2 is, as illustrated in FIG. 2, disposed in a state in which the first inclined face portion 2d and first elastic portion 3b are in contact on the elastic member 3, and the second inclined face portion 2e and second elastic portion 3c are in contact. Thus, the elastic member 3 electrically conducts with the wiring of the wiring board PB (see FIGS. 7A to 7D), and also electrically conducts with the conductive portion 2c of the moving member 2, and is enabled to electrically conduct to the electrode terminal TM (see FIGS. 7A to 7D) of the electronic component via the contact portion 2b. Also, the moving member 2 is disposed so as to move in a pressed direction (Z2 direction) in accordance with coming into contact with the electronic component. Note that, in accordance with the moving member 2 being pressed to move, the ground contacting portion 2a provided to the side faces of the moving member 2 may move to a position facing the inner faces of the openings 1b of the shield member 1.
Next, the operation of the socket for electronic components 100 will be described with reference to FIGS. 7A to 7D. FIGS. 7A to 7D are diagrams for description of the operation of the socket for electronic components 100 according to the first embodiment, FIG. 7A is a perspective view illustrating the socket for electronic components 100, FIG. 7B is a side view illustrating the socket for electronic components 100 in the initial state, FIG. 7C is a side view illustrating the socket for electronic components 100 after operation, and FIG. 7D is a top view illustrating the socket for electronic components 100 after operation. Note that, in FIGS. 7A to 7D, in order to facilitate description, the operation in one set of the contact units U10 is illustrated.
Upon an electronic component being attached to the socket for electronic components 100, first, as illustrated in FIG. 7B, the electrode terminal TM of the electronic component and the contact portion 2b of the moving member 2 are brought into contact, and between the electronic component and the socket for electronic components 100 electrically conducts. Thereafter, as illustrated in FIG. 7C, upon the moving member 2 being pressed in a direction of an arrow A, the first elastic portion 3b is bent along the first inclined face portion 2d, and also, the second elastic portion 3c is bent along the second inclined face portion 2e, and accordingly, the moving member 2 moves to the direction of the arrow A, and electrical conduction between the electronic component and the socket for electronic components 100 is stabilized. At this time, in accordance with movement of the moving member 2, force to press in a direction against movement of the moving member 2 is applied to the first inclined face portion 2d and second inclined face portion 2e from the first elastic portion 3b and second elastic portion 3c, respectively. Thus, component of force in the vertical direction is applied to the first inclined face portion 2d and second inclined face portion 2e in a direction against movement of the moving member 2. This component of force acts in arrow B and arrow C directions illustrated in FIG. 7D, and accordingly, torque acts on the moving member 2, the moving member 2 turns on a virtual axis which is parallel to the moving direction of the moving member 2 as the center, and the ground contacting portion 2a and the inner circumference faces of the shield member 1 are brought into contact. Thus, in the event that the contact unit U10 is for grounding, grounding may be performed by the ground contacting portion 2a provided to the side face facing the inner faces of the openings 1b of the shield member 1 and the inner circumference faces of the shield member 1 electrically conducting. Note that a shield plate 1a in a portion corresponding to the contact unit U10 which is not for grounding has been subjected to coating or plating or the like with insulation properties, so even in the event that the ground contacting portion 2a of the contact unit U10 not for grounding and the shield member come into contact, grounding does not occur. Also, in the event that the contact unit U10 for grounding is employed, though not illustrated in the drawing, the contacting portion 3d and shield member 1 are electrically connected using a method such as connection by a circuit, connection by an electroconductive adhesive agent or solder, or the like.
Note that, upon the electronic component being detached from the socket for electronic components 100, the moving member 2 is returned to the position in the initial state illustrated in FIG. 7B by pressing force of the first elastic portion 3b and second elastic portion 3c. However, though not illustrated in the drawing, the moving member 2 has been subjected to retaining so as to prevent the moving member 2 from falling off from the shield member 1, and accordingly, a problem is prevented wherein the moving member 2 flies out from the above-mentioned position in the initial state.
Hereinafter, advantages owing to the present embodiment being employed will be described.
The socket for electronic components 100 according to the present embodiment is a socket for electronic components configured to connect each electrode terminal TM of an electronic component and the wiring of the wiring board PB, and has a configuration wherein the shield member 1 where the multiple shield plates 1a made up of a metal plate piece are combined in as lattice shape is disposed in the housing 4 which may be mounted on the wiring board PB, the contact unit U10 for electrically conducting between the electrode terminals TM of the electronic component and the wiring board PB is disposed in openings 1b of the lattice of the shield member 1, and in the event that the contact unit U10 is for grounding, the contact unit U10 includes the ground contacting portion 2a, in accordance with mounting of the electronic component on the housing 4, grounding is performed by the ground contacting portion 2a and shield member 1 electrically conducting.
Thus, the ground contacting portion 2a is provided to the contact unit U10 configured to perform electrical conduction with the electrode terminals TM of the electronic component, and grounding is performed by bringing the ground contacting portion 2a into contact with the shield member 1 to electrically conduct both, and accordingly, a portion configured to perform electrical conduction, and a portion configured to perform grounding may be brought close. The closer the portion to perform electrical conduction and the portion to perform grounding are, the more the high-frequency property is improved, and accordingly, an advantage is yielded wherein a socket for electronic components capable of handling high frequency may be provided.
Also, the socket for electronic components 100 according to the present embodiment is configured wherein the contact unit U10 includes the moving member 2 and elastic member 3, the moving member 2 has electrical conductivity and includes the contact portion 2b which is in contact with the electrode terminal TM of the electronic component, and the electroconductive portion 2c which electrically conducts with the contact portion 2b, and also enables to move in accordance with coming into contact with an electronic component, the elastic member 3 electrically conduct the wiring of the wiring board, and also electrically conduct the electroconductive portion 2c of the moving member 2, and presses the moving member 2 in a direction against movement of the moving member 2.
Thus, even within the contact unit U10, the ground contacting portion 2a is further provided to the moving member 2 close to a portion configured to perform electrical conduction, an advantage is yielded wherein the high-frequency property is further improved.
Also, with the socket for electronic components 100 according to the present embodiment, in the event that the contact unit U10 is for grounding, the moving member 2 is configured to include the ground contacting portion 2a on a side face facing the inner faces of the openings 1b of the shield member 1.
Thus, the moving member 2 is configured to include the ground contacting portion 2a on the side face facing the inner faces of the openings 1b of the shield member 1, and accordingly, an advantage is yielded wherein the openings 1b and ground contacting portion 2a are readily brought into contact, and grounding is performed in a more sure manner.
Also, the socket for electronic components 100 according to the present embodiment is configured wherein the elastic member 3 includes a base portion 3a which may be disposed in the housing 4, and the first elastic portion 3b and second elastic portion 3c formed in a leaf spring shape extending along the moving direction of the moving member 2 from the based portion 3a, and in the event that the contact unit U10 is for grounding, the moving member 2 includes the contact portion 2b on the upper face with which the electrode terminals TM of the electronic component may be brought into contact, includes the ground contacting portion 2a on the side face, and includes the electroconductive portion 2c on the lower face, and the contact portion 2b, electroconductive portion 2c, and ground contacting portion 2a mutually electrically conduct, the electroconductive portion 2c includes the first inclined face portion 2d where a face inclined in one side against the moving direction of the moving member 2 is formed, and the second inclined face portion 2e where a face inclined in the other side against the moving direction of the moving member 2 is formed, and the moving member 2 is disposed on the elastic member 3 in a state in which the first inclined face portion 2d and first elastic portion 3b are brought into contact, and the second inclined face portion 2e and second elastic portion 3c are brought into contact, and in accordance with movement of the moving member 2, the moving member 2 turns on an axis parallel to the moving direction of the moving member 2 as the center by elastic force of the elastic member 3, and the ground contacting portion 2a and shield member 1 electrically conduct, and grounding is performed.
Thus, upon the moving member 2 being pressed in the moving direction, the first elastic portion 3b is bent while slidably contacting the first inclined face portion 2d, and similarly, the second elastic portion 3c is bent along the second inclined face portion 2e. According to the pressing force of the first elastic portion 3b and the pressing force of the second elastic portion 3c, the first inclined face portion 2d and second inclined face portion 2e are pressed in the facing direction, and accordingly, torque acts on the moving member 2, and the moving member 2 turns on a virtual axis parallel to the moving direction as the center. Accordingly, in the event that the moving member 2 is employed as the contact unit U10 for grounding, the ground contacting portion 2a is pressed against and brought into contact with the shield member 1 by the moving member 2 turning within the lattice of the shield member 1, and accordingly, the moving member 2 and shield member 1 electrically conduct, and an advantage is yielded wherein a socket for electronic components which performs stable grounding and enables to handle high frequency may be provided.
Also, the socket for electronic components 100 according to the present embodiment is configured wherein the root of the first elastic portion 3b is disposed on one virtual straight line L2 of two virtual parallel lines assumed on the upper face of the base portion 3a, the root of the second elastic portion 3c is disposed on the other virtual straight line L3 of the two virtual parallel lines, and also, the first elastic portion 3b and second elastic portion 3c are disposed in different positions along the extending directions of the two virtual parallel lines.
Thus, the root of the first elastic portion 3b is disposed on one L2 of the two virtual parallel lines assumed on the upper face of the base portion 3a, and the root of the second elastic portion 3c is disposed on the other L3 of the two parallel straight lines, and accordingly, the moving member 2 may readily turn by applying torque to the moving member 2 using the pressing force of the first elastic portion 3b and the pressing force of the second elastic portion 3c. Thus, the ground contacting portion 2a may be brought into contact with the shield member 1 in a sure manner, and accordingly, an advantage is yielded wherein a socket for electronic components which performs further stable grounding on high frequency may be provided.
Also, with the socket for electronic components 100 according to the present embodiment, the shield member 1 is configured of multiple shield plates 1a made up of a metal plate piece being combined in a lattice shape.
Thus, the shield member 1 is configured of multiple shield plates 1a made up of a metal plate piece being combined in a lattice shape, and accordingly, an advantage is yielded wherein the multiple openings 1b having electrical conductivity may readily be formed.
Also, with the socket for electronic components 100 according to the present embodiment, the elastic member 3 is configured to be employed as a mode of the contact bar B10 where multiple sets of the first elastic portion 3b and second elastic portion 3c are provided to the base portion 3a.
Thus, the multiple elastic members 3 are collectively taken as the contact bar B10, and accordingly, advantages are yielded wherein product assembly is facilitated, and also, as compared to a case where the elastic member 3 where one set of the first elastic portion 3b and second elastic portion 3c are disposed is individually disposed on the base portion 3a, deformation or the like of the first elastic portion 3b and second elastic portion 3c hardly occurs, and a socket for electronic components with electrical conduction being stabilized may be provided.
Also, with the socket for electronic components 100 according to the present embodiment, in the event that the contact unit U10 is employed for grounding, the elastic member 3 is configured wherein the shield member 1 is ground-connected on a side closer to the wiring board PB than the ground contacting portion 2a of the moving member 2, that is, the contacting portion 3d and shield member 1 are electrically connected by a method such as connection by a circuit, or connection by an electroconductive adhesive agent or solder, or the like.
Thus, the contact unit U10 is grounded with two portions of the upper portion of the shield member 1 and the lower portion of the shield member 1. In the event that grounding is performed with any one of the upper portion of the shield member 1 and the lower portion of the shield member 1, and the contact unit U10, between the contact portion 2b and contacting portion 3d may be regarded as circuits connected in series. Also, in the event that grounding is performed with the two portions of the upper portion and lower portion of the shield member 1, between the contact portion 2b and contacting portion 3d may be regarded as circuits connected in parallel. When comparing resistance between the contact portion 2b and contacting portion 3d in the event that grounding is performed with the two portions of the upper portion and lower portion of the shield member 1 and in the event that grounding is performed with the contact portion 2b and the two portions of the upper portion and lower portion of the shield member 1, resistance decreases in the event that grounding is performed with the two portions of the upper portion and lower portion of the shield member 1. Accordingly, grounding is performed with the two portions of the upper portion and lower portion of the shield member 1, and accordingly, an advantage is yielded wherein noise is hardly picked up, and high frequency is readily handled.
Second Embodiment
Hereinafter, a socket for electronic components 200 according to a second embodiment will be described with reference to FIGS. 8 and 9. FIGS. 8A to 8C are perspective views illustrating the configuration of the socket for electronic components 200 according to the second embodiment. Note that in FIGS. 8A to 8C, in order to facilitate description, only one set of contact units U20 and shield member 1 covering surroundings thereof are illustrated. FIGS. 9A and 9B are perspective views illustrating a moving member 5 according to the second embodiment, FIG. 9A is a perspective view illustrating a state in which the moving member 5 according to the second embodiment is viewed from above, and FIG. 9B is a perspective view illustrating a state in which the moving member 5 according to the second embodiment is viewed from below. The socket for electronic components 200 according to the present embodiment differs in the shape of the moving member 2 of the socket for electronic components 100 according to the first embodiment.
In the following description, with regard to the common components as with the socket for electronic components 100 according to the first embodiment, detailed description will be omitted, and also, with regard to component names and component reference numerals, description will be made using the same as with the socket for electronic components 100.
The socket for electronic components 200 includes, as illustrated in FIG. 8A, the shield member 1, contact unit U20, and housing 4 (see FIG. 1). The contact unit U20 is made up of the moving member 5 and elastic member 3 (see FIG. 2).
The shield member 1, elastic member 3, and housing 4 are common to the socket for electronic components 100 according to the first embodiment, and accordingly, detailed description will be omitted.
The moving member 5 is, as illustrated in FIGS. 9A and 9B, made up of a synthetic-resin material and a metal plate, and formed in a generally rectangular parallelepiped shape. The moving member 5 includes a ground contacting portion 5a which may electrically conduct the shield member 1, a contact portion 5b having electrical conductivity which may come into contact with the electrode terminal TM of an electronic component, an electroconductive portion 5c which electrically conducts the contact portion 5b, and a pedestal portion 5f. Note that the pedestal portion 5f is made up of a synthetic-resin material, the ground contacting portion 5a and contact portion 5b and electroconductive portion 5c are formed of one metal plate, and the ground contacting portion 5a, contact portion 5b, and electroconductive portion 5c mutually electrically conduct. Also, the pedestal portion 5f formed in a generally rectangular parallelepiped shape includes the contact portion 5b on the upper face (face on Z1 side), includes the ground contacting portion 5a formed protruding in two directions which laterally face to each other from the upper face, and includes the electroconductive portion 5c on the lower face (face on Z2 side). Note that distance dimension between the tips of the ground contacting portion 5a formed protruding in the two directions which face to each other is longer than the interval dimension of the shield plates 1a.
Also, the electroconductive portion 5c includes a first inclined face portion 5d where a face inclined in one side against the moving direction (Z1-Z2 direction) of the moving member 5 is formed, and a second inclined face portion 5e where a face inclined in the other side against the moving direction (Z1-Z2 direction) of the moving member 5 is formed, and a protruding portion 5g formed protruding in the Z1 direction is formed on the contact portion 5b.
Next, the configuration of the socket for electronic components 200 will be described with reference to FIGS. 8A to 8C. The socket for electronic components 200 has, as illustrated in FIGS. 8A to 8C, a configuration wherein the contact unit U20 is disposed in the openings 1b of the lattice of the shield member 1. At this time, the moving member 5 is disposed on the elastic member 3 in a state in which the first inclined face portion 5d is in contact with the first elastic portion 3b, and also, the second inclined face portion 5e is in contact with the second elastic portion 3c. Thus, the elastic member 3 electrically conducts with the wiring of the wiring board PB, and also electrically conducts with the electroconductive portion 5c of the moving member 5, and enables electrically conducting with the electrode terminal TM of the electronic component, via the contact portion 5b. Also, the moving member 5 is, in accordance with coming into contact with the electronic component, disposed so as to move in the pressed direction.
Next, the operation of the socket for electronic components 200 will be described with reference to FIGS. 8A to 8C.
Upon an electronic component being attached to the socket for electronic components 200, first, as illustrated in FIG. 8B, the electrode terminal TM of the electronic component comes into contact with the contact portion 5b of the moving member 5, and between the electronic component and the socket for electronic components 200 electrically conduct. Thereafter, as illustrated in FIG. 8C, upon the moving member 5 being pressed in a direction of an arrow D, in the same way as with socket for electronic components 100 according to the first embodiment, the first elastic portion 3b (see FIG. 7C) is bent along the first inclined face portion 5d (see FIG. 8B), and also, the second elastic portion 3c (see FIG. 7C) is bent along the second inclined face portion 5e (see FIG. 8B), and accordingly, the moving member 5 moves to the direction of the arrow D, and electrical conduction between the electronic component and the socket for electronic components 200 is stabilized. The moving member 5 moves in the direction of the arrow D, and accordingly, the ground contacting portion 5a comes close to the upper edge portion of the shield member 1. Distance dimension between the tips of the ground contacting portion 5a formed protruding in the directions which face to each other is longer than interval dimension between the shield plates 1a, and accordingly, the ground contacting portion 5a comes into contact with the upper edge portion of the shield member 1. Thus, in the event that the contact unit U20 is for grounding, the ground contacting portion 5a and the upper edge portion of the shield member 1 electrically conduct, and grounding is performed. The shield plate 1a in a portion corresponding to the contact unit U20 which is not for grounding has been subjected to coating or plating with insulation properties, and even when the ground contacting portion 5a of the contact unit U20 which is not for grounding comes into contact with the shield member 1, grounding is not performed. Also, in the event that the contact unit U20 is employed for grounding, though not illustrated in the drawing, the contacting portion 3d (see FIG. 7B) and shield member 1 are electrically connected by a method such as connection by a circuit, or connection by an electroconductive adhesive agent or solder, or the like.
Note that, upon the electronic component being detached from the socket for electronic components 200, the moving member 5 is returned to the position in the initial state illustrated in FIG. 8B by the pressing force of the first elastic portion 3b and second elastic portion 3c.
Hereinafter, advantages owing to the present invention being employed will be described.
The socket for electronic components 200 according to the present embodiment is configured wherein the moving member 5 is formed in a rectangular parallelepiped shape, includes the contact portion 5b on the upper face, and includes at least the ground contacting portion 5a formed externally protruding in the side faces, and includes the electroconductive portion 5c on the lower face, the contact portion 5b, electroconductive portion 5c, and grounding contacting portion 5a mutually electrically conduct, distance dimension between the tips of the ground contacting portion 5a is longer than interval dimension between the shield plates 1a, and in the event that the contact unit U10 is for grounding, in accordance with movement of the moving member 5, the ground contacting portion 5a and the upper edge portion of the shield member 1 are brought into contact, and electrically conduct, thereby performing grounding.
Thus, the ground contacting portion 5a formed externally protruding from the side faces of the moving member 5 comes into contact with the upper edge portion of the shield member 1, and grounding is performed, and accordingly, an advantage is yielded wherein a portion to perform electrical conduction and a portion to perform grounding may further be brought close, and the high-frequency property may further be improved.
Also, thus, the grounding contacting portion 5a and the upper edge portion of the shield member 1 are brought into contact, and accordingly, the moving member 5 is prevented from being unnecessarily pressed into the lattice of the shield member 1. Accordingly, it may be prevented that the elastic member 3 is deformed by unreasonable pressing, and is not returned to the initial position, and results in electroconductive failure.
Third Embodiment
Hereinafter, a socket for electronic components 300 according to a third embodiment will be described with reference to FIGS. 10A to 10C. The socket for electronic components 300 according to the present embodiment differs in the configurations of the contact unit U10 according to the first embodiment and the contact unit U20 according to the second embodiment. In the following description, with regard to components common to the socket for electronic components 100 according the first embodiment and socket for electronic components 200 according the second embodiment, detailed description will be omitted, and also, description will be made using the same component names and component reference numerals as with the socket for electronic components 100 and the socket for electronic components 200. FIGS. 10A to 10C are diagrams illustrating the configuration of the socket for electronic components 300 according to the third embodiment, FIG. 10A is a perspective view illustrating the appearance of a contact unit U30, FIG. 10B is a side view illustrating the initial state of the contact unit U30, and FIG. 10C is a side view illustrating the operation state of the contact unit U30. Note that, in FIGS. 10A to 10C, in order to facilitate description, the housing 4 is not illustrated, and only the shield member 1 and contact unit U30 are illustrated.
The socket for electronic components 300 includes, as illustrated in FIGS. 10A to 10C, the shield member 1, contact unit U30, and housing 4 (see FIG. 1).
The shield member 1 and housing 4 are common to the socket for electronic components 100 according to the first embodiment and socket for electronic components 200 according to the second embodiment, and accordingly, detailed description will be omitted.
The contact unit U30 includes, as illustrated in FIGS. 10A to 10C, a base portion 7a made up of a synthetic-resin material and formed in a rectangular parallelepiped shape, an elastic portion 7b made up of a metal plate and formed in a leaf spring shape extending from the upper face (Z1 side face) of the base portion 7a to a direction perpendicular to the upper face (Z1-Z2 direction) so as to meander with a predetermined width dimension and a predetermined pitch, and a contacting portion 7c made up of a metal plate and formed along the lower face (Z2 side face) of the base portion 7a which is in contact with the wiring of the wiring board PB. In the vicinity of the tip of the elastic portion 7b, a contact portion 7d which has electroconductivity and is in contact with the electrode terminal TM of an electronic component, and an electroconductive portion 7e which electrically conducts the contact portion 7d are formed. Also, with the present embodiment, multiple portions generally in parallel with a direction perpendicular to the upper face of the base portion 7a (Z1-Z2 direction) are formed in the elastic portion 7b. The portions generally in parallel with a direction perpendicular to the upper face of the base portion 7a (Z1-Z2 direction) are formed in a portion where the elastic portion 7b meanders with a predetermined width dimension, and serve as ground contacting portions 7f.
Also, with the diagrams illustrated in FIGS. 10A to 10C, the contact unit U30 has a configuration wherein one elastic portion 7b is provided to the base portion 7a, but with the present embodiment, as with the first embodiment, the multiple elastic portions 7b may be employed with the mode of a contact bar (not illustrated) provided to the base portion 7a.
Next, the configuration of the socket for electronic components 300 will be described with reference to FIG. 10B. The socket for electronic components 300 has, as illustrated in FIG. 10B, a configuration wherein the contact unit U30 is disposed in the openings 1b of the lattice of the shield member 1. The elastic member 7 electrically conducts the wiring of the wiring board PB, and accordingly, electrical conduction with the electrode terminal TM of the electronic component may be performed via the contact portion 7d (elastic portion 7b). Also, the contact portion 7d (elastic portion 7b) is disposed so as to move by being bent in the pressed direction, in accordance with coming into contact with the electronic component.
Also, in the event that the contact unit U30 is for grounding, grounding may be performed by the ground contacting portions 7f and the shield member 1 being brought into contact. Note that the shield plate 1a in a portion corresponding to the contact unit U30 which is not for grounding has been subjected to coating or plating with insulation properties, and grounding is not performed even when the ground contact portions 7f of the contact unit U30 which is not for grounding and the shield member 1 are brought into contact.
Next, the operation of the socket for electronic components 300 will be described with reference to FIGS. 10B and 100.
Upon an electronic component being attached to the socket for electronic components 300, first, as illustrated in FIG. 10B, the electrode terminal TM of the electronic component and the contact portion 7d are brought into contact, and the electronic component and the electronic components 300 are electrically connected. Thereafter, as illustrated in FIG. 100, upon the contact portion 7d being pressed in a direction of an arrow E, the elastic portion 7b is bent, the contact portion 7d is extended in a direction orthogonal to the direction where the contact portion 7d is pressed (X1-X2 direction), and the ground contact portions 7f and the inner face of the shield member 1 are brought into contact. In the event that the contact unit U30 is for grounding, grounding may be performed by the ground contacting portions 7f and the inner face of the shield member being brought into contact and electrically conducting. Also, in the event that the contact unit U30 is employed for grounding, though not illustrated in the drawing, the contacting portion 7c and shield member 1 are electrically connected by a method such as connection by a circuit, connection by an electroconductive adhesive agent or solder, or the like.
Note that, upon the electronic component being detached from the socket for electronic components 300, the contact portion 7d is returned to the position in the initial state illustrated in FIG. 10B by the elastic force of the elastic portion 7b.
Hereinafter, advantages owing to the present embodiment being employed will be described.
The socket for electronic components 300 according to the present embodiment is configured wherein, in the event that the contact unit U30 is for grounding, the contact unit U30 includes the contact portion 7d having electrical conductivity to be in contact with the electrode terminal TM of an electronic component, the electroconductive portion 7e which electrically conducts with the contact portion 7d, the ground contacting portions 7f, the based portion 7a which is able to be disposed in the housing 4, and the elastic portion 7b formed in a leaf spring shape extending in a direction where an electronic component is to be disposed from the base portion 7a so as to meander with a predetermined width dimension and a predetermined pitch, the contact portion 7d and electroconductive portion 7e are formed in the vicinity of the tip of the elastic portion 7b, and also, the ground contacting portions 7f are formed in a portion meandering up to a predetermined width dimension of the elastic portion 7b, and in accordance with the contact portion 7d coming into contact with the electrode terminal TM of the electronic component, the elastic portion 7b is pressed against a direction where the based portion 7a is disposed, bent in the pressed direction, and also extends in a direction orthogonal to the pressed direction, the ground contacting portions 7f and shield member 1 electrically conduct, and grounding is performed.
Thus, the configuration of the contact unit U30 is facilitated by forming the contact unit U30 using the elastic member 7 alone, a component configured to perform electrical conduction agrees with a component configured to perform grounding, and a portion to perform electrical conduction and a portion to perform grounding may be brought closer, the high-frequency property may be improved. Accordingly, an advantage is yielded wherein a socket for electronic components having a simple configuration which handles high frequency may be provided.
Fourth Embodiment
Hereinafter, a socket for electronic components 400 according to a fourth embodiment will be described with reference to FIGS. 11A to 11C. With the socket for electronic components 400, its contact unit having a configuration different from the configurations of the contact unit U10 according to the first embodiment, the contact unit U20 according to the second embodiment, and the contact unit U30 according to the third embodiment. In the following description, with regard to components common to the socket for electronic components 100 according to the first embodiment, the socket for electronic components 200 according to the second embodiment, and the socket for electronic components 300 according to the third embodiment, detailed description will be omitted, and also, with regard to component names and component reference numerals thereof, description will be made using the same as with the socket for electronic components 100 according to the first embodiment, the socket for electronic components 200 according to the second embodiment, and the socket for electronic components 300 according to the third embodiment. FIGS. 11A to 11C are diagrams illustrating the configuration of the socket for electronic components 400 according to the fourth embodiment, FIG. 11A is a perspective view illustrating the appearance of a contact unit U40, FIG. 11B is a side view illustrating the initial state of the contact unit U40, and FIG. 11C is a side view illustrating the operation state of the contact unit U40. Note that, in FIGS. 11A to 11C, in order to facilitate description, the housing 4 is not illustrated, and only the shield member 1 and contact unit U40 are illustrated.
The socket for electronic components 400 includes, as illustrated in FIGS. 11A to 11C, the shield member 1, contact unit U40, and housing 4 (see FIG. 1). The contact unit U40 is, as illustrated in FIGS. 1 and 2, configured of a moving member 9, an elastic member 10, and a holding member 11 which may hold the moving member 9 and elastic member 10.
The shield member 1 and housing 4 are common to those of the socket for electronic components 100 according to the first embodiment, socket for electronic components 200 according to the second embodiment, and accordingly, detailed description will be omitted.
The moving member 9 is, as illustrated in FIGS. 11B and 11C, made up of a metal material having electrical conductivity, and formed in a plate shape. The moving member 9 includes an electroconductive portion 9a formed in a plate shape, an axial portion 9b is formed on one edge side of the electroconductive portion 9a, and a contact portion 9c and a ground contacting portion 9d are formed on the other edge side of the electroconductive portion 9a. The axial portion 9b is formed in a cylindrical shape so as to roll up one edge of the electroconductive portion 9a in the other edge direction. The contact portion 9c is formed by performing bending on the other edge of the electroconductive portion 9a in an arc shape. Also, the contact portion 9c also serves as the ground contacting portion 9d.
The elastic member 10 is, as illustrated in FIGS. 11A to 11C, made up of a metal material having electrical conductivity, and is formed in a long plate shape. The elastic member 10 includes a pressing portion 10a which has been subjected to bending in an arc shape at one edge thereof, and a contacting portion 10b which electrically conducts with the wiring of the wiring board PB on the other edge thereof.
The holding member 11 is, as illustrated in FIG. 11A, made up of a synthetic-resin material. The holding member 11 includes a base portion 11a formed in a rectangular parallelepiped shape, and a housing portion 11b formed in a wall shape in a direction perpendicular to a certain face from three sides that make up a certain face of the base portion 11a. A storage portion 11c, which may store the moving member 9 and elastic member 10, is formed in the housing portion 11b.
With the moving member 9, as illustrated in FIGS. 11A to 11C, the axial portion 9b is held at the housing portion 11b of the holding member 11. At this time, the axial portion 9b is sandwiched by two faces which face, in the vicinity of the tip of the housing portion 11b on a side separated from the base portion 11a, and the moving member 9 is axially supported so as to turn with the axial portion 9b as the axis. Also, with the elastic member 10, the pressing portion 10a is extended within the storage portion 11c of the housing portion 11b, sandwiching the base portion 11a of the holding member 11, and also the contacting portion 10b is extended along a face on a side facing the housing portion 11b, of the base portion 11a. Also, the pressing portion 10a of the elastic member 10 comes into contact with the electroconductive portion 9a of the moving member 9, and presses the moving member 9 in a direction where the contact portion 9c separates from the base portion 11a. Also, the moving member 9 may turn against the pressing force of the elastic member 10. In this manner, the contact U40 is configured.
Also, in the diagrams illustrated in FIGS. 11A to 11C, the contact unit U40 is configured wherein one set of the moving member 9 and elastic member 10, and the housing portion 11b are provided to the base portion 11a, but with the present embodiment, as with the first embodiment, the contact unit U40 may be employed as the mode of a contact bar (not illustrated) where multiple sets of the moving member 9 and elastic member 10, and the housing portion 11b are provided to the base portion 11a.
Next, the configuration of the socket for electronic components 400 will be described with reference to FIGS. 11B and 11C. The socket for electronic components 400 has a configuration wherein the contact unit U40 is disposed in the openings 1b of the lattice of the shield member 1, and the shield member 1 and contact unit U40 are held in the housing 4 (see FIG. 1). With the contact units U40 stored in the openings 1b of the lattice of the shield member 1, the tip of the housing portion 11b of the holding member 11 protrudes from the upper edge portion (edge portion on Z1 side) of the shield member 1, and also, the contact portion 9c of the moving member 9 is disposed in a position where the contact portion 9c may come into contact with the shield member 1 by turning. In this manner, the socket for electronic components 400 is formed.
Also, in the event that the contact unit U40 is for grounding, grounding may be performed by the ground contacting portion 9d and shield member 1 being brought into contact. Note that the shield plate 1a in a portion corresponding to the contact unit U40 which is not for grounding has been subjected to coating or plating with insulation properties, and accordingly, grounding is not performed even when the ground contacting portion 9d of the contact unit U40 which is not for grounding and the shield member 1 are brought into contact.
Next, the operation of the socket for electronic components 400 will be described with reference to FIGS. 11A to 11C.
Upon an electronic component being attached to the socket for electronic components 400, first, as illustrated in FIG. 11B, the electrode terminal TM of the electronic component and the contact portion 9c of the moving member 9 are brought into contact, and between the electronic component and the socket for electronic components 400 electrically conducts. Thereafter, as illustrated in FIG. 11C, in accordance with the contact portion 9c coming into contact with the electrode terminal TM of the electronic component, upon the moving member 9 being pressed in a direction of an arrow F, the moving member 9 turns with the axial portion 9b as the center against the pressing force of the elastic member 7, and the contact portion 9c comes into contact with the shield member 1 while being bent. The contact portion 9c also serves as the ground contacting portion 9d, and accordingly, in the event that the contact unit U40 is for grounding, grounding may be performed by the contact portion 9c and the inner face of the shield member 1 being brought into contact and electrically conducts. Note that grounding may be performed by the contact portion 9c and the upper edge portion of the shield member 1 being brought into contact. Also, in the event that the contact unit U40 is employed for grounding, though not illustrated in the drawings, the contact portion 10b and shield member 1 are electrically connected by a method such as connection by a circuit, connection by an electroconductive adhesive agent or solder, or the like.
Note that, upon the electronic component being detached from the socket for electronic components 400, the moving member 9 is returned to the position in the initial state illustrated in FIG. 11B by the pressing force of the elastic portion 10.
Hereinafter, advantages owing to the present invention being employed will be described.
The socket for electronic components 400 according to the present embodiment is configured wherein the moving member 9 includes the axial portion 9b on one edge side which is axially supported so as to turn, includes the contact portion 9c also serving as the ground contact portion 9d on the other edge side, includes the electroconductive portion 9a between the contact portion 9c and the axial portion 9b, and the elastic member 10 comes into contact with the electroconductive portion 9a to press the moving member 9 in a rotational direction where the contact portion 9c is separated from the shield member 1, and in the event that the contact unit U10 is for grounding, the contact portion 9c is pressed in a direction against the pressing force of the elastic member 10 to make the moving member 9 turn, and the contact portion 9c electrically conducts with the shield member 1, thereby performing grounding.
Thus, the contact portion 2b which is a portion configured to perform electrical conduction also serves as the ground contacting portion 5a, thereby enabling grounding to be performed at a portion further closer to the portion to perform electrical conduction, and an advantage is yielded wherein a socket for electronic components of which the high-frequency property is further improved may be provided.
Also, the socket for electronic components 400 according to the present embodiment may be configured wherein, in the event that the contact unit U10 is for grounding, in accordance with the contact portion 9c coming into contact with the electrode terminal TM of the electronic component, the contact portion 9c is pressed in a direction against the pressing force of the elastic member 10 to make the moving member 9 turn, and the contact portion 9c is brought into contact with the upper edge portion of the shield member 1 and electrically conducts therewith, thereby performing grounding.
Thus, grounding is performed by the contact portion 9c electrically conducting with the upper edge portion of the shield member 1, thereby enabling the portion to perform electrical conduction to be further brought closer to the portion to perform grounding, and an advantage is yielded wherein the high-frequency property is further improved.
Also, the socket for electronic components 400 according to the present embodiment is configured wherein the tip portion of the housing portion lib of the holding member 11 protrudes from the upper edge portion of the shield member 1.
Thus, even in the event that an electronic component has been attached so as to be pressed against the socket for electronic components 400 with excessive force, force is not excessively propagated to the elastic member 10 by the electronic component and the tip portion of the housing portion 11b being brought into contact, whereby return failure or connection failure or the like due to deformation of the contact portion 9c may be prevented.
As described above, though the sockets for electronic components according to embodiments of the present invention have specifically been described, the present invention is not restricted to the above-mentioned embodiments, and the embodiments may be implemented by various modifications being made without departing from the essence of the present invention. For example, the embodiments may be implemented by being modified as follows, and these embodiments are also encompassed in the technical range of the present invention.
- (1) With the first embodiment, though the number of protrusions provided to the contact portion 2b in FIG. 1 is one, there may be multiple protrusions as illustrated in FIGS. 2 and 3. Contact is further stabilized by providing the multiple protrusions, and also at the time of turning in accordance with movement of the moving member 2, the protrusions do not serve as the rotating center. Therefore, the protrusions slidably comes into contact with the electrode terminal TM of the electronic component, and accordingly, even if dust or the like adheres thereto, self-cleaning effects act such that an advantage is yielded wherein connection failure is not readily caused.
- (2) With the first embodiment, though the ground contacting portion 2a is provided to the side faces of the moving member 2, in the event that the contact unit U10 is not for grounding, the ground contact portion 2a may be omitted. For example, as illustrated in FIGS. 12A and 12B, the configuration equivalent to the ground contacting portion 2a according to the first embodiment is not provided to a moving member 12, a ground contacting member 13 of another component may be employed instead. At this time, the moving member 12 is, as illustrated in FIG. 12A, configured wherein as with the moving member 2, a contact portion 12a is provided thereon, and an electroconductive portion 12b is provided on the lower face, and only in the event that a contact unit U50 using the moving member 12 is for grounding, as illustrated in FIG. 12B, the ground contacting member 13 is retained so as to cover the moving member 12 therewith, and accordingly, the ground contacting member 13 and contact portion 12a electrically conduct, and also, a portion of the side faces of the moving member 12 is covered with the ground contacting member 13, and the same function as with the ground contacting portion 2a according to the first embodiment is obtained. According to such a configuration being employed, there is no need to change coating or plating with insulation properties for the shield member 1 in the event that the contact unit U50 (only the moving member 12 and ground contacting member 13 are described) is for grounding or in the event of not for grounding, and assembly may readily be performed, and costs may be reduced. Also, with the second embodiment as well, if the same configuration is employed, the same advantage may be obtained.
- (3) With the first embodiment, though the ground contacting portion 5a is formed protruding in two directions that laterally face from the upper face (face on Z1 side) of the pedestal portion 5f, the directions are not restricted to the two directions that face, and for example, the ground contacting portion 5a may be formed protruding in four directions.
Patent Grant
9083120
