TW201920969A - Electrical connection device comprising a substrate and a socket portion - Google Patents

Abstract

The object of the present invention is to improve the contact load of an object to be inspected, thereby improving the durability of the device, achieving an improved electrical contact between the object to be inspected and the pattern of a substrate, and performing an electric current test of the object to be inspected with high precision. The solution is an electrical connection device which comprises a substrate on which a wiring is formed, a socket portion provided on the substrate, and an electrode portion of an object to be inspected, which is mounted on the socket portion electrically connected to the electrical connection device of the wiring formed on the substrate. The socket portion is provided with a plurality of contactors having tip ends in contact with the electrode portion of the object to be inspected, a plurality of connection members that are in contact with the contactors and the wiring on the substrate, and support bodies elastically support the rotation of each contactor. The support bodies are received in a hole portion. Each of the connection members is provided with a base portion in contact with the inner wall surface of the hole portion, and a bottom portion electrically connected to the wiring on the substrate. Each contactor is electrically connected to the base portion and the bottom portion of the connection member.

Description

Electrical connection device

The present invention relates to an electrical connection device, for example, an electrical connection device that can be applied to a flat-shaped test object such as an integrated circuit for use in an electric current test.

Previously, during the manufacturing process of the integrated circuit, inspections (eg, packaging test and final test) regarding the electrical characteristics of the packaged integrated circuit were performed. In this kind of inspection, an electrical connection device (so-called test socket and socket) that electrically contacts the electrode terminal of the held integrated circuit to the contactor while detachably holding the circuit under test, that is, the integrated circuit is used. board). The integrated circuit mounted on the electrical connection device is electrically connected to the inspection device (testing machine) through the electrical connection device, and the electrical characteristics are inspected.

Patent Document 1 discloses an electrical connection device assembled on a substrate. A built-in contactor is used to separately form a plurality of terminals of an object to be inspected mounted on the electrical connection device, and corresponding terminals are formed on the substrate. An electrical connection device in which a plurality of conductive portions are in contact with and electrically connected. Each contact element has a tip end having a tip contacting the terminal of the object to be inspected, and a lower end surface having a convexly curved portion that contacts the conductive portion of the substrate. The plurality of contact elements are supported in a housing assembled on the substrate, and are elastically supported by a needle clip, which is an elastic member. In addition, the plurality of contact sub-systems are elastically supported from below by a rubber member disposed below and near the middle between the tip and the portion supported by the needle clamp.

The electrical connection device described in Patent Document 1 uses a pin clip and the restoring force of the rubber member to pull upwards on the tip of the contactor. Therefore, the electrode of the subject can be contacted with the tip of the contactor with a predetermined needle pressure, and the tip of the contactor can be contacted. Since the scrubbing operation is performed, stable measurement can be performed while the subject to be in good contact with the contactor. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2008-89555

[Problems to be Solved by the Invention]

The electrical connection device is, for example, when the terminal of the test object is formed by welding. In order to obtain a good and stable contact, it is better to make the terminal of the test object contact the contactor with a stronger pressing load because the surrounding dust, It is preferable that the influence of the foreign body of the test object is to further strengthen the scrubbing so that the contact is not reduced.

However, when the test object is brought into contact with the contactor with a high load, the substrate is strongly pressed against the end surface of the lower end of the contactor, and the surface of the substrate pattern is strongly slid. Therefore, the substrate pattern may be damaged. In addition, when the stroke of the contactor is increased and the wiping operation is increased, the risk of damage to the substrate pattern is further increased.

Therefore, in view of the above-mentioned problems, it is required that the terminals of the test object can be brought into contact with the contactor at a higher load than before. Even in this situation, the damage of the substrate pattern of the test object can be suppressed, and the test object and the substrate pattern can be stabilized well. An electrical connection device capable of conducting electrical contact and capable of conducting a current test of a test object. [Means to solve the problem]

In order to solve the related problems, the electrical connection device of the present invention includes a substrate on which wiring is formed, and a socket portion provided on the substrate, and an electrode portion of an object to be mounted on the socket portion is electrically connected to the electrode portion formed on the substrate. The electrical connection device for wiring of a substrate is characterized in that: (1) the socket part is a plurality of contact members having a tip having a tip in contact with the electrode part of the object to be inspected, and a plurality of connection members having the contacts in contact with the wiring on the substrate; A support that elastically supports the rotation of each contact and accommodates them in the hole portion; (2) Each connecting member has a base portion in contact with the inner wall surface of the hole portion and a bottom portion electrically connected to the wiring of the substrate; (3) The contactor is electrically connected to the base and the bottom of the connection member. [Effect of the invention]

According to the present invention, the contact between the terminal of the test object and the contactor can be set to a high load, and even in this situation, the damage of the substrate pattern can be reduced, and the test object and the substrate pattern can have good electrical connectivity. It is possible to perform the energization test of the subject with high accuracy.

(A) Main Embodiments Hereinafter, embodiments of the electrical connection device of the present invention will be described in detail with reference to the drawings.

(A-1) Structure of the embodiment The structure of the electrical connection device 1 of the embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the electrical connection device 1, FIG. 2 is a bottom view of the socket portion 20 constituting the electrical connection device 1, and FIG. 3 is a sectional view taken along the line AA of the electrical connection device 1 shown in FIG. FIG. 4 is a cross-sectional perspective view showing a state in which the contact sub-assembly 40 is housed in the housing portion 24 constituting the socket portion 20.

As shown in FIG. 1, the electrical connection device 1 according to the embodiment includes a substrate 10 and a socket portion 20 provided on the substrate 10.

The electrical connection device 1 is connected to an inspection device (also referred to as a "tester") for electrical signals required for transmission and reception tests, and inspects the electrical characteristics of the subject 51 to be accommodated. For example, an electrical connection device can be used as a test IC socket used in the electrical test (for example, package test and final test) of an integrated integrated circuit that has been assembled in the manufacturing process of the integrated circuit that is the subject 51 to be inspected. 1.

The electrical connection device 1 accommodates a subject 51 in an opening 14 located at a central portion of the housing portion 20 (see FIG. 3). For example, by a method not shown, using the predetermined indentation load, the object to be inspected 51 is pushed downward, that is, pushed upward from the opening 14 to the substrate 10 side, and the object to be inspected 51 is mounted on the electrical connection.装置 1。 Device 1. Here, the terminal 511 of the object 51 is exemplified in a case where it is formed by solder plating or the like. The indentation load of the test object 51 having the terminal 511 formed of such a material is preferably a high load, but it is not particularly limited, and may be, for example, about 70 gf to 80 gf.

The substrate 10 is a wiring substrate formed of, for example, an electrically insulating member. A wiring pattern 11 made of a conductive metal material is formed on the surface of the substrate 10 by, for example, a printed wiring technology. The socket portion 20 is fixed on the surface of the substrate 10 on which the wiring pattern 11 is formed, for example, by a fixing member 15 such as a screw or a positioning pin.

As shown in FIGS. 1 and 3, the wiring pattern 11 on the substrate 10 is formed in a strip shape at a position corresponding to the position of each contact 12. That is, the wiring pattern 11 is formed on the substrate 10 so as to be in contact with the lower portion of each contact 12 and electrically connected thereto.

The wiring pattern 11 extends to the outside of the socket portion 20 as shown in FIG. 1 and is connected to a wiring pattern on the inspection device side (not shown). In this embodiment, from each side of the socket section 20, six wiring patterns 11 extend side by side to the outside of the socket section 20 at a predetermined interval.

The socket portion 20 includes a frame portion 26, a contact subassembly 40 including a plurality of contacts 12 that are terminals (electrode portions) 511 electrically connected to the subject 51, and a housing portion 24 that accommodates the contact subassembly 40. In addition, the electrical connection device 1 may be provided with a plurality of socket portions 20 on the same substrate 10.

The frame portion 26 is formed of an electrically insulating member and is fixed to the upper surface of the case portion 24. The frame portion 26 is a substantially rectangular shape when viewed from above (moreover, the substantially rectangular shape includes a square), and an opening portion 14 having a rectangular opening is provided in a central portion of the frame portion 26 to receive an upper and lower hole for receiving the subject 51.

The lower side of the inner wall surface of the opening portion 14 of the frame portion 26 is provided with a receiving wall surface 14b (see FIG. 3) perpendicular to the substrate 10 in order to be able to attach and detach the object to be inspected and to position the object 51 to be accommodated. The inside shape of the front view is formed to be approximately the same as the outer shape of the subject 51 to be mounted, or a slightly larger rectangular shape. In addition, the inner wall surface side of the opening portion 14 has an inclined surface 14 a that is inclined so that the opening is expanded toward the upper side of the frame portion 26 in order to facilitate mounting of the subject 51. That is, the upper sides of the four side surfaces of the opening portion 14 are each an inclined surface 14a.

The case portion 24 is a member that houses the contact sub-assembly 40 and is combined with the frame portion 26 and the substrate 10 to hold the contact sub-assembly 40 and is formed as an electrically insulating member. The case portion 24 is provided on the substrate 10 as shown in FIG. 3, and a frame portion 26 is provided on the upper surface of the case portion 24. The outer shape of the case portion 24 in a plan view is a substantially rectangular shape having the same shape as the outer shape of the frame portion 26 in plan view, and the outer shape of the case portion 24 and the frame portion 26 overlap with each other in plan view.

A hole portion 18 is provided at the housing portion 24 to accommodate the terminal 511 of the subject 51 to be accommodated in the opening portion 14 of the frame portion 26 to receive the sub-assembly 40. In this embodiment, the test object 51 has a substantially rectangular shape in plan view, and the terminals are arranged side by side along the four sides of the bottom surface thereof. Therefore, the four sides of the hole portion 18 and the opening portion 14 are provided in parallel. In addition, the hole portion 18 may be provided at a position corresponding to the side of the opening portion 14 according to the position of the terminal 511 of the inspection object 51. For example, in a rectangular inspection object 51 in plan view, the terminal 511 is arranged along a set of opposite sides. During installation, the hole portion 18 is preferably provided at a position corresponding to a group of opposite sides of the opening portion 14.

Each of the hole portions 18 is provided with a plurality of slits 17 for individually accommodating the plurality of contacts 12, and a horizontal hole for accommodating a columnar support body for elastically supporting the plurality of contacts 12 accommodated in each of the slits 17, and is accommodated for supporting the contacts. The first horizontal hole 191 of the first support body 41 on the tip side of the child 12 and the space connected to the second horizontal hole 192 for supporting the second support body 42 on the rear end side of the child 12 are received.

The plurality of slits 17 constituting the hole portion 18 are vertically oriented to each side of the opening portion 14 and are arranged in parallel at a certain interval in parallel. The adjacent slits 17 are partitioned by the partition wall 25. The slit 17 is opened above and below the case portion 24.

The upper sides of the slits 17 located on the upper surface of the housing portion 24 are open, and the inside faces the opening portion 14 of the frame portion 26, and the outside is blocked by the lower surface of the frame portion 26. The upper opening portion facing the slit 17 of the opening portion 14 is a portion protruding from the tip of the contactor 12 toward the opening portion 14 so as to move up and down, and is also referred to as a contactor protruding opening 171 (see FIG. 5). The tips of the plurality of contactors 12 protruding from the contactor projection opening 171 can respectively contact the plurality of terminals 511 of the subject 51 mounted on the opening 14.

The first horizontal hole 191 portion and the second horizontal hole 192 portion constituting the hole portion 18 extend perpendicularly to the plurality of slits 17 through the recesses 251 and 252 of the plurality of partition walls 25 provided between the slits 17, respectively. Opened below the case portion 24. The first horizontal hole 191 and the second horizontal hole 192 intersect with the slits 17 at both ends and extend to both outer sides. Furthermore, in this embodiment, the first horizontal hole 191 is connected to the other first horizontal hole 191 which is adjacent at a right angle by an end.

The first horizontal hole 191 is located inside the slit 17 (that is, the side closer to the opening 14), and the second horizontal hole 192 is located further outside (the side away from the opening 14) than the first horizontal hole. If the first horizontal hole 191 is located below the contact projection 171, the first support 41 received in the first horizontal hole 191 can support the lower end of the contact 12. Therefore, it is preferable.

The first recessed portion 251 passing through the first horizontal hole 191 of the partition wall 25 provided in the slit 17 is a recessed portion extending vertically upward with the same width from the lower surface of the housing portion 24, and the deep end thereof has a semicircular shape. Similarly, the second recessed portion 252 passing through the second horizontal hole 192 of the partition wall 25 of the slit 17 is a recessed portion extending vertically upward with the same width from the lower surface of the housing portion 24, and the deep end thereof has a semicircular shape.

The opening of the hole portion 18 on the lower surface of the housing portion 24, the opening of the lower side of the slit 17, the opening of the first horizontal hole 191, and the opening of the second horizontal hole 192 are just aligned, and are blocked by the substrate 10. .

At the upper end portion of the slit 17, an extension groove 172 that is a groove extending outward with the same width is formed, and the bottom surface of the extension groove 172 becomes a section 173 (see FIG. 5) to which the connecting member 43 of the contact subassembly 40 is engaged, as will be described later.

Next, a structure of a contactor assembly 40 including a plurality of contacts 12 housed in the housing portion 24 according to the embodiment will be described with reference to FIGS. 5 to 6. FIG. 5 is an enlarged view showing the structure of the contact sub-assembly 40 housed in the case portion 24 in the cross-sectional view shown in FIG. 3, and FIG. 6 is a structure view showing the structure of the contact sub-assembly 40.

A contactor assembly 40 including a plurality of contactors 12 is incorporated in each hole portion 18 of the housing portion 24. The contact assembly 40 includes a plurality of contacts 12, a plurality of connection members 43, a first support 41, and a second support 42.

Each of the connection members 43 is formed of a conductive metal member, and exists between the contactor 12 and the wiring pattern 11 on the substrate 10 to electrically connect the contactor 12 and the wiring pattern 11. As shown in FIG. 5, the connecting member 43 is a plate-like member formed in a substantially L-shape, and has a base portion 432 standing upright to the substrate 10 and a bottom portion 431 extending parallel to the substrate 10. The thickness of the connection member 43 is formed to be the same as the thickness of the contact 12.

The connecting member 43 is housed in each slot 17 in pairs with the contact 12, the lower end surface of the bottom portion 431 contacts the wiring pattern 11 on the substrate 10, and the outer side end of the base portion 432 abuts the deep end of the inner wall of the slot 17. This method is arranged in the slit 17. An upper end surface of the bottom portion 431 of the connection member 43 and an inner side end surface of the base portion 432 are surfaces that contact the end surface of the contactor 12. As a result, the connecting member 43 exerts the sliding and pressing of the end face of the contactor 12 when the contactor 12 is pressed downward from the tip of the contactor 12 through the terminal 511 of the subject 51 to prevent the inner wall of the substrate 10, the wiring pattern 11, and the gap 17 from deep The effect of end damage.

If the width of the base portion 432 (the width in the left-right direction in FIG. 5) is larger than the width of the bottom portion 431 (the width in the up-down direction in FIG. 5), the heat radiation of the base portion 432 is improved, so it is preferable. In addition, if the deep end of the inner wall of the slit 17 is curved into a concave arc shape, a gap is formed between the outer end surface of the base portion 432 and the heat radiation property is improved.

On the upper portion of the base portion 432 of each connecting member 43, an upper end portion 434 protruding outward in the lateral direction is provided. The upper end portion 434 enters the extension groove 172 of the slit 17. The lower portion of the upper end portion 434 is in contact with the upper portion of the segment portion 173 and is hooked. Thereby, each connection member 43 can be stably supported. The upper surface of the upper end portion 434 is set to be the same as or lower than the position of the upper surface of the housing portion 24, thereby preventing the connection between the lower surface of the frame portion 26 and the upper surface of the housing portion 24 and preventing the connection member 43 Fly out. A concave portion 433 is formed on an end surface of a corner portion where the upper end portion 434 is connected to the base portion 432 to prevent damage when the upper end portion 434 is stressed.

The bottom portion 431 of each connection member 43 is provided so as to be electrically connected with the lower surface thereof to the strip-shaped wiring pattern 11 of the substrate 10. The bottom portion 431 extends along the longitudinal direction of the wiring pattern 11, so that each connection member 43 and the wiring pattern 11 of the substrate 10 can have good electrical connectivity.

The side end surface on the inner side of the base portion 432 of the connecting member 43 is slightly along the outer side on the upper side, and the contactor 12 can be smoothly rotated.

Each contact 12 is formed of a conductive metal member. As shown in FIG. 5, each contact 12 is a plate-shaped member formed in a substantially C-shape. The contact 12 has electrical properties with the terminal 511 of the subject 51 on the tip side (tip side). The connected tip has a rear end electrically connected to the base portion 432 of the connection member 43 on the rear end side.

The tip-side portion of the contactor 12 includes an arm portion 128 extending obliquely upward from the rear-end portion of the contactor 12 and a tip portion 121 extending substantially vertically upward from the end of the arm portion 128.

The arm portion 128 is narrowed toward the tip, and the end surface on the lower side of the arm portion 128 has a concave arc shape that is in contact with the arc portion diagonally above the rear side of the first support 41 and is supported. The first support end face 122. The first support end surface 122 is provided below the tip portion 121 and is located above the bottom portion 431 of the connection member 43. Accordingly, it is possible to cope with the high-pressure sinking load of the subject 51. When the first support end surface 122 is the tip portion 121 being pressed downward, it will be pulled upward obliquely by the restoring force of the compressed first support body, so that the warpage of the rear end portion of the contact 12 can be suppressed.

The tip portion 121 has a convex arc shape. Therefore, the tip portion 121 is pressed by the terminal 511 of the subject 51, and the arm portion 128 rotates. Even if the tip portion 121 is inclined forward, the tip portion 121 can be rotated. The curvature of the contact portion of the tip portion 121 is also stabilized and brought into contact.

The rear end portion of the contactor 12 is attached to the upper end thereof, and has a second arcuate arc-shaped second support end surface 123 that is in contact with the arcuate portion below and to the side of the second supporter 42 and is supported. In a state where the tip of the contactor 12 is not pressed, the first contact end surface 124 is in contact with the upper surface of the bottom portion 431 of the connection member 43 at the lower end, and the inner end surface of the base portion 432 of the connection member 43 is contacted at the rear end的 第二 contactEndface 125.

The end face below the contactor 12 between the first support end face 122 and the first contact end face 124 is a third contact end face 126 that is curved in a convex shape. In addition, the first contact end face 124 and the second contact end face 125 are substantially at right angles, and the corner portion thereof is a fourth contact end face 127 which is curved in a convex arc shape.

In a state in which the tip of the contactor 12 is pressed downward and the contactor 12 is rotated, the third contact end face 126 is in contact with and electrically connected to the bottom portion 431 of the connection member 43, and the fourth contact end face 127 is in contact with and electrically connected to Base portion 432 of the connecting member 43. The end surfaces from the third contact end surface 126 through the first contact end surface 124 and the second contact end surface 127 to the second contact end surface 125 are smoothly connected. When the contact 12 is rotated, the connection with the connection member 43 is good. get on.

The rear end of the contactor 12 has a convex portion 129 that is held by the second support end surface 123 and the second contact end surface 125 and extends substantially vertically upward from the substrate 10. The convex portion 129 is a point where the tip of the contactor 12 is pressed downward and the contactor 12 is rotated. In order to press the portion of the second supporter 42, the restoring force of the compressed second supporter 42 is used to contact the contactor 12. Stress is applied in such a manner that the rotation is restored to the original state, and stress is applied so as to push the fourth contact end surface 127 to the base portion 432 of the connection member 43.

The fourth contact end surface 127 is curved into a convex arc shape, and regardless of the rotation position of the contactor 12, the end surface with the same curvature can contact the base portion 432 of the connection member 43. The fourth contact end surface 127 has a curvature greater than that of the third contact end surface 126, and has a curvature smaller than the convex arc shape of the corner portion of the upper surface of the bottom portion 431 of the connection member 43 and the inner side end surface of the base portion 432. Thereby, even when the tip of the contactor 12 is pressed by the subject 51 and the contactor 12 is rotated, electrical contact with the base portion 432 of the connection member 43 can be reliably performed.

The second support end surface 123 of each contact 12 is curved in a concave arc shape with the central angle of the arc being 180 degrees or more, and can contact the lower side of the second support body 42 and the lateral sides. In this way, when the tip of the contactor 12 is pressed by the subject 51, the contactor 12 rotates around the second support 42 as an axis, and is restored by the second support 42 pressed by the second support end face 123. Force, the second supporting end surface 123 is pushed downward and rearwardly, so the third contact end surface 126 is pushed while pushing against the bottom 431 of the connecting member 43, and the fourth contact end surface 127 is pushed The inner end surface of the base portion 432 which is pushed to the connecting member 43 slides. Thereby, the electrical connection with the connection member 43 can be performed reliably and stably.

Each contactor 12 is independent of the rotation position when the tip of the contactor 12 is pressed, and can be in electrical contact with both the bottom portion 431 and the base portion 432 of each connecting member 43 at the same time. Therefore, it can be in good contact with the wiring pattern 11 of the substrate 10 Electrical contact. In addition, since both the bottom portion 431 and the base portion 432 of each connection member 43 can be contacted, even if either of them cannot be contacted for some reason, as long as the other party is in contact, electrical connection can be ensured and contact failure can be reduced.

As shown in FIG. 4, the tip portion 121 of each contact 12 protrudes from the slit 17 of the housing portion 24, and as shown in FIG. 3, the terminal 511 of the subject 51 is electrically contacted. In this embodiment, the tip portion 121 is exemplified in a case where the substrate 10 extends in a vertical direction, and is suitable for a situation in which the tip is pressed with a high load, but it is not limited to this, and it may be tilted forward. In addition, the tip of the contactor 12 is structured so that the tip 121 is pressed downward and is positioned above the first support 41 during the pressing, so that the tip can be pressed under a high load, so it is better. In a state where the tip of the contactor 12 is not pressed, it is more preferable that the tip of the contactor 12 is located on the rear side than the center of the second support 42. In addition, the case where the tip shape of the tip portion 121 is arc-shaped is exemplified, but it is not limited to this.

Either the first support 41 or the second support 42 is made of an electrically insulating material having elasticity. For example, a material made of an elastomer such as silicone rubber can be used. The first support body 41 and the second support body 42 are formed in a cylindrical shape as shown in FIG. 6. In order to support the plurality of contactors 12, they are arranged along the side-by-side direction of the plurality of contactors 12. The first support 41 is disposed below the tip 121 of the contact 12, and the second support 42 is disposed on the second support end surface 123 of the contact 12.

The first support 41 is the same size as or slightly larger than both ends of the first horizontal hole 191 of the hole portion 18 and the first recessed portion 251 provided in the partition wall 25, so it is pushed into the first horizontal hole 191 It is held by the case portion 24. Similarly, the second support body 42 has the same or slightly larger width than the two ends of the second horizontal hole 192 and the second recessed portion 252 provided in the partition wall 25. Therefore, the second support 42 is pushed into the second horizontal hole 192 by The case portion 24 is held.

As shown in FIG. 5, the first support 41 is disposed so as to be in contact with the front side inner wall surface of the hole portion 18, the first support end surface 122 of the contactor 12, and the bottom portion 431 of the connection member 43 at the same time. The end surface 122 contacts diagonally upward from the rear side of the first support 41. This allows the load to be moderately dispersed when the tip of the contactor 12 is pressed, so that it can cope with high loads.

As shown in FIG. 5, the second support body 42 is disposed so as to contact the arc-shaped surface of the second support end surface 123 of each contact 12. Since the diameter of the second support body 42 is larger than the diameter of the arc shape of the second support end surface 123, the end surface of each contact 12 is pushed to the bottom portion 431 and the base portion 432 of the connection member 43 and can be reliably contacted.

In addition, in this embodiment, a case where the first support 41 and the second support 42 support the plurality of contactors 12 in common is exemplified, but the present invention is not limited to this. For example, two first support bodies 41 and second support bodies 42 each having a short length in the long-side direction are respectively provided, and a group of the first support body 41 and the second support body 42 are arranged to support three contactors 12, Another set of the first support body 41 and the second support body 42 may be arranged so as to support the remaining three contactors 12.

Moreover, in this embodiment, each contact 12 is supported by two support bodies of the 1st support body 41 and the 2nd support body 42, and a load can be disperse | distributed compared with the state supported by 1 support body. That is, it is possible to extend the life of the support (the first support 41 and the second support 42) (reducing the rate of deterioration).

Next, an operation when a crushing load is applied to the tip portion 121 of the contactor 12 of the embodiment will be described with reference to FIG. 7. FIG. 7 is a cross-sectional view of the socket portion 20 and the substrate 10 (the frame portion 26 is omitted from the description) in which the contact subassembly 40 is housed, and the contact 12 shown in a solid line reveals that the tip is pressed by the subject 51 before it is pressed. The state of the contact subline depicted by the dotted line reveals the state where the tip is pressed by the subject 51.

As shown in FIG. 7, a connection member 43 is disposed on the wiring pattern 11 on the substrate 10, and a contact 12 is disposed on a bottom portion 431 of the connection member 43. A first supporter 41 is disposed below the tip portion 121 on the front side of the contactor 12, and the first support end surface 122 of the contactor 12 is supported upward by the first supporter 41. A second support body 42 is disposed on the second support end surface 123 on the rear end side of the contactor 12, and the second support end surface 123 is supported downward and rearward by the second support body 42.

In a state before the tip of the contactor 12 is pushed downward, the first contact end surface 124 is in contact with the upper surface of the bottom portion 431 of the connection member 43, and the second contact end surface 125 is in contact with the base portion 432 of the connection member 43.

The tip side of the arm portion 128 of the contactor 12 is supported by the first support 41, the tip portion 121 protrudes from the contactor projection opening 171 toward the opening portion 14, and is substantially perpendicular to the terminal 511 of the subject 51. The tip position of the tip portion 121 is closer to the right side of FIG. 6 than the center A of the first support 41 (that is, the second support 42 side, which is the rotation axis of the contactor 12).

From this state, if the subject 51 is pressed vertically against the substrate 10 with a predetermined indentation load, the contactor 12 rotates, and the tip 121 moves downward while drawing an arc, and moves to the left in FIG. 6. The tip of the contactor 12 wipes the terminal 511. When the contactor 12 rotates, the fourth contact end surface 127 moves upward while contacting the base portion 432 of the connection member 43, and the third contact end surface 126 moves in the left-right direction while rolling.

At this time, the first support end surface 122 of the contactor 12 presses the first support body 41. Therefore, the first support body 41 is elastically deformed while being compressed. In addition, since the convex portion 129 of the contactor 12 rotates, and the second support end surface 123 presses the second support body 42, the second support body 42 is elastically deformed while being compressed.

Then, in a state where the object 51 to be inspected is fully pressed, the first support body 41 is pushed into the first support end surface 122 of the contactor 12 to be compressed and deformed. Therefore, the tip portion 121 is restored by the restoration force of the first support body 41. The tip of is pressed upward toward the terminal of the subject 51. In addition, the second support body 42 is compressed and deformed by being pressed into the second support end surface 123 of the contactor 12, so that the restoring force of the second supporter 42 is used to restore the rotation of the contactor 12 to its original state and apply stress. Therefore, therefore, the tip of the tip portion 121 is also pressed upward toward the terminal of the subject 51.

At this time, the tip portion 121 of the contactor 12 is in an oblique posture, and the position of the tip of the tip portion 121 of the contact terminal 51 is moved to the same position as the position of the center A of the first support 41 or to the left, and is located at the first position. 1 Above the support 41. The first support 41 is located below the tip 121 of the contactor 12, so the load P acting on the tip 121 from the terminal 511 of the subject 51 is transmitted to the first support 41 through the first support end surface 122. The distributed load is transmitted to the bottom of the connection member 43 and the front-side inner wall surface of the hole portion 18. Since the third contact end surface 126 contacts the bottom portion 431 and the fourth contact end surface 127 contacts the base portion 432, the distributed load from the subject 51 is transmitted from the third contact end surface 126 to the bottom portion 431 and from the fourth contact end surface 127. To the base 432. In this way, when the subject 51 is pressed, the contacts 12 and the connection member 43 can be reliably and electrically connected in a stable manner.

Next, a conductive path of the contactor 12 and the connection member 43 according to the embodiment will be described with reference to FIG. 8. FIG. 8 is a cross-sectional view (the description of the frame portion 26 is omitted) of the socket portion 20 and the substrate 10 in a state in which the contact subassembly 40 is accommodated in a state where the subject 51 is mounted, and a diagram illustrating a conductive path.

In FIG. 8, a thick line is a part that conceptually shows a conductive path. In addition, in FIG. 8, the conductive paths R1 and R2 are the shortest paths connecting the terminal 511 of the subject 51 and the wiring pattern 11 of the substrate 10.

As shown in FIG. 8, a substantially L-shaped connection member 43 is provided, and the contactors 12 are arranged so as to contact the bottom portion 431 and the base portion 432 of the connection member 43, thereby becoming two conductive paths R1 and R2.

The conductive path R1 is a path that passes from the tip portion 121 of the contactor 12 through the third contact end surface 126, the bottom portion 431 of the connection member 43, and the wiring pattern 11. The conductive path R2 is a path that passes from the tip portion 121 of the contactor 12 through the fourth contact end surface 127, the base portion 432 of the connection member 43, and the wiring pattern 11.

The connection member 43 has not been previously provided, so there is only one conductive path. As in this embodiment, the contact 12 is provided for the wiring pattern 11 through the approximately L-shaped connection member 43. As shown in FIG. Are two conductive paths R1 and R2. As a result, the electrical connection test of the subject 51 caused by the electrical connection device 1 can have good electrical connection, and the test can be performed with high accuracy. In addition, even if one conductive path is not formed, the other conductive path can be used to ensure electrical connection. Therefore, contact failure can be reduced.

In addition, since a substantially L-shaped connecting member 43 has not been previously provided, a portion corresponding to the fourth contact end face 127 of the contactor 12 directly contacts the inner wall surface of the hole portion of the housing portion 24. Generally, the housing 24 is formed of an insulating synthetic resin. Therefore, a portion corresponding to the fourth contact end surface 127 may damage the inner wall surface of the hole portion of the housing portion 24, and the contactor 12 may be caught at this portion, which may cause The contactor 12 may be separated from the wiring pattern 11 of the substrate 10, or foreign matter generated from the housing portion 24 may cause the electrical contact between the contactor 12 and the wiring pattern 11 of the substrate 10 to deteriorate. However, according to this embodiment, the contactor 12 is provided through the substantially L-shaped connecting member 43 so that the contactor 12 does not contact the housing portion 24. Therefore, the situation of damaging the inner surface of the housing portion 24 can be avoided. It is also possible to avoid the generation of foreign objects.

(A-2) Effect of the embodiment As described above, according to this embodiment, the presence of a connection member made of a conductive material between the contactor and the wiring pattern of the substrate can reduce the damage of the wiring pattern of the substrate. And the damage to the inner surface of the casing can avoid the reduction of electrical contact caused by the influence of foreign objects.

In addition, the connection member has a substantially L-shape, and can contact the end surface of the contactor at two places, and can stably electrically connect the contactor and the wiring pattern of the substrate.

In addition, a first support body that is disposed below the tip of the contactor and supported above the connection member is provided with a rotation axis that becomes the contactor and pushes the end face of the contactor to the first of the connection member at two places. 2 The two support bodies of the support body can strongly support the contactor, so the crushing load of the body to be inspected can be set to a high load. In addition, by providing two support bodies and a connection member, the load acting on the contact tip can be dispersed, and the deterioration of each support body in a high-temperature environment or a low-temperature environment can be reduced. As a result, the life of the support can be extended.

(B) Other Embodiments Although various modified embodiments have been described in the above embodiments, the present invention is also applicable to the following embodiments.

(B-1) FIG. 9 is a cross-sectional view showing the structure of the electrical connection device 1A according to the first modified embodiment.

In FIG. 9, the electrical connection device 1A of the first modified embodiment has a width of the base portion 432A of the connection member 43A larger than the width of the base portion 432 of the connection member 43 of the first embodiment. In this way, by increasing the width of the base portion 432A, the heat release performance is further improved, and the temperature rise of the contactor 12A when the current is applied can be suppressed, so that a larger current can flow. That is, the test object 51 can be tested with a large current. The width of the base portion 432A of the connection member 43A can be determined according to the specifications of the electrical connection device 1A. However, the width of the base portion 432A is extended in the long side direction of the rear end side of the contactor 12A disposed on the connection member 43A. Since heat can be efficiently radiated, more accurate tests can be performed.

(B-2) FIG. 10 is a cross-sectional view showing the structure of the electrical connection device 1B according to the second modified embodiment.

In FIG. 10, the electrical connection device 1B according to the second modified embodiment is different from the first modified embodiment in that it does not include the first support 41. The shape of the contact 12B, the shape of the hole 18B, the holding structure of the second support 42 and the shape of the connection member 43B are also different.

The electrical connection device 1B according to the second modified embodiment includes a substrate 10 and a socket portion 20B provided on the substrate 10. The socket portion 20B includes a frame portion 26, a contact sub-assembly 40B, and a case portion 24B housing the contact sub-assembly 40B. Since the substrate 10 and the frame portion 26 are almost the same as those of the first embodiment, description thereof is omitted.

The case portion 24B is a member that accommodates the contact sub-assembly 40B and is combined with the substrate 10 to hold the contact sub-assembly 40B and is formed as an electrically insulating member. The case portion 24B is provided on the substrate 10, and a frame portion 26 is provided on the upper surface of the case portion 24B. The outer shape of the case portion 24B in a plan view is a substantially rectangular shape having the same shape as the outer shape of the frame portion 26 in plan view, and the outer shape of the case portion 24B and the frame portion 26 overlap each other in plan view.

The housing portion 24B is provided with a hole portion 18B for receiving the contact sub-assembly 40B at a position corresponding to the terminal 511 of the subject 51 to be accommodated in the opening portion 14 of the frame portion 26. The hole portion 18B is provided in parallel with each of the four sides of the opening portion 14.

Each hole portion 18B has a plurality of slits 17B for accommodating the plurality of contactors 12B on the front end side, and a rear end side of the plurality of contactors 12B accommodated in each of the slots 17B, and elastically supports the rear end side of the contactor 12B. The rear end accommodating portion 16 is a recessed portion of the support 42B. The width of the slit 17B is set to be slightly wider than the thickness of the contactor 12 so that the front end side of the contactor can rotate freely. The slit 17B is opened above and below the case portion 24B, and the rear end receiving portion 16 is opened below the case portion 24B. Then, the lower side of the plurality of slits 17B communicates with the lower side of the front side of the rear end housing portion 16.

The plurality of slits 17B constituting the hole portion 18B are vertically oriented to the sides of the opening portion 14 and are arranged in parallel at a certain interval in parallel. The adjacent slits 17B are partitioned by the partition wall 25B.

The slits 17B located on the upper surface of the housing portion 24B are opened on the upper side, the inside faces the opening portion 14 of the frame portion 26, and the outside is blocked by the lower surface of the frame portion 26. The upper opening portion facing the slit 17B of the opening portion 14 is a portion where the tip of the contactor 12B projects up and down toward the opening portion 14 and is also referred to as a contactor protruding opening 171B. The tips of the plurality of contactors 12B protruding from the contactor protrusion opening 171B can respectively contact the plurality of terminals 511 of the subject 51 mounted on the opening 14.

The rear end accommodating portion 16 constituting the hole portion 18B is attached to the upper corner of the inner wall of the front side, and has a support receiving surface 161 curved in a concave shape so as to be in contact with the cylindrical surface of the cylindrical support 42B. The support body receiving surface 161 supports the support body 42B obliquely from the front side. In addition, grooves (not shown) are provided on both sides of the rear end housing portion 16 to support both ends of the support 42B. This groove portion is a groove which is recessed vertically upward from the lower surface of the housing portion 24B with the same width or slightly smaller than the width of the support body 42B, and the deep end is bent into a concave arc. The supporting body 42B is pressed into the groove portion at both ends in such a manner that the side contacts the supporting body receiving surface 161, and is mounted on the rear-end receiving portion 16.

The opening of the hole portion 18B located at the lower surface of the housing portion 24B is an opening where the lower opening of the slit 17B and the opening of the rear-end accommodating portion 16 coincide with each other, and is blocked by the substrate 10.

Next, a structure of the contactor assembly 40B including the plurality of contactors 12B housed in the case portion 24B will be described.

A contact sub-assembly 40B is assembled in each hole portion 18B of the case portion 24B. The contact assembly 40B includes a plurality of contacts 12B, a plurality of connection members 43B, and a support 42B.

Each of the connection members 43B is formed of a conductive metal member, and is located between the contactor 12B and the wiring pattern 11 on the substrate 10 to electrically connect the contactor 12B and the wiring pattern 11. The connecting member 43B is a substantially L-shaped plate-shaped member, and has a base portion 432B standing upright to the substrate 10 and a bottom portion 431B extending parallel to the substrate 10. The thickness of the connection member 43B is formed to be the same as the thickness of the contact 12B.

The connecting member 43B is housed in each slit 17B with the front end side of the bottom portion 431B paired with the contact 12B. The lower end surface of the bottom portion 431B contacts the wiring pattern 11 on the substrate 10, and the outer side end of the base portion 432B abuts against the rear end and is accommodated. The deep inner wall of the portion 16 is arranged in the rear end housing portion 16. The upper end surface of the bottom portion 431B of the connection member 43B and the inner side end surface of the base portion 432B are surfaces that come into contact with the end surface of the contactor 12B. Thereby, the connecting member 43B exerts the sliding and pressing of the end face of the contactor 12B when the contactor 12B is pressed downward from the tip of the contactor 12B by the terminal 511 of the subject 51 to prevent the substrate 10, the wiring pattern 11, and the rear-end receiving portion 16 The role of damage to the deep inner wall.

The upper end surface of the base portion 432B of the connection member 43B is set so as to be the same as or lower than the top plate surface 162 of the rear end housing portion 16. The bottom portion 431B of the connection member 43B is provided in such a manner that the lower surface thereof is electrically connected to the strip-shaped wiring pattern 11 of the substrate 10.

Each contact 12B is formed of a conductive metal member, and is a plate-shaped member formed in a substantially C-shape. The contact 12B has a tip electrically connected to the terminal 511 of the subject 51 on the front end side (the tip side), and The rear end side has a rear end electrically connected to the base portion 432B of the connection member 43B.

The tip side portion of the contactor 12B has an arm portion 128B extending obliquely upward from the rear end portion of the contactor 12B and a tip portion 121B extending substantially vertically upward from the end portion of the arm portion 128B.

The arm portion 128B extends with the same width. The upper end of the arm portion 128 is bent into a concave arc shape, and the lower end is bent into a convex arc shape. The tip portion 121B has a convex arc shape.

The rear end portion of the contactor 12B is tied to the upper end thereof, and has a concave arc-shaped support end surface 123B that is bent and brought into contact with the arc portion obliquely below the rear side of the support body 42B. In a state where the tip of the contactor 12B is not pressed, the first contact end face 124B is in contact with the upper surface of the bottom portion 431B of the connection member 43B, and the rear end is in contact with the inner end surface of the base portion 432B of the connection member 43B The second contact end face 125B.

The third contact end surface 126B which is curved to protrude further forward than the first contact end surface 124B at the lower end of the arm portion 128B is a convex side. In addition, the first contact end face 124B and the second contact end face 125B are at a substantially right angle, and the corner portion thereof is a fourth contact end face 127B which is curved in a convex arc shape. Furthermore, in this embodiment, the fourth contact end surface 127B increases the curvature to be larger than the fourth contact end surface 127 of the first embodiment, and increases the contact pressure against the base portion 432B of the connection member 43B.

In a state where the tip of the contactor 12B is pressed downward and the contactor 12B rotates, the third contact end face 126B is in contact and electrically connected to the bottom portion 431B of the connection member 43B, and the fourth contact end face 127B is in contact and electrically connected. On the base portion 432B of the connecting member 43B. The end surface from the third contact end surface 126B through the first contact end surface 124B and the second contact end surface 127B to the second contact end surface 125B is smoothly connected. When the contact 12B is rotated, it is well connected to the connection member 43B. get on.

At the rear end of the contactor 12B, there is a convex portion 129B that is held by the support end surface 123B and the second contact end surface 125B and extends substantially vertically upward from the substrate 10. The convex portion 129B is the tip of the contactor 12B being pressed downward and the contactor 12B is rotated. In order to press the part of the support 42B, the restoring force of the compressed supporter 42B is used to restore the rotation of the contactor 12B. The stress is applied in the original state, and the stress is applied so as to push the fourth contact end surface 127B to the base portion 432B of the connection member 43B.

The support end surface 123B of each contact 12B is curved into a concave arc shape having a central angle of an arc of 90 degrees or more, and can contact obliquely downward from the rear side of the support 42B. In this way, by combining with the support receiving surface 161 diagonally above the front side of the contact support 42B, when the contact 12B is pressed by the subject 51, the contact 12B rotates around the support 42B. And by the restoring force of the support body 42B pressed by the support end surface 123B, the support end surface 123B is pushed downward and laterally, so the third contact end surface 126B is pushed up to the bottom of the connecting member 43B above the 432B side. Sliding, and the fourth contact end surface 127B slides while being pushed up to the inner side end surface of the base portion 432B of the connecting member 43B. Thereby, the electrical connection with the connection member 43B can be performed reliably and stably.

Even in this modified embodiment, it is the same as the above-mentioned embodiment. Each contact 12B is independent of the rotation position when the tip of the contact 12B is pressed, and can be simultaneously with both the bottom 431B and the base 432B of each connection member 43B. Since electrical contact is made, it is possible to have good electrical contact with the wiring pattern 11 of the substrate 10. In addition, even in a situation where either party cannot be contacted for some reason, as long as the other party contacts, electrical connection can be ensured, and contact failure can be reduced.

Since the support 42B is the same as the second support 42 of the embodiment, detailed description is omitted. Furthermore, in this embodiment, since there is only one support, it is suitable for a situation where the contact load is relatively small.

(B-3) In the embodiment described above, the state of the cylindrical member, that is, the member having the same diameter as the first support and the second support has been exemplified. However, the diameter of the first support may be different from the diameter of the second support. By adjusting the diameter of the first support, the stroke of the contact tip and the contact load can be easily adjusted. The elasticity of the first support may be different from that of the second support. The contact load can be easily adjusted by adjusting the elastic modulus of the first support.

1‧‧‧ Electrical connection device

1A‧‧‧electrical connection device

1B‧‧‧electrical connection device

10‧‧‧ substrate

11‧‧‧wiring pattern

12‧‧‧ Contact

12A‧‧‧Contact

12B‧‧‧Contact

14‧‧‧ opening

14a‧‧‧inclined surface

14b‧‧‧ Containment wall

15‧‧‧Fixed components

16‧‧‧ rear-end containment unit

17‧‧‧ gap

17B‧‧‧Gap

18‧‧‧ Hole

18B‧‧‧Hole

20‧‧‧Socket Department

20A‧‧‧Socket Department

20B‧‧‧Socket Department

24‧‧‧Shell

24B‧‧‧Shell

25‧‧‧ partition

25B‧‧‧ partition wall

26‧‧‧Frame Department

40‧‧‧ contact subassembly

40B‧‧‧Contact subassembly

41‧‧‧ the first support

42‧‧‧ 2nd support

42B‧‧‧ support

43‧‧‧ connecting member

43A‧‧‧Connecting member

43B‧‧‧Connecting member

51‧‧‧ Subject

121‧‧‧ Tip

121B‧‧‧ Tip

122‧‧‧The first support end face

123‧‧‧ 2nd support face

123B‧‧‧Support end face

124‧‧‧The first contact end face

124B‧‧‧The first contact end face

125‧‧‧ 2nd contact end face

125B‧‧‧ 2nd contact end face

126‧‧‧3rd contact end face

126B‧‧‧3rd contact end face

127‧‧‧The fourth contact end face

128‧‧‧ arm

128B‧‧‧ Arm

129‧‧‧ convex

129B‧‧‧ convex

161‧‧‧ support body bearing surface

171‧‧‧ opening for contactor protrusion

171B‧‧‧Opening for contactor protrusion

172‧‧‧Extended trench

173‧‧‧section

191‧‧‧The first horizontal hole

192‧‧‧ 2nd horizontal hole

251‧‧‧concave

252‧‧‧ Recess

431‧‧‧ bottom

431A‧‧‧ bottom

431B‧‧‧ bottom

432‧‧‧base

432A‧‧‧Base

432B‧‧‧Base

433‧‧‧concave

434‧‧‧upper

434A‧‧‧upper

511‧‧‧terminal

R1‧‧‧ conductive path

R2‧‧‧ conductive path

[Fig. 1] A plan view showing a structure of an electrical connection device according to an embodiment. [Fig. 2] A bottom view showing the structure of the socket portion of the electrical connection device according to the embodiment. [Fig. 3] A sectional view showing the structure of the electrical connection device of the embodiment. [Fig. 4] A cross-sectional perspective view showing a state where the contact sub-assembly is housed in a housing portion of the electrical connection device of the embodiment. [FIG. 5] A cross-sectional view showing the structure of a contact subassembly housed in the electrical connection device of the embodiment. [Fig. 6] A structural diagram showing the structure of a contactor assembly according to an embodiment. [Fig. 7] An explanatory diagram for explaining an operation when an indentation load is applied to the tip of the contactor of the embodiment. [Fig. 8] An explanatory diagram for explaining the conductive paths of the contactor and the connecting member according to the embodiment. [FIG. 9] A cross-sectional view showing the structure of an electrical connection device according to a modified embodiment. [Fig. 10] A cross-sectional view showing the structure of an electrical connection device according to a modified embodiment.

Claims (6)

An electrical connection device includes a substrate on which wiring is formed, and a socket portion provided on the substrate, and an electrode portion of an object to be mounted on the socket portion is electrically connected to a wiring formed on the wiring on the substrate. The connection device is characterized in that: The socket part is provided with a plurality of contact members having a tip in contact with the electrode part of the object to be inspected, and a plurality of connection members in which the contact members are in contact with wiring on the substrate, and elastically supports The rotating support of each of the contacts, and accommodates these in the hole portion; Each of the connection members has a base portion in contact with the inner wall surface of the hole portion, and a bottom portion which is electrically connected to the wiring of the substrate; The contactor It is electrically connected to the base and bottom of the connection member. The electrical connection device according to item 1 of the scope of patent application, wherein: the bottom portion of each connection member extends along the wiring of the substrate; the base portion of each connection member is connected to the bottom portion along the hole portion The inner surface of the housing portion extends perpendicular to the substrate. The electrical connection device according to item 1 of the scope of patent application, wherein: the width of the base portion of the connection member is greater than the width of the bottom portion. According to the electrical connection device described in item 1 of the scope of the patent application, the upper end portion of the base portion of each of the connection members extends rearward and engages with a groove portion provided in a hole portion of the socket portion. According to the electrical connection device described in item 1 of the scope of patent application, the socket part further includes a support body that supports the tip side of each of the contacts from below. The electrical connection device according to item 5 of the scope of patent application, wherein: (i) the position of the tip of each contactor of the test object is located above a support supporting the tip side of the contactor;