JP5435827B2 - connector - Google Patents

Description

  The present invention relates to a connector, and relates to a connector that is disposed between two connection objects and electrically connects the connection objects.

  Conventionally, a connector including a contact member and an insulator is known (see Patent Document 1 below).

  The contact member has an elastic body, a film, and a conductor portion.

  The elastic body is substantially plate-shaped, and is sandwiched between two connection objects in the width direction (direction orthogonal to the longitudinal direction and the thickness direction of the elastic body). The elastic body has a holding surface and a base surface. The holding surface is a surface on one end side in the thickness direction of the elastic body and is substantially curved. The base surface is a surface on the other end side in the thickness direction of the elastic body and is substantially flat.

  The film is attached to the holding surface of the elastic body.

  A plurality of belt-like conductor portions are formed on the film. The conductor portions extend in the width direction of the elastic body and are arranged at equal intervals along the longitudinal direction of the elastic body.

  The insulator has a plurality of holding holes. A contact member is inserted and held in the holding hole.

  In order to use this connector, first, the connector is disposed between two connection objects.

  Next, the connection objects are brought close to each other until the contact members of the connector are slightly crushed.

  Finally, in order to maintain the contact member in a slightly crushed state, the objects to be connected are coupled by appropriate coupling means such as bolts and nuts.

  As a result, the conductor part of the contact member is pressed against the pad of the connection object, and the connection objects are electrically connected to each other through the conductive part.

JP 2006-310140 A (see paragraphs 0022 to 0026, FIGS. 1 and 2)

  In the above-described connector, the conductor portions formed on the surface of the film extend in the width direction of the elastic body and are arranged at equal intervals along the longitudinal direction of the elastic body. When the interval is narrowed, adjacent conductor portions may be short-circuited when the connector is sandwiched between two connection objects. For this reason, it has been difficult for the above-mentioned connector to meet the recent demand for narrow pitch.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a connector capable of achieving a narrow pitch.

  In order to solve the above-mentioned problem, the contact member of the invention of claim 1 is a plurality of belt-like elastic bodies, a film affixed to the elastic bodies, and a plurality of contacts formed along the longitudinal direction of the elastic bodies. Two connection objects that are arranged so as to sandwich the elastic body in the width direction of the elastic body orthogonal to the thickness direction of the elastic body and the longitudinal direction of the elastic body. In the contact member for connection, the plurality of conductive paths are constituted by a first conductive path and a second conductive path, and the first conductive path and the second conductive path are the elastic body. The first conductive path is provided between the elastic body and the film, and extends from one end to the other end in the width direction of the elastic body; and One of the two connection objects provided on the film A first conductor contact portion that can contact an object; a second conductor contact portion that is provided on the film and that can contact the other connection object of the two connection objects; and penetrates the film; A first conductor coupling portion that couples the first conductor contact portion and one end portion of the first conductor film; and the second conductor contact portion and the first conductor film; A second conductor coupling portion that couples the other end portion, and the second conductive path is provided on the surface of the film, and extends from one end to the other end in the width direction of the elastic body. A conductor film, a third conductor contact portion provided at one end of the second conductor film and capable of contacting one of the two connection objects; and the other end of the second conductor film And a fourth conductor contact portion that can contact the other connection object of the two connection objects. The first conductor contact portion, the third conductor contact portion, the second conductor contact portion, and the fourth conductor contact portion are shifted in the thickness direction of the elastic body, respectively. And

  A connector according to a second aspect of the invention includes the contact member according to the first aspect and a frame that holds the contact member so that both end portions in the width direction of the elastic body are exposed.

  According to the present invention, a narrow pitch can be achieved.

FIG. 1 is a perspective view of a reference connector for facilitating understanding of an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a portion A in FIG. 3 shows a contact member of the connector shown in FIG. 1. FIG. 3A is a front view, FIG. 3B is a plan view, and FIG. 3C is taken along the line IIIC-IIIC in FIG. It is sectional drawing. 4 is a perspective view showing a state before the electronic component and the heat sink are attached to the connector shown in FIG. FIG. 5 is a cross-sectional view showing a usage state of the connector shown in FIG. 6A and 6B show a contact member of a connector according to an embodiment of the present invention. FIG. 6A is a front view, FIG. 6B is a plan view, and FIG. 6C is a VIC- in FIG. It is sectional drawing which follows a VIC line.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In order to facilitate understanding of the embodiment of the present invention, first, a reference example will be described based on FIGS.

  As shown in FIGS. 1 and 2, the connector 1 of this reference example includes a frame 3 and a plurality of contact members 5. The connector 1 electrically connects an electronic component (connection object) 21 such as a planar mounting type LSI and a printed circuit board (connection object) 22 (see FIGS. 4 and 5).

  The frame 3 has an accommodation recess 3a. A plurality of holding holes 3b are formed at the bottom of the housing recess 3a. The plurality of holding holes 3b are two-dimensionally arranged. The holding hole 3b penetrates the bottom of the housing recess 3a. A contact member 5 is inserted into the holding hole 3b. The upper end portion and the lower end portion of the contact member 5 held in the holding hole 3b respectively protrude from the upper surface and the lower surface of the bottom portion of the housing recess 3a.

  A positioning boss 3c is formed on the lower surface of the frame 3 (see FIG. 5). The positioning boss 3 c is inserted into a positioning hole 22 b formed in the printed board 22, and the connector 1 is positioned with respect to the printed board 22.

  As shown in FIGS. 3A to 3C, the contact member 5 has an elastic body 6, a film 7, and a plurality of conductive paths 8.

  The elastic body 6 is made of an insulating material and has a substantially belt-like shape. It is sandwiched between. A curved surface 6 a is formed on the front surface of the elastic body 6, and a flat surface 6 b is formed on the back surface of the elastic body 6. The cross-sectional shape of the elastic body 6 is substantially D-shaped. Cutouts 6c are formed at equal intervals in the upper and lower portions of the elastic body 6, respectively. The notch 6c is located between the conductive paths 8 adjacent to each other. Independent displacement portions 6d are formed at the upper and lower portions of the elastic body 6 by the notches 6c. The independent displacement portion 6d is a portion that can be displaced independently. Examples of the material (insulating material) of the elastic body 6 include elastomers such as silicon rubber and silicon gel. A reinforcing plate 10 is embedded in the flat surface 6 b of the elastic body 6.

  The film 7 has insulating properties and is attached to the curved surface 6 a of the elastic body 6.

  The plurality of conductive paths 8 include a conductor film 80, a first conductor contact portion 81, a second conductor contact portion 82, a first via (first conductor coupling portion) 83, and a second via (second conductor), respectively. Coupling portion) 84.

  The conductor film 80 has a substantially belt shape. The conductor film 80 is formed on the back surface of the film 7 (the surface of the film 7 on the elastic body 6 side) and extends from one end of the elastic body 6 in the width direction w to the other end. The conductive paths 8 are arranged at equal intervals along the longitudinal direction L of the elastic body 6.

  The first conductor contact portion 81 is rectangular and is formed at one end of the elastic body 6 in the width direction w. The width of the first conductor contact portion 81 is narrower than the width of the conductor film 80.

  The second conductor contact portion 82 is rectangular and is formed at the other end of the elastic body 6 in the width direction w. The width of the second conductor contact portion 82 is narrower than the width of the conductor film 80 and is the same as the width of the first conductor contact portion 81.

  The first via 83 penetrates through the film 7 and electrically connects one end portion of the conductor film 80 and the first conductor contact portion 81.

  The second via 84 penetrates the film 7 and makes the other end portion of the conductor film 80 and the second conductor contact portion 82 conductive.

  In a state where the film 7 is attached to the elastic body 6, the first and second conductor contact portions 81 and 82 are positioned on the independent displacement portions 6d at the upper end portion and the lower end portion of the elastic member 6, respectively. The first conductor contact portion 81 contacts a pad (not shown) of the electronic component 21, and the second conductor contact portion 82 contacts a pad (not shown) of the printed circuit board 22.

  Examples of the material of the conductive path 8 include copper plated with gold and nickel plated with gold.

  Examples of the material of the film 7 include polyimide resin and aramid resin. Examples of the method for attaching the film 7 to the elastic body 6 include adhesion, adhesion, ultrasonic welding, laser welding, and the like. It does not matter whether the location is a part or the whole.

  The conductive path 8 is formed in the film 7 by patterning a metal thin film, for example. For example, fine processing techniques such as plating, sputtering, and etching are used.

  Next, a procedure for connecting the electronic component 21 and the printed board 22 using the connector 1 will be described with reference to FIGS.

  First, the connector 1 is disposed on the printed circuit board 22. At this time, the positioning boss 3c of the frame 3 is inserted into the positioning hole 22b of the printed board 22, and the connector 1 is positioned with respect to the printed board 22 (see FIG. 5).

  Next, the electronic component 21 is housed in the housing recess 3 a of the frame 3.

  Thereafter, the heat sink 23 is disposed on the electronic component 21.

  Next, bolts (not shown) are inserted into the bolt insertion holes 23a of the heat sink 23, the bolt insertion holes 3d of the frame 3, and the bolt insertion holes (not shown) of the printed circuit board 22, and nuts (not shown) are inserted into the bolts. ).

  Finally, the nut is tightened, and the printed circuit board 22, the connector 1, and the heat sink 23 are joined.

  At this time, the upper and lower ends of the contact member 5 are sandwiched between the electronic component 21 and the printed circuit board 22 and are crushed. It is pressed against the pad of the electronic component 21 and the pad of the printed board 22.

  Therefore, the electronic component 21 and the printed board 22 are electrically connected via the connector 1.

  According to this reference example, since only the first and second contact portions 81 and 82 of the conductive path 8 are formed on the surface of the film 7, even when the contact member 5 is crushed more than necessary when the connector 1 is used. The contact areas of the first and second conductor contact portions 81 and 82 with respect to the electronic component 21 and the printed board 22 do not increase. As a result, the pitch of the pads of the electronic component 21 and the printed circuit board 22 can be reduced, and the pitch of the contact member 5 can be reduced.

  Moreover, since the notch 6c is formed in the elastic body 6, the independent displacement portion 6d can be independently displaced. As a result, the contact stability of the conductive path 8 can be enhanced.

  Next, a connector according to an embodiment of the present invention will be described with reference to FIGS. 6 (a) to 6 (c).

  Portions common to the above-described reference example are denoted by the same reference numerals and description thereof is omitted. Only the main differences from the above-described reference example will be described below.

  The contact member 205 includes an elastic body 206, a film 7, a first conductive path 208, a second conductive path 209, and the reinforcing plate 10.

  The substantially band-shaped elastic body 206 does not have a portion corresponding to the notch 6c.

  The first conductive path 208 has the same configuration as the conductive path 8 of the contact member 5 of the reference example, and the first conductive film 280, the first conductor contact portion 281, the second conductor contact portion 282, A via (first conductor coupling portion) 283 and a second via (second conductor coupling portion) 284 are configured. The first conductor film 280, the first conductor contact portion 281, the second conductor contact portion 282, the first via 283, and the second via 284 are the conductor film 80 of the reference example, the first conductor contact portion 81, This corresponds to the second conductor contact portion 82, the first via 83, and the second via 84, respectively.

  However, the widths of the first and second conductor contact portions 281 and 282 are the same as the width of the first conductor film 280.

  The second conductive path 209 is provided on the surface of the film 7. The second conductive path 209 has a substantially belt shape and extends in the width direction W of the elastic body 206. The second conductive path 209 includes a second conductor film 290, a third conductor contact portion 291, and a fourth conductor contact portion 292. A third conductor contact portion 291 is provided at one end of the second conductor film 290, and a fourth conductor contact portion 292 is provided at the other end.

  The first conductor contact portion 281 and the third conductor contact portion 291 are displaced in the thickness direction T of the elastic body 206, and the third conductor contact portion 291 is more forward than the first conductor contact portion 281. (Refer to FIG. 6B).

  The second conductor contact portion 282 and the fourth conductor contact portion 292 are shifted in the thickness direction T of the elastic body 206, and the fourth conductor contact portion 292 is more forward than the second conductor contact portion 282. (Refer to FIG. 6C).

  The first conductive path 208 and the second conductive path 209 are alternately arranged along the longitudinal direction L of the elastic body 206, and the first conductive film 280 of the first conductive path 208 is on the back surface of the film 7. The second conductive film 290 of the second conductive path 209 is on the surface of the film 7.

  According to this embodiment, the first conductor contact portion 281 and the third conductor contact portion 291 are displaced in the thickness direction T of the elastic body 206, and similarly, the second conductor contact portion 282 and the fourth conductor contact portion 282 are shifted from each other. The conductor contact portion 292 is deviated in the thickness direction T of the elastic body 206, and the first conductor film 280 of the first conductive path 208 is on the back surface of the film 7, and the second conductor path 209 is second. Since the conductive film 290 of the first conductive path 208 and the second conductive path 209 is on the surface of the film 7, the first conductive path 208 and the second conductive path 209 are less likely to be short-circuited. The interval can be narrowed (narrow pitch).

  In the above-described reference examples and embodiments, the conductor films 80 and 280 are formed on the back surface of the film 7, but the conductor films 80 and 280 may be formed on the elastic bodies 6 and 206, or the film 7 and the conductive path. You may arrange | position between 8 and the elastic bodies 6,206.

  In the above-described reference examples and embodiments, vias are used as the first and second conductor coupling portions 83, 283, 84, and 284. However, the conductor coupling portions are not limited to vias, and may be through holes, for example.

DESCRIPTION OF SYMBOLS 1 Connector 3 Frame 3a Housing recessed part 3b Holding hole 3c Positioning boss 3d Bolt insertion hole 5,205 Contact member 6,206 Elastic body 6a Curved surface 6b Flat surface 6c Notch 6d Independent displacement part 7 Film 8 Conductive path 208 1st conductive Path 80 Conductor film 280 First conductor film 81,281 First conductor contact portion 82,282 Second conductor contact portion 83,283 First via (first conductor coupling portion)
84,284 Second via (second conductor coupling portion)
209 Second conductive path 290 Second conductor film 291 Third conductor contact portion 292 Fourth conductor contact portion 10 Reinforcing plate 21 Electronic component (object to be connected)
22 Printed circuit board (object to be connected)
22b Positioning hole 23 Heat sink 23a Bolt insertion hole

Claims (2)

An almost band-shaped elastic body,
A film affixed to the elastic body;
A plurality of conductive paths formed at predetermined intervals along the longitudinal direction of the elastic body,
A contact for electrically connecting two connection objects arranged so as to sandwich the elastic body in the width direction of the elastic body perpendicular to the thickness direction of the elastic body and the longitudinal direction of the elastic body In the member,
The plurality of conductive paths are constituted by first conductive paths and second conductive paths, and the first conductive paths and the second conductive paths are alternately arranged in the longitudinal direction of the elastic body,
The first conductive path is:
A first conductor film provided between the elastic body and the film and extending from one end to the other end in the width direction of the elastic body;
A first conductor contact portion provided on the film and capable of contacting one connection object of the two connection objects;
A second conductor contact portion provided on the film and capable of contacting the other connection object of the two connection objects;
A first conductor coupling portion that penetrates the film and couples the first conductor contact portion and one end of the first conductor film;
A second conductor coupling portion that penetrates the film and couples the second conductor contact portion and the other end of the first conductor film;
The second conductive path is
A second conductor film provided on the surface of the film and extending from one end to the other end in the width direction of the elastic body;
A third conductor contact portion provided at one end of the second conductor film and capable of contacting one connection object of the two connection objects;
A fourth conductor contact portion provided at the other end of the second conductor film and capable of contacting the other connection object of the two connection objects;
The first conductor contact portion, the third conductor contact portion, the second conductor contact portion, and the fourth conductor contact portion are each shifted in the thickness direction of the elastic body. Contact member. A contact member according to claim 1;
And a frame for holding the contact member such that both end portions in the width direction of the elastic body are exposed.

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