JP2005216608A - Contact and connector equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact simply attachable to an insulator; and to provide a connector equipped with the contact. <P>SOLUTION: This contact 5 is formed by stamping a metal plate 4 and by being bent, and used by being attached to an insulation film 3. Spring parts 52, 52 are respectively continued to both ends of its intermediate part; contact parts 54, 54 are continued to tip sides of the spring parts 52, 52; and a fixed part 57 for catching a part of the insulation film 3 is connected to the intermediate part 51 through a connection part 56 in the flat surface direction of the metal plate 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a contact and a connector including the contact.

  Conventionally, as a connector for connecting an integrated circuit and a printed circuit board, one having two sheets and a plurality of cantilevers (contacts) assembled to the sheet is known (see Patent Document 1 below). .

  The two sheets have the same shape, have a large number of through holes, and are bonded together.

  Two or more cantilever beams are used for one through hole. The cantilever is fixed to the sheet by sandwiching the lower substrate portion of the cantilever between the peripheries of the two sheets.

  Conventionally, as a connector for connecting two printed boards facing each other, a connector including a housing (insulator) and an elastic contact assembled to the housing is known (see Patent Document 2 below).

  The housing is formed of insulating resin in a rectangular parallelepiped shape and has two openings.

The elastic contact is formed by forming a copper alloy into a long plate shape. Each elastic contact has a fixed piece and one divided piece and the other divided piece that are formed at one end of the fixed piece and are bent in an approximately S-shape in opposite directions. The fixing piece is fixed to the portion adjacent to the opening of the housing by mold-in molding. On the other hand, the divided piece projects from the opening to the upper surface side of the housing, and the other divided piece projects from the opening to the lower surface side of the housing. On the other hand, the tip of the divided piece contacts the first conductor pattern of the first printed circuit board, and the tip of the other divided piece contacts the second conductor pattern of the second printed circuit board.
JP 2001-167857 A (see paragraphs 0019 and 0020, FIG. 1) Japanese Patent Laid-Open No. 11-339907 (paragraphs 0011 to 0013, see FIG. 1)

  As described above, in the former connector, it is necessary to accurately place the cantilever on one sheet and then paste the other sheet on the other sheet, which makes it difficult to manufacture the connector. there were.

  In the latter connector, the fixed piece of the elastic contact is fixed to the housing by mold-in molding, and the one divided piece and the other divided piece are accommodated in the opening of the housing. Therefore, when performing the mold-in molding, it is necessary to accurately arrange the contacts in the mold, which is very troublesome and has become an obstacle in manufacturing the connector.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a contact that can be easily assembled to an insulator and a connector including the contact.

  In order to solve the above-mentioned problem, the contact of the invention of claim 1 is a contact formed by punching and bending a metal plate, and is used by being assembled to an insulator. Two contact portions that are continuous to the tip side of the spring portion, and a fixing portion that is connected to the intermediate portion via a connecting portion in a planar direction of the metal plate and sandwiches a part of the insulator. Features.

  As described above, since the contact includes the fixing portion that sandwiches a part of the insulator, the contact can be easily assembled to the insulator.

  According to a second aspect of the present invention, in the contact according to the first aspect, the contact has a symmetrical shape with respect to a reference line passing through the center of the intermediate portion and extending in the thickness direction of the metal plate.

  Since the contact is symmetrical with respect to the reference line extending in the thickness direction of the metal plate as described above, the contact is added to the two contact portions when the contact is sandwiched between the parallel connection objects. The power is offset.

  The connector of the invention of claim 3 includes a plurality of contacts and an insulator to which the plurality of contacts are assembled, and is disposed between a pair of connection objects to electrically connect both connection objects. The contact is connected in the contact arrangement direction to the intermediate part via two connecting parts, two spring parts connected to both ends of the intermediate part, a contact part connected to the tip side of these spring parts, and a part of the insulator The insulator includes a first hole through which the contact passes, and a guide that guides the intermediate portion, the connecting portion, and the fixing portion in a predetermined direction through the first hole. And a groove.

  As described above, the contact is connected to the intermediate portion in the contact arrangement direction via the connecting portion, and has a fixing portion that sandwiches a part of the insulator. The insulator includes the first hole through which the contact passes and the first hole. And a guide groove for guiding the intermediate portion, the connecting portion, and the fixing portion in a predetermined direction. Therefore, by passing the contact through the first hole, and then sliding the contact intermediate part, connecting part and fixing part along the guide groove, the fixing part sandwiches a part of the insulator, and the contact can be easily attached to the insulator. Assembled.

  According to a fourth aspect of the present invention, in the connector according to the third aspect, the spring portion has two curved portions that are curved so as to approach each other, and the insulator is located in the vicinity of the first hole, The intermediate portion, the connecting portion, and the fixing portion have a second hole into which a part of the two curved portions facing each other enters when the intermediate portion, the connecting portion, and the fixing portion are slid along the guide groove.

  As described above, the spring portion has two curved portions that are curved so as to approach each other, and the insulator is positioned in the vicinity of the first hole, and the intermediate portion, the coupling portion, and the fixing portion are arranged along the guide groove. It has a 2nd hole into which a part of two curved part which mutually opposes when sliding is entered. Therefore, when the intermediate part, the connecting part, and the fixing part of the contact are slid along the guide groove, a part of the two curved parts facing the contact enters the second hole, and the two curved parts are related to the insulator. Stopped.

  As described above, according to the contact of the first aspect of the present invention, the contact can be easily assembled to the insulator, and the manufacture of the connector is facilitated.

  According to the contact of the second aspect of the present invention, when the contact is sandwiched between the pair of connection objects, the force applied to the contact is offset, and deformation of the insulator sandwiched between the fixed portions can be prevented.

  According to the connector of the invention of claim 3, the contact can be easily assembled to the insulator, and the manufacture of the connector becomes easy.

  According to the connector of the invention of claim 4, the contact is positioned on the insulator, and the posture is also stabilized.

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

  FIG. 1 is a perspective view showing a part of a connector using contacts according to the first embodiment of the present invention, and FIG. 2 is a perspective view showing a state before the contacts are assembled to the insulating film shown in FIG.

  As shown in FIG. 1, the connector 1 includes an insulating film (insulator) 3 and contacts 5.

  As shown in FIG. 2, the insulating film 3 has a plurality of first holes 31, guide grooves 32, and second holes 33. The first hole 31, the guide groove 32, and the second hole 33 are formed by punching.

  The first holes 31 are substantially rectangular and are arranged at equal intervals along the front-rear direction D1 and the left-right direction D2 of the insulating film 3. The first hole 31 passes through the contact 5 and temporarily accommodates the contact 5.

  The guide groove 32 communicates with one corner of the first hole 31 and extends in the left-right direction D2. When assembling the contact 5 to the insulating film 3, the guide groove 32 guides an intermediate portion 51, a connecting portion 56, and a coupling piece 57b of the contact 5 described later in the left-right direction D2.

  The contact 5 is formed by punching and bending one metal plate having conductivity and elasticity. The contact 5 has an intermediate part 51, two spring parts 52, 52, two contact parts 54, 54, a connecting part 56, and a fixing part 57. The contact 5 has a symmetrical shape with respect to a reference line L passing through the center of the intermediate portion 51 and extending in the thickness direction of the metal plate. In a state before the plurality of contacts 5 are assembled to the insulating film 3, the plurality of contacts 5 are connected to the carrier 6. A notch 61 is inserted between the contact 5 and the carrier 6.

  The intermediate part 51 is an intermediate part of the contact 5 and has a substantially strip shape.

  The spring parts 52, 52 extend from both ends of the intermediate part 51, respectively. Each of the spring portions 52 and 52 has a curved portion 52a that is curved so as to approach each other. A part of the curved portions 52 a and 52 a enters the second hole 33 when the intermediate portion 51, the connecting portion 56, and the coupling piece 57 b are accommodated in the guide groove 32.

  The contact parts 54 and 54 are respectively connected to the tip of the spring part 52. The contact parts 54 and 54 are located on a straight line parallel to the thickness direction D3 of the insulating film 3.

  The connecting part 56 connects the intermediate part 51 and the fixing part 57.

  The fixing portion 57 has two sandwiching pieces 57a and 57a and a coupling piece 57b. The two sandwiching pieces 57a and 57a face each other and extend in parallel. The interval between the two sandwiching pieces 57a and 57a is set to be smaller than the thickness dimension of the insulating film 3. Therefore, the two sandwiching pieces 57a and 57a sandwich the insulating film 3. Two convex portions 57c are formed on the sandwiching piece 57a. A beveled portion (not shown) is formed on one end surface of the convex portion 57c in the left-right direction D2. The chamfered portion is an inclined portion for facilitating inducing the insulating film 3 between the two sandwiching pieces 57a and 57a. The coupling piece 57b couples the two clamping pieces 57a and 57a.

  FIG. 3 is a plan view of the connector showing a state before the contact is placed in the first hole of the insulating film, FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is a first view of the insulating film shown in FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 5, and FIG. 7 is a view in which the contact is slid along the guide groove from the state shown in FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 7, and FIG. 9 is a cross-sectional view taken along line IX-IX in FIG.

  Next, the assembly | attachment operation | work of the contact with respect to an insulator is demonstrated based on FIGS.

  First, as shown in FIGS. 3 and 4, the contact 5 connected to the carrier 6 is disposed above the first hole 31. At this time, the contact 5 is positioned with respect to the first hole 31 so that each contact 5 and each first hole 31 face each other.

  Next, as shown in FIGS. 5 and 6, the carrier 6 is lowered and half of the contact 5 is temporarily passed through the first hole 31.

  Thereafter, as shown in FIGS. 7 to 9, the carrier 6 is moved in the left-right direction D <b> 2 to insert the intermediate portion 51, the connecting portion 56, and the coupling piece 57 b of the contact 5 into the guide groove 32. As a result, the sandwiching pieces 57 a and 57 a of the fixing part 57 sandwich a part of the insulating film 3, and a part of the curved part 52 a of the spring part 52 enters the second hole 33. In this way, the plurality of contacts 5 are positioned on the insulating film 3 at once and firmly fixed.

  Finally, the notch 61 is bent and broken to separate the carrier 6 from the contact 5.

  Through the above operations, the plurality of contacts 5 are assembled to the insulating film 3.

  10 is a cross-sectional view showing a state in which the connector shown in FIG. 1 is disposed between the printed circuit board and the integrated circuit. FIG. 11 is a cross-sectional view showing a state in which the printed circuit board and the integrated circuit are pressed against the connector from the state shown in FIG. It is.

  Next, a method for using the connector 1 will be described.

  First, as shown in FIG. 10, the connector 1 is disposed between a printed circuit board (connection object) 91 and an LGA type integrated circuit (connection object) 92. At this time, the connector 1 is positioned with respect to the printed circuit board 91 and the integrated circuit 92 so that the contact portions 54 and 54 face the lands 911 and 921. The LGA is a land grid array.

  Next, as shown in FIG. 11, the printed circuit board 91 and the integrated circuit 92 are pressed against the contact 5 with the interval between the printed circuit board 91 and the integrated circuit 92 narrowed, and in this state, fixing means (not shown) such as bolts and nuts. ) To couple the printed circuit board 91 and the integrated circuit 92 together. As a result, the contact portions 54 and 54 come into contact with the lands 911 and 921, and the printed circuit board 91 and the integrated circuit 92 are electrically connected through the contacts 5.

  Next, effects of the first embodiment will be described.

  According to the first embodiment, the fixing portion 57 is insulated by simply passing the contact 5 through the first hole 31 and then accommodating the intermediate portion 51, the connecting portion 56 and the coupling piece 57 b of the contact 5 in the guide groove 32. Since a part of 3 is clamped, the contact 5 can be easily assembled to the insulating film 3.

  Moreover, since the fixing | fixed part 57 has a pair of clamping pieces 57a, the area where the fixing | fixed part 57 contacts the insulating film 3 is large, As a result, the fixing | fixed part 57 can clamp the insulating film 3 more reliably.

  Furthermore, since the convex part 57c is formed in a pair of clamping piece 57a, 57a, a pair of clamping piece 57a, 57a can clamp the insulating film 3 more strongly.

  Further, since the insulating film 3 can be easily introduced between the sandwiching pieces 57a by the surface beveled portion of the convex portion 57c, the contact 5 can be easily assembled to the insulating film 3.

  Furthermore, since the contact 5 has a symmetrical shape with respect to the reference line L extending in the thickness direction of the metal plate 4 through the center of the intermediate portion 51, when the connector 1 is sandwiched between the printed circuit board 91 and the integrated circuit 92, The forces applied to the two contact portions 54 are offset, no moment is generated in the contact 5, and deformation of the insulating film 3 can be prevented.

  In addition, if the intermediate portion 51, the connecting portion 56, and the coupling piece 57 b of the contact 5 are slid along the guide groove 32, a part of the two curved portions 52 a facing the contact 5 enters the second hole 33. The contact 5 is positioned on the insulating film 3, and the posture is also stabilized.

  In this embodiment, the insulating film 3 is used as an insulator, but the insulator is not limited to the insulating film 3 and may be, for example, an insulating plate.

  Moreover, although what has a pair of clamping piece 57a is used as the fixing | fixed part 57, the aspect of a fixing | fixed part is not restricted to this.

  The connector of this embodiment connects the printed circuit board 91 and the LGA type integrated circuit 92, but the application is not limited to this. For example, a BGA (ball grid array) type integrated circuit and a printed circuit board are used. The present invention can also be applied to a device that connects a pair of printed circuit boards and a device that connects a pair of printed circuit boards.

  12 is a cross-sectional view showing a state in which a connector using contacts according to the second embodiment of the present invention is disposed between the printed circuit board and the integrated circuit. FIG. 13 shows the state of the printed circuit board and the integrated circuit from the state shown in FIG. It is sectional drawing which shows the state pressed on the connector.

  Portions common to the first embodiment are denoted by the same reference numerals as those in the first embodiment, description thereof is omitted, and only different portions are described.

  The spring portions 52, 52 of the contact 5 of the connector 1 of the first embodiment are bent in a substantially U shape, and the contact portions 54, 54 are located in the vicinity of the intermediate portion 51, whereas the connector of the second embodiment The spring portions 252 and 252 of the contact 205 of 201 are bent substantially in a V shape, and the contact portions 254 and 254 are located away from the intermediate portion 51.

  In the second embodiment, the curved portion 252a is located closer to the intermediate portion 51 than the curved portion 52a of the first embodiment, and accordingly, the second hole 233 of the insulating film 203 is formed accordingly.

  Next, connection work of the connector 201 will be described.

  Similar to the first embodiment, first, as shown in FIG. 12, the connector 201 is disposed between the printed circuit board (connection object) 91 and the integrated circuit (connection object) 92.

  Next, as shown in FIG. 13, the printed circuit board 91 and the integrated circuit 92 are pressed against the contact 5, and in this state, the printed circuit board 91 and the integrated circuit 92 are coupled together by fixing means (not shown) such as bolts and nuts. . As a result, the contact portions 254 and 254 come into contact with the lands 911 and 921, and the printed circuit board 91 and the integrated circuit 92 are electrically connected through the contacts 205. At this time, since the curved portions 252 a of the two spring portions 252 of the contact 205 are in contact with each other, electricity flows only between the two spring portions 252 and flows between the printed circuit board 91 and the integrated circuit 92. Accordingly, the current path length is shorter than that of the first embodiment.

  The second embodiment has the same operational effects as the first embodiment, and since the electrical path length in the contact 205 is shorter than that of the first embodiment, the impedance can be made smaller than that of the first embodiment.

FIG. 1 is a perspective view showing a part of a connector using contacts according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a state before the contacts are assembled to the insulating film shown in FIG. FIG. 3 is a plan view of the connector showing a state before the contact is accommodated in the first hole of the insulating film. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5 is a plan view showing a state when a contact is inserted into the first hole of the insulating film shown in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. FIG. 7 is a plan view showing a state when the contact is slid along the guide groove from the state shown in FIG. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. FIG. 10 is a cross-sectional view showing a state in which the connector shown in FIG. 1 is disposed between the printed circuit board and the integrated circuit. 11 is a cross-sectional view showing a state where the printed circuit board and the integrated circuit are pressed against the connector from the state shown in FIG. FIG. 12 is a sectional view showing a state in which a connector using contacts according to the second embodiment of the present invention is disposed between a printed circuit board and an integrated circuit. 13 is a cross-sectional view showing a state in which the printed circuit board and the integrated circuit are pressed against the connector from the state shown in FIG.

Explanation of symbols

1,201 Connector 3,203 Insulation film (insulator)
31 1st hole 32 Guide groove 33,233 2nd hole 4 Metal plate 5,205 Contact 51 Intermediate part 52,252 Spring part 52a, 252a Bending part 54,254 Contact part 56 Connection part 57 Fixing part 57a Holding piece 57b Bond piece 91 Printed circuit board (object to be connected)
92 Integrated circuit (object to be connected)

Claims (4)

In a contact that is formed by punching and bending a metal plate and assembled to an insulator,
Two spring portions connected to both ends of the intermediate portion;
Two contact parts connected to the tip side of these spring parts,
And a fixing part that is connected to the intermediate part via a connecting part in a planar direction of the metal plate and sandwiches a part of the insulator.   The contact according to claim 1, wherein the contact has a symmetrical shape with respect to a reference line passing through a center of the intermediate portion and extending in a thickness direction of the metal plate. A plurality of contacts and an insulator to which the plurality of contacts are assembled;
In a connector arranged between a pair of connection objects to electrically connect both connection objects,
The contact is connected in the contact arrangement direction to the intermediate part via two connecting parts, two spring parts connected to both ends of the intermediate part, a contact part connected to the tip side of these spring parts, and the intermediate part. A fixing part for sandwiching the part,
The insulator includes a first hole through which the contact passes, and a guide groove that leads to the first hole and guides the intermediate portion, the connecting portion, and the fixing portion in a predetermined direction. . The spring portion has two curved portions that are curved so as to approach each other,
The insulator is located in the vicinity of the first hole, and when the intermediate portion, the connecting portion, and the fixing portion are slid along the guide groove, a part of the two curved portions facing each other is formed. The connector according to claim 3, wherein the connector has a second hole to enter.

Images