JP2005141948A - Electric connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector whose height dimension can be smaller and conductive path can be reduced while removing possibility that a high frequency transmission characteristic may become unstable. <P>SOLUTION: This connector is equipped with a plurality of conductive bottomed cylindrical bodies 10 which are electrically connected respectively to a plurality of lands 3 on the circuit board 1 in the lower position, and conductive connectors 20 which are respectively fitted in the bottomed cylindrical bodies 10 in the state of contact with the cylindrical bodies 10 so as to be exposed in each upper end, and electrically connected to the contacts of a liquid crystal panel in the upper position. At least a part of each conductive connector 20 is made of elastic elastomer, and the circuit board 1 and the liquid crystal panel are electrically connected. Since conductivity is secured by connecting the metallic bottomed cylindrical bodies 10 with the elastomer-made conductive connectors 20, the high frequency transmission characteristic does not become unstable. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electrical connector for electrically connecting a circuit board and a liquid crystal panel, a circuit board and an electronic component, or a plurality of circuit boards.

Although not shown, a conventional electrical connector includes a housing interposed between opposing circuit boards and a liquid crystal panel, and a hollow conductive toe pin that is inserted into a plurality of through holes of the housing and protrudes slidably from the back surface. And a conductive head pin that is inserted into each conductive toe pin and protrudes slidably from the surface of the housing, and a coil spring that is interposed between the conductive toe pin and the conductive head pin and elastically biases them in opposite directions. It is comprised (refer patent document 1).
JP 2002-329540 A

  Since the conventional electrical connector is configured as described above, the height of the connector can be reduced to shorten the conduction path and realize a low load connection, but the conductive toe pin and the conductive head pin are in contact with each other. Therefore, it is conceivable that the high frequency transmission characteristics are destabilized because electrical conduction is ensured. In addition, because the coil spring having a predetermined length is compressed or restored, it may be difficult to shorten the conduction path by reducing the height (length) dimension of the connector.

  The present invention has been made in view of the above, and eliminates the possibility that the high-frequency transmission characteristics become unstable, and provides an electrical connector capable of shortening the conduction path by reducing the height dimension of the connector. It is aimed.

In the present invention, in order to solve the above-mentioned problem, it is interposed between a plurality of electrical joints, and electrically connects the plurality of electrical joints,
A conductive bottomed cylinder that is electrically connected to one electrical joint, and is fitted into the bottomed tubular body in contact with its free end to be exposed to another electrical joint. A conductive connector connected to the
It is characterized in that at least a part of the conductive connector is made of an elastic elastomer.

Further, in the present invention, in order to solve the above-mentioned problem, it is interposed between a plurality of electrical joints, and electrically connects the plurality of electrical joints,
An insulating support interposed between a plurality of electrical joints, a conductive sealing body fitted in a through hole of the support and electrically connected to one electrical joint, and the sealing A conductive connector that contacts the body to expose its free end and is electrically connected to other electrical joints;
It is characterized in that at least a part of the conductive connector is made of an elastic elastomer.

Further, in the present invention, in order to solve the above-mentioned problem, it is interposed between a plurality of electrical joints, and electrically connects the plurality of electrical joints,
An insulating support interposed between a plurality of electrical joints, a conductive sealing body fitted in a through-hole of the support and electrically connected to one electrical joint, and A conductive connector that is fitted into the through hole and is in electrical contact with the sealing body; and a conductive fitting pin that is fitted into the through hole of the support and is electrically connected to another electrical joint. Including
One end inside the through hole of the support is formed in a stepped shape, at least a part of the conductive connector is formed of an elastic elastomer, the fitting pin is brought into contact with the conductive connector, and the pin portion is stepped in the through hole. It is characterized by being exposed from the side.

  Here, the electrical joints in the claims include various circuit boards (printed wiring boards, flexible mounting boards, and the like), liquid crystal panels, and the like constituting at least small-sized information communication devices including mobile phones, electronic notebooks, personal computers, etc. Electrical and electronic parts (BGA type semiconductor packages and the like) are included. Examples of the bottomed cylinder include a bottomed cylinder, a rectangular cylinder, a polygonal cylinder, and the like. The conductive connector is appropriately formed in a columnar shape, a prismatic shape, a truncated cone shape, a truncated pyramid shape, or the like. These may have a relationship in which a conductive connector is a column with respect to a bottomed cylindrical body of a rectangular tube, and a plurality of gaps are formed between the bottomed cylindrical body and the conductive connector.

  The support is provided with a plurality of through holes, and each through hole is formed in a cylindrical shape, a rectangular tube shape, a polygonal tube shape, or the like. In the case where there are a plurality of through holes, the through holes are arranged in a row, a plurality of rows, and at random. The sealing body is formed in, for example, a disk or a convex shape. At least a part of the conductive connector is formed of an elastic elastomer, which may be conductive or insulating. Furthermore, according to the electrical connector according to the present invention, not only the electrical joint in the vertical direction but also the electrical joint in the left-right direction can be suitably connected.

  According to the present invention, a conductive connector formed entirely or partially by a conductive bottomed cylinder and an elastomer, a conductive connector formed entirely or partially by a conductive sealing body and an elastomer, or A conductive sealing body, a conductive connector formed entirely or partially by an elastomer, and a fitting pin are brought into contact with each other to ensure electrical connection of a plurality of electrical joints. Further, a spring member such as a coil spring is not required for electrical connection.

  According to the present invention, there is an effect that it is possible to eliminate the possibility that the high-frequency transmission characteristic becomes unstable, and to reduce the height dimension of the connector and shorten the conduction path.

  Hereinafter, a preferred embodiment according to the first invention of the present invention will be described with reference to the drawings. The electrical connector in this embodiment is shown in FIGS. 1 (a), (b), (c) to FIG. As described above, a plurality of bottomed cylindrical bodies 10 that are conductively connected to the plurality of lands 3 of the circuit board 1, respectively, and a plurality of conductive contacts of a liquid crystal panel that are inserted into the bottomed cylindrical bodies 10 and are not shown. The circuit board 1 positioned above and below and the liquid crystal panel are electrically connected.

  As shown in FIGS. 2 and 3, the circuit board 1 has a conductive wiring pattern 2 formed on the surface of an insulating substrate by an etching method or the like, and a plurality of conductive contact points are provided at the end of the wiring pattern 2. The lands 3 are formed, and the plurality of lands 3 are arranged in a horizontal row.

  The plurality of bottomed cylindrical bodies 10 are electrically connected to the plurality of lands 3 of the circuit board 1, respectively, and are arranged in a horizontal row so as to correspond to the arrangement of the plurality of lands 3. As shown in FIG. 1A, each bottomed cylindrical body 10 is formed into a hollow bottomed cylindrical shape using, for example, a gold-plated conductive material, specifically, SUS, copper, brass, or aluminum. The closed bottom surface is bonded and fixed onto the land 3 of the circuit board 1 via solder, a conductive adhesive 11, an anisotropic conductive film (ACF) or the like.

  As shown in FIGS. 1B and 1C and FIG. 3, the plurality of conductive connectors 20 are fitted into the plurality of bottomed cylindrical bodies 10 in contact with each other, and the upper ends thereof are openings of the bottomed cylindrical body 10. Protrude from. As shown in FIG. 4, each conductive connector 20 is formed into a prismatic body by an elastic conductive elastomer 22 in which conductive particles are blended in an insulating elastomer, for example, and its upper end is electrically elastically contacted with a conductive contact of the liquid crystal panel. Is done.

  As the insulating elastomer, elastic silicone rubber, butyl rubber, butadiene rubber, urethane rubber, etc. that are excellent in temperature dependency, insulation, etc. are preferably used. The hardness of the conductive elastomer 22 in which conductive particles are blended with this insulating elastomer is set in the range of 10 ° to 90 ° H, preferably 30 ° to 70 ° H, from the viewpoint of the buffer function, moldability, and handleability. . This is because when the temperature is less than 10 ° H, an appropriate repulsive force cannot be obtained, so that the electrical connection cannot be stabilized, and the handleability is also lowered. On the contrary, when it exceeds 90 ° H, the pressure required for electrical connection becomes remarkably high, and a large warp occurs in the circuit board 1 and the like.

  The conductive connector 20 can be fitted into the bottomed cylindrical body 10 bonded and fixed to the circuit board 1 or can be inserted into the bottomed cylindrical body 10 before being bonded and fixed to the circuit board 1. Further, the conductive connector 20 is not limited to the shape and structure shown in FIG. For example, the conductive elastomer 22 is sandwiched between a pair of insulating elastomers 21 (see FIG. 5), or the substantially thin plate-shaped conductive elastomer 22 and the insulating elastomer 21 are alternately disposed between the pair of insulating elastomers 21. They can be sandwiched side by side and formed into a prismatic shape (see FIG. 6).

  Further, a plurality of conductive thin wires 23 are embedded in a matrix shape in a block-shaped insulating elastomer 21 to expose both upper and lower ends of each conductive thin wire 23 (see FIG. 7), or a plurality of conductive thin wires 23 are formed on the insulating elastomer 21. Can also be formed by exposing the upper and lower ends of each conductive wire 23 (see FIG. 8).

  According to the above configuration, the metal conductive toe pin and the conductive head pin are not brought into contact with each other, but the metal bottomed cylindrical body 10 and the elastomeric conductive connector 20 are brought into contact with each other to ensure electrical conduction. Therefore, there is no destabilization of the high frequency transmission characteristics. Further, since the coil spring can be omitted without using the coil spring, the height dimension of the connector can be made smaller and the conduction path can be shortened.

  Further, since the elastic conductive connector 20 is not directly brought into contact with the land 3 but is connected and fixed via the metal bottomed cylindrical body 10, the mounting can be stabilized and ensured. In addition, since the conductive connector 20 is a rectangular column with respect to the cylindrical bottomed cylindrical body 10 and a gap is formed between these 10 and 20 which are in partial contact with each other, the fitting operation can be facilitated and facilitated. become. Furthermore, since the number of parts is smaller than that of the conventional example, the configuration can be simplified.

  Next, FIGS. 9A, 9B to 11 show a preferred embodiment according to the second invention of the present invention. In this case, the electrical connector is connected between the circuit board 1 and the liquid crystal panel. A support block 30 interposed between the plurality of pellets 40 and the plurality of pellets 40 inserted into the plurality of through holes 31 of the support block 30 to be conductively connected to the circuit board 1. A plurality of conductive connectors 20 to be connected are used.

  The support block 30 is formed into a substantially rectangular block using an insulating resin, and a plurality of round through holes 31 are perforated in a horizontal row. Specifically, polycarbonate, polybutylene terephthalate, polyethersulfone, etc. having impact resistance and flexibility are used as the insulating resin.

  The pellet 40 is formed in a disk shape using, for example, a gold-plated conductive material, specifically, SUS, copper, brass, or aluminum, and is fitted so as to close the bottom of the through hole 31. It is bonded and fixed on the lands 3 of the circuit board 1 via solder, a conductive adhesive 11, an anisotropic conductive film (ACF) or the like.

  As shown in FIGS. 9A, 9 </ b> B, and 10, the plurality of conductive connectors 20 are inserted into the through holes 31 of the support block 30, and their upper ends protrude from the surface of the support block 30. As shown in FIGS. 10 and 11, each conductive connector 20 is formed into a prismatic body by an elastic conductive elastomer 22 in which conductive particles are blended with an insulating elastomer, for example, and the upper end portion is electrically connected to a conductive contact of the liquid crystal panel. Hit by

  As the insulating elastomer, elastic silicone rubber, butyl rubber, butadiene rubber, urethane rubber, etc. that are excellent in temperature dependency, insulation, etc. are preferably used. The hardness of the conductive elastomer 22 in which conductive particles are blended with this insulating elastomer is set in the range of 10 ° to 90 ° H, preferably 30 ° to 70 ° H, from the viewpoint of the buffer function, moldability, and handleability. . This is because when the temperature is less than 10 ° H, an appropriate repulsive force cannot be obtained, so that the electrical connection cannot be stabilized, and the handleability is also lowered. On the other hand, when it exceeds 90 ° H, the pressure required for electrical connection is remarkably increased, and this is based on the reason that the circuit board 1 and the like are largely warped.

  The conductive connector 20 can be fitted into the support block 30 that is bonded and fixed to the circuit board 1, or can be fitted into the support block 30 before being bonded and fixed to the circuit board 1. Further, the conductive connector 20 is not limited to the shape and structure shown in FIG. For example, the conductive elastomer 22 is sandwiched between a pair of insulating elastomers 21 (see FIG. 5), or the substantially thin plate-shaped conductive elastomer 22 and the insulating elastomer 21 are alternately disposed between the pair of insulating elastomers 21. They can be sandwiched side by side and formed into a prismatic shape (see FIG. 6).

  Further, a plurality of conductive thin wires 23 are embedded in a matrix shape in a block-shaped insulating elastomer 21 to expose both upper and lower ends of each conductive thin wire 23 (see FIG. 7), or a plurality of conductive thin wires 23 are formed on the insulating elastomer 21. Can also be formed by exposing the upper and lower ends of each conductive wire 23 (see FIG. 8). The other parts are the same as those in the above embodiment, and the description thereof is omitted.

  In this embodiment, the same effect as that of the above embodiment can be expected, and since the support block 30 having a plurality of conductive connectors 20 is used, the pellets 40 and the conductive connections are connected to the plurality of lands 3 of the circuit board 1. Obviously, it becomes very easy to position and connect the child 20 in a conductive manner.

  Next, FIGS. 12A, 12B to 14 show a preferred embodiment according to the third aspect of the present invention. In this case, the electrical connector is connected between the circuit board 1 and the liquid crystal panel. Insulating support block 30 interposed between the plurality of pellets 40 inserted into the through hole 31 of the support block 30 and conductively connected to the circuit board 1, and inserted into the through hole 31 of the support block 30 And a plurality of conductive connectors 20 that are in conductive contact with each pellet 40 and a plurality of conductive fitting pins 50 that are inserted into the through holes 31 of the support block 30 and are conductively connected to the liquid crystal panel. ing.

  As shown in FIGS. 12A, 12B to 14, the support block 30 is formed into a substantially rectangular block using an insulating resin, and a plurality of round through holes 31 are perforated in a horizontal row. The upper end portion 32 of each through-hole 31 is formed to have a stepped diameter and restricts the fitting pin 50 from popping out and falling off.

  As shown in FIGS. 13 and 14, the plurality of conductive connectors 20 are inserted into the through holes 31 of the support block 30, and each conductive connector 20 is made of, for example, an elastic conductive elastomer 22 in which conductive particles are blended in an insulating elastomer. Molded into a prismatic body. The material and hardness of the insulating elastomer are the same as in the above embodiment.

  The conductive connector 20 is not limited to the shape and structure shown in FIG. For example, the conductive elastomer 22 is sandwiched between a pair of insulating elastomers 21 (see FIG. 5), or the substantially thin plate-shaped conductive elastomer 22 and the insulating elastomer 21 are alternately disposed between the pair of insulating elastomers 21. They can be sandwiched side by side and formed into a prismatic shape (see FIG. 6).

  Further, a plurality of thin conductive wires 23 are embedded in a matrix in a block-shaped insulating elastomer 21 to expose the upper and lower ends of each thin conductive wire 23 (see FIG. 7), or a plurality of thin conductive wires 23 are provided on the insulating elastomer 21. It is also possible to embed them side by side and expose the upper and lower ends of each conductive wire 23 (see FIG. 8).

  Each fitting pin 50 is formed in a substantially hat shape using, for example, a gold-plated conductive material, specifically copper, brass, or aluminum, as shown in FIGS. Is done. The fitting pin 50 is mounted and supported on the upper end portion of the conductive connector 20, and the small-diameter pin portion 51 protrudes from the upper end portion 32 on the stepped side of the through hole 31 and is electrically connected to the liquid crystal panel. The other parts are the same as those in the above embodiment, and the description thereof is omitted.

  In this embodiment, the same effect as that of the above embodiment can be expected, and since the support block 30 having a plurality of conductive connectors 20 is used, the pellets 40 and the conductive connections are connected to the plurality of lands 3 of the circuit board 1. It is very easy to position and connect the child 20 in a conductive manner. Furthermore, since the hard fitting pin 50 is conductively connected to the liquid crystal panel instead of the conductive connector 20 that is compressively deformed, the posture during conduction is stabilized.

  In addition, the shape and structure of the pellet 40, each conductive connector 20, and each fitting pin 50 are not limited to the said embodiment at all. For example, as shown in FIG. 15, the pellet 40 is formed into a hollow convex shape, the cylindrical conductive connector 20 is fitted into the pellet 40, and the fitting pin 50 is fitted to the upper end portion of the conductive connector 20. You may insert the lower end part which exhibited the column shape.

BRIEF DESCRIPTION OF THE DRAWINGS It is perspective explanatory drawing which shows embodiment of the electrical connector which concerns on 1st invention of this invention, (a) A figure is sectional explanatory drawing which shows a bottomed cylindrical body, (b) A figure shows a conductive connector in a bottomed cylindrical body. Sectional explanatory drawing which shows the state inserted, (c) The figure is explanatory drawing which shows the state which connected the bottomed cylindrical body of figure (b) figure to the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of an electrical connector according to a first invention of the present invention. It is a perspective explanatory view showing an embodiment of an electric connector concerning the 1st invention of the present invention. It is an isometric view explanatory drawing which shows the conductive connector in embodiment of the electrical connector which concerns on 1st invention of this invention. It is a perspective explanatory view showing other conductive connectors in an embodiment of an electric connector concerning the 1st invention of the present invention. It is a perspective explanatory view showing other conductive connectors in an embodiment of an electric connector concerning the 1st invention of the present invention. It is a perspective explanatory view showing other conductive connectors in an embodiment of an electric connector concerning the 1st invention of the present invention. It is a perspective explanatory view showing other conductive connectors in an embodiment of an electric connector concerning the 1st invention of the present invention. It is a perspective explanatory view showing an embodiment of an electric connector concerning the 2nd invention of the present invention, and (a) is a cross-sectional explanatory view showing a state where a conductive connector is electrically loosely fitted in a through hole of a support block. b) The figure is sectional explanatory drawing which shows the state which connected and fixed the support block of the figure (a) to a circuit board. It is a disassembled perspective explanatory drawing which shows embodiment of the electrical connector which concerns on 2nd invention of this invention. It is a perspective explanatory view showing an embodiment of an electrical connector concerning the 2nd invention of the present invention. It is perspective explanatory drawing which shows embodiment of the electrical connector which concerns on 3rd invention of this invention, (a) A cross-sectional explanatory drawing which shows the state which combines a fitting pin, a conductive connector, and a pellet with the through-hole of a support block. (B) is sectional explanatory drawing which shows the state which connected and fixed the support block of the completed (a) figure to a circuit board. It is a disassembled perspective explanatory drawing which shows embodiment of the electrical connector which concerns on 3rd invention of this invention. It is a perspective explanatory view showing an embodiment of an electrical connector concerning the 3rd invention of the present invention. It is a disassembled perspective explanatory drawing which shows other embodiment of the electrical connector which concerns on 3rd invention of this invention.

Explanation of symbols

1 Circuit board (electrical joint)
3 Land 10 Bottomed cylinder (bottomed cylinder)
DESCRIPTION OF SYMBOLS 11 Conductive adhesive 20 Conductive connector 21 Insulating elastomer 22 Conductive elastomer 30 Support block (support body)
31 Through hole 32 Upper end 40 of the through hole Pellet (sealing body)
50 Mating pin 51 Pin part

Claims (3)

An electrical connector interposed between a plurality of electrical joints to electrically connect the plurality of electrical joints,
A conductive bottomed cylinder that is electrically connected to one electrical joint, and is fitted into the bottomed tubular body in contact with its free end to be exposed to another electrical joint. A conductive connector connected to the
An electrical connector, wherein at least a part of the conductive connector is formed of an elastic elastomer. An electrical connector interposed between a plurality of electrical joints to electrically connect the plurality of electrical joints,
An insulating support interposed between a plurality of electrical joints, a conductive sealing body fitted in a through hole of the support and electrically connected to one electrical joint, and the sealing A conductive connector that contacts the body to expose its free end and is electrically connected to other electrical joints;
An electrical connector, wherein at least a part of the conductive connector is formed of an elastic elastomer. An electrical connector interposed between a plurality of electrical joints to electrically connect the plurality of electrical joints,
An insulating support interposed between a plurality of electrical joints, a conductive sealing body fitted in a through-hole of the support and electrically connected to one electrical joint, and A conductive connector that is fitted into the through hole and is in electrical contact with the sealing body; and a conductive fitting pin that is fitted into the through hole of the support and is electrically connected to another electrical joint. Including
One end inside the through hole of the support is formed in a stepped shape, at least a part of the conductive connector is formed of an elastic elastomer, the fitting pin is brought into contact with the conductive connector, and the pin portion is stepped in the through hole. An electrical connector characterized by being exposed from the side.

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