JP4632133B2 - Conductive connection device - Google Patents

Description

  The present invention relates to a conductive connection device, and more particularly to a conductive connection device that realizes electrical connection with little deterioration with time.

  In IT-related information devices, it is required that all manufactured information devices satisfy a certain level by eliminating variations in quality among products. In particular, design and manufacture information equipment not only immediately after the information equipment is manufactured, but also taking into account deterioration in quality due to deterioration over time, and satisfying a certain level even after a predetermined period. Is needed.

  In such an information device, an electrical connection part can be cited as a part that is susceptible to deterioration with time. In the electrical connection portion, the degree of oxidation of the connection portion varies depending on the connection method and the degree of connection. For this reason, when the degree of oxidation is large, the impedance is lowered, resulting in a problem on the circuit.

  As a conventional connection method, for example, in the case of ground connection as an EMC measure, there is a method in which a joint surface between a connection object and a connection portion is aligned and screwed. In this case, since the surface of the connection object and the connection portion has fine irregularities, there is a problem that the area of the actually joined portion is small. For this reason, when a connection target object or a connection part has oxidized, the problem that the oxidation in a junction part will advance easily will arise.

  In order to cope with such a problem, Japanese Patent Application Laid-Open No. 10-199706 (Patent Document 1) discloses a polymer element mixed with conductive particles. In Patent Document 1, low contact resistance is obtained by a configuration having two surfaces, a portion with a large amount of conductive particles and a portion with a small amount of conductive particles. As a result, the bonding area may be reduced.

Japanese Patent Laid-Open No. 8-109367 (Patent Document 2) discloses a method in which a conductive gasket is sandwiched between an object to be connected and a connection portion. Cannot be resolved.
JP-A-10-199706 JP-A-8-109367

  Therefore, the present invention has been made in view of the above problems, and even when used in an information device that generates vibrations, it is possible to ensure a stable electrical connection with little deterioration over time. An object is to provide a connection device.

In order to solve the above problems, the conductive connection device according to the present invention is:
A storage part in which a space is formed inside, and an upper part and a lower part of the space are open, and
A first magnet provided at the upper part of the storage part and formed so that the upper part of the open outer main part is opened as it is;
A second magnet provided at a lower portion of the storage portion and formed so that a lower portion of the open storage portion is opened as it is;
A first conductive portion that is housed on the upper side of the internal space in the housing portion, has a property of repelling the magnet, and is formed of a conductive material having a property of being easily scraped; and
A second conductive portion housed on the lower side of the internal space in the housing portion, having a property of repelling the magnet and formed of a conductive material having a property of being easily scraped;
A first elastic member formed of a conductive material, which connects the first conductive portion and the second conductive portion, and includes the first conductive portion and the second conductive portion. The first conductive portion is joined to the first connection object from the opened upper portion, and the second conductive portion is moved from the opened lower portion to the first conductive portion. A first elastic member to be joined to two connection objects;
It is characterized by providing.

  In this case, the storage portion may have a cylindrical shape. Further, the first magnet and the second magnet may have a cylindrical shape.

  Further, the conductive connection device connects the first magnet and the second magnet, urges the first magnet and the second magnet in the length direction of the storage portion, and You may make it further provide the 2nd elastic member which makes the length of the length direction of an electroconductive connection device variable.

In addition, the conductive connection device
A first magnetic body portion provided at an upper end portion of the storage portion and formed of a magnetic body, the first magnetic body portion adsorbing the first magnet;
A second magnetic body portion provided at a lower end of the storage portion and formed of a magnetic body, the second magnet body being attracted by the second magnet;
May be further provided.

  Further, each of the first elastic member and the second elastic member may be formed by a coil spring.

  The storage portion may be formed of a non-conductive material. The first conductive portion and the second conductive portion may be made of graphite.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below do not limit the technical scope of the present invention.

  FIG. 1 is a cross-sectional view for explaining an internal configuration of an information device 10 according to an embodiment of the present invention. As shown in FIG. 1, the information device 10 according to the present embodiment includes an upper housing 12 and a lower housing 14, and a space formed by the upper housing 12 and the lower housing 14. A display unit 20 and a hard disk drive 22 are housed inside. In the present embodiment, the display unit 20 is configured by an LCD (Liquid Crystal Display).

  The display unit 20 and the hard disk drive 22 are attached to a metal chassis 30. The hard disk drive 22 has an electronic board 32 attached thereto. Further, a conductive connection device 40 is provided between the chassis 30 and the electronic board 32 to electrically connect the chassis 30 and the electronic board 32. In addition, a conductive connection device 40 is also provided between the electronic substrate 32 and the lower housing 14 to electrically connect the electronic substrate 32 and the lower housing 14. In the present embodiment, the reason why the conductive connection device 40 electrically connects the various parts of the information apparatus 10 is to make the potentials of the various parts constant.

  FIG. 2 is a cross-sectional view for explaining the configuration of the conductive connection device 40 according to this embodiment, and FIG. 3 is a plan view seen from the direction of arrow A in FIG.

  As shown in FIGS. 2 and 3, a cylindrical magnet 60 is provided at the upper end and the lower end of the cylindrical storage unit 50. A space is formed inside the storage unit 50, and the upper and lower portions of the storage unit 50 are open. A space is also formed inside the magnet 60, and the upper and lower portions of each magnet 60 are open.

  The inner diameter of the magnet 60 is formed so as to be slightly larger than the outer diameter of the storage portion 50, and thus the cylindrical magnet 60 can be fitted to the outside of the cylindrical storage portion 50. In the present embodiment, the storage portion 50 is formed of a resin that is an example of a non-conductive material, and the magnet 60 is formed of a neodymium magnet that is an example of a magnet.

  Further, a magnetic body 70 is formed on the outer periphery of the upper end portion and the lower end portion of the storage portion 50 by applying a magnetic body. Examples of the magnetic material include iron, nickel, cobalt, gadolinium, and the like. These may be applied alone, or may be applied in any combination of a plurality of materials. The magnet 60 is attached to the cylindrical portion 60 by attracting the magnet 60 to the magnetic body portion 70.

  As described above, since the magnet 60 is attached to the storage unit 50 by the magnetic force, the magnet 60 does not shift while being attached to the storage unit 50 only by applying a small force. On the other hand, by applying a large force, the magnet 60 can be slid in the length direction of the storage portion 50, and the entire length of the conductive connection device 40 can be adjusted.

  Moreover, the elastic member 80 is attached to the magnet 60, respectively, and the two magnets 60 are connected. Specifically, one end of the elastic member 80 is attached to the upper magnet 60 by an adhesive 90, and the other end of the elastic member 80 is attached to the lower magnet 60 by an adhesive 90.

  In the present embodiment, the elastic member 80 is configured by a coiled spring, and both ends of the spring are fixed to the magnet 60 by an adhesive. For this reason, the magnet 60 and the elastic member 80 are configured not to be separated. Therefore, the two magnets 60 are urged by the elastic member 80 so as to spread in the length direction of the storage unit 50.

  Further, two conductive parts 100 are stored inside the storage part 50. The conductive portion 100 has a cylindrical shape, and the outer diameter of the conductive portion 100 is smaller than the inner diameter of the storage portion 50. For this reason, the conductive part 100 is movable in the length direction inside the storage part 50.

  The conductive portion 100 needs to be formed of a conductive material having a property of repelling the magnet 60 and a material that can be easily cut. For example, the conductive portion 100 can be composed of any one of graphite, germanium (Ge), and silicon (Si), or can be composed of a material obtained by arbitrarily combining these plural materials. In the present embodiment, the conductive portion 100 is formed of graphite which is considered to be the most suitable material among them.

  The two conductive parts 100 are connected by an elastic member 110. In the present embodiment, the elastic member 110 is configured by a coiled spring, and is configured by a conductive material such as metal. Then, by embedding one end portion of the coiled spring in the upper conductive portion 100 and embedding the other end portion in the lower conductive portion 100, the two conductive portions 100 are connected via the elastic member 110.

  For this reason, each of the two conductive portions 100 is biased by the elastic member 110 so as to spread in the length direction of the storage portion 50. Also, one conductive part 100 is electrically connected to the other conductive part 100.

  As described above, since the conductive part 100 can move in the space inside the storage part 50, the two conductive parts urged by the elastic member 110 protrude from the open ends of the storage part 50, respectively. Attempt to join with connection object.

  FIG. 4 is a partially enlarged cross-sectional view when the conductive connection device 40 is connected to the connection object 200. Since the conductive connection device 40 is configured symmetrically in the vertical direction, a joining state similar to that of FIG. 4 appears on the opposite side of the conductive connection device 40.

  As shown in FIG. 4, when the conductive connection device 40 is attached to the connection object 200, the conductive portion 100 is urged in the length direction of the conductive connection device 40, so that the conductive portion 100 is opened. The end surface of the conductive portion 100 is joined to the connection object 200 so as to protrude from the end portions of the storage portion 50 and the magnet 60 that are present. For this reason, the connection object 200 and the conductive part 100 are electrically connected.

  Further, in the present embodiment, since the conductive part 100 is formed of a material that can be easily cut, even if the surface of the connection target 200 is rough and there are many small irregularities, the conductive part 100 is scraped to remove the irregularities. Since it is buried, sufficient electrical connectivity can be ensured.

  Moreover, even if the information device 10 to which the conductive connection device 40 is attached is shaken by vibration, the conductive portion 100 urged by the elastic member 110 is scraped to keep the electrical connectivity. For this reason, it is possible to realize electrical joining with extremely little deterioration with time.

  Furthermore, since the powder scraped from the conductive portion 100 has a diamagnetic property, the magnet 60 can prevent the powder from being scattered outside the conductive connection device 40. That is, since the magnet 60 is biased by the elastic member 80, the magnet 60 is in close contact with the connection target 200. Then, the diamagnetic powder scraped from the conductive part 100 repels the magnet 60 and stays inside the magnet 60 and inside the storage part 50. For this reason, it is possible to avoid the risk that the scraped powder is scattered outside the conductive connection device 40 and causes an electrical short inside the information device 10.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, the above-described spring is an example of the elastic member 80 and the elastic member 110, and the magnet 60 and the conductive part 100 may be biased so as to spread in the length direction of the conductive connection device 40 by other means. . For example, the upper part and the lower part of the storage part 50 may be sealed with a magnet, and the conductive connection device 40 may be expanded and contracted by air pressure to bias the magnet 60 and the conductive part 100.

  In addition, the conductive connection device 40 can be applied not only to the information device 10 but also to a portion that ensures electrical connection in various devices.

  In the above-described embodiment, the case where the storage unit 50 has a cylindrical shape has been described as an example. However, the shape of the storage unit 50 is not limited to a cylindrical shape. For example, the storage unit 50 may have a cylindrical shape with a triangular cross section. That is, any shape may be used as long as a space is formed inside and an upper portion and a lower portion are opened so that the conductive portion 100 housed in the space can pass therethrough.

  In this case, the magnet 60 may be matched to the shape of the storage unit 50. For example, when the cross section of the storage unit 50 is triangular or square, the cross section of the magnet 60 may be triangular or square in accordance with this. That is, the magnet 60 has a space formed therein, and the upper and lower portions of the storage unit 50 that are open are opened as they are, so that the conductive unit 100 stored in the magnet 60 can pass therethrough. You can do it.

Sectional drawing for demonstrating an example of the internal structure of the information equipment with which the electroconductive connection device which concerns on one Embodiment of this invention was used. The figure for demonstrating an example of the internal structure of the electroconductive connection apparatus which concerns on one Embodiment of this invention. The top view which looked at the electroconductive connection apparatus of FIG. 2 from the arrow A direction. The partial expanded sectional view which shows the state of the end of the conductive connection apparatus in the state which connected the conductive connection apparatus of FIG. 2 to the connection target object.

Explanation of symbols

DESCRIPTION OF SYMBOLS 50 Storage part 60 Magnet 70 Magnetic body part 80 Elastic member 90 Adhesive 100 Conductive part 110 Elastic member

Claims (6)

A storage part in which a space is formed inside, and an upper part and a lower part of the space are open, and
A first magnet provided at the upper part of the storage part and formed so that the upper part of the open storage part is opened as it is;
A second magnet provided at a lower portion of the storage portion and formed so that a lower portion of the open storage portion is opened as it is;
A first conductive portion that is housed on the upper side of the internal space in the housing portion, has a property of repelling the magnet, and is formed of a conductive material having a property of being easily scraped;
Is housed in the lower side of the internal space in front KiOsamu paid unit has a property of repelling the magnet, and was formed of a conductive material having a easy scraping properties, and a second conductive portion,
A first elastic member formed of a conductive material, which connects the first conductive portion and the second conductive portion, and includes the first conductive portion and the second conductive portion. The first conductive part is joined to the first connection object from the opened upper part, and the second conductive part is joined from the opened lower part to the first conductive part. A first elastic member to be joined to two connection objects;
The first magnet and the second magnet are coupled, the first magnet and the second magnet are urged in the length direction of the storage portion, and the length direction of the conductive connection device A second elastic member that makes the length of the variable,
A first magnetic body portion provided at an upper end portion of the storage portion and formed of a magnetic body, the first magnetic body portion adsorbing the first magnet;
A second magnetic body portion provided at a lower end portion of the storage portion and formed of a magnetic body, to which the second magnet is attracted;
A conductive connecting device comprising:   The conductive connection device according to claim 1, wherein the storage portion has a cylindrical shape.   The conductive connection device according to claim 2, wherein the first magnet and the second magnet have a cylindrical shape. It said first elastic member and the second elastic member, respectively, electrically conductive connection device according to any one of claims 1 to 3 is formed by a coiled spring, characterized in that. The housing portion includes a conductive connection device according to any one of claims 1 to 4 is formed of a non-conductive material, characterized in that. The first conductive portion and the second conductive portion is formed by graphite, it conductive connection device according to any one of claims 1 to 5, characterized in.

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