JP2017033845A - Terminal connection structure and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress adhesion of impurities, such as metal powder, to a power supply contact spring.SOLUTION: A terminal connection structure includes a first connection 1 generating magnetic force, and a second connection 2 being sucked to the first connection 1. The first connection 1 has a connect part (first connector) composed of a conductive material having a nonmagnetic material or a weak magnetic material including a contact 12b facing the second connection 2, and a magnet 15 generating a magnetic field around the contact 12b, from the side opposite to the side of the connect part (first connector) provided with the contact 12b. The second connection 2 has a connect part (second connector) 22 composed of the magnetic material and conductive material and coming into contact with the contact 12b.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a terminal connection structure for connecting terminals using the attractive force of a magnet.

  2. Description of the Related Art Conventionally, in order to supply electric power to an electrical product, a terminal connection structure that connects a plug provided on a power cord and a terminal provided on the electrical product with a magnetic attractive force is known.

  For example, Patent Document 1 discloses a power supply connection device having such a terminal connection structure. In the power supply connecting device, an electric product (body) is provided with two electrode pins arranged at intervals and an adsorption plate arranged between the electrode pins. On the other hand, in the power connection device, a magnet plug provided in a power cord is provided with a power contact spring that contacts the electrode pin, a permanent magnet, and a magnetic plate that causes the magnetic force of the permanent magnet to act on the outside. With this configuration, the magnetic plate attracts the attracting plate by the magnetic force of the permanent magnet, so that the electrode pin contacts the contact of the power contact spring while pressing the power contact spring and maintaining the contact pressure.

  In the structure in which the two electrode pins are arranged apart as described above, depending on the state in which the magnetic plate attracts the suction plate, the orientation of the magnet plug with respect to the body may be inclined from the normal state, which may cause poor contact. There is. Such inclination tends to increase as the distance between the electrode pins increases. Therefore, in the power supply connecting device, in order to eliminate the above inconvenience, the contact failure is improved by contacting the power contact spring with the electrode pin while maintaining the contact pressure.

Japanese Utility Model Publication No. 1-73777 (published May 18, 1989)

  However, in the above prior art, since the power contact spring is arranged near the permanent magnet, when the power contact spring is magnetized by the permanent magnet and becomes magnetic, impurities such as metal powder may cause the power contact spring or the contact portion. There is a problem that a short circuit or a connection failure occurs due to adhesion. In particular, such a problem is likely to occur in an environment where metal powder such as a metal processing factory is likely to be scattered.

  In order to solve the above-described problems, the terminal connection structure according to the present invention is electrically connected to the first connection part by adsorbing to the first connection part that generates magnetic force and the first connection part. A terminal connection structure including a second connection portion, wherein the first connection portion includes a contact portion facing the second connection portion, and is made of a nonmagnetic or weakly magnetic conductive material. And a magnet that generates a magnetic field around the contact portion from a side opposite to the side where the contact portion is provided of the first connection body, and the second connection portion is made of a magnetic material and a conductive material. It has the 2nd connection body which contacts the above-mentioned contact part.

  According to said structure, the 2nd connection body of a 2nd connection part is adsorb | sucked by the 1st connection part by the magnetic force of the magnet of a 1st connection part, and contacts with the contact part of the 1st connection body in a 1st connection part To do. Thereby, a 1st connection part and a 2nd connection part are electrically connected. Further, since the magnetic force of the magnet reaches only the outer portion of the contact portion, not the contact portion, the contact force of the contact portion to the second connection body is increased and the magnetic force of the magnet is not applied to the contact portion. Thus, adhesion of impurities such as metal powder to the contact portion due to magnetization is avoided.

  In the terminal connection structure, the first connection portion includes a first housing that houses the first connection body and the magnet, and a first seal that seals between the first connection body and the first housing. And a second casing that seals between the second connector and the second casing. The second casing stores the second connector, and the second connector seals between the second connector and the second casing. You may further have a sealing part.

  According to said structure, since a penetration | invasion of a water | moisture content is blocked | prevented by the sealing part by a 1st sealing part, and the sealing part by a 2nd sealing part, a terminal connection structure is equipped with a drip-proof waterproof function. it can.

  In the terminal connection structure, one of the first connection body and the second connection body is connected to a power supply source, and the other is connected to a power supply destination. Also good.

  According to said structure, electric power can be exchanged between a power supply source and a power supply destination via a terminal connection structure. Thereby, this invention can be applied to the contact structure which connects electronic devices, such as a tablet, and a charger and an extended apparatus, and can also become a power supply, such as a tablet.

  The electronic device according to the present invention includes the first connection portion or the second connection portion in a terminal connection structure.

  According to the above configuration, since the adhesion of impurities such as metal powder to the contact portion due to magnetization is avoided, the terminal connection structure of the present invention is applied to an electronic device used in an environment where such impurities are scattered. Can be applied.

  The present invention has an effect of preventing short circuit and poor connection by avoiding adhesion of impurities such as metal powder to the contact portion due to magnetization.

It is sectional drawing of the state which the 1st connection part in the terminal connection structure which concerns on Embodiment 1 of this invention, and the 2nd connection part left | separated. It is a top view of the said 1st connection part. It is sectional drawing of the state which the said 1st connection part and the 2nd connection part connected. It is a figure which concerns on one structure of Embodiment 2 of this invention, Comprising: (a) is a perspective view which shows a charger, (b) is a perspective view which shows the state which set the tablet to the charger shown to (a). It is. It is a figure which concerns on the other structure of Embodiment 2 of this invention, Comprising: It is a perspective view which shows the state which sets a tablet to a charger.

Embodiment 1
Hereinafter, it will be as follows if Embodiment 1 of this invention is described based on FIGS. 1-3.

<Schematic configuration of terminal connection structure>
FIG. 1 is a cross-sectional view showing an example of a schematic configuration of a terminal connection structure according to Embodiment 1 of the present invention. FIG. 2 is a plan view illustrating an example of a schematic configuration of the first connection portion.

  FIG. 1 shows a configuration in which two terminal connection structures of the present invention are arranged. Here, FIG. 1 shows a cross section taken along line AA in FIG.

  As shown in FIG. 1, the terminal connection structure includes a first connection portion 1 that generates a magnetic force, and a second connection portion that is attracted to the first connection portion 1 and electrically connected to the first connection portion 1. 2 and can be used, for example, as a part for connecting a portable electronic device and a charger. Although the 1st connection part 1 may be provided in an electronic device and the 2nd connection part 2 may be used for a charger, the 2nd connection part 2 is provided in an electronic device, and the 1st connection part 1 is used for a charger. May be.

  As shown also in FIG. 2, the 1st connection part 1 is the case 11 (1st housing | casing), the connection part 12 (1st connection body), the lead wire 13, and the seal | sticker part 14 (1st sealing part). And a magnet 15.

  The case 11 is a member that houses the connecting portion 12, the lead wire 13, the seal portion 14, and the magnet 15, and resin is used as a material. A connect portion 12, a lead wire 13, a seal portion 14, and a magnet 15 are disposed on the inner surface of the case 11 on the side connected to the second connection portion 2. The case 11 is formed with two connection holes 11a for connecting the connecting portion 12 to the second connecting portion 2 at a predetermined interval. The connection hole 11a is circular, but the shape is not limited to circular.

  The connection part 12 is an electrode member that is in electrical connection with the second connection part 2. The connection part 12 is formed of a conductive material having non-magnetism or weak magnetism. As a material for forming the connection part 12, for example, phosphor bronze is used. Alternatively, the connecting portion 12 may be one in which a conductive film (for example, plating) is formed on the surface of the resin plate.

  The connection part 12 has a main body part 12a, a contact part 12b, and a terminal part 12c. The main body 12 a is formed in a flat plate shape, and is arranged on the inner surface of the case 11 so as to close the connection hole 11 a. The contact portion 12b is an electrode portion that comes into contact with a connection portion 22 of the second connection portion 2 described later, and is provided in a protruding shape so as to protrude toward the connection hole 11a. The contact portion 12b is formed in a hemispherical shape, but the shape is not limited to a hemispherical shape. The terminal portion 12 c is formed so as to be bent with respect to the main body portion 12 a and is connected to the lead wire 13.

  The lead wire 13 becomes a power supply line for transferring power between the connect unit 12 and the power supply source or power supply destination by being connected to the connect unit 12.

  The seal portion 14 is provided for drip-proofing and waterproofing inside the case 11. The seal portion 14 is provided between the surface of the connect portion 12 where the contact portion 12 b is provided and the peripheral portion of the connection hole 11 a on the outer surface of the case 11. It arrange | positions so that it may seal. The seal portion 14 is formed of a sealing material such as a double-sided tape or a bond so as to improve the adhesion between the case 11 and the connection portion 12.

  The magnet 15 is provided to generate a magnetic force with respect to the second connection portion 2. The magnet 15 is disposed on the inner surface of the case 11 in the main body portion 12a of the connect portion 12, that is, the surface opposite to the surface on which the contact portion 12b protrudes. Although the magnet 15 is formed in an annular shape as shown in FIG. 1, it is not limited to this, but although not shown, it may be formed in a shape other than an annular shape, for example, a linear shape, a rectangular shape, a semi-annular shape, or the like. Good. Moreover, the magnet 15 is arrange | positioned so that a magnetic field may be generate | occur | produced around the contact part 12b. The magnet 15 is arranged around the contact portion 12b at a distance from the contact portion 12b, regardless of whether it is formed in an annular shape or not. That is, the magnet 15 is not disposed behind the contact portion 12b and within a certain range surrounding the back.

  The magnet 15 may not be disposed around the entire contact portion 12b as long as it can stably attract a connecting portion 22 described later of the second connecting portion 2. For example, the magnet 15 may be disposed around the contact portion 12b in at least two locations facing the contact portion 12b. Moreover, the magnet 15 may be arrange | positioned in the position which forms a polygonal vertex in the circumference | surroundings of the contact part 12b.

  The second connection part 2 includes a case 21 (second housing), a connection part 22 (second connection body), a lead wire 23, and a seal part 24 (second sealing part).

  The case 21 is a member that accommodates the connecting portion 22, the lead wire 23, and the seal portion 24, and resin is used as a material. A connecting portion 22, a lead wire 23, and a seal portion 24 are disposed on the inner surface of the case 21 on the side connected to the first connecting portion 1. The case 21 is formed with two opening projections 21a at which the connecting portion 22 fits into the connecting hole 11a of the first connecting portion 1 at a predetermined interval. The opening protrusion 21 a is formed in a shape that fits into the connection hole 11 a so as to protrude from the case 21, and has an opening that penetrates the case 21 at the top.

  The connection part 22 is an electrode member that is in electrical connection with the first connection part 1. The connecting portion 22 is formed of a magnetic conductive material. A metal is used as a material for forming the connection portion 22.

  The connecting part 22 has an exposed part 22a and a peripheral part 22b. The exposed portion 22a is formed in a flat plate shape, and the surface thereof is disposed so as to close the opening of the opening convex portion 21a and to be exposed from the case 21. The peripheral portion 22b is formed around the exposed portion 22a so as to be bent with respect to the exposed portion 22a, and is formed in a shape that follows the shape of the portion extending from the inner surface of the opening convex portion 21a to the inner surface of the flat portion of the case 21. Yes. Further, a part of the peripheral portion 22 b is connected to the lead wire 23.

  The lead wire 23 becomes a power supply line for transferring power between the connect unit 22 and the power supply source or power supply destination by being connected to the connect unit 22.

  The seal part 24 is provided for drip-proofing and waterproofing inside the case 21, and seals between the flat part of the peripheral part 22b in the connection part 22 and the flat part of the case 21 facing the flat part. Are arranged to be. The seal portion 24 is formed of a sealing material such as a double-sided tape or a bond so as to improve the adhesion between the case 21 and the connection portion 22.

<Connection between the first connection part 1 and the second connection part 2>
FIG. 3 is a cross-sectional view showing an example of a schematic configuration in a state where the first connection portion and the second connection portion are connected.

  The connection between the first connection portion 1 and the second connection portion 2 configured as described above is performed as follows.

  When the opening convex portion 21 a of the second connection portion 2 is brought close to the connection hole 11 a of the case 11 of the first connection portion 1, the connection portion 22 is attracted by the magnetic force of the magnet 15. Thereby, as shown in FIG. 3, the opening convex portion 21 a of the case 21 is fitted into the connection hole 11 a of the case 11. In this state, the contact portion 12b of the connect portion 12 and the exposed portion 22a of the connect portion 22 are in contact. As described above, when the connecting portion 12 and the connecting portion 22 are brought into contact and conducted, electric power can be exchanged between the first connecting portion 1 and the second connecting portion 2.

  Further, since the magnet 15 is not arranged behind the contact portion 12b, the magnetic force of the magnet 15 does not act on the contact portion 12b but acts on the periphery of the contact portion 12b. As a result, it is possible to prevent impurities such as metal powder that cause a short circuit or poor connection from adsorbing to the contact portion 12b. Moreover, the impurities adsorbed by the magnetic force around the contact portion 12b in the connection portion 12 can be easily removed by wiping.

  Further, unlike the conventional terminal connection structure, since it is not necessary to use a spring to secure the contact pressure, the configuration is simplified. Thereby, the cost of the electronic device which mounts a terminal connection structure is reduced. Moreover, since there is no space for enclosing the spring, the terminal connection structure of the present invention is compact and the design is improved.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIGS. In addition, in this embodiment, about the member which has a function equivalent to the member in Embodiment 1, the same name is provided and the description is abbreviate | omitted.

  First, the first configuration of the present embodiment will be described. 4A and 4B are diagrams according to Embodiment 2 of the present invention, in which FIG. 4A is a perspective view showing a charger, and FIG. 4B is a perspective view showing a state where a tablet is set in the charger shown in FIG. FIG.

  The charger 100 is a device for charging the tablet 110 (electronic device) shown in (b) of FIG. 4. As shown in (a) of FIG. 4, the charger 100 and the first connection unit 1 is provided.

  The main body 101 has an L shape, and includes a support portion 101a and an upright portion 101b that stands upright from one end of the support portion 101a perpendicularly to the support portion 101a. The side that forms the same surface as the support portion 101a in the upright portion 101b is the front surface. Moreover, the main-body part 101 incorporates the charging circuit which is not shown in figure. A hole 101c having a rectangular opening is provided on the upper end surface of the upright portion 101b.

  The first connection portion 1 is a flat plate portion disposed on the front surface of the main body portion 101, and two oval connection holes 11a are disposed in the vicinity of the lower end at intervals. A contact portion 12b is provided at the center of each connection hole 11a.

  As shown in FIG. 4B, the second connection portion 2 including the two exposed portions 22 a is provided on the back side of the tablet 110. The exposed portion 22a has an oval shape and is arranged at the same interval as the arrangement interval of the two connection holes 11a. In a state where the tablet 110 is set in the charger 100, a protrusion (not shown) provided on one side of the tablet 110 is fitted into the hole 101 c of the main body 101, so that the tablet 110 is attached to the charger 100. Retained. In this state, the exposed portion 22 a of the tablet 110 is fitted into the two connection holes 11 a of the charger 100, thereby contacting the contact portion 12 b.

  Thereby, when the second connection part 2 of the tablet 110 is connected to the first connection part 1 of the charger 100, the tablet 110 passes from the first connection part 1 of the charger 100 via the second connection part 2 of the tablet 110. Power can be supplied to the tablet and not only can it be charged, it can also supply power to the tablet. Moreover, since the 2nd connection part 2 is connected to the 1st connection part 1 by adsorption | suction by magnetic force even after electric power supply, removal is easy and operability is high compared with the connection by a connector.

  Next, the second configuration of this embodiment will be described. FIG. 5 is a perspective view showing a state in which the tablet is set in the charger.

  The charger 200 is a device for charging the tablet 210 (electronic device), and includes a main body portion 201 and a first connection portion 1.

  The main body 201 includes a support part 201a and an upright part 201b that stands upright from the upper end surface of the support part 201a perpendicularly to the support part 201a. In the vicinity of the front surface of the support portion 201, a groove 201c is provided which is formed to both side ends along the front surface. The groove 201c is formed in a straight line so that the tablet 210 is disposed. Further, the upright portion 201b rises so as to be continuous from the groove 201c at the substantially central portion of the upper end surface of the support portion 201a.

  The 1st connection part 1 is arrange | positioned in the intermediate position of the both ends of the groove | channel 201c. Two connection holes 11a are formed at a predetermined interval on the upper end surface of the case 11 in the first connection portion 1, and a contact portion 12b is provided at the center of each connection hole 11a. The connection hole 11a is formed in a shape and size that fits into an opening convex portion 21a (not shown in FIG. 5) of the second connection portion 2 provided on the side portion of the tablet 210.

  In a state where the tablet 210 is set in the charger 200 as shown by a two-dot chain line in FIG. 5, the side portion of the tablet 210 is disposed in the groove 201c, and the back surface of the tablet 210 is supported by the upright portion 201b. Further, the second connection portion 2 of the tablet 210 is connected to the first connection portion 1 of the charger 200. Thereby, electric power is supplied from the first connection unit 1 of the charger 200 to the tablet 210 via the second connection unit 2 of the tablet 210. Moreover, since the 2nd connection part 2 is connected to the 1st connection part 1 by adsorption | suction by magnetic force even after electric power supply, removal is easy and operability is high compared with the connection by a connector.

  Since the tablets 110 and 210 of the present embodiment include the second connection part 2 in the terminal connection structure of the first embodiment, adhesion of impurities such as metal powder to the contact part 12b due to magnetization is avoided. That is, the terminal connection structure of the present invention can be applied to an electronic device used in an environment where impurities are scattered.

  In the present embodiment, the first connection unit 1 (connect unit 12) is connected to the chargers 100 and 200, and the second connection unit (connect unit 22) is connected to the power supply destination of the tablets 110 and 210. However, the present invention is not limited to this. In other words, any one of the connect unit 12 and the connect unit 22 may be connected to the chargers 100 and 200 (power supply source) and the other connected to the power supply destination.

  In the present embodiment, the tablets 110 and 210 are described as examples of the electronic device. However, the electronic device is not limited to the tablets 110 and 210. Moreover, although this embodiment demonstrated the example which used the terminal connection structure of Embodiment 1 for electric power supply, not only this but using the said terminal connection structure for transmission / reception of data other than electric power supply etc. Is also possible.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 1st connection part 2 2nd connection part 11 Case (1st housing | casing)
11a connecting hole 12 connecting part (first connecting body)
12a body portion 12b contact portion 12c terminal portion 13 lead wire 14 seal portion (first sealing portion)
15 magnet 21 case (second housing)
21a Opening convex part 22 Connect part (2nd connection body)
22a Exposed portion 22b Peripheral portion 23 Lead wire 24 Seal portion (second sealing portion)
110 tablets (electronic devices)
210 Tablet (electronic equipment)

Claims (4)

A terminal connection structure comprising a first connection part that generates magnetic force, and a second connection part that is attracted to the first connection part and electrically connected to the first connection part,
The first connection part is
A first connection body made of a conductive material having nonmagnetic or weak magnetism, including a contact portion facing the second connection portion;
A magnet that generates a magnetic field around the contact portion from the side opposite to the side where the contact portion of the first connection body is provided;
The second connection part is
A terminal connection structure comprising a second connection body made of a magnetic material and a conductive material and in contact with the contact portion. The first connection part is
A first housing for housing the first connection body and the magnet;
A first sealing portion that seals between the first connection body and the first housing;
The second connection part is
A second housing for housing the second connection body;
The terminal connection structure according to claim 1, further comprising a second sealing portion that seals between the second connection body and the second housing.   3. The terminal connection structure according to claim 1, wherein one of the first connection body and the second connection body is connected to a power supply source, and the other is connected to a power supply destination.   An electronic apparatus comprising the first connection portion or the second connection portion in the terminal connection structure according to any one of claims 1 to 3.

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