Patent Application
20130037517
1. Field of the Invention
The present invention relates to a switch device and a connector.
2. Description of the Related Art
Generally, an electrical or electronic device is driven by supplying electric power from a power source of the like. When supplying the electric power from the power source or the like, the electric power is supplied to the electrical or electronic device through connectors. The connectors for connecting the electrical or electronic device and the power source may be a combination of a jack type connector and a plug type connector configured to be fitted in the jack type connector, as described in Patent Documents 1, Patent Documents 2 and the like.
Recently, as a countermeasure for global warming or the like, supplying of electric power of a direct current with a high voltage has been considered even for the power transmission in a local area. By using the electric power of a direct current with a high voltage, the power loss at the conversion of the voltage, the power transmission or the like can be reduced and it is not necessary to use a heavy cable. Especially, as an information device such as a server or the like consumes a large amount of electric power, supplying of the electric power of a direct current with a high voltage is desirable for the information device.
However, if the voltage of the electric power supplied to the electrical or electronic device is high, the electric power may cause some effects on a human body, or some effects on an operation of electronic components.
When such electric power of a direct current with a high voltage is used for an information device such as a server or the like, it is necessary to provide connectors which are different from connectors used for a general-purpose commercial power source of an alternating current. Further, as the connectors may be handled by a human when installing or maintaining the device, it is necessary to care for the effects on the human body or the like as well.
Further, if the electric power supplied from the power source exceeds 100 V or is direct current with a high voltage, when a switch device is incorporated in a connector, a current commercially available switch cannot be used as it is. For example, when the electric power supplied from the power source is direct current with 400 V, it may not be safe to use a switch device, which is currently used for electric power of an alternating current with 100 V as safety and reliability are not ensured.
[Patent Document 1] Japanese Laid-open Patent Publication No. H05-82208
[Patent Document 2] Japanese Laid-open Patent Publication No. 2003-31301
According to an embodiment, there is provided a switch device including a first contacting portion including a first fixed contacting portion, a first movable contacting portion and a first break contacting portion, the first movable contacting portion being configured to selectively contact one of the first fixed contacting portion and the first break contacting portion; a second contacting portion including a second fixed contacting portion, a second movable contacting portion and a second break contacting portion, the second movable contacting portion being configured to selectively contact one of the second fixed contacting portion and the second break contacting portion, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; and a first magnet and a second magnet configured to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.
According to another embodiment, there is provided a connector for electrically connecting the power source and the electronic device, including the above switch device; and a first fitting terminal and a second fitting terminal to be fitted with terminals of another connector.
Note that also arbitrary combinations of the above-described constituents, and any exchanges of expressions in the present invention, made among method, device, system, and so forth, are valid as embodiments of the present invention.
Other objects, features and advantages of the present invention will become more apparent from the following detailed description when read in conjunction with the accompanying drawings.
The invention will be described herein with reference to illustrative embodiments. Those skilled in the art will recognize that many alternative embodiments can be accomplished using the teachings of the present invention and that the invention is not limited to the embodiments illustrated for explanatory purposes.
It is to be noted that, in the explanation of the drawings, the same components are given the same reference numerals, and explanations are not repeated.
A switch device and a connector of embodiments are configured to correspond to a high voltage. However, in the following embodiments, the expression “high voltage” does not mean a “direct current of over 750 V” which is defined by the electrical equipment technical standards or a “direct current of higher than or equal to 1500 V” which is an international standard defined by the International Electrotechnical Commission (IEC). Instead, the expression “high voltage” means a voltage that exceeds a safety extra low voltage (a direct current of less than 60 V). In other words, the “high voltage” in the following embodiments means a voltage higher than or equal to 60 V.
The structure of a connector of a first embodiment is explained.
The connector of the embodiment is a jack connector 10 shown in
First, the structure of the plug connector 300 is explained with reference to
The plug connector 300 includes a cover 310, three plug terminals 321, 322 and 323, and a cable 330. Further, the cover 310 of the plug connector 300 is provided with a protection portion 311 and an opening 312 (see
The cover 310 is made of an insulator or the like, for example. The plug terminals 321, 322 and 323 are provided at one side of the cover 310. The plug terminal 321 is a GND terminal and formed to be longer than the plug terminals 322 and 323. The plug terminals 322 and 323 (an example of terminals of the other connector) are configured to be electrically connected to terminals of the jack connector 10 so that electric power is supplied, as will be explained later.
The protection portion 311 is provided at the one side of the cover 310 to surround a part of the plug terminals 321, 322 and 323. The cable 330 is connected to the cover 310 at the other side of the cover 310. In this embodiment, the plug connector 300 is configured to be electrically connected to an electric device via the cable 330. The opening 312 is provided to fix the plug connector 300 with the jack connector 10 when the plug connector 300 is connected to the jack connector 10.
Next, the structure of the jack connector 10 of the embodiment is explained with reference to
The jack connector 10 includes a housing 50 and an operation unit 40. Further, the jack connector 10 is provided with jack openings 21, 22 and 23 to which the plug terminals 321, 322 and 323 of the plug connector 300 are to be inserted, respectively, and a groove portion 31 to which the protection portion 311 of the plug connector 300 is to be inserted. The housing 50 covers the entirety of the jack connector 10. The jack openings 22 and 23 are an example of a first fitting terminal and a second fitting terminal. In this embodiment, as will be explained later, the jack connector 10 is configured to be electrically connected to a power source.
The operation unit 40 is provided to operate a switch device, which will be explained later, for controlling whether to supply electric power from the power source when the plug connector 300 and jack connector 10 are physically connected. The operation unit 40 is slidable between an “ON” position and an “OFF” position. By sliding the operation unit 40, the switch device is operated and whether to supply the electric power from the power source via the jack connector 10 to the plug connector 300 is controlled.
The internal structure of the jack connector 10 of the embodiment is explained in detail with reference to
The jack connector 10 further includes a link portion 41, a contact slide portion 42, and a switch device 100.
The switch device 100 includes a button 160 that functions to switch on and off the electrical connection between the jack connector 10 and the plug connector 300, as will be explained later.
The operation unit 40 includes a sliding body portion 40b and an operational protruding portion 40a which is provided at an upper portion of the sliding body portion 40b. The operational protruding portion 40a protrudes outside the housing 50 from an opening provided at a top of the housing 50.
The jack connector 10 is configured such that when the operational protruding portion 40a of the operation unit 40 is moved in a direction shown by an arrow “A” (which will be referred to as a sliding direction), the switch device 100 is also operated to switch on and off the electrical connection between the jack connector 10 and the plug connector 300 (in other words, the electrical connection between the electric device and the power source).
The sliding body portion 40b is housed in the housing 50 and is connected to the link portion 41.
The contact slide portion 42 is provided with a slide opening 42a and a protruding contacting portion (not shown in the drawings). The protruding contacting portion is formed to extend in a direction (downward direction in
The slide opening 42a is formed to extend in a direction substantially parallel to the sliding direction.
The link portion 41 is configured to be moved in a direction substantially parallel to the sliding direction. The link portion 41 is formed to have an “L” shape where one end of the “L” shape structure is inserted in the slide opening 42a of the contact slide portion 42 to be slidable within the slide opening 42a in the direction substantially perpendicular to the sliding direction.
The plug connector 300 and the jack connector 10 may be configured such that a hook (not shown in the drawings) of the jack connector 10 is fitted to the opening 312 of the plug connector 300 (see
The structure of the switch device 100 is now explained. The switch device 100 of the jack connector 10 functions to control supplying of the electric power from the power source. The switch device 100 may be referred to as a “power switch” as well.
Referring to
As will be explained later, the switch device 100 of the embodiment includes two of the contacting portions 201 each including the fixed portion 110 (a first fixed portion 110a or a second fixed portion 110b) and the movable portion 120 (a first movable portion 120a or a second movable portion 120b), and the permanent magnets 180 (a first permanent magnet 180a and a second permanent magnet 180b), although only one of each of them is shown in
The base block 130 includes a base block body portion 131, a fixed portion support portion 132 and an insulating wall 133. The insulating wall 133 may be made of fire-retardant resin or the like, for example.
The fixed portions 110 are made entirely of an electrical conductive material such as a metal or the like. Each of the fixed portions 110 includes a fixed spring 112 and a fixed contacting portion 111 provided at one end of the fixed spring 112. The fixed spring 112 may be formed by bending a metal plate or the like made of copper, an alloy including copper or the like, for example. The fixed contacting portion 111 may be made of an alloy including silver and copper, for example. Another end of the fixed spring 112 is fixed at the base block body portion 131 of the base block 130 and the middle part of the fixed spring 112 is supported by the fixed portion support portion 132 of the base block 130.
Similar to the fixed portions 110, the movable portions 120 are made entirely of an electrical conductive material such as a metal or the like. Each of the fixed portions 110 includes a movable plate portion 122, a movable spring 123 and a movable contacting portion 121. The movable contacting portion 121 is provided at one end of the movable plate portion 122 to correspond to the fixed contacting portion 111 of the fixed portions 110 to be contacted. One end of the movable spring 123 is connected to another end of the movable plate portion 122. The movable plate portion 122 and the movable spring 123 may be formed by bending a metal plate or the like made of copper, an alloy including copper or the like, for example. The movable contacting portion 121 may be made of an alloy including silver and copper, for example. Another end of the movable spring 123 is fixed in the base block body portion 131 of the base block 130. As the movable spring 123 is formed by bending the metal plate or the like, for example, the movable spring 123 has flexibility. Thus, the movable contacting portion 121 provided at the one end of the movable plate portion 122 is capable of being moved in an upward and downward direction.
The insulating wall 133 of the base block 130 is provided between a portion where the other end of the fixed spring 112 is fixed and a portion where the other end of the movable spring 123 is fixed. Thus, the movable spring 123 is bent to pass over the insulating wall 133 of the base block 130.
The switch device housing 150 is provided with a switch device opening 151 formed at its upper surface.
The card member 140 includes an upper contacting portion 141, a lower contacting portion 142, a rotating shaft 143, a protruding portion 144, a body portion 145, and a contacting portion 144a provided at upper portion of the protruding portion 144.
The card member 140, the base block 130 and the switch device housing 150 may be made of an insulating material such as resin or the like, respectively.
The upper contacting portion 141 of the card member 140 is provided to contact one surface (upper surface in
Under this state, when the card member 140 is rotated around the rotating shaft 143, the force is applied to the movable plate portion 122 via the upper contacting portion 141 or the lower contacting portion 142 of the card member 140 so that the movable contacting portion 121 is moved downward or upward, respectively.
The fixed portions 110 and the movable portions 120 are provided within an area surrounded by the base block 130 and the switch device housing 150. The protruding portion 144 of the card member 140 is provided to protrude outside of the switch device housing 150 from the switch device opening 151 of the switch device housing 150. The body portion 145, the upper contacting portion 141 and the lower contacting portion 142 of the card member 140 are provided within an area surrounded by the base block 130 and the switch device housing 150.
The button 160 is provided outside the switch device housing 150 to push the protruding portion 144 of the card member 140 for rotating the card member 140 around the rotating shaft 143. The contacting portion 144a of the card member 140 contacts an inner wall portion 161 of the button 160. The contacting portion 144a of the card member 140 is provided to slide on a surface of the inner wall portion 161. Thus, in order to reduce frictional resistance, the inner wall portion 161 may be provided with a surface layer made of fluorocarbon resin or the like at the surface.
The spring 170 is provided outside the switch device housing 150. One end of the spring 170 is connected to the switch device housing 150 and the other end of the spring 170 is connected to the button 160.
The switch device 100 is configured to supply the electric power to the plug connector 300 when the fixed contacting portions 111 of the fixed portions 110 and the movable contacting portions 121 of the movable portions 120 are in contact, respectively, and terminate supplying of the electric power to the plug connector 300 when the fixed contacting portions 111 of the fixed portions 110 and the movable contacting portions 121 of the movable portions 120 are not in contact, respectively.
It is assumed that the plug connector 300 and the jack connector 10 are physically connected at this time. Then, when the operation unit 40 is operated to be positioned at the “ON” position, the sliding body portion 40b is moved in the sliding direction shown by the arrow “A” (see
With this operation, the contacting portion 141 of the card member 140 is pushed by the inner wall portion 161 of the button 160 so that the card member 140 is rotated around the rotating shaft 143.
Then, the force is applied to the movable plate portions 122 of the movable portions 120 through the upper contacting portion 141 of the card member 140 in a downward direction so that the movable contacting portions 121 and the fixed contacting portions 111 of the fixed portions 110 make contact, respectively.
Although not shown in the drawings, the contact slide portion 42 is configured to maintain this status while the operation unit 40 is positioned at the “ON” position. Thus, the movable contacting portions 121 and the fixed contacting portions 111 are in contact while the operation unit 40 is positioned at the “ON” position so that the electric power is supplied from the power source to the electric device.
Further, when the operation unit 40 is operated to be positioned at the “OFF” position, the contact slide portion 42 is released from pushing the button 160 so that the force applied to the button 160 is released. At this time, the button 160 is moved back in an upper direction by the spring force of the spring 170. With this operation, the card member 140 is rotated around the rotating shaft 143 in the upper direction so that the force in the upward direction is applied to the movable plate portions 122 of the movable portions 120 through the lower contacting portion 142 of the card member 140. Specifically, when the button 160 is moved back in the upper direction, a step portion 162 provided at an inside wall of the button 160 engages with a protruding portion (not shown in the drawings) provided at the card member 140 so that the card member 140 is moved with the button 160 to be rotated around the rotating shaft 143.
Then, the movable contacting portions 121 are moved upward to be apart from the corresponding fixed contacting portions ill to terminate the supply of the electric power from the power source.
At this time, a case may occur where electric arcs are generated between the movable contacting portions 121 and the corresponding fixed contacting portions 111. Thus, according to the switch device 100 of the embodiment, the permanent magnets 180 are provided near contacting areas of the movable contacting portions 121 and the corresponding fixed contacting portions 111 to blow off the electric arcs by magnetic fields. The permanent magnets 180 are provided to generate the magnetic fields in a direction substantially perpendicular to a direction in which the electric arcs are generated.
Alternatively, electro-magnets may be used instead of the permanent magnets 180.
Further, in the switch device 100, the spring force of the spring 170, which is provided outside the switch device housing 150, is used to terminate supplying of the electric power from the power source, instead of using the resilience of the springs of the movable portions 120 such as the movable springs 123 or the like. Thus, even when the movable springs 123 of the movable portions 120 do not have the resilience, supplying of the power source can be terminated.
Here, there is a possibility that heat is generated inside the switch device housing 150 so that the fixed portions 110 and the movable portions 120 may be affected by the heat. However, as the spring 170 is provided outside the switch device housing 150, the spring 170 is not affected by the heat generated inside the switch device housing 150.
Therefore, even in a case when a part of the movable springs 123 or the like is melted by the heat generated inside the switch device housing 150, and the movable springs 123 or the like begin to not function as springs, supplying of the power source can be terminated by the spring force of the spring 170 without using the resilience of the movable springs 123 or the like.
It means that supplying of the electric power from the power source can be surely terminated.
Further, in the switch device 100, the insulating wall 133 is provided at the base block 130 between the portion where the other end of the fixed spring 112 is fixed and the portion where the other end of the movable spring 123 is fixed. With this structure, even when a part of the fixed portions 110 and the movable portions 120 is melted by the heat, the melted portion of the fixed portions 110 and melted portion of the movable portions 120 are separated by the insulating wall 133. Thus, a condition in which the melted portion of the fixed portions 110 and the melted portion of the movable portions 120 make contact so that the current of the power source continues to flow (short of the fixed portion 110 and the corresponding movable portion 120), can be prevented from occurring.
The switch device 100 of the embodiment is explained in detail.
As shown in
The first contacting portion 201a includes a first fixed portion 110a, a first movable portion 120a and a first break portion 210a. The second contacting portion 201b includes a second fixed portion 110b, a second movable portion 120b and a second break portion 210b. Here, the first fixed portion 110a and the second fixed portion 110b correspond to the fixed portions 110. The first movable portion 120a and the movable portion 120b correspond to the movable portions 120.
In the switch device 100 of the embodiment, the electric power from the power source can be supplied to the electronic device when the first fixed portion 110a and the first movable portion 120a are in contact, as well as when the second fixed portion 110b and the second movable portion 120b are in contact.
The first fixed portion 110a includes a first fixed contacting portion 111a and a fixed spring 112a which is electrically connected to the fixed portion external terminal 113a. Similarly, the second fixed portion 110b includes a second fixed contacting portion 111b, a fixed spring 112b which is electrically connected to the fixed portion external terminal 113b. The first fixed contacting portion 111a and the second fixed contacting portion 111b correspond to the fixed contacting portions 111, and the fixed spring 112a and the fixed spring 112b correspond to the fixed springs 112.
The first movable portion 120a includes a first movable contacting portion 121a, a movable plate portion 122a and a movable spring 123a which is electrically connected to the movable portion external terminal 124a. Similarly, the second movable portion 120b includes a second movable contacting portion 121b, a movable plate portion 122b and a movable spring 123b which is electrically connected to the movable portion external terminal 124b. The first movable contacting portion 121a and the second movable contacting portion 121b correspond to the movable contacting portions 121, the movable plate portion 122a and the movable plate portion 122b correspond to the movable plate portions 122, and the movable spring 123a and the movable spring 123b correspond to the movable springs 123.
The first contacting portion 201a and the second the second contacting portion 201b of the embodiment have a transfer structure, respectively.
The first break portion 210a includes a first break contacting portion 211a and a break portion spring 212a which is electrically connected to the break portion external terminal 213a. The first break portion 210a is fixed to the base block 130 by the break portion spring 212a. The first break contacting portion 211a is provided to face the first fixed contacting portion 111a while interposing the first movable contacting portion 121a therebetween. The first movable contacting portion 121a is configured to selectively contact one of the first fixed contacting portion 111a and the first break contacting portion 211a to be electrically connected.
Similarly, the second break portion 210b includes a second break contacting portion 211b, a break portion spring 212b which is electrically connected to the break portion external terminal 213b. The second break portion 210b is fixed to the base block 130 by the break portion spring 212b. The second break contacting portion 211b is provided to face the second fixed contacting portion 111b while interposing the second movable contacting portion 121b therebetween. The second movable contacting portion 121b is configured to selectively contact one of the second fixed contacting portion 111b and the second break contacting portion 211b to be electrically connected.
The first break portion 210a and the second break portion 210b may be made of the material similar to those of the first fixed portion 110a and the second fixed portion 110b, or the first movable portion 120a and the second movable portion 120b.
As shown in
Further, the fixed portion external terminal 113a is electrically connected to one of the terminals of the electronic device 191 to which the electric power is to be supplied, and the fixed portion external terminal 113b is electrically connected to the other of the terminals of the electronic device 191. As described above, in this embodiment, the switch device 100 of the jack connector 10 is electrically connected to the electric device 191 via the plug connector 300 although not shown in
The first permanent magnet 180a is provided to correspond to the first fixed portion 110a and the first movable portion 120a. The first permanent magnet 180a has a function to blow off an electric arc generated between the first fixed contacting portion 111a and the first movable contacting portion 121a by a magnetic field.
Similarly, the second permanent magnet 180b is provided to correspond to the second fixed portion 110b and the second movable portion 120b. The second permanent magnet 180b has a function to blow off an electric arc generated between the second fixed contacting portion 111b and the second movable contacting portion 121b by a magnetic field.
In this embodiment, the first permanent magnet 180a and the second permanent magnet 180b are provided such that the directions to blow off the electric arcs generated between the first fixed contacting portion 111a and the first movable contacting portion 121a, and between the second fixed contacting portion 111b and the second movable contacting portion 121b become opposite from each other. Specifically, the first permanent magnet 180a may be provided such that the electric arc generated between the first fixed contacting portion 111a and the first movable contacting portion 121a is blown off in an outward direction (a direction opposite to the second contacting portion 201b). Similarly, the second permanent magnet 181b may be provided such that the electric arc generated between the second fixed contacting portion 111b and the second movable contacting portion 121b is blown off in an outward direction (a direction opposite to the first contacting portion 201a).
Thus, in this embodiment, the first permanent magnet 180a and the second permanent magnet 180b are provided to generate magnetic fields in the same directions as the current flows between the first fixed contacting portion 111a and the first movable contacting portion 121a, and between the second fixed contacting portion 111b and the second movable contacting portion 121b, respectively, in different directions. Specifically, the first permanent magnet 180a is placed such that the South Pole faces the side where the first fixed contacting portion 111a and the first movable contacting portion 121a are provided. Similarly, the second permanent magnet 180b is placed such that the South Pole faces the side where the second fixed contacting portion 111b and the second movable contacting portion 121b are provided.
With this structure, the magnetic field by the first permanent magnet 180a is generated between the first fixed contacting portion 111a and the first movable contacting portion 121a, and the magnetic field by the second permanent magnet 180b is generated between the second fixed contacting portion 111b and the second movable contacting portion 121b. Alternatively, instead of the first permanent magnet 180a and the second permanent magnet 180b, electro-magnets may be used.
Under a state where the power source 190 and the electronic device 191 are electrically connected, in other words, the first fixed contacting portion 111a and the first movable contacting portion 121a are electrically connected, as well as the second fixed contacting portion 111b and the second movable contacting portion 121b are electrically connected, a current is supplied from the cathode of the power source 190 to the movable portion external terminal 124a. Then, the current flows through the first movable portion 120a, the first fixed portion 110a via the first movable contacting portion 121a and the first fixed contacting portion 111a and the fixed portion external terminal 113a in this order to be supplied to the electronic device 191. Then, the current further flows from the electronic device 191 through the fixed portion external terminal 113b, the second fixed portion 110b, the second movable portion 120b via the second fixed contacting portion 111b and the second movable contacting portion 121b, and the movable portion external terminal 124b in this order to reach the anode of the power source 190.
Under a state where the power source 190 and the electronic device 191 are not electrically connected, the electric power from the power source 190 is not supplied to the electronic device 191. Under this state, the first movable contacting portion 121a contacts the first break contacting portion 211a, and the second movable contacting portion 121b contacts the second break contacting portion 211b, in this embodiment.
The switch device 100 of the embodiment further includes a first end portion 220a and a second end portion 220b which are connected to the break portion external terminal 213a and the break portion external terminal 213b, respectively.
The first end portion 220a includes a capacitor 221a and a resistor 222a which are connected in series. Here, one electrode of the capacitor 221a is connected to the break portion external terminal 213a and another electrode of the capacitor 221a is connected to one end of the resistor 222a, and another end of the resistor 222a is grounded.
Similarly, the second end portion 220b includes a capacitor 221b and a resistor 222b which are connected in series. Here, one electrode of the capacitor 221b is connected to the break portion external terminal 213b and another electrode of the capacitor 221b is connected to one end of the resistor 222b, and another end of the resistor 222b is grounded.
By providing the first end portion 220a and the second end portion 220b, the energy of the high frequency signal can be consumed so that the generation of reflected waves from the ends can be prevented when the power source 190 and the electronic device 191 are not electrically connected, for example. In other words, even in a case involving Power Line Communication, in which a currently available electric power line is used as a communication line, is used for the switch device 100 and the jack connector 10 of the embodiment, reflection of the high frequency signal can be prevented when the electronic device 191 is not connected to the power source 190.
In this embodiment, the break portion external terminals 213a and 213b are connected to each other via a light emitting diode and a resistor instead of providing the first end portion 220a and the second end portion 220b as explained in the first embodiment.
The switch device 100 of the embodiment includes a first light emitting diode 231 and a first resistor 232 which are connected in series between the break portion external terminal 213a and the break portion external terminal 213b. Specifically, one end of the first resistor 232 is connected to the break portion external terminal 213a, another end of the first resistor 232 is connected to an anode terminal of the first light emitting diode 231, and a cathode terminal of the first light emitting diode 231 is connected to the break portion external terminal 213b.
With this structure, similar to the first embodiment, when the first movable contacting portion 121a is in contact with the first fixed contacting portion 111a as well as when the second movable contacting portion 121b is in contact with the second fixed contacting portion 111b, the electric power from the power source 190 is supplied to the electronic device 191. Under this state, the first light emitting diode 231 is not emitting.
On the other hand, when the first movable contacting portion 121a is in contact with the first break contacting portion 211a as well as when the second movable contacting portion 121b is in contact with the second break contacting portion 211b, the current flows through the first light emitting diode 231 so that the first light emitting diode 231 is emitting.
With this structure, a user or an operator can know that the electrical connection between the power source 190 and the electronic device 191 is terminated; in other words, the electric power from the power source 190 is not being supplied to the electronic device 191.
The first resistor 232 is provided to adjust the current to flow through the first light emitting diode 231 to be a predetermined current value. Thus, the first resistor 232 is designed to have a predetermined resistor value capable of adjusting the current to be the predetermined current value with respect to the voltage of the electric power from the power source 190.
The switch device 100 shown in
Specifically, one end of the second resistor 242 is connected to the fixed portion external terminal 113a, another end of the second resistor 242 is connected to an anode terminal of the second light emitting diode 241, and a cathode terminal of the second light emitting diode 241 is connected to the fixed portion external terminal 113b.
With this structure, when the electric power from the power source 190 is supplied to the electronic device 191, the first light emitting diode 231 is not emitting but the second light emitting diode 241 is emitting.
On the other hand, when the electric power from the power source 190 is not supplied to the electronic device 191, the second light emitting diode 241 is not emitting (extinct), but the first light emitting diode 231 is emitting.
With this structure, a user or an operator can know whether the electric power is supplied from the power source 190 to the electronic device 191 based on which of the first light emitting diode 231 and the second light emitting diode 241 is emitting.
Further, by having the first light emitting diode 231 and the second light emitting diode 241 emit different colors, in other words, by changing the wavelengths of the lights emitted by the first light emitting diode 231 and the second light emitting diode 241, whether the power source 190 and the electronic device 191 are connected can be clearly known. For example, the first light emitting diode 231 may be configured to emit red light while the second light emitting diode 241 may be configured to emit blue light or the like, for example.
Further, the first light emitting diode 231 and the second light emitting diode 241 may be integrally formed as shown in
Other components not specifically explained in the second embodiment are similar to those of the first embodiment. Further, the switch device 100 of the second embodiment may be incorporated into the jack connector 10 explained in the first embodiment.
According to the above embodiments, a switch device, which can correspond to a power source of a voltage higher than that of the current commercial power source or a direct current power source, with high performance and reliability can be provided. Further, a connector, which can correspond to a power source of a voltage higher than that of the current commercial power source or a direct current power source and safely supply the electric power from the power source, with a high performance can be provided.
Although in the above embodiments, the jack connector 10 is explained as an example of a connector including the switch device 100, the switch device 10 may be incorporated in a plug connector.
Further, the plug connector 300 may be configured to be electrically connected to the power source side and the jack connector may be configured to be electrically connected to the electronic device side.
Further, the first movable portion 120a and the second movable portion 120b may be configured to be electrically connected to the electronic device side, and the first fixed portion 110a and the second fixed portion 110b may be configured to be electrically connected to the power source side.
Although a preferred embodiment of the connector or the switch device has been specifically illustrated and described, it is to be understood that minor modifications may be made therein without departing from the sprit and scope of the invention as defined by the claims.
In the above embodiments, the magnet unit is configured to include the first permanent magnet 180a and the second permanent magnet 180b. In other words, the first permanent magnet 180a and the second permanent magnet 180b are provided respectively for the first contacting portion 201a and the second contacting portion 201b. However, the first permanent magnet 180a and the second permanent magnet 180b may be formed to be a common magnet for the first contacting portion 201a and the second contacting portion 201b. It means that the magnet unit may include a single magnet commonly provided for the first contacting portion 201a and the second contacting portion 201b.
The present invention is not limited to the specifically disclosed embodiments, and variations and modifications may be made without departing from the scope of the present invention.
The present application is based on Japanese Priority Application No. 2011-176405 filed on Aug. 11, 2011, the entire contents of which are hereby incorporated herein by reference.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2011-176405 | Aug 2011 | JP | national |
