JP2010119273A - Charging cradle for mobile equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate a bad contact by moving an output terminal pin in the axial direction while rotating it smoothly. <P>SOLUTION: In a charging cradle, output terminal pins 3 to be brought into contact with connection terminals 32 of mobile equipment 30 are connected to a terminal holder 4 so that they can make a reciprocating motion and are pressed against the connection terminals 32 by elastic materials 5. Each of the output terminal pins 3 is such that a metal plate 6 to be brought into contact with the connection terminal 32 is embedded in a cylindrical plastic cover 7, with a contact portion 6A projected from the top of the plastic cover 7. The terminal holder 4 includes connection guide portions 14 for moving the plastic cover 7 in the axial direction, and a guide pin 8 is provided in one of opposing portions between the connection guide portion 14 and the plastic cover 7 and a rotation guide 13 for guiding the guide pin 8 is provided in the other opposing portion. In the charging cradle, the output terminal pins 3 are pushed in by the connection terminals 32 of the mobile equipment 30 mounted in a mounting portion 2, and the guide pins 8 are moved along the rotation guides 13 to roll the contact portions 6A of the metal plates 6 to bring them into contact with the connection terminals 32 of the mobile equipment 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a charging stand for charging a built-in secondary battery by mounting a portable device containing a rechargeable battery.

  The charging stand includes positive and negative output terminals that are in contact with connection terminals of a mobile device to be mounted. In order to make an electrical connection to the connection terminal so that the output terminal does not cause poor contact, a connector that is connected to the connection terminal while rotating the output terminal has been developed. (See Patent Document 1)

In the connector of Patent Document 1, the output terminal pin 93 shown in FIG. 1 is inserted into the case 91 so that it can reciprocate in the axial direction with a predetermined stroke and does not come off. The output terminal pin 93 is configured to be elastically pushed by a coil spring 94 provided between the case 91 and the case 91. Further, a rotation guide 95 is provided on the outer periphery of the output terminal pin 93, and a guide pin 96 provided on the inner surface of the case 91 is guided to the rotation guide 95. The output terminal pin 93 of the connector 90 rotates when it is pushed in contact with the connection terminal 99. This is because the guide pin 96 is guided to the rotation guide 95 and the rotation guide 95 is pushed in while being moved along the guide pin 96. The output terminal pin 93 can reduce contact failure by contacting the connection terminal 99 while rotating.
Japanese Patent Laid-Open No. 11-307161

  The connector 90 shown in FIG. 1 has a drawback that the manufacturing cost of the output terminal pin 93 increases because the output terminal pin 93 is manufactured by processing a metal rod into a special shape. Further, since the rotation guide 95 is provided on the output terminal pin 93 of the metal rod, and the guide pin 96 is provided on the case 91 so as to slide on the rotation guide 95, the output terminal pin 93 is smoothly moved in the axial direction. It is difficult. This is because the sliding resistance between the rotation guide 95 and the guide pin 96 provided on the output terminal pin 93 of the metal rod is increased. Further, since the output terminal pin is connected to the metal case, the entire structure becomes a conductive portion, so that the exposed area of the conductive portion is large and the user is likely to contact the conductive portion.

  Since the charging base requires positive and negative output terminals that are electrically connected to the connection terminals of the portable device, a large short current flows when the conductive portion of the output terminal is exposed and short-circuited. In addition, when the voltage at the positive and negative output terminals is high, there is a possibility of electric shock when the conductive part is touched with wet hands. In addition, even if the voltage is low, there is a risk of low temperature burns if contacted for a long time.

The present invention has been developed for the purpose of eliminating these drawbacks. An important object of the present invention is to provide a charging base for a portable device that can reduce the manufacturing cost, move the output terminal pin in the axial direction while smoothly rotating, eliminate contact failure, and connect to the connection terminal. is there.
Another important object of the present invention is to provide a charging base for a portable device that can reduce an exposed area of a contact portion connected to a connection terminal of the portable device and prevent an electric shock or a short circuit.

Means for Solving the Problems and Effects of the Invention

  The mobile device charging base of the present invention includes a case 1 having a mounting portion 2 to be mounted so that a portable device 30 containing a battery 31 can be attached and detached, and a mobile phone provided in the case 1 and set in the mounting portion 2. An output terminal pin 3 that is in contact with the connection terminal 32 of the device 30, and a terminal holder 4 that is connected so that the output terminal pin 3 can reciprocate toward and away from the connection terminal 32 of the portable device 30. And an elastic body 5 that elastically presses the output terminal pin 3 toward the connection terminal 32 of the portable device 30. The output terminal pin 3 includes a metal plate 6 that contacts the connection terminal 32 of the portable device 30 and a cylindrical plastic cover 7 in which the metal plate 6 is embedded. The metal plate 6 is embedded in the plastic cover 7 by projecting the contact portion 6 </ b> A from the tip of the plastic cover 7. The terminal holder 4 has a connecting guide part 14 formed by connecting a cylindrical plastic cover 7 so as to be movable in the axial direction, and a guide is provided on one side of the connecting guide part 14 and the plastic cover 7 facing each other. A rotation guide 13 is provided for rolling the plastic cover 7 that guides the guide pin 8 and moves along the connecting guide portion 14 on the other side. In the charging stand, the output terminal pin 3 is pushed in by the connection terminal 32 of the portable device 30 mounted on the mounting portion 2 of the case 1, the guide pin 8 moves along the rotation guide 13, and the contact of the metal plate 6. The part 6 </ b> A is rolled to contact the connection terminal 32 of the portable device 30.

  The above charging stand is characterized in that the manufacturing cost can be reduced and the output terminal pin can be moved in the axial direction while smoothly rotating to eliminate the contact failure and connect to the connection terminal. The manufacturing cost can be reduced because the output terminal pin is embedded in a plastic cover in which a metal plate is formed in a cylindrical shape. Since the output terminal pin having this structure can be molded into a predetermined outer shape by molding a plastic cover, it can be mass-produced at a lower cost compared to a metal processed output terminal pin. The reason why the output terminal pin can be moved in the axial direction while smoothly rotating is that the plastic cover of the output terminal pin can be moved in the axial direction by sliding the plastic cover of the output terminal pin on the terminal holder. That is, the sliding portion between the output terminal pin and the terminal holder is not made in metal contact, but is made in plastic contact, so that sliding resistance can be reduced by sliding plastic and plastic. In addition to eliminating contact failure and connecting to the connection terminal, in addition to being able to smoothly rotate the output terminal pin to contact the connection terminal, the contact portion with the connection terminal is made into a plate shape, so that the metal plate This is because the foreign substance such as dust adhering to the surface of the connection terminal can be scraped and contacted.

  Moreover, the above charging stand also realizes the feature that the exposed area of the contact portion connected to the connection terminal of the portable device can be reduced to prevent electric shock or short circuit. Instead of using metal as a whole for the output terminal pin, the exposed area of the conductive part can be significantly reduced by embedding a metal plate in the plastic cover and exposing the contact part from the tip of the plastic cover. Because.

The charging stand of the portable device of the present invention includes an insulating cover 16 in which the terminal holder 4 reciprocates in the reciprocating direction of the output terminal pin 3, and a push spring that elastically protrudes the insulating cover 16 toward the portable device 30. 17 can be provided. The insulating cover 16 is provided with a guide hole 16a that guides the output terminal pin 3 so as to be able to reciprocate. When the portable device 30 is not attached, the insulating cover 16 protrudes beyond the output terminal pin 3 and outputs the output. The terminal pin 3 can be accommodated in the guide hole 16a.
The charging base described above is characterized in that since the contact portion of the output terminal pin is housed inside the insulating cover, the conductive portion is not exposed to the outside, and electric shock and short-circuiting of the output terminal pin can be prevented more reliably.

The charging stand of the portable device of the present invention can use the elastic body 5 that presses the output terminal pin 3 as a metal wire coil spring 5A, and the coil spring 5A is in contact with the metal plate 6 to be used as a lead wire.
In the above charging stand, an elastic body that elastically pushes the output terminal pin is used together with the lead wire, so that a structure for supplying power to the output terminal pin can be simplified.

The charging base of the portable device of the present invention is a connecting base between the positive and negative power terminals 32A and 32B of the mobile device 30 as a charging base of the mobile device 30 having the connecting terminals 32 composed of positive and negative power terminals 32A and signal terminals 32B. The output terminal pin 3 which contacts 32 can be provided.
Since the above charging stand has an output terminal pin connected to the signal terminal of the portable device, a connection signal indicating a connection state can be transmitted from the portable device to the charging stand. For this reason, the charging stand can detect the connection signal and output a voltage for charging the portable device to the output terminal pin. This structure can realize a structure in which the charging stand does not output charging power when no connection signal is input from the portable device. For this reason, when the user does not set the portable device, the user does not get an electric shock by touching the output terminal pin, and the metal is not brought into contact with the output terminal pin and short-circuited.

The charging base of the portable device of the present invention includes a semiconductor switching element 25 connected to the output terminal pin 3 connected to the connection terminal 32 of the power supply terminal 32 </ b> A of the portable device 30. The output terminal pin 3 connected to the signal terminal 32B of the portable device 30 is connected, the semiconductor switching element 25 is turned on by the ON signal input from the output terminal pin 3 connected to the signal terminal 32B, and the output terminal Positive and negative power can be output from the pin 3.
Since this charging stand sets the portable device and switches it on to the semiconductor switching element, charging power is not output to the output terminal pin when the portable device is not set, and it is possible to reliably prevent electric shock and short circuit. In addition, since the semiconductor switching element is switched on by inputting a signal to the input of the semiconductor switching element, the semiconductor switching element can be switched on and the charging power can be output with a simple circuit configuration.

In the portable device charging stand according to the present invention, the semiconductor switching element 25 is turned on by a signal input from the output terminal pin 3 that contacts the signal terminal 32B connected to the power supply terminal 32A of the portable device 30. Or it can be either a FET.
The above charging stand can output charging power to the output terminal pin by switching on a transistor or FET in a state where a portable device is set with a very simple circuit configuration. For this reason, there is a feature that mass production can be performed at low cost while reliably preventing an electric shock or short-circuit without setting a portable device on the charging stand. In particular, there is a feature that it is possible to reliably prevent electric shock and short circuit of the output terminal pin with an extremely simple structure without providing a switch for detecting the mounting of the portable device and outputting the charging power of the output terminal pin.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment shown below exemplifies a charging base of a portable device for embodying the technical idea of the present invention, and the present invention does not specify the charging base as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The charging stand shown in FIGS. 2 to 6 is attached so that the portable device 30 containing a rechargeable battery is removable, and charges the built-in battery. The mobile device 30 is a mobile phone. However, the present invention does not specify a portable device that charges a built-in battery. For example, MD or CD playback or recording / playback machines, digital portable devices, game machines, etc. Mobile device.

  2 to 4 show the charging stand of the first embodiment, and FIGS. 5 and 6 show the charging stand of the second embodiment. These charging stands are in contact with a case 1 having a mounting portion 2 for mounting the mobile device 30 so that the mobile device 30 can be attached and detached, and a connection terminal 32 of the mobile device 30 provided in the case 1 and set in the mounting portion 2. The output terminal pin 3, the terminal holder 4 connected so that the output terminal pin 3 can be moved back and forth in the direction of approaching and leaving the connection terminal 32 of the mobile device 30, and the output terminal pin 3. And an elastic body 5 that is elastically pressed toward the connection terminal 32. In the illustrated charging stand, the output terminal pin 3, the terminal holder 4, and the elastic body 5 are fixed to the case 1 as a connector 10.

  The case 1 in the figure is provided with ridges 20 along the outer periphery, and the portable device 30 can be set detachably with the inside of the ridges 20 as the mounting portion 2. The charging stand in FIG. 2 is provided with a connector 10 at the bottom of the mounting portion 2 provided in the case 1 and an output terminal pin 3 so as to protrude upward from the bottom. As shown in FIGS. 3 and 4, this charging stand fixes a circuit board 9 to a connector 10, fixes the connector 10 to the upper case 1A, and connects the upper case 1A to which the connector 10 is fixed to the lower case 1B. is doing. In the upper case 1 </ b> A, an opening window 21 for projecting the connector 10 is provided on the bottom surface 2 </ b> A of the mounting portion 2, and the connector 10 is disposed in the opening window 21. The connector 10 has a fixing portion 11 protruding from the side surface, and the fixing portion 11 is fixed to the upper case 1A via a set screw 12.

  The charging stand in FIG. 5 has one side of the ridges 20 provided around the mounting portion 2, the width of the ridges 20 </ b> A located rearward in the figure, and a storage portion inside the ridges 20 </ b> A. (Not shown) is provided, and the connector 10 is disposed in the storage portion. The connector 10 is provided with the output terminal pin 3 so as to protrude in a horizontal direction from the ridge 20 toward the mounting portion 2. As shown in FIG. 6, the charging stand fixes the circuit board 9 to the connector 10, fixes the connector 10 to the inner wall 22 of the ridge 20 </ b> A of the upper case 1 </ b> B, and the upper case 1 </ b> A to which the connector 10 is fixed. It is connected to the lower case 1B. In the upper case 1 </ b> A, an opening window 21 for projecting the connector 10 is provided on the inner wall 22 of the ridge 20 </ b> A, and the connector 10 is disposed in the opening window 21. The connector 10 fixes a fixing portion 11 protruding from a side surface to an inner wall 22 via a set screw 12.

  A sectional view of the connector 10 is shown in FIG. 7, and a perspective view of the output terminal pin 3 is shown in FIG. The output terminal pins 3 in these figures are composed of a metal plate 6 that contacts the connection terminal 32 of the portable device 30 and a cylindrical plastic cover 7 in which the metal plate 6 is embedded. The output terminal pin 3 is embedded by insert-molding a metal plate 6 in a process of forming a plastic cover 7 which is an insulating material. The metal plate 6 is embedded in the plastic cover 7 so that the contact portion 6A protrudes from the tip of the plastic cover 7. As shown in FIG. 9, the metal plate 6 is manufactured by punching the metal plate 40 to form a plurality of continuous shapes. The output terminal pin 3 is manufactured by insert molding on the plastic cover 7 in a state where the plurality of metal plates 6 are continuous, and can be efficiently manufactured by cutting after being molded.

  The metal plate 6 in FIG. 7 has a width narrower than the outer diameter of the cylindrical portion 7A of the plastic cover 7, and both side edges thereof are buried without being exposed on the surface of the plastic cover 7, and only the tip portion thereof is contacted 6A. Expose as. 6 A of contact parts are exposed so that it may protrude from the front-end | tip of the plastic cover 7. FIG. The plate-like contact portion 6A rotates with the output terminal pin 3 being pushed in, and is rubbed against the connection terminal 32 as shown in FIG. Further, the metal plate 6 of FIGS. 7 and 9 is provided with protruding pieces 6B on both sides of the lower part. The protruding piece 6B is exposed from the plastic cover 7 and electrically connected to a coil spring 5A that is an elastic body 5 that elastically pushes up the output terminal pin 3.

  As shown in FIG. 8, the plastic cover 7 is formed in a cylindrical shape, and is provided with a retaining collar portion 7B at the lower portion. As shown in FIG. 7, the retaining collar 7 </ b> B is locked to the terminal holder 4 and holds the output terminal pin 3 so as not to be detached. Further, the plastic cover 7 is provided with guide pins 8 protruding on both sides of the lower part. As shown in FIGS. 11 to 13, the guide pin 8 moves along the rotation guide 13 provided in the terminal holder 4 to rotate the output terminal pin 3 that reciprocates. The output terminal pin 3 of FIG. 8 is provided with a guide pin 8 that protrudes from the retaining collar 7B of the plastic cover 7.

  The terminal holder 4 is made of plastic, and is provided with a connecting guide portion 14 that connects the cylindrical plastic cover 7 so as to be movable in the axial direction. The terminal holder 4 shown in FIGS. 7 and 14 guides the output terminal pin 3 so as to be able to reciprocate through the connecting guide portion 14 as a prismatic vertical hole. In the illustrated connector 10, the three output terminal pins 3 are provided in the terminal holder 4, so that the terminal holder 4 is provided with three sets of vertical holes. The vertical hole of the connection guide part 14 narrows the opening part 14a of the upper end, locks the retaining collar part 7B here, and guides it so that it can reciprocate so as not to come out of the output terminal pin 3. .

  Further, as shown in FIGS. 11 to 14, the terminal holder 4 has a longitudinal hole in the connection guide portion 14 that guides the guide pin 8 of the output terminal pin 3 to the side surface 15, along the connection guide portion 14. A rotation guide 13 for rolling the moving output terminal pin 3 is provided. The rotation guide 13 is inclined in the left-right direction upward and downward so that the output terminal pin 3 moves and rolls in the axial direction. Further, each coupling guide portion 14 is provided with a rotation guide 13 on the side surface facing each other so that the guide pins 8 projecting on both sides of the output terminal pin 3 can be guided, and the inclination direction of the rotation guide 13 facing each other is set. The direction is reversed. In other words, the rotation guide 13 provided on the opposite side surface 15 is inclined in a point-symmetric shape with the output terminal pin 3 as the center of the object. The terminal holder 4 provided with the rotation guide 13 having this shape on the opposite side surface 15 moves up and down while smoothly rolling the guide pins 8 protruding on both sides of the output terminal pin 3 in a well-balanced manner. The rotation guide 13 shown in the figure serves as a slit to guide the guide pin 8 here. The rotation guide can also guide the guide pin here as a groove.

  In the connector 10 described above, the output terminal pin 3 is provided with the guide pin 8, and the terminal holder 4 is provided with the rotation guide 13. However, on the surface facing the plastic cover of the output terminal pin and the connection guide portion of the terminal holder. The terminal holder may be provided with a guide pin and the plastic cover may be provided with a rotation guide, and the output terminal pin may be moved in the axial direction for rolling.

  The elastic body 5 that elastically presses the output terminal pin 3 is a coil spring 5 </ b> A, is inserted into the longitudinal hole of the connection guide portion 14, and is elastically compressed between the output terminal pin 3 and the circuit board 9. is doing. The coil spring 5 </ b> A is a conductive metal spring and electrically connects the output terminal pin 3 to the circuit board 9. The coil spring 5A of the elastic body 5 is in contact with the metal plate 6 of the output terminal pin 3 and is in contact with the conductive portion provided on the circuit board 9 to electrically connect the conductive portion of the circuit board 9 to the output terminal pin 3. is doing.

  Further, the connector 10 of FIGS. 7, 11 to 13 and 15 includes an insulating cover 16 that can reciprocate in the direction in which the output terminal pin 3 reciprocates, and the insulating cover 16 elastically toward the portable device 30. The terminal holder 4 is provided with a pressing spring 17 that protrudes from the terminal holder 4.

  The insulating cover 16 is provided with a guide hole 16a for guiding the output terminal pin 3 so as to reciprocate. The insulating cover 16 in the figure is formed of plastic in a box shape that opens downward, and a guide hole 16a for projecting the output terminal pin 3 is provided in the top plate 16A. The terminal holder 4 is provided with a pair of side wall portions 18, and the insulating cover 16 is arranged inside the side wall portions 18 so as to reciprocate up and down. As shown in FIG. 15, the insulating cover 16 is provided with an elastic deformation piece 16 </ b> B by dividing the lower portion of the side surface in the vertical direction by a slit 16 </ b> C, and a locking hook protruding outward at the lower end of the elastic deformation piece 16 </ b> B. 16b is provided. On the other hand, the side wall 18 of the terminal holder 4 is provided with a stepped recess 18A on the inner side, and the upper end of the stepped recess 18A serves as a locking portion 18a for locking the locking hook 16b. The locking hook 16b is locked to the locking portion 18a, and the insulating cover 16 is connected to the terminal holder 4 so as not to come off.

  The pressing spring 17 is a coil spring. As shown in FIGS. 7, 11 to 14, and 15, the top plate 16 </ b> A of the insulating cover 16 is pressed from the lower surface so that the insulating cover 16 is directed toward the output terminal pin 3. Make it protrude. The terminal holder 4 is integrally formed with a connecting rod 19 so as to protrude upward in order to place the pressing spring 17 of the coil spring at a fixed position. The spring 17 of the coil spring inserted into the connecting rod 19 has the lower end in contact with the terminal holder 4 and the upper end in contact with the inner surface of the top plate 16A of the insulating cover 16 to elastically push up the insulating cover 16.

  In the state where the portable device 30 is not set, the connector 10 is in a state where the insulating cover 16 is pushed up by the push spring 17 and the output terminal pin 3 is not exposed as shown in FIGS. 11 and 15. Therefore, the user does not get an electric shock by touching the contact portion 6A of the output terminal pin 3, and the metal is not brought into contact and short-circuited. When the insulating cover 16 is pushed by the portable device 30, the insulating cover 16 is pushed down as shown in FIG. In this state, the output terminal pin 3 protrudes from the insulating cover 16 and the contact portion 6 </ b> A comes into contact with the connection terminal 32 of the portable device 30. In FIG. 12, for the sake of clarity, the output terminal pin 3 is greatly protruded from the insulating cover 16, but in the state where the portable device 30 is set in the mounting portion 2, the output terminal pin 3 is thus in the insulating cover 16. It does not protrude from. This is because, in the state where the portable device 30 is set in the mounting portion 2, as shown in FIG. 7, the insulating cover 16 is in a position in contact with the case surface of the portable device 30 and the output terminal pin 3 is in contact with the connection terminal 32.

  The three sets of output terminal pins 3 provided on the connector 10 are connected to the charging power source 29 via the coil spring 5A of the elastic body 5 that pushes up the output terminal pin 3 and the conductive portion of the circuit board 9. FIG. 16 shows a circuit diagram of the charging stand. This charging stand connects the output terminal pin 3 to a connection terminal 32 including a positive and negative power supply terminal 32 </ b> A and a signal terminal 32 </ b> B provided in the portable device 30, and charges the built-in battery 31 of the portable device 30. Therefore, the connector 10 includes three sets of output terminal pins 3 that are in contact with the positive and negative power supply terminals 32A of the portable device 30 and the connection terminals 32 of the signal terminal 32B. In this embodiment, an example of three sets of output terminal pins 3 will be described. However, if necessary, output terminal pins corresponding to signal terminals may be omitted as two sets of output terminal pins.

  The charging stand in FIG. 16 includes a semiconductor switching element 25 connected to the output terminal pin 3 connected to the connection terminal 32 which is the power terminal 32A on the plus side of the portable device 30. The semiconductor switching element 25 has an output terminal pin 3 connected to the signal terminal 32B of the portable device 30 connected to the input thereof. The semiconductor switching element 25 is switched on by an on signal input from the output terminal pin 3 connected to the signal terminal 32B. The semiconductor switching element 25 in the on state outputs positive and negative power from the output terminal pin 3 and charges the built-in battery 31 of the portable device 30. In the charging stand, the semiconductor switching element 25 is held in an off state in a state where no on signal is input from the portable device 30. Therefore, the output terminal pin 3 does not output charging power when the portable device 30 is not set. Further, the output terminal 3 connected to the signal terminal 32B is connected to the resistor 26 and has a high impedance. For this reason, even if the user touches the contact portion 6A of the output terminal pin 3 without setting the portable device 30, there is no electric shock or short circuit.

  The charging stand of FIG. 16 uses a transistor 25 </ b> A for the semiconductor switching element 25. The transistor 25A is in contact with the output terminal pin 3 whose base is in contact with the signal terminal 32B via the bias resistor 26. The base of the transistor 25A is connected to a circuit for supplying a bias current on the portable device side in a state where the portable device 30 is set. In the portable device 30 shown in the figure, a negative power supply terminal 32A and a signal terminal 32B are connected to form one connection terminal 32, and the two output terminal pins 3 can be brought into contact with the connection terminal 32. . In the connection terminal 32 of the portable device 30 shown in FIG. 17, the plus-side power terminal 32A is a circular conductive portion 35 that can contact one output terminal pin 3, and the minus-side power terminal 32A and the signal terminal 32B are connected. It is exposed from the case 33 of the portable device 30 as an oval conductive portion 36 with which the two output terminal pins 3 can contact. However, the negative power supply terminal and signal terminal do not necessarily need to be connected as one conductive part on the case surface of the mobile device, but are connected inside the mobile device or connected to the protection circuit and controlled by the protection circuit. You can also The connection terminal 32 to which the negative power supply terminal 32A and the signal terminal 32B are connected is in a state in which a bias current flows by connecting the base of the transistor 25A to the ground side in a state where the portable device 30 is set on the charging stand. . Further, the transistor 25A (PNP transistor) has an emitter and a collector connected to the charging power source 29 and the output terminal pin 3, and the charging power source 29 is connected to the output terminal pin 3 in the on state, and the charging power source 29 in the off state. Is disconnected from the output terminal pin 3. When the portable device 30 is set on the charging stand, the base of the transistor 25A is connected to the power terminal 32A on the negative side via the output terminal pin 3 and the signal terminal 32B. In this state, a bias current for turning on the transistor 25A flows through the base of the transistor 25A, the charging power supply 29 is connected to the output terminal pin 3, and the built-in battery 31 of the portable device 30 is charged.

  In the charging stand of FIG. 16, the semiconductor switching element 25 is a transistor 25A, but an FET can be used instead of the transistor. The FET has a low on-resistance and can connect the charging power source to the output terminal pin with low power consumption. The FET connects the gate to the output terminal pin. In a state where the portable device is set, the FET is connected to a power supply circuit that can input a voltage for switching on the gate inside the portable device, and is turned on. Since the FET has a drain and a source connected to the charging power source and the output terminal pin, the charging power source is connected to the output terminal pin in the ON state to charge the built-in battery of the portable device.

It is an expanded sectional view of the conventional connector. It is a perspective view which shows the state which sets a portable apparatus to the charging stand concerning 1st Example of this invention. It is a disassembled perspective view of the charging stand shown in FIG. It is sectional drawing which shows the state which set the portable apparatus to the charging stand shown in FIG. It is a perspective view which shows the state which sets a portable apparatus to the charging stand concerning 2nd Example of this invention. It is a disassembled perspective view of the charging stand shown in FIG. It is a principal part expanded sectional view of the charging stand shown in FIG. It is a perspective view of an output terminal pin. It is a perspective view which shows the manufacturing process of a metal plate. It is a schematic plan view which shows the state which the contact part of an output terminal pin rotates. It is a longitudinal cross-sectional perspective view of a connector. It is a cross-sectional perspective view which shows the state which pushed down the insulating cover of the connector shown in FIG. It is a cross-sectional perspective view which shows the state by which the output terminal pin of the connector shown in FIG. 12 was pushed down. It is a cross-sectional perspective view of a terminal cover. It is a cross-sectional perspective view of a connector. It is a circuit diagram of the charging stand concerning one Example of this invention. It is a perspective view which shows an example of the connecting terminal of a portable apparatus.

Explanation of symbols

1 ... Case 1A ... Upper case
DESCRIPTION OF SYMBOLS 1B ... Lower case 2 ... Mounting part 2A ... Bottom surface 3 ... Output terminal pin 4 ... Terminal holder 5 ... Elastic body 5A ... Coil spring 6 ... Metal plate 6A ... Contact part
6B ... Projection piece 7 ... Plastic cover 7A ... Cylindrical part
7B: Retaining prevention hook part 8 ... Guide pin 9 ... Circuit board 10 ... Connector 11 ... Fixing part 12 ... Set screw 13 ... Rotating guide 14 ... Connection guide part 14a ... Opening part 15 ... Side face 16 ... Insulating cover 16A ... Top plate
16a ... Guide hole
16B ... elastic deformation piece
16b ... Locking hook
16C ... Slit 17 ... Pressing spring 18 ... Side wall 18A ... Locking recess
18a ... Locking part 19 ... Connecting rod 20 ... Convex strip 20A ... Convex strip 21 ... Opening window 22 ... Inner wall 25 ... Switching element 25A ... Transistor 26 ... Resistor 29 ... Charging power source 30 ... Portable device 31 ... Battery 32 ... Connection terminal 32A ... Power supply terminal
32B ... Signal terminal 33 ... Case 34 ... Protection circuit 35 ... Circular conductive part 36 ... Oval conductive part 40 ... Metal plate 90 ... Connector 91 ... Case 93 ... Output terminal pin 94 ... Coil spring 95 ... Rotation guide 96 ... Guide Pin 99 ... connection terminal

Claims (6)

A case (1) having a mounting part (2) to be attached so that a portable device (30) containing a battery (31) can be attached and detached, and provided in this case (1) and set in the mounting part (2) The output terminal pin (3) that is in contact with the connection terminal (32) of the portable device (30), and the output terminal pin (3) approaches and leaves the connection terminal (32) of the portable device (30). A terminal holder (4) coupled so as to reciprocate in the direction, and an elastic body (5) that elastically presses the output terminal pin (3) toward the connection terminal (32) of the portable device (30) And
The output terminal pin (3) includes a metal plate (6) that contacts the connection terminal (32) of the portable device (30), and a cylindrical plastic cover (7) formed by embedding the metal plate (6). The metal plate (6) is embedded in the plastic cover (7) with the contact portion (6A) protruding from the tip of the plastic cover (7),
Further, the terminal holder (4) has a connection guide part (14) formed by connecting a cylindrical plastic cover (7) so as to be movable in the axial direction, and the connection guide part (14) and the plastic The guide pin (8) is guided to one side of the cover (7) and the guide pin (8) is guided to the other side, and the output terminal pin (3) moves along the connecting guide portion (14). There is a rotation guide (13) to roll
The output terminal pin (3) is pushed into the connection terminal (32) of the portable device (30) attached to the attachment part (2) of the case (1), and the guide pin (8) is turned to the rotation guide (13). ), And the contact portion (6A) of the metal plate (6) is rolled to contact the connection terminal (32) of the mobile device (30).   The terminal holder (4) has an insulating cover (16) that reciprocates in the reciprocating direction of the output terminal pin (3), and a push that elastically protrudes the insulating cover (16) toward the portable device (30). This insulation cover (16) has a guide hole (16a) that guides the output terminal pin (3) so that it can reciprocate, and the portable device (30) is not attached. The charging of the portable device according to claim 1, wherein the insulating cover (16) protrudes from the output terminal pin (3) so that the output terminal pin (3) is accommodated in the guide hole (16a). Stand.   The elastic body (5) that presses the output terminal pin (3) is a coil spring (5A) of a metal wire, and the coil spring (5A) is in contact with the metal plate (6) and used together with the lead wire. Item 2. A charging stand for a portable device according to Item 1.   A charging base for a portable device (30) having a connection terminal (32) comprising a positive and negative power supply terminal (32A) and a signal terminal (32B), the positive and negative power supply terminals (32A) and signal terminals of the portable device (30) The charging stand of the portable device (30) according to claim 1, further comprising an output terminal pin (3) that contacts the connection terminal (32) of the (32B).   It comprises a semiconductor switching element (25) connected to the output terminal pin (3) connected to the connection terminal (32) of the power supply terminal (32A) of the portable device (30), and this semiconductor switching element (25 ) Is connected to the output terminal pin (3) connected to the signal terminal (32B) of the portable device (30), and from the output terminal pin (3) connected to the signal terminal (32B). The charging stand for a portable device according to claim 4, wherein the semiconductor switching element (25) is turned on by an input ON signal to output positive and negative power from the output terminal pin (3).   The semiconductor switching element (25) is switched on by a signal input from an output terminal pin (3) that contacts a signal terminal (32B) connected to a power supply terminal (32A) of the portable device (30). 6. The portable device charging base according to claim 5, wherein the charging base is either a transistor (25A) or a FET.

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