JP2015179637A - mobile terminal charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a mobile terminal charging system, capable of suppressing the occurrence of a spark between connection terminals.SOLUTION: The mobile terminal charging system includes: a charger connected to a power supply; a plurality of charger-side connection terminals disposed on a charger; a mobile terminal including a battery; and a plurality of terminal-side connection terminals disposed on the mobile terminal. The mobile terminal charging system further includes: resistance creation parts (flap-side protrusion 22c, terminal-side protrusion 41d) for creating, when the mobile terminal is relatively moved to the charger in an opposite direction to an insertion direction, resistance to relative movement, during a period after a terminal-side detection terminal and a charger-side detection terminal become a detection terminal non-connection state until a terminal-side power terminal and a charger-side power terminal become a power terminal non-connection state.

Description

  The present invention relates to a portable terminal charging system.

  A portable terminal such as a tablet terminal is equipped with a battery, and a charger is used to charge the battery. In a portable terminal charging system that charges a battery with a charger, by placing the portable terminal on the charger, a terminal-side connection terminal provided on the portable terminal and a charger-side connection terminal provided on the charger are The battery is electrically connected and charging of the battery is started.

  Usually, the charger side connection terminal is exposed to the outside when the mobile terminal is not charged. The location where the charger is installed depends on the usage environment of the portable terminal, and includes a manufacturing factory, a storage warehouse, a cooking shop of a food supply store, and the like. Therefore, depending on the location where the charger is installed, foreign matter such as dust and oil may be scattered in the atmosphere and may adhere to the exposed charger side connection terminal. Even if a foreign object adheres to the charger side connection terminal, the insertion / extraction of the portable terminal with respect to the charger, so-called insertion / extraction, is repeated. Therefore, the foreign matter adhering to the charger side connection terminal is pressed against the surface of the charger side connection terminal or the terminal side connection terminal, and the contact between the connection terminals may be hindered, that is, the connection terminals may be insulated.

  Therefore, conventionally, there has been proposed a technique for suppressing the terminal-side connection terminal from being exposed to the outside by covering the terminal-side connection terminal when the mobile terminal is not charged by the charger. (Patent Documents 1 and 2). According to this, since it is suppressed that a foreign material adheres to the charger side connection terminal, when the foreign material attached to the connection terminal is peeled off, it is possible to suppress a spark generated due to a gap formed in the connection terminal. .

JP-A-10-255855 JP 2004-215330 A

  By the way, the spark which generate | occur | produces between connection terminals has the possibility of damaging a charging failure of a battery and a connection terminal. The cause of the occurrence of sparks may occur in the case where the connection terminals are separated from each other by pulling out the mobile terminal with respect to the normal charger in addition to the adhesion of foreign matter to the connection terminals described above, thereby suppressing the occurrence of sparks between the connection terminals. It is requested to do.

  This invention is made in view of the above, Comprising: It aims at proposing the portable terminal charge system which can suppress generation | occurrence | production of the spark between connection terminals.

  In order to solve the above-described problems and achieve the object, a charger connected to a power source, a plurality of charger side connection terminals provided in the charger, a portable terminal having a battery, and the portable terminal A plurality of terminal-side connection terminals provided, and the terminal-side connection terminal and the charger-side connection terminal are electrically connected to each other so that the battery is charged by the power from the power source. In the charging system, the terminal-side connection terminal includes a terminal-side detection terminal and a terminal-side power supply terminal, and the charger-side connection terminal maintains a connection state of the terminal-side connection terminal. The mobile terminal is formed so as to be able to advance and retreat following the connection / disconnection of the portable terminal with respect to the charger, connected to the charger-side detection terminal connected to the terminal-side detection terminal, the terminal-side power supply terminal, and an external force is applied. In the state that is not A charger-side power supply terminal that is longer than the charger-side detection terminal, and the charger is provided with the charger-side connection terminal on the bottom surface and the terminal-side connection terminal. When a part of the mobile terminal including the terminal surface is inserted, the terminal housing part to which the terminal side connection terminal and the charger side connection terminal are electrically connected, and the insertion direction of the mobile terminal A flap that rotates between a closed position that closes the terminal accommodating portion and a retracted position where the portable terminal can be inserted into the terminal accommodating portion; and an urging member that urges the flap toward the closed position; When it is detected that the terminal-side detection terminal and the charger-side detection terminal are in a detection terminal connection state, and the charger is connected to the portable terminal based on the detection terminal connection state, the terminal side Power terminal and A switch circuit that supplies power from the power source to the battery via a charger-side power terminal, and the charging is performed while the portable terminal is detected to be connected to the charger. A power supply circuit that supplies power from the charger to the battery via a charger side power supply terminal and the terminal side power supply terminal, and the portable terminal is placed in a direction opposite to the insertion direction with respect to the charger. By the relative movement, after the terminal side detection terminal and the charger side detection terminal are in the detection terminal disconnected state, the terminal side power supply terminal and the charger side power supply terminal are in the power supply terminal disconnected state. In addition, a resistance creating unit that creates resistance against the relative movement is further provided.

  The portable terminal charging system according to the present invention has an effect of suppressing the occurrence of sparks between connection terminals.

FIG. 1 is a perspective view of a charger (retreat position) of the mobile terminal charging system according to the embodiment. FIG. 2 is a side view of the charger (retreat position). FIG. 3 is a perspective view of a charger (closed position) of the mobile terminal charging system according to the embodiment. FIG. 4 is a side view of the charger (closed position). FIG. 5 is an enlarged view of a main part showing the flap side protrusion. FIG. 6 is a diagram illustrating a charger side connection terminal. FIG. 7 is a perspective view of the mobile terminal of the mobile terminal charging system according to the embodiment. FIG. 8 is an enlarged view of a main part showing the terminal side protrusion. FIG. 9 is a diagram illustrating terminal-side connection terminals. FIG. 10 is a block diagram of the mobile terminal charging system according to the embodiment. FIG. 11 is an explanatory diagram of the connection terminals in the accommodated state. FIG. 12 is an explanatory diagram of the resistance creating unit in the accommodated state. FIG. 13 is an explanatory diagram of the connection terminals in the detection terminal non-connected state. FIG. 14 is an explanatory diagram of the resistance creating unit in the detection terminal non-connected state. FIG. 15 is a relationship diagram between ON / OFF of the power supply circuit and the connection terminal OFF timing when the resistance creating unit is not provided. FIG. 16 is a relationship diagram between ON / OFF of the power supply circuit and the connection terminal OFF timing in the case where the resistance creating unit is provided. FIG. 17 is a diagram illustrating a modification of the resistance creating unit. FIG. 18 is a diagram illustrating a modification of the resistance creating unit.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or that are substantially the same.

Embodiment
FIG. 1 is a perspective view of a charger (retreat position) of the mobile terminal charging system according to the embodiment. FIG. 2 is a side view of the charger (retreat position). FIG. 3 is a perspective view of a charger (closed position) of the mobile terminal charging system according to the embodiment. FIG. 4 is a side view of the charger (closed position). FIG. 5 is an enlarged view of a main part showing the flap side protrusion. FIG. 6 is a diagram illustrating a charger side connection terminal. FIG. 7 is a perspective view of the mobile terminal of the mobile terminal charging system according to the embodiment. FIG. 8 is an enlarged view of a main part showing the terminal side protrusion. FIG. 9 is a diagram illustrating terminal-side connection terminals. FIG. 10 is a block diagram of the mobile terminal charging system according to the embodiment. FIG. 11 is an explanatory diagram of the connection terminals in the accommodated state. FIG. 12 is an explanatory diagram of the resistance creating unit in the accommodated state. FIG. 13 is an explanatory diagram of the connection terminal in the non-contact state of the detection terminal. FIG. 14 is an explanatory diagram of the resistance creating unit in the non-contact state of the detection terminal. Here, FIG. 5 is an enlarged view of part A of FIG. 3, and FIG. 9 is an enlarged view of part B of FIG. 12 and 14 are cross-sectional views of the main part as viewed in the width direction.

  As shown in FIG. 10, the mobile terminal charging system 1 according to the embodiment includes a charger 2 connected to a power source 100, a plurality of charger side connection terminals 3 provided in the charger 2, and a battery 44. The mobile terminal 4 includes a plurality of terminal-side connection terminals 5 provided on the mobile terminal 4. In the portable terminal charging system 1, the battery 44 is charged by the electric power from the power supply 100 when the terminal side connection terminal 5 and the charger side connection terminal 3 are electrically connected, that is, when the connection terminal connection state is established. Is.

  The charger 2 is a device on which the mobile terminal 4 is placed when the mobile terminal 4 is charged. The charger 2 is supplied with power from a power source 100, for example, a commercial power source, via the AC adapter 200. As shown in FIG. 1, the charger 2 includes a charger main body 21, a flap 22, an urging member 23, a charger-side connector 24 provided with a plurality of charger-side connection terminals 3, a switch circuit 25, It is comprised including.

  The charger main body 21 includes a base portion 21a, a front wall portion 21b, a rear wall portion 21c, a bottom surface 21d, a terminal accommodating portion 21e, a positioning portion 21f, and a width direction restricting portion 21g. . The base 21a is provided with a charger side connector 24 and a switch circuit 25 therein. As shown in FIG. 2, the front wall portion 21b and the rear wall portion 21c are formed to extend upward in the vertical direction from both ends in the width direction of the base portion 21a. That is, the charger main body 21 is formed in a U-shape that opens upward when viewed in the width direction. Here, the rear wall portion 21c extends upward from the front wall portion 21b, that is, the distance from the bottom surface 21d is longer than the front wall portion 21b. As shown in FIG. 3, the rear wall portion 21c is formed with a flap housing portion 21h for housing the flap 22 on the side facing the front wall portion 21b. As shown in FIG. 4, the bottom surface 21d is formed between the front wall portion 21b and the rear wall portion 21c. A plurality of charger side connection terminals 3 are provided on the bottom surface 21d. In the present embodiment, a part of the charger-side connector 24, that is, the plurality of charger-side connection terminals 3 are exposed to the terminal accommodating portion 21e at the center in the width direction of the bottom surface 21d. The terminal accommodating part 21e is a part into which a part of the portable terminal 4 to be described later is inserted, and is a space formed by the front wall part 21b, the rear wall part 21c, and the bottom surface 21d. Therefore, when a part of the portable terminal 4 is inserted into the terminal accommodating portion 21e, the plurality of charger side connection terminals 3 face terminal surfaces 41a described later of the portable terminal 4. The positioning part 21f brings the portable terminal 4 into the accommodated state with respect to the charger 2 by contacting the portable terminal 4 partially accommodated in the terminal accommodating part 21e. In other words, the positioning portion 21f maintains a constant vertical distance between the terminal surface 41a and the bottom surface 21d. The positioning portions 21f are formed so as to protrude upward from the bottom surface 21d with the plurality of charger side connection terminals 3 interposed therebetween. The width direction regulation part 21g regulates relative movement in the width direction of the mobile terminal 4 with respect to the charger 2 in the accommodated state. The width direction restricting portion 21g is formed to protrude toward the front wall portion 21b on the bottom surface 21d side of both ends in the width direction of the rear wall portion 21c. Each width direction restricting portion 21g is inserted into each width direction restricting hole 41b (to be described later) of the portable terminal 4 when a part of the portable terminal 4 is accommodated in the terminal accommodating portion 21e, and performs relative movement in the accommodated state. It will be regulated.

  The flap 22 has a closed position that closes the terminal accommodating portion 21e and a retracted position that allows the portable terminal 4 to be inserted into the terminal accommodating portion 21e when viewed in the insertion direction of the portable terminal 4 and in the downward direction of the vertical direction in the present embodiment. Between the two. The flap 22 in the present embodiment is formed in a flat plate shape and is rotatably supported by the charger main body 21. Each of the flaps 22 has a rotating shaft 22a formed on the opposite side of the bottom surface 21d at both ends in the width direction. Each rotation shaft 22a is rotatably supported with respect to support portions (not shown) formed at both ends in the width direction at the upper end in the vertical direction of the rear wall portion 21c. Here, as shown in FIG. 4, the flap 22 has a length from the rotation shaft 22a to the tip 22b so that the tip 22b, which is the lower end in the vertical direction, can come into contact with the front wall 21b. Is set. The closed position in the present embodiment refers to a position where the flap 22 rotates toward the front wall portion 21b until the tip portion 22b comes into contact with the front wall portion 21b. In addition, the retracted position in the present embodiment refers to a position where the flap 22 rotates toward the rear wall 21c until it is accommodated in the rear wall 21c as shown in FIG.

  Further, as shown in FIG. 3, the flap 22 is formed with a flap-side protrusion 22 c that constitutes a part of the resistance creating portion 6 in the embodiment. The flap-side protrusion 22 c is formed on the facing surface 22 d that faces the mobile terminal 4 in the accommodated state of the flap 22. The flap-side protrusions 22c are respectively formed on the tip 22b side of both ends in the width direction of the facing surface 22d. As shown in FIG. 5, the flap-side protrusion 22c in the present embodiment has a semicircular plate shape, and is formed on the most distal end 22b side among the protrusions formed on the facing surface 22d.

  As shown in FIG. 4, the urging member 23 urges the flap 22 toward the closed position. As shown in FIG. 1, the urging member 23 in the present embodiment is provided corresponding to each rotation shaft 22 a of the flap 22, and has a rotational force in a direction in which the flap 22 rotates toward the front wall portion 21 b. For example, a coil spring is provided to each rotating shaft 22a.

  The charger side connector 24 fixes a plurality of charger side connection terminals 3 to the charger 2. As shown in FIG. 6, the charger side connector 24 is provided with a plurality of charger side connection terminals 3 protruding upward from the bottom surface 21d.

  As shown in FIG. 10, the switch circuit 25 switches between energization and non-energization of the power supply 100 and the charger side power supply terminal 3P. The switch circuit 25 includes, for example, an FET (Field Effect Transistor), and has a source terminal 25S, a gate terminal 25G, and a drain terminal 25D. The source terminal 25S is electrically connected to the power supply 100 via the AC adapter 200. The gate terminal 25G is electrically connected to the charger side detection terminal 3D. The drain terminal 25D is electrically connected to the charger side power supply terminal 3P. In the switch circuit 25, the terminal side detection terminal 5D and the charger side detection terminal 3D are electrically connected (detection terminal connection state), and the detection voltage from the power supply circuit 42 of the portable terminal 4 is applied to the gate terminal 25G. Then, the source terminal 25S and the drain terminal 25D are electrically connected (energized state). That is, the switch circuit 25 determines that the charger 2 is connected to the portable terminal 4 based on the detection voltage from the power supply circuit 42 based on the detection terminal connection state. When the terminal-side power supply terminal 5P and the charger-side power supply terminal 3P are electrically connected (power supply terminal connection state), the battery is supplied from the power supply 100 via the terminal-side power supply terminal 5P and the charger-side power supply terminal 3P. Power is supplied to 44. On the other hand, the switch circuit 25 has a detection voltage that is not gated even when the terminal-side detection terminal 5D and the charger-side detection terminal 3D are not electrically connected (detection terminal disconnected state) or the detection terminal connected state. If not applied to the terminal 25G, the source terminal 25S and the drain terminal 25D are not electrically connected (non-energized state).

  The plurality of charger side connection terminals 3 are respectively electrically connected to the plurality of terminal side connection terminals 5 while the mobile terminal 4 is in the accommodated state. The plurality of charger side connection terminals 3 are formed so as to be able to advance and retreat following the connection / disconnection of the portable terminal 4 with respect to the charger 2 while maintaining the connection state of the plurality of terminal side connection terminals 5. As shown in FIG. 6, the plurality of charger side connection terminals 3 in the present embodiment are spring terminals, and include a main body portion 31, a terminal portion 32, and a terminal portion urging member (not shown). The main body 31 is fixed to the charger-side connector 24. The terminal part 32 is supported by the main body part 31 so as to be movable in the direction in which the mobile terminal 4 is separated from and in contact with the charger 2, the vertical direction in the present embodiment. The terminal portion biasing member is interposed between the main body portion 31 and the terminal portion 32, so that the terminal portion 32 is the most from the main body portion 31 in a state where no external force is applied to the terminal portion 32 (no load state). For example, it is a coil spring that urges the terminal portion 32 upward with respect to the main body portion 31 so as to protrude.

  The plurality of charger side connection terminals 3 in the present embodiment include a charger side detection terminal 3D, a charger side power supply terminal 3P, a charger side GND terminal 3G, and a charger side recognition signal terminal 3R. . The charger side detection terminal 3D is electrically connected to the terminal side detection terminal 5D in the accommodated state. The charger side power supply terminal 3P is electrically connected to the terminal side power supply terminal 5P in the accommodated state. The charger-side GND terminal 3G is applied with 0V and is electrically connected to the terminal-side GND terminal 5G in the accommodated state. The charger side recognition signal terminal 3R is electrically connected to the terminal side recognition signal terminal 5R in the accommodated state. The plurality of charger side connection terminals 3 have different lengths in the vertical direction of the terminal portions 32 exposed from the main body portion 31 in an unloaded state. That is, the plurality of charger side connection terminals 3 have different upward lengths from the bottom surface 21d to the tip in an unloaded state.

  The lengths Hd, Hp, Hg, and Hr of the charger-side detection terminal 3D, the charger-side power supply terminal 3P, the charger-side GND terminal 3G, and the charger-side recognition signal terminal 3R in the no-load state are Hg> Hp = Hr> Hd. That is, in the no-load state, the charger side detection terminal 3D is the shortest, the charger side GND terminal 3G is long, the charger side power supply terminal 3P and the charger side recognition signal terminal 3R are connected to the charger side detection terminal 3D and the charger. This is the length between the side GND terminal 3G. Therefore, when the portable terminal 4 is in the accommodated state with respect to the charger 2, the charger side GND terminal 3G is first connected to the terminal side GND terminal 5G, and then the charger side power terminal 3P is connected to the terminal side power terminal. 5P and the charger side recognition signal terminal 3R are connected to the terminal side recognition signal terminal 5R, and finally, the charger side detection terminal 3D is connected to the terminal side detection terminal 5D. On the other hand, when the portable terminal 4 is detached from the charger 2 from the housed state, the charger side detection terminal 3D is first disconnected from the terminal side detection terminal 5D, and then the charger side power supply terminal 3P is connected to the terminal side power supply. The terminal 5P and the charger side recognition signal terminal 3R are disconnected from the terminal side recognition signal terminal 5R. Finally, the charger side GND terminal 3G is disconnected from the terminal side GND terminal 5G. In addition, as shown in FIG. 1, the plurality of charger side connection terminals 3 in this embodiment are arranged in two rows in the front-rear direction and eight rows in the width direction. There are no restrictions on the arrangement.

  The mobile terminal 4 is carried by an operator and used for performing various operations by performing various operations. As shown in FIG. 10, the mobile terminal 4 includes a housing 41, a power supply circuit 42, a charging circuit 43, a battery 44, a terminal control unit 45, a storage unit 46, a display unit 47, and an operation unit 48. And a terminal-side connector 49 provided with a plurality of terminal-side connection terminals 5. Further, although not shown in the figure, it further includes a communication unit for exchanging information with an external device at least either wirelessly or by wire.

  The casing 41 is formed in a flat plate shape as shown in FIG. At least the casing 41 is provided with the display unit 47, the operation unit 48, and the terminal-side connector 49 exposed to the outside (see FIGS. 8 and 11). The housing 41 includes a terminal surface 41a and a width direction regulating hole 41b. As shown in FIG. 8, the terminal surface 41a is one of the outer peripheral surfaces of the housing 41 and is a surface facing the bottom surface 21d. A plurality of terminal-side connection terminals 5 are provided on the terminal surface 41a. In the present embodiment, a part of the terminal-side connector 49, that is, the plurality of terminal-side connection terminals 5 are exposed to the outside at the center in the width direction of the terminal surface 41a. The width direction restricting hole 41b is formed to correspond to each width direction restricting portion 21g, and the width direction restricting portion 21g is inserted in the accommodated state. The width direction restricting holes 41b are formed by notching the housing 41 so as to open to the back surface 41c and the terminal surface 41a on the terminal surface 41a side of both ends in the width direction of the back surface 41c of the housing 41, respectively.

  Further, as shown in FIG. 7, the housing 41 is formed with a terminal-side protruding portion 41 d that constitutes a part of the resistance creating portion 6 in the embodiment. The terminal-side protrusion 41d is formed on the surface facing the facing surface 22d of the flap 22, that is, the back surface 41c. The terminal side protrusions 41d are formed on the terminal surface 41a side of both ends in the width direction of the back surface 41c. As shown in FIG. 9, each terminal-side protrusion 41 d in the present embodiment has a triangular prism shape, and is formed closer to the center than the width-direction regulating hole 41 b in the width direction. Here, the pair of flap-side protrusions 22c and the terminal-side protrusions 41d are at least partially overlapped in the present embodiment in the vertical direction in the accommodated state of the mobile terminal 4, and the flap 22 and the housing 41 is formed. Further, as shown in FIG. 12, the pair of flap-side protrusions 22c and the terminal-side protrusions 41d do not appear to be in contact between the housed state of the mobile terminal 4 and the detection terminal disconnected state in the width direction view. Is formed. That is, the resistance creating unit 6 holds the mobile terminal 4 in the accommodated state of the mobile terminal 4, that is, as shown in FIG. 11, until all the connection terminals are in the connected state until the detection terminal is disconnected. Even if it is moved relative to the charger 2 in the direction opposite to the insertion direction (downward) (upward), no resistance is created. Further, as shown in FIG. 14, the pair of flap-side protrusions 22 c and terminal-side protrusions 41 d accommodate the mobile terminal 4 between the detection terminal disconnected state and the power supply terminal disconnected state. It forms so that it may contact in the width direction view in a state. That is, when the resistance creating unit 6 moves the mobile terminal 4 relative to the charger 2 in the direction opposite to the insertion direction (downward) (upward) and pulls out the mobile terminal 4 from the charger 2, A resistance is created from when the power supply terminal is disconnected.

  As long as it is detected that the power supply circuit 42 is connected to the charger 2 as shown in FIG. 10, power is supplied from the charger 2 via the charger-side power supply terminal 3P and the terminal-side power supply terminal 5P. Accept. The power supply circuit 42 is electrically connected to the terminal-side recognition signal terminal 5R, the terminal-side detection terminal 5D, the terminal-side power supply terminal 5P, the terminal-side GND terminal 5G, and the charging circuit 43, respectively. In the power supply circuit 42, the terminal side recognition signal terminal 5R and the charger side recognition signal terminal 3R are electrically connected (identification signal terminal connection state), the identification voltage is applied from the charger 2, and the identification voltage is charged to the charger 2. When it is determined whether or not the voltage is a specific predetermined voltage, and it is determined that the identification voltage is the predetermined voltage, it is turned ON. When the power supply circuit 42 is turned on, it applies a detection voltage to the terminal-side detection terminal 5D. That is, when the power supply circuit 42 determines that the one on which the portable terminal 4 is placed is the charger 2, the switch circuit 25 is energized, the power supply terminal connection state, the terminal side GND terminal 5G, and the charger side GND. When the terminal 3 </ b> G is electrically connected (GND terminal connected state), the power from the charger 2 is supplied to the battery 44 through the charging circuit 43. Further, the power supply circuit 42 is turned off when the detection terminal connection state is changed to the detection terminal non-connection state. When the power supply circuit 42 is turned off, the electrical connection between the terminal-side recognition signal terminal 5R and the terminal-side power supply terminal 5P is cut off by cutting off the current from the terminal-side recognition signal terminal 5R and the terminal-side power supply terminal 5P. To do. Here, the power supply circuit 42 is turned off after a predetermined time X (for example, 1.5 msec) has elapsed since the detection terminal is disconnected.

  The charging circuit 43 is electrically connected to the battery 44, and performs charging control of the battery 44 with power from the charger 2 supplied from the power supply circuit 42. The charging circuit 43 monitors the charging state of the battery 44, and determines whether charging is necessary according to the charging state and charges the battery 44.

  The battery 44 is a rechargeable secondary battery, and serves as a power source for the portable terminal 4 when the operator removes the portable terminal 4 from the charger 2 and operates the portable terminal 4 while carrying it. Examples of the battery 44 include a lead storage battery, a nickel / cadmium storage battery, and a nickel / hydrogen storage battery. The battery 44 may be provided in the housing 41 so as to be easily replaceable.

  The terminal control unit 45 is electrically connected to each device mounted on the mobile terminal 4 and controls each device. The terminal control unit 45 has a hardware configuration mainly including a CPU (Central Processing Unit) that performs arithmetic processing, a memory (RAM, ROM), and the like.

  The storage unit 46 is a device that permanently stores programs and information. The storage unit 46 includes an internal storage device such as a magnetic disk represented by a hard disk drive, and an external storage device such as a flash memory represented by a USB memory.

  The display unit 47 displays information necessary for the operator based on the display control of the terminal control unit 45. As shown in FIG. 11, the display unit 47 is a display such as a liquid crystal display or an organic EL display that is arranged with the display surface exposed on the front surface 41 e of the housing 41 and driven by power from the battery 44. The display unit 47 in the present embodiment is a touch panel display that also has a function as an input unit in addition to the function of performing display on the mobile terminal 4, and when the user presses an arbitrary position, an electric signal for the position is controlled by the terminal. Is output to the unit 45.

  The operation unit 48 is used by an operator to input an electrical signal based on the operation to the terminal control unit 45. The operation unit 48 is arranged with the operation surface exposed on the front surface 41e of the housing 41. For example, a button that outputs an electric signal when pressed, or an electric signal whose voltage is changed when rotated is output. It consists of volumes to be used.

  The terminal-side connector 49 fixes the plurality of terminal-side connection terminals 5 to the mobile terminal 4. As shown in FIG. 8, the terminal-side connector 49 is provided with a plurality of terminal-side connection terminals 5 exposed on the terminal surface 41a.

  The plurality of terminal side connection terminals 5 are electrically connected to the plurality of charger side connection terminals 3 as shown in FIG. The plurality of terminal side connection terminals 5 in the present embodiment include a terminal side detection terminal 5D, a terminal side power supply terminal 5P, a terminal side GND terminal 5G, and a terminal side recognition signal terminal 5R. The plurality of terminal side connection terminals 5 are formed in a planar shape as shown in FIG.

  Next, charging of the mobile terminal 4 by the mobile terminal charging system 1 according to the present embodiment will be described. First, the process until the battery 44 is charged by placing the mobile terminal 4 on the charger 2 will be described. First, the operator inserts a part of the portable terminal 4 into the terminal accommodating portion 21e to make the accommodated state. At this time, before entering the accommodation state, first, the GND terminal connection state is established, and then, as shown in FIG. 13, the power supply terminal connection state and the recognition signal terminal connection state are established. Here, the power supply circuit 42 is turned on, the switch circuit 25 and the power supply circuit 42 are electrically connected, and power can be supplied from the power supply 100 to the power supply circuit 42. Further, when the recognition signal terminal is connected, the detection voltage is applied from the power supply circuit 42 to the terminal-side detection terminal 5D. Then, as shown in FIG. 11, when the housing state is reached, the detection terminal is connected, the detection voltage is applied to the switch circuit 25, the switch circuit 25 is energized, and the battery is connected via the power supply circuit 42 and the charging circuit 43. 44 is supplied with power from the power supply 100, and the battery 44 is charged.

  Next, a description will be given until the charging of the battery 44 is completed by removing the portable terminal 4 from the charger 2. When the portable terminal 4 is in the housed state, the battery 2 can supply power from the power source 100 to the battery 44, and as shown in FIG. 12, the pair of flap side protrusions 22c and terminal side protrusions 41d are in contact with each other. It is not in a state. Next, when the operator removes the portable terminal 4 from the charger 2, that is, pulls the portable terminal 4 upward with respect to the charger 2, the portable terminal 4 moves vertically with respect to the charger 2. The plurality of charger side connection terminals 3 extend while maintaining the connection state with the plurality of terminal side connection terminals 5, respectively. At this time, the pair of flap-side protrusions 22c and the terminal-side protrusions 41d maintain a state where they are not in contact with each other, so that it is necessary for the operator to pull the portable terminal 4 upward with respect to the charger 2. The force is constant. Next, when the operator continues to pull up the portable terminal 4 with respect to the charger 2, the detection terminal is brought into a non-contact state as shown in FIG. Here, since the detection terminal is not connected, the power supply circuit 42 is turned off after the predetermined time X has elapsed. At this time, the pair of flap-side protrusions 22c and the terminal-side protrusion 41d start contact as shown in FIG. When the operator pulls the portable terminal 4 upward with respect to the charger 2 in a state where the pair of flap-side protrusions 22c and the terminal-side protrusion 41d are in contact, the terminal-side protrusion 41d gets over the flap-side protrusion 22c. It will be. In order for the terminal-side protrusion 41d to get over the flap-side protrusion 22c, the flap 22 is rotated toward the retracted position against the urging member 23 that urges the flap 22 toward the closed position. This acts as a resistance force, and the force required for the operator to lift the portable terminal 4 further upward with respect to the charger 2 is increased. Therefore, when the force with which the operator pulls the portable terminal 4 upward with respect to the charger 2 is constant, the speed at which the portable terminal 4 is separated in the vertical direction with respect to the charger 2 is slow. Next, when the operator continues to pull up the portable terminal 4 with respect to the charger 2, the power supply terminal disconnected state and the recognition signal terminal disconnected state are entered. Here, when the power supply terminal is not connected and the recognition signal terminal is not connected, the power supply circuit 42 is turned OFF, and the switch circuit 25 and the power supply circuit 42 are not electrically connected. The power is not supplied. At this time, the terminal-side protrusion 41d gets over the flap-side protrusion 22c and the contact ends between the pair of flap-side protrusions 22c and the terminal-side protrusion 41d. Since the pair of flap-side protrusions 22c and the terminal-side protrusion 41d are not in contact with each other, the resistance force does not act, and the operator who has been enlarged pulls the portable terminal 4 further upward with respect to the charger 2. The required force is reduced. Next, when the operator continues to pull up the portable terminal 4 with respect to the charger 2, the GND terminal is brought into a non-contact state, the portable terminal 4 is removed from the terminal accommodating portion 21 e, and the portable terminal 4 is pulled out from the charger 2. It is. The resistance is set such that when the portable terminal 4 is pulled upward with respect to the charger 2, the charger 2 follows the portable terminal 4 and floats from the place where the charger 2 is placed. Yes.

  In the mobile terminal charging system 1 according to the present embodiment, the resistance creation unit 6 creates resistance while the mobile terminal 4 is moved relative to the charger 2 in the direction opposite to the insertion direction, and the operator charges by the resistance force. The force required to pull the portable terminal 4 further upward relative to the device 2 can be increased. FIG. 15 is a relationship diagram between ON / OFF of the power supply circuit and the connection terminal OFF timing when the resistance creating unit is not provided. FIG. 16 is a relationship diagram between ON / OFF of the power supply circuit and the connection terminal OFF timing in the case where the resistance creating unit is provided. As shown in FIG. 15, when the resistance creating unit 6 is not provided, the operator charges the battery from the detection terminal disconnected state (detection terminal OFF) to the power supply terminal disconnected state (power supply terminal OFF). No resistance is created against the portable terminal 4 being pulled upward relative to the device 2. Therefore, for example, when the operator pulls out quickly or pulls obliquely, the predetermined time X when the power supply circuit 42 is turned off from the detection terminal non-connected state by performing a different pulling method from a normal pulling method. By the time, there is a possibility that the power supply terminal is not connected (power supply terminal OFF) (Y shown in the figure). When the power supply terminal 42 is disconnected before the power supply circuit 42 is turned off, a current flows between the charger side power supply terminal 3P and the terminal side power supply terminal 5P, and the charger side power supply terminal 3P is connected to the terminal side. It will be separated from the power supply terminal 5P, and a spark may occur. As a result, when the mobile terminal 4 is repeatedly inserted into and removed from the charger 2, so-called insertion / extraction is repeatedly performed, the plating applied to the charger side power terminal 3P and the terminal side power terminal 5P is peeled off, that is, the charger side power terminal 3P. In addition, the terminal-side power supply terminal 5P may be damaged, and the battery 44 may be poorly charged. On the other hand, as shown in FIG. 16, when the resistance creating unit 6 is provided, the operator is charged from the detection terminal disconnected state (detection terminal OFF) to the power supply terminal disconnected state (power supply terminal OFF). A resistance is created against the portable terminal 4 being pulled upward relative to the device 2. Therefore, even if the extraction method is different from the normal normal extraction method, the detection terminal is not connected and the power supply terminal is not connected as compared with the case where resistance is not created. Therefore, it is possible to suppress the power supply terminal non-connected state (power supply terminal OFF) from the detection terminal non-connected state to the predetermined time X when the power supply circuit 42 is turned OFF (shown in the same figure). Z).

  As described above, since the mobile terminal charging system 1 according to the present embodiment is in the closed position where the flap 22 closes the terminal accommodating portion 21e when no external force is applied, a foreign object is attached to the plurality of charger side connection terminals 3. Can be prevented from adhering. Moreover, the portable terminal charging system 1 according to the present embodiment allows the resistance creation unit 6 to supply power from the power supply 100 to the battery 44 until the power supply circuit 42 is turned off from the detection terminal non-connected state, that is, It is possible to prevent the power supply terminal from being disconnected. Thus, the occurrence of sparks between the connection terminals can be suppressed.

  In addition, even if the flap side protrusion part 22c and the terminal side protrusion part 41d in the said embodiment are integrally formed with respect to the flap 22 and the housing | casing 41, respectively, it forms as a separate member with respect to the flap 22 and the housing | casing 41. May be. When formed as a separate member, the flap-side protrusion 22c is bonded to the existing charger 2 and portable terminal 4 that are not provided with the flap-side protrusion 22c and the terminal-side protrusion 41d with an adhesive or a double-sided adhesive sheet. And the resistance creation part 6 can be formed by fixing the terminal side protrusion part 41d to the flap 22 and the housing | casing 41, respectively.

  Moreover, in the said embodiment, although the resistance creation part 6 was made into the flap side protrusion part 22c and the terminal side protrusion part 41d, it is not limited to this. FIG. 17 is a diagram illustrating a modification of the resistance creating unit. FIG. 18 is a diagram illustrating a modification of the resistance creating unit. As illustrated in FIG. 17, the resistance creating unit 6 may be a contact protrusion 22 e formed on the facing surface 22 d of the flap 22 and a recess 41 f formed on the housing 41 of the mobile terminal 4. In this case, the contact protrusion 22e enters the recess 41f by the urging force of the urging member 23 acting on the flap 22 between the detection terminal non-contact state and the power supply terminal non-contact state. Will be created. As shown in FIG. 18, the resistance creating unit 6 may be a contact protrusion 41 g formed on the housing 41 of the mobile terminal 4 and a recess 22 f formed on the facing surface 22 d of the flap 22. In this case, the contact protrusion 41g enters the recess 22f by the urging force of the urging member 23 acting on the flap 22 between the detection terminal non-contact state and the power supply terminal non-contact state. Will be created.

DESCRIPTION OF SYMBOLS 1 Portable terminal charging system 2 Charger 22 Flap 22c Flap side protrusion part 22e Contact protrusion part 22f Depression part 23 Energizing member 25 Switch circuit 3 Charger side connection terminal 3D Charger side detection terminal 3G Charger side GND terminal 3P Charger Side power terminal 3R charger side recognition signal terminal 4 mobile terminal 41a terminal surface 41d terminal side protrusion 41f depression 41g contact protrusion 42 power supply circuit 44 battery 5 terminal side connection terminal 5D terminal side detection terminal 5G terminal side GND terminal 5P terminal Side power supply terminal 5R Terminal side recognition signal terminal 6 Resistance creation unit 100 Power supply 200 AC adapter

In order to solve the above-described problems and achieve the object, a charger connected to a power source, a plurality of charger side connection terminals provided in the charger, a portable terminal having a battery, and the portable terminal A plurality of terminal-side connection terminals provided, and the terminal-side connection terminal and the charger-side connection terminal are electrically connected to each other so that the battery is charged by the power from the power source. In the charging system, the terminal-side connection terminal includes a terminal-side detection terminal and a terminal-side power supply terminal, and the charger-side connection terminal maintains a connection state of the terminal-side connection terminal. The mobile terminal is formed so as to be able to advance and retreat following the connection / disconnection of the portable terminal with respect to the charger, connected to the charger-side detection terminal connected to the terminal-side detection terminal, the terminal-side power supply terminal, and an external force is applied. In the state that is not A charger-side power supply terminal that is longer than the charger-side detection terminal, and the charger is provided with the charger-side connection terminal on the bottom surface and the terminal-side connection terminal. When a part of the mobile terminal including the terminal surface is inserted, the terminal housing part to which the terminal side connection terminal and the charger side connection terminal are electrically connected, and the insertion direction of the mobile terminal A flap that rotates between a closed position that closes the terminal accommodating portion and a retracted position where the portable terminal can be inserted into the terminal accommodating portion; and an urging member that urges the flap toward the closed position; When it is detected that the terminal-side detection terminal and the charger-side detection terminal are in a detection terminal connection state and the charger is connected to the portable terminal based on the detection terminal connection state, the terminal side Power terminal and A switch circuit that supplies power from the power source to the battery via a charger-side power terminal, and the charging is performed while the portable terminal is detected to be connected to the charger. A power supply circuit that supplies power from the charger to the battery via a charger side power supply terminal and the terminal side power supply terminal, and the portable terminal is placed in a direction opposite to the insertion direction with respect to the charger. By the relative movement, after the terminal side detection terminal and the charger side detection terminal are in the detection terminal disconnected state, the terminal side power supply terminal and the charger side power supply terminal are in the power supply terminal disconnected state. A resistance creating unit that creates resistance against the relative movement, and the resistance creating unit is formed on the flap side protrusion formed on the flap, the portable terminal, and the detection terminal non- And a terminal-side protrusion that contacts the flap-side protrusion between the connection state and the power-supply terminal non-connection state.
In order to solve the above-described problems and achieve the object, a charger connected to a power source, a plurality of charger-side connection terminals provided in the charger, a portable terminal having a battery, and the portable A plurality of terminal-side connection terminals provided in the terminal, and the terminal-side connection terminal and the charger-side connection terminal are electrically connected, whereby the battery is charged with power from the power source. In the mobile terminal charging system, the terminal side connection terminal includes a terminal side detection terminal and a terminal side power supply terminal, and the charger side connection terminal maintains a connection state of the terminal side connection terminal However, the battery-side detection terminal connected to the terminal-side detection terminal, connected to the terminal-side power supply terminal, and external force is formed so as to be able to advance and retreat following the separation and connection of the portable terminal with respect to the charger. Is not working A charger-side power supply terminal that is longer than the charger-side detection terminal, and the charger is provided with the charger-side connection terminal on the bottom surface and the terminal-side connection terminal. A terminal accommodating portion in which the terminal-side connection terminal and the charger-side connection terminal are electrically connected by inserting a part of the mobile terminal including the terminal surface, and an insertion direction of the mobile terminal A flap that rotates between a closed position that closes the terminal accommodating portion when viewed and a retracted position where the portable terminal can be inserted into the terminal accommodating portion, and a biasing member that urges the flap toward the closed position And when the terminal-side detection terminal and the charger-side detection terminal are in a detection terminal connection state, and it is detected that the charger is connected to the portable terminal based on the detection terminal connection state, Terminal side power supply terminal And a switch circuit for supplying power from the power source to the battery via the charger side power terminal, and while the portable terminal is detected to be connected to the charger, A power supply circuit that supplies power from the charger to the battery via a charger-side power supply terminal and the terminal-side power supply terminal, and the portable terminal is in a direction opposite to the insertion direction with respect to the charger. By moving the terminal-side detection terminal and the charger-side detection terminal in the detection terminal non-connected state, the terminal-side power terminal and the charger-side power terminal are in the power terminal non-connected state. A resistance creating part that creates resistance against the relative movement until the resistance creating part is formed on one of the flap or the mobile terminal and the flap. Or it is formed in the other of the said portable terminal, It has a hollow part which the said contact protrusion part penetrate | invades after it becomes the said power terminal disconnection state after becoming the said detection terminal non-connection state.

Claims (4)

A charger connected to a power source;
A plurality of charger side connection terminals provided in the charger;
A portable terminal having a battery;
A plurality of terminal-side connection terminals provided in the mobile terminal;
With
The terminal-side connection terminal and the charger-side connection terminal are electrically connected to each other so that the battery is charged by the power from the power source.
The terminal-side connection terminal includes a terminal-side detection terminal and a terminal-side power supply terminal,
The charger side connection terminal is
While maintaining the connection state of the terminal side connection terminal, it is formed so as to freely advance and retreat following the separation and connection of the mobile terminal with respect to the charger,
A charger-side detection terminal connected to the terminal-side detection terminal;
In a state where the terminal side power supply terminal is connected and no external force is acting, a charger side power supply terminal longer than the charger side detection terminal,
Comprising
The charger is
The terminal side connection terminal and the charger side are inserted by inserting a part of the portable terminal including the terminal surface on which the charger side connection terminal is provided on the bottom surface and the terminal side connection terminal is provided. A terminal accommodating portion electrically connected to the connection terminal;
A flap that rotates between a closed position that closes the terminal accommodating portion in the insertion direction of the portable terminal and a retracted position where the portable terminal can be inserted into the terminal accommodating portion;
A biasing member that biases the flap toward the closed position;
When it is detected that the terminal-side detection terminal and the charger-side detection terminal are in a detection terminal connection state and the charger is connected to the portable terminal based on the detection terminal connection state, the terminal side A switch circuit for supplying power from the power source to the battery via a power supply terminal and the charger side power supply terminal;
Have
The portable terminal is
While it is detected that the battery is connected to the charger, a power supply circuit that supplies power from the charger to the battery via the charger-side power supply terminal and the terminal-side power supply terminal;
Have
By moving the portable terminal relative to the charger in a direction opposite to the insertion direction, the terminal-side detection terminal and the charger-side detection terminal are in a detection terminal non-connected state, and then the terminal-side power supply A resistance creating unit that creates resistance with respect to the relative movement until the terminal and the charger-side power terminal are in a power terminal non-connected state;
A portable terminal charging system. The mobile terminal charging system according to claim 1,
The resistance creation unit
A flap-side protrusion formed on the flap;
A terminal side protrusion that contacts the flap side protrusion between the detection terminal disconnected state and the power terminal disconnected state formed on the portable terminal,
Having
Mobile terminal charging system. The mobile terminal charging system according to claim 1,
The resistance creation unit
A contact protrusion formed on one of the flap or the mobile terminal;
Formed on the other side of the flap or the portable terminal, and from the detection terminal non-connected state until the power terminal non-connected state, a recess portion into which the contact protrusion enters,
Having
Mobile terminal charging system. In the portable terminal charging system according to claim 2 or 3,
The resistance creation unit moves the portable terminal relative to the charger in a direction opposite to the insertion direction until the terminal-side detection terminal and the charger-side detection terminal are in a disconnected state. Non-contact between the mobile terminal and the flap,
Mobile terminal charging system.

Images