JP2021050980A - Electronic apparatus and power supply terminal - Google Patents

Abstract

To provide an electronic apparatus, for example, that can charge with high power supply efficiency without generating any restriction in design and deteriorating an external appearance.SOLUTION: An electronic apparatus includes: an exterior case incorporating a secondary battery and including a terminal hole penetrating internally and externally in a part; a tubular holding member including a protrusion inserted into the terminal hole and protruding from an external surface of the exterior case in an inserted state; and an operation member including a shaft part inserted into the holding member and a head part that is coupled with the shaft part outside the exterior case and has a diameter larger than that of the shaft part. The exterior case includes a surrounding part that surrounds the terminal hole on the external surface and at least a part of the surrounding part is electrically connected to one of a positive electrode and a negative electrode of the secondary battery. The head part of the operation member includes an opposite part that is opposed to the exterior case and at least a part of the opposing part is electrically connected to the other electrode, which is different from the one electrode of the secondary battery. At least a part of the surrounding part and at least a part of the opposite part are used as a charging terminal of the secondary battery.SELECTED DRAWING: Figure 3

Description

The present invention relates to electronic devices and power supply terminals.

Conventionally, electronic devices that can operate continuously without replacing batteries by receiving light such as sunlight using a solar cell to generate electric power and supplying power to the secondary battery. It is in circulation. However, in general, the power supply by the solar cell has a smaller power supply amount than the power supply by the wire, so that the power supply time becomes longer. Therefore, in such an electronic device, when the secondary battery is in a completely discharged state, there is a problem that it takes time for the electronic device to be able to operate again.

On the other hand, when adopting a contact-type charging terminal in an electronic device in order to shorten the power supply time, design restrictions arise when adopting a widely used plug / receptacle type charging terminal. There was a problem. Patent Document 1 describes an arm-worn electronic device that uses a button switch composed of a conductor and a back cover as a charging terminal for a rechargeable battery.

Japanese Unexamined Patent Publication No. 2001-91676

However, since the charging terminal is liable to be scratched or the like due to repeated contact and separation with the power supply terminal each time it is charged, the part such as the button switch or the back cover exposed to the outside should be used as the charging terminal. There was a problem that scratches and the like were conspicuous and the appearance was deteriorated. Therefore, in such an electronic device, it has been required to enable charging with high power feeding efficiency without causing design restrictions and deteriorating the appearance.

The present invention has been made to solve the above-mentioned problems, and provides an electronic device and a power supply terminal capable of charging with high power supply efficiency without causing design restrictions and deteriorating the appearance. The purpose is.

The electronic device according to the present invention has a built-in secondary battery and an outer case having a terminal hole penetrating inside and outside, and an outer case that is inserted through the terminal hole and protrudes from the outer surface of the outer case in the inserted state. An operating member having a tubular gripped member having a protruding portion, a shaft portion inserted through the gripped member, and a head portion connected to the shaft portion outside the outer case and having a diameter larger than that of the shaft portion. The outer case has a surrounding portion that surrounds the terminal hole on the outer surface, and at least a part of the surrounding portion is electrically conductive with one of the positive electrode and the negative electrode of the secondary battery. The head of the operating member has a facing portion facing the outer case, and at least a part of the facing portion is electrically conductive with the other pole different from one pole of the secondary battery, and at least the surrounding portion. A part and at least a part of the facing portion are characterized in that they are used as charging terminals for a secondary battery.

Further, in the electronic device according to the present invention, by moving the operating member in the axial direction of the shaft portion, the operating member is pulled out in the first state in which the operating member is pushed into the outer case and in the direction in which the operating member is separated from the outer case. When the third state and the second state in which the operating member is located between the first state and the third state are transitioned and the operating member is in the second state, at least a part of the surrounding portion is formed. It is preferable that at least a part of the facing portion is used as a charging terminal for the secondary battery.

Further, in the electronic device according to the present invention, when the operating member is not in the second state, it is preferable that at least a part of the facing portion is electrically insulated from the other pole.

Further, in the electronic device according to the present invention, it is preferable that at least a part of the facing portion is in contact with at least a part of the surrounding portion in the first state.

Further, the electronic device according to the present invention further includes an elastic body built in the outer case, and the elastic body causes the operating member to transition to the first state by an elastic force when the operating member is in the second state. Is preferable.

Further, the electronic device according to the present invention further includes a display driving unit for driving a time display unit for displaying the time, and the operating member displays the time by rotating the shaft portion in the circumferential direction in the third state. It is preferable to change the time indicated by the drive unit.

The power supply terminal according to the present invention is a power supply terminal for supplying power to the secondary battery of the electronic device according to the present invention, and is one of a non-conductive electrode support member having a substantially flat plate shape and an electrode support member. The first electrode, which is provided on the surface of the battery and is electrically conductive to one pole of the secondary battery via at least a part of the surrounding portion, and the first electrode provided on the back surface of one surface of the electrode support member and facing each other. It is characterized by comprising a second electrode that is electrically conductive with the other electrode of the secondary battery via at least a part of the portion.

Further, in the power feeding terminal according to the present invention, the electrode support member has a U-shaped substantially flat plate shape in which the minimum opening width of the opening is smaller than the outer diameter of the protruding portion of the gripped member, and the protruding portion. It is preferable that the device can be gripped.

Further, in the power feeding terminal according to the present invention, it is preferable that the first electrode and the second electrode are leaf springs bent in a direction away from the electrode support member in the vicinity of the opening.

An object of the electronic device and power supply terminal according to the present invention is to provide an electronic device and power supply terminal capable of charging with high power supply efficiency without causing design restrictions and deteriorating the appearance. ..

It is a figure which shows an example of the schematic structure of the charging system S1. It is a front view of the clock 1. It is sectional drawing of the clock 1. It is a figure which shows an example of the schematic structure of the clock 1. It is a schematic diagram for demonstrating the operation of a crown 120. It is a schematic diagram for demonstrating the operation of a crown 120. It is a schematic diagram for demonstrating the operation of a crown 120. It is a front view of the power supply terminal 2. It is sectional drawing of the power supply terminal 2. It is sectional drawing of the clock 1 and the power supply terminal 2. It is sectional drawing of the clock 1 and the power supply terminal 2. It is sectional drawing of the clock 1 and the power supply terminal 2. It is a figure which shows an example of the schematic structure of the charging system S2. It is a figure which shows an example of the schematic structure of the clock 4. It is a flow chart which shows an example of the flow of the process executed by a clock 4.

Hereinafter, various embodiments of the present invention will be described with reference to the drawings. However, it should be noted that the technical scope of the present invention is not limited to those embodiments, but extends to the inventions described in the claims and their equivalents.

(First Embodiment)
FIG. 1 is a diagram showing an example of a schematic configuration of a charging system S1 according to the present invention. The charging system S1 includes a clock 1 having a built-in secondary battery, a power supply terminal 2, and a power supply power supply 3. The power supply terminal 2 has a substantially flat plate shape, and is electrically connected to the DC or AC power supply power supply 3 by a conducting wire or the like. As will be described later, the power supply terminal 2 is inserted between the outer case of the watch 1 and the crown to supply the power supplied from the power supply power supply 3 to the secondary battery of the watch 1. The clock 1 is an example of an electronic device.

FIG. 2 is a front view of the clock 1.

The watch 1 includes an exterior case 110, a crown 120, a bezel 130, a dial 140, an hour hand 141, a minute hand 142, a second hand 143, a first return 150 and a second return 151. The outer case 110 is a member that incorporates the secondary battery 160 and the movement 170 (both described later) under the dial 140, and is formed by a conductor. The bezel 130 is an annular member provided on the upper surface of the outer case 110. The dial 140 is a plate-shaped member on which characters and symbols indicating the time are printed or formed, and is arranged inside the outer case 110 so as to be visible from the upper side of the outer case 110. On the upper surface of the dial 140, an hour hand 141, a minute hand 142, and a second hand 143 are provided, which are driven by a movement 170 supplied with power from a secondary battery to display the time. Further, the first facing 150 and the second facing 151 are arranged so as to cover the vicinity of the outer periphery of the upper surface of the dial 140. A windshield 180 (see FIG. 3) is provided on the upper side of the dial 140. The movement 170 is an example of a display drive unit.

FIG. 3 is a cross-sectional view of the clock 1. FIG. 3 is a view showing the vicinity of the crown 120 in the cross-sectional view seen from the I-I direction of FIG. The crown 120 is an example of an operating member.

A terminal hole 111 that penetrates the inside and outside of the exterior case 110 is provided on a part of the side surface of the exterior case 110. A tubular pipe 112 is inserted into the terminal hole 111. The pipe 112 has a protruding portion 113 that protrudes from the side surface of the outer case 110 when inserted into the terminal hole 111. The crown 120 has a shaft portion 121 inserted into the pipe 112, and a head portion 122 that is connected to the shaft portion 121 outside the outer case 110 and has a diameter larger than that of the shaft portion 121. The shaft portion 121 is connected to the movement 170 inside the outer case 110, and a waterproof member 114 is provided on the inner circumference of the terminal hole 111 so that water or the like does not flow into the outer case 110 through the terminal hole 111. The pipe 112 is an example of a member to be gripped.

The crown 120 is movable in a predetermined movable range in the axial direction of the shaft portion 121, and is rotatable in the circumferential direction. The crown 120 transitions between the first state, the second state, and the third state according to its position in the axial direction. The first state is a state in which the crown 120 is pushed in the direction of the outer case 110 as shown in FIG. The third state is a state in which the crown 120 is pulled out in a direction away from the outer case 110. The second state is a state in which the crown 120 is in a position intermediate between the first state and the third state. The second state is a state for charging the secondary battery 160, and the third state is a state for operating the movement 170. The position between the first state and the third state is an example of a rechargeable position.

In the first state, the facing portion 123 of the head portion 122 of the crown 120 facing the outer case 110 can come into contact with the surrounding portion 115 surrounding the terminal hole 111 on the side surface of the outer case 110. The facing portion 123 and the side surface of the head portion 122 are connected by a curved portion 124, and the side surface of the outer case 110 is connected to the bottom surface 117 of the outer case 110 via the curved portion 116. As a result, the distance between the facing portion 123 and the surrounding portion 115 increases as the distance from the axial center of the shaft portion 121 increases.

FIG. 4 is a diagram showing an example of a schematic configuration of the clock 1. As described above, the watch 1 includes an outer case 110, a crown 120, a secondary battery 160, a movement 170, and a charging circuit 190.

The secondary battery 160 is a member for supplying electric power to the movement 170 and the charging circuit 190, and is, for example, a lithium ion battery. The charging circuit 190 is a power supply circuit built in the outer case 110 for charging the secondary battery 160, and is, for example, a printed circuit board having a rectifying function, a voltage control function, and a current control function. The charging circuit 190 converts the input power input via the positive input terminal 191 and the negative input terminal 192 into the output power of the current value and the voltage value corresponding to the secondary battery 160, and converts the positive output terminal 193 and the negative output. Output via terminal 194.

The positive output terminal 193 and the negative output terminal 194 of the charging circuit 190 are electrically connected to the positive electrode 161 and the negative electrode 162 of the secondary battery 160, respectively. The positive input terminal 191 of the charging circuit 190 is electrically connected to the outer case 110 via a lead wire or the like. As a result, the surrounding portion 115 of the outer case 110 is electrically conductive with the positive electrode of the secondary battery 160. The negative input terminal 192 of the charging circuit 190 is electrically connected to the crown 120 when the crown 120 is in the second state, as will be described later. As a result, the facing portion 123 of the crown 120 is electrically conductive with the negative electrode of the secondary battery 160. The surrounding portion 115 may be configured to electrically conduct with the negative electrode of the secondary battery 160, and the facing portion 123 may be configured to electrically conduct with the positive electrode of the secondary battery 160.

The movement 170 has a configuration for driving a time display unit such as an hour hand 141, a minute hand 142, and a second hand 143 as a display driving unit, and includes a crystal oscillator, a frequency dividing circuit, a step motor, a train wheel, and the like. The crystal oscillator includes a piezoelectric body and electrodes, and outputs a high frequency signal. The frequency dividing circuit converts the high-frequency signal output from the crystal oscillator into a pulse signal having a predetermined period (for example, a signal of one pulse per second) and outputs the signal. The step motor rotates the rotor by a predetermined angle according to the pulse signal output from the frequency dividing circuit. The train wheel has a plurality of gears and transmits the rotation of the rotor of the step motor to the hour hand 141, the minute hand 142 and the second hand 143 while changing the rotation speed. In this way, the movement 170 drives time displays such as the hour hand 141, the minute hand 142, and the second hand 143 so that they display the time.

Further, the movement 170 is connected to the crown 120. The crown 120 transmits the rotational force to the movement 170 by rotating the shaft portion 121 in the circumferential direction in the third state, and drives the time display unit to change the time displayed by the time display unit.

5 to 7 are schematic views for explaining the operation of the crown 120. Inside the outer case 110, the crown 120 is connected so as to be able to transmit a rotational force to the train wheel of the movement 170 via the knob wheel 171 and the small iron wheel 172 of the movement 170. Further, inside the outer case 110, the crown 120 is electrically connected to the negative input terminal 192 of the charging circuit 190 via a mandarin duck 173 and a kanuki 174, both of which are formed of conductors.

FIG. 5 is a schematic view for explaining the connection between the crown 120, the movement 170, and the charging circuit 190 in the first state in which the crown 120 is pushed in the direction of the outer case 110.

A winding stem 125, which is a substantially prismatic conductor, is screwed to the tip surface of the shaft portion 121 of the crown 120 to be connected. The winding wheel 171 is penetrated by the winding stem 125, rotates in conjunction with the circumferential direction of the winding stem 125, and is slidable in the axial direction. On one surface of the knob wheel 171, a small iron wheel 172 that fits with any one of the plurality of gears of the train wheel of the movement 170 and an instep tooth 171a that can be occluded are provided. In FIG. 5, since the crown 120 is in the first state, the squeeze wheel 171 and the small iron wheel 172 do not occlude, and the rotational force of the crown 120 is not transmitted to the train wheel of the movement 170.

A groove portion 126 having a diameter smaller than that of the other portion is provided in a part of the winding stem 125, and the first tip portion 173a of the mandarin duck 173 is fitted in the groove portion 126. The tip portion 174a of the kanuki 174 is fitted into the groove portion 171b of the knob wheel 171. Kannuki 174 has a first valley portion 174b, a mountain portion 174c and a second valley portion 174d. In the first state, the second tip portion 173b of the mandarin duck 173 fits into the first valley portion 174b of the mandarin duck 174. Further, the kanuki 174 receives an elastic force from the kanuki spring 175 and is locked in a state where the second tip portion 173b is fitted to the first valley portion 174b. The Kannuki spring 175 is an example of an elastic body.

FIG. 6 is a schematic view for explaining the connection between the crown 120, the movement 170, and the charging circuit 190 in the second state in which the crown 120 is pulled out in the direction away from the outer case 110 in the first state.

When the crown 120 is pulled out in the direction away from the outer case 110 (upward in FIG. 6), the first tip portion 173a of the mandarin duck 173 fitted in the groove 126 of the winding stem 125 is pushed in that direction, thereby causing the mandarin duck. The 173 rotates in the first direction (counterclockwise direction in FIG. 6). Due to the rotation of the mandarin duck 173, the second tip portion 173b pushes the mountain portion 174c of the kanuki 174 to rotate the kanuki 174 in the second direction opposite to the first direction. Due to the rotation of the Kannuki 174, the leg portion 174e of the Kannuki 174 comes into contact with the negative input terminal 192 of the charging circuit 190. As a result, the crown 120 is electrically connected to the charging circuit 190 via the mandarin duck 173 and the mandarin duck 174. The mandarin duck 173 may be formed of a non-conductor and the tsutsumi wheel 171 may be formed of a conductor so that the crown 120 conducts with the charging circuit 190 via the tsutsumi wheel 171 and the kanuki 174.

Further, due to the rotation of the Kannuki 174, the squeeze wheel 171 to which the tip portion 174a of the Kannuki 174 is fitted slides in a direction close to the small iron wheel 172.

Further, in the second state, the Kannuki 174 receives an elastic force for rotating in the first direction by the Kannuki spring 175. As a result, when the crown 120 no longer receives the pulling force in the second state, the crown 120 transitions to the first state due to the elastic force and is locked.

FIG. 7 is a schematic view for explaining the connection between the crown 120, the movement 170, and the charging circuit 190 in the third state in which the crown 120 is further pulled out in the direction away from the outer case 110 in the second state.

When the crown 120 is further pulled away from the outer case 110, the mandarin duck 173 further rotates in the first direction. By the rotation of the mandarin duck 173, the second tip portion 173b pushes out the mountain portion 174c to further rotate the kanuki 174 in the second direction and fits into the second valley portion 174d. The rotation of the kanuki 174 separates the leg 174e from the negative input terminal 192 and electrically insulates it. Further, due to the rotation of the Kannuki 174, the squeeze wheel 171 further slides in the direction close to the small iron wheel 172, and the instep teeth 171a occlude with the small iron wheel 172. As a result, the rotational force of the crown 120 is transmitted to the train wheel of the movement 170.

Further, also in the third state, the Kannuki 174 receives an elastic force that rotates in the first direction by the Kannuki spring 175. However, since the second tip portion 173b of the mandarin duck 173 is fitted to the second valley portion 174d of the mandarin duck 174, even if the crown 120 does not receive the pulling force in the third state, the crown 120 remains in the third state. Locked.

FIG. 8 is a front view of the power supply terminal 2, and FIG. 9 is a cross-sectional view of the power supply terminal 2. FIG. 9 is a cross-sectional view seen from the II-II cross section of FIG.

The power feeding terminal 2 has an electrode support member 210, a first electrode 220, and a second electrode 230. The electrode support member 210 is a non-conductive member having a substantially flat plate shape. A part of the electrode support member 210 is provided with a substantially circular hole portion 211 that penetrates the front and back surfaces and has a diameter larger than the outer diameter of the protruding portion 113 of the pipe 112. A part of the outer circumference of the hole 211 is connected to the opening side 213 of the electrode support member via an opening 212 whose minimum opening width is smaller than the outer diameter of the protruding portion 113 and larger than the outer diameter of the shaft portion 121. To. As a result, the electrode support member 210 has a substantially U-shaped shape and can grip the protruding portion 113. In the vicinity of the opening side 213, a tapered structure 214 whose thickness decreases as it approaches the opening side 213 is provided.

The first electrode 220 is a conductor having a U-shaped substantially flat plate shape, which is provided on one surface of the electrode support member 210, avoiding the holes 211 and the openings 212, respectively. The second electrode 230 is a conductor having a U-shaped substantially flat plate shape, which is provided on the surface of the electrode support member 210 on the back side of the surface on which the first electrode 220 is provided, in the same manner as the first electrode 220. .. The first electrode 220 has a leaf spring structure that is bent in a direction away from the electrode support member 210 on each of the facing side portions 221 corresponding to the two facing sides in a U shape. Further, the second electrode 230 has a leaf spring structure on each of the facing side portions 231 like the first electrode 220. As a result, the power feeding terminal 2 has a tapered structure in which the thickness decreases toward the opening side 213 of the electrode support member 210 as a whole. The first electrode 220 and the second electrode 230 are electrically connected to the positive electrode and the negative electrode of the power feeding power supply 3 via lead wires (not shown) or the like, respectively.

10 to 12 show the watch 1 and the case where the power supply terminal 2 is inserted between the outer case 110 and the crown 120 of the watch 1 in order to supply power to the secondary battery of the watch 1 using the power supply terminal 2. It is sectional drawing of the power supply terminal 2.

FIG. 10 is a view showing the vicinity of the crown 120 in the cross-sectional view seen from the I-I cross section of FIG. 2 while the power supply terminal 2 is being inserted between the outer case 110 and the crown 120. .. As shown in FIG. 10, the power supply terminal 2 is inserted between the head 122 of the crown 120 and the outer case 110 from below the watch 1.

In the first state where the facing portion 123 of the crown 120 and the surrounding portion 115 of the outer case 110 are in contact with each other, when the power feeding terminal 2 is inserted, the power feeding terminal 2 has a tapered structure 214 or a leaf spring structure. The opposite side portion 221 of the first electrode 220 comes into contact with the curved portion 124 of the crown 120. Upon contact, the opposing portion 123 of the crown 120 receives a force that pushes the crown 120 away from the outer case 110, and the crown 120 transitions to the second state. Subsequently, the power feeding terminal 2 is inserted so that the shaft portion 121 of the crown 120 that has transitioned to the second state passes through the opening 212 of the power feeding terminal. As described above, since the crown 120 has the curved portion 124, the watch 1 enables the user to insert the power supply terminal 2 without pulling out the crown 120 from the outer case 110.

Further, the power feeding terminal 2 may be inserted so that the curved portion 116 of the outer case 110 and the facing side portion 231 of the second electrode 230 are in contact with each other. In this case, as the power feeding terminal 2 is inserted, the facing side portion 221 of the first electrode 220 comes into contact with the facing portion 123 or the curved portion 124 of the crown 120. Due to the contact, as described above, the facing portion 123 of the crown 120 receives a force that pushes the crown 120 away from the outer case 110, the crown 120 transitions to the second state, and the power supply terminal 2 is inserted. .. In this way, the watch 1 allows the user to insert the power supply terminal 2 without pulling out the crown 120 from the outer case 110 because the outer case 110 has the curved portion 116.

FIG. 11 is a view after the power feeding terminal 2 is inserted in FIG. 10, and FIG. 12 is a view showing the vicinity of the terminal hole 111 in the cross-sectional view seen from the III-III cross section of FIG. is there. Further, in FIG. 12, the outer circumference of the facing portion 123 is shown by a dotted line. When the power supply terminal 2 is inserted and the protruding portion 113 of the pipe 112 is located inside the hole portion 211 of the power supply terminal 2, the second electrode 230 comes into contact with the surrounding portion 115 of the outer case 110. It will be possible. Since the opening width of the opening 212 is smaller than the outer diameter of the protrusion 113, the electrode support member 210 of the power feeding terminal 2 has the protrusion 113 on the lower side in a state where the second electrode 230 is in contact with the surrounding portion 115. Grasp from. As a result, even if the user does not hold the power supply terminal 2, the power supply terminal 2 does not fall downward due to gravity.

Further, as described with reference to FIG. 5, in the second state, the crown 120 tends to transition to the first state due to the elastic force of the Kannuki spring 175. The power supply terminal 2 is sandwiched between the crown 120 that is about to transition to the first state and the outer case 110, and the facing portion 123 of the crown 120 comes into contact with the facing side portion 221 of the first electrode 220. As a result, the positive electrode of the power supply power supply 3 connected to the first electrode 220 and the positive electrode 161 of the secondary battery 160 are electrically connected, and the negative electrode of the power supply power supply 3 connected to the second electrode 230. The negative electrode of the secondary battery 160 is electrically connected, and power is supplied to the secondary battery 160.

As described above, in the watch 1, the surrounding portion 115 surrounding the terminal hole 111 on the outer surface of the outer case 110 and the facing portion 123 facing the outer case 110 of the head 122 of the crown 120 are the secondary battery 160. Used as a charging terminal. As a result, the watch 1 enables power supply to the secondary battery 160 by contact, and makes it possible to maintain high power supply efficiency without causing design restrictions. That is, since the watch 1 does not need to be provided with a plug / receptacle type charging terminal or the like in order to supply contact power to the secondary battery 160, it is possible to secure the same design as the conventional watch. Further, since the watch 1 uses the surrounding portion 115 and the facing portion 123, which are not exposed during normal use of the watch 1, as charging terminals, even if scratches or the like are caused by charging, the appearance is deteriorated. There is no.

Further, in the watch 1, when the crown 120 is not in the position of the second state, the facing portion 123 is electrically insulated from the secondary battery 160. As a result, the watch 1 can distinguish between a state for supplying power to the secondary battery 160 and a state for performing an operation on the movement 170, and can prevent the movement 170 from being accidentally operated during power supply. To do.

Further, in the timepiece 1, the facing portion 123 can come into contact with the surrounding portion 115 in the first state. As a result, the outer case 110 and the crown 120 become equipotential in the first state, and the watch 1 can suppress the possibility that the electronic components of the watch 1 are affected by electrostatic discharge.

Further, in the watch 1, the kanuki spring 175 locks the crown 120 to the position of the first state by an elastic force. As a result, the facing portion 123 is in contact with the surrounding portion 115, and the watch 1 can suppress the possibility of damage to the surface of the facing portion 123 or the surrounding portion 115. Further, the clock 1 automatically transitions to the first state when the power supply to the secondary battery 160 is completed and the user pulls out the power supply terminal 2, so that the convenience is improved.

In the above description, the clock 1 has been described as an example, but the present invention is not limited to this. The present invention may be applied to any electronic device such as a mobile phone or a game machine, which includes an outer case formed of a conductor and an operating member having a shaft portion and a head, which incorporates a secondary battery. Further, in this case, even if the electronic device has a built-in coil spring as an elastic body and is configured to transition from the second state to the first state by the elastic force of the coil spring connected to the shaft portion of the operating member. Good.

Further, in the above description, the outer case 110 is formed of a conductor, but the present invention is not limited to this. If at least a part of the surrounding portion 115 of the outer case 110 is a conductor and the surrounding portion 115 and the secondary battery 160 are electrically conductive, the other part of the outer case 110 is formed of a non-conductor. You may. Similarly, if at least a part of the facing portion 123 of the crown 120 is a conductor and the facing portion 123 and the secondary battery 160 are electrically conductive, the other part of the crown 120 is formed by a non-conductor. May be done.

(Second embodiment)
FIG. 13 is a diagram showing an example of a schematic configuration of the charging system S2 according to the second embodiment of the present invention. The charging system S2 includes a clock 4, a power supply terminal 2, a power supply power supply 3, a signal output device 5, and a superimposition device 6.

The signal output device 5 is a device that outputs a signal including time information. The signal output device 5 receives the standard radio wave of the radio clock, converts it into an analog voltage signal in a predetermined frequency band (for example, several kHz to several MHz), and outputs it to the superimposing device 6. The signal output device 5 may receive a signal transmitted from a GPS (Global Positioning System) satellite, convert it into a voltage signal in a predetermined frequency band, and output the signal.

The superimposition device 6 superimposes a voltage signal output from the signal output device 5 on the power supply voltage supplied from the power supply power supply 3 and supplies the voltage signal to the power supply terminal 2. The superimposing device 6 has a positive output terminal 61 and a negative output terminal 62 for outputting a superposed voltage signal, the positive output terminal 61 is connected to the first electrode 220 of the power feeding terminal 2, and the negative output terminal 62 is connected to the first electrode 220. It is connected to each of the two electrodes 230.

The power supply terminal 2 has a substantially flat plate shape, and like the watch 1, the power supplied from the power supply 3 by being inserted between the outer case of the watch 4 and the crown is used as the secondary power supply of the watch 1. Power the battery.

The clock 4 receives power from the power supply 3 for power supply via the power supply terminal 2, acquires time information based on the superimposed voltage signal, and indicates the time corresponding to the acquired time information. Control the movement. Since the front view of the watch 4 and the cross-sectional view near the crown are the same as those of the watch 1, the description thereof will be omitted.

FIG. 14 is a diagram showing an example of a schematic configuration of the clock 4. Like the watch 1, the watch 4 includes an exterior case 110, a crown 120, a secondary battery 160, and a charging circuit 190, and also includes a separation circuit 410, a communication unit 420, a movement 430, a storage unit 440, and a processing unit 450. The charging circuit 190, the separation circuit 410, the communication unit 420, the movement 430, the storage unit 440, and the processing unit 450 operate by being supplied with electric power from the secondary battery 160.

The separation circuit 410 is a circuit for separating the voltage signal superimposed by the superimposition device 6 and converting it into digital data indicating time information, and includes a band-passing filter and an amplifier. The band-passing filter is a filter circuit that selectively passes frequencies (for example, several kHz to several MHz) corresponding to the superimposed voltage signal. The amplifier is a circuit that amplifies the voltage signal so that the voltage value of the voltage signal that has passed through the bandpass filter becomes an appropriate value according to the communication unit 420. The amplified voltage signal is supplied to the communication unit 420.

The positive input terminal 411 of the separation circuit 410 is electrically connected to the outer case 110 by a lead wire or the like. The negative input terminal 412 of the separation circuit 410 is electrically connected to the crown 120 in the second state via the mandarin duck 173 and the kanuki 174, similarly to the negative input terminal 192 of the charging circuit in the watch 1. Further, the positive output terminal 413 and the negative output terminal 414 of the separation circuit 410 are connected to the positive input terminal 191 and the negative input terminal 192 of the charging circuit 190, respectively, and supply power to the charging circuit 190.

The communication unit 420 is configured for the processing unit 450 to receive the signal supplied from the signal output device, and includes a communication interface circuit. The communication unit 420 converts the analog voltage signal supplied from the separation circuit into digital data and supplies it to the processing unit 450.

The movement 430 is a display drive unit for driving the hour hand, minute hand, and second hand of the time display unit, and includes a crystal oscillator, a control circuit, a step motor, and a train wheel. The crystal oscillator includes a piezoelectric body and electrodes, and outputs a high frequency signal. The control circuit has a function as a frequency dividing circuit, and converts a high-frequency signal output from the crystal oscillator into a pulse signal having a predetermined period and outputs the signal. The step motor rotates the rotor by a predetermined angle in response to the pulse signal output from the control circuit. The train wheel has a plurality of gears and transmits the rotation of the rotor of the step motor to the hour hand, the minute hand, and the second hand while changing the rotation speed. As a result, the movement 430 drives the time display units such as the hour hand, the minute hand, and the second hand so that they display the time.

Further, the control circuit calculates the indicated positions of the hour hand, the minute hand and the second hand by monitoring the signal output to the step motor, and supplies the signal to the processing unit 450. Further, when a control signal is input from the processing unit 450, the control circuit outputs a signal for rotating the rotor of the step motor in response to the control signal. As a result, the movement 430 drives the time display unit based on the control signal from the processing unit 450.

The storage unit 440 is a device for storing a program or data, and includes, for example, a semiconductor memory device. The storage unit 440 stores an operating system program, a driver program, an application program, data, and the like used for processing by the processing unit 450. The program is installed in the storage unit 440 from a computer-readable portable storage medium such as a CD-ROM or a DVD-ROM using a known setup program or the like.

The processing unit 450 includes one or more processors and peripheral circuits thereof. The processing unit 450 is, for example, a CPU (Central Processing Unit), and controls the operation of the clock 4 in an integrated manner. The processing unit 450 may be a DSP (Digital Signal Processor), an LSI (Large-Scaled IC), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or the like. The processing unit 450 controls the operation of the movement 430 so that various processes of the clock 4 are executed in an appropriate procedure based on the program stored in the storage unit 440. The processing unit 450 can execute a plurality of programs in parallel.

The processing unit 450 includes a communication processing unit 451 as its functional block. The communication processing unit 451 is a functional module realized by a program executed by the processing unit 450. The communication processing unit 451 may be realized as firmware mounted on the clock 4.

FIG. 15 is a flow chart showing an example of the flow of processing executed by the watch 4 when the power supply terminal 2 is inserted between the outer case 110 and the crown 120 of the watch 4. This process is executed by the processing unit 450 collaborating with the communication unit 420 and the movement 430 based on the program stored in the storage unit 440 in advance.

The communication processing unit 451 acquires the time information (S101). The communication processing unit 451 acquires digital data of time information included in the voltage signal output from the separation circuit via the communication unit 420.

Subsequently, the communication processing unit 451 controls the movement 430 so as to display the time corresponding to the acquired time information (S102), and ends the processing. The communication processing unit 451 acquires the current indicated time by acquiring the current indicated positions of the hour hand 141, the minute hand 142, and the second hand 143 from the control circuit of the movement 430. Subsequently, the communication processing unit 451 determines whether or not the acquired time information and the acquired indicated time in the lower part match. If it is determined that they do not match, the communication processing unit 451 sends a control signal for driving the hour hand 141, the minute hand 142, and the second hand 143 so that the acquired current indicated time matches the time corresponding to the acquired time information. Output to the control circuit of the movement 430. As a result, the communication processing unit 451 controls the movement 430 so as to display the time corresponding to the acquired time information.

As described above, the clock 4 according to the present invention is a movement that acquires time information from a voltage signal including time information superimposed on the power supply voltage via the power supply terminal 2 and indicates the acquired time. Control 430. As a result, the clock 4 does not need to be provided with an antenna or the like in order to acquire time information, and the number of parts is reduced. Therefore, the design is improved while having a function of instructing an accurate time.

In the above description, the time information is included in the voltage signal, but the present invention is not limited to this, and arbitrary data may be included in the voltage signal. For example, the voltage signal may include data for updating the firmware of the clock 4. In this case, the communication processing unit 451 updates the firmware in response to receiving the data for updating the firmware.

Further, in this case, the communication processing unit 451 that has received the arbitrary data may transmit a response signal indicating that the data has been normally received to the signal output device 5. In this case, the communication unit 420 converts the response signal into an analog voltage signal having a frequency band different from the frequency band of the voltage signal output by the signal output device 5, and outputs the response signal to the separation circuit 410. The different frequency bands are, for example, lower frequency bands than the frequency band of the voltage signal output by the signal output device 5. The separation circuit 410 transmits the voltage signal received from the communication unit 420 to the signal output device 5 via the positive input terminal 411 and the negative input terminal 412. As a result, bidirectional communication is realized between the clock 4 and the signal output device 5.

It will be appreciated by those skilled in the art that various changes, substitutions and modifications can be made to this without departing from the spirit and scope of the invention. For example, the above-described embodiments and modifications may be carried out in appropriate combinations within the scope of the present invention.

1 Clock 110 Exterior case 111 Terminal hole 112 Pipe 113 Protruding part 115 Surrounding part 120 Crown head 123 Opposing part 160 Secondary battery 170 Movement 2 Power supply terminal 210 Electrode support member 220 1st electrode 230 2nd electrode

Claims (9)

An exterior case with a built-in secondary battery and a terminal hole that penetrates inside and outside.
A tubular member to be gripped, which is inserted through the terminal hole and has a protruding portion protruding from the outer surface of the outer case in the inserted state.
An operating member having a shaft portion inserted into the gripped member and a head portion connected to the shaft portion outside the outer case and having a diameter larger than that of the shaft portion is provided.
The outer case has a surrounding portion that surrounds the terminal hole on the outer surface, and at least a part of the surrounding portion is electrically conductive with one of the positive electrode and the negative electrode of the secondary battery.
The head of the operating member has a facing portion facing the exterior case, and at least a part of the facing portion is electrically conductive with the other pole different from the one pole of the secondary battery. ,
At least a part of the surrounding part and at least a part of the facing part are used as charging terminals of the secondary battery.
An electronic device characterized by that. By moving the operating member in the axial direction of the shaft portion, the operating member is pushed into the outer case in a first state, and the operating member is pulled out in a direction away from the outer case. The state and the transition between the second state in which the operating member is located between the first state and the third state,
When the operating member is in the second state, at least a part of the surrounding portion and at least a part of the facing portion are used as charging terminals of the secondary battery.
The electronic device according to claim 1. When the operating member is not in the second state, at least a portion of the facing portion is electrically insulated from the other pole.
The electronic device according to claim 2. At least a part of the facing portion is in contact with at least a part of the surrounding portion in the first state.
The electronic device according to claim 2 or 3. Further provided with an elastic body built in the outer case,
When the operating member is in the second state, the elastic body causes the operating member to transition to the first state by an elastic force.
The electronic device according to claim 4. It is further equipped with a display drive unit for driving the time display unit that displays the time.
In the third state, the operating member changes the time indicated by the display driving unit by an operation of rotating the shaft portion in the circumferential direction.
The electronic device according to any one of claims 2-5. A power supply terminal for supplying power to the secondary battery of the electronic device according to any one of claims 1-6.
A non-conductive electrode support member having a substantially flat plate shape,
A first electrode provided on one surface of the electrode support member and electrically conductive to the one electrode of the secondary battery via at least a part of the surrounding portion.
A second electrode provided on the back surface of the one surface of the electrode support member and electrically conductive to the other electrode of the secondary battery via at least a part of the facing portion.
A power supply terminal characterized by being equipped with. The electrode support member has a U-shape having an opening having a minimum opening width smaller than the outer diameter of the protrusion of the member to be gripped, and can grip the protrusion.
The power supply terminal according to claim 7. The first electrode and the second electrode are leaf springs bent in a direction away from the electrode support member in the vicinity of the opening.
The power supply terminal according to claim 8.

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