JP5448178B2 - Alarm clock - Google Patents

Description

  The present invention relates to a timepiece such as a radio-controlled timepiece that automatically determines and corrects the time, and particularly relates to an alarm clock that performs an alarm operation at a set time.

  Conventionally, there has been an alarm clock with an alarm function added to a radio timepiece that automatically detects and corrects time by receiving radio waves including time information. In general, this type of timepiece has a reference hand that is manually rotated, a reference cam that rotates by the rotation of the hour hand wheel that drives the hour hand and moves up and down according to the groove of the reference wheel, and is pressed by the reference cam. A guide mechanism is provided that includes an age spring that moves up and down, and a contact plate that is in contact with the age spring.

  In the case of the alarm clock as described above, the alarm is turned on and off by moving the guide cam up and down, so there are problems such as contact contact noise, poor contact accuracy, and poor operation. It was. Further, the guide mechanism has a problem that the number of parts is large, the structure is complicated, the number of assembling steps is increased, and the cost is thereby increased.

  Therefore, there has been proposed a radio-controlled timepiece that displays an alarm time using an hour hand and a minute hand or a second hand (see, for example, Patent Document 1). In this timepiece, the alarm time is displayed by using the hour hand, the minute hand or the second hand as a reference hand in the alarm mode. By using the second hand or the like as a guide hand in this way, the guide mechanism described above can be reduced.

  However, when the alarm time is displayed with the hour hand and the minute hand, the movement of the hour hand is slow, so that there is a problem that it takes time to display the time and the alarm time. When displaying the alarm time with the second hand, one step of the second hand is 360/60 = 6 °, whereas when the alarm time set scale is 10 minutes, 360/72 = 5 °, the second hand However, there was a problem that the set scale could not be accurately pointed.

  Furthermore, if the second hand and the reference hand are used together, the reference hand can be kept stopped after setting the alarm time if only the reference hand is set. However, if the second hand is used as a second hand, it cannot be kept stopped and power consumption is reduced. Could not be suppressed.

JP 2005-233659 A

  The problem to be solved by the present invention is to solve the above-mentioned problems of the prior art, and while accurately indicating a step needle, it is possible to accurately point to the 10-minute wake-up set scale and the 5-minute wake-up set scale, It is another object of the present invention to provide an alarm clock that can quickly set an alarm time.

The alarm clock of the present invention periodically captures a time signal, corrects the current time, adjusts and stores the alarm time and detects a match with the current time, an hour hand and a minute hand for displaying the time, A reference hand for displaying the wake-up time, a first drive mechanism for driving the hour hand and the minute hand, a second drive mechanism for driving the reference hand, an input switch for inputting the wake-up time, and an informing unit for generating an alarm sound And a scale is formed at intervals of 5 ° by setting the reduction ratio of the train wheel for reducing the rotation of the motor in the second drive mechanism to 1/180 and moving the reference needle by 1 °. The time corresponding to the set scale is awakened every 10 minutes, or the reduction gear ratio of the train wheel that decelerates the rotation of the motor in the second drive mechanism is set to 1/360, and the reference hand is moved by 0.5 °. Move And performs time display corresponding to the alarm set tick marks 5 minutes graduations are formed by the alarm set scale and 2.5 ° spacing increments 10 minutes the memory is formed by at 5 ° intervals and.

The present invention is the above-described alarm clock, wherein when the speed reduction ratio of the train wheel in the second drive mechanism is set to 1/360, the number of steps of the motor is switched, and the reference hand is displayed in 10 minute increments. A hand movement switching setting unit is provided which is set to be used individually as a 5-minute increment display guide needle, or is set to be used as a guide needle capable of being displayed in 10-minute increments and 5-minute increments.

Further, the present invention provides the above-described alarm clock, wherein the changeover switch for switching the number of steps per one drive of the reference hand corresponding to one push of the input switch so as to move the hand every 30 minutes or every hour. Is provided.

Further, the present invention is the above alarm clock, wherein the control unit responds to a long press of the input switch, and switches the number of steps per drive of the reference hand corresponding to one push of the input switch. , Set to move every 30 minutes or every hour.

  In the alarm clock according to the present invention, the reduction ratio of the train wheel that drives the reference hand is set to 1/180, 1/360. For this reason, the reference needle moves 1 ° and 0.5 ° in one step, and moves 5 ° and 2.5 ° in 5 steps with one drive. Thereby, it is possible to accurately indicate the 10-minute wake-up set scale (1 scale 5 °) and the 5-minute wake-up set scale (1 scale 2.5 °). As a result, the wake-up set time can be accurately displayed with the reference hand.

  Further, when the speed reduction ratio of the train wheel is set to 1/360, the reference needle can be moved by 5 ° by performing 10 steps in one drive. For this reason, it is possible to change the hand movement angle by simply switching the number of steps without changing the mechanical structure such as the train wheel. Therefore, the type of indication (in increments of 10 minutes, increments of 5 minutes, etc.) Switching can be performed only by setting a terminal of an IC as a control unit. For this reason, it is not necessary to prepare the movement separately according to the presence / absence of the alarm function and the type of the guide display, and all the movements can be shared.

  In addition, by setting the number of steps per drive by external switching operation, when setting the wake-up time, the reference needle should be set to move every 30 minutes or every hour by operating the switch once. It is possible to set the wake-up time quickly.

It is principal part sectional drawing which shows the internal structure of the movement in the alarm clock which concerns on one Example of this invention. It is a front view which shows the dial attached to the movement shown in FIG. It is a front view which shows the other example of the dial plate shown in FIG. It is a block diagram which shows the structure of the alarm clock of this invention.

  The alarm clock according to the present invention is a timepiece that receives a radio wave including time information and automatically corrects the time by receiving a radio wave like a radio timepiece, and includes a first drive mechanism that drives an hour hand and a minute hand, and a first drive that drives a reference hand. 2 drive mechanism. This second drive mechanism is provided with a motor and a gear train for reducing the rotation of the motor, and the reduction ratio of this gear train is set to 1/180, 1/360. As a result, the reference needle is moved 1 ° or 0.5 ° in one step. When moving the needle by 1 ° in 1 step, if the reference needle is moved 5 steps, it wakes up every 10 minutes and rotates 5 ° which is one scale of the set scale. In addition, when moving the needle by 0.5 ° in one step, if the reference needle is moved by 5 steps, it is rotated by 2.5 ° which is one division of the 5-minute increment setting scale, and if it is made 10 steps, it is set by 10-minute increment. It will rotate 5 °, which is one division of the scale. As a result, by setting the reduction ratio as described above, the reference needle can be accurately adjusted to each scale. Further, by changing the number of steps per drive, it is possible to set the reference needle movement to 30 minutes, 1 hour, or the like.

  First, a schematic configuration of an alarm clock according to an embodiment of the present invention will be described with reference to a block diagram shown in FIG. The alarm clock in the present embodiment periodically receives a time signal by receiving a radio signal, etc., corrects the current time, sets and stores the alarm time, etc., and detects a match with the current time, etc. The controller 2 includes a microcomputer IC having various functions, a memory, a motor drive circuit, and the like.

  The alarm clock is provided with two systems of motors 8 and 10 and wheel trains 12 and 14 for driving the hour and minute hands 4, and the reference hand 6, respectively. Furthermore, in the present embodiment, a changeover switch 16 for switching the number of steps per one drive of the reference needle 6, an input switch 18 such as a push button for inputting a wake-up time, and an informing unit 20 for generating an alarm sound or the like. And are provided.

  Further, in the present embodiment, a hand movement switching setting unit 22 is provided for switching the reference needle 6 to be used at the time of external operation or manufacturing as a 10-minute display reference needle or a 5-minute display reference needle.

  In this embodiment, normally, when displaying the time, the control unit 2 drives the motors 8 and 10 to move the hour hand and the minute hand 4 based on the received time information, etc., and displays the hour and minute of the current time. To do. When setting the wake-up time, the reference hand 6 stops at the 12 o'clock position when the power is turned on and the like. When the input switch 18 is pressed, the reference hand 6 is moved by a predetermined angle to set and display the wake-up time. I do. The set wake-up time is stored in the memory of the control unit 2.

  The needle operating angle of the reference needle 6 in this embodiment is a step in which the reference needle 6 stops accurately on the wake-up set scale according to the reduction ratio of the wheel train 14 that decelerates the rotation of the motor 10 consisting of a step motor and the number of motors 10 driven. It is intended to move the hands.

  Next, the internal structure of the movement and the state of the hand movement will be described using the cross-sectional view of the main part of the movement in the alarm clock of this embodiment shown in FIG. 1 and the front view of the dial shown in FIGS. In FIG. 1, reference numeral 24 denotes a case, which includes an upper case 26, a lower case 28, and an intermediate plate 30, in which a drive mechanism is housed. In the case 24, a first drive mechanism 32 for driving the hour hand and the minute hand 4 (FIG. 4) and a second drive mechanism 34 for driving the reference hand 6 (FIG. 4) are housed.

  The first drive mechanism 32 transmits the rotation from the rotor 36 of the motor 8 (FIG. 4) for driving the hour hand and the minute hand 4 to the minute hand wheel 42 through the transmission wheel 38 and the third wheel 40 and through the minute wheel 44. Thus, the rotation is transmitted from the minute hand wheel 42 to the hour hand wheel 46. Further, the second drive mechanism 34 transmits the rotation from the rotor 48 of the motor 10 (FIG. 4) to the reference wheel 56 through the seventh wheel 50, the sixth wheel 52, and the fifth wheel 54.

  Reference numeral 58 denotes a circuit board, which is provided with an antenna, a microcomputer IC, and the like, and forms a control unit 2 (FIG. 4) including a circuit for driving and controlling the motors 8 and 10 (FIG. 4). Reference numerals 60 and 62 respectively denote a light receiving element and a light emitting element attached to the upper case 26 and the circuit board 58, and emits light and receives light through through holes provided in the hour hand wheel 46, the minute hand wheel 42, the reference wheel 56 and the like therebetween. Is. Based on the signals from the light receiving element 60 and the light emitting element 62, each pointer is detected to reach a predetermined position (for example, a zero return position such as 12:00) and used to grasp the position of the pointer.

  Further, the dial 64 shown in FIG. 2 is provided with a time scale 64a composed of 60 scales in the vicinity of the outer periphery thereof, and a 10-minute wake-up set scale 64b composed of 72 scales is provided on the inside thereof. ing. The time scale 64a is circularly arranged at an equal interval of 360/60 = 6 °. Further, the 10-minute wake-up set scale 64b is circularly arranged at an equal interval of 360/72 = 5 °.

  Further, the dial 66 shown in FIG. 3 is provided with a time scale 66a identical to the time scale 64a of the dial 64 and a 5-minute wake-up set scale 66b. The 5-minute wake-up set scale 66b has 72 outer scales 66c having the same scale as the 10-minute wake-up set scale 64b of the dial 64, and is shifted by 2.5 ° to the outer scale 66c immediately inside. The inner graduation 66d is circularly arranged at equal intervals at an angle of 5 °. There are a total of 144 outer scales 66c and inner scales 66d, and the distance between them is 360/144 = 2.5 °.

  To move the dial 64 having the above-described structure every 10 minutes, so that the reference needle 6 (FIG. 4) points accurately, the reference needle 6 must be set so that it can be moved by 5 °. is necessary. In the present embodiment, the rotor 48 is rotated 180 ° by one drive, and is decelerated by setting the gear ratio of the train wheel in the second drive mechanism 34 to 1/180. The number of steps is set to 1 °. Then, the guide needle 6 is moved 5 degrees by moving the guide needle 1 step by 1 step for 5 steps, and the guide needle 6 is stopped at the set scale 64b in steps of 10 minutes. It is configured to do.

  Further, in order to move the wake-up set scale 66b of the dial 66 in increments of 5 minutes so that the guide needle 6 points with high accuracy, it is necessary to set the guide needle 6 so that the hand can be moved by 2.5 °. . In this case, in this embodiment, the speed reduction ratio of the train wheel in the second drive mechanism 34 is set to 1/360, so that one step of the reference needle 6 is set to 0.5 °. Then, the guide needle 6 is moved by 2.5 ° by moving the guide needle 6 by 0.5 step by one step, so that the guide needle 6 stops at the set scale 66b in steps of 5 minutes. It is composed.

  Further, when the one step of the reference needle 6 is set to 0.5 °, the reference needle 6 can be moved by 5 ° by 10 steps, and thereby, the setting scale 64b (the outer scale 66c) is ticked every 10 minutes. Only), the guide needle 6 can be stopped with high accuracy.

  As described above, in the present embodiment, the speed reduction ratio of the train wheel in the second drive mechanism 34 is set to 1/180 or 1/360 so that the hand movement of 1 ° or 0.5 ° is performed in one step. It can be configured to move the reference needle 6 by 5 ° or 2.5 ° in increments of 5 ° or 2.5 ° and stop it accurately at the scale position by simply switching and controlling the number of steps in the controller 2 (FIG. 4). It becomes.

  That is, if the reduction ratio is 1/180 and the needle movement is 1 ° per step, if the input switch 18 is pushed one step at a time by 5 steps, the reference needle 6 moves 5 ° at a time and the set scale 64b is awakened every 10 minutes. Point exactly.

  In addition, if the reduction ratio is 1/360 and the needle movement is 0.5 ° per step, if the input switch 18 is pushed one step at a time by 5 steps, the reference needle 6 moves 2.5 ° at a time and the wake-up is performed every 5 minutes. The set scale 66b is accurately indicated.

  Furthermore, in the case of 0.5 ° movement per step at a reduction ratio of 1/360, the reference needle 6 can be moved by 5 ° by moving the input switch 18 by 10 steps by one push. It is possible to move the hand while accurately pointing to the setting scale 64b or the outer scale 66c every 10 minutes.

  In the present embodiment, the reference needle 6 can be set to be used individually as a 10-minute display reference needle or a 5-minute display reference needle by switching the hand movement switching setting unit 22, It can be set to be used as a reference hand that can be displayed in 5-minute increments.

  Further, in this embodiment, by switching the changeover switch 16, the number of steps per one drive of the reference needle 6 can be switched so that the hand can be moved every 30 minutes or every hour. For example, in the wake-up setting scale 64b in increments of 10 minutes, when the input switch 18 is pushed by 1 at the time of normal wake-up setting, if the needle moves in 1 step 1 °, the reference needle 6 is moved 5 ° by 5 steps, and 10 minutes. The reference needle 6 advances by one scale of the knitting alarm set scale 64b. By switching the changeover switch 16, the input switch 18 is pushed once to make 15 steps by moving the reference needle 6 by 15 °, and is switched so that the setting scale 64 b is advanced every 3 minutes. As a result, the guide needle 6 can be advanced by 30 minutes each time the input switch 18 is pushed once, and at this time, the guide needle 6 always stops at a position corresponding to the scale.

  Similarly, in order to move the hand for one hour by one push of the input switch 18 by switching the changeover switch 16, when the reference needle 6 is moved by 1 step 1 °, it is made 30 steps and the alarm is set every 10 minutes. It can be set to advance by 6 scales.

  Further, when the reference needle 6 moves at 0.5 ° in one step, it can be moved 15 ° by 30 steps with one push of the input switch 18, and it can be moved in increments of 5 minutes and the 6 scales of the set scale 66b. It can be sent for 30 minutes. Similarly, in order to move the hand for one hour, the input switch 18 is moved 60 steps by one push of the input switch 18 and the needle is moved 30 degrees to advance by 12 scales of the set scale 66b.

  As described above, by increasing the hand movement angle of the reference needle 6 to 30 minutes or 1 hour by one push of the input switch 18, it is not necessary to push many input switches 18, and the alarm time is set easily and quickly. be able to. When the operation of the input switch 18 is stopped, the reference needle 6 always stops at a position corresponding to the scale.

  Further, without providing the changeover switch 16, the reference needle 6 may be set to advance by 30 minutes or 1 hour by long-pressing the input switch 18 (for example, 2 seconds or more).

2 Control unit 4 Hour hand and minute hand 6 Reference needle 8, 10 Motor 12, 14 Wheel train 16 Changeover switch 18 Input switch 20 Notification unit 22 Hand movement change setting unit 24 Case 26 Upper case 28 Lower case 30 Middle plate 32 First drive mechanism 34 Second drive mechanism 36 Rotor 38 Transmission wheel 40 Third wheel 42 Minute hand wheel 44 Hour hand wheel 46 Hour hand wheel 48 Rotor 50 Seventh wheel 52 Sixth wheel 54 Fifth wheel 56 Reference wheel 58 Circuit board 60 Light receiving element 62 Light emitting element 64, 66 Dial 64a, 66a Time scale 64b 10 minute increment wake set scale 66b 5 minute increment wake set scale 66c Outer scale 66d Inner scale

Claims (2)

A control unit that periodically captures the time signal, corrects the current time, sets and stores the wake-up time, and detects a match with the current time;
An hour and minute hands for displaying the time,
A reference hand that displays the alarm time,
A first drive mechanism for driving the hour hand and the minute hand;
A second drive mechanism for driving the reference needle;
An input switch for inputting the alarm time,
An alarm unit for generating an alarm sound,
Set the reduction ratio of the train wheel that decelerates the rotation of the motor in the second drive mechanism to 1/180, and move the reference needle by 1 ° at a time so that a scale is formed at intervals of 5 ° and set in 10 minute increments. By displaying the time corresponding to the scale, or by setting the reduction ratio of the train wheel that decelerates the rotation of the motor in the second drive mechanism to 1/360 and moving the reference hand by 0.5 °, 5 An alarm clock that displays a time corresponding to a 10-minute alarm set scale in which a scale is formed at intervals of ° and a 5-minute alarm set scale in which a scale is formed at intervals of 2.5 °;
When the speed reduction ratio of the train wheel in the second drive mechanism is set to 1/360, the number of steps of the motor is switched, and the reference needle is used individually as a 10-minute display reference needle or a 5-minute display reference needle. Or a hand movement switching setting unit that is set to be used as a reference needle capable of displaying in 10-minute increments and 5-minute increments;
An alarm clock, comprising: a changeover switch for changing over the number of steps per one drive of the reference hand corresponding to one push of the input switch so as to move the hand every 30 minutes or every hour. A control unit that periodically captures the time signal, corrects the current time, sets and stores the wake-up time, and detects a match with the current time;
An hour and minute hands for displaying the time,
A reference hand that displays the alarm time,
A first drive mechanism for driving the hour hand and the minute hand;
A second drive mechanism for driving the reference needle;
An input switch for inputting the alarm time,
An alarm unit for generating an alarm sound,
Set the reduction ratio of the train wheel that decelerates the rotation of the motor in the second drive mechanism to 1/180, and move the reference needle by 1 ° at a time so that a scale is formed at intervals of 5 ° and set in 10 minute increments. By displaying the time corresponding to the scale, or by setting the reduction ratio of the train wheel that decelerates the rotation of the motor in the second drive mechanism to 1/360 and moving the reference hand by 0.5 °, 5 An alarm clock that displays a time corresponding to a 10-minute alarm set scale in which a scale is formed at intervals of ° and a 5-minute alarm set scale in which a scale is formed at intervals of 2.5 °;
When the speed reduction ratio of the train wheel in the second drive mechanism is set to 1/360, the number of steps of the motor is switched, and the reference needle is used individually as a 10-minute display reference needle or a 5-minute display reference needle. Or a hand movement switching setting unit that is set to be used as a reference needle that can be displayed in 10-minute increments and 5-minute increments,
The control unit responds to a long press of the input switch and switches the number of steps per one drive of the reference needle corresponding to one push of the input switch, so that the hand is moved every 30 minutes or every hour. An alarm clock characterized by that.

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