Radio-controlled clock repeater

Abstract

To provide a radio clock repeater that can be attached in position by a single hand without losing components.SOLUTION: A radio clock repeater comprises: a slave unit body 21 that outputs a pseudo-standard radio wave; a slave unit casing 12 in which the slave unit body 21 is housed; a fastener 13 which is provided at the slave unit casing 12 and fastens the slave unit casing 12 to a wall surface fixture F; and a fixture 16D for fixing a radio clock C to the front of the slave unit casing 12. The fastener 13 includes a plate body 14 formed with a wall-hanging hole 14A into which a tip Ft of the wall surface fixture F is inserted, and a lock member 15 which is located below the wall-handing hole 14A and prevents the tip Ft from coming off. The lock member 15 includes a leaf spring member 15A fixed to the plate body 14, and a non-fixing part 15B attached to the leaf spring member 15A and capable of coming close to or separating from the wall-handling hole 14A. The non-fixing part 15B is biased to be in a state of being close to the wall-hanging hole 14A.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present disclosure relates to a radio clock repeater capable of outputting a pseudo standard radio wave for a radio clock.

Background Art

[0002] Patent Documents 1 and 2 disclose a radio clock repeater that outputs a pseudo standard radio wave (hereinafter referred to as a pseudo standard radio wave) having the same specifications as the standard radio wave for a radio clock. This radio clock repeater acquires time information via, for example, the Internet or the like, and transmits a pseudo standard radio wave based on this time information to a radio clock installed in a location where it is difficult to receive the standard radio wave.

[0003] The radio clock repeater includes a hanger on a casing that houses a main body for outputting a pseudo standard radio wave. The hanger is hooked on the tip of a wall mount fixed to the wall surface. The radio clock repeater also includes a latch member that suppresses the tip of the wall mount from passing through the wall mounting hole. This latch member is located below the tip of the wall mount hooked in the wall mounting hole, and is attached to the casing straddling the wall mounting hole in the horizontal direction.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, wall-mounted radio clocks are generally placed at a high position on the wall so that they can be visually observed from a distance. Therefore, when attaching the radio clock repeater to the wall, it is necessary to hold the radio clock repeater by hand and climb up a ladder or a step stool to perform the operation of hanging the wall mounting hole on the tip of the wall mount.

[0006] Here, the radio-controlled clock repeaters disclosed in Patent Documents 1 and 2 are equipped with a latching member that prevents the tip of the wall mounting bracket from coming out of the wall mounting hole. Since the latching member is formed as a separate component from the casing, it is necessary to hold the casing with one hand and the latching member with the other hand while working. For this reason, the workability of installing the radio-controlled clock repeater is poor when working on an unstable ladder or stepladder, and there is a risk of dropping and losing the latching member.

[0007] The objective of one embodiment of this invention is to provide a radio-controlled clock repeater that can be easily installed with one hand without losing any parts. [Means for solving the problem]

[0008] One embodiment of the present invention comprises a main body that outputs a pseudo-standard radio wave, a casing that houses the main body, a fastening device provided on the casing for fastening the casing to a wall mounting fixture fixed to a wall surface, and a mounting fixture for fixing the radio-controlled clock to the front of the casing opposite the wall surface so that the casing overlaps the radio-controlled clock, wherein the fastening device comprises a plate body having a wall mounting hole into which the tip of the wall mounting fixture is inserted, and a locking member located below the wall mounting hole to prevent the tip of the wall mounting fixture from coming off, wherein the locking member comprises a fixing part fixed to the plate body and an attachment to the fixing part, By moving along the surface of the plate It comprises a non-fixed part that can move towards and away from the wall mounting hole, and the non-fixed part is biased to be in a state close to the wall mounting hole. The non-fixed portion is provided with a projection that moves the non-fixed portion in a direction away from the wall-mounting hole against a biasing force. It is characterized by the fact that... [Effects of the Invention]

[0009] According to one embodiment of the present invention, by holding the casing in one hand and using the fingertips to move the non-fixed portion away from the wall mounting hole, the tip of the wall mounting bracket can be inserted into the wall mounting hole. Furthermore, by releasing the fingertips from the non-fixed portion, the non-fixed portion can be biased and brought closer to the wall mounting hole. As a result, the radio-controlled clock repeater can be easily attached to the wall with one hand while being secured to the wall mounting bracket. Moreover, since the non-fixed portion is provided on the plate body via the fixed portion, loss can be prevented. [Brief explanation of the drawing]

[0010] [Figure 1] This is an overall configuration diagram showing a radio-controlled clock repeater according to an embodiment of the present invention. [Figure 2] This is a block diagram showing the configuration of the master unit. [Figure 3] Figure 1 is a front view showing the sub-unit. [Figure 4] This is a perspective view showing a wall-mounted sub-unit and radio-controlled clock. [Figure 5] This is a block diagram showing the configuration of the sub-unit. [Figure 6] This is a right-side view of the handset. [Figure 7] This is a front view showing the sub-unit with the locking mechanism exposed. [Figure 8] Figure 7 is a perspective view showing the plate body, locking member, mounting holes, etc. [Figure 9] This is an explanatory diagram showing the tip of the wall mounting bracket positioned in the mounting hole of the plate. [Figure 10] This is an explanatory diagram showing the state in which the tip of the wall mounting bracket is positioned in the wall mounting hole of the plate. [Modes for carrying out the invention]

[0011] Hereinafter, a radio-controlled clock repeater according to an embodiment of the present invention will be described in detail with reference to Figures 1 to 10.

[0012] As shown in FIG. 1, the radio clock repeater includes a master unit 1 that transmits a time information signal (standard radio wave data) corresponding to the standard time, and a slave unit 11 that receives the time information signal from the master unit 1 and outputs a pseudo standard radio wave. In this embodiment, the slave unit 11 is described as the radio clock repeater. However, when the master unit has a receiving function for the time information signal and an output function for the pseudo standard radio wave, the master unit can be used as the radio clock repeater.

[0013] The master unit 1 includes a box-shaped master unit casing 2. As shown in FIG. 2, the master unit 1 includes a master real-time clock 3 (hereinafter referred to as the master RTC 3), a main power supply unit 4, a wireless module 5, and a master controller 8. The master RTC 3, the wireless module 5, and the master controller 8 are housed inside the master unit casing 2. In addition to this, the master unit 1 includes a time setting unit 6 and a display unit 7.

[0014] The master RTC 3 is configured using, for example, a crystal oscillator or the like and measures time. The master RTC 3 is connected to the master controller 8. Power is supplied to the master RTC 3 from the main power supply unit 4 via the master controller 8. Therefore, when the main power supply unit 4 is connected to a commercial AC power supply, the master RTC 3 is driven by the power supplied from the main power supply unit 4. The master RTC 3 obtains the current time based on the input initial time. The master RTC 3 outputs a signal corresponding to the current time to the master controller 8.

[0015] Also, the master RTC 3 is connected to a backup power supply 3A composed of, for example, a button-type battery, a capacitor, or the like. Thereby, even when the power supply from the main power supply unit 4 is temporarily stopped, the master RTC 3 continues to be driven by the power supply from the backup power supply 3A and continues to keep time.

[0016] Even for a device that operates on a commercial AC power supply, the time is generally managed using an RTC (Real-Time Clock). The RTC has an error in time due to the surrounding environment (mainly temperature). To avoid this error, the master unit RTC3 incorporates a correction function. Specifically, the master unit RTC3 adds 1 second when the frequency clock of a reference oscillator (e.g., 32.768 kHz) reaches a "predetermined count number", and adds 1 second at "predetermined count number + set value" only once every 20 seconds. Thereby, the master unit RTC3 corrects the time count.

[0017] The main power supply unit 4 is connected to the master unit controller 8. The main power supply unit 4 supplies power to the master unit controller 8. The main power supply unit 4 includes a power adapter 4A, an AC-DC conversion circuit 4B, and a low-voltage power supply circuit 4C. The power adapter 4A is constituted by, for example, a plug and is connected to a commercial AC power outlet (not shown). The power adapter 4A supplies the AC power of the commercial power supply to the AC-DC conversion circuit 4B. The AC-DC conversion circuit 4B is constituted by various converter circuits and converts the AC power into DC power. The low-voltage power supply circuit 4C converts the voltage of the DC power supplied from the AC-DC conversion circuit 4B into a constant low voltage (e.g., 3.3V) required by the master unit controller 8. The low-voltage power supply circuit 4C is constituted by, for example, various DC-DC converter circuits. The low-voltage power supply circuit 4C supplies the low-voltage DC power to the master unit controller 8.

[0018] Also, the main power supply unit 4 includes an AC signal extraction circuit 4D. The AC signal extraction circuit 4D detects the AC voltage of the commercial power supply output from the power adapter 4A and outputs a signal corresponding to this AC voltage to the master unit controller 8. The main power supply unit 4, excluding the power adapter 4A, is housed within the master unit casing 2. That is, the AC-DC conversion circuit 4B, the low-voltage power supply circuit 4C, and the AC signal extraction circuit 4D are housed within the master unit casing 2.

[0019] Wireless module 5 constitutes the master unit's communication section. Wireless module 5 of master unit 1 performs LPWA (Low Power Wide Area-network) wireless communication with wireless module 24 of slave unit 11. Wireless module 5 uses, for example, the LoRa communication method in the 920MHz band. This makes wireless module 5 relatively resistant to interference and enables long-distance communication. Wireless module 5 transmits or receives radio waves in the 920MHz band from an antenna (not shown). Because it uses radio waves in the 920MHz band, it has high reception sensitivity, is resistant to building walls and other obstacles, and enables communication even in complex indoor environments.

[0020] The time setting unit 6 is mounted on the front of the master unit casing 2. The time setting unit 6 is composed of, for example, multiple button switches and is connected to the master unit controller 8. The time setting unit 6 is used to set the initial time of the master unit 1. Specifically, the time setting unit 6 has switches to advance or retract the initial time. For example, when starting the master unit 1 for the first time, or when the master unit 1 has not been powered on for a long period of time, the user uses the time setting unit 6 to set the initial time of the master unit 1.

[0021] The display unit 7 is mounted on the front of the master unit casing 2. The display unit 7 is composed of, for example, a 7-segment LED, a single-color chip LED, or a full-color LED, and is connected to the master unit controller 8. The display unit 7 displays, for example, the current time, the initial time, etc. The display unit 7 also lights up as an error indicator when a malfunction occurs in the master unit 1 or the like.

[0022] The master controller 8 is configured by, for example, a My Computer. The master controller 8 operates according to a program stored in memory 8A. The master controller 8 corrects the time based on the master RTC3 based on the voltage signal of the commercial AC power supply.

[0023] The frequency of commercial AC power is precisely controlled by the power company. Therefore, when the voltage signal of commercial AC power is used as the oscillator circuit for a clock, it does not generate a constant "error / month" like a quartz crystal oscillator, and the cumulative error can be maintained within a range of ±10 seconds throughout the year. Consequently, from a long-term perspective, time management using AC power synchronization without using an RTC is more accurate. Therefore, when the master controller 8 is powered by commercial AC power, it periodically calculates the deviation between the master RTC 3 and the AC synchronization time. Based on this deviation, the master controller 8 changes the correction setting value of the master RTC 3. As a result, the master controller 8 can obtain accurate time information using the master RTC 3.

[0024] Furthermore, the master unit 1 is not limited to acquiring time information using the master unit RTC3. The master unit 1 may be connected to the internet by wire or wireless connection, similar to the radio clock repeater disclosed in Japanese Patent Application Publication No. 2010-183501, and may acquire time information via the internet.

[0025] The master controller 8 is connected to the standard radio wave data setting circuit 9. The master controller 8 outputs accurate time information acquired using the master RTC3, etc., to the standard radio wave data setting circuit 9. The standard radio wave data setting circuit 9 sets the time code, which will be the data for the pseudo-standard radio wave, based on the time information input from the master controller 8. The time code includes time information such as year, month, day, hour, and minute. The standard radio wave data setting circuit 9 outputs the set standard radio wave data (time code) to the master controller 8.

[0026] The master controller 8 is normally in a sleep state. The master controller 8 starts up at a predetermined start date and time D10 and waits for a call signal from the slave unit 11. When the master controller 8 receives a call signal from the slave unit 11, it establishes communication with the slave unit 11 and transmits standard radio wave data as a time information signal to the slave unit 11 using the wireless module 5.

[0027] As shown in Figures 3 to 6, the slave unit 11 has a slave unit body 21 that receives a time information signal corresponding to standard time transmitted from the master unit 1 and outputs a pseudo-standard radio wave. As shown in Figure 5, the slave unit body 21 includes a slave unit real-time clock 22 (hereinafter referred to as slave unit RTC 22), a power supply unit 23, a wireless module 24, a pseudo-standard radio wave output unit 25, and a slave unit controller 30. The slave unit body 21 is housed in a slave unit casing 12. In addition, the slave unit 11 includes a display unit 26 and a setting unit 27.

[0028] The slave unit 21 only needs to receive a time information signal and output a pseudo-standard radio wave; for example, the power supply unit 23 may be omitted. In this case, the power supply unit 23 is located outside the slave unit casing 12, and the slave unit RTC 22, wireless module 24, pseudo-standard radio wave output unit 25, and slave unit controller 30 are driven by power supplied from the power supply unit 23.

[0029] The slave RTC22 is configured in much the same way as the master RTC3. Therefore, the slave RTC22 is configured using, for example, a crystal oscillator to measure time. The slave RTC22 is connected to the slave controller 30. Power is supplied to the slave RTC22 from the power supply unit 23 via the slave controller 30. Therefore, the slave RTC22 is driven by the power supplied from the power supply unit 23. The slave RTC22 determines the current time based on the initial time input by the time setting unit (not shown) of the slave 11. The initial time of the slave RTC22 does not necessarily have to be set by the slave 11; it may be set by the master 1 using communication between the master 1 and the slave 11. The slave RTC22 outputs a signal corresponding to the current time to the slave controller 30. In addition, the slave RTC22 also has a correction function to correct errors, similar to the master RTC3. In addition, the RTC22 slave unit may also be connected to a backup power supply, such as a button cell battery or capacitor, similar to the RTC3 master unit.

[0030] The power supply unit 23 is connected to the slave controller 30. The power supply unit 23 supplies power to the slave controller 30. The power supply unit 23 includes a battery unit 23A, an over-discharge protection circuit 23B, a power switch 23C, a battery voltage confirmation circuit 23D, and a regulator 23E.

[0031] The battery unit 23A comprises, for example, multiple batteries (not shown) connected in series with each other. The battery unit 23A has a socket (not shown) for housing the multiple batteries. The battery unit 23A supplies power to the slave controller 30 via an over-discharge protection circuit 23B and a regulator 23E. The over-discharge protection circuit 23B protects the batteries from over-discharge. The regulator 23E converts the output voltage from the battery unit 23A to a constant low voltage (e.g., 3.3V) required by the slave controller 30. The power switch 23C is connected to the over-discharge protection circuit 23B. When the power switch 23C is ON, power is supplied from the battery unit 23A to the slave controller 30. When the power switch 23C is OFF, the power supply from the battery unit 23A to the slave controller 30 is cut off. The battery voltage check circuit 23D is connected to the over-discharge protection circuit 23B and the slave controller 30. The battery voltage confirmation circuit 23D detects the output voltage from the battery unit 23A and outputs the detection signal to the over-discharge protection circuit 23B and the slave controller 30.

[0032] Wireless module 24 constitutes the slave-side communication unit. Wireless module 24 is configured similarly to wireless module 5. Wireless module 24 of slave unit 11 performs LPWA wireless communication with wireless module 5 of master unit 1. Wireless module 24 uses, for example, the LoRa communication method in the 920MHz band. Wireless module 24 transmits or receives radio waves in the 920MHz band from an antenna (not shown).

[0033] While the present invention assumes that LPWA wireless communication is used between the master unit 1 and the slave unit 11, the present invention is not limited to this. For example, the master unit 1 and the slave unit 11 may be configured to use various wireless communication methods, including Bluetooth®, BLE, etc.

[0034] The pseudo-standard radio wave output unit 25 includes a standard radio wave output circuit 25A, a coil 25B, and a capacitor 25C. The standard radio wave output circuit 25A is connected to the slave controller 30. The standard radio wave output circuit 25A modulates the time code (standard radio wave data) input from the slave controller 30 to a carrier signal of, for example, 40kHz, and supplies it to the coil 25B. The coil 25B constitutes an antenna coil. The coil 25B is a small inductor with a diameter of about 5 to 10 mm (e.g., 7 mm) and an axial length of about 8 to 15 mm (e.g., 10 mm). The coil 25B and the capacitor 25C are mounted on the control circuit board 25D and connected in parallel to each other (see Figure 5). At this time, the coil 25B and the capacitor 25C constitute a resonant circuit with a Q value of 40kHz. The coil 25B radiates a pseudo-standard radio wave (pseudo-standard radio wave) of 40kHz based on the signal supplied from the standard radio wave output circuit 25A. Therefore, the pseudo-standard radio wave output unit 25 can efficiently radiate a 40kHz pseudo-standard radio wave from the coil 25B with low power consumption.

[0035] Furthermore, the pseudo-standard time signal output unit 25 is not limited to outputting a pseudo-standard time signal at 40 kHz; it may also output a pseudo-standard time signal at 60 kHz. Additionally, the frequency of the pseudo-standard time signal may be configured to be either 40 kHz or 60 kHz.

[0036] As shown in Figure 3, the receiving antenna A of the radio-controlled clock C, which receives standard radio waves, tends to be located in the central part of the radio-controlled clock C in the left-right direction. Taking this into consideration, the coil 25B is located in the central part of the slave unit casing 12 in the left-right direction. That is, the coil 25B is located in approximately the same position as the mounting bracket 16D of the adjuster mechanism 16 in the left-right direction of the slave unit casing 12. On the other hand, the wall mounting hole of the radio-controlled clock C is located in the central part of the radio-controlled clock C in the left-right direction. As a result, when the slave unit 11 is attached to the back of the radio-controlled clock C, the coil 25B is located in a position close to the receiving antenna A of the radio-controlled clock C. As a result, the receiving antenna A of the radio-controlled clock C has high sensitivity to the pseudo-standard radio waves from the coil 25B. In addition, the coil 25B is located in the upper part of the slave unit casing 12.

[0037] The display unit 26 is mounted on the front of the slave unit casing 12. The display unit 26 is composed of, for example, a single-color chip LED or a full-color LED. The display unit 26 is composed of, for example, two LEDs and is connected to the slave unit controller 30. The display unit 26 lights up according to the current state (status) of the slave unit 11. Specifically, the display unit 26 switches between being off, lit, blinking, and changing its color depending on whether it is in sleep mode, driving mode, communication status with the master unit 1, error mode, etc.

[0038] The setting unit 27 is mounted, for example, adjacent to the display unit 26. The setting unit 27 is composed of, for example, a rotary switch and is connected to the slave unit controller 30. The setting unit 27 sets the number of the slave unit 11 by operating the rotary switch. This allows the master unit 1 to individually identify each of the slave units 11 and transmit standard radio wave data to them, even when multiple slave units 11 communicate with a single master unit 1.

[0039] The access switch 28 is mounted, for example, below the display unit 26 and connected to the slave unit controller 30. When the access switch 28 is pressed, the master unit 1 is notified of the slave unit number corresponding to the setting unit 27 of the slave unit 11, and the slave unit 11 is registered with the master unit 1.

[0040] The power switch 23C is mounted, for example, below the setting unit 27 and connected to the slave unit controller 30. Pressing the power switch 23C starts the slave unit 11. This causes the slave unit controller 30 to execute the program stored in memory 30A.

[0041] The slave controller 30 is a slave control means that controls the wireless module 24 and the pseudo-standard radio wave output unit 25. The slave controller 30 is configured by, for example, a personal computer. The slave controller 30 is driven according to a program stored in memory 30A. The slave controller 30 corrects the time based on the slave RTC 22 based on standard radio wave data from the master controller 8. As a result, the slave controller 30 can obtain accurate time information using the slave RTC 22.

[0042] The slave controller 30 is connected to the pseudo-standard time signal output unit 25. The slave controller 30 outputs accurate time information acquired using the slave RTC 22 to the pseudo-standard time signal output unit 25. Based on the acquired time information, the pseudo-standard time signal output unit 25 generates a pseudo-standard time signal signal in which the time code (standard time signal data) is modulated, and emits the pseudo-standard time signal from the coil 25B.

[0043] The slave controller 30 is normally in a sleep state. The slave controller 30 starts up at a predetermined start date and time D11 and sends a call signal to the master controller 8. When communication is established between the slave 11 and the master 1 based on the call signal, the master controller 8 transmits the standard radio wave data obtained from the standard radio wave data setting circuit 9 to the slave 11 using the wireless module 5. When the slave controller 30 receives the standard radio wave data using the wireless module 24, it corrects the time based on the slave RTC 22 based on the standard radio wave data. After that, the slave controller 30 goes back into sleep state and waits until a predetermined start time Ts.

[0044] When the start time Ts arrives, the slave controller 30 outputs accurate time information acquired using the slave RTC 22 to the pseudo-standard time signal output unit 25 from the start time Ts to the end time Te. As a result, the slave unit 11 emits a pseudo-standard time signal from the coil 25B from the start time Ts to the end time Te. The pseudo-standard time signal may be output continuously from the start time Ts to the end time Te, or intermittently at regular intervals.

[0045] Since the master unit 1 is connected to the commercial AC power supply, it may be kept running at all times. However, to reduce power consumption, it is preferable that the master unit 1 is run only for the necessary time from the start date and time D10. Note that the start date and time D10 of the master unit 1 is the same day as the start date and time D11 of the slave unit 11. However, to allow for time errors caused by the slave unit RTC22, the start date and time D10 is set a few minutes earlier (for example, about 5 minutes) than the start date and time D11. As a result, when the slave unit 11 transmits a call signal, the master unit 1 is running.

[0046] The start time Ts and end time Te are set so that the time between them includes the time when the radio-controlled clock C receives a standard radio signal and corrects its time. Generally, the radio-controlled clock C receives a standard radio signal and corrects its time between 2:00 AM and 3:30 AM. For this reason, the start time Ts is set to, for example, around 1:55 AM, and the end time Te is set to, for example, around 3:35 AM. Also, the startup date and time D11 of the slave unit 11 is set to, for example, one hour before the start time Ts.

[0047] The startup dates and times D10 and D11 are set to a predetermined interval of days, for example, between the 1st and 30th of the month. Specifically, the startup dates and times D10 and D11 are set to an interval of, for example, two weeks (14 days). Therefore, for example, if the startup date and time D11 of the slave unit 11 is around 0:50 AM on January 1st, the master unit 1 will start up around 0:45 AM on January 1st as the startup date and time D10. The next day on which the master unit 1 and slave unit 11 will start up (the next startup date) is two weeks later, on January 15th. The startup dates and times D10 and D11, the start time Ts, and the end time Te may be changed as appropriate according to the user's request or the specifications of the radio clock C. In this embodiment, the master unit 1 is called from the slave unit 11, but the configuration may also be such that the master unit 1 calls the slave unit 11.

[0048] In this embodiment, the example given is that the interval between activations of the slave unit 11 is two weeks, but the present invention is not limited to this. For example, the interval between activations of the slave unit 11 may be any number of days from one to thirteen, or any number of days from fifteen to thirty. The interval between activations of the slave unit 11 is set appropriately, taking into consideration the time accuracy of the radio-controlled clock C and the power consumption of the slave unit 11. In addition, if the radio-controlled clock C receives a standard radio wave during the daytime to correct the time, the start time Ts and end time Te may be set so that it transmits a pseudo-standard radio wave for that time.

[0049] As shown in Figures 3, 4, 6 through 10, the slave unit 11 of the radio-controlled clock repeater is equipped with a slave unit casing 12, a fastener 13, and an adjuster mechanism 16. The slave unit casing 12, as a casing, is formed in the shape of a thin box having a predetermined thickness and is composed of a rear case section 12A and a front case section 12B. The rear case section 12A is formed, for example, from a rectangular plate and the edges around the plate, with the front side opposite the wall W being open. The front case section 12B is provided facing the front side of the rear case section 12A. The front case section 12B is formed, for example, from a rectangular plate and the edges around the plate, similar to the rear case section 12A, with the rear side facing the wall W being open.

[0050] The rear case section 12A and the front case section 12B are attached to each other by screws or the like with their openings facing each other. As a result, the rear case section 12A and the front case section 12B are formed into a thin box shape, and the slave unit body 21, consisting of a slave unit RTC 22, power supply unit 23, wireless module 24, pseudo-standard radio wave output unit 25, slave unit controller 30, etc., is housed inside. The rear case section 12A and the front case section 12B are formed into the desired shape using resin material. A plate 14, described later, is integrally formed on the upper side of the rear case section 12A, and an adjuster mechanism 16, described later, is integrally formed on the upper side of the front case section 12B.

[0051] A window section 12C is formed in the central part of the front case section 12B. The window section 12C is made up of, for example, a rectangular through-hole. Inside the window section 12C, the power switch 23C, display section 26, setting section 27, access switch 28, etc., are exposed.

[0052] The fastening device 13 is integrally provided on the upper part of the rear case portion 12A that constitutes the sub-unit casing 12. In other words, the fastening device 13 is integrally molded with the rear case portion 12A using a resin material. The fastening device 13 comprises a plate body 14 into which a wall mounting hole 14A is formed, into which the tip portion Ft of the wall mounting bracket F is inserted, and a locking member 15 located below the wall mounting hole 14A to prevent the tip portion Ft of the wall mounting bracket F from coming off. The fastening device 13 is provided on the plate body 14 and further comprises a mounting hole 14D located below the wall mounting hole 14A and continuous with the wall mounting hole 14A.

[0053] As shown in Figures 7 to 10, the plate 14 is formed as a rectangular flat plate extending upward from the top of the rear case portion 12A. The plate 14 is also formed using the same resin material as the rear case portion 12A and has edges around its periphery, similar to the rear case portion 12A, to ensure rigidity. The plate 14 has a wall mounting hole 14A into which the tip Ft of the wall mounting bracket F is inserted. The wall mounting bracket F is attached to the wall (wall surface W) of the building. The wall mounting bracket F is made of, for example, a metal plate and has a hook-shaped tip Ft formed by folding a narrow plate portion that extends downward upward. Note that the shape of the plate 14 is not limited to a rectangle, and various shapes can be selected.

[0054] The wall mounting hole 14A is located near the center in the left-right direction, towards the upper side of the plate body 14. The upper part of the wall mounting hole 14A has an Ω shape, consisting of a straight section 14B extending horizontally and a circular section 14C protruding upward in a circular shape. The straight section 14B can stably engage with the tip Ft of the wall mounting fixture F, which is formed by bending a metal plate, over a wide area. On the other hand, the circular section 14C can stably engage with the wall mounting fixture if a cylindrical object such as a screw or nail is used as the wall mounting fixture, by fitting this cylindrical object into it. Moreover, the wall mounting hole 14A has a small opening area, just large enough to accommodate the tip Ft of the wall mounting fixture F (just enough to fit with a small gap). Therefore, the tip Ft of the wall mounting fixture F engages stably with the wall mounting hole 14A without rattling. As a result, the hook 13 can fix the sub-unit 11 to the wall W in a hooked state. Note that the wall mounting hole 14A is not limited to a pentagonal shape; it may also be triangular, rhombus, or polygonal. The wall mounting hole 14A may also be circular or elliptical.

[0055] The plate body 14 has a mounting hole 14D located below the wall mounting hole 14A and continuous with the wall mounting hole 14A. The plate body 14 has a movable space 14E located to the upper right of the mounting hole 14D, which is continuous with the mounting hole 14D and allows the non-fixed portion 15B of the locking member 15 (described later) to move in the left-right direction. The mounting hole 14D is separated from the movable space 14E by a leaf spring member 15A (described later), and is formed as, for example, a pentagonal through-hole (opening) (the area shown by the dashed line in Figure 7). Furthermore, the plate body 14 has a dividing portion 14F at the boundary between the mounting hole 14D, which is the uppermost part of the pentagonal mounting hole 14D, and the wall mounting hole 14A. The mounting hole 14D has a larger opening area than the wall mounting hole 14A. As a result, the tip Ft of the wall mounting fixture F can be easily inserted into the mounting hole 14D, which has a larger opening area.

[0056] Furthermore, the plate body 14 is equipped with a guide portion 14G that guides the tip Ft of the wall mounting bracket F from the mounting hole 14D toward the wall mounting hole 14A. This guide portion 14G extends diagonally toward the dividing portion 14F. The guide portion 14G, together with the leaf spring member 15A and the inclined portion 15B2 of the non-fixed portion 15B, forms a V-shape. As a result, when the plate body 14 (sub-unit 11) is moved downwards with the tip Ft of the wall mounting bracket F inserted into the mounting hole 14D, the guide portion 14G, the leaf spring member 15A, and the inclined portion 15B2 make contact with the tip Ft and guide it toward the wall mounting hole 14A by following the inclination. In other words, the guide portion 14G guides the tip Ft of the wall mounting bracket F from the left side of the mounting hole 14D toward the wall mounting hole 14A.

[0057] The locking member 15 is located below the wall mounting hole 14A and is provided on the plate body 14. The locking member 15 prevents the tip Ft of the wall mounting fixture F, which is hung on the wall mounting hole 14A, from coming off. The locking member 15 comprises a leaf spring member 15A as a fixed part fixed to the plate body 14, and a non-fixed part 15B attached to the leaf spring member 15A that can move closer to and away from the wall mounting hole 14A. The non-fixed part 15B is biased by the leaf spring member 15A to be in a state closer to the wall mounting hole 14A. Specifically, the non-fixed part 15B is biased toward the position that separates the wall mounting hole 14A and the mounting hole 14D, i.e., toward the dividing part 14F.

[0058] The leaf spring member 15A is formed as a plate-shaped spring member that can bend and deform. The leaf spring member 15A is formed as a rectangular (strip-shaped) plate that extends diagonally so as to be symmetrical with the guide portion 14G in the left-right direction, with the wall mounting hole 14A in between. As a result, the leaf spring member 15A, like the guide portion 14G, has the function of guiding the tip Ft of the wall mounting fixture F from the mounting hole 14D toward the wall mounting hole 14A.

[0059] The base end of the rectangular leaf spring member 15A is attached to the plate body 14 and serves as a fixed end 15A1. On the other hand, the tip end of the leaf spring member 15A has an unfixed portion 15B attached to it, and the unfixed portion 15B is a free end 15A2 that can be displaced in the direction of the deflection deformation (left-right direction) of the leaf spring member 15A. Specifically, the leaf spring member 15A in its free state, as shown in Figures 7 to 9, extends linearly, inclined diagonally upward to the left toward the wall mounting hole 14A. In other words, the leaf spring member 15A in its free state is positioned with the unfixed portion 15B close to the dividing portion 14F due to a biasing force that tries to return the plate body to a straight shape. Furthermore, when a pressing force is applied to move the unfixed portion 15B to the right, the leaf spring member 15A elastically deforms, as shown in Figure 10, allowing the unfixed portion 15B to move away from the wall mounting hole 14A.

[0060] Here, the biasing force (spring force) of the leaf spring member 15A is set to such an extent that it can elastically deform when the tip Ft of the wall mounting bracket F is inserted into the mounting hole 14D, the sub-unit 11 is moved downward, and the tip Ft comes into contact with the leaf spring member 15A and the inclined portion 15B2 of the non-fixed portion 15B.

[0061] The non-fixed portion 15B is located in the movable space 14E of the plate body 14. The non-fixed portion 15B is made of a plate body that is in the same plane as the plate body 14. The free end 15A2 of the leaf spring member 15A is attached to the front surface of the non-fixed portion 15B opposite to the wall surface W. At the end of the non-fixed portion 15B on the side of the wall mounting hole 14A, a notched recess 15B1 is formed so as to stably hold the tip Ft of the wall mounting fixture F, screws, nails, etc., inserted into the wall mounting hole 14A.

[0062] The non-fixed portion 15B is biased by the leaf spring member 15A toward a position (separating portion 14F) that separates the wall mounting hole 14A and the mounting hole 14D. The non-fixed portion 15B is also displaced by the tip Ft of the wall mounting fixture F when the tip Ft moves from the mounting hole 14D toward the wall mounting hole 14A, and returns to the position that separates the wall mounting hole 14A and the mounting hole 14D when the tip Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A.

[0063] Furthermore, the non-fixed portion 15B has an inclined portion 15B2 on the extension of the leaf spring member 15A. This inclined portion 15B2 works in cooperation with the leaf spring member 15A to guide the tip Ft of the wall mounting fixture F from the right side of the mounting hole 14D toward the wall mounting hole 14A.

[0064] The locking member 15 has a projection 15C on the front side of the non-fixed portion 15B. The projection 15C is positioned to the right of the wall mounting hole 14A so that the thumb of the right hand grasping the slave unit 11 can be hooked onto it and moved to the right. The projection may also be positioned to the left of the wall mounting hole 14A or on both sides.

[0065] In the free state shown in Figure 9, the locking member 15 has its non-fixed portion 15B approaching the dividing portion 14F of the plate body 14. The distance between the dividing portion 14F and the non-fixed portion 15B at this time is set to a dimension G1 that is smaller than the width dimension B of the tip portion Ft of the wall mounting fixture F, for example, less than half of the width dimension B. On the other hand, as shown in Figure 10, when the non-fixed portion 15B is moved to the right against the biasing force of the leaf spring member 15A, the distance between the dividing portion 14F and the non-fixed portion 15B can be widened to a dimension G2 that is sufficient for the tip portion Ft of the wall mounting fixture F to pass through. Furthermore, when the tip portion Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A, the locking member 15 can prevent this tip portion Ft from coming out of the wall mounting hole 14A.

[0066] As shown in Figures 3, 4, and 6, the adjuster mechanism 16 comprises a rail member 16A, a slider 16C, and a mounting bracket 16D. The rail member 16A is formed extending upward from the front case portion 12B, which is the front side of the plate 14 of the fastener 13. A guide hole 16B, consisting of an elongated slit extending in the vertical direction, is formed in the central part of the rail member 16A. The rail member 16A is integrally formed with the upper part of the front case portion 12B.

[0067] The slider 16C is composed of two plate-shaped members facing each other with the rail member 16A in between. The central part of the slider 16C is inserted into the guide hole 16B of the rail member 16A. The slider 16C can be shifted vertically along the guide hole 16B.

[0068] The mounting bracket 16D is attached to the front side of the slider 16C. The mounting bracket 16D is inserted into a wall mounting hole (not shown) of the radio-controlled clock C and supports the radio-controlled clock C. The mounting bracket 16D consists of a cylindrical rod-shaped part and a flange formed at the tip of the rod-shaped part, which has a larger radial dimension than the rod-shaped part. The mounting bracket 16D is made of, for example, a metal material. The outer circumferential surface of the flange is, for example, knurled. The flange of the mounting bracket 16D serves as a retaining part to prevent the radio-controlled clock C from falling out of the mounting bracket 16D.

[0069] A male thread is formed at the base end of the rod-shaped portion of the mounting bracket 16D. When the mounting bracket 16D is rotated clockwise, for example, this male thread brings the two plate-shaped members of the slider 16C closer together. As a result, the slider 16C is clamped between the two plate-shaped members and the rail member 16A, restricting its vertical displacement and allowing it to be positioned and fixed at any desired position. On the other hand, when the mounting bracket 16D is rotated counterclockwise, the two plate-shaped members of the slider 16C move apart. As a result, the clamping state of the rail member 16A by the two plate-shaped members is released, and vertical displacement becomes possible.

[0070] Next, with reference to Figures 3, 4, 6 through 10, an example of the work procedure for attaching the sub-unit 11 to the wall mounting bracket F, as well as the usage and function of the locking member 15, will be explained.

[0071] When attaching the sub-unit 11 to the wall mounting bracket F installed at a high position on the wall W, for example, a ladder is leaned against the wall W. Next, the ladder is climbed to the predetermined height, and while grasping the sub-unit 11 with the right hand, the tip Ft of the wall mounting bracket F is inserted into the mounting hole 14D of the plate body 14. Inserting the tip Ft of the wall mounting bracket F into the mounting hole 14D is easy because the mounting hole 14D is large. At this time, the left hand can grasp the ladder.

[0072] After inserting the tip Ft of the wall mounting bracket F into the mounting hole 14D of the plate body 14, hook the thumb of the right hand onto the projection 15C of the locking member 15 and move it to the right. As a result, as shown in Figure 10, the non-fixed part 15B moves to the right and away from the wall mounting hole 14A, so that the distance between the dividing part 14F of the plate body 14 and the non-fixed part 15B can be widened to dimension G2.

[0073] In this way, once the distance between the dividing section 14F and the non-fixed section 15B has been widened to dimension G2, the sub-unit 11 is moved downwards, and the tip Ft of the wall mounting bracket F is moved to the wall mounting hole 14A. When the tip Ft of the wall mounting bracket F is moved, the guide section 14G or the leaf spring member 15A and the inclined section 15B2 guide the tip Ft toward the wall mounting hole 14A, so that the tip Ft of the wall mounting bracket F can be moved smoothly toward the wall mounting hole 14A.

[0074] After moving the tip Ft of the wall mounting bracket F to the wall mounting hole 14A, release your right thumb from the projection 15C. As a result, as shown in Figure 9, the non-fixed part 15B moves to the left due to the biasing force of the leaf spring member 15A and approaches the wall mounting hole 14A, so that the distance between the dividing part 14F of the plate body 14 and the non-fixed part 15B can be narrowed to dimension G1.

[0075] When the distance between the dividing portion 14F and the non-fixed portion 15B is narrowed to dimension G1, the tip Ft of the wall mounting bracket F cannot pass between the dividing portion 14F and the non-fixed portion 15B. Therefore, the locking member 15 can prevent the tip Ft of the wall mounting bracket F, which is inserted into the wall mounting hole 14A, from coming out of the wall mounting hole 14A.

[0076] Next, we will describe the other procedures for attaching the sub-unit 11 to the wall mounting bracket F. After inserting the tip Ft of the wall mounting bracket F into the mounting hole 14D of the plate body 14, move the sub-unit 11 downwards. At this time, the locking member 15 elastically deforms the leaf spring member 15A when the tip Ft of the wall mounting bracket F comes into contact with the inclined portion 15B2 of the non-fixed portion 15B, causing the non-fixed portion 15B to move away from the wall mounting hole 14A. As a result, the distance between the dividing portion 14F and the non-fixed portion 15B of the plate body 14 widens to a size that the tip Ft can pass through, so that the tip Ft can be moved to the wall mounting hole 14A by passing between the dividing portion 14F and the non-fixed portion 15B.

[0077] Then, when the tip Ft of the wall mounting bracket F moves to the wall mounting hole 14A, the biasing force of the leaf spring member 15A causes the non-fixed part 15B to approach the wall mounting hole 14A, narrowing the distance between the dividing part 14F and the non-fixed part 15B to dimension G1. As a result, the locking member 15 can prevent the tip Ft of the wall mounting bracket F, which is inserted into the wall mounting hole 14A, from coming out of the wall mounting hole 14A.

[0078] After attaching the slave unit 11 to the wall mounting bracket F, the radio-controlled clock C is brought close so that it overlaps the slave unit 11, and the mounting bracket 16D of the slave unit 11 is inserted into the wall mounting hole of the radio-controlled clock C. This fixes the radio-controlled clock C to the slave unit 11. At this time, the slave unit 11 is positioned between the radio-controlled clock C and the wall W, and the front of the slave unit 11 is covered by the radio-controlled clock C. As a result, the slave unit 11, located behind the radio-controlled clock C, emits a pseudo-standard radio wave, so the pseudo-standard radio wave from the slave unit 11 can be delivered to the radio-controlled clock C without being affected by the surrounding environment.

[0079] For example, when replacing the battery in radio-controlled clock C, the radio-controlled clock C is removed from the slave unit 11. At this time, the wall mounting hole of the radio-controlled clock C is generally shaped in such a way that it is fixed in place by the downward displacement of the radio-controlled clock C due to its own weight. Therefore, when removing the radio-controlled clock C from the slave unit 11, the radio-controlled clock C is lifted upward while being moved forward. At this time, the tip Ft of the J-shaped wall mounting bracket F extends diagonally upward. Therefore, if the locking member 15 is not present, when the wall mounting hole of the radio-controlled clock C catches on the mounting bracket 16D of the slave unit 11 and the slave unit 11 is displaced upward together with the radio-controlled clock C, the tip Ft of the wall mounting bracket F may come out of the wall mounting hole 14A of the slave unit 11, and the slave unit 11 may fall.

[0080] In contrast, in this embodiment, the locking member 15 has a non-fixed portion 15B on the lower side of the wall mounting hole 14A to prevent the tip Ft of the wall mounting bracket F from coming loose. Therefore, when the slave unit 11 is moved upward together with the radio-controlled clock C, the slave unit 11 brings the non-fixed portion 15B into contact with the tip Ft of the wall mounting bracket F. As a result, it is possible to restrict the upward displacement of the slave unit 11 and prevent the tip Ft of the wall mounting bracket F from coming out of the wall mounting hole 14A. This prevents the slave unit 11 from falling while the radio-controlled clock C can be removed from the slave unit 11, and prevents damage to the slave unit 11 and the floor surface.

[0081] Thus, in this embodiment, the system includes a slave unit body 21 that outputs a pseudo-standard radio wave, a slave unit casing 12 in which the slave unit body 21 is housed, a fastening device 13 provided on the slave unit casing 12 for fastening the slave unit casing 12 to a wall mounting device F fixed to a wall surface W, and a mounting device 16D for fixing a wall-mounted radio-controlled clock C to the front of the slave unit casing 12 on the side opposite to the wall surface W, such that the slave unit casing 12 overlaps the radio-controlled clock C.

[0082] As a result, the slave unit 11 is mounted between the back of the wall-mounted radio-controlled clock C and the wall W, so as to overlap with the clock C. Therefore, since the slave unit 11, located behind the radio-controlled clock C, emits a pseudo-standard radio wave, the pseudo-standard radio wave from the slave unit 11 can be delivered to the radio-controlled clock C without being affected by the surrounding environment.

[0083] Furthermore, the fastening device 13 comprises a plate body 14 into which a wall mounting hole 14A is formed, into which the tip Ft of the wall mounting device F is inserted, and a locking member 15 located below the wall mounting hole 14A to prevent the tip Ft of the wall mounting device F from coming off. The locking member 15 comprises a leaf spring member 15A as a fixed part fixed to the plate body 14, and a non-fixed part 15B attached to the leaf spring member 15A that can move closer to and away from the wall mounting hole 14A, and the non-fixed part 15B is biased to be closer to the wall mounting hole 14A.

[0084] In this case, when attaching the sub-unit 11 to the wall mounting bracket F, the sub-unit 11 is grasped with the right hand, and the non-fixed part 15B is moved to the right, away from the wall mounting hole 14A. This allows the tip Ft of the wall mounting bracket F to be inserted into the wall mounting hole 14A through the gap created by the movement of the non-fixed part 15B.

[0085] Furthermore, after inserting the tip Ft of the wall mounting bracket F into the wall mounting hole 14A of the fastening device 13, the non-fixed portion 15B is biased to be close to the wall mounting hole 14A. This prevents the tip Ft of the wall mounting bracket F from coming out of the wall mounting hole 14A.

[0086] As a result, the sub-unit 11 can be easily attached to the wall W with one hand while being secured to the wall mounting bracket F. It can also be easily removed. This improves the workability when attaching and detaching the sub-unit 11 to the wall W (wall mounting bracket F). Moreover, since the non-fixed part 15B is provided on the plate body 14 via the leaf spring member 15A, the loss of parts can be prevented.

[0087] In this embodiment, the plate body 14 has a mounting hole 14D located below the wall mounting hole 14A and continuous with the wall mounting hole 14A, and the non-fixed part 15B is biased toward a position separating the wall mounting hole 14A and the mounting hole 14D. In this case, the mounting hole 14D can be made large, so the tip Ft of the wall mounting fixture F can be easily inserted into the mounting hole 14D. After inserting the tip Ft of the wall mounting fixture F into the mounting hole 14D, the non-fixed part 15B can be moved away from the wall mounting hole 14A, and the sub-unit 11 can be moved downwards, thereby allowing the tip Ft of the wall mounting fixture F to be inserted into the wall mounting hole 14A. After inserting the tip Ft of the wall mounting bracket F into the wall mounting hole 14A, the non-fixed portion 15B is biased toward the position separating the wall mounting hole 14A and the mounting hole 14D, so the locking member 15 can prevent the tip Ft of the wall mounting bracket F from coming out of the wall mounting hole 14A.

[0088] In this embodiment, the mounting hole 14D has a larger opening area than the wall mounting hole 14A, the plate body 14 is provided with a guide portion 14G that guides the tip portion Ft of the wall mounting fixture F from the mounting hole 14D toward the wall mounting hole 14A, and the non-fixed portion 15B is displaced by being pushed by the tip portion Ft when the tip portion Ft of the wall mounting fixture F moves from the mounting hole 14D toward the wall mounting hole 14A, and returns to a position that separates the wall mounting hole 14A and the mounting hole 14D when the tip portion Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A.

[0089] Therefore, the tip Ft of the wall mounting bracket F can be easily inserted into the mounting hole 14D, which has a large opening area. When the sub-unit 11 is moved downwards with the tip Ft of the wall mounting bracket F inserted into the mounting hole 14D, the guide part 14G guides the tip Ft toward the wall mounting hole 14A. In addition, the leaf spring member 15A and the inclined part 15B2 also guide the tip Ft toward the wall mounting hole 14A, similar to the guide part 14G. As a result, the tip Ft of the wall mounting bracket F can be smoothly moved from the mounting hole 14D to the wall mounting hole 14A by the guide part 14G, etc. Furthermore, the non-fixed part 15B can be displaced by being pushed by the tip Ft of the wall mounting bracket F when the tip Ft moves from the mounting hole 14D toward the wall mounting hole 14A. Therefore, by moving the sub-unit 11 downwards with the tip Ft of the wall mounting bracket F inserted into the mounting hole 14D, the tip Ft of the wall mounting bracket F can be easily inserted into the wall mounting hole 14A. Moreover, after the tip Ft of the wall mounting bracket F is inserted into the wall mounting hole 14A, the non-fixed part 15B returns to the position separating the wall mounting hole 14A and the mounting hole 14D, thus preventing the tip Ft of the wall mounting bracket F from coming out of the wall mounting hole 14A.

[0090] In this embodiment, the fixed portion is a flexible leaf spring member 15A. The base end of the leaf spring member 15A is attached to the plate body 14 to become a fixed end 15A1, and the tip end of the leaf spring member 15A has an unfixed portion 15B attached to it, which is a free end 15A2 that can be displaced in the direction of the flexural deformation of the leaf spring member 15A. This allows a simple leaf spring member 15A to be used to bias the unfixed portion 15B, thereby simplifying the configuration. Furthermore, by arranging the leaf spring member 15A diagonally, it can guide the tip Ft of the wall mounting bracket F from the mounting hole 14D to the wall mounting hole 14A, similar to the guide portion 14G.

[0091] In the above embodiment, the slave unit 11 is equipped with an adjuster mechanism 16 that can adjust its relative position to the radio-controlled clock C in the vertical direction (up and down direction), but the present invention is not limited to this. For example, if the slave unit 11 is small enough to be hidden behind the radio-controlled clock C, and the radio-controlled clock C can receive a pseudo-standard radio wave from the slave unit 11, the adjuster mechanism 16 may be omitted. That is, the mounting bracket 16D may be fixed in a state that it cannot be displaced in the vertical direction.

[0092] In the above embodiment, the mounting bracket 16D is attached to the plate body 14 of the fastener 13 via a rail member 16A or the like, but the present invention is not limited to this. The mounting bracket 16D may be attached to, for example, the front case portion 12B.

[0093] In the above embodiment, the slave unit 11 directly receives time information signals from the master unit 1, but the present invention is not limited thereto. For example, the wireless module 24 of the slave unit 11 may have a function to relay communication between the master unit 1 and other slave units 11. In this case, the slave unit 11 can indirectly receive time information signals from the master unit 1 via other slave units 11.

[0094] In the above embodiment, a flexible resin leaf spring member 15A was used as the fixing part, but the present invention is not limited thereto. For example, the leaf spring member may be made from a metal material. Alternatively, other springs such as torsion coil springs may be used as the fixing part.

[0095] In the above embodiment, the upper part of the wall mounting hole 14A is formed in an Ω shape from a horizontally extending straight portion 14B and a circular portion 14C that protrudes upward in a circular shape, but the present invention is not limited to this. For example, the upper part of the wall mounting hole may be in other shapes such as circular, rectangular, or inverted V shape.

[0096] In the above embodiment, the slave unit 11 receives a time information signal from the master unit 1, but the present invention is not limited to this. For example, the slave unit may receive time information through various communication means, including wireless LAN. In this case, the master unit is not required. [Explanation of Symbols]

[0097] 11. Sub-unit (Radio-controlled clock repeater) 12. Sub-unit casing (casing) 13. Fasteners 14 Plate 14A Wall mounting hole 14D mounting holes 14F Section 14G Information Department 15 Locking member 15A Leaf spring component (fixing part) 15A1 Fixed end 15A2 Free end 15B Non-fixed part 16 Adjuster mechanism 16D mounting hardware 21. Handset (main unit) C Radio-controlled clock W Wall F Wall mounting bracket Ft tip

Claims

1. The main unit emits a pseudo-standard radio wave, The casing in which the main body is housed, A fastening device is provided on the casing and fastens the casing to a wall mounting fixture fixed to the wall surface, The casing is positioned so that it overlaps the wall-mounted radio-controlled clock, and a mounting bracket is provided to fix the radio-controlled clock to the front of the casing that is opposite to the wall surface. The aforementioned fastener is, A plate body having a wall-mounting hole into which the tip of the aforementioned wall mounting fixture is inserted, A locking member is provided, located below the wall mounting hole, to prevent the tip of the wall mounting fixture from coming off. The locking member is A fixing part fixed to the plate body, The fixed portion is attached to the fixed portion and is movable along the surface of the plate body, thereby being able to approach and move away from the wall mounting hole, The non-fixed portion is biased to be close to the wall mounting hole. The radio-controlled clock repeater is characterized in that the non-fixed portion is provided with a projection that moves the non-fixed portion in a direction away from the wall-mounting hole against a biasing force.

2. The plate has a mounting hole formed therein, located below the wall mounting hole and continuous with the wall mounting hole. The radio-controlled clock repeater according to claim 1, characterized in that the non-fixed portion is biased toward a position separating the wall-mounting hole and the mounting hole.

3. The aforementioned mounting hole has a larger opening area compared to the aforementioned wall mounting hole. The plate body is provided with a guide portion that guides the tip of the wall mounting fixture from the mounting hole toward the wall mounting hole, The radio-controlled clock repeater according to claim 2, characterized in that the non-fixed portion is displaced by being pushed by the tip of the wall mounting bracket when the tip of the wall mounting bracket moves from the mounting hole toward the wall mounting hole, and returns to a position that separates the wall mounting hole and the mounting hole when the tip of the wall mounting bracket is inserted into the wall mounting hole.

4. The aforementioned fixing part is a leaf spring member that can bend and deform, The base end of the aforementioned leaf spring member is attached to the plate body and becomes a fixed end. The radio-controlled clock repeater according to claim 1, characterized in that the tip end of the leaf spring member is to which the non-fixed portion is attached, and the non-fixed portion is a free end that can be displaced in the direction of the bending deformation of the leaf spring member.

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