Radio 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-controlled clock repeater capable of outputting a pseudo standard radio wave toward a radio-controlled clock. [Background technology]

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

[0003] The radio-controlled clock repeater has a casing that houses a main body that outputs pseudo standard radio waves and is equipped with a latch. The latch is latched to the tip of a wall mounting fixture that is fixed to a wall surface. The radio-controlled clock repeater also has a latch member that prevents the tip of the wall mounting fixture from slipping out of the wall mounting hole. This latch member is located below the tip of the wall mounting fixture that is hung in the wall mounting hole, and is attached to the casing so as to straddle the wall mounting hole horizontally. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-135817 [Patent Document 2] Japanese Patent Application Publication No. 2024-7708 Summary of the Invention [Problem to be solved by the invention]

[0005] Wall-mounted radio-controlled clocks are generally placed high on the wall so that they can be seen from a distance. Therefore, when mounting a radio-controlled clock repeater on a wall, the user must hold the radio-controlled clock repeater by hand, climb up a ladder or stepladder, and insert the wall mounting hole into the tip of the wall mounting bracket.

[0006] The radio-controlled clock repeaters disclosed in Patent Documents 1 and 2 are equipped with a latch that prevents the tip of the wall mount from slipping out of the wall mounting hole. Because the latch is formed as a separate part from the casing, the worker must hold the casing in one hand and the latch in the other. This makes it difficult to install the radio-controlled clock repeater on an unstable ladder or stepladder, and there is also a risk of dropping and losing the latch.

[0007] An object of one embodiment of the present 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 pseudo-standard radio waves, a casing that houses the main body, a hanging device that is attached to the casing and hangs the casing on a wall mounting fixture fixed to a wall surface, and a mounting fixture that fixes the radio-controlled clock to the front side of the casing opposite the wall surface so that the casing overlaps the wall-mounted radio-controlled clock, wherein the hanging device comprises a plate body with a wall mounting hole formed therein into which the tip of the wall mounting fixture is inserted, and a locking member that is positioned below the wall mounting hole and prevents the tip of the wall mounting fixture from coming loose, and the locking member comprises a fixed portion fixed to the plate body and a non-fixed portion attached to the fixed portion and that can move toward and away from the wall mounting hole, and the non-fixed portion is biased toward a state close to the wall mounting hole. [Effects of the Invention]

[0009] According to one embodiment of the present invention, while holding the casing in one hand, the user can insert the tip of the wall mount into the wall mounting hole by using their fingertips to move the non-fixed portion away from the wall mounting hole. Furthermore, by releasing their fingertips from the non-fixed portion, the non-fixed portion is biased toward the wall mounting hole. This allows the radio-controlled clock repeater to be easily attached to the wall with one hand while being secured against removal from the wall mount. Furthermore, because the non-fixed portion is attached to the plate via the fixed portion, loss of the repeater can be prevented. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is an overall configuration diagram showing a radio-controlled clock repeater according to an embodiment of the present invention; [Figure 2] FIG. 2 is a block diagram showing the configuration of a parent device. [Figure 3] FIG. 2 is a front view showing the slave unit in FIG. [Figure 4] FIG. 10 is a perspective view showing the handset and radio-controlled clock mounted on the wall. [Figure 5] FIG. 2 is a block diagram showing the configuration of a slave unit. [Figure 6] FIG. [Figure 7] FIG. 10 is a front view showing the handset with the locking member exposed. [Figure 8] FIG. 8 is a perspective view showing the plate body, locking member, mounting holes, etc. of FIG. 7. [Figure 9] 10 is an explanatory diagram showing the state in which the tip of the wall mounting fixture is placed in the mounting hole of the plate body. FIG. [Figure 10] 10 is an explanatory diagram showing the state in which the tip of the wall mounting fixture is placed in the wall hanging hole of the plate body. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] A radio-controlled clock repeater according to an embodiment of the present invention will be described in detail below with reference to FIGS.

[0012] 1, the radio-controlled clock repeater includes a master unit 1 that transmits a time information signal (standard radio wave data) according to 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 a radio-controlled clock repeater. However, if the master unit has the function of receiving a time information signal and the function of outputting a pseudo standard radio wave, the master unit can be used as a radio-controlled 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 unit real-time clock 3 (hereinafter referred to as master unit RTC 3), a main power supply unit 4, a wireless module 5, and a master unit controller 8. The master unit RTC 3, wireless module 5, and master unit controller 8 are housed within the master unit casing 2. In addition, 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 quartz oscillator and keeps 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 4 via the master controller 8. Therefore, when the main power supply 4 is connected to a commercial AC power source, the master RTC 3 is driven by the power supplied from the main power supply 4. The master RTC 3 determines 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] Furthermore, the master RTC 3 is connected to a backup power supply 3A, which may be a button battery, a capacitor, etc. This allows the master RTC 3 to continue operating on the power supply from the backup power supply 3A and keep telling the time even when the power supply from the main power supply 4 is temporarily stopped.

[0016] Even devices that run on commercial AC power generally use an RTC (real-time clock) to manage the time. The RTC's time can vary depending on the surrounding environment (mainly temperature). To avoid this variation, the parent RTC3 has a built-in correction function. Specifically, the parent RTC3 adds one second when the frequency clock of the reference oscillator (e.g., 32.768 kHz) reaches a "predetermined count," but now adds one second only once every 20 seconds at the "predetermined count + set value." This allows the parent RTC3 to correct the time count.

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

[0018] The main power supply unit 4 also 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 parent unit controller 8. The main power supply unit 4, excluding the power adapter 4A, is housed within the parent 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 parent unit casing 2.

[0019] The wireless module 5 constitutes the parent device side communication unit. The wireless module 5 of the parent device 1 performs LPWA (Low Power Wide Area Network) wireless communication with the wireless module 24 of the child device 11. The wireless module 5 uses, for example, the LoRa communication method in the 920 MHz band. This makes the wireless module 5 relatively resistant to external disturbances and capable of long-distance communication. The wireless module 5 transmits and receives radio waves in the 920 MHz band from an antenna (not shown). The use of radio waves in the 920 MHz band provides high reception sensitivity and is resistant to building walls, enabling communication even in complex indoor spaces.

[0020] The time setting unit 6 is attached to the front of the parent unit casing 2. The time setting unit 6 is composed of, for example, a plurality of button switches, and is connected to the parent unit controller 8. The time setting unit 6 is used to set the initial time of the parent unit 1. Specifically, the time setting unit 6 has a switch for advancing and retreating the initial time. For example, when starting up the parent unit 1 for the first time, or when the parent unit 1 has not been turned on for a long period of time, the user sets the initial time of the parent unit 1 using the time setting unit 6.

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

[0022] The master controller 8 is configured by, for example, a personal 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 RTC 3 based on the voltage signal of the commercial alternating current power supply (commercial AC power supply).

[0023] The frequency of commercial AC power is controlled with high precision by the power company. Therefore, when the voltage signal of commercial AC power is used as the clock's oscillator circuit, there is no constant "error per month" as with a quartz oscillator, and the cumulative error can be maintained within a range of about ±10 seconds throughout the year. Therefore, from a long-term perspective, time management synchronized with AC power without using an RTC is more accurate. Therefore, while the master controller 8 is powered by commercial AC power, it periodically calculates the deviation between the master RTC 3 and the AC-synchronized time. Based on this deviation, the master controller 8 adjusts the correction setting of the master RTC 3. This allows the master controller 8 to obtain accurate time information using the master RTC 3.

[0024] Note that the master unit 1 is not limited to acquiring time information using the master unit RTC 3. For example, the master unit 1 may be connected to the Internet by wire or wirelessly, similar to the radio-controlled clock repeater disclosed in Japanese Patent Application Laid-Open No. 2010-183501, and may acquire time information via the Internet.

[0025] The master controller 8 is connected to a standard radio wave data setting circuit 9. The master controller 8 outputs accurate time information acquired using the master RTC 3 or the like to the standard radio wave data setting circuit 9. The standard radio wave data setting circuit 9 sets a time code, which becomes 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 the 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] Master controller 8 is normally in a sleep state. Master controller 8 wakes up at a predetermined wake-up date and time D10 and waits for a call signal from slave 11. When master controller 8 receives a call signal from slave 11, it establishes communication with slave 11 and transmits standard radio wave data as a time information signal to slave 11 using wireless module 5.

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

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

[0029] The slave RTC 22 is configured in a similar manner to the master RTC 3. Therefore, the slave RTC 22 is configured using, for example, a quartz oscillator or the like to measure time. The slave RTC 22 is connected to the slave controller 30. Power is supplied to the slave RTC 22 from the power supply unit 23 via the slave controller 30. Therefore, the slave RTC 22 is driven by the power supplied from the power supply unit 23. The slave RTC 22 determines the current time based on the initial time input by a time setting unit (not shown) of the slave 11. The initial time of the slave RTC 22 does not necessarily have to be set by the slave 11, but may be set by the master 1 using communication between the master and slaves 11. The slave RTC 22 outputs a signal corresponding to the current time to the slave controller 30. Like the master RTC 3, the slave RTC 22 also has a built-in correction function for correcting errors. Similarly to the parent RTC 3, the child RTC 22 may also be connected to a backup power supply, such as a button cell battery or a capacitor.

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

[0031] The battery unit 23A includes, for example, a plurality of batteries (not shown) connected in series. The battery unit 23A has a socket (not shown) that accommodates the plurality of 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 battery from over-discharge. The regulator 23E converts the output voltage from the battery unit 23A to a constant low voltage (e.g., 3.3 V) 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, power supply from the battery unit 23A to the slave controller 30 is cut off. The battery voltage confirmation 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 a detection signal to the over-discharge protection circuit 23B and the slave controller 30.

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

[0033] Although LPWA wireless communication is performed between the master device 1 and the slave device 11 in the above embodiment, the present invention is not limited to this. For example, various wireless communication protocols including Bluetooth (registered trademark), BLE, etc. may be used between the master device 1 and the slave device 11.

[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 onto, for example, a 40 kHz carrier signal and supplies the modulated signal to the coil 25B. The coil 25B forms an antenna coil. The coil 25B is a small inductor with a diameter of approximately 5 to 10 mm (e.g., 7 mm) and an axial length of approximately 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 with each other (see FIG. 5). In this case, the coil 25B and the capacitor 25C form a resonant circuit with a Q value of 40 kHz. The coil 25B emits a pseudo standard radio wave of 40 kHz (pseudo standard radio wave) based on the signal supplied from the standard radio wave output circuit 25A. Therefore, the pseudo standard radio wave output unit 25 can efficiently emit a 40 kHz pseudo standard radio wave from the coil 25B with low power consumption.

[0035] The pseudo standard time signal output unit 25 is not limited to outputting a 40 kHz pseudo standard time signal, but may output a 60 kHz pseudo standard time signal. Also, the frequency of the pseudo standard time signal may be configured to select either 40 kHz or 60 kHz.

[0036] As shown in FIG. 3, the receiving antenna A of the radio-controlled clock C that receives the standard radio wave tends to be located in the center of the radio-controlled clock C in the left-right direction. Taking this into consideration, the coil 25B is located in the center 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. Meanwhile, the wall hanging hole of the radio-controlled clock C is located in the center 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 is highly sensitive to the pseudo standard radio wave from the coil 25B. Furthermore, the coil 25B is located in the upper part of the slave unit casing 12.

[0037] The display unit 26 is attached to the front of the slave unit casing 12. The display unit 26 is configured, for example, by a single-color chip LED, a full-color LED, or the like. The display unit 26 is configured, for example, by two LEDs, and is connected to the slave unit controller 30. The display unit 26 lights up in accordance with the current state (status) of the slave unit 11. Specifically, the display unit 26 switches between off, on, blinking, and lighting color in accordance with the sleep state, driving state, communication state with the master unit 1, error state, and the like.

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

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

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

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

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

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

[0044] At start time Ts, slave controller 30 outputs accurate time information acquired using slave RTC 22 to pseudo standard time signal output unit 25 from start time Ts to end time Te. This causes slave 11 to emit pseudo standard time signals from coil 25B from start time Ts to end time Te. The pseudo standard time signals may be output continuously from start time Ts to end time Te, or may be output intermittently at regular intervals.

[0045] Since the base unit 1 is connected to a commercial AC power source, it may be kept running at all times. However, to reduce power consumption, it is preferable that the base unit 1 be operated only for the required time from the start-up date and time D10. The start-up date and time D10 of the base unit 1 is the same as the start-up date and time D11 of the slave unit 11. However, to allow for a time error due to the slave unit RTC 22, the start-up date and time D10 is set several minutes (for example, about 5 minutes) earlier than the start-up date and time D11. As a result, the base unit 1 is in an operating state when the slave unit 11 transmits a call signal.

[0046] The start time Ts and end time Te are set so that they include the time when the radio-controlled clock C receives the standard radio wave and adjusts the time. Generally, the radio-controlled clock C receives the standard radio wave and adjusts the 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. In addition, the start date and time D11 of the slave device 11 is set to, for example, one hour before the start time Ts.

[0047] The activation dates and times D10 and D11 are set at predetermined intervals of, for example, 1 to 30 days. Specifically, the activation dates and times D10 and D11 are set at intervals of, for example, 2 weeks (14 days). Therefore, for example, if the activation date and time D11 of the slave unit 11 is set to start at approximately 12:50 AM on January 1, the master unit 1 will start at approximately 12:45 AM on January 1 as the activation date and time D10. The next time the master unit 1 and the slave unit 11 start (next activation date) is set to January 15, two weeks later. The activation dates and times D10 and D11, the start time Ts, and the end time Te may be changed as appropriate depending on the user's request, the specifications of the radio-controlled clock C, etc. In addition, although the slave unit 11 calls the master unit 1 in this embodiment, the master unit 1 may call the slave unit 11 instead.

[0048] In this embodiment, the day interval at which slave unit 11 is activated is 2 weeks, but the present invention is not limited to this. For example, the day interval at which slave unit 11 is activated may be any number of days between 1 and 13, or any number of days between 15 and 30. The day interval at which slave unit 11 is activated is set appropriately taking into consideration the time accuracy of radio-controlled clock C, the power consumption of slave unit 11, and the like. Furthermore, if radio-controlled clock C receives a standard time signal during the day and adjusts the time, the start time Ts and end time Te may be set so that a pseudo standard time signal for that time is transmitted.

[0049] As shown in Figures 3, 4, 6 to 10, the radio-controlled clock repeater slave unit 11 includes a slave unit casing 12, a latch 13, and an adjuster mechanism 16. The slave unit casing 12 is formed in the shape of a thin box having a predetermined thickness and is composed of a rear case portion 12A and a front case portion 12B. The rear case portion 12A is formed, for example, from a rectangular plate material and the peripheral edges of the plate material, and is open on the front side opposite the wall W. The front case portion 12B is provided facing the front side of the rear case portion 12A. Like the rear case portion 12A, the front case portion 12B is formed, for example, from a rectangular plate material and the peripheral edges of the plate material, and is open on the rear side facing the wall W.

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

[0051] A window 12C is formed in the center of the front case 12B. The window 12C is formed, for example, by a rectangular through-hole. A power switch 23C, a display unit 26, a setting unit 27, an access switch 28, and the like are exposed inside the window 12C.

[0052] The hanging device 13 is provided integrally with the upper part of the rear case part 12A that constitutes the handset casing 12. In other words, the hanging device 13 is molded integrally with the rear case part 12A using a resin material. The hanging device 13 includes a plate body 14 having a wall-mounting hole 14A formed therein, into which the tip part Ft of the wall mounting fixture F is inserted, and a locking member 15 that is positioned below the wall-mounting hole 14A and prevents the tip part Ft of the wall mounting fixture F from coming off. The hanging device 13 is provided on the plate body 14 and further includes a mounting hole 14D that is positioned below the wall-mounting hole 14A and is continuous with the wall-mounting hole 14A.

[0053] As shown in FIGS. 7 to 10, the plate 14 is formed in the shape of a rectangular flat plate extending upward from the top of the rear case portion 12A. The plate 14 is made of the same resin material as the rear case portion 12A and, like the rear case portion 12A, has a peripheral edge to ensure rigidity. A wall-hanging hole 14A is formed in the plate 14 into which the tip Ft of the wall mounting fixture F is inserted. The wall mounting fixture F is attached to the wall (wall W) of a building. The wall mounting fixture F is made of, for example, a metal plate, and has a narrow plate portion extending downward that is folded back upward to form a hook-shaped tip Ft. 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 near the upper side of the plate 14. The upper part of the wall-mounting hole 14A is shaped like an Ω, consisting of a horizontally extending straight portion 14B and a circular portion 14C that protrudes upward. The straight portion 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, if a cylindrical object such as a screw or nail is used as the wall mounting fixture, the circular portion 14C can stably engage with the cylindrical object. Furthermore, the wall-mounting hole 14A has a small opening area that is small enough to fit the tip Ft of the wall mounting fixture F (with a small gap). Therefore, the tip Ft of the wall mounting fixture F stably engages with the wall-mounting hole 14A without any rattle. This allows the hanging device 13 to secure the handset 11 to the wall W in a hanging state. The wall-hanging hole 14A is not limited to a pentagonal shape, but may be a triangle, a rhombus, or a polygon. The wall-hanging hole 14A may also be a circle or an ellipse.

[0055] The plate 14 has a mounting hole 14D formed below the wall-mounting hole 14A and continuous with the wall-mounting hole 14A. A movement space 14E, which allows a non-fixed portion 15B of a locking member 15 (described later) to move laterally, is formed in the plate 14 and immediately above the mounting hole 14D. The mounting hole 14D is separated from the movement space 14E by a leaf spring member 15A (described later), forming a pentagonal through-hole (opening) (the area indicated by the two-dot chain line in FIG. 7). Furthermore, the plate 14 has a partition 14F formed at the boundary between the mounting hole 14D and the wall-mounting hole 14A, which is the top of the pentagonal mounting hole 14D. The mounting hole 14D has a larger opening area than the wall-mounting hole 14A. This allows the tip Ft of the wall mount F to be easily inserted into the mounting hole 14D, which has a larger opening area.

[0056] Furthermore, the plate 14 includes a guide portion 14G that guides the tip Ft of the wall mounting fixture F from the mounting hole 14D toward the wall-hanging hole 14A. This guide portion 14G extends obliquely toward the partition 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 14 (handset 11) is moved downward with the tip Ft of the wall mounting fixture F inserted into the mounting hole 14D, the guide portion 14G, the leaf spring member 15A, and the inclined portion 15B2 contact the tip Ft and guide it along the inclination toward the wall-hanging hole 14A. That is, the guide portion 14G guides the tip Ft of the wall mounting fixture F from the left side of the mounting hole 14D toward the wall-hanging hole 14A.

[0057] The locking member 15 is provided on the plate 14, positioned below the wall-mounting hole 14A. The locking member 15 prevents the tip Ft of the wall mounting fixture F from slipping out of the wall-mounting hole 14A. The locking member 15 includes a leaf spring member 15A as a fixed portion fixed to the plate 14, and a non-fixed portion 15B attached to the leaf spring member 15A and capable of moving toward and away from the wall-mounting hole 14A. The non-fixed portion 15B is biased toward the wall-mounting hole 14A by the leaf spring member 15A. More specifically, the non-fixed portion 15B is biased toward the position that separates the wall-mounting hole 14A and the mounting hole 14D, i.e., toward the separating portion 14F.

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

[0059] The base end of the rectangular leaf spring 15A is attached to the plate 14 and forms a fixed end 15A1. Meanwhile, the tip end of the leaf spring 15A is attached to a non-fixed portion 15B, forming a free end 15A2 that allows the non-fixed portion 15B to be displaced in the flexural deformation direction (left-right direction) of the leaf spring 15A. Specifically, in the free state shown in FIGS. 7 to 9, the leaf spring 15A extends linearly and tilts obliquely upward and left toward the hanging hole 14A. In other words, in the free state, the biasing force of the leaf spring 15A, which attempts to return the plate to its straight state, positions the non-fixed portion 15B close to the partition portion 14F. Furthermore, when a pressing force is applied to the non-fixed portion 15B to the right, the leaf spring 15A elastically deforms, allowing the non-fixed portion 15B to move away from the hanging hole 14A, as shown in FIG. 10.

[0060] Here, the spring force of the leaf spring member 15A is set to a degree that allows elastic deformation when the tip Ft of the wall mounting fixture F is inserted into the mounting hole 14D and the handset 11 is moved downward and the tip Ft abuts against the inclined portion 15B2 of the leaf spring member 15A and the non-fixed portion 15B.

[0061] The non-fixed portion 15B is disposed in the movement space 14E of the plate body 14. The non-fixed portion 15B is made of a plate body that is flush with the plate body 14. A free end 15A2 of the leaf spring member 15A is attached to the front surface of the non-fixed portion 15B, opposite the wall surface W. A notched recess 15B1 is formed at the end of the non-fixed portion 15B on the wall mounting hole 14A side so as to stably hold the tip Ft of the wall mounting fixture F, a screw, a nail, or the like inserted into the wall mounting hole 14A.

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

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

[0064] Locking member 15 has protrusion 15C on the front side of non-fixed portion 15B. Protrusion 15C is located on the right side of wall-hanging hole 14A so that the thumb of the right hand holding handset 11 can be hooked onto it and moved to the right. Note that the protrusion may also be located on the left side or both the left and right sides of wall-hanging hole 14A.

[0065] In the free state shown in Fig. 9, the locking member 15 has the non-fixed portion 15B approaching the partition portion 14F of the plate 14. The distance between the partition portion 14F and the non-fixed portion 15B is set to a dimension G1 that is smaller than the width B of the tip Ft of the wall mounting fixture F, for example, a dimension G1 that is less than half the width B. On the other hand, as shown in Fig. 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 partition portion 14F and the non-fixed portion 15B can be expanded to a dimension G2 that is sufficient to allow the tip Ft of the wall mounting fixture F to pass through. When the tip Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A, the locking member 15 prevents the tip Ft from slipping out of the wall mounting hole 14A.

[0066] As shown in Figures 3, 4, and 6, the adjuster mechanism 16 includes a rail member 16A, a slider 16C, and a mounting fixture 16D. The rail member 16A is formed to extend upward from the front case portion 12B, which is the front side of the plate body 14 of the latch device 13. A guide hole 16B consisting of an elongated slit extending in the vertical direction is formed in the center 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-like members facing each other with the rail member 16A in between. The center portion of the slider 16C is inserted into the guide hole 16B of the rail member 16A. The position of the slider 16C can be shifted in the vertical direction along the guide hole 16B.

[0068] The mounting fixture 16D is attached to the front side of the slider 16C. The mounting fixture 16D is inserted into a wall-hanging hole (not shown) of the radio-controlled clock C to support the radio-controlled clock C. The mounting fixture 16D is composed of a cylindrical rod-shaped portion and a flange portion formed at the tip of the rod-shaped portion and having a radial dimension larger than that of the rod-shaped portion. The mounting fixture 16D is made of, for example, a metal material. The outer peripheral surface of the flange portion is knurled, for example. The flange portion of the mounting fixture 16D serves as a stopper portion that prevents the radio-controlled clock C from falling off the mounting fixture 16D.

[0069] A male screw is formed at the base end of the rod-shaped portion of the fixture 16D. This male screw brings the two plate-shaped members of the slider 16C closer to each other when the fixture 16D is rotated clockwise, for example. As a result, the slider 16C is in a state where the rail member 16A is sandwiched between the two plate-shaped members, restricting vertical displacement and positioning and fixing the slider 16C at any position. On the other hand, when the fixture 16D is rotated counterclockwise, the two plate-shaped members of the slider 16C move away from each other. As a result, the slider 16C is released from the sandwiched state of the rail member 16A between the two plate-shaped members, allowing vertical displacement.

[0070] Next, an example of the procedure for attaching the handset 11 to the wall mount F and the use and function of the locking member 15 will be described with reference to FIGS. 3, 4, 6 to 10.

[0071] When attaching the handset 11 to a wall mounting fixture F installed at a high position on a wall W, for example, a ladder is placed against the wall W. Next, the ladder is climbed to a predetermined height, and while holding the handset 11 with the right hand, the tip Ft of the wall mounting fixture F is inserted into the mounting hole 14D of the plate 14. The insertion of the tip Ft of the wall mounting fixture F into the mounting hole 14D can be easily performed because the mounting hole 14D is large. At this time, the ladder can be held with the left hand.

[0072] After inserting the tip Ft of the wall mounting fixture F into the mounting hole 14D of the plate 14, the thumb of the right hand is hooked onto the protrusion 15C of the locking member 15 and moved to the right. As a result, as shown in Figure 10, the non-fixed portion 15B moves to the right and moves away from the wall-hanging hole 14A, and the distance between the partition portion 14F of the plate 14 and the non-fixed portion 15B can be increased to dimension G2.

[0073] Once the gap between partition portion 14F and non-fixed portion 15B has been widened to dimension G2 in this manner, handset 11 is moved downward, and tip portion Ft of wall mounting fixture F is moved to wall mounting hole 14A. During this movement of tip portion Ft of wall mounting fixture F, guide portion 14G, leaf spring member 15A, and inclined portion 15B2 guide tip portion Ft toward wall mounting hole 14A, allowing tip portion Ft of wall mounting fixture F to move smoothly into wall mounting hole 14A.

[0074] After moving the tip Ft of the wall mount F into the wall-hanging hole 14A, the thumb of the right hand is released from the protrusion 15C. As a result, as shown in Figure 9, the non-fixed portion 15B moves to the left due to the biasing force of the leaf spring member 15A and approaches the wall-hanging hole 14A, thereby narrowing the gap between the partition portion 14F of the plate 14 and the non-fixed portion 15B to dimension G1.

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

[0076] Next, another procedure for attaching handset 11 to wall mount F will be described. After inserting tip Ft of wall mount F into mounting hole 14D of plate 14, handset 11 is moved downward. At this time, tip Ft of wall mount F abuts against inclined portion 15B2 of non-fixed portion 15B of locking member 15, thereby elastically deforming leaf spring member 15A and moving non-fixed portion 15B away from wall mounting hole 14A. This widens the gap between partition 14F and non-fixed portion 15B of plate 14 to a size that allows tip Ft to pass through, allowing tip Ft to move to wall mounting hole 14A through the gap between partition 14F and non-fixed portion 15B.

[0077] When the tip Ft of the wall mounting fixture F moves into the wall mounting hole 14A, the biasing force of the leaf spring member 15A moves the non-fixed portion 15B closer to the wall mounting hole 14A, narrowing the gap between the separating portion 14F and the non-fixed portion 15B to dimension G1. This allows the locking member 15 to prevent the tip Ft of the wall mounting fixture F inserted into the wall mounting hole 14A from slipping out of the wall mounting hole 14A.

[0078] After attaching the slave unit 11 to the wall mounting fixture F, the radio-controlled clock C is brought close to the slave unit 11 so that it overlaps the slave unit 11, and the mounting fixture 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 placed between the radio-controlled clock C and the wall W, and the front face 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 the pseudo standard time signal, so that the pseudo standard time signal 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 the radio-controlled clock C, the radio-controlled clock C is removed from the slave unit 11. The wall-hanging hole of the radio-controlled clock C is generally shaped so that the radio-controlled clock C is fixed in place by displacing downward 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 and moved toward the user. At this time, the tip Ft of the J-shaped wall mounting bracket F extends diagonally upward. Therefore, if the locking member 15 were not present, when the wall-hanging hole of the radio-controlled clock C gets caught 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 would come out of the wall-hanging hole 14A of the slave unit 11, and the slave unit 11 would fall.

[0080] In contrast, in this embodiment, the locking member 15 has a non-fixed portion 15B below the wall mounting hole 14A to prevent the tip Ft of the wall mounting fixture F from coming off. Therefore, when the slave unit 11 is moved upward together with the radio-controlled clock C, the slave unit 11 abuts the non-fixed portion 15B against the tip Ft of the wall mounting fixture F. As a result, the slave unit 11 is restricted from being displaced upward, and the tip Ft of the wall mounting fixture F is prevented from coming off the wall mounting hole 14A. This makes it possible to remove the radio-controlled clock C from the slave unit 11 while preventing the slave unit 11 from falling, thereby preventing damage to the slave unit 11 and the floor surface.

[0081] Thus, in this embodiment, the device comprises a handset main body 21 that outputs pseudo-standard radio waves, a handset casing 12 that houses the handset main body 21, a hanging device 13 that is provided on the handset casing 12 and hangs the handset casing 12 on a wall mounting device F fixed to a wall W, and a mounting device 16D that fixes the radio-controlled clock C to the front side of the handset casing 12 opposite the wall W so that the handset casing 12 overlaps the wall-mounted radio-controlled clock C.

[0082] As a result, the slave unit 11 is attached between the back of the wall-mounted radio-controlled clock C and the wall surface W so that it overlaps the radio-controlled clock C. Therefore, the slave unit 11 located behind the radio-controlled clock C emits the pseudo standard radio wave, so that 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] The hanging device 13 also comprises a plate body 14 having a wall mounting hole 14A formed therein into which the tip Ft of the wall mounting fixture F is inserted, and a locking member 15 located below the wall mounting hole 14A and preventing the tip Ft of the wall mounting fixture F from coming loose. 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 and capable of moving towards and away from the wall mounting hole 14A, with the non-fixed part 15B being biased towards a state close to the wall mounting hole 14A.

[0084] In this case, when attaching the handset 11 to the wall mounting fixture F, the handset 11 is grasped with the right hand and the non-fixed portion 15B is moved to the right, away from the wall mounting hole 14A, so that the tip portion Ft of the wall mounting fixture F can be inserted into the wall mounting hole 14A through the gap formed by the movement of the non-fixed portion 15B.

[0085] Furthermore, after the tip Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A of the hanging fixture 13, the non-fixed portion 15B is biased toward the wall mounting hole 14A, thereby preventing the tip Ft of the wall mounting fixture F from slipping out of the wall mounting hole 14A.

[0086] This allows handset 11 to be easily attached to wall W with one hand while being prevented from coming off wall mount F. It can also be easily removed. As a result, the workability when attaching and removing handset 11 to wall W (wall mount F) can be improved. Moreover, since non-fixed portion 15B is provided on plate body 14 via plate spring member 15A, loss of parts can be prevented.

[0087] In this embodiment, plate 14 is formed with mounting hole 14D located below and continuous with wall-mounting hole 14A, and non-fixed portion 15B is biased toward a position separating wall-mounting hole 14A from mounting hole 14D. In this case, mounting hole 14D can be formed large, so that tip portion Ft of wall mounting fixture F can be easily inserted into mounting hole 14D. After inserting tip portion Ft of wall mounting fixture F into mounting hole 14D, handset 11 can be moved downward with non-fixed portion 15B moved away from wall-mounting hole 14A, allowing tip portion Ft of wall mounting fixture F to be inserted into wall-mounting hole 14A. After the tip Ft of the wall mounting fixture F is inserted into the wall mounting hole 14A, the non-fixed portion 15B is urged toward the position separating the wall mounting hole 14A and the mounting hole 14D, so that the locking member 15 can prevent the tip Ft of the wall mounting fixture F from slipping 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, and the plate 14 is provided with a guide portion 14G that guides the tip 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 pushed and 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 a 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.

[0089] Therefore, the tip Ft of the wall mounting fixture F can be easily inserted into the mounting hole 14D, which has a large opening area. When the handset 11 is moved downward with the tip Ft of the wall mounting fixture F inserted into the mounting hole 14D, the guide portion 14G guides the tip Ft toward the wall mounting hole 14A. Similarly to the guide portion 14G, the leaf spring member 15A and the inclined portion 15B2 also guide the tip Ft toward the wall mounting hole 14A. This allows the tip Ft of the wall mounting fixture F to be smoothly moved from the mounting hole 14D to the wall mounting hole 14A by the guide portion 14G and the like. Furthermore, since the non-fixed portion 15B can be displaced by being pushed by the tip Ft of the wall mounting fixture F when the tip Ft moves from the mounting hole 14D toward the wall hanging hole 14A, by moving the handset 11 downward with the tip Ft of the wall mounting fixture F inserted into the mounting hole 14D, the tip Ft of the wall mounting fixture F can be easily inserted into the wall hanging hole 14A. Moreover, after the tip Ft of the wall mounting fixture F is inserted into the wall hanging hole 14A, the non-fixed portion 15B returns to the position separating the wall hanging hole 14A and the mounting hole 14D, so that the tip Ft of the wall mounting fixture F can be prevented from coming out of the wall hanging 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 and forms a fixed end 15A1. The tip end of the leaf spring member 15A is attached to a non-fixed portion 15B, forming a free end 15A2 that is displaceable in the direction of bending deformation of the leaf spring member 15A. This allows the use of a simple leaf spring member 15A to bias the non-fixed portion 15B, thereby simplifying the configuration. Furthermore, by arranging the leaf spring member 15A at an angle, it can guide the tip end Ft of the wall mount F from the mounting hole 14D to the wall hanging hole 14A, just like the guide portion 14G.

[0091] In the above embodiment, the slave unit 11 is provided with an adjuster mechanism 16 that can adjust the relative position with respect to the radio-controlled clock C in the vertical direction (up and down), 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 is capable of receiving pseudo standard radio waves from the slave unit 11, the adjuster mechanism 16 may be omitted. In other words, the mounting fixture 16D may be fixed in a state where it cannot be displaced in the up and down direction.

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

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

[0094] In the above embodiment, the fixing portion is made of a flexible resin leaf spring member 15A, but the present invention is not limited to this. For example, the leaf spring member may be made of a metal material. Furthermore, other springs, such as a torsion coil spring, may also be used as the fixing portion.

[0095] In the above embodiment, the upper part of the wall-hanging hole 14A is formed into an Ω shape by the horizontally extending linear portion 14B and the 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-hanging hole may be formed into another shape such as a circle, a rectangle, or an inverted V.

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

[0097] 11 Sub-unit (Radio Clock Repeater) 12 Handset casing (casing) 13 Hook and loop fastener 14 Plate 14A Wall mounting hole 14D mounting hole 14F Partition 14G Information Department 15 Locking member 15A Leaf spring material (fixed part) 15A1 Fixed end 15A2 Free end 15B Non-fixed part 16 Adjuster mechanism 16D Mounting fixture 21 Handset body (main body) C Radio-controlled clock W wall F Wall Mounting Bracket Ft tip

Claims

1. A main unit that outputs pseudo standard radio waves, a casing in which the main body is housed; a hook provided on the casing for hooking the casing to a wall mounting fixture fixed to a wall surface; a fixture for fixing the radio-controlled clock to the front side of the casing opposite the wall surface so that the casing overlaps the wall-mounted radio-controlled clock; The latching device is a plate body having a wall mounting hole formed therein into which the tip of the wall mounting fixture is inserted; a locking member positioned below the wall mounting hole to prevent the tip of the wall mounting fixture from coming off, The locking member is a fixing portion fixed to the plate body; a non-fixed portion attached to the fixed portion and movable toward and away from the wall hanging hole, A radio-controlled clock repeater characterized in that the non-fixed portion is biased to a state in which it is close to the wall hanging hole.

2. The plate has a mounting hole formed therein, the mounting hole being located below the wall-hanging hole and continuing to the wall-hanging hole, 2. The radio-controlled clock repeater according to claim 1, wherein the non-fixed portion is biased toward a position that separates the wall-hanging hole and the mounting hole.

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

4. the fixing portion is a flexible leaf spring member, a base end side of the leaf spring member is attached to the plate body and serves as a fixed end; The radio-controlled clock repeater according to claim 1, characterized in that the non-fixed portion is attached to the tip side of the leaf spring member, and the non-fixed portion is a free end that can be displaced in the direction of bending deformation of the leaf spring member.

Images