JPS61247132A - Structure of pushbutton of wireless talking device - Google Patents

Abstract

PURPOSE:To prevent urgent notice from being sensed by the 3rd party by providing a switch holding the closing state by pushing strongly the pushbutton main body incorporatedly to a conventional pushbutton switch. CONSTITUTION:The pushing operation of a pushbutton main body 26 is restricted by a chevron type part 31a of a contact spring 31 projected inwardly to a case 29 normally. Thus, a contact 27 is pressed into contact with the chevron part 31a to conduct the spring 31 with the contact 27 thereby attaining the operation as the 1st switch. In pushing in strongly downward the pushbutton main body 26 over the operating force of the 1st switch, the spring 31 is pushed outwardly by an elastic force and the contact 27 is pressed into contact with the downward the contact spring 32. The operation as the 2nd switch is performed by conducting the spring 32 with the contact 27. Thus, urgent notice is not perceived by the 3rd party.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a push button structure of a wireless communication device that can make an emergency report using a push button used for a callback. Recently, it has become widely used because it does not require any construction work and has the advantage of not damaging the aesthetic appearance. Therefore, it is desirable to be able to use this wireless communication device to make emergency calls from places where valuables such as jewelry are handled, places where cash is handled, and as a means of notifying changes in the physical condition of important persons, elderly people, etc. ing.

[Object of the Invention] The present invention has been made in view of the above-mentioned points, and its object is to provide a push button structure of a wireless communication device that can be used for emergency notification.

[Disclosure of the Invention] (Embodiment) FIG. 1 is a diagram showing the structure of a push button 22 according to an embodiment of the present invention.
A push button body 26 which is exposed bfJt and has a plurality of engaged parts formed on an outer wall 26c, a contactor 27 attached to the lower surface of the push button body 26, and a biasing spring that biases the push button body 26 upward. 28 constitutes a first switch that restricts downward movement of the push button body 26 during normal pressing operation of the push button body 26 and is closed when the contact 27 comes into contact with the push button body 26. a plurality of first contact springs 31 formed with an engaging portion that engages with the engaged portion when strongly pressed and holds the push button body 26 in the pushed position; and the push button body 2.
A second contact spring 32 constituting a second switch that is closed at the lower part of the push button body 26 when the engaging part of the first contact spring 31 engages with the engaged part of 6. It is. More specifically, the push button main body 26 has a U-shaped cross section with an open bottom, a recess 35 is formed as an engaged portion in the outer wall 26c, a stepped portion 26a is formed around the upper surface 2b, and the case 29 is formed on both sides. An insertion hole 30 is bored in the wall, and the push button body 26
The upper surface is opened to expose the upper surface 26b, and the step 26a of the push button body 26 engages with the edge of the opening. remains engaged with the edge of the opening. moreover,
A rod 34 is provided protruding below the upper bottom surface 2 (3d) of the push button body 26 to position the biasing spring 28, and the contact spring 31 has a doglegged portion 31a as an engaging portion formed at its tip. , insert the doglegged portion 31a into the insertion hole 30 and insert the case 29.
The case 29 is moved so that the corner of the doglegged portion 31a protrudes inward.
The contact springs 32 are arranged on both sides of the case 29, and the case 29 is placed on the base 33, and both contact springs 31 and 32 are attached by soldering. There is.

The operation of this push button 22 is as follows. Under normal conditions, the push button body 26 is restricted from being pressed by the doglegged portion 31a of the contact spring 31 that protrudes inward from the case 29. Therefore, the contact 27 comes into contact with the dogleg-shaped portion 31a of the contact spring 31, and conducts the contact spring 31 through the contact 27, thereby operating as a first switch. In this switch, when the pressure is released by the biasing force of the biasing spring 28, the switch automatically returns to the switch-off state. Next, in case of an emergency, the push button body 26
By pushing downward more strongly than the normal first switch operation, the contact spring 31 is pushed outward by elastic force and the contact 27 comes into contact with the contact spring 32 below. Then, the second contact spring 32 is electrically connected by the contact 27
It acts as a switch. At this time, the push button body 2
The corners of the doglegged portion 31m of the contact spring 31 engage with the recesses 35 formed on both side walls of the push button body 26, and the push button body 26
8 prevents the contact 27 from being biased upward, and the contact state between the contact 27 and the contact spring 32 is maintained. The above is the operation of this embodiment. In addition to this embodiment, the structure shown in FIG.
2 constituted the second switch, but this push button 22
In ``, the contact spring 32'' forms a normally open contact, α, and the length of the rod 34'' that positions the biasing spring 28'' is shortened, and the lower end of the rod 34'' is The second switch is closed by pressing down the upper contact spring 32° so that it comes into contact with the lower contact spring 32°, and other operations are substantially the same as in the above-mentioned embodiment. Since there is, I will omit the explanation.

Next, a circuit configuration of a wireless communication device using the above-mentioned push button 22 or 22' will be explained. In this embodiment, a wireless communication device that performs transmission and reception using one antenna 1 will be explained as an example.

The reception section of this wireless normal device includes a bandpass filter 7 that passes only signals in a predetermined frequency band necessary for reception among the signals received by the antenna 1, and a high frequency amplification circuit that amplifies the signal that has passed through the bandpass filter 7. 8 and
A mixer 9 that converts a received signal into an intermediate frequency signal, a bandpass filter 10 that passes only the intermediate frequency signal, and a demodulation circuit 11 that detects a modulated signal indicating the transmission content from the intermediate frequency signal, which is included in the demodulated signal. It is comprised of a low-pass filter 12 that removes harmonic components and noise components, an amplifier circuit 13 that amplifies the output of the low-pass filter 12, and a speaker 21 that is driven by the output of the amplifier circuit 13. On the other hand, the transmitting section includes a micro to input an audio signal, etc., an amplifier circuit 5 to amplify the input audio signal, a modulation circuit 4 to modulate a carrier wave using the power of the amplifier circuit 5, and a desired transmission of the modulated carrier wave. It consists of a frequency multiplier circuit 3 that multiplies the frequency by 11, and a bandpass filter 2 that removes signals in one main frequency band for transmission. In this embodiment, the PLL circuit 15 is also used as a local oscillation circuit in the transmitting section and the receiving section, and in the receiving section, the output is input to the mixer 9 via a frequency multiplier circuit 14 that multiplies the output of the PLL circuit 15. There is. The PLL circuit 15 also uses a crystal oscillator 17 as a reference frequency oscillation circuit, and includes channel setting means 16 for setting the frequency of transmission and reception. Furthermore, in order to save power, a control circuit 18 consisting of a CPU is provided which controls each circuit of the receiving section indicated by a broken line so that it operates intermittently, and the control circuit 18 is used as a peripheral circuit. The input signal, call signal, or notification signal is passed through the output of the demodulation circuit 11 to the control circuit 1.
8, and an oscillation circuit 20 which is driven by a control circuit 18 and which oscillates a ringing signal so that a ringing tone is emitted from a speaker 21. Since the operation of this embodiment having the above-described circuit configuration is almost the same as that of a normally used transmitting/receiving circuit, a detailed explanation of the operation will be omitted, and the features of this embodiment will be explained. When the power switch SW is turned on or intermittent reception is started, the control circuit 18 first operates the PLL circuit 15, and after the chattering time of the power switch SW has elapsed, operates the circuits of the other receiving sections to enable reception. .

When a signal (for example, a calling signal) is input during this intermittent reception, the output of the demodulation circuit 11 is inputted to the control circuit 18 via the low-pass filter 19 to detect the presence or absence of the calling signal. The oscillation circuit 20 is driven to emit a recime sound from the speaker 21 to notify that there is a call, and the power supply to the receiving section is maintained to maintain the operating state of the receiving section. Similarly, the transmitting section can be created as well. state. After the end of the call, no input signal is generated at the output of the mixer 9, and when a predetermined period of time has elapsed, the power supply to each circuit of the battery is stopped, thereby saving power. Also, after the end of the call, the output of the amplifier circuit 5 is detected,
Similarly, the supply of power by the battery is also stopped when there is no output for a predetermined period of time or more.

Furthermore, if a call signal is received at the time of reception and a chime sound is emitted, the call state is established, and a modulation signal is not generated at the output of the amplifier circuit 5 for a predetermined period of time or longer, it is determined that the user did not notice the call, and the oscillation circuit By driving 20 again, a chime sound is sounded from the station 21 to notify the user that there is a call. The above is the call operation of the wireless communication device.
The two relationships will be explained. With the above-described configuration, there is provided a push button which is equipped with a first switch that operates as a call-up switch during normal operations, and a built-in second switch that maintains a conductive state by pressing strongly for notification in an emergency; and the push button 22. A control circuit 18 that detects the operating state of
and a tone signal oscillation circuit 23 which oscillates a calling signal for telephone calls when the control circuit 18 detects that the push button 22 has performed a calling operation; and the control circuit 18 detects that the push button 22 has performed a notification operation. The system is equipped with a tone signal oscillation circuit 24 that oscillates an emergency notification signal, and notification means that makes different notifications depending on the calling signal and the notification signal sent from the other party. More specifically, the control circuit 18 detects which switch of the push button 22 is turned on,
Tone signal oscillation circuit 2 generates signals according to normal and emergency situations.
3., 24 are driven to emit. The outputs of the tone signal oscillation circuits 23 and 24 are input to the modulation circuit 4 and modulated together with the audio signal and the like. Here, when the control circuit 18 detects that the push button 22 has performed an emergency operation, the control circuit 18 normally switches the wireless communication device A, which is capable of two-way communication, as shown in FIG. 5, as shown in FIG. The wireless communication device A that has issued the notification signal is placed in a state where it can only transmit, and the wireless communication device A that has received the notification signal is controlled so that it can only perform reception operations. As a result, for example, when a burglar breaks in and a report is made by pressing the push button 22, the party receiving the report can hear the status of the party making the report, but the intruder does not know this. , when receiving a one-way notification, the control circuit 18 detects a tone signal from the output of the demodulation circuit 11 using the low-pass filter 19,
When the tone signal is for normal calling, the oscillation circuit 20 is driven to emit a normal chime sound from the speaker 21. Further, when a tone signal for reporting an emergency is detected, a chime sound of a different tone is emitted from the oscillation circuit 20 and is displayed by the emergency display means 25 using a lamp or the like. Furthermore, the emergency state may be emitted as a voice using voice synthesis instead of a chime sound. In an emergency, the control circuit 18 stops the transmission state as described above,
Only receive data.

[Effects of the Invention 1] As described above, the present invention includes a push button body disposed within a case, the upper surface of which is exposed from the case, and a plurality of engaged portions formed on the outer wall; a contactor that urges the pushbutton body upward; a biasing pin that restricts downward movement of the pushbutton body during normal pressing operations of the pushbutton body, and is closed when the contactor comes into contact with the pushbutton body; A plurality of first contacts that constitute a first switch and are formed with an engaging portion that engages the engaged portion when the push button body is strongly pressed downward and holds the push button body in the pushed position. a second contact spring constituting a second switch that is closed at the lower part of the push button body when the engaging portion of the first contact spring engages with the engaged portion of the push button body; Therefore, by operating the push button body normally, it can be used as an automatic return type switch, and by pushing the push button body firmly, it can be used as a switch that maintains the closed state. By being able to perform two different operations, the wireless communication device can be used as an emergency call device.
If the first switch is used for calling during normal operation and the second switch is used as an emergency switch, it is possible to make a report using the push button used for calling during normal times. This has the effect of making it possible for the other party to not notice that you have made an emergency call.

[Brief explanation of drawings]

wI1 is a sectional view showing the configuration of the main part of an embodiment of the present invention, FIG. 2 is a sectional view showing the structure of other main parts, FIG. The figure is an explanatory diagram of the same operation as above. A is for wireless calls! device, 18 is a control circuit, 22.2
2゛ is a push button, 23 and 24 are tone signal oscillation circuits, 25 is an emergency display means, 26 is a push button body, 26b is a top surface, 26c
is the outer wall, 27 is the contact, 28 is the biasing spring, 31 and 32 are the contact springs, 31a is the (shaped part), and 29 is the case.

Claims (1)

[Claims] (1) A push button body disposed inside a case, the upper surface of which is exposed from the case, and a plurality of engaged parts formed on the outer wall; a contactor attached to the lower surface of the push button body; and a first switch that restricts downward movement of the push button body during normal pressing operation of the push button body and is closed when the contact comes into contact with the push button body. a plurality of first contact springs each having an engaging portion that engages with the engaged portion when strongly pressed downward and holds the push button body in the pushed position; A push button structure for a wireless communication device, comprising a second contact spring constituting a second switch that is closed at a lower part of the push button body when an engaging portion of the first contact spring is engaged.