Multifunctional personal self-defense safety alarm

Abstract

The invention relates to the technical field of alarms, and particularly discloses a multifunctional personal self-defense safety alarm which comprises an alarm body and an alarm bolt pull ring connected with the alarm body in a pluggable mode, a fixed installation ring is arranged on the alarm body, a main control circuit board is arranged in the alarm body, and the alarm bolt pull ring is connected with the alarm body in a pluggable mode. The main control circuit board is provided with a loudspeaker and an alarm switch abutting against the alarm bolt pull ring, the main control circuit board comprises an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are both electrically connected with the MCU circuit, and the loudspeaker and the alarm switch are electrically connected with the power amplifier circuit and the MCU circuit respectively. When the alarm is used, the fixed mounting ring on the alarm body is fixedly connected with clothes or a backpack of a human body, the alarm bolt pull ring is pulled out in an emergency, the recording circuit is arranged to record alarm sound according to user requirements, the functions are diversified, and the use requirements of the user can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of alarm devices, in particular to a multifunctional personal self-defense safety alarm device. Background Art

[0002] At present, with the development of society, more and more attention is paid to the personal safety of citizens. In case of emergencies, it is necessary to use an alarm to seek help. The alarm mainly pulls the alarm pin away from the alarm body, thereby triggering the alarm, scaring away bad guys by making a sound, and at the same time attracting the attention of people around to facilitate the user to seek help.

[0003] After searching, the Chinese utility model patent with patent application number CN202122598904.7 discloses an emergency alarm for personal self-defense, including an alarm body and an alarm plug mounted on the alarm body, the alarm plug is movably connected to the alarm body and is semi-pull-out and plug-in through limiting structures respectively arranged on the two, the limiting structure includes a limiting block arranged on the alarm body and a limiting groove arranged on the alarm plug and cooperates with the limiting block to achieve limiting. The emergency alarm for personal self-defense provided by the utility model does not need to reset the alarm plug to the alarm body, so that the user can quickly reset the alarm.

[0004] Although the existing alarm can meet the basic use needs, it still has defects to a certain extent. First, the design of the alarm is to connect the human body's clothes or backpack through its alarm pin, rather than the alarm body. Therefore, when the user encounters an emergency such as a sudden attack or hostage from behind and pulls out the alarm pin, there will be two fatal defects. First, the alarm pin is fixed on the human body's clothes or backpack. The bad guys can easily reset and turn off the alarm as long as they grab the alarm body. Second, the alarm body is not fixed on the human body's clothes or backpack, and it is easy for the bad guys to grab and throw it away, resulting in the user and the alarm sound not being in the same place, and the alarm function is lost. There is a possibility that the rescuer follows the alarm sound to the scene, but the person has been dragged away from the alarm, and the meaning of self-defense is lost. These two defects will put the user at great risk of life safety during use. Secondly, the alarm sound emitted by the existing alarm is very similar to the car alarm sound. When the user uses the alarm, there is a high probability that it will be mistaken for the car alarm sound. When people hear this sound, they may not think that someone is killed or needs help at the first time, but mistakenly think that someone's vehicle is scratched, which will reduce the chance of being rescued when they are really in danger. 3. Existing alarms use resistors that consume a lot of power, have short standby time, and have short battery life. 4. Personal self-defense alarms are not only used when encountering bad guys. When there is a sudden illness or traffic accident, you need to get quick help through the alarm sound of the personal alarm. However, the existing alarm does not have a recording function. It only has a single mechanical audio alarm sound that cannot record the alarm sound according to user needs. The function is relatively single and it is difficult to meet the user's needs in different unexpected situations. 5. The decibel of the existing alarm is 130 decibels, but when the decibel exceeds 120 decibels, it will stimulate the eardrum. Even if it can scare away bad guys, it may pierce the eardrum, so it is not suitable for the elderly and children. 6. The design of the existing alarm will significantly reduce the volume once it encounters a flat position, reducing the possibility of the user being discovered and assisted. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional personal self-defense safety alarm in view of the above-mentioned defects of the prior art.

[0006] In order to solve the above technical problems, the technical solution of the present invention is:

[0007] A multifunctional personal self-defense safety alarm comprises an alarm body and an alarm pin pull ring pluggably connected to the alarm body, the alarm body is provided with a fixed mounting ring, a main control circuit board is provided in the alarm body, a speaker and an alarm switch abutting against the alarm pin pull ring are provided on the main control circuit board, the main control circuit board comprises an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are both electrically connected to the MCU circuit, and the speaker and the alarm switch are electrically connected to the power amplifier circuit and the MCU circuit respectively.

[0008] Preferably, a circuit board mounting groove and a speaker groove are provided in the alarm body, and the main control circuit board and the speaker are respectively located in the circuit board mounting groove and the speaker groove.

[0009] Preferably, an alarm pin pull ring connecting hole connected to the circuit board mounting groove is provided at the bottom of the alarm body, an alarm pin pull ring buckle matching the alarm pin pull ring connecting hole is provided on the outer side of the alarm pin pull ring, and the alarm switch is located on the left side of the alarm pin pull ring connecting hole.

[0010] Preferably, the MCU circuit includes an MCU main control chip U1, a recording button S1, a broadcast button S2, a decoding chip U5, a voltage regulator tube D1 and a voltage regulator tube D2. The recording button S1 and the broadcast button S2 are both connected to the MCU main control chip U1, and the MCU main control chip U1, the voltage regulator tube D1 and the voltage regulator tube D2 are all connected to the decoding chip U5.

[0011] Preferably, the recording circuit includes a microphone M1, a resistor R4, a resistor R6, a capacitor C8 and a capacitor C10, the resistor R6 is connected to the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively, and the capacitor C8 is connected to the decoding chip U5.

[0012] Preferably, the power amplifier circuit includes an audio power amplifier chip U2, a resistor R7, a resistor R10, a resistor R14, a capacitor C5, a capacitor C7, a capacitor C12 and a speaker interface CON2. The audio power amplifier chip U2 is respectively connected to the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the speaker interface CON2, and the speaker interface CON2 is connected to the speaker.

[0013] Preferably, the main control circuit board also includes a FLASH storage circuit, the FLASH storage circuit includes a storage chip U3, a capacitor C2 and a resistor R8, and the storage chip U3 is connected to the decoding chip U5, the capacitor C2 and the resistor R8 respectively.

[0014] Preferably, the main control circuit board also includes a charging circuit, which includes a charging interface TYPEC, a charging management chip U4, a light-emitting diode LED3 and a light-emitting diode LED4, and the charging management chip U4 is respectively connected to the MCU main control chip U1, the charging interface TYPEC, the light-emitting diode LED3 and the light-emitting diode LED4.

[0015] Preferably, a protrusion and a plurality of sound through holes communicating with the speaker groove are provided on the back side of the alarm body.

[0016] By adopting the above technical scheme, the present invention provides a multifunctional personal self-defense safety alarm, which has the following beneficial effects: a fixed installation ring is arranged on the alarm body of the multifunctional personal self-defense safety alarm, a main control circuit board is arranged in the alarm body, a speaker and an alarm switch that abuts against the alarm latch pull ring are arranged on the main control circuit board, the main control circuit board includes an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are both electrically connected to the MCU circuit, the speaker and the alarm switch are electrically connected to the power amplifier circuit and the MCU circuit respectively, when in use, the fixed installation ring on the alarm body is fixedly connected to the human body's clothing or backpack, and the alarm latch pull ring can be pulled out in an emergency. This design can ensure that when the user encounters an accident, no matter how the user moves, the alarm sound will always surround the human body to sound the alarm, and the user can get quickly. the alarm pin pull ring is not connected to the human body's clothing or backpack, which can prevent bad guys from easily resetting and shutting down the alarm when in danger. At the same time, when encountering danger, the user can throw the alarm pin pull ring to a position far away from the bad guys, which can not only distract the bad guys' attention to save themselves but also ensure that the alarm sound will not be easily turned off; by setting the recording circuit to record the alarm sound according to user needs, the function is diversified, not only suitable for sending out alarm sounds when encountering bad guys, but also suitable for the elderly to record personal medical information, which is convenient for people around and rescue personnel to understand personal information faster when fainting, speed up rescue, and convenient for children to record relevant information as evidence, etc., which can meet the needs of more users; the alarm sound can adjust the alarm sound decibel according to the user's recording sound volume, which can be adjusted to 40-120 decibels according to needs, which is more suitable for the elderly and children; the speaker is used instead of the buzzer to effectively extend the standby time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An exploded view of the present invention;

[0018] Figure 2 A perspective view of the present invention;

[0019] Figure 3 A three-dimensional diagram of the present invention from another angle;

[0020] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0021] Figure 5 This is a circuit schematic diagram of the main control circuit board in the present invention;

[0022] In the figure, 1-alarm body, 2-alarm pin pull ring, 3-fixed mounting ring, 4-main control circuit board, 5-speaker, 6-alarm switch, 7-circuit board mounting groove, 8-speaker groove, 9-alarm pin pull ring snap hole, 10-alarm pin pull ring buckle, 11-protrusion, 12-sound through hole. DETAILED DESCRIPTION

[0023] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] like Figure 1-5As shown, the multifunctional personal self-defense safety alarm includes an alarm body 1 and an alarm plug pull ring 2 plug-in connected to the alarm body 1, a fixed mounting ring 3 is provided on the alarm body 1, a main control circuit board 4 is provided inside the alarm body 1, a speaker 5 and an alarm switch 6 abutting against the alarm plug pull ring 2 are provided on the main control circuit board 4, the main control circuit board 4 includes an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are both electrically connected to the MCU circuit, and the speaker 5 and the alarm switch 6 are electrically connected to the power amplifier circuit and the MCU circuit respectively. It can be understood that the alarm body 1 includes an upper shell and a lower shell snap-connected to the upper shell, which can be made of hard plastic, etc., and the present invention is not limited thereto. Compared with all similar products on the market that use buzzer sheets, the present invention uses a speaker that can be customized according to user needs.

[0027] Specifically, a circuit board mounting groove 7 and a speaker groove 8 are provided in the alarm body 1, and the main control circuit board 4 and the speaker 5 are respectively located in the circuit board mounting groove 7 and the speaker groove 8; an alarm pin pull ring clamping hole 9 connected to the circuit board mounting groove 7 is provided at the bottom of the alarm body 1, and an alarm pin pull ring buckle 10 adapted to the alarm pin pull ring clamping hole 9 is provided on the outer side of the alarm pin pull ring 2, and the alarm switch 6 is located on the left side of the alarm pin pull ring clamping hole 9. It can be understood that the alarm switch 6 adopts a hidden design. When the alarm pin pull ring 2 is inserted into the alarm pin pull ring clamping hole 9, the inner side of the alarm pin pull ring 2 presses the alarm switch 6 inward. At this time, the alarm switch 6 is in an open circuit state, and the speaker 5 does not play the alarm sound. When the alarm pin pull ring 2 is pulled out of the alarm pin pull ring clamping hole 9, the alarm switch 6 is always grounded, and the speaker 5 plays the alarm sound. The back of the alarm body 1 is provided with a protrusion 11 and a plurality of sound through holes 12 connected to the speaker groove 8. By providing the protrusion 11, the risk of the sound through hole 12 being blocked by the plane and reducing the volume when the alarm body 1 falls on a flat position can be avoided.

[0028] Specifically, the MCU circuit includes an MCU main control chip U1, a recording button S1, a broadcast button S2, a decoding chip U5, a voltage regulator D1 and a voltage regulator D2. The recording button S1 and the broadcast button S2 are connected to the MCU main control chip U1, and the MCU main control chip U1, the voltage regulator D1 and the voltage regulator D2 are connected to the decoding chip U5. It can be understood that the MCU main control chip U1 can be a single-chip microcomputer chip, etc., which can be used to control the state switching of recording and playing alarm sounds. The decoding chip U5 can be a general audio decoding chip, etc. When the recording button S1 is pressed, it is in the recording state, and when the broadcast button S2 is pressed, it is in the alarm sound playing state.

[0029] Specifically, the recording circuit includes a microphone M1, a resistor R4, a resistor R6, a capacitor C8 and a capacitor C10, the resistor R6 is connected to the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively, and the capacitor C8 is connected to the decoding chip U5. It can be understood that the microphone M1 is used to receive audio signals and transmit them to the decoding chip U5 for audio decoding.

[0030] Specifically, the power amplifier circuit includes an audio power amplifier chip U2, a resistor R7, a resistor R10, a resistor R14, a capacitor C5, a capacitor C7, a capacitor C12 and a speaker interface CON2. The audio power amplifier chip U2 is respectively connected to the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the speaker interface CON2, and the speaker interface CON2 is connected to the speaker. It can be understood that the audio power amplifier chip U2 adopts the HAA2018 chip, which is used to amplify the audio signal and then output it.

[0031] Specifically, the main control circuit board also includes a FLASH storage circuit, which includes a storage chip U3, a capacitor C2 and a resistor R8, and the storage chip U3 is connected to the decoding chip U5, the capacitor C2 and the resistor R8 respectively. It can be understood that the storage chip U3 can be a general storage chip, etc., which can be used to store the recorded alarm sound.

[0032] Specifically, the main control circuit board also includes a charging circuit, which includes a charging interface TYPEC, a charging management chip U4, a light emitting diode LED3 and a light emitting diode LED4. The charging management chip U4 is respectively connected to the MCU main control chip U1, the charging interface TYPEC, the light emitting diode LED3 and the light emitting diode LED4. It can be understood that the charging interface TYPEC is used to access an external power supply to power the above-mentioned main control circuit board 4. The charging management chip U4 can be a TP4057 chip, etc. The light emitting diode LED3 and the light emitting diode LED4 are both charging indicator lights.

[0033] It can be understood that the present invention has a reasonable design and a unique structure. When in use, the fixed mounting ring 3 on the alarm body 1 is fixedly connected to the human body's clothing or backpack. When encountering an emergency, the alarm pin pull ring 2 can be pulled out. Even if the alarm pin pull ring 2 is thrown away, the alarm effect can be maintained. This design can ensure that when the user encounters an accident, no matter how the user moves, the alarm sound always surrounds the human body to sound an alarm, so that rescue can be obtained quickly (at this time, the alarm body 1 has not been separated from the user end, while the traditional alarm will be far away from the user end after being pulled out and thrown away, and the alarm sound will also be far away from the user end, and the alarm effect will be lost); the alarm pin pull ring is not connected to the human body's clothing or backpack to prevent bad guys from easily resetting and turning off the alarm when in danger. At the same time, when encountering danger, the user can throw the alarm pin pull ring away from the bad guys. Position, can not only distract the bad guys to save yourself but also ensure that the alarm sound will not be easily turned off; by setting the recording circuit to record the alarm sound according to user needs, the function is diversified, not only suitable for sending out alarm sounds when encountering bad guys, but also suitable for the elderly to record personal medical information, when fainting, it is convenient for people around and rescue personnel to understand personal information faster and speed up rescue, and it is convenient for children to record relevant information as evidence, etc., which can meet the needs of more users; the alarm sound can adjust the alarm sound decibel according to the user's recording sound volume, which can be adjusted to 40-120 decibels according to needs, which is more suitable for the elderly and children; the speaker is used instead of the buzzer to effectively extend the standby time; the raised design on the back of the product effectively prevents the risk of the alarm body 1 falling on a flat position to reduce the volume.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A multifunctional personal self-defense safety alarm, characterized in that: It includes an alarm body and an alarm pin pull ring which is plugged and unplugged with the alarm body, the alarm body is provided with a fixed mounting ring, the alarm body is provided with a main control circuit board, the main control circuit board is provided with a speaker and an alarm switch which abuts against the alarm pin pull ring, the main control circuit board includes an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are both electrically connected to the MCU circuit, and the speaker and the alarm switch are electrically connected to the power amplifier circuit and the MCU circuit respectively.

2. The multifunctional personal self-defense safety alarm according to claim 1, characterized in that: A circuit board installation groove and a speaker groove are arranged in the alarm body, and the main control circuit board and the speaker are respectively located in the circuit board installation groove and the speaker groove.

3. The multifunctional personal self-defense safety alarm according to claim 1, characterized in that: An alarm pin pull ring connection hole connected to the circuit board mounting groove is provided at the bottom of the alarm body, an alarm pin pull ring buckle matched with the alarm pin pull ring connection hole is provided on the outer side of the alarm pin pull ring, and the alarm switch is located on the left side of the alarm pin pull ring connection hole.

4. The multifunctional personal self-defense safety alarm according to claim 1, characterized in that: The MCU circuit includes an MCU main control chip U1, a recording button S1, a broadcast button S2, a decoding chip U5, a voltage regulator D1 and a voltage regulator D2. The recording button S1 and the broadcast button S2 are both connected to the MCU main control chip U1, and the MCU main control chip U1, the voltage regulator D1 and the voltage regulator D2 are all connected to the decoding chip U5.

5. The multifunctional personal self-defense safety alarm according to claim 4, characterized in that: The recording circuit includes a microphone M1, a resistor R4, a resistor R6, a capacitor C8 and a capacitor C10. The resistor R6 is connected to the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively. The capacitor C8 is connected to the decoding chip U5.

6. The multifunctional personal self-defense safety alarm according to claim 4, characterized in that: The power amplifier circuit includes an audio power amplifier chip U2, a resistor R7, a resistor R10, a resistor R14, a capacitor C5, a capacitor C7, a capacitor C12 and a speaker interface CON2. The audio power amplifier chip U2 is respectively connected to the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the speaker interface CON2, and the speaker interface CON2 is connected to the speaker.

7. The multifunctional personal self-defense safety alarm according to claim 4, characterized in that: The main control circuit board also includes a FLASH storage circuit, which includes a storage chip U3, a capacitor C2 and a resistor R8. The storage chip U3 is connected to the decoding chip U5, the capacitor C2 and the resistor R8 respectively.

8. The multifunctional personal self-defense safety alarm according to claim 4, characterized in that: The main control circuit board also includes a charging circuit, which includes a charging interface TYPEC, a charging management chip U4, a light-emitting diode LED3 and a light-emitting diode LED4. The charging management chip U4 is respectively connected to the MCU main control chip U1, the charging interface TYPEC, the light-emitting diode LED3 and the light-emitting diode LED4.

9. The multifunctional personal self-defense safety alarm according to claim 2, characterized in that: The back side of the alarm body is provided with a protrusion and a plurality of sound through holes communicated with the speaker groove.

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