Multifunctional personal self-defense safety alarm

Abstract

The utility model 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 users can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to alarm technology field especially relates to a multifunctional personal self-defense safety alarm. BACKGROUND

[0002] At present, with the development of society, more and more attention is paid to the personal safety of citizens, which is specifically embodied in the personal safety of students, children, women and the elderly. When an emergency occurs, help needs to be sought through an alarm. The alarm mainly pulls the alarm pin out of the alarm body to trigger the alarm, scares away the bad guys by making a sound, and attracts the attention of people around to facilitate the user to seek help.

[0003] After retrieval, the Chinese utility model patent with patent application number CN202122598904.7 discloses an emergency alarm for personal self-defense, which comprises an alarm body and an alarm pin installed on the alarm body. The alarm pin is movably connected with the alarm body and is half-pulled out of the alarm body through a limiting structure arranged on both of them. The limiting structure comprises a limiting block arranged on the alarm body and a limiting groove arranged on the alarm pin and cooperating 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 pin to the alarm body, which facilitates the user to quickly reset the alarm.

[0004] The existing alarm can meet the basic use requirements, but it still has various degrees of defects. First, the design of the alarm is to connect the clothes or backpack of the human body through the alarm bolt, instead of the alarm body. Therefore, when the user encounters a sudden attack from behind or is held hostage, and pulls out the alarm bolt, two fatal defects will occur. One: the alarm bolt is fixed on the clothes or backpack of the human body, and the bad person can easily reset and turn off the alarm by seizing the alarm body. Two: the alarm body is not fixed on the clothes or backpack of the human body, and it is easy to be seized by the bad person and thrown away, so that the user and the alarm sound are not in the same range, and the alarm function is lost. The rescuer follows the alarm sound to the scene, but the person involved has been dragged away from the location of the alarm, and the self-defense significance is lost. These two defects will cause great risk to the user's life safety during use. Secondly, the alarm sound of the existing alarm is similar to the car alarm sound. When the user uses the alarm, there is a high probability of being mistaken for a car alarm sound. When people hear this sound, they may not think of someone being killed or needing help at first, but mistakenly think that someone's vehicle has been scratched. When a real danger occurs, it will reduce the chances of being rescued. Thirdly, the existing alarm uses a resistor, which consumes a lot of power, has a short standby time, and has a short battery life. Fourthly, the function of the personal self-defense alarm is not only used when encountering bad people. When a sudden illness, domestic violence, or traffic accident occurs, the alarm sound of the personal alarm can be used to obtain rapid rescue. However, the existing alarm does not have a recording function, and only has a single mechanical audio alarm sound, which cannot record the alarm sound according to the user's demand. The function is relatively single, and it is difficult to meet the user's use demand in different emergency situations. Fifthly, the existing alarm has a decibel of 130 decibels. However, when the decibel exceeds 120 decibels, it will stimulate the eardrum. Even if it can scare away the bad person, it may also pierce the eardrum. Therefore, it is not suitable for the elderly and children. Sixthly, the design of the existing alarm will obviously reduce the volume when it encounters a flat position, which reduces the possibility of the user being discovered and assisted. Practical new type content

[0005] The technical problem to be solved by the utility model is to provide a multifunctional personal self-defense safety alarm according to the above defects of the prior art.

[0006] In order to solve the above technical problems, the technical scheme of the utility model is:

[0007] The utility model provides a multifunctional personal self -defence safety alarm, including alarm body and with alarm mortise pull ring of alarm body plug -in connection, be provided with fixed mounting ring on the alarm body, be provided with main control circuit board in the alarm body, be provided with loudspeaker and alarm switch of with alarm mortise pull ring on the main control circuit board, the main control circuit board includes MCU circuit, recording circuit and power amplifier circuit, recording circuit and power amplifier circuit all with MCU circuit electric connection, loudspeaker and alarm switch respectively with power amplifier circuit and MCU circuit electric connection.

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

[0009] Preferably, the bottom of the alarm body is provided with an alarm mortise pull ring clamping hole in communication with the circuit board mounting groove, the outer side of the alarm mortise pull ring is provided with an alarm mortise pull ring buckle matched with the alarm mortise pull ring clamping hole, and the alarm switch is located on the left side of the alarm mortise pull ring clamping hole.

[0010] Preferably, the MCU circuit includes an MCU main control chip U1, a recording key S1, a broadcasting key S2, a decoding chip U5, a voltage stabilizing tube D1 and a voltage stabilizing tube D2, the recording key S1 and the broadcasting key S2 are connected with the MCU main control chip U1, and the MCU main control chip U1, the voltage stabilizing tube D1 and the voltage stabilizing tube D2 are connected with 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 with the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively, and the capacitor C8 is connected with 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 loudspeaker interface CON2, the audio power amplifier chip U2 is connected with the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the loudspeaker interface CON2 respectively, and the loudspeaker interface CON2 is connected with the loudspeaker.

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

[0014] Preferably, the main control circuit board further comprises a charging circuit, the charging circuit comprising 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 being connected with the MCU main control chip U1, the charging interface TYPEC, the light emitting diode LED3 and the light emitting diode LED4 respectively.

[0015] Preferably, the back surface of the alarm body is provided with a protrusion and a plurality of sound through holes in communication with the loudspeaker groove.

[0016] With the above technical scheme, the multifunctional personal self-defense safety alarm has the following beneficial effects: the alarm body in the multifunctional personal self-defense safety alarm 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 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 electrically connected with the MCU circuit, the loudspeaker and the alarm switch are electrically connected with the power amplifier circuit and the MCU circuit respectively, the fixed mounting ring on the alarm body is fixedly connected with clothes or a backpack of a human body in use, and the alarm bolt pull ring can be pulled out in an emergency, so that the user can be ensured to send out an alarm sound around the human body at all times regardless of how the user moves to quickly obtain rescue; the alarm bolt pull ring is not connected with the clothes or the backpack of the human body, so that the user can throw the alarm bolt pull ring to a position far away from a bad person when danger is encountered, so as to not only disperse the attention of the bad person to obtain self-rescue, but also ensure that the alarm sound cannot be easily turned off; the recording circuit is arranged to record the alarm sound according to the user's demand, so that the function is diversified, the alarm sound is not only suitable for being sent out when a bad person is encountered, but also suitable for being used by the old to record personal medical information, so that the surrounding people and rescue personnel can quickly understand the personal information when the old person faints, rescue is accelerated, children can record relevant information as evidence when bullied or indecently assaulted, and more user use demands can be met; the alarm sound can be adjusted in decibels according to the size of the sound recorded by the user, and can be adjusted to 40-120 decibels according to the demand, so as to be more suitable for the old and children; the loudspeaker replaces the buzzer, so that the standby time is effectively prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is an exploded view of the utility model;

[0018] Figure 2 is a perspective view of the utility model;

[0019] Figure 3 is a perspective view of the utility model from another angle;

[0020] Figure 4It is the internal structure schematic view of the utility model;

[0021] Figure 5 It is the circuit principle view of the main control circuit board in the utility model;

[0022] In the drawing, 1-alarm body, 2-alarm bolt pull ring, 3-fixed mounting ring, 4-main control circuit board, 5-loudspeaker, 6-alarm switch, 7-circuit board installation recess, 8-loudspeaker recess, 9-alarm bolt pull ring clamping hole, 10-alarm bolt pull ring buckle, 11-protrusion, 12-sound through hole. DETAILED DESCRIPTION

[0023] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0025] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0026] As Figures 1-5As shown, the multifunctional personal self-defense alarm includes an alarm body 1 and an alarm bolt pull ring 2 in plug connection with the alarm body 1, the alarm body 1 is provided with a fixed mounting ring 3, the alarm body 1 is provided with a main control circuit board 4, the main control circuit board 4 is provided with a loudspeaker 5 and an alarm switch 6 abutting against the alarm bolt pull ring 2, 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 electrically connected with the MCU circuit, the loudspeaker 5 and the alarm switch 6 are electrically connected with 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 in buckle connection with the upper shell, which can be made of hard plastic material, etc., the utility model is not limited, compared with all similar products on the market which use a buzzer, the utility model uses a loudspeaker which can be customized according to user requirements.

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

[0028] Specifically, the MCU circuit includes an MCU main control chip U1, a recording key S1, a playing key S2, a decoding chip U5, a voltage stabilizing tube D1 and a voltage stabilizing tube D2, the recording key S1 and the playing key S2 are connected with the MCU main control chip U1, and the MCU main control chip U1, the voltage stabilizing tube D1 and the voltage stabilizing tube D2 are connected with 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 for controlling the state switching of recording and playing an alarm sound, the decoding chip U5 can be a general audio decoding chip, etc., when the recording key S1 is pressed, it is in a recording state, and when the playing key S2 is pressed, it is in a playing alarm sound 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 with the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively, and the capacitor C8 is connected with 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 connected with the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the speaker interface CON2 respectively, and the speaker interface CON2 is connected with the speaker. It can be understood that the audio power amplifier chip U2 adopts HAA2018 chip, which is used to amplify and output audio signals.

[0031] Specifically, the main control circuit board further includes a FLASH storage circuit, which includes a storage chip U3, a capacitor C2 and a resistor R8, the storage chip U3 is connected with 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, which can be used to store the entered alarm sound.

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

[0033] It can be understood that the utility model discloses reasonable design, unique structure, and when using, the fixed mounting ring 3 on the alarm body 1 is fixedly connected with the clothes or backpack of human body, and when encountering emergency, the alarm bolt pull ring 2 can be pulled out, even if the alarm bolt pull ring 2 is thrown away, 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 and issues an alarm, and quick rescue is obtained (at this time, the alarm body 1 does not separate from the user end, and the traditional alarm is far away from the user end after being pulled out and thrown away, and the alarm sound is also far away, and alarm effect is lost);The alarm bolt pull ring is not connected with the clothes or backpack of human body, which can avoid that the bad person easily resets and closes the alarm when danger occurs, and when danger occurs, the user can throw the alarm bolt pull ring to a position far away from the bad person, which not only can distract the bad person's attention and save oneself, but also can ensure that the alarm sound is not easily closed;The alarm sound is recorded according to user demand through the recording circuit, and the function is diversified, which is not only suitable for issuing an alarm sound when encountering a bad person, but also suitable for recording personal medical information for the old, and when fainting, surrounding people and rescue personnel can quickly understand personal information, speed up rescue, and children can record relevant information as evidence when bullied or indecently assaulted, so that more user use demands can be met;The alarm sound can be adjusted according to the size of the user recorded voice, and the alarm sound decibel can be adjusted to 40-120 decibels according to demand, which is more suitable for the old and children;The buzzer is replaced by a loudspeaker, and standby time is effectively prolonged;Through the convex design on the back of the product, the risk of the alarm body 1 falling in a flat position and reducing the volume is effectively prevented.

[0034] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A multifunctional personal self-defense alarm, characterized in that: The alarm body is provided with a fixed mounting ring, a main control circuit board, a horn and an alarm switch, the main control circuit board is provided with an MCU circuit, a recording circuit and a power amplifier circuit, the recording circuit and the power amplifier circuit are electrically connected with the MCU circuit, and the horn and the alarm switch are electrically connected with the power amplifier circuit and the MCU circuit respectively.

2. The multi-functional personal self-defense safety alarm of claim 1, wherein: The alarm body is provided with a circuit board mounting groove and a horn groove, and the main control circuit board and the horn are located in the circuit board mounting groove and the horn groove respectively.

3. The multi-functional personal self-defense safety alarm of claim 2, wherein: The bottom of the alarm body is provided with an alarm bolt pull ring clamping hole which is in communication with the circuit board mounting groove, the outer side of the alarm bolt pull ring is provided with an alarm bolt pull ring buckle which is matched with the alarm bolt pull ring clamping hole, and the alarm switch is located on the left side of the alarm bolt pull ring clamping hole.

4. The multi-functional personal self-defense safety alarm of claim 1, wherein: The MCU circuit comprises an MCU main control chip U1, a recording button S1, a broadcasting button S2, a decoding chip U5, a stabilizing tube D1 and a stabilizing tube D2, the recording button S1 and the broadcasting button S2 are connected with the MCU main control chip U1, and the MCU main control chip U1, the stabilizing tube D1 and the stabilizing tube D2 are connected with the decoding chip U5.

5. The multi-functional personal self-defense safety alarm of claim 4, wherein: The recording circuit comprises a microphone M1, a resistor R4, a resistor R6, a capacitor C8 and a capacitor C10, the resistor R6 is connected with the microphone M1, the resistor R4, the capacitor C8 and the capacitor C10 respectively, and the capacitor C8 is connected with the decoding chip U5.

6. The multi-functional personal self-defense safety alarm of claim 4, wherein: The power amplifier circuit comprises 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 horn interface CON2, the audio power amplifier chip U2 is connected with the decoding chip U5, the resistor R7, the resistor R10, the resistor R14, the capacitor C7, the capacitor C12 and the horn interface CON2 respectively, and the horn interface CON2 is connected with the horn.

7. The multi-functional personal self-defense safety alarm of claim 4, wherein: The main control circuit board further comprises a FLASH storage circuit, the FLASH storage circuit comprises a storage chip U3, a capacitor C2 and a resistor R8, and the storage chip U3 is connected with the decoding chip U5, the capacitor C2 and the resistor R8 respectively.

8. The multi-functional personal self-defense safety alarm of claim 4, wherein: The main control circuit board further comprises a charging circuit, the charging circuit comprises 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 connected with the MCU main control chip U1, the charging interface TYPEC, the light emitting diode LED3 and the light emitting diode LED4 respectively.

9. The multi-functional personal self-defense safety alarm of claim 2, wherein: The back of the alarm body is provided with a protrusion and a plurality of sound through holes which are in communication with the horn groove.

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