A forgetful plug alarm for a mobile phone charging cable

Abstract

The utility model discloses a kind of forget to pull alarm for mobile phone charging wire, it is related to mobile phone charging wire technical field.The utility model is displayed as 0.1 below when charging wire is pulled out, and normally closed end is in closed state, at this time, trigger voice module issues alarm, when continuously charging, display current is 0.1~6A, and normally open end is in disconnected state, at this time, voice module does not issue alarm, and the actual range of charging is set by the function adjustment button in button assembly one;Press the voice button in button assembly two, record the sound of alarm voice in combination with microphone, and voice broadcast is carried out through loudspeaker, and the purpose of single and multiple play is realized by single play button and electric play button, for prompting user, pull out charging wire, remove security risk.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone charging cable technology, and specifically to an alarm for forgetting to unplug a mobile phone charging cable. Background Technology

[0002] A charging cable is a cable specifically designed to provide power to electronic devices. Its core function is to connect the device to a power source for fast charging. Charging cables connect a power source (such as a wall socket or power bank) to the device via a USB interface, providing power to support device operation or charging. Their design focuses on current transmission efficiency, and they typically use copper wire with an insulating layer.

[0003] Even after a phone charging cable is disconnected from the phone and is no longer charging, the plug still retains power. If left plugged in for an extended period, the charging cable will gradually heat up, accelerating the aging of its internal components and materials. Over time, especially in humid environments or if the charging cable is damaged, the cable may start to smoke and potentially cause a fire. Therefore, we propose an alarm for unplugging a phone charging cable. Utility Model Content

[0004] The purpose of this utility model is to provide an alarm for forgetting to unplug a mobile phone charging cable in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] An alarm for forgetting to unplug a mobile phone charging cable includes: a protective box, inside which a current detection module and a voice module are installed. The current detection module includes a circuit board one, with a load connector located near the left edge of the front side of the circuit board one. A display, a control chip, a relay switch, and a button assembly one are mounted on the front side of the circuit board one. A power supply connector, a normally open terminal, a common terminal, and a normally closed terminal are located near the right edge of the front side of the circuit board one. The voice module includes a circuit board two, with a through-hole located near the left edge of the front side of the circuit board two. A microphone is located on the upper part of the front side of the circuit board two, and a button assembly two is located on the lower part of the front side of the circuit board two. A speaker is connected to the right side of the circuit board two via a wire.

[0007] Furthermore, sealing plates can be detachably installed on both sides of the protective box, and a heat dissipation groove is provided at the top of the protective box.

[0008] Furthermore, connecting blocks are installed at the upper end, lower end and rear end of the sealing plate, and connecting grooves are opened on both sides of the protective box, with the connecting blocks movably connected to the connecting grooves.

[0009] Furthermore, the button assembly one includes a mode setting button, a mode adjustment button, and a function adjustment button, and the mode setting button, mode adjustment button, and function adjustment button are evenly arranged in the lower part of the circuit board one in a horizontally opposite direction.

[0010] Furthermore, each of the four corners of the circuit board is provided with a connecting post, and the interior of the rear side of the protective box is provided with a connecting hole, and the outer end of the connecting post is inserted into the connecting hole.

[0011] Furthermore, the load connector is connected to the positive and negative terminals of the charging terminal, the power supply connector is connected to the positive and negative terminals of the load terminal, and the common terminal is connected to the voice module via a wire.

[0012] Furthermore, the second button assembly includes a voice button, a single play button, and a motorized play button, and the voice button, single play button, and motorized play button are evenly arranged in the lower part of the second circuit board in a horizontally opposite direction.

[0013] Furthermore, each of the four corners of the second circuit board is provided with a fixing post, and the inner wall of the front of the protective box is provided with a fixing hole, and the outer end of the fixing post is inserted into the fixing hole.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. When the charging cable is unplugged, the display shows 0 and the normally closed terminal is in the closed state. At this time, the voice module is triggered to issue an alarm. When charging continues, the display shows the current as 0.1 to 6A and the normally open terminal is in the open state. At this time, the voice module does not issue an alarm. The actual charging range can be set by adjusting the function button in the button assembly.

[0016] 2. The voice button in the second press button assembly of this utility model is combined with a microphone to record alarm voice sounds, which are then broadcast through a speaker. The single play button and the electric play button enable single and multiple playback, which are used to remind the user to unplug the charging cable and eliminate safety hazards. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is an exploded perspective view of the protective box and sealing plate in this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the current detection module in this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the voice module in this utility model.

[0021] Reference numerals: 10. Protective box; 20. Sealing plate; 30. Current detection module; 31. Circuit board one; 32. Load connector; 33. Display; 34. Control chip; 35. Relay switch; 36. Mode setting button; 37. Mode adjustment button; 38. Function adjustment button; 39. Power supply connector; 310. Normally open terminal; 311. Common terminal; 312. Normally closed terminal; 313. Connecting post; 40. Voice module; 41. Circuit board two; 42. Straight-through; 43. Microphone; 44. Voice button; 45. Single play button; 46. Motorized play button; 47. Speaker; 48. Fixing post. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] Please see Figure 1 - Figure 4 This utility model provides an alarm for forgetting to unplug a mobile phone charging cable, comprising: a protective box 10, inside which a current detection module 30 and a voice module 40 are installed. The current detection module 30 includes a circuit board 31, with a load connector 32 on the front of the circuit board 31 near the left edge, a display 33, a control chip 34, a relay switch 35, and a button assembly 1 on the front of the circuit board 31, and a power supply connector 39, a normally open terminal 310, a common terminal 311, and a normally closed terminal 312 on the front of the circuit board 31 near the right edge. The voice module 40 includes a circuit board 41, with a through-hole 42 on the front of the circuit board 41 near the left edge, a microphone 43 on the upper part of the front of the circuit board 41, a button assembly 2 on the lower part of the front of the circuit board 41, and a speaker 47 connected to the right side of the circuit board 41 via a wire.

[0024] The protective box 10 protects its internal components. The current detection module 30 is integrated with the multi-functional charging cable. The output end of the multi-functional charging cable has three different connectors to meet the charging needs of different mobile phones. The circuit board 31 ensures the installation stability of its surface components. The charging end of the charging cable is connected through the load connector 32, and the load end of the charging cable is connected through the power supply connector 39. The current detection module 30 is started and stopped through the control chip 34 and the relay switch 35. Specifically, when there is current, the relay switch 35 is in the open state, and when there is no current, the relay switch 35 is in the normally closed state. The current is displayed through the display 33. The voice module 40 is started and stopped through the common terminal 311. The circuit board 41 ensures the installation stability of its surface components. The microphone 43 is used for recording, and the speaker 47 is used for voice alarm.

[0025] When the charging cable is unplugged, the display 33 shows a current of 0.1A or less, and the normally closed terminal 312 is closed. At this time, the voice module 40 is triggered to issue an alarm. When charging continues, the display 33 shows a current of 0.1 to 6A, and the normally open terminal 310 is open. At this time, the voice module 40 does not issue an alarm. The actual charging range can be set by adjusting the function button 38 in button assembly one. Pressing the voice button 44 in button assembly two, combined with the microphone 43, records the alarm voice, which is then broadcast through the speaker 47. The single play button 45 and the electric play button 46 can be used to play the alarm once or multiple times, reminding the user to unplug the charging cable and eliminate safety hazards.

[0026] In this embodiment, preferably, sealing plates 20 can be detachably installed on both sides of the protective box 10, and a heat dissipation groove is provided at the upper end of the protective box 10; by setting the sealing plates 20, internal components can be prevented from falling off, and each sealing plate 20 has a through groove inside, which can be used to connect the charging cable to the current detection module 30 and the voice module 40, while the heat dissipation groove can be used to dissipate heat when the current detection module 30 and the voice module 40 are working.

[0027] In this embodiment, preferably, connecting blocks are installed at the upper end, lower end and rear end of the sealing plate 20, and connecting grooves are opened on both sides of the protective box 10. The connecting blocks are movably connected to the connecting grooves. By setting the connecting grooves, space can be provided for the sliding installation of the connecting blocks. With the cooperation of the connecting blocks and the connecting grooves, the connection stability between the sealing plate 20 and the protective box 10 can be guaranteed, and the sealing plate 20 can also be disassembled.

[0028] In this embodiment, preferably, the button assembly includes a mode setting button 36, a mode adjustment button 37, and a function adjustment button 38, and the mode setting button 36, the mode adjustment button 37, and the function adjustment button 38 are evenly arranged in the lower part of the circuit board 31 in a horizontal reverse direction; the mode setting button 36 can set two modes: charging and not charging, and the mode adjustment button 37 and the function adjustment button 38 can adjust the two modes: charging and not charging.

[0029] In this embodiment, preferably, each of the four corners of the circuit board 31 is provided with a connecting post 313, and the rear side of the protective box 10 is provided with a connecting hole, and the outer end of the connecting post 313 is inserted into the connecting hole; the connecting hole can realize the installation stability of the connecting post 313, and the cooperation between the connecting post 313 and the connecting hole can realize the installation stability of the circuit board 31. To further ensure the installation stability of the circuit board 31, hot melt adhesive is used to connect the connecting post 313 and the protective box 10.

[0030] In this embodiment, preferably, the load connector 32 is connected to the positive and negative terminals of the charging cable, the power supply connector 39 is connected to the positive and negative terminals of the power supply terminal, and the common terminal 311 is connected to the voice module 40 through a wire; under the action of the load connector 32 and the power supply connector 39, the purpose of connecting the charging cable can be achieved, and the voice module 40 can be continuously powered through the common terminal 311.

[0031] In this embodiment, preferably, the second button assembly includes a voice button 44, a single play button 45, and a motorized play button 46, and the voice button 44, the single play button 45, and the motorized play button 46 are evenly arranged in the lower part of the second circuit board 41 in a horizontal opposite direction; pressing the voice button 44 can achieve the purpose of recording, pressing the single play button 45 can achieve the purpose of single playback, and pressing the motorized play button 46 can achieve the purpose of multiple playbacks.

[0032] In this embodiment, preferably, each of the four corners of the second circuit board 41 is provided with a fixing post 48, and the inner wall of the front of the protective box 10 is provided with a fixing hole, and the outer end of the fixing post 48 is inserted into the fixing hole; the fixing hole can ensure the installation stability of the fixing post 48, and the connection stability between the second circuit board 41 and the protective box 10 can be achieved with the cooperation of the fixing hole and the fixing post 48. To further ensure the installation stability of the second circuit board 41, hot melt adhesive is used to connect the fixing post 48 and the protective box 10.

[0033] Working principle and usage process of this utility model:

[0034] Both sides of the protective box 10 are detachably equipped with sealing plates 20, and the upper end of the protective box 10 has a heat dissipation groove. The sealing plates 20 prevent internal components from falling off. Each sealing plate 20 has a through slot, which allows the charging cable to connect to the current detection module 30 and the voice module 40. The heat dissipation groove helps to cool the current detection module 30 and the voice module 40 during operation. The connection post 313 and the connection hole ensure the installation stability of circuit board 1 31. To further ensure the installation stability of circuit board 1 31, hot melt adhesive is used to connect the connection post 313 to the protective box 10. The fixing hole and the fixing post 48 ensure the connection stability of circuit board 2 41 to the protective box 10. The installation stability of component 41 is ensured by using hot melt adhesive to connect the fixing post 48 to the protective box 10. When the charging cable is unplugged, the display 33 shows a current of 0.1 or less, and the normally closed terminal 312 is in the closed state. At this time, the voice module 40 is triggered to issue an alarm. When charging continues, the display 33 shows a current of 0.1 to 6A, and the normally open terminal 310 is in the open state. At this time, the voice module 40 does not issue an alarm. The actual charging range can be set by adjusting the function button 38 in button assembly one. Pressing the voice button 44 in button assembly two, combined with the microphone 43, records the alarm voice, which is then broadcast through the speaker 47. The single playback button 45 and the electric playback button 46 can be used to play the alarm once or multiple times, reminding the user to unplug the charging cable and eliminate safety hazards.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alarm for a mobile phone charging cable that has been left plugged in, comprising: The protective box (10) is equipped with a current detection module (30) and a voice module (40). The current detection module (30) includes a circuit board (31). A load connector (32) is provided on the front of the circuit board (31) near the left edge. A display (33), a control chip (34), a relay switch (35) and a button assembly are installed on the front of the circuit board (31). A power supply connector (39), a normally open terminal (310), a common terminal (311) and a normally closed terminal (312) are provided on the front of the circuit board (31) near the right edge. The voice module (40) includes a circuit board (41). A through-hole (42) is provided on the front of the circuit board (41) near the left edge. A microphone (43) is provided on the upper part of the front of the circuit board (41). A button assembly is provided on the lower part of the front of the circuit board (41). A speaker (47) is connected to the right side of the circuit board (41) by a wire.

2. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: Both sides of the protective box (10) can be detachably installed with sealing plates (20), and the upper end of the protective box (10) is provided with a heat dissipation groove.

3. The alarm for forgetting to unplug a mobile phone charging cable according to claim 2, characterized in that: Connecting blocks are installed at the upper end, lower end and rear end of the sealing plate (20), and connecting grooves are opened on both sides of the protective box (10), with the connecting blocks movably connected to the connecting grooves.

4. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: The button assembly includes a mode setting button (36), a mode adjustment button (37), and a function adjustment button (38), and the mode setting button (36), mode adjustment button (37), and function adjustment button (38) are evenly arranged in the lower part of the circuit board (31) in a horizontal reverse direction.

5. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: Connecting posts (313) are provided at the four corners of the circuit board (31), and connecting holes are provided inside the rear side of the protective box (10), with the outer end of the connecting post (313) inserted into the connecting hole.

6. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: The load connector (32) is connected to the positive and negative terminals of the charging terminal, the power supply connector (39) is connected to the positive and negative terminals of the load terminal, and the common terminal (311) is connected to the voice module (40) via a wire.

7. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: The second button assembly includes a voice button (44), a single play button (45), and a motorized play button (46), and the voice button (44), single play button (45), and motorized play button (46) are evenly arranged in the lower part of the second circuit board (41) in a horizontal opposite direction.

8. The alarm for forgetting to unplug a mobile phone charging cable according to claim 1, characterized in that: The circuit board 2 (41) is provided with a fixing post (48) at each of its four corners, and the inner wall of the front of the protective box (10) is provided with a fixing hole, and the outer end of the fixing post (48) is inserted into the fixing hole.

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