CN109586372B

CN109586372B - Automatic circuit-breaking protection device for mobile phone charging head

Info

Publication number: CN109586372B
Application number: CN201811531374.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhongshan Changdi Electronics Co ltd
Current assignee: Zhongshan Changdi Electronics Co ltd
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2022-06-07
Anticipated expiration: 2038-12-14
Also published as: CN109586372A

Abstract

The invention relates to the technical field of communication and network equipment, and discloses an automatic circuit breaking protection device of a mobile phone charging head, which comprises a charging head shell, wherein a conductive connector is fixedly arranged in the middle of one side of the front surface of the charging head shell, one end of the conductive connector penetrates through and extends to an inner cavity of the charging head shell, and the front surface of the inner cavity of the charging head shell is in threaded connection with a circuit board. Compared with the existing circuit breaking device of the charger, the automatic circuit breaking protection device of the mobile phone charging head has the advantages that an external power supply does not need to be added, the charger does not need to be disassembled and assembled irregularly and the external power supply does not need to be replaced, and meanwhile, an induction device does not need to be added at the connection position of a data line and the mobile phone, so that the use is convenient and reliable, the manufacturing process is simple, and the production cost is lower.

Description

Automatic circuit-breaking protection device for mobile phone charging head

Technical Field

The invention relates to the technical field of communication and network equipment, in particular to an automatic circuit breaking protection device for a mobile phone charging head.

Background

The mobile phone as a wireless communication device terminal changes the life and working mode of people subtly, and becomes an indispensable electronic product in modern life, but the mobile phone as an electronic product needs to be charged by a charger every day to ensure the normal operation of the mobile phone.

However, in actual life, many people insert the mobile phone charger into the socket for convenient use, although the charger does not charge the mobile phone, the circuit board inside the charger is still connected with the power supply, and certain electric energy is consumed, and the charger is composed of electronic elements, so that micro-current can pass through after the power supply is switched on for a long time, the electronic elements are overheated for a long time, the aging of the electronic elements and materials is accelerated, the short circuit or high-voltage breakdown of the electronic elements is easily caused, the service cycle of the charger is seriously shortened, and certain potential safety hazards exist.

In the prior art, in order to solve the problem that the mobile phone charger is always connected with a power supply, firstly, an external power supply, a light emitting diode, a photoresistor and the like are added in the charger, and the photoresistor is used for blocking current, but for the setting of the external power supply, the charger needs to be disassembled and assembled and the external power supply needs to be replaced irregularly, so that the service life of the charger is seriously influenced; secondly, an induction device is added at the joint of the data line and the mobile phone to control the automatic open circuit of the mobile phone charger, but the volume of the joint of the data line and the mobile phone is small, and then the inductor is added, so that the manufacturing process difficulty and the production cost of the data line are increased.

Disclosure of Invention

Technical problem to be solved

The invention provides an automatic open-circuit protection device of a mobile phone charging head, which has the advantages of automatic power on and off according to the connection condition of a mobile phone, no short circuit or high-voltage breakdown of an electronic element caused by long-term insertion on a plug board, long service life and high safety performance, and solves the problem that in the prior art, in order to solve the problem that a mobile phone charger is always connected with a power supply, firstly, an external power supply, a light-emitting diode, a photoresistor and the like are added in the charger, and the current is blocked by utilizing the photoresistor, but for the setting of an external power supply, the charger needs to be assembled and disassembled at irregular time and the external power supply is replaced, so that the service life of the charger is seriously influenced; secondly, an induction device is added at the joint of the data line and the mobile phone to control the automatic open circuit of the mobile phone charger, but the volume of the joint of the data line and the mobile phone is small, and then an inductor is added, so that the problems of difficulty in manufacturing the data line and production cost are solved.

(II) technical scheme

The invention provides the following technical scheme: an automatic circuit breaking protection device of a mobile phone charging head comprises a charging head shell, wherein a conductive joint is fixedly arranged in the middle of the front side of the charging head shell, one end of the conductive joint penetrates through and extends to the inner cavity of the charging head shell, a circuit board is connected to the front side of the inner cavity of the charging head shell in a threaded manner, a fixed pin is arranged at the front top of the inner cavity of the charging head shell, a connecting rod I is movably sleeved on the outer surface of the fixed pin and is located in the front middle of the connecting rod I, a connecting rod II is arranged at one end of the connecting rod I, one end of the connecting rod I is in pin joint with the top end of the connecting rod II, an armature I and an armature II are respectively arranged at the top of the back of the connecting rod II and are respectively located on the upper side and the lower side of one end of the conductive joint, a primary winding circuit and a secondary winding circuit are respectively arranged in the front middle of the circuit board, the other end of connecting rod I is equipped with connecting rod III, and the other end of connecting rod I and the top pin joint of connecting rod III, the top fixed mounting of connecting rod III has reset spring, reset spring's top and one side fixed connection at first casing inner chamber top that charges, the bottom fixedly connected with iron plate of connecting rod III, the bottom of iron plate is equipped with solenoid, and solenoid's top and the bottom contact of iron plate, one side fixed mounting of first casing inner chamber bottom that charges has the fixed block, and the top of fixed block and solenoid's bottom threaded connection, the middle part fixed mounting of first casing inner chamber opposite side that charges has the data line interface.

Preferably, the upper side and the lower side of one end, located in the inner cavity of the charging head shell, of the conductive connector are provided with grooves, and the upper group of grooves and the lower group of grooves are respectively matched with the sizes of the armature I and the armature II.

Preferably, the top and the bottom of the back of the conductive connector are respectively provided with a group of armatures I and II, the upper armatures I, the data line interface, the electromagnetic coil, the lower armatures I and the conductive connector are connected in series, the upper and the lower groups of armatures II are connected in series with two ends of the primary winding circuit, and the secondary winding circuit, the data line interface and the electromagnetic coil are connected in series.

Preferably, the minimum gap between the bottom end of the iron block and the electromagnetic coil is larger than the difference between the gap between the armature I and the armature II and the thickness of the conductive joints at the two groups of grooves.

Preferably, the elastic force generated by the return spring is greater than the sum of the gravity of the connecting rod III and the iron block and is less than the sum of the minimum magnetic force of the electromagnetic coil and the gravity of the connecting rod III.

Preferably, the bottom of connecting rod II is equipped with the position sleeve, and the bottom of II surfaces of connecting rod cup joints with the inner wall activity of position sleeve, and the opposite side fixed connection of position sleeve's bottom and the head casing inner chamber bottom that charges simultaneously.

(III) advantageous effects

The invention has the following beneficial effects:

the automatic circuit breaking protection device of the mobile phone charging head is characterized in that through the arrangement of the armature I, the armature II, the iron block and the electromagnetic coil, when a mobile phone is connected, the circuit of the electromagnetic coil is connected, a magnetic field is generated to drive the iron block to move downwards to connect the power supply of the conductive joint and the armature II, so that the charger starts to work for charging the mobile phone, when the mobile phone is disconnected, a closed loop cannot be formed in the secondary winding circuit, induction current cannot be generated, then the conductive joint is disconnected with the armature II under the action of the reset spring, the connecting rod I and the connecting rod II, so that the charger is completely disconnected from the power supply, and the conductive joint is connected with the armature I at the same time. Convenient and reliable use, simple manufacturing process and lower production cost.

Drawings

FIG. 1 is a schematic diagram of a charger configured according to the present invention when energized;

FIG. 2 is a schematic diagram of the charger of the present invention when it is powered off.

In the figure: 1. a charging head housing; 2. a conductive joint; 3. a circuit board; 4. a fixing pin; 5. a connecting rod I; 6. a connecting rod II; 7. an armature I; 8. an armature II; 9. a primary winding circuit; 10. a secondary winding circuit; 11. a connecting rod III; 12. a return spring; 13. an iron block; 14. an electromagnetic coil; 15. a fixed block; 16. and a data line interface.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, an automatic circuit breaking protection device for a mobile phone charging plug comprises a charging plug housing 1, a conductive connector 2 is fixedly installed in the middle of one side of the front surface of the charging plug housing 1, one end of the conductive connector 2 penetrates through and extends to the inner cavity of the charging plug housing 1, the front surface of the inner cavity of the charging plug housing 1 is in threaded connection with a circuit board 3, a fixed pin 4 is arranged on the top of the front surface of the inner cavity of the charging plug housing 1, a connecting rod i 5 is movably sleeved on the outer surface of the fixed pin 4, the fixed pin 4 is located in the middle of the front surface of the connecting rod i 5, one end of the connecting rod i 5 is provided with a connecting rod ii 6, one end of the connecting rod i 5 is in pin connection with the top end of the connecting rod ii 6, an armature i 7 and an armature ii 8 are respectively arranged on the top of the back surface of the connecting rod ii 6, the armature i 7 and the armature ii 8 are respectively located on the upper and lower sides of one end of the conductive connector 2, a primary winding circuit 9 and a secondary winding circuit 10 are respectively arranged in the middle of the front surface of the circuit board 3, the other end of connecting rod I5 is equipped with connecting rod III 11, and the other end of connecting rod I5 is connected with the top pin joint of connecting rod III 11, the top fixed mounting of connecting rod III 11 has reset spring 12, reset spring 12's top and the one side fixed connection at 1 inner chamber top of the first casing that charges, the bottom fixed connection of connecting rod III 11 has iron plate 13, the bottom of iron plate 13 is equipped with solenoid 14, and solenoid 14's top and iron plate 13's bottom contact, one side fixed mounting of 1 inner chamber bottom of the first casing that charges has fixed block 15, and the top of fixed block 15 and solenoid 14's bottom threaded connection, the middle part fixed mounting of 1 inner chamber opposite side of the first casing that charges has data line interface 16.

Among this technical scheme, both sides all are equipped with the recess about the conducting terminal 2 is located the one end of 1 inner chamber of charging head casing, and upper and lower two sets of recesses respectively with armature I7 and armature II 8's size phase-match, to the setting of conducting terminal 2 upper groove for effectual contact can be stabilized between conducting terminal 2 and armature I7 or armature II 8, even slight vibrations take place for the charger, do not cause contact failure's problem between conducting terminal 2 and armature I7 or armature II 8 yet.

In the technical scheme, the top and the bottom of the back of the conductive connector 2 are respectively provided with a group of armatures I7 and II 8, the upper armatures I7, the data line interface 16, the electromagnetic coil 14, the lower armatures I7 and the conductive connector 2 are connected in series, the upper and lower armatures II 8 and two ends of the primary winding circuit 9 are connected in series, the secondary winding circuit 10, the data line interface 16 and the electromagnetic coil 14 are connected in series, two groups of different electric circuits can be formed when the mobile phone is connected for the arrangement of the two groups of circuits, so that the contact between the armatures I7 or II 8 and the conductive connector 2 is controlled in different states, the on-off of an internal power supply of the charger is further controlled, and the situation that the mobile phone is not connected is ensured, and no current can be generated inside the charger.

In the technical scheme, the minimum gap between the bottom end of the iron block 13 and the electromagnetic coil 14 is larger than the difference between the gap between the armature I7 and the armature II 8 and the thickness of the conductive connector 2 at two groups of grooves, and the gap between the iron block 13 and the electromagnetic coil 14 is set to ensure that when the iron block 13 moves up and down under the electromagnetic force action of the electromagnetic coil 14, the armature I7 or the armature II 8 can be effectively and stably contacted with the grooves on the conductive connector 2, so that the condition of poor contact between the conductive connector 2 and the armature I7 or the armature II 8 is further ensured.

In the technical scheme, the elastic force generated by the return spring 12 is larger than the sum of the gravity of the connecting rod III 11 and the gravity of the iron block 13 and smaller than the sum of the minimum magnetic force of the electromagnetic coil 14 and the gravity of the connecting rod III 11.

Among this technical scheme, the bottom of connecting rod II 6 is equipped with the position sleeve, and the bottom of II 6 surfaces of connecting rod cup joints with the inner wall activity of position sleeve, and position sleeve's bottom and the opposite side fixed connection of 1 inner chamber bottom of the first casing that charges simultaneously, to position sleeve's setting, even be in arbitrary angle during operation at the charger, can not lead to II 6 of connecting rod to take place to rock the slope yet, and then take place the condition of contact failure, further improved this charger stability and reliability at the during operation.

The use method and the working principle of the embodiment are as follows:

when the mobile phone is charged, because the conductive connector 2 is always inserted on the plug board, the connecting rod II 6 is under the action of gravity, and the pulling force of the reset spring 12 is under the lever action of the fixing pin 4 and the connecting rod I5, the connecting rod II 6 and the armature II 8 on the connecting rod II 6 are driven to move downwards, and meanwhile, the armature I7 is always in contact with the groove above the conductive connector 2, when the mobile phone is connected by using a data line, the conductive connector 2, the armature I7 above, the data line interface 16, the electromagnetic coil 14 and the armature I7 below are connected to form an electric loop, so that the electromagnetic coil 14 is electrified to generate magnetic force, the iron block 13 is attracted to move downwards, the connecting rod III 11 is driven to move downwards to stretch the reset spring 12, and under the lever action of the fixing pin 4 and the connecting rod I5, the connecting rod II 6 and the armature II 8 fixedly installed on the connecting rod II 6 are driven to move upwards to connect a power supply, when the current is transmitted to the primary winding circuit 9, the rated voltage of the mobile phone battery is reduced to be the rated voltage of the mobile phone battery through the transformation effect of the primary winding circuit 9 and the secondary winding circuit 10, and the rated voltage is transmitted out, meanwhile, the armature I7 is driven to move upwards by the upward movement of the connecting rod II 6, so that the armature I7 is disconnected from the conductive connector 2, but under the action of the secondary winding circuit 10, the electromagnetic coil 14 and the electric circuit of the data line interface 16, the induced current generated by the secondary winding circuit 10 can continuously pass through the electromagnetic coil 14, so that the electromagnetic coil 14 is kept electrified all the time, a certain electromagnetic force is generated, the stable contact between the conductive connector 2 and the armature II 8 is ensured, and the stable current is generated to charge the mobile phone;

When the mobile phone is not charged, when the data line is disconnected with the mobile phone, a closed loop cannot be formed among the secondary winding circuit 10, the electromagnetic coil 14 and the data line interface 16, so that only induced voltage exists on the secondary winding circuit 10, but induced current does not exist, and the electromagnetic coil 14 cannot generate an electromagnetic field to attract the iron block 13, then the connecting rod III 11 and the iron block 13 are driven to move upwards and be separated from the electromagnetic coil 14 under the action of the tension of the reset spring 12, and meanwhile, the connecting rod II 6 and the armature I7 and the armature II 8 on the connecting rod II 6 are driven to move downwards under the lever action of the fixing pin 4 and the connecting rod I5 and the self weight of the connecting rod II 6, so that the connection between the conductive connector 2 and the armature II 8 is automatically disconnected, the connection between the interior of the mobile phone charger and a power supply is disconnected, the mobile phone charger is effectively protected, and the armature I7 moving downwards is contacted with a groove on the conductive connector 2, and when the mobile phone is switched on and needs to be charged, repeating the steps.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cell-phone charges automatic circuit breaker protection device of head, includes first casing (1) that charges, its characterized in that: the middle part of the front side of the charging head shell (1) is fixedly provided with a conductive connector (2), one end of the conductive connector (2) penetrates through and extends to the inner cavity of the charging head shell (1), the front side of the inner cavity of the charging head shell (1) is in threaded connection with a circuit board (3), the front top of the inner cavity of the charging head shell (1) is provided with a fixed pin (4), the outer surface of the fixed pin (4) is movably sleeved with a connecting rod I (5), the fixed pin (4) is positioned in the front middle of the connecting rod I (5), one end of the connecting rod I (5) is provided with a connecting rod II (6), one end of the connecting rod I (5) is in pin joint with the top end of the connecting rod II (6), the top of the back of the connecting rod II (6) is respectively provided with an armature I (7) and an armature II (8), and the armature I (7) and the armature II (8) are respectively positioned at the upper side and the lower side of one end of the conductive connector (2), the positive middle part of circuit board (3) is equipped with primary winding circuit (9) and secondary winding circuit (10) respectively, the other end of connecting rod I (5) is equipped with connecting rod III (11), and the other end of connecting rod I (5) is in pin joint with the top end of connecting rod III (11), the top end fixed mounting of connecting rod III (11) has reset spring (12), the top end of reset spring (12) and one side fixed connection at the top of charging head casing (1) inner chamber, the bottom fixed connection of connecting rod III (11) has iron plate (13), the bottom of iron plate (13) is equipped with solenoid (14), and the top of solenoid (14) and the bottom contact of iron plate (13), one side fixed mounting of charging head casing (1) inner chamber bottom has fixed block (15), and the top of fixed block (15) and the bottom threaded connection of solenoid (14), a data line interface (16) is fixedly arranged in the middle of the other side of the inner cavity of the charging head shell (1);

Grooves are formed in the upper side and the lower side of one end, located in the inner cavity of the charging head shell (1), of the conductive connector (2), and the upper group of grooves and the lower group of grooves are matched with the sizes of the armature I (7) and the armature II (8) respectively; the top and the bottom of the back of the conductive connector (2) are respectively provided with a group of armatures I (7) and II (8), the upper armatures I (7), the data line interfaces (16), the electromagnetic coils (14), the lower armatures I (7) and the conductive connector (2) are connected in series, the upper and lower groups of armatures II (8) are connected in series with two ends of the primary winding circuit (9), and the secondary winding circuit (10), the data line interfaces (16) and the electromagnetic coils (14) are connected in series; the minimum gap between the bottom end of the iron block (13) and the electromagnetic coil (14) is larger than the difference between the gap between the armature I (7) and the armature II (8) and the thickness of the conductive joints (2) at the two groups of grooves;

the elastic force generated by the return spring (12) is greater than the sum of the gravity of the connecting rod III (11) and the gravity of the iron block (13) and is less than the sum of the minimum magnetic force of the electromagnetic coil (14) and the gravity of the connecting rod III (11);

when the mobile phone is charged, the conductive connector (2) is always inserted on the plug board, the connecting rod II (6) is driven to move downwards under the action of gravity, and the pulling force of the reset spring (12) is under the lever action of the fixed pin (4) and the connecting rod I (5), and the armature II (8) on the connecting rod II (6) and the connecting rod II (7) are always contacted with the groove above the conductive connector (2), when the mobile phone is connected by using a data line, the conductive connector (2), the armature I (7) above the conductive connector (2), the data line interface (16), the electromagnetic coil (14) and the armature I (7) below the conductive connector (2) are connected to form an electric loop, so that the electromagnetic coil (1 and the electromagnetic coil (4) are electrified to generate magnetic force to attract the iron block (13) to move downwards, and simultaneously the connecting rod III (11) is driven to move downwards to stretch the reset spring (12), and under the lever action of the fixed pin (4) and the connecting rod I (5), the connecting rod II (6) and the armature II (8) fixedly arranged on the connecting rod II (6) are driven to move upwards to be connected with a power supply, when current is transmitted to the primary winding circuit (9), the rated voltage of the mobile phone battery is reduced to be transmitted out through the transformation action of the primary winding circuit (9) and the secondary winding circuit (10), and meanwhile, the armature I (7) is driven to move upwards by the upward movement of the connecting rod II (6), so that the armature I (7) is disconnected from the conductive connector (2), but under the action of an electric loop of the secondary winding circuit (10), the electromagnetic coil (14) and the data line interface (16), induced current generated by the secondary winding circuit (10) can continuously pass through the electromagnetic coil (14), so that the electromagnetic coil (14) is kept electrified all the time, certain electromagnetic force is generated, and the stable contact between the conductive connector (2) and the armature II (8) is ensured, generating stable current to charge the mobile phone.

2. The automatic circuit breaking protection device of a charging head of a mobile phone according to claim 1, characterized in that: the bottom of connecting rod II (6) is equipped with the position sleeve, and the bottom of connecting rod II (6) surface cup joints with the inner wall activity of position sleeve, and the opposite side fixed connection of position sleeve's bottom and first casing (1) inner chamber bottom charges simultaneously.