CN213304961U - Short-circuit protection device for switching power supply - Google Patents
Short-circuit protection device for switching power supply Download PDFInfo
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- CN213304961U CN213304961U CN202021543710.6U CN202021543710U CN213304961U CN 213304961 U CN213304961 U CN 213304961U CN 202021543710 U CN202021543710 U CN 202021543710U CN 213304961 U CN213304961 U CN 213304961U
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- mounting box
- switch
- power supply
- switching power
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Abstract
The utility model belongs to the technical field of switchgear, specifically disclose a switching power supply short-circuit protection device, including the mounting box, the mounting box bottom is provided with participates in, mounting box one side is provided with the trough, be provided with the circuit board in the mounting box, be provided with switch circuit on the circuit board, switch circuit is provided with current sensor, switch circuit with participate in between be connected through power-off device, still be provided with alarm device on the mounting box, power-off device, alarm device and current sensor are controlled by the singlechip. The utility model discloses the outage device that sets up can effectively prevent to influence the use of other electrical apparatus in the twinkling of an eye cut off electrical apparatus power of electric current increase, and effectively prevents that current switching power supply protection device from making a round trip closed influence switching power supply protection device life, and sets up alarm device and remind, and the practicality is strong.
Description
Technical Field
The utility model relates to a switching power supply short-circuit protection device belongs to switchgear technical field.
Background
Along with the kind of electrical apparatus increases gradually, the frequency of various power consumption accidents, the life safety for people has brought very big influence, when domestic appliance breaks down, current increase often all in the twinkling of an eye, lead to the short circuit of family's circuit, cause the conflagration very easily, cause the damage of whole circuit, bring very big trouble for the user, current switching power supply can not accomplish the very first time that breaks down at domestic appliance, under the prerequisite that does not influence other electrical apparatus normal work, cut off the power supply to the electrical apparatus that breaks down, protection circuit safety, the switching power supply short-circuit protection device of present design solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switching power supply short-circuit protection device sets up the power that the breakpoint device comes in time to break off short-circuit electrical apparatus, sets up alarm device simultaneously and indicates, solves the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a switching power supply short-circuit protection device, includes the mounting box, the mounting box bottom is provided with participates in, mounting box one side is provided with the trough, be provided with the circuit board in the mounting box, be provided with switch circuit on the circuit board, switch circuit is provided with current sensor, switch circuit with participate in between be connected through power failure device, still be provided with alarm device on the mounting box, power failure device, alarm device and current sensor are by single chip microcomputer control.
Preferably, power-off device includes elasticity pivot, switch floodgate, connection contact and electro-magnet, the switch floodgate is insulating material, the switch floodgate passes through the elasticity pivot and installs on the circuit board, the switch floodgate front end is provided with the iron sheet, it is provided with the electro-magnet to correspond on the circuit board, switch floodgate and circuit board correspond and are provided with the connection contact.
Preferably, the alarm device comprises a buzzer and a dustproof frame, the dustproof frame is arranged at the top end of the mounting box, and the buzzer is arranged in the dustproof frame.
Preferably, the switch gate is provided with a pressing rod through a mounting groove on the mounting box above the corresponding switch gate, and the pressing rod is made of an insulating material.
Preferably, the switching circuit further comprises an inrush current prevention circuit.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model belongs to the technical field of switchgear, specifically disclose a switching power supply short circuit protection device, increase in the twinkling of an eye of electric current in the current sensor detection circuitry through setting up, by being connected of single chip microcomputer control outage device disconnection short circuit electrical apparatus and family's circuit, prevent that short circuit electrical apparatus from influencing the normal use of other electrical apparatus in the family's circuit, the work of simultaneous control alarm device reminds, the utility model discloses simple structure, convenient operation, the practicality is strong.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of a switching circuit of the present invention;
in the figure: 1. mounting a box; 2. a pin; 3. a wiring groove; 4. a circuit board; 5. a current sensor; 6. a power-off device; 7. an alarm device; 8. a single chip microcomputer; 9. an elastic rotating shaft; 10. switching on and off; 11. a connection contact; 12. an electromagnet; 13. iron sheets; 14. a buzzer; 15. a dust-proof frame; 16. a pressing lever; 17. and (4) mounting the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a switching power supply short-circuit protection device, includes mounting box 1, 1 bottom of mounting box is provided with participates in 2, 1 one side of mounting box is provided with trough 3, be provided with circuit board 4 in the mounting box 1, be provided with switch circuit on the circuit board 4, switch circuit is provided with current sensor 5, switch circuit with participate in and be connected through power-off device 6 between 2, still be provided with alarm device 7 on the mounting box 1, power-off device 6, alarm device 7 and current sensor 5 are by single chip microcomputer 8 control.
Further, power-off device 6 includes elasticity pivot 9, switch floodgate 10, connection contact 11 and electro-magnet 12, switch floodgate 10 is insulating material, switch floodgate 10 is installed on circuit board 4 through elasticity pivot 9, switch floodgate 10 front end is provided with iron sheet 13, it is provided with electro-magnet 12 to correspond on circuit board 4, switch floodgate 10 and circuit board 4 correspond and are provided with connection contact 11.
Further, the alarm device 7 comprises a buzzer 14 and a dustproof frame 15, the dustproof frame 15 is arranged at the top end of the mounting box 1, and the buzzer 14 is arranged in the dustproof frame 15.
Furthermore, a pressing rod 16 is arranged on the mounting box 1 above the switch gate 10 through a mounting groove 17, and the pressing rod 16 is made of an insulating material.
Further, the switching circuit further comprises an anti-surge current circuit.
The working principle is as follows: the utility model relates to a short-circuit protection device for switch power supply, when in use, the plug pin 2 in the mounting box 1 is inserted into a socket, the switch brake 10 is pressed by the pressing rod 16 arranged on the mounting box 1, so that the switch brake 10 is attracted by the electromagnet 12 in the power-off device 6, and the connecting contacts 11 on the switch brake 10 and on the circuit board 4 are contacted with each other to switch on the switch circuit, meanwhile, the current sensor 5 works in real time and feeds back the current value signal in the circuit to the singlechip 8, the switch circuit is provided with the surge current prevention circuit which can effectively prevent the surge phenomenon of starting the instantaneous current, when the electrical appliance is in short circuit, the current in the switch circuit is increased instantaneously, the set current sensor 5 senses the current suddenly increased signal and feeds back the signal to the singlechip 8, the singlechip 8 receives the signal and rapidly controls the electromagnet 12 to stop working, so that the switch brake 10 attracted on the electromagnet 12 is bounced under the action, make connecting contact 11 on the switch 10 and the connecting contact 11 of circuit board 4 disconnection to disconnect switch circuit, cut off the connection of electrical apparatus and family's circuit, prevent that its short circuit influence from leading to family's circuit master switch to close or influencing the normal work of other electrical apparatus in the family's circuit, singlechip 8 control buzzer 14 work simultaneously carries out the warning effect.
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 (5)
1. A short-circuit protection device for a switching power supply is characterized in that: including mounting box (1), mounting box (1) bottom is provided with participates in (2), mounting box (1) one side is provided with trough (3), be provided with circuit board (4) in mounting box (1), be provided with switch circuit on circuit board (4), switch circuit is provided with current sensor (5), switch circuit with participate in and be connected through power-off device (6) between (2), still be provided with alarm device (7) on mounting box (1), power-off device (6), alarm device (7) and current sensor (5) are controlled by singlechip (8).
2. A switching power supply short-circuit protection device according to claim 1, characterized in that: outage device (6) are including elasticity pivot (9), switch floodgate (10), connection contact (11) and electro-magnet (12), switch floodgate (10) are insulating material, switch floodgate (10) are installed on circuit board (4) through elasticity pivot (9), switch floodgate (10) front end is provided with iron sheet (13), it is provided with electro-magnet (12) to correspond on circuit board (4), switch floodgate (10) and circuit board (4) correspond and are provided with connection contact (11).
3. A switching power supply short-circuit protection device according to claim 1, characterized in that: alarm device (7) include bee calling organ (14) and dustproof frame (15), dustproof frame (15) set up on mounting box (1) top, be provided with bee calling organ (14) in dustproof frame (15).
4. A switching power supply short-circuit protection device according to claim 2, characterized in that: the switch brake (10) is provided with a pressing rod (16) through a mounting groove (17) on the mounting box (1) above the corresponding switch brake, and the pressing rod (16) is made of an insulating material.
5. A switching power supply short-circuit protection device according to claim 1, characterized in that: the switching circuit further comprises an anti-surge current circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021543710.6U CN213304961U (en) | 2020-07-29 | 2020-07-29 | Short-circuit protection device for switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021543710.6U CN213304961U (en) | 2020-07-29 | 2020-07-29 | Short-circuit protection device for switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213304961U true CN213304961U (en) | 2021-05-28 |
Family
ID=76022203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021543710.6U Active CN213304961U (en) | 2020-07-29 | 2020-07-29 | Short-circuit protection device for switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213304961U (en) |
-
2020
- 2020-07-29 CN CN202021543710.6U patent/CN213304961U/en active Active
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