CN211428110U - Overload power-off protection structure for switching power supply - Google Patents
Overload power-off protection structure for switching power supply Download PDFInfo
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- CN211428110U CN211428110U CN201921756789.8U CN201921756789U CN211428110U CN 211428110 U CN211428110 U CN 211428110U CN 201921756789 U CN201921756789 U CN 201921756789U CN 211428110 U CN211428110 U CN 211428110U
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- switch body
- switch
- power supply
- overload
- arc
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Abstract
The utility model provides an overload power-off protection structure for switching power supply relates to circuit technical field, include: the switch body, the front swing joint of switch body has the safety cover, and the inside of safety cover is provided with the switch. The utility model discloses a be connected the connector lug of switch body with external power supply, make switch body circular telegram, make the electric current convey the positive contact through the arc chamber, make negative contact link to each other with the bottom of connector lug, when the transmission of electric current overload, the spring in the outage chamber can be opened the positive contact bullet automatically, make the switch body play the effect of outage, can produce certain electric arc at the outage in-process, make electric arc the burning in the clearance department of the indoor insulating barrier piece of arc, with this effect that reaches the arc extinguishing.
Description
Technical Field
The utility model relates to the technical field of circuits, more specifically say, relate to an overload power-off protection structure for switching power supply.
Background
The power switch is used for switching on and off at a high speed by controlling a switch tube through a circuit, direct current is converted into high-frequency alternating current to be supplied to a transformer for transformation, and therefore one or more groups of required voltage are generated.
Current air switch can produce certain electric arc and lead to the circuit to appear damaging when carrying out power-off protection to the circuit, and present air switch generally adopts the vacuum to come to the effect that reaches the arc extinguishing, utilizes the vacuum to carry out the arc extinguishing and makes air switch's arc extinguishing effect relatively poor, and the arcing time is longer.
SUMMERY OF THE UTILITY MODEL
Problem (A)
To sum up, this practicality provides an overload power-off protection structure for switching power supply to propose current air switch when carrying out power-off protection to the circuit among the solution above-mentioned background art, air switch's arc extinguishing effect is relatively poor, the longer problem of arcing time.
(II) technical scheme
The utility model provides an overload power-off protection structure for switching power supply, include: the switch body, the front swing joint of switch body has the safety cover, the inside of safety cover is provided with the switch, the upper and lower both ends of switch body all are provided with the connector lug, the back of switch body is provided with two buckles, the inside of switch body is provided with anodal contact, the below fixed mounting of anodal contact has the arc chamber, the inside top of arc chamber is provided with the contact, the inside of arc chamber is provided with the insulating bar piece, the inside fixed mounting of switch body has the outage room, the inside of switch body is provided with the negative pole contact.
Preferably, the protective cover is a cube, and the protective cover is made of a plastic transparent material.
Preferably, the buckles are triangular, and the sharp corners of the two buckles are concave inwards.
Preferably, the number of the insulated gate sheets is seven, and the interval of each insulated gate sheet is 0.5 cm.
Preferably, a spring is arranged inside the power-off chamber and connected with the switch.
Preferably, the negative contact is connected with the connector lug at the bottom end of the switch body, and the negative contact can also be disconnected with the connector lug at the bottom end of the switch body.
Preferably, the power-off chamber and the arc chamber are both electrically connected with an external power supply through a connector lug.
(III) advantageous effects
The utility model discloses a be connected the connector lug of switch body with external power supply, make switch body circular telegram, make the electric current convey the positive contact through the arc chamber, make negative contact link to each other with the bottom of connector lug, when the transmission of electric current overload, the spring in the outage chamber can be opened the positive contact bullet automatically, make the switch body play the effect of outage, can produce certain electric arc at the outage in-process, make electric arc the burning in the clearance department of the indoor insulating barrier piece of arc, with this effect that reaches the arc extinguishing.
Secondly, because the safety cover is the square, and the safety cover belongs to plastic transparent material, make the switch can not expose in the air, play the guard action to the switch, and the buckle is triangle-shaped, and the closed angle of two buckles is to the indent, make when the installation switch body, only need to detain the buckle on an object can be fixed, and the insulated gate piece is provided with seven, and the interval of every insulated gate piece is 0.5cm, make electric arc in the better burning of the clearance department of insulated gate piece, play the effect of arc extinguishing.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a right side view of the switch body of the present invention;
fig. 3 is a schematic view of the internal structure of the switch body of the present invention;
fig. 4 is a schematic view of the internal structure of the arc chamber of the present invention.
In fig. 1 to 4, the correspondence between the part names or lines and the reference numbers is:
the switch comprises a switch body 1, a protective cover 101, a switch 102, a connector lug 103, a buckle 104, a positive contact 105, an arc chamber 106, a contact 1061, an insulating grid 1062, a power-off chamber 107 and a negative contact 108.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the present invention, but are not intended to limit the scope of the present invention.
Please refer to fig. 1 to 4; the utility model provides a, an overload power-off protection structure for switching power supply, include: switch body 1, switch body 1's front swing joint has protection cover 101, protection cover 101's inside is provided with switch 102, switch body 1's upper and lower both ends all are provided with connector lug 103, switch body 1's the back is provided with two buckles 104, switch body 1's inside is provided with anodal contact 105, anodal contact 105's below fixed mounting has arc chamber 106, arc chamber 106's inside top is provided with contact 1061, arc chamber 106's inside is provided with insulating bars piece 1062, switch body 1's inside fixed mounting has outage room 107, switch body 1's inside is provided with negative pole contact 108.
The protection cover 101 is a cube, and the protection cover 101 is made of a plastic transparent material, so that the switch 102 is not exposed in the air, and the switch 102 is protected.
The buckles 104 are triangular, and the sharp corners of the two buckles 104 are concave, so that when the switch body 1 is installed, the buckles 104 can be fixed only by buckling on an object.
Seven insulating grid pieces 1062 are arranged, and the interval of each insulating grid piece 1062 is 0.5cm, so that the arc is better combusted at the gap of each insulating grid piece 1062 to play a role in arc extinction.
Wherein, the inside of outage room 107 is provided with the spring, and the spring is connected with switch 102, and when the transmission of electric current overload, the spring in outage room 107 can be automatic with anodal contact 105 flick for switch body 1 plays the effect of outage.
The negative contact 108 is connected to the terminal 103 at the bottom of the switch body 1, and the negative contact 108 is also disconnected from the terminal 103 at the bottom of the switch body 1, so that the negative contact 108 is disconnected from the terminal 103 at the bottom of the switch body 1 after the switch 102 is flicked.
Wherein, the power-off chamber 107 and the arc chamber 106 are electrically connected with an external power supply through the connector 103.
The working principle is as follows: firstly, the switch body 1 is installed at a designated position through the buckle 104, then, the switch body 1 is connected with an external power supply through the connector 103, so that the switch body 1 is electrified, then, current passes through the connector 103, the arc chamber 106, the power-off chamber 107, the positive contact 105 and the negative contact 108, so that the switch body 1 normally operates, next, when the current is transmitted in an overload state, the positive contact 105 is flicked by a spring in the power-off chamber 107, so that the switch 102 moves downwards, and finally, the generated arc is burnt through a gap of the insulating grid 1062 in the arc chamber 106 to extinguish the arc.
The embodiments of the present application have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. An overload power-off protection structure for a switching power supply, comprising: switch body (1), its characterized in that, the front swing joint of switch body (1) has safety cover (101), the inside of safety cover (101) is provided with switch (102), the upper and lower both ends of switch body (1) all are provided with connector lug (103), the back of switch body (1) is provided with two buckle (104), the inside of switch body (1) is provided with anodal contact (105), the below fixed mounting of anodal contact (105) has arc chamber (106), the inside top of arc chamber (106) is provided with contact (1061), the inside of arc chamber (106) is provided with insulating grid piece (1062), the inside fixed mounting of switch body (1) has outage chamber (107), the inside of switch body (1) is provided with negative pole contact (108).
2. The overload power-off protection structure for the switch power supply as claimed in claim 1, wherein the protection cover (101) is a cube, and the protection cover (101) is made of plastic transparent material.
3. The overload power-off protection structure for the switch power supply as claimed in claim 1, wherein the buckles (104) are triangular, and the sharp corners of the two buckles (104) are concave inwards.
4. The overload power-off protection structure for the switching power supply according to claim 1, wherein the number of the insulated gate pieces (1062) is seven, and the interval of each insulated gate piece (1062) is 0.5 cm.
5. An overload power-off protection arrangement for a switching power supply according to claim 1, characterized in that the power-off chamber (107) is provided with a spring inside and that the spring is connected to the switch (102).
6. An overload power-off protection arrangement for a switching power supply according to claim 1, characterised in that the negative contact (108) is connected to the terminal (103) at the bottom end of the switch body (1) and the negative contact (108) is also disconnectable from the terminal (103) at the bottom end of the switch body (1).
7. An overload power-off protection architecture for a switching power supply according to claim 1, characterised in that the power-off chamber (107) and the arc chamber (106) are both electrically connected to an external power supply via a terminal (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921756789.8U CN211428110U (en) | 2019-10-19 | 2019-10-19 | Overload power-off protection structure for switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921756789.8U CN211428110U (en) | 2019-10-19 | 2019-10-19 | Overload power-off protection structure for switching power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211428110U true CN211428110U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921756789.8U Active CN211428110U (en) | 2019-10-19 | 2019-10-19 | Overload power-off protection structure for switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211428110U (en) |
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2019
- 2019-10-19 CN CN201921756789.8U patent/CN211428110U/en active Active
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