CN219643590U - Power supply surge protector - Google Patents
Power supply surge protector Download PDFInfo
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- CN219643590U CN219643590U CN202222540270.4U CN202222540270U CN219643590U CN 219643590 U CN219643590 U CN 219643590U CN 202222540270 U CN202222540270 U CN 202222540270U CN 219643590 U CN219643590 U CN 219643590U
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- fixedly connected
- shell
- conductive
- protector
- surge protector
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- 230000001012 protector Effects 0.000 title claims abstract description 46
- 238000003466 welding Methods 0.000 claims description 10
- 238000005476 soldering Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model provides a power supply surge protector, comprising: the device comprises a shell, positive electrodes and negative electrodes are fixedly connected to two sides of the bottom of the shell respectively, a fixed shaft is fixedly connected to the inner wall of the shell, a conductive tripping elastic sheet is rotationally connected to the surface of the fixed shaft, a first spring is fixedly connected to one side of the conductive tripping elastic sheet, a central shaft is fixedly connected to the inner wall of the shell, a rotating rod is rotationally connected to the surface of the central shaft, and a strip-shaped hole is formed in one end of the rotating rod. The utility model provides a power supply surge protector, which is characterized in that a sliding block is moved to different positions, the size of a resistor in a circuit is adjusted, the circuit is cut off, the resistor is increased when the protector is started, the current passing through the circuit is reduced, the instantaneous current when the power supply is started is effectively reduced, the safety of the protector is improved, and a contact is contacted with an insulating sleeve and not contacted with a conductive tube when the protector is closed, so that the circuit is cut off, and the use safety of the protector is further improved.
Description
Technical Field
The utility model relates to the field of electrical equipment protection, in particular to a power supply surge protector.
Background
A surge is a transient overvoltage exceeding the normal operating voltage, a severe pulse in just a few parts per million seconds, which can cause serious damage to the equipment. The surge protector is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines, and has the function of limiting the instantaneous overvoltage of a power line and a signal transmission line to the voltage range which can be born by the equipment or the system, or discharging strong surge current into the ground to prevent the equipment or the system from being impacted.
The existing surge protector is usually formed by welding an electrode of a piezoresistor with an elastic sheet, when an extra-large overload current passes through, the welding flux between the elastic sheet and the electrode reaches a molten state, and the elastic sheet is separated from the electrode through a tripping mechanism to perform electrical isolation, so that the function of protecting equipment is achieved.
The existing tripping mechanism of the surge protector has lower connection strength of welding points, and can generate very high instantaneous current when being connected with a power supply, so that the welding joint of the piezoresistor and the elastic sheet has signs of melting, the circuit is easy to cut off, overcurrent is avoided, and the use safety of equipment and the power supply is affected
In a thermal tripping device in a surge protector, a conductive tripping elastic sheet and a piezoresistor are welded together by using low-temperature soldering tin generally, when a power supply is connected, the generated instantaneous current can melt the low-temperature soldering tin, so that a circuit is cut off, the use of the power supply is affected, and when the protector is not used, if the circuit is accidentally electrified under the influence of the outside, the power supply is easy to damage, and potential safety hazards exist. Accordingly, there is a need to provide a power supply surge protector that solves the above-mentioned problems.
Disclosure of Invention
The utility model provides a power supply surge protector, which solves the problems that when a power supply is connected, an instantaneous current generated can melt a low-temperature soldering tin, a circuit is cut off, the use of the power supply is affected, and when the protector is not used, if the circuit is accidentally electrified under the influence of the outside, the power supply is easy to damage and potential safety hazards exist.
In order to solve the technical problems, the power supply surge protector provided by the utility model comprises: the device comprises a shell, wherein a positive electrode and a negative electrode are fixedly connected to two sides of the bottom of the shell respectively, a fixed shaft is fixedly connected to the inner wall of the shell, a conductive trip elastic sheet is rotationally connected to the surface of the fixed shaft, a first spring is fixedly connected to one side of the conductive trip elastic sheet, a central shaft is fixedly connected to the inner wall of the shell, a rotating rod is rotationally connected to the surface of the central shaft, a strip-shaped hole is formed in one end of the rotating rod, and a second spring is fixedly connected to one side of the rotating rod, which is far away from the strip-shaped hole;
the device comprises a mounting plate, wherein the mounting plate is fixedly connected to the inner wall of a shell, a conductive pipe is fixedly connected to the surface of the mounting plate, a resistance wire is fixedly connected to the bottom of the conductive pipe, an insulating pipe is fixedly connected to the top of the conductive pipe, a piezoresistor is fixedly connected to one side of the conductive pipe, one side of the piezoresistor is welded with one side of a conductive trip elastic sheet, a sliding sleeve is slidingly connected to the surface of the conductive pipe, a contact is connected to the inner portion of the sliding sleeve in a rotating manner, one side of the contact is in contact with the surface of the conductive pipe, a cylinder is fixedly connected to one side of the sliding sleeve, and the surface of the cylinder is slidingly connected with the inner wall of a strip-shaped hole.
Preferably, the welding method between the piezoresistor and the conductive trip elastic sheet is low-temperature soldering.
Preferably, a sliding groove is formed in the top of the shell, a sliding block is connected in the sliding groove in a sliding mode, a sloping plate is fixedly connected to the bottom of the sliding block, and one side of the sloping plate is in contact with one end of the rotating rod.
Preferably, the draw-in groove has been seted up to the inner wall of spout, the cavity has been seted up in the slider, the slide hole has all been seted up to the both sides of cavity, the inner wall sliding connection of slide hole has the fixture block, the fixture block is pegged graft with the draw-in groove, one side of fixture block articulates there is the connecting rod, the fixed slot has been seted up at the top of slider, the inner wall sliding connection of fixed slot has the button, fixedly connected with reset spring between button and the fixed slot, the bottom fixedly connected with movable rod of button, the bottom of movable rod runs through and extends to in the cavity and articulated with one side of connecting rod.
Preferably, a conductive wire is connected between the negative electrode and the conductive trip elastic sheet.
Preferably, the contact is made of conductive metal.
Preferably, one end of the rotating rod is provided with a round head.
Compared with the related art, the power supply surge protector provided by the utility model has the following beneficial effects:
the utility model provides a power supply surge protector, which is characterized in that a sliding block is moved to different positions, the size of a resistor in a circuit is adjusted, the circuit is cut off, the resistor is increased when the protector is started, the current passing through the circuit is reduced, the instantaneous current when the power supply is started is effectively reduced, the safety of the protector is improved, and a contact is contacted with an insulating sleeve and not contacted with a conductive tube when the protector is closed, so that the circuit is cut off, and the use safety of the protector is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a power surge protector provided by the present utility model;
FIG. 2 is a perspective view of the sliding sleeve shown in FIG. 1;
fig. 3 is a cross-sectional view of the slider shown in fig. 1.
Reference numerals in the drawings: 1. the device comprises a shell, 2, a positive electrode, 3, a negative electrode, 4, a fixed shaft, 5, a conductive trip elastic sheet, 6, a piezoresistor, 7, a first spring, 8, a conductive wire, 9, a mounting plate, 10, a conductive pipe, 11, a resistance wire, 12, a central shaft, 13, a rotating rod, 14, a strip-shaped hole, 15, a second spring, 16, a sliding sleeve, 17, a contact, 18, a cylinder, 19, a sliding chute, 20, a sliding block, 21, a sloping plate, 22, a clamping groove, 23, a cavity, 24, a sliding hole, 25, a clamping block, 26, a connecting rod, 27, a fixed groove, 28, a reset spring, 29, a button, 30 and a movable rod.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
Referring to fig. 1-3 in combination, fig. 1 is a schematic structural diagram of a first embodiment of a power surge protector according to the present utility model; FIG. 2 is a perspective view of the sliding sleeve shown in FIG. 1;
fig. 3 is a cross-sectional view of the slider shown in fig. 1. A power supply surge protector comprising: the voltage-sensitive resistor comprises a shell 1, wherein a positive electrode 2 and a negative electrode 3 are fixedly connected to two sides of the bottom of the shell 1 respectively, the positive electrode 2 is electrically connected with a contact 17, the welding position of the negative electrode 3 and a voltage-sensitive resistor 6 is electrically connected, the inner wall of the shell 1 is fixedly connected with a fixed shaft 4, the surface of the fixed shaft 4 is rotationally connected with a conductive tripping elastic sheet 5, one side of the conductive tripping elastic sheet 5 is fixedly connected with a first spring 7, the inner wall of the shell 1 is fixedly connected with a central shaft 12, the surface of the central shaft 12 is rotationally connected with a rotating rod 13, one end of the rotating rod 13 is provided with a strip-shaped hole 14, and one side of the rotating rod 13 far away from the strip-shaped hole 14 is fixedly connected with a second spring 15;
the mounting plate 9, mounting plate 9 fixedly connected with in the inner wall of casing 1, the fixed surface of mounting plate 9 is connected with electrically conductive pipe 10, the bottom fixedly connected with resistance wire 11 of electrically conductive pipe 10, the top fixedly connected with insulating tube of electrically conductive pipe 10, one side fixedly connected with piezo-resistor 6 of electrically conductive pipe 10, one side of piezo-resistor 6 and the welding of one side of electrically conductive tripping shell fragment 5, the surface sliding connection of electrically conductive pipe 10 has sliding sleeve 16, the inside rotation of sliding sleeve 16 is connected with contact 17, contact 17's one side and electrically conductive pipe 10's surface contact, one side fixedly connected with cylinder 18 of sliding sleeve 16, the surface of cylinder 18 and the inner wall sliding connection of bar hole 14.
The welding method between the piezoresistor 6 and the conductive trip elastic sheet 5 is low-temperature soldering, so that if a large current flows, heat is generated to fuse the welding position between the piezoresistor 6 and the conductive trip elastic sheet, thereby timely cutting off a circuit and protecting the use safety of equipment and a power supply.
The top of casing 1 has seted up spout 19, sliding connection has slider 20 in the spout 19, the bottom fixedly connected with swash plate 21 of slider 20, one side of swash plate 21 and the one end contact of dwang 13.
The inner wall of spout 19 has seted up draw-in groove 22, cavity 23 has been seted up in slider 20, slide hole 24 has all been seted up to the both sides of cavity 23, slide hole 24's inner wall sliding connection has fixture block 25, fixture block 25 and draw-in groove 22 grafting, one side of fixture block 25 articulates there is connecting rod 26, fixed slot 27 has been seted up at the top of slider 20, fixed slot 27's inner wall sliding connection has button 29, fixedly connected with reset spring 28 between button 29 and the fixed slot 27, button 29's bottom fixedly connected with movable rod 30, the bottom of movable rod 30 runs through and extends to in cavity 23 and articulated with one side of connecting rod 26.
By pressing the button 29, the return spring 28 is compressed, the movable rod 30 drives the connecting rod 26 to swing, the clamping block 25 moves in the sliding hole 24 and is separated from the clamping groove 22, the sliding block 20 can move in the sliding groove 19, if the button is released, the movable rod 30 drives the connecting rod 26 to swing under the elasticity of the return spring 28, and the clamping block 25 is inserted into the clamping groove 22, so that the sliding block 20 is positioned, and the sliding block has a simple structure and is convenient to use.
And a conductive wire 8 is connected between the negative electrode 3 and the conductive trip elastic sheet 5.
By arranging the conductive wire 8, the conductive sensitivity between the negative electrode 3 and the conductive trip elastic sheet 5 is improved, and the circuit can be rapidly cut off if the circuit has faults.
The contact 17 is made of conductive metal.
One end of the rotating rod 13 is provided with a round head, so that friction between the rotating rod and the inclined plate 21 can be reduced, and the service life of the rotating rod is prolonged.
The working principle of the power supply surge protector provided by the utility model is as follows:
before the power is used, the sliding block 20 is firstly moved to the leftmost end of the sliding groove 19, the inclined surface of the inclined plate 21 is far away from the rotating rod 13, the rotating rod 13 rotates by taking the central shaft 12 as the axis under the action of elastic shrinkage force of the second spring 15, the sliding sleeve 16 is driven to descend through the strip-shaped hole 14 and the cylinder 18, the contact 17 is contacted with the resistance wire 11, the resistance is increased, and the passing current is small.
When the protector is used, positive and negative electrodes on the protector are inserted into a base of the protector, instantaneous current when the power is started is effectively reduced, the safety of the protector is improved, then the sliding block 20 slides rightwards in the sliding groove 19 and moves to the rightmost end of the sliding groove 19, the inclined surface of the inclined plate 21 abuts against the rotating rod 13, the rotating rod 13 rotates around the central shaft 12 and compresses the second spring 15, the sliding sleeve 16 is driven to ascend through the strip-shaped hole 14 and the cylinder 18, the contact 17 is gradually ascended to be in contact with the conductive tube 10, the resistance is reduced, current flowing in the piezoresistor 6 tends to be stable, the use safety of the protector is improved, when the protector is closed, the sliding block 20 is moved to the rightmost end of the sliding groove 19, the sliding sleeve 16 is moved to the surface of the insulating sleeve, the contact 17 is in contact with the insulating sleeve and is not in contact with the conductive tube 10, and thus a circuit is cut off, and the use safety of the protector is further improved. If excessive current passes through the circuit, the low-temperature soldering position of the piezoresistor 6 and the conductive trip elastic sheet 5 is melted due to high temperature, and the conductive trip elastic sheet 5 swings around the fixed shaft 4 under the spring contraction force of the first spring 7, so that the piezoresistor 6 is rapidly far away from the conductive trip elastic sheet 5, and the circuit is further protected.
Compared with the related art, the power supply surge protector provided by the utility model has the following beneficial effects:
the utility model provides a power supply surge protector, which is characterized in that a sliding block 20 is moved to different positions, the size of a resistor in a circuit is adjusted, and the circuit is cut off, when the protector is started, the resistor is increased, so that the current passing through the circuit is reduced, the instantaneous current when the power supply is started is effectively reduced, the safety of the protector is improved, and when the protector is closed, a contact 17 is contacted with an insulating sleeve and is not contacted with a conductive tube 10, so that the circuit is cut off, and the use safety of the protector is further improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (5)
1. A power supply surge protector, comprising: the device comprises a shell, wherein a positive electrode and a negative electrode are fixedly connected to two sides of the bottom of the shell respectively, a fixed shaft is fixedly connected to the inner wall of the shell, a conductive trip elastic sheet is rotationally connected to the surface of the fixed shaft, a first spring is fixedly connected to one side of the conductive trip elastic sheet, a central shaft is fixedly connected to the inner wall of the shell, a rotating rod is rotationally connected to the surface of the central shaft, a strip-shaped hole is formed in one end of the rotating rod, and a second spring is fixedly connected to one side of the rotating rod, which is far away from the strip-shaped hole;
the device comprises a shell, a mounting plate, a conductive pipe, a resistor wire, an insulating pipe, a piezoresistor, a sliding sleeve, a contact, a cylinder, a strip-shaped hole and a strip-shaped hole, wherein the mounting plate is fixedly connected to the inner wall of the shell;
a sliding groove is formed in the top of the shell, a sliding block is connected in the sliding groove in a sliding mode, a sloping plate is fixedly connected to the bottom of the sliding block, and one side of the sloping plate is in contact with one end of the rotating rod;
the inner wall of spout has seted up the draw-in groove, the cavity has been seted up in the slider, the slide hole has all been seted up to the both sides of cavity, the inner wall sliding connection of slide hole has the fixture block, fixture block and draw-in groove peg graft, one side of fixture block articulates there is the connecting rod, the fixed slot has been seted up at the top of slider, the inner wall sliding connection of fixed slot has the button, fixedly connected with reset spring between button and the fixed slot, the bottom fixedly connected with movable rod of button, the bottom of movable rod runs through and extends to in the cavity and articulated with one side of connecting rod.
2. The power surge protector of claim 1, wherein the method of welding between the varistor and the conductive trip dome is low temperature soldering.
3. The power supply surge protector of claim 1, wherein a conductive wire is connected between the negative electrode and the conductive trip tab.
4. The power surge protector of claim 1, wherein the contact is made of conductive metal.
5. The power surge protector of claim 1, wherein one end of the rotating rod is provided as a rounded head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222540270.4U CN219643590U (en) | 2022-09-26 | 2022-09-26 | Power supply surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222540270.4U CN219643590U (en) | 2022-09-26 | 2022-09-26 | Power supply surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219643590U true CN219643590U (en) | 2023-09-05 |
Family
ID=87808419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222540270.4U Active CN219643590U (en) | 2022-09-26 | 2022-09-26 | Power supply surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219643590U (en) |
-
2022
- 2022-09-26 CN CN202222540270.4U patent/CN219643590U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |