CN210272230U - Power supply surge protector - Google Patents
Power supply surge protector Download PDFInfo
- Publication number
- CN210272230U CN210272230U CN201921010340.7U CN201921010340U CN210272230U CN 210272230 U CN210272230 U CN 210272230U CN 201921010340 U CN201921010340 U CN 201921010340U CN 210272230 U CN210272230 U CN 210272230U
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- China
- Prior art keywords
- sliding
- contact
- metal sleeve
- rotating plate
- shell
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Abstract
The utility model relates to an electrical equipment protection field discloses a power surge protector. Comprises a shell, a sliding mechanism, a fixed rod, a fixed frame, a metal sleeve, a resistance wire and an elastic sheet separation piece. The fixed rod is movably provided with a rotating plate, one end of the rotating plate is connected with the sliding mechanism, the other end of the rotating plate is provided with a rotating rod, and the rotating rod is provided with a contact. The contact is in sliding contact with the metal sleeve and the resistance wire. The metal sleeve is connected with a piezoresistor, and the elastic piece separating piece is connected with the piezoresistor through welding. The utility model discloses an adopt slide mechanism, the drive rotor plate makes the contact on the dwang carry out up-and-down motion, with metal sleeve and resistance wire sliding contact. When the power is switched on, the influence of the resistance wire ensures that the instantaneous current cannot be melted and separated because of overlarge temperature at the welding position of the piezoresistor and the elastic sheet separating piece, reduces the damage of the protector, and improves the use safety of the power and equipment.
Description
Technical Field
The utility model relates to an electrical equipment protection field, in particular to power surge protector.
Background
Surges are transient over voltages exceeding normal operating voltages, are a sharp pulse in only a few millionths of a second, and can cause serious damage to 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 entering a power line and a signal transmission line within the voltage range which can be borne by the equipment or system or discharging strong surge current into the ground so as to prevent the equipment or the system from being impacted. The prior surge protector usually welds an electrode of an overvoltage sensitive resistor and an elastic sheet, when an over-load current is excessively large, a welding material between the elastic sheet and the electrode reaches a melting state, and the elastic sheet is separated from the electrode through a tripping mechanism to carry out electrical isolation, thereby achieving the function of protecting equipment. However, in the conventional tripping mechanism of the surge protector, the connection strength of a welding point is low, and when a power supply is switched on, high instantaneous current can be generated, so that the welding connection part of the piezoresistor and the elastic sheet has a melting sign, a circuit is easily cut off, overcurrent cannot be caused, and the use safety of equipment and the power supply is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a power surge protector through adopting slide mechanism, drives the rotor plate, makes the contact on the dwang carry out up-and-down motion, with metal sleeve and resistance wire sliding contact. When the power is switched on, the influence of the resistance wire ensures that the instantaneous current cannot be melted and separated because of overlarge temperature at the welding position of the piezoresistor and the elastic sheet separating piece, reduces the damage of the protector, and improves the use safety of the power and equipment.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a power supply surge protector comprises a shell, a sliding mechanism, a fixed rod, a fixed frame, a metal sleeve, a resistance wire and an elastic sheet separation piece; the fixed rod, the fixed frame and the sliding mechanism are fixedly arranged in the shell; the fixed rod is positioned between the fixed frame and the sliding mechanism; a connecting shaft is inserted in the fixed rod, and a rotating plate is rotatably connected to the connecting shaft; one end of the rotating plate is connected with the sliding mechanism, and the sliding mechanism drives the rotating plate to move up and down; the other end of the rotating plate is provided with a rotating shaft, the rotating shaft is movably connected with a rotating rod, and the rotating rod is connected with the rotating plate through a first supporting spring; a contact is arranged on the rotating rod; the fixed frame is arranged on one side of the contact; the metal sleeve is sleeved on the fixing frame, and the contact is in contact with the metal sleeve; the lower part of the metal sleeve is wound with the resistance wire; the upper part of the metal sleeve is connected with a piezoresistor; the shell is internally provided with the elastic sheet disengaging piece; the elastic sheet separating piece is connected with the piezoresistor through welding, one end of the elastic sheet separating piece is sleeved on the positioning column in the shell, and the other end of the elastic sheet separating piece is connected with the shell through a return spring; and a first electrode and a second electrode are respectively arranged in the shell, the first electrode is connected with the contact, and the second electrode is connected with the welding part of the piezoresistor.
As a preferred scheme of the utility model, the sliding mechanism comprises a sliding switch and a sliding push block; a sliding groove is formed in the shell; the sliding push block is movably arranged in the sliding groove, and the lower part of the sliding push block is provided with an inclined plane structure; the sliding switch is arranged above the sliding push block.
As an optimized scheme of the utility model be provided with second supporting spring between dead lever and the slide mechanism, second supporting spring's both ends respectively with rotor plate and casing are connected.
As an optimized scheme of the utility model, the shell fragment break away from the piece with the second electrode is connected through the copper strands.
As an optimized scheme of the utility model, the shell fragment break away from the piece with piezo-resistor's welding is low temperature soldering.
As an optimized proposal of the utility model, the material of the contact is conductive metal.
To sum up, the utility model discloses following beneficial effect has: by adopting the sliding mechanism, the rotating plate is driven, so that the contact on the rotating rod moves up and down and is in sliding contact with the metal sleeve and the resistance wire. When the power is switched on, the influence of the resistance wire ensures that the instantaneous current cannot be melted and separated because of overlarge temperature at the welding position of the piezoresistor and the elastic sheet separating piece, reduces the damage of the protector, and improves the use safety of the power and equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings:
1-shell 2-sliding push block 3-sliding switch 4-fixed rod
5-first supporting spring 6-rotating rod 7-contact 8-fixing frame
9-piezoresistor 10-reset spring 11-copper stranded wire 12-elastic sheet disengaging piece
13-second electrode 14-metal sleeve 15-resistance wire 16-rotating shaft
17-rotating plate 18-connecting shaft 19-second supporting spring 20-first electrode
21-chute 22-positioning post.
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 efforts belong to the protection scope of the present invention.
Examples
As shown in fig. 1, the present invention relates to a power surge protector for protecting power or equipment, and specifically, the power surge protector comprises a casing 1, a sliding mechanism, a fixing rod 4, a fixing frame 8, a metal sleeve 14, a resistance wire 15 and a spring sheet separation member 12.
A fixing lever 4, a fixing bracket 8, and a sliding mechanism are fixedly mounted in the housing 1. The fixed rod 4 is located between the fixed frame 8 and the sliding mechanism. A connecting shaft 18 is inserted into the fixed lever 4, and a rotating plate 17 is rotatably connected to the connecting shaft 18. One end of the rotating plate 17 is connected with a sliding mechanism, and the sliding mechanism drives the rotating plate 17 to move up and down. A second supporting spring 19 is provided between the fixing lever 4 and the sliding mechanism, and both ends of the second supporting spring 19 are connected to the rotating plate 17 and the housing 1, respectively. The sliding mechanism comprises a sliding switch 3 and a sliding push block 2, a sliding groove 21 is formed in the shell 1, the sliding push block 2 is movably mounted in the sliding groove 21, the lower portion of the sliding push block 2 is arranged to be of an inclined surface structure, the sliding switch 3 is mounted above the sliding push block 2 and used for controlling the rotating plate 17 to move up and down along the inclined surface of the sliding push block 2. A rotating shaft 16 is installed at the other end of the rotating plate 17, a rotating rod 6 is movably connected to the rotating shaft 16, and the rotating rod 6 and the rotating plate 17 are connected through a first supporting spring. The contact 7 is mounted on the rotating rod 6, and the contact 7 is made of conductive metal so as to transmit electricity to the piezoresistor 9. A fixing frame 8 is provided at one side of the contact 7. The metal sleeve 14 is sleeved on the fixing frame 8, and the contact 7 is contacted with the metal sleeve 14. A resistance wire 15 is wound around the lower portion of the metal sleeve 14. The upper part of the metal sleeve 14 is connected with a piezoresistor 9, when the power supply is started, the contact 7 of the protector firstly contacts the resistance wire 15 and then contacts the metal sleeve 14, so that the current which instantaneously flows when the power supply is started is reduced in order to increase the resistance, and the stability of the protector is improved. A spring release 12 is provided in the housing 1. The elastic sheet separating piece 12 is connected with the piezoresistor 9 in a welding mode, and the elastic sheet separating piece 12 and the piezoresistor 9 are welded in a low-temperature tin soldering mode, so that a circuit can be cut off timely when large current flows, and the use safety of equipment and a power supply is protected. One end of the elastic sheet separating element 12 is sleeved on the positioning column 22 in the housing 1, and the other end of the elastic sheet separating element 12 is connected with the housing 1 through the return spring 10. A first electrode 20 and a second electrode 13 are respectively mounted in the housing 1, the first electrode 20 is connected to the contact 7, and the second electrode 13 is connected to the welding point of the varistor 9. The elastic sheet separating piece 12 is connected with the second electrode 13 through the copper stranded wire 11, so that the conductivity sensitivity is improved, and when the circuit has a fault, the circuit can be quickly cut off.
The utility model discloses an action principle process: the protector is firstly inserted into a base of the protector, then the first electrode 20 and the second electrode 13 are communicated with a power supply, the sliding switch 3 is pushed upwards, the rotating plate 17 moves downwards along the inclined plane of the sliding push block 2, the rotating plate 17 is pulled by the second supporting spring 19 to drive the rotating rod 6, the contact 7 made of conductive metal moves upwards from bottom to top, and the contact 7 is firmly contacted with the metal sleeve 14 through the first supporting spring 5. Because the resistance wire 15 is wound at the lower part of the metal sleeve 14, when the protector is opened, the contact 7 firstly contacts the resistance wire 15, and at the moment, the resistance is larger, and the passing current is small. The varistor 9 does not generate a high temperature, which leads to signs of melting at the weld of the varistor 9. Then, the protector slowly moves upwards to contact the metal sleeve 14, and at the moment, the current flowing in the piezoresistor 9 tends to be stable, so that the use safety of the protector is improved. When the protector is closed, the sliding switch 3 is pushed downwards, the rotating plate 17 moves upwards along the inclined plane of the sliding push block 2, the second supporting spring 19 pulls the rotating plate 17 to drive the rotating rod 6, the contact 7 made of the conductive metal material moves from top to bottom, the resistance is changed from small to large, the passing current is changed from large to small, or the contact 7 directly leaves the surface of the metal sleeve 14 and does not contact with the metal sleeve 14. At this time, the current in the circuit is cut off. When a large current flows, the welding part of the piezoresistor 9 and the elastic sheet separating piece 12 can be melted, and the piezoresistor 9 is quickly far away from the elastic sheet separating piece 12 by the spring force generated by the reset spring 10, so that the circuit is protected.
The previous description of the disclosed embodiments is provided to enable any person 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 generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended 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 (6)
1. A power supply surge protector is characterized by comprising a shell, a sliding mechanism, a fixed rod, a fixed frame, a metal sleeve, a resistance wire and an elastic sheet separation piece; the fixed rod, the fixed frame and the sliding mechanism are fixedly arranged in the shell; the fixed rod is positioned between the fixed frame and the sliding mechanism; a connecting shaft is inserted in the fixed rod, and a rotating plate is rotatably connected to the connecting shaft; one end of the rotating plate is connected with the sliding mechanism, and the sliding mechanism drives the rotating plate to move up and down; the other end of the rotating plate is provided with a rotating shaft, the rotating shaft is movably connected with a rotating rod, and the rotating rod is connected with the rotating plate through a first supporting spring; a contact is arranged on the rotating rod; the fixed frame is arranged on one side of the contact; the metal sleeve is sleeved on the fixing frame, and the contact is in contact with the metal sleeve; the lower part of the metal sleeve is wound with the resistance wire; the upper part of the metal sleeve is connected with a piezoresistor; the shell is internally provided with the elastic sheet disengaging piece; the elastic sheet separating piece is connected with the piezoresistor through welding, one end of the elastic sheet separating piece is sleeved on the positioning column in the shell, and the other end of the elastic sheet separating piece is connected with the shell through a return spring; and a first electrode and a second electrode are respectively arranged in the shell, the first electrode is connected with the contact, and the second electrode is connected with the welding part of the piezoresistor.
2. The power surge protector of claim 1, wherein the sliding mechanism comprises a sliding switch and a sliding push block; a sliding groove is formed in the shell; the sliding push block is movably arranged in the sliding groove, and the lower part of the sliding push block is provided with an inclined plane structure; the sliding switch is arranged above the sliding push block.
3. The power supply surge protector of claim 1, wherein a second supporting spring is provided between the fixing rod and the sliding mechanism, and both ends of the second supporting spring are connected to the rotating plate and the housing, respectively.
4. The power surge protector of claim 1, wherein the spring plate release member is connected to the second electrode by a copper stranded wire.
5. The power surge protector of claim 1, wherein the spring tab release is soldered to the varistor by low temperature soldering.
6. The power surge protector of claim 1, wherein the contacts are made of a conductive metal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201921010340.7U CN210272230U (en) | 2019-07-01 | 2019-07-01 | Power supply surge protector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201921010340.7U CN210272230U (en) | 2019-07-01 | 2019-07-01 | Power supply surge protector |
Publications (1)
Publication Number | Publication Date |
---|---|
CN210272230U true CN210272230U (en) | 2020-04-07 |
Family
ID=70046216
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201921010340.7U Expired - Fee Related CN210272230U (en) | 2019-07-01 | 2019-07-01 | Power supply surge protector |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN210272230U (en) |
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2019
- 2019-07-01 CN CN201921010340.7U patent/CN210272230U/en not_active Expired - Fee Related
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Legal Events
Date | Code | Title | Description |
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GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 Termination date: 20200701 |