CN116313636A - Current overload self-recovery protector - Google Patents
Current overload self-recovery protector Download PDFInfo
- Publication number
- CN116313636A CN116313636A CN202310062403.8A CN202310062403A CN116313636A CN 116313636 A CN116313636 A CN 116313636A CN 202310062403 A CN202310062403 A CN 202310062403A CN 116313636 A CN116313636 A CN 116313636A
- Authority
- CN
- China
- Prior art keywords
- conducting plate
- insulating shell
- memory spring
- elastic
- current overload
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001012 protector Effects 0.000 title claims abstract description 24
- 238000011084 recovery Methods 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/323—Thermally-sensitive members making use of shape memory materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fuses (AREA)
- Thermally Actuated Switches (AREA)
Abstract
The utility model provides a current overload self-recovery protector, includes insulating housing and memory spring, characterized by: the insulating shell is formed by buckling and connecting two semi-cylinders or cuboids which are symmetrically arranged, an input conducting plate and an output conducting plate are respectively clamped at two ends of the insulating shell, an elastic conducting plate is arranged in the insulating shell along the axial direction of the insulating shell, one end of the elastic conducting plate is fixedly connected with the input conducting plate, and the other end of the elastic conducting plate is movably and electrically connected with the output conducting plate through a conducting contact; the middle part of the insulating shell is provided with a radial hole, the memory spring is arranged in the radial hole, one end of the memory spring is pressed at the middle part of the elastic conducting strip, and when the memory spring reaches a set deformation temperature after being heated, the memory spring stretches to push the elastic conducting strip to deform and be electrically connected with the output conducting strip. The beneficial effects are that: the device has the advantages of few integral parts, simple structure, small volume and low manufacturing cost; can realize long-term repeated use, has sensitive and reliable work and long service life.
Description
Technical Field
The utility model relates to the field of current overload protection, in particular to a current overload self-recovery protector.
Background
With the updating and changing of the electronic industry, the wide application of the temperature fuse and the temperature control switch can be rapidly applied to the fields of household appliances, lighting products, motors, household electrical appliance products, communication products and the like. The electronic component temperature protection device in the current market mainly takes a disposable and self-recovery temperature fuse as a main part, and the service lives of the two products are short, so that the technical requirements of long-term repeated use cannot be met; and the volume is great, is difficult to install on small-size electrical apparatus, and the structure is complicated, and stability is not good.
The utility model discloses a Chinese patent with publication number of CN211265353U, which discloses a repeated memory temperature current electric appliance protector, comprising a shell, wherein two ends of the shell are connected with binding posts or conductive patches, a memory spring and a thrust spring are arranged in the shell, a mandrel and an insulating guide sleeve are arranged in the shell, the insulating guide sleeve is positioned at one end in the shell, the shell is formed by sleeving two conductive sleeves with different lengths on the insulating guide sleeve respectively and connecting the conductive sleeves through insulating glue, and the mandrel is in a stepped shaft shape and is in sliding fit connection with the insulating guide sleeve.
Although this protector can be repeatedly used, there are problems as follows: 1. when the guide post is in operation, current flows in from the binding post at one end and then sequentially passes through the thrust spring, the mandrel and the conducting strip to be conducted to the binding post at the other end, and the thrust spring generates high temperature when passing through the current, so that the elastic failure of the thrust spring is easily caused, the normal conduction of the current is influenced, and the guide post product fails; 2. the spring is heated through dabber conduction heat in its during operation, therefore the conduction speed is slow, leads to the product to meet when heavy current contact delay disconnection easily, causes the damage of load.
Disclosure of Invention
The utility model aims to provide a current overload self-recovery protector with simple structure, sensitive and reliable work and long service life.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the current overload self-recovery protector comprises an insulating shell and a memory spring, wherein the insulating shell is formed by buckling and connecting two semi-cylinders or cuboids which are symmetrically arranged, an input conducting plate and an output conducting plate are respectively clamped at two ends of the insulating shell, an elastic conducting plate is axially arranged in the insulating shell, one end of the elastic conducting plate is fixedly connected with the input conducting plate, and the other end of the elastic conducting plate is movably and electrically connected with the output conducting plate through a conducting contact;
the middle part of the insulating shell is provided with a radial hole, the memory spring is arranged in the radial hole, one end of the memory spring is pressed at the middle part of the elastic conducting strip, and when the memory spring reaches a set deformation temperature after being heated, the memory spring stretches to push the elastic conducting strip to deform and be electrically connected with the output conducting strip.
As a further preferred aspect, the insulating housing is made of polytetrafluoroethylene material, and edges of the butt joint of the two semi-cylinders or the cuboid are welded with each other.
Preferably, the insulating shell is made of alumina ceramic material, two ends of the insulating shell are respectively sleeved with a metal end cover, and the two semi-cylinders or the cuboid are formed by butt-buckling connection of the metal end covers at the two ends.
As a further preferable aspect, a trapezoidal accommodating groove is provided in the insulating housing corresponding to the other end of the elastic conductive sheet and located at the other side of the memory spring, for accommodating the deformed elastic conductive sheet.
As a further preferable mode, the elastic conducting plate is made of beryllium copper, and a honeycomb through hole is formed in the middle of the elastic conducting plate so as to determine rated current passing through the protector.
Preferably, the conductive contact is made of silver alloy, and the input conductive sheet and the output conductive sheet are made of red copper sheet.
Preferably, the memory spring is made of nickel-titanium alloy.
The beneficial effects of the utility model are as follows:
1. the protector only comprises an insulating shell, an input conducting plate, an output conducting plate, an elastic conducting plate, a memory spring and other parts, and has the advantages of few whole parts, simple structure, small volume and low manufacturing cost.
2. The structure is tightly matched and the work is reliable; because one end of the memory spring is pressed at the middle part of the elastic conducting plate, when the working current passing through the elastic conducting plate exceeds the rated current by a certain multiple, the heat generated by the elastic conducting plate is transferred to the memory spring, so that the memory spring reaches the set deformation temperature after being heated, the elastic conducting plate is pushed to elastically deform by elongation, and the electric connection with the output conducting plate can be immediately disconnected, thereby the circuit is disconnected to play a role in protection; when the working current is recovered to normal rated current, the temperature of the memory spring is reduced and quickly contracted, and the memory spring can quickly recover the electric connection with the output conducting plate by elastically deforming and resetting the elastic conducting plate, so that normal power supply is realized, and the protector can be repeatedly used for a long time, and has the advantages of sensitive and reliable work and long service life.
3. The device has wide application range, is suitable for the current overload protection of products with rated currents of 5A-50A or is used as a temperature control switch to provide temperature overload protection, and is especially suitable for the current overload repeated protection of electric tools and new energy automobile battery packs.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present utility model;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present utility model;
fig. 4 is a B-B cross-sectional view of fig. 3.
In the figure: the insulation shell 1, the clamping groove 101, the accommodating groove 102, the input conducting strip 2, the rivet 3, the elastic conducting strip 4, the honeycomb-shaped through hole 401, the memory spring 5, the output conducting strip 6, the conducting contact 7 and the metal end cover 8.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, the current overload self-recovery protector comprises an insulating shell 1 and a memory spring 5, wherein the insulating shell 1 is formed by connecting two semi-cylinders or cuboid opposite buckles which are symmetrically arranged, two ends of the insulating shell 1 are respectively clamped with an input conducting plate 2 and an output conducting plate 6, the input conducting plate 2 and the output conducting plate 6 are respectively inserted and clamped in clamping grooves 101 formed by opposite buckles at two ends of the insulating shell 1, an elastic conducting plate 4 is arranged in a cavity of the insulating shell 1 along the axial direction of the cavity, one end of the elastic conducting plate 4 is fixedly connected with the input conducting plate 2 through a rivet 3, and the other end of the elastic conducting plate 4 is positioned below the inner end of the output conducting plate 6 and is in contact with the output conducting plate 6 through a pair of conducting contacts 7 so as to realize movable electric connection.
The middle part of the insulating shell 1 is provided with a radial hole along the radial direction, the radial hole is formed by semicircular grooves arranged on two semi-cylinders or cuboids, the memory spring 5 is embedded in the radial hole, one end of the memory spring is pressed on the middle part of the elastic conducting plate 4, and when the memory spring 5 reaches a set deformation temperature after being heated, the memory spring is stretched to push the elastic conducting plate 4 to bend and deform so as to disconnect the electric connection with the output conducting plate 6.
The insulating shell 1 is made of polytetrafluoroethylene material, and the edges of the butt joint positions of the two semi-cylinders or the cuboid are welded with each other. A trapezoidal accommodating groove 102 is provided in the insulating housing 1 corresponding to the other end of the elastic conductive sheet 4 and located at the other side of the memory spring 5 so as to accommodate the deformed elastic conductive sheet 4.
The elastic conducting plate 4 is made of beryllium copper, a honeycomb-shaped through hole 401 is formed in the middle of the elastic conducting plate, and the diameter and the number of the honeycomb-shaped through holes 401 are determined according to the rated current passing through the protector, so that the rated current passing through the protector can be determined conveniently. The conductive contacts 7 are made of silver alloy, the input conductive sheet 2 and the output conductive sheet 6 are respectively made of red copper sheet materials, and the memory springs 5 are made of nickel-titanium alloy materials.
When the protector is used, the input conducting plate 2 and the output conducting plate 6 are respectively connected with wires and then connected between a power supply and a load, and current flows through the input conducting plate 2, the elastic conducting plate 4 and the output conducting plate 6 in sequence, because one end of the memory spring 5 is pressed at the middle part of the elastic conducting plate 4, when the working current passing through the elastic conducting plate 4 exceeds a certain multiple of rated current, the heat generated by the elastic conducting plate 4 is transferred to the memory spring 5, so that the memory spring 5 reaches a set deformation temperature after being heated, the elastic conducting plate 4 is pushed to elastically deform by extension, and the electric connection with the output conducting plate 6 can be immediately disconnected, thereby the circuit is disconnected to play a role in protection; when the working current is recovered to the normal rated current, the temperature of the memory spring 5 is reduced and is quickly contracted, and the electric connection with the output conducting strip 6 can be quickly recovered through the elastic deformation reset of the elastic conducting strip 4, so that the normal power supply is realized.
Example 2
As shown in fig. 3-4, the current overload self-recovery protector comprises an insulating shell 1 and a memory spring 5, wherein the insulating shell 1 is formed by connecting two symmetrically arranged semi-cylinders or rectangular solids in a buckling manner, and an input conducting plate 2 and an output conducting plate 6 are respectively clamped at two ends of the insulating shell 1. The insulating shell 1 is made of alumina ceramic material, metal end covers 8 are respectively and tightly sleeved at two ends of the insulating shell 1, and the two semi-cylinders or the cuboid are formed by butt-buckling connection of the metal end covers 8 at two ends. The input conductive sheet 2 and the output conductive sheet 6 respectively pass through corresponding metal end covers 8.
Other structures of this embodiment are the same as those of embodiment 1, and the description of this embodiment is omitted.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. The utility model provides a current overload self-recovery protector, includes insulating housing and memory spring, characterized by: the insulating shell is formed by buckling and connecting two semi-cylinders or cuboids which are symmetrically arranged, an input conducting plate and an output conducting plate are respectively clamped at two ends of the insulating shell, an elastic conducting plate is arranged in the insulating shell along the axial direction of the insulating shell, one end of the elastic conducting plate is fixedly connected with the input conducting plate, and the other end of the elastic conducting plate is movably and electrically connected with the output conducting plate through a conducting contact;
the middle part of the insulating shell is provided with a radial hole, the memory spring is arranged in the radial hole, one end of the memory spring is pressed at the middle part of the elastic conducting strip, and when the memory spring reaches a set deformation temperature after being heated, the memory spring stretches to push the elastic conducting strip to deform and be electrically connected with the output conducting strip.
2. The current overload self-recovery protector of claim 1, wherein: the insulating shell is made of polytetrafluoroethylene materials, and edges of the butt joint positions of the two semi-cylinders or the cuboid are welded with each other.
3. The current overload self-recovery protector of claim 1, wherein: the insulating shell is made of alumina ceramic material, metal end covers are respectively sleeved at two ends of the insulating shell, and the two semi-cylinders or the cuboid are formed by butt-buckling connection of the metal end covers at two ends.
4. A current overload self-recovery protector according to any one of claims 1-3 wherein: a trapezoid accommodating groove is formed in the insulating shell, corresponding to the other end of the elastic conductive sheet, and located on the other side of the memory spring, and is used for accommodating the deformed elastic conductive sheet.
5. The current overload self-recovery protector of claim 4, wherein: the elastic conducting plate is made of beryllium copper, and a honeycomb through hole is formed in the middle of the elastic conducting plate so as to determine rated current passing through the protector.
6. A current overload self-healing protector according to claim 1 or 5 wherein: the conductive contacts are made of silver alloy, and the input conductive sheet and the output conductive sheet are made of red copper sheet materials.
7. The current overload self-recovery protector of claim 6, wherein: the memory spring is made of nickel-titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310062403.8A CN116313636A (en) | 2023-01-20 | 2023-01-20 | Current overload self-recovery protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310062403.8A CN116313636A (en) | 2023-01-20 | 2023-01-20 | Current overload self-recovery protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116313636A true CN116313636A (en) | 2023-06-23 |
Family
ID=86796809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310062403.8A Pending CN116313636A (en) | 2023-01-20 | 2023-01-20 | Current overload self-recovery protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116313636A (en) |
-
2023
- 2023-01-20 CN CN202310062403.8A patent/CN116313636A/en active Pending
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