CN111128599A - Electric appliance protector capable of repeatedly memorizing temperature and current - Google Patents
Electric appliance protector capable of repeatedly memorizing temperature and current Download PDFInfo
- Publication number
- CN111128599A CN111128599A CN202010051960.6A CN202010051960A CN111128599A CN 111128599 A CN111128599 A CN 111128599A CN 202010051960 A CN202010051960 A CN 202010051960A CN 111128599 A CN111128599 A CN 111128599A
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- CN
- China
- Prior art keywords
- mandrel
- shell
- conductive
- spring
- guide sleeve
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Classifications
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- 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
- H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
-
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/18—Electrothermal mechanisms with expanding rod, strip, or wire
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fuses (AREA)
- Thermally Actuated Switches (AREA)
Abstract
A temperature and current repeated memory electric appliance protector comprises 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 respectively sleeving two conductive sleeves with different lengths on the insulating guide sleeve and connecting the conductive sleeves through insulating glue, the mandrel is in a stepped shaft shape, a small-diameter shaft section is inserted into the insulating guide sleeve in a sliding fit manner, and the memory spring is sleeved on the small-diameter shaft section of the mandrel and clamped between a shaft shoulder of the mandrel and the insulating guide sleeve; the thrust spring is clamped between the large head end of the mandrel and the inner bottom surface of the corresponding conductive sleeve; in the initial state, the mandrel enables the two conductive sleeves to be electrically connected under the action of the thrust spring; the memory spring is heated and then extends to push the mandrel to slide, so that the electrical connection of the two conductive sleeves is disconnected. The beneficial effects are that simple structure, small, can use repeatedly for a long time, long service life.
Description
Technical Field
The invention relates to a circuit protector, in particular to an electrical appliance protector capable of repeatedly memorizing temperature and current.
Background
With the change and update 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, daily electric appliance products, communication products and the like. The temperature protection device for electronic components in the current market mainly takes disposable and self-recovery temperature fuses as main materials, and the two products have short service life and cannot meet the technical requirement of long-term repeated use; and the volume is bigger, and is difficult to install on small-size electrical apparatus, and the structure is complicated, and stability is not good.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the protector for the electric appliance, which has the advantages of simple structure, small volume, long service life and can be repeatedly used for a long time.
The technical scheme of the invention is as follows:
the utility model provides a relapse memory temperature electric current protector, includes the shell, and the shell both ends are connected with terminal or electrically conductive paster, are equipped with memory spring and thrust spring in the shell, and its special character is: 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 respectively sleeving two conductive sleeves with different lengths on the insulating guide sleeve and connecting the conductive sleeves through insulating glue, the mandrel is in a stepped shaft shape, a small-diameter shaft section is inserted into the insulating guide sleeve in a sliding fit manner, and the memory spring is sleeved on the small-diameter shaft section of the mandrel and clamped between a shaft shoulder of the mandrel and the insulating guide sleeve; the thrust spring is clamped between the large head end of the mandrel and the inner bottom surface of the corresponding conductive sleeve;
in the initial state, the mandrel enables the two conductive sleeves to be electrically connected under the action of the thrust spring; when the memory spring reaches the set deformation temperature, the memory spring is heated to extend to push the mandrel to slide, so that the electrical connection of the two conductive sleeves is disconnected.
Preferably, the memory spring and the thrust spring are arranged in the long conductive sleeve, and the thermal deformation temperature of the memory spring is 75-155 ℃.
Preferably, a conducting strip is arranged between one end of the small diameter of the mandrel and the bottom of the inner hole of the corresponding conducting sleeve in the insulating guide sleeve, and is used for improving conducting performance.
Preferably, a spring seat is arranged between the thrust spring and the inner bottom surface of the corresponding conductive sleeve to improve the stability and the conductivity of the thrust spring.
Preferably, the insulating guide sleeve is made of a ceramic material.
Preferably, the memory spring is made of a titanium-nickel memory alloy material.
More preferably, the terminals are welded to both ends of the housing, respectively.
Preferably, the outer end of the conductive sleeve with the shorter length on the shell is connected with the conductive patch through a wire, a U-shaped clamping piece is clamped at the outer edge of the conductive sleeve with the longer length, and the U-shaped clamping piece forms another conductive patch at the outer end of the corresponding conductive sleeve for being welded on the circuit board.
The invention has the beneficial effects that:
1. the memory spring is sleeved on the small-diameter shaft section of the mandrel and clamped between the shaft shoulder of the mandrel and the insulating guide sleeve; the thrust spring is clamped between the large head end of the mandrel and the inner bottom surface of the corresponding conductive sleeve; therefore, when high temperature is generated by strong current, the memory spring is heated and then extends to push the mandrel to slide, so that the electrical connection of the two conductive sleeves is disconnected, and the power supply is disconnected; when the current is reduced and the temperature is reduced to enable the memory spring to recover the normal memory state, the memory spring recovers the initial length, the mandrel recovers the initial state under the action of the thrust spring to enable the two conductive sleeves to recover the electric connection, and therefore the power supply is switched on; the structure is simple, the work is reliable, the memory spring can repeatedly memorize for tens of thousands of times, the memory spring can be repeatedly used for a long time, and the service life is long.
2. The temperature protector has the advantages that the size is small, the application range is wide, and the temperature protector can be directly connected with a lead through a binding post to serve as a temperature protector to be connected with a power supply and a load; and the conductive patch can be mounted on the circuit board, so that the mounting is convenient.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure: the electric conduction device comprises a shell 1, an electric conduction sleeve 101, an electric conduction sleeve 102, a mandrel 2, a thrust spring 3, a binding post 4, a spring seat 5, a conducting strip 6, insulating glue 7, an insulating guide sleeve 8, a memory spring 9, a conducting patch 10 and a U-shaped clamping piece 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in figure 1, the electric appliance protector capable of memorizing temperature and current repeatedly comprises a shell 1, wherein wiring terminals 4 are welded at two ends of the shell 1 respectively, a thrust spring 3, a mandrel 2, a memory spring 9 and an insulating guide sleeve 8 are sequentially arranged in the shell 1, the insulating guide sleeve 8 is positioned at one end in the shell 1, the shell 1 is formed by respectively sleeving two conductive sleeves 101 and 102 with different lengths on the insulating guide sleeve 8 and connecting the conductive sleeves through insulating glue, outer ports of the two conductive sleeves are closed, and a gap is reserved between the two conductive sleeves sleeved on the insulating guide sleeve 8 and is bonded through resin insulating glue 7. The insulating guide sleeve 8 is made of a ceramic material, the memory spring 9 is made of a titanium-nickel memory alloy material, and the thrust spring 3 is a stainless steel spring.
The mandrel 2 is in a stepped shaft shape, a small-diameter shaft section is inserted into the insulating guide sleeve 8 in a sliding fit mode, and the memory spring 9 is sleeved on the small-diameter shaft section of the mandrel 2 and clamped between a shaft shoulder of the mandrel 2 and the insulating guide sleeve 8; the thrust spring 3 is clamped between the large end of the mandrel 2 and the inner bottom surface of the corresponding conductive sleeve 101.
In an initial state, one small-diameter end of the mandrel 2 is abutted against the bottom of the inner hole of the corresponding conductive sleeve 102 under the action of the thrust spring 3, so that the two conductive sleeves are electrically connected. A silver conducting strip 6 is arranged between one end of the small diameter of the mandrel 2 in the insulating guide sleeve 8 and the bottom of the inner hole of the corresponding conducting sleeve 102, and is used for improving the conducting performance. The memory spring 9 is heated and then extends to push the mandrel 2 to slide, so that the thrust spring 3 is compressed, and the electric connection between the two conductive sleeves is disconnected.
The memory spring 9 and the thrust spring 3 are arranged in the long conductive sleeve 101, and the thermal deformation temperature of the memory spring 9 is 75-155 degrees. A spring seat 5 is arranged between the thrust spring 3 and the inner bottom surface of the corresponding conductive sleeve 101, the thrust spring 3 is sleeved on the spring seat 5, and one end of the spring seat 5 with a large diameter is in plane contact with the inner bottom surface of the conductive sleeve 101 with a long length, so that the conductivity is improved.
When the protector is used, the protector is connected between a power supply and a load after being respectively connected with a lead through the wiring terminals 4 at the two ends of the shell 1, when the current is suddenly increased to heat the memory spring 9 to reach the self thermal deformation temperature, the memory spring 9 deforms and extends and pushes the core shaft 2 to slide away from the conducting strip 6, so that the electric connection between the two conducting sleeves is disconnected, and the power supply is disconnected; when the current is reduced and the temperature is reduced to be lower than the thermal deformation temperature of the memory spring 9, the memory spring 9 recovers the initial length, the mandrel 2 recovers the initial state under the action of the thrust spring 3 to enable the two conductive sleeves to recover the electrical connection, and therefore the power supply is switched on.
Example 2
As shown in fig. 2, the outer end of the conductive sleeve 102 with a shorter length on the housing 1 is connected with a conductive patch 10 through a wire, a U-shaped card 11 is clamped at the outer edge of the conductive sleeve 101 with a longer length, and the U-shaped card 11 is connected with the outer end of the corresponding conductive sleeve 101 to form another conductive patch 10 for being soldered on a PCB. Other structures of this embodiment are the same as those of embodiment 1, and are not described again in this embodiment.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a relapse memory temperature electric current electrical apparatus protector, includes the shell, and the shell both ends are connected with terminal or electrically conductive paster, are equipped with memory spring and thrust spring, characterized by 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 respectively sleeving two conductive sleeves with different lengths on the insulating guide sleeve and connecting the conductive sleeves through insulating glue, the mandrel is in a stepped shaft shape, a small-diameter shaft section is inserted into the insulating guide sleeve in a sliding fit manner, and the memory spring is sleeved on the small-diameter shaft section of the mandrel and clamped between a shaft shoulder of the mandrel and the insulating guide sleeve; the thrust spring is clamped between the large head end of the mandrel and the inner bottom surface of the corresponding conductive sleeve;
in the initial state, the mandrel enables the two conductive sleeves to be electrically connected under the action of the thrust spring; when the memory spring reaches the set deformation temperature, the memory spring is heated to extend to push the mandrel to slide, so that the electrical connection of the two conductive sleeves is disconnected.
2. The protector for electric appliances with temperature and current memory function as claimed in claim 1, wherein: the memory spring and the thrust spring are arranged in the conductive sleeve with a long length, and the thermal deformation temperature of the memory spring is 75-155 ℃.
3. An electric appliance protector capable of memorizing temperature and current repeatedly as claimed in claim 1 or 2, wherein: and a conducting strip is arranged between one end of the small diameter of the mandrel in the insulating guide sleeve and the bottom of the inner hole of the corresponding conducting sleeve and used for improving the conducting performance.
4. An electric appliance protector capable of memorizing temperature and current repeatedly as claimed in claim 1 or 2, wherein: a spring seat is arranged between the thrust spring and the inner bottom surface of the corresponding conductive sleeve, so that the stability and the conductivity of the thrust spring are improved.
5. The protector for electric appliances with temperature and current memory function as claimed in claim 3, wherein: the insulating guide sleeve is made of ceramic materials.
6. An electric appliance protector capable of memorizing temperature and current repeatedly as claimed in claim 1 or 2, wherein: the memory spring is made of a titanium-nickel memory alloy material.
7. The protector for electric appliances with temperature and current memory function as claimed in claim 1, wherein: and the two ends of the shell are respectively welded with the binding posts.
8. The protector for electric appliances with temperature and current memory function as claimed in claim 1, wherein: the outer end of the conductive sleeve with the shorter length on the shell is connected with the conductive patch through a wire, the outer edge of the conductive sleeve with the longer length is clamped with a U-shaped card, and the U-shaped card forms another conductive patch at the outer end of the corresponding conductive sleeve for being installed on a circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051960.6A CN111128599A (en) | 2020-01-17 | 2020-01-17 | Electric appliance protector capable of repeatedly memorizing temperature and current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010051960.6A CN111128599A (en) | 2020-01-17 | 2020-01-17 | Electric appliance protector capable of repeatedly memorizing temperature and current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111128599A true CN111128599A (en) | 2020-05-08 |
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ID=70489633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010051960.6A Pending CN111128599A (en) | 2020-01-17 | 2020-01-17 | Electric appliance protector capable of repeatedly memorizing temperature and current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111128599A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198594A (en) * | 2021-03-24 | 2021-08-03 | 金玲玲 | Circuit protection mechanism for paper jam of office paper shredder |
-
2020
- 2020-01-17 CN CN202010051960.6A patent/CN111128599A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198594A (en) * | 2021-03-24 | 2021-08-03 | 金玲玲 | Circuit protection mechanism for paper jam of office paper shredder |
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