CN219123149U - Repeated memory temperature and current overcurrent self-recovery electric appliance protector - Google Patents
Repeated memory temperature and current overcurrent self-recovery electric appliance protector Download PDFInfo
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- CN219123149U CN219123149U CN202221201865.0U CN202221201865U CN219123149U CN 219123149 U CN219123149 U CN 219123149U CN 202221201865 U CN202221201865 U CN 202221201865U CN 219123149 U CN219123149 U CN 219123149U
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- guide sleeve
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- mandrel
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Abstract
The protector comprises a shell, wherein a memory spring, a thrust spring and a mandrel are arranged in the shell, the shell is formed by fixedly connecting an insulating guide sleeve and metal caps sleeved at two ends of the insulating guide sleeve, and the mandrel is inserted into a central hole of the insulating guide sleeve through sliding clearance fit; the memory spring is sleeved on the small-diameter shaft section of the mandrel, and the thrust spring is clamped between the mandrel and a metal cap positioned at one end of the insulating guide sleeve; a conductive pin is arranged in the metal cap at the other end of the insulation guide sleeve, and one end with a small diameter is inserted into the central hole of the insulation guide sleeve; the mandrel contacts with the conductive pin under the action of the thrust spring in the initial state, so that the metal caps at the two ends of the shell are electrically connected; when the memory spring reaches the set memory temperature, the memory spring stretches to push the mandrel to slide and separate from the conductive pin, so that the electric connection of the metal caps at the two ends of the shell is disconnected. The beneficial effects are that low in manufacturing cost, the dabber slides freely, and electrically conductive effectual, sensitivity is high.
Description
Technical Field
The utility model relates to a circuit protector, in particular to a self-recovery electric appliance protector capable of repeatedly memorizing temperature and overcurrent.
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.
Such a protector has the following problems:
1. two conductive sleeves with different lengths are respectively sleeved on the insulating guide sleeve and are connected through insulating glue to form a shell which is used as a main body, the two conductive sleeves are different in specification, the manufacturing cost is high, and the guide effect on a mandrel arranged in the conductive sleeves is poor;
2. and a conductive sheet is arranged between one end of the small diameter of the mandrel and the bottom of the inner hole of the corresponding conductive sleeve in the insulating guide sleeve, so that the resistance of the conductive sheet is high, the conductive effect is poor, and the installation is inconvenient.
Disclosure of Invention
The utility model aims to solve the technical problem of providing the protector for the electrical appliance, which has the advantages of low manufacturing cost, free sliding of the mandrel, good conductive effect and high sensitivity, and can repeatedly memorize temperature and automatically recover current.
The technical scheme of the utility model is as follows:
the utility model provides a repeated memory temperature, electric current overflow self-resuming electrical apparatus protector, includes the shell, is equipped with memory spring, thrust spring and dabber in the shell, characterized by: the shell is formed by fixedly connecting an insulating guide sleeve and metal caps sleeved at two ends of the insulating guide sleeve, the central hole of the insulating guide sleeve is stepped, and the mandrel is inserted into the central hole of the insulating guide sleeve in a sliding clearance fit manner; the memory spring is sleeved on the small-diameter shaft section of the mandrel, and the thrust spring is clamped between the mandrel and a metal cap positioned at one end of the insulating guide sleeve; a conductive pin is arranged in the metal cap at the other end of the insulation guide sleeve, and one end with a small diameter of the conductive pin is inserted into a central hole of the insulation guide sleeve;
in the initial state, the mandrel is contacted with the conductive pin under the action of the thrust spring, so that the metal caps at the two ends of the shell are electrically connected; when the memory spring reaches the set memory temperature, the memory spring stretches to push the mandrel to slide and separate from the conductive pin, so that the electric connection of the metal caps at the two ends of the shell is disconnected.
As a further preferable mode, the cross section of the shell is round, and the metal caps at the two ends of the shell are respectively fixed with the pin wires.
As a further preference, the housing is square in cross section to facilitate patch mounting.
As a further preferable mode, silver alloy sheets are respectively arranged at the opposite ends of the mandrel and the conductive pin, and are used for reducing resistance and improving conductivity.
As a further preferable mode, the insulating guide sleeve is made of a ceramic tube, a quartz glass tube or a high-temperature-resistant injection molding material.
As a further preferable mode, the memory spring is made of nickel-titanium memory alloy material, and the memory temperature of the memory spring is 75-245 degrees after being heated and deformed.
The beneficial effects of the utility model are as follows:
1. the shell is formed by fixedly connecting an insulating guide sleeve and metal caps sleeved at two ends of the insulating guide sleeve, the central hole of the insulating guide sleeve is stepped, and the mandrel is inserted into the central hole of the insulating guide sleeve in a sliding clearance fit manner; therefore, the manufacturing cost is low, the guiding effect on the mandrel is good, the mandrel can slide freely, and the work is stable and reliable.
2. Because the metal cap at the other end of the insulating guide sleeve is internally provided with the conductive pin, one small diameter end of the conductive pin is inserted into the central hole of the insulating guide sleeve; in the initial state, the mandrel is contacted with the conductive pin under the action of the thrust spring, so that the metal caps at the two ends of the shell are electrically connected; when the high current generates high temperature, the memory spring reaches the set deformation temperature, and the memory spring stretches to push the mandrel to slide and separate from the conductive pin, so that the metal caps at the two ends of the shell are disconnected and electrically connected, and the power supply is disconnected; the device is convenient to install, good in conductive effect and high in sensitivity; when the temperature is too high due to the excessive current, the electric equipment can be instantaneously disconnected, so that the electric equipment is protected; when the current is reduced and the temperature is reduced below the thermal deformation temperature of the memory spring, the initial length is restored through the memory spring, so that the mandrel is restored to an initial state under the action of the thrust spring, and the power supply can be connected; can be repeatedly used for a long time, and has long service life.
Drawings
Fig. 1 is a schematic structural view 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 view of embodiment 2 of the present utility model.
In the figure: a shell 1, an insulating guide sleeve 101, a metal cap 102, a pin wire 2, a thrust spring 3, a mandrel 4, a memory spring 5, a conductive pin 6, a silver alloy sheet 7,
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1 and 2, the utility model relates to a protector for a self-recovery appliance with repeated memory of temperature and current overflow, which comprises a shell 1, wherein a memory spring 5, a mandrel 4 and a thrust spring 3 are sequentially arranged in the shell 1. The shell 1 is formed by fixedly connecting an insulating guide sleeve 101 and metal caps 102 fixedly sleeved at two ends of the insulating guide sleeve 101, the cross section of the shell 1 is circular, and pin wires 2 are respectively fixed on the metal caps at two ends of the shell 1.
The insulation guide sleeve 101 is made of a ceramic tube, a quartz glass tube or a high-temperature-resistant injection molding material, the central hole of the insulation guide sleeve 101 is stepped, and the outer edge of the mandrel 4 is stepped and is inserted into the central hole of the insulation guide sleeve 101 through sliding clearance fit.
The memory spring 5 is sleeved on the small-diameter shaft section of the mandrel 4 and clamped between the shoulder of the mandrel 4 and the step clamping edge of the central hole of the insulation guide sleeve 101, and the thrust spring 3 is clamped between the mandrel 4 and the inner bottom surface of the metal cap 102 positioned at one end of the insulation guide sleeve 101. A T-shaped conductive pin 6 is arranged in the metal cap 102 at the other end of the insulation guide sleeve, the big end of the conductive pin 6 is contacted with the inner bottom surface of the corresponding metal cap 102, and one small-diameter end of the conductive pin 6 is inserted into the central hole of the insulation guide sleeve 101 through clearance fit.
Silver alloy sheets 7 are respectively fixed at opposite ends of the mandrel 4 and the conductive pins 6 and used for reducing resistance and improving conductivity. The memory spring 5 is made of a titanium-nickel memory alloy material, and the thermal deformation temperature of the memory spring 5 is 75-245 degrees. The thrust spring 3 is a stainless steel spring.
In the initial state, the mandrel 4 is contacted with the conductive pin 6 under the action of the thrust spring 3, so that the metal caps at the two ends of the shell 1 are electrically connected with the conductive pin 6 through the thrust spring, the mandrel 4; when the memory spring 5 is heated to reach the set memory temperature, the memory spring 5 stretches to push the mandrel 4 to slide to be separated from the conductive pin 6, so that the electric connection of the metal caps 102 at the two ends of the shell 1 is disconnected.
When the electric appliance protector is used, the repeated memory temperature and current overcurrent self-recovery electric appliance protector is connected between a power supply and a load through the pin wires 2 at the two ends of the shell 1, and when the current suddenly increases to enable the memory spring 5 to be heated to reach the memory deformation temperature of the memory spring 5, the memory spring 5 deforms and stretches and pushes the mandrel 4 to slide and separate from the conductive pin 6, so that the electric connection of the pin wires at the two ends of the shell is disconnected, and the load power supply is disconnected. When the current is reduced and the temperature is reduced below the thermal deformation temperature of the memory spring 5, the memory spring 5 contracts to restore the initial length, and the mandrel 4 restores the initial state under the action of the thrust spring 3, so that the metal caps 102 at the two ends of the shell 1 restore the electrical connection, and the power supply is connected.
Example 2
As shown in fig. 3, the protector for the electrical appliance with repeated memory of temperature and overcurrent self-recovery comprises a shell 1, wherein the cross section of the shell 1 is square, so that the patch type installation is realized. Other structures of this embodiment are the same as those of embodiment 1, and the description of this embodiment is omitted.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The utility model provides a repeated memory temperature, electric current overflow self-resuming electrical apparatus protector, includes the shell, is equipped with memory spring, thrust spring and dabber in the shell, characterized by: the shell is formed by fixedly connecting an insulating guide sleeve and metal caps sleeved at two ends of the insulating guide sleeve, the central hole of the insulating guide sleeve is stepped, and the mandrel is inserted into the central hole of the insulating guide sleeve in a sliding clearance fit manner; the memory spring is sleeved on the small-diameter shaft section of the mandrel, and the thrust spring is clamped between the mandrel and a metal cap positioned at one end of the insulating guide sleeve; a conductive pin is arranged in the metal cap at the other end of the insulation guide sleeve, and one end with a small diameter of the conductive pin is inserted into a central hole of the insulation guide sleeve;
in the initial state, the mandrel is contacted with the conductive pin under the action of the thrust spring, so that the metal caps at the two ends of the shell are electrically connected; when the memory spring reaches the set memory temperature, the memory spring stretches to push the mandrel to slide and separate from the conductive pin, so that the electric connection of the metal caps at the two ends of the shell is disconnected.
2. The protector for electrical appliance with repeated memory of temperature and overcurrent self-recovery function according to claim 1, wherein the protector is characterized in that: the cross section of the shell is circular, and the metal caps at the two ends of the shell are respectively fixed with a pin wire.
3. The protector for electrical appliance with repeated memory of temperature and overcurrent self-recovery function according to claim 1, wherein the protector is characterized in that: the cross section of the shell is square so as to realize patch type installation.
4. A protector for an electrical appliance with repeated memory of temperature and overcurrent self-recovery according to any one of claims 1 to 3, characterized in that: silver alloy sheets are respectively arranged at the opposite ends of the mandrel and the conductive pins and used for reducing resistance and improving conductivity.
5. A protector for an electrical appliance with repeated memory of temperature and overcurrent self-recovery according to any one of claims 1 to 3, characterized in that: the insulating guide sleeve is made of a ceramic tube, a quartz glass tube or a high-temperature-resistant injection molding material.
6. A protector for an electrical appliance with repeated memory of temperature and overcurrent self-recovery according to any one of claims 1 to 3, characterized in that: the memory spring is made of nickel-titanium memory alloy material, and the memory temperature of the memory spring is 75-245 ℃ after being heated and deformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221201865.0U CN219123149U (en) | 2022-05-19 | 2022-05-19 | Repeated memory temperature and current overcurrent self-recovery electric appliance protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221201865.0U CN219123149U (en) | 2022-05-19 | 2022-05-19 | Repeated memory temperature and current overcurrent self-recovery electric appliance protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219123149U true CN219123149U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221201865.0U Active CN219123149U (en) | 2022-05-19 | 2022-05-19 | Repeated memory temperature and current overcurrent self-recovery electric appliance protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219123149U (en) |
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2022
- 2022-05-19 CN CN202221201865.0U patent/CN219123149U/en active Active
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