阅读说明：本技术 一种高通流量温度保险丝 (High-flux temperature fuse ) 是由 林绿波 许由生 戴玉龙 于 2021-09-17 设计创作，主要内容包括：本发明涉及过温保护元器件技术领域,尤其涉及一种高通流量温度保险丝。在现有结构的基础上,增设弹性件和空心套管,两个感温体分别设置在空心套管的两端且感温体分别与空心套管和引线端子焊接,两个引线端子通过空心套管实现电连接,当感温体被触发时,所述弹性件带动空心套管移动以使空心套管与弹性件所在的引线端子分离,实现快速切断。(The invention relates to the technical field of over-temperature protection components, in particular to a high-flux temperature fuse. On the basis of the existing structure, add elastic component and hollow sleeve pipe, two temperature sensing bodies set up respectively at hollow sheathed tube both ends and temperature sensing body respectively with hollow sleeve pipe and lead terminal welding, two lead terminals realize the electricity through hollow sleeve pipe and connect, when the temperature sensing integument triggered, elastic component drives hollow sleeve pipe and removes so that hollow sleeve pipe and elastic component place's lead terminal separation, realize cutting off fast.)

1. A high flux temperature fuse comprises a hollow pipe body and two lead terminals which are respectively arranged at two ends in the hollow pipe body, and is characterized by further comprising an elastic piece, a temperature sensing body and a hollow sleeve which are respectively arranged in the hollow pipe body, wherein the hollow sleeve is made of metal, opposite ends of the two lead terminals are respectively embedded into two ends of the hollow sleeve, the opposite ends of the two lead terminals are not in contact with each other, the two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and are respectively welded with the hollow sleeve and the lead terminals, the elastic piece is arranged on any lead terminal, and two ends of the elastic piece are respectively abutted against the lead terminal where the elastic piece is arranged and one end of the hollow sleeve, which is close to the lead terminal where the hollow sleeve is arranged;

when the temperature sensing body is not triggered, the elastic piece is in a compressed state; when the temperature sensing body is triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located.

2. The high-flux thermal fuse according to claim 1, wherein the elastic member is a compression spring, the compression spring is sleeved on any one of the lead terminals, an insulator is further disposed inside the hollow tube, the compression spring is in contact with one side surface of the insulator, and the other side surface of the insulator is in contact with one end surface of the hollow sleeve close to the lead terminal where the hollow sleeve is located.

3. A high flux temperature fuse according to claim 2 wherein said metal is copper or copper alloy.

4. The high-flux thermal fuse according to claim 1, wherein two lead terminals are coaxially disposed with the hollow sleeve and coincide with an axis of the hollow tube, and the hollow sleeve is in clearance fit with the lead terminals.

5. The high flux temperature fuse according to claim 1, wherein said temperature sensing body is a fusible alloy, said fusible alloy having a melting point in the range of 40 ℃ to 800 ℃.

6. The high flux thermal fuse according to claim 1, wherein said thermal sensitive body is in the shape of a collar, a paste, a filament or a sheet.

7. The high-flux thermal fuse according to claim 1, wherein the hollow tube body has openings at both ends thereof, the lead terminals pass through the openings to the outside, and the openings are filled with resin to close the openings.

8. The high-flux thermal fuse according to claim 7, wherein the middle portion of the lead terminal extends outward to form a limiting portion, the two ends of the hollow tube body have openings, the opening of one end of the hollow tube body away from the elastic member has a smaller diameter than the limiting portion, and the opening of one end of the hollow tube body close to the elastic member has a smaller diameter than the limiting portion.

9. The high-flux thermal fuse according to claim 8, further comprising a ring-shaped cover plate, wherein the cover plate is sleeved on the lead terminals and is located between the limiting portions of the lead terminals and the resin.

10. The high flux thermal fuse according to claim 9, wherein said cover plate is disposed on said lead terminal away from said elastic member.

11. The high flux temperature fuse according to claim 1, wherein said hollow tube is made of ceramic, plastic or glass, and said insulator is a plastic tube or a ceramic tube.

12. The high flux temperature fuse according to claim 1, wherein said hollow tube is adapted to a hollow sleeve, and the axial cross-sectional shape of said hollow tube is circular or square.

Technical Field

The invention relates to the technical field of over-temperature protection components, in particular to a high-flux temperature fuse.

Background

The alloy type temperature fuse is an over-temperature protection component, and when the electronic equipment to be protected generates heat due to abnormal faults and the temperature reaches the fusing temperature of the temperature fuse, the fuse can be fused, so that a circuit is cut off. The alloy type temperature fuse is mainly composed of fusible alloy, lead, casing and sealing resin. The existing alloy fuse uses the fusing assistant agent to help the shrinkage speed of the fusible alloy to be insufficient.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the high-flux temperature fuse is provided, and can cut off a circuit quickly when a fusible alloy is fused.

In order to solve the technical problems, the invention adopts the technical scheme that:

a high-flux temperature fuse comprises a hollow pipe body, two lead terminals, an elastic part, temperature sensing bodies and a hollow sleeve, wherein the two lead terminals are respectively arranged at two ends inside the hollow pipe body;

when the temperature sensing body is not triggered, the elastic piece is in a compressed state; when the temperature sensing body is triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located.

The invention has the beneficial effects that:

the high-flux temperature fuse is characterized in that an elastic piece and a hollow sleeve are additionally arranged on the basis of the existing structure, two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and are respectively welded with the hollow sleeve and a lead terminal, the two lead terminals are electrically connected through the hollow sleeve, and when the temperature sensing bodies are triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located, so that quick cutting is realized.

Drawings

FIG. 1 is a schematic structural diagram of a high flux thermal fuse according to the present invention when it is not triggered;

FIG. 2 is a schematic diagram of a high flux thermal fuse according to the present invention when activated;

FIG. 3 is an exploded view of a high flux temperature fuse of the present invention;

description of reference numerals:

1. a hollow tube body; 11. an opening; 2. a lead terminal; 21. a limiting part; 3. an elastic member; 4. a temperature sensing body; 5. a hollow sleeve; 6. an insulator; 7. a resin; 8. a plastic cover plate.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1-3, the high flux thermal fuse provided by the invention comprises a hollow tube body, two lead terminals respectively arranged at two ends inside the hollow tube body, and further comprises an elastic member, a temperature sensing body and a hollow sleeve respectively arranged inside the hollow tube body, wherein the hollow sleeve is made of metal, opposite ends of the two lead terminals are respectively embedded from two ends of the hollow sleeve, and opposite ends of the two lead terminals are not contacted, the two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and respectively welded with the hollow sleeve and the lead terminals, the elastic member is arranged on any lead terminal, and two ends of the elastic member are respectively abutted against the lead terminal where the elastic member is arranged and one end of the hollow sleeve close to the lead terminal where the hollow sleeve is arranged;

when the temperature sensing body is not triggered, the elastic piece is in a compressed state; when the temperature sensing body is triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located.

From the above description, the beneficial effects of the present invention are: the high-flux temperature fuse is characterized in that an elastic piece and a hollow sleeve are additionally arranged on the basis of the existing structure, two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and are respectively welded with the hollow sleeve and a lead terminal, the two lead terminals are electrically connected through the hollow sleeve, and when the temperature sensing bodies are triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located, so that quick cutting is realized.

Furthermore, the elastic part is a compression spring, the compression spring is sleeved on any lead terminal, an insulator is further arranged inside the hollow pipe body, the compression spring is in contact with one side face of the insulator, and the other side face of the insulator is in contact with one end face of the hollow sleeve close to the lead terminal where the hollow sleeve is located.

As is apparent from the above description, by providing the insulator, the compression spring is prevented from coming into direct contact with the hollow sleeve, so that the reliability of breaking the circuit is satisfied.

Further, the metal is copper or a copper alloy.

From the above description, it can be seen that the practical requirements can be met by the above structure.

Furthermore, the two lead terminals and the hollow sleeve are coaxially arranged and are coincided with the axis of the hollow pipe body, and the hollow sleeve is in clearance fit with the lead terminals.

As can be seen from the above description, the above structure facilitates the movement of the hollow sleeve to achieve the effect of rapid separation. After the temperature sensing body is melted, the hollow tube and the lead are in clearance fit, so that the insulating tube and the hollow tube can move to the other end very fast under the action of the compression spring, and a circuit can be cut off quickly. The fusible alloy with the structure is welded on the hollow tube and the lead wire, has small contact resistance, can be applied to a high-flux circuit, has high circuit cutting speed, can avoid arc discharge, and can be applied to a high-voltage direct-current circuit.

Further, the temperature sensing body is a fusible alloy, and the melting point range of the fusible alloy is 40-800 ℃. The shape of the temperature sensing body is in a shape of a lantern ring, a paste, a silk or a sheet.

Further, both ends of the hollow pipe body are provided with openings, the lead terminal penetrates through the openings to the outside, and the openings are filled with resin to close the openings.

As is apparent from the above description, with the above structure, port sealing is achieved.

Furthermore, the middle part of the lead terminal extends outwards to form a limiting part, openings are formed in two ends of the hollow pipe body, the caliber of the opening in one end, far away from the elastic part, of the hollow pipe body is smaller than that of the limiting part, and the caliber of the opening in one end, close to the elastic part, of the hollow pipe body is not smaller than that of the limiting part.

As can be seen from the above description, the lead terminal is prevented from shaking by performing the spacing by the above structure.

Furthermore, the lead wire terminal structure also comprises an annular cover plate, wherein the cover plate is sleeved on the lead terminal and is positioned between the limiting part of the lead terminal and the resin.

According to the above description, the cover plate is matched with the limiting part, the limiting is carried out from the longitudinal dimension and the transverse dimension, the limiting effect is better, and the temperature fuse is ensured to have good working performance. The cover plate is made of insulating materials such as plastics or ceramics, and plays an insulating role while limiting.

Furthermore, the cover plate is sleeved on the lead terminal far away from the elastic element.

As can be seen from the above description, the cover plate is provided only on the lead terminals at one end, which facilitates assembly. Through experiments, the cover plate is arranged on the lead terminal far away from the elastic piece, and the product performance is better.

Further, the hollow pipe body is made of ceramic, plastic or glass, and the insulator is a plastic pipe or a ceramic pipe.

From the above description, it can be seen that the practical requirements can be met by the above structure.

Further, the hollow pipe body is matched with the hollow sleeve, and the axial section of the hollow pipe body is circular or square.

From the above description, it can be seen that the practical requirements can be met by the above structure.

Referring to fig. 1-3, a first embodiment of the present invention is:

the invention provides a high-flux temperature fuse which comprises a hollow tube body 1 and two lead terminals 2 which are respectively arranged at two ends in the hollow tube body 1, wherein the hollow tube body is made of ceramic or plastic. The axial section of the hollow pipe body is round or square. Other shapes may of course be used as long as machining is as easy as possible. The hollow pipe body 1 is internally provided with an elastic part 3, a temperature sensing body 4 and a hollow sleeve 5, the hollow pipe body is matched with the hollow sleeve, and the two lead terminals are coaxially arranged with the hollow sleeve and are coincided with the axis of the hollow pipe body.

The middle part of lead terminal 2 outwards extends and forms spacing portion 21, the both ends of cavity body 1 have opening 11, the one end open-ended bore that the elastic component was kept away from to the cavity body is less than spacing portion, the one end open-ended bore that the cavity body is close to the elastic component is not less than spacing portion.

The hollow sleeve is made of metal, specifically copper or copper alloy or other alloy materials. The opposite ends of the two lead terminals are respectively embedded from the two ends of the hollow sleeve, and the opposite ends of the two lead terminals are not contacted, namely the sum of the lengths of the parts of the two lead terminals, which are embedded into the hollow sleeve, is smaller than the length of the hollow pipe body.

The two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and are respectively welded with the hollow sleeve and the lead terminals, the elastic piece is arranged on any lead terminal, and two ends of the elastic piece are respectively abutted against the lead terminal and one end of the hollow sleeve close to the lead terminal; further, the temperature sensing body is a fusible alloy, and the melting point range of the fusible alloy is 40-800 ℃. The shape of the temperature sensing body is in a shape of a lantern ring, a paste, a silk or a sheet.

When the temperature sensing body is not triggered, the elastic piece is in a compressed state; when the temperature sensing body is triggered, the elastic piece drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic piece is located.

In this embodiment, the elastic member is a compression spring, the compression spring is sleeved on any one of the lead terminals, the hollow pipe body 1 is further provided with an insulator 6 inside, the compression spring is in contact with one side surface of the insulator, and the other side surface of the insulator is in contact with one end surface of the hollow sleeve close to the lead terminal where the hollow sleeve is located. Wherein, the insulator is a ceramic tube or a plastic tube. Of course other insulating materials may be used.

When the temperature sensing body is triggered, the free end of the compression spring is moved to the outside of the lead terminal under the action of self elasticity, so that the hollow sleeve is separated from the lead terminal where the elastic element is positioned.

The hollow tube body has openings at both ends thereof, the lead terminal passes through the openings to the outside, and the openings are filled with resin 7 to close the openings.

The lead terminal 2 far away from the elastic element is sleeved with a plastic cover plate 8 with an annular structure, and the plastic cover plate 8 is arranged between the limiting part 21 of the lead terminal and the resin 7 to play a role in positioning the lead terminal.

The hollow sleeve is in clearance fit with the lead terminal. After the temperature sensing body is melted, the hollow sleeve and the lead are in clearance fit, so that the insulating tube and the hollow sleeve can move very fast to the other end under the action of the compression spring, and a circuit can be cut off quickly. The fusible alloy is welded on the hollow sleeve and the lead terminal, the contact resistance is small, the high-flux circuit can be applied to the high-flux circuit, the circuit can be quickly cut off, arcing can be avoided, and the high-voltage direct-current circuit can be applied.

In order to meet the clearance fit between the hollow sleeve and the lead terminal, the temperature sensing body is designed into a complete ring shape, the temperature sensing body is sleeved between the lead terminal and the hollow sleeve, the temperature sensing body can also be designed into a tin paste shape or a tin wire or a sheet shape, and then the heating device is utilized to wet and fill the clearance.

In summary, according to the high-flux temperature fuse provided by the invention, based on the existing structure, the elastic element and the hollow sleeve are additionally arranged, the two temperature sensing bodies are respectively arranged at two ends of the hollow sleeve and are respectively welded with the hollow sleeve and the lead terminals, the two lead terminals are electrically connected through the hollow sleeve, and when the temperature sensing bodies are triggered, the elastic element drives the hollow sleeve to move so as to separate the hollow sleeve from the lead terminal where the elastic element is located, so that rapid cutting is realized. After the temperature sensing body is melted, the hollow sleeve and the lead are in clearance fit, so that the insulating tube and the hollow sleeve can move very fast to the other end under the action of the compression spring, and a circuit can be cut off quickly. The fusible alloy is welded on the hollow sleeve and the lead terminal, the contact resistance is small, the high-flux circuit can be applied to the high-flux circuit, the circuit can be quickly cut off, arcing can be avoided, and the high-voltage direct-current circuit can be applied.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.