CN115172100A - Large-current high-voltage temperature fuse capable of being rapidly fused - Google Patents
Large-current high-voltage temperature fuse capable of being rapidly fused Download PDFInfo
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- CN115172100A CN115172100A CN202210664558.4A CN202210664558A CN115172100A CN 115172100 A CN115172100 A CN 115172100A CN 202210664558 A CN202210664558 A CN 202210664558A CN 115172100 A CN115172100 A CN 115172100A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
Abstract
The invention relates to the technical field of temperature fuses, in particular to a high-current high-voltage temperature fuse capable of being quickly fused. On the basis of a traditional temperature fuse, an elastic component and an insulating spacer sleeve are additionally arranged and are mutually connected and matched, and when the electric connector is triggered, the elastic component drives the insulating spacer sleeve to be arranged between a first lead and a second lead. Namely, the electric connector between the two wires is quickly pushed away under the thrust of the elastic component, and the conduction between the two wires is quickly cut off. Because of the physical partition of the insulating spacer sleeve, the electrical gap between the two wires is effectively improved, so that the product still can achieve higher rated voltage under smaller volume, and the safe fusing capability of the product current and high voltage is greatly improved.
Description
Technical Field
The invention relates to the technical field of temperature fuses, in particular to a high-current high-voltage temperature fuse capable of being quickly fused.
Background
The temperature fuse is an overtemperature protection component, and when abnormal fault heating occurs to the protected electronic equipment and the temperature reaches the fusing temperature of the temperature fuse, the fuse can be fused, so that a circuit is cut off.
At present, most of temperature fuses rely on the surface tension of low-melting-point alloy and the acting force of a fluxing agent to disconnect a temperature sensing body, the fusing speed is low, the fusing speed is limited by the diameter and the length of the temperature sensing body, large current and high voltage are difficult to achieve, and particularly the direct current on-off capacity is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a high current, high voltage, temperature fuse is provided that can be blown quickly.
In order to solve the technical problems, the invention adopts the technical scheme that:
a high-current high-voltage temperature fuse capable of being fused quickly comprises a first wire, a second wire, an electric connecting piece, an elastic component and an insulating spacer bush, wherein the electric connecting piece is arranged between the first wire and the second wire, the first wire is electrically connected with the second wire through the electric connecting piece, the elastic component is connected with the insulating spacer bush, and the elastic component drives the insulating spacer bush to be arranged between the first wire and the second wire when the electric connecting piece is triggered.
The invention has the beneficial effects that:
according to the high-current high-voltage temperature fuse capable of being fused rapidly, the elastic component and the insulating spacer sleeve are additionally arranged on the basis of a traditional temperature fuse and are connected and matched with each other, and when the electric connector is triggered, the elastic component drives the insulating spacer sleeve to be arranged between the first lead and the second lead. Namely, the electric connector between the two wires is quickly pushed away under the thrust of the elastic component, and the conduction between the two wires is quickly cut off. Because of the physical partition of the insulating spacer sleeve, the electrical clearance between the two wires is effectively improved, so that the product still can achieve higher rated voltage under smaller volume, and the safe fusing capability of the product current and high voltage is greatly improved.
Drawings
FIG. 1a is a schematic diagram of a first conductive line and a second conductive line of a fast fusible high-current high-voltage temperature fuse according to the present invention;
FIG. 1b is a schematic diagram of the first and second wires of the fast fusible high-current high-voltage temperature fuse according to the present invention;
FIG. 2 is a perspective exploded view of a first embodiment of the present invention;
FIG. 3 is a cross-sectional view of a first embodiment of the present invention;
FIG. 4 is a cross-sectional view of a first embodiment of the present invention;
FIG. 5a is a cross-sectional view of the electrical connection when the electrical connector is a second temperature sensing body in accordance with one embodiment of the present invention;
FIG. 5b is a cross-sectional view of a second thermistor as an electrical connector according to a first embodiment of the invention;
FIG. 6a is a cross-sectional view of an electrical connection when the electrical connector is a bimetallic strip in accordance with a first embodiment of the present invention;
FIG. 6b is a cross-sectional view of the electrical connection being broken when the electrical connector is a bimetallic strip in accordance with one embodiment of the present invention;
fig. 7 is a perspective exploded view of a second embodiment of the present invention;
FIG. 8 is a cross-sectional view of a second embodiment of the present invention;
FIG. 9 is a cross-sectional view of a second embodiment of the present invention;
fig. 10 is a perspective exploded view of a third embodiment of the present invention;
FIG. 11 is a cross-sectional view of a third embodiment of the present invention;
FIG. 12 is a cross-sectional view of a third embodiment of the present invention;
fig. 13 is a perspective exploded view of a fourth embodiment of the present invention;
FIG. 14 is a cross-sectional view of a fourth embodiment of the present invention;
FIG. 15 is a cross-sectional view of a fourth embodiment of the present invention;
description of reference numerals:
1. a strip-shaped housing; 2. an end cap; 3. a first conductive line; 4. a second conductive line; 5. a spring; 6. a first temperature-sensing body; 7. an insulating spacer sleeve; 8. a resin; 9. an upper housing; 10. a lower housing; 11. a metal spring arm; 12. a second temperature sensing body; 13. a contact; 14. an electrical connection.
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. 1a, fig. 1b, fig. 2 to fig. 4, fig. 5a, fig. 5b, fig. 6a, fig. 6b, and fig. 7 to fig. 15, the present invention provides a high-current high-voltage temperature fuse capable of being fused rapidly, which includes a first wire, a second wire, and an electrical connector, wherein the electrical connector is disposed between the first wire and the second wire, and the first wire is electrically connected to the second wire through the electrical connector, and further includes an elastic member and an insulating spacer, wherein the elastic member is connected to the insulating spacer, and when the electrical connector is triggered, the elastic member drives the insulating spacer to be disposed between the first wire and the second wire.
As can be seen from the above description, the beneficial effects of the present invention are:
according to the high-current high-voltage temperature fuse capable of being fused rapidly, the elastic component and the insulating spacer sleeve are additionally arranged on the basis of a traditional temperature fuse and are connected and matched with each other, and when the electric connector is triggered, the elastic component drives the insulating spacer sleeve to be arranged between the first lead and the second lead. Namely, the electric connector between the two wires is quickly pushed away under the thrust of the elastic component, and the conduction between the two wires is quickly cut off. Because of the physical partition of the insulating spacer sleeve, the electrical gap between the two wires is effectively improved, so that the product still can achieve higher rated voltage under smaller volume, and the safe fusing capability of the product current and high voltage is greatly improved.
Furthermore, the electric connector is a first temperature-sensing body, the first lead is welded with the second lead through the first temperature-sensing body, the insulating spacer is sleeved on the first lead, the elastic member acts on the first lead and the insulating spacer, and when the first temperature-sensing body is melted, the elastic member drives the insulating spacer to be arranged between the first lead and the second lead.
As can be seen from the above description, because the first temperature sensing body is only used as the solder between the two wires, the resistance is small, the consumption of the temperature sensing body is less than that of the traditional fuse product, and the current capacity of the fuse product is far larger than that of the traditional fuse product using the first temperature sensing body as the current carrier.
Furthermore, the middle part of the first lead is provided with a leaning part, the elastic component is a spring, and the inner side wall of one end part of the insulating spacer sleeve is provided with a step groove;
the spring sleeve is arranged on the first wire, one end of the spring is abutted to the abutting portion, and the other end of the spring is abutted to the bottom surface of the stepped groove.
According to the structure, the spring is in a compression state under the normal condition, when the first temperature sensing body is fused, the spring pushes the insulating spacer bush to move towards one end far away from the abutting part under the action of elasticity, and then the insulating spacer bush is arranged between the first lead and the second lead, so that physical separation is realized.
Furthermore, another tip lateral wall of insulating spacer forms the groove of stepping down, second wire middle part is equipped with the kink so that the second wire divide into first portion and second portion, the second portion and the coaxial setting of first wire of second wire, the first portion of second wire with the groove of stepping down cooperatees.
According to the above description, through the above structural design, the second portion of the second wire and the end of the first wire far away from the second wire are used as two electrical connection ends, and due to the arrangement of the bending portion, the second portion of the second wire and the first wire are maintained to be coaxially arranged, and the first portion of the second wire is matched with the abdicating groove, so that the thickness of the product can be reduced.
Furthermore, the electric connector is a metal elastic part, the first lead is electrically connected with the second lead through the metal elastic part, and when the metal elastic part deforms, the elastic component drives the insulating spacer bush to be arranged between the first lead and the second lead.
From the above description, it can be seen that the metal elastic element can be used as the electrical connecting element in the present solution, and the claimed technical effects can also be achieved.
Furthermore, the first lead and the second lead are arranged non-coaxially, the metal elastic part comprises a metal elastic arm and a second temperature sensing body, one end of the metal elastic arm is electrically connected with the first lead, the other end of the metal elastic arm is welded with the second lead through the second temperature sensing body, the elastic component is a spring, and a groove is formed in the inner side wall of one end part of the insulating spacer sleeve;
one end of the spring is abutted against the abutting part of the external device, the other end of the spring is abutted against the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted against the middle part of the metal elastic arm and is close to the second temperature sensing body.
As can be seen from the above description, the metal elastic arm and the temperature-sensing body are specifically used, and the claimed technical effect is achieved through the connection and matching manner. The metal elastic arm can be a common metal elastic sheet or a bimetallic strip.
Furthermore, the first lead and the second lead are arranged in a non-coaxial manner, the metal elastic part comprises a metal elastic arm and a contact, the metal elastic arm is a bimetallic strip, one end of the metal elastic arm is electrically connected with the first lead, the other end of the metal elastic arm is provided with the contact, the contact is electrically connected with the second lead in a contact manner, the elastic member is a spring, and a groove is formed in the inner side wall of one end part of the insulating spacer sleeve;
one end of the spring is abutted against the abutting part of the peripheral equipment, the other end of the spring is abutted against the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted against the middle part of the metal elastic arm and is close to the contact.
As can be seen from the above description, the above-mentioned bimetallic strip can also be used in the form of a mating contact to achieve the claimed technical effect.
Further, still include the shell, heavy current high voltage temperature fuse locates in the shell, the portion of leaning on of peripheral hardware is the shell internal surface.
Furthermore, another tip lateral wall of insulating spacer forms the groove of stepping down, second wire middle part is equipped with the kink so that the second wire divide into first portion and second portion, the second portion and the coaxial setting of spring center pin of second wire, the first portion of second wire with the groove of stepping down cooperatees.
As can be seen from the above description, the provision of the bending portion enables the second conductive wire, which is originally eccentric, to be disposed coaxially with the central axis of the spring, which is beneficial to force balance.
Further, still include that one end has open-ended bar casing and lid and locates the end cover of bar casing opening part, the bar casing other end has the first through-hole that supplies first wire to pass, have the second through-hole that supplies the second wire to pass on the end cover, first through-hole department and second through-hole department all set up resin so that bar casing and end cover form airtight cavity jointly.
According to the description, through the structural design, the strip-shaped shell and the end cover form the closed cavity, and the two leads respectively penetrate out of the two opposite ends of the closed cavity to form the temperature fuse of which the electric connection ends are positioned at the two ends.
Further, still close last casing and the lower casing that sets up including covering each other, casing one end has the first through-hole that supplies first wire to pass down, the casing other end has the second through-hole that supplies the second wire to pass down, first through-hole department and second through-hole department all set up resin so that last casing and casing form airtight cavity jointly down.
According to the above description, through the above structural design, the upper shell and the lower shell form a closed cavity, and the two wires respectively penetrate out from the two opposite ends of the closed cavity to form the temperature fuses of which the electric connection ends are located at the two ends.
Further, still include that one end has open-ended bar casing and lid and locates the end cover of bar casing opening part, have the first through-hole that supplies first wire to pass and the second through-hole that supplies the second wire to pass on the end cover, first through-hole department and second through-hole department all set up resin so that bar casing and end cover form airtight cavity jointly.
According to the above description, through the above structural design, the sealed cavity is composed of the strip-shaped shell and the end cover, and the two wires penetrate out from the same side of the sealed cavity to form the two temperature fuses with the electric connection ends located at the same side.
Furthermore, the inner side wall of the other end of the strip-shaped shell is provided with a limit groove matched with the width of the other end of the insulating spacer bush.
As can be seen from the above description, the limiting groove is arranged to ensure that the insulating spacer can be kept between the first lead and the second lead when the temperature fuse is triggered, thereby improving the physical isolation effect.
Further, still close last casing and the lower casing that sets up including covering each other, casing one end has the first through-hole that supplies first wire to pass and the second through-hole that supplies the second wire to pass down, first through-hole department and second through-hole department all set up resin so that last casing and casing form airtight cavity jointly down.
According to the above description, through the above structural design, the upper shell and the lower shell form a sealed cavity, and the two wires penetrate out from the same side of the sealed cavity to form two temperature fuses with the electric connection ends located on the same side.
Furthermore, a limiting groove matched with the width of the other end of the insulating spacer bush is arranged on the inner side wall of one end, far away from the first through hole, of the closed cavity.
As can be seen from the above description, the limiting groove is arranged to ensure that the insulating spacer can be kept between the first lead and the second lead when the temperature fuse is triggered, thereby improving the physical isolation effect.
Referring to fig. 1a, fig. 1b, fig. 5a, fig. 5b, fig. 6a, fig. 6b and fig. 2 to fig. 4, a first embodiment of the present invention is:
referring to fig. 1, the present invention provides a high current, high voltage and temperature fuse capable of being fused rapidly, which has a sealed cavity, the sealed cavity includes a bar-shaped housing 1 with an opening at one end and an end cap 2 covering the opening of the bar-shaped housing, the bar-shaped housing can be round, square or other shapes; the strip-shaped shell and the end cover belong to an axial combination mode, and the bonding mode of the strip-shaped shell and the end cover is various and comprises welding, gluing or buckling and the like. The other end of the bar-shaped shell is provided with a first through hole for a first lead to pass through, the end cover is provided with a second through hole for a second lead to pass through, and the first through hole and the second through hole are both provided with resin 8 so that the bar-shaped shell and the end cover jointly form a closed cavity.
A first lead 3, a second lead 4, an electric connector 14, an elastic component and an insulating spacer 7 are arranged in the sealed cavity; the elastic component is a spring 5, the electric connecting piece 14 is arranged between the first conducting wire 3 and the second conducting wire 4, the first conducting wire is electrically connected with the second conducting wire through the electric connecting piece, when the electric connecting piece is in a first state, the first conducting wire is electrically connected with the second conducting wire, and when the electric connecting piece is in a second state, the first conducting wire is disconnected with the second conducting wire.
In this embodiment, the electrical connector has the following two implementation manners, specifically:
the first method comprises the following steps: the electric connector is a first temperature sensing body 6, the first lead 3 is welded with the second lead 4 through the first temperature sensing body 6, the insulating spacer 7 is sleeved on the first lead 3, the elastic component acts on the first lead 3 and the insulating spacer 7, and when the first temperature sensing body 6 is melted, the elastic component drives the insulating spacer to be arranged between the first lead and the second lead.
The middle part of the first lead 3 is provided with a leaning part, the width of the leaning part is larger than the aperture of the first through hole so that the first lead cannot be separated from the first through hole, the spring is sleeved on the first lead, one end of the spring is in leaning connection with the leaning part, the insulating spacer sleeve is sleeved on the first lead, and the inner side wall of one end part of the insulating spacer sleeve is provided with a step groove; the other end of the spring is abutted against the inner bottom surface of the stepped groove. The spring acts on the first conductive wire and the insulating spacer and urges the insulating spacer to be disposed between the first conductive wire and the second conductive wire when the electrical connector is activated. Wherein, the electrical connector is triggered, that is, the electrical connector is in the second state. The maximum width of the insulating spacer is matched with the inner diameter of the closed cavity.
In this embodiment, another tip lateral wall of insulating spacer forms the groove of stepping down, the second wire middle part is equipped with the kink so that the second wire divide into first portion and second portion, the second portion and the coaxial setting of first wire of second wire, the first portion of second wire with the groove of stepping down cooperatees.
As shown in fig. 3, when the fuse operates normally, the circuit is in a conducting state. The circuit is connected and conducted through the first lead, the first temperature sensing body and the second lead, and the spring is in a compressed state at the moment.
As shown in fig. 4, after the fuse is blown, the circuit is in an open state. When the temperature of the protected object exceeds the melting temperature of the first temperature sensing body, the first temperature sensing body melts, the spring pushes the insulating spacer to move towards one end far away from the first lead (namely, the right side in the figure), the insulating spacer in the circuit is positioned between the first lead and the second lead, the first lead and the second lead cannot be communicated, and at the moment, the related circuit is in an off state.
And the second method comprises the following steps: the electric connecting piece is a metal elastic piece, the first conducting wire is electrically connected with the second conducting wire through the metal elastic piece, and when the metal elastic piece deforms, the elastic component drives the insulating spacer bush to be arranged between the first conducting wire and the second conducting wire. The method specifically comprises the following steps:
the first conducting wire and the second conducting wire are arranged non-coaxially, namely, are arranged in a staggered manner from top to bottom; the metal elastic part comprises a metal elastic arm 11 and a second temperature sensing body 12, one end of the metal elastic arm is fixed and electrically connected with the first lead, the other end of the metal elastic arm is welded with the second lead through the second temperature sensing body, the elastic component is a spring, and a groove is formed in the inner side wall of one end part of the insulating spacer sleeve; wherein, the recess size and the size adaptation of spring can.
One end of the spring is abutted to the abutting portion of the peripheral, the other end of the spring is abutted to the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted to the middle of the metal elastic arm and is close to the second temperature sensing body. As shown in fig. 5a and 5 b.
In another embodiment, the metal elastic member may be further in the following embodiments: the insulation spacer comprises a metal elastic arm 11 and a contact 13, wherein the metal elastic arm 11 is a bimetallic strip, one end of the metal elastic arm 11 is fixed and electrically connected with a first lead, the contact 13 is arranged at the other end of the metal elastic arm 11, the contact 13 is electrically connected with a second lead in a contact manner, the elastic component is a spring, and a groove is formed in the inner side wall of one end part of the insulation spacer;
one end of the spring is abutted against the abutting part of the peripheral equipment, the other end of the spring is abutted against the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted against the middle part of the metal elastic arm and is close to the contact. As shown in fig. 6a and 6 b.
The high-current high-voltage temperature fuse is arranged in a shell, and the supporting part of the peripheral equipment is the inner surface of the shell, in particular to the side wall opposite to the side wall where the second lead outlet end is located.
In this embodiment, another tip lateral wall of insulating spacer forms the groove of stepping down, the second wire middle part is equipped with the kink so that the second wire divide into first portion and second portion, the second portion of second wire and the coaxial setting of spring center pin, the first portion of second wire with the groove of stepping down cooperatees.
It should be noted that: the specific position of the external abutting part is related to the position of the second lead, the problem of motion track balance of the insulating spacer sleeve is mainly considered, because in the first implementation mode (the first temperature-sensing body scheme), the insulating spacer sleeve is sleeved on the first lead, the motion track of the insulating spacer sleeve is limited by the first lead, and in the second implementation mode (the metal elastic part scheme), the insulating spacer sleeve is different, the original eccentric second lead and the spring center shaft are coaxially arranged, so that the stress direction of the insulating spacer sleeve in the motion process is favorably prevented from deviating, and the declared technical effect of the scheme is ensured to be achieved.
As shown in fig. 5a and 6a, when the fuse operates normally, the circuit is in a conducting state. The circuit is connected and conducted through the first lead, the metal elastic piece and the second lead, the spring is in a compressed state, and one end, far away from the spring, of the insulating spacer bush is abutted to the metal elastic arm.
As shown in fig. 5b and 6b, after the fuse is blown, the circuit is in an open state. As shown in fig. 5b, when the temperature of the protected object exceeds the melting temperature of the first temperature sensing body, the second temperature sensing body melts, the metal elastic arm resets (i.e. moves upwards in the figure), the spring pushes the insulating spacer sleeve to move towards the end far away from the first conducting wire (i.e. the right side in the figure), it can be seen from the figure that the insulating spacer sleeve in the circuit is located between the first conducting wire and the second conducting wire, so that the two conducting wires cannot be connected, and the related circuit is in an open state at this time. As shown in fig. 6b, when the temperature of the protected object exceeds the deformation temperature of the bimetal, the metal elastic arm is reset (i.e. moves upwards in the figure), the contact is electrically disconnected from the second conducting wire, and the spring pushes the insulating spacer to be positioned between the first conducting wire and the second conducting wire.
Referring to fig. 7 to 9, a second embodiment of the present invention is:
the difference from the first embodiment is that the implementation manner of the closed cavity is different, in this embodiment, the closed cavity is composed of an upper shell and a lower shell, and specifically, the closed cavity is as follows:
as shown in fig. 7, the sealed cavity includes an upper shell 9 and a lower shell 10 which are covered with each other, one end of the lower shell has a first through hole for the first wire to pass through, the other end of the lower shell has a second through hole for the second wire to pass through, and the first through hole and the second through hole are both provided with resin so that the upper shell and the lower shell form the sealed cavity together.
The embodiment can select whether to use epoxy resin to seal the two ends of the closed cavity. The upper shell and the lower shell belong to a longitudinal combination mode, and the bonding mode is various and comprises but not limited to welding, gluing or buckling and the like.
The upper shell and the lower shell form a closed cavity, and the two leads respectively penetrate out of two opposite ends of the closed cavity to form the temperature fuses of which the electric connection ends are positioned at two ends of each other.
As shown in fig. 8, when the fuse operates normally, the circuit is in a conducting state. The circuit is connected and conducted through the first lead, the first temperature sensing body and the second lead, and the spring is in a compressed state.
As shown in fig. 9, after the fuse is blown, the circuit is in an open state. When the temperature of the protected object exceeds the melting temperature of the first temperature sensing body, the first temperature sensing body melts, the spring pushes the insulating spacer bush to move towards one end far away from the first lead (namely, the right side in the figure), and the insulating spacer bush in the circuit is positioned between the first lead and the second lead, so that the first lead and the second lead cannot be connected, and the related circuit is in a disconnected state at the moment.
Referring to fig. 10 to 12, a third embodiment of the present invention is:
as shown in fig. 10, the difference from the first embodiment is that the two electrical terminals are implemented differently, in this embodiment, the two electrical terminals are located on the same side of the thermal fuse, specifically:
the closed cavity comprises a bar-shaped shell with an opening at one end and an end cover arranged at the opening of the bar-shaped shell, wherein a first through hole for a first wire to pass through and a second through hole for a second wire to pass through are formed in the end cover, and resin is arranged at the first through hole and the second through hole so that the bar-shaped shell and the end cover jointly form the closed cavity. And a limiting groove matched with the width of the other end part of the insulating spacer bush is formed in the inner side wall of the other end of the strip-shaped shell.
Through the structural design, the sealed cavity is formed by the strip-shaped shell and the end cover, and the two leads penetrate out from the same side of the sealed cavity to form two temperature fuses with the electric connection ends positioned on the same side. Set up the spacing groove to ensure when temperature fuse is triggered, insulating spacer can keep between first wire and second wire, promote the physical isolation effect.
As shown in fig. 11, when the fuse operates normally, the circuit is in a conducting state. The circuit is connected and conducted through the first lead, the first temperature sensing body and the second lead, and the spring is in a compressed state.
As shown in fig. 12, after the fuse is blown, the circuit is in an open state. When the temperature of the protected object exceeds the melting temperature of the first temperature sensing body, the first temperature sensing body melts, the spring pushes the insulating spacer bush to move towards one end away from the first lead abutting part (namely, the right side in the figure), the insulating spacer bush in the circuit is positioned between the first lead and the second lead, the first lead and the second lead cannot be communicated, and at the moment, the related circuit is in an off state.
Referring to fig. 13 to 15, a fourth embodiment of the invention is:
as shown in fig. 13, the difference from the first embodiment is that the implementation manner of the two electrical terminals and the implementation manner of the sealed cavity are different, in this embodiment, the two electrical terminals are located on the same side of the temperature fuse, specifically:
the closed cavity comprises an upper shell and a lower shell which are mutually covered, one end of the lower shell is provided with a first through hole for a first lead to pass through and a second through hole for a second lead to pass through, and the first through hole and the second through hole are respectively provided with resin so that the upper shell and the lower shell jointly form the closed cavity. And a limiting groove matched with the width of the other end part of the insulating spacer bush is arranged on the inner side wall of one end, far away from the first through hole, of the closed cavity.
Through the structural design, the upper shell and the lower shell form a closed cavity, and the two leads penetrate out from the same side of the closed cavity to form two temperature fuses with the electric connection ends positioned on the same side. Set up the spacing groove to ensure when temperature fuse is triggered, insulating spacer can keep between first wire and second wire, promote the physical isolation effect.
Referring to fig. 14, when the fuse is operating normally, the circuit is in a conducting state. The circuit is connected and conducted through the first lead, the first temperature sensing body and the second lead, and the spring is in a compressed state at the moment.
As shown in fig. 15, after the fuse is blown, the circuit is in an open state. When the temperature of the protected object exceeds the melting temperature of the first temperature sensing body, the first temperature sensing body melts, the spring pushes the insulating spacer bush to move towards one end (namely the right side in the figure) far away from the first lead abutting part, the insulating spacer bush in the circuit is positioned between the first lead and the second lead, the first lead and the second lead cannot be communicated, and at the moment, the related circuit is in a disconnected state.
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.
Claims (15)
1. The high-current high-voltage temperature fuse capable of being fused rapidly comprises a first wire, a second wire and an electric connecting piece, wherein the electric connecting piece is arranged between the first wire and the second wire, the first wire is electrically connected with the second wire through the electric connecting piece, the high-current high-voltage temperature fuse is characterized by further comprising an elastic component and an insulating spacer bush, the elastic component is connected with the insulating spacer bush, and when the electric connecting piece is triggered, the elastic component drives the insulating spacer bush to be arranged between the first wire and the second wire.
2. A fast fusing high current high voltage thermal fuse as claimed in claim 1 wherein said electrical connector is a first temperature sensing body, said first conductive wire is welded to a second conductive wire through said first temperature sensing body, said insulating spacer is sleeved on said first conductive wire, said elastic member acts on said first conductive wire and said insulating spacer, said elastic member drives said insulating spacer to be disposed between said first conductive wire and said second conductive wire when said first temperature sensing body melts.
3. A fast fusing large current high voltage temperature fuse as claimed in claim 2, wherein the first wire has a leaning part in the middle, the elastic member is a spring, and a stepped groove is formed on the inner side wall of one end of the insulating spacer;
the spring sleeve is arranged on the first wire, one end of the spring is abutted to the abutting portion, and the other end of the spring is abutted to the bottom surface of the stepped groove.
4. The high-current high-voltage temperature fuse capable of being fused rapidly as claimed in claim 3, wherein a recess is formed on an outer side wall of another end of the insulating spacer, a bent portion is formed in a middle portion of the second conductive wire so that the second conductive wire is divided into a first portion and a second portion, the second portion of the second conductive wire is coaxially disposed with the first conductive wire, and the first portion of the second conductive wire is matched with the recess.
5. A fast fusing high current high voltage temperature fuse as claimed in claim 1 wherein said electrical connector is a metal spring, said first conductive wire is electrically connected to said second conductive wire through said metal spring, and when said metal spring deforms, said elastic member drives said insulating spacer between said first conductive wire and said second conductive wire.
6. A large-current high-voltage temperature fuse capable of being fused rapidly as claimed in claim 5, wherein said first lead and said second lead are arranged non-coaxially, said metal elastic member comprises a metal elastic arm and a second temperature sensing body, one end of said metal elastic arm is electrically connected to said first lead, the other end of said metal elastic arm is welded to said second lead through said second temperature sensing body, said elastic member is a spring, and a groove is provided on the inner side wall of one end of said insulating spacer;
one end of the spring is abutted against the abutting part of the external device, the other end of the spring is abutted against the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted against the middle part of the metal elastic arm and is close to the second temperature sensing body.
7. The fast fusible high-current high-voltage temperature fuse as claimed in claim 5, wherein the first and second wires are non-coaxially disposed, the metal elastic element includes a metal elastic arm and a contact, the metal elastic arm is a bimetallic strip, one end of the metal elastic arm is electrically connected to the first wire, the other end of the metal elastic arm is provided with the contact, the contact is electrically connected to the second wire in a contact manner, the elastic element is a spring, and a groove is formed on an inner side wall of one end of the insulating spacer;
one end of the spring is abutted to the abutting portion of the peripheral, the other end of the spring is abutted to the inner bottom surface of the groove, and the other end of the insulating spacer bush is abutted to the middle of the metal elastic arm and is close to the contact.
8. A fast fusible high-current high-voltage temperature fuse as claimed in claim 6 or 7, further comprising a housing, wherein the high-current high-voltage temperature fuse is disposed in the housing, and the abutting portion of the external device is an inner surface of the housing.
9. The high-current high-voltage temperature fuse capable of being fused rapidly as claimed in claim 8, wherein a recess is formed on an outer side wall of another end of the insulating spacer, a bent portion is formed in a middle portion of the second conductive wire so that the second conductive wire is divided into a first portion and a second portion, the second portion of the second conductive wire is coaxially disposed with the central axis of the spring, and the first portion of the second conductive wire is matched with the recess.
10. The high-current high-voltage temperature fuse capable of being fused rapidly as claimed in claim 1, further comprising a bar-shaped shell with an opening at one end and an end cap covering the opening of the bar-shaped shell, wherein a first through hole for a first wire to pass through is formed at the other end of the bar-shaped shell, a second through hole for a second wire to pass through is formed in the end cap, and resin is respectively disposed at the first through hole and the second through hole so that the bar-shaped shell and the end cap form a sealed cavity together.
11. A fast fusible high-current high-voltage temperature fuse as claimed in claim 1, further comprising an upper housing and a lower housing, wherein the upper housing and the lower housing are covered with each other, one end of the lower housing has a first through hole for passing a first wire, the other end of the lower housing has a second through hole for passing a second wire, and the first through hole and the second through hole are both provided with resin to form a sealed cavity together with the lower housing.
12. A fast fusible high current high voltage temperature fuse as claimed in claim 1, further comprising a bar housing having an opening at one end and an end cap covering the opening of the bar housing, wherein the end cap has a first through hole for a first wire to pass through and a second through hole for a second wire to pass through, and the first through hole and the second through hole are both provided with resin to form a sealed cavity together with the end cap.
13. A fast fusible high-current high-voltage temperature fuse as claimed in claim 11, wherein the inner wall of the other end of the strip housing is provided with a limiting groove adapted to the width of the other end of the insulating spacer.
14. A fast fusible high-current high-voltage temperature fuse as claimed in claim 1, further comprising an upper housing and a lower housing covering each other, wherein one end of the lower housing has a first through hole for passing the first wire and a second through hole for passing the second wire, and the first through hole and the second through hole are both provided with resin to form a sealed cavity together with the lower housing.
15. A fast fusing large current high voltage temperature fuse as claimed in claim 14, wherein the inner sidewall of the end of the sealed cavity far from the first through hole is provided with a limit slot adapted to the width of the other end of the insulating spacer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664558.4A CN115172100A (en) | 2022-06-13 | 2022-06-13 | Large-current high-voltage temperature fuse capable of being rapidly fused |
| PCT/CN2023/086871 WO2023241180A1 (en) | 2022-06-13 | 2023-04-07 | High-current high-voltage temperature fuse capable of being quickly fused |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210664558.4A CN115172100A (en) | 2022-06-13 | 2022-06-13 | Large-current high-voltage temperature fuse capable of being rapidly fused |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115172100A true CN115172100A (en) | 2022-10-11 |
Family
ID=83486048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210664558.4A Pending CN115172100A (en) | 2022-06-13 | 2022-06-13 | Large-current high-voltage temperature fuse capable of being rapidly fused |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115172100A (en) |
| WO (1) | WO2023241180A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241180A1 (en) * | 2022-06-13 | 2023-12-21 | 厦门赛尔特电子有限公司 | High-current high-voltage temperature fuse capable of being quickly fused |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2754334B2 (en) * | 1994-06-22 | 1998-05-20 | ウチヤ・サーモスタット株式会社 | Thermostat with built-in fuse spring |
| CN2741173Y (en) * | 2004-11-04 | 2005-11-16 | 潘启宏 | Heat sensitive switch |
| CN105161356A (en) * | 2015-08-24 | 2015-12-16 | 兴勤（常州）电子有限公司 | Temperature fuse module |
| CN204885012U (en) * | 2015-08-24 | 2015-12-16 | 兴勤（常州）电子有限公司 | Temperature insurance module |
| CN208093449U (en) * | 2018-04-08 | 2018-11-13 | 厦门赛尔特电子有限公司 | A kind of temperature controller with Thermal protection |
| CN113851361A (en) * | 2021-09-17 | 2021-12-28 | 厦门赛尔特电子有限公司 | High-flux temperature fuse |
| CN218482154U (en) * | 2022-06-13 | 2023-02-14 | 厦门赛尔特电子有限公司 | Large-current high-voltage temperature fuse capable of being rapidly fused |
| CN115172100A (en) * | 2022-06-13 | 2022-10-11 | 厦门赛尔特电子有限公司 | Large-current high-voltage temperature fuse capable of being rapidly fused |
-
2022
- 2022-06-13 CN CN202210664558.4A patent/CN115172100A/en active Pending
-
2023
- 2023-04-07 WO PCT/CN2023/086871 patent/WO2023241180A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023241180A1 (en) * | 2022-06-13 | 2023-12-21 | 厦门赛尔特电子有限公司 | High-current high-voltage temperature fuse capable of being quickly fused |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023241180A1 (en) | 2023-12-21 |
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