CN116435159A - Novel drop-out fuse based on memory alloy temperature deformation spring - Google Patents
Novel drop-out fuse based on memory alloy temperature deformation spring Download PDFInfo
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- CN116435159A CN116435159A CN202310303692.6A CN202310303692A CN116435159A CN 116435159 A CN116435159 A CN 116435159A CN 202310303692 A CN202310303692 A CN 202310303692A CN 116435159 A CN116435159 A CN 116435159A
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- fuse
- tube
- deformation spring
- memory alloy
- elastic contact
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- 229910001285 shape-memory alloy Inorganic materials 0.000 title claims abstract description 50
- 239000004020 conductor Substances 0.000 claims abstract description 6
- 210000001503 joint Anatomy 0.000 claims abstract 2
- 230000004927 fusion Effects 0.000 claims description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 230000000670 limiting effect Effects 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 239000012212 insulator Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/54—Protective devices wherein the fuse is carried, held, or retained by an intermediate or auxiliary part removable from the base, or used as sectionalisers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H2085/0004—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive making use of shape-memory material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Fuses (AREA)
Abstract
The utility model discloses a novel drop-out fuse based on a memory alloy temperature deformation spring, which belongs to the technical field of drop-out fuses, and comprises a temperature deformation spring protection structure and a fuse protection structure which are mutually connected in series, wherein the temperature deformation spring protection structure comprises a deformation spring which contracts along with the temperature rise, two ends of the deformation spring are respectively and fixedly connected with a rain cover and an elastic contact piece with electric conductivity, and the rain cover with fixed positions is connected with an external circuit; the fuse protection structure comprises a fuse, a rigid fuse tube is arranged outside the fuse, the fuse tube is rotationally arranged on an external circuit, the fuse tube is provided with an opening end and a closing end, the closing end is made of conductive materials, the fuse is in contact connection with one side of the closing end, the other side of the closing end is in butt joint or disconnection with an elastic contact piece, the fuse penetrates through the opening end to be fixedly connected with the external circuit, the fusing temperature of the fuse is higher than the deformation temperature of a temperature deformation spring, and the working reliability of the protection circuit is improved under the double protection of the two protection structures.
Description
Technical Field
The utility model relates to the technical field of drop-out fuses, in particular to a novel drop-out fuse based on a memory alloy temperature deformation spring.
Background
The drop-out fuse is widely applied to a power system by virtue of the safety reliability and the superior cost performance, and plays a role in protecting the power system. The existing drop-out fuses are used for cutting off circuits by using the fuse wire to blow as in the utility model with the application number of 201820321726.9 and the utility model with the application number of 201920770384.3, and after the fuse wire is blown, workers need to climb onto a pole tower to replace the fuse wire and then recover, so that the workload of the workers is large and the working property of the workers has a certain danger. The fuse wire is replaced by power failure, the modern life is not always powered on, the power failure causes economic and social losses to users, and a plurality of inconveniences are brought to the work and the life of the users; meanwhile, a large number of fuses are consumed due to the wide use of the drop-out fuse in a power grid, so that economic loss is increased. Therefore, the utility model provides a novel drop-out fuse based on a memory alloy temperature deformation spring for solving the problems.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the utility model provides a novel drop-out fuse based on a memory alloy temperature deformation spring, and the working reliability of a protection circuit is improved under the double protection of a memory alloy temperature deformation spring protection structure and a fuse protection structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel drop-out fuse based on a memory alloy temperature deformation spring, which comprises a memory alloy temperature deformation spring protection structure and a fuse protection structure which are connected in series, wherein the memory alloy temperature deformation spring protection structure comprises a memory alloy temperature deformation spring which contracts along with the temperature rise, two ends of the memory alloy temperature deformation spring are respectively and fixedly connected with a rain cover and an elastic contact piece with electric conductivity, and the rain cover with fixed positions is connected with a wire inlet end/a wire outlet end of an external circuit; the fuse protection structure comprises a fuse with conductive performance, wherein a rigid fuse tube is arranged outside the fuse, the fuse tube is rotatably arranged on an external circuit, the fuse tube is provided with an open end and a closed end, the closed end is made of conductive materials, the fuse is in contact connection with one side of the closed end, the other side of the closed end is abutted against or disconnected with the elastic contact piece, the fuse passes through the open end and is fixedly connected with an outlet end/inlet end of the external circuit, and the fusing temperature of the fuse is higher than the deformation temperature of the memory alloy temperature deformation spring;
preferably, a conductive disc is arranged on the fuse wire, the conductive disc is fixedly connected with the fusion tube, and the conductive disc is in contact connection with the closed end;
preferably, a cap is detachably mounted at the closed end of the melting pipe, the cap is made of conductive material, one end of the cap is in contact connection with the conductive disc, and the other end of the cap is connected or disconnected with the elastic contact piece;
preferably, a protrusion is arranged on the pipe cap, and a groove matched with the protrusion is arranged on the elastic contact piece;
preferably, a through hole is formed in the elastic contact piece, a middle movable steel body matched with the through hole is arranged on the rainproof cover, the middle movable steel body is inserted into the through hole, the tail end of the middle movable steel body does not exceed the surface of the elastic contact piece, which is contacted with the pipe cap, and the contact point of the elastic contact piece and the pipe cap is positioned on an extension line of the middle movable steel body; limiting rods are arranged at the front end and the rear end of the melting pipe, an opening for limiting the moving path of the melting pipe is arranged between the two limiting rods, the contact point of the elastic contact piece and the pipe cap is positioned on the path limited by the opening, and the size of the opening is matched with the diameter of the melting pipe;
preferably, an operation ring which is convenient for installing the fusion tube in a circuit on state is arranged on the fusion tube, and the operation ring is matched with an operation rod used by staff;
preferably, a lower fixed contact is fixedly arranged on the outlet end/the inlet end, a lower moving contact is arranged on the lower fixed contact, one end of the lower moving contact is rotationally connected with the fusion tube, and the other end of the lower moving contact is fixedly connected with the fusion tube;
preferably, the lower moving contact is provided with an ejecting piece for tensioning the fuse wire, and the length of the ejecting piece is matched with the tightness degree of the fuse wire;
preferably, the ejecting piece is rotatably mounted on the lower movable contact;
preferably, an insulator is arranged on one side of the novel drop-out fuse, one end of the insulator is fixedly connected with the rain cover, and the other end of the insulator is fixedly connected with the lower fixed contact.
Compared with the prior art, the utility model has the following technical effects:
1. according to the utility model, the memory alloy temperature deformation spring protection structure and the fuse protection structure which are connected in series are arranged, and the deformation temperature of the memory alloy temperature deformation spring is lower than the fusing temperature of the fuse, so that the following technical effects can be achieved: firstly, when the memory alloy temperature deformation spring works normally, heat generated by high current firstly causes the memory alloy temperature deformation spring to shrink and deform, and drives the elastic contact piece to move upwards to be separated from contact with the melting pipe, so that a fault line is cut off, and a circuit is protected, at the moment, the fuse is not required to be replaced when the circuit is restored because the fuse is not fused, so that a plurality of inconveniences caused by replacing the fuse in the prior art are solved, and the maintenance cost is reduced; secondly, when the memory alloy temperature deformation spring breaks down and a worker does not find or cannot exchange the memory alloy temperature deformation spring, the fuse wire is blown by heat generated by large current, so that the fuse tube falls under the action of gravity, a fault line is cut off, and the circuit is protected; under the interaction of the memory alloy temperature deformation spring protection structure and the fuse protection structure, the novel drop-out fuse can implement double protection on the circuit, and the reliability of the circuit protection is improved;
2. according to the utility model, the middle movable steel body in a vertical state is arranged, the through hole for the middle movable steel body to pass through is arranged on the elastic contact piece, and the clamping position of the elastic contact piece and the fusion pipe is positioned on the extension line of the middle movable steel body, so that the reset path of the elastic contact piece is limited, and the position accuracy of the elastic contact piece after reset is improved; through set up the gag lever post in the front and back both sides of fusion tube, form the opening that restricts the fusion tube travel path between two gag lever posts, and the joint position of elastic contact piece and fusion tube is in the mode on the route that the opening prescribes a limit to, has restricted the reset path of fusion tube, has improved the position accuracy of fusion tube after reset, under both combined action, has improved the work efficiency when memory alloy temperature deformation spring work is normal, the switch-on circuit again.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a novel drop-out fuse;
FIG. 2 is a schematic cross-sectional view of structure at A;
FIG. 3 is a schematic diagram of the axial structure at A;
FIG. 4 is a schematic diagram of an axial side structure at B;
FIG. 5 is a schematic view of the axial structure in the other direction at B
Wherein, 1, the memory alloy temperature deformation spring; 2. a rain cover; 3. an elastic contact; 4. a wire inlet end; 5. a wire outlet end; 6. a fuse; 7. a fusion pipe; 8. an open end; 9. a closed end; 10. a conductive disc; 11. a tube cap; 13. a protrusion; 14. a groove; 15. a limit bracket; 16. a limit rod; 17. an operating ring; 18. a lower stationary contact; 19. a lower moving contact; 20. a first rotation shaft; 21. a second rotation shaft; 22. a lug; 23. ejecting the sheet; 24. an insulator; 25. a middle movable steel body; 26. a screw; 27. an opening.
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.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 5, the utility model provides a novel drop-out fuse based on a memory alloy temperature deformation spring, which comprises a memory alloy temperature deformation spring protection structure and a fuse protection structure which are connected in series, wherein the memory alloy temperature deformation spring protection structure comprises a memory alloy temperature deformation spring 1 which contracts with the rise of temperature, two ends of the memory alloy temperature deformation spring 1 are respectively and fixedly connected with a rain cover 2 and an elastic contact piece 3 with electric conductivity, and the rain cover 2 with fixed positions is connected with a wire inlet end 4/a wire outlet end 5 of an external circuit; the fuse protection structure comprises a fuse wire 6 with conductive performance, wherein a rigid fuse tube 7 is arranged outside the fuse wire 6, the fuse tube 7 is rotatably arranged on an external circuit, the fuse tube 7 is provided with an open end 8 and a closed end 9, the closed end 9 is made of conductive materials, the fuse wire 6 is in contact connection with one side of the closed end 9, the other side of the closed end 9 is abutted against or disconnected with the elastic contact piece 3, the fuse wire 6 passes through the open end 8 and is fixedly connected with an outgoing line end 5/an incoming line end 4 of the external circuit, when the rain cover 2 is connected with the incoming line end 4, the fuse wire 6 is connected with the incoming line end 4, and when the rain cover 2 is connected with the outgoing line end 5, the fusing temperature of the fuse wire 6 is higher than the deformation temperature of the memory alloy temperature deformation spring 1; when a large current flows through the circuit, the temperature of the memory alloy temperature deformation spring 1 is increased by the large current, when the temperature reaches the deformation critical point of the memory alloy temperature deformation spring 1, the memory alloy temperature deformation spring 1 contracts and deforms, the deformed memory alloy temperature deformation spring 1 drives the elastic contact piece 3 to move upwards, the closed end 9 of the fusion tube 7 is separated from the elastic contact piece 3, the fusion tube 7 supported by the elastic contact piece 3 is lost to rotate downwards around the rotation pivot of the fusion tube 7, and therefore the fault circuit is cut off. The deformation temperature of the memory alloy temperature deformation spring 1 is lower than the fusing temperature of the fuse wire 6, and a fault line can be cut off through the shrinkage action of the memory alloy temperature deformation spring 1 under the condition that the memory alloy temperature deformation spring 1 works normally, and because the fuse wire 6 is not fused at the moment, the whole circuit can be communicated by directly recovering the contact connection between the fusion tube 7 and the elastic contact piece 3 after the fault is removed, so that the maintenance is convenient, the memory alloy temperature deformation spring 1 can be reused, the upper limit of the reuse is high, the memory alloy temperature deformation spring is applicable to various voltage level lines, frequent replacement is not needed, the maintenance times can be reduced, the safety coefficient of staff is improved, and the economic benefit is improved; secondly, when a large current has occurred, but the memory alloy temperature deformation spring 1 is not contracted and deformed, the fuse 6 is blown by the large current, after the tension of the fuse 6 is lost, the fuse tube 7 drops rapidly under the action of self gravity, thereby cutting off a fault line, and the double protection can be implemented on the line, so that the reliability of circuit protection is greatly improved, and as a preferred embodiment of the utility model, the memory alloy temperature deformation spring 1 has the characteristics that the temperature is increased to shrink and the temperature is reduced to restore an elongation state.
One end of the fuse wire 6 is provided with a conductive disc 10, as a preferred embodiment of the utility model, the fuse wire 6 and the conductive disc 10 are in an integrated structure, one end of the fuse tube 7 far away from the opening end 8 is detachably provided with a tube cap 11, the tube opening of the fuse tube 7 is closed by the tube cap 11 to form a closed end 9, the diameter of the conductive disc 10 is matched with the inner diameter of the tube opening of the fuse tube 7, so that the conductive disc 10 can be clamped at the tube opening of the fuse tube 7 to play a role of fixing the fuse wire 6, when the fuse wire 6 is replaced, after the tail end of the fuse wire 6 passes through the fuse tube 7 from top to bottom, the conductive disc 10 is clamped at the tube opening of the fuse tube 7, then the tube cap 11 is screwed, after the tube cap 11 is screwed, the inner surface of the tube cap 11 is contacted with the axial surface of the conductive disc 10, and when a circuit is in a communicating state, the outer surface of the tube cap 11 far away from the conductive disc 10 is abutted against the elastic contact piece 3; the memory alloy temperature deformation spring 1 contracts, so that when the circuit is in an off state, the outer surface of the pipe cap 11 far away from the conductive disc 10 is separated from the elastic contact piece 3; in order to improve the contact performance of the pipe cap 11 and the elastic contact piece 3, the pipe cap 11 is provided with the bulge 13, the elastic contact piece 3 is provided with the groove 14 matched with the bulge 13, and the bulge 13 is assembled at the groove 14, so that the contact stability of the pipe cap 11 and the elastic contact piece 3 is improved.
One end of the elastic contact piece 3, which is far away from the fixed point of the memory alloy temperature deformation spring 1, is fixedly connected with the rain cover 2, the rain cover 2 is also fixedly provided with a limiting support 15, the limiting support 15 is provided with two limiting rods 16, the two limiting rods 16 are respectively positioned at the front side and the rear side of the fusion tube 7, the setting positions of the limiting rods 16 are matched with the positions of the protrusions 13 clamped into the grooves 14, openings 27 are arranged between the two limiting rods 16, the clamping positions of the fusion tube 7 and the elastic contact piece 3 are exactly positioned on paths defined by the openings 27, when the fusion tube 7 is reloaded, under the limiting effect of the openings 27, the fusion tube 7 is exactly positioned at the clamping position of the fusion tube 7 and the elastic contact piece 3 in the vertical state, and the distance between the limiting rods 16 and the fusion tube 7 in the front-rear direction is as small as possible, so that the position deviation of the fusion tube 7 in the transverse direction when the fusion tube 7 is loaded into the position clamped with the elastic contact piece 3 is reduced; in addition, the middle part of the memory alloy temperature deformation spring 1 is penetrated with a middle movable steel body 25, one end of the middle movable steel body 25 is fixedly arranged on the rain cover 2, the other end of the middle movable steel body is inserted into a mounting hole on the elastic contact piece 3, when the memory alloy temperature deformation spring 1 is in an extension state, the tail end of the middle movable steel body 25 does not exceed the inner surface of the elastic contact piece 3, so that thrust force can not be generated on the fusion tube 7, when the memory alloy temperature deformation spring 1 is in a contraction state, the elastic contact piece 3 moves along the direction limited by the middle movable steel body 25, the middle movable steel body 25 is vertically arranged, and the clamping position of the elastic contact piece 3 and the fusion tube 7 is exactly positioned on the extension line of the middle movable steel body 25; when the circuit is cut off due to the shrinkage of the memory alloy temperature deformation spring 1, after the fault is removed and the length of the memory alloy temperature deformation spring 1 is restored to an elongation state, power failure is not needed, a worker uses a special tool to connect the fusion tube 7 back to the circuit within a safe distance, the protrusion 13 is clamped into the groove 14, the circuit can be switched on again, in the process, the push-back direction of the fusion tube 7 is limited through the opening 27, and the moving direction of the elastic contact piece 3 is limited through the middle movable steel body 25, so that the reassembling installation efficiency of the fusion tube 7 and the elastic contact piece 3 is improved; in order to facilitate the pushing back of the melting pipe 7 by a worker, the utility model is provided with the operating ring 17 on the melting pipe 7, the size and shape of the operating ring 17 are matched with those of an insulating operating rod used by the worker, and when a circuit is switched on again, the operating ring 17 is hooked by the insulating operating rod, so that the melting pipe 7 can be connected back into the circuit.
As a preferred embodiment of the utility model, the rain cover 2 is connected with the incoming line end 4, the outgoing line end 5 is fixedly provided with a lower fixed contact 18, the lower fixed contact 18 is provided with a cavity for accommodating a lower moving contact 19, the lower moving contact 19 is placed in the cavity, the lower moving contact 19 is provided with a first rotating shaft 20 and a second rotating shaft 21, the fusion pipe 7 is provided with a lug 22, the lug 22 is rotationally connected with the first rotating shaft 20, the lower fixed contact 18 is provided with a chute for accommodating the second rotating shaft 21, and the second rotating shaft 21 is detachably arranged in the chute; the lower moving contact 19 is provided with a protrusion for winding the fuse wire 6, the upper end of the fuse wire 6 is fixed on the orifice of the melting tube 7, and then the lower end of the fuse wire 6 is wound and fixed on the protrusion, as a preferred embodiment of the utility model, the protrusion is a screw 26 assembled on the lower moving contact 19, the lower moving contact 19 is provided with an ejecting piece 23 for tensioning the fuse wire 6, the length of the ejecting piece 23 is matched with the tightness degree of the fuse wire 6, the fuse wire 6 is tightly fixed inside the melting tube 7 by utilizing the acting force of the ejecting piece 23, the fuse wire 6 is well contacted with the elastic contact piece 3 and the lower moving contact 19, and the ejecting piece 23 is rotatably arranged on the lower moving contact 19.
One side of the novel drop-out fuse is provided with an insulator 24, one end of the insulator 24 is fixedly connected with the rain cover 2, the other end of the insulator 24 is fixedly connected with the lower fixed contact 18, the function of the insulator 24 is supporting and protecting, and convenience and protecting functions can be provided for maintenance of workers.
It should be noted that it will be apparent to those skilled in the art that the present utility model is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. Novel drop-out fuse based on memory alloy temperature deformation spring, its characterized in that: the temperature deformation protection structure comprises a memory alloy temperature deformation spring which contracts with the temperature rise, wherein two ends of the memory alloy temperature deformation spring are respectively and fixedly connected with a rain cover and an elastic contact piece with electric conductivity, and the rain cover with fixed positions is connected with an incoming line end/an outgoing line end of an external circuit; the fuse protection structure comprises a fuse with conductive performance, a rigid fuse tube is arranged outside the fuse, the fuse tube is rotatably arranged on an external circuit, the fuse tube is provided with an open end and a closed end, the closed end is made of conductive materials, the fuse is in contact connection with one side of the closed end, the other side of the closed end is in butt joint or disconnection with the elastic contact piece, the fuse passes through the open end and is fixedly connected with an outlet end/inlet end of the external circuit, and the fusing temperature of the fuse is higher than the deformation temperature of the memory alloy temperature deformation spring.
2. The novel drop-out fuse of claim 1, wherein: the fuse wire is provided with a conductive disc, the conductive disc is fixedly connected with the fusion tube, and the conductive disc is in contact connection with the closed end.
3. The novel drop-out fuse of claim 2, wherein: the closed end of the melting pipe is detachably provided with a pipe cap, the pipe cap is made of conductive materials, one end of the pipe cap is in contact connection with the conductive disc, and the other end of the pipe cap is connected with or disconnected from the elastic contact piece.
4. A novel drop-out fuse in accordance with claim 3, wherein: the pipe cap is provided with a bulge, and the elastic contact piece is provided with a groove matched with the bulge.
5. A novel drop-out fuse in accordance with claim 3, wherein: the elastic contact piece is provided with a through hole, the rainproof cover is provided with a middle movable steel body matched with the through hole, the middle movable steel body is inserted into the through hole, the tail end of the middle movable steel body does not exceed the surface of the elastic contact piece, which is contacted with the pipe cap, and the contact point of the elastic contact piece and the pipe cap is positioned on an extension line of the middle movable steel body; limiting rods are arranged at the front end and the rear end of the melting pipe, an opening for limiting the moving path of the melting pipe is arranged between the two limiting rods, the contact point of the elastic contact piece and the pipe cap is located on the path limited by the opening, and the size of the opening is matched with the diameter of the melting pipe.
6. The novel drop-out fuse of claim 5, wherein: the utility model discloses a fuse tube, be equipped with on the fuse tube be convenient for with the fuse tube is installed to circuit on-state's operation ring, operation ring and the action bars looks adaptation that the staff used.
7. The novel drop-out fuse of claim 1, wherein: the wire outlet end/the wire inlet end is fixedly provided with a lower fixed contact, the lower fixed contact is provided with a lower moving contact, one end of the lower moving contact is rotationally connected with the fusion tube, and the other end of the lower moving contact is fixedly connected with the fuse wire.
8. The novel drop-out fuse of claim 7, wherein: and the lower moving contact is provided with an ejection piece for tensioning the fuse wire, and the length of the ejection piece is matched with the tightness degree of the fuse wire.
9. The novel drop-out fuse of claim 8, wherein: the ejecting piece is rotatably arranged on the lower movable contact.
10. The novel drop-out fuse of claim 7, wherein: one side of the novel drop-out fuse is provided with an insulator, one end of the insulator is fixedly connected with the rain cover, and the other end of the insulator is fixedly connected with the lower fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310303692.6A CN116435159A (en) | 2023-03-27 | 2023-03-27 | Novel drop-out fuse based on memory alloy temperature deformation spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310303692.6A CN116435159A (en) | 2023-03-27 | 2023-03-27 | Novel drop-out fuse based on memory alloy temperature deformation spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116435159A true CN116435159A (en) | 2023-07-14 |
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ID=87093614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310303692.6A Pending CN116435159A (en) | 2023-03-27 | 2023-03-27 | Novel drop-out fuse based on memory alloy temperature deformation spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116435159A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116978747A (en) * | 2023-09-22 | 2023-10-31 | 兰州西脉科立新材料有限公司 | Power supply fusing device driven by memory alloy wire and used for new energy automobile |
-
2023
- 2023-03-27 CN CN202310303692.6A patent/CN116435159A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116978747A (en) * | 2023-09-22 | 2023-10-31 | 兰州西脉科立新材料有限公司 | Power supply fusing device driven by memory alloy wire and used for new energy automobile |
| CN116978747B (en) * | 2023-09-22 | 2023-12-15 | 兰州西脉科立新材料有限公司 | Power supply fusing device driven by memory alloy wire and used for new energy automobile |
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