CN213905276U

CN213905276U - Can multiplexing fuse

Info

Publication number: CN213905276U
Application number: CN202022096790.1U
Authority: CN
Inventors: 崔伟磊
Original assignee: Xi'an Ancient River Electrical Engineering Co ltd
Current assignee: Xi'an Ancient River Electrical Engineering Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-08-06
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a can multiplexing fuse, including the fusing box, the inside of fusing box is provided with the link mechanism, and the inside of link mechanism is provided with the fusing mechanism, and the link mechanism includes the fixed block, and the round hole has been seted up to the inside of fixed block, and the fixed cover in inside of round hole has connect the sodium piece, the one end and the first wire fixed connection of sodium piece, and the fixed cover of first wire is in the one end of round hole, and the fixed cover of the other end of first wire is inside first sleeve the beneficial effects of the utility model are that: absorb the overcurrent through the sodium piece that sets up, and then make sodium piece rapid heating become the plasma steam of high temperature high-pressure state by the solid, and then promote the piston ring by steam and remove, remove the piston and drive electrically conductive patchcord and sodium piece separation, it is inside to promote argon gas through the through-hole through the piston ring and get into the argon gas chamber simultaneously, makes the argon gas can not extrude first wire, and then prevents that first wire pressurized from breaking away from inside the round hole, prevents that the fuse from becoming invalid.

Description

Can multiplexing fuse

Technical Field

The utility model relates to the field of switch technology, specifically be a can multiplexing fuse.

Background

The fuse is an electric appliance which fuses a melt by using heat generated by the fuse when the current exceeds a specified value and disconnects a circuit, the fuse melts the melt by using the heat generated by the fuse after the current exceeds the specified value for a period of time, so that the circuit is disconnected.

The existing self-resetting fuse is in a high-resistance state when a short circuit occurs to a circuit, the fuse absorbs passing current through the internal sodium block and is rapidly heated when in use, the solid is changed into plasma steam in a high-temperature and high-pressure state, the piston is pushed to move, and then the fuse is disconnected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can reducible fuse, in order to solve the above-mentioned background art in the proposed from the fuse when using, when the circuit takes place the short circuit, be high resistance form from the fuse, the fuse absorbs the electric current of process and heats rapidly through inside sodium piece when using, make it become the plasma steam of high temperature high-pressure state by the solid, and then promote the piston and remove, and then make the fuse divide absolutely, but when the steam that sodium produced promotes the piston, can lead to the wire of argon gas promotion one end, probably promote the wire and break away from the fuse is inside, and then probably lead to the unable connection problem that resumes of fuse.

In order to achieve the above object, the utility model provides a following technical scheme: a recoverable fuse comprises a fuse box, wherein a connecting mechanism is arranged inside the fuse box, a fusing mechanism is arranged inside the connecting mechanism, the connecting mechanism comprises a fixed block, a round hole is formed inside the fixed block, a sodium block is fixedly sleeved inside the round hole, one end of the sodium block is fixedly connected with a first wire, the first wire is fixedly sleeved at one end of the round hole, the other end of the first wire is fixedly sleeved inside a first sleeve, the first sleeve is fixedly sleeved on the outer wall of one end of the fuse box, one end of the round hole, far away from the first wire, is fixedly sleeved with a second wire, the other end of the second wire is fixedly sleeved inside a second sleeve, and the second sleeve is fixedly sleeved on the outer wall of the other end of the fuse box; the fusing mechanism comprises a movable piston, the movable piston is movably sleeved inside a round hole, a fixed hole is formed in the surface of the movable piston, a contact rod is fixedly sleeved inside the fixed hole, one end, away from the sodium block, of the contact rod is fixedly connected with a flexible wire, the flexible wire is fixedly connected with a second wire, an exhaust hole is formed in the inner wall of the round hole, the other end of the exhaust hole is communicated with an argon cavity, and the argon cavity is formed inside the fixed block; the feeler lever is in contact with the sodium block.

Preferably, the vent hole is opened between the movable piston and the second wire.

Compared with the prior art, the beneficial effects of the utility model are that: absorb the overcurrent through the sodium piece that sets up, and then make sodium piece rapid heating become the plasma steam of high temperature high-pressure state by the solid, and then promote by steam and remove the piston and remove, remove the piston and drive feeler lever and sodium piece separation, inside promoting argon gas through removing the piston simultaneously and passing through the through-hole and get into the argon gas chamber, make the argon gas can not extrude first wire, and then prevent that first wire pressurized from breaking away from inside the round hole, prevent that the fuse from becoming invalid.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the fusing mechanism of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention;

fig. 4 is the utility model discloses a fixed block looks sideways at the schematic diagram.

In the figure: 1. a fuse box; 2. a wiring mechanism; 21. a fixed block; 22. a circular hole; 23. sodium blocks; 24. a first conductive line; 25. a first sleeve; 26. a second conductive line; 27. a second sleeve; 3. a fusing mechanism; 31. moving the piston; 32. a fixing hole; 33. a feeler lever; 34. a flexible wire; 35. An exhaust hole; 36. an argon gas chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a resettable fuse comprises a fuse box 1, a wiring mechanism 2 is arranged inside the fuse box 1, and a fusing mechanism 3 is arranged inside the wiring mechanism 2.

The connecting mechanism 2 comprises a fixed block 21, a round hole 22 is formed in the fixed block 21, a sodium block 23 is fixedly sleeved in the round hole 22, one end of the sodium block 23 is fixedly connected with a first lead 24, the first lead 24 is fixedly sleeved at one end of the round hole 22, the other end of the first lead 24 is fixedly sleeved in a first sleeve 25, the first sleeve 25 is fixedly sleeved on the outer wall of one end of the fusing box 1, one end of the round hole 22 far away from the first lead 24 is fixedly sleeved with a second lead 26, the other end of the second lead 26 is fixedly sleeved in a second sleeve 27, the second sleeve 27 is fixedly sleeved on the outer wall of the other end of the fusing box 1, when the short circuit occurs in the circuit, the short-circuit current passes through the sodium block 23, the short-circuit current is absorbed by the arranged sodium block 23, the sodium block 23 is rapidly heated and changed from solid to plasma steam in a high-temperature and high-pressure state, and the steam pushes the moving piston 31 to move.

The fusing mechanism 3 comprises a movable piston 31, the movable piston 31 is movably sleeved inside a circular hole 22, a fixed hole 32 is formed in the surface of the movable piston 31, a contact rod 33 is fixedly sleeved inside the fixed hole 32, a flexible wire 34 is fixedly connected to one end, far away from a sodium block 23, of the contact rod 33, the flexible wire 34 is fixedly connected with a second wire 26, an exhaust hole 35 is formed in the inner wall of the circular hole 22, the other end of the exhaust hole 35 is communicated with an argon gas cavity 36, the argon gas cavity 36 is formed inside the fixed block 21, the movable piston 31 drives the contact rod 33 to be separated from the sodium block 23, meanwhile, the argon gas is pushed by the movable piston 31 to enter the argon gas cavity 36 through the exhaust hole 35, so that the argon gas cannot extrude the first wire 24, further, the first wire 24 is prevented from being separated from the inside of the circular hole 23 under pressure, the first wire 24 and the second wire 26 are prevented from being connected again, the moving piston 31 is pushed to move back by the argon gas inside the argon gas chamber 36, so that the sodium block 23 is contracted and is conducted again.

The trolley 33 is disposed in contact with the sodium block 23 such that the sodium block 23 communicates the trolley 33 with the first lead 24.

The exhaust hole 35 is opened between the movable piston 31 and the second lead 26, so that the movable piston 31 pushes the argon gas to move toward the inside of the exhaust hole 35.

Specifically, use the utility model discloses the time, when the short circuit takes place for the circuit, short-circuit current passes through sodium piece 23, absorb short-circuit current through the sodium piece 23 that sets up, and then make the quick heating of sodium piece 23 become the plasma steam of high temperature high pressure state by the solid, and then promote by steam and remove piston 31 and remove, it drives feeler lever 33 and sodium piece 23 separation to remove piston 31, it passes through inside exhaust hole 35 entering argon gas chamber 36 to promote argon gas through removing piston 31 simultaneously, make the argon gas can not extrude first wire 24, and then prevent that first wire 24 pressurized from breaking away from inside round hole 23, prevent that first wire 24 and second wire 26 can't be connected once more, then sodium piece 23 melts 3ms later resolidify into the solid once more, promote through the inside argon gas of argon gas chamber 36 and remove piston 31 and move back, make sodium piece 23 receive the extrusion shrink into the solid electrically conductive once more.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A resettable fuse, comprising: the fuse comprises a fuse box (1), a connecting mechanism (2) is arranged inside the fuse box (1), a fuse mechanism (3) is arranged inside the connecting mechanism (2), the connecting mechanism (2) comprises a fixing block (21), a round hole (22) is formed inside the fixing block (21), a sodium block (23) is fixedly sleeved inside the round hole (22), one end of the sodium block (23) is fixedly connected with a first lead (24), the first lead (24) is fixedly sleeved at one end of the round hole (22), the other end of the first lead (24) is fixedly sleeved inside a first sleeve (25), the first sleeve (25) is fixedly sleeved on the outer wall of one end of the fuse box (1), a second lead (26) is fixedly sleeved at one end, far away from the first lead (24), of the round hole (22), of the other end of the second lead (26) is fixedly sleeved inside a second sleeve (27), the second sleeve (27) is fixedly sleeved on the outer wall of the other end of the fusing box (1); the fusing mechanism (3) comprises a movable piston (31), the movable piston (31) is movably sleeved inside a round hole (22), a fixed hole (32) is formed in the surface of the movable piston (31), a contact rod (33) is fixedly sleeved inside the fixed hole (32), one end, far away from a sodium block (23), of the contact rod (33) is fixedly connected with a flexible lead (34), the flexible lead (34) is fixedly connected with a second lead (26), an exhaust hole (35) is formed in the inner wall of the round hole (22), the other end of the exhaust hole (35) is communicated with an argon gas cavity (36), and the argon gas cavity (36) is formed inside a fixed block (21); the feeler lever (33) is arranged in contact with the sodium block (23).

2. A resettable fuse as claimed in claim 1, wherein: the exhaust hole (35) is formed between the movable piston (31) and the second lead (26).