WO2018035754A1

WO2018035754A1 - Quick-replaceable fuse

Info

Publication number: WO2018035754A1
Application number: PCT/CN2016/096536
Authority: WO
Inventors: 朱小涛
Original assignee: 朱小涛
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2018-03-01

Abstract

A quick-replaceable fuse, comprising a base (1). A fixed end housing (2) and a movable end housing (3) are mounted on the upper surface of the base (1), and a fusing assembly (4) is inserted between the fixed end housing (2) and the movable end housing (3). The base (1) is provided with a transmission self-locking mechanism (5) matching the movable end housing (3). The fusing assembly (4) comprises a fusing housing (41), a melt (42), baffle blocks (43), fusing elastic members (44), and sealing covers (45). The melt (42) is provided in the inner cavity of the fusing housing (41), and both ends of the melt (42) are provided with the baffle blocks (43). The melt (42) comprises fuse wires (421) and fuse blocks (422) which are distributed at intervals. The sealing covers (45) are clamped at both ends of the fusing housing (41), and the fusing elastic member (44) is mounted between the fusing baffle block (43) and the sealing cover (45). By designing the melt (42) in such a manner that the fuse wires (421) and fuse blocks (422) are distributed at intervals, the fusing speed is effectively improved. In addition, the fusing assembly (4) can effectively gather the melt (42) during fusing, thereby preventing spattering. Moreover, the transmission self-locking mechanism (5) can mount the fusing assembly (4) by one step and locks same, saving time and labor.

Description

Quick replacement fuse

Technical field

The invention relates to the field of high-voltage technology, in particular to a quick-change fuse.

Background technique

A fuse is an electrical appliance that breaks a circuit by breaking heat from the heat generated by itself when the current exceeds a specified value. A fuse is a current protector made by applying this principle after the current exceeds a specified value for a period of time to melt the melt by its own heat. Fuses are widely used in high and low voltage power distribution systems and control systems as well as in electrical equipment. As short-circuit and over-current protectors, they are one of the most popular protection devices.

However, the fuses of the current fuses are slow, and the replacement is time-consuming and labor-intensive. At the same time, some fuses with simple structure do not have a better protection measure, and it is easy to cause the molten metal to splash around and cause danger. Therefore, a quick change type is proposed. Fuse.

Summary of the invention

It is an object of the present invention to provide a quick-change fuse to solve the problems set forth in the background art described above.

In order to achieve the above object, the present invention provides the following technical solution: a quick-change fuse includes a base, a fixed end shell is fixedly mounted on one end of the upper surface of the base, and the movable end is movably mounted on the other end of the upper surface. a fuse, and a fuse assembly is inserted between the fixed end shell and the movable end shell, and the base is provided with a transmission self-locking mechanism matched with the movable end shell;

The fuse assembly includes a fuse shell, a melt, a stopper, a fuse elastic member and a cover, the fuse shell is provided with a melt in the inner cavity, and both ends of the melt are provided with a stopper, the melt The fuse and the frit are included, and the fuse and the frit are spaced apart, and the cover is fastened at both ends of the fuse shell, and the cover is installed between the stopper and the cover There are fusible elastic members.

Wherein, the transmission self-locking mechanism comprises an L-shaped rotating rod, a "back" shaped pressing piece, a self-locking rod, an elastic member and a reed hook, wherein the L-shaped rotating rod is rotatably mounted in the inner cavity of the base, the L One end of the rotating rod is connected with the movable end shell, and the other end of the L-shaped rotating rod is connected with one end of the self-locking rod, and the other end of the self-locking rod extends through the upper surface of the housing to the outside of the housing. The "back" shape is slidably mounted on the bottom of the inner cavity of the base by a piece, and the "back" shape is mounted with an elastic member for resetting the self-locking lever in the middle of the piece, and the reed hook is fixedly mounted at the center of the bottom of the base. And the upper end of the reed hook is movably connected to the L-shaped lever.

Wherein, the transmission self-locking mechanism comprises a sheet, a sliding piece, a beam, a resetting member, a longitudinal beam, a fixing ring and a locking member, and one end of the longitudinal beam is fixedly mounted with a sliding piece through the beam, the sliding piece and the sliding piece One end of the tab is connected, the other end of the tab extends through the housing to the outside of the housing, the longitudinal beam is sleeved with a resetting member and a fixing ring, and the fixing ring is fixedly mounted to the bottom of the housing, the longitudinal beam The other end is provided with a lock.

Wherein, the lock member comprises a lock housing, a lock elastic member, a rotating shaft, a lever, a corrugated plate and a connecting post, wherein the inner cavity of the lock housing is provided with a corrugated plate, and the smooth surface of the corrugated plate The side is provided with a lock elastic member, the corrugated surface of the corrugated plate is provided with a connecting post, and the surface of the connecting post is engraved with corrugated for matching with the corrugated plate, and the end of the corrugated plate is mounted on the housing by rotation The shaft in the inner chamber is connected to the lever.

The lock member includes a lock housing, a lock elastic member, a rotating shaft, a lever, an electromagnet, a contact contact member and a drive plate, and a drive plate is disposed in the inner cavity of the lock housing, One side of the driving plate is provided with a locking member elastic member, and the other side of the driving plate is fixedly mounted with a contact contact member, and an inner surface of the locking member housing is fixedly mounted on the same side of the elastic member of the locking member And the electromagnet is connected to the electrical circuit through the contact contact, and the end of the drive plate is connected to the lever by rotating the rotating shaft mounted in the inner cavity of the housing.

Compared with the prior art, the invention has the beneficial effects that the invention can effectively increase the fusing speed by designing the melt into a fuse and a frit spacing distribution, and at the same time, the fuse can be blown when the melt is blown. It effectively gathers to prevent dripping, and the transmission self-locking mechanism can realize the one-step installation of the fuse assembly and lock it, saving time and effort.

Summary of the invention

Figure 1 is a schematic view of the structure of the present invention;

2 is a schematic structural view of a first embodiment of a transmission self-locking mechanism of the present invention;

3 is a schematic structural view of a second embodiment of the transmission self-locking mechanism of the present invention;

Figure 4 is a schematic structural view of a first embodiment of the lock member of the present invention;

Figure 5 is a schematic view showing the structure of a second embodiment of the lock member of the present invention.

In the figure: 1 base, 2 fixed end shell, 3 movable end shell, 4 fuse assembly, 41 fuse shell, 42 melt, 421 fuse, 422 frit, 43 stop, 44 fuse elastic, 45 cover, 5 Transmission self-locking mechanism, 511L-shaped rotating rod, 512 "return" shaped piece, 513 self-locking rod, 514 elastic part, 515 reed hook, 521 piece, 522 slide, 523 beam, 524 reset, 525 stringer 526 fixing ring, 527 locking member, 5271 locking member housing, 5272 locking member elastic member, 5273 rotating shaft, 5274 lever, 5275 corrugated plate, 5276 connecting column, 5277 electromagnet, 5278 contact contact and 5279 transmission plate.

detailed description

The present invention is further described below in conjunction with specific embodiments, but the scope of protection of the present invention is not limited thereto.

Referring to FIG. 1 and FIG. 2, the present invention provides a first embodiment: a quick-change fuse, comprising a base 1. The upper surface of the base 1 is fixedly mounted with a fixed end shell 2 at one end thereof, and the upper surface is The other end of the activity is mounted with a movable end shell 3, and a fuse assembly 4 is inserted between the fixed end shell 2 and the movable end shell 3, and the fuse assembly 4 includes a fuse shell 41, a melt 42, a stopper 43, and a fusion elasticity. a member 44 and a cover 45, a melt 42 is disposed in the inner cavity of the fuse shell 41, and a stopper 43 is disposed at both ends of the melt 42, and the melt 42 includes a fuse 421 and a frit 422. And the fuse 421 and the frit 422 are spaced apart, the fuse shell A sealing cover 45 is fastened to both ends of the 41, and a fuse elastic member 44 is mounted between the stopper 43 and the cover 45, so that the fuse assembly 4 can effectively gather the melt member 42 when it is blown to prevent splashing. The base 1 is provided with a transmission self-locking mechanism 5 matched with the movable end shell 3, and the transmission self-locking mechanism 5 includes an L-shaped rotating rod 511, a "back" shaped pressing piece 512, a self-locking rod 513, and an elastic member 514. And the reed hook 515, the L-shaped rotating rod 511 is rotatably mounted in the inner cavity of the base 1, one end of the L-shaped rotating rod 511 is connected with the movable end shell 3, and the other end of the L-shaped rotating rod 511 is self-contained One end of the lock lever 513 is connected, and the other end of the self-locking lever 513 extends through the upper surface of the housing 1 to the outside of the housing 1. The "back"-shaped slide is slidably mounted on the bottom of the inner cavity of the base 1. And the "back"-shaped middle portion of the sheet 512 is mounted with an elastic member 514 for resetting the self-locking rod 513, the reed hook 515 is fixedly mounted at the center of the bottom of the base 1, and the upper end of the reed hook 515 is L-shaped. The movable connection of the rotating rod 511 effectively distributes the speed of the fuse by designing the melt 42 to be spaced apart from the fuse 421 and the frit 422. Gear 5 may be implemented self-locking mechanism mounted fuse assembly step 4, and lock it, saving time and effort.

In use, only the fuse assembly 4 is installed between the fixed end shell 2 and the movable end shell 3, so that the self-locking rod 513 will drive the L-shaped rotating rod 511 to rotate, and the movable end shell 3 is buckled. The "back" shape is released by the tab 512, the reed hook 515, and the self-locking lever 513 will automatically eject the fuse assembly 4.

Referring to FIG. 1 , FIG. 3 and FIG. 4 , the present invention provides a second embodiment: a quick-change fuse includes a base 1 , and a fixed end shell 2 is fixedly mounted on one end of the upper surface of the base 1 . The other end of the upper surface is movably mounted with a movable end shell 3, and a fuse assembly 4 is inserted between the fixed end shell 2 and the movable end shell 3, and the fuse assembly 4 includes a fuse shell 41, a melt 42, and a stopper 43. And melting the elastic member 44 and the cover 45, the melt chamber 42 is provided with a melt 42 in the inner cavity, and both ends of the melt 42 are provided with a stopper 43, the melt 42 including the fuse 421 and the fuse Block 422, and the fuse 421 and the frit 422 are spaced apart, the cover 45 is fastened at both ends of the fuse shell 41, and the fuse elastic member 44 is installed between the stopper 43 and the cover 45, which effectively improves The speed of the fuse, while the melt 42 fuses the assembly 4 when it is blown, it can be effective The base 1 is provided with a transmission self-locking mechanism 5 for matching with the movable end casing 3, and the transmission self-locking mechanism 5 includes a pressing piece 521, a sliding piece 522, a beam 523, and a resetting member 524. a longitudinal beam 525, a fixing ring 526 and a locking member 527. One end of the longitudinal beam 525 is fixedly mounted with a sliding piece 522 through a beam 523. The sliding piece 522 is connected with one end of the pressing piece 521, and the other piece 521 One end extends through the housing 1 to the outside of the housing 1. The vertical beam 525 is sleeved with a reset member 524 and a fixing ring 526, and the fixing ring 526 is fixedly mounted to the bottom of the housing 1, and the longitudinal beam 525 is further One end is provided with a locking member 527, and the locking member 527 includes a locking member housing 5271, a locking member elastic member 5272, a rotating shaft 5273, a lever 5274, a corrugated plate 5275 and a connecting post 5276, and the inner cavity of the locking member housing 5271 A corrugated plate 5275 is provided, and the smooth surface side of the corrugated plate 5275 is provided with a lock elastic member 5272. The corrugated surface of the corrugated plate 5275 is provided with a connecting post 5276, and the surface of the connecting post 5276 is engraved with a corrugated plate. 5275 matches the corrugation used to cause the bite to prevent falling off, and the end of the corrugated plate 5275 is mounted to the housing by rotation The rotating shaft 5273 in the inner cavity of the 1 is connected with the lever 5274, and the transmission self-locking mechanism 5 can realize the one-step installation of the fuse assembly 4 and lock it, saving time and labor.

When the lever 5274 is used, the corrugated plate 5275 and the connecting post 5276 are separated, because the elastic force of the resetting member 524 causes the sliding piece 522 to slide the movable end shell 3 upward, thereby disengaging the fuse assembly 4, and inserting the new fuse assembly 4 After the connection, press the button 521 to lock, convenient and practical, saving time and effort.

Referring to FIG. 5, the lock member of the present invention provides an alternative: the lock member 527 includes a lock housing 5271, a lock elastic member 5272, a rotating shaft 5273, a lever 5274, an electromagnet 5277, and a contact contact 5278. And a driving plate 5279, a driving plate 5279 is disposed in the inner cavity of the lock housing 5271, and one side of the driving plate 5279 is provided with a locking member elastic member 5272, and the other side of the driving plate 5279 is fixedly mounted Contact contact 5278, in the inner cavity of the lock housing 5271, an electromagnet 5277 is fixedly mounted on the same side of the lock elastic member 5272, and the electromagnet 5277 is connected to the electrical circuit through the contact contact 5278. The end of the drive plate 5279 is rotated by a rotating shaft 5273 and a lever 5274 which are mounted in the inner cavity of the housing 1. The connection is such that the electromagnet 5277 is connected to the electrical circuit to detect whether the electrical circuit is normal.

When the lever 5274 is used to make the electromagnet 5277 open, the lock member 527 can be opened.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any technical person skilled in the art within the technical scope disclosed by the present invention, the technical solution according to the present invention Equivalent substitutions or modifications of the inventive concept are intended to be included within the scope of the invention.

Claims

A quick-change fuse, comprising: a base, the upper surface of the base is fixedly mounted with a fixed end shell at one end, and the other end of the upper surface is movably mounted with a movable end shell, and the fixed end shell and the movable end shell A fuse assembly is interposed therebetween, and the base is provided with a transmission self-locking mechanism matched with the movable end shell;

The fuse assembly includes a fuse shell, a melt, a stopper, a fuse elastic member and a cover, the fuse shell is provided with a melt in the inner cavity, and both ends of the melt are provided with a stopper, the melt The fuse and the frit are included, and the fuse and the frit are spaced apart. The two ends of the fuse shell are fastened with a cover, and a fuse elastic member is installed between the block and the cover.
A quick-change fuse according to claim 1, wherein: said transmission self-locking mechanism comprises an L-shaped rotating lever, a "back" shaped pressing piece, a self-locking lever, an elastic member and a reed hook, said L The rotating rod is rotatably mounted in the inner cavity of the base, one end of the L-shaped rotating rod is connected with the movable end shell, and the other end of the L-shaped rotating rod is connected with one end of the self-locking rod, and the other end of the self-locking rod Extending through the upper surface of the housing to the outside of the housing, the "back"-shaped sliding member is slidably mounted on the bottom of the inner cavity of the base, and the "back"-shaped central portion is mounted with an elastic member for resetting the self-locking rod. The reed hook is fixedly mounted at the center of the bottom of the base, and the upper end of the reed hook is movably coupled to the L-shaped swivel.
A quick-change fuse according to claim 1, wherein: said transmission self-locking mechanism comprises a tab, a slider, a beam, a reset member, a stringer, a retaining ring and a lock member, one end of said stringer A sliding piece is fixedly mounted on the beam, the sliding piece is connected to one end of the piece, and the other end of the piece extends through the casing to the outside of the casing, and the longitudinal beam is sleeved with a resetting member and a fixing ring. And the fixing ring is fixedly mounted on the bottom of the housing, and the other end of the longitudinal beam is provided with a locking member.
A quick-change fuse according to claim 3, wherein: said lock member comprises a lock housing, a lock elastic member, a rotating shaft, a lever, a corrugated plate and a connecting post, said lock housing Inner cavity Corrugated plate is provided, the smooth surface side of the corrugated plate is provided with a locking member elastic member, the corrugated plate side is provided with a connecting post on the corrugated side, and the surface of the connecting post is engraved with a corrugation matched with the corrugated plate, The end of the corrugated plate is coupled to the shift lever by a rotating shaft that is mounted in the inner cavity of the housing.
A quick-change fuse according to claim 3, wherein: said lock member comprises a lock member housing, a lock member elastic member, a rotating shaft, a lever, an electromagnet, a contact contact member and a transmission plate, A drive plate is disposed in the inner cavity of the lock housing, and one side of the drive plate is provided with a lock elastic member, and the other side of the drive plate is fixedly mounted with a contact contact member, and the lock member housing is An electromagnet is fixedly mounted on the same side of the elastic member of the lock member in the inner cavity, and the electromagnet is connected to the electrical circuit through the contact contact member, and the end of the drive plate is rotated and mounted on the rotating shaft in the inner cavity of the housing. The lever is connected.