CN113053701A

CN113053701A - Automatic recovery fuse

Info

Publication number: CN113053701A
Application number: CN202110400927.4A
Authority: CN
Inventors: 丁平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-06-29

Abstract

The invention discloses an automatic recovery fuse, which comprises a protective shell and a mounting shell, wherein the mounting shell is fixedly arranged on the lower end surface of the protective shell, two conducting strips are symmetrically and fixedly arranged on the inner wall of the protective shell, a conducting rod is vertically inserted into the center of each conducting strip, the conducting rods are slidably connected into the conducting strips, the lower end surfaces of the two conducting rods are fixedly provided with a first conducting plate together, the first conducting plate is slidably connected into the inner wall of the protective shell, the center of the upper end surface of the first conducting plate is fixedly connected with a memory metal spring, the upper end surface of the memory metal spring is fixedly provided with a second conducting plate, the second conducting plate is fixedly arranged on the inner wall of the protective shell, and the upper end surface of the protective shell is fixedly provided with a second connector lug. The invention avoids replacing the fuse wire manually, ensures the personal safety of people and brings convenience to people.

Description

Automatic recovery fuse

Technical Field

The invention relates to the technical field of circuit breaking protectors, in particular to an automatic recovery fuse protector.

Background

The fuse is a device for protecting a circuit commonly used in a power system to prevent the circuit from being damaged due to excessive current in the power system, and the current fuse mainly comprises a fuse type fuse; in such fuse type fuses, once blown, the entire fuse needs to be replaced, which is dangerous and inconvenient for the residents of the residential area.

In order to solve the above problems, the present invention proposes an automatic recovery fuse.

Disclosure of Invention

The invention aims to solve the problems that the current fuse mainly comprises a fuse type fuse in the prior art; in such fuse type fuses, once blown, the entire fuse needs to be replaced, which is a dangerous and inconvenient defect for residential residents, and thus, an automatic recovery fuse is proposed.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic recovery fuse comprises a protective shell and a mounting shell, wherein the mounting shell is fixedly arranged on the lower end face of the protective shell, two conductive plates are symmetrically and fixedly arranged on the inner wall of the protective shell, a conductive rod is vertically inserted in the center of each conductive plate, the conductive rods are slidably connected into the conductive plates, the lower end faces of the two conductive rods are fixedly provided with a first conductive plate together, the first conductive plate is slidably connected into the inner wall of the protective shell, the center of the upper end face of the first conductive plate is fixedly connected with a memory metal spring, the upper end face of the memory metal spring is fixedly provided with a second conductive plate, the second conductive plate is fixedly arranged on the inner wall of the protective shell, the upper end face of the protective shell is fixedly provided with a second connector lug, the second connector lug is electrically connected with the second conductive plate, and two third connector lugs are symmetrically and fixedly arranged on the side wall of the protective shell, every No. three connector lug all with conducting strip electric connection, be provided with two sets of mechanisms that subtract class in the installation shell, symmetry fixed mounting has two loading boards, two on the inner wall of installation shell the up end of loading board fixed mounting respectively has two reset spring, two the common fixed mounting of up end of reset spring has the clamp plate, the central department fixed mounting of the lower terminal surface of clamp plate has the insulation board.

Every group subtract and flow mechanism all includes two conducting blocks, insulating telescopic link and insulating spring, two insulating telescopic link symmetry fixed mounting is on the inner wall of installation shell, two the conducting block is fixed mounting respectively in the relative one end of two insulating telescopic links, every insulating spring all overlaps and establishes on insulating telescopic link.

Preferably, one end fixed mounting of insulating spring is on the inner wall of installation shell, the other end fixed mounting of insulating spring is on the lateral wall of conducting block, su be cavity setting in the insulating telescopic link, be provided with electrically conductive connection piece in the insulating telescopic link, the symmetry is provided with two connectors No. one on the lateral wall of installation shell, every connector all with electrically conductive connection piece electric connection.

Preferably, fixed mounting has alarm device on the lateral wall of protective housing, it has the trigger piece with alarm device assorted to inlay in the inner wall of protective housing, trigger piece and alarm device electric connection.

Compared with the prior art, the invention has the beneficial effects that:

when more and more electric appliances are used, the current in the second conducting plate is increased, the temperature of the second conducting plate is increased, the second conducting plate continues to have side length, the first conducting plate is further pushed to move downwards, when the current passing through the memory metal spring reaches the maximum load of a household circuit, the first conducting plate just passes through the touch piece and continues to slide downwards, the upper end of the conducting rod just slides into the conducting piece at the moment, good electrification is still kept between the conducting plate and the first conducting plate through the conducting rod, at the moment, the first conducting plate is conducted with the alarm device through the touch piece, the alarm device gives an alarm sound, and if a family timely hears the alarm sound, the electric appliances can be immediately turned off to reduce the load intensity of the circuit; if the family does not hear the alarm sound, the memory metal spring can promote the current conducting plate to continue downstream and extrude the clamp plate, promote the insulation board downstream when making the clamp plate compress reset spring, the conducting rod breaks away from with the conducting plate this moment, the electric current in the circuit is cut off, the whole outage of electrical apparatus in the family, play certain guard action to the family's circuit, after the outage, each electrical apparatus switch self-closing, the temperature of No. two current conducting plates and memory metal spring can gradually cool off and shorten and reset, make the current conducting plate upward movement once more and put through with the conducting plate once more through the conducting rod, the artifical fuse of changing has been avoided, people's personal safety has been guaranteed, also give people and brought the convenience.

Drawings

Fig. 1 is a schematic front structural diagram of an automatic recovery fuse according to the present invention;

FIG. 2 is an enlarged front view of an insulating telescoping rod in an automatic recovery fuse according to the present invention;

fig. 3 is a top view of a conductive tab of a self-healing fuse according to the present invention.

In the figure: 1 insulation board, 2 insulating telescopic links, 3 installation shell, 4 loading boards, No. 5 connectors, 6 reset springs, No. 7 conducting plates, 8 clamp plates, 9 touch pieces, 10 alarm devices, 11 conducting plates, 12 memory metal springs, 13 conducting rods, No. 14 conducting plates, No. 15 connector lugs, No. 16 protective housings, 17 conducting blocks, 18 conducting connecting pieces, 19 insulating springs and No. 20 connector lugs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-3, an automatic recovery fuse, includes a protective shell 16 and a mounting shell 3, the mounting shell 3 is fixedly installed on a lower end surface of the protective shell 16, two conductive plates 11 are symmetrically and fixedly installed on an inner wall of the protective shell 16, a conductive rod 13 is vertically inserted into a center of each conductive plate 11, the conductive rods 13 are slidably connected in the conductive plates 11, a first conductive plate 7 is fixedly installed on lower end surfaces of the two conductive rods 13, the first conductive plate 7 is slidably connected in an inner wall of the protective shell 16, a memory metal spring 12 is fixedly connected at a center of an upper end surface of the first conductive plate 7, a second conductive plate 14 is fixedly installed on an upper end surface of the memory metal spring 12, the second conductive plate 14 is fixedly installed on an inner wall of the protective shell 16, a second connector lug 15 is fixedly installed on an upper end surface of the protective shell 16, the second connector lug 15 is electrically connected with, two No. three connector lugs 20 are symmetrically and fixedly mounted on the side wall of the protective shell 16, each No. three connector lug 20 is electrically connected with the conductive sheet 11, two sets of flow reducing mechanisms are arranged in the mounting shell 3, two bearing plates 4 are symmetrically and fixedly mounted on the inner wall of the mounting shell 3, two reset springs 6 are fixedly mounted on the upper end faces of the two bearing plates 4 respectively, a pressing plate 8 is fixedly mounted on the upper end faces of the two reset springs 6 jointly, and an insulating plate 1 is fixedly mounted at the center of the lower end face of the pressing plate 8.

Each current reducing mechanism comprises two conducting blocks 17, insulating telescopic rods 2 and insulating springs 19, the two insulating telescopic rods 2 are symmetrically and fixedly installed on the inner wall of the installation shell 3, the two conducting blocks 17 are respectively and fixedly installed at one ends, opposite to the two insulating telescopic rods 2, of the two insulating telescopic rods 2, and each insulating spring 19 is sleeved on the insulating telescopic rod 2; one end of an insulating spring 19 is fixedly arranged on the inner wall of the mounting shell 3, the other end of the insulating spring 19 is fixedly arranged on the side wall of the conductive block 17, the insulating telescopic rod 2 is hollow, a conductive connecting sheet 18 is arranged in the insulating telescopic rod 2, two first connectors 5 are symmetrically arranged on the side wall of the mounting shell 3, and each first connector 5 is electrically connected with the conductive connecting sheet 18; the alarm device 10 is fixedly mounted on the side wall of the protective shell 16, the touch sheet 9 matched with the alarm device 10 is embedded in the inner wall of the protective shell 16, and the touch sheet 9 is electrically connected with the alarm device 10.

In the invention, when the electric appliance is used at home, the current flows from the third connector lug 20 to the electric appliance in use through the second connector lug 15, the second conducting plate 14, the memory metal spring 12, the first conducting plate 7 and the conducting rod 13, when the used electric appliance is increased, the current flowing through the second conducting plate 14 and the memory metal spring 12 is increased, and the heat formula Q is I²R can be known that the resistance R of the second conducting plate 14 is not changedWhen the current I passing through the second conducting plate 14 is increased, the temperature generated by the second conducting plate 14 is increased, the memory metal spring 12 is made of a good heat-conducting and electricity-conducting metal material, and then the temperature of the memory metal spring 12 is increased, when the temperature of the memory metal spring 12 reaches the deformation temperature of 70 ℃, the memory metal spring 12 is continuously extended from a softer martensite phase and converted into a hard phase, so that the length of the memory metal spring is increased, under the action of the tension, the memory metal spring 12 pushes the first conducting plate 7 to move downwards, and the first conducting plate 7 is separated from the conducting plate 11 and slides downwards for a certain distance along the side wall of the protective shell 16;

when more and more electric appliances are used, the current in the second conducting plate 14 is increased, the temperature of the second conducting plate 14 is increased, the second conducting plate 14 is long, the first conducting plate 7 is pushed to move downwards continuously, when the current passing through the memory metal spring 12 reaches the maximum load of a household circuit, the first conducting plate 7 just passes through the touch piece 9 and slides downwards continuously, the upper end of the conducting rod 13 just slides into the conducting plate 11, good electrification is still kept between the conducting plate 11 and the first conducting plate 7 passing through the conducting rod 13, the first conducting plate 7 is conducted with the alarm device 10 through the touch piece 9, the alarm device 10 gives an alarm, and if a family timely hears an alarm sound, the electric appliances can be turned on immediately to reduce the load intensity of the circuit; if the family does not hear the alarm sound, the memory metal spring 12 can push the first current-conducting plate 7 to continue to move downwards and extrude the pressure plate 8, so that the pressure plate 8 pushes the insulating plate 1 to move downwards while compressing the reset spring 6, at the moment, the current-conducting rod 13 is separated from the conducting plate 11, the current in the circuit is cut off, all the household electrical appliances are powered off, a certain protection effect is achieved on the household circuit, after the power is cut off, switches of the electrical appliances are automatically closed, the temperature of the second current-conducting plate 14 and the memory metal spring 12 can be gradually cooled, the reset is shortened, the first current-conducting plate 7 moves upwards again and is connected with the conducting plate 11 again through the current-conducting rod 13, the manual fuse replacement is avoided, the personal safety of people is guaranteed, and convenience is brought to;

two sets of conducting blocks 17 are connected with two high-power electrical apparatus commonly used in the family respectively, can promote insulation board 1 of the center department of clamp plate 8 lower extreme to cut off two sets of conducting blocks 17 fast when current conducting plate 7 moves and part for high-power electrical apparatus stop work and then play the effect of protection circuit, after the outage, each electrical apparatus switch self-closing, clamp plate 8 is along with a current conducting plate 7 upward movement under the effect of reset spring 6 elasticity, reset and make two sets of current conducting plates 7 reset once more.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides an automatic fuse that resumes, includes protective housing (16) and installation shell (3), its characterized in that, installation shell (3) fixed mounting is at the lower terminal surface of protective housing (16), symmetry fixed mounting has two conducting strips (11) on the inner wall of protective housing (16), every the equal vertical interlude in center of conducting strip (11) has conducting rod (13), conducting rod (13) sliding connection is in conducting strip (11), two the common fixed mounting of the lower terminal surface of conducting rod (13) has a current conducting plate (7), current conducting plate (7) sliding connection is in the inner wall of protective housing (16), the center department fixed connection of current conducting plate (7) up end has memory metal spring (12), the up end fixed mounting of memory metal spring (12) has No. two current conducting plates (14), No. two current conducting plate (14) fixed mounting is on the inner wall of protective housing (16), up end fixed mounting of protective housing (16) has No. two connector lug (15), No. two connector lug (15) and No. two current conducting plate (14) electric connection, symmetry fixed mounting has two No. three connector lug (20), every on the lateral wall of protective housing (16) No. three connector lug (20) all with conducting strip (11) electric connection, be provided with two sets of mechanisms that subtract streams in installation shell (3), symmetry fixed mounting has two loading boards (4), two on the inner wall of installation shell (3) the up end of loading board (4) is fixed mounting respectively has two reset spring (6), two the common fixed mounting of up end of reset spring (6) has clamp plate (8), the center department fixed mounting of the lower terminal surface of clamp plate (8) has insulation board (1).

2. The automatic recovery fuse according to claim 1, wherein each set of current reducing mechanism comprises two conductive blocks (17), two insulating telescopic rods (2) and two insulating springs (19), the two insulating telescopic rods (2) are symmetrically and fixedly mounted on the inner wall of the mounting shell (3), the two conductive blocks (17) are respectively and fixedly mounted at the opposite ends of the two insulating telescopic rods (2), and each insulating spring (19) is sleeved on the insulating telescopic rod (2).

3. The automatic recovery fuse protector as claimed in claim 2, wherein one end of the insulating spring (19) is fixedly mounted on the inner wall of the mounting shell (3), the other end of the insulating spring (19) is fixedly mounted on the side wall of the conductive block (17), the insulating telescopic rod (2) is hollow, a conductive connecting piece (18) is arranged in the insulating telescopic rod (2), two first connectors (5) are symmetrically arranged on the side wall of the mounting shell (3), and each first connector (5) is electrically connected with the conductive connecting piece (18).

4. An automatic recovery fuse as claimed in claim 1, characterized in that the alarm device (10) is fixedly mounted on the side wall of the protective casing (16), a touch sheet (9) matched with the alarm device (10) is embedded in the inner wall of the protective casing (16), and the touch sheet (9) is electrically connected with the alarm device (10).