Fast fusing type fuse

Abstract

The invention relates to the technical field of fuses, and discloses a rapid fusing type fuse which comprises a base, a baffle is rotatably connected to the interior of the base, a rotating column is rotatably connected to the interior of the base, a rotating block is fixedly connected to the exterior of the rotating column, and a positioning block is arranged on the upper side of the rotating column. One end of the rotating column is fixedly connected with a rotating disc, the upper side of the positioning block is fixedly connected with a shell, the side wall of the base is provided with a reset assembly, the reset assembly is connected with the rotating disc, the reset assembly is connected with the positioning block, and a tension spring is arranged in the rotating column. When the current in the fuse is too large and the fusing assembly is fused, the circuit in the shell is cut off, the magnetic field disappears, and the clamping block is driven by the tension spring to retract into the rotating column, so that the fuse can quickly respond to the fusing reaction of the fusing assembly to pop out. And an effect of assisting installation personnel to quickly position a fusing part so as to replace a damaged fuse is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuses, in particular to a quick melting type fuse. BACKGROUND

[0002] The fuse is a basic circuit protection appliance based on the principle of current heat effect, which is widely used in low-voltage distribution systems, household appliances, automobile circuits and electronic equipment. The core function is to quickly cut off the circuit to protect the electrical equipment and the line from damage caused by overload current when the circuit is overloaded, short-circuited or other faults that cause the current to abnormally rise. When the circuit current is normal, the fuse only generates a small amount of heat to maintain stability. Once the current exceeds the rated value, the fuse melts due to the rapid accumulation of heat, forming a circuit break point to achieve "overload protection". If a short circuit occurs, the instantaneous super-large current will cause the fuse to melt instantly, quickly cutting off the fault circuit to avoid equipment burning or causing a fire.

[0003] The related fuse usually realizes the breaking through the melting of the fuse body, but after the fault occurs, its melting state is often difficult to judge directly, and the related structure lacks a mechanism for active tripping and state indication, resulting in the need to check the power off and replace the fuse inefficiently. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a quick melting type fuse, which solves the problem of the need to check the power off and replace the fuse inefficiently due to the related fuse usually realizing the breaking through the melting of the fuse body.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a quick melting type fuse, comprising a base, a baffle rotatably connected inside the base, a rotating column rotatably connected inside the base, a rotating block fixedly connected outside the rotating column, a positioning block arranged on the upper side of the rotating column, a rotating disc fixedly connected to one end of the rotating column, an outer shell fixedly connected to the upper side of the positioning block, a reset assembly arranged on the side wall of the base, the reset assembly being connected with the rotating disc and the positioning block, a tension spring arranged inside the rotating column, a clamping block arranged at one end of the tension spring, the clamping block being arranged inside the positioning block, the positioning block being arranged inside the base, a limiting assembly arranged outside the base, the limiting assembly being connected with the rotating disc, and a melting assembly arranged inside the outer shell.

[0006] By adopting the above technical solution, during installation, the groove inside the base is exposed by pulling the baffle, and then the outer shell is embedded into the base. At this time, the positioning block moves with the outer shell and engages with the outside of the rotating column, while simultaneously squeezing the reset component to cause elastic deformation. At this time, the fuse component inside the outer shell connects the circuit and generates a magnetic field. In the initial state, the locking block made of magnetic material retracts into the rotating column under the action of the tension spring. After the circuit is connected, the operator rotates the turntable through the limit component, causing the rotating column to rotate synchronously, causing the reset component to further store force and deform. At the same time, the locking block rotates with the rotating column to the position aligned with the groove inside the positioning block, and under the attraction of the magnetic field... The fuse quickly snaps into the groove, locking the outer casing and positioning block to ensure stable fixation and rapid installation. When excessive current causes the fuse assembly to blow, the circuit is cut off, the magnetic field disappears, and the locking block retracts into the rotating column under the action of the tension spring, releasing the restriction on the rotating column. Subsequently, the reset component releases its stored force, driving the turntable to reset under the constraint of the limit component, and causing the rotating column and rotating block to rotate together. Then, the rotating block pushes the positioning block, and the baffle is pushed open by the outer casing. At this time, the reset state of the turntable can be directly observed through the position change of the limit component, thus enabling the fuse to quickly pop out after a fault, and assisting the operator in quickly locating and replacing damaged parts.

[0007] Preferably, the reset assembly includes a torsion spring, one end of which is disposed on the side wall of the base, and a reset spring is disposed inside the base.

[0008] Preferably, the other end of the torsion spring is disposed inside the turntable, and the other end of the return spring is disposed on the lower side of the positioning block.

[0009] Preferably, the outer side of the rotating block is located below the positioning block, and the top end of the outer shell is located below the baffle.

[0010] Preferably, the limiting component includes a slide rail, the slide rail being fixedly connected to the outside of the base, and a slider being fixedly connected to the inside of the turntable, the slider being disposed inside the slide rail.

[0011] Preferably, the fuse assembly includes a first fuse element, which is externally fixedly connected to the inside of the housing, and a second fuse element is fixedly connected to the inside of the housing.

[0012] Preferably, a lubrication tube is fixedly connected to the outside of the first fuse element, the second fuse element is fixedly connected to the inside of the lubrication tube, a connecting block is slidably connected to the side wall of the first fuse element, a drive spring is provided inside the lubrication tube, and one end of the drive spring is located inside the connecting block.

[0013] Preferably, the lubrication pipe is disposed outside the housing, and the connecting block is slidably connected to the outside of the second fusible link.

[0014] Preferably, the inside of the lubricating pipe is provided with a liquid storage bin, and the inside of the liquid storage bin is filled with electrical insulating oil.

[0015] Preferably, the driving spring is made of nickel-based high-temperature memory alloy.

[0016] Working principle: the inside cavity of the base is exposed by pulling the baffle, and the shell is embedded into the base; then the shell drives the positioning block to be clamped to the outside of the rotating column, and the reset spring in the reset assembly is extruded to be deformed in energy storage; then the fuse assembly generates a magnetic field by being electrified, the operator rotates the rotating disc through the limiting assembly to drive the rotating column to rotate, so that the torsional spring stores energy, and the clamping block made of magnetic material in the rotating column is clamped into the groove of the positioning block under the adsorption of the magnetic field, so that the locking is realized, and the fast and stable installation is completed; in the normal working state, the fuse assembly is kept electrified, the magnetic field keeps the clamping block in the locked state; the reset assembly is in the elastic energy storage state, but cannot be reset due to the limitation of the clamping block, and the baffle keeps closed, so that the whole device is in the state of structural sealing and electrical connection; When the current is overloaded, the fuse piece one and the fuse piece two are fused, the circuit is disconnected, and the magnetic field disappears; then the clamping block is retracted under the action of the tension spring, and the locking is released; then the torsional spring quickly drives the rotating disc and the rotating column to reset, the rotating block lifts the positioning block to slide upward, and the reset spring releases the stored energy at the same time, and the shell pushes the baffle to pop out of the base; at the same time, the insulating oil in the lubricating pipe provides arc extinguishing and lubricating effects, ensures complete fusing, and the reset rotation of the rotating disc can be directly observed through the limiting assembly, so that the fast response, safe tripping and fault state visualization of the fuse are realized. When a large amount of heat is generated in the shell due to overcurrent, the heat accumulates in the fuse piece one, the fuse piece two and the connecting block, and is quickly conducted to the driving spring; the driving spring is made of nickel-based high-temperature memory alloy material, and deforms and extends under the action of high temperature, so as to push the connecting block to move upward, so that the connecting block is separated from the fuse piece two, the circuit is disconnected, and then the fuse pops out; at the same time, the electrical insulating oil stored in the lubricating pipe lubricates the surface of the fuse piece, and forms an insulating arc extinguishing environment in the process of disconnection, so as to prevent incomplete fusing or arc of the fuse, and ensure the safe operation and ejection of the fuse.

[0017] The present application provides a quick fusing type fuse. The fuse has the following beneficial effects: 1、The quick fusing type fuse of the present application, when the inside current of the fuse is too large to cause the fusing component to fuse, the inside circuit of the shell is cut off, the magnetic field disappears, the clamping block is retracted into the inside of the rotating column under the driving of the tension spring, and the movement of the rotating column is no longer restricted, at the same time, the reset component is reset, then the reset component drives the rotating disc to rotate under the restriction of the limiting component, and the rotating column is reset synchronously under the driving of the rotating disc, so that the fuse can quickly respond to the fusing reaction of the fusing component and pop up, and the effect of quickly locating the fusing part by the installer to replace the damaged fuse can be achieved.

[0018] 2、The quick fusing type fuse of the present application, by pulling the baffle to expose the groove inside the base, then inserting the shell into the inside of the base, and then the positioning block is clamped on the outside of the rotating column under the driving of the shell, at the same time, the positioning block extrudes the reset component to cause the reset component to elastically deform, at this time, the inside fusing component of the shell connects the circuit and generates a magnetic field, so that the effects of keeping the fuse stable and quickly installing can be achieved.

[0019] 3、The quick fusing type fuse of the present application, when the inside circuit current of the shell is too large, the heat of the fusing component one, the fusing component two and the connecting block is accumulated, at this time, the heat is conducted to the driving spring, the driving spring is made of nickel-based high-temperature memory alloy, and will stretch when affected by high temperature, at this time, the driving spring will lift the connecting block, so that the effects of avoiding incomplete fusing of the fusing component one and the fusing component two and burning of the fuse, and ensuring the pop-up and normal operation of the fuse can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the quick fusing type fuse proposed by the present application; Figure 2 It is a shell inside structure sectional view schematic diagram of the quick fusing type fuse proposed by the present application; Figure 3 It is a rotating column inside structure sectional view schematic diagram of the quick fusing type fuse proposed by the present application; Figure 4 It is a rotating block local structure schematic diagram of the quick fusing type fuse proposed by the present application; Figure 5 It is a slide rail local structure schematic diagram of the quick fusing type fuse proposed by the present application; Figure 6 It is a base inside structure sectional view schematic diagram of the quick fusing type fuse proposed by the present application; Figure 7 It is a lubricating pipe inside structure schematic diagram of the quick fusing type fuse proposed by the present application; Figure 8 It is a connecting block inside structure schematic diagram of the quick fusing type fuse proposed by the present application.

[0021] Wherein, 1, base; 2, baffle; 3, shell; 4, positioning block; 5, rotating column; 6, rotating block; 7, reset component; 71, torsional spring; 72, reset spring; 8, tension spring; 9, clamping block; 10, limiting component; 101, sliding rail; 102, sliding block; 11, rotating disc; 12, fusing component; 121, fusing component one; 122, fusing component two; 13, lubricating pipe; 14, connecting block; 15, drive spring; 16, liquid storage bin. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described clearly and completely below with reference to the drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 3 The embodiment of the present application provides a quick fusing type fuse, which comprises a base 1, a baffle 2 is rotatably connected inside the base 1, a rotating column 5 is rotatably connected inside the base 1, a rotating block 6 is fixedly connected outside the rotating column 5, a positioning block 4 is arranged on the upper side of the rotating column 5, a rotating disc 11 is fixedly connected to one end of the rotating column 5, a shell 3 is fixedly connected to the upper side of the positioning block 4, a reset component 7 is arranged on the side wall of the base 1, the reset component 7 is connected with the rotating disc 11, the reset component 7 is connected with the positioning block 4, a tension spring 8 is arranged inside the rotating column 5, a clamping block 9 is arranged at one end of the tension spring 8, the clamping block 9 is arranged inside the positioning block 4, the positioning block 4 is arranged inside the base 1, a limiting component 10 is arranged outside the base 1, the limiting component 10 is connected with the rotating disc 11, and a fusing component 12 is arranged inside the shell 3.

[0024] Specifically, by pulling the baffle 2 to expose the groove in the base 1, then the shell 3 is inserted into the inside of the base 1, and then the positioning block 4 is clamped on the outside of the rotating column 5 under the action of the shell 3, while the positioning block 4 extrudes the reset component 7 to make the reset component 7 elastically deformed, at this time the inside of the shell 3 is connected to the circuit and generates a magnetic field, and the shell 3 is made of insulating material to avoid electric shock, and the clamping block 9 is made of magnetic material, and the original state is shrunk in the inside of the rotating column 5 under the action of the tension spring 8, when the circuit is connected, the installer rotates the rotating disc 11 by a certain angle through the limiting component 10, and the rotating column 5 rotates synchronously under the action of the rotating disc 11, at this time the reset component 7 is deformed under the action of the rotating disc 11 to store energy, and the clamping block 9 is aligned with the groove in the positioning block 4 under the action of the rotating column 5, and then the clamping block 9 is clamped into the groove of the positioning block 4 under the action of the magnetic field, thereby locking the shell 3 and the positioning block 4, so that the effect of keeping the fuse stable and fast installation can be achieved. When the fuse inside the current is too large and the fuse component 12 is fused, the circuit inside the shell 3 is cut off, the magnetic field disappears, the clamping block 9 is retracted into the inside of the rotating column 5 under the action of the tension spring 8, and the movement of the rotating column 5 is no longer limited, and the reset component 7 resets, and then the reset component 7 drives the rotating disc 11 to rotate under the action of the limiting component 10, and the rotating column 5 resets synchronously under the action of the rotating disc 11, at this time the rotating block 6 rotates synchronously under the action of the rotating column 5, and then the rotating block 6 lifts the positioning block 4 to slide along the inside of the base 1, in this process the reset component 7 resets and synchronously lifts the positioning block 4 to slide, at this time the baffle 2 is opened by the shell 3, and the rotating condition of the rotating disc 11 can be quickly observed through the limiting component 10, so that the effect of the fuse quickly responding to the fuse reaction of the fuse component 12 to pop out and assisting the installer to quickly locate the fuse part to replace the damaged fuse can be achieved.

[0025] Referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 4 , the reset component 7 includes a torsion spring 71, one end of the torsion spring 71 is arranged on the side wall of the base 1, and the inside of the base 1 is provided with a reset spring 72; the other end of the torsion spring 71 is arranged in the inside of the rotating disc 11, and the other end of the reset spring 72 is arranged on the lower side of the positioning block 4.

[0026] Specifically, the torsion spring 71 stores energy when the fuse is installed, and resets to rotate when the fuse is fused; and the reset spring 72 is extruded when the positioning block 4 is installed, and resets to push the positioning block 4 back when the fuse is fused.

[0027] Referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 4 , the rotating block 6 is arranged on the lower side of the positioning block 4, and the top end of the shell 3 is arranged on the lower side of the baffle 2.

[0028] Specifically, the rotating block 6 is used to lift the positioning block 4 to assist the fuse to pop out, and the baffle 2 is used to keep the sealing of the whole device, and press the top end of the shell 3 to keep the fuse stable.

[0029] Referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 5 The limiting assembly 10 comprises a sliding rail 101, the outer portion of the sliding rail 101 is fixedly connected to the outer portion of the base 1, and the inner portion of the rotating disc 11 is fixedly connected with a sliding block 102, and the outer portion of the sliding block 102 is arranged in the inner portion of the sliding rail 101.

[0030] Specifically, the sliding block 102 rotates synchronously under the driving of the rotating disc 11, and the sliding rail 101 is used to limit the rotating range of the sliding block 102, so that the sliding rail 101 can limit the rotating range of the rotating disc 11 and the rotating column 5.

[0031] Referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 7 The fuse assembly 12 comprises a fuse piece one 121, the outer portion of the fuse piece one 121 is fixedly connected to the inner portion of the shell 3, and the inner portion of the shell 3 is fixedly connected with a fuse piece two 122.

[0032] Specifically, when the internal current of the fuse is too high, the heat is accumulated in the inner portions of the fuse piece one 121 and the fuse piece two 122, so that the fuse piece one 121 and the fuse piece two 122 are both fused, and the internal circuit of the fuse is interrupted.

[0033] Referring to the accompanying drawings Figure 2 , the accompanying drawings Figure 7 and the accompanying drawings Figure 8 The outer portion of the fuse piece one 121 is fixedly connected with a lubricating pipe 13, the inner portion of the lubricating pipe 13 is fixedly connected to the outer portion of the fuse piece two 122, the side wall of the fuse piece one 121 is slidingly connected with a connecting block 14, the inner portion of the lubricating pipe 13 is provided with a driving spring 15, one end of the driving spring 15 is arranged in the inner portion of the connecting block 14; the outer portion of the lubricating pipe 13 is arranged outside the shell 3, and the outer portion of the connecting block 14 is slidingly connected to the outer portion of the fuse piece two 122; the inner portion of the lubricating pipe 13 is provided with a liquid storage bin 16, and the lubricating pipe 13 is filled with electrical insulating oil in the inner portion of the liquid storage bin 16; the driving spring 15 is made of nickel-based high-temperature memory alloy.

[0034] Specifically, when the circuit inside the shell 3 has too much current, the heat of the fuse 121, the fuse 122 and the connecting block 14 is accumulated, and then the heat is conducted to the driving spring 15 made of nickel-based high-temperature memory alloy, which will be stretched when affected by high temperature. At this time, the driving spring 15 will lift the connecting block 14, and the connecting block 14 will no longer contact the fuse 122, so that the circuit is disconnected, and then the fuse is ejected. At the same time, the electric insulating oil in the lubricating pipe 13 lubricates the surfaces of the fuse 121 and the fuse 122 and provides an arc-extinguishing environment, so that the fuse 121 and the fuse 122 can be completely fused, and the fuse can be prevented from burning, and the effect of ensuring the ejection and normal operation of the fuse can be achieved.

[0035] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A fast blow type fuse characterized in that, The utility model provides a kind of rotary switch, including base (1), the inside rotation of base (1) is connected with baffle (2), the inside rotation of base (1) is connected with rotating column (5), the outside fixed connection of rotating column (5) is connected with rotating block (6), the upper side of rotating column (5) is provided with positioning block (4), one end of rotating column (5) is fixedly connected with rotating disc (11), the upper side of positioning block (4) is fixedly connected with shell (3), the side wall of base (1) is provided with reset component (7), reset component (7) is connected with rotating disc (11), reset component (7) is connected with positioning block (4), the inside of rotating column (5) is provided with tension spring (8), one end of tension spring (8) is provided with clamping block (9), the outside of clamping block (9) is arranged in the inside of positioning block (4), the outside of positioning block (4) is arranged in the inside of base (1), the outside of base (1) is provided with limiting component (10), limiting component (10) is connected with rotating disc (11), the inside of shell (3) is provided with fusing component (12).

2. A fast melt type fuse according to claim 1, wherein The reset component (7) includes a torsion spring (71), one end of the torsion spring (71) is arranged on the side wall of the base (1), and the inside of the base (1) is provided with a reset spring (72).

3. A fast melt type fuse according to claim 2, wherein The other end of the torsion spring (71) is arranged in the inside of the rotating disc (11), and the other end of the reset spring (72) is arranged on the lower side of the positioning block (4).

4. A fast melt type fuse according to claim 1, wherein The outside of the rotating block (6) is arranged on the lower side of the positioning block (4), and the top end of the shell (3) is arranged on the lower side of the baffle (2).

5. A fast melt type fuse according to claim 1, wherein The limiting component (10) includes a slide rail (101), the outside of the slide rail (101) is fixedly connected to the outside of the base (1), the inside of the rotating disc (11) is fixedly connected with a sliding block (102), and the outside of the sliding block (102) is arranged in the inside of the slide rail (101).

6. A fast melt type fuse according to claim 1, wherein The fusing component (12) includes a fusing component one (121), the outside of the fusing component one (121) is fixedly connected to the inside of the shell (3), and the inside of the shell (3) is fixedly connected with a fusing component two (122).

7. A fast melt type fuse according to claim 6, wherein The outside of the fusing component one (121) is fixedly connected with a lubricating pipe (13), the outside of the fusing component two (122) is fixedly connected to the inside of the lubricating pipe (13), the side wall of the fusing component one (121) is slidingly connected with a connecting block (14), the inside of the lubricating pipe (13) is provided with a driving spring (15), and one end of the driving spring (15) is arranged in the inside of the connecting block (14).

8. A fast melt type fuse according to claim 7, wherein The outside of the lubricating pipe (13) is arranged on the outside of the shell (3), and the outside of the connecting block (14) is slidingly connected to the outside of the fusing component two (122).

9. A fast melt type fuse according to claim 7, wherein The inside of the lubricating pipe (13) is provided with a liquid storage bin (16), and the lubricating pipe (13) is filled with electrical insulating oil in the inside of the liquid storage bin (16).

10. A fast melt type fuse according to claim 7, wherein The driving spring (15) is made of nickel-based high-temperature memory alloy.

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