CN110752126A - Circuit overload protection and automatic resetting device - Google Patents
Circuit overload protection and automatic resetting device Download PDFInfo
- Publication number
- CN110752126A CN110752126A CN201911046911.7A CN201911046911A CN110752126A CN 110752126 A CN110752126 A CN 110752126A CN 201911046911 A CN201911046911 A CN 201911046911A CN 110752126 A CN110752126 A CN 110752126A
- Authority
- CN
- China
- Prior art keywords
- temperature sensing
- fixedly connected
- movable plate
- circuit
- fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/20—Electrothermal mechanisms with fusible mass
-
- 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
- H01H85/0241—Structural association of a fuse and another component or apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
Abstract
The invention relates to the technical field of circuit protection, and discloses a circuit overload protection and automatic reset device, wherein a temperature sensing block is arranged on the right side of a piston, a spring is arranged on the inner bottom wall of an inner shell, a fixing plate and a connecting plate are arranged in the inner shell, a fixing wheel is arranged on the left side of the fixing plate, a first contact point is arranged on the right side of a first supporting rod, a fixing rod and a second supporting rod are arranged on the inner top wall of the inner shell, a rotating shaft is arranged at the bottom of the fixing rod, a second contact point is arranged on the left side of the second supporting rod, and a fuse is arranged between the second contact point and the first contact point. When the circuit is overloaded, the piston pushes the temperature sensing block to move, the temperature sensing block pushes the lower section of the movable plate to move right through the connecting rod to drive the upper section of the movable plate to move upwards, the left side of the fuse moves downwards, the circuit is broken, when the temperature returns to be normal, the piston moves left, the temperature sensing block drives the movable plate to move left through the connecting rod, the movable plate drives the lug to move downwards, the fuse resets, and the circuit forms a passage.
Description
Technical Field
The invention relates to the technical field of circuit protection, in particular to a circuit overload protection and automatic reset device.
Background
Along with the rapid development of the times, people use electrical appliances, electronic products and the like more and more generally, and the electrical appliances and electronic products cannot be disconnected from a power supply, so that people pay more attention to the safety of the power supply, in order to ensure the safety of power utilization, people set overload current protection devices in circuits, the overload protection devices of common circuits all use fuses, when the current in the circuits exceeds rated current, the fuses are automatically fused, so that the safety of the circuits is protected, but the fuses can continue to work only by replacing new fuses after being fused, the operation is complex, and materials are wasted, so that a circuit overload protection and automatic resetting device is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a circuit overload protection and automatic reset device which has the advantages of simple operation for protecting the circuit safety and no material waste, and solves the problems of complex operation and fuse replacement.
(II) technical scheme
In order to realize the purposes of simple safe operation of the protection circuit and no material waste, the invention provides the following technical scheme: a circuit overload protection and automatic reset device comprises an outer shell, wherein an inner shell is fixedly connected to the right inner wall of the outer shell, a through hole is formed in the left side of the inner shell, a temperature sensing box is fixedly connected to the inner left wall of the inner shell, a piston is movably connected to the inner side of the temperature sensing box, a temperature sensing block is fixedly connected to the right side of the piston, a spring is fixedly connected to the inner bottom wall of the inner shell, a fixed plate and a connecting plate are fixedly connected to the inner side of the inner shell, a fixed wheel is fixedly connected to the left side of the fixed plate, a movable plate is movably connected to the inner side of the inner shell, a convex block is fixedly connected to the top of the movable plate, a groove is formed in the inner top wall of the inner shell, a sliding block is movably connected to the top of the groove, a first supporting rod is fixedly connected to the bottom, the inner wall of the inner shell is fixedly connected with a fixing rod and a second supporting rod, the bottom of the fixing rod is movably connected with a rotating shaft, the left side of the second supporting rod is fixedly connected with a second contact point, and a fuse is movably connected between the second contact point and the first contact point.
Preferably, the temperature sensing block is connected with the movable plate through a connecting rod, and the movable plate is pushed to move through the connecting rod.
Preferably, the movable plate is in a bent state.
Preferably, the rotating shaft is located in the middle of the fuse, and the rotating shaft is a fulcrum of the fuse.
Preferably, the temperature sensing block is inserted at the right side of the temperature sensing box and expands when heated.
Preferably, the fixed wheel is fixed at the bending position of the movable plate and used for fixing the movable plate.
Preferably, the bump is located at the bottom of the fuse, and the bump is an insulator.
Preferably, the right side of the connecting plate is connected with the bent part of the movable plate to fix the movable plate.
(III) advantageous effects
Compared with the prior art, the invention provides a circuit overload protection and automatic reset device, which has the following beneficial effects:
1. this circuit overload protection, when the circuit takes place to transship, the steam in the circuit passes through the through-hole and promotes the piston and move to the right, the piston promotes the temperature sensing piece and moves, the temperature sensing piece promotes the hypomere portion of fly leaf and moves to the right through the connecting rod and moves the extrusion spring, and drive the upper segment portion of fly leaf and shift up, the upper segment portion of fly leaf shifts up and drives the lug and shifts up, the lug promotes the fuse right side and shifts up, the pivot is the fulcrum of fuse, the left side of fuse moves down, circuit formation opens circuit, when the temperature resumes normally, the piston moves to the left, the temperature sensing piece drives the fly leaf through the connecting rod and moves to the left, the fly leaf drives the lug and moves down, the fuse resets, the circuit forms the route, when the circuit takes place to transship, can in time open circuit, protection circuit safety, and when the.
2. This circuit overload protection drives the pull rod through the pulling shell and moves to the left, and the pull rod drives first bracing piece and passes through the slider and move to the left in the spout, and first contact and fuse break, circuit formation open circuit, when maintaining or examining the circuit, the pulling shell just can break the circuit, prevents that the personnel from not breaking the direct maintenance of circuit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the overload circuit breaking structure of the present invention;
FIG. 3 is a schematic view of the maintenance circuit breaking structure of the present application;
fig. 4 is a schematic structural diagram of a part of the inner shell of the present invention.
In the figure: the temperature sensing device comprises a shell 1, a through hole 2, a temperature sensing box 3, a piston 4, a temperature sensing block 5, a spring 6, a movable plate 7, a fixed plate 8, a fixed wheel 9, a connecting plate 10, a convex block 11, a pull rod 12, a sliding chute 13, a sliding block 14, a first support rod 15, a first contact 16, a fuse 17, a fixed rod 18, a rotating shaft 19, a second support rod 20, a second contact 21 and an inner shell 22.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a circuit overload protection and automatic reset device comprises an outer shell 1, an inner shell 22 is fixedly connected to the right inner wall of the outer shell 1, a through hole 2 is formed in the left side of the inner shell 22, hot air enters the temperature sensing box 3 through the through hole 2, the temperature sensing box 3 is fixedly connected to the inner left wall of the inner shell 22, a piston 4 is movably connected to the inside of the temperature sensing box 3, a temperature sensing block 5 is fixedly connected to the right side of the piston 4, the temperature sensing block 5 is inserted into the right side of the temperature sensing box 3, the temperature sensing block 5 is connected to a movable plate 7 through a connecting rod, the movable plate 7 is pushed by the connecting rod to move, the temperature sensing block 5 is made of a material with thermal expansion and cold contraction, a spring 6 is fixedly connected to the inner bottom wall of the inner shell 22, the spring 6 is located on the right side of the movable plate 7 and located inside the, the right side of the connecting plate 10 is connected with the bent part of the movable plate 7, the movable plate 7 is fixed, the left side of the fixed plate 8 is fixedly connected with a fixed wheel 9, the fixed wheel 9 is fixed at the bent part of the movable plate 7, the movable plate 7 is fixed, the fixed plate 8 is used for fixing the fixed wheel 9 and the movable rod 7, the movable plate 7 is movably connected inside the inner shell 22, the movable plate 7 is in a bent state, the top of the movable plate 7 is fixedly connected with a convex block 11, the convex block 11 is positioned at the bottom of a fuse 17, the convex block 11 is an insulator, the inner top wall of the inner shell 22 is provided with a groove 13, the top of the groove 13 is movably connected with a sliding block 14, the bottom of the sliding block 14 is fixedly connected with a first supporting rod 15, the left side of the first supporting rod 15 is fixedly connected with a pull rod 12, the pull rod 12 is connected with the outer, the inner top wall of the inner shell 22 is fixedly connected with a fixing rod 18 and a second supporting rod 20, the bottom of the fixing rod 18 is movably connected with a rotating shaft 19, the rotating shaft 19 is located in the middle of the fuse 17, the rotating shaft 19 is a rotating fulcrum of the fuse 17, the left side of the second supporting rod 20 is fixedly connected with a second contact point 21, the second contact point 21 is connected with a circuit through a power line, and the fuse 17 is movably connected between the second contact point 21 and the first contact point 16.
The working principle is as follows: when the line is overloaded, the temperature in the line rises, hot air enters the temperature sensing box 3 through the through hole 2, the hot air pushes the piston 4 to move rightwards, the piston 4 pushes the temperature sensing block 5 to move rightwards, the temperature sensing block 5 expands when heated, the temperature sensing block 5 pushes the movable plate 7 to move through the connecting rod, the connecting rod pushes the movable plate 7 to rotate anticlockwise, the movable plate 7 moves to drive the bump 11 to move upwards, the bump 11 pushes the right side of the fuse 17 to move upwards, the left side of the fuse 17 moves downwards according to the lever principle because the rotating shaft 19 is the fulcrum of the fuse 17, the fuse 17 is disconnected with the first contact 16 and the second contact 21, the circuit is disconnected, meanwhile, the lower section part of the movable plate 7 moves rightwards to push the spring 6 to compress, when the temperature in the line returns to normal, the piston 4 moves leftwards to drive the temperature sensing block 5 to move leftwards, the temperature sensing block, the spring 6 moves leftwards to reset to drive the upper section of the movable plate 7 to move downwards, the movable plate 7 drives the lug 11 to move downwards, the right end of the fuse 17 moves downwards to drive the left end to move upwards, the fuse 17 is connected with the contact, a circuit forms a passage, when the circuit needs to be maintained, the shell 1 is pulled to move leftwards, the shell 1 drives the pull rod 12 to move leftwards, the pull rod 12 drives the first supporting rod 15 to move leftwards in the sliding groove 13, the first contact 16 is disconnected with the fuse 17, and the circuit forms an open circuit.
To sum up, in the circuit overload protection, when the circuit is overloaded, the hot gas in the circuit pushes the piston 4 to move right through the through hole 2, the piston 4 pushes the temperature sensing block 5 to move, the temperature sensing block 5 pushes the lower section of the movable plate 7 to move right through the connecting rod, the temperature sensing block 5 pushes the right section of the movable plate 7 to move right, the right section pushes the spring 6 to press and drive the upper section of the movable plate 7 to move up, the upper section of the movable plate 7 moves up to drive the bump 11 to move up, the bump 11 pushes the fuse 17 to move up right, the rotating shaft 19 is the fulcrum of the fuse 17, the left side of the fuse 17 moves down, the circuit forms an open circuit, when the temperature returns to normal, the piston 4 moves left, the temperature sensing block 5 drives the movable plate 7 to move left through the connecting rod, the movable plate 7 drives the bump 11 to move down, the fuse 17 resets, the circuit forms a path, when, the circuit overload protection device is simple to operate, the fuse 17 does not need to be replaced, the shell 1 is pulled to drive the pull rod 12 to move left, the pull rod 12 drives the first supporting rod 15 to move left in the sliding groove 13 through the sliding block 14, the first contact point 16 is disconnected with the fuse 17, the circuit is disconnected, when the circuit is maintained or checked, the shell 1 is pulled to disconnect the circuit, and personnel are prevented from directly maintaining the circuit without disconnecting the circuit.
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 (8)
1. The utility model provides a circuit overload protection and automatic re-setting device, includes shell (1), its characterized in that: the temperature sensing device is characterized in that an inner shell (22) is fixedly connected to the right inner wall of the outer shell (1), a through hole (2) is formed in the left side of the inner shell (22), a temperature sensing box (3) is fixedly connected to the inner left wall of the inner shell (22), a piston (4) is movably connected to the inside of the temperature sensing box (3), a temperature sensing block (5) is fixedly connected to the right side of the piston (4), a spring (6) is fixedly connected to the inner bottom wall of the inner shell (22), a fixing plate (8) and a connecting plate (10) are fixedly connected to the inside of the inner shell (22), a fixing wheel (9) is fixedly connected to the left side of the fixing plate (8), a movable plate (7) is movably connected to the inside of the inner shell (22), a convex block (11) is fixedly connected to the top of the movable plate (7), a groove (13) is formed in, the utility model discloses a fuse, including slider (14), the first bracing piece of bottom fixedly connected with (15) of slider (14), the left side fixedly connected with pull rod (12) of first bracing piece (15), the first contact point of right side fixedly connected with (16) of first bracing piece (15), interior roof fixedly connected with dead lever (18) and second bracing piece (20) of inner shell (22), the bottom swing joint of dead lever (18) has pivot (19), the left side fixedly connected with second contact point (21) of second bracing piece (20), swing joint has fuse (17) between second contact point (21) and first contact point (16).
2. A circuit overload protection and automatic reset device according to claim 1, wherein: the temperature sensing block (5) is connected with the movable plate (7) through a connecting rod.
3. A circuit overload protection and automatic reset device according to claim 1, wherein: the movable plate (7) is in a bent state.
4. A circuit overload protection and automatic reset device according to claim 1, wherein: the rotating shaft (19) is located in the middle of the fuse.
5. A circuit overload protection and automatic reset device according to claim 1, wherein: the temperature sensing block (5) is inserted at the right side of the temperature sensing box (3).
6. A circuit overload protection and automatic reset device according to claim 1, wherein: the fixed wheel (9) is fixed at the bending position of the movable plate (7).
7. A circuit overload protection and automatic reset device according to claim 1, wherein: the lug (11) is positioned at the bottom of the fuse (17).
8. A circuit overload protection and automatic reset device according to claim 1, wherein: the right side of the connecting plate (10) is connected with the bent part of the movable plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046911.7A CN110752126A (en) | 2019-10-30 | 2019-10-30 | Circuit overload protection and automatic resetting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911046911.7A CN110752126A (en) | 2019-10-30 | 2019-10-30 | Circuit overload protection and automatic resetting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110752126A true CN110752126A (en) | 2020-02-04 |
Family
ID=69281343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911046911.7A Withdrawn CN110752126A (en) | 2019-10-30 | 2019-10-30 | Circuit overload protection and automatic resetting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752126A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038128A (en) * | 2020-09-08 | 2020-12-04 | 金华表征电子科技有限公司 | Detection protection and stable power supply system of circuit |
| CN114360981A (en) * | 2021-12-22 | 2022-04-15 | 吴雨虹 | Prevent impaired fuse of circuit protection of fusible core |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953319Y (en) * | 2006-09-29 | 2007-09-26 | 刘军 | Repeatedly using temperature control fuse |
| DE102017119285A1 (en) * | 2017-02-01 | 2018-08-02 | Dehn + Söhne Gmbh + Co. Kg | Triggerable fuse for low voltage applications |
| CN208400781U (en) * | 2018-04-05 | 2019-01-18 | 骆瑞刚 | A kind of liquid with overload current rises formula temperature controller |
| CN109994347A (en) * | 2019-04-08 | 2019-07-09 | 曹欢 | It is a kind of it is anti-short circuit restore fuse |
-
2019
- 2019-10-30 CN CN201911046911.7A patent/CN110752126A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200953319Y (en) * | 2006-09-29 | 2007-09-26 | 刘军 | Repeatedly using temperature control fuse |
| DE102017119285A1 (en) * | 2017-02-01 | 2018-08-02 | Dehn + Söhne Gmbh + Co. Kg | Triggerable fuse for low voltage applications |
| CN208400781U (en) * | 2018-04-05 | 2019-01-18 | 骆瑞刚 | A kind of liquid with overload current rises formula temperature controller |
| CN109994347A (en) * | 2019-04-08 | 2019-07-09 | 曹欢 | It is a kind of it is anti-short circuit restore fuse |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112038128A (en) * | 2020-09-08 | 2020-12-04 | 金华表征电子科技有限公司 | Detection protection and stable power supply system of circuit |
| CN112038128B (en) * | 2020-09-08 | 2021-04-23 | 广东必达电器有限公司 | Detection protection and stable power supply system of circuit |
| CN114360981A (en) * | 2021-12-22 | 2022-04-15 | 吴雨虹 | Prevent impaired fuse of circuit protection of fusible core |
| CN114360981B (en) * | 2021-12-22 | 2023-12-01 | 国网浙江省电力有限公司杭州供电公司 | Fuse for protecting circuit against fuse core damage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200204 |
|
| WW01 | Invention patent application withdrawn after publication |