CN107564766B - Non-self-resetting thermal cutter - Google Patents
Non-self-resetting thermal cutter Download PDFInfo
- Publication number
- CN107564766B CN107564766B CN201711018050.2A CN201711018050A CN107564766B CN 107564766 B CN107564766 B CN 107564766B CN 201711018050 A CN201711018050 A CN 201711018050A CN 107564766 B CN107564766 B CN 107564766B
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- China
- Prior art keywords
- pole
- fixed
- column
- action reed
- clamping block
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- 235000014676 Phragmites communis Nutrition 0.000 claims description 45
- 230000009471 action Effects 0.000 claims description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 42
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 229910052573 porcelain Inorganic materials 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims 2
- 239000007788 liquid Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention relates to a thermal cut-off device used in a liquid heater, in particular to a non-self-resetting thermal cut-off device, which solves the problem of potential safety hazards of dry burning of the liquid heater.
Description
Technical Field
The invention relates to a thermal cut-off used in a liquid heater, in particular to a non-self-resetting thermal cut-off.
Background
The existing thermal cut-off device cuts off the power supply after adopting the thermal bimetallic strip to act, repeatedly burns after cooling, or fires caused by further heating of the household appliance after the thermal cut-off function fails, but the thermal cut-off device can automatically reset and then burn in a dry mode, and the potential risks exist when the bimetallic strip is out of order and fires easily occur.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a non-self-resetting thermal cutter.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the non-self-resetting thermal cutter comprises a main body shell and a fixed iron plate, wherein the main body shell is fixedly connected with the fixed iron plate, and the fixed iron plate is provided with a thermal bimetallic strip;
the end face, facing the fixed iron plate, of the main body shell is provided with a first signal wiring terminal, a second signal wiring terminal, a grounding steel ring, an L-pole plug wire terminal, an N-pole plug wire terminal, an L-pole action reed, an N-pole action reed and a porcelain rod;
the L-pole plug wire terminal is electrically connected with the L-pole action reed, the N-pole plug wire terminal and the N-pole action reed through silver contacts;
the number of the porcelain rods is two, and the porcelain rods are respectively crossed with projections of the L-pole action reed and the N-pole action reed on the main body shell;
the end face, facing to one end of the fixed iron plate, of the main body shell is also provided with a limit column, a fixed column, a push rod, a fixed clamping seat and a limit clamping block, the fixed clamping seat is movably matched with the limit clamping block, and the limit clamping block can rotate relative to the fixed clamping seat;
one end of the limiting clamping block is abutted against the L-pole action reed or the N-pole action reed, and the other end of the limiting clamping block is fixedly connected with the ejector rod;
the ejector rod is movably connected with the fixed column, and can reciprocate linearly along the axial direction of the fixed column;
the limiting column is arranged between the fixing column and the limiting clamping seat, the ejector rod penetrates through the limiting column, and the ejector rod can rotate relative to the limiting column.
The main body shell on be equipped with the ring channel on the terminal surface of fixed iron plate one end dorsad, be equipped with first signal conducting ring, second signal stick, L utmost point conducting ring and N utmost point conducting ring in the ring channel, first signal conducting ring and first signal binding post electric connection, second signal stick and second signal binding post electric connection, L utmost point conducting ring and L utmost point plug wire terminal electric connection, N utmost point conducting ring and N utmost point plug wire terminal electric connection.
The side surface of the limit clamping block is provided with a cutting groove with a cut edge continuously bent, and the L-pole action reed or the N-pole action reed is provided with a clamping part matched with the cutting groove in shape.
The main body shell is fixedly connected with the fixed iron plate through threads.
The limiting clamping block on be equipped with the through-hole, fixed clamping seat on be equipped with the card post, the cover has spacing spring on the card post, and spacing spring one end is fixed on the card post, fixed clamping seat on have and keep off the fender portion of being connected with spacing clamping block fender.
The fixing column is of an annular structure, a return spring is arranged in the fixing column, and the return spring is fixedly connected with the ejector rod.
The invention has the beneficial effects that: the non-self-resetting thermal cut-off provided by the invention has the characteristics of simple structure, reliable performance and repeated dry burning prevention, prevents the power supply from being switched on again after the temperature of the thermal bimetallic strip is cooled and reset, and when a user needs to use the thermal bimetallic strip, the thermal bimetallic strip needs to lift the heating electric appliance and return to the original state at the moment, so that the main body is reset, the danger of repeated dry burning of the liquid heater under the unattended condition is avoided, the service life of the product is prolonged, and the safety performance of the electric appliance is further improved.
Drawings
FIG. 1 is a schematic top perspective view of the present invention;
FIG. 2 is a schematic bottom perspective view of the present invention;
FIG. 3 is a schematic view of the main housing structure of the present invention;
fig. 4 is an enlarged view of a portion of the present invention.
Detailed Description
As shown in fig. 1-4, a non-self-resetting thermal cutter comprises a main body casing 1 and a fixed iron plate 2, wherein the main body casing 1 is fixedly connected with the fixed iron plate 2, the fixed iron plate 2 is provided with a thermal bimetallic strip 3, the thermal bimetallic strip 3 is dish-shaped, the center of the conical top surface of the thermal bimetallic strip 3 is provided with a strip-shaped convex strip, the thermal bimetallic strip 3 is mature prior art, the structure of the thermal bimetallic strip is not repeated, the fixed iron plate 2 is provided with a corresponding L-shaped slot, and the convex strip is inserted into the L-shaped slot to be clamped and fixed, but the thermal cutter is not limited to the connection mode.
The main body shell 1 just is equipped with first signal binding post 4, second signal binding post 5, ground connection steel ring 6, L utmost point plug wire terminal 7, N utmost point plug wire terminal 8, L utmost point action reed 9, N utmost point action reed 10 and porcelain pole 11 on fixed iron plate 2 one end terminal surface, L utmost point plug wire terminal 7 and N utmost point plug wire terminal 8 one end respectively with the L utmost point and the N utmost point electric connection of liquid heating equipment, first signal binding post 4 and second signal binding post 5 external temperature sensing device respectively, have functions such as monitoring water level, heat preservation or voice broadcast, ground connection steel ring 6 ground connection.
The L-pole plug wire terminal 7 and the L-pole action reed 9, and the N-pole plug wire terminal 8 and the N-pole action reed 10 are electrically connected through silver contact, which is a common electrical connection mode, but in the design, the on-off of a silver contact on-off control circuit is an important part.
The two porcelain bars 11 are arranged, the porcelain bars 11 are respectively crossed with projections of the L-pole action reed 9 and the N-pole action reed 10 on the main body shell 1, the projections are crossed, namely, the two are in an upper and lower relation relative to a certain reference, and when the thermal bimetallic strip 3 is deformed by heating, the L-pole action reed 9 and the N-pole action reed 10 are pressed down through the porcelain bars 11, so that the circuit breaking is realized.
The main body shell 1 is also provided with a limit post 14, a fixed post 15, a push rod 16, a fixed clamping seat 12 and a limit clamping block 13 on the end face of one end of the fixed iron plate 2, the fixed clamping seat 12 and the limit clamping block 13 are movably matched, the limit clamping block 13 can rotate relative to the fixed clamping seat 12, the rotation angle is limited, if the rotation angle is random, when the L pole action reed 9 or the N pole action reed 10 is pressed down, the limit clamping block 13 cannot press the L/N pole action reed 10, the reset is prevented, and the open circuit state cannot be maintained.
One end of the limiting clamping block 13 is abutted against the L-pole action reed 9 or the N-pole action reed 10, and the other end of the limiting clamping block 13 is fixedly connected with the ejector rod 16. When the circuit is conducted, the side surface of the limit clamping block 13 is in contact with the L/N pole action reed 10, and the contact means contact and interaction force exists; when the circuit is broken, the L/N pole action reed 10 is positioned below the limit clamping block 13 to have upward or oblique acting force on the limit clamping block, so that the position of the limit clamping block is kept relatively unchanged.
The ejector rod 16 is movably connected with the fixed column 15, the ejector rod 16 can reciprocate linearly along the axial direction of the fixed column 15, the ejector rod 16 is slightly lifted at one end of the fixed column 15 during manual reset, then the other end of the ejector rod 16 drives one end of the limiting clamping block 13 to be pressed downwards, and the other end of the limiting clamping block 13 is tilted upwards to be separated from the L/N pole action reed 10, so that the reset effect is achieved.
The limiting post 14 is arranged between the fixed post 15 and the limiting clamping seat, the ejector rod 16 passes through the limiting post 14, the ejector rod 16 can rotate relative to the limiting post 14, the limiting post 14 is designed to provide a supporting point for the ejector rod 16, and the movable space of the ejector rod 16 on the limiting post 14 is limited.
The above-mentioned fixed clamping seat 12 and its matched component can be singly matched with L-pole action reed 9 or N-pole action reed 10, and also can be two kinds of them, when the circuit is broken, it needs to operate the ejector rod 16 respectively connected with two poles, so that it can be successfully reset.
The main body shell 1 on be equipped with ring channel 17 on the terminal surface of fixed iron plate 2 one end dorsad, be equipped with first signal conducting ring 18, second signal stick 19, L utmost point conducting ring 20 and N utmost point conducting ring 21 in the ring channel 17, first signal conducting ring 18 and first signal binding post 4 electric connection, second signal stick 19 and second signal binding post 5 electric connection, L utmost point conducting ring 20 and L utmost point plug wire terminal 7 electric connection, N utmost point conducting ring 21 and N utmost point plug wire terminal 8 electric connection, the both sides of ground connection steel ring 6 on main body shell 1 all can be observed, it is the integral type structure, other can make the disjunctor structure according to actual demand.
The side surface of the limit clamping block 13 is provided with a cutting groove 22 with a cut edge continuously bent, the L-pole action reed 9 or the N-pole action reed 10 is provided with a clamping part 23 which is matched with the shape of the cutting groove 22, and the structure or the state is kept stable through the matched compression.
The main body shell 1 is fixed with the fixed iron plate 2 through threaded connection, the connection mode is simple and convenient, the structure is stable, and meanwhile, the connection mode is convenient to detach and has higher reliability than buckle type connection.
The limiting clamping block 13 on be equipped with the through-hole 24, fixed cassette 12 on be equipped with the card post 25, the cover has spacing spring 26 on the card post 25, and spacing spring 26 one end is fixed on the card post 25, fixed cassette 12 on have and keep off the fender portion 27 of being connected with spacing clamping block 13, spacing spring 26's effect lies in opening fender portion 27 and card post 25, realizes keeping off and connects portion 27 and spacing clamping block 13's fender to connect fixedly, this kind of fixed mode is ingenious, practical.
The fixing column 15 is of an annular structure, a return spring is arranged in the fixing column 15, and the return spring is fixedly connected with the ejector rod 16, namely, the movable connection between the ejector rod 16 and the fixing column 15 is realized through the return spring.
In summary, a set of limiting device is formed, when the power base connector is inserted into the appliance input socket of the main body shell 1 of the thermal cut-off device, namely, in the annular groove 17, the ejector rod 16 pushes the limiting clamping block 13, the limiting spring 26 acts against the action reed, when the liquid heater is dry-burned, the temperature is overrun, the thermal bimetallic strip 3 acts to push away the porcelain rod 11, after the L/N action reed is pushed open, the L/N action reed is lower than the limiting clamping block 13, meanwhile, the limiting clamping block 13 clamps the L/N action reed, the power supply is turned on again after the thermal bimetallic strip 3 is cooled and reset, when a user needs to use, the heating electric appliance is required to be lifted, the return spring is contracted at the moment, the ejector rod 16 presses one end of the limiting clamping block 13, the other end of the limiting clamping block 13 returns upwards, the L/N action reed contacts with the wiring terminal and returns to the original state, so that the main body reset is realized, the danger of repeated dry-burning of the liquid heater under the unattended condition is avoided, the service life of the product is prolonged, and the safety performance of the electric appliance is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be appreciated by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the invention, and that simple modifications and substitutions by those skilled in the art are within the scope of the invention without departing from the spirit and scope of the invention.
The invention has the beneficial effects that: the non-self-resetting thermal cut-off provided by the invention has the characteristics of simple structure, reliable performance and repeated dry burning prevention, prevents the power supply from being switched on again after the temperature of the thermal bimetallic strip is cooled and reset, and when a user needs to use the thermal bimetallic strip, the thermal bimetallic strip needs to lift the heating electric appliance and return to the original state at the moment, so that the main body is reset, the danger of repeated dry burning of the liquid heater under the unattended condition is avoided, the service life of the product is prolonged, and the safety performance of the electric appliance is further improved.
Claims (3)
1. The non-self-resetting thermal cutter comprises a main body shell and a fixed iron plate, wherein the main body shell is fixedly connected with the fixed iron plate;
the end face, facing the fixed iron plate, of the main body shell is provided with a first signal wiring terminal, a second signal wiring terminal, a grounding steel ring, an L-pole plug wire terminal, an N-pole plug wire terminal, an L-pole action reed, an N-pole action reed and a porcelain rod;
the L-pole plug wire terminal is electrically connected with the L-pole action reed through a silver contact, and the N-pole plug wire terminal is electrically connected with the N-pole action reed through a silver contact;
the number of the porcelain rods is two, and the porcelain rods are respectively crossed with projections of the L-pole action reed and the N-pole action reed on the main body shell;
the end face, facing to one end of the fixed iron plate, of the main body shell is also provided with a limit column, a fixed column, a push rod, a fixed clamping seat and a limit clamping block, the fixed clamping seat is movably matched with the limit clamping block, and the limit clamping block can rotate relative to the fixed clamping seat;
one end of the limiting clamping block is abutted against the L-pole action reed or the N-pole action reed, and the other end of the limiting clamping block is fixedly connected with the ejector rod;
the ejector rod is movably connected with the fixed column, and can reciprocate linearly along the axial direction of the fixed column;
the limiting column is arranged between the fixed column and the fixed clamping seat, the ejector rod passes through the limiting column, and the ejector rod can rotate relative to the limiting column;
the side surface of the limit clamping block is provided with a cutting groove with a cut edge continuously bent, and the L-pole action reed or the N-pole action reed is provided with a clamping part matched with the cutting groove in shape;
the limiting clamping block is provided with a through hole, the fixing clamping seat is provided with a clamping column, the clamping column is sleeved with a limiting spring, one end of the limiting spring is fixed on the clamping column, and the fixing clamping seat is provided with a blocking part which is in blocking connection with the limiting clamping block;
the fixing column is of an annular structure, a return spring is arranged in the fixing column, and the return spring is fixedly connected with the ejector rod.
2. The non-self-resetting thermal cutter as defined in claim 1, wherein an annular groove is arranged on an end face of the main body shell, which is opposite to the end face of the fixed iron plate, a first signal conducting ring, a second signal rod, an L-pole conducting ring and an N-pole conducting ring are arranged in the annular groove, the first signal conducting ring is electrically connected with the first signal wiring terminal, the second signal rod is electrically connected with the second signal wiring terminal, the L-pole conducting ring is electrically connected with the L-pole plug wire terminal, and the N-pole conducting ring is electrically connected with the N-pole plug wire terminal.
3. The non-self-resetting thermal cutter as defined in claim 1, wherein the main body casing is fixed to the fixed iron plate by screw connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711018050.2A CN107564766B (en) | 2017-10-27 | 2017-10-27 | Non-self-resetting thermal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711018050.2A CN107564766B (en) | 2017-10-27 | 2017-10-27 | Non-self-resetting thermal cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107564766A CN107564766A (en) | 2018-01-09 |
| CN107564766B true CN107564766B (en) | 2024-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711018050.2A Active CN107564766B (en) | 2017-10-27 | 2017-10-27 | Non-self-resetting thermal cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN107564766B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036956A (en) * | 2018-08-17 | 2018-12-18 | 浙江众腾电器科技有限公司 | Electric kettle and its temperature controller |
| CN110349803A (en) * | 2019-08-08 | 2019-10-18 | 陈利民 | A kind of band is dry to stew self-locking temperature control coupler |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153859A (en) * | 1995-07-31 | 2000-11-28 | Strix Limited | Liquid heating vessels |
| DE20220822U1 (en) * | 2002-01-14 | 2004-04-22 | Shao, Zhicheng, Shunde | Temp controller, electric connector and electric water heater |
| CN1571585A (en) * | 2004-05-11 | 2005-01-26 | 邵志成 | Temperature controller and electric connector |
| CN201117565Y (en) * | 2007-11-08 | 2008-09-17 | 浙江大学 | Temperature controller for electric heater |
| CN201153172Y (en) * | 2008-01-17 | 2008-11-19 | 宁波市佳百仕电器有限公司 | Dry heating self-locking protection construction |
| CN202404461U (en) * | 2011-12-14 | 2012-08-29 | 浙江家泰电器制造有限公司 | Temperature sensitive controller |
| CN207367880U (en) * | 2017-10-27 | 2018-05-15 | 林望成 | A kind of non-automatic-reset thermal cutter |
-
2017
- 2017-10-27 CN CN201711018050.2A patent/CN107564766B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6153859A (en) * | 1995-07-31 | 2000-11-28 | Strix Limited | Liquid heating vessels |
| DE20220822U1 (en) * | 2002-01-14 | 2004-04-22 | Shao, Zhicheng, Shunde | Temp controller, electric connector and electric water heater |
| CN1571585A (en) * | 2004-05-11 | 2005-01-26 | 邵志成 | Temperature controller and electric connector |
| CN201117565Y (en) * | 2007-11-08 | 2008-09-17 | 浙江大学 | Temperature controller for electric heater |
| CN201153172Y (en) * | 2008-01-17 | 2008-11-19 | 宁波市佳百仕电器有限公司 | Dry heating self-locking protection construction |
| CN202404461U (en) * | 2011-12-14 | 2012-08-29 | 浙江家泰电器制造有限公司 | Temperature sensitive controller |
| CN207367880U (en) * | 2017-10-27 | 2018-05-15 | 林望成 | A kind of non-automatic-reset thermal cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107564766A (en) | 2018-01-09 |
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| PB01 | Publication | ||
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Effective date of registration: 20210114 Address after: 325000 Tu duntang village, Lecheng Town, Yueqing City, Wenzhou City, Zhejiang Province Applicant after: WENZHOU LEIFAN TECHNOLOGY Co.,Ltd. Address before: 325000 Chantou village, Tiancheng Township, Yueqing City, Wenzhou City, Zhejiang Province Applicant before: Lin Wangcheng |
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