CN112447447A - Temperature-limiting temperature controller convenient for manual intervention reset for maintenance - Google Patents
Temperature-limiting temperature controller convenient for manual intervention reset for maintenance Download PDFInfo
- Publication number
- CN112447447A CN112447447A CN202011300821.9A CN202011300821A CN112447447A CN 112447447 A CN112447447 A CN 112447447A CN 202011300821 A CN202011300821 A CN 202011300821A CN 112447447 A CN112447447 A CN 112447447A
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- Prior art keywords
- groove
- temperature
- limiting
- manual intervention
- spring
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- 238000012423 maintenance Methods 0.000 title abstract description 10
- 239000004033 plastic Substances 0.000 claims abstract description 61
- 229920003023 plastic Polymers 0.000 claims abstract description 61
- 239000000919 ceramic Substances 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 239000012634 fragment Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/04—Bases; Housings; Mountings
- H01H37/06—Bases; Housings; Mountings to facilitate replacement, e.g. cartridge housing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a temperature-limiting type temperature controller convenient for maintenance and capable of being reset through manual intervention, which comprises a plastic shell, a spring sleeve, a compression spring, a plastic sealing cover, a contact reed, a clamping groove, a clamping block, a pressure head, a first through hole, a bolt and a knob, wherein the spring sleeve is connected inside the plastic shell in a sliding mode, the compression spring is sleeved on the inner side of the spring sleeve in a sliding mode, the lower end of the compression spring on the right side is connected with a ceramic seat in a contacting mode, the compression spring is a reducing spring, the contact reed is fixedly installed on the inner side of the plastic sealing cover, the clamping groove is formed in the inner side of the plastic sealing cover, the clamping block is clamped in the clamping groove, the lower end of the clamping block is fixedly connected with the pressure head, the bottom of the pressure head is. The invention relates to a temperature-limiting temperature controller convenient for maintenance and reset through manual intervention, which has the characteristics of convenient and fast disassembly and maintenance and more stable installation of a wiring terminal.
Description
Technical Field
The invention belongs to the technical field of temperature-limiting temperature controllers, and particularly relates to a temperature-limiting temperature controller which is convenient to overhaul and is reset through manual intervention.
Background
The existing temperature-limiting temperature controller for manual intervention reset of the PTC is generally an open type and non-contact type temperature sensing structure, is mainly used for devices such as a humidifier, a fan heater and the like, and is used for safety protection under an accident condition, for example, the temperature-limiting temperature controller for manual intervention reset of the PTC with the open type structure is adopted on a heating device such as the fan heater and the like; when the temperature-limiting temperature controller is used for devices such as a humidifier and the like, the existing PTC manual intervention reset temperature-limiting temperature controller can be installed in a heating element only by additionally installing an insulating shell or a jacket, and the temperature sensing part of the temperature-limiting temperature controller is not directly contacted with the heating element. But the package assembly that current temperature limiting type temperature controller adopted dismantles inconveniently, is unfavorable for dismantling and overhauls, and the binding post of installation passes through the bolt installation moreover, and it is unstable to appear becoming flexible to lead to the installation. Accordingly, there is a need for improvements in the art.
The invention content is as follows:
the invention aims to solve the problems in the prior art by providing a temperature-limited thermostat which is convenient to overhaul and is reset by manual intervention.
In order to solve the above problems, the present invention provides a technical solution:
the utility model provides a limit for temperature formula temperature controller that manual intervention resets convenient to overhaul, includes plastic housing, spring housing, compression spring, plastics closing cap, contact reed, draw-in groove, fixture block, pressure head, first through-hole, bolt, knob, plastic housing's inside sliding connection has the spring housing, compression spring, right side have been cup jointed in the inboard slip of spring housing compression spring's lower extreme contact is connected with ceramic holder, compression spring is the reducing spring, the inboard fixed mounting of plastics closing cap has the contact reed, the draw-in groove has been seted up to the inboard of plastics closing cap, the joint has the fixture block in the draw-in groove, the lower extreme fixedly connected with pressure head of fixture block, the bottom joint of pressure head is in the upper end of spring housing, the upper end fixedly connected with knob of bolt.
Preferably, the plastic sealing cover is provided with a first through hole in a clamping manner, and a bolt is slidably connected in the first through hole.
Preferably, a limiting groove is formed in the surface of the outer side of the plastic sealing cover, a limiting block is clamped in the limiting groove, a spring piece is fixedly connected with the surface of the knob, the limiting block is fixedly connected with the spring piece, a wiring terminal is installed between the plastic shell and the plastic sealing cover, a second through hole is formed in the wiring terminal, the second through hole is connected with the spring sleeve in a sliding mode, a third through hole is formed in the wiring terminal, a rubber sleeve is connected in the third through hole in a sliding mode, a bolt is connected in the rubber sleeve in a sliding mode, the lower end of the bolt is connected with the plastic shell in a threaded mode, a fourth through hole is formed in the wiring terminal, and a heating body is installed.
Preferably, the bottom of the heating body is provided with a groove, and a bulge is clamped in the groove.
Preferably, the lower extreme contact of heat-generating body is connected with ceramic base, the upper end of ceramic base is provided with the arch, ceramic base and protruding formula structure as an organic whole, the inside slip of ceramic base has cup jointed ceramic ejector pin, the spread groove has been seted up to the lower extreme of ceramic base, sliding connection has the connecting rod in the spread groove, the outside slip of ceramic base has cup jointed the seal cover, the outside slip of seal cover has cup jointed metal casing, metal casing is provided with the metal video disc, the upper end fixedly connected with connecting rod of metal video disc, the quantity of connecting rod is two, two the connecting rod is the symmetric distribution on the metal video disc, the inboard middle part fixedly connected with cassette of metal video disc, the cassette internal clamping has square piece, the upper end fixedly connected with ceramic ejector pin of square piece.
Preferably, the upper end of the sealing sleeve is in contact with the lower end of the plastic housing, and the sealing sleeve is made of a rubber material.
As preferred, the lower extreme contact of pottery seat is connected with metal casing, the spout has been seted up to metal casing's lateral wall, sliding connection has the slider in the spout, the slider sets up in plastic casing's the outside, slider and plastic casing formula structure as an organic whole, the constant head tank has been seted up to metal casing's lateral wall, the joint has the locating pin in the constant head tank, plastic casing's bottom lateral wall fixedly connected with adapter sleeve, the inside sliding connection of adapter sleeve has the locating pin, the fixed surface of locating pin is connected with the pull rod, there is the anticreep piece at the end of pull rod through threaded connection, pull rod and adapter sleeve sliding connection, reset spring has been cup jointed in the outside of pull.
Preferably, one end of the return spring is in contact with the inner side surface of the connecting sleeve, and the other end of the return spring is in contact connection with the positioning pin.
The invention has the beneficial effects that: the invention relates to a temperature-limiting temperature controller convenient for maintenance and reset by manual intervention, which has the characteristics of convenient and fast disassembly and maintenance and more stable installation of a wiring terminal, and compared with the traditional temperature-limiting temperature controller convenient for maintenance and reset by manual intervention, the temperature-limiting temperature controller convenient for maintenance and reset by manual intervention has the following two beneficial effects in specific use:
firstly, the designed plastic shell and the metal shell are assembled in a clamping manner, when the plastic shell and the metal shell need to be disassembled, the plastic shell and the metal shell can be disassembled only by pushing the positioning pin to leave the positioning groove on the metal shell, and the internal parts such as the ceramic seat, the ceramic ejector rod and the like can be disassembled and assembled, so that the disassembly is convenient, and the overhaul work is facilitated;
secondly, through installing binding post between plastics closing cap and plastic casing, and fasten through the bolt, still design the spring housing and pass binding post, realize spacing to the binding post, and design the knob on the bolt, design the shell fragment on the knob, design the stopper on the shell fragment, through the cooperation of the spacing groove on stopper and the plastics closing cap, avoid the bolt rotation to appear to lead to connecting not hard up to make the binding post installation more stable.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention;
FIG. 4 is an enlarged view of the structure of the portion C of FIG. 1 according to the present invention;
fig. 5 is a top view of the terminal of fig. 1 of the present invention;
FIG. 6 is a bottom view of the ceramic seat of FIG. 1 in accordance with the present invention;
FIG. 7 is a top view of the metal disc of FIG. 1 according to the present invention.
In the figure: 1. a plastic housing; 2. a spring housing; 3. a compression spring; 4. a plastic cover; 5. a contact reed; 6. a card slot; 7. a clamping block; 8. a pressure head; 9. a first through hole; 10. a bolt; 11. a knob; 12. a spring plate; 13. a limiting block; 14. a limiting groove; 15. a wiring terminal; 151. a second through hole; 16. a third through hole; 17. a rubber sleeve; 18. a fourth via hole; 19. a heating element; 20. a groove; 21. a protrusion; 22. a ceramic base; 23. connecting grooves; 24. sealing sleeves; 25. a metal housing; 26. a metal disc; 27. a connecting rod; 28. a card holder; 29. a square block; 30. a ceramic ejector rod; 31. a chute; 32. positioning a groove; 33. a slider; 34. connecting sleeves; 35. positioning pins; 36. a pull rod; 37. a return spring; 38. the anticreep piece.
The specific implementation mode is as follows:
as shown in fig. 1 to 7, the following technical solutions are adopted in the present embodiment:
example (b):
a temperature-limiting temperature controller which is convenient for maintenance and is reset by manual intervention comprises a plastic shell 1, a spring sleeve 2, a compression spring 3, a plastic sealing cover 4, a contact reed 5, a clamping groove 6, a clamping block 7, a pressure head 8, a first through hole 9, a bolt 10 and a knob 11, the interior of the plastic shell 1 is connected with a spring sleeve 2 in a sliding way, the inner side of the spring sleeve 2 is sleeved with a compression spring 3 in a sliding way, the lower end of the compression spring 3 at the right side is connected with a ceramic seat 22 in a contact way, the compression spring 3 is a reducing spring, the inner side of the plastic sealing cover 4 is fixedly provided with a contact reed 5, a clamping groove 6 is arranged on the inner side of the plastic sealing cover 4, a clamping block 7 is clamped in the clamping groove 6, the lower end of the clamping block 7 is fixedly connected with a pressure head 8, the bottom joint of pressure head 8 is in the upper end of spring housing 2, the upper end fixedly connected with knob 11 of bolt 10.
The plastic sealing cover 4 is provided with a first through hole 9 in a clamping manner, and a bolt 10 is connected in the first through hole 9 in a sliding manner.
The outer side surface of the plastic sealing cover 4 is provided with a limiting groove 14, the limiting groove 14 is internally clamped with a limiting block 13, the surface of the knob 11 is fixedly connected with an elastic piece 12, the elastic piece 12 is fixedly connected with the limiting block 13, a wiring terminal 15 is installed between the plastic shell 1 and the plastic sealing cover 4, the wiring terminal 15 is provided with a second through hole 151, the second through hole 151 is in sliding connection with the spring sleeve 2, the wiring terminal 15 is provided with a third through hole 16, a rubber sleeve 17 is in sliding connection with the third through hole 16, a bolt 10 is in sliding connection with the rubber sleeve 17, the lower end of the bolt 10 is in threaded connection with the plastic shell 1, the wiring terminal 15 is provided with a fourth through hole 18, and the plastic shell 1 is internally provided with a heating body 19.
The bottom of the heating body 19 is provided with a groove 20, and a protrusion 21 is clamped in the groove 20.
Wherein, the lower end of the heating body 19 is connected with a ceramic seat 22 in a contact way, the upper end of the ceramic seat 22 is provided with a bulge 21, the ceramic seat 22 and the bulge 21 are of an integrated structure, the ceramic ejector rod 30 is sleeved in the ceramic seat 22 in a sliding manner, the lower end of the ceramic seat 22 is provided with a connecting groove 23, the connecting groove 23 is connected with a connecting rod 27 in a sliding way, a sealing sleeve 24 is sleeved on the outer side of the ceramic seat 22 in a sliding manner, a metal shell 25 is sleeved on the outer side of the sealing sleeve 24 in a sliding manner, the metal shell 25 is provided with a metal disc 26, the upper end of the metal disc 26 is fixedly connected with a connecting rod 27, the number of the connecting rods 27 is two, the two connecting rods 27 are symmetrically distributed on the metal disc 26, the middle part of the inner side of the metal disc 26 is fixedly connected with a clamping seat 28, a square block 29 is clamped in the clamping seat 28, and the upper end of the square block 29 is fixedly connected with a ceramic ejector rod 30.
Wherein, the upper end of the sealing sleeve 24 is contacted with the lower end of the plastic shell 1, and the sealing sleeve 24 is made of rubber material.
Wherein, the lower extreme contact of ceramic seat 22 is connected with metal casing 25, spout 31 has been seted up to metal casing 25's lateral wall, sliding connection has slider 33 in spout 31, slider 33 sets up in plastic casing 1's the outside, slider 33 and plastic casing 1 formula structure as an organic whole, constant head tank 32 has been seted up to metal casing 25's lateral wall, positioning pin 35 has been pegged graft in the constant head tank 32, plastic casing 1's bottom lateral wall fixedly connected with adapter sleeve 34, the inside sliding connection of adapter sleeve 34 has positioning pin 35, positioning pin 35's fixed surface is connected with pull rod 36, there is anticreep piece 38 at the end of pull rod 36 through threaded connection, pull rod 36 and adapter sleeve 34 sliding connection, reset spring 37 has been cup jointed in the outside of pull rod 36.
Wherein, one end of the return spring 37 contacts with the inner side surface of the connecting sleeve 34, and the other end of the return spring 37 contacts with the positioning pin 35.
The using state of the invention is as follows: when the temperature-limiting temperature controller needs to be disassembled, the positioning pin 35 in the positioning groove 32 on the metal shell 25 is pushed by a finger, the positioning pin 35 contracts to leave the positioning groove 32, the return spring 37 is compressed, after the positioning pin 35 leaves the positioning groove 32, the metal shell 25 can be separated from the plastic shell 1, then the ceramic ejector rod 30 can be pulled out, and then the components such as the ceramic seat 22 and the like can be taken down, so that the disassembly is convenient and rapid, and the overhaul work is convenient; through installing binding post 15 between plastics closing cap 4 and plastic casing 1, and fasten through bolt 10, still design spring housing 2 and pass binding post 15, realize spacing to binding post 15, and design knob 11 on the bolt 10, design shell fragment 12 on the knob 11, design stopper 13 on the shell fragment 12, through stopper 13 and the cooperation of spacing groove 14 on the plastics closing cap 4, it leads to connecting not hard up to avoid the rotation to appear in bolt 10, thereby make binding post 15 install more stably.
While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (8)
1. The utility model provides a limit temperature formula temperature controller that manual intervention resets convenient to overhaul, includes plastic casing (1), spring housing (2), compression spring (3), plastics closing cap (4), contact reed (5), draw-in groove (6), fixture block (7), pressure head (8), first through-hole (9), bolt (10), knob (11), its characterized in that: the inside sliding connection of plastics casing (1) has spring housing (2), compression spring (3), right side have been cup jointed in the inboard slip of spring housing (2) compression spring (3) lower extreme contact connection has ceramic holder (22), compression spring (3) are reducing spring, the inboard fixed mounting of plastics closing cap (4) has contact reed (5), draw-in groove (6) have been seted up to the inboard of plastics closing cap (4), the joint has fixture block (7) in draw-in groove (6), the lower extreme fixedly connected with pressure head (8) of fixture block (7), the bottom joint of pressure head (8) is in the upper end of spring housing (2), the upper end fixedly connected with knob (11) of bolt (10).
2. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 1 characterized in that: a first through hole (9) is clamped on the plastic sealing cover (4), and a bolt (10) is connected in the first through hole (9) in a sliding mode.
3. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 1 characterized in that: the outer side surface of the plastic sealing cover (4) is provided with a limiting groove (14), a limiting block (13) is clamped in the limiting groove (14), the surface of the knob (11) is fixedly connected with an elastic sheet (12), the elastic sheet (12) is fixedly connected with the limiting block (13), a wiring terminal (15) is installed between the plastic shell (1) and the plastic sealing cover (4), the wiring terminal (15) is provided with a second through hole (151), the second through hole (151) is in sliding connection with the spring sleeve (2), the wiring terminal (15) is provided with a third through hole (16), the third through hole (16) is in sliding connection with a rubber sleeve (17), the rubber sleeve (17) is in sliding connection with a bolt (10), the lower end of the bolt (10) is in threaded connection with the plastic shell (1), the wiring terminal (15) is provided with a fourth through hole (18), and a heating body (19) is arranged in the plastic shell (1).
4. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 3, characterized in that: the bottom of the heating body (19) is provided with a groove (20), and a bulge (21) is clamped in the groove (20).
5. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 3, characterized in that: the heating device is characterized in that the lower end of the heating body (19) is in contact connection with a ceramic seat (22), the upper end of the ceramic seat (22) is provided with a protrusion (21), the ceramic seat (22) and the protrusion (21) are of an integrated structure, a ceramic ejector rod (30) is sleeved in the ceramic seat (22) in a sliding mode, the lower end of the ceramic seat (22) is provided with a connecting groove (23), the connecting groove (23) is connected with a connecting rod (27) in a sliding mode, the outer side of the ceramic seat (22) is sleeved with a sealing sleeve (24) in a sliding mode, the outer side of the sealing sleeve (24) is sleeved with a metal shell (25) in a sliding mode, the metal shell (25) is provided with a metal disc (26), the upper end of the metal disc (26) is fixedly connected with the connecting rods (27), the connecting rods (27) are two in number, the middle part of the inner side of the metal disc (26) is fixedly connected with a clamping seat (28), a square block (29) is clamped in the clamping seat (28), and the upper end of the square block (29) is fixedly connected with a ceramic ejector rod (30).
6. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 5, characterized in that: the upper end of the sealing sleeve (24) is in contact with the lower end of the plastic shell (1), and the sealing sleeve (24) is made of rubber materials.
7. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 1 characterized in that: the lower end of the ceramic seat (22) is in contact connection with a metal shell (25), a sliding groove (31) is formed in the side wall of the metal shell (25), a sliding block (33) is connected in the sliding groove (31) in a sliding mode, the sliding block (33) is arranged on the outer side of the plastic shell (1), the sliding block (33) and the plastic shell (1) are of an integrated structure, a positioning groove (32) is formed in the side wall of the metal shell (25), a positioning pin (35) is connected in the positioning groove (32) in a clamping mode, a connecting sleeve (34) is fixedly connected to the side wall of the bottom of the plastic shell (1), a positioning pin (35) is connected in the connecting sleeve (34) in a sliding mode, a pull rod (36) is fixedly connected to the surface of the positioning pin (35), an anti-falling block (38) is connected to the tail end of the pull, and a return spring (37) is sleeved on the outer side of the pull rod (36).
8. The temperature-limiting thermostat that manual intervention resets of convenient to overhaul according to claim 7, characterized in that: one end of the return spring (37) is in contact with the inner side surface of the connecting sleeve (34), and the other end of the return spring (37) is in contact connection with a positioning pin (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011300821.9A CN112447447A (en) | 2020-11-19 | 2020-11-19 | Temperature-limiting temperature controller convenient for manual intervention reset for maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011300821.9A CN112447447A (en) | 2020-11-19 | 2020-11-19 | Temperature-limiting temperature controller convenient for manual intervention reset for maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112447447A true CN112447447A (en) | 2021-03-05 |
Family
ID=74737689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011300821.9A Pending CN112447447A (en) | 2020-11-19 | 2020-11-19 | Temperature-limiting temperature controller convenient for manual intervention reset for maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112447447A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127888A1 (en) * | 1981-07-15 | 1983-02-03 | Gustav Wahler Gmbh U. Co, 7300 Esslingen | Electrical switching apparatus |
| US20020011915A1 (en) * | 1997-04-11 | 2002-01-31 | Masahiko Niino | Thermal Protector |
| CN201773768U (en) * | 2010-08-05 | 2011-03-23 | 佛山市高明欧一电子制造有限公司 | PTC manual intervention reset temperature-limiting temperature controller |
| CN208675619U (en) * | 2018-06-26 | 2019-03-29 | 广州川沃电气设备有限公司 | A kind of control cabinet facilitating installation |
| CN210838135U (en) * | 2019-09-24 | 2020-06-23 | 冯玉华 | Earthing device for electrical engineering |
| CN111886666A (en) * | 2018-09-20 | 2020-11-03 | 株式会社生方制作所 | Direct current breaker |
-
2020
- 2020-11-19 CN CN202011300821.9A patent/CN112447447A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127888A1 (en) * | 1981-07-15 | 1983-02-03 | Gustav Wahler Gmbh U. Co, 7300 Esslingen | Electrical switching apparatus |
| US20020011915A1 (en) * | 1997-04-11 | 2002-01-31 | Masahiko Niino | Thermal Protector |
| CN201773768U (en) * | 2010-08-05 | 2011-03-23 | 佛山市高明欧一电子制造有限公司 | PTC manual intervention reset temperature-limiting temperature controller |
| CN208675619U (en) * | 2018-06-26 | 2019-03-29 | 广州川沃电气设备有限公司 | A kind of control cabinet facilitating installation |
| CN111886666A (en) * | 2018-09-20 | 2020-11-03 | 株式会社生方制作所 | Direct current breaker |
| CN210838135U (en) * | 2019-09-24 | 2020-06-23 | 冯玉华 | Earthing device for electrical engineering |
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Application publication date: 20210305 |