CN203733715U - Multifunctional motor protector - Google Patents
Multifunctional motor protector Download PDFInfo
- Publication number
- CN203733715U CN203733715U CN201420079070.6U CN201420079070U CN203733715U CN 203733715 U CN203733715 U CN 203733715U CN 201420079070 U CN201420079070 U CN 201420079070U CN 203733715 U CN203733715 U CN 203733715U
- Authority
- CN
- China
- Prior art keywords
- protector
- bimetallic element
- holder
- overload
- electric machine
- 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.)
- Expired - Lifetime
Links
- 230000001012 protector Effects 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000003068 static effect Effects 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000013021 overheating Methods 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000013322 soy milk Nutrition 0.000 description 1
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
The utility model discloses a multifunctional motor protector, and relates to a predetermined overload and overheating protection type safety multifunctional motor protector provided with a built-in overload heating device and a PTC heating element. The multifunctional motor protector has overload self-locking protection and overheat self-locking protection functions. The multifunctional motor protector comprises a housing, a fixation seat, a PTC heating element, a movable contact, a stationary contact, a bimetallic element, a stationary contact sheet, a conductive sheet, an overload heating device, an adjusting plate, a left terminal and a right terminal. The fixation seat is provided with a stationary contact socket, an overload heating device socket, a PTC heating element socket and bimetallic element and adjusting plate arrangement grooves. The stationary contact is arranged into the stationary contact socket formed in the fixation seat so as to be welded with the stationary contact sheet. The bimetallic element assembly is arranged in the bimetallic element arrangement groove of the fixation seat assembly. The adjusting plate is arranged in the adjusting plate arrangement groove of the fixation seat assembly. The PTC heating element is arranged in the PTC heating element socket of the fixation seat.
Description
Technical field
What a kind of protector for electric machine of the utility model related to is a kind of have built-in overload electro-heat equipment and PTC heater element; the protector with overload self-locking and overheated self-locking multiple protection functions, is applicable to the electric rotating machine fields such as fruit juice motor, motor for soymilk machine, pump motor, motor of dust collector, electric tool.
Background technology
Common motor protecter is thermal protector or overload protective device at present, its thermal protector principle is: when thermal protector reaches the specified take-off temperature value of the inner bimetallic element of thermal protector by the medium temperature of induction machine, bimetallic element action, cut off the electric current through motor coil, motor is quit work; In the time that protector ambient temperature drops to the specified reset temperature value of bimetallic element, bimetallic element homing action, again connects current of electric and makes its work, so in the circulation of motor in heating/disconnect → cooling/connection.The principle of overload protective device is: become its bimetallic element heating action of ambassador by the current anomaly of protector, cut off the electric current through motor coil, motor is quit work;
Know above, thermal protector belongs to temperature sensor protection motor, during to motor rotation blockage electric current moment become the large damage producing can not sensitivity protection device; And normally external of overload protective device, not only volume is large, installation cost is high, and can not electric machine temperature rise slowly be raise and be protected.
Therefore the fail safe higher for motor has of existing motor manufacturer, has to thermal protector and overload protective device series connection be used, although bearing, the reality misery complicated, cost is high is installed, but still can not thoroughly solves the safety issue of motor simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of protector for electric machine for above-mentioned weak point, is a kind of have built-in overload electro-heat equipment and PTC heater element, the safety type protector for electric machine of predetermined overload, overtemperature protection.Also sensitiveer to overload protection when being scheduled to overload electro-heat equipment to overtemperature protection sensitivity.The PTC heater element increasing passes to bimetallic element with constant heating temp after bimetallic element action; when making a kind of protector for electric machine of the utility model patent solve above-mentioned background technical deficiency problem; increase the defencive function of overload self-locking and overheated self-locking, thereby ensured the being perfectly safe property of the electric equipment of protected motor.
A kind of protector for electric machine is to take following technical scheme to realize:
A kind of protector for electric machine comprises shell, holder, PTC heater element, moving contact, fixed contact, bimetallic element, static contact, brace, elastic conducting strip, overload electro-heat equipment, adjustable plate, left terminal and right terminal, one end of right terminal is provided with bimetallic element pad, one end of left terminal is provided with overload electro-heat equipment welding boss, one end of left terminal is connected with brace one end, the other end of brace is connected with the top of static contact, one end of static contact is provided with electro-heat equipment welding boss, and adjustable plate one end is provided with welding boss, static contact, brace, left terminal and right terminal are preset in holder simultaneously, in holder, be provided with the resettlement groove of fixed contact nest, overload electro-heat equipment nest, PTC heater element nest and bimetallic element, adjustable plate, the holder outer rim left and right sides is provided with shell holddown groove, forms holder assembly, one end of bimetallic element is provided with moving contact, forms bimetallic element assembly, fixed contact is placed in to the fixed contact nest and the positive welding of static contact that holder arranges, bimetallic element assembly is placed in the bimetallic element resettlement groove of holder assembly, after welding with the bimetallic element pad of right terminal middle-end setting, adjustable plate is placed in to the adjustable plate resettlement groove of holder assembly, the welding boss that adjustable plate one end arranges welds again, PTC heater element is placed in the PTC heater element nest of holder, one end of elastic conducting strip contacts with the reverse side of static contact, the other end contacts with the conducting surface of PTC heater element, form protector for electric machine assembly, after being put to shell, also fixes by protector for electric machine assembly.
According to the difference in the power of protected motor and motor use field; can select to excise brace; the overload electro-heat equipment of the corresponding technical parameter of bridge joint, overload electro-heat equipment be placed in bimetallic element under, can make bimetallic element respond to fast overload electro-heat equipment heating temp.Described overload electro-heat equipment is heater element or the material of heating wire or electric hot plate or other character.
A kind of protector for electric machine operation principle:
A kind of protector for electric machine bimetallic element of the utility model is connected with overload electro-heat equipment after by contact and PTC parallel connection, bimetallic element action in the time that electric machine temperature rise is too high, open contact, now PTC starts heating, bimetallic element remains open state always, makes it have thermal cutoff self-lock protection function; In the time that current of electric increases extremely, overload electro-heat equipment rapidly heating makes bimetallic element action, and open contact, and PTC starts heating, and bimetallic element remains open state always, makes it have overload and disconnects self-lock protection function.
A kind of protector for electric machine of the utility model is reasonable in design, and compact conformation, is a kind of brand-new protector, has wider application and more reliable security performance.Multiple fields that electric rotating machine, home electrical heater, ligthing paraphernalia, communication apparatus, electronic instrument and meter that can be widely used in motor, household electrical appliance etc. need to transship overheated self-lock protection.
Brief description of the drawings
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is a kind of protector for electric machine front view.
Fig. 2 is a kind of protector for electric machine vertical view.
Embodiment
With reference to accompanying drawing 1, 2, a kind of protector for electric machine comprises shell 1, holder 2, moving contact 3, fixed contact 4, bimetallic element 5, static contact 6, brace 7, overload electro-heat equipment 8, adjustable plate 9, right terminal 10, left terminal 11, PTC heater element 12, elastic conducting strip 13, PTC heater element nest 14, left terminal electro-heat equipment welding boss 15, static contact electro-heat equipment welding boss 16, holder outer rim both sides shell holddown groove 17, 18, the bimetallic element pad 19 of right terminal, fixed contact nest 20 in holder, overload electro-heat equipment nest 21 in holder, PTC heater element nest 22 and bimetallic element in holder, the resettlement groove 23 of adjustable plate.Moving contact 3 is connected with one end of bimetallic element 5, forms bimetallic element assembly; Static contact 6, brace 7, right terminal 10, left terminal 11 are preset in holder 2, form holder assembly; In holder assembly, be provided with the resettlement groove 23 of fixed contact nest 20, PTC heater element nest 22, overload electro-heat equipment nest 21 and bimetallic element, adjustable plate; After the fixed contact nest 20 that fixed contact 4 is placed in to holder setting is connected with static contact 6, again bimetallic element assembly is placed in to the bimetallic element of holder 2, the resettlement groove 23 of adjustable plate, be connected with the bimetallic element pad 19 of right terminal, finally adjustable plate 9 is placed in to the bimetallic element of holder 2, the resettlement groove 23 of adjustable plate, adjustable plate 9 one end are connected with bimetallic element pad 19 centre positions of right terminal again, have formed thermal protector assembly; PTC heater element is placed in to the PTC heater element nest 22 of holder; one end of elastic conducting strip 13 contacts with the reverse side of static contact 6; the other end contacts with the conducting surface of PTC heater element 12; form protector for electric machine assembly; protector for electric machine assembly is put after shell 1, the part of shell is fixed in holder outer rim both sides shell holddown groove 17,18 with stationary fixture simultaneously.When producing when abnormal current need to be protected, motor should excise brace 7; the overload electro-heat equipment 8 of corresponding technical parameter is welded to boss 16 bridge joints with left terminal electro-heat equipment welding boss 15, static contact electro-heat equipment respectively; overload electro-heat equipment 8 be placed in bimetallic element under; when can making motor abnormality electric current protect, make bimetallic element carry out overtemperature protection by sensitive temperature sensor.Add the above-mentioned PTC in parallel with bimetallic element, just formed a kind of protector for electric machine assembly that has overload protection, overtemperature protection, self-lock protection concurrently.Consider the easy for installation and seal request of protector for electric machine, left terminal 10 and right terminal 11 can connecting lead wires, and shell can be selected metal or nonmetal, and encapsulation can be riveted and also can be adopted epoxy resin encapsulated.
Brace can not excise, and also can need to select excision, the overload electro-heat equipment of the corresponding technical parameter of bridge joint according to motor protecter.
Described overload electro-heat equipment 8 is heater element or the material of heating wire, electric hot plate or other character.
Described PTC heater element 12 adopts heater element or the material of ceramic PTC heater element or other character.
Claims (5)
1. a protector for electric machine, is characterized in that: comprise shell, holder, PTC heater element, moving contact, fixed contact, bimetallic element, static contact, brace, elastic conducting strip, overload electro-heat equipment, adjustable plate, left terminal and right terminal, one end of right terminal is provided with bimetallic element pad, and one end of left terminal is provided with overload electro-heat equipment welding boss, and one end of static contact is provided with electro-heat equipment welding boss, static contact, brace, left terminal and right terminal are preset in holder simultaneously, in holder, be provided with the resettlement groove of fixed contact nest, overload electro-heat equipment nest, PTC heater element nest and bimetallic element, adjustable plate, the holder outer rim left and right sides is provided with shell holddown groove, forms holder assembly, one end of bimetallic element is provided with moving contact, forms bimetallic element assembly, the fixed contact nest that fixed contact is placed in to holder setting welds with static contact, bimetallic element assembly is placed in the bimetallic element resettlement groove of holder assembly, after welding with the bimetallic element pad of right terminal middle-end setting, adjustable plate is placed in to the adjustable plate resettlement groove of holder assembly, the welding boss that adjustable plate one end arranges welds again, PTC heater element is placed in the PTC heater element nest of holder, one end of elastic conducting strip contacts with the reverse side of static contact, the other end contacts with the conducting surface of PTC heater element, form protector for electric machine assembly, after being put to shell, also fixes by protector for electric machine assembly.
2. a kind of protector for electric machine according to claim 1, is characterized in that: brace can not excise, and also can need to select excision, the overload electro-heat equipment of the corresponding technical parameter of bridge joint according to motor protecter.
3. a kind of protector for electric machine according to claim 1, is characterized in that: described overload electro-heat equipment is heating wire or electric hot plate.
4. a kind of protector for electric machine according to claim 1, is characterized in that: described PTC heater element adopts ceramic PTC heater element.
5. a kind of protector for electric machine according to claim 1, is characterized in that: bimetallic element, by contact and the parallel connection of PTC heater element, is then connected with overload electro-heat equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079070.6U CN203733715U (en) | 2014-02-25 | 2014-02-25 | Multifunctional motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079070.6U CN203733715U (en) | 2014-02-25 | 2014-02-25 | Multifunctional motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733715U true CN203733715U (en) | 2014-07-23 |
Family
ID=51203766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079070.6U Expired - Lifetime CN203733715U (en) | 2014-02-25 | 2014-02-25 | Multifunctional motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733715U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752114A (en) * | 2015-04-21 | 2015-07-01 | 姚家米 | Overcurrent, overload and overheat protector |
| CN106004796A (en) * | 2016-07-05 | 2016-10-12 | 瑞安市硕维佳电子有限公司 | Windshield wiper motor protector |
| CN106463302A (en) * | 2015-04-28 | 2017-02-22 | 打矢恒温器株式会社 | Thermal protector |
| CN106847616A (en) * | 2017-03-31 | 2017-06-13 | 扬州德宝电器科技有限公司 | A kind of self-locking power cut off delay protector |
| CN107331577A (en) * | 2017-08-22 | 2017-11-07 | 江苏怡通控制系统有限公司 | A kind of New temperature protector |
| CN107633979A (en) * | 2017-10-13 | 2018-01-26 | 江苏常恒集团控制器件制品有限公司 | One kind power-off automatic reset overload protector |
| CN111312560A (en) * | 2020-04-20 | 2020-06-19 | 南京海川电子有限公司 | Overload overtemperature power failure self-recovery protector for household appliances |
-
2014
- 2014-02-25 CN CN201420079070.6U patent/CN203733715U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752114A (en) * | 2015-04-21 | 2015-07-01 | 姚家米 | Overcurrent, overload and overheat protector |
| CN106463302A (en) * | 2015-04-28 | 2017-02-22 | 打矢恒温器株式会社 | Thermal protector |
| CN106463302B (en) * | 2015-04-28 | 2018-06-08 | 打矢恒温器株式会社 | Thermal protector |
| CN106004796A (en) * | 2016-07-05 | 2016-10-12 | 瑞安市硕维佳电子有限公司 | Windshield wiper motor protector |
| CN106847616A (en) * | 2017-03-31 | 2017-06-13 | 扬州德宝电器科技有限公司 | A kind of self-locking power cut off delay protector |
| CN107331577A (en) * | 2017-08-22 | 2017-11-07 | 江苏怡通控制系统有限公司 | A kind of New temperature protector |
| CN107633979A (en) * | 2017-10-13 | 2018-01-26 | 江苏常恒集团控制器件制品有限公司 | One kind power-off automatic reset overload protector |
| CN111312560A (en) * | 2020-04-20 | 2020-06-19 | 南京海川电子有限公司 | Overload overtemperature power failure self-recovery protector for household appliances |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |