CN203588934U - Multifunctional motor protector - Google Patents
Multifunctional motor protector Download PDFInfo
- Publication number
- CN203588934U CN203588934U CN201320699492.9U CN201320699492U CN203588934U CN 203588934 U CN203588934 U CN 203588934U CN 201320699492 U CN201320699492 U CN 201320699492U CN 203588934 U CN203588934 U CN 203588934U
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- Prior art keywords
- protector
- overload
- nest
- electric machine
- bimetallic element
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- Withdrawn - After Issue
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Abstract
The utility model provides a multifunctional motor protector, and relates to the safe multifunctional motor protector which is provided with a built-in overload heating device and PTC heating element and is predetermined to have overload and overheating protection. The motor protector is provided with an overload self-locking protection function and an overheating self-locking protection function. The motor protector comprises a housing, a fixed seat, the PCT heating element, a moving contact, a fixed contact, a bimetallic element, a static contact sheet, a conducting strip, an adjusting plate, a left terminal and a right terminal. The fixed seat is provided with a fixed contact nest, an overload heating device nest, a PCT heating element nest and accommodating grooves for the bimetallic element and the adjusting plate, the fixed contact is arranged in the fixed contact nest of the fixed seat and welded with the static contact sheet, a bimetallic element assembly is arranged in the bimetallic element accommodating groove of a fixed seat assembly, the adjusting plate is arranged in the adjusting plate accommodating groove of the fixed seat assembly, and the PCT heating element is arranged in the PCT heating element nest of the fixed seat. The PCT heating element nest is compact in structure and is capable of carrying out comprehensive and integrated protection towards locked rotor, overload and overheating in the field of rotating motors.
Description
Technical field
What the utility model protector for electric machine 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, and 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, cuts off the electric current through motor coil, and motor is quit work; When 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: by the current anomaly of protector, become its bimetallic element heating action of ambassador, 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 New multifunction motor protector 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 the utility model patent protector for electric machine solve above-mentioned not enough problem; increase the defencive function of overload self-locking and overheated self-locking, thereby guaranteed the being perfectly safe property of the electric equipment of protected motor.
Protector for electric machine is to take following technical scheme to realize:
Protector for electric machine comprises shell, holder, PTC heater element, moving contact, fixed contact, bimetallic element, static contact, conducting strip, adjustable plate, left terminal and right terminal; The middle-end of right terminal is provided with bimetallic element pad, the other end is provided with the elastic conducting strip contacting with PTC heater element, one end of left terminal is provided with overload electro-heat equipment welding boss, the other end of left terminal is connected with conducting strip one end, the other end of conducting strip is connected with static contact, one end of static contact is provided with electro-heat equipment welding boss, and the other end of static contact is provided with the elastic conducting strip contacting with PTC heater element, and adjustable plate one end is provided with welding boss; Static contact, conducting strip, 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; the PTC heater element nest that PTC heater element is placed in holder has formed protector for electric machine assembly, protector for electric machine assembly is put after shell and fixing.
According to the power of protected motor and motor, use the difference in field; can select to excise conducting strip; 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.Overload electro-heat equipment can, according to the difference of the sectional area of material and resistivity, do wider adjustment, therefore the utility model patent protector for electric machine is applicable to the electric motor protecting in nearly all field.
Protector for electric machine operation principle:
The utility model patent protector for electric machine bimetallic element by contact and PTC parallel connection after with overload electro-heat equipment connect, bimetallic element action when 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; When 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.
The utility model patent protector for electric machine 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.
Accompanying drawing explanation
Below with reference to accompanying drawing, the utility model is described in further detail:
Fig. 1 is protector for electric machine front view.
Fig. 2 is protector for electric machine vertical view.
Embodiment
With reference to accompanying drawing 1, 2, protector for electric machine comprises shell 1, holder 2, PTC heater element 3, moving contact 4, fixed contact 5, bimetallic element 6, static contact 7, conducting strip 8, overload electro-heat equipment 9, adjustable plate 10, right terminal 11, left terminal 12, left terminal electro-heat equipment welding boss 13, static contact electro-heat equipment welding boss 14, the elastic conduction card 15 that static contact contacts with PTC heater element, the elastic conduction card 16 that right terminal contacts with PTC heater element, the bimetallic element pad 17 of right terminal, holder outer rim both sides shell holddown groove 18, 19, adjustable plate welding boss 20, fixed contact nest 21 in holder, PTC heater element nest 22 in holder, overload electro-heat equipment nest 23 in holder, bimetallic element, the resettlement groove 24 of adjustable plate and heat passage 25.Moving contact 4 is connected with one end of bimetallic element 6, forms bimetallic element assembly; Static contact 7, conducting strip 8, right terminal 11, left terminal 12 are preset in holder 2, form holder assembly; In holder assembly, be provided with the resettlement groove 24 of fixed contact nest 21, PTC heater element nest 22, overload electro-heat equipment nest 23 and bimetallic element, adjustable plate; After the fixed contact nest 21 that fixed contact 5 is placed in to holder setting is connected with static contact 7, again bimetallic element assembly is placed in to the bimetallic element of holder 2, the resettlement groove 24 of adjustable plate, be connected with the bimetallic element pad 17 of right terminal, finally adjustable plate 10 is placed in to the bimetallic element of holder 2, the resettlement groove 24 of adjustable plate, the welding boss 20 that adjustable plate 10 one end are provided with is connected with bimetallic element pad 17 centre positions of right terminal again, has formed thermal protector assembly; PTC heater element 3 is placed in to holder 2 PTC heater element nests 22; so just formed 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 18,19 with stationary fixture simultaneously.
Conducting strip can need to be selected excision, the overload electro-heat equipment of the corresponding technical parameter of bridge joint according to motor protecter.When producing when abnormal current need to be protected, motor should excise conducting strip 8; the overload electro-heat equipment 9 of corresponding technical parameter is welded to boss 14 bridge joints with left terminal electro-heat equipment welding boss 13, static contact electro-heat equipment respectively; overload electro-heat equipment 9 be placed in bimetallic element under; when can make motor abnormality electric current protect, make bimetallic element carry out overtemperature protection by sensitive temperature sensor.Add the above-mentioned PTC heater element in parallel with bimetallic element, just formed the protector for electric machine assembly that has overload protection, overtemperature protection, self-lock protection concurrently.Easy for installation and the seal request of considering protector for electric machine, left terminal 11 and right terminal 12 can be connected with lead-in wire, and shell can be selected metal or nonmetal, and encapsulation can be riveted and also can be adopted epoxy resin encapsulated.
Described overload electro-heat equipment 9 is heater element or the material of heating wire, electric hot plate or other character.
Described PTC heater element 3 adopts heater element or the material of ceramic PTC heater element or other character.
Claims (8)
1. a protector for electric machine, is characterized in that: comprise shell, holder, PTC heater element, moving contact, fixed contact, bimetallic element, static contact, conducting strip, adjustable plate, left terminal and right terminal; The middle-end of right terminal is provided with bimetallic element pad, the other end is provided with the elastic conducting strip contacting with PTC heater element, one end of left terminal is provided with overload electro-heat equipment welding boss, the other end of left terminal is connected with conducting strip one end, the other end of conducting strip is connected with the top of static contact, one end of static contact is provided with electro-heat equipment welding boss, the other end of static contact is provided with the elastic conducting strip contacting with PTC heater element, and adjustable plate one end is provided with welding boss; Static contact, conducting strip, 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; the PTC heater element nest that PTC heater element is placed in holder has formed protector for electric machine assembly, protector for electric machine assembly is put after shell and fixing.
2. protector for electric machine according to claim 1, is characterized in that: conducting strip can need to be selected excision, the overload electro-heat equipment of the corresponding technical parameter of bridge joint according to motor protecter.
3. protector for electric machine according to claim 2; it is characterized in that: described overload electro-heat equipment respectively with left terminal electro-heat equipment welding boss, static contact electro-heat equipment welding boss bridge joint, overload electro-heat equipment be placed in bimetallic element under.
4. protector for electric machine according to claim 2, is characterized in that: described overload electro-heat equipment is heating wire or electric hot plate.
5. protector for electric machine according to claim 1, is characterized in that: described PTC heater element adopts ceramic PTC heater element.
6. protector for electric machine according to claim 1, is characterized in that: bimetallic element, by moving contact and the parallel connection of PTC heater element, is then connected with overload electro-heat equipment.
7. protector for electric machine according to claim 1, is characterized in that: left terminal and right terminal are connected with lead-in wire.
8. protector for electric machine according to claim 1, is characterized in that: shell adopts metal or nonmetal, and encapsulation adopts riveted joint, or adopts epoxy resin encapsulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699492.9U CN203588934U (en) | 2013-11-08 | 2013-11-08 | Multifunctional motor protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699492.9U CN203588934U (en) | 2013-11-08 | 2013-11-08 | Multifunctional motor protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588934U true CN203588934U (en) | 2014-05-07 |
Family
ID=50586806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320699492.9U Withdrawn - After Issue CN203588934U (en) | 2013-11-08 | 2013-11-08 | Multifunctional motor protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588934U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578850B (en) * | 2013-11-08 | 2015-11-18 | 南京海川电子有限公司 | Protector for electric machine |
-
2013
- 2013-11-08 CN CN201320699492.9U patent/CN203588934U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578850B (en) * | 2013-11-08 | 2015-11-18 | 南京海川电子有限公司 | Protector for electric machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |