CN202616754U - Motor anti-blocking structure - Google Patents
Motor anti-blocking structure Download PDFInfo
- Publication number
- CN202616754U CN202616754U CN 201220152571 CN201220152571U CN202616754U CN 202616754 U CN202616754 U CN 202616754U CN 201220152571 CN201220152571 CN 201220152571 CN 201220152571 U CN201220152571 U CN 201220152571U CN 202616754 U CN202616754 U CN 202616754U
- Authority
- CN
- China
- Prior art keywords
- motor
- fuse
- control unit
- current fuse
- circuit
- 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
- 238000011084 recovery Methods 0.000 abstract 2
- 239000012634 fragment Substances 0.000 description 6
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Landscapes
- Fuses (AREA)
Abstract
The utility model relates to a stifled commentaries on classics technical field is prevented to motor, especially relates to a motor prevents stifled commentaries on classics structure for little household electrical appliances, including the motor, with the control unit that the motor is connected, its characterized in that: and a protection unit is arranged between the motor and the control unit. Preferably, the protection unit is a current fuse, and the current fuse is a self-recovery fuse. This motor prevents stifled commentaries on classics structure thereby realizes that the motor prevents stifled through set up the protection unit between motor and the control unit, and simple structure has improved the safety in utilization of motor. Particularly, the protection unit is a current fuse, and the current fuse is fused by itself to protect the safe operation of the circuit; the current fuse adopts a self-recovery fuse, does not need manual replacement and is convenient to use.
Description
Technical field
The utility model relates to motor block-proof changes technical field, relates to a kind of motor block-proof rotation structure that is used for small household appliances especially.
Background technology
Soy bean milk making machine, mixer, cooking machine etc. are in the grinding material process; Discovery is because of the material hardness relation; Fruit-vegetable fibre cross thick or stripping and slicing excessive, all might produce the situation of load greater than motor rated power, be prone to make motor rotation blockage; Thereby burn motor or make transmission mechanism damage, meeting more very brings security threat.At present common on the market screw, cutter head type juice extractor are not generally all protected the overcurrent protection structure of motor, cause motor rotation blockage easily, thereby burn out motor or make transmission device heavy wear.Existing anti-stall juice extractor has following anti-stall technology: through on the transmission device of juice extractor, clutch structure being set, when load is excessive, realize motor block-proof; On the juice extractor product, forward-reverse switch is set, when finding motor rotation blockage, the hand-guided rotating realizes discharging the food that stops up, and removes the motor rotation blockage state.
But all there is weak point in above method: after starting protection, need start to reinstall, recover clutch structure and just can reuse, this brings great inconvenience to the user; In the product use, someone keep the next door, find motor rotation blockage, must lean on manual operation could effectively remove the problem of motor rotation blockage, juice extractor all is to start the back unattended operation in use, does not thoroughly solve the hidden danger of stall like this.
Existing Chinese patent notification number CN102327062A discloses a kind of grinding beans pulp grinder and anti-blocking shifting method thereof, realizes automatic block-resistant through current detecting, improve security performance, but the anti-blocking complex structure of this grinding beans pulp grinder is inappropriate for and applies.
The utility model content
To the shortcoming of prior art, the utility model provides a kind of motor block-proof rotation structure simple in structure, realizes motor block-proof, has improved the fail safe of using.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of motor block-proof rotation structure comprises motor, the control unit that is connected with motor, it is characterized in that: be provided with protected location between said motor and the control unit.
Preferably, said protected location is the electric current fuse.The electric current fuse is directly arranged on motor and the power line that control unit is connected, the connecting and disconnecting of control unit control circuit, when electric current reached certain value, electric current was cut off in electric current fuse self fusing, thereby played the effect of protective circuit safe operation.
Preferably, said electric current fuse is a resettable fuse.
Resettable fuse is series in the circuit, and it is the low resistance state under the normal condition, and operating current can pass through smoothly; When occurring unusual big electric current in the circuit, its impedance increases (being the high value state) rapidly, effectively limits big electric current and passes through, and protective circuit is not damaged.After fault current was got rid of, the resistance of resettable fuse descended rapidly and returns to the low resistance state.
Resettable fuse is a kind of overcurrent Electronic Protection element, adopts the macromolecule organic polymer under the condition of high pressure, high temperature, vulcanization reaction, after the admixture particulate materials, forms through special processes.When circuit was short-circuited or transship, the heat that the big electric current of the resettable fuse of flowing through produces melted polymer resin, and volume increases rapidly, forms high-impedance state, and operating current reduces rapidly, thereby circuit is limited and protects; After fault was got rid of, resettable fuse is crystallisation by cooling again, volume contraction, and conducting particles forms conductive path again, and resettable fuse reverts to low resistive state, thereby accomplishes the protection to circuit, need not artificial the replacing.
Further, resettable fuse comprises the kick shell fragment, and when current overload, the temperature of fuse rises, and the radiant heat accumulation makes the action of kick shell fragment generation kick, and circuit breaks off; When temperature descended, the kick shell fragment restored to the original state, and recloses circuit automatically, thereby accomplished the protection to circuit.
Wherein, said motor is a direct current machine.
Compared with prior art, the beneficial effect of the utility model is:
The utility model motor block-proof rotation structure, thus through being set, protected location realizes motor block-proof between motor and control unit, simple in structure, improved the safety in utilization of motor.Especially, protected location is the electric current fuse, utilizes self fusing with the protective circuit safe operation of electric current fuse; The electric current fuse adopts resettable fuse, need not artificial the replacing, and is easy to use.
Description of drawings
Fig. 1 is the sketch map of the utility model motor block-proof rotation structure;
Fig. 2 is the circuit theory diagrams of resettable fuse among the utility model embodiment.
Embodiment
Below in conjunction with embodiment the utility model is further described.
Extremely shown in Figure 2 like Fig. 1 is the embodiment of the utility model motor block-proof rotation structure, comprises motor, the control unit that is connected with motor, is provided with protected location between motor and the control unit.In the present embodiment, the connecting and disconnecting of control unit control circuit, motor is a direct current machine 10, and control unit is a pcb board 20, and protected location is a resettable fuse 30.
Heat because of current conversion during the fuse energising can make the temperature of melt rise.When the overload current of running current or permission passed through, the heat that electric current produces was through melt, the radiation of housing ambient, and the heat that distributes through modes such as convection current and conduction can reach balance gradually with the heat that produces.If radiating rate does not catch up with adstante febre, these heats will be on melt accumulation gradually, melt temperature is risen, in case temperature reaches and when surpassing the fusing point of melt material, melt is melted, thereby turn-off current plays the effect of safeguard protection.
The resettable fuse 30 of present embodiment comprises kick shell fragment 31, and when circuit was short-circuited or transship, the big electric current of the resettable fuse 30 of flowing through produced heat, and the radiant heat accumulation makes the action of kick shell fragment generation kick, and circuit breaks off; After fault was got rid of, resettable fuse 30 temperature descended, and kick shell fragment 31 restores to the original state, and recloses circuit automatically, thereby accomplishes the protection to circuit, need not artificial the replacing.This motor block-proof rotation structure, thus through being set, resettable fuse 30 realizes motor block-proofs between direct current machine 10 and pcb board 20, simple in structure, improved the safety in utilization of direct current machine 10, resettable fuse 30 need not artificial the replacing, and is easy to use.
Claims (4)
1. a motor block-proof rotation structure comprises motor, the control unit that is connected with motor, it is characterized in that: be provided with protected location between said motor and the control unit.
2. motor block-proof rotation structure according to claim 1 is characterized in that: said protected location is the electric current fuse.
3. motor block-proof rotation structure according to claim 2 is characterized in that: said electric current fuse is a resettable fuse.
4. according to each described motor block-proof rotation structure of claim 1 to 3, it is characterized in that: said motor is a direct current machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152571 CN202616754U (en) | 2012-04-12 | 2012-04-12 | Motor anti-blocking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220152571 CN202616754U (en) | 2012-04-12 | 2012-04-12 | Motor anti-blocking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616754U true CN202616754U (en) | 2012-12-19 |
Family
ID=47350424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220152571 Expired - Lifetime CN202616754U (en) | 2012-04-12 | 2012-04-12 | Motor anti-blocking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616754U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115183A (en) * | 2013-02-21 | 2013-05-22 | 北京硕人时代科技有限公司 | Automatic electric unblocking valve |
| CN103457243A (en) * | 2013-09-02 | 2013-12-18 | 深圳市大族激光科技股份有限公司 | Direct current motor protection circuit |
| US10454263B2 (en) | 2014-10-01 | 2019-10-22 | Carrier Corporation | Compressor motor overload detection |
-
2012
- 2012-04-12 CN CN 201220152571 patent/CN202616754U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115183A (en) * | 2013-02-21 | 2013-05-22 | 北京硕人时代科技有限公司 | Automatic electric unblocking valve |
| CN103115183B (en) * | 2013-02-21 | 2015-05-20 | 北京硕人时代科技股份有限公司 | Automatic electric unblocking valve |
| CN103457243A (en) * | 2013-09-02 | 2013-12-18 | 深圳市大族激光科技股份有限公司 | Direct current motor protection circuit |
| US10454263B2 (en) | 2014-10-01 | 2019-10-22 | Carrier Corporation | Compressor motor overload detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: MIDEA GROUP CO., LTD. Free format text: FORMER NAME: MEIDI GROUP CO. LTD. |
|
| CP03 | Change of name, title or address |
Address after: 528311 Guangdong, Foshan, Beijiao, the United States, the United States and the United States on the avenue of the United States, the headquarters of the United States building B floor, District, 26-28 Patentee after: MIDEA GROUP Co.,Ltd. Address before: 528311 Beijiao, Foshan, Shunde District, the town of Guangdong, the United States Avenue, No. 6 Patentee before: Midea Group |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
|
| CX01 | Expiry of patent term |