CN202103515U - Structure capable of improving protective grade of external-rotor motor - Google Patents
Structure capable of improving protective grade of external-rotor motor Download PDFInfo
- Publication number
- CN202103515U CN202103515U CN2011202239466U CN201120223946U CN202103515U CN 202103515 U CN202103515 U CN 202103515U CN 2011202239466 U CN2011202239466 U CN 2011202239466U CN 201120223946 U CN201120223946 U CN 201120223946U CN 202103515 U CN202103515 U CN 202103515U
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- CN
- China
- Prior art keywords
- rotor
- tongue
- groove
- end cap
- main shaft
- 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
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Abstract
The utility model relates to a structure capable of improving protective grade of an external-rotor motor, which is characterized in that: a stator and a stator coil are installed on a main shaft, two internal ends of the main shaft are respectively provided with a bearing, a motor rotor is arranged outside the stator coil, and the motor rotor is installed on the main shaft through the bearing in a rotating way; one end part of the main shaft is connected with a tightening bolt in a threading way, the main shaft is provided with an end cover through the tightening bolt, the end cover is provided with a leading-out wire, the end cover is matched with the motor rotor to wrap the stator coil, the end surface of the motor rotor is provided with a rotor tongue and groove along the circumferential direction, the end surface of the end cover is provided with an end cover tongue and groove along the circumferential direction, the rotor tongue and groove is matched with the end cover tongue and groove in a plugging way, a gap is arranged between the rotor tongue and groove and the end surface of the end cover, a gap is formed between the end cover tongue and groove and the end surface of the motor rotor, so a labyrinth-type gap is formed between the end surface of the motor rotor and the end surface of the end cover. The motor rotor and the end cover are plugged with each other through teeth, and the labyrinth structure is formed between the motor rotor and the end cover, so the splashed water from different directions can be prevented from entering the motor, and the protective grade of the motor can reach IP54.
Description
Technical field
The utility model relates to the outer rotor motor technical field, especially a kind of structure that can improve the external rotor electric machine degree of protection.
Background technology
Along with the continuous expansion of the scope of application of external rotor electric machine, the environmental requirement that external rotor electric machine is faced is increasingly high, and the degree of protection of motor is had higher requirement.External rotor is applied to the occasion that there is requirement in the space because of its compact conformation, such as blower fan.Because of external rotor electric machine outside anti-package stator, be difficult to so will accomplish good degree of protection, general can only accomplish IP44.Seriously restricted the field of employment of supporting blower fan.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that exists in the prior art, provides a kind of liquid that can improve the degree of protection of motor, prevent the outside effectively to get into the structure that can improve the external rotor electric machine degree of protection in the electric component such as motor windings.
The technical scheme that provides according to the utility model; The said structure that can improve the external rotor electric machine degree of protection; Be included in stator and the stator coil installed on the main shaft; At the inner two ends of main shaft bearing is installed, is provided with rotor in the outside of stator coil, described rotor is rotatably installed on the main shaft through bearing; End at main shaft is bolted with fastening bolt; On main shaft, through described fastening bolt end cap is installed, lead-out wire is installed on end cap, end cap cooperates with described rotor stator coil is contained; Vehicle Processing at the end face of rotor goes out tongue and groove; In the corresponding Vehicle Processing of the end face of end cap tongue and groove is arranged, rotor tongue and groove and end cap tongue and groove inserting mutually close, and have the gap between the end face of rotor tongue and groove and end cap; Have the gap between the end face of end cap tongue and groove and rotor, make between the end face of the end face of rotor and end cap, to form the labyrinth-like slit.
The integral body of described rotor tongue and groove is circular, and the section of rotor tongue and groove is a rectangle, and the rotor tongue and groove has concentric setting two or more.The integral body of described end cap tongue and groove is circular, and the section of end cap tongue and groove is a rectangle, and the end cap tongue and groove has concentric setting two or more.
On lead-out wire, be enclosed with protective ring.
The utility model adopts has tongue and groove each other to inserting between rotor and the end cap, keep rational gap, in the gap, is coated with an amount of high temperature viscous grease, can play to prevent most dust intrusion, guarantees can running well of electrical equipment.
At two groups of labyrinth structures that rotor and end cap are formed, can prevent that all directions from splashing and the water intrusion that comes, whole motor can reach the degree of protection of IP54;
This structure does not increase the processing cost of motor, but degree of protection is improved a lot.
Description of drawings
Fig. 1 is the overall structure sketch map of the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing and embodiment the utility model is described further.
As shown in the figure: this can improve the structure of external rotor electric machine degree of protection; Be included in stator 3 and the stator coil 4 installed on the main shaft 9; Through parts such as shaft block ring, butterfly springs bearing 2 is installed at main shaft 9 inner two ends; Be provided with rotor 1 in the outside of stator coil 4, described rotor 1 is rotatably installed on the main shaft 9 through bearing 2; End at main shaft 9 is bolted with fastening bolt 8; On fastening bolt 8, sealing cap is installed; On main shaft 9, through described fastening bolt 8 end cap 7 is installed, lead-out wire 5 is installed on end cap 7, end cap 7 cooperates with described rotor 1 stator coil 4 is contained; End face at rotor 1 is provided with the rotor double wedge 1.1 that circumferentially is provided with along it; End face at end cap 7 is provided with the end cap tongue and groove 7.1 that circumferentially is provided with along it, and rotor tongue and groove 1.1 plugs with end cap tongue and groove 7.1 and cooperates, and has the gap between the end face of rotor tongue and groove 1.1 and end cap 7; Have the gap between the end face of end cap tongue and groove 7.1 and rotor 1, make between the end face of the end face of rotor 1 and end cap 7, to form labyrinth-like slit 10.
The integral body of described rotor tongue and groove 1.1 is circular, and the section of rotor tongue and groove 1.1 is a rectangle, and rotor tongue and groove 1.1 has concentric setting two or more.The integral body of described end cap tongue and groove 7.1 is circular, and the section of end cap tongue and groove 7.1 is a rectangle, and end cap tongue and groove 7.1 has concentric setting two or more.
On lead-out wire 5, be enclosed with protective ring 6.
The utility model is after stator coil 4 energisings; Produce 1 rotation of field drives rotor, between rotor 1 and end cap 7, cooperate rotor tongue and groove 1.1 and the end cap tongue and groove 7.1 that has adopted mutual grafting to cooperate, make to have labyrinth-like slit 10 between rotor 1 and the end cap 7; Before the use; In labyrinth-like slit 10, insert the high temperature viscous grease, thus when work dust can't enter into motor internal in a large number, simultaneously all directions splash and the water that comes because of action of centrifugal force; Be difficult to invade the electrical equipment position of motor internal, can reach the degree of protection of IP54.
Claims (4)
1. structure that can improve the external rotor electric machine degree of protection; Be included in main shaft (9) and go up stator (3) and the stator coil of installing (4); At the inner two ends of main shaft (9) bearing (2) is installed; Be provided with rotor (1) in the outside of stator coil (4), described rotor (1) is rotatably installed on the main shaft (9) through bearing (2); Be bolted with fastening bolt (8) in an end of main shaft (9); Upward end cap (7) is installed at main shaft (9) through described fastening bolt (8); Lead-out wire (5) is installed on end cap (7); End cap (7) cooperates with described rotor (1) stator coil (4) is contained; It is characterized in that: the end face at rotor (1) is provided with the rotor tongue and groove (1.1) that circumferentially is provided with along it; End face at end cap (7) is provided with the end cap tongue and groove (7.1) that circumferentially is provided with along it, and rotor tongue and groove (1.1) plugs with end cap tongue and groove (7.1) and cooperates, and has the gap between the end face of rotor tongue and groove (1.1) and end cap (7); Have the gap between the end face of end cap tongue and groove (7.1) and rotor (1), make between the end face of the end face of rotor (1) and end cap (7), to form labyrinth-like slit (10).
2. the structure that can improve the external rotor electric machine degree of protection as claimed in claim 1; It is characterized in that: the integral body of described rotor tongue and groove (1.1) is circular; The section of rotor tongue and groove (1.1) is a rectangle, and rotor tongue and groove (1.1) has concentric setting two or more.
3. the structure that can improve the external rotor electric machine degree of protection as claimed in claim 1; It is characterized in that: the integral body of described end cap tongue and groove (7.1) is circular; The section of end cap tongue and groove (7.1) is a rectangle, and end cap tongue and groove (7.1) has concentric setting two or more.
4. the structure that can improve the external rotor electric machine degree of protection as claimed in claim 1 is characterized in that: on lead-out wire (5), be enclosed with protective ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202239466U CN202103515U (en) | 2011-06-28 | 2011-06-28 | Structure capable of improving protective grade of external-rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202239466U CN202103515U (en) | 2011-06-28 | 2011-06-28 | Structure capable of improving protective grade of external-rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103515U true CN202103515U (en) | 2012-01-04 |
Family
ID=45389513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202239466U Expired - Lifetime CN202103515U (en) | 2011-06-28 | 2011-06-28 | Structure capable of improving protective grade of external-rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103515U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231581A (en) * | 2011-06-28 | 2011-11-02 | 无锡锡山特种风机有限公司 | Structure raising protection grade of external rotor motor |
| CN114076106A (en) * | 2020-08-18 | 2022-02-22 | 佛山市顺德区美的洗涤电器制造有限公司 | Motor assembly, fan and range hood |
-
2011
- 2011-06-28 CN CN2011202239466U patent/CN202103515U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102231581A (en) * | 2011-06-28 | 2011-11-02 | 无锡锡山特种风机有限公司 | Structure raising protection grade of external rotor motor |
| CN114076106A (en) * | 2020-08-18 | 2022-02-22 | 佛山市顺德区美的洗涤电器制造有限公司 | Motor assembly, fan and range hood |
| CN114076106B (en) * | 2020-08-18 | 2024-03-12 | 佛山市顺德区美的洗涤电器制造有限公司 | Motor assembly, fan and range hood |
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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: 20120104 |
|
| CX01 | Expiry of patent term |