WO2017067125A1 - Waterproof structure for external rotor motor - Google Patents
Waterproof structure for external rotor motor Download PDFInfo
- Publication number
- WO2017067125A1 WO2017067125A1 PCT/CN2016/075895 CN2016075895W WO2017067125A1 WO 2017067125 A1 WO2017067125 A1 WO 2017067125A1 CN 2016075895 W CN2016075895 W CN 2016075895W WO 2017067125 A1 WO2017067125 A1 WO 2017067125A1
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- WIPO (PCT)
- Prior art keywords
- outer rotor
- annular groove
- plastic
- rotor motor
- waterproof structure
- Prior art date
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Definitions
- the utility model relates to a waterproof structure of an outer rotor motor, belonging to the technical field of motors.
- the purpose of the utility model is to provide a waterproof structure of an outer rotor motor, which has a simple structure and good waterproof capability, effectively improves the reliability of the use of the outer rotor motor and prolongs the service life of the outer rotor motor.
- the waterproof structure of the outer rotor motor comprises a rotating shaft, an outer rotor and a plastic sealing stator.
- the outer rotor is sleeved outside the plastic sealing stator.
- the rotating shaft is installed in the middle of the plastic sealing stator and is connected with the outer rotor.
- the plastic sealing stator comprises a stator core.
- End insulation, coil winding and plastic body the end insulation is mounted on the end face of the stator core, the coil winding is wound around the end insulation, and the plastic body connects the stator core, the end insulation and the coil winding into one body
- a plastic end plate is disposed on one end of the stator core and the plastic sealing body
- a first annular groove is disposed on a periphery of the stator core and a bottom surface of the plastic sealing end plate
- a ring is disposed on an outer edge of the outer rotor near an end of the plastic end plate a first protection ring
- the first protection ring extends into the first annular groove
- the first protection ring comprises a root portion, a water blocking portion and an inclined portion connected between the root portion and the water blocking portion, the root portion is installed outside On the outer edge of the rotor end, the inclined portion extends obliquely outward, and at least a portion of the inclined portion projects into the first annular groove, and the water retaining portion starts from the end of
- the annular first groove portion is provided on the outer side surface of the second protection ring.
- the first stop hook protrudes from the end of the second protection ring toward one side of the water retaining portion.
- the annular second groove portion is disposed on the outer edge of the inner side wall and the outer rotor end portion of the second annular groove.
- the second stop hook protrudes from one end of the outer rotor toward one side of the second guard ring.
- the second protective ring and the plastic end plate are mounted together by injection molding.
- the root is mounted on the outer edge of the end of the outer rotor, the inclined portion extends obliquely outward, and at least a portion of the inclined portion projects into the first annular groove, and the water blocking portion starts from the end of the inclined portion in the axial direction Extending into the first annular groove, the inclined portion forms a first layer of protection.
- the outer rotor motor is placed horizontally horizontally, the water is first blocked by the inclined portion so that water can flow along the outer rotor.
- the outer edge of the flow away reducing the possibility of water entering the outer rotor motor from the gap between the outer rotor and the plastic end plate, improving the reliability of the outer rotor motor and prolonging the service life of the outer rotor motor;
- an annular first groove portion is arranged on the outer side surface of the second protection ring, thereby improving the waterproof effect of the outer rotor motor, even if the water breaks through the first protection ring and enters the gap between the outer rotor and the plastic end plate, The water also flows into the first groove portion and flows down along the first groove portion, greatly reducing the possibility that water breaks through the second protection ring and enters the inside of the outer rotor motor from the gap between the outer rotor and the plastic end plate;
- an annular second groove portion is disposed on the outer edge of the inner side wall and the outer rotor end portion of the second annular groove to form a third layer of protection, thereby improving the waterproof effect of the outer rotor motor, even if the water breaks through Second protection
- the ring enters the gap between the outer rotor and the plastic end plate, and the water also flows into the second groove portion and flows down along the second groove portion, thereby greatly reducing the water breaking through the third layer of protection and from the outer rotor and the plastic end plate. The possibility of a gap between entering the inside of the outer rotor motor.
- FIG. 1 is a schematic structural view of a conventional plastic motor
- Figure 2 is a perspective view of the plastic motor in the embodiment
- Figure 3 is a schematic structural view of a plastic motor in the embodiment
- Figure 4 is a partial enlarged view of a portion A of Figure 3;
- Figure 5 is a perspective view of the outer rotor in the embodiment
- Figure 6 is a perspective view of the molded stator in the embodiment.
- Embodiment 1 As shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, this embodiment is a waterproof structure of an outer rotor motor, comprising a rotating shaft 1, an outer rotor 2, a plastically sealed stator 3, and an outer rotor 2
- the sleeve 1 is disposed outside the plastic stator 3, and the rotating shaft 1 is installed in the middle of the plastic stator 3 and is connected with the outer rotor 2.
- the plastic stator 3 includes a stator core 31, an end insulation 32, a coil winding 33 and a molding body 34.
- the partial insulation 32 is mounted on the end surface of the stator core 31, and the coil winding 33 is wound around the end insulation 32.
- the plastic sealing body 34 connects the stator core 31, the end insulation 32 and the coil winding 33 into one body.
- One end of the iron core 31 and the plastic sealing body 34 are provided with a plastic end plate 35.
- a first annular groove 351 is disposed, and the outer rotor 2 is adjacent to one end of the plastic end plate 35.
- An annular first protective ring 4 is disposed on the edge, the first protective ring 4 extends into the first annular groove 351, and the outer rotor 3 is an alternating outer rotor comprising a rotor core and a cast aluminum piece,
- the first protection ring 4 may be a separate part that is additionally mounted on the cast aluminum piece, or is cast A part that is integrally formed from aluminum.
- the first guard ring 4 includes a root portion 41, a water blocking portion 43 and an inclined portion 42 connected between the root portion 41 and the water blocking portion 43.
- the root portion 41 is mounted on the outer edge of the end portion of the outer rotor 2, and the inclined portion 42 is inclined.
- the ground extends to the outside, and at least a portion of the inclined portion 42 extends into the first annular groove 351, the water retaining portion 43 extends from the end of the inclined portion 42 in the axial direction and into the first annular groove 351.
- the inclined portion 42 forms a first layer of protection.
- a second annular groove 20 is formed between the first protection ring 4 and the outer edge of the end of the outer rotor 2, and an annular second protection ring 5 is disposed on the bottom wall of the first annular groove 351, and the second protection ring 5 projects into the second annular groove 20.
- the second protection ring 5 forms a second layer of protection. If the water breaks through the first protection ring 4 and enters the gap between the outer rotor 2 and the plastic end plate 35, the water will flow to the second protection ring 5 and It flows down along the second protection ring 5 without entering the inside of the outer rotor motor, and the second protection ring 5 is provided to effectively improve the waterproof effect of the outer rotor motor.
- An annular first groove portion 50 is disposed on the outer side surface of the second protection ring 5, and water flowing to the outer side surface of the second protection ring 5 eventually flows into the first groove portion 50 and along the first groove The portion 50 flows downward, greatly reducing the possibility of water breaking through the second guard ring and entering the inside of the outer rotor motor from the gap between the outer rotor and the plastic end plate.
- a first stop hook 51 protrudes from an end of the second protection ring 5 toward a side of the water retaining portion 43.
- the first stop hook 51 can effectively block the water in the first groove portion 50, thereby reducing water breakthrough.
- An annular second groove portion 21 is disposed on the inner side wall of the second annular groove 20 and the outer edge of the outer rotor 2 to form a third layer of protection, even if the water breaks through the second protection ring 5 and enters the outer rotor 2 With the gap between the plastic end plates 35, water also flows into the second groove portion 21 and flows down along the second groove portion 21, greatly reducing water breakthrough through the third layer of protection and from between the outer rotor and the plastic end plate. The possibility of the gap entering the inside of the outer rotor motor.
- a second stop hook 22 is protruded from an end of the outer rotor 2 toward a side of the second guard ring 5, and the second stop hook 22 can effectively block the water in the second groove portion 21, thereby reducing water breakthrough.
- Three layers of protection and from the outside The gap between the rotor and the plastic end plate enters the inside of the outer rotor motor.
- the second protection ring 5 and the plastic sealing end plate 35 are assembled by injection molding, and the production process is simple and the structural strength is large.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A waterproof structure for an external rotor motor comprises a rotation shaft (1), an external rotor (2), and a plastic packaged stator (3). The external rotor is sleeved outside the plastic packaged stator. The rotation shaft is mounted in the middle of the plastic packaged stator, and is connected together with the external rotor. A first annular groove (351) is disposed on the periphery of a stator core (31) and the bottom surface of the plastic packaged end plate (35). An annular first guarding ring (4) is disposed on an outer edge of the external rotor close to one end of the plastic packaged end plate. The first guarding ring extends into the first annular groove. The first guarding ring comprises a root (41), a water prevention portion (43), and an oblique portion (42) connected between the root and the water prevention portion. The root is mounted on the outer edge of the external rotor. The oblique portion obliquely extends outwards, and at least partially extends into the first annular groove. The water prevention portion extends from an end portion of the oblique portion into the first annular groove along the axial direction. The waterproof structure has a simple structure and a good waterproof capability, effectively improves the use reliability of the external rotor motor, and prolongs the service life of the external rotor motor.
Description
本实用新型涉及一种外转子电机的防水结构,属于电机技术领域。The utility model relates to a waterproof structure of an outer rotor motor, belonging to the technical field of motors.
目前,市面上大部分外转子电机的防水能力较差,外转子与定子之间的配合密封不够好,难以满足在较恶劣的环境中使用。如图1所示,当外转子电机100的使用环境是户外或者水分较多的室内时,水很容易从外转子101与定子的塑封端板102之间的间隙103进入到外转子电机内部,导致外转子电机损坏或者寿命缩短。若是外转子电机轴向水平放置的话,防水的能力会更差。At present, most of the outer rotor motors on the market have poor waterproofing ability, and the matching seal between the outer rotor and the stator is not good enough to be used in a harsh environment. As shown in FIG. 1, when the use environment of the outer rotor motor 100 is outdoors or a room with a lot of moisture, water easily enters the outer rotor motor from the gap 103 between the outer rotor 101 and the molded end plate 102 of the stator. The outer rotor motor is damaged or the life is shortened. If the outer rotor motor is placed horizontally horizontally, the waterproofing ability will be worse.
发明内容:Summary of the invention:
本实用新型的目的是提供一种外转子电机的防水结构,其结构简单,防水能力好,有效提高外转子电机使用的可靠性以及延长外转子电机的使用寿命。The purpose of the utility model is to provide a waterproof structure of an outer rotor motor, which has a simple structure and good waterproof capability, effectively improves the reliability of the use of the outer rotor motor and prolongs the service life of the outer rotor motor.
本实用新型的目的是通过下述技术方案予以实现的。The object of the present invention is achieved by the following technical solutions.
一种外转子电机的防水结构,包括转轴、外转子和塑封定子,外转子套设于塑封定子外面,转轴安装在塑封定子中间并且与外转子连接在一起,所述塑封定子包括定子铁芯、端部绝缘、线圈绕组和塑封体,端部绝缘安装在定子铁芯的端面上,线圈绕组绕设于端部绝缘上,塑封体把所述定子铁芯、端部绝缘和线圈绕组连结成一体,于定子铁芯一端、塑封体上设置有塑封端板,于定子铁芯***、塑封端板的底面上设置有第一环形凹槽,在外转子靠近塑封端板一端的外缘上设置有环形的第一防护圈,第一防护圈伸入到第一环形凹槽里面,所述的第一防护圈包括根部、挡水部以及连接在根部与挡水部之间的倾斜部,根部安装在外转子端部的外缘上,倾斜部倾斜地向外侧延伸,并且至少部分的倾斜部伸入到第一环形凹槽里面,挡水部从倾斜部的端部开始沿轴向延伸伸入到第一环形凹槽里面。The waterproof structure of the outer rotor motor comprises a rotating shaft, an outer rotor and a plastic sealing stator. The outer rotor is sleeved outside the plastic sealing stator. The rotating shaft is installed in the middle of the plastic sealing stator and is connected with the outer rotor. The plastic sealing stator comprises a stator core. End insulation, coil winding and plastic body, the end insulation is mounted on the end face of the stator core, the coil winding is wound around the end insulation, and the plastic body connects the stator core, the end insulation and the coil winding into one body a plastic end plate is disposed on one end of the stator core and the plastic sealing body, and a first annular groove is disposed on a periphery of the stator core and a bottom surface of the plastic sealing end plate, and a ring is disposed on an outer edge of the outer rotor near an end of the plastic end plate a first protection ring, the first protection ring extends into the first annular groove, the first protection ring comprises a root portion, a water blocking portion and an inclined portion connected between the root portion and the water blocking portion, the root portion is installed outside On the outer edge of the rotor end, the inclined portion extends obliquely outward, and at least a portion of the inclined portion projects into the first annular groove, and the water retaining portion starts from the end of the inclined portion in the axial direction The extension extends into the first annular groove.
上述在第一防护圈与外转子端部的外缘之间形成第二环形凹槽,在第一环
形凹槽的底壁上设置有环形的第二防护圈,第二防护圈伸入到第二环形凹槽里面。Forming a second annular groove between the first guard ring and the outer edge of the outer rotor end, in the first ring
The bottom wall of the groove is provided with an annular second protection ring, and the second protection ring extends into the second annular groove.
上述在第二防护圈的外侧面上设置有环形的第一槽部。The annular first groove portion is provided on the outer side surface of the second protection ring.
上述从第二防护圈的端部上往挡水部的一侧伸出有第一挡钩。The first stop hook protrudes from the end of the second protection ring toward one side of the water retaining portion.
上述在第二环形凹槽内侧壁、外转子端部的外缘上设置有环形的第二槽部。The annular second groove portion is disposed on the outer edge of the inner side wall and the outer rotor end portion of the second annular groove.
上述从外转子的端部上往第二防护圈的一侧伸出有第二挡钩。The second stop hook protrudes from one end of the outer rotor toward one side of the second guard ring.
上述第二防护圈与塑封端板通过注塑安装在一起。The second protective ring and the plastic end plate are mounted together by injection molding.
本实用新型与现有技术相比,具有如下效果:Compared with the prior art, the utility model has the following effects:
1)根部安装在外转子端部的外缘上,倾斜部倾斜地向外侧延伸,并且至少部分的倾斜部伸入到第一环形凹槽里面,挡水部从倾斜部的端部开始沿轴向延伸伸入到第一环形凹槽里面,这样倾斜部就形成了第一层防护,当外转子电机轴向水平放置时,水首先会被倾斜部挡在出面,以使水能沿着外转子的外缘流走,减少水从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性,提高外转子电机使用的可靠性以及延长外转子电机的使用寿命;1) The root is mounted on the outer edge of the end of the outer rotor, the inclined portion extends obliquely outward, and at least a portion of the inclined portion projects into the first annular groove, and the water blocking portion starts from the end of the inclined portion in the axial direction Extending into the first annular groove, the inclined portion forms a first layer of protection. When the outer rotor motor is placed horizontally horizontally, the water is first blocked by the inclined portion so that water can flow along the outer rotor. The outer edge of the flow away, reducing the possibility of water entering the outer rotor motor from the gap between the outer rotor and the plastic end plate, improving the reliability of the outer rotor motor and prolonging the service life of the outer rotor motor;
2)在第一防护圈与外转子端部的外缘之间形成第二环形凹槽,在第一环形凹槽的底壁上设置有环形的第二防护圈,第二防护圈伸入到第二环形凹槽里面,这样第二防护圈就形成了第二层防护,如果水突破第一防护圈进入到外转子与塑封端板之间的间隙,此时水会流到第二防护圈上并沿着第二防护圈往下流走而不会进入到外转子电机内部,通过设置第二防护圈有效地提高外转子电机的防水效果;2) forming a second annular groove between the first protection ring and the outer edge of the outer rotor end, and an annular second protection ring is disposed on the bottom wall of the first annular groove, and the second protection ring extends into The second annular groove is inside, so that the second protection ring forms a second layer of protection. If the water breaks through the first protection ring and enters the gap between the outer rotor and the plastic end plate, the water will flow to the second protection ring. Up and down along the second protection ring without entering the inside of the outer rotor motor, and effectively improving the waterproof effect of the outer rotor motor by providing the second protection ring;
3)在第二防护圈的外侧面上设置有环形的第一槽部,以此提高外转子电机的防水效果,即使水突破第一防护圈进入到外转子与塑封端板之间的间隙,水也会流到第一槽部里面沿着第一槽部往下流走,大大减少水突破第二防护圈并且从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性;3) an annular first groove portion is arranged on the outer side surface of the second protection ring, thereby improving the waterproof effect of the outer rotor motor, even if the water breaks through the first protection ring and enters the gap between the outer rotor and the plastic end plate, The water also flows into the first groove portion and flows down along the first groove portion, greatly reducing the possibility that water breaks through the second protection ring and enters the inside of the outer rotor motor from the gap between the outer rotor and the plastic end plate;
4)在第二环形凹槽内侧壁、外转子端部的外缘上设置有环形的第二槽部,以此形成第三层防护,以此提高外转子电机的防水效果,即使水突破第二防护
圈进入到外转子与塑封端板之间的间隙,水也会流到第二槽部里面沿着第二槽部往下流走,大大减少水突破第三层防护并且从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性。4) an annular second groove portion is disposed on the outer edge of the inner side wall and the outer rotor end portion of the second annular groove to form a third layer of protection, thereby improving the waterproof effect of the outer rotor motor, even if the water breaks through Second protection
The ring enters the gap between the outer rotor and the plastic end plate, and the water also flows into the second groove portion and flows down along the second groove portion, thereby greatly reducing the water breaking through the third layer of protection and from the outer rotor and the plastic end plate. The possibility of a gap between entering the inside of the outer rotor motor.
图1是现有塑封电机的结构示意图;1 is a schematic structural view of a conventional plastic motor;
图2是实施例中塑封电机的立体图;Figure 2 is a perspective view of the plastic motor in the embodiment;
图3是实施例中塑封电机的结构示意图;Figure 3 is a schematic structural view of a plastic motor in the embodiment;
图4是图3中A部分的局部放大图;Figure 4 is a partial enlarged view of a portion A of Figure 3;
图5是实施例中外转子的立体图;Figure 5 is a perspective view of the outer rotor in the embodiment;
图6是实施例中塑封定子的立体图。Figure 6 is a perspective view of the molded stator in the embodiment.
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.
实施例一:如图2、图3、图4、图5和图6所示,本实施例是一种外转子电机的防水结构,包括转轴1、外转子2和塑封定子3,外转子2套设于塑封定子3外面,转轴1安装在塑封定子3中间并且与外转子2连接在一起,所述塑封定子3包括定子铁芯31、端部绝缘32、线圈绕组33和塑封体34,端部绝缘32安装在定子铁芯31的端面上,线圈绕组33绕设于端部绝缘32上,塑封体34把所述定子铁芯31、端部绝缘32和线圈绕组33连结成一体,于定子铁芯31一端、塑封体34上设置有塑封端板35,于定子铁芯31***、塑封端板35的底面上设置有第一环形凹槽351,在外转子2靠近塑封端板35一端的外缘上设置有环形的第一防护圈4,第一防护圈4伸入到第一环形凹槽351里面,所述外转子3是交流外转子,其包括转子铁芯和铸铝件,所述第一防护圈4可以是另外安装在铸铝件上的独立零件,或者是与铸铝件一体成形的零件。Embodiment 1: As shown in FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, this embodiment is a waterproof structure of an outer rotor motor, comprising a rotating shaft 1, an outer rotor 2, a plastically sealed stator 3, and an outer rotor 2 The sleeve 1 is disposed outside the plastic stator 3, and the rotating shaft 1 is installed in the middle of the plastic stator 3 and is connected with the outer rotor 2. The plastic stator 3 includes a stator core 31, an end insulation 32, a coil winding 33 and a molding body 34. The partial insulation 32 is mounted on the end surface of the stator core 31, and the coil winding 33 is wound around the end insulation 32. The plastic sealing body 34 connects the stator core 31, the end insulation 32 and the coil winding 33 into one body. One end of the iron core 31 and the plastic sealing body 34 are provided with a plastic end plate 35. On the outer periphery of the stator core 31 and the bottom surface of the plastic sealing end plate 35, a first annular groove 351 is disposed, and the outer rotor 2 is adjacent to one end of the plastic end plate 35. An annular first protective ring 4 is disposed on the edge, the first protective ring 4 extends into the first annular groove 351, and the outer rotor 3 is an alternating outer rotor comprising a rotor core and a cast aluminum piece, The first protection ring 4 may be a separate part that is additionally mounted on the cast aluminum piece, or is cast A part that is integrally formed from aluminum.
所述的第一防护圈4包括根部41、挡水部43以及连接在根部41与挡水部43之间的倾斜部42,根部41安装在外转子2端部的外缘上,倾斜部42倾斜地向外侧延伸,并且至少部分的倾斜部42伸入到第一环形凹槽351里面,挡水部
43从倾斜部42的端部开始沿轴向延伸伸入到第一环形凹槽351里面。这样倾斜部42就形成了第一层防护,当外转子电机轴向水平放置时,水首先会被倾斜部42挡在出面,以使水能沿着外转子2的外缘流走,减少水从外转子2与塑封端板35之间的间隙进入到外转子电机内部的可能性,提高外转子电机使用的可靠性以及延长外转子电机的使用寿命.同样的,当外转子电机轴向竖直放置时,其防水原理与外转子电机轴向水平放置时的相同,在此不再赘述。The first guard ring 4 includes a root portion 41, a water blocking portion 43 and an inclined portion 42 connected between the root portion 41 and the water blocking portion 43. The root portion 41 is mounted on the outer edge of the end portion of the outer rotor 2, and the inclined portion 42 is inclined. The ground extends to the outside, and at least a portion of the inclined portion 42 extends into the first annular groove 351, the water retaining portion
43 extends from the end of the inclined portion 42 in the axial direction and into the first annular groove 351. Thus, the inclined portion 42 forms a first layer of protection. When the outer rotor motor is axially placed horizontally, the water is first blocked by the inclined portion 42 so that water can flow along the outer edge of the outer rotor 2, reducing water. The possibility of entering the inside of the outer rotor motor from the gap between the outer rotor 2 and the plastic end plate 35 improves the reliability of the outer rotor motor and prolongs the service life of the outer rotor motor. Similarly, when the outer rotor motor is axially vertical When it is placed straight, the waterproof principle is the same as that when the outer rotor motor is placed horizontally, and will not be described here.
在第一防护圈4与外转子2端部的外缘之间形成第二环形凹槽20,在第一环形凹槽351的底壁上设置有环形的第二防护圈5,第二防护圈5伸入到第二环形凹槽20里面。这样第二防护圈5就形成了第二层防护,如果水突破第一防护圈4进入到外转子2与塑封端板35之间的间隙,此时水会流到第二防护圈5上并沿着第二防护圈5往下流走而不会进入到外转子电机内部,通过设置第二防护圈5有效地提高外转子电机的防水效果。A second annular groove 20 is formed between the first protection ring 4 and the outer edge of the end of the outer rotor 2, and an annular second protection ring 5 is disposed on the bottom wall of the first annular groove 351, and the second protection ring 5 projects into the second annular groove 20. Thus, the second protection ring 5 forms a second layer of protection. If the water breaks through the first protection ring 4 and enters the gap between the outer rotor 2 and the plastic end plate 35, the water will flow to the second protection ring 5 and It flows down along the second protection ring 5 without entering the inside of the outer rotor motor, and the second protection ring 5 is provided to effectively improve the waterproof effect of the outer rotor motor.
在第二防护圈5的外侧面上设置有环形的第一槽部50,流到第二防护圈5外侧面上的水最终会流入到第一槽部50里面,并且会沿着第一槽部50往下流走,大大减少水突破第二防护圈并且从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性。An annular first groove portion 50 is disposed on the outer side surface of the second protection ring 5, and water flowing to the outer side surface of the second protection ring 5 eventually flows into the first groove portion 50 and along the first groove The portion 50 flows downward, greatly reducing the possibility of water breaking through the second guard ring and entering the inside of the outer rotor motor from the gap between the outer rotor and the plastic end plate.
从第二防护圈5的端部上往挡水部43的一侧伸出有第一挡钩51,第一挡钩51可以有效的把水档在第一槽部50里面,从而减少水突破第二防护圈并且从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性。A first stop hook 51 protrudes from an end of the second protection ring 5 toward a side of the water retaining portion 43. The first stop hook 51 can effectively block the water in the first groove portion 50, thereby reducing water breakthrough. The second guard ring and the possibility of entering the inside of the outer rotor motor from the gap between the outer rotor and the plastic end plate.
在第二环形凹槽20内侧壁、外转子2端部的外缘上设置有环形的第二槽部21,以此形成第三层防护,即使水突破第二防护圈5进入到外转子2与塑封端板35之间的间隙,水也会流到第二槽部21里面沿着第二槽部21往下流走,大大减少水突破第三层防护并且从外转子与塑封端板之间的间隙进入到外转子电机内部的可能性。An annular second groove portion 21 is disposed on the inner side wall of the second annular groove 20 and the outer edge of the outer rotor 2 to form a third layer of protection, even if the water breaks through the second protection ring 5 and enters the outer rotor 2 With the gap between the plastic end plates 35, water also flows into the second groove portion 21 and flows down along the second groove portion 21, greatly reducing water breakthrough through the third layer of protection and from between the outer rotor and the plastic end plate. The possibility of the gap entering the inside of the outer rotor motor.
从外转子2的端部上往第二防护圈5的一侧伸出有第二挡钩22,第二挡钩22可以有效的把水档在第二槽部21里面,从而减少水突破第三层防护并且从外
转子与塑封端板之间的间隙进入到外转子电机内部的可能性。A second stop hook 22 is protruded from an end of the outer rotor 2 toward a side of the second guard ring 5, and the second stop hook 22 can effectively block the water in the second groove portion 21, thereby reducing water breakthrough. Three layers of protection and from the outside
The gap between the rotor and the plastic end plate enters the inside of the outer rotor motor.
所述第二防护圈5与塑封端板35通过注塑安装在一起,生产工艺简单、结构强度大。The second protection ring 5 and the plastic sealing end plate 35 are assembled by injection molding, and the production process is simple and the structural strength is large.
以上实施例为本发明的较佳实施方式,但本发明的实施方式不限于此,其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均为等效的置换方式,都包含在本发明的保护范围之内。
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.
Claims (7)
- 一种外转子电机的防水结构,包括转轴(1)、外转子(2)和塑封定子(3),外转子(2)套设于塑封定子(3)外面,转轴(1)安装在塑封定子(3)中间并且与外转子(2)连接在一起,所述塑封定子(3)包括定子铁芯(31)、端部绝缘(32)、线圈绕组(33)和塑封体(34),端部绝缘(32)安装在定子铁芯(31)的端面上,线圈绕组(33)绕设于端部绝缘(32)上,塑封体(34)把所述定子铁芯(31)、端部绝缘(32)和线圈绕组(33)连结成一体,于定子铁芯(31)一端、塑封体(34)上设置有塑封端板(35),于定子铁芯(31)***、塑封端板(35)的底面上设置有第一环形凹槽(351),在外转子(2)靠近塑封端板(35)一端的外缘上设置有环形的第一防护圈(4),第一防护圈(4)伸入到第一环形凹槽(351)里面,其特征在于:所述的第一防护圈(4)包括根部(41)、挡水部(43)以及连接在根部(41)与挡水部(43)之间的倾斜部(42),根部(41)安装在外转子(2)端部的外缘上,倾斜部(42)倾斜地向外侧延伸,并且至少部分的倾斜部(42)伸入到第一环形凹槽(351)里面,挡水部(43)从倾斜部(42)的端部开始沿轴向延伸伸入到第一环形凹槽(351)里面。The waterproof structure of the outer rotor motor comprises a rotating shaft (1), an outer rotor (2) and a plastic-sealed stator (3), the outer rotor (2) is sleeved outside the plastic-sealed stator (3), and the rotating shaft (1) is mounted on the plastic-sealed stator (3) intermediate and connected to the outer rotor (2), the molded stator (3) comprising a stator core (31), an end insulation (32), a coil winding (33) and a molding body (34), the end The partial insulation (32) is mounted on the end surface of the stator core (31), the coil winding (33) is wound around the end insulation (32), and the plastic sealing body (34) places the stator core (31) and the end portion The insulating (32) and the coil winding (33) are integrally connected, and a plastic sealing end plate (35) is disposed on one end of the stator core (31) and the molding body (34), and is external to the stator core (31) and plastically sealed end plate. a first annular groove (351) is disposed on a bottom surface of the (35), and an annular first protection ring (4) is disposed on an outer edge of the outer rotor (2) near one end of the plastic sealing end plate (35), the first protection ring (4) extending into the first annular groove (351), characterized in that: the first protection ring (4) comprises a root portion (41), a water blocking portion (43) and a connection to the root portion (41) An inclined portion (42) between the water retaining portions (43), and the root portion (41) is mounted on the outer rotor (2) On the outer edge of the end, the inclined portion (42) extends obliquely outward, and at least a portion of the inclined portion (42) projects into the first annular groove (351), and the water retaining portion (43) is inclined from the inclined portion (43) The end of 42) begins to extend axially into the first annular groove (351).
- 根据权利要求1所述的一种外转子电机的防水结构,其特征在于:在第一防护圈(4)与外转子(2)端部的外缘之间形成第二环形凹槽(20),在第一环形凹槽(351)的底壁上设置有环形的第二防护圈(5),第二防护圈(5)伸入到第二环形凹槽(20)里面。A waterproof structure for an outer rotor motor according to claim 1, wherein a second annular groove (20) is formed between the first guard ring (4) and the outer edge of the end portion of the outer rotor (2) An annular second protection ring (5) is disposed on the bottom wall of the first annular groove (351), and the second protection ring (5) projects into the second annular groove (20).
- 根据权利要求2所述的一种外转子电机的防水结构,其特征在于:在第二防护圈(5)的外侧面上设置有环形的第一槽部(50)。A waterproof structure for an outer rotor motor according to claim 2, characterized in that an annular first groove portion (50) is provided on the outer side surface of the second guard ring (5).
- 根据权利要求3所述的一种外转子电机的防水结构,其特征在于:从第二防护圈(5)的端部上往挡水部(43)的一侧伸出有第一挡钩(51)。A waterproof structure for an outer rotor motor according to claim 3, characterized in that a first stop hook protrudes from an end of the second guard ring (5) toward one side of the water retaining portion (43) 51).
- 根据权利要求2或3或4所述的一种外转子电机的防水结构,其特征在于:在第二环形凹槽(20)内侧壁、外转子(2)端部的外缘上设置有环形的第 二槽部(21)。A waterproof structure for an outer rotor motor according to claim 2 or 3 or 4, characterized in that a ring is provided on the inner side wall of the second annular groove (20) and the outer edge of the end portion of the outer rotor (2). First Two groove parts (21).
- 根据权利要求5所述的一种外转子电机的防水结构,其特征在于:从外转子(2)的端部上往第二防护圈(5)的一侧伸出有第二挡钩(22)。A waterproof structure for an outer rotor motor according to claim 5, characterized in that a second stop hook (22) protrudes from an end of the outer rotor (2) toward one side of the second guard ring (5). ).
- 根据权利要求2或3或4所述的一种外转子电机的防水结构,其特征在于:所述第二防护圈(5)与塑封端板(35)通过注塑安装在一起。 A waterproof structure for an outer rotor motor according to claim 2 or 3 or 4, characterized in that the second protection ring (5) and the plastic end plate (35) are mounted together by injection molding.
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CN108433526A (en) * | 2018-04-23 | 2018-08-24 | 广东格兰仕集团有限公司 | A kind of hot wind component of steaming oven |
CN109185198A (en) * | 2018-11-06 | 2019-01-11 | 杭州雪尔电器有限公司 | A kind of protection type external rotor axial-flow fan |
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CN105720725B (en) * | 2016-04-20 | 2018-08-07 | 苏州朗高电机有限公司 | A kind of car main drive motor splash proof device |
CN106787370B (en) * | 2017-03-29 | 2023-12-08 | 常州朗奇威电器有限公司 | Improved outer rotor motor and production method thereof |
CN107834743A (en) * | 2017-11-09 | 2018-03-23 | 合肥市通得力电气制造有限公司 | A kind of external rotor electric machine with waterproof construction |
CN113937925A (en) * | 2021-10-18 | 2022-01-14 | 珠海格力电器股份有限公司 | Waterproof structure of external rotor motor and motor |
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CN201789359U (en) * | 2010-09-14 | 2011-04-06 | 中山大洋电机制造有限公司 | External rotor electric machine with waterproof structure |
US20120134792A1 (en) * | 2010-11-25 | 2012-05-31 | Asia Vital Components Co., Ltd. | Waterproof and dustproof fan motor structure and fan using the same |
CN203942373U (en) * | 2014-06-26 | 2014-11-12 | 付家骐 | A kind of waterproof construction of motor |
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CN101075756A (en) * | 2006-05-19 | 2007-11-21 | 南京乐金熊猫电器有限公司 | Electric motor |
CN201789359U (en) * | 2010-09-14 | 2011-04-06 | 中山大洋电机制造有限公司 | External rotor electric machine with waterproof structure |
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