WO2023082311A1 - 防水环组件、防水密封装置和外转子式设备 - Google Patents

防水环组件、防水密封装置和外转子式设备 Download PDF

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Publication number
WO2023082311A1
WO2023082311A1 PCT/CN2021/131932 CN2021131932W WO2023082311A1 WO 2023082311 A1 WO2023082311 A1 WO 2023082311A1 CN 2021131932 W CN2021131932 W CN 2021131932W WO 2023082311 A1 WO2023082311 A1 WO 2023082311A1
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WO
WIPO (PCT)
Prior art keywords
waterproof ring
waterproof
limiting
fuselage
ring assembly
Prior art date
Application number
PCT/CN2021/131932
Other languages
English (en)
French (fr)
Inventor
黄惠臣
Original Assignee
深圳市嘉禾云帆科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市嘉禾云帆科技有限公司 filed Critical 深圳市嘉禾云帆科技有限公司
Priority to DE212021000583.7U priority Critical patent/DE212021000583U1/de
Publication of WO2023082311A1 publication Critical patent/WO2023082311A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3268—Mounting of sealing rings

Definitions

  • the invention relates to the technical field of outer rotor equipment, in particular to a waterproof ring assembly, a waterproof sealing device and the outer rotor equipment.
  • the external rotor can be connected to the drive shaft of the motor, and there is a gap between the drive shaft and the fuselage, so waterproofing between the two is required.
  • the existing waterproof structure usually uses a rubber sealing ring for waterproofing.
  • the rubber sealing ring is usually arranged in a through hole of the fuselage, and the transmission shaft passes through the rubber sealing ring.
  • the rubber sealing ring will rotate together with the transmission shaft, which makes if the frictional contact surface between the rubber sealing ring and the fuselage is too large, it will cause the rubber sealing ring to wear faster, and the rubber sealing ring is easy to be cut in for example During the operation of the machine, it slides out of the original position, affecting the waterproof function.
  • the present invention provides a waterproof ring assembly for fixing a waterproof ring for an outer rotor type device including a body and a motor with a drive shaft , the motor is arranged inside the fuselage, the transmission shaft passes through the fuselage and is rotatable, the waterproof ring assembly is sleeved on the transmission shaft and connected to the fuselage, the waterproof Ring components include:
  • a second waterproof ring is located on one side of the first waterproof ring along the axial direction of the waterproof ring assembly, and the first waterproof ring and the second waterproof ring form a structure for fixing the
  • the accommodating part of the waterproof ring the accommodating part has an inner opening for the radially inner end of the waterproof ring to protrude, and the inner opening faces the center of the waterproof ring assembly.
  • the accommodating portion includes a limiting wall surface, a first limiting edge and a second limiting edge, the limiting wall surface is used to abut against the radially outermost peripheral surface of the waterproof ring, the The first limit edge is spaced apart from the second limit edge in the axial direction of the waterproof ring assembly, so as to sandwich the waterproof ring between the first limit edge and the second limit edge between.
  • At least one of the first waterproof ring and the second waterproof ring is provided with the limiting wall, the limiting wall extends along the axial direction and faces the center of the waterproof ring assembly,
  • the first waterproof ring is provided with the first limiting edge
  • the second waterproof ring is provided with the second limiting edge.
  • At least one of the first waterproof ring and the second waterproof ring is provided with screw holes for connecting with the fuselage at intervals.
  • the first waterproof ring is located on a side of the second waterproof ring away from the fuselage, the first waterproof ring is provided with at least two studs with screw holes at intervals, the first waterproof ring The two waterproof rings are provided with at least two limiting openings at intervals, the studs are located in the limiting openings, and the circumferential surfaces of the studs are in contact with the wall surfaces of the limiting openings.
  • the position-limiting opening is a notch or a circumferentially closed opening.
  • the first waterproof ring is provided with limiting walls at intervals, and the limiting walls extend toward the side where the second waterproof ring is located, and the limiting walls are located between adjacent studs, so that The second waterproof ring is located on the inner side of the limiting wall close to the center of the waterproof ring assembly and abuts against the limiting wall.
  • one of the first waterproof ring and the second waterproof ring is provided with a positioning portion
  • the other of the first waterproof ring and the second waterproof ring is provided with a positioning opening
  • the positioning The part is located in the positioning opening.
  • the outer peripheral shape of the first waterproof ring is circular or oval;
  • the outer peripheral surface of the first waterproof ring includes at least one arc-shaped surface and at least one straight surface, and the arc-shaped surface is connected to the straight surface or connected to another arc-shaped surface;
  • the outer peripheral shape of the first waterproof ring is polygonal.
  • a waterproof sealing device for outer rotor equipment, the waterproof sealing device includes a waterproof ring and the waterproof ring assembly according to any one of the above aspects, the waterproof ring is arranged on the The first waterproof ring and the second waterproof ring are located in the accommodation portion, and the radially inner end of the waterproof ring protrudes from the inner opening of the accommodation portion.
  • the waterproof ring is an elastic deformation member.
  • an external rotor device which includes a fuselage, a motor with a drive shaft, and the waterproof sealing device according to any one of the above aspects, the motor is arranged inside the fuselage , the transmission shaft passes through the fuselage and is rotatable, the waterproof sealing device is sleeved on the transmission shaft and connected to the fuselage, and the waterproof ring is in contact with the circumferential surface of the transmission shaft catch.
  • the waterproof ring by disposing the waterproof ring between the first waterproof ring and the second waterproof ring, the waterproof ring can be firmly and reliably installed on the fuselage without rotating with the rotation of the transmission shaft.
  • the waterproof ring can be prevented from moving, tilting, shaking, etc. at least in the axial direction, and the waterproof ring can be prevented from being detached from the installation position during the rotation of the transmission shaft and losing its waterproof ability.
  • the waterproof structure provided by the present invention can effectively seal the gap between the transmission shaft and the fuselage, prevent fluid from entering the fuselage from the gap, and the waterproof ring can be reliably kept in the installation position, further improving the waterproof ability, and the overall wear resistance
  • the durability is good, and the service life of the waterproof ring is longer, thereby reducing the replacement frequency of the waterproof ring 20 and reducing the maintenance cost of the equipment.
  • Fig. 1 is a perspective view of a waterproof sealing device according to the present invention
  • Fig. 2 is another perspective view of the waterproof sealing device shown in Fig. 1;
  • Fig. 3 is a sectional view taken along the line A-A in Fig. 1;
  • Fig. 4 is a sectional view similar to Fig. 3, wherein the waterproof ring is removed;
  • Fig. 5 is a cross-sectional exploded view of the waterproof sealing device shown in Fig. 1;
  • Fig. 6 is a three-dimensional exploded view of the waterproof sealing device shown in Fig. 1;
  • FIG. 7 is another perspective exploded view of the waterproof sealing device shown in FIG. 1 .
  • first and second cited in the present invention are merely identifications and do not have any other meanings, such as a specific order and the like. Also, for example, the term “first element” itself does not imply the existence of a “second element”, and the term “second element” itself does not imply the existence of a "first element”.
  • an outer rotor device may include a fuselage, a motor with a drive shaft, and an outer rotor.
  • the motor is arranged inside the fuselage, and the drive shaft can pass through the fuselage and be rotatable, specifically, the drive shaft is rotatable around its central axis relative to the fuselage.
  • the outer rotor is connectable to the drive shaft for rotation therewith.
  • the waterproof sealing device can be sleeved on the transmission shaft and connected to the fuselage to seal the gap between the transmission shaft and the fuselage.
  • the external rotor type equipment can be any equipment such as a slicer, a mixer, a blower, and a fan, for example.
  • the waterproof sealing device 10 will be described in detail below with reference to FIGS. 1 to 7 .
  • the waterproof sealing device 10 includes a waterproof ring 20 and a waterproof ring assembly 100 for fixing the waterproof ring 20 .
  • the waterproof ring assembly 100 can be sleeved on the transmission shaft and connected to the fuselage.
  • the waterproof ring 20 is disposed in the waterproof ring assembly 100 .
  • the waterproof ring 20 is an elastic deformation member.
  • the waterproof ring 20 can be made of any elastically deformable material, such as rubber.
  • the waterproof ring 20 may be a rubber ring.
  • the waterproof ring assembly 100 may include a first waterproof ring 110 and a second waterproof ring 120 .
  • the second waterproof ring 120 is located on one side of the first waterproof ring 110 along the axial direction D1 of the waterproof ring assembly 100 . Further, the first waterproof ring 110 may be located on a side of the second waterproof ring 120 away from the fuselage. In the illustrated embodiment, the installation surface of the waterproof sealing device 10 facing the fuselage faces downward, and the first waterproof ring 110 is located above the second waterproof ring 120 .
  • Both the first waterproof ring 110 and the second waterproof ring 120 are rigid members with suitable rigidity, and the first waterproof ring 110 and the second waterproof ring 120 can be made of any rigid material with suitable rigidity, such as metal, plastic, plastic wait.
  • the directional terms used herein in describing the various components and parts of the waterproof sealing device 10, such as “upper”, “lower”, “above”, “below”, “upward”, “downward”, “Upward”, “downward” and the like are relative to the waterproof sealing device 10 placed horizontally with the installation surface facing down (that is, the placed state shown in FIG. 1 ).
  • the axial direction of the waterproof ring assembly 100 is parallel to the axial direction of both the transmission shaft and the waterproof ring 20, and the radial direction of the waterproof ring assembly 100 is parallel to the radial direction of both the transmission shaft and the waterproof ring 20.
  • the circumferential direction of 100 is parallel to the circumferential directions of both the transmission shaft and the waterproof ring 20 .
  • the axial centerline of the waterproof ring assembly 100 is collinear with the central axis of the transmission shaft and the axial centerline of the waterproof ring 20 .
  • the axial direction of the waterproof ring assembly 100 and the axial direction of the waterproof ring 20 are both marked with D1
  • the radial direction of the waterproof ring assembly 100 and the radial direction of the waterproof ring 20 are both marked with D2
  • the circumferential direction of the waterproof ring assembly 100 and the circumferential direction of the waterproof ring 20 are both marked with D3.
  • the first waterproof ring 110 and the second waterproof ring 120 constitute a receiving portion 130 for fixing the waterproof ring 20 .
  • the waterproof ring 20 is disposed between the first waterproof ring 110 and the second waterproof ring 120 and located in the receiving portion 130 .
  • the receiving portion 130 has an inner opening 131 for the waterproof ring 20 to protrude, and the inner opening 131 faces the center of the waterproof ring assembly 100 .
  • the waterproof ring 20 can protrude from the inner opening 131 of the receiving portion 130 (see FIG. 3 ), so that the waterproof ring 20 can abut against the peripheral surface of the transmission shaft.
  • the radially D2 outer end of the waterproof ring 20 is located in the receiving portion 130 , and the radially D2 inner end of the waterproof ring 20 protrudes from the inner opening 131 of the receiving portion 130 .
  • the waterproof ring 20 can be firmly and reliably installed on the fuselage without rotating with the rotation of the transmission shaft.
  • the waterproof ring 20 can be prevented from moving, tilting, shaking, etc. in at least the axial direction D1, and the waterproof ring 20 can be prevented from detaching from the installation position during the rotation of the transmission shaft and losing the waterproof ability.
  • the waterproof ring 20 and the rotating shaft it can be set to have as little friction as possible, so as to avoid the waterproof ring 20 from wearing and tearing faster due to excessive friction with the transmission shaft, thereby prolonging the service life of the waterproof ring;
  • the heat is low, which is beneficial to prolong the service life of the waterproof ring 20.
  • the waterproof structure provided by this embodiment can effectively seal the gap between the transmission shaft and the fuselage, preventing fluid from entering the inside of the fuselage from the gap, and the waterproof ring 20 can be kept at the installation position reliably, further improving the waterproof ability, and the overall The wear resistance is good, and the service life of the waterproof ring 20 is longer, thereby reducing the replacement frequency of the waterproof ring 20 and reducing the maintenance cost of the equipment.
  • the receiving portion 130 may include a limiting wall, a first limiting edge 112 and a second limiting edge 122 .
  • the limiting wall surface can be in contact with the outermost peripheral surface of the waterproof ring 20 in the radial direction D2 to limit the position of the waterproof ring 20 in the direction perpendicular to the axial direction D1 and prevent it from moving in the direction perpendicular to the axial direction D1 and shaking etc.
  • the first limit edge 112 can be spaced apart from the second limit edge 122 in the axial direction D1 of the waterproof ring assembly 100, so as to clamp the waterproof ring 20 between the first limit edge 112 and the second limit edge 122, Thereby, the position of the waterproof ring 20 in the axial direction D1 is limited, and its movement, inclination, shaking, etc. in the axial direction D1 are prevented.
  • At least one of the first waterproof ring 110 and the second waterproof ring 120 may be provided with a limiting wall.
  • the limiting wall extends along the axial direction D1 and faces the center of the waterproof ring assembly 100 .
  • the limiting wall may be an annular wall extending in the circumferential direction D3, more specifically, for example, may be an annular wall extending in the circumferential direction D3.
  • the first waterproof ring 110 is provided with a first limiting wall 111 and a first limiting edge 112 , and the first limiting edge 112 is located inside the first limiting wall 111 and is connected to the first limiting wall 111
  • the first limiting walls 111 are connected to each other.
  • the second waterproof ring 120 is provided with a second limiting wall 121 and a second limiting edge 122 , the second limiting edge 122 is located inside the second limiting wall 121 and connected to the second limiting wall 121 .
  • the first waterproof ring 110 may be provided with a limiting wall and a first limiting edge 112
  • the second waterproof ring 120 may be provided with a second limiting edge 122
  • the first limiting wall 111 may extend to or approach the second limiting edge 122
  • the first waterproof ring 110 may be provided with a first limiting edge 112
  • the second waterproof ring 120 may be provided with a limiting wall surface and a second limiting edge 122 .
  • the limiting wall can extend to the first limiting edge 112 or approach the second limiting edge 122 .
  • the first waterproof ring 110 and the second waterproof ring 120 may both be annular members closed in the circumferential direction D3.
  • the central hole of the first waterproof ring 110 is circular with an inner diameter d1.
  • the central hole of the second waterproof ring 120 is circular with an inner diameter d2.
  • the waterproof ring 20 is circular and has an outer diameter d31 and an inner diameter d32.
  • the approximate positions of d1, d2, d31 and d32 are schematically marked in the figure.
  • the inner diameter d1 of the first waterproof ring 110 can be smaller than the outer diameter d31 of the waterproof ring 20 and larger than the inner diameter d32 of the waterproof ring 20 .
  • the inner diameter d2 of the second waterproof ring 120 can be smaller than the outer diameter d31 of the waterproof ring 20 and larger than the inner diameter d32 of the waterproof ring 20 .
  • the outer peripheral shape of the first waterproof ring 110 is not limited. More specifically, referring to FIG. 7, the first waterproof ring 110 has an outer peripheral surface F1, and the projected shape of the outer peripheral surface F1 on a plane perpendicular to the axial direction D1 is not limited. It can be set according to the actual installation environment, for example, it can be set according to the shape of the fuselage. As shown schematically in the figure, the outer peripheral surface F1 of the first waterproof ring 110 extends along the axial direction D1.
  • the outer peripheral shape of the first waterproof ring 110 is circular or oval.
  • the first waterproof ring 110 has a circular or elliptical outer peripheral surface.
  • the outer peripheral shape of the first waterproof ring 110 is irregular.
  • the outer peripheral surface F1 of the first waterproof ring 110 may include at least one arcuate surface F11 and at least one straight surface F12.
  • the arcuate surface F11 may be connected to the flat surface F12 or to another arcuate surface F11.
  • the outer peripheral surface F1 may include an arcuate surface F11 and a flat surface F12. Both ends of the curved surface F11 are connected to the straight surface F12.
  • the central angle of the arc surface F11 is preferably greater than or equal to 180°.
  • the outer peripheral surface F1 may include one arc-shaped surface F11 and at least two flat surfaces F12.
  • the outer peripheral surface F1 may include at least two arcuate surfaces F11 and at least two flat surfaces F12. Two ends of the arc-shaped surface F11 may be respectively connected with different straight surfaces F12. For the illustrated embodiment, two flat surfaces are shown, which are spaced apart by an arcuate surface F11 and which may be oppositely oriented and symmetrical to each other.
  • the outer peripheral shape of the first waterproof ring 110 is a polygon.
  • the outer peripheral surface F1 of the first waterproof ring 110 may include at least three straight surfaces F12. At least three flat surfaces F12 are sequentially connected. Therefore, the outer peripheral shape of the first waterproof ring 110 can be formed into any polygonal shape such as triangle, square, trapezoid, or the like.
  • the waterproof ring assembly 100 may be connected to the fuselage in any suitable manner such as fastening with fasteners, clamping, welding and the like.
  • the waterproof ring assembly 100 may be detachably connected to the fuselage, for example, by fastening with fasteners.
  • at least one of the first waterproof ring 110 and the second waterproof ring 120 can be provided with screw holes 113 for connecting with the fuselage at intervals.
  • the screw holes 113 are arranged at intervals in the circumferential direction D3.
  • Fasteners are fixed to the fuselage through screw holes 113 .
  • Fasteners can be screws.
  • the first waterproof ring 110 may be provided with studs 114 with screw holes 113 at intervals.
  • the second waterproof ring 120 can be provided with limiting openings 123 at intervals.
  • the limit opening 123 corresponds to the position of the stud 114 .
  • the number of studs 114 is at least two, and correspondingly, the number of limiting openings 123 is also at least two.
  • the fastener passes through the screw hole 113 of the stud 114 to connect the first waterproof ring 110 to the fuselage, and the second waterproof ring 120 is sandwiched between the first waterproof ring 110 and the fuselage.
  • the limiting opening 123 it is possible to prevent the second waterproof ring 120 from moving relative to the first waterproof ring 110, specifically relative to the first waterproof ring 110 in a direction at least perpendicular to the axial direction D1, and relative to the first waterproof ring 110.
  • a waterproof ring 110 rotates.
  • the limit opening 123 is a gap. That is, the limiting opening 123 is not closed along its circumferential direction D3 and has an opening. More specifically, the limiting opening 123 is, for example, a semicircular notch. By providing the notch, the radial dimension D2 of the second waterproof ring 120 can be reduced, which is beneficial to reduce material costs. If needed and/or desired, the limiting opening 123 may be a circumferentially closed opening, such as a circular opening.
  • the first waterproof ring 110 can be provided with limiting walls 115 at intervals.
  • the limiting wall 115 can extend toward the side where the second waterproof ring 120 is located, so that the limiting wall 115 protrudes from the lower surface of the first waterproof ring 110 .
  • the limiting wall 115 is located between adjacent studs 114 .
  • the second waterproof ring 120 is located on the inner side of the limiting wall 115 near the center of the waterproof ring assembly 100 , and the second waterproof ring 120 abuts against the limiting wall 115 .
  • the second waterproof ring 120 can be further prevented from moving relative to the first waterproof ring 110 , specifically, moving relative to the first waterproof ring 110 in a direction perpendicular to the axial direction D1 .
  • the limiting wall 115 is arc-shaped extending along the circumferential direction D3 and can be connected with the stud 114 .
  • first waterproof ring 110 and the second waterproof ring 120 may be provided with a positioning portion 141 ( FIG. 7 ), and the other of the first waterproof ring 110 and the second waterproof ring 120 may be provided with a positioning port 142 ( FIG. 6 ). .
  • the positioning part 141 can be located in the positioning opening 142 .
  • the first waterproof ring 110 is provided with a positioning portion 141
  • the second waterproof ring 120 is provided with a positioning opening 142 .
  • the size of the positioning opening 142 is generally smaller than that of the limiting opening 123 .
  • the first waterproof ring 110 may also be provided with a supporting wall and a peripheral wall 118 .
  • the supporting wall and the peripheral wall 118 can extend toward the side where the second waterproof ring 120 is located, so that the supporting wall and the peripheral wall 118 protrude from the lower surface of the first waterproof ring 110 .
  • the supporting wall is located on the inner side of the limiting wall 115 close to the center of the waterproof ring assembly 100 , and the limiting wall 115 protrudes from the supporting wall.
  • the supporting wall can abut against the second waterproof ring 120 .
  • the support wall may include an inner peripheral wall 116 and a connection wall 117 .
  • the inner peripheral wall 116 is circular and located outside the first limiting edge 112 .
  • the inner peripheral wall 116 can be in contact with the waterproof ring 20 .
  • the surface of the inner peripheral wall 116 facing the center of the first waterproof ring 110 is the first limiting wall surface 111 , which can abut against the waterproof ring 20 .
  • the inner peripheral wall 116 is connected to the limiting wall 115 through the connecting wall 117 .
  • the connecting walls 117 extend along the radial direction D2 and are arranged at intervals in the circumferential direction D3.
  • the peripheral wall 118 is located on the outer side of the stud 114 away from the center of the waterproof ring assembly 100 .
  • the peripheral wall 118 may be connected to the stud 114 .
  • the positioning portion 141 may be disposed on the connecting wall 117 , specifically, disposed on a surface of the connecting wall 117 facing the second waterproof ring 120 .
  • the structural strength of the first waterproof ring 110 can be enhanced.
  • the peripheral wall 118 By setting the peripheral wall 118, the internal structure of the waterproof sealing device 10 can be covered, preventing liquid from entering the interior of the waterproof sealing device 10, and then entering the interior of the fuselage, and making the external structure of the waterproof sealing device 10 simple and beautiful.
  • the second waterproof ring 120 may be provided with a step 124 around its central hole.
  • the side of the step 124 away from the first waterproof ring 110 is recessed.
  • the surface of the step 124 extending along the axial direction D1 is the second limiting wall 121 , and the bottom of the step 124 is formed as the second limiting edge 122 .

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Abstract

本发明公开了一种防水环组件、防水密封装置和外转子式设备，外转子式设备包括机身和带传动轴的电机，防水环组件套设于传动轴并连接至机身，防水环组件包括第一防水环和第二防水环，第二防水环位于第一防水环的沿防水环组件的轴向的一侧，第一防水环与第二防水环构成用于固定防水圈的容纳部，容纳部具有用于防水圈的径向内端伸出的内侧开口，内侧开口面向防水环组件的中心。根据本发明，通过将防水圈设于第一防水环与第二防水环之间，能够将防水圈牢固且可靠地安装至机身，不会随传动轴的转动而转动。由此，能够防止防水圈在至少轴向上的移动、倾斜和晃动等，避免防水圈在传动轴转动的过程中脱离安装位置而失去防水能力。

Description

防水环组件、防水密封装置和外转子式设备 技术领域
本发明涉及外转子式设备的技术领域，具体而言涉及一种防水环组件、防水密封装置和外转子式设备。
背景技术
诸如切片机等外转子式设备，外转子能够与电机的传动轴相连，传动轴与机身之间存在间隙，因此需要在两者之间进行防水。现有的防水结构通常采用橡胶密封圈进行防水，橡胶密封圈的设置方式通常是将橡胶密封圈设置于机身的通孔处，传动轴穿过该橡胶密封圈。
对于上述橡胶密封圈的设置方式，橡胶密封圈会随传动轴一起旋转，这使得如果橡胶密封圈与机身摩擦接触面过大，会导致橡胶密封圈磨损加快，并且橡胶密封圈容易在例如切片机的运转过程中滑出原始的位置，影响防水功能。
因此，需要一种防水环组件、防水密封装置和外转子式设备，以至少部分地解决以上问题。
发明内容
在发明内容部分中引入了一系列简化形式的概念，这将在具体实施方式部分中进一步详细说明。本发明的发明内容部分并不意味着要试图限定出所要求保护的技术方案的关键特征和必要技术特征，更不意味着试图确定所要求保护的技术方案的保护范围。
为至少部分地解决上述问题，本发明提供了一种防水环组件，用于固定防水圈，所述防水圈用于外转子式设备，所述外转子式设备包括机身和带传动轴的电机，所述电机设置于所述机身内部，所述传动轴从所述机身穿出并可旋转，所述防水环组件套设于所述传动轴并连接至所述机身，所述防水环组件包括：
第一防水环；以及
第二防水环，所述第二防水环位于所述第一防水环的沿所述防水环组 件的轴向的一侧，所述第一防水环与所述第二防水环构成用于固定所述防水圈的容纳部，所述容纳部具有用于所述防水圈的径向内端伸出的内侧开口，所述内侧开口面向所述防水环组件的中心。
可选地，所述容纳部包括限位壁面、第一限位沿和第二限位沿，所述限位壁面用于与所述防水圈的在径向上的最外周表面抵接，所述第一限位沿在所述防水环组件的轴向上与所述第二限位沿间隔设置，以便将所述防水圈夹于所述第一限位沿和所述第二限位沿之间。
可选地，所述第一防水环和所述第二防水环中的至少一个设置有所述限位壁面，所述限位壁面沿所述轴向延伸并面向所述防水环组件的中心，所述第一防水环设置有所述第一限位沿，所述第二防水环设置有所述第二限位沿。
可选地，所述第一防水环和所述第二防水环中的至少一个间隔地设置有用于与所述机身连接的螺孔。
可选地，所述第一防水环位于所述第二防水环的远离所述机身的一侧，所述第一防水环间隔地设置有至少两个带螺孔的螺柱，所述第二防水环间隔地设置有至少两个限位口，所述螺柱位于所述限位口内，并且所述螺柱的周向表面与所述限位口的壁面抵接。
可选地，所述限位口为缺口或周圈闭合的口。
可选地，所述第一防水环间隔地设置有限位壁，所述限位壁朝向所述第二防水环所在侧延伸，所述限位壁位于相邻的所述螺柱之间，所述第二防水环位于所述限位壁的靠近所述防水环组件中心的内侧并且与所述限位壁抵接。
可选地，所述第一防水环和所述第二防水环中的一个设置有定位部，所述第一防水环和所述第二防水环中的另一个设置有定位口，所述定位部位于所述定位口内。
可选地，所述第一防水环的外周形状为圆形或椭圆形；
或者所述第一防水环的外周表面包括至少一个弧形表面和至少一个平直表面，所述弧形表面与所述平直表面相连或与另一个所述弧形表面相连；
或者所述第一防水环的外周形状为多边形。
根据本发明的另一方面，提供了一种防水密封装置，用于外转子式设备，防水密封装置包括防水圈和根据上述任一方面所述的防水环组件，所述防水圈设置于所述第一防水环与所述第二防水环之间并位于所述容纳部 内，并且所述防水圈的径向内端从所述容纳部的内侧开口伸出。
可选地，所述防水圈为弹性形变构件。
根据本发明的另一方面，提供了一种外转子式设备，其包括机身、带传动轴的电机和根据上述任一方面所述的防水密封装置，所述电机设置于所述机身内部，所述传动轴从所述机身穿出并可旋转，所述防水密封装置套设于所述传动轴并连接至所述机身，所述防水圈与所述传动轴的周向表面抵接。
根据本发明，通过将防水圈设于第一防水环与第二防水环之间，能够将防水圈牢固且可靠地安装至机身，不会随传动轴的转动而转动。由此，能够防止防水圈在至少轴向上的移动、倾斜和晃动等，避免防水圈在传动轴转动的过程中脱离安装位置而失去防水能力。防水圈与转动轴之间可以设置成存在尽可能小的摩擦力，避免防水圈因与传动轴摩擦力过大而加快磨损，由此能够延长防水圈的使用寿命；并且因摩擦产生的热量较低，有利于延长防水圈的使用寿命。
本发明提供的防水结构，能够有效密封传动轴与机身之间的间隙，阻止流体从该间隙进入机身内部，防水圈能够可靠地保持在安装位置，进一步提升了防水能力，并且整体耐磨性好，防水圈使用寿命更长，从而可以降低防水圈20的更换频率，降低设备的维护成本。
附图说明
本发明的下列附图在此作为本发明的一部分用于理解本发明。附图中示出了本发明的实施例及其描述，用来解释本发明的原理。
附图中：
图1为根据本发明的防水密封装置的立体图；
图2为图1中所示的防水密封装置的另一立体图；
图3为沿图1中的线A-A所截的截面图；
图4为类似于图3的截面图，其中移除了防水圈；
图5为图1中所示的防水密封装置的截面分解图；
图6为图1中所示的防水密封装置的立体分解图；
图7为图1中所示的防水密封装置的另一立体分解图。
附图标记说明：
10防水密封装置                100防水环组件
110第一防水环                 111第一限位壁面
112第一限位沿                 113螺孔
114螺柱                       115限位壁
116内周壁                     117连接壁
118外周壁                     120第二防水环
121第二限位壁面               122第二限位沿
123限位口                     124台阶
130容纳部                     131内侧开口
141定位部                     142定位口
20防水圈
具体实施方式
在下文的描述中，给出了大量具体的细节以便提供对本发明更为彻底的理解。然而，对于本领域技术人员而言显而易见的是，本发明可以无需一个或多个这些细节而得以实施。在其他的例子中，为了避免与本发明发生混淆，对于本领域公知的一些技术特征未进行描述。
为了彻底理解本发明，将在下列的描述中提出详细的描述。显然，本发明实施方式的施行并不限定于本领域的技术人员所熟悉的特殊细节。本发明的较佳实施例详细描述如下，然而除了这些详细描述外，本发明还可以具有其他实施方式。
应予以注意的是，这里所使用的术语仅是为了描述具体实施例，而非意图限制根据本发明的示例性实施例。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式。此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在所述特征、整体、步骤、操作、元件和/或组件，但不排除存在或附加一个或多个其他特征、整体、步骤、操作、元件、组件和/或它们的组合。
本发明中所引用的诸如“第一”和“第二”的序数词仅仅是标识，而不具有任何其他含义，例如特定的顺序等。而且，例如，术语“第一部件”其本身不暗示“第二部件”的存在，术语“第二部件”本身不暗示“第一部件”的存在。
需要说明的是，本文中所使用的术语“上”、“下”、“前”、“后”、“左”、“右”、“内”、“外”以及类似的表述只是为了说明目的，并非限制。
现在，将参照附图更详细地描述根据本发明的示例性实施例。然而，这些示例性实施例可以多种不同的形式来实施，并且不应当被解释为只限于这里所阐述的实施例。应当理解的是，提供这些实施例是为了使得本发明的公开彻底且完整，并且将这些示例性实施例的构思充分传达给本领域普通技术人员。
本发明提供了一种防水密封装置，该防水密封装置能够用于外转子式设备。具体地，外转子式设备可以包括机身、带传动轴的电机和外转子。电机设置于机身内部，传动轴能够从机身穿出并可旋转，具体是传动轴围绕其中心轴线相对于机身可旋转。外转子能够与传动轴相连，以随传动轴一起旋转。防水密封装置能够套设于传动轴并连接至机身，以密封传动轴与机身之间存在的间隙。外转子式设备例如可以为切片机、搅拌机、风机、风扇等任何设备。
下面结合图1至图7具体描述防水密封装置10。
如图1至图3所示，防水密封装置10包括防水圈20和用于固定防水圈20的防水环组件100。防水环组件100能够套设于传动轴并连接至机身。防水圈20设置于防水环组件100内。防水圈20为弹性形变构件。防水圈20可以由任何弹性形变材料制成，例如橡胶等。可选地，防水圈20可以为橡胶圈。具体地，防水环组件100可以包括第一防水环110和第二防水环120。第二防水环120位于第一防水环110的沿防水环组件100的轴向D1的一侧。进一步地，第一防水环110可以位于第二防水环120的远离机身的一侧。在图示实施方式中，防水密封装置10的面向机身的安装面朝下，第一防水环110位于第二防水环120的上方。第一防水环110和第二防水环120均为具有合适刚度的刚性构件，第一防水环110和第二防水环120均可以由具有合适刚度的任何刚性材料制成，例如金属、塑料、塑胶等。
需要说明的是，本文在描述防水密封装置10的各个部件、部分等使用的方向性术语，诸如“上”、“下”、“上方”、“下方”、“向上”、“向下”、“朝上”、“朝下”等是相对于处于水平放置且安装面朝下(即图1所示的放置状态)的防水密封装置10而言的。
可以理解，防水环组件100的轴向与传动轴和防水圈20两者的轴向均 平行，防水环组件100的径向与传动轴和防水圈20两者的径向均平行，防水环组件100的周向与传动轴和防水圈20两者的周向均平行。并且，防水环组件100的轴向中心线与传动轴的中心轴线和防水圈20的轴向中心线三者共线。
在附图中，为简化，防水环组件100的轴向与防水圈20的轴向均用D1标示出，类似地，防水环组件100的径向与防水圈20的径向均用D2标示出，防水环组件100的周向与防水圈20的周向均用D3标示出。
如图4所示，第一防水环110与第二防水环120构成用于固定防水圈20的容纳部130。防水圈20设置于第一防水环110与第二防水环120之间并位于容纳部130内。容纳部130具有用于防水圈20伸出的内侧开口131，内侧开口131面向防水环组件100的中心。防水圈20可以从容纳部130的内侧开口131伸出(参见图3)，使得防水圈20能够与传动轴的周向表面抵接。换句话说，防水圈20的径向D2外端位于容纳部130内，其径向D2内端伸出容纳部130的内侧开口131。
以此实施方式，通过将防水圈20设于第一防水环110与第二防水环120之间，能够将防水圈20牢固且可靠地安装至机身，不会随传动轴的转动而转动。由此，能够防止防水圈20在至少轴向D1上的移动、倾斜和晃动等，避免防水圈20在传动轴转动的过程中脱离安装位置而失去防水能力。防水圈20与转动轴之间可以设置成存在尽可能小的摩擦力，避免防水圈20因与传动轴摩擦力过大而加快磨损，由此能够延长防水圈的使用寿命；并且因摩擦产生的热量较低，有利于延长防水圈20的使用寿命。
本实施方式提供的防水结构，能够有效密封传动轴与机身之间的间隙，阻止流体从该间隙进入机身内部，防水圈20能够可靠地保持在安装位置，进一步提升了防水能力，并且整体耐磨性好，防水圈20使用寿命更长，从而可以降低防水圈20的更换频率，降低设备的维护成本。
需要说明的是，如果没有其它的限定，本文使用的方向术语，诸如“朝内”、“朝外”、“向内”、“向外”、“内侧”、“外侧”等中的“内”是指靠近防水密封装置10的中心，“外”是指远离防水密封装置10的中心。
容纳部130可以包括限位壁面、第一限位沿112和第二限位沿122。限位壁面能够与防水圈20的在径向D2上的最外周表面抵接，以限制防水圈20在垂直于轴向D1的方向上的位置，防止其在垂直于轴向D1的方向 上移动和晃动等。第一限位沿112能够在防水环组件100的轴向D1上与第二限位沿122间隔设置，以便将防水圈20夹于第一限位沿112和第二限位沿122之间，从而限制防水圈20在轴向D1上的位置，防止其在轴向D1上的移动、倾斜和晃动等。
第一防水环110和第二防水环120中的至少一个可以设置有限位壁面。限位壁面沿轴向D1延伸并面向防水环组件100的中心。限位壁面可以是在周向D3上延伸的环形壁面，更具体地，例如可以是在周向D3上延伸的圆环形壁面。如图5所示，对于图示实施方式，第一防水环110设置有第一限位壁面111和第一限位沿112，第一限位沿112位于第一限位壁面111的内侧并且与第一限位壁面111相连。第二防水环120设置有第二限位壁面121和第二限位沿122，第二限位沿122位于第二限位壁面121的内侧并且与第二限位壁面121相连。
在其他未示出的实施方式中，第一防水环110可以设置有限位壁面和第一限位沿112，第二防水环120设置有第二限位沿122。第一限位壁面111可以延伸至第二限位沿122或接近第二限位沿122。可替代地，第一防水环110可以设置有第一限位沿112，第二防水环120设置有限位壁面和第二限位沿122。限位壁面可以延伸至第一限位沿112或接近第二限位沿122。
第一防水环110与第二防水环120可以均是周向D3闭合的环形构件。
如图6所示，第一防水环110的中心孔为圆形，其具有内径d1。第二防水环120的中心孔为圆形，其具有内径d2。防水圈20为圆形，其具有外径d31和内径d32。其中图中示意性地标示出d1、d2、d31和d32的大致位置。第一防水环110的内径d1能够小于防水圈20的外径d31，大于防水圈20的内径d32。第二防水环120的内径d2能够小于防水圈20的外径d31，大于防水圈20的内径d32。
第一防水环110的外周形状不受限制，更具体地说，参见图7，第一防水环110具有外周表面F1，外周表面F1在垂直于轴向D1的平面上的投影形状不受限制，可以根据实际安装环境设置，例如可以根据机身的形状设置。图中示意性地示出了，第一防水环110的外周表面F1沿轴向D1延伸。
一个示例是，第一防水环110的外周形状为圆形或椭圆形。具体地，第一防水环110具有圆形或椭圆形的外周表面。
另一个示例是，第一防水环110的外周形状为异形。具体地，第一防水环110的外周表面F1可以包括至少一个弧形表面F11和至少一个平直表面F12。弧形表面F11可以与平直表面F12相连或与另一个弧形表面F11相连。例如，一个实施方式是，外周表面F1可以包括一个弧形表面F11和一个平直表面F12。该弧形表面F11的两端均与该平直表面F12相连。在该实施方式中，可选地，弧形表面F11的圆心角优选大于或等于180°。另一个实施方式是，外周表面F1可以包括一个弧形表面F11和至少两个平直表面F12。该弧形表面F11的两端分别与不同的平直表面F12相连。再一个实施方式是，外周表面F1可以包括至少两个弧形表面F11和至少两个平直表面F12。弧形表面F11的两端可以分别与不同的平直表面F12相连。对于图示实施方式，示出了两个平直表面，这两个平直表面被弧形表面F11间隔开，并且可以朝向相反且彼此对称。
再一个示例是，第一防水环110的外周形状为多边形。具体地，第一防水环110的外周表面F1可以包括至少三个平直表面F12。至少三个平直表面F12依次相连。由此，第一防水环110的外周形状可以形成为三角形、方形、梯形等任何多边形状。
防水环组件100可以例如通过紧固件紧固、卡接、焊接等任何合适方式连接至机身。作为一个示例，防水环组件100可以例如通过紧固件紧固的方式可拆卸地连接至机身。具体地，第一防水环110和第二防水环120中的至少一个能够间隔地设置有用于与机身连接的螺孔113。螺孔113在周向D3上间隔设置。紧固件穿过螺孔113固定至机身。紧固件可以是螺丝。
如图6和图7所示，第一防水环110可以间隔地设置有带螺孔113的螺柱114。第二防水环120可以间隔地设置有限位口123。限位口123与螺柱114位置对应。螺柱114的数量为至少两个，相应地，限位口123的数量也为至少两个。图中示意性地示出了三个螺孔113和三个限位口123。参见图2，螺柱114能够位于限位口123内，并且螺柱114的周向表面与限位口123的壁面抵接。在该实施方式中，紧固件穿过螺柱114的螺孔113以将第一防水环110连接至机身，第二防水环120夹于第一防水环110和机身之间。通过设置限位口123，能够防止第二防水环120相对于第一防水环110的移动，具体是相对于第一防水环110在至少垂直于轴向D1的方向上的移动，以及相对于第一防水环110转动。
图中示出了限位口123为缺口。即限位口123沿其周向D3未封闭，具有开口。更具体地，限位口123例如为半圆形缺口。通过设置缺口，可以减小第二防水环120的径向D2尺寸，有利于降低材料成本。如果需要和/或期望，限位口123可以是周圈闭合的口，例如圆形口。
第一防水环110可以间隔地设置有限位壁115。限位壁115可以朝向第二防水环120所在侧延伸，以使限位壁115凸出于第一防水环110的下表面。限位壁115位于相邻的螺柱114之间。第二防水环120位于限位壁115的靠近防水环组件100中心的内侧，并且第二防水环120与限位壁115抵接。由此，可以进一步防止第二防水环120相对于第一防水环110的移动，具体是相对于第一防水环110在垂直于轴向D1的方向上的移动。限位壁115为沿周向D3延伸的弧形，并且可以与螺柱114相连。
第一防水环110和第二防水环120中的一个可以设置有定位部141(图7)，第一防水环110和第二防水环120中的另一个可以设置有定位口142(图6)。参见图2，定位部141能够位于定位口142内。在图示实施方式中，第一防水环110设置有定位部141，第二防水环120设置有定位口142。定位口142的尺寸一般小于限位口123的尺寸。通过设置定位部141和定位口142，可以实现快速装配，提高装配效率。在装配时，先将定位部141对准定位口142，而后将第一防水环110与第二防水环120紧贴放置，在放置的过程中，定位部141位于定位口142内，螺柱114位于限位口123内。这对于第一防水环110的外周形状是非圆形的实施方式，是更有利的。
第一防水环110还可以设置有支撑壁和外周壁118。支撑壁和外周壁118可以朝向第二防水环120所在侧延伸，以使支撑壁和外周壁118凸出于第一防水环110的下表面。支撑壁位于限位壁115的靠近防水环组件100中心的内侧，并且限位壁115凸出于支撑壁。支撑壁能够与第二防水环120抵接。作为一个示例，支撑壁可以包括内周壁116和连接壁117。内周壁116为圆环形并位于第一限位沿112的外侧。内周壁116能够与防水圈20抵接。具体地，内周壁116的朝向第一防水环110中心的表面为第一限位壁面111，其能够与防水圈20抵接。内周壁116通过连接壁117与限位壁115相连。连接壁117沿径向D2延伸，并在周向D3上间隔设置。外周壁118位于螺柱114的远离防水环组件100中心的外侧。外周壁118可以与螺柱114相连。定位部141可以设置于连接壁117，具体是，设置于连接壁117的面向第二防水环120的表面。
通过设置支撑壁，可以加强第一防水环110的结构强度。通过设置外周壁118，可以遮盖防水密封装置10的内部结构，避免液体进入防水密封装置10的内部，进而进入机身的内部，并且使防水密封装置10的外部结构简洁，美观。
第二防水环120可以设置有围绕其中心孔的台阶124。台阶124远离第一防水环110所在侧凹陷。台阶124的沿轴向D1延伸的表面为第二限位壁面121，台阶124的底部形成为第二限位沿122。
除非另有定义，本文中所使用的技术和科学术语与本发明的技术领域的技术人员通常理解的含义相同。本文中使用的术语只是为了描述具体的实施目的，不是旨在限制本发明。本文中在一个实施方式中描述的特征可以单独地或与其它特征结合地应用于另一个实施方式，除非该特征在该另一个实施方式中不适用或是另有说明。
本发明已经通过上述实施例进行了说明，但应当理解的是，上述实施例只是用于举例和说明的目的，而非意在将本发明限制于所描述的实施例范围内。此外本领域技术人员可以理解的是，本发明并不局限于上述实施例，根据本发明的教导还可以做出更多种的变型和修改，这些变型和修改均落在本发明所要求保护的范围以内。本发明的保护范围由附属的权利要求书及其等效范围所界定。

Claims (12)

  1. 一种防水环组件，用于固定防水圈，所述防水圈用于外转子式设备，所述外转子式设备包括机身和带传动轴的电机，所述电机设置于所述机身内部，所述传动轴从所述机身穿出并可旋转，其特征在于，所述防水环组件套设于所述传动轴并连接至所述机身，所述防水环组件包括：
    第一防水环；以及
    第二防水环，所述第二防水环位于所述第一防水环的沿所述防水环组件的轴向的一侧，所述第一防水环与所述第二防水环构成用于固定所述防水圈的容纳部，所述容纳部具有用于所述防水圈的径向内端伸出的内侧开口，所述内侧开口面向所述防水环组件的中心。
  2. 根据权利要求1所述的防水环组件，其特征在于，所述容纳部包括限位壁面、第一限位沿和第二限位沿，所述限位壁面用于与所述防水圈的在径向上的最外周表面抵接，所述第一限位沿在所述防水环组件的轴向上与所述第二限位沿间隔设置，以便将所述防水圈夹于所述第一限位沿和所述第二限位沿之间。
  3. 根据权利要求2所述的防水环组件，其特征在于，所述第一防水环和所述第二防水环中的至少一个设置有所述限位壁面，所述限位壁面沿所述轴向延伸并面向所述防水环组件的中心，所述第一防水环设置有所述第一限位沿，所述第二防水环设置有所述第二限位沿。
  4. 根据权利要求1至3中的任一项所述的防水环组件，其特征在于，所述第一防水环和所述第二防水环中的至少一个间隔地设置有用于与所述机身连接的螺孔。
  5. 根据权利要求4所述的防水环组件，其特征在于，所述第一防水环位于所述第二防水环的远离所述机身的一侧，所述第一防水环间隔地设置有至少两个带螺孔的螺柱，所述第二防水环间隔地设置有至少两个限位口，所述螺柱位于所述限位口内，并且所述螺柱的周向表面与所述限位口的壁面抵接。
  6. 根据权利要求5所述的防水环组件，其特征在于，所述限位口为缺口或周圈闭合的口。
  7. 根据权利要求6所述的防水环组件，其特征在于，所述第一防水环间隔地设置有限位壁，所述限位壁朝向所述第二防水环所在侧延伸，所述 限位壁位于相邻的所述螺柱之间，所述第二防水环位于所述限位壁的靠近所述防水环组件中心的内侧并且与所述限位壁抵接。
  8. 根据权利要求1至3中的任一项所述的防水环组件，其特征在于，所述第一防水环和所述第二防水环中的一个设置有定位部，所述第一防水环和所述第二防水环中的另一个设置有定位口，所述定位部位于所述定位口内。
  9. 根据权利要求1至3中的任一项所述的防水环组件，其特征在于，所述第一防水环的外周形状为圆形或椭圆形；
    或者所述第一防水环的外周表面包括至少一个弧形表面和至少一个平直表面，所述弧形表面与所述平直表面相连或与另一个所述弧形表面相连；
    或者所述第一防水环的外周形状为多边形。
  10. 一种防水密封装置，用于外转子式设备，其特征在于，包括防水圈和根据权利要求1至9中的任一项所述的防水环组件，所述防水圈设置于所述第一防水环与所述第二防水环之间并位于所述容纳部内，并且所述防水圈的径向内端从所述容纳部的内侧开口伸出。
  11. 根据权利要10所述的防水密封装置，其特征在于，所述防水圈为弹性形变构件。
  12. 一种外转子式设备，其特征在于，包括机身、带传动轴的电机和根据权利要求10或11所述的防水密封装置，所述电机设置于所述机身内部，所述传动轴从所述机身穿出并可旋转，所述防水密封装置套设于所述传动轴并连接至所述机身，所述防水圈与所述传动轴的周向表面抵接。
PCT/CN2021/131932 2021-11-12 2021-11-19 防水环组件、防水密封装置和外转子式设备 WO2023082311A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415166A (en) * 1983-01-31 1983-11-15 Cadillac Rubber & Plastics, Inc. Bearing seal assembly with dual annular support rings
US5171025A (en) * 1990-08-31 1992-12-15 Festo Kg Sealing arrangement for a valve and more particularly one in the form of a multi-way valve
CN104011395A (zh) * 2011-12-27 2014-08-27 格兰富控股联合股份公司 泵机组
CN105471157A (zh) * 2015-12-31 2016-04-06 卧龙电气集团股份有限公司 带防水结构的外转子电机
CN213520486U (zh) * 2020-12-14 2021-06-22 苏州信音汽车电子有限公司 铡刀式电动车用防水电池接口及电动车

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415166A (en) * 1983-01-31 1983-11-15 Cadillac Rubber & Plastics, Inc. Bearing seal assembly with dual annular support rings
US5171025A (en) * 1990-08-31 1992-12-15 Festo Kg Sealing arrangement for a valve and more particularly one in the form of a multi-way valve
CN104011395A (zh) * 2011-12-27 2014-08-27 格兰富控股联合股份公司 泵机组
CN105471157A (zh) * 2015-12-31 2016-04-06 卧龙电气集团股份有限公司 带防水结构的外转子电机
CN213520486U (zh) * 2020-12-14 2021-06-22 苏州信音汽车电子有限公司 铡刀式电动车用防水电池接口及电动车

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