CN216789224U

CN216789224U - Waterproof ring assembly, waterproof sealing device and outer rotor type equipment

Info

Publication number: CN216789224U
Application number: CN202122809468.3U
Authority: CN
Inventors: 黄惠臣
Original assignee: Shenzhen Jiahe Yunfan Technology Co ltd
Current assignee: Shenzhen Jiahe Yunfan Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-06-21
Anticipated expiration: 2031-11-12
Also published as: WO2023082311A1

Abstract

The utility model discloses a waterproof ring assembly, a waterproof sealing device and an outer rotor type device, wherein the outer rotor type device comprises a machine body and a motor with a transmission shaft, the waterproof ring assembly is sleeved on the transmission shaft and is connected to the machine body, the waterproof ring assembly comprises a first waterproof ring and a second waterproof ring, the second waterproof ring is positioned on one side of the first waterproof ring along the axial direction of a waterproof ring assembly, the first waterproof ring and the second waterproof ring form an accommodating part for fixing a waterproof ring, the accommodating part is provided with an inner side opening for the radial inner end of the waterproof ring to extend out, and the inner side opening faces the center of the waterproof ring assembly. According to the present invention, the waterproof ring is provided between the first waterproof ring and the second waterproof ring, so that the waterproof ring can be firmly and reliably attached to the body without rotating with the rotation of the transmission shaft. Therefore, the waterproof ring can be prevented from moving, inclining, shaking and the like in at least the axial direction, and the waterproof ring is prevented from being separated from the installation position in the rotating process of the transmission shaft and losing the waterproof capacity.

Description

Waterproof ring assembly, waterproof sealing device and outer rotor type equipment

Technical Field

The utility model relates to the technical field of outer rotor type equipment, in particular to a waterproof ring assembly, a waterproof sealing device and outer rotor type equipment.

Background

An outer rotor type device such as a slicer, in which an outer rotor can be connected to a drive shaft of a motor with a gap between the drive shaft and a body, requires waterproofing between the two. The existing waterproof structure usually adopts a rubber sealing ring for waterproofing, the rubber sealing ring is usually arranged at the through hole of the machine body in a setting mode, and the transmission shaft penetrates through the rubber sealing ring.

For above-mentioned rubber seal's mode of setting, rubber seal can rotate along with the transmission shaft, and this makes if rubber seal and fuselage frictional contact face are too big, can lead to rubber seal wearing and tearing to accelerate to rubber seal slides out original position easily in the operation of for example slicer, influences waterproof function.

Therefore, there is a need for a waterproof ring assembly, a waterproof sealing device, and an outer rotor type apparatus that at least partially solve the above problems.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content of the present invention is not intended to define key features or essential features of the claimed solution, nor is it intended to be used to limit the scope of the claimed solution.

To at least partially solve the above problems, the present invention provides a waterproof ring assembly for fixing a waterproof ring for an outer rotor type apparatus including a body and a motor having a driving shaft, the motor being disposed inside the body, the driving shaft penetrating out of the body and being rotatable, the waterproof ring assembly being sleeved on the driving shaft and being coupled to the body, the waterproof ring assembly including:

a first waterproof ring; and

the waterproof ring comprises a first waterproof ring and a second waterproof ring, wherein the first waterproof ring and the second waterproof ring are arranged on the axial side of the waterproof ring assembly, the first waterproof ring and the second waterproof ring form a containing part used for fixing the waterproof ring, the containing part is provided with an inner side opening used for extending out of the radial inner end of the waterproof ring, and the inner side opening faces to the center of the waterproof ring assembly.

Optionally, the accommodating portion includes a limiting wall surface for abutting against a radially outermost peripheral surface of the waterproof ring, a first limiting edge and a second limiting edge, and the first limiting edge is spaced from the second limiting edge in an axial direction of the waterproof ring assembly so as to sandwich the waterproof ring between the first limiting edge and the second limiting edge.

Optionally, at least one of the first waterproof ring and the second waterproof ring is provided with the limiting wall surface, the limiting wall surface 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, and the second waterproof ring is provided with the second limiting edge.

Optionally, at least one of the first waterproof ring and the second waterproof ring is provided with a screw hole at intervals for connecting with the fuselage.

Optionally, first waterproof ring is located keeping away from of second waterproof ring one side of fuselage, first waterproof ring is provided with two at least double-screw bolts that take the screw at intervals, second waterproof ring is provided with two at least spacing mouths at intervals, the double-screw bolt is located in the spacing mouth, and the circumferential surface of double-screw bolt with the wall butt of spacing mouth.

Optionally, the limiting opening is a notch or a circumferentially closed opening.

Optionally, the first waterproof ring is provided with a limiting wall at intervals, the limiting wall extends towards the side where the second waterproof ring is located, the limiting wall is located between the adjacent studs, and the second waterproof ring is located on the inner side, close to the center of the waterproof ring assembly, of the limiting wall and abuts against the limiting wall.

Optionally, one of the first waterproof ring and the second waterproof ring is provided with a positioning portion, and the other of the first waterproof ring and the second waterproof ring is provided with a positioning opening, and the positioning portion is located in the positioning opening.

Optionally, the outer circumference of the first waterproof ring is circular or elliptical;

or the outer peripheral surface of the first waterproof ring includes at least one arc surface and at least one straight surface, the arc surface being connected to the straight surface or to another of the arc surfaces;

or the outer circumference of the first waterproof ring is polygonal.

According to another aspect of the present invention, there is provided a waterproof sealing device for an outer rotor type apparatus, the waterproof sealing device comprising a waterproof ring and a waterproof ring assembly according to any one of the above aspects, the waterproof ring being disposed between the first waterproof ring and the second waterproof ring and located within the housing, and a radially inner end of the waterproof ring projecting from an inner side opening of the housing.

Optionally, the waterproof ring is an elastically deformable member.

According to another aspect of the present invention, there is provided an outer rotor type apparatus including a body, a motor having a driving shaft, the motor being provided inside the body, the driving shaft being protruded from the body and being rotatable, and the waterproof sealing device according to any one of the above aspects, the waterproof sealing device being fitted over the driving shaft and being connected to the body, the waterproof ring being abutted against a circumferential surface of the driving shaft.

According to the present invention, the waterproof ring is provided between the first waterproof ring and the second waterproof ring, so that the waterproof ring can be firmly and reliably attached to the body without rotating with the rotation of the transmission shaft. Therefore, the waterproof ring can be prevented from moving, inclining, shaking and the like in at least the axial direction, and the waterproof ring is prevented from being separated from the installation position and losing the waterproof capacity in the rotating process of the transmission shaft. The friction force between the waterproof ring and the rotating shaft can be set to be as small as possible, so that the waterproof ring is prevented from being abraded quickly due to overlarge friction force between the waterproof ring and the transmission shaft, and the service life of the waterproof ring can be prolonged; and the heat generated by friction is lower, which is beneficial to prolonging the service life of the waterproof ring.

The waterproof structure provided by the utility model can effectively seal the gap between the transmission shaft and the machine body, prevent fluid from entering the machine body from the gap, reliably keep the waterproof ring at the installation position, further improve the waterproof capability, has good integral wear resistance and longer service life, thereby reducing the replacement frequency of the waterproof ring 20 and reducing the maintenance cost of equipment.

Drawings

The following drawings of the utility model are included to provide a further understanding of the utility model. The drawings illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

In the drawings:

fig. 1 is a perspective view of a watertight sealing device according to the present invention;

FIG. 2 is another perspective view of the watertight sealing apparatus shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a sectional view similar to FIG. 3 with the waterproof ring removed;

FIG. 5 is a cross-sectional exploded view of the watertight sealing apparatus shown in FIG. 1;

FIG. 6 is an exploded perspective view of the watertight seal shown in FIG. 1;

fig. 7 is another exploded perspective view of the watertight sealing apparatus shown in fig. 1.

Description of reference numerals:

10 waterproof sealing device 100 waterproof ring assembly

110 first waterproof ring 111 first limit wall

112 first limit edge 113 screw hole

114 stud 115 stop wall

116 inner peripheral wall 117 connecting walls

118 outer peripheral wall 120 second waterproof ring

121 second limiting wall surface 122 second limiting edge

123 limit port 124 step

130 opening on the inner side of the accommodating part 131

141 positioning part 142 positioning opening

20 waterproof ring

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the utility model.

In the following description, a detailed description will be given in order to thoroughly understand the present invention. It is apparent that the implementation of the embodiments of the utility model is not limited to the specific details familiar to those skilled in the art. The following detailed description of the preferred embodiments of the utility model, however, the utility model is capable of other embodiments in addition to those detailed.

It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

Ordinal words such as "first" and "second" are referred to herein merely as labels, and do not have any other meaning, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".

It is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for purposes of illustration only and are not limiting.

Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.

The present invention provides a waterproof sealing apparatus which can be used for an outer rotor type apparatus. Specifically, the outer rotor type apparatus may include a body, a motor with a transmission shaft, and an outer rotor. The motor is arranged in the machine body, the transmission shaft can penetrate out of the machine body and can rotate, and particularly the transmission shaft can rotate relative to the machine body around the central axis of the transmission shaft. The outer rotor can be connected with the transmission shaft to rotate along with the transmission shaft. The waterproof sealing device can be sleeved on the transmission shaft and connected to the machine body so as to seal a gap between the transmission shaft and the machine body. The outer rotor type device may be, for example, any device such as a slicer, blender, fan, etc.

The waterproof sealing device 10 is described in detail below with reference to fig. 1 to 7.

As shown in fig. 1 to 3, the waterproof sealing apparatus 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 body. The waterproof ring 20 is disposed within the waterproof ring assembly 100. The waterproof ring 20 is an elastically deformable member. The flashing ring 20 may be made of any elastically deformable material, such as rubber or the like. Alternatively, the waterproof ring 20 may be a rubber ring. Specifically, flashing ring assembly 100 may include a first flashing ring 110 and a second flashing ring 120. Second waterproofing ring 120 is located on one side of first waterproofing ring 110 in axial direction D1 of waterproofing ring assembly 100. Further, the first flashing ring 110 may be located on a side of the second flashing ring 120 remote from the fuselage. In the illustrated embodiment, the fuselage-facing mounting surface of the watertight sealing device 10 is facing downwards, and the first watertight ring 110 is located above the second watertight ring 120. First waterproof ring 110 and second waterproof ring 120 are each rigid members having a suitable rigidity, and first waterproof ring 110 and second waterproof ring 120 may each be made of any rigid material having a suitable rigidity, such as metal, plastic, and the like.

It should be noted that directional terms used herein to describe various components, portions, etc. of the watertight sealing apparatus 10, such as "upper", "lower", "above", "below", "upward", "downward", etc., are relative to the watertight sealing apparatus 10 being placed horizontally with the mounting surface facing downward (i.e., the placed state shown in fig. 1).

It is understood that the axial direction of the waterproof ring assembly 100 is parallel to both the axial direction of the driving shaft and the waterproof ring 20, the radial direction of the waterproof ring assembly 100 is parallel to both the radial direction of the driving shaft and the waterproof ring 20, and the circumferential direction of the waterproof ring assembly 100 is parallel to both the circumferential direction of the driving shaft and the waterproof ring 20. And, the axial center line of the waterproof ring assembly 100 is collinear with the central axis of the drive shaft and the axial center line of the waterproof ring 20.

In the drawings, for simplicity, both the axial direction of the waterproof ring assembly 100 and the axial direction of the waterproof ring 20 are denoted by D1, similarly, both the radial direction of the waterproof ring assembly 100 and the radial direction of the waterproof ring 20 are denoted by D2, and both the circumferential direction of the waterproof ring assembly 100 and the circumferential direction of the waterproof ring 20 are denoted by D3.

As shown in fig. 4, the first waterproof ring 110 and the second waterproof ring 120 constitute a receiving portion 130 for fixing the waterproof ring 20. Waterproof ring 20 is disposed between first waterproof ring 110 and second waterproof ring 120 and within receiving portion 130. The receptacle 130 has an inner opening 131 for the waterproof ring 20 to protrude, the inner opening 131 facing the center of the waterproof ring assembly 100. The waterproof ring 20 may protrude from the inner opening 131 of the receiving portion 130 (see fig. 3) such that the waterproof ring 20 can abut against the circumferential surface of the drive shaft. In other words, the outer end of the waterproof ring 20 in the radial direction D2 is located in the accommodating portion 130, and the inner end of the waterproof ring in the radial direction D2 extends out of the inner opening 131 of the accommodating portion 130.

In this embodiment, by providing the waterproof ring 20 between the first waterproof ring 110 and the second waterproof ring 120, the waterproof ring 20 can be firmly and reliably attached to the body without rotating with the rotation of the transmission shaft. Therefore, the waterproof ring 20 can be prevented from moving, inclining, shaking and the like in at least the axial direction D1, and the waterproof ring 20 can be prevented from being separated from the mounting position and losing the waterproof capability in the process of rotating the transmission shaft. The friction force between the waterproof ring 20 and the rotating shaft can be set to be as small as possible, so that the waterproof ring 20 is prevented from being abraded quickly due to overlarge friction force with the transmission shaft, and the service life of the waterproof ring can be prolonged; and the heat generated by friction is lower, which is beneficial to prolonging the service life of the waterproof ring 20.

The waterproof structure that this embodiment provided can effectively seal the clearance between transmission shaft and the fuselage, prevents inside fluid gets into the fuselage from this clearance, and waterproof circle 20 can keep at the mounted position reliably, has further promoted waterproof ability to whole wearability is good, and waterproof circle 20 life is longer, thereby can reduce waterproof circle 20's change frequency, reduces the maintenance cost of equipment.

It is noted that, unless otherwise limited, directional terms used herein, such as "inner" in "inward", "outward", "inside", "outside", and the like, refer to being closer to the center of the watertight sealing apparatus 10, and "outer" refers to being farther from the center of the watertight sealing apparatus 10.

The receiving portion 130 may include a stopper wall surface, a first stopper edge 112, and a second stopper edge 122. The stopper wall surface can abut against the outermost peripheral surface of the waterproof ring 20 in the radial direction D2 to restrict the position of the waterproof ring 20 in the direction perpendicular to the axial direction D1, and prevent the waterproof ring from moving, shaking, and the like in the direction perpendicular to the axial direction D1. First position-limiting rim 112 can be spaced from second position-limiting rim 122 in axial direction D1 of waterproof ring assembly 100 so as to sandwich waterproof ring 20 between first position-limiting rim 112 and second position-limiting rim 122, thereby limiting the position of waterproof ring 20 in axial direction D1 and preventing it from moving, tilting, wobbling, etc. in axial direction D1.

At least one of the first waterproof ring 110 and the second waterproof ring 120 may be provided with a stopper wall surface. The retaining wall extends in the axial direction D1 and faces the center of the waterproofing ring assembly 100. The stopper wall surface may be an annular wall surface extending in the circumferential direction D3, and more specifically, may be, for example, an annular wall surface extending in the circumferential direction D3. As shown in fig. 5, for the illustrated embodiment, the first waterproof ring 110 is provided with a first stopper wall surface 111 and a first stopper edge 112, and the first stopper edge 112 is located inside the first stopper wall surface 111 and connected to the first stopper wall surface 111. The second waterproof ring 120 is provided with a second stopper wall 121 and a second stopper edge 122, and the second stopper edge 122 is located inside the second stopper wall 121 and connected to the second stopper wall 121.

In other embodiments, not shown, first flashing ring 110 may be provided with a retaining wall and a first retaining edge 112, and second flashing ring 120 is provided with a second retaining edge 122. The first stop wall 111 may extend to the second stop edge 122 or near the second stop edge 122. Alternatively, first flashing ring 110 may be provided with a first stopper edge 112 and second flashing ring 120 with a stopper wall and a second stopper edge 122. The stop wall surface may extend to the first stop edge 112 or proximate to the second stop edge 122.

First waterproof ring 110 and second waterproof ring 120 may each be an annular member that is closed circumferentially D3.

As shown in fig. 6, the central hole of the first waterproof ring 110 is circular, having an inner diameter d 1. The central hole of second waterproofing ring 120 is circular with an inner diameter d 2. The waterproof ring 20 is circular with an outer diameter d31 and an inner diameter d 32. With the approximate positions of d1, d2, d31, and d32 schematically indicated 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 circumferential shape of the first waterproof ring 110 is not limited, and more specifically, referring to fig. 7, the first waterproof ring 110 has an outer circumferential surface F1, and the projected shape of the outer circumferential surface F1 on a plane perpendicular to the axial direction D1 is not limited and may be set according to an actual installation environment, for example, may be set according to the shape of a fuselage. It is schematically shown that the outer circumferential surface F1 of the first waterproofing ring 110 extends in the axial direction D1.

One example is that the outer circumferential shape of the first waterproof ring 110 is a circle or an ellipse. Specifically, the first waterproof ring 110 has a circular or elliptical outer circumferential surface.

Another example is that the outer circumferential shape of the first waterproof ring 110 is irregular. Specifically, the outer circumferential surface F1 of the first waterproof ring 110 may include at least one arc surface F11 and at least one flat surface F12. The curved surface F11 may be connected to a straight surface F12 or to another curved surface F11. For example, in one embodiment, the outer peripheral surface F1 may include an arcuate surface F11 and a flat surface F12. Both ends of the arc surface F11 are connected to the flat surface F12. In this embodiment, optionally, the central angle of the arcuate surface F11 is preferably greater than or equal to 180 °. In another embodiment, the outer peripheral surface F1 may include one arcuate surface F11 and at least two flat surfaces F12. The curved surface F11 is connected at both ends to different flat surfaces F12. Still another embodiment, the outer peripheral surface F1 may include at least two arcuate surfaces F11 and at least two flat surfaces F12. The two ends of the arc surface F11 may be connected to different flat surfaces F12, respectively. For the illustrated embodiment, two flat surfaces are shown, separated by an arcuate surface F11, and may be oppositely facing and symmetrical to each other.

As still another example, the outer circumferential shape of the first waterproof ring 110 is a polygon. Specifically, the outer circumferential surface F1 of the first waterproof ring 110 may include at least three flat surfaces F12. At least three flat surfaces F12 are connected in series. Thus, the outer circumferential shape of first waterproof ring 110 may be formed in any polygonal shape such as a triangle, a square, a trapezoid, or the like.

The waterproof ring assembly 100 may be attached to the fuselage in any suitable manner, such as by fastening with fasteners, snapping, welding, and the like. As one example, the waterproofing ring assembly 100 may be removably attached to the fuselage, for example, by fastening with fasteners. Specifically, at least one of the first waterproof ring 110 and the second waterproof ring 120 may be provided with screw holes 113 at intervals for connection with the body. The screw holes 113 are provided at intervals in the circumferential direction D3. The fastener is fixed to the body through the screw hole 113. The fastener may be a screw.

As shown in fig. 6 and 7, first waterproof ring 110 may be provided with studs 114 having screw holes 113 at intervals. The second waterproof ring 120 may be provided with a spacing opening 123 at intervals. The position of the limiting opening 123 corresponds to the position of the stud 114. The number of the studs 114 is at least two, and correspondingly, the number of the limiting ports 123 is at least two. Three screw holes 113 and three limit ports 123 are schematically shown. Referring to fig. 2, the stud 114 can be located within the limit stop 123, and a circumferential surface of the stud 114 abuts a wall surface of the limit stop 123. In this embodiment, fasteners are passed through threaded holes 113 of studs 114 to connect first flashing ring 110 to the fuselage, and second flashing ring 120 is sandwiched between first flashing ring 110 and the fuselage. By providing the stopper opening 123, movement of the second flashing ring 120 relative to the first flashing ring 110, in particular relative to the first flashing ring 110 in a direction at least perpendicular to the axial direction D1, and rotation relative to the first flashing ring 110 can be prevented.

The spacing opening 123 is shown as a notch. That is, the stopper hole 123 is not closed in the circumferential direction D3 and has an opening. More specifically, the limiting opening 123 is, for example, a semicircular notch. By providing the notch, the size of the radial direction D2 of the second waterproof ring 120 can be reduced, which is beneficial to reducing material cost. If needed and/or desired, the spacing port 123 can be a circumferentially closed port, such as a circular port.

The first waterproof ring 110 may be provided with a stopper wall 115 at intervals. Limiting wall 115 may extend toward the side of second waterproofing ring 120 such that limiting wall 115 protrudes from the lower surface of first waterproofing ring 110. A retaining wall 115 is located between adjacent studs 114. The second flashing ring 120 is located inside the retaining wall 115 near the centre of the flashing ring assembly 100 and the second flashing ring 120 abuts the retaining wall 115. Thereby, a movement of second waterproofing ring 120 relative to first waterproofing ring 110, in particular a movement in a direction perpendicular to axial direction D1 relative to first waterproofing ring 110 may be further prevented. The retaining wall 115 is arcuate in shape extending in the circumferential direction D3 and may be connected to the stud 114.

One of first and second flashing rings 110, 120 may be provided with a positioning portion 141 (fig. 7), and the other of first and second flashing rings 110, 120 may be provided with a positioning opening 142 (fig. 6). Referring to fig. 2, the positioning part 141 can be located within the positioning hole 142. In the illustrated embodiment, the first waterproof ring 110 is provided with a positioning portion 141, and the second waterproof ring 120 is provided with a positioning opening 142. The size of the positioning port 142 is generally smaller than the size of the stop port 123. By providing the positioning portion 141 and the positioning port 142, rapid assembly can be achieved, and assembly efficiency can be improved. During assembly, the positioning portion 141 is aligned with the positioning opening 142, the first waterproof ring 110 and the second waterproof ring 120 are placed in a close fit manner, the positioning portion 141 is located in the positioning opening 142, and the stud 114 is located in the limiting opening 123. This is more advantageous for embodiments where the outer circumferential shape of first waterproofing ring 110 is non-circular.

The first waterproofing ring 110 may also be provided with a support wall and an outer circumferential wall 118. Support and peripheral wall 118 may extend towards the side of second waterproofing ring 120 such that support and peripheral wall 118 protrudes from the lower surface of first waterproofing ring 110. The support wall is located inside the stopper wall 115 near the center of the waterproof ring assembly 100, and the stopper wall 115 protrudes from the support wall. The support wall can abut against the second waterproofing ring 120. As one example, the support wall may include an inner circumferential wall 116 and a connecting wall 117. The inner circumferential wall 116 is circular and located outside the first stopper edge 112. The inner circumferential wall 116 can abut against the waterproof ring 20. Specifically, a surface of the inner circumferential wall 116 facing the center of the first waterproof ring 110 is a first stopper wall surface 111 that can abut against the waterproof ring 20. The inner circumferential wall 116 is connected to the stopper wall 115 through a connecting wall 117. The connecting wall 117 extends in the radial direction D2 and is disposed at intervals in the circumferential direction D3. Outer peripheral wall 118 is located outside of stud 114 away from the center of waterproof ring assembly 100. Peripheral wall 118 may be connected to stud 114. The positioning part 141 may be provided to the connection wall 117, specifically, to a surface of the connection wall 117 facing the second waterproof ring 120.

By providing the support wall, the structural strength of the first waterproof ring 110 may be enhanced. Through setting up periphery wall 118, can cover the inner structure of waterproof sealing device 10, avoid liquid to get into the inside of waterproof sealing device 10, and then get into the inside of fuselage to the outer structure that makes waterproof sealing device 10 is succinct, pleasing to the eye.

Second flashing ring 120 may be provided with a step 124 around its central aperture. Step 124 is recessed away from the side of first flashing ring 110. The surface of the step 124 extending in the axial direction D1 is a second stopper wall surface 121, and the bottom of the step 124 is formed as a second stopper edge 122.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the utility model to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, all of which fall within the scope of the present invention as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A waterproofing ring assembly for securing a waterproofing ring for an outer rotor type device comprising a body and a motor with a drive shaft, the motor disposed within the body, the drive shaft extending out of the body and being rotatable, wherein the waterproofing ring assembly is sleeved over the drive shaft and connected to the body, the waterproofing ring assembly comprising:

a first waterproof ring; and

2. The flashing ring assembly of claim 1, wherein the receptacle comprises a retaining wall for abutment with a radially outermost peripheral surface of the flashing ring, a first retaining rim spaced from the second retaining rim in an axial direction of the flashing ring assembly so as to sandwich the flashing ring between the first retaining rim and the second retaining rim.

3. The flashing ring assembly of claim 2, wherein at least one of the first flashing ring and the second flashing ring is provided with the retaining wall extending in the axial direction and facing towards the centre of the flashing ring assembly, the first flashing ring being provided with the first retaining rim and the second flashing ring being provided with the second retaining rim.

4. A flashing ring assembly according to any of claims 1-3, wherein at least one of the first flashing ring and the second flashing ring is provided at intervals with screw holes for connection with the fuselage.

5. The waterproof ring assembly of claim 4, wherein said first waterproof ring is located on a side of said second waterproof ring away from said fuselage, said first waterproof ring is provided with at least two studs with screw holes at intervals, said second waterproof ring is provided with at least two limiting openings at intervals, said studs are located in said limiting openings, and circumferential surfaces of said studs abut against wall surfaces of said limiting openings.

6. The waterproof ring assembly of claim 5, wherein said retaining opening is a notch or a circumferentially closed opening.

7. The flashing ring assembly of claim 6, wherein the first flashing ring is provided with a spacing wall at intervals extending towards the side of the second flashing ring, the spacing wall being located between adjacent studs, and the second flashing ring being located inside the spacing wall near the centre of the flashing ring assembly and abutting the spacing wall.

8. The flashing ring assembly of any of claims 1-3, wherein one of the first and second flashing rings is provided with a locating portion and the other of the first and second flashing rings is provided with a locating opening, the locating portion being located within the locating opening.

9. The waterproof ring assembly of any one of claims 1 to 3,

the outer periphery of the first waterproof ring is circular or elliptical;

or the outer peripheral surface of the first waterproof ring comprises at least one arc-shaped surface and at least one straight surface, and the arc-shaped surface is connected with the straight surface or is connected with the other arc-shaped surface;

or the outer circumference of the first waterproof ring is polygonal.

10. A watertight sealing device for an outer rotor type apparatus, characterized by comprising a watertight ring and a watertight ring assembly according to any one of claims 1 to 9, the watertight ring being arranged between the first and second watertight rings and being located inside the housing, and a radially inner end of the watertight ring protruding from an inner side opening of the housing.

11. The watertight sealing device according to claim 10, characterized in that the watertight ring is an elastically deformable member.

12. An outer rotor type apparatus comprising a body, a motor having a driving shaft, and the waterproof sealing device according to claim 10 or 11, wherein the motor is disposed inside the body, the driving shaft is protruded from the body and is rotatable, the waterproof sealing device is sleeved on the driving shaft and is connected to the body, and the waterproof ring is abutted against a circumferential surface of the driving shaft.