Motor and water channel sealing structure of motor stretching shell

Abstract

The utility model discloses a motor and a water channel sealing structure of a motor stretching shell thereof, a water channel is provided with an opening for cooling liquid to flow in and out, the water channel penetrates through two ends of the motor stretching shell in the length direction and is provided with two mounting ports, and the part of the water channel between the two mounting ports is a main body part. The width of the main body part is smaller than that of the mounting ports, the water channel sealing structure comprises two sealing rings, the two sealing rings are arranged in the two mounting ports respectively, each sealing ring comprises a supporting piece and a sealing piece which are arranged from inside to outside, each sealing piece wraps the corresponding supporting piece, a first concave-convex structure is arranged on the outer side wall of each sealing piece, and a second concave-convex structure is arranged on the outer side wall of each sealing piece. The first concave-convex structure is in contact with the side walls of the two sides of the mounting opening and then is stressed to deform so as to seal the mounting opening. According to the technical scheme, the wall thickness of the motor stretching shell can be correspondingly reduced, so that light weight is achieved, the material cost is reduced, the depth of a sealing ring groove does not need to be reserved excessively, and machining procedures are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motor stretch housings, in particular to a motor and a water channel sealing structure of the motor stretch housing. Background Art

[0002] The motor stretch housing is a motor shell, usually made of aluminum or aluminum alloy material, processed by a stretching process. This housing has excellent heat dissipation performance and mechanical strength, can effectively protect the components inside the motor, and improve the service life and stability of the motor. During the operation of the motor, heat is generated due to the current passing through the winding and the core. If this heat is not dissipated in time, the motor temperature will rise, which will affect the efficiency and life of the motor. By designing water channels inside the motor stretch housing, coolant or water can circulate through these water channels, exchange heat with the heat inside the motor, take away the heat and dissipate it to the external environment.

[0003] See also Figure 6 The common water channel sealing structure currently uses an O-type sealing ring. A sealing ring groove 4 is processed on the inner and outer sides of the water channel of the motor stretching housing respectively, and then O-type sealing rings are installed in the two sealing ring grooves 4 respectively. The sealing ring is compressed through the cooperation of the end cover and the motor stretching housing to achieve the water channel sealing of the motor stretching housing.

[0004] The use of O-rings has the following disadvantages:

[0005] 1. The processing volume is large. The shell needs to do a lot of material removal and process the stepped double stop. The motor end cover that matches it also needs to make a corresponding stepped structure, which is prone to casting defects.

[0006] 2. The wall thickness of the motor stretch housing cannot be made too thin, otherwise after the sealing ring groove is processed, the remaining wall thickness at the bottom of the sealing ring groove will be insufficient, affecting the structural strength. Utility Model Content

[0007] Therefore, it is necessary to provide a water channel sealing structure for a motor and a motor stretch housing thereof to solve the problem that when an O-ring is used to seal the water channel, the processing amount is large and the motor stretch housing requires a larger wall thickness.

[0008] To achieve the above-mentioned purpose, the present embodiment provides a water channel sealing structure of a motor stretching housing, wherein the water channel is provided with an open opening for the coolant to enter and exit, the water channel passes through both ends of the motor stretching housing in the length direction, and forms two installation openings, the portion of the water channel between the two installation openings is the main portion, the width of the main portion is smaller than the width of the installation opening, the water channel sealing structure comprises two sealing rings, the two sealing rings are respectively arranged in the two installation openings, the sealing ring comprises a support member and a sealing member arranged from the inside to the outside, the sealing member wraps the support member, the outer side wall of the sealing member is provided with a first concave-convex structure, and the first concave-convex structure is deformed by force after contacting the side walls on both sides of the installation opening to seal the installation opening.

[0009] Furthermore, the depth of the installation opening is greater than the thickness of the sealing ring.

[0010] Furthermore, the depth of the installation opening is set to A1, the thickness of the sealing ring is set to A2, and A2+0.1mm<A1<A2+0.5mm.

[0011] Furthermore, the first concave-convex structure is provided with at least two convex parts.

[0012] Furthermore, the inner wall of the sealing member is provided with a second concave-convex structure, the outer wall of the supporting member is provided with a third concave-convex structure, and the second concave-convex structure is plugged into the third concave-convex structure.

[0013] Furthermore, the support member is in an I-shape.

[0014] Furthermore, the support member is a metal frame.

[0015] Furthermore, the opening of the installation opening is chamfered.

[0016] Furthermore, the sealing element is a rubber sealing ring.

[0017] To achieve the above-mentioned purpose, the present embodiment further provides a motor, comprising a water channel sealing structure of a motor tensile housing as described in any one of the above-mentioned embodiments.

[0018] Different from the prior art, the above technical scheme provides a water channel sealing structure of a motor and its motor stretching housing, in which a wider installation opening is formed at the water channel end of the motor stretching housing, and the support member provides a stable structural support for the seal, so that the sealing ring is more stable in the installation opening and is not easy to fall off or shift. The first concave-convex structure can deform when subjected to force, has a suitable amount of compression, and better fits the side wall of the installation opening. Since there is no existing sealing ring groove to weaken the housing structure, the technical scheme can reduce the wall thickness of the motor stretching housing accordingly, thereby achieving lightweight and reducing material costs, especially in low-power motors. Due to the reduction in product performance, the required structural strength is reduced. This scheme does not need to excessively reserve the depth of the sealing ring groove, which has obvious advantages, and only one end of the water channel can be sealed with a sealing ring, reducing the processing steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An exploded view of the motor tensile housing, sealing ring and end cover in this embodiment;

[0020] Figure 2 for Figure 1 A magnified view of the middle A area;

[0021] Figure 3 for Figure 1 Enlarged view of the B area;

[0022] Figure 4 This is a schematic diagram of the connection between the motor tensile housing, the sealing ring and the end cover in this embodiment;

[0023] Figure 5 for Figure 4 Enlarged view of the middle C area;

[0024] Figure 6 A schematic diagram of the structure of an O-type sealing ring of the background technology;

[0025] Figure 7 This is a schematic diagram showing a size comparison between the water channel sealing structure in this embodiment and the O-ring in the prior art;

[0026] Figure 8 This is the second schematic diagram comparing the dimensions of the water channel sealing structure in this embodiment and the O-ring in the prior art.

[0027] Description of reference numerals:

[0028] 1. Stretch the motor housing;

[0029] 11. Waterway; 12. Main body; 13. Installation port;

[0030] 2. Sealing ring;

[0031] 21. Support member; 22. Third concavo-convex structure; 23. Sealing member; 24. First concavo-convex structure;

[0032] 25. second concavo-convex structure; 26. convex portion;

[0033] 3. End cap;

[0034] 4. Sealing ring groove. DETAILED DESCRIPTION

[0035] In order to explain the technical content, structural features, achieved objectives and effects of the technical solution in detail, the following is a detailed description in conjunction with specific embodiments and accompanying drawings.

[0036] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0037] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0038] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0039] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0040] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0041] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0042] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0043] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] The common existing water channel sealing structure uses an O-ring, which is achieved by processing a sealing ring groove on the inner and outer sides of the water channel of the motor stretch housing, and then installing O-rings in the two sealing ring grooves. The sealing ring is compressed through the cooperation of the end cover and the motor stretch housing to achieve the water channel sealing of the motor stretch housing.

[0045] The use of O-rings has the following disadvantages:

[0046] 1. The processing volume is large. The shell needs to do a lot of material removal and process the stepped double stop. The motor end cover that matches it also needs to make a corresponding stepped structure, which is prone to casting defects.

[0047] 2. The wall thickness of the motor stretch housing cannot be made too thin, otherwise after the sealing ring groove is processed, the remaining wall thickness at the bottom of the sealing ring groove will be insufficient, affecting the structural strength;

[0048] 3. The processing volume is large. The motor stretch housing needs to be processed with a large amount of material to produce a stepped double stop. Special tools are required to process the sealing ring groove. If the cutting volume is small, the tool will break easily. The overall processing time is long and materials are wasted.

[0049] See also Figure 1 to Figure 2 The present embodiment provides a water channel sealing structure of a motor stretch housing, wherein the water channel 11 is provided with an open opening for coolant to enter and exit, the water channel 11 passes through both ends of the motor stretch housing 1 in the length direction, and is formed with two mounting openings 13, the portion of the water channel 11 between the two mounting openings 13 is a main body 12, the width of the main body 12 is smaller than the width of the mounting opening 13, the water channel sealing structure comprises two sealing rings 2, the two sealing rings 2 are respectively arranged in the two mounting openings 13, the sealing ring 2 comprises a support member 21 and a sealing member 23 arranged from the inside to the outside, the sealing member 23 wraps the support member 21, the outer side wall of the sealing member 23 is provided with a first concave-convex structure 24, the first concave-convex structure 24 is deformed by force after contacting the side walls on both sides of the mounting opening 13 to seal the mounting opening 13.

[0050] One sealing ring 2 corresponds to one mounting opening 13. In the sealing ring 2, the support member 21 is located on the inner side and plays a structural support role. The sealing member 23 is wrapped on the outer side of the support member 21 and is in close contact with the side wall of the mounting opening 13 to form a sealing effect. Since the outer side wall of the sealing member 23 is provided with a first concave-convex structure 24, it can be deformed when subjected to force, has a suitable amount of compression, and better fits the side wall of the mounting opening 13 to enhance the sealing effect.

[0051] Different from the prior art, the above technical scheme provides a water channel sealing structure, in which a wider installation opening 13 is formed at the end of the water channel 11 of the motor stretch housing 1, and the support member 21 provides a stable structural support for the seal 23, so that the sealing ring 2 is more stable in the installation opening 13 and is not easy to fall off or shift. The first concave-convex structure 24 can deform when subjected to force, has a suitable amount of compression, and better fits the side wall of the installation opening 13. Since there is no existing sealing ring groove to weaken the housing structure, the technical scheme can reduce the wall thickness of the motor stretch housing 1 accordingly, thereby achieving lightweight and reducing material costs, especially in low-power motors. Because the product performance is reduced, the required structural strength is reduced. This scheme does not need to reserve excessive depth of the sealing ring groove, which has obvious advantages, and only one sealing ring 2 is required to seal one end of the water channel 11, reducing the processing steps.

[0052] See also Figures 2 to 5 In this embodiment, the depth of the mounting opening 13 ( Figure 3A1) is greater than the thickness of the sealing ring 2 ( Figure 2 As shown in A2, the sealing ring 2 is slightly lower than the edge of the installation opening 13 after being installed in place. When the two end covers 3 are respectively covered at both ends of the motor stretch housing 1 in the length direction, the end covers 3 do not contact the sealing ring 2. The gap between the end covers 3 and the motor stretch housing 1 is large enough to accommodate the existence of the sealing ring 2 without directly having physical contact with the sealing ring 2. The structure is as follows: Figure 4 and Figure 5 As shown, the end cover 3 can be normally fitted on the end surface of the motor tensile housing 1 without being disturbed by the sealing ring 2, thereby avoiding affecting the assembly of the end cover 3. In addition, the end cover 3 can play a limiting role to prevent the internal high pressure from squeezing out the sealing ring 2.

[0053] See also Figure 2 and Figure 3 In this embodiment, the depth of the installation opening 13 is set to A1, and the thickness of the sealing ring 2 is set to A2. According to different sizes of A2, different numbers of protrusions 26 are distributed on both sides, the number of protrusions on one side is n, the height of the protrusion 26 is h, and the arc of the protrusion 26 is R. The inner diameter d1 and outer diameter d2 of the sealing ring 2 are designed according to the inner wall diameter d3 and the outer wall diameter d4 of the installation opening 13, and the inner diameter d3 and outer diameter d4 of the assembly installation opening are processed according to the inner wall diameter d5 and the outer wall diameter d6 of the water channel while ensuring that the processing surface is exposed to light according to the cutting allowance. The dimensions of the wall thickness L1 and L2 on both sides of the installation opening 13 only need the shell strength to meet the support of the sealing ring 2. According to the size of the motor product and the actual situation, the minimum can be less than 3mm.

[0054] The dimension boundary table of the sealing ring and the housing is shown in Table 1:

[0055] Table 1 Size Boundary Table

[0056]

[0057]

[0058] Assuming the inner diameter of the shell is 120mm, the machining allowance is calculated as 1mm:

[0059] See also Figure 7 The cross section shown in a is R1 = 60mm, R2 = 66mm, R3 = 71mm, R4 = 77mm, and the minimum wall thickness of the blank is 6mm. If the O-ring solution is used, the standard O-ring with a wire diameter of 2.65 is selected, and the groove depth of the processing seal ring installation is 2mm, the minimum remaining wall thickness of the shell (bottom of the groove) is 3mm, and the weight of the blank per meter is 15.35kg / m. Please refer to Figure 7The cross section shown in b uses the sealing solution of the present application, R5 = 60mm, the inner wall of the water channel R6 = 64.5mm, the outer wall of the water channel R7 = 69.5mm, R8 = 73.5mm, the minimum inner wall thickness of the shell blank is 4.5mm, and the minimum outer wall thickness is 4mm. After processing, the remaining minimum wall thickness of the inner wall of the installation port is 3.5mm, and the remaining minimum wall thickness of the outer wall of the installation port is 3mm. The weight of the blank per meter is 11.35kg / m.

[0060] The inner diameter of the shell is 180 mm (millimeter), and the machining allowance is calculated as 1 mm:

[0061] See also Figure 8 The cross section shown in c is R9 = 90mm, R10 = 96mm, R11 = 103mm, R12 = 109mm, and the minimum wall thickness of the blank is 6mm. If the O-ring solution is used, the standard O-ring with a wire diameter of 2.65 is selected, and the groove depth of the processing seal ring installation is 2mm, the minimum remaining wall thickness of the shell (bottom of the groove) is 3mm, and the weight of the blank per meter is 23.62kg / m. Please refer to Figure 8 The cross section shown in d uses the sealing solution of the present application, R13 = 90mm, the inner wall of the water channel R14 = 95mm, the outer wall of the water channel R15 = 102mm, R16 = 106mm, the minimum inner wall thickness of the shell blank is 5mm, and the minimum outer wall thickness is 4mm. After processing, the remaining minimum wall thickness of the inner wall of the installation port is 4mm, and the remaining minimum wall thickness of the outer wall of the installation port is 3mm. The weight of the blank per meter is 18.23kg / m.

[0062] Table 2 Comparison of shell dimensions between the present application and the prior art

[0063]

[0064] See also Figure 2 In this embodiment, the first concave-convex structure 24 is provided with at least two raised portions 26, and the two raised portions 26 have the same height and are arranged in sequence. The raised portions 26 are arranged in a regular or irregular manner on the outer wall of the sealing member 23, and the raised portions are also called raised sealing lips. As an embodiment, Figure 2 It is shown that one side wall of the first concave-convex structure 24 has two protrusions 26, and both side walls have a total of four protrusions 26. In some embodiments, the first concave-convex structure 24 may have one, three, six, or other protrusions.

[0065] See also Figure 2 In this embodiment, the inner wall of the sealing member 23 is provided with a second concave-convex structure 25, the outer wall of the supporting member 21 is provided with a third concave-convex structure 22, and the second concave-convex structure 25 is plugged into the third concave-convex structure 22. As an implementation method, Figure 2It is shown that the second concave-convex structure 25 is provided with one convex portion, the third concave-convex structure 22 is provided with two convex portions, a concave portion is formed between the two convex portions of the third concave-convex structure 22, the support member 21 is an I-shaped, the convex portion of the second concave-convex structure 25 can be inserted into the concave portion of the third concave-convex structure 22, and in this embodiment, the convex portion of the second concave-convex structure 25 is one less than the convex portion of the third concave-convex structure 22. In other embodiments, the convex portion of the second concave-convex structure 25 can be one more than the convex portion of the third concave-convex structure 22. In some embodiments, the convex portions of the second concave-convex structure 25 can have 2, 3, 4, etc., and the convex portions of the third concave-convex structure 22 can have 2, 3, 4, etc.

[0066] See also Figure 2 In this embodiment, the support member 21 is a metal frame. The metal frame as the support member 21 mainly provides structural support and stability. In the sealing ring 2, the metal frame is wrapped inside by the sealing member 23. When the sealing ring 2 is subjected to external pressure or impact, the metal frame can effectively disperse and withstand these forces and protect the sealing member 23 from damage.

[0067] See also Figure 2 In this embodiment, the sealing member 23 is a rubber sealing ring 2. The rubber sealing ring 2 can be made of natural rubber, synthetic rubber or other elastic materials, and has good elasticity and sealing performance. Its main function is to use its own elasticity and deformation ability to form a sealing barrier between the installation port 13 and the end cover 3 or the stretch shell. When the coolant flows in the water channel 11, the rubber sealing ring 2 can effectively prevent the coolant from leaking from the installation port 13, ensuring the sealing performance of the water channel 11 system.

[0068] See also Figure 3 In this embodiment, the open chamfering treatment of the mounting port 13 is intended to reduce the sharpness of the edge of the mounting port 13 to make it smoother. Optionally, the groove mouth needs to be processed with a 15° to 20° guide angle and a rounded transition to facilitate installation guidance and prevent scratches on the sealing ring. Optionally, the Ra surface roughness of the chamfering treatment is 1.6. In the actual manufacturing process, the open part of the mounting port 13 can be chamfered by machining, grinding or other methods to remove burrs, and the mounting port 13 ensures a good finish. The edge of the mounting port 13 after treatment is not only smoother, but also can effectively prevent scratches or damage to the sealing ring 2 or the installer during installation or use. The small step at the bottom of the mounting port 13 can support the sealing ring to play an installation limit role.

[0069] Here, the installation method of the sealing ring 2 is described. First, grease is applied to the side wall of the installation opening 13 to assist lubrication, and then the sealing ring 2 is pressed into place using a tool. After installation, the protrusion (sealing lip) is squeezed by the side wall of the installation opening 13, and the protrusion fits tightly against the side wall of the installation opening 13 to play a sealing role.

[0070] This embodiment also provides a motor, including the water channel sealing structure of the motor tensile housing 1 as described in any one of the above embodiments, the structure of the water channel sealing structure is as follows: Figures 1 to 5 shown.

[0071] Furthermore, the motor comprises:

[0072] The motor stretching housing 1 is the main body 12 of the motor, which is usually made of metal or other high-strength materials and has sufficient structural strength and stability. A water channel 11 is designed inside to cool the heat generated by the motor during operation. In addition to the installation ports 13 at both ends of the water channel 11, there are two openings for the coolant to enter and exit. The two openings are connected by external pipes to transport the coolant.

[0073] End cover 3, which is another important component of the motor, usually covers both ends of the motor tensile housing 1 to protect the internal parts of the motor, such as preventing external impurities or moisture from entering the motor. At the same time, the end cover 3 also needs to cooperate closely with the water channel sealing structure to limit the sealing ring 2 to ensure the sealing performance;

[0074] A cavity is also provided in the motor stretching housing 1, and the stator, rotor, shaft, etc. of the motor are arranged in the cavity.

[0075] This application has the following technical effects:

[0076] 1. A design different from the existing sealing ring groove is adopted. There is no sealing ring groove, which eliminates the weakening of the shell structure by the sealing ring groove, and the shell wall thickness can be reduced accordingly. When designing the shell thickness, it is only necessary to consider the strength requirements of the whole machine and the force of the sealing ring 2, so as to achieve lightweight and reduce material costs, especially in low-power motors. Because the product performance is reduced, the required structural strength is reduced. This solution does not need to consider the depth of the reserved sealing ring groove and the minimum wall thickness required for welding, which has obvious advantages.

[0077] 2. Reduce processing steps and processing volume, improve processing efficiency. Shell processing does not require complicated processing steps and special equipment, and can be completed in one processing on a lathe or machining center.

[0078] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structural or equivalent process changes made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the utility model patent.

Claims

1. A water channel sealing structure for a motor tensile housing, wherein the water channel is provided with an opening for the coolant to enter and exit, characterized in that: The water channel passes through both ends of the motor stretching housing in the length direction and forms two installation openings. The part of the water channel between the two installation openings is the main part, and the width of the main part is smaller than the width of the installation opening. The water channel sealing structure includes two sealing rings, and the two sealing rings are respectively arranged in the two installation openings. The sealing ring includes a support member and a sealing member arranged from the inside to the outside, and the sealing member wraps the support member. The outer side wall of the sealing member is provided with a first concave-convex structure, and the first concave-convex structure is deformed by force after contacting the side walls on both sides of the installation opening to seal the installation opening.

2. The water channel sealing structure according to claim 1, characterized in that: The depth of the installation opening is greater than the thickness of the sealing ring.

3. The water channel sealing structure according to claim 2, characterized in that: The depth of the installation opening is set to A1, the thickness of the sealing ring is set to A2, and A2+0.1mm<A1<A2+0.5mm.

4. The water channel sealing structure according to claim 1, characterized in that: The first concave-convex structure is provided with at least two convex parts.

5. The water channel sealing structure according to claim 1, characterized in that: The inner side wall of the sealing member is provided with a second concave-convex structure, the outer side wall of the supporting member is provided with a third concave-convex structure, and the second concave-convex structure is plugged into the third concave-convex structure.

6. The water channel sealing structure according to claim 5, characterized in that: The support member is in an I-shape.

7. The water channel sealing structure according to claim 1, 5 or 6, characterized in that: The supporting member is a metal frame.

8. The water channel sealing structure according to claim 1, characterized in that: The opening of the installation opening is chamfered.

9. The water channel sealing structure according to claim 1, characterized in that: The sealing element is a rubber sealing ring.

10. A motor, characterized in that: A water channel sealing structure comprising a motor stretch housing as described in any one of claims 1 to 9.

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