Motor waterproof assembly and motor

Abstract

The utility model provides a motor waterproof assembly and a motor. The motor waterproof assembly comprises an end cover, a plastic package stator and an outgoing line sheath, wherein the end cover covers one end of the plastic package stator; the outgoing line sheath comprises a sealing ring, the sealing ring is arranged between the end cover and the plastic package stator, and the two ends of the sealing ring abut against the end cover and the plastic package stator in a sealed mode respectively. The outgoing line sheath comprises the sealing ring structure, the sealing ring is arranged between the end cover and the plastic package stator, the sealing and waterproof effects of the end cover and the plastic package stator are achieved, waterproof glue is prevented from being used, and therefore operation simplicity and convenience are improved, and protection is reliable.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric machines, and particularly relates to an electric machine waterproof assembly and an electric machine. BACKGROUND

[0002] Electric motors are widely used in modern society, involving industrial electrical appliances, household appliances, transportation, aerospace and many other fields, which leads to various environments for the use of electric machines. When electric machines are used in some harsh environments, the electric machines need to take some corresponding protective measures to improve the service life of the electric machines.

[0003] When the electric machine needs to meet higher waterproof requirements, the existing protection method is to coat waterproof glue to seal and achieve waterproof requirements at the places where the electric motor is easy to enter water, such as the junction of the wire outlet sheath and the end cover and the plastic encapsulated stator, and the junction surface of the plastic encapsulated stator and the end cover. This method is complex to operate and has poor reliability. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the application provides an electric machine waterproof assembly and an electric machine, which can solve the problem of complex operation and poor reliability of sealing and waterproofing by coating waterproof glue in the prior art.

[0005] In order to solve the above problems, the application provides an electric machine waterproof assembly, comprising:

[0006] An end cover, a plastic encapsulated stator and a wire outlet sheath, the end cover covers one end of the plastic encapsulated stator;

[0007] The wire outlet sheath comprises a sealing ring, the sealing ring is arranged between the end cover and the plastic encapsulated stator, and the two ends of the sealing ring are respectively sealed and abutted against the end cover and the plastic encapsulated stator.

[0008] In some embodiments,

[0009] The thickness of the sealing ring in the axial direction of the end cover is greater than the gap between the end cover and the plastic encapsulated stator.

[0010] In some embodiments,

[0011] An annular recess is arranged on the side wall of the end cover facing the plastic encapsulated stator, and the sealing ring is arranged in the recess.

[0012] In some embodiments,

[0013] An annular protrusion is arranged on one end of the plastic encapsulated stator facing the end cover, an end face of the protrusion abuts against the sealing ring, and an outer side wall of the recess is gap-fitted with an outer peripheral wall of the protrusion.

[0014] In some embodiments,

[0015] The inner wall of one end of the plastic-sealed stator towards the end cover is provided with a groove; the side wall of the sealing ring towards the inside of the plastic-sealed stator is provided with a protrusion which is matched and inserted into the groove.

[0016] In some embodiments,

[0017] The plastic-sealed stator is provided with an opening for leading wires, the wire-out sheath further comprises a blocking part which is in interference fit with the opening; the sealing ring is fixedly connected with the blocking part.

[0018] In some embodiments,

[0019] In the axial and radial directions of the plastic-sealed stator, the size of the blocking part is larger than that of the opening, and the size difference is 0.5-0.8mm.

[0020] In some embodiments,

[0021] The sealing ring and the blocking part are integrally arranged.

[0022] According to another aspect of the present application, there is provided an electric machine comprising the waterproof assembly of the electric machine as described above.

[0023] The waterproof assembly of the electric machine provided by the present application comprises an end cover, a plastic-sealed stator and a wire-out sheath, the end cover covers one end of the plastic-sealed stator; the wire-out sheath comprises a sealing ring, the sealing ring is arranged between the end cover and the plastic-sealed stator, and the two ends of the sealing ring are respectively sealed against the end cover and the plastic-sealed stator.

[0024] The present application has the following beneficial effects:

[0025] By means of the wire-out sheath comprising the sealing ring structure, the sealing ring is arranged between the end cover and the plastic-sealed stator to realize the sealing and waterproof effects of both, and the waterproof glue is avoided to improve the operation convenience and protection reliability. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. The drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0027] Figure 1 It is an explosion structure schematic diagram of the waterproof assembly of the electric machine of the embodiment of the present application;

[0028] Figure 2 It is an assembly structure schematic diagram of the waterproof assembly of the electric machine of the embodiment of the present application;

[0029] Figure 3 For the embodiment of the present application Figure 2 Partial enlarged view of the middle part;

[0030] Figure 4 Schematic view of the perspective structure of the outlet sheath for the embodiment of the present application;

[0031] Figure 5 Front view of the outlet sheath for the embodiment of the present application;

[0032] Figure 6 Side view of the outlet sheath for the embodiment of the present application;

[0033] Figure 7 Schematic view of the structure of the plastic-sealed stator for the embodiment of the present application;

[0034] Figure 8 Schematic view of the structure of the end cover for the embodiment of the present application.

[0035] The signs represent:

[0036] 1, end cover; 11, recess;

[0037] 2, plastic-sealed stator; 21, aperture; 22, groove; 23, protrusion;

[0038] 3, rotor assembly;

[0039] 4, outlet sheath; 41, sealing ring; 411, protrusion; 42, plugging part;

[0040] 5, rotating shaft. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative work, fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0044] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0045] For reference Figures 1 to 8 As shown, according to the embodiment of the present application, a motor waterproof assembly comprises:

[0046] The end cover 1, the plastic package stator 2 and the wire outlet sheath 4, the end cover 1 covers one end of the plastic package stator 2;

[0047] The wire outlet sheath 4 comprises a sealing ring 41, the sealing ring 41 is arranged between the end cover 1 and the plastic package stator 2, and the two ends of the sealing ring 41 are respectively sealed against the end cover 1 and the plastic package stator 2.

[0048] The present application contains a sealing ring 41 structure in the wire outlet sheath 4, the sealing ring 41 is arranged between the end cover 1 and the plastic package stator 2, realizing the sealing and waterproof effect of the two, avoiding the use of waterproof glue, thereby improving the operation convenience and protection reliability.

[0049] The traditional wire outlet sheath 4 only protects the wires drawn from the plastic-sealed stator 2. The wire outlet sheath 4 of the application has a sealing ring 41 structure, which uses the sealing ring 41 to seal the sealing surface between the end cover 1 and the plastic-sealed stator 2, thereby improving the waterproof performance between the two and avoiding the operation of applying waterproof glue. This sealing operation on the structure of the end cover 1 and the plastic-sealed stator 2 is reliable in protection performance.

[0050] The sealing ring 41 itself can be made of elastic materials such as silicone rubber and deforms under the extrusion of the end cover 1 and the plastic-sealed stator 2, thereby achieving good sealing effect.

[0051] In some embodiments,

[0052] The thickness of the sealing ring 41 in the axial direction of the end cover 1 is greater than the gap between the end cover 1 and the plastic-sealed stator 2.

[0053] In order to improve the sealing performance of the sealing ring 41, the sealing ring 41 with a thickness greater than the gap between the end cover 1 and the plastic-sealed stator 2 is used. In this way, the end cover 1 and the plastic-sealed stator 2 can extrude the sealing ring 41 when fixedly connected, thereby achieving tight sealing and improving waterproof performance.

[0054] In some embodiments,

[0055] The side wall of the end cover 1 facing the plastic-sealed stator 2 is provided with an annular recess 11, and the sealing ring 41 is arranged in the recess 11.

[0056] In order to facilitate installation and improve stability after installation, the annular recess 11 is arranged on the side wall of the end cover 1 facing the plastic-sealed stator 2 to accommodate the sealing ring 41. In this way, the sealing ring 41 of the wire outlet sheath 4 and the plastic-sealed stator 2 can be assembled together in advance, and then the end cover 1 is covered. Only the recess 11 on the end cover 1 needs to be aligned with the sealing ring 41 to complete positioning, which is simple to operate. The sealing ring 41 deforms in the recess 11 under the extrusion of the end cover 1 and the plastic-sealed stator 2 to fill the gap, thereby achieving waterproof sealing.

[0057] In some embodiments,

[0058] The end of the plastic-sealed stator 2 facing the end cover 1 is provided with an annular protrusion 23, and the end face of the protrusion 23 abuts against the sealing ring 41; the outer side wall of the recess 11 is in clearance fit with the outer peripheral wall of the protrusion 23.

[0059] The protrusion 23 is arranged on the end of the plastic-sealed stator 2 facing the end cover 1, and the position of the protrusion 23 corresponds to the recess 11 on the end cover 1. In this way, when the end cover 1 and the plastic-sealed stator 2 are assembled, the end face of the protrusion 23 abuts against the sealing ring 41, and the outer peripheral wall thereof is in clearance fit with the outer side wall of the recess 11. Therefore, misoperation does not occur during assembly, and the reliability of sealing assembly is improved.

[0060] The sealing ring 41 abuts the end surface of the annular protrusion 23 of the plastic-encapsulated stator 2. The seal is achieved by squeezing the sealing ring 41 when the end cap 1 is installed. The sealing ring 41 has an axial thickness of 0.2-0.25 mm and a radial width of 3-3.2 mm, ensuring that it can fill the gap between the end cap 1 and the plastic-encapsulated stator 2.

[0061] In some embodiments,

[0062] A groove 22 is provided on the inner wall of the plastic-encapsulated stator 2 at one end facing the end cover 1 ; a protrusion 411 is provided on the side wall of the sealing ring 41 facing the inside of the plastic-encapsulated stator 2 , and the protrusion 411 is matched and inserted into the groove 22 .

[0063] The inner wall of the plastic-encapsulated stator 2 facing the end cover 1 is generally provided with a groove 22 for making room for assembling other components. Therefore, this may cause leakage problems here. In this application, a protrusion 411 is provided on the side wall of the sealing ring 41 facing the plastic-encapsulated stator 2, which just matches the shape and size of the groove 22 to form a sealing structure and play a waterproof role.

[0064] The plastic-encapsulated stator 2 is provided with a plurality of grooves 22, and the corresponding sealing ring 41 is also provided with the same number of protrusions 411. The protrusions 411 are completely consistent in structure with the grooves 22 of the plastic-encapsulated stator 2. In this way, when the sealing ring 41 is placed at the end of the plastic-encapsulated stator 2, the protrusions 411 of the sealing ring 41 can completely overlap with the grooves 22, forming a completely sealed structure and achieving a waterproof effect.

[0065] In some embodiments,

[0066] The plastic-encapsulated stator 2 is provided with a notch 21 for leading out the wires. The lead-out sheath 4 further includes a blocking portion 42 . The blocking portion 42 and the notch 21 are interference fit. The sealing ring 41 is fixedly connected to the blocking portion 42 .

[0067] The side wall of the plastic-encapsulated stator 2 is usually provided with a notch 21 for leading out the wires, which is also prone to water ingress. Therefore, the present application further provides the lead-out sheath 4 with a blocking portion 42 to block the notch 21, forming a sealing structure and achieving a waterproof effect.

[0068] The shape of the sealing portion 42 is completely consistent with the notch 21, which improves the sealing performance.

[0069] The sealing ring 41 and the sealing portion 42 are respectively provided to seal the parts of the motor that are prone to leakage, and the two can be fixedly connected. Since the sealing ring 41 and the sealing portion 42 are located adjacent to each other, one end of the sealing ring 41 can be connected to the sealing portion 42. Since both can be made of banana material, they can be connected by adhesive.

[0070] In some embodiments,

[0071] In the axial and radial directions of the plastic-sealed stator 2, the size of the sealing part 42 is larger than the size of the gap 21, and the size difference is 0.5-0.8 mm.

[0072] The axial height and the radial width of the sealing part 42 at the joint of the wire outlet sheath 4 and the gap 21 of the plastic-sealed stator 2 are 0.5-0.8 mm larger than the size of the gap 21 of the plastic-sealed stator 2. The joint between the two is designed as an interference fit, which ensures that the two form a completely sealed structure after being fitted, thereby achieving the waterproof effect.

[0073] The axial height refers to the length in the axial direction of the plastic-sealed stator 2, and the radial width refers to the length in the radial direction of the plastic-sealed stator 2.

[0074] In some embodiments,

[0075] The sealing ring 41 and the sealing part 42 are integrally arranged.

[0076] The sealing ring 41 and the sealing part 42 can be integrally formed, so that the mold can be used to complete the structure of the two being integrated, thereby improving the structural accuracy and stability of the assembly operation.

[0077] According to another aspect of the present application, a motor is provided, which comprises the motor waterproof assembly as described above.

[0078] The existing motor waterproof method is to use a flowable silicone to fill the gaps between components to achieve the sealing and waterproof effect, such as the plastic-sealed stator 2 and the end cover 1, and the plastic-sealed stator 2 and the wire outlet sheath 4. This waterproof method has many disadvantages. On the one hand, the glue has strong flowability, and the operation is difficult, which leads to high labor intensity of employees and low production efficiency. On the other hand, the consistency of the manual operation process is poor, and the motor product has safety hazards.

[0079] The motor of the present application uses the above-mentioned motor waterproof assembly, which is a new type of waterproof method. The integrated wire outlet sheath 4 is used to achieve better sealing effect instead of glue to fill the gaps between components.

[0080] The material of the wire outlet sheath 4 is a silicone rubber elastic material. The annular sealing ring 41 of the wire outlet sheath 4 coincides with the edge of the annular surface of the plastic-sealed stator 2, and the protrusion 411 of the sealing ring 41 towards the plastic-sealed stator 2 completely coincides with the groove 22 of the plastic-sealed stator 2. When the plastic-sealed stator 2 is combined with the end cover 1, an extrusion force is generated, and the wire outlet sheath 4 deforms under the pressure to fill the gaps between the plastic-sealed stator 2 and the end cover 1, and between the plastic-sealed stator 2 and the wire outlet sheath 4, thereby achieving complete sealing.

[0081] The assembling process of the motor of the present application is as follows:

[0082] Step 1: Put the rotor assembly 3 containing the rotating shaft 5 into the plastic-sealed stator 2.

[0083] Step 2: Assemble the integrated wire outlet sheath 4 with the aperture 21 of the plastic-sealed stator 2, and the annular sealing ring 41 of the wire outlet sheath 4 is partially coincident with the edge of the annular surface of the plastic-sealed stator 2, and the protrusion 411 of the sealing ring 41 is completely coincident with the groove 22 of the plastic-sealed stator 2.

[0084] Step 3: Put the end cover 1 on the other side of the sealing ring 41.

[0085] Step 4: Fasten the end cover 1 with the plastic-sealed stator 2 by using the pressure equipment, and the wire outlet sheath 4 is deformed to achieve the sealing effect. It is easy for those skilled in the art to understand that the above-mentioned embodiments can be freely combined and superimposed without conflict.

[0086] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above only describes the preferred embodiments of the present application and it should be pointed out that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications shall be considered as the protection scope of the present application.

Claims

1. An electric motor waterproofing assembly, characterized by, The waterproof assembly of the electric machine comprises an end cover (1), a plastic-sealed stator (2) and a wire outlet sheath (4), wherein the end cover (1) covers one end of the plastic-sealed stator (2); the wire outlet sheath (4) comprises a sealing ring (41) arranged between the end cover (1) and the plastic-sealed stator (2), and two ends of the sealing ring (41) are respectively sealed against the end cover (1) and the plastic-sealed stator (2).

2. The waterproof assembly of the electric machine according to claim 1, wherein the thickness of the sealing ring (41) in the axial direction of the end cover (1) is greater than the gap between the end cover (1) and the plastic-sealed stator (2).

3. The waterproof assembly of the electric machine according to claim 2, wherein a ring-shaped recess (11) is arranged on the side wall of the end cover (1) facing the plastic-sealed stator (2), and the sealing ring (41) is arranged in the recess (11).

4. The waterproof assembly of the electric machine according to claim 3, wherein a ring-shaped protrusion (23) is arranged on the end of the plastic-sealed stator (2) facing the end cover (1), the end face of the protrusion (23) abuts against the sealing ring (41), and the outer side wall of the recess (11) is in clearance fit with the outer peripheral wall of the protrusion (23).

5. The waterproof assembly of the electric machine according to claim 4, wherein a groove (22) is arranged on the inner wall of the end of the plastic-sealed stator (2) facing the end cover (1), and a protrusion (411) is arranged on the side wall of the sealing ring (41) facing the inside of the plastic-sealed stator (2), and the protrusion (411) is matched and inserted into the groove (22).

6. The waterproof assembly of the electric machine according to any one of claims 1-5, wherein an aperture (21) for leading out a wire is arranged on the plastic-sealed stator (2), the wire outlet sheath (4) further comprises a blocking part (42), the blocking part (42) is in interference fit with the aperture (21), and the sealing ring (41) is fixedly connected with the blocking part (42).

7. The waterproof assembly of the electric machine according to claim 6, wherein in the axial and radial directions of the plastic-sealed stator (2), the size of the blocking part (42) is greater than the size of the aperture (21), and the size difference is 0.5-0.8 mm.

8. The waterproof assembly of the electric machine according to claim 6, wherein the sealing ring (41) and the blocking part (42) are integrally arranged. The waterproof assembly of the electric machine according to any one of claims 1-8. ​ ​ ​ ​ ​ ​ ​ ​ 9. An electric machine characterized by ​

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