Motor end cover waterproof structure and motor

Abstract

The invention provides a motor end cover waterproof structure and a motor, and the motor end cover waterproof structure comprises a housing, the two ends of the housing are provided with end covers, the end covers are provided with first grooves, the first grooves are internally provided with water retaining rings, the water retaining rings are provided with sixth grooves, the sixth grooves are internally provided with waterproof rings, and the waterproof rings are arranged in the sixth grooves. And the end part of the shell is inserted into the waterproof ring. According to the motor end cover, the technical problem that a motor end cover in the prior art adopts a single sealing ring for waterproofing, and the waterproof performance is poor can be solved.

Description

Technical Field

[0001] This invention belongs to the field of motor technology, specifically relating to a waterproof structure for a motor end cover and a motor. Background Technology

[0002] In motor applications, especially for motors used outdoors or in humid environments, the sealing and waterproofing performance of the end cap directly affects the motor's service life and operational stability. Current technologies typically employ a single sealing ring or a simple water-blocking structure for waterproofing, which is insufficient to effectively address seal failure caused by water pressure impacts, prolonged immersion, or changes in ambient temperature. Furthermore, existing structures lack an effective multi-stage compression design during seal ring installation, leading to unstable sealing performance and a tendency for leakage. Therefore, there is an urgent need for a motor end cap sealing and waterproofing structure that is structurally sound, provides stable sealing performance, and is easy to install.

[0003] Because existing motor end caps use a single sealing ring for waterproofing, which has poor waterproofing performance, this invention researches and designs a waterproof structure for motor end caps and a motor. Summary of the Invention

[0004] Therefore, the present invention provides a waterproof structure for a motor end cover and a motor, which can solve the technical problem that the existing motor end cover uses a single sealing ring for waterproofing, resulting in poor waterproof performance.

[0005] To address the aforementioned problems, this invention provides a waterproof end cover structure for a motor, comprising: a housing, with end covers at both ends of the housing, a first groove on each end cover, a water-blocking ring within the first groove, a sixth groove on the water-blocking ring, and a waterproof ring within the sixth groove, wherein the end of the housing is inserted into the waterproof ring.

[0006] In some embodiments, the bottom of the first groove is provided with a plurality of second grooves, and a sealing ring is provided in the second groove.

[0007] In some embodiments, a plurality of the second grooves are arranged at intervals along the radial direction of the end cap.

[0008] In some embodiments, the bottom of the second groove is provided with a plurality of protrusions, which are arranged sequentially along the radial direction of the end cap. The sealing ring is provided with a plurality of third grooves on the side facing the bottom of the second groove, and the third grooves are arranged in a one-to-one correspondence with the protrusions.

[0009] In some embodiments, the sealing ring has a plurality of second protrusions at one end facing the waterproof ring, the plurality of second protrusions being arranged sequentially along the radial direction of the end cap, and the water-blocking ring has a plurality of fourth grooves at one end facing the sealing ring, the fourth grooves being arranged in a one-to-one correspondence with the second protrusions.

[0010] In some embodiments, the opening of the sixth groove gradually decreases along the direction from the bottom of the sixth groove to the opening.

[0011] In some embodiments, the end of the water-retaining ring facing away from the end cap has an extension that extends radially outward from the housing. The extension is located radially outward from the housing and extends axially from the housing. One end of the extension abuts against the outer wall of the housing.

[0012] In some embodiments, the extension is provided with a fifth groove that extends circumferentially along the extension and has a through hole.

[0013] In some embodiments, a seventh groove is provided at the end of the waterproof ring facing away from the water-blocking ring, and the opening of the sixth groove gradually decreases along the direction from the bottom of the seventh groove to the opening, and the end of the shell is inserted into the seventh groove.

[0014] In some embodiments, the sidewall of the seventh groove is provided with a plurality of fifth grooves, the plurality of fifth grooves are arranged at intervals along the axial direction of the housing, and the outer peripheral wall of the housing is provided with a third protrusion, the third protrusion being arranged in a one-to-one correspondence with the fifth groove.

[0015] The present invention also provides an electric motor, which includes the aforementioned waterproof structure for the motor end cover.

[0016] The present invention provides a waterproof end cover structure for a motor, and the motor has the following beneficial effects: By setting up a water-blocking ring and a waterproof ring, a double sealing structure is formed between the end cover and the housing, which enables the motor end cover to maintain good sealing performance under different directions and pressure conditions. This effectively prevents water from seeping into the motor, thereby improving the motor's protection level and extending its service life. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is the assembly structure of the waterproof motor end cover structure of the present invention. Figure 1 ; Figure 2 This is the assembly structure of the waterproof motor end cover structure of the present invention. Figure 2 ; Figure 3 yes Figure 2 Enlarged view of section H in the middle; Figure 4 This is a schematic diagram of the end cover structure in the waterproof structure of the motor end cover of the present invention; Figure 5 yes Figure 4 Enlarged view of point G in the middle; Figure 6 This is a schematic diagram of the waterproof ring in the waterproof structure of the motor end cover of the present invention; Figure 7 yes Figure 6 Enlarged view at point F; Figure 8 This is a schematic diagram of the water-retaining ring in the waterproof structure of the motor end cover of the present invention; Figure 9 yes Figure 8 Enlarged view of point E in the middle.

[0019] The attached figures are labeled as follows: 1. Shell; 2. End cap; 3. Bolt; 4. Sealing ring; 5. Water-retaining ring; 6. Waterproof ring; 7. Through hole; 8. Third groove; 9. Fourth groove; 10. First groove; 11. Second groove; 12. Fifth groove; 13. Fifth groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0022] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0023] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0024] See also Figure 1-9 As shown in the figure, according to an embodiment of the present invention, a waterproof structure for a motor end cover is provided, comprising: a housing 1, with end covers 2 at both ends of the housing 1, a first groove 10 on the end cover 2, a water-blocking ring 5 disposed within the first groove 10, a sixth groove on the water-blocking ring 5, and a waterproof ring 6 disposed within the sixth groove, the end of the housing 1 being inserted into the waterproof ring 6. In this technical solution, by setting the water-blocking ring 5 and the waterproof ring 6, a double sealing structure is formed between the end cover 2 and the housing 1, enabling the motor end cover to maintain good sealing performance under different directions and pressure conditions, effectively preventing water from seeping into the motor, thereby achieving the technical effects of improving the motor's protection level and extending its service life.

[0025] It should be noted that both the first groove 10 and the sixth groove are annular and match the end of the housing 1, thereby providing an all-round seal for the housing 1.

[0026] In some embodiments, the bottom of the first groove 10 is provided with a plurality of second grooves 11, and a sealing ring 4 is provided in the second groove 11.

[0027] In this technical solution, the second groove 11 is annular. By setting a sealing ring in the second groove 11, water is blocked between the water-blocking ring 5 and the end cover 2, further ensuring the sealing effect between the end cover 2 and the shell.

[0028] In some embodiments, a plurality of the second grooves 11 are arranged at intervals along the radial direction of the end cap 2.

[0029] In this technical solution, multiple second grooves 11 are arranged at intervals to form a multi-seal structure between the water-blocking ring 5 and the end cover 2 in the radial direction of the end cover 2, which is used for waterproofing between the water-blocking ring and the end cover.

[0030] In some embodiments, bolts 3 are provided on the end cap 2. The bolts 3 penetrate the end cap 2 and extend into the housing 2 to fix the end cap 2. Of course, the bolts 3 can also be used to connect the end caps 2 at both ends of the housing 1 to fix the end cap 2. In the radial outward direction of the end cap 2, the bolts 3 are located radially inside the second groove 11 and the first groove 10 to prevent the bolts 3 from affecting the sealing structure of the end cap 2. When the end cap 2 is fixed by the bolts 3, the end cap 2 will squeeze the sealing ring 4, the water-blocking ring 5 and the waterproof ring 6 under the action of the bolts 3, thereby ensuring the sealing effect of the sealing ring 4, the water-blocking ring 5 and the waterproof ring 6.

[0031] In some embodiments, the bottom of the second groove 11 is provided with a plurality of protrusions 8, which are arranged sequentially along the radial direction of the end cap 2. The sealing ring 4 is provided with a plurality of third grooves on the side facing the bottom of the second groove 11, and the third grooves are arranged in a one-to-one correspondence with the protrusions 8.

[0032] In this technical solution, the radial section of the housing 1 is used as the projection plane. The third groove and the protrusion 8 are both annular. Through the third groove and the protrusion 8, multiple seals are formed between the sealing ring 4 and the bottom of the second groove 11, which can also ensure the stable assembly between the sealing ring 4 and the second groove 11.

[0033] In some embodiments, the protrusion 8 is formed in any of the following structures: a sawtooth structure, a trapezoidal structure, or a wavy structure. The structure of the third groove matches the protrusion 8, thereby ensuring the assembly between the third groove and the protrusion 8.

[0034] In some embodiments, the sidewall of the second groove 11 has a threaded structure, thereby better ensuring the assembly between the second groove 11 and the sealing ring 4.

[0035] In the waterproof structure of the motor end cover of this invention, a second groove 11 is provided on the inner outer edge of the end cover 2. The sidewall of the second groove 11 is threaded, and multiple unevenly distributed serrated protrusions are distributed on the bottom of the second groove 11 for staggered engagement with the serrated protrusions of the water-blocking ring 5. The sealing ring 4 is a spiral rubber component with a square cross-section. Before installation, it is placed in the spiral second groove 11 of the end cover to provide waterproofing between the water-blocking ring 5 and the end cover 2. The unevenly distributed serrated protrusions of the end cover 2 and the unevenly distributed serrated protrusions of the water-blocking ring 5 cooperate to compress the square spiral sealing ring 4, providing reliable waterproofing.

[0036] In some embodiments, the sealing ring 4 has a plurality of second protrusions at one end facing the waterproof ring 5, and the plurality of second protrusions are arranged sequentially along the radial direction of the end cap 2. The water-blocking ring 5 has a plurality of fourth grooves 9 at one end facing the sealing ring 4, and the fourth grooves 9 are arranged in a one-to-one correspondence with the second protrusions.

[0037] In this technical solution, the radial section of the housing 1 is used as the projection plane. The fourth groove 9 and the second protrusion are both annular. Through the fourth groove 9 and the second protrusion, multiple seals are formed between the sealing ring 4 and the water-blocking ring 5, which can also ensure the stable assembly between the sealing ring 4 and the water-blocking ring 5.

[0038] In some embodiments, the sidewall of the first groove 10 has a threaded structure, thereby better ensuring the assembly between the first groove 10 and the water-blocking ring 5.

[0039] In some embodiments, the second protrusion is formed in any of the following structures: a serrated structure, a trapezoidal structure, or a wavy structure. The structure of the fourth groove 9 matches the second protrusion, thereby ensuring the assembly between the water-blocking ring 5 and the sealing ring 4.

[0040] In the waterproof structure of the motor end cover of the present invention, a protrusion is formed between two adjacent fourth grooves 9. The water-blocking ring 5 is made of high-density polypropylene or other similar hard materials. Its outer edge is provided with a spiral protrusion that cooperates with the spiral first groove 10 of the end cover. The top is provided with multiple unevenly distributed serrated protrusions, which are staggered from the serrated protrusions at the bottom of the second groove 11. This is used for multi-segment compression sealing ring 4 to improve the sealing effect.

[0041] In some embodiments, the opening of the sixth groove gradually decreases along the direction from the bottom of the sixth groove to the opening.

[0042] In this technical solution, the opening of the sixth groove gradually decreases, that is, the water-blocking ring 5 has a sixth groove on the other side of the sealing ring 4, which can be installed in conjunction with the waterproof ring 6. The inner wall of the water-blocking ring 5 has an inwardly pressing inclined platform. During installation, the inclined platform presses the soft waterproof ring 6, which improves the reliability of waterproofing.

[0043] In some embodiments, the water-retaining ring 5 has an extension at one end facing away from the end cap 2, extending radially outward from the housing 1. The extension is located radially outward from the housing 1, extends axially from the housing 1, and one end of the extension abuts against the outer wall of the housing 1.

[0044] In this technical solution, the extension partially covers the outer wall of the shell 1 to block the impact of external water flow. It should be noted that the extension is equivalent to the outer edge of the water-blocking ring having an annular water-blocking skirt that gradually tightens inward. That is to say, the inner diameter of the end of the extension that connects to the water-blocking ring 5 is larger than the inner diameter of the end of the extension that abuts against the shell 1, so that the extension forms a frustum-shaped structure with a gradually decreasing inner diameter.

[0045] In some embodiments, the extension is provided with a fifth groove 13, which extends circumferentially along the extension and has a through hole 7.

[0046] In this technical solution, the waterproof structure of the motor end cover of the present invention is applied to a horizontal motor. The water flow is guided by the fifth groove 13. The through hole 7 is located below the motor, that is, a row of conical drainage through holes 7 is provided within a 90° range on the lower side of the water-blocking skirt to drain the water that has entered the water-blocking ring 5.

[0047] In some embodiments, the waterproof ring 6 has a seventh groove at the end facing away from the water-blocking ring 5, and the opening of the sixth groove gradually decreases along the direction from the bottom of the seventh groove to the opening, and the end of the housing 1 is inserted into the seventh groove.

[0048] In this technical solution, the waterproof ring 6 has a Z-shaped ring structure, is made of soft and deformable material, and is fitted onto the port of the motor housing 1 to clamp the end of the housing 1.

[0049] In some embodiments, the sidewall of the seventh groove is provided with a plurality of fifth grooves 13, the plurality of fifth grooves 13 being arranged at intervals along the axial direction of the housing 1, and the outer peripheral wall of the housing 1 being provided with a third protrusion, the third protrusion being arranged in a one-to-one correspondence with the fifth grooves 13.

[0050] In this technical solution, the third protrusion can be triangular, and a groove is formed between two adjacent third protrusions. Corresponding to the protrusion formed between two adjacent fifth grooves 13, a triangular annular boss is provided on the inner side of the seventh groove, which can be installed in conjunction with the triangular groove on the outer side of the shell 1 to provide auxiliary sealing and fixing functions. During installation, it is squeezed by the inclined platform of the water-blocking ring groove, so the fixing is reliable.

[0051] In the installation process of the waterproof structure of the motor end cover of the present invention, the square spiral sealing ring 4 is first embedded into the spiral second groove 11 of the end cover 2, and then the water-blocking ring 5 is installed. The spiral boss of the water-blocking ring 5 cooperates with the spiral first groove 10 of the end cover 2. The serrated boss at the top is staggered with the serrated boss at the bottom of the groove of the end cover 2, thereby realizing multi-stage compression sealing of the sealing ring. The waterproof ring 6 is pre-installed on both sides of the housing 1. The multiple serrated bosses on the inner wall of the waterproof ring 6 cooperate with the serrated bosses of the end cover 2. During installation, the end cover 2 and the water-blocking ring assembly are connected and fixed to both ends of the housing 1 by bolts 3. The end cover 2 at both ends of the motor is squeezed inward by the action of the bolts 3, which at the same time drives the waterproof ring 6 and the water-blocking ring 5 to be squeezed inward, thus simultaneously completing the double sealing effect of the sealing ring 4 between the end cover 2 and the water-blocking ring 5, and between the waterproof ring 6 and the housing 1. The end cover 2 and the waterproof structure assembly are installed simultaneously, and the annular water-blocking skirt of the water-blocking ring 6 provides water blocking and diversion functions on the outside.

[0052] In some embodiments, the serrated boss at the top of the water-retaining ring 5 can be replaced with a trapezoidal or wavy boss to accommodate the deformation characteristics of different sealing ring materials. Simultaneously, anti-splash ribs can be added to the inner side of the water-retaining skirt to enhance the interception of water droplets. Furthermore, the zigzag structure of the waterproof ring 5 can be replaced with an L-shaped or U-shaped structure, and multiple annular sealing lips can be provided on the inner side to improve its sealing performance.

[0053] The waterproof structure of the motor end cover of this invention solves the technical problems of unstable sealing performance, easy leakage, and inconvenient installation of motor end covers under complex environmental conditions. By setting up a multi-layered sealing structure consisting of a water-blocking ring, a waterproof ring, and a sealing ring, the motor end cover maintains good sealing performance under different directions and pressure conditions, effectively preventing water from seeping into the motor, thus improving the motor's protection level and extending its service life. The spiral groove on the inner edge of the end cover ensures uniform pressure on the sealing ring during installation, improving the sealing ring's fit and sealing effect, thus enhancing overall sealing performance. The serrated protrusions on the top of the water-blocking ring are staggered with those on the bottom of the spiral groove of the end cover, achieving multi-stage compression of the sealing ring, enhancing its deformation adaptability, and improving sealing stability. The annular water-blocking skirt and water-guiding groove on the outer edge of the water-blocking ring block most of the impact water flow and guide its direction, effectively reducing the direct impact of external water flow on the sealing structure, thus improving waterproof performance. The tapered drainage holes on the underside of the water-retaining skirt allow water that has entered the water-retaining ring to be drained in a timely manner, preventing corrosion or failure of the sealing structure caused by water accumulation and thus improving long-term reliability.

[0054] The present invention also provides an electric motor, including the above-described waterproof end cover structure.

[0055] It should be noted that the motor of the present invention is preferably a horizontal motor.

[0056] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A waterproof structure for a motor end cover, characterized in that: include: The housing (1) has end caps (2) at both ends. The end caps (2) have a first groove (10) and a water-blocking ring (5) in the first groove (10). The water-blocking ring (5) has a sixth groove and a waterproof ring (6) in the sixth groove. The end of the housing (1) is inserted into the waterproof ring (6).

2. The waterproof structure for the motor end cover according to claim 1, characterized in that: The bottom of the first groove (10) is provided with a plurality of second grooves (11), and a sealing ring (4) is provided in the second groove (11).

3. The waterproof structure for the motor end cover according to claim 2, characterized in that: Along the radial direction of the end cap (2), a plurality of second grooves (11) are arranged at intervals.

4. The waterproof structure for the motor end cover according to claim 2, characterized in that: The bottom of the second groove (11) is provided with a plurality of protrusions (8), and the plurality of protrusions (8) are arranged in sequence along the radial direction of the end cap (2). The sealing ring (4) is provided with a plurality of third grooves on the side facing the bottom of the second groove (11), and the third grooves are arranged in a one-to-one correspondence with the protrusions (8).

5. The waterproof structure for the motor end cover according to claim 2, characterized in that: The sealing ring (4) has a plurality of second protrusions at one end facing the waterproof ring (5), and the plurality of second protrusions are arranged in sequence along the radial direction of the end cap (2). The water-blocking ring (5) has a plurality of fourth grooves (9) at one end facing the sealing ring (4), and the fourth grooves (9) are arranged in a one-to-one correspondence with the second protrusions.

6. The waterproof structure for the motor end cover according to claim 1, characterized in that: Along the direction from the bottom of the sixth groove to its opening, the opening of the sixth groove gradually decreases.

7. The waterproof structure for the motor end cover according to claim 1, characterized in that, The water-blocking ring (5) has an extension at one end facing away from the end cap (2). The extension is located on the radially outward side of the housing (1) and extends axially along the housing (1). One end of the extension abuts against the outer wall of the housing (1).

8. The waterproof structure for the motor end cover according to claim 7, characterized in that, The extension is provided with a fifth groove (13), which extends circumferentially along the extension and has a through hole (7).

9. The waterproof structure for the motor end cover according to claim 1, characterized in that, The waterproof ring (6) has a seventh groove at one end facing away from the water-blocking ring (5). Along the direction from the bottom of the seventh groove to the opening, the opening of the sixth groove gradually decreases. The end of the shell (1) is inserted into the seventh groove.

10. The waterproof structure for the motor end cover according to claim 9, characterized in that, The sidewall of the seventh groove is provided with a plurality of fifth grooves (13), the plurality of fifth grooves (13) are arranged at intervals along the axial direction of the housing (1), and the outer peripheral wall of the housing (1) is provided with a third protrusion, the third protrusion being arranged in a one-to-one correspondence with the fifth grooves (13).

11. An electric motor, characterized in that, The motor end cover waterproof structure includes any one of claims 1 to 10.

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