High-sealing-performance end cover of motor

Abstract

The utility model discloses a motor end cover with high sealing performance, which comprises an end cover body, the outer edge of the end cover body is bent outwards to form a flange plate, the outer edge of the flange plate is bent inwards to form a sealing ring, and a plurality of connecting holes are uniformly formed in the flange plate along the circumferential direction. A first sealing ring and a second sealing ring are sequentially embedded in the inner wall, close to the inner side of the connecting hole, of the flange plate, a third sealing ring is embedded in the inner circumferential side wall of the sealing ring, a movable ring is connected to the end cover body in a threaded mode, the outer edge of the movable ring is bent outwards to form a protruding edge disc, and the outer edge of the protruding edge disc is connected with a pressing ring. The flange plate and the sealing ring are arranged on two sealing faces in different directions, sealing performance is improved, when the movable ring is screwed, the pressing ring is driven to press the periphery of the sealing ring, the sealing effect of the pressing ring in the circumferential direction is improved, the protruding edge disc is driven to be tightly attached to the outer side of the flange plate, and sealing performance is improved. Therefore, the bolt installed in the connecting hole can be protected.

Description

Technical Field

[0001] This utility model relates to the field of electric motor technology, and in particular to a high-sealing end cap for electric motors. Background Technology

[0002] The motor end cap is an important component of the motor, usually located at both ends, serving to fix, support, and protect internal components. Currently, the motor end cap is mainly connected to the motor housing via a flange. The connection is a single surface, relying solely on O-rings or flat gaskets for sealing. This sealing is insufficient and prone to failure due to aging or assembly errors, leading to problems such as moisture or oil mist seeping into the motor.

[0003] To address this issue, we propose a high-sealing end cap for electric motors. Utility Model Content

[0004] The purpose of this invention is to provide a high-sealing end cap for electric motors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-sealing end cover for an electric motor includes an end cover body. The outer edge of the end cover body is bent outward to form a flange, and the outer edge of the flange is bent inward to form a sealing ring. A plurality of connecting holes are evenly opened along the circumference of the flange. A sealing ring 1 and a sealing ring 2 are sequentially embedded on the inner wall of the flange near the inner side of the connecting holes. A sealing ring 3 is embedded on the inner circumferential side wall of the sealing ring. A movable ring is externally threaded onto the end cover body. The outer edge of the movable ring is bent outward to form a raised flange, and a pressure ring is connected to the outer edge of the raised flange. When the movable ring is screwed into the flange, it drives the pressure ring to press against the outer side of the sealing ring and also drives the raised flange to press tightly against the outer side of the flange.

[0007] In a further embodiment, the outer corner of the sealing ring near the pressure ring is provided with a plurality of inclined guide grooves evenly distributed circumferentially, and the inner circumferential sidewall of the pressure ring is provided with a plurality of inclined guide blocks evenly distributed circumferentially, the guide blocks corresponding one-to-one with the guide grooves.

[0008] In a further embodiment, the outer end face of the sealing ring is provided with a plurality of expansion joints evenly distributed circumferentially, and the expansion joints and guide grooves are alternately distributed at intervals.

[0009] In a further embodiment, the pressure ring and the flanged disc are rotatably connected.

[0010] In a further embodiment, a sealing ring is embedded in the inner wall of the convex flange.

[0011] In a further embodiment, the connecting hole consists of coaxially distributed primary holes and secondary holes. The primary holes are close to the outer wall of the flange, and the inner diameter of the primary holes is larger than the inner diameter of the secondary holes to form a stepped hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention achieves sealing by setting sealing ring one and sealing ring two on the flange surface, while sealing ring three seals on the sealing ring surface. The flange and sealing ring are located on two sealing surfaces in different directions, thereby improving the sealing performance. Furthermore, when the movable ring is tightened, it not only drives the pressure ring to press against the outer periphery of the sealing ring, improving the circumferential sealing effect of the pressure ring, but also drives the raised flange to press tightly against the outer side of the flange, thus protecting the bolts installed in the connection hole, reducing their erosion from the external environment, and extending their service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the inner structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the outer structure of this utility model;

[0016] Figure 3 This is a side view cross-sectional structural diagram of the present invention;

[0017] Figure 4 This is a partial cross-sectional structural diagram of the pressure ring of this utility model when it is fastened to the outside of the sealing ring.

[0018] In the diagram: 1. End cap body; 2. Flange; 3. Sealing ring; 31. Guide groove; 32. Expansion joint; 4. Connection hole; 41. Primary hole; 42. Secondary hole; 5. Sealing ring one; 6. Sealing ring two; 7. Sealing ring three; 8. Movable ring; 9. Raised flange; 10. Pressure ring; 11. Guide block; 12. Sealing ring four. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A high-sealing end cover for an electric motor includes an end cover body 1, which serves as the rear end cover of the electric motor. The outer edge of the end cover body 1 is bent outwards to form a flange 2, and the outer edge of the flange 2 is bent inwards to form a sealing ring 3. The sealing ring 3 is coaxial with the end cover body 1. A plurality of connecting holes 4 are evenly distributed circumferentially on the flange 2. Specifically, the connecting holes 4 consist of coaxially distributed primary holes 41 and secondary holes 42. The primary holes 41 are close to the outer wall of the flange 2, and their inner diameter is larger than that of the secondary holes 42 to form a stepped hole, facilitating bolt insertion. When the nut is installed, it can be inserted into the first-stage hole 41 to prevent it from protruding from the outer wall of the flange 2 during installation. The inner wall of the flange 2 is inlaid with sealing ring 1 5 and sealing ring 2 6 from the outside to the inside. Sealing ring 1 5 and sealing ring 2 6 are coaxial with the end cover body 1, and sealing ring 1 5 and sealing ring 2 6 are both located in the inner area of ​​the connection hole 4, so that the sealing effect of sealing ring 1 5 and sealing ring 2 6 will not be damaged when the bolt is connected. Sealing ring 3 7 is inlaid on the inner circumferential side wall of sealing ring 3. After the end cover body 1 is installed with the motor housing, sealing ring 3 is just fastened to the outer edge of the flange of the motor housing.

[0023] To improve the sealing performance of the sealing ring 3, a movable ring 8 is screwed onto the external thread of the end cover body 1. The outer edge of the movable ring 8 is bent outward to form a raised flange 9, which is parallel to the flange 2. A pressure ring 10 is connected to the outer edge of the raised flange 9. When the movable ring 8 is screwed into the flange 2, it causes the pressure ring 10 to press against the outer periphery of the sealing ring 3, improving the circumferential sealing effect of the pressure ring 10. It also causes the raised flange 9 to fit tightly against the outer side of the flange 2, thereby protecting the bolts installed in the connection hole 4.

[0024] Furthermore, the outer corner of the sealing ring 3 near the pressure ring 10 is provided with several inclined guide grooves 31 evenly along the circumference, and the inner circumferential sidewall of the pressure ring 10 is provided with several inclined guide blocks 11 evenly along the circumference. The guide blocks 11 correspond one-to-one with the guide grooves 31. As the movable ring 8 rotates forward, the pressure ring 10 drives the guide blocks 11 to press against the guide grooves 31. The inclined surface action causes the pressure ring 10 to control the sealing ring 3 to gradually close, thereby pressing the sealing ring 7. Correspondingly, several expansion joints 32 are evenly provided on the outer end face of the sealing ring 3 along the circumference. The expansion joints 32 and the guide grooves The 31 are alternately distributed, and the expansion joint 32 allows the sealing ring 3 to deform and shrink. Specifically, the expansion joint 32 leaves a gap between itself and the sealing ring 7 in the axial direction to avoid affecting the sealing effect of the sealing ring 7. The pressure ring 10 and the flange 9 are rotatably connected to prevent circumferential deflection and friction between the pressure ring 10 and the sealing ring 3 when the movable ring 8 is rotated. The inner wall of the flange 9 is inlaid with a sealing ring 12. When the movable ring 8 is tightened, the sealing ring 12 is pressed between the flange 9 and the flange 2 to improve the sealing performance and protection effect.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-sealing end cap for an electric motor, comprising an end cap body (1), characterized in that: The outer edge of the end cap body (1) is bent outward to form a flange (2), and the outer edge of the flange (2) is bent inward to form a sealing ring (3). Several connecting holes (4) are evenly opened along the circumference of the flange (2), and a sealing ring one (5) and a sealing ring two (6) are sequentially embedded on the inner wall of the flange (2) near the inner side of the connecting holes (4). A sealing ring three (7) is embedded on the inner circumferential side wall of the sealing ring (3). The end cap body (1) is threaded with a movable ring (8), and the outer edge of the movable ring (8) is bent outward to form a raised edge plate (9). The outer edge of the raised edge plate (9) is connected to a pressure ring (10). When the movable ring (8) is screwed into the flange (2), it drives the pressure ring (10) to press against the outer side of the sealing ring (3), and also drives the raised edge plate (9) to be tightly against the outer side of the flange (2).

2. The high-sealing end cover for an electric motor according to claim 1, characterized in that: The sealing ring (3) has several inclined guide grooves (31) evenly arranged circumferentially on the outer corner of the side near the pressure ring (10), and several inclined guide blocks (11) are evenly arranged circumferentially on the inner circumferential sidewall of the pressure ring (10), and the guide blocks (11) correspond one-to-one with the guide grooves (31).

3. The high-sealing end cover for an electric motor according to claim 2, characterized in that: The outer end face of the sealing ring (3) is provided with a number of expansion joints (32) evenly distributed in the circumferential direction, and the expansion joints (32) and the guide groove (31) are alternately distributed.

4. The high-sealing end cover for an electric motor according to claim 1, characterized in that: The pressure ring (10) and the raised edge disc (9) are rotatably connected.

5. The high-sealing end cover for an electric motor according to claim 1, characterized in that: A sealing ring four (12) is embedded on the inner wall of the convex flange (9).

6. The high-sealing end cover for an electric motor according to claim 1, characterized in that: The connecting hole (4) consists of a primary hole (41) and a secondary hole (42) coaxially distributed. The primary hole (41) is close to the outer wall of the flange (2), and the inner diameter of the primary hole (41) is larger than the inner diameter of the secondary hole (42) to form a stepped hole.

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