Connecting and sealing structure for motor shell and end cover of new energy automobile

Abstract

The utility model discloses a connection sealing structure of a new energy automobile motor shell and an end cover, which comprises a shell, a rear end cover connected at the rear end part of the shell and a front end cover arranged at the front end part of the shell through a connecting screw, the front end part of the shell is elastically connected with a sealing assembly, the front end cover is propped against one side of the sealing assembly, and the sealing assembly is connected with the rear end cover through a connecting screw. A plurality of reinforcing angle plates are evenly and fixedly connected to the position, close to the outer wall, of the inner side of the front end cover in the circumferential direction, and a plurality of reinforcing ribs are evenly and fixedly connected to the outer side of the front end cover in the circumferential direction. And the strength of the front end cover can be improved by using a plurality of reinforcing angle plates and reinforcing ribs. According to the utility model, the sealing assembly is especially additionally arranged at the connection part of the motor shell and the front end cover, and the assembly tightly seals the connection part during installation in an extrusion sealing mode, so that the motor is ensured to always keep an excellent sealing effect in a long-term use process.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle application technology, and in particular to a connection and sealing structure between the motor housing and the end cover of a new energy vehicle. Background Technology

[0002] New energy vehicle motors are devices that convert electrical energy into mechanical energy. In new energy vehicles, motors mainly serve as drive motors, converting electrical energy into mechanical energy to provide power for the vehicle and enable it to move.

[0003] The existing connection structure between the housing and the front cover of the drive motor of new energy vehicles generally adopts a rigid flange connection. This traditional design has an inherent defect of insufficient sealing performance. Under complex working conditions, the connection part is prone to micro gaps due to mechanical vibration, which leads to water penetration and contaminant intrusion. This can then cause systemic failures such as stator winding insulation failure and bearing lubrication contamination, seriously affecting the reliability and service life of the motor. Therefore, this utility model proposes a connection sealing structure between the housing and the end cover of a new energy vehicle motor. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide a sealing structure for the connection between the motor housing and the end cover of a new energy vehicle. This is achieved by adding a sealing component at the connection point between the motor housing and the end cover. This component uses a compression-type sealing method to tightly seal the connection during installation, thereby ensuring that the motor maintains excellent sealing performance throughout long-term use.

[0005] To solve the above-mentioned technical problems, the present invention provides a technical solution: a connection and sealing structure between the housing and the end cover of a new energy vehicle motor, including a housing, a rear end cover connected to the rear end of the housing, and a front end cover installed at the front end of the housing by connecting screws. The front end of the housing is elastically connected to a sealing component, and the front end cover abuts against one side of the sealing component and presses it into the sealing groove opened at the front end of the housing.

[0006] The present invention is further configured such that: multiple reinforcing corner plates are uniformly fixedly connected to the inner side of the front end cover near the outer wall in the circumferential direction, and multiple reinforcing ribs are uniformly fixedly connected to the outer side of the front end cover in the circumferential direction.

[0007] The above technical solution utilizes multiple reinforcing corner plates and reinforcing ribs to improve the strength of the front cover, thereby extending its service life.

[0008] The present invention is further configured such that: the sealing assembly includes a sealing ring, the side wall of the sealing ring is fixedly connected to an extrusion strip, and a plurality of positioning posts are uniformly fixedly connected in the circumferential direction near the inner wall of the side wall of the sealing ring, and springs are fixedly connected to the end faces of the plurality of positioning posts.

[0009] The above technical solution utilizes the spring carried by the positioning post to press against the inside of the positioning hole. When the sealing ring is pressed against the positioning hole, the elasticity of the spring after compression can be used to make the sealing ring stably installed between the front cover and the housing, ensuring the sealing effect at the connection.

[0010] The present invention is further configured such that the cross-section of the extrusion strip is tapered, and the extrusion strip abuts against the interior of the sealing groove opened on the front end face of the housing.

[0011] The above technical solution facilitates the extrusion strip to be pressed into the interior of the sealing groove during the extrusion of the sealing ring, and plastically deforms it to improve the sealing performance between the sealing groove and the sealing ring.

[0012] The present invention is further configured such that: a plurality of stators are uniformly fixedly connected to the inner wall of the housing, and the plurality of positioning pins are respectively slid into the positioning holes opened in the middle of the plurality of stators, and the springs on the end faces of the plurality of positioning pins are respectively pressed against the inner end of the positioning holes.

[0013] The above technical solution allows the sealing ring to slide inside the positioning hole via the positioning pin when it is squeezed, thereby ensuring the stability of the sealing ring during installation and improving the sealing effect.

[0014] The present invention is further configured such that: the cross-section of the sealing ring is Z-shaped and made of rubber material, and the outer wall of the sealing ring is tightly fitted to the inner wall of the housing near the front end.

[0015] The above technical solution allows the sealing ring to be squeezed during the installation of the front cover, ensuring a tight fit against the inner wall of the housing and guaranteeing a sealing effect.

[0016] The present invention is further configured such that: multiple screws penetrate the front end cover near the outer wall, and their end faces are threaded into the connecting holes provided inside the rear end cover.

[0017] The above technical solution ensures that the front and rear covers can be securely installed on the housing.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model proposes a sealing structure for the connection between the motor housing and the end cover of a new energy vehicle. A sealing component is specially added at the connection point between the motor housing and the front end cover. This component uses a compression-type sealing method to tightly seal the connection during installation, thereby ensuring that the motor maintains excellent sealing performance throughout long-term use. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a connection and sealing structure between a new energy vehicle motor housing and an end cover according to the present invention.

[0021] Figure 2 This is a first exploded view of the connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to this utility model;

[0022] Figure 3 This is a second exploded view of the connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to this utility model;

[0023] Figure 4 This is a cross-sectional view of the connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to this utility model.

[0024] Figure 5 This is a cross-sectional view of the connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to this utility model;

[0025] Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0026] In the diagram: 1. Housing; 11. Stator; 12. Positioning hole; 13. Connecting hole; 14. Sealing groove; 2. Rear end cover; 3. Front end cover; 31. Reinforcing angle plate; 32. Reinforcing rib; 4. Sealing assembly; 41. Sealing ring; 42. Extrusion strip; 43. Positioning post; 44. Spring; 5. Screw. Detailed Implementation

[0027] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0028] like Figures 1-3As shown, a sealing structure for connecting a motor housing and an end cover of a new energy vehicle includes a housing 1, a rear end cover 2 connected to the rear end of the housing 1, and a front end cover 3 installed at the front end of the housing 1 by connecting screws 5. Multiple reinforcing angle plates 31 are uniformly fixedly connected circumferentially on the inner side of the front end cover 3 near the outer wall, and multiple reinforcing ribs 32 are uniformly fixedly connected circumferentially on the outer side of the front end cover 3. The multiple reinforcing angle plates 31 and reinforcing ribs 32 can improve the strength of the front end cover 3, thus extending its service life. The front end cover 3 is pressed against one side of the sealing assembly 4 and squeezed into the sealing groove 14 opened at the front end of the housing 1. Multiple screws 5 penetrate the front end cover 3 near the outer wall, and their end faces are threaded into the connecting holes 13 provided inside the rear end cover 2, facilitating the secure installation of the front end cover 3 and the rear end cover 2 onto the housing 1 during installation.

[0029] like Figures 3-6 As shown, a sealing assembly 4 is elastically connected to the front end of the housing 1. The sealing assembly 4 includes a sealing ring 41 with a Z-shaped cross-section and made of rubber. The outer wall of the sealing ring 41 is tightly fitted to the inner wall of the housing 1 near the front end, so that when the front cover 3 is installed, it can be squeezed to make it tightly fit the inner wall of the housing 1, ensuring a sealing effect. A compression strip 42 is fixedly connected to the side wall of the sealing ring 41. The compression strip 42 has a tapered cross-section and abuts against the inside of the sealing groove 14 opened on the front face of the housing 1. This allows the compression strip 42 to be squeezed into the inside of the sealing groove 14 when the sealing ring 41 is squeezed, and to undergo plastic deformation, improving the sealing performance between the sealing ring 41 and the inner wall. The circumference of the side wall of the sealing ring 41 near the inner wall is... Multiple positioning posts 43 are fixedly connected in a uniform direction. Multiple stators 11 are fixedly connected in a uniform direction to the inner wall of the housing 1. The multiple positioning posts 43 slide into the positioning holes 12 opened in the middle of the multiple stators 11. The springs 44 on the end faces of the multiple positioning posts 43 are pressed against the inner ends of the positioning holes 12. When the sealing ring 41 is squeezed, it can slide inside the positioning holes 12 through the positioning posts 43, thereby ensuring the stability of the sealing ring 41 during installation and improving the sealing effect. The end faces of the multiple positioning posts 43 are fixedly connected with springs 44. By using the springs 44 carried by the positioning posts 43 to press against the inside of the positioning holes 12, when the sealing ring 41 is pressed against, the elasticity of the springs 44 after compression can be used to make the sealing ring 41 stably installed between the front end cover 3 and the housing 1, ensuring the sealing effect at the connection.

[0030] In use, the sealing component 4 is first inserted into the positioning hole 12 through the positioning post 43. Then, the screw 5 is passed through the front cover 3 and threaded onto the rear cover 2. At the same time, the front cover 3 squeezes the sealing ring 41, causing it to drive the extrusion strip 42 to squeeze into the sealing groove 14. The plastic deformation of the extrusion strip fills the sealing groove 14, thereby ensuring the sealing of the connection. Under the reaction force of the internal spring 44, the sealing component 4 is stably installed at the connection between the housing 1 and the front cover 3.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A sealing structure for connecting a motor housing and an end cover of a new energy vehicle, comprising a housing (1), a rear end cover (2) connected to the rear end of the housing (1), and a front end cover (3) mounted on the front end of the housing (1) by connecting screws (5), characterized in that: The front end of the housing (1) is elastically connected to a sealing component (4), and the front end cover (3) abuts against one side of the sealing component (4) and presses it into the sealing groove (14) opened at the front end of the housing (1).

2. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 1, characterized in that: Multiple reinforcing corner plates (31) are uniformly fixedly connected in the circumferential direction on the inner side of the front end cover (3) near the outer wall, and multiple reinforcing ribs (32) are uniformly fixedly connected in the circumferential direction on the outer side of the front end cover (3).

3. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 1, characterized in that: The sealing assembly (4) includes a sealing ring (41), and a compression strip (42) is fixedly connected to the side wall of the sealing ring (41). Multiple positioning posts (43) are evenly fixedly connected to the side wall of the sealing ring (41) near the inner wall in the circumferential direction. A spring (44) is fixedly connected to the end face of each of the multiple positioning posts (43).

4. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 3, characterized in that: The cross-section of the extrusion strip (42) is tapered, and the extrusion strip (42) abuts against the interior of the sealing groove (14) opened on the front end face of the housing (1).

5. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 3, characterized in that: The inner wall of the housing (1) is uniformly fixedly connected with multiple stators (11), and multiple positioning pins (43) slide into the positioning holes (12) opened in the middle of the multiple stators (11), and the springs (44) on the end faces of the multiple positioning pins (43) abut against the inner end of the positioning holes (12).

6. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 3, characterized in that: The sealing ring (41) has a Z-shaped cross-section and is made of rubber. The outer wall of the sealing ring (41) is tightly attached to the inner wall of the housing (1) near the front end.

7. The connection and sealing structure between the motor housing and the end cover of a new energy vehicle according to claim 1, characterized in that: Multiple screws (5) penetrate the front end cover (3) near the outer wall and are threaded to the connection hole (13) inside the rear end cover (2).

Images