Convenient-to-assemble motor shaft for new energy automobile motor

Abstract

The utility model relates to the technical field of automobiles, in particular to a convenient-to-assemble motor shaft for a new energy automobile motor, which comprises a first motor shaft connecting end, a second motor shaft connecting end connected behind the first motor shaft connecting end, a first baffle connected behind the second motor shaft connecting end, a first motor shaft main body connected behind the first baffle, and a second motor shaft main body connected behind the second baffle. A motor shaft limiting groove is formed in the upper portion of the outer wall of the first motor shaft body, a second oil injection pipe is connected to the rear portion of the first motor shaft body, and an oil injection protection pipe is connected to the rear portion of the second oil injection pipe. The permanent magnet can be effectively and well limited on the outer wall of the first motor shaft body through the arranged motor shaft limiting groove, the permanent magnet can be effectively fixed through the threaded spline and the fixing block, oil liquid in the cavity of the motor shaft can be effectively thrown out through the oil outlet hole, oil liquid entering from the oil inlet can be effectively guided to the oil outlet hole through the flow guide groove, and the oil liquid in the cavity of the motor shaft can be effectively separated. And the first baffle can effectively prevent the oil from flowing out of the connecting through hole and the tooth groove, and the situation of oil leakage can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a motor shaft for convenient assembly of a motor of a new energy automobile. Background Art

[0002] The shaft is an important part of the motor and is called the motor shaft. As the link between the motor and the equipment for electromechanical energy conversion, it supports the rotating parts, transmits torque, and determines the relative position of the rotating parts to the stator. Therefore, the motor shaft must have reliable strength and rigidity to ensure the realization of the preset design functions.

[0003] A hollow structure of a new energy motor shaft with announcement number CN217582847U includes a first shaft section, a second shaft section, a third shaft section, a transition shaft section and a fourth shaft section in the axial direction, the first shaft section is provided with a first hollow structure, the third shaft section is provided with a second hollow structure, a barrier is provided between the first hollow structure and the second hollow structure, the fourth shaft section is provided with a third hollow structure, and the transition shaft section is provided with a transition hollow structure for connecting the second hollow structure and the third hollow structure. Due to the setting of the hollow structure, the lightweight design of the new energy motor shaft is realized, the weight of the whole vehicle is reduced, which is of great significance for improving the cruising range of new energy vehicles.

[0004] In the above technical solution, a lightweight design is made for the new energy vehicle body through the hollow structure in the shaft section. However, the motor shaft in the motor will generate high temperature when rotating for a long time. The high temperature may cause the external permanent magnet to demagnetize. Once demagnetized, the motor is equivalent to failure, which may cause losses to the user. For this reason, we provide a motor shaft for easy assembly of new energy vehicle motors. Utility Model Content

[0005] The purpose of the utility model is to provide a motor shaft for easy assembly of a new energy vehicle motor, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A motor shaft for convenient assembly of a new energy vehicle motor, comprising a motor shaft connection end 1, a motor shaft connection end 2 connected to the rear of the motor shaft connection end 1, a baffle 1 connected to the rear of the motor shaft connection end 2, and a motor shaft main body 1 connected to the rear of the baffle 1, a motor shaft limiting groove is provided on the upper outer wall of the motor shaft main body 1, an oil filling pipe 2 is connected to the rear of the motor shaft main body 1, an oil filling protective pipe is connected to the rear of the oil filling pipe 2, an oil filling port is connected to the rear of the oil filling protective pipe, and oil outlet holes are provided at both sides of the central outer wall of the motor shaft main body 1;

[0008] A connecting through hole is provided at the front end of the inner wall of the motor shaft connecting end 1, a tooth groove is provided behind the connecting through hole, a motor shaft cavity is provided inside the motor shaft main body 1, a guide groove is provided on the outer surface of the motor shaft cavity, a threaded spline is provided on the outer wall of the oil filling pipe 2, an oil inlet is provided inside the oil filling port, and a guide cavity is provided at the connection between the motor shaft main body 1, the oil filling pipe 2 and the inner wall of the oil filling protective tube.

[0009] As a further description of the above technical solution: the motor shaft connection end 1 and the motor shaft connection end 2 are fixedly connected, and the motor shaft connection end 1 is welded to the baffle 1 through the motor shaft connection end 2, and the baffle 1 and the motor shaft body 1 are welded.

[0010] As a further description of the above technical solution: the motor shaft limiting grooves are symmetrically distributed about the center line of the motor shaft body one, and the oil outlet holes are symmetrically located on both sides of the outer wall of the motor shaft body one.

[0011] As a further description of the above technical solution: the motor shaft body 1 is welded to the oil filling pipe 2, the motor shaft body 1 is welded to the oil filling protective pipe through the oil filling pipe 2, and the oil filling protective pipe and the oil filling port are welded.

[0012] As a further description of the above technical solution: the tooth groove is located inside the motor shaft connecting end one, and the tooth groove and the connecting through hole are tightly fitted with the inner wall of the motor shaft connecting end one.

[0013] As a further description of the above technical solution: the motor shaft cavity and the guide groove are fixed to the inner wall of the motor shaft body, and the guide cavity is fixed to the rear of the motor shaft cavity.

[0014] As a further description of the above technical solution: the oil inlet forms a communication structure with the motor shaft cavity through the guide cavity, and the oil inlet is located at the rear of the guide cavity.

[0015] It can be seen from the above description that the technical problem to be solved by this application can definitely be solved through the above technical solution of this application.

[0016] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0017] The utility model can effectively limit the permanent magnet on the outer wall of the motor shaft main body one by setting the motor shaft limiting groove, and the threaded spline and the fixing block can effectively fix the permanent magnet, the oil outlet hole can effectively throw out the oil in the motor shaft cavity, the guide groove can effectively guide the oil entering from the oil inlet to the oil outlet hole, and can effectively let the oil flow out, and the baffle plate can effectively prevent the oil from flowing out from the connecting through hole and the tooth groove, and can effectively avoid oil leakage.

[0018] The utility model can quickly and effectively transmit the oil flowing into the oil inlet to the motor shaft cavity through the provided guide cavity, and the oil filling pipe 2 and the oil filling protective pipe are fixed to the oil filling port, which greatly improves the overall stability, and the gap in the motor shaft cavity greatly improves the lightweight of the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the external structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0023] In the figure: 1. Motor shaft connection end 1; 2. Motor shaft connection end 2; 3. Baffle 1; 4. Motor shaft body 1; 5. Motor shaft limit groove; 6. Oil filling pipe 2; 7. Oil filling protective tube; 8. Oil filling port; 9. Oil outlet hole; 10. Connecting through hole; 11. Tooth groove; 12. Motor shaft cavity; 13. Guide groove; 14. Guide cavity; 15. Oil inlet; 16. Threaded spline. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0025] As attached Figure 1 , Figure 2 and Figure 3As shown, the utility model provides a technical solution: a motor shaft for convenient assembly of new energy vehicle motors, including a motor shaft connecting end 1, a motor shaft connecting end 2 2 is connected to the rear of the motor shaft connecting end 1, the motor shaft connecting end 1 and the motor shaft connecting end 2 are fixedly connected, and a baffle 3 is connected to the rear of the motor shaft connecting end 2, the motor shaft connecting end 1 is welded to the baffle 3 through the motor shaft connecting end 2, and a motor shaft body 4 is connected to the rear of the baffle 3, the baffle 3 and the motor shaft body 4 are welded, a motor shaft limiting groove 5 is opened above the outer wall of the motor shaft body 4, the motor shaft limiting groove 5 can effectively limit the permanent magnet to the outer wall of the motor shaft body 4, the motor shaft limiting groove 5 is symmetrically distributed about the center line of the motor shaft body 4, an oil filling pipe 2 6 is connected to the rear of the motor shaft body 4, an oil filling protective pipe 7 is connected to the rear of the oil filling pipe 2 6, and the rear of the oil filling protective pipe 7 The motor shaft body 1 is connected with an oil filling port 8, and oil outlet holes 9 are provided at both sides of the central outer wall of the motor shaft body 4. The oil outlet holes 9 are symmetrical about the outer wall of the motor shaft body 4. A connecting through hole 10 is provided at the front end of the inner wall of the motor shaft connecting end 1. A tooth groove 11 is provided behind the connecting through hole 10. The tooth groove 11 is located inside the motor shaft connecting end 1. The tooth groove 11 and the inner wall of the connecting through hole 10 of the motor shaft connecting end 1 are tightly fitted. The motor shaft body 4 is provided with a motor shaft Cavity 12, a guide groove 13 is provided on the outer surface of the motor shaft cavity 12, a threaded spline 16 is provided on the outer wall of the oil filling pipe 6, an oil inlet 15 is provided inside the oil filling port 8, and the oil outlet hole 9 can effectively throw out the oil in the motor shaft cavity 12, and the guide groove 13 can effectively guide the oil entering from the oil inlet 15 to the oil outlet hole 9, and a guide cavity 14 is provided at the connection between the motor shaft body 1 4 and the inner wall of the oil filling pipe 6 and the oil filling protective tube 7, and the oil inlet 15 is located behind the guide cavity 14. Embodiment 2

[0026] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0027] The solution in the first embodiment is further introduced below in combination with a specific working method, as described below for details:

[0028] like Figure 2 , Figure 3 and Figure 4As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the motor shaft body 4 and the oil filling pipe 2 6 are welded, the motor shaft body 4 is welded to the oil filling protective tube 7 through the oil filling pipe 2 6, the oil filling protective tube 7 and the oil filling port 8 are welded, the motor shaft cavity 12 and the guide groove 13 are fixed to the inner wall of the motor shaft body 4, the guide cavity 14 is fixed to the rear of the motor shaft cavity 12, the oil inlet 15 forms a connecting structure with the motor shaft cavity 12 through the guide cavity 14, the guide cavity 14 can quickly and effectively transfer the oil flowing into the oil inlet 15 to the motor shaft cavity 12, and the gap in the motor shaft cavity 12 greatly improves the lightweight of the motor shaft, the oil filling pipe 2 6 and the oil filling protective tube 7 are fixed to the oil filling port 8, which greatly improves the overall stability.

[0029] Working principle: First, the outer wall of the motor shaft connection end 1 and the motor shaft connection end 2 can be installed in a variety of ways, and the baffle 13 can effectively fix the motor shaft connection end 1 and the motor shaft connection end 2 to one end of the motor shaft body 4, and the motor shaft connection end 1 and the motor shaft connection end 2 can fix the connecting through hole 10 and the tooth groove 11 to one end of the motor shaft body 4. Secondly, the oil filling protection tube 7 and the oil filling port 8 can effectively allow the guide cavity 14 and the oil inlet 15 to dredge the oil. The dredged oil The liquid flows into the guide groove 13 through the motor shaft cavity 12, and then flows out to the outside through the oil outlet hole 9, which can effectively fan the heat treatment of the motor shaft, and the oil filling pipe 6 can effectively connect the oil filling protective tube 7 and the oil filling port 8 with the other end of the motor shaft body 4, which can effectively improve the stability between the whole. The motor shaft limiting groove 5 can effectively limit the parts required on the outer wall of the motor shaft body 4, and then the limited parts are fixed to the fixing device through the threaded spline 16, which can effectively facilitate the user to install.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor shaft for convenient assembly of a new energy vehicle motor, comprising a motor shaft connection end 1 (1), characterized in that: The rear of the motor shaft connection end 1 (1) is connected to the motor shaft connection end 2 (2), and the rear of the motor shaft connection end 2 (2) is connected to the baffle 1 (3), and the rear of the baffle 1 (3) is connected to the motor shaft main body 1 (4), a motor shaft limiting groove (5) is provided on the upper part of the outer wall of the motor shaft main body 1 (4), the rear of the motor shaft main body 1 (4) is connected to the oil filling pipe 2 (6), the rear of the oil filling pipe 2 (6) is connected to the oil filling protective pipe (7), the rear of the oil filling protective pipe (7) is connected to the oil filling port (8), and the central outer wall of the motor shaft main body 1 (4) is provided with oil outlet holes (9); A connecting through hole (10) is provided at the front end of the inner wall of the motor shaft connecting end (1), a tooth groove (11) is provided behind the connecting through hole (10), a motor shaft cavity (12) is provided inside the motor shaft main body (4), a guide groove (13) is provided on the outer surface of the motor shaft cavity (12), a threaded spline (16) is provided on the outer wall of the oil filling pipe (6), an oil inlet (15) is provided inside the oil filling port (8), and a guide cavity (14) is provided at the connection between the inner wall of the motor shaft main body (4), the oil filling pipe (6) and the oil filling protective pipe (7).

2. A motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The motor shaft connection end 1 (1) and the motor shaft connection end 2 (2) are fixedly connected, and the motor shaft connection end 1 (1) is welded to the baffle 1 (3) through the motor shaft connection end 2 (2), and the baffle 1 (3) and the motor shaft body 1 (4) are welded.

3. The motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The motor shaft limiting grooves (5) are symmetrically distributed about the center line of the motor shaft main body (4), and the oil outlet holes (9) are symmetrically located on both sides of the outer wall of the motor shaft main body (4).

4. The motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The motor shaft body 1 (4) and the oil filling pipe 2 (6) are connected by welding, the motor shaft body 1 (4) is connected by welding to the oil filling protective pipe (7) through the oil filling pipe 2 (6), and the oil filling protective pipe (7) and the oil filling port (8) are connected by welding.

5. The motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The tooth groove (11) is located inside the motor shaft connecting end one (1), and the tooth groove (11) and the connecting through hole (10) are tightly fitted with the inner wall of the motor shaft connecting end one (1).

6. The motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The motor shaft cavity (12) and the guide groove (13) are fixed to the inner wall of the motor shaft body (4), and the guide cavity (14) is fixed to the rear of the motor shaft cavity (12).

7. The motor shaft for convenient assembly of a new energy vehicle motor according to claim 1, characterized in that: The oil inlet (15) forms a communication structure with the motor shaft cavity (12) through the flow guide cavity (14), and the oil inlet (15) is located behind the flow guide cavity (14).

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