Motor shaft of motor stator fixed by flange

Abstract

The utility model discloses a motor shaft of a motor stator fixed by a flange. Aiming at the problems that a traditional motor stator is directly installed on a motor shaft, so that the internal space is limited, and a cable and a joint are easy to extrude and damage, a flange is additionally installed on the motor shaft, and the unilateral displacement of a stator supporting surface is realized by utilizing the screw connection of the flange and a stator bracket. The structure comprises a motor shaft, a left end cover, a right end cover, a stator support, a flange, a bearing, a cable and the like, one end of the flange is fixed with the motor shaft, the other end is in screw connection with the stator support, and the internal space layout of the stator is changed by adjusting the screw fastening degree. The design can improve the utilization rate of the internal space of the stator, avoid extrusion of cables and joints, improve the reliability and durability of the motor, has design flexibility, is convenient for customized design, is simple in structure and easy to implement, and is expected to be widely applied in the field of electric vehicles.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric motor technology field especially relates to a flange fixed motor stator motor shaft. BACKGROUND

[0002] In the process of the continuous development of electric vehicle technology, the performance improvement of the motor as one of the core components is crucial. However, the traditional electric vehicle motor has obvious limitations in internal space layout.

[0003] In the traditional design, the stator is usually directly installed on the motor shaft and fixed by the stator support. This fixing method greatly limits the effective use of the internal space of the stator when the motor size is limited. Due to the lack of space, the cable and cable joint are easily pressed in the motor. This pressing condition not only causes the cable sheath to be damaged, affecting the transmission of electric energy, but also may cause electrical faults such as short circuit, thereby reducing the performance and reliability of the motor. For example, in some miniaturized or high-performance electric vehicle motor designs, the limited space makes the layout of the cable extremely cramped, making it difficult to meet the normal working requirements.

[0004] Therefore, in order to meet the requirements of the development of electric vehicle technology for the performance improvement of the motor, an innovative design scheme is urgently needed, which can flexibly adjust the stator support position, thereby increasing the internal space of the stator, to ensure the normal arrangement of the cable and its joint, and avoid the problems of pressing and damage. SUMMARY

[0005] The utility model relates to a flange fixed motor stator motor shaft, mainly applied to the field of electric vehicle motor, aiming at solving the problems of internal space layout optimization and cable and joint arrangement of the motor.

[0006] STRUCTURE

[0007] The motor shaft is coaxially rotatably connected with the left end cover and the right end cover at both ends, and the stator support is sleeved on the outer circumferential surface of the motor shaft at the internal position of the left and right end covers. The flange is connected with the stator support at one end close to the left end cover, and the left bearing is sleeved on the outer circumferential surface of the flange and embedded in the side wall of the left end cover. The flange and the stator support are fixed by a plurality of screws, which fix the stator coil, the stator support and the shaft as a whole, and play the roles of motor support and stator coil fixation. The right bearing is sleeved on the flange and the stator support at one end close to the right end cover, and the right bearing is embedded in the inner wall of the right end cover. The flange and the stator support penetrate the cable, and when the left end cover and the right end cover are combined with the outer rotor and the stator coil, the motor main body structure is completed. The motor cable passes through the flange wire hole, and is linked and fixed with the coil winding wire head in the support.

[0008] The left end cover end center is embedded with an oil seal, and the inner ring surface of the oil seal abuts against the outer peripheral surface of the flange to play a sealing role to prevent lubricating oil from leaking, etc. The outer peripheral surface of the motor shaft and the inner ring surface of the flange are also embedded with a fixed component fixed pin key for enhancing the stability of the connection between the flange and the motor shaft and preventing the flange from rotating relative to the motor shaft.

[0009] Working principle

[0010] The flange, as a connecting piece, is fixed at one end on the motor shaft and connected at the other end to the stator support. The flange is fixed by screws between the flange and the stator support, and the actual installation position of the flange is at the inner diameter position of the end cover bearing, and the support surface tightly abuts against the flange to indirectly enlarge the space on the right side of the support.

[0011] When the motor is running, the outer rotor (wheel hub) rotates, the stator generates induced electromotive force under the action of the magnetic field, and then drives the motor to work. The left bearing and the right bearing ensure the stable support of the stator support in the end cover, reducing friction and vibration. The oil seal ensures the sealing of the motor interior, preventing external impurities from entering the motor interior and affecting the performance of the motor. By reasonably adjusting the position of the stator support, the optimal utilization of the internal space of the motor is realized, providing a good working environment for the cable and its connector, and also providing the possibility for customized design of the motor, which can flexibly adjust the internal space of the stator according to specific needs.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. Space utilization rate is improved: through the unique connection design of the flange and the stator support, the stator support surface is displaced to one side, significantly increasing the internal space of the stator. This provides more possibilities for the arrangement of cables and connectors, effectively solving the problem of limited internal space caused by the traditional motor installation method, making the internal layout of the motor more reasonable.

[0014] 2. Avoids the situation that the cables and connectors are squeezed and damaged due to the small space, reduces the motor failures caused by line problems, thereby improving the reliability and durability of the motor, and ensuring the stable and efficient operation of the motor.

[0015] 3. The design allows flexible adjustment of the internal space of the stator according to specific needs, such as different cable specifications, connector sizes or motor performance requirements, etc. This greatly facilitates the customized design of electric vehicle motors, helps to meet diverse market demands and improve product competitiveness.

[0016] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, which can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail, and the drawings are described as follows. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal cross-sectional structure of a motor shaft for fixing a motor stator with a flange, as proposed in this utility model.

[0018] Figure 2 This is a side view of the end face of the motor shaft of a flange-fixed motor stator proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of a motor shaft for fixing a motor stator using a flange, as proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of a motor shaft for fixing a motor stator using a flange, as proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of the stator support and flange installation structure for fixing the motor stator of a motor according to the present invention.

[0022] In the diagram: 1. Left end cover; 2. Right end cover; 3. Stator bracket; 4. Flange; 5. Left bearing; 6. Right bearing; 7. Motor shaft; 8. Cable; 9. Cable connector area; 10. Oil seal; 11. Fixing pin; 12. Adjusting bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1, referring to Figures 1 to 5

[0025] A motor shaft with flange-fixed motor stator

[0026] Preparation of motor shaft and related components

[0027] First, obtain motor shaft 7, which will serve as the core component of the entire structure, used for functions such as torque transmission. Motor shaft 7 should possess sufficient strength and precision to meet the requirements of motor operation.

[0028] Prepare the left end cover 1 and the right end cover 2, ensuring that their size and structure match the motor shaft 7, enabling coaxial rotation and forming a relatively enclosed space after assembly to accommodate other internal components of the motor. At the same time, ensure that they have sufficient strength and sealing to prevent dust, moisture and other impurities from entering the motor and affecting its performance.

[0029] A suitable stator support 3 should be selected, and its shape and size should be designed according to the specific requirements of the motor stator to ensure stable support of the stator. The end of the stator support 3 near the left end cover 1 should be able to connect effectively with the flange 4, and there should be no loosening or deformation when adjusting the stator support position.

[0030] Prepare flange 4. As a key connecting component, flange 4 has a structure at one end designed for fixed connection with motor shaft 7. For example, a suitable interface for mounting flange 4 can be machined on motor shaft 7, and then flange 4 can be fixed to motor shaft 7 using fixing pins 11 to ensure a firm and reliable connection between flange 4 and motor shaft 7, capable of withstanding various forces generated during motor operation. The other end of flange 4 is connected to stator support 3 via multiple adjusting bolts 12. The number and distribution of adjusting bolts 12 should be reasonable to allow for even adjustment of the position of stator support 3.

[0031] Select appropriate left bearing 5 and right bearing 6. Left bearing 5 should be able to fit tightly with the outer circumference of flange 4 and be stably embedded in the side wall of left end cover 1. Right bearing 6 should also fit tightly with the end of motor shaft 7 near right end cover 2 and be embedded in the inner wall of right end cover 2.

[0032] Prepare cable 8. The specifications and length of cable 8 should be selected according to the electrical performance requirements of the motor. It should be able to pass through flange 4 and stator support 3, and be able to transmit electrical energy normally during motor operation.

[0033] Component installation and connection

[0034] Install the left bearing 5 onto the outer circumference of the flange 4. Then, initially connect the flange 4 to the stator support 3 using multiple adjusting bolts 12. However, do not fully tighten the adjusting bolts 12 at this stage to allow for subsequent adjustment of the stator support surface position. Next, fit the flange 4, with the left bearing 5 and stator support 3, onto the position of the motor shaft 7 inside the left end cover 1. During the fixing process, ensure the coaxiality of the flange 4 and the motor shaft 7 to avoid eccentricity and other problems that could affect motor performance.

[0035] Pass the cable 8 through the flange 4 and the stator bracket 3, ensuring that the cable 8 is arranged reasonably and will not interfere with other components. At the same time, pay attention to the joint of the cable 8, and leave enough space to allow for normal arrangement and connection within the cable joint arrangement area 9 formed by the merging of the left end cover 1 and the right end cover 2.

[0036] The right bearing 6 is sleeved on the motor shaft 7 near one end of the right end cover 2, and then the right end cover 2 is installed on the motor shaft 7, so that the right bearing 6 is embedded in the inner wall of the right end cover 2, and the rotation of the motor shaft 7 at the right end cover 2 is smooth. When installing the right end cover 2, accurate cooperation with the left end cover 1 is required to ensure the sealing and integrity of the internal space after the two end covers are combined, and attention should be paid not to squeeze or damage the cable 8 that has been arranged.

[0037] Stator support surface position adjustment

[0038] According to the specific requirements of the internal space layout of the motor and the arrangement requirements of the cable 8 and its joint, the tightening degree of the adjusting bolt 12 between the flange 4 and the stator support 3 is adjusted. As described in the document, by tightening or loosening the adjusting bolt 12, the displacement of the stator support surface towards one side, such as the side of the motor shaft 7, can be controlled. During the adjustment process, some measuring tools such as calipers can be used to measure the displacement of the stator support 3 to ensure that the displacement meets the design requirements, thereby changing the internal space layout of the stator to provide sufficient arrangement space for the cable 8 and the cable joint, avoiding the problem of squeezing and damage caused by narrow space.

[0039] Final fixation and inspection

[0040] After adjusting the position of the stator support surface, the adjusting bolt 12 is completely tightened to ensure that the stator support 3 works stably in the new support position and does not appear loose or displacement. At the same time, the entire internal structure of the motor is checked again to ensure that all components are firmly installed, the cable 8 and its joint are arranged neatly and without interference, the motor shaft end covers are sealed well, etc. Some simple tests can be performed to ensure that the motor can operate normally.

[0041] Finally, the oil seal 10 is embedded at the center of the left end cover 1 end, so that the inner ring surface of the oil seal 10 abuts against the outer peripheral surface of the flange 4, further improving the sealing performance of the motor to prevent lubricating oil leakage and impurities from entering the motor interior. At the same time, the same fixed pin key 11 is embedded on the outer peripheral surface of the motor shaft 7 and the inner ring surface of the flange 4, enhancing the connection reliability between the flange 4 and the motor shaft 7.

[0042] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the technical field according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application can make equivalent replacement or change, which should be covered within the protection scope of the present application.

Claims

1. A motor shaft for fixing a motor stator with a flange, comprising a left end cover (1) and a right end cover (2), characterized in that, The left end cover (1) and the right end cover (2) are coaxially rotatable and are provided with the same motor shaft (7) in the center, the outer peripheral surface of the motor shaft (7) is provided with a stator support (3) at the inner position of the left end cover (1) and the right end cover (2), the stator support (3) is coaxially provided with a flange (4) near one end of the left end cover (1), the flange (4) is connected with the stator support (3) through a plurality of adjusting bolts (12), the outer peripheral surface of the flange (4) is provided with a left bearing (5), the left bearing (5) is embedded in the side wall of the left end cover (1), the flange (4) and the stator support (3) are penetrated by the same cable (8), the left end cover (1) and the right end cover (2) are combined to form a cable joint arrangement area (9) inside for arranging the joints of the cable (8), the motor shaft (7) is provided with a right bearing (6) near one end of the right end cover (2), and the right bearing (6) is embedded in the inner wall of the right end cover (2).

2. A motor shaft for securing a motor stator of a flange motor according to claim 1, characterized in that The oil seal (10) is embedded in the center of the end portion of the left end cover (1), and the inner annular surface of the oil seal (10) abuts against the outer peripheral surface of the flange (4).

3. The motor shaft of claim 1, wherein, The same fixing pin key (11) is embedded on the outer peripheral surface of the motor shaft (7) and the inner annular surface of the flange (4).

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