New energy automobile motor transmission shaft with positioning function

Abstract

The new energy automobile motor transmission shaft with the positioning function comprises a transmission shaft body, an upper lining is arranged on the surface of the transmission shaft body, and a fixing piece is integrally formed on the surface of the upper lining. The positioning structure can effectively prevent the transmission shaft from generating radial runout during high-speed rotation, improves transmission precision and stability, enables the transmission shaft to be kept at a relatively fixed position in the radial direction, ensures that power can be stably transmitted to parts such as wheels from a motor, enables a vehicle to run more stably, and improves the transmission efficiency. The axial displacement of the transmission shaft can be accurately limited, so that the connection positions of the transmission shaft, the motor and the transmission part are kept fixed, the position deviation caused by axial movement during power transmission is avoided, the continuity and accuracy of power transmission are ensured, and the stable axial limiting is beneficial to maintaining the normal working state of the motor transmission shaft.

Description

Technical Field

[0001] This utility model relates to a motor drive shaft, specifically a new energy vehicle motor drive shaft with positioning function, belonging to the field of automotive parts technology. Background Technology

[0002] A driveshaft is a high-speed rotating body, consisting of a shaft tube, a telescopic sleeve, and a universal joint. It is an important component for transmitting power in automobile transmission. Driveshafts with positioning features are easy to install and disassemble and are widely used.

[0003] In the prior art, such as the positioning new energy vehicle motor drive shaft disclosed in announcement number CN202020040033.X, the positioning new energy vehicle motor drive shaft can automatically adjust the pump oil volume according to the rotation speed of the drive shaft, so that the drive shaft saves lubricating oil when rotating at low speed and has sufficient lubricating oil when rotating at high speed, resulting in better lubrication effect; however, this new energy vehicle motor drive shaft has some problems in use. The drive shaft is prone to axial movement and radial runout when rotating at high speed, which affects the accuracy and stability of transmission. Utility Model Content

[0004] The purpose of this utility model is to provide a new energy vehicle motor drive shaft with positioning function in order to solve at least one of the above-mentioned technical problems.

[0005] The present invention achieves the above objectives through the following technical solution: a new energy vehicle motor drive shaft with positioning function, comprising a drive shaft;

[0006] The drive shaft is provided with an upper bushing, and a fixing member is integrally formed on the surface of the upper bushing. The fixing member is installed on the vehicle body by bolts. The drive shaft is also provided with a lower bushing. Both the upper bushing and the lower bushing are integrally formed with connecting ears. The upper bushing and the lower bushing are connected by bolts and are rotatably connected to the outside of the drive shaft.

[0007] As a further embodiment of this utility model: both the upper bushing and the lower bushing have annular grooves on their end faces, and the same retaining ring is embedded in the annular grooves at the same end of the upper bushing and the lower bushing. The surface of the retaining ring has multiple balls distributed in a ring.

[0008] As a further embodiment of this utility model: a connecting sleeve is rotatably connected to the surface of the drive shaft, and the connecting sleeve is threadedly connected to the surfaces of the upper bushing and the lower bushing that form a closed loop.

[0009] As a further embodiment of this utility model: a tapered sleeve is rotatably connected to the tapered portion of the transmission shaft surface, and a rotating ring is rotatably connected to a groove opened on the surface of the tapered sleeve. Multiple connecting rods are fixed on one side of the rotating ring, and the same end of the multiple connecting rods is connected to the connecting sleeve.

[0010] As a further embodiment of this utility model: a locking screw is threaded into the threaded hole on the surface of the tapered sleeve, and one end of the locking screw, which passes through the tapered sleeve, is inserted into a fastening groove on the surface of the drive shaft.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model features a combination of an upper bushing, a fixing component, a lower bushing, a connecting ear, a retaining ring, balls, and a tapered sleeve. The connecting sleeve is threaded between the closed upper and lower bushings. This improves the stability of the connection between the upper and lower bushings and allows the connecting sleeve to compress the retaining ring, preventing it from falling off. During use, this positioning structure effectively prevents radial runout of the drive shaft during high-speed rotation, improving transmission accuracy and stability. It keeps the shaft in a relatively fixed position in the radial direction, ensuring that power is smoothly transmitted from the motor to the wheels and other components, resulting in a smoother vehicle ride.

[0013] 2. This utility model features a tapered section, a connecting rod, a locking screw, and a threaded hole. These components work together to allow the tapered sleeve to engage with the surface of the tapered section of the drive shaft. Simultaneously, the locking screw secures the tapered sleeve within a fastening groove on the drive shaft surface. This simplifies axial positioning of the drive shaft, precisely limiting its axial displacement and maintaining a fixed connection between the drive shaft, motor, and transmission components. This prevents positional deviations during power transmission caused by axial movement, ensuring the continuity and accuracy of power transmission. Stable axial positioning also helps maintain the normal operation of the motor drive shaft. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram of the connecting sleeve, fixing member and retaining ring in this utility model;

[0016] Figure 3 This is a schematic diagram of the upper bushing, lower bushing, and connecting ear in this utility model;

[0017] Figure 4 This is a schematic diagram of the conical sleeve, swivel, and connecting ear structure in this utility model;

[0018] Figure 5 In this utility model Figure 4 Enlarged schematic diagram of the structure at point A in the diagram;

[0019] In the diagram: 1. Drive shaft; 2. Upper bushing; 3. Fixing component; 4. Lower bushing; 5. Connecting lug; 6. Snap ring; 7. Ball bearing; 8. Tapered sleeve; 9. Groove; 10. Rotary ring; 11. Tapered part; 12. Connecting rod; 13. Locking screw; 14. Threaded hole; 15. Fastening groove; 16. Ring groove; 17. Connecting sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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. Example 1

[0021] like Figures 1 to 5 As shown, a new energy vehicle motor drive shaft with positioning function includes a drive shaft 1.

[0022] The surface of the drive shaft 1 is provided with an upper bushing 2, and the surface of the upper bushing 2 is integrally formed with a fixing member 3. The fixing member 3 is installed on the vehicle body by bolts. The surface of the drive shaft 1 is also provided with a lower bushing 4. The surfaces of the upper bushing 2 and the lower bushing 4 are integrally formed with connecting ears 5. The upper bushing 2 and the lower bushing 4 are connected by bolts and are rotatably connected to the outside of the drive shaft 1.

[0023] Both the upper bushing 2 and the lower bushing 4 have annular grooves 16 on their end faces. The same retaining ring 6 is embedded in the annular grooves 16 at the same end of the upper bushing 2 and the lower bushing 4. Multiple balls 7 are distributed in a ring on the surface of the retaining ring 6.

[0024] A connecting sleeve 17 is rotatably connected to the surface of the drive shaft 1. The connecting sleeve 17 is threadedly connected to the surfaces of the upper bushing 2 and the lower bushing 4, which form a closed loop.

[0025] Align the retaining ring 6 with the closed annular groove 16 formed between the upper bushing 2 and the lower bushing 4, and squeeze the retaining ring 6 into the closed annular groove 16. Then, connect the connecting sleeve 17 between the closed upper bushing 2 and the lower bushing 4 by means of a threaded connection. On the one hand, this can improve the stability of the connection between the upper bushing 2 and the lower bushing 4. On the other hand, it can make the connecting sleeve 17 squeeze the retaining ring 6 to prevent the retaining ring 6 from falling off. During use, this positioning structure can effectively prevent the drive shaft 1 from generating radial runout when rotating at high speed, improve the accuracy and stability of the transmission, keep it in a relatively fixed position in the radial direction, and ensure that the power can be smoothly transmitted from the motor to the wheels and other components, making the vehicle drive more smoothly. Example 2

[0026] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0027] A tapered sleeve 8 is rotatably connected to the tapered portion 11 on the surface of the drive shaft 1. A rotating ring 10 is rotatably connected to the groove 9 on the surface of the tapered sleeve 8. Multiple connecting rods 12 are fixed on one side of the rotating ring 10, and the same end of the multiple connecting rods 12 is connected to the connecting sleeve 17.

[0028] A locking screw 13 is threaded into the threaded hole 14 on the surface of the tapered sleeve 8. The locking screw 13 passes through one end of the tapered sleeve 8 and is inserted into the fastening groove 15 on the surface of the drive shaft 1.

[0029] The tapered sleeve 8 is engaged with the surface of the tapered portion 11 of the drive shaft 1. At the same time, the locking screw 13 is used to fix the position of the tapered sleeve 8 in the fastening groove 15 opened on the surface of the drive shaft 1, so as to achieve axial positioning of the drive shaft 1. It can accurately limit the axial displacement of the drive shaft 1, keep the connection position of the drive shaft 1 and the motor and transmission components fixed, avoid positional deviation during power transmission due to axial movement, ensure the continuity and accuracy of power transmission, and the stable axial limit helps to maintain the normal working state of the motor drive shaft 1.

[0030] Working principle: In use, the upper bushing 2 and the lower bushing 4 are first rotated on the surface of the drive shaft 1 through the connecting lug 5 and the matching bolts. The drive shaft 1 is then installed on the vehicle body through the fastener 3 and its matching bolts to facilitate pre-positioning with the drive shaft 1. Then, the retaining ring 6 is aligned with the closed annular groove 16 formed between the upper bushing 2 and the lower bushing 4, and the retaining ring 6 is squeezed into the closed annular groove 16. The connecting sleeve 17 is connected to the closed upper bushing 2 and the lower bushing 4 by means of thread. On the one hand, this can improve the stability of the connection between the upper bushing 2 and the lower bushing 4. On the other hand, it can make the connecting sleeve 17 squeeze the retaining ring 6 to prevent the retaining ring 6 from falling off. During use, this positioning structure can effectively prevent the drive shaft 1 from generating radial runout when rotating at high speed, improve the transmission accuracy and stability, keep it in a relatively fixed position in the radial direction, and ensure that the power can be smoothly transmitted from the motor to the wheels and other components, making the vehicle drive more smoothly.

[0031] When the connecting sleeve 17 is rotated, it moves to one side and is threaded between the upper bushing 2 and the lower bushing 4, pressing the retaining ring 6. At the same time, the tapered sleeve 8, which is connected to the connecting sleeve 17 via the connecting rod 12, moves on the surface of the drive shaft 1. The tapered sleeve 8 is then engaged with the surface of the tapered portion 11 of the drive shaft 1. Simultaneously, the locking screw 13 fixes the position of the tapered sleeve 8 in the fastening groove 15 on the surface of the drive shaft 1, so as to achieve axial positioning of the drive shaft 1. This accurately limits the axial displacement of the drive shaft 1, keeps the connection position of the drive shaft 1 and the motor and transmission components fixed, and avoids positional deviation during power transmission due to axial movement. This ensures the continuity and accuracy of power transmission, and the stable axial limit helps maintain the normal working state of the motor drive shaft 1.

[0032] It should be noted that a flange connecting plate is installed at the end of the drive shaft 1 for connecting with other components.

[0033] 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.

[0034] 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 new energy vehicle motor drive shaft with positioning function, comprising a drive shaft (1); characterized in that: The drive shaft (1) is provided with an upper bushing (2), and a fastener (3) is integrally formed on the surface of the upper bushing (2). The fastener (3) is installed on the vehicle body by bolts. The surface of the drive shaft (1) is also provided with a lower bushing (4). The surfaces of the upper bushing (2) and the lower bushing (4) are integrally formed with connecting ears (5). The upper bushing (2) and the lower bushing (4) are connected by bolts and rotatably connected to the outside of the drive shaft (1).

2. The new energy vehicle motor drive shaft with positioning function according to claim 1, characterized in that: Both the upper bushing (2) and the lower bushing (4) have annular grooves (16) on their end faces. The same retaining ring (6) is embedded in the annular grooves (16) at the same end of the upper bushing (2) and the lower bushing (4). Multiple balls (7) are distributed in a ring on the surface of the retaining ring (6).

3. The new energy vehicle motor drive shaft with positioning function according to claim 1, characterized in that: The surface of the drive shaft (1) is rotatably connected to a connecting sleeve (17), which is threaded onto the surfaces of the upper bushing (2) and the lower bushing (4) forming a closed loop.

4. The new energy vehicle motor drive shaft with positioning function according to claim 3, characterized in that: A tapered sleeve (8) is rotatably connected to the tapered part (11) on the surface of the drive shaft (1). A rotating ring (10) is rotatably connected in the groove (9) on the surface of the tapered sleeve (8). Multiple connecting rods (12) are fixed on one side of the rotating ring (10). The same end of the multiple connecting rods (12) is connected to the connecting sleeve (17).

5. The new energy vehicle motor drive shaft with positioning function according to claim 4, characterized in that: A locking screw (13) is threaded into the threaded hole (14) on the surface of the tapered sleeve (8). One end of the locking screw (13) passes through the tapered sleeve (8) and is inserted into the fastening groove (15) on the surface of the drive shaft (1).

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