A wheel hub motor with replaceable output shaft

Abstract

The utility model belongs to the technical field of wheel hub motor, especially a wheel hub motor of replaceable output shaft, including wheel hub motor, the power output end fixedly connected with transmission shaft of wheel hub motor, the left end fixedly connected with groove frame of transmission shaft, the outer surface fixed communication of groove frame has two groups of sliding tubes, the inside of every sliding tube all is connected with the limit rod of sliding, every group of limit rod is away from each other one end all is provided with the rotary collar, the inner wall of every sliding tube all is fixedly connected with the threaded tube, the inner wall of every threaded tube all is connected with the threaded rod of screw thread, every group of threaded rod is away from each other one end respectively with every group of rotary collar inner ring side face fixed connection, through setting up groove frame, sliding tube, limit rod, threaded tube, threaded rod and rotary collar, with the help of the rotary transmission of threaded rod in threaded tube, can drive rotary collar and limit rod along sliding tube and move, realize the quick fixing and release of sliding rod, so that can conveniently replace different output shafts.

Description

Technical Field

[0001] This utility model belongs to the field of hub motor technology, specifically relating to a hub motor with a replaceable output shaft. Background Technology

[0002] In-wheel motors integrate power, transmission, and braking devices within the wheel hub, also known as electric wheels. They eliminate the need for traditional clutches, gearboxes, drive shafts, and other components. By generating a rotating magnetic field through stator windings, they drive the rotor to directly rotate the wheel, enabling independent drive. This type of motor simplifies vehicle structure, improves energy efficiency and space utilization, and flexibly enables front-wheel drive, rear-wheel drive, and four-wheel drive. It also supports regenerative braking. However, it has drawbacks such as increased unsprung mass, higher cost, and reliability affected by the environment. It is suitable for electric vehicles, industrial vehicles, and special vehicles.

[0003] However, in practical applications, different vehicles or equipment have different requirements for the shape of the output shaft end of the hub motor. For example, some vehicle transmission systems require the output shaft end to be splined, while others may require a keyed connection or other special-shaped connection. Once the shape of the output shaft end of the traditional hub motor is determined, it is difficult to change. To meet different connection requirements, it is often necessary to replace the entire motor, which is not only costly but also wasteful of resources and causes great inconvenience to users.

[0004] To address the aforementioned issues, this application proposes a hub motor with a replaceable output shaft. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a hub motor with a replaceable output shaft, which features convenient output shaft replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hub motor with a replaceable output shaft, comprising a hub motor, wherein a transmission shaft is fixedly connected to the power output end of the hub motor, a slot frame is fixedly connected to the left end of the transmission shaft, two sets of sliding tubes are fixedly connected to the outer surface of the slot frame, a limit rod is slidably connected inside each sliding tube, a rotating collar is provided at the far end of each set of limit rods, a threaded tube is fixedly connected to the inner wall of each sliding tube, a threaded rod is threadedly connected to the inner wall of each threaded tube, the near ends of each set of threaded rods are fixedly connected to the far sides of the inner rings of each set of rotating collars, a sliding rod is slidably connected inside the slot frame, an output shaft is provided at the left end of the sliding rod, and the outer surface of each limit rod is in contact with the inner wall of the sliding rod.

[0007] As a preferred embodiment of this utility model, a reinforcing ring is fixedly connected to the outer surface of the transmission shaft, and the inner wall of the reinforcing ring is fixedly connected to the outer surface of the slot frame.

[0008] As a preferred embodiment of this utility model, each of the sliding tubes is fixedly connected to a connecting ring on its outer surface, and the side of each set of connecting rings that is close to each other is fixedly connected to the outer surface of the slot frame.

[0009] As a preferred embodiment of this utility model, a mounting ring is fixedly connected to the left end of the sliding rod, and the left side of the mounting ring is fixedly connected to the right end of the output shaft.

[0010] As a preferred technical solution of this utility model, a fixing ring is fixedly connected to the outer surface of the outer ring of each rotating collar, and the side of each group of fixing rings that is close to each other is fixedly connected to the side of each group of limiting rods that is far apart from each other.

[0011] As a preferred technical solution of this utility model, a limiting ring is fixedly connected to the outer surface of each threaded tube, and the side of each group of limiting rings that is close to each other is fixedly connected to the side of each group of sliding tubes that is far away from each other.

[0012] As a preferred technical solution of this utility model, each set of threaded rods has a rotating ring fixedly connected to one end of each group that is far apart from the other, and each rotating ring has anti-slip holes arranged at equal intervals on its outer surface.

[0013] As a preferred technical solution of this utility model, each set of rotating rings is provided with threaded pins arranged at equal intervals on the side that is far apart from each other, and the ends of each set of threaded pins that are close to each other are threaded through the rotating rings and extend into the interior of the threaded tube.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a slot frame, sliding tube, limiting rod, threaded tube, threaded rod, and rotating collar, the rotating collar and limiting rod can be driven to move along the sliding tube by the rotational transmission of the threaded rod in the threaded tube, realizing the quick fixing and release of the sliding rod. This allows for convenient replacement of different output shafts without having to replace the entire hub motor due to differences in output shaft specifications, effectively improving the motor's adaptability to different equipment, reducing replacement costs and operational difficulties. At the same time, the tight contact between the limiting rod and the inner wall of the sliding rod ensures structural stability during power transmission, preventing the output shaft from loosening or shifting, and ensuring reliable and efficient power transmission from the transmission shaft to the output shaft. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the slot frame in this utility model; Figure 3 This is a schematic diagram of the sliding tube structure in this utility model; Figure 4 This is a schematic diagram of the limiting rod in this utility model; Figure 5 This is a schematic diagram of the screwing ring in this utility model; In the diagram: 1. Hub motor; 2. Transmission shaft; 3. Slot frame; 4. Sliding rod; 5. Output shaft; 6. Reinforcing ring; 7. Sliding tube; 8. Mounting ring; 9. Limiting rod; 10. Limiting ring; 11. Tightening ring; 12. Anti-slip hole; 13. Threaded tube; 14. Threaded rod; 15. Rotating collar; 16. Fixed ring; 17. Threaded pin; 18. Connecting ring. Detailed Implementation

[0016] 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. Example

[0017] Please see Figure 1-5 The present invention provides the following technical solution: a hub motor with a replaceable output shaft, including a hub motor 1, a transmission shaft 2 fixedly connected to the power output end of the hub motor 1, a slot frame 3 fixedly connected to the left end of the transmission shaft 2, two sets of sliding tubes 7 fixedly connected to the outer surface of the slot frame 3, a limit rod 9 slidably connected inside each sliding tube 7, a rotating collar 15 provided at the far end of each set of limit rods 9, a threaded tube 13 fixedly connected to the inner wall of each sliding tube 7, a threaded rod 14 threadedly connected to the inner wall of each threaded tube 13, a threaded rod 14 threadedly connected to the inner wall of each set of threaded rods 14, a close end of each set of threaded rods 14 fixedly connected to the far side of the inner ring of each set of rotating collars 15, a sliding rod 4 slidably connected inside the slot frame 3, an output shaft 5 provided at the left end of the sliding rod 4, and the outer surface of each limit rod 9 in contact with the inner wall of the sliding rod 4; In this embodiment, the rotating collar 15 adopts a split inner and outer ring design. The outer ring is fixedly connected to the limiting rod 9, while the inner ring is connected to the threaded rod 14. The advantage of this structural design is that when the threaded rod 14 rotates in the threaded tube 13, the inner ring rotates synchronously with the threaded rod 14, while the outer ring only drives the limiting rod 9 to move smoothly along the sliding tube 7 along the axial direction. This effectively avoids the frictional loss caused by the limiting rod 9 following the rotation. At the same time, the sliding rod 4 has a pre-set matching opening inside, which can accurately cooperate with the limiting rod 9 to achieve limiting, ensuring that the locking or unlocking action of the limiting rod 9 on the sliding rod 4 is more accurate and smooth, further improving the stability and reliability of the structural operation.

[0018] Specifically, a reinforcing ring 6 is fixedly connected to the outer surface of the transmission shaft 2, and the inner wall of the reinforcing ring 6 is fixedly connected to the outer surface of the slot frame 3. In this embodiment, by setting the reinforcing ring 6, a ring-shaped reinforcing structure is formed at the connection between the transmission shaft 2 and the slot frame 3, which effectively disperses the stress at the connection between the two, avoids deformation or loosening of the connection due to the torque generated by long-term power transmission, and enhances the overall rigidity and stability of the connection between the transmission shaft 2 and the slot frame 3.

[0019] Specifically, each sliding tube 7 has a connecting ring 18 fixedly connected to its outer surface. The side of each set of connecting rings 18 that is close to each other is fixedly connected to the outer surface of the slot frame 3. In this embodiment, the sliding tube 7 and the slot frame 3 are stably connected by the connecting rings 18, which increases the contact area between the sliding tube 7 and the slot frame 3. This makes the sliding tube 7 more evenly stressed when it is subjected to the pushing or pulling force of the limiting rod 9, and avoids damage to the connection between the sliding tube 7 and the slot frame 3 due to excessive local stress, thus improving the stability of the installation of the sliding tube 7.

[0020] Specifically, a mounting ring 8 is fixedly connected to the left end of the sliding rod 4, and the left side of the mounting ring 8 is fixedly connected to the right end of the output shaft 5. In this embodiment, the connection between the sliding rod 4 and the output shaft 5 is achieved through the mounting ring 8, which increases the contact area between the two, making the output shaft 5 more stable when transmitting power. It also facilitates the installation and disassembly of the output shaft 5. When the output shaft 5 needs to be replaced, only the connection between the mounting ring 8 and the output shaft 5 needs to be operated, which simplifies the replacement process.

[0021] Specifically, a fixing ring 16 is fixedly connected to the outer surface of the outer ring of each rotating collar 15. The side of each set of fixing rings 16 that is close to each other is fixedly connected to the side of each set of limiting rods 9 that is far away from each other. In this embodiment, the outer ring of the rotating collar 15 and the limiting rod 9 are connected as a whole by the fixing ring 16, so that when the outer ring of the rotating collar 15 drives the limiting rod 9 to move, the force can be transmitted to the limiting rod 9 more evenly, avoiding the limiting rod 9 from tilting or jamming due to uneven force, and ensuring the smooth sliding of the limiting rod 9 along the sliding tube 7.

[0022] Specifically, a limiting ring 10 is fixedly connected to the outer surface of each threaded tube 13. The side of each set of limiting rings 10 that is close to each other is fixedly connected to the side of each set of sliding tubes 7 that is far away from each other. In this embodiment, the limiting ring 10 limits the position of the threaded tube 13 in the sliding tube 7, preventing the threaded tube 13 from undergoing axial displacement due to the rotational force of the threaded rod 14 during long-term use, ensuring the stability of the connection between the threaded tube 13 and the sliding tube 7, thereby ensuring the accuracy of the transmission of the threaded rod 14.

[0023] Specifically, each set of threaded rods 14 has a rotating ring 11 fixedly connected to one end of each other. Each rotating ring 11 has anti-slip holes 12 arranged at equal intervals on its outer surface. In this embodiment, the rotating ring 11 provides a convenient force application point for rotating the threaded rod 14, while the anti-slip holes 12 can increase the friction between the hand and the rotating ring 11, avoiding slippage during the rotating process. This allows the operator to rotate the threaded rod 14 more effortlessly and efficiently, and facilitates the adjustment of the position of the limit rod 9.

[0024] Specifically, each set of rotating rings 11 has threaded pins 17 arranged at equal intervals on the side away from each other. The ends of each set of threaded pins 17 that are close to each other are threaded through the rotating rings 11 and extend into the interior of the threaded tube 13. In this embodiment, through the threaded engagement of the threaded pins 17 with the rotating rings 11 and the threaded tube 13, after the threaded rod 14 is adjusted to the position, the threaded pins 17 are tightened and penetrate into the interior of the threaded tube 13, which can form a rigid locking structure. The self-locking characteristic of the thread further restricts the axial and circumferential displacement of the threaded rod 14, effectively preventing it from loosening due to the reaction force generated by equipment vibration or power transmission, thereby ensuring that the locking force of the limit rod 9 on the sliding rod 4 is always stable and ensuring the structural reliability during the power transmission process.

[0025] The working principle and usage process of this utility model are as follows: First, according to the connection requirements of the device to be adapted, select an output shaft 5 with a matching end structure. Securely connect the output shaft 5 to the sliding rod 4 using the mounting ring 8, ensuring a firm and secure connection. Then, align the assembled sliding rod 4 with the internal channel of the slot frame 3 and smoothly insert it so that the inner wall of the sliding rod 4 is aligned with the outer surface of the limiting rod 9. Next, the operator applies force using the anti-slip holes 12 on the outer surface of the rotating ring 11, rotating the ring 11 clockwise. The moving threaded rod 14 moves axially towards the sliding rod 4 within the threaded tube 13. At this time, the threaded rod 14 pushes the inner ring of the rotating collar 15 to rotate and move synchronously, while the outer ring of the rotating collar 15, due to its split design, only moves inward. Through the fixing ring 16, it drives the limiting rod 9 to slide inward along the sliding tube 7 until the outer surface of the limiting rod 9 is tightly fitted against the inner wall of the sliding rod 4, thus fixing the sliding rod 4. Afterward, the threaded pin 17 is aligned with the threaded hole on the tightening ring 11 and tightened clockwise to make its thread... The screw ring 11 penetrates and extends into the threaded tube 13, using the self-locking property of the thread to lock the position of the threaded rod 14 and prevent it from loosening. During operation, after the hub motor 1 starts, the power is transmitted to the slot frame 3 via the transmission shaft 2. The slot frame 3 drives the output shaft 5 to rotate synchronously through the sliding rod 4 locked by the limit rod 9, realizing the stable transmission of power to external equipment. During this process, the reinforcing ring 6 enhances the connection rigidity between the transmission shaft 2 and the slot frame 3, the connecting ring 18 improves the installation stability of the sliding tube 7, and the limit ring 10 ensures that the position of the threaded tube 13 is fixed. All components work together to ensure efficient and reliable power transmission. When it is necessary to replace the output shaft 5, first unscrew the threaded pin 17 counterclockwise, then rotate the screw ring 11 in the opposite direction to make the threaded rod 14 drive the limit rod 9 to move away from the sliding rod 4, releasing the locking state. After pulling the sliding rod 4 out of the slot frame 3, remove the old output shaft 5 from the mounting ring 8, replace it with a new output shaft 5, and reassemble and fix it. This completes the conversion to adapt to different equipment. The entire process does not require replacing the hub motor 1 body, making it convenient and cost-effective.

[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hub motor with a replaceable output shaft, characterized in that: The device includes a hub motor (1), the power output end of which is fixedly connected to a transmission shaft (2), the left end of which is fixedly connected to a slot frame (3), the outer surface of which is fixedly connected to two sets of sliding tubes (7), each of which is slidably connected to a limit rod (9), each set of limit rods (9) having a rotating collar (15) at the far end, each of which is fixedly connected to a threaded tube (13), each of which is threaded to a threaded rod (14), each set of threaded rods (14) having a close end to a side of the inner ring of each set of rotating collars (15), the slot frame (3) having a sliding rod (4), the left end of which is provided with an output shaft (5), and the outer surface of each limit rod (9) being in contact with the inner wall of the sliding rod (4).

2. A hub motor with a replaceable output shaft according to claim 1, characterized in that: A reinforcing ring (6) is fixedly connected to the outer surface of the transmission shaft (2), and the inner wall of the reinforcing ring (6) is fixedly connected to the outer surface of the slot frame (3).

3. A hub motor with a replaceable output shaft according to claim 1, characterized in that: Each of the sliding tubes (7) has a connecting ring (18) fixedly connected to its outer surface, and the side of each set of connecting rings (18) that is close to each other is fixedly connected to the outer surface of the slot frame (3).

4. A hub motor with a replaceable output shaft according to claim 1, characterized in that: The left end of the sliding rod (4) is fixedly connected to an installation ring (8), and the left side of the installation ring (8) is fixedly connected to the right end of the output shaft (5).

5. A hub motor with a replaceable output shaft according to claim 1, characterized in that: Each of the rotating collars (15) has a fixed ring (16) fixedly connected to its outer surface. The side of each set of fixed rings (16) that is close to each other is fixedly connected to the side of each set of limiting rods (9) that is far away from each other.

6. A hub motor with a replaceable output shaft according to claim 1, characterized in that: Each of the threaded tubes (13) has a limiting ring (10) fixedly connected to its outer surface. The side of each set of limiting rings (10) that is close to each other is fixedly connected to the side of each set of sliding tubes (7) that is far away from each other.

7. A hub motor with a replaceable output shaft according to claim 1, characterized in that: Each threaded rod (14) of each group is fixedly connected to a rotating ring (11) at one end that is far apart from each other, and each rotating ring (11) has anti-slip holes (12) arranged at equal intervals on its outer surface.

8. A hub motor with a replaceable output shaft according to claim 7, characterized in that: Each set of rotating rings (11) has threaded pins (17) arranged at equal intervals on the side away from each other. The ends of each set of threaded pins (17) that are close to each other are threaded through the rotating rings (11) and extend into the interior of the threaded tube (13).

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