Shaft connection structure and motor

Abstract

The utility model relates to power motor technical field, especially a kind of rotating shaft connecting structure and motor, including base, rotating shaft assembly and rotor shell, the bottom of base is provided with rotary connection cavity, rotating shaft assembly includes rotating shaft, first bearing, spacer ring, second bearing and fixed element, first bearing, spacer ring and second bearing are sequentially arranged in the outer periphery of rotating shaft, first bearing and second bearing are all arranged in rotary connection cavity, spacer ring is used to separate first bearing with second bearing, fixed clasp spring is used to fix second bearing in rotary connection cavity, one end of rotating shaft is with rotor shell.The utility model ensures the stability of motor, and then guarantees the stability and high efficiency of cleaning equipment work.No matter in long time continuous work of routine cleaning, or when coping with some complex cleaning task, motor can continuously and stably output power.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to a shaft connection structure and a motor. Background Technology

[0002] With the continuous development of technology, cleaning equipment is being used more and more widely in daily life and industrial production. As the core power component of cleaning equipment, the performance of the motor directly affects the working efficiency and service life of the equipment.

[0003] Currently, motors used in cleaning equipment on the market have some significant shortcomings in their shaft connection structures. Most existing motor shaft connection structures employ relatively traditional methods, such as simple key connections or ordinary clamp fixation. These connection methods struggle to guarantee the stability of the shaft connection under prolonged high-speed motor operation. Existing shaft connection structures also present certain difficulties in assembly and maintenance. The complex assembly process not only increases production time and costs, but also makes disassembly and replacement of parts extremely cumbersome during later maintenance due to structural instability, further impacting the normal operation of the cleaning equipment. Therefore, a new design improvement is needed for the existing motor shaft structure. Utility Model Content

[0004] To address the aforementioned issues, this invention ensures the stable performance of the motor, thereby guaranteeing the stability and efficiency of the cleaning equipment. Whether during long, continuous daily cleaning operations or handling complex cleaning tasks, the motor's shaft connection structure and motor provide a stable and continuous power output.

[0005] The technical solution adopted by this utility model is: a rotating shaft connection structure, including a base, a rotating shaft assembly and a rotor housing. The bottom of the base is provided with a rotating connection cavity. The rotating shaft assembly includes a rotating shaft, a first bearing, a spacer ring, a second bearing and a fixing element. The first bearing, the spacer ring and the second bearing are sequentially arranged on the outer periphery of the rotating shaft. The first bearing and the second bearing are both arranged in the rotating connection cavity. The spacer ring is used to separate the first bearing and the second bearing. The fixing snap ring is used to fix the second bearing in the rotating connection cavity. One end of the rotating shaft is connected to the rotor housing.

[0006] A further improvement to the above solution is that the base is provided with a fixed connection part, the fixed connection part is provided with a through hole, and one end of the through hole is connected to the rotating connection cavity.

[0007] A further improvement to the above solution is that the rotor housing is provided with a mounting cavity, and the side of the fixed connection part is provided with a wiring groove, which is used to connect the mounting cavity with the through hole.

[0008] A further improvement to the above scheme is that a limiting step is provided at one end of the rotary connecting cavity near the through hole, and the limiting step is used for limiting the installation of the first bearing.

[0009] A further improvement to the above scheme is that a fixing groove is provided at one end of the rotary connecting cavity facing the rotor housing, and the fixing spring is provided on the fixing groove.

[0010] A further improvement to the above scheme is that the two ends of the spacer ring respectively abut against the outer ring of the first bearing and the outer ring of the second bearing.

[0011] A further improvement to the above scheme is that a connecting element is provided at one end of the rotating shaft, and the connecting element is used to fix one end of the rotating shaft on the first bearing.

[0012] A further improvement to the above scheme is that the rotor housing is provided with a mating ring, and the rotating shaft is provided with a mating part, the mating part being used to connect with the mating ring.

[0013] A further improvement to the above scheme is that the mating part is provided with an interference fit tooth, and the interference fit tooth is used to make an interference fit with the inner diameter of the mating ring.

[0014] An electric motor, including the aforementioned shaft connection structure.

[0015] The beneficial effects of this utility model are: Compared to existing motor shaft connections, the rotating connection cavity at the bottom of the base of this invention provides a stable support environment for the shaft assembly. The first and second bearings are housed within the rotating connection cavity, effectively separated by a spacer ring to prevent mutual interference. A retaining spring firmly secures the second bearing within the cavity, ensuring the stability of the rotating shaft during high-speed rotation, reducing vibration and misalignment, thereby improving the overall reliability and durability of the motor and reducing the probability of failure due to structural loosening. The rotating shaft connects to the rotor housing, and with the cooperation of the two bearings, it achieves smooth and efficient rotation. The first and second bearings effectively reduce friction during rotation, lower energy loss, and improve the motor's transmission efficiency, enabling the motor to output greater power with lower energy consumption, meeting the power requirements of cleaning equipment in different working scenarios. This invention ensures the stable performance of the motor, thus guaranteeing the stability and efficiency of the cleaning equipment. Whether working continuously for extended periods in daily cleaning or handling complex cleaning tasks, the motor can continuously and stably output power, providing a reliable guarantee for the smooth operation of the cleaning equipment.

[0016] An electric motor employs the aforementioned shaft connection structure, providing a robust support framework for the shaft assembly through a rotating connection cavity at the bottom of the base. A first bearing, a spacer ring, and a second bearing are sequentially positioned on the outer circumference of the rotating shaft and housed within the rotating connection cavity. The spacer ring effectively separates the first and second bearings, preventing mutual friction and interference. A retaining ring secures the second bearing within the rotating connection cavity, ensuring a tight fit between the entire shaft assembly. This significantly reduces shaft wobble and misalignment during operation, guaranteeing structural stability during high-speed, long-term operation, reducing the likelihood of mechanical failures, and extending the motor's lifespan. The rotating shaft is connected to the rotor housing, and the use of the first and second bearings effectively reduces friction during rotation. This not only reduces energy loss during transmission and improves the motor's energy conversion efficiency but also enables the motor to respond to control commands more quickly and smoothly, achieving precise speed regulation and meeting the diverse operational needs of cleaning equipment. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the rotating shaft connection structure of this utility model; Figure 2 for Figure 1 Front view of the transfer shaft connection structure; Figure 3 for Figure 2 Sectional view of AA; Figure 4 for Figure 3 Enlarged diagram of point A in the diagram; Figure 5 for Figure 1 A partially exploded view of the transfer shaft connection structure.

[0018] Explanation of reference numerals in the attached drawings: Base 1, Rotary connecting cavity 11, Limiting step 111, Fixing slot 112, Fixing connecting part 12, Wiring groove 121, Through hole 13, Rotating shaft assembly 2, Rotating shaft 21, Connecting element 211, Mating part 212, Interference fit tooth 213, First bearing 22, Spacer ring 23, Second bearing 24, Fixing snap ring 25, Rotor housing 3, Housing cavity 31, Mating ring 32. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-5 As shown in one embodiment of this utility model, a rotating shaft connection structure is provided, including a base 1, a rotating shaft assembly 2, and a rotor housing 3. A rotating connection cavity 11 is provided at the bottom of the base 1. The rotating shaft assembly 2 includes a rotating shaft 21, a first bearing 22, a spacer ring 23, a second bearing 24, and a fixing element, namely a retaining ring 25. The first bearing 22, the spacer ring 23, and the second bearing 24 are sequentially arranged on the outer periphery of the rotating shaft 21. Both the first bearing 22 and the second bearing 24 are located in the rotating connection cavity 11. The spacer ring 23 separates the first bearing 22 from the second bearing 24, and the retaining ring 25 fixes the second bearing 24 within the rotating connection cavity 11. One end of the rotating shaft 21 is connected to the rotor housing 3. In this embodiment, the rotating connection cavity 11 at the bottom of the base 1 provides a stable support environment for the rotating shaft assembly 2. The first bearing 22 and the second bearing 24 are disposed within the rotary connecting cavity 11. A spacer ring 23 effectively separates them to prevent mutual interference. A retaining ring 25 firmly fixes the second bearing 24 within the rotary connecting cavity 11. The retaining ring 25 contacts the outer ring of the second bearing 24, ensuring the stability of the rotating shaft 21 during high-speed rotation, reducing vibration and offset, thereby improving the overall reliability and durability of the motor and reducing the probability of failure due to structural loosening. The rotating shaft 21 is connected to the rotor housing 3. With the cooperation of the two bearings, the rotating shaft 21 can achieve smooth and efficient rotation. The first bearing 22 and the second bearing 24 effectively reduce friction during rotation, reduce energy loss, and improve the transmission efficiency of the motor, enabling the motor to output greater power with lower energy consumption, meeting the power requirements of the cleaning equipment in different working scenarios. This embodiment ensures the stable performance of the motor, thereby guaranteeing the stability and efficiency of the cleaning equipment. Whether in long-term continuous work for daily cleaning or when dealing with complex cleaning tasks, the motor can continuously and stably output power, providing a reliable guarantee for the good operation of the cleaning equipment.

[0022] The base 1 is provided with a fixed connection part 12, and the fixed connection part 12 is provided with a through hole 13, one end of which is connected to the rotating connection cavity 11. Specifically, the rotor housing 3 is provided with a mounting cavity 31, and the side of the fixed connection part 12 is provided with a wiring groove 121, which is used to connect the mounting cavity 31 and the through hole 13. In this embodiment, the fixed connection part 12 provides an additional fixed support point for the base 1. This allows the motor to be installed more stably in the corresponding position of the cleaning equipment, reducing loosening or displacement caused by vibration or external impact, ensuring that the motor is always in good working condition, and improving the reliability and durability of the motor. One end of the through hole 13 on the fixed connection part 12 is connected to the rotating connection cavity 11. The mounting cavity 31 of the rotor housing 3 can be used to place electrical components, while the wiring groove 121 on the side connects the mounting cavity 31 and the through hole 13. This allows the internal wiring of the motor to be arranged in an orderly manner, avoiding messy tangling of the wiring, reducing the risk of mutual interference between the wiring, and improving the stability of the motor electrical system. The orderly wiring also facilitates the installation, maintenance and repair of the motor.

[0023] A limiting step 111 is provided at one end of the rotary connecting cavity 11 near the through hole 13. The limiting step 111 is used for limiting the installation of the first bearing 22. In this embodiment, the limiting step 111 contacts the outer ring of the first bearing 22, and the limiting step 111 provides a clear positioning mark for the installation of the first bearing 22. During motor assembly, workers can quickly and accurately place the first bearing 22 into the designated position in the rotary connecting cavity 11 based on the limiting step 111, reducing debugging time and errors during installation, improving motor assembly efficiency, and facilitating the consistency of product quality during large-scale production. The limiting step 111 effectively fixes and constrains the first bearing 22, preventing displacement of the first bearing 22 due to axial force or vibration during motor operation. When the motor is working, the rotating shaft 21 drives the first bearing 22 to rotate at high speed, and the limiting step 111 ensures that the first bearing 22 is always in the correct position, maintaining the stable structure of the rotating shaft assembly 2.

[0024] A fixing slot 112 is provided at the end of the rotary connecting cavity 11 facing the rotor housing 3, and the fixing spring 25 is disposed on the fixing slot 112. In this embodiment, the cooperation between the fixing slot 112 and the fixing spring 25 provides reliable axial positioning for the shaft assembly 2. The fixing spring 25, when engaged in the fixing slot 112, securely restrains the second bearing 24 within the rotary connecting cavity 11, preventing axial movement during motor operation. This ensures the accuracy of the relative positions of the various parts of the shaft assembly 2, making the rotating shaft 21 more stable during high-speed rotation, reducing vibration and noise caused by component displacement, improving the smoothness and reliability of motor operation, and reducing the probability of equipment failure. The design of the fixing slot 112 facilitates the installation and removal of the fixing spring 25. During motor production and assembly, workers can quickly and accurately install the fixing spring 25 into the fixing slot 112, improving assembly efficiency.

[0025] The spacer ring 23 abuts against the outer rings of the first bearing 22 and the second bearing 24 at its two ends, respectively. In this embodiment, the spacer ring 23 serves a supporting and positioning function. It ensures that the first bearing 22 and the second bearing 24 maintain a precise relative position, preventing the two bearings from approaching or colliding during motor operation. When the motor is running, the rotating shaft 21 generates significant torque and vibration. The spacer ring 23 effectively disperses these forces, ensuring that the first and second bearings 24 are evenly stressed, preventing bearing damage due to excessive local stress. This enhances the structural stability of the entire shaft assembly 2, reduces the probability of mechanical failure, and extends the service life of the motor. The presence of the spacer ring 23 prevents direct contact between the outer rings of the first bearing 22 and the second bearing 24, reducing friction between the two bearings, lowering energy loss, and improving the energy conversion efficiency of the motor.

[0026] A connecting element 211 is provided at one end of the rotating shaft 21, which is used to fix one end of the rotating shaft 21 to the first bearing 22. In this embodiment, the connecting element 211 achieves a firm connection between the rotating shaft 21 and the first bearing 22, effectively enhancing the stability of the entire rotating shaft connection mechanism. During high-speed operation of the motor, the rotating shaft 21 will be subjected to large torque and centrifugal force. The connecting element 211 can ensure that the rotating shaft 21 and the first bearing 22 are tightly fitted, preventing axial or radial displacement and shaking of the rotating shaft 21. This not only ensures the smooth operation of the motor and reduces noise caused by vibration, but also reduces wear between mechanical parts and extends the service life of the motor.

[0027] The rotor housing 3 is provided with a mating ring 32, and the rotating shaft 21 is provided with a mating part 212, which is used to connect with the mating ring 32. Specifically, the mating part 212 is provided with an interference fit tooth 213, and the interference fit tooth 213 is interference-fitted with the inner diameter of the mating ring 32. In this embodiment, the interference fit of the interference fit tooth 213 can ensure efficient and stable power transmission between the rotor housing 3 and the rotating shaft 21. When the motor is running, the rotational power generated by the rotor can be accurately transmitted to the rotating shaft 21 through this tight fit, reducing the loss in the power transmission process, improving the energy conversion efficiency of the motor, and enabling the cleaning equipment to obtain stronger and more stable power support, thereby completing the cleaning task more efficiently. The interference fit provides a firm connection. The interference fit tooth 213 is tightly embedded in the inner diameter of the mating ring 32, effectively preventing axial or radial displacement and shaking of the rotating shaft 21 during high-speed rotation. It enhances the rigidity and stability of the entire shaft connection mechanism, reduces the vibration and noise level of the motor during operation, and creates a quieter working environment for the cleaning equipment. It helps reduce wear and tear on mechanical parts and extend the service life of the motor.

[0028] An electric motor employs the aforementioned shaft connection structure, providing a robust support framework for the shaft assembly 2 via a rotating connection cavity 11 at the bottom of the base 1. A first bearing 22, a spacer 23, and a second bearing 24 are sequentially arranged on the outer periphery of the rotating shaft 21 and are all housed within the rotating connection cavity 11. The spacer 23 effectively separates the first and second bearings 24, preventing mutual friction and interference. A retaining ring 25 securely holds the second bearing 24 within the rotating connection cavity 11, ensuring a tight fit between the entire shaft assembly 2. This significantly reduces the shaking and offset of the rotating shaft 21 during operation, ensuring structural stability during high-speed, long-term operation, reducing the likelihood of mechanical failures, and extending the motor's service life. The rotating shaft 21 is connected to the rotor housing 3, and the use of the first and second bearings 24 effectively reduces friction during rotation. This not only reduces energy loss during transmission and improves the motor's energy conversion efficiency but also enables the motor to respond to control commands more quickly and smoothly, achieving precise speed regulation and meeting the diverse operational needs of cleaning equipment.

[0029] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotating shaft connection structure, characterized in that: The device includes a base, a rotating shaft assembly, and a rotor housing. The base has a rotating connection cavity at its bottom. The rotating shaft assembly includes a rotating shaft, a first bearing, a spacer ring, a second bearing, and a fixing element. The first bearing, the spacer ring, and the second bearing are sequentially arranged on the outer periphery of the rotating shaft. Both the first bearing and the second bearing are disposed within the rotating connection cavity. The spacer ring separates the first bearing from the second bearing. The fixing element fixes the second bearing within the rotating connection cavity. One end of the rotating shaft is connected to the rotor housing.

2. The shaft connection structure according to claim 1, characterized in that: The base is provided with a fixed connection part, and the fixed connection part is provided with a through hole, one end of which is connected to the rotating connection cavity.

3. The rotating shaft connection structure according to claim 2, characterized in that: The rotor housing is provided with a mounting cavity, and the side of the fixed connection part is provided with a wiring groove, which is used to connect the mounting cavity with the through hole.

4. The rotating shaft connection structure according to claim 2, characterized in that: A limiting step is provided at one end of the rotary connecting cavity near the through hole, and the limiting step is used for limiting the installation of the first bearing.

5. The rotating shaft connection structure according to claim 1, characterized in that: The rotating connecting cavity is provided with a fixing slot at one end facing the rotor housing, and the fixing element is a fixing spring, which is set on the fixing slot.

6. The rotating shaft connection structure according to claim 1, characterized in that: The two ends of the spacer ring respectively abut against the outer ring of the first bearing and the outer ring of the second bearing.

7. The rotating shaft connection structure according to claim 1, characterized in that: One end of the rotating shaft is provided with a connecting element, which is used to fix one end of the rotating shaft onto the first bearing.

8. The rotating shaft connection structure according to claim 1, characterized in that: The rotor housing is provided with a mating ring, and the rotating shaft is provided with a mating part, which is used to connect with the mating ring.

9. The rotating shaft connection structure according to claim 8, characterized in that: The mating part is provided with interference fit teeth, and the interference fit teeth are used to make an interference fit with the inner diameter of the mating ring.

10. An electric motor, characterized in that: Includes the shaft connection structure as described in any one of claims 1 to 9.

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