A brushless motor with a rotor skirt support structure

Abstract

The utility model discloses a brushless motor with rotor skirt support structure, include: stator base, the upper end fixedly connected with the installation ring, the outside of installation ring is provided with big bearing, the upper end of big bearing is contacted with two limit bolts of symmetrical distribution, the upper end fixedly connected with the installation cylinder of stator base, the outside of installation cylinder is provided with stator winding iron core, the inside sliding connection of installation cylinder has the installation rod, the upper end of installation rod is provided with rotor assembly, the utility model discloses be provided with installation ring and big bearing etc. component, the installation ring on stator base cooperates with big bearing, and stable support is provided for rotating part, and limit bolt accurately restricts big bearing axial displacement, and guarantees structure stability, and the bearing mounting groove of casing is closely contacted with big bearing, ensures that rotor assembly rotates stably, reduces vibration and abrasion, effectively promotes the reliability, the stability and the service life of motor operation.

Description

Technical Field

[0001] This utility model relates to the field of brushless motor technology, specifically a brushless motor with a rotor skirt support structure. Background Technology

[0002] In the field of motor technology, brushless motors have been widely used in numerous industries due to their significant advantages such as high efficiency, reliability, and low noise, covering industrial automation, aerospace, new energy vehicles, and home appliances. As the performance requirements of various industries continue to increase, the structural design and technological innovation of brushless motors have become crucial.

[0003] When the existing device is in use, the rotor is prone to rubbing against the stator under heavy load. The cost of the magnets is high, and the design requires an increased air gap, which in turn requires higher grade magnets to achieve the same performance. Therefore, we need to propose a brushless motor with a rotor skirt support structure. Utility Model Content

[0004] The purpose of this utility model is to provide a brushless motor with a rotor skirt support structure. By setting up components such as mounting rings and large bearings, the large bearings support the housing and other components, which facilitates the rotation of the housing and other components and reduces the wear of the device, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A brushless motor with a rotor skirt support structure includes:

[0007] A stator base has a mounting ring fixedly connected to its upper end. A large bearing is provided on the outer side of the mounting ring. Two symmetrically distributed limiting bolts are in contact with the upper end of the large bearing. A mounting cylinder is fixedly connected to the upper end of the stator base. A stator winding core is provided on the outer side of the mounting cylinder. A mounting rod is slidably connected inside the mounting cylinder. A rotor assembly is provided at the upper end of the mounting rod. A housing is fixedly connected to the outer side of the rotor assembly. A bearing mounting groove is provided inside the housing, and the bearing mounting groove is in contact with the large bearing.

[0008] Preferably, the upper end of the mounting ring has two symmetrically distributed threaded holes, and the two threaded holes are respectively threadedly connected to two limit bolts.

[0009] Preferably, the upper end of the rotor assembly is provided with a top cover, and the interior of the top cover has a plurality of mounting holes arranged in a ring.

[0010] Preferably, the lower end of the stator base contacts a copper pad, and the lower end of the copper pad contacts a retaining ring.

[0011] Preferably, the lower end of the retaining ring contacts an aluminum pad, and the lower end of the aluminum pad is provided with a screw.

[0012] Preferably, the mounting rod is slidably connected to the copper pad, the retaining ring, and the aluminum pad, respectively, and the mounting rod is threadedly connected to the screw.

[0013] Preferably, a connecting wire is fixedly connected to the side wall of the stator base, and the outside of the connecting wire is wrapped with an insulating protective sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model incorporates components such as an mounting ring and a large bearing. The mounting ring on the stator base cooperates with the large bearing to provide stable support for the rotating components. The limiting bolts precisely restrict the axial displacement of the large bearing, ensuring structural stability. The bearing mounting groove on the housing is in close contact with the large bearing, ensuring smooth rotation of the rotor assembly, reducing vibration and wear, and effectively improving the reliability, stability, and service life of the motor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is a partial structural schematic diagram of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the stator base and mounting ring and other components of this utility model;

[0020] Figure 5 This is a schematic diagram of the mounting rod and rotor assembly of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the housing and bearing mounting groove of this utility model.

[0022] In the diagram: 1. Stator base; 2. Mounting ring; 3. Large bearing; 4. Limit bolt; 5. Threaded hole; 6. Mounting cylinder; 7. Stator winding core; 8. Mounting rod; 9. Rotor assembly; 10. Top cover; 11. Housing; 12. Bearing mounting groove; 13. Copper pad; 14. Retaining ring; 15. Aluminum pad; 16. Screw; 17. Connecting wire. 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. 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.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a brushless motor with a rotor skirt support structure, comprising: a stator base 1, with a mounting ring 2 fixedly connected to its upper end, a large bearing 3 disposed on the outer side of the mounting ring 2, two symmetrically distributed limiting bolts 4 contacting the upper end of the large bearing 3, a mounting cylinder 6 fixedly connected to the upper end of the stator base 1, a stator winding core 7 disposed on the outer side of the mounting cylinder 6, a mounting rod 8 slidably connected inside the mounting cylinder 6, a rotor assembly 9 disposed at the upper end of the mounting rod 8, a housing 11 fixedly connected to the outer side of the rotor assembly 9, a bearing mounting groove 12 disposed inside the housing 11, and the bearing mounting groove 12 contacting the large bearing 3.

[0025] For example, the stator base 1, as the supporting foundation of the entire motor, possesses high strength and stability. It is typically made of high-quality metal materials, such as aluminum alloy, and undergoes precision machining to ensure dimensional accuracy and surface flatness. A mounting ring 2 is fixedly connected to its upper end by welding or bolting. The mounting ring 2 is annular and fits tightly with the stator base 1, serving to position and support other components. A large bearing 3 is located on the outer side of the mounting ring 2. The large bearing 3 is a high-precision rolling bearing; its inner ring fits tightly with the mounting ring 2, while its outer ring supports other rotating components, ensuring smooth rotation and low friction. Two symmetrically distributed limiting bolts 4 are in contact with the upper end of the large bearing 3. These two limiting bolts 4 are installed vertically, and by precisely controlling their screwing depth, the axial displacement of the large bearing 3 can be effectively limited, ensuring the stability of the motor's internal structure.

[0026] The upper end of the stator base 1 is also fixedly connected to the mounting cylinder 6. The mounting cylinder 6 is a hollow cylindrical structure, and its inner wall is finely polished to reduce friction with internal components. The outer side of the mounting cylinder 6 is provided with the stator winding core 7. The stator winding core 7 is made of multiple layers of silicon steel sheets, which has good magnetic permeability and can effectively reduce iron loss. The stator winding core 7 is wound with enameled wire of a specific specification to form the stator winding of the motor and provide a magnetic field for the motor.

[0027] An installation rod 8 is slidably connected inside the mounting cylinder 6. The surface of the installation rod 8 is smooth and has been specially treated to improve wear resistance. It can slide freely inside the mounting cylinder 6 to achieve specific motion functions. A rotor assembly 9 is set at the upper end of the installation rod 8. The rotor assembly 9 is the core rotating component of the motor, usually composed of a rotor core, permanent magnets, etc. It can rotate under the action of the stator magnetic field. A housing 11 is fixedly connected to the outside of the rotor assembly 9. The housing 11 is made of high-strength engineering plastic or metal material, which plays a role in protecting internal components and heat dissipation. A bearing mounting groove 12 is set inside the housing 11. The size of the bearing mounting groove 12 matches the outer ring of the large bearing 3. The bearing mounting groove 12 is in close contact with the large bearing 3 to ensure that the large bearing 3 can stably support the rotation of the housing 11 and the rotor assembly 9.

[0028] The upper end of the mounting ring 2 has two symmetrically distributed threaded holes 5, which are respectively threadedly connected to two limit bolts 4. For example, the two threaded holes 5 are respectively threadedly connected to two limit bolts 4. The limit bolts 4 are made of high-strength alloy steel and the surface is galvanized or blackened to improve their corrosion resistance. During installation, the limit bolts 4 are slowly screwed into the threaded holes 5, and the tightening torque is precisely controlled by a torque wrench to ensure that the connection between the limit bolts 4 and the mounting ring 2 is firm and reliable, while avoiding damage to the threads due to excessive tightening force.

[0029] A top cover 10 is provided at the upper end of the rotor assembly 9, and the interior of the top cover 10 has a plurality of mounting holes arranged in a ring. Exemplarily, the top cover 10 is made of a lightweight and high-strength material, such as aluminum alloy, which can reduce the overall weight of the motor and provide sufficient strength to protect the rotor assembly 9. The interior of the top cover 10 has a plurality of mounting holes arranged in a ring. During installation, the top cover 10 is firmly fixed to the rotor assembly 9 by bolts or other connectors passing through the mounting holes.

[0030] The lower end of the stator base 1 is in contact with a copper pad 13, the lower end of the copper pad 13 is in contact with a retaining ring 14, the lower end of the retaining ring 14 is in contact with an aluminum pad 15, and a screw 16 is provided at the lower end of the aluminum pad 15.

[0031] For example, the copper pad 13 is made of high-quality copper, which has good electrical and thermal conductivity. The lower end of the copper pad 13 contacts a retaining ring 14, which is made of high-strength spring steel and has a certain degree of elasticity. It can play a role in buffering and shock absorption when the motor is running. The lower end of the retaining ring 14 contacts an aluminum pad 15, which is made of aluminum alloy, is lightweight and has good thermal conductivity, and can help the motor dissipate heat. The lower end of the aluminum pad 15 is provided with a screw 16, which is used to fix the entire structure to the mounting base. The specifications of the screw 16 are selected according to the weight of the motor and the installation requirements to ensure that the fixation is firm and reliable.

[0032] Mounting rod 8 is slidably connected to copper pad 13, retaining ring 14 and aluminum pad 15 respectively, and mounting rod 8 is threadedly connected to screw 16.

[0033] For example, the surface of the mounting rod 8 is polished to achieve a certain level of smoothness in order to reduce friction with the copper pad 13, the retaining ring 14, and the aluminum pad 15. During the sliding process, in order to ensure the smoothness and stability of the movement, an appropriate amount of grease can be applied to the contact surfaces between the mounting rod 8 and each component. The mounting rod 8 is threadedly connected to the screw 16, and the thread specification of the screw 16 matches the thread on the mounting rod 8. By rotating the screw 16, the axial position of the mounting rod 8 can be fixed, thereby achieving precise positioning of the internal structure of the motor.

[0034] A connecting wire 17 is fixedly connected to the side wall of the stator base 1, and the outside of the connecting wire 17 is wrapped with an insulating protective sleeve. Exemplarily, the connecting wire 17 is used to connect the motor to an external power source or control system to realize the transmission of electrical energy and the control of signals. The connecting wire 17 is made of high-quality copper core wire, which has good conductivity and insulation properties. The insulating protective sleeve is made of high-temperature resistant and aging-resistant rubber material, which can effectively protect the connecting wire 17 from external environmental corrosion, such as preventing the intrusion of moisture, dust, and chemicals, while also preventing the connecting wire 17 from contacting other metal parts and causing a short circuit. The surface of the insulating protective sleeve is specially treated, possessing a certain degree of flexibility and wear resistance, and can adapt to the vibration and bending of the motor during operation.

[0035] Working principle: The mounting ring 2 is fastened to the upper end of the stator base 1 by welding or bolting. The inner ring of the large bearing 3 is installed in close fit with the mounting ring 2. The two limit bolts 4 are slowly screwed into the threaded holes 5 symmetrically distributed on the upper end of the mounting ring 2. The tightening torque is precisely controlled by a torque wrench. The mounting cylinder 6 is fixed on the upper end of the stator base 1. The stator winding core 7, which is made of multiple layers of silicon steel sheets and wrapped with enameled wire, is installed on the outside of the mounting cylinder 6.

[0036] Insert the smooth and wear-resistant mounting rod 8 into the mounting cylinder 6 so that it can slide freely. Install the rotor assembly 9 on the upper end of the mounting rod 8. Fix the housing 11 on the outside of the rotor assembly 9 to ensure that the bearing mounting groove 12 inside the housing 11 is in close contact with the outer ring of the large bearing 3. Install the top cover 10 on the upper end of the rotor assembly 9 and fix it by bolts or other connecting parts passing through the annular mounting hole inside the top cover 10.

[0037] At the lower end of the stator base 1, copper pad 13, retaining ring 14, and aluminum pad 15 are arranged in sequence. The entire structure is fixed to the mounting base with screws 16. The mounting rod 8 is slidably connected to the copper pad 13, retaining ring 14, and aluminum pad 15, and threadedly connected to the screws 16. Lubricant is applied to ensure smooth sliding. Finally, the connecting wire 17 wrapped with an insulating protective sleeve is fixed to the side wall of the stator base 1 for connecting to an external power supply or control system.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A brushless motor with a rotor skirt support structure, characterized in that, include: A stator base (1) is fixedly connected to an mounting ring (2) at its upper end. A large bearing (3) is provided on the outer side of the mounting ring (2). Two symmetrically distributed limiting bolts (4) are in contact with the upper end of the large bearing (3). An mounting cylinder (6) is fixedly connected to the upper end of the stator base (1). A stator winding core (7) is provided on the outer side of the mounting cylinder (6). An mounting rod (8) is slidably connected inside the mounting cylinder (6). A rotor assembly (9) is provided at the upper end of the mounting rod (8). A housing (11) is fixedly connected to the outer side of the rotor assembly (9). A bearing mounting groove (12) is provided inside the housing (11). The bearing mounting groove (12) is in contact with the large bearing (3).

2. A brushless motor with a rotor skirt support structure according to claim 1, characterized in that: The upper end of the mounting ring (2) is provided with two symmetrically distributed threaded holes (5), and the two threaded holes (5) are respectively threadedly connected to two limiting bolts (4).

3. A brushless motor with a rotor skirt support structure according to claim 1, characterized in that: The rotor assembly (9) is provided with a top cover (10) at its upper end, and the top cover (10) has a plurality of mounting holes arranged in a ring inside.

4. A brushless motor with a rotor skirt support structure according to claim 1, characterized in that: The lower end of the stator base (1) is in contact with a copper pad (13), and the lower end of the copper pad (13) is in contact with a retaining ring (14).

5. A brushless motor with a rotor skirt support structure according to claim 4, characterized in that: The lower end of the retaining ring (14) contacts an aluminum pad (15), and a screw (16) is provided at the lower end of the aluminum pad (15).

6. A brushless motor with a rotor skirt support structure according to claim 1, characterized in that: The mounting rod (8) is slidably connected to the copper pad (13), the retaining ring (14) and the aluminum pad (15) respectively, and the mounting rod (8) is threadedly connected to the screw (16).

7. A brushless motor with a rotor skirt support structure according to claim 4, characterized in that: A connecting wire (17) is fixedly connected to the side wall of the stator base (1), and the outside of the connecting wire (17) is wrapped with an insulating protective sleeve.

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