An ultra-high-speed motor adaptive balancing front cover

Abstract

The utility model discloses a sonic motor adaptive balancing front cover, which specifically relates to the technical field of motor front covers, including a mounting tube, wherein a front cover assembly is arranged inside the mounting tube. The utility model transmits the additional mechanical stresses such as vibration and impact generated during the operation of the rotor assembly to the front cover shell in the front cover assembly through the mounting tube, and at this time, the front cover shell can be deflected through the annular cavity arranged in the mounting tube, and the influence of direct force is reduced through this rotation, thereby avoiding the wear of the front cover shell caused by direct fixation between the front cover shell and the mounting tube, which affects the stability of the equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of motor front covers, and more specifically to an ultra-high-speed motor self-adaptive balancing front cover. Background Art

[0002] Brushless motor is a relatively complex type of high-efficiency, low-power motor, usually composed of rotor, stator, electronic controller, connecting bearings, front cover and rear cover, terminal box, etc. The front cover is usually used to protect the internal parts of the motor and provide mechanical support.

[0003] According to the announcement number "CN116937888A", it is "a 120,000-rpm ultra-high-speed blowing and exhaust brushless motor", which includes a casing, including a coaxially arranged outer shell and a fixed cylinder, and an air inlet and a vent are respectively opened at both ends of the outer shell; a stator assembly is passed through the casing, including a stator rear bracket coaxially arranged with the fixed cylinder, a stator coil passed through the stator rear bracket, and a stator rear connecting bearing seat integrally formed with the stator rear bracket; a rotor assembly is passed through the stator coil, including a rotor shaft, a permanent magnet sleeved on the middle of the rotor shaft, and a first connecting bearing and a second connecting bearing arranged at both ends of the rotor shaft; an impeller is rotatably arranged at one end of the fixed cylinder facing the air inlet, and one end of the rotor shaft is fixedly connected to the impeller after passing through the first connecting bearing to drive the impeller to rotate; a circuit board is electrically connected to the stator coil; and a protective cylinder.

[0004] In the actual production process of the brushless motor in the above patent, the outer shell, the fixing cylinder and the connecting plate can be integrally formed by the injection molding process. However, when the fixing cylinder is actually applied to the working process of the brushless motor, the vibration and impact generated when the motor is running will cause additional mechanical stress on the front cover, and the fixed installation of the fixing cylinder and the connecting plate will cause wear of the fixing cylinder, which will affect the stability of the equipment during use. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides an ultra-high-speed motor adaptive balancing front cover. The technical problem to be solved by the present invention is that the vibration and impact generated during the operation of the motor will produce additional mechanical stress on the front cover, and the fixed installation of the fixing tube and the connecting plate will cause wear of the fixing tube, thereby affecting the stability of the equipment during use.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an ultra-high-speed motor adaptive balancing front cover, comprising a mounting tube, wherein a front cover assembly is arranged inside the mounting tube.

[0007] In a preferred embodiment, the front cover assembly includes a connecting bearing arranged inside the mounting cylinder, a front cover shell is arranged outside the connecting bearing, the connecting bearing is composed of an inner ring fixedly connected to the mounting cylinder and an outer ring fixedly connected to the front cover shell, and a plurality of balls are arranged between the inner ring and the outer ring.

[0008] In a preferred embodiment, a mounting groove is provided inside the front cover shell, the outer ring is located inside the mounting groove, and a heat dissipation air cavity communicating with the mounting groove is also provided inside the mounting groove.

[0009] In a preferred embodiment, one end of the front cover shell is provided with a plurality of air inlets which are mutually interlinked with the heat dissipation air cavity, and the plurality of air inlets are distributed in a ring shape with the mounting cylinder as the center.

[0010] In a preferred embodiment, an annular cavity matching the overall outer diameter of the front cover shell is disposed inside the installation cylinder, and the front cover shell is movably disposed inside the installation cylinder through the annular cavity.

[0011] In a preferred embodiment, a contact portion is disposed on the outer wall of the front cover shell, the surface of the contact portion is polished, and an avoidance groove is formed on the surface of the contact portion.

[0012] Technical effects of the utility model:

[0013] The utility model is provided with a front cover assembly, and the additional mechanical stresses such as vibration and impact generated during the operation of the rotor assembly are transmitted to the front cover shell in the front cover assembly through the mounting cylinder. At this time, the front cover shell can be deflected by the annular cavity arranged in the mounting cylinder, and the influence of direct force is reduced by this rotation, thereby avoiding the front cover shell being worn due to direct fixation between the front cover shell and the mounting cylinder, which affects the stability of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the front cover assembly of the utility model;

[0016] Figure 3 It is a sectional exploded view of the front cover shell of the present utility model.

[0017] The accompanying drawings are marked as follows: 1. mounting cylinder; 2. stator assembly; 3. PCB plug-in board; 4. heat dissipation fan wheel; 5. front cover shell; 6. connecting bearing; 7. heat dissipation air cavity; 8. air inlet; 9. avoidance groove; 10. mounting groove; 11. contact part. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 3 As shown, the utility model provides an ultra-high-speed motor adaptive balancing front cover, including a mounting cylinder 1, an inner wall of the mounting cylinder 1 is provided with a stator assembly 2, the stator assembly 2 is located inside the mounting cylinder 1, a PCB plug-in board 3 is provided at one end of the stator assembly 2, a heat dissipation fan wheel 4 is provided at the end of the mounting cylinder 1 away from the PCB plug-in board 3, a front cover assembly is provided between the stator assembly 2 and the heat dissipation fan wheel 4, the front cover assembly includes a connecting bearing 6 arranged inside the mounting cylinder 1, a front cover shell 5 is provided outside the connecting bearing 6, the connecting bearing 6 is composed of an inner ring fixedly connected to the mounting cylinder 1 and an outer ring fixedly connected to the front cover shell 5, and a plurality of balls are provided between the inner ring and the outer ring.

[0020] like Figure 1-Figure 3 As shown, a mounting groove 10 is provided inside the front cover shell 5, and the outer ring is located inside the mounting groove 10. A heat dissipation air cavity 7 which is connected with the mounting groove 10 is also provided inside the mounting groove 10. A plurality of air inlets 8 which are connected with the heat dissipation air cavity 7 are provided at one end of the front cover shell 5. The air generated by the heat dissipation wind wheel 4 is blown into the mounting cylinder 1 through the air inlet 8 to dissipate the heat of the stator assembly 2 and the rotor assembly, thereby ensuring the heat dissipation effect of the equipment.

[0021] like Figure 1-Figure 3 As shown, the interior of the mounting cylinder 1 is provided with an annular cavity matching the overall outer diameter of the front cover shell 5, and the front cover shell 5 is movably arranged inside the mounting cylinder 1 through the annular cavity. Through this structural arrangement, additional mechanical stresses such as vibration and impact generated during the operation of the rotor assembly are avoided and transmitted to the front cover shell 5 in the front cover assembly through the mounting cylinder 1.

[0022] like Figure 1-Figure 3 As shown, the outer wall of the front cover shell 5 is provided with a contact portion 11, and the surface of the contact portion 11 is polished. The smoothness of the contact portion 11 is improved to reduce the wear caused by the rotation of the front cover shell 5 in the annular cavity. The surface of the contact portion 11 is provided with an avoidance groove 9. By setting the avoidance groove 9, the contact surface between the front cover shell 5 and the annular cavity is reduced, thereby further reducing the wear between the front cover shell 5 and the mounting tube 1.

[0023] The working principle and use process of this utility model:

[0024] Power is supplied to the rotor assembly through the PCB plug-in board 3, so that the rotor assembly is energized to generate a magnetic field for operation, driving the heat dissipation fan wheel 4 to rotate, so that the heat dissipation fan wheel 4 blows air to promote air circulation to dissipate heat for the equipment. In this process, the additional mechanical stresses such as vibration and impact generated by the operation of the rotor assembly are transmitted to the front cover shell 5 in the front cover assembly through the mounting tube 1. At this time, the front cover shell 5 can be deflected by the annular cavity set in the mounting tube 1. This rotation reduces the impact of direct force, thereby avoiding direct fixation between the front cover shell 5 and the mounting tube 1, which will cause wear of the front cover shell 5 and affect the stability of equipment use.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultra-high-speed motor adaptive balancing front cover, comprising a mounting tube (1), characterized in that: A front cover assembly is arranged inside the installation cylinder (1).

2. The ultra-high-speed motor adaptive balancing front cover according to claim 1, characterized in that: The front cover assembly comprises a connecting bearing (6) arranged inside the mounting tube (1), a front cover shell (5) being arranged outside the connecting bearing (6), the connecting bearing (6) comprising an inner ring fixedly connected to the mounting tube (1) and an outer ring fixedly connected to the front cover shell (5), a plurality of balls being arranged between the inner ring and the outer ring.

3. The ultra-high-speed motor adaptive balancing front cover according to claim 2, characterized in that: The front cover shell (5) is provided with a mounting groove (10) inside, the outer ring is located inside the mounting groove (10), and the mounting groove (10) is also provided with a heat dissipation air cavity (7) which is in communication with the mounting groove (10).

4. The ultra-high-speed motor adaptive balancing front cover according to claim 3, characterized in that: One end of the front cover shell (5) is provided with a plurality of air inlets (8) which are interconnected with the heat dissipation air cavity (7), and the plurality of air inlets (8) are distributed in a ring shape with the mounting tube (1) as the center.

5. The ultra-high-speed motor adaptive balancing front cover according to claim 2, characterized in that: An annular cavity matching the overall outer diameter of the front cover shell (5) is provided inside the installation cylinder (1), and the front cover shell (5) is movably arranged inside the installation cylinder (1) through the annular cavity.

6. The ultra-high-speed motor adaptive balancing front cover according to claim 2, characterized in that: The outer wall of the front cover shell (5) is provided with a contact portion (11), the surface of the contact portion (11) is polished, and the surface of the contact portion (11) is provided with an avoidance groove (9).

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