Brushless motor structure

Abstract

The utility model discloses a brushless motor structure which comprises a motor stator, a motor middle pipe is arranged on the inner side of the motor stator, a cavity is arranged in the motor middle pipe, a sol connecting layer is arranged on the bottom surface of the cavity of the motor middle pipe, and an oil blocking protective gasket is installed on the upper surface of the sol connecting layer. The brushless motor structure is provided with the sol connecting layer and the oil-resistant protective gasket, so that when the device works, ink leakage is prevented through the oil-resistant protective gasket, a bearing system is effectively protected, and adverse effects of dust and ink on motor operation are prevented, and the sol connecting layer fixes the oil-resistant protective gasket, so that the sealing performance of the motor is further enhanced, and the service life of the motor is prolonged. The contact area is increased through the protrusions on the surface of the sol connecting layer, then friction force is improved, the oil-resistant protective gasket is fastened, the connecting stability of the oil-resistant protective gasket and the bearing body is improved through the buckles on the surface of the oil-resistant protective gasket, and the oil-resistant protective gasket is prevented from being loosened due to vibration or external force in the running process of a motor.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, in particular to a brushless motor structure. Background Art

[0002] A brushless motor, also known as a brushless DC motor, is a motor without brushes and a commutator. It uses electronic commutation technology to replace the mechanical brushes and commutator of a traditional brushed motor. Its working principle is based on the law of electromagnetic induction. The stator winding generates a rotating magnetic field, causing the rotor permanent magnet to rotate under the action of the magnetic field force. Specifically, the stator winding of the motor is energized in a certain sequence through an electronic controller, and the magnetic field generated changes continuously, thereby pulling the rotor permanent magnet to rotate. The stator of a three-phase brushless motor has a three-phase winding. By controlling the energization sequence and time of the three-phase winding, the rotor can rotate continuously. Since there is no friction loss between the brushes and the commutator, the efficiency of the brushless motor is relatively high. In some application scenarios, its efficiency can reach more than 90%, which can effectively reduce energy consumption.

[0003] The existing brushless motor structure generally blocks the ink by setting an oil baffle. Although the oil baffle can prevent ink leakage, it may age and deform with the increase of usage time and the change of motor temperature, causing the oil baffle to loosen and fail, thereby increasing the risk of ink leakage, which is not conducive to the normal use of the motor and reduces its service life and practicality. Utility Model Content

[0004] The purpose of the present utility model is to provide a brushless motor structure to solve the problem of the existing brushless motor structure proposed in the above background technology, which generally blocks the ink by setting an oil-blocking sheet. However, although the oil-blocking sheet can prevent the ink from leaking, as the use time increases and the temperature of the motor changes, the oil-blocking sheet may age or deform, resulting in an increased risk of ink leakage.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a brushless motor structure, comprising a motor stator, an inner side of which is provided with a motor middle tube, a cavity is provided inside the motor middle tube, and a sol connecting layer is provided on the bottom surface of the motor middle tube cavity, an oil-blocking protective gasket is installed on the upper surface of the sol connecting layer, a positioning installation groove is provided on the inner wall of the cavity at the upper end of the motor middle tube, a bearing body is installed on the inner wall of the positioning installation groove, an upper sealing cover is fixedly connected to the upper end of the motor middle tube, a PCB connecting plate is fixedly provided on the upper surface of the motor stator, a slot is provided on the outer surface of the upper end of the motor middle tube, and a positioning guide cover is provided on the inner wall of the motor middle tube slot.

[0006] Preferably, the motor stator and the motor middle tube form a rotational connection, the sol connecting layer is annular in design, and the oil-blocking protective gasket is annular in design.

[0007] By adopting the above technical solution, when using the present device, the oil-blocking protective gasket is easily connected via the sol connecting layer, so that the annular design of the sol connecting layer is precisely connected to the annular design of the oil-blocking protective gasket.

[0008] Preferably, the surface of the sol connecting layer is provided with arc-shaped protrusions, and the surface of the sol connecting layer is sunken in design, the outer periphery of the upper surface of the oil-blocking protective gasket is provided with a buckle, and the buckle of the oil-blocking protective gasket forms a snap connection with the bearing body.

[0009] By adopting the above-mentioned technical solution, when using this device, the arc-shaped protrusions arranged on the surface of the sol connecting layer are conducive to increasing the contact area with the oil-proof protective gasket, thereby improving the connection stability of the sol connecting layer and the oil-proof protective gasket by increasing the friction force, and the buckle on the upper surface of the oil-proof protective gasket effectively clamps and fixes the bearing body, thereby improving the stability of the oil-proof protective gasket during operation.

[0010] Preferably, the inner wall of the positioning and mounting groove is designed to be inclined, and the width of the positioning and mounting groove is greater than the width of the bearing body, and the bearing body is connected to the oil-blocking protective gasket.

[0011] By adopting the above technical solution, when the device is used, the concentricity of the bearing is improved by positioning the mounting groove, so that the motor runs more smoothly.

[0012] Preferably, the PCB connecting plate is annular in design, and the opening width of the PCB connecting plate is greater than the width of the motor middle tube.

[0013] By adopting the above technical solution, when the device is used, the annular design of the PCB connecting plate facilitates the extension of the motor middle tube.

[0014] Preferably, an insulating barrier layer is fixedly connected to the outer lower surface of the positioning guide cover, and an oil storage tank is provided on the inner wall of the motor middle tube cavity.

[0015] By adopting the above technical solution, when the device is used, the insulating partition layer is integrally formed, thereby forming a partition between the motor and the metal part, thereby achieving the effect of insulation protection.

[0016] Preferably, the vertical cross-section of the positioning guide cover is L-shaped, the insulating partition layer is annular, and the oil storage tank is connected to the positioning installation slot.

[0017] By adopting the above technical solution, when the device is used, oil is stored in the oil storage tank to ensure oil lubrication during long-term operation, which is beneficial to the stable operation of the motor.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the brushless motor structure:

[0019] 1. A sol connecting layer and an oil-blocking protective gasket are provided. When the device is working, the oil-blocking protective gasket prevents ink leakage, effectively protects the bearing system, and prevents dust and ink from adversely affecting the operation of the motor. The sol connecting layer fixes the oil-blocking protective gasket, further enhancing the sealing performance of the motor. The protrusions on the surface of the sol connecting layer increase the contact area and thus the friction, thereby tightening the oil-blocking protective gasket. The buckle on the surface of the oil-blocking protective gasket increases the stability of its connection with the bearing body, preventing the oil-blocking protective gasket from loosening due to vibration or external force during the operation of the motor.

[0020] 2. An insulating barrier layer and an upper sealing cover are provided. When the device is in operation, the insulating barrier layer is integrally formed with the rubber layer to form a barrier between the motor and the metal parts, which plays an insulating role and ensures the safe use of the motor. The upper sealing cover is dust-proof and oil-proof, preventing dust from entering the bearing system and ensuring that ink does not leak out, further improving the practicality of the device.

[0021] 3. An oil storage tank and a motor center tube are provided. When the device is working, the oil storage tank is provided to achieve the purpose of oil storage, thereby ensuring that the motor will not be short of oil during long-term operation. The positioning groove is used to strengthen the bearing tightness, make the bearing concentricity more accurate, and improve the stability of the motor operation, so that the brushless motor can operate more stably and efficiently in various application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0024] In the figure: 1. Motor stator; 2. Motor middle tube; 3. Sol-gel connection layer; 4. Oil-blocking protective gasket; 5. Positioning and mounting groove; 6. Bearing body; 7. Upper sealing cover; 8. PCB connection board; 9. Positioning guide cover; 10. Insulation barrier layer; 11. Oil storage tank. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-2 The utility model provides a technical solution: a brushless motor structure, including a motor stator 1, a motor middle tube 2, a sol connecting layer 3, an oil-proof protective gasket 4, a positioning installation groove 5, a bearing body 6, an upper sealing cover 7, a PCB connecting plate 8, a positioning guide cover 9, an insulating partition layer 10 and an oil storage tank 11. The motor stator 1 is provided with a motor middle tube 2 on its inner side. The motor stator 1 and the motor middle tube 2 form a rotational connection. The sol connecting layer 3 is an annular design, and the oil-proof protective gasket 4 is an annular design. When using this device, the motor middle tube 2 is first installed in the cavity of the motor stator 1, and the sol connecting layer 3 is provided to fix the oil-proof protective gasket 4. The bearing body 6 is installed in the positioning installation groove 5 in the motor middle tube 2, and finally the motor middle tube 2 is closed by the upper sealing cover 7.

[0027] A cavity is provided inside the motor middle tube 2, and a sol connecting layer 3 is provided on the bottom surface of the cavity of the motor middle tube 2, and an oil-proof protective gasket 4 is installed on the upper surface of the sol connecting layer 3. A positioning installation groove 5 is provided on the inner wall of the cavity at the upper end of the motor middle tube 2, and an arc-shaped protrusion is provided on the surface of the sol connecting layer 3, and the surface of the sol connecting layer 3 is a sunken design. A buckle is provided on the periphery of the upper surface of the oil-proof protective gasket 4, and the buckle of the oil-proof protective gasket 4 is snap-fitted with the bearing body 6. The contact area with the oil-proof protective gasket 4 is increased through the protrusion on the surface of the sol connecting layer 3, thereby increasing the friction force, which is beneficial to the connection stability of the sol connecting layer 3 and the oil-proof protective gasket 4, and the buckle on the outer upper surface of the oil-proof protective gasket 4 is convenient for clamping the bearing body 6, thereby increasing the tightness of the bearing body 6 and the oil-proof protective gasket 4, and preventing the oil-proof protective gasket 4 from loosening due to vibration or external force during the operation of the motor.

[0028] A bearing body 6 is installed on the inner wall of the positioning and mounting groove 5, an upper sealing cover 7 is fixedly connected to the upper end of the motor middle tube 2, and a PCB connecting plate 8 is fixedly provided on the upper surface of the motor stator 1. The inner wall of the positioning and mounting groove 5 is inclined, and the width of the positioning and mounting groove 5 is greater than the width of the bearing body 6. The bearing body 6 is connected to the oil-blocking protective gasket 4. The PCB connecting plate 8 is annular in design, and the opening width of the PCB connecting plate 8 is greater than the width of the motor middle tube 2. By setting the positioning and mounting groove 5, the tightness of the bearing body 6 is reinforced, the concentricity of the bearing body 6 is made more accurate, the stability of the motor operation is improved, and the motor operation is more stable.

[0029] A slot is provided on the outer surface of the upper end of the motor middle tube 2, and a positioning guide cover 9 is provided on the inner wall of the slot of the motor middle tube 2. The outer lower surface of the positioning guide cover 9 is fixedly connected with an insulating partition layer 10. An oil storage tank 11 is provided on the inner wall of the cavity of the motor middle tube 2. The vertical cross-section of the positioning guide cover 9 is L-shaped, and the insulating partition layer 10 is annular. The oil storage tank 11 is connected with the positioning mounting slot 5. Through the one-piece molding of the insulating partition layer 10, an interlayer is formed between the motor and the metal part, which plays an insulating role and ensures the safety of the motor. The combination of the upper sealing cover 7 and the oil-proof protective gasket 4 can effectively protect the bearing system and prevent dust and ink from adversely affecting the operation of the motor. The existence of the oil storage tank 11 ensures the lubrication needs of the motor during long-term operation, reduces wear and failure caused by lack of oil, and the fixation of the oil-proof protective gasket 4 by the sol connecting layer 3 further enhances the sealing of the motor.

[0030] Working principle: When using the brushless motor structure, the motor middle tube 2 is installed through the motor stator 1, and then a sol connecting layer 3 is set in the motor middle tube 2 to fix the oil-proof protective gasket 4, and the bearing body 6 is positioned and installed through the positioning installation groove 5, and the oil-proof protective gasket 4 is connected to the bearing body 6 through a snap buckle to improve stability, and the motor middle tube 2 is closed by the upper sealing cover 7, and an insulation barrier layer 10 is used to form an insulation layer to achieve insulation. The oil storage tank 11 is used to facilitate long-term guarantee of the motor's lubrication needs, and the sol connecting layer 3 and the oil-proof protective gasket 4 are used to improve the dust and oil resistance and increase the sealing, so that the brushless motor can operate more stably and efficiently in various application scenarios, thereby increasing the overall practicality.

[0031] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A brushless motor structure, comprising a motor stator (1), inside of which a motor middle tube (2) is provided, characterized in that: The motor middle tube (2) is provided with a cavity inside, and a sol connecting layer (3) is provided on the bottom surface of the cavity of the motor middle tube (2), an oil-blocking protective gasket (4) is installed on the upper surface of the sol connecting layer (3), a positioning installation groove (5) is provided on the inner wall of the cavity at the upper end of the motor middle tube (2), a bearing body (6) is installed on the inner wall of the positioning installation groove (5), an upper sealing cover (7) is fixedly connected to the upper end of the motor middle tube (2), a PCB connecting plate (8) is fixedly provided on the upper surface of the motor stator (1), a slot is provided on the outer surface of the upper end of the motor middle tube (2), and a positioning guide cover (9) is provided on the inner wall of the slot of the motor middle tube (2).

2. The brushless motor structure according to claim 1, characterized in that: The motor stator (1) and the motor middle tube (2) are rotationally connected, the sol connecting layer (3) is annular in design, and the oil-blocking protective gasket (4) is annular in design.

3. The brushless motor structure according to claim 1, characterized in that: The surface of the sol connecting layer (3) is provided with an arc-shaped protrusion, and the surface of the sol connecting layer (3) is designed to be sunken. The outer periphery of the upper surface of the oil-blocking protective gasket (4) is provided with a buckle, and the buckle of the oil-blocking protective gasket (4) forms a snap connection with the bearing body (6).

4. The brushless motor structure according to claim 1, characterized in that: The inner wall of the positioning installation groove (5) is designed to be inclined, and the width of the positioning installation groove (5) is greater than the width of the bearing body (6), and the bearing body (6) is connected to the oil-blocking protective gasket (4).

5. The brushless motor structure according to claim 1, characterized in that: The PCB connecting plate (8) is designed to be annular, and the opening width of the PCB connecting plate (8) is greater than the width of the motor middle tube (2).

6. The brushless motor structure according to claim 1, characterized in that: An insulating barrier layer (10) is fixedly connected to the outer lower surface of the positioning guide cover (9), and an oil storage tank (11) is provided on the inner wall of the cavity of the motor middle tube (2).

7. The brushless motor structure according to claim 6, characterized in that: The positioning guide The vertical cross section of the cover (9) is L-shaped, and the insulating barrier layer (10) is annular. The oil storage tank (11) is communicated with the positioning installation tank (5).

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