Anti-interference brushless motor

Abstract

The utility model discloses an anti-interference brushless motor. The anti-interference brushless motor comprises a housing, an annular baffle plate and a control panel. A driving part is arranged in the shell, and a through hole is formed in the lower end face of the shell. A rotating shaft of the driving component penetrates through the through hole and is rotationally connected to the shell, an induction magnetic ring is arranged in the through hole and connected with the rotating shaft, a limiting ring is arranged on the lower end face of the shell, and the limiting ring and the through hole are coaxially arranged. The annular baffle is arranged on the limiting ring in a sleeving mode and used for conducting magnetism. The control panel is located on the lower side of the shell and electrically connected with the driving part, and the control panel is provided with a sensor used for detecting the induction magnetic ring. The annular baffle can absorb a magnetic field generated by the control panel to prevent the magnetic field generated by the control panel from interfering with detection of the sensor on the induction magnetic ring. Meanwhile, the limiting ring can weaken interference of the annular baffle to the induction magnetic ring, and the magnetic field stability of the induction magnetic ring is improved; the annular baffle plate can also absorb the magnetic field exposed by the driving part to avoid interference on the sensor.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to an anti-interference brushless motor. Background Art

[0002] At present, the existing brushless motor needs to be driven by an ECU control board when working. The large current required to drive the ECU control board will generate a magnetic field, which will interfere with the sensor receiving the signal of the inductive magnetic ring, such as an inductive sensor, etc., which may easily cause the motor to fail to operate or issue wrong instructions leading to misoperation. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model proposes an anti-interference brushless motor.

[0004] The utility model provides an anti-interference brushless motor, the anti-interference brushless motor comprising:

[0005] A housing, wherein a driving component is arranged in the housing, a through hole is arranged on the lower end surface of the housing, a rotating shaft of the driving component is passed through the through hole and is rotatably connected to the housing, an induction magnetic ring is arranged in the through hole, the induction magnetic ring is connected to the rotating shaft, a limiting ring is arranged on the lower end surface of the housing, and the limiting ring is coaxially arranged with the through hole;

[0006] An annular baffle, sleeved on the limiting ring and relatively fixed to the limiting ring, the annular baffle is used for magnetic conduction;

[0007] A control board is located at the lower side of the shell, the control board is electrically connected to the driving component, and the control board is provided with a sensor for detecting the induction magnetic ring, and the sensor is located directly below the induction magnetic ring.

[0008] According to the anti-interference brushless motor of the embodiment of the utility model, there are at least the following technical effects: the large current required by the control board when driving will generate a magnetic field, and the annular baffle can absorb the magnetic field generated by the control board to avoid interfering with the sensor's detection of the induction magnetic ring; at the same time, because the annular baffle is sleeved on the limit ring, the limit ring can weaken the interference of the annular baffle on the induction magnetic ring and improve the magnetic field stability of the induction magnetic ring; the annular baffle can also absorb the magnetic field leaked by the driving component to avoid interfering with the sensor.

[0009] According to some embodiments of the present utility model, the driving component includes a rotor, a stator and the rotating shaft, the stator is sleeved on the rotor, and the rotating shaft passes through the rotor.

[0010] According to some embodiments of the present utility model, the limiting ring and the annular baffle are fixedly connected by riveting.

[0011] According to some embodiments of the utility model, the limiting ring is riveted so that the lower end of the limiting ring is bent away from the axis of the limiting ring to form a bending portion, and the bending portion abuts against the lower end of the annular baffle to limit the movement of the annular baffle.

[0012] According to some embodiments of the utility model, a plurality of riveted grooves are provided on the lower end surface of the shell, and the plurality of riveted grooves are circumferentially distributed around the axial direction of the annular baffle plate. A riveted part is provided in the riveted grooves and the annular baffle plate is pressed by riveting.

[0013] According to some embodiments of the present utility model, the outer peripheral wall of the limiting ring and the inner peripheral wall of the annular baffle are bonded by glue so that the annular baffle and the limiting ring are fixedly connected.

[0014] According to some embodiments of the present utility model, the annular baffle is fixedly connected to the limiting ring by bolts.

[0015] According to some embodiments of the utility model, the shell includes a casing and a base, the casing and the base are fixedly connected by bolts, the limiting ring is arranged on the base, and the base and the annular baffle are integrally injection molded.

[0016] According to some embodiments of the present utility model, a coupling is fixedly connected to the upper end of the rotating shaft.

[0017] According to some embodiments of the utility model, a countersunk hole is provided at the lower end of the rotating shaft, and a convex column is provided at the upper end of the induction magnetic ring, and the convex column is inserted into the countersunk hole.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic diagram of the structure of the anti-interference brushless motor of some embodiments of the utility model;

[0021] Figure 2 is a cross-sectional view of an anti-interference brushless motor of some embodiments of the utility model;

[0022] Figure 3 is a schematic structural diagram of the anti-interference brushless motor of some embodiments of the utility model from another angle;

[0023] Figure 4It is a schematic diagram of the connection between the limit ring and the annular baffle in some embodiments of the utility model.

[0024] Figure Number:

[0025] Shell 100, housing 110, base 120, through hole 121, induction magnetic ring 130, limit ring 140, bending portion 141, driving component 150, rotating shaft 151, rotor 152, stator 153, coupling 160, countersunk hole 170, protruding column 180;

[0026] An annular baffle 200 , a control plate 210 , a sensor 220 , and a riveting groove 230 . DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "above", "below", "within" etc. are understood to include the number.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings.

[0032] According to some embodiments of the present invention, referring to Figures 1 to 4The anti-interference brushless motor includes a housing 100, an annular baffle 200 and a control board 210. A driving component 150 is arranged in the housing 100, and a through hole 121 is arranged on the lower end surface of the housing 100, and the through hole 121 is connected to the inner cavity of the housing 100. The rotating shaft 151 of the driving component 150 is passed through the through hole 121 and is rotatably connected to the housing 100 through a bearing. An induction magnetic ring 130 is arranged in the through hole 121, and the induction magnetic ring 130 is connected to the rotating shaft 151. The lower end surface of the housing 100 extends downward to form a limit ring 140, and the limit ring 140 is coaxially arranged with the through hole 121. The annular baffle 200 is sleeved on the limit ring 140, and the annular baffle 200 is made of magnetic conductive material and is used for magnetic conductivity. The control board 210 is located at the lower side of the housing 100 . The control board 210 is electrically connected to the driving component 150 . The control board 210 is provided with a sensor 220 . The sensor 220 is used to detect the induction magnetic ring 130 . The sensor 220 is located directly below the induction magnetic ring 130 .

[0033] It is understandable that the large current required by the control board 210 when driving will generate a magnetic field, and the annular baffle 200 can absorb the magnetic field generated by the control board 210 to prevent the magnetic field generated by the control board 210 from interfering with the detection of the induction magnetic ring 130 by the sensor 220. At the same time, since the annular baffle 200 is sleeved on the limit ring 140, the limit ring 140 can reduce the interference of the annular baffle 200 on the induction magnetic ring 130 and improve the magnetic field stability of the induction magnetic ring 130; the annular baffle 200 can also absorb the magnetic field leaked by the driving component 150 to avoid interfering with the sensor 220.

[0034] It should be noted that the driving component 150 includes a rotor 152, a stator 153 and a rotating shaft 151. The stator 153 is sleeved on the rotor 152, and the rotating shaft 151 passes through the rotor 152. The annular baffle 200 can absorb the magnetic field leaked by the coil of the stator 153.

[0035] According to some embodiments of the present invention, the limiting ring 140 and the annular baffle 200 are fixedly connected by riveting.

[0036] Preferably, refer to Figure 4 The limiting ring 140 is riveted so that the lower end of the limiting ring 140 is bent away from the axis of the limiting ring 140 to form a bending portion 141, and the bending portion 141 abuts against the lower end of the annular baffle 200 to limit the movement of the annular baffle 200, and the upper end of the bending portion 141 cooperates with the lower end of the shell 100 to limit the movement of the annular baffle 200 in the up and down directions.

[0037] Preferably, refer to Figure 3The lower end surface of the shell 100 is provided with a plurality of riveting grooves 230, and the plurality of riveting grooves 230 are circumferentially distributed around the axial direction of the annular baffle 200. The riveting parts are arranged in the riveting grooves 230. The riveting parts are deformed by riveting to press the annular baffle 200, so that the annular baffle 200 is tightly attached to the limiting ring 140.

[0038] Preferably, the outer circumferential wall of the limiting ring 140 and the inner circumferential wall of the annular baffle 200 are bonded by glue so that the annular baffle 200 and the limiting ring 140 are fixedly connected.

[0039] Preferably, the annular baffle 200 is fixedly connected to the limiting ring 140 by bolts.

[0040] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The housing 100 includes a casing 110 and a base 120. The casing 110 is located above the base 120, and the casing 110 and the base 120 are fixedly connected by bolts. When the interior of the casing 100 needs to be repaired, the casing 110 and the base 120 are separated by unscrewing the bolts for easy repair.

[0041] Preferably, the limiting ring 140 is arranged on the base 120, and the base 120 and the limiting ring 140 are an integral injection molded part. During the injection molding process, the annular baffle 200 is placed in the mold so that the base 120 and the annular baffle 200 are injection molded as a whole, so that the annular baffle 200 and the limiting ring 140 are relatively fixed.

[0042] According to some embodiments of the present invention, referring to Figure 2 The upper end of the rotating shaft 151 is fixedly connected with a coupling 160. The coupling 160 is used to connect the shaft of the external driving member.

[0043] According to some embodiments of the present invention, referring to Figure 2 A countersunk hole 170 is provided at the lower end of the rotating shaft 151, and a protruding column 180 is provided at the upper end of the induction magnetic ring 130. The protruding column 180 is inserted into the countersunk hole 170. When the rotating shaft 151 rotates, the protruding column 180 can be driven to rotate, thereby driving the induction magnetic ring 130 to rotate.

[0044] In the description of this specification, the description with reference to the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anti-interference brushless motor, characterized in that: include: A housing (100), wherein a driving component (150) is arranged in the housing (100), a through hole (121) is arranged on the lower end surface of the housing (100), a rotating shaft (151) of the driving component (150) is passed through the through hole (121) and is rotatably connected to the housing (100), an induction magnetic ring (130) is arranged in the through hole (121), the induction magnetic ring (130) is connected to the rotating shaft (151), and a limiting ring (140) is arranged on the lower end surface of the housing (100), and the limiting ring (140) is coaxially arranged with the through hole (121); an annular baffle (200), sleeved on the limiting ring (140) and relatively fixed to the limiting ring (140), the annular baffle (200) being used for magnetic conduction; A control board (210) is located at the lower side of the housing (100), the control board (210) is electrically connected to the driving component (150), and the control board (210) is provided with a sensor (220) for detecting the induction magnetic ring (130), and the sensor (220) is located directly below the induction magnetic ring (130).

2. The anti-interference brushless motor according to claim 1, characterized in that: The driving component (150) comprises a rotor (152), a stator (153) and the rotating shaft (151); the stator (153) is sleeved on the rotor (152), and the rotating shaft (151) passes through the rotor (152).

3. The anti-interference brushless motor according to claim 1, characterized in that: The limiting ring (140) and the annular baffle (200) are fixedly connected by riveting.

4. The anti-interference brushless motor according to claim 3, characterized in that: The limiting ring (140) is riveted so that the lower end of the limiting ring (140) is bent away from the axis of the limiting ring (140) to form a bent portion (141), and the bent portion (141) abuts against the lower end of the annular baffle (200) to limit the movement of the annular baffle (200).

5. The anti-interference brushless motor according to claim 3, characterized in that: The lower end surface of the shell (100) is provided with a plurality of riveting grooves (230), the plurality of riveting grooves (230) are circumferentially distributed around the axis direction of the annular baffle (200), and the riveting parts are arranged in the riveting grooves (230) and the annular baffle (200) is pressed by riveting.

6. The anti-interference brushless motor according to claim 1, characterized in that: The outer peripheral wall of the limiting ring (140) and the inner peripheral wall of the annular baffle (200) are bonded by glue so that the annular baffle (200) and the limiting ring (140) are fixedly connected.

7. The anti-interference brushless motor according to claim 1, characterized in that: The annular baffle (200) is fixedly connected to the limiting ring (140) by means of bolts.

8. The anti-interference brushless motor according to claim 7, characterized in that: The housing (100) comprises a casing (110) and a base (120); the casing (110) and the base (120) are fixedly connected by bolts; the limiting ring (140) is arranged on the base (120); and the base (120) and the annular baffle (200) are integrally injection molded.

9. The anti-interference brushless motor according to claim 1, characterized in that: The upper end of the rotating shaft (151) is fixedly connected with a coupling (160).

10. The anti-interference brushless motor according to claim 1, characterized in that: A countersunk hole (170) is provided at the lower end of the rotating shaft (151), and a convex column (180) is provided at the upper end of the induction magnetic ring (130), and the convex column (180) is inserted into the countersunk hole (170).

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