Hall mounting structure of brushless driving wheel motor
By installing a magnetic ring on the motor shaft of the brushless drive wheel motor and installing the Hall plate on the Hall support on the outside of the installation end cover, the cumbersome problem of Hall component replacement in the prior art is solved, and the replacement process is simplified and convenient.
Patent Information
- Application Number
- CN202422206529.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing brushless drive wheel motor Hall installation structure is more cumbersome when replacing Hall components, and the end cover and Hall plate need to be removed.
The replacement process is simplified by installing the magnetic ring on the motor shaft and mounting the Hall plate on the Hall support on the outside of the mounting end cover, allowing the Hall plate to be removed directly from the mounting end cover.
Simplifies the replacement process of Hall components, reduces disassembly steps, improves the convenience of replacement, and avoids zeroing operations.
Smart Images
Figure CN223039873U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of drive wheel motors, and particularly to a Hall mounting structure for a brushless drive wheel motor. Background Art
[0002] A Hall element is a semiconductor magnetic electrical device that operates based on the Hall effect and is widely used in brushless drive wheel motors to detect the shaft position of the brushless drive wheel motor or to detect the rotational speed of the brushless drive wheel motor.
[0003] The existing Hall mounting structure for a brushless drive wheel motor generally includes a Hall plate welded and fixed to the inner cavity of the motor housing. The Hall plate is annular and located outside the end of the motor rotor. Hall elements are provided on the Hall plate, so as to be able to detect the shaft position and rotational speed of the motor. Since the Hall plate is welded and fixed in the inner cavity of the motor housing, usually welded and fixed to the end face of the motor stator, when a Hall element fails and needs to be replaced or maintained, the Hall plate needs to be desoldered first, and then the Hall plate is removed from the motor housing. After replacing the Hall element, the Hall plate is welded and fixed to the end of the motor stator.
[0004] Regarding the above related technologies, the inventor believes that replacing the Hall element in the above Hall mounting structure for a brushless drive wheel motor is relatively cumbersome. Summary of the Utility Model
[0005] In order to improve the situation that replacing the Hall element in the Hall mounting structure for a brushless drive wheel motor is relatively cumbersome, the present application provides a Hall mounting structure for a brushless drive wheel motor.
[0006] The Hall mounting structure for a brushless drive wheel motor provided by the present application adopts the following technical solutions:
[0007] A Hall mounting structure for a brushless drive wheel motor includes a mounting end cover installed at the end of the motor housing, a Hall support installed on the outer side surface of the mounting end cover, a Hall plate installed on the Hall support, and a magnetic ring installed at the end of the motor shaft and having the same polarity as the motor rotor; the Hall plate has Hall elements arranged at circumferential intervals, the mounting end cover, the Hall support, and the Hall plate all have through holes for the motor shaft to pass through, and the magnetic ring is arranged on one side of the Hall elements.
[0008] By adopting the above technical solution, the magnetic poles of the magnetic ring are kept consistent with those of the motor rotor, so that the magnetic field change during the rotation of the motor rotor is kept consistent with the magnetic field change during the rotation of the magnetic ring in the circumferential direction, thereby enabling the Hall element conventionally arranged outside the motor rotor to be transferred and arranged outside the magnetic ring. In the above Hall mounting structure of the brushless drive wheel motor, by mounting the Hall plate on the outside of the mounting end cover, when replacing the Hall element, it is not necessary to disassemble the mounting end cover and then remove the Hall plate located in the inner cavity of the motor housing. The Hall plate can be directly removed from the mounting end cover, making it more convenient to replace the Hall element on the brushless drive wheel motor.
[0009] Optionally, the Hall support is provided with an arrangement groove for mounting the Hall plate, and the Hall plate is fixed to the Hall support by screws.
[0010] By adopting the above technical solution, the mounting structure of the Hall plate on the Hall support is disclosed, making it more convenient to replace the Hall element on the brushless drive wheel motor. Moreover, after replacing the Hall element, the circumferential angle of the Hall plate relative to the motor rotor does not change, that is, it is not necessary to zero the Hall element.
[0011] Optionally, the Hall support is rotatably mounted on the mounting end cover, and the axis of rotation of the Hall support coincides with the axis of the motor shaft; the Hall support is provided with an arc-shaped sliding groove penetrating through both end faces, and the axis of the arc-shaped sliding groove coincides with the axis of the motor shaft. The mounting end cover is also threadedly mounted with a locking bolt that cooperates with the arc-shaped sliding groove and presses the Hall support against the mounting end cover.
[0012] By adopting the above technical solution, the Hall support is rotatably mounted on the mounting end cover, and the two are locked through the cooperation of the arc-shaped sliding groove and the locking bolt. When initially installing the Hall support with the Hall plate, the circumferential angle of the Hall plate can be adjusted by rotating the Hall support, thereby realizing zeroing of the Hall element on the Hall plate.
[0013] Optionally, the outer side wall of the mounting end cover has a positioning convex ring arranged coaxially with the motor shaft, and the Hall support has a rotation through hole for cooperating with the positioning convex ring, and the motor shaft passes through the rotation through hole.
[0014] By adopting the above technical solution, the specific cooperation structure between the mounting end cover and the Hall support is disclosed, and this structure enables a high coaxiality between the axis of rotation of the Hall support and the axis of the motor shaft, facilitating zeroing of the Hall element during the initial installation.
[0015] Optionally, the Hall support has two such arc-shaped sliding grooves, and the two arc-shaped sliding grooves are symmetrically arranged with respect to the axis of rotation of the Hall support.
[0016] By adopting the above technical solution, the cooperation of the two groups of arc-shaped sliding grooves and the locking bolts makes the locking effect of the Hall support more ideal.
[0017] Optionally, an installation groove for rotatably arranging the Hall support is provided on the outer side surface of the installation end cover.
[0018] By adopting the above technical solution, it helps to position and install the Hall support on the installation end cover, and improves the matching strength between the installation end cover and the Hall support.
[0019] Optionally, the installation end cover is further provided with a protective cover, which covers the magnetic ring, the Hall support and the Hall plate, and the protective cover is installed on the installation end cover by screws.
[0020] By adopting the above technical solution, since the Hall installation structure of the brushless drive wheel motor is applied to the brush drive wheel motor, the brush drive wheel motor is likely to collide with other objects to a certain extent during use. Therefore, by providing a protective cover, it can protect the magnetic ring, the Hall support and the Hall plate, and reduce the probability of damage to the magnetic ring, the Hall support and the Hall plate due to impact. Moreover, the protective cover is locked on the protective convex ring of the installation end cover by screws, and it is relatively convenient to disassemble and assemble the protective cover.
[0021] Optionally, the installation end cover is provided with a protective convex ring inserted into the protective cover, and the protective cover is provided with a sealing ring groove corresponding to the protective convex ring on the inner wall and a sealing member is arranged in the sealing ring groove.
[0022] By adopting the above technical solution, the cooperation of the protective convex ring and the protective cover helps to position and install the protective cover. The setting of the sealing ring groove and the sealing member helps to ensure the waterproof performance of the brushless drive wheel motor.
[0023] Optionally, the installation end cover is provided with an annular bearing seat on the inner side.
[0024] By adopting the above technical solution, a bearing for supporting the motor rotating shaft can be installed on the annular bearing seat, which helps to align the installation end cover and the motor rotating shaft.
[0025] To sum up, the present application includes at least one of the following beneficial technical effects:
[0026] 1. A Hall installation structure, by arranging a magnetic ring installed on the motor rotating shaft and installing the Hall plate on the Hall support on the outer side of the installation end cover, when replacing the Hall element, it is not necessary to disassemble the installation end cover and then remove the Hall plate located in the inner cavity of the motor housing. The Hall plate can be directly removed from the installation end cover, making it more convenient to replace the Hall element on the brushless drive wheel motor;
[0027] 2. The Hall plate is installed on the Hall support by screws, enabling zero adjustment of the Hall element through the rotation of the Hall support. When the Hall plate is removed from the Hall support, it can be directly reinstalled on the Hall support after maintenance without the need for re-zero adjustment.
[0028] 3. By providing a protective cover to enclose the magnetic ring, Hall support, and Hall plate, the probability of damage to the magnetic ring, Hall support, and Hall plate due to impact is reduced. Description of the Drawings
[0029] Figure 1 is an exploded schematic view of the brushless drive wheel motor in the embodiment of the present application.
[0030] Figure 2 is a cross-sectional schematic view of the Hall installation structure of the brushless drive wheel motor in the embodiment of the present application.
[0031] Figure 3 is Figure 2 a partial enlarged schematic view of part A in
[0032] Figure 4 is a schematic view of the installation of the end cover in the embodiment of the present application.
[0033] Figure 5 is a schematic view of the structure of the brushless drive wheel motor in the embodiment of the present application when the protective cover is not installed at the end.
[0034] Figure 6 is an exploded mating schematic view of the Hall support and the Hall plate in the embodiment of the present application.
[0035] Figure 7 is Figure 2 a partial enlarged schematic view of part B in
[0036] Description of the Reference Numerals: 1, motor housing; 11, first annular groove; 2, motor rotor; 3, end cover; 31, sealing convex ring; 33, first sealing ring; 34, annular bearing seat; 35, first through hole; 36, positioning convex ring; 37, locking bolt; 38, protective convex ring; 39, installation groove; 4, Hall support; 41, rotating through hole; 43, arc-shaped sliding groove; 44, arrangement groove; 45, installation threaded hole; 5, Hall plate; 51, installation through hole; 52, arrangement through hole; 53, Hall element; 6, magnetic ring; 7, protective cover; 71, screw seat; 72, sealing ring groove; 73, seal; 8, motor shaft; 9, rotating bearing. Detailed Description of the Embodiment
[0037] The following further elaborates on the present application in conjunction with the attached Figures 1-7 drawings.
[0038] An embodiment of the present application discloses a Hall mounting structure for a brushless drive wheel motor, which is applied to a brushless drive wheel motor.
[0039] Referring to Figure 1 and Figure 2 , the Hall mounting structure of the brushless drive wheel motor includes a mounting end cover 3 installed at the end of the motor housing 1, a Hall support 4 installed on the outer side surface of the mounting end cover 3, a Hall plate 5 installed on the Hall support 4, and a magnetic ring 6 installed at the end of the motor rotating shaft 8 and having the same polarity as the motor rotor 2. Among them, the magnetic ring 6 is fixedly installed at the end of the motor rotating shaft 8 by glue. The motor rotor 2 has eight magnetic poles, and the magnetic ring 6 also has eight magnetic poles, and the magnetic poles of the magnetic ring 6 are arranged corresponding to the magnetic poles of the motor rotor 2.
[0040] Referring to Figure 2 and Figure 3 , the mounting end cover 3 is fixed to the end of the motor housing 1 by screws. The motor housing 1 is provided with a first annular groove 11 along the opening at the end. The mounting end cover 3 is provided with a sealing convex ring 31 that cooperates with the first annular groove 11. The height of the sealing convex ring 31 is less than the depth of the first annular groove 11, so that a sealing gap is formed between the end face of the sealing convex ring 31 and the bottom surface of the first annular groove 11. The brushless drive wheel motor is filled with sealant at the sealing gap, and after the sealant is cured, a first sealing ring 33 is formed to ensure the sealing effect at the joint of the mounting end cover 3 and the motor housing 1.
[0041] Referring to Figure 2 and Figure 4 , the mounting end cover 3 is further provided with an annular bearing seat 34 on the inner side. A rotary bearing 9 for rotatably supporting the motor rotating shaft 8 is provided at the annular bearing seat 34. The mounting end cover 3 is also provided with a first through hole 35 for arranging the motor rotating shaft 8. In this embodiment, the first through hole 35 is a circular hole and the axis of the first through hole 35 coincides with the axis of the motor rotating shaft 8. The diameter of the first through hole 35 is larger than the outer diameter of the magnetic ring 6, so that the magnetic ring 6 can pass through the first through hole 35, that is, the magnetic ring 6 can be first installed on the motor rotating shaft 8 and then assembled with the mounting end cover 3.
[0042] Referring to Figure 2 and Figure 4 , a positioning convex ring 36 is provided on the outer side wall of the mounting end cover 3 along the outer edge of the first through hole 35. The positioning convex ring 36 is a circular ring structure and is coaxially arranged with the motor rotating shaft 8. The Hall support 4 has a rotating through hole 41 that cooperates with the positioning convex ring 36, so that the Hall support 4 can rotate along the axis direction of the motor rotating shaft 8 on the mounting end cover 3. The mounting end cover 3 is also provided with a mounting groove 39 for rotatably arranging the Hall support 4 on the outer side wall.
[0043] Referring to Figure 5, To facilitate the circumferential locking of the Hall support 4, the Hall support 4 is provided with an arc-shaped sliding groove 43 penetrating both end faces, and the axis of the arc-shaped sliding groove 43 coincides with the axis of the motor rotating shaft 8. The mounting end cover 3 is also threadedly installed with a locking bolt 37 that cooperates with the arc-shaped sliding groove 43 and presses the Hall support 4 against the mounting end cover 3. In this embodiment, the Hall support 4 is provided with two arc-shaped sliding grooves 43, and the two arc-shaped sliding grooves 43 are symmetrically arranged about the rotation axis of the Hall support 4. The mounting end cover 3 is provided with locking bolts 37 arranged in one-to-one correspondence with the arc-shaped sliding grooves 43.
[0044] Referring to Figure 5 and Figure 6 , on the side of the Hall support 4 facing away from the mounting end cover 3, a layout groove 44 is provided for arranging the Hall plate 5. The Hall plate 5 is provided with two mounting through holes 51 for arranging screws, and the Hall support 4 is provided with mounting threaded holes 45 arranged in correspondence with the mounting through holes 51, so that the Hall plate 5 can be locked on the Hall support 4 by screws.
[0045] Referring to Figure 5 and Figure 6 , the middle part of the Hall plate 5 has a layout through hole 52 for the magnetic ring 6 to pass through and is coaxially arranged with the motor rotating shaft 8. Three Hall elements 53 are arranged on the side of the Hall plate 5 facing away from the mounting end cover 3, and the three Hall elements 53 are axially evenly arranged along the axis of the layout through hole 52. The three Hall elements 53 are arranged outside the magnetic ring 6 and can detect the rotation data of the magnetic ring 6, so as to detect the rotational speed and circumferential position of the motor rotor 2.
[0046] Referring to Figure 1 , the mounting end cover 3 is also provided with a protective cover 7 that covers the magnetic ring 6, the Hall support 4, and the Hall plate 5. The protective cover 7 is integrally in the shape of a square cover body, and screw seats 71 for cooperating with screws are provided at all four corners. The protective cover 7 is installed on the mounting end cover 3 by installing screws on the four screw seats 71.
[0047] Referring to Figure 2 and Figure 7 , the mounting end cover 3 is also provided with a protective convex ring 38 inserted into the protective cover 7. A sealing ring groove 72 corresponding to the protective convex ring 38 is provided inside the protective cover 7, and a sealing member 73 is arranged in the sealing ring groove 72. In this embodiment, the sealing member 73 is formed by curing the sealant coated in the sealing ring groove 72, thus realizing the sealing fit between the protective cover 7 and the mounting end cover 3.
[0048] The implementation principle of the Hall mounting structure of the brushless drive wheel motor in the embodiments of the present application is as follows: By providing a magnetic ring 6 mounted on the motor shaft 8, and keeping the magnetic poles of the magnetic ring 6 consistent with those of the motor rotor 2, the Hall plate 5 mounted on the outer side of the mounting end cover 3 can also detect the rotational speed and circumferential position of the motor shaft 8; and when replacing the Hall element 53, it is not necessary to disassemble the mounting end cover 3 from the motor housing 1 and then remove the Hall plate 5 located in the inner cavity of the motor housing 1. Instead, the Hall plate 5 can be directly removed from the mounting end cover 3. After replacing the Hall element 53 on the Hall plate 5, the Hall plate 5 is directly mounted on the Hall support 4 without the need for zero adjustment operation, making the replacement steps of the Hall element 53 of the brushless drive wheel motor simple and convenient.
[0049] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A brushless drive wheel motor Hall installation structure, characterized in that: The invention comprises a mounting end cover (3) mounted on the end of a motor housing (1), a Hall support (4) mounted on the outer side of the mounting end cover (3), a Hall plate (5) mounted on the Hall support (4), and a magnetic ring (6) mounted on the end of a motor shaft (8) and having the same polarity as the motor rotor (2); the Hall plate (5) has Hall elements (53) arranged at intervals in the circumferential direction, the mounting end cover (3), the Hall support (4) and the Hall plate (5) all have through holes for allowing the motor shaft (8) to pass through, and the magnetic ring (6) is arranged on one side of the Hall element (53).
2. A brushless drive wheel motor Hall installation structure according to claim 1, characterized in that: The Hall support (4) is provided with a layout groove (44) for installing the Hall plate (5), and the Hall plate (5) is fixed to the Hall support (4) by means of screws.
3. The brushless drive wheel motor Hall installation structure according to claim 1, characterized in that: The Hall support (4) is rotatably mounted on the mounting end cover (3), and the axis of rotation of the Hall support (4) coincides with the axis of the motor shaft (8); the Hall support (4) is provided with an arc-shaped slide groove (43) penetrating through both end faces, and the axis of the arc-shaped slide groove (43) coincides with the axis of the motor shaft (8); the mounting end cover (3) is also threadedly mounted with a locking bolt (37) that cooperates with the arc-shaped slide groove (43) and presses the Hall support (4) onto the mounting end cover (3).
4. The brushless drive wheel motor Hall installation structure according to claim 3, characterized in that: The outer side wall of the mounting end cover (3) has a positioning convex ring (36) coaxially arranged with the motor shaft (8), and the Hall support (4) has a rotating through hole (41) for cooperating with the positioning convex ring (36), and the motor shaft (8) passes through the rotating through hole (41).
5. The brushless drive wheel motor Hall installation structure according to claim 3, characterized in that: The Hall support (4) has two arc-shaped sliding grooves (43), and the two arc-shaped sliding grooves (43) are symmetrically arranged with respect to the rotation axis of the Hall support (4).
6. The brushless drive wheel motor Hall installation structure according to claim 3, characterized in that: The outer side surface of the mounting end cover (3) is provided with a mounting groove (39) for rotatably arranging the Hall support (4).
7. The brushless drive wheel motor Hall installation structure according to claim 1, characterized in that: The mounting end cover (3) is also provided with a protective cover (7), the protective cover (7) covers the magnetic ring (6), the Hall support (4) and the Hall plate (5), and the protective cover (7) is mounted on the mounting end cover (3) by means of screws.
8. The brushless drive wheel motor Hall installation structure according to claim 7, characterized in that: The mounting end cover (3) is provided with a protective convex ring (38) inserted into the protective cover (7), and the protective cover (7) is provided with a sealing ring groove (72) corresponding to the protective convex ring (38) on the inner wall, and a sealing member (73) is arranged in the sealing ring groove (72).
9. The brushless drive wheel motor Hall installation structure according to claim 1, characterized in that: The mounting end cover (3) is provided with an annular bearing seat (34) on the inner side.