Hub motor capable of preventing magnetic steel from falling off

Abstract

The utility model discloses a hub motor capable of preventing magnetic steel from falling off. The wheel hub motor comprises a wheel hub outer shell, a rotary transformer core, a reluctance type rotary transformer, a bearing, a stator core, an aluminum support and a base which are sequentially connected, a coil is arranged on the stator core, insulating plates are arranged on the two side edges of the stator core, and a plurality of magnetic steels are circumferentially distributed on the inner side wall of the wheel hub outer shell in a surrounding mode. A hub magnetic steel pressing plate assembly is installed on the back face of a hub outer shell and comprises a plurality of hub magnetic steel pressing plates, every two hub magnetic steel pressing plates are connected end to end, each hub magnetic steel pressing plate is provided with a plurality of first screw holes, and the back face of the hub outer shell is provided with a plurality of second screw holes corresponding to the first screw holes. A plurality of screws are arranged to be connected with the first screw holes and the second screw holes so that the hub magnetic steel pressing plate and the hub outer shell can be connected and fixed. The magnetic steel is protected in the hub outer shell and is prevented from being thrown away under the action of centrifugal force.

Description

Technical Field

[0001] This utility model relates to the field of hub motor technology, specifically to a hub motor with anti-magnetic steel detachment. Background Technology

[0002] Textile machinery uses electric motors during operation, and hub motors are one of the most common types. A Chinese utility model patent with publication number CN219980596U discloses a hub motor with a ventilation and heat dissipation structure, including a hub housing. A central connecting seat is located at the center of the hub housing, and the outer periphery of the central connecting seat is connected to the hub housing by several reinforcing ribs. A bearing is also housed within the hub housing, and the central connecting seat is connected to the inner ring of the bearing. Several magnets are evenly distributed on the inner sidewall of the hub housing. The outer ring of the bearing is connected to a stator structure, which includes a stator core. A coil is mounted on the stator core, and the coil is connected to the magnets... There are gaps between the steel sections. A connecting seat is located on the side of the wheel hub outer shell away from the reinforcing rib. The connecting seat is connected to the stator structure via an aluminum bracket. The aluminum bracket is a hollow cylinder with several evenly spaced arc-shaped guide grooves for ventilation on its inner wall. A fan blade is also installed on the central connecting seat, with the fan blade closer to the reinforcing rib. The arc-shaped guide grooves connect the two sides of the wheel hub outer shell. A heat dissipation protective net is located on the side of the reinforcing rib away from the aluminum bracket. A protective net cover is located on the outer side of the heat dissipation protective net, and the protective net cover has perforated areas for ventilation.

[0003] This utility model incorporates an aluminum bracket, which serves two purposes: stabilizing the structure and enhancing heat dissipation within the hub motor, facilitating heat dissipation and improving overall cooling efficiency. Simultaneously, fan blades are added to the bearings, moving with the hub housing to further enhance heat dissipation. The problem lies in the fact that the magnets in this design are typically fixed to the hub housing and stator core with glue. When the hub housing rotates at high speed, centrifugal force can easily cause the magnets to detach, posing a safety hazard. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a hub motor that surrounds and protects the magnets to prevent them from falling off.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hub motor with anti-magnetic steel detachment, comprising a hub housing, a resolver core, a reluctance rotary transformer, a bearing, a stator core, an aluminum bracket, and a base connected in sequence. A coil is provided on the stator core, and insulating plates are provided on both sides of the stator core. A plurality of magnets are arranged circumferentially around the inner wall of the hub housing. A hub magnet pressure plate assembly is installed on the back of the hub housing. The hub magnet pressure plate assembly includes a plurality of hub magnet pressure plates, with each pair of hub magnet pressure plates connected end-to-end. Each hub magnet pressure plate is provided with a plurality of first screw holes. The back of the hub housing is provided with a plurality of second screw holes corresponding to the first screw holes. A plurality of screws are used to connect and fix the hub magnet pressure plates to the hub housing by connecting the first screw holes and the second screw holes.

[0006] Preferably, each hub magnet pressure plate is provided with two first screw holes, which are respectively located at both ends of the hub magnet pressure plate.

[0007] Preferably, the outer arc surface of the hub magnet pressure plate is in contact with the outer wall surface of the hub housing.

[0008] Preferably, the radius of the inner arc surface of the hub magnet pressure plate is the same as the maximum radius of the stator core.

[0009] Compared with the prior art, this utility model has the following advantages: By setting a hub magnet pressure plate assembly on the back of the hub housing, this utility model blocks the only direction in which the magnet will fall off and fly away, preventing the magnet from being directly thrown away under the centrifugal force of high-speed rotation. Furthermore, the hub magnet pressure plate assembly is formed by splicing together in a combined manner, which facilitates installation and subsequent partial disassembly and reinstallation. Attached Figure Description

[0010] Figure 1 This is an isometric view of the first perspective of this utility model.

[0011] Figure 2 This is an isometric drawing of the wheel hub housing used in conjunction with the magnetic steel pressure plate assembly in this utility model.

[0012] Figure 3 This is an axonometric view of the second perspective of this utility model.

[0013] Figure 4 This is an exploded isometric view of this utility model.

[0014] Among them, 11-hub magnet pressure plate assembly, 12-hub magnet pressure plate, 13-screw, 21-hub housing, 31-stator core, 32-insulation plate, 33-base, 34-aluminum bracket, 35-bearing, 36-magnetic reluctance rotary transformer, 37-rotor core. Detailed Implementation

[0015] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0016] like Figures 1 to 4 The hub motor with anti-magnetic steel detachment shown includes a hub housing 21, a resolver core 37, a reluctance rotary transformer 36, a bearing 35, a stator core, an aluminum bracket 34, and a base 33 connected in sequence. A coil is mounted on the stator core, and insulating plates 32 are provided on both sides of the stator core. Several magnets are arranged circumferentially around the inner wall of the hub housing 21. A hub magnet pressure plate assembly 11 is installed on the back of the hub housing 21, and the hub magnet pressure plate assembly 11 includes six hub magnets. The pressure plates 12 are connected end to end. Each hub magnet pressure plate 12 is provided with two first screw holes. The back of the hub housing 21 is provided with a second screw hole corresponding to the first screw hole. Screws 13 are provided to connect the first screw hole and the second screw hole to connect and fix the hub magnet pressure plate 12 to the hub housing 21. The outer arc surface of the hub magnet pressure plate 12 is in contact with the outer wall surface of the hub housing 21. The radius of the inner arc surface of the hub magnet pressure plate 12 is the same as the maximum radius of the stator core 31.

[0017] The working process and principle of this utility model are as follows: Since the magnets are arranged circumferentially within the inner wall of the hub housing 21 and are glued to the inner wall of the outer hub housing, the magnets will still be flung off under centrifugal force when the hub housing 21 rotates at high speed. Moreover, since the upper and lower ends of the magnets are respectively wrapped by the hub housing 21 and the stator core 31, and the front end of the magnets is also blocked by the hub housing 21, the only direction in which the magnets will fly off is the back of the hub housing 21. Here, the combined and spliced ​​hub magnet pressure plate 12 blocks the falling magnets, preventing them from flying out and causing safety hazards. At the same time, the hub magnet pressure plate assembly 11 formed by combining and splicing several hub magnet pressure plates 12 can be precisely disassembled and reinstalled according to the specific parts during maintenance work, without having to completely disassemble the entire hub magnet pressure plate assembly 11, which is convenient and quick.

[0018] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0019] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hub motor with anti-magnetic steel detachment, comprising a hub housing, a resolver core, a reluctance rotary transformer, a bearing, a stator core, an aluminum bracket, and a base connected in sequence, wherein a coil is disposed on the stator core, and insulating plates are provided on both sides of the stator core, characterized in that: Several magnets are arranged in a circular pattern around the inner wall of the wheel hub housing. A wheel hub magnet pressure plate assembly is installed on the back of the wheel hub housing. The wheel hub magnet pressure plate assembly includes several wheel hub magnet pressure plates, which are connected end to end. Each wheel hub magnet pressure plate is provided with several first screw holes. The back of the wheel hub housing is provided with several second screw holes corresponding to the first screw holes. Several screws are provided to connect and fix the wheel hub magnet pressure plates to the wheel hub housing by connecting the first screw holes and the second screw holes.

2. The hub motor with antimagnetic steel detachment according to claim 1, characterized in that: Each hub magnet pressure plate is provided with two first screw holes, which are respectively located at both ends of the hub magnet pressure plate.

3. The hub motor with anti-magnetic steel detachment according to claim 1, characterized in that: The outer arc surface of the hub magnet pressure plate is fitted to the outer wall surface of the hub housing.

4. The hub motor with anti-magnetic steel detachment according to claim 1, characterized in that: The radius of the inner arc surface of the hub magnet pressure plate is the same as the maximum radius of the stator core.

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