Rotor hall magnet integrated air-cooled motor

Abstract

The utility model discloses a rotor hall magnet steel integrated air -cooled motor, including rear end cover and the hall board and the pivot of being located rear end cover inside, the shaft body tail of pivot is near the annular recess that hall board left side board surface position has been seted up, the hall magnet steel is embedded in the groove cavity of this annular recess, and the right side of hall magnet steel is equipped with the baffle, and the baffle fixes hall magnet steel in pivot position and the baffle is integrally annular welded with pivot end portion, the utility model discloses simple structure, only needs to set up annular recess on pivot, to satisfy the placement of hall magnet steel, has saved the hall magnet steel cover, hall magnet steel baffle and the shaft baffle circle that need before, and also does not need to take apart hall board and readjusts hall position every time motor inspection, does not need to move hall board only needs to take apart rear end cover and can complete the complete disassembly of rotor.

Description

Technical Field

[0001] This utility model relates to the field of motors, specifically to an integrated air-cooled motor with a rotor Hall magnet. Background Technology

[0002] Brushless DC motors are high-efficiency, reliable motors with high power density, and are widely used in various precision, high-efficiency, and low-maintenance applications. With the development of small brushless DC motors, the size requirements of motors are getting smaller and the air volume requirements are getting larger. Based on the requirements of low-voltage DC power supply, a large number of air-cooled motors based on brushless DC motors have appeared on the market. An air-cooled motor is a type of motor that transfers internal heat to heat sinks through forced convection by a fan or natural convection.

[0003] Most air-cooled motors on the market consist of a rear end cover, a shaft, a Hall magnet, a shaft retaining ring, and a Hall plate. During disassembly and assembly, the Hall plate, shaft retaining ring, Hall magnet component, and rear end cover must be removed in sequence before the rotor can be removed. The same steps are required during assembly, and the Hall plate position needs to be readjusted after disassembly. Therefore, an air-cooled motor with an integrated rotor Hall magnet is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated air-cooled motor with a rotor Hall magnet to solve the problems mentioned in the background art, such as the difficulty in assembling and disassembling air-cooled motors on the market, and the need to re-energize and adjust the Hall position after the Hall plate is disassembled.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An integrated air-cooled motor with a rotor Hall magnet includes a rear end cover, a Hall plate and a rotating shaft located inside the rear end cover. An annular groove is provided at the tail end of the rotating shaft near the left side of the Hall plate. A Hall magnet is embedded in the groove cavity. A baffle is provided on the right side of the Hall magnet. The baffle fixes the Hall magnet at the rotating shaft position and is annularly welded to the end of the rotating shaft.

[0006] Furthermore, the area of ​​the baffle plate is equal to the area of ​​the right end face of the rotating shaft, and the surface of the baffle plate is a rough surface.

[0007] Furthermore, the Hall plate is detachably connected and vertically mounted inside the rear end cover.

[0008] The beneficial effects of this utility model are: This utility model has a simple structure. It only requires an annular groove to be made on the rotating shaft to accommodate the placement of the Hall magnet, eliminating the need for the previously required Hall magnet sleeve, Hall magnet baffle, and shaft retaining ring. Furthermore, it eliminates the need to disassemble the Hall plate and readjust the Hall position during each motor inspection, making it easy to disassemble and assemble. When disassembling the rotor, there is no need to move the Hall plate; simply removing the rear end cover is sufficient to complete the complete disassembly of the rotor. This facilitates the widespread use of this integrated Hall magnet air-cooled motor. Attached Figure Description

[0009] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0010] In the diagram: 1. Rear end cover; 2. Shaft; 3. Hall plate; 4. Baffle; 5. Hall magnet. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] Please see Figure 1 This invention provides a technical solution for an integrated air-cooled motor with a rotor Hall magnet, comprising a rear end cover 1, a Hall plate 3 and a rotating shaft 2 located inside the rear end cover 1. The Hall plate 3 is detachably connected and vertically installed inside the rear end cover 1. An annular groove is provided at the tail end of the rotating shaft 2 near the left side of the Hall plate 3. A Hall magnet 5 is embedded in the groove cavity of the annular groove, and the groove cavity depth exceeds 1mm. A baffle 4 is provided on the right side of the Hall magnet 5, which fixes the Hall magnet 5 to the rotating shaft 2 and is annularly welded to the end of the rotating shaft 2. The rotating shaft 2 is horizontally placed inside the rear end cover 1. The area of ​​the baffle 4 is equal to the area of ​​the right end face of the rotating shaft 2. The surface of the baffle 4 is rough, which increases the friction of the baffle 4 surface and makes the baffle 4 and the rotating shaft 2 more firmly welded together. The side view of the baffle 4 is circular. The Hall magnet 5 is, but is not limited to, a CS3020 type magnet.

[0013] It should be noted that the rear end cover 1 is an important component of the air-cooled motor. In this embodiment, the rear end cover 1 is made of, but not limited to, cast iron, steel plate, and aluminum alloy. The rotating shaft 2 is made of, but not limited to, magnetically conductive steel, which can be made of silicon steel sheet.

[0014] This air-cooled motor with an integrated Hall magnet rotor has Hall magnet 5 embedded in the shaft 2. Only the baffle 4 is needed to fix the Hall magnet 5. When disassembling the rotor, there is no need to move the Hall plate 3; only the rear end cover 1 needs to be removed to complete the complete disassembly of the rotor. This air-cooled motor with an integrated Hall magnet rotor uses permanent magnet excitation, has a rated speed of 14,000 rpm, and an output power of no less than 250W. It has the advantages of high speed, small size, and integrated Hall magnet rotor. Through the rational design of the rotor structure and the overall motor structure, the problems of numerous rotor parts, complex disassembly and assembly, and excessive disassembly and assembly time are reduced from the source, providing a reference for the shaft structure of aerospace motors.

[0015] Among them, the Hall magnet 5 is a key component in the Hall sensor. It is mainly used to generate a magnetic field and cooperate with the Hall element to realize the sensing function. The Hall magnet 5 generates a magnetic field and generates a sensing signal pulse when it moves relative to the Hall element, thereby realizing the measurement of parameters such as rotation speed and position. The Hall plate 3 is an electronic component based on the Hall effect. It is mainly used to detect changes in the magnetic field and convert them into electrical signals.

[0016] In summary, this rotor Hall magnet integrated air-cooled motor has a simple structure. It only requires an annular groove to be made on the shaft 2 to accommodate the placement of the Hall magnet 5, eliminating the need for the previously required Hall magnet sleeve, Hall magnet baffle, and shaft retaining ring. Furthermore, it does not require disassembling the Hall plate 3 or readjusting the Hall position during each motor inspection, making it easy to disassemble and assemble. When disassembling the rotor, there is no need to move the Hall plate 3; simply removing the rear end cover 1 is sufficient to complete the complete disassembly of the rotor.

[0017] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0018] The above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be understood that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. In the present utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "joining", "fixing", etc. should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components. Among them, there are various ways of detachable installation, such as by plugging and snapping, or by bolt connection, etc.

[0019] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotor Hall magnet integrated air-cooled motor, characterized in that: The device includes a rear end cover, a Hall plate and a rotating shaft located inside the rear end cover. The shaft has an annular groove at the tail end near the left side of the Hall plate. A Hall magnet is embedded in the groove, and a baffle is provided on the right side of the Hall magnet. The baffle fixes the Hall magnet at the rotating shaft position and is annularly welded to the end of the rotating shaft.

2. The air-cooled motor with integrated rotor Hall magnet as described in claim 1, characterized in that: The baffle plate has an area equal to the area of ​​the right end face of the rotating shaft, and the surface of the baffle plate is rough.

3. The air-cooled motor with integrated rotor Hall magnet as described in claim 1, characterized in that: The Hall plate is detachably connected and vertically installed inside the rear cover.

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