Rotor assembly of hollow shaft motor

Abstract

The utility model relates to the technical field of hollow shaft motors, in particular to a rotor assembly of a hollow shaft motor, which comprises a magnetic conductive hollow shaft, the outer surface of the magnetic conductive hollow shaft is provided with a gluing groove, and the outer surface, close to the gluing groove, of the magnetic conductive hollow shaft is fixedly connected with a rough bonding surface. The magnetic conductive hollow shaft is simple in structure, does not need to process positioning grooves for uniformly distributing rotor magnetic steel on the outer surface of the magnetic conductive hollow shaft, is short in processing period, does not need to be clamped for multiple times, is formed by full turning, and is low in cost and high in quality; the magnetic steel positioning frame can well and uniformly distribute rotor magnetic steel outside the magnetic conductive hollow shaft, and the magnetic steel positioning frame is formed by injection molding, so that the stability of the structure size and the cost are extremely low; rotor magnetic steel is designed to be an arc with an inner circle consistent with the hollow shaft, the rotor magnetic steel and the hollow shaft are bonded into a whole very simply and rapidly through a rough bonding surface of the magnetic conductive hollow shaft and a gluing groove, and the reliability of the whole structure is improved through an externally bonded stainless steel protective sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow shaft motors, and specifically relates to a rotor assembly of a hollow shaft motor. Background Art

[0002] The existing rotor assembly of a hollow shaft motor generally consists of three components, a magnetic conductive hollow shaft, magnetic steel bonded to the circumference of the hollow shaft, and a stainless steel protective sleeve. Among them, the magnetic conductive hollow shaft is manufactured by machining. The magnetic steel is bonded to the hollow shaft with glue, and the stainless steel protective sleeve is bonded to the outer surface of the magnetic steel.

[0003] However, in the structure of the existing rotor assembly of a hollow shaft motor, since the magnetic steel needs to be evenly bonded to the surface of the magnetic conductive hollow shaft, on the structure of the magnetic conductive hollow shaft, uniformly distributed installation positions need to be designed at the magnetic steel bonding positions. The machining of these installation positions is difficult, the quality stability is low, and the processing cost and control cost are high. Content of the Utility Model

[0004] The purpose of the utility model is to provide a rotor assembly of a hollow shaft motor to solve the problems of difficult machining of the installation positions, low quality stability, high processing cost and high control cost mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution. A rotor assembly of a hollow shaft motor includes a magnetic conductive hollow shaft. Glue application grooves are formed on the outer surface of the magnetic conductive hollow shaft. A rough bonding surface is fixedly connected to the outer surface of the magnetic conductive hollow shaft near the glue application grooves. A magnetic steel positioning frame is assembled on the outer surface of the magnetic conductive hollow shaft. Ten groups of spokes are fixedly connected to the inner side of the magnetic steel positioning frame. Rotor magnetic steel is connected between the spokes. The stainless steel protective sleeve is bonded to the outer surface of the rough bonding surface. A connection groove is formed on the lower surface of the stainless steel protective sleeve.

[0006] Preferably, the magnetic conductive hollow shaft is cylindrical in shape and is machined from a magnetic conductive metal material. Its function is to be finish-machined by one-time clamping during turning. The machining difficulty is low, the cycle is short, and the glue application grooves and rough bonding surface are arranged on the surface.

[0007] Preferably, the magnetic steel positioning frame is integrally injection-molded from an upper and lower assembly ring and ten evenly distributed spokes. Its function is to facilitate the bonding of the rotor magnetic steel to the magnetic conductive hollow shaft and the stainless steel protective sleeve by assembling and connecting the rotor magnetic steel to the ten evenly distributed spokes and the upper and lower rings.

[0008] Preferably, the inner circle of the rotor magnetic steel is consistent with the outer surface of the magnetic conductive hollow shaft. Its function is to facilitate the bonding of the rotor magnetic steel to the glue application grooves and rough bonding surface arranged on the outer surface of the magnetic conductive hollow shaft, thereby increasing the stability of the overall structure.

[0009] Preferably, the stainless steel protective cover is drawn from a non-magnetic stainless steel material, and its function is to protect the magnetic hollow shaft, the magnet positioning frame and the rotor magnet.

[0010] Preferably, the rotor magnet is bonded to the magnetic hollow shaft through the magnet positioning frame. Its function is to bond one side of the rotor magnet to the magnetic hollow shaft and the other side to the stainless steel protective cover, so that the components can be bonded together very simply and quickly.

[0011] Preferably, the rotor magnet is bonded to the magnetic hollow shaft with glue, and the stainless steel protective cover is bonded to the outer surface of the rotor magnet. Its function is that the inner circle of the rotor magnet is consistent with the glue application groove and the rough bonding surface on the outer surface of the magnetic hollow shaft, so that when bonding, the rotor magnet can be tightly bonded to the glue application groove and the rough bonding surface on the outer surface of the magnetic hollow shaft, making the structure more stable.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. Compared with the prior art, the magnetic hollow shaft of this structure is simple, does not need to process evenly distributed positioning grooves for the rotor magnets on the outer surface of the magnetic hollow shaft, has a short processing cycle, does not require multiple clamping, and is machined throughout the vehicle, with low cost and high quality; the magnet positioning frame can evenly distribute the rotor magnets outside the magnetic hollow shaft, and the magnet positioning frame is injection molded, with extremely low structural dimension stability and cost; the rotor magnet is designed as an arc with an inner circle consistent with the hollow shaft, and is bonded together very simply and quickly through the rough bonding surface and the glue application groove of the magnetic hollow shaft, and the externally bonded stainless steel protective cover increases the reliability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view three-dimensional schematic diagram of the structure of the present utility model;

[0015] Figure 2 is for the present utility model Figure 1 a three-dimensional schematic diagram of the structure of the magnetic hollow shaft in;

[0016] Figure 3 is for the present utility model Figure 1 a three-dimensional schematic diagram of the structure of the magnet positioning frame in;

[0017] Figure 4 is for the present utility model Figure 1 a three-dimensional schematic diagram of the structure of the rotor magnet in;

[0018] Figure 5 is for the present utility model Figure 1 a three-dimensional schematic diagram of the structure of the stainless steel protective cover in.

[0019] In the figure: 1. Magnetic-conducting hollow shaft; 2. Glue application groove; 3. Rough bonding surface; 4. Magnet positioning frame; 41. Spoke; 5. Rotor magnet; 6. Stainless steel protective sleeve; 61. Connection groove. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-5 , an embodiment provided by the present invention:

[0022] A rotor assembly of a hollow shaft motor includes a magnetic-conducting hollow shaft 1. A glue application groove 2 is provided on the outer surface of the magnetic-conducting hollow shaft 1. A rough bonding surface 3 is fixedly connected to the outer surface of the magnetic-conducting hollow shaft 1 near the glue application groove 2. A magnet positioning frame 4 is assembled on the outer surface of the magnetic-conducting hollow shaft 1. Ten groups of spokes 41 are fixedly connected to the inner side of the magnet positioning frame 4. A rotor magnet 5 is connected between the spokes 41. A stainless steel protective sleeve 6 is bonded to the outer surface of the rough bonding surface 3. A connection groove 61 is provided on the lower surface of the stainless steel protective sleeve 6.

[0023] Furthermore, the magnetic-conducting hollow shaft 1 is in a cylindrical shape and is machined from a magnetic-conducting metal material. Its function is to be machined and finished in one clamping by turning, with low processing difficulty and short cycle. The glue application groove 2 and the rough bonding surface 3 are provided on the surface.

[0024] Furthermore, the magnet positioning frame 4 is integrally injection-molded from an upper and lower assembly ring and ten evenly distributed spokes 41. Its function is to assemble and connect the rotor magnet 5 to the ten evenly distributed spokes 41 and the upper and lower rings, thereby facilitating the bonding of the rotor magnet 5 to the magnetic-conducting hollow shaft 1 and the stainless steel protective sleeve 6.

[0025] Furthermore, the inner circle of the rotor magnet 5 is consistent with the outer surface of the magnetic-conducting hollow shaft 1. Its function is to facilitate the bonding of the rotor magnet 5 to the glue application groove 2 and the rough bonding surface 3 provided on the outer surface of the magnetic-conducting hollow shaft 1, thereby increasing the stability of the overall structure.

[0026] Furthermore, the stainless steel protective sleeve 6 is stretched from a non-magnetic stainless steel material. Its function is to protect the magnetic-conducting hollow shaft 1, the magnet positioning frame 4, and the rotor magnet 5.

[0027] Further, the rotor permanent magnet 5 is adhered to the magnetic-conducting hollow shaft 1 through the magnet positioning frame 4. Its function is to adhere one side of the rotor permanent magnet 5 to the magnetic-conducting hollow shaft 1 and the other side to the stainless-steel protective sleeve 6, so that the components can be adhered into one body very simply and quickly.

[0028] Further, the rotor permanent magnet 5 is adhered to the magnetic-conducting hollow shaft 1 with glue, and the stainless-steel protective sleeve 6 is adhered to the outer surface of the rotor permanent magnet 5. Its function is that the inner circle of the rotor permanent magnet 5 is consistent with the glue application groove 2 and the rough bonding surface 3 on the outer surface of the magnetic-conducting hollow shaft 1, so that when adhering, the rotor permanent magnet 5 can be tightly adhered to the glue application groove 2 and the rough bonding surface 3 on the outer surface of the magnetic-conducting hollow shaft 1, thus making the structure more stable.

[0029] Working principle: By assembling the magnet positioning frame 4 to the outside of the magnetic-conducting hollow shaft 1 and injecting glue into the inner side of the glue application groove 2 opened on the outer surface of the magnetic-conducting hollow shaft 1, the rotor permanent magnet 5 is adhered to the magnetic-conducting hollow shaft 1, and then the stainless-steel protective sleeve 6 is adhered to the rotor permanent magnet 5, so that the components can be adhered into one body conveniently and quickly. At the same time, the structure of the magnetic-conducting hollow shaft 1 is simple, there is no need to process evenly distributed positioning grooves for the rotor permanent magnets 5 on the outer surface of the magnetic-conducting hollow shaft 1, the processing cycle is short, there is no need for multiple clamping, and it is processed as a whole vehicle, with low cost and high quality; the magnet positioning frame 4 can evenly distribute the rotor permanent magnets 5 outside the magnetic-conducting hollow shaft 1, and the magnet positioning frame 4 is injection-molded, with extremely low structural dimension stability and cost; the rotor permanent magnet 5 is designed as an arc with an inner circle consistent with the hollow shaft, and is adhered to one body very simply and quickly through the rough bonding surface 3 and the glue application groove 2 of the magnetic-conducting hollow shaft 1, and the externally adhered stainless-steel protective sleeve 6 increases the reliability of the overall structure.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A rotor assembly of a hollow shaft motor, comprising a magnetically conductive hollow shaft (1), characterized in that: The outer surface of the magnetic hollow shaft (1) is provided with a glue coating groove (2), and the outer surface of the magnetic hollow shaft (1) near the glue coating groove (2) is fixedly connected with a rough bonding surface (3). The outer surface of the magnetic hollow shaft (1) is equipped with a magnetic steel positioning frame (4), and the inner side of the magnetic steel positioning frame (4) is fixedly connected with ten groups of spokes (41), and the spokes (41) are connected with rotor magnetic steel (5). The outer surface of the rough bonding surface (3) is bonded with a stainless steel protective sleeve (6), and the lower surface of the stainless steel protective sleeve (6) is provided with a connecting groove (61).

2. The rotor assembly of a hollow shaft motor according to claim 1, characterized in that: The magnetic hollow shaft (1) is in a cylindrical shape and is machined from a magnetic metal material.

3. The rotor assembly of a hollow shaft motor according to claim 2, characterized in that: The magnetic steel positioning frame (4) is integrally formed by injection molding of upper and lower assembly rings and ten evenly distributed spokes (41).

4. The rotor assembly of a hollow shaft motor according to claim 3, characterized in that: The inner circle of the rotor magnetic steel (5) is consistent with the outer surface of the magnetic hollow shaft (1).

5. The rotor assembly of a hollow shaft motor according to claim 1, characterized in that: The stainless steel protective sleeve (6) is formed by stretching a non-magnetic stainless steel material.

6. The rotor assembly of a hollow shaft motor according to claim 4, characterized in that: The rotor magnetic steel (5) is bonded to the magnetic hollow shaft (1) via a magnetic steel positioning frame (4).

7. The rotor assembly of a hollow shaft motor according to claim 5, characterized in that: The rotor magnetic steel (5) is bonded to the magnetic hollow shaft (1) by glue, and the stainless steel protective sleeve (6) is bonded to the outer surface of the rotor magnetic steel (5).

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