CN112152349A - Fixing structure of disc type motor rotor magnet back iron - Google Patents

Abstract

The invention discloses a fixing structure of a disc type motor rotor magnet back iron, which comprises a rotor frame, a clamping groove, a magnet back iron, a fixing ring, a middle part, a connecting block, a through hole, a fixing groove, a rotating shaft and a shaft hole, wherein the fixing ring is arranged in the middle of the magnet back iron, the middle part is arranged in the middle of the fixing ring, one side of the fixing ring is uniformly and fixedly connected with the middle part through the connecting block, the rotating shaft is arranged in the middle of the middle part, the shaft hole is arranged in the middle of the rotating shaft, the fixing groove is arranged on the outer circumferential surface of the fixing ring at an equal angle, the rotor frame is arranged on the outer side of the magnet back iron, the clamping groove is arranged on the inner circumferential surface of the rotor frame at an equal angle, the through hole is formed between the connecting blocks, the middle part of the, the rotor frame and the magnet back iron are firmly fixed.

Description

A fixed structure for the back iron of the rotor magnet of a disc motor

technical field

The invention relates to the technical field of disc motors, in particular to a fixing structure of a rotor magnet back iron of a disc motor.

Background technique

Disc motor is also called disc motor. It has the characteristics of small size, light weight and high efficiency. Generally, the rotor and stator of the motor are dressed inside and outside. In order to be thin, the stator is on a flat substrate and the rotor is covered. On the stator, the stator is generally a coil, and the rotor is a permanent magnet or a disk with permanent magnets. The rotor of the disk motor in the prior art is easy to fall off when the magnet back iron is rotated, and the rotor frame and the magnet back iron are not fixed. Therefore, it is necessary to design a fixing structure for the back iron of the rotor magnet of the disc motor.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a fixing structure for the back iron of the rotor magnet of a disc motor, so as to solve the above-mentioned problems in the background art.

In order to solve the above technical problems, the present invention provides the following technical solutions: a fixing structure of the rotor magnet back iron of a disc motor, including a rotor frame, a clamping slot, a convex groove of the magnet back iron, a magnet back iron, a fixing ring, a middle part, a connection block, through hole, fixing groove, rotating shaft and shaft hole, a fixing ring is arranged in the middle of the magnet back iron, a middle part is arranged in the middle of the fixing ring, and one side of the fixing ring is evenly fixed with the middle part through the connecting block A rotating shaft is installed in the middle of the middle part, and a shaft hole is opened in the middle of the rotating shaft, the outer circumferential surface of the fixing ring is equiangularly provided with a fixing groove, the outer side of the magnet back iron is provided with a rotor frame, the The inner circumferential surface of the rotor frame is provided with clamping grooves at equal angles.

Further, through holes are formed between the connecting blocks.

Further, a center hole is opened in the middle of the middle part, and the rotating shaft and the center hole are in a matching structure.

Further, one end of the rotating shaft is provided with an external thread.

Further, the slot on the rotor frame is matched with the magnet back iron, and the magnet back iron and the rotor frame are fixed by glue.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the rotor frame is made of aluminum material and does not have a magnetic conductivity function, the back iron of the magnet can make the magnet form a magnetic field circuit, and the inner circumferential surface of the rotor frame is equidistantly provided with clips. The groove is matched with the convex groove of the magnet back iron, which is mechanically fixed. At the same time, the magnet back iron and the rotor frame are fixed by glue, which effectively prevents the magnet back iron from falling off when the rotor rotates, and reduces the weight of the motor.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 and Fig. 2 are the overall structure schematic diagram of the present invention;

Fig. 3 is the structural representation of A region in Fig. 1;

In the figure: 1. Rotor frame; 2. Card slot; 3. Magnet back iron; 4. Fixing ring; 5. Middle part; 6. Connecting block; 7. Through hole; 8. Fixing groove; 9. Shaft; 10 , Axle hole, 11, magnet back iron convex groove.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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, but not all of 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.

1-3, the present invention provides a technical solution: a fixing structure of a rotor magnet back iron of a disc motor, including a rotor frame 1, a card slot 2, a magnet back iron 3, a fixing ring 4, an intermediate part 5, The connecting block 6, the through hole 7, the fixing groove 8, the rotating shaft 9, the shaft hole 10 and the convex groove 11 of the magnet back iron, the fixing ring 4 is arranged in the middle of the magnet back iron 3, and the middle part 5 is arranged in the middle of the fixing ring 4, And one side of the fixing ring 4 is evenly connected to the middle part 5 through the connecting block 6, and the connecting blocks 6 form through holes 7 between each other, which is convenient for the use of the connecting block 6; the middle part 5 is installed with a rotating shaft 9, and the middle of the rotating shaft 9 is opened. There is a shaft hole 10, a central hole is opened in the middle of the middle part 5, the rotating shaft 9 and the central hole are in a matching structure, which is convenient for the installation and fixing of the rotating shaft 9; one end of the rotating shaft 9 is provided with an external thread, which is convenient for the connection of the rotating shaft 9; The outer circumferential surface is provided with a fixed groove 8 at an equal angle, the outer side of the magnet back iron 3 is provided with a rotor frame 1, and the inner circumferential surface of the rotor frame 1 is provided with a clamping slot 2 at an equal angle. The clamping slot 2 on the rotor frame 1 and the magnet back The iron convex groove 11 is matched, and the magnet back iron 3 and the rotor frame 1 are fixed by glue, so that the magnet back iron 3 and the rotor frame 1 are connected stably; 3. The magnet can form a magnetic field circuit. The inner circumferential surface of the rotor frame 1 is provided with a slot 2 at an equal angle, which is matched with the magnet back iron 3 and is mechanically fixed. At the same time, the magnet back iron 3 and the rotor frame 1 are fixed by glue, which effectively prevents the rotor from The magnet back iron 3 falls off when rotating, reducing the weight of the motor.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A fixing structure of a rotor magnet back iron of a disc motor, comprising a rotor frame (1), a card slot (2), a magnet back iron (3), a fixing ring (4), a middle part (5), a connecting block ( 6), the through hole (7), the fixing groove (8), the rotating shaft (9) and the shaft hole (10), characterized in that: the middle of the magnet back iron (3) is provided with a fixing ring (4), so A middle portion (5) is arranged in the middle of the fixing ring (4), and one side of the fixing ring (4) is evenly connected to the middle portion (5) through the connecting block (6), and the middle portion of the middle portion (5) is installed in the middle. There is a rotating shaft (9), and the middle of the rotating shaft (9) is provided with a shaft hole (10), the outer circumferential surface of the fixing ring (4) is equiangularly provided with a fixing groove (8), and the magnet back iron (3) A rotor frame (1) is arranged on the outer side of the rotor frame, and the inner circumferential surface of the rotor frame (1) is provided with clamping grooves (2) at equal angles. 2 . The fixing structure of the rotor magnet back iron of a disc motor according to claim 1 , wherein through holes ( 7 ) are formed between the connecting blocks ( 6 ). 3 . 3. The fixing structure of the rotor magnet back iron of a disc motor according to claim 1, characterized in that: a center hole is opened in the middle of the middle part (5), and the shaft (9) and the center hole are Matching structure. 4 . The fixing structure of the rotor magnet back iron of a disc motor according to claim 1 , characterized in that: one end of the rotating shaft ( 9 ) is provided with an external thread. 5 . 5 . The fixing structure of the rotor magnet back iron of a disc motor according to claim 1 , wherein the slot ( 2 ) on the rotor frame ( 1 ) is matched with the magnet back iron ( 3 ). 6 . And the magnet back iron (3) and the rotor frame (1) are fixed by glue.

Images