Magnetic steel attaching structure and motor thereof

Abstract

The utility model belongs to the field of motor fittings, provide a kind of magnetic steel pasting structure and its motor, including rotor shell, the inside of rotor shell is provided with mounting bracket, mounting bracket is set to circular ring structure, the inner ring of mounting bracket is presented circular equidistance and is opened with multiple pasting grooves for accommodating magnetic steel, the two sides of the slot wall of pasting groove are symmetrically provided with anti-drop boss, the slot wall of pasting groove is opened with glue injection port, the inside of mounting bracket is provided with annular glue injection channel, annular glue injection channel is communicated with multiple glue injection ports;The utility model is provided with the mounting bracket of pasting groove, when carrying out magnetic steel pasting, magnetic steel can be pressed into pasting groove first, then entire support is pasted to the inner wall of rotor shell, pasting operation is easier, the stability of magnetic steel pasting in pasting groove is improved using anti-drop boss, solve the problem that magnetic steel vibrates, high-temperature degumming and drop.

Description

Technical Field

[0001] This utility model belongs to the field of motor accessories, specifically a magnet mounting structure and its motor. Background Technology

[0002] Magnets, as a type of permanent magnet material, have the core function of establishing a constant and strong magnetic field around themselves. In electric motors, especially permanent magnet motors, magnets are an indispensable key component, replacing the electromagnets in traditional motors that require electricity to generate a magnetic field. The performance of the magnets directly determines the motor's core performance indicators such as power density, efficiency, and torque. Currently, the main method for fixing the rotor magnets in brushless motors is to directly glue the magnets to the inner wall of the rotor housing using adhesives. This method is simple and low-cost, but it has significant drawbacks. The curing process and coating uniformity of the adhesive are difficult to control precisely, which can easily lead to insufficient bonding strength. Under high-speed operation and severe vibration, the magnets are prone to displacement or detachment. At the same time, the long-term operation of the motor generates high temperatures, which may cause the adhesive performance to degrade or even fail, posing a risk of magnets falling off due to delamination, which seriously affects the reliability and service life of the motor.

[0003] To address the problems raised in the background art, those skilled in the art have proposed a magnet mounting structure and its motor. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a magnet mounting structure and its motor.

[0005] A magnet mounting structure and its motor include a rotor housing, an internal mounting frame with a circular ring structure, and multiple mounting slots for accommodating magnets equidistantly spaced on the inner ring of the mounting frame. Anti-detachment protrusions are symmetrically arranged on both sides of the inner wall of each mounting slot, and an injection port is provided on the wall of each slot. An annular injection channel is provided inside the mounting frame, communicating with the multiple injection ports. An injection port connected to the annular injection channel is provided on the end face of the mounting frame. The mounting frame is composed of multiple arc-shaped modules spliced ​​along the circumferential direction, and the multiple arc-shaped modules are fixedly connected by connectors to form a complete circular ring structure.

[0006] Preferably, each arc-shaped module has 2 to 4 mounting slots, and the glue inlet is only located on one of the arc-shaped modules, with a sealing plug on the glue inlet cover.

[0007] Preferably, the annular injection channel is composed of arc-shaped channel segments opened inside each arc-shaped module, and the ends of adjacent arc-shaped channel segments are connected through a butt-fitting sealing interface.

[0008] Preferably, the mating sealing interface includes an annular groove and an annular protrusion disposed on the two end faces of the arc-shaped module. The annular groove and the annular protrusion are disposed relative to the end of the arc-shaped channel segment. The annular protrusion is embedded in the annular groove of the adjacent arc-shaped module to achieve a sealed mating.

[0009] Preferably, a sealing ring is embedded in the annular groove.

[0010] Preferably, the connector includes an arc-shaped plate, a flange ring, bolts, and nuts. Arc-shaped plates are symmetrically arranged at the top and bottom of the periphery of multiple arc-shaped modules. A flange ring is provided on the end face between multiple arc-shaped plates at the same height. Multiple sets of first mounting holes are opened circumferentially on the flange ring. Second mounting holes corresponding to the first mounting holes are opened on the arc-shaped plate. Bolts are installed through the first mounting holes and the second mounting holes between the arc-shaped plate and the flange ring. Nuts are threaded to the tail end of the bolts.

[0011] Preferably, multiple heat sinks are evenly arranged on the periphery of the multiple arc-shaped modules between the upper and lower arc-shaped plates, and the multiple heat sinks are all arranged to avoid the hole positions of the second mounting hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, through the installation bracket with mounting groove, allows the magnet to be pressed into the mounting groove first, and then the entire bracket to be mounted on the inner wall of the rotor housing during magnet mounting. The mounting operation is easier. The anti-detachment protrusions improve the stability of the magnet mounted in the mounting groove, solving the problem of magnet vibration and high temperature delamination causing it to fall off. At the same time, it can save the amount of magnet used without having a significant impact on its performance, making the motor lighter and reducing costs. 2. This utility model, through the design of an annular glue injection channel, allows the glue to be injected from one glue inlet and then evenly distributed to the glue injection ports of all mounting slots, realizing one-time and uniform glue injection for all magnets, simplifying the process and improving production efficiency. 3. The mounting frame adopts a combined structure composed of multiple arc-shaped modules and connectors. When a single magnet is accidentally damaged, the connectors can be used to replace only the independent module in which it is located, without scrapping the entire rotor. This greatly reduces maintenance costs and time, and improves the maintainability and economy of the motor. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a structural diagram of the mounting bracket of this utility model; Figure 3 This utility model Figure 2 Top cross-sectional structural diagram; Figure 4This is a partial structural diagram of the present invention; Figure 5 This is a side sectional view of the arc-shaped module of this utility model; Figure 6 This is a side view of the arc-shaped module of this utility model.

[0014] In the picture: 1. Rotor housing; 2. Mounting bracket; 21. Mounting groove; 211. Anti-detachment protrusion; 212. Injection port; 22. Annular injection channel; 221. Inlet; 2211. Sealing plug; 23. Arc-shaped module; 231. Arc-shaped channel section; 232. Butt-joint sealing interface; 2321. Annular groove; 2322. Annular protrusion; 3. Connector; 31. Arc-shaped plate; 311. Second mounting hole; 32. Flange ring; 321. First mounting hole; 33. Bolt; 34. Nut; 4. Heat sink. Detailed Implementation

[0015] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0016] As attached Figure 1 To be continued Figure 6 As shown: This utility model provides a magnet mounting structure and its motor, including a rotor housing 1, an mounting frame 2 inside the rotor housing 1, the mounting frame 2 being a circular ring structure, the inner ring of the mounting frame 2 having multiple mounting grooves 21 for accommodating magnets at equal intervals around the circumference, anti-detachment protrusions 211 symmetrically arranged on both sides of the inner wall of the mounting groove 21, and a glue injection port 212 opening in the groove wall of the mounting groove 21, the mounting frame 2 having an annular glue injection channel 22 inside, the annular glue injection channel 22 communicating with the multiple glue injection ports 212, and a glue inlet 221 opening on the end face of the mounting frame 2 communicating with the annular glue injection channel 22, the mounting frame 2 being spliced ​​together from multiple arc-shaped modules 23 along the circumferential direction, the multiple arc-shaped modules 23 being fixedly connected by connectors 3 to form a complete circular ring structure.

[0017] refer to Figure 5 Each arc-shaped module 23 has 2 to 4 mounting slots 21, and the glue inlet 221 is only provided on one of the arc-shaped modules 23. The glue inlet 221 is covered with a sealing plug 2211.

[0018] Specifically, the mounting slots 21 are distributed on multiple arc-shaped modules 23, which facilitates the reasonable layout of the magnet positions according to the motor design requirements. At the same time, each arc-shaped module 23 carries a certain number of magnets, making the structure more reasonable and convenient for individual replacement later. The adhesive is conveniently introduced into the mounting slots 21 through the sealing plug 2211.

[0019] refer to Figure 3 and Figure 5 The annular injection channel 22 is composed of an arc-shaped channel segment 231 opened inside each arc-shaped module 23, and the ends of adjacent arc-shaped channel segments 231 are connected through a butt-fitting sealing interface 232.

[0020] Specifically, the annular glue injection channel 22 is divided into multiple arc-shaped channel segments 231, which are respectively set in each arc-shaped module 23. This facilitates the manufacturing and processing of the arc-shaped modules 23. When splicing the arc-shaped modules 23, adjacent arc-shaped channel segments 231 are connected by a butt-fitting sealing interface 232, so that the glue can flow smoothly in the entire annular glue injection channel 22, thereby evenly distributing it to the glue injection port 212 of each mounting slot 21, realizing the glue injection operation for all magnets.

[0021] refer to Figure 4 and Figure 6 The mating sealing interface 232 includes an annular groove 2321 and an annular protrusion 2322 disposed on the two end faces of the arc-shaped module 23. The annular groove 2321 and the annular protrusion 2322 are disposed relative to the end of the arc-shaped channel segment 231. The annular protrusion 2322 is embedded in the annular groove 2321 of the adjacent arc-shaped module 23 to achieve a sealed mating.

[0022] Specifically, when splicing the arc-shaped modules 23, the annular protrusion 2322 on the end face of one arc-shaped module 23 is embedded into the annular groove 2321 on the end face of the adjacent arc-shaped module 23, so that the two arc-shaped modules 23 form a tight fit at the connection point, preventing the adhesive from leaking from the connection point, ensuring the sealing of the annular adhesive channel 22, and ensuring that the adhesive can flow according to the designed path and smoothly reach each mounting slot 21.

[0023] Among them, a sealing ring is embedded in the annular groove 2321.

[0024] Specifically, the sealing ring further enhances the sealing performance of the mating sealing interface 232. When the annular protrusion 2322 is embedded in the annular groove 2321, the sealing ring is compressed, filling the tiny gap between the two and forming a more reliable sealing barrier.

[0025] refer to Figure 2 and Figure 4The connector 3 includes an arc plate 31, a flange ring 32, a bolt 33, and a nut 34. Arc plates 31 are symmetrically arranged on the top and bottom of the periphery of multiple arc modules 23. A flange ring 32 is arranged on the end face between multiple arc plates 31 located at the same height. Multiple sets of first mounting holes 321 are opened in a circle on the flange ring 32. A second mounting hole 311 corresponding to the first mounting hole 321 is opened on the arc plate 31. A bolt 33 is arranged through the first mounting hole 321 and the flange ring 32, and a nut 34 is threaded to the tail end of the bolt 33.

[0026] Specifically, the arc-shaped plates 31 are symmetrically arranged on the top and bottom of the arc-shaped module 23 to support and fix the arc-shaped module 23. Multiple arc-shaped modules 23 are connected by the arc-shaped plates 31 and the flange ring 32 to form a complete ring structure, which ensures the overall strength and stability of the mounting frame 2, and also facilitates the disassembly of individual arc-shaped modules 23.

[0027] refer to Figure 2 and Figure 4 Multiple arc-shaped modules 23 are evenly arranged with multiple heat sinks 4 located between the upper and lower arc-shaped plates 31, and the multiple heat sinks 4 are all arranged to avoid the holes of the second mounting hole 311.

[0028] Specifically, the heat sink 4 increases the contact area between the mounting bracket 2 and the surrounding air, improving heat dissipation efficiency and reducing the probability of adhesive delamination.

[0029] Working principle: When installing the magnets, multiple arc-shaped modules 23 are first assembled into a mounting frame 2. This is achieved by connecting multiple arc-shaped modules 23 with an arc-shaped plate 31 and a flange ring 32 to form a complete circular structure mounting frame 2. Then, the magnets are pressed into the mounting grooves 21. The anti-detachment protrusions 211 can improve the stability of the magnets in the mounting grooves 21. During glue injection, the sealing plug 2211 is opened, and the glue is injected into the annular glue injection channel 22 from the glue inlet 221. The glue is evenly distributed to the glue injection ports 212 of each mounting groove 21 through the annular glue injection channel 22, achieving one-time uniform glue injection for all magnets. When a single magnet is accidentally damaged, the arc-shaped module 23 to which it belongs can be replaced by unscrewing the nut 34, without scrapping the entire rotor, thus reducing maintenance costs.

[0030] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model, which is defined by the appended claims and their equivalents.

Claims

1. A magnet mounting structure and its motor, comprising a rotor housing (1), wherein a mounting frame (2) is provided inside the rotor housing (1), the mounting frame (2) is configured as a ring structure, and the inner ring of the mounting frame (2) is provided with a plurality of mounting slots (21) for accommodating magnets at equal intervals around the circumference, characterized in that: The mounting groove (21) has anti-detachment protrusions (211) symmetrically arranged on both sides of the inner wall of the groove. The mounting groove (21) has a glue injection port (212) on its groove wall. The mounting frame (2) has an annular glue injection channel (22) inside. The annular glue injection channel (22) is connected to multiple glue injection ports (212). The end face of the mounting frame (2) has a glue inlet (221) connected to the annular glue injection channel (22). The mounting frame (2) is spliced ​​together from multiple arc-shaped modules (23) along the circumferential direction. The multiple arc-shaped modules (23) are fixedly connected to each other by connectors (3) to form a complete annular structure.

2. The magnet mounting structure and its motor as described in claim 1, characterized in that: Each arc module (23) has 2 to 4 mounting slots (21), and the glue inlet (221) is only set on one of the arc modules (23). The glue inlet (221) is covered with a sealing plug (2211).

3. The magnet mounting structure and its motor as described in claim 1, characterized in that: The annular injection channel (22) consists of an arc-shaped channel segment (231) inside each arc-shaped module (23), and the ends of adjacent arc-shaped channel segments (231) are connected through a butt-fitting sealing interface (232).

4. The magnet mounting structure and its motor as described in claim 3, characterized in that: The mating sealing interface (232) includes an annular groove (2321) and an annular protrusion (2322) on the two end faces of the arc-shaped module (23). The annular groove (2321) and the annular protrusion (2322) are both arranged relative to the end of the arc-shaped channel segment (231). The annular protrusion (2322) is embedded in the annular groove (2321) of the adjacent arc-shaped module (23) to achieve a sealed mating.

5. The magnet mounting structure and its motor as described in claim 4, characterized in that: A sealing ring is embedded in the annular groove (2321).

6. The magnet mounting structure and its motor as described in claim 1, characterized in that: The connector (3) includes an arc plate (31), a flange ring (32), a bolt (33), and a nut (34). The top and bottom of the periphery of the multiple arc modules (23) are symmetrically provided with arc plates (31). The end faces of the multiple arc plates (31) at the same height are provided with flange rings (32). Multiple sets of first mounting holes (321) are opened in a circle on the flange ring (32). The arc plate (31) is provided with second mounting holes (311) corresponding to the first mounting holes (321). The bolt (33) is provided through the first mounting holes (321) and the flange ring (32) and the bolt (33) is threaded to the end of the bolt (33) and the nut (34).

7. The magnet mounting structure and its motor as described in claim 6, characterized in that: Multiple heat sinks (4) are evenly arranged on the periphery of multiple arc-shaped modules (23) between two upper and lower arc-shaped plates (31), and the multiple heat sinks (4) are all arranged to avoid the hole position of the second mounting hole (311).

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