A magnetic ring structure for an outer rotor motor, an outer rotor motor and a ceiling fan

Abstract

The utility model discloses a magnetic ring structure for an outer rotor motor, an outer rotor motor and a ceiling fan. By providing a bracket avoidance hole on the mounting bracket for aligning with the decorative cover mounting hole on the motor housing, the decorative cover connecting piece can be avoided, and a sufficient mounting distance is provided to avoid interference between the decorative cover connecting piece and the magnetic ring structure and affect assembly. In addition, a blocking portion is provided in the bracket avoidance hole so that the bracket avoidance hole is open at one end and blocked at the other end. The blocking portion can prevent foreign matter such as iron filings from falling into the motor housing through the bracket avoidance hole, that is, foreign matter such as iron filings is collected in the bracket avoidance hole, and foreign matter such as iron filings is prevented from falling into the inner side of the motor housing to cause the motor to get stuck or generate noise, thereby ensuring the normal operation of the motor.

Description

[Technical field]

[0001] The utility model relates to a magnetic ring structure for an outer rotor motor, an outer rotor motor and a ceiling fan. [Background technology]

[0002] A common motor includes a stator assembly and a rotor assembly. The structure of the motor varies according to different usage scenarios. For example, the stator assembly of a motor used in a ceiling fan includes a stator shaft, through which the stator assembly is fixedly connected to the ceiling, and the rotor assembly includes a motor housing and a permanent magnet disposed in the motor housing. The motor housing and the permanent magnet are rotatably disposed on the stator shaft as a whole.

[0003] Nowadays, in order to ensure the beautiful decoration and simple appearance of the ceiling fan, a decorative cover is usually connected to the outside of the motor housing by screws, that is, the screws are inserted into the mounting holes of the motor housing 100 and the decorative cover 200 to fix the decorative cover to the motor housing. However, during the assembly process of the above structure, foreign matter such as iron filings may remain on the mounting holes, causing the iron filings to fall into the inside of the motor housing during the screwing process, which may cause the motor to get stuck or generate noise, which may have an adverse effect on the operation of the motor and pose certain safety hazards.

[0004] In addition, the magnetic ring structure of the outer rotor motor currently used in ceiling fans will also interfere with the above-mentioned screws. For example, the end of the screw may conflict with the magnetic ring structure, resulting in the screw not being installed properly, thereby affecting the installation effect.

[0005] For this reason, the present invention is studied and proposed in view of the above-mentioned problems. [Utility Model Content]

[0006] The utility model aims to overcome the deficiencies of the prior art and provides a magnetic ring structure for an outer rotor motor, an outer rotor motor and a ceiling fan. By providing a bracket avoidance hole on the mounting bracket for aligning with the decorative cover mounting hole on the motor housing, the decorative cover connecting piece can be avoided, and a sufficient installation distance is provided to avoid interference between the decorative cover connecting piece and the magnetic ring structure and affect assembly. In addition, a blocking portion is provided in the bracket avoidance hole so that the bracket avoidance hole is open at one end and blocked at the other end. The blocking portion can prevent foreign matter such as iron filings from falling into the motor housing through the bracket avoidance hole, that is, foreign matter such as iron filings is collected in the bracket avoidance hole, preventing foreign matter such as iron filings from falling into the inner side of the motor housing and causing the motor to get stuck or generate noise, thereby ensuring the normal operation of the motor.

[0007] The utility model is realized by the following technical solutions:

[0008] A magnetic ring structure for an outer rotor motor comprises a mounting bracket 1 for mounting on the inner side of a motor housing 100 and a plurality of magnetic tiles 2, wherein the plurality of magnetic tiles 2 are circumferentially distributed on the mounting bracket 1, and a bracket connecting hole 3 for aligning and connecting with a housing connecting hole 110 on the motor housing 100 is provided on the mounting bracket 1 and between two adjacent magnetic tiles 2, and a bracket avoiding hole 4 for aligning with a decorative cover mounting hole 120 on the motor housing 100 and for avoiding a decorative cover connecting piece 210 is also provided on the mounting bracket 1, and a sealing portion 5 is provided in the bracket avoiding hole 4 so that the bracket avoiding hole 4 is open at one end and blocked at the other end.

[0009] In the magnetic ring structure for an outer rotor motor as described above, the bracket avoidance hole 4 is an avoidance countersunk hole provided on the mounting bracket 1 .

[0010] As described above, in the magnetic ring structure for an outer rotor motor, the open end of the bracket avoidance hole 4 is configured to be blocked by the corresponding end of the decorative cover connecting member 210 when the decorative cover connecting member 210 is installed in the decorative cover installation hole 120 .

[0011] In the magnetic ring structure for an outer rotor motor as described above, the mounting bracket 1 is made of plastic, the magnetic tile 2 and the mounting bracket 1 are integrally injection-molded to form a whole, and the blocking portion 5 and the mounting bracket 1 are integrally injection-molded.

[0012] As described above, a magnetic ring structure for an external rotor motor, the mounting bracket 1 includes a circular ring portion 11, and a plurality of vertical ribs 12 are evenly distributed on the circular ring portion 11 in a circumferential manner. An accommodating space for accommodating a magnetic tile 2 is formed between two adjacent vertical ribs 12, and the accommodating space can partially or completely wrap the two side surfaces of the corresponding magnetic tile 2; the bracket connecting hole 3 and the bracket avoidance hole 4 are located in the corresponding vertical ribs 12.

[0013] In the magnetic ring structure for an outer rotor motor as described above, the upper and lower ends of the vertical ribs 12 protrude upward and downward from the end surface of the magnetic tile 2 respectively to form an annular truncated cone 121.

[0014] In the magnetic ring structure for an outer rotor motor as described above, the upper end of the mounting bracket 1 protrudes upward from the upper end surface of the magnetic tile 2, and the upper end of the mounting bracket 1 is used to abut against the upper part of the motor housing 100, and a first height gap is formed between the upper end surface of the magnetic tile 2 and the upper surface inside the motor housing 100; the lower end of the mounting bracket 1 protrudes downward from the lower end surface of the magnetic tile 2, and the lower end of the mounting bracket 1 is used to abut against the lower part of the motor housing 100, and a second height gap is formed between the lower end surface of the magnetic tile 2 and the lower surface inside the motor housing 100.

[0015] As described above, in a magnetic ring structure for an outer rotor motor, the upper end surface of the magnetic tile 2 is flush with or protrudes upward from the upper end of the mounting bracket 1, and the upper end surface of the magnetic tile 2 is provided with a first buffer layer for connecting to the upper surface inside the motor housing 100, and the lower end surface of the magnetic tile 2 is flush with or protrudes downward from the lower end of the mounting bracket 1, and the lower end surface of the magnetic tile 2 is provided with a second buffer layer for connecting to the lower surface inside the motor housing 100.

[0016] As described above, in the magnetic ring structure for an outer rotor motor, the first buffer layer is formed by plastic injection molding on the mounting bracket 1 and separates the upper end surface of the magnetic tile 2 from the motor housing 100, and the second buffer layer is formed by plastic injection molding on the mounting bracket 1 and separates the lower end surface of the magnetic tile 2 from the motor housing 100.

[0017] The utility model also provides an outer rotor motor, comprising a motor body, wherein the motor body comprises the magnetic ring structure for the outer rotor motor as described above.

[0018] The utility model also provides a ceiling fan, comprising a ceiling fan main body, wherein the ceiling fan main body comprises the outer rotor motor as described above.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] 1. The utility model provides a bracket avoidance hole on the mounting bracket for aligning with the decorative cover mounting hole on the motor housing, so as to avoid the decorative cover connecting parts and provide a sufficient installation distance to avoid the decorative cover connecting parts from interfering with the magnetic ring structure and affecting the assembly; in addition, a blocking portion is provided in the bracket avoidance hole so that the bracket avoidance hole is open at one end and blocked at the other end, and the blocking portion can prevent foreign matter such as iron filings from falling into the motor housing through the bracket avoidance hole, that is, foreign matter such as iron filings is collected in the bracket avoidance hole, preventing foreign matter such as iron filings from falling into the inner side of the motor housing and causing the motor to get stuck or generate noise, thereby ensuring the normal operation of the motor.

[0021] 2. The utility model utilizes a mounting bracket made of plastic to fix a plurality of magnetic tiles. All magnetic tiles are integrally injection molded with the mounting bracket, thereby ensuring accurate positioning of the magnetic tiles and reducing the installation process of the magnetic tiles. In addition, the magnetic ring structure has a small number of parts, is easy to produce and install, and has a low manufacturing cost. In addition, a bracket connecting hole for aligning and connecting with the shell connecting hole on the motor housing is provided on the mounting bracket and between two adjacent magnetic tiles, and a connecting piece is then inserted into the shell connecting hole and the bracket connecting hole to connect and fix the magnetic ring structure to the motor housing, thereby separating adjacent magnetic tiles and ensuring that the magnetic tiles do not interfere with each other. At the same time, it has the characteristics of stable connection and compact structure.

[0022] 3. The wrapping structure of the mounting bracket of the utility model for the magnetic tile is very simple, and the magnetic tile can be fixed with a small amount of glue injection, thereby reducing costs.

Brief Description of the Drawings

[0023] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a structural schematic diagram of the magnetic ring structure in the utility model.

[0025] Figure 2 This is one of the cross-sectional views of the magnetic ring structure in the utility model.

[0026] Figure 3 This is the second cross-sectional view of the magnetic ring structure in the present utility model.

[0027] Figure 4 It is a cross-sectional view of the outer rotor motor and ceiling fan in the utility model.

[0028] Figure 5 It is an exploded view of the outer rotor motor and ceiling fan in the utility model.

[0029] Figure 6 for Figure 2 A is an enlarged schematic diagram.

[0030] Figure 7 for Figure 4 A magnified schematic diagram of B. [Specific implementation method]

[0031] The following is combined with Figure 1-7 The implementation modes of the present utility model are described in detail.

[0032] like Figure 1-7As shown, the utility model is a magnetic ring structure for an outer rotor motor, comprising a mounting bracket 1 for mounting on the inner side of a motor housing 100 and a plurality of magnetic tiles 2, wherein the plurality of magnetic tiles 2 are circumferentially distributed on the mounting bracket 1, and a bracket connecting hole 3 for aligning and connecting with a housing connecting hole 110 on the motor housing 100 is provided on the mounting bracket 1 and between two adjacent magnetic tiles 2, and a bracket avoidance hole 4 for aligning with a decorative cover mounting hole 120 on the motor housing 100 and for avoiding a decorative cover connector 210 is further provided on the mounting bracket 1, and a sealing portion 5 is provided in the bracket avoidance hole 4 so that the bracket avoidance hole 4 is open at one end and blocked at the other end. The utility model provides a bracket avoidance hole on the mounting bracket for aligning with the decorative cover mounting hole on the motor housing, so that the decorative cover connecting piece can be avoided, and a sufficient installation distance is provided to avoid the decorative cover connecting piece from interfering with the magnetic ring structure and affecting the assembly; in addition, a blocking portion is provided in the bracket avoidance hole so that the bracket avoidance hole is open at one end and blocked at the other end, and the blocking portion can prevent foreign matter such as iron filings from falling into the motor housing through the bracket avoidance hole, that is, foreign matter such as iron filings are collected in the bracket avoidance hole, preventing foreign matter such as iron filings from falling into the inner side of the motor housing and causing the motor to get stuck or generate noise, thereby ensuring the normal operation of the motor.

[0033] The utility model provides a bracket connecting hole on the mounting bracket and between two adjacent magnetic tiles, which is used to align and connect with the shell connecting hole on the motor shell, and then passes a connecting piece through the shell connecting hole and the bracket connecting hole to connect and fix the magnetic ring structure in the motor shell. This can separate the adjacent magnetic tiles and ensure that the magnetic tiles do not interfere with each other. At the same time, it has the characteristics of stable connection and compact structure.

[0034] Preferably, in order to facilitate avoidance, the bracket avoidance hole 4 is an avoidance countersunk hole provided on the mounting bracket 1. Alternatively, the open end of the bracket avoidance hole 4 has a guiding slope to facilitate the corresponding end of the decorative cover connector 210 to extend therein.

[0035] The open end of the bracket avoidance hole 4 is configured to be blocked by the corresponding end of the decorative cover connecting part 210 when the decorative cover connecting part 210 is installed in the decorative cover mounting hole 120, and then cooperates with the sealing part 5 to completely block the upper and lower open ends of the bracket avoidance hole 4, thereby blocking the iron filings placed in the bracket avoidance hole 4, effectively preventing the iron filings from falling out of the bracket avoidance hole 4 to the outside (i.e., the inside of the motor housing).

[0036] The mounting bracket 1 is made of plastic, the magnetic tile 2 and the mounting bracket 1 are integrally injection molded to form a whole, and the blocking portion 5 is integrally injection molded with the mounting bracket 1. The utility model uses a mounting bracket made of plastic to fix a plurality of magnetic tiles, and all magnetic tiles are integrally injection molded with the mounting bracket, thereby ensuring accurate positioning of the magnetic tiles, reducing the installation process of the magnetic tiles, and the number of parts of the magnetic ring structure is small, the production and installation are simple, and the manufacturing cost is low.

[0037] like Figure 1-3 As shown, the mounting bracket 1 includes a circular ring portion 11, on which a plurality of vertical ribs 12 are evenly distributed in a circumferential manner, and an accommodating space for accommodating one magnetic tile 2 is formed between two adjacent vertical ribs 12, and the accommodating space can partially or completely wrap the two side surfaces of the corresponding magnetic tile 2; the bracket connecting hole 3 and the bracket avoidance hole 4 are located in the corresponding vertical ribs 12. The mounting bracket of the utility model has a very simple wrapping structure for the magnetic tile, and the magnetic tile can be fixed with a small amount of glue injection, thereby reducing costs.

[0038] like Figure 1-3 As shown, in order to avoid rigid contact between the upper and lower ends of the magnetic tile and the motor housing and cause the magnetic tile to break, the upper and lower ends of the vertical ribs 12 protrude upward and downward from the end surface of the magnetic tile 2 to form an annular truncated cone 121.

[0039] In other embodiments, in order to avoid rigid contact between the upper and lower ends of the magnetic tile and the motor housing, which may cause the magnetic tile to break, the upper end of the mounting bracket 1 protrudes upward from the upper end surface of the magnetic tile 2, and the upper end of the mounting bracket 1 is used to abut against the upper part of the motor housing 100, and a first height gap is formed between the upper end surface of the magnetic tile 2 and the upper surface inside the motor housing 100; the lower end of the mounting bracket 1 protrudes downward from the lower end surface of the magnetic tile 2, and the lower end of the mounting bracket 1 is used to abut against the lower part of the motor housing 100, and a second height gap is formed between the lower end surface of the magnetic tile 2 and the lower surface inside the motor housing 100.

[0040] In other embodiments, in order to avoid rigid contact between the upper and lower ends of the magnetic tile and the motor housing, which may cause the magnetic tile to break, the upper end surface of the magnetic tile 2 is level with or protrudes upward from the upper end of the mounting bracket 1, and the upper end surface of the magnetic tile 2 is provided with a first buffer layer for connecting with the upper surface inside the motor housing 100, and the lower end surface of the magnetic tile 2 is level with or protrudes downward from the lower end of the mounting bracket 1, and the lower end surface of the magnetic tile 2 is provided with a second buffer layer for connecting with the lower surface inside the motor housing 100. The first buffer layer is formed by plastic injection molding on the mounting bracket 1 and separates the upper end surface of the magnetic tile 2 from the motor housing 100, and the second buffer layer is formed by plastic injection molding on the mounting bracket 1 and separates the lower end surface of the magnetic tile 2 from the motor housing 100.

[0041] The utility model discloses an outer rotor motor, comprising a motor body, wherein the motor body comprises a magnetic ring structure for an outer rotor motor as described above. Since the outer rotor motor adopts the magnetic ring structure, it can effectively prevent foreign matter such as iron filings from falling into the inner side of the motor housing, thereby causing the motor to get stuck or generate noise, thereby ensuring the normal operation of the motor.

[0042] The utility model discloses a ceiling fan, comprising a ceiling fan body, wherein the ceiling fan body comprises an outer rotor motor as described above. Since the ceiling fan adopts the magnetic ring structure, it can effectively prevent foreign matter such as iron filings from falling into the inner side of the motor housing to cause the motor to get stuck or generate noise, thereby ensuring the normal operation of the ceiling fan.

Claims

1. A magnetic ring structure for an outer rotor motor, characterized in that The invention comprises a mounting bracket (1) for mounting on the inner side of a motor housing (100) and a plurality of magnetic tiles (2), wherein the plurality of magnetic tiles (2) are circumferentially distributed on the mounting bracket (1), and a bracket connecting hole (3) for aligning and connecting with a housing connecting hole (110) on the motor housing (100) is provided on the mounting bracket (1) and between two adjacent magnetic tiles (2), and a bracket avoiding hole (4) for aligning with a decorative cover mounting hole (120) on the motor housing (100) and for avoiding a decorative cover connecting piece (210) is also provided on the mounting bracket (1), and a blocking portion (5) is provided in the bracket avoiding hole (4) so ​​that the bracket avoiding hole (4) is open at one end and blocked at the other end.

2. The magnetic ring structure for an outer rotor motor according to claim 1, characterized in that The bracket avoidance hole (4) is an avoidance countersunk hole provided on the mounting bracket (1).

3. The magnetic ring structure for an outer rotor motor according to claim 1, characterized in that The open end of the bracket avoidance hole (4) is configured to be blocked by the corresponding end of the decorative cover connecting member (210) when the decorative cover connecting member (210) is installed in the decorative cover installation hole (120).

4. A magnetic ring structure for an outer rotor motor according to any one of claims 1 to 3, characterized in that The mounting bracket (1) is made of plastic, the magnetic tile (2) and the mounting bracket (1) are integrally injection-molded to form a whole, and the blocking portion (5) and the mounting bracket (1) are integrally injection-molded.

5. The magnetic ring structure for an outer rotor motor according to claim 4, characterized in that The mounting bracket (1) comprises a circular ring portion (11), on which a plurality of vertical ribs (12) are evenly distributed in a circumferential manner, and between two adjacent vertical ribs (12) a receiving space for receiving a magnetic tile (2) is formed, and the receiving space can partially or completely wrap the two side surfaces of the corresponding magnetic tile (2); the bracket connecting hole (3) and the bracket avoiding hole (4) are located in the corresponding vertical ribs (12).

6. The magnetic ring structure for an outer rotor motor according to claim 5, characterized in that The upper and lower ends of the vertical ribs (12) protrude upward and downward respectively from the end surface of the magnetic tile (2) to form an annular truncated cone (121).

7. The magnetic ring structure for an outer rotor motor according to claim 4, characterized in that The upper end of the mounting bracket (1) protrudes upward from the upper end surface of the magnetic tile (2), and the upper end of the mounting bracket (1) is used to abut against the upper part of the motor housing (100), and a first height gap is formed between the upper end surface of the magnetic tile (2) and the upper surface inside the motor housing (100); the lower end of the mounting bracket (1) protrudes downward from the lower end surface of the magnetic tile (2), and the lower end of the mounting bracket (1) is used to abut against the lower part of the motor housing (100), and a second height gap is formed between the lower end surface of the magnetic tile (2) and the lower surface inside the motor housing (100).

8. The magnetic ring structure for an outer rotor motor according to claim 4, characterized in that The upper end surface of the magnetic tile (2) is flush with or protrudes upward from the upper end of the mounting bracket (1), and the upper end surface of the magnetic tile (2) is provided with a first buffer layer for connecting to the upper surface inside the motor housing (100); the lower end surface of the magnetic tile (2) is flush with or protrudes downward from the lower end of the mounting bracket (1), and the lower end surface of the magnetic tile (2) is provided with a second buffer layer for connecting to the lower surface inside the motor housing (100).

9. An outer rotor motor, characterized in that It comprises a motor body, wherein the motor body comprises a magnetic ring structure for an outer rotor motor as claimed in any one of claims 1-8.

10. A ceiling fan, characterized in that It comprises a ceiling fan main body, and the ceiling fan main body comprises an outer rotor motor as claimed in claim 9.

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