Waterproof motor

Abstract

The utility model relates to a waterproof motor which comprises a stator assembly and a rotor assembly. The stator assembly comprises a winding stator and a motor shaft fixedly connected with the winding stator. The rotor assembly comprises a magnetic ring rotor, a motor cover and a motor shell provided with a containing cavity, and the magnetic ring rotor is located in the containing cavity and fixedly connected with the motor shell or the motor cover; the winding stator is located in the magnetic ring rotor, the end of the motor shaft extends out of the motor shell and / or the motor cover, the motor cover is in a sheet shape and is provided with a through hole, the motor shell is provided with an installation edge attached to the motor cover, and the installation edge is provided with a connecting hole edge opposite to the motor cover. The connecting screw is a conical head screw, and the conical head of the connecting screw penetrates through the through hole to be in threaded connection with the interior of the connecting hole edge. The waterproof structure is simple in structure, convenient to assemble and capable of guaranteeing that water cannot enter the containing cavity easily, and the waterproof performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a waterproof motor used for ceiling fans and the like. Background Art

[0002] CN114765395A discloses a waterproof motor, comprising: a stator, arranged on a motor housing; a rotor, arranged in the motor housing; a rotating shaft, connected to the rotor and extending out of the motor housing; a circuit board, arranged in the motor housing, and an inner end cover surrounding the rotating shaft and extending radially along the rotating shaft is also arranged in the motor housing between the rotor and the circuit board.

[0003] The motor shell and the motor cover of the waterproof motor are engaged and fixed, and the structure is complex and the assembly is troublesome. Utility Model Content

[0004] One purpose of the utility model is to solve or alleviate the above technical problems.

[0005] The utility model adopts the following means: it comprises a stator assembly and a rotor assembly; the stator assembly comprises a winding stator and a motor shaft fixedly connected to the winding stator; the rotor assembly comprises a magnetic ring rotor, a motor cover and a motor shell provided with a containing cavity, the magnetic ring rotor is located in the containing cavity and is fixedly connected to the motor shell or the motor cover; the winding stator is located in the magnetic ring rotor, the end of the motor shaft extends from the motor shell and / or the motor cover, the motor cover is sheet-shaped and is provided with a through hole, the motor shell is provided with a mounting edge that fits the motor cover, the mounting edge is provided with a connecting hole edge that faces away from the motor cover, the connecting screw is a cone head screw, and the cone head of the connecting screw passes through the through hole and is threadedly connected to the inside of the connecting hole edge.

[0006] The utility model has the following effects: the structure is simple, the assembly is convenient, and it is possible to ensure that water is difficult to enter the accommodating cavity, thereby improving the waterproof property.

[0007] A further technical solution also includes a sealing ring with elasticity, the motor housing is provided with a sealing ring groove, the sealing ring is located in the sealing ring groove, and the motor housing and the motor cover clamp the sealing ring.

[0008] The waterproof effect can be further improved.

[0009] According to a further technical solution, the edge of the motor cover is provided with an outer edge of the motor cover facing the motor housing, and the outer edge of the motor cover is a closed ring when viewed from above.

[0010] The versatility of the waterproof motor can be improved.

[0011] According to a further technical solution, the motor cover is provided with a mounting hole edge facing the motor housing.

[0012] According to a further technical solution, the outer diameter of the mounting edge is smaller than the minimum distance from the mounting hole edge to the motor shaft centerline.

[0013] It can prevent the screws for installing the blades from being too long and pressing against the winding stator, causing damage to the winding stator; it can ensure the creepage distance and also allow the overall thickness of the waterproof motor to be smaller.

[0014] According to a further technical solution, the mounting edge is arranged toward the motor housing.

[0015] According to a further technical solution, the motor housing and the motor cover are provided with bearing grooves, and the bearings are embedded in the bearing grooves and fixedly connected to the motor shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a waterproof motor according to an embodiment of the utility model.

[0017] Figure 2 It is a three-dimensional exploded schematic diagram of a waterproof motor according to an embodiment of the utility model.

[0018] Figure 3 It is a top view schematic diagram of a waterproof motor according to an embodiment of the utility model.

[0019] Stator assembly 1; winding stator 11; motor shaft 12; rotor assembly 2; magnetic ring rotor 21; motor housing 22; mounting edge 221; connecting hole edge 222; sealing ring groove 223; motor cover 23; through hole 232; motor cover outer edge 234; mounting hole edge 239; sealing ring 3; connecting screw 8; bearing 9; bearing groove 19. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model will be described below with reference to the accompanying drawings of the specification.

[0021] As a specific embodiment, the waterproof motor of the embodiment of the utility model includes a stator assembly 1 and a rotor assembly 2 .

[0022] The stator assembly 1 includes a winding stator 11 and a motor shaft 12 fixedly connected to the winding stator 11 .

[0023] The rotor assembly 2 includes a magnetic ring rotor 21, a motor cover 23, and a motor housing 22 provided with a receiving cavity (not shown in the drawings), wherein the magnetic ring rotor 21 is located in the receiving cavity and is fixedly connected to the motor housing 22 or the motor cover 23. For example, the magnetic ring rotor 21 is bonded to the inner side wall of the receiving cavity of the motor housing 22 by glue.

[0024] The winding stator 11 is located inside the magnetic ring rotor 21, and the two ends of the motor shaft 12 extend from the motor housing 22 and the motor cover 23 respectively. Of course, only one end of the motor shaft 12 may extend from the motor housing 22 or the motor cover 23. It is easy to understand that the end of the motor shaft 12 extends from the motor housing 22 and / or the motor cover 23. After the winding stator 11 is energized, the magnetic force between the winding stator 11 and the magnetic ring rotor 21 causes the magnetic ring rotor 21 to rotate relative to the winding stator 11, thereby driving the motor housing 22 and the motor cover 23 to rotate and outputting a rotational power that drives the blades and the like to rotate. Usually, the motor housing 22 and the motor cover 23 are provided with a bearing groove 19, and the bearing 9 is embedded in the bearing groove 19 and fixedly connected to the motor shaft 12. The bearing 9 needs to be a waterproof sealed bearing.

[0025] The motor cover 23 is sheet-shaped and is provided with a through hole 232. The motor housing 22 is provided with a mounting edge 221 that fits the motor cover 23. The mounting edge 221 is provided with a connecting hole edge 222 that faces away from the motor cover 23. The connecting screw 8 is a cone-head screw and the cone head of the connecting screw 8 (the cone head is generally truncated cone-shaped) passes through the through hole 232 and is threadedly connected to the internal portion of the connecting hole edge 222.

[0026] The working principle is that when a ceiling fan using the waterproof motor of the embodiment of the utility model is used outdoors, if a lot of water drips or accumulates on the motor cover 23 due to rain, fog, etc., only a small amount of water can contact the gap between the mounting edge 221 and the motor cover 23 due to the presence of the connecting hole edge 222. In other words, the water higher than the gap between the mounting edge 221 and the motor cover 23 will be blocked by the connecting hole edge 222; in addition, the cone head of the connecting screw 8 passes through the motor cover 23 and squeezes the bottom end of the inner cavity of the connecting hole edge 222, which has a simple structure and is easy to assemble, and can ensure that water is difficult to enter the accommodating cavity, thereby improving the waterproof performance.

[0027] As one of the specific embodiments, it also includes an elastic sealing ring 3, the motor housing 22 is provided with a sealing ring groove 223, the sealing ring 3 is located in the sealing ring groove 223, and the motor housing 22 and the motor cover 23 clamp the sealing ring 3. The sealing ring 3 is made of rubber or the like and has a circular cross section, which can further improve the waterproof effect.

[0028] As one of the specific implementations, the motor cover 23 is provided with a motor cover outer edge 234 facing the motor housing 22, and the motor cover outer edge 234 is a closed ring, such as a circular ring, when viewed from above. When the motor cover 23 is located above the motor housing 22 and the waterproof motor is used in reverse, water dripping or accumulated on the motor cover 23 will drip along the motor cover outer edge 234 and will not contact the gap between the motor housing 22 and the motor cover 23, which can improve the versatility of the waterproof motor.

[0029] As one of the specific implementations, the motor cover 23 is provided with a mounting hole edge 239 facing the motor housing 22 .

[0030] As one of the specific implementations, the outer diameter of the mounting edge 221 is smaller than the minimum distance from the mounting hole edge 239 to the axis of the motor shaft 12 (i.e., the distance from the outer wall of the mounting hole edge 239 to the axis of the motor shaft 12). Compared with the traditional implementation in which the maximum distance from the mounting hole edge 239 to the axis of the motor shaft 12 is smaller than the inner diameter of the mounting edge 221, when the screw passes through the blade and is screwed into the mounting hole edge 239, the screw will not abut against the winding stator 11 regardless of its length, which can prevent the screw of the mounting blade from abutting against the winding stator 11 and causing damage to the winding stator 11; the distance between the screws of the winding stator 11 is also not increased, which can ensure the creepage distance and also allow the overall thickness of the waterproof motor to be smaller.

[0031] As one of the specific implementations, the mounting edge 221 is disposed toward the motor housing 22 .

[0032] As used in this utility model, the terms: first, second, etc., do not indicate any order, quantity or importance, but are only used for distinction.

[0033] As used in the present invention, the terms "a", "an", etc. do not indicate a limitation of quantity, but rather indicate the presence of at least one of the referenced object.

[0034] For example, the terms indicating orientation or position used in the present invention, such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are intended to reflect relative positions rather than absolute positions.

[0035] As used in the present invention, terms such as approximately, overall, approximately, and similar are limiting terms that indicate that a feature exists but a certain deviation is allowed. The amount of the certain deviation allowed may vary depending on the specific context; for example, the specific context that may depend on the deviation of a dimension includes but is not limited to the national standard for dimensional tolerance.

Claims

1. A waterproof motor, comprising a stator assembly (1) and a rotor assembly (2); the stator assembly (1) comprises a winding stator (11) and a motor shaft (12) fixedly connected to the winding stator (11); the rotor assembly (2) comprises a magnetic ring rotor (21), a motor cover (23) and a motor housing (22) provided with a receiving cavity, the magnetic ring rotor (21) being located in the receiving cavity and fixedly connected to the motor housing (22) or the motor cover (23); the winding stator (11) is located in the magnetic ring rotor (21), and the end of the motor shaft (12) protrudes from the motor housing (22) and / or the motor cover (23), wherein: The motor cover (23) is in sheet shape and is provided with a through hole (232); the motor housing (22) is provided with a mounting edge (221) that fits the motor cover (23); the mounting edge (221) is provided with a connecting hole edge (222) that faces away from the motor cover (23); the connecting screw (8) is a cone head screw, and the cone head of the connecting screw (8) passes through the through hole (232) and is threadedly connected to the inner portion of the connecting hole edge (222).

2. The waterproof motor according to claim 1, characterized in that: It also includes an elastic sealing ring (3), the motor housing (22) is provided with a sealing ring groove (223), the sealing ring (3) is located in the sealing ring groove (223), and the motor housing (22) and the motor cover (23) clamp the sealing ring (3).

3. The waterproof motor according to claim 1, characterized in that: The edge of the motor cover (23) is provided with a motor cover outer edge (234) facing the motor housing (22); the motor cover outer edge (234) is a closed ring when viewed from above.

4. The waterproof motor according to claim 3, characterized in that: The motor cover (23) is provided with a mounting hole edge (239) facing the motor housing (22).

5. The waterproof motor according to claim 4, characterized in that: The outer diameter of the mounting edge (221) is smaller than the minimum distance from the mounting hole edge (239) to the axis center line of the motor shaft (12).

6. The waterproof motor according to claim 5, characterized in that: The mounting edge (221) is arranged toward the motor housing (22).

7. The waterproof motor according to claim 1, characterized in that: The motor housing (22) and the motor cover (23) are provided with a bearing groove (19), and the bearing (9) is embedded in the bearing groove (19) and fixedly connected to the motor shaft (12).

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