External rotor type weather-resistant parking air conditioner fan motor

Abstract

This utility model belongs to the technical field of external rotor motor structure, specifically relating to an external rotor type weather-resistant parking air conditioner fan motor. It includes an external rotor motor mounted in a bracket housing, with multiple mating screw holes on the external rotor motor. An output shaft protruding from the bracket housing is located in the center of the external rotor motor. The bracket housing includes an interlocking concave base and a cover. A through hole is provided in the center of the concave base corresponding to the mating screw holes, and a sealing plug is detachably installed on the outside of the through hole. The concave base is located at the center of the fan housing. The air conditioner fan external rotor motor structure provided by this utility model has good protective performance, a compact size, and facilitates the application of different types of conventional external rotor motors for parking installation, thus having significant practical value.

Description

Technical Field

[0001] This utility model relates to the technical field of external rotor motor structure, and more specifically, to an external rotor type weather-resistant parking air conditioner fan motor. Background Technology

[0002] A vehicle (parking) air conditioner consists of a compressor, condenser, throttling element, evaporator, fan, and necessary controllers. It's a system used to regulate the temperature and humidity inside the vehicle, providing a comfortable environment for passengers. With the booming development of my country's automotive industry and the increasing popularity of electric vehicle technology, the power consumption inside vehicles is no longer limited. Various entertainment and comfort features are constantly being added, and more and more users prefer to entertain and relax in their vehicles. To maintain a comfortable temperature inside the vehicle, the parking air conditioner generally needs to be continuously turned on; therefore, the industry's requirements for parking air conditioners are constantly increasing.

[0003] Currently, the fan motors of parking air conditioners generally use internal rotor motors with better sealing.

[0004] For example, in patent document CN202022957933.3, entitled "A Connection and Fixing Structure for an Air Conditioner Outdoor Unit Fan and a Parking Air Conditioner Having the Same," the disclosed parking air conditioner structure includes a base plate assembly, a condenser, an outdoor unit fan, and an outdoor unit housing arranged sequentially from bottom to top. The outdoor unit fan includes a fan impeller and a fan housing. The condenser is fitted with a clamping locking member, which is integrally formed and fixedly connected to the base plate assembly and the fan housing. The condenser is longitudinally spaced from the base plate assembly and the fan impeller. This solution ensures stable support for the outdoor unit fan without compromising its good heat dissipation performance. However, it lacks any waterproof or dustproof mechanism for the fan motor. To meet automotive-grade standards, the motor often needs to be custom-made, resulting in high manufacturing costs.

[0005] In addition, given that parking air conditioners need to be started and stopped frequently and their size is subject to strict control, external rotor motors, which have greater torque and are stiffer than internal rotor motors of the same specifications, are more suitable for driving the fans of parking air conditioners.

[0006] Therefore, it is necessary to design an external rotor motor structure that is weather-resistant and low-cost to meet the fan drive requirements of parking air conditioners. Utility Model Content

[0007] To address the issue of the lack of external rotor motors in existing parking air conditioning solutions, which typically require the separate customization of dustproof and waterproof motors before installation on the parking air conditioner, resulting in high equipment manufacturing costs, we offer an external rotor type weather-resistant parking air conditioning fan motor.

[0008] An external rotor type weather-resistant parking air conditioner fan motor includes an external rotor motor installed in a bracket housing. The external rotor motor is provided with multiple mating screw holes. An output shaft protruding from the bracket housing is provided in the middle of the external rotor motor. The bracket housing includes a recessed base and a cover that interlock with each other. A through hole is provided in the middle of the recessed base corresponding to the mating screw holes. A sealing plug is detachably installed on the outside of the through hole. The recessed base is located at the center of the fan cover.

[0009] Furthermore, a sealing gasket ring is provided between the concave base and the cover, and an annular groove is provided on the inner side of both the concave base and the cover corresponding to the sealing gasket ring.

[0010] Furthermore, the cover is provided with a screw hole protruding from the annular groove, and the recessed base is provided with an internal thread seat corresponding to the screw hole.

[0011] Furthermore, the recessed base is provided with positioning protrusions, and the cover is provided with positioning holes corresponding to the positioning protrusions, with the positioning protrusions fitting into the positioning holes.

[0012] Furthermore, a soft wire sleeve is installed on the side of the concave base, and the soft wire sleeve is provided with a wire through groove connecting the inner and outer sides of the concave base.

[0013] Furthermore, a sealing washer is installed on the bracket housing at the opening corresponding to the output shaft, and the output shaft is rotatably fitted into the sealing washer.

[0014] Furthermore, the concave base and the fan cover are integrally injection molded.

[0015] Furthermore, the outer rotor motor is enclosed within a sealed cavity formed by the concave base and the cover.

[0016] Furthermore, the cover is annular, with a motor through hole in its center. The side of the external rotor motor with the output shaft protrudes outward from the motor through hole, and the mating screw hole on the external rotor motor is located on the opposite side of the output shaft.

[0017] Furthermore, an airtight collar is provided inside the motor through hole, and the airtight collar wraps around the outer wall of the outer rotor motor.

[0018] The advantages of this utility model are:

[0019] 1. A protective housing for the external rotor motor was designed specifically for the use environment of parking air conditioners, and the fan cover was integrated into the motor housing. This makes it convenient to use conventional external rotor motors on the market for driving the fan of parking air conditioners, saving the R&D costs of developing a dedicated automotive-grade external rotor motor.

[0020] 2. A sealing plug is specially designed for the motor mounting holes facing outwards to prevent the fixing screws of the external rotor motor from being corroded and jammed, facilitating future maintenance and replacement.

[0021] 3. High degree of structural integration and relatively compact size. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1;

[0024] Figure 2 This is an exploded structural diagram of Example 1;

[0025] Figure 3 These are the top view and cross-sectional structural diagram of Embodiment 1;

[0026] Figure 4 This is a schematic diagram of the structure of an external rotor motor;

[0027] Figure 5 This is a schematic diagram of the structure of Example 2;

[0028] Figure 6 This is an exploded structural diagram of Example 2;

[0029] Figure 7 These are the top view and cross-sectional structural diagram of Embodiment 2;

[0030] Figure 8 This is an exploded structural diagram of Example 3.

[0031] Attached image labels:

[0032] 1. External rotor motor; 101. Connecting screw hole; 102. Output shaft; 2. Concave base; 201. Through hole; 202. Fan cover; 203. Internal thread seat; 204. Positioning protrusion; 205. Sealing cavity; 3. Cover; 301. Screw hole; 302. Positioning hole; 303. Motor through hole; 4. Sealing plug; 5. Sealing gasket; 6. Annular groove; 7. Soft wire sleeve; 701. Wire through groove; 8. Sealing gasket; 9. Airtight collar. Detailed Implementation

[0033] To address the issue of the lack of external rotor motors in existing parking air conditioning solutions, which typically require the separate customization of dustproof and waterproof motors before installation on the parking air conditioner, resulting in high equipment manufacturing costs, we offer an external rotor type weather-resistant parking air conditioning fan motor.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] It should be noted that the terms such as "inner", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as part of the scope of implementation of this utility model, as stated above.

[0036] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances. Example 1

[0037] like Figures 1 to 4 As shown, this embodiment provides an external rotor type weather-resistant parking air conditioner fan motor, including an external rotor motor 1 installed in a bracket housing. The external rotor motor 1 is provided with multiple mating screw holes 101. An output shaft 102 protruding from the bracket housing is provided in the middle of the external rotor motor 1. The bracket housing includes a recessed base 2 and a cover 3 that interlock with each other. A through hole 201 is provided in the middle of the recessed base 2 corresponding to the mating screw holes 101. A sealing plug 4 is detachably installed on the outside of the through hole 201. The recessed base 2 is located at the center of the fan cover 202. The recessed base 2 and the fan cover 202 are integrally injection molded.

[0038] In the production process of parking air conditioning components, a recessed base 2 with a fan cover 202 and a matching cover 3 of the corresponding size can be made according to the specifications of the parking air conditioner. Then, an external rotor motor 1 of suitable specifications is selected, and screws are installed and fixed in the recessed base 2 using the mating screw holes 101 and through holes 201. Finally, the cover 3 is installed. Because a sealing plug 4 is set, the screws in the mating screw holes 101 are prevented from being corroded and rusted by external rainwater, and water droplets are prevented from seeping into the equipment through the mating screw holes 101. The bracket housing integrates multiple functional components such as the fan rear cover, motor base, and waterproof shell, which helps to reduce the size of the equipment.

[0039] A sealing gasket 5 is provided between the concave base 2 and the cover 3, and annular grooves 6 are provided on the inner sides of both the concave base 2 and the cover 3 corresponding to the sealing gasket 5. The design of the sealing gasket 5 and the annular grooves 6 makes a tight and stable fit, which can ensure that foreign objects will not enter the housing through the mating gap between the concave base 2 and the cover 3 and interfere with the operation of the external rotor motor 1.

[0040] The cover 3 has a screw hole 301 protruding from the annular groove 6, and the recessed base 2 has an internal thread seat 203 corresponding to the screw hole 301. After the screw is installed, the screw hole 301 and the internal thread seat 203 can press the sealing gasket 5 from the outside, improving the airtightness and facilitating assembly and disassembly.

[0041] The recessed base 2 is provided with positioning protrusions 204, and the cover 3 is provided with positioning holes 302 corresponding to the positioning protrusions 204. The positioning protrusions 204 are fitted into the positioning holes 302. In order to cooperate with the external rotor motor 1, the cover 3 is generally circular. Therefore, the positioning holes 302 are designed to align with the positioning protrusions 204 to prevent the cover 3 from rotating and shifting.

[0042] A flexible wire sleeve 7 is installed on the side of the recessed base 2. The flexible wire sleeve 7 is provided with a wire through groove 701 connecting the inner and outer sides of the recessed base 2. The wires led out from the outer rotor motor 1 can pass through the wire through groove 701 and exit the bracket housing to connect to the drive circuit. The wire through groove 701 can effectively wrap the wires and prevent rainwater and dust foreign objects from entering the equipment through the gaps where the wires pass through.

[0043] A sealing gasket 8 is installed on the cover 3 at the opening corresponding to the output shaft 102, and the output shaft 102 is rotatably fitted into the sealing gasket 8. The sealing gasket 8 can prevent rainwater, dust and other foreign objects from entering the equipment through the hole through which the output shaft 102 passes.

[0044] The outer rotor motor 1 is enclosed within a sealed cavity 205 formed by the concave base 2 and the cover 3. In this embodiment, the concave base 2 and the cover 3 completely enclose the outer rotor motor 1, and the output shaft 102 passes through the sealing gasket 8 on the cover 3, resulting in a stable structure with strong weather resistance. Example 2

[0045] like Figures 5 to 7 As shown, the difference between this embodiment and Embodiment 1 is that the cover 3 is annular, with a motor through hole 303 in its center. One side of the external rotor motor 1 with its output shaft 102 protrudes outward from the motor through hole 303, and the mating screw hole 101 on the external rotor motor 1 is located on the opposite side of the output shaft 102. An airtight collar 9 is provided inside the motor through hole 303, and the airtight collar 9 wraps around the outer wall of the external rotor motor 1. In this embodiment, the bracket housing only wraps a portion of the external rotor motor 1 structure, which can be adapted to installation methods that only wrap the circuit board of the external rotor motor 1. Because part of the external rotor motor 1 is exposed and no collar is needed on the output shaft 102, this embodiment has stronger operational stability and better heat dissipation, making it suitable for operating conditions with lower weather resistance requirements. Example 3

[0046] like Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the concave base 2 and the fan cover 202 are designed to be separate and detachable, which makes it convenient to disassemble the fan cover 202 separately for cleaning during equipment maintenance.

[0047] The above description is a further detailed explanation of the present utility model in conjunction with specific preferred embodiments. It should not be assumed that the specific implementation of the present utility model is limited to these descriptions. All equivalent changes and modifications made within the scope of this application should still fall within the scope of the present utility model.

Claims

1. An external rotor type weather-resistant parking air conditioner fan motor, characterized in that, The device includes an external rotor motor installed in a bracket housing. The external rotor motor has multiple mating screw holes. An output shaft protruding from the bracket housing is located in the middle of the external rotor motor. The bracket housing includes a recessed base and a cover that interlock with each other. A through hole is provided in the middle of the recessed base corresponding to the mating screw holes. A sealing plug is detachably installed on the outside of the through hole. The recessed base is located at the center of the fan cover.

2. The external rotor type weather-resistant parking air conditioner fan motor according to claim 1, characterized in that, A sealing gasket ring is provided between the concave base and the cover, and an annular groove is provided on the inner side of both the concave base and the cover corresponding to the sealing gasket ring.

3. The external rotor type weather-resistant parking air conditioner fan motor according to claim 2, characterized in that, The faceplate is provided with screw holes protruding from the annular groove, and the concave base is provided with an internal thread seat corresponding to the screw holes.

4. The external rotor type weather-resistant parking air conditioner fan motor according to claim 1, characterized in that, The recessed base is provided with positioning protrusions, and the cover is provided with positioning holes corresponding to the positioning protrusions, with the positioning protrusions fitting into the positioning holes.

5. The external rotor type weather-resistant parking air conditioner fan motor according to claim 1, characterized in that, A soft wire sleeve is installed on the side of the concave base, and the soft wire sleeve is provided with a wire through groove connecting the inner and outer sides of the concave base.

6. The external rotor type weather-resistant parking air conditioner fan motor according to claim 1, characterized in that, A sealing gasket is installed on the bracket housing at the opening corresponding to the output shaft, and the output shaft is rotatably fitted into the sealing gasket.

7. The external rotor type weather-resistant parking air conditioner fan motor according to claim 1, characterized in that, The concave base and the fan cover are integrally injection molded.

8. The external rotor type weather-resistant parking air conditioner fan motor according to any one of claims 1-7, characterized in that, The external rotor motor is enclosed within a sealed cavity formed by the concave base and the cover.

9. The external rotor type weather-resistant parking air conditioner fan motor according to any one of claims 1-7, characterized in that, The cover is annular, with a motor through hole in the middle. The side of the external rotor motor with the output shaft protrudes outward from the motor through hole, and the mating screw hole on the external rotor motor is located on the opposite side of the output shaft.

10. The external rotor type weather-resistant parking air conditioner fan motor according to claim 9, characterized in that, An airtight collar is provided inside the motor through hole, and the airtight collar wraps around the outer wall of the outer rotor motor.

Images