Outer rotor type weather-resistant vehicle-mounted air blowing mechanism

Abstract

The utility model belongs to the technical field of vehicle-mounted air blowing mechanisms, and particularly relates to an outer rotor type weather-resistant vehicle-mounted air blowing mechanism which comprises an outer rotor motor, an airtight protective shell, a barrel impeller and an impeller air guide cover, the outer rotor motor is installed in the airtight protective shell, and a shell upper cover is detachably installed on the airtight protective shell. An output shaft of the outer rotor motor protrudes out of the airtight protective shell and is coaxially connected with the barrel impeller, an air inlet and an air outlet groove are formed in the positions, corresponding to an air suction opening and an air outlet side face of the barrel impeller, of the impeller air guide cover respectively, and an air cover upper cover is detachably installed on the impeller air guide cover. The air blowing mechanism is compact in size, convenient to assemble, good in weather resistance and capable of meeting the higher and higher performance requirements of a vehicle-mounted air blower.

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 vehicle-mounted blower mechanism. Background Technology

[0002] The airflow from the air conditioning vents in a car parking garage is typically provided by an onboard blower. Given that vehicles frequently require rapid temperature adjustments during use, such as when a vehicle parked outdoors in direct sunlight needs to quickly activate its blower and air conditioning for cooling, and considering the need to minimize vehicle weight, the size of the blower mechanism is strictly controlled. Therefore, compared to internal rotor motors, external rotor motors, with their higher torque and stiffer operation, provide faster and more powerful airflow and are more suitable for driving onboard blowers of the same specifications.

[0003] Currently, common vehicle-mounted air blower mechanisms on the market, such as the patent document with patent number CN202410105060.3 entitled "An Energy-Saving Motor Assembly for Vehicle Air Conditioning", include a motor integrated air duct. A motor assembly (3) is disposed inside the upper part of the motor integrated air duct (1). A battery (2) is disposed on the top of the motor assembly (3). Air shrouds (4) are symmetrically disposed on both sides of the motor assembly (3). A motor cover (12) adapted to the motor assembly (3) is disposed above the middle part of the motor integrated air duct (1). Air shrouds (4) are respectively disposed above the sides of the motor integrated air duct (1). A shroud cover (11) adapted to the shroud (4); the battery (2) is fixedly installed on the upper surface of the motor cover (12), and a controller (21) is provided at the front end of the battery (2); the motor assembly (3) includes an integrated stator frame (31) and a bearing cover (32), a stator core (34) is fixedly installed inside the integrated stator frame (31), a double-strand copper winding group (35) is wound on the outer surface of the stator core (34), a plastic magnetic rotor (36) is provided in the middle of the stator core (34), and a rotating shaft (37) is fixedly installed in the middle of the plastic magnetic rotor (36).

[0004] However, the aforementioned blower mechanism design is relatively complex and bulky. Although it has significantly improved the heat dissipation performance of the inner rotor motor, it cannot be adapted to the outer rotor and lacks weather resistance, making it unable to meet increasingly stringent automotive-grade requirements. Utility Model Content

[0005] To address the issues of existing vehicle-mounted blower mechanisms being complex in design, bulky, lacking weather resistance, and unable to meet increasingly stringent automotive standards and user demands, we offer an external rotor type weather-resistant vehicle-mounted blower mechanism.

[0006] An external rotor type weather-resistant vehicle-mounted blower mechanism includes an external rotor motor, an airtight protective shell, a cylindrical impeller, and an impeller guide shroud. The external rotor motor is installed in the airtight protective shell, and a shell cover is detachably installed on the airtight protective shell. The output shaft of the external rotor motor protrudes from the airtight protective shell and is coaxially connected to the cylindrical impeller. An air inlet and an air outlet slot are respectively provided on the air inlet and outlet sides of the impeller corresponding to the air inlet of the cylindrical impeller. A shroud cover is detachably installed on the impeller guide shroud.

[0007] Furthermore, the airtight protective shell and the impeller guide shroud are both mounted on the supporting base plate, and the airtight protective shell, the impeller guide shroud and the supporting base plate are integrally formed.

[0008] Furthermore, the middle part of the cylindrical impeller is fixedly connected to the output shaft, and both ends of the cylindrical impeller are provided with suction openings.

[0009] Furthermore, the air inlet is funnel-shaped from the outside in.

[0010] Furthermore, the opening area of ​​the airtight protective shell corresponding to the shell cover is larger than the vertical projected area of ​​the outer rotor motor, and the opening area of ​​the impeller guide shroud corresponding to the wind shroud cover is larger than the horizontal projected area of ​​the cylindrical impeller.

[0011] Furthermore, bolt holes are provided at the four corners of the housing cover and the wind shroud cover, and internal thread seats are provided on the airtight protective housing and the impeller wind guide cover corresponding to the bolt holes.

[0012] Furthermore, a flexible cable outlet is installed on the airtight protective shell, and the flexible cable outlet is provided with a cable outlet guide groove that runs through both the inner and outer sides of the airtight protective shell.

[0013] Furthermore, a support member is bolted to the end face of the external rotor motor, and the support member is fixedly connected to the inner side of the airtight protective shell. A sealed bearing is sleeved on the output shaft of the external rotor motor, and the sealed bearing is installed on the side of the airtight protective shell.

[0014] Furthermore, the external rotor motor is a dual-output shaft motor, with sealed bearings fitted on both ends of the output shaft. Soft washers are wrapped around the outside of the sealed bearings and are installed on the left and right sides of the airtight protective shell.

[0015] Furthermore, the cylindrical impeller is provided with a reverse threaded groove in the middle, and the output shaft of the external rotor motor is threaded into the reverse threaded groove. The rotation direction of the reverse threaded groove is opposite to the rotation direction of the external rotor motor.

[0016] The advantages of this utility model are:

[0017] 1. It has a compact structure and good weather resistance, which can ensure the continuous and stable operation of the external rotor motor.

[0018] 2. With fewer parts, assembly can be completed simply by placing the external rotor motor and cylindrical impeller into the outer casing and closing the cover, making it easy to operate.

[0019] 3. The cylindrical impeller also has an air inlet on the side near the motor, which not only has high air blowing efficiency, but also drives the air flow near the motor to improve heat dissipation performance.

[0020] 4. Symmetrical soft pad rings can be used as supports to fix the external rotor motor on the airtight protective shell, suppressing operating vibration and providing high airtightness. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a schematic diagram of an external rotor type weather-resistant vehicle-mounted blower mechanism;

[0023] Figure 2 This is a schematic diagram of the other side of the external rotor type weather-resistant vehicle-mounted blower mechanism;

[0024] Figure 3 Exploded structural diagram of an external rotor type weather-resistant vehicle-mounted blower mechanism;

[0025] Figure 4 This is an exploded structural diagram of an external rotor motor;

[0026] Figure 5 A structural diagram of an external rotor motor with an independent airtight protective housing.

[0027] Attached image labels:

[0028] 1. External rotor motor; 101. Output shaft; 102. Sealed bearing; 103. Support component; 2. Airtight protective shell; 201. Shell cover; 3. Cylindrical impeller; 4. Impeller guide shroud; 401. Wind shroud cover; 402. Air inlet; 403. Air outlet slot; 5. Support base plate; 6. Bolt hole; 7. Internal thread seat; 8. Bolt; 9. Soft cable outlet seat; 901. Cable outlet guide slot; 10. Soft gasket ring. Detailed Implementation

[0029] To address the issue of the lack of fan structures using external rotor motors in existing parking air conditioning solutions, which typically require the independent 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 vehicle-mounted blower mechanism.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] like Figures 1 to 4 As shown, this embodiment provides an external rotor type weather-resistant vehicle-mounted blower mechanism, including an external rotor motor 1, an airtight protective shell 2, a cylindrical impeller 3, and an impeller guide cover 4. The external rotor motor 1 is installed in the airtight protective shell 2. A shell cover 201 is detachably installed on the airtight protective shell 2. The output shaft 101 of the external rotor motor 1 protrudes from the airtight protective shell 2 and is coaxially connected to the cylindrical impeller 3. An air inlet 402 and an air outlet 403 are respectively provided on the impeller guide cover 4 corresponding to the air intake opening and air outlet side of the cylindrical impeller 3. A wind cover cover 401 is detachably installed on the impeller guide cover 4.

[0034] Because the external rotor motor 1 is installed in the airtight protective housing 2, it has good weather resistance and will not be damaged by rainwater, dust, or other foreign objects. The structure is also relatively simple. During assembly, simply insert the external rotor motor 1 and the cylindrical impeller 3 into the openings of the airtight protective housing 2 and the impeller guide shroud 4, then close the housing cover 201 and the shroud cover 401. Assembly and disassembly are convenient and quick.

[0035] The airtight protective shell 2 and the impeller guide shroud 4 are both mounted on the supporting base plate 5, and the airtight protective shell 2, the impeller guide shroud 4 and the supporting base plate 5 are integrally formed. In this embodiment, the lower half of the airtight protective shell 2 and the impeller guide shroud 4 without the cover and the supporting base plate 5 are integrally injection molded, resulting in a compact volume and high structural strength.

[0036] It is worth mentioning that, such as Figure 5 As shown, in addition to the integrated housing, the external rotor motor 1 can also be sealed using a separate airtight protective housing 2 and a housing cover 201 so that it can be installed in any air guide shroud for use.

[0037] The cylindrical impeller 3 is fixedly connected to the output shaft 101 at its middle part, and air intake openings are provided at both ends of the cylindrical impeller 3. The air intake design on both sides of the cylindrical impeller 3 has high air blowing efficiency, and the air intake opening on the side closer to the external rotor motor 1 can drive the airflow in the vicinity, thereby improving the heat dissipation effect of the external rotor motor 1.

[0038] The air inlet 402 is funnel-shaped from the outside to the inside, which can increase the air flow rate and promote the airflow to be drawn into the cylindrical impeller 3.

[0039] The opening area of ​​the airtight protective shell 2 corresponding to the shell cover 201 is larger than the vertical projected area of ​​the outer rotor motor 1, and the opening area of ​​the impeller guide shroud 4 corresponding to the shroud cover 401 is larger than the horizontal projected area of ​​the cylindrical impeller 3. The larger openings facilitate the placement of components into the shell, and the operation requires lower precision.

[0040] Bolt holes 6 are provided at the four corners of the housing cover 201 and the wind hood cover 401. Internal threaded seats 7 are provided on the airtight protective shell 2 and the impeller guide hood 4 corresponding to the bolt holes 6. The cover body fixed with bolts 8 is easy to install and remove and is stably positioned.

[0041] A flexible cable outlet 9 is installed on the airtight protective shell 2. The flexible cable outlet 9 has a cable guide groove 901 that runs through both the inner and outer sides of the airtight protective shell 2. In this embodiment, the flexible cable outlet 9 is made of silicone, which can wrap around the wires of the outer rotor motor 1 leading out of the airtight protective shell 2 to ensure airtightness. Moreover, the flexible cable outlet 9 will deflect with the wire when the wire is bent, avoiding the hard shell pressing on the wire, which could lead to wire damage or even breakage.

[0042] A sealed bearing 102 is sleeved on the output shaft 101 of the external rotor motor 1, and the sealed bearing 102 is installed on the side of the airtight protective shell 2.

[0043] A support member 103 is connected to the end face of the external rotor motor 1 via bolts 8. The support member 103 is fixedly connected to the inner side of the airtight protective shell 2. A sealed bearing 102 is sleeved on the output shaft 101 of the external rotor motor 1, and the sealed bearing 102 is installed on the side of the airtight protective shell 2. The sealed bearing 102 is a commonly used type of bearing on the market. While ensuring the weather-resistant and airtight performance inside the airtight protective shell 2, it avoids friction and wear between the rotating output shaft 101 and the airtight protective shell 2. The support member 103 can improve the connection stability between the external rotor motor 1 and the airtight protective shell 2, and improve the operating stability of the external rotor motor 1.

[0044] In this embodiment, the external rotor motor 1 is a dual-output shaft motor. One end of the output shaft 101 is fitted with a sealed bearing 102, and a soft washer 10 is wrapped around its outer side, which is then fixedly connected to the side of the airtight protective shell 2. The other end of the output shaft 101 is sequentially connected to a sealed bearing 102 and a support member 103. The support member 103 is wrapped with a soft washer 10, which is then fixedly connected to the other side of the airtight protective shell 2. The symmetrically designed soft washer 10 fills the gap between the sealed bearing 102, the support member 103, and the airtight protective shell 2, ensuring airtightness and providing stable support for the external rotor motor 1. Furthermore, the soft washer 10 can absorb the operating vibration of the external rotor motor 1 to a certain extent, thereby reducing the operating noise of the blower mechanism.

[0045] The cylindrical impeller 3 has a reverse threaded groove (not shown in the figure) in the middle. The output shaft 101 of the external rotor motor 1 is threaded into the reverse threaded groove. The rotation direction of the thread in the reverse threaded groove is opposite to the rotation direction of the external rotor motor 1. The threaded cylindrical impeller 3 is easy to assemble and easy to disassemble and clean.

[0046] 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 exterior rotor type weather resistant vehicle-mounted blower mechanism characterized by, The device includes an external rotor motor, an airtight protective shell, a cylindrical impeller, and an impeller guide shroud. The external rotor motor is installed in the airtight protective shell, and a shell cover is detachably installed on the airtight protective shell. The output shaft of the external rotor motor protrudes from the airtight protective shell and is coaxially connected to the cylindrical impeller. The impeller guide shroud has an air inlet and an air outlet groove on the side corresponding to the air intake opening and air outlet of the cylindrical impeller, respectively. A shroud cover is detachably installed on the impeller guide shroud.

2. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, The airtight protective shell and the impeller guide shroud are both mounted on the supporting base plate, and the airtight protective shell, the impeller guide shroud and the supporting base plate are integrally formed.

3. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, The middle part of the cylindrical impeller is fixedly connected to the output shaft, and both ends of the cylindrical impeller are provided with air intake openings.

4. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, The air inlet is funnel-shaped from the outside in.

5. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, The opening area of ​​the airtight protective shell corresponding to the shell cover is larger than the vertical projection area of ​​the outer rotor motor, and the opening area of ​​the impeller guide cover corresponding to the wind cover cover is larger than the horizontal projection area of ​​the cylindrical impeller.

6. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, Bolt holes are provided at the four corners of the shell cover and the wind shroud cover, and internal thread seats are provided on the corresponding bolt holes on the airtight protective shell and the impeller wind guide cover.

7. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, A flexible cable outlet is installed on the airtight protective shell, and the flexible cable outlet is provided with a cable outlet guide groove that runs through both the inner and outer sides of the airtight protective shell.

8. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, A support member is bolted to the end face of the external rotor motor. The support member is fixedly connected to the inner side of the airtight protective shell. A sealed bearing is sleeved on the output shaft of the external rotor motor. The sealed bearing is installed on the side of the airtight protective shell.

9. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 8, characterized in that, The external rotor motor is a dual-output shaft motor, with sealed bearings fitted on both ends of the output shaft. Soft washers are wrapped around the outside of the sealed bearings and installed on the left and right sides of the airtight protective shell.

10. The external rotor type weather-resistant vehicle-mounted blower mechanism according to claim 1, characterized in that, The cylindrical impeller has a reverse threaded groove in the middle, and the output shaft of the external rotor motor is threaded into the reverse threaded groove. The rotation direction of the reverse threaded groove is opposite to the rotation direction of the external rotor motor.

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