Bearing mounting structure of ducted motor

Abstract

The utility model relates to the technical field of motors, in particular to a bearing mounting structure of a ducted motor, which comprises a shell, an iron core bracket arranged on the shell, a stator winding arranged on the iron core bracket, a first bearing arranged on the shell, a main shaft penetrating through the iron core bracket and protruding out of the shell, and a second bearing and a magnet arranged on the main shaft, the magnet is arranged on the outer side of the main shaft in a sleeved mode, the second bearing is contained in the iron core support, the shell is provided with a containing cavity, the first bearing is contained in the containing cavity, and the first bearing and the second bearing are arranged on the outer side of the main shaft in a sleeved mode so that the central axis of the first bearing, the central axis of the second bearing and the central axis of the main shaft can coincide. The first bearing is inserted from bottom to top for installation, the second bearing is inserted from top to bottom for installation, rapid installation is facilitated, and the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to a bearing installation structure of ducted motor. BACKGROUND

[0002] With the continuous progress of science and technology and the continuous improvement of people's life quality, the ducted motor is widely applied to the blow dryer, handheld fan, micro dust collector and the like, the ducted motor is a kind of direct-current brushless motor, compared with traditional brush motor, has higher efficiency and longer service life, the rotor of ducted motor has multiple permanent magnets, and the stator has multiple coils, the current of coil is controlled by electric control, thereby the rotating speed and direction of ducted motor are controlled.Motor bearing is a kind of component for maintaining stable operation of motor, it is mainly used for supporting main shaft, and then guaranteeing that the rotor connected with main shaft stably rotates in axial direction, however, the position of the bearing installation structure of prior art is relatively fixed, staff needs to install bearings one by one by the way of knocking in steps, which increases the difficulty of bearing installation, and the installation speed is slow, thereby affecting installation efficiency. SUMMARY

[0003] The utility model discloses a bearing installation structure of ducted motor, which realizes the insertion and installation of the first bearing from bottom to top and the insertion and installation of the second bearing from top to bottom, facilitates quick installation and improves assembly efficiency.

[0004] To achieve the above object, the utility model provides a bearing installation structure of ducted motor, which comprises a shell, an iron core support arranged in the shell, a stator winding arranged in the iron core support, a first bearing arranged in the shell, a main shaft penetrating through the iron core support and protruding out of the shell, and a second bearing and a magnet arranged on the main shaft, the magnet is sleeved on the outer side of the main shaft, the second bearing is contained in the iron core support, the shell is provided with a containing cavity, the first bearing is contained in the containing cavity, and the first bearing and the second bearing are sleeved on the outer side of the main shaft, so that the central axes of the first bearing, the second bearing and the main shaft coincide.

[0005] Preferably, the iron core support is of hollow structure, one end of the iron core support close to the second bearing is provided with a containing cavity, and the second bearing is contained in the containing cavity so that the outer wall of the second bearing tightly abuts against the inner wall of the containing cavity.

[0006] Preferably, the middle part of the shell is provided with a fixing sleeve, the fixing sleeve is communicated with the containing cavity, and the iron core support is contained in the fixing sleeve so that the outer wall of the iron core support tightly abuts against the inner wall of the fixing sleeve.

[0007] Preferably, a connecting rib is provided at the connection between the receiving cavity and the fixed sleeve. The number of the connecting ribs is three, and the three connecting ribs are arranged in a triangle and arranged around the circumference of the receiving cavity.

[0008] Preferably, the spindle is provided with a limit block, which stops and abuts against the second bearing and the magnet.

[0009] The beneficial effects of this utility model are: it enables the first bearing to be inserted and installed from bottom to top, and the second bearing to be inserted and installed from top to bottom, which facilitates quick installation and improves assembly efficiency. Attached Figure Description

[0010] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0011] Fig. 2 This is a schematic diagram of the internal structure of this utility model.

[0012] Fig. 3 This is an exploded structural diagram of the present invention.

[0013] Fig. 4 This is a schematic diagram of the shell structure of this utility model.

[0014] The reference numerals in the figures include:

[0015] 1—Shell shell; 11—Accommodating cavity; 12—Fixing sleeve

[0016] 13 - Connecting stiffeners

[0017] 2—Iron core support; 21—Receiving cavity

[0018] 3 – Stator winding; 4 – First bearing; 5 – Main shaft

[0019] 6 - Second bearing; 7 - Magnet; 8 - Limiting block. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figs. 1 to 4As shown, the bearing mounting structure of a ducted motor according to this utility model includes a housing 1, an iron core support disposed on the housing 1, a stator winding 3 disposed on the iron core support, a first bearing 4 disposed on the housing 1, a main shaft 5 passing through the iron core support and protruding outside the housing 1, and a second bearing 6 and a magnet 7 disposed on the main shaft 5. The magnet 7 is sleeved on the outside of the main shaft 5, and the second bearing 6 is housed in the iron core support. The housing 1 is provided with a receiving cavity 11, and the first bearing 4 is housed in the receiving cavity 11. The first bearing 4 and the second bearing 6 are sleeved on the outside of the main shaft 5 so that the central axes of the first bearing 4, the second bearing 6, and the main shaft 5 coincide.

[0022] The stator winding 3 is installed inside the core support, which is fitted onto the outside of the first bearing 4 to fix the outer ring position of the first bearing 4. The inner rings of both the first bearing 4 and the second bearing 6 are fitted onto the outside of the main shaft 5, ensuring that the first bearing 4 and the second bearing 6 are spaced apart and relatively opposite each other. This reduces friction and wear, facilitates smoother and more stable rotation of the main shaft 5, reduces energy consumption, and extends service life. When the first bearing 4 is inserted into the main shaft 5 from bottom to top, and the second bearing 6 is inserted into the main shaft 5 from top to bottom, the central axes of the first bearing 4, the second bearing 6, and the main shaft 5 coincide, ensuring the accuracy and coaxiality of each component. This achieves accurate alignment between the first bearing 4, the second bearing 6, and the main shaft 5. The top-to-bottom alignment insertion method provides high alignment accuracy and rapid installation. This invention enables the insertion of the first bearing 4 from bottom to top and the second bearing 6 from top to bottom, facilitating rapid installation and improving assembly efficiency.

[0023] In this embodiment, the core support has an internal hollow structure. A receiving cavity 21 is provided at one end of the core support near the second bearing 6. The second bearing 6 is housed within the receiving cavity 21, ensuring that the outer wall of the second bearing 6 is in close contact with the inner wall of the receiving cavity 21. Specifically, the second bearing 6 is housed within the receiving cavity 21, ensuring that its outer wall is in close contact with the inner wall of the receiving cavity 21, thereby effectively assembling and positioning the second bearing 6, resulting in good positioning performance.

[0024] In this embodiment, a fixing sleeve 12 is provided in the middle of the housing 1. The fixing sleeve 12 communicates with the receiving cavity 11, and the iron core support is housed within the fixing sleeve 12 so that the outer wall of the iron core support is in close contact with the inner wall of the fixing sleeve 12. Specifically, the iron core support is housed within the fixing sleeve 12, so that the outer wall of the iron core support is in close contact with the inner wall of the fixing sleeve 12, thereby assembling and positioning the iron core support with good positioning effect.

[0025] In this embodiment, a connecting rib 13 is provided at the connection between the receiving cavity 11 and the fixing sleeve 12. Three connecting ribs 13 are arranged in a triangle around the circumference of the receiving cavity 11. Specifically, the triangular arrangement of the three connecting ribs 13 around the circumference of the receiving cavity 11 ensures the stability of the connection between the three connecting ribs 13 and the receiving cavity 11, resulting in high structural strength.

[0026] In this embodiment, the main shaft 5 is equipped with a limiting block 8, which abuts against the second bearing 6 and the magnet 7. Specifically, the fan blade is connected to the main shaft 5, and the limiting block 8 abuts against the second bearing 6 and the magnet 7, thereby achieving a stable limiting effect on the second bearing 6 and the magnet 7 respectively, providing high safety protection.

[0027] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A bearing mounting structure for a ducted motor, characterized in that: The device includes a housing, a core support mounted on the housing, a stator winding mounted on the core support, a first bearing mounted on the housing, a main shaft passing through the core support and protruding outside the housing, and a second bearing and a magnet mounted on the main shaft. The magnet is sleeved on the outside of the main shaft, and the second bearing is housed inside the core support. The housing has a receiving cavity, and the first bearing is housed inside the receiving cavity. The first bearing and the second bearing are sleeved on the outside of the main shaft so that the central axes of the first bearing, the second bearing, and the main shaft coincide.

2. The bearing mounting structure of a ducted motor according to claim 1, characterized in that: The iron core support has an internal hollow structure. A receiving cavity is provided at one end of the iron core support near the second bearing. The second bearing is housed in the receiving cavity so that the outer wall of the second bearing is in close contact with the inner wall of the receiving cavity.

3. The bearing mounting structure of a ducted motor according to claim 1, characterized in that: A fixed sleeve is provided in the middle of the housing, and the fixed sleeve is connected to the accommodating cavity. The iron core support is housed in the fixed sleeve so that the outer wall of the iron core support is in close contact with the inner wall of the fixed sleeve.

4. The bearing mounting structure of a ducted motor according to claim 3, characterized in that: The connection between the accommodating cavity and the fixed sleeve is provided with connecting ribs. There are three connecting ribs, which are arranged in a triangle and surround the circumference of the accommodating cavity.

5. The bearing mounting structure of a ducted motor according to claim 1, characterized in that: The main shaft is provided with a limit block, which stops and abuts against the second bearing and the magnet.

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