A bottom-mounted transmission type motor heat dissipation structure

Abstract

The application discloses a lower transmission type motor heat dissipation structure, which comprises a supporting base, a motor outer shell, a driving shaft, a lower heat dissipation mechanism and a transmission assembly. The heat dissipation structure located at the rear end of the motor outer shell is removed, and the heat dissipation structure and an airflow path are installed at the bottom of the motor outer shell, so that the rainwater above cannot enter the inside of the motor outer shell through the airflow path. The rotation of the lower air guide blade makes the airflow enter the air inlet pipe from the lower filter box, the airflow in the air inlet pipe is uniformly discharged from the annular air outlet disc, the inside of the motor outer shell is cooled, and finally the airflow is discharged from the bottom air outlet pipe, so that the complete airflow path design is realized.

Description

Technical Field

[0001] This invention relates to a heat dissipation structure for a bottom-drive electric motor. Background Technology

[0002] An electric motor consists of a rotor and a stator. The rotor is mounted on a shaft, and the stator surrounds the rotor, hence the name "inner rotor, outer stator motor," which has a high rotational speed. An electric motor is a device that converts electrical energy into mechanical energy. It utilizes energized coils, i.e., stator windings, to generate a rotating magnetic field that acts on the rotor, forming a magnetoelectric torque. To dissipate heat, existing electric motors typically have cooling fins installed at the rear end of the rotating shaft within the motor housing. These fins are located inside the rear end cover of the motor housing, which has ventilation grilles. An exhaust vent is located at the front end of the motor housing. However, for applications requiring rain protection, the above-described structure is generally insufficient, necessitating a redesign of the motor's mechanism. Summary of the Invention

[0003] To address the shortcomings of the existing technology, the present invention provides a heat dissipation structure for a bottom-mounted drive motor with rainproof function.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A bottom-mounted drive type electric motor cooling structure includes a support base, an electric motor housing, a drive shaft, a bottom-mounted cooling mechanism, and a transmission assembly. A support base is installed on each of the two bottom sides of the electric motor housing. The drive shaft is installed in the middle of the interior of the electric motor housing. The bottom-mounted cooling mechanism includes a lower rotating shaft, lower-mounted air intake blades, a lower-mounted filter box, a bottom exhaust pipe, an air inlet pipe, and an annular exhaust disc. The lower-mounted filter box is installed on the outer side of the bottom of the electric motor housing. The lower rotating shaft is installed on the upper side of the interior of the lower-mounted filter box, and multiple lower-mounted air intake blades are evenly installed around the lower end of the lower rotating shaft. A duct is inserted through the bottom side of the motor housing. The lower end of the duct extends to the upper part of the lower filter box, and the upper end extends to the lower part of the motor housing. An annular exhaust fan is installed at the upper end of the duct. The annular exhaust fan is located inside the motor housing, and multiple short ventilation pipes are evenly arranged around one side of the annular exhaust fan. A bottom exhaust fan is fixedly inserted through the lower part of the other side of the motor housing, front and back. The upper end of the lower rotating shaft is connected to the drive shaft through a transmission assembly. When the drive shaft rotates, it drives the lower rotating shaft to rotate.

[0006] Furthermore, the upper part of the inner surface of the motor housing is provided with multiple positioning plates; the upper part of the annular exhaust fan is provided with multiple abutment plates, and the lower part of the annular exhaust fan is provided with a guide pipe; the upper part of the air inlet pipe is provided with a telescopic sleeve; the abutment plates and positioning plates are fixedly connected by bolts; the upper part of the telescopic sleeve is sleeved around the lower part of the guide pipe.

[0007] Furthermore, the transmission assembly includes a meshing wheel, a rotating rod, an extension rod, a drive gear, a connecting belt, and a driven gear; a transmission cavity is provided inside the lower side wall of the motor housing; the upper end of the lower rotating shaft extends to one side of the transmission cavity, and the driven gear is installed at the upper end of the lower rotating shaft; a drive gear is rotatably engaged on the other side of the transmission cavity, and a connecting belt is installed between the drive gear and the driven gear; an extension rod is installed at the upper end of the drive gear; the upper end of the extension rod extends to the middle side of the motor housing; a rotating rod is installed at the upper end of the extension rod; a meshing wheel is sleeved around the outer periphery of one end of the drive shaft; the side of the rotating rod is meshed with the meshing wheel.

[0008] Furthermore, the meshing wheel and the rotating rod are meshing connection structures of a worm gear and a worm.

[0009] Furthermore, the bottom of both sides of the transmission cavity is provided with rotating locking grooves; the lower ends of the drive gear and the driven gear are provided with rotating locking rods; the rotating locking rods are respectively rotatably locked onto the rotating locking grooves.

[0010] Furthermore, the bottom of the lower filter box has multiple ventilation openings, a filter screen is provided inside the lower part of the lower filter box, and a partition ring is provided around the lower end of the lower filter box.

[0011] Furthermore, an end cover is installed at each of the front and rear ends of the motor housing; a positioning bearing is provided at each of the front and rear ends of the drive shaft; the positioning bearings are respectively fixedly connected to the inner side of the end cover by bolts.

[0012] Furthermore, the support base has an L-shaped structure.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This invention removes the traditional heat dissipation structure located at the rear end of the motor housing and installs the heat dissipation structure and airflow path at the bottom of the motor housing. This prevents rainwater from entering the motor housing through the airflow path. The rotation of the lower exhaust vanes causes airflow to enter the air inlet pipe from the lower filter box. The airflow in the air inlet pipe is evenly discharged from the annular exhaust fan, which dissipates heat from the inside of the motor housing. Finally, the airflow is discharged from the bottom exhaust pipe, achieving a complete airflow path design.

[0015] 2. The design challenge of this invention lies in how to drive the lower rotating shaft to rotate via the drive shaft. Traditional structures typically involve directly mounting multiple heat dissipation blades around the rear end of the drive shaft. However, this invention requires the heat dissipation structure to be installed at the bottom of the motor housing. To address this, a transmission assembly is added. This assembly transmits the power from the drive shaft downwards sequentially. The rotation of the drive shaft drives the meshing wheel to rotate, which in turn drives the rotating rod to rotate. This, in turn, drives the lower drive gear to rotate via the extension rod. The drive gear, through a connecting belt, drives the driven gear to rotate, thus causing the lower rotating shaft and the lower exhaust blades to rotate. This achieves synchronous rotation of the drive shaft and the lower exhaust blades, demonstrating a clever structural design. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the lower heat dissipation mechanism and transmission assembly of the present invention.

[0018] Figure 3 This is an enlarged structural schematic diagram of the lower heat dissipation mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the front end of the present invention.

[0020] Figure 5 This is a schematic diagram of the back-end structure of the present invention.

[0021] Figure 6 This is a side view of the annular exhaust fan of the present invention.

[0022] Figure 7 This is a schematic cross-sectional view of the motor housing of the present invention. Detailed Implementation

[0023] The invention will now be described in further detail with reference to the accompanying drawings.

[0024] like Figures 1 to 7As shown, a bottom-drive type electric motor cooling structure includes a support base 3, an electric motor housing 1, a drive shaft 2, a bottom-drive cooling mechanism 4, and a transmission assembly 5. A support base 3 is installed on each of the two bottom sides of the electric motor housing 1. The drive shaft 2 is installed in the middle of the interior of the electric motor housing 1. The bottom-drive cooling mechanism 4 includes a lower rotating shaft 43, lower air-guiding blades 42, a lower filter box 41, a bottom exhaust pipe 46, an air inlet pipe 44, and an annular exhaust disc 45. The lower filter box 41 is installed on one side of the bottom exterior of the electric motor housing 1. The lower rotating shaft 43 is installed on the upper interior side of the lower filter box 41, and multiple lower air-guiding blades are evenly installed around the lower end of the lower rotating shaft 43. 42; An air inlet pipe 44 is connected to one side of the bottom of the motor housing 1. The lower end of the air inlet pipe 44 extends to the upper part of the lower filter box 41, and the upper end of the air inlet pipe 44 extends to the lower part of the motor housing 1. An annular exhaust fan 45 is installed at the upper end of the air inlet pipe 44. The annular exhaust fan 45 is located on one side of the motor housing 1. Multiple ventilation short pipes 451 are evenly arranged around one side of the annular exhaust fan 45. A bottom exhaust pipe 46 is fixedly connected to the lower part of the other side of the motor housing 1. The upper end of the lower rotating shaft 43 is connected to the drive shaft 2 through a transmission assembly 5. When the drive shaft 2 rotates, it drives the lower rotating shaft 43 to rotate.

[0025] like Figures 1 to 7 As shown, in order to achieve the movable connection of the annular exhaust fan 45, the upper part of the inner part of the motor housing 1 is provided with multiple positioning plates 81; the upper part of the annular exhaust fan 45 is provided with multiple abutment plates 82, and the lower part of the annular exhaust fan 45 is provided with a guide pipe 83; the upper part of the air inlet pipe 44 is provided with a telescopic sleeve pipe 84; the abutment plates 82 and the positioning plates 81 are fixedly connected by bolts 85; the upper part of the telescopic sleeve pipe 84 is sleeved around the lower part of the guide pipe 83.

[0026] like Figures 1 to 7As shown, to facilitate synchronous driving of the lower rotating shaft 43 via the drive shaft 2, the transmission assembly 5 preferably includes a meshing wheel 51, a rotating rod 52, an extension rod 53, a drive gear 54, a connecting belt 55, and a driven gear 56. A transmission cavity 11 is provided inside the lower side wall of the motor housing 1. The upper end of the lower rotating shaft 43 extends to one side of the transmission cavity 11, and the driven gear 56 is installed at the upper end of the lower rotating shaft 43. A drive gear 54 is rotatably engaged on the other side of the transmission cavity 11, and a connecting belt 55 is installed between the drive gear 54 and the driven gear 56. An extension rod 53 is installed at the upper end of the drive gear 54. The upper end of the extension rod 53 extends to the middle side of the motor housing 1. A rotating rod 52 is installed at the upper end of the extension rod 53. The meshing wheel 51 is sleeved around the outer periphery of one end of the drive shaft 2. The side of the rotating rod 52 is meshed with the meshing wheel 51. Furthermore, the meshing wheel 51 and the rotating rod 52 are meshing connection structures of a worm gear and a worm. Furthermore, the bottom of both sides of the transmission cavity 11 are respectively provided with rotating locking grooves 12; the lower ends of the driving gear 54 and the driven gear 56 are respectively provided with rotating locking rods 9; the rotating locking rods 9 are respectively rotatably locked onto the rotating locking grooves 12.

[0027] like Figures 1 to 7 As shown, for filtration, the bottom of the lower filter box 41 has multiple ventilation openings 411, a filter screen 413 is provided inside the lower part of the lower filter box 41, and a partition ring 412 is provided around the lower end of the lower filter box 41 for further waterproofing. Furthermore, an end cover 5 is installed at both the front and rear ends of the motor housing 1; a positioning bearing 6 is provided at both the front and rear ends of the drive shaft 2; the positioning bearings 6 are fixedly connected to the inner surface of the end cover 5 by bolts 7. Furthermore, the support base 3 has an L-shaped structure.

[0028] This invention removes the traditional heat dissipation structure located at the rear end of the motor housing 1 and installs the heat dissipation structure and airflow path at the bottom of the motor housing 1. This prevents rainwater from entering the motor housing 1 through the airflow path. The rotation of the lower air intake blades 42 causes airflow to enter the air inlet pipe 44 from the lower filter box 41. The airflow in the air inlet pipe 44 is evenly discharged from the annular exhaust fan 45, which dissipates heat from the inside of the motor housing 1. Finally, the airflow is discharged from the bottom exhaust pipe 46, achieving a complete airflow path design.

[0029] The design challenge of this invention lies in how to drive the lower rotating shaft 43 to rotate via the drive shaft 2. Traditional structures typically involve directly mounting multiple heat dissipation blades around the rear end of the drive shaft 2. However, this invention requires the heat dissipation structure to be installed at the bottom of the motor housing 1. To address this, a transmission assembly 5 is added. This assembly transmits the power from the drive shaft 2 downwards sequentially. The rotation of the drive shaft 2 drives the meshing wheel 51 to rotate, which in turn drives the rotating rod 52 to rotate. This, in turn, drives the lower drive gear 54 to rotate via the extension rod 53. The drive gear 54 drives the driven gear 56 to rotate via the connecting belt 55. This, in turn, drives the lower rotating shaft 43 and the lower air-guiding blade 42 to rotate, thus achieving synchronous rotation of the drive shaft 2 and the lower air-guiding blade 42. The structural design is ingenious.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat dissipation structure for a bottom-drive type electric motor, characterized in that, The utility model provides a kind of motor shell, including support base, motor shell, drive shaft, lower heat dissipation mechanism, transmission assembly;The bottom of the motor shell is respectively equipped with one support base on both sides;The inside middle of the motor shell is equipped with drive shaft;The lower heat dissipation mechanism includes lower end pivot, lower air guide blade, lower filter box, bottom exhaust pipe, air inlet pipe, annular exhaust disc;The bottom outside of the motor shell is equipped with lower filter box on one side;The inside upper side of the lower filter box is equipped with lower end pivot, and the lower end of lower end pivot is evenly equipped with multiple lower air guide blades around;The bottom of the motor shell is connected with one air inlet pipe on one side, and the lower end of air inlet pipe extends to the inside upper side of lower filter box, and the upper end of air inlet pipe extends to the inside lower side of the motor shell on one side;The upper end of air inlet pipe is equipped with annular exhaust disc, and annular exhaust disc is located in the inside one side of the motor shell, and the periphery of one side of annular exhaust disc is evenly provided with multiple ventilation short pipes;The inside other side of the motor shell is respectively fixedly connected with one bottom exhaust pipe before and after;The upper end of lower end pivot is connected with drive shaft by transmission assembly, and drive shaft rotates to drive lower end pivot to rotate;Transmission assembly includes engagement wheel, rotating rod, extension rod, drive gear, connecting belt and driven gear;The inside of the lower side wall of the motor shell is equipped with transmission cavity;The upper end of lower end pivot extends to the inside one side of transmission cavity, and the upper end of lower end pivot is equipped with driven gear;Transmission cavity is rotatably connected with drive gear on the other side of the inside, and connecting belt is arranged between drive gear and driven gear;The upper end of drive gear is equipped with extension rod;The upper end of extension rod extends to the inside middle one side of the motor shell;The upper end of extension rod is equipped with rotating rod;The periphery of one end of drive shaft is rotatably connected with engagement wheel;Rotating rod is rotatably connected with engagement wheel.

2. The underdrive type motor heat dissipation structure according to claim 1, characterized by The upper end of the motor shell is equipped with multiple positioning plates;The upper end of annular exhaust disc is equipped with multiple abutment plates, and the lower end of annular exhaust disc is equipped with through pipe;The upper end of air inlet pipe is equipped with telescopic sleeve pipe;The abutment plate and the positioning plate are fixedly connected by bolt;The upper end of telescopic sleeve pipe is sleeved on the periphery of the lower end of through pipe.

3. The bottom drive type motor heat dissipation structure according to claim 1, characterized by The engagement wheel and the rotating rod are the engagement connection structure of worm wheel and worm.

4. The submerged drive electric motor heat sink structure of claim 1, wherein, The bottom of the transmission cavity is respectively equipped with rotating clamping groove on both sides;The lower end of drive gear and driven gear is respectively equipped with rotating clamping rod;The rotating clamping rod is respectively rotatably clamped on the rotating clamping groove.

5. The submerged drive electric motor heat sink structure of claim 1, wherein, The bottom of the lower filter box is equipped with multiple ventilation openings, the inside lower side of the lower filter box is equipped with filter screen, and the lower end of the lower filter box is equipped with partition convex ring around.

6. The submerged drive electric motor heat sink structure of claim 1, wherein, The front and rear ends of the motor shell are respectively equipped with one end cover;The front and rear ends of the drive shaft are respectively equipped with one positioning bearing;The positioning bearing is fixedly connected on the inner side of the end cover by bolt.

7. The submerged drive electric motor heat sink structure of claim 1, wherein, The support base is L-shaped structure.

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