Heat dissipation motor

Abstract

The utility model discloses a heat radiation motor which comprises a motor main body, a main shaft is arranged in the motor main body, a winding structure for driving the main shaft to rotate is arranged in the motor main body, a rotor is arranged in the middle of the main shaft, and a bearing is arranged at the joint of the main shaft and a shell of the motor main body. The rear end of the motor body is provided with a rear end cover, the tail end of the rear end cover is provided with an air hole, the front end of the main shaft is provided with a transmission wheel, the rear end of the main shaft is provided with a cooling fan, the middle part of the cooling fan is provided with a fan seat, and the fan seat is in one-way clutch connection with the main shaft. The blades of the heat dissipation fan are metal blades, and are connected through the bearing structure in the using process, so that the blades can be conveniently driven to rotate, meanwhile, the blades can continuously rotate after the main shaft stops rotating, and the heat dissipation effect is improved in the using process.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically a heat dissipation motor. Background Technology

[0002] Electric motors generate heat during operation, and if this heat is not dissipated in time, it will affect the motor's performance and lifespan. Therefore, manufacturers install a fan at the back of the motor to enhance heat dissipation. The fan blows away the hot air from the motor's radiator, allowing fresh, cool air to enter, thus dissipating the heat. This helps the motor maintain its normal operating temperature.

[0003] The prior art (CN202211336601.0) relates to the field of motor technology, and more particularly to a motor with an automatically matched airflow for cooling fans. The motor includes a motor body with a main shaft and a fan shroud; a first blade fixedly connected to the main shaft and driven by the main shaft; and a second blade coaxially and independently rotatably connected to the first blade; the second blade is independently driven by an external power source. This invention's motor with automatically matched airflow can match the airflow to the motor body to meet cooling requirements based on the operating state of the motor main shaft; simultaneously, it can also match the airflow to the motor body to meet cooling requirements based on the motor's operating environment, thus providing excellent heat dissipation for the motor.

[0004] Regarding the aforementioned technologies, the inventors discovered that existing built-in motors can only rotate when the motor is driven and cannot continue to work after the motor drive is turned off. External fans require a separate power supply to operate, resulting in high design costs. Utility Model Content

[0005] To address the aforementioned problems, this application provides a heat dissipation motor, employing the following technical solution:

[0006] A cooling motor includes a motor body, a main shaft inside the motor body, and a winding structure for driving the main shaft to rotate inside the motor body. A rotor is located in the middle of the main shaft, and a bearing is located at the connection between the main shaft and the outer shell of the motor body. A rear end cover is located at the rear end of the motor body, and a vent hole is located at the end of the rear end cover. A transmission wheel is located at the front end of the main shaft, and a cooling fan is located at the rear end of the main shaft. A fan seat is located in the middle of the cooling fan, and a hub sleeve is located inside the fan seat. A bearing is located at the connection between the hub sleeve and the main shaft, and two sets of bearings are arranged side by side. A one-way clutch mechanism is located at the connection between the hub sleeve and one of the bearings.

[0007] Preferably, the one-way clutch mechanism is a ratchet mechanism.

[0008] Preferably, the ratchet mechanism includes six pawls distributed at 120° and trapezoidal ratchet teeth, with a locking torque ≥15 N·m.

[0009] Preferably, the cooling fan has a fan housing on its outer side, and fan blades are arranged in an array on the fan housing.

[0010] Preferably, the fan base has a mounting hole in the middle, and an end cap and a threaded sleeve are provided at the rear end of the mounting hole.

[0011] Preferably, the bearing is a cassette bearing.

[0012] Preferably, the fan blades are made of one-piece aluminum.

[0013] Preferably, heat dissipation fins are provided on the outer side of the motor body, and the heat dissipation fins are arranged in a pattern on the outer side of the motor body.

[0014] Preferably, the outer side of the motor body is provided with heat dissipation fins, and the heat dissipation fins are spirally arranged around the outer side of the motor body. The inner wall of the outer shell of the motor body is provided with a spiral guide groove, and the heat dissipation fins and the spiral guide groove of the inner wall of the outer shell of the motor body form a ventilation channel.

[0015] Preferably, the heat dissipation fins are corrugated aluminum sheets with a spacing of 3-5 mm between adjacent fins.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this invention, the blades of the cooling fan are made of metal, and a bearing structure is used to connect them during use. This allows the fan blades to rotate easily and continue to rotate even after the main shaft stops, thereby improving the heat dissipation effect. Furthermore, the metal blades are made of aluminum, which reduces the weight of the blades and allows for better thermal conductivity and dynamic balance, thus reducing vibration and noise during high-speed rotation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a heat dissipation motor according to the present invention;

[0020] Figure 2This is a front view of a heat dissipation motor as shown in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal spindle structure of a heat dissipation motor as shown in this utility model;

[0022] Figure 4 This is a schematic diagram of the cooling fan structure of a heat dissipation motor according to the present invention;

[0023] Figure 5 This is a front view of the cooling fan of a cooling motor according to this utility model;

[0024] Figure 6 This is a schematic diagram of the installation of a cooling fan in a heat dissipation motor, as shown in this utility model.

[0025] In the diagram: 1. Motor body; 2. Heat dissipation fins; 3. Rear end cover; 4. Drive wheel; 5. Main shaft; 6. Cooling fan; 61. Fan base; 62. Mounting hole; 63. Fan blades; 64. Fan housing; 65. Hub sleeve; 66. Limiting bushing; 7. Rotor; 8. Bearing. Detailed Implementation

[0026] 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. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0027] For specific examples, please refer to the following: Figure 1 , Figure 2 and Figure 3 As shown, a heat dissipation motor includes a motor body 1, a main shaft 5 is provided inside the motor body 1, and a winding structure for driving the main shaft 5 to rotate is provided inside the motor body 1. Heat dissipation fins 2 are provided on the outer side of the motor body 1, and the heat dissipation fins 2 are arranged in an array on the outer side of the motor body 1. A rotor 7 is provided in the middle of the main shaft 5, and a bearing 8 is provided at the connection between the main shaft 5 and the outer shell of the motor body 1. A rear end cover 3 is provided at the rear end of the motor body 1, and a vent hole is provided at the end of the rear end cover 3. A transmission wheel 4 is provided at the front end of the main shaft 5, and a cooling fan 6 is provided at the rear end of the main shaft 5.

[0028] The heat dissipation fins 2 extend axially along the motor housing and are arranged circumferentially. In other embodiments, they can also be arranged circumferentially and axially. In a preferred embodiment, the heat dissipation fins 2 are corrugated aluminum sheets with a spacing of 3-5 mm between adjacent fins and a thickness of 0.8-1.2 mm.

[0029] In other preferred embodiments, the outer side of the motor body 1 is provided with heat dissipation fins (not shown in the figure of this embodiment), and the heat dissipation fins are spirally arranged around the outer side of the motor body 1. The inner wall of the outer shell of the motor body 1 is provided with a spiral guide groove. The heat dissipation fins and the spiral guide groove of the inner wall of the outer shell of the motor body 1 form a ventilation channel. Specifically, the connection method can be that the outer shell of the motor body 1 is provided with a through hole at the position of the spiral guide groove. The external opening of the through hole is located between adjacent rings of heat dissipation fins. Furthermore, the direction of the through hole is consistent with the direction of the spiral guide groove, thereby improving the heat dissipation effect of the motor body 1.

[0030] Figure 4 , Figure 5 and Figure 6 As shown, a fan base 61 is provided in the middle of the cooling fan 6, and a hub sleeve 65 is provided inside the fan base 61. A bearing 8 is provided at the connection between the hub sleeve 65 and the spindle 5, and two sets of bearings 8 are arranged side by side. The bearings 8 are set as cassette bearings, and a one-way clutch mechanism is provided at the connection between the hub sleeve 65 and one of the bearings 8.

[0031] A hub sleeve is a ring-shaped structure that is fitted over key components of a motor (such as the rotor, bearings, or steel rings). Its main purpose is to improve the motor's heat dissipation efficiency by increasing the heat dissipation area, optimizing airflow circulation, or isolating the heat transfer path.

[0032] A one-way clutch mechanism is a mechanical component that allows power to be transmitted in only one direction; it can be a roller-type one-way clutch, a wedge-type one-way clutch, or a ratchet mechanism, etc. In this embodiment, the one-way clutch mechanism is a ratchet mechanism 66. The ratchet structure can lock the bearing 8, thereby adjusting whether the hub sleeve 65 rotates with the main shaft 5 or remains stable.

[0033] In a preferred embodiment, the ratchet mechanism 66 includes six pawls distributed at 120° and trapezoidal ratchet teeth, with a locking torque ≥15 N·m; the ratchet body of the ratchet mechanism 66 is made of HT250 cast iron, and the pawl head is inlaid with a WC-12Co hard alloy wear-resistant layer with a thickness of 0.3 mm.

[0034] The cooling fan 6 has a fan housing 64 on its outer side, and fan blades 63 are arranged in an array on the fan housing 64. The cooling fan 6 and the spindle 5 are combined through a hub structure and a bearing structure. During use, the fan blades can rotate synchronously with the spindle and continue to rotate under inertia to dissipate heat after the spindle stops rotating. In addition, the fan blades can be driven to rotate independently by a drive device during use. The fan base 61 has a mounting hole 62 in the middle, and an end cap and a threaded sleeve are provided at the rear end of the mounting hole 62.

[0035] Furthermore, it also includes a guide plate that directs the airflow of the cooling fan 6 to the vent holes of the rear end cover 3 of the motor body 1. During the inertial cooling phase of the cooling fan 6, the residual kinetic energy drives the blades 63 to decay for more than 30 seconds, forming a secondary circulation channel in conjunction with the guide plate.

[0036] The fan blades 63 are made of one piece of aluminum, which makes production convenient. In addition, the aluminum structure is lightweight and has good dynamic balance, reducing vibration and noise during high-speed rotation.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat dissipation motor, comprising a motor body (1), wherein a main shaft (5) is disposed inside the motor body (1), and a winding structure for driving the main shaft (5) to rotate is disposed inside the motor body (1), a rotor (7) is disposed in the middle of the main shaft (5), and a bearing (8) is disposed at the connection between the main shaft (5) and the outer shell of the motor body (1), and a rear end cover (3) is disposed at the rear end of the motor body (1), and a vent hole is disposed at the end of the rear end cover (3), characterized in that: The front end of the main shaft (5) is provided with a transmission wheel (4), and the rear end of the main shaft (5) is provided with a cooling fan (6). The middle part of the cooling fan (6) is provided with a fan seat (61), and a hub sleeve (65) is provided inside the fan seat (61). A bearing (8) is provided at the connection between the hub sleeve (65) and the main shaft (5), and two sets of bearings (8) are arranged side by side. A one-way clutch mechanism is provided at the connection between the hub sleeve (65) and one of the bearings (8).

2. A heat dissipation motor according to claim 1, characterized in that, The one-way clutch mechanism is a ratchet mechanism (66).

3. A heat dissipation motor according to claim 2, characterized in that, The ratchet mechanism (66) includes six pawls distributed at 120° and trapezoidal ratchet teeth, with a locking torque ≥15N·m.

4. A heat dissipation motor according to claim 1, characterized in that, The cooling fan (6) has a fan housing (64) on its outer side, and fan blades (63) are arranged in an array on the fan housing (64).

5. A heat dissipation motor according to claim 3, characterized in that, The fan base (61) has a mounting hole (62) in the middle, and an end cap and a threaded sleeve are provided at the rear end of the mounting hole (62).

6. A heat dissipation motor according to claim 1, characterized in that, The bearing (8) is a cassette bearing.

7. A heat dissipation motor according to claim 1, characterized in that, The motor body (1) is provided with heat dissipation fins (2) on the outside, and the heat dissipation fins (2) are arranged in a pattern on the outside of the motor body (1).

8. A heat dissipation motor according to claim 7, characterized in that, The inner wall of the motor body (1) is provided with a spiral guide groove, and the heat dissipation fins (2) and the spiral guide groove on the inner wall of the motor body (1) form a ventilation channel.

9. A heat dissipation motor according to claim 8, characterized in that, The heat dissipation fins (2) are wavy aluminum sheets with a spacing of 3-5 mm between adjacent fins.

10. A heat dissipation motor according to claim 4, characterized in that, The fan blades (63) are made of aluminum in one piece.

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