Brushless outward-rotating self-suction type heat dissipation device

Abstract

The utility model discloses a brushless external rotation self-suction type heat dissipation device, which comprises a motor body and a heat dissipation mechanism, the motor body is also provided with an end cover used for connecting the heat dissipation mechanism, the end cover is provided with a hollow structure, the motor body is an external rotation type motor, and the heat dissipation mechanism is provided with a heat dissipation mechanism. After the motor body rotates in a self-rotation mode, airflow passes through the hollow structure on the end cover and is led into the motor body by the heat dissipation mechanism. After the heat dissipation device is installed on the motor, air flow is generated after rotation of the brushless motor, air enters the heat dissipation device through the position of the end cover, the heat dissipation mechanism is provided with a plurality of wedge-shaped structures, and the air can be sucked into the motor in the rotation process, so that air cooling of the motor can be carried out without other driving force at present, and the service life of the motor is prolonged. And meanwhile, the structure can improve the air suction amount so as to provide heat dissipation for the motor, and has the advantages of higher heat dissipation efficiency, lighter and more reliable overall structure and low maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of motor heat dissipation, in particular to a brushless outward-rotating self-priming heat dissipation device. Background Art

[0002] Brushless outrunner motors have a wide range of applications, among which brushless outrunner motors for treadmills are more widely used. However, as the heat generated by the brushless outrunner motor accumulates, the temperature of the motor itself will increase, the output torque and motor speed will decrease, and the working efficiency of the motor will be affected.

[0003] In the relevant technology, there is a fan with heat dissipation fan blades, including a supporting shell. The supporting shell is a barrel-shaped structure, and a rotating shaft is connected to the middle of the left side of the inner part of the supporting shell through a bearing, one end of the rotating shaft penetrates and extends to the outside of the supporting shell, and the left side of the supporting shell is connected to a motor through a connecting foot column, and the output shaft of the motor is connected to one end of the rotating shaft through a coupling. Heat dissipation holes are evenly arranged in the middle of the left side of the supporting shell, and the rotating shaft is located on the left side of the inner part of the supporting shell. The rotating shaft is provided with heat dissipation fan blades, and the rotating shaft is located on the right end of the inner part of the supporting shell. The heat dissipation fan blades are driven to rotate by the rotating shaft, so as to dissipate heat from the motor.

[0004] In the process of implementing the embodiments of the present disclosure, it was found that at least the following problems exist in the related technology: it is necessary to install independently installed fan blades to dissipate heat for the motor, which increases the cost during the manufacturing process, and the heat dissipation fan blades are directly exposed to the outside and are easily disturbed by external airflow, resulting in poor air flow gathering effect of the heat dissipation fan blades and poor heat dissipation effect of the motor, and the air inlet side of the blowing fan blades is arranged relative to the air inlet side of the heat dissipation fan blades, which will reduce the air intake volume of the heat dissipation fan blades and further reduce the heat dissipation effect of the motor. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art solutions, the utility model provides a brushless outward-rotating self-priming heat dissipation device, which can effectively solve the problems raised by the background technology.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A brushless outward-rotating self-priming heat dissipation device comprises a motor body and a heat dissipation mechanism, wherein the motor body is further provided with an end cover for connecting the heat dissipation mechanism, and the end cover has a hollow structure, wherein the motor body is an outward-rotating motor, and after the motor body rotates in a self-rotating manner, the airflow passes through the hollow structure on the end cover and is introduced into the motor body by the heat dissipation mechanism;

[0008] The heat dissipation mechanism includes a heat dissipation disk, the edge of the heat dissipation disk is formed with a convex edge, the convex edge is provided with a wedge-shaped structure for heat dissipation, the wedge-shaped structure includes multiple first heat dissipation areas and second heat dissipation areas, and the middle of the heat dissipation disk is also provided with a mounting portion, the mounting portion is provided with a movable part for connecting to the motor body, and the mounting portion is coaxially arranged with the heat dissipation disk.

[0009] As a further description of the above technical solution, the hollow structure of the end cover is a plurality of oblong through holes, the through holes are arranged in an array with equal spacing along the center of the end cover, and the end cover is fixedly connected to the heat dissipation disc.

[0010] As a further description of the above technical solution, a driving shaft for connecting to the track is further provided on one side of the heat dissipation disc, and the driving shaft is integrally formed with the heat dissipation disc, and the driving shaft is passed through the heat dissipation disc through a movable part.

[0011] As a further description of the above technical solution, the diameter of the heat dissipation disc is 95 mm, the heat dissipation disc and the flange are integrally formed, and the flange is arranged around the heat dissipation disc, wherein the thickness of the heat dissipation disc is 5 mm.

[0012] As a further description of the above technical solution, the first heat dissipation area includes a heat dissipation module with a fan-shaped protrusion, the heat dissipation module has two closed slots and a mounting hole for fixation, the number of the heat dissipation modules is 5, and the heat dissipation modules are arranged on the protruding edge in the form of a center array of heat dissipation disks.

[0013] As a further description of the above technical solution, the second heat dissipation area is arranged on the convex edge in an array along the center of the heat dissipation disk, wherein the number of the second heat dissipation areas is 5, and the second heat dissipation area is composed of a number of independently formed heat dissipation fins, and a slot for airflow is formed between two of the heat dissipation fins.

[0014] As a further description of the above technical solution, a first notch is provided on the outer edge of the heat dissipation module, and the height between the first notch and the heat dissipation disk is 12 mm.

[0015] As a further description of the above technical solution, the heat dissipation fins are arranged in a group of three in a fan shape on the convex edge, and the outer edges of the heat dissipation fins are each provided with a second notch, and the height between the second notch and the heat dissipation disc is 16 mm.

[0016] As a further description of the above technical solution, the mounting portion is a cylinder, and the mounting portion is formed with a cavity for mounting a movable part, and the movable part includes a bearing, wherein the depth of the cavity is 12 mm, and the diameter of the cavity is 34 mm.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The brushless outward-rotating self-priming heat dissipation device of the utility model has at least one of the following beneficial effects during use:

[0019] During use, the heat sink is installed behind the motor. The brushless motor rotates to generate air flow, and the air enters the heat sink through the end cover. Since the heat sink has multiple wedge-shaped structures, air can be sucked into the motor during rotation. Therefore, the motor can be cooled by air without other driving force, which can greatly reduce the production cost. At the same time, the structure can increase the air intake amount, thereby providing heat dissipation for the motor, with high heat dissipation efficiency, and the overall structure is lighter and more reliable, with low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation structure of the brushless outward-rotating self-priming heat dissipation device of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the brushless outward-rotating self-priming heat dissipation device of the utility model;

[0022] Figure 3 This is a schematic diagram of the first end surface structure of the brushless outward-rotating self-priming heat dissipation device of the utility model;

[0023] Figure 4 It is a schematic diagram of the second end surface structure of the brushless outward-rotating self-priming heat dissipation device of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structure diagram of the brushless outward-rotating self-priming heat dissipation device of the utility model.

[0025] Numbers in the figure:

[0026] 1. Motor body; 2. End cover; 3. Heat dissipation mechanism; 301. Heat dissipation disc; 302. Flange; 303. First heat dissipation area; 304. Second heat dissipation area; 305. Mounting part; 306. Movable part; 307. Heat dissipation module; 308. Heat dissipation fins; 309. Notch; 310. First notch; 311. Second notch; 312. Cavity; 313. Bearing. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-5 As shown, the utility model provides a brushless outward-rotating self-priming heat dissipation device, including a motor body 1 and a heat dissipation mechanism 3, wherein the motor body 1 is further provided with an end cover 2 for connecting the heat dissipation mechanism 3, and the end cover 2 has a hollow structure, wherein the motor body 1 is an outward-rotating motor, and after the motor body 1 rotates in a self-rotating manner, the airflow passes through the hollow structure on the end cover 2 and is introduced into the interior of the motor body 1 by the heat dissipation mechanism 3.

[0029] This embodiment realizes air self-priming heat dissipation through the self-rotation of the brushless motor. The heat dissipation device is used in combination with an air guide structure to draw air into the motor through the air guide structure for concentrated heat dissipation, thereby further improving the heat dissipation efficiency.

[0030] The heat dissipation mechanism 3 includes a heat dissipation disk 301, and the edge of the heat dissipation disk 301 is formed with a flange 302. The flange 302 is provided with a wedge-shaped structure for heat dissipation. The wedge-shaped structure includes multiple first heat dissipation areas 303 and second heat dissipation areas 304. The heat dissipation disk 301 is also provided with a mounting portion 305 in the middle. The mounting portion 305 is provided with a movable part 306 for connecting to the motor body 1. The mounting portion 305 is coaxially arranged with the heat dissipation disk 301.

[0031] When the heat dissipation device is installed behind the motor, air flow is generated by the rotation of the brushless motor, and the air enters the heat dissipation device through the end cover 2. Since the heat dissipation mechanism 3 has multiple wedge-shaped structures, air can be sucked into the motor during the rotation, so that the motor can be cooled by air without other driving force, which can greatly reduce the production cost. At the same time, the structure can increase the air intake amount, thereby providing heat dissipation for the motor, with higher heat dissipation efficiency, and the overall structure is lighter and more reliable, with lower maintenance cost.

[0032] It is further explained that the hollow structure of the end cover 2 is a plurality of oblong through holes, and the through holes are arranged in an array with equal intervals along the center of the end cover 2 . The end cover 2 is fixedly connected to the heat dissipation disc 301 .

[0033] It is further explained that a driving shaft for connecting to the track is also provided on one side of the heat dissipation disc 301 , and the driving shaft is integrally formed with the heat dissipation disc 301 , and the driving shaft is passed through the heat dissipation disc 301 through a movable part 306 .

[0034] The drive shaft is formed on the mounting portion 305, the protrusion height between the mounting portion 305 and the heat dissipation disk 301 is 4mm, and there is a chamfer with a radius of 3mm between the protrusion and the drive shaft. The inner hole diameter of the drive shaft is 18mm, and the drive shaft is processed with a blank with a diameter of 35.5mm.

[0035] It is further explained that the diameter of the heat dissipation disk 301 is 95 mm, the heat dissipation disk 301 and the flange 302 are integrally formed, and the flange 302 is arranged around the heat dissipation disk 301, and the thickness of the heat dissipation disk 301 is 5 mm.

[0036] It is further explained that the first heat dissipation area 303 includes a heat dissipation module 307 with a fan-shaped protrusion, the heat dissipation module 307 has two closed slots 309 and a mounting hole for fixation, the number of the heat dissipation modules 307 is 5, and the heat dissipation modules 307 are arranged on the flange 302 in the form of a circle center array of the heat dissipation disk 301.

[0037] It is further explained that the second heat dissipation area 304 is arranged on the convex edge 302 along the center array of the heat dissipation disk 301, wherein the number of the second heat dissipation areas 304 is 5, and the second heat dissipation area 304 is composed of a plurality of independently formed heat dissipation fins 308, and a slot 309 for airflow is formed between two of the heat dissipation fins 308.

[0038] It is further explained that a first notch 310 is formed on the outer edge of each heat dissipation module 307 , and the height between the first notch 310 and the heat dissipation disk 301 is 12 mm.

[0039] It is further explained that the heat dissipation fins 308 are arranged in a group of three in a fan shape on the convex edge 302, and the outer edges of the heat dissipation fins 308 are each provided with a second notch 311, and the height between the second notch 311 and the heat dissipation disk 301 is 16 mm.

[0040] It is further explained that the mounting portion 305 is a cylinder, and the mounting portion 305 is formed with a cavity 312 for mounting a movable part 306, and the movable part 306 includes a bearing 313, wherein the depth of the cavity 312 is 12 mm, and the diameter of the cavity 312 is 34 mm.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. Brushless external self-priming heat dissipation device, characterized by: It includes a motor body and a heat dissipation mechanism, wherein the motor body is further provided with an end cover for connecting the heat dissipation mechanism, and the end cover has a hollow structure, wherein the motor body is an outward-rotating motor, and after the motor body rotates in a self-rotating manner, the airflow passes through the hollow structure on the end cover and is introduced into the motor body by the heat dissipation mechanism; The heat dissipation mechanism includes a heat dissipation disk, the edge of the heat dissipation disk is formed with a convex edge, the convex edge is provided with a wedge-shaped structure for heat dissipation, the wedge-shaped structure includes multiple first heat dissipation areas and second heat dissipation areas, and the middle of the heat dissipation disk is also provided with a mounting portion, the mounting portion is provided with a movable part for connecting to the motor body, and the mounting portion is coaxially arranged with the heat dissipation disk.

2. The brushless outward-rotating self-priming heat dissipation device according to claim 1 is characterized in that: The hollow structure of the end cover is a plurality of oblong through holes, and the through holes are arranged in an array with equal spacing along the center of the end cover. The end cover is fixedly connected to the heat dissipation disc.

3. The brushless outward-rotating self-priming heat dissipation device according to claim 1 is characterized in that: A driving shaft for connecting the crawler track is also provided on one side of the heat dissipation disc. The driving shaft is integrally formed with the heat dissipation disc, and the driving shaft is passed through the heat dissipation disc through a movable part.

4. The brushless outward-rotating self-priming heat dissipation device according to claim 1 is characterized in that: The diameter of the heat dissipation disc is 95 mm. The heat dissipation disc and the flange are integrally formed, and the flange is arranged around the heat dissipation disc, wherein the thickness of the heat dissipation disc is 5 mm.

5. The brushless outward-rotating self-priming heat dissipation device according to claim 1 is characterized in that: The first heat dissipation area includes a heat dissipation module with a fan-shaped protrusion, the heat dissipation module has two closed notches and a mounting hole for fixing, the number of the heat dissipation modules is 5, and the heat dissipation modules are arranged on the protruding edge in the form of a center array of heat dissipation disks.

6. The brushless outward-rotating self-priming heat dissipation device according to claim 1 is characterized in that: The second heat dissipation areas are arranged on the convex edge in an array along the center of the heat dissipation disk, wherein the number of the second heat dissipation areas is 5, and the second heat dissipation areas are composed of a plurality of independently formed heat dissipation fins, and a slot for airflow is formed between two of the heat dissipation fins.

7. The brushless outward-rotating self-priming heat dissipation device according to claim 5, characterized in that: The outer edge of the heat dissipation module is provided with a first notch, and the height between the first notch and the heat dissipation disk is 12 mm.

8. The brushless outward-rotating self-priming heat dissipation device according to claim 6, characterized in that: The heat dissipation fins are arranged in a group of three on the convex edge in a fan shape, and the outer edges of the heat dissipation fins are all provided with a second notch, and the height between the second notch and the heat dissipation disc is 16 mm.

9. The brushless outward-rotating self-priming heat dissipation device according to claim 1, characterized in that: The mounting portion is a cylinder, and is formed with a cavity for mounting a movable part, wherein the movable part includes a bearing, wherein the depth of the cavity is 12 mm, and the diameter of the cavity is 34 mm.

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