Steering motor outer rotor structure convenient for heat dissipation

Abstract

The utility model relates to the technical field of steering motors, in particular to a steering motor outer rotor structure convenient for heat dissipation, which comprises a rotor body, a heat dissipation assembly is mounted on the outer upper side of the rotor body, a heat conduction assembly is mounted on the outer lower side of the rotor body, and the heat dissipation assembly comprises air blowing blades, an outer ring and an inner ring. The heat dissipation assembly composed of the air blowing blades, the outer ring and the inner ring is installed on the outer upper side of the rotor body, flowing of surface gas during working of the rotor body can be accelerated in an active air blowing mode, wind resistance is prevented from being formed on the outer side of the rotor body, the heat dissipation speed of the surface of the rotor body is higher, and the service life of the rotor body is prolonged. And meanwhile, a heat conduction assembly formed by a heat conduction plate and a heat conduction sheet is mounted on the outer lower side of the rotor body, so that the heat dissipation speed of the surface heat of the rotor body during working can be further accelerated by increasing the heat dissipation area, the heat dissipation efficiency of the rotor body during working is higher, and the rotor body is not easy to damage.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of steering motors, in particular to a steering motor outer rotor structure facilitating heat dissipation. BACKGROUND

[0002] A steering motor is an electric device used in automobiles and other mechanical equipment to help realize steering. It is usually used in an electric power steering system (EPS) to provide auxiliary force for the driver, reduce the burden of operation, and improve the comfort and safety of driving. Among them, the outer rotor is an indispensable component in the outer rotor type steering motor.

[0003] The existing steering motor outer rotor is mainly composed of a bottom opening type cylinder with a smooth outer wall and a driving shaft installed at the middle of the top end of the cylinder. Although the steering motor outer rotor of this structure can realize the transmission of the power of the steering motor by cooperating with the stator of the steering motor, and realize the dissipation of its own heat by passive heat dissipation, during the working process of the steering motor outer rotor, the small heat dissipation area of the outer wall of the steering motor outer rotor and the existence of wind resistance can cause poor heat dissipation performance of the steering motor outer rotor during work, and overheat damage is prone to occur. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the application is to provide a steering motor outer rotor structure facilitating heat dissipation by increasing the heat dissipation area and actively blowing to dissipate heat quickly.

[0005] The above application purpose of the application is realized by the following technical scheme:

[0006] A steering motor outer rotor structure facilitating heat dissipation, comprising a rotor body, a heat dissipation assembly is installed on the outer upper side of the rotor body, and a heat conduction assembly is installed on the outer lower side of the rotor body, the heat dissipation assembly comprises a blowing blade, an outer ring and an inner ring, wherein the inner ring is attached to the rotor body, the blowing blade is located between the outer ring and the inner ring, and the outer ring is located outside the blowing blade; the heat conduction assembly comprises a heat conduction plate and a heat conduction sheet, the heat conduction sheet is attached to the outer wall of the rotor body, and the heat conduction sheet is installed at the back of the heat conduction plate at equal intervals.

[0007] Optionally, the length of the inner ring is greater than the length of the outer ring, and four lock bolts two are installed at equal intervals on the outer lower part of the inner ring.

[0008] Optionally, the lock bolt two penetrates the inner ring, and the lock bolt two is screwed with the rotor body.

[0009] Optionally, the blowing blade is welded with the inner ring and the outer ring, and the blowing blade is a positive rotating blade.

[0010] Optionally, the heat-conducting plate and the rotor body are bonded by heat-conducting glue, and the heat-conducting sheet is formed on the heat-conducting plate.

[0011] Optionally, the number of the heat-conducting sheets on each heat-conducting plate is not less than ten, and the heat-conducting sheets are distributed at equal intervals on the heat-conducting plate.

[0012] Optionally, the bottom of the rotor body is of an open structure, and a driving assembly is further installed at the middle part of the top end of the rotor body.

[0013] Optionally, the driving assembly comprises a belt shaft and a connecting seat, the connecting seat is installed at the middle part of the top end of the rotor body through a lock bolt one, and the belt shaft is installed at the middle part of the top end of the connecting seat.

[0014] In summary, the present application has at least one of the following beneficial technical effects:

[0015] The heat-dissipating assembly composed of the blowing blade, the outer ring and the inner ring is installed on the outer upper side of the rotor body, the flow of the gas on the surface of the rotor body during work can be accelerated by the active blowing, the wind resistance on the outer side of the rotor body is avoided, the heat dissipation speed of the surface of the rotor body is faster, the heat-dissipating assembly composed of the heat-conducting plate and the heat-conducting sheet is installed on the outer lower side of the rotor body, the heat dissipation speed of the surface heat of the rotor body during work is further accelerated by increasing the heat dissipation area, the heat dissipation efficiency of the rotor body during work is higher, and the rotor body is not prone to damage. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view provided by the embodiment of the present application;

[0017] Figure 2 is a main sectional view provided by the embodiment of the present application;

[0018] Figure 3 is a structural schematic view of the heat-conducting assembly provided by the embodiment of the present application;

[0019] Figure 4 is a bottom view provided by the embodiment of the present application.

[0020] Mark for explaining the drawings: 1, driving assembly; 11, belt shaft; 12, connecting seat; 2, heat-dissipating assembly; 21, blowing blade; 22, outer ring; 23, inner ring; 3, rotor body; 4, heat-conducting assembly; 41, heat-conducting plate; 42, heat-conducting sheet; 5, lock bolt two; 6, lock bolt one. DETAILED DESCRIPTION

[0021] The present application is further described in detail below with reference to the drawings.

[0022] In order to more clearly understand the technical solutions shown in the embodiments of the present application, first, the structure and working principle of the existing steering motor outer rotor are introduced.

[0023] The existing steering motor outer rotor is mainly composed of a bottom opening type cylinder with smooth outer wall and a driving shaft installed at the middle part of the top end of the cylinder. The steering motor outer rotor with this structure mainly realizes the transmission of the power of the steering motor by cooperating with the steering motor stator, and realizes the dissipation of its own heat by using passive heat dissipation.

[0024] Please refer to Figures 1-3 The present application discloses a steering motor outer rotor structure for easy heat dissipation, which comprises a rotor body 3, a heat dissipation assembly 2 installed on the outer upper side of the rotor body 3, and a heat conduction assembly 4 installed on the outer lower side of the rotor body 3. The heat dissipation assembly 2 comprises a blowing blade 21, an outer ring 22 and an inner ring 23, wherein the inner ring 23 is attached to the rotor body 3, the blowing blade 21 is located between the outer ring 22 and the inner ring 23, and the outer ring 22 is located outside the blowing blade 21. The heat conduction assembly 4 comprises a heat conduction plate 41 and a heat conduction sheet 42, the heat conduction sheet 42 is attached to the outer wall of the rotor body 3, and the heat conduction sheet 42 is installed at the back of the heat conduction plate 41 at equal intervals.

[0025] Specifically, when the rotor body 3 is working, the inner ring 23, the outer ring 22 and the blowing blade 21 in the heat dissipation assembly 2 will rotate synchronously with the rotor body 3. The blowing blade 21 will blow air to the surface of the rotor body 3 while rotating to avoid wind resistance on the surface of the rotor body 3 and accelerate the dissipation of heat on the surface of the rotor body 3. At the same time, the heat conduction plate 41 and the heat conduction sheet 42 will greatly increase the heat conduction area of the rotor body 3, so that the dissipation speed of the surface heat of the rotor body 3 is further increased when the rotor body 3 is rotating, preventing the rotor body 3 from being damaged due to the untimely dissipation of heat when it is rotating.

[0026] Please refer to Figure 2 and Figure 4 The length of the inner ring 23 is greater than the length of the outer ring 22, and four lock bolts 5 are installed at equal intervals on the outer lower part of the inner ring 23.

[0027] As an embodiment, the length of the inner ring 23 is greater than the length of the outer ring 22, which can ensure that there is space for the lock bolt 5 to be installed on the inner ring 23.

[0028] Please refer to Figure 2 The lock bolt 5 penetrates the inner ring 23, and the lock bolt 5 is screwed with the rotor body 3.

[0029] As an embodiment, the lock bolt 5 penetrates the inner ring 23 and is screwed with the rotor body 3, which can realize the reliable installation and fixation of the inner ring 23 on the rotor body 3 by means of the lock bolt 5.

[0030] Please refer to Figures 1-2 , the blast blade 21 is welded with the inner ring 23 and the outer ring 22, and the blast blade 21 is a positive rotation blade.

[0031] As an embodiment, welding the blast blade 21 with the inner ring 23 and the outer ring 22 can ensure that the blast blade 21 and the inner ring 23 and the outer ring 22 form an integral whole, and the blast blade 21 blows air to the surface of the rotor body 3 when rotating, and the inner ring 23 and the outer ring 22 can play a role of gathering wind, so that the wind sprayed by the blast blade 21 is more concentrated.

[0032] Please refer to Figures 1-2 , the heat conduction plate 41 is bonded with the rotor body 3 by using heat conduction glue, and the heat conduction sheet 42 is formed on the heat conduction plate 41.

[0033] As an embodiment, bonding by using heat conduction glue can ensure reliable installation and fixation of the heat conduction plate 41 on the rotor body 3, and the heat conduction plate 41 and the heat conduction sheet 42 cooperate, so that the heat on the surface of the rotor body 3 can be quickly dissipated.

[0034] Please refer to Figures 1-3 , the heat conduction sheet 42 on each heat conduction plate 41 is not less than ten, and the heat conduction sheet 42 is distributed at equal intervals on the heat conduction plate 41.

[0035] As an embodiment, the installation method of equal interval arrangement can ensure that the heat on each heat conduction sheet 42 can be conveniently dissipated.

[0036] Please refer to Figure 2 and Figure 4 , the bottom of the rotor body 3 is an open structure, and the driving assembly 1 is also installed at the middle part of the top end of the rotor body 3.

[0037] As an embodiment, the open structure of the bottom of the rotor body 3 can ensure convenient sleeve installation of the rotor body 3 on the stator of the steering motor, and the driving assembly 1 can transmit the power of the rotor body 3 to the outside to realize the commutation of the component.

[0038] Please refer to Figures 1-2 , the driving assembly 1 includes a belt shaft 11 and a connecting seat 12, the connecting seat 12 is installed at the middle part of the top end of the rotor body 3 through the lock bolt one 6, and the belt shaft 11 is installed at the middle part of the top end of the connecting seat 12.

[0039] As an embodiment, the connecting seat 12 cooperates with the lock bolt one 6, so that the belt shaft 11 and the rotor body 3 become an integral whole, and the convenient rotation adjustment of the belt shaft 11 with the rotor body 3 is ensured.

[0040] Specific working principle is, using first heat dissipation assembly 2 and heat conducting assembly 4 are installed on the rotor body 3 respectively, then only need to set the rotor body 3 on the stator of steering motor, can make the steering motor outer rotor put into use, wherein in the use process, the inner ring 23 in heat dissipation assembly 2, outer ring 22 and blower blade 21 will rotate with rotor body 3 synchronously, blower blade 21 will blow wind to the surface of rotor body 3 while rotating, to avoid the surface of rotor body 3 forms wind resistance, accelerates the dissipation of heat of the surface of rotor body 3, and under the action of heat conducting plate 41 and heat conducting sheet 42, the heat conduction area of rotor body 3 is greatly increased while rotor body 3 rotates, so that the dissipation speed of surface heat of rotor body 3 is further increased when rotating, prevent rotor body 3 from being damaged due to heat dissipation not in time when rotating, make the rotor body 3 higher heat dissipation efficiency when working.

[0041] The embodiments of the present specific embodiment are the preferred embodiments of the present application, not limited to the protection scope of the present application, therefore: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A steering motor outer rotor structure facilitating heat dissipation, characterized by: The application relates to a rotor body (3) which is provided with a heat-dissipating assembly (2) on the upper side and a heat-conducting assembly (4) on the lower side, wherein the heat-dissipating assembly (2) comprises a blowing blade (21), an outer ring (22) and an inner ring (23), the inner ring (23) is attached to the rotor body (3), the blowing blade (21) is located between the outer ring (22) and the inner ring (23), and the outer ring (22) is located outside the blowing blade (21); the heat-conducting assembly (4) comprises a heat-conducting plate (41) and heat-conducting sheets (42), the heat-conducting sheets (42) are attached to the outer wall of the rotor body (3), and the heat-conducting sheets (42) are equidistantly arranged on the back of the heat-conducting plate (41).

2. The outer rotor structure of the steering motor according to claim 1, wherein: The length of the inner ring (23) is greater than that of the outer ring (22), and four lock bolts II (5) are equidistantly arranged on the lower part of the outer ring (23).

3. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 2, characterized in that: The lock bolts II (5) penetrate the inner ring (23), and the lock bolts II (5) are screwed with the rotor body (3).

4. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 1, characterized in that: The blowing blade (21) is welded with the inner ring (23) and the outer ring (22), and the blowing blade (21) is a positive rotating blade.

5. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 1, characterized in that: The heat-conducting plate (41) is attached to the rotor body (3) by using heat-conducting glue, and the heat-conducting sheets (42) are formed on the heat-conducting plate (41).

6. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 5, characterized in that: The number of the heat-conducting sheets (42) on each heat-conducting plate (41) is not less than ten, and the heat-conducting sheets (42) are equidistantly arranged on the heat-conducting plate (41).

7. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 1, characterized in that: The bottom of the rotor body (3) is of an open structure, and a driving assembly (1) is further arranged on the middle part of the top end of the rotor body (3).

8. The outer rotor structure of the steering motor facilitating heat dissipation according to claim 7, characterized in that: The driving assembly (1) comprises a belt shaft (11) and a connecting seat (12), the connecting seat (12) is arranged on the middle part of the top end of the rotor body (3) by using a lock bolt I (6), and the belt shaft (11) is arranged on the middle part of the top end of the connecting seat (12).

Images