Grid driving device

Abstract

The grid driving device is provided with a shell, a positioning shaft, a rotor assembly, a stator assembly, an output piece and a transmission module, the positioning shaft is fixed to the shell, the rotor assembly is coaxial with the positioning shaft and can rotate around the positioning shaft, and the stator assembly surrounds the outer side of the stator assembly and is fixed to the shell, so that the rotor assembly can be driven to rotate when the grid driving device is powered on; the output part is rotationally connected to the shell and can be used for being connected with grille blades of an air inlet grille, the transmission module is connected with the rotor assembly and the output part, and when the rotor assembly rotates, the output part can be driven to rotate through transmission of the transmission module, so that control over the rotating angle of the grille blades is achieved; therefore, the rotor is prevented from easily vibrating and deviating in the rotating process, the stability of the rotor assembly during rotation is improved, the stability of the grating driving device during working is improved, and the service life of the grating driving device is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a grille drive device. Background Technology

[0002] The air intake grille is located at the front opening of a car, typically mounted behind the grille and in front of the engine compartment. Through the rotation of its blades, the air intake grille regulates the amount of air entering the engine and reduces drag, thereby improving fuel economy and helping the engine reach its optimal operating temperature more quickly.

[0003] The rotation of the grille blades in the air intake grille is mainly controlled by the drive motor. Existing air intake grille motors, such as the one with announcement number CN220457225U, mainly include a housing, a drive motor, and a transmission module. The motor includes a stator and a rotor. The stator is fixed to the housing, and the rotor is located inside the stator and can rotate under the drive of the stator. One end of the transmission module is connected to the rotor of the motor, and the other end is connected to the air intake grille. Under the drive of the rotor, it can drive and control the rotation of the air intake grille to adjust the grille angle, thereby controlling the air intake volume of the vehicle.

[0004] Although existing grille motors can control the air intake grille by driving the rotor through the stator and transmitting power through the transmission module, the gap between the stator and rotor of the grille motor makes the rotor prone to vibration and deviation during rotation, resulting in poor motor stability and easy damage to the motor. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a grid drive device to solve the technical problem of poor stability of grid drive motors in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a grille driving device, comprising:

[0008] case;

[0009] The positioning shaft is fixed to the housing;

[0010] The rotor assembly is coaxially arranged with and rotatably connected to the positioning shaft; and

[0011] The stator assembly surrounds the outside of the rotor assembly and is fixed to the housing.

[0012] In some embodiments, the grille drive device further includes a limiting module, one end of which is connected to the rotor assembly and the other end of which is attached to the positioning shaft. The limiting module can rotate around the positioning shaft as the rotor assembly rotates.

[0013] In some embodiments, the limiting module includes a limiting block and a spring, the limiting block being fitted with the positioning shaft, and the two ends of the spring abutting against the limiting block and the stator assembly, respectively.

[0014] In some embodiments, an arc-shaped groove is provided on one side of the limiting block, and the positioning shaft is in contact with the bottom wall of the arc-shaped groove.

[0015] In some embodiments, an annular limiting groove is provided on the other side of the limiting block, and the end of the spring near the limiting block is installed in the annular limiting groove.

[0016] In some embodiments, the stator assembly includes an electromagnetic winding and a winding bracket, the winding bracket being fixed to the housing and located around the positioning shaft, and the electromagnetic winding being fixed to the winding bracket.

[0017] In some embodiments, the winding support has an annular mounting cavity and a plurality of mounting slots, each of the mounting slots being spaced apart along the circumferential direction of the winding support on the side of the winding support near the rotor assembly, the annular mounting cavity being located on the side of the winding support away from the rotor assembly, and the electromagnetic winding assembly being mounted on each of the mounting slots and the annular mounting cavity.

[0018] In some embodiments, the rotor assembly includes a rotor, a magnet and a drive gear, the rotor being rotatably connected to the positioning shaft and located inside the stator assembly, the magnet being fixedly sleeved on the rotor, and the drive gear being fixed to the end of the rotor.

[0019] In some embodiments, the output component includes an output shaft and an output gear. The output shaft is rotatably connected to the housing, and the output gear is fixed to the middle part of the output shaft, with its upper and lower sides abutting against the housing.

[0020] In some embodiments, the transmission module includes a plurality of transmission gears, each of which is sequentially meshed and rotatably connected to the housing, and two transmission gears located at the edge mesh with the rotor assembly and the output gear, respectively.

[0021] Compared with the prior art, the grid drive device provided by this utility model consists of a housing, a positioning shaft, a rotor assembly, a stator assembly, an output component, and a transmission module. The positioning shaft is fixed to the housing, the rotor assembly is coaxial with the positioning shaft and can rotate around the positioning shaft, and the stator assembly surrounds the outside of the rotor assembly and is fixed to the housing. When energized, it can drive the rotor assembly to rotate, thereby controlling the rotation angle of the grid blades. Since radial positioning can be achieved through the positioning shaft, vibration and offset of the rotor during rotation are avoided, improving the stability of the rotor assembly during rotation, thus improving the stability of the grid drive device during operation and extending its service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the grille driving device provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the hidden upper cover of the grille drive device provided in this embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the brushless motor of the grille drive device provided in this embodiment of the utility model;

[0025] Figure 4 This is a front view of the brushless motor of the grille drive device provided in this embodiment of the utility model;

[0026] Figure 5 It is along Figure 4 Sectional view along line AA in the middle.

[0027] Labels for each item in the figure:

[0028] 10—Shell shell 11—Bottom shell 12—Top cover

[0029] 20—Positioning shaft; 30—Rotor assembly; 31—Rotor

[0030] 32—Magnetic element; 33—Driving gear; 40—Stator assembly

[0031] 41—Winding support; 42—Electromagnetic winding; 43—Pin.

[0032] 50—Transmission module; 51—Transmission gear; 60—Output component

[0033] 61—Output shaft; 62—Output gear; 70—Circuit board

[0034] 80—Limit module; 81—Limit block; 82—Spring

[0035] 111—Interface; 611—Connecting Hole; 811—Arc-shaped Groove

[0036] 812—Annular limiting groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] To address the technical problem of poor stability in existing grid drive motors, this utility model provides a grid drive device that improves the stability of the grid drive device during operation by stabilizing the rotation of the motor rotor.

[0039] It should be noted that the grille drive device described in this utility model is used for, but not limited to, air intake grilles. For ease of explanation, this utility model only uses the application of the grille drive device to the air intake grille as an example. The principle of the grille drive device applied to other types of equipment is essentially the same as that applied to the air intake grille, and will not be described in detail here.

[0040] The grille driving device provided by this utility model, such as Figure 1-2 As shown, it includes a housing 10, a positioning shaft 20, a rotor assembly 30, and a stator assembly 40. The positioning shaft 20 is fixed to the housing 10. The rotor assembly 30 is coaxially arranged with the positioning shaft 20 and rotatably connected to the positioning shaft 20. The stator assembly 40 is enclosed on the outside of the housing 10 and fixed to the housing 10.

[0041] Specifically, the grid drive device comprises a housing 10, a positioning shaft 20, a rotor assembly 30, a stator assembly 40, an output component 60, and a transmission module 50. The positioning shaft 20 is fixed to the housing 10. The rotor assembly 30 is coaxial with the positioning shaft 20 and can rotate around the positioning shaft 20. The stator assembly 40 surrounds the outside of the rotor assembly 30 and is fixed to the housing 10. When energized, it can drive the rotor assembly 30 to rotate, thereby controlling the rotation angle of the grid blades. Since radial positioning can be achieved through the positioning shaft 20, the rotor 31 is prevented from easily vibrating and shifting during rotation, improving the stability of the rotor assembly 30 during rotation, thus improving the stability of the grid drive device during operation and extending its service life.

[0042] In one embodiment, such as Figure 2As shown, the grille drive device includes a transmission module 50 and an output component 60. The output component 60 includes an output shaft 61 and an output gear 62. The output shaft 61 is rotatably connected to the housing 10, and the output gear 62 is fixed to the middle part of the output shaft 61, with its upper and lower sides abutting against the housing 10 for connection to the grille blades of the air intake grille. The transmission module 50 is connected to the rotor assembly 30 and the output component 60. When the rotor assembly 30 rotates, it can drive the output component 60 to rotate through the transmission of the transmission module 50. Specifically, the output shaft 61 is rotatably connected to the housing 10 and can be connected to the grille blades of the air intake grille. The transmission module 50 is connected to the rotor assembly 30 and the output component 60. When the rotor assembly 30 rotates, the output component 60 can be driven to rotate through the transmission module 50. The output gear 62 can be easily connected to the transmission module 50. By setting the output gear 62 in the middle part of the output shaft 61, the output shaft 61 can be balanced by force, which improves the stability of the output shaft 61 when rotating. The upper and lower sides of the output gear 62 abut against the housing 10, thereby axially limiting the output shaft 61 and ensuring the stability of the output shaft 61.

[0043] In this embodiment, as Figure 1-2 As shown, the housing 10 includes a bottom shell 11, a top cover 12, and an annular mounting bracket (not shown in the figure). The top cover 12 covers the bottom shell 11 and surrounds the bottom shell 11 to form a mounting cavity. The annular mounting bracket is located in the mounting cavity and fixed to the bottom shell 11. A limiting mounting groove is formed on the inner side of the annular mounting bracket. The limiting mounting groove is used to install the stator assembly 40. Several spaced snap-fit ​​grooves are opened in the circumferential direction of the annular mounting bracket. The snap-fit ​​grooves are used to snap the stator assembly 40.

[0044] In this embodiment, the positioning shaft 20 is fixed to the bottom shell 11 and located in the mounting cavity.

[0045] In this embodiment, the rotor assembly 30 and the stator assembly 40 are combined to form a brushless motor structure.

[0046] In one embodiment, such as Figure 3-5 As shown, the rotor assembly 30 includes a rotor 31, a magnet 32, and a drive gear 33. The rotor 31 is rotatably connected to the positioning shaft 20 and located inside the stator assembly 40. The magnet 32 ​​is fixedly sleeved on the rotor 31, and the drive gear 33 is fixed to the end of the rotor 31. Specifically, the magnet 32 ​​can drive the rotor 31 to rotate under the drive of the stator assembly 40, thus causing the rotor 31 to rotate. The rotor 31 is coaxial with the positioning shaft 20, realizing the stable rotation of the rotor assembly 30 around the positioning shaft 20. The rotor 31 can drive the drive gear 33 to rotate synchronously, realizing the output of power from the rotor 31 to the outside through the drive gear 33.

[0047] In one embodiment, such as Figure 3-5As shown, the stator assembly 40 includes a winding bracket 41 and an electromagnetic winding 42. The winding bracket 41 is fixed to the housing 10 and located around the positioning shaft 20, while the electromagnetic winding 42 is fixed to the winding bracket 41. Specifically, the stator assembly 40 is fixed to the housing 10 via the winding bracket 41, which provides a mounting base for the electromagnetic winding 42. When energized, the electromagnetic winding 42 generates magnetic force, thereby driving the rotor assembly 30 to rotate.

[0048] In this embodiment, as Figure 5 As shown, the electromagnetic winding 42 includes several silicon steel sheets stacked in sequence.

[0049] In one embodiment, such as Figure 3-5 As shown, the winding bracket 41 has an annular mounting cavity and several mounting slots. The mounting slots are spaced apart along the circumference of the winding bracket 41 on the side of the winding bracket 41 closest to the rotor assembly 30. The annular mounting cavity is located on the side of the winding bracket 41 furthest from the rotor assembly 30. The electromagnetic winding 42 is mounted in each mounting slot and the annular mounting cavity. Specifically, the mounting slots and annular mounting cavity of the winding bracket 41 allow for the mounting and fixing of the inner and outer double-layered electromagnetic windings 42, thereby providing a stable driving force to the rotor assembly 30 through the double-layered electromagnetic windings 42.

[0050] In this embodiment, as Figure 2 As shown, the stator assembly 40 also includes a plurality of pins 43, one end of each pin 43 being inserted into the winding bracket 41 and connected to the electromagnetic winding 42, and the other end of each pin 43 extending out of the winding bracket 41. The grid drive device also includes a circuit board 70 assembly, which is mounted on the end of each pin 43 extending out of the winding bracket 41, so as to electrically connect the electromagnetic winding 42 through each pin 43 and control the energization of the electromagnetic winding 42.

[0051] In this embodiment, as Figure 1-2 As shown, the bottom housing 11 is provided with a 4-pin connector 111, which is used for external connector connection to transmit control signals to the circuit board 70 assembly.

[0052] In this embodiment, the electromagnetic winding 42 includes an annular portion, several connecting portions, and several driving portions. The connecting portions are evenly spaced and connected to the inner side of the annular portion. Each driving portion is connected to each connecting portion. The annular portion is installed in an annular mounting cavity, and each driving portion is installed in a mounting slot. Each driving portion forms the inner layer structure of the electromagnetic winding 42, and the annular portion forms the outer layer structure of the electromagnetic winding 42. Through the dual-layer driving of the rotor assembly 30 by the driving portions and the annular portion, the driving force on the rotor assembly 30 can be increased.

[0053] Understandably, output component 60 can be any structural component that can be used for grid connection.

[0054] In this embodiment, as Figure 2 As shown, the output shaft 61 is provided with an axially penetrating connecting hole 611, which allows the connecting shaft of the air intake grille to be inserted, thereby realizing the connection between the output shaft 61 and the air intake grille.

[0055] Understandably, the transmission module 50 can be any transmission structure, such as a belt or worm gear, that can transmit power from the rotor 31 to the output component 60.

[0056] In one embodiment, such as Figure 2 As shown, the transmission module 50 includes several transmission gears 51, which are sequentially meshed and rotatably connected to the housing 10. Two transmission gears 51 located at the edge mesh with the rotor 31 and the output gear 62, respectively. Specifically, the power generated by the rotation of the rotor 31 can be transmitted to the output gear 62 through the transmission action of each transmission gear 51, thereby driving the output component 60 to rotate and realizing the transmission of power to the output component 60. By adjusting the tooth diameter of each transmission gear 51, the rotational speed of the output component 60 can be controlled.

[0057] In this embodiment, as Figure 2 As shown, there are four transmission gears 51. The two transmission gears 51 at the edge mesh with the drive gear 33 and the output gear 62 respectively. During the rotation of the drive gear 33, the drive gear 33 is driven to rotate, which in turn drives each transmission gear 51 and the output gear 62 to rotate, ultimately realizing the rotation of the output shaft 61 and realizing the output of power to the air intake grille.

[0058] In one embodiment, such as Figure 5 As shown, the grille drive device also includes a limiting module 80. One end of the limiting module 80 is connected to the rotor assembly 30, and the other end of the limiting module 80 is attached to the positioning shaft 20. The limiting module 80 can rotate around the positioning shaft 20 as the rotor assembly 30 rotates. Specifically, by abutting against the positioning shaft 20, the limiting module 80 can fix the distance between the rotor assembly 30 and the positioning shaft 20, thereby further radially limiting the rotor assembly 30 and improving the stability of the rotor assembly 30.

[0059] Understandably, the limiting module 80 can be any component, such as a limiting rod or a limiting block 81, that can abut against the positioning shaft 20 and rotate around the positioning shaft 20.

[0060] In one embodiment, such as Figure 5As shown, the limiting module 80 includes a limiting block 81 and a spring 82. The limiting block 81 is in contact with the positioning shaft 20, and the two ends of the spring 82 abut against the limiting block 81 and the stator assembly 40, respectively. Specifically, the limiting block 81 can be in contact with the positioning shaft 20 under the elastic force of the spring 82 to radially limit the rotor assembly 30. The setting of the spring 82 enables the limiting module 80 to have a certain buffering capacity, so that while the limiting module 80 can axially limit the rotor assembly 30, it can also leave a certain buffering margin for the rotor assembly 30, thereby avoiding large wear between the limiting block 81 and the positioning shaft 20.

[0061] In this embodiment, the end of the spring 82 away from the limiting block 81 is connected to the rotor 31.

[0062] In one embodiment, such as Figure 5 As shown, an arc-shaped groove 811 is provided on one side of the limiting block 81, and the positioning shaft 20 is in contact with the bottom wall of the arc-shaped groove 811. Specifically, the arc-shaped groove 811 is adapted to the positioning shaft 20 to ensure that the limiting block 81 can maintain a stable contact with the positioning shaft 20, thereby improving the stability of the limiting block 81 rotating around the positioning shaft 20.

[0063] In one embodiment, such as Figure 5 As shown, an annular limiting groove 812 is provided on the other side of the limiting block 81, and one end of the spring 82 near the limiting block 81 is installed in the annular limiting groove 812. Specifically, the annular limiting groove 812 can limit the end of the spring 82 connected to the limiting block 81, thereby improving the stability between the spring 82 and the limiting block 81.

[0064] To better understand this utility model, the following is combined with... Figures 1 to 5 The technical solution of this utility model is described in detail as follows: In the process of using the grille drive device, the grille drive device is first fixed to the air intake grille through the bottom shell 11, and then the connecting shaft of the air intake grille is connected. The external controller is connected to the plug interface 111 on the bottom shell 11, and the circuit control winding is sent to the circuit board 70, so that the electromagnetic winding 42 is energized and provides rotational driving force to the magnetic body 32, thereby driving the rotor 31 and the drive gear 33 to rotate around the positioning shaft 20. Then, through the transmission of each transmission gear 51, the output gear 62 is driven to rotate, and finally the output shaft 61 is driven to rotate, ultimately controlling the grille blades of the air intake grille to rotate, thereby realizing the adjustment of the grille blade rotation angle.

[0065] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A grille driving device, characterized in that, include: case; The positioning shaft is fixed to the housing; The rotor assembly is coaxially arranged with and rotatably connected to the positioning shaft; The stator assembly surrounds the outside of the rotor assembly and is fixed to the housing.

2. The grille driving device according to claim 1, characterized in that, The grille drive device also includes a limiting module, one end of which is connected to the rotor assembly, and the other end of which is attached to the positioning shaft.

3. The grille driving device according to claim 2, characterized in that, The limiting module includes a limiting block and a spring. The limiting block is in contact with the positioning shaft, and the two ends of the spring abut against the limiting block and the stator assembly, respectively.

4. The grille driving device according to claim 3, characterized in that, An arc-shaped groove is provided on one side of the limiting block, and the positioning shaft is in contact with the bottom wall of the arc-shaped groove.

5. The grille driving device according to claim 3, characterized in that, An annular limiting groove is provided on the other side of the limiting block, and the end of the spring near the limiting block is installed in the annular limiting groove.

6. The grille driving device according to any one of claims 1-5, characterized in that, The stator assembly includes an electromagnetic winding and a winding bracket. The winding bracket is fixed to the housing and located on the periphery of the positioning shaft, and the electromagnetic winding is fixed to the winding bracket.

7. The grille driving device according to claim 6, characterized in that, The winding support has an annular mounting cavity and a plurality of mounting slots. Each of the mounting slots is spaced apart along the circumferential direction of the winding support on the side of the winding support close to the rotor assembly. The annular mounting cavity is located on the side of the winding support away from the rotor assembly. The electromagnetic winding assembly is mounted on each of the mounting slots and the annular mounting cavity.

8. The grille driving device according to any one of claims 1-5, characterized in that, The rotor assembly includes a rotor, a magnet and a drive gear. The rotor is rotatably connected to the positioning shaft and located inside the stator assembly. The magnet is fixedly sleeved on the rotor, and the drive gear is fixed to the end of the rotor.

9. The grille driving device according to any one of claims 1-5, characterized in that, The grid drive device also includes an output component and a transmission module. The output component includes an output shaft and an output gear. The output shaft is rotatably connected to the housing. The output gear is fixed to the middle part of the output shaft and abuts against the housing on its upper and lower sides. The transmission module is connected to the rotor assembly and the output gear and is used to drive the output shaft to rotate through the rotation of the rotor assembly.

10. The grille driving device according to claim 9, characterized in that, The transmission module includes several transmission gears, which are sequentially meshed and rotatably connected to the housing. Two transmission gears located at the edge mesh with the rotor assembly and the output gear, respectively.

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