Automobile grille and actuator thereof

Abstract

The actuator comprises a motor, a gear transmission set and an output component, the motor adopts a brushless direct current motor, one side of the gear transmission set is in transmission connection with the output end of the motor, the other side of the gear transmission set is in transmission connection with the output component, and the output component is in transmission connection with the output end of the motor. Therefore, the torque from the motor is transmitted to the output part. The utility model further discloses an automobile grille comprising the actuator. The actuator for the automobile grille is large in torque and high in rotating speed.

Description

Technical Field

[0001] The utility model relates to an actuator, in particular to an actuator used for a car grille. Background Art

[0002] The active grille is an important part of the front shape of the car, affecting the design style of the whole car. It is also the entrance for air to flow into the car engine compartment. It measures the engine water temperature, oil temperature, air conditioning system status, intake air temperature and other information, and relies on the motor of the actuator to open or close the shutter of the grille. However, the existing actuator has a small output torque and a low speed. Utility Model Content

[0003] In view of this, the utility model aims to provide an automobile grille and an actuator thereof.

[0004] To this end, the utility model provides, on the one hand, an actuator for an automobile grille, comprising a motor, a gear transmission group and an output component, wherein the motor is a brushless DC motor, one side of the gear transmission group is transmission-connected to the output end of the motor, and the other side of the gear transmission group is transmission-connected to the output component, thereby transmitting the torque from the motor to the output component.

[0005] On the other hand, the utility model provides an automobile grille, comprising the aforementioned actuator for an automobile grille.

[0006] Compared with the prior art (especially the prior art using a stepper motor), the actuator for the automobile grille of the utility model uses a brushless DC motor, so the output torque of the output component is large and the rotation speed is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional schematic diagram of an actuator for a car grille according to an embodiment of the utility model;

[0008] Figure 2 yes Figure 1 An exploded view of one perspective of an actuator for a vehicle grille is shown;

[0009] Figure 3 yes Figure 1 An exploded view showing another perspective of an actuator for a vehicle grille;

[0010] Figure 4 yes Figure 2 An exploded view of a motor for an actuator for an automobile grille is shown;

[0011] Figure 5 yes Figure 2 A top view of a gear train assembly for an actuator for an automotive grille is shown;

[0012] Figure 6 yes Figure 2 A bottom view of a gear train assembly for an actuator for an automotive grille is shown;

[0013] Figure 7 yes Figure 2 A side view of a gear train assembly for an actuator for an automotive grille is shown. DETAILED DESCRIPTION

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods to make the technical solution and beneficial effects of the present invention clearer. It should be understood that the accompanying drawings are only provided for reference and explanation, and are not used to limit the present invention. The dimensions shown in the accompanying drawings are only for the convenience of clear description, and do not limit the proportional relationship.

[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the utility model.

[0016] refer to Figures 1 to 3 The actuator for a car grille of an embodiment of the utility model comprises a housing 10, and a motor 20, a gear transmission group 30, an output component 40, and a circuit board 50 contained in the housing 10. The motor 20 is a brushless DC motor. One side of the gear transmission group 30 is transmission-connected to the output end 200 of the motor 20, and the other side of the gear transmission group 30 is transmission-connected to the output component 40, so as to transmit the torque from the motor 20 to the output component 40. Compared with the actuator using a stepper motor in the prior art, the actuator of the utility model uses a brushless DC motor, which can effectively improve the output torque and speed of the output component 40 of the actuator.

[0017] Specifically, in this embodiment, the housing 10 includes a bottom shell 11 and a top cover 12. The bottom shell 11 has a concave cavity 110. The top cover 12 covers the open end of the concave cavity 110 and is enclosed together with the bottom shell 11 to form a receiving cavity for receiving the motor 20, the gear transmission group 30, the output component 40 and the circuit board 50. As an example, the bottom shell 11 and the top cover 12 are fixedly connected by laser welding.

[0018] refer to Figures 2 to 4In this embodiment, the motor 20 includes a stator 21 and a rotor 22 accommodated in the stator 21 and rotatable relative to the stator 21. The stator 21 includes a stator core 210, an insulating frame 211 and a winding 212. In this embodiment, the stator core 210 includes a plurality of U-shaped sections 213 (three are shown in the figure), teeth 214 protruding inward from the bottom of each U-shaped section 213 (three are shown in the figure), and arc sections 215 (three are shown in the figure) connecting adjacent U-shaped sections 213. The insulating frame 211 is covered on the teeth 214 of the stator core 210. The winding 212 is wound on the corresponding insulating frame 211. Optionally, one or more first joint portions 111 ( Figure 2 It can be seen that the stator core 210 is fastened to the corresponding first engaging portion 111 by one or more fasteners 216 , specifically a convex column, so that the stator 21 is fixed in the housing 10 .

[0019] In this embodiment, the rotor 22 includes a rotating frame 220, a rotor core 221 sleeved outside the rotating frame 220, and a rotating shaft 222 penetrating the rotating frame 220. The rotating frame 220 includes a rotating drum 223 and a driving gear 224 (which serves as the output end 200 of the motor 20) disposed at one end of the rotating drum 223. A limiting ring 225 is disposed at each end of the rotating drum 223, and each limiting ring 225 is provided with a plurality of concave portions 226 and a plurality of convex portions 227. The rotor core 221 is located between the two limiting rings 225 of the rotating drum 223 (for this purpose, preferably, the rotating frame 220 is integrally connected with the rotor core 221 by overmolding). Correspondingly, the two ends of the rotor core 221 are also provided with a plurality of recesses 228 and a plurality of protrusions 229, and the plurality of recesses 228 and the plurality of protrusions 229 of the rotor core 221 are respectively engaged with the plurality of protrusions 227 and the plurality of recesses 226 on the limiting ring 225, thereby improving the connection strength between the rotating frame 220 and the rotor core 221. Figure 2 and Figure 3 As shown, corresponding to the rotating shaft 222 , the bottom shell 11 and the top cover 12 are respectively provided with a second engaging portion 112 , 120 (specifically a convex column), and both ends of the rotating shaft 222 are respectively inserted into the second engaging portions 112 , 120 .

[0020] It can be understood that the specific structure of the above-mentioned motor 20 is only shown as an example. In other embodiments, the motor 20 can also adopt a brushless DC motor with other structures.

[0021] like Figure 2As shown, the circuit board 50 is arranged on one side of the output end 200 of the motor 20, and is electrically connected to the motor 20 through a plurality of first terminals 51, and is externally connected to a power source through a plurality of second terminals 52. In order to avoid the driving gear 224 of the output end 200 of the motor 20, an avoidance hole 53 is provided on the circuit board 50. Optionally, one or more support portions 113 may be formed on the bottom shell 11 for supporting the circuit board 50.

[0022] Also refer to Figure 2-3 as well as Figure 5-7 In this embodiment, the gear transmission group 30 includes a primary gear 31, a secondary gear 32 and a tertiary gear 33. The primary gear 31 is transmission-connected to the output end 200 (i.e., the driving gear 224) of the motor 20, one side of the secondary gear 32 is transmission-connected to the primary gear 31, and the other side of the secondary gear 32 is transmission-connected to the tertiary gear 33, and the tertiary gear 33 is transmission-connected to the output component 40.

[0023] Specifically, in this embodiment, the first gear 31 is supported in the housing 10 by the first shaft 310, and includes a first gear 311 and a second gear 312 arranged coaxially. Figure 2 and Figure 3 As shown, corresponding to the first shaft 310, the bottom shell 11 and the top cover 12 are respectively provided with a third joint portion 114, 121 (specifically a convex column), and the two ends of the first shaft 310 are respectively inserted into the third joint portions 114, 121. In this embodiment, the diameter of the first gear 311 is greater than the diameter of the second gear 312 (therefore, the first gear 311 can be called the large gear of the first-stage gear 31, and the second gear 312 can be called the small gear of the first-stage gear 31), and the first gear 311 is meshed with the driving gear 224 ( Figure 2 visible).

[0024] Similarly, the secondary gear 32 is supported in the housing 10 via the second shaft 320, and includes a coaxially arranged third gear 321 and a fourth gear 322. Figure 2 and Figure 3As shown, corresponding to the second shaft 320, the bottom shell 11 and the top cover 12 are respectively provided with a fourth joint portion 115, 122 (specifically a convex column), and the two ends of the second shaft 320 are respectively inserted into the fourth joint portions 115, 122. In this embodiment, the diameter of the third gear 321 is greater than the diameter of the fourth gear 322 (therefore, the third gear 321 can be called the large gear of the secondary gear 32, and the fourth gear 322 can be called the small gear of the secondary gear 32), and the third gear 321 is meshed with the second gear 312 of the primary gear 31. Preferably, the diameter of the third gear 321 is greater than the diameter of the first gear 311, and the diameter of the fourth gear 322 is greater than the diameter of the second gear 312.

[0025] Similarly, the three-stage gear 33 is supported in the housing 10 via a third shaft 330, and includes a fifth gear 331 and a sixth gear 332 arranged coaxially. Figure 2 and Figure 3 As shown, corresponding to the third shaft 330, the bottom shell 11 and the top cover 12 are respectively provided with a fifth joint portion 116, 123 (specifically a convex column), and the two ends of the third shaft 330 are respectively inserted into the fifth joint portions 116, 123. In this embodiment, the diameter of the fifth gear 331 is greater than the diameter of the sixth gear 332 (therefore, the fifth gear 331 can be called the large gear of the third-stage gear 33, and the sixth gear 332 can be called the small gear of the third-stage gear 33), and the fifth gear 331 is meshed with the fourth gear 322 of the second-stage gear 32, and the sixth gear 332 is transmission-connected with the output component 40. Preferably, the diameter of the sixth gear 332 is greater than the diameter of the fourth gear 322.

[0026] like Figure 2-3 and Figure 7 As shown, in this embodiment, the output component 40 includes a first output end 41, a second output end 42, and a driven gear 43 located between the first output end 41 and the second output end 42, and the driven gear 43 is meshed with the sixth gear 332 of the three-stage gear 33. Preferably, the diameter of the driven gear 43 is greater than the diameter of the sixth gear 332, and more preferably greater than the diameter of the fifth gear 331.

[0027] In this embodiment, the first output end 41 is formed as a shaft, and has a first polygonal hole 410 inside. Corresponding to the first polygonal hole 410, the top cover 12 is formed with a first through hole 124 communicating with the first polygonal hole 410 so as to be externally connected to a driven object. Preferably, a first convex ring 125 surrounding the first through hole 124 is further formed on the top cover 12, and a first sealing ring 411 is arranged between the first output end 41 and the first convex ring 125 so as to be waterproof and dustproof.

[0028] Similarly, in this embodiment, the second output end 42 is also formed as a shaft, and has a second polygonal hole 420 inside. Corresponding to the second polygonal hole 420, the bottom shell 11 is formed with a second through hole 117 communicating with the second polygonal hole 420 so as to be externally connected to a driven object. Preferably, a second convex ring 118 surrounding the second through hole 117 is further formed on the top cover 12, and a second sealing ring 421 is arranged between the second output end 42 and the second convex ring 118 so as to be waterproof and dustproof.

[0029] For the arrangement relationship between the gears of the gear transmission group 30 and the output component 40, please refer to Figure 7 .like Figure 7 As shown, from the side perspective of the gear transmission group 30, the second gear 312 of the first gear 31, the fourth gear 322 of the second gear 32 and the sixth gear 332 of the third gear 33 are arranged in sequence along the axial direction (shown from top to bottom), and the first gear 311 of the first gear 31 is located between the third gear 321 of the second gear 32 and the fifth gear 331 of the third gear 33, and the fifth gear 331 of the third gear 33 is located between the third gear 321 of the second gear 32 and the driven gear 43 of the output component 40. Such an arrangement is compact and helps to reduce the volume of the actuator. It is not difficult to find that in this embodiment, the second gear 312 of the first gear 31 and the third gear 321 of the second gear 32 are relatively closer to the top cover 12. In order to prevent the top cover 12 from interfering with the rotation of the second gear 312 and the third gear 321, it is preferred to provide a groove 126 ( Figure 3 visible).

[0030] The working principle of the actuator of this embodiment is as follows. When the motor 20 is started, the driving gear 224 of the motor 20 rotates, the driving gear drives the first gear 311 to rotate, the second gear 312 rotates synchronously with the first gear 311, the second gear 312 drives the third gear 321 to rotate, the fourth gear 322 rotates synchronously with the third gear 321, the fourth gear 322 drives the fifth gear 331 to rotate, the sixth gear 332 rotates synchronously with the fifth gear 331, and the sixth gear 332 drives the driven gear 43 of the output component 40 to rotate, thereby, the first output end 41 and the second output end 42 of the output component 40 rotate synchronously with the driven gear 43 to achieve torque output. The gear transmission group 30 of this embodiment can effectively reduce the speed of the motor 20 to the desired output speed through the above-mentioned size changes of the gears at each level. In addition, compared with the existing gear transmission mechanism, the gear transmission group 30 of this embodiment helps to improve the output torque and output speed of the output component 40. In practice, the output torque of the output component 40 of the actuator of this embodiment can be as high as 1.2Nm, and the speed can be as high as 4rpm.

[0031] Preferably, each gear of the gear transmission group 30 is made of nylon (PA), especially PA-46 and PA66. For example, the first gear 31 (i.e., the first gear 311 and the second gear 312) can be made of PA-46 in one piece, the second gear 32 (i.e., the third gear 321 and the fourth gear 322) can be made of PA66-GF30 (glass fiber reinforced nylon material) in one piece, the third gear 33 (i.e., the fifth gear 331 and the sixth gear 332) can be made of PA46-GF30 (glass fiber reinforced nylon material) in one piece, and the output component 40 can be made of PA66-GF50 (glass fiber reinforced nylon material) in one piece. Nylon material helps to reduce costs while meeting the requirements of high torque, high speed and long durability of each gear.

[0032] The actuator of the above embodiment is particularly suitable for automobile grilles. Therefore, an embodiment of the present utility model also provides an automobile grille, including the above actuator.

[0033] The above description is only a preferred specific implementation manner of the present invention. The protection scope of the present invention is not limited to the embodiments listed above. Any simple change or equivalent replacement of the technical solution that can be obviously obtained by any technician familiar with the technical field within the technical scope disclosed in the present invention falls within the protection scope of the present invention.

Claims

1. An actuator for a car grille, characterized in that: The invention comprises a motor, a gear transmission group and an output component, wherein the motor is a brushless DC motor, one side of the gear transmission group is transmission-connected to the output end of the motor, and the other side of the gear transmission group is transmission-connected to the output component, so as to transmit the torque from the motor to the output component; The gear transmission group includes a primary gear, a secondary gear and a tertiary gear. The primary gear is transmission-connected to the output end of the motor, one side of the secondary gear is transmission-connected to the primary gear, the other side of the secondary gear is transmission-connected to the tertiary gear, and the tertiary gear is transmission-connected to the output component.

2. The actuator for a vehicle grille according to claim 1, characterized in that: The output end of the motor is provided with a driving gear, and the driving gear is transmission-connected to the first-stage gear; the output component includes a first output end, a second output end and a driven gear located between the first output end and the second output end, and the driven gear is transmission-connected to the third-stage gear.

3. The actuator for a vehicle grille according to claim 1, characterized in that: Each of the first-stage gear, the second-stage gear and the third-stage gear includes a large gear and a small gear which are coaxially arranged, and a diameter of the large gear is larger than a diameter of the small gear.

4. The actuator for a vehicle grille according to claim 3, characterized in that: The large gear of the first-stage gear is transmission-connected to the output end of the motor, the small gear of the first-stage gear is transmission-connected to the large gear of the second-stage gear, the small gear of the second-stage gear is transmission-connected to the large gear of the third-stage gear, and the small gear of the third-stage gear is transmission-connected to the output component.

5. The actuator for a vehicle grille according to claim 3, characterized in that: From the side perspective of the gear transmission group, the pinion of the primary gear, the pinion of the secondary gear and the pinion of the tertiary gear are arranged in sequence along the axial direction, and the large gear of the primary gear is located between the large gear of the secondary gear and the large gear of the tertiary gear.

6. The actuator for a vehicle grille according to claim 1, characterized in that: The gears of the gear transmission set are made of nylon.

7. The actuator for a vehicle grille according to claim 1, characterized in that: The output torque of the output component is 1.2 Nm and the rotation speed is 4 rpm.

8. An automobile grille, comprising the actuator for an automobile grille according to any one of claims 1 to 7.

Images