Compact actuator

Abstract

The utility model discloses a compact actuator, and relates to the technical field of automobile spare parts. When the compact actuator is used, a stator and a rotor are matched to drive an output shaft to rotate, and the output shaft is connected with a driving air inlet grille to drive blades to move; the three winding magnetic poles are arranged in the sunken mounting grooves in the bottom of the inner side of the shell, so that the local thickness of the shell is increased, the thickness of the other parts can be reduced, the internal space of the shell is smaller, the utilization rate is higher, meanwhile, the three mounting grooves are arranged, a positioning effect can be achieved when the stator is mounted, and the assembling convenience is improved; and the included angle between the M and the N is 60 degrees, so that the width of the stator in the M direction is narrower, and the length of the required shell is reduced.

Description

Technical Field

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

[0002] Active Grille Shutter (AGS) is an abbreviation of its full name, Active Grille Shutter. AGS's main function is to optimize airflow in the engine compartment by opening and closing blades driven by an electric motor. This results in improved fuel economy: closing the grille during cold starts accelerates warm-up and reduces extra fuel injection; closing it at high speeds reduces wind resistance; enhanced cooling efficiency: opening the grille at high temperatures or under heavy loads increases airflow to aid cooling; and improved aerodynamics: reducing air turbulence and lowering the drag coefficient (by approximately 0.015), especially noticeable at high speeds. This technology is widely used in both traditional gasoline-powered vehicles and new energy vehicles.

[0003] The actuator is an important component of the active air intake grille system, used to drive the opening and closing of the blades. The actuator mainly consists of a housing and a motor and gear set housed within the housing. Due to the limitations of the transmission relationship between the motor and gear set within the housing, the overall size of the actuator is relatively large, resulting in a significant amount of unused space inside the housing.

[0004] In view of this, there is an urgent need for a compact actuator. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model solves the problem using the following technical structure.

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

[0007] A compact actuator includes: a housing, a stator, a rotor, a gear set, and an output shaft; the stator, rotor, and gear set are all disposed within the housing, the output shaft is disposed on the housing, and the rotor is linked to the output shaft via the gear set;

[0008] The stator includes three wound magnetic poles, which are evenly arranged along the circumference of the rotor. The inner cavity of the housing is provided with a mounting groove, which is formed by sinking down from the bottom of the inner cavity of the housing. The three wound magnetic poles are arranged in the mounting groove.

[0009] The line connecting the center of the output shaft and the center of the stator is M, the radial line of the stator in the direction of one of the winding magnetic poles is N, and the angle between M and N is 60 degrees.

[0010] Due to this design, the three wound magnetic poles are set in the recessed mounting groove at the bottom of the inner side of the housing, which increases the local thickness of the housing while reducing the thickness of the rest, making the internal space of the housing smaller.

[0011] In one specific implementation scheme, three mounting slots are provided, and the three wound magnetic pole coils are respectively disposed in the three mounting slots. The three mounting slots can play a positioning role during stator installation, improving the convenience of assembly.

[0012] In one specific implementation, the three mounting slots are evenly distributed circumferentially to match the positions of the three wound magnetic poles.

[0013] In one specific implementation scheme, the stator is chamfered at the farthest ends on both sides of M. That is, the end faces of the stator at the farthest positions on both sides of M are set as flat, so as to minimize the width of the stator and reduce the overall size.

[0014] In one specific implementation, the radial line of the rotor in the direction of one of the mounting slots coincides with M to match the mounting of the wound magnetic poles.

[0015] In one specific implementation, the gear set includes a first double gear, a second double gear, and a third double gear. The large gear of the first double gear meshes with the rotor, the large gear of the second double gear meshes with the small gear of the first double gear, the large gear of the third double gear meshes with the small gear of the second double gear, and the small gear of the third double gear meshes with the output shaft. The three-stage double gear design ensures that the output torque meets the requirements.

[0016] In one specific implementation, the direction of the large gear relative to the small gear in the first double gear is opposite to the direction of the large gear relative to the small gear in the second double gear; the direction of the large gear relative to the small gear in the second double gear is the same as the direction of the large gear relative to the small gear in the third double gear, so that the space between the large gear and the small gear between two adjacent double gears is complementary, reducing the height of the gear set in the axial direction of the double gear, and making the internal structure of the housing more compact.

[0017] In one specific implementation, the housing is provided with a positioning shaft hole between three mounting slots, and one end of the rotor passes through the positioning shaft hole to facilitate the positioning and installation of the rotor.

[0018] In one specific implementation, the stator is provided with three magnetic pole teeth, which are evenly distributed circumferentially around the rotor. The magnetic pole teeth are strip-shaped and extend from the side away from the rotor toward the rotor axis. The three wound magnetic pole coils are respectively threaded through the three magnetic pole teeth. Since the magnetic pole teeth are strip-shaped, the wound magnetic pole coils can be directly sleeved on the magnetic pole teeth through the free ends during installation.

[0019] In one specific implementation, a circuit board is provided inside the housing, and the circuit board is provided with multiple tin-plated through holes. Each of the magnetic pole teeth is provided with a pin, which is inserted into the corresponding tin-plated through hole. The pin is inserted into the corresponding tin-plated through hole through elastic deformation, thereby achieving solderless conduction.

[0020] The above-described structure of this utility model can achieve the following beneficial effects:

[0021] In use, the stator and rotor work together to drive the output shaft to rotate. The output shaft is connected to the active air intake grille, which drives the blades to move. Because the three wound magnetic poles are set in the recessed mounting slots at the bottom of the inner side of the housing, the local thickness of the housing is increased, while the thickness of the rest can be reduced, making the internal space of the housing smaller and more efficient. At the same time, the mounting slots can also be used to position the stator during installation, improving the ease of assembly. Furthermore, the 60-degree angle between M and N makes the width of the stator in the M direction narrower, reducing the required length of the housing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0023] Figure 2 This is a structural schematic diagram from another perspective of this embodiment;

[0024] Figure 3 This is a schematic diagram of the internal structure of the shell in this embodiment;

[0025] Figure 4 This is a schematic diagram of the main body of the shell in this embodiment;

[0026] Figure 5 This is a front view of the interior of the housing in this embodiment;

[0027] Figure 6 This is a schematic diagram of the internal structure of the shell in this embodiment;

[0028] Figure 7 This is a schematic diagram of the stator structure in this embodiment;

[0029] Figure 8 This is a schematic diagram of the stator body in this embodiment.

[0030] In the diagram: 100, housing; 110, mounting groove; 120, positioning shaft hole; 200, stator; 210, wound magnetic pole; 220, magnetic pole teeth; 230, chamfer; 300, rotor; 400, output shaft; 500, first double gear; 600, second double gear; 700, third double gear; 800, pin. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0033] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0034] refer to Figure 1-4 A compact actuator is shown, comprising: a housing 100, a stator 200, a rotor 300, a gear set, and an output shaft 400; the stator 200, the rotor 300, and the gear set are all disposed within the housing 100, the output shaft 400 is disposed on the housing 100, and the rotor 300 is linked to the output shaft 400 through the gear set;

[0035] The stator 200 includes three wound magnetic poles 210. The three independent wound magnetic poles 210 are mounted on silicon steel laminations. The three wound magnetic poles 210 are evenly arranged in a circle around the stator 200 (that is, the three wound magnetic poles 210 are evenly arranged along the circumference of the rotor 300). The inner cavity of the housing 100 is provided with a mounting groove 110. The mounting groove 110 is formed by sinking from the bottom of the inner cavity of the housing 100. The three wound magnetic poles 210 are arranged in the mounting groove 110.

[0036] The line connecting the output shaft 400 and the stator 200 is M, the radial line of the stator 200 in the direction of one of the winding magnetic poles 210 is N, and the angle between M and N is 60 degrees.

[0037] Based on the above structure, in use, the stator 200 and rotor 300 cooperate to drive the output shaft 400 to rotate. The output shaft 400 is connected to the active air intake grille to drive the blades to move. Since the three wound magnetic poles 210 are set in the recessed mounting groove 110 at the bottom of the inner side of the housing 100, the local thickness of the housing 100 is increased, while the thickness of the rest can be reduced, making the internal space of the housing 100 smaller and the utilization rate higher. At the same time, the mounting groove 110 can play a positioning role when the stator 200 is installed, improving the convenience of assembly. Furthermore, the angle between M and N is limited to 60 degrees, making the width of the stator 200 in the M direction narrower, reducing the required length of the housing.

[0038] like Figure 2 As shown, in this embodiment, there are three mounting slots 110, and three wound magnetic pole coils 210 are respectively set in the three mounting slots 110. The three mounting slots 110 are preferably evenly distributed in a circle. In order to match the position of the three wound magnetic poles 210, the radial line of the rotor 300 in the direction of one of the mounting slots 110 coincides with M.

[0039] like Figure 3 As shown, in order to further reduce the overall size of this application, the stator 200 is provided with chamfers 230 on both sides of M. That is to say, the stator 200 is set as a plane on both sides of M, so as to reduce the width of the stator 200 as much as possible and achieve the purpose of reducing the overall size.

[0040] like Figure 1 and Figure 2 As shown, the output shaft 400 is annular, and a spline is provided on the inner side of the output shaft 400; and both ends of the output shaft 400 penetrate the housing 100, and both ends of the output shaft 400 are fixed to the housing 100 by bearings, and the spline on the inner side of the output shaft 400 enables double-sided connection with the outside.

[0041] like Figures 3-6 As shown, in order to reduce the speed of the output shaft 400, the gear set is a reduction gear set; in this embodiment, the gear set includes a first double gear 500, a second double gear 600, and a third double gear 700. The large gear of the first double gear 500 meshes with the rotor 300, the large gear of the second double gear 600 meshes with the small gear of the first double gear 500, the large gear of the third double gear 700 meshes with the small gear of the second double gear 600, and the small gear of the third double gear 700 meshes with the output shaft 400. Through the transmission design of the three double gears, the speed reduction effect is achieved, so that the output shaft 400 is at a lower speed.

[0042] Further optimizations include, for example Figure 6As shown, in order to further reduce the size of the housing 100, the direction of the large gear relative to the small gear in the first double gear 500 is opposite to that in the second double gear 600; the direction of the large gear relative to the small gear in the second double gear 600 is the same as that in the third double gear 700. That is to say, the large and small gears of the first double gear 500 and the second double gear 600 are set in different directions, while the large and small gears of the second double gear 600 and the third double gear 700 are set in the same direction. This makes the space between the large and small gears of adjacent double gears complementary, reduces the height of the gear set in the axial direction of the double gears, and makes the internal structure of the housing 100 more compact.

[0043] Further optimizations include, for example Figure 4 As shown, the housing 100 has a positioning shaft hole 120 between the three mounting slots 110, and one end of the rotor 300 passes through the positioning shaft hole 120, which facilitates the positioning and installation of the rotor 300.

[0044] like Figure 7 and Figure 8 As shown, the stator 200 is provided with three magnetic pole teeth 220, which are evenly distributed in a circular pattern around the rotor 300. The magnetic pole teeth 220 are strip-shaped and extend from the side away from the rotor 300 toward the axis of the rotor 300. Three wound magnetic pole coils 210 are respectively threaded through the three magnetic pole teeth 220. In this way, since the magnetic pole teeth 220 are strip-shaped, the wound magnetic pole coils 210 can be directly fitted onto the magnetic pole teeth 220 through the free end (the end closer to the rotor 300) during installation. That is to say, the magnetic pole teeth 220 adopt a poleless shoe design, which allows the magnetic pole teeth 220 to be directly inserted into the pre-wound wire frame of the wound magnetic pole coils 210 to complete the installation, making the assembly process simpler, improving the winding efficiency by 40%, saving 50% of the frame assembly time, and achieving a slot fill factor of ≥90%.

[0045] like Figure 7 As shown, in this embodiment, the coil power supply connection adopts hollow pins. A circuit board (not shown) is provided inside the housing 100. The circuit board is provided with multiple tin-plated through holes. Each of the magnetic pole teeth 220 is provided with a pin 800. The pin is elastic. The pin 800 is inserted into the corresponding tin-plated through hole (the inner diameter of the through hole is 0.1-0.2mm smaller than the outer diameter of the pin). Through elastic deformation, it is inserted into the corresponding tin-plated through hole to achieve solderless conduction.

[0046] like Figure 1 and Figure 2The housing 100 shown includes a housing body and a housing cover plate disposed at the opening of the housing body; the housing cover plate is fixed to the housing body by bolts, which facilitates the disassembly and assembly of the housing 100 and the disassembly and assembly of the internal components of the housing 100.

[0047] In summary, during use, the stator 200 and rotor 300 work together to drive the output shaft 400 to rotate. The output shaft 400 is connected to the active air intake grille, driving the blades to move. Because the three wound magnetic poles 210 are located in the recessed mounting groove 110 at the bottom of the inner side of the housing 100, the local thickness of the housing 100 is increased, while the thickness of the rest can be reduced, making the internal space of the housing 100 smaller and the utilization rate higher. At the same time, the three mounting grooves 110 can play a positioning role when the stator 200 is installed, improving the convenience of assembly. Furthermore, the angle between M and N is limited to 60 degrees, making the width of the stator 200 in the M direction narrower, reducing the required length of the housing.

[0048] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that can be directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.

Claims

1. A compact actuator, characterized in that, include: The system comprises a housing (100), a stator (200), a rotor (300), a gear set, and an output shaft (400); the stator (200), rotor (300), and gear set are all disposed within the housing (100), the output shaft (400) is disposed on the housing (100), and the rotor (300) is linked to the output shaft (400) via the gear set; The stator (200) includes three wound magnetic pole coils (210), which are evenly arranged along the circumference of the rotor (300); The line connecting the center of the output shaft (400) and the center of the stator (200) is M, the radial line of the center of the stator (200) in the direction of one of the wound magnetic pole coils (210) is N, and the angle between M and N is 60 degrees. The inner cavity of the housing (100) is provided with a mounting groove (110), which is formed by sinking down from the bottom of the inner cavity of the housing (100), and the three wound magnetic pole coils (210) are disposed at the mounting groove (110).

2. The compact actuator according to claim 1, characterized in that: There are three mounting slots (110), and the three wound magnetic pole coils (210) are respectively located in the three mounting slots (110).

3. The compact actuator according to claim 2, characterized in that: The three mounting slots (110) are evenly distributed around the circumference.

4. The compact actuator according to claim 1, characterized in that: The stator (200) is provided with chamfers (230) at the farthest ends on both sides of M.

5. A compact actuator according to claim 3, characterized in that: The radial line of the rotor (300) in the direction in which one of the mounting slots (110) is located coincides with M.

6. A compact actuator according to claim 1, characterized in that: The gear set includes a first double gear (500), a second double gear (600), and a third double gear (700). The large gear of the first double gear (500) meshes with the rotor (300), the large gear of the second double gear (600) meshes with the small gear of the first double gear (500), the large gear of the third double gear (700) meshes with the small gear of the second double gear (600), and the small gear of the third double gear (700) meshes with the output shaft (400).

7. A compact actuator according to claim 6, characterized in that: In the first double gear (500), the direction of the large gear relative to the small gear is opposite to that of the large gear relative to the small gear in the second double gear (600); In the second double gear (600), the direction of the large gear relative to the small gear is the same as that of the large gear relative to the small gear in the third double gear (700).

8. A compact actuator according to claim 1, characterized in that: The housing (100) is provided with a positioning shaft hole (120), and one end of the rotor (300) passes through the positioning shaft hole (120).

9. A compact actuator according to claim 1, characterized in that: The stator (200) is provided with three magnetic pole teeth (220), which are evenly distributed in a circle around the rotor (300). The magnetic pole teeth (220) are strip-shaped and extend from the side away from the rotor (300) toward the axis of the rotor (300). The three wound magnetic pole coils (210) are respectively threaded on the three magnetic pole teeth (220).

10. A compact actuator according to claim 9, characterized in that: A circuit board is provided inside the housing (100), and a plurality of tin-plated through holes are provided on the circuit board. Each of the magnetic pole inserts (220) is provided with a pin (800), and the pin (800) is located inside the tin-plated through hole.

Images