Highly integrated actuator

Abstract

The invention discloses a high-integration type actuator which comprises an upper cover, a lower cover, a lower cover, an upper cover and a lower cover, and an avoiding part is arranged on the inner side of the upper cover; the lower shell is provided with a containing cavity, the containing cavity comprises a first containing cavity used for containing the driving piece and a second containing cavity used for containing the gear set, and the upper cover is used for being connected to the opening of the lower shell; the gear set comprises an output gear piece, a second gear piece and a third gear piece, the second gear piece and the third gear piece respectively comprise a fan-shaped transmission gear and a shaft-shaped transmission gear which are coaxially arranged, and a gear of the output gear piece is in meshed connection with the shaft-shaped transmission gear of the second gear piece; the fan-shaped transmission gear of the second gear piece is in meshed connection with the shaft-shaped transmission gear of the third gear piece, the fan-shaped transmission gear of the second gear piece is located at the bottom of the output gear piece and the bottom of the third gear piece, and the avoiding part is used for avoiding the top of the second gear piece and avoiding the rotating path of the second gear piece; and the driving module is arranged in the first containing cavity, and a rotating shaft of the driving module is connected with the fan-shaped transmission gear of the third gear in a meshed mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of actuators, in particular to a high-integration actuator. BACKGROUND

[0002] With the intensification of competition in the automobile market, consumers have increasingly high requirements for the power performance of automobiles. Turbocharging technology can effectively improve the power and torque of the engine without increasing the displacement of the engine, meeting people's pursuit of vehicle power. Electronic actuators, as key control components of turbochargers, can accurately control the working state of the turbocharger, so that the engine can obtain good power output under different working conditions.

[0003] The current actuator has low integration, and the actuator occupies a large volume in the automobile. The current volume of the actuator is caused by various reasons, and the overall performance is improved, so a high-integration actuator is still needed to solve the above problems. SUMMARY

[0004] The present application provides a high-integration actuator to solve the above problems.

[0005] The purpose of the present application is achieved by the following technical solutions: A high-integration actuator, comprising: an upper cover; a lower shell, the lower shell is provided with a receiving cavity, the receiving cavity includes a first receiving cavity for accommodating a driving member, and a second receiving cavity for accommodating a gear set, the upper cover is used to be connected at the opening of the lower shell; a gear set, the gear set includes an output gear member, a second gear member and a third gear member, the second gear member and the third gear member respectively include coaxially arranged and opposite sector transmission gears and shaft transmission gears, the gear of the output gear member is connected with the shaft transmission gear of the second gear member, the sector transmission gear of the second gear member is connected with the shaft transmission gear of the third gear member, and the sector transmission gears of the second gear member are located at the bottom of the output gear member and the third gear member; a driving module, the driving module is arranged in the first receiving cavity, and the rotating shaft of the driving module is connected with the sector transmission gear of the third gear Preferably, the shaft transmission gear of the second gear member has a guide surface on the side away from the sector transmission gear, for guiding the output gear member and the third gear member to be inserted along the axial direction of the second gear member and connected with the second gear member.

[0006] Preferably, it further comprises a PCB board, and the PCB board is arranged in the receiving cavity. The output gear member comprises a magnetic gear sleeve and a fan gear shaft accommodated in the center of the magnetic gear sleeve, and a magnetic element accommodated in the bottom of the magnetic gear sleeve; The fan gear shaft is rotationally connected to the upper cover, one end of which extends from the outside of the upper cover for driving, and the other end of which is spaced apart from the PCB board at the end face and is concentrically arranged with the Hall element on the PCB board.

[0007] Preferably, the diameter of the magnetic element is smaller than the shaft diameter of the magnetic gear sleeve, and the magnetic element is embedded in the shaft part of the magnetic gear sleeve.

[0008] Preferably, the lower shell has a limiting post and a limiting terminal corresponding to the PCB board, the limiting terminal is used for being inserted into the hole of the PCB board and elastically abutting the hole wall, and the limiting post is used for being riveted through the corresponding hole of the PCB board after the limiting terminal and the PCB board are inserted.

[0009] Preferably, the fan gear shaft and the upper cover are connected through a rotating assembly, the upper cover has a connecting cavity, and the rotating assembly comprises a bushing and a bearing, the bushing abuts the bottom of the bearing and is located close to the inside of the upper cover.

[0010] Preferably, the upper cover has a limiting part at the port corresponding to the connecting cavity on the outside, and / or, the port corresponding to the connecting cavity on the inside, for preventing the rotating assembly from moving along the axis direction of the fan gear shaft.

[0011] Preferably, the lower shell has a heat dissipation pattern corresponding to the outside of the first accommodating cavity, the heat dissipation pattern is protruded from the outer surface of the lower shell; The lower shell comprises a main body, an end cover and an elastic element, the end cover is sealingly connected to the main body corresponding to the first accommodating cavity, and the inside of the end cover abuts the bottom of the driving module through the elastic element, so that the rotating shaft of the driving module extends towards the gear set.

[0012] Preferably, the upper cover and / or the lower cover has a ventilation hole and a waterproof and breathable film layer covering the ventilation hole and located inside the accommodating cavity.

[0013] Compared with the prior art, the present application has at least the following beneficial effects: The accommodating cavities are arranged on the lower shell and accommodate the gear set and the driving module respectively, the accommodating cavities are used for accommodating the driving module and the gear set respectively, and the shapes are matched with the upper and lower shapes of the assembled gear set, so that the volume occupied by the gear set after being assembled is reduced, the second gear is placed upside down, the center of gravity of the larger diameter fan-shaped transmission gear is moved downward during assembly, the difficulty of assembly is reduced, the second gear part is pressed and assembled as a previous step, and the second gear part is used as a transmission gear between the output gear part and the third gear part, the output gear part and the third gear part are assembled on the two sides of the second gear part in sequence, the second gear part with high center of gravity is avoided to be assembled later, and the gears with different positions need to be meshed on the two sides, which is difficult. After the combination mode of the gear set is improved, the overall volume of the actuator is reduced, the assembly steps and difficulty are simplified, the integration design of the actuator is improved, and the occupied volume in the automobile is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is an actuator structure explosion of an embodiment of the present application Figure 1 ; Figure 2 is a partial enlarged view of A of Figure 1 ; Figure 3 is an actuator structure explosion of an embodiment of the present application Figure 2 ; Figure 4 is a sectional view of an embodiment of the present application Figure 5 is a side sectional view of an embodiment of the present application Figure 6 is a partial enlarged view of B of Figure 5 ; Figure 7 is a structure diagram of an embodiment of the present application.

[0015] 1, upper cover; 11, avoiding part; 2, lower shell; 21, accommodating cavity; 211, first accommodating cavity; 212, second accommodating cavity; 213, limiting column; 214, limiting terminal; 3, gear set; 31, output gear part; 311, magnetic gear shaft sleeve; 312, fan gear shaft; 313, magnetic part; 32, second gear part; 33, third gear part; 34, fan-shaped transmission gear; 35, shaft-shaped transmission gear; 36, guide surface; 4, driving module; 5, PCB board; 51, Hall element; 6, limiting part; 7, heat dissipation pattern; 8, bushing; 9, bearing. DETAILED DESCRIPTION

[0016] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any number of manners, and are not limited to the embodiments described herein; rather, embodiments are provided as non-limiting examples so that this disclosure will be more fully understood. Like reference numerals refer to like or similar structures throughout the figures, and description of them will be omitted.

[0017] The expression of position and direction described in the present application is illustrated by taking the drawings as an example, but changes can also be made as needed, and the changes made are included in the protection scope of the present application.

[0018] With reference to Figures 1-7 The present application provides a high-integration actuator, comprising: an upper cover 1, a lower shell 2 and a gear set 3. The inner side of the upper cover 1 is provided with a relief portion 11. The relief portion 11 is a groove matching the shape and top trend of the second gear member 32 The lower shell 2 is provided with a receiving cavity, which comprises a first receiving cavity 211 for accommodating a driving member, and a second receiving cavity 212 for accommodating the gear set 3, and the upper cover 1 is used to abut at the opening of the lower shell 2.

[0019] The gear set 3 comprises an output gear member 31, a second gear member 32 and a third gear member 33, the second gear member 32 and the third gear member 33 respectively comprise a coaxially arranged sector transmission gear 34 and a shaft transmission gear 35, the gear of the output gear member 31 is connected in mesh with the shaft transmission gear 35 of the second gear member 32, the sector transmission gear 34 of the second gear member 32 is connected in mesh with the shaft transmission gear 35 of the third gear member 33, and the sector transmission gear 34 of the second gear member 32 is located at the bottom of the output gear member 31 and the third gear member 33. The outer shaft end of the output gear member 31 is used to connect the blades of a turbine. By installing the second gear member 32 in a downward manner at the bottom of the lower shell 2, and locating the sector transmission gear 34 at the bottom, the center of gravity of the second gear member 32 is lowered, the stability is stronger, and the assembly difficulty is reduced. Then the output gear member 31 and the third gear member 33 are sequentially inserted on both sides of the second gear member 32, without the need to simultaneously mesh connect the gears on both sides and align the teeth when inserting, thus reducing the difficulty. In addition, the layout mode of the gear set 3 is improved, and the relief portion 11 is provided on the inner side of the upper cover 1, which matches the shape of the smaller diameter shaft transmission gear 35, thereby reducing the overall size of the upper cover 1, thus reducing the occupied volume of the overall actuator, and also improving the assembly efficiency and reducing the assembly difficulty.

[0020] A driving module 4 is arranged in the first accommodating cavity 211, and a rotating shaft of the driving module 4 is engaged with the sector transmission gear 34 of the third gear.

[0021] Preferably, the shaft transmission gear 35 of the second gear member 32 has a guide surface on a side away from the sector transmission gear 34, for guiding the output gear member 31 and the third gear member 33 to be inserted along the axial direction of the second gear member 32 and engaged with the second gear member 32, wherein the guide surface is an inverted V-shaped guide slope formed on the side wall of the gear, which can drive the edge of the end surface of the output gear member 31 to rotate when the adjacent output gear member 31 is pressed vertically along the axial direction of the second gear member 32, and the guide surface can make the teeth of the second gear member 32 and the output gear member 31 to be engaged, thereby avoiding the cumbersome step of manually adjusting the two end surfaces to be aligned.

[0022] Referring to Figure 5 The output gear member 31 includes a magnetic gear sleeve 311 and a sector gear 312 arranged at the axial center of the magnetic gear sleeve 311, and a magnetic member 313 arranged at the bottom of the magnetic gear sleeve 311. The sector gear 312 is rotationally connected to the upper cover 1, and one end thereof extends outward from the upper cover 1 for driving, and the other end is arranged in a spaced manner with the Hall element 51 on the PCB 5 and is arranged concentrically with the Hall element 51. The magnetic gear sleeve 311 is integrally formed by injection molding, so as to be covered in the shaft of the magnetic gear sleeve 311, and the magnetic member 313 is in a cylindrical shape with a diameter smaller than that of the magnetic gear sleeve 311, so as to be covered at the bottom of the magnetic gear sleeve 311, thereby avoiding the magnetic member 313 from being assembled at the shaft of the magnetic gear sleeve 311 through an additional step, reducing the risk of the magnetic member 313 being thrown off, and the magnet injection molded at the end of the shaft of the magnetic gear sleeve 311 does not affect the diameter of the sector gear 312 at the top, and the combination of the sector gear 312 and the upper cover 1 avoids the increase in the overall volume of the rotating assembly connected between the upper covers 1 due to the increase in the diameter of the shaft of the magnetic gear sleeve 311, reduces the overall volume of the magnetic gear sleeve 311, and thus reduces the overall volume of the upper cover 1. The integrated degree is higher, and the flexibility is stronger.

[0023] In addition, the Hall element 51 and the magnet on the PCB 5 are arranged coaxially, so that the magnetic circuit is more symmetrical and stable, the magnetic field transmission is more uniform, the Hall element 51 can receive a more stable and accurate magnetic field signal, and the measurement accuracy is improved. The output gear member 31 of the actuator can be more accurately identified.

[0024] Preferably, the diameter of the magnetic member 313 is smaller than the shaft diameter of the magnetic gear shaft sleeve 311, and the magnetic member 313 is embedded in the shaft part of the magnetic gear shaft sleeve 311.

[0025] In an embodiment, the lower shell 2 is provided with a limiting post 213 and a limiting terminal 214 corresponding to the PCB 5, the limiting terminal 214 is inserted into the hole of the PCB 5 and elastically abuts against the hole wall, and the limiting post 213 is riveted through the corresponding hole of the PCB 5 after the limiting terminal 214 and the PCB 5 are inserted. The limiting terminal 214 is approximately elliptical and includes a middle protrusion and thinner sides, and when it is inserted into the hole, the protrusion elastically abuts against the hole. Then, the remaining limiting posts 213 inserted through the corresponding holes are completely positioned by a hot riveting process, thereby improving the stability of the PCB 5 on the lower shell 2.

[0026] Preferably, the fan teeth 312 and the upper cover 1 are connected by a rotating assembly, the upper cover 1 is provided with a connecting cavity, the rotating assembly includes a bushing 8 and a bearing 9, the bushing 8 abuts against the bottom of the bearing 9 and is located close to the inner side of the upper cover 1. The upper cover 1 is supported on one side, and the part and structure for receiving the rotating shaft are not arranged on the lower shell 2, thereby simplifying the structure design, improving the stability of the fan teeth 312 during rotation by the cooperation of the bushing 8 and the bearing 9, and achieving high-precision rotation adjustment.

[0027] In an embodiment, the upper cover 1 is provided with a limiting part 6 corresponding to the port of the connecting cavity on the outer side and / or the inner side, for preventing the rotating assembly from moving along the axis direction of the fan teeth 312. The limiting part 6 can be a protrusion located at the port or a part protruding towards the inner side of the port, and blocks the bushing 8 and the bearing 9 from falling off the upper cover 1, thereby improving the overall stability of the actuator.

[0028] Preferably, the lower shell 2 is provided with heat dissipation lines 7 corresponding to the outer side of the first accommodating cavity 211, and the heat dissipation lines 7 protrude from the outer surface of the lower shell 2.

[0029] The lower shell 2 includes a main body, an end cover and an elastic member, the end cover is sealingly connected to the main body corresponding to the first accommodating cavity 211, and the inner side of the end cover abuts against the bottom of the driving module 4 through the elastic member, so that the rotating shaft of the driving module 4 protrudes towards the gear set 3. The driving module 4 is, for example, an electric machine or a motor, the bottom of the driving module 4 abuts against the end cover through the elastic member, and the end cover and the main body are connected by laser welding, so that the driving module 4 is always in a closely fitted state in the lower shell 2, thereby providing strong stability during work.

[0030] Preferably, the upper cover 1 and / or the lower cover is provided with air permeable holes and an air permeable waterproof film layer (not shown in the figure) covering the air permeable holes and located inside the accommodating cavity. The air permeable holes can be through holes provided on the upper cover 1 or the lower cover, and the edges of the air permeable waterproof film layer adjacent to the air permeable holes are fixed by means of glue. When the temperature is too high during the operation of the actuator, the air permeable waterproof film layer opens to release part of the air pressure under the pressure of the air pressure, thereby avoiding the deformation or damage of the actuator caused by the concentration of the internal temperature of the actuator.

[0031] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments without departing from the principles and purposes of the present application within the scope of the present application, and all these changes should be within the protection scope of the claims of the present application.

Claims

1. A highly integrated actuator, characterized in that, include: The upper cover has an abutment on its inner side; The lower shell has a receiving cavity, which includes a first receiving cavity for accommodating a drive component and a second receiving cavity for accommodating a gear set. The upper cover is used to connect with the opening of the lower shell. A gear set, comprising an output gear, a second gear, and a third gear, wherein the second gear and the third gear respectively include a sector-shaped transmission gear and a shaft-shaped transmission gear arranged coaxially, the output gear meshing with the shaft-shaped transmission gear of the second gear, the sector-shaped transmission gear of the second gear meshing with the shaft-shaped transmission gear of the third gear, the sector-shaped transmission gear of the second gear being located at the bottom of the output gear and the third gear, and the clearance portion being used to avoid the top of the second gear and to avoid the rotation path of the second gear; A drive module is placed in the first receiving cavity, and the drive module's rotating shaft is engaged with the sector transmission gear of the third gear.

2. The actuator according to claim 1, characterized in that, The shaft-shaped transmission gear of the second gear component has a guide surface on the side away from the sector-shaped transmission gear, which is used to guide the output gear component and the third gear component to be inserted and meshed with the second gear component along the axial direction of the second gear component.

3. The actuator according to claim 2, characterized in that, It also includes a PCB board, which is placed inside the receiving cavity; The output gear component includes a magnetic gear bushing and a sector gear shaft housed at the center of the magnetic gear bushing, as well as a magnetic component housed at the bottom of the magnetic gear bushing. The sector gear shaft is rotatably connected to the upper cover. One end extends out from the outside of the upper cover for driving, and the end face of the other end is spaced apart from the PCB board and concentrically arranged with the Hall element on the PCB board.

4. The actuator according to claim 3, characterized in that, The diameter of the magnetic component is smaller than the shaft diameter of the magnetic gear bushing, and the magnetic component is embedded in the shaft portion of the magnetic gear bushing.

5. The actuator according to claim 3, characterized in that, The lower shell has a limiting post and a limiting terminal formed at the location corresponding to the PCB board. The limiting terminal is used to be inserted into the hole of the PCB board and elastically abut against the hole wall. The limiting post is used to be riveted through the corresponding hole of the PCB board after the limiting terminal and the PCB board are inserted.

6. The actuator according to claim 3, characterized in that, The sector shaft and the upper cover are connected by a rotating assembly. A connecting cavity is formed on the upper cover. The rotating assembly includes a bushing and a bearing. The bushing abuts against the bottom of the bearing and is located near the inner side of the upper cover.

7. The actuator according to claim 6, characterized in that, A limiting portion is formed on the outer side of the upper cover corresponding to the port of the connecting cavity, and / or on the inner side corresponding to the port of the connecting cavity, to prevent the rotating assembly from moving along the axial direction of the sector gear shaft.

8. The actuator according to claim 1, characterized in that, A heat dissipation pattern is formed on the outer side of the lower shell corresponding to the first receiving cavity, and the heat dissipation pattern is raised from the outer surface of the lower shell; The lower shell includes a main body, an end cap, and an elastic element. The end cap is sealed to the main body at the location corresponding to the first receiving cavity. The inner side of the end cap abuts against the bottom of the drive module through the elastic element, so that the rotating shaft of the drive module extends toward the gear set.

9. The actuator according to claim 1, characterized in that, The upper cover and / or lower cover have vent holes and a breathable and waterproof membrane layer covering the vent holes and located inside the receiving cavity.

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