An actuator for an air outlet of a motor vehicle

Abstract

An actuator for an air outlet of a motor vehicle, comprising a housing including an upper housing, a lower housing, and a cavity; a motor arranged vertically in the cavity, the motor comprising a stator assembly and a rotor assembly separable from the stator assembly, the rotor assembly including a rotary shaft, two mounting grooves being arranged at a position of the upper housing and the lower housing respectively corresponding to the upper and lower ends of the rotary shaft, the two ends of the rotary shaft and the two mounting grooves cooperating to support the rotary shaft.

Description

Technical FieldThe present invention relates to the technical field of motor vehicle parts, in particular to an actuator for an air outlet of a motor vehicle.Prior ArtWith the innovative development of the automotive industry, in particular the rapid development of new energy, unmanned and other technologies, automotive electronics can be used on a large scale and has become an important component of the motor vehicle, the performance of which directly affects the dynamics, economics, reliability, safety and comfort of the motor vehicle. The operating principle of the actuator for the air outlet of the air conditioner of the motor vehicle is as follows: The micromotor rotates at high speed after being supplied with power, slows down through the transmission system and is finally output through the output gear at a certain torque and a certain rotational speed, and then pushes the associated air flap through a connecting rod to achieve the switching and angular conversion of the air flap of the air conditioner of a vehicle.In an optional embodiment, a drive motor of an actuator for the air conditioning door of a motor vehicle is horizontally inserted in an outer housing, and the drive motor is connected to a control circuit on a printed circuit board via a motor line. In addition, the circuit board has four tabs as wiring pins. Since the drive motor is mounted horizontally, it is difficult to decrease the overall volume of the actuator; moreover, the circuit board is also horizontally distributed in its entirety in the outer housing, and the circuit board must be adapted to the positioning and mounting of the gears, which on the one hand leads to the overall volume of the circuit board becoming larger and the costs increasing; on the other hand, the circuit board and the gears need to be only gradually motivated when being installed in the outer housing, making the entire mounting process cumbersome; on the other hand, the restriction of the position after mounting is more difficult to design than in the vertical mounting method in the horizontally mounted circuit boards.SUMMARY OF THE INVENTIONIn an embodiment of the present application, there is provided an actuator for an air outlet of an automobile, wherein the engine is vertically disposed in a cavity of the housing, and the mounting grooves on the upper and lower housings are conveniently used to support the upper and lower ends of the rotary shaft, so that this construction makes the overall structure of the actuator more compact.To achieve the above object, the utility model provides the following technical solution: an actuator for an air outlet of a motor vehicle includes a housing including an upper housing, a lower housing, and a cavity; a motor vertically disposed in the cavity, the motor including a stator assembly and a rotor assembly separable from the stator assembly, the rotor assembly including a rotation shaft, wherein two mounting grooves are respectively disposed at a location of the upper housing and the lower housing associated with the upper and lower ends of the rotation shaft. The two ends of the rotary shaft and the two mounting grooves cooperate to support the rotary shaft.Compared to the prior art, the advantages of the present invention are:By vertically disposing the motor in the cavity of the housing and conveniently using the mounting grooves on the upper and lower housings to support the upper and lower ends of the rotary shaft, this construction makes the overall structure of the actuator more compact with the both ends of the rotary shaft securely mounted in the upper and lower housings in the mounting grooves. This construction increases the stability of the rotary shaft, and the rotary shaft can rotate smoothly during the operation of the actuator, thereby reducing noise and wear due to vibration or shaking, thereby prolonging the life of the actuator.Due to the relatively independent construction of the stator assembly and rotor assembly and the fact that the rotating shaft part of the rotor assembly is supported by the mounting groove, it is relatively easy to disassemble and mount the motor assembly when it needs to be serviced or replaced, which not only reduces maintenance costs but also improves maintenance efficiency.According to an improvement, the upper and lower ends of the rotary shaft are formed in a spherical shape, and the rotary shaft directly cooperates with the two mounting grooves by means of the spherical structure to support the rotation of the rotary shaft in the circumferential direction. By the ball structure, the force generated from the rotating shaft during the rotation can be distributed evenly and a stable support can be provided. This prevents the rotary shaft from wobbling or shifting during the rotation at a high speed, ensuring stable operation of the actuator.According to an improvement, two bearings are respectively embedded in the mounting grooves, the rotary shaft cooperates with the two mounting grooves through the ball structures at the two ends and the two bearings to support the rotation of the rotary shaft in a circumferential direction. The bearings as the key component of the machine can significantly reduce friction between the rotation shaft and the mounting groove. By matching the ball structure to the bearings, the rotating shaft can rotate smoothly, reducing energy losses and wear.According to an improvement, a bearing is embedded in the mounting groove of the lower housing. The rotary shaft cooperates with the mounting groove through the ball structure at the end and the bearing to support the rotation of the rotary shaft in a circumferential direction. The ball structure and the bearings can withstand larger radial and axial loads as well as a certain amount of impacts and vibrations, whereby the rotary shaft maintains a stable rotation even under complex working conditions, so that the reliability and stability of the plant are improved.According to an improvement, a spring sheet is mounted between the stator assembly and the housing, one end of the bearing is embedded in the mounting groove of the lower housing and the other end of the bearing is positioned by the spring sheet. The spring sheet can accurately locate the other end of the bearing to ensure that the bearing is accurately positioned in the mounting groove, thereby avoiding rotational errors and vibrations caused by improper positioning; the spring sheet has a certain degree of elastic damping effect, by which the stress generated by the bearing in the rotation process can uniformly distribute, thereby avoiding local overload and damage and improving structural stability and load bearing capacity.According to an improvement, the housing is designed such that the stator arrangement is mounted and delimited by a delimiting seat formed in one piece in the lower housing. Positioning and mounting of the stator assembly is facilitated by the provision of limit seats.According to an improvement, the limiting seat is configured such that circumferential limitation of the stator arrangement is effected by a number of limiting projections which are integrally arranged on the inner circumferential wall. The limiting projections and a circumferential limitation of the stator arrangement thus ensure a stable position of the stator arrangement in the limiting seat and thus prevent detachment or displacement due to vibrations or external forces.According to an improvement, the actuator further comprises a transmission assembly having a second gear and a gear shaft. The second gear is coaxially connected to an upper end of the gear shaft. A positioning plate is disposed between the second gear and the motor. The positioning plate is provided with a shaft mounting groove in association with the gear shaft. The lower end of the gear shaft is embedded in the interior of the shaft mounting groove, whereby the second gear is rotatably connected to the positioning plate, and the lower end of the positioning plate is connected to the upper end of the side wall of the limiting seat. The construction of the positioning plate provides a stable support point for the second gear and the gear shaft so that the entire gear assembly obtains a high degree of stability during assembly and use, and effective power transmission is achieved by the coaxial connection between the second gear and the gear shaft and the close fit between the gear shaft and the mounting groove of the shaft body, power transmission loss is reduced and power transmission efficiency is improved. At the same time, the construction of the positioning plate facilitates the installation of the gear arrangement without complicated positioning and fastening steps, so that the installation difficulties and costs are reduced.According to an improvement, the gear assembly further comprises a first gear coaxially pressed onto the upper end of the rotating shaft. The positioning plate is provided with a mounting through hole in correspondence with the first gear. The first gear passes through the mounting through hole and engages with the second gear. The coaxial connection of the first gear to the upper end of the rotary shaft and the second gear to the gear shaft makes the entire gear assembly more compact, which effectively utilizes the space inside the actuator.According to an improvement, the motor further comprises a number of motor pins arranged on one side of the stator assembly. The actuator further includes a vertically disposed circuit board and a number of pins disposed on one side of the circuit board. The stator assembly is disposed on the other side of the circuit board, with the motor pins and the pins each inserted into the circuit board and soldered to the circuit board. Soldering the motor pins to the circuit board and the pins to the circuit board simplifies the installation process and ensures stable transmission of the electrical signals, so that malfunctions due to poor or loose contacts are avoided.Brief Description of the FiguresIn the following, the figures and the embodiments for the present use nutr are explained in more detail: FIG. 1 : shows a structural exploded illustration of an actuator for an air outlet of a motor vehicle; FIG. 2 : shows a structural sectional illustration of an actuator for an air outlet of a motor vehicle in an exemplary embodiment 1; FIG. 3 : shows a structural sectional illustration of an actuator for an air outlet of a motor vehicle in an exemplary embodiment 2; FIG. 4 : shows a structural sectional illustration of an actuator for an air outlet of a motor vehicle in an exemplary embodiment 3; FIG. 5 is a schematic illustration of structural coordination of the positioning plate, gear shaft, first and second gears;Detailed Description of EmbodimentsIt is understood in the present invention that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "plane direction", "circumferential direction", etc. are used with reference to the illustrated directional or positional relationship in the respective drawings, respectively, to describe only the invention and facilitate the description, as appropriate. In other words, these terms are used to indicate neither the positioning nor the explicit positioning, and the configuration and operation of the device or element in question in a predetermined positioning, and therefore there is no restriction of the present utility model here.Embodiment 1:As shown in FIGS. 1, 2 and 5, an actuator for an air outlet of a motor vehicle comprises a housing 1 and a motor 2, the housing 1 comprises an upper housing 1.1, a lower housing 1.2 and a cavity 1.3, the motor 2 being arranged vertically in the cavity 1.3, the motor 2 comprising a stator assembly 2.1 and a rotor assembly 2.2 separable from the stator assembly 2.1, the rotor assembly 2.2 comprising a rotary shaft 2.2.1, two mounting grooves 1.4 being arranged respectively at a location of the upper housing 1.1 and the lower housing 1.2 associated with the upper and lower ends of the rotary shaft 2.1. The two ends of the rotary shaft 2.2.1 and the two mounting grooves 1.4 cooperate to support the rotary shaft 2.2.1.The upper and lower ends of the rotating shaft 2.2.1 are formed in a spherical shape, and the rotating shaft 2.2.1 directly cooperates with the two mounting grooves 1.4 by means of the spherical structure to support the rotation of the rotating shaft 2.2.1 in the circumferential direction.The housing 1 serves for mounting and delimiting the stator arrangement 2.1 by a delimiting seat 1.2.1 formed integrally in the lower housing 1.2.The limiting seat 1.2.1 serves to circumferentially limit the stator assembly 2.1 by a number of limiting protrusions 1.2.1.1 integrally arranged on the inner circumferential wall. The limiting projections 1.2.1.1 are preferably limiting ribs provided in the vertical direction.The actuator also comprises a gear arrangement 5 with a second gearwheel 5.1 and a gearwheel shaft 5.2. The second gear 5.1 is coaxially connected to an upper end of the gear shaft 5.2. A positioning plate 6 is disposed between the second gear 5.1 and the motor 2. The positioning plate 6 is provided with a shaft mounting groove 6.1 in association with the gear shaft 5.2. The lower end of the gear shaft 5.2 is embedded in the interior of the shaft mounting groove 6.1, whereby the second gear 5.1 is rotatably connected to the positioning plate 6, the lower end of the positioning plate 6 being connected to the upper end of the side wall of the restriction seat 1.2.1.The gear arrangement 5 further comprises a first gear 5.3 which is coaxially pressed onto the upper end of the rotary shaft 2.2.1. The positioning plate 6 is provided with a mounting through hole 6.2 in correspondence with the first gear 5.3. The first gear 5.3 passes through the mounting through hole 6.2 and engages with the second gear 5.1.The motor 2 also comprises a number of motor pins 2.3 arranged on one side of the stator assembly 2.1. The actuator also comprises a vertically arranged circuit board 7 and a number of pins 8 arranged on one side of the circuit board 7. The stator assembly 2.1 is arranged on the other side of the circuit board 7, wherein the motor pins 2.3 and the pins 8 are inserted into the circuit board 7 and soldered to the circuit board 7.The transmission assembly 5 also comprises a third gear engaging the second gear 5.1, a fourth gear engaging the third gear and a fifth gear engaging the fourth gear.The first gear 5.3 is pressed onto the upper end of the rotary shaft 2.2.1. The lower end of the gear shaft 5.2 of the second gear 5.1 is press-fitted into the inside of the shaft mounting groove 6.1. The pins 8 are inserted into one side of the vertically disposed circuit board 7 and soldered to the circuit board 7. The motor pins 2.3 are inserted into the other side of the printed circuit board 7 and soldered to the printed circuit board 7, so that the printed circuit board 7 is firmly connected to the stator arrangement 2.1 via the motor pin 2.3. The stator assembly 2.1 with the circuit board 7 soldered thereto is perpendicularly installed inside the restriction seat 1.2.1, and the lower end of the rotating shaft 2.2.1 directly cooperates with the mounting groove 1.4 through the ball structure to support the rotation of the lower end of the rotating shaft 2.2.1 in the circumferential direction. The rotor arrangement 2.2 is mounted inside the stator arrangement 2.1. The gear shafts of the third and fourth gears are press-fitted into the inside of the lower case. The lower end of the positioning plate 6 of the gear shaft 5.2 of the press-fitted second gear 5.1 is connected to the upper end of the side wall of the limiting seat 1.2.1. The second gear 5.1 is disposed at the upper end of the positioning plate 6, and the second gear 5.1 is coaxially connected to the upper end of the gear shaft 5.2 so that the second gear 5.1 is rotatably connected to the positioning plate 6. The first gear 5.3 passes through the mounting through hole 6.2 to engage with the second gear 5.1. The third gear is mounted on the upper end of the gear shaft of the third gear and meshes with the second gear. The fourth gear is mounted on the upper end of the gear shaft of the fourth gear and meshes with the third gear. The fifth gear is mounted inside the lower housing 1.2 and meshes with the fourth gear. The upper housing 1.1 is mounted so that the upper end of the rotary shaft 2.2.1 directly cooperates with the mounting groove 1.4 through the ball structure to support the rotation of the upper end of the rotary shaft 2.2.1 in the circumferential direction. The upper housing 1.1 and the lower housing 1.2 are snap-connected to each other.Embodiment 2:As shown in Fig. 3, the rotary shaft 2.2.1 is circumferentially loaded by the ball structures at both ends and two bearings 3 in cooperation with two mounting grooves 1.4 for the rotation of the rotary shaft 2.2.1.The other configuration is the same as in Embodiment 1 and therefore will not be repeated here.After the printed circuit board 7 is firmly connected to the stator arrangement 2.1 via the motor pin 2.3, one end of the two bearings 3 is respectively embedded in the interior of the two mounting grooves 1.4. The stator assembly 2.1 of the soldered circuit board 7 is vertically installed inside the restriction seat 1.2.1, and the lower end of the rotating shaft 2.2.1 cooperates with the mounting grooves 1.4 via the ball structure and the bearings 3 to support the rotation of the lower end of the rotating shaft 2.2.1 in a circumferential direction. After the fifth gear is installed inside the lower housing 1.2 and meshes with the fourth gear, the upper housing 1.1 is installed such that the upper end of the rotary shaft 2.2.1 cooperates with the mounting groove 1.4 through the ball structure and the bearing 3 to support the rotation of the upper end of the rotary shaft 2.2.1 in a circumferential direction. The remaining assembling steps are the same as the assembling steps in Embodiment 1 and will not be repeated here.Embodiment 3:As shown in FIGS. 1, 4 and 5, a bearing 3 is embedded in the mounting groove 1.4 of the lower housing 1.2. The rotary shaft 2.2.1 cooperates with the mounting groove 1.4 through the ball structure at the end and the bearing 3 to support the rotation of the rotary shaft 2.2.1 in a circumferential direction. Preferably, the bearing 3 may be installed only inside the mounting groove 1.4 of the lower housing 1.2 so that the lower end of the rotating shaft 2.2.1 cooperates with the mounting groove 1.4 through the ball structure and the bearing 3 positioned by the spring sheet 4 to support the rotation of the lower end of the rotating shaft 2.2.1 in the circumferential direction. The upper end of the rotary shaft 2.2.1 directly cooperates with the mounting groove 1.4 via the ball structure to support the rotation of the upper end of the rotary shaft 2.2.1 in the circumferential direction. Alternatively, the bearing 3 may be embedded in the mounting grooves of the upper and lower housings simultaneously so that the upper and lower ends of the rotary shaft 2.2.1 cooperate with the mounting grooves 1.4 via the ball structure and the bearing 3 positioned by the spring sheet 4 to support the rotation of the lower end of the rotary shaft 2.2.1 in the circumferential direction.A spring plate 4 is mounted between the stator assembly 2.1 and the housing 1, one end of the bearing 3 is embedded in the mounting groove 1.4 of the lower housing 1.2 and the other end of the bearing 3 is positioned by the spring plate 4.The remaining structure is the same as in Embodiment 1 and therefore will not be repeated here.After the circuit board 7 is firmly connected to the stator assembly 2.1 by the motor pin 2.3, the spring sheet 4 is attached to one end of the mounting groove 1.4 so that one end of the bearing 3 is embedded in the interior of the mounting groove 1.4 positioned by the spring sheet 4. The stator assembly 2.1 of the soldered circuit board 7 is vertically installed inside the restriction seat 1.2.1, and the lower end of the rotating shaft 2.2.1 cooperates with the mounting groove 1.4 through the ball structure and the bearing 3 to support the rotation of the lower end of the rotating shaft 2.2.1 in the circumferential direction.After the fifth gear is mounted inside the lower housing 1.2 and meshes with the fourth gear, the upper housing 1.1 is mounted so that the upper end of the rotary shaft 2.2.1 directly cooperates with the mounting groove 1.4 through the ball structure or cooperates with the mounting groove 1.4 through the ball structure and the bearing 3 to support the rotation of the upper end of the rotary shaft 2.2.1 in the circumferential direction. The remaining assembly steps correspond to the assembly steps in Embodiment 1 and are therefore not repeated here.The present utility model is described above by way of example with reference to the figures. Of course, the practical new mode of specific reaction is not limited to the above form. As long as it is a use of the technical solutions of the present invention for a variety of non-essential improvements or the idea and the technical solutions of the present invention are directly applied to other occasions without improvement, it falls within the scope of the invention.List of reference characters1 Housing 1.1 Upper housing 1.2 Lower housing 1.2.1 Limiting seat 1.2.1.1 Limiting protrusion 1.3 Cavity 1.4 Mounting groove 2 Motor 2.1 Stator assembly 2.2 Rotor assembly 2.2.1 Rotation shaft 2.3 Motor pin 3 Bearing 4 Spring plate 5 Gear assembly 5.1 Second gear 5.2 Gear shaft 5.3 First gear 6 Positioning plate 6.1 Shaft mounting groove 6.2 Mounting through hole 7 Circuit board 8 Pin

Claims

An actuator for an air outlet of a motor vehicle, comprising a housing comprising an upper housing, a lower housing and a cavity; a motor vertically disposed in the cavity, the motor comprising a stator assembly and a rotor assembly separable from the stator assembly, the rotor assembly comprising a rotation shaft, wherein two mounting grooves are respectively disposed at a location of the upper housing and the lower housing associated with the upper and lower ends of the rotation shaft, wherein the two ends of the rotation shaft and the two mounting grooves cooperate to support the rotation shaft.An actuator for an air outlet of an automobile according to claim 1, characterized in that the upper and lower ends of the rotary shaft are formed in a spherical shape, the rotary shaft directly cooperating with the two mounting grooves by means of the spherical structure to support the rotation of the rotary shaft in the circumferential direction.An actuator for an air outlet of a motor vehicle according to claim 1, characterized in that two bearings are respectively embedded in the mounting grooves, the rotary shaft cooperates with the two mounting grooves through the ball structures at the two ends and the two bearings to support the rotation of the rotary shaft in a circumferential direction.An actuator for an air outlet of an automobile according to claim 1, characterized in that a bearing is embedded in the mounting groove of the lower housing, the rotary shaft cooperating with the mounting groove through the ball structure at the end and the bearing to support the rotation of the rotary shaft in a circumferential direction.An actuator for an air outlet of a motor vehicle according to claim 4, characterized in that a spring sheet is mounted between the stator assembly and the housing, one end of the bearing is embedded in the mounting groove of the lower housing, and the other end of the bearing is positioned by the spring sheet.An actuator for an air outlet of a motor vehicle according to claim 1, characterised in that the housing is formed, in that the stator arrangement is mounted and delimited by a delimiting seat formed in one piece in the lower housing.An actuator for an air outlet of a motor vehicle according to claim 6, characterized in that the restriction seat is formed in that circumferential restriction of the stator assembly is effected by a number of restriction protrusions integrally arranged on the inner circumferential wall.An actuator for an air outlet of a motor vehicle according to claim 1, characterized in that the actuator further comprises a gear assembly having a second gear and a gear shaft, the second gear being coaxially connected to an upper end of the gear shaft, a positioning plate being disposed between the second gear and the motor, the positioning plate being provided with a shaft mounting groove in correspondence with the gear shaft, the lower end of the gear shaft being embedded in the interior of the shaft mounting groove, whereby the second gear is rotatably connected to the positioning plate, the lower end of the positioning plate being connected to the upper end of the side wall of the limiting seat.An actuator for an air outlet of a motor vehicle according to claim 8, characterized in that the transmission assembly further comprises a first gear coaxially pressed on the upper end of the rotary shaft, the positioning plate being provided with a mounting through hole in correspondence with the first gear, the first gear passing through the mounting through hole and engaging with the second gear.An actuator for an air outlet of a motor vehicle according to claim 1, characterized in that the motor further comprises a number of motor pins arranged on one side of the stator assembly, the actuator further comprising a vertically arranged circuit board and a number of pins arranged on one side of the circuit board, the stator assembly being arranged on the other side of the circuit board, the motor pins and the pins being inserted into the circuit board and soldered to the circuit board, respectively.

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