Actuator for air outlet of automobile air conditioner

Abstract

The utility model discloses an automobile air conditioner air outlet actuator which comprises an execution bin, an installation cavity is formed in the execution bin, a direct-current brushless motor is fixed in the installation cavity, a first output shaft is arranged at the driving end of the direct-current brushless motor, a driving gear is assembled on the first output shaft, and the first output shaft is provided with a second output shaft. A mounting cavity is formed in the execution bin, a driving gear is arranged in the mounting cavity, one side of the driving gear is meshed with a gear assembly, the gear assembly is arranged in the mounting cavity, a shell is further arranged in the execution bin, a rotor assembly is arranged in the shell, and the rotor assembly and the first output shaft are integrated. The rotor and the shaft of the miniature brushless motor are integrated, so that the rotation stability of the rotor is improved, and the abnormal knocking sound is eliminated.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle-mounted electronic actuators, and more specifically, particularly relates to an automobile air-conditioning air outlet actuator. Background Art

[0002] At present, most automotive air-conditioning outlet actuators directly borrow the damper actuator;

[0003] It adopts stepper motor output and four-stage gear reduction.

[0004] The Chinese patent with the authorization announcement number CN220053448U discloses an electronic actuator for automobile air-conditioning outlets, including: an assembly compartment; also including: a DC brushless motor, arranged in a storage chamber, an output shaft is provided at the output end of the DC brushless motor, and an output gear is sleeved on the output shaft; a three-stage reduction gear set is arranged in the storage chamber and meshes with the output gear. The utility model changes the stepper motor into a DC brushless motor without changing the overall size of the actuator, and reduces a gear of one stage, changing it into a three-stage gear transmission, thereby effectively reducing the output speed and torque of the motor, making the actuator run more smoothly and with less noise; thereby avoiding the problem of relatively fast output speed and large noise and vibration when using a traditional stepper motor; at the same time, avoiding the situation where the output torque far exceeds the torque required to rotate the air outlet fan blades by using the original four-stage gear reduction, thereby avoiding the situation where there is a very obvious impact sound when switching, and even damaging the fan blades.

[0005] Although the above patent reduces torque and improves commutation stability and safety, the DC brushless actuators used for automobile air-conditioning outlets on the market all adopt a design scheme of gear and shaft clearance assembly. This type of actuator will cause the rotor to collide with the shaft on which it is assembled due to unbalanced rotor rotation. After long-term use, obvious knocking noises will be generated as the grease evaporates. In the above patent, the output shaft is connected to the rotor assembly and adopts a split design, which has poor transmission stability. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an automobile air-conditioning air outlet actuator to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: an automobile air-conditioning outlet actuator, including an actuator compartment, an installation cavity is provided in the actuator compartment, a DC brushless motor is fixed in the installation cavity, a first output shaft is provided at the driving end of the DC brushless motor, a driving gear is assembled on the first output shaft, a gear assembly is meshed on one side of the driving gear, the gear assembly is arranged in the installation cavity, the actuator compartment also includes a shell, a rotor assembly is provided in the shell, and the rotor assembly is integrated with the first output shaft.

[0008] Positioning and mounting holes are arranged around the shell body, and an upper cover is adapted to be mounted and fixed quickly through the positioning and mounting holes.

[0009] The rotor assembly includes a rotor assembly, a positioning assembly is arranged inside the rotor assembly, and the first output shaft, the rotor assembly and the stator assembly are designed in an integrated manner.

[0010] The gear assembly comprises: a primary gear shaft,

[0011] The primary gear shaft is installed in the housing, and the primary gear shaft is equipped with a primary main gear meshing with the driving gear, and a primary auxiliary gear sleeved on the primary gear shaft and located below the primary main gear;

[0012] An output gear is meshed on one side of the primary auxiliary gear, and the output gear is mounted on a second output shaft in the housing, and a secondary auxiliary gear is also mounted on the second output shaft and is located below the output gear;

[0013] One side of the secondary auxiliary gear is meshed with a third-stage main gear, and the third-stage main gear is assembled on a third-stage gear shaft in the housing.

[0014] A circuit board is also arranged in the shell for overall drive control.

[0015] The utility model provides an automobile air-conditioning outlet actuator, which has the following beneficial effects:

[0016] The first output shaft is driven to rotate by a brushless DC motor, which in turn drives the driving gear to rotate, which in turn drives the primary main gear and the primary auxiliary gear to rotate, and then the primary auxiliary gear drives the output gear to rotate, which in turn drives the secondary auxiliary gear to rotate, and then the secondary auxiliary gear drives the third main gear to rotate, and then the third main gear completes the output work. The first output shaft, the rotor assembly and the stator assembly are integrated into a whole, eliminating the previous split design, which can better ensure the stability of the motor rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural sectional view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the first output shaft and the rotor assembly of the utility model.

[0020] In the figure: 1, circuit board; 2, first output shaft; 201, driving gear; 3, rotor assembly; 4, first-stage main gear; 5, second output shaft; 6, output gear; 7, upper cover; 8, housing; 801, positioning mounting hole; 9, stator assembly; 10, third-stage main gear. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] See also Figures 1 to 3 The utility model provides a technical solution: an automobile air-conditioning outlet actuator, including an execution chamber, a mounting cavity is arranged in the execution chamber, a DC brushless motor is fixed in the mounting cavity, a first output shaft 2 is arranged at the driving end of the DC brushless motor, a driving gear 201 is assembled on the first output shaft 2, a gear assembly is meshed on one side of the driving gear 201, and the gear assembly is arranged in the mounting cavity, the execution chamber also includes a shell 8, positioning mounting holes 801 are arranged on all sides of the shell 8, an upper cover 7 is adapted on the shell 8, and the positioning mounting holes 801 are used for quick installation and fixation, a rotor assembly 3 is arranged in the shell 8, the rotor assembly 3 includes a rotor assembly, a positioning assembly is arranged in the rotor assembly, the first output shaft 2, the rotor assembly and the stator assembly 9 are designed in an integrated manner to make them a whole, cancel the previous split design, and better ensure the stability of the motor rotation.

[0025] Without changing the overall size of the actuator, the stepper motor is replaced with a brushless DC motor, and one gear is reduced to a three-stage gear transmission, which effectively reduces the output speed and torque of the motor, making the actuator run more smoothly and with less noise; improving the stability of the rotor rotation and eliminating abnormal knocking noises.

[0026] This avoids the problem of faster output speed, loud noise and vibration when using traditional stepper motors;

[0027] At the same time, it avoids the use of the original four-stage gear reduction, and the output torque far exceeds the torque required to rotate the air outlet fan blades, thereby avoiding obvious impact sounds when switching, and even damaging the fan blades.

[0028] The gear assembly comprises:

[0029] A primary gear shaft, the primary gear shaft is installed in the housing 8, the primary gear shaft is equipped with a primary main gear 4 meshing with the driving gear 201, and a primary auxiliary gear sleeved on the primary gear shaft and located below the primary main gear 4;

[0030] An output gear 6 is meshed on one side of the primary auxiliary gear, and the output gear 6 is mounted on a second output shaft 5 in a housing 8. A secondary auxiliary gear is also mounted on the second output shaft 5 and is located below the output gear 6.

[0031] One side of the secondary auxiliary gear is meshed with a third-stage main gear 10 , and the third-stage main gear 10 is assembled on a third-stage gear shaft in the housing 8 .

[0032] A circuit board 1 is also disposed in the housing 8 for overall drive control.

[0033] The gears in the gear assembly are all spur gears, which can better ensure the accuracy and consistency of parts.

[0034] The specific usage and function of this embodiment are as follows: the first output shaft 2 is driven to rotate by a brushless DC motor, which in turn drives the driving gear 201 to rotate, which in turn drives the primary main gear 4 and the primary auxiliary gear to rotate, and then the primary auxiliary gear drives the output gear 6 to rotate, which in turn drives the secondary auxiliary gear to rotate, and then the secondary auxiliary gear drives the tertiary main gear 10 to rotate, and then the output work is completed by the tertiary main gear 10. The first output shaft 2, the rotor assembly and the stator assembly 9 are designed as an integrated whole, eliminating the previous split design, which can better ensure the stability of the motor rotation.

[0035] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An automobile air-conditioning outlet actuator, comprising an actuator compartment, characterized in that: The execution chamber is provided with an installation cavity, a brushless DC motor is fixed in the installation cavity, a first output shaft (2) is provided at a driving end of the brushless DC motor, a driving gear (201) is mounted on the first output shaft (2), a gear assembly is meshed on one side of the driving gear (201), and the gear assembly is arranged in the installation cavity. The execution chamber also includes a housing (8), a rotor assembly (3) is arranged in the housing (8), and the rotor assembly (3) is integrated with the first output shaft (2).

2. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: Positioning and mounting holes (801) are arranged on all four sides of the shell (8), and an upper cover (7) is adapted to be mounted and fixed quickly via the positioning and mounting holes (801).

3. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: The rotor assembly (3) comprises a rotor assembly, a positioning assembly is arranged inside the rotor assembly, and the first output shaft (2) and the rotor assembly and the stator assembly (9) are of an integrated design.

4. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: The gear assembly comprises: a primary gear shaft, The primary gear shaft is installed in a housing (8), and the primary gear shaft is equipped with a primary main gear (4) meshing with the driving gear (201), and a primary auxiliary gear sleeved on the primary gear shaft and located below the primary main gear (4); An output gear (6) is meshed with one side of the primary auxiliary gear, and the output gear (6) is mounted on a second output shaft (5) in the housing (8). A secondary auxiliary gear is also mounted on the second output shaft (5) and is located below the output gear (6); A third-stage main gear (10) is meshed with one side of the second-stage auxiliary gear, and the third-stage main gear (10) is mounted on a third-stage gear shaft in the housing (8).

5. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: A circuit board (1) is also provided in the housing (8) for overall drive control.

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