Actuator for air outlet of automobile air conditioner

Abstract

The utility model discloses an automobile air conditioner air outlet actuator which comprises a shell, a mounting bin is arranged in the shell, a direct-current brushless motor is fixed in the mounting bin, a first output shaft is arranged at the driving end of the direct-current brushless motor, an adapter gear is assembled on the first output shaft, one side of the adapter gear is meshed with a gear sleeve, and the other side of the adapter gear is meshed with a second output shaft. The gear kit is arranged in the mounting bin, a rotor assembly is arranged in the brushless direct current motor, the rotor assembly is assembled and connected with the first output shaft, a stator assembly is further arranged outside the rotor assembly in a matched mode, a spring is installed on the top of a switching gear of the first output shaft, and the switching gear is positioned and pressed through the upper cover. The rotor is pressed in the axial direction through the spring, so that the rotor runs more stably, knocking abnormal sound is eliminated, and meanwhile the friction force between the rotor and the shell can be increased, so that the self-locking torque of the actuator is increased.

Description

Technical Field

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

[0002] At present, the DC brushless actuators used for automobile air-conditioning outlets on the market all adopt spur gear transmission, and the gears and shafts are designed with clearance fit.

[0003] 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.

[0004] Although the above patent reduces torque and improves switching stability and safety, this type of actuator will cause the rotor to collide with the shaft on which it is assembled due to unbalanced rotation of the rotor. After long-term use, obvious knocking noises will be generated as the grease evaporates, seriously affecting the overall service life and performance. Utility Model Content

[0005] 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.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: an automobile air-conditioning outlet actuator, including a shell, a mounting compartment is arranged in the shell, a DC brushless motor is fixed in the mounting compartment, a first output shaft is arranged at the driving end of the DC brushless motor, a transfer gear is assembled on the first output shaft, a gear kit is meshed on one side of the transfer gear, and the gear kit is arranged in the mounting compartment, a rotor assembly is arranged in the DC brushless motor, the rotor assembly is assembled and connected to the first output shaft, a stator assembly is also matched outside the rotor assembly, a spring is installed on the top of the transfer gear of the first output shaft, and is positioned and pressed by an upper cover.

[0007] As an optional solution of the utility model, a circuit board is installed on the shell to control the overall driving operation.

[0008] As an optional solution of the utility model, the gear kit includes: a primary gear shaft,

[0009] The primary gear shaft is installed in the housing, and the primary gear shaft is equipped with a primary main gear meshing with the transfer gear, and a primary auxiliary gear is installed on the primary gear shaft and located below the primary main gear;

[0010] 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;

[0011] One side of the secondary auxiliary gear is meshed with a third-stage main gear, and the third-stage main gear is located below the output gear and is assembled on a third-stage gear shaft in the housing.

[0012] As an optional solution of the utility model, assembly holes are arranged on all sides of the shell, an upper cover is adapted to be provided on the shell, and is fixed by bolts through the assembly holes.

[0013] As an optional solution of the utility model, the spring is in an inverted cone shape as a whole and is made of 60Si2MnA material.

[0014] The utility model provides an automobile air-conditioning air outlet actuator, which has the following beneficial effects:

[0015] Without changing the overall structure of the actuator, the rotor is pressed axially by a spring, which makes the rotor run more smoothly and eliminates abnormal knocking noise. At the same time, the friction between the rotor and the housing is increased to increase the self-locking torque of the actuator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] In the figure: 1, circuit board; 2, spring; 3, first output shaft; 4, first-stage main gear; 5, third-stage main gear; 6, output gear; 7, upper cover; 8, housing; 801, assembly hole; 9, stator assembly; 10, rotor assembly; 11, second output shaft. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] 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.

[0021] 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.

[0022] See also Figure 1 to Figure 2 The utility model provides a technical solution: an automobile air-conditioning outlet actuator, comprising a shell 8, a mounting compartment is arranged in the shell 8, a DC brushless motor is fixed in the mounting compartment, a first output shaft 3 is arranged at the driving end of the DC brushless motor, a transfer gear is mounted on the first output shaft 3, a gear kit is meshed with one side of the transfer gear, and the gear kit is arranged in the mounting compartment.

[0023] The DC brushless motor is provided with a rotor assembly 10, which is assembled and connected to the first output shaft 3. The rotor assembly 10 is also equipped with a stator assembly 9. A circuit board 1 is installed on the housing 8 to control the overall driving operation. The circuit board 1, the stator assembly 9, the rotor assembly 10 and the first output shaft 3 form a complete DC brushless motor.

[0024] The shell 8 is provided with assembly holes 801 on all sides, and the shell 8 is adapted with an upper cover 7 and is fixed with bolts through the assembly holes 801. A spring 2 is installed on the top of the transfer gear of the first output shaft 3 and is positioned and pressed by the upper cover 7. The spring 2 is in an inverted cone shape as a whole and is made of 60Si2MnA material. The strength, elasticity and hardenability all reach excellent performance, thereby better ensuring the stability of the motor rotation and increasing the self-locking torque of the actuator, and also solving the problem of abnormal impact noise caused by unbalanced rotor rotation.

[0025] The gear kit comprises: a primary gear shaft,

[0026] The primary gear shaft is installed in the housing 8, and the primary gear shaft is equipped with a primary main gear 4 meshing with the transfer gear, and a primary auxiliary gear assembled on the primary gear shaft and located below the primary main gear 4;

[0027] 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 11 in the housing 8. A secondary auxiliary gear is also mounted on the second output shaft 11 and is located below the output gear 6.

[0028] The secondary auxiliary gear is meshed with a tertiary main gear 5 on one side. The tertiary main gear 5 is located below the output gear 6 and is assembled on the tertiary gear shaft in the housing 8, completing the three-stage transmission cooperation, which is more stable.

[0029] The specific usage and function of this embodiment are as follows:

[0030] The structural features of the present solution can be seen in the cross-sectional view as follows: a complete DC brushless motor is formed by the circuit board 1, the stator assembly 9, the rotor assembly 10 and the first output shaft 3, and the input speed and torque of the DC brushless motor are output by the output gear 6 through the primary main gear 4 and the secondary main gear.

[0031] In this solution, a spring 2 is added between the rotor and the upper cover 7, which can better ensure the stability of the motor rotation and increase the self-locking torque of the actuator.

[0032] During the entire life cycle, it can drive the air conditioner blades to swing more smoothly, and prevent the air conditioner blades from moving due to vehicle bumps when not working. At the same time, it can also ultimately maintain lower noise than similar products on the market.

[0033] 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.

[0034] 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. Automobile air-conditioning outlet actuator, characterized by: The invention comprises a housing (8), wherein a mounting chamber is arranged in the housing (8), a brushless DC motor is fixed in the mounting chamber, a first output shaft (3) is arranged at a driving end of the brushless DC motor, a transfer gear is arranged on the first output shaft (3), a gear set is meshed on one side of the transfer gear, the gear set is arranged in the mounting chamber, a rotor assembly (10) is arranged in the brushless DC motor, the rotor assembly (10) is assembled and connected with the first output shaft (3), a stator assembly (9) is also matched outside the rotor assembly (10), a spring (2) is arranged on the top of the transfer gear of the first output shaft (3), and is positioned and pressed by an upper cover (7).

2. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: A circuit board (1) is mounted on the housing (8) and is used to control the overall driving operation.

3. The automobile air-conditioning outlet actuator according to claim 1, characterized in that: The gear kit comprises: a primary gear shaft, The primary gear shaft is mounted in a housing (8), the primary gear shaft being equipped with a primary main gear (4) meshing with the transfer gear, and a primary auxiliary gear mounted 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 (11) in the housing (8). A secondary auxiliary gear is also mounted on the second output shaft (11) and is located below the output gear (6); A third-stage main gear (5) is meshed with one side of the second-stage auxiliary gear. The third-stage main gear (5) is located below the output gear (6) and is mounted on a third-stage gear shaft in the housing (8).

4. The automotive air-conditioning outlet actuator according to claim 1, characterized in that: The shell (8) is provided with assembly holes (801) on all four sides, and an upper cover (7) is adapted to be mounted on the shell (8) and is fixed by bolts through the assembly holes (801).

5. The automobile air-conditioning outlet actuator according to claim 1, characterized in that: The spring (2) is in an inverted cone shape as a whole and is made of 60Si2MnA material.

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