Automobile air conditioning damper actuator

Abstract

The utility model provides a kind of automobile air conditioner air door executor, including executor shell, motor and worm gear;The inner bottom of executor shell is provided with recess, motor is inlaid with recess and is axially limited, worm gear is coaxially sleeved and is fixed on the output shaft of motor;The inner bottom of executor shell is vertically provided with baffle, the side of baffle towards worm gear is abutted with the outer end of worm gear, the side of baffle away from worm gear is gap matched with the inner wall of executor shell, the side of baffle away from worm gear and the inner wall of executor shell are embedded with elastic member, and elastic member is used to exert elastic force to baffle to make baffle keep with the outer end of worm gear abutted state;The utility model under the joint action of baffle and elastic member, can effectively eliminate the axial movement of worm gear and the output shaft of motor, and effectively curb the generation of abnormal sound.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive air conditioning damper accessories, and more specifically, to an automotive air conditioning damper actuator. Background Technology

[0002] An automotive air conditioning damper actuator is a drive component used to drive the blades inside the automotive air conditioning vent to swing, thereby adjusting the direction of airflow from the vent. Existing automotive air conditioning damper actuators mainly consist of an actuator housing and a motor, worm gear, and gear set located inside the housing. The worm gear is coaxially sleeved and fixed to the output shaft of the motor, and the worm gear meshes with the input gear in the gear set for transmission. The output gear in the gear set serves as the output end of the automotive air conditioning damper actuator. However, when using the aforementioned automotive air conditioning damper actuator, because the output shaft of the motor has a certain axial movement space, when the load on the automotive air conditioning damper actuator is uneven, the force on the worm gear will also be uneven. This can cause axial movement of the worm gear and the output shaft of the motor, resulting in abnormal noise, which in turn affects the comfort of the occupants. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an automotive air conditioning damper actuator, which, under the combined action of the baffle and the elastic element, can effectively eliminate the axial movement of the worm gear and the output shaft of the motor, and effectively suppress the generation of abnormal noise.

[0004] This utility model provides an automotive air conditioning damper actuator, including an actuator housing, a motor, and a worm gear. A groove is provided on the inner bottom of the actuator housing, where the motor is fitted and axially limited. The worm gear is coaxially sleeved and fixed to the output shaft of the motor. A baffle is vertically provided on the inner bottom of the actuator housing. The side of the baffle facing the worm gear abuts against the outer end of the worm gear, while the side of the baffle away from the worm gear has a clearance fit with the inner wall of the actuator housing. An elastic element is embedded between the side of the baffle away from the worm gear and the inner wall of the actuator housing. The elastic element applies elastic force to the baffle to keep it abutting against the outer end of the worm gear.

[0005] By adopting the above-mentioned structure, this utility model can reliably achieve flexible clamping of the worm gear and the output shaft of the motor in the axial direction under the combined action of the baffle and the elastic element, thereby effectively eliminating the axial movement of the worm gear and the output shaft of the motor and effectively suppressing the generation of abnormal noise.

[0006] In one possible implementation, a convex ball head is provided at the middle of the outer end of the worm, and the ball head abuts against the side of the baffle facing the worm. By providing a convex ball head at the middle of the outer end of the worm, the outer end of the worm abuts against the side of the baffle facing the worm by the ball head, thereby reducing the contact area between the outer end of the worm and the baffle, that is, reducing the friction between the worm and the baffle, thereby effectively preventing wear on the worm and the baffle, and ensuring the smoothness of the worm rotation.

[0007] In one possible implementation, a guide slope is provided at the upper end of the baffle facing the worm gear. The guide slope is used to cooperate with the ball head to guide it so that the ball head abuts against the end face of the baffle facing the worm gear. By providing a guide slope at the upper end of the baffle facing the worm gear, after the worm gear is fixed to the output shaft of the motor, and when the motor and worm gear are assembled together onto the actuator housing, the guide slope can cooperate with the ball head to guide it so that the ball head abuts against the end face of the baffle facing the worm gear, thereby facilitating the assembly of the motor and worm gear with the actuator housing.

[0008] In one possible implementation, the baffle is integrally molded on the inner bottom of the actuator housing; by adopting this structure, it has the advantages of high connection strength between the baffle and the actuator housing, and convenient baffle installation; the actuator housing and the baffle are integrally injection molded.

[0009] In one possible implementation, an expansion portion is provided at the connection between the lower end of the baffle and the bottom of the actuator housing; by adopting this structure, the connection strength between the baffle and the bottom of the actuator housing can be increased, which can effectively prevent the baffle from breaking relative to the actuator housing.

[0010] In one possible implementation, the elastic element is formed in an upward-opening "U" shape. The first end of the elastic element abuts against the inner wall of the actuator housing, and the second end of the elastic element abuts against the upper end face of the baffle and the side away from the worm. By employing such an elastic element, the elastic element can reliably apply elastic force to the baffle to keep the baffle in contact with the outer end of the worm. The elastic element is made of a metallic material.

[0011] In one possible implementation, a slot is provided on the inner wall of the actuator housing, and the first end of the elastic element is vertically inserted into the slot. The left and right sides of the first end of the elastic element abut against the two side walls of the slot, respectively. By adopting this structure, the left and right limits of the elastic element and the actuator housing can be realized, thereby preventing the elastic element from detaching from the baffle, that is, the elastic element can reliably apply elastic force to the baffle.

[0012] In one possible implementation, a transversely convex arc-shaped protrusion is provided on the second end of the elastic member, and the protrusion abuts against the end face of the upper end of the baffle and the side away from the worm gear; by adopting this structure, the deformation resistance of the second end of the elastic member can be improved, thereby enabling the elastic member to reliably apply elastic force to the baffle.

[0013] In one possible implementation, both the first and second ends of the elastic member are laterally provided with outwardly convex arc-shaped protrusions. One of the protrusions abuts against the inner wall of the actuator housing, and the other protrusion abuts against the end face of the upper end of the baffle and the side away from the worm gear. By providing protrusions on both the first and second ends of the elastic member, the deformation resistance of the first and second ends of the elastic member can be improved. Furthermore, when the elastic member is assembled into the gap between the baffle and the actuator housing, it is not necessary to distinguish the orientation of the elastic member, thereby facilitating the assembly of the elastic member. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partially exploded three-dimensional structural diagram of the present invention; Figure 3 A three-dimensional structural diagram of the actuator housing; Figure 4 for Figure 3 A magnified structural diagram of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the elastic element. Detailed Implementation

[0015] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0016] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0017] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] See Figures 1-5 As shown in the figure, this application discloses an automotive air conditioning damper actuator, including an actuator housing 1, a motor 2, and a worm gear 3; a groove 11 is provided on the inner bottom of the actuator housing 1, the motor 2 is fitted into the groove 11 and is axially limited, and the worm gear 3 is coaxially sleeved and fixed on the output shaft of the motor 2; a baffle 12 is vertically provided on the inner bottom of the actuator housing 1, the side of the baffle 12 facing the worm gear 3 abuts against the outer end of the worm gear 3, the side of the baffle 12 away from the worm gear 3 is clearance-fitted with the inner wall of the actuator housing 1, and an elastic element 4 is embedded between the side of the baffle 12 away from the worm gear 3 and the inner wall of the actuator housing 1, the elastic element 4 is used to apply elastic force to the baffle 12 so that the baffle 12 is kept in abutting against the outer end of the worm gear 3.

[0020] A convex ball head 31 is provided at the middle of the outer end of the worm 3. The ball head 31 abuts against the side of the baffle 12 facing the worm 3. By providing the convex ball head 31 at the middle of the outer end of the worm 3, the outer end of the worm 3 abuts against the side of the baffle 12 facing the worm 3 by the ball head 31, thereby reducing the contact area between the outer end of the worm 3 and the baffle 12, that is, reducing the friction between the worm 3 and the baffle 12, thereby effectively avoiding wear of the worm 3 and the baffle 12, and ensuring the smoothness of the worm 3 rotation.

[0021] A guide slope 121 is provided at the upper end of the baffle 12 facing the worm 3. The guide slope 121 is used to cooperate with the ball head 31 for guidance so that the ball head 31 abuts against the end face of the baffle 12 facing the worm 3. After the guide slope 121 is provided at the upper end of the baffle 12 facing the worm 3, after the worm 3 is fixed to the output shaft of the motor 2, and when the motor 2 and the worm 3 are assembled together onto the actuator housing 1, the guide slope 121 can cooperate with the ball head 31 for guidance so that the ball head 31 abuts against the end face of the baffle 12 facing the worm 3, which can facilitate the assembly of the motor 2 and the worm 3 with the actuator housing 1.

[0022] The baffle 12 is integrally formed on the inner bottom of the actuator housing 1; by adopting this structure, it has the advantages of high connection strength between the baffle 12 and the actuator housing 1, and convenient installation of the baffle 12; the actuator housing 1 and the baffle 12 are integrally injection molded.

[0023] An expansion portion 122 is provided at the connection between the lower end of the baffle 12 and the bottom of the actuator housing 1. By adopting this structure, the connection strength between the baffle 12 and the bottom of the actuator housing 1 can be increased, which can effectively prevent the baffle 12 from breaking relative to the actuator housing 1.

[0024] The elastic element 4 forms an upward-facing "U" shape. The first end of the elastic element 4 abuts against the inner wall of the actuator housing 1, and the second end of the elastic element 4 abuts against the upper end of the baffle 12 and the end face away from the worm 3. By using this elastic element 4, the elastic element 4 can reliably apply elastic force to the baffle 12 so that the baffle 12 remains in contact with the outer end of the worm 3. The elastic element 4 is made of metal.

[0025] A slot 13 is provided on the inner wall of the actuator housing 1. The first end of the elastic member 4 is vertically inserted into the slot 13, and the left and right sides of the first end of the elastic member 4 abut against the two side walls of the slot 13 respectively. By adopting this structure, the left and right positions of the elastic member 4 and the actuator housing 1 can be limited, thereby preventing the elastic member 4 from detaching from the baffle 12, that is, the elastic member 4 can reliably apply elastic force to the baffle 12.

[0026] The second end of the elastic member 4 is provided with a transversely convex arc-shaped protrusion 41, which abuts against the end face of the upper end of the baffle 12 and away from the worm gear 3. By adopting this structure, the deformation resistance of the second end of the elastic member 4 can be improved, thereby enabling the elastic member 4 to reliably apply elastic force to the baffle 12.

[0027] Both the first and second ends of the elastic member 4 are laterally provided with outwardly convex arc-shaped protrusions 41. One of the protrusions 41 abuts against the inner sidewall of the actuator housing 1, and the other protrusion 41 abuts against the end face of the upper end of the baffle 12 away from the worm gear 3. By providing protrusions 41 on both the first and second ends of the elastic member 4, the deformation resistance of the first and second ends of the elastic member 4 can be improved. When the elastic member 4 is assembled into the gap between the baffle 12 and the actuator housing 1, it is not necessary to distinguish the orientation of the elastic member 4, which can facilitate the assembly of the elastic member 4.

[0028] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automotive air conditioning damper actuator, comprising an actuator housing (1), a motor (2), and a worm gear (3); a groove (11) is provided on the inner bottom of the actuator housing (1), the motor (2) is fitted into the groove (11) and axially limited, and the worm gear (3) is coaxially sleeved and fixed on the output shaft of the motor (2); characterized in that: A baffle (12) is vertically arranged on the inner bottom of the actuator housing (1). The side of the baffle (12) facing the worm (3) abuts against the outer end of the worm (3). The side of the baffle (12) away from the worm (3) is clearance-fitted with the inner wall of the actuator housing (1). An elastic element (4) is embedded between the side of the baffle (12) away from the worm (3) and the inner wall of the actuator housing (1). The elastic element (4) is used to apply elastic force to the baffle (12) so that the baffle (12) remains in contact with the outer end of the worm (3).

2. The automotive air conditioning damper actuator according to claim 1, characterized in that: The outer end of the worm (3) is provided with a protruding ball head (31) in the middle, and the ball head (31) abuts against the side of the baffle (12) facing the worm (3).

3. The automotive air conditioning damper actuator according to claim 2, characterized in that: The upper end of the baffle (12) and the side facing the worm (3) are provided with a guide slope (121), which is used to cooperate with the ball head (31) for guidance so that the ball head (31) abuts against the end face of the baffle (12) facing the worm (3).

4. The automotive air conditioning damper actuator according to claim 1, characterized in that: The baffle (12) is integrally formed on the inner bottom of the actuator housing (1).

5. The automotive air conditioning damper actuator according to claim 4, characterized in that: An expansion portion (122) is provided at the connection between the lower end of the baffle (12) and the bottom of the actuator housing (1).

6. The automotive air conditioning damper actuator according to any one of claims 1-5, characterized in that: The elastic element (4) forms an upward-facing "U" shape. The first end of the elastic element (4) abuts against the inner wall of the actuator housing (1), and the second end of the elastic element (4) abuts against the upper end of the baffle (12) and the end face away from the worm (3).

7. The automotive air conditioning damper actuator according to claim 6, characterized in that: The actuator housing (1) has a slot (13) on its inner sidewall. The first end of the elastic element (4) is vertically inserted into the slot (13). The left and right sides of the first end of the elastic element (4) abut against the two sidewalls of the slot (13) respectively.

8. The automotive air conditioning damper actuator according to claim 6, characterized in that: The second end of the elastic element (4) is provided with a convex arc-shaped protrusion (41), which abuts against the end face of the upper end of the baffle (12) and away from the worm (3).

9. The automotive air conditioning damper actuator according to claim 8, characterized in that: The first and second ends of the elastic element (4) are both provided with outwardly protruding arc-shaped protrusions (41). One of the protrusions (41) abuts against the inner wall of the actuator housing (1), and the other protrusion (41) abuts against the end face of the upper end of the baffle (12) away from the worm (3).

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