A motor worm for a damper actuator

Abstract

The utility model relates to actuator technical field especially relates to a motor worm for air door actuator, it includes shaft body, sets up the shaft tooth on the shaft body, sets up the worm head for being used to with the output end connection of motor on one end of shaft body, sets up the hemisphere portion on the other end of shaft body, the inside of shaft body is hollow, its characterized in that: at least one air hole is arranged on the hemisphere surface of hemisphere portion, and the air hole is communicated with the inside of shaft body.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, and in particular to a motor worm gear for a damper actuator. Background Technology

[0002] A damper actuator is a drive device that controls the opening, closing, or adjustment of the opening of dampers in an air conditioning system. Its core function is to precisely control the direction and flow of airflow. A damper actuator mainly includes a power source, a transmission mechanism, a control unit, and a feedback device. The power source is generally a motor, and the transmission mechanism is generally a worm gear.

[0003] The worm gear in a transmission mechanism typically has air holes. Current technology places these air holes at the apex of the hemispherical portion at one end of the worm. However, because the apex of the hemispherical portion of the worm contacts a baffle during operation, the circumference of the air hole also contacts the baffle, generating noise. Current technology requires making these air holes very small to reduce noise, resulting in poor ventilation and requiring very fine machining needles. This leads to the machining needles being easily damaged during processing, ultimately increasing overall processing costs and reducing processing efficiency. Utility Model Content

[0004] The technical solution to be solved by this utility model is to provide a motor worm gear for a damper actuator. The damper actuator using this worm gear has lower overall noise, lower processing cost, and higher processing efficiency.

[0005] The technical solution adopted by this utility model is: a motor worm gear for a damper actuator, which includes a shaft body, a shaft tooth disposed on the shaft body, a worm head disposed at one end of the shaft body for connection with the output end of a motor, and a hemispherical part disposed at the other end of the shaft body. The shaft body is hollow inside. The feature is that at least one air hole is disposed on the hemispherical surface of the hemispherical part, and the air hole communicates with the inside of the shaft body.

[0006] Preferably, there are two vents, and the two vents are symmetrically arranged along the apex of the hemisphere.

[0007] Preferably, the side of the vent near the vertex of the hemisphere is a first arc edge, which protrudes away from the vertex.

[0008] Preferably, the diameter of the circle containing the first arc edge is 1-1.2 mm.

[0009] Preferably, the distance between the midpoint of the first arc edge and the vertex of the hemisphere is 0.5-0.6 mm.

[0010] Preferably, the side of the vent away from the vertex of the hemisphere is a second arc edge, and the second arc edge protrudes in the direction away from the vertex.

[0011] Preferably, the diameter of the circle containing the second arc edge is 1.8-2 mm.

[0012] Compared with the prior art, the present invention has the following advantages by adopting the above structure: by moving the air hole from the apex of the hemisphere to the surface of the hemisphere, the air hole will not contact the baffle during operation. This not only greatly reduces noise, but also eliminates the need to make the air hole smaller, which not only greatly reduces production costs, but also improves production efficiency.

[0013] Two air vents are provided, and they are symmetrically arranged along the apex, which makes the overall ventilation effect better.

[0014] The pores with this structure have little impact on the overall strength of the hemisphere and provide good ventilation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a motor worm gear for a damper actuator according to this utility model.

[0016] Figure 2 This is a top view of a motor worm gear used in a damper actuator according to this utility model.

[0017] As shown in the figure: 1. Shaft body; 2. Shaft teeth; 3. Worm head; 4. Hemispherical part; 5. Air hole; 6. First arc edge; 7. Vertex; 8. Second arc edge. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0019] Example 1: A motor worm gear for a damper actuator, such as Figure 1 As shown, it includes a shaft body (1), shaft teeth (2), worm head (3), and a hemispherical part (4), wherein: The shaft body (1) is a cylindrical body with a hollow interior; A shaft tooth (2) is wound around the shaft body (1); The worm head (3) is located at one end of the shaft (1) and is used to connect and fix the output shaft of the motor, thereby driving the shaft (1) to rotate with the output shaft of the motor. The hemispherical part (4) is located at the other end of the shaft body (1). A vent (5) is provided on its hemispherical surface. The vent (5) is connected to the inside of the shaft body (1) so that air can be vented. The vent (5) is not located at the vertex (7) of the hemispherical part (4), but is located on the hemispherical surface at a distance from the vertex (7) of the hemispherical part (4). The overall shape of the vent (5) mainly includes a first arc edge (6), a second arc edge (8), a first connecting edge connecting one side of the first arc edge (6) and one side of the second arc edge (8), and a second connecting edge connecting the other end of the first arc edge (6) and the other side of the second arc edge (8). The diameter of the circle containing the first arc edge (6) is 1.1 mm, and the first arc edge (6) protrudes away from the vertex (7) of the hemisphere (4). The distance between the midpoint of the first arc edge (6) and the vertex (7) of the hemisphere (4) is 0.55 mm. The diameter of the circle containing the second arc edge (8) is 1.9 mm, and the second arc edge (8) protrudes away from the vertex (7) of the hemisphere (4).

[0020] Example 2: The difference from Embodiment 1 is that in Embodiment 2 there are two pores (5), and the two pores (5) are symmetrically arranged along the vertex (7) of the hemisphere (4).

[0021] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0022] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A motor worm gear for a damper actuator, comprising a shaft body (1), a gear (2) disposed on the shaft body (1), a worm head (3) disposed at one end of the shaft body (1) for connection with the output end of a motor, and a hemispherical portion (4) disposed at the other end of the shaft body (1), wherein the shaft body (1) is hollow inside, characterized in that: At least one air hole (5) is provided on the hemispherical surface of the hemispherical part (4), and the air hole (5) is connected to the inside of the shaft body (1).

2. The motor worm gear for a damper actuator according to claim 1, characterized in that: There are two vents (5), and the two vents (5) are symmetrically arranged along the vertex (7) of the hemisphere (4).

3. The motor worm gear for a damper actuator according to claim 1, characterized in that: The side of the vent (5) near the vertex (7) of the hemisphere (4) is a first arc edge (6), which protrudes away from the vertex (7).

4. The motor worm gear for a damper actuator according to claim 3, characterized in that: The diameter of the circle containing the first arc edge (6) is 1-1.2 mm.

5. The motor worm gear for a damper actuator according to claim 3, characterized in that: The distance between the midpoint of the first arc edge (6) and the vertex (7) of the hemisphere (4) is 0.5-0.6 mm.

6. The motor worm gear for a damper actuator according to claim 1, characterized in that: The side of the vent (5) away from the vertex (7) of the hemisphere (4) is the second arc edge (8), which protrudes in a direction away from the vertex (7).

7. The motor worm gear for a damper actuator according to claim 6, characterized in that: The diameter of the circle containing the second arc edge (8) is 1.8-2mm.

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