Compact actuator transmission structure

Abstract

The utility model discloses a compact actuator transmission structure which comprises an upper shell and a lower shell, a first-stage tooth is arranged in the lower shell, an output tooth is arranged in the lower shell, a ball bearing is arranged at the bottom end of the output tooth, a second-stage tooth is arranged in the lower shell, a motor tooth is arranged in the lower shell, a rotating shaft is arranged in the center of the second-stage tooth, and a motor is arranged at the bottom of the lower shell. A round boss is arranged at the bottom of the inner wall of the lower shell and comprises a cylinder, the center of the first-stage tooth and the center of the second-stage tooth are sleeved and fixed with rotating shafts, the output tooth is made of plastic, a round groove is formed in the bottom end of the output tooth, and the ball bearing is installed in the groove in the bottom end of the output tooth and assembled with the cylinder. Through the arrangement of the first-stage gear, the output gear, the ball bearing, the second-stage gear, the rotating shaft and the circular boss, the structure can reduce the size and save space while increasing the number of teeth in a limited space, so that the size of the electric actuator is reduced, and the electric actuator is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to a compact actuator transmission structure. Background Art

[0002] An electric actuator is a device that can convert electrical energy into mechanical motion and is widely used in various fields. In the automotive field, electric actuators can be used to control the intake and exhaust valves of an engine, adjust the opening and closing times of the valves, thereby optimizing combustion efficiency and power output. An electric actuator usually includes components such as a motor, a transmission structure, a control circuit, and a housing. Among them, the transmission structure is responsible for transmitting the output of the motor and converting the electric power of the electric actuator into mechanical force.

[0003] The prior art has the following defects or problems: The overall automatic control system structure of the existing actuator transmission structure often has limited space and the size of the gearbox is restricted, resulting in an insufficient speed ratio and the output torque not meeting the requirements. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a compact actuator transmission structure to solve the problems proposed in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A compact actuator transmission structure includes an upper shell and a lower shell. A first-stage gear is arranged inside the lower shell, an output gear is arranged inside the lower shell, a ball bearing is arranged at the bottom end of the output gear, a second-stage gear is arranged inside the lower shell, a motor gear is arranged inside the lower shell, a rotating shaft is arranged at the center of the second-stage gear, a motor is arranged at the bottom of the lower shell, and a circular boss is opened at the bottom inner wall of the lower shell. The circular boss includes a cylinder.

[0006] As a preferred technical solution of the utility model, the motor is fixed to the bottom of the lower shell by cross-recessed head screws and the output end of the motor extends into the lower shell. The motor gear is sleeved and fixed on the output end of the motor.

[0007] As a preferred technical solution of the utility model, rotating shafts are sleeved and fixed at the centers of the first-stage gear and the second-stage gear, and one ends of the two rotating shafts are both installed at the bottom inner wall of the lower shell.

[0008] As a preferred technical solution of the utility model, the first-stage gear and the second-stage gear are both in a "convex" shape. The motor gear meshes with the first-stage gear, and the first-stage gear meshes with the second-stage gear.

[0009] As a preferred technical solution of the utility model, the output gear is made of plastic material. A circular groove is opened at the bottom end of the output gear, and the ball bearing is installed in the groove at the bottom end of the output gear and the ball bearing is assembled with the cylinder.

[0010] As a preferred technical solution of the present utility model, the circular boss is adapted to the output gear, and the output gear is installed on the circular boss.

[0011] As a preferred technical solution of the present utility model, the output gear meshes with the secondary gear. An opening adapted to the output gear is provided on the upper shell. The upper shell and the lower shell are fixed by cross countersunk head screws, and the top end of the output gear extends out of the upper shell.

[0012] Compared with the prior art, the present utility model provides a compact actuator transmission structure, which has the following beneficial effects:

[0013] The compact actuator transmission structure is composed of a primary gear, a secondary gear and an output gear. The output gear and the ball bearing are combined to form an independent component structure, which can play a transmission role and have a better meshing state. While increasing the number of teeth, the volume is reduced, and the effect of maintaining stable and reliable operation is achieved, making the whole product more compact and reliable, convenient for installation and disassembly, and having a reasonable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall appearance structure of the present utility model;

[0015] Figure 2 It is a schematic diagram of the overall structure of the present utility model after the upper shell is removed;

[0016] Figure 3 It is a schematic diagram of the bottom structure of the output gear of the present utility model;

[0017] Figure 4 It is a schematic diagram of the lower shell structure of the present utility model after the output gear is removed;

[0018] Figure 5 It is a schematic diagram of the connection between the ball bearing and the cylinder of the present utility model;

[0019] Figure 6 It is a schematic diagram of the secondary gear structure of the present utility model.

[0020] In the figure: 1. Upper shell; 2. Primary gear; 3. Output gear; 4. Ball bearing; 5. Secondary gear; 6. Motor gear; 7. Lower shell; 8. Rotating shaft; 9. Motor; 10. Circular boss; 11. Cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1-6 , in this embodiment: a compact actuator transmission structure includes an upper shell 1 and a lower shell 7. The upper shell 1 can seal the lower shell 7. A first-stage gear 2 is arranged in the lower shell 7. Since the first-stage gear 2 meshes with the second-stage gear 5, the rotation of the first-stage gear 2 can drive the rotation of the second-stage gear 5. An output gear 3 is arranged in the lower shell 7. A ball bearing 4 is arranged at the bottom end of the output gear 3. A second-stage gear 5 is arranged in the lower shell 7. A motor gear 6 is arranged in the lower shell 7. A rotating shaft 8 is arranged at the center of the second-stage gear 5. A motor 9 is arranged at the bottom of the lower shell 7. A circular boss 10 is provided at the bottom inner wall of the lower shell 7. The circular boss 10 includes a cylinder 11.

[0023] In this embodiment, the motor 9 is fixed to the bottom of the lower shell 7 by cross-recessed head screws and the output end of the motor 9 extends into the lower shell 7. The motor gear 6 is sleeved and fixed on the output end of the motor 9;

[0024] Specifically, the rotation of the output end of the motor 9 can drive the rotation of the motor gear 6;

[0025] In this embodiment, rotating shafts 8 are sleeved and fixed at the centers of both the first-stage gear 2 and the second-stage gear 5. One ends of the two groups of rotating shafts 8 are both installed at the bottom inner wall of the lower shell 7;

[0026] Specifically, the rotating shaft 8 facilitates the rotational installation of the first-stage gear 2 and the second-stage gear 5;

[0027] In this embodiment, both the first-stage gear 2 and the second-stage gear 5 are in a "convex" shape. The motor gear 6 meshes with the first-stage gear 2, and the first-stage gear 2 meshes with the second-stage gear 5;

[0028] Specifically, since the motor gear 6 meshes with the first-stage gear 2, the rotation of the motor gear 6 can drive the rotation of the first-stage gear 2;

[0029] In this embodiment, the output gear 3 is made of plastic material. A circular groove is provided at the bottom end of the output gear 3. The ball bearing 4 is installed in the groove at the bottom end of the output gear 3 and the ball bearing 4 is assembled with the cylinder 11;

[0030] Specifically, the ball bearing 4 facilitates the rotational installation of the output gear 3;

[0031] In this embodiment, the circular boss 10 is adapted to the output gear 3, and the output gear 3 is installed on the circular boss 10;

[0032] Specifically, the circular boss 10 of the lower shell 7 facilitates the installation of the output gear 3;

[0033] In this embodiment, the output gear 3 meshes with the secondary gear 5. An opening adapted to the output gear 3 is provided on the upper shell 1. The upper shell 1 and the lower shell 7 are fixed by cross-recessed countersunk screws, and the top end of the output gear 3 extends out of the upper shell 1;

[0034] Specifically, since the output gear 3 meshes with the secondary gear 5, the rotation of the secondary gear 5 can drive the rotation of the output gear 3.

[0035] The working principle and usage process of the present utility model: Fix the motor 9 to the bottom of the lower shell 7 by cross-recessed countersunk screws, connect the motor gear 6 to the output end of the motor 9, mesh the motor gear 6 with the primary gear 2, then install the rotating shaft 8, press-fit it onto the lower shell 7, and then install the secondary gear 5 on the corresponding rotating shaft 8 so that the secondary gear 5 meshes with the primary gear 2. Since the output gear 3 is injection-molded, the circular groove provided at the bottom end is used to assemble the ball bearing 4, which enables the output gear 3 to form an independent component structure. The circular boss 10 can be used to assemble the output gear 3 and make the output gear 3 mesh with the secondary gear 5. Lock the upper shell 7 and the lower shell 1 with cross-recessed countersunk screws. This concave-convex structure of the actuator transmission structure is convenient for installation and disassembly, has a reasonable structure, not only ensures the smooth transmission of the gears but also enhances the service life of the gears.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A compact actuator transmission structure, comprising an upper shell (1) and a lower shell (7), characterized in that: The lower shell (7) is provided with a primary tooth (2), the lower shell (7) is provided with an output tooth (3), the bottom end of the output tooth (3) is provided with a ball bearing (4), the lower shell (7) is provided with a secondary tooth (5), the lower shell (7) is provided with a motor tooth (6), the center of the secondary tooth (5) is provided with a rotating shaft (8), the bottom of the lower shell (7) is provided with a motor (9), and the bottom of the inner wall of the lower shell (7) is provided with a circular boss (10), and the circular boss (10) includes a cylinder (11).

2. A compact actuator transmission structure according to claim 1, characterized in that: The motor (9) is fixed to the bottom of the lower shell (7) by means of a cross countersunk screw and the output end of the motor (9) extends into the lower shell (7), and the motor teeth (6) are sleeved and fixed on the output end of the motor (9).

3. A compact actuator transmission structure according to claim 1, characterized in that: A rotating shaft (8) is sleeved and fixed at the center of the primary teeth (2) and the secondary teeth (5), and one end of the two groups of rotating shafts (8) is installed on the bottom of the inner wall of the lower shell (7).

4. A compact actuator transmission structure according to claim 1, characterized in that: The primary teeth (2) and the secondary teeth (5) are both in a "convex" shape; the motor teeth (6) are meshed with the primary teeth (2), and the primary teeth (2) are meshed with the secondary teeth (5).

5. A compact actuator transmission structure according to claim 1, characterized in that: The output tooth (3) is made of plastic material. A circular groove is provided at the bottom end of the output tooth (3). The ball bearing (4) is installed in the groove at the bottom end of the output tooth (3), and the ball bearing (4) is assembled with the cylinder (11).

6. A compact actuator transmission structure according to claim 1, characterized in that: The circular boss (10) is matched with the output tooth (3), and the output tooth (3) is mounted on the circular boss (10).

7. A compact actuator transmission structure according to claim 1, characterized in that: The output teeth (3) mesh with the secondary teeth (5); an opening adapted to the output teeth (3) is provided on the upper shell (1); the upper shell (1) and the lower shell (7) are fixed by cross countersunk screws, and the top end of the output teeth (3) protrudes out of the upper shell (1).

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