Miniature planetary steering engine

Abstract

The utility model provides a miniature planetary steering engine, and belongs to the technical field of servo controllers. According to the miniature steering engine, the miniature planetary reducer is introduced into the miniature steering engine, so that the miniature planetary steering engine inherits the functions of the steering engine and the planetary reducer, and the transmission shaft is connected to the output shaft of the miniature planetary reducer and used for increasing the shaft diameter of the shaft body and prolonging the length of the shaft body; the potentiometer can be smoothly installed at the output end of the miniature planetary steering engine, and detection of the angle position is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of servo controllers, and in particular relates to a micro planetary servo. Background Art

[0002] A servo is a position (angle) servo drive. It consists of a micro motor and a potentiometer that detects the angular position of the micro motor's output shaft. To increase the servo's output torque, it can be combined with a micro planetary reducer to create a planetary servo.

[0003] In the prior art, the potentiometer of an ordinary planetary servo is usually arranged between a micro motor and a micro planetary reducer. However, for a micro planetary servo, since the output shaft of the micro motor and the input and output shafts of the micro planetary reducer have small diameters and short output shaft lengths, the potentiometer cannot be installed. Therefore, the potentiometer cannot be directly installed between the micro motor and the micro planetary reducer.

[0004] Therefore, it is necessary to provide a micro planetary servo to solve the above problems. Utility Model Content

[0005] The utility model provides a micro planetary servo, which introduces a micro planetary reducer into the micro planetary servo, so that the micro planetary servo inherits the functions of the servo and the micro planetary reducer, and a transmission shaft is connected to the output shaft of the micro planetary reducer to increase the shaft diameter and extend the length of the output shaft to meet the installation conditions of the potentiometer, so that the potentiometer can be smoothly installed at the output end of the micro planetary servo, realize the detection of the angular position, and effectively solve at least one technical problem mentioned in the background technology.

[0006] In order to solve the above technical problems, the utility model is achieved as follows:

[0007] A micro planetary servo, comprising:

[0008] case;

[0009] A power assembly includes a micro motor, a micro planetary reducer, a transmission shaft, and an output terminal. The micro motor and the micro planetary reducer are encapsulated in the housing. The input shaft of the micro planetary reducer is connected to the output shaft of the micro motor. One end of the transmission shaft is connected to the output shaft of the micro planetary reducer, and the other end is connected to the output terminal. The end of the output terminal away from the transmission shaft is exposed outside the housing. The driving force generated by the micro motor is sequentially transmitted to the outside through the micro planetary reducer, the transmission shaft, and the output terminal.

[0010] A potentiometer is encapsulated in the housing and surrounds the periphery of the transmission shaft, and is used to detect the angular position of the micro planetary servo.

[0011] As a preferred improvement, the diameter of the transmission shaft is larger than the diameter of the output shaft of the micro planetary reducer.

[0012] As a preferred improvement, the output shaft of the micro motor, the input shaft of the micro planetary reducer, the output shaft of the micro planetary reducer, the transmission shaft and the axes of the output terminal are all located on the same straight line.

[0013] As a preferred improvement, the shell includes a middle shell, a bottom shell and an upper shell, the middle shell is a hollow structure with openings at both ends, the bottom shell is arranged at the bottom of the middle shell and blocks the bottom opening of the middle shell, the upper shell is arranged at the top of the middle shell and blocks the top opening of the middle shell, and the micro motor and the micro planetary reducer are both accommodated in the hollow area of ​​the middle shell.

[0014] As a preferred improvement, a partition is provided in the middle shell, which divides the hollow area of ​​the middle shell into a first chamber and a second chamber. The first chamber and the second chamber are arranged side by side along the axial direction of the middle shell, and the first chamber is arranged adjacent to the bottom shell, and the second chamber is arranged adjacent to the upper shell. The micro motor and the micro planetary reducer are encapsulated in the first chamber, and the potentiometer is encapsulated in the second chamber.

[0015] As a preferred improvement, a through-hole is provided through the partition, the through-hole connects the first chamber and the second chamber, one end of the transmission shaft is located in the first chamber, and the other end extends through the through-hole into the second chamber.

[0016] As a preferred improvement, it further includes a control circuit board, which is installed in the first cavity, and the micro motor and the potentiometer are electrically connected to the control circuit board.

[0017] As a preferred improvement, the potentiometer is connected to the control circuit board via a signal line, and the signal line passes through the partition and is connected to the control circuit board via the first chamber.

[0018] The beneficial effects of the present invention are:

[0019] The micro planetary reducer is introduced into the micro servo, so that the micro planetary servo inherits the functions of the servo and the micro planetary reducer, and a transmission shaft is connected to the output shaft of the micro planetary reducer to increase the shaft diameter and extend the length of the output shaft, so that the potentiometer can be smoothly installed at the output end of the micro planetary servo to realize the detection of the angular position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A three-dimensional structural diagram showing a micro planetary servo provided by the present invention;

[0021] Figure 2 express Figure 1 The exploded structure diagram of the micro planetary servo shown;

[0022] Figure 3 An exploded structural diagram showing the power assembly and potentiometer;

[0023] Figure 4 express Figure 1 The cross-sectional view of the micro planetary servo is shown. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Please refer to Figures 1-4 This embodiment provides a micro planetary servo, including a housing 10, a power assembly 20 and a potentiometer 30.

[0026] The shell 10 includes a middle shell 11, a bottom shell 12 and an upper shell 13. The middle shell 11 is a hollow structure with openings at both ends. The bottom shell 12 is arranged at the bottom of the middle shell 11 and blocks the bottom opening of the middle shell 11. The upper shell 13 is arranged at the top of the middle shell 11 and blocks the top opening of the middle shell 11.

[0027] In order to improve the sealing performance, gaskets can be further provided at the connection positions of the bottom shell 12 and the upper shell 13 with the middle shell 11 , and the gaskets can be rubber gaskets or metal gaskets.

[0028] The power assembly 20 includes a micro motor 21, a micro planetary reducer 22, a transmission shaft 23 and an output terminal 24. The micro motor 21 and the micro planetary reducer 22 are both encapsulated in the housing 10. The input shaft of the micro planetary reducer 22 is connected to the output shaft of the micro motor 21, and the output terminal 24 is connected to the output shaft of the micro planetary reducer 22.

[0029] The micro motor 21 serves as a power source and drives the micro planetary reducer 22 to rotate after being energized. The micro planetary reducer 22 is used to adjust the output speed of the micro motor 21. The structures of the micro motor 21 and the micro planetary reducer 22 can adopt conventional structures in the field, and this embodiment does not impose any restrictions on this.

[0030] One end of the transmission shaft 23 is connected to the output shaft of the micro planetary reducer 22, and the other end is connected to the output terminal 24. The output terminal 24 is located outside the housing 10 at one end away from the transmission shaft 23. The driving force generated by the micro motor 21 is transmitted to the outside world through the micro planetary reducer 22, the transmission shaft 23, and the output terminal 24 in sequence. The output terminal 24 serves as a power output port and is connected to an external component that requires power input. For example, when the micro planetary servo is used in a toy car, the output terminal 24 can be connected to the wheel to drive the toy car.

[0031] The micro motor 21 and the micro planetary reducer 22 are both accommodated in the housing 10 , and specifically in the hollow area of ​​the middle shell 11 .

[0032] The output shaft of the micro motor 21, the input shaft of the micro planetary reducer 22, the output shaft of the micro planetary reducer 22, the transmission shaft 23 and the axis of the output terminal 24 are all located on the same straight line, with a compact structure, which can effectively control the space occupied laterally by the micro planetary servo, so that the micro planetary servo maintains a slender appearance and meets the development needs of miniaturization.

[0033] The transmission shaft 23 has a larger diameter than the output shaft of the micro planetary reducer 22. This increases the diameter and length of the output shaft to meet the installation requirements of the potentiometer 30. The transmission shaft 23 also serves as a transition between the micro planetary reducer 22 and the output terminal 24, ensuring that the output terminal 24 is more compatible with the shaft size of the micro planetary reducer 22.

[0034] The potentiometer 30 is encapsulated in the housing 10 and surrounds the periphery of the transmission shaft 23, and is used to detect the angular position of the micro planetary servo. Its specific structure and measurement principle are conventional technologies in this field and are not limited in this embodiment.

[0035] In this solution, a micro planetary reducer is incorporated into the servo, allowing the micro planetary servo to inherit the functions of both, offering the advantages of both. Furthermore, a transmission shaft 23 is added between the micro planetary reducer 22 and the output terminal 24, enabling smooth installation of the potentiometer 30.

[0036] Furthermore, a partition 110 is provided in the middle shell 11. The partition 110 divides the hollow area of ​​the middle shell 11 into a first chamber 111 and a second chamber 112. The first chamber 111 and the second chamber 112 are arranged side by side along the axis of the middle shell 11, with the first chamber 111 being adjacent to the bottom shell 12, and the second chamber 112 being adjacent to the upper shell 13. The micro motor 21 and the micro planetary reducer 22 are encapsulated in the first chamber 111, and the potentiometer 30 is encapsulated in the second chamber 112. Since the potentiometer 30 is a wearing part, it is separately encapsulated in the second chamber 112 to facilitate maintenance and replacement of the potentiometer 30. When disassembling the potentiometer 30, it is not necessary to disassemble the micro motor 21 and the micro planetary reducer 22.

[0037] The partition 110 is penetrated by a through hole 113 , which connects the first chamber 111 and the second chamber 112 . One end of the transmission shaft 23 is located in the first chamber 111 , and the other end extends through the through hole 113 into the second chamber 112 .

[0038] It should be noted that a bearing needs to be provided on the periphery of the output terminal 24 , which can also adopt a conventional structure in the art.

[0039] Furthermore, the micro planetary servo also includes a control circuit board 40, which is installed in the first chamber 111. The micro motor 21 and the potentiometer 30 are electrically connected to the control circuit board 40, and the control circuit board provides power and controls operation.

[0040] The potentiometer 30 is connected to the control circuit board 40 via a signal line 31. The signal line 31 passes through the partition 110 and is connected to the control circuit board 40 via the first chamber 111. The signal line 31 is also completely encapsulated within the housing 10, which can effectively protect the signal line 31 and extend its service life.

[0041] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A micro planetary servo, characterized in that: include: case; A power assembly includes a micro motor, a micro planetary reducer, a transmission shaft, and an output terminal. The micro motor and the micro planetary reducer are encapsulated in the housing. The input shaft of the micro planetary reducer is connected to the output shaft of the micro motor. One end of the transmission shaft is connected to the output shaft of the micro planetary reducer, and the other end is connected to the output terminal. The end of the output terminal away from the transmission shaft is exposed outside the housing. The driving force generated by the micro motor is sequentially transmitted to the outside through the micro planetary reducer, the transmission shaft, and the output terminal. A potentiometer is encapsulated in the housing and surrounds the periphery of the transmission shaft, and is used to detect the angular position of the micro planetary servo.

2. The micro planetary servo according to claim 1, characterized in that: The shaft diameter of the transmission shaft is larger than the shaft diameter of the output shaft of the micro planetary reducer.

3. The micro planetary servo according to claim 1, characterized in that: The output shaft of the micro motor, the input shaft of the micro planetary reducer, the output shaft of the micro planetary reducer, the transmission shaft and the axis of the output terminal are all located on the same straight line.

4. The micro planetary servo according to claim 1, characterized in that: The shell includes a middle shell, a bottom shell and an upper shell. The middle shell is a hollow structure with openings at both ends. The bottom shell is arranged at the bottom of the middle shell and blocks the bottom opening of the middle shell. The upper shell is arranged at the top of the middle shell and blocks the top opening of the middle shell. The micro motor and the micro planetary reducer are both accommodated in the hollow area of ​​the middle shell.

5. The micro planetary servo according to claim 4, characterized in that: A partition is provided in the middle shell, and the partition divides the hollow area of ​​the middle shell into a first chamber and a second chamber. The first chamber and the second chamber are arranged side by side along the axial direction of the middle shell, and the first chamber is arranged adjacent to the bottom shell, and the second chamber is arranged adjacent to the upper shell. The micro motor and the micro planetary reducer are encapsulated in the first chamber, and the potentiometer is encapsulated in the second chamber.

6. The micro planetary servo according to claim 5, characterized in that: The partition is provided with a through-hole, the through-hole connecting the first chamber and the second chamber, one end of the transmission shaft is located in the first chamber, and the other end extends through the through-hole into the second chamber.

7. The micro planetary servo according to claim 5, characterized in that: It also includes a control circuit board, which is installed in the first cavity. The micro motor and the potentiometer are both electrically connected to the control circuit board.

8. The micro planetary servo according to claim 7, characterized in that: The potentiometer is connected to the control circuit board via a signal line, and the signal line passes through the partition and is connected to the control circuit board via the first cavity.

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