Output control mechanism of rotary actuator

Abstract

The utility model discloses an output control mechanism of a rotary actuator, which comprises a shell, an outer cover and an output shaft, the output shaft in the shell is connected with a rotary power source through a gear assembly, and a signal reflection unit is embedded on the gear assembly. A circuit board with a signal receiving unit is arranged on the inner wall of the shell and on the side edge of the signal reflecting unit through a contact pin, and the outer end of the output shaft penetrates through the outer cover to be connected with a connecting rod. The output shaft, the gear assembly and the signal reflection unit are of an integrated structure through an injection molding process. According to the utility model, the circuit board with the signal receiving unit and the signal reflecting unit can be firmly and reliably mounted without displacement or separation from the original position, so that the rotation power output of the output shaft can be accurately fed back.

Description

Technical Field

[0001] The utility model relates to a power drive device, in particular to an output control mechanism of a rotary actuator. Background Art

[0002] Power drive devices can be divided into linear actuators, rotary actuators, etc. Linear actuators are actuators that output linear motion, while rotary actuators output rotary motion. Rotary actuators are composed of rotor assemblies and stator assemblies. The rotor is a rotating component that is used to realize the conversion of electrical energy into mechanical energy and mechanical energy into electrical energy. At present, rotary actuators generally include brush holder assemblies (including brush holder bodies, carbon brushes, carbon brush springs, inductors, sensors, etc.), tail cover assemblies, stator assemblies, rotor assemblies, etc. The circuit board with the sensor (corresponding to the position of the gear assembly) is installed in the bottom groove of the housing, and the magnet is installed in an adjacent position, but the installation firmness of both is not enough, and there is a risk of detachment, movement, and poor power output accuracy, which affects the normal operation of the rotary actuator. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies in the prior art and to provide an output control mechanism for a rotary actuator which has firm and reliable installation and assembly and precise power output.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: the output control mechanism of the rotary actuator includes a shell, an outer cover, and an output shaft. The output shaft in the shell is connected to the rotary power source through a gear assembly. A signal reflecting unit is embedded in the gear assembly. A circuit board with a signal receiving unit is installed on the inner wall of the shell and on the side of the signal reflecting unit through a pin. The outer end of the output shaft passes through the outer cover and is connected to the connecting rod.

[0005] The circuit board with the signal receiving unit is electrically connected to an external power source through a power pin slot and an embedded wire in the housing. The output shaft, the gear assembly and the signal reflecting unit are an integrated structure through an injection molding process. A plurality of concave points are provided on the inner ring of the signal reflecting unit and at the embedded joint with the gear assembly. A guard plate is provided in the housing and at the side of the circuit board with the signal receiving unit, and the guard plate and the housing are an integrated structure.

[0006] After adopting the structure of the utility model, the output shaft is connected to the rotational power source through the gear assembly, the output shaft and the connecting rod are in a rotational output mode, the signal reflection unit is embedded in the gear assembly and is an integrated structure with the output shaft, the circuit board with the signal receiving unit is installed on the inner wall of the shell through the pin, and the guard plate provides installation position protection, which is conducive to the firm and reliable installation of the circuit board and the signal reflection unit. The two will not be displaced or leave their original positions, thereby accurately feeding back the rotational power output of the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the output control mechanism of the rotary actuator of the utility model.

[0008] Figure 2 for Figure 1 Schematic diagram of the structure of the signal reflection unit (i.e., magnet). DETAILED DESCRIPTION

[0009] Reference Figure 1 , Figure 2 It can be seen that the output control mechanism of the rotary actuator of the utility model includes a housing 1, an outer cover 5, and an output shaft 8. The output shaft 8 is located inside the housing 1 and the outer cover 5. The output shaft 8 located inside the housing is connected to a rotary power source 11 (a rotary motor) through a gear assembly 9 (and an intermediate gear 10). A signal reflection unit 4 (i.e., a magnet) is embedded on the gear assembly 9. A circuit board 2 (PCB board, having a punching position connected to the plug pin) with a signal receiving unit 3 is installed on the inner wall of the housing 1 and on the side of the signal reflection unit 4 through a plug pin 12. The outer end of the output shaft 8 passes through the outer cover 5 and is connected to the connecting rod 7. A bearing 6 sleeved with the output shaft 8 is installed in the outer cover 5.

[0010] The circuit board 2 with the signal receiving unit 3 is electrically connected to the external power supply through the power pin slot 11 in the housing 1 and the embedded wire. The output shaft 8, the gear assembly 9 and the signal reflecting unit 4 are integrated into an integral structure through the injection molding process, and the three are more firmly combined. A plurality of concave points 14 (such as Figure 2 As shown in the figure, the embedding firmness of the gear assembly and the signal reflection unit is further enhanced. A guard plate 13 is provided inside the housing 1 and on the side of the circuit board 2 with the signal receiving unit. The guard plate 14 and the housing 1 are an integrated structure, which further enhances the assembly firmness of the housing and the circuit board with the signal receiving unit. The rotating power source 11 of the utility model is started and the output shaft 8 rotates through the rotation of the intermediate gear 10 and the gear assembly 9, and the connecting rod 7 outputs power. The signal reflection unit 4 (i.e., the magnet) sends a signal, which is received by the circuit board 2 with the signal receiving unit 3, and the rotating power output of the output shaft 8 is accurately fed back.

Claims

1. An output control mechanism of a rotary actuator, comprising a housing, an outer cover, and an output shaft, characterized in that: The output shaft in the shell is connected to the rotating power source through a gear assembly, a signal reflecting unit is embedded in the gear assembly, a circuit board with a signal receiving unit is installed on the inner wall of the shell and on the side of the signal reflecting unit through a pin, and the outer end of the output shaft is connected to the connecting rod through an outer cover.

2. The output control mechanism of the rotary actuator according to claim 1, characterized in that: The circuit board with the signal receiving unit is electrically connected to an external power source through a power pin slot in the housing and an embedded wire.

3. The output control mechanism of the rotary actuator according to claim 1 or 2, characterized in that: The output shaft, the gear assembly and the signal reflection unit are formed into an integrated structure through an injection molding process.

4. The output control mechanism of the rotary actuator according to claim 3, characterized in that: A plurality of concave points are arranged on the inner ring of the signal reflection unit and at the embedded joint with the gear assembly.

5. The output control mechanism of the rotary actuator according to claim 1 or 2, characterized in that: A guard plate is arranged inside the shell and at the side of the circuit board with the signal receiving unit. The guard plate and the shell are in an integrated structure.

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