CN108725752A - A kind of efficient electrically controlled latch gear - Google Patents

Abstract

The invention discloses a high-efficiency electronically controlled locking device, which comprises a casing (2); the casing (2) is provided with a coil component power supply interface (1) and a circuit board interface (7); the casing (2) is provided with a magnetically conductive frame (3) and circuit board (4); the coil assembly (9) is provided on the magnetic frame (3); the coil assembly (9) is electrically connected to the coil power supply interface (1); the coil assembly (9) is provided with a pin shaft (5), one end of the pin shaft (5) is provided with a bipolar magnetic steel assembly (6), and the other end of the pin shaft (5) extends out of the shell (2); the circuit board (4) is provided with a Hall sensor (10 ), the circuit board (4) is electrically connected with the circuit board interface (7). The invention has high locking and unlocking efficiency, large locking torque, small volume and simple structure. The present invention uses the level of the output voltage of the Hall switch device to judge the state of the lock pin, and has strong versatility.

Description

A high-efficiency electronically controlled locking device

technical field

The invention relates to a high-efficiency electronically controlled locking device, which belongs to the technical field of servo control.

Background technique

For an aircraft system with a normal layout, the steering gear is located at the tail of the aircraft. Because the aircraft's rudder surface is affected by the external hinge moment, it generally cannot be stabilized at zero position during flight, but will deflect in the air with the maneuvering of the carrier aircraft. , which will affect the service life of the key components and sensors of the steering gear. At the same time, if the aircraft is launched in an emergency when the rudder surface is not at zero position, it will cause serious launch safety. Unlock the rudder surface, and the reliability of the rudder surface locking and unlocking determines the flight reliability of the whole aircraft system.

The current rudder surface locking modes include electromagnetic brakes for locking the motor shaft, electromagnetic locking mechanisms, pneumatic locking mechanisms and rudder surface shear pin mechanisms, etc. The most reliable is the irreversible pneumatic locking mechanism or shearing mode, but the pneumatic locking mechanism The locking mechanism or shear mode has limited use in some aircraft, and is not suitable for aircraft rudder systems that require high reliability.

Contents of the invention

The purpose of the present invention is to provide a kind of high-efficiency locking and unlocking efficiency, large locking torque, high reliability electronically controlled locking device for the aircraft rudder system, so as to meet the requirements of the aircraft rudder system for the locking device, thereby overcoming the prior art lack of.

To achieve the above object, the present invention adopts the following technical solutions:

A high-efficiency electronically controlled locking device of the present invention comprises a casing; the casing is provided with a coil assembly power supply interface and a circuit board interface; a magnetic frame and a circuit board are arranged inside the casing; a coil assembly is provided on the magnetic frame; Electrically connected with the coil power supply interface; there is a pin shaft in the coil assembly, a bipolar magnetic steel assembly is provided at one end of the pin shaft, and the other end of the pin shaft protrudes from the shell; a Hall sensor is provided on the circuit board, and the interface between the circuit board and the circuit board Electrical connections.

In the aforementioned high-efficiency electronically controlled locking device, the Hall sensor on the circuit board is located near the bipolar magnetic steel assembly; the Hall sensor adopts a Hall switch integrated circuit.

In the aforementioned high-efficiency electronically controlled locking device, an RC filter circuit is provided between the signal output terminal Uout and the ground terminal GND on the circuit board.

In the aforementioned high-efficiency electronically controlled locking device, the pin shaft is located in the central hole of the coil assembly and is slidingly connected with the central hole of the coil assembly; the pin shaft is connected with the armature of the coil assembly.

Due to the adoption of the above technical solution, compared with the prior art, the present invention has high locking and unlocking efficiency, large locking torque, small volume and simple structure. The present invention uses the level of the output voltage of the Hall switch device to judge the state of the lock pin, and has strong versatility.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

The marks in the figure are as follows: 1-coil assembly power supply interface, 2-housing, 3-magnetic frame, 4-circuit board, 5-pin shaft, 6-bipolar magnetic steel assembly, 7-Hall sensor interface, 8 -RC filter circuit, 9-coil assembly, 10-Hall sensor, 11-spring.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

A high-efficiency electronically controlled locking device of the present invention, as shown in Figure 1: includes a casing 2; the casing 2 is provided with a coil assembly power supply interface 1 and a circuit board interface 7; the casing 2 is provided with a magnetic frame 3 and a circuit board 4. The magnetic frame 3 is provided with a coil assembly 9; the coil assembly 9 is electrically connected to the coil power supply interface 1; the coil assembly 9 is provided with a pin shaft 5, and one end of the pin shaft 5 is provided with a bipolar magnetic steel assembly 6, and the pin shaft 5 The other end protrudes from the shell 2; the Hall sensor 10 is provided on the circuit board 4, and the circuit board 4 is electrically connected to the circuit board interface 7. The Hall sensor 10 on the circuit board 4 is located near the bipolar magnetic steel assembly 6; the Hall sensor 10 adopts a Hall switch integrated circuit. An RC filter circuit 8 is provided between the signal output terminal Uout on the circuit board 4 and the ground terminal GND. The pin shaft 5 is located in the central hole of the coil assembly 9 and is slidably connected with the central hole of the coil assembly 9 ; the pin shaft 5 is connected with the armature of the coil assembly 9 .

Example

The high-efficiency electronically controlled locking device of this example is used for locking and unlocking of the servo system. This example includes a coil assembly, the pin shaft is placed in the center of the coil, a bipolar magnet is installed on the pin shaft, and the unlocking signal is detected by the Hall sensor and the processing circuit.

Specifically as shown in Figure 1, the power supply interface 1 of the coil assembly, the shell 2, the magnetic frame 3, the circuit board 4, the pin shaft 5, the bipolar magnetic steel assembly 6, the circuit board interface 7, the RC filter circuit 8, the coil Assembly 9, Hall sensor 10 and spring 11.

The pin shaft 5 is a movable pin shaft, and the Hall sensor 10 is installed on the circuit board 4 using a Hall switch integrated circuit as a position detection component, and the bipolar magnetic steel assembly 6 is installed on the pin shaft 5 . When the coil assembly 9 is powered on through the coil assembly power supply interface 1, the coil assembly 9 magnetizes the armature, and the magnetized armature and the magnetic frame 3 generate a large electromagnetic attraction force to drive the pin shaft 5 to move, and the pin shaft 5 drives the bipolar magnet. The steel component 6 moves, so that the bipolar magnetic steel component 6 covers or separates from the Hall sensor 10, and the locking pin 5 is attracted or locked, and the Hall sensor 10 outputs a feedback signal at the same time. The invention has the characteristics of simple structure. The state of the lock pin is judged by using the output voltage of the Hall switch device, which has strong versatility.

Working process and principle of the present invention

The device of the present invention performs locking and unlocking by the expansion and contraction of the pin shaft 5 interfering with the boss locking disc fixed on the motor shaft. When the power is off, the pin shaft 5 stretches out under the action of the spring 11, and is inserted between the two bosses to prevent the motor from rotating; when the power is turned on, the pin shaft 5 retracts without interfering with the bosses, and the motor can rotate freely. When the coil assembly 9 is not energized, the spring 11 is in a relaxed state, and the axial pressure generated by the spring 11 will push the armature to move in the direction of spring 11 elongation, and the pin shaft 5 connected with the armature is aligned with the slot on the brake disc accurately In the case of , the pin shaft 5 will fall into the corresponding groove. If the motor shaft is rotated at this time, since the brake disc is fixed on the motor shaft and the pin shaft 5 is stuck in the brake disc, the motor shaft can rotate The angular range is only limited by the disc slots. The electromagnetic lock can lock the motor shaft and the rudder surface within the allowable zero error range by means of the pin shaft 5 to realize the locking function of the electromagnetic lock.

Claims (4)

1. a kind of efficient electrically controlled latch gear, including shell（2）；It is characterized in that：Shell（2）Coil block power supply is equipped with to connect Mouthful（1）And circuit board interface（7）；Shell（2）It is interior to be equipped with magnetic guiding frame（3）And circuit board（4）；Magnetic guiding frame（3）It is equipped with coil group Part（9）；Coil block（9）With coil power supply interface（1）Electrical connection；Coil block（9）It is interior to be equipped with axis pin（5）, axis pin（5）One End is equipped with bipolarity magnetic steel component（6）, axis pin（5）The other end stretches out shell（2）；Circuit board（4）It is equipped with Hall sensor （10）, circuit board（4）With circuit board interface（7）Electrical connection.

2. efficient electrically controlled latch gear according to claim 1, it is characterised in that：The circuit board（4）On hall sensing Device（10）Positioned at bipolarity magnetic steel component（6）Near；Hall sensor（10）Using hall ic.

3. efficient electrically controlled latch gear according to claim 1, it is characterised in that：The circuit board（4）On signal output It is equipped with RC filter circuits between the Uout and ground terminal GND of end（8）.

4. efficient electrically controlled latch gear according to claim 1, it is characterised in that：The axis pin（5）Positioned at coil block（9） Centre bore in, and and coil block（9）Centre bore be slidably connected；Axis pin（5）With coil block（9）Armature connection.