CN211783513U

CN211783513U - Rotary limit sensor

Info

Publication number: CN211783513U
Application number: CN202020676275.8U
Authority: CN
Inventors: 刘向阳
Original assignee: Xi'an Xutong Electronic Technology Corp
Current assignee: Xi'an Xutong Electronic Technology Corp
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-10-27
Anticipated expiration: 2030-04-28

Abstract

The utility model provides a rotatory spacing sensor, belongs to the sensor field, its characterized in that: the device comprises an insulating base, a binding post and a rocker arm assembly; two insulating supports are arranged on the insulating base; binding posts are arranged on both sides of the insulating support; an arc-shaped groove is arranged at the tail end of the binding post; the wiring end is fixedly connected with the tail end; the vertical projection of the tail end of the binding post is the same as the shape of the corresponding insulating base; a film-covered PCB is arranged in the arc-shaped groove; the rocker arm assembly comprises a rocker arm and a conductive carbon brush; the two ends of the rocker arm are respectively a fixed end and a moving end; the fixed end is arranged at the circle center of the arc; the moving end is connected with the conductive carbon brush; the conductive carbon brush is arranged in the arc-shaped groove. The guide point carbon brush fixedly connected with the moving end of the rocker arm reciprocates between the film-coated PCBs through the change of the angle, so that the connection and disconnection of the binding post are realized, the problems of complex angle control, low service life and poor economy in the rotary actuating mechanism are solved, the fine control of output is realized, and the market prospect is wide.

Description

Rotary limit sensor

Technical Field

The utility model belongs to the sensor field especially relates to a rotatory spacing sensor.

Background

In current space flight and aviation equips, use the motor to actuate the mechanism in a large number and accomplish corresponding action, realize automated control, in a large amount of fixed angle rotation shock mechanisms, for reaching accurate closed-loop control, the shock action in certain angle range is accomplished to two kinds of control thoughts below using more: firstly, an angle sensor or an optical encoder is used in a mechanism, and the rotation angle of the mechanism is recorded for signal feedback, so that the mechanism is complex to control, has poor precision and cannot meet the complex natural environments of low temperature, salt fog and the like; and secondly, a limit switch is arranged at an angle limit position, the structure can meet the requirement of river capital, the service life is short, and the overload damage of the microswitch is easily caused under the overload condition of the mechanism, so that the mechanism can not be controlled in a closed loop.

Disclosure of Invention

The utility model aims at solving the above problem, provide a rational in infrastructure, the reliability is high, and economic nature is good, can realize the accurate control, the rotatory spacing sensor of simple realization.

The utility model discloses a rotation limit sensor, which comprises an insulating base, a binding post and a rocker arm component;

the insulating base is arc-shaped; two insulating supports are arranged on the insulating base; the insulating support is C-shaped; the insulating support is vertical to the insulating base;

binding posts are arranged on both sides of the insulating support;

the wiring terminal comprises a tail end and a wiring terminal; the tail end of the binding post is arc-shaped; an arc-shaped groove is formed in the tail end of the wiring terminal; the longitudinal section of the tail end of the binding post is in a C shape same as that of the insulating support; the wiring end is cylindrical; the wiring terminal is fixedly connected with the tail end;

the binding posts comprise a first binding post, a second binding post and a third binding post; the first wiring terminal is arranged between the two insulating supports; the second binding post and the third binding post are respectively arranged at the outer sides of the two insulating supports; the vertical projection of the tail end of the binding post is the same as the shape of the corresponding insulating base;

a film-covered PCB is arranged in the arc-shaped groove;

the rocker arm assembly comprises a rocker arm and a conductive carbon brush; the two ends of the rocker arm are respectively a fixed end and a moving end; the fixed end is arranged at the circle center of the arc; the moving end is connected with the conductive carbon brush; the conductive carbon brush is arranged in the arc-shaped groove. When the rocker arm assembly is used, the rocker arm assembly is fixed on the rotating shaft, and the conductive carbon brush slides between the film-coated PCBs. The insulating support is installed on the fixed part, and the conductive carbon brush is dragged by the motor to rotate along with the rocker arm, so that the first wiring terminal and the second wiring terminal are conducted or the first wiring terminal and the third wiring terminal are conducted along with the reciprocating rotation of the rocker arm.

The utility model discloses a rotation limit sensor, the tectorial membrane PCB includes top tectorial membrane PCB and bottom tectorial membrane PCB; the top film-covered PCB is arranged on the inner wall of the top of the arc-shaped groove; the bottom film-covered PCB is arranged on the inner wall of the bottom of the arc top groove; the conductive carbon brush is located between the top film-covered PCB and the bottom film-covered PCB.

The utility model discloses a rotatory spacing sensor, be provided with the conducting film on the tectorial membrane PCB; the conductive film comprises a first conductive film, a second conductive film and a third conductive film which are arranged in sequence; the first conductive film, the second conductive film and the third conductive film are arranged in a disconnected mode; the first conductive film is electrically connected with the terminal of the first binding post; the second conductive film is electrically connected with the terminal of the second binding post; the third conductive film is electrically connected to the terminal of the third terminal. When the conductive carbon brush is independently positioned on any one of the first conductive film, the second conductive film and the third conductive film, three paths are separated, when the conductive carbon brush rotates to a position between the two conductive films, the two conductive films are conducted, and meanwhile, a switching signal is sent out. The conducting film design on top tectorial membrane PCB and the bottom tectorial membrane PCB is the same, can play two redundant effects, improves rotatory spacing sensor's reliability.

The utility model discloses a rotatory spacing sensor, the both ends of insulating base set up a base mounting hole respectively; and the insulating base is fixedly arranged on the fixed part through the base mounting hole.

In the rotation limit sensor of the utility model, the fixed end of the rocker arm is provided with a rocker arm mounting hole; the rocker arm is fixedly arranged on the rotating shaft through the mounting hole.

Rotatory spacing sensor, the change that the motion end fixed connection's guide point carbon brush through the rocking arm passes through the angle is reciprocating motion between tectorial membrane PCB, realizes switching on and breaking off of three terminal to solve the gyration and actuate the problem that angular control is complicated, low-lived, the economy is poor in the mechanism, and realize the meticulous control of output, the current control mode of rotatory spacing sensor fungible, market prospect is wide.

Drawings

Fig. 1 is a schematic structural view of a rotation limit sensor according to the present invention;

fig. 2 is a top view of the rotation limit sensor structure of the present invention;

fig. 3 is an exploded view of the structure of the rotation limit sensor of the present invention;

fig. 4 is a schematic view of an electrical connection structure of the binding post according to the present invention;

the structure comprises a first wiring terminal, a second wiring terminal, a 2 insulating base, a 3 bottom film-coated PCB, a 4 top film-coated PCB, a 5 first wiring terminal, a 6 rocker arm, a 7 conductive carbon brush, a 8 third wiring terminal, a 9 first conductive film, a 10 second conductive film, a 11 third conductive film and a 12 insulating support.

Detailed Description

The rotation limit sensor of the present invention will be described in detail with reference to the accompanying drawings and examples.

The rotation limit sensor of the utility model comprises an insulating base 2, a binding post and a rocker arm 6 assembly as shown in fig. 1 and fig. 2; the insulating base 2 is arc-shaped; two insulating supports 12 are arranged on the insulating base 2; the insulating support is C-shaped; the insulating support 12 is vertical to the insulating base 2; two ends of the insulating base 2 are respectively provided with a base mounting hole; the insulating base 2 is fixedly arranged on the fixed part through the base mounting hole; binding posts are arranged on both sides of the insulating support 12; the wiring terminal comprises a tail end and a wiring terminal; the tail end of the binding post is arc-shaped; an arc-shaped groove is formed in the tail end of the wiring terminal; the longitudinal section of the tail end of the binding post is in a C shape same as that of the insulating support; the wiring end is cylindrical; the wiring terminal is fixedly connected with the tail end; the binding posts comprise a first binding post 5, a second binding post 1 and a third binding post 8; the first binding post 5 is arranged between the two insulating supports 12; the second binding post 1 and the third binding post 8 are respectively arranged at the outer sides of the two insulating supports 12; the vertical projection of the tail end of the binding post is the same as the shape of the corresponding insulating base 2; a film-covered PCB is arranged in the arc-shaped groove, and a conductive film is arranged on the film-covered PCB; the conductive film comprises a first conductive film 9, a second conductive film 10 and a third conductive film 11 which are arranged in sequence; the first conductive film 9, the second conductive film 10 and the third conductive film 11 are arranged in a disconnected mode; the first conductive film 9 is electrically connected to the terminal of the first terminal 5; the second conductive film 10 is electrically connected to the terminal of the second terminal 1; the third conductive film 11 is electrically connected to the terminal of the third post 8. When the conductive carbon brush 7 is independently positioned on any one of the first conductive film 9, the second conductive film 10 and the third conductive film 11, the three paths are separated, when the conductive carbon brush rotates to a position between the two conductive films, the two conductive films are conducted, and meanwhile, a switching signal is sent out. The film covered PCB comprises a top film covered PCB4 and a bottom film covered PCB 3; the top film covered PCB4 is arranged on the inner wall of the top of the arc-shaped groove; the bottom film-covered PCB3 is arranged on the inner wall of the bottom of the arc top groove; the conductive carbon brush 7 is located between the top film covered PCB4 and the bottom film covered PCB 3. The film-covered PCB adopted in the implementation is a wear-resistant conductive plastic circuit board.

As shown in fig. 3, the process of forming the rotation limit sensor in this embodiment is as follows: firstly, mechanically (gluing) a second binding post 1 and a third binding post 8 on an insulating base 2; then mechanically mounting (gluing) the first binding post 5 on the insulating base 2; mounting the bottom film-covered PCB3 and the top film-covered PCB4 in a groove of a component consisting of the second binding post 1, the first binding post 5, the third binding post 8 and the insulating support 12; as shown in fig. 4, the second terminal 1, the conductive film on the film-covered PCB, the first terminal 5, and the third terminal 8 are electrically connected. The rocker arm 6 assembly comprises a rocker arm 6 and a conductive carbon brush 7; the rocker arm 6 is an insulator, screw holes are processed on the rocker arm 6, and the rocker arm 6 and the conductive carbon brush 7 are fastened by using screws to form a rocker arm 6 assembly. The two ends of the rocker arm 6 are respectively a fixed end and a moving end; the fixed end is arranged at the circle center of the arc; the moving end is connected with a conductive carbon brush 7; the conductive carbon brush 7 is arranged in the arc-shaped groove. When the rocker arm assembly is used, the rocker arm 6 assembly is fixed on the rotating shaft, and the conductive carbon brush 7 slides between the film-coated PCBs. The insulating support 12 is installed on the fixed component, the conductive carbon brush 7 rotates under the drive of the motor along with the rocker arm 6, and the conduction of the first binding post 5 and the second binding post 1 or the conduction of the first binding post 5 and the third binding post 8 is realized along with the reciprocating rotation of the rocker arm 6. The fixed end of the rocker arm 6 is provided with a rocker arm 6 mounting hole; the rocker arm 6 is fixedly mounted on the rotary shaft through the mounting hole.

After the assembly is finished, the bottom film-covered PCB3 and the top film-covered PCB4 are assembled and debugged to ensure the rotation angle; when the rocker arm assembly is used, the rocker arm 6 assembly is fixed on the rotating shaft, and the conductive carbon brush 7 slides between the film-coated PCBs. Insulating support 12 installs on fixed part, electrically conductive carbon brush 7 is rotatory under the motor drive along with rocking arm 6, when anticlockwise rotation reaches the disconnection department between first conductive film 9 and the second conductive film 10, realize first terminal 5 and the switch-on of second terminal 1 through electrically conductive carbon brush 7, send switch signal of system, the reversal of system control motor, the clockwise rotation of motor, when rotatory disconnection department between first conductive film 9 and the third conductive film 11, realize first terminal 5 and the switch-on of third terminal 8 through electrically conductive carbon brush 7, send switch signal of system, the reversal of system control motor, so reciprocal oscillation work.

In practical use, when the insulated rocker arm 6 drives the conductive carbon brush 7 to reciprocate, the three terminals are not communicated when the conductive carbon brush 7 is positioned on a single conductive film; when the conductive carbonization brush moves between the two conductive films to realize the connection of the two conductive films, a signal is sent to a motor controller, and the motor rotates; the rotation angle is guaranteed by using a mechanical structure, the precision is higher, and the safety is higher compared with a microswitch structure.

Claims

1. A rotation limit sensor is characterized in that: the device comprises an insulating base (2), a binding post and a rocker arm (6) assembly;

the insulating base (2) is arc-shaped; two insulating supports (12) are arranged on the insulating base (2); the insulating support is C-shaped; the insulating support (12) is vertical to the insulating base (2);

binding posts are arranged on both sides of the insulating support (12);

the binding posts comprise a first binding post (5), a second binding post (1) and a third binding post (8); the first binding post (5) is arranged between the two insulating supports (12); the second binding post (1) and the third binding post (8) are respectively arranged at the outer sides of the two insulating supports (12); the vertical projection of the tail end of the binding post is the same as the shape of the corresponding insulating base (2);

a film-covered PCB is arranged in the arc-shaped groove;

the rocker arm (6) assembly comprises a rocker arm (6) and a conductive carbon brush (7); two ends of the rocker arm (6) are respectively a fixed end and a moving end; the fixed end is arranged at the circle center of the arc; the moving end is connected with a conductive carbon brush (7); and the conductive carbon brush (7) is arranged in the arc-shaped groove.

2. The rotational limit sensor according to claim 1, wherein: the film-covered PCB comprises a top film-covered PCB (4) and a bottom film-covered PCB (3); the top film-coated PCB (4) is arranged on the inner wall of the top of the arc-shaped groove; the bottom film-covered PCB (3) is arranged on the inner wall of the bottom of the arc top groove; the conductive carbon brush (7) is positioned between the top film-covered PCB (4) and the bottom film-covered PCB (3).

3. The rotational limit sensor according to claim 2, wherein: a conductive film is arranged on the film-covered PCB; the conductive film comprises a first conductive film (9), a second conductive film (10) and a third conductive film (11) which are arranged in sequence; the first conductive film (9), the second conductive film (10) and the third conductive film (11) are arranged in a disconnected mode; the first conductive film (9) is electrically connected with the terminal of the first terminal (5); the second conductive film (10) is electrically connected with the terminal of the second terminal (1); the third conductive film (11) is electrically connected to the terminal of the third post (8).

4. The rotational limit sensor of claim 3, wherein: and two ends of the insulating base (2) are respectively provided with a base mounting hole.

5. The rotational limit sensor of claim 4, wherein: the fixed end of the rocker arm (6) is provided with a mounting hole of the rocker arm (6).