Angle sensor of control handle

Abstract

The utility model discloses a control handle angle sensor, which comprises a shell, a cover plate and a plurality of leading-out sheets, the shell is detachably and fixedly connected with the cover plate, an electric brush seat and a conductive plastic resistor body are arranged in the shell, the conductive plastic resistor body is fixedly arranged at the bottom of the shell, and the leading-out sheets are arranged on the cover plate. The conductive plastic resistor body is provided with a resistance area and a zero resistance area, the electric brush seat is coaxial with the conductive plastic resistor body and is rotatably connected with the conductive plastic resistor body, the shell and the cover plate, the electric brush seat is fixedly provided with an electric brush, and the electric brush works in the resistance area and the zero resistance area. According to the utility model, the structure is simple, angle detection signals are more stable and reliable by adopting the conductive plastic resistor body and reasonable arrangement of the resistance area and the zero resistance area, and meanwhile, the conductive plastic resistor body has excellent wear resistance, temperature stability and corrosion resistance, and can keep stable performance in various severe environments; the service life of the sensor is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely is a kind of operating handle angle sensor. BACKGROUND

[0002] In modern electronic equipment, operating handle angle sensor plays a vital role, especially in gamepad, flight simulator, industrial control and other fields, the traditional operating handle angle sensor is mostly carbon film sensor, and the working principle of carbon film sensor is to realize angle detection based on the conductivity change of carbon film. When the handle rotates, the brush slides on the carbon film, and the contact area of the carbon film changes, thereby causing the change of resistance value. By measuring the change of resistance value, the rotation angle of the handle can be calculated. However, carbon film sensor has some obvious shortcomings in practical application: first, the wear resistance of carbon film sensor is poor, and the carbon film is easy to wear during long-term use, which leads to unstable sensor output signal and even failure. Such wear not only shortens the service life of the sensor, but also increases the maintenance cost and downtime, which seriously affects the reliability and stability of the system. Secondly, the environmental adaptability of carbon film sensor is poor, and the carbon film material is sensitive to humidity and temperature change in the environment, and is easy to be corroded and polluted. In humid or corrosive environment, the conductivity of carbon film will gradually decrease, and even fail, affecting the service life and stability of the sensor. SUMMARY

[0003] The utility model aims at providing an operating handle angle sensor, which uses a conductive plastic resistor to replace the carbon film to overcome the defects of the carbon film sensor and improve the performance of the operating handle angle sensor.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] An operating handle angle sensor includes a housing, a cover plate and a plurality of lead-out sheets. The housing and the cover plate are detachably fixedly connected. The housing is provided with a brush holder and a conductive plastic resistor. The conductive plastic resistor is fixedly arranged at the bottom of the housing. The conductive plastic resistor is provided with a resistance zone and a zero resistance zone. The brush holder is coaxial with the conductive plastic resistor and is rotationally connected with the conductive plastic resistor, the housing and the cover plate. The brush holder is fixedly provided with a brush. The brush works in the resistance zone and the zero resistance zone. The lead-out sheets are fixedly connected with the housing. One end of the lead-out sheets is exposed outside the housing, and the other end is located inside the housing and is electrically connected with the conductive plastic resistor through a lead wire.

[0006] Further, the conductive plastic resistance body comprises a resistance base body, a resistance area and a zero resistance area are fixedly arranged on the surface of the resistance base body, the resistance area comprises a left resistance area and a right resistance area, the zero resistance area comprises a first zero resistance area, a second zero resistance area, a third zero resistance area and a fourth zero resistance area, the left resistance area and the right resistance area are half annular and symmetrically arranged on the outer edge of the resistance base body, the first zero resistance area is annular and located on the inner edge of the resistance base body, the second zero resistance area, the third zero resistance area and the fourth zero resistance area are located in the resistance area track, the two ends of the second zero resistance area are connected with the lower ends of the left resistance area and the right resistance area respectively, one end of the third zero resistance area is connected with the upper end of the left resistance area, and the fourth zero resistance area is symmetric with the third zero resistance area and one end of which is connected with the upper end of the right resistance area.

[0007] Further, the included angle between the lower ends of the left resistance area and the right resistance area is 8±2 degrees, the included angle between the upper ends of the left resistance area and the right resistance area is 15±2 degrees, and the included angle between the third zero resistance area and the fourth zero resistance area is 8±2 degrees.

[0008] Further, the brush holder comprises a disc hub and a mounting disc, the mounting disc is fixedly connected with the disc hub in a coaxial mode, a mounting hole is formed in the center of the disc hub, flanges are fixedly arranged at the two ends of the disc hub, and mounting columns are fixedly arranged on the mounting disc.

[0009] Further, the brush comprises a brush holder and a brush body, the brush holder is fixedly connected with the mounting disc through the mounting columns, and the brush body is fixedly arranged at the two ends of the brush holder, one of the brush bodies is located in the resistance area track, and the other brush body is located in the first zero resistance area track.

[0010] Further, a disc hub hole for positioning the disc hub is formed in the inner bottom of the shell, a plurality of lead-out sheet grooves are symmetrically formed in the side wall of the shell, pin holes are formed in the lead-out sheet grooves, the lead-out sheet is placed in the lead-out sheet groove and is fixedly connected with the shell through the straight column pin and the pin hole, and a wiring recess is formed at the joint of the inner bottom of the shell and the side wall where the lead-out sheet groove is located.

[0011] Further, gaskets are arranged at the connection positions of the two ends of the brush holder and the shell and the cover plate.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses simple structure, through adopting conductive plastic resistance body and reasonable resistance area, zero resistance area setting, make angle detection signal more stable and reliable, simultaneously, conductive plastic resistance body has excellent wear resistance, temperature stability and corrosion resistance, can keep stable performance under various severe environments, effectively prolongs the service life of sensor, satisfies the higher requirement of modern electronic equipment to angle detection. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1The utility model discloses a structure schematic drawing (hidden cover plate and the installation disc of brush holder);

[0015] Figure 2 For Figure 1 The middle A-A section view;

[0016] Figure 3 It is the shell structure schematic drawing;

[0017] Figure 4 It is the brush holder structure schematic drawing;

[0018] Figure 5 It is the conductive plastic resistance body structure schematic drawing;

[0019] In the drawing: 1 - shell, 101 - hub hole, 102 - lead-out piece slot, 103 - pin hole, 104 - wiring recess, 2 - brush holder, 201 - hub, 202 - installation disc, 203 - mounting hole, 204 - mounting column, 3 - brush, 301 - brush holder, 302 - brush body, 4 - conductive plastic resistance body, 401 - resistance base body, 402 - left resistance area, 403 - right resistance area, 404 - first zero resistance area, 405 - second zero resistance area, 406 - third zero resistance area, 407 - fourth zero resistance area, 5 - cover plate, 6 - lead-out piece, 7 - straight column pin. DETAILED DESCRIPTION

[0020] The utility model will be described in detail below in connection with the drawings and specific embodiment.

[0021] Please refer to Figures 1-5 The utility model provides an embodiment:

[0022] A kind of operating handle angle sensor, including shell 1, cover plate 5 and four lead-out pieces 6, shell 1 is fixedly connected with cover plate 5 by screw, shell 1 is provided with brush holder 2 and conductive plastic resistance body 4, conductive plastic resistance body 4 is fixedly arranged at shell 1 bottom, conductive plastic resistance body 4 is provided with resistance area and zero resistance area, brush holder 2 is coaxial with conductive plastic resistance body 4 and is rotationally connected with conductive plastic resistance body 4, shell 1, cover plate 5, brush holder 2 is fixedly provided with brush 3, brush 3 works in resistance area and zero resistance area, lead-out piece 6 is fixedly connected with shell 1, lead-out piece 6 one end is exposed to shell 1, other end is located in shell 1 and is electrically connected with conductive plastic resistance body 4 by wire, as signal input / output interface.

[0023] The conductive plastic resistance body 4 comprises a resistance base body 401, the surface of the resistance base body 401 is fixedly provided with a resistance area and a zero resistance area, the resistance base body 401 is made of conductive plastic material and is formed by using a hot pressing process, the resistance area is sprayed with graphite resistance paste, and the zero resistance area is sprayed with silver paste, the resistance area comprises a left resistance area 402 and a right resistance area 403, the zero resistance area comprises a first zero resistance area 404, a second zero resistance area 405, a third zero resistance area 406 and a fourth zero resistance area 407, the left resistance area 402 and the right resistance area 403 are half annular and symmetrically arranged at the outer edge of the resistance base body 401, the response consistency of the sensor in the left-right direction is ensured, and the precision and reliability of the sensor are improved, the first zero resistance area 404 is annular and located at the inner edge of the resistance base body 401, the second zero resistance area 405, the third zero resistance area 406 and the fourth zero resistance area 407 are located in the resistance area track, the two ends of the second zero resistance area 405 are connected with the lower ends of the left resistance area 402 and the right resistance area 403 respectively, one end of the third zero resistance area 406 is connected with the upper end of the left resistance area 402, and the fourth zero resistance area 407 is symmetric with the third zero resistance area 406 and one end of which is connected with the upper end of the right resistance area 403. The arrangement of the plurality of zero resistance areas enables the brush 3 to quickly switch to the zero resistance state at a specific position, reduces signal interference, and improves the stability and accuracy of the signal.

[0024] The lower ends of the left resistance area 402 and the right resistance area 403 form an angle of 8±2 degrees, the upper ends of the left resistance area 402 and the right resistance area 403 form an angle of 15±2 degrees, and the angle between the third zero resistance area 406 and the fourth zero resistance area 407 is 8±2 degrees, that is, the effective electrical stroke of the resistance area is within the range of 168.5±2 degrees left and right.

[0025] The brush holder 2 comprises a disc hub 201 and a mounting disc 202, the mounting disc 202 is coaxially fixedly connected with the disc hub 201, a mounting hole 203 is formed in the center of the disc hub 201 and used for mounting a handle, flanges are fixedly arranged at the two ends of the disc hub 201 and used for positioning the brush holder 2 on the shell 1 and the cover plate 5 and forming a rotating connection with the shell 1 and the cover plate 5, and mounting columns 204 are fixedly arranged on the mounting disc 202 and used for mounting the brush 3.

[0026] The brush 3 comprises brush holders 301 and brush bodies 302, the brush holders 301 are fixedly connected with the mounting disc 202 through the mounting columns 204, and the brush bodies 302 are fixedly arranged at the two ends of the brush holders 301, one of the brush bodies 302 is located in the resistance area track, and the other brush body 302 is located in the first zero resistance area 404 track, so that the brush 3 can contact the resistance area and the zero resistance area at the same time during rotation, thereby obtaining signals of resistance values and zero impedance and realizing accurate detection and judgment of the angle of the handle.

[0027] The inner bottom of the shell 1 is provided with a hub hole 101 for positioning the hub 201, the sidewall of the shell 1 is symmetrically provided with a plurality of lead-out piece grooves 102, the lead-out piece groove 102 is provided with a pin hole 103, the lead-out piece 6 is placed in the lead-out piece groove 102 and is fixedly connected with the shell 1 through the straight column pin 7 and the pin hole 103, and the junction of the inner bottom of the shell 1 and the sidewall where the lead-out piece groove 102 is located is provided with a wiring groove 104, so as to leave a wiring space, so that the lead-out piece 6 is electrically connected with the conductive plastic resistance body 4 through a wire.

[0028] The gasket 8 is arranged at the connection between the two ends of the brush holder 2 and the shell 1 and the cover plate 5, and plays a wear-resistant role when the brush holder 2 rotates, so as to avoid direct contact between the brush holder 2 and the shell 1 and the cover plate 5 and cause abrasion.

[0029] When the operating handle rotates, the brush holder 2 rotates, and drives the brush 3 to slide on the resistance area and the zero resistance area of the conductive plastic resistance body 4, when the brush 3 slides in contact with the resistance area, the resistance value changes, and according to the change of the resistance value, the rotation angle of the handle can be calculated.

[0030] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A steering handle angle sensor, characterized by: The utility model relates to a kind of electric resistance brush, including shell (1), cover plate (5) and several lead-out sheets (6), the shell (1) is detachably fixed connection with cover plate (5), electric brush holder (2) and conductive plastic resistance body (4) are provided in the shell (1), the conductive plastic resistance body (4) is fixedly arranged at the bottom of shell (1), the conductive plastic resistance body (4) is provided with resistance area and zero resistance area, the electric brush holder (2) is coaxial with conductive plastic resistance body (4) and is rotatably connected with conductive plastic resistance body (4), shell (1), cover plate (5), the electric brush holder (2) is fixedly provided with electric brush (3), the electric brush (3) works in resistance area and zero resistance area, the lead-out sheet (6) is fixedly connected with shell (1), one end of the lead-out sheet (6) is exposed in shell (1), and the other end is located in shell (1) and is electrically connected with conductive plastic resistance body (4) by wire.

2. A handle angle sensor according to claim 1, characterized in that: The conductive plastic resistance body (4) includes resistance base body (401), the resistance base body (401) surface is fixedly provided with resistance area and zero resistance area, the resistance area includes left resistance area (402) and right resistance area (403), the zero resistance area includes first zero resistance area (404), second zero resistance area (405), third zero resistance area (406) and fourth zero resistance area (407), the left resistance area (402) and right resistance area (403) are half ring and symmetrically arranged on the outer edge of resistance base body (401), the first zero resistance area (404) is annular and located on the inner edge of resistance base body (401), the second zero resistance area (405), third zero resistance area (406), fourth zero resistance area (407) are located in resistance area track, the second zero resistance area (405) is connected with the lower end of left resistance area (402) and right resistance area (403) respectively, one end of the third zero resistance area (406) is connected with the upper end of left resistance area (402), the fourth zero resistance area (407) is symmetric with the third zero resistance area (406) and one end is connected with the upper end of right resistance area (403).

3. A handle angle sensor according to claim 2, wherein: The lower end of the left resistance area (402) and right resistance area (403) is 8±2 degrees, the upper end of the left resistance area (402) and right resistance area (403) is 15±2 degrees, the angle between the third zero resistance area (406) and fourth zero resistance area (407) is 8±2 degrees.

4. A handle angle sensor according to claim 1, characterized in that: The electric brush holder (2) includes hub (201) and mounting disc (202), the mounting disc (202) is coaxially fixedly connected with hub (201), the hub (201) is provided with mounting hole (203) in the center, the hub (201) is fixedly provided with flange at both ends, the mounting disc (202) is fixedly provided with mounting column (204).

5. A handle angle sensor according to claim 4, wherein: The electric brush (3) includes brush holder (301) and brush body (302), the brush holder (301) is fixedly connected with mounting disc (202) by mounting column (204), the brush body (302) is fixedly arranged at both ends of brush holder (301), one piece of brush body (302) is located in resistance area track, and another brush body (302) is located in first zero resistance area (404) track.

6. A handle angle sensor according to claim 1, characterized in that: The inner bottom of the shell (1) is provided with a hub hole (101) for positioning a disc hub (201), the side wall of the shell (1) is symmetrically provided with a plurality of lead-out sheet grooves (102), the lead-out sheet grooves (102) are provided with pin holes (103), the lead-out sheet (6) is placed in the lead-out sheet groove (102) and is fixedly connected with the shell (1) through the straight column pin (7) and the pin hole (103), and the junction of the inner bottom of the shell (1) and the side wall where the lead-out sheet groove (102) is located is provided with a wiring groove (104).

7. A handle angle sensor according to claim 1, characterized in that: The electric brush seat (2) is provided with a gasket (8) at the connection between the two ends and the shell (1) and the cover plate (5).

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