Involute type single-circle full-scale potential angle sensor

Abstract

The involute type single-circle full-scale potential angle sensor comprises a base, an O-shaped electric conductor, an involute type electric conductor and a movement guide plate are coaxially and fixedly arranged on the upper end face of the base, an involute type guide groove corresponding to the involute type electric conductor is formed in the movement guide plate, and the number of circumferential circles of the involute type guide groove and the involute type electric conductor is larger than one. The rotating shaft rotatably penetrates through the base and the interior of a center hole of the moving guide plate, a rotating beam located on the upper end face of the moving guide plate is fixedly arranged in a through hole in the upper end of the rotating shaft in a penetrating mode, a rotary electric brush is fixedly arranged at one end of the rotating beam, and an involute electric brush capable of sliding is arranged at the other end of the rotating beam. A second contact on the lower side of the involute electric brush penetrates through the involute type guide groove to be connected with the involute type electric conductor in an abutting mode, and a plurality of pins are arranged on the outer side face of the base. According to the potential angle sensor, the circumferential 360-degree full-scale measurement function is achieved, the accuracy and the measurement range of potential angle measurement are remarkably improved, and the universality is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic components, and in particular to an involute type single-turn full-scale potential angle sensor. Background Art

[0002] The function of potentiometric angle sensors is to measure the angle or rotational position of an object or system. It can convert the angle information of an object into an electrical signal or digital signal for control, monitoring, feedback or other related applications. Potentiometric angle sensors are widely used in many fields, including mechanical engineering, aerospace, automobiles, robotics, medical equipment, etc.

[0003] At present, the potentiometric angle sensor on the market mainly adopts a C-type structure, and there is a gap in the circumference of its conductive ring. The existence of this gap brings significant problems: there is a dead zone in the measurement process, which makes the sensor unable to complete 360° full-scale measurement and cannot meet the needs of complete 360° measurement in certain occasions. This limits the application scope and practical utility of the potentiometric angle sensor to a certain extent. To this end, the present invention proposes an involute single-turn full-scale potentiometric angle sensor to solve the above technical problems. Summary of the invention

[0004] The object of the present invention is to overcome the defects existing in the prior art and provide an involute single-turn full-scale potential angle sensor, wherein an O-type conductor and an involute conductor arranged in a corresponding sleeve are provided on the upper end face of the base, an involute guide groove corresponding to the involute conductor is provided on the moving guide plate, and the circumferential number of turns of the involute conductor and the involute guide groove are both greater than one circle, when in use, an excitation voltage of a certain value is loaded on the pin electrically connected to the inner side end of the involute conductor and the pin at the outer side, and the measuring current passes through the pin electrically connected to the inner side end of the involute conductor, the effective voltage dividing section on the involute conductor, the involute brush, the rotating beam, the rotary brush, the O-type conductor in sequence. The pins electrically connected on the O-type conductor enter the control circuit board, so that when the rotating shaft drives the rotating beam to rotate one circle, the effective voltage dividing section on the involute conductor will reflect different electrical signals according to the position angle of the rotating beam, realizing the full-scale measurement function of 360° in the circumferential direction, overcoming the measurement dead zone problem of the existing C-type potential angle sensor; at the same time, through the structural design of the involute conductor, the accuracy and measurement range of the potential angle measurement can be significantly improved; it can be applicable to more complex application scenarios and working conditions, greatly improving the versatility, so that the involute single-turn full-scale potential angle sensor of the present invention has a wider application potential in mechanical engineering, automation control and other fields.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is to design an involute single-turn full-scale potential angle sensor, including a rotating shaft, a moving guide plate and a base, the upper end surface of the base is fixedly provided with an O-type conductor and an involute conductor, the involute conductor is located on the inner side of the O-type conductor or surrounds the outer side of the O-type conductor, the moving guide plate is fixedly provided on the upper end surface of the base, the moving guide plate is provided with an involute guide groove corresponding to the involute conductor, and the circumferential number of the involute conductor and the involute guide groove are both greater than one circle, and the base and the moving guide plate are correspondingly provided with a center through the O-type conductor and the involute conductor. The rotating shaft is rotatably connected to the center hole of the base and the moving guide plate, and the upper end of the rotating shaft is provided with a through hole in the horizontal direction, and a rotating beam located on the upper end surface of the moving guide plate is fixedly provided inside the through hole, a rotating beam is fixedly provided with a rotary brush at one end of the rotating beam, and an involute brush that can slide along the length direction of the rotating beam is provided at the other end, a contact point 1 located at the lower side of the rotary brush passes through the moving guide plate and contacts with the O-type conductor, a contact point 2 located at the lower side of the involute brush passes through the involute guide groove on the moving guide plate and contacts with the involute conductor, and a plurality of pins electrically connected to the two ends of the O-type conductor and the involute conductor are provided on the outer side surface of the base.

[0006] The involute single-turn full-scale potential angle sensor of the present invention is characterized in that an O-type conductor and an involute conductor arranged in a corresponding sleeve are provided on the upper end surface of a base, an involute guide groove corresponding to the involute conductor is provided on a moving guide plate, and the circumferential number of turns of the involute conductor and the involute guide groove is greater than one turn. When in use, an excitation voltage of a certain value is loaded on the pin electrically connected to the inner side end of the involute conductor and the pin on the outer side, and the measuring current passes through the pin electrically connected to the inner side end of the involute conductor, the effective voltage dividing section on the involute conductor, the involute brush, the rotating beam, the rotating brush, the O-type conductor and the O-type conductor electrically connected The connected pins enter the control circuit board, so that when the rotating shaft drives the rotating beam to rotate one circle, the effective voltage divider section on the involute conductor will reflect different electrical signals according to the position angle of the rotating beam, realizing the 360° full-scale measurement function in the circumferential direction, overcoming the measurement dead zone problem of the existing C-type potential angle sensor; at the same time, through the structural design of the involute conductor, the accuracy and measurement range of the potential angle measurement can be significantly improved; it can be applicable to more complex application scenarios and working conditions, greatly improving the versatility, so that the involute single-turn full-scale potential angle sensor of the present invention has a wider application potential in mechanical engineering, automation control and other fields.

[0007] The preferred technical solution is that the upper end of the rotating shaft is provided with an end cap, and the outer periphery of the end cap extends outside the outer peripheral side of the rotating shaft, the outer side surface of the rotating shaft is provided with an annular groove, the upper end surface of the base is provided with an annular boss coaxially surrounding the outer peripheral side of the center hole, and the O-type conductor and the involute conductor are coaxially surrounding the outer peripheral side of the annular boss, the annular boss and the upper end surface of the base located inside it enclose an annular step groove, when the rotating shaft is connected to the center hole of the base and the moving guide plate, the lower end of the outer periphery of the end cap is embedded in the annular step groove, the annular groove on the rotating shaft is correspondingly located below the base, and a retaining spring is installed inside the annular groove to limit the rotating shaft to the center hole of the base and the moving guide plate. The rotating shaft is axially limited inside the center hole of the base and the moving guide plate by the end cap located at the upper end and the retaining spring clamped inside the annular groove, and the installation method is simple, ensuring that the involute single-turn full-scale potential angle sensor of the present invention can be smoothly prepared and implemented.

[0008] A further preferred technical solution is that the inner diameter of the center hole on the moving guide plate is larger than the inner diameter of the center hole on the base, and the involute conductor surrounds the outer side of the O-type conductor, and the contact point located on the lower side of the rotating brush passes through the center hole on the moving guide plate and contacts the O-type conductor. The contact point on the lower side of the rotating brush directly passes through the center hole on the moving guide plate and contacts the O-type conductor. The structural design is ingenious and reasonable, avoiding the need to provide an annular groove on the moving guide plate, ensuring the integrity of the moving guide plate, and helping to improve the assembly convenience and efficiency of the involute single-turn full-scale potentiometric angle sensor of the present invention.

[0009] Another preferred technical solution is that the pins include pin one electrically connected to the inner end of the involute conductor, pin three electrically connected to the outer end of the involute conductor, and pin two electrically connected to the O-type conductor.

[0010] A further preferred technical solution is that the pins 1, 2 and 3 are all located on the same side of the base. The pins are arranged on the same side of the base, which facilitates the convenience of electrical connection with external devices during use.

[0011] Another preferred technical solution is that the base is an injection molded part, the O-type conductor and the involute conductor are both screen-printed on the upper end surface of the base, and the moving guide plate is secondary injection molded on the base. The assembly method of the base, the O-type conductor, the involute conductor and the moving guide plate is simple, ensuring the high efficiency of the involute single-turn full-scale potentiometric angle sensor of the present invention during production and processing.

[0012] A further preferred technical solution is that both the rotary brush and the involute brush are open ring structures, and a pair of arc legs bent outward are correspondingly provided on the two side surfaces of the opening, and the convex arc side of the arc legs faces downward, the pair of arc legs on the rotary brush constitute the contact one, and the pair of arc legs on the involute brush constitute the contact two, the rotary brush sleeve is fixedly mounted on one end of the rotating beam, and the involute brush is slidably sleeved on the other end of the rotating beam. The rotary brush and the involute brush are cleverly and reasonably designed in structure, both of which are designed as elastic ring structures with an opening on one side, and the involute brush sleeve is installed on the end of the rotating beam to naturally form a sliding connection, avoiding the additional design of the sliding connection structure between the involute brush and the rotating beam, and ensuring the convenience and efficiency of the rotary brush and the involute brush when they are installed at the end of the rotating beam.

[0013] A further preferred technical solution is that the rotary brush and the involute brush are both beryllium copper. Beryllium copper itself has good fatigue resistance and is suitable for use in environments that require frequent bending or vibration. The brushes made of beryllium copper with an elastic structure greatly improve the service life of the involute single-turn full-scale potentiometric angle sensor of the present invention.

[0014] A further preferred technical solution is that the lower end of the rotating shaft is provided with a rotation-stopping surface located below the annular groove.

[0015] A further preferred technical solution is that the lower end surface of the base is provided with a plurality of positioning posts. When in use, the positioning posts are inserted into the designated mounting holes of the external device, and the positioning method is quick and accurate, which helps to improve the installation and positioning efficiency of the involute single-turn full-scale potentiometric angle sensor of the present invention when in use.

[0016] The advantages and beneficial effects of the present invention are:

[0017] 1. An involute single-turn full-scale potential angle sensor of the present invention is provided with an O-type conductor and an involute conductor arranged in a corresponding sleeve on the upper end surface of the base, and an involute guide groove corresponding to the involute conductor is provided on the moving guide plate, and the circumferential number of the involute conductor and the involute guide groove is greater than one circle. When in use, a certain value of excitation voltage is loaded on the pin electrically connected to the inner side end of the involute conductor and the pin on the outer side, and the measuring current passes through the pin electrically connected to the inner side end of the involute conductor, the effective voltage dividing section on the involute conductor, the involute brush, the rotating beam, the rotating brush, the O-type conductor and the electrical The connected pins enter the control circuit board, so that when the rotating shaft drives the rotating beam to rotate one circle, the effective voltage divider section on the involute conductor will reflect different electrical signals according to the position angle of the rotating beam, realizing the 360° full-scale measurement function in the circumferential direction, overcoming the measurement dead zone problem of the existing C-type potential angle sensor; at the same time, through the structural design of the involute conductor, the accuracy and measurement range of the potential angle measurement can be significantly improved; it can be applicable to more complex application scenarios and working conditions, greatly improving the versatility, so that the involute single-turn full-scale potential angle sensor of the present invention has a wider application potential in mechanical engineering, automation control and other fields.

[0018] 2. The rotating shaft is axially limited inside the center hole of the base and the moving guide plate through the end cap located at the upper end and the retaining spring clamped inside the annular groove thereof. The installation method is simple, ensuring that the involute single-turn full-scale potentiometric angle sensor of the present invention can be smoothly prepared and implemented.

[0019] 3. The contact on the lower side of the rotary brush directly passes through the center hole on the moving guide plate and contacts with the O-type conductor. The structural design is ingenious and reasonable, avoiding the need to provide an annular groove on the moving guide plate, thereby ensuring the integrity of the moving guide plate and contributing to improving the convenience and efficiency of assembling the involute single-turn full-scale potentiometric angle sensor of the present invention.

[0020] 4. The base is an injection molded part, the O-type conductor and the involute conductor are screen-printed on the upper end surface of the base, and the moving guide plate is secondary injection molded on the base. The assembly method of the base, the O-type conductor, the involute conductor and the moving guide plate is simple, ensuring the high efficiency of the involute single-turn full-scale potentiometric angle sensor of the present invention during production and processing.

[0021] 5. The structural design of the rotary brush and the involute brush is ingenious and reasonable. Both are designed as elastic ring structures with an opening on one side, and the involute brush is installed in the end of the rotating beam to naturally form a sliding connection, avoiding the need for additional design of a sliding connection structure between the involute brush and the rotating beam, ensuring the convenience and efficiency of the installation of the rotary brush and the involute brush at the end of the rotating beam.

[0022] 6. The rotary brush and involute brush are both made of beryllium copper. Beryllium copper itself has good fatigue resistance and is suitable for environments that require frequent bending or vibration. The brushes made of beryllium copper with an elastic structure greatly improve the service life of the involute single-turn full-scale potentiometric angle sensor of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an involute single-turn full-scale potential angle sensor of the present invention;

[0024] Figure 2 It is a schematic diagram of the exploded structure of an involute type single-turn full-scale potential angle sensor of the present invention;

[0025] Figure 3 It is a schematic diagram of the assembly structure of the O-type conductor and the involute conductor on the base;

[0026] Figure 4 It is a longitudinal cross-sectional view of an involute type single-turn full-scale potential angle sensor of the present invention along the direction perpendicular to the rotating beam at the center line of the rotating shaft;

[0027] Figure 5 It is a longitudinal cross-sectional view of an involute type single-turn full-scale potential angle sensor of the present invention along the axial line position of a rotating beam;

[0028] Figure 6 It is a three-dimensional structural diagram of the rotary brush;

[0029] Figure 7 It is a diagram showing the coordination relationship between a rotating beam on an involute type single-turn full-scale potential angle sensor of the present invention and a conductive body when the rotating beam is at a 0° extreme position;

[0030] Figure 8 It is a diagram of the coordination relationship between a rotating beam of an involute type single-turn full-scale potential angle sensor of the present invention and a conductor when the rotating beam is at a 180° position;

[0031] Fig. 9 The present invention is a diagram showing the matching relationship between a rotating beam of an involute type single-turn full-scale potential angle sensor and a conductor when the rotating beam is at a 360° extreme position.

[0032] In the figure: 1, rotating shaft; 2, moving guide plate; 3, rotating beam; 4, rotating brush; 5, involute brush; 6, O-type conductor; 7, involute conductor; 8, base; 9, pin; 1a, end cap; 1b, annular groove; 1c, through hole; 1d, retaining spring; 1e, anti-rotation surface; 2a, involute guide groove; 4a, contact one; 5a, contact two; 7a, effective voltage dividing section; 8a, annular boss; 8b, annular step groove; 8c, positioning column; 9a, pin one; 9b, pin two; 9c, pin three. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0034] Example

[0035] like Figures 1 to 6 As shown, the present invention is an involute single-turn full-scale potential angle sensor, comprising a rotating shaft 1, a moving guide plate 2 and a base 8, wherein an O-type conductor 6 and an involute conductor 7 are fixedly arranged on the upper end surface of the base 8, wherein the involute conductor 7 is located on the inner side of the O-type conductor 6 or surrounds the outer side of the O-type conductor 6, wherein the moving guide plate 2 is fixedly arranged on the upper end surface of the base 8, wherein an involute guide groove 2a corresponding to the involute conductor 7 is arranged on the moving guide plate 2, and the circumferential number of the involute conductor 7 and the involute guide groove 2a are both greater than one circle, wherein the base 8 and the moving guide plate 2 are correspondingly provided with a center hole penetrating the O-type conductor 6 and the involute conductor 7, wherein the rotating shaft 1 rotates It is connected to the base 8 and the center hole on the moving guide plate 2, and the upper end of the rotating shaft 1 is provided with a through hole 1c located in the horizontal direction. The rotating beam 3 located on the upper end surface of the moving guide plate 2 is fixedly provided inside the through hole 1c. A rotary brush 4 is fixedly provided at one end of the rotating beam 3, and an involute brush 5 capable of sliding along the length direction of the rotating beam 3 is provided at the other end. A contact 1 4a located at the lower side of the rotary brush 4 passes through the moving guide plate 2 and contacts with the O-type conductor 6, and a contact 2 5a located at the lower side of the involute brush 5 passes through the involute guide groove 2a on the moving guide plate 2 and contacts with the involute conductor 7. A plurality of pins 9 electrically connected to the two ends of the O-type conductor 6 and the involute conductor 7 are provided on the outer side of the base 8.

[0036] Preferably, an end cap 1a is provided at the upper end of the rotating shaft 1, and the outer peripheral edge of the end cap 1a extends outside the outer peripheral side surface of the rotating shaft 1, an annular groove 1b is provided on the outer side surface of the rotating shaft 1, and the upper end surface of the base 8 is provided with an annular boss 8a coaxially surrounding the outer peripheral side of its center hole, and the O-type conductor 6 and the involute conductor 7 are both coaxially surrounding the outer peripheral side of the annular boss 8a, the annular boss 8a and the upper end surface of the base 8 located on the inner side thereof are combined to form an annular step groove 8b, when the rotating shaft 1 is passed through the center hole on the base 8 and the motion guide plate 2, the lower end of the outer peripheral edge of the end cap 1a is embedded in the annular step groove 8b, the annular groove 1b on the rotating shaft 1 is correspondingly located below the base 8, and a retaining spring 1d is installed inside the annular groove 1b to limit the rotating shaft 1 to the center hole on the base 8 and the motion guide plate 2.

[0037] Further preferably, the inner diameter of the center hole on the moving guide plate 2 is larger than the inner diameter of the center hole on the base 8, and the involute conductor 7 surrounds the outside of the O-type conductor 6, and the contact 4a located on the lower side of the rotating brush 4 passes through the center hole on the moving guide plate 2 and contacts the O-type conductor 6.

[0038] Preferably, the pins 9 include a pin 1 9a electrically connected to the inner end of the involute conductor 7, a pin 3 9c electrically connected to the outer end of the involute conductor 7, and a pin 2 9b electrically connected to the O-type conductor 6.

[0039] Further preferably, the pin one 9 a, the pin two 9 b and the pin three 9 c are all located on the same side of the base 8 .

[0040] Preferably, the base 8 is an injection-molded part, the O-shaped conductor 6 and the involute conductor 7 are both screen-printed on the upper end surface of the base 8 , and the moving guide plate 2 is secondary-injection-molded on the base 8 .

[0041] Further preferably, the rotary brush 4 and the involute brush 5 are both open ring structures, and a pair of arc legs bent outward are correspondingly provided on the two side surfaces of the opening, and the convex arc side of the arc legs faces downward, the pair of arc legs on the rotary brush 4 constitute the contact 1 4a, and the pair of arc legs on the involute brush 5 constitute the contact 2 5a, the rotary brush 4 is sleeved and fixedly arranged on one end of the rotating beam 3, and the involute brush 5 is slidably sleeved on the other end of the rotating beam 3. Specifically, the rotary brush can be sleeved and fixedly installed on one end of the rotating beam by interference fit, gluing, etc.

[0042] Further preferably, the rotary brush 4 and the involute brush 5 are both made of beryllium copper.

[0043] Further preferably, the lower end of the rotating shaft 1 is provided with a rotation-stopping surface 1e located below the annular groove 1b.

[0044] Further preferably, a plurality of positioning columns 8c are provided on the lower end surface of the base 8 .

[0045] The working principle of the involute single-turn full-scale potential angle sensor of the present invention is as follows:

[0046] like Figure 7 As shown, the rotating beam 3 on the involute single-turn full-scale potential angle sensor of the present invention is in the 0° limit position, which is the initial state position. At this time, the contact 2 5a on the involute brush 5 abuts against the inner end of the involute guide groove 2a, and the length of the effective voltage-dividing section 7a on the involute conductor 7 is 0; when in use, a certain value of excitation is loaded on the pin 1 9a electrically connected to the inner end of the involute conductor 7 and the pin 3 9c electrically connected to the outer end of the involute conductor 7. The excitation voltage is applied, and the current sequentially enters the control circuit board through the pin 1 9a, the effective voltage-dividing section 7a on the involute conductor 7, the involute brush 5 and the contact 2 5a, the rotating beam 3, the rotary brush 4 and the contact 1 4a, the O-type conductor 6, and the pin 2 9b; during the rotation of the shaft 1, the circumferential rotation angle of the rotating beam 3 gradually increases, and the length of the effective voltage-dividing section 7a on the involute conductor 7 gradually increases. The matching relationship between the rotating beam 3 and the conductor when it is at the 180° position is shown in the attached figure. Figure 8 When the rotating shaft 1 rotates one circle and the rotating beam 3 is at the 360° limit position, the matching relationship between the rotating shaft 1 and the conductor is shown in the attached Fig. 9 At this time, the contact 2 5a on the involute brush 5 abuts against the outer end of the involute conductor 7, and the length of the effective voltage dividing section 7a on the involute conductor 7 is just 360° around a circle, realizing 360° full-scale measurement of the potential angle sensor.

[0047] The involute single-turn full-scale potential angle sensor of the present invention is characterized in that an O-type conductor and an involute conductor arranged in a corresponding sleeve are provided on the upper end surface of a base, an involute guide groove corresponding to the involute conductor is provided on a moving guide plate, and the circumferential number of turns of the involute conductor and the involute guide groove is greater than one turn. When in use, an excitation voltage of a certain value is loaded on the pin electrically connected to the inner side end of the involute conductor and the pin on the outer side, and the measuring current passes through the pin electrically connected to the inner side end of the involute conductor, the effective voltage dividing section on the involute conductor, the involute brush, the rotating beam, the rotating brush, the O-type conductor and the O-type conductor electrically connected The connected pins enter the control circuit board, so that when the rotating shaft drives the rotating beam to rotate one circle, the effective voltage divider section on the involute conductor will reflect different electrical signals according to the position angle of the rotating beam, realizing the 360° full-scale measurement function in the circumferential direction, overcoming the measurement dead zone problem of the existing C-type potential angle sensor; at the same time, through the structural design of the involute conductor, the accuracy and measurement range of the potential angle measurement can be significantly improved; it can be applicable to more complex application scenarios and working conditions, greatly improving the versatility, so that the involute single-turn full-scale potential angle sensor of the present invention has a wider application potential in mechanical engineering, automation control and other fields.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An involute single-turn full-scale potentiometric angle sensor, characterized in that: The invention comprises a rotating shaft (1), a moving guide plate (2) and a base (8); an O-shaped conductor (6) and an involute conductor (7) are fixedly arranged on the upper end surface of the base (8); the involute conductor (7) is located on the inner side of the O-shaped conductor (6) or surrounds the outer side of the O-shaped conductor (6); the moving guide plate (2) is fixedly arranged on the upper end surface of the base (8); an involute guide groove (2a) corresponding to the involute conductor (7) is arranged on the moving guide plate (2); the circumferential number of the involute conductor (7) and the involute guide groove (2a) is greater than one circle; the base (8) and the moving guide plate (2) are correspondingly provided with a central hole penetrating the O-shaped conductor (6) and the involute conductor (7); the rotating shaft (1) is rotatably connected to the base (8) and the moving guide plate (2) The rotating shaft (1) is provided with a through hole (1c) in the horizontal direction at the upper end of the rotating shaft (1), a rotating beam (3) located on the upper end surface of the moving guide plate (2) is fixedly provided inside the through hole (1c), a rotating brush (4) is fixedly provided at one end of the rotating beam (3), and an involute brush (5) capable of sliding along the length direction of the rotating beam (3) is provided at the other end, a contact point 1 (4a) located at the lower side of the rotating brush (4) passes through the moving guide plate (2) and contacts with an O-type conductor (6), a contact point 2 (5a) located at the lower side of the involute brush (5) passes through an involute guide groove (2a) on the moving guide plate (2) and contacts with an involute conductor (7), and a plurality of pins (9) electrically connected to the two ends of the O-type conductor (6) and the involute conductor (7) are provided on the outer side of the base (8).

2. The involute single-turn full-scale potentiometric angle sensor according to claim 1, characterized in that: The upper end of the rotating shaft (1) is provided with an end cap (1a), and the outer peripheral edge of the end cap (1a) extends outside the outer peripheral side of the rotating shaft (1), the outer side surface of the rotating shaft (1) is provided with an annular groove (1b), the upper end surface of the base (8) is provided with an annular boss (8a) coaxially surrounding the outer peripheral side of its center hole, and the O-shaped conductor (6) and the involute conductor (7) are coaxially surrounding the outer peripheral side of the annular boss (8a), and the annular boss (8a) and the inner side thereof are provided with an annular boss (8a) coaxially surrounding the outer peripheral side of the annular boss (8a). The upper end surface of the base (8) is enclosed to form an annular step groove (8b). When the rotating shaft (1) is connected to the center holes on the base (8) and the moving guide plate (2), the lower end of the outer peripheral edge of the end cap (1a) is embedded in the annular step groove (8b). The annular groove (1b) on the rotating shaft (1) is correspondingly located below the base (8), and a retaining spring (1d) is installed inside the annular groove (1b) to limit the rotating shaft (1) to the center holes on the base (8) and the moving guide plate (2).

3. The involute single-turn full-scale potentiometric angle sensor according to claim 2, characterized in that: The inner diameter of the center hole on the moving guide plate (2) is larger than the inner diameter of the center hole on the base (8), and the involute conductor (7) surrounds the outer side of the O-type conductor (6), and the contact point (4a) located on the lower side of the rotating brush (4) passes through the center hole on the moving guide plate (2) and contacts with the O-type conductor (6).

4. The involute single-turn full-scale potentiometric angle sensor according to claim 1, characterized in that: The pins (9) include a pin one (9a) electrically connected to the inner end of the involute conductor (7), a pin three (9c) electrically connected to the outer end of the involute conductor (7), and a pin two (9b) electrically connected to the O-type conductor (6).

5. The involute single-turn full-scale potentiometric angle sensor according to claim 4, characterized in that: The pin one (9a), the pin two (9b) and the pin three (9c) are all located on the same side of the base (8).

6. The involute single-turn full-scale potentiometric angle sensor according to claim 1, characterized in that: The base (8) is an injection molded part, the O-type conductor (6) and the involute conductor (7) are both screen-printed on the upper end surface of the base (8), and the moving guide plate (2) is secondary injection molded on the base (8).

7. The involute single-turn full-scale potentiometric angle sensor according to any one of claims 1 to 6, characterized in that: The rotary brush (4) and the involute brush (5) are both open ring structures, and a pair of arc-shaped legs bent outward are correspondingly provided on the two side surfaces of the opening, and the convex arc side of the arc-shaped legs faces downward. The pair of arc-shaped legs located on the rotary brush (4) constitute the contact point 1 (4a), and the pair of arc-shaped legs located on the involute brush (5) constitute the contact point 2 (5a). The rotary brush (4) is sleeved and fixedly arranged on one end of the rotating beam (3), and the involute brush (5) is slidably sleeved on the other end of the rotating beam (3).

8. The involute single-turn full-scale potentiometric angle sensor according to claim 7, characterized in that: The rotary brush (4) and the involute brush (5) are both made of beryllium copper.

9. The involute single-turn full-scale potentiometric angle sensor according to claim 8, characterized in that: The lower end of the rotating shaft (1) is provided with a rotation-stopping surface (1e) located below the annular groove (1b).

10. The involute single-turn full-scale potentiometric angle sensor according to claim 9, characterized in that: The lower end surface of the base (8) is provided with a plurality of positioning columns (8c).

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