Novel high polymer material pulse counting sensor

Abstract

The utility model discloses a novel high polymer material pulse counting sensor, which comprises a shell, a high polymer material pulse code disc, a rotating shaft and an electric brush mechanism, a microcircuit module assembly and a sliding wire are arranged in the shell; the high polymer material pulse code disc is arranged on the inner wall of the shell; a grid ring is coaxially mounted at the edge of the high polymer material pulse code disc; the rotating shaft is rotationally connected in the shell, and a slip ring lapped with the slip wire is mounted on the rotating shaft; the electric brush mechanism comprises a single electric brush assembly and a U-shaped electric brush assembly; the single electric brush assembly and the U-shaped electric brush assembly are both installed on the rotating shaft and are both in contact with the grid teeth. According to the utility model, two groups of pulse signals can be simultaneously transmitted to the microcircuit module assembly of the sensor as pulse counting signals, the phase difference of the two groups of signals is used as a direction discrimination signal, the rotation direction of an execution mechanism can be determined, and inaccurate test signals caused by the structural difference of double pulse code discs are avoided. And the precision, the reliability and the anti-interference capability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a novel polymer material pulse counting sensor. Background Art

[0002] The polymer conductive material rotation pulse counting sensor products have been initially applied to intelligent electric actuators in the field of industrial automation. They are mainly used to feedback the position information and rotation direction of the actuator and are important sensing components of the intelligent electric actuator.

[0003] The core component of the existing polymer conductive material rotation pulse counting sensor is a dual-pulse code disk structure made of polymer material. Through the sliding of the brushes on each code disk, two sets of pulse signals are generated to sense the position and rotation direction of the actuator. In order to ensure the consistency of the two sets of pulse signals, not only the physical characteristics of the two code disks are required to be consistent, but also their electrical characteristics are required to have high consistency. Due to the influence of human factors such as the proportion of conductive slurry, spraying time, pressing environment, batches, etc. in the production process of the pulse code disk, the cost of screening and pairing is high, and it is difficult to obtain two completely consistent code disks. In addition, the phase of the two sets of pulse output signals of the existing polymer conductive material rotation pulse counting sensor is adjusted by manually changing the relative position of the brushes on the two sets of code disks, which also brings uncertainty to the sensor signal output.

[0004] Therefore, a new polymer material pulse counting sensor is proposed. Utility Model Content

[0005] The utility model aims to provide a novel polymer material pulse counting sensor, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above purpose, the utility model provides the following solution: The utility model provides a new polymer material pulse counting sensor, including:

[0007] A housing, wherein the microcircuit module assembly and the sliding wire are installed in the housing;

[0008] A polymer material pulse code disk, the polymer material pulse code disk is mounted on the inner wall of the housing; a gate ring is coaxially mounted at the edge of the polymer material pulse code disk, the gate ring is provided with a plurality of equally spaced gate teeth and a plurality of equally spaced tooth grooves, the tooth grooves having the same width as the gate teeth;

[0009] A rotating shaft, the rotating shaft is rotatably connected in the housing, and a slip ring overlapped with the sliding wire is installed on the rotating shaft;

[0010] A brush mechanism, the brush mechanism comprising a single brush assembly and a U-shaped brush assembly; the single brush assembly and the U-shaped brush assembly are both mounted on the rotating shaft and are in contact with the grid teeth;

[0011] Wherein, the single brush assembly and the U-shaped brush assembly are both electrically connected to the microcircuit module assembly; the two diameter lines of the gate ring are respectively the DI diameter line and the D2 diameter line, the DI diameter line passes through the contact point of the single brush assembly on the gate ring, and the D2 diameter line passes through the contact point of the U-shaped brush assembly on the gate ring, the angle between the DI diameter line and the D2 diameter line is set to φ, the angle α is set to the degree of the arc between the tooth profiles on the same side of two adjacent gate teeth, and the angle φ is 1 / 4 times the angle α.

[0012] According to a novel polymer material pulse counting sensor provided by the utility model, a middle guide ring is coaxially installed at the inner edge of the polymer material pulse code disk, and two ends of the brush target of the U-shaped brush assembly are respectively bridged with the middle guide ring and the grid teeth.

[0013] According to a novel polymer material pulse counting sensor provided by the utility model, the U-shaped brush assembly includes a first brush and a second brush, the first brush and the second brush are both installed on the rotating shaft through a current collecting arm, the first brush is bridged with the middle guide ring, and the second brush is bridged with the gate teeth; the first brush and the second brush are both electrically connected to the microcircuit module assembly; the D2 diameter line passes through the second brush at the contact point of the gate ring.

[0014] According to a novel polymer material pulse counting sensor provided by the utility model, the single brush assembly includes a collector ring installed on the rotating shaft, a single brush body is installed on the collector ring, the single brush body is bridged with the gate teeth, and the single brush body is electrically connected to the microcircuit module assembly; the DI diameter line passes through the single brush body at the contact point of the gate ring.

[0015] According to a novel polymer material pulse counting sensor provided by the utility model, both ends of the rotating shaft are rotatably connected in the housing through a first bearing and a second bearing respectively.

[0016] According to a novel polymer material pulse counting sensor provided by the utility model, the number of the grid teeth is 24.

[0017] According to a novel polymer material pulse counting sensor provided by the utility model, a first retaining ring and a second retaining ring are installed on the rotating shaft, and the current collecting arm and the current collecting ring are both located between the first retaining ring and the second retaining ring.

[0018] According to a novel polymer material pulse counting sensor provided by the utility model, the housing includes a shell, and the two ends of the shell are detachably connected with a shell cover and a circuit cover plate, the microcircuit module assembly and the sliding wire are both installed on the shell, and the microcircuit module assembly is provided with a lead-out component, and the lead-out component extends out of the circuit cover plate;

[0019] The first bearing is mounted on the inner wall of the housing, and the second bearing is mounted on the circuit cover.

[0020] According to a new polymer material pulse counting sensor provided by the utility model, a first wire lead-out hole, a second wire lead-out hole and a third wire lead-out hole are provided on the polymer material pulse code disk, lead-out wires are passed through the end surface of the shell, and the single brush body, the first brush and the second brush are electrically connected to the microcircuit module assembly through the lead-out wires.

[0021] The utility model discloses the following technical effects:

[0022] In the utility model, the angle φ is 1 / 4 of the angle α, so that a polymer material pulse code disk can simultaneously generate two groups of pulse digital signals with a phase difference of 90°; the sliding of three moving contact brushes of a single brush assembly and a U-shaped brush assembly on a polymer material pulse code disk generates two groups of pulse signals, and the two groups of pulse signals are simultaneously transmitted to the microcircuit module assembly of the sensor as pulse counting signals, and the phase difference of the two groups of signals, as a direction discrimination signal, can determine the rotation direction of the actuator;

[0023] The utility model adopts a polymer material pulse code disk, and is configured with a combined brush mechanism formed by a single brush assembly and a U-shaped brush assembly, which fully solves the problem of poor consistency between the two code disks and uncertainty in manual phase adjustment, avoids inaccurate test signals due to structural differences in the double pulse code disks, and effectively improves test accuracy;

[0024] The utility model has the advantages of simple and firm structure, flexible and convenient installation, high reliability, high precision, strong anti-interference ability and long service life. It directly outputs digital signals to meet the needs of modern industrial feedback actuator position information and rotation direction and equipment that requires position control. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is an exploded view of the utility model;

[0027] Figure 2 It is an axonometric drawing of the utility model;

[0028] Figure 3 It is a schematic diagram of the structure of the polymer material pulse code disk in the utility model.

[0029] Among them, 1. shell cover; 2. rotating shaft; 3. first bearing; 4. first retaining ring; 5. first brush; 6. single brush body; 7. second brush; 8. second retaining ring; 9. polymer material pulse code disk; 10. first wire lead-out hole; 11. second wire lead-out hole; 12. second bearing; 13. third wire lead-out hole; 14. sliding wire; 15. shell; 16. wire; 17. microcircuit module assembly; 18. lead-out component; 19. circuit cover. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 3 The utility model provides a novel polymer material pulse counting sensor, comprising:

[0033] A housing, in which a microcircuit module assembly 17 and a sliding wire 14 are installed;

[0034] A polymer material pulse code disk 9 is mounted on the inner wall of the housing; a gate ring is coaxially mounted at the edge of the polymer material pulse code disk 9, and a plurality of equally spaced gate teeth and a plurality of equally spaced tooth grooves are provided on the gate ring, and the width of the tooth groove is the same as that of the gate tooth, so as to obtain a pulse waveform with a duty cycle of 50%;

[0035] A rotating shaft 2 is rotatably connected in the housing, and a slip ring overlapped with the sliding wire 14 is installed on the rotating shaft 2;

[0036] A brush mechanism, the brush mechanism includes a single brush assembly and a U-shaped brush assembly; the single brush assembly and the U-shaped brush assembly are both mounted on the rotating shaft 2 and are in contact with the grid teeth;

[0037] Among them, the single brush assembly and the U-shaped brush assembly are both electrically connected to the microcircuit module assembly 17; the two diameter lines of the gate ring are the DI diameter line and the D2 diameter line, the DI diameter line passes through the contact point of the single brush assembly on the gate ring, and the D2 diameter line passes through the contact point of the U-shaped brush assembly on the gate ring, and the angle between the DI diameter line and the D2 diameter line is set to φ, and the angle α is set to be the degree of the arc between the tooth profiles on the same side of two adjacent gate teeth, and the angle φ is 1 / 4 times the angle α, so as to obtain two groups of pulse signals with a phase difference of 90°; the pulse signal transmits the counting signal through the shaping and conditioning circuit board and the anti-reverse plug-in six-pin connection socket;

[0038] With such arrangement, the utility model generates and transmits pulse signals based on the relative movement between the polymer material pulse code disk 9 and the brush mechanism, which are used for applications such as position detection, counting or direction determination. The sensor contacts and separates with the grating teeth on the polymer material pulse code disk 9 through the brush mechanism, generates electrical signals, and is processed by the microcircuit module assembly 17 to output as digital signals;

[0039] In the utility model, the angle φ is 1 / 4 of the angle α, so that a polymer material pulse code disk 9 can simultaneously generate two groups of pulse digital signals with a phase difference of 90°; the sliding of three moving contact brushes of a single brush assembly and a U-shaped brush assembly on a polymer material pulse code disk 9 generates two groups of pulse signals, and the two groups of pulse signals are simultaneously transmitted to the microcircuit module assembly 17 of the sensor as pulse counting signals, and the phase difference of the two groups of signals, as a direction discrimination signal, can determine the rotation direction of the actuator;

[0040] The utility model adopts a polymer material pulse code disk 9, and is configured with a combined brush mechanism formed by a single brush assembly and a U-shaped brush assembly, which fully solves the problem of poor consistency between the two code disks and uncertainty in manual phase adjustment, avoids inaccurate test signals due to structural differences in the double pulse code disks, and effectively improves the test accuracy;

[0041] The utility model has the advantages of simple and firm structure, flexible and convenient installation, high reliability, high precision, strong anti-interference ability and long service life. It directly outputs digital signals to meet the needs of modern industrial feedback actuator position information and rotation direction and equipment that requires position control.

[0042] According to a further optimization scheme, a middle guide ring is coaxially installed at the inner edge of the polymer material pulse code disk 9, and both ends of the brush target of the U-shaped brush assembly are bridged with the middle guide ring and the grid teeth respectively.

[0043] A further optimized solution is that the U-shaped brush assembly includes a first brush 5 and a second brush 7, the first brush 5 and the second brush 7 are both installed on the rotating shaft 2 through a collecting arm, the first brush 5 is bridged with the middle guide ring, and the second brush 7 is bridged with the gate teeth; the first brush 5 and the second brush 7 are both electrically connected to the microcircuit module assembly 17; the D2 diameter line passes through the contact point of the second brush 7 on the gate ring.

[0044] Further optimized solution, the single brush assembly includes a collector ring installed on the rotating shaft 2, a single brush body 6 is installed on the collector ring, the single brush body 6 is bridged with the gate teeth, and the single brush body 6 is electrically connected to the microcircuit module assembly 17; the DI diameter line passes through the contact point of the single brush body 6 at the gate ring;

[0045] In the utility model, there is a phase difference between the signals generated by the single brush assembly and the U-shaped brush assembly of the two groups of brushes. By setting the angle φ to 1 / 4 times the angle α, the phase difference between the two groups of signals is made to 90°, which provides more information dimensions and contributes to more accurate position and direction detection.

[0046] According to a further optimized solution, both ends of the rotating shaft 2 are rotatably connected in the housing via a first bearing 3 and a second bearing 12 respectively.

[0047] According to the further optimization scheme, the number of grid teeth is 24. The utility model utilizes the characteristic that the polymer material matrix can manufacture the flat resistor track, sets the number and width of the grid teeth through the spray plate, and adopts a special secondary molding process to manufacture the pulse generating matrix. The mirror surface of the pulse generating body is designed with evenly distributed grid teeth, which changes the working mode of conventional traditional polymer material products, directly provides a digital signal of 24 pulses per 360°, and can achieve a digital signal of 48, 60, or 96 pulses per 360° according to design requirements.

[0048] To further optimize the solution, a first retaining ring 4 and a second retaining ring 8 are installed on the rotating shaft 2, the collector arm and the collector ring are located between the first retaining ring 4 and the second retaining ring 8, and the first retaining ring 4 and the second retaining ring 8 are used for limiting to ensure stable contact between the brush mechanism and the grid teeth.

[0049] According to a further optimized solution, the housing includes a housing 15, and the two ends of the housing 15 are detachably connected with a shell cover 1 and a circuit cover plate 19, respectively. The microcircuit module assembly 17 and the sliding wire 14 are both installed on the housing 15, and the microcircuit module assembly 17 is provided with an outlet component 18, which extends out of the circuit cover plate 19;

[0050] The first bearing 3 is mounted on the inner wall of the housing 15 , and the second bearing 12 is mounted on the circuit cover 19 .

[0051] A further optimized solution is that a first wire lead-out hole 10, a second wire lead-out hole 11 and a third wire lead-out hole 13 are provided on the polymer material pulse code disk 9, a lead-out wire 16 is passed through the end face of the shell 15, and the single brush body 6, the first brush 5 and the second brush 7 are electrically connected to the microcircuit module assembly 17 through the lead-out wire 16.

[0052] According to a further optimization scheme, an armature is installed in the housing 15, and the armature is respectively connected to the sliding wire 14 and the pulse generating gate ring and the middle guide ring on the surface of the polymer material pulse code disk 9 through three wires.

[0053] According to a further optimized solution, the first brush 5, the single brush body 6 and the second brush 7 are all made of palladium-iridium alloy material.

[0054] According to a further optimization scheme, the circuit cover 19 is provided with three mounting holes evenly spaced at 120°.

[0055] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technical users in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A novel polymer material pulse counting sensor, characterized in that: include: A housing, wherein a microcircuit module assembly (17) and a sliding wire (14) are installed in the housing; A polymer material pulse code disk (9), the polymer material pulse code disk (9) being mounted on the inner wall of the housing; a gate ring being coaxially mounted at the edge of the polymer material pulse code disk (9), the gate ring being provided with a plurality of equally spaced gate teeth and a plurality of equally spaced tooth grooves, the tooth grooves having the same width as the gate teeth; A rotating shaft (2), the rotating shaft (2) being rotatably connected in the housing, and a slip ring overlapped with the sliding wire (14) being installed on the rotating shaft (2); A brush mechanism, the brush mechanism comprising a single brush assembly and a U-shaped brush assembly; the single brush assembly and the U-shaped brush assembly are both mounted on the rotating shaft (2) and are in contact with the grid teeth; Wherein, the single brush assembly and the U-shaped brush assembly are both electrically connected to the microcircuit module assembly (17); the two diameter lines of the gate ring are the DI diameter line and the D2 diameter line, respectively; the DI diameter line passes through the contact point of the single brush assembly on the gate ring, and the D2 diameter line passes through the contact point of the U-shaped brush assembly on the gate ring; the angle between the DI diameter line and the D2 diameter line is set to φ; the angle α is set to be the degree of the arc between the tooth profiles on the same side of two adjacent gate teeth; the angle φ is 1 / 4 times the angle α.

2. The novel polymer material pulse counting sensor according to claim 1 is characterized in that: A middle guide ring is coaxially mounted on the inner edge of the polymer material pulse code disk (9), and two ends of the brush target of the U-shaped brush assembly are respectively bridged with the middle guide ring and the grid teeth.

3. The novel polymer material pulse counting sensor according to claim 2 is characterized in that: The U-shaped brush assembly comprises a first brush (5) and a second brush (7), the first brush (5) and the second brush (7) are both mounted on the rotating shaft (2) via a current collecting arm, the first brush (5) is bridged with the center guide ring, and the second brush (7) is bridged with the gate teeth; the first brush (5) and the second brush (7) are both electrically connected to the microcircuit module assembly (17); the D2 diameter line passes through the contact point of the second brush (7) on the gate ring.

4. The novel polymer material pulse counting sensor according to claim 3 is characterized in that: The single brush assembly comprises a collector ring mounted on the rotating shaft (2), a single brush body (6) mounted on the collector ring, the single brush body (6) being bridged with the gate teeth, the single brush body (6) being electrically connected with the microcircuit module assembly (17); the DI diameter line passes through the single brush body (6) at the contact point of the gate ring.

5. The novel polymer material pulse counting sensor according to claim 4 is characterized in that: The two ends of the rotating shaft (2) are rotatably connected in the housing via a first bearing (3) and a second bearing (12) respectively.

6. The novel polymer material pulse counting sensor according to claim 1 is characterized in that: The number of the grid teeth is 24.

7. The novel polymer material pulse counting sensor according to claim 4 is characterized in that: A first retaining ring (4) and a second retaining ring (8) are mounted on the rotating shaft (2), and the current collecting arm and the current collecting ring are both located between the first retaining ring (4) and the second retaining ring (8).

8. The novel polymer material pulse counting sensor according to claim 5 is characterized in that: The housing comprises a shell (15), two ends of the shell (15) are detachably connected to a shell cover (1) and a circuit cover plate (19), the microcircuit module assembly (17) and the sliding wire (14) are both mounted on the shell (15), the microcircuit module assembly (17) is provided with a lead-out component (18), and the lead-out component (18) extends out of the circuit cover plate (19); The first bearing (3) is mounted on the inner wall of the housing (15), and the second bearing (12) is mounted on the circuit cover (19).

9. The novel polymer material pulse counting sensor according to claim 8 is characterized in that: The polymer material pulse code disk (9) is provided with a first wire lead-out hole (10), a second wire lead-out hole (11) and a third wire lead-out hole (13); an end surface of the housing (15) is provided with a lead-out wire (16); the single brush body (6), the first brush (5) and the second brush (7) are electrically connected to the microcircuit module assembly (17) via the lead-out wire (16).

Images