Bidirectional encoder

Abstract

The utility model discloses a bidirectional encoder, which is characterized by comprising a sensing stator, a fixing part, a first sensing rotor and a second sensing rotor, one surface of the sensing stator is provided with the fixing part, the fixing part is annularly arranged, and the inner wall of the fixing part is provided with a plurality of first coils; the first sensing rotor can rotate relative to the fixed part and is provided with a plurality of first conductors along the circumference so as to be matched with the first coil; a plurality of second coils are arranged on the other surface of the sensing stator; and the second sensing rotor can rotate relative to the fixed part, and a plurality of second conductors are arranged on the surface of the second sensing rotor so as to be matched with the second coil. Through application of the bidirectional encoder provided by the utility model, two sides of the sensing stator are provided with inductors, one side is provided with a radial inductor, and the other side is provided with an axial inductor, so that two paths of feedback signals can be output, errors can be compensated, and safety redundancy can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of encoders and related fields, and in particular to a bidirectional encoder. Background Technology

[0002] Encoders are among the most commonly used detection devices in various types of machinery. Using encoders for signal detection is widely applied in industrial automation fields such as CNC machine tools, textile machinery, metallurgical machinery, petroleum machinery, mining machinery, printing and packaging machinery, plastics machinery, testing machines, elevators, servo motors, aerospace, and instrumentation. There are many types of encoders, and different industry users have varying requirements for encoder parameters and specifications.

[0003] However, most encoders currently on the market are single-sided sensing types, which can only be used to output a single feedback signal. Furthermore, single-sided sensing can only output either radial inductance or axial inductance. Utility Model Content

[0004] In view of this, and to solve the above problems, the purpose of this utility model is to provide a bidirectional encoder, characterized in that it includes:

[0005] Sensing stator, fixed part, first sensing rotor, second sensing rotor;

[0006] The fixing part is mounted on one surface of the sensing stator. The fixing part is arranged in a ring shape, and a plurality of first coils are provided on the inner wall of the fixing part.

[0007] The first sensing rotor is rotatable relative to the fixed part and has a plurality of first conductors arranged along the circumference to cooperate with the first coil.

[0008] The other surface of the sensing stator is provided with several second coils;

[0009] The second sensing rotor is rotatable relative to the fixed part, and the surface of the second sensing rotor is provided with a plurality of second conductors to cooperate with the second coil.

[0010] The bidirectional encoder described above is characterized in that the first sensing rotor is arranged in a ring.

[0011] The aforementioned bidirectional encoder is characterized in that a plurality of the first conductor arrays are disposed on the outer wall of the first sensing rotor.

[0012] The aforementioned bidirectional encoder is characterized in that the first sensing rotor has a plurality of first mounting holes.

[0013] The aforementioned bidirectional encoder is characterized in that the first sensing rotor is mounted on an external rotating shaft through the first mounting hole and the first fixing member.

[0014] The aforementioned bidirectional encoder is characterized in that a plurality of second conductor arrays are disposed at the edge of the surface of the second sensing rotor.

[0015] The bidirectional encoder described above is characterized in that the second conductor is mounted on an external rotating shaft via a mounting portion.

[0016] The aforementioned bidirectional encoder is characterized in that the mounting portion includes: a first annular portion and a second annular portion; the first annular portion is mounted on the second annular portion, the second sensing rotor is provided with a central hole, the first annular portion is mounted on the central hole, the second annular portion is provided with a plurality of second mounting holes in the circumferential direction, and the second annular portion is mounted on the external rotating shaft through the second mounting holes and the second fixing member.

[0017] The aforementioned bidirectional encoding is characterized in that the sensing stator has a plane and a notch at both ends along the first direction.

[0018] The aforementioned bidirectional encoding is characterized in that the sensing stator has a groove at each end along the second direction, and the first direction and the second direction are perpendicular.

[0019] The positive effects of the above technical solution compared with the existing technology are:

[0020] By applying this utility model, a bidirectional encoder is provided. The sensing stator of this device has inductance on both sides, with one side being radial inductance and the other side being axial inductance. It can output dual-channel feedback signals to compensate for errors and improve safety redundancy. Attached Figure Description

[0021] Fig. 1 This is an exploded view of a bidirectional encoder according to this utility model.

[0022] Fig. 2 This is a side view of a bidirectional encoder according to the present invention.

[0023] Fig. 3 This is a schematic diagram of the first angle of a bidirectional encoder according to the present invention.

[0024] Fig. 4 This is a schematic diagram of the second angle of a bidirectional encoder according to the present invention.

[0025] 1. Sensing stator; 2. Fixing part; 3. First coil; 4. First sensing rotor; 5. First conductor; 6. Second sensing rotor; 7. Second conductor; 8. First mounting hole; 9. First fixing member; 10. Mounting part; 11. First annular part; 12. Second annular part; 13. Groove; 14. Plane; 15. Notch; 16. Second mounting hole; 17. Second fixing member. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0027] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0028] like Figs. 1 to 4 As shown, a preferred embodiment of a bidirectional encoder is presented, characterized in that it includes: a sensing stator 1, a fixing part 2, a first sensing rotor 4, and a second sensing rotor 6.

[0029] A fixing part 2 is mounted on one surface of the sensing stator 1. The fixing part 2 is arranged in a ring shape, and a plurality of first coils 3 are provided on the inner wall of the fixing part 2. The first sensing rotor 4 can rotate relative to the fixing part 2 and a plurality of first conductors 5 are arranged along the circumference to cooperate with the first coils 3. A plurality of second coils are provided on the other surface of the sensing stator 1. The second sensing rotor 6 can rotate relative to the fixing part 2, and a plurality of second conductors 7 are provided on the surface of the second sensing rotor 6 to cooperate with the second coils.

[0030] In practical use, axial inductance and radial inductance are simply relative relationships between the sensing coil and the rotor. When the coil is on a horizontal plane, it is axial inductance; when the coil is positioned along the Z-axis, it is radial inductance. A fixing part 2 is fixedly mounted on the upper end of the sensing stator 1. A first coil 3 is mounted on the inner wall of the fixing part 2. The rotation of the first sensing rotor 4 drives the first conductor 5 to rotate, generating an alternating eddy current magnetic field. This changes the magnetic flux of the first coil 3, thus generating a voltage signal and achieving radial inductance. A second coil is located at the lower end of the sensing stator 1. The rotation of the second sensing rotor 6 drives the second conductor 7 to rotate, generating an alternating eddy current magnetic field. This changes the magnetic flux of the second coil, thus generating a voltage signal and achieving axial inductance. Both sides of the sensing stator 1 in this device can move, generating different inductances. Furthermore, the radial inductance in this device is achieved with the sensing source on the inner side and the inductance coil on the outer side.

[0031] Based on the above, this utility model also has the following embodiments:

[0032] Furthermore, a bidirectional encoder is characterized in that the first sensing rotor 4 is arranged in a ring.

[0033] Furthermore, a bidirectional encoder is characterized in that a plurality of first conductors 5 are arrayed on the outer wall of the first sensing rotor 4.

[0034] Furthermore, a bidirectional encoder is characterized in that a plurality of first mounting holes 8 are provided on the first sensing rotor 4.

[0035] Furthermore, a bidirectional encoder is characterized in that a first sensing rotor 4 is mounted on an external rotating shaft via a first mounting hole 8 and a first fixing member 9. Specifically, the external rotating shaft is mounted on the first sensing rotor 4, thereby driving the first sensing rotor 4 to rotate.

[0036] Furthermore, a bidirectional encoder is characterized in that a plurality of second conductors 7 are arrayed on the edge of the surface of the second sensing rotor 6.

[0037] Furthermore, a bidirectional encoder is characterized in that the second conductor 7 is mounted on an external rotating shaft via a mounting portion 10.

[0038] Furthermore, a bidirectional encoder is characterized in that the mounting portion 10 includes: a first annular portion 11 and a second annular portion 12; the first annular portion 11 is mounted on the second annular portion 12, a central hole is provided on the second sensing rotor 6, the first annular portion 11 is mounted in the central hole, and the second annular portion 12 is provided with a plurality of second mounting holes 16 circumferentially, the second annular portion 12 being mounted on an external rotating shaft through the second mounting holes 16 and a second fixing member 17. Specifically, when the external rotating shaft rotates, the second sensing rotor 6 is driven to rotate through the second arc-shaped portion 12 and the first annular portion 11, thereby driving the second conductor 7 to rotate. Furthermore, both the first fixing member 9 and the second fixing member 17 can be screws or the like.

[0039] Furthermore, a bidirectional encoding method is characterized in that the sensing stator 1 has a plane 14 and a notch 15 at both ends along the first direction.

[0040] Furthermore, a bidirectional encoding method is characterized in that the sensing stator 1 has a groove 13 at each end along the second direction, and the first and second directions are perpendicular. Specifically, the arrangement of the plane 14, the groove 13, and the notch 15 can be determined according to the actual usage.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

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