Non-contact Hall incremental encoder

Abstract

The utility model relates to the technical field of electrical elements, and specifically discloses a non-contact Hall incremental encoder comprising an encoder pedestal; the Hall circuit board is arranged in the encoder base and is used for generating an electric signal according to a changing magnetic field; the rotating ring is rotationally mounted on the encoder base; and the multi-magnetic-pole assembly is installed on the rotating ring and is used for providing the variable magnetic field for the Hall circuit board when the multi-magnetic-pole assembly rotates along with the rotating ring. The non-contact Hall incremental encoder provided by the utility model can effectively solve the problems of unstable output signal, shorter service life, poorer waterproof performance and the like of the existing encoder.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical components, and particularly relates to a non-contact Hall incremental encoder. Background Art

[0002] Most of the existing Hall incremental encoders on the market use the method of a mechanical code disk plus a brush to achieve the incremental output of sine wave coding. The principle of this mechanical encoder is to output signals by using the contact of the brush when the code disk rotates. However, this method has the following problems:

[0003] ① In the way of friction contact conduction, it is easy to cause the brush to jump during rotation due to factors such as uneven friction surfaces, and then generate output noise, ultimately resulting in unstable output signals;

[0004] ② Long-term use will cause wear between the brush and the code disk, and then affect the service life;

[0005] ③ There is a need for rotational friction contact between the brush and the code disk, and it is impossible to directly seal the two with a sealant, so the waterproof performance is poor.

[0006] Therefore, it is necessary to improve the existing encoder to solve the problems of unstable output signals, short service life, and poor waterproof performance existing in it.

[0007] The above information disclosed in this background section is only included to enhance the understanding of the background of the present disclosure, and thus may include information that does not form the prior art already known to those of ordinary skill in the art at present. Summary of the Utility Model

[0008] An object of the utility model is to provide a non-contact Hall incremental encoder, which can effectively solve the problems of unstable output signals, short service life, and poor waterproof performance existing in the existing encoder.

[0009] To achieve the above object, the utility model provides a non-contact Hall incremental encoder, including:

[0010] An encoder base;

[0011] A Hall circuit board, which is installed in the encoder base and is used to generate electrical signals according to the changing magnetic field;

[0012] A rotating ring, which is rotatably installed on the encoder base;

[0013] A multi-pole component, which is installed on the rotating ring and is used to provide the changing magnetic field to the Hall circuit board when rotating with the rotating ring.

[0014] Optionally, the Hall circuit board includes a signal processing circuit;

[0015] The Hall circuit board further includes a power input pin electrically connected to the signal processing circuit, a group A of Hall elements, a group A of output pins provided corresponding to the group A of Hall elements, a group B of Hall elements, and a group B of output pins provided corresponding to the group B of Hall elements.

[0016] Optionally, the Hall circuit board further includes a ground pin electrically connected to the signal processing circuit.

[0017] Optionally, the multi-pole component includes a plurality of groups of magnet pairs, and each group of magnet pairs includes an S-pole magnet and an N-pole magnet.

[0018] Optionally, each of the magnet pairs is independently arranged with respect to each other.

[0019] Optionally, the circumferential surface of the rotating ring is provided with a plurality of arc-shaped grooves, and each magnet pair is mounted and fixed in one of the arc-shaped grooves.

[0020] Optionally, the magnet pairs are sequentially connected to form an annular structure.

[0021] Optionally, the rotating ring is provided with an annular groove for the multi-pole component of the annular structure to be snapped into.

[0022] Optionally, the surface of the Hall circuit board is provided with sealant.

[0023] The beneficial effects of the present utility model are as follows: A non-contact Hall incremental encoder is provided. When the rotating ring is twisted, the rotating ring drives the multi-pole component to rotate relative to the Hall circuit board mounted on the encoder base, thereby providing a changing magnetic field to the Hall circuit board. The Hall circuit board generates corresponding electrical signals according to the changing magnetic field, and thus can convert the rotational movement into corresponding electrical signals and output them.

[0024] In the above process:

[0025] ① The Hall circuit board and the multi-pole component do not need to be in direct contact, so there will be no situation where output noise is generated due to uneven friction surfaces, thereby ensuring the stability of the output signal;

[0026] ② The Hall circuit board and the multi-pole component do not need to rub against each other, so the problem of short service life caused by friction can be avoided;

[0027] ③ The Hall circuit does not need to be in direct contact with the multi-pole component, so sealant can be directly used to seal the Hall circuit board, thereby improving the waterproof performance.

[0028] Therefore, the non-contact Hall incremental encoder provided by the present utility model can effectively solve the problems existing in the existing encoders, such as unstable output signals, short service life, and poor waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 Structural schematic diagram of the non-contact Hall incremental encoder provided for the embodiment;

[0031] Figure 2 Schematic diagram of the phase difference between the A-C curve and the B-C curve provided for the embodiment.

[0032] In the figure:

[0033] 1. Encoder base;

[0034] 2. Hall circuit board; 201. Power input pin; 202. Group A output pin; 203. Group B output pin; 204. Ground pin; 205. Group A Hall element; 206. Group B Hall element;

[0035] 3. Rotating ring;

[0036] 4. Multi-pole component; 401. Magnet pair. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] When "embodiment" is mentioned in the present utility model, it means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present utility model. The term "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in the present utility model, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0038] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which the present utility model belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit the present utility model.

[0039] In the description of the present utility model, the term "and / or" is an expression for describing the logical relationship between objects, indicating that there can be three relationships. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this text generally represents an "or" logical relationship between the associated objects before and after.

[0040] In the present utility model, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary or sequential relationships between these entities or operations.

[0041] Without further limitation, in the present utility model, the expressions "comprising", "including", "having" or other similar expressions used in the statement are intended to cover non-exclusive inclusion. These expressions do not exclude that there may be additional elements in the process, method or product including the said elements, so that the process, method or product including a series of elements may not only include those defined elements, but also include other elements not explicitly listed, or also include elements inherent to this process, method or product.

[0042] Similar to the understanding in the "Examination Guidelines", in the present utility model, expressions such as "greater than", "less than", "exceeding" are understood as not including the number itself; expressions such as "above", "below", "within" are understood as including the number itself. In addition, in the description of the embodiments of the present utility model, the meaning of "a plurality of" is two or more (including two). Similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in this way unless otherwise specifically defined.

[0043] In the description of the embodiments of the present utility model, the spatially related expressions used, such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawing, and is only for the convenience of describing the specific embodiment of the present utility model or for the reader to understand, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present utility model.

[0044] Unless otherwise clearly specified or limited, in the description of the embodiments of the present utility model, terms such as "installation", "connection", "linkage", "fixation", and "setting" shall be understood in a broad sense. For example, the "connection" may be a fixed connection, a detachable connection, or an integral setting; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium; it may be the communication inside two components or the interaction relationship between two components. For those skilled in the technical field to which the present utility model belongs, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0045] The present utility model provides a non-contact Hall incremental encoder, which is applicable to the application scenarios of incremental encoders, and can effectively solve the problems existing in existing encoders, such as unstable output signals, short service life, and poor waterproof performance.

[0046] See Figure 1 , in this embodiment, the non-contact Hall incremental encoder includes an encoder base 1, a Hall circuit board 2, a rotating ring 3, and a multi-pole component 4. The Hall circuit board 2 is installed in the encoder base 1 and is used to generate electrical signals according to the changing magnetic field; the rotating ring 3 is rotatably installed on the encoder base 1; the multi-pole component 4 is installed on the rotating ring 3 and is used to provide the changing magnetic field to the Hall circuit board 2 when rotating with the rotating ring 3.

[0047] For the non-contact Hall incremental encoder provided in this embodiment, when the rotating ring 3 is twisted, the rotating ring 3 drives the multi-pole component 4 to rotate relative to the Hall circuit board 2 installed on the encoder base 1, and then provides a changing magnetic field to the Hall circuit board 2. The Hall circuit board 2 generates corresponding electrical signals according to the changing magnetic field, and can convert the rotation action into corresponding electrical signals and output them.

[0048] Optionally, a sealing glue is provided on the surface of the Hall circuit board 2 to improve the waterproof performance of the Hall circuit board 2.

[0049] In the above process:

[0050] ① The Hall circuit board 2 and the multi-pole component 4 do not need to be in direct contact, so there will be no situation of output noise generated due to uneven friction surfaces, thus ensuring the stability of the output signal;

[0051] ② The Hall circuit board 2 and the multi-pole component 4 do not need to rub against each other, so the problem of short service life caused by friction can be avoided;

[0052] ③ The Hall circuit does not need to be in direct contact with the multi-pole component 4, so the Hall circuit board 2 can be directly sealed with sealing glue, thereby improving the waterproof performance.

[0053] Therefore, the non-contact Hall incremental encoder provided by the present utility model can effectively solve the problems existing in the existing encoders, such as unstable output signals, short service life, and poor waterproof performance.

[0054] Optionally, referring to Figure 2 , the Hall circuit board 2 includes a signal processing circuit. Further, the Hall circuit board 2 further includes a power input pin 201 electrically connected to the signal processing circuit, a group A Hall element 205, a group A output pin 202 provided corresponding to the group A Hall element 205, a group B Hall element 206, a group B output pin 203 provided corresponding to the group B Hall element 206, and a ground pin 204.

[0055] In this embodiment, the signal processing circuit is mainly used to process the signal changes generated by the group A Hall element 205 and output them externally through the group A output pin 202, and process the signal changes generated by the group B Hall element 206 and output them externally through the group B output pin 203. The internal of the signal processing circuit may include conventional circuit modules such as an amplification circuit, a filtering circuit, and a shaping circuit. Its specific circuit structure is not the focus of the present utility model, so it will not be elaborated.

[0056] Both the group A Hall element 205 and the group B Hall element 206 can output high and low level changes according to the magnetic field change. For example, when the S pole is detected, the group A output pin 202 and the group B output pin 203 output high level signals. When the N pole is detected, the group A output pin 202 and the group B output pin 203 output low level signals;

[0057] Due to the position difference between the group A Hall element 205 and the group B Hall element 206, the time for the same magnetic pole to pass through the group A Hall element 205 and the group B Hall element 206 in sequence is also different. Therefore, there is a phase difference between the signals output by the group A output pin 202 and the group B output pin 203. For example, the signal curves output by the group A output pin 202 and the group B output pin 203 can be as Figure 2 shown (the group A Hall element 205 corresponds to the A-C curve, and the group B Hall element 206 corresponds to the B-C curve).

[0058] According to the phase difference between the A-C curve and the B-C curve, information such as the rotation direction and angle of the rotating ring 3 can be determined, thereby realizing the related functions of the incremental encoder.

[0059] The multi-pole component 4 includes several groups of magnet pairs 401, and each group of magnet pairs 401 includes an S-pole magnet and an N-pole magnet. In this embodiment, the magnet pairs 401 are sequentially connected to form an integral ring structure. Further, the rotating ring 3 is provided with an annular groove for the multi-pole component 4 of the ring structure to be snapped into.

[0060] In some other embodiments, the magnet pairs 401 are independently arranged relative to each other. Correspondingly, a plurality of arc-shaped grooves are provided on the circumferential surface of the rotating ring 3, and each magnet pair 401 is mounted and fixed in one of the arc-shaped grooves.

[0061] In summary, the non-contact Hall incremental encoder provided by this embodiment has the following advantages:

[0062] ① The Hall circuit board 2 and the multi-pole component 4 do not need to be in direct contact, and there is no situation of output noise generated due to uneven friction surfaces, thus ensuring the stability of the output signal;

[0063] ② The Hall circuit board 2 and the multi-pole component 4 do not need to rub against each other, avoiding the problem of short service life caused by friction. This non-contact design greatly extends the service life of the encoder, reduces the maintenance cost and replacement frequency.

[0064] ③ The Hall circuit does not need to be in direct contact with the multi-pole component 4, and the Hall circuit board 2 can be directly sealed with sealant, effectively improving the waterproof performance;

[0065] ④ The multi-pole component 4 can be that several groups of magnet pairs 401 are sequentially connected to form an integral ring structure and snapped into the annular groove of the rotating ring 3, or the magnet pairs 401 are independently arranged and mounted and fixed in several arc-shaped grooves on the circumferential surface of the rotating ring 3; this flexible installation method provides more choices for different application scenarios.

[0066] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of this application, using the content recorded in the text and drawings of the specification of this application, and any technical solutions directly or indirectly implementing the above embodiments in other related technical fields, etc., are all included in the patent protection scope of this application.

Claims

1. A non-contact Hall incremental encoder, characterized in that, Comprising: Encoder base (1); Hall circuit board (2), which is installed in the encoder base (1) and is used to generate electrical signals according to the changing magnetic field; Rotating ring (3), which is rotatably installed on the encoder base (1); Multi-pole component (4), which is installed on the rotating ring (3) and is used to provide the changing magnetic field to the Hall circuit board (2) when rotating with the rotating ring (3).

2. The non-contact Hall incremental encoder according to claim 1, characterized in that, The Hall circuit board (2) includes a signal processing circuit; The Hall circuit board (2) further includes a power input pin (201) electrically connected to the signal processing circuit, a group A Hall element (205), a group A output pin (202) provided corresponding to the group A Hall element (205), a group B Hall element (206), and a group B output pin (203) provided corresponding to the group B Hall element (206).

3. The non-contact Hall incremental encoder according to claim 2, wherein, The Hall circuit board (2) further includes a ground pin (204) electrically connected to the signal processing circuit.

4. The non-contact Hall incremental encoder according to claim 1, characterized in that, The multi-pole component (4) includes several groups of magnet pairs (401), and each group of magnet pairs (401) includes an S-pole magnet and an N-pole magnet.

5. The non-contact Hall incremental encoder according to claim 4, characterized in that, Each of the magnet pairs (401) is independently arranged with respect to each other.

6. The non-contact Hall incremental encoder according to claim 5, characterized in that, The circumferential surface of the rotating ring (3) is provided with several arc-shaped grooves, and each magnet pair (401) is installed and fixed in one of the arc-shaped grooves.

7. The non-contact Hall incremental encoder according to claim 4, wherein, Each of the magnet pairs (401) is sequentially connected to form a ring structure.

8. The non-contact Hall incremental encoder according to claim 7, characterized in that, The rotating ring (3) is provided with an annular groove for the multi-pole component (4) in the ring structure to be snapped into.

9. The non-contact Hall incremental encoder according to claim 1, characterized in that, The surface of the Hall circuit board (2) is provided with sealant.

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