Encoder

Abstract

The utility model relates to the technical field of encoders, and particularly discloses an encoder, which comprises a base, an annular rotating shaft, an inductor and a packaging bracket, the annular rotating shaft is rotationally arranged on the base; an annular positioning part is arranged on the periphery of the annular rotating shaft in a protruding mode and provided with a multi-pole magnetic ring. The inductor is arranged on the base; the packaging bracket is connected to the base and covers the annular positioning part; the packaging support is provided with an elastic positioning piece, the annular positioning part is provided with a plurality of positioning grooves arranged at intervals in the circumferential direction, and the elastic positioning piece can elastically abut against one of the positioning grooves. According to the utility model, the elastic positioning member can elastically abut against one of the plurality of positioning grooves, so that the rotation angle can be accurately positioned when the annular rotating shaft rotates, and the adjustment precision is high, and therefore, the normal use of equipment using the encoder cannot be affected by inaccurate instructions; and the conditions of equipment damage and safety accidents are further avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to encoder technical field especially relates to a kind of encoders. BACKGROUND

[0002] Encoder is a kind of signal or data is arranged, and it is converted into the signal form available for communication, transmission and storage equipment, it is widely applied in industrial equipment, medical equipment, electronic equipment, life equipment, aerospace, measurement and verification etc. technical field. Among them, hollow encoder is rotated by rotating shaft and magnet, changes magnetic field, so that receiver detects the change of magnetic field and outputs electric signal, to react the rotating direction and position information of rotating shaft.

[0003] At present, rotating shaft is driven by connecting motor or speed reducer to realize rotation, to change the magnetic field change detected by receiver, the structure is simple, and the anti-interference ability is strong, but in prior art, the adjustment accuracy of hollow encoder is low, so that the equipment using the encoder is easy to receive inaccurate instruction, and then affect normal use, and seriously it can also lead to equipment damage, even produce safety accident. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of encoder, to solve the problem in prior art, the adjustment accuracy of hollow encoder is low, so that the equipment using the encoder is easy to receive inaccurate instruction, and then affect normal use.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of encoder, comprising:

[0007] Base;

[0008] Annular rotating shaft, the annular rotating shaft is rotated and is established on the base;The outer periphery of the annular rotating shaft is provided with annular positioning part, and the annular positioning part is provided with multipole magnetic ring;

[0009] Inductor, the inductor is established on the base, and the inductor is used for inducting the magnetic field of the multipole magnetic ring;

[0010] Encapsulation support, the encapsulation support is connected to the base, and covers the annular positioning part;The encapsulation support is provided with elastic positioning piece, the annular positioning part is provided with a plurality of interval positioning grooves along the circumferential direction, and the elastic positioning piece can be elastically abutted in one of a plurality of positioning grooves.

[0011] As an optional solution of the above-mentioned encoder, the elastic positioning member comprises a ring-shaped sheet and an elastic tab provided on the ring-shaped sheet, the ring-shaped sheet is clamped between the packaging support and the ring-shaped positioning portion, and the elastic tab elastically abuts in one of the positioning grooves.

[0012] As an optional solution of the above-mentioned encoder, the elastic tab is in an arc-shaped structure, the positioning groove is an arc-shaped groove, and the arc-shaped surface of the elastic tab can be attached to the groove wall of the positioning groove.

[0013] As an optional solution of the above-mentioned encoder, the end portion of the ring-shaped sheet is provided with a clamping groove in the radial direction, the packaging support is provided with a clamping portion extending in the axial direction, and the clamping portion is clamped in the clamping groove.

[0014] As an optional solution of the above-mentioned encoder, the base is provided with a limiting groove in the axial direction, and the clamping portion is inserted into the limiting groove.

[0015] As an optional solution of the above-mentioned encoder, the free end of the clamping portion can be bent and attached to the end surface of the base.

[0016] As an optional solution of the above-mentioned encoder, the base is provided with a mounting groove, and the inductor is arranged in the mounting groove.

[0017] As an optional solution of the above-mentioned encoder, the mounting groove is arranged on the side facing the packaging support, and the packaging support has an extension portion capable of blocking the mounting groove.

[0018] As an optional solution of the above-mentioned encoder, the inductor and the multi-pole magnetic coil are arranged in the radial direction.

[0019] As an optional solution of the above-mentioned encoder, the base is provided with a through hole arranged in the axial direction.

[0020] The beneficial effects of the present application are as follows:

[0021] The encoder comprises a base, a ring-shaped rotating shaft, an inductor and a packaging support. The ring-shaped rotating shaft is arranged to rotate on the base, and a ring-shaped positioning part is arranged on the outer periphery of the ring-shaped rotating shaft. The ring-shaped positioning part is provided with a multi-pole magnetic ring, so that when the ring-shaped rotating shaft rotates, the multi-pole magnetic ring can rotate with the ring-shaped positioning part. The inductor is arranged on the base and is used to induct the magnetic field of the multi-pole magnetic ring, so that the multi-pole magnetic ring can generate different magnetic field changes when rotating at different angles, and the inductor can induct the corresponding magnetic field changes and output an electric signal. The packaging support is connected to the base and covers the ring-shaped positioning part, so as to prevent the ring-shaped rotating shaft from moving the multi-pole magnetic ring along the axial direction and affecting the accuracy of signal output. The packaging support is provided with an elastic positioning piece, and the ring-shaped positioning part is provided with a plurality of spaced positioning grooves in the circumferential direction. The elastic positioning piece can elastically abut in one of the plurality of positioning grooves, so that the ring-shaped rotating shaft can be accurately positioned when rotating, and the adjustment accuracy is high, so that the equipment using the encoder will not receive inaccurate instructions and affect normal use, further avoiding equipment damage and safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 A structural schematic view of the encoder provided by the embodiment of the present application is provided.

[0023] Fig. 2 A sectional view of the encoder provided by the embodiment of the present application is provided.

[0024] Fig. 3 An exploded view of the encoder provided by the embodiment of the present application is provided.

[0025] In the drawings:

[0026] 1, base; 11, limiting groove; 12, mounting groove; 13, through hole; 2, ring-shaped rotating shaft; 21, ring-shaped positioning part; 211, positioning groove; 22, multi-pole magnetic ring; 3, inductor; 4, packaging support; 41, elastic positioning piece; 411, ring-shaped piece; 4111, clamping groove; 412, elastic tab; 42, clamping part; 43, extension part. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] like Figs. 1-3 As shown, this embodiment provides an encoder capable of issuing commands to devices using the encoder.

[0032] The encoder includes a base 1, an annular rotating shaft 2, a sensor 3, and a mounting bracket 4. The annular rotating shaft 2 is rotatably mounted on the base 1. An annular positioning part 21 protrudes from the outer periphery of the annular rotating shaft 2. The annular positioning part 21 is provided with a multi-pole magnetic ring 22, so that when the annular rotating shaft 2 rotates, the multi-pole magnetic ring 22 can rotate with the annular positioning part 21. At the same time, the sensor 3 is mounted on the base 1. The sensor 3 is used to sense the magnetic field of the multi-pole magnetic ring 22. Thus, the multi-pole magnetic ring 22 can generate different magnetic field changes when rotating at different angles, so that the sensor 3 can sense the corresponding magnetic field changes and output an electrical signal.

[0033] Optionally, the inductor 3 and the multi-pole magnetic coil 22 are arranged radially spaced apart, so that the inductor 3 can sense a clear magnetic field distribution, thereby improving the accuracy of the output electrical signal of the inductor 3. Further optionally, the annular positioning portion 21 is provided with an annular mounting groove on the side facing the base 1, and the multi-pole magnetic coil 22 can be mounted in the annular mounting groove by cold riveting process.

[0034] The packaging bracket 4 is connected to the base 1 and covers the annular positioning portion 21, thereby preventing the annular rotating shaft 2 from moving along the axial direction and affecting the accuracy of the signal output, and the packaging bracket 4 is provided with an elastic positioning member 41, and the annular positioning portion 21 is provided with a plurality of spaced apart positioning grooves 211 in the circumferential direction, and the elastic positioning member 41 can be elastically abutted in one of the plurality of positioning grooves 211, so that the annular rotating shaft 2 can be accurately positioned when rotating, and the adjustment accuracy is high, so that the equipment using the encoder will not receive inaccurate instructions and affect normal use, further avoiding the occurrence of equipment damage and safety accidents. Optionally, the plurality of positioning grooves 211 on the annular positioning portion 21 are arranged at equal circumferential angles. Further optionally, the base 1 is provided with a through hole 13 arranged through in the axial direction, so that the encoder can be more convenient to install on the using equipment by hollow design, avoiding space limitation and reducing installation difficulty.

[0035] As shown in Fig. 2 and Fig. 3 The elastic positioning member 41 includes an annular sheet 411 and an elastic tab 412 provided on the annular sheet 411, the annular sheet 411 is clamped between the packaging bracket 4 and the annular positioning portion 21, and the elastic tab 412 is elastically abutted in one of the plurality of positioning grooves 211, so that during the rotation of the annular rotating shaft 2, the annular positioning portion 21 can rotate relative to the annular sheet 411, and the elastic tab 412 on the annular sheet 411 can be elastically deformed, so as to realize the elastic tab 412 from one positioning groove 211 to another positioning groove 211. Optionally, the elastic tab 412 is an arc structure, and the positioning groove 211 is an arc groove, and the arc surface of the elastic tab 412 can be fitted to the groove wall of the positioning groove 211, so as to reduce the wear of the elastic tab 412 and the positioning groove 211, and prolong the service life of the encoder.

[0036] As shown in Fig. 1 and Fig. 3As shown, the end of the annular sheet 411 is provided with a clamping groove 4111 in the radial direction, the packaging support 4 is provided with a clamping portion 42 extending in the axial direction, and the clamping portion 42 is clamped in the clamping groove 4111, so that the clamping portion 42 can clamp and limit the annular sheet 411, preventing the annular sheet 411 from rotating relative to the packaging support 4. At the same time, the base 1 is provided with a limiting groove 11 in the axial direction, and the clamping portion 42 is inserted into the limiting groove 11, so that the packaging support 4 can be conveniently positioned and installed on the base 1 through the insertion of the clamping portion 42 in the limiting groove 11, thereby improving the installation precision and preventing the packaging support 4 from rotating with the annular shaft 2 during rotation. Alternatively, the free end of the clamping portion 42 can be bent and combined with the end face of the base 1, so that the packaging support 4 can be fixedly connected to the base 1 through the clamping portion 42.

[0037] Further, the base 1 is provided with an installation groove 12, and the inductor 3 is arranged in the installation groove 12, so that the inductor 3 can be protected through the installation groove 12. At the same time, the installation groove 12 is arranged on the side facing the packaging support 4, and the packaging support 4 has an extension portion 43, which can block the installation groove 12, so as to completely enclose the inductor 3 and meet the requirements of waterproofing and dustproofing of the encoder. Alternatively, the inductor 3 is a Hall element.

[0038] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, it is not necessary or possible to exhaust all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An encoder, characterized by The utility model relates to a kind of magnetic field sensing device, including: Base (1); Annular rotating shaft (2), the annular rotating shaft (2) is rotationally arranged on the base (1);The outer periphery of the annular rotating shaft (2) is provided with annular positioning part (21), and the annular positioning part (21) is provided with multi-pole magnetic coil (22); Inductor (3), the inductor (3) is arranged on the base (1), and the inductor (3) is used to induct the magnetic field of the multi-pole magnetic coil (22); Encapsulation support (4), the encapsulation support (4) is connected to the base (1), covers the annular positioning part (21);The encapsulation support (4) is provided with elastic positioning piece (41), and the annular positioning part (21) is provided with a plurality of interval positioning grooves (211) along the circumference direction, and the elastic positioning piece (41) can be elastically abutted in one of a plurality of positioning grooves (211).

2. The encoder of claim 1, wherein, The elastic positioning piece (41) includes annular sheet (411) and elastic tab (412) arranged on the annular sheet (411), the annular sheet (411) is clamped between the encapsulation support (4) and the annular positioning part (21), and the elastic tab (412) is elastically abutted in one of a plurality of positioning grooves (211).

3. The encoder of claim 2, wherein, The elastic tab (412) is arc structure, the positioning groove (211) is arc groove, and the arc surface of the elastic tab (412) can be fitted to the groove wall of the positioning groove (211).

4. The encoder of claim 2, wherein, The end of the annular sheet (411) is provided with a clamping groove (4111) along the radial direction, and the encapsulation support (4) is provided with a clamping portion (42) extending along the axial direction, and the clamping portion (42) is clamped in the clamping groove (4111).

5. The encoder of claim 4, wherein, The base (1) is provided with a limiting groove (11) along the axial direction, and the clamping portion (42) is inserted into the limiting groove (11).

6. The encoder of claim 4, wherein, The free end of the clamping portion (42) can be bent and combined with the end face of the base (1).

7. The encoder of claim 1, wherein, The base (1) is provided with a mounting groove (12), and the inductor (3) is arranged in the mounting groove (12).

8. The encoder of claim 7, wherein, The mounting groove (12) is arranged on the side facing the encapsulation support (4), and the encapsulation support (4) has an extension (43), and the extension (43) can block the mounting groove (12).

9. The encoder of claim 1, wherein, The inductor (3) and the multi-pole magnetic coil (22) are arranged along the radial direction.

10. The encoder according to any one of claims 1 to 9, characterized in that The base (1) is provided with a through hole (13) penetrating along the axial direction.

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