CN208904844U - Magnetic coding disk and magnetic coder - Google Patents

Abstract

The utility model discloses a kind of magnetic coding disk comprising disk body and multiple magnetites；Disk body has installation through-hole, and the outer peripheral edge of disk body is equipped with multiple mounting grooves, and multiple mounting grooves surround installation through-hole, and multiple magnetites are set in multiple mounting grooves；Wherein, magnetic coding disk is sheathed in the rotation axis of motor, drives multiple magnetites rotation on magnetic coding disk when motor rotates, and the angle or shift value that magnetic resistance or Hall element change multiple magnetites measure.The utility model also provides a kind of magnetic coder.The magnetic coding disk encoder of the utility model realizes the smallest segmentation angle, so that more numbers of pole-pairs are partitioned into, to reach higher precision by the structure of change magnetic coding disk in limited outer dimension.

Description

Magnetic coding disk and magnetic coder

Technical field

The utility model relates to motor encoder technical fields, and in particular, to a kind of magnetic coding disk and magnetic coder.

Background technique

Magnetic coder is that perhaps its principle of displacement measuring device is using magnetic resistance or Hall element to the novel angle of one kind The angle variation that perhaps shift value measures magnetic material angle or displacement of the magnetic material of variation can be caused centainly The variation of resistance or voltage amplifies variable quantity by amplifying circuit, output pulse signal after being handled by single-chip microcontroller Or analog signals, achieve the purpose that measurement, therefore, in terms of magnetic coder is widely used in angle-controlled motor, still, passes The magnetic coding disk of the magnetic coder of system is by external form volume and the limitation of material technology, so that the excessive time-division chamfer degree of number of poles is too It is small, cause magnetizing coil that can not make, to cannot achieve more number of pole-pairs precision.

Utility model content

In view of the deficiencies of the prior art, the utility model discloses a kind of magnetic coding disk comprising: disk body and multiple magnetites； Disk body has installation through-hole, and the outer peripheral edge of disk body is equipped with multiple mounting grooves, and multiple mounting grooves surround installation through-hole, and multiple magnetites are set It is placed in multiple mounting grooves；Wherein, magnetic coding disk is sheathed in the rotation axis of motor, is driven when motor rotates multiple on disk body Magnetite rotation, the angle or shift value that magnetic resistance or Hall element change multiple magnetites measure.

An embodiment according to the present utility model, above-mentioned disk body are engineering plastic.

An embodiment according to the present utility model, above-mentioned magnetite are sintering rubidium iron boron.

An embodiment according to the present utility model, the cross section of above-mentioned magnetite are rectangle.

On the other hand the utility model discloses a kind of magnetic coder, including above-mentioned magnetic coding disk.

An embodiment according to the present utility model, above-mentioned magnetic coder further include pcb board, and pcb board is sheathed on motor In rotation axis.And between magnetic coding disk and motor.

An embodiment according to the present utility model, above-mentioned pcb board have an at least Hall element, at least a Hall element Between multiple magnetites and pcb board.

An embodiment according to the present utility model, above-mentioned pcb board have multiple via holes.

An embodiment according to the present utility model, above-mentioned pcb board have an at least fabrication hole.

The utility model has the following beneficial effects: knot of the magnetic coding disk encoder of the utility model by change magnetic coding disk Structure realizes the smallest segmentation angle in limited outer dimension, so that more numbers of pole-pairs are partitioned into, to reach more high-precision Degree.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:

Fig. 1 is the structural schematic diagram of magnetic coder in the utility model embodiment；

Fig. 2 is the structural schematic diagram of magnetic coding disk in the utility model embodiment；

Fig. 3 is the structural schematic diagram of pcb board in the utility model embodiment.

Specific embodiment

Multiple embodiments that the utility model will be disclosed with schema below, as clearly stated, in many practices Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical new Type.That is, the details in these practices is non-essential in some embodiments of the utility model.In addition, for letter For the sake of changing schema, some known usual structures and component will be painted it in the drawings in simply illustrative mode.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.

In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, and non-specifically The meaning of order or cis-position is censured, it is also non-to limit the utility model, it is retouched just for the sake of difference with same technique term The component stated or operation are not understood to indicate or imply its relative importance or implicitly indicate indicated technology The quantity of feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution Conjunction is not present, also not within the protection scope of the requires of the utility model.

For the contents, features and effects that can further appreciate that the utility model, the following examples are hereby given, and cooperates attached drawing Detailed description are as follows:

Fig. 1, Fig. 2 and Fig. 3 are please referred to, Fig. 1 is the structural schematic diagram of magnetic coder 1 in the utility model embodiment, Fig. 2 For the structural schematic diagram of magnetic coding disk 11 in the utility model embodiment, Fig. 3 is the knot of pcb board 12 in the utility model embodiment Structure schematic diagram.As shown, the magnetic coder 1 of the application includes magnetic coding disk 11 and pcb board 12.Further, magnetic coding disk 11 include disk body 111 and multiple magnetites 112.Disk body 111 has installation through-hole 1111, and the outer peripheral edge of disk body 111 is equipped with multiple peaces Tankage 1112, multiple mounting grooves 1112 surround installation through-hole 1111, and multiple magnetites 112 are set in multiple mounting grooves 1112.More Further, pcb board 12 has an at least Hall element 121, and an at least Hall element 121 is located at multiple magnetites 112 and pcb board Between 12.

When concrete application, magnetic coding disk 11 and pcb board 12 are sheathed in the rotation axis of motor, and pcb board 12 is located at magnetic Between coding disk 11 and motor, motor drives rotation axis rotation, to drive disk body 111 to rotate, so that multiple mounting grooves 1112 Interior multiple magnetites 112 rotate with it, and in rotation process, the N/S magnetic pole of multiple magnetites 112 and an at least Hall element 121 are felt It answers, the corresponding output square-wave signal of an at least Hall element 121, the square-wave signal exported in the unit time is more, the pole being partitioned into Logarithm is more, to achieve the purpose that higher precision.

Preferably, disk body 111 is engineering plastic.Engineering plastic has good insulating properties, and sound insulation, sound-absorbing, absorbing, disappears Acoustic performance is brilliant, therefore, will not magnetize to magnetite 112 and cause to limit.

Preferably, magnetite 112 is sintering rubidium iron boron.Sintered NdFeB has excellent magnetic property, can be divided into more The single magnetic patch of small size, when single sintering rubidium iron boron magnetic patch magnetizes, the magnetizing coil of motor be can not be limited, therefore, More numbers of pole-pairs can be divided in the identical situation of 111 size of disk body, reach higher precision.

Preferably, the cross section of magnetite 112 is rectangle.Certainly, magnetite 112 can also select cross section for circle according to demand The magnetite 112 of shape, triangle or other shapes above are only an embodiment of the utility model, should not be as limit.

Preferably, pcb board 12 has multiple via holes 122.The signal wire of multiple electronic components on pcb board 12 passes through multiple Via hole 122, in order to avoid interference is generated between each other, to influence normal use.In this implementation, the quantity of via hole 123 is seven, seven A via hole 123 is arranged as "-" type, and in order to passing through for signal wire, certainly, the quantity of fabrication hole can be increased according to demand Or reduce, arrangement mode can also be changed according to demand, above are only an embodiment of utility model, should not be as Limit.

Preferably, pcb board 12 has an at least fabrication hole 123.Fabrication hole 123 plays position-limiting action to pcb board, is convenient for The processing or plug-in subcomponent of pcb board keep product structure more compact in addition, saving material.In this implementation, the number of fabrication hole 123 Amount is two, and certainly, the quantity of fabrication hole can be increased or be reduced according to demand, above are only an implementation of utility model Mode, should not be as limit.

In conclusion the magnetic coding disk encoder of the utility model is logical in one or more embodiments of the utility model The structure for changing magnetic coding disk is crossed, the smallest segmentation angle is realized in limited outer dimension, to be partitioned into more poles Logarithm, to reach higher precision.

Upper described only the embodiments of the present invention, is not intended to limit the utility model.For this field For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model Any modification, equivalent substitution, improvement and etc. of work should all include within the scope of the claims of the utility model.

Claims (9)

1. a kind of magnetic coding disk, which is characterized in that including disk body and multiple magnetites；The disk body has installation through-hole, the disk The outer peripheral edge of body is equipped with multiple mounting grooves, and the multiple mounting groove surrounds the installation through-hole, and the multiple magnetite is set to institute It states in multiple mounting grooves；

Wherein, the magnetic coding disk is sheathed in the rotation axis of motor, and the motor drives described on the disk body when rotating The angle or shift value that the rotation of multiple magnetites, magnetic resistance or Hall element change the multiple magnetite measure.

2. magnetic coding disk according to claim 1, which is characterized in that the disk body is engineering plastic.

3. magnetic coding disk according to claim 1, which is characterized in that the magnetite is sintering rubidium iron boron.

4. magnetic coding disk according to claim 1, which is characterized in that the cross section of the magnetite is rectangle.

5. a kind of magnetic coder, which is characterized in that including the described in any item magnetic coding disks of claim 1-4.

6. magnetic coder according to claim 5, which is characterized in that the magnetic coder further includes pcb board, the PCB Sleeve-board is set in the rotation axis of the motor, and between the magnetic coding disk and the motor.

7. magnetic coder according to claim 6, which is characterized in that the pcb board has an at least Hall element, described At least a Hall element is between the multiple magnetite and the pcb board.

8. magnetic coder according to claim 6, which is characterized in that the pcb board has multiple via holes.

9. magnetic coder according to claim 6, which is characterized in that the pcb board has an at least fabrication hole.