Encoder and motor

Abstract

The utility model belongs to the technical field of sensors, and particularly relates to an encoder and a motor. According to the encoder provided by the utility model, the magnet area is arranged on the signal triggering assembly, and the magnet is arranged in the magnet area, so that a traditional annular magnet or a large magnet is replaced. Compared with the prior art, when the encoder is manufactured, fewer magnet materials are used, more cost is saved, the magnet adopts a single-pole magnetizing mode, and the annular or large magnet needs multi-pole magnetizing, so that a magnetic field generated by the magnet is more uniform, and due to the existence of the magnet area, the magnetic field is easier to control.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors, and in particular relates to an encoder and a motor. Background Art

[0002] An encoder is a device that compiles and converts signals, such as bit streams or data, into a signal form that can be used for communication, transmission, and storage. In some common scenarios, it can be set on the motor as a sensor to measure the motor's motion state, so as to understand the motor state in real time and achieve reliable operation of the motor through automatic adjustment.

[0003] Motor encoders usually use the interaction between Hall elements and magnets. The principle is to set the magnet to rotate at the motor drive end, while the Hall element is fixed. When the motor rotates, the Hall element and the magnet move against each other. At this time, the Hall element will detect the change in the magnetic field and output a certain electrical signal. After processing the signal, the movement state of the motor can be known.

[0004] In some existing technical means, magnetic rings or large magnets are often used to change the magnetic field. In the current situation where rare earths are scarce and magnets are expensive, the cost of encoders is getting higher and higher. Moreover, when ring magnets and large magnets are magnetized at multiple levels, the magnetic field is often uneven, which makes the detection data often inaccurate. Utility Model Content

[0005] Based on the above problems, the utility model proposes an encoder, in which the magnetic field device that affects the electrical signal is replaced by a small magnet instead of a large magnet, reducing the volume and manufacturing materials of the magnet. The magnet is connected to the magnet area in the signal trigger component by a magnet, avoiding the problem of uneven magnetic field during multi-pole magnetization, and also solving the problem that large or annular magnets are difficult to install or easy to break.

[0006] In a first aspect, the utility model provides an encoder, comprising:

[0007] case,

[0008] A signal generating component, wherein the signal generating component is disposed in the housing and is provided with at least one Hall element;

[0009] A drive assembly is provided with a drive shaft, and the housing is sleeved on the drive shaft; and

[0010] A signal trigger component is fixed on the driving shaft; the signal trigger component is provided with a plurality of magnetic areas, and adjacent magnetic areas are isolated from each other; a magnet is provided in the magnetic area and a Hall signal is generated through relative movement between the magnet and the Hall element.

[0011] By setting up magnetic areas on the signal trigger component, the magnetic areas are isolated from each other, and the relative positions of the magnets in the magnetic areas are consistent, so that the magnetic field generated between the magnets is easier to control and its uniformity is better achieved. In addition, the magnet is smaller in size than annular and large magnets, reducing the materials needed to make the magnet. In addition, the magnet is magnetized with a single pole, which is more uniform than multi-pole magnetization, so the magnetic field generated by the magnet and the Hall signal generated by the Hall element are more accurate.

[0012] In some embodiments, the magnets are evenly distributed in the signal trigger assembly along the circumference of the drive shaft, and the magnetism of magnets in adjacent magnet areas is opposite.

[0013] By setting magnets on the circumferential side of the drive shaft, and staggeredly arranging magnets N and S in adjacent magnet areas, when the signal triggers the component to rotate, the Hall element can sense the change in the magnetic field and generate a Hall signal to detect the driving state of the drive component.

[0014] In some embodiments, the signal generating component includes a PCBA board, the Hall element is arranged on the PCBA board, and the PCBA board is also provided with a signal line, and the signal line passes through a cable outlet arranged on the shell and is connected to an external device.

[0015] The signal generating component senses the Hall signal through the Hall element, transmits the Hall signal to the PCBA, and transmits it to the external analysis equipment through the signal line for analysis.

[0016] In some embodiments, the signal trigger component includes a fixing member, a connecting hole is provided in the middle of the fixing member, and the fixing member is provided with a plurality of partitions and the magnetic area is separated by the partitions.

[0017] A plurality of magnetic areas are arranged on the signal trigger component, and equal area ranges are isolated by the magnetic areas, so that the magnetic field generated at various locations on the signal trigger component is more uniform and controllable.

[0018] In some embodiments, the driving assembly further includes a motor body, and the driving shaft is connected to the driving end of the motor body and is driven to rotate by the motor.

[0019] By extending the driving shaft into the connecting hole, the signal triggering component can follow the rotation of the driving shaft, and further the signal triggering component can detect the rotation status of the driving source.

[0020] In some embodiments, the magnet area is provided with at least one magnetic hole, and the magnet is embedded and fixed in the magnetic hole.

[0021] A plurality of magnetic holes are arranged in the same magnetic area for clamping the magnet so that the magnet is embedded and fixed in the magnetic control, and the size of the magnetic hole is consistent with the size of the magnet.

[0022] In some embodiments, when there are multiple Hall elements, the multiple Hall elements are arranged along the circumference of the signal generating component.

[0023] Multiple Hall elements can be provided and arranged in a circle. A Hall circular angle is set between the multiple Hall elements according to the rotor position to better detect and control the motor.

[0024] In some embodiments, the driving assembly includes a motor body, which is disposed inside the housing and is drivingly connected to the driving shaft.

[0025] The driving assembly can be set as a motor body, which is set inside the shell, and the motor body drives the shaft to rotate.

[0026] In some embodiments, the housing includes a first fixing seat, a second fixing seat, and a third fixing seat, the first fixing seat fixes the motor, the second fixing seat fixes the PCBA board, and the third fixing seat fixes the magnetic seat.

[0027] The shell is provided with a first fixing seat to fix the motor, a second fixing seat to fix the PCBA board, and a third fixing seat to fix the magnetic seat, so that the signal generating component, the driving component, and the signal triggering component are stably fixed on the shell and generate a stable Hall detection signal.

[0028] In a second aspect, the utility model provides a motor, specifically comprising the above-mentioned encoder, wherein the motor driving end is fixed on the housing, and the driving signal of the motor driving end triggers the component to rotate.

[0029] When the motor is used in a specific scenario, the encoder is used to automatically control the motor or analyze and control the motor speed through external equipment.

[0030] The utility model provides an encoder and a motor, which have the following effects:

[0031] The encoder of the utility model replaces the traditional annular magnet or large block magnet by arranging a magnetic area on the signal trigger component and arranging a magnet in the magnetic area. When manufacturing the encoder, less magnetic material is used, which is more cost-saving. The magnet adopts a single-pole magnetization method, while the annular or large block magnet requires multi-pole magnetization, so that the magnetic field generated by the magnet is more uniform, and due to the existence of the magnetic area, the magnetic field is also easier to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The encoder of the utility model is three-dimensional Figure 1 ;

[0033] Figure 2 The encoder of the utility model is three-dimensional Figure 2 ;

[0034] Figure 3 This is a front view of the fixing member of the utility model;

[0035] Figure 4 This is a schematic diagram of the combination of the magnet and the magnetic hole of the utility model;

[0036] Figure 5 This is a schematic structural diagram of the combination of the encoder and the rotating device of the motor in Example 3 of the utility model.

[0037] Reference numerals:

[0038] 100. Shell;

[0039] 200, signal generating component; 210, Hall element;

[0040] 300, driving assembly; 310, driving shaft; 320, motor body;

[0041] 400, signal trigger component; 410, fixing part; 420, magnet; 430, magnet area; 431, magnetic hole; 510, rotating screw; 520, rotating gear. DETAILED DESCRIPTION

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0043] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the specific technical solution of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0044] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0045] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0046] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0047] In the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0048] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the related in a specific way.

[0049] Embodiment 1:

[0050] like Figure 1 As shown, this embodiment provides an encoder, including:

[0051] Housing 100,

[0052] A signal generating component 200, wherein the signal generating component 200 is disposed in the housing 100, and at least one Hall element 210 is disposed on the signal generating component 200;

[0053] The driving assembly 300 is provided with a driving shaft 310, and the housing 100 is sleeved on the driving shaft 310; and

[0054] The signal trigger component 400 is fixed on the driving shaft 310; the signal trigger component 400 is provided with a plurality of magnetic areas 430, and adjacent magnetic areas 430 are isolated from each other; a magnet 420 is provided in the magnetic area 430 and the magnet 420 moves relative to the Hall element 210 to generate a Hall signal.

[0055] Specifically, in some embodiments, the housing 100 is the main body of the encoder, and a signal trigger component 400 and a signal generating component 200 are arranged on the main body; the signal trigger component 400 rotates, so that the Hall element 210 of the signal generating component 200 senses the change in the magnetic field and converts it into a Hall signal and generates a corresponding signal, through which the driving force that provides the rotation of the signal trigger component 400 can be detected in real time to monitor the rotation of the driving component 300 that provides the driving force. In this embodiment, in order to make

[0056] By setting the magnet area 430 on the signal trigger component 400, the magnet areas 430 are isolated from each other, and the relative positions of the magnets 420 in the magnet area 430 are consistent, so that the magnetic field generated between the magnets 420 is easier to control and its uniformity is better achieved. In addition, the magnet 420 is smaller in size than the annular and large magnets 420, reducing the materials required to make the magnet. In addition, the magnet 420 adopts unipolar magnetization, which is more uniform than multi-pole magnetization, so that the magnetic field generated by the magnet 420 and the Hall signal generated by the Hall element 210 are more accurate.

[0057] Embodiment 2:

[0058] Based on Example 1, Figure 2 to Figure 4 As shown, this embodiment further optimizes and illustrates various parts of the encoder in Embodiment 1.

[0059] In some embodiments, the magnets 420 are evenly distributed in the signal triggering assembly 400 along the circumference of the driving shaft 310 , and the magnetism of the magnets 420 in adjacent magnet areas 430 is opposite.

[0060] Specifically, at this time, the magnets 420 are evenly distributed in the signal trigger component 400 along the circumference of the driving shaft 310, and the magnetic properties of the magnets 420 in the same magnet zone 430 remain consistent. In order to make the magnetic fields of each magnetic zone consistent, the arrangement of the magnets 420 in each magnet zone 430 is consistent.

[0061] Furthermore, in some preferred embodiments, a magnet 420 is disposed at the center of the magnet zone 430 , and the relative positions of the magnets 420 in each magnet zone 430 are consistent in the magnet zone 430 , and the circumferential angles between adjacent magnets 420 are consistent.

[0062] By setting the magnet 420 on the periphery of the driving shaft 310, and staggeredly arranging the magnets 420N and S in adjacent magnet areas 430, when the signal trigger component 400 rotates, the Hall element 210 can sense the change in the magnetic field and generate a Hall signal to detect the driving state of the driving component 300.

[0063] In some embodiments, the signal generating component 200 includes a PCBA board, the Hall element 210 is disposed on the PCBA board, and the PCBA board is also provided with a signal line, and the signal line passes through a cable outlet disposed on the housing 100 to connect with an external device.

[0064] Specifically, the Hall element 210 is arranged on the PCBA board, or the Hall element 210 is linearly connected to the PCBA board, and a collection device is arranged on the PCBA board, which can convert the Hall signal collected by the Hall element 210 into an output signal, and transmit it through a signal line to an external device for real-time monitoring.

[0065] The signal generating component 200 senses the Hall signal through the Hall element 210 , transmits the Hall signal to the PCBA, and transmits it to an external analysis device through a signal line for analysis.

[0066] In some embodiments, the signal trigger component 400 includes a fixing member 410 , a connecting hole is formed in the middle of the fixing member 410 , and the fixing member 410 is provided with a plurality of partitions and a magnetic area 430 is separated by the partitions.

[0067] The fixing member 410 is set in a disc shape, which is used to fix the magnet 420 and drive the magnet 420 to rotate. A fixing hole is set in the center of the disc of the fixing member 410, which is used to fix with the driving shaft 310 and enable the driving shaft 310 to drive the fixing member 410 to rotate. A partition is set between the fixing members 410 to separate the magnet area 430, wherein the partition can be set integrally with the fixing member 410, or the partition and the fixing member 410 can be detachably set.

[0068] A plurality of magnetic regions 430 are disposed on the signal trigger component 400 , and equal area ranges are isolated by the magnetic regions 430 , so that the magnetic field generated at various locations on the signal trigger component 400 is more uniform and controllable.

[0069] In some embodiments, the driving assembly (300) further includes a motor body, and the driving shaft (310) is connected to the driving end of the motor body and is driven to rotate by the motor.

[0070] Specifically, the drive shaft 310 includes a drive shaft 310, a transmission shaft, a rotating shaft, a transmission shaft, etc. The drive shaft 310 can be extended into the connecting hole and drive the signal trigger component 400 to rotate. By rotating, the magnet 420 on the signal trigger component 400 can be rotated, and then cooperate with the Hall element 210 to detect the rotation state of the driving source that drives the drive shaft 310 to rotate.

[0071] By extending the driving shaft 310 into the connecting hole, the signal triggering component 400 can rotate along with the driving shaft 310 , and further the signal triggering component 400 can detect the rotation status of the driving source.

[0072] In some embodiments, the magnet area 430 is provided with at least one magnetic hole 431 , and the magnet 420 is embedded and fixed in the magnetic hole 431 .

[0073] Specifically, a magnetic hole 431 is provided, and the size of the magnetic hole 431 is consistent with the size of the magnet 420. When the encoder installs the magnet 420, the magnet 420 is clamped in the magnetic hole 431 to complete the assembly of the magnet 420. In order to make the magnetic field more uniform, the magnet 420 is set at the center of the magnetic area 430.

[0074] A plurality of magnetic holes 431 are provided in the same magnetic region for clamping the magnet 420 so that the magnet 420 is embedded and fixed in the magnetron, and the size of the magnetic hole 431 is consistent with that of the magnet 420 .

[0075] In some embodiments, when there are multiple Hall elements 210 , the multiple Hall elements 210 are arranged along the circumference of the signal generating component 200 .

[0076] Specifically, two Hall elements 210 are provided, and a Hall angle is set between the two Hall elements 210. The angle of the Hall angle can be set according to the position between the magnetic poles, can be set according to the angle between the magnets 420, or the angle of the Hall angle is adjusted according to the resolution or accuracy requirements of the encoder, or can be set as a reference based on the magnet 420 or the magnetic mark set by the machine.

[0077] A plurality of Hall elements 210 may be provided, and Hall circular angles are provided between the Hall elements 210 according to the rotor position, so as to better detect and control the motor.

[0078] In some embodiments, the driving assembly 300 includes a motor body 320 , which is disposed inside the housing 100 and is drivingly connected to the driving shaft 310 .

[0079] Specifically, the driving component 300 may include a micromotor body 320, or a device body configured as a rotating device, which is clamped to the outside of the driving component 300 through the shell 100. The driving shaft 310 connects the microelectrode and drives the microelectrode to rotate, so that the encoder can monitor the rotation state of the micromotor or rotating device.

[0080] The driving assembly 300 may be provided as a motor body 320 , which is provided inside the housing 100 , and the motor body 320 drives the shaft 310 to rotate.

[0081] In some embodiments, the housing 100 includes a first fixing base, a second fixing base, and a third fixing base. The first fixing base fixes the motor, the second fixing base fixes the PCBA board, and the third fixing base fixes the magnetic base.

[0082] Specifically, a first fixing seat, a second fixing seat and a third fixing seat are provided. The first fixing seat is used to sleeve and fix the motor. Furthermore, the first fixing seat is provided with screw holes to be fixed to the periphery of the motor. The motor is provided with corresponding screw holes, and the first fixing seat is fixed to the periphery of the motor through the screw holes. Alternatively, the first fixing seat is provided with a snap-in position, and the motor is provided with a corresponding snap-in groove. The first fixing seat is snap-in to the motor through the snap-in position and the snap-in groove. The second fixing seat is used to fix the PCBA board. The second fixing seat is provided inside the housing 100 to prevent the PCBA board from being exposed to the outside, so that the housing 100 can protect the PCBA board. The third fixing seat is used to fix the magnetic seat, and the surface of the third fixing seat is provided with a through hole for extending the Hall element 210, and a through hole for extending the drive shaft 310.

[0083] The shell 100 is provided with a first fixing seat to fix the motor, a second fixing seat to fix the PCBA board, and a third fixing seat to fix the magnetic seat, so that the signal generating component 200, the driving component 300, and the signal triggering component 400 are stably fixed on the shell 100 and generate a stable Hall detection signal.

[0084] Embodiment 3:

[0085] Based on Example 1, Figure 5 As shown, this embodiment further illustrates the application scenario of embodiment 1.

[0086] In some embodiments, a motor is provided, specifically including the encoder of the above-mentioned embodiment 1 or embodiment 2, the motor driving end is fixed on the housing 100, and the motor driving end drives the signal triggering component 400 to rotate.

[0087] The above-mentioned motor also includes a rotating device, which includes a rotating structure, so that the motor can rotate under the drive of the rotating structure, but the relative position between the signal generating component 200 of the encoder and the signal triggering component 400 remains unchanged.

[0088] Further, in some optional embodiments, the rotating structure includes a rotating screw 510 and a rotating gear 520. The rotating screw 510 is fixed to the other side of the motor where the drive shaft 310 is located. The rotating screw 510 can be fixed to the other end of the motor through an external fixing component, or the rotating screw 510 can be fixed by digging a rotating groove at the other end of the motor. The entire motor rotates by meshing the gears on the rotating gear 520 and the rotating screw 510. Since the encoder is fixed to the other side of the motor, the rotation does not affect the normal operation of the encoder.

[0089] The serial numbers of the utility model embodiments are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the utility model, and do not limit the patent scope of the utility model. Any equivalent device or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. An encoder, characterized in that: include: A housing (100), A signal generating component (200), the signal generating component (200) being arranged in the housing (100), and at least one Hall element (210) being arranged on the signal generating component (200); A driving assembly (300) is provided with a driving shaft (310), and the housing (100) is sleeved on the driving shaft (310); and A signal trigger component (400) is fixed on a driving shaft (310); the signal trigger component (400) is provided with a plurality of magnet areas (430), and adjacent magnet areas (430) are isolated from each other; a magnet (420) is provided in the magnet area (430), and a Hall signal is generated through relative movement between the magnet (420) and the Hall element (210).

2. The encoder according to claim 1, characterized in that The magnets (420) are evenly distributed in the signal trigger component (400) along the circumference of the drive shaft (310), and the magnets (420) in adjacent magnet areas (430) have opposite magnetic properties.

3. The encoder according to claim 1, characterized in that The signal generating component (200) comprises a PCBA board, the Hall element (210) is arranged on the PCBA board, the PCBA board is also provided with a signal line, and the signal line passes through a cable outlet provided on the housing (100) and is connected to an external device.

4. The encoder according to claim 1, characterized in that The signal trigger component (400) comprises a fixing member (410), a connection hole is provided in the middle of the fixing member (410), and the fixing member (410) is provided with a plurality of partitions, and the magnet area (430) is separated by the partitions.

5. The encoder according to claim 1, characterized in that The driving assembly (300) further comprises a motor body, and the driving shaft (310) is connected to the driving end of the motor body and is driven to rotate by the motor.

6. The encoder according to claim 1, characterized in that The magnet area (430) is provided with at least one magnetic hole (431), and the magnet (420) is embedded and fixed in the magnetic hole (431).

7. The encoder according to claim 1, characterized in that When there are multiple Hall elements (210), the multiple Hall elements (210) are arranged along the circumference of the signal generating component (200).

8. The encoder according to claim 1, characterized in that The driving assembly (300) comprises a motor body (320), the motor body (320) is arranged inside the housing (100), and the motor body (320) is drivingly connected to the driving shaft (310).

9. The encoder according to claim 1, characterized in that The housing (100) comprises a first fixing seat, a second fixing seat, and a third fixing seat, the first fixing seat fixing the motor, the second fixing seat fixing the PCBA board, and the third fixing seat fixing the magnetic seat.

10. A motor, characterized in that: An encoder comprising any one of claims 1-9.

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