CN102200540B - Detection module for rotary spindles - Google Patents
Detection module for rotary spindles Download PDFInfo
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- CN102200540B CN102200540B CN 201110039800 CN201110039800A CN102200540B CN 102200540 B CN102200540 B CN 102200540B CN 201110039800 CN201110039800 CN 201110039800 CN 201110039800 A CN201110039800 A CN 201110039800A CN 102200540 B CN102200540 B CN 102200540B
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Abstract
The invention discloses a detection module for rotary spindles, which comprises a magnet fixing seat, at least a Hall element and a circuit board, wherein the magnet fixing seat is used for fixing at least a precision inductive magnet, and the magnet fixing seat is fixed on a rotary spindle; the Hall element is used for inducting the magnetic poles of the precision inductive magnet, and fixed at a fixing position adjacent to the magnet fixing seat; and the circuit board is coupled with the Hall element, and a circuit layout for receiving the inductive signals of the Hall element is preset on the circuit board. Therefore, the important components such as the Hall element, the precision inductive magnet, the circuit board and the like for detecting the rotary spindle are integrated according to a modularization concept, thereby achieving the purpose of easily installing a detection module on the rotary spindle.
Description
Technical field
The present invention is relevant with the rotary main shaft detection, refers in particular to a kind of important documents such as the relevant Hall element of rotary main shaft, accurate induced magnet, circuit board that will detect and is integrated with the modularity concept, is easy to detect the purpose that module is installed on rotary main shaft thereby reach.
Background technology
Some use the hall sensing element as follows in the patent documentation of motor:
No. the 483229th, TaiWan, China patent announcement discloses and load onto two Hall sensors in single-phase DC brushless motor, is used for the sense of rotation of sensing motor spindle.When motor is braked, judge by the signal that two Hall sensors obtain whether the sense of rotation of motor produces reverse, when reverse taking place, then stop the output of motor driver, allow motor is static to get off.
No. the 513004th, TaiWan, China patent announcement, the magnetic flux change of rotor magnetite when exposure is worked with Hall element induction brushless motor, export suitable induced voltage to the driving circuit of motor by the variation of this magnetic flux of induction, this driving circuit is then done suitable work control by the induced voltage that this Hall element is exported to the DC Brushless Motor of connect control.Described work control comprises that two Hall elements respond to the induced voltage that obtains, and by the choosing of suitable high and low current potential, through the processing of circuit, obtains the third phase voltage of required this DC Brushless Motor of control of driving circuit respectively.
TaiWan, China patent announcement I251396 number; disclose motor two Hall sensors are set; these two sensing elements can not sense the intersection of the rotor N-S utmost point simultaneously; during therefore as if motor starting; one of them sensing element is in rotor N-S utmost point intersection; and make rotor produce jitter phenomenon, then can be continued to be in a certain position by the signal that another sensing element senses accurate and learn that the power supply that can turn-off motor by this avoids damaging with the protection motor.
TaiWan, China patent announcement I273391 number discloses servo motor and has angle sensing monitoring device.This angle sensing monitoring device comprises the magnetic element of being located at this rotor, and two be located at this stator, but and the Hall element of the changes of magnetic field that produces of this magnetic element of sensing.One control device is used for accepting the feedback signal of these Hall element outputs, and cooperates the computing method of this twiddle factor to handle this feedback signal, and the feedback signal of last comparison process is controlled signal to determine to export to the driving signal of this rotor with the outside.
TaiWan, China patent announcement I302401 number, disclose one with a position of magnetic pole of the sensing module sensing motor that Hall element was constituted to produce a sensing signal; One skew module system produces a phase pushing figure; Correcting module system receives this sensing signal and this phase pushing figure, and produces phase place adjustment signal according to this sensing signal and this phase pushing figure; This drives module system and receives this phase place adjustment signal, and produces a drive current to drive this motor according to this phase place adjustment signal.
TaiWan, China patent announcement M294775 number, exposure motor overcurrent protection comprises one and detects unit, a driver element, and a control module.This detects the unit and comprises that one is arranged at the magnetic patch of this rotating shaft side face, and one is arranged at this rotating shaft side and can be to Hall element that should magnetic patch.This driver element is to be electrically connected between this control port and control module.When this motor operation; this magnetic patch and Hall element are at once just exporting a pulse signal via this Hall element each time; if this pulse signal is done tired increasing in the unit interval after; do not reach the default rotational speed criteria value of this controller; then this control module can stop this motor running via this driver element, can not have fault to produce because electric current raises to protect this motor.
One is applied to the example of electric machine with hall sensor, discloses in M363738 number bulletin of the novel patent of TaiWan, China document.This case is the electric machine with Hall element, include rotor and at least one Hall element that a stator, is sheathed on the stator outside, rotor is provided with most permanent magnet poles, wherein stator outwards convexes with most the coiling teeth that are arranged with coil from the axle center, adjacent two coiling between cog are provided with a spaced teeth that does not wind the line, and at least one spaced teeth is toward axially being convexly equipped with a support, in conjunction with a circuit board, circuit board is provided with at least one Hall element in order to the position of the permanent magnet poles of sensing rotor on the support.
Except motor applications Hall element inductiopn rotor position of rotation, photoelectric encoder (rotary) also is widely used on the machining spindle that rotates mechanical axis or processing machine of rotor sensing at motor, propulsion system, does the detection of speed or angle (position).Use the advantage of photoelectric encoder to be to be easy to realize miniaturization, sensing length is longer.But because rotary encoder belongs to precision components, so be not suitable for the turning axle with height vibratility.
More than each previous case roughly disclosed the magnetic element of being located at the motor shaft side face, the magnetic field that this magnetic element of sensing produces or the Hall element of pole change, and the control device that receives the output signal of this Hall element.Though each previous case does not disclose installation method and the structure of magnetic element, Hall element, control device, but ripe this operator knows, the circuit board of each element and control device is other independent individual of branch, and need dismantle motor case and inner spare part when installing, so mounting complexity is relative with difficulty improves.
Summary of the invention
The technical matters that the present invention mainly solves provides a kind of detection module of rotary main shaft, it mainly is will detect important documents such as the Hall element of rotary main shaft, accurate induced magnet, circuit board to be integrated with the modularity concept, reaches to reduce the purpose that the simple and easy means of assembling degree of difficulty are installed on rotary main shaft.
In addition, the conventional permanent magnet brushless motor is in order to magnet and the Hall element of detection rotor position of rotation, also can be built to place modularity of the present invention textural, makes the installation of the associated component that rotor-position detects be able to summary accordingly.
For solving the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of detection module of rotary main shaft, wherein: comprise
One magnet holder is fixed in a rotary main shaft;
One accurate induced magnet is fixed in this magnet holder; This precision induced magnet has most N, S magnetic pole, and the width system of this N, S magnetic pole is less than 3mm;
The Hall element of this precision induced magnet of at least one induction is fixed on a fixed position of adjacent this magnet holder;
One with the circuit board of this Hall element coupling, this circuit board is preset with the circuit layout that receives this Hall element sensor signal.
Wherein, this magnet holder has articulated section, center and an accurate induced magnet fixed part; This articulated section, center pivot cover is fixed in this rotary main shaft; This precision induced magnet fixed part is in order to fixing described accurate induced magnet.
Wherein, the fixed position of this Hall element system is formed on the Hall element holder; And a fixed position of adjacent this Hall element is fixed in this circuit board system.
Wherein, this Hall element holder is according to the default Hall element groove of usage quantity and position of this Hall element, and each Hall element groove holds fixes a Hall element.
Wherein, the fixed position of this Hall element system is formed on this circuit board.
Wherein, comprise one and define this rotary main shaft magnet at zero point at zero point, this, magnet was located at this magnet holder at zero point, the Hall element of responding to magnet at this is arranged at a fixed position of contiguous this magnet holder at zero point, and this circuit board is preset with the circuit layout of the Hall element signal that receives induction magnet at this at zero point.
Wherein, this precision induced magnet comprises one and defines this rotary main shaft magnet at zero point at zero point, the Hall element of responding to magnet at this is arranged at a fixed position of contiguous this magnet holder at zero point, and this circuit board is preset with the circuit layout of the Hall element signal that receives induction magnet at this at zero point.
Wherein, this magnet holder comprises a rotor magnet fixed part; Rotor rotation with particular pole logarithm corresponding with the motor number of poles detects magnet and is fixed in this rotor magnet fixed part; Be arranged at a fixed position of contiguous this magnet holder in order to the Hall element of responding to this rotor rotation detection magnet; This circuit board is preset with and receives the circuit layout that this rotor rotation of induction detects the Hall element signal of magnet.
Wherein, this precision induced magnet is doughnut structure, and the pole orientation system of this N, S magnetic pole magnetizes in the side end face of this doughnut structure axis direction.
Wherein, this precision induced magnet is doughnut structure, and the annular end face in this doughnut structure is magnetized in the pole orientation system of this N, S magnetic pole.
The invention has the beneficial effects as follows: in sum, the invention describes rotary main shaft is detected the feasibility that required Hall element, magnet and circuit board are integrated with the modularity concept, and this modularity object is the best to be installed on the motor shaft end, advantage with simple and convenient assembly makes accordingly and utilizes the magnetic field induction signal to control the easier realization of means that motor reaches specific purpose.
Modularity of the present invention structure also can be applicable to the rotary main shaft of electric machine except the rotor that is applied to motor, propulsion system rotate mechanical axis, or on the machining spindle of processing machine, as the detection of speed or the angle (position) of each rotary main shaft.
Description of drawings
Fig. 1 is installed on the sectional view of motor for detection module first embodiment of rotary main shaft of the present invention.
Fig. 2 is the right side view of Fig. 1.
Fig. 3 is the front elevation of magnet holder first embodiment of the present invention.
Fig. 4 is the sectional view of magnet holder first embodiment of the present invention.
Fig. 5 is the front elevation of Hall element holder of the present invention.
Fig. 6 is the sectional view of Hall element holder of the present invention.
Fig. 7 is the front elevation of magnet holder second embodiment of the present invention.
Fig. 8 is the sectional view of magnet holder second embodiment of the present invention.
Fig. 9 is installed on the sectional view of motor for detection module second embodiment of rotary main shaft of the present invention.
Figure 10 is the right side view of Fig. 9.
Figure 11 is the accurate induced magnet pole orientation of the present invention synoptic diagram one.
Figure 12 is the accurate induced magnet pole orientation of the present invention synoptic diagram two.
The primary clustering symbol description
The side end face of 10 accurate induced magnet 11 doughnut structures
The annular end face 20 magnet holders of 12 doughnut structures
Articulated section, 21 center 211 pivoted holes
22 accurate induced magnet fixed part 23 rotation direction position limiting structures
27 rotation direction position limiting structures, 30 Hall elements
40 Hall element holders, 41 Hall element grooves
42 location divisions, 43 screw elements
51 rotating shafts of 50 motors
52 ends, 53 shells
60 circuit boards, 61 location divisions
62 screw elements, 70 rotor magnet fixed parts
The rotation of 71 rotors detects magnet 72 rotation direction position limiting structures
73 Hall elements magnet at 80 zero point
81 Hall element W magnet pole widths
Embodiment
By describing technology contents of the present invention, structural attitude in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.
For ease of explanation the present invention represented central idea in foregoing invention content one hurdle, express with specific embodiment now.Various different Object Sides are described in the ratio that is suitable for illustrating, size, deflection or displacement among the embodiment, but not are drawn in the ratio of actual components, close chat earlier bright.And in the following description, similar elements is to represent with identical numbering.
Fig. 1 and Fig. 2 disclose detection module first embodiment of rotary main shaft of the present invention, this embodiment cooperates motor to explain, but not as limit, except motor, the present invention also can be applicable to the rotary main shaft of electric machine, propulsion system rotate mechanical axis, or the machining spindle of processing machine, close chat earlier bright.The detection module of this rotary main shaft comprises: a magnet holder 20 in order to fixing accurate induced magnet 10, respond to the circuit board 60 that the Hall element 30, of these precision induced magnet 10 magnetic poles is coupled with above-mentioned each Hall element 30.
Above-mentioned magnet holder 20 is fixed in the end 52 of a motor 50 rotating shafts 51.As Figure 11 and Figure 12, this precision induced magnet 10 is doughnut structure in an embodiment, have most N, S magnetic pole, the pole orientation of N, S is magnetisable in the side end face 11 of this doughnut structure axis direction (as Figure 11), or magnetizes the annular end face 12 (as Figure 12) in this doughnut structure.Further define the width W of each N, S magnetic pole in embodiments of the present invention, this width system is less than 3mm.
The comparatively detailed structure of above-mentioned magnet holder 20 is exposed in Fig. 3 and Fig. 4.In embodiments of the present invention, this magnet holder 20 has articulated section, a center 21 and one accurate induced magnet fixed part 22.The pivoted hole 211 at a perforation center is established in this articulated section, center 21.This magnet holder 20 is the end 52 that is placed in these motor 50 rotating shafts 51 with these pivoted hole 211 pivots, and this end 52 has the spacing relation of rotation direction with this articulated section, center 21.The rotation direction position limiting structure 23 of reaching the spacing relation of this rotation direction is the relative binding site that is arranged on this end 52 and this articulated section, center 21, comprises groove and the key of combination relatively.In legend, the end 52 of these motor 50 rotating shafts 51 is to convexedly stretch in motor case 53, and accordingly, the installation of this magnet holder 20 does not namely relate to the group of tearing open of motor case, body and inner spare part, has the installation convenience.But enforcement of the present invention is not as limit, and this magnet holder 20 also can be installed on motor inside.
This precision induced magnet 10 is fixed in this precision induced magnet fixed part 22, this precision induced magnet fixed part 22 has the spacing relation of rotation direction with this precision induced magnet 10, the rotation direction position limiting structure 27 of reaching the spacing relation of this rotation direction is the relative binding site that is arranged on this precision induced magnet fixed part 22 and this precision induced magnet 10, including but not limited to groove and the protuberance of combination relatively.
Above-mentioned Hall element 30 is fixed on a fixed position of adjacent this magnet holder 20.In embodiments of the present invention, this fixed position system is implemented on the Hall element holder 40, and this Hall element holder 40 is fixed in the tail end of these motor 50 shells 53.
The comparatively detailed structure of above-mentioned Hall element holder 40 is exposed in Fig. 5 and Fig. 6.In embodiments of the present invention, this Hall element holder 40 is according to the default Hall element groove 41 of the usage quantity of Hall element, and each Hall element groove 41 holds fixes a Hall element 30.This Hall element holder 40 has a location division 42, illustrated example is worn lock in order to do confession one screw element 43 in 42 enforcements, one screw hole position in the location division, this Hall element holder 40 is fixed in shell 53 tail ends of this motor 50, this Hall element 30 is positioned at the position of these precision induced magnet 10 magnetic poles of induction, sends signal to circuit board 60 after the Hall element 30 induction pole change.Fixed position and fixed form about this Hall element holder 40 are described including but not limited to legend.
Foregoing circuit plate 60 is preset with the circuit layout that receives these Hall element 30 sensor signals.This circuit board 60 is arranged at a fixed position of adjacent this Hall element 30.The structure that foregoing circuit plate 60 is comparatively detailed is exposed among Fig. 1, and this circuit board 60 has at least one location division 61, and illustrated example is worn lock for a screw element 62 in 61 enforcements, one screw hole position in the location division, and this circuit board 60 is fixed in this Hall element holder 40.Fixed position and fixed form about this circuit board 60 are described including but not limited to legend, and this circuit board 60 also can be fixed in the shell 53 of this motor 50.
As Fig. 7 to Figure 10, second embodiment of this magnet holder 20 ties up on the main body of first embodiment framework one rotor magnet fixed part 70 again.Rotor rotation with particular pole logarithm (as 2P, 4P, 8P etc.) corresponding with the motor number of poles detects magnet 71 and is fixed in this rotor magnet fixed part 70.This rotor magnet fixed part 70 and the rotation of this rotor detect between the magnet 71 has the spacing relation of rotation direction, the rotation direction position limiting structure 72 of reaching the spacing relation of this rotation direction is to be arranged on the relative binding site that the rotation of this rotor detects magnet 71 and this rotor magnet fixed part 70, including but not limited to the groove protuberance of combination relatively.Be a fixed position that is arranged on contiguous this magnet holder 20 in order to respond to the Hall element 73 that the rotation of this rotor detects magnet 71, this fixed position is including but not limited to being arranged on this circuit board 60.This circuit board 60 is preset with the circuit layout that receives these Hall element 73 sensor signals.This rotor rotation of Hall element 73 inductions detects the pole orientation of magnet 71, sends different signals to this circuit board 60 according to pole orientation.
In addition, one in order to defining the magnet 80 at zero point of rotary main shaft null position, magnetized by the rotation direction position limiting structure 27 of this precision induced magnet 10 and realize.In embodiments of the present invention, this is the implementation an of the best, but not as limit.Respond to this magnet Hall element 81 of 80 is a fixed position that is arranged on contiguous this magnet holder 20 at zero point, and this fixed position is including but not limited to being arranged on this circuit board 60.This circuit board 60 is preset with the circuit layout that receives these Hall element 81 sensor signals.
In sum, above-described embodiment has been described rotary main shaft has been detected the feasibility that required Hall element, magnet and circuit board are integrated with the modularity concept, and this modularity object is the best to be installed on the motor shaft end, advantage with simple and convenient assembly makes accordingly and utilizes the magnetic field induction signal to control the easier realization of means that motor reaches specific purpose.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in the scope of patent protection of the present invention.
Claims (8)
1. the detection module of a rotary main shaft is characterized in that: comprise
One magnet holder is fixed in a rotary main shaft; One accurate induced magnet is fixed in this magnet holder; This precision induced magnet has most N, S magnetic pole, and the width of this N, S magnetic pole is less than 3mm;
The Hall element of this precision induced magnet of at least one induction is fixed on a fixed position of adjacent this magnet holder;
One with the circuit board of this Hall element coupling, this circuit board is preset with the circuit layout that receives this Hall element sensor signal;
This magnet holder comprises a rotor magnet fixed part; Rotor rotation with particular pole logarithm corresponding with the motor number of poles detects magnet and is fixed in this rotor magnet fixed part; Be arranged at a fixed position of contiguous this magnet holder in order to the Hall element of responding to this rotor rotation detection magnet; This circuit board is preset with and receives the circuit layout that this rotor rotation of induction detects the Hall element signal of magnet; This magnet holder has articulated section, center and an accurate induced magnet fixed part; This articulated section, center pivot cover is fixed in this rotary main shaft; This precision induced magnet fixed part is in order to fixing described accurate induced magnet.
2. the detection module of rotary main shaft according to claim 1, it is characterized in that: this fixed position of responding to the Hall element of described accurate induced magnet is formed on the Hall element holder; And this circuit board is fixed in a fixed position of the Hall element of the described accurate induced magnet of adjacent this induction.
3. the detection module of rotary main shaft according to claim 2, it is characterized in that: this Hall element holder is according to this default Hall element groove of usage quantity and position of responding to the Hall element of described accurate induced magnet, and each Hall element groove holds fixes a Hall element.
4. the detection module of rotary main shaft according to claim 1, it is characterized in that: this fixed position of responding to the Hall element of described accurate induced magnet is formed on this circuit board.
5. the detection module of rotary main shaft according to claim 1, it is characterized in that: comprise one and define this rotary main shaft magnet at zero point at zero point, this, magnet was located at this magnet holder at zero point, the Hall element of responding to magnet at this is arranged at a fixed position of contiguous this magnet holder at zero point, and this circuit board is preset with the circuit layout of the Hall element signal that receives induction magnet at this at zero point.
6. the detection module of rotary main shaft according to claim 1, it is characterized in that: this precision induced magnet comprises one and defines this rotary main shaft magnet at zero point at zero point, the Hall element of responding to magnet at this is arranged at a fixed position of contiguous this magnet holder at zero point, and this circuit board is preset with the circuit layout of the Hall element signal that receives induction magnet at this at zero point.
7. the detection module of rotary main shaft according to claim 1, it is characterized in that: this precision induced magnet is doughnut structure, the pole orientation of this N, S magnetic pole is magnetized in the side end face of this doughnut structure axis direction.
8. the detection module of rotary main shaft according to claim 1, it is characterized in that: this precision induced magnet is doughnut structure, the pole orientation of this N, S magnetic pole is magnetized the annular end face in this doughnut structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110039800 CN102200540B (en) | 2011-02-17 | 2011-02-17 | Detection module for rotary spindles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110039800 CN102200540B (en) | 2011-02-17 | 2011-02-17 | Detection module for rotary spindles |
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| Publication Number | Publication Date |
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| CN102200540A CN102200540A (en) | 2011-09-28 |
| CN102200540B true CN102200540B (en) | 2013-09-11 |
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| CN 201110039800 Active CN102200540B (en) | 2011-02-17 | 2011-02-17 | Detection module for rotary spindles |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374945A (en) * | 2014-11-07 | 2015-02-25 | 上海交通大学 | Vehicle speed measurement device and method |
| CN106370882A (en) * | 2016-10-19 | 2017-02-01 | 深圳市鑫精工平衡机有限公司 | Rotation speed sensor for full-automatic balancing machine detection system |
| KR102460051B1 (en) * | 2017-02-22 | 2022-10-27 | 스택폴 인터내셔널 엔지니어드 프로덕츠, 엘티디. | Pump assembly having a controller including a circuit board and 3d rotary sensor for detecting rotation of its pump |
| JP7036654B2 (en) * | 2018-04-06 | 2022-03-15 | タカノ株式会社 | Rotary solenoid switching speed detector |
| CN113364217A (en) * | 2020-03-05 | 2021-09-07 | 南京德朔实业有限公司 | Rotor position detection device |
| CN112910184A (en) * | 2021-03-19 | 2021-06-04 | 深圳鹏行智能有限公司 | Power module and robot |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6124710A (en) * | 1998-11-13 | 2000-09-26 | Cts Corporation | Rotary magnetic encoder using hall effect for detecting revolution of a shaft |
| KR20010028911A (en) * | 1999-09-28 | 2001-04-06 | 이형도 | Capstan motor |
| CN201286058Y (en) * | 2008-09-27 | 2009-08-05 | 巨铠实业股份有限公司 | Motor apparatus having Hall sensor |
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