CN105091736A - Manual pulse generation apparatus - Google Patents
Manual pulse generation apparatus Download PDFInfo
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- CN105091736A CN105091736A CN201510242382.3A CN201510242382A CN105091736A CN 105091736 A CN105091736 A CN 105091736A CN 201510242382 A CN201510242382 A CN 201510242382A CN 105091736 A CN105091736 A CN 105091736A
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Abstract
The invention provides a manual pulse generation apparatus which can detects rotation and rotation direction of a rotating body with a high sensitivity and can appropriately output pulse. In a sensor unit (10) of the manual pulse generation apparatus, if a rotating body (6) is manually operated, the rotation is detected via a sensor portion (8), and a pulse is generated based on the detection result. The sensor portion (8) comprises a permanent magnet (65) which links with the rotating body (6), rotates, and detects the rotation of the permanent magnet (65) through a magneto-resistive component (57) which is retained to a support body (200). With respect to the sensor portion (8) on a back side, magnetic shielding is conducted through a sensor housing (52) which is formed of magnetic materials. A sensor outer cover (51) is made of resin and is arranged on an operation surface side (L2) with respect to the sensor portion (8).
Description
Technical field
The present invention relates to a kind of manually operation and carry out the manual pulse generating unit of pulsing.
Background technology
For setting the manual pulse generating unit of the confirming operation of processing conditions or electronic equipment etc. to numerically-controlled machines such as machining centers when manually operation makes the rotary bodies such as index dial rotate, corresponding to the anglec of rotation pulsing of rotary body.Once someone proposed in so manual pulse generating unit, used optical sensor (with reference to patent documentation 1) when detecting the rotation of rotary body.
Patent documentation 1: Japanese Patent Publication 2-110817 publication
But, when structure as described in Patent Document 1 employs optical sensor like that, if there is sensor to be attached with wet goods foreign matter, the problem of error detection can be there is.Particularly use under the environment being provided with machining center etc. because manual pulse generating unit is many, the possibility of therefore adhering to wet goods foreign matter is larger.
Summary of the invention
In view of above problem, even if problem of the present invention is to provide and is a kind ofly attached with the manual pulse generating unit that error detection also not easily occurs wet goods.
In order to solve above-mentioned problem, manual pulse generating unit of the present invention comprises: supporting mass; Rotary body, described rotary body can be supported on described supporting mass rotatably, and manually operation rotates; And sensor part, described sensor part detects the rotation of described rotary body, described manual pulse generating unit is according to the testing result pulsing of described sensor part, the feature of described manual pulse generating unit is, described sensor part comprises: permanent magnet, and described permanent magnet and described rotary body link and rotate; And magnetoresistive element, described magnetoresistive element is held in described supporting side.
In the present invention, if manually operation makes rotary body rotate, then described rotation is detected by sensor part, according to testing result pulsing.At this, sensor part has and links with rotary body and the permanent magnet that rotates, and detects the rotation of described permanent magnet by the magnetoresistive element being held in supporting side.Therefore, different from optical sensor, even if when sensor part is attached with wet goods foreign matter, the rotation (rotation of rotary body) of permanent magnet also suitably can be detected.
In the present invention, preferably relative to described sensor part, the side of carrying out manually operated side contrary to described rotary body is being provided with magnetic shield.Although it is more the side contrary with carrying out manually operated side of manual pulse generating unit to be installed on by magnet the situation that machining center etc. carries out operating, even if also impact on sensor part can be relaxed by magnetic shield under these circumstances.
In the present invention, preferred described supporting mass has the sensor housing containing described sensor part, described sensor housing have with described rotary body is carried out contrary side, manually operated side base plate and from described base plate to carrying out the extension of manually operated side to described rotary body and surrounding the cylindrical body part of the surrounding of described sensor part, described base plate forms described magnetic shield by magnetic sheet.According to described structure, effectively magnetic shielding can be carried out to sensor part.
In the present invention, preferred described cylindrical body part forms magnetic shield by magnetic sheet.According to described structure, effectively magnetic shielding can be carried out to sensor.
In the present invention, preferred described supporting mass has the sensor enclosure of the opening of closed described cylindrical body part, and described sensor enclosure is formed by nonmagnetic substance.According to described structure, sensor enclosure can be formed by the light and material of cheapness.
In the present invention, preferred described base plate and described cylindrical body part form, and whole described sensor housing is made up of magnetic material and becomes magnetic shield.According to described structure, effectively magnetic shielding can be carried out to sensor part.
In the present invention, preferred described sensor enclosure has cylindrical portion and the plectane portion expanding with the end side of described rotary body being carried out to contrary side, manually operated side in described cylindrical portion, described plectane portion is combined with described cylindrical body part in the mode of the opening closing described cylindrical body part, maintain circular bearing in the inner side of described cylindrical portion, by described bearing, described rotary body is supported as rotating.According to described structure, sensor enclosure can be utilized by rotary body supporting for rotating.
In the present invention, preferred described magnetoresistive element has A phase sense magnetic pattern and generates the B phase that phase place deviate from the signal in 1/4 cycle relative to the signal that described A phase sense magnetic pattern generates feels magnetic pattern, and described A phase is felt magnetic pattern and described B phase and felt magnetic pattern and comprise the first fragment respectively, to be separated second fragment in 1/2 cycle and to be separated the 3rd fragment in 1/2 cycle relative to described first fragment at the opposite side in described relative movement direction relative to described first fragment in the side in the relative movement direction with described permanent magnet.According to described structure, the rotation of rotary body can be detected by magnetoresistive element, and the coercitive impact owing to feeling magnetic pattern can be suppressed and produce accuracy of detection decline.Further, because A phase sense magnetic pattern and B phase sense magnetic pattern have the second fragment and the 3rd fragment, respectively therefore, it is possible to shorten the size of the circumference of magnetoresistive element in the both sides of the first fragment.
In the present invention, manual pulse generating unit can adopt following structure: described first fragment comprises the 4th fragment and is separated the 5th fragment in 1/4 cycle relative to described 4th fragment in the side in described relative movement direction, described second fragment was separated for 1/2 cycle relative to described 5th fragment in the side in described relative movement direction, and described 3rd fragment was separated for 1/2 cycle relative to described 4th fragment at the opposite side in described relative movement direction.
In the present invention, preferred described A phase sense magnetic pattern has+A mutually with sense magnetic pattern,-the A of the signal of anti-phase is generated mutually with sense magnetic pattern with sense magnetic pattern mutually relative to described+A, described B phase sense magnetic pattern has+B and generates-the B of the signal of anti-phase mutually with sense magnetic pattern with sense magnetic pattern with sense magnetic pattern mutually with relative to described+B mutually, described+A is mutually with sense magnetic pattern, described-A is mutually with sense magnetic pattern, described+B comprises described first fragment with sense magnetic pattern mutually with sense magnetic pattern and described-B mutually, described second fragment, described 3rd fragment, described 4th fragment and described 5th fragment.According to described structure, can suppress to make detection signal produce distortion etc. due to the coercive force of the sense magnetic pattern of magnetoresistive element.
In the present invention, preferably described permanent magnet outer peripheral face equiangularly between be interposed between circumference and alternately form S pole and N pole, described magnetoresistive element is opposed with the outer peripheral face of described permanent magnet, described 4th fragment and described 5th fragment and described S pole and described N extremely in one extremely opposed, described second fragment and described 3rd fragment and described S pole and described N extremely in another is extremely opposed.According to described structure, even if the coercive force of the sense magnetic pattern of magnetoresistive element has the characteristics such as polarity is asymmetric, detection signal also can be suppressed to produce distortion etc.
In the present invention, preferably between described rotary body and described supporting mass, be provided with snap fastener, described snap fastener has and is positioned at described rotation side and the spring members having the engaging gear on multiple tooth edge, the abutment abutted with the outer peripheral face of described engaging gear and the outer peripheral face that described abutment is pressed into described engaging gear in outer peripheral face circumferential array.According to described structure, can rotary body be made to stop in the angle position of specifying by the snap fastener with engaging gear and axle.
In the present invention, the rotation direction that preferred described abutment has along described engaging gear extends and the abutting part abutted with described tooth.According to described structure, abutment is larger with the contact area of the tooth engaging gear.Therefore, it is possible to reliably obtain engaging sense, and the wearing and tearing etc. of tooth can be suppressed.
In the present invention, preferred described abutment is the axle of the pole shape extended along the rotation direction of described engaging gear.According to described structure, no matter be when axle is towards which direction, outer peripheral face (abutting part) all abuts with tooth.
In the present invention, preferred described abutting part has the length of more than the width of the described axis direction of described tooth, abuts with the entirety of the described axis direction of described tooth.According to described structure, compared with the situation that abutment abuts with a part for the axis direction of tooth, larger with the contact area of tooth.Therefore, it is possible to suppress the wearing and tearing etc. of tooth.
In the present invention, the spring pressure adjusting mechanism of the spring pressure for adjusting described spring members is preferably provided with at described supporting mass.According to described structure, can be suitable condition by the load set of snap fastener.And, the situation of the structure that the abutment of the abutting part of the rotation direction extension had along engaging gear is abutted with engaging gear is necessary suitably to set abutting pressure especially, as long as arrange spring pressure adjusting mechanism, just can suitably set abutting pressure.
In the present invention, preferred described spring pressure adjusting mechanism has the screw component that can be bearing in described supporting side to the bending direction of described spring members movably.According to described structure, easily can adjust the load of snap fastener, and easily assemble snap fastener.
In the present invention, preferred described spring members is volute spring, becomes the end face that the end that forms described helical spring wire rod is not outstanding to described abutment in described volute spring with the part that described abutment abuts.According to described structure, due to volute spring and abutment can be suppressed to block, therefore, it is possible to adopt the structure making volute spring and abutment directly contact.
In the present invention, the time point that the signal of the A phase preferably detected by the described sensor part time point consistent with the level of the signal of B phase invades the groove in described multiple tooth between two teeth that circumference is adjacent to greatest extent with described axle is consistent.According to described structure, under the state making rotary body stop by snap fastener, the signal of A phase can be made consistent with the level of the signal of B phase.
In the present invention, the angular position adjusting mechanism of at least one in the angle position of the described permanent magnet for adjusting described rotation side, the angle position of described engaging gear on described rotation side and the angle position of described abutment is preferably provided with.According to described structure, the time point obtaining engaging sense can be made to overlap with the time point exporting pulse.
In the present invention, the angular position adjusting mechanism of at least one in the angle position of the angle position of the described permanent magnet for adjusting described rotation side and the described magnetoresistive element on described supporting side is preferably provided with.According to described structure, the angle position of rotary body can be made to overlap with the time point exporting pulse.
Invention effect
In manual pulse generating unit involved in the present invention, if manually operation makes rotary body rotate, then detect described rotation by sensor part, according to testing result pulsing.At this, sensor part has and links with rotary body and the permanent magnet that rotates, and detects the rotation of described permanent magnet by the magnetoresistive element being held in supporting side.Therefore, different from optical sensor, even if when sensor part is attached with wet goods foreign matter, the rotation (rotation of rotary body) of permanent magnet also suitably can be detected.
Accompanying drawing explanation
Fig. 1 is the key diagram that the outward appearance applying manual pulse generating unit of the present invention is shown.
Fig. 2 is the exploded perspective view applying manual pulse generating unit of the present invention.
Fig. 3 is the exploded perspective view of the sensor unit for applying manual pulse generating unit of the present invention.
Fig. 4 is the cut-open view of the sensor unit for applying manual pulse generating unit of the present invention.
Fig. 5 (a), Fig. 5 (b) are the key diagrams of the magnetoresistive element for applying manual pulse generating unit of the present invention.
Fig. 6 (a), Fig. 6 (b) and Fig. 6 (c) are the key diagrams of the detection signal of magnetoresistive element for applying manual pulse generating unit of the present invention etc.
Fig. 7 (a), Fig. 7 (b) are the key diagrams of the snap fastener of sensor unit for applying manual pulse generating unit of the present invention etc.
Fig. 8 is the stereographic map of the axle retainer for the snap fastener shown in Fig. 7 (a), Fig. 7 (b).
Fig. 9 is for applying the stereographic map of the permanent magnet of the sensor unit of manual pulse generating unit of the present invention etc. from rear side observation.
(symbol description)
1 manual pulse generating unit;
2 links;
6 rotary bodies;
7a snap fastener;
7b spring pressure adjusting mechanism;
7c angular position adjusting mechanism;
8 sensor part;
10 sensor units;
11 shells;
110 operating surfaces;
12 first case members;
13 second housing parts;
14 index dials;
15 circuit boards;
17 cables;
173 connectors;
18 equipment;
51 sensor enclosure;
52 sensor housings;
The base plate of 521 sensor housings;
The cylindrical body part of 522 sensor housings;
53 axle retainers;
537 axle support holes;
538 holes;
539 screws
54 sensor base plates;
56 magnetic sensor elements;
57 magnetoresistive elements;
570A, 570B feel magnetic pattern;
61 turning axles;
62 magnet retainers;
63 engaging gears;
630 outer peripheral faces;
633 teeth;
634 grooves;
64 fixed heads;
643 elongated holes;
65 permanent magnets;
70 abutment;
701 abutting parts;
71 axles;
75 spring members;
76 volute springs;
81a, 81b signal;
82a, 82b rect.p.;
100 apparatus main bodies;
200 supporting masses;
L rotation center axis;
L1 operating surface side;
L2 rear side;
S1 first fragment;
S2 second fragment;
S3 the 3rd fragment;
S4 the 4th fragment.
Embodiment
The manual pulse generating unit of the present invention with reference to accompanying drawing application.
(one-piece construction of manual pulse generating unit)
Fig. 1 is the key diagram that the outward appearance applying manual pulse generating unit 1 of the present invention is shown.Fig. 2 is the exploded perspective view applying manual pulse generating unit 1 of the present invention.In addition, in Fig. 2 etc., operating surface side is labeled as L1 by the direction (rotation center axis L direction) that the rotation center axis L of rotary body 6 extends, rear side is labeled as L2.
In the manual pulse generating unit 1 shown in Fig. 1 and Fig. 2, be provided with at the front surface of apparatus main body 100 index dial 14 that rotation process is carried out in manual operation, around index dial 14, mark has the mark 129 that reference position and polarity are shown.Index dial 14 and turning axle described later 61 etc. together form rotary body 6, and rotary body 6 is supported as rotating by supporting masses 200 such as shell 11 and sensor housings 52.The front surface of the apparatus main body 100 of formation like this is operating surface 110.
The front surface (operating surface 110) of apparatus main body 100 be provided with switch export the flat board 121 that switch bar 16a, the 16b of the attribute of pulse etc. and mark have the scale of switch bar 16a, 16b etc.Further, from the downside end outgoing cable 17 of apparatus main body 100.Cable 17 is connected by lining 174 with apparatus main body 100.Be provided with connector 173 at the end of cable 17, connector 173 is combined with the connector 181 of the equipment 18 obtaining pulse from manual pulse generating unit 1.Manual pulse generating unit 1 obtains power supply with state cable 17 being connected to equipment 18 from equipment 18.
If manual pulse generating unit 1 manually operates, index dial 14 is rotated, pulsing.Export described pulse by equipment such as numerically-controlled machine or electronic equipment 18 such as cable 17 pairs of machining centers, described pulse is used for condition setting and the confirming operation etc. of equipment 18.In the present embodiment, equipment 18 is numerically-controlled machines.Switch bar 16a, 16b are such as selecting the X-axis of numerically-controlled machine, Y-axis, Z axis and sensitivity.
As shown in Figure 2, shell 11 has first case member 12 of front-surface side (operating surface side L1) of constituent apparatus main body 100 and the second housing parts 13 of the rear side L2 of constituent apparatus main body 100.First case member 12 has the header board portion 123 of the rectangle being positioned at operating surface side L1 and four edges side plate 124 that rearwardly side L2 is outstanding from header board portion 123.Be formed with the peristome 123a being positioned at the position overlapping with index dial 14 in header board portion 123, and around peristome 123a, be formed with circular recess 123b.Second housing parts 13 are combined with the first case member 12 by screw 131 with the state covering the opening of the rear side L2 of the first case member 12.In the present embodiment, the first case member 12 and second housing parts 13 are all formed from a resin, but also can be made of metal.
Between the first case member 12 and second housing parts 13, be configured with sensor unit 10 and circuit board 15, sensor unit 10 clamps circular pad 3 and is fixed on the header board portion 123 of the first housing parts 12 by screw (omitting diagram) etc.Circuit board 15 is configured for the circuit (omitting diagram) exporting the pulse generated according to the testing result of sensor unit 10, and circuit board 15 is fixed to the header board portion 123 of the first case member 12 by screw (omitting diagram) etc.Rotary switch 152a, 152b of being connected to switch bar 16a, 16b is equiped with at circuit board 15.In addition, cable 17 is such as connected with circuit board 15 by connector 153,172.
Rotary body 6 has from the outstanding turning axle 61 of sensor unit 10, is fixed on the link 2 of turning axle 61 and is fixed on the index dial 14 of link 2 by screw 143,144.Turning axle 61 is outstanding to operating surface side L1 from the peristome 123a in the header board portion 123 being formed at the first case member 12, and index dial 14 is connected with described outshot by link 2.Therefore, if manually operate at operating surface side L1, index dial 14 is rotated, then turning axle 61 rotates.Sensor unit 10 detects the anglec of rotation of turning axle 61, makes testing result export circuit board 15 to.Consequently, circuit board 15 generates the pulse of the quantity suitable with the rotation of index dial 14, exports via cable 17.In the present embodiment, mark the scale of 100 deciles around index dial 14, using mark 129 as index, index dial 14 often advances a scale with regard to an output pulse.
(one-piece construction of sensor unit 10)
Fig. 3 is the exploded perspective view of the sensor unit 10 for applying manual pulse generating unit 1 of the present invention.Fig. 4 is the cut-open view of the sensor unit 10 for applying manual pulse generating unit 1 of the present invention.
As shown in Figure 3 and 4, sensor unit 10 has the sensor housing 52 of the cup-shaped to operating surface side L1 opening, the sensor enclosure 51 be combined with sensor housing 52 in the mode of the opening of closed sensor housing 52 and the axle retainer 53 being fixed on sensor housing 52, and sensor housing 52, sensor enclosure 51 and axle retainer 53 together forms supporting mass 200 with the shell 11 illustrated with reference to Fig. 1 etc.
Sensor housing 52 has the base plate 521 of rear side L2, the cylindrical body part 522 from the outer rim of base plate 521 cylindrical shape outstanding to operating surface side L1.Sensor enclosure 51 is formed from a resin, and has cylindrical portion 511 and plectane portion 512 expanding near the end of the rear side L2 of cylindrical portion 511.Two places that circumference in plectane portion 512 is separated to be formed with in arc-shaped two protuberances 513,514 circumferentially.In the inner side of cylindrical portion 511, circular bearing 55a, 55b are held in the position be separated on rotation L direction, and turning axle 61 can be supported on supporting mass 200 (sensor enclosure 51) rotatably by described bearing 55a, 55b.
In the inner side of sensor housing 52, for forming the circular engaging gear 63 of snap fastener 7a in being connected to turning axle 61 with heart shaped, and relative to engaging gear 63 side L2 overleaf, magnet retainer 62 is in being connected to turning axle 61 with heart shaped.Engaging gear 63 and magnet retainer 62 together form rotary body 6 with the index dial 14 etc. illustrated with reference to Fig. 1 etc.In addition, link 2 has to be fitted together to the cylindrical portion 22 of the end of the front side of turning axle 61 and the flange part 21 expanding in the front end of cylindrical portion 22.As shown in Figure 4, the mode of encountering turning axle 61 with end in the hole 23 being formed at cylindrical portion 22 is fixed with holding screw 26, thus link 2 is connected with turning axle 61.In the outer peripheral face of turning axle 61, the position that the end of holding screw 26 is encountered becomes tabular surface 618.
(structure of sensor part 8)
Fig. 5 (a), Fig. 5 (b) are the key diagrams of the magnetoresistive element 57 for applying manual pulse generating unit 1 of the present invention, and Fig. 5 (a), Fig. 5 (b) are the key diagrams of the example that magnetoresistive element 57 is shown and the key diagram of an example of sense magnetic pattern of magnetoresistive element 57 is schematically shown.Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) are the key diagrams of the detection signal of magnetoresistive element 57 for applying manual pulse generating unit 1 of the present invention etc., and Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) are the key diagrams of the key diagram of signal, the key diagram of the rect.p. of A phase and the rect.p. of B phase exported from magnetoresistive element 57.In addition, in the following description, 1 cycle of the signal shown in Fig. 6 (a) is set to λ, described 1 cycle is equivalent to the distance (distance of S pole and S pole) of the N pole shown in Fig. 5 (a) and N pole.
The sensor part 8 of the rotation for detecting turning axle 61 (rotary body 6) is configured with in the inner side of sensor housing 52, in the present embodiment, sensor part 8 is made up of with the magnetic sensor element 56 remaining on supporting side, side 200 the circular permanent magnet 65 being held in rotary body 6 (magnet retainer 62).Permanent magnet 65 is fixed on magnet retainer 62 by fixed head 64.The outer peripheral face 650 of permanent magnet 65 equiangularly between be interposed between circumference and be alternately formed with S pole and N pole.Further, in supporting mass 200, sensor base plate 54 is to be fixed on sensor enclosure 51 across the mode of protuberance 513,514, and magnetic sensor element 56 is assemblied in sensor base plate 54 by element retainer 58.In this condition, magnetic sensor element 56 is opposed with the outer peripheral face of permanent magnet 65.
In the present embodiment, magnetic sensor element 56 is magnetoresistive elements 57, as shown in Fig. 5 (a), is formed with the sense magnetic pattern formed by magnetoresistive film at device substrate 59.In the present embodiment, the A phase sense magnetic pattern 570A that magnetic pattern has the signal for generating A phase is felt and the B phase offseting the signal of the B phase in 1/4 cycle for generating phase place relative to A phase signal feels magnetic pattern 570B.Further, A phase sense magnetic pattern 570A has+A and generates-the A of the signal of anti-phase mutually with sense magnetic pattern 570A-with sense magnetic pattern 570A mutually with sense magnetic pattern 570A+ with relative to+A mutually.Further, B phase sense magnetic pattern 570B has+B and generates-the B of the signal of anti-phase mutually with sense magnetic pattern 570B-with sense magnetic pattern 570B+ mutually with sense magnetic pattern 570B+ with relative to+B mutually.Therefore, four terminals 572A+, 572A-, 572B+, 572B-are formed with at device substrate 59.And, be formed with supply lines 573e, 573f and ground wire 574 at device substrate 59, be formed with terminal 572Vcce, 572Vccf, 572GND in the end of supply lines 573e, 573f and ground wire 574 in the mode arranged side by side with terminal 572A+, 572A-, 572B+, 572B-.
As shown in Fig. 5 (a), in the magnetoresistive element 57 of present embodiment, such as+A comprises the first fragment S1 (A+) with sense magnetic pattern 570A+, is separated the second fragment S2 (A+) in 1/2 cycle and is separated the 3rd fragment S3 (A+) in 1/2 cycle relative to the first fragment S1 (A+) at the opposite side R2 of circumferential R relative to the first fragment S1 (A+) at the side R1 of circumferential R (with the relative movement direction of permanent magnet) mutually.In the present embodiment, the first fragment S1 (A+) comprises the 4th fragment S4 (A+), is separated the 5th fragment S5 (A+) in 1/4 cycle relative to the 4th fragment S4 (A+) at the side R1 of circumferential R.Therefore, second fragment S2 (A+) was separated for 1/2 cycle relative to the 5th fragment S5 (A+) at the side R1 of circumferential R, and the 3rd fragment S3 (A+) was separated for 1/2 cycle relative to the 4th fragment (A+) at the opposite side R2 of circumferential R.At+the A so formed mutually with in sense magnetic pattern 570A+, the first fragment S1 (A+), the second fragment S2 (A+), the 3rd fragment S3 (A+) and the 4th fragment S4 (A+) connect between terminal 572Vcce with terminal 572GND.And, terminal 572A+ is connected electrically between the 4th fragment S4 (A+) and the 5th fragment S5 (A+), terminal 572Vcce is connected with the second fragment S2 (A+) side, and terminal 572GND is connected with the 3rd fragment S3 (A+) side.Formation+A like this uses half bridge circuit mutually.
As shown in Fig. 5 (b), the 4th fragment S4 (A+) there is the first turnover pattern R4-1 and relative to the first turnover pattern R4-1 at adjacent the second turnover pattern R4-2 of the opposite side R2 of circumferential R.Further, the 5th fragment S5 (A+) there is the first turnover pattern R5-1 and relative to the first turnover pattern R5-1 at adjacent the second turnover pattern R5-2 of the side R1 of circumferential R.Corresponding to described structure, the second fragment S2 (A+) has and is separated the first turnover pattern R2-1 in 1/2 cycle relative to the first turnover pattern R5-1 at the side R1 of circumferential R and is separated the second turnover pattern R2-2 in 1/2 cycle relative to the second turnover pattern R5-2 at the side R1 of circumferential R.Further, the 3rd fragment S3 (A+) has and is separated the first turnover pattern R3-1 in 1/2 cycle relative to the first turnover pattern R4-1 at the opposite side R2 of circumferential R and is separated the second turnover pattern R3-2 in 1/2 cycle relative to the second turnover pattern R4-2 at the opposite side R2 of circumferential R.
As shown in Fig. 5 (a), other sense magnetic patterns (-A uses sense magnetic pattern 570B+ and-B mutually with sense magnetic pattern 570B-mutually with sense magnetic pattern 570A-,+B mutually) are also identical by the basic structure feeling magnetic pattern 570A+ mutually with+A.
More particularly ,-B comprises the first fragment S1 (B-) with sense magnetic pattern 570B-, is separated the second fragment S2 (B-) in 1/2 cycle and is separated the 3rd fragment S3 (B-) in 1/2 cycle relative to the first fragment S1 (B-) at the opposite side R2 of circumferential R relative to the first fragment S1 (B-) at the side R1 of circumferential R mutually.In the present embodiment, the first fragment S1 (B-) comprises the 4th fragment S4 (B-) and is separated the 5th fragment S5 (B-) in 1/4 cycle relative to the 4th fragment S4 (B-) at the side R1 of circumferential R.Therefore, second fragment S2 (B-) was separated for 1/2 cycle relative to the 5th fragment S5 (B-) at the side R1 of circumferential R, and the 3rd fragment S3 (B-) was separated for 1/2 cycle relative to the 4th fragment S4 (B-) at the opposite side R2 of circumferential R.At-the B so formed mutually with in sense magnetic pattern 570B-, the first fragment S1 (B-), the second fragment S2 (B-), the 3rd fragment S3 (B-) and the 4th fragment S4 (B-) connect between terminal 572Vcce with terminal 572GND.And, terminal 572B-is connected electrically between the 4th fragment S4 (B-) and the 5th fragment S5 (B-), terminal 572Vcce is connected with the second fragment S2 (B-) side, and terminal 572GND is connected with the 3rd fragment S3 (B-) side.Formation-B like this uses half bridge circuit mutually.
At this ,+A replaces configuration by each fragment of sense magnetic pattern 570B-in circumference with sense magnetic pattern 570A+ with-B mutually mutually, and such as the 4th fragment S4 (A+) was separated for 1/8 cycle relative to the 4th fragment S4 (B-) at the side R1 of circumferential R.
In addition, relative to be configured with+A mutually with sense magnetic pattern 570A+ and-B mutually with on position adjacent on the direction that rotation center axis L extends, the region of sense magnetic pattern 570B-,-A comprises the first fragment S1 (A-) with feeling magnetic pattern 570A-, is separated the second fragment S2 (A-) in 1/2 cycle and is separated the 3rd fragment S3 (A-) in 1/2 cycle relative to the first fragment S1 (A-) at the opposite side R2 of circumferential R relative to the first fragment S1 (A-) at the side R1 of circumferential R mutually.First fragment S1 (A-) comprises the 4th fragment S4 (A-) and the 5th fragment S5 (A-) being separated for 1/4 cycle relative to the 4th fragment S4 (A-) at the side R1 of circumferential R.Therefore, second fragment S2 (A-) was separated for 1/2 cycle relative to the 5th fragment S5 (A-) at the side R1 of circumferential R, and the 3rd fragment S3 (A-) was separated for 1/2 cycle relative to the 4th fragment S4 (A-) at the opposite side R2 of circumferential R.At-the A so formed mutually with in sense magnetic pattern 570A-, the first fragment S1 (A-), the second fragment S2 (A-), the 3rd fragment S3 (A-) and the 4th fragment S4 (A-) connect between terminal 572Vccf with terminal 572GND.And, terminal 572A-is connected electrically between the 4th fragment S4 (A-) and the 5th fragment S5 (A-), terminal 572Vccf is connected with the second fragment S2 (A-) side, and terminal 572GND is connected with the 3rd fragment S3 (A-) side.Formation-A like this uses half bridge circuit mutually.At-the A so formed mutually with in sense magnetic pattern 570A-, 4th fragment S4 (A-) and+A are positioned at same position with the 5th fragment S5 (A+) of sense magnetic pattern 570A+ at circumferential R mutually, but from when being connected with the unilateral observation of terminal 572A+, 572A-, the 4th fragment S4 (A-) and+A are positioned at the opposition side of circumferential R mutually with the 5th fragment S5 (A+) of sense magnetic pattern 570A+.Therefore, the waveform exported from terminal 572A+, 572A-is anti-phase.
In addition, relative to be configured with+A mutually with sense magnetic pattern 570A+ and-B mutually with the region of sense magnetic pattern 570B-on the position that the direction that rotation center axis L extends is adjacent ,+B comprises the first fragment S1 (B+) with feeling magnetic pattern 570B+, is separated the second fragment S2 (B+) in 1/2 cycle and is separated the 3rd fragment S3 (B+) in 1/2 cycle relative to the first fragment S1 (B+) at the opposite side R2 of circumferential R relative to the first fragment S1 (B+) at the side R1 of circumferential R mutually.First fragment S1 (B+) comprises the 4th fragment S4 (B+) and is separated the 5th fragment S5 (B+) in 1/4 cycle relative to the 4th fragment S4 (B+) at the side R1 of circumferential R.Therefore, second fragment S2 (B+) was separated for 1/2 cycle relative to the 5th fragment S5 (B+) at the side R1 of circumferential R, and the 3rd fragment S3 (B+) was separated for 1/2 cycle relative to the 4th fragment S4 (B+) at the opposite side R2 of circumferential R.At this ,+B alternately configures in circumference by each fragment feeling magnetic pattern 570A-with-A mutually with sense magnetic pattern 570B+ mutually, and such as the 4th fragment S4 (B+) was separated for 1/8 cycle relative to the 4th fragment S4 (A-) at the opposite side R2 of circumferential R.At+the B so formed mutually with in sense magnetic pattern 570B+, the first fragment S1 (B+), the second fragment S2 (B+), the 3rd fragment S3 (B+) and the 4th fragment S4 (B+) connect between terminal 572Vccf with terminal 572GND.And, terminal 572B+ is connected electrically between the 4th fragment S4 (B+) and the 5th fragment S5 (B+), terminal 572Vccf is connected with the second fragment S2 (B+) side, and terminal 572GND is connected with the 3rd fragment S3 (B+) side.Formation+B like this uses half bridge circuit mutually.At+the B so formed mutually with in sense magnetic pattern 570B+, 4th fragment S4 (B+) and-B are positioned at same position with the 5th fragment S5 (B-) of sense magnetic pattern 570B+ at circumferential R mutually, but from when being connected with the unilateral observation of terminal 572B+, 572B-, the 4th fragment S4 (B+) and-B are positioned at the opposition side of circumferential R mutually with the 5th fragment S5 (B-) of sense magnetic pattern 570B+.Therefore, the waveform exported from terminal 572B+, 572B-is anti-phase.
In the sensor part 8 so formed, if rotary body 6 (permanent magnet 65) rotates, then from the signal 81a that the difference of the signal of terminal 572A+, 572A-output is the A phase that Fig. 6 (a), solid line represents, be the signal 81b of the B phase Fig. 6 (a) shown in dotted line from the difference of the signal of terminal 572B+, 572B-output.Described signal is transformed to the rect.p. 82b of the B phase shown in the rect.p. 82a and Fig. 6 (c) of the A phase shown in Fig. 6 (b) by the comparer etc. that the semiconductor device that is assemblied in sensor base plate 54 or the semiconductor device that is assemblied in circuit board 15 are provided with, and rect.p. 82a, 82b export via cable 17.
So, when generating rect.p. 82a, 82b, as reference Fig. 5 (a), Fig. 5 (b) description, in magnetoresistive element 57 ,+A has with sense magnetic pattern 570B-the first fragment S1 (the 4th fragment S4 and the 5th fragment S5), the second fragment S2 and the 3rd fragment S3 that were separated for 1/2 cycle at circumferential R with sense magnetic pattern 570B+ and-B with sense magnetic pattern 570A-,+B mutually mutually mutually respectively with sense magnetic pattern 570A+ ,-A mutually.Therefore, it is possible to suppress to make detection signal produce distortion etc. because of the coercive force of the sense magnetic pattern of magnetoresistive element 57.Such as, at+A mutually with in sense magnetic pattern 570A+, due to the 4th fragment S4 (A+) and the 5th fragment S5 (A+) that form the first fragment S1 (A+) extremely opposed with N time, second fragment S2 (A+) and the 3rd fragment S3 (A+) is extremely opposed with S, even if therefore the coercive force of the sense magnetic pattern of magnetoresistive element 57 has the characteristics such as polarity is asymmetric, also can suppress to make detection signal produce distortion etc.And, because the both sides of the first fragment S1 (the 4th fragment S4 and the 5th fragment S5) are configured with the second fragment S2 and the 3rd fragment S3, the size of the circumferential R in the region being configured with A phase sense magnetic pattern 570A and B phase sense magnetic pattern 570B therefore can be shortened in magnetoresistive element 57.
(magnet shielding structure)
In Fig. 2 and Fig. 3, in the present embodiment, owing to employing permanent magnet 65 and magnetic sensor element 56 in sensor part 8, therefore relative to sensor part 8 at least overleaf side L2 be provided with magnetic shield.In the present embodiment, formed by magnetic materials such as steel such as SPPC by the base plate 521 of sensor housing 52, be formed in the magnetic shield in rear side L2 covering sensor portion 8 by base plate 521.At this, in sensor housing 52, because base plate 521 and cylindrical body part 522 are one, therefore whole sensor housing 52 is made up of magnetic material.Therefore, sensor part 8 surrounds side by the cylindrical body part 522 i.e. magnetic shield of sensor housing 52.In addition, in the present embodiment, sensor enclosure 51 is formed from a resin.Therefore, sensor part 8 is not covered by magnetic shield at operating surface side L1.
(structure of snap fastener 7a and spring pressure adjusting mechanism 7b)
Fig. 7 (a), Fig. 7 (b) are the key diagrams of the snap fastener 7a of sensor unit 10 for applying manual pulse generating unit 1 of the present invention etc., and Fig. 7 (a), Fig. 7 (b) observe the stereographic map of engaging gear 63 etc. from rear side L2 and observe the rear view of engaging gear 63 etc. from rear side L2.Fig. 8 is the stereographic map of the axle retainer 53 for the snap fastener 7a shown in Fig. 7 (a), Fig. 7 (b).
As shown in Figure 3 and 4, magnet retainer 62 has cylindrical portion 621, the first plectane portion 622 expanding in the rear side L2 end of cylindrical portion 621 and relative to the second plectane portion 623 that side L2 is expanding overleaf of the first plectane portion 622.In the first plectane portion 622, the mode of encountering turning axle 61 with end in radially through hole 625 is fixed with holding screw 627, thus magnet retainer 62 is connected with turning axle 61.In the present embodiment, in the outer peripheral face of turning axle 61, the position that the end of holding screw 627 is encountered is tabular surface 619.Further, in magnet retainer 62, be formed with the screw hole 622a for fixing engaging gear 63 in the first plectane portion 622, be formed with the screw hole 623a for fixing permanent magnet 65 in the second plectane portion 623.
Relative to the engaging gear 63 that the first plectane portion 622 overlaps circular at operating surface side L1.In the present embodiment, engaging gear 63 has annular portion 632 and from the outer rim of annular portion 632 side plate 631 outstanding to operating surface side L1, side plate 631 outer peripheral face 630 equiangularly gap-forming have multiple tooth 633 and groove 634.Further, form porose 632a in annular portion 632, by screw 639 being fixed to through hole 632a the screw hole 622a in the first plectane portion 622 of magnet retainer 62, engaging gear 63 is fixed to the first plectane portion 622.
As shown in Fig. 4 and Fig. 7 (a), Fig. 7 (b), the axle retainer 53 be formed from a resin is installed at the rear side L2 in plectane portion 512 in sensor enclosure 51, between axle retainer 53 with engaging gear 63, is configured with the abutment 70 abutted with the outer peripheral face 630 engaging gear 63 and the spring members 75 pressed to the outer peripheral face 630 engaging gear 63 by abutment 70.In the present embodiment, the rotation L direction that abutment 70 has along engaging gear 63 extends and the abutting part 701 abutted with tooth 633.In the present embodiment, abutment 70 is the axles 71 of the pole shape extended along rotation center axis L direction, and in outer peripheral face, the part towards engaging gear 63 side forms abutting part 701.In the present embodiment, axle 71 is made of metal.At this, axle 71 (abutting part 701) has the length of more than the width in the rotation center axis L direction of tooth 633, abuts with the entirety in the rotation center axis L direction of tooth 633.
Spring members 75 is volute springs 76, becomes the end face that the end of the wire rod forming volute spring 76 is not outstanding to axle 71 in volute spring 76 with the part that axle 71 abuts.
In the present embodiment, when axle 71 and volute spring 76 are held in sensor enclosure 51, use the axle retainer 53 shown in Fig. 8.Axle retainer 53 has the web portion 531 that side L2 is overlapping with the plectane portion 512 of sensor enclosure 51 overleaf and the square tube portion 535 of giving prominence to from the mediad rear side L2 of the circumference of web portion 531, is formed with the hole 538 of radially through circle in square tube portion 535.Further, in square tube portion 535, be formed with the axle support holes 537 extended along rotation center axis L direction at radially inner side, hole 538 is connected with the middle body of axle support holes 537.Two tubular projection 516a, 516b giving prominence to the rear side L2 in the plectane portion 512 at sensor enclosure 51 chimeric respectively breach 536a, 536b is formed in web portion 531.Therefore, under the state in plectane portion 512 that the mode being embedded in breach 536a, 536b with tubular projection 516a, 516b makes the web portion 531 of axle retainer 53 be overlapped in sensor enclosure 51, as long as carry out screw thread to tubular projection 516a, 516b to fix or riveted joint etc., just axle retainer 53 can be fixed on sensor enclosure 51.
As shown in Figure 4, axle 71 is received in axle support holes 537, volute spring 76 is received in hole 538.Further, hole 538 is different from the internal diameter of the rear section 538b of the opposition side of side, axle 71 place at the internal diameter of the front part 538a of side, axle 71 place, and rear section 538b becomes the screw hole larger than the internal diameter of front part 538a.At this, volute spring 76 is positioned at front part 538a, and screw 539 is fixed on rear section 538b.Consequently, the outer peripheral face 630 of axle 71 to engaging gear 63 presses by volute spring 76.Formation snap fastener 7a like this.
Further, as long as carry out following operation, the spring pressure of volute spring 76 can just be adjusted.Such as, after by magnet retainer 62 engaging gear 63 being installed to turning axle 61, under the state being contained in axle support holes 537 by axle 71, axle retainer 53 is fixed to sensor enclosure 51.Afterwards, after in the hole 538 volute spring 76 being inserted into axle retainer 53, from radial outside, screw component and screw 539 are fixed to hole 538.At this, screw 539 is screw components, and described screw component can remain on supporting mass 200 side (axle retainer 53) movably to the bending direction of volute spring 76 (spring members 75).Therefore, as long as the fastening amount of adjustment screw 539, the spring pressure of volute spring 76 can just be adjusted.Formation spring pressure adjusting mechanism 7b like this.
(structure for the angular position adjusting mechanism 7c of permanent magnet 65)
Fig. 9 is the stereographic map of permanent magnet 65 grade of observing the sensor unit 10 for applying manual pulse generating unit 1 of the present invention from rear side L2.
As shown in Fig. 3, Fig. 4 and Fig. 9, fixed head 64 has annular portion 641, and is formed between the inner edge and outer rim of annular portion 641 to the outstanding circular protuberance 642 of operating surface side L1.Permanent magnet 65 is fixed to the outer circumferential side of circular protuberance 642 by the method such as bonding.Be formed with the stage portion 651 towards radially inner side and rear side L2 at the rear side L2 of permanent magnet 65, the outer circumferential side end of the annular portion 641 of fixed head 64 abuts with stage portion 651.At the ratio protuberance 642 of annular portion 641 by the position of radially inner side, be formed with elongated hole 643 everywhere in circumference.At this, elongated hole 643 circumferentially.
In the present embodiment, after permanent magnet 65 is fixed to fixed head 64, when fixed head 64 being fixed to the second plectane portion 623 of magnet retainer 62, screw 694 is fixed to the screw hole 623a in the second plectane portion 623 from rear side L2 through elongated hole 643.At this, be formed with circular protuberance 624 at the rear side L2 in the second plectane portion 623 of magnet retainer 62, protuberance 624 be embedded in the hole 641a of the annular portion 641 of fixed head 64.Thereby, it is possible to carry out radial location to fixed head 64 and permanent magnet 65.
So, when fixed head 64 being fixed to the second plectane portion 623 of magnet retainer 62, first loosely gib screw 694, using the axle portion of screw 694 and elongated hole 643 as guiding, the angle position of adjustment fixed head 64, trip bolt 694 afterwards, is fixed on the second plectane portion 623 of magnet retainer 62 by fixed head 64.Consequently, have adjusted the angle position of permanent magnet 65.Formation like this is for the angular position adjusting mechanism 7c of permanent magnet 65.
According to described angular position adjusting mechanism 7c, the angle position of the permanent magnet 65 of rotary body 6 side can be adjusted.Therefore, in Fig. 6 (a), Fig. 6 (b), Fig. 6 (c), the signal 81a of the A phase that sensor part 8 can be made the to detect time point 86 consistent with the level of the signal of the signal 81b of B phase coexists, and to invade the time point of the groove 634 between two teeth 633 circumferential adjacent in multiple tooth 633 to greatest extent consistent for the snap fastener 7a axis 71 that illustrates with reference to Fig. 7 (a), Fig. 7 (b) etc.
(main efficacy results of present embodiment)
As above description, in the manual pulse generating unit 1 of present embodiment, if manually operation makes rotary body 6 rotate, then detect described rotation by sensor part 8, according to testing result pulsing.At this, sensor part 8 has and links with rotary body 6 and the permanent magnet 65 rotated, and detects the rotation of described permanent magnet 65 by the magnetic sensor element 56 being held in supporting mass 200 side.Therefore, different from optical sensor, even if when sensor part 8 is attached with wet goods foreign matter, the rotation (rotation of rotary body 6) of permanent magnet 65 also suitably can be detected.
Further, used by magnetoresistive element 57 as magnetic sensor element 56, when using magnetoresistive element 57, the movement of the adjoint S pole of permanent magnet 65 and an amount of separation (amount of separation of N pole and N pole) of S pole obtains the output of two-phase.Therefore, with use Hall element compared with, as long as due to 1/2 magnetization number, therefore can reduce permanent magnet 65, therefore, it is possible to realize the miniaturization of sensor unit 10 and manual pulse generating unit 1.
Further, owing to being provided with snap fastener 7a between rotary body 6 and supporting mass 200, therefore, it is possible to make operation sense excellent, and rotary body 6 can be made to stop in the angle position of specifying.Further, in snap fastener 7a, the rotation L direction that the abutment 70 engaged with the tooth 633 of engaging gear 63 has along engaging gear 63 extends and the abutting part 701 abutted with tooth 633.Therefore, abutment 70 is larger with the contact area of tooth 633.Therefore, it is possible to reliably obtain engaging sense, and tooth 633 can be suppressed to wear and tear.Further, abutment 70 is the axles 71 of the pole shape extended along rotation center axis L direction, in outer peripheral face, form abutting part 701 towards the part of engaging gear 63 side.Therefore, no matter when axle 71 is towards which direction, outer peripheral face (abutting part 701) all abuts with tooth 633.Further, the spring members 75 for snap fastener 7a is volute springs 76, and the part abutted with axle 71 (abutment 70) in volute spring 76 becomes not outstanding to axle 71 end face in the end of the wire rod forming volute spring 76.Therefore, due to volute spring 76 and axle 71 can be suppressed to block, therefore, it is possible to adopt make volute spring 76 directly be coupling tactile structure.
And, when the structure making axle 71 abut with engaging gear 63, because abutment 70 (axle 71) is larger with the contact area of tooth 633, therefore be necessary suitably to set abutting pressure, in the present embodiment, owing to being provided with spring pressure adjusting mechanism 7b, therefore, it is possible to suitably setting abuts pressure.Further, axle 71 has the length of more than the width of tooth 633, abuts with the whole width of tooth 633.Therefore, compared with the situation that axle 71 abuts with a part for the Width of tooth 633, axle 71 is larger with the contact area of tooth 633.Therefore, it is possible to suppress the wearing and tearing etc. of tooth 633.Further, in spring pressure adjusting mechanism 7b, use can remain on the screw 539 (screw component) of supporting mass 200 side movably to the bending direction of spring members 75 (volute spring 76).Therefore, it is possible to easily adjust the load of snap fastener 7a, and easily assemble snap fastener 7a.
Further, in the present embodiment, the time point that the time point coaxial 71 that the signal 81a of A phase of sensor part 8 detection is consistent with the level of the signal 81b of B phase invades the groove 634 between two teeth 633 circumferential adjacent in multiple tooth 633 is to greatest extent consistent.Therefore, under the state making rotary body 6 stop by snap fastener 7a, the signal 81a of A phase can be made consistent with the level of the signal 81b of B phase.And, in the present embodiment, in the angle position of the permanent magnet 65 in rotary body 6 side, the angle position of engaging gear 63 of rotary body 6 side and the angle position of axle 71, be provided with the angular position adjusting mechanism 7c of the angle position of the permanent magnet 65 for adjusting rotary body 6 side.Therefore, the time point that the signal 81a of the A phase that sensor part 8 can be made the to detect time point coaxial 71 consistent with the level of the signal 81b of B phase invades the groove 634 between two teeth 633 that in multiple tooth 633, circumference is adjacent is to greatest extent consistent, and the time point obtaining engaging sense can be made to overlap with the time point of output pulse 85.Further, according to angular position adjusting mechanism 7c, the angle position of rotary body 6 can be made to overlap with the time point exporting pulse 85.Particularly when sensor part 8 employs permanent magnet 65 and magnetic sensor element 56, owing to can't see magnetization position at magnetic scale (permanent magnet 65), therefore during assembling, above-mentioned time point is overlapped more difficult, but owing to can adjust the angle position of permanent magnet 65 according to angular position adjusting mechanism 7c, therefore easy angle position permanent magnet 65 being arranged on the best.
Further, in the present embodiment, relative to the magnetic shield that sensor part 8 base plate 521 that side L2 is provided with the sensor housing 52 formed by magnetic material is overleaf formed.Therefore, though when by the rear side L2 of manual pulse generating unit 1 by magnet be installed on machining center etc. operate, also can relax the impact of magnet on sensor part 8 by magnetic shield.Further, the cylindrical body part 522 of sensor housing 52 is as the side in magnetic shield covering sensor portion 8.Therefore, it is possible to effectively carry out magnetic shielding to sensor part 8.On the other hand, in supporting mass 200, the sensor enclosure 51 due to the opening of closed cylindrical body part 522 is (nonmagnetic substances) of being formed from a resin, therefore, it is possible to make sensor enclosure 51 be formed by the light and material of cheapness.Further, because sensor enclosure 51 is formed from a resin (nonmagnetic substance), therefore easily make sensor enclosure 51 become to be applicable to the structure of the axle retainer 53 etc. keeping magnetic sensor element 56 or be kept for snap fastener 7a.
(other embodiments)
In the above-described embodiment, adjusting time point that snap fastener 7a produces load with when exporting the time point of pulse 85, in angular position adjusting mechanism 7c, have adjusted the angle position of the permanent magnet 65 of rotary body 6 side, but the angular position adjusting mechanism of the angle position of the engaging gear 63 for adjusting rotary body 6 side, the angle position of axle 71 or the angle position of magnetic sensor element 56 also can be set.
In the above-described embodiment, the spring members 75 being used for snap fastener 7a is set to volute spring 76, but also can uses leaf spring or disk spring etc.And, in the above-described embodiment, using the axle 71 of pole shape as have along engaging gear 63 rotation L direction extend and the abutment 70 of the abutting part 710 abutted with tooth 633 use, but if snap fastener 7a can be formed engaging between gear 63, then also can use and only have the cross section of abutting part 701 to be the abutment 70 of the bar-shaped of arc-shaped or tabular.
In the above-described embodiment, when the rear side L2 of sensor part 8 arranges magnetic shield, form sensor housing 52 by magnetic material, but also can form sensor housing 52 by nonmagnetic substance, and the magnetic shield formed by the magnetic material of sheet is set at the rear side L2 of sensor part 8.Further, also second housing parts 13 can be formed by magnetic material, using the magnetic shield of second housing parts 13 as the rear side L2 of sensor part 8.
Further, in the above-described embodiment, manual pulse generating unit 1 is connected to equipment 18 by cable 17, but manual pulse generating unit 1 also can be the structure being directly installed to equipment 18.
Claims (21)
1. a manual pulse generating unit, it comprises:
Supporting mass;
Rotary body, described rotary body can be supported on described supporting mass rotatably, and manually operation rotates; And
Sensor part, described sensor part detects the rotation of described rotary body,
Described manual pulse generating unit according to the testing result pulsing of described sensor part,
The feature of described manual pulse generating unit is,
Described sensor part comprises:
Permanent magnet, described permanent magnet and described rotary body link and rotate; And
Magnetoresistive element, described magnetoresistive element is held in described supporting side.
2. manual pulse generating unit according to claim 1, is characterized in that,
Relative to described sensor part, the side of carrying out manually operated side contrary to described rotary body is being provided with magnetic shield.
3. manual pulse generating unit according to claim 2, is characterized in that,
Described supporting mass has the sensor housing holding described sensor part,
Described sensor housing has:
Base plate, described base plate is positioned at carries out contrary side, manually operated side with to described rotary body; And
Cylindrical body part, described cylindrical body part from described base plate to carrying out the extension of manually operated side to described rotary body and surrounding around described sensor part,
Described base plate forms described magnetic shield by magnetic sheet.
4. manual pulse generating unit according to claim 3, is characterized in that,
Described cylindrical body part forms magnetic shield by magnetic sheet.
5. manual pulse generating unit according to claim 3, is characterized in that,
Described supporting mass has the sensor enclosure of the opening sealing described cylindrical body part,
Described sensor enclosure is formed by nonmagnetic substance.
6. manual pulse generating unit according to claim 4, is characterized in that,
Described base plate and described cylindrical body part form, and whole described sensor housing is made up of magnetic material and becomes magnetic shield.
7. manual pulse generating unit according to claim 5, is characterized in that,
Described sensor enclosure has:
Cylindrical portion; And
Plectane portion, expanding with the end side of described rotary body being carried out to contrary side, manually operated side in described cylindrical portion of described plectane portion,
Described plectane portion is combined with described cylindrical body part in the mode sealing the opening of described cylindrical body part,
Maintain circular bearing in the inner side of described cylindrical portion, by described bearing, described rotary body is supported as rotating.
8. manual pulse generating unit according to any one of claim 1 to 7, is characterized in that,
Described magnetoresistive element has:
A phase sense magnetic pattern; And
B phase sense magnetic pattern, described B phase sense magnetic pattern generates phase place deviate from for 1/4 cycle signal relative to the signal that described A phase sense magnetic pattern generates,
Described A phase sense magnetic pattern and described B phase sense magnetic pattern comprise respectively:
First fragment;
Second fragment, described second fragment was separated for 1/2 cycle relative to described first fragment in the side in the relative movement direction with described permanent magnet; And
3rd fragment, described 3rd fragment was separated for 1/2 cycle relative to described first fragment at the opposite side in described relative movement direction,
9. manual pulse generating unit according to claim 8, is characterized in that,
Described first fragment comprises:
4th fragment; And
5th fragment, described 5th fragment was separated for 1/4 cycle relative to described 4th fragment in the side in described relative movement direction,
Described second fragment was separated for 1/2 cycle relative to described 5th fragment in the side in described relative movement direction,
Described 3rd fragment was separated for 1/2 cycle relative to described 4th fragment at the opposite side in described relative movement direction.
10. manual pulse generating unit according to claim 9, is characterized in that,
Described A phase sense magnetic pattern has:
+ A is mutually with sense magnetic pattern; And
-A is mutually with sense magnetic pattern, and described-A generates the signal of anti-phase mutually mutually with sense magnetic pattern relative to described+A with sense magnetic pattern,
Described B phase sense magnetic pattern has:
+ B is mutually with sense magnetic pattern; And
-B is mutually with sense magnetic pattern, and described-B generates the signal of anti-phase mutually mutually with sense magnetic pattern relative to described+B with sense magnetic pattern,
Described+A comprises described first fragment, described second fragment, described 3rd fragment, described 4th fragment and described 5th fragment with sense magnetic pattern with sense magnetic pattern and described-B with sense magnetic pattern, described+B mutually mutually mutually with sense magnetic pattern, described-A mutually.
11. manual pulse generating units according to claim 9, is characterized in that,
Equiangularly circumferentially alternately S pole and N pole is formed in interval at the outer peripheral face of described permanent magnet,
Described magnetoresistive element is opposed with the outer peripheral face of described permanent magnet,
Described 4th fragment and described 5th fragment and described S pole and described N extremely in one extremely opposed,
Described second fragment and described 3rd fragment and described S pole and described N extremely in another is extremely opposed.
12. manual pulse generating units according to claim 1, is characterized in that,
Snap fastener is provided with between described rotary body and described supporting mass,
Described snap fastener has:
Engaging gear, described engaging tooth wheel is positioned at described rotation side, and is circumferentially arranged with multiple tooth at outer peripheral face;
Abutment, described abutment abuts with the outer peripheral face of described engaging gear; And
Spring members, described abutment is pressed into the outer peripheral face of described engaging gear by described spring members.
13. manual pulse generating units according to claim 12, is characterized in that,
The rotation direction that described abutment has along described engaging gear extends and the abutting part abutted with described tooth.
14. manual pulse generating units according to claim 13, is characterized in that,
Described abutment is the axle of the pole shape extended along the rotation direction of described engaging gear.
15. manual pulse generating units according to claim 12, is characterized in that,
Described abutting part has the length of more than the width of the described axis direction of described tooth, and abuts with the entirety of the described axis direction of described tooth.
16. manual pulse generating units according to claim 13, is characterized in that,
The spring pressure adjusting mechanism of the spring pressure for adjusting described spring members is provided with at described supporting mass.
17. manual pulse generating units according to claim 16, is characterized in that,
Described spring pressure adjusting mechanism has the screw component that can be bearing in described supporting side to the bending direction of described spring members movably.
18. manual pulse generating units according to claim 13, is characterized in that,
Described spring members is volute spring,
Become the end face that the end that forms described helical spring wire rod is not outstanding to described abutment with the part that described abutment abuts in described coil spring.
19. manual pulse generating units according to claim 12, is characterized in that,
The time point that the signal of the A phase detected by the described sensor part time point consistent with the level of the signal of B phase invades the groove in described multiple tooth between two teeth that circumference is adjacent to greatest extent with described abutment is consistent.
20. manual pulse generating units according to claim 12, is characterized in that,
Described manual pulse generating unit is provided with angular position adjusting mechanism, and described angular position adjusting mechanism is for adjusting at least one in the angle position of the described permanent magnet on described rotation side, the angle position of described engaging gear on described rotation side and the angle position of described abutment.
21. manual pulse generating units according to claim 12, is characterized in that,
Described manual pulse generating unit is provided with angular position adjusting mechanism, and described angular position adjusting mechanism is at least one in the angle position of the described magnetoresistive element of the angle position and described supporting side that adjust the described permanent magnet on described rotation side.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2014-100949 | 2014-05-14 | ||
| JP2014100949A JP6396677B2 (en) | 2014-05-14 | 2014-05-14 | Manual pulse generator |
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| CN105091736A true CN105091736A (en) | 2015-11-25 |
| CN105091736B CN105091736B (en) | 2018-04-20 |
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| CN201520307321.6U Withdrawn - After Issue CN204649155U (en) | 2014-05-14 | 2015-05-13 | Manual pulse generating unit |
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| JP (1) | JP6396677B2 (en) |
| KR (1) | KR20150130911A (en) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499668A (en) * | 2016-01-13 | 2016-04-20 | 高碧 | Numerical control automatic milling machine |
| CN110622098A (en) * | 2017-02-20 | 2019-12-27 | 汉斯海多尔夫有限公司 | Operating element for laboratory equipment |
| CN111769000A (en) * | 2020-06-19 | 2020-10-13 | 浙江万超电器有限公司 | AMT switch for 24V heavy truck |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6396677B2 (en) * | 2014-05-14 | 2018-09-26 | 日本電産サンキョー株式会社 | Manual pulse generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105499668A (en) * | 2016-01-13 | 2016-04-20 | 高碧 | Numerical control automatic milling machine |
| CN110622098A (en) * | 2017-02-20 | 2019-12-27 | 汉斯海多尔夫有限公司 | Operating element for laboratory equipment |
| US11269369B2 (en) | 2017-02-20 | 2022-03-08 | Hans Heidolph GmbH | Operating element for a laboratory device |
| CN111769000A (en) * | 2020-06-19 | 2020-10-13 | 浙江万超电器有限公司 | AMT switch for 24V heavy truck |
| CN111769000B (en) * | 2020-06-19 | 2022-12-02 | 浙江万超电器有限公司 | AMT switch for 24V heavy truck |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201602754A (en) | 2016-01-16 |
| JP6396677B2 (en) | 2018-09-26 |
| CN204649155U (en) | 2015-09-16 |
| CN105091736B (en) | 2018-04-20 |
| JP2015219041A (en) | 2015-12-07 |
| KR20150130911A (en) | 2015-11-24 |
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