TW201602754A - Manual pulse generator - Google Patents

Abstract

The utility model provides a rotatory and direction of rotation and output pulse suitably that manual pulse generator can detect the rotator with high sensitivity. In manual pulse generator's sensor unit (10), if rotatory through manually operation messenger's rotator, then detect through sensor portion (8) it is rotatory, according to the testing result pulsing. Sensor portion (8) has the rotatory permanent magnet with rotator linkage, and through keeping in magnetoresistive element (57) of support (200) detection the rotation of permanent magnet. Incline at the verso for sensor portion (8), carry out the magnetic screen through sensor housing (52) that form by magnetic material. Relative with this, sensor dustcoat (51) that are located operating surface side (L2) for sensor portion (8) are made by the resin.

Description

Manual pulse generating device

The present invention relates to a manual pulse generating device for manually generating pulses.

A manual pulse generating device for setting a machining condition or an operation of an electronic device to a numerical control machine tool such as a processing machine generates a pulse in accordance with a rotation angle thereof when a rotating body such as a turntable is manually rotated. In such a manual pulse generating device, an optical sensor is used for detecting the rotation of the rotating body (see Patent Document 1).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2-110817

However, when an optical sensor is used as in the configuration described in Patent Document 1, there is a problem that erroneous detection occurs if foreign matter such as oil adheres to the sensor. In particular, since the manual pulse generating device is often used in an environment in which a processing machine or the like is installed, there is a high possibility that foreign matter such as oil is adhered.

In view of the above problems, an object of the present invention is to provide a manual pulse generating device which is less likely to cause erroneous detection even when oil or the like is attached.

In order to solve the above problems, the present invention is a manual pulse generating device comprising: a support body; a rotating body rotatably supported by the support body and rotated by hand; And a sensor unit that detects rotation of the rotating body; and generates a pulse according to a detection result of the sensor unit, wherein the manual pulse generating device is characterized in that the sensor portion includes: a permanent magnet, and the rotation The body rotates in conjunction with each other; and the magnetoresistive element is held on the support side.

In the present invention, when the rotating body is manually rotated, the rotation is detected by the sensor portion, and a pulse is generated based on the detection result. Here, the sensor portion has a permanent magnet that rotates in conjunction with the rotating body, and the rotation of the permanent magnet is detected by a magnetoresistive element held on the side of the support. Therefore, unlike the optical sensor, even when foreign matter such as oil adheres to the sensor portion, the rotation of the permanent magnet (rotation of the rotating body) can be appropriately detected.

In the present invention, it is preferable that a magnetic shield is provided on a side opposite to the side on which the sensor body is manually operated with respect to the sensor portion. In many cases, the manual pulse generating device is operated by being attached to a processing machine or the like by a magnet on the opposite side of the manual side. Even in this case, the influence of the sensor portion can be alleviated by the magnetic shield.

In the above aspect of the invention, preferably, the support body has a sensor case that houses the sensor portion, and the sensor case has a bottom plate portion and a cylindrical portion opposite to a side on which the rotary body is manually operated. In the main body portion, the cylindrical main body portion extends from the bottom plate portion to the side of the rotating body and surrounds the sensor portion, and the bottom plate portion is formed of a magnetic plate to constitute the magnetic shield. According to the above configuration, the sensor portion can be effectively magnetically shielded.

In the invention, it is preferable that the cylindrical body portion is formed of a magnetic plate to constitute a magnetic shield. According to the above configuration, the sensor can be magnetically shielded efficiently.

In the invention, it is preferable that the support body has a sensor cover that closes an opening of the cylindrical body portion, and the sensor cover is formed of a non-magnetic material. According to the above configuration, the sensor cover can be formed of a lightweight and inexpensive material.

In the present invention, it is preferable that the bottom plate portion and the cylindrical body portion are integrally formed The entire sensor housing is made of a magnetic material to form a magnetic shield. According to the above configuration, the sensor portion can be effectively magnetically shielded.

In the present invention, it is preferable that the sensor cover has a cylindrical portion and a circular plate portion, and the circular plate portion is expanded at an end portion of the cylindrical portion opposite to a side on which the rotary body is manually operated. The disc portion is coupled to the tubular main body portion so as to close the opening of the cylindrical main body portion, and an annular bearing is held inside the cylindrical portion, and the rotation is rotatably supported via the bearing. body. According to the above configuration, the rotating body can be rotatably supported by the sensor cover.

In the present invention, it is preferable that the magnetoresistive element has a magnetic induction pattern for phase A and a magnetic induction pattern for phase B, and the magnetic induction pattern for phase B of phase B generates a phase shift of 1/4 with respect to a signal generated by the magnetic induction pattern for phase A. The signal of the cycle, the A-phase magnetic induction pattern and the B-phase magnetic induction pattern respectively include a first segment, a second segment, and a third segment, wherein the second segment is opposite to the first segment One side of the magnet in the relative movement direction is separated by 1/2 cycle, and the third segment is separated from the other side by one-half cycle in the relative movement direction. According to the above configuration, the magnetoresistive element can detect the rotation of the rotating body, and the detection accuracy can be suppressed due to the influence of the coercive force of the magnetic induction pattern. Further, since the magnetic induction pattern for the A phase and the magnetic induction pattern for the B phase have the second segment and the third segment on both sides of the first segment, the circumferential dimension of the magnetoresistive element can be shortened.

In the present invention, the first segment may include a fourth segment and a fifth segment, and the fifth segment may be spaced apart from the fourth segment by a quarter cycle in the relative movement direction. The second segment is separated from the fifth segment by one-half cycle on one side of the relative movement direction, and the third segment is separated from the fourth segment on the other side of the relative movement direction. Open 1/2 cycle.

In the present invention, it is preferable that the magnetic induction pattern for the A phase has a magnetic induction pattern for the +A phase and a magnetic induction pattern for the -A phase, and the magnetic induction pattern for the -A phase is reversed with respect to the magnetic induction pattern for the +A phase. Signal, the above-mentioned phase B magnetic induction pattern has a magnetic phase of +B phase The sensing pattern and the -B phase magnetic induction pattern, the -B phase magnetic induction pattern generates a signal opposite to the +B phase magnetic induction pattern, the +A phase magnetic induction pattern, the -A phase magnetic induction pattern, and the The +B phase magnetic induction pattern and the -B phase magnetic induction pattern include the first segment, the second segment, the third segment, the fourth segment, and the fifth segment. According to the above configuration, it is possible to suppress deformation or the like of the detection signal due to the coercive force of the magnetic induction pattern of the magnetoresistive element.

In the present invention, it is preferable that an S pole and an N pole are alternately formed in the circumferential direction at equal angular intervals on the outer circumferential surface of the permanent magnet, and the magnetoresistive element faces the outer circumference of the permanent magnet, and the fourth region The segment and the fifth segment face one of the S pole and the N pole, and the second segment and the third segment face the other of the S pole and the N pole. According to the above configuration, even if the coercive force of the magnetic induction pattern of the magnetoresistive element is asymmetrical with respect to polarity, deformation of the detection signal or the like can be suppressed.

In the present invention, it is preferable that an engagement mechanism is provided between the rotating body and the support body, and the engagement mechanism includes an engagement gear that is arranged in a plurality of circumferential directions on the outer circumferential surface of the rotating body side. a contact member that abuts against an outer circumferential surface of the engagement gear; and a spring member that presses the contact member against an outer circumferential surface of the gear. According to the above configuration, the rotating body can be stopped at a specific angular position by the engaging mechanism having the engaging gear and the shaft.

In the invention, it is preferable that the abutting member has an abutting portion, and the abutting portion extends in a direction of a rotation axis of the engaging gear and abuts against the tooth. According to the above configuration, the contact area between the abutting member and the teeth of the engaging gear is large. Therefore, the feeling of engagement can be surely obtained, and abrasion of the teeth and the like can be suppressed.

In the invention, it is preferable that the abutting member is a rod-shaped shaft extending in a direction of a rotation axis of the engaging gear. According to the above configuration, the outer peripheral surface (contact portion) abuts against the teeth regardless of which direction the shaft faces.

In the invention, it is preferable that the abutting portion has the axial direction of the tooth The length above the width abuts against the entire axial direction of the teeth. According to the above configuration, the contact area with the teeth is larger than when the abutting member abuts against one of the axial directions of the teeth. Therefore, abrasion of the teeth and the like can be suppressed.

In the invention, it is preferable that the support body is provided with a spring pressure adjusting mechanism that adjusts a spring pressure of the spring member. According to the above configuration, the load of the engagement mechanism can be set to an appropriate condition. Further, in the case where the abutting member having the abutting portion extending in the rotational axis direction of the engaging gear abuts against the engaging gear, it is particularly necessary to appropriately set the abutting pressure, but it is only necessary to provide the spring pressure adjusting mechanism. , the abutment pressure can be set appropriately.

In the invention, it is preferable that the spring pressure adjusting mechanism has a screw member, and the screw member is movably held by the support body side in a bending direction of the spring member. According to the above configuration, the load of the engaging mechanism can be easily adjusted, and the engaging mechanism can be easily assembled.

In the present invention, it is preferable that the spring member is a coil spring, and a portion of the coil spring that abuts against the abutting member is an end surface that constitutes an end portion of the wire member of the coil spring that does not protrude toward the abutting member. According to the above configuration, since the coil spring can be prevented from being caught by the abutting member, the coil spring can be directly in contact with the abutting member.

In the present invention, it is preferable that the signal of the phase A detected by the sensor unit coincides with the level of the signal of the phase B, and the axis is intruded into the plurality of teeth to be adjacent to the circumference in the circumferential direction. The time between the grooves between the two teeth is the same. According to the above configuration, in the state where the rotating body is stopped by the engaging mechanism, the signal of the A phase can be aligned with the level of the signal of the B phase.

In the present invention, it is preferable that the angular position adjusting mechanism is provided, and the angular position adjusting mechanism adjusts an angular position of the permanent magnet on the rotating body side, an angular position of the abutting member on the rotating body side, and the abutting member. At least one of the angular positions. According to the above configuration, the time for obtaining the feeling of engagement can be made coincident with the time of the output pulse.

In the present invention, it is preferable that the angular position adjusting mechanism is provided to adjust at least one of an angular position of the permanent magnet on the rotating body side and an angular position of the magnetoresistive element on the support side. . According to the above configuration, the angular position of the rotating body can be matched with the time of the output pulse.

In the manual pulse generator of the present invention, when the rotary body is rotated by hand, the rotation is detected by the sensor unit, and a pulse is generated based on the detection result. Here, the sensor portion has a permanent magnet that rotates in conjunction with the rotating body, and the rotation of the permanent magnet is detected by the magnetoresistive element held on the side of the support. Therefore, unlike the optical sensor, even when foreign matter such as oil adheres to the sensor portion, the rotation of the permanent magnet (rotation of the rotating body) can be appropriately detected.

1‧‧‧Manual pulse generator

2‧‧‧Connected components

3‧‧‧shims

6‧‧‧Rotating body

7a‧‧‧Cordging mechanism

7b‧‧ ‧ spring pressure adjustment mechanism

7c‧‧‧Angle position adjustment mechanism

8‧‧‧Sensor Department

10‧‧‧Sensor unit

11‧‧‧Shell

12‧‧‧1st outer casing member

13‧‧‧2nd outer casing member

14‧‧‧ Turntable

15‧‧‧ circuit board

16a, 16b‧‧‧Switch knob

17‧‧‧ cable

18‧‧‧ Machine

21‧‧‧Flange

22‧‧‧Cylinder

23‧‧‧ hole

26‧‧‧Setting screws

51‧‧‧Sensor cover

52‧‧‧Sensor housing

53‧‧‧ shaft retainer

54‧‧‧Sensor substrate

55a, 55b‧‧‧ bearing

56‧‧‧Magnetic sensor components

57‧‧‧Magnetoresistive components

58‧‧‧Component holder

59‧‧‧ element substrate

61‧‧‧Rotary axis

62‧‧‧Magnet holder

63‧‧‧Snap gear

64‧‧‧ fixed board

65‧‧‧ permanent magnet

70‧‧‧Abutment components

71‧‧‧Axis

75‧‧‧Spring components

76‧‧‧Helical spring

81a, 81b‧‧‧ signals

82a, 82b‧‧‧ rectangular pulse

86‧‧‧Time when the signal level of the phase A signal 81a detected by the sensor unit 8 coincides with the signal level of the phase 81 signal 81b

100‧‧‧ device body

110‧‧‧Operation surface

121‧‧‧ tablet

123‧‧‧ Front Board

123a‧‧‧ openings

123b‧‧‧ recess

124‧‧‧Side plate department

129‧‧ ‧ imprint

131‧‧‧screw

143, 144‧‧ screws

152a, 152b‧‧‧ Rotary switch

153‧‧‧Connector

172‧‧‧Connector

173‧‧‧Connector

174‧‧‧ bushing

181‧‧‧Connector

200‧‧‧Support

511‧‧‧Cylinder

512‧‧‧round board

513, 514‧‧ ‧ convex

516a, 516b‧‧‧ cylindrical protrusion

521‧‧‧ bottom plate of the sensor housing

522‧‧‧The cylindrical body of the sensor housing

531‧‧‧Connected board

535‧‧‧ angular column

536a, 536b‧‧ ‧ gap

537‧‧‧Axis support hole

538‧‧‧ hole

538a‧‧‧ front part

538b‧‧‧ rear part

539‧‧‧Locating screws (screw components)

570A‧‧‧A phase magnetic induction pattern

570A-‧‧‧-A phase magnetic induction pattern

570A+‧‧‧+A phase magnetic induction pattern

570B‧‧‧B phase magnetic induction pattern

570B-‧‧‧-B phase magnetic induction pattern

570B+‧‧‧+B phase magnetic induction pattern

571a, 571b‧‧‧ magnetic induction pattern

572A-, 572A+, 572B-, 572B+‧‧‧ terminals

572GND, 572Vcce, 572Vccf‧‧‧ terminals

573e, 573f‧‧‧ power supply line

574‧‧‧Ground

575a, 575b, 576a, 576b‧‧‧ eliminate patterns

618‧‧‧flat surface

619‧‧‧flat surface

621‧‧‧Cylinder

622‧‧‧1st round plate

622a‧‧‧ screw hole

623‧‧‧2nd Disc Department

623a‧‧‧ screw hole

624‧‧‧ convex

625‧‧‧ hole

627‧‧‧Setting screws

630‧‧‧ outer perimeter

631‧‧‧ Side panel

632‧‧‧Round Department

632a‧‧ hole

633‧‧‧ teeth

634‧‧‧ slots

639‧‧‧screw

641‧‧‧The Ministry of the Ring

641a‧‧ hole

642‧‧‧ convex

643‧‧‧ long hole

650‧‧‧ outer perimeter

651‧‧‧

694‧‧‧screw

701‧‧‧Apartment

L‧‧‧Rotation center axis

L1‧‧‧Operation side

L2‧‧‧ back side

S1‧‧‧1st Section

S2‧‧‧2nd Section

S3‧‧‧3rd Section

Section 4 of S4‧‧

S5‧‧‧5th Section

S1(A-)‧‧‧1st Section

S2(A-)‧‧‧section 2

S3 (A-)‧‧‧3rd Section

S4 (A-)‧‧‧4th Section

S5 (A-)‧‧‧5th Section

S1(A+)‧‧‧1st Section

S2(A+)‧‧‧section 2

S3 (A+)‧‧‧3rd Section

S4 (A+)‧‧‧4th Section

S5(A+)‧‧‧5th Section

S1(B-)‧‧‧1st Section

S2(B-)‧‧‧section 2

S3(B-)‧‧‧3rd Section

S4(B-)‧‧‧4th Section

S5(B-)‧‧‧5th Section

S1(B+)‧‧‧1st Section

S2(B+)‧‧‧section 2

S3 (B+) ‧‧ Section 3

S4 (B+) ‧‧ Section 4

S5 (B+)‧‧‧5th Section

R‧‧‧Weighing

R1‧‧‧ week to R side

R2‧‧‧ week to the other side of R

R2-1‧‧‧1st fold pattern

R2-2‧‧‧2nd fold pattern

R3-1‧‧‧1st fold pattern

R3-2‧‧‧2nd fold pattern

R4-1‧‧‧1st fold pattern

R4-2‧‧‧2nd fold pattern

R5-1‧‧‧1st fold pattern

R5-2‧‧‧2nd fold pattern

Λ‧‧1 cycle

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view showing the appearance of a manual pulse generating device to which the present invention is applied.

Figure 2 is an exploded perspective view of a manual pulse generating device to which the present invention is applied.

Figure 3 is an exploded perspective view of a sensor unit for applying the manual pulse generating device of the present invention.

4 is a cross-sectional view of a sensor unit for applying the manual pulse generating device of the present invention.

5(a) and 5(b) are explanatory views of a magnetoresistive element for applying the manual pulse generating device of the present invention.

6(a) to 6(c) are explanatory views of detection signals and the like of a magnetoresistive element to which the manual pulse generating device of the present invention is applied.

7(a) and 7(b) are explanatory views of an engaging mechanism and the like of a sensor unit to which the manual pulse generating device of the present invention is applied.

Figure 8 is a perspective view of a shaft holder for the engaging mechanism shown in Figure 7.

Figure 9 is a view of the sensing of the manual pulse generating device for applying the present invention as viewed from the back side A perspective view of a permanent magnet or the like of the unit.

The manual pulse generating device to which the present invention is applied will be described with reference to the drawings.

(The overall composition of the manual pulse generating device)

Fig. 1 is an explanatory view showing the appearance of a manual pulse generating device 1 to which the present invention is applied. Fig. 2 is an exploded perspective view of the manual pulse generating device 1 to which the present invention is applied. In FIG. 2 and the like, in the direction in which the rotation center axis line L of the rotor 6 extends (the direction of the rotation center axis L), L1 is indicated on the operation surface side, and L2 is indicated on the back surface side.

In the manual pulse generator 1 shown in FIGS. 1 and 2, a turntable 14 that is manually rotated is disposed on the front surface of the apparatus main body 100, and a mark 129 indicating a reference position and a polarity is placed around the turntable 14. The turntable 14 constitutes a rotating body 6 together with a rotating shaft 61 and the like which will be described later, and the rotating body 6 is rotatably supported by a support body 200 such as the outer casing 11 and the sensor housing 52. The front surface of the device body 100 thus constructed is the operation surface 110.

The front surface (operation surface 110) of the apparatus main body 100 is provided with switching knobs 16a and 16b for switching the characteristics of the pulse of the output, and a flat plate 121 for indicating the scale of the switching knobs 16a and 16b. Further, a cable 17 is drawn from the lower end portion of the apparatus body 100. The cable 17 is connected to the device body 100 via a bushing 174. A connector 173 is attached to the front end of the cable 17, and the connector 173 is coupled to the connector 181 of the machine 18 from which the manual pulse generating device 1 is outputted. The manual pulse generating device 1 is supplied with power from the machine 18 in a state where the cable 17 is connected to the machine 18.

The manual pulse generating device 1 generates a pulse when the turntable 14 is manually rotated. The pulse is output to the device 18 such as a numerical control machine tool such as a processing machine or an electronic device via the cable 17, and is used for condition setting or operation confirmation of the device 18. In this form, machine 18 is a numerically controlled machine tool. The switching knobs 16a, 16b are used, for example, to select the X-axis, the Y-axis, the Z-axis of the numerical control machine tool or to select the sensitivity.

As shown in FIG. 2, the outer casing 11 has a front surface side (operation surface side) constituting the apparatus body 100. The first outer casing member 12 of L1) and the second outer casing member 13 constituting the back side L2 of the apparatus main body 100. The first outer casing member 12 has a rectangular front plate portion 123 on the operation surface side L1 and a side plate portion 124 that protrudes from the four edges of the front plate portion 123 toward the back surface side L2. In the front plate portion 123, an opening portion 123a is formed at a position overlapping the turntable 14, and a circular recess portion 123b is formed around the opening portion 123a. The second outer casing member 13 is coupled to the first outer casing member 12 by a screw 131 in a state of covering the opening of the back side L2 of the first outer casing member 12 . In the present embodiment, the first outer casing member 12 and the second outer casing member 13 are made of resin, but they may be made of metal.

The sensor unit 10 and the circuit board 15 are disposed between the first outer casing member 12 and the second outer casing member 13 , and the sensor unit 10 is screwed (not shown) or the like via the annular gasket 3 . The plate portion 123 is fixed to the front portion of the first case member 12. The circuit board 15 constitutes a circuit (not shown) for outputting a pulse generated based on the detection result of the sensor unit 10, and is fixed to the front plate portion 123 before the first outer casing member 12 by a screw (not shown) or the like. Rotary switches 152a and 152b connected to the switching knobs 16a and 16b are mounted on the circuit board 15. Furthermore, the cable 17 is connected to the circuit board 15 via connectors 153 and 172, for example.

The rotating body 6 has a rotating shaft 61 that protrudes from the sensor unit 10, a connecting member 2 that is fixed to the rotating shaft 61, and a turntable 14 that is fixed to the connecting member 2 by screws 143 and 144. The rotating shaft 61 protrudes toward the operation surface side L1 from the opening 123a of the plate portion 123 before being formed in the first outer casing member 12, and the turntable 14 is coupled to the protruding portion via the connecting member 2. Therefore, when the turntable 14 is manually rotated on the operation surface side L1, the rotary shaft 61 rotates. The sensor unit 10 detects the rotation angle of the rotation shaft 61 and outputs the detection result to the circuit substrate 15. As a result, the circuit board 15 generates a pulse corresponding to the number of rotations of the turntable 14, and outputs it via the cable 17. In the present embodiment, a scale of 100 equal parts is placed around the turntable 14, and the stamp 129 is used as an index, and a pulse is output each time the turntable 14 enters a scale.

(The overall composition of the sensor unit 10)

3 is an exploded perspective view of the sensor unit 10 for applying the manual pulse generating device 1 of the present invention. Figure 4 is a sensor single for a manual pulse generating device 1 to which the present invention is applied. A cross-sectional view of element 10.

As shown in FIGS. 3 and 4, the sensor unit 10 has a cup-shaped sensor housing 52 that opens to the operation surface side L1 to block the opening of the sensor housing 52 and the sensor housing. 52 combined with the sensor cover 51, and the shaft holder 53 fixed to the sensor housing 52, the sensor housing 52, the sensor cover 51 and the shaft holder 53 and the housing described with reference to FIG. 11 constitutes a support 200 together.

The sensor case 52 has a bottom plate portion 521 on the back side L2 and a cylindrical tubular body portion 522 that protrudes from the outer edge of the bottom plate portion 521 toward the operation surface side L1. The sensor cover 51 is made of a resin, and has a cylindrical portion 511 and a circular plate portion 512 that expands in diameter near the end portion of the back surface side L2 of the cylindrical portion 511. In the disk portion 512, two convex portions 513 and 514 extending in the circumferential direction in an arc shape are formed at two places spaced apart in the circumferential direction. Inside the cylindrical portion 511, the annular bearings 55a, 55b are held at positions spaced apart in the direction of the rotation axis L, and the rotary shaft 61 is rotatably supported by the support body 200 via the bearings 55a, 55b (sensor) Cover 51).

On the inner side of the sensor housing 52, an annular engaging gear 63 for constituting the engaging mechanism 7a is concentrically coupled to the rotating shaft 61, and is opposite to the engaging gear 63 on the back side L2, and the magnet holder 62 is concentrically coupled to the rotating shaft 61. The engaging gear 63 and the magnet holder 62 constitute the rotating body 6 together with the turntable 14 and the like described with reference to FIG. 1 and the like. Further, the connecting member 2 has a cylindrical portion 22 to which the end portion on the front side of the rotating shaft 61 is fitted, and a flange portion 21 which is expanded in diameter at the front end of the cylindrical portion 22. As shown in FIG. 4, the positioning screw 26 is fixed to the hole 23 formed in the cylindrical portion 22 so that the distal end thereof touches the rotating shaft 61, and the connecting member 2 is coupled to the rotating shaft 61. In the outer peripheral surface of the rotating shaft 61, the portion touched by the front end of the set screw 26 becomes the flat surface 618.

(Configuration of the sensor unit 8)

Fig. 5 is an explanatory view of a magnetoresistive element 57 for applying the manual pulse generating device 1 of the present invention, and Figs. 5(a) and (b) are explanatory views showing an example of the magnetoresistive element 57 and schematically showing the magnetoresistance. An illustration of an example of a magnetic induction pattern of element 57. Figure 6 is for applying the invention FIG. 6(a), (b), and (c) are explanatory diagrams of signals output from the magnetoresistive element 57, and rectangular pulses of phase A, FIG. 6(a), (b), and (c) are explanatory diagrams of detection signals and the like of the magnetoresistive element 57 of the manual pulse generating device 1. Explain the diagram and the rectangular pulse of the B phase. In the following description, the first cycle of the signal shown in FIG. 6(a) is λ, and the first cycle corresponds to the distance between the N pole and the N pole shown in FIG. 5(a) (S pole and S pole distance).

A sensor portion 8 for detecting the rotation of the rotating shaft 61 (rotating body 6) is formed inside the sensor housing 52. In the present embodiment, the sensor 8 is held by the rotating body 6 (the magnet holder 62). The annular permanent magnet 65 and the magnetic sensor element 56 held on the side of the support 200. The permanent magnet 65 is fixed to the magnet holder 62 via the fixing plate 64. The outer circumferential surface 650 of the permanent magnet 65 is alternately formed with an S pole and an N pole in the circumferential direction at equal angular intervals. Further, the sensor cover 51 in the support 200 is fixed with the sensor substrate 54 so as to straddle the convex portions 513 and 514, and the magnetic sensor element 56 is mounted on the sensor substrate via the component holder 58. 54. In this state, the magnetic sensor element 56 faces the outer circumference of the permanent magnet 65.

In the present embodiment, the magnetic sensor element 56 is a magnetoresistive element 57. As shown in FIG. 5(a), a magnetic induction pattern including a magnetoresistive film is formed on the element substrate 59. In the present embodiment, the magnetic induction pattern has an A-phase magnetic induction pattern 570A for generating a signal of the A phase, and a B-phase magnetic induction pattern 570B for generating a signal of a phase B which is shifted by 1/4 cycle with respect to the phase A signal. Further, the A-phase magnetic induction pattern 570A has a +A phase magnetic induction pattern 570A+ and a -A phase magnetic induction pattern 570A- which generates a reverse phase signal with respect to the +A phase magnetic induction pattern 570A+. Further, the B-phase magnetic induction pattern 570B has a +B phase magnetic induction pattern 570B+ and a -B phase magnetic induction pattern 570B- which generates a reverse phase signal with respect to the +B phase magnetic induction pattern 570B+. Therefore, four terminals 572A+, 572A-, 572B+, and 572B- are formed on the element substrate 59. Further, power supply lines 573e and 573f and a ground line 574 are formed on the element substrate 59, and terminals are formed at the ends of the power supply lines 573e and 573f and the ground line 574 in parallel with the terminals 572A+, 572A-, 572B+, and 572B-. 572Vcce, 572Vccf, 572GND.

As shown in FIG. 5(a), in the magnetoresistive element 57 of the present embodiment, for example, the +A phase magnetic induction pattern 570A+ includes the first segment S1 (A+) and the first segment S1 (A+) in the circumferential direction. R (the direction of relative movement of the permanent magnet) side R1 is separated by the second section S2 (A+) of 1/2 cycle, and the other side R2 of the circumferential zone R with respect to the first section S1 (A+) The third segment S3 (A+) of 1/2 cycle is separated. In the present embodiment, the first segment S1 (A+) includes the fourth segment S4 (A+), and the fourth segment S4 (A+) is separated from the fourth R1 side of the circumferential direction by a quarter cycle. 5 segment S5 (A+). Therefore, the second segment S2 (A+) is separated by 1/2 cycle from the fifth segment S5 (A+) on one side R1 of the circumferential direction R, and the third segment S3 (A+) is opposed to the fourth segment S4. (A+) is separated by 1/2 cycle on the other side R2 of the circumferential direction R. In the +A phase magnetic induction pattern 570A+ thus configured, the first segment S1 (A+), the second segment S2 (A+), the third segment S3 (A+), and the fourth segment S4 (A+) are at the terminals. The 572Vcce is connected in series with the terminal 572GND. Further, the terminal 572A+ is electrically connected between the fourth segment S4 (A+) and the fifth segment S5 (A+), the terminal 572Vcce is connected to the second segment S2 (A+) side, and the terminal 572GND and the third segment S3 are connected. (A+) side connection. This constitutes a half-bridge circuit for the +A phase.

As shown in FIG. 5(b), the fourth segment S4 (A+) has the first retracted pattern R4-1 and the second adjacent to the other side R2 of the circumferential direction R with respect to the first retracted pattern R4-1. Fold pattern R4-2. Further, the fifth segment S5 (A+) has the first retracted pattern R5-1 and the second retracted pattern R5-2 adjacent to the first recursive pattern R5-1 adjacent to one side R1 of the circumferential direction R1. In the above-described configuration, the second segment S2 (A+) has a second foldback pattern R2-1 that is separated by one-half cycle from the one side R1 of the first return pattern R5-1 in the circumferential direction R1, and The 2 fold-back pattern R5-2 is separated from the second fold pattern R2-2 of 1/2 cycle on one side R1 of the circumferential direction R. Further, the third segment S3 (A+) has a first fold pattern R3-1 separated by 1/2 cycle from the other side R2 of the first return pattern R4-1 in the circumferential direction R, and a second foldback The pattern R4-2 is spaced apart from the other side R2 of the circumferential direction R by a second fold pattern R3-2 of 1/2 cycle.

As shown in FIG. 5(a), the basic configuration of the other magnetic induction patterns (the magnetic sensing pattern 570A- for the -A phase, the magnetic induction pattern 570B+ for the +A phase, and the magnetic induction pattern 570B- for the phase B phase) is also the magnetic induction pattern for the +A phase. The 570A+ is the same.

More specifically, the -B phase magnetic induction pattern 570B includes the first segment S1 (B-), and is separated from the first segment S1 (B-) by one-half cycle on one side R1 of the circumferential direction R. The second segment S2 (B-) and the third segment S3 (B-) are separated by 1/2 cycle from the other side R2 of the first segment S1 (B-) in the circumferential direction R. In the present embodiment, the first segment S1 (B-) includes the fourth segment S4 (B-), and is spaced 1/4 of the fourth segment S4 (B-) from the circumferential direction R1. The fifth segment S5 (B-) of the cycle. Therefore, the second segment S2 (B-) is separated from the fifth segment S5 (B-) by one-half cycle on one side R1 of the circumferential direction R, and the third segment S3 (B-) is opposite to the fourth segment. The segment S4 (B-) is separated by 1/2 cycle on the other side R2 of the circumferential direction R. Among the B-phase magnetic induction patterns 570B- thus configured, the first segment S1 (B-), the second segment S2 (B-), the third segment S3 (B-), and the fourth segment S4 ( B-) is connected in series between the terminal 572Vcce and the terminal 572GND. Further, the terminal 572B- is electrically connected between the fourth segment S4 (B-) and the fifth segment S5 (B-), the terminal 572Vcce is connected to the second segment S2 (B-) side, and the terminal 572 GND and the The 3 segment S3 (B-) side is connected. This constitutes a half-bridge circuit for the -B phase.

Here, the +A phase magnetic induction pattern 570A+ and the -B phase magnetic induction pattern 570B- are arranged alternately in the circumferential direction, for example, the fourth segment S4 (A+) is opposite to the fourth segment S4 (B-). One side of R1 on the circumferential direction R is separated by 1/8 cycle.

Next, the -A phase magnetic induction pattern 570A includes the first position at a position adjacent to the direction in which the region of the magnetic induction pattern 570A+ and the -B phase magnetic induction pattern 570B- disposed with the +A phase is extended in the rotation center axis L. The segment S1 (A-) and the second segment S2 (A-) separated from the first segment S1 (A-) by one-half of the circumferential direction R1 and the first segment S1 (A-) with respect to the first segment S1 (A-) S1 (A-) is separated from the other side R2 of the circumferential direction R by a third section S3 (A-) of 1/2 cycle. The first segment S1(A-) includes the fourth segment S4(A-) and the fifth region which is separated by 1/4 cycle from the fourth segment S4(A-) on one side R1 of the circumferential direction R1. Segment S5 (A-). Therefore, the second segment S2 (A-) is separated by 1/2 cycle from the fifth segment S5 (A-) on one side R1 of the circumferential direction R, and the third segment S3 (A-) is opposed to the fourth segment. The segment S4 (A-) is separated by 1/2 cycle on the other side R2 of the circumferential direction R. In the magnetic phase sensing pattern 570A- of the A phase configured as described above, the first segment S1 (A-), the second segment S2 (A-), the third segment S3 (A-), and the fourth segment S4 ( A-) is connected in series between the terminal 572Vccf and the terminal 572GND. Also, terminal 572A- Electrically connected between the fourth segment S4 (A-) and the fifth segment S5 (A-), the terminal 572Vccf is connected to the second segment S2 (A-) side, the terminal 572GND and the third segment S3 ( A-) side connection. This constitutes a half-bridge circuit for the -A phase. In the magnetic phase sensing pattern 570A- of the A phase configured as described above, the fourth segment S4 (A-) and the fifth segment S5 (A+) of the magnetic induction pattern 570A+ of the +A phase are located at the same position in the circumferential direction R, but When viewed from the side where the terminals 572A+ and 572A- are connected, they are located on the opposite side of the circumferential direction R. Therefore, the waveform output from the terminals 572A+ and 572A- becomes a reverse phase.

Then, the +B phase magnetic induction pattern 570B+ includes the first region at a position adjacent to the direction in which the region of the magnetic induction pattern 570A+ and the -B phase magnetic induction pattern 570B- disposed with the +A phase is extended in the rotation center axis L. The segment S1 (B+) is separated from the first segment S1 (B+) by the second segment S2 (B+) of the one-half cycle R1 on the one side R1 of the circumferential direction R and the first segment S1 (B+) The other side R2 of the circumferential direction R is separated by a third section S3 (B+) of 1/2 cycle. The first segment S1 (B+) includes a fourth segment S4 (B+), and a fifth segment S5 that is separated by 1/4 cycle from one side R1 of the fourth segment S4 (B+). B+). Therefore, the second segment S2 (B+) is separated by 1/2 cycle from the fifth segment S5 (B+) on one side R1 of the circumferential direction R, and the third segment S3 (B+) is opposed to the fourth segment S4. (B+) is separated by 1/2 cycle on the other side R2 of the circumferential direction R. Here, the +B phase magnetic induction pattern 570B+ and the -A phase magnetic induction pattern 570A- are arranged alternately in the circumferential direction, for example, the fourth segment S4 (B+) is opposite to the fourth segment S4 (A-). The other side R2 of the circumferential direction R is separated by 1/8 cycle. In the +B phase magnetic induction pattern 570+B thus configured, the first segment S1 (B+), the second segment S2 (B+), the third segment S3 (B+), and the fourth segment S4 (B+) The terminal 572Vccf is connected in series with the terminal 572GND. Further, the terminal 572B+ is electrically connected between the fourth segment S4 (B+) and the fifth segment S5 (B+), the terminal 572Vccf is connected to the second segment S2 (B+) side, and the terminal 572GND and the third segment S3 are connected. (B+) side connection. This constitutes a half-bridge circuit for the +B phase. In the +B phase magnetic induction pattern 570B+ thus configured, the fourth segment S4 (B+) and the fifth segment S5 (B-) of the -B phase magnetic induction pattern 570B+ are located at the same position in the circumferential direction R, but are self-joined. When viewed from the side of the terminals 572B+ and 572B-, it is located on the opposite side of the circumferential direction R. Therefore, the waveform output from the terminals 572B+ and 572B- becomes a reverse phase.

In the sensor unit 8 configured as described above, when the rotating body 6 (the permanent magnet 65) rotates, the difference between the signals output from the terminals 572A+ and 572A- is the signal of the A phase shown by the solid line in FIG. 6(a). 81a, the difference between the signals output from the terminals 572B+, 572B- is the signal 81b of the B phase indicated by the broken line in Fig. 6(a). The signal is converted into the A-phase rectangular pulse 82a shown in FIG. 6(b) and the rectangular signal 82a shown in FIG. 6(b) by a semiconductor device mounted on the sensor substrate 54 or a comparator provided in the semiconductor device mounted on the circuit substrate 15. (c) The rectangular phase 82b of the B phase shown, and the rectangular pulses 82a and 82b are output via the cable 17.

Thus, when the rectangular pulses 82a, 82b are generated, as described with reference to FIG. 5, in the magnetoresistive element 57, the +A phase magnetic induction pattern 570A+, the -A phase magnetic induction pattern 570A-, and the +B phase magnetic induction pattern 570B+ The -B phase magnetic induction pattern 570B- has a first segment S1 (fourth segment S4 and fifth segment S5) separated by a half cycle in the circumferential direction R, and a second segment S2 and a third region, respectively. Segment S3. Therefore, it is possible to suppress deformation or the like of the detection signal due to the coercive force of the magnetic induction pattern of the magnetoresistive element 57. For example, in the +A phase magnetic induction pattern 570A+, when the fourth segment S4 (A+) and the fifth segment S5 (A+) constituting the first segment S1 (A+) are opposed to the N pole, the second region Since the segment S2 (A+) and the third segment S3 (A+) are opposed to the S pole, even if the coercive force of the magnetic induction pattern of the magnetoresistive element 57 is asymmetric with respect to polarity, the detection signal can be suppressed from being deformed. Wait. Further, since the second segment S2 and the third segment S3 are disposed on both sides of the first segment S1 (the fourth segment S4 and the fifth segment S5), the arrangement can be shortened in the magnetoresistive element 57. There is a size of the circumferential direction R of the region of the magnetic induction pattern 570A for the A phase and the magnetic induction pattern 570B for the B phase.

(magnetic shielding structure)

2 and 3, in the present embodiment, since the permanent magnet 65 and the magnetic sensor element 56 are used in the sensor unit 8, the magnetic shield is provided on the back side L2 with respect to the sensor 8. . In the present embodiment, the bottom plate portion 521 of the sensor case 52 is formed by a magnetic material such as steel material such as SPPC (Steel Plate Cold Commercial), and the bottom plate portion 521 is formed on the back side L2 to cover the sensor. The magnetic shield of the portion 8. Here, in the sensor case 52, since the bottom plate portion 521 is integrated with the cylindrical body portion 522, the entire sensor case 52 is made of a magnetic material. Therefore, the sensor portion 8 is surrounded by the cylindrical body portion 522 of the sensor case 52, that is, the magnetic shield. Further, in the present embodiment, the sensor cover 51 is made of resin. Therefore, the sensor portion 8 is not covered by the magnetic shield on the operation surface side L1.

(Configuration of the engagement mechanism 7a and the spring pressure adjustment mechanism 7b)

Fig. 7 is an explanatory view of an engaging mechanism 7a and the like of the sensor unit 10 to which the manual pulse generating device 1 of the present invention is applied, and Figs. 7(a) and (b) are views of the engaging gear 63 from the back side L2. The rear view of the engaging gear 63 and the like is observed from the back side L2. Fig. 8 is a perspective view of the shaft holder 53 used in the engaging mechanism 7a shown in Fig. 7.

As shown in FIGS. 3 and 4, the magnet holder 62 has a cylindrical portion 621, a first disc portion 622 whose diameter is increased at the end portion of the back surface side L2 of the cylindrical portion 621, and a back surface of the first disc portion 622. The second disc portion 623 whose diameter is increased by the side L2. In the first disc portion 622, the positioning screw 627 is fixed to the hole 625 penetrating in the radial direction so that the distal end thereof touches the rotating shaft 61, and the magnet holder 62 is coupled to the rotating shaft 61. In the present embodiment, in the outer peripheral surface of the rotating shaft 61, the portion touched by the front end of the set screw 627 is a flat surface 619. Further, in the magnet holder 62, a screw hole 622a for fixing the engagement gear 63 is formed in the first disc portion 622, and a screw hole 623a for fixing the permanent magnet 65 is formed in the second disc portion 623.

An annular engagement gear 63 is superposed on the operation surface side L1 with respect to the first disc portion 622. In the present embodiment, the engaging gear 63 has an annular portion 632 and a side plate portion 631 that protrudes from the outer edge of the annular portion 632 toward the operation surface side L1, and the outer peripheral surface 630 of the side plate portion 631 is formed at equal angular intervals. Teeth 633 and slot 634. Further, a hole 632a is formed in the annular portion 632, and the screw 639 is fixed to the screw hole 622a of the first disc portion 622 of the magnet holder 62 through the hole 632a, thereby fixing the engaging gear 63 to the first circle. Plate portion 622.

As shown in FIG. 4 and FIG. 7, a resin shaft holder 53 is attached to the back side L2 of the disc portion 512 in the sensor cover 51, and between the shaft holder 53 and the engagement gear 63 is disposed. versus The abutting member 70 that the outer peripheral surface 630 of the engaging gear 63 abuts and the spring member 75 that presses the abutting member 70 against the outer peripheral surface 630 of the engaging gear 63. In the present embodiment, the abutting member 70 has an abutting portion 701 that extends in the direction of the rotation axis L of the engaging gear 63 and abuts against the teeth 633. In the present embodiment, the abutting member 70 is a rod-shaped shaft 71 extending in the direction of the central axis of rotation L, and the abutting portion 701 is formed by a portion of the outer peripheral surface facing the side of the engaging gear 63. In the present embodiment, the shaft 71 is made of metal. Here, the shaft 71 (abutment portion 701) has a length equal to or greater than the width of the tooth 633 in the direction of the rotation center axis L, and abuts against the entire direction of the rotation center axis L of the tooth 633.

The spring member 75 is a coil spring 76, and a portion of the coil spring 76 that abuts against the shaft 71 is an end surface of the end portion of the wire constituting the coil spring 76 that does not protrude toward the shaft 71.

In the present embodiment, when the shaft 71 and the coil spring 76 are held by the sensor cover 51, the shaft holder 53 shown in Fig. 8 is used. The shaft holder 53 has a connecting plate portion 531 that overlaps the disk portion 512 of the sensor cover 51 on the back side L2, and an angular column portion 535 that protrudes from the center in the circumferential direction of the connecting plate portion 531 toward the back side L2. The portion 535 is formed with a circular hole 538 that penetrates in the radial direction. Further, in the angular column portion 535, a shaft support hole 537 extending in the direction of the rotation center axis L is formed on the radially inner side, and the hole 538 is connected to the central portion of the shaft support hole 537. Notches 536a and 536b are formed in the connecting plate portion 531. The notches 536a and 536b are respectively fitted into the two cylindrical protrusions 516a and 516b of the disc portion 512 of the sensor cover 51 that protrude from the back side L2. Therefore, as long as the connecting plate portion 531 of the shaft holder 53 is superposed on the circular plate portion 512 of the sensor holder 51 so that the cylindrical protrusions 516a and 516b are fitted into the notches 536a and 536b, the cylindrical protrusion is formed. The shaft holder 53 can be fixed to the sensor cover 51 by screwing or riveting the 516a and 516b.

As shown in FIG. 4, the shaft 71 is housed in the shaft support hole 537, and the coil spring 76 is received in the hole 538. Further, the inner diameter of the hole 538 is different from the side front side portion 538a where the shaft 71 is located and the rear side rear portion 538b which is opposite to the side where the shaft 71 is located, and the rear side portion 538b becomes a screw hole having an inner diameter larger than the front side portion 538a. . Here, the coil spring 76 is located at the front side portion 538a, after A positioning screw 539 is fixed to the side portion 538b. As a result, the coil spring 76 presses the shaft 71 against the outer peripheral surface 630 of the engaging gear 63. The engagement mechanism 7a is configured as described above.

Further, the spring pressure of the coil spring 76 can be adjusted by performing the following steps. For example, after the engaging gear 63 is attached to the rotating shaft 61 via the magnet holder 62, the shaft holder 53 is fixed to the sensor cover 51 in a state where the shaft 71 is housed in the shaft support hole 537. Then, after the coil spring 76 is inserted into the hole 538 of the shaft holder 53, the screw member, that is, the set screw 539 is fixed into the hole 538 from the radially outer side. Here, the positioning screw 539 is a screw member that can be held by the support body 200 side (the shaft holder 53) so as to be movable in the bending direction of the coil spring 76 (spring member 75). Therefore, the spring pressure of the coil spring 76 can be adjusted by adjusting the tightening amount of the set screw 539. The spring pressure adjusting mechanism 7b is configured as described above.

(Configuration of the angular position adjusting mechanism 7c of the permanent magnet 65)

Fig. 9 is a perspective view of the permanent magnet 65 and the like of the sensor unit 10 for applying the manual pulse generating device 1 of the present invention as viewed from the back side L2.

As shown in FIGS. 3, 4, and 9, the fixing plate 64 has an annular portion 641, and an annular convex portion that protrudes toward the operation surface side L1 is formed between the inner edge and the outer edge of the annular portion 641. 642. The permanent magnet 65 is fixed to the outer peripheral side of the annular convex portion 642 by a method such as the following. The step portion 651 facing the radially inner side and the back side L2 is formed on the back side L2 of the permanent magnet 65, and the outer peripheral end portion of the annular portion 641 of the fixing plate 64 abuts against the step portion 651. In the annular portion 641, a long hole 643 is formed in the radial direction inner side of the convex portion 642 at four places in the circumferential direction. Here, the long hole 643 extends in the circumferential direction.

In the present embodiment, after the permanent magnet 65 is fixed to the fixing plate 64, and the fixing plate 64 is fixed to the second circular plate portion 623 of the magnet holder 62, the screw 694 is fixed from the back side L2 through the long hole 643 to The screw hole 623a of the second disc portion 623 is in the middle. Here, in the second disc portion 623 of the magnet holder 62, a circular convex portion 624 is formed on the back surface side L2, and the convex portion 624 is fitted into the hole 641a of the annular portion 641 of the fixing plate 64. Thereby, fixing plate 64 and permanent magnet are performed The radial positioning of the iron 65.

When the fixing plate 64 is fixed to the second disc portion 623 of the magnet holder 62, the screw 694 is loosely fixed in advance, and the shaft portion of the screw 694 and the long hole 643 are guided to adjust the angle of the fixing plate 64. The position is then tightened by the screw 694, and the fixing plate 64 is fixed to the second disc portion 623 of the magnet holder 62. As a result, the angular position of the permanent magnet 65 can be adjusted. The angular position adjusting mechanism 7c for the permanent magnet 65 is configured as described above.

According to the angular position adjusting mechanism 7c described above, the angular position of the permanent magnet 65 on the side of the rotating body 6 can be adjusted. Therefore, in FIG. 6, the timing 86 of the signal level 81A of the phase A detected by the sensor unit 8 and the signal level 81b of the phase B signal can be made, and the engaging mechanism described with reference to FIG. 7 and the like. The 7a center shaft 71 is maximally intruded to coincide with the time of the groove 634 between the two adjacent teeth 633 in the plurality of teeth 633.

(The main effect of this form)

As described above, in the manual pulse generator 1 of the present embodiment, when the rotary body 6 is manually rotated, the sensor unit 8 detects the rotation and generates a pulse based on the detection result. Here, the sensor unit 8 has a permanent magnet 65 that rotates in conjunction with the rotating body 6, and detects the rotation of the permanent magnet 65 by the magnetic sensor element 56 held on the side of the support 200. Therefore, unlike the optical sensor, even when foreign matter such as oil adheres to the sensor unit 8, the rotation of the permanent magnet 65 (rotation of the rotating body 6) can be appropriately detected.

Further, the magnetoresistive element 57 is used as the magnetic sensor element 56, and in the case where the magnetoresistive element 57 is used, the permanent magnet 65 is equivalent to a distance between the S pole and the S pole (one of the N pole and the N pole). The movement of the two is equivalent to the output of the two phases. Therefore, the magnetization number is 1/2 as compared with the use of the Hall element, and therefore the permanent magnet 65 is small, so that the sensor unit 10 and the manual pulse generating device 1 can be miniaturized.

Moreover, since the engagement mechanism 7a is provided between the rotating body 6 and the support body 200, the operational feeling is excellent, and the rotating body 6 can be stopped at a specific angular position. Also, in the engaging mechanism 7a The abutting member 70 that engages with the teeth 633 of the engaging gear 63 has an abutting portion 701 that extends in the direction of the rotation axis L of the engaging gear 63 and abuts against the teeth 633. Therefore, the contact area of the abutting member 70 and the teeth 633 is large. Therefore, the feeling of engagement can be surely obtained, and the abrasion of the teeth 633 and the like can be suppressed. Further, the abutting member 70 is a rod-shaped shaft 71 extending in the direction of the central axis of rotation L, and the abutting portion 701 is formed by a portion of the outer peripheral surface facing the side of the engaging gear 63. Therefore, regardless of the direction in which the shaft 71 faces, the outer peripheral surface (the abutting portion 701) abuts against the teeth 633. Further, the spring member 75 for the engaging mechanism 7a is a coil spring 76, and the portion of the coil spring 76 that abuts against the shaft 71 (the abutting member 70) is such that the end portion of the wire constituting the coil spring 76 does not protrude toward the shaft 71. End face. Therefore, the coil spring 76 can be restrained from being caught by the shaft 71, so that the coil spring 76 can be directly brought into contact with the shaft.

Further, in the case where the shaft 71 is brought into contact with the engaging gear 63, since the contact area between the contact member 70 (shaft 71) and the tooth 633 is large, it is necessary to appropriately set the contact pressure, and in this embodiment, Since the spring pressure adjusting mechanism 7b is provided, the abutting pressure can be appropriately set. Further, the shaft 71 has a length equal to or greater than the width of the teeth 633 and abuts against the width of the teeth 633 as a whole. Therefore, the contact area with the teeth 633 is larger than the case where the shaft 71 abuts against one of the width directions of the teeth 633. Therefore, abrasion of the teeth 633 and the like can be suppressed. Further, in the spring pressure adjusting mechanism 7b, a positioning screw 739 (screw member) that can be held by the support member 200 side in the bending direction of the spring member 75 (the coil spring 76) is used. Therefore, the load of the engaging mechanism 7a can be easily adjusted, and the engaging mechanism 7a can be easily assembled.

Further, in the present embodiment, the time between the signal 81a of the A phase detected by the sensor unit 8 and the signal 81b of the B phase coincides with the maximum intrusion of the axis 71 into the plurality of teeth 633 in the circumferential direction. The time of the groove 634 between the two teeth 633 is the same. Therefore, the state of the signal 81a of the A phase and the signal 81b of the B phase can be made coincident in a state where the rotating body 6 is stopped by the engaging mechanism 7a. Further, in the present embodiment, the angular position adjusting mechanism 7c is provided to adjust the angular position of the permanent magnet 65 on the side of the rotating body 6, the angular position of the engaging gear 63 on the side of the rotating body 6, and the rotation in the angular position of the shaft 71. The angular position of the permanent magnet 65 on the side of the body 6. because Therefore, the time at which the signal 81a of the A phase detected by the sensor unit 8 coincides with the level of the signal 81b of the B phase can be maximized and the axis 71 is intruded into the circumferential direction of the plurality of teeth 633. The time of the groove 634 between the teeth 633 is the same, and the time at which the click feeling is obtained coincides with the time of the output pulse 85. Further, according to the angular position adjusting mechanism 7c, the angular position of the rotating body 6 can be matched with the time of the output pulse 85. In particular, when the permanent magnet 65 and the magnetic sensor element 56 are used in the sensor unit 8, the magnetization position is not observed in the magnetic scale (the permanent magnet 65), so that it is difficult to make the above-mentioned time coincide with the assembly, but according to the angle Since the position adjusting mechanism 7c can adjust the angular position of the permanent magnet 65, it is easy to set the permanent magnet 65 at the optimum angular position.

Further, in the present embodiment, the magnetic shield body including the bottom plate portion 521 of the sensor case 52 formed of a magnetic material is provided on the back side L2 of the sensor portion 8. Therefore, even when the back side L2 of the manual pulse generating device 1 is operated by being attached to a processing machine or the like by a magnet, the influence of the magnet on the sensor portion 8 can be alleviated by the magnetic shield. Further, the cylindrical body portion 522 of the sensor case 52 covers the side of the sensor portion 8 as a magnetic shield. Therefore, the sensor portion 8 can be effectively magnetically shielded. On the other hand, in the support body 200, the sensor cover 51 that closes the opening of the cylindrical main body portion 522 is made of a resin (non-magnetic material), so that the sensor cover 51 can be formed of a lightweight and inexpensive material. Further, since the sensor cover 51 is made of a resin (non-magnetic material), it is easy to make the sensor cover 51 suitable for holding the magnetic sensor element 56 or holding the shaft holder 53 for the engagement mechanism 7a. Composition.

(Other embodiments)

In the above embodiment, when the time during which the load is generated in the engagement mechanism 7a and the time when the pulse 85 is output, the angular position adjustment mechanism 7c adjusts the angular position of the permanent magnet 65 on the side of the rotating body 6, but the adjustment rotation can also be set. An angular position adjustment mechanism of the angular position of the engaging gear 63 on the body 6 side, the angular position of the shaft 71, or the angular position of the magnetic sensor element 56.

In the above embodiment, the spring member 75 for the engaging mechanism 7a is set as a spiral Spring 76, but a leaf spring or a coil spring can also be used. Further, in the above-described embodiment, the rod-shaped shaft 71 is used as the abutting member 70 having the abutting portion 701 that extends in the direction of the rotation axis L of the engaging gear 63 and abuts against the teeth 633, but When the engaging gears 63 are formed between the engaging gears 63, abutting members 70 having a rod-like or plate-like shape in which the abutting portions 701 are formed in a circular arc shape may be used.

In the present embodiment, when the magnetic shield is provided on the back side L2 of the sensor unit 8, the sensor case 52 is formed of a magnetic material, but the sensor case 52 may be formed of a non-magnetic material. The back side L2 of the detector portion 8 is provided with a magnetic shield formed of a sheet-like magnetic material. Further, the second outer casing member 13 may be formed of a magnetic material, and the second outer casing member 13 may be a magnetic shield of the back side L2 of the sensor portion 8.

Further, in the present embodiment, the manual pulse generating device 1 is connected to the device 18 via the cable 17, but the manual pulse generating device 1 may be directly attached to the device 18.

2‧‧‧Connected components

3‧‧‧shims

6‧‧‧Rotating body

7a‧‧‧Cordging mechanism

7b‧‧ ‧ spring pressure adjustment mechanism

8‧‧‧Sensor Department

10‧‧‧Sensor unit

21‧‧‧Flange

22‧‧‧Cylinder

23‧‧‧ hole

26‧‧‧Setting screws

51‧‧‧Sensor cover

52‧‧‧Sensor housing

54‧‧‧Sensor substrate

55a, 55b‧‧‧ bearing

56‧‧‧Magnetic sensor components

57‧‧‧Magnetoresistive components

58‧‧‧Component holder

59‧‧‧ element substrate

61‧‧‧Rotary axis

62‧‧‧Magnet holder

63‧‧‧Snap gear

64‧‧‧ fixed board

65‧‧‧ permanent magnet

70‧‧‧Abutment components

71‧‧‧Axis

75‧‧‧Spring components

76‧‧‧Helical spring

200‧‧‧Support

511‧‧‧Cylinder

512‧‧‧round board

521‧‧‧ bottom plate of the sensor housing

522‧‧‧The cylindrical body of the sensor housing

535‧‧‧ angular column

537‧‧‧Axis support hole

538‧‧‧ hole

538a‧‧‧ front part

538b‧‧‧ rear part

539‧‧‧Locating screws (screw components)

618‧‧‧flat surface

619‧‧‧flat surface

621‧‧‧Cylinder

622‧‧‧1st round plate

623‧‧‧2nd Disc Department

623a‧‧‧ screw hole

624‧‧‧ convex

625‧‧‧ hole

627‧‧‧Setting screws

630‧‧‧ outer perimeter

631‧‧‧ Side panel

632‧‧‧Round Department

633‧‧‧ teeth

634‧‧‧ slots

639‧‧‧screw

641‧‧‧The Ministry of the Ring

641a‧‧ hole

642‧‧‧ convex

650‧‧‧ outer perimeter

651‧‧‧

701‧‧‧Apartment

L‧‧‧Rotation center axis

L1‧‧‧Operation side

L2‧‧‧ back side

Claims (21)

A manual pulse generating device comprising: a support; a rotating body rotatably supported by the support and manually rotated; and a sensor portion detecting rotation of the rotating body; and sensing according to the sensing The manual pulse generating device is characterized in that the sensor portion includes a permanent magnet and a magnetoresistive element, and the permanent magnet rotates in conjunction with the rotating body, and the magnetoresistive element is held by the support. side. A manual pulse generating device according to claim 1, wherein a magnetic shield is provided on a side opposite to a side on which the sensor body is manually operated with respect to the sensor portion. The manual pulse generating device of claim 2, wherein the support body includes a sensor housing that houses the sensor portion, and the sensor housing includes a bottom plate portion opposite to a side on which the rotary body is manually operated. And the cylindrical main body portion, the cylindrical main body portion extends from the bottom plate portion to the side of the rotating body and surrounds the sensor portion, and the bottom plate portion is formed of a magnetic plate to constitute the magnetic shield. The manual pulse generating device of claim 3, wherein the cylindrical body portion is formed of a magnetic plate to constitute a magnetic shield. A manual pulse generating device according to claim 3, wherein said support body includes a sensor cover covering an opening of said cylindrical body portion, said sensor cover being formed of a non-magnetic material. The manual pulse generating device according to claim 4, wherein the bottom plate portion is formed integrally with the cylindrical body portion, and the entire sensor case is made of a magnetic material to form a magnetic shield. The manual pulse generating device of claim 5, wherein the sensor cover comprises a cylindrical portion and a circular plate portion, and the circular plate portion is in the cylindrical portion and hands on the rotating body The side of the movement is the diameter of the end side of the opposite side, and the disc portion is coupled to the tubular body portion so as to cover the opening of the cylindrical body portion, and has an annular shape inside the cylindrical portion. The bearing and the above-described rotating body are rotatably supported via the above bearing. The manual pulse generating device according to any one of claims 1 to 7, wherein the magnetoresistive element has a magnetic induction pattern for phase A and a magnetic induction pattern for phase B, and the phase B generates a phase with respect to the magnetic induction pattern for phase A by using a magnetic induction pattern. The generated signal is shifted by a signal of 1/4 cycle, and the A-phase magnetic induction pattern and the B-phase magnetic induction pattern respectively include a first segment, a second segment, and a third segment, and the second segment is opposite to the second segment. The first segment is spaced apart from one side of the relative movement direction of the permanent magnet by a half cycle, and the third segment is separated from the first segment by 1/2 of the other side of the relative movement direction. cycle. The manual pulse generating device of claim 8, wherein the first segment includes a fourth segment and a fifth segment, and the fifth segment is spaced apart from the fourth segment by a quarter cycle in the relative moving direction. The second segment is separated from the fifth segment by one-half cycle on one side of the relative movement direction, and the third segment is separated from the fourth segment on the other side of the relative movement direction. Open 1/2 cycle. The manual pulse generating device of claim 9, wherein the A-phase magnetic induction pattern has a +A phase magnetic induction pattern and a -A phase magnetic induction pattern, and the -A phase magnetic induction pattern is generated with respect to the +A phase magnetic induction pattern. In the reverse phase signal, the B-phase magnetic induction pattern has a +B phase magnetic induction pattern and a -B phase magnetic induction pattern, and the -B phase magnetic induction pattern generates a signal opposite to the +B phase magnetic induction pattern. The +A phase magnetic induction pattern, the -A phase magnetic induction pattern, the +B phase magnetic induction pattern, and the -B phase magnetic induction pattern include the first segment, the second segment, and the third segment, The fourth segment and the fifth segment. The manual pulse generating device according to claim 9, wherein an S pole and an N pole are alternately formed in the circumferential direction at equal intervals on the outer circumferential surface of the permanent magnet, and the magnetoresistive element faces the outer circumference of the permanent magnet, The fourth segment and the fifth segment are opposite to one of the S pole and the N pole, and the second segment and the third segment are opposite to the other of the S pole and the N pole to. The manual pulse generating device of claim 1, wherein an engaging mechanism is provided between the rotating body and the support body, and the engaging mechanism includes an engaging gear that is circumferentially arranged on an outer peripheral surface of the rotating body side. a plurality of teeth; an abutting member that abuts against an outer circumferential surface of the engaging gear; and a spring member that presses the abutting member against an outer circumferential surface of the engaging gear. The manual pulse generating device of claim 12, wherein the abutting member includes an abutting portion that extends in a direction of a rotation axis of the engaging gear and abuts against the tooth. The manual pulse generating device of claim 13, wherein the abutting member is a circular rod-shaped shaft extending in a direction of a rotation axis of the engaging gear. The manual pulse generating device according to claim 12, wherein the abutting portion has a length equal to or greater than a width of the tooth in the axial direction, and is in contact with the entire axial direction of the tooth. The manual pulse generating device of claim 13, wherein the support body is provided with a spring pressure adjusting mechanism that adjusts a spring pressure of the spring member. The manual pulse generating device of claim 16, wherein the spring pressure adjusting mechanism includes a screw member that is movably held to the support body side in a bending direction of the spring member. The manual pulse generating device of claim 13, wherein the spring member is a coil spring, and a portion of the coil spring that abuts against the abutting member is an end surface of an end portion of a wire constituting the coil spring that does not protrude toward the abutting member. . The manual pulse generating device of claim 12, wherein the time at which the signal of the phase A detected by the sensor portion coincides with the level of the signal of the phase B, and the abutting member are maximally intruded into the plurality of teeth The time of the groove between the two adjacent teeth in the circumferential direction is the same. The manual pulse generating device of claim 12, wherein an angular position adjusting mechanism is provided, wherein the angular position adjusting mechanism adjusts an angular position of the permanent magnet on the rotating body side, an angular position of the engaging gear on the rotating body side, and the above At least one of the angular positions of the abutment members. The manual pulse generating device of claim 12, wherein an angular position adjusting mechanism is provided, wherein the angular position adjusting mechanism adjusts an angular position of the permanent magnet on the rotating body side and an angular position of the magnetoresistive element on the support side At least one.