JPH10113837A - Manual type pulse generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain accurate stop position due to the attraction force of meshed magnetic force and also to accurately correct due to the repulsion of the magnetic force, even if it gets out of position. SOLUTION: This pulse generator is constituted to be provided with a handle plate 3 with graduation 3A thereon, wherein a scale 1A is divided into 100 divisions 1A on a handle 1 with a knob, and a back face cap 19. In this case, a shaft 8 rotated inside by the handle 1 is provided with an outside drum 15 in which an outside projection 5 and an inside groove 13 are formed while being connected by an inside drum 14 comprising a plastic molded magnet, and a magnetic sensor 10 on a base plate 16 is provided in the inside groove 13 of the outer drum 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incremental which converts a rotation angle of a rotating shaft into an electric signal in proportion thereto and outputs the electric signal so that it can be used as a part of a numerically controlled machine tool or a robot. Regarding the rotary encoder type manual pulse generator, more specifically, since the inner drum connected to the inner rotating shaft rotates and stops on the outer drum, an accurate stop position is obtained by the attraction force of the engaged magnetic force. Not only
The present invention relates to a manual pulse generator using a magnetic sensor that detects a flow of a magnetic force by accurately adjusting the position by a magnetic attraction force and a repulsive force even if the position is shifted.

Also, according to the present invention, when the inner concavo-convex magnetic drum of the inner rotating shaft rotates and stops on the outer concavo-convex drum of the main body, the position where the protrusions of the inner and outer concavo-convex drums are aligned by the attraction and repulsion of the magnetic force. The present invention relates to a manual pulse generator that can generate electric pulses corresponding to the number of rotations and the direction by transmitting the strength of the magnetism due to the unevenness of the drum to the magnetic sensor, respectively, because the motor stops.

[0003]

2. Description of the Related Art Recently, a manual pulse generator, which is mounted to meet the proper characteristics of electric and electronic products, converts a rotation angle of a rotating shaft into a pulse which is an electric signal proportional thereto and outputs the pulse. 2. Description of the Related Art Pulse generators are widely used in numerically controlled machine tools, robots, and the like. And the output of most manual pulse generators is 90 ° through an external terminal block.
A and B phases having the following phase difference. The conventional manual pulse generator having such a feature is designed so that, when the hand-held pulse generator is rotated by hand and then released, the handle scale on the front surface and the scale of the handle plate (or fixed scale plate) match at any position. It is made.

That is, the operation of the manual pulse generator is such that the electric signals of the A and B phases having a phase difference of 90 ° are rotated 100 times per rotation as the internal shaft gear is rotated in proportion to the rotation of the handle. A pulse is generated and goes out through the terminal block. At this time, the pin by the force of the internal spring is assembled on the concave and convex part of the gear, this is the part stopped by the elastic force of the spring and the friction of the pin, the external handle scale and the handle plate (or fixed scale plate) scale. Will stop at the position where
Mechanical friction noise, gear wear during long-term use, and a decrease in the precision of the stop position, which was troubled by machining tolerances, occurred.

Accordingly, in the conventional stopping method using a manual pulse generator, the pin comes into contact with the unevenness of the gear by the force of the spring on the uneven gear, and the shaft is rotated by the handle. It sometimes started and stopped while generating click noise. Furthermore, as for the internal slit, the light transmitting element and the light receiving element on the substrate are assembled using two slits, a large slit and a small slit, so that the assembling work is complicated, so that much time is required during the production and assembling process. In addition, there are many problems in handling and working of expensive large slits. Then, a manual pulse generator that obtains A- and B-phase electrical signals by using another sensing element instead of the light-transmitting element and the light-receiving element on the substrate is required.

Further, conventionally, a tension maintaining and fixed position stopping device comprising a leaf spring and a pin is provided in the internal rotating gear, which is not only inconvenient due to noise and wear, but also for detecting a slit and a pulse for pulse detection. It is composed of hot light-receiving and light-transmitting elements and is complicated.

[0007]

In view of the above circumstances, the present invention has a magnetic sensor installed in the inner groove of the outer drum in place of the conventional light transmitting element and light receiving element, and uses a conventional spring. Even without it, the magnets of S and N poles are magnetized on the inner and outer drums to stop at the correct position by using the attraction and repulsion of the magnetic force, thereby eliminating friction noise and wear, You can get a soft feel,
It is another object of the present invention to provide an improved manual pulse generator which can reduce costs by installing a magnetic sensor in the inner groove of the outer drum to reduce the number of parts and the assembly time.

Another object of the present invention is to provide a constant rotation tension force (rotation torque) due to no noise, no friction and no wear during manual rotation due to the repulsion and suction force of the outer uneven drum and the inner uneven magnetic drum. It can be maintained, and when the unevenness of the inner uneven magnetic drum rotates and stops at the unevenness of the outer uneven drum, it stops at the position where the protrusions of the inner and outer uneven drum match due to the attraction and repulsive force of the magnetic force. A manual pulse generator capable of transmitting electric strength corresponding to the number of rotations and the direction by transmitting the magnetic strength due to a large number of unevenness to each magnetic sensor in the outer groove of the inner uneven magnetic drum. Is to provide.

[0009]

In order to achieve the above object, a manual pulse generator according to the present invention comprises a handle (1) to which a handle (21) is attached, and a scale (1) having 100 divisions.
A) is engraved, and in the manual pulse generator provided with the handle plate (3) engraved with the graduation (3A) and the rear cap (19), the shaft internally rotated by the handle (1) ( 8) has an outer drum (1) formed with an outer protrusion (5) and an inner groove (13) while being connected to an inner drum (14) made of a plastic injection magnet.
5) is installed, and the inner groove (1) of the outer drum (15) is provided.
3) A magnetic sensor (10) on a substrate (16) is installed on the substrate (16).

Further, according to the present invention, the handle (51) to which the handle is attached is engraved with a scale of 100 equal parts, and the handle (51) extends the fixed scale plate (52) to form the rear cap (63) and the four caps. In the manual pulse generator provided with the terminal block (62) of two terminals, the handle (5)
1) is attached to the inner rotating shaft (57) with the inner uneven drum (5).
8), a number of irregularities (56 ') composed of a magnet (59) and an inner irregularity drum (58').
0) and a main body (53), an oilless bearing (64) is inserted, and an outer magnetic drum (54) of a large number of irregularities (56) is fixed, and a substrate (61) is fixedly installed under the outer magnetic drum (54). ) Installed in the magnetic sensors (60, 6
0 ′) is the inner groove (55) of the outer uneven drum (54).
And the rear cap (63) is fixedly installed behind it.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing a manual pulse generator according to a first embodiment of the present invention. The manual pulse generator of the present invention has an inner drum (14) coupled to an internal rotation shaft (8). Since it rotates and stops on the outer drum (15), not only can an accurate stop position be obtained by the attraction force of the engaged magnetic force, but also if the displacement occurs, the position correction can be accurately adjusted by the repulsive force of the magnetic force. (See FIG. 3B).

Therefore, in the present invention, the position is controlled so as to stop at a fixed position by using the magnetic force of the inner drum (14) and the outer drum (15) of the plastic injection magnet, rather than performing the position control by the conventional spring. Therefore, there is no noise at the time of operation, there is no abrasion due to non-contact, and it has a soft touch. Detection is performed using a magnetic sensor (10) on a substrate (16) installed in an inner groove (13) of the outer drum (15) through which a side surface of the inner drum (14) passes.

First, as shown in the connection diagram of FIG. 2, a handle (1) having a handle (21) which can be easily rotated by hand is provided, and the handle (1) is provided.
Has a scale (1A) divided into 100 equal parts.
The handle plate (3), in which one daily scale (3A) is engraved at a certain position on the handle scale (1A),
Push in an oilless bearing (not shown) to prevent vibration when the internal rotating shaft (8) rotates,
Assemble the outer drum (15) in which the poles and the N poles are magnetized in a predetermined position, and mount the substrate (16) and the rear cap (19).
There are two cylindrical substrate assembly bosses (2) formed so as to be able to fix the rear cap cap assembly assembly boss (2 ').

A shaft (8) for transmitting the rotation of the handle (1) to the inner drum (14) magnetized so that the S and N poles are alternately equally divided outward by 100 is assembled. (8) is assembled to the oilless bearing assembled to the handle plate (3), and is fixed after being inserted into the assembly hole of the handle (1). The handle plate (3) is provided with an assembly groove (4) inside so that the outer protrusion (5) of the outer drum (15) can be assembled, so that the stop position of the inner drum (14) is fixed. Can be assembled.

Subsequently, when two magnetic sensors (10) are installed on the circular substrate (16) into which the electronic components are inserted and the inner drum (14) rotates, it is moved to the inner drum (1).
As shown in FIG. 3A, two magnetic fields are provided in the inner groove (13) of the outer drum (15) in order to detect a magnetic flow between the outer drum (4) and the outer drum (15) and to convert it into an electric signal. Assemble each of the sensors (10). Then, after assembling a terminal block (18) having four signal output terminals, it is assembled to two board fixing assembly bosses (2) formed on the handle plate (3) to protect the above components. The cap (19) is connected to the handle plate (3) and fastened with two rear cap fixing bolts (20) to complete the product as shown in FIG.

The magnetic sensor (10) penetrates the magnetic force from the N pole to the S pole. When the magnetic force flows through the magnetic sensor (10), the output goes to a high level, and when the magnetic force flows in the opposite direction, the output goes to a low level. That is, when the inner drum (14) rotates, magnetic force penetrates the magnetic sensor (10) and flows from the N pole to the S pole (output is at a high level). Since they intersect, a pulse signal is output.

Therefore, the manual pulse generator of the present invention
An outer drum (15) having an outer protrusion (5) and an inner groove (3) is installed while an inner drum (14) is coupled to a shaft (8) internally rotating by the handle (1). Substrate (16) in inner groove (13) of drum (15)
The upper magnetic sensor (10) is installed, and is configured so that the side surface of the inner drum (14) passes therethrough.

The operation of the manual pulse generator constructed as described above according to the present invention will be described with reference to FIGS.

As shown in FIG. 3 (B), the stopping method using the manual pulse generator according to the present invention is an inner drum (14) which is a plastic injection magnet magnetized with S and N poles. ) And the outer drum (15) are operated and stopped by the magnetic force of each other, so that there is no noise and no wear.

Therefore, when the handle (1) is manually rotated, the inner drum (1) connected to the internal rotation shaft (8) is rotated.
4) rotates, and when the handle (1) is placed at a position where the inner drum (14) is to stop at any point during rotation,
The inner drum (14) stops contrary to the N pole and the S pole magnetized outward and inward on the outer drum (15).
At this time, the inner drum (1
The magnetic force of the outer drum (4) and the outer drum (15) is attracted by the poles to generate a suction force, and an accurate stop position can be obtained by this force. Therefore, as shown in FIG. ) Detects the magnetic flow between the inner drum (14) and the outer drum (15) stopped by two magnetic sensors (10) on the substrate (16) as it rotates.
One rotation is converted into 100 corresponding A- and B-phase electrical signals per rotation in proportion to the rotation of the shaft (8) (see FIG. 4).
As shown in FIGS. 3 and 4, the outer drum (1) through which the inner drum (14) passes to obtain an electrical signal.
The magnetic sensor (10) in the inner groove (13) of 5) was used.

Further, even if the inner drum (14) and the outer drum (15), which are plastic injection magnets, are shifted and stopped, the position correction is accurately adjusted by the attraction and repulsion of the magnetic force. The inner groove (1) of the outer drum (15)
By installing two magnetic sensors (10) in 3), it is possible to reduce the number of components such as conventional photoplates, springs, pins and plates, so that the number of assembly steps and cost can be reduced, and As described above, the number of parts can be reduced, the thickness of the product can be reduced, and the restrictions on the use environment can be somewhat overcome.

FIG. 5 is an exploded perspective view showing a manual pulse generator according to a second embodiment of the present invention. The manual pulse generator of the present invention is used to manually move a numerically controlled machine tool, a robot, or the like. Is a manual pulse generator using a magnetic sensor capable of generating and moving pulses. This is due to the attraction of magnetic force when the unevenness (56 ') of the inner uneven magnetic drum (80) of the inner rotating shaft (57) rotates and stops at the unevenness (56) of the outer uneven drum (54) of the main body (53). The inner and outer concave and convex drums (80, 5
Since it stops at the position where the projections of 4) are aligned, the strength of the magnetism due to each of the projections and depressions (56 ') is transmitted to the magnetic sensors (60, 60'), respectively, and the electric power corresponding to the rotation speed and direction is obtained. Target pulse can be generated.

As shown in FIG. 6, a handle (5) with a handle which can be easily rotated manually by hand is provided.
1) is provided with a rear cap (6) via a fixed scale plate (52).
3) is provided integrally, and the handle (51) is engraved with a scale of 100 equal parts. An oil-less bearing for preventing vibration during rotation of the rotating shaft (57) of the inner uneven magnetic drum (80) is provided on a fixed scale plate (52) having one scale engraved at a predetermined position of the handle scale. (64: see FIG. 7) is pushed up and down through the main body (53), and the lower and upper inner sides of the outer uneven drum (54) of the many uneven portions (56) and the inner uneven magnetic drum (80) below the main body (53). Concavo-convex drum (58, 58 ')
Then, the magnet (59) between them is assembled and fixed at a predetermined position, and the substrate (61) and the rear cap (63) of each magnetic sensor (60, 60 ') are assembled and fixed.

The inner concave / convex magnetic drum (80) includes upper and lower inner concave / convex drums (58, 58 ') in which the S pole or N pole of the concave / convex (56') is divided equally into 100, and a magnet (59) therebetween. Are integrally assembled by assembling a shaft (57) for transmitting and receiving the rotation of the handle (51).
7) assembling the oilless bearing (64) up and down on the main body (53) connected to the fixed scale plate (52) at the upper part, and fixing the oilless bearing after fitting it into the assembling hole of the handle (51).

The handle (51) is connected to the internal rotating shaft (5).
7) a number of irregularities (5) consisting of an inner irregularity drum (58), a magnet (59) and another inner irregularity drum (58 ').
6 ′) Insert an oilless bearing (64) into the magnetic drum (80) and the main body (53) of the inner unevenness, and insert a large number of unevenness (5).
6) The outer concave / convex drum (54) is fixed, and the substrate (61) is fixed and installed under the outer concave / convex drum (54). Each magnetic sensor (60, 60 ′) installed on the substrate (61) is fixed to the outer concave / convex drum (54). 6), the rear cap (63) is fixedly installed behind the inner groove (55), and as shown in FIG. 6, a completed product is obtained.

That is, the circular substrate (6
1) When two magnetic sensors (60, 60 ') are installed on the upper surface and the inner concave / convex magnetic drum (80) rotates, the upper and lower inner concave / convex drums (58') use the magnetic sensor (60 '). , 60 ′) to detect the magnetic strength and convert it into an electric signal, as shown in FIG. 7, comes to the inner groove (55) of the outer uneven drum (54) and returns to the substrate (61).
The two magnetic sensors (60, 60 ') are each assembled above. In the above-mentioned inner concave / convex magnetic drum (80), the upper and lower inner concave / convex drums (58, 58 ') are exposed to the magnet (59) between the upper and lower inner concave / convex drums (58, 58'), so that the S poles are opposed to each other. Or, it is configured so as to have an N pole, and the flow of the magnetic field passes through the projections of the inner uneven drum (58) and the outer uneven drum (54) from the magnet (59) and the inner uneven drum (5
A magnetic field flows through the magnet (59) through 8 '). Therefore,
Such a magnetic field can maintain a constant rotation tension force (rotation torque) by the suction force and the repulsion force at the time of rotation of the inner uneven magnetic drum (80).

The magnetic sensor (6) on the substrate (61)
As shown in FIG. 8, N, 0 'and 60') are N through an uneven uneven drum (58 ') and an uneven uneven drum (54).
When the magnetic force passes through the S pole rather than the pole, the output of the protruding portion goes to a high level if the magnetic force passes through and goes to a low level if the magnetic force of the depressed portion flows in the opposite direction.
That is, when the inner concave / convex magnetic drum (80) rotates, magnetic force penetrates through the magnetic sensors (60, 60 ') in the outer concave / convex drum (54), and the projections of each concave / convex (56') are N-pole or S-pole. When the output is at a high level, a strong magnetism is detected as shown in FIG. 9 (A).
Since the magnetic force flows intersect (weak magnetism is detected as shown in (B)), the voltage output circuit (7
0, 70 '), and is output as a pulse signal having a phase difference of 90 °.

Therefore, the manual pulse generator according to the present invention is constructed such that an inner grooved magnetic drum (80) having a large number of irregularities (56 ') is connected to a shaft (57) internally rotating by the handle (51). Many irregularities (5) on which (55) are formed
6) The outer uneven drum (54) is installed, and the magnetic sensor (60, 60 ') on the substrate (61) is installed in the inner groove (55) of the outer uneven drum (54). ) So that the projections and depressions (56 ′) pass through.

The operation of the manual pulse generator constructed as described above according to the present invention will now be described with reference to FIGS.

As to the stopping method using the manual pulse generator of the present invention, as shown in FIG.
4) and the inner and outer concave / convex drums (58 ', 54) are always stopped at a position where the projections of the inner and outer concave and convex drums (58', 54) are aligned by the repulsive force and attractive force of the inner concave / convex magnetic drum (80). Therefore, when the handle (51) is manually rotated,
A number of irregularities (5) coupled to the internal rotation axis (57)
6 ′) passes through the magnetic sensor (60, 60 ′) in the inner groove (55) of the outer uneven drum (54) to which the inner uneven magnetic drum (80) is fixed, and the inner uneven magnetic drum (80) rotates. When the handle (51) is placed at a position where it is to be stopped anywhere, the outer uneven drum (54)
Then, the protrusion of the inner uneven magnetic drum (80) stops accurately at the position where the corresponding protrusion of the outer uneven drum (54) is aligned by the attraction and repulsion of the magnetic field.

Accordingly, the manual pulse generator of the present invention has no noise, no friction, no abrasion, etc. during manual rotation due to the repulsive force and suction force of the outer uneven drum (54) and the inner uneven magnetic drum (80) as described above. Thus, a constant rotation tension force (rotation torque) can be maintained.

On the other hand, the manual pulse generator of the present invention detects the amount of rotation and the direction of rotation by using a magnetic sensor (61) on the substrate (61) in the inner groove (55) of the outer concave / convex drum (54) as described above. As shown in FIG. 8, the inner uneven drum (58 ') is installed near the inner uneven drum (58'), and when the inner uneven magnetic drum (80) rotates, the uneven surface (56 ') of the inner uneven drum (58') is rotated. '), The magnetic strength is transmitted to the magnetic sensors (60, 60'), that is, as shown in FIG. 9, a large number of projections and depressions have different magnetic strengths. 70, 70 '), and output them as electrical pulses (see FIG. 10) corresponding to the rotation speed and direction.

Accordingly, the manual pulse generator according to the present invention is configured to have a precise position because the noise and wear are basically eliminated without friction and the stop position is determined by the strength of the magnetic field. Also, while a conventional manual pulse generator uses a photosensor and is composed of a slit, a light transmitting element and a light receiving element, it is a pulse generator that is simply composed of a magnetic sensor.

[0034]

As described above, according to the present invention, the magnetic force of the S pole and the N pole is magnetized on the inner drum and the outer drum without using the conventional spring, and the attractive force of the magnetic force is reduced. By using the repulsion force to stop at the correct position, friction noise and wear can be removed, and a soft feel can be obtained.Furthermore, a magnetic sensor is installed in the inner groove of the outer drum. Since the number of parts and the assembling time can be reduced, it is possible to provide a manual pulse generator that can reduce costs.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a manual pulse generator according to a first embodiment of the present invention.

FIG. 2 is a perspective view in which the manual pulse generator of the first embodiment is connected.

FIG. 3 is a main operation partial view for explaining the manual pulse generator of the first embodiment.

FIG. 4 is an electric circuit diagram for explaining the manual pulse generator of the first embodiment.

FIG. 5 is an exploded perspective view showing a manual pulse generator according to a second embodiment of the present invention.

FIG. 6 is a perspective view in which a manual pulse generator according to a second embodiment is connected.

FIG. 7 is a sectional view showing the manual pulse generator shown in FIG. 6;

FIG. 8 is a main operation partial view for explaining a manual pulse generator of a second embodiment.

FIG. 9 is a diagram showing the positions of the inner and outer concave and convex drums and the magnetic sensor when detecting magnetism.

FIG. 10 is an electric circuit diagram for explaining a manual pulse generator according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Handle 2, 2 'Assembly boss 3 Handle plate 4 Assembly groove 8 Axis 10 Magnetic sensor 13 Inner groove 14 Inner drum 15 Outer drum 16 Substrate 18 Terminal block 19 Rear cap 20 Rear cap fixing bolt 21 Handle 51 Handle 52 Fixed scale plate 53 Body 54 Outer uneven drum 55 Inner groove 56, 56 'Irregularity 57 Rotation axis 58, 58' Inner uneven drum 59 Magnet 60, 60 'Magnetic sensor

Claims (6)

[Claims] 1. A handle (1) on which a handle (21) is attached is engraved with a scale (1A) for 100 equal parts, and a handle plate (3) engraved with the scale (3A) and a rear cap (19). In the manual pulse generator provided with the inner drum (14) made of a plastic injection magnet, the shaft (8) internally rotated by the handle (1) is connected to the outer protrusion (5). An outer drum (15) provided with a side groove (13) is provided, and the outer drum (1) is provided.
A manual pulse generator, wherein a magnetic sensor (10) on a substrate (16) is installed in the inner groove (13) of (5). 2. The inner drum (14) according to claim 1, wherein the handle (1) is placed at a position where the inner drum (14) coupled to the rotating shaft (8) is to stop at any point during rotation. ) Stops in opposition to the north and south poles magnetized outward and inward on the outer drum (15). 3. The internal drum (1) according to claim 2, wherein
4) Even if the outer drum (15) is shifted and stopped,
A manual pulse generator characterized in that position correction is accurately adjusted by the repulsive force of magnetic force. 4. The handle (51) to which the handle is attached is engraved with a scale of 100 equal parts, and the handle (51) extends the fixed scale plate (52) so that the rear cap (63).
And a hand-operated pulse generator provided with a terminal block (62) of four terminals, wherein the handle (51) is provided on an inner rotating shaft (57) with an inner uneven drum (58), a magnet (59) and an inner uneven drum. An oil-less bearing (64) is inserted into the main body (53) and the inner uneven magnetic drum (80) of a large number of irregularities (56 ') composed of (58'). The substrate (61) is fixedly installed under the substrate (61), and the magnetic sensors (60, 60 ') installed on the substrate (61) are respectively coupled to the inner grooves (55) of the outer concave and convex drum (54). The manual pulse generator, wherein the rear cap (63) is fixedly installed behind the rear end. 5. The position according to claim 4, wherein the projecting portions of the inner and outer concave / convex drums (58 ', 54) are always aligned by the repulsive force and suction force of the outer concave / convex drum (54) and the inner concave / convex magnetic drum (80). A manual pulse generator characterized in that the pulse generator stops at a time. 6. The magnetic sensor according to claim 4, wherein when the inner concave / convex magnetic drum is rotated, the intensity of the magnetism is determined by the concave / convex portions of the inner concave / convex drum.
60 ') and output as electrical pulses corresponding to the rotation speed and direction through the voltage output circuit (70, 70').