JPS59205029A - Device capable of driving load forward and back ward - Google Patents

Abstract

PURPOSE:To enable the control of transmission of large torque through a small electric input and promote durability, by performing or stopping the transmission of motive power depending on the electromagnetic-coil-swung state of a lever holding a rotary wheel, an eccentric wheel and a gear coaxial with one another. CONSTITUTION:When an electromagnetic coil 8 is energized, a magnet 7 is repulsed to unlock a lever 3a so that a rotary wheel 4 whose shaft 4a is supported on a lever 3 is brought into pressure contact with a rotary wheel 5b secured on the rotary shaft 5a of an electric motor 5. Consequently, the rotary wheel 4, a gear 4b and an eccentric wheel 4c on the shaft 4a are turned together counterclockwise by the rotation of the motor 5 to drive a load 1 through an output gear 2. Because of the reaction of the load 1, the lever 3 receives torque in the same direction as the wheel 4 so that the contact pressure between the rotary wheels 4, 5b is increased depending on the load 1. When the coil 8 is de-energized, the magnet 7 is attracted at the time of the approach of the reciprocating lever 3a to a yoke 9 to separate the rotary wheels 4, 5b from each other to stop the transmission of motive power.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel configuration regarding an electromagnetic clamp. In detail (d.) Even if the original MR machine serving as the drive source rotates in only one direction, it is possible to freely drive the load in the forward and reverse directions, and if necessary, during the above-mentioned forward and reverse operation. Another feature is that the load can be stepped in accordance with the number of input electric pulses, or a drive change proportional to the number of input electric pulses can be obtained.

The purpose of the well-known electromagnetic crunch is to connect and disconnect two rotating systems by controlling energization.

Since it operates depending on the presence or absence of an electric signal, it is easier to control than other clutch devices.

Therefore, it has found a wide range of uses. However, there are some drawbacks as described below.

First, the required current is extremely large compared to the transmission torque, and therefore a large capacity power source is required. Second, it has the disadvantage of generating a loud impact noise during operation. Thirdly, since the torque is transmitted by frictional coupling of the clamp plates, there is a problem with friction, which limits the service life. Fourth, control of torque transmission (only d on/off, and since it involves a slinop, digital !li'l , there is a drawback that it is impossible to perform +]E6(+ without an integral error. Also, there is a drawback that it is accompanied by abrasion of the cranote board.

The device invented by the tree succeeded in completely eliminating the above-mentioned drawbacks, and controlled the transmission of large torque using extremely small pulsed electrical inputs. It is characterized by low noise generation, quiet operation, long service life because there are no friction parts, and the ability to control the transmission of the rotation angle or travel distance corresponding to the number of input electric pulses. Also, it has the advantage of being able to extract multiple outputs from a single driving rod.

Since it has the above characteristics, it can be used in place of the well-known electromagnetic crunch to achieve remarkable new and excellent effects. ) can be done. As described later in tPf, '1l
J. Technology that is effective when applied to motor vehicles, bicycles (wheelchairs) whose drive source is a small gasoline engine, reciprocating devices for copying machines' manuscript tables or illumination devices, drive sources for sewing machine needles, flyers, etc.) There is an effect that can be provided.

Next, details of the apparatus of the present invention having the above-mentioned features will be described with reference to embodiments.

FIG. 1 shows an embodiment of a mechanism constituting the basics of the device of the present invention. First, the explanation will be given with reference to FIG.

In Fig. 1(a), the support IIIlII2a provided on the main body
A first lever 3 and a second lever 3a are supported so as to be able to rotate independently. The gear 2 is also rotatably supported by the support shaft 2a. Gear 2 serves as an output gear, and is connected to load 1 via a rotation transmission system (not shown).
is being driven.

A support shaft 4a provided at the free end of the lever 3 rotatably supports an eccentric ring 4c, a gear 4b, and a non-eccentric rotary ring 4, which are made in one piece. A comb ring is crowned on the circular closed part of the rotating ring 4 and is brought into contact with the rotating ring 5b.

A yoke 9 is fixed to the main body, and an excitation coil 8 is attached to the yoke 9. A red sea bream throat 7 is fixed to the free end of the lever 3a, and the magnetic path of the magnet 7 is closed by the yoke 9, so that it is strongly sucked and locks the lever 3a.

When rotating by receiving power from the rotating wheel 4 or 5b, the load 1 is driven by the gear 4b and the eyes 2 meshing with the gear 4b. At this time, due to the counterclockwise rotation of the gear 4b, the lever 3 is moved due to the reaction of the load.
also receives torque in the same direction and applies pressure contact force between rotations 4 and 5b jj, jj corresponding to the load, which ensures reliable power transmission.

The rotating wheel 5b is fixed to the rotating shaft 5a of the electric motor 5, and rotates in the direction of the arrow. Rotation '11M4 as shown.
As can be understood from the relative position and rotational direction of the rotary wheel 5b, the rotary wheel 5b drives the rotary wheel 4 with a relatively large biting angle, so that the power transmission is reliable.

A swing ring 6 is applied to the lever 3 to repel the lever 3 in the counterclockwise direction, in the direction in which the rotating wheels 4 and 5b come into pressure contact with each other. Since a spring 6a is applied between the levers 3 and 3a, the lever 3a is lightly pressed against the eccentric wheel 4eK by applying a torque in the counterclockwise direction.

When the excitation coil 8 is energized, the resulting magnetic flux cancels out the flux (a) caused by the magnet 7, so the lock of the lever 3a is released and the rotating wheels 4 and 5b are pressed against each other. 4. Gear 4b and eccentric wheel 4C are counterclockwise d-
Rotates in one force direction. As described above, at this time, the pressing force between the rotating wheels 4 and 5b increases in response to the load, thereby ensuring reliable power transmission. The pressure force between rotating wheels 4 and 5b is
Since the elastic force of the spring 6 is not the only force, the reaction force of the drying load is also added, so the spring 6 only needs to be weak, and the excitation coil 8 is used to lock and hold the lever 3a.
This has the effect of requiring only a small input power.

At this time, the lever 3a is rotated by the rotation of the eccentric wheel 4C.
It moves back and forth from side to side. Also, by Western Army 2, 1't nr
r1 is! being driven.

Next, when the connection 'i4' between the 1 coil and 1 loop 8 is cut off, the reciprocating lever 3a approaches the open end of the conduit of the yoke 9. The tablets are mixed by adsorption.

Due to the rotation of the eccentric wheel 4C of the rotary wheel 4C, the lever 3 rotates in the force direction at time t1, and the power transmission is cut off between the rotary wheel 4 and the meat 11 shown at 5bua. The load also stops 1
] As can be seen from the operation of Lee, it has the characteristic that it does not generate mechanical noise during operation.

The following operation (1) is performed by controlling the energization of the excitation coil 8 to control the load 1.
Since it can be driven or stopped, it functions as an electromagnetic lottery ticket.

The suspension ring 6a may be even weaker than the spring 6, since it is sufficient that the lever 3a is in contact with the eccentric wheel 4C. Also, the spring 6ai-1 may be hung between the lever 3a and the main body.

Next, one node/cycle control will be explained.

Excitation (1yy) When one electric pulse is input to the coil 8, the lock of the lever 3a is released by 4M, so the rotating wheel 4 is pressed against the lever 5b and rotates once. During this time, After the lever 3a has been moved once, the lever 3a approaches the yoke 9 again, and the lever 3a is unlocked and locked via the locking point 7.Furthermore, by the rotation of the eccentric wheel 4C at a slight angle, the lever 3 is moved to the clock position. direction, the rotating wheels 4 and 5b are separated, and the power transmission is cut off.

In the above-mentioned single step, there is a slight difference each time.However, even if the step is repeated multiple times, the error in the step is not added. That is, there is an effect that no integration error occurs.

Next, in Fig. 1(b), the support shaft 2a common to Fig. 1(a) is
A lever 10.10a is rotatably supported at the lower end of the lever 10.10a. The gear 2 (dotted line) is also the same as in Figure (a). The device including the lever 10.10a is provided on the lower side of the device shown in FIG. It is something that

The support shaft 11a provided on the lever 10 has a rotating shaft made in one piece. ill (The circumference is covered with a rubber ring.) The rm 11L 11b and the eccentric wheel 11c are rotatably supported 1, and the support shaft 12a provided on the left extension of the lever 10 has a A d-1τ1 gear 12 is supported, which meshes with gear 2 and llb. levers 10 and 1
A spring 22a is connected between the lever 10a and the lever 10a, and a magnet 13 is fixed to the free end of the lever 10a. , a yoke 15 fixed to the main body, an excitation coil 14 (ii+coil 14) attached to it, 1゜'11j, which has exactly the same effect as the magnet 7, yoke 9, and excitation coil 8 in Figure (a). The rotating wheels 5b of the motive 5 are shown in dotted lines so as to be in the same relative position.

Energize the excitation coil 14 and lock the lever 10a)1
y [divided by the spring 22, the lever 10, (
Liij 7. Contact the ring 11c, knee 10a
both rotate in the counterclockwise direction, and the rotating ring 11 is pressed against the rotating ring 5b with a relatively large biting angle, and the gear 11
b, 12 to rotate gear 2 counterclockwise. Since the direction of this rotational force is opposite to that of the drive by the device shown in FIG. 3(a), the negative 3gi 1 is driven in the opposite direction.

At this time, the lever 10 receives clockwise torque due to the clockwise rotation of the gear 120, or the counterclockwise torque of the lever 100 is set to be large due to the driving of the biting angle by the rotating wheel 5b described above 10a. But yoke 1
5, the lever 10 moves to the left due to the rotation of the rotary wheel 11, the eccentric wheel 1, and lc by a slight angle due to the suction and locking of the magnet 13, and the rotation of the rotary wheel 11.
and 5b are separated, so the load 1 stops. The other effects are exactly the same as in the case of (a).

The same objective is achieved if the rotating wheels 5b, 4.11 are constructed as gears. In this case, the gear 4b and the gear 4 and the gear 11b and the gear 11 can be each made into one and the same gear.

(1)) When the device shown in the figure is activated and the gear 2 is rotated counterclockwise, the gear 4b, the rotating wheel 4, and the eccentric wheel 4C all rotate in the poetry direction, and the lever 3 reciprocates left and right. It wastes useless energy. Also, when lever 3 is biased toward EJ, rotation %115b and 11 rotating in the same direction will temporarily come into contact with each other, and at this time, wear and
rugy loss occurs.

In order to avoid the above drawbacks, the following four features are added to the device of the present invention.

(a) With A'z"y/-+ on IXt, 1t (fl ; $ (shown in the figure)) provided on lever 3 has a support
A mouth 4a is supported, and a rotary ring 4 and a gear 4b, which are integrated into one body, are rotated by a support shaft 4a. l Support jli: It 4 The outer ring of the one-way clutch 4d (pole clutch) with the inner ring fixed to a is fixed to the eccentric ring 4C; when the rotating ring 4 rotates in the counterclockwise direction, the eccentric When t11·4i4c is driven and rotated clockwise, that is, when driven by the device shown in FIG. ;II□ (b) Eccentric wheel 11c, one-way clutch 4d, and support shaft 1 in the figure
1a, the rotating wheel 11, and the gear 11b have exactly the same configuration as in the case of figure (a), so by the device of figure (a),
Even if the gears 12 and llb are driven, the lever 10 is stopped.
It's happening. The aforementioned drawbacks are therefore eliminated.

When the excitation coil 8 is de-energized while the device shown in FIG. 1(a) is being driven, the lever 3a is attracted to the yoke 9, and then the lever 3 is moved to the left by the eccentric wheel 4C. ,
As the rotary wheel 11.5b driven at the biting angle is moved apart, the folding force increases.

Therefore, the magnet 7 also becomes large, and the excitation current (1 volt) also becomes large.

A means to avoid the above points is shown in FIG.

In FIG. 2, only the lower end of the lever 3a is shown. An excitation coil 17 is attached to a yoke 16 fixed to the main body, and a mild steel lever 1 is attached to a support shaft 16a provided on the yoke 16.
8 is rotatably supported and resiliently repelled in the direction of the arrow (counterclockwise) by a spring (not shown). Symbol 19 is
This is a restraint bin for the lever 18 provided on the main body.

When the excitation coil 17 is energized, the lever 18 moves the yoke 1
6 and from the contact bottle 3b provided on the lever 3a,
Since the locking part 18a of the lever 18 is separated, the /: -
The lock in 3a is released. Therefore, the device in figure (a) operates.

Next, when the excitation 1h coil 17 is de-energized, the lever 18 is)i11. ''' Rotate in the forward direction and lock the lever 3a, which moves to the left, as shown. The rotation of the eccentric wheel 4C causes the lever 3 to move to the left, and due to this reaction, the lever 3a receives a force to the right, but the lock g1518a
Since the abutment pin 3b has a force corresponding to this, the above-mentioned drawbacks are eliminated 4. (1)) Exactly the same device can be adopted as the electromagnetic locking device of the device shown in the figure.

According to the device of the present invention, the load 1 can be driven in the forward and reverse directions by applying three electric currents to any one of the 11 and 14 electric motors. Drive αj! This is particularly effective when applied to a small ganolin engine that cannot be reversed, such as the electric motor 5.

When the excitation coil 8.14 is energized once, the load 1 is 1.
Step by step Stesov. When n pulses are applied,
Load 1 is characterized by n steps.

Therefore, it is also possible to numerically control the load.

In this case, it is necessary that the integral error, that is, the error for each step, not be calculated. In order to ensure this point, a third factor device is adopted. 1. Figure 3 shows a part of the lever 3.3a and a part of the eccentric wheel 4c11-direction crunch 4d shown in Figure 1(a). This is an enlarged view.

When the eccentric wheel 4C rotates counterclockwise and moves the lever 3 to the left to cut off power transmission, the planar portion 20 of the eccentric wheel 4C is configured to abut against the lever 3a. By such means, when the operation of the device shown in FIG. 1(a) is stopped, the relative positions of the eccentric wheel 4C and the rotary wheel 4 are kept constant, and even if they are accidentally shifted, the relative positions shown in FIG. When the device (b) is driven, the rotating wheel 4 and the uneven flood wheel 4C are
The directional clutch 4d converts the relationship into a relationship in which they can freely rotate with each other, so that the levers 3a are in the position shown in the figure, and the flat part 2
It is automatically regulated to contact zero. Therefore, it has the effect of eliminating integration errors. Eccentricity '1i in Figure 1(b)
The same effect ρ can be obtained by providing the same flat portion in fillc. In the case described above, the protrusion of the mild steel disk that rotates synchronously with gear 2 is set at tJ3. so that when gear 2 rotates by one step, it must stop at a certain pinch. It is effective to add a suction locking device using iM stones. When the levers 3a and iUa are unlocked at the same time due to vibration or other reasons, the rotating ring 4.11 is simultaneously pressed against the rotating ring 5b at a biting angle, so that the gear 2 receives torque in both forward and reverse directions. The added 1, therefore, the negative ('+ii 1) does not move, but it causes the inconvenience of not being able to return to the cast iron state.

A means for eliminating this disadvantage is shown in FIG.

In FIG. 4, the lever 21 is in a position where it comes into contact with the lower end of the lever 3, IO at a predetermined distance. Lever 21,
It is rotatably supported by a support shaft 21a provided on the main body.

When the lever 3 is unlocked, the lever 3 moves to the right in the center and the device shown in FIG. 1(a) is activated. However, when levers 3 and 10 are unlocked at the same time, spring 6.
For example, the lever 10 is moved in the right arrow direction by the slider with a strong force of any one of 22, and one rotation of the rotary wheel 11 locks the lever 10a and the locking bar 3a, and the above-mentioned inconvenience is eliminated. It is something that

As explained above, according to the apparatus of the present invention, the object stated at the beginning is achieved and the effect is remarkable.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the device of the present invention, FIG. 2 is an explanatory diagram of another embodiment of the electromagnetic locking device, FIG. 3 is an explanatory diagram of means for removing integral error, and FIG. 4 is an explanatory diagram of another embodiment of the electromagnetic locking device. Explanatory diagrams of means for preventing accidents caused by vibration, etc. are shown. 1.Load, 2.2b, 11b, i2...gear,
4, 11.5b rotating wheel, 4C1llc-eccentric wheel,
4d, 11d L direction crunch, 3.3a, 1 Hokawa a, 2L 18・Lever, 9.15.16・
・Yoke, 8.14.17 Excitation coil, 2 a
-, 4” z 11 az5a, 16a, 21 a・
- Support shaft, 5...*, motive, 7.13 Madai-no)..., 6.6a, 22.22a spring, 3b abutting pin, 20... flat part. Patent Applicant Figure 2 Figure 3 Sub-Figure 4

Claims (1)

[Claims] first and second levers and a first shaft each independently rotatably supported by a support shaft provided on the main body;
a second 1ψ1 wheel that is rotatably supported by a support shaft at the free end of the first lever and meshes with the first hour wheel; and a second 1ψ1 wheel that is coaxial with the gear. The first rotating shaft that rotates synchronously at , the first coaxial eccentric wheel driven by the rotating wheel through the When pressed, the source is in the position □ that drives the first rotating wheel with the biting angle! A second rotating wheel driven by a suketsuki, a first resilient part that resiliently presses the second lever against the cam surface of the first 11i core wheel, and a second rotating wheel that rotates the first lever. a second resilient member that moves and resiliently presses the first rotating shaft against a second rotating ring; and a first eccentric wheel that moves by a resilient force generated by the second resilient member. a first electromagnetic locking device that electromagnetically locks the free end of the second lever that is suppressed and moved via the first electromagnetic locking device, and holds the first and second rotating wheels apart from each other; A third and a fourth lever are rotatably supported on a support shaft provided in the first lever, and are provided on the first lever so as to overlap the second lever, respectively, and a free end of the third lever. A third gear is rotatably supported by a support shaft on the part, and meshes with each of the third gear and the first gear, and a third gear is rotatably supported by the support shaft on the free end of the third lever. a supported fourth gear; and a third gear coaxially and synchronously rotating with the third gear.
A rotating wheel, a coaxial second eccentric wheel driven by the rotating wheel via a direction flanch, and a third lever rotate, and when the third rotating wheel is brought into pressure contact, the biting angle is determined. And the third
a second rotating wheel positioned to drive one rotating wheel; and a fourth rotating wheel.
The third lever is pressed against the second eccentric wheel.
a fourth resilient member that resiliently repels the third rotating ring so as to press the third rotating ring against the second rotating ring by rotating the third lever; The free end of the moving fourth lever is locked via the second wheel, which is moved by the repulsive force of the part, and the third lever is locked. A second electromagnetic locking device that holds the second rotating wheel apart, and a first electromagnetic chain ω1: controlling the excitation of the device and the energization of the coil;
When the locking mechanism is cleared and the load is driven in the forward direction by the second rotating wheel, - the second eccentric wheel is stopped and held by the one-way clutch, and the second electromagnetic locking By controlling the energization of the excitation coil of the device, when the locking action is removed and the load is driven in the opposite direction by the second rotating wheel, the first eccentric wheel is stopped by the one-way cranometer. When the mechanism that is held as and separates the first or third rotating wheel from the second rotating wheel through rotation of the first or second eccentric wheel at a slight angle to cut off power transmission. A device 1 capable of driving a load in a locking direction, characterized by: