JP2564023Y2 - Drive motor braking mechanism - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake mechanism for a drive motor, and more particularly to a brake mechanism that can remotely operate a drive motor when a power failure occurs or an electromagnetic magnet fails.

[0002]

2. Description of the Related Art Recently, so-called home elevators have been often installed in small-scale buildings such as houses and dining rooms.

[0003] In this type of home elevator, a motor is often used as a drive source. In such a case, a braking mechanism composed of an electromagnetic magnet and a clutch is provided in the drive motor, and when the motor is not operated, the electromagnetic motor is driven. In general, the rotation of the motor shaft is stopped by stopping the energization of the motor, and the rotation of the motor shaft is prevented from rotating for some reason to ensure safety.

[0004]

However, in the conventional drive motor braking mechanism, when a power failure occurs during the operation of the drive motor and the energization of the electromagnetic magnet is stopped, or when the electromagnetic magnet fails, the motor rotating shaft is rotated. As a result of the automatic braking, for example, if a power failure or a failure occurs while the home elevator is moving up and down, the occupant may be trapped.

[0005] Usually, when an abnormality such as described above occurs in an elevator of a large-scale structure, a measure is taken such that an operator enters a machine facility room and manually operates a screw mechanism to release braking. However, in the case of a home elevator, equipment is installed in a relatively small space such as a basement in a home, so it is very dangerous for a worker to enter a machine equipment room and work. But not
It takes time for the clutch to be completely disengaged and cannot be responded to when urgency is required.

[0006] In view of the above problems, the present invention provides a drive that can quickly and surely release and rotate the rotating shaft by remote control without entering a narrow space in the event of a power failure or failure. It is an object to provide a motor braking mechanism.

[0007]

SUMMARY OF THE INVENTION Accordingly, a drive motor braking mechanism according to the present invention is described as follows. "One of the clutch plates is fixed to the rotation shaft of the drive motor, and the other of the clutch plates is axially moved to the base of the drive motor. The two clutch plates are brought into close contact with each other and the two clutch plates are brought into close contact with each other to brake the rotating shaft, while the electromagnetic magnet is energized to attract the other of the clutch plates in the axial direction and disengage from one to rotate the rotating shaft. In the braking mechanism, an engaging piece is fixed to the rotating shaft, and an operating member that can be engaged with and disengaged from the engaging piece is supported on the base so as to be movable in the axial direction. Is configured to cooperate with the other of the clutch plates to restrict and release the axial movement of the operating member by rotating the stopper piece, and to move the operating member in the direction of the engaging piece by rotating the stopper member. Above clutch The other was detached from one were to be rotatable operating the rotary shaft by the engaging piece and engaged with the operating member "that the gist of the.

Here, the stopper piece is locked to the operating member to restrict the movement of the operating member, while any structure may be used as long as the locking can be released to release the restriction. An L-shaped guide elongated hole is formed in the operation member, and a stopper piece is slidably inserted into the long hole to regulate and release the operation member, or fixed to the operation member, and the stopper piece is rotated by rotating the operation member. It is preferable to control and release the operation member by rotating it. Also, the disengagement of the clutch plate and the engagement of the operation member may be performed manually after releasing the regulation of the movement of the operation member or by a cam mechanism. From the point of view, it is preferable to use the biasing force of the spring member.

[0009]

When the rotary shaft is braked due to a power failure or failure, the stopper piece is rotated to release the movement restriction of the operating member, and the operating member is moved in the axial direction to engage with the engaging piece of the rotary shaft. In addition, when the other of the clutch plates is disengaged from one in cooperation with the operation of the operating member, the braking of the rotating shaft is released, and the rotating shaft of the drive motor is rotated by the operation of the operating member. Release and rotation of the rotating shaft can be performed by a simple operation, so that remote operation can be relatively easily realized.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to specific examples shown in the drawings. 1 to 7 show a braking mechanism of a driving motor according to an embodiment of the present invention. 1 to 5, a worm gear (not shown) is attached to a rotating shaft 10 of the drive motor 1 so that a driving force is transmitted from the worm gear to a driven system. Drive motor 1 due to excessive load from the system
The rotation shaft 10 is prevented from being rotated, thereby ensuring safety. Of course, the output system of the drive motor 1 may be another speed-up or deceleration transmission mechanism.

A cylindrical case 11 is integrally formed on the rear end side of the drive motor 1, and a rear end of the rotating shaft 10 is protruded in the case 11, and a braking mechanism 2 is provided inside the case 11. Have been. In this braking mechanism 2, the drive motor 1
A support bolt 20 is planted on the rear end wall 12 at every 120 ° in the circumferential direction, and a fixed disk (base) 21 is attached to a front end portion of the support bolt 20 by a gap adjusting nut. A tube piece 22 is mounted between the plate 21 and the motor rear end surface 12, and two sliding plates (one clutch plate) 23, 24 are supported on the tube 22 so as to be movable in the axial direction. The sliding plate 23 is urged by the spring member 25 toward the rear end wall 12.

The outer peripheral surface of the rear end of the rotary shaft 10 and the inner surface of the mounting hole of the engagement piece 26 are serrated, and the engagement piece 26 is fitted to the outer peripheral surface of the rear end of the rotary shaft 10. And the ring washer prevents it from falling off. As shown in FIG. 5, protrusions 27 are formed on the outer peripheral surface of the engagement piece 26 at every 90 °, and lining plates (the other clutch plates) 28 and 29 are fitted on the outer peripheral surface of the engagement piece 26. One of the sliding plates 23, 24 is interposed between the lining plates 28, 29 so that the sliding plates 23, 24 and the lining plates 28, 29 can be in close contact with each other. It is configured.

The fixed disk 21 has the sliding plate 2
A plurality of electromagnetic magnets 210 for attracting the magnet 3 are fixed, and a gap between the electromagnetic magnet 210 and the sliding plate 23 is set by the gap adjusting nut. A circular hole is formed in the center of the fixed disk 21, and a substantially cylindrical operating member 211 is slidably inserted in the axial direction in the circular hole. This operation member 211
A plurality of positioning steps are formed on the outer peripheral surface of the member. A spring member 212 for urging the operation member 211 in the direction of the engagement piece 26 is interposed between the operation member 211 and the fixed disk 21. The protrusion 2 of the engagement piece 26 is provided on the peripheral wall of the operation member 211.
A notch that can engage with 7 is formed every 90 °.

Further, the sliding plate 23 has a circumferential direction 12.
The lower end of the bolt (rod) 213 is screwed at every 0 °,
The upper end of the bolt 213 is slidably inserted through the small hole of the fixed disk 21 and the cooperation plate 214, and the bolt head 215
Is provided so as to be engageable with the linking plate 214, and a spring member 216 is contracted between the fixed disk 21 and the linking plate 214. An insertion hole is formed at the center of the linking plate 216, and the operation member 211 is slidably inserted into the insertion hole, and a peripheral wall of the operation member 211 is formed in a circumferential direction as shown in FIG. A substantially L-shaped guide elongated hole 217 extending in the axial direction is formed to face each other, and a stopper piece 218 is inserted into each of the guide elongated holes 217 so as to be movable.

As described above, while the operation member 211 and the cooperation plate 214 are mutually linked, the rotation of the stopper piece 218 restricts the movement of the operation member 211 in the axial direction, or releases the restriction. Operating member 21
1 in the direction of the engagement piece 26, the sliding plates 23, 2
4 is detached from the lining plates 28 and 29 and the operating member 2
The rotation shaft 11 can be operated by the rotation shaft 11. The spring force of each of the spring members 25, 212, and 216 is appropriately set according to the purpose.

In FIG. 6, reference numeral 3 denotes a stopper piece 21.
A manual jig for rotating the rotary shaft 10 by rotating the rotary shaft 10 by rotating the rotary shaft 8 by manual remote operation.
Is composed of a rod 30 having a predetermined length and a gripper 31 for gripping the stopper piece 218. A hole into which a rotation operation bar is inserted is formed at the distal end of the rod 30, and a distal end of the gripper 31 is formed at the distal end of the gripper 31. A notch is formed in which both ends of the stopper piece 218 are sandwiched. The manual jig 3 may be always engaged with the stopper piece 218, or may have a structure in which the center of the stopper piece 218 is gripped instead of the both ends.

Further, in FIG. 7, reference numeral 4 denotes an electric motor jig for forcibly rotating the rotating shaft 10, and the electric motor jig 4 is associated with a drive shaft of a portable electric motor (not shown). A pipe 41 for transmitting the driving force to the operating member 211. The pipe 41 is formed to have a size to be fitted into the distal end of the operating member 211, and has a stopper piece at its distal end. A notch into which the 218 is inserted is formed. The jigs 3 and 4 described above can quickly release the braking of the drive motor 1 by remote control and easily and surely rotate the rotary shaft 10 when the equipment of the home elevator is installed in a basement or the like. This is used for making the jig, and of course, a jig having another structure may be used.

Next, the function and effect will be described.

Before the drive motor 1 is driven, the stopper piece 218 is locked to the circumferentially extending portion of the guide elongated hole 217, whereby the movement of the operation member 211 in the engagement direction is restricted, Also, the link plate 214 is a stopper piece 218.
The bolt 213 is slidable with respect to the fixed disk 21 and the cooperation plate 214 by being positioned with respect to the operation member 211 by the spring force of the spring member 216. Also, no current is supplied to the electromagnetic magnet 210, and the sliding plate 23,
The lining plate 2 is urged by a spring member 25.
The rotating shaft 10 is braked by being firmly in contact with each other at 8, 29.

From such a state, the electromagnetic magnet 210
When the current is supplied to the sliding plate 23, the sliding plate 23 is sucked against the urging force of the spring member 25, and the sliding plates 23 and 24 are
29, and the rotating shaft 10 becomes rotatable.
When the drive motor 1 is energized, the motor 1 can be operated.

On the other hand, if a power failure occurs while the drive motor 1 is operating, or if the electromagnetic magnet 210 breaks down, the sliding plates 23 and 24 come into close contact with the lining plates 28 and 29 and the rotary shaft 10 is braked. In this case, as shown in FIG. 6, the manual jig 3 is used to rotate the stopper piece 218 from a portion extending in the circumferential direction of the guide elongated hole 217 to a portion extending in the axial direction. Then, the axial movement restriction of the operation member 211 is released, and the operation member 211
By the urging force of No. 2, it is moved in the engaging direction, and engages with the engaging piece 26. At the same time, the regulation of the cooperation plate 214 is also released, and the cooperation plate 214 is moved by the urging force of the spring member 216 to abut the bolt head 215 to lift the sliding plate 23,
The sliding plates 23 and 24 are separated from the lining plates 28 and 29, and the braking of the rotating shaft 10 is forcibly released. Thereafter, when the operation member 211 is rotated by rotating the manual jig 3, the rotation shaft 10 of the drive motor 1 can be forcibly rotated.

In addition, the braking of the rotating shaft 10 at the time of abnormality can be released by such a simple structure. As a result, the manufacturing cost does not increase so much, and a very large effect is obtained in practicality.

Instead of the manual jig 3, an electric motor jig 4 shown in FIG. 7 is connected to the operation member 211, and a drive shaft of an electric motor or the like is connected to the jig 4 and via the jig 4. After the restriction is released by rotating the stopper piece 218 to
By rotating the rotating shaft 11, the rotating shaft 10 of the driving motor 1 can be forcibly rotated.

FIGS. 8 and 9 show a drive motor braking mechanism according to a second embodiment of the present invention. In the drawings, the same reference numerals as those in FIGS. 1 to 7 indicate the same or corresponding parts. However, in this embodiment, the operating member 2 of the first embodiment is used.
Unlike the mechanism for regulating and releasing the movement of the operation member 11, a stopper piece 218 is inserted in the operation member 211 in the radial direction, and both ends protrude from the operation member 211 and are fixed.
The stopper piece 2 is provided on the inner peripheral edge of the insertion hole 222 of the cooperation plate 214.
A notch 221 through which the two-sided projections 220 can penetrate is formed, and the operating member 211 is moved in the direction of the engagement piece 26 when the notch 221 and the both-sided projections 220 are aligned. A ring 219 for positioning the movement in the direction of the engagement piece 26 is externally fitted to 211. It is not necessary to form a positioning step in the operation member 211 of the present embodiment as in the first embodiment.

Although this embodiment has the same operation and effect as the above embodiment, the detailed explanation is omitted because it can be easily understood from the structure of the braking mechanism.

[0026]

As described above, according to the braking mechanism of the drive motor according to the present invention, the drive is configured such that the clutch plate is disengaged or brought into close contact with the electromagnetic magnet by energizing or stopping the electromagnetic magnet so that the rotating shaft can be rotated or braked. In the motor braking mechanism, an engaging piece is fixed to the rotating shaft, and an operating member that can be engaged with the engaging piece is supported on the base of the motor so as to be movable in the axial direction,
The operation member is cooperated with the other of the clutch plates, and the movement of the operation member in the axial direction is restricted or released by the rotation operation of the stopper piece, and the operation member is moved in the direction of the engagement piece. The other side of the clutch plate is disengaged from one side, and the rotating shaft can be rotated by the operating member engaged with the engaging piece, so that when the power failure or failure occurs, the rotating shaft can be quickly and quickly braked by remote control. There is an effect that the rotation shaft can be rotated by reliably releasing the rotation shaft.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a drive motor braking mechanism according to an embodiment of the present invention. FIG. 2 is a front view showing a link plate and a stopper piece in the braking mechanism. FIG. 3 is a sectional view showing an operation member of the braking mechanism.
FIG. 4 is a front view showing an operation member of the braking mechanism. FIG. 5 is a perspective view showing an engagement piece in the braking mechanism. FIG. 6 is a fragmentary sectional view showing a jig for releasing braking of the rotating shaft in the braking mechanism. FIG. 7 is a fragmentary sectional view showing a jig for forcibly rotating a rotating shaft in the braking mechanism. FIG. 8 is a sectional view showing a main part of a drive motor braking mechanism according to a second embodiment of the present invention. FIG. 9 is a front view showing a link plate in the braking mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Drive motor 10 Rotating shaft 2 Braking mechanism 21 Fixed disk 23 Sliding plate 24 Sliding plate 26 Engagement piece 28 Lining plate 29 Lining plate 210 Electromagnetic magnet 211 Operating member 212 Spring member 213 Rod 214 Cooperating plate 216 Spring member 217 Guide Slot 218 Stopper piece 220 Projection 221 Notch

Claims (3)

(57) [Scope of request for utility model registration] 1. A one-way driving motor of the clutch plate rotating shaft
To provided other towards the clutch plate is provided so as to be movable in the axial direction on the basis of the drive motor, while the two clutch plates are closely with the rotating shaft is braked, the electromagnetic the magnet DOO towards the other of the clutch plates are aspirated with detached hand or found in the axial direction by energizing, Oite braking Organization of the rotating shaft so as to be rotatable, the said rotation shaft 10 engagement piece 26 Is fixed, and the base 2
An operating member 211 that can be disengaged from the engaging piece 26
Are supported so as to be movable in the axial direction, and the operating member 211 is cooperated with the other of the clutch plates 23, and the operating member 21 is
1 is provided with a stopper piece 218 for restricting and releasing the axial movement of the operation member 211 by the rotation operation thereof, and the clutch 1 is provided by the movement of the operation member 211 in the direction of the engagement piece 26. A braking mechanism for a drive motor, characterized in that the other one of the plates (23, 24) is disengaged from the other (28, 29), and the rotating shaft (10) can be rotated by the operating member (21) engaged with the engaging piece (26). . 2. A rod 2 is provided on the other side 23 of the clutch plate.
The rod 213 is slidably inserted into and supported by the base 21, and the other end of the rod 213 is locked by the cooperation plate 214.
11 is inserted, a spring member 216 for urging the cooperative plate 214 in the clutch plate releasing direction is interposed between the cooperative plate 214 and the base 21, and an operation is performed between the operation member 211 and the base 21. Member 21
The operating member 211 is formed with an L-shaped guide hole 217 extending in the rotation direction and the axial direction.
The stopper piece 218 is slidably inserted into the guide 7, and when the stopper piece 218 is in the rotation direction portion of the guide elongated hole 217, the axial movement of the cooperation plate 214 with respect to the operation member 211 is restricted. In addition, while the movement of the operation member 211 in the engagement direction is regulated, the stopper piece 218 is rotated to
7, the restriction of the axial movement of the cooperation plate 214 is released, and the other of the clutch plates 23, 24
Is moved in the disengagement direction by the urging force of the spring member 213, the movement restriction of the operation member 211 in the engaging direction is released, and the urging force of the spring member 212 causes the engagement piece 26 to move.
The braking mechanism for a drive motor according to claim 1, wherein the braking mechanism is engaged with the driving motor. 3. A rod 2 is provided on the other side 23 of the clutch plate.
The rod 213 is slidably inserted into and supported by the base 21, and the other end thereof is locked by a link plate 214.
11 is inserted, a spring member 216 for urging the cooperative plate 214 in the clutch plate releasing direction is interposed between the cooperative plate 214 and the base 21, and an operation is performed between the operation member 211 and the base 21. Member 21
A spring member 212 for urging the operating member 211 in the engagement direction is provided, the stopper piece 218 is inserted in the operating member 211 in the radial direction, and both end portions 220 are protruded. A notch 221 through which both end protrusions 220 of the piece 218 can be inserted is formed, and when the both end protrusions 220 of the stopper piece 218 are displaced from the notch 221 of the cooperation plate 214, the operation member 211 and the cooperation plate 214 While the movement in the axial direction is restricted, the operation member 211 is rotated to stop the stopper piece 218.
When the projection 220 at both ends coincides with the notch 221 of the cooperating plate 214, the regulation of the axial movement of the cooperating plate 214 is released, and the other one of the clutch plates 23, 24 becomes the spring member 21.
The operation member 211 is moved in the disengagement direction by the urging force of the operation member 3 and the movement restriction of the operation member 211 in the engagement direction is released.
2. A braking mechanism for a drive motor according to claim 1, wherein said urging force engages with said engaging piece.