JPH054792U - Drive motor braking mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] A braking mechanism for a drive motor in which a clutch plate is disengaged / closed by energizing / de-energizing an electromagnetic magnet to rotate / rotate a rotating shaft. When the magnet fails, the braking of the rotating shaft can be released quickly and reliably by remote control. [Structure] An engaging piece is fixed to a rotary shaft, an operating member capable of engaging with and disengaging from the engaging piece is axially movably supported on the base of a drive motor, and the operating member cooperates with the other of the clutch plates. A stopper piece for restricting the movement of the operating member in the axial direction and releasing the movement is provided. The movement restriction of the operating member is released by the rotation operation of the stopper piece, the operating member is moved in the direction of the engaging piece to engage the engaging piece, and in cooperation with this, the other side of the clutch plate is disengaged from one side, The rotary shaft is rotated by the operating member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a braking mechanism for a drive motor, particularly when a power failure occurs or when an electromagnetic magnet is used. Braking that allows the drive motor to be operated remotely in the event of a vehicle failure Regarding the mechanism.

[0002]

[Prior art]

  Recently, so-called home elevators have been used for small buildings such as houses and restaurants. It has been installed more often.

[0003]   In this type of home elevator, it is possible to use a motor as a drive source. In many cases, it drives a braking mechanism composed of an electromagnetic magnet and a clutch. Installed on the motor to control the rotating shaft by stopping the power supply to the electromagnetic magnet when the motor is not operating. To prevent the motor rotating shaft from rotating for any reason, ensuring safety. Is common.

[0004]

[Problems to be solved by the device]

  However, in the conventional drive motor braking mechanism, a power failure occurs when the drive motor operates. Power supply to the electromagnetic magnet is stopped, or the electromagnetic magnet fails, As a result of the motor's rotating shaft being automatically braked, for example during home elevator lifting and lowering. Occurrence of electric power or failure could trap the occupant.

[0005]   Normally, when the above-mentioned abnormality occurs in the elevator of a large-scale structure , The worker enters the machine equipment room and manually operates the screw mechanism to release the braking, etc. However, in the case of a home elevator, the equipment machinery is in the basement of the home. Since it is installed in a relatively narrow space such as Not only is it very dangerous to work on the track, but the clutch is completely disengaged. It takes time to be provided, and it cannot be dealt with when it is urgent.

[0006]   In consideration of such a problem, this invention enters a narrow space in the event of a power failure or failure. Without rotating, the braking of the rotating shaft can be quickly and reliably released and rotated. An object of the present invention is to provide a braking mechanism for a drive motor that is capable of doing so.

[0007]

[Means for Solving the Problems]

  Therefore, the braking mechanism of the drive motor according to the present invention is   "One of the clutch plates is fixed to the rotation shaft of the drive motor and the other of the clutch plates is driven. The motor is mounted on the base of the motor so that it can move in the axial direction. While braking the rotating shaft, energizing the electromagnetic magnet causes the other side of the clutch plate to Is sucked in the axial direction and separated from one side so that the rotary shaft can be rotated. In the braking mechanism,   An engaging piece is fixed to the rotating shaft, and the base portion is operable to engage with and disengage from the engaging piece. The operating member is movably supported in the axial direction, and the operating member cooperates with the other of the clutch plates. However, the movement of the operating member in the axial direction is restricted by rotating the stopper piece. Configured to release   By moving the operating member in the direction of the engaging piece, the other side of the clutch plate The rotary shaft by the operating member engaged with the engaging piece. I made it possible to make it. "

[0008]   Here, the stopper piece is locked to the operating member to regulate the movement of the operating member, Any structure may be used as long as it can be unlocked and the regulation can be released. As shown, an L-shaped guide long hole is formed on the operation member, and the stopper piece can slide on it. The operation member to restrict and release it, or fix it to the operation member. It is preferable to rotate the stopper piece to rotate and stop and release the operating member. Good Also, the disengagement of the clutch plate and the engagement of the operating member deregulate the movement of the operating member. Then, this may be done manually or by a cam mechanism. From the viewpoint of ease of construction and operation, it is preferable to use the biasing force of the spring member.

[0009]

[Action]

  If the rotating shaft is braked due to a power failure or failure, the stopper piece is rotated to operate. Release the movement restriction of the operating member and move the operating member in the axial direction to engage the engaging piece of the rotary shaft. The other side of the clutch plate is disengaged from one side in cooperation with the operation of the operating member. When this is done, the braking of the rotating shaft is released, and the drive mode is operated by operating the operating member. The rotary shaft of the motor is rotated, thus releasing the braking and rotating the rotary shaft is a simple operation. As a result, remote operation can be realized relatively easily.

[0010]

【Example】

  Hereinafter, embodiments of the present invention will be described in detail based on specific examples shown in the drawings. No Figure 1 FIG. 7 shows a driving motor braking mechanism according to an embodiment of the present invention. 1 to 5 At this time, a worm gear (not shown) is attached to the rotary shaft 10 of the drive motor 1. And the driving force is transmitted from the worm gear to the driven system, This causes the rotating shaft 10 of the drive motor 1 to rotate due to an excessive load from the driven system. The security is guaranteed by being prevented. Of course, the output system of the drive motor 1 is It may be a speed change mechanism for acceleration or deceleration.

[0011]   A cylindrical case 11 is integrally formed on the rear end side of the drive motor 1, and A rear end portion of the rotary shaft 10 is projectingly provided in the base 11, and the braking mechanism 2 is internally provided. Has been. In this braking mechanism 2, a support bolt is attached to the rear end wall 12 of the drive motor 1. 20 are planted at every 120 ° in the circumferential direction, and a fixed disk is provided at the tip of the support bolt 20. The (base) 21 is attached by a gap adjusting nut, and the fixed disk 21 and the A tube piece 22 is attached between the rear end surface 12 of the rotor and the rear end surface 12, and two sliding plates ( One clutch plate) 23, 24 is movably supported in the axial direction, and the sliding plate 23 The spring member 25 biases the rear end wall 12 side.

[0012]   The outer peripheral surface of the rear end of the rotary shaft 10 and the inner surface of the mounting hole of the engaging piece 26 are provided with serrations. And the engaging piece 26 is fitted on the outer peripheral surface of the rear end of the rotary shaft 10 and It is locked by a washer. The outer peripheral surface of the engaging piece 26 is shown in FIG. The protrusions 27 are formed every 90 °, and the outer peripheral surface of the engaging piece 26 is lined. Grip plates (the other clutch plates) 28, 29 are fitted, and the lining plates 28, 29 One of the sliding plates 23, 24 is interposed between the sliding plates 23, 24 and the slider. The inning plates 28 and 29 are configured to be in close contact with each other.

[0013]   Further, the fixed circular plate 21 has an electromagnetic magnet 210 that attracts the sliding plate 23. Are fixed, and the electromagnetic magnet 210 and the sliding plate 23 are for adjusting the gap. The nut sets the gap between the two. The center of the fixed disk 21 A circular hole is formed in the portion, and a substantially cylindrical operation member 211 is axially formed in the circular hole. It is slidably inserted. On the outer peripheral surface of this operation member 211 for positioning A plurality of step portions are formed, and the operation member 21 is provided between the operation member 211 and the fixed disc 21. 1, a spring member 212 for urging 1 toward the engaging piece 26 is provided, and an operating member 211 Notches that can be engaged with the protrusions 27 of the engaging pieces 26 are formed on the peripheral wall of each 90 °. ing.

[0014]   Further, the sliding plate 23 has bolts (rods) 213 for every 120 ° in the circumferential direction. The lower end portion is screwed, and the upper end side of the bolt 213 has the fixed disc 21 and the cooperation plate 21. 4 is slidably inserted, and the bolt head 215 can be locked with the cooperation plate 214. A spring member 216 is provided between the fixed disc 21 and the cooperation plate 214. Has been done. An insertion hole is formed in the central portion of the cooperation plate 216, and the insertion hole has an upper portion. The operation member 211 is slidably inserted, and a peripheral wall of the operation member 211 is shown in FIG. As shown in FIG. 3, the guide elongated holes 217 having a substantially L shape extending in the circumferential direction and the axial direction face each other. The stopper pieces 218 are inserted into the guide elongated holes 217 and move. It's getting better.

[0015]   While the operation member 211 and the cooperation plate 214 are mutually cooperated as described above, The rotation of the stopper piece 218 restricts the movement of the operation member 211 in the axial direction. Or the regulation is released, and the operation member 211 is moved toward the engagement piece 26. The sliding plates 23 and 24 are disengaged from the lining plates 28 and 29 by the movement, The rotary shaft 10 can be rotated by 211. The spring For the members 25, 212, 216, the spring force is set appropriately according to the purpose. There is.

[0016]   Further, in FIG. 6, 3 indicates that the stopper piece 218 is rotated by a remote manual operation. A manual jig for releasing the braking and rotating the rotary shaft 10. A rod 30 having a fixed length and a grip portion 31 for gripping the stopper piece 218 are configured, A hole into which the rotary operation bar is inserted is formed at the tip of the pad 30, and the grip 31 A notch is formed at the tip of the stopper so that both ends of the stopper piece 218 are sandwiched. It The manual jig 3 may be always engaged with the stopper piece 218, Further, the stopper piece 218 may be structured such that the stopper piece 218 is gripped not at both ends but at the center.

[0017]   Further, in FIG. 7, 4 is for an electric motor for forcibly rotating the rotary shaft 10. In the jig, the electric motor jig 4 has a drive shaft of a portable electric motor (not shown). Consists of an engaging portion 40 that engages and a pipe 41 that transmits a driving force to the operation member 211 When the pipe 41 is formed in such a size that it can be fitted into the distal end of the operation member 211, On the other hand, a notch is formed at the tip end thereof so that the stopper piece 218 is sandwiched between the notch. It The above jigs 3 and 4 are installed in the basement etc. In this case, the braking of the drive motor 1 is quickly released by remote control, It is used to rotate 10 easily and surely. A jig may be used.

[0018]   Next, the function and effect will be described.

[0019]   Before the drive motor 1 is driven, the stopper piece 218 is a circle of the guide elongated hole 217. The operation member 211 is locked to the portion extending in the circumferential direction, whereby the operation member 211 is moved in the engagement direction. The movement of the stopper plate 218 and the spring force of the spring member 216 are restricted by the interlocking plate 214. Positioned with respect to the operation member 211 by the bolt 213, the fixed disk 21 and It is slidable with respect to the link plate 214. In addition, the electromagnetic magnet 210 Is not energized, the sliding plates 23, 24 are urged by the spring member 25 and The rotating shaft 10 is braked by firmly adhering to the ring plates 28 and 29.

[0020]   When the electromagnetic magnet 210 is energized from such a state, the sliding plate 23 moves to the spring portion. The sliding plates 23, 24 are sucked against the urging force of the material 25, and the sliding plates 23, 24 are lined with the lining plates 28, 29. When the drive motor 1 is energized, the rotation shaft 10 can rotate. The data 1 can be operated.

[0021]   On the other hand, a power failure occurs during operation of the drive motor 1, or the electromagnetic magnet 210 If the sliding shaft fails, the sliding plates 23 and 24 are brought into close contact with the lining plates 28 and 29 and 10 will be braked. In this case, use the manual jig 3 as shown in FIG. The stopper piece 218 extends axially from the circumferentially extending portion of the guide elongated hole 217. Rotate to the part you want. Then, the axial movement restriction of the operation member 211 is released. , The operating member 211 is moved in the engaging direction by the urging force of the spring member 212, Engage with piece 26. At the same time, the regulation of the cooperation plate 214 is lifted and the cooperation plate 214 is removed. The sliding plate 2 is moved by the urging force of the spring member 216 to come into contact with the bolt head 215 and slide plate 2 3 is lifted, the sliding plates 23 and 24 are separated from the lining plates 28 and 29 and rotated. The braking of the shaft 10 is forcibly released. After that, rotate the manual jig 3 to operate When the member 211 is rotated, the rotation shaft 10 of the drive motor 1 is forcibly rotated. You can

[0022]   In addition, the braking of the rotary shaft 10 at the time of abnormality is released by such a simple structure. As a result, the manufacturing cost is not so high and it is very practical. It has a good effect.

[0023]   Instead of the manual jig 3, the electric motor jig 4 shown in FIG. Connect a drive shaft such as an electric motor to the jig 4, and connect the jig to the stopper piece. When the operating member 211 is rotated after the regulation is released by rotating the 218, the drive mode is changed. It is also possible to forcibly rotate the rotary shaft 10 of the motor 1.

[0024]   8 and 9 show a driving motor braking mechanism according to a second embodiment of the present invention. You In the figure, the same reference numerals as those in FIGS. 1 to 7 indicate the same or corresponding parts. However, In the present embodiment, the movement restriction of the operation member 211 of the first embodiment and its cancellation. Unlike the above mechanism, the stopper piece 218 is inserted in the operation member 211 in the radial direction. Both ends are projected from the operation member 211 and fixed, while the insertion hole of the cooperation plate 214 A notch 2 through which the projections 220 on both ends of the stopper piece 218 can penetrate is provided on the inner peripheral edge of the 222. 21 is formed, and the operation member is formed when the notch 221 and the both-end protrusions 220 are aligned with each other. 211 is configured to move in the direction of the engagement piece 26, and the operation member 211 does not move. A ring 219 for positioning the movement of the above in the direction of the engaging piece 26 is externally fitted. Note that The operation member 211 of this embodiment has a positioning step as in the first embodiment. There is no need to do it.

[0025]   In this embodiment as well, the same effect as the above embodiment is obtained, but the structure of the braking mechanism is Since it can be easily understood from the above, detailed description thereof will be omitted.

[0026]

[Effect of device]

  As described above, according to the braking mechanism of the drive motor of the present invention, It is possible to rotate the rotating shaft by disengaging or closely contacting the clutch plate by energizing or stopping the In the braking mechanism of the drive motor for braking, fix the engaging piece on the rotary shaft. , An operating member that can be engaged with the engaging piece is axially movably supported on the base of the motor, The operation part is linked to the other side of the clutch plate, and the operation part is operated by rotating the stopper piece. The movement of the material in the axial direction is restricted or configured to be released, and the operation member is engaged. By moving in the direction of one side, the other side of the clutch plate is disengaged from the other side and engaged with the engagement piece. Since the rotating shaft can be rotated by the operating member, a power failure or When an obstacle occurs, the rotary shaft can be quickly and reliably released by remote There is an effect that can be rotated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a main part of a drive motor braking mechanism according to an embodiment of the present invention. FIG. 2 is a front view showing the cooperation plate and the stopper piece in the braking mechanism. FIG. 3 is a cross-sectional configuration diagram showing an operating member in the braking mechanism.
FIG. 4 is a front view showing an operation member in the braking mechanism. FIG. 5 is a perspective view showing an engaging piece in the braking mechanism. FIG. 6 is a sectional view of an essential part showing a jig for releasing the braking of the rotary shaft in the above braking mechanism. FIG. 7 is a cross-sectional view of essential parts showing a jig for forcibly rotating the rotary shaft in the braking mechanism. FIG. 8 is a cross-sectional view of a main portion of a drive motor braking mechanism according to a second embodiment of the present invention. FIG. 9 is a front view showing the cooperation plate in the braking mechanism.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Drive motor 10 Rotation shaft 2 Braking mechanism 21 Fixed disc 23 Sliding plate 24 Sliding plate 26 Engaging piece 28 Lining plate 29 Lining plate 210 Electromagnetic magnet 211 Operating member 212 Spring member 213 Rod 214 Cooperation plate 216 Spring member 217 Guide Long hole 218 Stopper piece 220 Protrusion 221 Notch

Claims (3)

[Scope of utility model registration request] 1. One of the clutch plates 28, 29 is supported on the rotary shaft 10 of the drive motor 1, and the other one of the clutch plates 23,
A base 24 of the drive motor 10 is movably supported in the axial direction. The clutch plates 23, 24, 28 and 29 are brought into close contact with each other to brake the rotary shaft 10 and an electromagnetic magnet 21.
In the braking mechanism 2 in which the other of the clutch plates 23, 24 is axially attracted by the energization of 0 and is disengaged from the one of the clutch plates 28, 29 so that the rotary shaft 10 can rotate, The engaging piece 26 is fixed, and the base 2
1 is an operation member 211 that can be engaged with and disengaged from the engagement piece 26.
Is movably supported in the axial direction, and the operating member 211 is associated with the other side 23 of the clutch plate,
1 is provided with a stopper piece 218 for restricting and releasing the axial movement of the operating member 211 by its rotating operation, and the clutch piece is provided by moving the operating member 211 in the direction of the engaging piece 26. The other of the plates 23, 24 is disengaged from the one of the one 28, 29, and the operating member 211 engaged with the engaging piece 26 allows the rotary shaft 10 to be rotationally operated. . 2. A rod 2 is provided on the other side 23 of the clutch plate.
13 is extended and connected in the axial direction, the rod 213 is slidably inserted and supported by the base portion 21 and the other end is locked by the cooperation plate 214, and the operation plate 2 is connected to the cooperation plate 214.
11 is inserted, and a spring member 216 for urging the cooperation plate 214 in the clutch plate disengagement direction is interposed between the cooperation plate 214 and the base portion 21, and an operation is performed between the operation member 211 and the base portion 21. Member 21
A spring member 212 for urging 1 in the engaging direction is interposed, and an L-shaped guide elongated hole 217 extending in the rotation direction and the axial direction is formed in the operation member 211.
7, the stopper piece 218 is slidably inserted, and when the stopper piece 218 is in the rotational direction portion of the elongated guide hole 217, the axial movement of the cooperation plate 214 with respect to the operating member 211 is restricted. While the movement of the operating member 211 in the engaging direction is restricted, the stopper piece 218 is rotated to move the guide elongated hole 21.
7, the restriction of the axial movement of the cooperation plate 214 is released, and the other side of the clutch plates 23, 24 is released.
Is moved in the disengagement direction by the urging force of the spring member 213, the movement restriction of the operating member 211 in the engaging direction is released, and the engaging piece 26 is urged by the urging force of the spring member 212.
The braking mechanism for the drive motor according to claim 1, wherein the braking mechanism is engaged with. 3. A rod 2 is provided on the other side 23 of the clutch plate.
13 is extended and connected in the axial direction, the rod 213 is slidably inserted and supported by the base portion 21 and the other end is locked by the cooperation plate 214, and the operation plate 2 is connected to the cooperation plate 214.
11 is inserted, and a spring member 216 for urging the cooperation plate 214 in the clutch plate disengagement direction is interposed between the cooperation plate 214 and the base portion 21, and an operation is performed between the operation member 211 and the base portion 21. Member 21
1, a spring member 212 for urging 1 in the engaging direction is interposed, the stopper piece 218 is radially inserted into the operation member 211, and both ends 220 thereof are projected, and the cooperation plate 214 is provided with a stopper. 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 notches 221 of the cooperation plate 214, the operation member 211 and the cooperation plate 214 are separated. While the movement in the axial direction is restricted, the operation member 211 is rotated and the stopper piece 218 is rotated.
When the protrusions 220 on both ends of the clutch plate coincide with the notches 221 of the cooperation plate 214, the restriction of the axial movement of the cooperation plate 214 is released, and the other clutch plates 23 and 24 are connected to the spring member 21.
3 is moved in the disengagement direction by the urging force of 3, and the operation member 211 is released from the restriction of movement in the engagement direction, so that the spring member 2 is released.
The driving motor braking mechanism according to claim 1, wherein the braking member is engaged with the engagement piece 26 by a biasing force of 12.