JPH0783253A - Nonexciting electromagnetic braking device equipped with manual release locking device - Google Patents

Abstract

PURPOSE:To prevent a careless and dangerous manual release operation and a loss of a handle by locking the handle to the non-manual release side with the manual release handle left over as is. CONSTITUTION:The breaking device is equipped with an electric magnet 1, a breaking spring 2, a movable iron core 3, a breaking plate 4, a rotary disc 5, a center hub 6, and with a stud 9 so as to be enclosed by a cover 10. A place close to the outer circumference of the movable iron core 3 is pushed to be moved to the releasing side so as to be manually released by paired eccentric pins 11 which re rotated by a handle 12. A locking means 20 locking the handle 12 onto the cover 10 is made up of a handle receiver 21 which is fixed on the cover 10, and locks the handle 12 by a round section 21a in a J shape, and of a locking member 22 to be rotatably fitted in the handle 12. The locking member 22 is made up of a circular body 22a, bar-like body 22b which is integrated with the circular body 22a, can be disposed at the outside of the round section 21a, and is parallel with the handle 12, and of a screw 22c which is screwed in the opposite side in the circumferential direction of the round section 22b, so that the rocking member is threadedly fastened so as to be locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-excited electromagnetic brake provided with a manual release device that can manually release braking even when the power supply is cut off or there is no power supply.

[0002]

2. Description of the Related Art A non-excited electromagnetic brake is attracted by an electromagnet to release braking and is pressed by a braking spring to brake during operation. For this reason, if the power is cut off due to an accident on the power supply side during driving, braking is always performed, and it is also called a safety brake. However, when the non-excited electromagnetic brake is assembled with the electric motor or the load of the electric motor in the state where the power supply is cut off, it is often desired to move the rotary shaft of the non-excited electromagnetic brake slightly, so that the manual release device is absolutely necessary.

The structure of a conventional non-excitation electromagnetic brake device is as follows.
As is well known in Japanese Examined Patent Publication No. 56-53131, etc., a movable iron core that is movable only in the axial direction and is attracted by an electromagnet to release braking and is pressed by a braking spring to perform braking.
A rotating disc disposed between the movable iron core and the braking plate,
A center hub that is movably coupled only to the rotating disk in the axial direction, a rotating shaft that is fixed to the center hub and supported by bearings, and a connecting member that secures the mutual position between the fixed core of the electromagnet and the braking plate. It is equipped with.

As a manual opening device, it is rotatably arranged at a position facing the outer periphery of the movable iron core, and by this rotation, a portion near the outer periphery of the movable iron core is pushed to move it from the driving side to the opening side. An eccentric pin and a handle for rotating the pair of eccentric pins at the same time are provided, and the handle is urged by a spring toward the driving side (counter-manual opening side).

[0005]

According to the above-mentioned documents,
During operation, the steering wheel is urged toward the operation side by a spring, and the braking is released and excited by excitation and non-excitation. Then, when the power is cut off, the braking can be manually released. However, when the meaning of the handle is not known to workers or when working in the surroundings, the handle may be inadvertently operated to the manually open side while the non-excitation electromagnetic brake device is in operation. It is dangerous because braking will not work. For this reason, the handle may be placed off the eccentric pin,
The handle may be lost when manually opening, or troublesome work of inserting the handle into the eccentric pin may occur.

An object of the present invention is to lock the steering wheel on the driving side (anti-manual opening side) with the steering wheel for manual opening still attached, thereby preventing an inadvertent and dangerous manual opening operation and loss of the steering wheel. It is an object of the present invention to provide a non-excitation electromagnetic brake device including a manual unlocking device.

[0007]

A non-exciting electromagnetic brake device equipped with a manual unlocking device according to the first aspect of the present invention is movable only in the axial direction where it is attracted by an electromagnet to release braking and is pushed by a braking spring. A movable iron core, a rotating disc disposed between the movable iron core and the braking plate, a center hub connected to the rotating disc so as to be movable only in the axial direction, and a bearing fixed to the center hub and supported by bearings. Is a non-exciting electromagnetic brake device including a rotating shaft, and a connecting member that secures mutual positions of the fixed iron core of the electromagnet and the braking plate, and is rotatably disposed at a position facing the outer periphery of the movable iron core. With this rotation, a pair of eccentric pins that push the vicinity of the outer periphery of the movable iron core to move it from the driving side to the opening side, and a handle that simultaneously rotates the pair of eccentric pins are used. Those comprising a locking device for locking the vicinity of the fixed portion of the non-excitation electromagnetic brake device.

Invention 2 is the same as Invention 1, except that the locking device is
It is composed of a handle receiver that is fixed to a fixed portion and elastically locks the vicinity of the center of the handle with a J-shaped rounded portion, and a locking member that is rotatably fitted in the vicinity of the center of the handle.
The locking member comprises an annular body, a rod-shaped body which is integrated with the annular body and can be arranged outside the rounded portion and which is parallel to the handle, and a screw which is screwed to the opposite side in the circumferential direction of the rod-shaped body. is there.

A third aspect of the present invention is the first aspect of the present invention, in which the locking device has a tubular portion rotatably fitted in the vicinity of the center of the handle, a tongue portion fixed to the tubular portion, and the tongue portion detachably attached to the fixing portion. It is made up of screws to be attached to. A fourth aspect of the present invention is the invention of the first aspect, wherein the locking device covers the handle receiver fixed to the fixing portion and elastically locking the vicinity of the center of the handle with the J-shaped rounded portion, and the missing portion of the J-shaped rounded portion. And a retaining portion that is detachably attached to the fixed portion with a screw.

A fifth aspect of the present invention is the lock device according to the first aspect,
With handle holder that is fixed to the fixed part and elastically locks the center of the handle with a J-shaped rounded part, and a hinge that is attached to the tip of the rounded part with a hinge by covering the missing part of the J-shaped rounded part It is composed of a retaining portion and a key lock inserted into the hole of the hinged retaining portion and the hole of the rounded portion.

[0011]

According to the first aspect of the invention, the locking device locks the vicinity of the center of the steering wheel at the driving position with the cover which is the fixed portion. Therefore, the handle is locked to the driving side (counter-manual opening side) with the handle for manual opening still attached to prevent inadvertent and dangerous manual opening operation or loss of the handle.

According to the second aspect of the invention, the handle is elastically locked at the rounded portion of the handle receiver, the annular body of the locking member is rotated to dispose the rod-shaped body outside the rounded portion, and the screw is screwed in. For example, the handle, the rounded portion, and the rod-shaped body are integrated. Therefore, the handle is locked and locked to the rounded portion of the handle receiver. According to the third aspect of the present invention, the tubular portion having the tongue portion is rotatably fitted into the handle and does not come off. If the tongue portion is attached to the fixed portion with a screw, the handle is fixed to the fixed portion and locked. It

According to the invention 4, when the screw is loosened and the retaining portion is rotated around the axis of the screw, the handle is elastically locked by the J-shaped rounded portion of the handle receiver, and the retaining portion is secured. If you return it to the original position and tighten the screw, the handle is fixed to the fixed part and locked. According to the fifth aspect of the invention, the handle is elastically locked by the J-shaped rounded portion of the handle receiver, and if the hinged retaining portion is returned to the original position and the key is locked, the handle is fixed to the fixed portion and the chain. Locked.

[0014]

FIG. 1 is a front view of the embodiment 1 partially showing the AA cross section of FIG. 2, FIG. 2 is a left side view of the main part of FIG. 1, and FIG. 3 is a BB half of FIG. 4 is a cross-sectional view, FIG. 4 is a front view of a second embodiment corresponding to the main parts of FIG. 1, FIG. 5 is a front view of a third embodiment corresponding to the main parts of FIG. 1, and FIG. It is a left side view of Example 4 corresponding to. In each figure, components having the same reference numeral have approximately the same function, and duplicate explanation may be omitted.

In FIGS. 1, 2 and 3, the non-excitation electromagnetic brake device is different in that the brake plate is fixed to the bracket side instead of fixing the electromagnet to the bracket side in the above-mentioned document. It is the same. That is, as is well known, the structure of this non-excitation electromagnetic brake device is an axial direction in which the electromagnet 1 having the fixed iron core 1a and the coil 1b attracts the brake to release the brake and the brake spring 2 pushes the brake. The movable iron core 3 that can be moved only to
And a braking plate 4, a rotary disc 5, a center hub 6 coupled to the rotary disc 5 so as to be movable only in the axial direction like a spline coupling, and a bearing fixed to the center hub 6. 7 is provided with a rotating shaft 8 supported by 7 and a stud 9 as a connecting member for securing the mutual position of the fixed iron core 1a of the electromagnet 1 and the braking plate 4, and the movable iron core 3 is provided only in the axial direction by the stud 9 or another member. It is made movable. A bracket 10a such as an electric motor is attached to the braking plate 4 of the non-excitation electromagnetic brake device.
Are fixed, and the whole is surrounded by the cover 10.

As a manual opening device, as shown in FIG. 3, the movable iron core 3 is rotatably arranged at a position facing the outer periphery of the movable iron core 3, and this rotation pushes the vicinity of the outer periphery of the movable iron core 3 to drive it. A pair of eccentric pins 11 that moves from the side to the open side, and a handle 12 that simultaneously rotates the pair of eccentric pins 11 are provided. The handle 12 may be biased toward the driving side (counter-manual opening side) by a spring (not shown).

As a feature of the first embodiment, as shown in FIGS. 1 and 2, there is provided a locking device 20 for locking the vicinity of the center of the handle 12 in the operating position to the cover 10 which is the fixed portion of the non-excitation electromagnetic brake device. Set up. The locking device 20 is fixed to the cover 10 and has a J-shaped rounded portion 21 near the center of the handle 12.
The handle receiver 21 that is elastically locked by a and the handle 1
2 and a locking member 22 that is rotatably fitted in the vicinity of the center. The locking member 22 is a ring-shaped body 22a, a rod-shaped body 22b that is integrated with the ring-shaped body 22a and that can be arranged outside the rounded portion 21a and that is parallel to the handle 12, and that is screwed into the rod-shaped body 22b on the opposite side in the circumferential direction. And a screw 22c. The number of the annular bodies 22a may be one instead of one pair.

According to such a structure, the locking device 20
Locks the vicinity of the center of the steering wheel 12 in the driving position to the cover 10 which is a fixed portion. For this reason, the handle 12 is locked to the driving side (anti-manual opening side) with the handle 12 for manual opening still attached to prevent accidental and dangerous manual opening operation or loss of the handle. Specifically, the handle 12 is elastically locked by the rounded portion 21a of the handle receiver 21, the ring-shaped body 22a of the locking member 22 is rotated, and the rod-shaped body 22b is arranged outside the rounded portion 21a. If the screw 22c is screwed in, the handle 12, the rounded portion 21a, and the rod-shaped body 22
It becomes one with b. Therefore, the handle 12 is fixed and locked to the rounded portion 21a of the handle receiver 21. In any of the embodiments, the fixing portion is not limited to the cover 10,
The electromagnet 1 or the like may be used.

In the second embodiment shown in FIG. 4, the locking device 4
Reference numeral 0 denotes a tubular portion 41 that is rotatably fitted in the vicinity of the center of the handle 12, a tongue portion 42 fixed to the tubular portion 41,
The tongue 42 includes a screw 43 for detachably attaching the cover 10 to the fixing portion. According to the second embodiment, the tongue 4
The tubular portion 41 having 2 is rotatably fitted into the handle 12 and does not come off. If the tongue portion 42 is attached to the fixed portion with the screw 43, the handle 12 is fixed to the fixed portion and locked.

In the third embodiment shown in FIG. 5, the locking device 5 is used.
0 is fixed to the cover 10 which is a fixed part, and the handle 12
A handle receiver 51 that elastically locks the vicinity of the center with a J-shaped rounded portion and a cover 10 that is a fixed portion and is detachably attached to a cover 10 that covers a defective portion of the J-shaped rounded portion 51. The retaining portion 52. According to the third embodiment, when the screw 53 is loosened and the retaining portion 52 is rotated around the axis of the screw, the handle 12 is elastically locked by the J-shaped rounded portion of the handle receiver 51, and the retaining stopper 52 is retained. When the part is returned to its original position and the screw is tightened, the handle is fixed to the fixing part and locked.

In the fourth embodiment shown in FIG. 6, the locking device 6
0 is fixed to the cover 10 which is a fixed part, and the handle 12
A handle receiver 61 that elastically locks the vicinity of the center with a J-shaped rounded portion, and a hinged retaining portion 62 that is attached to the tip of the rounded portion with a hinge 62a that covers the defective portion of the J-shaped rounded portion. And a key lock 63 inserted into the hole of the hinged retaining portion 62 and the hole of the rounded portion. According to the fourth embodiment, the handle 12 is elastically locked by the J-shaped rounded portion of the handle receiver 61. If the hinged retaining portion is returned to the original position and the key is locked, the handle is fixed to the fixed portion. It is locked and locked.

[0022]

According to the non-excitation electromagnetic brake device equipped with the manual unlocking device of the first aspect of the present invention, the non-excitation electromagnetic braking device provided with the locking device locks the vicinity of the center of the steering wheel at the operating position to the fixed portion of the non-excitation electromagnetic braking device. , The handle can be locked on the driving side (anti-manual opening side) with the handle for manual opening still attached, and there is an effect that the careless and dangerous manual opening operation and the loss of the handle can be prevented. At this time, according to the invention 2, 3, 4 or 5, there is an effect that the structure of the locking device is embodied.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment in which a portion taken along the line AA of FIG. 2 is shown.

FIG. 2 is a left side view of the main part of FIG.

FIG. 3 is a half sectional view taken along line BB of FIG.

FIG. 4 is a front view of a second embodiment corresponding to the main part of FIG.

5 is a front view of a third embodiment corresponding to the main part of FIG.

FIG. 6 is a left side view of the fourth embodiment corresponding to FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Electromagnet 2 Braking spring 3 Movable iron core 4 Braking plate 5 Rotating disc 6 Center hub 7 Bearing 8 Rotating shaft 9 Stud 10 Cover 11 Eccentric pin 12 Handle 20 Locking device 21 Handle receiving 21a Rounded portion 22 Locking member 22a Annular body 22b Rod-shaped Body 22c Screw 40 Locking device 50 Locking device 60 Locking device

Claims (5)

[Claims] 1. A movable iron core which is attracted by an electromagnet to release braking and is pushed by a braking spring to be movable only in an axial direction, and a rotary disc disposed between the movable iron core and a braking plate. A center hub that is movably connected only axially to the rotating disk, a rotating shaft that is fixed to the center hub and supported by bearings, and a connection that secures the mutual position of the fixed iron core of the electromagnet and the braking plate. A non-excitation electromagnetic brake device including a member, which is rotatably disposed at a position facing the outer periphery of the movable iron core.
This rotation includes a pair of eccentric pins that push the vicinity of the outer periphery of the movable iron core to move it from the driving side to the open side, and a handle that simultaneously rotates the pair of eccentric pins. A non-excitation electromagnetic brake device comprising a manual unlocking device, comprising a locking device that locks the fixed part of the non-excitation electromagnetic braking device. 2. A non-exciting electromagnetic brake device comprising a manually-open locking device according to claim 1, wherein the locking device is fixed to a fixed portion and elastically engaged in the vicinity of the center of the handle with a J-shaped rounded portion. It is composed of a handle holder that stops, and a locking member that is rotatably fitted around the center of the handle. The locking member can be arranged integrally with the annular body and outside the rounded portion. A non-excitation electromagnetic brake device comprising a manual unlocking device comprising a rod-shaped body parallel to the handle and a screw screwed to the opposite side in the circumferential direction of the rod-shaped body. 3. A non-exciting electromagnetic brake device comprising a manually-open locking device according to claim 1, wherein the locking device is rotatably fitted in the vicinity of the center of the handle, and fixed to the cylindrical part. A non-excitation electromagnetic brake device including a manual unlocking device, which comprises a tongue portion and a screw that detachably attaches the tongue portion to the fixed portion. 4. A non-exciting electromagnetic brake device comprising a manually-open locking device according to claim 1, wherein the locking device is fixed to a fixing portion and elastically engaged in the vicinity of the center of the handle with a J-shaped rounded portion. A non-excitation electromagnetic brake equipped with a manually openable locking device, characterized in that it comprises a handle receiver that stops and a retaining portion that covers the defective portion of the J-shaped rounded portion and is detachably attached to the fixing portion with a screw. apparatus. 5. A non-exciting electromagnetic brake device comprising a manually-open locking device according to claim 1, wherein the locking device is fixed to a fixed portion and elastically engaged with a J-shaped rounded portion near the center of the handle. The handle holder that stops, the hinged retainer that covers the missing part of the J-shaped rounded part and is attached to the tip of the rounded part with a hinge, and inserts into the hole of this hinged retainer and the hole of the rounded part. A non-exciting electromagnetic brake device having a manually-operated unlocking device.