JP2015031022A - Device and method for switching electric switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device and a method for switching an electric switchgear in which a clutch-off operation can be easily performed by operation means for enabling a movement of an opening/closing member in an opening/closing manner by manual operation.SOLUTION: A shutter curtain being an opening/closing member is moved in an opening/closing manner by winding and feeding of a winding shaft 6 using a drive unit 20. The drive unit 20 is configured by including: a drive shaft 22 connected to a member on a side of the winding shaft 6 via a clutch 24; an electric motor 35 for rotating the drive shaft 22; a braking device 36 for braking the drive shaft 22; and operation means for switching on-off of the clutch 24. In operation means by wire 56 and the like, clutch off means by a bending part 70 or the like is provided for turning off the clutch 24 after turning off the braking device 36 or simultaneously with the turning off of the braking device 36.

Description

  The present invention relates to a switching device and a switching method for an electric switching device for manually switching an electric switching device in which an opening / closing body is opened and closed. For example, an electric shutter device, an electric awning device, etc. It can be used for a type switchgear.

  Patent Document 1 below shows an electric shutter device that electrically opens and closes a shutter curtain serving as an opening / closing body. The electric shutter device is configured by winding and unwinding a winding shaft. A shutter curtain that opens and closes and a drive device that rotates the winding shaft to open and close the shutter curtain. The drive device includes a drive shaft connected to a member on the winding shaft side, an electric motor for rotating the drive shaft, and a brake device for braking the drive shaft, and the electric motor When the drive shaft rotates in the forward and reverse directions, the shutter curtain is opened and closed by winding and unwinding the take-up shaft, and the brake device brakes the drive shaft, so that the shutter curtain stops.

  Further, in Patent Document 1, in order to cope with a power failure that occurs when the shutter curtain is stopped, a failure of an electric motor, or the like, the above-described drive shaft is included in the above-described member on the winding shaft side. It is shown that the clutch can be turned on and off by operating means, and the shutter curtain is manually operated by turning the clutch off with this operating means. Can be opened and closed.

JP-A-7-317471

  However, in the technique disclosed in Patent Document 1, when the clutch is turned off by the operating means so that the shutter curtain can be opened and closed by manual operation, the member on the take-up shaft side via the clutch is used. The drive shaft connected to the brake shaft is braked by the brake device, and a large frictional force is generated in the clutch due to the weight of the shutter curtain transmitted through the member on the winding shaft side. ing. For this reason, it is difficult to easily turn off the clutch by the operation of the operation means, and the operation of the operation means may be difficult.

  An object of the present invention is to provide a switching device for an electric switching device and a switching method thereof, which can easily perform a clutch turning-off operation by an operating means for enabling the opening / closing body to be opened and closed manually. is there.

  An electric opening / closing device switching device according to the present invention includes an opening / closing member that opens and closes by winding and unwinding a winding shaft, and a driving device that rotates the winding shaft to open / close the opening / closing member. A switching device provided in an electric opening and closing device having a drive shaft, wherein the drive device is connected to a member on the winding shaft side via a clutch, and an electric motor for rotating the drive shaft And a brake device for braking the drive shaft, and an operation means for switching the clutch on and off, and the opening / closing body is manually operated by turning the clutch off with the operation means. In the switching device for the electric switchgear that can be moved by opening and closing, the operation means is provided with the operation means after turning off the brake device or simultaneously with turning off the brake device. It is characterized in that the clutch-off means for turning off the clutch is provided.

  In the switching device for the electric switchgear according to the present invention, the operation means for switching the clutch on and off includes the clutch-off means for turning off the clutch after turning off the brake device or simultaneously with turning off the brake device. Therefore, when the operating means is operated, the clutch is turned off after the brake device is turned off, or at the same time the clutch device is turned off.

  For this reason, when the clutch is turned off, the braking action of the drive shaft by the brake device is released in advance, or at the same time the braking action of the drive shaft by the brake device is released, whereby the drive shaft rotates freely. Therefore, even when a large frictional force is generated in the clutch due to the weight of the opening / closing body, the clutch can be easily turned off by the operating means.

  The switching method of the electric opening / closing device according to the present invention includes an opening / closing body that opens and closes by winding and unwinding the winding shaft, and a drive for rotating the winding shaft to open / close the opening / closing body. A drive shaft connected to a member on the winding shaft side via a clutch, an electric motor for rotating the drive shaft, and the drive shaft. A brake device for braking and an operation means for switching the clutch on and off are configured. By turning the clutch off with this operation means, the opening / closing body can be opened and closed by manual operation. In the switching method of the electric switchgear, a brake-off step for turning off the brake device, and after or after the brake-off step And it is characterized in that it includes a clutch-off process for the sometimes off the clutch, a.

  In the switching method of the electric switchgear according to the present invention, after the brake-off process for turning off the brake device is performed first, the clutch-off step for turning off the clutch is performed, or the brake device is Since the clutch-off process for turning off the clutch is performed simultaneously with the brake-off process for turning off, when the clutch is turned off, the braking action of the drive shaft by the brake device is released in advance or the clutch is turned off. At the same time, the braking action of the drive shaft by the brake device is released, so that the drive shaft can freely rotate, so even if a large frictional force is generated in the clutch due to the weight of the opening / closing body, etc. The clutch can be easily turned off.

  In this electric switchgear switching method, a brake-off step for turning off the brake device and a clutch-off step for turning off the clutch after or simultaneously with the brake-off step are performed. To do so, for example, the electric opening and closing device is provided with a first operation means for turning off the brake device and a second operation means for turning off the clutch, and these operation means are operated with a time difference. Or by operating these operating means at the same time.

  Further, in the above-described switching device for an electric switchgear according to the present invention, the brake device can be turned off by operating the operating means, and the configuration of the clutch off means can be realized in any form. can do.

  One example is that the brake device has a brake lever that releases the braking of the drive shaft when pressed, and the operating means is a string-like body that reaches the clutch via the brake lever. The pressing member for applying the pressing force to the brake lever is fixed by pulling the string-like body, and the brake device is turned off between the brake lever and the clutch on the string-like body. And providing the clutch-off means for turning off the clutch.

  According to this, when the string-like body is pulled, the pressing member fixed to the string-like body exerts a pressing force on the brake lever, so that the braking of the drive shaft by the brake device is released, and then the brake lever and the clutch The clutch is turned off by the action of the clutch-off means provided on the string-like body. For this reason, the brake device is turned off first, and then the clutch is turned off.

  When the string-like body in this example is a single string-like member, the above-described clutch-off means is a bending portion provided between the brake lever and the clutch in the single string-like member. be able to.

  In this way, when the string-like body is one string-like member and the clutch-off means is a bending portion provided between the brake lever and the clutch in the one string-like member, one string is used. The elastic member may be provided with a return elastic member for returning to the state before the string-like member is pulled when the pulling operation of the string-like member is released.

  According to this, when the pulling operation of the string-like member is released, the string-like member can be returned to the state before being pulled by the elastic force of the return elastic member.

  In addition, a guide member is disposed in the bending portion of the string-like member in the electric opening and closing device, one string-like member is inserted into the guide hole of the guide member, and the guide hole is bent through the deflection portion. It is preferable to use a linear long hole extending in the direction.

  According to this, even if a bending member as a clutch-off means is provided between one brake member and the clutch on one string-like member, the bending member swings and contacts other members. The guide member can effectively prevent the occurrence of the above.

  Further, the string-like body in the above-described example reaches the clutch via the brake lever, the first string-like member that is provided with the pressing member and does not reach the clutch, and does not pass through the brake lever. The first string-like member and the second string-like member, and the first string-like member and the second string-like member are mutually opposite to each other. While the other is slidable and is provided with overlapping portions, the second string-like member is provided with a contact member, and the first string-like member receives the pressing force from the pressing member as a brake lever. A first contact member for pulling the first string member to act on the contact member is provided, and a contact member is provided for applying a pull force to turn off the clutch to the second string member by contacting the contacted member. Possible to overlap the clutch It may be used as the full means.

  According to this, this overlapping part can be used as a clutch-off means by providing a slidable overlapping part on the first string-like member and the second string-like member instead of the aforementioned bending part.

  In this way, when the overlapping portion is used as the clutch-off means, and when the extended portion extending from the brake lever to the clutch side is provided on the first string-like member, the pulling operation of the first string-like member is performed. A guide member for guiding the movement of the extended portion may be provided on the second string-like member.

  According to this, even if the first string-like member is provided with an extension part extending from the abutting member to the clutch side, the extension part is provided by the guide action of the guide member provided on the second string-like member. Is guided and moved in the moving direction by the pulling operation of the first string member, the first string member can be translated or substantially translated with respect to the second string member, and the clutch It is possible to make a configuration in which the overlapping portion which is the off means is made compact.

  In addition, the first string-like member is provided with a return elastic member for returning the first string-like member to a state before being pulled when the pulling operation of the first string-like member is released. Also good.

  According to this, when the pulling operation of the first string-like member is released, the first string-like member can be returned to the state before being pulled by the elastic force of the return elastic member.

  Moreover, the string-like body in the above-described example is formed including two string-like members connected via an elastic member disposed between the brake lever and the clutch, and among these string-like members, The pressing member may be provided on a string-like member on the brake lever side, and the elastic member may be used as a clutch-off means.

  According to this, the brake device is turned off by the pressing of the pressing member due to the pulling operation of the string-like body, the elastic force of the elastic member gradually increases, and then the clutch is turned off by the elastic force of the elastic member. The clutch can be turned off more reliably after turning off.

  Further, the brake lever provided in the brake device may be a hard lever formed of a hard metal or the like, or formed of an elastic material such as a leaf spring, so that the brake lever is separated from the pressing member described above. It may be elastically curved and deformed by the pressing force.

  According to the latter, when the brake lever receives a pressing force from the pressing member and the brake device is turned off, the brake lever is elastically curved and deformed. The pulling force of the clutch can turn off the clutch more reliably.

  In the present invention, the clutch interposed between the member on the winding shaft side and the drive shaft may be in any form as long as frictional force is generated by the weight of the opening / closing body. The clutch of the example includes a first clutch member on the winding shaft side and a second clutch member on the drive shaft side, and one of the first clutch member and the second clutch member includes: The protrusion formed in the axial direction of the drive shaft is provided so that it can be inserted into and removed from the recess formed on the other side.

  It should be noted that the concave portions and the protrusions may be minute ones provided in a rough surface shape, or may have a size larger than the minute one and one or several of them.

  Further, the above-described string-like body and string-like member may be any elongated member, for example, a wire, a chain, a synthetic resin string, or the like.

  The present invention described above can be applied to turn off the clutch of an arbitrary electric opening / closing device so that the opening / closing body can be opened and closed by manual operation. The electric opening / closing device may be an electric shutter device. An electric awning device may be used.

  The electric shutter device may be a garage shutter device, an entrance / exit shutter device for a store, a window shutter device, a disaster prevention shutter device, or the like.

  According to the present invention, it is possible to obtain an effect that the clutch can be easily turned off by the operating means for enabling the opening / closing body to be opened and closed manually.

FIG. 1 is a front view showing the entirety of an electric shutter device which is an electric switchgear according to an embodiment of the present invention. FIG. 2 is a partially omitted front view showing a part of a winding shaft of the electric shutter device of FIG. 3 is a cross-sectional view taken along line S3-S3 of FIG. FIG. 4 is a partial cross-sectional front view showing a structure of a drive device including a clutch, with a part omitted. FIG. 5 is a view similar to FIG. 4 showing when the brake device and the clutch are turned off. FIG. 6 is a view showing a structure for turning on and off the clutch by pulling a wire that is a string-like body as an operation means, and showing a state before the wire is pulled. . FIG. 7 is a view similar to FIG. 6 showing the case where the first pulling operation of the wire of FIG. 6 is performed and the clutch is switched from on to off as shown in FIG. FIG. 8 is a view similar to FIG. 6 showing when the second pulling operation of the wire of FIG. 6 is performed in order to switch the clutch from OFF to ON again. FIG. 9 is a view showing an embodiment relating to a guide member having a guide hole for guiding the bending portion of the wire shown in FIG. 4. FIG. 10 is a view similar to FIG. 4 showing an embodiment in which an overlapping portion is used as a clutch-off means instead of the wire bending portion. FIG. 11 is an enlarged view of the overlapping portion of FIG. FIG. 12 is a view similar to FIG. 11 showing when the brake device and the clutch are turned off. FIG. 13 is an enlarged view showing an embodiment in which the clutch-off means is an elastic member interposed between two string-like members. FIG. 14 is a view similar to FIG. 13 showing when the brake device and the clutch are turned off.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. FIG. 1 is an overall front view of an electric switchgear according to an embodiment of the present invention. This electric switchgear opens and closes an entrance of a store or the like by a shutter curtain which is an open / close body. This is an electric entrance / exit shutter device.

  As shown in FIG. 1, both end portions in the width direction of the shutter curtain 1 that opens and closes the doorway are slidable in the vertical direction inside a pair of left and right guide rails 3 attached to a structure housing 2 such as a wall. The upper end of the shutter curtain 1 in which the curtain body is formed by inserting and arranging a large number of slats up and down is inserted into the shutter case 4 disposed above the entrance and exit. It is coupled to an outer peripheral surface of a take-up shaft 6 that is rotatably spanned horizontally between a pair of left and right brackets 5 of the shutter case 4. For this reason, the shutter curtain 1 can be wound around the take-up shaft 6 by forward and reverse rotation of the take-up shaft 6 so that the shutter curtain 1 can open and close the entrance / exit. Open and close up and down.

  In addition, when this electric shutter device is switched to a manual type as will be described later, in order to be able to open and close the shutter curtain 1 by a manual operation, a handle member for placing a hand on the shutter curtain 1 or the like May be provided.

  FIG. 2 shows the winding shaft 6 housed in the shutter case 4. The take-up shaft 6 is rotatable about a central shaft 8 outside the central shaft 8 and a central shaft 8 that is non-rotatably supported by bearing members 7 provided on the pair of left and right brackets 5. The rotating body 9 is included. And this rotary body 9 is arrange | positioned by the some wheel member 10 arrange | positioned at intervals in the axial direction of the winding shaft 6, and the plurality at intervals in the circumferential direction of the winding shaft 6, Each of the wheel members 10 is formed by a rod-like connecting member 11 that connects the wheel members 10 to each other, and each wheel member 10 is rotatably supported by the central shaft 8 via a bearing member 12. Is rotatable with respect to the central axis 8.

  The upper end portion of the shutter curtain 1 is coupled to the outer peripheral surface of the wheel member 10 respectively. For this reason, when the rotating body 9 rotates in the reverse direction with respect to the central axis 8, in other words, the winding shaft 6 rotates in the reverse direction. As a result, the shutter curtain 1 is wound around the rotating body 9 and moved upward, and when the rotating body 9 rotates forward with respect to the central axis 8, in other words, the winding shaft 6 rotates forward. As a result, the shutter curtain 1 is drawn out from the rotating body 9 and moved downwardly.

  As shown in FIG. 2, a plurality of return springs 13 by coil springs are bridged between the center shaft 8 and the rotating body 9, and one end of these return springs 13 is connected to the center shaft. 8, and the other end is connected to the wheel member 10, so that the return spring force is accumulated in these return springs 13 during the forward rotation of the rotating body 9 when the shutter curtain 1 is extended. During the reverse rotation of the rotating body 9 when the shutter curtain 1 is wound up, the reverse spring force assists the reverse rotation of the rotating body 9.

  As shown in FIG. 2, the take-up shaft 6 has a drive device 20 for automatically rotating the take-up shaft 6 forward and backward, in other words, the rotating body 9 is automatically moved with respect to the center shaft 8. A driving device 20 is arranged for normal and reverse rotation. As shown in FIG. 3, which is a cross-sectional view taken along line S3-S3 of FIG. 2, the drive device 20 includes a rotating gear 21 having a recess 21A in which a plurality of connecting members 11 are fitted, As shown in FIG. 2, the drive device main body 23 having a drive shaft 22 for rotating the rotary gear 21, the rotary gear 21 serving as a member on the winding shaft 6 side, and the drive device main body 23. And a clutch 24 which is interposed between the drive shaft 22 which is a member on the side, and which has a structure and operation which will be described later, and when the clutch 24 is on, the drive shaft By rotating forward and backward 22, the rotating gear 21 rotates forward and backward, whereby the rotating body 9 in which the connecting member 11 is fitted in the recess 21 </ b> A, in other words, the winding shaft 6 rotates forward and backward. It is like that.

  As shown in FIG. 3, among the members constituting the driving device 20, the rotary gear 21 that is a member on the winding shaft 6 side is an internal gear having a tooth portion 21 </ b> B formed on the inner peripheral surface. Further, the driving device 20 has a roller bracket 26 in which a plurality of rollers 27 in the present embodiment, three rollers 27 are rotatably arranged in the circumferential direction of the winding shaft 6. On the inner peripheral surface of the gear 21, a ring-shaped groove 21C into which the rollers 27 are fitted is formed. The roller bracket 26 is coupled to a drive device main body bracket 25 to which the drive device main body 23 shown in FIGS. 2 and 4 is attached by a bolt 28 shown in FIG. A pinching member 29 swingable around a pin 29A provided at one end shown in FIG. 3 is attached, and the other end of the pinching member 29 swung around the pin 29A is provided. The driving device main body bracket 25 is attached to the central shaft 8 by the clamping action of the clamping member 29 by coupling the portion to the driving device main body bracket 25 by the bolt 30. The rotating gear 21 is rotatable about the central axis 8 while being supported by a plurality of rollers 27, and the rotating body 9 connected to the rotating gear 21 by a rod-shaped connecting member 11 is also centered on the central axis 8. It becomes freely rotatable.

  As shown in FIG. 4, the drive device main body 23 includes an electric motor 35 for rotating the drive shaft 22 forward and backward via a speed reduction mechanism, and a brake device 36 for braking the drive shaft 22. . The brake device 36 is disposed on the outer peripheral side of the rotary shaft 37 connected to the drive shaft 22, and includes a solenoid 38 fixed to the case 23 </ b> A of the drive device body 23, and a first attached to the end face of the solenoid 38. A first connecting member 39, a second connecting member 40 coupled to the rotating shaft 37, facing the axial direction of the first connecting member 39 and the rotating shaft 37, that is, the axial direction of the drive shaft 22, and the rotating shaft 37. A brake having a permanent magnet 41 coupled to the rear end, a first connection member 39 and a second connection member 40, and a hole 42A in which a rotary shaft 37 is loosely inserted. And a front end portion of the brake lever 42 protrudes to the outside of the case 23A of the drive device main body 23.

  When the energization of the solenoid 38 fixed to the case 23 </ b> A of the drive device body 23 is stopped, the second connection member 40 is connected to the first connection of the solenoid 38 via the brake lever 42 by the magnetic force of the permanent magnet 41. Since it is connected to the member 39, the rotating shaft 37 to which the second connecting member 40 is coupled cannot rotate, and therefore the driving shaft 22 connected to the rotating shaft 37 cannot also rotate. The brake device 36 is turned on to brake the drive shaft 22.

  On the other hand, when the solenoid 38 is energized, the repulsive force between the magnetic force of the solenoid 38 and the magnetic force of the permanent magnet 41 causes the second connection member 40 and the first connection member 39 to be connected via the brake lever 42. The connection is released, whereby the brake device 36 is turned off, the rotary shaft 37 can rotate, and thus the drive shaft 22 can also rotate.

  The energization to the solenoid 38 and the energization stop and the forward / reverse drive of the electric motor for rotating the drive shaft 22 forward / reversely are controlled by the control device 43 attached to the bracket 25 for the drive device body. The control is not performed by the operator operating the electric shutter device according to the present embodiment from the operation device (not shown) arranged in the structure housing 2 shown in FIG. This is performed based on a signal sent from the operating device to the control device 43 by radio such as an electric cable or infrared rays.

  Further, as shown in FIG. 4, a rotary encoder 45 is attached to the above-described sandwiching member 29, and the rotary encoder 45 meshes with a tooth portion 21 </ b> B that is an internal tooth of the rotary gear 21. The pinion gear 46 is connected. For this reason, when the above-described clutch 24 is turned on, when the rotary gear 21 is rotated by the drive shaft 22 of the drive device body 23 and the winding shaft 6 is rotated, the opening / closing movement of the shutter curtain 1 is determined. A signal indicating whether or not the position has been reached is input from the rotary encoder 45 to the control device 43 based on the rotational speed of the pinion gear 46 and the like.

  The operation device (not shown) includes an “open” button for opening and moving the shutter curtain 1 upward, a “close” button for closing and moving the shutter curtain 1 downward, and movement of the shutter curtain 1. A “stop” button for stopping is provided.

  In the normal operation when these buttons are operated, the clutch 24 shown in FIGS. 2 and 4 is turned on. In other words, the rotational force of the drive shaft 22 of the drive device body 23 passes through the clutch 24. And transmitted to the rotating gear 21.

  When the shutter curtain 1 is fully opened when the lower end of the shutter curtain 1 reaches the lower surface of the shutter case 4, or when the lower end of the shutter curtain 1 reaches the middle position in the opening and closing movement direction (half-closed state) When the “close” button is operated in the half-open state), the solenoid 38 of the brake device 36 is energized by the control of the control device 43 that receives a signal from the “close” button, and the brake device 36 is turned from on to off. Since the electric motor 35 is positively driven by the control signal from the control device 43 while being switched, the shutter curtain 1 is caused by the dead weight of the shutter curtain 1 and the positive rotation of the drive shaft 22 by the driving force of the electric motor 35. The winding shaft 6 is fed downward from the winding shaft 6 by the forward rotation of the winding shaft 6. When the shutter curtain 1 thus moved to the closed position reaches the fully closed position, the control device 43 stops energizing the solenoid 38 and turns on the brake device 36 by a signal from the rotary encoder 45 that detects the fully closed position. In addition, the positive drive of the electric motor 35 is stopped.

  Further, when the shutter curtain 1 is fully closed, or when the shutter curtain 1 is in a half-open state (semi-closed state) where the lower end of the shutter curtain 1 has reached an intermediate position in the opening / closing movement direction, ”Button is operated, the control device 43 that receives a signal from the“ open ”button energizes the solenoid 38 of the brake device 36 to turn off the brake device 36, and the electric motor 35 is controlled by the control device 43. By being driven in reverse, the drive shaft 22 rotates in the reverse direction, whereby the shutter curtain 1 is wound around the winding shaft 6 by the reverse rotation of the winding shaft 6 and moves open. When the shutter curtain 1 reaches the fully open position, the control device 43 stops energization of the solenoid 38 by the signal from the rotary encoder 45 that detects the fully open position, and returns the brake device 36 to the on state. 35 reverse drive is stopped.

  Further, when the “stop” button is operated while the shutter curtain 1 is closing and moving, the control device 43 that receives a signal from the “stop” button stops the energization of the solenoid 38 and the brake device 36 is activated. At the same time as being turned on, the positive drive of the electric motor 35 is stopped under the control of the control device 43, whereby the shutter curtain 1 stops at that position. Further, if the “stop” button is operated while the shutter curtain 1 is being opened and moved, the energization to the solenoid 38 is stopped by the control device 43 that receives a signal from the “stop” button. Is turned on, and the reverse drive of the electric motor 35 is stopped under the control of the control device 43, whereby the shutter curtain 1 stops at that position.

  The brake device 36 can be switched on and off by manually operating the brake lever 42 shown in FIG. That is, as can be seen from FIG. 5, when a pressing force is applied to the distal end portion of the brake lever 42 by manual operation, the brake lever 42 has a base portion in which a hole 42A into which the rotary shaft 37 is loosely inserted is formed. Therefore, the first connecting member 39 and the second connecting member 40 that are connected to each other via the brake lever 42 by the magnetic force of the permanent magnet 41 are separated from each other. By manually operating the brake device 36, the brake device 36 can be turned off, and by stopping the manual operation of the brake lever 42, the brake device 36 can be switched on.

  FIG. 4 shows the structure of the clutch 24 described above. The clutch 24 is spline-fitted to the first clutch member 51 that is rotatable about a shaft 50 provided in the drive device main body bracket 25 and the drive shaft 22 of the drive device main body 23. And a second clutch member 52 that rotates integrally with the drive shaft 22 and is slidable in the axial direction of the drive shaft 22. The first clutch member 51 on the winding shaft 6 side is a pinion gear meshing with a tooth portion 21 </ b> B that is an internal tooth of the rotating gear 21, and is on the drive shaft 22 side. The second clutch member 52 is always subjected to a resilient force toward the first clutch member 51 by a resilient member 53 formed by a coil spring interposed between the drive device main body 23 and the second clutch member 52. ing.

  Further, one of the first clutch member 51 and the second clutch member 52 can be removably inserted into a recess 51A formed on the other, and protrudes in the axial direction of the drive shaft 22. A protrusion 52A is provided. The recess 51A in the illustrated example is formed in the first clutch member 51 so as to be recessed toward the rotary gear 21 in the axial direction of the drive shaft 22, and the protrusion 52A is formed in the second clutch member 52 in the axial direction of the drive shaft 22. As shown in FIG. 5 showing when the clutch 24 is off, a plurality of these recesses 51A and protrusions 52A are formed in the circumferential direction of the drive shaft 22. One is provided.

  When the second clutch member 52 is pressed to the first clutch member 51 side by the resilient force of the resilient member 53 and the protrusion 52A is inserted into the recess 51A, the clutch 24 is connected and turned on, At this time, since the rotation of the drive shaft 22 of the drive device body 23 is transmitted from the second clutch member 52 to the first clutch member 51, the pinion gear meshes with the tooth portion 21B of the rotary gear 21. The rotary gear 21 is rotated by the first clutch member 51 and the winding shaft 6 is also rotated.

  On the other hand, when the second clutch member 52 moves away from the first clutch member 51 against the elastic force of the elastic member 53 and the projection 52A comes out of the recess 51A, the clutch 24 is disconnected. At this time, since the rotation of the drive shaft 22 of the drive device main body 23 is not transmitted from the second clutch member 52 to the first clutch member 51, the rotating gear 21 does not rotate and the winding shaft 6 does not rotate either.

  6 to 8 show a mechanism for turning the clutch 24 on and off. The swing member 55 shown in FIG. 6 and constituting the clutch 24 is swingable around the pin 55A provided on the drive device main body bracket 25, and this swing member. As shown in FIG. 4, an engaging portion 55 </ b> B that engages with a ring-shaped groove 52 </ b> B formed over the entire circumference of the second clutch member 52 is provided at 55. Further, as shown in FIG. 6, the proximal end portion of the wire 56 is connected to the distal end portion of the swing member 55 opposite to the pin 55A, and this wire 56 turns on the clutch 24. The operation means for switching off is a string-like body and is also a single string-like member. As shown in FIGS. 4 and 5, the wire 56 extends substantially parallel to the axial direction of the central shaft 8 of the winding shaft 6 from the swinging member 55 to the side opposite to the rotating gear 21 side. The leading end of the wire 56 is led out of the shutter case 4 in FIG. 1 by passing through the right side bracket 5 shown in FIG. 5 from the inside of the winding shaft 6. To switch on and off, the tip of the wire 56 can be pulled. When this pulling operation is performed, the swing member 55 swings in the direction A in FIG. 6 about the pin 55A.

  The drive device main body bracket 25 is provided with a cam member 57 at a position in the swing direction A of the swing member 55. The cam member 57 is rotatable around a pin 57A. By the spring force of the torsion coil spring 58 around which the coil portion is wound around the pin 57A, the pin 57A is always elastically biased in the direction B in FIG. The rotation in the direction B by this elastic biasing is stopped by the cam member 57 coming into contact with the stepped portion 25A of the drive device main body bracket 25. The cam member 57 is movable as a whole in the axial direction of the pin 57A (front and back direction in FIG. 6). Further, the cam member 57 is formed with a recess 61 having an opening between the first and second protrusions 59 and 60, and the tip of the rear end 61 </ b> A of the recess 61 is formed. The rear surface portion 62 of the portion has a portion where the thickness dimension is the largest on the side opposite to the pin 57A side in the rear end portion 61A, and the inclined surface whose thickness dimension further decreases gradually toward the pin 57A side. It has become.

  When the wire 56 is pulled (first pulling operation), the protrusion 55C provided on the swinging member 55 swinging in the A direction is brought into contact with the curved outer surface 59A of the first protrusion 59 of the cam member 57. And then reaches the inclined outer surface portion 60A of the second protrusion 60, and then the protrusion 55C enters the recess 61 as shown in FIG. The rear end portion 61A of the rear end comes into contact with a portion opposite to the pin 57A side, and the swinging member 55 and the cam member 57 are stopped in this state. The cam member 57 at this time is slightly rotated in the direction opposite to the B direction around the pin 57A due to the pressing from the protrusion 55C.

  When the wire 56 is pulled as described above, the engaging portion 55B of the swinging member 55 engaged with the ring-shaped groove 52B of the second clutch member 52 by swinging the swinging member 55 in the A direction. 5, the second clutch member 52 that is spline-fitted to the drive shaft 22 is compressed along the drive shaft 22 while compressing the resilient member 53 as shown in FIG. As a result, the clutch 24 is turned off when the projection 52A of the clutch 24 comes out of the recess 51A.

  Thereafter, as shown in FIG. 8, when the wire 56 is further pulled (second pulling operation), the back end 61 </ b> A of the recess 61 is in contact with the opposite side of the pin 57 </ b> A side. As described above, the protrusion 55C of the swing member 55 has the largest thickness at the portion of the back end 62A opposite to the pin 57A side of the back end 61A. Since the tip portion is an inclined surface whose thickness dimension gradually decreases toward the pin 57A, the entire cam member 57 is moved so as to float in the axial direction of the pin 57A, and the coil spring The cam member 57 reaches the back surface portion 62 provided on the back surface of the cam member 57 while rotating and returning the cam member 57 in the B direction by the spring force of 58. Thereafter, when the pulling operation of the wire 56 is stopped, the second clutch member 52 moves to the first clutch member 51 side by the elastic force of the elastic member 53 of FIG. It will return to its original position.

  Then, as the second clutch member 52 moves toward the first clutch member 51, as shown in FIG. 4, the protrusion 52A is reinserted into the recess 51A, whereby the clutch 24 is returned to ON. When the positions of the protrusions 52A and the recesses 51A in the circumferential direction of the drive shaft 22 do not match, the protrusions 52A are inserted into the recesses 51A when the drive shaft 22 rotates.

  As described above, pulling the wire 56 to turn off the clutch 24 means that a power failure occurs when the shutter curtain 1 is stopped, or a failure occurs in the electric motor 35 of the drive device 20. In addition, it is performed in order to enable the shutter curtain 1 to be opened and closed manually. When the clutch 24 is turned off, the rotation on the winding shaft 6 side is not transmitted to the drive shaft 22 even when the brake device 36 is turned on. Therefore, the shutter curtain 1 is opened and closed by manual operation to move the winding shaft 6. Can be rotated.

  However, when the shutter curtain 1 is stopped at the fully open position or the like, even if an attempt is made to turn off the clutch 24 by pulling the wire 56, there is a winding shaft between the recess 51A and the protrusion 52A of the clutch 24. 6 and a large frictional force due to the weight of the shutter curtain 1 transmitted through the rotating gear 21 is generated, and the brake device 36 is on when the shutter curtain 1 is stopped. Even if 56 is pulled, the clutch 24 cannot be easily turned off.

  For this reason, the wire 56 of the present embodiment is provided with a clutch-off means that can turn off the clutch 24 after turning off the brake device 36 as a countermeasure for solving such a problem.

  Next, the clutch-off means will be described.

  The wire 56 extending to the clutch 24 by connecting the base portion to the swing member 55 of FIG. 6 slides into the hole 42B provided at the tip of the brake lever 42 as shown in FIG. The wire 56 passes through the brake lever 42 by being freely inserted, and the wire 56 is slidably inserted from the brake lever 42 into guide members 63 and 64 by a binding band or the like provided in the drive device main body 23. Guided and reaches the clutch 24 as described above.

  A coil spring 65 serving as a return elastic member is wound around the wire 56 between the brake lever 42 and the clutch 24, more specifically, between the brake lever 42 and the guide member 63. Both ends of the coil spring 65 are received by a first spring receiving member 66 and a second spring receiving member 67 into which the wire 56 is slidably inserted.

  In addition, a coupling member 68 is coupled to the wire 56 at a position closer to the clutch 24 than the second spring receiving member 67 out of the first spring receiving member 66 and the second spring receiving member 67. 56, a stop member 69 is fixed at a position opposite to the first spring receiving member 66 with the brake lever 42 therebetween, and the normal wire 56 has the stop member 69 attached to the brake lever 42. They are in contact.

  Further, the wire 56 is provided with a bending portion 70 between the brake lever 42 and the clutch 24, more specifically, between the guide member 63 and the guide member 64.

  When the pulling operation of the wire 56 is performed in order to turn off the clutch 24, the second spring receiving member 67 is coiled by the pressing action of the coupling member 68 coupled to the wire 56, as shown in FIG. The first spring receiving member 66 that compresses the spring 65 and moves the first spring receiving member 66 to the brake lever 42 side and receives the compression repulsive force of the coil spring 65 presses the brake lever 42. For this reason, the first spring receiving member 66 becomes a pressing member provided on the wire 56, and the brake lever 42 is pressed by this pressing member. As in the case of receiving pressure, the brake device 36 is turned off.

  When the brake device 36 is turned off in this way, the flexure 70 in FIG. 4 disappears as shown in FIG. 5, and when the wire 56 is further pulled thereafter, the swinging member 55 in FIG. Since it swings as shown in FIG. 7, the clutch 24 is turned off.

  For this reason, by providing the bending portion 70 on the wire 56 serving as the operating means to be pulled, the clutch 24 can be turned off after the braking device 36 is turned off. This is a clutch-off means that can turn off the clutch 24 after turning off.

  As described above, when the clutch 24 is turned off after the brake device 36 is turned off, the shutter curtain 1 is transmitted between the recess 51A and the protrusion 52A of the clutch 24 via the winding shaft 6 and the rotating gear 21. Even if a large frictional force is generated due to its own weight, etc., the drive shaft 22 and the rotary shaft 37 shown in FIG. When the drive shaft 56 and the rotary shaft 37 are slightly rotated when the 56 is pulled, a recess 51A that is recessed in the axial direction of the drive shaft 22 and a protrusion 52A that protrudes in the axial direction of the drive shaft 22 are provided. Thus, the protrusion 52A can come out of the recess 51A of the clutch 24, and the wire 5 for turning off the clutch 24 is therefore reduced. Capable of pulling operation easily.

  In addition, means for maintaining the pulling operation state of the wire 56 when the wire 56 is pulled is provided at a place where the wire 56 is pulled, and then when the wire 56 is pulled, The pulling operation state of the wire 56 by the means is released, and the wire 56 can be pulled again.

  As described above, after the clutch 24 is turned off, the shutter curtain 1 can be opened and closed manually, and the winding shaft 6 can be rotated. Further, by pulling the wire 56 again, as can be understood from the above description, the clutch 24 can be switched from OFF to ON, and the brake device 36 is switched ON.

  Further, according to the present embodiment, when the pulling operation of the wire 56 is released, the coupling member 68 and the second spring receiving member 67 return to the original positions in FIG. 4 by the elastic force of the compressed coil spring 65. Then, the wire 56 returns to the original state in which the bending portion 70 is provided when the stop member 69 contacts the brake lever 42. For this reason, the coil spring 65 is a return elastic member for returning the wire 56 to the original state before the pulling operation.

  The embodiment of FIG. 9 shows an embodiment in which the guide member 71 is attached to the drive device main body 23 and the like at the position of the bending portion 70 of the wire 56. The guide member 71 is formed with a linear long hole 71A that is long in the bending direction of the bending portion 70, and the bending portion 70 is inserted into the long hole 71A.

  According to this embodiment, since the guide member 71 prevents the bending portion 70 of the wire 56 from swinging in a direction other than the bending direction, the bending portion 70 contacts the drive device main body 23 or other members. Can be effectively prevented.

  FIG. 10 shows another embodiment of the clutch-off means for turning off the clutch 24 after turning off the brake device 36.

  In this embodiment, the string-like body 80, which is an operation means for switching the clutch 24 on and off, is slidably inserted into the hole 42B of the brake lever 42, like the wire 56 of the above-described embodiment. The first wire 81 as the first string-like member that does not reach the clutch 24, and does not pass through the brake lever 42, and overlaps with the first wire 81. And a second wire 82 as a second string-like member that reaches the clutch 24. As with the wire 56, the first wire 81 includes a coil spring 65 that is a return elastic member, a first spring receiving member 66, a second spring receiving member 67, a coupling member 68, and a stop member 69. And are provided.

  FIG. 11 is an enlarged view of an overlapping portion 86 where the first wire 81 and the second wire 82 overlap. The first wire 81 is provided with an extending portion 81A extending from the brake lever 42 of FIG. 10 through the guide member 63 to the clutch 24 side, and an abutting member 87 is coupled to the extending portion 81A. In addition, an end member 83 is coupled to the rear end portion of the extending portion 81A. A contact member 84 is coupled to the tip of the second wire 82 on the brake lever 42 side, and the first wire 81 is slidably inserted into the contact member 84. Further, a guide member 85 for slidably guiding the movement of the extending portion 81 </ b> A of the first wire 81 is coupled to the second wire 82 on the clutch 24 side of the contacted member 84.

  In this embodiment, when the first wire 81 is pulled, the first spring receiving member 66 acts as a pressing member to press the brake lever 42 as in the above-described embodiment. When the first wire 81 is further pulled after that, the contact member 87 contacts the contacted member 84 as shown in FIG. The pulling force is transmitted to the second wire 82. Thereby, the swing member 55 of FIG. 6 to which the rear end portion of the second wire 82 is connected swings, and the clutch 24 is switched from on to off.

  For this reason, the overlapping part 86 of the first wire 81 and the second wire 82 where the contact member 87 and the contacted member 84 are provided is such that the first wire 81 and the second wire 82 are opposite to each other. The overlapping portion 86 serves as a clutch-off means for turning off the clutch 24 after the brake device 36 is turned off.

  Also in this embodiment, the coil spring 65 provided in the first wire 81 is in the original state before the first wire 81 is pulled when the pulling operation of the first wire 81 is released. This is a return elastic member for returning to the position.

  In this embodiment, the portion serving as the clutch-off means is an overlapping portion 86 in which the first wire 81 and the second wire 82 are slidable with respect to one another. When the first wire 81 is pulled in order to turn off the brake device 36, the first wire 81 with respect to the second wire 82 is guided by the guiding action of the guide member 85 at the overlapping portion 86. 81 can be translated or substantially translated, and unlike the above-described bending portion 70, the clutch-off means can be made compact.

  The brake lever 42 'in the embodiment of FIGS. 13 and 14 is formed of an elastic material such as a leaf spring. Moreover, in this embodiment, the string-like body 90 which is an operation means for turning off the brake device 36 and turning off the clutch 24 includes two wires 91 and 92 which are two string-like members, and these The coil spring 93 is interposed between the wires 91 and 92 and is an elastic member that connects the wires 91 and 92 in series. The coil spring 93 is disposed between the brake lever 42 ′ and the clutch 24. Of the wires 91 and 92, the wire 91 on the brake lever 42 ′ side is a hole 42 formed in the brake lever 42 ′. Since “B” is slidably inserted, it passes through the brake lever 42 ′, and the wire 91 has a pressing member 94 and a stop member 95 at two positions sandwiching the brake lever 42 ′. Are combined. The wire 92 reaches the swing member 55 of the clutch 24 shown in FIG.

  In this embodiment, when the wire 91 is pulled, as shown in FIG. 14, the pressing member 94 presses the brake lever 42 ′ while the coil spring 93 is elastically stretched and deformed. The brake device 36 is turned off, and the extension deformation of the coil spring 93 is gradually increased, and the spring force of the coil spring 93 acts on the wire 92. This spring force is applied to the recess 51A and the protrusion 52A of the clutch 24. When the frictional force is greater than the frictional force generated during the period, the clutch 24 is turned off by the pulling force of the wire 92.

  For this reason, in this embodiment, the coil spring 93 is a clutch-off means for turning off the clutch 24 after turning off the brake device 36.

  Further, since the brake lever 42 'of this embodiment is an elastic member made of an elastic material such as a leaf spring, the brake lever 42' when pressed by the pressing member 94 is shown in FIG. As shown in FIG. Since the coil spring 93 is further expanded and deformed as much as the brake lever 42 'is curved and deformed, the spring force of the coil spring 93 can be increased, whereby the clutch 24 is more reliably turned off. It can be.

  In each of the embodiments described above, the clutch 24 is turned off after the brake device 36 is turned off. For example, a wire for the brake device 36 and a wire for the clutch 24 are provided. By enabling these wires to be pulled simultaneously (for example, connecting a single wire to the joint between the ends of these wires so that they can be pulled), the brake device 36 and the clutch 24 may be turned off at the same time, so that the clutch can be easily turned off by the operating means for making the shutter curtain 1 openable and movable by manual operation. Become.

  INDUSTRIAL APPLICABILITY The present invention can be used for manually switching the opening / closing movement of an opening / closing body of an electric opening / closing device such as an electric shutter device or an electric awning device.

DESCRIPTION OF SYMBOLS 1 Shutter curtain which is an opening-and-closing body 3 Guide rail 6 Winding shaft 8 Center shaft 9 Rotating body 10 Wheel member 11 Rod-shaped coupling member 20 Drive device 21 Rotating gear 22 which is a member on the winding shaft side 22 Drive shaft 23 Drive device main body 24 Clutch 35 Electric motor 36 Brake device 42, 42 ′ Brake lever 51 First clutch member 51 </ b> A recess 52 on the take-up shaft side 52 </ b> A second clutch member 52 </ b> A projection 56 on the drive shaft side Wire 65 that is also a string-like member 65 Coil spring that is an elastic member for return 66 First spring receiving member that is a pressing member 70 Bending portion that is a clutch-off means 71 Guide member 71A Linear long holes 80, 90 With an operating means A certain string-like body 81 A first wire that is a first string-like member 81A An extended portion 82 A second wire that is a second string-like member -84 Contacted member 85 Guide member 86 Overlapping portion as clutch-off means 87 Contact member 91, 92 Wire as string-like member 93 Coil spring as clutch-off means and elastic member 94 Pressing member

Claims (12)

A switching device provided in an electric opening and closing device having an opening and closing body that opens and closes by winding and unwinding of the winding shaft, and a driving device for rotating the winding shaft to move the opening and closing body. And
The drive device is connected to a member on the winding shaft side via a clutch, an electric motor for rotating the drive shaft, a brake device for braking the drive shaft, An operation unit for switching on and off the clutch, and by switching the clutch with this operation unit, the opening and closing body can be opened and closed by manual operation.
A switching device for an electric opening / closing device, wherein the operating means is provided with a clutch-off means for turning off the clutch after turning off the brake device or simultaneously with turning off the brake device.   The switching device for an electric switchgear according to claim 1, wherein the brake device includes a brake lever that releases the braking of the drive shaft when pressed, and the operating means passes through the brake lever. And a pressing member for applying the pressing force to the brake lever when the string is pulled is fixed to the string. The electric opening and closing device characterized in that the clutch-off means for turning off the clutch after the brake device is turned off is provided between the brake lever and the clutch on the string-like body Switching device.   The switching device for an electric switching device according to claim 2, wherein the string-like body is a single string-like member, and the clutch-off means is a bending portion provided on the single string-like member. A switching device for an electric switchgear.   4. The switching device for an electric switchgear according to claim 3, wherein the one string-like member is before the string-like member is pulled when the pulling operation of the string-like member is released. A switching device for an electric switchgear, characterized in that a return elastic member for returning to the state is provided.   5. The switching device for an electric switchgear according to claim 3 or 4, further comprising a guide member disposed at the position of the bending portion, wherein the one string-like member is inserted into a guide hole of the guide member. The switching device for an electric switchgear characterized in that the guide hole is a straight long hole that is long in the bending direction of the bending portion.   The switching device for an electric opening and closing device according to claim 2, wherein the string-like body is provided with the pressing member via the brake lever, and does not reach the clutch; A second string-like member that does not pass through the brake lever and reaches the clutch is formed, and the first string-like member and the second string-like member include these first string-like members. The member and the second string-like member are slidable with respect to one another, the overlapping portion is provided, and the second string-like member is provided with a contact member, The first string-like member is brought into contact with the abutted member by the pulling operation of the first string-like member for causing the pressing force from the pressing member to act on the brake lever. To turn off the clutch on the member Contact member is provided in the pulling force for operating the switching device of the electric switchgear, wherein the overlapping portion of the slidable is characterized that it is the clutch-off means.   The switching device for an electric switchgear according to claim 6, wherein the first string-like member is provided with an extending portion extending from the brake lever to the clutch side, and the first string-like member is provided. A switching device for an electric switchgear, characterized in that a guide member for guiding the movement of the extended portion by the pulling operation is provided on the second string-like member.   The switching device for an electric switchgear according to claim 6 or 7, wherein the first string-like member includes the first string-like member when the pulling operation of the first string-like member is released. A switching device for an electric switchgear, characterized in that a return elastic member for returning to a state before being pulled is provided.   The switching device for an electric switchgear according to claim 2, wherein the string-like body is connected in series via an elastic member disposed between the brake lever and the clutch, and the elastic member. A string-like member is formed, and among these string-like members, the pressing member is provided on the string-like member on the brake lever side, and the elastic member serves as the clutch-off means. A switching device for an electric switchgear.   The switching device for an electric switchgear according to any one of claims 2 to 9, wherein the brake lever is formed of an elastic material, and the brake lever is elastically curved and deformed by a pressing force from the pressing member. A switching device for an electric switchgear.   11. The switching device for an electric switching device according to claim 1, wherein the clutch includes a first clutch member on the take-up shaft side and a second clutch member on the drive shaft side. One of the first clutch member and the second clutch member can be removably inserted into a recess formed in the other, and is a protrusion protruding in the axial direction of the drive shaft A switching device for an electric switchgear characterized in that is provided. The drive device of the electric switchgear having an opening / closing body that opens and closes by winding and unwinding the winding shaft, and a drive device for rotating the winding shaft to open and close the opening / closing body, A drive shaft connected to a member on the winding shaft side via a clutch, an electric motor for rotating the drive shaft, a brake device for braking the drive shaft, and switching the clutch on and off In the switching method of the electric opening and closing device, the opening and closing body can be opened and closed by manual operation by turning off the clutch with the operating means.
A brake-off step for turning off the brake device;
A clutch-off step for turning off the clutch after or simultaneously with the brake-off step;
The switching method of the electric switchgear characterized by including this.

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