JP2023088217A - Winding shaft mounting structure of electric shutter device - Google Patents

Abstract

To provide a winding shaft mounting structure of an electric shutter device capable of reducing repair costs in the event of a problem with the electric motor.SOLUTION: The winding shaft mounting structure of an electric shutter device is a device for attaching a winding shaft 31 with a shaft 31a at one end and a motor case 31b at the other end to an existing side plate 134 of an existing shutter case 130 provided with an existing case bracket 136 having multiple protrusions 136a. The motor case 31b is provided with a fitting portion 40, and an adapter 80 having a case attachment portion 81 fitted to the fitting portion 40 and a bracket attachment portion 82 engaged with the projection 136a of the existing case bracket 136 is interposed between the motor case 31b and the existing case bracket 136.SELECTED DRAWING: Figure 14

Description

The present invention relates to a winding shaft mounting structure for an electric shutter device.

Some electric shutter devices have an electric motor built into the winding shaft. In this type of electric shutter device, one side plate of the shutter case is provided with a shaft bracket, the other side plate is provided with a case bracket, and the winding shaft is attached between the side plates via these brackets. (See, for example, Patent Document 1).

JP 2018-138754 A

By the way, when a problem occurs in the electric motor of the electric shutter device, it is preferable to deal with the problem by replacing only the winding shaft including the electric motor. However, it is often the case that a considerable amount of time has passed since the installation of the electric shutter device when problems occur in the electric motor, so the supply of the electric motor that needs to be replaced has already ended. obtain. Under such circumstances, it is conceivable to replace the electric motor with a different model or an electric motor manufactured by a different manufacturer. However, if the model of the electric motor or the manufacturer of the electric motor is different, the case bracket already provided on the side plate and the motor case often do not match. Ultimately, even if only the electric motor fails, the entire electric shutter device, including the shutter case, must be replaced, resulting in problems such as high repair costs.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a winding shaft attachment structure for an electric shutter device that can reduce repair costs in the event that a problem occurs in the electric motor.

In order to achieve the above object, a winding shaft mounting structure for an electric shutter device according to the present invention has a shaft at one end and a motor case at the other end of the winding shaft. A winding shaft mounting structure of an electric shutter device for mounting on a side plate of a shutter case provided with a case bracket having a projection of , wherein the motor case is provided between the motor case and the case bracket An adapter having a case attachment portion to be attached and a bracket attachment portion that engages with the projection of the case bracket is interposed.

According to the present invention, by interposing the adapter between the case bracket attached to the side plate and the motor case, the winding shaft can be attached to the shutter case of the existing electric shutter device as it is. is possible, and it becomes possible to reduce the repair cost when a problem occurs in the electric motor.

1 is a longitudinal sectional view of an electric shutter device to which a winding shaft mounting structure according to an embodiment of the invention is applied; FIG. 2 is an exploded perspective view of the electric shutter device shown in FIG. 1 as seen from the outdoor side; FIG. 1 shows a shutter case applied to the electric shutter device shown in FIG. 1, (a) is an external perspective view, (b) is a perspective view showing one side plate constituting the shutter case, and (c) is a shutter case. It is a perspective view which shows the other of the side plate which comprises. FIG. 2 shows the constituent elements of the electric shutter device shown in FIG. 1, where (a) is a perspective view of a winding shaft with a winding roll arranged around it, and (b) is one end of the winding shaft. Fig. 2 is an enlarged perspective view of a main part of a motor case. FIG. 2 is a plan view of a main part showing a connecting portion between a side plate and a shaft of a take-up shaft in the electric shutter device shown in FIG. 1; 2 is an enlarged view showing an end face of a motor case in the winding shaft applied to the electric shutter device shown in FIG. 1; FIG. FIG. 2 shows a connecting portion between the side plate and the motor case of the winding shaft in the electric shutter device shown in FIG. Fig. 3 is a perspective view of a main part seen from the building side with the slat guide omitted; FIG. 2 is a perspective view of the connecting portion between the side plate and the motor case of the winding shaft in the electric shutter device shown in FIG. 1 as viewed from the outdoor side; 2 is a view of a side plate to which a motor case of a winding shaft is connected in the electric shutter device shown in FIG. 1, viewed from the inner surface side; FIG. FIG. 2 shows the winding shaft and the adapter of the electric shutter device shown in FIG. 1, where (a) is an exploded perspective view of the essential parts of the winding shaft motor case and the adapter, and (b) is the winding shaft motor case. Fig. 10 is a perspective view of a main part of a state in which the adapter is fitted to the; The existing shutter case applied to the existing electric shutter device is shown, (a) is an external perspective view, (b) is a perspective view showing one of the existing side plates constituting the existing shutter case, and (c) is the existing shutter case. FIG. 10 is a perspective view showing the other side of the existing side plate that constitutes the shutter case; The relationship between the existing case bracket attached to the existing shutter case and the adapter is shown. (a) is a view of the existing case bracket seen from the inner surface side of the side plate, and (b) is a view of the adapter on the side plate. FIG. 2C is a view of the adapter as viewed from the inner surface side, and FIG. 4C is a view of the state in which the adapter is engaged with the existing case bracket as viewed from the inner surface side of the side plate. FIG. 2 is a cross-sectional view of a main part of the electric shutter device shown in FIG. 1, showing a state in which an adapter is fitted to a fitting portion provided in a motor case of a winding shaft; 11 shows the existing side plate and winding shaft of the existing shutter case shown in FIG. 11, (a) is an exploded perspective view, and (b) is a state in which the winding shaft is attached to the existing case bracket of the existing group plate. It is a perspective view. FIG. 11 shows the existing side plate of the existing shutter case and the adapter attached to the motor case of the winding shaft shown in FIG. It is a perspective view of the attached state.

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a winding shaft mounting structure for an electric shutter device according to the present invention will now be described in detail with reference to the accompanying drawings. In the following description, for the sake of convenience, the terms "viewing direction" and "viewing direction" may be used. The prospective direction is a direction along the depth of the electric shutter device, as indicated by an arrow A in the figure. A surface along the prospective direction may be referred to as a prospective surface. In the case of an object such as an upper frame that extends along the horizontal direction, the viewing direction is a vertical direction orthogonal to the viewing direction. In the case of a vertical frame or the like that extends along the vertical direction, the horizontal direction perpendicular to the projection direction is called the viewing direction. A plane along the viewing direction may be referred to as a viewing plane.

1 and 2 show an electric shutter device to which a winding shaft attachment structure according to an embodiment of the present invention is applied. The electric shutter device exemplified here is attached to the upper part of a fitting frame 10 such as a sliding window. A shutter box 20 is formed in a portion above an upper frame 11 of a frame 10 of fittings to which an electric shutter device is attached. The shutter box 20 is for accommodating and supporting the electric shutter device. A horizontally long rectangular parallelepiped is constructed by installing a roof plate 21 .

The electric shutter device disposed in the shutter box 20 described above winds up and extends the shutter curtain 32 around a winding shaft 31 provided in the shutter case 30 . As shown in FIGS. 1 to 3, the shutter case 30 is constructed by providing side plates 34 on both sides of a back plate 33 so as to face each other. The upper side and the outdoor side between the left and right side plates 34 in the shutter case 30 are detachably covered with a front cover 35a. Shaft brackets 36 for supporting the winding shaft 31 are attached to portions of the side plates 34 facing each other. The winding shaft 31 incorporates an electric motor 37 and its control unit 38, and rotatably supports the winding roll 39 on its outer periphery. It can be rotated in any direction. The control unit 38 controls the rotation direction and rotation speed of the electric motor 37 based on commands given from a remote control or an indoor terminal device (not shown), which will be described later.

In the present embodiment, as shown in FIG. 4, a cylindrical shaft 31a protrudes from one end of a winding roll 39, and a resin-made columnar motor case 31b protrudes from the other end. A take-up shaft 31 is applied, and the take-up shaft 31 is attached between the left and right side plates 34 by connecting the shaft 31a and the motor case 31b to the shaft brackets 36, respectively. More specifically, the shaft bracket 36 is originally for supporting the shaft 31a, and as shown in FIGS. It has two side wall portions 36b provided on both sides of the horizontal bottom wall portion 36a, and a mounting wall portion 36c provided so as to bend from each side wall portion 36b in a direction substantially orthogonal to the horizontal bottom wall portion 36a. are configured. The shaft bracket 36 is attached to a substantially central portion of the inner surface 34a of the side plate 34 via the attachment wall portion 36c in a state in which the support opening 36d between the side wall portions 36b opens obliquely upward toward the outside of the room. be. As a method for attaching the shaft bracket 36 to the side plate 34, it may be welded by spot welding or the like, or may be attached by screws. The distance between the two side wall portions 36b is sized to accommodate the shaft 31a of the winding shaft 31. As shown in FIG. As shown in FIG. 5, the shaft 31a of the winding shaft 31 has a connecting pin 36e passing through the side wall portion 36b and the shaft 31a while the shaft 31a is arranged between the horizontal bottom wall portion 36a and the two side wall portions 36b. Therefore, it can be detachably attached to the shaft bracket 36 .

On the other hand, as shown in FIG. 4(b), the motor case 31b of the winding shaft 31 is provided with a fitting portion 40 that opens to the end surface and the peripheral surface. The fitting portion 40 includes two contact surfaces 41 facing each other with a mutual distance substantially equal to the width of the two side wall portions 36b of the shaft bracket 36, and one end portion of each contact surface 41. , and two open end faces 43 extending in directions away from each other from the other end edge of each contact face 41. As shown in FIG. 6, relief portions 44 are provided at meeting portions that are internal corners of the contact surface 41 and the closed end surface 42, respectively. The relief portion 44 is formed in a concave shape to prevent the contact surface 41 and the closed end surface 42 from coming into direct contact with each other. As shown in FIGS. 6 and 7, the motor case 31b having the fitting portion 40 abuts the side wall portions 36b of the shaft bracket 36 on the two abutment surfaces 41, respectively, and the end surfaces of the side wall portions 36b. can be fitted to the shaft bracket 36 in a state of contacting the closed end face 42 . Furthermore, it is possible to detachably attach the shaft bracket 36 by passing the connecting pin 36f through the motor case 31b and the side wall portion 36b.

A cable insertion hole 51 and a wire insertion hole 52 are provided in the end face of the motor case 31b. As shown in FIG. 9, the cable insertion hole 51 is provided with a power cable 61 for supplying power to the electric motor 37 and the control unit 38 built in the winding shaft 31, a connector 61a thereof, and an external device such as an indoor terminal device. It is for inserting cables such as the terminal communication cable 62 connecting between the device and the control unit 38 inside and outside the motor case 31b. The wire insertion hole 52 is for inserting an operation wire 63, which is pulled when manually operating the shutter curtain 32 by canceling the braking state of the winding roll 39 with respect to the winding shaft 31, inside and outside the motor case 31b. , is provided only in a substantially central portion of the motor case 31b.

As shown in FIG. 1, the shutter curtain 32 is constructed by interconnecting a plurality of slats 32a, one end of which is connected to the take-up roll 39. As shown in FIG. When the take-up roll 39 is rotated with respect to the take-up shaft 31 by driving the electric motor 37 , the shutter curtain 32 can be wound around the take-up roll 39 and let out. As shown in FIGS. 1 and 2, the left and right vertical frames 12 are provided with guide rails 13 on the outdoor side. The shutter curtain 32 unwound from the take-up roll 39 is in a state in which both edge portions are inserted into the guide rails 13 and can close the opening of the frame 10 . As shown in FIG. 1, there is a gap between the outer peripheral surface of the take-up roll 39 and the back plate 33 and the front cover 35a. A winding space 32A is secured so as not to come into contact with 33 and the front cover 35a. Further, a mutual gap larger than that of the shutter curtain 32 is ensured between the side plates 34 of the shutter case 30, so that the shutter curtain 32 wound on the winding roll 39 does not come into contact with the inner surface 34a of the side plate 34. Nor. 2 denotes a side cover that covers the outer surface of the portion of the side plate 34 that protrudes to the outside of the vehicle from the vertical frame 12. As shown in FIG.

As shown in FIG. 8, one side plate 34 that supports the motor case 31b (in this embodiment, the side plate on the right side when viewed from the outside of the room) has an inner surface 34a facing the other side plate 34 with three Slat guides 70A, 70B, and 70C are arranged side by side in the circumferential direction so as to surround the winding shaft 31. As shown in FIG. These slat guides 70A, 70B, and 70C are arranged in the gap between the shutter curtain 32 and the side plate 34 to form an accommodation space (not shown) between the side plate 34 and the shutter curtain 32. As shown in FIG. As shown in FIG. 9, these housing spaces house a power cable 61, its connector 61a, and a terminal communication cable 62, which are pulled out from the cable insertion hole 51 of the motor case 31b. 63 middle part is accommodated. Further, the slat guide 70B on the outdoor side accommodates electronic parts 64 such as communication equipment for connecting the control unit 38 to external equipment such as a remote controller and indoor terminal equipment.

In the electric shutter device configured as described above, if the operation is performed from inside the building through a remote controller or an indoor terminal device (not shown), the electric motor 37 is operated through the electronic component 64 and the control unit 38 in the direction and rotation speed corresponding to the operation. Rotate. As a result, the shutter curtain 32 is wound up and unwound from the winding roll 39 of the winding shaft 31, and the opening of the frame 10 is appropriately opened and closed. During these operations, the shutter curtain 32 moves inside the shutter case 30 . However, the power cable 61, the terminal communication cable 62, the operation wire 63, and the electronic component 64 are all arranged in the accommodation space between the slat guides 70A, 70B, 70C and the side plate . Therefore, there is no concern that the shutter curtain 32 will come into contact with the cables 61 and 62, the operation wire 63, and the electronic component 64. FIG.

Further, since the shaft bracket 36 can be used in common for the shaft 31a of the winding shaft 31 and the motor case 31b, the number of parts does not increase, which is advantageous in terms of manufacturing cost. Moreover, since the fitting portion 40 of the motor case 31b and the shaft bracket 36 are fitted to each other, the winding shaft 31 and the side plate 34 can be attached more firmly, and durability can be improved. points are also advantageous. Further, relief portions 44 are provided at meeting portions that are internal corners of the contact surface 41 and the closed end surface 42 in the fitting portion 40 . Therefore, although the side wall portion 36b of the shaft bracket 36 is pressed against the contact surface 41 as the take-up shaft 31 and the take-up roll 39 rotate relative to each other, the contact surface 41 and the closed end surface 42 do not contact each other. This prevents stress from concentrating on the joint. As a result, even if the electric shutter device is used for a long period of time, the motor case 31b will not be damaged.

As shown in FIG. 10, an adapter 80 is prepared for this electric shutter device. As shown in FIG. 11, the adapter 80 is necessary when attaching the winding shaft 31 to the shutter case 130 of an existing electric shutter device having a case bracket 136 attached to one side plate 134 as a replacement. It becomes. The other side plate 134 of the shutter case 130 is attached with a shaft bracket for supporting the shaft 31a, for example, the same shaft bracket 36 as in the electric shutter device described above. In the following, the constituent elements of the existing electric shutter device will also be described as necessary, but for the purpose of clarifying the differences from the constituent elements of the electric shutter device described above, the configuration of the existing electric shutter device Elements may be given the term "existing".

The existing case bracket 136 was used exclusively for attaching the existing motor case of the existing winding shaft (not shown) to be replaced to the existing side plate 134, as shown in FIGS. , and has projections 136a at a plurality of positions (six positions in the present embodiment) at equal intervals on the same circumference at the periphery. The projection 136a has a substantially semi-arc cylindrical shape that protrudes toward the center of the disc, and protrudes from the inner surface 134a of the existing side plate 134 in a substantially perpendicular direction. A peripheral wall portion 136b is provided on the peripheral edge portion of the existing case bracket 136 between the protrusions 136a so as to protrude in the same direction as the protrusions 136a. The projection dimension of the peripheral wall portion 136b is about half the projection dimension of the projection 136a.

As shown in FIG. 10, the adapter 80 integrates a case attachment portion 81 that can be fitted into the fitting portion 40 of the motor case 31b and a bracket attachment portion 82 that can be engaged with the existing case bracket 136. It is molded. The case mounting portion 81 includes a rectangular base wall portion 81a and two side wall portions 81b extending substantially parallel to each other in the same direction from both side edges of the base wall portion 81a. be. As shown in FIG. 13, the two side wall portions 81b abut on the two abutment surfaces 41 when arranged in the fitting portion 40 of the motor case 31b, and the extended ends protrude from the end surface of the motor case 31b. It is formed to A wire insertion notch 81c is formed in a portion of the base wall 81a facing the wire insertion hole 52 of the motor case 31b. As shown in FIGS. 10 to 12, the bracket mounting portion 82 is bent and extended from each side wall portion 81b in directions substantially parallel to the base wall portion 81a and away from each other. It is configured by providing a wall portion 82a. Each of the two engaging wall portions 82a has an engaging notch portion 82b at each tip, and these engaging notch portions 82b are engaged with the peripheral surface of the projection 136a provided on the existing case bracket 136. It can be inserted between the two opposing projections 136a in a state in which the distal end portion is engaged with the inner peripheral surface of the peripheral wall portion 136b. In order to attach the adapter 80 to the motor case 31b, a connecting pin (not shown) may be passed through the motor case 31b and the side wall portion 81b while the case attachment portion 81 is fitted in the fitting portion 40. FIG.

As shown in FIGS. 14 and 15, the winding shaft 31 with the adapter 80 attached to the motor case 31b engages the bracket attachment portion 82 of the adapter 80 with the existing case bracket 136, and from this state, the other When the shaft 31 a at the end of the shaft 31 a is attached to the existing shaft bracket 36 , the shutter case 130 is attached between the existing side plates 134 while the relative movement thereof is restricted with respect to the existing shutter case 130 . Therefore, when a problem occurs only in the existing electric motor of the existing electric shutter device, by applying the adapter 80 described above, only the existing winding shaft including the existing electric motor can be replaced with the winding shaft 31 described above. , and the existing shutter case 130 can be used as it is, so that the repair cost can be reduced.

In the above-described embodiment, the motor case 31b is provided with the fitting portion 40 into which the shaft bracket 36 can be fitted. Since only the shaft brackets 36 are provided on both sides of the side plate 34, the manufacturing work becomes extremely easy, and the manufacturing cost can be reduced by sharing the parts. However, the motor case 31b does not need to be provided with the fitting portion 40 into which the shaft bracket 36 can be fitted, nor does it necessarily need to be concave. For example, the case attachment portion of the adapter may be configured to be attached so as to sandwich the motor case. Furthermore, in the case where the recessed fitting portion 40 is provided in the above-described embodiment, the escape portion 44 is provided so as to be recessed at the meeting portion between the closed end surface 42 and the contact surface 41 . Alternatively, even when the electric motor 37 is driven with the adapter 80 fitted, the motor case 31b is prevented from being damaged due to stress concentration at the meeting portion between the closed end surface 42 and the contact surface 41. However, the invention is not necessarily limited to this.

As described above, in the winding shaft mounting structure for an electric shutter device according to the present invention, the other end of the winding shaft having the shaft at one end and the motor case at the other end is provided with a plurality of protrusions. A winding shaft mounting structure for an electric shutter device for mounting on a side plate of a shutter case provided with a case bracket having a An adapter having a case attachment portion and a bracket attachment portion that engages with the projection of the case bracket is interposed.
According to this invention, by interposing the adapter between the case bracket attached to the side plate and the motor case, the winding shaft can be attached to the shutter case of the existing electric shutter device as it is. is possible, and it becomes possible to reduce the repair cost when a problem occurs in the electric motor.

Further, according to the present invention, in the winding shaft mounting structure for the electric shutter device described above, the motor case is provided with a fitting portion into which a shaft bracket for supporting the shaft can be fitted, and the adapter is provided with a fitting portion. The case mounting portion is characterized by having a shape that allows it to be fitted into the fitting portion.
According to this invention, since the shaft bracket can be applied when the motor case is attached to the side plate, when the winding shaft is attached to the shutter case, it is sufficient to attach the shaft bracket to each side plate. Not only is the work extremely easy, but it is also possible to reduce the manufacturing cost by sharing parts.

Further, according to the present invention, in the winding shaft mounting structure for the electric shutter device described above, the protrusions of the case bracket are provided at positions spaced apart from each other on the same circumference, and the bracket of the adapter The mounting portion can be inserted between the plurality of projections, and engages with the projections when inserted between the plurality of projections to allow relative rotation along the circumference with respect to the case bracket. is provided with an engaging wall portion for regulating the
According to the present invention, the relative rotation of the winding shaft with respect to the side plate can be restricted only by inserting the bracket attachment portion of the adapter between the plurality of projections in a state in which the adapter is attached to the motor case in advance. This is advantageous in terms of workability when attaching the motor case to the case bracket of the side plate.

Further, according to the present invention, in the winding shaft mounting structure for the electric shutter device described above, the case mounting portion of the adapter extends in the same direction from the rectangular base wall portion and both side edge portions of the base wall portion. the bracket mounting portion of the adapter has two engaging wall portions extending away from each other from the extending edges of the two side wall portions; The engaging wall portion of the motor case is provided with an engaging notch portion that engages with the projection of the case bracket, and the fitting portion of the motor case includes two abutments facing each other abutting on the outer surfaces of the two side wall portions. It has a contact surface, and has a concave shape in which the adapter is fitted between the two contact surfaces. One end of the case mounting portion is open to the peripheral surface of the motor case. On the other hand, the other end is closed, and relief portions are provided so as to be recessed at the meeting portions of the closed end surface of the fitting portion and the contact surface.
According to this invention, since the motor case and the adapter are joined via the two side walls, a large joint area can be secured between the two, which is advantageous in terms of strength. Moreover, since relief portions are provided at both internal corners of the closed end surface of the motor case, it is possible to prevent damage to the motor case due to concentration of stress.

30 shutter case, 31 winding shaft, 31a shaft, 31b motor case, 34 side plate, 34a inner surface, 36 shaft bracket, 37 electric motor, 40 fitting portion, 41 contact surface, 42 closed end surface, 44 relief portion, 80 adapter 81 case mounting portion 81a base wall portion 81b side wall portion 82 bracket mounting portion 82a engagement wall portion 82b engagement notch portion 130 existing shutter case 134 existing side plate 136 existing case bracket 136a protrude

Claims (4)

An electric shutter device for attaching the other end of a winding shaft having a shaft at one end and a motor case at the other end to a side plate of a shutter case provided with a case bracket having a plurality of protrusions. The winding shaft mounting structure of
An adapter having a case attachment portion attached to the motor case and a bracket attachment portion engaged with a projection of the case bracket is interposed between the motor case and the case bracket. A winding shaft mounting structure for an electric shutter device. The motor case is provided with a fitting portion into which a shaft bracket for supporting the shaft can be fitted,
2. The winding shaft mounting structure for an electric shutter device according to claim 1, wherein the case mounting portion of the adapter has a shape that allows it to be fitted into the fitting portion. The protrusions of the case bracket are provided at positions spaced apart from each other on the same circumference,
The bracket mounting portion of the adapter can be inserted between the plurality of protrusions, and when it is inserted between the plurality of protrusions, it engages with the protrusions so that it can move along the circumference of the case bracket. 2. The winding shaft mounting structure for an electric shutter device according to claim 1, further comprising an engaging wall portion for restricting relative rotation in the direction. The case mounting portion of the adapter has a rectangular base wall portion and two side wall portions extending in the same direction from both side edges of the base wall portion,
The bracket mounting portion of the adapter has two engaging wall portions extending in directions away from each other from the extending edge portions of the two side wall portions. An engagement notch is provided to engage the projection,
The fitting portion of the motor case has two opposing abutment surfaces that abut against the outer surfaces of the two side wall portions, and has a concave shape into which the adapter is fitted between the two abutment surfaces. and
one end of the case mounting portion is open to the peripheral surface of the motor case, and the other end is closed;
3. The take-up shaft for an electric shutter device according to claim 2, wherein relief portions are provided so as to form recesses at the meeting portions of the closed end surface of the fitting portion and the contact surface. mounting structure.

Images