Motor fixing device for electric blinds and electric blinds

Abstract

To appropriately share a motor mount irrespective of the number of motors included in an electric blind.SOLUTION: A motor fixing device including one or more motors that rotate a drive shaft to open / close a shielding material in a head box, comprises: a motor mount that has a plurality of storage parts for supportably storing the motors and can fix the motors stored in the storage parts to the head box; and a spacer that can be engaged with the storage parts, has a prescribed size or more in an axial direction of the drive shaft, and protects the motor mount from rotation loads of the motors. The motor mount enables fixing of the motors to the head box in a state where the spacer is stored in a storage part where the motors are not stored out of the plurality of storage parts.SELECTED DRAWING: Figure 13

Description

Technical Field

[0001] The present invention relates to a motor fixing device for an electric blind and an electric blind.

Background Art

[0002] Conventionally, a blind that opens and closes a shielding material electrically using a motor has been known.

[0003] For example, in Patent Document 1 below, an electric blind is disclosed that includes a head box, a first motor, a second motor, and a vibration isolator (motor mount), and is configured to be fixed in the head box with the first motor and the second motor housed in the vibration isolator.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, from the perspective of parts management, there is a desire to make the motor mounts common regardless of the number of motors provided in the electric blind. Specifically, it is desired that a motor mount in which a plurality of motor accommodation spaces are formed can be applied to an electric blind having a specification with one motor as well as an electric blind having a plurality of motors.

[0006] However, when operating the electric blind with motors not housed in all of the plurality of motor accommodation spaces, there is a problem that problems such as deformation, breakage, and generation of abnormal noise of the motor mount may occur.

[0007] In view of the above circumstances, the object of the present invention is to provide a motor fixing device for electric blinds that can suitably standardize the motor mount regardless of the number of motors provided in the electric blinds, and an electric blind having said motor fixing device. [Means for solving the problem]

[0008] To achieve the above objective, a motor fixing device for an electric blind according to one embodiment of the present invention is a motor fixing device for an electric blind that includes one or more motors in a headbox that rotate a drive shaft to open and close a shielding material, and comprises a motor mount having a plurality of housing sections that support and house the motors, and the motors housed in the housing sections can be fixed to the headbox, and a spacer that can be fitted into the housing sections, has a size of a predetermined or greater in the axial direction of the drive shaft, and protects the motor mount from the rotational load of the motor. The motor mount can fix the motor to the headbox with the spacer housed in one of the plurality of housing sections that does not house the motor.

[0009] This configuration prevents deformation, damage, and noise generation of the motor mount by fitting a spacer into the housing section where the motor is not housed. In particular, using a spacer with a size greater than a predetermined size in the axial direction prevents the spacer housed in the housing section from shifting to an angle with respect to the axis, thus providing a more advantageous effect in preventing the above-mentioned problems. As a result, the motor mount can be suitably standardized regardless of the number of motors in the electric blind.

[0010] The axial size of the spacer may be equal to or greater than that of the housing portion. Alternatively, the axial size of the spacer may be about one-third or one-half of that of the housing portion.

[0011] The motor mount may have a plurality of insertion portions that communicate with the housing portion so that the output shaft of the motor can be inserted through them. In this case, the spacer may have a base portion that is housed in the housing portion and a projection portion that protrudes from the base portion in the axial direction so as to be insertable into the insertion portions, and the spacer may be configured such that when the base portion is rotated in the housing state, a part of the projection portion is locked to the motor mount.

[0012] With this configuration, the spacer can be attached to the motor mount with a simple operation: just place the spacer in the housing and rotate it.

[0013] The insertion portion may be formed in substantially the same shape as the protruding portion. In this case, the protruding portion may have a locking portion (retaining projection) that protrudes in the circumferential direction in the axial direction so that it can be locked into the insertion portion by being rotated in the housing state.

[0014] The motor fixing device may further include a plate material positioned on the outside of the surface where the insertion portion is formed, through which a screw member can be inserted from the outside of the motor mount and screwed into the motor via the insertion portion, and which is partially open to allow the output shaft and the protruding portion to be inserted.

[0015] With this configuration, the load on the motor mount due to the motor's rotation is borne by the plate material, screw members, and spacers, thus reducing damage to the insertion part of the motor mount compared to when there is no plate material. As a result, it becomes easier to use a lower-hardness material for the motor mount, which suppresses vibrations caused by the motor's rotation and reduces operating noise.

[0016] The spacer may be formed with a hollow interior, and the protruding portion may have an operating part that allows the spacer to be rotated by a jig inserted from the inside.

[0017] According to this configuration, even when the spacer is accommodated in the accommodating portion, a rotation operation can be easily performed. This is particularly advantageous when the axial size of the spacer is substantially equal to that of the accommodating portion.

[0018] The protruding portion may have an operation portion that can rotate the spacer from the outside of the motor mount and protrudes in the axial direction.

[0019] According to this configuration, the rotation operation of the spacer can be easily performed without using a jig.

[0020] The base portion may have an operation portion that can rotate the spacer at a portion that does not fit into the accommodating portion in the accommodating state.

[0021] According to this configuration, an operation portion that can easily perform a rotation operation even when the spacer is accommodated in the accommodating portion can be realized with a simpler configuration.

[0022] The base portion may have a convex portion (rotation prevention protrusion) that protrudes in the axial direction from the base portion. In this case, the convex portion abuts against the inside of the surface where the insertion portion is formed in a pressing state during the rotation operation of the spacer, and after a predetermined amount of rotation of the spacer, is locked to a part of the insertion portion, thereby restricting the rotation of the spacer in the accommodating state.

[0023] According to this configuration, it is possible to prevent the spacer attached to the motor mount from accidentally coming off.

[0024] The electric blind according to another aspect of the present invention includes a head box and a shielding material having one end supported by the head box and hanging down so as to be openable and closable from the head box. The head box has, inside thereof, one or more motors that rotate a drive shaft to open and close the shielding material, and a motor fixing device for the electric blind.

Effects of the Invention

[0025] As described above, according to the present invention, the motor mounts can be preferably made common regardless of the number of motors provided in the electric blind. However, the effects are not intended to limit the present invention.

Brief Description of the Drawings

[0026] [Figure 1] It is a front view of an electric blind using one motor according to the first embodiment of the present invention. [Figure 2] It is a front view of an electric blind using two motors according to the first embodiment of the present invention. [Figure 3] It is a plan view near the end of the head box of the electric blind in FIG. 1. [Figure 4] It is a sectional view taken along the line A-A in FIG. 3. [Figure 5] It is a plan view near the end of the head box of the electric blind in FIG. 2. [Figure 6] It is a sectional view taken along the line B-B in FIG. 5. [Figure 7] It is a perspective view of the motor mount and one end side of the motor mount spacer of the electric blind in FIG. 1. [Figure 8] It is a perspective view of the other end side of the motor mount and the motor mount spacer. [Figure 9] It is a sectional view showing the procedure for attaching the motor mount spacer to the motor mount. [Figure 10] It is a side view showing the state where the motor mount spacer is inserted into the motor mount. [Figure 11] It is a partial horizontal sectional view showing the state where the motor mount spacer is inserted into the motor mount. [Figure 12] It is a side view showing the state where the motor mount spacer is rotated and fixed. [Figure 13] It is a partial horizontal sectional view showing the state where the motor mount spacer is rotated and fixed. [Figure 14] It is an exploded perspective view of the motor mount and the motor mount spacer according to the second embodiment of the present invention. [Figure 15] Figure 14 is a side view of the motor mount and motor mount spacer. [Figure 16] This is a perspective view of a motor mount and motor mount spacer according to a third embodiment of the present invention. [Modes for carrying out the invention]

[0027] Embodiments of the present invention will be described below with reference to the drawings.

[0028] <First Embodiment> First, a first embodiment of the present invention will be described.

[0029] [Blind configuration] Figure 1 is a front view of an electric blind using one motor according to the first embodiment of the present invention. Figure 2 is a front view of an electric blind using two motors. Figure 3 is a plan view of the area near the headbox end of the electric blind in Figure 1. Figure 5 is a plan view of the area near the headbox end of the electric blind in Figure 2, and Figure 6 is a cross-sectional view of BB in Figure 5.

[0030] As shown in Figure 1, the electric blind 100 using one motor according to this embodiment has a headbox 1 as a support member, a shielding material 2, and a bottom rail 3.

[0031] The headbox 1 is installed in an opening such as a window frame or bay window of a building. The shielding material 2 is supported at its upper end by the headbox 1 and hangs down so as to be able to move up and down. The bottom rail 3 is provided at the lower end of the shielding material 2.

[0032] The headbox 1 has a horizontally elongated rectangular parallelepiped shape and is fixed to the opening with screws or the like via a bracket (not shown).

[0033] The shielding material 2 is, for example, a pleated screen formed by folding multiple pleats in an accordion-like manner in the Y direction of the figure so that they can be folded and unfolded. The fabric of the shielding material 2 is made of, for example, a highly light-blocking material that does not transmit light or a see-through material that can transmit light.

[0034] The shielding material 2 has holes for inserting the lifting cord, and the lifting cord 4, which hangs down from the headbox 1, is inserted through these holes. The upper end of the lifting cord 4 is connected to the lifting drum 13 within the headbox 1 so that it can be wound up and unwound, and the other end of the lifting cord 4 is connected to the bottom rail 3.

[0035] As shown in Figures 1 and 3, the headbox 1 contains a drive shaft 10, a motor 11, a motor mount (motor fixing device) 12, multiple lifting drums 13, a control unit 14, and a power supply unit 15. A light receiving unit 16 is also provided at, for example, the right end of the headbox 1. The lifting drums 13 are housed in a drum case 18.

[0036] Furthermore, headbox caps 1a are attached to both end faces of the headbox 1, and a headbox cover 1b (see Figure 4) is provided on the top surface of the headbox 1.

[0037] The motor 11 serves as the drive source for rotating the lifting drum 13. The motor 11 is fixed to the motor mount 12. The drive shaft 10 connects the multiple lifting drums 13 together and transmits the driving force of the motor 11 to the lifting drums 13, rotating together with the lifting drums 13. More specifically, as shown in Figure 3, the motor output shaft 21 at the end of the motor 11 is connected to the drive shaft 10 via a joint 22.

[0038] The control unit 14 detects the amount of rotation of the drive shaft 10 and controls the drive of the motor 11 based on that amount of rotation.

[0039] The rotation of the lifting drum 13 causes the lifting cord 4 wound around the lifting drum 13 to move up and down, which in turn causes the bottom rail 3 to move up and down, allowing the shielding material 2 to be raised and lowered (unfolded and folded).

[0040] The power supply unit 15 supplies power to each part of the headbox 1. The light receiving unit 16 receives remote control signals from a remote controller (not shown) and transmits them to the control unit 14.

[0041] As shown in Figure 2, the electric blind 200 using two motors 11 has a first shading material 6 and a second shading material 7, whereas the electric blind 100 has only one shading material 2. The first shading material 6 and the second shading material 7 are both, for example, pleated screens, but are not limited to these.

[0042] The upper end of the first shielding material 6 is connected to the headbox 1, and the lower end of the first shielding material 6 is connected to the intermediate bar 5. The upper end of the second shielding material 7 is connected to the intermediate bar 5, and the lower end of the second shielding material 7 is connected to the bottom rail 3.

[0043] As shown in Figures 2, 5, and 6, the electric blind 200 has two motors 11a and 11b, corresponding to the first shielding material 6 and the second shielding material 7. The motor output shaft 21a at the end of motor 11a is connected to the drive shaft 10a via a joint 22a, and the motor output shaft 21b at the end of motor 11b is connected to the drive shaft 10b via a joint 22b.

[0044] The drive shaft 10a connects multiple lifting drums 13 around which the lifting cord 4 is wound, transmits the driving force of the motor 11a to the lifting drums 13, and rotates together with the lifting drums 13. The drive shaft 10b connects multiple dimming drums 17 around which the dimming cord 8 is wound, transmits the driving force of the motor 11b to the dimming drums 17, and rotates together with the dimming drums 17.

[0045] The rotation of the dimming drum 17 causes the dimming cord 8 wound around the dimming drum 17 to move up and down, which in turn causes the intermediate bar 5 to move up and down, thereby enabling the first shielding material 6 to move up and down (unfold and fold). Similarly, the rotation of the lifting drum 13 causes the lifting cord 4 wound around the lifting drum 13 to move up and down, which in turn causes the bottom rail 3 to move up and down, thereby enabling the second shielding material 7 to move up and down (unfold and fold).

[0046] [Motor Mount Details] Next, the motor mount 12 will be described in detail. Figure 4 is a cross-sectional view of AA in Figure 3. Figure 7 is a perspective view of the motor mount 12 and motor mount spacer 23 of the electric blind 100 in Figure 1, viewed from one end, and Figure 8 is a perspective view of the motor mount 12 and motor mount spacer 23, viewed from the other end. In Figures 7 and 8, (A) shows an exploded view of the motor mount 12 and motor mount spacer 23, and (B) shows an assembled view of both.

[0047] As shown in these figures, the motor mount 12 has two housing sections 43 of the same size and shape that can support and house the motor 11. The motor 11 is fixed to the headbox 1 by being housed in these housing sections 43. The number of housing sections 43 is not limited to two, but may be three or more.

[0048] In the electric blind 200 that uses two motors 11 as shown in Figures 2, 5, and 6, the motors 11a and 11b are housed in the two housing sections 43 of the motor mount 12, respectively.

[0049] On the other hand, in an electric blind 100 that uses one motor 11, the motor 11 is housed in one of the two housing sections 43, and the motor mount spacer 23 is fitted and housed in the other housing section 43 that does not house the motor 11. The motor mount 12 fixes the motor 11 to the headbox 1 in this state.

[0050] Conventionally, when an electric blind is operated with motors housed in only a portion of the multiple motor housings, there has been a problem that the rotational load of the motors can cause problems such as deformation or damage to the motor mounts and the generation of abnormal noises. The motor mount spacer 23 according to this embodiment is provided to protect the motor mount 12 from the rotational load of the motor 11.

[0051] As shown in Figures 3, 7, and 8, the motor mount spacer 23 has a size approximately equal to the length of the housing portion 43 in the axial direction of the drive shaft 10 (direction X in each figure).

[0052] As shown in Figure 7, the motor mount 12 has two through holes 41 (insertion portions) at its axial (X-direction) end that communicate with the housing portion 43. The motor output shaft 21 of the motor 11 can be inserted through one of the two through holes 41.

[0053] Furthermore, as shown in Figures 7 and 8, the motor mount spacer 23 has a cylindrical base portion 30 that is housed in the housing portion 43, and a protruding portion 31 that protrudes from the axial (X-direction) end of the base portion 30.

[0054] The protruding portion 31 is inserted into the insertion hole 41 through which the motor output shaft 21 is not inserted, and when the base portion 30 is rotated while housed in the housing portion 43, a part of it is locked to the motor mount 12.

[0055] Specifically, the protruding portion 31 has, for example, three retaining projections (locking portions) 33 that protrude from the cylindrical body in the circumferential direction in the axial direction (X direction), and the insertion hole 41 is formed in substantially the same shape as the protruding portion 31 and has three locking grooves 42 corresponding to the retaining projections 33.

[0056] When the base portion 30 is housed in the housing portion 43 and the retaining projection 33 is inserted through the insertion hole 41, the protruding portion 31 is locked into the insertion hole 41.

[0057] Furthermore, the base portion 30 has, for example, three anti-rotation projections (protrusions) 34 that protrude in the axial direction (X direction) from the axial (X direction) end face of the base portion 30. As will be described later, when the motor mount spacer 23 is rotated, these anti-rotation projections 34 engage with the locking grooves 42, which are part of the insertion hole 41, thereby restricting the rotation of the motor mount spacer 23 in its housing state. These anti-rotation projections 34 prevent the motor mount spacer 23 attached to the motor mount 12 from coming off unintentionally.

[0058] Furthermore, the base portion 30 is formed to be hollow inside, and the protruding portion 31 has an operating portion 32 at its end in the direction of protrusion, which can be rotated by a jig (described later) inserted from inside the base portion 30, for example, in the shape of a cross hole.

[0059] As shown in Figures 3 to 6, a plate material 24 is provided on the outside of the surface of the motor mount 12 where the through hole 41 is formed. The plate material 24 is partially open so that a screw member S, which is inserted through the through hole 41 from the outside of the motor mount 12 and screwed onto the motor 11, can be inserted through it, as well as so that the motor output shaft 21 of the motor 11 and the protruding portion 31 of the motor mount spacer 23 can be inserted through it. Specifically, the plate material 24 has two openings of the same shape as the through hole 41. Note that the plate material 24 is not shown in Figures 7 and 8.

[0060] As a result, the load on the motor mount 12 caused by the rotation of the motor 11 is borne by the plate material 24, the screw member S, and the motor mount spacer 23, thus reducing damage to the insertion hole 41 (locking groove 42) of the motor mount 12 compared to when the plate material 24 is not present. Consequently, it becomes easier to make the motor mount 12 material with lower hardness, which suppresses vibrations caused by the rotation of the motor 11 and reduces operating noise.

[0061] [Motor Mount Spacer Installation Procedure] Next, the procedure for attaching the motor mount spacer 23 to the motor mount 12 will be described. Figure 9 is a cross-sectional view showing the procedure for attaching the motor mount spacer 23 to the motor mount 12. Figures 10 and 11 are a side view and a partial horizontal cross-sectional view showing the motor mount spacer 23 inserted into the motor mount 12. Figures 12 and 13 are a side view and a partial horizontal cross-sectional view showing the motor mount spacer 23 rotated and fixed in place.

[0062] First, as shown in Figure 9(A), insert a jig J, such as a Phillips screwdriver, into the base 30 of the motor mount spacer 23, and with the tip of the jig J engaged with the operating part 32, move the motor mount spacer 23 together with the jig J in the axial direction (direction of the left arrow in the figure), align the retaining projection 33 with the locking groove 42 of the insertion hole 41, pass the protruding part 31 through the insertion hole 41, and insert the base 30 into the housing part 43 of the motor mount 12 (as shown in Figures 10 and 11).

[0063] At this time, as shown in Figure (B), the anti-rotation projection 34 comes into contact with the inner surface of the surface where the insertion hole 41 of the motor mount 12 is formed in a pressing state (arrow on the right in the figure), thereby temporarily deforming the inner surface.

[0064] From this state, as shown in Figure (C), when the jig J is rotated by a predetermined amount (approximately 60° in this embodiment) in the direction of the arrow, the anti-rotation projection 34 engages with the locking groove 42, which is part of the insertion hole 41, thereby restricting the rotation of the motor mount spacer 23 in its housed state. At the same time, the rotation causes the retaining projection 33 to rotate and contact the end face of the motor mount 12 via the plate material 24, so that the protruding portion 31 is fixed in the insertion hole 41 (as shown in Figures 12 and 13).

[0065] In this way, the motor mount spacer 23 can be attached to the motor mount 12 with a simple operation of placing the motor mount spacer 23 into the housing section 43 and rotating it with the jig J.

[0066] [summary] As described above, according to this embodiment, by housing the motor mount spacer 23 in a fitted state in the housing section 43 where the motor 11 is not housed, deformation, damage, and the generation of abnormal noise of the motor mount 12 can be prevented. In particular, by using a spacer having a size greater than a predetermined size in the axial direction, it is possible to prevent the motor mount spacer 23 housed in the housing section 43 from shifting in such a way that it causes an angle of deviation with respect to the axis, thus providing a more advantageous effect in preventing the above-mentioned problems. As a result, the motor mount 12 can be suitably standardized regardless of the number of motors 11 provided in the electric blind 100.

[0067] <Second Embodiment> Next, a second embodiment of the present invention will be described. In this embodiment and subsequent embodiments, the same reference numerals are used to denote parts having the same function as in the first embodiment.

[0068] Figure 14 is an exploded perspective view of the motor mount 12 and motor mount spacer 23 according to this embodiment. Figure 15 is a side view of the motor mount 12 and motor mount spacer 23 shown in Figure 14. Figure 15(A) shows the motor mount spacer 23 inserted into the motor mount 12, and Figure 15(B) shows the motor mount spacer 23 fixed to the motor mount 12. Note that the plate material 24 is omitted from the illustration in Figure 14.

[0069] In the first embodiment described above, the operating part 32 was formed in a shape (cross-shaped hole) that could engage with the jig J from inside the motor mount spacer 23. In contrast, in this embodiment, as shown in Figures 14 and 15, the operating part 32 is formed as a flat knob that protrudes from the protruding part 31 in the axial direction (X direction). The user can rotate the motor mount spacer 23 from the outside of the motor mount 12 by holding the operating part 32 between their fingers.

[0070] Specifically, as shown in Figure 15(A), the base 30 of the motor mount spacer 23 is fitted into the housing 43, the retaining projection 33 is aligned with the locking groove 42 of the insertion hole 41, the protruding portion 31 including the operating portion 32 is passed through the insertion hole 41, and the base 30 is inserted into the housing 43 of the motor mount 12.

[0071] From this state, as shown in Figure (B), by rotating the operating part 32 by approximately 60°, the anti-rotation projection 34 engages with the locking groove 42, which is part of the insertion hole 41, and the retaining projection 33 comes into contact with the end face of the motor mount 12, thereby fixing the protruding part 31 in the insertion hole 41.

[0072] Thus, according to this embodiment, the motor mount spacer 23 can be easily attached to the motor mount 12 without using a jig J.

[0073] <Third Embodiment> Next, a third embodiment of the present invention will be described. Figure 16 is a perspective view of the motor mount 12 and motor mount spacer 23 according to this embodiment. Figure (A) shows an exploded perspective view of both, and Figure (B) shows an assembled view.

[0074] As shown in the figure, in this embodiment, an operating part 32 that allows the motor mount spacer 23 to be rotated is formed on the part of the base 30 that does not fit into the housing part 43 in the above housing state (the end opposite to the protruding part 31).

[0075] The operating portion 32 is formed, for example, in a cylindrical shape with approximately the same diameter as the base portion 30. An axial groove may be formed around the operating portion 32 to prevent the user's fingers from slipping during rotational operation. Alternatively, the operating portion 32 may be in the shape of a plate-like knob, as in the second embodiment described above, rather than being cylindrical.

[0076] The user can attach the motor mount spacer 23 to the motor mount 12 in the same manner as in each of the embodiments described above by holding the operating part 32, passing the protruding part 31 through the insertion hole 41, housing the base part 30 in the housing part 43, and rotating the operating part 32.

[0077] Thus, according to this embodiment, the operating unit 32, which allows for easy rotation even when the motor mount spacer 23 is housed in the housing, can be realized with a simpler configuration.

[0078] [Differentiation] The present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit of the art.

[0079] In the above-described embodiment, an example was shown in which the axial size (X-direction) of the motor mount spacer 23 is approximately the same as the size of the housing portion 43 in the same direction. However, the size is not limited to this, and any size is acceptable as long as it protects the motor mount 12 from the rotational load of the motor 11. For example, it may be larger than the size of the housing portion 43 in the same direction, or it may be about one-third or one-half of that size.

[0080] The number and shape of the retaining projections 33 and anti-rotation projections 34 shown in the above-described embodiment are not limited to those described above and can be changed as appropriate, and the shape of the insertion hole 41 (and locking groove 42) can also be changed accordingly. In the above-described embodiment, the rotation of the motor mount spacer 23 in its housed state is restricted by the anti-rotation projections 34 engaging with the locking groove 42, which is part of the insertion hole 41. However, the means of restricting such rotation is not limited to this, and for example, the rotation may be restricted by a protrusion or recess provided on the motor mount 12 side engaging with a recess or protrusion provided on the motor mount spacer 23 side, and these protrusions or recesses may be provided independently of the insertion hole 41.

[0081] In the above-described embodiment, a pleated screen was shown as an example of the shading material 2. However, other types of shading materials 2 can also be used, such as honeycomb screens, Venetian blinds, vertical blinds, and roller screens. Furthermore, these shading materials 2 may be able to move up and down relative to the headbox, or they may simply open and close without moving up and down (slats).

[0082] In the embodiments described above, an example was shown in which the motor mount 12 has two housing sections 43, but the number of housing sections 43 may be three or more. In that case, the motor 11 is housed in one or more of the housing sections 43, and the motor mount spacer 23 is housed in one or more housing sections 43 that do not house the motor 11. [Explanation of symbols]

[0083] 1… Headbox 2……shielding material 3…Bottom Rail 4. Lifting cord 5... Intermediate bar 6……First shielding material 7……Second shielding material 8… Dimming cord 10... Drive shaft 11...motor 12... Motor Mount 21... Motor output shaft 23... Motor mount spacer 24... Plate material 30……Base 31……Protrusion 32...Operation unit 33... Retaining protrusion 34... Anti-rotation protrusion 41... Through hole 42... Locking groove 43... Containment Unit 100... Electric blinds 200... Electric blinds J... Jig S... Screw component

Claims

1. A motor fixing device for an electric blind, comprising one or more motors inside the headbox that rotate the drive shaft to open and close a shielding material, A motor mount having a plurality of housing sections that can support and house the motor, and the motor housed in the housing sections can be fixed to the head box, A spacer that can be fitted into the housing portion, has a size greater than or equal to a predetermined size in the axial direction of the output shaft of the motor, and protects the motor mount from the rotational load of the motor, Equipped with, The motor mount is capable of fixing the motor to the headbox with the spacer housed in one of the multiple housing sections where the motor is not housed. Motor fixing device for electric blinds.

2. A motor fixing device for an electric blind according to claim 1, The spacer has an axial size equal to or greater than that of the housing portion. Motor fixing device for electric blinds.

3. A motor fixing device for an electric blind according to claim 1 or 2, The motor mount has a plurality of insertion portions that communicate with the housing portion so that the output shaft can be inserted through them. The spacer has a base portion that is housed in the housing portion and a projection portion that protrudes from the base portion in the axial direction so as to be insertable into the insertion portion, and is configured such that when the base portion is rotated while housed in the housing portion, a part of the projection portion is locked to the motor mount. Motor fixing device for electric blinds.

4. A motor fixing device for an electric blind according to claim 3, The insertion portion is formed to be substantially the same shape as the protruding portion, The protruding portion has a locking portion that protrudes in the circumferential direction in the axial direction so that it can be locked into the insertion portion by being rotated in the housing state. Motor fixing device for electric blinds.

5. A motor fixing device for an electric blind according to claim 3, The motor mount further comprises a plate material positioned on the outside of the surface where the insertion portion is formed, through which a screw member can be inserted from the outside of the motor mount through the insertion portion and screwed into the motor, and with a portion open to allow the output shaft and the protruding portion to be inserted. Motor fixing device for electric blinds.

6. A motor fixing device for an electric blind according to claim 3, The spacer is formed with a hollow interior, The aforementioned protruding portion has an operating part that allows the spacer to be rotated by a jig inserted from the inside. Motor fixing device for electric blinds.

7. A motor fixing device for an electric blind according to claim 3, The aforementioned protruding portion has an operating portion that protrudes in the axial direction and allows the spacer to be rotated from the outside of the motor mount. Motor fixing device for electric blinds.

8. A motor fixing device for an electric blind according to claim 3, The base has an operating part that allows the spacer to be rotated in the portion that does not fit into the housing in the housing state. Motor fixing device for electric blinds.

9. A motor fixing device for an electric blind according to claim 3, The base portion has a protrusion that projects from the base portion in the axial direction, The protrusion presses against the inner surface of the insertion portion when the spacer is rotated, and after the spacer has rotated a predetermined amount, it locks into a part of the insertion portion, thereby restricting the rotation of the spacer in the accommodated state. Motor fixing device for electric blinds.

10. Headbox and, A shielding material having one end supported by the headbox and hanging down from the headbox in a manner that allows it to be opened and closed, It is equipped with, The aforementioned headbox has, inside it, One or more motors that rotate the drive shaft to open and close the shielding material, A motor fixing device according to claim 1, comprising Electric blinds.

Images