Winding shaft

Abstract

In a winding shaft equipped with a built-in switch, the sloping of the output shaft side of the switch is suppressed. [Solution] In a winding shaft 1' comprising a winding drum 1, an opening / closing mechanism 2 provided inside the winding drum 1, and a drive rotating body (rotating wheel 11) and driven rotating bodies (rotating wheels 10, 12-14) provided inside the winding drum 1 and rotating integrally with the winding drum 1, an output shaft 20 protruding from the end of the opening / closing mechanism 2 and the drive rotating body (rotating wheel 11) are connected via a transmission mechanism (reduction gear 63), and a deflection-preventing rotating body (rotating wheel 12) is provided located between the drive rotating body (rotating wheel 11) and the end of the opening / closing mechanism 2 (including the end) and is capable of rotating integrally with the winding drum 1.

Description

Technical Field

[0001] The present invention relates to a winding shaft, and more particularly, to a winding shaft provided with a shaft built-in opening / closing device.

Background Art

[0002] In an electric shutter, a shutter curtain is moved up and down to open and close an opening by rotationally driving a winding shaft with an opening / closing device. Types of winding shafts include a type in which the winding shaft is rotated by an external opening / closing device (separately installed opening / closing device) (Patent Document 1), and a type in which the winding shaft is rotated by an opening / closing device built in the winding shaft (built-in opening / closing device) (Patent Document 2).

[0003] In a conventional winding shaft provided with a built-in opening / closing device, the opening / closing device includes a drive wheel and a driven wheel, the drive wheel and the driven wheel are fitted to the inner surface of the winding drum of the winding shaft, and the winding shaft is rotated by rotating the drive wheel with the opening / closing device. When it is desired to use a separately installed opening / closing device as a built-in opening / closing device, how to support the opening / closing device inside the winding shaft becomes an issue.

Patent Document 1

Patent Document 2

Disclosure of the Invention

Problem to be Solved by the Invention

[0004] An object of the present invention is to suppress the downward inclination on the output shaft side of the opening / closing device in a winding shaft provided with a shaft built-in opening / closing device.

Means for Solving the Problem

[0005] The technical means adopted by the present invention to solve such a problem is as follows: A winding drum, An opening and closing mechanism is provided inside the winding drum, A driving rotating body and a driven rotating body are provided inside the winding drum and rotate integrally with the winding drum, In a winding shaft equipped with, The output shaft protruding from the end of the opening / closing mechanism and the drive rotating body are connected via a transmission mechanism. A deflection-preventing rotating body is provided, located between the drive rotating body and the end of the opening / closing mechanism (including the end), and which is rotatable integrally with the winding drum. It's a winding shaft.

[0006] In one embodiment, the output shaft is transmitted via the transmission mechanism to a rotating part equipped with the drive rotating body, The deflection-preventing rotating body is rotatably mounted on the outer circumferential surface of the rotating part.

[0007] In one embodiment, the transmission mechanism includes a reduction gear, and the output shaft is transmitted via the reduction gear to a rotating part that includes the drive rotating body.

[0008] In one embodiment, the output section of the reduction gear is fitted with the receiving section of the rotating section and is able to rotate together as a single unit. The output section and the receiving section are connected by a radially extending fastening member, thereby restricting axial movement. The deflection-preventing rotating body is provided on the outer circumferential surface of the rotating part, positioned on the opening / closing mechanism side of the fastening member.

[0009] In one embodiment, the rotating part equipped with the drive rotating body is part of the emergency release device, Upon activation of the emergency release device, the drive rotating body is disconnected from the transmission mechanism and becomes capable of free rotation. In one embodiment, when the emergency release device is not activated, the rotating part and the deflection-preventing rotating body rotate, When the emergency release device is activated, the drive rotating body is detached from the rotating part, and the deflection-preventing rotating body rotates relative to the outer surface of the rotating part. [Effects of the Invention]

[0010] In the present invention, a deflection-preventing rotating body is provided located between the drive rotating body and the end of the opening / closing mechanism (including the end), and which can rotate integrally with the winding drum. This makes it possible to suppress the downward tilt of the output shaft side of the opening / closing mechanism (the reduction gear portion that is power-driven to the output shaft) in a winding shaft equipped with a shaft-integrated opening / closing mechanism. [Brief explanation of the drawing]

[0011] [Figure 1] This is a longitudinal cross-sectional view of a window shutter equipped with a winding shaft according to this embodiment. [Figure 2] This is a cross-sectional view of a window shutter equipped with a winding shaft according to this embodiment. [Figure 3] This is an overall view of the winding shaft according to this embodiment. [Figure 4] This is an overall view of the drive assembly of the winding shaft according to this embodiment. [Figure 5] This is a partially enlarged (cross-sectional) view showing the first support structure of the first side portion of the opening / closing mechanism in the winding shaft according to this embodiment. [Figure 6] This is a partially enlarged view showing the first support structure of the first side portion of the opening / closing mechanism in the winding shaft according to this embodiment. [Figure 7] This is an overall view of the opening and closing mechanism in the winding shaft according to this embodiment. [Figure 8] This figure shows the reinforcing plate material for the opening and closing mechanism in the winding shaft according to this embodiment. [Figure 9] This is an exploded view showing the first support structure of the first side portion of the opening / closing mechanism in the winding shaft according to this embodiment. [Figure 10] This figure shows the components (fixed base) of the first support structure of the first side portion of the opening / closing mechanism in the winding shaft according to this embodiment. [Figure 11] This figure shows the components (crown) of the first support structure of the first side portion of the opening / closing mechanism in the winding shaft according to this embodiment. [Figure 12]This is a diagram showing the constituent element (shaft adapter) of the first support structure at the first side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 13] This is a view taken in the direction of arrow A in Figure 3. [Figure 14] This is a cross-sectional view taken in the direction of arrow B in Figure 3. [Figure 15] This is a diagram showing the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 16] The left drawing is a front view showing a state where a flange plate is mounted on the second side portion of the opening and closing device, and the right drawing is a cross-sectional view taken in the direction of arrow E in the left drawing. [Figure 17] This is a view taken in the direction of arrow F in the left drawing of Figure 16. [Figure 18] This is an exploded view showing the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment.. [Figure 19] This is a diagram showing the constituent element (flange plate) of the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 20] This is a diagram showing the constituent element (reduction gear assembly) of the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 21] This is a diagram showing the constituent element (emergency release device) of the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 22] This is a diagram showing the constituent element (deflection preventing rotating body) of the second support structure at the second side portion of the opening and closing device in the winding shaft according to the present embodiment. [Figure 23] This is a cross-sectional view taken in the direction of arrow C in Figure 3. Note that in Figure 23, the winding drum is shown in solid black. [Figure 24] This is a view taken in the direction of arrow D in Figure 3. [Figure 25] This is a diagram showing the spring assembly of the winding shaft according to the present embodiment. [Figure 26] This is an operation explanatory view of another embodiment of the first support mechanism of the opening and closing device in the winding shaft. [Figure 27]This figure shows another embodiment of the first support mechanism in Figure 26. [Figure 28] This is a view from arrow G in Figure 26. [Figure 29] This figure shows the first side portion of the opening / closing mechanism in Figure 26. [Figure 30] This figure shows the components (fixed base) of the first support mechanism according to another embodiment in Figure 26. [Figure 31] This figure shows the components (shaft adapter) of the first support mechanism according to another embodiment in Figure 26. [Modes for carrying out the invention]

[0012] [A] Window shutter device [A-1] Overall configuration A window shutter is a device that opens and closes the outdoor side of a window opening. As shown in Figures 1 and 2, it is located above the outdoor side of the window opening and comprises left and right bearings or brackets B that extend from the building structure C, a winding shaft 1' supported between the left and right brackets B, a shutter curtain S whose upper end is connected to the winding shaft 1', and guide rails G provided at both the left and right ends of the outdoor side of the window opening. When the window opening is fully closed, the shutter curtain S is wound onto the winding shaft 1', causing both ends of the shutter curtain S in the width direction to rise while being guided by the left and right guide rails G, thereby opening the window opening. When the shutter curtain S is unwound from the winding shaft 1', both ends of the shutter curtain S in the width direction descend while being guided by the left and right guide rails G, thereby closing the window opening.

[0013] [A-2] Winding shaft assembly The winding shaft 1' according to this embodiment is an assembly consisting of multiple elements, and as shown in Figures 2 and 3, it comprises a winding drum 1 on which the shutter curtain S is wound, an opening and closing mechanism 2 provided inside the winding drum 1, and a plurality of rotating wheels 10 to 14 arranged inside the winding drum 1 at intervals in the longitudinal direction. The winding drum 1 according to this embodiment is made of aluminum, and the rotating wheels 10 to 14 are made of resin. The winding drum 1 is a substantially cylindrical body with a circumferential wall that is substantially circular in cross-section, and a plurality of fitting receiving parts 15 are formed on the inner surface of the circumferential wall of the winding drum 1. The outer circumference of the plurality of rotating wheels 10 to 14 is provided with a fitting part 16 that can be fitted into the fitting receiving part 15 formed on the inner surface of the circumferential wall of the winding drum 1, and when the fitting receiving part 15 of the winding drum 1 and the fitting part 16 of the rotating wheels 10 to 14 are fitted together, the winding drum 1 and the plurality of rotating wheels 10 to 14 rotate as a single unit.

[0014] One of the multiple rotating wheels 10 to 14, rotating wheel 11, is a drive rotating wheel, and by rotating this rotating wheel 11 through the drive of the opening / closing mechanism 2, the winding drum 1 rotates together with the multiple rotating wheels 10 to 14. The winding shaft 1' has left and right support parts (shaft parts 40, 82) that protrude from both ends in the longitudinal direction of the winding drum 1, and these are fixed to left and right brackets B above the window opening.

[0015] As shown in Figure 3, the hollow portion of the winding drum 1 of the winding shaft 1' according to this embodiment is provided with a drive unit assembly 1'' (Figure 4) and a spring assembly 8 (see Figure 25). As shown in Figure 4, the drive unit assembly 1'' includes an opening / closing mechanism 2, a first rotating wheel 10 on the first side of the opening / closing mechanism 2, and a second rotating wheel (drive rotating body) 11 on the second side of the opening / closing mechanism 2. As shown in Figure 25, the spring assembly 8 includes a fourth rotating wheel 13 (biased in the winding direction) and a fifth rotating wheel 14. Under normal circumstances, the winding drum 1 is electrically rotated by rotating the second rotating wheel 11 driven by the opening / closing mechanism 2, and the winding drum 1 can be manually rotated by the operation of the emergency release device 7, which disconnects the transmission connection between the second rotating wheel 11 and the opening / closing mechanism 2.

[0016] [B] Winding shaft drive assembly As shown in Figure 4, the drive assembly 1'' of the winding shaft 1'' consists of an opening / closing mechanism 2, a first support mechanism or first assembly at the first axial (lengthwise) end of the opening / closing mechanism 2, and a second support mechanism or second assembly at the second axial (lengthwise) end of the opening / closing mechanism 2. The first assembly includes a first rotating wheel 10, a fixed base 3, and a shaft adapter 4. The second assembly includes a second rotating wheel 11, a third rotating wheel 12, a flange plate 5, a reduction gear assembly 6, and an emergency release device 7, and the second rotating wheel 11 (i.e., the winding drum 1) rotates with the output torque increased by the reduction gear assembly 6.

[0017] The drive unit assembly 1'' is inserted axially into the hollow part from the first end of the winding drum 1. The fitting portions 16 of the second rotating wheel 11, the third rotating wheel 12, and the first rotating wheel 10 are slid axially into the fitting receiving portion 15 on the inner surface of the peripheral wall of the winding drum 1, and the second rotating wheel 11, the third rotating wheel 12, the first rotating wheel 10 and the winding drum 1 are fitted together so that they rotate as a single unit in the circumferential direction. The flange portion 100 of the first rotating wheel 10, which constitutes the drive unit assembly 1'', is in contact with or close to the first end of the winding drum 1 (see Figure 5). The winding drum 1 and the second rotating wheel (drive rotating body) 11 are connected by a screw 74. The screw 74 is connected to the first rotating wheel 10 in a recessed groove 17 (see Figure 24) formed along the entire length of the winding drum 1. The end of the wire W2 is extended to the outside from the second end of the winding drum 1.

[0018] [B-1] Opening / closing mechanism As shown in Figure 7, the switch 2 has a roughly rectangular cross-section and is equipped with a long, box-shaped case body 2'. Inside the case body 2' are components not shown, such as a motor (stepping motor), encoder, control unit, and receiver. Wiring W1 for supplying power to the motor extends from the first end of the case body 2' in the longitudinal direction, and a drive shaft or output shaft 20, which is rotated by the motor, protrudes from the second end of the case body 2' in the longitudinal direction.

[0019] The case body 2' of the opening / closing mechanism 2 according to this embodiment is made of resin, and the opening / closing mechanism 2 is equipped with a reinforcing plate 2A provided along the outer surface of the case body 2'. As shown in Figure 8, the reinforcing plate 2A is made of a long metal plate with a U-shape in cross-section that extends over substantially the entire length of the case body 2'. More specifically, the reinforcing plate 2A consists of a first surface portion 21 and second surface portions 22 and third surface portions 23 that rise up opposite each other from both ends in the width direction of the first surface portion 21, and is fitted onto three surfaces of the case body 2' over substantially the entire length of the case body 2'. On the case body 2', a stepped portion 25 is formed on the first end side of the surface where the reinforcing plate 2A is not provided (the top surface in the illustrated orientation), and the portion on the tip side of the stepped portion 25 is the first side portion of the opening / closing mechanism 2. In the illustrated embodiment, the reinforcing plate 2A has a U-shape in cross-section, but it may also have an L-shape or a square shape in cross-section.

[0020] In the reinforcing plate material 2A according to this embodiment, the first end in the longitudinal direction of the first surface portion 21 protrudes more than the first ends of the second surface portion 22 and the third surface portion 23, and a protruding portion 210 is integrally formed. In this embodiment, the positions of the first ends of the second surface portion 22 and the third surface portion 23 substantially coincide with the stepped portion 25 (see Figures 5 and 7). Recesses 211, 220, and 230 are formed on the second end edges of the first surface portion 21, the second surface portion 22, and the third surface portion 23, respectively.

[0021] A screw insertion hole 212 for a screw 24 is formed approximately midway along the length of the first surface portion 21, and the reinforcing plate material 2A is fitted onto the case body 2' and fixed with the screw 24. Two screw holes 213 are formed in the protruding portion 210 of the first surface portion 21. As will be described later, in addition to reinforcing the resin case body 2', the reinforcing plate material 2A according to this embodiment is used to fix the first side portion of the opening / closing mechanism 2 (the protruding portion 210 of the reinforcing plate material 2A in this embodiment) to the first support mechanism, and to fix the second side portion of the opening / closing mechanism 2 to the second support mechanism.

[0022] [B-2] First support mechanism As shown in Figures 5 and 6, the first longitudinal end of the opening / closing mechanism 2 is supported by a first support mechanism. As shown in Figure 9, the first support mechanism is a first assembly consisting of a fixed base 3 to which the first longitudinal end of the opening / closing mechanism 2 is fixed, a first rotating wheel 10 rotatably mounted on the fixed base 3, and a shaft adapter 4 fixed to the bracket B and also fixed to the fixed base 3. The first assembly is fixed to the first side portion of the opening / closing mechanism 2 by a first fixing means (screw 32).

[0023] [B-2-1] Fixed base As shown in Figure 10, the fixed base 3 is integrally formed from a first part 30 and a second part 31, both having a circular outer shape in cross-section, with the outer shape of the first part 30 being slightly larger in diameter than that of the second part 31. Inside the first part 30, a square-shaped hollow portion or recess 300 is formed to receive the first end of the opening / closing mechanism 2 in the longitudinal direction. The recess 300 corresponds to the cross-sectional shape and dimensions of the opening / closing mechanism 2, allowing the first end of the opening / closing mechanism 2 to be inserted and mounted.

[0024] Inside the second portion 31 of the fixed base 3, a hollow or insertion portion 310 with a substantially circular cross-sectional shape is formed to receive the wiring W1. An opening is formed in the bottom surface 3000 of the recess 300 of the first portion 30, and the recess 300 of the first portion 30 and the insertion portion 310 of the second portion 31 are in communication. The insertion portion 310 of the second portion has a diameter through which the connector W1' at the end of the wiring W1 can be inserted, and the insertion portion 310 has an extension portion 311 that protrudes from the circular portion in cross-sectional view.

[0025] A recess 301' is formed in a predetermined portion of the side wall of the first portion 30 of the fixed base 3, and a through hole 301 (for a screw 32) is formed at the bottom of the recess 301'. Alternatively, the through hole 301 may be formed directly in the side wall of the first portion 30 without forming the recess 301'. A pair of screw holes 313 (for a screw 33) are formed on the front surface 312 of the second portion 31 of the fixed base 3, flanking the through portion 310.

[0026] [B-2-2] Crown (First Rotation Wheel) As shown in Figure 11, the first rotating wheel 10 consists of a ring-shaped or cylindrical body 10' and a flange portion 100, and is an element referred to as a crown. The inner circumferential surface of the body 10' of the first rotating wheel 10 forms a circular hollow portion 101, and the diameter of the inner circumferential surface (hollow portion 101) is slightly larger than the outer diameter of the second portion 31 of the fixed base 3, so that the first rotating wheel 10 is rotatably mounted on the outer circumference of the second portion 31 of the fixed base 3. A fitting portion 16 is integrally formed on the outer circumference of the body 10', which fits into a fitting receiving portion 15 on the inner surface of the peripheral wall of the winding drum 1, so that the outer circumference of the body 10' can be fitted into the fitting receiving portion 15 on the inner surface of the peripheral wall of the winding drum 1. The flange portion 100 is circular, and the outer diameter of the flange portion 100 is mostly larger than the inner diameter (diameter of the hollow portion) of the winding drum 1.

[0027] [B-2-3] Shaft adapter (end support element) As shown in Figure 12, the shaft adapter 4 consists of a shaft portion 40 and a flange portion 41. A groove portion 410 is formed in a predetermined part of the flange portion 41, and through holes 411 (for screws 33) are formed opposite each other on either side of the shaft portion 40. The outer diameter of the flange portion 41 of the shaft adapter 4 is slightly larger than the outer diameter of the second portion 31 of the fixed base 3. The shaft adapter according to this embodiment is made of metal.

[0028] [B-2-4] Assembly of the first support mechanism The first end of the opening / closing mechanism 2 is inserted into the recess 300 of the first portion 30 of the fixed base 3. Figure 5 shows the state in which the first side portion of the opening / closing mechanism 2 is inserted into the recess 300 of the first portion 30 of the fixed base 3. The first end of the case body 2' of the opening / closing mechanism 2 and the protruding portion 210 of the first surface portion 21 of the reinforcing plate material 2A are located within the recess 300, the tip of the case body 2' and the tip of the protruding portion 210 are in contact with or close to the bottom surface 3000 of the recess 300 of the first portion 30 of the fixed base 3, and the four sides of the first end of the opening / closing mechanism 2 (three sides of the case body 2' and the protruding portion 210) are in contact with or close to the four circumferential walls of the recess 300. In Figure 5, there is a gap between the tip side portion of the stepped portion 25 of the case body 2' of the opening / closing mechanism 2 and the recess 300, but they may be in contact or even closer. The stepped portion 25 of the case body 2' of the opening / closing mechanism 2 is close to or in contact with the surface of the first portion 30 of the fixed base 3. The first ends of the second surface portion 22 and the third surface portion 23 of the reinforcing plate material 2A are located outside the recess 300.

[0029] With the first side portion of the switch 2 inserted into the recess 300 of the first portion 30 of the fixed base 3, the fixed base 3 is fixed to the protruding portion 210 of the reinforcing plate 2A of the switch 2 by aligning the insertion hole 301 in the peripheral wall or side wall of the first portion 30 with the screw hole 213 in the protruding portion 210 of the reinforcing plate 2A of the switch 2 using a screw 32. At this time, the wiring W1 extending from the first end of the switch 2 extends through the insertion portion 310 of the second portion 31 of the fixed base 2.

[0030] The body 10' of the first rotating wheel 10 is rotatably mounted on the outer circumference of the second portion 31 of the fixed base 3. The flange portion 41 of the shaft adapter 4 is brought into contact with the front surface 312 of the second portion 31 of the fixed base 3, and the insertion hole 411 of the flange portion 41 is aligned with the screw hole 313 of the second portion 31 of the fixed base 3, and it is fixed with a screw 33. As shown in Figures 5 and 6, the first rotating wheel 10 is positioned between the first portion 30 of the fixed base 3 and the flange portion 41 of the shaft adapter 4, and is rotatably mounted on the second portion 31 of the fixed base 3. The groove portion 410 of the flange portion 41 and the extension portion 311 of the insertion portion 310 of the second portion 31 of the fixed base 3 coincide, and the wiring W1 extends from this coincidence portion (see Figure 13).

[0031] [Note 1] Winding cylinder 1, An opening / closing mechanism 2 is installed inside the winding drum 1, A drive rotating body (second rotating wheel 11) and driven rotating bodies (first rotating wheel 10, third rotating wheel 12, fourth rotating wheel 13, fifth rotating wheel 14) are provided inside the winding drum 1 and rotate together with the winding drum 1, Support parts at both ends in the longitudinal direction (shaft parts 40, 82), In the winding shaft 1' equipped with, A fixing element (fixing base 3) comprising a first part 30 that receives the end of the opening / closing mechanism 2, and a second part 31 having an outer surface that rotatably supports the end-driven rotating body (first rotating wheel 10) located at the end of the winding drum 1, The end support element (shaft adapter 4) that forms one of the support portions, Equipped with, The end of the opening / closing mechanism 2 is received by the first portion 30 of the fixing element (fixing base 3) and fixed to the fixing element (fixing base 3). The end support element (shaft adapter 4) is fixed to the second part 31 of the fixing element (fixing base 3), The end-driven rotating body (first rotating wheel 10) is located between the first part 30 of the fixed element (fixed base 3) and the end support element (shaft adapter 4), and is rotatably mounted on the second part 31 of the fixed element (fixed base 3). Winding shaft. In one embodiment, the first portion 30 of the fixed element (fixed base 3) is provided with a recess 300 for receiving the end of the opening / closing mechanism 2. In one embodiment, the end support element (shaft adapter 4) consists of a shaft portion 40 that forms one side of the support portion and a flange portion 41.

[0032] In one embodiment, the second portion 31 of the fixed element (fixed base 3) has an insertion portion 310 (with an extension portion 311) for the wiring W1 of the switch 2, and the flange portion 41 of the end support element (shaft adapter 4) has a notch (groove portion 410) or hole portion formed so as to communicate with the extension portion 311 of the insertion portion 310.

[0033] In one embodiment, a reinforcing plate 2A is provided on the outer surface of the opening / closing mechanism 2. The tip portion (protruding portion 210) of the reinforcing plate material 2A is located within the recess 300, and the fixing element (fixing base 3) is fixed to the tip portion (protruding portion 210) with a fastening member (screw 32), thereby fixing the fixing element (fixing base 3) to the opening / closing mechanism 2.

[0034] [B-3]Second support mechanism As shown in Figure 15, the second axial end of the opening / closing mechanism 2 is supported by a second support mechanism. The second support mechanism is a second assembly consisting of a flange plate 5 to which the second axial end of the opening / closing mechanism 2 is fixed, a reduction gear assembly 6 fixed to the flange plate 5, and a second rotating wheel 11 that is electrically connected to the reduction gear assembly 6. The second assembly is fixed to the second end of the opening / closing mechanism 2 by a second fixing means (claw portion 53, recess 211, 220, 230, protrusion 54, screw 58). In this embodiment, the second rotating wheel 11 is provided on the emergency release device 7, and a third rotating wheel (rotating body for preventing deflection) 12 is externally mounted on the emergency release device 7, positioned between the second rotating wheel 11 and the reduction gear assembly 6.

[0035] [B-3-1] Flange Plate As shown in Figure 19, the flange plate 5 consists of a peripheral wall or side wall portion 50 with a circular circumferential surface and a surface portion 51, and is fixed to the second end of the opening / closing mechanism 2. The surface portion 51 has a hole 52 through which the shaft portion 20 of the opening / closing mechanism 2 is inserted. When the flange plate 5 is fixed to the second end of the opening / closing mechanism 2, the surface of the surface portion 51 facing the front side is called the front surface 510, and the surface located on the inside or back side is called the rear surface 511. The surface portion 51 of the flange plate 5 according to this embodiment has a predetermined thickness, and the rear surface 511 of the surface portion 51 is located behind the side wall portion 50. In addition, the front surface 510 of the surface portion 51 is concave.

[0036] A pair of projections or claw portions 53 are formed on the side wall portion 50 of the flange plate 5, extending rearward from the circumferential surface of the side wall portion 50. The claw portions 53 extend rearward beyond the rear surface 511 of the surface portion 51. An engaging projection 530 is integrally formed at the tip of the claw portion 53.

[0037] Multiple protrusions 54 are formed on the back or rear of the side wall portion 50 of the flange plate 5, spaced apart in the circumferential direction. In this embodiment, three protrusions 54 are formed on the left, right, and downward sides of the lower half of the flange plate 5 (see Figure 16, right). In this embodiment, the end faces of the protrusions 54 coincide with the rear surface 511 of the surface portion 51, and the left and right protrusions 54 project rearward from the side wall portion 50 and are integrally formed with the side wall portion 50. The protrusions 54 form elements of the fitting means for the second end of the opening / closing mechanism 2.

[0038] Multiple protrusions 55 are formed on the outer circumferential surface of the side wall portion 50, spaced apart in the circumferential direction. Multiple through holes 56 (for screws 58) are formed in the surface portion 51. Screw holes 57 (for screws 67) are formed in predetermined locations on the outer circumferential surface of the side wall portion 50. The flange plate 5 according to this embodiment is made of resin.

[0039] [B-3-2] Reducer assembly As shown in Figure 20, the gearbox assembly 6 comprises a shaft portion 62 into which the output shaft 20 of the opening / closing device 2 is fitted, a gearbox 63 that is electrically connected to the shaft portion 62, and a rotating portion 61 which is the output portion of the gearbox 63. The gearbox assembly 6 includes an adapter 60 consisting of a cylindrical portion 60', and the rotating portion 61 protrudes from the bottom of the cylindrical portion 60' and is rotatable relative to the adapter 60.

[0040] A pair of projecting pieces 600 are formed opposite each other at the tip (opening side) of the cylindrical portion 60' of the adapter 60, and a reduction gear 63 is housed at the bottom side (farthest from the opening) of the internal space of the cylindrical portion 60', which has a shaft portion 62 into which the output shaft 20 of the opening / closing device 2 is inserted and fitted. The rotating portion 61 is the output portion of the reduction gear 63, and the rotating portion 61 rotates with a reduced and increased torque relative to the rotational speed of the output shaft 20.

[0041] The front portion (side closer to the opening) of the cylindrical portion 60' of the adapter 60 and the pair of projections 600 form a mounting portion that fits onto the flange plate 5 from the axial direction. The pair of projections 600 of the adapter 60 have fitting holes 64, and the inner circumferential surface of the cylindrical portion 60' of the adapter 60 has a plurality of recesses 65 that are spaced apart in the circumferential direction. In the front portion (side closer to the opening) of the cylindrical portion 60', an insertion hole 66 (for a screw 67) is formed at a predetermined location in the circumferential direction.

[0042] [B-3-3] Emergency release device As shown in Figure 21, the emergency release device 7 comprises a first part 70 equipped with a clutch-type emergency release mechanism 72, a second part 71 that rotates integrally with the rotating part 61 of the reduction gear assembly 6, and a second rotating wheel 11 that can rotate integrally with the first part 70. Under normal circumstances, the first part 70 (and the second rotating wheel 11) and the second part 71 rotate together. When the clutch is released by pulling the wire W2, the emergency release mechanism is activated, and the second rotating wheel 11 is detached from the second part 71 (drive mechanism) and becomes free to rotate. In emergencies (for example, during a power outage or when the opening / closing mechanism fails), the window shutter can be manually operated using the spring assembly 8. As shown in Figure 3, the wire W2 extends from the second side end of the winding shaft 1' through the hollow part of the winding drum 1 and the spring assembly 8.

[0043] [B-3-4] Rotating body for preventing deflection (3rd rotating wheel 12) The third rotating wheel 12 is a rotating body for preventing deflection and has the function of suppressing downward tilting at the front end of the reduction gear assembly 6. As shown in Figure 22, the third rotating wheel 12 according to this embodiment has a circular hollow portion or insertion portion 120, and a plurality of fitting portions 16 are formed on its outer circumference. The inner diameter of the third rotating wheel 12, that is, the diameter of the insertion portion 120, is larger than the outer diameter of the second portion 71 of the emergency release device 7, and the rotating wheel 12 is mounted on the second portion 71 of the emergency release device 7 with some play. In the winding shaft 1', the fitting portions 16 on the outer circumference of the rotating wheel 12 are fitted into the fitting receiving portion 15 on the inner wall of the winding drum 1, and rotate together with the winding drum 1.

[0044] The position in which the third rotating wheel 12 is provided is not limited to the illustrated configuration, and it can be provided at any position between the second rotating wheel 11 and the second end of the opening / closing mechanism 2 (including the second end). For example, a cylindrical base may be provided around the second end of the opening / closing mechanism 2, and the third rotating wheel 12 may be rotatably mounted on the base.

[0045] [B-3-5] Assembly of the second support mechanism The flange plate 5 is fitted and fixed to the second end of the opening / closing mechanism 2 from the axial direction. More specifically, the protrusions 54 of the flange plate 5 are fitted into the recesses 211, 220, and 230 formed on the second ends in the longitudinal direction of the first surface 21, second surface 22, and third surface 23 of the reinforcing plate material 2A of the opening / closing mechanism 2 (see Figure 16 right), and the pair of claws 53 of the flange plate 5 are brought close to the periphery of the second end of the opening / closing mechanism 2 (see Figure 16 left), and then fixed with screws 58 (see Figure 17).

[0046] Next, the adapter 60 of the reduction gear assembly 6 is fitted onto the flange plate 5 fixed to the second end of the opening / closing mechanism 2 from the axial direction. More specifically, the pair of projections 600 of the adapter 60 are slid to the outside of the pair of claw portions 53 of the flange plate 5, and the engaging projections 530 at the tips of the claw portions 53 are fitted into the fitting holes 64 of the projections 600. At the same time, the convex portion 55 formed on the outer surface of the flange plate 5 is fitted from the axial direction into the recess 65 formed on the inner surface of the cylindrical portion 60' of the adapter 60. At this time, the screw holes 57 in the side wall portion 50 of the flange plate 5 and the insertion holes 66 of the adapter 60 are aligned and fixed with screws 67. As shown in Figures 17 and 19, in this embodiment, there are two types of protrusions 55 (first protrusion 55 and second protrusion 55) with different sizes and shapes, and as shown in Figure 20, there are two types of recesses 65 (first recess 65 and second recess 65) with different sizes and shapes, so that a pair of first protrusions 55 on the flange plate 5 fits into a pair of first recesses 65 on the adapter 60, and a pair of second protrusions 55 on the flange plate 5 fits into a pair of second recesses 65 on the adapter 60. This positions the flange plate 5 and the adapter 60 in the circumferential direction, so that the screw holes 57 on the flange plate 5 and the screw holes 67 on the adapter 60 are aligned.

[0047] The third rotating wheel 12 is loosely fitted onto the outer circumference of the second part 71 of the emergency release device 7, and the rotating part 61 of the reduction gear assembly 6 is fitted axially into the receiving part (not shown) of the second part 71. The rotating part 61 of the reduction gear assembly 6 and the receiving part of the second part 71 are fitted together so that they rotate as a single unit. Between the third rotating wheel 12 and the second rotating wheel 11, the second part 71 and the rotating part 61 are fixed with a cotter pin 73, restricting axial misalignment between the second part 71 and the rotating part 61.

[0048] [Note 2] Winding cylinder 1, An opening / closing mechanism 2 is installed inside the winding drum 1, A drive rotating body (second rotating wheel 11) and driven rotating bodies (first rotating wheel 10, third rotating wheel 12, fourth rotating wheel 13, fifth rotating wheel 14) are provided inside the winding drum 1 and rotate together with the winding drum 1, In the winding shaft 1' equipped with, The output shaft 20 of the opening / closing mechanism 2 and the drive rotating body (second rotating wheel 11) are transmitted and connected via a reduction gear 63. An end element (flange plate 5) is fixed to one end of the opening / closing mechanism 2. The gearbox assembly 6, including the gearbox 63, is fixed to the end element (flange plate 5) with the output shaft 20 and the gearbox 63 connected in a transmission relationship. Winding shaft.

[0049] In one embodiment, the gearbox assembly 6 includes an adapter 60 having a mounting portion (cylindrical portion 60') that fits onto the end element (flange plate 5) from the axial direction, and a housing portion located at the bottom inside the mounting portion (cylindrical portion 60'). The output section (rotating section 61) of the reduction gear 63 housed in the aforementioned housing protrudes from the adapter 60, and the rotation of the output section (rotating section 61) is transmitted to the drive rotating body (second rotating wheel 11).

[0050] In one embodiment, the end element (flange plate 5) and the mounting portion (cylindrical portion 60') of the adapter 60 are provided with a fitting means for preventing rotation. In one embodiment, the end element (flange plate 5) and the mounting portion (cylindrical portion 60') of the adapter 60 are fixed together with a screw 67.

[0051] In one embodiment, the end element (flange plate 5) comprises a surface portion 51 having a hole 52 through which the output shaft 20 is inserted, and a side wall portion 50. At least two protrusions 54 are provided on the surface 51 of the end element (flange plate 5). The opening / closing mechanism 2 has recesses 211, 220, and 230 formed therein, corresponding to the protrusions 54. The end element (flange plate 5) has a convex portion 54 that fits into the recesses 211, 220, and 230 from the axial direction. In one embodiment, a reinforcing plate 2A is provided on the outer surface of the opening / closing mechanism 2, and the recesses 211, 220, and 230 are formed in the reinforcing plate 2A. In one embodiment, the surface 51 of the end element (flange plate 5) and the end face of the opening / closing mechanism 2 are fixed together with a screw 58.

[0052] In one embodiment, a pair of claw portions 53 are provided protruding from the side wall portion 50. The end element (flange plate 5) has a pair of claw portions 53 attached to the opening / closing mechanism 2 from the axial direction. A pair of protruding pieces 600 are provided on the mounting portion (cylindrical portion 60') of the adapter 60. A pair of projections 600 of the adapter 60 engage with a pair of claws 53 of the side wall portion 50 from the axial direction.

[0053] In one embodiment, the first element (protrusion 55) of the fitting means is formed on the outer circumferential surface of the side wall portion 50 of the end element (flange plate 5). The mounting portion of the adapter 60 is provided with a cylindrical portion 60', and the second element (recess 65) of the fitting means is formed on the inner circumferential surface of the cylindrical portion 60'. The first element (protrusion 55) and the second element (recess 65) are designed to fit together from the axial direction.

[0054] [Note 3] Winding cylinder 1, An opening / closing mechanism 2 is installed inside the winding drum 1, A drive rotating body (second rotating wheel 11) and driven rotating bodies (first rotating wheel 10, third rotating wheel 12, fourth rotating wheel 13, fifth rotating wheel 14) are provided inside the winding drum 1 and rotate together with the winding drum 1, In the winding shaft 1' equipped with, The output shaft 20 protruding from the end of the opening / closing mechanism 2 and the drive rotating body (second rotating wheel 11) are connected via a transmission mechanism (reduction gear 63). A deflection-preventing rotating body (third rotating wheel 12) is provided, located between the drive rotating body (second rotating wheel 11) and the aforementioned end of the opening / closing mechanism 2 (including the aforementioned end), and capable of rotating integrally with the winding drum 1. Winding shaft.

[0055] In one embodiment, the output shaft 20 is transmitted via a transmission mechanism (reduction gear 63) to a rotating part (second part 71 of the emergency release device 7) equipped with a driving rotating body (second rotating wheel 11), The deflection-preventing rotating body (third rotating wheel 12) is rotatably mounted on the outer circumferential surface of the rotating part (second part 71).

[0056] In one embodiment, the transmission mechanism includes a reduction gear 63, and the output shaft 20 is transmitted via the reduction gear 63 to a rotating part (second part 71) which includes a drive rotating body (second rotating wheel 11). In one embodiment, the output section (rotating section 61) of the reduction gear 63 is fitted with the receiving section of the rotating section (second section 71) and can rotate together as a single unit. The output section (rotating section 61) and the receiving section are connected by a radially extending fastening member (cotter pin 73), and axial movement is restricted. The deflection-preventing rotating body (third rotating wheel 12) is positioned on the outer circumferential surface of the rotating part (second part 71) on the side of the opening / closing mechanism 2 that is closer to the fastening member (cotter pin 73).

[0057] In one embodiment, the rotating part (second part 71) equipped with a drive rotating body (second rotating wheel 11) is part of the emergency release device 7. When the emergency release device 7 is activated, the drive rotating body (second rotating wheel 11) is disconnected from the transmission mechanism and becomes capable of free rotation. In one embodiment, when the emergency release device 7 is not activated, the rotating part (second part 71) and the deflection prevention rotating body (third rotating wheel 12) rotate, When the emergency release device 7 is activated, the drive rotating body (second rotating wheel 11) is separated from the rotating part (second part 71), and the deflection prevention rotating body (third rotating wheel 12) rotates relative to the outer surface of the rotating part (second part 71).

[0058] [Note 4] Winding cylinder 1, An opening / closing mechanism 2 is installed inside the winding drum 1, A first assembly that secures the first end of the opening / closing mechanism 2 inside the winding drum 1 by a first fixing means, and a second assembly that secures the second end of the opening / closing mechanism 2 by a second fixing means, A winding shaft 1' equipped with, The opening / closing mechanism 2 consists of a long, box-shaped case (case body 2') and a reinforcing plate 2A that is provided so as to abut at least a portion of the outer surface of the case along approximately the entire length of the case. The first fixing means includes fixing the first element (fixing base 3) of the first assembly and the first end of the reinforcing plate material 2A (projection 210) with a fastening member (screw 32), The second fixing means includes a fitting means between the first element (flange plate 5) of the second assembly and the second end of the reinforcing plate material 2A. Winding shaft.

[0059] In one embodiment, the reinforcing plate 2A has a U-shape in cross-section, comprising a first surface portion 21 and second and third surface portions 22 and 23 rising from both sides of the first surface portion 20.

[0060] In one embodiment, the first assembly comprises a fixed element (fixed base 3) as the first element, a driven rotating body (first rotating wheel 10) as the second element rotatably mounted on the first element, and a third element (shaft adapter 4) that forms one of the support shafts of the winding shaft 1' and is fixed to the first element.

[0061] In one embodiment, the second assembly comprises an end element (flange plate 5) as the first element, a reduction gear assembly 6 as the second element fixed to the first element, and a drive rotating body (second rotating wheel 11) as the third element, which is movably connected to the second element.

[0062] In one embodiment, the first element of the second assembly comprises a surface portion 51 having a hole 52 through which the output shaft 20 of the opening / closing device 2 is inserted, and a side wall portion 50, The second fixing means includes connecting the surface portion 51 (rear surface 511) and the second end surface of the opening / closing mechanism 2 by a fastening member (screw 58), The surface portion 51 has at least two protrusions 54 that form the fitting means, At least two recesses 211, 220, and 230 that form the fitting means are formed at the second end of the reinforcing plate material 2A.

[0063] [C] Spring assembly As shown in Figure 25, the spring assembly 8 of the winding shaft 1' consists of an internal shaft 80, a fourth rotating wheel 13 and a fifth rotating wheel 14 rotatably mounted on the internal shaft 80, a coil spring 81 positioned between the fourth rotating wheel 13 and the fifth rotating wheel 14 and mounted on the internal shaft 80, and a shaft portion 82 protruding from the end of the internal shaft 80. One end of the coil spring 81 is fixed to the fourth rotating wheel 13, and the other end of the coil spring 81 is fixed to the internal shaft 80. The spring assembly 8 is inserted axially into the hollow portion from the second end of the winding drum 1. The flange portion 140 of the fifth rotating wheel 14 is in contact with or close to the second end of the winding drum 1.

[0064] When the shutter curtain S descends to the fully closed position, the coil spring 81 is biased to rotate the fourth rotating wheel 13 in the winding direction. In the event of an emergency such as a power outage, pulling the wire W2 activates the emergency release device 7, which releases the clutch, allowing the second rotating wheel (drive rotating body) 11 to rotate freely relative to the output shaft 20 of the opening / closing device 2. The biasing force of the coil spring 81 causes the winding drum 1 to rotate, winding up the shutter curtain S and opening the window opening.

[0065] [D] Other embodiments of the first support mechanism Referring to Figures 26 to 31, another embodiment of the first support mechanism in the winding shaft 1' will be described. As shown in Figures 26 and 27, the first longitudinal end of the opening / closing mechanism 2 is supported by the first support mechanism. The first support mechanism is a first assembly consisting of a fixed base 3' to which the first longitudinal end of the opening / closing mechanism 2 is fixed, a first rotating wheel 10 rotatably mounted on the fixed base 3', and a shaft adapter 4' fixed to the bracket B and also fixed to the fixed base 3'. The first assembly is fixed to the first end of the opening / closing mechanism 2 by a first fixing means (screw 32'). The configuration of the opening / closing mechanism 2 and the reinforcing plate 2A, and the configuration of the first rotating wheel (crown) 10 can be referred to in the previously described section.

[0066] [D-1] Fixed base As shown in Figure 30, the fixed base 3' is integrally formed from a first part 30' and a second part 31', both having a circular outer shape in cross-section, with the outer shape of the first part 30' being slightly larger in diameter than that of the second part 31'. The fixed base 3' has a rectangular insertion part 300' in cross-section for receiving the first longitudinal end of the opening / closing mechanism 2. On the front surface 312' of the second part 31' of the fixed base 3', a pair of screw holes 313' (for screws 33') are formed, flanking the insertion part 300'. The insertion part 300' corresponds to the cross-sectional shape and dimensions of the opening / closing mechanism 2, allowing the first end of the opening / closing mechanism 2 to be inserted and mounted. However, a feature of this embodiment is that the first side portion of the opening / closing mechanism 2 is a protruding portion 2'' that extends beyond the second part 31' of the fixed base 3' and the end of the winding drum 1 (see Figure 27).

[0067] [D-2] Shaft adapter (end support element) As shown in Figure 31, the shaft adapter 4' consists of a shaft portion 40', a flange portion 41', and a rectangular box-shaped receiving portion 42' located between the shaft portion 40' and the flange portion 41'. The receiving portion 42' has a rectangular hollow portion corresponding to the cross-sectional shape and dimensions of the opening / closing mechanism 2, and this hollow portion forms a housing for the first side portion (protruding portion 2'') of the opening / closing mechanism 2. Grooves 410' and 420' are formed in communication with predetermined portions of the flange portion 41' and the receiving portion 42'. The flange portion 41' has through holes 411' (for screws 33') formed opposite each other, with the shaft portion 40' in between. The flange portion 41' of the shaft adapter 4' is brought into contact with the front surface 312' of the second portion 31' of the fixing base 3', the insertion hole 411' of the flange portion 41' is aligned with the screw hole 313' of the second portion 31' of the fixing base 3', and it is fixed with a screw 33'. The outer diameter of the flange portion 41' of the shaft adapter 4' is slightly larger than the outer diameter of the second portion 31' of the fixing base 3'.

[0068] [D-3] Assembly of the first support mechanism The first side portion of the opening / closing mechanism 2 is inserted into the insertion portion 300' of the fixed base 3', causing it to protrude from the second portion 31' of the fixed base 3'. The main body 10' of the first rotating wheel 10 is rotatably mounted on the outer circumference of the second portion 31' of the fixed base 3'.

[0069] The first side portion (protruding portion 2'') of the opening / closing mechanism 2 is inserted into the housing portion of the receiving portion 42'' of the shaft adapter 4'', and the first end of the opening / closing mechanism 2 is brought into contact with the bottom surface of the receiving portion 42''. More specifically, the protruding portion 2'' is formed from the first side portion of the case body 2'' of the opening / closing mechanism 2 and the protruding portion 210 of the first surface portion 21 of the reinforcing plate material 2A, the protruding portion 2'' is located inside the housing portion of the receiving portion 42'', the tip of the case body 2'' and the tip of the protruding portion 210 are in contact with the bottom surface of the receiving portion 42'' of the shaft adapter 4'', and the four sides of the first side portion of the opening / closing mechanism 2 (three sides of the first side portion of the case body 2'' and the protruding portion 210) are in contact with or close to the circumferential inner wall of the housing portion of the receiving portion 42''. In the illustrated embodiment, a stepped portion 25 is formed adjacent to the first side portion of the opening / closing mechanism 2, and the stepped portion 25 is in contact with the flange portion 41'' of the shaft adapter 4''.

[0070] With the first side portion (protruding portion 2'') of the switch 2 inserted into the receiving portion 42'' of the shaft adapter 4'', the shaft adapter 4'' is fixed to the protruding portion 210 of the reinforcing plate material 2A of the switch 2 by aligning the insertion hole (not shown) provided in a predetermined portion of the receiving portion 42'' with the screw hole 213 of the protruding portion 210 of the reinforcing plate material 2A of the switch 2 using a screw 32''. At this time, the wiring W1 extending from the first end of the switch 2 extends to the outside from the grooves 410'' and 420'' (see Figure 27).

[0071] [D-4] Operation of the first support mechanism according to another embodiment Referring to Figure 26, the operation of the first support mechanism according to another embodiment will be described. In the first support mechanism according to this embodiment, by configuring the first side portion (protruding portion 2'') of the opening / closing mechanism 2 to protrude to the outside beyond the first end of the winding drum 1, the position of the opening / closing mechanism 2 on the winding shaft 1'' can be shifted to the first side. As is clear from comparing Figure 3 and Figure 26, when using opening / closing mechanisms 2 of the same length, in the configuration shown in Figure 26, the opening / closing mechanism 2 can be shifted to the first side by a distance α. In Figure 26, the drive unit assembly 1'' in Figure 3 is shown by a dashed line, and the distance between the drive unit assembly 1'' and the spring assembly 8 is a gap β.

[0072] Moving the opening / closing mechanism 2 by a distance α toward the first side allows the second end of the opening / closing mechanism 2 and the second support mechanism supporting the second end (shown as the emergency opening device 7 in Figure 26) to also move by a distance α toward the first side. This lengthens (β+α) the space (storage space for the spring assembly 8) formed between the drive assembly 1'' and the second end of the winding drum 1 in the hollow portion of the winding drum 1, making it possible to accommodate spring assemblies 8 of different sizes (lengths) and increasing the design flexibility.

[0073] [Note 5] Winding cylinder 1, An opening / closing mechanism 2 is installed inside the winding drum 1, A drive rotating body (second rotating wheel 11) and driven rotating bodies (first rotating wheel 10, third rotating wheel 12, fourth rotating wheel 13, fifth rotating wheel 14) are provided inside the winding drum 1 and rotate together with the winding drum 1, A spring assembly 8 is provided on the second side inside the winding drum 1 and includes at least a portion of the driven rotating body (fourth rotating wheel 13, fifth rotating wheel 14), Support parts at both ends in the longitudinal direction (shaft parts 40, 82), In the winding shaft 1' equipped with, The first side portion of the opening / closing mechanism 2 is supported by a fixed element (fixed base 3') located within the first end of the winding drum 1. The first side portion of the opening / closing mechanism 2 is provided with a protruding portion 2'' (including the protruding portion 210) that extends beyond the first end of the winding drum 1 by inserting a fixing element (fixing base 3'), The protruding portion is fixed to the end support element (shaft adapter 4') that forms one side of the support portion (shaft portion 40). Winding shaft. In one embodiment, an end-driven rotating body (first rotating wheel 11) is provided on the outer circumferential surface of the fixed element (fixed base 3'). In one embodiment, the end support element (shaft adapter 4') is fixed to the fixing element (fixing base 3').

[0074] In one embodiment, the end support element (shaft adapter 4') consists of a shaft portion 40' that forms one side of the support portion, a storage portion (receiving portion 42') with an internal shape corresponding to the outer shape of the protruding portion of the opening / closing mechanism 2, and a flange portion 41'. The protruding portion 2'' is stored in the storage section (receiving section 42'') and is fixed to the side wall of the storage section (receiving section 42'') with a fastening member (screw 32''). In one embodiment, a reinforcing plate 2A is provided on the outer surface of the opening / closing mechanism 2. The tip portion (protruding portion 210) of the reinforcing plate material 2A is located inside the storage portion (receiving portion 42'), and the end support element (shaft adapter 4') and the opening / closing mechanism 2 are fixed by fixing the side wall of the storage portion (receiving portion 42') to the tip portion (protruding portion 210) of the reinforcing plate material 2A with a fastening member (screw 32').

[0075] In one embodiment, the side wall and flange portion 41' of the housing portion (receiving portion 42') of the end support element (shaft adapter 4') are formed with notches (grooves 410', 420') or holes to serve as insertion points for the wiring W1 of the switch 2. [Explanation of Symbols]

[0076] 1' Winding shaft 1'' Drive unit assembly 1. Rolled Cylinder 10 Rotating wheels (crown, driven rotating body, end driven rotating body) 11. Rotating Wheel (Driven Rotating Body) 12 Rotating wheels (rotating body for preventing deflection, driven rotating body) 13. Rotating Wheel (Spring Assembly, Driven Rotating Body) 14. Rotating Wheel (Spring Assembly, Driven Rotating Body) 15. Fitting receiving part of the winding drum 16. Fitting part of the rotating wheel 2. Opening / closing mechanism 20 Output shaft 2' Case body (case) 2´´ Protruding part (tip side part) 2A Reinforcement plate material 21 First side 210 Protruding part (tip side part) 211 Recess 213 Screw holes 22 Second side part 220 recess 23 Third side 230 recess 3. Fixed base (fixed element) 30 Part 1 300 recess 301 Through hole 31 Part 2 3' Fixed base (fixed element) 30´ 1st part 31´ 2nd part 4. Shaft adapter (end support element) 40 Shaft part (support part) 41 Flange section 410 Groove (notch) 4' Shaft adapter (end support element) 40' shaft 41' Flange section 410' Groove (notch) 42' Receiving section (storage section) 420' Groove (notch) 5. Flange plate (end element) 50 Side wall section 51 area 511 Rear (face) 52 Hole 53 Nail area 530 Engaging projection (fitting means) 54 Convex part 55 Protrusion (fitting means, first element) 6 Reducer assembly 60 adapter 60' Cylindrical part (mounting part) 600 protrusion 61 Rotating section (output section) 63 Reducer 64 Fitting hole (fitting means) 65 Recess (fitting means, second element) 7 Emergency release device 70 Part 1 71 Part 2 8 Spring Assembly 82 Shaft part (support part)

Claims

1. The rolled drum and An opening and closing mechanism is provided inside the winding drum, A driving rotating body and a driven rotating body are provided inside the winding drum and rotate integrally with the winding drum, In a winding shaft equipped with, The output shaft protruding from the end of the opening / closing mechanism and the drive rotating body are connected via a transmission mechanism. A deflection-preventing rotating body is provided, located between the drive rotating body and the end of the opening / closing mechanism (including the end), and which is rotatable integrally with the winding drum. Winding shaft.

2. The output shaft is transmitted via the transmission mechanism to the rotating part equipped with the drive rotating body. The deflection-preventing rotating body is rotatably mounted on the outer circumferential surface of the rotating part. The winding shaft according to claim 1.

3. The transmission mechanism includes a reduction gear, and the output shaft is transmitted via the reduction gear to a rotating part equipped with the drive rotating body. The winding shaft according to claim 2.

4. The output section of the reduction gear is fitted with the receiving section of the rotating section and is able to rotate as a single unit. The output section and the receiving section are connected by a radially extending fastening member, thereby restricting axial movement. The aforementioned deflection-preventing rotating body is provided on the outer circumferential surface of the rotating part, positioned closer to the opening / closing mechanism than the fastening member. The winding shaft according to claim 3.

5. The rotating part equipped with the aforementioned drive rotating body is part of the emergency release device, Upon activation of the emergency release device, the drive rotating body is disconnected from the transmission mechanism and becomes capable of free rotation. A winding shaft according to any one of claims 2 to 4.

6. When the emergency release device is not activated, the rotating part and the deflection-preventing rotating body rotate. When the emergency release device is activated, the drive rotating body is separated from the rotating part, and the deflection-preventing rotating body rotates relative to the outer surface of the rotating part. The winding shaft according to claim 5.

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