Electric bracket structure

Abstract

To provide an electric bracket structure with simpler field work, while retaining existing bearings.SOLUTION: An electric bracket structure consists of a bracket 1 with bearings (11, 12) for a manual winding shaft, and an electric unit U mounted to the bracket 1. The electric unit U consists of winding shaft connections (3, 4) with a sprocket 41, an opening / closing machine M, a chain C interlocking and connecting the sprocket and the opening / closing machine M, and a mounting base 5 mounted with the winding shaft connection and the opening / closing machine M. The mounting base 5 is mounted to the bracket 1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a motorized bracket structure. [Background technology]

[0002] In a manual shutter, the shutter curtain is wound onto a winding shaft that is rotatably supported by left and right bearings on the surfaces of the left and right brackets, or the shutter curtain is unwound from the winding shaft to open and close the opening.

[0003] There are cases where a manual shutter needs to be modified to become electric (see Patent Document 1). In most cases, modifications are carried out while leaving the left and right brackets. To turn one of the existing brackets into a drive bracket, it is necessary to attach a drive shaft to that bracket, but the existing bracket is provided with a bearing that supports the manual winding shaft, and the existing bearing prevents the attachment of the drive shaft. In particular, if the existing bearing is integrally formed with the bracket, it is not possible to remove just the bearing. [Patent Document 1] Patent Publication No. 2004-257167 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a motorized bracket structure that simplifies on-site work while retaining existing bearings. [Means for solving the problem]

[0005] The technical means adopted in the present invention to solve such problems are as follows: a bracket having a bearing for a manual winding shaft; An electric unit attached to the bracket; It consists of: The electric unit includes a winding shaft connecting portion having a sprocket, an opening / closing device, a chain for connecting the sprocket and the opening / closing device, and a mounting base on which the winding shaft connecting portion and the opening / closing device are mounted, and the mounting base is attached to the bracket. It is a motorized bracket structure.

[0006] In one embodiment, the winding shaft connecting portion is attached to a surface portion of the mounting base, The electric unit is attached to the bracket with a bearing for the manual winding shaft received in an opening formed in a surface of the mounting base.

[0007] In one embodiment, the bearing comprises a pair of raised pieces, The edge of the opening of the mounting base abuts against or is adjacent to one or both of the pair of rising pieces. In one embodiment, the pair of raised pieces is an upper raised piece and a lower raised piece, The upper edge of the opening of the mounting base abuts or is adjacent to the upper rising piece. In one embodiment, the lower edge of the opening of the mounting base abuts or is adjacent to the lower rising piece. In this way, apart from the mounting portion (connecting portion) between the electric unit and the bracket, the mounting state of the electric unit to the bracket can be stabilized by abutting or bringing into close proximity a portion of the electric unit (the edge of the opening of the mounting base) and a portion of the bracket (the raised piece portion) in the mounted state.

[0008] In one embodiment, the surface portion has an upper locking piece and a lower fixing piece, The bracket has an upper locked portion and a lower fixed portion, The electric unit is attached to the bracket by fastening the lower fixing piece to the fixed portion by a fastening means while the upper locking piece is locked to the fixed portion. In one embodiment, the fastening means includes screws and rivets.

[0009] In one embodiment, the locking piece and the fixing piece are located on the outdoor side of the surface portion, The opening is formed on the indoor side of the locking piece and the fixing piece. Effect of the Invention

[0010] In the present invention, an electric unit is prepared by unitizing the elements necessary for motorization, and the electric unit is attached to the bracket to obtain the motorization bracket structure, thereby improving the ease of installation work on site. [Brief description of the drawings]

[0011] [Figure 1] A vertical cross-sectional view of the electric window shutter after repair in this embodiment. [Diagram 2] FIG. 4 is a plan view showing the upper portion of the window shutter. [Diagram 3] 5 is a diagram showing a connection configuration between the electric unit according to the embodiment and an existing bracket. FIG. [Figure 4] FIG. 2 is a diagram showing an electric unit according to the embodiment; [Diagram 5] FIG. 5 is a plan view of the electric unit shown in FIG. [Figure 6] 5 is a view of the electric unit shown in FIG. 4 as viewed from the direction of the arrow. [Figure 7] 13A and 13B are diagrams showing a state in which the mounting base of the electric unit is attached to an existing bracket. [Figure 8] FIG. 2 is a diagram showing the positional relationship between the bearings of the existing bracket and the drive shaft structure of the electric unit, where the left figure is a view from direction A in FIG. 1, and the right figure is a view from direction B in FIG. [Figure 9] 2 is a diagram showing a mounting base for the electric unit according to the embodiment; FIG. [Figure 10] 2 is a diagram showing a drive shaft assembly of the electric unit according to the embodiment; FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [A] Motorization of manual shutters [A-1] Overview This embodiment relates to the modification of a manual shutter, that is, the motorization of a manual shutter. In a manual shutter, a shutter curtain is wound up on a winding shaft rotatably supported on left and right manual winding shafts provided on the surface 10 of the left and right brackets 1, or the shutter curtain is unwound from the winding shaft, so that both ends of the shutter curtain in the width direction rise and fall while being guided by grooves of guide rails G on the left and right sides of the opening, thereby opening and closing the opening. The modification according to this embodiment is carried out while leaving the bearings provided on the left and right brackets 1 and the surface 10 of the brackets 1.

[0013] Fig. 1 is a vertical cross-sectional view of the electric window shutter after the renovation, and Fig. 2 is a plan view showing the upper part of the same window shutter. After the renovation, one bracket 1 becomes the driving side bracket, and the other bracket 1 becomes the driven side bracket. A drive shaft structure (winding shaft connection part) of the electric winding shaft 2 is provided on the driving side bracket, with the bearing of the existing one bracket 1 remaining, and a driven shaft 20 of the winding shaft 2 is provided on the driven side bracket, utilizing the bearing of the existing other bracket 1. The winding shaft 2 is rotatably supported between the left and right brackets 1, 1 by the drive shaft structure on one end side in the length direction and the driven shaft 20 on the other end side in the length direction.

[0014] The drive shaft structure according to this embodiment comprises a drive shaft assembly 3 (in this embodiment, mounted on bracket 1 via a mounting base 5) provided on bracket 1 selected as the drive side bracket, and a cylindrical rotating body 4 rotatably provided on drive shaft assembly 3, and the drive side of winding shaft 2 is connected to cylindrical rotating body 4. An opening / closing mechanism M is attached to bracket 1 selected as the drive side bracket so as to face the drive shaft structure of winding shaft 2, and opening / closing mechanism M and cylindrical rotating body 4 are interlocked and connected via chain C to rotate and drive winding shaft 2.

[0015] [A-2] Configuration of existing bracket The modification according to this embodiment is performed while leaving the left and right brackets 1 and the bearings provided on the surface portion 10 of the bracket 1. The bracket 1 is provided in a protruding manner from the surface portion 10 of the bracket 1 toward the outdoor side by fixing the base end side to the body W with a screw, and the surface portion 10 extends in the indoor-outdoor direction. The bearing according to this embodiment is composed of a pair of rising pieces 11, 12 cut and raised inward from the surface portion 10 of the bracket 1. One end of the manual winding shaft is connected to the bracket 1 using the pair of rising pieces 11, 12 as bearings. In this embodiment, the pair of rising pieces 11, 12 extend downwardly toward the body with respect to the horizontal direction. The upper rising piece 11 is wider than the lower rising piece 12. In this embodiment, the upper rising piece 11 and the lower rising piece 12 are trapezoidal, but the shape is not limited. An opening is formed in the surface portion 10 due to the cutting and raising of the pair of rising pieces 11, 12. The structure of the bearing of the manual winding shaft is not limited to that shown in the figure, but may be one having raised pieces formed on three sides or one having a substantially U-shape.

[0016] As shown in Fig. 7, the peripheral edge of the face portion 10 of the bracket 1 is bent to form a vertically extending rear piece 13 on the base end side, an upper piece 14 extending gently downwardly inclined toward the outdoor side, a first rear lower piece 15, and a second front lower piece 16. The front (outdoor side portion) and lower portion of the face portion 10 is cut out to form a first outdoor side bent piece 17 and a second outdoor side bent piece 18 extending horizontally. The first outdoor side bent piece 17 is located closer to the outdoor side than the second outdoor side bent piece 18, and the height position of the first outdoor side bent piece 17 is lower than the height position of the second outdoor side bent piece 18. A substantially trapezoidal opening 19 is formed in the outdoor side portion of the face portion 10, located substantially above the first outdoor side bent piece 17.

[0017] [A-3] Motorization of brackets In this embodiment, the motorized bracket structure is constructed by removing the manual winding shaft from the bracket 1 equipped with a bearing (a pair of rising pieces 11, 12) for the manual winding shaft, and attaching the electric unit U with the bearing (a pair of rising pieces 11, 12) remaining. When attaching the electric unit U to the bracket 1, the opening 19 formed in the existing bracket 1 forms the upper locked portion, and the second outdoor-side bent piece 18 forms the lower fixed portion. The electric unit U has an upper locking piece 506 and a lower fixed piece 507, and the electric unit U is attached to the bracket 1 by fixing the lower fixed piece 507 to the fixed portion (second outdoor-side bent piece 18) with a screw 508 with the upper locking piece 506 locked to the locked portion (opening 19).

[0018] [B] Electric unit The electric unit U according to this embodiment comprises a drive shaft assembly 3, a cylindrical rotor 4 rotatably mounted on the drive shaft assembly 3 and equipped with a sprocket 41, an opening / closing device M, a chain C interlocking the sprocket 41 and the opening / closing device M, and a mounting base 5 on which the drive shaft assembly 3 (the cylindrical rotor 4 is provided on the drive shaft assembly 3) and the opening / closing device M are mounted, and the mounting base 5 is attached to a bracket 1. The drive shaft assembly 3 and the cylindrical rotor 4 form a drive shaft structure (winding shaft connecting portion).

[0019] [B-1] Mounting stand The mounting base 5 is formed by processing a steel plate, and as shown in Fig. 9, the mounting base 5 has a surface portion 50, which has a horizontally rectangular first portion 50A extending in the indoor / outdoor direction and a square second portion 50B integrally formed with the outdoor side portion of the first portion 50A, the second portion 50B being smaller in height than the first portion 50A and located at a lower portion on the outdoor side of the first portion 50A. The second portion 50B is provided with an opening / closing device mounting base 51 extending perpendicularly to the surface portion 50. The opening / closing device mounting base 51 extends horizontally in the opening width direction in a cantilever manner relative to the surface portion 50, and an opening / closing device M is attached to the opening / closing device mounting base 51.

[0020] An opening 52 is formed in the first portion 50A of the surface portion 50 to receive the bearings (a pair of rising pieces 11, 12) of the bracket 1. In this embodiment, the wide upper rising piece 11 and the narrow lower rising piece 12 extend in a downward inclined manner toward the body with respect to the horizontal direction, and the opening 52 has a shape and dimensions that can receive the pair of rising pieces 11, 12. The opening 52 according to this embodiment has an upper edge 520 that is slightly larger than the width dimension of the upper rising piece 11, and a lower edge 521 that is slightly larger than the width dimension of the lower rising piece 12. More specifically, the opening 52 according to this embodiment is composed of a groove-shaped first opening 52A and a square-shaped second opening 52B that is integrally formed below the first opening 52A, and the upper edge of the first opening 52A is the upper edge 520, and the lower edge of the second opening 52B is the lower edge 521. The opening width (groove length) of the first opening 52A is larger than the opening width of the second opening 52B, and the groove length of the first opening 52A is a dimension to accommodate the upper rising piece 11, and the opening width of the second opening 52B is a dimension to accommodate the lower rising piece 12.

[0021] An upper piece 500, a lower piece 501, and a rear piece 502 are formed by bending the periphery of the first portion 50A. An upper piece 503, a lower piece 504, and a front piece 505 are formed on the periphery of the second portion 50B, and these pieces extend in the opening width direction and form elements of the opening / closing device mounting base 51. A locking piece 506 is formed on the upper piece 503, which is located outside the outer surface of the face portion 50 of the mounting base 5 and rises upward. A fixing piece 507 is formed below the second portion 50B, which is located below the lower piece 504 and extends horizontally.

[0022] [B-2] Drive shaft structure (winding shaft connection part) The drive shaft structure comprises a drive shaft assembly 3 provided on a surface portion 50 of a mounting base 5, and a cylindrical rotor 4 rotatably provided on the drive shaft assembly 3. As shown in Fig. 10, the drive shaft assembly 3 comprises a cylindrical or columnar first shaft portion 30, a second shaft portion 31 on the tip side of the first shaft portion 30, and a base 32 on which the base end side of the first shaft portion 30 is supported, and is provided on the mounting base 5 by fixing the base 32 to the surface portion 50 of the mounting base 5 (see Fig. 8).

[0023] The base 32 is made up of a rectangular surface 320 to which the base end of the first shaft 30 is fixed, side pieces 321, 322, 323, 324 extending from the four periphery sides of the surface 320 at right angles to the surface 320, and mounting pieces 325, 326 extending from the tips of the opposing side pieces 321, 322 in directions away from each other, and has a dish shape in side view (surface 320, side pieces 321, 322, mounting pieces 325, 326). Two insertion holes 327 are formed in each of the mounting pieces 325, 326, and two insertion holes 53 are formed in the surface 50 of the mounting base 5 located above the upper edge 520 of the opening 52, and two insertion holes 53 are formed below the lower edge 521 of the opening 52. The drive shaft assembly 3 is fixed with a rivet 328 in a state where the mounting pieces 325, 326 of the base 32 are abutted against the surface portion 50 of the mounting base 5 with the insertion hole 327 aligned with the insertion hole 53. The height dimension of the base 32 (the height dimension of the side pieces 321, 322) is such that the pair of rising pieces 11, 12 constituting the bearing abuts or is close to the inner surface of the surface portion 320 when the electric unit U is attached to the surface portion 10 of the bracket 1 (see FIG. 8). Note that screws may be used instead of the rivets 328, or welding may be used.

[0024] The first shaft portion 30 is a columnar or cylindrical member with a circular cross section, and has a groove portion 300 formed around the entire circumference on the tip side. A second shaft portion 31 having a smaller diameter than the first shaft portion 30 is formed on the tip side of the first shaft portion 30. A large-diameter tip portion 310 is integrally formed at the tip of the second shaft portion 31.

[0025] The drive shaft assembly 3 is fixed to the surface 50 of the mounting base 5 via the base 32 on the base end side. The cylindrical rotating body 4 is rotatably attached to the drive shaft assembly 3 fixed to the surface 50 of the mounting base 5. As shown in FIG. 8, the cylindrical rotating body 4 is composed of a hollow, substantially cylindrical main body 40 having an open base end side and a circular end face 42 on the tip end side, a sprocket 41 protruding in the outer circumferential direction at the base end side of the main body 40, i.e., a circumferentially provided sprocket 41, an insertion part 43 formed in the center of the end face 42, and two engagement pieces 44 protruding from the end face 42, the insertion part 43 being formed of a ring-shaped bush 430 fitted in the center of the end face 42. The number of engagement pieces 44 is not limited to two, as long as there are more than one.

[0026] The cylindrical rotating body 4 has the first shaft portion 30 and the base 32 (half of the height direction in the illustrated embodiment) built-in, and when the electric unit U is attached to the face portion 10 of the bracket 1, the tip portions of the pair of rising pieces 11, 12 that constitute the bearings are located inside the main body 40 of the cylindrical rotating body 4. In this way, the sprocket 41 of the cylindrical rotating body 4 is located closer to the face portion 10 of the bracket 1 than the tips of the rising pieces 11, 12 (see FIG. 8).

[0027] To motorize a manual shutter, it is necessary to provide an opening / closing mechanism M on the drive side bracket. When constructing an electric winding shaft, the opening / closing mechanism can be installed as a built-in opening / closing mechanism or a separate opening / closing mechanism. In this embodiment, a separate opening / closing mechanism is used, and the opening / closing mechanism M is fixed to the mounting base 5 in advance, so that it is prepared as one of the components of the electric unit U.

[0028] [C] Mounting the electric unit to the bracket The electric unit U of this embodiment is attached to the surface 10 of the bracket 1 with the bearings (a pair of raised pieces 11, 12) of the manual winding shaft received in the opening 52 formed in the surface 50 of the mounting base 5.

[0029] An upper locking piece 506 and a lower fixed piece 507 are formed on the surface 50 of the mounting base 5 of the electric unit U, and an opening 19 and a second outdoor-side bent piece 18 are formed in advance on the existing bracket 1. The electric unit U is attached to the surface 10 of the bracket 1 by fixing the lower fixed piece 507 to the second outdoor-side bent piece 18 (fixed part) of the bracket 1 with a screw 508 while the upper locking piece 506 is locked to the opening 19 (locked part) of the bracket 1. In this embodiment, as shown in FIG. 3, when the electric unit U is attached to the surface 10 of the bracket 1, a protruding part 5070 at the tip of the fixed piece 507 abuts against the surface 10 of the bracket 1, so that the mounting state of the electric unit U (mounting state of the opening / closing device M) is stable, and the linkage between the opening / closing device M and the sprocket 41 via the chain C is also stable.

[0030] In this embodiment, while the bearings (raised pieces 11, 12) of the bracket 1 remain, the raised pieces 11, 12 are received through the openings 52 in the surface portion 50 of the mounting base 5 of the electric unit U, which allows the surface portion 50 of the mounting base 5 to be brought closer to the surface portion 10 of the bracket 1, and the position of the sprocket 41 of the cylindrical rotating body 4 provided on the mounting base 5 to be brought closer to the surface portion 10 of the bracket 1 (see FIG. 3). Note that in this embodiment, the head of the rivet 328 and the surface portion 10 of the bracket 1 are close to or in contact with each other, so that movement of the rivet 328 in the direction toward the surface portion 10 of the mounting base 5 relative to the surface portion 10 of the bracket 1 is restricted.

[0031] When the electric unit U is attached to the bracket 1, the upper rising piece 11 is close to or in contact with the upper edge 520 of the opening 52, and the lower rising piece 12 is close to or in contact with the lower edge 521 of the opening 52. In addition, the tips of the pair of rising pieces 11, 12 are in contact with or in close proximity to the inner surface of the face portion 320 of the base 32 of the drive shaft assembly 3. In addition to the attachment portions (upper locking portion and lower fixed portion) between the electric unit U and the bracket 1, in the attached state, by bringing parts of the electric unit U (which may include the edge portion of the opening 52 of the mounting base 5 and the inner surface of the side piece 321) and the rising pieces 11, 12 of the bracket 1 into contact with or in close proximity, the attachment state of the electric unit U to the bracket 1 can be stabilized.

[0032] As shown in Fig. 8, the tip end portions of the pair of rising pieces 11, 12 are located inside the main body 40 of the cylindrical rotating body 4. This allows the sprocket 41 of the cylindrical rotating body 4 to be located closer to the face 10 of the bracket 1 than the tips of the rising pieces 11, 12, and as a result, the position of the chain C that electrically connects the sprocket 41 of the cylindrical rotating body 4 to the opening / closing device M can be located closer to the face 10 of the bracket 1 than the end of the slat S and the groove of the guide rail G in a plan view (see Fig. 2), making it possible to use an existing guide rail G and shutter curtain (slat S). In addition, the ends of the upper piece 500, the lower piece 501, and the rear piece 502 are located at approximately the same position as the chain C in a plan view, so that an existing shutter curtain can be used.

[0033] In this embodiment, the mounting portions (upper locking portion, lower fixed portion) between the electric unit U and bracket 1 are located on the outdoor side of the surface portion 10 of the bracket 1, and with the existing shutter case removed from the existing bracket 1, the electric unit U can be mounted from the outdoor side, making renovation work easy.

[0034] [D] Motorization of winding shaft [D-1] Drive shaft structure (winding shaft connection part) 8, the cylindrical rotor 4 has the first shaft portion 30 of the drive shaft assembly 3 mounted therein, and the first shaft portion 30 is rotatably supported by the insertion portion 43 of the cylindrical rotor 4. The tip side portion (including the groove portion 300) of the first shaft portion 30 is a protruding portion located outside the end face 42 of the cylindrical rotor 4, and the second shaft portion 31 is located on the tip side of the protruding portion. A washer 45 is provided on the base end side (closer to the end face 42 than the groove portion 300) of the tip side portion (protruding portion) of the first shaft portion 30, and a C-shaped retaining ring 46 is fitted in the groove portion 300. The washer 45 has a larger diameter than the C-shaped retaining ring 46 and the first shaft portion 30 and the second shaft portion 31 of the drive shaft assembly 3.

[0035] [D-2] Drive shaft structure (winding shaft connection part) and winding shaft connection The cylindrical rotating body 4 is connected to the drive side end of the winding shaft 2. The configuration of the electric winding shaft is known and is not shown, but the winding shaft 2 according to this embodiment is composed of an outer cylinder around which the slats S of the shutter curtain are wound, an inner cylinder extending inside the outer cylinder, and a resin or metal spacer fitted between the inner surface of the outer cylinder and the outer surface of the inner cylinder. In this embodiment, the inner cylinder and the driven shaft 20 are composed of a single continuous member. The inner cylinder is a fixed shaft, and the outer cylinder and the spacer are rotatable relative to the inner cylinder. A plurality of hollow engagement receiving portions are formed between the inner surface of the outer cylinder and the spacer at intervals in the circumferential direction, and an engagement piece 44 protruding from an end surface 42 of the cylindrical rotating body engages with the engagement receiving portion of the drive side end of the winding shaft 2, thereby connecting the cylindrical rotating body 4 and the drive side end of the winding shaft 2 and allowing them to rotate together.

[0036] The first shaft portion 30 of the drive shaft assembly 3 supports the cylindrical rotor 4, and the second shaft portion 31 is inserted into the internal space of the inner cylinder of the winding shaft 2, with the tip portion 310 abutting or adjacent to the inner circumferential surface of the inner cylinder. A sprocket 41 provided around the cylindrical rotor 4 is power-coupled to a sprocket of the opening / closing device M by a chain C, so that the cylindrical rotor 4 and the winding shaft 2 rotate together when driven by the opening / closing device M. [Explanation of symbols]

[0037] 1 Bracket 10 sides 11 Upper raised piece (bearing) 12 Lower raised piece (bearing) 18 2nd outdoor side bent piece (fixed part) 19 Opening (locked part) 2 Winding shaft 3 Drive shaft assembly (winding shaft connection part) 4. Cylindrical rotating body (winding shaft connection part) 41 Sprocket 5 Mounting stand 50 sides 51 Switchgear Mounting Base 52 Aperture 520 Upper edge 521 Lower edge 506 Locking piece 507 Fixed piece 508 Screw C-Chain M Opening Machine U Electric unit

Claims

1. a bracket having a bearing for a manual winding shaft; An electric unit attached to the bracket; It consists of: The electric unit includes a winding shaft connecting portion having a sprocket, an opening / closing device, a chain for connecting the sprocket and the opening / closing device, and a mounting base on which the winding shaft connecting portion and the opening / closing device are mounted, and the mounting base is attached to the bracket. Motorized bracket structure.

2. the winding shaft connecting portion is attached to a surface portion of the mounting base, The electric unit is attached to the bracket in a state in which a bearing of the manual winding shaft is received in an opening formed in a surface portion of the mounting base. The motorized bracket structure according to claim 1.

3. The bearing includes a pair of raised pieces, The edge of the opening of the mounting base abuts against or is adjacent to one or both of the pair of raised pieces. The motorized bracket structure according to claim 2.

4. The surface portion includes an upper locking piece and a lower fixing piece, The bracket has an upper locked portion and a lower fixed portion, The electric unit is attached to the bracket by fastening the lower fixing piece to the fixed portion by a fastening means while the upper locking piece is locked to the fixed portion. The motorized bracket structure according to any one of claims 1 to 3.

5. The locking piece and the fixing piece are located on the outdoor side of the surface portion, The opening is formed on the indoor side of the locking piece and the fixing piece. The motorized bracket structure according to claim 4.

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