JP6146024B2 - Shutter device - Google Patents

Description

  The present invention relates to a shutter device, and more particularly, to a structure of a jig mounting portion for lifting a shutter case that houses a shutter curtain.

  2. Description of the Related Art Conventionally, a shutter device is known in which a cylindrical winding body is rotatably supported in a shutter case housing chamber, and the winding body is driven to rotate by a motor to lower and lower a shutter curtain. In this type of shutter device, it is common to perform the installation work by lifting the shutter case at the installation location. A general-purpose eye bolt (suspending bolt) or a dedicated jig is used as the lifting jig, and a jig mounting portion for mounting the lifting jig is provided on the shutter case. When an eyebolt is used for the lifting jig, for example, a nut member into which a male screw of the eyebolt is screwed is welded to the shutter case to form a jig mounting portion. It is important that such a lifting jig and jig mounting portion are easy to attach and detach and have excellent safety in lifting work. Patent Documents 1 and 2 disclose technical examples regarding the structure of the lifting jig and the jig mounting portion of the shutter case.

  The shutter lifting jig of Patent Document 1 discloses the structure of a jig body that is mounted on the side of a long box-shaped shutter body (shutter case). The jig body is engaged with a latching portion for latching the lifting hook, a first latching claw latched with the first opening on the bottom surface of the shutter body, and a second opening on the top surface of the shutter body. A second locking claw to be stopped. Thus, it is described that the assembly man-hours can be reduced, and that the jig does not become an obstacle when a plurality of shutter bodies are installed in parallel.

  Moreover, the suspension metal fitting of patent document 2 is provided with a latching means and a slide control means, and is used in a locked state by being slid on the lifted member. As a result, it is possible to save the labor and parts of attaching the female screw portion (nut member) to the lifted member (shutter case) in advance, and the troublesome work of attaching and detaching the suspension bolt before and after construction is unnecessary. It is described that it is excellent in workability.

JP 2000-303752 A JP 2004-270438 A

  By the way, the lifting jig of Patent Document 1 is preferable in that it is relatively easy to attach and detach, but becomes a large size comparable to the side surface of the shutter body. Furthermore, the shape becomes complicated, and the cost of the lifting jig increases. In the example disclosed in the embodiment, the hanging metal fitting of Patent Document 2 is box-shaped and large. Furthermore, a suspension bolt is required at the upper part of the suspension fitting, and the structure for lifting is duplicated and complicated. Moreover, since both are dedicated jigs only for the lifted member having a specific shape, storage when not in use is troublesome. Furthermore, when the construction work of the shutter device is duplicated at a plurality of places, it is difficult to cope with the limited number of hands of the dedicated jig, which is inconvenient.

  The present invention has been made in view of the problems of the above-described background art, and while using a general-purpose lifting jig, the lifting jig can be easily attached and detached, has excellent safety in lifting work, and has a low cost. It is an object to be solved to provide a shutter device that can constitute the mounting portion.

The shutter device according to the present invention is provided with a pair of guide rails erected in parallel with each other and an upper end side of the pair of guide rails. A shutter device comprising: a shutter case having a jig mounting portion to be attached; and a shutter curtain housed in the housing chamber and opened while being guided by the pair of guide rails and closed. The lifting jig has a constricted portion between the lifting portion and the retaining portion, and the jig mounting portion of the shutter case is formed on the case plate material and the constricted portion of the lifting jig. A lifting part is inserted, the retaining part of the lifting jig in the lifting posture with the lifting part facing up is locked to restrict the removal of the lifting jig, and the lifting jig not in the lifting position is Only saw including a retaining groove to allow the mounting and removal of the lifting jig stop portion without engaging the lifting jig, the lifting unit, coupled to the lifting unit the even smaller diameter than that of the lifting unit The shaft portion is a constricted portion, and a retaining portion that is held around the shaft portion and is movable in the axial direction. The retaining groove has the lifting portion facing upward while the retaining portion is the shaft portion. Restricting the removal of the lifting jig in the lifting posture approaching the lifting portion by moving in the axial direction of the lifting, allowing the attachment and removal of the lifting jig before the retaining portion approaches the lifting portion, The shaft portion of the lifting jig has a male screw on the outer periphery, the retaining portion has a female screw on the inner periphery, and is screwed into the male screw of the shaft portion and can be screwed toward the lifting portion. And the retaining groove A first groove having a width that is narrower than the lifting portion and the nut member of the lifting jig and wider than the outer diameter of the shaft portion, and is connected to the horizontal portion of the case plate and the vertical portion descending from the outer edge of the horizontal portion. A lifting treatment before the nut member is screwed and formed in a slot or a second slot or open space having a groove width wider than that of the nut member and disposed below the lower end of the vertical portion of the first slot. The shaft portion of the tool is allowed to be inserted and removed from the second slot or the open space to the horizontal portion of the first slot and removed in the reverse direction, and the horizontal portion of the first slot The nut member is screwed to restrict removal of the lifting jig in the lifting posture in which the case plate is sandwiched between the lifting member and the lifting member.

  The shutter case may have side brackets that are part of the case plate and have the retaining groove on both side surfaces.

Furthermore, the length of the vertical portion of the first slot may be smaller than the length of the shaft portion of the lifting jig.

  Further, the shaft portion of the lifting jig has a neck lower portion smaller in diameter than the male screw between the lifting portion, and the groove width of the first slot of the retaining groove is the outer width of the male screw. It may be narrower than the diameter and wider than the outer diameter of the lower neck.

Furthermore, both edges of the casing board forming the vertical portion of the first slot of the retaining groove suppresses the rotation of the nut member of the lifting jig the inserted until the horizontal portion of the first slot It is preferable that the nut member also serves as a rotation restraining portion, and the nut member is screwed by rotating the lifting portion.

  In the shutter device of the present invention, the lifting jig has a constricted portion, and the jig mounting portion of the shutter case includes a retaining groove into which the constricted portion is inserted. The retaining groove locks the retaining portion of the lifting jig in the lifting posture and restricts the removal of the lifting jig, and does not latch the retaining portion of the lifting jig that is not in the lifting posture. Allow installation and removal. Therefore, the attachment operation and the removal operation can be performed only by changing the posture of the lifting jig. In other words, the lifting jig can be easily attached and detached. Furthermore, the retaining groove can be formed by simply processing the case plate material, and no separate parts are required, so that the jig mounting portion can be configured at low cost.

Furthermore, lifting jig because it has a retaining part which is movable in the axial direction of the shaft portion is switched whether to disconnect with the jig lifting by moving the position of the retaining portion on the shank. For this reason, attach the lifting jig in the state before the retaining part approaches the lifting part, and then bring the retaining part closer to the lifting part so that it does not come off by holding the case plate. Can do. Therefore, there is no possibility that the lifting jig is accidentally detached, and the safety of the lifting work is excellent.

Further comprising a shank externally threaded jig lifting a nut member retaining portion, the retaining groove is the first slot, and, Runode formed in the second slot or open space, lifting universal jig The eyebolts and nut members can be used in combination. For this reason, unlike the dedicated jig, there is no inconvenience of storing the lifting jig and inconvenience of a limited number of hands.
Further, in the aspect in which the shutter case has the side brackets on both side surfaces, the lifting operation of the entire shutter case can be performed by lifting the side bracket. At this time, the operation of attaching / detaching the lifting jig to / from the side bracket can be easily performed.

Furthermore, in the aspect in which the length of the vertical portion of the first slot is smaller than the length of the shaft portion of the lifting jig, the lifting jig is first placed in a lying position and inserted into the vertical portion of the first slot from below, and then The posture is changed to a raised posture while being inserted into one slot to the back. In other words, the lifting jig cannot be attached / detached in an upright state, so that there is no possibility of accidental removal, and the safety of the lifting work is further improved.

  In a mode in which the shaft portion of the lifting jig has a lower neck portion and the groove width of the first slot of the retaining groove is narrower than the outer diameter of the male screw and wider than the outer diameter of the lower neck portion, Only the lower part is allowed to enter the first slot. For this reason, even if the length of the vertical portion of the first slot is short, the lifting jig cannot be attached / detached in an upright state, so that it cannot be accidentally detached, and the safety of the lifting work is further improved. .

  Further, in the aspect in which both edges of the case plate material forming the vertical portion of the first slot also serve as the rotation restraining portion, no tool is required for the rotational drive of the nut member, and the lifting is performed by manually rotating the lifting portion. The jig can be held in a lifting position. Therefore, the attaching operation of the lifting jig can be performed very easily.

It is a front view which shows the whole structure of the shutter apparatus of 1st Embodiment of this invention. It is a perspective view which shows the structure of a shutter case. It is a perspective view which shows the structure of a side bracket. It is an expansion perspective view which shows the jig | tool attachment part provided in the side bracket. It is a figure which illustrates a lifting jig | tool, (A) is a perspective view, (B) is a front view. It is a perspective view explaining the operation method which attaches a lifting jig | tool to a jig attaching part in 1st Embodiment. It is a figure explaining the effect | action of the rotation suppression part of a jig | tool attachment part, (A) is a side view, (B) and (C) are the top views seen from the arrow Y direction of (A). It is an expansion perspective view which shows the jig | tool attachment part of 2nd Embodiment. It is an expansion perspective view which shows the jig | tool attachment part of 3rd Embodiment.

  A shutter device 1 according to a first embodiment for carrying out the present invention will be described with reference to FIGS. FIG. 1 is a front view showing the overall configuration of the shutter device 1 according to the first embodiment of the present invention. The shutter device 1 is provided for the purpose of opening and closing a doorway of a building. The shutter device 1 includes a pair of guide rails 91, a shutter case 92, a shutter curtain 96, and the like. FIG. 1 illustrates the extended closed state of the shutter curtain 96.

  The pair of guide rails 91 are erected in parallel and spaced apart on both the left and right sides in the width direction of the opening such as the doorway. A box-shaped shutter case 92 is disposed so as to be bridged over the upper ends of the pair of guide rails 91. Inside the shutter case 92, a housing chamber 93 for housing the shutter curtain 96 is formed, and a winding body 94 for winding the shutter curtain 96 is disposed. A lower frame 95 is provided so as to connect the lower ends of the pair of guide rails 91. With the above configuration, a rectangular shutter opening is formed.

  The shutter curtain 96 can extend from the accommodation chamber 93 and is disposed so as to be opened and closed by being guided by a pair of guide rails 91. The shutter curtain 96 is configured by vertically connecting a plurality of rectangular strip-like slats 97 that are horizontally long. The shutter curtain 96 has a seat plate 98 under the lower slat 97A. The seat plate 98 stabilizes the landing on the lower frame 95 of the shutter curtain 96. A slat 97 </ b> B at the upper end of the shutter curtain 96 is locked to the winding body 94. The individual slats 97 can be opened and closed and are provided with a blind function.

  The shutter case 92 includes a case body 2 including a pair of left and right side brackets 41 and 42 and a pair of left and right side caps 31 and 32. After the case body 2 is installed at the installation location, the side caps 31 and 32 are attached to the side brackets 41 and 42. FIG. 2 is a perspective view showing the structure of the shutter case 92, and internal members such as the winding body 94 are not shown. In FIG. 2, the left side cap 31 is removed from the left side bracket 41, and the right side cap 32 is fixedly attached to the right side bracket 42 not visible in FIG. FIG. 3 is a perspective view showing the structure of the side bracket 41.

  As shown in FIGS. 1 and 2, the case main body 2 includes a pair of left and right side brackets 41 and 42 and a case cover 21. As shown in FIG. 3, the side brackets 41 and 42 are provided with a support portion for supporting the winding body 94, a mounting seat for fixing the electric drive device 99, a jig mounting portion 5 described in detail later, and the like. It is a substantially plate-shaped member. The side brackets 41 and 42 are formed by, for example, performing a cutting process, a punching process, a bending process, or the like on the case plate material by a press machine. The side brackets 41 and 42 are directly fixedly attached to a housing such as a wall surface on the back side of the sheet of FIG. 1 or indirectly fixedly attached via a base member. The left and right side brackets 41 and 42 are disposed above the left and right guide rails 91, respectively, and are spaced apart from each other and parallel to each other.

The left and right side brackets 41 and 42 are symmetrical to each other, and will be described in detail below using the left side bracket 41 as an example. As shown in FIG. 3, the upper edge and the rear edge of the side bracket 41 are bent inwardly toward the center direction of the shutter device 1 to form an upper edge flange 411 and a rear edge flange 413 ( 3). Support portions 414 and 415 formed by rectangular holes are provided at two locations on the upper edge flange portion 411. Further, a jig mounting portion 5 is provided near the center of the upper edge flange 411. Further, a fixing portion 417 protruding toward the side cap 31 is provided near the front side of the lower end of the side bracket 41.

  The case cover 21 corresponds to the top plate and the front plate of the shutter case 92. As shown in FIGS. 1 and 2, the case cover 21 is formed by bending a rectangular thin plate wider than the width of the shutter curtain 96 from the horizontal direction to the vertical direction. Both edges in the width direction of the case cover 21 are attached from the upper edge to the front edge of the left and right side brackets 41 and 42. The case cover 21 and the pair of left and right side brackets 41 and 42 define the storage chamber 93 described above, and the shutter curtain 96 is held to be extendable.

  The winding body 94 is disposed in the accommodation chamber 93 and is supported by the left and right side brackets 41 and 42 so as to be rotatable around the axis AX. The winding body 94 can wind the shutter curtain 96 around the outer peripheral surface.

  The electric drive device 99 is disposed in a cylindrical internal space of the winding body 94, and one end on the left side in FIG. 1 is fixed to the side bracket 41. The electric drive device 99 has a drive motor 9A capable of switching between normal rotation and reverse rotation. A rotation transmission member 9B provided on the output shaft of the drive motor 9A rotates the inner periphery of the winding body 94. When the drive motor 9 </ b> A rotates in the forward direction, the winding body 94 is driven to rotate in the forward direction, and the shutter curtain 96 extends from the storage chamber 93. When the drive motor 9 </ b> A is reversed, the winding body 94 is driven to be reversed, and the shutter curtain 96 is wound up and accommodated in the accommodation chamber 93. Although omitted in FIGS. 1 and 2, the power supply line for supplying power to the electric drive device 99 and other control lines are routed using the space outside the side bracket 41.

  The pair of left and right side caps 31 and 32 are substantially rectangular lid members. The left and right side caps 31 and 32 are symmetrical to each other, and will be described in detail below using the left side cap 31 as an example. The upper edge, front edge, and rear edge of the side cap 31 are bent to form an upper edge flange 311, a front edge flange 312, and a rear edge flange 313 (see FIG. 2). The side cap 31 covers the side bracket 41 by having the flange portions 311, 312, and 313 on the three sides of the rectangle, and protects the end face of the electric drive device 99 and the wiring locations of the power supply line and the control line. Further, the side cap 31 also plays a role of improving the appearance of appearance.

  Claw-like supported portions 314 and 315 formed by bending downward are provided at two locations on the upper edge flange portion 311 of the side cap 31. A fixed portion 317 is provided on the inner surface facing the fixing portion 417 of the side bracket 41 at a position near the front side of the lower portion of the side cap 31. As indicated by broken line arrows R1 and R2 in FIG. 2, the supported portions 314 and 315 are engaged with the support portions 414 and 415 of the upper edge flange portions 411 of the side brackets 41 and 42. Accordingly, the side cap 31 is supported by being suspended from the side bracket 41 and swings to the attachment position. Further, as indicated by a broken line arrow R <b> 3 in FIG. 2, the fixed portion 317 contacts and is fixed to the fixing portion 417, and the side cap 31 is attached to the side bracket 41.

  Next, the jig attaching part 5 provided on the side bracket 41 and the lifting jig 6 attached to and detached from the jig attaching part 5 will be described in detail. FIG. 4 is an enlarged perspective view showing the jig mounting portion 5 provided on the side bracket 41. FIG. 5 is a diagram illustrating the lifting jig 6 by way of example, (A) is a perspective view, and (B) is a front view.

  As shown in FIG. 3, the jig mounting portion 5 is disposed near the center of the upper edge flange portion 411 of the side bracket 41. More specifically, the center portion immediately below the upper edge flange 411 of the case plate material is cut. The cut shape is composed of a two-step two side having a step and a lower side connecting lower ends of the two sides. The cut portion of the case plate is bent at the upper side along the upper edge flange 411. As a result, a second slot 56 having two steps of the groove width W2 and the groove width W3 is formed in the central portion immediately below the upper edge flange 411.

  Further, the portion of the case plate material that is bent while being connected to the upper edge flange 411 becomes a retaining stopper 51. The retainer locking portion 51 includes a plate material horizontal portion 52 extending horizontally outward in the direction opposite to the upper edge flange portion 411, and a plate material vertical portion 53 descending from the outer edge of the plate material horizontal portion 52.

A retaining hole 54 having a diameter D <b> 1 is formed so as to extend over both the plate material horizontal portion 52 and the upper edge flange 411. Further, a first slot 55 having a groove width W1 is formed so as to extend while being bent from the plate material horizontal portion 52 to the plate material vertical portion 53. The horizontal portion of the first slot 55 communicates with the retaining hole 54, and the vertical portion of the first slot 55 opens downward. Both edges 531 and 532 of the plate material vertical portion 53 forming the vertical portion of the first slot 55 also serve as a rotation restraining portion 58 described later. The groove width W1 of the first slot 55 is constant and smaller than the diameter D1 of the retaining hole 54. The length LH of the plate material horizontal portion 52 of the first slot 55 is the length LV of the plate material vertical portion 53 .

  The jig mounting portion 5 includes a retaining hole 54, a first slot 55 corresponding to the retaining groove of the present invention, and a second slot 56. The retaining hole 54 may be omitted, and the first slot 55 may be extended by that amount. The jig mounting portion 5 has sufficient mechanical strength so that the entire load of the case body 2 including the winding body 94, the electric drive device 99, the shutter curtain 96, and the like can be lifted at two places on the left and right. ing. In other words, in order to ensure sufficient mechanical strength, the material and thickness of the case plate material constituting the side bracket 41 are appropriately selected, and the dimensional specifications of the upper edge flange portion 411 and the retaining locking portion 51 are determined. Designed properly.

  As shown in FIG. 5, the lifting jig 6 is configured by combining an eye bolt 61 and a nut member 67. The eyebolt 61 is a general-purpose lifting jig, and for example, a standard product defined in “B1168 eyebolt” of Japanese Industrial Standard (JIS) or a nonstandard product having a shape outside the standard can be appropriately employed. The eye bolt 61 is formed by a lifting portion 62 and a shaft portion 63. The lifting part 62 has a ring shape with an outer diameter D5. The lifting portion 62 is lifted by being locked to a lifting hook or a lifting rope of the lifting device. The shaft portion 63 includes a neck lower portion 64 coupled to the lifting portion 62, and a male screw portion 65 in which a male screw is engraved on the outer periphery continuously to the neck lower portion 64. The outer diameter D6 of the neck lower portion 64 is smaller than the outer diameter D7 of the male screw portion 65, and the outer diameter D7 of the male screw portion 65 is smaller than the outer diameter D5 of the lifting portion 62 (D6 <D7 <D5). This is the length L5 of the shaft portion 63.

  The nut member 67 is a general-purpose product having a female screw on the inner periphery and a hexagonal outer periphery. This is the outer diameter D8 of the largest portion of the nut member 67. The nut member 67 is screwed into the male screw portion 65 of the eyebolt 61 and is rotated toward the lifting portion 62 when driven to rotate. The nut member 67 corresponds to the retaining portion of the present invention and is locked to the lower side of the case plate, and allows the case body 2 to be lifted by the lifting jig 6. The nut member 67 is preferably held so as not to drop off from the male thread portion 65 of the eyebolt 61. The nut member 67 may be detachable from the male screw portion 65, but in the present invention, the nut member 67 is used without being detached. The range where the nut member 67 of the male screw portion 65 is not screwed and the neck lower portion 64 correspond to the constricted portion of the present invention.

  In the first embodiment, the diameter D1 of the retaining hole 54 of the jig mounting portion 5 is smaller than the outer diameter D5 of the lifting portion 62 of the lifting jig 6 and larger than the outer diameter D7 of the male screw portion 65 ( D5> D1> D7). Further, the groove width W1 of the first slot 55 is narrower than the outer diameter D7 of the male screw portion 65 and wider than the outer diameter D6 of the neck lower portion 64 (D7> W1> D6). Furthermore, the two types of groove widths W2 and W3 of the second slot 56 are both wider than the outer diameter D8 of the nut member 67 (W2> D8, W3> D8). Further, the length LV of the vertical portion of the first slot 55 is smaller than the length L5 of the shaft portion 63 (LV <L5).

Next, an operation method of the shutter device 1 according to the first embodiment configured as described above will be described. First, an attaching operation method for attaching the lifting jig 6 to the jig attaching portion 5 will be described. FIG. 6 is a perspective view for explaining an operation method for attaching the lifting jig 6 to the jig attaching portion 5 in the first embodiment. As can be seen from the size relationship of the dimensions described above, only the neck lower portion 64 of the lifting jig 6 is allowed to enter the first slot. For this reason, even if the length LV of the vertical portion of the first slot 55 is shorter than the length L5 of the shaft portion 63, the lifting jig 6 cannot be inserted into the first slot while standing.

  Therefore, in the procedure 1 of the mounting operation, the lifting jig 6 is held in a laid posture as shown by the outline of the broken line in FIG. Then, as indicated by the broken arrow R 4, the lifting jig 6 is horizontally inserted toward the second slot 56, and the neck lower portion 64 of the lifting jig 6 is disposed directly below the vertical portion of the first slot 55. Next, in the procedure 2, as indicated by the broken line arrow R5, the lower neck portion 64 is inserted into the vertical portion of the first slot 55, and the entire lifting jig 6 is inserted upward. When the neck lower portion 64 enters the bent portion of the first slot 55, the posture changing operation is performed while the lifting jig 6 is turned upright. When the lifting jig 6 is completely erected, the lifting jig 6 almost enters the retaining hole 54. Next, in step 3, the nut member 67 is screwed and the plate material horizontal portion 52 and the upper edge flange portion 411 are sandwiched between the nut portion 67 and the lifting portion 62. Thereby, the lifting jig 6 is held in the final lifting posture, and the case body 2 can be lifted.

When the nut member 67 is screwed in the procedure 3, the lifting portion 62 of the lifting jig 6 is rotationally driven as shown in FIG. 7A and 7B are views for explaining the operation of the rotation restraining portion 58 of the jig mounting portion 5, wherein FIG. 7A is a side view, and FIGS. FIG. As shown in FIG. 7A, in the procedure 3, the lifting portion 62 is rotationally driven as indicated by an arrow R6 in a state where the lifting jig 6 is completely upright. At this time, it is preferable to rotationally drive the nut member 67 while pressing the nut member 67 against the plate material vertical portion 53 (pressing it in the right direction in the figure).

  When the lifting portion 62 is driven to rotate, the nut member 67 is pressed against both edges 531 and 532 of the plate material vertical portion 53. As a first pattern, as shown in FIG. 7B, one hexagonal surface 671 of the nut member 67 may be pressed so as to straddle both edges 531 and 532. Further, as the second pattern, as shown in FIG. 7C, two adjacent hexagonal surfaces 672 and 673 of the nut member 67 may be pressed against the respective edges 531 and 532. In either case, the rotation of the nut member 67 is suppressed. This action is the role of the rotation restraining portion 58 that serves as both edges 531 and 532.

Therefore, when the lifting part 62 is rotationally driven in the forward direction or the reverse direction, the nut member 67 advances or retracts without rotating together. Thereby, the screwing position of the nut member 67 and the eyebolt 61 is changed, and the eyebolt 61 is moved and the case plate can be sandwiched and released as indicated by an arrow R7.

  Moreover, what is necessary is just to follow the procedure reverse to attachment operation in the removal operation which removes the lifting jig | tool 6 from the jig attachment part 5. FIG. As described above, in the first embodiment, the lifting jig 6 can be attached to and detached from the jig mounting portion 5 without using a tool such as a spanner.

  Note that the above-described procedure 3 can be omitted in the operation of attaching the lifting jig 6. In this case, the lifting jig 6 does not sandwich the case plate material, and may move or turn slightly in the horizontal portion of the first slot 55. However, once a lifting hook, a lifting rope, or the like is once locked to the lifting portion 62, there is no possibility that the lifting jig 6 is accidentally detached during the lifting operation. Therefore, even if the procedure 3 is omitted, the case body 2 can be lifted while ensuring safety.

  In the shutter device 1 of the first embodiment, only the lower neck 64 of the lifting jig 6 is allowed to enter the first slot 55. For this reason, the lifting jig 6 is laid down in the procedure 1 of the mounting operation and inserted into the vertical portion of the first slot 55 from below, and the lifting posture is raised while inserting the first slot 55 into the back in the procedure 2 To change the posture. Then, the procedure 3 is omitted, and the attachment and detachment can be performed only by a simple operation of changing the posture of the lifting jig 6. And since there is no possibility that the lifting jig 6 will be accidentally detached during the lifting operation, safety can be ensured.

  Furthermore, if the procedure 3 is carried out, the lifting jig 6 clamps the case plate material, so that the safety of the lifting work is excellent. Here, since both edges 531 and 532 of the plate material vertical portion 53 also serve as the rotation restraining portion 58, the lifting portion 62 is manually rotated to screw the nut member 67, and the lifting jig 6 is finally moved. It can be in a lifting position. Therefore, the attaching operation of the lifting jig 6 can be performed very easily without using a tool.

  Further, the retaining hole 54, the first slot 55, and the second slot 56 to be the jig attaching portion 5 are formed by, for example, performing various processes on the case plate material by a press machine. Therefore, another component is unnecessary, and the jig mounting portion 5 can be configured at low cost. Furthermore, since the lifting jig 6 can be configured by combining a general-purpose eyebolt 61 and a nut member 67, unlike the dedicated jig, there is no troublesome storage of the lifting jig 6 and inconvenience of a limited number of hands.

  Next, another embodiment in which the structure of the jig mounting portion 5 is different will be described. FIG. 8 is an enlarged perspective view showing a jig mounting portion 5A of the second embodiment. FIG. 9 is an enlarged perspective view showing the jig mounting portion 5B of the third embodiment. In the second and third embodiments, the overall configuration of the shutter device 1 and the lifting jig 6 to be used are the same as those in the first embodiment, and only the structure of the jig mounting portions 5A and 5B provided on the side bracket 41 is provided. Is different.

  As shown in FIG. 8, the jig mounting portion 5A of the second embodiment is formed by only the first slot 55A corresponding to the retaining groove of the present invention. More specifically, the case plate material forming the side bracket 41 is cut and bent at a central portion immediately below the upper edge flange portion 411A to provide a retaining stopper 51A. The retainer locking portion 51A includes a plate material horizontal portion 52A extending horizontally outward in the direction opposite to the upper edge flange 411A, and a plate material vertical portion 53A descending from the outer edge of the plate material horizontal portion 52A.

A first slot 55A having a groove width W1A is formed to extend while bending from the plate material horizontal portion 52A to the plate material vertical portion 53A. The vertical portion of the first slot 55A opens toward the lower open space S. Both edges 533 and 534 of the plate material vertical portion 53A forming the vertical portion of the first slot 55A also serve as the rotation restraining portion 58A. The groove width W1A of the first slot 55A is constant, narrower than the outer diameter D8 of the nut member 67 of the lifting jig 6, and wider than the outer diameter D7 of the male screw portion 65 (D8>W1A> D7). Further, the length LVA of the plate material vertical portion 53A of the first slot 55A is longer than the length L5 of the shaft portion 63 (LVA> L5).

  As can be seen from the size relationship of the dimensions described above, in the second embodiment, the male thread portion 65 of the lifting jig 6 can pass through the first slot 55A from the dimension of the outer diameter D7. However, even if it is attempted to insert the lifting jig 6 into the first slot 55A while standing, the length L5 of the shaft portion 63 is insufficient, so that the nut member 67 screwed into the shaft portion 63 is perpendicular to the plate material. It cannot be inserted in contact with the portion 53A.

Therefore, in the mounting operation, as in the first embodiment, the lifting jig 6 is held in a lying position, the male screw portion 65 is inserted into the vertical portion of the first slot 55A above the open space S, and the lifting jig 6 Insert the whole of. When the male thread portion 65 enters the bent portion of the first slot 55A, the posture is changed while the lifting jig 6 is turned upright and inserted to the innermost portion of the horizontal portion of the first slot 55A. Next, the nut member 67 is screwed and the plate material horizontal portion 52 </ b> A and the upper edge flange 411 </ b> A are sandwiched between the lifting portion 62 . At this time, similarly to the first embodiment, the rotation restraining portion 58A is used. Thereby, the lifting jig 6 is held in the final lifting posture, and the case body 2 can be lifted.

  Note that the screwing of the nut member 67 may be omitted. In the second embodiment, the neck portion 64 of the lifting jig 6 is not required, and the male screw portion 65 may be directly coupled to the lifting portion 62.

  As shown in FIG. 9, the jig attachment portion 5B of the third embodiment is formed directly on the bent portion of the upper edge flange portion 411B. More specifically, the first slot 55B having a groove width W1B is formed so as to bend and extend from the upper edge flange portion 411B of the case plate member forming the side bracket 41 to the plate member vertical portion 53B. Both edges 535 and 536 of the plate material vertical portion 53B forming the vertical portion of the first slot 55B also serve as the rotation restraining portion 58B. Further, a rectangular second slot 56B having a groove width W2B is formed so as to be continuous with the lower end of the vertical portion of the first slot 55B. The jig mounting portion 5B is formed of a first slot 55B and a second slot 56B corresponding to the retaining groove of the present invention.

  The groove width W1B of the first slot 55B is constant, narrower than the outer diameter D7 of the male thread portion 65 of the lifting jig 6, and wider than the outer diameter D6 of the neck lower portion 64 (D7> W1B> D6). The length LVB of the vertical portion of the first slot 55B is smaller than the length L5 of the shaft portion 63 (LVB <L5). The groove width W2B of the second slot 56B is constant, wider than the groove width W1B of the first slot 55B, and wider than the outer diameter D8 of the nut member 67 (W2B> W1B, W2B> D8). As can be seen from the size relationship of the above-described dimensions, in the third embodiment, only the neck lower part 64 of the lifting jig 6 is allowed to enter the first slot 55B.

Therefore, in the mounting operation, as in the first embodiment, the lifting jig 6 is held in a lying position, inserted horizontally toward the second slot 56B, and the neck lower portion 64 of the lifting jig 6 is inserted into the first slot 55B. Place directly below the vertical part of Next, the neck lower portion 64 is inserted into the vertical portion of the first slot 55B, and the entire lifting jig 6 is inserted upward. Then, when the neck lower portion 64 enters the bent portion of the first slot 55B, the posture is changed while the lifting jig 6 is turned upright and inserted to the innermost portion of the first slot 55B. Next, the nut member 67 is screwed and the upper edge flange 411 is sandwiched between the lifting portion 62 and the nut member 67. At this time, similarly to the first embodiment, the rotation restraining portion 58B is used. Thereby, the lifting jig 6 is held in the final lifting posture, and the case body 2 can be lifted. Note that the screwing of the nut member 67 may be omitted.

  In the second and third embodiments, the same effect as that of the first embodiment is generated, and the structure of the jig mounting portions 5A and 5B is further simplified to form the jig mounting portions 5A and 5B at a low cost. it can.

  In addition, the arrangement | positioning position of the jig attachment parts 5, 5A, and 5B in each embodiment is not limited to the center vicinity of the upper edge collar part 411, 411A, and 411B of the side bracket 41, The case main body 2 can be lifted. It may be the position. Further, the groove shapes of the first slots 55, 55A, 55B and the second slots 56, 56B can be modified. Various other applications and modifications are possible for the present invention.

1: Shutter device 2: Case main body 21: Case cover 31, 32: Side cap 41, 42: Side bracket 411: Upper edge flange 413: Rear edge flange 5, 5A, 5B: Jig mounting portion 51, 51A: Retaining locking part 52, 52A: Plate material horizontal portion 53, 53A, 53B: Plate material vertical portion 54: Retaining hole 55, 55A, 55B: First slot (retaining groove)
56, 56B: Second slot 58, 58A, 58B: Rotation restraint part 6: Lifting jig 61: Eye bolt 62: Lifting part 63: Shaft part 64: Lower neck part 65: Male thread part 67: Nut member:
91: Guide rail 92: Shutter case 96: Shutter curtain W1, W2, W3, W1A, W1B, W2B: Groove width LV: Length of the vertical portion of the first slot L5: Length of the shaft portion D5: Outside of the lifting portion Diameter D6: Outer diameter of neck lower part D7: Outer diameter of male screw part D8: Outer diameter of nut member S: Open space

Claims (5)

A pair of guide rails standing in parallel and spaced apart;
A shutter case that is disposed on the upper end side of the pair of guide rails, has a housing chamber defined therein by a case plate, and has a jig mounting portion for mounting a lifting jig;
A shutter curtain that is accommodated in the accommodation chamber and is in an open state and is extended while being guided by the pair of guide rails and is in a closed state,
The lifting jig has a constricted portion between the lifting portion and the retaining portion,
The jig mounting portion of the shutter case is formed on the case plate material, the constricted portion of the lifting jig is inserted, and the retaining portion of the lifting jig in a lifting posture with the lifting portion facing up is engaged. sealed to regulate the removal of the lifting jig, it viewed including the retaining groove to allow the mounting and removal of the lifting jig to the retaining portion of the lifting jig not the lifting posture without engagement,
The lifting jig includes the lifting portion, a shaft portion coupled to the lifting portion and having a smaller diameter than the lifting portion and serving as the constricted portion, and a retaining portion that is held around the shaft portion and is movable in the axial direction. Consists of
The retaining groove regulates the removal of the lifting jig in a lifting posture in which the retaining portion moves in the axial direction of the shaft portion and approaches the lifting portion with the lifting portion facing upward, and the retaining portion Allows attachment and removal of the lifting jig before approaching the lifting part,
The shaft portion of the lifting jig has a male screw on the outer periphery, and the retaining portion has a female screw on the inner periphery and is screwed into the male screw of the shaft portion and can be screwed toward the lifting portion. Is a member,
The retaining groove is
A first slot having a groove width that is narrower than the lifting portion and the nut member of the lifting jig and wider than the outer diameter of the shaft portion, connected to a horizontal portion of the case plate and a vertical portion descending from an outer edge of the horizontal portion. And formed in a second slot or open space having a groove width wider than that of the nut member and disposed below a lower end of a vertical portion of the first slot,
Allowing the shaft portion of the lifting jig before the nut member to be screwed into the second slot or the open space to the horizontal portion of the first slot, and allowing the removal to operate in the reverse direction; and A shutter device for restricting removal of a lifting jig in a lifting posture in which the nut member is screwed at the horizontal portion of the first slot and the case plate is sandwiched between the lifting member and the lifting member.   The shutter device according to claim 1, wherein the shutter case has side brackets that are part of the case plate and have the retaining groove on both side surfaces. The shutter device according to claim 1 or 2 , wherein a length of a vertical portion of the first slot is smaller than a length of the shaft portion of the lifting jig. The shaft portion of the lifting jig has a neck lower portion smaller in diameter than the male screw between the lifting portion and the groove width of the first slot of the retaining groove is larger than the outer diameter of the male screw. The shutter device according to any one of claims 1 to 3, wherein the shutter device is narrower and wider than an outer diameter of the lower neck portion. Both edges of the case plate forming the vertical portion of the first slot of the retaining groove are pivoted to prevent the nut member of the lifting jig inserted up to the horizontal portion of the first slot. The shutter device according to any one of claims 1 to 4 , which also serves as a suppressing unit, and the nut member is screwed by rotating the lifting unit.

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