JP5566807B2 - Overhead door - Google Patents

Description

  The present invention relates to an overhead door that opens and closes an opening, such as a doorway of a building structure such as a building, with a shutter curtain configured by connecting a required number of panels in a freely bendable manner.

  There is a shutter device as an opening and closing means for opening and closing an opening of a building structure such as a building, and there is an overhead door as one of the shutter devices, in which the shutter curtain bends the required number of panels. The shutter curtain is moved up and down along the guide rail, and the shutter curtain is stored along the ceiling surface when opened.

  In the overhead door, the weight of the shutter curtain is balanced by the upward biasing force of the balance spring to reduce the load on the opening / closing device when the shutter curtain is opened / closed.

  FIG. 10 shows the relationship between a balance spring and a shutter curtain in a conventional overhead door.

  A winding drum shaft 1 is rotatably provided above an opening (not shown), and a wire 3 is wound around a winding drum 2 fixed to both ends of the winding drum shaft 1. The wire 3 is fed out from the take-up drum 2, and the lower end of the wire 3 is engaged with the lowermost panel 5 of the shutter curtain 4.

  The take-up drum shaft 1 is provided with a balance spring 6, and the balance spring 6 biases the take-up drum 2 through the take-up drum shaft 1 in the direction in which the wire 3 is taken up. Accordingly, a lifting force is applied to the shutter curtain 4 through the wire 3, and the weight of the shutter curtain 4 is balanced by the balance spring 6 through the wire 3.

  The balance spring 6 is a torsion coil spring, which is twisted as many times as necessary when the shutter curtain 4 is in a closed state, adjusted to generate an initial torque that balances with the dead weight of the shutter curtain 4, and in the twisted state. A wire 3 is stretched between the lower end of the panel 5 and the winding drum 2. The length of the wire 3 is set by indexing from the size of the opening at the time of designing. However, if the length of the wire 3 matches at the time of assembly on site due to an error on the housing side or an assembly error. Is not limited. Therefore, the wire length adjustment work at the installation site is required.

  As a conventional adjustment method, an extra length is provided on the take-up drum 2 side, and the extra wire 3 'remaining after the adjustment is wound around the take-up drum 2 a plurality of times (discarded), and then the take-up drum 2 is extended to the balance spring 6 side and wound around the take-up drum shaft 1.

  For this reason, the adjustment of the length of the wire 3 involves the rework of the littering work and the processing of the extra length wire 3 ', and the work is complicated and the work is a high place work, and the burden on the operator is large. there were.

Japanese Utility Model Publication No. 58-49792

  In view of such circumstances, the present invention is easily attached to the lower end of the shutter curtain, and can easily adjust the length of the wire that applies a lifting force to the shutter curtain. To improve.

  The present invention relates to a shutter curtain configured by flexibly connecting a required number of panels, a winding drum provided at both ends of a shaft and biased in a winding direction by a balance spring, and the winding drum. The overhead door has a wire wound at the lower end and engaged with the lowermost panel of the shutter curtain, and the engagement position of the lower end of the wire can be changed in the vertical direction.

  According to the present invention, a wire hooking member is provided at the lower end of the width end face of the panel, and the wire is attached to the overhead door that is hooked to the width end face above the wire hooking member after the wire hooking member is hung. It is concerned.

  According to the present invention, a latch member is fixed to the lower end of the wire, and a plurality of wire locking holes are formed at a predetermined pitch in the vertical direction on the width end surface of the panel, and the wire locking holes are circular holes. And a slit hole extending continuously downward from the circular hole. The latch member can be inserted into and removed from the circular hole, and the wire can be inserted into the slit hole and the latch member is locked. It relates to an overhead door that is designed to be used.

  Further, according to the present invention, a hooking member is fixed to the lower end of the wire, and a wire engaging tool bent in an L-shape extending from the back surface of the panel to the width end surface is detachably attached to the width end portion of the panel. In addition, the attachment position of the wire anchoring tool can be changed in the vertical direction, and a wire locking hole is formed in a side surface of the wire anchoring tool. The wire locking hole includes a circular hole and the circular hole. An overhead door in which the retaining member can be inserted into and removed from the circular hole, the wire can be inserted into the slit hole, and the retaining member is locked. It is related to.

  According to the present invention, a second wire hooking member is fixed above the wire hooking member, and at least one wire locking hole is formed between the wire hooking member and the second wire hooking member. After the lower end of the wire is hooked on the wire hooking member, the lower end of the wire can be locked in the wire hooking hole, and after being hooked on the wire hooking member and the second wire hooking member, The present invention relates to an overhead door configured to be lockable.

  Also, the present invention is such that a wire engaging tool bent in an L shape extending from the back surface of the panel to the width end surface is detachably attached to the width end portion of the panel. The wire engaging tool can be mounted in an up-and-down direction, a wire engaging pin projects from a side surface of the wire engaging tool, and the loop is attached to the overhead door that is detachable from the wire engaging pin. It is concerned.

  According to the present invention, a shutter curtain configured by flexibly connecting a required number of panels, a winding drum provided at both ends of the shaft and biased in a winding direction by a balance spring, and the winding drum A wire wound around a drum and having a lower end engaged with the lowermost panel of the shutter curtain, and the engagement position of the lower end of the wire can be changed in the vertical direction. By changing the length of the wire, it is possible to adjust the length of the wire, and it is not necessary to adjust the length of the wire on the winding drum side, so that workability is improved and work at a high place is eliminated, and safety is improved.

  According to the present invention, the wire hanging member is provided at the lower end of the width end surface of the panel, and the wire is engaged with the width end surface above the wire hanging member after the wire hanging member is hung. The acting point of the ascending force acting on the panel via the wire is constant at the lower end of the shutter curtain, and even when the length of the wire is adjusted, the balance state by the balance spring does not change.

  According to the present invention, a latch member is fixed to the lower end of the wire, and a plurality of wire locking holes are formed at a predetermined pitch in the vertical direction on the width end surface of the panel. It consists of a circular hole and a slit hole extending continuously downward from the circular hole. The retaining member can be inserted into and removed from the circular hole, and the retaining member can be inserted into the slit hole. Since it is designed to be locked, the locking position of the lower end of the wire can be easily changed without using a tool.

  Further, according to the present invention, a latch member is fixed to the lower end of the wire, and the wire engaging tool bent in an L shape extending from the back surface of the panel to the width end surface can be attached to and detached from the width end portion of the panel. The wire anchoring tool can be mounted in an up-and-down direction, and a wire locking hole is formed in a side surface of the wire anchoring tool. It consists of a slit hole that continues to the circular hole and extends downward. The hook member can be inserted into and removed from the circular hole, and the wire can be inserted into the slit hole and the hook member is locked. Therefore, the wire length can be finely adjusted by finely changing the attachment position of the wire anchoring tool.

  According to the invention, the second wire hanging member is fixed above the wire hanging member, and at least one wire locking hole is formed between the wire hanging member and the second wire hanging member, After the lower end of the wire is hooked on the wire hooking member, the wire can be locked in the wire hooking hole, and after being hooked on the wire hooking member and the second wire hooking member, the wire hooking Since it is configured to be able to be locked in the hole, two length adjustments are possible for one wire locking hole, and the adjustment margin of the wire is increased.

  According to the present invention, a lower end of the wire is formed in a loop, and a wire anchoring tool that is bent in an L shape from the back surface of the panel to the width end surface is detachably attached to the width end portion of the panel, In addition, the attachment position of the wire engagement tool can be changed in the vertical direction, a wire engagement pin projects from the side surface of the wire engagement tool, and the loop is detachable from the wire engagement pin. The wire lower end processing is easy, the wire lower end is easily engaged with the wire engaging pin, and the wire length can be finely adjusted by finely changing the mounting position of the wire engaging tool. Exhibits excellent effects such as being possible.

It is a schematic perspective view of the overhead door by which this invention is implemented. It is the same front sectional view. It is an expansion perspective view of the shutter curtain lower end part which shows a 1st Example. FIG. It is the same front side view. (A) is the fragmentary figure of the wire lower end which shows the edge part process of the wire used for 1st Example, (B) is an AA arrow line view of FIG. 6 (A). It is an expansion perspective view of the shutter curtain lower end part which shows a 2nd Example. (A) (B) is a side view of the shutter curtain lower end part which shows a 3rd Example, respectively. It is a principal part perspective view which shows the 4th Example. It is explanatory drawing which shows a prior art example.

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

  First, referring to FIGS. 1 and 2, an overhead door according to an embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was shown in FIG.

  A vertical guide rail 11 is provided along both side pillars 9 of the opening 8 of the housing such as a building, and a horizontal guide rail 12 is provided along the ceiling. The vertical guide rail 11 and the horizontal guide rail 12 are curved. The rails 13 are connected. A horizontal take-up drum shaft 1 and the like are provided above the vertical guide rail 11.

  The shutter curtain 4 is formed by connecting a required number of panels 5 so as to be bendable. Guide rollers 22 are rotatably provided at both ends of each panel 5 via a support shaft (not shown).

  The guide roller 22 is movably fitted to the vertical guide rail 11, the curved rail 13, and the horizontal guide rail 12, and the shutter curtain 4 includes the vertical guide rail 11, the curved rail 13, and the horizontal guide. It can slide along the rail 12.

  The take-up drum shaft 1 is rotatably provided on the housing side (side pillar 9 in the figure) via a bracket 15. A winding drum 2 is provided at both ends of the winding drum shaft 1, and a wire 3 wound around the winding drum 2 is engaged with a lowermost panel 5 of the shutter curtain 4. The take-up drum shaft 1 is provided with a balance spring 6, which urges the shutter curtain 4 in the upward direction via the wire 3.

  When the opening 8 is opened, the winding drum 2 is rotated via the winding drum shaft 1 to wind the wire 3, and the shutter curtain 4 is moved along the vertical guide rail 11. It is pulled up and further stored in the horizontal guide rail 12.

  When the opening 8 is closed, the winding drum 2 is rotated in the reverse direction via the winding drum shaft 1, the wire 3 is fed out and the shutter curtain 4 is lowered, and the opening Part 8 is closed.

  In this embodiment, the length of the wire 3 is adjusted at the lower end side of the wire 3 when the overhead door is installed.

  A first embodiment of the present invention will be described with reference to FIGS. 3 to 5 show the width end portion of the lowermost panel 5 in an enlarged manner.

  A roller support member 18 is fixed to the lower end of the width end of the panel 5, for example, the lower end of the vertical rod 17. The roller support member 18 has an L-shaped cross section, and one surface (side surface) 18a of the roller support member 18 is in contact with the width end surface of the panel 5 (width end surface 17a of the vertical rod 17). The roller support member 18 is attached so that the back surface 18b of the roller support member 18 is in contact with the back surface of the panel 5 (the back surface 17b of the vertical rod 17).

  A guide roller pin 21 is fixed to a back surface 18b of the roller support member 18 via a bearing member 19, and a guide roller 22 is rotatably attached to the guide roller pin 21. The guide roller 22 is fitted to the vertical guide rail 11 so as to be able to roll.

  A wire hooking member 23 is fixed to the lower end of the width end surface 17a of the vertical rod 17 through the side surface 18a of the roller support member 18. The guide roller pin 21 extends further from the wire hooking member 23 so that the wire hooking member 23 and the guide roller 22 do not interfere with each other. The shape of the wire hooking member 23 is a disk shape, and a concave groove (not shown) is formed on the peripheral surface, and the wire 3 is fitted into the concave groove. In addition, when the roller support member 18 has a flat plate shape and the side surface 18a can be omitted, the wire hooking member 23 may be directly attached to the width end surface 17a.

  At least three wire locking holes 24 are formed at a predetermined pitch above the wire hooking member 23 on the width end surface 17a of the vertical rod 17 and at a position not interfering with the side surface 18a. The pitch P of the wire locking holes 24 is, for example, a circumferential length corresponding to ¼ rotation of the winding drum 2.

  The shape of the wire locking hole 24 is a keyhole formed by a circular hole and a slit hole extending vertically downward from the lower end of the circular hole, and the circular hole is fixed to the lower end of the wire. A stop member (described later) 25 can be inserted and removed, and the width of the slit hole is larger than the diameter of the wire 3 and smaller than the diameter or width of the hook member 25.

  The hooking member 25 is fixed to the lower end of the wire 3. As an example of the latching member 25, there is a sleeve 26 shown in FIG. 6. The wire 3 and the fastening wire 27 are inserted into the sleeve 26. The sleeve 26 is caulked and the wire 3 and the fastening wire 27 are inserted. And conclude. It should be noted that the fastening wire 27 can be omitted if the sleeve 26 is crimped only by inserting the wire 3 through the sleeve 26 and a sufficient crimping force is obtained between the wire 3 and the sleeve 26. Moreover, although the said fastening wire 27 used the commercially available thing, you may manufacture separately for the said latching members 25. FIG.

  Further, the state in which the sleeve 26 is crimped to the wire 3 and the fastening wire 27 is set so that the fastening wire 27 does not protrude from the upper end of the sleeve 26.

  The wire 3 suspended from the winding drum 2 is wound around the wire hooking member 23, and the sleeve 26 is inserted into the upper wire locking hole 24. When tension is applied to the wire 3 in a state where the sleeve 26 is inserted into the wire locking hole 24, the tip (lower end) of the wire 3 is pulled downward, and the wire 3 is pulled to the wire locking hole 24. Fits into the slit hole. Since the sleeve 26 is thicker than the width of the slit hole, the lower end of the wire 3 is engaged with the wire locking hole 24 via the sleeve 26.

  The position of the wire locking hole 24 is preferably located on the wire 3 side (surface side of the panel 5) with respect to the vertical line in contact with the concave groove of the wire hooking member 23. As a result, the amount of the wire 3 to be wound around the wire hooking member 23 becomes large, and even when the tension of the wire 3 fluctuates, it is difficult to come off.

  Hereinafter, the adjusting operation of the wire 3 in the first embodiment will be described.

  The lowermost panel 5 is grounded to the ground, and the balance spring 6 is restrained so that the urging force of the balance spring 6 does not act on the winding drum 2.

  The design dimension of the wire 3 is the length engaged with the central wire locking hole 24 out of the wire locking holes 24. It may not be optimal to engage the wire locking hole 24.

  In this case, the engagement position of the lower end of the wire 3 is changed to another wire locking hole 24. When the distance to the position of the lower end of the panel 5 is longer than expected, the panel 5 is engaged with the lower wire locking hole 24 as shown in FIGS.

  Further, even when the urging force of the balance spring 6 varies, the adjustment is performed in the same manner, and when it is desired to increase the urging force, the initial torque of the balance spring 6, that is, the initial torsional rotational speed is increased. If the number of torsional rotations is increased, more wires 3 are drawn out, so that the lower end of the wire 3 is engaged with the upper wire locking hole 24 to increase the initial torque to the panel 5. It can be engaged, and the lifting force of the panel 5 by the balance spring 6 can be increased.

  Similarly, when the initial torque is set to be small, the lower end of the wire 3 may be engaged with the lower wire locking hole 24. After the engagement is completed, the restraint of the balance spring 6 is released, and the ascending force by the balance spring 6 is applied to the shutter curtain 4.

  Thus, according to the first embodiment, there is no need to adjust the length of the wire 3 on the winding drum 2 side, and a hole for engaging the lower end of the wire 3 with the lowermost panel 5 is provided. Only by selection, the length from the winding drum 2 to the lower end of the wire 3 can be adjusted. Further, the work is work on the ground, and there is no need for wire cutting or the like, and it is only necessary to change the lower end, so it is simple and safe.

  FIG. 7 shows a second embodiment. In FIG. 7, the same components as those shown in FIG. 3 are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, the length of the wire 3 can be adjusted more finely.

  A slit-shaped escape hole 28 extending in the vertical direction is formed in the width end surface 17 a of the vertical rod 17. The vertical dimension of the escape hole 28 is the same as or larger than the adjustment allowance of the wire 3, and the width dimension is the same as or slightly larger than the diameter of the circular hole of the wire locking hole 24 described later. A wire engaging tool 29 having an L-shaped cross section is attached to the upper side of the roller support member 18 of the vertical rod 17, and the wire engaging device 29 extends from the back surface 17 b of the vertical rod 17 to the width end surface 17 a. In contact therewith, the back surface 17b is fixed by a fixing tool 31 such as a bolt.

  A wire locking hole 24 is formed in a side surface 29a of the wire anchoring tool 29, and the wire locking hole 24 is formed in the escape hole 28 in a state where the wire anchoring tool 29 is attached to the vertical rod 17. It matches. In addition, by making the material of the wire engaging tool 29 stronger than the width end surface 17a, the wire locking hole 24 is reinforced, and when the wire 3 is subjected to a large tension, the wire locking hole 29 is strengthened. 24 is prevented from being damaged. Further, even when the wire locking hole 24 or the like is deformed, it can be easily dealt with by replacing the wire engaging tool 29.

  Further, screw holes 32 into which the fixing tool 31 is screwed are formed at a predetermined pitch in the back surface 17b, and the fixing position of the fixing tool 31 is changed according to the position of the screw hole 32. It is possible. Preferably, the pitch of the bolt mounting holes of the wire engagement tool 29 is Q, and the pitch of the screw holes 32 drilled in the back surface 17b is Q '. By making the pitch Q and the pitch Q ′ the same, the mounting position can be changed by one pitch.

  In the drawing, one wire locking hole 24 is drilled in the wire anchoring tool 29. However, a plurality of holes may be drilled in the vertical direction. The vertical pitch may be different from the pitch Q of the bolt mounting holes, for example, Q / 2.

  As for the engagement work of the wire 3, the engagement is completed by inserting the sleeve 26 into the wire locking hole 24. As for the length adjustment of the wire 3, the mounting position of the wire engaging tool 29 is changed as described above.

  Further, the escape hole 28 may be formed into a plurality of round holes instead of a slit shape, and the round holes may be aligned with the wire locking holes 24 at each attachment position of the wire engaging tool 29.

  A third embodiment will be described with reference to FIG. In FIG. 8, the same components as those shown in FIG. 3 are denoted by the same reference numerals. In FIG. 8, the guide roller 22 is omitted.

  In the third embodiment, at least one (two in the drawing) wire locking holes 24 ′ are formed in the width end surface 17 a of the vertical rod 17, and the second wire is hooked above the wire locking holes 24 ′. The member 33 is fixed. The second wire hooking member 33 is circular, and a concave groove (not shown) is formed on the peripheral surface thereof, and the wire 3 can be fitted into the concave groove.

  The shape of the wire locking hole 24 ′ is such that two slits extending vertically upward and downward from both the circular hole and the upper and lower positions of the circular hole are formed, and the sleeve 26 is formed in the wire locking hole 24 ′. After the wire is inserted, the lower end of the wire 3 can be engaged with the wire locking hole 24 ′ regardless of whether the upper or lower tension acts on the wire 3.

  FIG. 8A shows a state in which the wire 3 is engaged with the lower wire locking hole 24 '. Further, since the wire 3 is engaged with the upper wire locking hole 24 ′, the length of the wire 3 can be adjusted to be short by the distance between the wire locking holes 24 ′ and 24 ′.

  FIG. 8B shows a state in which the wire 3 is hooked on the wire hooking member 23 and the second wire hooking member 33 and then hooked into the upper wire locking hole 24 ′. Since the wire 3 is hooked on the second wire hooking member 33, the wire 3 can be adjusted to be shorter by the hooked amount.

  Further, when the wire 3 is hooked on the second wire hooking member 33 and is engaged with the lower wire locking hole 24 ′, the wire is moved by a distance of the wire locking holes 24 ′ and 24 ′. The length of 3 can be adjusted even shorter.

  By providing the second wire hooking member 33 on the upper side of the wire locking hole 24 ', the length can be adjusted twice as many as the number of the wire locking holes 24'.

  In addition, after the wire 3 is hooked on the wire hooking member 23, the wire 3 is not hooked on the second wire hooking member 33, but is engaged with the upper wire locking hole 24 ', and the wire 3 After the wire is hooked on the wire hooking member 23 and the second wire hooking member 33, the difference in length from the state of being hooked on the upper wire locking hole 24 'is the upper and lower locking holes 24'. , 24 'is preferably the same as the interval between them.

  FIG. 9 shows a fourth embodiment.

  In the fourth embodiment, the wire anchoring tool 29 in the second embodiment shown in FIG. 7 is changed to a wire anchoring tool 35, and the processing of the lower end of the wire 3 is looped by the sleeve 26. It has been concluded.

  A hole 36 is formed in the wire engaging member 35 so as to be screwed into the screw hole 32 (see FIG. 7) with a bolt. A wire engaging pin 37 is provided on a side surface 35a of the wire engaging member 35. It is erected. The wire engaging pin 37 has a flange 37a formed at the tip thereof to prevent the wire 3 from coming off.

  A loop 38 is formed at the tip of the wire 3, and the loop 38 is enlarged in a circular shape so that the flange 37 a can be inserted. When no external force is applied to the loop 38, the loop 38 has a flat shape. The minimum inner diameter of the loop 38 is smaller than the diameter of the flange 37a.

  Referring to FIG. 7, after the wire hooking member 23 is looped, the loop 38 is inserted into the wire engaging pin 37, and the lower end of the wire 3 is engaged with the wire engaging pin 37. When adjusting the length of the wire 3, the attachment position of the wire anchoring tool 35 with respect to the vertical rod 17 is changed.

  In the fourth embodiment, the wire hooking member 23 may be omitted, and the loop 38 may be directly engaged with the wire engaging pin 37.

  As described above, in the present invention, the length of the wire 3 is adjusted by changing the mounting position of the lower end of the wire 3 with respect to the panel 5, so that workability is improved and safety is ensured for work in low places. Improves.

DESCRIPTION OF SYMBOLS 1 Winding drum shaft 2 Winding drum 3 Wire 4 Shutter curtain 5 Panel 17 Vertical shaft 18 Roller support member 24 Wire locking hole 25 Latching member 26 Sleeve 28 Escape hole 29 Wire engaging member 33 2nd wire hooking member 35 Wire Engaging Tool 37 Wire Engaging Pin 38 Loop

Claims (6)

  A shutter curtain configured by flexibly connecting a required number of panels, a winding drum provided at both ends of the shaft and urged in a winding direction by a balance spring, and a lower end wound around the winding drum The overhead door has a wire engaged with the lowermost panel of the shutter curtain, and the engagement position of the lower end of the wire can be changed in the vertical direction.   The overhead door according to claim 1, wherein a wire hooking member is provided at a lower end of the width end face of the panel, and the wire is engaged with the width end face above the wire hooking member after the wire hooking member is looped.   A latching member is fixed to the lower end of the wire, and a plurality of wire locking holes are formed at a predetermined pitch in the vertical direction on the width end surface of the panel. The wire locking holes are formed in a circular hole and the circular hole. It consists of a slit hole that extends continuously downward, and the retaining member can be inserted into and removed from the circular hole. The wire can be inserted into the slit hole and the retaining member is locked. The overhead door of claim 2.   A hooking member is fixed to the lower end of the wire, and a wire engaging tool that is bent in an L shape from the back surface to the width end surface of the panel is detachably attached to the width end portion of the panel. The attachment position of the anchoring tool can be changed in the vertical direction, and a wire locking hole is formed in the side surface of the wire anchoring tool. The wire locking hole is continuous with the circular hole and the circular hole, and is provided below. The overhead door according to claim 2, comprising an extending slit hole, wherein the retaining member can be inserted into and removed from the circular hole, and the wire can be inserted into the slit hole and the retaining member is locked.   A second wire hooking member is fixed above the wire hooking member, and at least one wire locking hole is formed between the wire hooking member and the second wire hooking member, and the lower end of the wire is the wire After being hooked on the hanging member, it can be locked in the wire locking hole, and after being hooked on the wire hanging member and the second wire hanging member, it can be locked in the wire locking hole. The overhead door of claim 2 configured as described above.   A lower end of the wire is formed in a loop, and a wire engaging tool that is bent in an L shape from the back surface to the width end surface of the panel is detachably attached to the width end portion of the panel. The overhead door according to claim 2, wherein the mounting position can be changed in the vertical direction, a wire engaging pin projects from a side surface of the wire engaging tool, and the loop is detachable from the wire engaging pin.

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