JP4602708B2 - Shutter device - Google Patents

Description

  The present invention relates to a shutter device including a shutter curtain in which a plurality of panels are connected in a freely bendable manner.

  There is a shutter device as an opening / closing means for opening / closing an entrance / exit of a building structure such as a building, an opening such as a window, a container of a vehicle, an opening of a cargo bed, or the like. Examples of the shutter device include an overhead door in which a shutter curtain is stored along a ceiling surface, a panel shutter device, and the like, and such a shutter device is configured by a plurality of panels being connected to bendable. It has a curtain.

  An upper connecting portion and a lower connecting portion are formed at the upper end portion and the lower end portion of the panel, respectively, and the upper connecting portion and the lower connecting portion are rotatably fitted so that the upper and lower panels are connected so as to be bent. ing.

  Generally, the material of the panel is metal, and the connection between the upper connection portion and the lower connection portion is a metal contact. For this reason, noise may be generated at the connecting portion between the panels due to vibrations when the panel shutter device is opened and closed. Depending on the environment in which the panel shutter device is installed, such as in a quiet residential area, it is required to suppress the noise when the panel shutter device is opened and closed as much as possible.

  Further, in a shutter device that is frequently opened and closed, wear occurs at the connecting portion, and it is desired to reduce wear.

  Conventionally, for example, Patent Document 1 discloses a technique for suppressing noise generated at a connecting portion of a panel or a means for reducing wear at a connecting portion. The shutter curtain 41 shown in Patent Document 1 will be outlined with reference to FIG.

  An upper connection portion 43 formed in a hook shape is formed at the upper end portion of the panel 42, and a hook-like lower connection portion 44 formed substantially symmetrically with the upper connection portion 43 at the lower end portion of the panel 42. Is formed. The lower connecting portion 44 is covered with a cushioning material 45 along the outer surface of the lower connecting portion 44.

  The upper and lower panels 42 and 42 are connected by the upper connecting portion 43 and the lower connecting portion 44 being fitted via the cushioning material 45, and vibrate between the upper connecting portion 43 and the lower connecting portion 44. When this occurs, the buffer material 45 absorbs the noise and suppresses the generation of noise. When the upper and lower panels 42 and 42 are bent frequently, the cushioning material 45 functions as a lubricant to reduce wear.

  In the connection structure between the panels 42, 42, the upper end portion of the cushioning material 45 has a shape hung around the upper end of the lower coupling portion 44, but the lower end of the cushioning material 45 is in a free state. Yes, the structure is not restricted in the radial direction. For this reason, when the lower panel 42 is rotated in the clockwise direction in the drawing, for example, the lower end portion of the cushioning material 45 may be turned over, or the cushioning material 45 may be shifted in the rotational direction. Further, the buffer material 45 is not in close contact with either the upper connecting portion 43 or the lower connecting portion 44, and the load acting on the panel 42 is substantially concentrated on the upper end of the upper connecting portion 43, so There is a possibility that the load on the upper end portion of the material 45 is locally increased and wear of the cushioning material 45 is increased.

Japanese Utility Model Publication No. 3-98296

  In view of such a situation, the present invention connects the panels with a synthetic resin interposed therebetween, reduces noise, reduces wear of the connecting portion, prevents the synthetic resin from turning over, and shifts in position, thereby improving durability. Is.

  According to the present invention, in a shutter device including a shutter curtain in which a plurality of panels are flexibly connected, a male connecting portion having a cylindrical outer surface is formed at one end portion of the panel, and a cylindrical inner surface is formed at the other end portion. A female-type connecting portion is formed, and a synthetic resin bush is mounted on the cylindrical surface of at least one of the connecting portions, and the male-type connecting portion and the female-type connecting portion are rotatably fitted via the bush. In addition, a locking groove is formed in the connecting portion cylindrical surface, and the bush is related to a shutter device in which a protrusion that fits in the locking groove is formed, and the connecting portion to which the bush is mounted is provided. Is related to a shutter device in which a bank part covering the end of the bush is formed, the bush is related to a shutter device attached to the female connecting part, and the bush is attached to the male connecting part. Shutter equipment It relates to.

  According to the present invention, in a shutter device including a shutter curtain in which a plurality of panels are flexibly connected, a male connecting portion having a cylindrical outer surface is formed at one end portion of the panel, and a cylindrical inner surface is formed at the other end portion. A synthetic resin bush is mounted on the cylindrical surface of at least one of the connection portions, and the male connection portion and the female connection portion are rotatable via the bush. The connecting portion cylindrical surface is formed with a locking groove, and the bush is formed with a protrusion that fits into the locking groove. Suppressed, metal contact at the panel connecting portion is avoided, noise generation is prevented, and wear resistance is improved.

  According to the present invention, since the bank portion for covering the end portion of the bush is formed in the connecting portion to which the bush is mounted, the rotational force acts directly on the tip portion of the bush when the panel is bent. Is prevented, the tip portion is prevented from being turned over, and the durability of the bush is improved.

  According to the present invention, since the bush is attached to the female connecting portion, the bush is prevented from being exposed, and the possibility of damage is reduced.

  Further, according to the present invention, since the bush is mounted on the male connecting portion, an excellent effect such as improvement of the mounting property of the bush is exhibited.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  First, an outline of an overhead door which is one of shutter devices in which the present invention is implemented will be described with reference to FIG.

  A vertical guide rail 1 is provided along both side pillars of an opening of a building or the like, a horizontal guide rail 2 is provided along the ceiling, and the vertical guide rail 1 and the horizontal guide rail 2 are connected by a curved rail 3. Has been. An opening / closing device 5 having a horizontal winding shaft 4 is provided above the vertical guide rail 1.

  A shutter curtain 6 is slidable along the vertical guide rail 1, the curved rail 3, and the horizontal guide rail 2, and the shutter curtain 6 is configured by a required number of panels 7 being flexibly connected. Yes.

  The winding shaft 4 is rotatably provided on a wall surface via a bracket 22, drums 8 are provided at both ends of the winding shaft 4, and a wire 9 wound around the drum 8 is connected to the shutter curtain 6. Is attached to the lower end of the. The take-up shaft 4 is provided with a balance spring 11, which urges the shutter curtain 6 in the upward direction via the wire 9 to reduce power when the shutter curtain 6 is opened and closed. is doing.

  A trolley rail 13 is disposed in parallel with the horizontal guide rail 2, and the trolley rail 13 is fixed to a ceiling of a building or the like (not shown) and fixed to a wall surface 14 above the opening via a bracket 15. A trolley 16 is movably provided on the trolley rail 13, and a trolley driving device 17 is provided at one end of the trolley rail 13. The bracket 15 is provided with a pulley 18, and a bending member (not shown) such as a rope or a belt extending from the trolley driving device 17 is hung around the pulley 18, and the bending member is attached to the trolley. The trolley drive device 17 is rotated around the bending member so that the trolley 16 travels along the trolley rail 13.

  One end of a connecting stay 19 is pivotally attached to the trolley 16, and the other end of the connecting stay 19 is pivotally attached to the uppermost panel 7 of the shutter curtain 6 via a bracket 21.

  When the opening is opened, the trolley 16 travels to the left in FIG. 1 and the shutter curtain 6 is pulled up via the connecting stay 19. The shutter curtain 6 includes the vertical guide rail 1 and the curved rail. 3. Guided by the horizontal guide rail 2 and lifts to open the opening.

  When the opening is closed, the trolley 16 travels to the right in FIG. 1 to lower the shutter curtain 6 and close the opening.

  Thus, when the trolley driving device 17 causes the trolley 16 to travel, the shutter curtain 6 is opened and closed.

  The shutter curtain 6 and the panel 7 according to the present embodiment will be described with reference to FIGS.

  The panel 7 is integrally formed by extrusion molding or pultrusion molding. The cross section has a hollow flat plate shape, rib portions 24 are formed at required locations (two locations in the figure), and a front surface portion 25 and a back surface portion. 26 is connected.

  A male connecting portion 27 is formed at the lower end portion of the panel 7 and a female connecting portion 28 is formed at the upper end portion over the entire length of the panel. The male connecting portion 27 has a hook shape having a cylindrical portion in which the right portion in FIG. 3 is cut off, and an arc groove 29 concentric with the male connecting portion 27 is formed on the outer surface side of the male connecting portion 27. Is formed. The lower end portion of the surface portion 25 is an extended end portion 30 that extends further downward than the male connecting portion 27.

  The female connecting portion 28 has a cylindrical recess 31 in which the male connecting portion 27 can be fitted. The recess 31 is open at the upper right portion in FIG. 4 and faces upward from the upper end of the panel 7. It has a cylindrical tongue 32 that extends and forms part of the recess 31. A concave step portion 33 is formed at the upper end portion of the surface portion 25, and the extended end portion 30 overlaps the concave step portion 33.

  A groove 34 is formed over the entire length of the panel at the boundary between the upper end of the recessed step portion 33 and the base end of the cylindrical tongue piece 32, and a seal member 40 extends over the entire length of the groove 34 in the groove 34. When the upper and lower panels 7 and 7 are in a straight line state, the seal member 40 is in close contact with the back surface base portion of the extended end portion 30 so as to seal the connecting portion of the upper and lower panels 7 in a watertight manner. It has become.

  A concave cylindrical portion 35 concentric with the concave portion 31 is formed on the inner surface of the concave portion 31, and one or more locking grooves 36 parallel to the center line of the concave cylindrical portion 35 are formed on the wall surface of the concave cylindrical portion 35. Strips (two strips in the figure) are formed. The locking groove 36 may be formed continuously over the entire length of the recess 31 or may be provided in a hole shape at a predetermined interval.

  A bush 37 having a shape substantially similar to the concave portion 31 is fitted into the concave cylindrical portion 35. As the material of the bush 37, a material having a buffer property and a lubricating property such as polyacetal and high molecular polyethylene is preferable.

  On the outer surface of the bush 37, the same number of ridges 38 as the locking grooves 36 are formed. The bush 37 is fitted in the recess 31 and the ridges 38 are fitted in the locking grooves 36. .

  When the bush 37 is fitted in the recess 31, the inner surface forms a cylindrical surface concentric with the outer surface of the male connecting portion 27, and both end portions of the bush 37 are the end portions of the recess 31. It is in the state covered with the bank part 31a left behind.

  The bush 37 may be inserted by being slid into the recess 31 from the center line direction, or the bush 37 may be inserted by being radially reduced from the opening of the recess 31. Further, the bush 37 may be provided over the entire length of the concave portion 31, or a bush 37 having a required length may be fitted at a predetermined interval.

  The connection between the panels 7 and 7 is such that the upper panel 7 and the lower panel 7 are inclined, the male connection part 27 is fitted from the notch part of the female connection part 28, and the upper panel 7 and This is done by extending the lower panel 7 substantially linearly. In the extended state, the cylindrical portion of the male connecting portion 27 and the cylindrical portion of the female connecting portion 28 are fitted via the bush 37, and the cylindrical tongue piece 32 is fitted into the arc groove 29. Therefore, the panels 7 will not come off. Further, within the range where the cylindrical portion of the male connecting portion 27 and the cylindrical portion of the female connecting portion 28 are fitted, the panels 7 and 7 can be bent and extended without being detached.

  In a state where the upper and lower panels 7 and 7 are connected, a detent 39 is fixed to both width sides of the lower end portion of the panel 7. The detent 39 closes the width end of the arc groove 29 and restricts the cylindrical tongue piece 32 and the bush 37 from protruding in the width direction from the arc groove 29.

  When the male connecting portion 27 is fitted to the female connecting portion 28, the bush 37 is interposed between the male connecting portion 27 and the female connecting portion 28, so that the shutter curtain Even when the upper and lower panels 7 and 7 vibrate as in the case of opening and closing 6, the generation of noise between the male connecting portion 27 and the female connecting portion 28 is suppressed.

  Further, since the inner surface of the bush 37 is a cylindrical surface concentric with the outer surface of the male connecting portion 27, the male connecting portion 27 contacts the bush 37 evenly on the cylindrical surface, and the bush 37 is locally contacted with the bush 37. Load is not generated. Therefore, the surface pressure acting on the bush 37 is kept low and the wear resistance is increased.

  When the panels 7 and 7 are bent, a rotational force acts on the bush 37 due to a frictional force, but the bush 37 rotates because the protrusion 38 is fitted in the locking groove 36. There is no. Further, since the end portion of the bush 37 is covered with the bank portion 31a, the rotational force does not act directly on the end portion of the bush 37 by the rotation of the male connecting portion 27. Phenomena such as edge turning up does not occur.

  Thus, metal contact at the connecting portion of the panels 7 and 7 can be eliminated, noise generation can be suppressed, the connecting portion can be smoothly rotated, and wear can be reduced.

  FIG. 6 shows a second embodiment. In the second embodiment, a case is considered in which the bush 37 is fitted from the open portion of the recess 31 by reducing the bush 37 in the radial direction. Is.

  The direction of the locking groove 36 is the same as the fitting direction of the bush 37, and the protrusion 38 is fitted into the locking groove 36 at the same time that the bush 37 is fitted into the recess 31. Thus, the positioning of the locking groove 36 and the protrusion 38 is facilitated.

  FIG. 7 shows a third embodiment. In the third embodiment, a bush 37 is fitted on the outer surface of the male connecting portion 27. When the bush 37 is mounted on the male connecting portion 27, it is easy to fit the bush 37 in a radial direction, and the mounting operation of the bush 37 is facilitated.

  Even when the bush 37 is attached to the male connecting portion 27, the metal contact at the connecting portion of the panels 7 and 7 is similarly eliminated, noise generation is suppressed, and the connecting portion is smoothly rotated. In addition, wear can be reduced. The direction of the locking groove 36 may be the same as the fitting direction of the bush 37 so that the fitting operation between the bush 37 and the male connecting portion 27 can be easily performed.

  In consideration of the lubricity of the connecting portion, the short bushing 37 is provided in the concave portion 31 or the male connecting portion 27 at least at both ends at predetermined intervals according to the situation. Since the bush 37 and the bush 37 are spaced apart from each other, a gap is formed between the male connecting portion 27 and the recessed portion 31. By connecting the grease with the gap as a grease reservoir, the connecting portion The lubricity is further improved.

  Moreover, you may implement 3rd Embodiment with respect to the male type | mold connection part 27 of the panel 7 of 1st Embodiment mentioned above and 2nd Embodiment.

  Further, although the above embodiment has been described with respect to an overhead door, it can be applied to a shutter device in which a panel is flexibly connected via a connecting portion, and can also be applied to a horizontal panel shutter. Nor.

It is a perspective view which shows the outline of the overhead door by which this invention is implemented. It is a partial side view which shows the shutter curtain which concerns on embodiment of this invention. It is an enlarged view of the connection part of the panel which concerns on embodiment of this invention. It is an enlarged view of the connection part of the panel which concerns on embodiment of this invention. It is an enlarged view which shows the connection state of the panel which concerns on embodiment of this invention. It is a connection part enlarged view of the panel which shows the 2nd Embodiment of this invention. It is a connection part enlarged view of the panel which shows the 3rd Embodiment of this invention. It is a side view which shows the conventional shutter curtain connection part.

Explanation of symbols

6 Shutter curtain 7 Panel 27 Male connecting portion 28 Female connecting portion 31 Recessed portion 31a Bank portion 32 Cylindrical tongue 33 Recessed stepped portion 34 Groove 35 Recessed cylindrical portion 36 Locking groove 37 Bushing 38 Projection 39 Shifting prevention

Claims (6)

In a shutter device having a shutter curtain in which a plurality of panels are flexibly connected, a male connecting portion having a cylindrical outer surface partially cut away at one end portion of the panel is formed, and an upper portion is formed at the other end portion. A female connecting portion having an open cylindrical inner surface is formed, and a synthetic resin bush is attached to the cylindrical surface of at least one of the connecting portions, and the end of the bush is attached to the connecting portion to which the bush is attached. A bank portion is formed, the male connecting portion and the female connecting portion are rotatably fitted via the bush, and a locking groove is formed on the cylindrical surface of the connecting portion. The shutter device is characterized in that a protrusion that fits into the locking groove is formed.   The shutter device according to claim 1, wherein the bush is attached to the female connecting portion.   The shutter device according to claim 1, wherein the bush is attached to the male connecting portion.   The male connecting portion is formed with a hook portion having a cylindrical portion with a part cut away, and an arc groove concentric with the male connecting portion is formed on the outer surface of the male connecting portion. The outer surface of the panel is formed with an extending end extending further downward than the male connecting portion. The upper portion of the female connecting portion is opened and the male connecting portion can be fitted therein. A cylindrical recess is formed, the recess extends upward from the upper end of the panel, and the cylindrical shape fits into the arc groove by extending the upper panel and the lower panel substantially linearly. The shutter device according to claim 1, further comprising a tongue piece, and a concave step portion that can overlap with the extending end portion is formed on the panel surface portion outside the cylindrical tongue piece.   The shutter device according to claim 4, wherein a groove is formed at a boundary portion between an upper end of the concave stepped portion and a base end of the cylindrical tongue piece, and a seal member is provided in the groove.   The shutter device according to claim 1, wherein a stopper is fixed to both width sides of the lower end portion of the panel.

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