JP4729342B2 - Manual shutter device - Google Patents

Description

  The present invention relates to a manual shutter device that manually opens and closes a shutter curtain.

  The manual shutter device is provided with a shutter curtain that can be moved up and down along a pair of guide rails erected on the left and right of an opening of a building or the like. The shutter curtain is wound around a take-up drum. The opening is opened by pulling up, and the shutter curtain is pulled out from the winding drum to close the opening.

  The winding drum is provided with an urging member such as a coil spring. When the shutter curtain is pulled out, the urging force is stored along with the rotation of the winding drum, and when the shutter curtain is opened, an operating force is generated by the urging force. The shutter curtain is wound around the winding drum only by this urging force.

  In such a manual shutter device, during the opening operation, an operating force is added to the urging force of the urging member, the moving speed of the shutter curtain is increased, and the stopper portion at the lower end of the shutter curtain is vigorously provided on the lower surface of the shutter box. May collide. Such a collision generates a large collision sound and gives a large impact force to the shutter curtain or the like. In particular, in recent years, the opening of a building has become larger, and as a result, the size of the shutter device has increased, and the impact force at the time of the above-mentioned collision has increased, and it is desired to prevent this.

  Therefore, it has been proposed to provide an air damper as an impact buffering device (see, for example, Patent Document 1). In this case, air dampers are provided on both the left and right sides of the shutter box with the operation rod facing downward so as to contact the stopper portion of the shutter curtain slightly before the fully opened state. In this air damper, an airtight chamber is formed in the cylindrical body by a seal body (seal) provided at the tip of the rod body (rod), and an exhaust port is formed between the rod body and the seal body, The moving speed of the shutter curtain is reduced by discharging the air from the exhaust port while compressing the air in the hermetic chamber.

JP 2004-316329 A

  However, since an air damper that uses air, which is a compressive fluid, is used as the shock absorbing device, a long stroke is required, so that there is a problem that the device becomes large and the installation position is limited. There is also a problem that the buffering action is not constant over the entire stroke. Furthermore, since the exhaust port through which air flows is easily clogged with dust or the like, there is a problem that maintenance is troublesome.

  The present invention has been made in view of such circumstances, and provides a manual shutter device having an impact buffering device that has a stable impact buffering action with a small and lightweight configuration and requires almost no maintenance. For the purpose.

In order to achieve the above object, the manual shutter device according to claim 1 is a pair of guide rails erected on the left and right sides of an opening of a structure, and a shutter curtain that can be moved up and down along the guide rails. A winding drum provided on an upper part of the opening to wind up the shutter curtain, an oil damper provided on the shutter curtain, and a contact part provided on an upper part of the opening, An oil damper is a manual shutter device that abuts against the abutting portion before the shutter curtain is fully opened when the shutter curtain is opened , and the oil damper is provided in a storage case that is locked to the opening of the shutter curtain. The storage case is slidably provided in the storage case, covers the rod of the oil damper and interlocks with the rod. Movable box-shaped cap is characterized in that it is fitted.

  According to the manual shutter device of the first aspect, since the oil damper using the oil that is an incompressible fluid is used as the shock absorbing device, the stroke can be shortened, so the device is downsized. It can also be installed, and it can also be installed on the shutter curtain side. In addition, a constant buffering action can be obtained over the entire stroke of the oil damper. Furthermore, there is no need for maintenance because there is no risk of blockage or the like.

Further, since the caps abuts the abutments load is distributed, it is possible to reduce the surface pressure at the time of contact. In addition, since the oil damper is covered with the housing case and the cap, it looks good and has excellent design.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a manual shutter device according to an embodiment of the present invention.
The shutter device 10 includes a pair of guide rails 11 and 11 erected on the left and right sides of the opening 1 of the building, a shutter curtain 12 that can be moved up and down along the guide rails 11 and 11, and an opening. 1 and a take-up drum 13 around which the shutter curtain 12 is wound. The winding drum 13 is provided in the shutter box 14. Then, when the shutter curtain 12 is wound around the winding drum 13, the shutter curtain 12 rises along the guide rails 11, 11 to open the opening 1, while the shutter curtain 12 is moved from the winding drum 13. The opening 1 is drawn out and closed.

The shutter curtain 12 is configured by connecting a plurality of elongated slats 12a in the vertical direction. The upper end of the shutter curtain 12 is fixed to the winding drum 13. In addition, a baseboard 12 b is provided at the lower end of the shutter curtain 12.
The winding drum 13 includes an urging member (not shown). When the shutter curtain is pulled out, the urging force is stored with the rotation of the winding drum 13, and the urging force is operated when the shutter curtain is opened. The shutter curtain 12 is wound around the winding drum 13 by reducing the force or by only this urging force. This urging member is constituted by, for example, a coil spring stretched between the winding drum 13 and the shutter box 14.

Shock absorbers 20 and 20 are provided at the left and right ends on the indoor side of the baseboard 12b of the shutter curtain 12, respectively. These shock absorbing devices 20 and 20 are arranged symmetrically.
As shown in FIG. 2, the shock absorber 20 includes an oil damper 21, a housing case 22 that houses the oil damper 21, and a cap 23 that is provided in the housing case 22 so as to be slidable in the vertical direction. I have. The housing case 22 and the cap 23 are formed of a synthetic resin such as nylon.

  The storage case 22 is a substantially rectangular case that includes a lower wall 22a, left and right side walls 22b, 22b, and a front wall 22c, with the upper side and the back side being open. The height of the front wall 22c is set lower than the height of the side wall 22b. A hook member 24 is attached to the back surface of the housing case 22. That is, fitting grooves 22e and 22e extending in the horizontal direction are formed on the rear end portions of both side walls of the housing case 22, respectively. The fitting grooves 22e and 22e are respectively formed on the hook members 24. The formed upper and lower ridges 24a, 24a extending in the lateral direction are inserted and fitted from the lateral direction. The hook member 24 is formed of a synthetic resin such as nylon.

  On the back surface of the hook member 24, there are formed a locking piece 24b that can be inserted from one side in the horizontal direction and a hook 24c that is bent downward. The storage case 22 is attached to the baseboard 12b by engaging these locking pieces 24b and hooks 24c with an opening (not shown) formed in the baseboard 12b of the shutter curtain 12.

  A pair of sandwiching walls 22g, 22g extending in the vertical direction is formed inside the housing case 22. An oil damper 21 is inserted between the sandwiching walls 22g and 22g from above, and the upper end of the cylinder 21a of the oil damper 21 is formed on the presser portion 22h formed at the upper end of the sandwiching wall 22g and slightly protruding inward. Is pressed. In addition, when inserting the oil damper 21 between the clamping walls 22g and 22g, it inserts, pressing both the holding parts 22h and 22h. The oil damper 21 is mounted on the storage case 22 with the rod 21b facing upward, and the rod 21b protrudes upward from the upper end of the storage case 22.

  The oil damper 21 is provided with a piston (not shown) having an orifice (not shown) in a cylinder 21a in which oil is sealed, and a rod 21b connected to the piston projects outside the cylinder 21a. belongs to. In the oil damper 21, the rod 21b normally protrudes outside the cylinder 22a. When the rod 22b is pressed, it is pushed into the cylinder 22a while applying a predetermined resistance force. It protrudes to the outside.

  The cap 23 is formed in a substantially square box shape with most of the lower side and the rear side opened, and is slightly provided on the upper wall 23a, the left and right side walls 23b and 23b, the front wall 23c, and the end. The rear wall 23d is provided. The cap 23 is attached to the upper part of the housing case 22 and covers the upper part of the oil damper 21. That is, one side wall 23b and a slight rear wall 23c of the cap 23 are inserted from the upper side between the one side wall 22b of the housing case 22 and the one holding wall 22g. Further, the other side wall 23b and the slight rear wall 23c of the cap 23 are located on the upper side between the other side wall 22b of the housing case 22 and the locking wall 22k formed so as to extend vertically inside the side wall 22b. Has been inserted from. Accordingly, the cap 23 is movable in the vertical direction of the housing case 22 and is prevented from moving in other directions.

  The tip of the rod 21b of the oil damper 21 is in contact with the upper wall 23a of the cap 23. As the cap 23 descends, the rod 21b is pushed into the cylinder 21a and the other rod 21b extends. Along with this, the cap 23 rises. The cap 23 is prevented from further downward movement by the upper wall 23a of the cap 23 coming into contact with the upper ends of the sandwiching wall 22g and the locking wall 22k. At this time, the oil damper 21 The rod 21b is almost pushed into the cylinder 21a. Further, the cap 23 protrudes rearward from the lower end portion of the front wall 23c of the cap 23 to the engaging portion 22n formed to be bent at the upper end portion of the front wall 22c of the housing case 22. By being engaged with the formed engaging portion 23n, further rising is prevented, and at this time, the rod 21b of the oil damper 21 is in a state of being extended to the maximum.

  In the manual shutter device 10 configured as described above, when the shutter curtain 12 is opened, that is, when the fully closed state shown in FIG. 6B is changed to the fully opened state shown in FIG. The upper surface of the cap 23 of the shock absorbing device 20 comes into contact with the contact portion 14 a provided in the shutter box 14 and the cap 23 descends with respect to the housing case 22. As the cap 23 is lowered, the rod 21b of the oil damper 21 is pushed into the cylinder 21a. At this time, the impact is absorbed by the action of the oil damper 21, and the impact sound and impact force are alleviated.

  In the manual shutter device 10, since the oil damper 21 using oil that is an incompressible fluid is used, the stroke of the rod 21 can be shortened, so that the shock absorbing device 20 can be downsized. Moreover, the place which can be installed also spreads and it can also install in the shutter curtain 12 side. In addition, a constant buffering action can be obtained over the entire stroke of the rod 21. Furthermore, there is no need for maintenance because there is no risk of blockage or the like. In addition, since the upper wall 23a of the cap 23 comes into contact with the contact portion 14a of the shutter box 14, there is an advantage that the load is dispersed and the surface pressure at the time of contact can be reduced. Further, since the oil damper 21 is covered with the housing case 22 and the cap 23, the shock absorbing device 20 is excellent in design. Furthermore, the shock absorbing device 20 can be easily attached to the shutter curtain 20 by the hook member 24, and can be removed.

The present invention is not limited to the above-described embodiment, and various modifications can be made.
For example, you may make it delete the cap 23 in the above-mentioned embodiment. Furthermore, the oil damper 21 may be attached to the shutter curtain 20 without using the storage case 22 or the hook member 24.

Further, the contact portion with which the shock absorbing device 20 contacts may be provided on a member other than the shutter box 14. Further, a shock absorbing material such as a rubber material may be provided at the contact portion, and in this way, the impact at the time of the contact can be reduced.
Further, the number of shock absorbing devices 20 may be one, or three or more.

It is a perspective view which shows the manual shutter apparatus which concerns on embodiment of this invention. It is a figure which shows an impact buffer, Comprising: (a) is a top view, (b) is a rear view, (c) is a side view. It is a figure which shows an impact buffering device when the rod of an oil damper extends | expanded, Comprising: (a) is a front view, (b) is a side view. It is a figure which shows the impact buffering device when the rod of an oil damper is pushed in, Comprising: (a) is a front view, (b) is a side view. It is a fragmentary perspective view which shows the mounting state to the baseboard of the shutter curtain of an impact buffering device. It is a figure which shows a manual shutter apparatus, Comprising: (a) is a front view at the time of a full open, (b) is a front view at the time of a fully closed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Opening part 10 Manual shutter apparatus 11 Guide rail 12 Shutter curtain 13 Winding drum 14a Contact part 21 Oil damper 21b Rod 22 Storage case 23 Cap

Claims (1)

A pair of guide rails erected on the left and right of the opening of the building, a shutter curtain that can be moved up and down along the guide rail, and a winding drum that is provided above the opening and winds up the shutter curtain And an oil damper provided on the shutter curtain and an abutting part provided on the upper part of the opening, and the oil damper abuts on the abutting part just before the shutter curtain is fully opened. In the manual shutter device, the oil damper is provided in a storage case that is locked to the opening of the shutter curtain, and the storage case is slidably provided in the storage case. manual for covering the rod of the oil damper and the rod can move conjunction with a box-like cap, characterized in that it is attached Yatta apparatus.

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