Shutter unit

Abstract

To provide a shutter unit which suppresses impact when a shutter curtain stops while not reducing operability of the shutter curtain.SOLUTION: A shutter unit in which a shutter curtain mounted on the outdoor side of a building and wound around a winding shaft is housed in a shutter box, the shutter curtain having a seat plate provided at a lower end and a stopper provided on the seat plate for restricting a rise of the seat plate of the shutter curtain to be wound up, the stopper having a contact surface portion that makes contact with a non-moving portion immovably provided below the shutter box, and a cushioning material made of synthetic resin that is provided side by side with the contact surface portion in a viewing direction and has an upper surface position lower than that of the contact surface portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a shutter unit. [Background technology]

[0002] Conventionally, there has been known a shutter unit in which a stopper that engages with the shutter curtain intake port is provided on the bottom slat to prevent the bottom slat (seat plate) from being pulled into the shutter case when the shutter curtain is fully opened (see, for example, Patent Document 1). In such a shutter unit, a buffer means made of synthetic resin such as rubber is provided on the stopper to absorb the impact when the stopper collides with the shutter curtain intake port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-300746 Summary of the Invention [Problem to be solved by the invention]

[0004] A stopper equipped with a synthetic resin cushioning material had the problem that if the shutter was left open for a long period of time and the cushioning material was in contact with the intake port, the cushioning material would stick to the intake port, making it difficult to pull down the shutter curtain and reducing operability.

[0005] The present invention has been made in consideration of such problems, and its purpose is to provide a shutter unit that reduces the impact when the shutter curtain stops, while not reducing the operability of the shutter curtain. [Means for solving the problem]

[0006] In order to achieve this purpose, the shutter unit of the present invention is a shutter unit in which a shutter curtain attached to the outside of a building and wound around a winding shaft is housed in a shutter box, the shutter curtain having a seat plate at the lower end and a stopper attached to the seat plate that regulates the rise of the seat plate of the shutter curtain as it is rolled up, the stopper having a contact surface portion that abuts against a non-movable portion that is immovably attached below the shutter box, and a cushioning material made of synthetic resin that is arranged alongside the contact surface portion in the forward direction and whose upper surface is positioned lower than the contact surface portion. Other features of the present invention will become apparent from the description of this specification and the accompanying drawings. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a shutter unit that reduces the impact when the shutter curtain stops, while not reducing the operability of the shutter curtain. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a vertical cross-sectional view of the shutter unit according to the embodiment. [Figure 2] FIG. [Figure 3] FIG. 10 is a vertical cross-sectional view showing the lower end of the shutter curtain rolled up by the motor. [Figure 4] FIG. 10 is a vertical cross-sectional view showing the state in which the upper frame is bent due to the seat plate being raised. [Figure 5] 10 is a vertical cross-sectional view showing a state in which the seat plate is pressed down by the elasticity of the cushioning material and the upper frame. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] A shutter unit according to an embodiment of the present invention will now be described with reference to the drawings.

[0010] As shown in Figure 1, the shutter unit 1 of this embodiment is installed on the outdoor side of a fixture 2 installed in a building 6, for example, and has a shutter box 4 that houses a shutter curtain 3 wound around a winding shaft 10, and a cover member 5 that covers the outdoor side of the shutter box 4.

[0011] In the following explanation, the up and down directions when the shutter unit 1 is attached to a building, etc. are referred to as the up and down directions, the left and right directions are referred to as the left and right directions, and the indoor and outdoor directions are referred to as the projection directions. Even for each part of the shutter unit 1, or even for each component that makes up the shutter unit 1 when it is in a standalone state, the directions will be specified and explained as the up and down directions, left and right directions, and projection directions when the shutter unit 1 is attached.

[0012] The shutter curtain 3 is wound around a winding shaft 10 that is driven and rotated by a motor 8 that forms the drive unit. The shutter curtain 3 passes between the lower end 5a of the cover member 5 and the outdoor end 20a of the upper frame 20, which is a non-moving part that forms the frame of the fitting 2 and protrudes from the indoor side, and rises when wound up by the winding shaft 10, and falls when unwound from the winding shaft 10. Furthermore, in the event of a power outage, the shutter curtain 3 is configured so that the user can raise and lower it without using power.

[0013] The shutter curtain 3 has a plurality of slats 31 connected in a vertical line, a seat plate 32 attached below the lowest slat 31 and forming the lower end of the shutter curtain 3, and a stopper 7 attached to the seat plate 32.

[0014] The slats 31 are positioned above and below each other and adjacent slats 31 are engaged and connected to each other so that they can swing freely. The shutter curtain 3 has the upper end of the uppermost slat 31 connected to the winding shaft 10, and the seat plate 32 attached to the lower end of the lowermost slat 31.

[0015] 1 and 2, the seat panel 32 has a seat panel upper member 32a connected to the lowest slat 31 and a seat panel lower member 32b supported so as to be able to swing freely below the seat panel upper member 32a. Stoppers 7 are provided on the indoor side of the seat panel upper member 32a, at both ends of the seat panel 32 in the left-right direction.

[0016] The stopper 7 has a substantially rectangular parallelepiped stopper body 70 and a buffer material 71 attached to the upper end of the stopper body 70. The upper part of the stopper body 70 has an outdoor upper surface portion 70a that forms a horizontal plane on the outdoor side, and an indoor upper surface portion 70b that has a step on the indoor side of the outdoor upper surface portion 70a that is lower than the outdoor upper surface portion 70a. Both the outdoor upper surface portion 70a and the indoor upper surface portion 70b are located in positions that vertically face the upper frame 20 that protrudes from the indoor side located above.

[0017] A cushioning material 71 is attached to the indoor upper surface portion 70b. That is, the cushioning material 71 is arranged side by side with the outdoor upper surface portion 70a in the forward direction. The cushioning material 71 is made of a rubber-like elastic body made of synthetic resin, such as EPDM (ethylene propylene diene rubber) or CR rubber, or a foamed resin containing air bubbles. The upper surface 71a of the cushioning material 71 is located slightly lower than the outdoor upper surface portion 70a. That is, the cushioning material 71 is formed so that its thickness is thinner than the difference in level between the outdoor upper surface portion 70a and the indoor upper surface portion 70b.

[0018] When the shutter curtain 3 is rolled up by the motor 8, the outdoor upper surface 70a of the stopper 7 comes into contact with the upper frame 20, as shown in Figure 3. At this time, the lifting of the seat plate 32 is restricted, thereby stopping the roll-up of the shutter curtain 3. Here, the outdoor upper surface 70a corresponds to the contact surface.

[0019] When a user pulls up the seat plate 32 to roll up the shutter curtain 3 during a power outage or the like, if the user pulls up the seat plate 32 with a force greater than that applied when rolling up by the motor 8, the seat plate 32 may not stop even when the outdoor upper surface 70a of the stopper 7 abuts against the upper frame 20, and may continue to rise. In this case, as shown in Figure 4, the stopper 7 rises together with the seat plate 32, causing the outdoor end 20a of the upper frame 20 to rise and elastically deform so as to be warped.

[0020] At this time, when the buffer material 71 of the stopper 7 hits the upper frame 20, the impact is absorbed by the buffer material 71, and then the seat plate 32 and the stopper 7 are pushed down by the elasticity of the buffer material 71 and the return of the elastic deformation of the upper frame 20. Then, as shown in Fig. 5, the buffer material 71 stops at a position away from the upper frame 20 and remains stopped.

[0021] According to the shutter unit 1 of this embodiment, when the shutter curtain 3 is rolled up, the outdoor upper surface portion 70a of the stopper 7 first abuts against the upper frame 20, restricting the rise of the seat plate 32 and stopping the roll-up of the shutter curtain 3. At this time, if the user operates the stopper with greater force, and the seat plate 32 continues to rise after the outdoor upper surface portion 70a abuts against the upper frame 20, the upper frame 20 is pushed upward and bent. Then, as the upper frame 20 bends, the buffer material 71, which is located indoors relative to the outdoor upper surface portion 70a and has an upper surface 71a lower than the outdoor upper surface portion 70a, comes into contact with the upper frame 20, and the buffer material 71 is compressed by the upper frame 20.

[0022] At this time, the impact when the stopper 7 comes into contact with the upper frame 20 is alleviated, and the cushioning material 71 pushes the seat plate 32 downward together with the stopper 7, and the seat plate 32 stops with the cushioning material 71 separated from the upper frame 20. Therefore, when the winding up of the shutter curtain 3 is stopped, the cushioning material 71 remains separated from the upper frame 20. Therefore, the cushioning material 71 does not stick to the upper frame 20, making it difficult to pull down the shutter curtain 3. In this way, it is possible to provide a shutter unit 1 that reduces the impact when the shutter curtain 3 stops, without reducing the operability of the shutter curtain 3.

[0023] In addition, the buffer material 71 is pushed back by the elasticity of the upper frame 20 pushed up by the stopper 7, so that the buffer material 71 can be more reliably separated from the upper frame 20 when the shutter curtain 3 stops.

[0024] In the above embodiment, the upper frame 20 of the fixture was used as an example of the non-movable part that the stopper 7 abuts against when the shutter curtain 3 is rolled up, but this is not limited to this and any component that is immovably installed on the indoor side of the shutter curtain, such as a component that is installed at the bottom end of the shutter box and that constitutes the shutter box, will do.

[0025] In the above embodiment, an example was described in which the stopper 7 is provided on the indoor side of the seat plate upper member 32a of the seat plate 32 and abuts against the upper frame 20 as a non-moving part that protrudes from the indoor side when the shutter curtain 3 is rolled up, but this is not limited to this. For example, the stopper 7 may be provided on the outdoor side of the seat plate upper member 32a of the seat plate 32 and abuts against a non-moving part such as the cover member 5 of the shutter box 4 that is provided on the outdoor side when the shutter curtain 3 is rolled up. In this case, the buffer material is arranged side by side on the outdoor side of the outdoor upper surface part.

[0026] Furthermore, the above-described embodiments are provided to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof.

[0027] The present embodiment includes at least the following inventions. Aspect 1: A shutter unit in which a shutter curtain attached to the outside of a building and wound around a winding shaft is housed in a shutter box, the shutter curtain having a seat plate attached to the lower end and a stopper attached to the seat plate that regulates the rise of the seat plate of the shutter curtain as it is rolled up, the stopper having a contact surface portion that contacts a non-movable portion that is immovably attached below the shutter box, and a cushioning material made of synthetic resin that is arranged alongside the contact surface portion in the forward direction and whose upper surface is positioned lower than the contact surface portion.

[0028] According to the shutter unit of aspect 1, when the shutter curtain rises, the contact surface first contacts the non-moving part, restricting the rise of the seat plate and stopping the winding up of the shutter curtain. At this time, if the user operates the shutter curtain with greater force, and the seat plate continues to rise after the contact surface contacts the non-moving part, the non-moving part is pushed upward and curved. Then, as the non-moving part curves, the buffer material, which is arranged alongside the contact surface in the projection direction and has an upper surface lower than the contact surface, comes into contact with the non-moving part, and the buffer material is compressed by the non-moving part.

[0029] At this time, the impact when the stopper comes into contact with the non-moving part is alleviated, and the cushioning material pushes the seat plate downward together with the stopper, and the seat plate stops with the cushioning material separated from the non-moving part. Therefore, when the shutter curtain stops rolling up, the cushioning material remains separated from the non-moving part. Therefore, the cushioning material does not stick to the non-moving part, making it difficult to pull down the shutter curtain. In this way, it is possible to provide a shutter unit that reduces the impact when the shutter curtain stops, without reducing the operability of the shutter curtain.

[0030] Aspect 2: A shutter unit as described in aspect 1, characterized in that the cushioning material abuts against the non-moving portion, which has been pushed up by the stopper and elastically deformed, and the stopper is pushed back by the elasticity of the non-moving portion and moves away from the non-moving portion.

[0031] According to the shutter unit of aspect 2, the cushioning material is pushed back by the elasticity of the non-moving part pushed up by the stopper, so that it is possible to more reliably separate the cushioning material from the non-moving part when the shutter curtain stops. [Explanation of symbols]

[0032] 1 shutter unit, 3 shutter curtain, 4 shutter box, 6 Building, 7 Stopper, 10 Winding shaft, 20 Upper frame (non-moving part), 32 Seat plate, 70a Outdoor upper surface part (contact surface part), 71 Cushioning material, 71a Upper surface of the buffer material,

Claims

1. A shutter unit in which a shutter curtain attached to the exterior of a building and wound around a winding shaft is housed in a shutter box, The shutter curtain includes a seat plate provided at a lower end thereof, a stopper provided on the seat plate to restrict the lifting of the seat plate of the shutter curtain being rolled up; The stopper is A contact surface portion that contacts a non-movable portion that is immovably provided below the shutter box; A cushioning material made of synthetic resin, which is arranged alongside the contact surface portion in a prospective direction and has an upper surface positioned lower than the contact surface portion; A shutter unit comprising:

2. 2. The shutter unit according to claim 1, A shutter unit characterized in that the cushioning material is pushed up by the stopper and abuts against the non-moving portion which has been elastically deformed, and the stopper is pushed back by the elasticity of the non-moving portion and moves away from the non-moving portion.

Images