JP4939249B2 - Water drop fall prevention structure and sheet shutter provided with the same - Google Patents

Description

  The present invention relates to a water drop fall prevention structure and a sheet shutter including the same. Note that the sheet shutter (also referred to as a roll-up door) in the present specification includes not only a sheet shutter that does not have aggregates but also a sheet shutter that includes a plurality of aggregates at regular intervals.

In factories and warehouses, work for loading and unloading luggage is performed using a forklift or the like, and therefore it is necessary to open and close the opening at a high speed, and thus a sheet shutter may be provided.
In the sheet shutter, a forklift or the like may come into contact with the lower part of the sheet shutter, and the sheet may be torn. Replacing the entire sheet is undesirable in terms of cost, etc., so the sheet is composed of the seat body and the lower part of the seat in advance, and the lower end of the seat body and the upper end of the lower part of the seat are removed using a connecting member (joint rod) Linking is possible. For example, Patent Document 1 discloses a shutter curtain that is configured to be split vertically through a joint portion. By providing the joint part, it is not necessary to replace the curtain set, and only the lower half part can be replaced. The seat is replaced by removing the rivet, removing the lower half of the curtain from the upper half of the curtain, and attaching the rivet when the lower curtain for replacement is attached to the upper half of the curtain.

Another technical idea capable of exchanging only the lower part of the shutter curtain is disclosed in Patent Document 2. Coupling means (joint part) that cooperates in a separable manner for the vertically divided sheets is provided in the sheet in advance, and fasteners provided on the opposing edge portions of the divided upper and lower sheets are disclosed as cooperation means. ing.
JP 2003-148065 A JP 2000-5332 A

  However, the conventional sheet shutter does not have a structure for preventing water droplets from dropping when they adhere to the lower surface of the sheet shutter. For this reason, there has been a problem that unsanitary water droplets dripped from the sheet shutter adhere to the luggage at the time of loading and unloading work with a forklift or the like. When a package that is not fully packed is transported, the attachment of unsanitary water droplets directly leads to a quality problem. In particular, in the food industry in recent years, deficiencies in hygiene may develop into a problem of company survival, so it is necessary to work seriously.

  Further, when the floor surface is uneven or when the lower part of the seat is retrofitted, there is a problem that a gap is formed in the opening and insects or the like enter from the gap.

  It is an object of the present invention to provide a water droplet fall prevention structure that can solve the above-described problems and a sheet shutter including the same.

A first aspect of the present invention is a structure for preventing a water droplet from dropping from a sheet shutter, comprising a sheet main body and guide rails that receive and guide both end portions of the sheet main body, a pair of rod-shaped bodies, and each end of the rod-shaped body A connecting tool for movably connecting the inner bag-like portion having a substantially arch-shaped bottom surface for storing them, and an outer bag-like shape having a substantially arch-shaped bottom surface that covers the inner bag-like portion and is positioned at the lower end of the seat body When the seat shutter is in the open state, the rod-like body is bent through the coupling tool by its own weight, so that the lower end portion of the outer bag-like portion has a substantially arch shape, and when the seat shutter is in the closed state, A water drop fall prevention structure characterized in that a pair of rod-like bodies are in a horizontal or nearly horizontal state and an outer bag-like portion is brought into contact with a floor surface.
According to a second aspect, in the first aspect, a synthetic resin side end member is provided at a contact portion of the both ends of the rod-like body fitted in the groove of the guide rail with the guide rail. And
According to a third invention, in the first or second invention, the connector has a role of a stopper that prevents the rod-shaped body from being refracted more than a predetermined angle.
According to a fourth invention, in the first, second, or third invention, the connector has a pull-in structure that draws an end of the rod-shaped body on the connector side into the connector.
According to a fifth invention, in any one of the first to fourth inventions, an angle formed by the pair of rod-like bodies connected by the connector in the open state is approximately 170 to 176 degrees.
According to a sixth invention, in any one of the first to fifth inventions, the outer bag-like portion is formed of a flexible sheet.
A seventh invention is characterized in that, in any one of the first to sixth inventions, the outer bag-like portion is configured to be detachably attached to the seat body by a fixture.
An eighth invention is a sheet shutter provided with the water drop fall prevention structure according to any one of the first to seventh inventions.

According to the present invention, it is possible to prevent water droplets on the sheet shutter from falling on the luggage.
Further, since the gap between the sheet shutter and the guide rail can be eliminated, it is possible to prevent insects and the like from entering.

  FIG. 1 is a side sectional view of a conventional sheet shutter. The conventional sheet shutter is configured to include a lower bar 2 at the lowermost end of the sheet body 1. By having the lower bar 2, the seat body 1 is prevented from being damaged during contact with a forklift or the like. The seat body 1 and the lower bar 2 are attached by a fitting tool such as a rivet with a pair of clamping plate members facing each other. The lower bar 2 is horizontally configured so that the lower surface and the floor surface abut in the closed state.

However, in the conventional sheet shutter having such a configuration, since the lower bar 2 is horizontal, it has not been possible to prevent water droplets from falling.
Further, since there is a gap between the side end of the lower bar 2 and the guide rail 8, the opening cannot be completely sealed by the sheet shutter, and insects or the like may enter from the gap (see FIG. 10). ). In addition, since the lower bar 2 is composed of a member having a relatively high hardness, a gap may be formed between the lower bar 2 and the floor surface when the floor surface is uneven.

  The water droplet fall prevention structure of the best mode of the present invention includes a pair of rod-shaped bodies, a connector 9 that movably couples each end of the pair of rod-shaped bodies, and an inner bag-shaped portion having a substantially arch-shaped bottom surface for housing them. 4 and the inner bag-like portion 4, and the bottom surface located at the lower end portion of the sheet main body is constituted by a substantially arch-shaped outer bag-like portion 5, which is attached to the lower end portion of the sheet main body 1, It became possible to solve the problem. The rod-shaped body can be configured at a low cost by using a metal pipe, but is not limited to this, and may be one in which an even number of rod-shaped members are connected or one having a gentle slope. Here, it is important that the bottom surface of the outer bag-like portion 5 has a substantially arch shape by the pair of rod-like bodies forming a substantially arch shape. This is because when the bottom surface of the outer bag-shaped portion 5 has a substantially arch shape, water droplets attached to the bottom surface of the outer bag-shaped portion 5 act to flow down to the guide rail through the arch. The rod-like body should have a certain level of strength because it also serves as an aggregate, and it should also have a certain weight because it also serves as a weight.

The length of the rod-like body changes by several centimeters to several tens of centimeters in accordance with bending / stretching operation accompanying vertical movement. Therefore, it is necessary to shorten it so that it does not abut against the guide rail 8 at the time of expansion. However, since it also serves as an aggregate, it needs to be designed to an appropriate length within a range where it does not abut against the guide rail 8.
In addition, you may comprise a stopper so that it may have the drawing structure comprised with the crank mechanism etc. That is, by providing a pull-in structure, when contacting the bottom surface, the end of the connecting side of the bar-shaped body is pulled into the stopper, and the bar-shaped body can be leveled.
The bending of the rod-shaped body is preferably configured such that each rod-shaped body and the horizontal plane are 2 to 5 degrees. If the angle is not 2 degrees or more, the water droplet does not flow smoothly. On the other hand, if the bending of the rod-shaped body exceeds 5 degrees, there arises a problem that the opening and closing of the sheet shutter becomes an obstacle. Accordingly, a preferable angle formed by the pair of rods connected by the connector 9 is approximately 170 to 176 degrees.

The outer bag-like portion 5 is preferably composed of a flexible sheet. This is because, by using a flexible sheet, even if the floor surface is uneven, the entire surface can be brought into contact with the floor surface.
Moreover, it is preferable to provide the side end member 7 in the contact part of the outer bag-shaped part 5 with the guide rail 8. By providing the side end member 7, sliding with the guide rail 8 can be performed smoothly. The width of the side end member 7 is a design matter determined by the groove of the existing guide rail 8. However, if the side end member 7 is configured to be narrow, it can be adapted to many of the existing guide rails. If there is a sanitary problem, the side end member 7 may be provided inside the outer bag-like portion 5.

FIG. 2 is a side cross-sectional view of the sheet shutter having the water drop fall prevention structure of the present invention in an open state. According to the water drop fall prevention structure of the present invention, when the seat shutter is in the closed state, the ends of the pair of rod-shaped bodies that are not connected to each other are released from their own weight by contacting the floor surface, and the pair of rod-shaped bodies The outer bag-like portion 5 can be brought into contact with the floor surface without a gap by being horizontal or nearly horizontal.
FIG. 3 is a side sectional view in a closed state of the sheet shutter having the water drop fall prevention structure of the present invention. When the seat shutter is in the open state, the end portions of the pair of rod-shaped bodies that are not connected are bent by their own weight, so that the bottom surface of the outer bag-like portion 5 has a substantially arch shape, and water droplets are guided from both ends of the arch. Since it flows through 8, it is possible to solve the problem that unsanitary water droplets adhere to the luggage.

  Moreover, the water drop fall prevention structure of the present invention can be attached to a commercially available general sheet shutter. In recent years, many sheet shutters are configured such that only a lower portion can be removed with a screw member, a rivet, or the like. In such a case, the lower portion may be replaced with the water drop prevention structure of the present invention.

  Hereinafter, details of the present invention will be described by way of examples, but the present invention is not limited to the examples.

The water drop fall prevention structure of the present embodiment includes a connector 9 that movably connects the ends of the pipe 3 that is a pair of rod-shaped bodies, an inner bag-shaped portion 4 having a substantially arch-shaped bottom surface for housing these, and an inner side. A bottom surface that covers the bag-like portion and is positioned at the lower end portion of the sheet main body is composed of an outer bag-like portion 5 having a substantially arch shape.
The pair of pipes 3 used in this embodiment are stainless steel pipes having a diameter of 34 mm. Each of the inner bag-like portion 4 and the outer bag-like portion 5 is composed of a polyester sheet (SE6700 manufactured by Dynic Co., Ltd.) having a thickness of 0.78 mm.
The sandwiching plate 10 is a flat plate made of SUS, and is fixed by a fastener 6 that is a 5 mm bolt.
The connection tool 9 connects the pipe 3 so as to be connectable with bolts, and also has a role of a stopper for preventing the pipe 3 from bending beyond a predetermined angle.
The end of the pipe 3 that is not connected is fitted into the groove of the guide rail 8. Therefore, a side end member 7 made of Polypenco (registered trademark) PET is provided so that the contact portion with the guide rail 8 is not damaged.

FIG. 4 is a main part transmission front view in a closed state of a sheet shutter having a water drop fall prevention structure of the present embodiment, and FIG. 5 is a main part transmission front view in an open state of the sheet shutter. In these drawings, the arch shape is highlighted.
As can be seen from these drawings, the pipe 3 is almost horizontal in the closed state, and the pipe 3 forms a substantially arch shape in the open state. In this embodiment, the difference between the horizontal positions of the lowermost end (both ends) and the uppermost end (center portion) of the bottom surface of the outer bag-like portion 5 in the opened state is about 5 cm. Incidentally, the difference in horizontal position between the upper end portion of the sandwiching plate 10 and the lowermost end portion of the bottom surface of the outer bag-like portion 5 is about 23 cm.

FIG. 6 is a cross-sectional view of the sheet shutter according to the present embodiment as viewed from above, and FIG. 7 is a cross-sectional view transparently showing an essential part thereof. A gap of about 2 cm is provided between the pipe 3 and the guide rail 8 to prevent them from coming into contact with each other.
FIG. 8 is a side sectional view transparently showing the main part of the sheet shutter according to the present embodiment. In this state, the gap between the inner bag-like portion 4 and the outer bag-like portion 5 is designed to be about 30 mm.

According to the sheet shutter having the water drop fall prevention structure of the present embodiment having the above-described configuration, the outer bag-shaped portion 5 forms a substantially arch shape in the open state, so that water droplets are at both ends of the outer bag-shaped portion 5. Since it flows through the guide rail 8 from the top, it is possible to solve the problem of water drop dropping.
Further, in the closed state, the outer bag-like portion 5 closes the gap between the bottom surface and the guide rail 8, so that the effect of preventing insects, prevention of dust and prevention of dust intrusion can be achieved.

It is side surface sectional drawing of the conventional sheet shutter. It is side surface sectional drawing in the closed state of the sheet shutter which concerns on this invention. It is side surface sectional drawing in the open state of the sheet shutter which concerns on this invention. FIG. 3 is a front view of a principal part in the closed state of the sheet shutter according to the first embodiment. FIG. 3 is a front view of a principal part in the open state of the sheet shutter according to the first embodiment. FIG. 3 is a transparent plan view of a main part of the sheet shutter according to Embodiment 1. FIG. 7 is a main portion transmission plan view in which a part of FIG. 3 is a side cross-sectional view transparently showing a main part of the sheet shutter according to Embodiment 1. FIG. FIG. 3 is a main part transmission front view of a side end portion of the sheet shutter according to the first embodiment. It is a photograph of a gap portion between a lower bar and a guide rail in a conventional sheet shutter. 4 is a photograph of a contact portion between a lower bar and a guide rail in the sheet shutter according to the first embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet | seat body 2 Lower bar 3 Pipe 4 Inner bag-like part 5 Outer bag-like part 6 Fastener 7 Side end member 8 Guide rail 9 Connecting tool 10 Clamping plate 11 Receipt

Claims (8)

A water droplet fall prevention structure for a seat shutter composed of a seat body and a guide rail that receives and guides both ends of the seat body,
A pair of rod-shaped bodies, a connector for movably coupling the ends of the rod-shaped bodies, a bottom surface for storing these covers the substantially bag-shaped inner bag-shaped portion, the inner bag-shaped portion, and the lower end of the seat body The bottom surface is composed of an outer bag-like portion having a substantially arch shape,
When the seat shutter is in the open state, the rod-like body is bent through the coupling tool by its own weight, so that the lower end portion of the outer bag-like portion has a substantially arch shape,
A water drop fall prevention structure characterized in that when the seat shutter is in a closed state, the pair of rod-like bodies are horizontal or nearly horizontal, and the outer bag-like portion is in contact with the floor surface.   The water drop fall prevention structure according to claim 1, wherein a side end member made of synthetic resin is provided at a contact portion of the both ends of the rod-like body fitted in the groove of the guide rail with the guide rail.   3. The water drop fall prevention structure according to claim 1, wherein the connector has a role of a stopper that prevents the rod-like body from being refracted beyond a predetermined angle.   The water drop fall prevention structure according to claim 1, 2 or 3, wherein the connector has a pull-in structure for drawing the end of the rod-like body on the connector side into the connector.   The water droplet fall prevention structure according to any one of claims 1 to 4, wherein an angle formed by the pair of rods connected by the connector in the open state is approximately 170 to 176 degrees.   6. The water drop fall prevention structure according to claim 1, wherein the outer bag-like portion is constituted by a flexible sheet.   7. The water droplet dropping prevention structure for a seat shutter according to claim 1, wherein the outer bag-like portion is configured to be detachably attached to the seat body by a fixture. A sheet shutter comprising the water drop fall prevention structure according to claim 1.