JP4389214B2 - Hook structure at the edge of shutter curtain - Google Patents

Description

The present invention relates to a hook structure at the end of a shutter curtain.

A hook may be provided at the end portion of the slat to prevent the end portion in the width direction of the shutter curtain from slipping out of the guide rail when surface pressure acts on the shutter curtain that closes the opening. Hooks are generally made of metal and such hooks are described in US Pat.

If a metal hook is used, an unpleasant sound may be generated due to the contact between the metal hook and the metal guide rail. There is a desire to form from resin. The resin hook is described in Patent Document 2.

However, the resin hook is weaker than the metal hook, and if the guide rail is pry open when the opening is fully closed, the resin hook breaks and the end of the shutter curtain from the guide rail. There is a possibility that will be removed.
JP-A-8-135340 Real Kaihei 7-4778

An object of the present invention is to provide a hook structure that is excellent in strength while maintaining the advantages of a resin hook.

In order to solve such a problem, the technical means adopted by the present invention is a hook structure that is attached to an end of a shutter curtain formed by connecting a plurality of slats in the vertical direction, and is attached to the end of the shutter curtain. At least a portion of the slats of the slats without the resin hooks located between the slats to which the resin hooks are attached are attached to the end portions of the slats with the resin hooks at predetermined intervals. Wearing a strong security hook, the resin hook and the security hook are in contact with the part (including the locked part) where the resin hook faces the guide groove in the guide rail before the security hook. is formed in a shape and size, when the surface pressure is applied to the shutter curtain in the normal closing time and the fully closed state of the shutter curtain, the security hook guide rail Without contacting the part facing the guide groove, only the resin hook is in contact with the part facing the guide groove in the guide rail. In addition, the security hook is locked to the locked portion to prevent the guide rail from being opened .

In one preferred embodiment, the security hook having a strength higher than that of the resin hook is made of metal, and a steel hook is exemplified as the metal hook. In one mode in which the resin hooks are mounted every predetermined number of slats, the resin hooks are mounted every other slat. Furthermore, in one aspect, the resin hooks and the crime prevention hooks are attached to the end portions of the slats alternately in the vertical direction. Note that the resin hooks do not necessarily have to be mounted every other number, and every other and every two hooks may be mixed. Further, the resin hook may be continuously attached to the upper and lower adjacent slats in a part of the shutter curtain.

In one preferred embodiment, both the resin hook and the crime prevention hook have a main body portion extending from the slat end portion in the finding direction, and a locking portion extending in the expecting direction on the distal end side of the main body portion, Each locking part is configured to be locked to the locked part, and the body part of the resin hook is thicker than the body part of the crime prevention hook (the dimension in the expected direction is larger). The distance in the direction of finding between the hook locking part and the locked part is smaller than the distance in the direction of finding between the locking part of the security hook and the locked part.

During normal use (when the shutter curtain is normally opened or closed, or when it is fully closed), the resin hook contacts the part of the guide rail that faces the guide groove (mainly the locked part), so the noise reduction effect is achieved. can get.

For the guide rail pry-opening, the security hook having a strength greater than that of the resin hook is locked to the locked portion, so that the guide rail can be prevented from being pry-open even if the resin hook is broken. .

The present invention will be described based on a garage shutter which is one embodiment. FIG. 1 is a front view of a garage shutter, and an opening of the garage is opened and closed by the shutter. FIG. 2 is a longitudinal sectional view of a shutter installed in the garage, and FIG. 3 is a transverse sectional view thereof. The shutter device includes a guide rail 1 standing on the left and right sides of the opening and a shutter case 2 installed above the opening. A winding shaft 3 installed horizontally in the shutter case 2, a shutter curtain 4 wound around the winding shaft 3, and an opening / closing device 5 that rotationally drives the winding shaft 3. The shutter curtain 4 fed out from the take-off shaft 3 descends while being guided by the guide rail 1 at both ends in the width direction and closes the opening.

The guide rail 1 includes opposing side walls 10 and 11 extending in the direction of finding, a bottom wall 12 extending in the direction of expectation, and front walls 13 and 13 extending in the direction of expectation with a gap. And the space between the inner surfaces of the side walls 10 and 11 forms a guide groove G that receives and guides the widthwise end of the shutter curtain 4, and the gap between the front walls 13 and 13 is the entrance of the shutter curtain 4. Is forming. In this specification, the surface direction of the shutter curtain 4 or the opening width direction of the opening is regarded as the direction of finding (direction of arrow A in FIG. 3), and the thickness direction of the shutter curtain 4 or the direction across the opening is expected (see FIG. 3). Arrow B direction). Further, the opening side is referred to as “front”, and the side far from the opening (housing side) is referred to as “rear” or “bottom”.

In the guide rail inner space, that is, in the guide groove G, locked portions 14 and 14 extending in the expected direction are provided. In the illustrated example, the locked portions 14 and 14 are projected by extending portions located on the bottom side of the inner surfaces of the side walls 10 and 11 so as to face each other so as to be close to each other.

The shutter curtain 4 is configured by connecting long slats 40 in the vertical direction. Resin hooks 6 are attached to the width direction end of the shutter curtain 4 every other slat 40. Yes. In this embodiment, the resin hook 6 not only functions as a wind-resistant hook, but also serves as an end processing member of the slat 40, and the slat 40 connected in the vertical direction by the resin hook 6 is provided. Regulates shifting in the length direction.

The resin hook 6 extends from the end of the slat 40 toward the bottom of the guide groove G in the finding direction, and extends in the expected direction integrally formed on the distal end side of the body 60. The engaging portion 61 is formed in a substantially T shape in plan view, and a mounting portion 62 to the end portion of the slat 40 is integrally formed on the base end side of the main body portion 60. An end sealing portion 63 is integrally formed between 60 and the mounting portion 62. The mounting portion 62 has a shape and size corresponding to the cross-sectional shape and size of the hollow portion of the slat 40, and the end sealing portion 63 has a shape and size larger than the cross-sectional shape of the hollow portion of the slat 40. The upper and lower end portions reach the upper and lower interlock portions 41 of the slat 40. The resin hook 6 is attached to the end portion of the slat 40 by inserting the attachment portion 62 into the hollow portion of the end portion of the slat 40, and in the state where the resin hook 6 is attached to the end portion of the slat 40, The partial sealing portion 63 covers and seals the hollow portion at the end of the slat 40. As shown in FIG. 7, the upper and lower end portions of the end sealing portion 63 extend to the interlock portion 41 between the upper and lower adjacent slats 40 to restrict the slats 40 from shifting in the length direction. Yes.

A steel hook 7 exemplified as a metal hook is attached to an end portion in the width direction of the slat 40 to which the resin hook 6 is not attached. The steel hook 7 is formed in a substantially L shape in plan view from a main body portion 70 extending in the direction of finding and a locking portion 71 extending integrally in the front end side of the main body portion 70 and extending in the expected direction. A mounting portion 72 to the end of the slat 40 is formed on the base end side of the main body 70. The steel hook 7 has a greater strength than the resin hook 6 and serves as a security hook.

A mounting mode of the steel hook 7 exemplified as the resin hook 6 and the metal hook will be described. In both Example 1 and Example 2, resin wind-resistant hooks are provided at the ends in the width direction of the slats every other slat in the vertical direction. This is because, as described above, the resin wind-resistant hook also serves as the processing member at the end of the slat. The steel crime prevention hook is provided on a slat having a height of about 1500 cm from the floor surface when the shutter is fully closed. In Example 1, the steel crime prevention hooks are also provided at the end portions in the width direction of the slats every other slat, like the resin wind resistant hooks, and the resin wind resistant hooks and the steel crime prevention hooks are provided at the end portions of the shutter curtain. They are provided alternately in the vertical direction. In Example 2, every other steel crime prevention hook is provided with respect to the slat which is not equipped with the resin windproof hook. The mounting manner of the resin hook and the metal hook is not limited to the one shown in the figure, and the resin hook is attached to the slat every predetermined number of sheets, and the metal hook is attached to the slat without the resin hook. It may be provided in at least some of the slats. By doing so, metal hooks are provided between resin hooks provided at intervals in the vertical direction. The metal hook is sandwiched between the resin hooks at the top and bottom to prevent the metal hook from coming into contact with the portion of the guide rail facing the guide groove in cooperation with the shape and dimensions of these hooks described below. To do.

The shapes and dimensions of the resin hook 6 and the steel hook 7 will be described. As shown in FIG. 9, the expected dimension of the main body 60 of the resin hook 6, that is, the thickness t <b> 1 is larger than the expected dimension of the main body 70 of the steel hook 7, that is, the thickness t <b> 2. Therefore, in FIG. 7, the inner and outer surface portions of the main body portion 70 of the steel hook 7 are accommodated between the vertical virtual surfaces passing through the inner and outer surface portions of the main body portion 60 of the resin hook 6 that is adjacent to the upper and lower sides of the steel hook 7. It will be.

The finding dimension of the main body 60 of the resin hook 6, that is, the protruding length from the end of the slat 40 is smaller than the finding dimension of the main body 70 of the steel hook 7, that is, the protruding length from the end of the slat 40. Have dimensions. As a result, the distance d1 between the locking portion 61 of the resin hook 6 and the locked portion 14 is smaller than the distance d2 between the locking portion 71 of the steel hook 7 and the locked portion 14. ing.

Since the resin hook 6 and the steel hook 7 are configured as described above, when the surface pressure acts on the shutter curtain 4 and the slat 40 moves in the expected direction when the opening is fully closed, the resin hook Since the six main body portions 60 abut on the locked portion 14, the main body portion 70 of the steel hook 7 does not contact the locked portion 14. When the slat 40 moves in the direction of finding due to the surface pressure acting on the shutter curtain 4 when the opening is fully closed, the locking portion 61 of the resin hook 6 or the end of the resin hook 6 is sealed. Since the part 63 contacts the locked part 14, the locking part 71 of the steel hook 7 does not contact the locked part 14. Accordingly, even when the shutter curtain is fully closed and when the shutter curtain is normally opened and closed, only the resin hook 6 contacts the guide rail 1, so that a silent effect can be obtained. Further, in the illustrated example, the guide rail 1 is made of an aluminum material, and even if the resin of the resin hook 6 and the aluminum of the guide rail 1 cooperate and come into contact with each other, a further silent effect is achieved. Is obtained.

Even when the resin hook 6 is broken when the guide rail is opened when the opening is fully closed, the steel crime prevention hook 7 is locked to the locked portion after the resin hook 6 is broken. Since it is locked to 14, it can be effectively prevented from opening.

In the embodiment, the case where the resin hooks are mounted every other slat has been described. However, the mounting of the resin hooks is not always required. Depending on the shape of the resin hook (for example, when the resin hook does not perform end processing), the resin hook may be continuously attached at a certain portion in the height direction of the shutter curtain. Alternatively, resin hooks may be mounted every two slats. The shapes of the resin hook 6 and the steel crime prevention hook 7 are not limited to those illustrated.

FIG. 10 shows a hook having the same effect as the hook structure of the present invention. This is a hook structure that is attached to the end of a shutter curtain formed by connecting a plurality of slats in the vertical direction, and is composed of a material having sufficient strength (such as a metal such as steel). The hook structure is characterized in that at least a surface in contact with the guide rail is covered with a resin. The hook as a whole has a T-shape in a plan view from a main body portion 600 extending from the end portion of the slat and a locking portion 610 formed on the front end side of the main body portion 600, and the surface is made of resin, In addition, a metal hook (for example, made of steel) having a T-shape in a plan view, which includes a main body portion 700 extending from the end portion of the slat and a locking portion 710 formed on the distal end side of the main body portion 700 is incorporated. By covering the peripheral surface of a metal hook, which is stronger than resin, with the resin, the hook is connected to the guide rail via the resin that forms the peripheral surface of the hook even when fully closed and when the shutter is normally opened and closed. It will be in contact with the to-be-latched part, and a silent effect is always obtained. Moreover, the built-in metal hook acts against the prying, thereby effectively preventing the prying.

The present invention can be used for the structure of the hook of the shutter curtain end portion of the shutter device.

It is a front view of a garage shutter. It is a longitudinal cross-sectional view of the shutter installed in a garage. It is a cross-sectional view of the shutter installed in the garage. It is a cross-sectional view of a slat end part and a guide rail. It is a figure which shows resin-made hooks. It is a figure which shows a steel hook. It is a fragmentary longitudinal cross-sectional view of a shutter curtain. It is a figure which shows the attachment aspect of a resin hook and a steel hook. FIG. 5 is a partially enlarged view of FIG. 4, illustrating a positional relationship between a resin hook and a steel hook in a plan view. It is the schematic of another hook.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 4 Shutter curtain 40 Slat 6 Resin hook 60 Main body part 61 Locking part 7 Steel hook 70 Main body part 71 Locking part 14 Locked part
G Guide groove

Claims (5)

A hook structure attached to an end of a shutter curtain formed by connecting a plurality of slats in the vertical direction,
At the end of the shutter curtain, a resin hook is attached every predetermined number of slats,
Attach a security hook that is stronger than the resin hook at the end of at least some of the slats that are not fitted with the resin hook that is located between the slats that are fitted with the resin hook,
Plastic hooks and security hooks, plastic hooks are formed in a shape and dimensions so as to contact a portion facing the guide groove of the previously guide rail than security hooks, Ya normal opening and closing of the shutter curtain The part where only the resin hook faces the guide groove in the guide rail without contacting the part where the security hook faces the guide groove in the guide rail when surface pressure acts on the shutter curtain in the fully closed state The shutter curtain is characterized in that, even if the resin hook is broken, the security hook is locked to the locked portion to prevent the guide rail from being opened. End hook structure. 2. The shutter curtain hook structure according to claim 1, wherein the security hook is made of metal. 3. The shutter curtain end hook structure according to claim 1, wherein the resin hooks are mounted every other slat. 4. The shutter curtain end hook structure according to claim 3, wherein the resin hook and the security hook are alternately attached to the end of the slat in the vertical direction. Each of the resin hook and the security hook has a main body portion extending from the end of the slat in the finding direction, and a locking portion extending in the looking direction on the distal end side of the main body portion. The body portion of the resin hook is thicker than the body portion of the security hook, and the engagement portion of the resin hook and the portion to be locked are 5. The shutter curtain end hook structure according to claim 1, wherein the distance in the direction of finding is smaller than the distance in the direction of finding between the locking part and the locked part of the security hook. .

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