JP3198838B2 - Retaining structure of slat curtain in shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter structure for preventing a slat curtain from coming off a guide rail due to wind pressure or the like.

[0002]

2. Description of the Related Art When a shutter slat curtain is in a closed state, the slat curtain is bent by external force such as wind, so that a slat curtain is prevented from coming off both side edges from a guide rail for guiding up and down of the slat curtain. Conventionally, various known techniques are known.
In the structure disclosed in Japanese Patent Application Laid-Open No. 2-85688, slat curtains are provided on both side ends of the slats constituting the slat curtain, with stopper claws whose tips projecting into the guide rails are bent in an L shape. When the ribs are bent, the retaining claws are engaged with the ridges on the inner edge of the guide rail to prevent them from falling off.

[0003] However, in the above structure for preventing falling off,
When the slat curtain is bent by the wind, the retaining claw will bite into the ridge on the inner edge of the guide rail,
If the slat curtain is bent during the elevating operation of the slat curtain, there is a problem that the slat curtain during the elevating movement is stopped, that is, it is possible to open and close the slat curtain under conditions of external force such as wind. There was a disadvantage that it could not be done.

Therefore, in order to solve this drawback, a bearing is attached to the slat instead of the retaining claw, and the outer peripheral surface of the bearing is brought into contact with the ridge on the inner edge of the guide rail, so that even when the slat curtain is bent. A structure has been devised that allows the slat curtain to be opened and closed by rolling the bearing.

[0005]

However, in the conventional retaining structure provided with the above-described bearing, when the slat curtain is bent by the wind and bent, the ridge on the inner edge of the guide rail is kept in a state where the bearing is inclined. Since the cross-sectional shape of this bearing is rectangular, one point of the outer peripheral edge is concentrated on the ridge and a load is applied, so in order to give this bearing sufficient strength, Must consist of large diameter and thick bearings. When such a bearing is provided, when the slat curtain is wound up, there is a problem that the winding diameter is increased due to the thickness of the bearing. A problem arises that must be done.

In addition, since the cross-sectional shape of the bearing is rectangular, when the slat curtain is blown by a strong wind, one point of the outer peripheral edge is caught in the ridge like the above-mentioned retaining claw. Occurs, the bearing cannot roll, and the slat curtain cannot be raised or lowered.

In order to solve the above problems, the present invention provides a slat curtain for a shutter which can be easily opened and closed along a guide rail without a slat curtain bent by the wind coming out of the guide rail. An object of the present invention is to provide a curtain retaining structure.

[0008]

Next, means for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The slat curtain retaining structure in the shutter of the present invention is provided on one surface 2b at both ends 2a of each slat 2 constituting the slat curtain 1 of the shutter, and is rotatable having an axis 6 perpendicular to the slat surface 2b. A pair of guide rails 8 for guiding the slats 2 up and down with both ends 2a of the respective slats 2 inserted into the opening grooves 9 together with the contact roller 5; 8 is formed along the guide rail 8 at an opening edge 9a of the opening groove 9 facing the slat surface 2b side where the contact roller 5 is provided, so as to reduce the width of the opening groove 9; From the one end edge 12a close to the slat surface 2b on the inner surface facing the outer peripheral surface 5a of the abutment roller 5 from the abutment roller 5 toward the other end edge 12b. It is provided with protrusions 10 having a guide surface 12 inclined at a predetermined angle, against the slat surface 2b as. The guide surface 12 is configured such that when the slat curtain 1 is bent from the side on which the contact roller 5 is provided to the opposite direction, the outer peripheral surface 5a of the contact roller 5 comes into line contact. It is inclined.

[0009]

When the external force such as wind is applied to the closed slat curtain 1 and the slat curtain 1 is pushed and bent, the contact roller 5 provided at the end 2a of each slat 2 is guided by the guide. The slat curtain 1 is locked to one of the ridges 10 of the rail 8 to prevent both ends 2a of the slat curtain 1 from coming off the guide rail 8 and coming off.

Further, even when the slat curtain 1 is being lifted and lowered by the strong wind or the like while the slat curtain 1 is moving up and down, the outer peripheral surface 5a of the contact roller 5 is inclined by the ridge portion 10. Since the rolling is performed in contact with the guide surface 12, the slat curtain 1 can move up and down along the guide surface 12.

[0011]

FIG. 1 is an exploded perspective view showing an embodiment of a slat curtain retaining structure in a shutter according to the present invention.
FIG. 2 is a plan sectional view of the slat curtain retaining structure in the embodiment.

First, the shutter slat curtain 1
Is composed of a plurality of slats 2 and each slat 2
The upper and lower curl portions 3 and 4 formed at the upper and lower edges are engaged with each other vertically so as to be freely rotatable.

The left and right ends 2a of each slat 2 are formed to be slightly thinner as shown in FIGS. 1 and 2, and both ends 2a are provided on one side which is on the outdoor side as shown in FIG. A contact roller 5 made of a radial ball bearing is provided on the surface 2b.

The contact roller 5 has a rotation center shaft 6
Are provided perpendicular to the slat surface 2b, which is one surface, and have a rotational trajectory parallel to the slat surface 2b. The contact roller 5 is formed in a rectangular cross section as shown in FIG.

The edges of both ends 2a of the slat are shown in FIG.
As shown in FIG. 2, a substantially T-shaped end piece 7 is provided so that the slats 2 connected by the curled portions 3 and 4 do not come off in the longitudinal direction of the slats 2. In addition,
The end fittings 7 are provided on every other slat 2 of each slat 2.

Next, a pair of left and right guide rails 8 for guiding the elevation of the slat curtain 1 are erected at the left and right edges (not shown) of an opening of a building or the like, and as shown in FIG. The shape member 8A and the shape member 8B having a U-shaped cross section are fixed to each other by means of welding or the like, and are formed in combination.
Are formed.

The guide rails 8 are inserted into the opening grooves 9 opposite to the left and right sides of the opening of the building, and both ends (2a) of the slat curtain 1 are inserted together with the abutment rollers 5 into the slats. It is designed to guide the curtain 1 up and down. The contact roller 5 provided on each slat 2 of the slat curtain 1 is set so as to be on the outdoor side.

As shown in FIGS. 1 and 2, the guide rail 8 has a pair of ridges 10 and 11 which narrow the opening width of the opening groove 9 and make the opening groove 9 wide open.
Are provided on both opening edges 9a of the opening groove 9 so as to face each other along the guide rail 8.

The pair of ridges 10, 11 is formed of a rod-like member having a substantially rectangular cross section. One of the ridges 10 provided on the opening edge 9a on the outdoor side has an inner surface on the back, that is,
The inner surface facing the outer peripheral surface 5a of the contact roller 5 provided on the slat is formed to be inclined at a predetermined angle and serves as a guide surface 12.

As shown in FIG. 2, the inclination of the guide surface 12 is different from that of the other protruding portion 11 and one end edge 12a which is close to the slat surface 2b so as to be along the inner wall surface of the guide rail opening groove 9. It is inclined at a predetermined angle with respect to the slat surface 2b at an angle away from the contact roller 5 toward the edge 12b.

The tilt angle will be described in detail.
When the slat curtain 1 is deflected from the outdoor side to the indoor side by an external force such as wind from a normal state, that is, a suspended state where no external force is applied, or a closed state. The end 2a is a plane parallel to a plane perpendicular to the slat surface 2b when the end 2a is inclined in the guide rail 8 (see FIG. 3).

Therefore, in the structure for preventing the slat curtain 1 from being detached in the shutter having such a structure, both ends 2a of the slat curtain 1 are guided by the left and right guide rails 8 during normal operation, as shown in FIG. As a result, a lifting (opening / closing) operation is performed.

Further, an external force such as wind is applied to the slat curtain 1 in the closed state, and the slat curtain 1 is closed.
When the slat curtain 1 is bent, as shown in FIG. 3, the contact roller 5 provided at the end 2 a of each slat 2 is locked to one of the ridges 10 of the guide rail 8, and Both ends 2a are prevented from coming off the guide rail 8 and coming off.

When the slat curtain 1 moves up and down (opens and closes), even if the slat curtain 1 is bent by strong winds or the like, the outer peripheral surface 5a of the contact roller 5 has one ridge. Abuts the guide surface 12 of the part 10,
Since the contact roller 5 can roll, the slat curtain 1 can move up and down along the guide surface 12 by the rotation of the contact roller 5.

In particular, since the inner surface of one of the ridges 10 is an inclined guide surface 12, even if the slats 2 are bent and inclined in the guide rails 8, as shown in FIG. The outer peripheral surface 5a of the roller 5 comes into line contact with the inclined guide surface 12, so that the contact roller 5 can roll, and the slat curtain 1 moves up and down along the guide rail 8 without stopping.

In addition, since the contact roller 5 is not subjected to a biased load on the guide surface 12 and the load is evenly applied to the outer peripheral surface 5a of the contact roller 5, the contact roller 5 5 can be configured with a small diameter and a small thickness, so that when the slat curtain 1 is wound up, as shown in FIG. Winding can be performed without interference, and the winding diameter can be reduced.

[0027]

As described above, in the retaining structure of the slat curtain in the shutter according to the present invention, when an external force such as wind is applied to the closed slat curtain and the slat curtain is bent by being pushed by the external force such as wind. The contact rollers provided at the ends of the slats engage with the ridges provided to reduce the width of the guide groove opening grooves, so that both ends of the slat curtain come off the guide rails and come off. This has the effect of preventing it from being lost.

Further, even when the slat curtain is lifted and lowered by the strong wind or the like while the slat curtain is moving up and down, the outer peripheral surface of the contact roller abuts on the guide surface of the ridge portion. Since the contact roller is capable of rolling, the slat curtain can be moved up and down along the guide surface by the rolling of the contact roller.

In particular, the inner surface of the ridge facing the outer peripheral surface of the contact roller has a predetermined angle with respect to the slat surface such that the inner surface is separated from the contact roller from one end edge close to the slat surface toward the other end edge. Since the inclined guide surface is used, even if the slat is bent and inclined in the guide rail, the outer peripheral surface of the contact roller comes into line contact with the inclined guide surface, and the contact roller can roll. Thus, the slat curtain can be easily moved up and down along the guide rail without stopping.

Further, since the contact roller does not receive a biased load on the guide surface, the load is evenly applied to the outer peripheral surface of the contact roller. Accordingly, when the slat curtain is wound, each slat can be wound without interference with the thickness of the contact roller, and the effect that the winding diameter can be reduced to a small diameter can be obtained. There is an effect that the storage portion of the slat curtain can be reduced in size.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a slat curtain retaining structure in a shutter according to the present invention.

FIG. 2 is a cross-sectional plan view of the slat curtain retaining structure according to the embodiment.

FIG. 3 is a plan sectional view showing the operation of the slat curtain retaining structure according to the embodiment.

FIG. 4 is a schematic sectional view showing a winding state of the slat curtain according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Slat curtain 2 ... Slat 2a ... End 2b ... One surface, slat surface 5 ... Contact roller 5a ... Outer peripheral surface 6 ... Shaft 8 ... Guide rail 9 ... Opening groove 9a ... Opening edge 10 ... Protrusion ( 12 ... guide surface 12a ... one end edge 12b ... other end edge

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 62-85688 (JP, U) JP-A 5-75395 (JP, U) JP-A 62-80989 (JP, U) JP-A 58- 151294 (JP, U) Japanese Utility Model Showa 52-18552 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E06B 9/58 E06B 9/17

Claims (1)

(57) [Claims] 1. A rotatable contact roller provided on one surface at both ends of each slat constituting a slat curtain of a shutter and having an axis perpendicular to the slat surface; A pair of guide rails for guiding the elevation of each slat in a state where both ends of the slat are inserted into the opening groove, and the contact roller of the opening groove is provided so as to reduce the width of the opening groove of the guide rail. Along the opening edge portion facing the slat surface side along the guide rail, and from one end edge close to the slat surface on the inner surface facing the outer peripheral surface of the contact roller from the other end edge to the other end edge.
Comprising a ridge having a guide surface inclined at a predetermined angle with respect to the front Symbol slat surface Te, said guide surface, said Surattoka
When the contact is provided from the side where the contact roller is provided,
When the contact roller is bent in the opposite direction,
A slat curtain retaining structure for a shutter, characterized by being inclined so as to make contact .