JP3543446B2 - Retaining structure of slat curtain in shutter - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a slat curtain retaining structure for a shutter that prevents a slat curtain from coming off a guide rail due to wind pressure or the like.
[0002]
[Prior art]
Conventionally, a slat curtain as described below is used to prevent a slat curtain of a shutter from being disengaged from a guide rail that guides up and down movement of the slat curtain by being deflected by wind pressure due to, for example, a typhoon. Is known.
[0003]
In the conventional retaining structure for a slat curtain, as shown in FIG. 4, a guide rail 103 has a guide groove 104 having a substantially U-shaped cross section for guiding a corresponding side end of the slat curtain 102 in a vertical direction. .
The guide rail 103 includes a guide rail main body 113 fixed to a structure such as a building, and a pair of inner wall members 123 and 133 rotatably attached to the guide rail main body 113. The rotation centers 105 and 105 of the inner wall members 123 and 133 are provided vertically in the middle thereof, and the rotation range of the inner wall members 123 and 133 is the side end corresponding to the free end of the guide groove 104. The portions 123a and 133a are regulated by the guide rail main body 103 so as not to open outside (toward each other) beyond a predetermined position. In addition, mufflers 106 and 106 for silencing are provided on opposed inner surfaces of the inner wall members 123 and 133.
[0004]
When the slat curtain 102 having a thickness t is bent and bent so as to be convex downward as shown by a dashed line in FIG. 4 due to wind pressure, one of the pair of slat curtains 102 (upper side in the figure) is thereby formed. The inner wall member 123 rotates counterclockwise by an angle θ about the corresponding rotation center 105 according to the displacement of the corresponding side end of the slat curtain 102. However, since the other inner wall member 133 is regulated so as not to be able to rotate counterclockwise from the illustrated state, the distance between the free end 123a of the one inner wall member 123 and the free end 133a of the other inner wall member 133 is set. Will come closer.
[0005]
As a result, the groove width s of the guide groove 104 set by the pair of inner wall members 123 and 133 is reduced until it becomes equal to the thickness t of the slat curtain 102, and the mohair 106 is also crushed. The slat curtain 102 is held by the corresponding guide groove 104 and is prevented from coming off.
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional structure for preventing the slat curtain from coming off, when the slat curtain 102 is bent and bent by wind pressure, one of the inner wall members 123 rotates by an angle θ, and its free end 123a and the other inner wall member are rotated. The slat curtain 102 is configured such that the distance from the free end 133a to the free end 133a is reduced to be equal to the thickness t of the slat curtain 102, and the side end of the slat curtain 102 is gripped. Between the inner surface of the member 123 and the free end 133a of the inner wall member 133, when the slat curtain 102 is going to bend further, there is a possibility that the slat curtain 102 may be bent around the free end 133a of the inner wall member 133 as a fulcrum. .
[0007]
Further, the inner wall member 123 is regulated so as to rotate only by the angle θ, and the width of the guide groove 104 is reduced only until the groove width s becomes equal to the thickness t of the slat curtain 102. However, when the slat curtain 102 attempts to bend due to further wind pressure, there is a problem that the slat curtain 102 comes off the guide rail 103.
[0008]
Further, since the inner wall members 123 and 133 are configured to rotate with respect to the guide rail main body 103, the number of components is increased, and the configuration is complicated. .
[0009]
In order to solve the above-described problems, the present invention can reliably prevent the slat curtain from slipping out of the guide rail when the slat curtain is bent due to wind pressure and the like, and can reduce the cost of the slat curtain in the shutter. An object of the present invention is to provide a structure for retaining a curtain.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a retaining structure for a slat curtain in a shutter according to the present invention includes a slat curtain 1 in which a plurality of slats are continuously arranged vertically, and a slat curtain 1 having a longitudinally extending portion at the left and right side ends of the slat curtain 1. A vertically extending guide rail 3 provided with an opening groove 3a for guiding the elevation of the slat curtain 1;
A retaining member 4 formed of an elastic material having a large coefficient of friction and having a substantially U-shaped cross section and attached so as to cover the inner wall of the opening groove 3a of the guide rail 3, wherein the inner wall of the opening groove of the guide rail 3 A retaining member 4 attached so as to cover the outer wall of the closing side abutting against the groove bottom of the guide rail and having a gap 6 between the outer wall of the retaining member and the inner wall side of the guide rail;
A silencing projection 5 formed of a material having a small coefficient of friction and provided at an interval to allow the side end 1a of the slat curtain 1 to be inserted into an opposing wall surface of the inner wall of the retaining member 4 and a wall surface corresponding to the groove bottom. When,
It is characterized by having.
[0011]
In addition, a plurality of slats are vertically arranged continuously, and a slat curtain 1 is vertically erected vertically at left and right side ends of the slat curtain 1 to guide the slat curtain 1 up and down. In a shutter having a guide rail 3 provided with an opening groove 3a,
A pair of retaining members 4 ', 4' formed of an elastic material having a large coefficient of friction and attached so as to cover the inner walls of the opening grooves of the guide rails 3 facing each other, and have a substantially L-shaped cross section. And retaining members 4 ′, 4 ′ that make their bent ends 4 c ′ abut against the inner wall side of the guide rail,
A muffling projection 5 formed of a material having a small coefficient of friction and provided opposite to an inner wall surface of the retaining member 4 ′ with an interval at which the side end 1 a of the slat curtain 1 can be inserted;
May be provided.
[0012]
When the slat curtain 1 is moved up and down, the side end portion 1a is moved up and down smoothly without noise between the inner walls of the retaining members 4 (4 ', 4 ") in a state of being in contact with or not in contact with only the muffling projections 5.
[0013]
Then, when the slat curtain 1 is bent and bent by the strong wind, the side end 1 a of the slat curtain 1 comes into contact with the opening portion and the inner wall surface of the retaining member 4. Then, the contact portion of the retaining member 4 with the slat curtain 1 is elastically deformed and tends to come into contact with the slat curtain 1 on the surface. Since the retaining member 4 is formed of a material having a large coefficient of friction, a resistance force such that the slat curtain 1 does not come off at the contact portion is generated, and the slat curtain 1 is sandwiched between the opening portion and the inner wall surface. , Thereby preventing the slat curtain 1 from slipping out.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1A is a cross-sectional plan view showing a slat curtain retaining structure in the shutter of the present invention.
[0015]
First, the shutter has a slat curtain 1 configured so that a plurality of horizontally long and substantially rectangular slats are vertically continuous. In the slat curtain 1, left and right side ends 1a are inserted into a pair of left and right guide rails 3 and 3 which are erected vertically in the vertical direction to guide the ascending and descending.
The slat curtain retaining structure of the present invention mainly includes a guide rail 3 provided to guide the slat curtain 1. In the following description, one of the pair of left and right guide rails 3, 3 will be described. The side is illustrated and described.
[0016]
As shown in FIG. 1A, the guide rail 3 is formed to have a substantially U-shaped cross section, having an opening groove 3a that is open on one side facing each other on the left and right sides.
On each inner wall side of the opening edge of the opening groove 3a, a fitting groove 3b which is continuous along the longitudinal direction of the guide rail 3 is formed, and a retaining member 4 described later is attached.
[0017]
The retaining member 4 is made of an elastic material having a large coefficient of friction, such as synthetic rubber or vinyl chloride resin, and is provided longitudinally in the same manner as the guide rail 3. The retaining member 4 is elongated so that the corresponding side end 1 a of the slat curtain 1 can be inserted. It has a substantially U-shaped cross section with a guide groove 4a continuing in the direction.
On each outer wall side of the opening edge of the guide groove 4a, a fitting projection 4b that can fit with the fitting groove 3b of the guide rail 3 is provided continuously in the longitudinal direction of the retaining member 4.
[0018]
On the inner wall surface of the retaining member 4 opposite to the guide groove 4a, silencing projections 5 made of a material having a small coefficient of friction such as synthetic resin are provided so as to face each other so as to open a predetermined thickness of the slat curtain 1. ing. Similarly, a silencing protrusion 5 made of a material having a small friction coefficient is provided on a wall surface corresponding to the groove bottom of the guide groove 4a. The silencing protrusion 5 may be provided continuously in the longitudinal direction of the retaining member 4 or may be provided intermittently in the longitudinal direction.
[0019]
The retaining member 4 is attached to the guide rail 3 by inserting the fitting protrusion 4b into the fitting groove 3b so as to cover the inner wall of the opening groove 3a from the opening side. At this time, the closed outer wall of the retaining member 4 is brought into contact with the groove bottom of the opening groove 3a of the guide rail 3, and a gap 6 is formed between the outer wall side of the retaining member 4 and the inner wall side of the guide rail 3. It has become.
The retaining member 4 does not need to be provided in the longitudinal direction, and may be attached so as to be intermittent in the longitudinal direction of the guide rail 3.
[0020]
The corresponding side end 1a of the slat curtain 1 is inserted into the guide groove 4a, and is guided vertically up and down along the guide groove 4a. In addition, when the slat curtain 1 is moved up and down, the side end 1a is moved up and down smoothly without noise in a state where the side end portion 1a is in contact with or not in contact with only the silencing projection 5 in the guide groove 4a.
[0021]
By the way, in the shutter provided with the slat curtain retaining structure described above, when the slat curtain 1 receives a strong wind, as shown in FIG. 1B, the slat curtain 1 becomes convex downward in the figure due to wind pressure. To bend and flex.
Thereby, the side end 1a of the slat curtain 1 comes into contact with the opening edge and the inner wall surface of the guide groove 4a of the retaining member 4. Then, the contact portion of the retaining member 4 with the slat curtain 1 is elastically deformed and tends to come into contact with the slat curtain 1 on the surface. Since the retaining member 4 is formed of a material having a large coefficient of friction, a resistance force is generated at the contact portion so that the slat curtain 1 does not come off, and the slat curtain 1 is connected between the opening edge of the guide groove 4a and the inner wall surface. The slat curtain 1 is prevented from slipping out.
[0022]
Further, when the slat curtain 1 is going to be bent by the further wind pressure, the retaining member 4 is further elastically deformed, and the load on the side end 1a of the slat curtain 1 is received. It does not lead to bending.
Further, when the slat curtain 1 attempts to bend by further wind pressure, the retaining member 4 is further elastically deformed, so that the contact area of the retaining member 4 with the slat curtain 1 is increased, and the clamping force is further increased. In addition, the slat curtain 1 does not fall out of the guide rail 3.
[0023]
Accordingly, in the slat curtain retaining structure of the shutter configured as described above, the guide groove 4a composed of the retaining member 4 formed of an elastic material having a large friction coefficient is provided in the opening groove 3a of the guide rail 3, When the slat curtain 1 bends due to wind pressure, the retaining member 4 is elastically deformed to clamp the side end 1a of the slat curtain 1, and the clamping portion is accompanied by a frictional force. 1 can be prevented from coming off from the guide rail 3.
[0024]
Further, even when the slat curtain 1 is going to be bent by further wind pressure, the retaining member 4 is further elastically deformed and the contact area with the slat curtain 1 is increased, so that the clamping force is further increased. Can be prevented from coming off.
[0025]
This slat curtain retaining structure has a simple configuration in which a retaining member 4 made of an elastic material having a large coefficient of friction is provided for the guide rail 3. Since there is no structure that regulates the movement, the cost can be reduced and the cost can be reduced.
[0026]
The retaining member 4 is not only made of an elastic material having a large coefficient of friction, but also has a noise reduction projection having a small coefficient of friction at a desired position on the inner wall of the guide groove 4a into which the side end 1a of the slat curtain 1 is inserted. Since the slat curtain 1 is normally moved up and down, the slat curtain 1 can be smoothly moved up and down without noise and in contact with only the muffling projections 5.
[0027]
Further, as another embodiment of the above-described retaining member 4, a retaining member 4 'or a retaining member 4 "as shown in Fig. 2 or Fig. 3 can be considered. The embodiment of Fig. 3 is a reference example of the present invention. It is.
The retaining member 4 'shown in FIG. 2 is not formed in a substantially U-shaped cross section, but is divided into two to form a pair, each having a fitting projection 4b' and formed in a substantially L-shaped cross section. . Each of the retaining members 4 ′, 4 ′ is formed so that the fitting projection 4 b ′ is inserted and fitted into the fitting groove 3 b so that the bent end 4 c ′ comes into contact with the inner wall side of the guide rail 3. The guide rail 3 is mounted in the opening groove 3a.
In addition, silencing protrusions 5 made of a material having a small coefficient of friction are provided on the opposing inner wall surfaces of the retaining members 4 ′, 4 ′ so as to face each other so as to open a predetermined thickness of the slat curtain 1.
[0028]
The retaining member 4 ″ shown in FIG. 3 is not configured in a substantially U-shaped cross section, but is divided into two to form a pair, each having a fitting projection 4b ″. Each of the retaining members 4 ″, 4 ″ has a free end 4 d ″ which is not in contact with the inner wall surface in the opening groove 3 a of the guide rail 3 by inserting and fitting the fitting protrusion 4 b ″ into the fitting groove 3 b. In the open groove 3a of the guide rail 3 in such a state.
In addition, silencing projections 5 made of a material having a small coefficient of friction are provided on the opposing inner wall surfaces of the retaining members 4 ″, 4 ″ so as to face each other so as to open a predetermined thickness of the slat curtain 1.
[0029]
Even with the retaining member 4 ′ or the retaining member 4 ″ configured as shown in FIG. 2 or FIG. 3, when the slat curtain 1 is normally raised or lowered, or when the slat curtain 1 is bent by wind pressure, The same effect as when the retaining member 4 having the above-described configuration is used can be obtained.
[0030]
In all the above-described embodiments, the fitting groove 3b is provided at the opening edge of the guide rail 3, and the fitting protrusion 4b (4b ', 4b) is provided at the opening edge of the retaining member 4 (4', 4 "). )), And these are inserted and fitted. However, as the guide rail 3, a ready-made guide rail having no fitting groove 3b which is generally used is adopted. If the retaining member 4 (4 ′, 4 ″) is configured to be attached by bonding or fitting, the above-mentioned retaining structure can be easily obtained for a ready-made shutter device, and the cost can be greatly reduced. It becomes possible.
[0031]
【The invention's effect】
As described above, in the slat curtain retaining structure according to the present invention, a retaining member formed of an elastic material having a large coefficient of friction is attached to the inner wall of the opening groove of the guide rail, and at a desired position on the inner wall of the retaining member, By providing the silencing projection having a small friction coefficient, when the slat curtain is normally moved up and down, the slat curtain can be moved up and down smoothly without noise while in contact with or not in contact with only the silencing projection.
In addition, when the slat curtain is bent by wind pressure, the retaining member is elastically deformed so as to clamp the side end of the slat curtain, and furthermore, the clamping portion is accompanied by a frictional force. The escape from the rail can be prevented.
[0032]
Further, even when the slat curtain 1 is going to be bent by further wind pressure, the retaining member 4 is further elastically deformed and the contact area with the slat curtain 1 is increased, so that the clamping force is further increased. Can be prevented from coming off.
[0033]
The slat curtain retaining structure has a simple configuration in which the retaining member 4 made of an elastic material having a large friction coefficient is mainly provided for the guide rail 3, so there is no complicated configuration, and the cost is reduced and the cost is reduced. be able to.
[Brief description of the drawings]
FIG. 1A is a cross-sectional plan view showing a slat curtain retaining structure in a shutter according to the present invention.
FIG. 2B is a cross-sectional plan view showing the operation in FIG.
FIG. 2 is a cross-sectional plan view showing another embodiment.
FIG. 3 is a plan sectional view showing a reference example of the present invention.
FIG. 4 is a cross-sectional plan view showing a structure for preventing a slat curtain from being removed in a conventional shutter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... slat curtain, 1a ... side end part, 3 ... guide rail, 3a ... opening groove, 4 ... retaining member, 5 ... silencing protrusion.

Claims (2)

A slat curtain in which a plurality of slats are continuously formed vertically, and an opening groove for vertically elongating the slat curtain at the left and right side end portions and vertically guiding the slat curtain are provided. Shutter with a guide rail
A retaining member formed in a substantially U-shaped cross section by an elastic material having a large coefficient of friction , and attached so as to cover an inner wall of an opening groove of the guide rail, and a closed outer wall abuts a groove bottom of the guide rail. A retaining member that is made and has a gap between the outer wall of the retaining member and the inner wall side of the guide rail ,
A muffling projection formed of a material having a small coefficient of friction and provided with a gap that allows a side end of the slat curtain to be inserted with respect to an opposing wall surface and a wall surface corresponding to a groove bottom of the inner wall of the retaining member,
A slat curtain retaining structure comprising: A slat curtain in which a plurality of slats are continuously formed vertically, and an opening groove for vertically elongating the slat curtain at the left and right side end portions and vertically guiding the slat curtain are provided. Shutter with a guide rail
A pair of retaining members formed of an elastic material having a large coefficient of friction and attached so as to cover opposed inner walls of the opening groove of the guide rail, each having a substantially L-shaped cross section, and having a bent end portion. A retaining member that makes the abutment against the inner wall side of the guide rail ,
A muffling projection formed of a material having a small coefficient of friction and provided with an interval capable of inserting a side end of the slat curtain with respect to an inner wall surface facing the retaining member,
A slat curtain retaining structure comprising:

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