KR102211279B1 - Aluminum shutter with windproof and high speed function - Google Patents

Abstract

The present invention relates to a high-speed aluminum shutter having wind resistance. The high-speed aluminum shutter comprises: a shutter box in which a winding part is installed; a shutter part installed to be wound or unwound from the winding part, controlled so that the same is raised or lowered, and having a plurality of unit slats vertically connected and assembled to each other; guide rails installed on both left and right sides of a lower portion of the shutter box, and guiding the raising and lowering of the shutter part; end caps inserted and fixed to sides of the unit slats of the shutter part; bearing-type wind locks having sides inserted and fixed to the unit slats of the shutter part, and having outer ends inserted and supported by the guide rails to guide the raising and lowering of the shutter part and enable high-speed operation; and a bottom bar connected and assembled to a unit slat located at the lowermost end of the shutter part. The bearing-type wind locks each include: a slat insertion part inserted and fixed to the unit slat, and having one or more fastening holes formed therethrough; an extended stepped part formed to extend from the slat insertion part, and having a stepped structure by being extended from the slat insertion part to be held on an end of the unit slat; a bearing fastening part extended from the extended stepped part; and a bearing part inserted and rotatably coupled to the bearing fastening part. According to the present invention, the high-speed aluminum shutter can have an improved structure and elements organically coupled to each other by efficient structural arrangement design, thereby being easily installed for use, can increase durability, thereby increasing a wind resistance function, and enables high-speed operation and support stable operation when being raised or lowered.

Description

Aluminum wind-resistant high-speed shutter {ALUMINUM SHUTTER WITH WINDPROOF AND HIGH SPEED FUNCTION}

The present invention relates to an aluminum wind-resistant high-speed shutter, and more particularly, it enables easy installation through structural improvement, and increases the durability according to the installation, thereby improving the wind-resistant function. In addition, high-speed operation when the shutter is raised or lowered. The present invention relates to an aluminum wind-resistant high-speed shutter that makes it possible and proposes a structural arrangement design to easily secure an installation space during construction.

In general, a shutter is a device that is installed at the entrance of a building or facility to prevent external heat from being transferred to the interior, and also prevents the fire from spreading to the building or facility in the event of a fire.

Such a shutter is configured to open and close the shutter while being wound or released by a rotating shaft mounted on a shutter box located above the door frame by successively combining slats made of a long and narrow steel plate or aluminum.

In addition, in various industrial facilities including airplane hangars, power plants, factories, plants, etc., wind-resistant shutters are installed and used. Usually, a plurality of flexible slats are continuously combined to open and close the shutter by hoisting or lowering the shutter. It is specifically designed to open and close the shutter by raising and lowering the shutter according to the rotational direction of the rotating shaft mounted on the shutter box above the guide rail.

The wind-resistant shutter as described above may be made of one shutter having a size capable of opening and closing the entire entrance door of a facility, and a guide rail, which is a fixed column for fixing the shutter, and a connection device connecting the guide rail and the shutter, The end cap that connects the plurality of slats formed must be able to withstand strong winds such as typhoons, so strong durability is required.

However, conventional wind-resistant shutters are difficult to install and have a problem that durability decreases during installation, and the diameter of the end of the shutter is increased due to the overlap of the end cap and the connecting device on the shaft when the shutter is rolled up and dried. As it becomes large, it is difficult to secure a space when constructing a wind-resistant shutter, and thus, there is a problem in that the speed at which the shutter is raised or lowered is lowered.

Korean Patent Publication No. 10-1912425 Republic of Korea Utility Model Publication No. 20-0470893

The present invention has been devised in consideration of and solving the above-described conventional problems, enabling easy installation through structural improvement, and improving the durability according to installation to improve the wind pressure resistance function. The purpose of this is to provide an aluminum wind-resistant high-speed shutter that enables a high-speed operation during strong time as well as a stable operation execution.

An object of the present invention is to provide an aluminum wind-resistant high-speed shutter having a structural arrangement design to easily secure an installation space during construction.

An aluminum wind-resistant high-speed shutter according to the present invention for achieving the above object includes: a shutter box in which a winding unit is installed; A shutter unit installed so as to be wound or unwound on the winding unit to control elevating and descending, and connecting and assembling a plurality of unit slats in an up-down direction; Guide rails installed on both sides of the lower left and right sides of the shutter box and guiding the elevation of the shutter unit; An end cap side-inserted and fixed to the unit slat of the shutter unit; A bearing-type windlock that guides the elevation of the shutter unit and enables high-speed operation by inserting and fixing one side portion into the unit slat of the shutter unit, and inserting and supporting the outer end portion into the guide rail; Including a bottom bar connected to the unit slat located at the lowermost end of the shutter unit and assembled, wherein the bearing type windlock is inserted and fixed into the unit slat, and a slat insertion through which at least one fastening hole is formed part; An extended stepped portion having a stepped structure extended compared to the slat inserting portion so as to be formed to be extended to the slat insertion portion and formed to be engaged with the end of the unit slat; A bearing fastening portion extending and formed on the extended stepped portion; It characterized in that it comprises a; a bearing portion that is inserted and arranged to be rotatably coupled to the bearing fastening portion.

Here, the bearing-type windlock is fastened to the unit slats of the shutter unit at regular intervals; The unit slat in which the bearing-type windlock is installed is formed through a pin insertion hole corresponding to the fastening hole of the slat insertion part, and the bearing-type windlock is fixedly installed on the unit slat of the shutter unit through fastening using a fastening pin. I can.

Here, the unit slat is a slat body made of an aluminum material; A gasket made of a rubber material as being fitted and fixed to each of the upper inner and lower outer sides of the slat body, wherein the slat body includes an upper connecting portion having an annular structure bent from an upper side to a lower side; A panel-type profile structure extending from the lower end of the upper connection part and integrally formed, and having an inner space of a vertically divided structure for inserting and placing an end cap or a bearing-type windlock, wherein a slat part having an upper gasket coupling part formed inside the upper part ; It may have a configuration including a lower end ring portion having an annular structure that extends from the lower end of the slat portion and is integrally bent from the lower side to the upper side and a lower end connection portion having a lower gasket coupling portion formed on the outside.

Here, the guide rail includes a first guide rail disposed inside and a second guide rail disposed outside the first guide rail in a state where one side is fitted to the first guide rail and the other side is screwed. It is provided, as a whole, is a profile structure made of an inverted structure; The first guide rail includes a bearing guide portion inserted and guided by a bearing portion of the bearing type windlock, and a pair of protrusions formed and spaced apart so as to face each other by being positioned at an inner front end of the bearing guide portion. It is possible to have a configuration provided with a brush coupling portion configured to insert and place the brush.

Here, the bearing-type windlock may be fastened and installed for every 6 to 10 steps of a unit slat side, which is connected and assembled in an upward direction starting from the first 3rd to 5th steps of the lower side where the bottom bar is connected to the lowermost side.

Here, the bottom bar, a slat-shaped structure made of an aluminum material; A bottom rubber made of a rubber material as being fitted and fixed to the lower end of the slat-shaped structure, wherein the slat-shaped structure has an annular structure bent from an upper side to a lower side, and is a unit slat located at the lowermost end of the shutter unit. The upper connection ring portion for assembling connected to; A bottom slat portion extending from the lower end of the upper connection ring portion and formed integrally, and made of a panel-shaped profile structure having an inner space of a structure divided up and down; It is formed integrally extending from the bottom of the bottom slat, the bottom rubber coupling portion for fitting and coupling the bottom rubber; may have a configuration including a.

According to the present invention, it is possible to easily install and use by providing an organic combination structure by structural improvement and efficient structural arrangement design, and increase the durability according to use, thereby improving the wind pressure resistance function. It is possible to provide an aluminum wind-resistant high-speed shutter capable of supporting a stable operation execution as well as enabling a high-speed operation when driving down.

According to the present invention, it is possible to provide an aluminum wind-resistant high-speed shutter having a structural arrangement design that can easily secure an installation space during construction, and it is possible to increase the service life by improving the wind-resistant function and supporting stable high-speed operation. It can provide an aluminum wind-resistant high-speed shutter.

1 is an installation state diagram showing an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
2 is a plan view showing an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
3 is a cross-sectional view showing an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
4 is a detailed cross-sectional view showing an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
5 is a cross-sectional view showing a guide rail in an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
6 is an exploded view including a bearing-type wind lock, an end lock, and a slat in an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
7 is a block diagram showing a slat in an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.
8 is a block diagram showing a bottom bar in an aluminum wind-resistant high-speed shutter according to an embodiment of the present invention.

A preferred embodiment of the present invention will be described with reference to the accompanying drawings, and it will be possible to better understand the objects and configurations of the present invention, and features thereof, through such detailed description.

Aluminum wind-resistant high-speed shutter 1 according to an embodiment of the present invention, as shown in Figs. 1 to 8, the shutter box 10, the shutter unit 20, the guide rail 30, the end cap 40, It consists of a structure including a bearing type wind lock 50 and a bottom bar 60.

The shutter box 10 is a component for automatically winding or releasing the shutter unit 20 formed by connecting and assembling unit flats.

The shutter box 10 enables opening and closing of the shutter 1 side through driving control on the side of the shutter unit 20 using power, and supports high-speed operation of the shutter 1.

To this end, a motor 11 is mounted on the shutter box 10, and a winding unit including a shaft 12 connected to the motor 11 and horizontally disposed to rotate clockwise or counterclockwise is installed. .

The shutter unit 20 is installed so that the upper end is coupled to the winding unit installed in the shutter box 10, that is, the shaft 12 to control elevating and descending through rotational driving of the motor 11.

That is, the shutter unit 20 is installed to be wound or released through rotational driving of the motor 11, and thereby functions to open and close the shutter 1 side.

At this time, the shutter unit 20 is a configuration in which a plurality of unit slats 100 are connected and assembled in the vertical direction, and is made of a flexible structure capable of being wound.

The unit slats 100 constituting the shutter unit 20 are composed of a plurality, but all have the same configuration.

In detail, the unit slat 100 is a slat body 110 made of an aluminum material and a gasket 120 made of a rubber material as being fitted and fixed to the upper inner and lower outer sides of the slat body 110, respectively. Include.

The slat body 110 is formed integrally with an upper connecting portion 111 having an annular structure bent from an upper side to a lower direction, and extending from the lower end of the upper connecting portion 111 and integrally formed with an end cap 40 or a bearing type wind lock. As a panel-shaped profile structure having an inner space of a structure divided up and down for inserting and placing 50, the slat portion 112 having an upper gasket coupling portion 112a formed inside the upper portion, and the lower end of the slat portion 112 It can be configured to include a lower ring part 113a having an annular structure that is extended from and formed integrally and bent from the lower side to the upper side and a lower connection part 113 formed with a lower gasket coupling part 113b on the outside. have.

That is, the unit slat 100 can be connected and assembled between the unit slats using the upper connection part 111 and the lower ring part 113a of the slat body 110, and through this, the shutter part 20 can be configured. I can.

The gasket 120 is provided to be inserted into and fixed to the upper gasket coupling portion 112a and the lower gasket coupling portion 113b on the slat body 110 side, respectively, and a shutter portion ( During the lifting operation by winding or unwinding of 20), it performs a function of protecting the shutter unit 20 by exerting a buffer function from the inside and outside.

In addition, the shutter unit 20 can increase its own durability by improving the structure and increase its service life through a configuration including the slat body 110 and the gasket 120 having the above-described structure. It can provide an advantage that can improve the wind pressure function.

The guide rail 30 is positioned on both sides of the lower left and right of the shutter box 10 to be installed upright, and is a component that guides the elevation of the shutter unit 20 side formed by connecting and assembling the unit slats 100. .

The guide rail 30 may be made of an aluminum material.

The guide rail 30 has a first guide rail 31 disposed inside for improved durability and a stable guide function, and one side is fitted to the first guide rail 31 and the other side is screwed. It may be provided as a second guide rail 32 disposed outside the first guide rail 31.

That is, the first guide rail 31 and the second guide rail 32 are entirely formed in an inverted shape structure by mutual bonding, and are molded into a profile structure through double extrusion.

At this time, the first guide rail 31 includes a bearing guide portion 31a in which the bearing portion 54 of the bearing type windlock 50 is inserted and arranged, and an inner front of the bearing guide portion 31a. ) It can have a configuration including a brush coupling portion (31b) positioned at the front end to face each other, formed protruding and spaced apart from each other, and inserted and arranged to insert the brush (70).

Here, the brush 60 may prevent dust or foreign matter from being injected into the guide rail 30 side.

The end cap 40 is inserted from the side of the unit slat 100 of the shutter unit 20 and is positioned on both left and right sides to be fixed, and functions to improve durability of the shutter unit 20 side.

The end cap 40 may be provided with an aluminum material or a plastic material such as polyethylene, and extends to the insertion part 41 and the insertion part 41 inserted into the inner space of the unit flat 100 It may be formed integrally and formed in the inner space and configured as an outer exposed portion 42 that is exposed and disposed to the outside.

In this case, the insertion part 41 may be configured as a separate body to be inserted into a shape corresponding to the upper and lower partitioned spaces in the case of forming the upper and lower partitioned space in the inner space of the unit flat 100. .

The bearing-type wind lock 50 has one side inserted and fixed to the unit slat 100 constituting the shutter unit 20, and the outer end is inserted and supported by the guide rail 30 to increase the shutter unit 20 It is a component provided to guide the descent and support high-speed operation.

At this time, the bearing type wind lock 50 is inserted and fixed to the unit slat 100 on the side of the shutter unit 20, and the slat insertion portion 51 through which one or more fastening holes 51a are formed, and the slat insertion The extended stepped portion 52 having a stepped structure extended compared to the slat insertion portion 51 so as to be extended to the portion 51 and formed to be hooked to the end of the unit slat 100, and the extended stepped portion 52 It may be configured to include a bearing fastening part 53 that is formed to be extended, and a bearing part 54 that is inserted and disposed in the bearing fastening part 53 and is rotatably coupled.

Here, the bearing-type wind lock 50 is coupled to the unit slats 100 constituting the shutter unit 20 at intervals at regular intervals.

To this end, a pin insertion hole 114 corresponding to the fastening hole 51a of the slat insertion portion 51 is formed through the unit slat 100 in which the bearing-type windlock 50 is installed.

Accordingly, the bearing-type wind lock 50 may be fixedly installed on the unit slat 100 of the shutter unit 20 through fastening using a fastening pin 80.

That is, the bearing-type wind lock 50 is installed corresponding to each of the left and right ends of the shutter unit 20.

In more detail, the bearing-type wind lock 50 is a unit slat 100 side 6 steps connected and assembled in an upward direction starting from the first 3 to 5 steps of the lower side where the bottom bar 60 is connected to the lowermost side. It can be fastened and installed every 10 stages, and through this, it is possible to provide an advantage of stably implementing high-speed operation as well as improving the wind pressure resistance function by increasing the durability of the shutter unit 20 side.

Here, the bearing-type wind lock 50 includes a slat insertion portion 51 through which a fastening hole 51a is formed, and an extended stepped portion 52 having a stepped structure that is expanded compared to the slat insertion portion 51. And the bearing fastening portion 53 formed by extending from the extended stepped portion 52 may have an integral configuration, but may be made of an aluminum material.

Here, the bearing part 54 may be a ball bearing to provide a stable rotational force.

The bottom bar 60 is a component connected to and assembled to the unit slat 100 located at the lowermost end of the shutter unit 20.

The bottom bar 60 includes a slat-type structure 61 made of an aluminum material, and a bottom rubber 62 made of a rubber material as being fitted and fixed to the lower end of the slat-like structure 61.

At this time, the slat-shaped structure 61 has an annular structure bent from an upper side to a lower side, and the upper connection ring portion 61a for connecting and assembling the unit slat 100 located at the lowermost end of the shutter unit 20 , A bottom slat portion 61b made of a panel-shaped profile structure extending from the lower end of the upper connection ring portion 61a to be integrally formed and having an inner space of a vertically divided structure, and at the bottom of the bottom slat portion 61b It may be configured to include a bottom rubber coupling portion 61c that extends and is integrally formed and allows the bottom rubber 62 for airtightness to be fitted and fixed.

Meanwhile, a reinforcing material may be embedded in the inner space of the unit slat 100 on the shutter unit 20 side and the inner space on the guide rail 30 side provided as a profile structure to improve durability and secure heat insulation.

At this time, the reinforcing material may be provided in such a manner that the base resin is composed of a flame-retardant resin in a weight ratio of 1: 0.5 to 1, and a mixture obtained by stirring and mixing is filled in each inner space, and then foamed.

In addition, the reinforcing material may be provided by extruding a mixture obtained by mixing a flame-retardant resin in a weight ratio of 1: 0.5 to 1 in a base resin, and then filling the mixture therein.

Here, the base resin may be at least one or more selected from polystyrene, polyethylene, polypropylene, and polyurethane.

Here, the flame-retardant resin is a volcanic stone powder for imparting flame retardancy to any one of a melamine resin, a phenol resin, and a urea resin, zeolite for enhancing thermal insulation, methylcellulose for controlling viscosity, hardening and self-extinguishing properties. It may be made of a composition containing sodium silicate for imparting.

At this time, it may be composed of 30 to 50 parts by weight of fossilite powder, 10 to 30 parts by weight of zeolite, 1 to 5 parts by weight of methylcellulose, and 10 to 30 parts by weight of sodium silicate with respect to 100 parts by weight of the main material.

Meanwhile, the unit slats 100 and the guide rails 30 constituting the shutter unit 20 may be provided with a coating layer formed by powder coating on their surfaces to reinforce physical properties and have functionality.

Here, the coating layer includes a base paint in which at least one selected from polyurea, polyester, and acrylic is used; A curing agent using polyethylene polyamine or polyamide amine; At least one selected from polytetrafluoroethylene (PTFE), fluoroethylene propylene (FEP), tetrafluoroethylene perfluoroalkyl vinyl ether (PFA), polyvinyladenum fluoride (PVDF), and homopolymer polyvinyladenum fluoride Teflon resin used above; And a polyalkyl silicate having a structure substituted with an alkyl group, a methyl group, or an ethyl group in the main chain and the side chain.

At this time, it may be composed of 10 to 100 parts by weight of a curing agent, 5 to 30 parts by weight of a Teflon-based resin, and 5 to 20 parts by weight of a polyalkyl silicate with respect to 100 parts by weight of the base paint.

Here, the base paint may impart weather resistance and hardness, the curing agent may induce energy saving through low temperature curing, the Teflon resin may impart fouling resistance, and the polyalkyl silicate may have self-purifying properties. And fouling resistance can be imparted.

Accordingly, through the aluminum wind-resistant high-speed shutter 1 according to the present invention having the above-described configuration, it can be easily installed by providing an organic coupling configuration through structural improvement and efficient structural arrangement design, and increase durability according to use. As a result, it is possible to improve the wind pressure resistance function, and in addition, it is possible to provide an advantage of supporting stable operation execution as well as enabling high-speed operation when the shutter is driven up and down.

The above-described embodiment is merely a description of a preferred embodiment of the present invention, and is not limited to this embodiment, and various modifications and variations are made by those skilled in the art within the spirit and scope of the present invention. It will be said that this can be achieved, and it will be said to fall within the scope of the technical rights of the present invention.

10: shutter box 20: shutter unit
30: guide rail 40: end cap
50: bearing type wind lock 51: slat insert
51a: fastening hole 52: extended stepped portion
53: bearing fastening portion 54: bearing portion
60: bottom bar 100: unit slat
110: slat body 111: upper connection
112: slat portion 112a: upper gasket coupling portion
113: lower connection part 113a: lower hook part
113b: lower gasket coupling part

Claims (6)

A shutter box in which a winding unit is installed; A shutter unit installed so as to be wound or unwound on the winding unit to control elevating and descending, and connecting and assembling a plurality of unit slats in an up-down direction; Guide rails installed on both sides of the lower left and right sides of the shutter box and guiding the elevation of the shutter unit; An end cap side-inserted and fixed to the unit slat of the shutter unit; In the aluminum wind-resistant high-speed shutter comprising a; bottom bar (bottom bar) is assembled to be connected to the unit slat located at the lowermost end of the shutter unit,
A bearing-type windlock that guides the elevation of the shutter unit and enables high-speed operation by inserting and fixing one side portion into the unit slat of the shutter unit, and inserting and supporting the outer end portion into the guide rail; Including,
The bearing-type windlock may include a slat insertion part inserted and fixed into the unit slat and having one or more fastening holes through; An extended stepped portion having a stepped structure extended compared to the slat inserting portion so as to be formed to be extended to the slat insertion portion and formed to be engaged with the end of the unit slat; A bearing fastening portion extending and formed on the extended stepped portion; A bearing portion insertedly disposed and rotatably coupled to the bearing fastening portion; Including,
The unit slat is a slat body made of an aluminum material; A gasket made of a rubber material as being fitted and fixed to each of the upper inner and lower outer sides of the slat body; Including,
The slat body may include an upper connection part having an annular structure bent from an upper side to a lower side; A panel-type profile structure extending from the lower end of the upper connection part and integrally formed, and having an inner space of a vertically divided structure for inserting and placing an end cap or a bearing-type windlock, wherein a slat part having an upper gasket coupling part formed inside the upper part ; A lower end connection portion extending from the lower end of the slat portion and integrally formed, and forming a lower end ring portion having an annular structure bent from the lower side to the upper side on the inner side and a lower gasket coupling portion on the outside; Including,
The bottom bar may include a slat-shaped structure made of an aluminum material; A bottom rubber made of a rubber material as being fitted and fixed to the lower end of the slat-shaped structure; Including,
The slat-shaped structure has an annular structure bent from an upper side to a lower side, and includes an upper connection ring part for connecting and assembling a unit slat located at a lower end of the shutter unit; A bottom slat portion formed of a panel-shaped profile structure extending from a lower end of the upper connection ring portion to be integrally formed and having an inner space of a structure divided up and down; A bottom rubber coupling portion extending from the bottom of the bottom slat portion to be integrally formed, and for fitting and coupling the bottom rubber; Including,
A reinforcing material is embedded in the inner space of the unit slat on the shutter part to improve durability and to secure heat insulation, but the reinforcing material is a mixture obtained by stirring and mixing a base resin with a flame retardant resin in a weight ratio of 1: 0.5 to 1 After filling each of the inner spaces, foaming treatment or composition of a flame retardant resin in a weight ratio of 1: 0.5 to 1 in the base resin and stirring and mixing the mixture is extruded and filled therein,
The base resin is at least one selected from polystyrene, polyethylene, polypropylene, and polyurethane,
The flame-retardant resin is 30 to 50 parts by weight of volcanic stone powder for imparting flame retardancy to 100 parts by weight of any one main material selected from melamine resin, phenol resin, and urea resin, 10 to 30 parts by weight of zeolite to strengthen insulation, viscosity It consists of a composition comprising 1 to 5 parts by weight of methyl cellulose for controlling, and 10 to 30 parts by weight of sodium silicate for imparting curability and self-extinguishing property,
A coating layer is formed on the surface of each of the unit slats and guide rails by powder coating, and the coating layer is a curing agent for inducing energy savings through low temperature curing for 100 parts by weight of the base paint for imparting weather resistance and hardness. Consisting of a composition comprising ~100 parts by weight, 5 to 30 parts by weight of a Teflon-based resin for imparting fouling resistance, and 5 to 20 parts by weight of a polyalkyl silicate for imparting self-purification and fouling resistance,
The base paint is at least one or more selected from polyurea, polyester, and acrylic,
The curing agent is polyethylene polyamine or polyamideamine,
The Teflon-based resin is polytetrafluoroethylene (PTFE), fluorethylene propylene (FEP), tetrafluoroethylene perfluoroalkyl vinyl ether (PFA), polyvinyladenum fluoride (PVDF), homopolymer polyvinyladenum fluoride. Aluminum wind-resistant high-speed shutter, characterized in that at least one or more selected from. The method of claim 1,
The bearing-type windlock is fastened to the unit slats of the shutter unit by disposing them at regular intervals;
The unit slat in which the bearing type windlock is installed is formed through a pin insertion hole corresponding to the fastening hole of the slat insertion part, and the bearing type windlock is fixedly installed on the unit slat of the shutter unit by fastening with a fastening pin. Aluminum wind-resistant high-speed shutter made of. delete The method of claim 1,
The guide rail,
It is provided with a first guide rail disposed inside and a second guide rail disposed outside the first guide rail in a state that one side is fitted to the first guide rail and the other side is screwed, so as to have an inverted structure as a whole. It is a profile structure consisting of;
The first guide rail,
A bearing guide portion inserted and guided by the bearing portion of the bearing type windlock, and a brush that is positioned at the inner front end of the bearing guide portion to face each other in a pair of protrusions and spacing, and a brush is inserted and arranged Aluminum wind-resistant high-speed shutter, characterized in that the coupling portion is provided. delete delete

Images