WO2010126206A1

WO2010126206A1 - Screen fittings

Info

Publication number: WO2010126206A1
Application number: PCT/KR2009/004701
Authority: WO
Inventors: Woo-Dae Park
Original assignee: Dae Sang Window System Co., Ltd.
Priority date: 2009-04-30
Filing date: 2009-08-24
Publication date: 2010-11-04
Also published as: KR101090150B1; CN102421981A; KR20100119258A

Abstract

There are provided screen fittings such as an insect net or screen, including top, bottom, left, and right side frames. The bottom side frame has one end hinge-connected to the right side frame and the other end detachably connected to the left side frame. When a net is not used, the bottom side frame of the screen fittings is removed from a floor, thereby avoiding a hindrance to individuals passage and facilitating the easy removal of foreign objects such as dust from between the bottom side frame and the floor.

Description

SCREEN FITTINGS

The present invention relates to screen fittings such as an insect net or screen.

In general, an insect net or screen is installed at a window or a door in order to block insects or sunlight from coming inside.

Korean Laid-Open Publication No. 2008-0097561 relates to such an insect net, in which a moving bar and a winding bar are movable between both side frames, whereby when the moving bar moves, the winding bar also moves, so consequently, at this time, the insect net is wound and unwound about the winding bar.

However, this insect net according to the related art has the following problems.

Firstly, while the insect net is not necessarily used in winter, a bottom side frame of the insect net installed on a floor may cause individuals to trip over the bottom side frame when walking through the insect net or to have difficulties in removing foreign objects such as dust from between the bottom side frame and the floor.

Secondly, the insect net is wound when the winding bar rotates due to torsion elasticity caused by a spring installed in the winding bar. However, since there is no adjusting unit for adjusting the torsion elasticity, it is difficult to control the winding speed of the insect net according to a user's convenience.

An aspect of the present invention provides screen fittings having advantages in that while an insect net is not used, a bottom side frame of the screen fittings is removed from a floor, thereby avoiding a hindrance to individuals passage and facilitating the easy removal of foreign objects such as dust from between the bottom side frame and the floor.

An aspect of the present invention also provides screen fittings capable of easily adjusting the winding speed of a net according to a user's convenience.

According to an aspect of the present invention, there are provided screen fittings including a top side frame, a bottom side frame, a left side frame, and a right side frame. The bottom side frame has one end hinge-connected to the right side frame and the other end detachably connected to the left side frame.

One end of the bottom side frame may be hinge-connected to a right bottom corner member installed at the bottom of the right side frame.

The other end of the bottom side frame may have a guide member installed therein, and the left side frame may have a left bottom corner member installed at the bottom thereof. The guide member and the left bottom corner member may be engaged when the other end of the bottom side frame is connected to the left side frame.

The guide member may have its upper length longer than its lower length.

The screen fittings may further include a moving bar installed to move between the left side frame and the right side frame and a net having one end attached to the right side frame and the other end attached to the moving bar. The moving bar may be housed in a groove formed in the bottom side frame when the bottom side frame is rotated upward and positioned in a vertical direction.

The screen fittings may further include a moving bar installed to move between the left side frame and the right side frame, a central winding bar installed to move between the moving bar and the right side frame, and a net having one end attached to the right side frame, the other end attached to the moving bar, and a central part installed to be wound about the central winding bar. The central winding bar may forwardly rotate about its axis when the central winding bar moves toward the right side frame such that the net may be wound around the central winding bar. The central winding bar may reversely rotate about its axis when the central winding bar moves toward the left side frame such that the net may be unwound around the central winding bar. The central winding bar may have a spring installed therein, and torsion elasticity of the spring may cause the central winding bar to forwardly rotate.

The central winding bar may have a winding speed controller installed at the top thereof, and the spring may have one end attached to the winding speed controller and the other end attached to an inside of the central winding bar.

The winding speed controller may further include a spring support attached to one end of the spring, a worm wheel attached to a top of the spring support, and a worm perpendicularly engaged with the worm wheel. The torsion elasticity of the spring may be controlled by rotating the worm.

The worm may have an adjusting pin formed to be projected at one side thereof such that the worm may be rotated by the adjusting pin.

The winding speed controller may have a plurality of rollers such that the winding speed controller may move within a groove of the top side frame.

As set forth above, according to exemplary embodiments of the invention, the screen fittings provide advantages in that while the net is not used, a bottom side frame of the screen fittings is removed from a floor, thereby avoiding a hindrance to individuals passage and facilitating the easy removal of foreign objects such as dust from between the bottom side frame and the floor.

Also, the winding speed of the net can be easily adjusted according to a user's convenience.

FIG. 1 is a perspective view illustrating screen fittings according to an exemplary embodiment of the present invention;

FIGS. 2A through 2C are side views of screen fittings illustrating the operations of a bottom side frame according to an exemplary embodiment of the present invention; and

FIG. 3 is an exploded perspective view illustrating a winding speed controller and FIG. 4 is an assembled perspective view illustrating the winding speed controller.

Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating screen fittings 100 according to an exemplary embodiment of the present invention.

Referring to FIG. 1, the screen fittings 100 include a top side frame 120a, a bottom side frame 120b, a left side frame 120c, a right side frame 120d, and a net 140. The top, bottom, left, and

right side frames

120a, 120b, 120c, and 120d are combined together by the use of four

corner members

122a, 122b, 122c, and 122d.

The net 140 has one end attached to the right side frame 120d and the other end attached to a moving bar 160. The central part of the net 140 is installed to be wound about a central winding bar 180. The top and bottom sides of the moving bar 160 and the top and bottom sides of the central winding bar 180 are installed to move along grooves formed at the top and

bottom side frames

120a and 120b, respectively. Specifically, the top sides of the moving bar 160 and the central winding bar 180 have

rollers

162 and 182 installed therein, and the groove of the top side frame 120a has a roller supporting plate 124 installed therein. The

rollers

162 and 182 installed at the top sides of the moving bar 160 and the central winding bar 180 rotate while being supported by the roller supporting plate 124, whereby the top sides of the moving bar 160 and the central winding bar 180 are able to move along the groove of the top side frame 120a. Also, the bottom sides of the moving bar 160 and the central winding bar 180 are able to move along the groove of the bottom side frame 120b, being slightly spaced apart from the floor surface of the groove of the bottom side frame 120b.

When the moving bar 160 moves toward the right side frame 120d (opening direction), the central winding bar 180 also moves toward the right side frame 120d, and thus the net 140 is wound about the central winding bar 180. When the central winding bar 180 moves toward the right side frame 120d, the central winding bar 180 forwardly rotates about its axis, so the net 140 is able to be wound around the central winding bar 180. In contrast, when the moving bar 160 moves toward the left side frame 120c (closing direction), the central winding bar 180 also moves toward the left side frame 120c, and thus the net 140 wound about the central winding bar 180 is unwound. When the central winding bar 180 moves toward the left side frame 120c, the central winding bar 180 reversely rotates about its axis, so the net 140 wound around the central winding bar 180 is able to be unwound.

The central winding bar 180 is formed by having a hole therethrough, the hole having a spring 290 therein (see FIGS. 3 and 4). The spring 290 has torsion elasticity having the force of restitution in the forward-rotation direction. Therefore, when the moving bar 160 and the central winding bar 180 move toward the left side frame 120c, they require more force than the torsion elasticity of the spring 290 applied thereto. However, when the moving bar 160 and the central winding bar 180 move toward the right side frame 120d, they are able to move automatically due to the torsion elasticity of the spring 290.

FIGS. 2A through 2C are side views of the screen fittings 100 illustrating the operations of the bottom side frame 120b according to an exemplary embodiment of the present invention.

Referring to FIGS. 2A through 2C, one end of the bottom side frame 120b is hinge-connected to the right side frame 120d by a hinge shaft and the other end of the bottom side frame 120b is detachably connected to the left side frame 120c. For example, the bottom side frame 120b and the left side frame 120c may be detachably connected by the use of fixing clamps such as fixing pins or bolts.

One end of the bottom side frame 120b may be hinge-connected to a right bottom corner member 122d installed at the bottom of the right side frame 120d.

When the other end of the bottom side frame 120b, having a guide member 190 installed therein, is connected to the left side frame 120c, having a left bottom corner member 122b installed at the bottom thereof, the guide member 190 and the left bottom corner member 122b are engaged. The surface where the guide member 190 and the left bottom corner member 122b are engaged is required to have shapes which correspond with each other. The guide member 190 may be made of the same materials as the left bottom corner member 122b.

The guide member 190 needs to be formed to have its upper length L_T longer than its lower length L_B. This is because when the lower length L_B of the guide member 190 is longer than the upper length L_Tthereof, the other end of the bottom side frame 120b may not be raised upward and rotated.

As shown in FIGS. 2A through 2C, the bottom side frame 120b is able to rotate from a parallel position to a vertical position about the hinge shaft of one end of the bottom side frame 120b.

As shown in FIG. 2C, when the bottom side frame 120b is positioned in a vertical direction, individuals passing through the screen fittings 100 can walk without the hindrance of the bottom side frame 120b. Also, when the bottom side frame 120b is positioned in the vertical direction, the moving bar 160 is housed within the groove of the bottom side frame 120b. Therefore, even through the bottom side frame 120b is positioned in the vertical direction, the left and right widths of the screen fittings 100 are not narrowed by the bottom side frame 120b.

Like this, while the net 140 is used for blocking insects such as mosquitoes from coming from the outside in summer, it can be used by allowing the bottom side frame 120b to be positioned in the parallel direction. While the net 140 is not used in winter, the bottom side frame 120b is positioned in the vertical direction, whereby individuals passing through the screen fittings 100 can walk without the hindrance of the bottom side frame 120b, and thus user convenience can be improved.

A winding speed controller 200 controlling the winding speed of the central winding bar 180 will now be described below in detail.

FIG. 3 is an exploded perspective view illustrating the winding speed controller 200 and FIG. 4 is an assembled perspective view illustrating the winding speed controller 200.

Referring to FIGS. 3 and 4, the winding speed controller 200 includes an upper gear housing 220a, a lower gear housing 220b, a shaft cap 260, a spring support 280, a spring 290, and a spring holder 282.

The upper and

lower gear housings

220a and 220b are combined to form a gear housing, in which a worm wheel 240, a worm 242, and a roller shaft 184 are installed.

The worm wheel 240, having a worm wheel gear formed therearound, rotates by being perpendicularly engaged with the worm 242, having a worm gear formed therearound. The end of the worm 242 in a lengthwise direction has an adjusting pin 244 formed to be projected to the outside of the gear housing. The worm 242 may be rotated by turning the adjusting pin 244 from the outside. Referring to FIG. 1, when the screen fittings 100 are completely open, a through-hole 126 is formed in the top side frame 120a in order that the adjusting pin 244 is exposed. Therefore, when the screen fittings 100 are completely open, a user is able to turn the adjusting pin 244 through the through-hole 126 of the top side frame 120a.

The spring support 280 is connected to the worm wheel 240, and thus is able to rotate together with the worm wheel 240. The spring holder 282 is fixed to an appropriate position within the central winding bar 180. The spring 290 has one end attached to the spring support 280 and the other end attached to the spring holder 282.

The roller shaft 184 is installed at the front and rear of the gear housing. The roller shaft 184 has rollers 182 at both ends thereof. By these rollers 182, the winding speed controller 200 is able to move within the groove of the top side frame 120a.

Also, the winding speed controller 200 is installed at the top of the central winding bar 180, and thus moves together with the central winding bar 180.

Hereinafter, detailed descriptions of the operations of the winding speed controller 200 will be presented.

When the adjusting pin 244 is turned in one direction, the worm 242, integrally formed with the adjusting pin 244, rotates. When the worm 242 rotates, the worm wheel 240, perpendicularly engaged with the worm 242, rotates. When the worm wheel 240 rotates, the spring support 280 connected to the worm wheel 240 also rotates. When the spring support 280 rotates, one end of the spring 290, attached to the spring support 280, rotates, while the other end of the spring 290, attached to the spring holder 282, does not rotate. Therefore, the torsion elasticity of the spring 290 increases, and thus the winding speed increases.

Meanwhile, when the adjusting pin 244 is turned in the other direction, one end of the spring 290 rotates in an opposite direction in contrast to when the adjusting pin 244 is turned in one direction. Therefore, the torsion elasticity of the spring 290 decreases, and thus the winding speed decreases.

Like this, the winding speed of the central winding bar 180 increases or decreases by simply turning the adjusting pin 244 of the winding speed controller 200, thereby improving convenience in use.

Also, since the winding speed controller 200 has the rollers 182 installed therein, it is able to move within the groove of the top side frame 120a, and the central winding bar 180 is also able to move together with the winding speed controller 200.

While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the scope of the invention as defined by the appended claims.

Claims

Screen fittings, comprising:

a top side frame, a bottom side frame, a left side frame, and a right side frame,

wherein the bottom side frame has one end hinge-connected to the right side frame and the other end detachably connected to the left side frame.
The screen fittings of claim 1, wherein one end of the bottom side frame is hinge-connected to a right bottom corner member installed at the bottom of the right side frame.
The screen fittings of claim 1, wherein the other end of the bottom side frame has a guide member installed therein, and the left side frame has a left bottom corner member installed at the bottom thereof;

wherein the guide member and the left bottom corner member are engaged when the other end of the bottom side frame is connected to the left side frame.
The screen fittings of claim 3, the guide member has its upper length longer than its lower length.
The screen fittings of claim 1, further comprising:

a moving bar installed to move between the left side frame and the right side frame; and

a net having one end attached to the right side frame and the other end attached to the moving bar,

wherein the moving bar is housed in a groove formed in the bottom side frame when the bottom side frame is rotated upward and positioned in a vertical direction.
The screen fittings of claim 1, further comprising:

a moving bar installed to move between the left side frame and the right side frame;

a central winding bar installed to move between the moving bar and the right side frame; and

a net having one end attached to the right side frame, the other end attached to the moving bar, and a central part installed to be wound about the central winding bar,

wherein the central winding bar forwardly rotates about its axis when the central winding bar moves toward the right side frame such that the net is wound around the central winding bar,

wherein the central winding bar reversely rotates about its axis when the central winding bar moves toward the left side frame such that the net is unwound around the central winding bar,

wherein the central winding bar has a spring installed therein, and torsion elasticity of the spring causes the central winding bar to forwardly rotate.
The screen fittings of claim 6, wherein the central winding bar has a winding speed controller installed at the top thereof,

wherein the spring has one end attached to the winding speed controller and the other end attached to an inside of the central winding bar.
The screen fittings of claim 7, wherein the winding speed controller comprises:

a spring support attached to one end of the spring;

a worm wheel attached to a top of the spring support; and

a worm perpendicularly engaged with the worm wheel;

wherein the torsion elasticity of the spring is controlled by rotating the worm.
The screen fittings of claim 8, wherein the worm has an adjusting pin formed to be projected at one side thereof such that the worm is rotated by the adjusting pin.
The screen fittings of any one of claims 7 to 9, wherein the winding speed controller has a plurality of rollers such that the winding speed controller moves within a groove of the top side frame.