JPH0336715Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a roll-up screen device that is applied to insect-proof screen doors, heat insulation shielding devices for windows, refrigerated cases, and the like.

[Prior Art] For example, in what has been conventionally known as an insect-proof screen door, which is a type of wind-up screen device, a net is wound around a wind-up shaft whose driving source is elastic restoring force caused by the torsion of a coil spring. At the same time, insert the side end of the net into the hollow guide rail through the slit, and attach a locking member to the side end to prevent the net from coming off, which locks on the inner edge of the slit, and insert the net into the guide rail. (Jikkoaki)
48-24363).

In such a conventional insect screen door, as shown in FIG. 5, the locking member 1 is connected to the net 2 at one end in the width direction, so that when an external force such as wind pressure is applied to the net 2, the locking member 1 is connected to the net 2 at one end in the width direction. , the connecting portion side is pulled in the direction of the slit 4 by the net 2, and after being bent greatly, it is easy to reverse and pull out from the slit 4, which is a drawback.

The locking force can be increased by making the width b of the locking member 1 sufficiently larger than the inner width a of the guide rail 3;
Since the depth c of the screen increases, the width of the screen door becomes narrower, which is undesirable.

[Problems to be solved by the invention] The problem of the invention is to increase the locking force of the locking member to the guide rail with a simple configuration without increasing the width of the locking member or using a special locking mechanism. An object of the present invention is to provide a roll-up screen device.

[Means for solving the problems] In order to solve the above problems, in the present invention,
The locking member is a flat tape-shaped locking piece that has a width smaller than the inner width of the guide rail and has a rigidity that does not easily bend due to forces such as wind pressure acting on the screen, and the locking piece. It is integrally formed of synthetic resin with a flexible connecting piece that branches from the middle part of the piece and is formed thinner than the locking piece, and the connecting piece is connected to the end of the screen, It is characterized in that the locking pieces are engaged with the locking walls on both sides of the slit in the guide rail in a direction perpendicular to the screen.

[Function] The locking member connected to the side edge of the screen is
The locking pieces face perpendicular to the screen and engage the locking walls on both sides of the slit, and in this state slide within the guide rails to open and close the screen.

In this state, even if an external force such as wind pressure acts on the screen and the middle part of the locking piece is pulled in the direction of the slit, the locking piece will easily bend due to the force such as wind pressure acting on the screen. Since the slit has a narrow width, it will not bend in two in the middle and slip out of the slit, and therefore the above-mentioned locking against normal wind pressure etc. will not occur. The supporting capacity of the pieces is very large.

In addition, the locking piece is formed to have a width smaller than the inner width of the guide rail, and is engaged with the locking wall in a direction perpendicular to the screen, so that the locking piece extends in the depth direction of the guide rail. There is no need to increase the depth of the guide rail as in the case where the guide rail is engaged with the screen door, and therefore, the frontage of the screen door is not narrowed by this.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

What is shown in FIG. 1 is an insect-proof screen door that is an example of the wind-up type screen device of the present invention. A net 11 as a screen is wound around the net, the side end of the net 11 is inserted into the hollow guide rail 12 through the slit 13, and a locking member 14 is attached to the side end to prevent the net from coming off. A horizontal beam 15 is attached to the tip of the net 11 so that the net 11 can be opened and closed along the guide rail 12.

As specifically shown in FIG. 2, the locking member 14 is such that the inner width of the guide rail 12 is no smaller than a, and is not easily bent by wind pressure or other forces acting on the net 11. It consists of a planar tape-shaped locking piece 14a having a rigidity of The locking piece 14a and the connecting piece 14b,
As shown in FIG. 3, the locking piece 1 is attached to the connecting piece 14b.
The connecting piece 14b is connected to the net 11, and the locking piece 14a is connected to the two locking members 14, 14 located at both ends of the net 11. Branch portions 14c, 14 between the locking piece 14a and the connecting piece 14b in
By approximating the distance between the inner surfaces of the locking walls 12a, 12a in the left and right guide rails 12, 12, the locking walls on both sides of the slit 13 are aligned in the direction orthogonal to the net 11. 12
a, 12a. At this time, if protrusions in the sliding direction are formed on the locking walls 12a, 12a, the sliding resistance of the locking pieces 14a can be reduced.

Thus, when the locking pieces 14a engage with the locking walls 12a, tension is applied to the net 11 in its width direction, thereby preventing unnecessary deflection.

Further, by integrally molding the locking member 14 in the above-described manner to give the locking piece 14a an inclination, not only the winding of the net 11 becomes smooth, but also the gap between the branch portions 14c and 14c Even if a slight error occurs between the distance and the distance between the locking walls 12a, 12a, it can be elastically absorbed, which is very convenient.

The inclination angle θ of the locking piece 14a can be arbitrarily set to be large or small, and if it is very small, as shown in FIG. By turning the net 11 outward, the tip of the net 11 can be inserted into the guide rail 12 from the upper end opening of the guide rail 12 when installing the screen door or when the locking member 14 comes off the guide rail 12. When introducing the locking piece 14a into the locking wall 12, the locking piece 14a is easily and automatically inserted into the locking wall 12.
a can be engaged in a predetermined state.

Note that the locking member 14 has a locking piece 14a that locks the net 11 when the net 11 is wound onto the winding shaft 10.
Although it is attached so that it is rolled up inside, it can also be attached so that it is wrapped inside.

In addition, slits 1 are provided at both ends of the horizontal bar 15.
A guide 16 that fits into the guide rail 12 through 3 is attached, and a runner 17 provided on the guide 16.
A protrusion is formed on the guide rail 12, and this protrusion is attached to the guide rail 12.
The net 11 is held in the closed position by engaging the opening 18 in the lower end of the net 11.

The insect-proof screen door having the above configuration is opened and closed in the same manner as a conventional insect-proof screen door by moving the horizontal bars 15 along the guide rails 12. At this time, the intermediate portion of the locking piece 14a of the locking member 14 attached to the side end of the net 11 is pulled in the direction of the slit 13 by the connecting piece 14b.
It faces in a direction perpendicular to the slit 13 and engages with the edge of the slit 13, that is, with the locking walls 12a, 12a on both sides of the slit. Here, the locking piece 14a is made to maintain rigidity to the extent that it does not easily bend due to forces such as wind pressure acting on the net 11, and since the width of the slit 13 is narrow, the locking piece 14a is very rigid at the intermediate position. Therefore, its supporting capacity against normal wind pressure is extremely large.

If an abnormally large force is applied perpendicularly to the net 11 due to contact with a foreign object, the locking piece 14a is bent in two by the applied force before the net 11 is damaged, and the slit is Since the net 11 is removed from the net 13, damage to the net 11 is prevented.

It goes without saying that the above-described configuration of the present invention can be applied not only to insect-proof screen doors but also to heat-insulating shielding devices such as windows and refrigerated cases.

[Effects of the invention] As described above, according to the insect-proof screen door according to the present invention,
The locking piece of the locking member is formed into a flat tape shape that has a width smaller than the inner width of the guide rail and has a rigidity that does not easily bend due to wind pressure or other forces that act cleanly. is connected to the net via a connecting piece, and is engaged with the locking walls on both sides of the slit in the guide rail in a direction perpendicular to the screen, making it difficult for the locking piece to come off due to bending. , its supporting capacity against normal wind pressure etc. can be greatly increased.

Furthermore, since the locking piece and the connecting piece are made to maintain a predetermined rigidity and flexibility by changing their wall thickness, the locking member can be integrally molded from synthetic resin. It is much easier to manufacture than when dissimilar members are joined together.

Furthermore, the locking piece is formed to have a width smaller than the inner width of the guide rail, and is engaged within the guide rail in a direction perpendicular to the net, so that the locking piece can be moved in the depth direction of the guide rail. There is no need to increase the depth of the guide rail as in the conventional guide rail, which allows the opening of the screen door to be used widely.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of the insect-proof screen door of the present invention.
Fig. 2 is an enlarged sectional view of the main part thereof, Fig. 3 is a sectional view showing an example of the structure of the locking member in the present invention, and Fig. 4 is an enlarged partial front view showing an example of the structure of the locking member at the tip of the net. , FIG. 5 is a sectional view of a main part of a conventional example. 10... Winding shaft, 11... Screen, 12...
... Guide rail, 12a ... Locking wall, 13 ... Slit, 14 ... Locking member, 14a ... Locking piece,
14b...Connecting piece.

Claims (1)

[Scope of utility model registration request] Insert the side end of the screen wound around the take-up shaft into the hollow guide rail through the slit, attach a locking member to the side end of the screen to prevent it from coming off, and insert the screen along the guide rail. In the case where the locking member is made of a flat tape having a width smaller than the inner width of the guide rail and having a rigidity that does not easily bend due to forces such as wind pressure acting on the screen. A locking piece, and a flexible connecting piece branched from the middle part of the locking piece and formed thinner than the locking piece are integrally formed of synthetic resin, and the connecting piece is 1. A roll-up screen device, which is connected to an end of the screen, and has locking pieces that are engaged with locking walls on both sides of a slit in a guide rail in a direction perpendicular to the screen.