JPH0414639Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a locking edge material that is attached to the end of a net in an insect-proof screen door to prevent the net from coming off from the slits in the screen door frame. It is related to.

[Prior Art] A roll-up type insect-proof screen door in which the net can be opened and closed along the screen frame has been well known. Such insect-proof screen doors generally have locking edges at the ends of the net to prevent the ends of the net from easily coming off the slits in the screen frame due to the action of external forces such as wind pressure, creating gaps. This locking edge material is locked in the slit by attaching a material. This locking edge material has a locking function of preventing the net from coming off by locking into the slit, and a protective function of preventing the net from being damaged by coming off from the slit when an excessive external force is applied. It is desirable to have both. In other words, it is normally locked in the slit with a small force, so the sliding resistance when opening and closing the screen door is small, but if a relatively large external force such as wind pressure is applied to the net, it will respond to the external force. It firmly locks into the slit with the force applied and prevents the net from coming off. If an excessive external force is applied to the net, such as when a foreign object comes into contact with it, it will come off from the slit and prevent damage to the net. It is desirable that you are starting to gain the ability to do so.

On the other hand, Japanese Utility Model Application Publication No. 59-147896 discloses, as an example of such a locking edge material, one locking member that locks into a slit in a screen door frame on one side of one end of a tape-shaped base for connecting to a net. A device in which a locking piece is arranged in a rectangular shape in cross section, and a pair in which a pair of locking pieces are arranged in a row in an arrow-shaped cross section on both sides of one end of the base are disclosed.

However, the V-shaped cross section has only one locking piece, so the locking force to the slit is small, and it has the disadvantage that it easily comes off even if a relatively small external force such as wind pressure acts on the net. On the other hand, with arrow-shaped cross sections, the pair of locking pieces lock in the slit at the same time, so the locking force is large, but the sliding resistance is also large when opening and closing the net, making it difficult to open and close smoothly. Not only does it have the disadvantage of lacking a slit, but it also has the disadvantage that it is difficult to remove from the slit due to its large locking force, and in some cases, it can easily damage the net without being removed from the slit. ing.

[Problems to be Solved by the Invention] An object of the present invention is to provide a locking edge material that has both an appropriate locking function and a net protection function.

[Means for solving the problem] In order to solve the above problem, in the present invention,
A pair of tape-shaped elastic locking pieces of different widths are attached to the slits of the screen door frame on both sides of the tip of the tape-shaped base for connecting to the insect-proof net, with the free ends of each tape-shaped base on the proximal end side of the tape-shaped base. A locking edge member is provided which is arranged in a row in a state where it widens toward the front.

[Function] In the above-mentioned locking edge material, usually only the long width locking piece locks into the slit with a small force, so the sliding resistance when opening and closing the net is small, and a relatively large force is applied to the net. When the locking piece acts, the long width locking piece bends and the short width locking piece is newly locked in the slit.
The total locking force by both locking pieces becomes large. Also,
If excessive external force is applied to the net due to contact with a foreign object, both locking pieces will come off the slit and
Internet damage is prevented.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The locking edge material 1 shown in FIG. 1 consists of a pair of tape-shaped elastic locks of different widths that lock into the slits of the screen door frame on both sides of the tip of a tape-like base 2 for connecting to the net of the insect screen door. The pieces 3a and 3b are arranged in a row with their free ends facing toward the base end of the tape-like base body 2 in a state where they spread out, that is, their free ends are inclined in a direction that gradually separates them from the base body 2. are integrally formed from flexible synthetic resin.
The pair of locking pieces 3a, 3b have their free ends slightly curved in a direction in which they diverge from each other.

The locking edge material 1 is used by being attached to a net 13 of an insect-proof screen door, as shown in FIGS. 2 and 3. This insect-proof screen door is constructed by attaching a take-up box 11 containing a take-up shaft 12 whose drive source is elastic restoring force due to the torsion of a coil spring to a screen rod 10 that is fixed to a building opening such as a window. An insect-proof net 13 is wound around the shaft 12, and a frame 14 for opening and closing operation is attached to the tip of the net 13.
The base body 2 of the locking edge material 1 is connected to both left and right ends of the locking edge material 1, and a pair of locking pieces 3a, 3 on the locking edge material 1
b is engaged with the inside of a slit 15 vertically provided in the vertical frame member 10a of the screen door frame 10.

In the insect-proof screen door having the above configuration, the net 13 is opened and closed along the vertical frame member 10a by moving the frame 14 up and down. Since only the long and wide locking piece 3a locks with a small force, the sliding resistance when opening and closing the net 13 is small, and the opening and closing operations are performed smoothly.

When a relatively large external force due to wind pressure or the like acts on the net 13, and the long width locking piece 3a is bent and the locking force alone cannot support the external force, a new short width locking piece 3b is applied. By locking in the slit 15, the locking force of both locking pieces 3a and 3b is added, so their supporting force becomes sufficiently large, thereby reliably preventing the net 13 from coming off. be done.

When an excessive external force is applied to the net 13 due to contact with a foreign object, both locking pieces 3a and 3b are removed from the slit 15, and the net 13 is prevented from being damaged. At this time, since the locking force of the short width locking piece 3b is smaller than the locking force of the long width locking piece 3a, the overall locking force of this locking edge material 1 is Both of the locking pieces are smaller than the total locking force of the locking edge member having a long width, so that the locking edge member 1 can be reliably removed from the slit 15 in response to an external force.

[Effects of the invention] As described above, according to the invention, a pair of tape-shaped elastic locking pieces having different widths are attached to the slits of the screen door frame on both sides of the tip of the tape-shaped base, and the free ends thereof are respectively Since the tape-shaped base body is connected in a state where it widens towards the base end, it is possible to lock only the long width locking pieces to the screen door frame, or both long and short width locking pieces can lock the screen door frame. The locking force of the locking edge material can be adjusted in two stages depending on the case, and this allows the locking edge material to have excellent sliding properties in normal conditions and ability to prevent removal when external pressure is applied. can be obtained. Therefore, by locking only a long width locking piece to the slit with a small locking force, the net can be used with small sliding resistance that does not become an obstacle to opening and closing the net, and wind pressure is applied to the net. When a relatively large force is applied, such as by newly locking a short width locking piece to the slit, it is possible to prevent the net from coming off with the combined force of the locking force of both locking pieces. can. Further, when an excessive external force is applied to the net due to contact with a foreign object, both locking pieces come off from the slit, thereby reliably preventing damage to the net.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an embodiment of the locking edge material 1 of the present invention, Fig. 2 is a partially cutaway front view of an insect-proof screen door using the same, and Fig. 3 is an enlarged cross-section taken along line A-A. It is a diagram. 1... Locking edge material, 2... Base portion, 3a, 3b...
... Locking piece, 10 ... Screen door frame, 13 ... Net, 1
5...Slit.

Claims (1)

[Scope of utility model registration request] A pair of tape-shaped elastic locking pieces of different widths are attached to the slits of the screen door frame on both sides of the tip of the tape-shaped base for connecting to the insect-proof net, with the free ends of each tape-shaped base on the proximal end side of the tape-shaped base. A locking edge material for a screen door characterized by being installed in a row in a state where it spreads toward the front.