JPH0338398Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a corner joint for a screen door that connects a horizontal stile and a vertical stile of a screen door.

(Prior Art) Conventionally, in the corner joint 3 connecting the horizontal stile 1 and the vertical stile 2 of the screen door A as shown in FIG.
One known is made up of an L-shaped corner fitting 4 and a corner cover 5 as shown in the figure.
The corner fitting 4 has a U-shaped cross section,
An elastic cut-and-raised piece 6 is formed at the bottom of both sides, and when inserted into the horizontal stile 1 and the vertical stile 2, the horizontal stile 1
The cut and raised piece 6 is pressed against the inner surface of the vertical stile 2 to support the vertical and horizontal stile 1, 2, and the corner cover 5 is fitted with the corner metal fitting 4 to support it. two support plates 7 with different heights,
It is formed into a substantially rectangular shape consisting of inner and outer walls having a diameter of 8,
The corner fitting 4 is fitted in a predetermined position to cover the corner portion of the corner fitting 4 (see Japanese Utility Model Publication No. 52-3093). 9 is a screen for the screen door.

(Problems to be Solved by the Present Invention) However, in the above-mentioned conventional structure, since the pressing against the inner surfaces of both the vertical and horizontal frames 1 and 2 is through line contact of only the cut and raised pieces 6, the corner fittings 4 If the accuracy of the screen door A is not very high, there is a risk of the corner fitting 4 wobbling, and since the corner fitting 4 has a U-shape with one side open, if an overload is applied to the corner part of the screen door A, the corner fitting 4 may become loose. There is also a risk that it may be deformed.

(Means for Solving the Problems) Therefore, the present invention aims to solve the above-mentioned conventional problems, and to provide a corner joint for a screen door that has a small number of parts, is easy to assemble, and can be provided at low cost. This is the purpose.

Therefore, in the present invention, a screen door is constructed of an L-shaped corner fitting that connects the horizontal stile and vertical stile of the screen door, and a substantially rectangular corner cover into which the corner fitting is fitted and covers the corner. In the corner joint, in order to combine two L-shaped plate pieces formed in the same shape alternately facing each other, the corner fitting is attached to the side edge near the corner of one side of the plate pieces on the inside. A locking piece that is bent at right angles to the plate or a locking groove formed thereon, and a locking piece that protrudes from the leading edge of the locking piece formed on the other plate on the side edge near the corner of the other side. A locking piece is formed with a leading edge protruding from a locking groove in which the protrusion engages, or a locking protrusion that engages in a locking groove formed on the other plate piece, and the L-shape of the plate piece is formed. The intermediate portions of both sides of the plate are slightly bulged outward, and the tips of both pieces are folded inward in an arc shape, so that when the two plate pieces are combined, the tips abut each other and The intended purpose is achieved by configuring the corner fittings to apply spring force.

(Example) A is a corner joint that connects a horizontal stile 1 and a vertical stile 2 of a screen door, and is composed of a corner metal fitting 11 and a corner cover 12. Corner metal fittings 1
1 has both sides 13a, 13b and 13'a, 13'b
It consists of two L-shaped plate pieces 13, 13' formed to have the same length, and on the outer edge near the corner of one side 13a, 13'a of the plate pieces 13, 13', Locking pieces 14, 14' of the same shape bent inward at right angles
The locking pieces 14, 14' have engaging protrusions 14a, 14'a of the same shape protruding from their leading edges, and narrow locking grooves of the same shape are formed at the inner edges of the corners. 15,1
5' is formed. Further, on the outer edges near the corners of the other sides 13b, 13'b of the plate pieces 13, 13',
Locking grooves 16, 16' of the same width and width, which are engaged with the engagement protrusions 14'a, 14a, are formed on the inner edges near the corners. Locking pieces 17, 17' having the same shape and having engaging protrusions 17a, 17'a having the same shape projecting from their leading edges are bent inward at right angles. As a result, when the corner fitting 11 is constructed by combining the plate pieces 13, 13' facing each other alternately, the corner fitting 11 has a rectangular cylindrical shape near the corner. Reference numerals 18 and 18' are screw holes drilled in the locking pieces 14 and 14', and are used for the steady rest 19 and the door wheel 2.
This is for attaching 8.

Also, both sides 13a, 13 of the plate pieces 13, 13'
b, 13'a, 13'b are formed in a slightly arched shape so that the middle part bulges slightly outward, and the tips 20a, 20b, 20'a, 20'b are formed inwardly in an arcuate shape. When folded back and the plate pieces 13, 13' are combined to face each other alternately, the tips 20a and 2
0'b, 20b and 20'a are in contact with each other to apply a spring force to the corner fitting 11.

The corner cover 12 includes an inner wall 21 and an outer wall 22 having substantially rectangular shapes, a long support wall 23 interposed in the center between the both side walls, and a corner metal fitting 11 on the inside of the support wall 23. A short supporting wall 2 with a gap 24 that allows one side or the other side to be inserted.
5 is erected, the corner metal fitting 11 is positioned by the gap 24 and the upper edge 25a of the short support wall 25, and the corner part of the corner metal fitting 11 is covered by the corner cover 12. being done. Reference numeral 26 denotes a screw hole drilled in the elongated support wall 23 at a position overlapping with the locking pieces 14, 14'. In addition, corner cover 12 is horizontal stile 1.
The surface treatment is similar to that of the vertical stile 2, and care has been taken not to spoil the appearance after the screen door A is assembled.

To assemble a screen door with the above configuration, first, the plate pieces 13 and 13' are combined in an alternating manner to form the corner fitting 11, and one side of the corner fitting 11 is inserted into the gap 24 of the corner cover 12 to form the corner fitting. constitute a. After that, the horizontal stile 1 or the vertical stile 2 of the screen door is fitted on one side of the corner fitting 11, and the vertical stile 2 or the horizontal stile 1 is fitted on the other side to form the frame of the screen door. A screen 9 is stretched, and a steady rest 19 is attached to the upper corner and a door wheel 28 is attached to the lower corner with screws 27 to complete the screen door.

(Operations and Effects of the Present Invention) As described above, according to the present invention, the L-shaped corner fittings connecting the horizontal and vertical stile of the screen door are fitted, and the corner portions are covered. In a corner joint for a screen door consisting of a substantially rectangular corner cover, the corner fitting is formed by combining two L-shaped plate pieces formed in the same shape so as to alternately face each other. A locking piece or a locking groove bent inward at right angles is formed on the side edge near the corner of one side, and a locking piece formed on the other plate piece is formed on the side edge near the corner of the other side. A locking groove in which an engaging protrusion protrudes from the leading edge of the stopper piece engages, or a locking protrusion that protrudes from the leading edge to engage in a locking groove formed on the other plate piece. At the same time as forming a piece, the middle part of both sides of the L-shape of the plate piece is slightly bulged outward, and the tips of both sides are folded inward in an arc shape, and the two plate pieces are combined. Since the tip ends abut each other and apply a spring force to the corner fitting when the corner cover covers the corner cover, the corner fitting has a rectangular cylindrical cross-sectional shape in the vicinity of the corner. The strength against torsion when the screen door is framed can be increased, and deformation of the screen door can therefore be prevented. or,
Since the corner metal fittings have spring force, they can be easily inserted into the vertical and horizontal frames with appropriate elasticity, and are in surface contact with the inner surfaces of the vertical and horizontal frames. During assembly, the outer surface of the corner fitting acts as a guide surface, allowing it to be smoothly inserted into vertical and horizontal frames, and after assembly, it has a stable assembly structure, so it can be assembled securely without wobbling. can. Furthermore, since the corner fittings are made by assembling two plates of the same shape facing each other alternately, only one mold is required and the number of parts can be omitted, reducing the number of processing steps and making assembly easier. Since it is easy to attach, it has the effect of reducing costs.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a corner joint according to the present invention, Figure 2 is an enlarged exploded perspective view showing the relationship between the corner joint and vertical and horizontal frames, Figure 3 is a perspective view of a corner cover, is a partially enlarged side view showing the framework state, Figure 4 is a side view of a conventional screen door,
FIG. 5 is an enlarged exploded perspective view showing the relationship between a conventional corner joint and vertical and horizontal frames. 1 is the horizontal stile of the screen door, 2 is the vertical stile of the screen door, a is the corner joint, 11 is the corner metal fitting, 12 is the corner cover, 13, 13' are the plate pieces, 14, 14', 17,
17' is a locking piece, and 15, 15, 16, 16' are locking grooves.

Claims (1)

[Scope of claim for utility model registration] (1) An L-shaped corner fitting that connects the horizontal stile and vertical stile of a screen door, and a substantially rectangular corner cover into which the corner fitting is inserted and covers the corner. In the corner fitting for a screen door, in order to combine two L-shaped plate pieces formed in the same shape so as to alternately face each other, the corner fitting is attached to the corner fitting near the corner of one side of the plate pieces. Forming a locking piece or a locking groove that bends inward at right angles on the side edge,
On the side edge near the corner of the other side, there is a locking groove that is engaged with an engaging projection protruding from the leading edge of a locking piece formed on the other plate piece, or a locking groove formed on the other plate piece. forming a locking piece having an engaging protrusion protruding from its leading edge that engages with the locking groove, and at the same time, the intermediate portions of both sides of the L-shape of the plate piece are slightly bulged outward; The screen door is characterized in that the ends of both sides are folded back inward in an arc shape so that when the two plate pieces are combined, the ends come into contact with each other and apply a spring force to the corner fittings. corner fittings. (2) The corner joint for a screen door according to claim 1 of the utility model registration claim, characterized in that the corner metal fitting is used as a mounting member for a steady rest or a door wheel.