JPS5832556Y2 - Telescopic frame for accordion door - Google Patents

Description

[Detailed description of the invention] The present invention relates to a structure for preventing springback of the telescopic frame of an accordion door. 1 notch 2 is provided, and a second notch 4 is provided in the center of the thin rectangular second hinge piece 3, with only the upper half cut out in a U-shape, and the first notch 2 and the second notch 4 are The center of the first hinge piece 1 and the center of the second hinge piece 3 are fitted together to form an X-shaped hinge A. The ends of the first hinge piece 1 and the second hinge piece 3 are pivotally connected to each other, and both sides of the second notch 4 of the second hinge piece 3 are connected to the engaged parts 5.
and an L-shaped retaining part 6 is provided at the upper part of the first notch part 4 of the first hinge piece 3 to engage with the secured part 5 of the adjacent hinge A,
This relates to a telescoping frame for an accordion door, characterized in that a protrusion 7 is provided that protrudes inwardly and faces the first hinge piece 1 and the second hinge piece 3 of the hinge A.

The purpose of this invention is to eliminate the risk of the locking part and the locked part locking together and returning due to springback when folded.
When folded, the first and second hinge pieces of each X-shaped hinge
To provide an extensible frame for an accordion door in which a locking part and a locked part are smoothly locked by collapsing parts of hinge pieces abutting against each other.

The present invention will be explained in detail below using examples.

1 is a thin rectangular first hinge piece made of synthetic resin,
As shown in Figs. 3a, 1) and 3c, a first notch 2 is provided in the center with only the lower half cut out, and a shaft hole 8 is bored in the middle of the first hinge piece 1.

At both left and right ends of the first hinge piece 1, bulges 7 of about 1 mm by 1 mm are provided, and the left and right bulges 7 protrude in opposite directions.

Fitting portions 15 having C-shaped portions at both ends of the first hinge piece 1
, and above both sides of the first notch 2 of the first hinge piece 1, retaining portions 6 having an L-shaped cross section are provided to protrude in opposite directions.

The tip 6a of the engaging portion 6 has a sloped surface that reduces the protrusion length of the lower plug by about 0.5 to 0.8 mm.

As shown in FIG. 4, a small retaining protrusion 16 is provided on the inner surface of the distal end of the retaining portion 6. As shown in FIG.

3 is a second hinge piece made of resin and has an elongated rectangular shape; Fig. 5 a, l).

As shown in C, a second notch 4 is provided in the center of the second hinge piece 3, with only the upper half cut out in a U-shape. a shaft portion 11 having a portion 10;
are provided protrudingly, and engaged portions 5 are provided on both sides of the second notch portion 4.
This is provided.

This engaged portion 5 is formed by providing one or more (three in this embodiment) protrusions 5b on a guide side surface 5a on one side, and providing a retaining step portion 5C on the other side.

The engaging step portion 5C may be provided with a mating protrusion 17 that can engage with the small mating protrusion 16, as shown in FIG. 6a.

Two C-shaped parts are provided on both sides of the second hinge piece 3, and fitting parts 12 are provided on both sides of the second hinge piece 3, and the same as the first hinge piece 1 are provided in front of both left and right ends of the second hinge piece 3. A bulge portion 7 protruding by about 2 mm is provided on each side, and the left and right bulge portions 7 protrude in opposite directions.

The first hinge piece 1 and the second hinge piece 3 configured in this way are the same. By fitting the second notches 2 and 4 together, inserting the shaft portion 11 into the shaft hole 8, and pivoting the first hinge piece 1 and the second hinge piece 3, a hinge is formed as shown in FIG. A is formed.

The hinge A configured in this way has a fitting part 15 and a fitted part 12.
A plurality of hinges A are connected by fitting together, and the upper and lower hinges A are connected with a steel wire 14 to form a telescopic framework for an accordion door.

An accordion door B is assembled by attaching a leather-like outer skin 13 to the front and back of this accordion telescopic frame.

However, when the accordion door B is in the state shown in Fig. 8a, the hinge A is in the state shown in Fig. 9a, and the accordion door B is in the state shown in Fig. 9a.
When folded as shown in Fig. 8, the first hinge piece 1 and the second hinge piece 3 of the hinge A overlap as shown in Fig. 9, and the engaging part 6 of the adjacent hinge A overlaps. The engaging portion 5 engages as shown in FIG. 7 and does not return due to springback as shown by the imaginary line in FIG. 8.

When the engaging portion 6 and the engaged portion 5 engage, the opposing collapsing portions 7 of the first hinge piece 1 and the second hinge piece 3 of each hinge A butt against each other, and the synthetic resin first 1 hinge piece 1 and 2nd hinge piece 3
The engaging portion 6 and the secured portion 5 engage smoothly without bending.

The first and second hinge pieces 1 are reinforced by the collapsed part 7,
3 becomes difficult to bend, and in each hinge A, the gap between the first hinge piece 1 and the second hinge piece 3 is kept constant by abutting the collapsed parts 7, and each part 1 and the second hinge piece 3 are kept constant. When the pieces 1 and 3 cannot be bent and the collapsing portions 7 are abutted against each other, the engaged portions 5 and the engaging portions 6 are simultaneously engaged in each portion, and the engagement is smoothly performed.

At this time, since the guide side surface 5a of the engaged part 5 has the protrusion 5b, the guide side surface 5a and the engaging part 6 partially contact each other, so that there are few parts to be worn, and the engagement of the engaged part 5 is easy. The sound when the engaging part 6 engages with the stepped part 5C is small, and the engagement is easy.

Further, since the guiding side surface 5a is tapered, the retaining portion 6 gradually engages, so that there is no problem in using the accordion door B.

Further, if the engaging portion 6 is provided with the small engaging projection 16 and the engaged portion 5 is provided with the engaged small projection 17 that engages with the engaging small projection 16, the engagement will be more secure.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of the accordion door of the present invention;
Fig. 2 is a perspective view of the same hinge as above, Fig. 3 a is a plan view of the first hinge piece as above, Fig. 3 is a front view of Fig. 3 a, and Fig. 3 C is a view of Fig. 3 a. 4 is an enlarged sectional view of the engaging portion of the same as above; FIG. 5 a is a plan view of the second hinge piece of the same as above; FIG. 5 is a front view of FIG. , Figure 5C is the fifth
Figure 6a is an enlarged partially cutaway plan sectional view of Figure a, Figure 6a is an enlarged perspective view of the secured part seen from the back side, Figure 6 is a front view of Figure 6a, Figure 6C is the 6a is a plan sectional view, and FIG. 6d is a 6th sectional view.
FIG. 7 is a plan view of the above embodiment in a state where the locking part and the locked part are engaged, and FIGS. A front view showing the operation, and FIGS. 9a and 9b are explanatory diagrams of the operation of the same hinge, in which 1 is the first hinge piece, 2 is the first cut arrow part, 3 is the second hinge piece, and 4 is the second hinge piece. 2
5 is an engaged portion, 6 is an engaging portion, and 7 is a collapsed portion.

Claims (1)

[Scope of utility model registration request] A first notch is provided in the center of the thin rectangular first hinge piece in a U-shape in the lower half, and a U-shaped cut in the upper half is provided in the center of the second thin rectangular hinge piece. A second cut arrow part is provided, and the first cut arrow part and the second cut arrow part are fitted into each other, and the center of the first hinge piece and the center of the second hinge piece are pivoted to form an X-shaped hinge. A plurality of these hinges are arranged and the ends of the first and second hinge pieces of adjacent hinges are pivotally connected to each other, and both sides of the second cut arrow part of the second hinge piece are connected to the engaged parts. An L-shaped retaining part that engages with the secured part of the adjacent hinge is provided on the upper part of the first cut arrow part of the first hinge element, and the first hinge element and the second hinge element are connected to each other. A telescoping frame for an accordion door, characterized in that the frame is provided with a protruding part that protrudes inwardly and faces the bottom of the frame.