JPH0449351Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) The present invention relates to continuous bending joints, and more specifically, the invention relates to continuous bending joints, and more specifically, the invention relates to continuous bending joints, and more specifically, the joints of synthetic resin or metal plates, synthetic resin cardboard, plywood, hardboard, etc. The present invention relates to a joint that can be bently connected over its entire length.

(Prior Art) Conventionally, various structural parts, interior parts, and other parts have been constructed by bendably connecting synthetic resin plates and the like. Doors and blinds for garages, windows, etc.
Typical examples include screens, bath covers, accordion doors, blinds such as windows and cases facing the street, and shutters.

By the way, in such cases, conventionally,
The plates serving as structural members are connected so that they can be bent by hinges, or a thin part is formed between the plates by integral molding with the plates, and the flexible thin part is formed. Therefore, it was common for the plates to be connected so that they could be bent.

(Problem that the invention aims to solve) However, when connecting plates with hinges, the hinge only partially connects the ends of the plates at certain points, so there is a gap between the plates. This creates a gap, which causes problems such as rainwater, dirt, dust, etc. passing through parts such as the above-mentioned door, which are constructed by connecting these plate materials, and also causes the hinge to be exposed to the outside, causing damage to the parts. This caused inconveniences such as spoiling the appearance of the product.

On the other hand, in the latter case, that is, when a thin wall part is formed between the plate materials and the plates are connected by the thin wall part, when bending deformation in the thin wall part is repeated, the thin wall part It is easy for cracks to occur, or for cracks to grow and break, and in such cases, even if the thin-walled parts of the other planks are not damaged in any way, the There was a problem that caused the entire part to become unusable.

For this reason, the applicant of the present application first filed the U.S. Pat.
No. 160021 (refer to Utility Model Application Publication No. 60-68178) discloses a pair of synthetic resin mounting members that are attached to the respective ends of predetermined plate materials in order to connect them, and a pair of synthetic resin mounting members that are attached to the respective ends of the respective boards in the width direction. A longitudinal continuous bending joint that includes a longitudinal band-shaped connecting member with excellent bending resistance that is buried and integrally fixed, and that bendably connects the predetermined plate material to which the mounting member is attached. Proposed. According to such a continuous bending joint, it is possible to eliminate all of the above-mentioned problems that occur when plate materials are connected by hinges or thin-walled portions.

However, in such continuous bending joints, a band-shaped embedded part such as cloth or a resin sheet that is buried in the mounting member completely separates the synthetic resin parts of the mounting member located on both sides thereof is used as the connecting member. In this case, it is not always possible to obtain a sufficiently large adhesion force between the connecting member and the synthetic resin part that narrows it, and therefore, a large force may be applied between the connecting member and the mounting member in the direction of peeling them apart. When this occurs, there is a risk that the adhering portion may peel off relatively easily.

(Means for solving the problem) The present invention was made to solve the problem, and its gist is that in the above-mentioned continuous bending joint, the connecting member is made of cloth. At the same time, the weave of the cloth can be improved by roughening the weave of the cloth or by piercing the cloth with a predetermined needle-like member in the band-shaped buried part of the cloth buried in the mounting member. The eyes are expanded to form a through hole through which the synthetic resin constituting the mounting member can enter, and the synthetic resin parts located on both sides of the strip-shaped buried part are penetrated through the synthetic resin that has entered the through hole. The reason is that they are connected together.

(Effect of the invention) In such a continuous bending joint, the synthetic resin part located on both sides of the buried part is Since these are integrally connected, the connecting member is firmly fixed to the mounting member in its band-shaped buried portion by the fusion force of the synthetic resin that constitutes the mounting member. Therefore, even if a large force acts between the connecting member and the mounting member in a direction that causes them to separate, the close contact portion between them will not easily separate.

Further, according to the present invention, since the connecting member is firmly fixed to the mounting member in the band-shaped buried portion, there is an advantage that the force for preventing the band-shaped buried portion from coming off from the mounting member is significantly increased.

(Examples) Hereinafter, in order to clarify the present invention more specifically, examples thereof will be described in detail based on the drawings.

FIG. 1 shows an example of a continuous bending joint that connects the plates 10, 10 so that they can be parallel to each other. Joint 14 shown in the figure
is a pair of elongated attachment members 16, 16 formed by extrusion molding, and includes a pair of elongated attachment members 16, 16 that extend continuously along the connecting portion of each plate material 10, 10, and the attachment members 16, 16 are attached to the attachment members 16, 16. It is comprised of a longitudinal band-shaped canvas 20 as a connecting member that is continuously connected in the longitudinal direction. When the pair of attachment members 16, 16 are extruded, the canvas 20 is
16 is continuously fed in the extrusion direction, and its widthwise both sides are embedded and fixed between the synthetic resin forming the mounting members 16, 16 at the same time as the mounting members 16, 16 are molded. , This allows the joint 14 to be integrally molded. The synthetic resin material of the mounting members 16, 16 is polyvinyl chloride, polypropylene, etc., and the canvas 20 is made of a material with excellent bending resistance made of woven fibers such as vinylon (registered trademark). things are adopted.

The mounting member 16 has clamping portions 2 facing each other.
2 and 24 are connected at a bottom 26, and have a U-shaped cross-sectional shape, into which the end of the plate 10 is fitted. Mounting member 1
6, one of the clamping parts 22 is disposed approximately at right angles to the bottom part 26, and has a width wider than the other clamping part 24, with the tip thereof protruding beyond the other clamping part 24. . A guide surface 28 is formed inside the protruding end, and the plate material 10
can be easily fitted into the mounting member 16 along this guide surface 28.

The other clamping part 24 is arranged to be inclined with respect to the clamping part 22 so that it approaches the one clamping part 22 as it moves away from the bottom part 26, and the tip of the other clamping part 24 approaches the one clamping part 22 as it moves away from the bottom part 26. Distance is 10 plates
The plate material 10 fitted into the mounting member 16 is held by the pair of clamping parts 2.
2 and 24 so that it can be held elastically.

On the other hand, the canvas 20 is embedded and fixed in parallel to the clamping parts 22, 22 of the mounting members 10, 10, respectively, at both sides in the width direction, as shown in FIGS. 1 and 2. As shown in FIG.
It is arranged so that it can be positioned on the same plane as the holding parts 22, 22 of 6, 16. In other words, the pair of mounting members 16, 16 are connected via the canvas 20 in a bendable state at the exposed portion 30 of the canvas 20 located between them. Plate material 1 to be fitted
0 and 10 are connected so as to be bendable between a position where they are parallel to each other and a position where they overlap.

In such a joint 14, as shown in FIGS. 1 and 2, the weave of the canvas 20 covers the exposed portion of the band-shaped buried portion 32 located on both sides of the exposed portion 30. The portion of a predetermined width adjacent to the portion 30 and the exposed portion 30 are made dense to effectively prevent the passage of rainwater, dust, etc., and to sufficiently withstand repeated bending operations. , the weave is uniformly coarsened in the portions of both buried portions 32 located outside the densely woven portion, and as shown in FIGS. 1 and 3, such a coarse weave is formed. 34
The synthetic resin constituting the mounting member 16 is allowed to enter the fibers 36 constituting the canvas 20, and the fibers 36 constituting the canvas 20 are surrounded and fixed by the integrally molded synthetic resin. In other words, the synthetic resin that has entered the weave 34 of the buried portion 32 connects the synthetic resin portions located on both sides of the buried portion 32 together. Note that, as is clear from this, in this embodiment, such buried portion 3
The roughened texture 34 of No. 2 is used as a through hole.

According to such a joint 14, the buried portion 32 of the canvas 20 is gripped and fixed by the fusion force of the synthetic resin constituting the mounting member 16, so even if the buried portion 32 of the canvas 20 is held between the canvas 20 and the mounting member 16, Even if a large force is applied in the direction of peeling, the adhesion between them will not easily peel off, and the force that prevents them from being pulled out will also increase. Therefore, the canvas 20 and each mounting member 1
6 was fixed extremely firmly, and its durability was significantly improved, allowing it to withstand even harsher usage conditions. Incidentally, FIG. 4 shows an example in which an accordion-type door is constructed by connecting a large number of plates 10 using the above-mentioned joint 14. According to such an accordion-type door, There are various benefits associated with the adoption of continuous bending joints, such as improved appearance, prevention of dirt and dust, replacement of only damaged parts, improvement of overall service life through repair, and simplification of assembly and disassembly. Not only can the mechanical strength of the joint 14 be increased to improve its durability, but the buried portion of the connecting member completely separates the synthetic resin that constitutes the mounting member 16 on both sides. Compared to the case where the joint 14 is buried in a state where the joint 14 is buried, the joint 14 can be handled more roughly, and the frequency of repair and replacement of the joint 14 can be reduced.

In addition, in the above-mentioned embodiment, the texture 34 that allows the penetration of synthetic resin in the buried portion 32 of the canvas 20 is
Although the size of the weave was set to be uniform, the same effect can be obtained by making the weave gradually coarser in the buried portion 32 toward the ends in the width direction of the canvas 20. .

Next, another embodiment of the present invention is shown in FIGS. 5 and 6.
As shown in the figure.

That is, the joint 40 of this embodiment is similar to the previous embodiment in that the mounting members 16, 16 are connected by the canvas 20 at their clamping parts 22, 22, respectively, but the canvas 20 is different from the conventional normal one. Similar to canvas, the weave is dense throughout, and in the buried portion 32 of the canvas 20, part of the weave is forcibly expanded, and both sides of the buried portion 32 are This embodiment differs from the previous embodiment in that the synthetic resin located in the opening is integrally connected by the synthetic resin that has penetrated into the expanded weave 42. In other words, in the joint 40 of this embodiment, the forcibly expanded weave 42 serves as a through hole.

In this type of joint 40, as well as the joint 14 of the above embodiment, the mechanical strength is increased and the durability is improved compared to the case where the synthetic resin is completely separated on both sides by the connecting member. Therefore, when used as a connecting member for the plate material 10 in an accordion-type door or the like, it is possible to obtain the same effect as when the joint 14 of the above embodiment is used.

Note that the weave 42 is expanded by piercing the canvas 20 with a predetermined needle-like member such as an awl.

Although several embodiments of the present invention have been described above, these are literal illustrations, and the present invention includes:
It should not be interpreted as being limited to these specific examples.

Further, in the embodiment, the mounting member 16 having a U-shaped cross section is employed as the mounting member.
The present invention has been applied to continuous bending joints in which the plates 10 can be arranged approximately parallel to each other;
It is also possible to apply the invention to other types of continuous folding joints.

Although not listed in detail, it goes without saying that the present invention can be implemented with various modifications and improvements without departing from the spirit thereof.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a continuous bending joint that is an embodiment of the present invention, and FIG. 2 is a cross-sectional explanatory view for explaining the state of the canvas weave in the joint shown in FIG. , FIG. 3 is an enlarged cross-sectional explanatory view for explaining the state of the canvas weave in the joint shown in FIG. 1. FIG. 4 is a plan view of a main part showing a part of the accordion door assembled using the joint shown in FIG. 1. FIG. 5 is a diagram corresponding to FIG. 1 showing another embodiment of the present invention, and FIG. 6 is a diagram corresponding to FIG. 2 of the embodiment shown in FIG. 5. 10... Plate material, 14, 40... Joint, 16...
Mounting member, 20... Canvas (connecting member), 22, 2
4... Holding part, 30... Exposed part, 32... Buried part, 34... Texture (through hole), 42... Texture (through hole).

Claims (1)

[Claims for Utility Model Registration] (1) A pair of synthetic resin mounting members that are respectively attached to the ends of predetermined plate materials to connect them, and a pair of synthetic resin mounting members whose widthwise ends are respectively embedded in the mounting members and integrated. A longitudinal continuous bending joint that is provided with a longitudinal band-shaped connecting member that is fixed to the outside and has excellent bending resistance, and that bendably connects the predetermined plate material to which the mounting member is attached, the connecting member is made of cloth, and by roughening the weave of the cloth or by piercing the cloth with a predetermined needle-like member in the band-shaped buried portion of the cloth to be buried in the mounting member. The weave of the cloth is expanded to form a through hole through which the synthetic resin constituting the mounting member can enter, and the synthetic resin located on both sides of the strip-shaped buried portion is inserted through the synthetic resin that has entered the through hole. A continuous bending joint characterized by integrally connecting resin parts. (2) The mounting member has a U-shaped cross section into which the end of the predetermined plate material is fitted, and the distance between opposing plate-shaped clamping portions of the U-shape is at least as large as 2. The continuous bending joint according to claim 1, wherein the continuous bending joint is made narrower in part than the thickness of the plate material so that the plate material is elastically clamped by the clamping parts.