JPH0570480B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tensioning tool used for tensioning a tensioning fabric such as the skin of an automobile seat, and a tensioning fabric using this tensioning tool. This relates to the method of installing the .

(Prior Art) In order to stretch upholstery fabrics such as the skins of automobile seats, the present applicant proposed in the previous Japanese Patent Application No. 145428/1986 that the work could be done safely without using hog rings with sharp ends. , has proposed a new technique that can stretch the stretched fabric without causing wrinkles in the stretching direction.

As shown in FIG. 4, this prior art is a tensioning tool consisting of a pair of plate-like substrates d and e that can be fixed to both sides b and c of a tensioning fabric a to be connected to each other, respectively. Both plate-like substrates d, e,
A shaft part f and a hook part g are provided which are capable of connecting the two plate-like substrates d and e to each other and are relatively rotatable in a direction in which both the plate-like substrates d and e are overlapped with each other in the connected state, and one of the plate-like substrates d and e is provided. A latching protrusion h for restraining these plate-like substrates d and e in an overlapping state.
is constructed by providing a slit i in each of the other of the plate-shaped substrates d and e for engaging and fixing the locking protrusion h.

(Problem to be Solved by the Invention) However, in the above-mentioned prior art, as shown in FIG. Since it is necessary to partially provide an opening j for hooking onto the portion f, and the hook portion g must be partially provided in correspondence with the opening j, these plate-like substrates are The cross-sectional shape in the direction differs depending on the part, and these plate-like substrates cannot be manufactured only by extrusion molding, and post-processing is required, resulting in high manufacturing costs.

Furthermore, when tensioning the tension fabric using the above-mentioned tension tool, the hook g must be hooked to the shaft f at the opening j, as shown by the imaginary line in FIG. Another drawback is that it is difficult to connect the shaped substrates.

In view of the above-mentioned drawbacks, the present invention provides a tension tool that can easily connect both plate-like substrates with a tensioning tool that can be obtained by extrusion molding both plate-like substrates, each of which has the same cross section in the longitudinal direction. The purpose of the present invention is to provide a method for stretching a stretched cloth.

(Means for Solving the Problems) The tensioning tool of the present invention includes a small hook portion having the same cross section in the longitudinal direction at the tip of the first plate-like substrate, and
A large hook portion having the same cross section in the longitudinal direction is connectable to the small hook portion and guides and accommodates the small hook portion toward the inner surface when the two plate-like substrates are rotated relative to each other in the direction of overlapping each other in the connected state. The second plate-like substrate is provided at the tip end thereof, and the second plate-like substrate is engaged with a second locking portion having the same cross section in the longitudinal direction and provided on the rear side of the first plate-like substrate and on the front side of the second plate-like substrate. The present invention is characterized in that a first locking portion having the same cross section in the longitudinal direction is provided which locks both plate-like substrates in a superposed state.

A tensioning method using the above-mentioned tensioning tool of the present invention involves fixing the first and second plate-like substrates to both sides of the tensioning cloth that covers the sheet main body, respectively, to be connected to each other. After the plate-like substrates are connected by engaging the small hook portion and the large hook portion, relative rotation is performed in a direction in which the back side portion of the first plate-like substrate and the front side portion of the second plate-like substrate are overlapped. moving to draw the both sides together;
The first locking portion and the second locking portion are engaged with each other to restrain both plate-like substrates in a superposed state, and the tension cloth is stretched.

(Function) According to the tensioning tool of the present invention, the small hook portion of the first plate-shaped substrate and the first locking portion have the same cross section in the longitudinal direction, and the small hook portion of the first plate-shaped substrate has the same cross section in the longitudinal direction. Since the portion and the second locking portion have the same cross section in the longitudinal direction, these plate-like substrates can be obtained by extrusion molding at a low manufacturing cost.

Furthermore, according to the tensioning method of the stretched fabric of the present invention, both the small hook portion and the second hook portion have the same cross section in the longitudinal direction, so that both plate-like substrates can be easily connected without accurate positioning in the longitudinal direction. I can do it. Accurate positioning of the two plate-like substrates can be easily performed by moving the two plate-like substrates relative to each other in the longitudinal direction after they have been connected and when sufficient tension is not applied to the stretched fabric. After tensioning, the tensioning fabric can be tensioned with uniform tensile force in the longitudinal direction on both sides using tensioning tools with the same cross-section in the longitudinal direction. It can effectively suppress wrinkles.

(Embodiment) FIGS. 1 to 3 show an embodiment in which the present invention is applied to a method for tensioning a skin in a seat back of an automobile seat.

The seat bag is made up of a seat bag body (not shown) and a leather skin (upholstery fabric) 1 covering the seat bag body. As shown in FIG. 3, the skin 1 includes a front side portion 1a that covers the front and upper surfaces of the seat bag body, a back side portion 1b that covers the back surface, and a lower surface side portion 1c that covers the bottom surface. The front side part 1a and the back side part 1b are sewn together at the upper end of the seat bag body with a bead 2 in between. The front side portion 1a and the lower side portion 1c are directly sewn together at the lower end of the seat bag body. The lower side portion (side portion) 3 of the back side portion 1b and the rear side portion (side portion) 4 of the lower side portion 1c are connected to each other at the lower back side of the seat back body by means of a tensioning device A as shown in Fig. 1. connected.

This tension tool A consists of a first plate-like substrate 5 and a second plate-like substrate 6 obtained by extrusion molding.
The longitudinal dimension is approximately the same as both side parts 3 and 4. The first plate-like substrate 5 sewn to the lower side portion 3 has a small hook portion 5a having the same semicircular cross section in the longitudinal direction at the lower end portion. On the back side of the first plate-like substrate 5, a first
A locking portion 5b is provided.

On the other hand, a second plate-like substrate 6 is sewn to the rear side portion 4.
is provided with a large hook portion 6a having the same semicircular cross section in the longitudinal direction at its upper end. The large hook portion 6a has an inner peripheral surface shape that is the same as or slightly larger than the outer peripheral surface shape of the small hook portion 5a. Therefore, both hook portions 5a,
6a are connected to each other, both plate-like substrates 5 and 6 can be rotated relative to each other about the longitudinal axis, as shown in FIG. As the plate-like substrates 5 and 6 rotate relative to each other in the direction of overlapping, the small hook portion 5a is guided and accommodated on the inner circumferential side of the large hook portion 6a.

Further, a second locking portion 6b is provided on the front side portion of the second plate-shaped substrate 6. This second locking portion 6b is arranged so that the back surface of the first plate-like substrate 5 and the front surface of the second plate-like substrate 6 are connected to each other when the small hook portion 5a is housed inside the large hook portion 6a. When superimposed, both plate-like substrates 5, engage with the first locking portion 5b.
6 can be restrained in a superimposed state.

These plate-like substrates 5 and 6 are made of synthetic resin such as PVC, and the parts 5c and 6 are sewn to the sides 3 and 4.
c is molded into a thin wall made of soft synthetic resin that can be sewn,
The portions provided with the hook portions 5a, 6a and the locking portions 5b, 6b are formed into a thick piece of hard synthetic resin with great rigidity to integrate them. Incidentally, the first plate-like substrate 5 may be attached to the rear side portion 4 of the lower surface side portion 1c, and the second plate-like substrate 6 may be attached to the lower side portion 3 of the rear side portion 1b.

In order to attach the skin 1 to the seat bag main body in the above configuration, first the skin 1 is placed over the seat bag main body from above, and the lower side 3 of the back side part 1b and the rear side 4 of the bottom side part 1c are attached to the back of the seat bag main body. Pull them together at the bottom. A small hook portion 5a of the first plate-like substrate 5 is shown by a phantom line in FIG.
and the large hook portion 6a of the second plate-like substrate 6 shown by the solid line in the same figure. At this time, the pulling operation of both side parts 3 and 4 is for connecting both hook parts 5a and 6a, and can be easily pulled together by a relatively small pulling force. Also, both hook portions 5a,
When connecting the hooks 6a, since each hook portion 5a, 6a has the same cross section in the longitudinal direction, both hook portions 5a, 6a can be connected even if there is an error in the longitudinal direction. The connecting position of both hook parts 5a, 6a in the longitudinal direction can be easily adjusted by relatively moving the hook parts 5a, 6a in the longitudinal direction in the connected state where the tensile force applied to both side parts 3, 4 is small.

In the connected state, the first plate-like substrate 5 is rotated downward (in the direction of the arrow in FIG. 2) about the small hook portion 5a. As the first plate-shaped substrate 5 rotates downward, the lower side 3 is pulled downward and the upper side 4 is pulled upward, and the skin 1 as a whole is gradually tensed.

When the back side of the first plate-like substrate 5 is rotated to the position where it is overlapped with the front side of the second plate-like substrate 6 (solid line in FIG. 2), the lower side 3 of the back side portion 1b and the lower side portion 1c The side portion 4 is drawn toward the side portion 4 by a dimension indicated by L in FIG. This allows the epidermis 3 to be tensed by the dimension L.

Next, when the first plate-shaped substrate 5 is superimposed on the second plate-shaped substrate 6, the first locking part 5b and the second locking part 6b engage with each other, and both plate-shaped substrates 5 , 6 can be restrained and held in a superimposed state. Thereby, the epidermis 1 can be maintained in a tensioned state.

The present invention can be configured in various ways other than those shown in the above embodiments.

For example, in the above embodiment, when both plate-shaped substrates are superimposed, the first locking part of the first plate-shaped substrate engages with the second locking part of the second plate-shaped substrate from above. However, the cross-sectional shapes of both plate-like substrates can be set as appropriate, such as by being configured such that the first locking portion engages with the second locking portion from below. It should be noted that the present invention is not limited to what is shown in the above embodiments, but can of course be used for tensioning work of various tensioned cloths.

(Effects of the Invention) Since the present invention has the above-described structure and operation, it can be connected easily and safely, and is an inexpensive tensioning tool that does not cause wrinkles in the tensioning direction of the tensioned fabric. It is possible to provide a method for installing and stretching the cloth.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of essential parts showing an embodiment of the present invention;
Figure 2 is a longitudinal cross-sectional side view of the main part showing its effect, Figure 3
The figure is a perspective view showing the overall configuration, and FIG. 4 is a longitudinal sectional side view of the main parts showing the prior art. DESCRIPTION OF SYMBOLS 1... tension cloth, 3, 4... side part, 5... first plate-shaped substrate, 5a... small hook part, 5b... first locking part, 6... second plate-like part Board, 6a...Large hook part, 6b...Second locking part, A...Tensioning tool.

Claims (1)

[Scope of Claims] 1. A tensioning tool consisting of first and second plate-shaped substrates that can be fixed to both sides of a tensioned fabric to be connected to each other, wherein the tip of the first plate-shaped substrate A small hook portion having the same cross section in the longitudinal direction is provided on the portion, and the small hook portion can be connected to the small hook portion, and when the two plate-like substrates are relatively rotated in the direction of overlapping each other in the connected state, the small hook portion is attached to the inner surface side. A large hook portion having the same cross section in the longitudinal direction is provided at the tip end of the second plate-like substrate, and a large hook portion having the same cross section in the longitudinal direction is provided on the back side of the first plate-like substrate.
A first locking portion having the same cross section in the longitudinal direction and locking the second locking portion having the same cross section in the longitudinal direction provided on the front side portion of the plate-like substrate to restrain both the plate-like substrates in a superposed state.
A tensioning tool characterized by having a locking part. 2. After fixing the first and second plate-shaped substrates to both sides of the stretched fabric to be connected to each other, and connecting both plate-shaped substrates to the small hook part and the large hook part, Both plate-like substrates are rotated relative to each other in a direction in which the back side portion of the substrate and the front side portion of the second plate-like substrate are overlapped, and the two side portions are drawn together, and the first locking portion and the second plate-like substrate are aligned. 2. The tensioning fabric using the tensioning tool according to claim 1, wherein the tensioning fabric is stretched by engaging the locking portions with each other to restrain both plate-like substrates in an overlapping state. How to install.