JPH0677699U - Seating structure for the seat and backrest of the chair - Google Patents

Abstract

(57) [Summary] [Purpose] The outer peripheral edge of the cover sheet is securely welded to the frame to facilitate the work. [Structure] An acrylic resin is formed on a flange 12 of a vinyl chloride frame 1 formed by integrally surrounding an inward flange 12 on one of the cut ends of a frame-shaped holding piece 11 having the cut ends arranged inside. The outer peripheral edge portion 21 of the outer covering sheet 2 is placed, and the ring sheet 3 is further placed on the outer peripheral edge portion 21 of the outer covering sheet 2, and the flange 12 and the ring sheet 3 are heated by the high frequency heating together with the press. After melting, the cover sheet 2 is welded and the cover sheet 2 is integrally attached to the frame 1. A backrest is formed by injecting and filling urethane and locking the backboard in the locking groove 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure of a seat for a seat or a backrest of a chair.

[0002]

[Prior art]

 Conventionally, a seating sheet (outer cover) attached to a seat portion or a back portion of a chair has a frame-shaped frame like Japanese Patent Publication No. 5-752048, Japanese Utility Model Publication No. 56-13816, and Japanese Patent Publication No. 1-34075. It is simple and effective to insert the outer peripheral edge of the cover sheet into one of the two-forked holding grooves, and heat and melt the frame at that location to weld the cover sheet. However, it was not possible to confirm the insertion of the outer peripheral edge of the cover sheet into the sandwiching groove.If the cover sheet was not fully inserted, the area could not be welded, causing wrinkles and slack in the cover sheet, as well as the problem of damage. It was

[0003]

[Problems to be solved by the device]

 Therefore, the present invention provides a mounting structure for a mounting sheet, which enables the outer peripheral edge portion of the mounting sheet to be reliably welded to the frame to facilitate the work.

[0004]

[Means for Solving the Problems]

 Therefore, according to the present invention, by arranging the cut-off end of the frame-shaped sandwiching piece inside, the locking groove of the inner space is opened inwardly, and at the same time, one cut-off end is provided with an inward flange. It consists of a plastic frame that surrounds the entire body, a cover sheet such as resin or cloth, and a transparent welding ring sheet that is molded in the same resin as the frame in an annular shape.The outer edge of the cover sheet is attached to the flange of the frame. Is mounted on the flange, and the ring seat is placed on the flange for high frequency heating, so that the exterior seat and the ring seat are welded to the flange and integrated with the frame.

[0005]

[Operation] The outer peripheral edge portion of the cover sheet is placed on the flange of the frame, and the ring sheet is placed on the outer peripheral edge portion of the frame sheet. The outer sheet is integrated with the frame by welding through the sheet, and because the ring sheet is transparent, it is possible to confirm the placement state of the outer sheet on the flange, so that the optimal welding can be performed.

[0006]

【Example】

 Hereinafter, the details of the present invention will be described with reference to the illustrated embodiments. In the present example that constitutes the back portion of the chair shown in FIG. 1, 1 is a vinyl chloride frame, and one of the frame-shaped clamping pieces 11 with the cut end is arranged inside It is formed by integrally surrounding a facing flange 12, and an inner locking groove 13 of the holding piece 11 is opened inside.

Reference numeral 2 is a cover sheet made of an acrylic resin, which has a cloth shape to provide good ventilation. Reference numeral 3 denotes a transparent ring sheet for welding which is made of the same vinyl chloride resin as that of the frame 1 and is formed into an annular shape.

Then, as shown in FIG. 2, the locking groove 13 of the frame 1 is locked and stretched on the hook belt ring 4 so that the flange 12 is horizontally arranged on the support base 5, and The outer peripheral edge portion 21 of the outer covering sheet 2 is placed on the outer peripheral edge portion 21, and the ring sheet 3 is further placed on the outer peripheral edge portion 21 of the outer covering sheet 2, and the frame 1 and the ring sheet 3 are heated from above by high frequency heating together with the press. It melts and the cover sheet 2 is welded.

As a result, the cover sheet 2 and the ring sheet 3 are welded to the flange 12 and integrated with the frame 1, and the flange 12 is removed from the hook belt ring 4 to inject and fill the urethane 6, or urethane. After adhering the plate or the like, the back plate 7 may be locked in the locking groove 13 to form the backrest.

As described above, according to the present embodiment, at the time of heat welding, the mounting sheet 2 and the ring sheet 3 can be set by placing them on the flange 12, and as in the conventional case, the mounting sheet can be inserted into the holding groove. Since it does not require, it can be set easily and smoothly. In addition, since the ring sheet 3 is transparent, the mounting state of the lower cover sheet 2 can be confirmed, so that the ring seat 3 can be welded in an optimum state, and the welding failure of the cover sheet does not occur.

Although this example has the above-mentioned configuration, the present invention is not limited to this. For example, regardless of the shape of the frame and the type of plastic material, the width and shape of the inwardly extending flanges that surround the frame are not limited. The material and shape of the cover sheet are also appropriate.

Further, the width and shape of the welding ring sheet are arbitrary, and the material thereof may be the same resin as the flange of the frame. It should be noted that the use part may be the seat part other than the back part of the chair of this example.

[0013]

[Effect of device]

 According to the present invention, unlike the conventional case, it is not necessary to insert the cover sheet into the holding groove, and the cover sheet and the ring sheet are placed on the flange and heat-welded, so that they can be set easily and quickly, and the ring sheet is transparent. Therefore, the mounting state of the lower cover sheet can be confirmed, and the effect of smooth mounting work is great, and the cover sheet can be welded in an optimal state without causing a defective welding of the cover sheet.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway enlarged vertical sectional view showing the welding work.

FIG. 3 is a partially cutaway vertical sectional view showing a back portion thereof.

[Explanation of symbols]

 1 Frame 11 Clamping Piece 12 Flange 13 Locking Groove 2 Outer Seat 21 Outer Peripheral Edge 3 Ring Sheet 4 Hook Belt Ring 5 Support 6 Urethane 7 Backboard

Claims (1)

[Scope of utility model registration request] 1. A frame-shaped sandwiching piece is provided with a cut-off end inside so that an inner locking groove is opened inward so as to be circumferentially provided, and one cut-off end is provided with an inward flange. A plastic frame that is integrally provided, and a cover sheet such as resin or cloth,
It consists of a frame and a transparent welding ring sheet formed in the same resin in an annular shape, and the outer peripheral edge of the cover sheet is placed on the flange of the frame. And a mounting structure for mounting a seat on a seat and a back of a chair, characterized in that a ring seat is welded to a flange to be integrated with a frame.