JP4984224B2 - Folding seat back - Google Patents

Description

  The present invention relates to a folding seat back for assembling a back upper portion so as to be tiltable forward of a lower back portion.

  Conventionally, the base frame is a back frame that allows the upper frame to tilt and the upper and lower side frames are connected to the lower frame. The lower pad and the upper pad are assembled to the lower frame and the upper frame and covered with a trim cover. Various types of folding seat backs that can be tilted forward of the lower part of the back are known.

  In the folding seat back, the upper cover portion that can receive the upper pad including the upper frame and the double cover that can receive the lower pad including the lower frame and can protrude the lower side frame can be received. There has been proposed a technique in which the lower cover portion is sewn between upper and lower open ends, and the back is covered with a trim cover that sews the tension member between the front side and the rear side (Patent Document 1). .

The trim cover prevents the wrinkles from being generated on the trim cover by the tension member, and maintains a good appearance, but a fabric such as a taffeta that connects the front member terminal and the back member terminal with a hook ring From the place of attaching the rubber hook to the lower side of the upper frame and attaching the belt-like rubber string that pulls the terminal on the back side as a tension member, it is troublesome to attach the trim cover including the assembly of each tension member It takes.
JP 2001-199266 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a folding seat back in which a trim cover can be easily assembled and can be kept in a good appearance by preventing generation of wrinkles and internal headings.

The invention according to claim 1 of the present application is a fastener in which a slit that can receive an upper pad including an upper frame is provided in a lateral direction at a substantially central side of a lower surface, and the slit is provided at a slit edge extending between the upper side frames. A cubic quadrilateral top cover sewn so that it can be opened and closed with
A lower-open bag that can accept the lower pad including the lower frame, and a slit that can be protruded from the lower side frame is provided in the horizontal direction at the approximate center of the upper surface, and the slit extends between the lower frame. A lower cover that is sewn so that it can be opened and closed with a fastener provided on the edge;
It consists of a gusset portion provided around the relative edge of the upper surface of the lower cover and the lower surface of the upper cover extending from the left and right sides excluding the substantially central portion of the seating surface side to the back side,
A trim cover in which a lower cover and an upper cover are integrally sewn at a gusset portion is provided to cover the entire back.

  The invention according to claim 2 of the present application is characterized by including a trim cover provided with an open slide fastener for opening and closing each slit.

  The invention according to claim 3 of the present application is characterized by including a trim cover provided with a gusset portion made of a stretchable material.

  The invention according to claim 4 of the present application is provided with a trim cover in which a joint portion made of a stretchable material is interposed between at least one side edge of the fastener to form an upper surface of the lower cover and a lower surface of the upper cover. It is characterized by becoming.

  According to the folding seat back according to claim 1 of the present application, a fastener is provided on the lower surface and a cubic quadrangle upper cover capable of opening and closing a slit for receiving an upper pad including the upper frame, and a fastener provided on the upper surface. Since the bag upper cover and the lower bag lower part are individually covered and assembled by the bag-like lower cover that can project the side frame, wrinkles and the like can be prevented from occurring at the upper and lower bag parts. Also, since the gusset part covers the relative edges of the upper and lower surfaces of the lower cover from the left and right sides excluding the substantially central part on the seating surface side to the lower side, Is not visible from the outside, and the overall appearance of the bag can be kept good.

  When attaching the trim cover, first assemble the entire frame inward from the open side of the lower cover, project the upper frame from the lower side frame through the slit on the upper surface, and place the upper frame inside the upper cover from the slit on the lower surface. The upper pad is assembled to the upper frame from the slit on the lower surface after being inserted into the upper surface, and further, the upper pad and the lower cover are each closed with a zipper between the side frames, and then the lower pad is opened to the lower cover. Since it is assembled to the lower frame from the side and the open side of the lower cover is finally sealed, it can be easily covered.

  When it is necessary to open and close the fastener after the trim cover is attached, the gusset part is not provided in the substantially central part on the seating surface side, so the worker can put his hand on the back upper part of the substantially central part and back It can be easily opened and closed by entering the boundary with the lower part.

  According to the folding seat back according to claim 2 of the present application, since the trim cover provided with the open slide fastener for opening and closing each slit is provided, the opening operation of each slit portion can be easily performed by the open slide fastener.

  According to the folding seat back according to claim 3 of the present application, since the trim cover having the gusset portion made of the stretchable material is provided, the upper cover or the lower cover is pulled as the back upper portion is tilted forward. Can prevent the occurrence of wrinkles.

  According to the folding seat back according to claim 4 of the present application, the lower surface of the upper cover and the upper surface of the lower cover are formed by interposing a joining margin portion of a stretchable material between at least one side edge of the fastener. Since the trim cover is provided, generation of wrinkles and the like can be surely prevented even when the slit portion is closed by the fastener.

  Referring to the accompanying drawings, FIG. 1 schematically shows a sewing structure of a trim cover. The trim cover is made of a fabric material such as fabric, and encloses a lower cover 1 that encloses a lower back portion (including a frame and a pad, not shown) and an upper back portion (including a frame and a pad, not shown). The upper cover 2 and the gusset portion 3 extending between the lower cover 1 and the upper cover 2 are sewn together.

  The lower cover 1 is shown in FIG. 2 (however, the gusset portion 3 is indicated by a broken line), the seat surface skin 10 extending from the center of the seat surface to the front surface, the back surface skin 11 extending from the center of the back surface to the rear surface, and the bank surface. Since the upper side surface 14 (see FIG. 1) is formed by stitching the left and right side surface skins 12 and 13 around the side surface including the upper end surface, it is sewn into a bag having a lower opening that can accept the lower pad including the lower frame. Has been. On the upper surface of the lower cover 1, a slit 16 that can project the lower side frames 15 a and 15 b is provided in a horizontally long shape at a substantially central side.

  The slit 16 is formed to be openable and closable by an open slide fastener 17 that is sewn to a slit edge extending between the lower side frames 15a and 15b. Further, since the joint margin 18 is interposed between the one side tape of the open fastener 17 and the end of the back skin 11, the upper surface of the lower cover 1 excludes the slit portion through which the lower side frames 15a and 15b are passed. Closed.

  As shown in FIG. 3, the lower cover 1 has a back skin 11 sewn so as to be openable and closable by slide fasteners 19a and 19b. In this lower cover, when the lower pad is assembled to the lower frame, the lower pad can be easily assembled to the lower frame by leaving the back skin 11 with the slide fasteners 19a and 19b, and the lower pad can be assembled to the lower frame. If the rear skin 11 is closed with slide fasteners 19a and 19b, the entire cover can be easily attached to the lower pad and the upper pad.

  The upper cover 2 has a cubic quadrangular shape because the lower surface 22 is formed by stitching the seat surface skin 20 extending from the center of the seat surface to the front surface and the back surface skin 21 extending from the bank surface to the rear surface including the upper end surface. It is sewn.

  Similarly to the above-described lower cover 1 (see FIGS. 1 and 2), the upper cover 2 is also provided with a horizontally long slit 23 on the lower surface 22 and an open slide fastener 24 at the slit edge across the side frames. The slit 23 is sewn so that it can be opened and closed by an open slide fastener 24. Further, since the connecting margins 25a and 25b are sewed between the both side tapes of the open fastener 24 and the ends of the seat surface skin 20 and the back surface skin 21, the upper surface 22 of the upper cover 2 also has an upper side frame. It is closed except for the slit part to pass.

  The gusset portion 3 is composed of a lower gusset 3a that is sewn together with the lower cover 1 and an upper gusset 3b that is sewn together with the upper cover 2, and the gussets 3a and 3b are overlapped and sewn at the terminal, so that the stitches are at the bottom It is provided so as to enter between the cover 1 and the upper cover 2. As shown in FIG. 4, the gusset portion 3 includes an upper surface 14 of the lower cover 1 and a lower portion of the upper cover 2 extending from the left and right sides to the back side (see FIG. 3) except at least the substantially central portion (l) on the seating surface side. It is provided around the edge relative to the surface 22.

  The trim cover has a back frame that is connected to the lower frame between the upper and lower side frames so that the upper frame can be tilted as a base frame, and has a lower frame and a separate lower pad and upper pad that can be assembled to the upper frame. And assembled as a folding seat back.

  In order to assemble a folding seat back from the respective components, it is preferable to perform the work while keeping the back skin 11 of the lower cover 1 vacated by the slide fasteners 19a and 19b as described above.

  An example of the assembly work will be described. First, the entire frame is assembled inward from the open side of the lower cover 1 so that the upper frame protrudes from the slit 16 of the upper surface 14 from the lower side frame. After the slit 23 is inserted inside the upper cover 2, the upper pad is assembled to the upper frame from the slit 23 on the lower surface 22, and the slits 14, 23 of the upper cover 2 and the lower cover 1 are placed between the side frames relative to each other. After closing with the open slide fasteners 17 and 24 extending over the lower cover, the lower pad can be assembled to the lower frame from the open side of the lower cover 1.

  During this assembling operation, the slits 14 and 23 of the upper cover 2 and the lower cover 1 are closed by the open slide fasteners 17 and 24 between the side frames, so that generation of wrinkles or the like can be reliably prevented. Finally, the back cover 11 of the lower cover 1 is closed with the slide fasteners 19a and 19b, and the open-side end of the lower cover 1 is wound around the back frame and fastened to be assembled as a folding seat back. .

  In the folding seat back configured as described above, an open slide fastener 17 is provided on the upper surface 14 and a bag-like lower cover 1 capable of projecting the lower side frame, and an open slide fastener 24 is provided on the lower surface and the upper frame. Since the cubic upper cover 2 capable of opening and closing the slit 23 for receiving the upper pad including the upper pad and the lower back portion are individually covered and assembled, wrinkles and the like can be prevented from occurring in the upper and lower back portions.

  At the same time, the gusset portion 3 covers the relative edge of the upper surface 14 of the lower cover 1 and the lower surface 22 of the upper cover 2 from the left and right sides excluding the substantially central portion on the seating surface side to the back side. The boundary between the upper part and the lower part of the back cannot be seen from the outside, and the overall appearance of the back can be kept good. As the back upper part is tilted, the upper and lower parts 3a and 3b of the gusset part 3 have a width as shown in FIG. 5, so that the upper cover 2 or the lower cover 1 can be prevented from being pulled and wrinkles and the like are generated. Can be prevented.

  The gusset portion 3 and the connecting margin portions 17, 25a, 25b described above can be formed of a stretchable material, and in this case, generation of wrinkles and the like can be prevented more reliably. However, the connection margins 17, 25a, 25b may be omitted. Although the description has been made based on the open fastener as the fastener, a bonded fastener may be provided.

It is explanatory drawing which shows the trim cover of the folding seat back which concerns on this invention with a sewing structure. It is a top view which shows the upper cover of the trim cover. It is a back perspective view showing the trim cover. It is a front perspective view which shows the trim cover. It is a side view which shows the seat back which covered the same trim cover in the state of folding.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower cover 14 Upper surface of lower cover 16 Lower cover slit 17 Lower cover fastener 18 Lower cover joint margin 2 Upper cover 22 Upper cover lower surface 23 Upper cover slit 24 Upper cover fasteners 25a, 25b Upper cover Jointing part of

Claims (4)

The back frame is connected to the lower frame between the upper and lower side frames so that the upper frame can be tilted. The lower pad and the upper pad are assembled to the lower frame and the upper frame. In the folding seat back that can be tilted forward,
The upper side of the cubic quadrangle that is sewn so as to be openable and closable with a fastener that is provided in the lateral direction at the substantially central side of the lower surface, and that is provided at the slit edge across the upper side frame. A cover,
A lower-open bag that can accept the lower pad including the lower frame, and a slit that can be protruded from the lower side frame is provided in the horizontal direction at the approximate center of the upper surface, and the slit extends between the lower frame. A lower cover that is sewn so that it can be opened and closed with a fastener provided on the edge;
It consists of a gusset portion provided around the relative edge of the upper surface of the lower cover and the lower surface of the upper cover extending from the left and right sides excluding the substantially central portion of the seating surface side to the back side,
A folding seat back comprising a trim cover in which a lower cover and an upper cover are integrally sewn at a gusset portion to cover the entire back.   The folding seat back according to claim 1, further comprising a trim cover provided with an open slide fastener for opening and closing each slit.   The center-foldable seat back according to claim 1, further comprising a trim cover provided with a gusset portion made of a stretchable material.   2. The trim cover according to claim 1, further comprising: a trim cover having an upper surface of the lower cover and a lower surface of the upper cover with a joint portion made of a stretchable material interposed between at least one side edge of the fastener. Folding seat back as described.

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