US-12617346-B2 - Structure

US12617346B2US 12617346 B2US12617346 B2US 12617346B2US-12617346-B2

Abstract

A structure usable as a luggage board or similar in a luggage compartment of a vehicle, including a resin-molded body and a torsion spring. The resin-molded body includes a front wall spaced apart from a rear wall and a peripheral wall connecting peripheries of the front and rear wall, as well as first and second plate-shaped portions which are rotatably coupled to each other with a hinge portion. The hinge portion is formed by concaving the rear wall toward the front wall, forming a hinge concave portion and welding the rear wall to the front wall. The torsion spring includes first and second arms and a coil therebetween. The first arm is slidably supported by the first plate-shaped portion. The second arm is supported by the second plate-shaped portion. The number of a fixation tool inserted into the first plate-shaped portion to support the first arm is one or less.

Inventors

Masaaki Sueoka
Ryuichi Ishida
Takashi Imada
Katsuki TANAKA
Kenta Suzuki

Assignees

KYORAKU CO., LTD.
HAYASHI TELEMPU CORPORATION

Dates

Publication Date: 20260505
Application Date: 20210421
Priority Date: 20200427

Claims (3)

1 . A structure, comprising: a resin-molded body; a core material; and a torsion spring, wherein: the resin-molded body comprises a front wall and a rear wall spaced apart from each other, the resin-molded body comprises a first portion, a second portion, and a hinge portion, the first portion and the second portion are rotatably coupled to each other with the hinge portion, the hinge portion is formed by making the rear wall concave toward the front wall to form a hinge concave portion and welding the rear wall to the front wall, the torsion spring comprises a first arm, a second arm, and a coil portion provided therebetween, the first arm is slidably supported by the first portion, the second arm is supported by the second portion, the hinge concave portion is provided between a side wall on a side of the first portion and a side wall on a side of the second portion, the first arm is inserted into the first portion through an insertion hole provided in the side wall on the side of the first portion, the rear wall of the first portion is provided with a contact concave portion at a part facing the first arm in the first portion, the contact concave portion is a depression defined in the rear wall, wherein the rear wall is depressed towards the front wall at the contact concave portion, the core material is disposed within the resin molded body, and the first arm is disposed, with respect to a thickness direction of the first portion, in a space between the contact concave portion of the rear wall and the core material.
2 . The structure of claim 1 , wherein: the first arm comprises a base portion and a tip portion, the base portion is a part that connects the coil portion and the tip portion, and an angle of the tip portion with respect to the base portion is 45 to 90 degrees.
3 . A structure, comprising: a resin-molded body; a core material; and a torsion spring, wherein: the resin-molded body comprises a front wall and a rear wall spaced apart from each other, the resin-molded body comprises a first portion, a second portion, and a hinge portion, the first portion and the second portion are rotatably coupled to each other with the hinge portion, the hinge portion is formed by making the rear wall concave toward the front wall to form a hinge concave portion and welding the rear wall to the front wall, the torsion spring comprises a first arm, a second arm, and a coil portion provided therebetween, the first arm is slidably supported by the first portion, the second arm is supported by the second portion, the hinge concave portion is provided between a side wall on a side of the first portion and a side wall on a side of the second portion, the first arm is inserted into the first portion through an insertion hole provided in the side wall on the side of the first portion, the rear wall of the first portion is provided with a contact concave portion at a part facing the first arm in the first portion, the contact concave portion is a depression defined in the rear wall, wherein the rear wall is depressed towards the front wall at the contact concave portion, the core material is disposed within the resin molded body, and the first arm is disposed, with respect to a direction perpendicular to a bottom surface of the contact concave portion, in a space between the contact concave portion of the rear wall and the core material.

Description

TECHNICAL FIELD The present invention relates to a structure that can be used as a luggage board or the like installed in the luggage compartment of a vehicle. BACKGROUND ART In Patent Literature 1, one end of a coil spring that constitutes a hinge mechanism of a plate-shaped member is inserted into a base resin and a core material, and the other end is arranged along a guide groove provided in a first plate-shaped portion. Further, by fixing a first reinforcing portion arranged so as to cover the guide groove to the first plate-shaped portion with two screws, the other end of the coil spring is slidably supported by the first plate-shaped portion. CITATION LIST Patent Literature Patent Literature 1: JP-A-2014-34369 SUMMARY OF INVENTION Technical Problem In Patent Literature 1, a total of three components of one first reinforcing portion and two screws are used to support the other end of the coil spring, but it is desired to reduce the number of components. The present invention has been made in view of such circumstances, and aims to provide a structure capable of reducing the number of components. Solution to Problem According to the present invention, there is provided a structure comprising a resin-molded body and a torsion spring, wherein: the resin-molded body comprises a front wall and a rear wall spaced apart from each other and a peripheral wall connecting peripheries of the front wall and the rear wall; the resin-molded body comprises first and second plate-shaped portions and a hinge portion; the first and second plate-shaped portions are rotatably coupled to each other with the hinge portion; the hinge portion is formed by making the rear wall concave toward the front wall to form a hinge concave portion and welding the rear wall to the front wall; the torsion spring comprises first and second arms and a coil portion provided therebetween; the first arm is slidably supported by the first plate-shaped portion; the second arm is supported by the second plate-shaped portion; and the number of a fixation tool inserted into the first plate-shaped portion to support the first arm is one or less. In the structure of the present invention, the number of the fixation tools inserted into the first plate-shaped portion to slidably support the first arm is one or less, so compared to the configuration of Patent Literature 1, it is possible to reduce the number of components. Hereafter, various embodiments of the present invention are exemplified. The embodiments shown below can be combined with each other. Preferably, in the structure described above, the hinge concave portion is provided between a side wall on a side of the first plate-shaped portion and a side wall on a side of the second plate-shaped portion, and the first arm is inserted into the first plate-shaped portion through an insertion hole provided in the side wall on the side of the first plate-shaped portion. Preferably, in the structure described above, the rear wall of the first plate-shaped portion is provided with a contact concave portion at a part facing the first arm in the first plate-shaped portion. Preferably, in the structure described above, the first arm comprises a base portion and a tip portion, the base portion is a part that connects the coil portion and the tip portion, and an angle of the tip portion with respect to the base portion is 45 to 90 degrees. Preferably, in the structure described above, the first arm is arranged along a guide groove provided on an outer surface of the rear wall of the first plate-shaped portion, the first arm is supported by the first plate-shaped portion by covering the guide groove with a plate while the first arm is arranged in the guide groove, and the plate is fixed to the first plate-shaped portion by inserting the fixation tool through a through hole of the plate. Preferably, in the structure described above, the guide groove comprises first and second groove portions parallel to each other, the first arm comprises first and second parts parallel to each other, the second part being a part closer to a tip side of the first arm than the first part, and the first and second parts are arranged in the first and second groove portions, respectively. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a plan view of a structure 1 according to the first embodiment of the present invention. FIG. 2 is an enlarged view of an area A in FIG. 1. FIG. 3 is a cross-sectional view taken along B-B in FIG. 2. FIG. 4 is a cross-sectional view taken along C-C in FIG. 2. FIG. 5 is a view showing a state in which a blind rivet 5 is removed from FIG. 2. FIG. 6 is a view of a structure 1 according to the second embodiment of the present invention, corresponding to FIG. 2. FIG. 7 is a cross-sectional view taken along B-B in FIG. 6. FIG. 8 is a cross-sectional view taken along C-C in FIG. 6. FIG. 9 is a view showing a state in which a blind rivet 5 and a plate 6 are removed from FIG. 6. DESCRIPTION OF EMBODIMENTS Embodiments