Struct

Abstract

The present invention provides a structure capable of reducing the number of components. According to the present invention, a structure comprising a resin molded body and a torsion spring can be provided. The resin molded body comprises a front wall and a rear wall separated from each other, and a peripheral wall connecting the peripheries of the front and rear walls. The resin molded body comprises a first plate-shaped portion and a second plate-shaped portion, and a hinge portion, wherein the first and second plate-shaped portions are rotatably connected to each other via the hinge portion. The hinge portion is formed by recessing the rear wall toward the front wall to form a hinge recess and welding the rear wall to the front wall. The torsion spring comprises a first arm and a second arm, and a spring coil portion disposed therebetween. The first arm is slidably supported by the first plate-shaped portion, and the second arm is supported by the second plate-shaped portion. The number of fixing members inserted into the first plate-shaped portion to support the first arm is one or less.

Description

Technical Field

[0001] The present invention relates to a structure that can be used as a luggage board or the like provided in a luggage compartment of a vehicle. Background Art

[0002] In Patent Document 1, one end of a coil spring constituting a hinge mechanism of a plate-like component 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-like portion. A first reinforcement portion arranged to cover the guide groove is fixed to the first plate-like portion by two screws, and the other end of the coil spring is slidably supported by the first plate-like portion.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2014-34369 Summary of the Invention

[0006] (Problems to be solved by the invention)

[0007] In Patent Document 1, a total of three components, namely, a first reinforcement portion and two screws, are used to support the other end of the coil spring, and it is desired to reduce the number of components.

[0008] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a structure capable of reducing the number of parts.

[0009] (Technical solutions to solve problems)

[0010] According to the present invention, a structure can be provided, comprising a resin molded body and a torsion spring, wherein the resin molded body comprises a front wall and a rear wall separated from each other, and a peripheral wall connecting the periphery of the front wall and the rear wall, the resin molded body comprises a first plate-shaped portion and a second plate-shaped portion, and a hinge portion, the first plate-shaped portion and the second plate-shaped portion being rotatably connected to each other by the hinge portion, the hinge portion being formed by recessing the rear wall toward the front wall to form a hinge recess, and welding the rear wall to the front wall, the torsion spring comprising a first arm and a second arm, and a spring coil portion arranged therebetween, the first arm being slidably supported by the first plate-shaped portion, the second arm being supported by the second plate-shaped portion, and the number of fixing parts inserted into the first plate-shaped portion to support the first arm is less than one.

[0011] In the structure of the present invention, the number of fixing members inserted into the first plate-shaped portion to slidably support the first arm is one or less, and thus the number of components can be reduced compared to the configuration of Patent Document 1.

[0012] Various embodiments of the present invention are described below. The embodiments described below can be combined with each other.

[0013] Preferably, in the structure described above, the hinge recess is provided between a side wall on the first plate-shaped portion side and a side wall on the second plate-shaped portion side, and the first arm is inserted into the first plate-shaped portion through an insertion hole provided in the side wall on the first plate-shaped portion side.

[0014] Preferably, in the above-described structure, a contact recess is provided on the rear wall of the first plate-shaped portion at a location facing the first arm within the first plate-shaped portion.

[0015] Preferably, in the structure described above, the first arm includes a base portion and a front end portion, the base portion is a portion connecting the spring coil portion and the front end portion, and the angle of the front end portion relative to the base portion is 45 to 90 degrees.

[0016] Preferably, in the described structure, the first arm is arranged along a guide groove provided on the outer surface of the rear wall of the first plate-shaped portion, and the guide groove is covered with a plate when the first arm is arranged in the guide groove, so that the first arm is supported by the first plate-shaped portion, and the plate is fixed to the first plate-shaped portion by inserting the fixing member into the through hole of the plate.

[0017] Preferably, in the described structure, the guide groove includes a first groove portion and a second groove portion parallel to each other, the first arm includes a first part and a second part parallel to each other, the second part is a part closer to the front end side of the first arm than the first part, and the first part and the second part are respectively arranged in the first groove portion and the second groove portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the structure 1 according to the first embodiment of the present invention.

[0019] Figure 2 yes Figure 1 Magnified view of area A in FIG.

[0020] Figure 3 yes Figure 2 BB cross-section view in.

[0021] Figure 4 yes Figure 2 CC section view in.

[0022] Figure 5 It is from Figure 2 The diagram shows the state after the blind rivet 5 is removed.

[0023] Figure 6 The structure 1 of the second embodiment of the present invention is Figure 2 The corresponding figure.

[0024] Figure 7 yes Figure 6 BB cross-section view in.

[0025] Figure 8 yes Figure 6 CC section view in.

[0026] Figure 9 It is from Figure 6 A diagram showing the state after the blind rivet 5 and the plate 6 are removed. DETAILED DESCRIPTION

[0027] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The various features described in the embodiments below can be combined with each other. In addition, each feature can be independently established as an invention.

[0028] 1. First Implementation

[0029] use Figures 1 to 5 The structure 1 according to the first embodiment of the present invention will be described. The structure 1 can be used as a luggage board or the like provided in a luggage compartment of a vehicle. Figures 1 to 3 As shown, the structure 1 is plate-shaped and includes a resin molded body 2, a core material 3, and a torsion spring 4. The core material 3 is disposed in the resin molded body 2. The core material 3 can be omitted if not required.

[0030] like Figure 1 and Figure 3 As shown, the resin molded body 2 includes a front wall 2f, a rear wall 2r, and a peripheral wall 2s. The front wall 2f and the rear wall 2r are separated from each other, and the front wall 2f and the rear wall 2r are connected by the peripheral wall 2s. The resin molded body 2 can be formed by molding a pair of resin sheets composed of polyolefins such as polypropylene. In addition, by molding the core material 3 between the pair of resin sheets, the core material 3 can be arranged inside the resin molded body 2.

[0031] like Figure 1 As shown, the resin molded body 2 includes first to third plate-like portions 11 to 13 and first and second hinge portions 21 and 22. The plate-like portions 11 and 12 are rotatably connected to each other via the hinge portion 21. The plate-like portions 12 and 13 are rotatably connected to each other via the hinge portion 22. The plate-like portions 13 and the hinge portion 22 may be omitted if not required. Furthermore, the structure 1 may include three or more hinge portions.

[0032] like Figure 1 and Figure 3As shown, hinge portions 21 and 22 can be formed by recessing rear wall 2r toward front wall 2f to form hinge recesses 21a and 22a, and then welding rear wall 2r and front wall 2f together (preferably by welding and compression). Hinge portions 21 and 22 are preferably integral hinges formed integrally with plate-like portions 11 to 13. Hinge recess 21a is provided between side wall 11d on the plate-like portion 11 side and side wall 12d on the plate-like portion 12 side. Side walls 11d and 12d are formed by recessing rear wall 2r toward front wall 2f. Side walls 11d and 12d are preferably tapered, with the spacing between them widening toward rear wall 2r.

[0033] like Figure 2 and Figure 5 As shown, the torsion spring 4 includes a first and a second arm 41, 42, and a spring coil portion 43 provided therebetween. The spring coil portion 43 is arranged at a position adjacent to the hinge portion 21. It is preferred that at least a portion of the spring coil portion 43 is arranged in the hinge recess 21a. In addition, a receiving recess 12e connected to the hinge recess 21a is provided on the side wall 12d, and the spring coil portion 43 can be arranged to span the hinge recess 21a and the receiving recess 12e. The torsion spring 4 is configured to generate a restoring force in the rotational direction by rotating the arms 41, 42 relative to the center axis of the spring coil portion 43. By utilizing the restoring force of the torsion spring 4, for example, a force is generated by rotating the plate-like portion 11 relative to the plate-like portion 12 along the Figure 3 The restoring force from the state rotated in the direction indicated by the middle arrow X (the front wall 2f of the plate-shaped portion 11 is inclined relative to the front wall 2f of the plate-shaped portion 12) to the original state (the front wall 2f of the plate-shaped portion 11 and the front wall 2f of the plate-shaped portion 12 are in the same plane).

[0034] The arm 41 is slidably supported by the plate-shaped portion 11. The arm 41 is inserted into the plate-shaped portion 11 through the insertion hole 11a provided in the plate-shaped portion 11, thereby being slidably supported. Figure 5 As shown, the arm 41 includes a base 41a and a front end 41b. The base 41a is a portion connecting the spring coil portion 43 and the front end 41b. The base 41a is preferably in a straight line shape. In this case, the base 41a can slide easily relative to the insertion hole 11a. The base 41a preferably has a length that does not allow it to fall off even if the plate-like portion 11 rotates relative to the plate-like portion 12. The front end 41b is a portion near the front end and is preferably in a straight line shape. The angle of the front end 41b relative to the base 41a is preferably 45 to 90 degrees, preferably 60 to 90 degrees. In this case, the arm 41 can be prevented from falling off from the insertion hole 11a. Specifically, the angle is, for example, 45, 50, 55, 60, 65, 70, 75, 80, 85, or 90 degrees, or can be within a range between any two of the values exemplified here.

[0035] like Figures 3 and 4As shown, in the plate-shaped portion 11, the core material 3 is preferably not present at the portion 11b where the arm 41 is inserted. This is because if the core material 3 is present at this portion 11b, it will be difficult to insert the arm 41, and there is a concern that the arm 41 will be caught by the core material 3 and will not slide smoothly.

[0036] An abutment recess 11c is provided on the rear wall 2r of the plate-like portion 11 at a location within the plate-like portion 11 that is opposite to the arm 41. The abutment recess 11c can be formed by recessing the rear wall 2r of the plate-like portion 11 toward the front wall 2f. Providing the abutment recess 11c facilitates abutment of the base 41a of the arm 41 against the inner surface of the rear wall 2r. If the base 41a were to separate from the rear wall 2r, the restoring force of the torsion spring 4 would be concentrated at the edge of the insertion hole 11a, potentially causing the insertion hole 11a to expand. However, by providing the abutment recess 11c so that the base 41a approaches or abuts the rear wall 2r, the restoring force of the torsion spring 4 can be dispersed over a wide area of the rear wall 2r, thereby preventing the insertion hole 11a from expanding.

[0037] Thus, in this embodiment, the arm 41 is slidably supported by the plate-like portion 11 simply by inserting the arm 41 into the insertion hole 11 a. Therefore, the number of fixing members (screws, blind rivets, etc.) inserted into the plate-like portion 11 to support the arm 41 is 0, and the number of parts for supporting the arm 41 is also 0. Therefore, according to this embodiment, the number of parts can be reduced.

[0038] The arm 42 is supported by the plate-like portion 12. Figure 5 As shown, the arm 42 includes a base 42a and a curved portion 42b. The base 42a is a portion connecting the spring coil portion 43 and the curved portion 42b. The curved portion 42b is a curved portion, preferably an arc-shaped portion. When the curved portion 42b is arc-shaped, the center angle of the arc of the curved portion 42b is, for example, 90 to 270 degrees, preferably 150 to 210 degrees. The plate-shaped portion 12 includes a guide groove 12a and a bottom hole 12b for a rivet. The guide groove 12a is arranged in a recessed portion 12f provided in the plate-shaped portion 12. The guide groove 12a includes a base 12a1 and a front end portion 12a2. The base 12a1 is a portion that accommodates the base 42a. The front end portion 12a2 is a portion that accommodates the curved portion 42b. The bottom hole 12b for a rivet is preferably arranged at the front end portion 12a2.

[0039] The base portion 42a and the bent portion 42b of the arm 42 are respectively disposed in the base portion 12a1 and the front end portion 12a2 of the guide groove 12a. Figure 3As shown, a blind rivet 5 can be installed in the rivet bottom hole 12b. The blind rivet 5 comprises a hollow rivet body 5a, a flange 5b protruding radially outward from the rivet body 5a, and a mandrel (not shown) that passes through the interior of the rivet body 5a and is connected to the front end of the rivet body 5a. When the mandrel is removed while the rivet body 5a is inserted into the rivet bottom hole 12b, the rivet body 5a expands radially outward, and the rear wall 2r is clamped between the flange 5b and the rivet body 5a, thereby installing the blind rivet 5 in the bottom hole 12b. Furthermore, by covering the bent portion 42b with the flange 5b, the arm 42 is prevented from falling off the plate-like portion 12. In this manner, the arm 42 is non-slidably supported by the plate-like portion 12. Alternatively, the arm 42 can be slidably supported by the plate-like portion 12.

[0040] 2. Second Implementation

[0041] use Figures 6 to 9 A structure 1 according to a second embodiment of the present invention will be described. This embodiment is similar to the first embodiment, but differs mainly in the method of supporting the arm 41. The following description will focus on the differences.

[0042] In this embodiment, the arm 41 is arranged along the guide groove 11e provided on the outer surface of the rear wall 2r of the plate-shaped portion 11. Figures 7 and 8 As shown, the guide groove 11e can be formed by making the rear wall 2r of the plate-shaped portion 11 concave toward the front wall 2f. Figure 8 As shown, the arm 41 is slidably supported by the plate-shaped portion 11 by covering the guide groove 11 e with the plate 6 in a state where the arm 41 is arranged in the guide groove 11 e.

[0043] like Figure 8 As shown, the plate 6 can be secured using a single blind rivet 5. A rivet bottom hole 11f is provided in the rear wall 2r of the plate-shaped portion 11. The bottom hole 11f is located adjacent to the guide groove 11e. The plate 6 has a through hole 6a. When the mandrel (not shown) is removed while the rivet body 5a is inserted into the bottom hole 11f, the rivet body 5a expands radially outward, sandwiching the rear wall 2r and the plate 6 between the flange 5b and the rivet body 5a, thereby securing the plate 6 to the rear wall 2r. The plate 6 preferably comprises a washer having a diameter larger than that of the flange 5b and sufficient to cover the guide groove 11e. Such a washer is available at a low cost.

[0044] According to this configuration, the number of fixing members (screws, blind rivets, etc.) inserted into the plate-shaped portion 11 to support the arm 41 is one. Furthermore, the number of components (plate 6, blind rivet 5) used to support the arm 41 is one. Therefore, according to this embodiment, the number of components can be reduced.

[0045] like Figures 8 and 9As shown, the guide groove 11e preferably includes first and second parallel groove portions 11e1 and 11e2, and a connecting groove portion 11e3 connecting the groove portions 11e1 and 11e2. The groove portions 11e1 and 11e2 are preferably linear. The arm 41 includes first and second parallel portions 41c and 41d, and a connecting portion 41e connecting the portions 41c and 41d. The portions 41c and 41d are preferably linear. The portions 41c and 41d are disposed within the groove portions 11e1 and 11e2, and when the arm 41 slides, the portions 41c and 41d can slide along the groove portions 11e1 and 11e2. Furthermore, the connecting portion 41e is disposed within the connecting groove portion 11e3, and when the arm 41 slides, the connecting portion 41e can slide within the connecting groove portion 11e3.

[0046] The plate 6 preferably covers both grooves 11e1 and 11e2. The bottom hole 11f is preferably located between the grooves 11e1 and 11e2, preferably in the center of each groove. In this configuration, the restoring force of the torsion spring 4 is applied to the plate 6 and the blind rivet 5 securing the plate 6 through the portions 41c and 41d. Since the restoring force is applied to the left and right sides of the blind rivet 5 in a well-balanced manner, the force applied to the blind rivet 5 is not uneven.

[0047] (Explanation of Symbols)

[0048] 1: Structure, 2: Resin molded body, 2f: Front wall, 2r: Rear wall, 2s: Peripheral wall, 3: Core material, 4: Torsion spring, 41: First arm, 41a: Base, 41b: Front end, 41c: First portion, 41d: First portion, 41e: Connecting portion, 42: Second arm, 42a: Base, 42b: Bend, 43: Spring coil, 5: Blind rivet, 5a: Rivet body, 5b: Flange, 6: Plate, 6a: Through hole, 11: First plate-shaped portion, 11a: Insertion hole, 11b: Portion, 11c: Abutting recess, 11d: side wall, 11e: guide groove, 11e1: first groove portion, 11e2: second groove portion, 11e3: connecting groove portion, 11f: bottom hole for rivet, 12: second plate-shaped portion, 12a: guide groove, 12a1: base portion, 12a2: front end portion, 12b: bottom hole for rivet, 12d: side wall, 12e: receiving recess, 12f: recess, 13: third plate-shaped portion, 21: first hinge portion, 21a: hinge recess, 22: second hinge portion, 22a: hinge recess, A: area, X: arrow.

Claims

1. A structure comprising a resin molded body and a torsion spring, The resin molded body includes a front wall and a rear wall that are separated from each other, and a peripheral wall connecting the peripheries of the front wall and the rear wall. The resin molded body includes a first plate-shaped portion, a second plate-shaped portion, and a hinge portion. The first plate-shaped portion and the second plate-shaped portion are rotatably connected to each other via the hinge portion. The hinge portion is formed by recessing the rear wall toward the front wall to form a hinge recess, and welding the rear wall to the front wall. The torsion spring includes a first arm and a second arm, and a spring coil portion disposed 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 fixing members inserted into the first plate-shaped portion to support the first arm is one or less. The first arm is arranged along a guide groove provided on the outer surface of the rear wall of the first plate-shaped portion. By covering the guide groove with a plate in a state where the first arm is arranged in the guide groove, the first arm is supported by the first plate-shaped portion. The plate is fixed to the first plate-shaped portion by inserting the fixing member into the through-hole of the plate.

2. The structure according to claim 1, wherein The guide groove includes a first groove portion and a second groove portion which are parallel to each other. The first arm includes a first portion and a second portion that are parallel to each other, and the second portion is a portion closer to the front end side of the first arm than the first portion. The first portion and the second portion are disposed in the first groove portion and the second groove portion, respectively.

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