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EP-4737217-A1 - SHIELDING MEMBER AND SHIELDING MECHANISM

EP4737217A1EP 4737217 A1EP4737217 A1EP 4737217A1EP-4737217-A1

Abstract

A shielding member (1) that suppresses penetration of noise into a vehicle interior both in a spread sheet state as a single sheet and in a folded state. The shielding member (1) comprises a flexible sheet member (2) that has a plurality of plate parts (3a, 3b) and an intermediate part (4) located between adjacent plate parts (3a, 3b). The sheet member (2) is foldable around the intermediate part (4) and can selectively assume a state in which the sheet member (2) is spread as a single plate and a state in which the plurality of plate parts (3a, 3b) are folded over each other. The plate parts (3a, 3b), with the exception of the intermediate part (4), contain a sound-absorbing layer (6a).

Inventors

  • NISHIBORI, Noriyasu

Assignees

  • Hayashi Telempu Corporation

Dates

Publication Date
20260506
Application Date
20251020

Claims (10)

  1. A shielding member comprising a flexible sheet member that has a plurality of plate parts and an intermediate part located between each of adjacent plate parts, wherein the sheet member is foldable around the intermediate part and can selectively assume a state in which the sheet member is spread as a single plate and a state in which a plurality of the plate parts is folded over each other, and the plate parts, with the exception of the intermediate part, contain a sound-absorbing layer.
  2. The shielding member according to claim 1, wherein the sheet member comprises a pair of skin members arranged facing each other and an intermediate layer sandwiched between the pair of skin members, wherein the intermediate layer comprises the sound-absorbing layer.
  3. The shielding member according to claim 1 or 2, further comprising a plurality of wires each corresponding to one of a plurality of said plate parts and a hinge mechanism corresponding to the intermediate parts, wherein each of the wires surrounds at least a portion of a corresponding plate part, the hinge mechanism is located in the intermediate part and is connected to each of the wires so as to hold the wires of adjacent plate parts in a mutually rotatable manner, and a plurality of the wires and plate parts can be folded around the hinge mechanism of the intermediate part so as to overlap each other.
  4. The shielding member according to any one of claims 1 to 3, wherein the shielding member is placed inside a vehicle in a folded state and functions as a soundproofing member in which the sound-absorbing layers inside the plate parts overlap each other to form a multiple-soundproofing-wall structure.
  5. The shielding member according to any one of claims 1 to 4, wherein the folded shielding portion is held by a support part on the bottom portion or on the inner surface of a side wall of a luggage compartment of the vehicle.
  6. The shielding member according to any one of claims 1 to 5, wherein an intermediate layer of the sheet member has a sound-insulating layer that also has thermal barrier properties.
  7. The shielding member according to any one of claims 1 to 6, wherein an intermediate layer of the sheet member has a sound-absorbing layer and a sound-insulating layer, and wherein the shielding member is provided with a stitched portion in which one skin member is first stitched to the sound-absorbing layer, and a stitched portion in which the other skin member is next stitched to the sound-absorbing layer that is stitched to the one skin member.
  8. The shielding member according to any one of claims 1 to 7, further comprising a plurality of wires each corresponding to a respective one of the plurality of said plate parts, wherein each of the wires surrounds at least a portion of a respective plate part, and the pair of the skin members and the sound-absorbing layer extend to a point of contact with the wire at the outer circumference of the shielding member.
  9. The shielding member according to any one of claims 1 to 8, wherein the sound-absorbing layer of the sheet member is stitched to a skin member along each side of the plate parts along the outer circumference of each plate part when viewed from a direction orthogonal to the sheet member, except for positions of contact with the intermediate part.
  10. A shielding mechanism comprising the shielding member according to any one of claims 1 to 9 and a shelf-like protrusion that protrudes toward the interior of a luggage compartment from an inner surface of a side wall of the luggage compartment of a vehicle and that faces the outer circumference portion of the shielding member.

Description

Technical Field This invention relates to a shielding member and a shielding mechanism. Background Art Patent Document 1 (JP7377681B), Patent Document 2 (WO2021/251193A) and Patent Document 3 (JP6863242B) describe shielding members (also called "cover members", "tonneau covers" or "cargo covers") that cover a luggage compartment from above, at the rear of a vehicle. The shielding members described in Patent Documents 1 and 2 are foldable, and the shielding member described in Patent Document 3 can be rolled up. A shielding member may be removed from the top of the luggage compartment when tall luggage is placed in the luggage compartment, when luggage is not placed in the luggage compartment, or when, for example, a seat is folded forward to form a flat surface continuous with the luggage compartment surface for a passenger to lie down. The shielding members described in Patent Documents 1 and 2 are folded and stored outside the vehicle when removed from the top of the luggage compartment. The shielding member described in Patent Document 3 is rolled up and stored in a rolled-up state when removed from the top of the luggage compartment. Summary of the Invention A shielding member that covers the luggage compartment from above has the effect of preventing the interior of the luggage compartment from being seen and also suppressing noise from the luggage compartment from entering the vehicle interior in which passenger seats are located. In particular, the example of a shielding member described in Patent Document 2 has a sound-insulating layer and a sound-absorbing layer in an intermediate layer, and thus has a good soundproofing effect. However, if the shielding member is removed from the top of the luggage compartment, the effect of suppressing noise from entering the vehicle interior is impaired. In Patent Documents 1-3, no consideration is given to the fact that the soundproofing effect is impaired when the shielding member is removed from the top of the luggage compartment and folded or rolled up. In addition, no conventional shielding member installed in a location of a vehicle other than the luggage compartment has been used to shield the vehicle interior from being seen from the outside and to provide soundproofing effect. The object of the present invention is to provide a shielding member and a shielding mechanism that suppresses the penetration of noise into a vehicle interior in an expanded sheet state and that also suppresses penetration of noise into a vehicle interior in a folded state. A shielding member of the invention comprises a flexible sheet member that has a plurality of plate parts and an intermediate part located between the adjacent plate parts, wherein the sheet member is foldable at the intermediate part and can selectively assume a state in which the sheet member is spread out as a single plate and a state in which the plurality of plate parts are folded over each other, and the plate parts, with the exception of the intermediate part, contain a sound-absorbing layer. The shielding member and shielding mechanism of the present invention suppress noise penetration into a vehicle interior when the shielding member is spread out as a single sheet, and also, have the effect of suppressing noise penetration into the vehicle interior when the shielding member is folded. Brief Description of the Drawings Fig. 1A is a perspective view showing a spread state of a shielding member of the first embodiment of the invention.Fig. 1B is a side view of the shielding member shown in Fig. 1A.Fig. 2A is a perspective view showing a folded state of the shielding member of the first embodiment of the invention.Fig. 2B is a side view of the shielding member shown in Fig. 2A.Fig. 3 is an enlarged cross-sectional view of a part of a sheet member of the shielding member of the first embodiment.Fig. 4 is a side view of a vehicle, schematically showing the first embodiment of the shielding member in use.Fig. 5A is a side view of a vehicle, schematically showing the first embodiment of the shielding member in its housed state.Fig. 5B is a perspective view schematically showing the first embodiment of the shielding member in its housed state.Fig. 6A is a perspective view showing a roof portion of a vehicle in which an example of a shielding member installed.Fig. 6B is a perspective view of the shielding member shown in Fig. 6A.Fig. 6C is a perspective view of another example of a shielding member that is installed on the roof portion of a vehicle.Fig. 7 is a schematic view schematically showing the positional relationship between wires, sheet members, and a hinge mechanism of the shielding member shown in Fig. 1A.Fig. 8A is a perspective view showing the spread state of a shielding member with three plate parts and two intermediate parts.Fig. 8B is a side view of the shielding member shown in Fig. 8A.Fig. 9 is an exploded view of the shielding member shown in Fig. 1A.Fig. 10 is an enlarged perspective view