JP2011126355A5

JP2011126355A5 -

Info

Publication number: JP2011126355A5
Application number: JP2009284887A
Authority: JP
Filing date: 2009-12-16
Publication date: 2012-03-08
Anticipated expiration: 2029-12-16

Description

図３は、図２に示す点検蓋の周囲（Ｂ部）を客室側から見た平面図である。点検蓋１００は蝶番１３０，１３０を介して台枠３０（床）に回動可能に支持されており、点検蓋１００は蝶番１３０を支点として、客室側に開くことができるように構成されている。さらに、点検蓋１００には、取手１１０と錠１２０が備えられる。取手１１０は点検蓋１００を開閉する際にのみ立設できる構造であり、点検蓋１００を開閉しない時は、点検蓋１００の上面に客室側に突出しない様態で格納される。 FIG. 3 is a plan view of the periphery (part B) of the inspection lid shown in FIG. 2 as viewed from the cabin side. The inspection lid 100 is rotatably supported on the frame 30 (floor) via hinges 130, 130, and the inspection lid 100 is configured to be able to open to the cabin side with the hinge 130 as a fulcrum. . Further, the inspection lid 100 is provided with a handle 110 and a lock 120. The handle 110 can be erected only when the inspection lid 100 is opened and closed. When the inspection lid 100 is not opened and closed, the handle 110 is stored on the upper surface of the inspection lid 100 so as not to protrude toward the cabin.

図４は、図３に示す点検蓋のＤ−Ｄ断面図である。点検蓋１００は、客室側の面（上面）に配置される枠１４０と、機器室側の面（下面）に配置される耐火塗装板１６０とを支え部材１４５で連結して構成されており、その内部に形成される中空部には断熱材１５０が装填されている。耐火塗装板１６０は、火災によって生じる熱が床下機器室Ｃから車内へ流入することを妨げるために備えられるもので、融点が高く耐熱性に優れるステンレス製平板（厚さ５ｍｍ前後）であり、その両面に厚さ２ｍｍ程度に耐熱塗料が塗布されている。耐火塗装板１６０が点検蓋１００の床下機器室Ｃ側に備えられているので、床下機器室Ｃ内で生じた火炎に点検蓋１００が曝されたとしても、点検蓋１００が容易に焼け落ちることはない。 4 is a DD cross-sectional view of the inspection lid shown in FIG. 3. The inspection lid 100 is configured by connecting a frame 140 arranged on the surface (upper surface) on the cabin side and a fireproof coating plate 160 arranged on the surface (lower surface) on the equipment room side with a support member 145, A heat insulating material 150 is loaded in a hollow portion formed in the inside. The fire-resistant coating plate 160 is provided to prevent heat generated by a fire from flowing into the vehicle from the underfloor equipment room C, and is a stainless steel flat plate (thickness around 5 mm) having a high melting point and excellent heat resistance. A heat resistant paint is applied on both sides to a thickness of about 2 mm. Since anti-fire painted plate 160 is provided under the floor equipment room C side of the inspection lid 100, as access door 100 is exposed to a flame produced in the floor equipment chamber C, access door 100 is easily be burned down There is nothing.

図５は、図３に示す点検蓋のＥ−Ｅ断面図である。図５に示される点検蓋１００は台枠３０に備えられる点検蓋受４０に載置され、閉鎖された状態を示す。閉鎖された状態の点検蓋１００において、点検蓋１００を構成する耐火塗装板１６０の周縁部と台枠３０の点検蓋受４０との間に、耐火塗装板１６０の周縁部に備えられた加熱膨張材１９０が位置する。加熱膨張材１９０の内周側は、吸音材１７０を保護する保護板１８０の下面と点検蓋受４０との間に置かれている。 5 is an EE cross-sectional view of the inspection lid shown in FIG. The inspection lid 100 shown in FIG. 5 is placed on the inspection lid receiver 40 provided in the underframe 30 and shows a closed state. In the inspection lid 100 closed state, between the inspection lid receiving 40 of the peripheral portion and the base frame 30 of the anti-fire coated plate 160 which constitutes the access door 100, provided in the periphery of the anti-fire painted plate 160 The heating expansion material 190 is located. The inner peripheral side of the heating expansion material 190 is placed between the lower surface of the protective plate 180 that protects the sound absorbing material 170 and the inspection lid receiver 40.

また、上記の実施例においては、加熱膨張材１９０は、点検蓋１００に備わるとして説明したが、それに限らず、点検蓋１００の周縁部が閉じ状態で対向することになる台枠３０の開口部側、或いは可能であれば双方の側に備えてもよいことは明らかである。 In the above embodiment, the heating expansion material 190 has been described as being provided in the inspection lid 100. However, the present invention is not limited to this, and the opening portion of the frame 30 in which the peripheral portion of the inspection lid 100 is opposed in the closed state. Obviously, it may be provided on either side or, if possible, on both sides.