JP2020200050A

JP2020200050A - Heat insulation cover with lid

Info

Publication number: JP2020200050A
Application number: JP2019106133A
Authority: JP
Inventors: 利恭船戸; Toshitaka Funato; 圭一郎鈴木; Keiichiro Suzuki
Original assignee: Inoue MTP KK; Inoac Corp
Current assignee: Inoac Corp
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-12-17
Anticipated expiration: 2039-06-06
Also published as: JP2023175850A; JP7356265B2

Abstract

【課題】優れた断熱性能を有する蓋付き断熱カバーを提供する。【解決手段】バッテリーＢ等の断熱対象物を収容可能な箱状部１２と、箱状部１２に設けられてバッテリーＢの上部を覆うように開閉可能な蓋部３０とを備える。箱状部の断熱壁部１４には、断熱性を有する肉厚壁部１６と、肉厚壁部１４より厚みの薄い肉薄壁部１８と、肉薄壁部の内側空間１２ａ側に位置するよう設けられた凹状部２０と、凹状部２０の上部側に設けられて内側空間１２ａ側に突出する抜け止め部２２とを備えるようにすると共に、蓋部３０には、厚み方向に弾性変形可能な断熱性を有する凸状部４０を備えおり、蓋部３０を閉じた状態で、凸状部４０が凹状部２０に嵌まり込んで凸状部４０が抜け止め部２２で抜け止めされるようにする。【選択図】図４PROBLEM TO BE SOLVED: To provide a heat insulating cover with a lid having excellent heat insulating performance. SOLUTION: The box-shaped portion 12 capable of accommodating a heat insulating object such as a battery B and a lid portion 30 provided on the box-shaped portion 12 and openable and closable so as to cover the upper part of the battery B are provided. The heat insulating wall portion 14 of the box-shaped portion is located on the side of the thick wall portion 16 having heat insulating properties, the thin wall portion 18 thinner than the thick wall portion 14, and the inner space 12a of the thin wall portion. The concave portion 20 is provided so as to be provided, and the retaining portion 22 provided on the upper side of the concave portion 20 and projecting to the inner space 12a side is provided, and the lid portion 30 can be elastically deformed in the thickness direction. It is provided with a convex portion 40 having excellent heat insulating properties, and with the lid portion 30 closed, the convex portion 40 is fitted into the concave portion 20 and the convex portion 40 is prevented from coming off by the retaining portion 22. To. [Selection diagram] Fig. 4

Description

この発明は、バッテリーなどの断熱対象物の側面全周と上面とを覆うように装着可能な蓋付き断熱カバーに関するものである。 The present invention relates to a heat insulating cover with a lid that can be attached so as to cover the entire side surface and the upper surface of a heat insulating object such as a battery.

自動車などの車両には、エンジンの始動やランプ類等の各種電装品への電力供給のためにバッテリーがエンジンルーム等の所定場所に設置されている。このエンジンルームは、エンジンの運転による温度上昇や外気温の影響を受けて温度変化し易く、高温環境での過放電や低温環境での起電力の低下といったバッテリーの性能の低下を招くことが知られている。そこで、バッテリーを断熱カバーで覆って、バッテリーに熱的環境が与える影響を抑制することが行われている。このような断熱カバーとしては、例えば、特許文献１のように、バッテリー等の断熱対象物の外側面全周を断熱性の壁で覆うようにしたものや、特許文献２,３のように断熱対象物の外側面全周を覆うと共に上面を蓋で覆うようにしたものがある。断熱対象物の上面を蓋で覆うタイプの断熱カバーは、断熱対象物の温度変化を効果的に抑制することができる利点がある。 In vehicles such as automobiles, batteries are installed in predetermined places such as an engine room for starting an engine and supplying electric power to various electrical components such as lamps. It is known that the temperature of this engine room is likely to change due to the temperature rise due to engine operation and the influence of the outside air temperature, leading to deterioration of battery performance such as over-discharging in a high temperature environment and reduction in electromotive force in a low temperature environment. Has been done. Therefore, the battery is covered with a heat insulating cover to suppress the influence of the thermal environment on the battery. Examples of such a heat insulating cover include those in which the entire outer surface of a heat insulating object such as a battery is covered with a heat insulating wall as in Patent Document 1, and heat insulating as in Patent Documents 2 and 3. Some objects cover the entire outer surface of the object and the upper surface is covered with a lid. The type of heat insulating cover that covers the upper surface of the heat insulating object with a lid has an advantage that the temperature change of the heat insulating object can be effectively suppressed.

特許第６０６３８１９号公報Japanese Patent No. 6063819 実開昭５８−１８８９８４号公報Jikkai Sho 58-188984 特表２０１７−５２７４８８号公報Special Table 2017-527488

しかしながら、特許文献２や特許文献３のような蓋付きの断熱カバーは、蓋を閉じた状態で止めるために面ファスナーやクリップ状の留め具を別途設ける必要があり、断熱カバーの製造工数が嵩む欠点がある。特に特許文献３のようにクリップ状の留め具を設ける場合には、留め具を差し込むための開口を断熱カバーに設ける必要があり、断熱カバーの断熱性能が低下する難点がある。 However, in the case of a heat insulating cover with a lid as in Patent Document 2 and Patent Document 3, it is necessary to separately provide a hook-and-loop fastener or a clip-shaped fastener in order to stop the cover in a closed state, which increases the man-hours for manufacturing the heat insulating cover. There are drawbacks. In particular, when a clip-shaped fastener is provided as in Patent Document 3, it is necessary to provide an opening for inserting the fastener in the heat insulating cover, which has a problem that the heat insulating performance of the heat insulating cover is deteriorated.

すなわち本発明は、優れた断熱性能を有する蓋付き断熱カバーを提供することを目的とする。 That is, an object of the present invention is to provide a heat insulating cover with a lid having excellent heat insulating performance.

前記課題を克服し、所期の目的を達成するため、本願の請求項１に係る発明は、
断熱壁部で囲まれた内側空間に断熱対象物を収容可能な箱状部と、前記箱状部に設けられて前記内側空間の上部を覆うように開閉可能な蓋部とを備えた蓋付き断熱カバーであって、
前記箱状部の断熱壁部は、
断熱性を有する肉厚壁部と、
前記肉厚壁部より厚みの薄い肉薄壁部と、
前記肉薄壁部の前記内側空間側に位置するよう設けられた凹状部と、
前記凹状部の上部側に設けられて前記内側空間側に突出する抜け止め部とを備え、
前記蓋部は、
前記箱状部の内側空間に挿入可能な延出部と、
前記延出部に設けられて当該延出部を前記内側空間に挿入した状態で前記断熱壁部と対向する面側に位置し、厚み方向に弾性変形可能な断熱性を有する凸状部とを備え、
前記延出部を前記内側空間に挿入するよう前記蓋部を閉じた状態で、前記凸状部が前記凹状部に嵌まり込むと共に、当該凸状部が前記抜け止め部により抜け止めされるよう構成されていることを要旨とする。
このように、蓋部の延出部を箱状部の内側空間に挿入するよう閉じた状態で、蓋部の凸状部が箱状部の凹状部に嵌まり込んで抜け止め部により抜け止めされるから、蓋部を閉じた状態で保持するための部材を別途設ける必要がなく、蓋付きの断熱カバーの製造工数を簡略化することができる。また、箱状部の断熱壁部に開口を形成することなく蓋部を閉じた状態に保持できるから、優れた断熱性能を実現できる。更に、断熱性を有する凸状部が箱状部の凹状部に嵌まり込むことで、凹状部の形成により箱状部側の断熱性能が低下した場合でも断熱カバー全体としての断熱性能を損なうのを防止できる。 In order to overcome the above problems and achieve the intended purpose, the invention according to claim 1 of the present application is:
With a lid having a box-shaped portion capable of accommodating a heat insulating object in an inner space surrounded by a heat insulating wall portion and a lid portion provided in the box-shaped portion and openable and closable so as to cover the upper part of the inner space. It ’s a heat insulating cover,
The heat insulating wall portion of the box-shaped portion is
Thick wall part with heat insulation and
A thin wall portion thinner than the thick wall portion and a thin wall portion
A concave portion provided so as to be located on the inner space side of the thin wall portion, and
A retaining portion provided on the upper side of the concave portion and protruding toward the inner space side is provided.
The lid is
An extension that can be inserted into the inner space of the box-shaped portion,
A convex portion provided on the extending portion, located on the surface side facing the heat insulating wall portion in a state where the extending portion is inserted into the inner space, and having a heat insulating property that can be elastically deformed in the thickness direction. Prepare,
With the lid closed so that the extending portion is inserted into the inner space, the convex portion is fitted into the concave portion, and the convex portion is prevented from coming off by the retaining portion. The gist is that it is composed.
In this way, with the extended portion of the lid closed so as to be inserted into the inner space of the box-shaped portion, the convex portion of the lid fits into the concave portion of the box-shaped portion and is prevented from coming off by the retaining portion. Therefore, it is not necessary to separately provide a member for holding the lid portion in the closed state, and the man-hours for manufacturing the heat insulating cover with the lid can be simplified. Further, since the lid portion can be held in a closed state without forming an opening in the heat insulating wall portion of the box-shaped portion, excellent heat insulating performance can be realized. Further, since the convex portion having heat insulating properties is fitted into the concave portion of the box-shaped portion, the heat insulating performance of the entire heat insulating cover is impaired even if the heat insulating performance on the box-shaped portion side is deteriorated due to the formation of the concave portion. Can be prevented.

請求項２に係る発明は、
前記延出部は、前記蓋部における開閉の基端となる縁部と反対側に位置する開閉の先端側の縁部に設けられ、
前記蓋部を閉じた状態で前記蓋部の先端側の縁部が近接する断熱壁部に前記凹状部が形成されていることを要旨とする。
このように、蓋部における開閉の基端となる縁部と反対側に位置する開閉の先端側の縁部に凸状部を形成した延出部を設けるようにすることで、蓋部を閉じた状態に安定して保持することができると共に、内側空間内への凸状部の挿脱作業性を高めて、蓋部の開閉を容易に行うことができる。 The invention according to claim 2 is
The extending portion is provided on the edge portion on the tip side of the opening / closing position located on the opposite side of the edge portion serving as the base end of the opening / closing of the lid portion.
It is a gist that the concave portion is formed in the heat insulating wall portion in which the edge portion on the tip end side of the lid portion is close to the lid portion in the closed state.
In this way, the lid is closed by providing an extending portion having a convex portion formed on the edge on the tip side of the opening and closing located on the opposite side of the edge that is the base end of the opening and closing of the lid. The lid can be easily opened and closed by improving the workability of inserting and removing the convex portion into the inner space.

請求項３に係る発明は、
前記延出部は、前記蓋部における開閉の基端となる縁部に連なる両側縁部から延出するよう設けられ、
前記蓋部を閉じた状態で前記蓋部の両側縁部が近接する断熱壁部に前記凹状部が形成されていることを要旨とする。
このように、蓋部における開閉の基端となる縁部に連なる両側縁部に凸状部を形成した延出部を設けるようにすることで、蓋部の両側部に位置する凸状部が箱状部の凹状部に係合して蓋部を閉じた状態に安定して保持することができる。 The invention according to claim 3 is
The extending portion is provided so as to extend from both side edge portions connected to the edge portion serving as the base end of opening and closing of the lid portion.
It is a gist that the concave portion is formed in a heat insulating wall portion in which both side edges of the lid portion are close to each other with the lid portion closed.
In this way, by providing extending portions having convex portions formed on both side edges connected to the edge portion which is the base end of opening and closing of the lid portion, the convex portions located on both side portions of the lid portion can be formed. It can be stably held in a closed state by engaging with the concave portion of the box-shaped portion.

請求項４に係る発明は、
前記蓋部は、前記延出部が連なる位置よりも先端側に、当該蓋部の折り曲げ変位を許容する折曲部許容部が形成されていることを要旨とする。
このように、延出部が連なる位置よりも先端側に蓋部の折り曲げ変位を許容する折り曲げ部を設けることで、蓋部を閉じた状態で部分的に開閉することができる。これにより、断熱対象物の上面側を断熱した状態のまま断熱対象物に対する作業が可能になる。すなわち断熱対象物がバッテリーのような構成物である場合には、その配線接続作業やバッテリー液の補充作業等を、バッテリーの上面を断熱したまま行うことができる。 The invention according to claim 4 is
The gist of the lid portion is that a bent portion permitting portion that allows bending displacement of the lid portion is formed on the tip side of the position where the extending portions are continuous.
In this way, by providing the bent portion that allows the bent displacement of the lid portion on the tip side of the position where the extended portions are continuous, the lid portion can be partially opened and closed in the closed state. As a result, it is possible to work on the heat insulating object while keeping the upper surface side of the heat insulating object insulated. That is, when the heat insulating object is a component such as a battery, the wiring connection work, the battery liquid replenishment work, and the like can be performed while the upper surface of the battery is insulated.

請求項５に係る発明は、
前記箱状部の断熱壁部には、前記蓋部を前記内側空間と反対側に折り返した際に前記凸状部と対応する位置に、当該凸状部を収容可能な退避部が形成されていることを要旨とする。
このように、蓋部を内側空間と反対側に折り返した際に、当該蓋部の凸状部を箱状部の断熱壁部に形成した収容凹部に収容されるようにすることで、凸状部により蓋部の全体的な厚みが嵩高くなった状態でも、断熱カバーをコンパクトに折り畳むことができる。 The invention according to claim 5 is
In the heat insulating wall portion of the box-shaped portion, a retracting portion capable of accommodating the convex portion is formed at a position corresponding to the convex portion when the lid portion is folded back to the side opposite to the inner space. The gist is that
In this way, when the lid portion is folded back to the side opposite to the inner space, the convex portion of the lid portion is accommodated in the accommodating recess formed in the heat insulating wall portion of the box-shaped portion. The heat insulating cover can be folded compactly even when the overall thickness of the lid portion is increased by the portion.

請求項６に係る発明は、
前記凹状部に嵌まり込んだ前記凸状部の突出端が、前記肉薄壁部の壁面に接するよう構成されていることを要旨とする。
このように、凸状部の突出端を肉薄壁部の壁面に接するようすることで、箱状部の断熱性を高めることができる。 The invention according to claim 6 is
The gist is that the protruding end of the convex portion fitted in the concave portion is configured to be in contact with the wall surface of the thin wall portion.
In this way, by contacting the protruding end of the convex portion with the wall surface of the thin wall portion, the heat insulating property of the box-shaped portion can be improved.

本発明によれば、蓋付き断熱カバーの断熱性能を高めることができる。 According to the present invention, the heat insulating performance of the heat insulating cover with a lid can be improved.

本発明の実施例に係る断熱カバーをバッテリーに装着する状態を示す概略斜視図である。It is a schematic perspective view which shows the state which attached the heat insulation cover which concerns on embodiment of this invention to a battery. 断熱カバーを展開した展開パネル体の内面側を示す説明図である。It is explanatory drawing which shows the inner surface side of the development panel body which developed the heat insulating cover. (a)は図２のＡ−Ａ線断面図であり、(b)は図２のＢ−Ｂ線断面図である。(a) is a sectional view taken along line AA of FIG. 2, and (b) is a sectional view taken along line BB of FIG. (a)は蓋体を開放した状態での断熱カバーの断面図であり、(b)は蓋体を閉じた状態での断熱カバーの断面図である。(a) is a cross-sectional view of the heat insulating cover with the lid open, and (b) is a cross-sectional view of the heat insulating cover with the lid closed. 図４の要部拡大図であって、断熱カバーの内側空間にバッテリーを収容した状態を示す。FIG. 4 is an enlarged view of a main part of FIG. 4, showing a state in which a battery is housed in the space inside the heat insulating cover. 断熱カバーの製造工程を示す概略図である。It is the schematic which shows the manufacturing process of a heat insulating cover.

次に、本発明に係る蓋付き断熱カバーにつき、好適な実施例を挙げて、添付図面を参照して以下に説明する。なお、実施例では、断熱対象物として、自動車等の車両のエンジンルームなどに設置されるバッテリーを挙げて説明する。 Next, the heat insulating cover with a lid according to the present invention will be described below with reference to the accompanying drawings with reference to suitable examples. In the embodiment, a battery installed in an engine room of a vehicle such as an automobile will be described as a heat insulating object.

図１に示すように、実施例に係る断熱カバー１０は、バッテリーＢを収容可能な内側空間１２ａを形成した箱状部１２と、当該内側空間１２ａの上部を覆うように箱状部１２に設けられた蓋部３０とを備えている。この箱状部１２は、バッテリーＢの四方の側面に対応する４面の断熱壁部１４により上下に開口する角筒状に形成されている。また蓋部３０は、箱状部１２の１つの面を形成する断熱壁部１４の上端部に、当該断熱壁部１４に対して屈曲可能に連設されており、当該断熱壁部１４との連設縁部を中心として内側空間１２ａを開閉し得るように構成されている(図４参照)。このように、この断熱カバー１０は底のない箱状に形成されて、内側空間１２ａに収容したバッテリーＢの外周面を断熱壁部１４で囲むように覆うと共にバッテリーＢの上面を蓋部３０で覆ったバッテリーＢを、エンジンルーム等に設置した架台に設置し得るようになっている。これにより、断熱カバー１０とバッテリーＢとの間の隙間に入り込んだ異物や漏洩した充填液が断熱カバー１０内に滞留し難くしてある。 As shown in FIG. 1, the heat insulating cover 10 according to the embodiment is provided in the box-shaped portion 12 forming the inner space 12a capable of accommodating the battery B and the box-shaped portion 12 so as to cover the upper portion of the inner space 12a. The lid portion 30 is provided. The box-shaped portion 12 is formed in a square tubular shape that opens up and down by four heat insulating wall portions 14 corresponding to the four side surfaces of the battery B. Further, the lid portion 30 is flexibly connected to the heat insulating wall portion 14 at the upper end portion of the heat insulating wall portion 14 forming one surface of the box-shaped portion 12, and is connected to the heat insulating wall portion 14. It is configured so that the inner space 12a can be opened and closed around the continuous edge portion (see FIG. 4). As described above, the heat insulating cover 10 is formed in a box shape without a bottom, covers the outer peripheral surface of the battery B housed in the inner space 12a so as to be surrounded by the heat insulating wall portion 14, and covers the upper surface of the battery B with the lid portion 30. The covered battery B can be installed on a pedestal installed in an engine room or the like. As a result, foreign matter and leaked filler that have entered the gap between the heat insulating cover 10 and the battery B are less likely to stay in the heat insulating cover 10.

ここで、この実施形態では、矩形状をなすバッテリーＢの四方の側面の内で、幅広になっている側面(長手面)の一方を覆う断熱壁部１４の上端部に蓋部３０が連なるよう設けられている。なお、以下の説明において、蓋部３０が連設されている断熱壁部を第１の長手壁部１４Ａとし、第１の長手壁部１４Ａと対向位置する断熱壁部を第２の長手壁部１４Ｂとし、当該第１の長手壁部１４Ａおよび第２の長手壁部１０Ｂに連設されている一対の断熱壁部を短手壁部１４Ｃとして区別する場合がある。このような断熱カバー１０は、個別に形成した箱状部１２の各断熱壁部１４や蓋部３０の対応する縁部を夫々接合するようにして形成しても良く、また図２に示すように、箱状部１２の４つ角の内の１つの角で断熱壁部１４を分離した状態で展開した展開パネル体Ｐの状態で成形した後に、分離している断熱壁部１４の縁部同士を接合して環状にするように形成してもよい。なお、断熱カバー１０の製造方法に関しては後述する。この図２の例では、第１の長手壁部１４Ａの両側縁部に短手壁部１４Ｃが連設すると共に、一方の短手壁部１４Ｃ(図２では左側)の側縁部に第２の長手壁部１４Ｂが連設するように展開した状態の展開パネル体Ｐを示している。 Here, in this embodiment, the lid portion 30 is connected to the upper end portion of the heat insulating wall portion 14 that covers one of the wide side surfaces (longitudinal surfaces) among the four side surfaces of the rectangular battery B. It is provided. In the following description, the heat insulating wall portion to which the lid portion 30 is continuously provided is referred to as the first longitudinal wall portion 14A, and the heat insulating wall portion located opposite to the first longitudinal wall portion 14A is referred to as the second longitudinal wall portion. 14B may be used, and a pair of heat insulating wall portions connected to the first longitudinal wall portion 14A and the second longitudinal wall portion 10B may be distinguished as the short wall portion 14C. Such a heat insulating cover 10 may be formed by joining the corresponding edges of the heat insulating wall portions 14 and the lid portions 30 of the individually formed box-shaped portions 12, respectively, and as shown in FIG. In addition, the edge portion of the heat insulating wall portion 14 which is separated after being molded in the state of the unfolded panel body P developed in a state where the heat insulating wall portion 14 is separated by one of the four corners of the box-shaped portion 12. They may be joined together to form an annular shape. The method of manufacturing the heat insulating cover 10 will be described later. In the example of FIG. 2, the short wall portions 14C are continuously provided on both side edges of the first longitudinal wall portion 14A, and the second short wall portion 14C (left side in FIG. 2) has a second side edge portion. Shows the unfolded panel body P in a state where the longitudinal wall portions 14B of the above are continuously provided.

また、箱状部１２の断熱壁部１４同士が連設する連設縁部や、断熱壁部１４と蓋部３０との連設縁部には、折曲許容部Ｌが形成されており、当該折曲許容部Ｌにおいて屈曲させるようにして断熱カバー１０を変形させ得るようになっている。この折曲許容部Ｌは、断熱壁部１４や蓋部の外面と内面の夫々に、熱圧縮成形により各連設縁部の全長に亘って筋状の溝を形成することにより構成されている(図２、図３参照)。なお、折曲許容部Ｌを形成する溝は、外面および内面の両面に形成する構成に限らず、一方の面にのみ形成するようにしてもよく、また、連続する線状に溝を形成した構成に限らず、断続的に溝を形成したものであってもよい。 Further, a bending allowance portion L is formed at the continuous edge portion in which the heat insulating wall portions 14 of the box-shaped portion 12 are connected to each other and the continuous edge portion between the heat insulating wall portion 14 and the lid portion 30. The heat insulating cover 10 can be deformed so as to be bent at the bending allowance portion L. The bending allowable portion L is formed by forming streaky grooves over the entire length of each continuous edge portion by heat compression molding on each of the outer surface and the inner surface of the heat insulating wall portion 14 and the lid portion. (See FIGS. 2 and 3). The groove forming the bending allowance portion L is not limited to the configuration formed on both the outer surface and the inner surface, and may be formed only on one surface, or the groove is formed in a continuous linear shape. Not limited to the configuration, the groove may be formed intermittently.

ここで、断熱カバー１０の箱状部１２(断熱壁部１４)および蓋部３０は、基本構成を共通にする複層構造体であって、弾力性を有する発泡体５０と、この発泡体５０の両面を覆うように設けられて発泡体５０を保護する表皮材５２とを備え、厚み方向に弾性変形可能に構成されている。すなわち、箱状部１２(断熱壁部１４)および蓋部３０の夫々は、バッテリーＢ側に対向する内面と、バッテリーＢと反対側を向く外面の夫々に表皮材５２を有している。また、断熱カバー１０は、通気性が低く形成される。なお、エンジンルームに配設される断熱カバー１０は、難燃性を有していることが望ましい。 Here, the box-shaped portion 12 (insulation wall portion 14) and the lid portion 30 of the heat insulating cover 10 are a multi-layer structure having a common basic configuration, and are an elastic foam 50 and the foam 50. It is provided with a skin material 52 which is provided so as to cover both sides of the foam 50 and protects the foam 50, and is configured to be elastically deformable in the thickness direction. That is, each of the box-shaped portion 12 (insulating wall portion 14) and the lid portion 30 has a skin material 52 on an inner surface facing the battery B side and an outer surface facing the opposite side of the battery B. Further, the heat insulating cover 10 is formed to have low air permeability. It is desirable that the heat insulating cover 10 arranged in the engine room has flame retardancy.

この断熱層は、軟質ポリウレタンフォームや、ポリエチレンフォーム、ＥＶＡフォーム等の従来公知の各種発泡体５０を用いることができる。また、発泡体５０は、１種類の発泡体５０から構成してもよく、複数の発泡体５０を積層して構成するようにしてもよい。また、発泡体５０としては、そのクッション性や耐久性に優れ、また熱圧縮成形することができる軟質ポリウレタンフォームを用いることが好適である。このような軟質ポリウレタンフォームは、ポリオール、発泡剤、触媒、整泡剤、ポリイソシアネート、適宜の添加剤(難燃剤、エステル系添加剤等)を含むポリウレタン原料を、攪拌機で混合して反応させて発泡させる公知の方法によって形成される。また、発泡体５０は、通気性が低い独立気泡構造のものが好ましく、非圧縮状態において、その通気性(ＪＩＳＫ６４００−７)が、１．０ｍｌ／ｃｍ^２・ｓ〜８０ｍｌ／ｃｍ^２・ｓの範囲であるものが好適である。このような通気性の発泡体５０により断熱層を構成することで、断熱カバー１０の内外の空気移動による熱移動を抑えることができ、断熱性を高めるのに寄与する。また、発泡体５０は、非圧縮状態において、その密度が１１ｋｇ／ｍ^３〜３０ｋｇ／ｍ^３の範囲にあるものが好ましく、このような密度範囲の発泡体５０から断熱層を構成することで、断熱カバー１０の軽量化を図り得る。 As the heat insulating layer, various conventionally known foams 50 such as flexible polyurethane foam, polyethylene foam, and EVA foam can be used. Further, the foam 50 may be composed of one type of foam 50, or a plurality of foams 50 may be laminated to each other. Further, as the foam 50, it is preferable to use a flexible polyurethane foam which is excellent in cushioning property and durability and can be heat-compressed. In such a flexible polyurethane foam, a polyurethane raw material containing a polyol, a foaming agent, a catalyst, a foam stabilizer, a polyisocyanate, and an appropriate additive (flame retardant, ester-based additive, etc.) is mixed and reacted with a stirrer. It is formed by a known method of foaming. Further, the foam 50 is preferably a low closed cell structure breathable, in an uncompressed state, the air permeability (JIS K 6400-7) ^{is, 1.0ml / cm 2 · s~80ml /} cm 2 · Those in the range of s are preferable. By forming the heat insulating layer with such a breathable foam 50, heat transfer due to air movement inside and outside the heat insulating cover 10 can be suppressed, which contributes to improving the heat insulating property. Further, the foam 50 is in the uncompressed state, that its density is preferably one in the range of ^{^{11kg / m 3 ~30kg / m 3}} , constituting a heat insulating layer of foam 50 of a density range, The weight of the heat insulating cover 10 can be reduced.

また、発泡体５０の厚みは、特に限定されるものではないが、５〜３０ｍｍ程度の厚みに形成することが好適である。特には、発泡体５０を１０ｍｍ以上の厚みとすることで、熱圧縮成形した際に優れた断熱性を実現できる。例えばこのような発泡体５０としての軟質ポリウレタンフォームは、ポリウレタン原料の発泡を常温、大気圧下で行うことで得られる軟質スラブ発泡体５０を所定厚みに裁断して形成することができる。このような軟質スラブ発泡体５０を所定厚みに裁断することで、効率良く発泡体５０が得られる。 The thickness of the foam 50 is not particularly limited, but it is preferably formed to a thickness of about 5 to 30 mm. In particular, by setting the foam 50 to have a thickness of 10 mm or more, excellent heat insulating properties can be realized when heat compression molding is performed. For example, such a flexible polyurethane foam as the foam 50 can be formed by cutting the soft slab foam 50 obtained by foaming the polyurethane raw material at room temperature and atmospheric pressure to a predetermined thickness. By cutting such a soft slab foam 50 to a predetermined thickness, the foam 50 can be efficiently obtained.

表皮材５２は、断熱層の弾性変形に追従して変形する柔軟性、撥水性および耐磨耗性を有している。表皮材５２は、不織布や織物などの布、または合成樹脂のフィルム材等から構成され、この中でも不織布が好適である。不織布としては、ニードルパンチ法、スパンボンド法およびサーマルボンド法などの何れの方法から得られるものであってもよい。 The skin material 52 has flexibility, water repellency, and abrasion resistance that deforms following the elastic deformation of the heat insulating layer. The skin material 52 is made of a non-woven fabric, a cloth such as a woven fabric, a synthetic resin film material, or the like, and the non-woven fabric is preferable. The non-woven fabric may be obtained from any method such as a needle punch method, a spun bond method and a thermal bond method.

箱状部１２の各断熱壁部１４および蓋部３０は、バッテリーＢに対して弾力的に当接可能な肉厚壁部１６と、当該肉厚壁部１６より厚みが薄く形成されてバッテリーＢに対して離間するように位置する肉薄壁部１８とを備えている。この肉薄壁部１８は、各断熱壁部１４や蓋部３０の外周部に位置するよう形成され、当該肉薄壁部１８で囲まれた内側の大部分が肉厚壁部１６をなすよう形成されている。すなわち、肉厚壁部１６により箱状部１２や蓋部３０の基本的な断熱性を確保すると共に、肉薄壁部１８により剛性を高めて箱状部１２や蓋部３０の形状安定性を確保するようにしてある。 Each of the heat insulating wall portion 14 and the lid portion 30 of the box-shaped portion 12 is formed to have a thick wall portion 16 that can elastically contact the battery B and a thickness thinner than the thick wall portion 16. It is provided with a thin wall portion 18 located so as to be separated from the wall. The thin wall portion 18 is formed so as to be located on the outer peripheral portion of each heat insulating wall portion 14 and the lid portion 30, and most of the inside surrounded by the thin wall portion 18 forms the thick wall portion 16. It is formed. That is, the thick wall portion 16 secures the basic heat insulating properties of the box-shaped portion 12 and the lid portion 30, and the thin wall portion 18 increases the rigidity to improve the shape stability of the box-shaped portion 12 and the lid portion 30. I try to secure it.

ここで、各断熱壁部１４や蓋部３０毎に全体で１つの肉厚壁部１６を設けるようにしてもよく、また、各断熱壁部１４や蓋部３０毎に肉厚壁部１６を複数設けるようにしてもよい。なお、この実施形態では、各断熱壁部１４に肉厚壁部１６を上下に並ぶよう２つ設けると共に、蓋部３０における箱状部１２との連設基端側と先端側とに並ぶよう２つ設けてある。また各断熱壁部１４および蓋部３０の肉厚壁部１６の間は、各断熱壁部１４の幅方向に延在する肉薄壁部１８により区切られている。なお、断熱壁部１４の幅方向は、断熱壁部１４毎の上端部の延在方向であり、また蓋部３０の幅方向は、断熱壁部１４との連設縁部の延在方向である。また、各断熱壁部１４および蓋部３０に設けた複数の肉厚壁部１６の厚みは、同じ厚みであっても異なる厚みであってもよく、この実施形態では各断熱壁部１４および蓋部３０毎の肉厚壁部１６の厚みにしてある。各断熱壁部１４に厚みの異なる肉厚壁部１６を複数設ける場合は、断熱壁部１４の上部側に位置する肉厚壁部１６の厚みを大きくすることで、断熱カバー１０の下方の開口からバッテリーＢを挿入して装着する際の装着性を高めることができる。なお、各断熱壁部１４の同じ高さ位置に設ける肉厚壁部１６は、同じ厚みになるよう形成することが好ましい。また、各断熱壁部１４の肉厚壁部１６の厚みと、蓋部３０の肉厚壁部１６の厚みとの関係についても同様に、同じ厚みであっても異なる厚みであってもよい。 Here, one thick wall portion 16 may be provided for each heat insulating wall portion 14 or lid portion 30, and a thick wall portion 16 may be provided for each heat insulating wall portion 14 or lid portion 30. A plurality of them may be provided. In this embodiment, two thick wall portions 16 are provided vertically on each heat insulating wall portion 14, and the lid portion 30 is arranged on the continuous base end side and the tip end side with the box-shaped portion 12. There are two. Further, the heat insulating wall portion 14 and the thick wall portion 16 of the lid portion 30 are separated by a thin wall portion 18 extending in the width direction of each heat insulating wall portion 14. The width direction of the heat insulating wall portion 14 is the extending direction of the upper end portion of each heat insulating wall portion 14, and the width direction of the lid portion 30 is the extending direction of the continuous edge portion with the heat insulating wall portion 14. is there. Further, the thicknesses of the plurality of thick wall portions 16 provided on the heat insulating wall portions 14 and the lid portions 30 may be the same or different, and in this embodiment, the heat insulating wall portions 14 and the lids are provided. The thickness of the thick wall portion 16 for each portion 30 is set. When a plurality of thick wall portions 16 having different thicknesses are provided in each heat insulating wall portion 14, the thickness of the thick wall portion 16 located on the upper side of the heat insulating wall portion 14 is increased to open the lower part of the heat insulating cover 10. It is possible to improve the wearability when the battery B is inserted and mounted. It is preferable that the thick wall portions 16 provided at the same height position of the heat insulating wall portions 14 are formed to have the same thickness. Similarly, the relationship between the thickness of the thick wall portion 16 of each heat insulating wall portion 14 and the thickness of the thick wall portion 16 of the lid portion 30 may be the same or different.

また、蓋部３０の肉厚壁部１６の間の肉薄壁部１８には、蓋部３０の幅方向の全幅に亘って折曲許容部Ｌが形成されている。すなわち、蓋体は、折曲許容部Ｌにより第１の長手壁部１４Ａに連設する第１の蓋体３２と、当該第１の蓋体３２に対して折曲許容部Ｌで連設する第２の蓋体３４とに区切られており、当該折曲許容部Ｌを中心にして第１の蓋体３２に対して第２の蓋体３４を屈曲させ得るようになっている。この折曲許容部Ｌは、前述した断熱壁部１４同士の連設縁部等の折曲許容部Ｌと同様に、蓋部３０の外面と内面の夫々に、熱圧縮成形により形成した筋状の溝により構成されている(図３参照)。なお、折曲許容部Ｌの構成としては、前述と同じく蓋部３０の途中位置で折り曲げ可能な形態であれば良い。 Further, in the thin wall portion 18 between the thick wall portions 16 of the lid portion 30, a bending allowable portion L is formed over the entire width in the width direction of the lid portion 30. That is, the lid body is connected to the first lid body 32 which is continuously provided to the first longitudinal wall portion 14A by the bending allowance portion L and the bending allowance portion L to the first lid body 32. It is divided into a second lid body 34, and the second lid body 34 can be bent with respect to the first lid body 32 around the bending allowance portion L. The bending allowable portion L is a streak formed by heat compression molding on each of the outer surface and the inner surface of the lid portion 30, similarly to the bending allowable portion L such as the continuous edge portion between the heat insulating wall portions 14 described above. It is composed of grooves (see FIG. 3). The structure of the bending allowance portion L may be any shape as long as it can be bent at an intermediate position of the lid portion 30 as described above.

また、断熱壁部１４の内面側には、図２〜図５に示すように、肉厚壁部１６の上部位置に、箱状部１２が形成する内側空間１２ａの内側および上側に向けて開口する凹状部２０が形成されている。この実施形態では、箱状部１２に対して蓋部３０を閉じた状態で、当該蓋部３０に設けた後述する凸状部４０の形成位置に対応するように、一対の短手壁部１４Ｃの夫々と第２の長手壁部１４Ｂとに凹状部２０が１箇所ずつ形成してある。なお、短手壁部１４Ｃの凹状部２０は、第１の長手壁部１４Ａ側に偏った位置に設けられると共に、第２の長手壁部１４Ｂの凹状部２０は、当該第２の長手壁部１４Ｂの幅方向の中間位置に設けるようにしてある。この凹状部２０は、肉厚壁部１６の上縁側の一部を断熱壁部１４の外周を形成する肉薄壁部１８と同様の厚みとなるよう断熱層を熱圧縮成形することで形成されており、凹状部２０の底を肉薄壁部１８が形成している。すなわち、肉薄壁部１８の内側空間１２ａ側に位置するよう凹状部２０が設けられている。 Further, as shown in FIGS. 2 to 5, an opening is opened on the inner surface side of the heat insulating wall portion 14 toward the inside and the upper side of the inner space 12a formed by the box-shaped portion 12 at the upper position of the thick wall portion 16. The concave portion 20 is formed. In this embodiment, with the lid portion 30 closed to the box-shaped portion 12, the pair of short wall portions 14C correspond to the formation position of the convex portion 40, which will be described later, provided on the lid portion 30. A concave portion 20 is formed at each of the second longitudinal wall portion 14B and the second longitudinal wall portion 14B. The concave portion 20 of the short wall portion 14C is provided at a position biased toward the first longitudinal wall portion 14A, and the concave portion 20 of the second longitudinal wall portion 14B is the second longitudinal wall portion. It is provided at an intermediate position in the width direction of 14B. The concave portion 20 is formed by heat-compressing a heat insulating layer so that a part of the upper edge side of the thick wall portion 16 has the same thickness as the thin wall portion 18 forming the outer periphery of the heat insulating wall portion 14. The thin wall portion 18 forms the bottom of the concave portion 20. That is, the concave portion 20 is provided so as to be located on the inner space 12a side of the thin wall portion 18.

そして、凹状部２０を形成した断熱壁部１４には、内側空間１２ａ側に突出する抜け止め部２２が当該凹状部２０の上部側に形成されている。この抜け止め部２２は、前述した肉厚壁部１６と同様に、断熱層を熱圧縮して形成されており、厚み方向に弾力的に変形し得るようになっている。この抜け止め部２２は、少なくとも凹状部２０の上方の開口位置に合わせて形成されており、蓋部３０に設けた凸状部４０を凹状部２０に臨ませた状態で、抜け止め部２２により凸状部４０の上方への抜け止めがなされるようになっている。なお、この実施形態では、凹状部２０を形成した断熱壁部１４の幅方向の略全幅に亘って抜け止め部２２が形成されており、肉厚壁部１６と同様に抜け止め部２２が断熱機能を具有するようなっている。この抜け止め部２２の肉薄壁部１８からの突出高さは、凹状部２０に臨ませた凸状部４０の上部に引っ掛かり得る寸法であればよい。 The heat insulating wall portion 14 on which the concave portion 20 is formed has a retaining portion 22 projecting toward the inner space 12a on the upper side of the concave portion 20. Like the thick wall portion 16 described above, the retaining portion 22 is formed by heat-compressing the heat insulating layer, and can be elastically deformed in the thickness direction. The retaining portion 22 is formed at least in accordance with the opening position above the concave portion 20, and the convex portion 40 provided on the lid portion 30 is made to face the concave portion 20 by the retaining portion 22. The convex portion 40 is prevented from coming off upward. In this embodiment, the retaining portion 22 is formed over substantially the entire width in the width direction of the heat insulating wall portion 14 forming the concave portion 20, and the retaining portion 22 is insulated like the thick wall portion 16. It is designed to have a function. The height of the retaining portion 22 protruding from the thin wall portion 18 may be such that it can be caught on the upper portion of the convex portion 40 facing the concave portion 20.

また、蓋部３０の縁部には、図１、図２に示すように、当該蓋部３０を閉じた状態で箱状部１２の内側空間１２ａに挿入可能な延出部３６,３８が形成されると共に、この延出部３６,３８には、当該延出部３６,３８を内側空間１２ａに挿入した状態で断熱壁部１４と対向する面側(外面側)に、厚み方向に弾性変形可能な断熱性を有する凸状部４０が設けられている。この蓋部３０と延出部３６,３８との境界に折曲許容部Ｌが形成されており、当該折曲許容部Ｌを中心にして蓋部３０に対して延出部３６,３８を屈曲させ得るようになっている。 Further, as shown in FIGS. 1 and 2, extension portions 36 and 38 that can be inserted into the inner space 12a of the box-shaped portion 12 are formed on the edge portion of the lid portion 30 with the lid portion 30 closed. At the same time, the extension portions 36, 38 are elastically deformed in the thickness direction toward the surface side (outer surface side) facing the heat insulating wall portion 14 with the extension portions 36, 38 inserted into the inner space 12a. A convex portion 40 having a possible heat insulating property is provided. A bending allowable portion L is formed at the boundary between the lid portion 30 and the extending portions 36, 38, and the extending portions 36, 38 are bent with respect to the lid portion 30 around the bending allowable portion L. It is designed to be allowed.

ここで、蓋部３０には、蓋部３０の先端側の縁部に設けられた第１の延出部３６と、当該蓋部３０の両側縁部に設けられた第２の延出部３８との３つの延出部が設けられており、各延出部３６,３８に１つの凸状部４０が設けられている。すなわち、図４、図５に示すように、蓋部３０を閉じた状態で、第１の延出部３６に設けた凸状部４０が箱状部１２の第２の長手壁部１４Ｂに形成した凹状部２０に臨んで抜け止めされると共に、第２の延出部３８に設けた凸状部４０が箱状部１２の対応する短手壁部１４Ｃの凹状部２０に臨んで抜け止めされるようになっている。ここで、第２の延出部３８は、当該蓋部３０の第１の蓋体３２の両側縁部に連設する一方で、第２の蓋体３４の縁部に連設しないよう設けられている。すなわち、第１の蓋体３２を閉じた状態(第２の延出部３８に設けた凸状部４０が箱状部１２の対応する短手壁部１４Ｃの凹状部２０に臨んで抜け止めした状態)で、第２の蓋体３４だけを開閉し得るようになっている。 Here, the lid portion 30 has a first extending portion 36 provided on the edge portion on the tip end side of the lid portion 30 and a second extending portion 38 provided on both side edges of the lid portion 30. Three extension portions of the above are provided, and one convex portion 40 is provided on each of the extension portions 36 and 38. That is, as shown in FIGS. 4 and 5, with the lid portion 30 closed, the convex portion 40 provided on the first extending portion 36 is formed on the second longitudinal wall portion 14B of the box-shaped portion 12. The convex portion 40 provided on the second extending portion 38 faces the concave portion 20 of the corresponding short wall portion 14C of the box-shaped portion 12 and is prevented from coming off while facing the concave portion 20. It has become so. Here, the second extending portion 38 is provided so as to be connected to both side edges of the first lid 32 of the lid 30 but not to the edge of the second lid 34. ing. That is, in a state where the first lid 32 is closed (the convex portion 40 provided on the second extending portion 38 faces the concave portion 20 of the corresponding short wall portion 14C of the box-shaped portion 12 and is prevented from coming off. In the state), only the second lid 34 can be opened and closed.

この延出部３６,３８は、前述した肉薄壁部１８と略同じ厚みとなるよう形成されている(図３、図４参照)。また、凸状部４０は、蓋部３０を閉じた状態で突出端部が凹状部２０の底(断熱壁部１４の肉薄壁部１８)に当接するよう形成するのが好ましい。そして、凸状部４０は、蓋部３０を閉じた状態で凸状部４０の外周面が凹状部２０の内周面に当接するよう形成するのが好ましい(図５参照)。このように、凸状部４０の突出端部を凹状部２０の底に当接するよう構成したり、凸状部４０の外周面が凹状部２０の内周面に当接するよう構成することで、凹状部２０を埋めるように凸状部４０が嵌まり込んで、箱状部１２の断熱性を高めることができる。 The extending portions 36 and 38 are formed to have substantially the same thickness as the thin wall portion 18 described above (see FIGS. 3 and 4). Further, the convex portion 40 is preferably formed so that the protruding end portion abuts on the bottom of the concave portion 20 (thin wall portion 18 of the heat insulating wall portion 14) with the lid portion 30 closed. The convex portion 40 is preferably formed so that the outer peripheral surface of the convex portion 40 is in contact with the inner peripheral surface of the concave portion 20 with the lid portion 30 closed (see FIG. 5). In this way, the protruding end portion of the convex portion 40 is configured to abut on the bottom of the concave portion 20, or the outer peripheral surface of the convex portion 40 is configured to abut on the inner peripheral surface of the concave portion 20. The convex portion 40 is fitted so as to fill the concave portion 20, and the heat insulating property of the box-shaped portion 12 can be improved.

断熱壁部１４の外面側には、図３,図４に示すように、箱状部１２を折り畳んだ状態で蓋部３０の外面と第１の長手壁部１４Ａの外面とを重ね合わせるように蓋部３０を外側に折り曲げた際に、各凸状部４０が対応する位置に退避部２４が外側に開口するよう形成されている。この実施形態では、第１の長手壁部１４Ａの外面の下部側に第１の延出部３６の凸状部４０を収容可能な退避部２４が形成され、各短手壁部１４Ｃの外面における第１の長手壁部１４Ａとの連設縁部側に、第２の延出部３８の凸状部４０を収容可能な退避部２４が形成されている。このように、退避部２４を形成することで、外側に折り曲げた蓋部３０の各凸状部４０が断熱壁部１４の外面に干渉することなく対応の退避部２４に収容されて、断熱カバー１０を厚みの薄いコンパクトな状態に折り畳むことを可能にしており、これにより断熱カバー１０の運搬性や収納性を高めることができる。 On the outer surface side of the heat insulating wall portion 14, as shown in FIGS. 3 and 4, the outer surface of the lid portion 30 and the outer surface of the first longitudinal wall portion 14A are overlapped with each other in a folded state of the box-shaped portion 12. When the lid portion 30 is bent outward, the retracting portion 24 is formed so as to open outward at a position corresponding to each convex portion 40. In this embodiment, a retracting portion 24 capable of accommodating the convex portion 40 of the first extending portion 36 is formed on the lower side of the outer surface of the first longitudinal wall portion 14A, and is formed on the outer surface of each short wall portion 14C. A retracting portion 24 capable of accommodating the convex portion 40 of the second extending portion 38 is formed on the side of the continuous edge portion with the first longitudinal wall portion 14A. By forming the retractable portion 24 in this way, each convex portion 40 of the lid portion 30 bent outward is accommodated in the corresponding retractable portion 24 without interfering with the outer surface of the heat insulating wall portion 14, and the heat insulating cover is provided. It is possible to fold the 10 into a thin and compact state, which can improve the transportability and storability of the heat insulating cover 10.

次に、実施例に係る断熱カバー１０の製造方法について説明する。 Next, a method of manufacturing the heat insulating cover 10 according to the embodiment will be described.

本実施形態の断熱カバー１０の製造方法は、表皮材５２を発泡体５０に積層した積層体５５を形成する積層体形成工程と、積層体５５を熱圧縮して箱状部１２の断熱壁部１４および蓋部３０を展開した展開パネル体Ｐを成形する熱圧縮成形工程と、当該展開パネル体Ｐの断熱壁部１４の縁部同士を接合して箱状部１２を形成する接合工程とを備えている。 The method for manufacturing the heat insulating cover 10 of the present embodiment includes a laminate forming step of forming a laminated body 55 in which the skin material 52 is laminated on the foam 50, and a heat insulating wall portion of the box-shaped portion 12 by heat-compressing the laminated body 55. The heat compression molding step of molding the unfolded panel body P in which the 14 and the lid portion 30 are unfolded, and the joining step of joining the edges of the heat insulating wall portion 14 of the unfolded panel body P to form the box-shaped portion 12. I have.

積層体形成工程では、図６に示すように、表皮材５２を発泡体５０に重ねて積層した積層体５５を形成する。この積層体５５形成工程では、フレームラミネート、接着剤を用いるラミネート等のような公知の一体化方法によって、発泡体５０の両面に表皮材５２を一体化するようにしてもよい。ここで、フレームラミネートは、発泡体５０の表面を火炎バーナーの照射等によって溶融し、該溶融面に表皮材５２を積層して溶着する方法である。火炎バーナー等の温度は６００〜１３００℃程度が一般的である。また接着剤を用いるラミネートは、発泡体５０と表皮材５２の少なくとも一方の接着面に接着剤を塗布し、接着剤塗布面を挟むようにして発泡体５０と表皮材５２を重ね、接着する方法である。接着剤としては、ホットメルト接着剤等を用いることができる。 In the laminate forming step, as shown in FIG. 6, the laminate 55 is formed by laminating the skin material 52 on the foam 50. In this laminate 55 forming step, the skin material 52 may be integrated on both sides of the foam 50 by a known integration method such as frame lamination or lamination using an adhesive. Here, the frame laminate is a method in which the surface of the foam 50 is melted by irradiation with a flame burner or the like, and the skin material 52 is laminated and welded on the molten surface. The temperature of a flame burner or the like is generally about 600 to 1300 ° C. Further, the lamination using an adhesive is a method in which an adhesive is applied to at least one adhesive surface of the foam 50 and the skin material 52, and the foam 50 and the skin material 52 are overlapped and bonded so as to sandwich the adhesive application surface. .. As the adhesive, a hot melt adhesive or the like can be used.

熱圧縮成形工程は、表皮材５２と発泡体５０とを積層した積層体５５を、断熱カバー１０の外面および内面の形状に合わせた凹凸形状が形成された加熱圧縮装置１００で熱圧縮する。この加熱圧縮装置１００は、図６に示すように、展開パネル体Ｐの外面形状に合わせた凹凸形状が形成された第１成形型１０１と、展開パネル体Ｐの内面形状に合わせた凹凸形状が形成された第２成形型１０２との間に、当該第１成形型１０１および第２成形型１０２に表皮材５２を向けた姿勢で積層体５５を配置する。具体的に、第１成形型１０１には、蓋部３０の凸状部４０の形成位置に合わせた凹部１０４と、断熱壁部１４の退避部２４の形成位置に合わせた凸部１０６とが形成される。そして、第２成形型１０２には、蓋部３０および断熱壁部１４の肉厚壁部１６の形成位置に合わせた凹部１０４が形成される。また、第２成形型１０２には、蓋部３０および断熱壁部１４の肉薄壁部１８の形成位置に合わせた凸部１０６が形成されている。更に、第１成形型１０１および第２成形型１０２の夫々には、蓋部３０の第１の蓋体３２と第２の蓋体３４との間の折曲許容部Ｌ、第１の蓋体３２と第２の延出部３８との間の折曲許容部Ｌ、第２の蓋体３４と第１の延出部３６との間の折曲許容部Ｌ、および各断熱壁部１４の間の折曲許容部Ｌの形成位置に合わせて突条部１０８が形成されている。 In the heat compression molding step, the laminate 55 in which the skin material 52 and the foam 50 are laminated is heat-compressed by the heat compression device 100 in which the uneven shape matching the shape of the outer surface and the inner surface of the heat insulating cover 10 is formed. As shown in FIG. 6, the heat compression device 100 has a first molding die 101 in which an uneven shape matching the outer surface shape of the developing panel body P is formed, and a concave-convex shape matching the inner surface shape of the developing panel body P. The laminated body 55 is arranged between the formed second molding die 102 and the first molding die 101 and the second molding die 102 in a posture in which the skin material 52 is directed. Specifically, the first molding die 101 is formed with a concave portion 104 that matches the formation position of the convex portion 40 of the lid portion 30, and a convex portion 106 that matches the formation position of the retractable portion 24 of the heat insulating wall portion 14. Will be done. Then, the second molding die 102 is formed with a recess 104 that matches the formation position of the thick wall portion 16 of the lid portion 30 and the heat insulating wall portion 14. Further, the second molding die 102 is formed with a convex portion 106 that matches the formation position of the thin wall portion 18 of the lid portion 30 and the heat insulating wall portion 14. Further, in each of the first molding die 101 and the second molding die 102, the bending allowable portion L between the first lid body 32 and the second lid body 34 of the lid portion 30, and the first lid body Bending allowance part L between 32 and the second extension part 38, bending allowance part L between the second lid 34 and the first extension part 36, and each heat insulating wall part 14. The ridge portion 108 is formed in accordance with the formation position of the bending allowance portion L between them.

そして、図示しない電熱線等の加熱手段により第１成形型１０１および第２成形型１０２を加熱しながら積層体５５を挟むように熱圧縮することで、第１成形型１０１および第２成形型１０２の端面の間に挟まれた位置に肉薄壁部１８が形成され、第１成形型１０１の凹部１０４の形成位置に凸状部４０が形成され、第１成形型１０１の凸部１０６の形成位置に退避部２４が形成されると共に、第２成形型１０２の凹部１０４の形成位置に肉厚壁部１６が形成され、更に、第１成形型１０１および第２成形型１０２の突条部１０８の形成位置に折曲許容部Ｌが形成された圧縮成形体を形成する。その後、圧縮成形体の外縁の余剰部分を図示しないカッター等の切断手段により切断することで展開パネル体Ｐを形成する。第１成形型１０１および第２成形型１０２の加熱温度は、特に限定されるものではないが、１７０〜２１０℃とすることが好ましい。 Then, the first molding die 101 and the second molding die 102 are heat-compressed so as to sandwich the laminated body 55 while heating the first molding die 101 and the second molding die 102 by a heating means such as a heating wire (not shown), so that the first molding die 101 and the second molding die 102 are sandwiched. A thin wall portion 18 is formed at a position sandwiched between the end faces of the first molding die 101, a convex portion 40 is formed at a position where a concave portion 104 of the first molding die 101 is formed, and a convex portion 106 of the first molding die 101 is formed. A retractable portion 24 is formed at a position, a thick wall portion 16 is formed at a position where a recess 104 of the second molding die 102 is formed, and a ridge portion 108 of the first molding die 101 and the second molding die 102. A compression molded body in which the bending allowance portion L is formed is formed at the forming position of. After that, the development panel body P is formed by cutting the excess portion of the outer edge of the compression molded body by a cutting means such as a cutter (not shown). The heating temperature of the first molding die 101 and the second molding die 102 is not particularly limited, but is preferably 170 to 210 ° C.

次いで接合工程において、展開パネル体Ｐの分離した断熱壁部１４の縁部同士を接合して箱状体を形成する。この断熱壁部１４の縁部は、互いに重ね合わせた状態で超音波溶着したり、接着剤により接着固定することで接合することができる。これにより、４面の断熱壁部１４が連設した筒状の箱状部１２が形成される。 Next, in the joining step, the edges of the separated heat insulating wall portions 14 of the developing panel body P are joined to form a box-shaped body. The edges of the heat insulating wall portion 14 can be joined by ultrasonic welding in a state of being overlapped with each other or by adhesively fixing with an adhesive. As a result, a tubular box-shaped portion 12 in which the four heat insulating wall portions 14 are continuously provided is formed.

前述した蓋付き断熱カバー１０は、バッテリーＢに対して箱状部１２を上方から被せて、箱状部１２の断熱壁部１４でバッテリーＢの側面を覆うように装着すると共に、箱状部１２の断熱壁部１４とバッテリーＢの側面との間に差し込むように蓋部３０の延出部３６,３８を箱状部１２の内側空間１２ａに挿入することで、バッテリーＢの上面を蓋部３０で覆うことができる。このとき、延出部３６,３８の凸状部４０や、箱状部１２の抜け止め部２２は、発泡体５０を基材として厚み方向に弾性変形可能に構成されているから、延出部３６,３８を挿入する際に、凸状部４０や抜け止め部２２が弾性変形したり、同じく発泡体５０を基材とする断熱壁部１４の弾性的な変形を伴って箱状部１２の凹状部２０に凸状部４０が嵌まり込むように係合し、これにより蓋部３０が閉じた状態で保持される。また延出部３６,３８を箱状部１２の内側空間１２ａから引き上げるようにすることで、凸状部４０や抜け止め部２２の弾性変形や、断熱壁部１４の弾性的な伸び変形により凸状部４０を凹状部２０から抜き出すことができ、蓋部３０をこれにより蓋部３０を開放することができる。 The above-mentioned heat insulating cover 10 with a lid covers the battery B with the box-shaped portion 12 from above, and is attached so that the heat insulating wall portion 14 of the box-shaped portion 12 covers the side surface of the battery B. By inserting the extending portions 36, 38 of the lid portion 30 into the inner space 12a of the box-shaped portion 12 so as to be inserted between the heat insulating wall portion 14 and the side surface of the battery B, the upper surface of the battery B is covered with the lid portion 30. Can be covered with. At this time, since the convex portions 40 of the extending portions 36 and 38 and the retaining portion 22 of the box-shaped portion 12 are configured to be elastically deformable in the thickness direction using the foam 50 as a base material, the extending portions When the 36, 38 are inserted, the convex portion 40 and the retaining portion 22 are elastically deformed, and the heat insulating wall portion 14 also based on the foam 50 is elastically deformed to form the box-shaped portion 12. The convex portion 40 is engaged so as to be fitted into the concave portion 20, whereby the lid portion 30 is held in a closed state. Further, by pulling the extending portions 36 and 38 from the inner space 12a of the box-shaped portion 12, the convex portion 40 and the retaining portion 22 are elastically deformed, and the heat insulating wall portion 14 is elastically stretched and deformed. The shaped portion 40 can be pulled out from the concave portion 20, and the lid portion 30 can be opened by this.

このように、蓋部３０の延出部３６,３８を箱状部１２の内側空間１２ａに挿入するよう閉じた状態で、蓋部３０の凸状部４０が箱状部１２の凹状部２０に嵌まり込んで抜け止め部２２により抜け止めされるから、蓋部３０を閉じた状態で保持するための部材を別途設ける必要がなく、蓋付きの断熱カバー１０の製造工数を簡略化することができる。また、箱状部１２の断熱壁部１４に開口を形成することなく蓋部３０を閉じた状態に保持できるから、優れた断熱性能を実現できる。更に、発泡体５０から構成されて断熱性を有する凸状部４０が箱状部１２の凹状部２０に嵌まり込むことで、凹状部２０の形成により箱状部１２(断熱壁部１４)の断熱性能が低下したとしても場合でも、当該凹状部２０に位置する凸状部４０の断熱性により断熱カバー１０全体としての断熱性能が損なわれるのを防止できる。 In this way, with the extending portions 36, 38 of the lid portion 30 closed so as to be inserted into the inner space 12a of the box-shaped portion 12, the convex portion 40 of the lid portion 30 becomes the concave portion 20 of the box-shaped portion 12. Since it is fitted and prevented from coming off by the retaining portion 22, it is not necessary to separately provide a member for holding the lid portion 30 in the closed state, and the man-hours for manufacturing the heat insulating cover 10 with a lid can be simplified. it can. Further, since the lid portion 30 can be held in a closed state without forming an opening in the heat insulating wall portion 14 of the box-shaped portion 12, excellent heat insulating performance can be realized. Further, the convex portion 40 composed of the foam 50 and having heat insulating properties is fitted into the concave portion 20 of the box-shaped portion 12, and the concave portion 20 is formed to form the box-shaped portion 12 (insulating wall portion 14). Even if the heat insulating performance is deteriorated, it is possible to prevent the heat insulating performance of the entire heat insulating cover 10 from being impaired due to the heat insulating properties of the convex portion 40 located in the concave portion 20.

そして、このような凸状部４０を、蓋部３０の先端側の縁部に設けた第１の延出部３６に形成することで、蓋部３０を閉じた状態に安定して保持することができるだけでなく、内側空間１２ａ内への凸状部４０の挿脱作業性を高めることができ、蓋部３０の開閉を容易に行うことができるようになる。また、この凸状部４０を蓋体の両側縁部に設けた第２の延出部３８に形成することで、第１の延出部３６に設けた凸状部４０よりも内側空間１２ａ内への挿脱作業性を低くすることができるから、蓋部３０の両側部に位置する凸状部４０が箱状部１２の凹状部２０に係合することで蓋部３０を閉じた状態に安定して保持することができる。このため、車両の走行時等の振動により蓋部３０が不用意に外れて開放するのを防止することができる。 Then, by forming such a convex portion 40 on the first extending portion 36 provided on the edge portion on the tip end side of the lid portion 30, the lid portion 30 is stably held in the closed state. Not only this, but also the workability of inserting and removing the convex portion 40 into the inner space 12a can be improved, and the lid portion 30 can be easily opened and closed. Further, by forming the convex portion 40 in the second extending portion 38 provided on both side edges of the lid, the space 12a inside the convex portion 40 provided in the first extending portion 36 is inside. Since the workability for inserting and removing the lid 30 can be lowered, the convex portions 40 located on both sides of the lid 30 engage with the concave portions 20 of the box-shaped portion 12 to close the lid 30. It can be held stably. Therefore, it is possible to prevent the lid portion 30 from being inadvertently removed and opened due to vibration during traveling of the vehicle or the like.

更に、第２の延出部３８を蓋部３０の第１の蓋体３２に設けると共に、蓋部３０において第２の延出部３８が連なる位置よりも先端側(第１の蓋体３２と第２の蓋体３４の間)に、蓋部３０の折り曲げ変位を許容する折曲許容部Ｌを設けることで、蓋部３０を閉じた状態で第２蓋体のみを部分的に開閉することができる。これにより、バッテリーＢの上面側を第１の蓋体３２で断熱した状態のままバッテリーＢに対する作業が可能になる。すなわち、例えば所謂バッテリー上がり時におけるジャンパー線の接続等の配線接続作業や、バッテリー液の残量確認・補充作業等を、バッテリーＢの上面を断熱したまま行うことができる。 Further, the second extending portion 38 is provided on the first lid 32 of the lid portion 30, and the tip side (with the first lid 32) of the lid portion 30 from the position where the second extending portions 38 are continuous is provided. By providing a bending allowance portion L that allows bending displacement of the lid portion 30 (between the second lid portions 34), only the second lid portion can be partially opened and closed with the lid portion 30 closed. Can be done. As a result, it is possible to work on the battery B while keeping the upper surface side of the battery B insulated by the first lid 32. That is, for example, wiring connection work such as connection of a jumper wire when the battery is dead, confirmation and replenishment work of the remaining amount of battery liquid, and the like can be performed while the upper surface of the battery B is insulated.

また、蓋部３０の外面側に凸状部４０を形成することで、このような凸状部４０を設けていない状態と比べると蓋部３０の全体的な厚みが嵩高くなることは避けられない。ここで、本実施形態の断熱カバー１０は、第１の長手壁部１４Ａの外面の下部側に退避部２４を設けると共におよび各短手壁部１４Ｃの外面における第１の長手壁部１４Ａとの連設縁部側に退避部２４を設けるようにしてある。このため、蓋部３０の外面と第１の長手壁部１４Ａの外面とを重ね合わせるように蓋部３０を外側(内側空間１２ａと反対側)に折り曲げた際に、断熱壁部１４(第１の長手壁部１４Ａや短手壁部１４Ｃ)に形成した退避部２４に凸状部４０を収容することができるから、蓋部３０の厚みが嵩高くなった状態でも、断熱カバー１０をコンパクトに折り畳むことができる。また、各短手壁部１４Ｃの外面に退避部２４を形成することで、第１の長手壁部１４Ａの何れの側縁部を折り曲げるようにして断熱カバー１０を折り畳んだ場合でも、第２の延出部３８の凸状部４０を短手壁部１４Ｃに干渉しないように収容することができる。 Further, by forming the convex portion 40 on the outer surface side of the lid portion 30, it is possible to avoid that the overall thickness of the lid portion 30 becomes bulky as compared with the state in which such a convex portion 40 is not provided. Absent. Here, the heat insulating cover 10 of the present embodiment is provided with a retracting portion 24 on the lower side of the outer surface of the first longitudinal wall portion 14A, and also with the first longitudinal wall portion 14A on the outer surface of each short wall portion 14C. A retracting portion 24 is provided on the continuous edge portion side. Therefore, when the lid portion 30 is bent outward (opposite to the inner space 12a) so that the outer surface of the lid portion 30 and the outer surface of the first longitudinal wall portion 14A overlap each other, the heat insulating wall portion 14 (first). Since the convex portion 40 can be accommodated in the retracting portion 24 formed on the longitudinal wall portion 14A and the short wall portion 14C), the heat insulating cover 10 can be made compact even when the lid portion 30 is thick. Can be folded. Further, by forming the retracting portion 24 on the outer surface of each short wall portion 14C, even when the heat insulating cover 10 is folded by bending any side edge portion of the first longitudinal wall portion 14A, the second The convex portion 40 of the extending portion 38 can be accommodated so as not to interfere with the short wall portion 14C.

(変更例)
前述した実施例の構成に限定されず、例えば以下のように変更することができる。
(１) 実施例では、バッテリーＢの四方の側面の内で、幅広になっている側面(長手面)のを覆う断熱壁部１４(第１の長手壁部１４Ａ)の上端部に蓋部３０が連なるよう設けたが、側面の内で幅の狭い側面(短手面)を覆う断熱壁部１４(短手壁部１４Ｃ)の上端部に蓋部３０が連なるよう設けても良い。
(２) 実施例では、蓋部３０の先端側の縁部に第１の延出部３６を設けると共に、当該蓋部３０の両側縁部に第２の延出部３８を設けるようにしたが、これに限られるものではなく、第１の延出部３６および第２の延出部３８の一方のみを設けるようにしてもよい。
(３) 実施例では、蓋部３０の１つの縁部に延出部を１つ設けるようにしたが、複数の延出部を同じ縁部に設けるようにしてもよい。すなわち、断熱対象物の大きさや形状等に応じて延出部の形成数を適宜に決定することが得きる。
(４) また１つの延出部に対する凸状部の形成数に関しても同様に、複数の凸状部を同じ延出部に設けるようにしてもよい。 (Change example)
The configuration is not limited to the above-described embodiment, and can be changed as follows, for example.
(1) In the embodiment, the lid portion 30 is attached to the upper end portion of the heat insulating wall portion 14 (first longitudinal wall portion 14A) that covers the wide side surface (longitudinal surface) among the four side surfaces of the battery B. However, the lid portion 30 may be provided so as to be continuous with the upper end portion of the heat insulating wall portion 14 (short wall portion 14C) covering the narrow side surface (short side surface) among the side surfaces.
(2) In the embodiment, the first extending portion 36 is provided on the edge portion on the tip end side of the lid portion 30, and the second extending portion 38 is provided on both side edges of the lid portion 30. However, the present invention is not limited to this, and only one of the first extension portion 36 and the second extension portion 38 may be provided.
(3) In the embodiment, one extension portion is provided on one edge portion of the lid portion 30, but a plurality of extension portions may be provided on the same edge portion. That is, it is possible to appropriately determine the number of extending portions to be formed according to the size and shape of the heat insulating object.
(4) Similarly, with respect to the number of convex portions formed with respect to one extending portion, a plurality of convex portions may be provided in the same extending portion.

１０断熱カバー，１２箱状部，１２ａ内部空間，１４断熱壁部，１６肉厚壁部
１８肉薄壁部，２０凹状部，２２抜け止め部，３０蓋部，
３６第１の延出部(延出部)，３８第２の延出部(延出部)
４０凸状部，Ｌ折曲許容部 10 Insulation cover, 12 Box-shaped part, 12a internal space, 14 Insulation wall part, 16 Thick wall part 18 Thin wall part, 20 Concave part, 22 Retaining part, 30 Lid part,
36 1st extension part (extension part), 38 2nd extension part (extension part)
40 Convex part, L bending allowance part

Claims

With a lid having a box-shaped portion capable of accommodating a heat insulating object in an inner space surrounded by a heat insulating wall portion and a lid portion provided in the box-shaped portion and openable and closable so as to cover the upper part of the inner space. It ’s a heat insulating cover,
The heat insulating wall portion of the box-shaped portion is
Thick wall part with heat insulation and
A thin wall portion thinner than the thick wall portion and a thin wall portion
A concave portion provided so as to be located on the inner space side of the thin wall portion, and
A retaining portion provided on the upper side of the concave portion and protruding toward the inner space side is provided.
The lid is
An extension that can be inserted into the inner space of the box-shaped portion,
A convex portion provided on the extending portion, located on the surface side facing the heat insulating wall portion in a state where the extending portion is inserted into the inner space, and having a heat insulating property that can be elastically deformed in the thickness direction. Prepare,
With the lid closed so that the extending portion is inserted into the inner space, the convex portion is fitted into the concave portion, and the convex portion is prevented from coming off by the retaining portion. Insulation cover with lid, which is characterized by being constructed.

The extending portion is provided on the edge portion on the tip side of the opening / closing position located on the opposite side of the edge portion serving as the base end of the opening / closing of the lid portion.
The heat insulating cover with a lid according to claim 1, wherein the concave portion is formed in a heat insulating wall portion in which the edge portion on the tip end side of the lid portion is close to the lid portion in a closed state.

The extending portion is provided so as to extend from both side edge portions connected to the edge portion serving as the base end of opening and closing of the lid portion.
The heat insulating cover with a lid according to claim 1 or 2, wherein the concave portion is formed in a heat insulating wall portion in which both side edges of the lid portion are close to each other in a state where the lid portion is closed.

The heat insulating material with a lid according to claim 3, wherein the lid portion is formed with a bent portion allowable portion that allows bending displacement of the lid portion on the tip end side of a position where the extending portions are continuous. cover.

The heat insulating wall portion of the box-shaped portion is formed with a retracting portion capable of accommodating the convex portion at a position corresponding to the convex portion when the lid portion is folded back to the side opposite to the inner space. The heat insulating cover with a lid according to any one of claims 1 to 4, wherein the heat insulating cover is provided.

The lid according to any one of claims 1 to 5, wherein the protruding end of the convex portion fitted in the concave portion is configured to be in contact with the wall surface of the thin wall portion. With insulation cover.