JP6588779B2

JP6588779B2 - Lock mechanism and box

Info

Publication number: JP6588779B2
Application number: JP2015180843A
Authority: JP
Inventors: 崇志川島
Original assignee: Inoac Corp
Current assignee: Inoac Corp
Priority date: 2015-09-14
Filing date: 2015-09-14
Publication date: 2019-10-09
Anticipated expiration: 2035-09-14
Also published as: JP2017056946A

Description

この発明は、箱体の箱本体に開閉可能に取り付けられた蓋体を、閉じ姿勢でロックするロック機構およびこのロック機構が設けられた箱体に関するものである。 The present invention relates to a lock mechanism that locks a lid body attached to a box body of a box body so as to be openable and closable in a closed position, and a box body provided with the lock mechanism.

宅配される牛乳、ジュース、ヨーグルトおよびアイスクリームなどの温度管理が必要な物品を一時保存するものとして、特許文献１に示す断熱容器が提案されている。このような断熱容器は、後縁が容器本体にヒンジ接続された蓋体によって容器本体の上部開口を開閉可能になっている。そして、断熱容器は、蓋体および容器本体の前縁に設けられたロック機構により、容器本体の上部開口を塞ぐ閉じ姿勢で蓋体の開放を規制できる。特許文献１のロック機構は、蓋体を閉じた際に、蓋体の下面から垂下するＬ字状の係合突起が、容器本体に形成されたガイド突条の切欠き部に引っ掛かり、蓋体を閉じることで特に操作することなく蓋体をロックできる。また、断熱容器と別体のロック解除具を断熱容器に設けた挿入孔に挿入して、係合突起を切欠き部から外すことで、ロック機構によるロックを解除して、蓋体の開放を許容している。 A thermal insulation container shown in Patent Document 1 has been proposed as a temporary storage of articles requiring temperature control, such as milk, juice, yogurt, and ice cream to be delivered. In such a heat insulating container, the upper opening of the container body can be opened and closed by a lid body whose rear edge is hinged to the container body. And the heat insulation container can regulate opening of a cover body in the closed posture which closes the upper opening of a container body by the lock mechanism provided in the front edge of the cover body and the container body. In the lock mechanism of Patent Document 1, when the lid is closed, an L-shaped engagement protrusion hanging from the lower surface of the lid is caught by a notch portion of the guide protrusion formed on the container body, By closing the lid, the lid can be locked without any particular operation. In addition, the unlocking tool separate from the heat insulating container is inserted into the insertion hole provided in the heat insulating container, and the engagement protrusion is removed from the notch, thereby releasing the lock by the locking mechanism and opening the lid. Allowed.

特開２００４−１００９２号公報JP 2004-10092 A

特許文献１の構成は、物品の出し入れの最中に蓋体を閉じてしまうと、ロック機構が働いて蓋体の開放を規制してしまう。すなわち、特許文献１のロック機構は、不用意に蓋体を閉じてしまうたびに、ロック解除具でロック解除しなくてはならず、使い勝手が悪い。 In the configuration of Patent Document 1, if the lid is closed during taking in / out of the article, the lock mechanism works to restrict the opening of the lid. That is, the lock mechanism disclosed in Patent Document 1 must be unlocked with the unlocking tool every time the lid is inadvertently closed, which is inconvenient.

すなわち本発明は、従来の技術に係る前記問題に鑑み、これらを好適に解決するべく提案されたものであって、蓋体が意図せずロックされるのを防止するロック機構および箱体を提供することを目的とする。 That is, the present invention has been proposed in view of the above-described problems related to the prior art, and provides a lock mechanism and a box that prevent the lid from being unintentionally locked. The purpose is to do.

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に係る発明のロック機構は、
箱体の箱本体に開閉可能に取り付けられた蓋体を、該箱本体の開口を塞いだ閉じ姿勢でロックするロック機構であって、
前記蓋体に取り付けられ、ロック解除位置と該ロック解除位置より下降したロック位置の間で昇降可能に構成され、ロック解除位置から下方へ押すだけのロック操作によりロック位置に移動するロック部材と、
前記蓋体に設けられ、ロック解除位置からロック位置に向かう前記ロック部材の移動経路に重なって該ロック部材をロック解除位置で支持する係合解除位置と、ロック位置にあるロック部材に押されてロック部材の移動経路から退避する係合位置との間で弾性変形する係合部と、
前記箱本体に設けられ、前記ロック部材により係合位置に弾性変形した前記係合部に引っ掛かって前記蓋体の開放を規制する係合受部とを備えたことを要旨とする。
請求項１に係る発明によれば、ロック部材をロック解除位置からロック位置に下降させる操作により係合部と係合受部とが引っ掛かって蓋体の開放を規制する構成であるので、ロック部材の下降操作を行わない限り、蓋体を閉じ姿勢としてしまっても蓋体を開けなくなることはない。このように、ロック機構は、下降操作したロック部材により弾性変形された係合部と係合受部とが引っ掛かる簡単な構成で蓋体をロックできると共に、使用者が意図することなく蓋体をロックしてしまうことを防止して、使い勝手を向上できる。 In order to overcome the above-mentioned problem and achieve the intended purpose, the locking mechanism of the invention according to claim 1 of the present application is
A lock mechanism that locks the lid attached to the box body of the box so that it can be opened and closed in a closed position in which the opening of the box body is closed,
A lock member attached to the lid body, configured to be movable up and down between a lock release position and a lock position lowered from the lock release position, and moved to the lock position by a lock operation only by pressing downward from the lock release position ;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
The gist includes an engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member and restricts the opening of the lid.
According to the first aspect of the present invention, since the engagement portion and the engagement receiving portion are hooked by the operation of lowering the lock member from the unlock position to the lock position, the opening of the lid body is restricted. Unless the lowering operation is performed, the lid will not be opened even if the lid is closed. Thus, the lock mechanism can lock the lid body with a simple configuration in which the engaging portion and the engagement receiving portion that are elastically deformed by the lowering lock member are hooked, and the lid body is not intended by the user. It is possible to prevent the lock and improve usability.

請求項２に係る発明では、箱体の箱本体に開閉可能に取り付けられた蓋体を、該箱本体の開口を塞いだ閉じ姿勢でロックするロック機構であって、
前記蓋体に取り付けられ、ロック解除位置と該ロック解除位置より下降したロック位置の間で昇降可能なロック部材と、
前記蓋体に設けられ、ロック解除位置からロック位置に向かう前記ロック部材の移動経路に重なって該ロック部材をロック解除位置で支持する係合解除位置と、ロック位置にあるロック部材に押されてロック部材の移動経路から退避する係合位置との間で弾性変形する係合部と、
前記箱本体に設けられ、前記ロック部材により係合位置に弾性変形した前記係合部に引っ掛かって前記蓋体の開放を規制する係合受部と、
前記箱本体に昇降可能に設けられると共に閉じ姿勢にある前記蓋体のロック部材の下方に位置して、自重で保持される下降位置からの押し上げ操作により、ロック位置にある該ロック部材をロック解除位置に向けて押し上げる解除部材とを備えたことを要旨とする。
請求項２に係る発明によれば、ロック部材をロック解除位置からロック位置に下降させる操作により係合部と係合受部とが引っ掛かって蓋体の開放を規制する構成であるので、ロック部材の下降操作を行わない限り、蓋体を閉じ姿勢としてしまっても蓋体を開けなくなることはない。このように、ロック機構は、下降操作したロック部材により弾性変形された係合部と係合受部とが引っ掛かる簡単な構成で蓋体をロックできると共に、使用者が意図することなく蓋体をロックしてしまうことを防止して、使い勝手を向上できる。また、解除部材の押し上げ操作によりロック部材をロック位置からロック解除位置に上昇させる簡単な構成でロックを解除できる。 The invention according to claim 2 is a lock mechanism for locking the lid attached to the box body of the box so as to be openable and closable in a closed posture in which the opening of the box body is closed,
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box main body and is hooked on the engagement portion elastically deformed to an engagement position by the lock member to restrict the opening of the lid;
Unlocking the lock member in the locked position by pushing up from the lowered position held by its own weight, located below the lock member of the lid body that is provided in the box body so as to be movable up and down and in the closed position The gist of the present invention is to provide a release member that pushes up toward the position.
According to the second aspect of the present invention, since the engagement portion and the engagement receiving portion are hooked by the operation of lowering the lock member from the lock release position to the lock position, the opening of the lid body is restricted. Unless the lowering operation is performed, the lid will not be opened even if the lid is closed. Thus, the lock mechanism can lock the lid body with a simple configuration in which the engaging portion and the engagement receiving portion that are elastically deformed by the lowering lock member are hooked, and the lid body is not intended by the user. It is possible to prevent the lock and improve usability. Further , the lock can be released with a simple configuration in which the lock member is lifted from the lock position to the lock release position by pushing up the release member.

請求項３に係る発明では、前記解除部材は、前記箱本体に設けられた取付口に取付部を嵌め合わせて、該箱本体に対して着脱可能に取り付けられ、
前記解除部材は、該解除部材の上面に設けられた作動制御部を前記箱本体に設けられた挿通口に通して、下降位置からの上昇が許容される作動向きと、作動向きから上下の軸回りに反転して、箱本体に設けられた作動規制部に作動制御部が当接して下降位置からの上昇が規制される不作動向きとに取り付け可能に構成されたことを要旨とする。
請求項３に係る発明によれば、解除部材を取り付ける向きに応じて、解除部材によるロック解除機能の有無を選択することができ、簡単な構成でロック機構の機能に幅を持たせることができる。 In the invention according to claim 3, the release member is detachably attached to the box body by fitting the attachment portion to an attachment port provided in the box body.
The release member passes an operation control unit provided on the upper surface of the release member through an insertion port provided in the box body, and an operation direction in which the lift from the lowered position is allowed, and a vertical axis from the operation direction. The gist of the invention is that it is configured to be able to be mounted in a non-operating direction in which the operation control unit abuts on an operation regulating unit provided on the box body and the ascent from the lowered position is regulated.
According to the invention which concerns on Claim 3, according to the direction which attaches a release member, the presence or absence of the lock release function by a release member can be selected, and the width | variety can be given to the function of a lock mechanism with simple structure. .

請求項４に係る発明では、箱体の箱本体に開閉可能に取り付けられた蓋体を、該箱本体の開口を塞いだ閉じ姿勢でロックするロック機構であって、
前記蓋体に取り付けられ、ロック解除位置と該ロック解除位置より下降したロック位置の間で昇降可能なロック部材と、
前記蓋体に設けられ、ロック解除位置からロック位置に向かう前記ロック部材の移動経路に重なって該ロック部材をロック解除位置で支持する係合解除位置と、ロック位置にあるロック部材に押されてロック部材の移動経路から退避する係合位置との間で弾性変形する係合部と、
前記箱本体に設けられ、前記ロック部材により係合位置に弾性変形した前記係合部に引っ掛かって前記蓋体の開放を規制する係合受部とを備え、
前記ロック部材は、
前記蓋体の外面に露出するように配置されたロック操作部と、
前記ロック操作部から下方へ延出するように形成され、前記蓋体に上下に貫通して設けられたロック設置口に挿入されてロック部材のロック位置で前記係合部に当たるロック本体部と、
前記ロック本体部と並んで前記ロック操作部から下方へ延出して、該ロック本体部に接離する方向へ弾性変形可能に形成され、前記ロック設置口に挿入されると共に該ロック設置口の開口縁との当接によりロック部材に抵抗を与える制動部と、
前記ロック本体部と前記制動部との間に設けられ、該制動部の弾性変形を調節する変形調節部とを備えたことを要旨とする。
請求項４に係る発明によれば、ロック部材をロック解除位置からロック位置に下降させる操作により係合部と係合受部とが引っ掛かって蓋体の開放を規制する構成であるので、ロック部材の下降操作を行わない限り、蓋体を閉じ姿勢としてしまっても蓋体を開けなくなることはない。このように、ロック機構は、下降操作したロック部材により弾性変形された係合部と係合受部とが引っ掛かる簡単な構成で蓋体をロックできると共に、使用者が意図することなく蓋体をロックしてしまうことを防止して、使い勝手を向上できる。また、ロック本体部と制動部との間に設けられた変形調節部によって制動部の弾性変形を調節して、ロック設置口と制動部との当接でロック部材に付与される抵抗を、適宜位置で停止させるなど適切な度合いにすることができる。 The invention according to claim 4 is a lock mechanism that locks the lid attached to the box body of the box so as to be openable and closable in a closed posture in which the opening of the box body is closed,
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member to restrict the opening of the lid,
The locking member is
A lock operation unit arranged to be exposed on the outer surface of the lid;
A lock main body formed so as to extend downward from the lock operation portion, inserted into a lock installation port provided vertically through the lid body, and hitting the engagement portion at a lock position of a lock member;
Along with the lock body portion, the lock operation portion extends downward, and is formed so as to be elastically deformable in a direction contacting and separating from the lock body portion, and is inserted into the lock installation port and the lock installation port is opened. A braking portion that provides resistance to the lock member by contact with the edge;
The gist is provided with a deformation adjusting portion that is provided between the lock main body portion and the braking portion and adjusts elastic deformation of the braking portion.
According to the invention of claim 4, since the engaging portion and the engaging receiving portion are hooked by the operation of lowering the lock member from the unlocked position to the locked position, the opening of the lid is restricted. Unless the lowering operation is performed, the lid will not be opened even if the lid is closed. Thus, the lock mechanism can lock the lid body with a simple configuration in which the engaging portion and the engagement receiving portion that are elastically deformed by the lowering lock member are hooked, and the lid body is not intended by the user. It is possible to prevent the lock and improve usability. Further, the elastic deformation of the braking portion is adjusted by the deformation adjusting portion provided between the lock main body portion and the braking portion, and the resistance applied to the lock member by the contact between the lock installation port and the braking portion is appropriately set. It can be set to an appropriate degree such as stopping at a position.

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５に係る発明の箱体は、
箱体の箱本体に開閉可能に取り付けられた蓋体を、該箱本体の開口を塞いだ閉じ姿勢でロックするロック機構が設けられた箱体であって、
前記ロック機構は、
前記蓋体に取り付けられ、ロック解除位置と該ロック解除位置より下降したロック位置の間で昇降可能なロック部材と、
前記蓋体に設けられ、ロック解除位置からロック位置に向かう前記ロック部材の移動経路に重なって該ロック部材をロック解除位置で支持する係合解除位置と、ロック位置にあるロック部材に押されてロック部材の移動経路から退避する係合位置との間で弾性変形する係合部と、
前記箱本体に設けられ、前記ロック部材により係合位置に弾性変形した前記係合部に引っ掛かって前記蓋体の開放を規制する係合受部とを備え、
前記箱本体は、該箱本体の外郭をなす外箱と、該外箱の内側に設けられて、物品を収容する収容室を画成する内箱とを備え、
前記外箱に設けられた外箱設置部と前記内箱に設けられた内箱設置部とに囲われて前記収容室および外部と区画された区画部に、該内箱設置部に形成された前記係合受部が配置されると共に、蓋体を閉じ姿勢とした際に前記係合部が前記区画部に挿入され、
前記区画部内で前記ロック部材に押されて係合解除位置から係合位置に弾性変形した前記係合部と前記係合受部とが該区画部内で引っ掛かると共に、係合部が弾性により係合位置から係合解除位置に戻るよう構成されたことを要旨とする。
請求項５に係る発明によれば、使い勝手のよいロック機構によって蓋体の開放を適切に規制することができる。また、ロック機構の係合部と係合受部とが区画部内で引っ掛かる構成であるので、外部から無理矢理にロック解除することを防止することができる。 In order to overcome the above-mentioned problems and achieve the intended object, the box of the invention according to claim 5 of the present application is:
A box provided with a lock mechanism for locking a lid attached to the box body of the box so that it can be opened and closed in a closed posture with the opening of the box body closed ,
The locking mechanism is
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member to restrict the opening of the lid,
The box body includes an outer box that forms an outline of the box body, and an inner box that is provided inside the outer box and defines a storage chamber that stores articles.
Formed in the inner box installation section in a compartment section surrounded by the outer box installation section provided in the outer box and the inner box installation section provided in the inner box and partitioned from the storage chamber and the outside The engagement receiving portion is disposed, and the engagement portion is inserted into the partition portion when the lid is closed,
The engagement portion that is pushed by the lock member in the partition portion and elastically deformed from the disengagement position to the engagement position is hooked in the partition portion, and the engagement portion is engaged by elasticity. The gist is that it is configured to return from the position to the disengagement position.
According to the invention which concerns on Claim 5, the opening of a cover body can be appropriately controlled by the convenient lock mechanism. Further, since the engaging portion and the engaging receiving portion of the lock mechanism are hooked in the partition portion, it is possible to prevent the lock from being forcibly released from the outside.

本発明に係るロック機構によれば、蓋体を不用意にロックすることなく、使い勝手を向上することができる。また、本発明に係る箱体によれば、使い勝手のよいロック機構によって蓋体を適切にロックすることができる。 According to the lock mechanism of the present invention, usability can be improved without inadvertently locking the lid. Moreover, according to the box which concerns on this invention, a cover body can be appropriately locked by the convenient locking mechanism.

本発明の実施例に係る箱体を示す概略斜視図であり、(ａ)は蓋体が閉じ姿勢にあり、(ｂ)は蓋体が開き姿勢にある。なお、(ｂ)はロック部材および保持部材を蓋体から外した状態で示す。It is a schematic perspective view which shows the box which concerns on the Example of this invention, (a) is a cover body in a closed position, (b) is a cover body in an open position. In addition, (b) shows the state which removed the lock member and the holding member from the cover body. 実施例の箱体の要部を示す側面図であり、(ａ)はロック部材がロック解除位置にあり、(ｂ)はロック部材がロック位置にある。It is a side view which shows the principal part of the box of an Example, (a) is a lock member in a lock release position, (b) is a lock member in a lock position. 図２(ａ)のＡ矢視である。It is A arrow view of Fig.2 (a). (ａ)は、図１(ａ)のＢ−Ｂ線で破断した端面図であり、(ｂ)は(ａ)のＣ部拡大図であって、ロック部材がロック解除位置にある。(a) is the end elevation broken by the BB line of Drawing 1 (a), (b) is the C section enlarged view of (a), and a lock member is in a lock release position. 図４(ａ)のＣ部に対応する端面図であって、(ａ)はロック部材がロック位置にあり、(ｂ)は解除部材でロック部材を押し上げている状況を示す。4A and 4B are end views corresponding to a portion C in FIG. 4A, in which FIG. 4A shows a state in which the lock member is in the lock position, and FIG. 実施例の箱本体を分解して示す概略斜視図である。It is a schematic perspective view which decomposes | disassembles and shows the box main body of an Example. 実施例の蓋体を分解して示す概略斜視図である。It is a schematic perspective view which decomposes | disassembles and shows the cover body of an Example. 実施例の蓋体の要部を左右に破断して示す端面図であって、(ａ)はロック部材がロック解除位置にあり、(ｂ)はロック部材がロック位置にある。It is an end elevation which cuts and shows the principal part of the lid of an example from right and left, (a) is a lock member in a lock release position, (b) is a lock member in a lock position. 実施例の解除部材を示す概略斜視図である。It is a schematic perspective view which shows the cancellation | release member of an Example. 実施例の箱本体の要部を示す底面図であって、解除部材を取り外した状態である。It is a bottom view which shows the principal part of the box main body of an Example, Comprising: It is the state which removed the releasing member. 実施例の外箱の要部を左右に破断して示す端面図であって、(ａ)は作動向きで取り付けた解除部材が下降位置にあり、(ｂ)は作動向きで取り付けた解除部材が上昇位置にあり、(ｃ)は不作動向きで取り付けた解除部材の上昇が規制される状況を示す。BRIEF DESCRIPTION OF THE DRAWINGS It is an end view which fractures | ruptures and shows the principal part of the outer case of an Example, Comprising: (a) is the cancellation | release member attached in the operation direction, and (b) is the release member attached in the operation | movement direction. In the raised position, (c) shows a situation where the lifting of the release member attached in the non-operating direction is restricted. 実施例の外箱の要部を前後に破断して示す端面図であって、(ａ)は作動向きで取り付けた解除部材が下降位置にあり、(ｂ)は作動向きで取り付けた解除部材が上昇位置にあり、(ｃ)は不作動向きで取り付けた解除部材の上昇が規制される状況を示す。BRIEF DESCRIPTION OF THE DRAWINGS It is an end view which fractures | ruptures and shows the principal part of the outer case of an Example, Comprising: (a) is the releasing member attached in the operation | movement direction, (b) is the releasing member attached in the operation | movement direction. In the raised position, (c) shows a situation where the lifting of the release member attached in the non-operating direction is restricted.

次に、本発明に係るロック機構および箱体につき、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、箱体として、宅配される牛乳、ジュース、ヨーグルトおよびアイスクリームなどの温度管理が必要な物品を一時保存する断熱容器を例示して説明する。 Next, the locking mechanism and the box according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. In the embodiment, an example of a heat insulating container that temporarily stores articles requiring temperature management such as milk, juice, yogurt, and ice cream delivered as a box will be described.

図１に示すように、実施例に係る箱体１０は、物品を収容可能な収容室１２ａを内部に有する箱本体１２と、この箱本体１２の上部後縁に図示しないヒンジを介して回動可能に取り付けられた蓋体１４とを備えている。箱体１０は、後縁が箱本体１２にヒンジで接続された蓋体１４が、箱本体１２の上部に被さって箱本体１２の上部に開口する収容室１２ａの出し入れ口を塞ぐ閉じ姿勢(図１(ａ))と、箱本体１２の後縁に立ち上がって出し入れ口を開放する開き姿勢(図１(ｂ))との間で開閉するようになっている。また、箱体１０には、ヒンジの反対側となる前側に、閉じ姿勢にある蓋体１４をロックするロック機構１６が設けられている(図４および図５参照)。箱体１０は、ロック機構１６のロック操作により蓋体１４が閉じ姿勢でロックされ、ロック機構１６のロック解除操作により蓋体１４を閉じ姿勢から開き姿勢に向けて開放可能になる。 As shown in FIG. 1, a box body 10 according to the embodiment rotates through a box main body 12 having a storage chamber 12a capable of storing articles therein and a hinge (not shown) at the upper rear edge of the box main body 12. And a lid 14 that can be attached. The box body 10 has a closed posture in which a lid body 14 whose rear edge is connected to the box body 12 by a hinge covers the upper portion of the box body 12 and closes the entrance / exit of the storage chamber 12a that opens to the upper portion of the box body 12 (see FIG. 1 (a)) and an open posture (FIG. 1 (b)) that rises at the rear edge of the box body 12 and opens the entrance / exit. The box body 10 is provided with a lock mechanism 16 for locking the lid body 14 in the closed position on the front side opposite to the hinge (see FIGS. 4 and 5). The box body 10 is locked in the closed position by the lock operation of the lock mechanism 16, and can be opened from the closed position to the open position by the unlocking operation of the lock mechanism 16.

図４(ａ)および図６に示すように、箱本体１２は、該箱本体１２の外郭をなす外箱１８と、この外箱１８の内側に間隔をあけて配置されて、収容室１２ａを画成する内箱２０と、外箱１８および内箱２０の間に配置されて、スチレン系発泡体などからなる本体断熱材２２を備えた断熱構造となっている。ここで、外箱１８および内箱２０は、ポリプロピレン(ＰＰ)からなる樹脂成形品が用いられている。箱体１０において、外箱１８や内箱２０やその他の部品などを樹脂成形品で構成すれば、樹脂特有の可撓性を利用して、後述する弾性変形する係合部４０等を有するロック機構１６など、箱体１０を構成する機構を円滑に作動させることができるので望ましい。外箱１８、内箱２０および本体断熱材２２は、何れも上方に開放した箱状に形成されている。箱本体１２は、外箱１８の内部に合わせて外形が設定された本体断熱材２２が外箱１８の内部に隙間なく嵌まると共に、本体断熱材２２の内部に合わせて外形が設定された内箱２０が本体断熱材２２の内部に隙間なく嵌まっている。外箱１８の前壁上部には、本体断熱材２２が収容される本体部分から前方に張り出して、ロック機構１６の構成要素が設けられる外箱設置部２４が上方に開放するように形成されている。また、内箱２０の上端には、外方へ延出するフランジ部２０ａが形成されると共に、該フランジ部２０ａの前縁から前方に張り出して、ロック機構１６の構成要素が設けられる内箱設置部２６が形成されている。箱本体１２において、内箱２０のフランジ部２０ａが本体断熱材２２の上端および外箱１８の上端の上側に重なっている。外箱設置部２４の上部開口に合わせて形成された内箱設置部２６は、該上部開口の上側に重なって該上部開口を塞ぎ、外箱設置部２４と内箱設置部２６との間に区画部２７が画成されている。なお、区画部２７は、外箱設置部２４と内箱設置部２６とで囲われる空間であって、この空間の領域において、後述の第１係合突起４０ａおよび第２係合突起４０ｂを含む係合部４０が、ロック部材３８の上下動に連係して作動する。 As shown in FIG. 4A and FIG. 6, the box body 12 is arranged with an outer box 18 forming an outline of the box body 12 and an inner side of the outer box 18 with a space therebetween. It is arranged between the inner box 20 to be defined, the outer box 18 and the inner box 20, and has a heat insulating structure including a main body heat insulating material 22 made of styrene-based foam or the like. Here, as the outer box 18 and the inner box 20, resin molded products made of polypropylene (PP) are used. In the box 10, if the outer box 18, the inner box 20, and other parts are made of a resin molded product, a lock having an engaging portion 40 and the like that will be elastically deformed, which will be described later, using the flexibility unique to the resin. Since the mechanism which comprises the box 10, such as the mechanism 16, can be operated smoothly, it is desirable. The outer box 18, the inner box 20, and the main body heat insulating material 22 are all formed in a box shape opened upward. The box main body 12 has a main body heat insulating material 22 whose outer shape is set according to the inside of the outer box 18 and fits inside the outer box 18 without a gap, and an inner shape whose outer shape is set according to the inside of the main body heat insulating material 22. The box 20 fits inside the main body heat insulating material 22 without a gap. An upper part of the front wall of the outer box 18 is formed so as to project forward from a main body part in which the main body heat insulating material 22 is accommodated, and to open upward in an outer box setting part 24 in which the components of the lock mechanism 16 are provided. Yes. In addition, an inner box installation in which a flange portion 20a extending outward is formed at the upper end of the inner box 20, and the components of the lock mechanism 16 are provided to project forward from the front edge of the flange portion 20a. A portion 26 is formed. In the box body 12, the flange portion 20 a of the inner box 20 overlaps the upper end of the main body heat insulating material 22 and the upper end of the outer box 18. The inner box installation part 26 formed in accordance with the upper opening of the outer box installation part 24 overlaps the upper opening and closes the upper opening, and between the outer box installation part 24 and the inner box installation part 26. A partition 27 is defined. The partition portion 27 is a space surrounded by the outer box setting portion 24 and the inner box setting portion 26, and includes a first engagement protrusion 40a and a second engagement protrusion 40b, which will be described later, in this space area. The engaging portion 40 operates in conjunction with the vertical movement of the lock member 38.

図１(ｂ)および図４に示すように、蓋体１４は、該蓋体１４の外郭をなす外蓋部２８と、この外蓋部２８の内側に配置され、スチレン系発泡体などからなる蓋断熱材３０と、蓋断熱材３０の内側に配置され、チラシなどの書類を蓋断熱材３０との間に挟んで保持し得るホルダー部３２とを備えている。外蓋部２８およびホルダー部３２は、ポリプロピレン(ＰＰ)などの樹脂成形品である。蓋体１４は、外蓋部２８の後縁に一体成形されたホルダー部３２を、外蓋部２８との間に設けたインテグラルヒンジで内側に折り曲げて、外蓋部２８の爪で保持された蓋断熱材３０を挟んで外蓋部２８の内側に配置している。蓋体１４は、外蓋部２８の外周縁が下方へ延出するよう形成され、閉じ姿勢とした際に、箱本体１２の上部が外蓋部２８の外周縁内側に嵌まると共に、箱本体１２の上端面をなすフランジ部２０ａと蓋断熱材３０とが当接する。図７に示すように、蓋体１４には、外蓋部２８の前縁に、ロック機構１６の構成要素が設けられる蓋設置部３４が前方へ張り出すように形成されている。箱体１０は、蓋体１４を閉じ姿勢とした際に、蓋設置部３４が箱本体１２の内箱設置部２６の上面を覆うと共に、外箱設置部２４および内箱設置部２６が蓋設置部３４の内側に嵌まり込むように構成される(図４および図５参照)。蓋体１４には、蓋設置部３４の前壁から下方へ延出する開閉操作片３６が形成され、閉じ姿勢とした際に、開閉操作片３６に貫通形成された掛止開口３６ａに、箱本体１２における外箱設置部２４の前壁に突設された掛止突起２４ａが嵌まる(図１(ａ)参照)。そして、蓋体１４は、ロック機構１６をロック解除した状態で開閉操作片３６を手前に引っ張れば、開閉操作片３６が弾性変形して掛止突起２４ａが掛止開口３６ａから簡単に外れて開放可能となる。 As shown in FIGS. 1B and 4, the lid body 14 includes an outer lid portion 28 that forms an outline of the lid body 14, and is disposed inside the outer lid portion 28, and is made of a styrene-based foam or the like. The cover heat insulating material 30 and the holder part 32 which is arrange | positioned inside the cover heat insulating material 30 and can hold | maintain documents, such as a leaflet, between the cover heat insulating materials 30 are provided. The outer lid portion 28 and the holder portion 32 are resin molded products such as polypropylene (PP). The lid body 14 is held by a claw of the outer lid portion 28 by bending the holder portion 32 integrally formed at the rear edge of the outer lid portion 28 with an integral hinge provided between the lid 14 and the inner lid 28. Further, it is arranged inside the outer lid portion 28 with the lid heat insulating material 30 interposed therebetween. The lid body 14 is formed so that the outer peripheral edge of the outer lid portion 28 extends downward. When the lid body 14 is in the closed posture, the upper portion of the box body 12 fits inside the outer peripheral edge of the outer lid portion 28, and the box body The flange part 20a which makes 12 upper end surfaces, and the lid | cover heat insulating material 30 contact | abut. As shown in FIG. 7, the lid 14 is formed on the front edge of the outer lid portion 28 so that a lid installation portion 34 provided with the components of the lock mechanism 16 projects forward. In the box 10, when the lid 14 is closed, the lid installation unit 34 covers the upper surface of the inner box installation unit 26 of the box body 12, and the outer box installation unit 24 and the inner box installation unit 26 are installed on the lid. It is comprised so that it may fit inside the part 34 (refer FIG. 4 and FIG. 5). An opening / closing operation piece 36 extending downward from the front wall of the lid installation portion 34 is formed in the lid body 14. When the lid 14 is in the closed position, a box opening 36 a penetrating the opening / closing operation piece 36 is formed in a box. A latching protrusion 24a projecting from the front wall of the outer box setting portion 24 in the main body 12 is fitted (see FIG. 1A). Then, when the opening / closing operation piece 36 is pulled forward while the lock mechanism 16 is unlocked, the lid 14 is elastically deformed and the latching protrusion 24a is easily detached from the latching opening 36a and opened. It becomes possible.

図４および図５に示すように、ロック機構１６は、蓋体１４の蓋設置部３４に取り付けられ、ロック解除位置とこのロック解除位置より下降したロック位置との間で昇降可能なロック部材３８と、蓋設置部３４に設けられ、ロック部材３８の昇降により弾性変形する係合部４０とを備えている。また、ロック機構１６は、箱本体１２の内箱設置部２６に設けられ、ロック位置にあるロック部材３８により弾性変形した係合部４０と係合する係合受部４２を備えている。そして、ロック機構１６は、蓋体１４側の係合部４０と箱本体１２側の係合受部４２とが引っ掛かることで、閉じ姿勢で蓋体１４の開放を規制する(図５(ａ)参照)。更に、ロック機構１６は、箱本体１２の外箱設置部２４に昇降可能に設けられ、ロック位置にあるロック部材３８をロック解除位置に向けて押し上げ可能な解除部材４４を備えている(図３および図５(ｂ)参照)。実施例のロック機構１６は、ロック部材３８をロック解除位置からロック位置に下降させる操作を行わない限り、蓋体１４をロックすることはなく、専用の鍵などの別部材を用いることなく、解除部材４４を上昇操作するだけでロック解除可能である。 As shown in FIGS. 4 and 5, the lock mechanism 16 is attached to the lid installation portion 34 of the lid body 14, and can be moved up and down between the lock release position and the lock position lowered from the lock release position. And an engaging portion 40 that is provided in the lid installing portion 34 and elastically deforms when the lock member 38 is raised and lowered. The lock mechanism 16 includes an engagement receiving portion 42 that is provided in the inner box installation portion 26 of the box body 12 and engages with the engagement portion 40 that is elastically deformed by the lock member 38 at the lock position. Then, the lock mechanism 16 regulates the opening of the lid body 14 in the closed position by the engagement portion 40 on the lid body 14 side and the engagement receiving portion 42 on the box body 12 side being hooked (FIG. 5A). reference). Further, the lock mechanism 16 includes a release member 44 that can be moved up and down in the outer box installation portion 24 of the box body 12 and can push up the lock member 38 in the lock position toward the lock release position (FIG. 3). And FIG. 5 (b)). The lock mechanism 16 of the embodiment does not lock the lid 14 and does not use another member such as a dedicated key unless the operation of lowering the lock member 38 from the unlock position to the lock position is performed. The lock can be released simply by raising the member 44.

図７および図８に示すように、ロック部材３８は、蓋体１４の外側(上面)に臨むロック操作部４６と、このロック操作部４６の下面から下方へ延出するように形成され、蓋体１４の内側に臨むロック本体部４８と、このロック本体部４８と並んでロック操作部４６の下面から下方へ延出するように形成された制動部５０とを備えている。なお、ロック部材３８は、ポリプロピレン(ＰＰ)などの樹脂成形品が用いられている。ロック操作部４６は、左右方向に長い平板状に形成され、左右方向中央部に柱状のロック本体部４８が配置されている。ロック本体部４８には、前壁下部がそれより上部分よりも後方に凹んで、前壁下側に偏倚した部位に係合段部４８ａが設けられている(図４および図５参照)。なお、ロック本体部４８は、制動部５０よりも長く下方へ延びている。制動部５０は、ロック本体部４８を左右に挟んで２つ設けられ、各制動部５０は、少なくとも先端部がロック本体部４８に対して接離する方向(左右方向)へ弾性変形可能に構成されている。左右の制動部５０,５０は、下部に互いに反対向きに延出する抜止爪５０ａを有し、ロック本体部４８を挟んで左右対称な形状となっている。ロック部材３８は、ロック本体部４８と制動部５０との間に、制動部５０の弾性変形を調節する変形調節部５２を備えている。変形調節部５２は、ロック操作部４６の下面に連なる板状部分であり、ロック本体部４８および制動部５０の根元部分に形成されている。 As shown in FIGS. 7 and 8, the lock member 38 is formed so as to face the outside (upper surface) of the lid body 14 and to extend downward from the lower surface of the lock operation portion 46. A lock main body 48 facing the inside of the body 14 and a braking part 50 formed so as to extend downward from the lower surface of the lock operation unit 46 along with the lock main body 48 are provided. The lock member 38 is a resin molded product such as polypropylene (PP). The lock operation portion 46 is formed in a flat plate shape that is long in the left-right direction, and a columnar lock main body portion 48 is disposed in the center portion in the left-right direction. The lock main body 48 is provided with an engaging step 48a at a portion where the lower part of the front wall is recessed rearward from the upper part and is biased to the lower side of the front wall (see FIGS. 4 and 5). Note that the lock main body 48 extends downward longer than the braking portion 50. Two braking portions 50 are provided with the lock main body 48 sandwiched between the left and right sides, and each braking portion 50 is configured to be elastically deformable in a direction (left-right direction) in which at least a distal end portion is in contact with or separated from the lock main body portion 48. Has been. The left and right braking parts 50, 50 have retaining claws 50 a that extend in opposite directions at the lower part, and have a bilaterally symmetrical shape with the lock main body part 48 interposed therebetween. The lock member 38 includes a deformation adjustment unit 52 that adjusts the elastic deformation of the brake unit 50 between the lock main body 48 and the brake unit 50. The deformation adjusting portion 52 is a plate-like portion that is continuous with the lower surface of the lock operation portion 46, and is formed at the base portions of the lock main body portion 48 and the braking portion 50.

図１(ａ)に示すように、ロック部材３８は、外蓋部２８の前縁中央に設けられた蓋設置部３４に設置されている。蓋設置部３４には、ロック操作部４６の外形に合わせた開口形状で上方に開放する凹状に形成された収納凹部５４が設けられ、この収納凹部５４の底にロック設置口５６が上下に貫通するように形成されている(図７参照)。ロック部材３８は、ロック本体部４８および一対の制動部５０,５０をロック設置口５６に通すと共に、ロック操作部４６を収納凹部５４に嵌め合わせて設置され、ロック操作部４６が収納凹部５４より上側に出っ張るロック解除位置(図２(ａ)および図４(ｂ))と、ロック操作部４６が収納凹部５４に収まるロック位置(図２(ｂ)および図５(ａ))との間で昇降する。ここで、ロック部材３８は、ロック位置とした際に、収納凹部５４に収まったロック操作部４６の上面と蓋体１４の上面とが揃い、ロック操作部４６を指先でつまめないようにしてある。また、ロック部材３８は、ロック解除位置で両制動部５０,５０の抜止爪５０ａ,５０ａがロック設置口５６の開口縁下面に引っ掛かり、ロック解除位置を越えた上方変位が規制される。更に、ロック部材３８は、左右の制動部５０,５０がロック設置口５６の左右の開口縁に弾力的に当接することで生じる抵抗により、ロック解除位置からロック位置に向けたロック操作時に適度な操作感を与えると共に、ロック解除位置で停止状態を保つように補助している。ここで、ロック部材３８は、ロック解除位置で制動部５０の変形を規制する変形調節部５２の下部がロック設置口５６にわずかに重なる一方で、ロック位置で変形調節部５２がロック設置口５６に重なるように設定され、ロック解除位置側よりもロック位置側で抵抗を大きくしてある(図８参照)。ロック部材３８は、ロック操作部４６の左右方向中央部に開口する引掛口５３を備え、解除具５８の先端を引掛口５３から挿入して、解除具５８の先端に形成された鉤５８ａを引掛口５３の後側開口縁に引っ掛けてロック位置からロック解除位置に向けて強制的に持ち上げ可能になっている(図５(ｂ)参照)。 As shown in FIG. 1A, the lock member 38 is installed in a lid installation portion 34 provided at the center of the front edge of the outer lid portion 28. The lid installation portion 34 is provided with a storage recess 54 formed in a concave shape that opens upward in accordance with the outer shape of the lock operation portion 46, and the lock installation port 56 penetrates vertically in the bottom of the storage recess 54. (See FIG. 7). The lock member 38 is installed by passing the lock main body portion 48 and the pair of braking portions 50, 50 through the lock installation port 56 and fitting the lock operation portion 46 into the storage recess 54. Between the unlocking position (FIGS. 2 (a) and 4 (b)) protruding upward and the locking position (FIG. 2 (b) and FIG. 5 (a)) where the lock operating portion 46 is received in the storage recess 54. Go up and down. Here, when the lock member 38 is set to the lock position, the upper surface of the lock operation portion 46 and the upper surface of the lid body 14 that are accommodated in the storage recess 54 are aligned so that the lock operation portion 46 is not pinched with a fingertip. . Further, the locking member 38 is prevented from being displaced upwardly beyond the unlocking position by the retaining claws 50a, 50a of the braking portions 50, 50 being caught on the lower surface of the opening edge of the lock installation port 56 at the unlocking position. Further, the lock member 38 is suitable for a locking operation from the unlocked position to the locked position due to the resistance generated when the left and right braking parts 50, 50 elastically contact the left and right opening edges of the lock installation port 56. It gives a feeling of operation and assists in maintaining a stop state at the unlocked position. Here, in the lock member 38, the lower part of the deformation adjustment unit 52 that restricts deformation of the braking unit 50 at the unlock position slightly overlaps the lock installation port 56, while the deformation adjustment unit 52 is locked at the lock position. The resistance is set larger on the lock position side than on the lock release position side (see FIG. 8). The locking member 38 includes a hooking port 53 that opens at the center in the left-right direction of the lock operation unit 46, and the tip of the release tool 58 is inserted through the hooking port 53 to hook a hook 58 a formed at the tip of the release tool 58. It can be forcibly lifted from the locked position toward the unlocked position by being hooked on the rear opening edge of the mouth 53 (see FIG. 5B).

図７および図８に示すように、蓋設置部３４には、収納凹部５４の下側に保持部材６０が取り付けられ、この保持部材６０によってロック部材３８を所定の経路で昇降させるよう補助している。保持部材６０は、上方に開放する略トレイ状に形成された例えばポリプロピレン(ＰＰ)などからなる樹脂成形品であり、左右の制動部５０,５０よりも外側で収納凹部５４の底に引っ掛かる爪６０ａによる係合構造により外蓋体２８に取り付けられている。保持部材６０の左右中央部には、後側部分がロック本体部４８の外形に合わせて形成されたロック保持口６２が設けられている。ロック部材３８は、ロック設置口５６から下方へ延出するロック本体部４８が保持部材６０のロック保持口６２の後側部分を通って、ロック保持口６２からロック本体部４８が下方へ延出して、蓋体１４の内側に臨んでいる。また、ロック部材３８は、ロック設置口５６から下方へ延出する左右の制動部５０,５０が保持部材６０で覆われて、蓋体１４の内側から制動部５０にアクセスしてロック部材３８を取り外すことが困難にしてある。 As shown in FIGS. 7 and 8, a holding member 60 is attached to the lid installation portion 34 below the storage recess 54, and the holding member 60 assists in raising and lowering the lock member 38 along a predetermined path. Yes. The holding member 60 is a resin molded product made of, for example, polypropylene (PP) formed in a substantially tray shape that opens upward, and a claw 60a that is caught on the bottom of the storage recess 54 outside the left and right braking parts 50, 50. It is attached to the outer lid body 28 by the engagement structure. A lock holding port 62 whose rear side portion is formed in accordance with the outer shape of the lock main body portion 48 is provided at the left and right center portion of the holding member 60. In the lock member 38, the lock main body 48 extending downward from the lock installation port 56 passes through the rear side portion of the lock holding port 62 of the holding member 60, and the lock main body 48 extends downward from the lock holding port 62. Facing the inside of the lid body 14. Further, the locking member 38 has left and right braking portions 50, 50 extending downward from the lock installation port 56 covered with a holding member 60, and the locking member 38 is accessed by accessing the braking portion 50 from the inside of the lid body 14. It is difficult to remove.

図４(ｂ)および図５に示すように、係合部４０は、蓋設置部３４における収納凹部５４の下面から下方へ延出するように、外蓋部２８と一体形成されている。係合部４０は、収納凹部５４に開口するロック設置口５６における前側開口縁の左右方向中央部に設けられ、ロック設置口５６を通るロック部材３８のロック本体部４８の前側に隣り合うように配置されている。係合部４０は、ロック保持口６２の前側部分を通って保持部材６０の下側に延出して、蓋体１４の内側に臨んでいる。係合部４０の下端部には、後方(ロック本体部４８側)へ向けて突出する第１係合突起４０ａと、前方(ロック本体部４８と反対側)へ突出する第２係合突起４０ｂとが設けられている。第１係合突起４０ａは、ロック部材３８のロック本体部４８が当たる上面が、根元から先端(前から後)に向かうにつれて下方傾斜するように形成されると共に、第２係合突起４０ｂよりも大きく突出している。また、係合部４０は、ロック解除位置からロック位置に向かうロック部材３８の移動経路に重なってロック部材３８をロック解除位置で支持する係合解除位置(図４(ａ))と、ロック位置にあるロック部材３８に押されてロック部材３８の移動経路から退避する係合位置(図５(ａ))との間で弾性変形可能に構成される。係合部４０は、ロック本体部４８と接離する方向である前後方向へ弾性変形可能に形成され、力がかかっていない自然な状態でロック解除位置になるように設定されている。より具体的には、係合部４０は、ロック解除位置にある際に、ロック本体部４８の前壁に沿って延在すると共に第１係合突起４０ａがロック本体部４８の係合段部４８ａの下側に重なり、第１係合突起４０ａに引っ掛かる係合段部４８ａを支持する。また、係合部４０は、ロック解除位置からロック部材３８が下降する際に、ロック本体部４８の前壁に第１係合突起４０ａが押し退けられて前側へ傾くように変形する。 As shown in FIGS. 4B and 5, the engaging portion 40 is integrally formed with the outer lid portion 28 so as to extend downward from the lower surface of the storage recess 54 in the lid installation portion 34. The engagement portion 40 is provided at the center in the left-right direction of the front opening edge of the lock installation port 56 that opens to the storage recess 54, and is adjacent to the front side of the lock main body 48 of the lock member 38 that passes through the lock installation port 56. Has been placed. The engaging portion 40 extends to the lower side of the holding member 60 through the front portion of the lock holding port 62 and faces the inside of the lid body 14. At the lower end of the engaging portion 40, a first engaging protrusion 40a that protrudes rearward (on the lock main body portion 48 side) and a second engaging protrusion 40b that protrudes forward (on the opposite side to the lock main body portion 48). And are provided. The first engagement protrusion 40a is formed such that the upper surface with which the lock main body portion 48 of the lock member 38 contacts is inclined downward from the base toward the tip (front to rear), and more than the second engagement protrusion 40b. It protrudes greatly. The engaging portion 40 overlaps the movement path of the locking member 38 from the unlocking position to the locking position and supports the locking member 38 at the unlocking position (FIG. 4A), and the locking position. And an engagement position (FIG. 5A) that is pushed by the lock member 38 and retracts from the movement path of the lock member 38. The engaging portion 40 is formed so as to be elastically deformable in the front-rear direction, which is a direction in contact with and away from the lock main body portion 48, and is set to be in the unlocked position in a natural state where no force is applied. More specifically, the engagement portion 40 extends along the front wall of the lock main body portion 48 when the engagement portion 40 is in the unlocked position, and the first engagement protrusion 40 a is an engagement step portion of the lock main body portion 48. It overlaps with the lower side of 48a, and supports the engagement step part 48a caught on the 1st engagement protrusion 40a. Further, when the locking member 38 is lowered from the unlocking position, the engaging portion 40 is deformed so that the first engaging protrusion 40a is pushed away from the front wall of the lock main body portion 48 and tilts forward.

図４(ｂ)および図５に示すように、係合受部４２は、内箱２０の前縁に形成された内箱設置部２６に設けられている。内箱設置部２６には、該内箱設置部２６の上面から貫通する筒状に形成されたロック挿入部６４が、蓋体１４の閉じ姿勢時にロック本体部４８および係合部４０に対応する位置に設けられている。ロック挿入部６４は、ロック本体部４８および係合部４０を挿入可能な開口寸法に設定されると共に、下端が、外箱設置部２４および内箱設置部２６に囲われて収納室１２ａおよび外部と区画された区画部２７に開口している。ロック本体部４８および係合部４０は、蓋体１４を閉じ姿勢とした際に、ロック挿入部６４を通って、ロック挿入部６４の下端から突き出た下部が区画部２７に位置する。係合受部４２は、係合部４０の係合解除位置から係合位置へ向けた変形方向前側に位置するロック挿入部６４の前壁下端に設けられ、係合位置でロック挿入部６４の下部開口の下側に位置する係合部４０と上下に重ならず、係合位置に弾性変形した係合部４０の第２係合突起４０ｂの上側に重なるように配置される。図４(ｂ)は、蓋体１４が開放可能な状態を示す。このとき、ロック部材３８がロック解除位置にあると共に係合部４０が係合解除位置にあって、第１係合突起４０ａは、ロック本体部４８の係合段部４８ａに接触する一方、第２係合突起４０ｂと係合受部４２とは離れた位置にある。従って、蓋体１４は、掛止開口３６ａと掛止突起２４ａとの嵌合のみによって、箱本体１２に対して係止されている。そのため、開閉操作片３６を箱体１０の前方に撓ませ、掛止突起２４ａと掛止開口３６ａの嵌合を外せば、蓋体１４は容易に開放できる。そして、蓋体１４を開放する際、ロック部材３８は蓋設置部３４に収納されたまま、蓋体１４と共に移動する。図５(ａ)は、蓋体１４がロックされている状態を示す。このとき、ロック本体部４８が押下げられており、係合部４０が箱体１０の前方に撓み、第２係合突起４０ｂが係合受部４２に係止されて蓋体１４の解放を規制している。 As shown in FIGS. 4B and 5, the engagement receiving portion 42 is provided in the inner box installation portion 26 formed at the front edge of the inner box 20. A lock insertion portion 64 formed in a cylindrical shape penetrating from the upper surface of the inner box installation portion 26 corresponds to the lock main body portion 48 and the engagement portion 40 when the lid body 14 is closed. In the position. The lock insertion portion 64 is set to have an opening size into which the lock main body portion 48 and the engagement portion 40 can be inserted, and the lower end is surrounded by the outer box setting portion 24 and the inner box setting portion 26 so that the storage chamber 12a and the outside It is opened in the partitioned section 27 partitioned. The lock main body 48 and the engaging portion 40 pass through the lock insertion portion 64 and the lower portion protruding from the lower end of the lock insertion portion 64 is positioned in the partition portion 27 when the lid body 14 is in the closed posture. The engagement receiving portion 42 is provided at the lower end of the front wall of the lock insertion portion 64 located on the front side in the deformation direction from the engagement release position of the engagement portion 40 to the engagement position. It is arranged so as not to overlap vertically with the engaging portion 40 located below the lower opening but to overlap the upper side of the second engaging protrusion 40b of the engaging portion 40 elastically deformed to the engaging position. FIG. 4B shows a state in which the lid 14 can be opened. At this time, the lock member 38 is in the unlock position and the engaging portion 40 is in the disengaged position, and the first engaging protrusion 40a contacts the engaging step portion 48a of the lock main body portion 48, while 2 The engagement protrusion 40b and the engagement receiving part 42 are in positions separated from each other. Accordingly, the lid body 14 is locked to the box body 12 only by fitting between the latching opening 36a and the latching protrusion 24a. Therefore, the lid 14 can be easily opened by bending the opening / closing operation piece 36 forward of the box 10 and removing the engagement between the latching protrusion 24a and the latching opening 36a. When the lid body 14 is opened, the lock member 38 moves together with the lid body 14 while being stored in the lid installation portion 34. FIG. 5A shows a state where the lid 14 is locked. At this time, the lock main body portion 48 is pushed down, the engaging portion 40 bends forward of the box body 10, and the second engaging protrusion 40 b is locked to the engaging receiving portion 42 to release the lid body 14. It is regulated.

図１０〜図１２に示すように、外箱１８における外箱設置部２４の底には、下方へ開放する凹状に形成された設置凹部６６が後側に偏倚して設けられている。設置凹部６６には、蓋体１４の閉じ姿勢でロック挿入部６４を介して区画部２７に臨むロック部材３８におけるロック本体部４８の下端面に対向するように、解除部材４４が昇降可能に取り付けられている。図９に示すように、解除部材４４は、左右に長い板状の解除操作部４４ａの上面から上方へ突出するよう形成されて、左右に離間配置された一対の取付部６８,６８と、一対の取付部６８,６８の間に位置して、解除操作部４４ａの上面から突出するよう形成された作動制御部７０とを備えている。解除部材４４は、上端部に互いに反対向きに延出する鉤状の取付爪６８ａを有する両取付部６８,６８および解除操作部４４ａが、左右対称な形状で形成されている。作動制御部７０は、解除操作部４４ａの長手辺の一方に沿って立ち上がる板状部分である。すなわち、解除部材４４は、上下の軸回りに反転することで、作動制御部７０を解除操作部４４ａの前縁に配置した向き(作動向き)と、作動制御部７０を解除操作部４４ａの後縁に配置した向き(不作動向き)とに切り替え可能になっている。 As shown in FIGS. 10 to 12, an installation recess 66 formed in a concave shape that opens downward is provided on the bottom of the outer box installation portion 24 in the outer box 18 so as to be biased to the rear side. The release member 44 is attached to the installation recess 66 so as to be movable up and down so as to face the lower end surface of the lock main body portion 48 of the lock member 38 facing the partition portion 27 through the lock insertion portion 64 with the lid 14 closed. It has been. As shown in FIG. 9, the release member 44 is formed so as to protrude upward from the upper surface of a plate-like release operation portion 44 a that is long to the left and right, and a pair of attachment portions 68 and 68 that are spaced apart from each other left and right. And an operation control unit 70 formed so as to protrude from the upper surface of the release operation unit 44a. In the release member 44, both attachment portions 68 and 68 having a hook-like attachment claw 68a extending in opposite directions at the upper end portion and the release operation portion 44a are formed in a symmetrical shape. The operation control unit 70 is a plate-like portion that rises along one of the longitudinal sides of the release operation unit 44a. That is, the release member 44 is inverted around the vertical axis so that the operation control unit 70 is disposed at the front edge of the release operation unit 44a (operation direction), and the operation control unit 70 is moved to the rear of the release operation unit 44a. It is possible to switch to the direction arranged at the edge (non-operational direction).

図１１および図１２に示すように、解除部材４４は、設置凹部６６の天井面に左右に離間して上下に貫通形成された一対の取付口７２に取付部６８をそれぞれ嵌め合わせて、外箱設置部２４の底に着脱可能に取り付けられる。また、解除部材４４は、上下の軸回りに反転して、作動向き(図１１(ａ)および(ｂ)、図１２(ａ)および(ｂ))および不作動向き(図１１(ｃ)および図１２(ｃ))の何れの前後向きでも設置凹部６６に取り付け可能である。そして、解除部材４４は、力がかかっていない自然な状態において、取付口７２を介して区画部２７に臨む取付爪６８ａが取付口７２の開口縁に引っ掛かって自重により下降位置で保持される(図１１(ａ)および図１２(ａ)参照)。解除部材４４は、下降位置において設置凹部６６の内側に収まって、解除部材４４の存在が判り難くしてある。 As shown in FIGS. 11 and 12, the release member 44 is formed by fitting the mounting portions 68 to a pair of mounting ports 72 that are formed to penetrate the ceiling surface of the installation recess 66 from the left and right and vertically. It is detachably attached to the bottom of the installation part 24. In addition, the release member 44 is reversed around the vertical axis to be operated (FIGS. 11A and 11B, FIGS. 12A and 12B) and inactive (FIGS. 11C and 11C). It can be attached to the installation recess 66 in any of the front and rear directions in FIG. Then, in a natural state where no force is applied, the release member 44 is held at the lowered position by its own weight when the attachment claw 68a facing the partition portion 27 via the attachment port 72 is caught by the opening edge of the attachment port 72 ( (See FIG. 11 (a) and FIG. 12 (a)). The release member 44 is accommodated inside the installation recess 66 in the lowered position, and the presence of the release member 44 is difficult to understand.

図１１(ａ),(ｂ)および図１２(ａ),(ｂ)に示すように、解除部材４４は、作動向きで設置凹部６６に取り付けた際に、作動制御部７０が設置凹部６６の天井面に左右の取付口７２,７２の間に設けられた挿通口７４の前側部分に相対すると共に、解除操作部４４ａが挿通口７４を介して区画部２７に挿入されたロック本体部４８の下端面に相対する。ここで、挿通口７４は、前側部分の左右幅が作動制御部７０の左右幅よりも大きく形成され、作動向きで取り付けた解除部材４４の作動制御部７０が挿通口７４の前側部分に挿入可能になっている。解除部材４４は、作動向きで設置凹部６６に取り付けた際に、作動制御部７０が挿通口７４の前側部分を通ることで上昇が許容され、下降位置から上昇位置へ向けた押し上げ操作が可能となる。すなわち、解除部材４４は、作動向きで取り付けることで、ロック位置で挿通口７４を通って設置凹部６６の内側(外箱設置部２４の下側)に臨むロック部材３８のロック本体部４８を、ロック解除位置に向けて押し上げてロック解除することが可能となる。 As shown in FIGS. 11A and 11B and FIGS. 12A and 12B, when the release member 44 is attached to the installation recess 66 in the operating direction, the operation control unit 70 can prevent the installation recess 66 from being installed. The lock main body 48 is opposed to the front portion of the insertion port 74 provided between the left and right attachment ports 72, 72 on the ceiling surface, and the release operation unit 44 a is inserted into the partition unit 27 through the insertion port 74. Relative to bottom edge. Here, the insertion port 74 is formed such that the left-right width of the front portion is larger than the left-right width of the operation control unit 70, and the operation control unit 70 of the release member 44 attached in the operation direction can be inserted into the front side portion of the insertion port 74. It has become. When the release member 44 is attached to the installation recess 66 in the operation direction, the operation control unit 70 passes through the front portion of the insertion port 74 and is allowed to rise, and can be pushed up from the lowered position to the raised position. Become. That is, the release member 44 is attached in the operating direction so that the lock main body portion 48 of the lock member 38 facing the inside of the installation recess 66 (below the outer box installation portion 24) through the insertion port 74 at the lock position, The lock can be released by pushing it up toward the unlock position.

図１０に示すように、挿通口７４は、後側部分の左右幅が作動制御部７０の左右幅よりも小さく形成されて、該後側部分における左右の開口縁の作動規制部７６,７６が、不作動向きで取り付けた解除部材４４の作動制御部７０に相対する。すなわち、解除部材４４は、不作動向きで設置凹部６６に取り付けた際に、作動制御部７０が作動規制部７６に阻まれて上昇が規制され、下降位置から上昇位置へ向けた押し上げ操作が不能となる(図１１(ｃ)および図１２(ｃ)参照)。従って、解除部材４４は、不作動向きで取り付けることで、ロック位置で挿通口７４を通って設置凹部６６の内側(外箱設置部２４の下側)に臨むロック部材３８のロック本体部４８を、ロック解除位置に向けて押し上げてロック解除することができない。このように、ロック機構１６は、解除部材４４を取り付ける向きに応じて、解除部材４４によるロック解除機能の有無を選択できる。なお、挿通口７４は、設置凹部６６に取り付けた解除部材４４によって、取り付け向きにかかわらず塞がれる。 As shown in FIG. 10, the insertion opening 74 is formed such that the left and right width of the rear portion is smaller than the left and right width of the operation control unit 70, and the operation restricting portions 76 and 76 at the left and right opening edges in the rear portion. This is opposed to the operation control unit 70 of the release member 44 attached in the non-operational direction. That is, when the release member 44 is attached to the installation recess 66 in a non-operational direction, the operation control unit 70 is blocked by the operation control unit 76 and the upward movement is restricted, and the push-up operation from the lowered position to the raised position is impossible. (See FIG. 11 (c) and FIG. 12 (c)). Accordingly, the release member 44 is attached in the non-operating direction so that the lock main body portion 48 of the lock member 38 facing the inside of the installation recess 66 (below the outer box installation portion 24) through the insertion port 74 at the lock position. It cannot be unlocked by pushing up toward the unlock position. Thus, the lock mechanism 16 can select whether or not the unlocking function is provided by the release member 44 according to the direction in which the release member 44 is attached. The insertion opening 74 is closed regardless of the mounting direction by the release member 44 attached to the installation recess 66.

〔実施例の作用〕
次に、実施例の作用について説明する。ロック機構１６は、ロック部材３８がロック解除位置にあって係合部４０が係合解除位置にある際に、係合部４０がロック挿入部６４の開口内に収まり、係合部４０およびロック本体部４８がロック挿入部６４に挿脱可能となる(図４(ｂ))。仮に蓋体１４を開いた状態でロック部材３８をロック位置にしたとしても、係合位置になった係合部４０が内箱設置部２６に干渉して蓋体１４を閉じることができず、使用者はロック部材３８がロック解除位置にないことが判る。なお、蓋体１４を開いた状態でロック部材３８をロック位置にしたとしても、蓋体１４の内側に突出するロック部材３８の下端部を押し上げるだけで簡単にロック解除位置に戻すことができる。また、ロック機構１６は、蓋体１４を閉じ姿勢としてロック部材３８をロック解除位置からロック位置へ向けて押すロック操作を行うことで、係合部４０が係合解除位置から係合位置へ向けて前側へ傾くように変形し、係合部４０の第２係合突起４０ｂが係合受部４２の下側に重なる。これにより、ロック機構１６は、蓋体１４を開き姿勢へ向けて持ち上げようとしても、係合部４０の第２係合突起４０ｂが係合受部４２に引っ掛かって係合部４０の上昇を規制することで、蓋体１４の開放を規制する(図５(ａ))。このように、ロック機構１６は、ロック部材３８をロック解除位置からロック位置に押すだけのロック操作により弾性変形した係合部４０と係合受部４２とが引っ掛かって蓋体１４をロックする簡単な構成である。また、ロック機構１６は、ロック部材３８をロック解除位置からロック位置に下降させる操作を行わない限り、蓋体１４を閉じ姿勢としてしまっても自然にロックがかかって蓋体１４を開けなくなることはない。すなわち、使用者が意図することなくロックがかかって蓋体１４をロックすることを防止でき、使い勝手を向上できる。 (Effects of Example)
Next, the operation of the embodiment will be described. When the locking member 38 is in the unlocking position and the engaging part 40 is in the disengaging position, the locking mechanism 16 is accommodated in the opening of the lock inserting part 64, and the engaging part 40 and the locking mechanism 16 are locked. The main body 48 can be inserted into and removed from the lock insertion part 64 (FIG. 4B). Even if the locking member 38 is set to the locked position with the lid 14 opened, the engaging portion 40 in the engaging position cannot interfere with the inner box installation portion 26 and close the lid 14. The user can see that the locking member 38 is not in the unlocked position. Even if the lock member 38 is set to the locked position with the lid 14 open, the lock member 38 can be easily returned to the unlocked position simply by pushing up the lower end portion of the lock member 38 protruding inside the lid 14. Further, the lock mechanism 16 performs a lock operation to push the lock member 38 from the unlock position to the lock position with the lid body 14 closed, so that the engaging portion 40 moves from the disengagement position to the engage position. The second engaging protrusion 40b of the engaging portion 40 overlaps the lower side of the engaging receiving portion 42. As a result, even if the lock mechanism 16 tries to lift the lid body 14 toward the open position, the second engagement protrusion 40b of the engagement portion 40 is caught by the engagement receiving portion 42 to restrict the rise of the engagement portion 40. By doing so, the opening of the lid body 14 is regulated (FIG. 5A). As described above, the lock mechanism 16 can easily lock the lid body 14 by the engagement portion 40 and the engagement receiving portion 42 that are elastically deformed by the lock operation by simply pushing the lock member 38 from the unlock position to the lock position. It is a simple configuration. Further, unless the lock mechanism 16 is operated to lower the lock member 38 from the unlock position to the lock position, the lock mechanism 16 is not locked and cannot be opened even if the lid 14 is closed. Absent. That is, it is possible to prevent the lid 14 from being locked due to the lock not intended by the user, and to improve usability.

前記ロック機構１６は、作動向きで取り付けた解除部材４４の解除操作部４４ａを押し上げ操作することで、ロック部材３８の下端に当たった解除操作部４４ａによりロック部材３８がロック位置からロック解除位置へ持ち上げられ、係合位置に弾性変形した係合部４０が自身の弾力により係合解除位置に戻る(図５(ｂ))。これにより、係合部４０と係合受部４２との係合が外れると共に、係合解除位置ににある係合部４０がロック挿入部６４の開口内に収まり、係合部４０およびロック本体部４８がロック挿入部６４から抜き出し可能となる。そして、ロック機構１６のロック解除により、蓋体１４の開放が許容される。このように、ロック機構１６は、解除部材４４の押し上げ操作によりロック部材３８をロック位置からロック解除位置に上昇させる簡単な構成でロックを解除できる。また、ロック機構１６は、解除部材４４が箱本体１２に予め組み込まれているので、別体の解除具を必要としない。すなわち、解除具を紛失するなどの不都合の発生もなく、蓋体１４を開閉するたびに解除具を用意する必要もないので、使い勝手をより向上することができる。 The lock mechanism 16 pushes up the release operation portion 44a of the release member 44 attached in the operating direction, so that the lock member 38 is moved from the lock position to the lock release position by the release operation portion 44a that hits the lower end of the lock member 38. The engaging portion 40 that has been lifted and elastically deformed to the engaging position returns to the disengaging position by its own elasticity (FIG. 5B). As a result, the engagement portion 40 and the engagement receiving portion 42 are disengaged from each other, and the engagement portion 40 in the disengagement position is accommodated in the opening of the lock insertion portion 64, so that the engagement portion 40 and the lock body The part 48 can be extracted from the lock insertion part 64. Then, the unlocking of the locking mechanism 16 allows the lid 14 to be opened. As described above, the lock mechanism 16 can release the lock with a simple configuration in which the lock member 38 is raised from the lock position to the lock release position by pushing up the release member 44. Moreover, since the release member 44 is previously incorporated in the box body 12, the lock mechanism 16 does not require a separate release tool. That is, there is no inconvenience such as losing the release tool, and it is not necessary to prepare the release tool each time the lid 14 is opened and closed, so that the usability can be further improved.

前記ロック機構１６は、解除部材４４を不作動向きで取り付けることで、解除操作部を押し上げ操作しても、作動制御部７０が設置凹部６６の作動規制部７６に当たって、ロック部材３８を押し上げることができなくなる。すなわち、ロック機構１６は、解除部材４４を作動向きから１８０°回転した不作動向きに付け替えるだけで、解除部材４４によるロック解除機能が働かないようにすることができる。ここで、ロック機構１６は、ロック位置にあるロック部材３８で係合部４０を係合位置に弾性変形するように押し退ける構成であるので、ロック機構１６の機能を知っている使用者であればロック部材３８の引掛口５３の開口縁に例えば図５(ｂ)に示すような解除具５８の鉤５８ａを引っ掛けて持ち上げるだけで、弾性変形していた係合部４０を係合解除位置に自然に復帰させて、ロックを解除することができる。このように、ロック機構１６は、解除部材４４を取り付ける向きに応じて、解除部材４４によるロック解除機能の有無を選択することができ、簡単な構成で製品のラインナップを増やすことなく機能に幅を持たせることができる。なお、解除具５８は、特に専用品であることは必須ではなく、引掛口５３の開口縁に引っ掛けてロック部材３８を持ち上げ可能であればよい。 The lock mechanism 16 can attach the release member 44 in a non-operational direction, so that even when the release operation unit is pushed up, the operation control unit 70 hits the operation restriction unit 76 of the installation recess 66 and pushes up the lock member 38. become unable. That is, the lock mechanism 16 can prevent the unlocking function by the release member 44 from functioning only by changing the release member 44 to the non-operation direction rotated by 180 ° from the operation direction. Here, since the lock mechanism 16 is configured to push away the engagement portion 40 so as to be elastically deformed to the engagement position by the lock member 38 at the lock position, the user knows the function of the lock mechanism 16. For example, by simply hooking and lifting the hook 58a of the release tool 58 as shown in FIG. 5B on the opening edge of the hook 53 of the lock member 38, the engagement portion 40 that has been elastically deformed is naturally moved to the engagement release position. The lock can be released by returning to. As described above, the lock mechanism 16 can select whether or not the lock release function is provided by the release member 44 according to the direction in which the release member 44 is attached, and has a wide range of functions without increasing the product lineup with a simple configuration. You can have it. Note that it is not essential that the release tool 58 is a special product, and it is sufficient that the lock member 38 can be lifted by being hooked on the opening edge of the hook 53.

前記ロック部材３８は、弾性変形可能な左右の制動部５０,５０が蓋体１４の設置凹部６６に設けられたロック設置口５６の開口縁に弾力的に当接する構成であるので、制動部５０とロック設置口５６との抵抗により、ロック部材３８を設置凹部６６の底から間をあけたロック解除位置から下降しないように保持するのを補助できる。また、制動部５０とロック設置口５６との抵抗により、ロック位置にあるロック部材３８が係合位置から係合解除位置に弾力的に戻ろうとする係合部４０に押されて、がたついたり、持ち上がったりするなどを防止できる。更に、制動部５０とロック設置口５６との当接によりかかる抵抗により、ロック部材３８のロック操作に際して、適度な操作感を与えることができる。しかも、ロック本体部４８と制動部５０との間に設けられた変形調節部５２によって制動部５０の弾性変形を調節しているので、ロック設置口５６と制動部５０との当接でロック部材３８に付与される抵抗を、ロック部材３８をロック解除位置でより確実に停止させるなど、適切な度合いにすることができる。 The lock member 38 is configured such that the left and right brake parts 50, 50 that can be elastically deformed elastically contact the opening edge of the lock installation port 56 provided in the installation recess 66 of the lid 14. And the resistance of the lock installation port 56 can assist in holding the lock member 38 so as not to descend from the unlocking position spaced from the bottom of the installation recess 66. Further, due to the resistance between the braking portion 50 and the lock installation port 56, the lock member 38 at the lock position is pushed by the engagement portion 40 that is elastically returned from the engagement position to the disengagement position. Or lifting. Further, the resistance applied by the contact between the braking portion 50 and the lock installation port 56 can provide an appropriate operational feeling when the lock member 38 is locked. In addition, since the elastic deformation of the braking portion 50 is adjusted by the deformation adjusting portion 52 provided between the lock main body portion 48 and the braking portion 50, the lock member is brought into contact with the lock installation port 56 and the braking portion 50. The resistance applied to 38 can be set to an appropriate degree, such as more reliably stopping the lock member 38 at the unlocked position.

前記箱体１０は、ロック部材３８をロック位置とした際に、ロック部材３８のロック操作部４６が蓋体１４の収納凹部５４に収まって、ロック操作部４６を指先でつまめなくなるから、ロック部材３８を無理矢理持ち上げる不正なロック解除を阻むことができる。また、箱体１０は、外箱１８の外箱設置部２４と内箱２０の内箱設置部２６とに囲われて、収容室１２ａおよび外部と区画された区画部２７内で、ロック機構１６の係合部４０と係合受部４２とが引っ掛かる構成であるから、外部から係合部４０および係合受部４２にアクセスすることができず、不正なロック解除を阻むことができる。箱体１０は、解除部材４４が箱本体１２の設置凹部６６内に収まる構成であるから、箱本体１２を下から見た場合を除いて前や横などから見ても解除部材４４があることを判り難くすることができる。箱体１０は、解除部材４４の解除操作部４４ａが該解除操作部４４ａの外形に合う開口形状の設置凹部６６内に収まると共に、取付部６８の取付爪６８ａが区画部２７内に配置されているので、外箱１８から内箱２０を取り外して外箱設置部２４の上部開口を開放しなければ、解除部材４４を取り外すことができない。すなわち、解除部材４４を外部から取り外して、挿通口７４から係合部４０またはロック本体部４８に不正にアクセスすることを防止できる。 When the lock member 38 is set to the lock position, the lock operation portion 46 of the lock member 38 is accommodated in the storage recess 54 of the lid body 14 and the lock operation portion 46 cannot be pinched with the fingertip. It is possible to prevent unauthorized unlocking by forcibly lifting 38. Further, the box body 10 is surrounded by the outer box setting portion 24 of the outer box 18 and the inner box setting portion 26 of the inner box 20, and within the compartment 27 separated from the storage chamber 12 a and the outside, the lock mechanism 16. Since the engaging portion 40 and the engaging receiving portion 42 are hooked, the engaging portion 40 and the engaging receiving portion 42 cannot be accessed from the outside, and unauthorized unlocking can be prevented. The box 10 has a configuration in which the release member 44 is accommodated in the installation recess 66 of the box body 12, and therefore the release member 44 is present even when viewed from the front or side except when the box body 12 is viewed from below. Can be difficult to understand. In the box 10, the release operation portion 44 a of the release member 44 is accommodated in an installation recess 66 having an opening shape that matches the outer shape of the release operation portion 44 a, and the attachment claws 68 a of the attachment portion 68 are disposed in the partition portion 27. Therefore, the release member 44 cannot be removed unless the inner box 20 is removed from the outer box 18 to open the upper opening of the outer box installation portion 24. That is, it is possible to prevent the release member 44 from being removed from the outside and illegally accessing the engaging portion 40 or the lock main body portion 48 from the insertion port 74.

(変更例)
前述した実施例に限らず、例えば以下のようにも変更可能である。
(１)実施例では断熱材を有する３層構造の箱本体を例示したが、１層の単層構造、２層または４層以上の複層構造であってもよい。
(２)実施例では断熱材を有する蓋体を例示したが、１層の単層構造、３層以上の複層構造であってもよい。 (Example of change)
For example, the present invention can be modified as follows.
(1) In the examples, a box body having a three-layer structure having a heat insulating material is exemplified, but a single-layer structure having one layer, two layers, or a multilayer structure having four or more layers may be used.
(2) In the examples, the lid having a heat insulating material is exemplified, but a single-layer structure having one layer and a multilayer structure having three or more layers may be used.

１０箱体，１２箱本体，１２ａ収容室，１４蓋体，１８外箱，２０内箱，
２４外箱設置部，２６内箱設置部，２７区画部，３８ロック部材，４０係合部，
４２係合受部，４４解除部材，４６ロック操作部，４８ロック本体部，
５０制動部，５２変形調節部，５６ロック設置口，６８取付部，
７０作動制御部，７２取付口，７４挿通口，７６作動規制部 10 box body, 12 box body, 12a accommodation room, 14 lid body, 18 outer box, 20 inner box,
24 outer box installation part, 26 inner box installation part, 27 partition part, 38 lock member, 40 engagement part,
42 engagement receiving portion, 44 release member, 46 lock operation portion, 48 lock body portion,
50 braking section, 52 deformation adjusting section, 56 lock installation port, 68 mounting section,
70 operation control unit, 72 mounting port, 74 insertion port, 76 operation regulating unit

Claims

A lock mechanism that locks the lid attached to the box body of the box so that it can be opened and closed in a closed position in which the opening of the box body is closed,
A lock member attached to the lid body, configured to be movable up and down between a lock release position and a lock position lowered from the lock release position, and moved to the lock position by a lock operation only by pressing downward from the lock release position ;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
A locking mechanism, comprising: an engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member to restrict the opening of the lid.

A lock mechanism that locks the lid attached to the box body of the box so that it can be opened and closed in a closed position in which the opening of the box body is closed,
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box main body and is hooked on the engagement portion elastically deformed to an engagement position by the lock member to restrict the opening of the lid;
Unlocking the lock member in the locked position by pushing up from the lowered position held by its own weight, located below the lock member of the lid body that is provided in the box body so as to be movable up and down and in the closed position and a release member for pushing up toward the position
A locking mechanism characterized by that .

The release member is detachably attached to the box body by fitting an attachment portion to an attachment port provided in the box body.
The release member passes an operation control unit provided on the upper surface of the release member through an insertion port provided in the box body, and an operation direction in which the lift from the lowered position is allowed, and a vertical axis from the operation direction. The lock mechanism according to claim 2, wherein the lock mechanism is configured to be able to be attached to a non-operation direction in which the operation control unit abuts on an operation control unit provided on the box body and the ascent from the lowered position is controlled. .

A lock mechanism that locks the lid attached to the box body of the box so that it can be opened and closed in a closed position in which the opening of the box body is closed,
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member to restrict the opening of the lid,
The locking member is
A lock operation unit arranged to be exposed on the outer surface of the lid;
A lock main body formed so as to extend downward from the lock operation portion, inserted into a lock installation port provided vertically through the lid body, and hitting the engagement portion at a lock position of a lock member;
Along with the lock body portion, the lock operation portion extends downward, and is formed so as to be elastically deformable in a direction contacting and separating from the lock body portion, and is inserted into the lock installation port and the lock installation port is opened. A braking portion that provides resistance to the lock member by contact with the edge;
A deformation adjusting portion that is provided between the lock main body portion and the braking portion and adjusts elastic deformation of the braking portion;
A locking mechanism characterized by that .

A box provided with a lock mechanism for locking a lid attached to the box body of the box so that it can be opened and closed in a closed posture with the opening of the box body closed ,
The locking mechanism is
A lock member attached to the lid body and capable of moving up and down between an unlock position and a lock position lowered from the unlock position;
An engagement release position that is provided on the lid and overlaps a movement path of the lock member from the lock release position toward the lock position, and is supported by the lock member at the lock position. An engaging portion that is elastically deformed between an engaging position retracted from a moving path of the lock member;
An engagement receiving portion that is provided on the box body and is hooked on the engagement portion that is elastically deformed to an engagement position by the lock member to restrict the opening of the lid,
The box body includes an outer box that forms an outline of the box body, and an inner box that is provided inside the outer box and defines a storage chamber that stores articles.
Formed in the inner box installation section in a compartment section surrounded by the outer box installation section provided in the outer box and the inner box installation section provided in the inner box and partitioned from the storage chamber and the outside The engagement receiving portion is disposed, and the engagement portion is inserted into the partition portion when the lid is closed,
The engagement portion that is pushed by the lock member in the partition portion and elastically deformed from the disengagement position to the engagement position is hooked in the partition portion, and the engagement portion is engaged by elasticity. A box configured to return from the position to the disengaged position.