JP6838896B2

JP6838896B2 - How to prevent the round case from falling

Info

Publication number: JP6838896B2
Application number: JP2016168710A
Authority: JP
Inventors: 裕樹赤塚; 高橋　巧; 巧高橋
Original assignee: Sanwa Shutter Corp
Current assignee: Sanwa Shutter Corp
Priority date: 2016-08-31
Filing date: 2016-08-31
Publication date: 2021-03-03
Anticipated expiration: 2036-08-31
Also published as: JP2018035548A

Description

本発明は丸ケースの下端の係止構造に係り、詳しくは、丸ケースの上端の係止状態が外れた場合であっても、丸ケースの落下を防止することができる丸ケースの下端の係止構造に関するものである。 The present invention relates to the locking structure of the lower end of the round case, and more specifically, the lower end of the round case can be prevented from falling even when the upper end of the round case is unlocked. It is related to the stop structure.

重量シャッター等のシャッターケースとして、いわゆる丸ケースが知られている（特許文献１）。丸ケースは、金属製板材を断面視弧状に湾曲して形成されたケース板からなり、湾曲させたケース板の上端部、下端部を、躯体に設けた上側ケース止め材、まぐさ近傍等に設けた下側ケース止め材にそれぞれ係止させることで取り付けられる。丸ケースの上下端部を係止させる際に、ケース板を上端部と下端部を近づける方向に弾性変形させ、弾性変形されたケース板が拡開する弾性力によって係止状態が保持される。 A so-called round case is known as a shutter case for a heavy-duty shutter or the like (Patent Document 1). The round case is made of a case plate formed by bending a metal plate material in a cross-sectional view arc shape, and the upper end and lower ends of the curved case plate are placed on the upper case stopper provided on the skeleton, near the forage, etc. It is attached by locking each of the provided lower case stoppers. When locking the upper and lower ends of the round case, the case plate is elastically deformed in the direction in which the upper end and the lower end are brought closer to each other, and the locked state is maintained by the elastic force that the elastically deformed case plate expands.

しかしながら、丸ケースの弾性力を超える振動が地震等の影響で作用した場合、あるいは、何らかの理由（丸ケースの取付時の施工性向上のため意図せず塑性変形させてしまう等）で丸ケースの弾性力が弱くなっている場合（この場合、上端の係止状態が外れやすくなっている）には、丸ケースの上端部の係止状態が外れてしまうおそれがある。丸ケースの上端部の係止状態が外れると丸ケースが保持されずに落下してしまうおそれがある。このような丸ケースの落下は極めて起こり難いと考えられるが、万が一に備えておくことが望ましい。 However, if vibrations that exceed the elastic force of the round case act due to the effects of an earthquake, etc., or for some reason (such as unintentional plastic deformation to improve workability when installing the round case), the round case When the elastic force is weak (in this case, the locked state of the upper end is easily released), the locked state of the upper end of the round case may be released. If the upper end of the round case is released from the locked state, the round case may fall without being held. It is considered extremely unlikely that such a round case will fall, but it is desirable to be prepared in case of emergency.

丸ケースの上端部が上側ケース止め材から外れることを防止するには、丸ケースの上端部と上側ケース止め材との係止部を螺子（メンテナンス時の取り外しを考慮して）で固定することが考えられるが、特に丸ケースのサイズが大きい場合には、丸ケースの取付（係止）後に上側ケース止め材まで作業者が手を届かせて作業することは困難であり（多くの場合天井内での作業となる）、高所作業であることも相俟って危険である。 To prevent the upper end of the round case from coming off the upper case stopper, fix the locking part between the upper end of the round case and the upper case stopper with a screw (considering removal during maintenance). However, especially when the size of the round case is large, it is difficult for the operator to reach the upper case stopper after mounting (locking) the round case (in many cases, the ceiling). It is dangerous because it is an internal work) and it is a work at a high place.

丸ケースの外側に受け部材を設置し、丸ケースの上端部が上側ケース止め材から外れても、丸ケースが受け部材に支持されることで、丸ケースの落下を防止することも考えられる。しかしながら、丸ケースの長手寸法は１０ｍを超えるものもあり、天井内の限られた空間（開閉機や他の周辺部品が存在する）において、丸ケースの落下を支持できる強度を備えた受け部材を設置することは困難である。また、天井外に受け部材を設置する場合には、外観を損ねてしまうことになる。
特開２００８−２９７８１４ It is also conceivable to install a receiving member on the outside of the round case, and even if the upper end of the round case comes off from the upper case stopper, the round case is supported by the receiving member to prevent the round case from falling. However, the longitudinal dimension of the round case may exceed 10 m, and in the limited space in the ceiling (there is a switch and other peripheral parts), a receiving member having the strength to support the fall of the round case is provided. It is difficult to install. Further, when the receiving member is installed outside the ceiling, the appearance is spoiled.
Japanese Patent Application Laid-Open No. 2008-297814

本発明は、ケース板の上側の係止状態が外れた場合にケース板の落下を防止することを目的とするものである。 An object of the present invention is to prevent the case plate from falling when the upper locked state of the case plate is released.

本発明が採用した技術手段は、
上下端部を係止させることで取り付けられる丸ケースの下端の係止構造であって、
前記丸ケースの下方の先端部位からなる下側係止部が係止する下側被係止部は、底部と、前記底部の第１側の上方に位置する上側被係止部と、前記底部の第２側の上方に位置する上側被当接部と、を有し、前記上側被係止部と前記上側被当接部との間の開口から前記下側係止部を受け入れるようになっており、
前記下側係止部は、丸ケースの上端が係止状態にある時には、第１の傾斜姿勢で少なくとも先端が前記底部に当接する第１の係止位置にあり、
前記下側係止部は、丸ケースの上端の係止状態が外れた時の当該丸ケースの挙動（変形・回転）に応じて前記先端が上方に移動することで、前記第１の傾斜姿勢から第２の傾斜姿勢に移動し、前記先端に近い第１部位の上面が前記上側被係止部に当接し、前記先端から遠い第２部位の下面が前記上側被当接部に当接する第２の係止位置をとる、
丸ケースの下端の係止構造、である。 The technical means adopted by the present invention is
It is a locking structure of the lower end of the round case that can be attached by locking the upper and lower ends.
The lower locked portion to which the lower locking portion formed of the lower tip portion of the round case is locked includes a bottom portion, an upper locked portion located above the first side of the bottom portion, and the bottom portion. It has an upper contacted portion located above the second side of the above, and receives the lower locked portion from the opening between the upper locked portion and the upper contacted portion. And
The lower locking portion is in the first locking position where at least the tip abuts the bottom in the first tilted posture when the upper end of the round case is in the locked state.
The lower locking portion moves upward according to the behavior (deformation / rotation) of the round case when the upper end of the round case is released from the locked state, so that the first inclined posture is obtained. The upper surface of the first portion near the tip abuts on the upper locked portion, and the lower surface of the second portion far from the tip abuts on the upper locked portion. Take the locking position of 2,
It is a locking structure at the lower end of the round case.

１つの態様では、前記上側被当接部の上面の高さ位置は、前記上側被係止部の下面の高さ位置よりも高いことで、前記第２の傾斜姿勢が得られる。 In one embodiment, the height position of the upper surface of the upper contacted portion is higher than the height position of the lower surface of the upper locked portion, so that the second inclined posture can be obtained.

１つの態様では、前記丸ケースは、弧状部と、前記弧状部の上側に一体形成された上側傾斜部と、前記弧状部の下側に一体形成された下側傾斜部と、を備え、
前記下側係止部は、前記下側傾斜部の先端部位から形成されており、
前記下側被係止部は、前記底部と、前記底部の第１側から立ち上がる第１立ち上がり辺と、前記底部の第２側から立ち上がる第２立ち上がり辺と、前記第１立ち上がり辺の上端に形成された前記上側被係止部と、前記第２立ち上がり辺の上端に形成された前記上側被当接部と、からなる。
後述する実施形態では、前記下側被係止部（下側ケース止め材）は、水平状の底辺と、前記水平辺の第１側の第１垂直辺と、前記水平辺の第２側の第２垂直辺と、前記第１垂直辺の上端から第２側に延びる第１上側水平辺と、前記第２垂直辺の上端から第１側に延びる第２上側水平辺と、からなり、前記第１上側水平辺が前記上側被係止部、前記第２上側水平辺が前記上側被当接部を形成している。この場合、前記下側被係止部（下側ケース止め材）として、いわゆるリップ溝形鋼（Ｃ形鋼）を採用することができ、ＪＩＳ規格品の標準鋼材を採用することができ、別途下側被係止部を製造する必要がない。 In one embodiment, the round case comprises an arc-shaped portion, an upper inclined portion integrally formed on the upper side of the arc-shaped portion, and a lower inclined portion integrally formed on the lower side of the arc-shaped portion.
The lower locking portion is formed from the tip portion of the lower inclined portion.
The lower locked portion is formed at the bottom, a first rising side rising from the first side of the bottom, a second rising side rising from the second side of the bottom, and the upper end of the first rising side. It is composed of the upper locked portion to be locked and the upper contacted portion formed at the upper end of the second rising side.
In the embodiment described later, the lower locked portion (lower case stopper) is formed on a horizontal base, a first vertical side on the first side of the horizontal side, and a second side on the horizontal side. It is composed of a second vertical side, a first upper horizontal side extending from the upper end of the first vertical side to the second side, and a second upper horizontal side extending from the upper end of the second vertical side to the first side. The first upper horizontal side forms the upper locked portion, and the second upper horizontal side forms the upper contacted portion. In this case, so-called lip channel steel (C-shaped steel) can be used as the lower locked portion (lower case stopper), and JIS standard steel can be used separately. It is not necessary to manufacture the lower locked portion.

１つの態様では、前記下側係止部が前記第１の傾斜姿勢から前記第２の傾斜姿勢へ移動する時に、前記下側係止部の先端が前記第１立ち上がり辺の内面に沿って上方に移動する。より具体的には、前記下側係止部の先端が前記第１立ち上がり辺の内面を上方に滑動しながら案内される。
なお、第１の係止位置において、前記下側係止部の先端が底辺の中途部位に当接している場合（例えば、図９の係止態様）には、前記下側係止部が前記第１の傾斜姿勢から前記第２の傾斜姿勢へ移動する時に、前記下側係止部の先端が前記底辺の上面を第１側に滑動しながら前記底辺と前記第１立ち上がり辺の角部まで案内され、さらに、前記第１立ち上がり辺の内面を上方に滑動しながら案内される。 In one embodiment, when the lower locking portion moves from the first tilted posture to the second tilted posture, the tip of the lower locking portion moves upward along the inner surface of the first rising side. Move to. More specifically, the tip of the lower locking portion is guided while sliding upward on the inner surface of the first rising side.
In the first locking position, when the tip of the lower locking portion is in contact with the middle portion of the bottom (for example, the locking mode of FIG. 9), the lower locking portion is said. When moving from the first inclined posture to the second inclined posture, the tip of the lower locking portion slides on the upper surface of the bottom side to the first side to the corner portion of the bottom side and the first rising side. It is guided, and further, it is guided while sliding upward on the inner surface of the first rising side.

本発明に係る技術思想をシャッターケースとして規定すると、
躯体に取り付けた左右のブラケットと、
左右のブラケット間に亘って開口幅方向に延びる上側ケース止め材と、
左右のブラケット間に亘って開口幅方向に延びる下側ケース止め材と、
金属製板材を湾曲状に変形させてなる面部と、前記面部の上端に形成された上側係止部と、前記面部の下端に形成された下側係止部と、を備えた１枚以上のケース板（丸ケース）と、
を備え、
前記面部は、弧状部と、前記弧状部の上側に一体形成された上側傾斜部と、前記弧状部の下側に一体形成された下側傾斜部と、からなり、
前記下側係止部は、前記下側傾斜部の先端部位から形成されており、
前記下側ケース止め材は、底辺と、前記底辺の躯体に近い側から立ち上がる第１立ち上がり辺と、前記底辺の躯体から遠い側から立ち上がる第２立ち上がり辺と、前記第１立ち上がり辺の上端から第２立ち上がり辺に向かって延びる上側被係止部と、第２立ち上がり辺の上端に形成された上側被当接部と、を備え、
前記下側係止部は、前記上側被係止部と前記上側被当接部との間の開口から前記下側ケース止め材の内部に挿入され、
前記ケース板の上側係止部、下側係止部が、それぞれ前記上側ケース止め材、下側ケース止め材に係止した状態において、前記下側係止部は第１の傾斜姿勢で、その先端が前記下側ケース止め材の前記底辺上に当接しており、
前記下側係止部は、前記上側係止部が前記上側ケース止め材から外れた時の前記ケース板の挙動（変形・回転）に応じて前記第１の傾斜姿勢から第２の傾斜姿勢に移動し、前記下側係止部の先端に近い第１部位の上面が前記上側被係止部の下側に接触し、前記下側係止部の先端から離間した第２部位の下面が前記上側被当接部の上側に当接する、
シャッターケース、となる。 When the technical idea according to the present invention is defined as a shutter case,
Left and right brackets attached to the skeleton,
An upper case stopper that extends in the opening width direction between the left and right brackets,
The lower case stopper that extends in the opening width direction between the left and right brackets,
One or more sheets including a surface portion formed by deforming a metal plate material in a curved shape, an upper locking portion formed at the upper end of the surface portion, and a lower locking portion formed at the lower end of the surface portion. Case plate (round case) and
With
The surface portion is composed of an arc-shaped portion, an upper inclined portion integrally formed on the upper side of the arc-shaped portion, and a lower inclined portion integrally formed on the lower side of the arc-shaped portion.
The lower locking portion is formed from the tip portion of the lower inclined portion.
The lower case stopper has a bottom, a first rising side that rises from a side close to the skeleton of the bottom, a second rising side that rises from a side far from the skeleton of the bottom, and a first rising side from the upper end of the first rising side. 2 The upper locked portion extending toward the rising side and the upper contacted portion formed at the upper end of the second rising side are provided.
The lower locking portion is inserted into the lower case stopper through an opening between the upper locked portion and the upper contacted portion.
In a state where the upper locking portion and the lower locking portion of the case plate are locked to the upper case stopper and the lower case stopper, respectively, the lower locking portion is in the first inclined posture. The tip is in contact with the bottom of the lower case stopper.
The lower locking portion changes from the first tilted posture to the second tilted posture according to the behavior (deformation / rotation) of the case plate when the upper locking portion is disengaged from the upper case stopper. The upper surface of the first portion that moves and is close to the tip of the lower locking portion is in contact with the lower side of the upper locked portion, and the lower surface of the second portion that is separated from the tip of the lower locking portion is said. Contact the upper side of the upper contacted part,
It becomes a shutter case.

本発明では、丸ケースの下側係止部は、丸ケースの上端の係止状態が外れた時の当該丸ケースの挙動（変形・回転）に応じて先端が上方に移動することで、前記第１の傾斜姿勢から第２の傾斜姿勢に移動し、前記先端に近い第１部位の上面が前記上側被係止部に当接（当接点Ｐ１）し、前記先端から遠い第２部位の下面が前記上側被当接部に当接する（当接点Ｐ２）第２の係止位置をとることによって、
下側係止部の第１部位の上面が当接点Ｐ１で上側被係止部の下側に当接することで、丸ケースのさらなる変形・回転によって当該下側係止部がさらに上方に回転することが規制されて第２の傾斜姿勢が保持され、
当接点Ｐ２が支点、当接点Ｐ１が作用点となって、丸ケースの自重による下向きの力Ｆが、作用点である当接点Ｐ１に上向きの力として作用し、当接点Ｐ１に生じる摩擦力によって、下側係止部が抜け出すように第２側へ移動することが規制され（てこの原理により、丸ケースが落下しようとする力が大きいほど、当接部Ｐ１に生じる摩擦力も大きくなる）、
丸ケースの下側係止部の第２の係止位置が保持されることによって、上側の係止状態が外れた丸ケースの落下を防止することができる。 In the present invention, the lower locking portion of the round case has a tip that moves upward according to the behavior (deformation / rotation) of the round case when the locked state of the upper end of the round case is released. Moving from the first tilted posture to the second tilted posture, the upper surface of the first portion near the tip abuts on the upper locked portion (contact point P1), and the lower surface of the second portion far from the tip. Takes a second locking position (contact point P2) in contact with the upper contacted portion.
When the upper surface of the first portion of the lower locking portion abuts on the lower side of the upper locked portion at the contact point P1, the lower locking portion rotates further upward due to further deformation and rotation of the round case. It is regulated and the second tilted posture is maintained,
The contact point P2 serves as a fulcrum, the contact point P1 serves as an action point, and a downward force F due to the weight of the round case acts as an upward force on the contact point P1 which is an action point, and the frictional force generated at the contact point P1 , The lower locking portion is restricted from moving to the second side so as to come out (according to the principle of leverage, the greater the force that the round case tries to drop, the greater the frictional force generated at the contact portion P1).
By holding the second locking position of the lower locking portion of the round case, it is possible to prevent the round case from falling when the upper locking state is released.

丸ケースの下側傾斜部から下側係止部を形成するものでは、下側傾斜部の先端の曲げ加工工程を減らすことができ、また、下側係止部の第１の係止位置において、さらに丸ケースの下側を螺子止めする必要はなく、施工性を向上させることができる。 In the case where the lower locking portion is formed from the lower inclined portion of the round case, the bending process of the tip of the lower inclined portion can be reduced, and at the first locking position of the lower locking portion. Furthermore, it is not necessary to screw the lower side of the round case, and workability can be improved.

シャッターケースを示す開口部上方部位の縦断面図である。It is a vertical cross-sectional view of the part above the opening which shows the shutter case. シャッターケースの正面図である。It is a front view of a shutter case. 図１の部分拡大図であって、ケース板の上側係止部と上側ケース止め材との係止状態を示す図である。It is a partially enlarged view of FIG. 1, and is the figure which shows the locking state of the upper locking part of a case plate, and the upper case stopper material. 図１の部分拡大図であって、ケース板の下側係止部と下側ケース止め材との係止状態を示す図である。It is a partially enlarged view of FIG. 1, and is the figure which shows the locking state of the lower locking part of a case plate, and the lower case stopper material. 第１の取付状態を示す図であり、ケース板の上側係止部は上側ケース止め材に係止しており、ケース板の下側係止部は、下側ケース止め材に対して第１の係止位置にある。It is a figure which shows the 1st mounting state, the upper locking part of a case plate is locked to the upper case stopper material, and the lower locking part of a case plate is the 1st Is in the locking position of. 図５の取付状態において、ケース板の上側係止部が上側ケース止め材から外れた時のケース板の振る舞い（変形・回転）を示す図である。FIG. 5 is a diagram showing the behavior (deformation / rotation) of the case plate when the upper locking portion of the case plate is disengaged from the upper case stopper in the mounted state of FIG. 図６の状態からさらにケース板が回転した図であり、ケース板の下側係止部は、下側ケース止め材に対して第２の係止位置にある。FIG. 6 is a view in which the case plate is further rotated from the state of FIG. 6, and the lower locking portion of the case plate is in the second locking position with respect to the lower case stopper. ケース板の下側傾斜部、下側係止部の第１の係止位置、第２の係止位置、第１の係止位置から第２の係止位置への移動の中間位置、を示す。Indicates the lower inclined portion of the case plate, the first locking position of the lower locking portion, the second locking position, and the intermediate position of the movement from the first locking position to the second locking position. .. 第２の取付状態を示す図であり、ケース板の上側係止部は上側ケース止め材に係止しており、ケース板の下側係止部は、下側ケース止め材に対して第１の係止位置にある。It is a figure which shows the 2nd mounting state, the upper locking part of a case plate is locked to the upper case stopper material, and the lower locking part of a case plate is the 1st Is in the locking position of. 図９の取付状態において、ケース板の上側係止部が上側ケース止め材から外れた時のケース板の振る舞い（変形・回転）を示す図である。FIG. 9 is a diagram showing the behavior (deformation / rotation) of the case plate when the upper locking portion of the case plate is disengaged from the upper case stopper in the mounted state of FIG. 図１０の状態からさらにケース板が回転した図であり、ケース板の下側係止部は、下側ケース止め材に対して第２の係止位置にある。FIG. 10 is a view in which the case plate is further rotated from the state of FIG. 10, and the lower locking portion of the case plate is in the second locking position with respect to the lower case stopper. ケース板の下側傾斜部、下側係止部の第１の係止位置、第２の係止位置、第１の係止位置から第２の係止位置への移動の中間位置、を示す。Indicates the lower inclined portion of the case plate, the first locking position of the lower locking portion, the second locking position, and the intermediate position of the movement from the first locking position to the second locking position. .. 第２の係止位置にあるケース板の下側係止部を拡大して示す図である。It is an enlarged view which shows the lower locking part of the case plate at the 2nd locking position.

図１は、建物開口部上方部位（本実施形態に係るシャッターケースを含む）の縦断面図であり、図２は、同正面図である。壁体Ｗには、天井Ｃの上方に位置して、開口幅方向に間隔を設けて左右のブラケット１が持ち出し状に対向して設けてある。左右のブラケット１間には、巻取シャフト２が支持されており、巻取シャフト２には、ガイドレールＧによって建物開口部上方のシャッターケース内に案内されたシャッターカーテン３が巻装される。 FIG. 1 is a vertical sectional view of a portion above a building opening (including a shutter case according to the present embodiment), and FIG. 2 is a front view of the same. The wall body W is located above the ceiling C, and the left and right brackets 1 are provided so as to face each other in a carry-out shape at intervals in the opening width direction. A take-up shaft 2 is supported between the left and right brackets 1, and a shutter curtain 3 guided by a guide rail G into a shutter case above the opening of the building is wound around the take-up shaft 2.

ブラケット１は、上縁１０、下縁１１、基端縁１２、先端縁１３を備えた方形の板体から形成されており、基端縁１２には基端片１２０が折曲形成されており、基端片１２０を壁体Ｗに当接させてボルトＢで固定することで、上記板体が壁体Ｗから垂直に延びている。本明細書において、ある要素が壁体Ｗに近い部位と、壁体Ｗから遠い部位を備えている場合に、壁体Ｗに近い側を第１側、壁体Ｗから遠い側を第２側という。 The bracket 1 is formed of a rectangular plate having an upper edge 10, a lower edge 11, a base end edge 12, and a tip end edge 13, and a base end piece 120 is bent and formed on the base end edge 12. By bringing the base end piece 120 into contact with the wall body W and fixing it with the bolt B, the plate body extends vertically from the wall body W. In the present specification, when an element includes a portion close to the wall body W and a portion far from the wall body W, the side closer to the wall body W is the first side, and the side far from the wall body W is the second side. That is.

ブラケット１の下縁１１には下片１１０が折曲形成されており、左右のブラケット１間において、下片１１０の長さ方向中央部位間には、取付部材４の長さ方向の両端部位がそれぞれ固定されている。取付部材４は、上面４０、下面４１、第１側の第１垂直面４２、第２側の第２垂直面４３から断面視正方形状を有する方形パイプである（図４参照）。 A lower piece 110 is bent at the lower edge 11 of the bracket 1, and between the left and right brackets 1 and between the central portions of the lower piece 110 in the length direction, both end portions of the mounting member 4 in the length direction are formed. Each is fixed. The mounting member 4 is a square pipe having a square cross-sectional view from the upper surface 40, the lower surface 41, the first vertical surface 42 on the first side, and the second vertical surface 43 on the second side (see FIG. 4).

図１に示すように、取付部材４には開口幅方向に延びる長尺状の支持部材１４が設けてあり、建物開口部上方には天井Ｃに近接してまぐさ１５、１６が離間対向して設けてあり、その間をシャッターカーテン３が通るようになっている。支持部材１４には、まぐさ１５の上方に位置して、スムーサ１７、エマーゼンシースイッチ１８が設けてある。 As shown in FIG. 1, the mounting member 4 is provided with a long support member 14 extending in the opening width direction, and the forages 15 and 16 are separated from each other in the vicinity of the ceiling C above the opening of the building. The shutter curtain 3 passes between them. The support member 14 is provided with a smoother 17 and an emergency switch 18 located above the forage 15.

左右のブラケット１の上縁１０と基端縁１２とで形成された角部（すなわちブラケット１の第１側の上方部位）間には、上側ケース止め材５の長さ方向両端部がそれぞれ固定されている。取付部材４の第２側部位である第２垂直面４３には、長さ方向に亘って下側ケース止め材６が固定されている。 Both ends of the upper case stopper 5 in the length direction are fixed between the corner portions (that is, the upper portion on the first side of the bracket 1) formed by the upper edge 10 and the base end edge 12 of the left and right bracket 1. Has been done. The lower case stopper 6 is fixed to the second vertical surface 43, which is the second side portion of the mounting member 4, over the length direction.

シャッターケースは複数枚の湾曲状のケース板（いわゆる丸ケース）７を開口幅方向に連設してなり、各ケース板７の上端、下端をそれぞれ上側ケース止め材５、下側ケース止め材６に取り付けることで、ケース板７の内側面と壁体Ｗとの間に巻取シャフト２に巻き取られたシャッターカーテン３の収容空間が形成される。 The shutter case consists of a plurality of curved case plates (so-called round cases) 7 connected in series in the opening width direction, and the upper end and the lower end of each case plate 7 are the upper case stopper 5 and the lower case stopper 6, respectively. A space for accommodating the shutter curtain 3 wound around the winding shaft 2 is formed between the inner surface of the case plate 7 and the wall body W.

ケース板７は、上下端部を近づける方向に弾性変形させることで、上側係止部、下側係止部を、それぞれ上側ケース止め材５、下側ケース止め材６に係止させ、弾性変形されたケース板が拡開する（上下端部が離隔する方向）弾性力によって係止状態が保持される。 The case plate 7 is elastically deformed in a direction in which the upper and lower end portions are brought closer to each other, thereby locking the upper locking portion and the lower locking portion to the upper case stopper 5 and the lower case stopper 6, respectively. The locked state is maintained by the elastic force that expands the case plate (in the direction in which the upper and lower ends are separated).

図２に示す態様では、シャッターケースは、５枚のケース板７Ａ、７Ｂ、７Ｃ、７Ｄ、７Ｅから形成されているが、シャッターケースを構成するケース板７の枚数は、開口幅寸法や各ケース板の幅寸法によって変わり得るものであり限定されない。図示の態様では、各ケース板７Ａ、７Ｂ、７Ｃ、７Ｄ、７Ｅは端部が重なるように取り付けられているが、重なりの態様（隣接するケース板のどちらが外側、内側に位置するか等）は図示の態様に限定されず、また、隣接するケース板の端縁同士を当接させるようにして、重なりを設けないものでもよい。 In the aspect shown in FIG. 2, the shutter case is formed of five case plates 7A, 7B, 7C, 7D, and 7E, but the number of case plates 7 constituting the shutter case is the opening width dimension and each case. It can vary depending on the width of the plate and is not limited. In the illustrated embodiment, the case plates 7A, 7B, 7C, 7D, and 7E are attached so that their ends overlap, but the overlapping mode (which of the adjacent case plates is located on the outside or inside, etc.) is different. The mode is not limited to the illustrated mode, and the edges of adjacent case plates may be brought into contact with each other so as not to overlap each other.

図１に示すように、ケース板（丸ケース）７は、断面視ないし側面視において、弧状部７０と、弧状部７０の上端から第１側（壁体Ｗ）に向かって上向き傾斜状に延びる上側傾斜部７１と、弧状部７０の下端から第１側（壁体Ｗ）に向かって下向き傾斜状に延びる下側傾斜部７２と、上側傾斜部７１の先端に上側に向かって折り返された上側折曲辺７３と、からなる。本実施形態では、上側傾斜部７１の先端部位７１０と上側折曲辺７３とから上側係止部が形成されており、下側傾斜部７２の先端部位から下側係止部７２０が形成されている。本実施形態では、上側傾斜部７１、下側傾斜部７２は、断面視直線状に延びる平面である。本実施形態に係るケース板７は重量シャッターのケース板であって、大きさにもよるが、一般的に５〜２０ｋｇの鋼板から形成されている。 As shown in FIG. 1, the case plate (round case) 7 extends upward from the arcuate portion 70 and the upper end of the arcuate portion 70 toward the first side (wall body W) in a cross-sectional view or a side view. The upper inclined portion 71, the lower inclined portion 72 extending downward from the lower end of the arc-shaped portion 70 toward the first side (wall body W), and the upper side folded upward toward the tip of the upper inclined portion 71. It consists of a folding side 73 and. In the present embodiment, the upper locking portion is formed from the tip portion 710 of the upper inclined portion 71 and the upper bent side 73, and the lower locking portion 720 is formed from the tip portion of the lower inclined portion 72. There is. In the present embodiment, the upper inclined portion 71 and the lower inclined portion 72 are planes extending in a straight line in cross section. The case plate 7 according to the present embodiment is a case plate for a heavy-duty shutter, and is generally made of a steel plate of 5 to 20 kg, although it depends on the size.

図２に示すように、上側ケース止め材５は、開口幅方向に延びる長尺材であって、図３に示すように、断面視ないし側面視において、壁体Ｗに沿って延びる垂直辺５０と、垂直辺５０の下端から第２側へ向かって水平状に延びる下辺５１と、垂直辺５０の上端から第２側へ向かって水平状に延びる上辺５２と、上辺５２の先端から垂下する上側垂直辺５３と、から形成されている。下辺５１の突出寸法（第１側から第２側へ向かう）は、上辺５２の突出寸法よりも大きい寸法を有している。上側垂直辺５３の下端と下辺５１の上面との間に、ケース板７の上側係止部を受け入れる開口が形成されており、上側ケース止め材５の上側垂直辺５３が、ケース板７の上側係止部が係止する被係止部となっている。 As shown in FIG. 2, the upper case stopper 5 is a long material extending in the opening width direction, and as shown in FIG. 3, a vertical side 50 extending along the wall body W in a cross-sectional view or a side view. A lower side 51 extending horizontally from the lower end of the vertical side 50 toward the second side, an upper side 52 extending horizontally from the upper end of the vertical side 50 toward the second side, and an upper side hanging from the tip of the upper side 52. It is formed from a vertical side 53. The protruding dimension of the lower side 51 (from the first side to the second side) has a dimension larger than the protruding dimension of the upper side 52. An opening for receiving the upper locking portion of the case plate 7 is formed between the lower end of the upper vertical side 53 and the upper surface of the lower side 51, and the upper vertical side 53 of the upper case stopper 5 is the upper side of the case plate 7. The locking portion is a locked portion to be locked.

図２に示すように、下側ケース止め材６は、開口幅方向に延びる長尺材であって、図４に示すように、断面視ないし側面視において、水平状の底辺６０と、底辺６０の第１側端部から垂直状に立ち上がる第１垂直辺６１と、底辺６０の第２側端部から垂直状に立ち上がる第２垂直辺６２と、第１垂直辺６１の上端から第２側に向かって水平状に延びる短尺の第１上側水平辺６３と、第２垂直辺６２の上端から第１側に向かって水平状に延びる短尺の第２上側水平辺６４と、からなる。第１上側水平辺６３と第２上側水平辺６４との間にケース板７の下側係止部７２０を受け入れる開口が形成されており、当該開口から下側ケース止め材６の内部空間にケース板７の下側係止部７２０が受け入れられる。下側ケース止め材６は、第１垂直辺６１を取付部材４の第２垂直面４３に固定（例えば溶接）することで取り付けられる。 As shown in FIG. 2, the lower case stopper 6 is a long material extending in the opening width direction, and as shown in FIG. 4, a horizontal base 60 and a bottom 60 in a cross-sectional view or a side view. The first vertical side 61 that rises vertically from the first side end of the above, the second vertical side 62 that rises vertically from the second side end of the bottom 60, and the second side from the upper end of the first vertical side 61. It is composed of a short first upper horizontal side 63 extending horizontally and a short second upper horizontal side 64 extending horizontally from the upper end of the second vertical side 62 toward the first side. An opening for receiving the lower locking portion 720 of the case plate 7 is formed between the first upper horizontal side 63 and the second upper horizontal side 64, and the case is formed in the internal space of the lower case stopper 6 from the opening. The lower locking portion 720 of the plate 7 is accepted. The lower case stopper 6 is attached by fixing (for example, welding) the first vertical side 61 to the second vertical surface 43 of the attachment member 4.

本実施形態に係る下側ケース止め材６はいわゆるリップ溝形鋼（Ｃ形鋼）であり、ＪＩＳ規格品の標準鋼材を採用することができる。Ｃ形鋼では、第１垂直辺６１と第２垂直辺６２の高さは同じであり、第１上側水平辺６３の上面と第２上側水平辺６４の上面の高さは同じであるが、第２上側水平辺６４の上面の高さ位置は、第１上側水平辺６３の下面の高さ位置よりも厚さ分だけ高く、後述するように、下側係止部７２０の第２の傾斜姿勢を保持することができる（図１３等参照）。 The lower case stopper 6 according to the present embodiment is a so-called lip channel steel (C-shaped steel), and a standard steel material of a JIS standard product can be adopted. In the C-shaped steel, the heights of the first vertical side 61 and the second vertical side 62 are the same, and the heights of the upper surface of the first upper horizontal side 63 and the upper surface of the second upper horizontal side 64 are the same. The height position of the upper surface of the second upper horizontal side 64 is higher than the height position of the lower surface of the first upper horizontal side 63 by the thickness, and as will be described later, the second inclination of the lower locking portion 720 is high. The posture can be maintained (see FIG. 13 and the like).

図３を参照しつつ、ケース板７の上側係止部（上側折曲辺７３＋上側傾斜部７１の先端部位７１０）と上側ケース止め材５との係止について説明する。上側折曲辺７３を、上側ケース止め材５の上側垂直辺５３の下端と下辺５１との間の開口から差し入れ、上側ケース止め材５の上側垂直辺５３に係止させる。係止状態では、上側垂直辺５３の下端がケース板７の上側傾斜部７１の先端部位７１０の上面に当接している。上側ケース止め材の形状・構成、上側係止部の形状・構成は図示の態様に限定されるものではない。 With reference to FIG. 3, the locking of the upper locking portion (upper bent side 73 + tip portion 710 of the upper inclined portion 71) of the case plate 7 and the upper case stopper 5 will be described. The upper bent side 73 is inserted through the opening between the lower end of the upper vertical side 53 of the upper case stopper 5 and the lower side 51, and is locked to the upper vertical side 53 of the upper case stopper 5. In the locked state, the lower end of the upper vertical side 53 is in contact with the upper surface of the tip portion 710 of the upper inclined portion 71 of the case plate 7. The shape / configuration of the upper case stopper and the shape / configuration of the upper locking portion are not limited to the illustrated modes.

図４を参照しつつ、ケース板７の下側係止部（下側傾斜部７２の先端部位）７２０と下側ケース止め材６との係止について説明する。下側傾斜部７２の先端部位を、下側ケース止め材６の第１上側水平辺６３と第２上側水平辺６４との間の開口から差し入れ、下側傾斜部７２の先端７２１を下側ケース止め材６の底辺６０の第１側端部、すなわち、底辺６０と第１垂直辺６１との角部に当接係止させる。 With reference to FIG. 4, the locking of the lower locking portion (tip portion of the lower inclined portion 72) 720 of the case plate 7 and the lower case stopper 6 will be described. The tip portion of the lower inclined portion 72 is inserted through the opening between the first upper horizontal side 63 and the second upper horizontal side 64 of the lower case stopper 6, and the tip 721 of the lower inclined portion 72 is inserted into the lower case. The stopper member 6 is brought into contact with and locked to the first side end portion of the bottom side 60, that is, the corner portion between the bottom side 60 and the first vertical side 61.

ケース板７が取り付けられた状態、すなわち、ケース板７の上端部、下端部が上側ケース止め材５、下側ケース止め材６に係止した状態において、下側係止部７２０は第１の傾斜姿勢にあり、下側ケース止め材６に対する下側係止部７２０の係止位置を第１の係止位置とする。 In the state where the case plate 7 is attached, that is, the upper end and the lower end of the case plate 7 are locked to the upper case stopper 5 and the lower case stopper 6, the lower locking portion 720 is the first. The first locking position is the locking position of the lower locking portion 720 with respect to the lower case stopper 6 in the inclined posture.

図４（図５も同様）に示す第１の係止位置では、第１傾斜姿勢にある下側係止部７２０の上面、下面は、第１上側水平辺６３、第２上側水平辺６４とは接触していない。この第１の係止位置の態様は図４（図５）に示す態様に限定されるものではなく、下側ケース止め材６に対するケース板７の下側係止部７２０の掛かりが浅い場合には、図９のような状態となる。具体的には、下側係止部７２０の先端７２１が、下側ケース止め材６の底辺６０の上面に当接しており、下側係止部７２０の先端７２１から離間した部位の下面が第２上側水平辺６４の先端に当接している。いずれの場合（図４、図５、図９）においても、第１の係止位置において、丸ケースの下側係止部７２０の先端７２１が下側ケース止め材６の底辺６０の上面に接触している。 At the first locking position shown in FIG. 4 (also in FIG. 5), the upper surface and the lower surface of the lower locking portion 720 in the first inclined posture are the first upper horizontal side 63 and the second upper horizontal side 64. Is not in contact. The mode of the first locking position is not limited to the mode shown in FIG. 4 (FIG. 5), and when the lower locking portion 720 of the case plate 7 is shallowly hooked on the lower case stopper 6. Is in the state shown in FIG. Specifically, the tip 721 of the lower locking portion 720 is in contact with the upper surface of the bottom 60 of the lower case stopper 6, and the lower surface of the portion separated from the tip 721 of the lower locking portion 720 is the first. 2 It is in contact with the tip of the upper horizontal side 64. In any case (FIGS. 4, 5, and 9), at the first locking position, the tip 721 of the lower locking portion 720 of the round case contacts the upper surface of the bottom 60 of the lower case stopper 6. doing.

本実施形態は、ケース板７の上側の係止状態が外れた場合にケース板７の脱落を防止する手段を提供するものであり、この手段について、第１の取付態様（図５〜図８）、第２の取付態様（図９〜図１２）に基づいて説明する。 The present embodiment provides means for preventing the case plate 7 from falling off when the upper locked state of the case plate 7 is released, and the first mounting mode (FIGS. 5 to 8) is provided for this means. ), The second mounting mode (FIGS. 9 to 12) will be described.

図５において、ケース板７の上側係止部は上側ケース止め材５に係止しており、下側係止部７２０は下側ケース止め材６に第１の係止位置で係止している。第１の係止位置では、下側傾斜部７２の下側係止部７２０の先端７２１が下側ケース止め材６の底辺６０と第１垂直辺６１との角部に当接係止している。 In FIG. 5, the upper locking portion of the case plate 7 is locked to the upper case stopper 5, and the lower locking portion 720 is locked to the lower case stopper 6 at the first locking position. There is. In the first locking position, the tip 721 of the lower locking portion 720 of the lower inclined portion 72 abuts and locks the corner portion between the bottom 60 of the lower case stopper 6 and the first vertical side 61. There is.

図５の取付状態において、振動等によって、ケース板７の上側折曲辺７３が上側ケース止め材の上側垂直辺５３から外れると、係止状態で弾性変形されていたケース板７は拡開するように弾性復帰し、かつ、前方（上側ケース止め材５から離間する方向、すなわち、第２側）かつ下方に向かって自重で回転する。 In the mounted state of FIG. 5, when the upper bent side 73 of the case plate 7 is separated from the upper vertical side 53 of the upper case stopper due to vibration or the like, the case plate 7 elastically deformed in the locked state expands. As described above, it elastically returns and rotates forward (in the direction away from the upper case stopper 5, that is, the second side) and downward by its own weight.

この時、下側傾斜部７２の先端７２１の下側ケース止め材６の底辺６０と第１垂直辺６１との角部への当接が維持された状態で、下側係止部７２０は傾斜勾配が小さくなるように移動し、下側係止部７２０の先端７２１から離間した部位の下面が第２上側水平辺６４の先端に接触し（図６）、さらにケース板７が回転することで、下側係止部７２０の先端７２１が第１垂直辺６１の内面を滑って上方に移動しながら、下側係止部７２０は傾斜勾配がさらに小さくなるように移動し、下側係止部７２０の先端７２１に近い側の部位（第１側）の上面が第１上側水平辺６３の下面に当接係止し、下側係止部７２０の先端７２１から離間した部位（第２側）の下面が第２上側水平辺６４の上面に当接する（図７）。 At this time, the lower locking portion 720 is tilted while the contact between the bottom 60 of the lower case stopper 6 and the first vertical side 61 of the tip 721 of the lower tilted portion 72 is maintained. It moves so that the gradient becomes smaller, the lower surface of the portion separated from the tip 721 of the lower locking portion 720 comes into contact with the tip of the second upper horizontal side 64 (FIG. 6), and the case plate 7 further rotates. While the tip 721 of the lower locking portion 720 slides upward on the inner surface of the first vertical side 61, the lower locking portion 720 moves so that the inclination gradient becomes smaller, and the lower locking portion 720 moves upward. The upper surface of the portion (first side) near the tip 721 of the 720 is abutted and locked to the lower surface of the first upper horizontal side 63, and is separated from the tip 721 of the lower locking portion 720 (second side). The lower surface of the second upper horizontal side 64 abuts on the upper surface of the second upper horizontal side 64 (FIG. 7).

図７に示す、下側ケース止め材６に対するケース板７の下側係止部７２０の係止位置を第２の係止位置とする。第２の係止位置において、ケース板７の下側係止部７２０は第２の傾斜姿勢にある。第２の傾斜姿勢は水平姿勢に近く、水平面を０度とした時の下側係止部７２０の第２の傾斜姿勢の角度は、水平に対する第１の傾斜姿勢の角度よりも小さい。 The locking position of the lower locking portion 720 of the case plate 7 with respect to the lower case stopper 6 shown in FIG. 7 is defined as the second locking position. At the second locking position, the lower locking portion 720 of the case plate 7 is in the second tilted position. The second tilted posture is close to the horizontal posture, and the angle of the second tilted posture of the lower locking portion 720 when the horizontal plane is 0 degrees is smaller than the angle of the first tilted posture with respect to the horizontal.

図８において、第１の係止位置（第１の傾斜姿勢）にある下側傾斜部、下側係止部を７２、７２０で示し、第２の係止位置（第２の傾斜姿勢）にある下側傾斜部、下側係止部を７２´´、７２０´´で示し、第１の係止位置から第２の係止位置へ移動する途中の下側傾斜部、下側係止部を７２´、７２０´で示す。 In FIG. 8, the lower inclined portion and the lower locked portion in the first locking position (first inclined posture) are indicated by 72 and 720, and are set to the second locking position (second inclined posture). A certain lower inclined portion and lower locking portion are indicated by 72 ″ and 720 ″, and the lower inclined portion and the lower locking portion on the way from the first locking position to the second locking position are shown. Is indicated by 72'and 720'.

図９において、ケース板７の上側係止部は上側ケース止め材５に係止しており、下側係止部７２０は下側ケース止め材６に第１の係止位置で係止している。第１の係止位置では、下側傾斜部７２の下側係止部７２０の先端７２１が下側ケース止め材６の底辺６０の上面に当接係止しており、下側係止部７２０の先端７２１から離間した部位が第２上側水平辺６４の先端に接触している。 In FIG. 9, the upper locking portion of the case plate 7 is locked to the upper case stopper 5, and the lower locking portion 720 is locked to the lower case stopper 6 at the first locking position. There is. At the first locking position, the tip 721 of the lower locking portion 720 of the lower inclined portion 72 is abutted and locked to the upper surface of the bottom 60 of the lower case stopper 6, and the lower locking portion 720 is locked. A portion separated from the tip 721 is in contact with the tip of the second upper horizontal side 64.

図９の取付状態において、振動等によって、ケース板７の上側折曲辺７３が上側ケース止め材の上側垂直辺５３から外れると、係止状態で弾性変形されていたケース板７は拡開するように弾性復帰し、かつ、前方（上側ケース止め材５から離間する方向、すなわち、第２側）かつ下方に向かって自重で回転する。 In the mounted state of FIG. 9, when the upper bent side 73 of the case plate 7 is separated from the upper vertical side 53 of the upper case stopper due to vibration or the like, the case plate 7 elastically deformed in the locked state expands. As described above, it elastically returns and rotates forward (in the direction away from the upper case stopper 5, that is, the second side) and downward by its own weight.

この時、下側係止部７２０は、先端７２１から離間した部位が第２上側水平辺６４の先端を滑りながら、先端７２１が下側ケース止め材６の底辺６０の上面を第１側へ向かって底辺６０と第１垂直辺６１との角部に当接するまで滑ることで、傾斜勾配が小さくなるように移動し（図１０）、さらにケース板７が回転することで、下側係止部７２０の先端７２１が第１垂直辺６１の内面を滑って上方に移動しながら、下側係止部７２０は傾斜勾配がさらに小さくなるように移動し、下側係止部７２０の先端７２１に近い側の部位（第１側）の上面が第１上側水平辺６３の下面に当接係止し、下側係止部７２０の先端７２１から離間した部位（第２側）の下面が第２上側水平辺６４の上面に当接する（図１１）。 At this time, in the lower locking portion 720, the tip 721 faces the upper surface of the bottom 60 of the lower case stopper 6 toward the first side while the portion separated from the tip 721 slides on the tip of the second upper horizontal side 64. By sliding until it comes into contact with the corners of the bottom 60 and the first vertical side 61, it moves so that the inclination gradient becomes smaller (FIG. 10), and the case plate 7 rotates to further lock the lower locking portion. While the tip 721 of the 720 slides upward on the inner surface of the first vertical side 61, the lower locking portion 720 moves so that the inclination gradient becomes smaller, and is close to the tip 721 of the lower locking portion 720. The upper surface of the side portion (first side) is abutted and locked to the lower surface of the first upper horizontal side 63, and the lower surface of the portion (second side) separated from the tip 721 of the lower locking portion 720 is the second upper surface. It abuts on the upper surface of the horizontal side 64 (FIG. 11).

図１１に示す、下側ケース止め材６に対するケース板７の下側係止部７２０の係止位置を第２の係止位置とする。第２の係止位置において、ケース板７の下側係止部７２０は第２の傾斜姿勢にある。第２の傾斜姿勢は水平姿勢に近く、水平面を０度とした時の下側係止部７２０の第２の傾斜姿勢の角度は、水平に対する第１の傾斜姿勢の角度よりも小さい。 The locking position of the lower locking portion 720 of the case plate 7 with respect to the lower case stopper 6 shown in FIG. 11 is defined as the second locking position. At the second locking position, the lower locking portion 720 of the case plate 7 is in the second tilted position. The second tilted posture is close to the horizontal posture, and the angle of the second tilted posture of the lower locking portion 720 when the horizontal plane is 0 degrees is smaller than the angle of the first tilted posture with respect to the horizontal.

図１２において、第１の係止位置（第１の傾斜姿勢）にある下側傾斜部、下側係止部を７２、７２０で示し、第２の係止位置（第２の傾斜姿勢）にある下側傾斜部、下側係止部を７２´´、７２０´´で示し、第１の係止位置から第２の係止位置へ移動する途中の下側傾斜部、下側係止部を７２´、７２０´で示す。 In FIG. 12, the lower inclined portion and the lower locked portion in the first locking position (first inclined posture) are indicated by 72 and 720, and are set to the second locking position (second inclined posture). A certain lower inclined portion and lower locking portion are indicated by 72 ″ and 720 ″, and the lower inclined portion and the lower locking portion on the way from the first locking position to the second locking position are shown. Is indicated by 72'and 720'.

第１の取付態様（図５〜図８）と第２の取付態様（図９〜図１２）において、第１の係止位置において、少なくとも下側係止部７２０の先端７２１が底辺６０上に当接している点において共通する。ケース板７（丸ケース）の上端の係止状態が外れた時の当該丸ケースの挙動に応じて下側係止部７２０は第１の係止位置から第２の係止位置へ移動するが、丸ケースの挙動には、上下の係止状態からの弾性復帰による拡開（丸ケースの下端を支点として丸ケースの上端が前方へ移動するように作用する）、自重による前方かつ下方への回転、自重によるさらなる拡開（剛性・弾性力と自重との関係による）が含まれ得る。丸ケースの挙動に応じて得られる第２の係止位置は第１の取付態様、第２の取付態様で実質的に同じである。以下に、第２の係止位置の作用効果について説明する。 In the first mounting mode (FIGS. 5 to 8) and the second mounting mode (FIGS. 9 to 12), at least the tip 721 of the lower locking portion 720 is on the base 60 at the first locking position. It is common in that they are in contact with each other. The lower locking portion 720 moves from the first locking position to the second locking position according to the behavior of the round case when the upper end of the case plate 7 (round case) is released from the locked state. , The behavior of the round case is to expand by elastic recovery from the upper and lower locked state (acts to move the upper end of the round case forward with the lower end of the round case as a fulcrum), forward and downward due to its own weight. Further expansion due to rotation and own weight (due to the relationship between rigidity / elastic force and own weight) may be included. The second locking position obtained according to the behavior of the round case is substantially the same in the first mounting mode and the second mounting mode. The action and effect of the second locking position will be described below.

図１３は、第２の係止位置にある下側係止部７２０を拡大して示す。図１３に示すように、第２の係止位置において、下側係止部７２０の先端７２１は、第１垂直辺６１の内面の上端に近接しており（図８に示すように当接してもよく、あるいは、長さ方向に部分的に当接していてもよい）、下側係止部７２０の先端７２１から少し離間した第１部位７２０Ａの上面は、第１上側水平辺６３の下面の先端側に当接している。第２の係止位置における下側係止部７２０の第１部位７２０Ａの上面と第１上側水平辺６３の下面との当接点をＰ１とする。下側係止部７２０の第１部位７２０Ａよりもさらに第２側へ離間した第２部位７２０Ｂの下面は、第２上側水平辺６４の上面の先端側に当接している。第２の係止位置における下側係止部７２０の第２部位７２０Ｂの下面と第２上側水平辺６４の上面との当接点をＰ２とする。 FIG. 13 shows an enlarged view of the lower locking portion 720 at the second locking position. As shown in FIG. 13, at the second locking position, the tip 721 of the lower locking portion 720 is close to the upper end of the inner surface of the first vertical side 61 (contacting as shown in FIG. 8). The upper surface of the first portion 720A slightly separated from the tip 721 of the lower locking portion 720 is the lower surface of the first upper horizontal side 63. It is in contact with the tip side. Let P1 be the contact point between the upper surface of the first portion 720A of the lower locking portion 720 and the lower surface of the first upper horizontal side 63 at the second locking position. The lower surface of the second portion 720B, which is further separated from the first portion 720A of the lower locking portion 720 to the second side, is in contact with the tip end side of the upper surface of the second upper horizontal side 64. Let P2 be the contact point between the lower surface of the second portion 720B of the lower locking portion 720 and the upper surface of the second upper horizontal side 64 at the second locking position.

剛性と自重との関係からケース板７は、図７、図１１の状態からさらに開くように変形し得るが、下側係止部７２０の第１部位７２０Ａの上面が第１上側水平辺６３の下面に当接点Ｐ１で当接することで、下側係止部７２０の第２の傾斜姿勢は維持され、ケース板７の下側傾斜部７２の先端側の上方への回転（上方への抜け）が規制される。 Due to the relationship between the rigidity and its own weight, the case plate 7 can be deformed so as to be further opened from the states shown in FIGS. 7 and 11, but the upper surface of the first portion 720A of the lower locking portion 720 is the first upper horizontal side 63. By abutting on the lower surface at the contact point P1, the second inclined posture of the lower locking portion 720 is maintained, and the lower inclined portion 72 of the case plate 7 rotates upward on the tip side (upward pull-out). Is regulated.

第２の係止位置において、当接点Ｐ２を支点とすると、自重で開くように変形したケース板７の上端側が力点となり、当接点Ｐ１が作用点となる。したがって、てこの原理により、ケース板７が落下しようとする下向きの力Ｆが大きいほど、当接点Ｐ１には大きな力が作用し、当接点Ｐ１と当接点Ｐ２との距離は、当接点Ｐ２とケース板７の上端との距離よりも短いことも相俟って、当接点Ｐ１は強力な摩擦力で保持されるので、第２の係止位置にある下側係止部７２０の第２側（抜け出す方向）への移動が規制される。 In the second locking position, when the contact point P2 is used as a fulcrum, the upper end side of the case plate 7 deformed to open by its own weight becomes the force point, and the contact point P1 becomes the action point. Therefore, according to the principle of leverage, the larger the downward force F that the case plate 7 tries to drop, the larger the force acts on the contact point P1, and the distance between the contact point P1 and the contact point P2 is set to the contact point P2. Coupled with the fact that it is shorter than the distance from the upper end of the case plate 7, the contact point P1 is held by a strong frictional force, so that the second side of the lower locking portion 720 at the second locking position Movement in the (outward direction) is restricted.

このように、ケース板７の上側の係止状態が外れた時には、ケース板７の挙動に応じて下側係止部７２０が第１の係止位置から第２の係止位置に移動し、下側係止部７２０の第１部位７２０Ａが第１上側水平辺６３に下方から当接することで、第２の係止位置からの上方への移動が規制されると共に、上側が外れて自由となったケース板７の自重によって作用する摩擦力によって第２の係止位置から第２側への移動が規制され、よって、下側係止部７２０の第２の係止位置が維持され、上側の係止状態が外れたケース板７の落下が防止される。 In this way, when the upper locking state of the case plate 7 is released, the lower locking portion 720 moves from the first locking position to the second locking position according to the behavior of the case plate 7. When the first portion 720A of the lower locking portion 720 abuts on the first upper horizontal side 63 from below, the upward movement from the second locking position is restricted, and the upper side is freed to come off. The frictional force acting by the weight of the case plate 7 regulates the movement from the second locking position to the second side, so that the second locking position of the lower locking portion 720 is maintained and the upper side is maintained. The case plate 7 is prevented from falling when the locked state is released.

５上側ケース止め材
６下側ケース止め材（下側被係止部）
６０底辺（底部）
６１第１垂直辺
６２第２垂直辺
６３第１上側水平辺（上側被係止部）
６４第２上側水平辺（上側被当接部）
７ケース板（丸ケース）
７０弧状部
７１上側傾斜部
７２下側傾斜部
７２０下側係止部
７２０Ａ第１部位
７２０Ｂ第２部位
７２１先端
Ｐ１下側係止部の第１部位と上側被係止部との当接点（作用点）
Ｐ２下側係止部の第２部位と上側被当接部との当接点（支点）
5 Upper case stopper 6 Lower case stopper (lower locked part)
60 Bottom (bottom)
61 1st vertical side 62 2nd vertical side 63 1st upper horizontal side (upper locked portion)
64 Second upper horizontal side (upper contacted part)
7 Case plate (round case)
70 Arc-shaped part 71 Upper inclined part 72 Lower inclined part 720 Lower locking part 720A First part 720B Second part 721 Tip P1 Contact point between the first part of the lower locking part and the upper locked part (action) point)
P2 Contact point (fulcrum) between the second part of the lower locking part and the upper contacted part

Claims

上下端部を係止させることで取り付けられる丸ケースの落下防止方法であって、
前記丸ケースは、弧状部と、前記弧状部の上側に一体形成された上側傾斜部と、前記弧状部の下側に一体形成された下側傾斜部と、上側傾斜部の先端部位と上側折曲辺とから形成された上側係止部と、前記下側傾斜部の先端部位から形成された下側係止部と、を備え、前記下側係止部は、先端に近い第１部位と、先端から遠い第２部位と、を備え、
上側被係止部は、上辺と、下辺と、上辺の先端から垂下する上側垂直辺と、からなり、上側垂直辺の下端と下辺の間の開口から前記上側係止部を差し入れるようになっており、
下側被係止部は、底部と、前記底部の第１側から立ち上がる第１立ち上がり辺と、前記底部の第２側から立ち上がる第２立ち上がり辺と、前記第１立ち上がり辺の上端に形成された上側被係止辺と、前記第２立ち上がり辺の上端に形成された上側被当接辺と、からなり、前記上側被係止辺と前記上側被当接辺との間の開口から前記下側係止部を受け入れるようになっており、
丸ケースが取り付けられた状態では、
前記上側係止部が前記上側被係止部に係止することで丸ケースの上端が係止状態にあり、該係止状態において、前記上側係止部と前記上側被係止部は当接しており、
前記下側係止部は、第１の傾斜姿勢で先端が前記底部と前記第１立ち上がり辺の下端との角部に当接する第１の係止位置にあり、前記下側係止部と前記上側被当接辺は離間しており、
丸ケースの上端の係止状態が外れた時に、
前記下側係止部を、丸ケースの上端の係止状態が外れた時の当該丸ケースの挙動に応じて、前記先端と前記角部との当接を維持した状態で、傾斜勾配が小さくなるように移動させて、前記第２部位の下面を前記上側被当接辺の先端に接触させ、
さらに、前記下側係止部を、先端が上方に移動しながら傾斜勾配がさらに小さくなるように移動させて第２の傾斜姿勢とし、前記第１部位の上面を前記上側被係止辺の下面に当接点Ｐ１で当接係止させ、前記第２部位の下面を前記上側被当接辺の上面に当接点Ｐ２で当接させて第２の係止位置をとるようにし、
前記下側係止部の前記第１部位の上面が当接点Ｐ１で前記上側被係止辺の下面に当接することで、当該下側係止部がさらに上方に回転することが規制されて第２の傾斜姿勢が保持され、
当接点Ｐ２が支点、当接点Ｐ１が作用点となって、丸ケースの自重による下向きの力が、作用点である当接点Ｐ１に上向きの力として作用し、当接点Ｐ１に生じる摩擦力によって、前記下側係止部が抜け出すように移動することが規制され、
丸ケースの前記下側係止部の第２の係止位置が保持されることによって、上側の係止状態が外れた丸ケースの落下を防止する、
丸ケースの落下防止方法。 It is a fall prevention method for a round case that can be attached by locking the upper and lower ends.
The round case has an arc-shaped portion, an upper inclined portion integrally formed on the upper side of the arc-shaped portion, a lower inclined portion integrally formed on the lower side of the arc-shaped portion, and a tip portion and an upper folding of the upper inclined portion. The upper locking portion formed from the curved side and the lower locking portion formed from the tip portion of the lower inclined portion are provided, and the lower locking portion is a first portion near the tip. , With a second part far from the tip,
The upper locked portion is composed of an upper side, a lower side, and an upper vertical side hanging from the tip of the upper side, and the upper locked portion is inserted from an opening between the lower end and the lower side of the upper vertical side. And
The lower locked portion is formed at the bottom, the first rising side rising from the first side of the bottom, the second rising side rising from the second side of the bottom, and the upper end of the first rising side. The upper locked side is composed of an upper locked side and an upper contacted side formed at the upper end of the second rising side, and the lower side is formed from an opening between the upper locked side and the upper contacted side. It is designed to accept the locking part,
With the round case attached
The upper end of the round case is in the locked state by locking the upper locked portion to the upper locked portion, and in the locked state, the upper locked portion and the upper locked portion are in contact with each other. And
The lower locking portion is in a first locking position where the tip abuts the corner portion between the bottom portion and the lower end of the first rising side in the first inclined posture, and the lower locking portion and the lower locking portion are located. The upper contact side is separated,
Sometimes is the locked state of the upper end of the round case out,
The lower engaging portion, depending on the behavior of the round case when the locked state of the upper end of the round casing off, while maintaining the contact between said tip and said angle portion, the inclined slope is small The lower surface of the second portion is brought into contact with the tip of the upper contacted side.
Further, the lower locking portion is moved so that the tilt gradient becomes smaller while the tip moves upward to obtain the second tilted posture, and the upper surface of the first portion is the lower surface of the upper locked side. At the contact point P1, the lower surface of the second portion is brought into contact with the upper surface of the upper contact side at the contact point P2 to take the second locking position .
When the upper surface of the first portion of the lower locking portion abuts on the lower surface of the upper locked side at the contact point P1, the lower locking portion is restricted from rotating further upward. 2 tilted posture is maintained,
The contact point P2 serves as a fulcrum and the contact point P1 serves as an action point, and a downward force due to the weight of the round case acts as an upward force on the contact point P1 which is an action point, and the frictional force generated at the contact point P1 causes The lower locking portion is restricted from moving so as to come out,
By holding the second locking position of the lower locking portion of the round case, it is possible to prevent the round case from falling when the upper locked state is released.
How to prevent the round case from falling.

上下端部を係止させることで取り付けられる丸ケースの落下防止方法であって、
前記丸ケースは、弧状部と、前記弧状部の上側に一体形成された上側傾斜部と、前記弧状部の下側に一体形成された下側傾斜部と、上側傾斜部の先端部位と上側折曲辺とから形成された上側係止部と、前記下側傾斜部の先端部位から形成された下側係止部と、を備え、前記下側係止部は、先端に近い第１部位と、先端から遠い第２部位と、を備え、
上側被係止部は、上辺と、下辺と、上辺の先端から垂下する上側垂直辺と、からなり、上側垂直辺の下端と下辺の間の開口から前記上側係止部を差し入れるようになっており、
下側被係止部は、底部と、前記底部の第１側から立ち上がる第１立ち上がり辺と、前記底部の第２側から立ち上がる第２立ち上がり辺と、前記第１立ち上がり辺の上端に形成された上側被係止辺と、前記第２立ち上がり辺の上端に形成された上側被当接辺と、からなり、前記上側被係止辺と前記上側被当接辺との間の開口から前記下側係止部を受け入れるようになっており、
丸ケースが取り付けられた状態では、
前記上側係止部が前記上側被係止部に係止することで丸ケースの上端が係止状態にあり、該係止状態において、前記上側係止部と前記上側被係止部は当接しており、
前記下側係止部は、第１の傾斜姿勢で先端が前記底部に当接すると共に、当該下側係止部の前記第２部位の下面が前記上側被当接辺の先端に当接する第１の係止位置にあり、
丸ケースの上端の係止状態が外れた時に、
前記下側係止部を、丸ケースの上端の係止状態が外れた時の当該丸ケースの挙動に応じて、前記第２部位の下面と前記上側被当接辺の先端との当接を維持した状態で、傾斜勾配が小さくなるように、前記先端を前記底部の上面を当該底部と前記第１立ち上がり辺との角部に当接するまで滑らせ、
さらに、前記下側係止部を、先端が上方に移動しながら傾斜勾配がさらに小さくなるように移動させて第２の傾斜姿勢とし、前記第１部位の上面を前記上側被係止辺の下面に当接点Ｐ１で当接係止させ、前記第２部位の下面を前記上側被当接辺の上面に当接点Ｐ２で当接させて第２の係止位置をとるようにし、
前記下側係止部の前記第１部位の上面が当接点Ｐ１で前記上側被係止辺の下面に当接することで、当該下側係止部がさらに上方に回転することが規制されて第２の傾斜姿勢が保持され、
当接点Ｐ２が支点、当接点Ｐ１が作用点となって、丸ケースの自重による下向きの力が、作用点である当接点Ｐ１に上向きの力として作用し、当接点Ｐ１に生じる摩擦力によって、前記下側係止部が抜け出すように移動することが規制され、
丸ケースの前記下側係止部の第２の係止位置が保持されることによって、上側の係止状態が外れた丸ケースの落下を防止する、
丸ケースの落下防止方法。 It is a fall prevention method for a round case that can be attached by locking the upper and lower ends.
The round case has an arc-shaped portion, an upper inclined portion integrally formed on the upper side of the arc-shaped portion, a lower inclined portion integrally formed on the lower side of the arc-shaped portion, and a tip portion and an upper folding of the upper inclined portion. The upper locking portion formed from the curved side and the lower locking portion formed from the tip portion of the lower inclined portion are provided, and the lower locking portion is a first portion near the tip. , With a second part far from the tip,
The upper locked portion is composed of an upper side, a lower side, and an upper vertical side hanging from the tip of the upper side, and the upper locked portion is inserted from an opening between the lower end and the lower side of the upper vertical side. And
The lower locked portion is formed at the bottom, the first rising side rising from the first side of the bottom, the second rising side rising from the second side of the bottom, and the upper end of the first rising side. The upper locked side is composed of an upper locked side and an upper contacted side formed at the upper end of the second rising side, and the lower side is formed from an opening between the upper locked side and the upper contacted side. It is designed to accept the locking part,
With the round case attached
The upper end of the round case is in the locked state by locking the upper locked portion to the upper locked portion, and in the locked state, the upper locked portion and the upper locked portion are in contact with each other. And
The tip of the lower locking portion abuts on the bottom in the first inclined posture, and the lower surface of the second portion of the lower locking portion abuts on the tip of the upper contact side. In the locking position of
Sometimes is the locked state of the upper end of the round case out,
The lower locking portion is brought into contact with the lower surface of the second portion and the tip of the upper contact side according to the behavior of the round case when the upper end of the round case is released from the locked state. while maintaining, as inclined slope is reduced, smooth the top surface of the tip the bottom to contact a corner portion between the first rising edge and the bottom racemate,
Further, the lower locking portion is moved so that the tilt gradient becomes smaller while the tip moves upward to obtain the second tilted posture, and the upper surface of the first portion is the lower surface of the upper locked side. At the contact point P1, the lower surface of the second portion is brought into contact with the upper surface of the upper contact side at the contact point P2 to take the second locking position .
When the upper surface of the first portion of the lower locking portion abuts on the lower surface of the upper locked side at the contact point P1, the lower locking portion is restricted from rotating further upward. 2 tilted posture is maintained,
The contact point P2 serves as a fulcrum and the contact point P1 serves as a point of action, and the downward force due to the weight of the round case acts as an upward force on the contact point P1 which is the point of action, and the frictional force generated at the contact point P1 causes the frictional force. The lower locking portion is restricted from moving so as to come out,
By holding the second locking position of the lower locking portion of the round case, it is possible to prevent the round case from falling when the upper locked state is released.
How to prevent the round case from falling.

前記上側被当接辺の上面の高さ位置と前記上側被係止辺の上面の高さ位置はほぼ同じであり、
前記上側被当接辺の上面の高さ位置は、前記上側被係止辺の下面の高さ位置よりも当該上側被係止辺の厚さ分だけ高く、
前記第２の傾斜姿勢は水平姿勢に近い姿勢である、
請求項１、２いずれか１項に記載の丸ケースの落下防止方法。 The height position of the upper surface of the upper contact side and the height position of the upper surface of the upper locked side are almost the same.
The height position of the upper surface of the upper abutted edges than said height position of the lower surface of the upper Hikakaritomehen rather height by the thickness of the said upper Hikakaritomehen,
The second tilted posture is a posture close to a horizontal posture .
The method for preventing a round case from falling according to any one of claims 1 and 2.

前記下側係止部が前記第１の傾斜姿勢から前記第２の傾斜姿勢へ移動する時に、前記下側係止部の先端が前記第１立ち上がり辺の内面に沿って上方に移動する、
請求項１〜３いずれか１項に記載の丸ケースの落下防止方法。 When the lower locking portion moves from the first tilted posture to the second tilted posture, the tip of the lower locking portion moves upward along the inner surface of the first rising side.
The method for preventing a round case from falling according to any one of claims 1 to 3.