JPH1061138A - Movable stairs - Google Patents
Movable stairsInfo
- Publication number
- JPH1061138A JPH1061138A JP8235820A JP23582096A JPH1061138A JP H1061138 A JPH1061138 A JP H1061138A JP 8235820 A JP8235820 A JP 8235820A JP 23582096 A JP23582096 A JP 23582096A JP H1061138 A JPH1061138 A JP H1061138A
- Authority
- JP
- Japan
- Prior art keywords
- movable
- stairs
- support
- spring
- staircase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Ladders (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、作業者が立坑よ
り地中の洞道内に出入りするため、立坑に設けた昇降用
の階段を含む適宜の上部階段又は支持体と、その下方の
床面とを連結する階段の上端を、上記上部階段の下端又
は支持体の一端に回転自在に支持した可動式階段に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an appropriate upper staircase or support including an ascending and descending staircase provided in a shaft, and a floor surface therebelow for allowing a worker to enter and exit an underground passageway from a shaft. And a movable staircase in which the upper end of a staircase connecting the upper and lower stairs is rotatably supported on the lower end of the upper staircase or one end of a support.
【0002】[0002]
【従来の技術】従来この種の階段は、実開平5−743
81号の可動式階段に示すごとく、ケーブル等を布設し
た洞道50内に降りる階段を立坑51に設け、この階段
は多数のステップを有する階段部52とこの階段部52
の一側に手摺り53を有して成り、上記階段部52と手
摺り53とを分離し、上記階段部52の上部を立坑又は
適宜の固定物に軸支し、当該階段部52のみを略水平位
置まで回動自在に設け、この階段部52の裏側に、作業
者が通過できる間隔をあけて二本の支柱54を立て、こ
れらの二本の各支柱54に一端を支持し、他端を上記階
段部52の両側に支持したガススプリング55を設け、
これらのガススプリング55により階段部52は少なく
とも略水平位置及び下端を洞道等の床に当接又は近接さ
せた傾斜位置でその状態を保持できる構成としている。2. Description of the Related Art Conventionally, this kind of stairs is disclosed in Japanese Utility Model Laid-Open No. 5-743.
As shown in a movable staircase of No. 81, a stairway descending into a cave 50 on which cables and the like are laid is provided in a shaft 51, and this staircase includes a staircase 52 having a number of steps and a staircase 52 having a number of steps.
Has a handrail 53 on one side, separates the staircase 52 and the handrail 53, supports the upper part of the staircase 52 on a shaft or an appropriate fixed object, and It is rotatably provided to a substantially horizontal position, and two columns 54 are erected on the back side of the stairs 52 at intervals so that an operator can pass therethrough. One end is supported by each of these two columns 54, A gas spring 55 whose ends are supported on both sides of the step 52 is provided,
With these gas springs 55, the staircase 52 is configured to be able to maintain its state at least at a substantially horizontal position and an inclined position where the lower end abuts or approaches a floor such as a sinus road.
【0003】従って階段の手摺り部は固定されて、階段
部の一側にあるため、作業者はこの手摺り部に手を掛け
て昇降することができる。また不要時は当該階段部を回
動させて洞道等の上部に略水平に上げておくことがで
き、手摺り部は固定されているが、洞道等の長手方向に
平行しているため、洞道内等を作業者が通行する際、当
該階段部や手摺り部が邪魔にならない。また当該階段部
の裏側に二本の支柱を立て、これらの二本の各支柱と上
記階段部の裏面両側に支持したガススプリングを設けて
いるため、当該ガススプリングの付勢で当該階段部を略
水平位置に支持でき、また上記ガススプリングの力に抗
して当該階段の自重で下端を洞道等の床に当接又は近接
させた傾斜位置でその状態を保持でき、当該階段部を階
段の上からでも、洞道等の床からでも作業者が容易に動
かすことができる。また当該階段部の裏側に二本の支柱
を立てているが、これらの二本の支柱の間隔が作業者が
通過できるものであるため、作業者はこれらの二本の支
柱の間を通過できるものである。[0003] Therefore, since the handrail portion of the stairs is fixed and located on one side of the staircase portion, the operator can lift and lower the handrail portion by holding his hand. Also, when not needed, the stairs can be rotated to be raised almost horizontally above the cave, etc., and the handrail is fixed, but is parallel to the longitudinal direction of the cave, etc. The stairs and handrails do not obstruct the passage of the operator through the cave. In addition, since two pillars are erected on the back side of the stair portion, and these two pillars and gas springs supported on both sides of the back surface of the stair portion are provided, the stair portion is biased by the gas spring. It can be supported at a substantially horizontal position, and can hold its state at an inclined position where the lower end abuts or approaches a floor such as a sinus by its own weight against the force of the gas spring. The operator can easily move the device from above or from a floor such as a cave. In addition, two pillars are erected on the back side of the stairs, but since the distance between the two pillars is such that the worker can pass, the worker can pass between these two pillars. Things.
【0004】[0004]
【発明が解決しようとする課題】しかしながら上記従来
の可動式階段は、階段部を上に上げても、手摺りや支柱
が洞道内に残り、洞道内の作業者の通行は可能である
が、通行スペースが狭くなるため、不便であった。また
上記階段部を下げる場合はガススプリングの伸長する力
に抗して下げるが、その途中で階段の自重により階段が
自動的に下がる。また当該階段部を上げる場合、階段部
の自重に抗して持ち上げれば、その途中からガススプリ
ングの力で持ち上がる。しかしながより小さな力でこの
階段部を持ち上げるため、この階段部の自重に抗して持
ち上げる距離を小さくするには実際に取り付ける各階段
部によって夫々ガススプリングの位置の調製が必要であ
り、これが難しく、一旦固定してからでは調製できな
い。However, in the above-mentioned conventional movable stairs, even if the stairs are raised, the handrails and columns remain in the cave, so that workers in the cave can pass. It was inconvenient because the space was small. When the stairs are lowered, the stairs are lowered against the elongating force of the gas spring, but the stairs are automatically lowered on the way due to the weight of the stairs. When the stairs are lifted against the weight of the stairs, the stairs are lifted from the middle by the force of the gas spring. However, since the stairs are lifted with a smaller force, it is necessary to adjust the position of the gas spring by each actually installed stairs in order to reduce the lifting distance against the own weight of the stairs. It is difficult and cannot be prepared once fixed.
【0005】そこでこの発明はこれらの点に鑑みてなさ
れたものであり、可動の階段部を上方に持ち上げた際は
この階段部の下方に何も残らず、スペースを広く保持で
き、かつ階段部の自重に抗して持ち上げる距離をできる
だけ小さくするためのスプリングの取付け位置の調製が
極めて容易な可動式階段を提供して上記課題を解決しよ
うとするものである。Accordingly, the present invention has been made in view of these points, and when the movable staircase is lifted upward, nothing remains below the staircase, so that a large space can be maintained and the staircase can be maintained. An object of the present invention is to provide a movable staircase in which it is extremely easy to adjust a mounting position of a spring for minimizing a lifting distance against its own weight.
【0006】[0006]
【課題を解決するための手段】請求項1項の発明は、適
宜の上部階段又は支持体とその下方の床面とを連結する
階段の上端を上記上部階段の下端又は支持体の一端に回
転自在に支持した可動階段において、当該可動階段の支
持点より下方の上記上部階段又は支持体に一端を回転自
在に支持し、他端を当該可動階段に回転自在に支持した
スプリングを設け、当該可動階段の支持点とスプリング
の両端の支持点とにより三角形を形成するようにし、当
該スプリングの付勢により当該可動階段を略水平位置に
保持させ、また当該スプリングの付勢に抗して当該可動
階段の自重により当該可動階段の下端を床面に当接又は
近接させた傾斜位置でその状態を保持できるようにし、
上記スプリングの上部支持点位置を、略水平方向に調製
可能にした、可動式階段とした。According to the first aspect of the present invention, the upper end of an appropriate upper stair or a stair connecting the support to the floor below it is rotated to the lower end of the upper stair or one end of the support. In the movable stairs freely supported, one end is rotatably supported by the upper stairs or the support below the support point of the movable stairs, and a spring is rotatably supported at the other end by the movable stairs. The support point of the stairs and the support points at both ends of the spring form a triangle, the movable stairs are held in a substantially horizontal position by the bias of the spring, and the movable stairs are opposed to the bias of the spring. By the weight of the movable stairs, so that the lower end of the movable stairs can maintain its state at an inclined position in contact with or close to the floor surface,
The position of the upper support point of the spring is a movable staircase that can be adjusted in a substantially horizontal direction.
【0007】上記請求項1項の発明において、可動階段
の使用時には、スプリングの力に抗して当該可動階段の
自重でその下端が床面に当接又は近接している。従って
作業者は階段の昇降が容易である。また不要時は当該可
動階段をその自重に抗して持ち上げると、すぐにスプリ
ングの力により当該階段は回動して略水平に上げておく
ことができる。その際当該階段の下方の床面には何も残
らない。またこの可動階段の自重に抗して持ち上げる距
離を小さくするため、上記スプリングの上部支持点位置
を水平方向に動かすことによりスプリングの傾斜度合い
の調製が可能である。According to the first aspect of the present invention, when the movable stairs are used, the lower end of the movable stairs abuts or approaches the floor surface by its own weight against the force of the spring. Therefore, the worker can easily go up and down the stairs. When unnecessary, when the movable stairs are lifted against its own weight, the stairs can be immediately rotated by the force of the spring and raised almost horizontally. Nothing remains on the floor below the stairs. In addition, in order to reduce the distance that the movable stairs are lifted against their own weight, the inclination of the spring can be adjusted by moving the position of the upper support point of the spring in the horizontal direction.
【0008】また請求項2項の発明は、適宜の上部階段
又は支持体とその下方の床面とを連結する階段の上端を
上記上部階段の下端又は支持体の一端に回転自在に支持
した可動階段において、当該可動階段の支持点より下方
の上記上部階段又は支持体に水平方向に一定巾移動自在
に取り付けた上部受け金具に一端を回転自在に支持し、
他端を当該可動階段に取り付けた下部受け金具に回転自
在に支持したスプリングを設け、当該可動階段の支持点
とスプリングの両端の支持点とにより三角形を形成する
ようにし、当該スプリングの付勢により当該可動階段を
略水平位置に保持させ、また当該スプリングの付勢に抗
して当該可動階段の自重により当該可動階段の下端を床
面に当接又は近接させた傾斜位置でその状態を保持でき
るようにし、上記上部階段又は支持体に水平に軸支した
調製ボルトの先端で上記スプリングの上部受け金具を押
圧した、可動式階段とした。従って調製ボルトを回すこ
とにより、上部受け金具の位置をずらし、スブリングの
上部支持点を移動可能にしている。According to a second aspect of the present invention, there is provided a movable step in which an upper end of a stair connecting an appropriate upper stair or a support and a floor surface thereunder is rotatably supported by a lower end of the upper stair or one end of the support. In the stairs, one end is rotatably supported by an upper receiving bracket attached to the upper stairs or the support below the support point of the movable stairs so as to be movable by a fixed width in the horizontal direction,
A spring whose other end is rotatably supported by a lower bracket attached to the movable stairs is provided, and a triangle is formed by the support points of the movable stairs and the support points at both ends of the spring. The movable stairs can be held at a substantially horizontal position, and the state can be held at an inclined position where the lower end of the movable stairs abuts or approaches the floor surface by the weight of the movable stairs against the bias of the spring. In this manner, a movable staircase was obtained in which the upper receiving bracket of the spring was pressed with the tip of a preparation bolt horizontally supported on the upper staircase or the support. Therefore, by turning the adjusting bolt, the position of the upper receiving bracket is shifted, and the upper supporting point of the spring can be moved.
【0009】[0009]
【実施の形態例】以下この発明の実施の形態例を図につ
いて説明する。図1及び図2はこの発明の可動式階段の
正面図及び側面図であり、床面1から一定間隔上方の側
壁面2に支持した水平な踊り場から成る支持体3を設
け、この支持体3には手摺り3aを有している。この支
持体3の両側一端に可動階段4の上端両側を軸支し、当
該可動階段4の下端両側を床面1に当接している。この
可動階段4は両側に手摺り5を有し、またこの可動階段
4の裏面には一本のガイド杆6が設けられている。この
可動階段4の上部両側にはガススプリング7が夫々設け
られている。これらの各ガススプリング7はその一端が
上記可動階段4の軸支部より下方の支持体3に回転自在
に支持され、また他端が可動階段4の側面に回転自在に
支持されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a front view and a side view, respectively, of a movable staircase according to the present invention. A support 3 composed of a horizontal landing supported on a side wall 2 at a predetermined interval above a floor 1 is provided. Has a handrail 3a. The upper end of the movable staircase 4 is pivotally supported at one end on both sides of the support 3, and the lower end both sides of the movable staircase 4 are in contact with the floor surface 1. The movable staircase 4 has handrails 5 on both sides, and a single guide rod 6 is provided on the back surface of the movable staircase 4. Gas springs 7 are provided on both sides of the upper part of the movable stairs 4 respectively. One end of each of the gas springs 7 is rotatably supported by the support 3 below the pivotal support of the movable stairs 4, and the other end is rotatably supported by the side surface of the movable stairs 4.
【0010】また図3及び図4は夫々可動階段4の正面
図及び手摺り5の正面図である。上記可動階段4は両側
の枠体4aの間に多数の水平なステップ4bが設けられ
ており、また各枠体4aで上記手摺り5を支持してい
る。またこの可動階段4の上端には支持金具8を有し、
この支持金具8の上部にピン穴8aを穿っている。また
これらの各手摺り5の上部にバランサ5a及びはハンド
ル5bを設けている。FIGS. 3 and 4 are a front view of the movable staircase 4 and a front view of the handrail 5, respectively. The movable stairs 4 are provided with a number of horizontal steps 4b between the frame members 4a on both sides, and the handrails 5 are supported by each frame member 4a. In addition, a support bracket 8 is provided at the upper end of the movable staircase 4,
A pin hole 8a is formed in the upper part of the support fitting 8. A balancer 5a and a handle 5b are provided above each of the handrails 5.
【0011】図5乃至図11は上記ガススプリング7の
取付け構造の詳細を示す。上記支持体3の両側一端には
張出し板9を突設し、この張出し板9の外面に上部受け
金具10の基板10aを重合し、この基板10aの一端
に設けた孔及び張出し板9の孔にボルト11を通し、さ
らにこのボルト11は上記可動階段4の支持金具8のピ
ン穴8aを通して他端をナット12で螺着している。ま
た上部受け金具10の基板10aには上記ボルト11を
中心とした円弧孔13が設けられ、この円弧孔13に上
記張出し板9から突出したボルト14を通してナット1
5を螺着している。従ってこの張出し板9に上部受け金
具10を固定する際、上記ボルト11を中心に上部受け
金具10を回して、その位置を調製することができる。FIGS. 5 to 11 show details of the mounting structure of the gas spring 7. FIG. An overhanging plate 9 is projected from one end on both sides of the support 3, and the substrate 10 a of the upper receiving bracket 10 is superimposed on the outer surface of the overhanging plate 9. , And the other end of the bolt 11 is screwed through a pin hole 8 a of the support fitting 8 of the movable staircase 4 with a nut 12. The base 10a of the upper receiving member 10 is provided with an arc hole 13 centered on the bolt 11, and the nut 1 is passed through the arc hole 13 through a bolt 14 protruding from the overhang plate 9.
5 is screwed. Therefore, when fixing the upper receiving member 10 to the overhang plate 9, the position of the upper receiving member 10 can be adjusted by turning the upper receiving member 10 about the bolt 11.
【0012】また上記上部受け金具10の基板10aの
他端には当て板16が立設し、この当て板16の一側
に、上部受け金具10の基板10aと夫々平行する二枚
の軸受板17、17が突設している。また上記張出し板
9には鍵型板18を立設し、この鍵型板18の孔にネジ
穴を合わせて固定した固定ナット19に調製ボルト20
を螺着して鍵型板18を貫通し、調製ボルト20の端部
を上記上部受け金具10の当て板16に当接自在として
いる。また調製ボルト20にはナット21を螺着してい
る。At the other end of the substrate 10a of the upper receiving member 10, a backing plate 16 is erected. On one side of the backing plate 16, two bearing plates parallel to the substrate 10a of the upper receiving member 10 are provided. 17 and 17 are protrudingly provided. A key-shaped plate 18 is erected on the overhanging plate 9, and a prepared nut 20 is fixed to a fixing nut 19 fixed with a screw hole aligned with a hole of the key-shaped plate 18.
Is screwed through and penetrates the key plate 18 so that the end of the preparation bolt 20 can freely contact the abutment plate 16 of the upper receiving fitting 10. A nut 21 is screwed onto the preparation bolt 20.
【0013】また上記可動階段4の枠体4aには下部受
け金具22が設けられている。この下部受け金具22は
その基板22aを枠体4aに重合し、この基板22aに
設けた二つの長孔23、23に夫々ネジ24、24を通
して固定している。そしてこの基板22aの一側から鍵
型板22bを立設し、この鍵型板22bの一側から基板
22aに平行な二枚の軸受板25、25を突設したもの
である。また上記ガススプリング7は二つのものを平行
に並べ、これらの両端の各端部から突出した突板7a、
7aの間に箱型枠体26を夫々設けて、ボルトで固定し
ている。A lower support 22 is provided on the frame 4a of the movable staircase 4. The lower bracket 22 has its substrate 22a superimposed on the frame 4a, and is fixed to two long holes 23, 23 provided in the substrate 22a through screws 24, 24, respectively. A key-shaped plate 22b is erected from one side of the substrate 22a, and two bearing plates 25, 25 parallel to the substrate 22a are protruded from one side of the key-shaped plate 22b. The gas spring 7 is composed of two gas springs arranged in parallel, and a protruding plate 7a protruding from each end of both ends.
The box frame bodies 26 are provided between 7a, respectively, and are fixed with bolts.
【0014】そしてこれらの箱型枠体26、26を夫々
上記上部受け金具10の二枚の軸受板17と17との間
及び上記下部受け金具22の二枚の軸受板25と25の
間に挾み、夫々これらの軸受板17、17と箱型枠体2
6及び軸受板25、25と箱型枠体26を貫通した軸支
ピン27、27で回転自在に支持している。また上記二
つのガススプリング7、7の間にはこれらに平行したガ
イド棒29が設けられ、このガイド棒29の両端は上記
二つの箱型枠体26を貫通し、一端は固定され、他端は
箱型枠体26の外方に突出しており、その端部にはスト
ッパー用鍔30が固定されている。The box frame members 26 are placed between the two bearing plates 17 of the upper receiving member 10 and between the two bearing plates 25 of the lower receiving member 22, respectively. Each of these bearing plates 17 and 17 and the box frame 2
6 and the bearing plates 25, 25 and the box frame 26 are rotatably supported by shaft support pins 27, 27 penetrating therethrough. A guide rod 29 is provided between the two gas springs 7 and 7 in parallel with the two gas springs 7. Both ends of the guide rod 29 penetrate the two box frames 26, one end is fixed, and the other end is fixed. Protrudes outward from the box frame 26, and a stopper flange 30 is fixed to an end thereof.
【0015】そして上記可動階段4はその上端に設けた
支持金具8のピン穴8aに上記ボルト11を遊貫させて
いるため、このボルト11を中心に回転自在である。ま
た上記上部受け金具10の二枚の軸受板17、17及び
これらの軸受板17に挾まれた箱型枠体26を貫通する
軸支ピン27の位置は、常に上記可動階段4の軸支部た
るボルト11より下方に位置し、上記ボルト11とガス
スプリング7の上下の軸支ピン27と27とで扁平な三
角形を形成している。The movable stairs 4 are rotatable about the bolts 11 because the bolts 11 pass through the pin holes 8a of the support fittings 8 provided at the upper ends thereof. The positions of the two bearing plates 17, 17 of the upper receiving member 10 and the bearing pins 27 passing through the box frame 26 sandwiched between these bearing plates 17 are always the bearing portions of the movable staircase 4. Located below the bolt 11, the bolt 11 and the upper and lower pivot pins 27 of the gas spring 7 form a flat triangle.
【0016】そして上記ガススプリング7は常時伸長す
るよう付勢され、可動階段4をの自由端を常時上げよう
としているが、可動階段4の自重で下端が床面1に当接
している。そしてこの可動階段4を支持体3の上から又
は床面1から持ち上げると、床面1から一定の位置を超
えるとガススプリング7の力で上昇し、図1の一点鎖線
で示すように支持体3の高さで略水平になる。これによ
り床面1の上方に可動階段4が位置し、その下方には何
もなく、作業者等は通行をスムーズにできる。そしてこ
の可動階段4を降ろすには、支持体3の上からは手摺り
5を持って、また床面からはガイド杆6を持って可動階
段4を上記ガススプリング7の力に抗して降ろす。そし
て床面1から一定の位置より下がると可動階段4の自重
で床面1まで降りる。The gas spring 7 is constantly urged to extend, and the free end of the movable staircase 4 is constantly raised, but the lower end of the movable staircase 4 is in contact with the floor surface 1 by its own weight. When the movable stairs 4 are lifted from above the support 3 or from the floor 1, when the movable stairs 4 exceed a certain position from the floor 1, they rise by the force of the gas spring 7, and as shown by the dashed line in FIG. It becomes almost horizontal at the height of 3. As a result, the movable staircase 4 is located above the floor surface 1, and there is nothing below the movable staircase 4, so that workers and the like can pass smoothly. To move down the movable stairs 4, hold the handrail 5 from above the support body 3 and hold the guide rod 6 from the floor surface to lower the movable stairs 4 against the force of the gas spring 7. . Then, when descending from the floor 1 below a certain position, the movable staircase 4 descends to the floor 1 by its own weight.
【0017】この可動階段の取付けに際して、上記可動
階段4の自重での回動とガススプリング7の付勢力によ
る回動の分岐点をどこに取るかの調製ができる。これに
は上記上部受け金具10のナット15をゆるめ、ボルト
11に対して上部受け金具10を回転自在にしておき、
上記調製ボルト20を回転させて、当て板16の位置を
水平方向にずらす。これによりガススプリング7の傾斜
度合いが変わり、上記分岐点が調製できる。これは取り
付ける可動階段毎に取付け位置や重さがことなるため、
上記分岐点位置の調製が必要となる。調製後に上記調製
ボルト20のナット21を鍵型板18に締付けて調製ボ
ルト20を固定し、さらに上記ナット15を締め付け、
上部受け金具10の位置を固定する。In mounting the movable stairs, it is possible to adjust where the branch point between the rotation of the movable stairs 4 by its own weight and the rotation by the urging force of the gas spring 7 is taken. To do this, loosen the nut 15 of the upper bracket 10 so that the upper bracket 10 is rotatable with respect to the bolt 11,
By rotating the adjusting bolt 20, the position of the contact plate 16 is shifted in the horizontal direction. Thereby, the degree of inclination of the gas spring 7 changes, and the branch point can be adjusted. This is because the mounting position and weight differ for each movable staircase to be mounted,
It is necessary to adjust the position of the branch point. After the preparation, the nut 21 of the preparation bolt 20 is tightened to the key plate 18 to fix the preparation bolt 20, and the nut 15 is further tightened.
The position of the upper bracket 10 is fixed.
【0018】なお上記実施の形態例では踊り場等の水平
な支持体と床面との間に可動階段を取り付けたが、これ
に限らず、床面から離れた上部階段の下端と床面との間
に取り付けても良い。また上記実施の形態例ではガスス
プリングを用いたが、これに限らず適宜のスプリングで
あれば良い。またスプリングを回転自在に支持する上部
受け金具や下部受け金具等も適宜のものでよい。In the above-described embodiment, the movable stairs are mounted between the floor and the horizontal support such as a landing. However, the present invention is not limited to this. It may be attached in between. Further, in the above embodiment, a gas spring is used, but the present invention is not limited to this, and any suitable spring may be used. Also, an upper receiving member, a lower receiving member, and the like for rotatably supporting the spring may be appropriately provided.
【0019】[0019]
【発明の効果】請求項1項の発明は、可動階段は階段状
のステップを有するため、安全に昇降することができ
る。また不要時は当該階段部を回動させて略水平に上げ
ておくことができ、この状態では床面に何もなく、当該
箇所を作業者等が通行する際、邪魔にならない。しかも
この可動階段はスプリングの伸長する付勢力によりその
水平位置を保持でき、また階段の自重によりその下端を
床面に当接又は近接した状態を保持できるため、この可
動階段を上げたり下げたりするのに大きな力を要せず、
かつ階段の上からでも下からでも容易に操作できる。According to the first aspect of the present invention, the movable stairs have stair-like steps, so that they can safely go up and down. When not required, the stairs can be turned up to be substantially horizontal by rotating the stairs. In this state, there is nothing on the floor surface and it does not become an obstacle when a worker or the like passes through the place. Moreover, the movable stairs can be held in its horizontal position by the urging force of the spring, and the lower end can be kept in contact with or close to the floor surface by the weight of the stairs, so that the movable stairs can be raised or lowered. Does not require much power,
And it can be easily operated from above or below the stairs.
【0020】また当該可動階段の取り付けに際し、当該
可動階段の自重での回動とスプリングの付勢力による回
動の分岐点をどこに取るかの調製ができ、従って階段の
自重に抗して持ち上げる力をできるだけ少なくすること
ができる。それ故取り付ける可動階段に応じて夫々取り
付け位置が調製でき、少ない力で容易に階段の操作がで
きる。Further, when the movable stairs are mounted, it is possible to adjust where the branch point of the rotation of the movable stairs by its own weight and the rotation by the biasing force of the spring is to be taken. Can be reduced as much as possible. Therefore, the mounting position can be adjusted according to the movable stairs to be mounted, and the stairs can be easily operated with a small force.
【0021】また請求項2項の発明は、上記請求項1項
の発明と同様な効果を有するが、当該可動階段の自重で
の回動とスプリングの付勢力による回動の分岐点をどこ
に取るかの調製が、調製ボルトを回すだけででき、調製
操作がより簡単である。The invention of claim 2 has the same effect as that of the invention of claim 1, except where the branch point between the rotation of the movable stairs by its own weight and the rotation by the biasing force of the spring is taken. The preparation can be performed simply by turning the preparation bolt, and the preparation operation is simpler.
【図1】この発明の実施の形態例の可動階段の取り付け
状態を示す正面図である。FIG. 1 is a front view showing an attached state of a movable staircase according to an embodiment of the present invention.
【図2】この発明の実施の形態例の可動階段の取り付け
状態を示す側面図である。FIG. 2 is a side view showing an attached state of the movable staircase according to the embodiment of the present invention.
【図3】この発明の実施の形態例の可動階段の正面図で
ある。FIG. 3 is a front view of a movable staircase according to the embodiment of the present invention.
【図4】この発明の実施の形態例の可動階段の手摺りの
正面図である。FIG. 4 is a front view of a handrail of a movable staircase according to the embodiment of the present invention.
【図5】この発明の実施の形態例の可動階段を軸支する
支持体箇所の正面図である。FIG. 5 is a front view of a support portion that supports the movable staircase according to the embodiment of the present invention.
【図6】この発明の実施の形態例の可動階段の軸支箇所
の要部正面図である。FIG. 6 is a front view of a main part of a pivot support portion of the movable staircase according to the embodiment of the present invention.
【図7】この発明の実施の形態例の可動階段の軸支箇所
の要部平面図である。FIG. 7 is a plan view of a main part of a pivot support portion of the movable staircase according to the embodiment of the present invention.
【図8】この発明の実施の形態例の可動階段のガススプ
リングの支持部材を示す正面図である。FIG. 8 is a front view showing a support member of the gas spring of the movable staircase according to the embodiment of the present invention.
【図9】この発明の実施の形態例の可動階段のガススプ
リングを支持する上部受け金具の側面図である。FIG. 9 is a side view of an upper bracket for supporting the gas spring of the movable staircase according to the embodiment of the present invention.
【図10】この発明の実施の形態例の可動階段のガスス
プリングを支持する上部受け金具の平面図である。FIG. 10 is a plan view of an upper bracket for supporting the gas spring of the movable staircase according to the embodiment of the present invention.
【図11】この発明の実施の形態例の可動階段のガスス
プリングを支持する下部受け金具の側面図である。FIG. 11 is a side view of a lower bracket for supporting the gas spring of the movable staircase according to the embodiment of the present invention.
【図12】従来例の可動階段を示す正面図である。FIG. 12 is a front view showing a conventional movable staircase.
1 床面 3 支持体 4 可動階段 5 手摺り 7 ガススプリング 8 支持金具 9 張出し板 10 上部受け金具 11 ボルト 13 円弧孔 14 ボルト 15 ナット 16 当て板 17 軸支板 18 鍵型板 19 固定ナット 20 調製ボルト 22 下部受け金
具 25 軸受板 26 箱型枠体 27 軸支ピンREFERENCE SIGNS LIST 1 floor surface 3 support 4 movable stairs 5 handrail 7 gas spring 8 support fitting 9 overhang plate 10 upper receiving fitting 11 bolt 13 arc hole 14 bolt 15 nut 16 backing plate 17 shaft support plate 18 key plate 19 fixing nut 20 preparation Bolt 22 Lower bracket 25 Bearing plate 26 Box form 27 Shaft support pin
Claims (2)
床面とを連結する階段の上端を上記上部階段の下端又は
支持体の一端に回転自在に支持した可動階段において、
当該可動階段の支持点より下方の上記上部階段又は支持
体に一端を回転自在に支持し、他端を当該可動階段に回
転自在に支持したスプリングを設け、当該可動階段の支
持点とスプリングの両端の支持点とにより三角形を形成
するようにし、当該スプリングの付勢により当該可動階
段を略水平位置に保持させ、また当該スプリングの付勢
に抗して当該可動階段の自重により当該可動階段の下端
を床面に当接又は近接させた傾斜位置でその状態を保持
できるようにし、上記スプリングの上部支持点位置を、
略水平方向に調製可能にしたことを特徴とする、可動式
階段。1. A movable staircase in which an upper end of an appropriate upper stair or a stair connecting a support and a floor surface therebelow is rotatably supported on a lower end of the upper stair or one end of the support.
A spring having one end rotatably supported by the upper stairs or the support below the support point of the movable stairs and the other end rotatably supported by the movable stairs is provided, and the support point of the movable stairs and both ends of the spring are provided. And the supporting point of the movable stairs is held in a substantially horizontal position by the bias of the spring, and the lower end of the movable staircase is held by its own weight against the bias of the spring. In contact with or close to the floor so that the state can be maintained, and the upper support point position of the spring,
A movable staircase characterized in that it can be adjusted in a substantially horizontal direction.
床面とを連結する階段の上端を上記上部階段の下端又は
支持体の一端に回転自在に支持した可動階段において、
当該可動階段の支持点より下方の上記上部階段又は支持
体に水平方向に一定巾移動自在に取り付けた上部受け金
具に一端を回転自在に支持し、他端を当該可動階段に取
り付けた下部受け金具に回転自在に支持したスプリング
を設け、当該可動階段の支持点とスプリングの両端の支
持点とにより三角形を形成するようにし、当該スプリン
グの付勢により当該可動階段を略水平位置に保持させ、
また当該スプリングの付勢に抗して当該可動階段の自重
により当該可動階段の下端を床面に当接又は近接させた
傾斜位置でその状態を保持できるようにし、可動階段の
支持点より下方の上記上部階段又は支持体において、上
記上部階段又は支持体に水平に軸支した調製ボルトの先
端で上記スプリングの上部受け金具を押圧したことを特
徴とする、可動式階段。2. A movable staircase in which an upper end of an appropriate upper stair or a stair connecting a support and a floor surface therebelow is rotatably supported on a lower end of the upper stair or one end of the support.
One end is rotatably supported by an upper receiving bracket attached to the upper stairs or the support below the supporting point of the movable stairs so as to be movable by a fixed width in the horizontal direction, and the lower receiving bracket is attached at the other end to the movable stairs. A rotatably supported spring is provided, so that a triangle is formed by the support points of the movable stairs and the support points at both ends of the spring, and the movable stairs are held in a substantially horizontal position by the bias of the spring,
In addition, the movable stairs can maintain its state at an inclined position where the lower end of the movable stairs is in contact with or close to the floor surface by the weight of the movable stairs against the bias of the spring. The movable staircase, wherein the upper receiving bracket of the spring is pressed by a tip of a preparation bolt horizontally supported by the upper staircase or the support in the upper staircase or the support.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8235820A JP2934410B2 (en) | 1996-08-20 | 1996-08-20 | Movable staircase |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8235820A JP2934410B2 (en) | 1996-08-20 | 1996-08-20 | Movable staircase |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH1061138A true JPH1061138A (en) | 1998-03-03 |
JP2934410B2 JP2934410B2 (en) | 1999-08-16 |
Family
ID=16991748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8235820A Expired - Fee Related JP2934410B2 (en) | 1996-08-20 | 1996-08-20 | Movable staircase |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2934410B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101118294B1 (en) | 2004-12-24 | 2012-03-20 | 주식회사 포스코 | Device for maintaining level of stairs horizontally in a stacker boom |
CN109057197A (en) * | 2018-09-26 | 2018-12-21 | 浙江大学台州研究院 | A kind of electrodeless stair automatically adjusting step height |
CN115262881A (en) * | 2022-08-17 | 2022-11-01 | 中铁二十二局集团第三工程有限公司 | Modularization detachable stair |
-
1996
- 1996-08-20 JP JP8235820A patent/JP2934410B2/en not_active Expired - Fee Related
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101118294B1 (en) | 2004-12-24 | 2012-03-20 | 주식회사 포스코 | Device for maintaining level of stairs horizontally in a stacker boom |
CN109057197A (en) * | 2018-09-26 | 2018-12-21 | 浙江大学台州研究院 | A kind of electrodeless stair automatically adjusting step height |
CN109057197B (en) * | 2018-09-26 | 2023-08-25 | 浙江大学台州研究院 | Electrodeless stair capable of automatically adjusting step height |
CN115262881A (en) * | 2022-08-17 | 2022-11-01 | 中铁二十二局集团第三工程有限公司 | Modularization detachable stair |
CN115262881B (en) * | 2022-08-17 | 2023-05-26 | 中铁二十二局集团第三工程有限公司 | Modular detachable stair |
Also Published As
Publication number | Publication date |
---|---|
JP2934410B2 (en) | 1999-08-16 |
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