JPH0361100U - - Google Patents
Info
- Publication number
- JPH0361100U JPH0361100U JP12055289U JP12055289U JPH0361100U JP H0361100 U JPH0361100 U JP H0361100U JP 12055289 U JP12055289 U JP 12055289U JP 12055289 U JP12055289 U JP 12055289U JP H0361100 U JPH0361100 U JP H0361100U
- Authority
- JP
- Japan
- Prior art keywords
- ladder
- locking member
- side frame
- locking
- tier
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Movable Scaffolding (AREA)
- Ladders (AREA)
Description
第１図は本考案を実施するスライド式多段梯子
の一例の収容状態の断面図、第２図は第１図の多
段梯子の収容状態の側面図、第３図は本考案の一
実施例における最上段の梯子と２段目の梯子のロ
ツク機構を説明する断面図、第４図は本考案の一
実施例における２段目の梯子と３段目の梯子のロ
ツク機構を説明する断面図、第５図は上段側の梯
子を下段側の梯子から引き出す機構及びロツク機
構の解除機構を示す説明図、第６図は本考案を実
施例する折り畳み式多段梯子の一例の伸長状態の
側面図、第７図Ａ，Ｂは本考案のロツク機構の別
の実施例の構成、動作を示す部分断面図、第８図
Ａ，Ｂは本考案のロツク機構の更に別の実施例の
構成、動作を示す部分断面図、第９図Ａは従来の
折り畳み式の３連梯子の構成を示す側面図、第９
図ＢはＡのＺ部の詳細な構成を示す部分拡大側面
図である。
１０……最上段の梯子、１１……横桟、１２，
１３……サイドフレーム、１４，１５……係止片
、１６，１７……把手、１８……ばね、２０……
２段目の梯子、２１……横桟、２２，２３……サ
イドフレーム、２４，２５……係止片、２６，２
７……把手、２８，２９……係止突起、３０……
最下段の梯子、２１……横桟、３２，３３……サ
イドフレーム、３８，３９……係止孔、４０……
滑車、４１……ロープ、５１，５８……牽引ワイ
ヤ、７０……リーフばね、８０……ブラケツト。
Fig. 1 is a sectional view of an example of a sliding multi-step ladder embodying the present invention in an accommodated state, Fig. 2 is a side view of the multi-step ladder of Fig. 1 in an accommodated state, and Fig. 3 is an example of an embodiment of the present invention. FIG. 4 is a sectional view illustrating the locking mechanism of the top ladder and the second ladder; FIG. 4 is a sectional view explaining the locking mechanism of the second ladder and the third ladder in an embodiment of the present invention; FIG. 5 is an explanatory diagram showing a mechanism for pulling out the upper ladder from the lower ladder and a mechanism for releasing the lock mechanism; FIG. 6 is a side view of an example of a folding multi-tier ladder embodying the present invention in an extended state; 7A and 7B are partial sectional views showing the structure and operation of another embodiment of the locking mechanism of the present invention, and FIGS. 8A and 8B are partial sectional views showing the structure and operation of yet another embodiment of the locking mechanism of the present invention. FIG. 9A is a side view showing the configuration of a conventional folding triple ladder.
Figure B is a partially enlarged side view showing the detailed configuration of the Z section of A. 10...Top ladder, 11...Horizontal rung, 12,
13... Side frame, 14, 15... Locking piece, 16, 17... Handle, 18... Spring, 20...
2nd step ladder, 21... Horizontal beam, 22, 23... Side frame, 24, 25... Locking piece, 26, 2
7... Handle, 28, 29... Locking protrusion, 30...
Bottom ladder, 21... Horizontal beam, 32, 33... Side frame, 38, 39... Locking hole, 40...
Pulley, 41... rope, 51, 58... traction wire, 70... leaf spring, 80... bracket.
Claims (1)
梯子とから構成される伸縮可能な多段梯子であつ
て、上段側の子梯子は次段の梯子のフレームの内
側にスライド可能或いは回転可能に設けられ、上
段側の子梯子は伸長時にそのサイドフレームから
係止部材を突出させ、この係止部材を次段の梯子
の内側に設けられた係止溝或いは係止孔に係合さ
せて上段側の子梯子を次段の梯子にロツクするよ
うに構成された多段梯子において、 前記係止部材を付勢部材により常時はその先端
部が前記サイドフレームから外に突出するように
構成すると共に、前記付勢部材または前記係止部
材に牽引ワイヤに取り付け、収縮させる時にこの
ワイヤを引つ張ることにより、前記係止部材がサ
イドフレーム内に没入するように構成したことを
特徴とする多段梯子。[Claims for Utility Model Registration] A retractable multi-tier ladder consisting of a parent ladder located at the lowest level and at least one child ladder, where the child ladder on the upper level is located inside the frame of the next ladder. When the upper ladder is extended, a locking member protrudes from its side frame, and this locking member is inserted into a locking groove or a locking member provided inside the next ladder. In a multi-tier ladder configured to lock an upper ladder to the next ladder by engaging with a hole, the locking member is normally driven by a biasing member such that its distal end protrudes outward from the side frame. Further, by attaching a traction wire to the biasing member or the locking member and pulling the wire when contracting, the locking member is recessed into the side frame. A multi-step ladder featuring
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12055289U JPH0361100U (en) | 1989-10-17 | 1989-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12055289U JPH0361100U (en) | 1989-10-17 | 1989-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0361100U true JPH0361100U (en) | 1991-06-14 |
Family
ID=31668625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12055289U Pending JPH0361100U (en) | 1989-10-17 | 1989-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0361100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006151061A (en) * | 2004-11-26 | 2006-06-15 | Universal Shipbuilding Corp | Inspection device for hold side wall structure member |
| JP2009540257A (en) * | 2006-06-05 | 2009-11-19 | アルファ ラヴァル コーポレイト アクチボラゲット | Plates and gaskets for plate heat exchangers |
-
1989
- 1989-10-17 JP JP12055289U patent/JPH0361100U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006151061A (en) * | 2004-11-26 | 2006-06-15 | Universal Shipbuilding Corp | Inspection device for hold side wall structure member |
| JP2009540257A (en) * | 2006-06-05 | 2009-11-19 | アルファ ラヴァル コーポレイト アクチボラゲット | Plates and gaskets for plate heat exchangers |
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