JP2952960B2 - Ladder device for small boats - Google Patents
Ladder device for small boatsInfo
- Publication number
- JP2952960B2 JP2952960B2 JP2130686A JP13068690A JP2952960B2 JP 2952960 B2 JP2952960 B2 JP 2952960B2 JP 2130686 A JP2130686 A JP 2130686A JP 13068690 A JP13068690 A JP 13068690A JP 2952960 B2 JP2952960 B2 JP 2952960B2
- Authority
- JP
- Japan
- Prior art keywords
- ladder
- end side
- side member
- distal end
- state
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B27/00—Arrangement of ship-based loading or unloading equipment for cargo or passengers
- B63B27/14—Arrangement of ship-based loading or unloading equipment for cargo or passengers of ramps, gangways or outboard ladders ; Pilot lifts
- B63B27/146—Pilot ladders or similar outboard ladders, e.g. bathing ladders; Pilot lifts
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、一人乗りまたは数人乗りで海上を航走す
る小型船舶のラダーステップ装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder step device for a small boat that sails on the sea with one or several passengers.
従来、エンジン付きの小型船舶であって水上を滑走す
るようにした小型ジェット推進艇などの小型船舶が広く
用いられている。この推進艇は高速で水上を滑走し、種
々の運動を行なわせるものであるが、沖合で停船して船
をベースとして水中で遊ぶというような利用の仕方もあ
る。この際に水上から人が船に乗り移る際に便利なよう
に船尾部にラダー装置を設け、このラダー装置を張り出
し状態では下端部が水中に没するようにし、かつ収納
（不使用）状態では船内に収納できるようにすることが
提案されている。例えば、第７図および第８図に示すよ
うに、船体10の船尾板11に後方に突出するステップ12を
設け、このステップ12にＬ字形のラダー13を取付け、こ
のラダー13の基端部をステップ12の中央部に係止し、張
り出し状態では踏板14を有する先端部側部材15を水面90
下に没入させ、収納状態ではこの先端部側部材15を船尾
板11に沿うように配置してステップ12上には突出物が存
在しないようにし、人がステップ12上を移動する際の邪
魔にならないようにしている。2. Description of the Related Art Conventionally, small boats, such as small jet propulsion boats that are designed to glide on water, are being widely used. This propulsion boat glides on the water at a high speed and performs various exercises, but there is also a method of using it such as stopping offshore and playing underwater on a ship basis. At this time, a ladder device is provided at the stern for convenience when a person transfers from the water to the ship. It has been proposed that it can be stored in a storage device. For example, as shown in FIGS. 7 and 8, a stern plate 11 of the hull 10 is provided with a step 12 projecting rearward, and an L-shaped ladder 13 is attached to the step 12, and the base end of the ladder 13 is In the overhang state, the front end side member 15 having the tread plate 14 is locked at the center of the step
In the retracted state, the distal end side member 15 is arranged along the stern plate 11 so that there is no protrusion on the step 12, and it is obstructed when a person moves on the step 12. I try not to be.
上記構成において、水上から人が船上に乗り移るため
に、ラダー13の踏板14に足を掛けて体を持ち上げる際に
ステップ12上に手摺がないために上り難いという問題が
ある。In the above-described configuration, there is a problem that it is difficult to climb because there is no handrail on the step 12 when lifting a body by putting a foot on the tread plate 14 of the ladder 13 because a person transfers from the water to the boat.
またこのための手摺をステップ12上に設けると、ステ
ップ12上に突出物ができて、ステップ12上を人が移動す
る際の邪魔になるという問題がある。In addition, if a handrail is provided on the step 12, there is a problem that a protruding object is formed on the step 12, which hinders a person from moving on the step 12.
この発明はこのような従来の欠点を解消するためにな
されたものであり、ステップ上に余分な突出物を形成す
ることなく、人がラダーを使用して船体上に乗り移る際
の手摺を形成する小型船舶のラダー装置を提供すること
を目的とするものである。The present invention has been made to solve such a conventional drawback, and forms a handrail when a person uses a ladder to move on a hull without forming an extra protrusion on a step. It is an object of the present invention to provide a rudder device for a small boat.
この発明は、船尾板の後側にステップが突出して設け
られ、このステップには船幅方向で水平な取付け軸が設
けられ、この取付け軸に基端部が回転可能に取付けられ
たラダーが収納状態と張り出し状態との間で位置変更可
能に保持され、このラダーは基端部側部材と先端部側部
材とを有するほぼＵ字形に構成され、上記基端部側部材
には、張り出し状態において上記取付け軸から上方に向
かって湾曲するように形成された湾曲部が設けられ、上
記先端部側部材には踏板が設けられ、ラダーの張り出し
状態では先端部側部材がステップの後側下方に突出し、
収納状態では先端部側部材が上記ステップの上方に位置
するように構成され、上記ステップには溝が形成され、
ラダー収納時にはラダーの湾曲部がこの溝に嵌入される
ように構成されているものである。According to the present invention, a step is provided on the rear side of the stern plate so as to protrude, and a horizontal mounting shaft is provided in the boat width direction, and a rudder having a base end rotatably mounted on the mounting shaft is housed in the step. The ladder is held so as to be changeable between a state and an overhanging state, and this ladder is formed in a substantially U shape having a base end side member and a distal end side member. A curved portion formed so as to be curved upward from the mounting shaft is provided, a tread plate is provided on the distal end side member, and the distal end side member protrudes downward and rearward of the step when the ladder is overhanging. ,
In the stored state, the distal end side member is configured to be located above the step, and the step is formed with a groove,
When the ladder is stored, the curved portion of the ladder is configured to fit into the groove.
上記構成では、ラダーを取付け軸回りに回転させて張
出した状態では湾曲部がステップ上に突出して人が上り
下りする際の手摺りを形成するので、人がステップ上を
移動する際、および水上の人がこのラダーを利用して船
上に上りあるいは船上から下る際には非常に便利であ
る。In the above configuration, when the ladder is rotated around the mounting axis and extended, the curved portion projects on the step and forms a handrail when a person goes up and down, so that when the person moves on the step, and It is very convenient for a person using this ladder to climb up or down from a ship.
また、ステップには溝が形成され、ラダーの収納時に
はラダーの湾曲部がこの溝に嵌入されるように構成され
ているので、ラダーの収納状態においてラダーがステッ
プ上に大きく突出することを防止して、人がステップ上
を移動する際の邪魔にならないようにすることができ
る。Also, a groove is formed in the step, and the curved portion of the ladder is configured to be fitted into this groove when the ladder is stored, so that the ladder is prevented from protruding greatly on the step in the stored state of the ladder. Thus, it is possible to prevent a person from moving on the steps.
（実施例） 第１図〜第５図において、小型船舶の船体１の船尾板
２の後側にステップ３が突出して設けられ、このステッ
プ３には船幅方向で水平な取付け軸４が設けられ、この
取付け軸４に基端部が回転可能に取付けられたラダー５
が収納状態と張り出し状態との間で位置変更可能に保持
されている。この取付け部では、一対の溝31が形成さ
れ、第５図に示すような水平断面コ字形の取付け部材44
がこの溝31の端部に嵌入され、この取付け部材44の両側
壁およびラダー５に貫通して取付け軸４が配置され、取
付け軸４の端部にナット41が螺着されて固定されてい
る。そしてこの取付け部材44がボルト49によりステップ
３に固定されている。またステップ３の上面周縁部には
滑り止め用の小突起33が形成されている。(Example) In FIGS. 1 to 5, a step 3 is provided protruding from a rear side of a stern plate 2 of a hull 1 of a small boat, and the step 3 is provided with a mounting shaft 4 which is horizontal in a boat width direction. And a ladder 5 having a base end rotatably mounted on the mounting shaft 4.
Is held so that the position can be changed between the stored state and the extended state. In this mounting portion, a pair of grooves 31 is formed, and a mounting member 44 having a horizontal U-shaped cross section as shown in FIG.
Is fitted into the end of the groove 31, the mounting shaft 4 penetrates both side walls of the mounting member 44 and the ladder 5, and the nut 41 is screwed to the end of the mounting shaft 4 and fixed. . The mounting member 44 is fixed to the step 3 by bolts 49. Further, a small protrusion 33 for preventing slip is formed on the periphery of the upper surface of step 3.
上記ラダー５は、基端部側部材51と先端部側部材52と
それらの間を接続する湾曲部50とを有するほぼＵ字形に
構成され、先端部側部材52には複数段の踏板53が設けら
れ、ラダー５の張り出し状態では先端部側部材52がステ
ップ３の後側下方に突出して水面90下に没入し、ラダー
５の収納状態では湾曲部50が溝31に嵌入されて先端部側
部材52が船尾板２に沿うように構成されている。The ladder 5 is formed in a substantially U-shape having a base end side member 51, a front end side member 52, and a curved portion 50 connecting them, and the front end side member 52 has a plurality of steps tread plates 53. When the ladder 5 is in the extended state, the distal end side member 52 protrudes rearward and downward below the step 3 and sinks below the water surface 90. When the ladder 5 is in the retracted state, the curved portion 50 is fitted into the groove 31 and the distal end side member 52 is inserted. The member 52 is configured along the stern plate 2.
またラダー５の基端部側部材51と先端部側部材52との
間には両者を連結する連結部材54が形成され、張り出し
時にはこの連結部材54がステップ３上に載置されること
によりラダー５の張り出し状態が維持されるように構成
されている。また基端部側部材51と先端部側部材52とは
末広がりに（互いに傾斜して）形成されているために、
上記ラダー５の張り出し状態では先端部側部材52が後方
に傾斜するようになる。A connecting member 54 for connecting the base member 51 and the distal member 52 of the ladder 5 is formed between the base member 51 and the distal member 52, and the connecting member 54 is placed on the step 3 when the ladder 5 is overhanging. 5 is maintained. In addition, since the base end side member 51 and the front end side member 52 are formed to be divergent (inclined with each other),
When the ladder 5 is in the extended state, the distal end side member 52 is inclined backward.
第６図はこの発明の別の実施例を示し、ラダー5aは基
端部側部材51aと先端部側部材52aとが互いに平行になる
ように構成されている点のみが上記構成のものと異なっ
ている。この構成では、先端部側部材52aを船尾板２に
沿わせて収納した状態から取付け軸４回りに回転させて
張り出し状態にした際には、先端部側部材52aがほぼ垂
直になって水中に没入することになる。FIG. 6 shows another embodiment of the present invention. The ladder 5a is different from the above-described ladder 5a only in that the base end side member 51a and the front end side member 52a are configured to be parallel to each other. ing. With this configuration, when the distal end side member 52a is rotated around the mounting shaft 4 from the stored state along the stern plate 2 to the overhanging state, the distal end side member 52a is almost vertically You will be immersed.
上記第１図〜第５図の構成において、艇体１の航走状
態ではラダー５は第１図実線に示すように収納（上昇）
状態にしておく。この状態ではステップ３上には突出物
は何も存在しないために人がステップ３上を移動するの
に便利である。船体１を停止させて人が水中に入る際に
は、ラダー５を取付け軸４回りに回転させる。これによ
って連結部材54がステップ３の上面に載置されることに
より回転が止められ、第１図仮想線に示すように先端部
側部材52の下端部が水面90下に没入する。この状態で、
水中の人100が踏板53に足を掛けてラダー５を上ること
ができ、この際人100はステップ３の上方に突出したラ
ダー５の湾曲部50を握って体を引上げることができ、し
たがってラダー５を上るのが容易である。またステップ
３から人100が水中に下る際にも、人100はラダー５の湾
曲部50を手摺として利用することができるので、ラダー
５を利用しやすいという利点がある。1 to 5, the rudder 5 is stored (raised) as shown by the solid line in FIG. 1 when the hull 1 is in the running state.
Keep it in a state. In this state, since there is no protrusion on step 3, it is convenient for a person to move on step 3. When the hull 1 is stopped and a person enters the water, the rudder 5 is rotated around the mounting shaft 4. As a result, the rotation of the connecting member 54 is stopped by being placed on the upper surface of the step 3, and the lower end of the distal end side member 52 is immersed below the water surface 90 as shown by the imaginary line in FIG. In this state,
The underwater person 100 can climb the ladder 5 by stepping on the tread plate 53, and the person 100 can grasp the curved portion 50 of the ladder 5 protruding above the step 3 and pull up the body. It is easy to climb the ladder 5. Also, when the person 100 goes down into the water from step 3, the person 100 can use the curved portion 50 of the ladder 5 as a handrail, so that there is an advantage that the ladder 5 can be easily used.
またこの構成では先端部側部材52が後方に傾斜して配
置されるので、ラダー５の上り下りがしやすいという利
点もある。さらにラダー５を張り出し状態から収納する
には、湾曲部50を掴んでラダー５を取付け軸４回りに第
１図の時計方向に回転させればよく、この際にもステッ
プ３上にラダーの湾曲部50が突出しているために操作が
容易である。Further, in this configuration, since the distal end side member 52 is disposed inclined rearward, there is an advantage that the rudder 5 can easily go up and down. Further, in order to store the ladder 5 from the overhanging state, it is sufficient to grasp the bending portion 50 and rotate the ladder 5 around the mounting shaft 4 in the clockwise direction in FIG. The operation is easy because the part 50 is projected.
なお、第６図の構成のものも、その作用効果は上記の
ものとほぼ同様である。The operation and effect of the configuration shown in FIG. 6 are substantially the same as those described above.
以上説明したように、この発明によれば、ラダーを取
付け軸回りに回転させて張出した状態では湾曲部がステ
ップ上に突出して人が上り下りする際の手摺りを形成す
るので、人がステップ上を移動する際、および水上の人
がこのラダーを利用して船上に上りあるいは船上から下
る際には非常に便利である。As described above, according to the present invention, when the ladder is rotated around the mounting axis and extended, the curved portion projects on the step and forms a handrail when a person goes up and down. It is very convenient when traveling above and when people on the water use this ladder to climb up or down the boat.
また、ステップには溝が形成され、ラダーの収納時に
はラダーの湾曲部がこの溝に嵌入されるように構成され
ているので、ラダーの収納状態においてラダーがステッ
プ上に大きく突出することを防止して、人がステップ上
を移動する際の邪魔にならないようにすることができ
る。Also, a groove is formed in the step, and the curved portion of the ladder is configured to be fitted into this groove when the ladder is stored, so that the ladder is prevented from protruding greatly on the step in the stored state of the ladder. Thus, it is possible to prevent a person from moving on the steps.
第１図はこの発明の実施例を示すラダー収納状態の縦断
面図、第２図はそのラダー張り出し状態の平面図、第３
図は第２図のIII−III線断面図、第４図は第２図の斜視
図、第５図はラダー取付け部材の斜視図、第６図はこの
発明の別の実施例を示す第１図相当図、第７図は従来例
を示すラダー張り出し状態の斜視図、第８図はその側面
説明図である。 １……船体、２……船尾板、３……ステップ、４……取
付け軸、5,5a……ラダー、50……湾曲部、51……基端部
側部材、52……先端部側部材、54……連結部材。FIG. 1 is a longitudinal sectional view of a ladder housed state showing an embodiment of the present invention, FIG. 2 is a plan view of the ladder extended state, FIG.
FIG. 4 is a sectional view taken along line III-III of FIG. 2, FIG. 4 is a perspective view of FIG. 2, FIG. 5 is a perspective view of a ladder mounting member, and FIG. FIG. 7 is a perspective view showing a conventional example in a ladder overhang state, and FIG. 8 is an explanatory side view thereof. DESCRIPTION OF SYMBOLS 1 ... Hull, 2 ... Stern board, 3 ... Step, 4 ... Mounting shaft, 5, 5a ... Ladder, 50 ... Bending part, 51 ... Base end side member, 52 ... Front end side Member, 54 ... Connecting member.
Claims (1)
れ、このステップには船幅方向で水平な取付け軸が設け
られ、この取付け軸に基端部が回転可能に取付けられた
ラダーが収納状態と張り出し状態との間で位置変更可能
に保持され、このラダーは基端部側部材と先端部側部材
とを有するほぼＵ字形に構成され、上記基端部側部材に
は、張り出し状態において上記取付け軸から上方に向か
って湾曲するように形成された湾曲部が設けられ、上記
先端部側部材には踏板が設けられ、ラダーの張り出し状
態では先端部側部材がステップの後側下方に突出し、収
納状態では先端部側部材が上記ステップの上方に位置す
るように構成され、上記ステップには溝が形成され、ラ
ダー収納時にはラダーの湾曲部がこの溝に嵌入されるよ
うに構成されていることを特徴とする小型船舶のラダー
装置。1. A step is provided on the rear side of the stern plate so as to protrude, and a horizontal mounting shaft is provided in the boat width direction, and a rudder having a base end rotatably mounted on the mounting shaft. The ladder is held so as to be changeable in position between the stored state and the overhanging state, and this ladder is formed in a substantially U-shape having a proximal end side member and a distal end side member. In the above, a curved portion formed to be curved upward from the mounting shaft is provided, a tread plate is provided on the distal end side member, and the distal end side member is located below the rear side of the step when the ladder is overhanging. In the retracted state, the distal end side member is configured to be located above the step, a groove is formed in the step, and a curved portion of the ladder is configured to fit into the groove when the ladder is stored. Ladder system for a small watercraft, characterized in that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2130686A JP2952960B2 (en) | 1990-05-21 | 1990-05-21 | Ladder device for small boats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2130686A JP2952960B2 (en) | 1990-05-21 | 1990-05-21 | Ladder device for small boats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0427690A JPH0427690A (en) | 1992-01-30 |
| JP2952960B2 true JP2952960B2 (en) | 1999-09-27 |
Family
ID=15040197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2130686A Expired - Fee Related JP2952960B2 (en) | 1990-05-21 | 1990-05-21 | Ladder device for small boats |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2952960B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6927826B2 (en) | 1997-03-26 | 2005-08-09 | Semiconductor Energy Labaratory Co., Ltd. | Display device |
| JPH11307782A (en) | 1998-04-24 | 1999-11-05 | Semiconductor Energy Lab Co Ltd | Semiconductor device and its manufacture |
| US8286574B2 (en) * | 2007-02-12 | 2012-10-16 | Mueller Peter A | Lowerable platform with float for a watercraft |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462485A (en) | 1983-01-17 | 1984-07-31 | Step-On Inc. | Ladders for transoms of boats |
| US4541507A (en) | 1983-10-14 | 1985-09-17 | Silvano Gibellato | Universal folding ladder for boats |
| US4722419A (en) | 1986-07-07 | 1988-02-02 | Moeller Manufacturing Co., Inc. | Swim platform |
-
1990
- 1990-05-21 JP JP2130686A patent/JP2952960B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4462485A (en) | 1983-01-17 | 1984-07-31 | Step-On Inc. | Ladders for transoms of boats |
| US4541507A (en) | 1983-10-14 | 1985-09-17 | Silvano Gibellato | Universal folding ladder for boats |
| US4722419A (en) | 1986-07-07 | 1988-02-02 | Moeller Manufacturing Co., Inc. | Swim platform |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0427690A (en) | 1992-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |