JP2816537B2 - Ladder cross rail - Google Patents
Ladder cross railInfo
- Publication number
- JP2816537B2 JP2816537B2 JP7067438A JP6743895A JP2816537B2 JP 2816537 B2 JP2816537 B2 JP 2816537B2 JP 7067438 A JP7067438 A JP 7067438A JP 6743895 A JP6743895 A JP 6743895A JP 2816537 B2 JP2816537 B2 JP 2816537B2
- Authority
- JP
- Japan
- Prior art keywords
- ladder
- right direction
- crosspiece
- extruded
- length
- 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 - Lifetime
Links
Landscapes
- Ladders (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】この発明は、たとえば建築工事現
場の足場に用いられる梯子において、互いに平行な１対
の側木間にその長さ方向に間隔をおいて複数配されかつ
左右両端が側木に固定される梯子用横桟に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder used as a scaffold at a construction site, for example. The present invention relates to a crosspiece for a ladder fixed to a tree.
【０００２】この明細書において、各図面の右側を前、
これと反対側を後というものとする。また、図２の下側
を右、これと反対側を左というものとする。さらに、こ
の明細書において、「アルミニウム」という語には、純
アルミニウムの他にアルミニウム合金を含むものとす
る。[0002] In this specification, the right side of each drawing
The opposite side is referred to as the back. In addition, the lower side of FIG. 2 is referred to as right, and the opposite side is referred to as left. Further, in this specification, the term “aluminum” includes an aluminum alloy in addition to pure aluminum.
【０００３】[0003]
【従来の技術】従来、この種梯子用横桟としては、下面
に左右方向に伸びる複数の補強リブが一体に形成され、
上面に左右方向に伸びる複数の滑り止め用凸条が前後方
向に間隔をおいて一体に形成されたアルミニウム押出形
材製のものが用いられていた。2. Description of the Related Art Conventionally, as a crosspiece for a ladder of this type, a plurality of reinforcing ribs extending in the left-right direction are integrally formed on a lower surface,
A product made of an extruded aluminum material having a plurality of non-slip ridges extending in the left-right direction integrally formed at an upper surface thereof with an interval in the front-rear direction has been used.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
横桟では強度が不足するために、その左右両端に前後方
向に伸びる横断面コ字状のアルミニウム押出形材製補強
用端部材を、溶接、リベット止め、ねじ止め等により固
定する必要があり、そのための工数が増えて梯子の製造
作業が面倒になるという問題があった。However, since the strength of the conventional cross beam is insufficient, a reinforcing end member made of an extruded aluminum material having a U-shaped cross section extending in the front-rear direction at both left and right ends thereof is welded. It is necessary to fix it by riveting, screwing, or the like, which increases the number of man-hours and causes a problem in that the ladder manufacturing operation becomes complicated.
【０００５】この発明の目的は、上記問題を解決した梯
子用横桟を提供することにある。[0005] It is an object of the present invention to provide a ladder crosspiece which solves the above problems.
【０００６】[0006]
【課題を解決するための手段】この発明による梯子用横
桟は、互いに平行な１対の側木間にその長さ方向に間隔
をおいて複数配されかつ左右両端が側木に固定される梯
子用横桟であって、左右方向に伸びる複数の横断面略三
角形状中空部を有する金属押出形材が前後方向に複数並
べられかつ隣り合うものどうしが互いに結合されること
により形成されているものである。Means for Solving the Problems] rungs for ladder children according to the invention is fixed in a plurality arranged and having both left and right ends in the side tree at intervals along its length between the side tree parallel pair mutually A crosspiece for a ladder, which is formed by arranging a plurality of extruded metal members having a plurality of hollow sections having a substantially triangular cross section extending in the left-right direction in the front-rear direction and joining together adjacent ones. Is what it is.
【０００７】上記梯子用横桟において、隣り合う金属押
出形材の互いに結合される面のうちのいずれか一方に左
右方向に伸びる内部拡大溝が形成されるとともに、同他
方に内部拡大溝内に嵌まる凸条が形成されていることが
ある。[0007] The in rung ladders child, with an internal expansion groove extending in the lateral direction to either one of the surfaces to be bonded together of the metal extruded profile adjacent is formed, the internal expansion in the groove in the other May be formed.
【０００８】また、上記梯子用横桟において、側木に固
定される金属押出形材の左右方向の長さが、他の金属押
出形材の左右方向の長さよりも長くなっていることがあ
る。Further, in the rungs for the ladder child, that the horizontal length of the metal extruded profile, which is fixed to the side tree is longer than the length in the horizontal direction of the other metal extruded profile is there.
【０００９】[0009]
【作用】この発明の梯子用横桟によれば、左右方向に伸
びる複数の横断面略三角形状中空部を有する金属押出形
材で形成されているので、強度が従来のものに比べて増
大し、補強用端部材が不要になる。According to the ladder crosspiece of the present invention, since it is formed of a metal extruded member having a plurality of hollow portions having a substantially triangular cross section extending in the left-right direction, the strength is increased as compared with the conventional one. This eliminates the need for a reinforcing end member.
【００１０】この発明の梯子用横桟において、隣り合う
金属押出形材の互いに結合される面のうちのいずれか一
方に左右方向に伸びる内部拡大溝が形成されるととも
に、同他方に内部拡大溝内に嵌まる凸条が形成されてい
ると、隣り合う金属押出形材どうしを左右方向にスライ
ドさせて内部拡大溝内に凸条を嵌合させることができ、
これにより金属押出形材どうしを結合することができ
る。[0010] In the horizontal rail for ladder of the present invention, an internal expanding groove extending in the left-right direction is formed on one of the surfaces of the adjacent extruded metal members that are connected to each other, and the internal expanding groove is formed on the other side. When a ridge that fits inside is formed, adjacent metal extruded profiles can be slid in the left-right direction to fit the ridge into the internal enlarged groove,
As a result, the extruded metal members can be joined together.
【００１１】この発明の梯子用横桟において、側木に固
定される金属押出形材の左右方向の長さが、他の金属押
出形材の左右方向の長さよりも長くなっていると、側木
に固定される金属押出形材の前後両側に位置する金属押
出形材と、側木との間に隙間を形成することができる。
その結果、複数の梯子を前後方向に重ねてたさいのかさ
を低くすることができる。すなわち、たとえば後側の梯
子の横桟の前側部分を、前側の梯子の側木間に嵌め入れ
て前側の梯子の横桟上に重ねることが可能となる。側木
に固定される金属押出形材の左右方向の長さが、他の金
属押出形材の左右方向の長さよりも長くなっていない
と、別個に隙間調整板を側木と横桟における側木への固
定部分との間に介在させる必要がある。In the horizontal rail for ladder of the present invention, if the length in the left-right direction of the extruded metal member fixed to the side bar is longer than the length in the left-right direction of the other extruded metal members, A gap can be formed between the metal extruded profile located on both front and rear sides of the metal extruded profile fixed to the tree and the side tree.
As a result, a plurality of ladders can be stacked in the front-rear direction to reduce the height of the ladders. That is, for example, it is possible to fit the front part of the horizontal rail of the rear ladder between the side trees of the front ladder and to overlap the horizontal rail of the front ladder. If the length in the left-right direction of the extruded metal member fixed to the side member is not longer than the length in the left-right direction of the other extruded metal member, the gap adjusting plate is separately provided on the side member and the side bar. It must be interposed between the fixed part to the tree.
【００１２】[0012]
【実施例】以下、この発明の実施例を、図面を参照して
説明する。 Embodiments of the present invention will be described below with reference to the drawings .
【００１３】図１はこの発明による横桟を示し、図２は
図１の横桟を用いた足場用梯子の要部の構成を示す。ま
た、図３は複数の梯子を重ね合わせた状態を示す。 [0013] Figure 1 shows the rungs that by the present invention, FIG 2 shows a configuration of a main portion of the scaffold ladders with rungs of <br/> Figure 1. FIG. 3 shows a state in which a plurality of ladders are overlapped .
【００１４】図１において、梯子用横桟(20)は、前後方
向に並べられかつ互いに結合された複数の中空状アルミ
ニウム押出形材製横桟構成部材(21)(22)(23)で形成され
ている。すなわち、横断面略平行四辺形状の第１横桟構
成部材(21)と、その前後に配された横断面略三角形状の
第２および第３横桟構成部材(22)(23)とよりなる。第１
横桟構成部材(21)の左右方向の長さは、第２および第３
横桟構成部材(22)(23)の左右方向の長さよりも若干長く
なっている。第１横桟構成部材(21)には、前後方向の中
央部に左右方向に伸びる１つの略平行四辺形状中空部(2
4)が形成されているとともに、この中空部(24)の前後両
側にそれぞれ１つの横断面略三角形状中空部(25)(26)が
形成されている。略平行四辺形状中空部(24)とその前後
両側の略三角形状中空部(25)(26)との間の隔壁(27)(28)
に、それぞれ左右方向に伸びる固定ねじねじ込み孔(12)
が形成されている。第２および第３横桟構成部材(22)(2
3)には、それぞれ前後方向に並んで左右方向に伸びる複
数の横断面略三角形状中空部(29)(30)(31)(32)が形成さ
れている。また、第１〜第３横桟構成部材(21)(22)(23)
の上面には、それぞれ左右方向に伸びる複数の滑り止め
用凸条(2) が前後方向に間隔をおいて一体に形成されて
いる。In FIG . 1, the ladder crosspiece 20 is formed by a plurality of hollow aluminum extruded crosspiece members 21, 22, and 23 which are arranged in the front-rear direction and are connected to each other. Have been. That is, the first horizontal rail component (21) having a substantially parallelogram cross-sectional shape, and the second and third horizontal rail component members (22) and (23) having a substantially triangular cross-section disposed before and after it. . First
The length in the left-right direction of the horizontal beam forming member (21) is the second and third lengths.
It is slightly longer than the length in the left-right direction of the horizontal beam component members (22), (23). The first horizontal beam member (21) has one substantially parallelogram-shaped hollow portion (2
4) and one hollow section (25) (26) having a substantially triangular cross section is formed on each of the front and rear sides of the hollow section (24). Partition walls (27) (28) between the substantially parallelogram-shaped hollow portion (24) and the substantially triangular hollow portions (25) (26) on both front and rear sides thereof
Screw holes (12)
Are formed. The second and third horizontal beam members (22) (2
3), a plurality of hollow portions (29), (30), (31), (32) each having a substantially triangular cross section extending in the left-right direction while being arranged in the front-rear direction. In addition, the first to third horizontal beam constituent members (21), (22), (23)
A plurality of anti-slip ridges (2) extending in the left-right direction are integrally formed on the upper surface of the upper surface at intervals in the front-rear direction.
【００１５】第２横桟構成部材(22)の後面および第３横
桟構成部材(23)の前面に、それぞれ左右方向に伸びる内
部拡大溝(33)(34)が形成されている。第１横桟構成部材
(21)の前後両面に、それぞれ内部拡大溝(33)(34)内に嵌
まる左右方向に伸びる凸条(35)(36)が一体に形成されて
いる。そして、第１横桟構成部材(21)と第２および第３
横桟構成部材(22)(23)とを左右方向にスライドさせて内
部拡大溝(33)(34)内に凸条(35)(36)を嵌合させることに
より、これらの横桟構成部材(21)(22)(23)どうしが結合
されている。このとき、第１横桟構成部材(21)の左右両
端部は、第２および第３横桟構成部材(22)(23)の左右両
端部よりも突出している。Internal enlarged grooves (33) and (34) extending in the left-right direction are respectively formed on the rear surface of the second horizontal rail component (22) and the front surface of the third horizontal rail component (23). First horizontal beam component
On both front and rear surfaces of (21), ridges (35) and (36) extending in the left-right direction are formed integrally with the inside enlarged grooves (33) and (34), respectively. Then, the first cross beam member (21) and the second and third
By sliding the horizontal beam forming members (22) and (23) in the left-right direction and fitting the ridges (35) and (36) into the internal enlarged grooves (33) and (34), these horizontal beam forming members (21) (22) (23) are connected. At this time, the left and right ends of the first horizontal rail component (21) protrude beyond the left and right ends of the second and third horizontal rail component (22) and (23).
【００１６】図２に示すように、足場用梯子(15)は、互
いに平行な左右１対のアルミニウム押出形材製側木(16)
間に、その長さ方向に間隔をおいて複数の横桟(20)が配
され、横桟(20)の左右両端が側木(16)に固定されたもの
である。側木(16)は横断面コ字状で、その開口を左右方
向外側に向けて配されている。 As shown in FIG . 2, the scaffold ladders (15) are
A pair of left and right aluminum extruded profiled side bars (16)
In between, a plurality of crosspieces (20) are arranged at intervals in the length direction.
With the left and right ends of the crosspiece (20) fixed to side beams (16)
It is. The side wood (16) has a U-shaped cross section, and its opening is
It is arranged toward the outside.
【００１７】横桟(20)の第１横桟構成部材(21)の左右両
端部が側木(16)のウェブ部(16a) に当接させられ、この
状態でウェブ部(16a) を外側から貫通した固定ねじ(18)
を第１横桟構成部材(21)の固定ねじねじ込み孔(12)にね
じ込むことにより側木(16)に固定されている。平面から
見て、横桟(20)の第２および第３横桟構成部材(22)(23)
の左右両端と側木(16)との間には、第１横桟構成部材(2
1)が第２および第３横桟構成部材(22)(23)から突出した
分の隙間(19)が存在している。The left and right ends of the first horizontal beam member (21) of the horizontal beam (20) are brought into contact with the web portion (16a) of the side beam (16), and in this state, the web portion (16a) is moved outward. Fixing screw penetrated from (18)
Is fixed to the side member (16) by screwing it into the fixing screw screw hole (12) of the first horizontal rail component (21). When viewed from a plane, the second and third horizontal beam components (22) and (23) of the horizontal beam (20)
Between the left and right ends and the side tree (16), the first cross beam member (2
There is a gap (19) corresponding to 1) protruding from the second and third horizontal beam forming members (22), (23).
【００１８】図３に示すように、複数の梯子(15)を前後
方向に重ねるさいには、後側の梯子(15)の横桟(20)の前
側部分を、前側の梯子(15)の側木(16)間に嵌め入れて前
側の梯子の横桟(20)上に重ねるように行われる。その結
果、複数の梯子(15)を前後方向に重ねてたさいのかさが
低くなる。 As shown in FIG . 3, a plurality of ladders (15) are
When stacking in the direction, in front of the side rail (20) of the rear ladder (15)
Insert the side part between the side bars (16) of the front ladder (15)
It is performed so as to overlap on the side rail (20) of the side ladder. The result
As a result, the ladder (15)
Lower.
【００１９】[0019]
【発明の効果】この発明の梯子用横桟によれば、上述の
ように、強度が従来のものに比べて増大し、補強用端部
材が不要になるので、補強用端部材を横桟に固定する手
間が省け、梯子全体の製造作業が簡単になる。Effects of the Invention According to the rungs for ladder children of this invention, as described above, the strength is increased as compared with the conventional, since the reinforcing end members becomes unnecessary, the reinforcing end members rungs The work of fixing the entire ladder is simplified, and the work of manufacturing the entire ladder is simplified.
【００２０】また、この発明の梯子用横桟において、隣
り合う金属押出形材の互いに結合される面のうちのいず
れか一方に左右方向に伸びる内部拡大溝が形成されると
ともに、同他方に内部拡大溝内に嵌まる凸条が形成され
ていると、上述のようにして金属押出形材どうしを結合
することができるので、金属押出形材どうしの結合作業
が簡単になる。Further, in the horizontal rail for ladder of the present invention, an internal enlarged groove extending in the left-right direction is formed on one of the surfaces of the adjacent extruded metal members that are connected to each other, and the internal enlarged groove is formed on the other side. If the protruding ridge that fits in the enlarged groove is formed, the extruded metal members can be joined as described above, so that the joining operation of the extruded metal members is simplified.
【００２１】さらに、この発明の梯子用横桟において、
側木に固定される金属押出形材の左右方向の長さが、他
の金属押出形材の左右方向の長さよりも長くなっている
と、上述のように、複数の梯子を前後方向に重ねてたさ
いのかさを低くすることができる。しかも、別個に隙間
調整板を側木と横桟における側木への固定部分との間に
介在させる必要がなくなり、梯子全体の部品点数が少な
くなる。Further, in the horizontal rail for ladder of the present invention ,
If the length in the left-right direction of the extruded metal member fixed to the side member is longer than the length in the left-right direction of the other extruded metal members, as described above, a plurality of ladders are stacked in the front-rear direction. It can reduce the amount of money. In addition, there is no need to separately provide a gap adjusting plate between the side member and the portion of the side beam fixed to the side member, and the number of parts of the entire ladder is reduced.
【図１】この発明による梯子用横桟を示す断面斜視図で
ある。1 is a cross-sectional perspective view showing the rungs for by that ladder children to the present invention.
【図２】この発明による梯子用横桟を用いた梯子の部分
拡大水平断面図である。2 is a partially enlarged horizontal cross-sectional view of a ladder with rungs for by that ladder children to the present invention.
【図３】 複数の梯子を重ね合わせた状態を示す側面図で
ある。 FIG. 3 is a side view showing a state in which a plurality of ladders are superimposed.
【符号の説明】(20) 梯子用横桟 (21) 第１横桟構成部材（金属押出形材） (22) 第２横桟構成部材（金属押出形材） (23) 第３横桟構成部材（金属押出形材） (25) 横断面略三角形状中空部 (26) 横断面略三角形状中空部 (29) 横断面略三角形状中空部 (30) 横断面略三角形状中空部 (31) 横断面略三角形状中空部 (32) 横断面略三角形状中空部[Description of Signs] (20) Ladder horizontal rail (21) First horizontal rail structural member (extruded metal) (22) Second horizontal rail structural member (extruded metal) (23) Third horizontal rail Member (extruded metal) (25) Hollow section with approximately triangular cross section (26) Hollow section with approximately triangular cross section (29) Hollow section with approximately triangular cross section (30) Hollow section with approximately triangular cross section (31) Hollow section with approximately triangular cross section (32) Hollow section with approximately triangular cross section
Claims (3)
向に間隔をおいて複数配されかつ左右両端が側木に固定
される梯子用横桟であって、左右方向に伸びる複数の横
断面略三角形状中空部を有する金属押出形材が前後方向
に複数並べられかつ隣り合うものどうしが互いに結合さ
れることにより形成されている梯子用横桟。 1. A ladder crosspiece which is disposed between a pair of parallel sidebars at intervals in the length direction thereof and has left and right ends fixed to the sidebars, the plurality of crossbars extending in the left-right direction. A crosspiece for a ladder formed by arranging a plurality of extruded metal members having hollow portions having a substantially triangular cross section in the front-rear direction and connecting adjacent ones to each other.
る面のうちのいずれか一方に左右方向に伸びる内部拡大
溝が形成されるとともに、同他方に内部拡大溝内に嵌ま
る凸条が形成されている請求項１記載の梯子用横桟。 2. An inner expanding groove extending in the left-right direction is formed on one of the surfaces of adjacent metal extruded sections which are connected to each other, and a ridge fitted in the inner expanding groove is formed on the other side. The crosspiece for a ladder according to claim 1, wherein the crosspiece is formed.
向の長さが、他の金属押出形材の左右方向の長さよりも
長くなっている請求項１記載の梯子用横桟。 3. The crosspiece for a ladder according to claim 1 , wherein the length of the extruded metal member fixed to the side bar in the left-right direction is longer than the length of the other extruded metal members in the left-right direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067438A JP2816537B2 (en) | 1995-03-27 | 1995-03-27 | Ladder cross rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067438A JP2816537B2 (en) | 1995-03-27 | 1995-03-27 | Ladder cross rail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08260860A JPH08260860A (en) | 1996-10-08 |
| JP2816537B2 true JP2816537B2 (en) | 1998-10-27 |
Family
ID=13344939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7067438A Expired - Lifetime JP2816537B2 (en) | 1995-03-27 | 1995-03-27 | Ladder cross rail |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816537B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3490690B2 (en) | 2001-02-20 | 2004-01-26 | 松下電工株式会社 | Ladder |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020053779A (en) * | 2002-03-25 | 2002-07-05 | 백수곤 | Composite Ladder |
| JP2009257040A (en) * | 2008-04-21 | 2009-11-05 | Bridgestone Corp | Ladder and method for installing it |
| CH718363A1 (en) * | 2021-02-19 | 2022-08-31 | Procon Btw Gmbh | Plastic toe board and connecting piece. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2604188Y2 (en) * | 1992-08-04 | 2000-04-17 | アラコ株式会社 | Vehicle carrier device |
-
1995
- 1995-03-27 JP JP7067438A patent/JP2816537B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3490690B2 (en) | 2001-02-20 | 2004-01-26 | 松下電工株式会社 | Ladder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08260860A (en) | 1996-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980623 |