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WO2009003393A1 - A ladder and a ladder tread - Google Patents

A ladder and a ladder tread Download PDF

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Publication number
WO2009003393A1
WO2009003393A1 PCT/CN2008/071431 CN2008071431W WO2009003393A1 WO 2009003393 A1 WO2009003393 A1 WO 2009003393A1 CN 2008071431 W CN2008071431 W CN 2008071431W WO 2009003393 A1 WO2009003393 A1 WO 2009003393A1
Authority
WO
WIPO (PCT)
Prior art keywords
ladder
pedal
fixed
leg tube
support rod
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.)
Ceased
Application number
PCT/CN2008/071431
Other languages
English (en)
French (fr)
Inventor
Luhao Leng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA2689411A priority Critical patent/CA2689411C/en
Priority to US12/602,659 priority patent/US9157275B2/en
Publication of WO2009003393A1 publication Critical patent/WO2009003393A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/082—Connections between rungs or treads and longitudinal members
    • E06C7/083—Bracket type connection
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/082—Connections between rungs or treads and longitudinal members
    • E06C7/084—Rungs comprising projecting tabs or flanges

Definitions

  • the invention relates to a ladder and a ladder pedal thereof.
  • the ladder pedal of the existing ladder must satisfy both the condition that the support strength is high enough and the pedal surface area is sufficiently large.
  • there are currently two types of ladder pedals one is an aluminum alloy step ladder, and the other is an injection molded plastic ladder pedal.
  • the aluminum alloy ladder pedal is greatly improved in manufacturing cost due to the material used in the aluminum alloy, such as injection molding plastic ladder pedals due to inconvenient connection of plastic parts. Therefore, the connection between the injection molded plastic ladder pedal and the leg tube is extremely inconvenient.
  • the present invention provides a ladder and a ladder pedal thereof that overcome the deficiencies of the prior art that are expensive to manufacture and inconvenient to connect.
  • a ladder pedal the ladder pedal includes a plastic pedal and a metal support rod, and the metal support rod supports the plastic pedal.
  • the bottom of the plastic pedal is provided with a fixed through slot, and the metal support rod is fixed in the fixed through slot.
  • the plastic pedal end extends outwardly into a decorative portion.
  • a ladder comprising a leg tube and a ladder pedal
  • the ladder pedal is installed between the leg tubes
  • the ladder pedal comprises a plastic pedal and a metal support rod
  • the metal support rod supports the plastic pedal.
  • the bottom of the plastic pedal is provided with a fixed through slot, and the metal support rod is fixed in the fixed through slot.
  • the ladder pedal secures the leg tube by a fixed connection between the metal support rod and the leg tube.
  • the leg tube is fixed with a reinforcing piece, and the metal supporting rod is fixed to the reinforcing piece.
  • the plastic pedal end extends outwardly into a decorative portion that covers the reinforcing sheet.
  • the leg tube is provided with two axial grooves, and the two sides of the reinforcing iron piece are arranged as a card edge, and the reinforcing iron piece partially wraps the leg tube and the two card edges are respectively engaged with the two sides. Groove.
  • the reinforcing sheet is a reinforcing iron piece, and the metal supporting rod is welded to the reinforcing iron piece.
  • the metal support rod supports and connects the plastic pedal, so the ladder pedal not only has two conditions of high enough support strength and a large pedal surface area, but also has the following advantages: Lowering the manufacturing cost; Second, connecting the ladder pedal and the leg tube through the fixed relationship between the metal support rod and the leg tube, the connection is convenient and the strength is high.
  • the metal support rod is fixed to the reinforcing piece. Since the metal support rod is not directly fixed to the leg tube but is fixed to the leg tube by the reinforcing piece, the following advantages are obtained: First, the reinforcing piece can be uniformly dispersed and applied to the metal support rod. The force acts to protect the leg tube and greatly enhances the strength of the leg tube.
  • the pedal and the leg tube are better integrated, which is more beautiful than the general design shape. Strengthening the partial wrapping of the iron piece and fixing it to the leg tube can greatly improve the strength of the leg tube.
  • the decorative part covers the reinforced iron piece, and the reinforcing iron piece is not seen in appearance, and the appearance is more tidy.
  • FIG. 1 is a perspective exploded view of a ladder pedal according to a preferred embodiment of the present invention.
  • FIG. 2 is a perspective view of a ladder raft according to a preferred embodiment of the present invention.
  • FIG 3 is a perspective exploded view of a ladder raft according to a preferred embodiment of the present invention.
  • FIG. 4 is a front elevational view of a ladder raft according to a preferred embodiment of the present invention.
  • Figure 5 is a cross-sectional view taken along line A of Figure 4.
  • Figure 6 is a cross-sectional view of B-B of Figure 5.
  • Fig. 7 is an enlarged view of a portion A of Fig. 4.
  • front leg tube 10 rear leg tube 20, armrest tube 30, hinge sleeve 40, ladder pedal 50, groove 11, reinforcing iron piece 12, card edge 121, metal support rod 51, plastic pedal 52, fixed pass The groove 53, the decorative portion 54.
  • Embodiment 1 is a ladder pedal according to a preferred embodiment of the present invention.
  • the ladder pedal 50 includes a plastic pedal 52 and a metal support rod 51.
  • the bottom of the plastic pedal 52 is provided with a fixed through slot 53. Both ends of the plastic pedal 52 extend outwardly, upwardly and downwardly to form a decoration perpendicular to the body of the plastic pedal 52. Part 54.
  • the metal support rod 51 is fixed in the fixed through groove 53 of the plastic pedal 52.
  • the length of the metal support rod 51 is not less than the length of the fixed through groove 53 so that the end surface of the metal support rod 51 is not retracted into the fixed through groove 53.
  • the middle metal support rod 51 is a square tube, and the cross-sectional shape of the fixed through groove 53 is matched with the square groove to ensure that the plastic pedal 52 and the metal support rod 51 do not rotate relative to each other.
  • Embodiment 2 is a ladder of a preferred embodiment of the present invention. Please refer to FIG. 2, FIG. 3 and FIG. 4, which are respectively a perspective view, a perspective exploded view, and a front view.
  • a ladder includes two front leg tubes 10, two rear leg tubes 20, an armrest tube 30, a hinge sleeve 40, and a ladder pedal 50.
  • the materials of the front leg tube 10, the rear leg tube 20 and the armrest tube 30 are aluminum alloy; the stepped pedal 50 is fixed between the two front leg tubes 10; the end of the armrest tube 30 and the top end of the front leg tube 10 are passed through the hinge sleeve 40 forms a fixed connection relationship, and the top end of the rear leg tube 20 is rotatably connected to the hinge sleeve 40, so that the rear leg tube 20 and the front leg tube 10 form a hinge connection relationship.
  • the front leg tube 10 is an elliptical tube, and two grooves 11 are arranged on the long axis of the elliptical tube; and a reinforcing iron piece 12 is arranged to strengthen the two iron pieces 12
  • the side is set to the card edge 121.
  • the reinforcing iron piece 12 is fixed to the front leg tube 10 by two rivets, and the reinforcing iron piece 12 is wrapped around the inner side portion of the front leg tube 10, and the two card edges 121 are respectively fastened by the two grooves 11.
  • the ladder pedal 50 includes a plastic pedal 52 and a metal support rod 51.
  • the bottom of the plastic pedal 52 is provided with a fixed through groove 53, and the end of the plastic pedal 52 extends outwardly, upwardly and downwardly to form a decorative portion 54.
  • the metal support rod 51 is fixed in the fixed through groove 53.
  • the length of the metal support rod 51 is not less than the length of the fixed through groove 53 so that the end surface of the metal support rod 51 is not retracted into the fixed through groove 53; the metal support rod 51
  • the cross-sectional shape of the fixed through groove 53 is adapted to the square groove to ensure that the plastic pedal 52 and the metal support rod 51 do not rotate relative to each other.
  • the end of the metal support rod 51 is welded to the reinforcing iron piece 12, and the inner shape of the decorative portion 54 at the end of the plastic pedal 52 is adapted to the outer shape of the reinforcing iron piece 12, so that the decorative portion 54 covers the reinforcement.
  • the iron piece 12 is stuck on the leg tube 10, and plays a role of fixing the strong iron piece 12 and the plastic pedal 52, thereby increasing the overall aesthetics and safety.
  • the utility model relates to a ladder and a ladder pedal thereof.
  • the ladder pedal is composed of a metal rod member and a plastic pedal, and has reasonable design, safe use, convenient processing and good industrial applicability.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Description

一种梯子及其梯蹬踏板
技术领域
本发明涉及一种梯子及其梯蹬踏板。
背景技术
现有梯子的梯蹬踏板必须同时满足支撑强度足够高以及踏板面面积足够大 两个条件。 为了满足该两条件， 目前市面有两种梯蹬踏板， 一种为铝合金梯蹬踏 板， 另一种为注塑塑料梯蹬踏板。不管是铝合金梯蹬踏板还是注塑塑料梯蹬踏板 都存在不足之处，如铝合金梯蹬踏板由于材料采用的是铝合金因此大大提高了制 造成本，如注塑塑料梯蹬踏板由于塑料件不便连接因此注塑塑料梯蹬踏板与腿管 之间的连接极不方便。
发明内容
本发明提供一种梯子及其梯蹬踏板， 其克服了背景技术所存在的制造成本 高、 连接不便的不足。
本发明解决其技术问题所采用的技术方案是： 一种梯蹬踏板， 该梯蹬踏板 包括一塑料踏板以及一金属支撑杆， 该金属支撑杆支撑连接该塑料踏板。
依照本发明一较佳实施例， 该塑料踏板底部设有固定通槽， 该金属支撑杆 固接于该固定通槽内。
依照本发明一较佳实施例， 该塑料踏板端部向外延伸成装饰部。
本发明解决其技术问题所采用的技术方案是： 一种梯子， 其包括腿管以及 梯蹬踏板，梯蹬踏板安装于两腿管之间， 该梯蹬踏板包括一塑料踏板以及一金属 支撑杆， 该金属支撑杆支撑连接该塑料踏板。
依照本发明一较佳实施例， 该塑料踏板底部设有固定通槽， 该金属支撑杆 固接于该固定通槽内。
依照本发明一较佳实施例， 该梯蹬踏板通过金属支撑杆与腿管之间固定连 接关系而固接腿管。
依照本发明一较佳实施例， 该腿管固接有加强片， 该金属支撑杆固接加强 片。
依照本发明一较佳实施例， 该塑料踏板端部向外延伸成装饰部， 该装饰部 遮盖加强片。 依照本发明一较佳实施例， 该腿管上设有两轴线凹槽， 该加强铁片两侧边 设为卡边， 该加强铁片部分包裹固接腿管且两卡边分别卡接两凹槽。
依照本发明一较佳实施例， 该加强片为加强铁片， 该金属支撑杆焊接于加 强铁片。
本发明技术方案的梯蹬踏板中， 金属支撑杆支撑连接该塑料踏板， 因此该 梯蹬踏板不但具有支撑强度足够高以及踏板面面积足够大的两个条件，而且还具 有以下优点： 其一， 降低制造成本； 其二， 通过金属支撑杆与腿管之间的固接关 系， 连接梯蹬踏板和腿管， 连接方便、 强度高。 金属支撑杆固接加强片， 由于金 属支撑杆不是直接固接在腿管而是通过加强片固接在腿管， 因此具有如下的优 点： 其一， 加强片可均匀的分散施加给金属支撑杆的力， 起到保护腿管的作用， 可大大提高腿管的强度； 其二， 踏板和腿管更好的融合在一起， 与一般的设计外 形相比显得更加美观。加强铁片部分包裹、固接于腿管，可大大提高腿管的强度。 装饰部遮盖该加强铁片， 外观上见不到加强铁片， 外观更整洁。
附图说明
下面结合附图和实施例对本发明进一步说明。
图 1绘示本发明一较佳实施例的梯蹬踏板的立体分解示意图。
图 2绘示本发明一较佳实施例的梯蹬的立体示意图。
图 3绘示本发明一较佳实施例的梯蹬的立体分解示意图。
图 4绘示本发明一较佳实施例的梯蹬的主视示意图。
图 5绘示图 4的 A处的剖面图。
图 6绘示图 5的 B-B的剖面图。
图 7绘示图 4的 A处的放大图。
标号说明： 前腿管 10， 后腿管 20， 扶手管 30， 铰链套 40， 梯蹬踏板 50， 凹槽 11， 加强铁片 12， 卡边 121， 金属支撑杆 51， 塑料踏板 52， 固定通槽 53， 装饰部 54。
具体实施方式
实施例 1， 为本发明一较佳实施例的梯蹬踏板， 如附图 1梯蹬踏板 50包括 一塑料踏板 52以及一金属支撑杆 51， 塑料踏板 52底部设有固定通槽 53， 而且 该塑料踏板 52两端部均向外、 向上、 向下延伸成与塑料踏板 52本体垂直的装饰 部 54。 金属支撑杆 51固接于塑料踏板 52的固定通槽 53内， 金属支撑杆 51长 度不小于固定通槽 53长度，使得金属支撑杆 51端面不缩进于该固定通槽 53内； 本实施例中金属支撑杆 51为方形管，固定通槽 53的剖面形状为与其相适配方形 槽， 以保证塑料踏板 52与金属支撑杆 51不会相对转动。
实施 2、 为本发明一较佳实施例的梯蹬， 请参阅图 2、 图 3与图 4， 其分别 绘示其立体示意图、 立体分解示意图、 主视示意图。 一种梯蹬包括两前腿管 10、 两后腿管 20、 一扶手管 30、 一铰链套 40以及一梯蹬踏板 50。 前腿管 10、 后腿 管 20以及扶手管 30的材料为铝合金； 梯蹬踏板 50固接两前腿管 10之间； 扶手 管 30端部和前腿管 10顶端部之间通过铰链套 40之间构成固定连接关系， 后腿 管 20顶端可转动连接于铰链套 40， 使得后腿管 20和前腿管 10之间构成铰链连 接关系。
请参阅图 5、 图 6与图 7， 该前腿管 10为椭圆管， 在椭圆管的长轴上设有 两个凹槽 11 ; 另配设有一加强铁片 12， 加强铁片 12的两侧边设置为卡边 121。 该加强铁片 12通过两铆钉固接于前腿管 10， 并使加强铁片 12包裹于前腿管 10 的内侧部分且两卡边 121分别卡接两凹槽 11固定。
梯蹬踏板 50包括一塑料踏板 52以及一金属支撑杆 51，塑料踏板 52底部设 有固定通槽 53， 而且该塑料踏板 52端部向外、 向上、 向下延伸成装饰部 54。 该 金属支撑杆 51固接于该固定通槽 53内， 该金属支撑杆 51长度不小于固定通槽 53长度， 使得金属支撑杆 51端面不缩进于该固定通槽 53内； 金属支撑杆 51为 方形管， 固定通槽 53的剖面形状与其相适配方形槽， 以保证塑料踏板 52与金属 支撑杆 51不会相对转动。
金属支撑杆 51端部与加强铁片 12之间焊接连接， 塑料踏板 52端部的装饰 部 54的内部形状与加强铁片 12处的外部形状相适配， 使得该装饰部 54包覆该 加强铁片 12卡接在腿管 10夕卜，起到装饰强铁片 12及塑料踏板 52固定作用，增 加了整体的美观性及安全性。
工业实用性
本发明一种梯子及其梯蹬踏板， 梯蹬踏板是由金属杆件及塑料踏板构成， 设计合理、 使用安全、 加工方便， 具有良好的工业实用性。

Claims

权 利 要 求
1.一种梯蹬踏板，其特征是：该梯蹬踏板包括一塑料踏板以及一金属支撑杆， 该金属支撑杆支撑连接该塑料踏板。
2. 根据权利要求 1所述的一种梯蹬踏板， 其特征是： 该塑料踏板底部设有 固定通槽， 该金属支撑杆固接于该固定通槽内。
3. 根据权利要求 1或 2所述的一种梯蹬踏板， 其特征是： 该塑料踏板端部 向外延伸成装饰部。
4. 一种梯子， 其包括腿管以及梯蹬踏板， 梯蹬踏板安装于两腿管之间， 其 特征是： 该梯蹬踏板包括一塑料踏板以及一金属支撑杆， 该金属支撑杆支撑连接 该塑料踏板。
5. 根据权利要求 4所述的一种梯子， 其特征是： 该塑料踏板底部设有固定 通槽， 该金属支撑杆固接于该固定通槽内。
6. 根据权利要求 5所述的一种梯子， 其特征是： 该梯蹬踏板通过金属支撑 杆与腿管之间固定连接关系而固接腿管。
7. 根据权利要求 4或 5或 6所述的一种梯子， 其特征是： 该腿管固接有加 强片， 该金属支撑杆固接加强片。
8. 根据权利要求 7所述的一种梯子， 其特征是： 该塑料踏板端部向外延伸 成装饰部， 该装饰部遮盖加强片。
9. 根据权利要求 7所述的一种梯子， 其特征是： 该腿管上设有两轴线凹槽， 该加强铁片两侧边设为卡边，该加强铁片部分包裹固接腿管且两卡边分别卡接两 凹槽。
10. 根据权利要求 9所述的一种梯子， 其特征是： 该腿管为椭圆管， 在椭 圆管的长轴上设有两轴线凹槽； 加强铁片通过两铆钉固接于前腿管， 并使加强铁 片包裹于前腿管的内侧部分且两卡边分别卡接两凹槽固定。
11. 根据权利要求 10所述的一种梯子， 其特征是： 该塑料踏板两端部向外 延伸成垂直与塑料踏板本体的装饰部，装饰部的内部形状与与加强铁片处的外部 形状相适配， 遮盖加强片卡接在腿管外。
PCT/CN2008/071431 2007-06-29 2008-06-25 A ladder and a ladder tread Ceased WO2009003393A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA2689411A CA2689411C (en) 2007-06-29 2008-06-25 A ladder and its ladder tread
US12/602,659 US9157275B2 (en) 2007-06-29 2008-06-25 Ladder and a ladder tread

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200720007518.3 2007-06-29
CNU2007200075183U CN201056976Y (zh) 2007-06-29 2007-06-29 一种梯子及其梯蹬踏板

Publications (1)

Publication Number Publication Date
WO2009003393A1 true WO2009003393A1 (en) 2009-01-08

Family

ID=39425816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/071431 Ceased WO2009003393A1 (en) 2007-06-29 2008-06-25 A ladder and a ladder tread

Country Status (4)

Country Link
US (1) US9157275B2 (zh)
CN (1) CN201056976Y (zh)
CA (1) CA2689411C (zh)
WO (1) WO2009003393A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201056976Y (zh) * 2007-06-29 2008-05-07 冷鹭浩 一种梯子及其梯蹬踏板
CN101684720B (zh) * 2008-09-27 2012-06-27 冷鹭浩 一种简易铝梯的顶踏板结构
US20160265277A1 (en) * 2015-03-12 2016-09-15 Scott A. Masters Step ladder with rungs having bent front faces for improved leg support
CN206376733U (zh) * 2016-11-28 2017-08-04 厦门新技术集成有限公司 一种折叠式扶手梯子
WO2020015543A1 (zh) * 2018-07-16 2020-01-23 江苏宙际杰智能科技股份有限公司 一种梯子
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US20100170750A1 (en) 2010-07-08
US9157275B2 (en) 2015-10-13

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