JP2019001222A - Getting-on/off step for truck - Google Patents

Getting-on/off step for truck Download PDF

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JP2019001222A
JP2019001222A JP2017115549A JP2017115549A JP2019001222A JP 2019001222 A JP2019001222 A JP 2019001222A JP 2017115549 A JP2017115549 A JP 2017115549A JP 2017115549 A JP2017115549 A JP 2017115549A JP 2019001222 A JP2019001222 A JP 2019001222A
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truck
vertical movable
frame
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JP6685556B2 (en
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健 百瀬
Takeshi Momose
健 百瀬
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KOSHIN SEIKI KK
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Abstract

To provide a truck even with a high loading space, capable of allowing a person to safely get on/off the loading space.SOLUTION: A getting-on/off step Sfor a truck is structured as follows: a plurality of upper and lower footboards A, Aare connected with a frame Fin square frame shape to be foldable through a pair of left and right parallel link mechanisms Pand a pair of left and right hooks 6 inserted into a clearance 53 between a floor board 51 of a truck T and a gate plate 52 in an open state are mounted on an upward horizontal part Fb of the frame F. Respective vertical movable links Lconstituting the respective parallel link mechanisms P, are arranged in parallel to a vertical part Fa of the frame F, and extend above the uppermost-stage footboard A, and a sliding rod H is detachably fitted on an upward extending part La of each of the vertical movable links L.SELECTED DRAWING: Figure 7

Description

本発明は、トラックの荷台に対して安定姿勢で乗降できるトラック用乗降ステップに関するものである。   The present invention relates to a loading / unloading step for a truck that can get on and off in a stable posture with respect to a truck bed.

トラックの荷台に対して人が乗降するためのトラック用乗降ステップの一つとして、特許文献1に開示されているように、「方形枠状のフレームに対して上下複数枚の踏板が左右一対の平行リンク機構を介して折畳み可能に連結され、当該フレームの上方の水平部に、トラックの床板と開状態のあおり板との隙間に嵌入される左右一対のフックが取付けられた構成」のものが知られている。乗降ステップの使用時には、トラックの床板と開状態のあおり板との隙間に左右一対のフックを嵌入し、折畳まれた複数の踏板が水平となるように引き起こし、非使用時には、上記と逆の操作を行って、トラックの荷台から乗降ステップを取り外している。   As one of the steps for getting on and off the truck for getting on and off the truck bed, as disclosed in Patent Document 1, "a plurality of upper and lower treads are paired on the left and right with respect to the rectangular frame-shaped frame." It is connected via a parallel link mechanism so that it can be folded, and a pair of left and right hooks fitted into the gap between the floor of the truck and the open side plate is attached to the horizontal part above the frame '' Are known. When using the boarding / exiting step, a pair of left and right hooks are inserted into the gap between the truck floor and the open side plate, causing the folded footboards to be horizontal, and when not in use, the reverse of the above The operation has been performed to remove the entry / exit step from the truck bed.

そして、従来のトラック用乗降ステップは、恰も、手摺りのない階段を乗降するようなものであるため、乗降中にバランスを崩した場合には、転倒の危険を伴う。地上からのトラックの荷台の高さは、積載重量の大きな大型トラックでは、相当に高くなるので、乗降に伴う危険が大きい。   The conventional boarding / alighting step for a truck is like getting on and off a stairway without a handrail, so if the balance is lost during boarding / alighting, there is a risk of falling. The height of the truck bed from the ground is considerably high for large trucks with a large loading weight, so there is a great risk of getting on and off.

意匠登録第1511224号公報Design Registration No. 1511224

本発明は、荷台の高いトラックにおいても、荷台に対して人が安全に乗降できるようにすることを課題としている。   An object of the present invention is to enable a person to safely get on and off a loading platform even in a truck with a high loading platform.

上記課題を解決するための請求項1の発明は、方形枠状のフレームに対して上下複数枚の踏板が左右一対の平行リンク機構を介して折畳み可能に連結され、当該フレームの上方の水平部に、トラックの床板と開状態のあおり板との隙間に嵌入される左右一対のフックが取付けられたトラック用乗降ステップであって、
前記各平行リンク機構を構成していて、前記フレームの垂直部と平行に配置された各垂直可動リンクは、最上段の踏板よりも上方にそれぞれ延設され、当該各垂直可動リンクの上方延設部に、それぞれ手摺り棒が着脱可能に取付けられる構成であることを特徴としている。
According to a first aspect of the present invention for solving the above-described problem, a plurality of upper and lower treads are connected to a rectangular frame-like frame via a pair of left and right parallel link mechanisms so as to be foldable, and a horizontal portion above the frame. And a loading / unloading step for a truck to which a pair of left and right hooks to be fitted in a gap between the floor plate of the truck and the open side plate is attached,
The vertical movable links that constitute each of the parallel link mechanisms and are arranged in parallel with the vertical portion of the frame extend above the uppermost tread, and extend upward from the vertical movable links. The handrail bar is detachably attached to each part.

請求項1の発明によれば、方形枠状のフレームに対して上下複数枚の踏板を折畳み可能に連結する左右一対の平行リンク機構を構成していて、当該フレームの垂直部と平行な各垂直可動リンクは、最上段の踏板よりも上方にそれぞれ延設されて、上方延設部が形成され、当該各上方延設部に、それぞれ手摺り棒が着脱可能に取付けられているため、トラックの荷台に対して人が乗降する際には、左右一対の手摺り棒を掴んで乗降できる。よって、トラックの荷台に対する人の乗降姿勢が安定するため、乗降途中でバランスを崩して、不意に転倒する危険がなくなる。   According to the first aspect of the present invention, a pair of left and right parallel link mechanisms that foldably connect a plurality of upper and lower treads to a rectangular frame-like frame are configured, and each vertical parallel to the vertical portion of the frame Each of the movable links extends upward from the uppermost tread so as to form an upward extending portion, and a handrail bar is detachably attached to each of the upward extending portions. When a person gets on and off the loading platform, he / she can get on and off by holding a pair of left and right handrail bars. Therefore, since the person's getting on / off posture is stabilized with respect to the truck bed, there is no danger of unexpected falls due to loss of balance during getting on / off.

また、トラックの荷台に対して乗降ステップを取付ける場合には、各踏板が折畳み状態の乗降ステップのフレームの上方の水平部に一体に設けられた一対のフックを、トラックの床板と開状態のあおり板との隙間に嵌入させ、この状態で、左右一対の手摺り棒をトラックの側方に立っている人の側(トラックの荷台から離れる側)に引くと、左右一対の平行リンク機構が作動して、当該平行リンク機構を構成する左右の各垂直可動リンクが荷台から離間することで、当該各垂直可動リンクとフレームの各垂直部とを連結する上下の各連結リンクに連結された折畳み状態の各踏板が水平姿勢となって固定配置される。このように、トラックの荷台に乗降ステップを取付ける場合においても、左右一対の垂直可動リンクに着脱可能に取付けられた各手摺り棒を利用することで、折畳み状態の各踏板を水平配置させる作業が容易となる。   In addition, when installing the loading / unloading step on the truck bed, a pair of hooks that are integrally provided on the horizontal part above the frame of the loading / unloading step in which each step board is folded are connected to the floor of the truck. In this state, the pair of left and right handrail bars are pulled to the side of the person standing on the side of the truck (the side away from the truck bed), and the pair of left and right parallel link mechanisms are activated. The left and right vertical movable links constituting the parallel link mechanism are separated from the cargo bed, so that the folded state is connected to the upper and lower connection links connecting the vertical movable links and the vertical portions of the frame. Each tread is fixedly arranged in a horizontal posture. As described above, even when the boarding / unloading step is attached to the truck bed, by using the handrail rods detachably attached to the pair of left and right vertical movable links, it is possible to horizontally arrange the stepping plates in the folded state. It becomes easy.

請求項2の発明は、請求項1の発明において、前記垂直可動リンクの上方延設部の外側に、パイプ状の前記手摺り棒が外嵌状態で挿入されて、当該手摺り棒は、固定具を介して垂直可動リンクの前記上方延設部に固定される構成であることを特徴としている。   According to a second aspect of the present invention, in the first aspect of the invention, the pipe-shaped handrail bar is inserted in an externally fitted state on the outside of the upwardly extending portion of the vertical movable link, and the handrail bar is fixed It is the structure fixed to the said upward extending part of a perpendicular | vertical movable link through a tool, It is characterized by the above-mentioned.

請求項2の発明によれば、垂直可動リンクの上方延設部の外側に、パイプ状の前記手摺り棒が外嵌状態で挿入される構成であるので、垂直可動リンクの上方延設部に対する手摺り棒の着脱が容易となる。   According to the second aspect of the present invention, the pipe-shaped handrail bar is inserted in an externally fitted state on the outer side of the upward extending portion of the vertical movable link. The handrail stick can be easily attached and detached.

請求項3の発明は、請求項2の発明において、前記垂直可動リンクと、前記平行リンク機構を構成する各段の各連結リンクとは連結ピンを介して連結され、前記垂直可動リンクの上方延設部の上端から外嵌状態で挿入される前記手摺り棒は、最上段の前記連結ピンに当接することで、下動が停止される構成であることを特徴としている。   According to a third aspect of the present invention, in the second aspect of the present invention, the vertical movable link and the connection links of the respective stages constituting the parallel link mechanism are connected via a connection pin, and extend upward from the vertical movable link. The handrail rod inserted in an externally fitted state from the upper end of the installation portion is configured to stop downward movement by contacting the uppermost connection pin.

請求項3の発明によれば、垂直可動リンクの上方延設部の上端からパイプ状の手摺り棒を外嵌状態で挿入するのみで、当該手摺り棒の下端は、最上段の連結リンクと垂直可動リンクとを連結する連結ピンに当接して、垂直可動リンクの上方延設部に対する当該手摺り棒の下動が停止される。即ち、当該連結ピンが、手摺り棒の下動端を規制する規制部材の作用を果すので、専用の規制部材を設ける必要がなくなる。   According to the invention of claim 3, only by inserting a pipe-shaped handrail bar in an externally fitted state from the upper end of the upwardly extending portion of the vertical movable link, the lower end of the handrail bar is connected to the uppermost connecting link. Abutting on a connecting pin that connects the vertical movable link, the downward movement of the handrail bar with respect to the upwardly extending portion of the vertical movable link is stopped. That is, the connecting pin serves as a regulating member that regulates the lower end of the handrail rod, so that it is not necessary to provide a dedicated regulating member.

請求項4の発明は、請求項2又は3の発明において、前記垂直可動リンクの横断面は、外側に開口した断面コの字形であることを特徴としている。   According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the vertical cross section of the vertical movable link is a U-shaped cross section that opens outward.

請求項4の発明によれば、断面コの字状の垂直可動リンクの底板部を利用して、当該垂直可動リンクと上下の各連結リンクとの連結を行えるため、垂直可動リンク及び連結リンクとの連結構造が簡単になると共に、当該垂直可動リンクの底板部にナット体を溶接することで、当該垂直可動リンクに外嵌状態で挿入されたパイプ状の手摺り棒の肉部を貫通する固定ボルトと、前記ナット体との螺合により、垂直可動リンクに対する手摺り棒の固定構造が簡単となる。   According to the invention of claim 4, since the vertical movable link and the upper and lower connecting links can be connected using the bottom plate portion of the vertical movable link having a U-shaped cross section, In addition to simplifying the connecting structure, the nut body is welded to the bottom plate portion of the vertical movable link, so that the fixed portion that penetrates the meat portion of the pipe-like handrail rod inserted in the vertical movable link in an externally fitted state is fixed. By fixing the bolt and the nut body, the structure for fixing the handrail bar to the vertical movable link is simplified.

本発明によれば、方形枠状のフレームに対して上下複数枚の踏板を折畳み可能に連結する左右一対の平行リンク機構を構成していて、当該フレームの垂直部と平行な各垂直可動リンクは、最上段の踏板よりも上方にそれぞれ延設されて、上方延設部が形成され、当該各上方延設部に、それぞれ手摺り棒が着脱可能に取付けられているため、トラックの荷台に対して人が乗降する際には、左右一対の手摺り棒を掴んで乗降でき、トラックの荷台に対する人の乗降姿勢が安定するため、乗降途中でバランスを崩して、不意に転倒する危険がなくなる。また、トラックの荷台に乗降フレームを取付ける場合においても、左右一対の垂直可動リンクに着脱可能に取付けられた各手摺り棒を利用することで、折畳み状態の各踏板を水平配置させる作業が容易となる。   According to the present invention, a pair of left and right parallel link mechanisms for foldably connecting a plurality of upper and lower treads to a rectangular frame-like frame are configured, and each vertical movable link parallel to the vertical portion of the frame is The upper extension plate is formed to extend upward from the uppermost tread, and a handrail bar is detachably attached to each upper extension portion. When a person gets on and off, he / she can get on and off by grabbing a pair of left and right handrail bars, and the person's getting on and off posture of the truck is stabilized. In addition, even when the boarding / removal frame is attached to the truck bed, it is easy to horizontally arrange the folded footboards by using the handrail bars that are detachably attached to the pair of left and right vertical movable links. Become.

特に、手摺り棒をパイプ状にして、垂直可動リンクの上方延設部の外側に外嵌状態で挿入されて、当該手摺り棒は、固定具を介して垂直可動リンクの前記上方延設部に固定される構成にすると、垂直可動リンクの上方延設部に対する手摺り棒の着脱を容易に行える。   In particular, the handrail bar is formed in a pipe shape and inserted in an externally fitted state on the outer side of the upper extension part of the vertical movable link, and the handrail bar is inserted into the upper extension part of the vertical movable link via a fixture. If it is set as the structure fixed to, a handrail stick can be attached or detached easily with respect to the upward extension part of a vertical movable link.

本発明の実施例1のトラック用乗降ステップS1 の踏板A1 ,A2 が開いた状態の斜視図である。Treadle A 1, A 2 of the truck passenger step S 1 of the first embodiment of the present invention is a perspective view of an opened state. 踏板A1 ,A2 が折畳み状態の本発明の実施例1のトラック用乗降ステップS1 の斜視図である。Treadle A 1, A 2 is a perspective view of a truck passenger step S 1 of the first embodiment of the present invention in the folded state. (a),(b)は、それぞれ踏板A1 ,A2 が開いた状態の本発明の実施例1のトラック用乗降ステップS1 の右側面図及び正面図である。FIGS. 7A and 7B are a right side view and a front view of the truck getting on / off step S1 according to the first embodiment of the present invention with the treads A 1 and A 2 opened, respectively. (a),(b)は、それぞれ踏板A1 ,A2 が折畳み状態の本発明の実施例1のトラック用乗降ステップS1 の右側面図及び正面図である。(A), (b) is a right side view and a front view of a truck passenger step S 1 of the first embodiment of the present invention, each step board A 1, A 2 folded state. 図3(a)のX−X線半断面図である。FIG. 4 is a half sectional view taken along line XX in FIG. (a),(b)は、それぞれ図5のY1 −Y1 線、及びY2 −Y2 線の拡大断面図である。(A), (b) is an enlarged sectional view of FIG. 5, respectively of the Y 1 -Y 1 line, and Y 2 -Y 2 line. 本発明の実施例1のトラック用乗降ステップS1 をトラックTの荷台54の側方に設置した状態の斜視図である。It is a perspective view showing a state in which a truck passenger step S 1 of Example 1 was placed on the side of the loading platform 54 of the track T of the present invention. (a),(b),(c)は、本発明の実施例1のトラック用乗降ステップS1 をトラックTの荷台54の側方に設置する順序を示す側面図である。(A), (b), (c) is a side view showing a process of installing a truck passenger step S 1 of the first embodiment of the present invention on the side of the bed 54 of truck T. (a),(b),(c)は、いずれもトラックTの荷台54に対するトラック用乗降ステップS1 の配置を異なる方向から見た図である。(A), (b), (c) is a view of either the layout of the track for boarding step S 1 for the loading platform 54 of the track T from different directions. (a),(b)は、それぞれ本発明の実施例2のトラック用乗降ステップS2 の折畳み状態及び開状態の斜視図である。(A), (b) is a perspective view of a folded state and an open state truck passenger step S 2 of the second embodiment of the present invention, respectively.

以下、複数の実施例を挙げて、本発明について更に詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to a plurality of examples.

最初に、図1〜図6を参照して、本発明の実施例1のトラック用乗降ステップS1 の構成について説明する。実施例1のトラック用乗降ステップS1 は、方形枠状のフレームF1 に対して上下2枚の各踏板A1 ,A2 が左右一対の平行リンク機構P1 を介して折畳み可能に連結された構成である。方形枠状のフレームF1 は、断面円形のパイプで構成されたパイプフレームであって、一組の垂直部F1aが左右方向に対向配置されていると共に、一組の水平部F1bが上下方向に対向配置されて、わん曲状のコーナー部において一体となった形状である。 First, with reference to FIGS, the configuration of the truck passenger step S 1 of the first embodiment of the present invention. In the boarding / alighting step S 1 for the first embodiment, the upper and lower treads A 1 and A 2 are connected to the square frame-like frame F 1 via a pair of left and right parallel link mechanisms P 1 so as to be foldable. It is a configuration. The rectangular frame-shaped frame F 1 is a pipe frame composed of a pipe having a circular cross section, and a set of vertical portions F 1 a are arranged opposite to each other in the left-right direction, and a set of horizontal portions F 1 b. Are opposed to each other in the vertical direction, and are integrated in a curved corner portion.

上下の各踏板A1 ,A2 は、それぞれ断面円形のパイプ体をU字状にわん曲させた各踏板取付け体1,2の各わん曲コーナー部の側の上面に複数本のビス3と固定リベットR0 により一体に取付けられている。各踏板取付け体1,2は、互いに平行に配置された平行配置部1a,2aの一端部が連結部1b,2bで一体に連結されることで、全体形状がU字状に形成され、前記フレームF1 の幅(対向配置された一組の垂直部F1aの外寸法に等しい)と同一の幅を有しているが、上段に配置される踏板A1 の平行配置部1aは、下段に配置される踏板A2 の平行配置部2aよりも短くなっている。上下の各踏板取付け体1,2の各平行配置部1a,2aの基端部(連結部1b,2bと反対側の端部)は、一対一組の各連結片4,5を介して前記フレームF1 の各垂直部F1aに回動可能に連結されている。即ち、一対一組の各連結片4,5は、上下の各踏板取付け体1,2の各平行配置部1a,2aに対しては複数本の固定リベットR1 により一体化されていると共に、フレームF1 の各垂直部F1aに対しては1本の連結リベットR2 により回動可能に連結されており、1本の連結リベットR2 により回動可能に連結された軸部分を、それぞれ回動連結軸C1 ,C2 と称する。 Each of the upper and lower treads A 1 and A 2 has a plurality of screws 3 on the upper surface on the side of each curved corner portion of each tread mounting body 1 and 2 in which a pipe body having a circular cross section is bent in a U shape. It is integrally attached with a fixed rivet R0 . Each of the tread board attachment bodies 1 and 2 is formed in a U-shape as a whole by integrally connecting one end portions of the parallel arrangement portions 1a and 2a arranged in parallel with each other at the connection portions 1b and 2b. Although having the same width as the width of the frame F 1 (equal to the outer dimension of the set of opposed vertical portions F 1 a), the parallel arrangement portion 1a of the tread A 1 disposed in the upper stage is: is shorter than the parallel arrangement portion 2a of the step board a 2 disposed in the lower. The base end portions (end portions opposite to the connecting portions 1b and 2b) of the parallel arrangement portions 1a and 2a of the upper and lower tread board mounting bodies 1 and 2 are connected to each other via the pair of connecting pieces 4 and 5, respectively. It is rotatably connected to each vertical part F 1 a of the frame F 1 . That is, each pair of connecting pieces 4 and 5 is integrated with a plurality of fixed rivets R 1 with respect to the parallel arrangement portions 1a and 2a of the upper and lower tread plate mounting bodies 1 and 2, respectively. for each vertical portion F 1 a of frames F 1 are pivotally connected by a connecting rivet R 2 of one, the shaft portion which is pivotally connected by a connecting rivet R 2 of one, These are respectively referred to as rotational connecting shafts C 1 and C 2 .

一方、図5及び図6に詳細に示されるように、上下の各踏板A1 ,A2 の各踏板取付け体1,2は、前記フレームF1 の各垂直部F1aから等距離の部分において、それぞれ垂直可動リンクL1 に対して連結リベットR3 により回動可能に連結されており、各連結リベットR3 を介して垂直可動リンクL1 における各踏板取付け体1,2の平行配置部1a,2aと連結された軸部分を、それぞれ回動連結軸C3 ,C4 と称する。ここで、フレームF1 の垂直部F1aにおける上下の各回動連結軸C1 ,C2 の間は、垂直固定リンクL2 として機能していると共に、一体化された各踏板取付け体1,2の各平行配置部1a,2aと各連結片4,5における左右の各回動連結軸C1 ,C3 の間、及び各回動連結軸C2 ,C4 の間は、それぞれ連結リンクL3 ,L4 として機能している。そして、左右に平行配置された垂直可動リンクL1 及び垂直固定リンクL2 と、上下に平行配置された各連結リンクL3 ,L4 との計4本のリンクL1 〜L4 により、平行リンク機構P1 が形成される。 On the other hand, as shown in detail in FIGS. 5 and 6, the tread plate mounting bodies 1 and 2 of the upper and lower tread plates A 1 and A 2 are portions equidistant from the vertical portions F 1 a of the frame F 1. Are connected to the vertical movable links L 1 by the connecting rivets R 3 so as to be rotatable, and the parallel arrangement portions of the tread board mounting bodies 1 and 2 in the vertical movable links L 1 through the connecting rivets R 3. The shaft portions connected to 1a and 2a are referred to as rotational connection shafts C 3 and C 4 , respectively. Here, among the frames F 1 in the vertical portion F 1 the respective rotation connection shaft C 1 of the upper and lower in a, C 2, together with the functions as a vertical fixed link L 2, are integrated each step board mounting body 1, the parallel arrangement portion 1a of the 2, 2a and between the left and right respective rotary coupling shaft C 1, C 3 of the connecting members 4, 5, and between the respective rotary coupling shaft C 2, C 4, respectively connecting links L 3 , L 4 . A total of four links L 1 to L 4 , that is, a vertical movable link L 1 and a vertical fixed link L 2 arranged in parallel on the left and right sides, and connecting links L 3 and L 4 arranged in parallel on the top and bottom, are parallel. A link mechanism P 1 is formed.

また、フレームF1 の上方の水平部F1bには、左右一対のフック6が一体に取付けられている。当該一対のフック6は、図7及び図8に示されるように、下方に開口したコの字形をなしていて、トラックTの床板51と、開状態のあおり板52との間に形成される隙間53に挿入されると共に、開状態のあおり板52の上端部の外側に嵌着されることで、トラックTの荷台54の側方に、トラック用乗降ステップS1 を垂直姿勢を保持して、開状態のあおり板52に対して吊下げ状にして設置するための引掛け具である。 A pair of left and right hooks 6 are integrally attached to the horizontal portion F 1 b above the frame F 1 . As shown in FIGS. 7 and 8, the pair of hooks 6 has a U-shape that opens downward, and is formed between the floor plate 51 of the track T and the open side plate 52. while being inserted into the gap 53, by being fitted on the outside of the upper end of the tilt plate 52 in the open state, the side of the bed 54 of the truck T, a truck passenger step S 1 holds the vertical position This is a hook for installing the lift plate 52 in a suspended state with respect to the open tilt plate 52.

垂直可動リンクL1 は、横断面がコの字形をしたロット状の部材であって、その開口側が外側を向いて配置されることで、図5及び図6に示されるように、前記各踏板取付け体1,2の平行配置部1a,2aと、手摺り棒Hの底板部11とが、連結リベットR3 及びスペーサ筒13を介して回動可能に連結されている。よって、各踏板取付け体1,2の平行配置部1a,2aと、垂直可動リンクL1 の底板部11との間には、手摺り棒挿入空間14が形成される。垂直可動リンクL1 におけるリンクとして機能する部分は、回動連結軸C3 の直上の部分までであるが、当該垂直可動リンクL1 は、回動連結軸C3 を超えて大きく上方に延設されることで、後述のパイプ状の手摺り棒Hを外嵌状態で挿入するための上方延設部L1aが一体に形成されていることが、本発明の特徴を構成している。 The vertical movable link L 1 is a lot-shaped member having a U-shaped cross section, and the opening side of the vertical movable link L 1 faces the outside. As shown in FIG. 5 and FIG. The parallel arrangement parts 1 a and 2 a of the attachment bodies 1 and 2 and the bottom plate part 11 of the handrail bar H are connected to each other via a connection rivet R 3 and a spacer cylinder 13. Therefore, parallel placement portion 1a, 2a of each step board mounting bodies 1 and 2 and between the bottom plate portion 11 of the vertical movable link L 1, handrail rod insertion space 14 is formed. The portion that functions as the link in the vertical movable link L 1 is up to the portion immediately above the rotation connecting shaft C 3 , but the vertical movable link L 1 extends greatly above the rotation connecting shaft C 3. Thus, the feature of the present invention is that an upwardly extending portion L 1 a for inserting a pipe-shaped handrail bar H described later is integrally formed.

即ち、図1〜図6に示されているように、手摺り棒Hは、パイプ状の部材であって、下端面が前記スペーサ筒13に当接するまで、垂直可動リンクL1 の上方延設部L1aに外嵌状態で相対的に挿入される。垂直可動リンクL1 の上方延設部L1aの途中には、ナット体15が底板部11に固定され、前記上方延設部L1aの外側に手摺り棒Hが挿入されて、その下端面がスペーサ筒13に当接した状態で、当該手摺り棒Hの下端部に近い部分に設けられた貫通孔16に握り部付ボルト体17を挿通させて、前記ナット体15に螺合させることで、垂直可動リンクL1 の上方延設部L1aに対して手摺り棒Hを仮固定される。なお、手摺り棒Hの上端開口は、キャップ体8で閉塞されている。 That is, as shown in FIGS. 1 to 6, the handrail bar H is a pipe-like member, and extends upward from the vertical movable link L 1 until the lower end surface contacts the spacer cylinder 13. It is relatively inserted into the part L 1 a in an externally fitted state. The nut body 15 is fixed to the bottom plate portion 11 in the middle of the upper extending portion L 1 a of the vertical movable link L 1 , and the handrail bar H is inserted outside the upper extending portion L 1 a, With the lower end surface in contact with the spacer cylinder 13, a bolt body 17 with a grip portion is inserted into a through hole 16 provided in a portion near the lower end portion of the handrail bar H and screwed into the nut body 15. By doing so, the handrail bar H is temporarily fixed to the upward extending portion L 1 a of the vertical movable link L 1 . Note that the upper end opening of the handrail bar H is closed by the cap body 8.

そして、トラックTの荷台54の側方にトラック用乗降ステップS1 を垂直に設置するには、図7及び図8に示されるように、トラックTの一側方のあおり板52を外方に180°回動させることで、当該あおり板52を開状態にすると、当該開状態のあおり板52と床板51との間に隙間53が形成される。折畳み状態のトラック用乗降ステップS1 の左右一対の垂直可動リンクL1 の各上方延設部L1aに外嵌状態で手摺り棒Hをそれぞれ挿入して、当該手摺り棒Hを握り部付ボルト体17により上方延設部L1aに固定しておく。この状態で、図8(a)に示されるように、作業者Mは、トラック用乗降ステップS1 の左右一対の垂直可動リンクL1 の各上方延設部L1aに一体に取付けられた各手摺り棒Hを持って当該乗降ステップS1 を持ち上げて、フレームF1 の上方の水平部F1bに取付けられた一対のフック6の挿入板部6aを前記隙間53に挿入すると、乗降ステップS1 の自重により、当該一対のフック6が開状態のあおり板52の上端部に嵌着されることで、フレームF1 の上半部があおり板52に密着して、開状態のあおり板52に対して乗降ステップS1 が垂直を保持して、吊下げ状となって設置される。 Then, in order to install the loading / unloading step S 1 vertically on the side of the loading platform 54 of the truck T, as shown in FIGS. 7 and 8, the side plate 52 on one side of the truck T is moved outward. When the tilt plate 52 is opened by turning 180 °, a gap 53 is formed between the open tilt plate 52 and the floor plate 51. A handrail bar H is inserted into each of the upwardly extending portions L 1 a of the pair of left and right vertical movable links L 1 of the folding loading step S 1 for the truck in a folded state, and the handrail bar H is gripped. It is fixed to the upwardly extending portion L 1 a by the attached bolt body 17. In this state, as shown in FIG. 8 (a), the operator M is integrally attached to the respective upwardly extending portion L 1 a pair of left and right vertical movable link L 1 track for boarding step S 1 When each of the handrail bars H is held and the boarding step S 1 is lifted and the insertion plate portions 6 a of the pair of hooks 6 attached to the horizontal portion F 1 b above the frame F 1 are inserted into the gap 53, The pair of hooks 6 are fitted to the upper end portions of the open tilt plate 52 by the weight of step S 1 , so that the upper half of the frame F 1 is in close contact with the tilt plate 52, and the open tilt is set. holding the boarding step S 1 with respect to the plate 52 vertically, are placed in a suspended form.

上記の状態で、一対の手摺り棒Hを作業者Mの側に引き寄せると、図8(b),(c)に示されるように、閉状態の平行リンク機構P1 が徐々に開かれて、上下の各踏板取付け体1,2が水平配置される。これにより、各踏板取付け体1,2の各平行配置部1a,2aにおける連結リンクL3 ,L4 を形成している部分の各端面が、フレームF1 の垂直部F1aの前面部に当接することで、これを超える回動が阻止されて、各踏板取付け体1,2に一体に取付けられた各踏板A1 ,A2 の水平姿勢が維持される。各踏板取付け体1,2の各平行配置部1a,2aの端面が上記のように作用するように、連結リンクL3 ,L4 を構成する連結片4,5におけるフレームF1 の垂直部F1aである垂直固定リンクL2 の側の部分は、上方に屈曲されている。なお、最後に、作業者Mの一方の足により、下段の踏板A2 を下方に踏み付けることで、各踏板取付け体1,2を確実に回動端に位置させられる。これにより、図7,図8(c)及び図9に示されるように、トラックTの開状態のあおり板52に、左右一対の手摺り棒Hを備えた乗降ステップS1 が垂直を保持して吊下げ状となって設置される。即ち、乗降ステップS1 のフレームF1 の下方の水平部F1bは、地面から離れて配置され、左右一対の手摺り棒Hのみが、床板51に対して上方に配置されている。 When the pair of handrail bars H are pulled toward the worker M in the above state, the closed parallel link mechanism P 1 is gradually opened as shown in FIGS. 8B and 8C. The upper and lower tread board mounting bodies 1 and 2 are horizontally arranged. Thus, the parallel arrangement portion 1a of the step boards mounting body 2, each end face of the portion forming the connecting link L 3, L 4 in 2a is, the front surface of the vertical portion F 1 a of frames F 1 By abutting, the rotation beyond this is prevented, and the horizontal postures of the treads A 1 and A 2 attached integrally to the tread plate mounting bodies 1 and 2 are maintained. The vertical portion F of the frame F 1 in the connecting pieces 4 and 5 constituting the connecting links L 3 and L 4 so that the end faces of the parallel placement portions 1a and 2a of the tread board mounting bodies 1 and 2 act as described above. A portion on the side of the vertical fixed link L 2 that is 1 a is bent upward. Note, finally, by one of the feet of the operator M, by stomp lower stepping plate A 2 below, is is positioned securely rotating end of each step board mounting bodies 1 and 2. As a result, as shown in FIGS. 7, 8 (c), and 9, the boarding / alighting step S 1 including a pair of left and right handrail bars H is held vertically on the open plate 52 of the track T. It is installed in a suspended shape. That is, the horizontal portion F 1 b below the frame F 1 in the getting-on / off step S 1 is arranged away from the ground, and only the pair of left and right handrail bars H are arranged above the floor plate 51.

このように、一対の垂直可動リンクL1 の各上方延設部L1aに一体に取付けられた各手摺り棒Hを利用することで、トラックTの荷台54の側方に対する乗降ステップS1 の取付け自体を容易に行える。 In this way, by using each handrail bar H integrally attached to each upwardly extending portion L 1 a of the pair of vertical movable links L 1 , a boarding / alighting step S 1 on the side of the loading platform 54 of the truck T is performed. Can be easily installed.

このため、トラックTの荷台54に対して作業者Mが乗降する際には、図7及び図8(c)に示されるように、左右一対の手摺り棒Hを両手で掴んだ姿勢で乗降を行えるので、作業者Mは、安定した姿勢で荷台54に対して乗降できる。よって、トラックTの荷台54に対する乗降の途中で、作業者Mがバランスを崩して転倒する等の危険がなくなる。特に、大型のトラックTでは、荷台54の高さは、相当に高くなるので、大型のトラックTの荷台54に対する乗降においては、特に効果がある。   For this reason, when the worker M gets on and off the loading platform 54 of the truck T, as shown in FIGS. 7 and 8C, the user gets on and off with a pair of left and right handrail bars H held by both hands. Therefore, the worker M can get on and off the loading platform 54 with a stable posture. Therefore, there is no danger that the operator M falls out of balance and falls while the truck T is getting on and off the loading platform 54. In particular, in the large truck T, the height of the loading platform 54 is considerably high, so that it is particularly effective in getting on and off the loading platform 54 of the large truck T.

また、トラックTの荷台54に対する乗降ステップS1 の配置位置を変更するには、踏板A1 ,A2 が開状態のままで、左右一対の手摺り棒Hを持って移動させられるので、トラックTの荷台54に対する配置位置の変更も容易である。なお、乗降ステップS1 の非使用時には、図2に示されるように、一対の手摺り棒Hを分離させて、各踏板A1 ,A2 を折り畳んでおく。 In addition, in order to change the position of the loading / unloading step S 1 with respect to the loading platform 54 of the truck T, the tread plates A 1 and A 2 can be moved with the pair of left and right handrail bars H with the tread plates A 1 and A 2 open. It is easy to change the position of the T with respect to the loading platform 54. When the boarding / alighting step S 1 is not used, as shown in FIG. 2, the pair of handrail bars H are separated and the tread plates A 1 and A 2 are folded.

次に、図10を参照して、実施例2のトラック用乗降ステップS2 について、実施例1のトラック用乗降ステップS1 と異なる部分についてのみ、簡単に説明する。乗降ステップS2 は、高い荷台を有する大型のトラックについて使用されるものであって、実施例1の乗降ステップS1 に対して最下段の踏板A3 を付加して、計3段の踏板A1 〜A3 を備えている。 Next, with reference to FIG. 10, only a portion different from the track getting on / off step S 1 of the first embodiment will be briefly described with respect to the truck getting on / off step S 2 of the second embodiment. The boarding / alighting step S 2 is used for a large truck having a high loading platform, and the bottom board A 3 is added to the boarding / alighting step S 1 of the first embodiment to obtain a total of 3 stages of board A. 1 to A 3 are provided.

フレームF2 は、長いU字状をなしていて、平行配置された一対の垂直部F2aの上端側のみが水平部F2bで連結された構成である。即ち、中段及び上段の各踏板A1 ,A2 は、平行リンク機構P1 により、フレームF2 の側に折り畳まれる構成となっており、中段の踏板取付け体2と下段の踏板取付け体7とは、別の垂直可動リンクL11で連結されることで、当該垂直可動リンクL11と、当該垂直可動リンクL11に対して平行配置されて、フレームF2 の垂直部F2aの高さ方向の中央よりも下側の垂直固定リンクL12と、中段及び下段の各踏板取付け体2,7の各平行配置部2a,7aのフレームF2 の側の各部分が連結リンクL13,L14となって、計4本のリンクL1 ,L12,L13,L14により、別の平行リンク機構P2 が形成され、当該平行リンク機構P2 により、中段及び下段の各踏板A2 ,A3 がフレームF2 の側に折り畳まれる。 The frame F 2 has a long U shape, and has a configuration in which only the upper ends of a pair of parallel-arranged vertical portions F 2 a are connected by a horizontal portion F 2 b. That is, the middle and upper treads A 1 and A 2 are folded to the frame F 2 side by the parallel link mechanism P 1 , and the middle tread board mounting body 2 and the lower tread board mounting body 7 Are connected by another vertical movable link L 11 so as to be arranged in parallel to the vertical movable link L 11 and the vertical movable link L 11 , and the height of the vertical portion F 2 a of the frame F 2. The vertical fixed link L 12 below the center of the direction and the portions on the frame F 2 side of the parallel arrangement portions 2a and 7a of the tread plate mounting bodies 2 and 7 at the middle and lower steps are connected to the link links L 13 and L becomes 14, the total of four links L 1, L 12, L 13 , L 14, another parallel link mechanism P 2 is formed, the parallel link mechanism by P 2, each of the middle and lower stepping plate a 2 , A 3 are folded to the frame F 2 side.

また、上記実施例1,2では、いずれも垂直可動リンクL1 を上方に延設された上方延設部L1aを形成して、当該上方延設部L1aに外嵌状態でパイプ状の手摺り棒Hを挿入する構成であるため、当該上方延設部L1aに対する手摺り棒Hが安定して取付けられ、しかも当該上方延設部L1aに対する手摺り棒Hの着脱が容易である利点があるが、垂直可動リンクの上方延設部に対する手摺り棒の着脱構造は、上記構造に限定されず、いかなる構造であってもよい。 In the first and second embodiments, the upper extending portion L 1 a extending upward from the vertical movable link L 1 is formed, and the pipe is fitted to the upper extending portion L 1 a in an externally fitted state. since it is configured to insert the Jo of handrail rods H, mounted handrail rods H with respect to the upwardly extending portion L 1 a stable, yet removable of handrail rods H with respect to the upwardly extending portion L 1 a However, the structure for attaching and detaching the handrail bar to the upward extending portion of the vertical movable link is not limited to the above structure, and may be any structure.

1 〜A3 :踏板
1 ,F2 :フレーム
1a,F2a:フレームの垂直部
1b,F2b:フレームの水平部
H:手摺り棒
1 ,L11:垂直可動リンク
1a:垂直可動リンクの上方延設部
2 ,L12:垂直固定リンク(フレームの垂直部)
3 ,L4 ,L13,L14:連結リンク
1 ,P2 :平行リンク機構
2 ,R3 :最上段の連結リベット(連結ピン)
1 ,S2 :トラック用乗降ステップ
T:トラック
1,2:踏板取付け体
1a,2a:踏板取付け体の平行配置部
4, 5:連結片
6:フック
11:垂直可動リンクの底板部
12:垂直可動リンクの側板部
13:スペーサ筒
14:手摺り棒挿入空間
51:トラックの床板
52:トラックのあおり板
53:開状態のあおり板と床板との隙間
54:トラックの荷台
A 1 to A 3 : Footboards F 1 and F 2 : Frame F 1 a and F 2 a: Vertical part of the frame F 1 b and F 2 b: Horizontal part of the frame
H: Handrail rod L 1 , L 11 : Vertical movable link
L 1 a: Upward extending portion of the vertical movable link L 2 , L 12 : Vertical fixed link (vertical portion of the frame)
L 3 , L 4 , L 13 , L 14 : Connection links P 1 and P 2 : Parallel link mechanisms R 2 and R 3 : Uppermost connection rivets (connection pins)
S 1 , S 2 : Truck entry / exit steps
T: Track
1, 2: Tread board mounting body 1a, 2a: Parallel arrangement part of the tread board mounting body
4, 5: Connecting piece
6: Hook
11: Bottom plate part of vertical movable link
12: Side plate part of vertical movable link
13: Spacer tube
14: Handrail stick insertion space
51: Truck floorboard
52: Track plate
53: Gap between the open and closed floor board
54: Truck bed

Claims (4)

方形枠状のフレームに対して上下複数枚の踏板が左右一対の平行リンク機構を介して折畳み可能に連結され、当該フレームの上方の水平部に、トラックの床板と開状態のあおり板との隙間に嵌入される左右一対のフックが取付けられたトラック用乗降ステップであって、
前記各平行リンク機構を構成していて、前記フレームの垂直部と平行に配置された各垂直可動リンクは、最上段の踏板よりも上方にそれぞれ延設され、当該各垂直可動リンクの上方延設部に、それぞれ手摺り棒が着脱可能に取付けられる構成であることを特徴とするトラック用乗降ステップ。
A plurality of upper and lower treads are connected to a rectangular frame-like frame via a pair of left and right parallel link mechanisms so that they can be folded, and there is a gap between the floor of the truck and the open side plate in the horizontal part above the frame. A loading / unloading step for a truck to which a pair of left and right hooks to be fitted is attached,
The vertical movable links that constitute each of the parallel link mechanisms and are arranged in parallel with the vertical portion of the frame extend above the uppermost tread, and extend upward from the vertical movable links. A loading / unloading step for trucks, wherein a handrail bar is detachably attached to each part.
前記垂直可動リンクの上方延設部の外側に、パイプ状の前記手摺り棒が外嵌状態で挿入されて、当該手摺り棒は、固定具を介して垂直可動リンクの前記上方延設部に固定される構成であることを特徴とする請求項1に記載のトラック用乗降ステップ。   The pipe-shaped handrail rod is inserted in an externally fitted state on the outside of the vertically extending portion of the vertical movable link, and the handrail rod is inserted into the upwardly extending portion of the vertically movable link via a fixture. The step of getting on and off the truck according to claim 1, wherein the step is a fixed configuration. 前記垂直可動リンクと、前記平行リンク機構を構成する各段の各連結リンクとは連結ピンを介して連結され、前記垂直可動リンクの上方延設部の上端から外嵌状態で挿入される前記手摺り棒は、最上段の前記連結ピンに当接することで、下動が停止される構成であることを特徴とする請求項2に記載のトラック用乗降ステップ。   The vertical movable link and the connection links of each stage constituting the parallel link mechanism are connected via a connection pin, and the hand is inserted in an externally fitted state from the upper end of the upwardly extending portion of the vertical movable link. The truck loading / unloading step according to claim 2, wherein the sliding bar is configured to stop the downward movement by contacting the uppermost connection pin. 前記垂直可動リンクの横断面は、外側に開口した断面コの字形であることを特徴とする請求項2又は3に記載のトラック用乗降ステップ。   The step of getting on and off the truck according to claim 2 or 3, wherein a cross section of the vertical movable link has a U-shaped cross section opened to the outside.
JP2017115549A 2017-06-13 2017-06-13 Getting on and off steps for trucks Active JP6685556B2 (en)

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US10596971B2 (en) 2001-10-16 2020-03-24 Lund Motion Products, Inc. Retractable vehicle step
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US10604077B2 (en) 2013-09-27 2020-03-31 Lund, Inc. Modular rail and step system
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US10773670B2 (en) 2015-06-05 2020-09-15 Lund Motion Products, Inc. Retractable step and side bar assembly for raised vehicle
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US11180100B2 (en) 2015-06-05 2021-11-23 Lund Motion Products, Inc. Retractable step and side bar assembly for raised vehicle
US12090958B2 (en) 2015-06-05 2024-09-17 Lund Motion Products, Inc. Horizontal retractable vehicle step
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US11999309B2 (en) 2015-06-05 2024-06-04 Lund Motion Products, Inc. Retractable step and side bar assembly for raised vehicle
US11021108B2 (en) 2015-08-04 2021-06-01 T-Max (Hangzhou) Technology Co., Ltd. Vehicle and vehicle step apparatus with multiple drive motors
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