JP2011157029A - Cargo receiving deck lifting device - Google Patents

Cargo receiving deck lifting device Download PDF

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JP2011157029A
JP2011157029A JP2010022039A JP2010022039A JP2011157029A JP 2011157029 A JP2011157029 A JP 2011157029A JP 2010022039 A JP2010022039 A JP 2010022039A JP 2010022039 A JP2010022039 A JP 2010022039A JP 2011157029 A JP2011157029 A JP 2011157029A
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load receiving
vehicle
receiving platform
cargo
platform
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JP5777285B2 (en
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Yasuo Tsujihama
康雄 辻濱
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Shinmaywa Industries Ltd
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Shinmaywa Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cargo receiving deck lifting device for grounding the tip of a cargo receiving deck formed in a long size while restraining manufacturing cost, and preventing reduction in cargo box loading capacity. <P>SOLUTION: The cargo receiving deck lifting device 100 includes a parallel link mechanism 1 arranged in the rear of a vehicle and connecting the tip of respective upper-lower arms by a connecting body, and the cargo receiving deck 3 connected to the parallel link mechanism 1 via the connecting body and lifting between the ground surface and a loading space. The cargo receiving deck 3 rotates between a horizontal state and a grounding state of being inclined from the horizontal state. The cargo receiving deck 3 is rotatably constituted to the connecting body around an upper arm connecting part of connecting an upper arm in the connecting body, and the connecting body is provided with a lower arm connecting part of connecting a lower arm under the upper arm connecting part, and a projection part 15 projecting downward more than the lower arm connecting party and grounding on the ground surface. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、荷受台が水平状態から傾斜して接地状態となる荷受台昇降装置に関する。   The present invention relates to a load receiving table lifting apparatus in which a load receiving table is inclined from a horizontal state and brought into a grounded state.

荷受台昇降装置としては、図6(a)のように、車両後部で平行リンク機構を介して荷受台91が地面と荷台81との間を昇降可能に設けられたものが知られている(例えば特許文献1)。平行リンク機構は、上側のテンションアーム92及び下側のコンプレッションアーム93の先端がリンクアーム94に連結されてなり、当該リンクアーム94に荷受台91が連結されている。   As shown in FIG. 6 (a), there is known a load receiving platform lifting / lowering device in which a load receiving platform 91 can be moved up and down between the ground and the loading platform 81 via a parallel link mechanism at the rear of the vehicle ( For example, Patent Document 1). In the parallel link mechanism, the upper ends of the upper tension arm 92 and the lower compression arm 93 are connected to the link arm 94, and the load receiving table 91 is connected to the link arm 94.

荷受台91は、荷台81の高さから水平状態を維持したまま最下降状態まで下降される。最下降状態となるとき、リンクアーム94下端に配されたローラ部材R1が接地する。ローラ部材R1は、コンプレッションアーム93と同様に軸94aに軸支されており、コンプレッションアーム93の外側方に配されている。荷受台91は最下降状態からさらに荷受台91を傾斜させて先端部を接地させることで、荷受台91に台車等を用いた荷物の積み降ろし作業の効率を向上させる。   The loading platform 91 is lowered from the height of the loading platform 81 to the lowest lowered state while maintaining the horizontal state. When the lowermost state is reached, the roller member R1 disposed at the lower end of the link arm 94 is grounded. The roller member R <b> 1 is pivotally supported on the shaft 94 a similarly to the compression arm 93, and is disposed on the outer side of the compression arm 93. The load receiving platform 91 further improves the efficiency of loading and unloading work using a cart or the like on the load receiving platform 91 by further tilting the load receiving platform 91 from the lowest position and grounding the tip.

こうした荷受台昇降装置は後突防止手段(バンパ)として兼用されることもあった。例えば、走行状態に荷受台を車両後方に起立させるものには、衝突エネルギを吸収する部材を配して後突防止手段の機能性向上を図った構成もある(例えば特許文献2)。   Such a cargo receiving platform lifting / lowering device is sometimes used also as a rear collision prevention means (bumper). For example, there is a configuration in which a material that absorbs collision energy is arranged to improve the functionality of the rear collision prevention means in order to raise the cargo receiving stand to the rear of the vehicle in the traveling state (for example, Patent Document 2).

特開2004−142706号公報JP 2004-142706 A 実開平5−24434号公報Japanese Utility Model Publication No. 5-24434

ところで、荷受台91の長さLG1を大きくして荷物積込量の増加を図ると、図6(b)の荷受台910のように、先端部911が接地せずに地面から距離Hだけ離間することがある。この場合、荷受台への台車等を用いた荷物の積み降ろし作業が煩雑となり、荷受台昇降装置の利便性が大きく低下する。   By the way, when the length LG1 of the load receiving base 91 is increased to increase the load loading amount, the tip 911 is not grounded and is separated from the ground by a distance H as in the case of the load receiving base 910 in FIG. 6B. There are things to do. In this case, the work of loading and unloading the load using a cart or the like on the load receiving table becomes complicated, and the convenience of the load receiving table lifting device is greatly reduced.

先端部911が離間するのは、長尺化された荷受台910とすることで(LG2>LG1)、荷受台91裏面(地面との接地面側)に設けられた補強枠(スチフナ)91a等が、先端部911の接地前に地面に接触するためである。荷受台910は、主にその幅方向を長手方向とする平板部材が並設して組み合わされてなり、図6(c)のように、新たに平板部材のユニット体912を組み足すだけで、長尺化された荷受台910とすることができる。つまり、荷受台91の基端部や先端部は設計変更することなく同一部材が利用可能なため、製造コストの上昇を防止する利点を得る一方で、上述した荷受台昇降装置の利便性の低下を招いてしまう。   The distal end portion 911 is separated by using an elongated load receiving table 910 (LG2> LG1), and a reinforcing frame (stiffener) 91a provided on the back surface of the load receiving table 91 (the ground contact surface side). This is because the tip 911 contacts the ground before the grounding. The load receiving platform 910 is mainly formed by combining flat plate members whose longitudinal direction is the width direction, and as shown in FIG. 6C, by simply adding a unit body 912 of the flat plate member, It can be set as the elongate load receiving stand 910. That is, since the same member can be used without changing the design of the base end portion and the tip end portion of the load receiving base 91, the advantage of preventing an increase in manufacturing cost is obtained, while the convenience of the above-described load receiving base lifting device is reduced. Will be invited.

そこで、単にリンクアーム94のローラ部材R1を拡大して荷受台910の傾斜角度を大きくしても、ローラ部材R1が荷台81に干渉してしまうため好ましくない。   Therefore, simply enlarging the roller member R1 of the link arm 94 to increase the inclination angle of the load receiving platform 910 is not preferable because the roller member R1 interferes with the loading platform 81.

荷台81と干渉しないように荷受台911にローラ部材R1を配すると、荷受台910が厚肉化されてしまう。車両長さにはその厚肉部も含まれるため、その厚肉部の長さ分だけ荷箱長さが短くなって荷箱積載容量の縮小化を招く。例えば、上記の特許文献2の荷受台昇降装置(図7参照)も、衝突エネルギの吸収部材91aによって厚肉化されており、同様に荷箱積載容量の縮小化を招く。また、この荷受台昇降装置は、荷受台900の基端部912に延出部91bを設けて傾斜角度を大きくして先端部を接地させているが、基端部912は荷受台900に固着され、延出部91bは基端部912に固着されており、荷受台91が起立すると後方に突出して荷箱積載容量の縮小化がさらに顕著となる。   If the roller member R1 is disposed on the load receiving table 911 so as not to interfere with the loading table 81, the load receiving table 910 is thickened. Since the thick part is included in the vehicle length, the length of the packing box is shortened by the length of the thick part, resulting in a reduction in the packing box load capacity. For example, the above-described load receiving / lifting device (see FIG. 7) of Patent Document 2 is also thickened by the collision energy absorbing member 91a, which similarly reduces the load carrying capacity. In addition, the load receiving platform lifting device is provided with an extending portion 91b at the base end portion 912 of the load receiving stand 900 to increase the inclination angle, and the tip end portion is grounded, but the base end portion 912 is fixed to the load receiving stand 900. The extending portion 91b is fixed to the base end portion 912. When the load receiving base 91 stands up, the extending portion 91b protrudes rearward, and the reduction of the load carrying capacity becomes more remarkable.

本発明は、上記問題を鑑みてなされ、製造コストを抑制しつつ長尺化された荷受台の先端を接地させるとともに、荷箱積載容量の低下を防止した荷受台昇降装置の提供を目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a load receiving platform lifting / lowering device that grounds the front end of a long load receiving platform while suppressing the manufacturing cost and prevents a reduction in the load capacity of the packing box. .

本発明では、の構成を有する荷受台昇降装置を用いている。   In the present invention, a cargo receiving platform lifting apparatus having the structure is used.

車両後方に設けられて上下の各アームの先端が連結体で連結されてなる平行リンク機構と、前記連結体を介して前記平行リンク機構に連結されるとともに地面と荷台との間を昇降する荷受台とを有し、前記荷受台が水平状態とその水平状態から傾斜した接地状態との間で回動する荷受台昇降装置であって、前記荷受台は、前記連結体において前記上アームが連結される上アーム連結部を中心として、前記連結体に対して回動可能に構成されており、前記連結体には、当該上アーム連結部の下方に下アームが連結される下アーム連結部と、当該下アーム連結部よりも下方に突出するとともに地面に接地する突出部とが設けられている構成とする。   A parallel link mechanism that is provided at the rear of the vehicle and is connected to the parallel link mechanism via the connecting body and that moves up and down between the ground and the loading platform. A load receiving table lifting device that rotates between a horizontal state and a grounded state inclined from the horizontal state, wherein the load receiving unit is connected to the upper arm in the connecting body. A lower arm coupling portion that is configured to be rotatable with respect to the coupling body around the upper arm coupling portion, and a lower arm coupled to the lower side of the upper arm coupling portion. In addition, a protruding portion that protrudes below the lower arm connecting portion and contacts the ground is provided.

前記接地状態の荷受台において、前記荷受台の最下端部は、当該荷受台の先端部と、前記突出部の突出先端とを結ぶ仮想線上または仮想線よりも上側に設けられている構成とすることが望ましい。   In the load receiving stand in the grounded state, the lowermost end portion of the load receiving stand is provided on a virtual line connecting the tip end portion of the load receiving stand and the protruding tip end of the protruding portion or above the virtual line. It is desirable.

また、前記荷受台は、前記荷台の高さ位置で水平状態となるとともに、さらに車両前方に回動して起立状態となる構成とすることができる。特に前記荷受台が起立状態の際には、前記連結体は、前記突出部が下方向に突出した状態を維持するように配されているものとする。
前記荷受台は、前記連結体の後方端部に対して、下端部が接離可能に連結されている。
Moreover, the said load receiving stand can be set as the structure which becomes a horizontal state in the height position of the said load carrier, and also rotates further ahead of a vehicle and becomes a standing state. In particular, when the load receiving stand is in a standing state, the connecting body is arranged so as to maintain a state in which the protruding portion protrudes downward.
The load receiving platform is connected to a rear end portion of the connecting body so that a lower end portion thereof can contact and separate.

また、前記突出部にはローラ部材が軸支されており、前記連結体において、前記ローラ部材の軸支部は前記下アーム連結部に対して離間配置された構成も可能である。
前記ローラ部材の軸支部は、前記平行リンク機構の軸支部よりも車両後方かつ下方の位置に設けられている構成も可能である。
なお、上述のいずれかに記載の荷受台昇降装置が搭載された車両であって、前記荷台の下方に後突防止手段が設けられている構成でも構わない。
Further, a roller member is pivotally supported on the projecting portion, and in the coupling body, a configuration in which the pivotal support portion of the roller member is spaced from the lower arm coupling portion is also possible.
A configuration in which the shaft support portion of the roller member is provided at a position behind the vehicle and below the shaft support portion of the parallel link mechanism is also possible.
In addition, it may be a vehicle on which any of the above-described cargo receiving platform lifting devices is mounted, and a configuration in which a rear collision prevention unit is provided below the cargo platform may be employed.

本発明の構成によれば、荷受台は平行リンク機構の連結体における上アーム連結部を中心として連結体に対して回動自在に連結されているので、荷受台が回動しても連結体は回動しない構成とすることができる。そして、荷受台が最下降状態のときには、下アーム連結部よりも下方に突出した突出部が接地する構成とするため、下アーム連結部の軸を兼用してローラ部材を配する場合と異なり、荷受台を長尺化する際に荷受台の先端側に用いる部材をそのまま用いても、荷受台の先端部が接地した状態で荷受台を最下降状態から傾斜させることができる。
よって、製造コストの上昇を抑制したものとしつつ、荷受台を起立させても突出部が後方に突出することがないので荷箱の積載容量を維持することができる。
According to the configuration of the present invention, since the load receiving table is rotatably connected to the connecting body around the upper arm connecting portion in the connecting body of the parallel link mechanism, the connecting body can be connected even if the load receiving table rotates. Can be configured not to rotate. And, when the load receiving platform is in the lowest lowered state, since the protruding portion protruding downward from the lower arm connecting portion is configured to contact the ground, unlike the case where the roller member is arranged also using the shaft of the lower arm connecting portion, Even if the member used on the front end side of the load receiving table is used as it is when the load receiving table is elongated, the load receiving table can be inclined from the lowest lowered state with the front end portion of the load receiving table being in contact with the ground.
Therefore, it is possible to maintain the loading capacity of the packing box because the protruding portion does not protrude rearward even when the load receiving stand is raised while suppressing an increase in manufacturing cost.

本発明に係る荷受台昇降装置を備えた車両後方の斜視図である。It is a perspective view of the vehicle rear provided with the load receiving table raising / lowering apparatus which concerns on this invention. 本発明に係る荷受台昇降装置の動作順序を示す側面図である。It is a side view which shows the operation | movement order of the cargo receiving stand raising / lowering apparatus which concerns on this invention. 水平状態及び傾斜状態におけるリンクアームと荷受台の要部側面図である。It is a principal part side view of a link arm and a load receiving stand in a horizontal state and an inclined state. 起立状態におけるリンクアームと荷受台の要部側面図である。It is a principal part side view of the link arm in a standing state, and a goods receiving stand. リンクアームの要部後方図である。It is a principal part rear view of a link arm. 従来の起立格納型の荷受台昇降装置の動作状態を示す側面図である。It is a side view which shows the operation state of the conventional standing stowage type receiving stand raising / lowering apparatus. 後突防止機能を兼ねた荷受台昇降装置の側面図である。It is a side view of the load receiving table raising / lowering device which also served as the rear collision prevention function.

本発明に係る実施形態に関して、図面を用いて説明する。   Embodiments according to the present invention will be described with reference to the drawings.

図1は本実施形態に係る荷受台昇降装置100を搭載した車両の後方斜視図である。荷受台昇降装置100は、車両後方に設けられた平行リンク機構1に、荷受台3が連結された構成を有している。平行リンク機構1は車両のメインフレーム等からなる車体枠(不図示)に対して、車幅方向を長手方向とする支持部材10を介して取り付けられている。荷受台3と平行リンク機構1は、平行リンク機構1におけるリンクアーム15が連結体として機能して連結されている。荷受台2を使用しない走行状態では図示のとおり、荷箱4の後面に荷受台3が対向した起立状態となっている。荷箱4の下方には平行リンク機構1と干渉しないように3つに分割されたバンパ(後突防止手段)5(5C、5L、5R)が設けられている。   FIG. 1 is a rear perspective view of a vehicle equipped with a load receiving table lifting apparatus 100 according to the present embodiment. The load receiving table elevating device 100 has a configuration in which a load receiving table 3 is connected to a parallel link mechanism 1 provided at the rear of the vehicle. The parallel link mechanism 1 is attached to a vehicle body frame (not shown) formed of a main frame of the vehicle via a support member 10 whose longitudinal direction is the vehicle width direction. The load receiving platform 3 and the parallel link mechanism 1 are connected so that the link arm 15 in the parallel link mechanism 1 functions as a connecting body. In the traveling state in which the load receiving platform 2 is not used, as shown in the drawing, the load receiving platform 3 faces the rear surface of the packing box 4 and is in an upright state. Bumpers (rear collision prevention means) 5 (5C, 5L, 5R) divided into three so as not to interfere with the parallel link mechanism 1 are provided below the cargo box 4.

図2(a)に示すように、平行リンク機構1は、支持部材10のそれぞれ左右一対に、チルトリンク12、テンションアーム13、コンプレッションアーム14が配されてなる構成を有し、リンクアーム15を介して荷受台3の裏面に設けられた補強枠32(図1参照)に連結されている。
支持部材10は、車体枠の後端部に固設され、その左右両端には車幅方向に対向する支持ブラケット11が固設されている。
As shown in FIG. 2A, the parallel link mechanism 1 has a configuration in which a tilt link 12, a tension arm 13, and a compression arm 14 are arranged on each of a pair of left and right support members 10. It connects with the reinforcement frame 32 (refer FIG. 1) provided in the back surface of the cargo receiving stand 3 via.
The support member 10 is fixed to the rear end portion of the vehicle body frame, and support brackets 11 that are opposed to each other in the vehicle width direction are fixed to the left and right ends thereof.

各チルトリンク12は、それぞれ車体枠の後方に開口する断面コ字状に形成されて上下方向に延びており、その上端部がピン121を介して支持ブラケット11に回動自在に連結され、下端部が支持部材10に対して接離可能に回動可能、つまり車両前後方向に回動可能(揺動可能)に設けられている。この構成によって、各チルトリンク12は、その下端部が支持部材10に接触した状態で格納される格納位置と、支持部材10から車両後方に離間する離間位置とに相互に変換されるようになっている。   Each tilt link 12 is formed in a U-shaped cross section that opens to the rear of the vehicle body frame and extends in the vertical direction. The upper end of the tilt link 12 is rotatably connected to the support bracket 11 via a pin 121, and the lower end. The portion is provided so as to be turnable so as to be able to contact and separate with respect to the support member 10, that is, to be turnable (swingable) in the vehicle longitudinal direction. With this configuration, each tilt link 12 is converted into a storage position in which the lower end portion is in contact with the support member 10 and a separation position in which the tilt link 12 is separated from the support member 10 toward the rear of the vehicle. ing.

各テンションアーム13は、それぞれ車両前後方向に延びて、車両前側の一端(基端)がチルトリンク12の上端部側にピン131を介して回動自在に連結され、車両後ろ側の他端(先端)は、荷受台3にピン132を介して回動自在に連結されている。   Each tension arm 13 extends in the vehicle front-rear direction, one end (base end) on the vehicle front side is rotatably connected to the upper end portion side of the tilt link 12 via a pin 131, and the other end on the vehicle rear side ( The tip) is rotatably connected to the cargo receiver 3 via a pin 132.

各コンプレッションアーム14は、テンションアーム13の下方において、それぞれ車両前後方向に延びて配置されている。コンプレッションアーム14の車両前側の一端(基端)は、支持ブラケット11と支持ブラケット11に対し外側から対向するブラケット片17との間にピン141を介して回動自在に連結され、車両後ろ側の他端(先端)は、リンクアーム15の下端部にピン142を介して回動自在に連結されている。   Each compression arm 14 is disposed below the tension arm 13 so as to extend in the vehicle front-rear direction. One end (base end) of the compression arm 14 on the vehicle front side is rotatably connected via a pin 141 between the support bracket 11 and the bracket piece 17 facing the support bracket 11 from the outside. The other end (tip) is rotatably connected to the lower end of the link arm 15 via a pin 142.

各リンクアーム15は、その上端部が荷受台3の基端側に左右一対のテンションアーム13の先端とともにピン132によって軸支されて回動自在に連結されている。コンプレッションアーム14の先端は、リンクアーム15を介して荷受台3の基端側に連結されている。当該リンクアーム15において、コンプレッションアーム14のピン142による連結部分よりもさらに下方に突出した部分(突出部)15が設けられており、下端部にはピン15cを介してローラ部材15bが配されている。   Each link arm 15 has an upper end portion pivotally supported by a pin 132 together with the distal ends of a pair of left and right tension arms 13 on the base end side of the load receiving platform 3 and is rotatably connected. The distal end of the compression arm 14 is connected to the base end side of the load receiving platform 3 through the link arm 15. The link arm 15 is provided with a portion (protruding portion) 15 that protrudes further downward than the connecting portion of the compression arm 14 by the pin 142, and a roller member 15b is disposed at the lower end portion via a pin 15c. Yes.

各リフトシリンダ16は、油圧シリンダよりなり、テンションアーム13の下方でそれぞれ車両前後方向に延びて配置されている。リフトシリンダ16の車両前側の一端(基端)は、チルトリンク12の下端にピン161を介して回動自在に連結されており、車両後ろ側の他端(先端)は、テンションアーム13の略中間部にピン162を介して回動自在に連結されている。   Each lift cylinder 16 is composed of a hydraulic cylinder, and is arranged below the tension arm 13 so as to extend in the vehicle front-rear direction. One end (base end) of the lift cylinder 16 on the vehicle front side is rotatably connected to the lower end of the tilt link 12 via a pin 161, and the other end (tip end) on the vehicle rear side is an abbreviation of the tension arm 13. The intermediate portion is rotatably connected via a pin 162.

荷受台3は、荷物の載置台となる荷受台本体31と、側面視略三角形状で中空状の補強枠32とを含んだ構成となっている。補強枠32の内方には長手方向(荷受台の長さ方向)に沿って、油圧シリンダよりなるゲートシリンダ18が配されている。当該ゲートシリンダ18はその一端(図中下方側)がリンクアーム15の後方端部にピン181を介して連結されており、図示は省略するが他端は補強枠32の側面部に同様にピンを介して固設されている。当該ゲートシリンダ18は、荷受台3を起立状態と、荷台高さの水平状態との間で姿勢変更を行うために設けられているが、ゲートシリンダ18を設けずにこれらの姿勢変更を手動で行うようにしてもよい。補強枠32の基端部側にはリンクアーム15との連結するために、連結ブラケット32aが固着されており、荷受台3幅方向に沿って内側面には、荷受台3がリンクアーム15に対する回動停止時に用いられる回動ストッパ321が固設されている。
次に、荷受台昇降装置100の作動について説明する。
The load receiving platform 3 includes a load receiving platform main body 31 that serves as a load placing table and a hollow reinforcing frame 32 that is substantially triangular in a side view. A gate cylinder 18 made of a hydraulic cylinder is disposed inside the reinforcing frame 32 along the longitudinal direction (the length direction of the load receiving table). One end (the lower side in the figure) of the gate cylinder 18 is connected to the rear end portion of the link arm 15 via a pin 181. It is fixed through. The gate cylinder 18 is provided in order to change the posture between the standing state of the load receiving platform 3 and the horizontal state of the loading platform height, but these posture changes are manually performed without providing the gate cylinder 18. You may make it perform. A connection bracket 32 a is fixed to the base end side of the reinforcing frame 32 so as to be connected to the link arm 15. A rotation stopper 321 used when rotation is stopped is fixed.
Next, the operation of the load receiving table lifting device 100 will be described.

荷受台3が起立した状態(図2(a))において、ゲートシリンダ18を伸長させることで荷受台3は時計回りに回動して、補強枠32の内側に設けられた回動ストッパ321とリンクアーム15に設けられた緩衝部材151とが当接することで水平状態となる(図2(b))。このとき、荷受台3は荷箱4内の床面41の高さと略一致し、水平状態での最上昇位置となっている。   In a state where the load receiving stand 3 stands (FIG. 2A), the load receiving stand 3 rotates clockwise by extending the gate cylinder 18, and a rotation stopper 321 provided inside the reinforcing frame 32. The buffer member 151 provided on the link arm 15 comes into contact with the buffer arm 151 to be in a horizontal state (FIG. 2B). At this time, the load receiving platform 3 substantially coincides with the height of the floor surface 41 in the load box 4 and is in the highest position in the horizontal state.

荷受台3が最上昇位置のときに、リフトシリンダ16を収縮させることで、リフトシリンダ16、テンションアーム13及びコンプレッションアーム14がそれぞれ下方に回動され、荷受台3は水平状態のまま下降してリンクアーム15のローラ部材15bが接地する最下降状態となる(図2(c))。荷受台3が最下降状態となるまでの間、リフトシリンダ16に荷受台3等の荷重が及んでいるので、チルトリンク12には車両後方に離間する向きの力が作用しておらず格納位置で保持されている。   By retracting the lift cylinder 16 when the load receiving platform 3 is at the highest position, the lift cylinder 16, the tension arm 13 and the compression arm 14 are respectively rotated downward, and the load receiving platform 3 is lowered in a horizontal state. The roller member 15b of the link arm 15 is in the lowest lowered state in which it contacts the ground (FIG. 2 (c)). Since the load of the load receiving table 3 and the like is applied to the lift cylinder 16 until the load receiving table 3 is in the lowest lowered state, the tilt link 12 is not subjected to a force in a direction away from the rear of the vehicle, and is stored in the storage position. Is held by.

荷受台3が最下降状態となった後には、リフトシリンダ16の収縮に伴って、チルトリンク12には支持部材10から離間する車両後方への力が作用する。これにより、テンションアーム13が後方に移動し、コンプレッションアーム14先端のピン142を支点にして荷受台3の車両後方側端部(先端部)311が下方に傾動して傾斜状態に自動的に姿勢変更される(図2(d))。荷受台3の水平状態から傾斜状態への姿勢変更は、荷受台3が最下降状態となった際の荷受台3の荷重によって行われる。つまり、最下降状態となった後、リフトシリンダ16を荷受台3の最下降状態からさらに収縮させつつ、チルトリンク12を車両後方に揺動させてテンションアーム13先端のピン132を車両後方に移動させることによって、荷受台3先端が下方に傾動する。   After the load receiving platform 3 is in the lowest lowered state, as the lift cylinder 16 contracts, a force toward the rear of the vehicle that is separated from the support member 10 acts on the tilt link 12. As a result, the tension arm 13 moves rearward, and the vehicle rear side end portion (tip portion) 311 of the load receiving platform 3 tilts downward with the pin 142 at the tip of the compression arm 14 as a fulcrum, so that the posture is automatically set to the inclined state. It is changed (FIG. 2 (d)). The posture change of the load receiving platform 3 from the horizontal state to the inclined state is performed by the load of the load receiving platform 3 when the load receiving platform 3 is in the lowest lowered state. That is, after reaching the lowest position, the tilt cylinder 12 is swung to the rear of the vehicle and the pin 132 at the tip of the tension arm 13 is moved to the rear of the vehicle while further retracting the lift cylinder 16 from the lowest position of the load receiving platform 3. By doing so, the tip of the load receiving platform 3 tilts downward.

本実施形態に係るリンクアーム15に関しては図3(a)に示すとおり、水平状態の荷受台3の連結ブラケット32aの最下端部から突出部15aが鉛直方向に沿って突出高さLHだけ突出している。このように突出部15aを設けることで、図3(b)及び図3(c)に示すように、傾斜させて接地させる傾斜状態に姿勢変更が行われる際にローラ部材15bと荷受台3の先端部311とを結ぶ仮想線Sより上側に荷受台3の最下端部(図中、二点鎖線)が位置することになるため、先端部311を接地させることができる。当該最下端部は仮想線Sより上側としているが、仮想線と一致するように突出部15aの突出高さを設定しても良い。また、仮想線Sに関しては、ローラ部材15bと荷受台3の先端部311とを結ぶものとしているが、突出部15aの突出先端(下端部)と荷受台3の先端部311とを結ぶものとしても構わない。なお、補強枠32や荷受台3裏面に接地時の衝撃緩和等のための緩衝部材が設けられることで、荷受台3の傾斜状態における最下端部の位置が変更される場合には、適宜、その最下端部の位置に対応した突出高さLHに設定する。   With respect to the link arm 15 according to the present embodiment, as shown in FIG. 3A, the protruding portion 15a protrudes from the lowest end portion of the connection bracket 32a of the load receiving platform 3 in the horizontal state by a protruding height LH along the vertical direction. Yes. By providing the projecting portion 15a in this way, as shown in FIGS. 3B and 3C, when the posture is changed to the tilted state in which the roller member 15b and the load receiving platform 3 are tilted to be grounded, Since the lowermost end portion (two-dot chain line in the figure) of the load receiving platform 3 is positioned above the virtual line S connecting the tip portion 311, the tip portion 311 can be grounded. Although the lowermost end portion is above the virtual line S, the protruding height of the protruding portion 15a may be set so as to coincide with the virtual line. As for the imaginary line S, the roller member 15b and the tip 311 of the load receiving table 3 are connected, but the protruding tip (lower end) of the protruding portion 15a and the tip 311 of the load receiving table 3 are connected. It doesn't matter. In addition, when the position of the lowermost end portion in the inclined state of the load receiving platform 3 is changed by providing a buffer member for shock reduction or the like at the time of ground contact on the back surface of the reinforcing frame 32 or the load receiving platform 3, The protrusion height LH corresponding to the position of the lowermost end is set.

荷受台3が起立状態なる際でも、図4(a)に示すように、水平状態のときとほぼ同じ姿勢を維持したまま、荷受台3の最後端部32bより車両前方側に位置した状態となっている。つまり、水平状態及び起立状態のいずれにおいても突出部15aは下方に突出したまま連結ブラケット32aの後端部より前方に位置し、この連結ブラケット32aの後端部が車両の最後端部となる。突出部15aが車両後方に突出しないことで、荷箱4の下方に設けるバンパ5(図1参照)は、連結ブラケット32aの後端部を基準として設置でき、バンパを車両後方に引き出すための構成とする必要がなく製造コストの上昇を防止できる。また、突出部15aが車両後方に突出しないことで荷箱積載容量の低下も防止できる。   As shown in FIG. 4 (a), even when the cargo cradle 3 is in a standing state, the vehicle is positioned on the vehicle front side from the rearmost end portion 32b of the cargo cradle 3 while maintaining substantially the same posture as in the horizontal state. It has become. That is, in both the horizontal state and the standing state, the protruding portion 15a is positioned forward from the rear end portion of the connection bracket 32a while protruding downward, and the rear end portion of the connection bracket 32a is the rear end portion of the vehicle. The bumper 5 (see FIG. 1) provided below the cargo box 4 can be installed on the basis of the rear end portion of the connection bracket 32a because the protruding portion 15a does not protrude rearward of the vehicle, and is configured to pull out the bumper rearward of the vehicle. Therefore, an increase in manufacturing cost can be prevented. Further, since the protruding portion 15a does not protrude rearward of the vehicle, it is possible to prevent a reduction in the cargo box loading capacity.

突出部15aの突出方向に関しては、図4(a)の拡大図に示すように、車両後方側に傾斜した方向(矢印T1方向)となっている。この突出方向に関しては、荷受台が水平状態の際にもリンアームはほぼ同じ姿勢であるため、略同一方向となる。   As shown in the enlarged view of FIG. 4A, the protruding direction of the protruding portion 15a is a direction inclined to the vehicle rear side (arrow T1 direction). With respect to this protruding direction, the phosphorus arms are substantially in the same posture even when the load receiving platform is in a horizontal state, and therefore are substantially in the same direction.

具体的には、テンションアーム13がリンクアーム15に軸支されている部分(ピン132の位置)と、コンプレッションアーム14がリンクアーム15に軸支されている部分(ピン142の位置)とを結ぶ仮想線N1から斜め後方(矢印T1方向)を向いている。仮想線N1は荷受台3が接地される地面が水平な場合には略鉛直線となり、地面が傾斜している場合には地面に略垂直な線となる。   Specifically, a portion where the tension arm 13 is pivotally supported by the link arm 15 (position of the pin 132) and a portion where the compression arm 14 is pivotally supported by the link arm 15 (position of the pin 142) are connected. It faces diagonally backward (arrow T1 direction) from the imaginary line N1. The imaginary line N1 is a substantially vertical line when the ground on which the load receiving platform 3 is grounded is horizontal, and is a line substantially perpendicular to the ground when the ground is inclined.

突出部15aの突出先端に配されたローラ部材15bは、ピン142とは異なる軸(ピン15c)に軸支されており、ほぼ図示した状態のまま荷受台3が最下降状態となり、ローラ部材15bが接地した際に安全な傾斜状態への移行(図2(c)から図2(d)への移行)が行われる。例えば、仮想線N1上、または仮想線N1よりも前方にローラ部材15bが配された状態で接地する場合と比較して、リフトシリンダ16に係る荷重の大きさが分散されるため、リフトシリンダ16の収縮速度を低減できる。よって、水平状態から傾斜状態に移る際に荷物の荷崩れ等の発生を防止し、安定した荷受台3の昇降作動を実現できる。また、リフトシリンダ16等の損傷も防止できる。   The roller member 15b disposed at the projecting tip of the projecting portion 15a is pivotally supported by a shaft (pin 15c) different from the pin 142, and the load receiving table 3 is in the lowest lowered state in the substantially illustrated state, so that the roller member 15b Transition to a safe inclined state (transition from FIG. 2 (c) to FIG. 2 (d)) is performed when the terminal is grounded. For example, since the magnitude of the load applied to the lift cylinder 16 is dispersed compared to the case where the roller member 15b is disposed on the virtual line N1 or in front of the virtual line N1, the lift cylinder 16 is dispersed. The contraction speed of can be reduced. Therefore, it is possible to prevent the cargo from collapsing when shifting from the horizontal state to the inclined state, and to realize a stable lifting operation of the load receiving platform 3. Further, damage to the lift cylinder 16 and the like can be prevented.

また、仮想線N1よりも後方にローラ部材15bが配されている場合には、荷受台3が最下降状態から傾斜状態への移行の際に、図4(b)で示すように、突出部15aも移動する(二点鎖線部分から実線部分への移動)。この場合、荷受台3の先端部311が接地した際(図2(d)参照)に突出方向T1が略鉛直方向となればピン142の位置も上昇(高さH1)して荷受台3の傾斜角度を大きくすることができる。よって、荷受台3の先端部311をさらに接地させ易くなる。   Further, when the roller member 15b is arranged behind the imaginary line N1, when the load receiving platform 3 shifts from the lowest lowered state to the inclined state, as shown in FIG. 15a also moves (movement from the two-dot chain line portion to the solid line portion). In this case, when the front end 311 of the load receiving platform 3 is grounded (see FIG. 2D), if the projecting direction T1 becomes a substantially vertical direction, the position of the pin 142 also rises (height H1) and the load receiving platform 3 The inclination angle can be increased. Therefore, it becomes easier to ground the front end portion 311 of the load receiving platform 3.

なお、リンクアーム15は、図5(a)の要部後方図に示すとおり、2枚の平板プレートが対向配置されてなり、突出部15aは、ピン142が配されている部分からさらに延びて一体的に形成され、ローラ部材15bはその突出部15aの間に配された構成となっているが、図5(b)のようにピン142が配されているメインリンクアーム15Mに、ローラ部材15bが配されているサブリンクアーム15Sが別部材として溶接やボルト締め等で取り付けられた構成としても構わない。また、これらの取り付け部分にアジャスタ機構を利用して、荷受台昇降装置100が架装される車両の種類に応じて突出高さLHを適宜調整可能な構成とすることも可能である。
(その他の事項)
As shown in the rear view of the main part of FIG. 5A, the link arm 15 is formed by opposing two flat plates, and the protrusion 15a further extends from the portion where the pin 142 is disposed. The roller member 15b is integrally formed, and is arranged between the projecting portions 15a. The roller member 15b is attached to the main link arm 15M having the pin 142 as shown in FIG. 5B. The sub link arm 15S on which the 15b is arranged may be attached as a separate member by welding, bolting or the like. Moreover, it is also possible to employ a configuration in which the protrusion height LH can be appropriately adjusted according to the type of vehicle on which the load receiving table lifting apparatus 100 is mounted, using an adjuster mechanism for these attachment portions.
(Other matters)

本実施形態では、図1のように、荷受台3が起立状態で荷箱後面の途中部までの高さとなる大きさであるが、荷受台3で荷箱後面を全て覆う構成とすることもできる。このとき、突出部15aの突出高さを適宜設定することで、荷受台3の先端部311を傾斜状態のときに接地させることができる。また、補強枠32も側面視略三角形状としたが、荷受台3の長尺化に対応するために他の形状としても突出部15aの突出高さを適宜設定することで、荷受台3が傾斜状態のときに先端部311を接地させることができるとともに、荷受台3が起立状態でも車両後方に突出することもない。   In the present embodiment, as shown in FIG. 1, the load receiving platform 3 has a height up to a middle portion of the rear surface of the cargo box in the standing state, but the load receiving platform 3 may cover the entire rear surface of the cargo box. it can. At this time, by appropriately setting the protruding height of the protruding portion 15a, the tip end portion 311 of the load receiving platform 3 can be grounded when in the inclined state. Further, although the reinforcing frame 32 is also substantially triangular when viewed from the side, in order to cope with the increase in the length of the load receiving table 3, the load receiving table 3 can be formed by appropriately setting the protruding height of the protruding portion 15 a as another shape. The tip portion 311 can be grounded in the inclined state, and it does not protrude rearward of the vehicle even when the load receiving stand 3 is in the standing state.

また、荷受台3は荷箱後面で起立する形態としたが、最下降状態から傾斜状態に姿勢変更するものであれば、荷箱下方に折り畳んで格納する形態や他の形態も適用可能である。   In addition, the load receiving platform 3 is configured to stand on the rear surface of the packing box. However, as long as the posture is changed from the lowest position to the inclined state, a mode in which the packing holder 3 is folded and stored below the packing box and other forms are also applicable. .

突出部15aの先端(下端部)にはローラ部材15bが配されているが、ローラ部材15b以外の部材、例えば樹脂等からなるパッド部材(摺接部材)を代わりに用いても構わないし、ローラ部材15b等を配さずに、突出部15aが直接接地する構成としても構わない。   A roller member 15b is disposed at the tip (lower end) of the protruding portion 15a. However, a member other than the roller member 15b, for example, a pad member (sliding contact member) made of resin or the like may be used instead. The projecting portion 15a may be directly grounded without providing the member 15b or the like.

本発明によれば、荷受台を水平状態から傾斜して接地させる荷受台昇降装置に対して有用である。   According to the present invention, it is useful for a load receiving table lifting device for tilting a load receiving table from a horizontal state and grounding it.

1 平行リンク機構
3 荷受台
4 荷箱
5 バンパ(後突防止手段)
11 支持ブラケット
12 チルトリンク
13 テンションアーム
14 コンプレッションアーム
15 リンクアーム
15a 突出部
15b ローラ部材
16 リフトシリンダ
31 載置台
32 補強枠
32a 連結ブラケット
100 荷受台昇降装置
311 先端部
DESCRIPTION OF SYMBOLS 1 Parallel link mechanism 3 Cargo stand 4 Cargo box 5 Bumper (rear collision prevention means)
11 Support bracket 12 Tilt link 13 Tension arm 14 Compression arm 15 Link arm 15a Protruding portion 15b Roller member 16 Lift cylinder 31 Mounting base 32 Reinforcement frame 32a Connecting bracket 100 Loading platform lifting device 311 Tip

Claims (8)

車両後方に設けられて上下の各アームの先端が連結体で連結されてなる平行リンク機構と、前記連結体を介して前記平行リンク機構に連結されるとともに地面と荷台との間を昇降する荷受台とを有し、前記荷受台が水平状態とその水平状態から傾斜した接地状態との間で回動する荷受台昇降装置であって、
前記荷受台は、前記連結体において前記上アームが連結される上アーム連結部を中心として、前記連結体に対して回動可能に構成されており、
前記連結体には、当該上アーム連結部の下方に下アームが連結される下アーム連結部と、当該下アーム連結部よりも下方に突出するとともに地面に接地する突出部とが設けられている
ことを特徴とする荷受台昇降装置。
A parallel link mechanism that is provided at the rear of the vehicle and is connected to the parallel link mechanism via the connecting body and that moves up and down between the ground and the loading platform. A load receiving table elevating device that rotates between a horizontal state and a grounded state inclined from the horizontal state,
The cargo cradle is configured to be rotatable with respect to the connecting body around an upper arm connecting portion to which the upper arm is connected in the connecting body.
The connecting body is provided with a lower arm connecting portion to which a lower arm is connected below the upper arm connecting portion, and a protruding portion that protrudes below the lower arm connecting portion and contacts the ground. A cargo receiving platform elevating device.
前記接地状態の荷受台において、
前記荷受台の最下端部は、当該荷受台の先端部と、前記突出部の突出先端とを結ぶ仮想線上または仮想線よりも上側に設けられている
ことを特徴とする請求項1に記載の荷受台昇降装置。
In the grounded cradle,
The lowest end part of the said load receiving stand is provided on the virtual line which connects the front-end | tip part of the said load receiving base, and the protrusion front-end | tip of the said protrusion part, or an upper side than a virtual line. Loading platform lifting device.
前記荷受台は、前記荷台の高さ位置で水平状態となるとともに、さらに車両前方に回動して起立状態となる
ことを特徴とする請求項1または2に記載の荷受台昇降装置。
The load receiving platform elevating device according to claim 1, wherein the load receiving platform is in a horizontal state at a height position of the loading platform, and is further rotated to the front side of the vehicle to be in an upright state.
前記荷受台が起立状態の際、
前記連結体は、前記突出部が下方向に突出した状態を維持するように配されている
ことを特徴とする請求項3に記載の荷受台昇降装置。
When the consignment stand is standing,
The said connection body is distribute | arranged so that the said protrusion part may protrude in the downward direction. The load receiving platform raising / lowering apparatus of Claim 3 characterized by the above-mentioned.
前記荷受台は、前記連結体の後方端部に対して、下端部が接離可能に連結されている
ことを特徴とする請求項4に記載の荷受台昇降装置。
The load receiving platform lifting / lowering device according to claim 4, wherein the load receiving platform is connected to a rear end portion of the connecting body so that a lower end portion thereof can contact and separate.
前記突出部にはローラ部材が軸支されており、
前記連結体において、前記ローラ部材の軸支部は前記下アーム連結部に対して離間配置されている
ことを特徴とする請求項1から5のいずれかに記載の荷受台昇降装置。
A roller member is pivotally supported on the protrusion,
In the said coupling body, the axial support part of the said roller member is spaced apart with respect to the said lower arm coupling part. The cargo receiving stand raising / lowering apparatus in any one of Claim 1 to 5 characterized by the above-mentioned.
前記ローラ部材の軸支部は、前記平行リンク機構の軸支部よりも車両後方かつ下方の位置に設けられている
ことを特徴とする請求項6に記載の荷受台昇降装置。
The load receiving platform elevating device according to claim 6, wherein the shaft support portion of the roller member is provided at a position behind and below the vehicle with respect to the shaft support portion of the parallel link mechanism.
請求項1から7のいずれかに記載の荷受台昇降装置が搭載された車両であって、
前記荷台の下方に後突防止手段が設けられている
ことを特徴とする車両。
A vehicle on which the cargo receiving platform lifting apparatus according to any one of claims 1 to 7 is mounted,
A vehicle for preventing a rear collision is provided below the loading platform.
JP2010022039A 2010-02-03 2010-02-03 Loading platform lifting device Active JP5777285B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101495261B1 (en) 2013-10-24 2015-02-25 오한복 Vertical type lift gate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524434U (en) * 1991-09-13 1993-03-30 三菱自動車工業株式会社 Tailgate lifter with rear bumper
JP2003112558A (en) * 2001-10-05 2003-04-15 Kyokuto Kaihatsu Kogyo Co Ltd Loading deck elevating device for cargo vehicle
JP2006142849A (en) * 2004-11-16 2006-06-08 Shin Meiwa Ind Co Ltd Loading platform for vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0524434U (en) * 1991-09-13 1993-03-30 三菱自動車工業株式会社 Tailgate lifter with rear bumper
JP2003112558A (en) * 2001-10-05 2003-04-15 Kyokuto Kaihatsu Kogyo Co Ltd Loading deck elevating device for cargo vehicle
JP2006142849A (en) * 2004-11-16 2006-06-08 Shin Meiwa Ind Co Ltd Loading platform for vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101495261B1 (en) 2013-10-24 2015-02-25 오한복 Vertical type lift gate

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