JP2007176623A - Lifter - Google Patents

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JP2007176623A
JP2007176623A JP2005374933A JP2005374933A JP2007176623A JP 2007176623 A JP2007176623 A JP 2007176623A JP 2005374933 A JP2005374933 A JP 2005374933A JP 2005374933 A JP2005374933 A JP 2005374933A JP 2007176623 A JP2007176623 A JP 2007176623A
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tension bar
cam
lifter
arm
base
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JP2005374933A
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JP4916716B2 (en
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Kunihiko Nagasaka
邦彦 長坂
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NIKKI ENGINEERING KK
NIPPON KIKI KOGYO KK
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NIKKI ENGINEERING KK
NIPPON KIKI KOGYO KK
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Priority to JP2005374933A priority Critical patent/JP4916716B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lifter lowering a lifting base to aminimum as much as possible. <P>SOLUTION: A tension bar 28 is provided with two plate-like cam roller mounting parts 33 rotatably mounted with cam rollers 26 and 27; and a plate-like connection part 34 for connecting the two cam roller mounting parts 33, 33 to each other, and has a U shape as a whole. A through hole 35 is provided on a central portion of the connection part 34. An end of a rod 30 formed with a male screw part is inserted to the through hole 35 and is penetrated through the connection part 34. A washer 37 is inserted to the end of the rod 30 and a nut 36 is screwed, thereby, the end of the rod 30 is connected to the connection part 34. The tension bar 28 can move until the connection part 34 passes over an upper roller 19 and is positioned at an opposite side to an inner arm 15 relative to the upper roller 19 so as not to be superposed on the inner arm 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明はリフターに係り、特に、基台と、昇降台と、昇降台を基台に対して平行を保ったまま昇降させる昇降装置とを備えたリフターに関する。   The present invention relates to a lifter, and more particularly, to a lifter including a base, a lift, and a lifting device that lifts and lowers the lift while keeping the lift parallel to the base.

各家庭や集会所等の階段に使用するためのリフターが、例えば、特許文献１等に記載されている。このようなリフターの構成を、図６〜８に示す。リフター５０は、基台５１と、昇降台５２と、昇降台５２を基台５１に対して平行を保ったまま昇降させる昇降装置７０とを備えている。昇降装置７０は２つの案内手段５３を備え、案内手段５３は、内アーム５４及び外アーム５５がそれぞれの中央部分で交差して１つのピン６６によって回動可能に支持されている。２つの内アーム５４，５４はそれぞれ、一端が基台５１にピン５６によって回動可能に取り付けられると共に、他端に昇降台５２の下面を転動する上コロ５７が取り付けられている。２つの外アーム５５，５５はそれぞれ、２つの内アーム５４，５４の外側に、一端が昇降台５２にピン５８によって回動可能に取り付けられると共に、他端に基台５１の上面を転動する下コロ５９が取り付けられている。また、昇降装置７０は、テンションバー６５と、テンションバー６５を移動させる油圧シリンダー６０とをさらに備えている。油圧シリンダー６０によりテンションバー６５が移動すると、テンションバー６５の両端に取り付けられたカムコロ６３及び６４が、内アーム５４及び外アーム５５のそれぞれに設けられたカム６１及び６２に接するように転動するようになっている。   A lifter for use in the staircase of each home or meeting place is described in Patent Document 1, for example. The structure of such a lifter is shown in FIGS. The lifter 50 includes a base 51, a lift 52, and a lifting device 70 that lifts and lowers the lift 52 while maintaining parallel to the base 51. The elevating device 70 includes two guide means 53, and the guide means 53 is supported by a single pin 66 so that the inner arm 54 and the outer arm 55 intersect with each other at a central portion. One end of each of the two inner arms 54 and 54 is rotatably attached to the base 51 by a pin 56, and an upper roller 57 that rolls on the lower surface of the lifting platform 52 is attached to the other end. Each of the two outer arms 55 and 55 is attached to the outside of the two inner arms 54 and 54 so that one end of the two outer arms 55 and 55 can be rotated by a pin 58 and the other end rolls on the upper surface of the base 51. A lower roller 59 is attached. The lifting device 70 further includes a tension bar 65 and a hydraulic cylinder 60 that moves the tension bar 65. When the tension bar 65 is moved by the hydraulic cylinder 60, the cam rollers 63 and 64 attached to both ends of the tension bar 65 roll so as to come into contact with the cams 61 and 62 provided on the inner arm 54 and the outer arm 55, respectively. It is like that.

昇降台５２が最高高さにあるとき（図６）、油圧シリンダー６０がテンションバー６５を上コロ５７及び下コロ５９の方向に移動することにより、カムコロ６３及び６４のそれぞれがカム６１及び６２に接するように上コロ５７及び下コロ５９の方向に移動する。すると、案内手段５３が、図６に示されるようなアルファベットの「Ｘ」字形状の状態から、そのアルファベットの「Ｘ」が次第につぶれるように変形して、案内手段５３の高さが低下することにより、昇降台５２は基台５１に対して平行を保ったまま下降していく。昇降台５２が下降していくと、図７及び８のＡで示される部分においてテンションバー６５は２つの内アーム５４，５４に重なり、この状態よりも昇降台５２の位置が低下しなくなる。すなわち、昇降台５２の最低高さを、図８の状態における高さｈよりも低くすることはできない。したがって、リフター５０を設置する際に、設置場所周辺との間で段差が生じないようにするためには、設置場所に深さｈのくぼみを設けなくてはならない。   When the lift 52 is at the maximum height (FIG. 6), the hydraulic cylinder 60 moves the tension bar 65 in the direction of the upper roller 57 and the lower roller 59, so that the cam rollers 63 and 64 are moved to the cams 61 and 62, respectively. It moves in the direction of the upper roller 57 and the lower roller 59 so as to contact each other. Then, the guide means 53 is deformed so that the alphabet “X” gradually collapses from the “X” shape of the alphabet as shown in FIG. 6, and the height of the guide means 53 decreases. As a result, the lifting / lowering base 52 descends while maintaining parallel to the base 51. When the lifting platform 52 is lowered, the tension bar 65 overlaps the two inner arms 54 and 54 in the portion indicated by A in FIGS. 7 and 8, and the position of the lifting platform 52 does not lower than this state. That is, the minimum height of the lifting platform 52 cannot be made lower than the height h in the state of FIG. Therefore, when the lifter 50 is installed, a recess having a depth h must be provided in the installation site so that no step is generated between the lifter 50 and the periphery of the installation site.

特開２００３−２０１９６号公報JP 2003-20196 A

しかしながら、リフター５０の設置場所に深さｈのくぼみを設けることができない場合には、リフター５０と設置場所周辺との間で段差が生じてしまうといった問題点があった。   However, there is a problem that a step is generated between the lifter 50 and the vicinity of the installation location when the recess having the depth h cannot be provided at the installation location of the lifter 50.

この発明はこのような問題点を解決するためになされたもので、昇降台の最低高さをできる限り低くしたリフターを提供することを目的とする。   The present invention has been made to solve such problems, and an object of the present invention is to provide a lifter in which the minimum height of the lifting platform is made as low as possible.

この発明に係るリフターは、基台と、昇降台と、前記昇降台を前記基台に対して平行を保ったまま昇降させる昇降装置とを備えたリフターであって、前記昇降装置は、一端が前記基台に回動可能に取付けられると共に他端に前記昇降台の下面を転動する上コロが取付けられた内アーム、及び一端が前記昇降台に回動可能に取付けられると共に他端に前記基台の上面を転動する下コロが取付けられた外アームが交差して回転可能に支持された２つの案内手段と、前記内アーム及び前記外アームに設けられたカムと、前記カムに接しながら転動するカムコロを備えたテンションバーと、前記テンションバーを移動させる移動機構とを備え、前記テンションバーは、前記カムコロが回転可能に取り付けられると共に前記内アームと前記外アームとの間を移動する２つのカムコロ取付部と、前記２つのカムコロ取付部を連結する連結部とを備え、前記カムコロが前記カムに接しながら転動することによって前記昇降台が下降したときに、前記連結部が前記内アームと重ならないように前記上コロに対して前記内アームとは反対側に位置するまで、前記テンションバーが移動する。   The lifter according to the present invention is a lifter comprising a base, a lift, and a lift that lifts the lift while keeping the lift parallel to the base. An inner arm that is rotatably attached to the base and has an upper roller attached to the other end that rolls on the lower surface of the elevator, and one end rotatably attached to the elevator and the other end Two guide means that are rotatably supported by crossing an outer arm to which a lower roller that rolls on the upper surface of the base crosses, a cam provided on the inner arm and the outer arm, and a contact with the cam A tension bar provided with a cam roller that rolls while moving, and a moving mechanism that moves the tension bar. The tension bar is attached to the cam roller in a rotatable manner, and is connected to the inner arm and the outer arm. The two cam roller mounting portions that move and the connecting portion that connects the two cam roller mounting portions, and the connecting portion when the cam base rolls down while the cam rollers roll while contacting the cam. The tension bar moves until the upper bar is positioned on the opposite side of the inner arm so as not to overlap the inner arm.

この発明によれば、テンションバーは、カムコロが回転可能に取り付けられると共に内アームと外アームとの間を移動する２つのカムコロ取付部と、２つのカムコロ取付部を連結する連結部とを備えることにより、カムコロがカムに接しながら転動することによって昇降台が下降したときに、連結部が内アームと重ならないように上コロに対して内アームとは反対側に位置するまで、テンションバーが移動するので、内アームがテンションバーの影響を受けずに回動するようになる。これにより、昇降台の最低高さをできる限り低くすることができる。   According to the present invention, the tension bar includes two cam roller attachment portions that are rotatably attached to the cam rollers and move between the inner arm and the outer arm, and a connecting portion that connects the two cam roller attachment portions. Therefore, when the lifting platform is lowered by rolling while the cam roller is in contact with the cam, the tension bar is moved until the connecting portion is positioned on the side opposite to the inner arm so as not to overlap the inner arm. Since it moves, the inner arm turns without being affected by the tension bar. Thereby, the minimum height of the lifting platform can be made as low as possible.

以下、この発明の実施の形態を添付図面に基づいて説明する。
図１には、この実施の形態に係るリフターを玄関の土間部分に設けたときの断面図を示している。図１（ａ）は、昇降台１３の高さが最低の状態を表し、図１（ｂ）は昇降台１３の高さが最高の状態を表している。
図１（ａ）に示されるように、昇降台１３の高さが最低の状態のとき、玄関ドア２の外側の戸外面３とリフター１の昇降台１３とが面一となり、段差がない状態となっている。このような段差のない状態を実現するためには、玄関の土間部分５を、戸外面３よりも昇降台１３の高さと同じ深さだけくぼませる必要がある。後述するリフター１の構造により、昇降台１３の最低高さができる限り低くなるので、土間部分５のくぼみの深さができる限り小さくなる。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a cross-sectional view when the lifter according to this embodiment is provided in the dirt portion of the entrance. 1A shows a state where the height of the lifting platform 13 is the lowest, and FIG. 1B shows a state where the height of the lifting platform 13 is the highest.
As shown in FIG. 1 (a), when the height of the lifting / lowering base 13 is at its lowest state, the door outer surface 3 outside the entrance door 2 and the lifting / lowering base 13 of the lifter 1 are flush with each other and there is no step. It has become. In order to realize such a step-free state, it is necessary to dent the dirt portion 5 of the entrance by the same depth as the height of the lifting platform 13 rather than the door outer surface 3. Due to the structure of the lifter 1 which will be described later, the minimum height of the lifting platform 13 is as low as possible, so that the depth of the recess of the inter-soil portion 5 is as small as possible.

図１（ａ）の状態では、昇降台１３と戸外面３との間には段差がないものの、昇降台１３とあがりかまち４との間には段差が存在する。しかし、図１（ｂ）に示されるように、昇降台１３の高さを最高の状態にすると、昇降台１３とあがりかまち４とが面一となり、段差が解消される。
ここで、例えば、車椅子が戸外面３からあがりかまち４に移動する場合を考える。昇降台１３が最低高さであれば（図１（ａ））、戸外面３と昇降台１３との間に段差がないので、車椅子が戸外面３から玄関ドア２を通って昇降台１３に移動する際に、車椅子は段差の影響を受けることなく移動することができる。車椅子が乗った状態で昇降台１３が上昇して昇降台１３の高さが最高になると（図１（ｂ））、昇降台１３とあがりかまち４との間に段差がないので、車椅子が昇降台１３からあがりかまち４に移動する際に、車椅子は段差の影響を受けることなく移動することができる。したがって、車椅子は、戸外面３からあがりかまち４への移動が容易になる。 In the state of FIG. 1A, there is no step between the lift 13 and the door outer surface 3, but there is a step between the lift 13 and the riser town 4. However, as shown in FIG. 1B, when the height of the lifting / lowering base 13 is maximized, the lifting / lowering base 13 and the riser town 4 are flush with each other, and the level difference is eliminated.
Here, for example, a case where the wheelchair moves from the door outer surface 3 to the uptown 4 is considered. If the elevator 13 is at the minimum height (FIG. 1A), there is no step between the door outer surface 3 and the elevator 13 so that the wheelchair passes from the door outer surface 3 through the entrance door 2 to the elevator 13. When moving, the wheelchair can move without being affected by steps. When the elevator 13 is raised and the height of the elevator 13 is maximized while the wheelchair is on (FIG. 1 (b)), there is no step between the elevator 13 and the riser town 4, so the wheelchair is raised and lowered. The wheelchair can move without being affected by a step when moving from the platform 13 to the uptown 4. Therefore, the wheelchair can be easily moved from the door outer surface 3 to the lift town 4.

次に、リフター１の構造について説明する。
図２及び３に示されるように、リフター１は、地面に設置される基台１２と、基台１２に対して平行な昇降台１３と、昇降台１３を基台１２に対して平行を保ったまま昇降させる昇降装置１０とを備えている。昇降装置１０は、２つの案内手段１４，１４を備えている。案内手段１４は、内アーム１５及び外アーム１６がそれぞれの中央部分で接しないように交差して１つのピン１７によって互いに回動可能に支持されている。２つの内アーム１５，１５はそれぞれ、一端が基台１２にピン１８によって回動可能に取り付けられると共に、他端に昇降台１３の下面を転動する上コロ１９がピン２０によって回転可能に取り付けられている。２つの外アーム１６，１６はそれぞれ、２つの内アーム１５，１５の外側に、一端が昇降台１３にピン２１によって回動可能に取り付けられると共に、他端に基台１２の上面を転動する下コロ２２がピン２３によって回転可能に取り付けられている。内アーム１５及び外アーム１６のそれぞれには、互いが対向し合う面にカム２４及び２５が設けられている。カム２４は下方に向かって凸状に湾曲した湾曲面２４ａを有し、カム２５は上方に向かって凸状に湾曲した湾曲面２５ａを有している。ここで、カム２４及び２５はくさび形カムを構成する。 Next, the structure of the lifter 1 will be described.
As shown in FIGS. 2 and 3, the lifter 1 includes a base 12 installed on the ground, a lift 13 parallel to the base 12, and the lift 13 is kept parallel to the base 12. And a lifting device 10 that lifts and lowers while standing. The lifting device 10 includes two guide means 14. The guide means 14 is supported by a single pin 17 so that the inner arm 15 and the outer arm 16 do not come into contact with each other at their central portions so as to be rotatable with respect to each other. One end of each of the two inner arms 15 and 15 is rotatably attached to the base 12 by a pin 18, and an upper roller 19 that rolls on the lower surface of the elevator 13 is rotatably attached to the other end by a pin 20. It has been. The two outer arms 16 and 16 are respectively attached to the outside of the two inner arms 15 and 15 so that one end of the two outer arms 16 and 16 can be rotated by pins 21 and the other end rolls on the upper surface of the base 12. A lower roller 22 is rotatably attached by a pin 23. Each of the inner arm 15 and the outer arm 16 is provided with cams 24 and 25 on the surfaces facing each other. The cam 24 has a curved surface 24a curved in a convex shape downward, and the cam 25 has a curved surface 25a curved in a convex shape upward. Here, the cams 24 and 25 constitute a wedge cam.

また、昇降装置１０は、テンションバー２８と、テンションバー２８を移動させるための移動機構である油圧シリンダー３１とをさらに備えている。テンションバー２８は、カム２４及び２５の湾曲面２４ａ及び２５ａ（図２参照）に接するように転動するカムコロ２６及び２７を備えている。また、油圧シリンダー３１は円筒状のシリンダー２９と、シリンダー２９の内筒内に摺動可能に挿入されるロッド３０とを備えている。２つの内アーム１５，１５それぞれの基台１２側の端部付近同士を連結するように板状の内アーム連結部材３２が設けられており、シリンダー２９の端部が内アーム連結部材３２に設けられた取付部３２ａにピン３２ｂによって回動可能に取り付けられている。また、ロッド３０の端部は、テンションバー２８に接続されている。   The lifting device 10 further includes a tension bar 28 and a hydraulic cylinder 31 that is a moving mechanism for moving the tension bar 28. The tension bar 28 includes cam rollers 26 and 27 that roll so as to contact the curved surfaces 24 a and 25 a (see FIG. 2) of the cams 24 and 25. The hydraulic cylinder 31 includes a cylindrical cylinder 29 and a rod 30 that is slidably inserted into the inner cylinder of the cylinder 29. A plate-like inner arm connecting member 32 is provided so as to connect the vicinity of the ends of the two inner arms 15, 15 on the base 12 side, and the end of the cylinder 29 is provided on the inner arm connecting member 32. The mounting portion 32a is rotatably attached by a pin 32b. The end of the rod 30 is connected to the tension bar 28.

次に、テンションバー２８について説明する。
図４に示されるように、テンションバー２８は、カムコロ２６及び２７が回転可能に取り付けられた２つの板状のカムコロ取付部３３，３３と、２つのカムコロ取付部３３，３３同士を連結する板状の連結部３４とを備え、全体としてコの字形状を有している。連結部３４の中央部分には貫通穴３５が設けられている。雄ねじ部が形成されたロッド３０の端部が貫通穴３５に挿入されて連結部３４を貫通し、このロッド３０の端部に座金３７が挿入されてナット３６が螺合することによって、ロッド３０の端部が連結部３４に接続されている。 Next, the tension bar 28 will be described.
As shown in FIG. 4, the tension bar 28 includes two plate-shaped cam roller attachment portions 33 and 33 to which the cam rollers 26 and 27 are rotatably attached, and a plate that connects the two cam roller attachment portions 33 and 33 to each other. And has a U-shape as a whole. A through hole 35 is provided in the central portion of the connecting portion 34. The end of the rod 30 in which the male thread portion is formed is inserted into the through hole 35 and penetrates the connecting portion 34. The washer 37 is inserted into the end of the rod 30 and the nut 36 is screwed into the rod 30. Are connected to the connecting portion 34.

次に、この実施の形態に係るリフターの動作について説明する。
図２に示されるように、油圧シリンダー３１の作動によりロッド３０がシリンダー２９の内筒内に入り込むように摺動すると、ロッド３０がテンションバー２８を引っ張ることにより、テンションバー２８が内アーム１５の下側に位置しながらピン１７の方向に移動する。すると、カムコロ２６及び２７がそれぞれ湾曲面２４ａ及び２５ａに接しながらピン１７の方向に転動することにより、内アーム１５及び外アーム１６がピン１７を中心に回動し、案内手段１４がアルファベットの「Ｘ」字形状の状態になる。この状態を油圧シリンダー３１が維持することにより、昇降台１３が基台１２に対して平行を保ったまま最高高さに維持される。このとき、リフター１の高さが最高となる。 Next, the operation of the lifter according to this embodiment will be described.
As shown in FIG. 2, when the rod 30 slides into the inner cylinder of the cylinder 29 by the operation of the hydraulic cylinder 31, the tension bar 28 pulls the tension bar 28, so that the tension bar 28 moves to the inner arm 15. It moves in the direction of the pin 17 while being positioned on the lower side. Then, the cam rollers 26 and 27 roll in the direction of the pin 17 while being in contact with the curved surfaces 24a and 25a, respectively, whereby the inner arm 15 and the outer arm 16 are rotated around the pin 17, and the guide means 14 is formed of the alphabet. It becomes the state of “X” shape. By maintaining this state by the hydraulic cylinder 31, the lifting platform 13 is maintained at the maximum height while being kept parallel to the base 12. At this time, the height of the lifter 1 is the highest.

次に、ロッド３０がシリンダー２９の内筒内から突出すように摺動すると、ロッド３０がテンションバー２８を押すことにより、テンションバー２８が内アーム１５の下側に位置しながらピン１７から離れる方向に移動する。すると、カムコロ２６及び２７がそれぞれ湾曲面２４ａ及び２５ａに接しながらピン１７から離れる方向に転動することにより、内アーム１５及び外アーム１６がピン１７を中心に回動し、案内手段１４がつぶれたアルファベットの「Ｘ」字形状の状態、すなわち、案内手段の高さが低くなると共に幅が広くなる。これにより、昇降台１３は、基台１２に対して平行を保ったまま下降する。   Next, when the rod 30 slides so as to protrude from the inner cylinder of the cylinder 29, the rod 30 pushes the tension bar 28, so that the tension bar 28 moves away from the pin 17 while being positioned below the inner arm 15. Move in the direction. Then, the cam rollers 26 and 27 roll in a direction away from the pin 17 while being in contact with the curved surfaces 24a and 25a, respectively, whereby the inner arm 15 and the outer arm 16 are rotated around the pin 17 and the guide means 14 is crushed. The state of the “X” shape of the alphabet, that is, the height of the guiding means is lowered and the width is widened. As a result, the lift 13 is lowered while maintaining parallel to the base 12.

昇降台１３が下降すると、連結部３４が内アーム１５と重ならないように上コロ１９を通り越して上コロ１９に対して内アーム１５とは反対側に位置するまで、テンションバー２８は移動する（図３及び４）。さらにカムコロ取付部３３は内アーム１５と外アーム１６との間を移動するので、内アーム１５の回動には影響を与えない。従って、内アーム１５はテンションバー２８の影響を受けずに回動することができる。昇降台１３が最低高さまで下降すると、内アーム１５と外アーム１６とは互いに水平の状態になる。この状態で、リフター１を側方から見ると、図５に示されるように、内アーム１５と外アーム１６とが重なり合った状態で、昇降装置１０が基台１２と昇降台１３との間に収容される。これにより、リフター１の高さが、基台１２及び昇降台１３の厚みと、内アーム１５または外アーム１６の幅との合計になる。すなわち、昇降台１３の最低高さができる限り低くなる。   When the elevator 13 is lowered, the tension bar 28 moves until it passes through the upper roller 19 and is positioned on the opposite side of the inner arm 15 with respect to the upper roller 19 so that the connecting portion 34 does not overlap the inner arm 15 ( 3 and 4). Furthermore, since the cam roller mounting portion 33 moves between the inner arm 15 and the outer arm 16, it does not affect the rotation of the inner arm 15. Therefore, the inner arm 15 can be rotated without being affected by the tension bar 28. When the elevator 13 is lowered to the minimum height, the inner arm 15 and the outer arm 16 are in a horizontal state. In this state, when the lifter 1 is viewed from the side, as shown in FIG. 5, the lifting device 10 is placed between the base 12 and the lifting platform 13 with the inner arm 15 and the outer arm 16 overlapping. Be contained. Thereby, the height of the lifter 1 is the sum of the thicknesses of the base 12 and the lift 13 and the width of the inner arm 15 or the outer arm 16. That is, the minimum height of the lift 13 is as low as possible.

このように、テンションバー２８は、カムコロ２６及び２７が回転可能に取り付けられると共に内アーム１５と外アーム１６との間を移動する２つのカムコロ取付部３３，３３と、２つのカムコロ取付部３３，３３を連結する連結部３４とを備えることにより、カムコロ２６及び２７がカム２４及び２５に接しながら転動することによって昇降台１３が下降したときに、連結部３４が内アーム１５と重ならないように上コロ１９に対して内アーム１５とは反対側に位置するまで、テンションバー２８が移動するので、内アーム１５がテンションバー２８の影響を受けずに回動することができる。これにより、昇降台１３の最低高さをできる限り低くすることができる。したがって、図１に示されるように、リフター１を玄関におけるあがりかまち４の段差解消を目的に使用する場合、リフター１を土間部分５に設置するために土間部分５に設けるくぼみの深さを、できる限り小さくすることができる。   As described above, the tension bar 28 includes two cam roller attachment portions 33 and 33 that are rotatably attached to the cam rollers 26 and 27 and move between the inner arm 15 and the outer arm 16, and two cam roller attachment portions 33, By providing the connecting portion 34 for connecting 33, the connecting portion 34 does not overlap the inner arm 15 when the lifting platform 13 is lowered by the rolling of the cam rollers 26 and 27 while being in contact with the cams 24 and 25. Since the tension bar 28 moves until the upper roller 19 is located on the opposite side of the inner arm 15, the inner arm 15 can be rotated without being affected by the tension bar 28. Thereby, the minimum height of the lifting platform 13 can be made as low as possible. Therefore, as shown in FIG. 1, when the lifter 1 is used for the purpose of eliminating the level difference of the riser town 4 at the entrance, the depth of the depression provided in the dirt part 5 in order to install the lifter 1 in the dirt part 5, It can be as small as possible.

この実施の形態では、テンションバー２８を移動する移動機構として油圧シリンダー３１を用いたが、これに限定するものではない。駆動源により駆動される回転ナットとこの回転ナットと螺合するねじ軸とからなる移動機構、例えば、ボールねじを用いてもよい。   In this embodiment, the hydraulic cylinder 31 is used as a moving mechanism for moving the tension bar 28, but the present invention is not limited to this. A moving mechanism including a rotating nut driven by a driving source and a screw shaft screwed with the rotating nut, for example, a ball screw may be used.

この発明の実施の形態に係るリフターを玄関の土間部分に設けたときの断面図である。It is sectional drawing when the lifter which concerns on embodiment of this invention is provided in the dirt part of the entrance. この実施の形態に係るリフターの高さが最高の状態におけるリフターの側面図である。It is a side view of the lifter in the state where the height of the lifter concerning this embodiment is the highest. この実施の形態に係るリフターの高さが最低の状態におけるリフターの昇降装置の平面図である。It is a top view of the raising / lowering apparatus of the lifter in the state where the height of the lifter which concerns on this embodiment is the lowest. 図３におけるテンションバーおよびその周辺の拡大平面図である。FIG. 4 is an enlarged plan view of a tension bar and its periphery in FIG. 3. この実施の形態に係るリフターの高さが最低の状態におけるリフターの側面図である。It is a side view of the lifter in the state where the height of the lifter concerning this embodiment is the lowest. 高さが最高の状態における従来のリフターの側面図である。It is a side view of the conventional lifter in the highest state. 高さが最低の状態における従来のリフターの昇降装置の平面図である。It is a top view of the raising / lowering apparatus of the conventional lifter in the state where the height is the lowest. 高さが最低の状態における従来のリフターの側面図である。It is a side view of the conventional lifter in the state where the height is the lowest.

符号の説明Explanation of symbols

１ リフター、１０ 昇降装置、１２ 基台、１３ 昇降台、１４ 案内手段、１５ 内アーム、１６ 外アーム、１９ 上コロ、２２ 下コロ、２４，２５ カム、２６，２７ カムコロ、２８ テンションバー、 ３１ 油圧シリンダー（移動機構）、３３ カムコロ取付部、３４ 連結部。   1 Lifter, 10 Elevator, 12 Base, 13 Elevator, 14 Guide, 15 Inner Arm, 16 Outer Arm, 19 Upper Roller, 22 Lower Roller, 24, 25 Cam, 26, 27 Cam Roller, 28 Tension Bar, 31 Hydraulic cylinder (moving mechanism), 33 cam roller mounting part, 34 connecting part.

Claims (1)

基台と、昇降台と、前記昇降台を前記基台に対して平行を保ったまま昇降させる昇降装置とを備えたリフターであって、
前記昇降装置は、
一端が前記基台に回動可能に取付けられると共に他端に前記昇降台の下面を転動する上コロが取付けられた内アーム、及び一端が前記昇降台に回動可能に取付けられると共に他端に前記基台の上面を転動する下コロが取付けられた外アームが交差して回転可能に支持された２つの案内手段と、
前記内アーム及び前記外アームに設けられたカムと、
前記カムに接しながら転動するカムコロを備えたテンションバーと、
前記テンションバーを移動させる移動機構と
を備え、
前記テンションバーは、
前記カムコロが回転可能に取り付けられると共に前記内アームと前記外アームとの間を移動する２つのカムコロ取付部と、
前記２つのカムコロ取付部を連結する連結部と
を備え、
前記カムコロが前記カムに接しながら転動することによって前記昇降台が下降したときに、前記連結部が前記内アームと重ならないように前記上コロに対して前記内アームとは反対側に位置するまで、前記テンションバーが移動するリフター。 A lifter comprising a base, a lift, and a lifting device that lifts and lowers the lift while maintaining parallel to the base,
The lifting device is
One end is rotatably attached to the base and the other arm is attached to the other end with an upper roller for rolling the lower surface of the elevator, and one end is rotatably attached to the elevator and the other end Two guide means rotatably supported by crossing an outer arm to which a lower roller that rolls on the upper surface of the base is attached,
Cams provided on the inner arm and the outer arm;
A tension bar with a cam roller that rolls in contact with the cam;
A moving mechanism for moving the tension bar,
The tension bar is
Two cam roller mounting portions that are rotatably mounted and move between the inner arm and the outer arm;
A connecting portion for connecting the two cam roller mounting portions;
When the cam roller rolls while in contact with the cam, the connecting portion is positioned on the opposite side of the upper arm with respect to the upper roller so that the connecting portion does not overlap with the inner arm when the lifting platform is lowered. Until the tension bar moves.
JP2005374933A 2005-12-27 2005-12-27 Lifter Active JP4916716B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508372A (en) * 2012-06-21 2014-01-15 株式会社名机工 Workbench lifting device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103663257A (en) * 2013-12-09 2014-03-26 苏州市职业大学 Electric lifting platform

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06345394A (en) * 1993-06-07 1994-12-20 Daifuku Co Ltd Lifter
JPH11209082A (en) * 1998-01-26 1999-08-03 Daifuku Co Ltd Lifter
JP2000233899A (en) * 1999-02-15 2000-08-29 Meikikou:Kk Table lifting device
JP2001278586A (en) * 2000-04-03 2001-10-10 Meikikou:Kk Table lift device
JP2003020196A (en) * 2001-07-11 2003-01-21 Nippon Kiki Kogyo Kk Lifter
JP2004123264A (en) * 2002-09-30 2004-04-22 Nippon Kiki Kogyo Kk Stairway lifter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06345394A (en) * 1993-06-07 1994-12-20 Daifuku Co Ltd Lifter
JPH11209082A (en) * 1998-01-26 1999-08-03 Daifuku Co Ltd Lifter
JP2000233899A (en) * 1999-02-15 2000-08-29 Meikikou:Kk Table lifting device
JP2001278586A (en) * 2000-04-03 2001-10-10 Meikikou:Kk Table lift device
JP2003020196A (en) * 2001-07-11 2003-01-21 Nippon Kiki Kogyo Kk Lifter
JP2004123264A (en) * 2002-09-30 2004-04-22 Nippon Kiki Kogyo Kk Stairway lifter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103508372A (en) * 2012-06-21 2014-01-15 株式会社名机工 Workbench lifting device

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