JP2017144912A - Transport dolly - Google Patents

Transport dolly Download PDF

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JP2017144912A
JP2017144912A JP2016028844A JP2016028844A JP2017144912A JP 2017144912 A JP2017144912 A JP 2017144912A JP 2016028844 A JP2016028844 A JP 2016028844A JP 2016028844 A JP2016028844 A JP 2016028844A JP 2017144912 A JP2017144912 A JP 2017144912A
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mounting body
front wheel
support member
wheel
side support
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JP6645863B2 (en
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高橋 誠
Makoto Takahashi
誠 高橋
孝義 土田
Takayoshi Tsuchida
孝義 土田
悟 保坂
Satoru Hosaka
悟 保坂
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Okamura Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a transport dolly capable of nesting in a state where a mounting body is rotated in a substantially vertical direction and having a high degree of freedom in designing the vertical movement of a connecting frame in accordance with the lifting operation of the mounting body.SOLUTION: A transport dolly includes a lifting mechanism 9 for positioning intermediate wheels above front wheels 2 according to the operation of rotating a mounting body 8 from a substantially horizontal state to a substantially vertical state. The lifting mechanism 9 consists of a pivot pin 54 projecting from the left and right directions of a front wheel side support member 5, a guide pin 67 projecting from the left and right directions of a connecting frame 6, and a rotating plate 82 extending from the mounting body 8. The rotating plate 82 is formed with an opening for pivotally supporting the pivot pin 54 and a guide groove 84 for guiding the guide pin 67.SELECTED DRAWING: Figure 5

Description

本発明は、長手方向両端に旋回車輪が取り付けられ、長手方向の中間に中間車輪が取り付けられ、ネスティングして保管可能な運搬用台車に関するものである。   The present invention relates to a transporting carriage that has turning wheels attached to both ends in the longitudinal direction, an intermediate wheel attached to the middle in the longitudinal direction, and can be stored in a nested manner.

スーパーマーケット、ドラッグストア、倉庫等において、荷物を運搬する際に使用される運搬用台車は、荷物を載置する載置体と、載置体をその上部に支持するフレームと、フレームに直交して固定され把持操作される把持部と、フレームの下方において長手方向両端に取り付けられた旋回車輪、長手方向の中間に固定的に取り付けられた中間車輪により主に構成されている。運搬用台車は、荷物の運搬や保管用に使用する時には直進性が求められる一方で、荷物を載置体上に載置しない状態で運搬用台車を保管場所に移動させる場合や、保管場所から使用場所に移動させる場合には、回頭性が求められている。この直進性と回頭性とを両立させるために、中間の中間車輪の位置を上下に移動可能に構成し、直進性が求められる際には、中間車輪を下方に位置させ床に接触、転動させて直進性を担保し、一方、回頭性が求められる際には、中間車輪を上方に位置させ床から離間させて旋回車輪のみを床に接触、転動させることで回頭性を担保している。   In a supermarket, a drug store, a warehouse, etc., a transport cart used for transporting a load is a mounting body for mounting the load, a frame for supporting the mounting body on the top, and a frame orthogonal to the frame. It is mainly composed of a gripping portion that is fixed and gripped, a turning wheel that is attached to both ends in the longitudinal direction below the frame, and an intermediate wheel that is fixedly attached in the middle of the longitudinal direction. While transport carts are required to go straight when they are used for transporting and storing luggage, the transport carts can be moved to a storage location without placing the load on the mounting body, or from the storage location. When moving to a place of use, turnability is required. In order to achieve both straightness and turning performance, the intermediate intermediate wheel is configured so that it can be moved up and down. When straightness is required, the intermediate wheel is positioned downward to contact the floor and roll. On the other hand, when turning ability is required, on the other hand, when turning is required, the intermediate wheel is positioned upward and separated from the floor, and only the turning wheel is brought into contact with the floor and rolled to ensure turning ability. Yes.

運搬用台車のフレームに取り付けた中間車輪の位置を上下に移動させる構造としてフレームに対して中間車輪を略鉛直面に沿って回動可能に取り付けることにより、中間車輪の位置を上下させるものが提案されている(例えば特許文献1)。
また、運搬用台車を保管する際に、運搬用台車が占有する空間を小さくするために、略水平状態の載置体を略鉛直状態まで回動させた状態で隣接する運搬用台車に一部を重ねて保管するネスティングと呼ばれる保管形態を採るものもある。ネスティングを実現するために、フレームを、一方の旋回車輪が取り付けられた前車輪保持部材と、他方の旋回車輪と中間車輪とが取り付けられた連結フレームとの2つの部材に分け、連結フレームが前車輪保持部材側において、相対的に上下動可能な構成として、載置体の略水平状態から略鉛直状態への回動に連動させて連結フレームを上方に移動させて中間車輪の位置を持ち上げるものも提案されている(例えば特許文献2参照)。
As a structure that moves the position of the intermediate wheel attached to the frame of the transport carriage up and down, it is proposed to raise and lower the position of the intermediate wheel by attaching the intermediate wheel to the frame so as to be rotatable along a substantially vertical plane. (For example, Patent Document 1).
In order to reduce the space occupied by the transportation carriage when storing the transportation carriage, a part of the transportation carriage adjacent to the adjacent transportation carriage is rotated in a substantially vertical state. Some of them take a storage form called nesting, which stores them in layers. In order to achieve nesting, the frame is divided into two members: a front wheel holding member to which one turning wheel is attached and a connecting frame to which the other turning wheel and intermediate wheel are attached. A structure that can move up and down relatively on the wheel holding member side, and moves the connecting frame upward in conjunction with the rotation of the mounting body from the substantially horizontal state to the substantially vertical state to raise the position of the intermediate wheel. Has also been proposed (see, for example, Patent Document 2).

具体的には、特許文献2に記載された運搬用台車は、図8を参照し、図示しない中間車輪及び後車輪が取り付けられた連結フレーム105上にパレット102(台板)が載置されている。また、パレット102の一端には筒状体109が固設されており、筒状体109に前車輪側保持部材108に立設された支柱108aが貫通されており、筒状体109は支柱108aに対して上下方向にスライド可能とされている。また、パレット102の先端には筒状体109を挟むようにL字状の回動部材110,110が取り付けられている。回動部材110,110はその先端が、支柱108aに固設された軸支部111に軸支されている。また、回動部材110,110の略中間位置には、平板状の連結部115,115の一端を軸支する軸支部113,113が固設されている。連結部115,115の他端には連結フレーム105を下方から懸架する棒状の懸架部114が設けられている。   Specifically, in the transportation carriage described in Patent Document 2, a pallet 102 (base plate) is placed on a connection frame 105 to which an intermediate wheel and a rear wheel (not shown) are attached, with reference to FIG. Yes. In addition, a cylindrical body 109 is fixed to one end of the pallet 102, and a column 108a standing on the front wheel side holding member 108 is penetrated through the cylindrical body 109. The cylindrical body 109 is supported by the column 108a. Is slidable in the vertical direction. Further, L-shaped rotating members 110 and 110 are attached to the tip of the pallet 102 so as to sandwich the cylindrical body 109. The ends of the rotating members 110 and 110 are pivotally supported by a pivotal support 111 fixed to the column 108a. Further, shaft support portions 113, 113 that pivotally support one ends of the plate-like connecting portions 115, 115 are fixedly provided at substantially intermediate positions of the rotating members 110, 110. A rod-like suspension part 114 for suspending the connection frame 105 from below is provided at the other end of the connection parts 115, 115.

パレット102が連結フレーム105上に略水平に載置された使用状態から、ネスティングのために、パレット102の他端を持ち上げると、パレット102及び回動部材110,110は、軸支部111を中心として回動させられ、支柱108aに略平行かつ略鉛直となる状態まで移動させられる。この回動に伴い、連結部115,115及び懸架部114が上方に持ち上げられ、連結フレーム105の下方が懸架部114の上方に当接した状態とされるため、筒状体109が支柱108aに沿って上方に移動し、連結フレーム105に取り付けられた中間車輪が上昇する。このようにして、パレット102が略鉛直状態とされて運搬用台車はネスティングが可能となり、かつ中間車輪が上昇するので回頭性に優れる。   When the other end of the pallet 102 is lifted for nesting from the use state where the pallet 102 is placed substantially horizontally on the connection frame 105, the pallet 102 and the rotating members 110 and 110 are centered on the shaft support 111. It is rotated and moved to a state that is substantially parallel to and substantially vertical to the column 108a. With this rotation, the connecting parts 115 and 115 and the suspension part 114 are lifted upward, and the lower part of the connection frame 105 is brought into contact with the upper part of the suspension part 114, so that the cylindrical body 109 is attached to the support column 108a. The intermediate wheel attached to the connecting frame 105 is moved upward. In this way, the pallet 102 is brought into a substantially vertical state, and the transportation carriage can be nested, and the intermediate wheel is raised, so that the turning ability is excellent.

特許第4019183号(段落0023、図5)Japanese Patent No. 4019183 (paragraph 0023, FIG. 5) 特開2012−111454号公報(段落0029-段落0030、図1-図3)JP 2012-111454 A (paragraph 0029-paragraph 0030, FIG. 1 to FIG. 3)

上述したように、特許文献2に示される運搬用台車は、中間車輪の上下動がパレット102の回動に連動しているため、運搬用台車の使用状態とネスティングのための保管状態における固定用車輪の上下位置とパレット102の回動状態が一連の動作で連動して変更できるため、両状態間の切り換え操作手順が簡便にできるという利点がある。
しかしながら、特許文献2に記載された運搬用台車は、中間車輪の上下動とパレット102の回動との連動を、L字状の回動部材110,110と板状の連結部115,115から構成されるリンク機構により実現しているため、すなわち軸支部111と軸支部113,113間の距離は一定であるため、パレット102の持ち上げ動作に伴って懸架部114から略一定の力が連結フレーム105に作用し、パレット102の持ち上げ動作に伴う連結フレーム105の動作の設計自由度が低く操作の円滑性等について改善の余地があった。
As described above, the transportation cart shown in Patent Document 2 is for fixing in the storage state for use and nesting of the transportation cart because the vertical movement of the intermediate wheel is interlocked with the rotation of the pallet 102. Since the vertical position of the wheel and the rotation state of the pallet 102 can be changed in conjunction with each other by a series of operations, there is an advantage that the switching operation procedure between both states can be simplified.
However, the transport cart described in Patent Document 2 links the vertical movement of the intermediate wheel and the rotation of the pallet 102 from the L-shaped rotating members 110 and 110 and the plate-shaped connecting portions 115 and 115. Since the link mechanism is realized, that is, the distance between the shaft support portion 111 and the shaft support portions 113 and 113 is constant, a substantially constant force is applied from the suspension portion 114 along with the lifting operation of the pallet 102 to the connecting frame. 105, and the design freedom of the operation of the connecting frame 105 accompanying the lifting operation of the pallet 102 is low, and there is room for improvement in the smoothness of the operation.

本発明は、このような問題点に着目してなされたもので、載置体を略鉛直方向に回動させた状態でネスティングが可能であるとともに、載置体の持ち上げ動作に伴う連結フレームの上下動の設計自由度が高い運搬用台車を提供することを目的とする。   The present invention has been made paying attention to such a problem, and is capable of nesting in a state in which the mounting body is rotated in a substantially vertical direction, and of the connection frame accompanying the lifting operation of the mounting body. An object is to provide a transport cart with a high degree of freedom in design of vertical movement.

前記課題を解決するために、本発明の運搬用台車は、
前車輪と、
前記前車輪が取り付けられた前車輪側支持部材と、
後車輪と、
前記前車輪と前記後車輪との中間部に配置される中間車輪と、
前記後車輪及び前記中間車輪が取り付けられ、前記前車輪側支持部材に対して相対的に上下方向に移動可能な連結フレームと、
前記連結フレーム上に支持される載置体とを備え、
前記載置体を略水平状態から略鉛直状態に回動させる動作に応じて前記中間車輪を、前記前車輪よりも上方に位置させる昇降機構を備える運搬用台車であって、
前記昇降機構は、
前記前車輪側支持部材の左右方向から突出する枢動ピンと、
前記連結フレームの左右方向から突出するガイドピンと、
前記載置体から延出する回動プレートとから構成され、
前記回動プレートには、
前記枢動ピンを軸支する被枢動部と、
前記ガイドピンをガイドするガイド溝とが形成されている
ことを特徴としている。
この特徴によれば、載置体は、回動時に、前車輪側支持部材に対して相対的に枢動させられるとともに、載置体は連結フレームに相対的にガイドされるため、ガイド溝の形状を変えることで載置体の回動に伴う連結フレームの上下動の移動軌跡を変えることができ、載置体の持ち上げ動作に伴う連結フレームの上下動の設計自由度が高い運搬用台車を提供することができる。
In order to solve the above-mentioned problem, the transportation carriage of the present invention is
Front wheels,
A front wheel side support member to which the front wheel is attached;
The rear wheels,
An intermediate wheel disposed in an intermediate portion between the front wheel and the rear wheel;
A connecting frame to which the rear wheel and the intermediate wheel are attached, and movable in a vertical direction relative to the front wheel side support member;
A mounting body supported on the connection frame,
A transporting carriage including a lifting mechanism for positioning the intermediate wheel above the front wheel according to an operation of rotating the mounting body from a substantially horizontal state to a substantially vertical state;
The lifting mechanism is
A pivot pin protruding from the left-right direction of the front wheel side support member;
A guide pin protruding from the left-right direction of the connecting frame;
It consists of a rotating plate that extends from the mounting body,
In the rotating plate,
A pivoted portion that pivotally supports the pivot pin;
A guide groove for guiding the guide pin is formed.
According to this feature, the mounting body is pivoted relative to the front wheel side support member at the time of rotation, and the mounting body is relatively guided by the connecting frame. By changing the shape, it is possible to change the movement trajectory of the connecting frame up and down with the rotation of the mounting body, and to provide a transport cart with a high degree of freedom in designing the connecting frame up and down movement with the lifting operation of the mounting body. Can be provided.

前記連結フレームは、前記前車輪側支持部材を上下方向に移動可能に案内する案内部を有することを特徴としている。
この特徴によれば、連結フレームの案内部が前車輪側支持部材を上下方向に相対的に案内するため、部品点数を増やすことがなく、運搬用台車をコンパクトに構成できるとともに連結フレームの上下方向の移動が円滑となる。
The connection frame includes a guide portion that guides the front wheel side support member so as to be movable in the vertical direction.
According to this feature, since the guide portion of the connecting frame relatively guides the front wheel side support member in the vertical direction, the transportation cart can be configured compactly without increasing the number of parts and the vertical direction of the connecting frame. Move smoothly.

前記ガイド溝は、前記載置体が略水平状態において略水平方向に延在していることを特徴としている。
この特徴によれば、載置体を回動させる際に、載置体を略鉛直状態に近づけるとガイド溝も略鉛直方向に延在することとなり、この状態では、載置体の回動量に対する連結フレームの上下方向の移動量が小さくなる。そのため、略鉛直状態において載置体の転倒を弱い力で防ぐことができる、さらに、載置体を略鉛直まで回動させる際に、前車輪側支持部材への急激な衝突を容易に抑制することができる。
The guide groove is characterized in that the mounting body extends in a substantially horizontal direction in a substantially horizontal state.
According to this feature, when the mounting body is rotated, if the mounting body is brought close to a substantially vertical state, the guide groove also extends in a substantially vertical direction. In this state, the rotation amount of the mounting body is The amount of movement of the connecting frame in the vertical direction is reduced. Therefore, it is possible to prevent the mounting body from overturning with a weak force in a substantially vertical state. Further, when the mounting body is rotated to a substantially vertical state, a sudden collision with the front wheel side support member is easily suppressed. be able to.

前記ガイド溝は、湾曲形状であることを特徴としている。
この特徴によれば、載置体の回動に伴う連結フレームの移動を円滑に行うことができる。
The guide groove has a curved shape.
According to this feature, the connection frame can be smoothly moved along with the rotation of the mounting body.

前記湾曲形状は、前記載置体が略水平状態において下方に凸であることを特徴としている。
この特徴によれば、載置体を略水平状態から回動させる直後には、ガイドピンがガイド溝に落ち込むようになり、載置体の回動量に対する連結フレームの上方への移動量が比較的小さく、高さの低い位置にある荷重の大きな状態の載置体を簡単に持ち上げることができる。
The curved shape is characterized in that the mounting body is convex downward in a substantially horizontal state.
According to this feature, immediately after the mounting body is rotated from the substantially horizontal state, the guide pin falls into the guide groove, and the moving amount of the connecting frame relative to the rotation amount of the mounting body is relatively small. It is possible to easily lift a mounting body that is small and has a high load at a low height.

前記連結フレームの端部には前記前車輪側支持部材の支柱に遊嵌された筒状部が設けられており、前記筒状部には前記枢動ピンが貫通する長孔が形成されていることを特徴としている。
この特徴によれば、連結フレームが前車輪側支持部材に案内される筒状部に、枢動ピンが配置されているため、昇降機構をコンパクトに構成することができる。
A cylindrical portion loosely fitted on the support column of the front wheel side support member is provided at an end portion of the connection frame, and a long hole through which the pivot pin passes is formed in the cylindrical portion. It is characterized by that.
According to this feature, since the pivot pin is disposed in the cylindrical portion where the connecting frame is guided by the front wheel side support member, the lifting mechanism can be configured compactly.

また、本発明の運搬用台車は、
前車輪と、
前記前車輪が取り付けられた前車輪側支持部材と、
後車輪と、
前記前車輪と前記後車輪との中間部に配置される中間車輪と、
前記後車輪及び前記中間車輪が取り付けられ、前記前車輪側支持部材に対して相対的に上下方向に移動可能な連結フレームと、
前記連結フレーム上に支持される載置体とを備え、
前記載置体を略水平状態から略鉛直状態に回動させる動作に応じて前記中間車輪を、前記前車輪よりも上方に位置させる昇降機構を備える運搬用台車であって、
前記昇降機構は、
前記前車輪側支持部材の左右方向から突出するガイドピンと、
前記連結フレームの左右方向から突出する枢動ピンと、
前記載置体から延出する回動プレートとから構成され、
前記回動プレートには、
前記枢動ピンを軸支する被枢動部と、
前記ガイドピンをガイドするガイド溝とが形成されている
ことを特徴としている。
この特徴によれば、載置体は、回動時に、連結フレームと相対的に枢動させられるとともに、載置体は前車輪側支持部材に相対的にガイドされるため、ガイド溝の形状を変えることで載置体の回動に伴う連結フレームの上下動の移動軌跡を変えることができ、載置体の持ち上げ動作に伴う連結フレームの上下動の設計自由度が高い。
In addition, the transportation carriage of the present invention is
Front wheels,
A front wheel side support member to which the front wheel is attached;
The rear wheels,
An intermediate wheel disposed in an intermediate portion between the front wheel and the rear wheel;
A connecting frame to which the rear wheel and the intermediate wheel are attached, and movable in a vertical direction relative to the front wheel side support member;
A mounting body supported on the connection frame,
A transporting carriage including a lifting mechanism for positioning the intermediate wheel above the front wheel according to an operation of rotating the mounting body from a substantially horizontal state to a substantially vertical state;
The lifting mechanism is
A guide pin protruding from the left-right direction of the front wheel side support member;
A pivot pin protruding from the left-right direction of the connecting frame;
It consists of a rotating plate that extends from the mounting body,
In the rotating plate,
A pivoted portion that pivotally supports the pivot pin;
A guide groove for guiding the guide pin is formed.
According to this feature, the mounting body is pivoted relative to the connection frame during rotation, and the mounting body is guided relatively to the front wheel side support member, so that the shape of the guide groove is reduced. By changing, the movement trajectory of the connecting frame along with the rotation of the mounting body can be changed, and the degree of freedom in design of the vertical movement of the connecting frame with the lifting operation of the mounting body is high.

実施例1における運搬用台車を示す斜視図であり、(A)は載置体を略水平状態とした図、(B)は載置体を略鉛直状態とした図であり、載置体の台板は説明の便宜上破線にて図示している。It is a perspective view which shows the trolley | bogie in Example 1, (A) is the figure which made the mounting body the substantially horizontal state, (B) is the figure which made the mounting body the substantially vertical state, The base plate is shown by broken lines for convenience of explanation. 図1の運搬用台車の載置体を回動させた状態を説明する図であり、(A)は載置体が略水平状態の図、(B)は載置体を略30度回動させた図、(C)は載置体を略60度回動させた図、(D)は載置体を略鉛直状態とした図である。It is a figure explaining the state which rotated the mounting body of the trolley | bogie of FIG. 1, (A) is a figure of a mounting body in a substantially horizontal state, (B) rotates a mounting body about 30 degree | times. FIG. 4C is a diagram in which the mounting body is rotated by approximately 60 degrees, and FIG. 4D is a diagram in which the mounting body is in a substantially vertical state. 図1の運搬用台車の下方側を拡大して示す正面図である。It is a front view which expands and shows the downward side of the trolley | bogie of FIG. 図1の運搬用台車の昇降機構を拡大して示す側面図である。It is a side view which expands and shows the raising / lowering mechanism of the trolley | bogie of FIG. 図4の昇降機構を回動させた状態を説明する図であり、(A)は載置体が略水平状態の図、(B)は載置体を略30度回動させた図、(C)は載置体を略60度回動させた図、(D)は載置体を略鉛直状態とした図である。FIGS. 5A and 5B are diagrams illustrating a state in which the lifting mechanism of FIG. 4 is rotated, where FIG. 5A is a diagram in which the mounting body is in a substantially horizontal state, and FIG. C is a diagram in which the mounting body is rotated by approximately 60 degrees, and (D) is a diagram in which the mounting body is in a substantially vertical state. 図1の運搬用台車をネスティングした状態を説明する図である。It is a figure explaining the state which nested the conveyance trolley | bogie of FIG. 実施例2における運搬用台車を示す側面図であり、(A)は載置体が略水平状態の図、前輪側支持部材の一部拡大図、及び連結フレームの一部拡大図、(B)は載置体を略45度回動させた図、(C)は載置体を略鉛直状態とした図である。It is a side view which shows the trolley | bogie in Example 2, (A) is a figure with a mounting body substantially horizontal state, a partially expanded view of a front wheel side support member, and a partially expanded view of a connection frame, (B). Is a diagram in which the mounting body is rotated approximately 45 degrees, and (C) is a diagram in which the mounting body is in a substantially vertical state. 従来の運搬用台車を説明する図である。It is a figure explaining the conventional carrying cart.

本発明に係る運搬用台車を実施するための形態を実施例に基づいて以下に説明する。   EMBODIMENT OF THE INVENTION The form for implementing the carrier trolley | bogie which concerns on this invention is demonstrated below based on an Example.

実施例1に係る運搬用台車につき、図1から図6を参照して説明する。以下、図2の紙面左側を運搬用台車の正面側(前方側)として説明する。また、図2の紙面左右方向を運搬用台車の長手方向として説明する。また、図3の紙面左右方向を運搬用台車の左右方向(短手方向)として説明する。   A transport cart according to the first embodiment will be described with reference to FIGS. Hereinafter, the left side of FIG. 2 will be described as the front side (front side) of the carriage. 2 will be described as the longitudinal direction of the carriage. 3 will be described as the left-right direction (short direction) of the transport carriage.

図1を参照して、運搬用台車1は、前車輪2,2と、後車輪3,3と、中間車輪4,4と、前車輪2,2が取りけられた前車輪側支持部材5、後車輪3,3及び中間車輪4,4が取り付けられた連結フレーム6、連結フレーム6上に支持され荷物が載置される載置体8、連結フレーム6を上下に昇降させる昇降機構9とから主に構成されている。
前車輪2,2及び後車輪3,3は、前車輪側支持部材5及び連結フレーム6にそれぞれ略水平方向に旋回可能に軸支された旋回車輪(図3参照。)であり、中間車輪4,4は長手方向に向いて連結フレーム6に固定的に取り付けられた中間車輪である。
Referring to FIG. 1, a transport carriage 1 includes a front wheel side support member 5 in which front wheels 2 and 2, rear wheels 3 and 3, intermediate wheels 4 and 4, and front wheels 2 and 2 are removed. A connecting frame 6 to which the rear wheels 3 and 3 and the intermediate wheels 4 and 4 are attached; a mounting body 8 that is supported on the connecting frame 6 and on which a load is placed; an elevating mechanism 9 that moves the connecting frame 6 up and down; Consists mainly of.
The front wheels 2, 2 and the rear wheels 3, 3 are turning wheels (see FIG. 3) that are pivotally supported by the front wheel side support member 5 and the connecting frame 6 so as to be able to turn in a substantially horizontal direction. , 4 are intermediate wheels fixedly attached to the connecting frame 6 in the longitudinal direction.

前車輪側支持部材5は、下方に前車輪2,2が取り付けられ、左右方向に延在する前車輪プレート51と、前車輪プレート51にネジ締結等により固着され上方に延びる断面角形状の支柱52と、支柱52の上方にネジ締結等により取り付けられた把持フレーム53により主に構成されている。なお、支柱52の断面形状は、角形状に限定されず、例えば円形状であってもよい。但し、後述するように、回動プレート82,82を2枚のプレートで構成する場合には、当該回動プレート82,82の配置・取付、回動のためのガイドが容易となるから、当該支柱52は、断面の左右が平面である形状であることが好ましい。   The front wheel side support member 5 has front wheels 2 and 2 attached below, a front wheel plate 51 extending in the left-right direction, and a column having a square cross section that is fixed to the front wheel plate 51 by screw fastening or the like and extends upward. 52 and a gripping frame 53 attached to the upper side of the column 52 by screw fastening or the like. In addition, the cross-sectional shape of the support | pillar 52 is not limited to square shape, For example, circular shape may be sufficient. However, as will be described later, when the rotation plates 82 and 82 are configured by two plates, the arrangement and attachment of the rotation plates 82 and 82 and a guide for rotation are facilitated. The support column 52 preferably has a shape in which the right and left of the cross section are flat.

連結フレーム6は、下方に後車輪3,3が取り付けられ、左右方向に延在する後車輪プレート61と、前車輪プレート51にネジ締結等により固着され上方に延びる断面角形状の支柱62と、支柱62の上方にネジ締結等により取り付けられた把持フレーム63、下方に中間車輪4,4が取り付けられ、左右方向に延在する中間車輪プレート64と、前車輪プレート51、後車輪プレート61及び中間車輪プレート64を連結する連結杆65、連結杆65の前方に固設された断面ロ字状の筒状部66、後方に固設された断面ロ字状の筒状部により主に構成されている。後方の筒状部は、後方の筒状部を中心として連結杆65が回動可能に支柱62に取り付けられている。また、中間車輪プレート64は連結杆65に相対移動不能に固着されている。   The connecting frame 6 has rear wheels 3 and 3 attached to the lower side, a rear wheel plate 61 extending in the left-right direction, a column 62 having an angular cross section that is fixed to the front wheel plate 51 by screw fastening or the like and extends upward, A grip frame 63 attached by screw fastening or the like above the support 62, intermediate wheels 4 and 4 are attached below, and an intermediate wheel plate 64 extending in the left-right direction, a front wheel plate 51, a rear wheel plate 61, and an intermediate It is mainly composed of a connecting rod 65 for connecting the wheel plate 64, a cylindrical section 66 having a square cross section fixed in front of the connecting rod 65, and a cylindrical section having a square cross section fixed in the rear. Yes. The rear cylindrical portion is attached to the support column 62 so that the connecting rod 65 can rotate around the rear cylindrical portion. Further, the intermediate wheel plate 64 is fixed to the connecting rod 65 so as not to be relatively movable.

図4を参照し、前方の筒状部66(案内部)は支柱52に対して上下方向に相対移動可能に取り付けられている。筒状部66には後述する枢動ピン54に干渉しないように上下方向に延びる長孔68が形成されている。なお、筒状部66は、断面コ字状の部材と平板状の部材を組み合わせて断面ロ字状としてもよいし、一部材の角筒から構成してもよい。前者は、支柱52に後付できることから好ましく、後者は、強度や製造を簡略化できることから好ましい。また、筒状部66は、周方向に連続する筒でなくとも、上下方向にスリットが形成された断面略C字状であってもよく、例えばリップ溝形鋼(C形鋼)により構成してもよい。さらに、筒状部66と支柱52との間に樹脂等からなるスライドブッシュを介装してもよい。スライドブッシュを用いることで筒状部66と支柱52との相対移動が円滑となる。   Referring to FIG. 4, the front cylindrical portion 66 (guide portion) is attached to the column 52 so as to be relatively movable in the vertical direction. A long hole 68 extending in the vertical direction is formed in the cylindrical portion 66 so as not to interfere with a pivot pin 54 described later. The tubular portion 66 may be formed by combining a U-shaped cross-section member and a flat plate-shaped member so as to have a square cross-section, or may be constituted by a single-piece square tube. The former is preferable because it can be retrofitted to the support column 52, and the latter is preferable because strength and manufacturing can be simplified. Further, the cylindrical portion 66 may not be a cylinder that is continuous in the circumferential direction, but may have a substantially C-shaped cross section in which slits are formed in the vertical direction. For example, the cylindrical portion 66 is configured by lip groove steel (C-shaped steel). May be. Further, a slide bush made of resin or the like may be interposed between the cylindrical portion 66 and the support column 52. By using the slide bush, the relative movement between the cylindrical portion 66 and the support column 52 becomes smooth.

載置体8は、略矩形の平板状の台板81と、台板81の前方先端側に取り付けられ台板81を枢支するための一対の回動プレート82,82により主に構成されている。一対の回動プレート82,82は、略L字形に形成されており、L字の短手側に後述する開口83,83等が形成されており、L字の長手側は締結等により台板81に固定されている。また、回動プレート82,82は筒状部66の左右の面に沿って当該左右の面に略面接した状態で配置されている(図3、図4参照。)。なお、図4、図5では、台板81は切断面により示している。   The mounting body 8 is mainly configured by a substantially rectangular flat plate base plate 81 and a pair of rotating plates 82 and 82 which are attached to the front end side of the base plate 81 and pivotally support the base plate 81. Yes. The pair of rotating plates 82 and 82 are formed in a substantially L shape, and openings 83 and 83 to be described later are formed on the short side of the L shape, and the long side of the L shape is a base plate by fastening or the like. 81 is fixed. Further, the rotating plates 82 are arranged along the left and right surfaces of the cylindrical portion 66 so as to be substantially in contact with the left and right surfaces (see FIGS. 3 and 4). 4 and 5, the base plate 81 is indicated by a cut surface.

また、台板81が略水平状態のときには、台板81の下部は、前車輪プレート51、後車輪プレート61、中間車輪プレート64に当接する位置関係とされており、台板81の荷重は、前車輪プレート51、後車輪プレート61、中間車輪プレート64により支持されている。また、台板81が略鉛直状態のときに、台板81が倒れないように、把持フレーム53と台板81との相対移動を防止する機構を設けることが望ましい。例えば、把持フレーム53にフック部、台板81に被フック部を設けておき、フック部と被フック部とを係合させるようにすればよい。   Further, when the base plate 81 is in a substantially horizontal state, the lower portion of the base plate 81 is in a positional relationship in contact with the front wheel plate 51, the rear wheel plate 61, and the intermediate wheel plate 64, and the load on the base plate 81 is The front wheel plate 51, the rear wheel plate 61, and the intermediate wheel plate 64 are supported. In addition, it is desirable to provide a mechanism for preventing the relative movement between the grip frame 53 and the base plate 81 so that the base plate 81 does not fall when the base plate 81 is in a substantially vertical state. For example, a hook part may be provided on the grip frame 53 and a hooked part may be provided on the base plate 81 so that the hook part and the hooked part are engaged with each other.

昇降機構9は、支柱52の左右方向から僅かに突出する枢動ピン54と、回動プレート82,82に設けられ枢動ピン54を軸支する円形の開口83,83(被枢動部)と、筒状部66の後方側かつ連結杆65の上方側で両者の交わる位置近傍で、筒状部66あるいは連結杆65の少なくとも何れか一方に固設され支柱52の左右方向から僅かに突出するガイドピン67と、回動プレート82,82に設けられガイドピン67をガイドする下方に凸状とされた湾曲形状の長孔84,84(ガイド溝)とから主に構成されている。図4に示されるように、台板81が略水平状態のときに、長孔84,84は略水平方向に延在するように配置されかつ略鉛直軸に対して略線対称な配置・形状とされている。   The elevating mechanism 9 includes a pivot pin 54 slightly protruding from the left and right direction of the support column 52 and circular openings 83 and 83 (pivoted parts) provided on the pivot plates 82 and 82 and pivotally supporting the pivot pin 54. And at the rear side of the tubular portion 66 and the upper side of the connecting rod 65, in the vicinity of the position where both of them intersect, the cylindrical portion 66 or the connecting rod 65 is fixed to at least one of the connecting rods 65 and slightly protrudes from the left-right direction. It comprises mainly guide pins 67 and curved elongated holes 84 and 84 (guide grooves) provided on the rotating plates 82 and 82 and projecting downward to guide the guide pins 67. As shown in FIG. 4, when the base plate 81 is in a substantially horizontal state, the long holes 84 and 84 are disposed so as to extend in a substantially horizontal direction and are substantially line symmetrical with respect to a substantially vertical axis. It is said that.

ここで、枢動ピン54及びガイドピン67におけるピンは少なくとも位置を定める機能を有するものを意味する。また、ガイド溝の一例として長孔84,84を例示しているが、ガイド溝は溝状の形状によりガイドする機能を有するものを意味し、孔形状に限られない。また、ガイドピン67の外径は長孔84,84の幅と略等しく形成され、ガイドピン67が長孔84,84の内壁に沿って移動する例について説明するが、ガイドピンはガイド溝の壁に沿ってガイドされるものであればよい。   Here, the pins in the pivot pin 54 and the guide pin 67 mean at least a function for determining the position. Moreover, although the elongate holes 84 and 84 are illustrated as an example of a guide groove, a guide groove means what has a function to guide by groove shape, and is not restricted to a hole shape. Further, an example in which the outer diameter of the guide pin 67 is formed to be substantially equal to the width of the long holes 84 and 84 and the guide pin 67 moves along the inner wall of the long holes 84 and 84 will be described. What is necessary is just to be guided along a wall.

次いで、主に図2、図5を参照して動作について説明する。
図2(A)、図5(A)に示される荷物等を載置する運搬用台車1の使用状態では、載置体8は地面に略平行状態とされている。この状態では、前車輪2,2は地面から僅かに離間し、後車輪3,3と中間車輪4,4とが地面に接地する。言い換えると、後車輪3,3の下と中間車輪4,4の下とを結ぶ線よりも前車輪2,2の下が上方に位置することを意味する。以下、単に、地面との接地乃至離間として説明する。また、前方側に荷物が多く載置されたときには、前車輪2,2と中間車輪4,4とが地面に接地している。いずれのときにも、固定的に取り付けられた中間車輪4,4が接地しているため、運搬用台車1の直進性が担保されている。このときガイドピン67は長孔84の後端に位置している。また、枢動ピン54は長孔68の上端に位置している。
Next, the operation will be described mainly with reference to FIGS.
In the use state of the transport carriage 1 on which the luggage or the like shown in FIGS. 2 (A) and 5 (A) is used, the mounting body 8 is substantially parallel to the ground. In this state, the front wheels 2 and 2 are slightly separated from the ground, and the rear wheels 3 and 3 and the intermediate wheels 4 and 4 are in contact with the ground. In other words, it means that the lower part of the front wheels 2, 2 is located above the line connecting the lower part of the rear wheels 3, 3 and the lower part of the intermediate wheels 4, 4. Hereinafter, it will be described simply as grounding or separation from the ground. When a large amount of luggage is placed on the front side, the front wheels 2 and 2 and the intermediate wheels 4 and 4 are in contact with the ground. In any case, since the intermediate wheels 4 and 4 fixedly attached are grounded, the straight traveling performance of the transport carriage 1 is secured. At this time, the guide pin 67 is located at the rear end of the long hole 84. The pivot pin 54 is located at the upper end of the long hole 68.

運搬用台車1を図2(A)、図5(A)に示される使用状態から、台板81を回動させることにより、ガイドピン67が長孔84にガイドされ筒状部66及び連結杆65の前方側は支柱52に対して上方に持ち上げられる。この動作に伴い、中間車輪プレート64及び中間車輪4,4は上方に持ち上げられ、図2(C)、図5(C)の状態において前車輪2,2、中間車輪4,4、後車輪3,3の下端が略同一平面上に位置し、図2(D)、図5(D)の状態において、中間車輪4,4は地面から僅かに離間し、前車輪2,2と後車輪3,3とが地面に接地している。図2(D)、図5(D)の状態では、旋回車輪である前車輪2,2と後車輪3,3が接地しているため旋回性が高く、かつ、台板81が略鉛直状態とされているため、複数の運搬用台車1の互いの一部を重ねて収容するネスティング、具体的には隣接する運搬用台車1,1・・の前車輪プレート51,51・・、後車輪プレート61,61・・、中間車輪プレート64,64・・を前後方向に並べて配置・収容するネスティングを行うことができる(図6を参照。)。
一方、運搬用台車1を収容した状態から載置体8を略鉛直状態から略水平状態に回動させることにより運搬用台車1を使用状態とすることができる。この載置体8を略鉛直状態から略水平状態に回動させる動作に応じて中間車輪4,4を、前車輪2,2よりも下方に位置させることができる。
2A and FIG. 5A, the guide plate 67 is guided by the long hole 84 to rotate the base plate 81 from the use state shown in FIGS. The front side of 65 is lifted upward with respect to the column 52. With this operation, the intermediate wheel plate 64 and the intermediate wheels 4 and 4 are lifted upward, and the front wheels 2 and 2, the intermediate wheels 4 and 4, and the rear wheel 3 in the state shown in FIGS. , 3 are positioned substantially on the same plane, and in the state of FIGS. 2 (D) and 5 (D), the intermediate wheels 4, 4 are slightly separated from the ground, and the front wheels 2, 2 and the rear wheels 3 , 3 are grounded to the ground. 2D and 5D, the front wheels 2 and 2 and the rear wheels 3 and 3 that are turning wheels are in contact with each other, so that the turning performance is high and the base plate 81 is in a substantially vertical state. Therefore, nesting that accommodates a part of each of the plurality of transport carriages 1, specifically, front wheel plates 51, 51... It is possible to perform nesting in which the plates 61, 61... And the intermediate wheel plates 64, 64 .. are arranged and accommodated in the front-rear direction (see FIG. 6).
On the other hand, the carriage 1 can be put into use by rotating the mounting body 8 from the substantially vertical state to the substantially horizontal state from the state in which the carriage 1 is accommodated. The intermediate wheels 4 and 4 can be positioned below the front wheels 2 and 2 according to the operation of rotating the mounting body 8 from the substantially vertical state to the substantially horizontal state.

このように、回動プレート82,82は、回動時に、支柱52の枢動ピン54に対して相対的に枢動させられるとともに、回動プレート82,82は、連結フレーム6のガイドピン67にガイドされるため、長孔84の形状を変えることで載置体8の回動に伴う連結フレーム6の上下動の移動軌跡を変えることができ、載置体8の持ち上げ動作に伴う連結フレーム6の上下動の設計自由度が高い。
また、長孔84とガイドピン67によるガイドであるため、リンク機構のように、回動時に外部に露出して移動する部位がほとんどないため、回動時に昇降機構9に他の物を巻き込む虞がない。さらに、昇降機構9は台板81の前方側の切り欠き凹部81Aの壁が左右両側に対向しているため、回動時に昇降機構9が他の物を巻き込む虞を少なくしている。
Thus, the rotating plates 82 and 82 are pivoted relative to the pivot pin 54 of the support column 52 when rotating, and the rotating plates 82 and 82 are guided by the guide pins 67 of the connecting frame 6. Therefore, by changing the shape of the long hole 84, the movement trajectory of the vertical movement of the connecting frame 6 accompanying the rotation of the mounting body 8 can be changed, and the connecting frame accompanying the lifting operation of the mounting body 8 can be changed. 6 has a high degree of freedom in design of vertical movement.
Further, since the guide is formed by the long hole 84 and the guide pin 67, there is almost no portion that is exposed and moved to the outside during rotation, unlike the link mechanism. There is no. Furthermore, since the elevating mechanism 9 faces the left and right sides of the notch recess 81A on the front side of the base plate 81, the elevating mechanism 9 is less likely to involve other objects during rotation.

また、長孔84は、載置体8が略水平状態において略水平方向に延在するように設けられている。載置体8を回動させる際に、載置体8を略鉛直状態に近づけると長孔84も略鉛直方向に延在することとなり、この状態では、載置体8の回動量に対する連結フレーム6の上方への移動量が小さくなる。そのため、略鉛直状態において載置体8の転倒を弱い力で防ぐことができる、さらに、載置体8を略鉛直状態まで回動させる際に、前車輪側支持部材5の把持フレーム53に急激に衝突することを抑制することが容易である。   Moreover, the long hole 84 is provided so that the mounting body 8 may extend in a substantially horizontal direction in a substantially horizontal state. When the mounting body 8 is rotated, if the mounting body 8 is brought close to a substantially vertical state, the elongated hole 84 also extends in a substantially vertical direction. In this state, the connecting frame with respect to the rotation amount of the mounting body 8. The amount of upward movement of 6 is reduced. Therefore, it is possible to prevent the mounting body 8 from falling down with a weak force in a substantially vertical state. Further, when the mounting body 8 is rotated to a substantially vertical state, the gripping frame 53 of the front wheel side support member 5 is suddenly moved. It is easy to suppress the collision.

さらに、長孔84は、湾曲形状であるため、載置体8の回動に伴う連結フレーム6の移動を円滑に行うことができる。さらに、長孔84は、枢動ピン54からの距離が連続的に変化する湾曲形状としているため、載置体8の回動量と連結フレーム6の上下移動量との関係を非線形にしつつ、載置体8の回動に伴う連結フレーム6の移動を円滑に行うことができる。   Furthermore, since the long hole 84 has a curved shape, the connection frame 6 can be smoothly moved along with the rotation of the mounting body 8. Further, since the long hole 84 has a curved shape in which the distance from the pivot pin 54 changes continuously, the long hole 84 is mounted while making the relationship between the rotation amount of the mounting body 8 and the vertical movement amount of the connecting frame 6 nonlinear. The connection frame 6 can be smoothly moved along with the rotation of the mounting body 8.

また、長孔84は、載置体8が略水平状態において略水平方向に延在するとともに下方に凸の湾曲形状であるため、同略水平方向に延在するとともに直線形状のものに比較し、載置体8を略水平状態から回動させる直後には、ガイドピン67が長孔84に落ち込むようになり、載置体8の回動量に対する連結フレーム6の上方への移動量が比較的小さく、連結フレーム6の上方への移動量が小さい分、高さの低い位置にある荷重の大きな状態の載置体8を簡単に持ち上げることができる。
さらに、長孔84の湾曲形状は、載置体8が略水平状態において下方に凸であるため、載置体8が略鉛直状態において、ガイドピン67の上方の部位67aが長孔84の斜め下方と接するため、略鉛直状態において載置体8の位置が安定する(図5(D)参照。)。
In addition, the elongated hole 84 extends in the substantially horizontal direction in a substantially horizontal state and has a curved shape that protrudes downward, so that the elongated hole 84 extends in the substantially horizontal direction and is compared with a linear shape. Immediately after the mounting body 8 is rotated from the substantially horizontal state, the guide pin 67 falls into the elongated hole 84, and the amount of upward movement of the connecting frame 6 relative to the amount of rotation of the mounting body 8 is relatively high. Since the moving amount is small and the amount of upward movement of the connecting frame 6 is small, it is possible to easily lift the mounting body 8 in a low load position and having a large load.
Further, the curved shape of the long hole 84 is convex downward when the mounting body 8 is in a substantially horizontal state, so that the portion 67a above the guide pin 67 is oblique to the long hole 84 when the mounting body 8 is in a substantially vertical state. Since it contacts the lower part, the position of the mounting body 8 is stabilized in a substantially vertical state (see FIG. 5D).

支柱52に遊嵌された筒状部66には枢動ピン54が貫通する長孔68が形成されているため、枢動ピン54とガイドピン67とを近くに配置でき、昇降機構9をコンパクトにすることができる。結果として、昇降機構9が他の物を巻き込む虞を少なくしている。さらに、載置体8が略水平状態において、長孔84と長孔68とが一部重複する配置関係としているので、運搬用台車1の使用時に、当該長孔84と長孔68との重なりを確認することで、昇降機構9が正しい位置(筒状部66が所定の下方位置)にあるのかを確認することができる。   A long hole 68 through which the pivot pin 54 penetrates is formed in the cylindrical portion 66 loosely fitted to the support column 52. Therefore, the pivot pin 54 and the guide pin 67 can be arranged close to each other, and the lifting mechanism 9 is compact. Can be. As a result, the possibility that the elevating mechanism 9 entrains other objects is reduced. Furthermore, when the mounting body 8 is in a substantially horizontal state, the long hole 84 and the long hole 68 are partially overlapped with each other. Therefore, when the transport carriage 1 is used, the long hole 84 and the long hole 68 overlap. By confirming, it is possible to confirm whether the elevating mechanism 9 is in the correct position (the cylindrical portion 66 is at a predetermined lower position).

また、回動プレート82,82はプレート状の部材であるため、開口83,長孔84を設けることが簡単であり、結果として、昇降機構9をコンパクトに構成できる。また、一対の回動プレート82,82を枢動ピン54及びガイドピン67の左右方向から配置・取付すればよいため、組み立てが簡単である。   Moreover, since the rotation plates 82 and 82 are plate-shaped members, it is easy to provide the opening 83 and the long hole 84. As a result, the lifting mechanism 9 can be configured compactly. Further, since the pair of rotating plates 82 and 82 may be arranged and attached from the left and right directions of the pivot pin 54 and the guide pin 67, the assembly is simple.

変形例1−1
実施例1では、枢動ピン54が支柱52に設けられ、かつ、枢動ピン54を軸支する開口83,83が回動プレート82,82に設けられる例について説明したが、枢動ピンが回動プレート82,82間を左右方向に連結して設けられ、かつ、該枢動ピンを軸支する開口が支柱52の左右の壁部に設けられるものであってもよい。
Modification 1-1
In the first embodiment, the example in which the pivot pin 54 is provided in the support column 52 and the openings 83 and 83 that pivotally support the pivot pin 54 is provided in the rotation plates 82 and 82 has been described. The rotation plates 82 and 82 may be connected in the left-right direction, and the opening for pivotally supporting the pivot pin may be provided in the left and right wall portions of the column 52.

変形例1−2
実施例1では、ガイドピン67が連結フレーム6に設けられ、かつ、長孔84,84が回動プレート82,82に設けられる例について説明したが、ガイドピンが回動プレート82,82間を左右方向に連結して設けられ、かつ、長孔が連結フレーム6(例えば連結杆65)の左右の壁部に設けられるものであってもよい。
Modification 1-2
In the first embodiment, an example in which the guide pin 67 is provided in the connecting frame 6 and the long holes 84 and 84 are provided in the rotating plates 82 and 82 has been described. However, the guide pin is provided between the rotating plates 82 and 82. The long holes may be provided in the left and right walls of the connecting frame 6 (for example, the connecting rod 65).

次に、実施例2に係る運搬用台車につき、図7を参照して説明する。実施例2は実施例1と昇降機構9’の構成が主に異なっている。なお、実施例1と同一構成で重複する構成を省略する。   Next, a transport carriage according to the second embodiment will be described with reference to FIG. The second embodiment is mainly different from the first embodiment in the configuration of the lifting mechanism 9 '. In addition, the same structure as Example 1 and the overlapping structure are abbreviate | omitted.

昇降機構9’は、筒状部70に固設され筒状部70の左右方向から僅かに突出する枢動ピン71,71と、回動プレート85,85に設けられ枢動ピン71,71を軸支する円形の開口83,83(被枢動部)と、前輪側支持部材5’の支柱52の左右方向から僅かに突出する長さのガイドピン57と、回動プレート85,85に設けられガイドピン57をガイドする台板81が略水平状態のときに左斜め下方に凸状とされた湾曲形状の長孔87,87(ガイド溝)とから主に構成されている。図7に示されるように、台板81が略水平状態のときに、長孔87,87は略水平方向に延在するように配置され、図7の紙面において枢動ピン71を基準として、第三象限に位置円弧が延在する形状とされている。また、長孔87,87の前方先端側の端部は曲線状の部位から直線状の平坦部87aが連なっており、この平坦部87aは、台板81が略鉛直状態のときに、長孔87,87の下方側には略水平方向に延びる位置関係とされている。また、筒状部70の左右下方には、ガイドピン57との干渉を防ぐ長孔72,72が形成されている。   The elevating mechanism 9 ′ is provided with pivot pins 71, 71 fixed to the cylindrical portion 70 and slightly protruding from the left-right direction of the cylindrical portion 70, and pivot pins 71, 71 provided on the rotating plates 85, 85. Provided in the circular openings 83 and 83 (the pivoted portion) to be supported, the guide pins 57 slightly projecting from the left and right directions of the column 52 of the front wheel side support member 5 ′, and the rotating plates 85 and 85. The base plate 81 that guides the guide pin 57 is mainly composed of curved long holes 87 and 87 (guide grooves) that are convex leftward and obliquely downward when the base plate 81 is in a substantially horizontal state. As shown in FIG. 7, when the base plate 81 is in a substantially horizontal state, the long holes 87 and 87 are arranged so as to extend in a substantially horizontal direction, and on the paper surface of FIG. The shape is such that the position arc extends in the third quadrant. Further, the end portions on the front tip side of the long holes 87, 87 are connected to a straight flat portion 87a from a curved portion, and the flat portion 87a is a long hole when the base plate 81 is in a substantially vertical state. On the lower side of 87, 87, the positional relationship extends in a substantially horizontal direction. Long holes 72 and 72 that prevent interference with the guide pin 57 are formed in the left and right lower portions of the cylindrical portion 70.

載置体8’を図7(A)に示される略水平状態から回動させることにより、ガイド溝である長孔87,87にガイドピン57がガイドされ、ガイドピン57と枢動ピン71との距離が徐々に離れ、この動作に伴って、支柱52が徐々に下方に移動させられることとなる(図7(B)を参照。)。載置体8’を図7(C)に示される略鉛直状態まで、回動させると、中間車輪4,4が地面から離れ、運搬用台車1は旋回性に優れ、ネスティグ可能となる。このとき、ガイドピン57が長孔87,87の略水平状態とされた平坦部87a,87aの上部に下方から当接し載置体8’の荷重を支持するため、載置体8’が略鉛直状態において安定する。   By rotating the mounting body 8 ′ from the substantially horizontal state shown in FIG. 7A, the guide pin 57 is guided in the long holes 87, 87 which are guide grooves, and the guide pin 57, the pivot pin 71, Is gradually separated, and the support column 52 is gradually moved downward with this operation (see FIG. 7B). When the mounting body 8 ′ is rotated to the substantially vertical state shown in FIG. 7C, the intermediate wheels 4 and 4 are separated from the ground, and the carriage 1 is excellent in turning performance and can be nested. At this time, since the guide pin 57 comes into contact with the upper portions of the flat portions 87a and 87a in which the long holes 87 and 87 are substantially horizontal from the lower side to support the load of the mounting body 8 ', the mounting body 8' is substantially omitted. Stable in a vertical state.

また、回動プレート85,85を略L字形状として、載置体8’が略水平状態のときに、その内側の角部が支柱52の近傍かつ略鉛直、長孔87,87が支柱52よりも前方に突出する配置構成としているため、台板81の先端側に突出する部位が少なく、載置面を広く確保できる。   Further, when the rotating plates 85 and 85 are substantially L-shaped, and the mounting body 8 ′ is in a substantially horizontal state, the corners inside thereof are in the vicinity of the column 52 and substantially vertical, and the long holes 87 and 87 are formed in the column 52. In addition, since the arrangement configuration protrudes further forward, there are few portions protruding toward the distal end side of the base plate 81, and a wide mounting surface can be secured.

また、載置体8’を図7(A)に示される略水平状態から回動させることにより、回動プレート85,85及び連結杆65も僅かに上方に持ち上げられる構造であるため、連結フレーム6’の後車輪3,3側の筒状部における回動角が小さくできる。   In addition, since the mounting plate 8 ′ is rotated from the substantially horizontal state shown in FIG. 7A, the rotating plates 85 and 85 and the connecting rod 65 are also lifted slightly upward. The rotation angle in the cylindrical part on the side of the rear wheels 3 and 6 'can be reduced.

変形例2−1
実施例2では、枢動ピン71,71が筒状部70に設けられ、かつ、枢動ピン71,71を軸支する開口86,86が回動プレート85,85に設けられる例について説明したが、枢動ピンが回動プレート82,82間を左右方向に連結して設けられ、かつ、該枢動ピンを軸支する開口が筒状部70の左右の壁部に設けられるものであってもよい。なお、この場合には、枢動ピンが支柱に干渉しないように配置構成する必要があることは言うまでもない。
Modification 2-1
In the second embodiment, the example in which the pivot pins 71 and 71 are provided in the cylindrical portion 70 and the openings 86 and 86 that pivotally support the pivot pins 71 and 71 are provided in the rotation plates 85 and 85 has been described. However, the pivot pin is provided by connecting the pivot plates 82, 82 in the left-right direction, and the opening for pivotally supporting the pivot pin is provided in the left and right wall portions of the cylindrical portion 70. May be. In this case, it goes without saying that it is necessary to arrange the pivot pin so that it does not interfere with the column.

変形例2−2
実施例2では、ガイドピン57が支柱52に設けられ、かつ、長孔87,87が回動プレート85,85に設けられる例について説明したが、ガイドピンが回動プレート82,82間を左右方向に連結して設けられ、かつ、長孔が支柱52の左右の壁部に設けられるものであってもよい。この場合には、ガイドピンが支柱に干渉しないように配置構成する必要があることは言うまでもない。
Modification 2-2
In the second embodiment, the example in which the guide pin 57 is provided in the support column 52 and the long holes 87 and 87 are provided in the rotating plates 85 and 85 has been described. The long holes may be provided in the right and left wall portions of the support column 52. In this case, it goes without saying that the guide pins need to be arranged so as not to interfere with the support columns.

なお、載置体8が略水平状態のときに、長孔87,87を略水平状態となるように配置した作用効果、長孔87,87を湾曲形状とした作用効果、一対の回動プレート85,85を設けた作用効果は実施例1と同様である。   In addition, when the mounting body 8 is in a substantially horizontal state, the effect that the long holes 87 and 87 are arranged to be in a substantially horizontal state, the effect that the long holes 87 and 87 are curved, and a pair of rotating plates The operational effects provided with 85 and 85 are the same as those of the first embodiment.

以上、本発明の実施例を図面により説明してきたが、具体的な構成はこれら実施例に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。   Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

例えば、実施例では、前車輪2,2、後車輪3,3、中間車輪4,4が各2輪である例について説明したが、前車輪、後車輪、中間車輪はそれぞれ少なくとも1輪あればよい。
また、運搬用台車1の使用時に前車輪2,2が地面から僅かに離れる例について説明したが、少なくとも載置体8を略鉛直状態としたときに中間車輪4,4が地面から僅かに離れるものであればよく、載置体8を略水平態とした時に前車輪2,2、後車輪3,3、中間車輪4,4の全てが接地するものであってもよい。
For example, in the embodiment, the example in which the front wheels 2 and 2, the rear wheels 3 and 3, and the intermediate wheels 4 and 4 are each two wheels has been described. However, if there are at least one front wheel, rear wheel, and intermediate wheel, respectively. Good.
In addition, the example in which the front wheels 2 and 2 are slightly separated from the ground when the transport carriage 1 is used has been described, but at least the intermediate wheels 4 and 4 are slightly separated from the ground when the mounting body 8 is in a substantially vertical state. As long as the mounting body 8 is in a substantially horizontal state, all of the front wheels 2, 2, the rear wheels 3, 3, and the intermediate wheels 4, 4 may be grounded.

1 運搬用台車
2 前車輪
3 後車輪
4 中間車輪
5、5’ 前車輪側支持部材
6、6’ 連結フレーム
8、8’ 載置体
9、9’ 昇降機構
52 支柱
54 枢動ピン
57 ガイドピン
65 連結杆
66 筒状部(案内部)
67 ガイドピン
68 長孔
70 筒状部
71 枢動ピン
81 台板
82 回動プレート
83 開口(被枢動部)
84 長孔(ガイド溝)
85 回動プレート
86 開口(被枢動部)
87 長孔(ガイド溝)
DESCRIPTION OF SYMBOLS 1 Carriage 2 Front wheel 3 Rear wheel 4 Intermediate wheel 5, 5 'Front wheel side support member 6, 6' Connecting frame 8, 8 'Mounting body 9, 9' Lifting mechanism 52 Post 54 Pivoting pin 57 Guide pin 65 Connecting rod 66 Cylindrical part (guide part)
67 Guide pin 68 Long hole 70 Cylindrical part 71 Pivoting pin 81 Base plate 82 Rotating plate 83 Opening (Pivoted part)
84 Long hole (guide groove)
85 Rotating plate 86 Opening (Pivoted part)
87 Long hole (guide groove)

Claims (7)

前車輪と、
前記前車輪が取り付けられた前車輪側支持部材と、
後車輪と、
前記前車輪と前記後車輪との中間部に配置される中間車輪と、
前記後車輪及び前記中間車輪が取り付けられ、前記前車輪側支持部材に対して相対的に上下方向に移動可能な連結フレームと、
前記連結フレーム上に支持される載置体とを備え、
前記載置体を略水平状態から略鉛直状態に回動させる動作に応じて前記中間車輪を、前記前車輪よりも上方に位置させる昇降機構を備える運搬用台車であって、
前記昇降機構は、
前記前車輪側支持部材の左右方向から突出する枢動ピンと、
前記連結フレームの左右方向から突出するガイドピンと、
前記載置体から延出する回動プレートとから構成され、
前記回動プレートには、
前記枢動ピンを軸支する被枢動部と、
前記ガイドピンをガイドするガイド溝とが形成されている
ことを特徴とする運搬用台車。
Front wheels,
A front wheel side support member to which the front wheel is attached;
The rear wheels,
An intermediate wheel disposed in an intermediate portion between the front wheel and the rear wheel;
A connecting frame to which the rear wheel and the intermediate wheel are attached, and movable in a vertical direction relative to the front wheel side support member;
A mounting body supported on the connection frame,
A transporting carriage including a lifting mechanism for positioning the intermediate wheel above the front wheel according to an operation of rotating the mounting body from a substantially horizontal state to a substantially vertical state;
The lifting mechanism is
A pivot pin protruding from the left-right direction of the front wheel side support member;
A guide pin protruding from the left-right direction of the connecting frame;
It consists of a rotating plate that extends from the mounting body,
In the rotating plate,
A pivoted portion that pivotally supports the pivot pin;
A transporting carriage characterized in that a guide groove for guiding the guide pin is formed.
前記連結フレームは、前記前車輪側支持部材を上下方向に移動可能に案内する案内部を有することを特徴とする請求項1に記載の運搬用台車。   The said connection frame has a guide part which guides the said front wheel side support member so that a movement to an up-down direction is possible, The trolley | bogie for conveyance of Claim 1 characterized by the above-mentioned. 前記ガイド溝は、前記載置体が略水平状態において略水平方向に延在していることを特徴とする請求項1又は2に記載の運搬用台車。   The transporting carriage according to claim 1, wherein the guide groove extends in a substantially horizontal direction when the mounting body is in a substantially horizontal state. 前記ガイド溝は、湾曲形状であることを特徴とする請求項1乃至3のいずれかに記載の運搬用台車。   The transporting carriage according to claim 1, wherein the guide groove has a curved shape. 前記湾曲形状は、前記載置体が略水平状態において下方に凸であることを特徴とする請求項1乃至4のいずれかに記載の運搬用台車。   The carriage according to any one of claims 1 to 4, wherein the curved shape is such that the mounting body protrudes downward in a substantially horizontal state. 前記連結フレームの端部には前記前車輪側支持部材の支柱に遊嵌された筒状部が設けられており、前記筒状部には前記枢動ピンが貫通する長孔が形成されていることを特徴とする請求項1乃至5のいずれかに記載の運搬用台車。   A cylindrical portion loosely fitted on the support column of the front wheel side support member is provided at an end portion of the connection frame, and a long hole through which the pivot pin passes is formed in the cylindrical portion. The carriage for transportation according to any one of claims 1 to 5. 前車輪と、
前記前車輪が取り付けられた前車輪側支持部材と、
後車輪と、
前記前車輪と前記後車輪との中間部に配置される中間車輪と、
前記後車輪及び前記中間車輪が取り付けられ、前記前車輪側支持部材に対して相対的に上下方向に移動可能な連結フレームと、
前記連結フレーム上に支持される載置体とを備え、
前記載置体を略水平状態から略鉛直状態に回動させる動作に応じて前記中間車輪を、前記前車輪よりも上方に位置させる昇降機構を備える運搬用台車であって、
前記昇降機構は、
前記前車輪側支持部材の左右方向から突出するガイドピンと、
前記連結フレームの左右方向から突出する枢動ピンと、
前記載置体から延出する回動プレートとから構成され、
前記回動プレートには、
前記枢動ピンを軸支する被枢動部と、
前記ガイドピンをガイドするガイド溝とが形成されている
ことを特徴とする運搬用台車。
Front wheels,
A front wheel side support member to which the front wheel is attached;
The rear wheels,
An intermediate wheel disposed in an intermediate portion between the front wheel and the rear wheel;
A connecting frame to which the rear wheel and the intermediate wheel are attached, and movable in a vertical direction relative to the front wheel side support member;
A mounting body supported on the connection frame,
A transporting carriage including a lifting mechanism for positioning the intermediate wheel above the front wheel according to an operation of rotating the mounting body from a substantially horizontal state to a substantially vertical state;
The lifting mechanism is
A guide pin protruding from the left-right direction of the front wheel side support member;
A pivot pin protruding from the left-right direction of the connecting frame;
It consists of a rotating plate that extends from the mounting body,
In the rotating plate,
A pivoted portion that pivotally supports the pivot pin;
A transporting carriage characterized in that a guide groove for guiding the guide pin is formed.
JP2016028844A 2016-02-18 2016-02-18 Transport trolley Expired - Fee Related JP6645863B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11453427B2 (en) * 2020-03-27 2022-09-27 Telefonaktiebolaget Lm Ericsson (Publ) Handling device for transporting components of a checkout station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11453427B2 (en) * 2020-03-27 2022-09-27 Telefonaktiebolaget Lm Ericsson (Publ) Handling device for transporting components of a checkout station

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