JP3400693B2 - Transport pallets - Google Patents
Transport palletsInfo
- Publication number
- JP3400693B2 JP3400693B2 JP32476097A JP32476097A JP3400693B2 JP 3400693 B2 JP3400693 B2 JP 3400693B2 JP 32476097 A JP32476097 A JP 32476097A JP 32476097 A JP32476097 A JP 32476097A JP 3400693 B2 JP3400693 B2 JP 3400693B2
- Authority
- JP
- Japan
- Prior art keywords
- pallet
- fork
- deck boards
- crosspieces
- sides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Pallets (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、合成樹脂の一体成
形により形成された運搬用パレットに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transportation pallet formed by integral molding of synthetic resin.
【０００２】[0002]
【従来の技術】従来から合成樹脂の一体成形により形成
されたパレットが実公平２ー７７９１号公報などにより
知られている。この実公平２ー７７９１号公報に示され
たパレットは、表裏両側のデッキボードが複数個の筒状
桁により連結されると共に筒状桁間にフォーク挿入孔が
形成された合成樹脂により一体成形されたものである。
すなわち、従来のパレット５においてフォーク挿入孔４
は図１０に示すような構成となっており、このフォーク
挿入孔４を金型で成形するには、図１１に示すようにフ
ォーク挿入孔４の入口部分は、上金型６、下金型７、側
金型１９により成形し、表面側のデッキボード１しかな
い箇所は上金型６、下金型７によって成形し、表裏両側
にデッキボード１、２が存在する箇所は上下金型６、７
によって成形していた。図１１において矢印イは上金型
６の型開き方向を示し、矢印ロは下金型７の型開き方向
を示し、矢印ハは側金型１９の型抜き方向を示してい
る。2. Description of the Related Art Conventionally, a pallet formed by integral molding of synthetic resin is known from Japanese Utility Model Publication No. 2-7791. The pallet disclosed in Japanese Utility Model Publication No. 2-7791 is integrally formed of synthetic resin in which deck boards on both front and back sides are connected by a plurality of tubular girders and fork insertion holes are formed between the tubular girders. It is a thing.
That is, in the conventional pallet 5, the fork insertion hole 4
10 has a structure as shown in FIG. 10. To mold the fork insertion hole 4 with a die, as shown in FIG. 11, the inlet portion of the fork insertion hole 4 has an upper die 6 and a lower die. 7, the side mold 19 is formed, and the part having only the deck board 1 on the front side is formed by the upper mold 6 and the lower mold 7, and the parts having the deck boards 1 and 2 on the front and back sides are the upper and lower molds 6, respectively. , 7
Had been molded by. In FIG. 11, arrow a indicates the mold opening direction of the upper mold 6, arrow b indicates the mold opening direction of the lower mold 7, and arrow c indicates the mold removing direction of the side mold 19.
【０００３】ここで、表裏両側にデッキボード１、２が
存在する箇所を上下金型６、７によってのみ成形するに
は、表裏両側のデッキボード１、２の桟が上下に重なら
ないように位置をずらせて成形する必要がある。ところ
が、このように表裏両側にデッキボード１、２が存在す
る箇所を上下金型６、７によってのみ成形する際、この
箇所を成形するための上下金型６、７の型部分はそれぞ
れ下の桟の一部及び上の桟の一部を形成するために上下
金型６、７の他の箇所を形成する型部分よりも上下長さ
が長くなり且つ加工が複雑となり、金型強度が弱くなる
傾向にある。したがって、金型のこの部分はできるだけ
シンプルな形状とする必要があり、この結果、従来にあ
っては表裏のデッキボード１、２の他の箇所にはフォー
クの幅よりも狭いピッチの格子状の桟１２を成形するの
に対し、表裏両側のデッキボード１、２の部分を上下金
型６、７によってのみ成形する箇所においては、フォー
クの挿入方向と交差する桟をフォークの幅よりも長い横
長桟９とする必要があり、上下金型６、７の強度、コス
トの問題で格子状に形成することができない。Here, in order to form the places where the deck boards 1 and 2 are present on the front and back sides only by the upper and lower molds 6 and 7, the deck boards 1 and 2 on the front and back sides are positioned so that they do not overlap vertically. It is necessary to shift and mold. However, when molding the places where the deck boards 1 and 2 are present on the front and back sides only by the upper and lower molds 6 and 7, the mold parts of the upper and lower molds 6 and 7 for molding these places are located below. In order to form a part of the crosspiece and a part of the upper crosspiece, the vertical length is longer than that of the mold forming the other parts of the upper and lower molds 6 and 7, the processing is complicated, and the mold strength is weak. Tends to become. Therefore, it is necessary to make this portion of the mold as simple as possible, and as a result, in the conventional case, other portions of the deck boards 1 and 2 on the front and back sides are formed in a lattice shape having a pitch narrower than the width of the fork. In contrast to the case where the crosspiece 12 is formed, in a place where the deck boards 1 and 2 on both front and back sides are formed only by the upper and lower molds 6 and 7, the crosspiece that intersects the fork insertion direction is longer than the width of the fork. Since it is necessary to form the crosspiece 9, it cannot be formed in a lattice shape due to the problems of strength and cost of the upper and lower molds 6 and 7.
【０００４】しかして、従来にあっては、図１０に示す
ようにフォーク挿入方向と交差する表面側のデッキボー
ド１に形成された横長桟９は裏面側に開口する断面逆Ｕ
字状をしていた。However, in the prior art, as shown in FIG. 10, the horizontally long crosspiece 9 formed on the deck board 1 on the front side intersecting the fork insertion direction has an inverted U-shaped cross section opening to the rear side.
It had a letter shape.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記のよう
な従来例にあっては、フォーク挿入方向と交差するフォ
ークの幅よりも長い横長桟９は裏面側に開口する断面逆
Ｕ字状をしているため、フォーク挿入孔４内にフォーク
を挿入する際にフォークの先端が断面逆Ｕ字状をした横
長桟９の自由端となった側片の下端部に当たってこの部
分を破損しやすいという問題がある。However, in the conventional example as described above, the horizontally long crosspiece 9 which is longer than the width of the fork intersecting the fork insertion direction has an inverted U-shaped cross-section which opens to the rear surface side. Therefore, when the fork is inserted into the fork insertion hole 4, the tip of the fork easily hits the lower end of the side piece that is the free end of the horizontally long bar 9 having an inverted U-shaped cross section, and this portion is easily damaged. There is.
【０００６】また、従来にあっては、パレットの四隅部
分に位置する筒状桁の外隅側の端部においては、裏面側
に開口し且つ表面側が閉塞部により閉塞された裏面側凹
部のみを設けてある。ところが、パレットを接地したり
積み重ねたりする場合パレットの隅部下面が地面に最初
に接地されたり他の物に衝突したりするようなことがあ
り、このような場合にはパレットの隅部下面が破損しや
すいが、従来にあっては、パレットの四隅部分に位置す
る筒状桁の外隅側の端部には裏面側に開口し且つ表面側
が閉塞部により閉塞された裏面側凹部が形成してあるの
で、隅部の下面における耐衝撃強度が弱く、この部分が
破損しやすいという問題がある。Further, in the prior art, at the outer corner side end portions of the tubular girders located at the four corners of the pallet, only the back surface side recesses which are open to the back surface side and whose front surface side is closed by the closing parts are formed. It is provided. However, when the pallets are grounded or stacked, the bottom surface of the corners of the pallet may first come into contact with the ground or collide with another object. It is easy to break, but in the past, the back side recesses were formed at the outer corner side ends of the cylindrical girders located at the four corners of the pallet, the back side opening and the front side being closed by the closing parts. Therefore, there is a problem that the impact resistance strength on the lower surface of the corner is weak and this part is easily damaged.
【０００７】本発明は上記の従来例の問題点に鑑みて発
明したものであって、フォークの幅よりも長い横長桟の
下部にフォークの先端部が衝突しても横長桟が破損する
のを防止することができ、また、隅部において上下両面
をバランス良く補強できて、隅部の破損を防止すること
ができる運搬用パレットを提供することを課題とするも
のである。The present invention has been made in view of the above-mentioned problems of the prior art, and prevents the horizontal rail from being damaged even if the tip of the fork collides with the lower portion of the horizontal rail that is longer than the width of the fork. It is an object of the present invention to provide a transportation pallet that can be prevented and can prevent damage to the corners by reinforcing the upper and lower surfaces of the corners in a well-balanced manner.
【０００８】[0008]
【課題を解決するための手段】上記本発明の課題を達成
するために、本発明の運搬用パレットは、表裏両側のデ
ッキボード１、２が複数個の筒状桁３により連結される
と共に筒状桁３間にフォーク挿入孔４が形成された合成
樹脂により一体成形されたパレット５において、フォー
ク挿入孔４部分の表裏両側にデッキボード１、２が存在
し且つ上下金型６、７によってのみ表裏両側のデッキボ
ード１、２が成形される箇所において表裏両側のデッキ
ボード１、２にフォーク８の挿入方向と交差する方向に
延びたフォーク８の幅よりも長い横長桟９が上下に重な
らないように位置をずらせて形成され、このフォーク挿
入方向と交差する表面側のデッキボード１に形成された
横長桟９は下横片１０と下横片１０の両側端から表面側
に向けて突出する両側片１１とで構成されたＵ字状を
し、フォーク挿入孔４部分の上記表裏両側にデッキボー
ド１、２が存在し且つ上下金型６、７によってのみ表裏
両側のデッキボード１、２が成形される箇所以外の部分
の表面側や裏面側のデッキボード１、２に格子状の桟１
２を形成し、この格子状の桟１２のうち横長桟９と交差
する桟のピッチをフォーク８の幅より短くし、上記Ｕ字
状の横長桟９のうち格子状の桟１２と交差している側片
１１を除いた側片１１と下横片１０とのなすコーナ部分
を斜めに傾斜した傾斜面１３として成ることを特徴とす
るものである。このような構成を採用することで、フォ
ーク挿入孔４にフォーク８を挿入した場合、表面側のデ
ッキボード１の格子状の桟１２を設けた部分において
は、格子状の桟１２のうち横長桟９と交差する桟のピッ
チをフォーク８の幅より短くしてあることで、フォーク
８の先端部が格子状の桟１２の下端部に引っ掛かること
なく挿入でき、また、表面側のデッキボード１の横長桟
９のみが存在する部位においては、横長桟９がフォーク
８の幅よりも長いので横長桟９の下端部にフォーク８の
先端部が当たることがあるが、この場合、傾斜面１３に
よりガイドされてフォーク８が横長桟９の下横片１０に
沿って前方にスムーズに進むことができ、また、横長桟
９がＵ字状をしていることで、下端部に当たっても下横
桟１０により補強できて、横長桟９の破損を防止するこ
とができるものである。In order to achieve the above-mentioned object of the present invention, the carrying pallet of the present invention has a structure in which deck boards 1 and 2 on both front and back sides are connected by a plurality of cylindrical girders 3 and a cylinder. In a pallet 5 integrally formed of a synthetic resin in which fork insertion holes 4 are formed between the beam girders 3, there are deck boards 1 and 2 on both front and back sides of the fork insertion holes 4 and only by upper and lower molds 6 and 7. At the locations where the deck boards 1 and 2 on both sides are formed, the horizontally long rails 9 extending in the direction intersecting the insertion direction of the forks 8 on the deck boards 1 and 2 on both sides do not overlap vertically. The laterally elongated crosspieces 9 formed on the deck board 1 on the front surface side, which are formed by shifting the positions as described above, intersect the fork insertion direction, and project toward the front surface from both side ends of the lower horizontal piece 10 and the lower horizontal piece 10. It has a U-shape composed of side pieces 11, and there are deck boards 1 and 2 on both sides of the fork insertion hole 4 and the deck boards 1 and 2 on both sides are formed only by upper and lower molds 6 and 7. Lattice bars 1 on the deck boards 1 and 2 on the front and back sides other than the parts to be molded
2 is formed, and the pitch of the cross-shaped crosspieces 12 crossing the horizontally long crosspieces 9 is made shorter than the width of the fork 8 so as to cross the grid-like crosspieces 12 of the U-shaped horizontal crosspieces 9. The corner portion formed by the side piece 11 and the lower horizontal piece 10 excluding the side piece 11 present is formed as an inclined surface 13 that is obliquely inclined. By adopting such a configuration, when the fork 8 is inserted into the fork insertion hole 4, in the portion of the deck board 1 on the front surface side where the grid-like crosspieces 12 are provided, the horizontally long crosspieces of the grid-like crosspieces 12 are provided. Since the pitch of the crosspieces that intersect with 9 is shorter than the width of the fork 8, the tip of the fork 8 can be inserted without being caught by the lower end of the grid-shaped crosspieces 12, and the deck board 1 on the front side can be inserted. In the region where only the horizontal crosspiece 9 exists, the tip of the fork 8 may hit the lower end of the horizontal crosspiece 9 because the horizontal crosspiece 9 is longer than the width of the fork 8. In this case, the inclined surface 13 guides the guide. As a result, the fork 8 can smoothly move forward along the lower horizontal piece 10 of the horizontally long rail 9, and because the horizontally long rail 9 has a U-shape, even if it hits the lower end, Can be reinforced and is a horizontal crosspiece 9 Damage are those that can be prevented.
【０００９】また、パレット５の四隅部分に位置する筒
状桁３の外隅側の端部に表面側に開口し且つ裏面側が閉
塞部１４により閉塞された表面側凹部１５と裏面側に開
口し且つ表面側が閉塞部１６により閉塞された裏面側凹
部１７とをパレット５の対角線を境に隣接して配置して
あることが好ましい。このような構成とすることで、パ
レット５を接地したり積み重ねたりする場合パレット５
の隅部下面が地面に最初に接地されたり他の物に衝突し
たりするようなことがあってもパレット５の隅部下面が
破損しにくく、また、隅部の表裏両面部をバランス良く
補強できるものである。Further, the outer side of the cylindrical girder 3 located at the four corners of the pallet 5 is open to the front side and the rear side is closed to the front side concave portion 15 and the rear side. Further, it is preferable that the front surface side and the back surface side recessed portion 17 closed by the closing portion 16 are arranged adjacent to each other with the diagonal line of the pallet 5 as a boundary. With such a configuration, when the pallets 5 are grounded or stacked, the pallets 5
The bottom surface of the corner of the pallet 5 is less likely to be damaged even if the bottom surface of the corner of the pallet is first contacted with the ground or collides with another object, and the front and back surfaces of the corner are reinforced with good balance. It is possible.
【００１０】[0010]
【発明の実施の形態】以下、図１乃至図９に基づいて本
発明の一実施形態につき説明する。図１乃至図５に示す
ように、パレット５は合成樹脂の射出成形により一体に
形成してあって平面視四角形状をしており、表面側のデ
ッキボード１と、裏面側のデッキボード２と、表裏両側
のデッキボード１、２を一体に連結する複数個の筒状桁
３により主体が構成してある。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 5, the pallet 5 is integrally formed by injection molding of synthetic resin and has a quadrangular shape in a plan view, and includes a deck board 1 on the front surface side and a deck board 2 on the back surface side. The main body is composed of a plurality of tubular girders 3 that integrally connect the deck boards 1 and 2 on both front and back sides.
【００１１】添付図面に示す実施形態においては、平面
視四角形状をしたパレット５の四隅部と、中央部と、前
後左右の４辺の各中間部との合計９箇所に筒状桁３を配
設して表裏両側のデッキボード１、２を一体に連結して
ある例が示してあり、筒状桁３間にフォーク挿入孔４が
形成してあり、添付図面に示す実施形態においては前後
左右の４方向にフォーク挿入孔４が形成してある。In the embodiment shown in the accompanying drawings, the tubular girders 3 are arranged at a total of 9 positions, that is, four corners of a pallet 5 having a quadrangular shape in a plan view, a central part, and intermediate parts of the four front, rear, left and right sides. An example in which the deck boards 1 and 2 on both front and back sides are integrally connected is shown, and a fork insertion hole 4 is formed between the tubular girders 3. In the embodiment shown in the accompanying drawings, Fork insertion holes 4 are formed in four directions.
【００１２】表裏両面のデッキボード１、２には桟が形
成してある。また、裏面側のデッキボード２には複数の
開口部１８が形成してある。ここで、パレット５は合成
樹脂の射出成形により一体に形成されるのであるが、図
６に示すように、形成されるパレット５のフォーク挿入
孔４の入口部分のみが上金型６、下金型７、側金型１９
により成形され、他の部分は上金型６、下金型７によっ
て成形されるようになっている。すなわち、図６におい
て開口部１８においては表面側のデッキボード１の開口
部１８に対向する部位のみが上金型６と下金型７とによ
り成形され、また、フォーク挿入孔４の入口以外の部分
で上記開口部１８が存在しない箇所においては表裏両側
にデッキボード１、２が存在するが、この部分も上下金
型６、７によってのみ表裏両側のデッキボード１、２が
成形されるものである。図６において矢印イは上金型６
の型開き方向を示し、矢印ロは下金型７の型開き方向を
示し、矢印ハは側金型８の型開き方向を示している。こ
こで、図６において１９ａは側金型１９に組み込まれた
サブ金型で、側金型１９に対して出没自在に設けてあっ
て型締め時に側金型１９から突出してアンダーカット部
を成形するための金型となる。また、筒状桁３部分も上
金型６と下金型７とによってのみ形成されるものであ
る。図６において９′は横長桟９を成形するためのキャ
ビティ部分を示し、１２′は格子状の桟１２を成形する
ためのキャビティ部分を示している。Crosspieces are formed on the deck boards 1 and 2 on both the front and back sides. Further, a plurality of openings 18 are formed in the deck board 2 on the back side. Here, the pallet 5 is integrally formed by injection molding of synthetic resin, but as shown in FIG. 6, only the inlet portion of the fork insertion hole 4 of the pallet 5 formed is the upper die 6 and the lower die. Mold 7, side mold 19
And the other parts are molded by the upper mold 6 and the lower mold 7. That is, in FIG. 6, in the opening 18, only a portion of the front side facing the opening 18 of the deck board 1 is molded by the upper mold 6 and the lower mold 7, and other than the entrance of the fork insertion hole 4. Deck boards 1 and 2 exist on both front and back sides in a portion where the above-mentioned opening 18 does not exist, but in this portion, the deck boards 1 and 2 on both front and back sides are molded only by the upper and lower molds 6 and 7. is there. In FIG. 6, the arrow a indicates the upper die 6.
The arrow B indicates the mold opening direction of the lower mold 7, and the arrow C indicates the mold opening direction of the side mold 8. Here, in FIG. 6, reference numeral 19a denotes a sub metal mold incorporated in the side metal mold 19, which is provided so as to be retractable from the side metal mold 19 and protrudes from the side metal mold 19 during mold clamping to form an undercut portion. It becomes a mold for doing. The cylindrical girder 3 portion is also formed only by the upper mold 6 and the lower mold 7. In FIG. 6, 9'indicates a cavity portion for forming the horizontally long crosspiece 9, and 12 'indicates a cavity portion for forming the grid-like crosspiece 12.
【００１３】このように、フォーク挿入孔４の表裏両側
のデッキボード１、２を上下金型６、７でのみ成形する
箇所においては、表面側の桟と裏面側の桟とが上下に重
ならないように位置をずらせて形成してあって、これに
より上下金型６、７により表面側のデッキボード１と裏
面側のデッキボード２とを成形できるようになってい
る。ところで、上記のように表裏両側にデッキボード
１、２が存在する箇所を上下金型６、７によってのみ成
形する際、この箇所を成形するための上下金型６、７の
型部分はそれぞれ下の桟の一部及び上の桟一部を形成す
るために上下金型の他の箇所を形成する型部分よりも上
下長さが長くなり且つ加工が複雑となり、金型強度が弱
くなる傾向にある。したがって、金型のこの部分はでき
るだけシンプルな形状とする必要がある。このため、こ
の部分において形成される桟は格子状の小さく分割され
た複雑な形状の桟ではなく、フォーク挿入孔４の挿入方
向に直交する横方向に長い横長桟９となっていてフォー
ク８の幅よりも長さが長い（添付図面に示す実施形態で
は筒状桁３間にわたる長さの長い）ものとなっている。In this way, in the places where the deck boards 1 and 2 on both the front and back sides of the fork insertion hole 4 are molded only by the upper and lower molds 6 and 7, the front side rail and the back side rail do not vertically overlap. As described above, the upper and lower dies 6 and 7 can be used to form the deck board 1 on the front surface side and the deck board 2 on the back surface side. By the way, when molding the places where the deck boards 1 and 2 are present on the front and back sides only by the upper and lower molds 6 and 7 as described above, the mold portions of the upper and lower molds 6 and 7 for molding these places are respectively lower. The upper and lower dies are formed to form part of the upper ridge and the upper ridge, and the vertical length is longer than that of the mold part that forms the other parts of the upper and lower dies, and the processing becomes complicated, and the mold strength tends to be weak. is there. Therefore, this part of the mold should be as simple as possible. Therefore, the crosspiece formed in this portion is not a grid-shaped small divided complicated crosspiece, but is a horizontally long crosspiece 9 that is long in the lateral direction orthogonal to the insertion direction of the fork insertion hole 4 and is formed of the fork 8. The length is longer than the width (in the embodiment shown in the accompanying drawings, the length between the tubular girders 3 is long).
【００１４】一方、フォーク挿入孔４の入口部分におい
ては上金型６、下金型７、側金型１９により表裏両面の
デッキボード１、２が成形されるので、この部分におい
ては上下金型６、７の形状を複雑な形状としても金型の
強度上の問題もなく、また加工もしやすいので、この部
分における表面両面のデッキボード１、２には格子状の
桟１２が形成され、この格子状の桟１２の桟間のピッチ
も短くでき、したがって、格子状の桟１２のうち横長桟
９と交差する桟のピッチはフォーク８の幅より短くして
ある。また、開口部１８に対向する表面側のデッキボー
ド１の部位も上金型６と下金型７とにより成形される
が、この部分においては表面側のデッキボード１のみを
成形するものであり、この部分においは上下金型６、７
の形状を複雑な形状としても金型の強度上の問題もな
く、また加工もしやすいので、この部分における表面両
面のデッキボード１には格子状の桟１２が形成され、こ
の格子状の桟１２の桟間のピッチも短くでき、したがっ
て、格子状の桟１２のうち横長桟９と交差する桟のピッ
チはフォーク８の幅より短くしてある。On the other hand, at the entrance of the fork insertion hole 4, the upper mold 6, the lower mold 7, and the side mold 19 mold the deck boards 1 and 2 on both the front and back sides. Even if the shapes of 6 and 7 are complicated, there is no problem in the strength of the mold and it is easy to process. Therefore, the deck boards 1 and 2 on both sides of the surface in this portion are formed with the grid-shaped bars 12. The pitch between the bars of the grid-shaped bars 12 can be shortened. Therefore, the pitch of the bars of the grid-shaped bars 12 that intersect the horizontally long bars 9 is shorter than the width of the forks 8. Further, the portion of the deck board 1 on the surface side facing the opening 18 is also molded by the upper mold 6 and the lower mold 7, but in this part, only the deck board 1 on the surface side is molded. , This part smells up and down mold 6,7
Even if the shape is complicated, there is no problem in the strength of the mold and it is easy to process, so that the deck boards 1 on both sides of the surface in this portion are formed with the grid-shaped crosspieces 12. The pitch between the crosspieces can be shortened. Therefore, the pitch of the crosspieces of the grid-like crosspieces 12 that intersect the horizontally long crosspieces 9 is shorter than the width of the forks 8.
【００１５】横長桟９のうち表面側のデッキボード１に
形成された横長桟９は下横片１０と下横片１０の両側端
から表面側に向けて突出する両側片１１とで構成された
Ｕ字状をしている。ここで、横長桟９はフォーク挿入孔
４のフォーク挿入方向において、添付図面においては隙
間を介して４列設けてあり、両側の横長桟９の外側の側
片１１には格子状の桟１２のフォーク挿入方向と平行な
桟の端部が一体に連続しているものである。そして、上
記両側の横長桟９の両側片１１のうち格子状の桟１２と
一体に連続していない他の側片１１と下横片１０とのな
すコーナ部分及び、両側以外の他の横長桟９の両側片１
１と下横片１０とのなすコーナ部分を斜めに傾斜させて
傾斜面１３が形成してある。Of the horizontally long bars 9, the horizontally long bars 9 formed on the deck board 1 on the front surface side are composed of a lower horizontal piece 10 and both side pieces 11 protruding from both ends of the lower horizontal piece 10 toward the front side. It has a U shape. Here, in the attached drawing, four lateral rows 9 are provided in the fork insertion direction of the fork insertion hole 4 with a gap therebetween, and the lateral bars 11 on both sides are provided with grid-shaped bars 12. The end of the crosspiece parallel to the fork insertion direction is integrally continuous. Then, of the both side pieces 11 of the laterally long crosspieces 9 on both sides, a corner portion formed by the other lateral piece 11 and the lower horizontal piece 10 which are not integrally continuous with the grid-shaped crosspieces 12 and other laterally long crosspieces other than both sides are formed. 9 side pieces 1
An inclined surface 13 is formed by obliquely inclining a corner portion formed by 1 and the lower horizontal piece 10.
【００１６】しかして、パレット５のフォーク挿入孔４
にフォーク８を挿入する場合、フォーク８の先端がフォ
ーク挿入孔４の表面側のデッキボード１の下面側に当た
りながら挿入されることがあるが、この場合、格子状の
桟１２部分においては、格子状の桟１２のうち横長桟９
と交差する桟（つまりフォーク挿入方向と同方向の桟）
のピッチをフォーク８の幅より短くしてあるので、格子
状の桟１２のうちフォーク挿入方向と交差する方向の桟
のフォーク挿入口側に対向した面に当たることがなくス
ムーズに格子状の桟１２の下面を滑るようにして奥に挿
入できるものである。Then, the fork insertion hole 4 of the pallet 5
When the fork 8 is inserted into the fork, the tip of the fork 8 may be inserted while hitting the lower surface side of the deck board 1 on the front surface side of the fork insertion hole 4, but in this case, in the grid-shaped crosspiece 12 part, 9 of the horizontal bars 12
Crosspiece that intersects with (that is, crosspiece in the same direction as the fork insertion direction)
Since the pitch of the bars is shorter than the width of the fork 8, the grid bars 12 do not hit the surface of the bars crossing the fork insertion direction facing the fork insertion port side, and the grid bars 12 smoothly. It can be inserted in the back by sliding the bottom surface of.
【００１７】また、横長桟９部分においては、すでに述
べたように横長桟９がフォーク８の幅よりも長いので、
横長桟９のフォーク挿入口側に対向した面（つまり側片
１１）の下端部にフォーク８の先端部が図７に示すよう
に当たることがあるが、この場合、側片１１と下横片１
０とのなすコーナ部分が傾斜面１３となっているので、
フォーク８の先端はこの傾斜面１３に当たることにな
り、傾斜面１３にガイドされて下横片１０の下面側に滑
って進み、これによりスムーズに奥に挿入されるもので
ある。この時、側片１１の下端部である傾斜面１３にフ
ォーク８の先端が当たっても、傾斜面１３によりフォー
ク８の先端が滑ることと、側片１１の下端が下横片１０
に一体に連続してあって横長桟９がＵ字状をしていて補
強してあることで、側片１１の破損を防止するようにな
っている。Further, in the laterally long crosspiece 9 portion, since the laterally long crosspiece 9 is longer than the width of the fork 8 as described above,
The tip of the fork 8 may hit the lower end of the surface (that is, the side piece 11) of the horizontally long crosspiece 9 facing the fork insertion port side as shown in FIG. 7, but in this case, the side piece 11 and the lower horizontal piece 1
Since the corner part formed with 0 is the inclined surface 13,
The tip of the fork 8 comes into contact with the inclined surface 13, is guided by the inclined surface 13 and slides toward the lower surface side of the lower horizontal piece 10 to be smoothly inserted into the back. At this time, even if the tip of the fork 8 hits the inclined surface 13 which is the lower end of the side piece 11, the tip of the fork 8 slides due to the inclined surface 13 and the lower end of the side piece 11 moves downward.
The laterally long crosspiece 9 has a U-shape and is reinforced so as to prevent the side piece 11 from being damaged.
【００１８】なお、上記した実施形態においては、裏面
側のデッキボード２に開口部１８を形成した例を示した
が、開口部１８を設けなくてもよいものである。この場
合には、表裏両面のデッキボード１、２を上金型６と下
金型７とで成形するため、この部分に形成する桟として
は格子状の桟１２とせず、横長桟９とするものである。In the above-described embodiment, the example in which the opening 18 is formed in the deck board 2 on the back surface side is shown, but the opening 18 may not be provided. In this case, since the deck boards 1 and 2 on both the front and back sides are molded by the upper mold 6 and the lower mold 7, the crosspieces formed in this portion are not the grid-like crosspieces 12 but the horizontally long crosspieces 9. It is a thing.
【００１９】また、添付図面に示す実施形態では表面側
に位置する横長桟９を下横片１０と下横片１０の両側端
から表面側に向けて突出する両側片１１とで構成された
Ｕ字状に形成し、側片１１と下横片１０とのなすコーナ
部分に傾斜面１３を形成した例を示したが、裏面側の横
長桟９を上横片と上横片の両側端から裏面側に向けて突
出する両側片とで構成された逆Ｕ字状とし、この逆Ｕ字
状の裏面側の側片と上横片とのなすコーナ部分を斜めに
傾斜した傾斜面とすることで、パレット１を表裏逆にし
て使用しても、フォーク８の先端が新たに表面側となっ
た横長桟９の側片の下端に当たっても前述と同様の理由
で傾斜面によりガイドされて奥側にスムーズに挿入でき
るようにし、またこの部分の破損を防止することができ
るものである。In the embodiment shown in the accompanying drawings, a U-shaped crosspiece 9 located on the surface side is composed of a lower horizontal piece 10 and two side pieces 11 projecting from both side ends of the lower horizontal piece 10 toward the front side. An example is shown in which the inclined surface 13 is formed in a corner shape formed by the side piece 11 and the lower horizontal piece 10 in the shape of a letter, but the horizontally long crosspieces 9 on the back surface side are provided from both ends of the upper horizontal piece and the upper horizontal piece. An inverted U-shape composed of both side pieces protruding toward the back side, and a corner portion formed by the side piece on the back side of the inverted U-shape and the upper horizontal piece is an inclined surface inclined obliquely. Thus, even if the pallet 1 is used upside down, even if the tip of the fork 8 hits the lower end of the side piece of the horizontally long crosspiece 9 that is newly on the front side, it is guided by the inclined surface for the same reason as described above and the back side It is possible to smoothly insert into this and to prevent damage to this part.
【００２０】また、パレット１の四隅に形成される筒状
桁３の外隅側の端部に表面側に開口し且つ裏面側が閉塞
部１４により閉塞された平面視三角形状をした表面側凹
部１５と裏面側に開口し且つ表面側が閉塞部１６により
閉塞された平面視三角形状をした裏面側凹部１７とがパ
レット５の対角線を境に隣接して配置してある。ここ
で、上記パレット５の各対角上に位置する表面側凹部１
５が平面視においてパレット５の中心部を中心にした点
対称となり且つパレット５の各対角上に位置する裏面側
凹部１７が平面視においてパレット５の中心部を中心に
した点対称となっている。図８には表面側凹部１５と裏
面側凹部１７とが隣接する箇所の拡大断面図が示してあ
り、図９にはこの部分の斜視図が示してある。表面側凹
部１５と裏面側凹部１７との壁面は垂直リブ３０とパレ
ット１の外壁片３１により構成してあり、表面側凹部１
５と裏面側凹部１７との境の壁面は共通の垂直リブ３０
により形成してあり、表面側凹部１５は上記垂直リブ３
０と外壁片３１と裏面側の閉塞部１４とが一体化したも
ので、裏面側の強度が強く、また、裏面側凹部１７は上
記垂直リブ３０と外壁片３１と表面側の閉塞部１６とが
一体化したもので、表面側の強度が強く、このように裏
面側の強度が強いものと、表面側の強度が強いものとを
パレット１の四隅に形成される各筒状桁３の外隅側の端
部にパレット５の対角線を境に隣接して配置すること
で、パレット１の外隅側端部（つまり隅部の最端部）の
表面側と裏面側とをバランス良く補強してある。Further, a front surface side concave portion 15 having a triangular shape in plan view, which is open to the front surface side at the outer corner side ends of the cylindrical girders 3 formed at the four corners of the pallet 1 and is closed at the rear surface side by the closing portion 14. And a rear surface side concave portion 17 having a triangular shape in plan view, which is open to the rear surface side and closed on the front surface side by the closing portion 16, are arranged adjacent to each other with a diagonal line of the pallet 5 as a boundary. Here, the front surface side recesses 1 located on the diagonals of the pallet 5 are provided.
5 is point-symmetrical about the center of the pallet 5 in plan view, and the back-side concave portions 17 located on the diagonals of the pallet 5 are point-symmetrical about the center of the pallet 5 in plan view. There is. FIG. 8 shows an enlarged sectional view of a portion where the front surface side concave portion 15 and the rear surface side concave portion 17 are adjacent to each other, and FIG. 9 shows a perspective view of this portion. The wall surfaces of the front surface side concave portion 15 and the rear surface side concave portion 17 are constituted by the vertical ribs 30 and the outer wall pieces 31 of the pallet 1.
5 and the rear surface side recess 17 have a common vertical rib 30 on the wall surface.
And the front side concave portion 15 is formed by
0, the outer wall piece 31, and the back surface side closed portion 14 are integrated, and the back surface side has a high strength, and the back surface side recess 17 includes the vertical rib 30, the outer wall piece 31, and the front surface side closed portion 16. Of the cylindrical girders 3 formed at the four corners of the pallet 1 with the strength of the front side being strong and the strength of the back side being strong and the strength being the front side being strong. By arranging the pallet 5 adjacent to each other on the corner side with the diagonal line of the pallet 5 as a boundary, the front side and the back side of the outer corner side of the pallet 1 (that is, the outermost edge of the corner) are reinforced in good balance. There is.
【００２１】したがって、従来のように、筒状桁３の外
隅側の端部に裏面側が開口した表面側凹部１５のみを形
成したものに比べて、パレット１の隅部の下面の補強が
できて、この部分が他の物に衝突した際における破損を
防止することができるようにしている。また、パレット
５の各対角上に位置する表面側凹部１５が平面視におい
てパレット５の中心部を中心にした点対称となり且つパ
レット５の各対角上に位置する裏面側凹部１７が平面視
においてパレット５の中心部を中心にした点対称となっ
ていることで、よりいっそうパレット１の四隅の各外隅
部分の表裏面を全体としてバランス良く補強できるもの
である。また、パレット５を表裏逆にして使用した場合
も同様に新たに裏面となる箇所の補強ができるものであ
る。Therefore, the lower surface of the corner portion of the pallet 1 can be reinforced as compared with the conventional one in which only the front surface side concave portion 15 having the rear surface side opening is formed at the outer corner side end portion of the cylindrical girder 3. Therefore, it is possible to prevent damage when this portion collides with another object. Further, the front surface side concave portions 15 located on the diagonals of the pallet 5 are point-symmetrical with respect to the center of the pallet 5 in a plan view, and the rear surface side concave portions 17 located on the diagonals of the pallet 5 are viewed in a plan view. The point symmetry with respect to the center of the pallet 5 makes it possible to reinforce the front and back surfaces of the outer corners of the four corners of the pallet 1 as a whole with good balance. Also, when the pallet 5 is used upside down, the new back surface can be reinforced in the same manner.
【００２２】なお、パレット５の前後左右の各辺の中間
部においても、表面側に開口し且つ裏面側が閉塞部によ
り閉塞された表面側凹部と裏面側に開口し且つ表面側が
閉塞部により閉塞された裏面側凹部とをパレット５の前
後方向の中心線又は左右方向の中心線を境にして隣接し
て配置してあってもよく、この場合には上記と同様の理
由によりパレット５の前後左右の各辺の中間部の補強を
バランス良く行うことができるものである。The intermediate portions of the front, rear, left and right sides of the pallet 5 are also open to the front surface side and the back surface side is closed by the closing portion, and the back surface side is open and the front surface side is closed by the closing portion. The rear surface side concave portion may be disposed adjacent to the pallet 5 with the center line in the front-rear direction or the center line in the left-right direction as a boundary. The intermediate part of each side can be reinforced with good balance.
【００２３】[0023]
【発明の効果】本発明の請求項１記載の発明にあって
は、上述のように、フォーク挿入孔部分の表裏両側にデ
ッキボードが存在し且つ上下金型によってのみ表裏両側
のデッキボードが成形される箇所において表裏両側のデ
ッキボードにフォークの挿入方向と交差する方向に延び
たフォークの幅よりも長い横長桟が上下に重ならないよ
うに位置をずらせて形成され、このフォーク挿入方向と
交差する表面側のデッキボードに形成された横長桟は下
横片と下横片の両側端から表面側に向けて突出する両側
片とで構成されたＵ字状をし、フォーク挿入孔部分の上
記表裏両側にデッキボードが存在し且つ上下金型によっ
てのみ表裏両側のデッキボードが成形される箇所以外の
部分の表面側や裏面側のデッキボードに格子状の桟を形
成し、この格子状の桟のうち横長桟と交差する桟のピッ
チをフォークの幅より短くし、上記Ｕ字状の横長桟のう
ち格子状の桟と交差している側片を除いた側片と下横片
とのなすコーナ部分を斜めに傾斜した傾斜面としてある
ので、フォーク挿入孔にフォークを挿入する際、格子状
の桟が形成された部分においては、フォークの先端が格
子状の桟の下面に沿ってスムーズに奥側に挿入できるも
のであり、また、表裏両側のデッキボードを上下金型で
のみ成形する部分においては、フォークの先端が横長桟
の側片の下端部に当たることがあるが、この横長桟の下
端部は傾斜面となっているので、傾斜面にガイドされて
下横片の下面側に滑るようにして挿入して奥側にスムー
ズに挿入できるものであって、フォークの先端が横長桟
の側片に引っ掛かって挿入ができなくなるということが
なく、また、側片の下端部にフォークの先端が当たって
も下横片と一体のＵ字状をしているため、補強されて破
損が防止されるものである。As described above, according to the first aspect of the present invention, there are deck boards on both sides of the fork insertion hole, and the deck boards on both sides are formed only by the upper and lower molds. The horizontal crosspieces extending in the direction intersecting the fork insertion direction on the both sides of the front and back sides, which are longer than the width of the fork, are formed by shifting the position so that they do not overlap vertically and intersect with this fork insertion direction. The horizontal long rail formed on the deck board on the front side has a U-shape composed of a lower horizontal piece and both side pieces protruding from both ends of the lower horizontal piece toward the front side, and the front and back sides of the fork insertion hole portion are the above-mentioned front and back sides. A grid-shaped crosspiece is formed on the deck board on the front side or the back side of the part other than the part where the deck boards exist on both sides and the deck boards on both sides are molded only by the upper and lower molds. Of the U-shaped laterally long rails, the side piece excluding the side piece that intersects the lattice-shaped rail and the lower horizontal piece are formed by making the pitch of the horizontal rails crossing the horizontal rails shorter than the width of the fork. Since the corner part has an inclined surface, when inserting the fork into the fork insertion hole, the tip of the fork smoothly moves along the lower surface of the grid-shaped bar at the part where the grid-shaped bar is formed. It can be inserted into the back side, and in the part where the deck boards on both front and back sides are molded only with the upper and lower molds, the tip of the fork may hit the lower end of the side piece of the horizontal bar, but this horizontal bar Since the lower end is an inclined surface, it can be inserted by sliding on the lower side of the lower horizontal piece guided by the inclined surface and smoothly inserted to the back side, and the tip of the fork is a horizontally long bar. I can not insert it because it is caught on the side piece Without that that, also because of the side piece lower end to the lower lateral piece even hit the tip of the fork and integral U-shaped, in which damage is reinforced is prevented.
【００２４】また、請求項２記載の発明にあっては、上
記請求項１記載の発明の効果に加えて、パレットの四隅
部分に位置する筒状桁の外隅側の端部に表面側に開口し
且つ裏面側が閉塞部により閉塞された表面側凹部と裏面
側に開口し且つ表面側が閉塞部により閉塞された裏面側
凹部とをパレットの対角線を境に隣接して配置してある
ので、パレットを接地したり積み重ねたりする場合、パ
レットの隅部下面が地面に最初に接地されたり他の物に
衝突したりするようなことがあってもパレットの隅部下
面が破損しにくく、また、隅部の表裏両面部をバランス
良く補強できるものである。According to the invention of claim 2, in addition to the effect of the invention of claim 1, the outer side of the cylindrical girders located at the four corners of the pallet is on the front side. Since the front-side concave portion having the opening and the rear surface side closed by the closing portion and the rear surface-side concave portion having the front surface side closed by the closing portion are arranged adjacent to each other with the diagonal line of the pallet as a boundary, When grounding or stacking the pallets, even if the bottom surface of the corner of the pallet is first grounded on the ground or hits another object, the bottom surface of the corner of the pallet is less likely to be damaged and Both sides of the part can be reinforced with good balance.
【図１】本発明の平面図である。FIG. 1 is a plan view of the present invention.
【図２】同上の底面図である。FIG. 2 is a bottom view of the above.
【図３】同上の正面図である。FIG. 3 is a front view of the above.
【図４】同上の側面図である。FIG. 4 is a side view of the above.
【図５】同上のフォーク挿入孔部分の拡大断面図であ
る。FIG. 5 is an enlarged sectional view of a fork insertion hole portion of the above.
【図６】同上のパレットを金型で成形する際の型締めの
断面図である。FIG. 6 is a cross-sectional view of mold clamping when molding the above pallet with a mold.
【図７】同上のフォークの先端部が傾斜面に当たった状
態の説明図である。FIG. 7 is an explanatory diagram showing a state in which the tip of the fork of the same hits an inclined surface.
【図８】同上のパレットの隅部における表面側凹部と裏
面側凹部とが隣接した部分を示す断面図である。FIG. 8 is a cross-sectional view showing a portion in which a front-side concave portion and a rear-side concave portion are adjacent to each other in a corner portion of the same pallet.
【図９】同上のパレットの隅部の斜視図である。FIG. 9 is a perspective view of a corner portion of the above pallet.
【図１０】従来例のパレットのフォーク挿入孔部分の拡
大断面図である。FIG. 10 is an enlarged cross-sectional view of a fork insertion hole portion of a conventional pallet.
【図１１】同上の従来例のパレットを金型で成形する際
の型締めの断面図である。FIG. 11 is a cross-sectional view of mold clamping when molding the above-mentioned conventional pallet with a mold.
１ デッキボード ２ デッキボード ３ 筒状桁 ４ フォーク挿入孔 ５ パレット ６ 上金型 ７ 下金型 ８ フォーク ９ 横長桟 １０ 下横片 １１ 側片 １２ 格子状の桟 １３ 傾斜面 １４ 閉塞部 １５ 表面側凹部 １６ 閉塞部 １７ 裏面側凹部 1 deck board 2 deck boards 3 tubular girders 4 Fork insertion hole 5 pallets 6 Upper mold 7 Lower mold 8 forks 9 Horizontal cross 10 Lower horizontal strip 11 side pieces 12 Lattice bars 13 inclined surface 14 Block 15 Front side recess 16 Block 17 Back side recess
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平10−77041（ＪＰ，Ａ) 特開 平９−175534（ＪＰ，Ａ) 特開 平９−24939（ＪＰ，Ａ) 特開 平８−324567（ＪＰ，Ａ) 特開 平８−104331（ＪＰ，Ａ) 実開 昭63−175030（ＪＰ，Ｕ) 実開 平２−7791（ＪＰ，Ｕ) 実開 平６−76050（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65D 19/24 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-10-77041 (JP, A) JP-A-9-175534 (JP, A) JP-A-9-24939 (JP, A) JP-A-8- 324567 (JP, A) JP-A-8-104331 (JP, A) Actually open 63-175030 (JP, U) Actually open 2-7791 (JP, U) Actually open 6-76050 (JP, U) (58) Fields surveyed (Int.Cl. 7 , DB name) B65D 19/24
Claims (2)
桁により連結されると共に筒状桁間にフォーク挿入孔が
形成された合成樹脂により一体成形されたパレットにお
いて、フォーク挿入孔部分の表裏両側にデッキボードが
存在し且つ上下金型によってのみ表裏両側のデッキボー
ドが成形される箇所において表裏両側のデッキボードに
フォークの挿入方向と交差する方向に延びたフォークの
幅よりも長い横長桟が上下に重ならないように位置をず
らせて形成され、このフォーク挿入方向と交差する表面
側のデッキボードに形成された横長桟は下横片と下横片
の両側端から表面側に向けて突出する両側片とで構成さ
れたＵ字状をし、フォーク挿入孔部分の上記表裏両側に
デッキボードが存在し且つ上下金型によってのみ表裏両
側のデッキボードが成形される箇所以外の部分の表面側
や裏面側のデッキボードに格子状の桟を形成し、この格
子状の桟のうち横長桟と交差する桟のピッチをフォーク
の幅より短くし、上記Ｕ字状の横長桟のうち格子状の桟
と交差している側片を除いた側片と下横片とのなすコー
ナ部分を斜めに傾斜した傾斜面として成ることを特徴と
する運搬用パレット。1. A pallet integrally formed of synthetic resin in which deck boards on both front and back sides are connected by a plurality of tubular girders and fork insertion holes are formed between the tubular girders. Where there are deck boards on both sides and deck boards on both front and back sides are formed only by upper and lower molds, horizontal decks longer than the width of the forks extending in the direction intersecting the fork insertion direction are formed on the deck boards on both front and back sides. The horizontal rails formed on the deck board on the front side that intersects with the fork insertion direction project toward the front side from both side ends of the lower horizontal piece and the lower horizontal piece. It has a U-shape composed of both side pieces, and there are deck boards on both sides of the fork insertion hole, and the deck boards on both sides are only by the upper and lower molds. Lattice-shaped crosspieces are formed on the deck board on the front surface side and the back surface side other than the portion to be molded, and the pitch of the crosspieces of the grid-shaped crosspieces that intersect with the horizontally long crosspieces is made shorter than the width of the fork. A pallet for transportation, characterized in that a corner portion formed by a side piece and a lower horizontal piece excluding a side piece that intersects the grid-shaped crosspieces of the horizontally long crosspiece is formed as an inclined surface.
外隅側の端部に表面側に開口し且つ裏面側が閉塞部によ
り閉塞された表面側凹部と裏面側に開口し且つ表面側が
閉塞部により閉塞された裏面側凹部とをパレットの対角
線を境に隣接して配置してあることを特徴とする請求項
１記載の運搬用パレット。2. A front side concave portion and a rear side side opening which are open to the front side at the outer corner side ends of the cylindrical girders located at the four corners of the pallet and whose rear side is closed by the closing section, and the front side is closed. 2. The transportation pallet according to claim 1, wherein the rear surface side concave portion closed by the portion is arranged adjacent to the pallet at a diagonal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32476097A JP3400693B2 (en) | 1997-11-26 | 1997-11-26 | Transport pallets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32476097A JP3400693B2 (en) | 1997-11-26 | 1997-11-26 | Transport pallets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11157539A JPH11157539A (en) | 1999-06-15 |
| JP3400693B2 true JP3400693B2 (en) | 2003-04-28 |
Family
ID=18169379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32476097A Expired - Fee Related JP3400693B2 (en) | 1997-11-26 | 1997-11-26 | Transport pallets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3400693B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4310009B2 (en) * | 1999-09-16 | 2009-08-05 | 三甲株式会社 | Plastic pallet |
| JP2002128079A (en) * | 2000-10-31 | 2002-05-09 | Gifu Plast Ind Co Ltd | Pallet |
| JP2002166939A (en) * | 2000-11-28 | 2002-06-11 | Gifu Plast Ind Co Ltd | Pallet |
-
1997
- 1997-11-26 JP JP32476097A patent/JP3400693B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11157539A (en) | 1999-06-15 |
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