JP2015096425A

JP2015096425A - Tray

Info

Publication number: JP2015096425A
Application number: JP2013236420A
Authority: JP
Inventors: 憲司秋山; Kenji Akiyama
Original assignee: Sanko Co Ltd
Current assignee: Sanko Co Ltd
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2015-05-21
Anticipated expiration: 2033-11-15
Also published as: JP6214040B2

Abstract

PROBLEM TO BE SOLVED: To provide a tray capable of suppressing manufacturing cost as compared with a conventional one.SOLUTION: When a workpiece 90 having enlarged-diameter sections 91 to 95 protruding from a shaft section 90S is housed in a workpiece housing groove 12 in a tray 10, the shaft section 90S is mounted in a state that outer peripheral surfaces of the enlarged-diameter sections 91 to 95 float from a bottom wall 13. A fifth bridge protrusion 75 formed in the workpiece housing groove 12 includes an axial direction movement regulation protrusion 77 which faces an end face 95M of the fifth enlarged-diameter section 95 of the workpiece 90 so as to regulate the axial direction movement of the workpiece 90. A protrusion vicinity hole 78 is formed in a range including a portion overlapped with the axial direction movement regulation protrusion 77 when viewed from the directly above.

Description

本発明は、シャフト部からカム部、ギヤ部その他の拡径部が側方に張り出した構造のワークのうち拡径部の外周面が浮いた状態になるようシャフト部が載置されるトレーに関する。 The present invention relates to a tray on which a shaft portion is placed such that an outer peripheral surface of the enlarged diameter portion of a workpiece having a structure in which a cam portion, a gear portion, and other enlarged diameter portions project laterally from the shaft portion is in a floating state. .

従来、この種のトレーとして、ワークのシャフト部が載置される台座部の側面に軸方向移動規制突部を設けて拡径部の端面に突き合わせ、ワークの軸方向の移動を規制したものが知られている（例えば、特許文献１参照）。 Conventionally, as this type of tray, an axial movement restricting protrusion is provided on the side surface of the pedestal part on which the shaft portion of the work is placed, and the end face of the enlarged diameter portion is abutted to restrict movement of the work in the axial direction. It is known (see, for example, Patent Document 1).

特開２０１１−１５７１２７号公報（図１２）JP2011-157127A (FIG. 12)

しかしながら、上述した従来のトレーでは、樹脂で射出成形する際に、軸方向移動規制突部がアンダーカット形状となるため、金型の構造が複雑となって製造コストが高くなるという問題があった。 However, the above-described conventional tray has a problem in that, when injection molding is performed with resin, the axial movement restricting protrusion has an undercut shape, which complicates the mold structure and increases the manufacturing cost. .

本発明は、上記事情に鑑みてなされたもので、従来より製造コストを抑えることが可能なトレーの提供を目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tray capable of reducing the manufacturing cost as compared with the related art.

上記目的を達成するためになされた請求項１の発明に係るトレーは、シャフト部から拡径部が側方に張り出した構造のワークのうち拡径部の外周面が浮いた状態になるようシャフト部が載置されるトレーであって、シャフト部の外周面に当接してその径方向の移動を規制する径方向移動規制部と、シャフト部より下方で拡径部の端面に対向する拡径部対向部から突出し、拡径部の端面に突き合わされてワークの軸方向の移動を規制する軸方向移動規制突部とを備えた樹脂製のトレーにおいて、真上から見て軸方向移動規制突部と重なる部分全体を含む範囲に突部近傍孔を貫通形成したところに特徴を有する。 The tray according to the invention of claim 1, which has been made to achieve the above object, has a shaft in which the outer peripheral surface of the enlarged diameter portion of the workpiece having a structure in which the enlarged diameter portion projects laterally from the shaft portion is in a floating state. A tray on which the portion is placed, a radial movement restricting portion that abuts on the outer peripheral surface of the shaft portion and restricts the movement in the radial direction, and a diameter expansion facing the end surface of the diameter increasing portion below the shaft portion In a resin tray having an axial movement restricting protrusion that protrudes from the opposite portion and is abutted against the end face of the enlarged diameter portion to restrict the movement of the workpiece in the axial direction, the axial movement restricting protrusion is seen from directly above. It is characterized in that a hole near the protrusion is formed so as to penetrate the range including the entire portion overlapping the portion.

請求項２の発明は、請求項１に記載のトレーにおいて、軸方向移動規制突部を有した拡径部対向部は、トレーの上面側に膨出しかつ裏側が凹み、ワークの軸方向で下方に向かって末広がり形状となった膨出突部の傾斜側壁として備えられると共に、傾斜側壁のうち軸方向移動規制突部より下側部分が突部近傍孔によって切除され、ワークが空の状態でトレー同士を上下に積み重ねたときに、下側のトレーの軸方向移動規制突部が、上側のトレーの突部近傍孔に受容されて、下側のトレーの膨出突部が上側のトレーの膨出突部の裏側に嵌合されるように構成されたところに特徴を有する。 According to a second aspect of the present invention, in the tray according to the first aspect, the enlarged-diameter facing portion having the axial movement restricting protrusion bulges on the upper surface side of the tray and is recessed on the back side, and is downward in the axial direction of the workpiece. It is provided as an inclined side wall of the bulging protrusion that has a divergent shape toward the end, and a portion of the inclined side wall that is lower than the axial movement restricting protrusion is cut away by a hole near the protrusion, and the tray is placed in an empty state. When they are stacked one above the other, the axial movement restricting protrusion of the lower tray is received in the hole near the protrusion of the upper tray, and the bulging protrusion of the lower tray is It is characterized in that it is configured to be fitted to the back side of the protruding portion.

請求項３の発明は、請求項２に記載のトレーにおいて、膨出突部の上面は、水平でかつシャフト部と略同心円弧状の溝内面を有した上面溝を備え、軸方向移動規制突部は、傾斜側壁における上面溝の開口縁に配置され、突部近傍孔は、傾斜側壁のうち上面溝から両側方に離れた２位置間の全体を切除してなるところに特徴を有する。 According to a third aspect of the present invention, in the tray according to the second aspect, the upper surface of the bulging protrusion is provided with an upper surface groove having a groove inner surface that is horizontal and substantially concentric with the shaft portion, and the axial movement restricting protrusion. Is arranged at the opening edge of the upper surface groove on the inclined side wall, and the protrusion vicinity hole is characterized in that the entire portion between the two positions apart from the upper surface groove on both sides of the inclined side wall is cut out.

［請求項１の発明］
請求項１のトレーでは、真上から見て軸方向移動規制突部と重なる部分全体を含む範囲に突部近傍孔を貫通形成したので、従来のようなアンダーカット形状とならず、従来より金型製作費を低減させて製造コストを抑えることができる。 [Invention of Claim 1]
In the tray of claim 1, since the protrusion vicinity hole is formed through the range including the entire portion overlapping with the axial movement restricting protrusion as viewed from directly above, the conventional undercut shape is not formed, and gold is conventionally used. The manufacturing cost can be reduced by reducing the mold manufacturing cost.

［請求項２の発明］
請求項２の構成によれば、ワークが空の状態でトレー同士を積み上げたときに、下側のトレーの軸方向移動規制突部が、上側のトレーの突部近傍孔に受容されることで、下側のトレーの膨出突部が上側のトレーの膨出突部の裏側に勘合されるので、トレー同士の積み上げ高さを抑えることができ、複数の空のトレーの搬送、収納等が容易になる。 [Invention of claim 2]
According to the configuration of claim 2, when the trays are stacked with the workpieces empty, the axial movement restriction protrusions of the lower tray are received in the holes near the protrusions of the upper tray. Since the bulging protrusion of the lower tray is fitted to the back side of the bulging protrusion of the upper tray, the stacking height between the trays can be suppressed, and transportation and storage of multiple empty trays can be performed. It becomes easy.

［請求項３の発明］
請求項３の構成では、シャフト部と略同心円弧状の上面溝を上面に有した膨出突部の傾斜側壁のうちの上面溝から両側方に離れた２位置間の全体を切除して突部近傍孔を形成したので、軸方向移動規制突部の突出量を小さくしても、突部近傍孔により傾斜側壁と拡径部との干渉を回避することができる。 [Invention of claim 3]
In the structure of Claim 3, it cuts out the whole between two positions away from the upper surface groove | channel among the inclination side walls of the bulging protrusion part which has the upper surface groove | channel of the shaft part and the substantially concentric circular arc shape on the upper surface. Since the proximity hole is formed, interference between the inclined side wall and the enlarged diameter portion can be avoided by the protrusion vicinity hole even if the protrusion amount of the axial movement restricting protrusion is reduced.

本発明の一実施形態に係るトレーを上方から見た斜視図The perspective view which looked at the tray concerning one embodiment of the present invention from the upper part トレーを下方から見た斜視図Perspective view of tray viewed from below ワーク収容溝の斜視図Perspective view of workpiece receiving groove 図３における第５の架橋突部周辺の拡大図Enlarged view around the fifth bridging protrusion in FIG. 図２における第５の裏中間溝周辺の拡大図Enlarged view around the fifth back intermediate groove in FIG. ワークを収容したワーク収容溝の側断面図Side cross-sectional view of workpiece receiving groove containing workpiece 上下に積み上げられたトレーの側断面図Cross-sectional side view of trays stacked up and down 図６における第５の架橋突部周辺の拡大図Enlarged view around the fifth bridging protrusion in FIG. 図７における第５の架橋突部側の拡大図Enlarged view of the fifth bridging protrusion side in FIG. 射出成形金型の側断面図Side cross section of injection mold 変形例に係るトレーの軸方向移動規制突部周辺の側断面図Side sectional view around the axial movement restricting protrusion of the tray according to the modification. 変形例に係るトレーの軸方向移動規制突部周辺の側断面図Side sectional view around the axial movement restricting protrusion of the tray according to the modification. 変形例に係るトレーの軸方向移動規制突部周辺の側断面図Side sectional view around the axial movement restricting protrusion of the tray according to the modification.

以下、本発明の一実施形態を図１〜図１０に基づいて説明する。図１に示した本実施形態のトレー１０は、樹脂の射出成形品であって、その平面形状は、四角形における１対の対角を斜めに横切るようにカットして１対のコーナーカット部１０Ａ，１０Ａを設けた形状になっている。また、トレー１０には、外縁部全体に水平な帯板状の外枠フランジ部１１が備えられ、その外枠フランジ部１１の内側部分に、互いに平行なワーク収容溝１２と土手部４０とが複数ずつ交互に並べて配置されている。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The tray 10 of the present embodiment shown in FIG. 1 is an injection-molded product of resin, and its planar shape is cut so as to obliquely cross a pair of diagonals in a quadrangle, and a pair of corner cut portions 10A. , 10A. In addition, the tray 10 is provided with a strip-shaped outer frame flange portion 11 that is horizontal across the entire outer edge portion, and a work receiving groove 12 and a bank portion 40 that are parallel to each other are formed on the inner portion of the outer frame flange portion 11. A plurality of them are arranged alternately.

土手部４０は、外枠フランジ部１１より僅かに下がった位置に、水平な平板状をなした天井壁４１を有し、ワーク収容溝１２は、その土手部４０の天井壁４１より下がった位置に、水平な平板状をなした底壁１３を有している。これら天井壁４１と底壁１３とは略同一の幅をなし、隣り合った天井壁４１と底壁１３の間は、上下方向に対して傾斜した傾斜側壁１５によって連絡されている。そして、天井壁４１とその両隣の傾斜側壁１５，１５とから土手部４０が構成されると共に、隣り合った土手部４０，４０同士の間、及び、土手部４０と次述するサブ土手部５１との間がワーク収容溝１２になっている。 The bank portion 40 has a horizontal flat plate-like ceiling wall 41 at a position slightly lower than the outer frame flange portion 11, and the work receiving groove 12 is a position lower than the ceiling wall 41 of the bank portion 40. The bottom wall 13 has a horizontal flat plate shape. The ceiling wall 41 and the bottom wall 13 have substantially the same width, and the adjacent ceiling wall 41 and the bottom wall 13 are connected by an inclined side wall 15 that is inclined with respect to the vertical direction. And the bank part 40 is comprised from the ceiling wall 41 and the inclination side walls 15 and 15 of the both sides, and between the adjacent bank parts 40 and 40, and the bank part 40, and the sub-bank part 51 described below. A workpiece receiving groove 12 is formed between the two.

交互に並んだ土手部４０群及びワーク収容溝１２群の一方の端部はワーク収容溝１２になっていて、そのワーク収容溝１２と外枠フランジ部１１との間にはサブ土手部５１が設けられている。サブ土手部５１は、土手部４０の天井壁４１を幅方向の中間で分割した大きさの天井壁５２を備え、その天井壁５２と底壁１３の一側縁部同士の間が前記した傾斜側壁１５にて連絡されている。なお、サブ土手部５１の一端部は、コーナーカット部１０Ａに配置されて斜めにカットされている。 One end of the alternately arranged bank portions 40 group and the work accommodating groove 12 group is a workpiece accommodating groove 12, and a sub-bank portion 51 is provided between the workpiece accommodating groove 12 and the outer frame flange portion 11. Is provided. The sub bank portion 51 includes a ceiling wall 52 having a size obtained by dividing the ceiling wall 41 of the bank portion 40 in the middle in the width direction, and the inclination between the one side edge portion of the ceiling wall 52 and the bottom wall 13 is as described above. The side wall 15 communicates. In addition, the one end part of the sub bank part 51 is arrange | positioned at the corner cut part 10A, and is cut diagonally.

交互に並んだ土手部４０群及びワーク収容溝１２群の他方の端部は土手部４０になっていて、その土手部４０と外枠フランジ部１１との間にはサブ溝部５３が設けられている。サブ溝部５３は、ワーク収容溝１２の底壁１３を幅方向の中間で分割した大きさの底壁５４を備え、その底壁５４と天井壁４１の一側壁同士の間が前記した傾斜側壁１５にて連絡されている。なお、サブ溝部５３の一端部は、コーナーカット部１０Ａに配置されて斜めにカットされている。 The other end of the alternately arranged bank 40 group and the work receiving groove 12 group is a bank 40, and a sub-groove 53 is provided between the bank 40 and the outer frame flange 11. Yes. The sub-groove portion 53 includes a bottom wall 54 having a size obtained by dividing the bottom wall 13 of the workpiece receiving groove 12 in the middle in the width direction, and the inclined side wall 15 is formed between the bottom wall 54 and one side wall of the ceiling wall 41. Contacted at Note that one end of the sub-groove portion 53 is disposed in the corner cut portion 10A and is cut obliquely.

外枠フランジ部１１の内縁部全体からは、トレイ側壁１６が斜め内側に向かって垂下されていて、そのトレイ側壁１６の下端部が、上記した天井壁５２及び底壁５４の側縁部、各天井壁４１，５２、底壁１３，５４及び傾斜側壁１５の両端縁部に繋がっている。 From the entire inner edge portion of the outer frame flange portion 11, the tray side wall 16 is suspended obliquely inward, and the lower end portion of the tray side wall 16 is connected to the side edge portions of the ceiling wall 52 and the bottom wall 54 described above. The ceiling walls 41 and 52, the bottom walls 13 and 54, and the both end edges of the inclined side wall 15 are connected.

図２に示すように、トレー１０の下面では、土手部４０の裏側が裏側溝部６０となり、ワーク収容溝１２及びサブ溝部５３の裏側が裏側土手部６１になっている。そして、トレー１０を上下に積み上げる際に、下側のトレー１０に対して上側のトレー１０を、垂直軸回りに１８０度回転させて積み上げて（これを以下、「スタッキングする」という。）、それら上下のトレー１０，１０の外縁同士がずれないように配置すると、下側のトレー１０における土手部４０及びサブ土手部５１の上面に、上側のトレー１０の裏側土手部６１の下面が載置される。一方、トレー１０を上下に積み上げる際に、下側のトレー１０に対して上側のトレー１０を回転させずに積み上げて（これを以下、「ネスティングする」という。）、それら上下のトレー１０，１０の外縁同士がずれないように配置すると、下側のトレー１０におけるワーク収容溝１２及びサブ溝部５３の内側に、上側のトレー１０の裏側土手部６１が受容される。 As shown in FIG. 2, on the lower surface of the tray 10, the back side of the bank portion 40 is a back side groove portion 60, and the back sides of the work receiving groove 12 and the sub groove portion 53 are back side bank portions 61. When the trays 10 are stacked up and down, the upper tray 10 is rotated 180 degrees around the vertical axis with respect to the lower tray 10 (hereinafter referred to as “stacking”), and these are stacked. If the outer edges of the upper and lower trays 10, 10 are arranged so as not to deviate from each other, the lower surface of the back bank portion 61 of the upper tray 10 is placed on the upper surfaces of the bank portion 40 and the sub bank portion 51 of the lower tray 10. The On the other hand, when the trays 10 are stacked up and down, the upper tray 10 is stacked without rotating with respect to the lower tray 10 (hereinafter referred to as “nesting”), and the upper and lower trays 10 and 10 are stacked. If the outer edges of the tray 10 are arranged so as not to be displaced, the back bank portion 61 of the upper tray 10 is received inside the work receiving groove 12 and the sub groove portion 53 of the lower tray 10.

図１に示すように、トレイ側壁１６のうち各土手部４０の天井壁４１における各端部の上面と外枠フランジ部１１の上面とに挟まれた部分から末端突部４２が段付き状に突出している。また、土手部４０群の長手方向の一端寄り位置には、矢印形の目印４５が刻印されている。なお、サブ土手部５１のうちコーナーカット部１０Ａと反対側の一端部にも土手部４０の末端突部４２と同様の末端突部５５が形成されている。 As shown in FIG. 1, the end protrusion 42 is stepped from a portion sandwiched between the upper surface of each end portion of the ceiling side wall 16 of the tray side wall 16 and the upper surface of the outer frame flange portion 11. It protrudes. An arrow-shaped mark 45 is engraved at a position near one end in the longitudinal direction of the bank portion 40 group. A terminal protrusion 55 similar to the terminal protrusion 42 of the bank 40 is also formed at one end of the sub bank 51 opposite to the corner cut part 10A.

土手部４０群のうちの１つの土手部４０（具体的には、サブ土手部５１側から数えて２番目の土手部４０）には、第１と第２の位置決突部４３，４４が形成されている。第１の位置決突部４３は、土手部４０の一端部において天井壁４１の上面から段付き状に突出し、平面形状が四角形をなすと共に、その一辺が末端突部４２に重なった構造をなしている。また、第２の位置決突部４４は、天井壁４１の上面から段付き状に突出し、平面形状が第１の位置決突部４３より一回り小さい四角形をなすと共に、その一辺が末端突部４２に重なった構造をなしている。 The first and second positioning protrusions 43 and 44 are provided on one bank 40 (specifically, the second bank 40 counted from the sub bank 51 side) of the bank 40 group. Is formed. The first positioning protrusion 43 protrudes in a stepped manner from the upper surface of the ceiling wall 41 at one end portion of the bank portion 40, and has a structure in which a planar shape forms a quadrangle and one side thereof overlaps the end protrusion portion 42. ing. The second positioning protrusion 44 protrudes from the top surface of the ceiling wall 41 in a stepped shape, and the planar shape forms a square that is slightly smaller than the first positioning protrusion 43, and one side of the second positioning protrusion 44 is a terminal protrusion. The structure overlaps 42.

また、ワーク収容溝１２群のうちの１つのワーク収容溝１２（具体的には、サブ溝部５３側から数えて２番目のワーク収容溝１２）には、位置決突部４９が形成されている。この位置決突部４９は、上述した第２の位置決突部４４とほぼ同じ大きさの四角形状であって、トレー１０の裏側では図２に示すように、位置決凹部６５をなしている。 Further, a positioning protrusion 49 is formed in one work accommodating groove 12 (specifically, the second work accommodating groove 12 counted from the sub-groove 53 side) of the group of work accommodating grooves 12. . The positioning protrusion 49 has a quadrangular shape that is approximately the same size as the second positioning protrusion 44 described above, and has a positioning recess 65 on the back side of the tray 10 as shown in FIG. .

外枠フランジ部１１には、第１と第２の位置決突部４３，４４を有した土手部４０の両側に位置する土手部４０，４０の延長線上に、指掛け凹部１１Ａがそれぞれ形成されている。各指掛け凹部１１Ａは、外枠フランジ部１１の先端角部を面取りした構造になっている。なお、指掛け凹部１１Ａは、指が挿入可能な大きさになっていて、ネスティングされた複数のトレー１０のうち下側のトレー１０の指掛け凹部１１Ａに作業者の指が挿入されることで、そのすぐ上のトレー１０を容易に持ち上げることが可能となっている。 The outer frame flange portion 11 is formed with finger-hanging recess portions 11A on extension lines of the bank portions 40, 40 located on both sides of the bank portion 40 having the first and second positioning protrusions 43, 44, respectively. Yes. Each finger-hanging recess 11 A has a structure in which the tip corner portion of the outer frame flange portion 11 is chamfered. Note that the finger-hanging recess 11A is sized so that a finger can be inserted. By inserting the operator's finger into the finger-holding recess 11A of the lower tray 10 among the plurality of nested trays 10, The tray 10 immediately above can be easily lifted.

土手部４０の長手方向の複数箇所には、土手部４０群全体を横切るように中間溝４６が形成されている。中間溝４６は、各土手部４０の上端から下端寄り位置に亘って形成され、下方に向かうに従い溝幅が狭いＶ溝構造になっている。そして、各中間溝４６は、トレー１０の裏面側では図２に示すように、裏側溝部６０を横切る裏架橋突部６２になっている。また、裏架橋突部６２の中央には裏円弧溝６２Ｍが形成され、その裏円弧溝６２Ｍが上方に向かって円弧状に膨出した溝内膨出部４６Ｔになって中間溝４６内に備えられている。そして、溝内膨出部４６Ｔの外周面に、中間溝４６内の対向面間を連絡するように複数のリブが形成されている。 Intermediate grooves 46 are formed at a plurality of locations in the longitudinal direction of the bank 40 so as to cross the entire bank 40 group. The intermediate groove 46 is formed from the upper end to the lower end position of each bank portion 40, and has a V-groove structure in which the groove width becomes narrower as it goes downward. Each intermediate groove 46 is a back bridge protrusion 62 that crosses the back groove 60 on the back side of the tray 10 as shown in FIG. Further, a back arc groove 62M is formed at the center of the back bridge protrusion 62, and the back arc groove 62M forms an in-groove bulging portion 46T that bulges upward in an arc shape and is provided in the intermediate groove 46. It has been. A plurality of ribs are formed on the outer peripheral surface of the in-groove bulging portion 46T so as to communicate between the opposing surfaces in the intermediate groove 46.

土手部４０の長手方向の中心より僅かに目印４５側にずれた位置には、土手部４０群全体を横切るように第１位置決突条４７が形成され、その第１位置決突条４７がトレー１０の裏面側では図２に示すように裏側溝部６０の底面を横切る第１位置決溝６３になっている。なお、図１に示すように、第１位置決突条４７の上面は、外枠フランジ部１１の上面と面一になっている。 A first positioning protrusion 47 is formed so as to cross the entire bank 40 group at a position slightly shifted from the center in the longitudinal direction of the bank 40 to the mark 45 side. As shown in FIG. 2, a first positioning groove 63 that crosses the bottom surface of the back-side groove portion 60 is formed on the back surface side of the tray 10. As shown in FIG. 1, the upper surface of the first positioning protrusion 47 is flush with the upper surface of the outer frame flange portion 11.

ワーク収容溝１２の長手方向の中心より僅かに目印４５から離れる側にずれた位置には、ワーク収容溝１２群全体を横切るように第２位置決突条４８が形成され、その第２位置決突条４８がトレー１０の裏面側では図２に示すように裏側土手部６１の上面を横切る第２位置決溝６４になっている。そして、図７の下側部分に示すように、トレー１０，１０同士をネスティングしたときに、下側のトレー１０の第２位置決突条４８が、上側のトレー１０の第２位置決溝６４に嵌合し、上下のトレー１０，１０がワーク収容溝１２及び土手部４０の長手方向で位置決めされる。一方、図７の上側部分に示すように、トレー１０，１０同士をスタッキングしたときに、下側のトレー１０の第１位置決突条４７が、上側のトレー１０の第２位置決溝６４に嵌合し、上下のトレー１０，１０がワーク収容溝１２及び土手部４０の長手方向で位置決めされる。なお、このとき、上述した下側のトレー１０の土手部４０における第２の位置決突部４４（図１参照）が、上側のトレー１０の裏側土手部６１における位置決凹部６５（図２参照）に嵌合し、下側のトレー１０の第１の位置決突部４３（図１参照）が、後に詳述する裏末端凹部８６（図２参照）に嵌合する。 A second positioning protrusion 48 is formed so as to cross the entire group of workpiece receiving grooves 12 at a position slightly shifted from the center in the longitudinal direction of the workpiece receiving groove 12 to the side away from the mark 45. As shown in FIG. 2, the protrusion 48 forms a second positioning groove 64 across the upper surface of the back bank 61 on the back side of the tray 10. Then, as shown in the lower part of FIG. 7, when the trays 10 and 10 are nested, the second positioning protrusion 48 of the lower tray 10 has the second positioning groove 64 of the upper tray 10. And the upper and lower trays 10 are positioned in the longitudinal direction of the workpiece receiving groove 12 and the bank 40. On the other hand, as shown in the upper part of FIG. 7, when the trays 10, 10 are stacked, the first positioning protrusion 47 of the lower tray 10 is formed in the second positioning groove 64 of the upper tray 10. The upper and lower trays 10 are positioned in the longitudinal direction of the work accommodating groove 12 and the bank 40. At this time, the second positioning protrusion 44 (see FIG. 1) in the bank 40 of the lower tray 10 described above is replaced with the positioning recess 65 (see FIG. 2) in the back bank 61 of the upper tray 10. ) And the first positioning protrusion 43 (see FIG. 1) of the lower tray 10 is fitted into the back end recess 86 (see FIG. 2) described in detail later.

図３に示すように、ワーク収容溝１２の内部には、トレー１０の裏面における裏側溝部６０内の裏架橋突部６２と同様の構造をなした第１〜第５の架橋突部７１〜７５がワーク収容溝１２の長手方向の一端側（図３の左側）から順に形成され、それら第１〜第５の架橋突部７１〜７５の中央には円弧溝７１Ｍ〜７５Ｍが形成されている。なお、ワーク収容溝１２のうち第１〜第５の架橋突部７１〜７５で区画された部分の底壁１３には、１又は複数の水抜き孔１３Ａが形成されている。 As shown in FIG. 3, first to fifth bridging protrusions 71 to 75 having the same structure as that of the back bridging protrusion 62 in the rear groove part 60 on the back surface of the tray 10 are provided in the work receiving groove 12. Are formed in order from one end side (left side in FIG. 3) of the workpiece housing groove 12 in the longitudinal direction, and arc grooves 71M to 75M are formed at the centers of the first to fifth bridging protrusions 71 to 75. One or a plurality of drain holes 13 A are formed in the bottom wall 13 of the part defined by the first to fifth bridging protrusions 71 to 75 in the workpiece housing groove 12.

また、第１〜第５の架橋突部７１〜７５は、トレー１０の裏面側では図２に示すように、裏側土手部６１を横切る第１〜第５の裏中間溝８１〜８５をなし、円弧溝７１Ｍ〜７５Ｍが、下方に向かって円弧状に膨出した裏溝内膨出部８１Ｔ〜８５Ｔになって第１〜第５の裏中間溝８１〜８５内に備えられている。そして、裏溝内膨出部８１Ｔ〜８５Ｔの外周面に、第１〜第５の裏中間溝８１〜８５内の対向面間を連絡するように複数のリブが形成されている。 Also, the first to fifth bridging protrusions 71 to 75 form the first to fifth back intermediate grooves 81 to 85 that cross the back side bank 61 as shown in FIG. The arc grooves 71M to 75M are provided in the first to fifth back intermediate grooves 81 to 85 as the back groove inflated portions 81T to 85T that bulge downward in an arc shape. A plurality of ribs are formed on the outer peripheral surfaces of the back groove bulging portions 81T to 85T so as to communicate between the opposing surfaces in the first to fifth back intermediate grooves 81 to 85.

詳細には、第１〜第５の架橋突部７１〜７５は、ワーク収容溝１２の長手方向では、下方に向かって末広がり形状をなし、上下方向に対して傾斜した傾斜側壁７１Ｈ〜７５Ｈを備えている。また、トレー１０の裏側では、第１〜第５の裏中間溝８１〜８５は、長手方向で上方に向かって窄まった形状をなし、傾斜側壁７１Ｋ〜７５Ｋが裏中間溝対向壁８１Ｈ〜８５Ｈになっている。なお、各裏中間溝８１〜８５には、裏中間溝対向壁８１Ｈ〜８５Ｈ同士を連絡するように複数のリブが形成されている。 Specifically, the first to fifth bridging protrusions 71 to 75 have inclined side walls 71 H to 75 H that form a diverging shape downward in the longitudinal direction of the work accommodating groove 12 and are inclined with respect to the vertical direction. ing. Further, on the back side of the tray 10, the first to fifth back intermediate grooves 81 to 85 have a shape narrowed upward in the longitudinal direction, and the inclined side walls 71K to 75K are the back intermediate groove facing walls 81H to 85H. It has become. Each of the back intermediate grooves 81 to 85 is formed with a plurality of ribs so as to connect the back intermediate groove facing walls 81H to 85H.

また、図３に示すように、第１〜第４の架橋突部７１〜７４は、土手部４０と同じ高さになっていて、上面が土手部４０の天井壁４１と面一になっている。一方、第５の架橋突部７５は、第１〜第４の架橋突部７１〜７４よりも高さが低くなっている。なお、円弧溝７１Ｍ〜７５Ｍは、ワーク収容溝１２の長手方向から見たときに、略同心円上に配置され、第４の架橋突部７４の円弧溝７４Ｍのみ一回り小さくなっている。 As shown in FIG. 3, the first to fourth bridging protrusions 71 to 74 are the same height as the bank 40, and the upper surface is flush with the ceiling wall 41 of the bank 40. Yes. On the other hand, the fifth bridging protrusion 75 is lower in height than the first to fourth bridging protrusions 71 to 74. Note that the arc grooves 71M to 75M are arranged substantially concentrically when viewed from the longitudinal direction of the workpiece accommodating groove 12, and only the arc groove 74M of the fourth bridging protrusion 74 is slightly smaller.

ワーク収容溝１２のうち長手方向で第５の架橋突部７５と対向する端部壁には、溝幅方向の中間位置で溝内へ突出した末端突部７６が形成されている。末端突部７６は、ワーク収容溝１２の上端から下端に亘って形成され、末端突部７６の上面は土手部４０上面と略面一になっている。また、末端突部７６の第５の架橋突部７５と対向する壁は、図８に示すように、上下方向に対して傾斜した傾斜対向壁７６Ｈになっている。末端突部７６は、トレー１０の裏面側では図５に示すように、裏末端凹部８６になっていて、その裏末端凹部８６内には、図８にしめすように、末端突部７６の天井壁と傾斜対向壁７６Ｈとの間を連絡するようにリブが形成されている。 An end protrusion 76 that protrudes into the groove at an intermediate position in the groove width direction is formed on an end wall of the work accommodating groove 12 that faces the fifth bridging protrusion 75 in the longitudinal direction. The end protrusion 76 is formed from the upper end to the lower end of the workpiece housing groove 12, and the upper surface of the end protrusion 76 is substantially flush with the upper surface of the bank 40. Further, as shown in FIG. 8, the wall of the terminal protrusion 76 that faces the fifth bridging protrusion 75 is an inclined facing wall 76H that is inclined with respect to the vertical direction. As shown in FIG. 5, the end protrusion 76 is a back end recess 86 on the back side of the tray 10, and the ceiling of the end protrusion 76 is inserted into the back end recess 86 as shown in FIG. 8. Ribs are formed so as to communicate between the wall and the inclined opposing wall 76H.

図４に示すように、第５の架橋突部７５のうち末端突部７６と対向する傾斜側壁７５Ｈの上端部からは、軸方向移動規制突部７７が末端突部７６側に突出している。詳細には、軸方向移動規制突部７７は、円弧溝７５Ｍの開口縁に配置されて円弧溝７５Ｍに沿った円弧状をなしている。さらに詳細には、図８に示すように、第５の架橋突部７５のうち円弧溝７５Ｍを構成する円弧壁７５Ａは、軸方向移動規制突部７７側の端部が上方に膨出して肉厚となっていて、その円弧壁７５Ａの肉厚部分と軸方向移動規制突部７７とが、同じ厚さになっている。この構成によれば、軸方向移動規制突部７７の強度アップが図られる。なお、上述した裏溝内膨出部８５Ｔの外周面の複数のリブは、図５に示すように、軸方向移動規制突部７７の裏側まで延びて、先端部が上方に向かって傾斜した先細り形状になっている。 As shown in FIG. 4, the axial movement restricting protrusion 77 protrudes toward the end protrusion 76 from the upper end of the inclined side wall 75 H facing the end protrusion 76 of the fifth bridging protrusion 75. Specifically, the axial direction movement restricting protrusion 77 is arranged at the opening edge of the arc groove 75M and has an arc shape along the arc groove 75M. More specifically, as shown in FIG. 8, the arc wall 75A constituting the arc groove 75M of the fifth bridging protrusion 75 has an end portion on the axial movement restricting protrusion 77 side that bulges upward and has a wall thickness. The thickness of the arc wall 75A and the axial movement restricting projection 77 are the same. According to this configuration, the strength of the axial movement restricting protrusion 77 can be increased. As shown in FIG. 5, the plurality of ribs on the outer peripheral surface of the above-described back groove bulging portion 85T extend to the back side of the axial movement restricting projection 77, and the tapered end portion is inclined upward. It has a shape.

また、末端突部７６側の傾斜側壁７５Ｈのうち軸方向移動規制突部７７の下方には、突部近傍孔７８が貫通形成されている。詳細には、突部近傍孔７８は、トレー１０を真上から見たときに軸方向移動規制突部７７と重なる部分全体を含む範囲に配置され、傾斜側壁７５Ｈとワーク収容溝１２の底壁１３との両方に亘って形成されている。また、突部近傍孔７８は、円弧溝７５Ｍよりも幅広になっていて、傾斜側壁７５Ｈにおいて、円弧溝７５Ｍから溝幅方向の両側に離れた２位置間に挟まれた帯状の領域を切除して形成されている。 Further, a protrusion vicinity hole 78 is formed through the inclined side wall 75H on the terminal protrusion 76 side below the axial movement restricting protrusion 77. Specifically, the protrusion vicinity hole 78 is disposed in a range including the entire portion overlapping the axial movement restricting protrusion 77 when the tray 10 is viewed from directly above, and the inclined side wall 75H and the bottom wall of the work accommodating groove 12 are disposed. 13 is formed over both. Further, the protrusion vicinity hole 78 is wider than the arc groove 75M, and in the inclined side wall 75H, a band-like region sandwiched between two positions away from the arc groove 75M on both sides in the groove width direction is cut out. Is formed.

ここで、図７の下側に示したように、複数のトレー１０がネスティングされると、下側のトレー１０の第１〜第５の架橋突部７１〜７５が上側のトレーの第１〜第５の裏中間溝８１〜８５と嵌合する。このとき、図９の下側に拡大して示すように、下側のトレー１０の軸方向移動規制突部７７は、上側のトレー１０の突部近傍孔７８内に受容される。これにより、本実施形態では、トレー１０同士の積み上げ高さを抑えることができ、複数の空のトレー１０の搬送、収納等が容易になる。 Here, as shown in the lower side of FIG. 7, when the plurality of trays 10 are nested, the first to fifth bridging protrusions 71 to 75 of the lower tray 10 become the first to first of the upper tray. The fifth back intermediate grooves 81 to 85 are fitted. At this time, as shown in an enlarged view on the lower side of FIG. 9, the axial movement restricting protrusion 77 of the lower tray 10 is received in the protrusion vicinity hole 78 of the upper tray 10. Thereby, in this embodiment, the stacking height of trays 10 can be suppressed, and conveyance, storage, etc. of several empty trays 10 become easy.

さて、トレー１０は、図１に示すように、ワーク収容溝１２にワーク９０を収容可能となっている。ワーク９０は、シャフト部９０Ｓの一端側から順に第１〜第５の拡径部９１〜９５が側方に張り出した構造になっていて、具体的には、カムシャフトである。なお、詳細には、シャフト部９０Ｓは、図６に示すように、第２の各径部よりも一端側（図６の左側）部分、及び、第３の各径部９３と第４の各径部９４とに挟まれた部分に比べて、第２の拡径部９２と第３の拡径部９３とに挟まれた部分、及び、第４の拡径部９４より他端側部分が細くなっている。 Now, as shown in FIG. 1, the tray 10 can accommodate the workpiece 90 in the workpiece accommodating groove 12. The workpiece 90 has a structure in which the first to fifth diameter-expanded portions 91 to 95 protrude in the order from one end side of the shaft portion 90S, and is specifically a camshaft. In detail, as shown in FIG. 6, the shaft portion 90 S has one end side (left side in FIG. 6) portion from the second diameter portions, and the third diameter portions 93 and the fourth diameter portions. Compared to the portion sandwiched between the diameter portions 94, the portion sandwiched between the second diameter expanded portion 92 and the third diameter expanded portion 93, and the other end side portion from the fourth diameter expanded portion 94 are It is getting thinner.

そして、ワーク収容溝１２にワーク９０が収容されると、図６に示すように、シャフト部９０Ｓのうち第１の拡径部９１と第２の拡径部９２とに挟まれた部分、第３の拡径部９３と第４の拡径部９４とに挟まれた部分及び第４の拡径部９４と第５の拡径部９５とに挟まれた部分が、それぞれ、第１の架橋突部７１、第３の架橋突部７３及び第４の架橋突部７４の上に載置され、第１〜第５の拡径部９１〜９５がワーク収容溝１２の底壁１３から浮いた状態になる。 Then, when the workpiece 90 is accommodated in the workpiece accommodation groove 12, as shown in FIG. 6, the portion sandwiched between the first enlarged diameter portion 91 and the second enlarged diameter portion 92 in the shaft portion 90S, The portion sandwiched between the third enlarged portion 93 and the fourth enlarged portion 94 and the portion sandwiched between the fourth enlarged portion 94 and the fifth enlarged portion 95 are respectively the first bridge. The first to fifth enlarged diameter portions 91 to 95 are placed on the protrusion 71, the third bridging protrusion 73, and the fourth bridging protrusion 74, and are lifted from the bottom wall 13 of the workpiece accommodating groove 12. It becomes a state.

なお、ワーク収容溝１２にワーク９０を収容したトレー１０の上に別のトレー１０を積み上げるには、図７の上側に示したように、スタッキングすればよい。すると、下側のトレー１０のワーク収容溝１２と上側のトレー１０の裏側溝部６０の溝開口同士が突き合わされ、ワーク９０は、下側部分がワーク収容溝１２に、上側部分が裏側溝部６０に収容された状態となる。ここで、ワーク９０のシャフト部９０Ｓは、ワーク収容溝１２における第１〜第４の架橋突部７１〜７４の円弧溝７１Ｍ〜７４Ｍと、裏側溝部６０における裏架橋突部６２の裏円弧溝６２Ｍとに受容されて、径方向の移動が規制される。 In order to stack another tray 10 on the tray 10 in which the workpiece 90 is accommodated in the workpiece accommodating groove 12, stacking may be performed as shown in the upper side of FIG. 7. Then, the groove openings of the work receiving groove 12 of the lower tray 10 and the back groove 60 of the upper tray 10 are brought into contact with each other, and the work 90 has a lower portion at the work receiving groove 12 and an upper portion at the back groove 60. It is in a housed state. Here, the shaft portion 90 S of the work 90 includes arc grooves 71 M to 74 M of the first to fourth bridging protrusions 71 to 74 in the work accommodating groove 12 and a back arc groove 62 M of the back bridging protrusion 62 in the back side groove part 60. And the movement in the radial direction is restricted.

図８に示すように、ワーク収容溝１２にワーク９０が収容された状態では、ワーク９０の第５の拡径部が、第５の架橋突部７５と末端突部７６との間に配置される。そして、シャフト部９０Ｓの端面９０Ｍが末端突部７６に突き合わされ、第５の拡径部９５が第５の架橋突部７５に突き合わされることで、ワーク９０の軸方向の移動が規制される。 As shown in FIG. 8, in a state where the workpiece 90 is accommodated in the workpiece accommodation groove 12, the fifth diameter enlarged portion of the workpiece 90 is disposed between the fifth bridging protrusion 75 and the terminal protrusion 76. The Then, the end surface 90M of the shaft portion 90S is abutted against the end protrusion 76, and the fifth enlarged diameter portion 95 is abutted against the fifth bridging protrusion 75, whereby the movement of the workpiece 90 in the axial direction is restricted. .

ここで、軸方向移動規制突部７７は、第５の拡径部９５の外周面よりもシャフト部９０Ｓの中心軸寄りに配置されて、第５の拡径部９５の端面９５Ｍと当接可能となっている。また、突部近傍孔７８は、第５の拡径部９５の外周部を受容可能となっている。これらにより、第５の拡径部９５の外周面とトレー１０との接触が防がれ、第５の拡径部９５の外周面に傷が付くことが防がれる。しかも、突部近傍孔７８は、傾斜側壁７５Ｈにおいて、円弧溝７５Ｍから溝幅方向の両側に離れた２位置間に挟まれた帯状の領域を切除して形成されているので、ワーク９０が中心軸回りの任意の回転位置に配置されても、第５の拡径部９５と傾斜側壁７５Ｈとの干渉を避けることができる。 Here, the axial movement restricting protrusion 77 is disposed closer to the center axis of the shaft portion 90S than the outer peripheral surface of the fifth enlarged diameter portion 95, and can come into contact with the end face 95M of the fifth enlarged diameter portion 95. It has become. Further, the protrusion vicinity hole 78 can receive the outer peripheral portion of the fifth enlarged diameter portion 95. As a result, the contact between the outer peripheral surface of the fifth enlarged diameter portion 95 and the tray 10 is prevented, and the outer peripheral surface of the fifth enlarged diameter portion 95 is prevented from being damaged. In addition, since the protrusion vicinity hole 78 is formed by cutting out a band-like region sandwiched between two positions separated from the arc groove 75M on both sides in the groove width direction on the inclined side wall 75H, the workpiece 90 is centered. Even if it is arranged at an arbitrary rotational position around the axis, interference between the fifth enlarged diameter portion 95 and the inclined side wall 75H can be avoided.

なお、本実施形態では、第１〜第４の架橋突部７１〜７４の円弧溝７１Ｍ〜７４Ｍが本発明の「径方向移動規制部」に相当する。また、第５の架橋突部７５が本発明の「膨出突部」に、傾斜側壁７５Ｈが本発明の「拡径部対向部」に、円弧溝７５Ｍが本発明の「上面溝」にそれぞれ相当する。 In the present embodiment, the arc grooves 71M to 74M of the first to fourth bridging protrusions 71 to 74 correspond to the “radial movement restricting portion” of the present invention. In addition, the fifth bridging protrusion 75 is the “bulging protrusion” of the present invention, the inclined side wall 75H is the “expanded diameter portion facing portion” of the present invention, and the arc groove 75M is the “upper surface groove” of the present invention. Equivalent to.

次に、トレー１０の製造方法について説明する。具体的には、トレー１０は、図１０に示した射出成形金型１００にて樹脂を成形することで製造される。射出成形金型１００は、トレー１０の上面側、即ち、ワーク収容溝１２、土手部４０等を成形する上金型１０１と、トレー１０の下面側、即ち、裏側溝部６０、裏側土手部６１等を成形する下金型１０２とで構成されている。そして、それら上下の金型１０１，１０２を閉じた状態で射出成形金型１００内に溶融状態の樹脂を射出した後、その樹脂を冷却固化することで、トレー１０が得られる。 Next, a method for manufacturing the tray 10 will be described. Specifically, the tray 10 is manufactured by molding a resin with the injection mold 100 shown in FIG. The injection mold 100 includes an upper mold 101 for molding the upper surface side of the tray 10, that is, the workpiece receiving groove 12, the bank portion 40, and the like, and a lower surface side of the tray 10, that is, the back groove portion 60, the back bank portion 61, and the like. And a lower mold 102 for molding the mold. Then, after injecting molten resin into the injection mold 100 with the upper and lower molds 101 and 102 closed, the tray 10 is obtained by cooling and solidifying the resin.

ここで、軸方向移動規制突部７７は、第５の架橋突部７５の傾斜側壁７５Ｈからワーク収容溝１２の長手方向に突出しているので、アンダーカット形状となるようにも思える。しかしながら、本実施形態のトレー１０では、真上から見て軸方向移動規制突部７７と重なる部分に突部近傍孔７８が形成されているので、実際には、軸方向移動規制突部７７はアンダーカット形状とならず、射出成形金型１００にスライド型等を設ける必要がなくなる。以上が、トレー１０の製造方法の説明である。 Here, since the axial movement restricting protrusion 77 protrudes from the inclined side wall 75H of the fifth bridging protrusion 75 in the longitudinal direction of the work accommodating groove 12, it seems to be an undercut shape. However, in the tray 10 of this embodiment, since the protrusion vicinity hole 78 is formed in a portion overlapping with the axial movement restricting protrusion 77 when viewed from directly above, the axial movement restricting protrusion 77 is actually There is no need to provide a slide mold or the like in the injection mold 100 without an undercut shape. The above is the description of the method for manufacturing the tray 10.

本実施形態のトレー１０の構成に関する説明は以上である。次に、トレー１０の作用効果について説明する。本実施形態のトレー１０では、真上から見て軸方向移動規制突部１０と重なる部分全体を含む範囲に突部近傍孔７８を貫通形成したので、従来のようなアンダーカット形状とならず、射出成形金型１００の製作費を従来より低減させて製造コストを抑えることができる。 This completes the description of the configuration of the tray 10 of the present embodiment. Next, the effect of the tray 10 will be described. In the tray 10 of the present embodiment, since the protrusion vicinity hole 78 is formed so as to penetrate the range including the entire portion overlapping the axial movement restricting protrusion 10 when viewed from directly above, it does not have the conventional undercut shape, The manufacturing cost of the injection mold 100 can be reduced as compared with the conventional manufacturing cost.

また、ワーク９０が空の状態でトレー１０同士を積み上げたとき（ネスティングしたとき）に、下側のトレー１０の軸方向移動規制突部７７が、上側のトレー１０の突部近傍孔７８に受容されることで、下側のトレー１０の第５の架橋突部７５が上側のトレーの第５の裏中間溝８５に嵌合されるので、トレー１０同士の積み上げ高さを抑えることができ、複数の空のトレー１０の搬送、収納等が容易になる。 Further, when the trays 10 are stacked with the workpiece 90 empty (when nesting is performed), the axial movement restricting protrusion 77 of the lower tray 10 is received in the protrusion vicinity hole 78 of the upper tray 10. Since the fifth bridging protrusion 75 of the lower tray 10 is fitted into the fifth back intermediate groove 85 of the upper tray, the stacked height between the trays 10 can be suppressed, A plurality of empty trays 10 can be easily transported and stored.

しかも、突部近傍孔７８は、シャフト部９０Ｓと略同心円弧状の円弧溝７５Ｍを上面に有した第５の架橋突部７５の傾斜側壁７５Ｈのうちの円弧溝７５Ｍから両側方に離れた２位置間の全体を切除して形成されているので、軸方向移動規制突部７７の突出量を小さくしても、突部近傍孔７８により傾斜側壁７５Ｈと第５の拡径部９５との干渉を回避することができる。 Moreover, the protrusion vicinity hole 78 is located at two positions away from the circular groove 75M of the inclined side wall 75H of the fifth bridging protrusion 75 having an arc groove 75M substantially concentric with the shaft 90S on the upper surface. Therefore, even if the protrusion amount of the axial movement restricting protrusion 77 is reduced, the protrusion vicinity hole 78 causes interference between the inclined side wall 75H and the fifth enlarged diameter portion 95. It can be avoided.

［他の実施形態］
本発明は、上記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。 [Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

（１）図１１に示すように、第５の架橋突部７５の末端突部７６側の壁を上下方向と略平行な起立壁７５Ｋ（本発明の「拡径部対向部」に相当する。）とし、その起立壁７５Ｋから軸方向移動規制突部７７Ｖを突出させてもよい。なお、図１１の例では、突部近傍孔７８Ｖは、上記第１実施形態と同様に、起立壁７５Ｋと底壁１３との両方に亘って形成されている。本構成においても、金型の製造費を低減することができると共に、トレー１０をネスティングしたときの積み上げ高さを抑えることができる。 (1) As shown in FIG. 11, the wall on the terminal protrusion 76 side of the fifth bridging protrusion 75 corresponds to an upright wall 75K substantially parallel to the vertical direction (corresponding to the “diameter-enlarged portion facing portion” of the present invention). ), And the axial movement restricting protrusion 77V may protrude from the standing wall 75K. In the example of FIG. 11, the protrusion vicinity hole 78 V is formed over both the standing wall 75 K and the bottom wall 13 as in the first embodiment. Also in this configuration, the manufacturing cost of the mold can be reduced, and the stacked height when the trays 10 are nested can be suppressed.

（２）上記（１）の構成において、突部近傍孔７８Ｖは、底壁１３にのみ設けられてもよい。本構成によっても、軸方向移動規制突部７７Ｖがアンダーカット形状とならないので、金型の製造費を低減することができる。 (2) In the configuration of (1) above, the protrusion vicinity hole 78 V may be provided only in the bottom wall 13. Even with this configuration, the axial movement restricting protrusion 77V does not have an undercut shape, so that the manufacturing cost of the mold can be reduced.

（３）上記実施形態では、本発明の「拡径部対向部」が、第５の架橋突部７５の傾斜側壁７５Ｈであったが、図１２に示すように、ワーク収容溝１２に第５の架橋突部７５を形成する代わりに上下方向に延びた末端起立壁７５Ｗを形成し、その末端起立壁７５Ｗから軸方向移動規制突部７７Ｗを突出させると共に、底壁１３のうち軸方向移動規制突部７７Ｗと重なる部分に突部近傍孔７８Ｗを形成してもよい。 (3) In the embodiment described above, the “diameter-enlarged portion facing portion” of the present invention is the inclined side wall 75H of the fifth bridging protrusion 75, but as shown in FIG. Instead of forming the bridging projection 75, a vertical standing wall 75 W extending in the vertical direction is formed, and the axial movement restricting projection 77 W is projected from the terminal standing wall 75 W. You may form the protrusion vicinity hole 78W in the part which overlaps with the protrusion 77W.

（４）軸方向移動規制突部７７及び突部近傍孔７８を、ワーク収容溝１２の長手方向の中間部に配置された架橋突部、例えば、第２の架橋突部７２に形成して、第３の拡径部９３の端面と当接するようにしてもよい。なお、上記実施形態によれば、軸方向移動規制突部７７と末端突部７６との距離が短いので、公差が小さくなる。 (4) The axial movement restricting protrusion 77 and the protrusion vicinity hole 78 are formed in a bridging protrusion, for example, the second bridging protrusion 72, which is disposed in the intermediate portion in the longitudinal direction of the workpiece housing groove 12, You may make it contact | abut with the end surface of the 3rd enlarged diameter part 93. FIG. In addition, according to the said embodiment, since the distance of the axial direction movement control protrusion 77 and the terminal protrusion 76 is short, a tolerance becomes small.

（５）軸方向移動規制突部７７を長くして、ワーク収容溝１２にワーク９０を収容したときに、第５の拡径部９５の外周部が突部近傍孔７８に受容されない構成としてもよい。なお、この構成では、突部近傍孔７８は、真上から見たときに軸方向移動規制突部７７と重なる部分にのみ配置されればよい。 (5) Even when the axial movement restricting projection 77 is lengthened and the workpiece 90 is accommodated in the workpiece accommodation groove 12, the outer peripheral portion of the fifth enlarged diameter portion 95 is not received in the projection vicinity hole 78. Good. In this configuration, the protrusion vicinity hole 78 only needs to be disposed at a portion overlapping the axial movement restricting protrusion 77 when viewed from directly above.

（６）上記実施形態では、ワーク９０の第１〜第５の拡径部９１〜９５がカムであったが、ギヤであってもよい。 (6) In the above embodiment, the first to fifth diameter enlarged portions 91 to 95 of the workpiece 90 are cams, but may be gears.

（７）図１３に示すように、上記実施形態で末端突部７６を設ける代わりに、第５の架橋突部７５と略対称な形状の第６の架橋突部７６Ｘを設け、第５と第６の架橋突部７５，７６Ｘの軸方向移動規制突部７７，７７が、ワーク９０の第５の拡径部９５の端面９５Ｍに突き当てられる構成としてもよい。 (7) As shown in FIG. 13, instead of providing the end protrusion 76 in the above embodiment, a sixth bridging protrusion 76X having a shape substantially symmetric to the fifth bridging protrusion 75 is provided. A configuration may be adopted in which the axial movement restricting protrusions 77 and 77 of the six bridging protrusions 75 and 76X are abutted against the end face 95M of the fifth enlarged diameter portion 95 of the workpiece 90.

（８）上記実施形態における、第５の架橋突部７５の円弧壁７５Ａの厚さを円弧溝７５Ｍが延びる方向で均一にし、軸方向移動規制突部７７の突出方向の中間位置より基端側を円弧壁７５Ａと同じ厚さにすると共に、その中間位置よりも先端側を上方に膨出させて肉厚にした構成としてもよい。本構成によっても、軸方向移動規制突部７７の強度アップが図られる。 (8) In the above-described embodiment, the thickness of the arc wall 75A of the fifth bridging projection 75 is made uniform in the direction in which the arc groove 75M extends, and the proximal side from the intermediate position in the projection direction of the axial movement regulating projection 77 May be made the same thickness as the arc wall 75A, and the tip side may bulge upward from the middle position to increase the thickness. Also with this configuration, the strength of the axial movement restricting projection 77 can be increased.

（９）上記実施形態では、軸方向移動規制突部７７は、ワーク９０における第５の拡径部９５の端面９５Ｍのうち第５の拡径部９５の外周面から離れた位置に当接する構成であったが、ワーク９０が第５の拡径部９５の外周面にトレー１０が接触しても支障がないものであれば、軸方向移動規制突部７７が端面９５Ｍの外周部に当接する構成であってもよい。 (9) In the above embodiment, the axial direction movement restricting protrusion 77 is in contact with a position away from the outer peripheral surface of the fifth enlarged portion 95 in the end face 95M of the fifth enlarged portion 95 in the work 90. However, if the workpiece 90 does not hinder the tray 10 from coming into contact with the outer peripheral surface of the fifth enlarged diameter portion 95, the axial movement restricting projection 77 contacts the outer peripheral portion of the end surface 95M. It may be a configuration.

１０トレー
７１Ｍ，７３Ｍ，７４Ｍ円弧溝（径方向移動規制部）
７５第５の架橋突部（膨出突部）
７５Ｈ傾斜側壁（拡径部対向部）
７５Ｗ末端起立壁（拡径部対向部）
７５Ｋ起立壁（拡径部対向部）
７５Ｍ円弧溝（上面溝）
７７軸方向移動規制突部
９０ワーク
９０Ｓシャフト部
９５第５の拡径部（拡径部） 10 Tray 71M, 73M, 74M Circular groove (radial movement restricting part)
75 Fifth bridging protrusion (bulging protrusion)
75H Inclined side wall (diameter facing part)
75W Terminal standing wall (expanded part facing part)
75K Standing wall (diameter facing part)
75M circular groove (top groove)
77 Axial movement restricting protrusion 90 Work 90S Shaft portion 95 Fifth enlarged diameter portion (increased diameter portion)

Claims

シャフト部から拡径部が側方に張り出した構造のワークのうち前記拡径部の外周面が浮いた状態になるよう前記シャフト部が載置されるトレーであって、
前記シャフト部の外周面に当接してその径方向の移動を規制する径方向移動規制部と、
前記シャフト部より下方で前記拡径部の端面に対向する拡径部対向部から突出し、前記拡径部の端面に突き合わされて前記ワークの軸方向の移動を規制する軸方向移動規制突部とを備えた樹脂製のトレーにおいて、
真上から見て前記軸方向移動規制突部と重なる部分全体を含む範囲に突部近傍孔を貫通形成したことを特徴とするトレー。 A tray on which the shaft portion is placed so that an outer peripheral surface of the enlarged diameter portion of the workpiece having a structure in which the enlarged diameter portion projects sideways from the shaft portion,
A radial movement restricting portion that abuts on the outer peripheral surface of the shaft portion and restricts its radial movement;
An axial movement restricting protrusion that protrudes from an enlarged-diameter facing portion that faces the end face of the enlarged-diameter portion below the shaft portion and that abuts against the end face of the enlarged-diameter portion to restrict axial movement of the workpiece; In the resin tray with
A tray in which a protrusion vicinity hole is formed so as to penetrate in a range including the entire portion overlapping with the axial movement restricting protrusion as viewed from directly above.

前記軸方向移動規制突部を有した前記拡径部対向部は、前記トレーの上面側に膨出しかつ裏側が凹み、前記ワークの軸方向で下方に向かって末広がり形状となった膨出突部の傾斜側壁として備えられると共に、前記傾斜側壁のうち前記軸方向移動規制突部より下側部分が前記突部近傍孔によって切除され、
前記ワークが空の状態で前記トレー同士を上下に積み重ねたときに、下側の前記トレーの前記軸方向移動規制突部が、上側の前記トレーの前記突部近傍孔に受容されて、下側の前記トレーの前記膨出突部が上側の前記トレーの前記膨出突部の裏側に嵌合されるように構成されたことを特徴とする請求項１に記載のトレー。 The enlarged-diameter opposing portion having the axial movement restricting protrusion is bulged on the upper surface side of the tray and recessed on the back side, and has a bulging protrusion shape that expands downward in the axial direction of the workpiece. And the lower portion of the inclined side wall from the axial movement restricting protrusion is cut out by the protrusion vicinity hole,
When the trays are stacked up and down with the workpiece empty, the axial movement restricting protrusion of the lower tray is received in the hole near the protrusion of the upper tray, and the lower side The tray according to claim 1, wherein the bulging protrusion of the tray is configured to be fitted to the back side of the bulging protrusion of the upper tray.

前記膨出突部の上面は、水平でかつ前記シャフト部と略同心円弧状の溝内面を有した上面溝を備え、
前記軸方向移動規制突部は、前記傾斜側壁における前記上面溝の開口縁に配置され、
前記突部近傍孔は、前記傾斜側壁のうち前記上面溝から両側方に離れた２位置間の全体を切除してなることを特徴とする請求項２に記載のトレー。 The upper surface of the bulging protrusion is provided with an upper surface groove having a groove inner surface that is horizontal and substantially concentric with the shaft portion.
The axial movement restricting protrusion is disposed at an opening edge of the upper surface groove in the inclined side wall,
3. The tray according to claim 2, wherein the protrusion vicinity hole is formed by cutting the entire portion between two positions of the inclined side wall that are separated from the upper surface groove on both sides.