JP7199696B2 - tray - Google Patents

Description

The present disclosure relates to a tray on which a workpiece having a shape projecting from a shaft portion is placed.

Conventionally, as this type of tray, there is known a tray in which a shaft portion receiving groove for receiving a shaft portion and a protrusion portion receiving portion for receiving a protrusion portion are formed (see, for example, Patent Document 1).

Japanese Utility Model Laid-Open No. 7-17786 (Fig. 2)

In the above-described conventional tray, it is required to restrict the rotation of the work. In particular, when the projecting portion of the work protrudes from a portion of the shaft portion in the circumferential direction, when the work rotates, problems may arise such as the projecting portion popping out to the opposite side of the tray and being damaged.

To achieve the above object, the invention of claim 1 is a tray on which a plurality of workpieces having a shape projecting radially from a portion of a shaft portion having a circular cross section in the circumferential direction are placed, the tray comprising: Shaft portion receiving grooves arranged side by side for receiving each of the shaft portions of the plurality of workpieces ; Rotation that interferes when a projecting portion receiving portion that is received in a posture projecting obliquely downward and the projecting portion of the work that is arranged at the one end rotates upward about the shaft portion. a restricting portion , wherein the distance between the centers of the shaft portion receiving grooves is smaller than the distance between the tip portion of the projecting portion passing through the central axis of the shaft portion and the outer peripheral surface of the shaft portion; and the projecting portion received in the projecting portion receiving portion is configured not to abut on the adjacent work, and when the projecting portion of the work other than the end portion on the one side rotates upward, , is a tray whose rotation is restricted by interference with the adjacent work .
According to the second aspect of the invention, the projection receiving portion includes a first inclined portion inclined obliquely downward along the lower surface side of the projected portion and a second inclined portion extending obliquely upward from an end portion of the first inclined portion. a sloped portion;
2. The tray according to claim 1, wherein the tip of the protrusion received in the protrusion receiving section is received in a space above the first inclined section and the second inclined section.
According to the third aspect of the invention, a back side receiving portion is formed on the back side of the tray for receiving the shaft portion of the work on the lower tray when the trays on which the work are placed are stacked. 3. The tray according to claim 1 or 2, wherein the upper tray is supported via the workpiece.

The invention of claim 4 is the tray according to any one of claims 1 to 3 , wherein the rotation restricting portion is composed of a vertical wall extending in the vertical direction.

According to the invention of claim 5 , the vertical wall that interferes with the projecting portion of the workpiece disposed near the side wall of the tray is formed on the side wall, and the upper end of the vertical wall is located below the upper end of the side wall. 5. The tray according to claim 4 .

In the tray of claim 1, when the projecting portion of the work rotates upward about the shaft portion, it interferes with the rotation restricting portion, so that the rotation of the work can be restricted. Further, by making the distance between the centers of the shaft receiving grooves smaller than the distance between the tip of the projecting portion passing through the central axis of the shaft and the outer peripheral surface of the shaft, the work can be packed and accommodated. It is possible to improve the accommodation efficiency.
According to claim 2, since the protrusion receiving portion is formed with the first inclined portion that slopes obliquely downward along the lower surface side of the protrusion, it is possible to stably receive the protrusion.

According to claim 4 , since the rotation restricting portion is made up of a vertical wall extending in the vertical direction, the work can be put in and taken out more smoothly than, for example, a configuration in which a restricting piece facing the received projecting portion from above is provided. can be done.

According to claim 5 , since the side walls are formed with vertical walls, the workpieces can be accommodated up to the end of the tray, and the accommodation efficiency can be improved. In addition, since the upper end of the vertical wall is positioned lower than the upper end of the side wall, when the trays are stacked, the vertical wall does not easily interfere with the upper tray, thereby reducing the stacking height of the trays . be able to.

A perspective view of a state in which a work is placed on a tray according to the present disclosure. Perspective view of workpiece Cross section of workpiece Perspective view of tray Partially enlarged perspective view of the tray Cross section of tray Perspective view of the underside of the tray Partially enlarged perspective view of the back side of the tray Enlarged perspective view near the vertical wall of the tray Enlarged perspective view of the back side near the vertical wall of the tray Sectional view of the tray with workpieces placed on it Partially enlarged cross-sectional view of a tray with workpieces placed on it Top view of the tray with workpieces placed on it Perspective view of stacked trays on which workpieces are placed Sectional view of stacked trays on which workpieces are placed Sectional view of stacked trays

An embodiment of the tray 10 shown in FIGS. 1-16 will now be described. As shown in FIG. 1, the tray 10 of this embodiment is for placing a long work 90 thereon.

A workpiece 90 of this embodiment shown in FIG. The projecting portion 93 has a shape projecting sideways. The enlarged diameter portion 92 and the protruding portion 93 are rotatably attached to the shaft portion 91 . The protruding portion 93 has a substantially rectangular plate-like shape standing substantially perpendicularly from the outer surface of the enlarged diameter portion 92 and has a length approximately equal to the radius of the enlarged diameter portion 92 .

The width of the projecting portion 93 is larger than the width of the enlarged diameter portion 92 , and the portion of the proximal end portion of the projecting portion 93 located outside the enlarged diameter portion 92 is the axial side surface of the enlarged diameter portion 92 . 92A diagonally. Further, of the outer peripheral edge of the projecting portion 93, a facing side portion 93A facing in the axial direction of the shaft portion 91, an inclined side portion 93B extending from the end of the facing side portion 93A to the side surface 92A of the enlarged diameter portion 92, is formed with a projecting piece 94 standing only on one side (see FIG. 3).

The tray 10 shown in FIG. 4 is a resin vacuum-formed article, and has a rectangular planar shape. Hereinafter, the longitudinal direction of the tray 10 will be referred to as a first horizontal direction H1, and the lateral direction will be referred to as a second horizontal direction H2. The tray 10 is provided with a horizontal strip-shaped outer frame flange portion 11 over the entire outer edge portion, and the inner portion of the outer frame flange portion 11 is provided with a bank portion 12 and a concave portion parallel to each other in the first horizontal direction H1. 40 are arranged alternately. The bank portions 12 and the recesses 40 are arranged so that both ends in the first horizontal direction H1 are the recesses 40. When distinguishing the bank portions 12, the first to the first from the left in FIG. 6 bank portions 12A to 12F, and when distinguishing the recesses 40, they are referred to as first to seventh recesses 40A to 40G.

As shown in FIGS. 4 and 5, of the outer frame flange portion 11, from the position near the sixth bank portion 12F on the outer edge of the seventh recess portion 40G to the first recess portion 40A side portion (hereinafter referred to as "narrow portion 11A ”) is smaller in width than the opposite side portion (hereinafter referred to as “wide portion 11B”). The outer edges of the narrow portion 11A and the wide portion 11B are flush with each other, and the wide portion 11B protrudes inward from the narrow portion 11A.

As shown in FIGS. 4 and 6, each bank portion 12 has a ceiling wall 13 that is flush with the outer frame flange portion 11. On the ceiling wall 13, all the bank portions 12 are linearly aligned. A plurality of (five in this embodiment) extended shaft receiving grooves 15 are formed side by side. These shaft portion receiving grooves 15 are arcuate along the outer peripheral surface of the shaft portion 91 of the workpiece 90 and have a depth of about 1/3 of the diameter of the shaft portion 91 . The distance between the centers of the shaft portion receiving grooves 15 (marked a in FIG. 7) is greater than the diameter of the shaft portion 91, and the distance from the tip of the projecting portion 93 passing through the central axis of the shaft portion 91 to the enlarged diameter portion 92 is greater than the diameter of the shaft portion 91. It is smaller than the distance to the outer peripheral surface (symbol b in FIG. 7).

As shown in FIG. 6, between both ends of the ceiling wall 13 of the bank portion 12 in the second horizontal direction H2 and the narrow portion 11A of the outer frame flange portion 11 described above, there is a stepped depression. Square grooves 14A and 14B are formed. The square grooves 14A and 14B have different widths. Hereinafter, in the second horizontal direction H2, the side of the square groove portion 14A with a narrow width (the left side in FIG. 6) is referred to as "one end side", and the side of the square groove portion 14B with a wide width (the right side in FIG. 6) is referred to as the "other end side". . By forming these rectangular grooves 14A and 14B, the side walls thereof function as ribs, and the strength of the tray 10 is improved.

As shown in FIG. 4 , the recess 40 has bottom walls 41 , 42 and 43 at positions lower than the ceiling wall 13 of the bank portion 12 . The adjacent ceiling wall 13 and bottom walls 41, 42, 43 are connected by an inclined wall 20 inclined so that the concave portion 40 tapers. The bank portion 12 is formed by the ceiling wall 13 and the inclined walls 20 on both sides thereof, and recesses are formed between adjacent bank portions 12 and between the bank portion 12 and side walls 26 and 27 to be described later. I'm at 40.

Of the recesses 40, the bottom walls 41 of the first, second, fifth to seventh recesses 40A, 40B, 40E, 40F, and 40G are shaped like horizontal plates. Further, the bottom wall 41 is formed with a bulging portion 44 that extends coaxially with the shaft portion receiving groove 15 and bulges upward. When viewed from the rear side, the bulging portion 44 forms an arcuate groove 45 as shown in FIG. Details of the bottom walls 42, 43 of the third and fourth recesses 40C, 40D will be described later.

As shown in FIG. 4, side walls 26 to 29 extend obliquely inward from the entire inner edge of the outer frame flange portion 11 . Specifically, as shown in FIGS. 4 and 7, the side wall 26 on the side of the first recess 40A in the first horizontal direction H1 is formed between the inner edge portion of the outer frame flange portion 11 and the bottom wall 41 of the first recess 40A. are connected flatly between The side wall 27 on the side of the seventh recess 40G in the first horizontal direction H1 extends flat from the inner edge of the outer frame flange portion 11 to a position below half the height of the tray 10, as shown in FIG. It has a wall 27A and a second wall 27B connecting the first wall 27A and the bottom wall 41 of the seventh recess 40G while expanding upward.

As shown in FIG. 4, the side wall 28 on the other end side (wide square groove portion 14B side) of the second horizontal direction H2 hangs down from the inner edge portion of the outer frame flange portion 11 and forms first to seventh concave portions 40A to 40A. It is connected to the bottom walls 41, 42, 43 of 40G and the bottom of the square groove portion 14B. That is, part of the side wall 28 constitutes the outer wall of the square groove portion 14B. Also, the portions of the side wall 28 located at the side edges of the first, second, fifth and seventh recesses 40A, 40B, 40E, and 40G are located between the inner edge of the outer frame flange portion 11 and the bottom wall 41. flatly connected between them. The portion located at the side edge of the seventh concave portion 40G hangs down from the inner edge portion of the wide portion 11B, so it is formed closer to the inside than the other portions and extends vertically between them. are connected by a connecting wall 28A. 4 and 6, the portions located at the side edges of the third, fourth and sixth recesses 40 step inward and hang down. The step surface 28B is flush with the bottom surface of the square groove portion 14B.

As shown in FIG. 4, the side wall 29 on one end side (narrow square groove portion 14A side) of the second horizontal direction H2, like the side wall 28 on the other end side, hangs down from the inner edge portion of the outer frame flange portion 11, It is connected to the bottom walls 41, 42, 43 of the first to seventh recesses 40A to 40G and the bottom of the rectangular groove 14A. That is, part of the side wall 29 constitutes the outer side wall of the rectangular groove portion 14A. Portions of the side wall 29 located at the side edges of the third, fourth, and seventh recesses 40C, 40D, and 40G provide flatness between the inner edge of the outer frame flange portion 11 and the bottom walls 41, 42, and 43. connected to.

As shown in FIGS. 4 and 7, the portion of the side wall 29 located at the side edge of the first concave portion 40A slopes down from the inner edge portion of the outer frame flange portion 11 and bends inward along the way. is connected to the bottom wall 41. Further, the portions located at the side edges of the second, fifth and sixth recesses 40B, 40E and 40F are stepped inward and hang down. Among them, the stepped surfaces 29A of the portions located at the side edges of the fifth and sixth recesses 40E and 40F are flush with the bottom surface of the square groove portion 14A. 5 and 8, the bottom wall of the square groove portion 14A and the end portion of the wide portion 11B of the outer frame flange portion 11 are connected by an inclined portion 29B. In addition, the portion located at the side edge of the second recess 40B is connected to the bottom wall 41 after moving further inward in a stepped manner. This step surface 29C is inclined with respect to the horizontal direction.

Now, as shown in FIGS. 4 and 6, the bottom walls 42, 43 of the third and fourth recesses 40C, 40D of the recesses 40 are the first, second, fifth to seventh recesses 40A, 40B. , 40E, 40F, and 40G. As shown in FIG. 6, the bottom walls 42 and 43 of the third and fourth recesses 40C and 40D have a horizontal portion 46 and an end portion on one end side of the horizontal portion 46 (narrow square groove portion 14A side). Arc portion 47 that extends slightly downward in a downward arc from the arc portion 47, a first inclined portion 48 that extends slightly downward from the end of the arc portion 47, and a gentle bend from the end of the first inclined portion 48. It has a shape in which five constituent portions 52 each including a second inclined portion 49 extending obliquely downward and a third inclined portion 50 extending obliquely upward from the end portion of the second inclined portion 49 are connected.

Each constituent portion 52 is arranged such that the boundary portion between the arc portion 47 and the first inclined portion 48 is positioned on the extension line of the shaft portion receiving groove 15 . Further, an extension portion 51 extends from the horizontal portion 46 of the component portion 52 on the other end side in the second horizontal direction H2 (the side of the wide square groove portion 14B) to the side wall 28 and is connected thereto. The third inclined portion 50 is shorter than the other constituent portions 52 in the constituent portion 52 on the one end side (the side of the narrow square groove portion 14A) in the second horizontal direction H2.

The third and fourth recesses 40C, 40D are capable of receiving the enlarged diameter portion 92 of the workpiece 90. As shown in FIG. In this embodiment, an example in which the enlarged diameter portion 92 is received in the third recess 40C will be described. As shown in FIG. 1, when the workpiece 90 is placed on the tray 10 with the protruding portion 93 facing downward (the side of the narrow square groove portion 14A), the shaft portion 91 moves into the shaft portion receiving groove 15 ( 4), and the enlarged diameter portion 92 and the projecting portion 93 are received in the third recess 40C. At this time, as shown in FIG. 12, the expanded diameter portion 92 is slightly lifted from the bottom wall 42 . Further, the protruding portion 93 is arranged on the first to third inclined portions 48 to 50 so that the tip thereof is received in the space above the second inclined portion 49 and the third inclined portion 50 . That is, above the first to third inclined portions 48 to 50 is a protrusion receiving portion 55 for receiving the protrusion 93 . Further, as shown in FIG. 13, when viewed from above, the workpieces 90 are such that the projecting portions 93 and the enlarged diameter portions 92 of the adjacent workpieces 90 overlap each other.

When the work 90 is placed on the tray 10 as described above, as shown in FIG. 11, the shaft portion 91 comes into contact with the shaft portion receiving groove 15, thereby restricting the movement of the work 90 in the radial direction. In addition, as shown in FIG. 1, the protrusion 93 abuts against the inclined walls 20 on both sides of the third recess 40C, thereby restricting the movement in the axial direction.

Here, in the tray 10 of the present embodiment, as shown in FIG. 4, one end of the third and fourth recesses 40C and 40D in the second horizontal direction H2 (the end on the square groove portion 14A side) extends vertically. A vertical wall 56 is formed. As shown in FIGS. 9 and 10, the vertical wall 56 bulges inward from the main body of the side wall 29, and extends from the side edges of the bottom walls 42 and 43 of the third and fourth recesses 40C and 40D. standing upwards from The upper end of the vertical wall 56 is positioned below half the height between the bottom walls 42 and 43 and the inner edge of the outer frame flange portion 11 . The vertical wall 56 is located in the middle portion of the bottom walls 42 and 43 in the first horizontal direction H1, and its length is smaller than the axial length of the projecting portion 93 of the workpiece 90 . The vertical wall 56 of the third recess 40C is arranged farther from the side wall 29 than the vertical wall 56 of the fourth recess 40D.

As shown in FIG. 12, the vertical wall 56 is close to the tip of the protruding portion 93 of the work 90 placed on the farthest one end side (narrower square groove portion 14A side), and moves the work 90 along the shaft portion 91. It is configured so that the tip of the projecting portion 93 intersects an imaginary circular arc locus K drawn upward when rotated about the center. The vertical wall 56 has a length and arrangement that does not interfere with the projecting piece 94 of the projecting portion 93 .

In this embodiment, the enlarged diameter portion 92 and the projecting portion 93 of the workpiece 90 are received in the third recess 40C, but depending on the shape of the workpiece 90, the enlarged diameter portion 92 and the projecting portion may be accommodated in the fourth recess 40D. 93 can be accepted. That is, the tray 10 of this embodiment can be used for two types of works.

The description about the structure of the tray 10 of this embodiment is above. Next, the effects of the tray 10 will be described. Tray 10 is used to accommodate workpieces 90 . The workpiece 90 is placed with the protruding portion 93 directed downward toward one end side (the side of the narrow square groove portion 14A) in the second horizontal direction H2. At this time, since the first inclined portion 48 and the second inclined portion 49 are continuous, the workpiece 90 is placed in a posture in which the projecting portion 93 faces downward from the state in which it is received in the projecting portion receiving portion 55 . Even if it is to be placed, the projection 93 is guided by the first inclined portion 48 toward the second inclined portion 49 and smoothly received by the projection receiving portion 55 without being caught. When viewed from above, the protruding portions 93 and enlarged diameter portions 92 of the adjacent works 90 overlap, so the works can be accommodated smoothly by sequentially placing them from the other end side (the side of the wide square groove portion 14B).

When the workpiece 90 is accommodated in the tray 10, the shaft portion 91 abuts against the shaft portion receiving groove 15, thereby restricting the movement of the workpiece 90 in the radial direction. Since it is retained by the inclined wall 20 of , the movement in the axial direction is also restricted.

Also, when another tray 10 is stacked on the tray 10 accommodating the work 90 (see FIG. 14), as shown in FIG. 90 can be received to stabilize stacking.

By the way, if the workpiece 90 rotates in the shaft part receiving groove 15, the projecting part 93 may face upward and be damaged, or the projecting part 93 may not come into contact with the inclined wall 20. It is conceivable that it will become easier to move in the direction.

On the other hand, in the tray 10 of the present embodiment, a vertical wall 56 is provided in the projecting portion receiving portion 55 at one end (the end portion on the square groove portion 14A side), and the projecting portion 93 of the workpiece 90 rotating upward is provided. Since they interfere, the rotation of the workpiece 90 is restricted. Further, when the work 90 is accommodated in all the shaft portion receiving grooves 15, when the projecting portion 93 rotates upward, the enlarged diameter portion 92 of the work 90 adjacent to the one end side (narrow square groove portion 14A side) is moved. Since it is regulated, the rotation of other works 90 is also regulated. As a result, the projecting portion 93 rotates upward and stops coming into contact with the inclined wall 20, thereby preventing the workpiece 90 from moving in the axial direction.

In addition, since the vertical wall 56 extends in the vertical direction, the workpiece 90 can be smoothly taken in and out without an undercut shape. Furthermore, it becomes unnecessary to provide a slide mold or the like in the mold for vacuum forming, and the cost of the mold can be reduced. Furthermore, since the vertical wall 56 is designed to be lower than the outer frame flange portion 11, as shown in FIG. The stacking height of the trays 10 can be suppressed without interfering with the trays 10, and a plurality of empty trays 10 can be easily transported and stored.

In addition, since the workpieces 90 are arranged so as to partially overlap each other when viewed from above, the storage efficiency can be improved. Furthermore, since the vertical wall 56 is arranged on the side wall 29, the workpieces 90 can be accommodated up to the end of the tray 10, so that the accommodation efficiency can be further improved.

[Other embodiments]
(1) In the above-described embodiment, the workpiece 90 has one projecting portion, but two or more projecting portions may be provided. Further, the shape of the projecting portion is not limited to a plate shape, and may be spherical or the like.

(2) A vertical wall 56 may be provided for each protrusion receiving portion 55 .

(3) In the above embodiment, it was the vertical wall 56 extending vertically that interfered with the protruding portion 93, but it may be inclined as long as it intersects the fictitious circular locus K. FIG.

(4) A configuration in which a restricting piece facing from above is provided on the projecting portion may be employed.

(5) In the above embodiment, the work 90 is regulated in the axial direction by the projecting portion 93 contacting the inclined walls 20 on both sides of the third recess 40C. It may be configured to abut side walls 26,27.

10 Tray 15 Shaft Receiving Groove 20 Inclined Wall 26-29 Side Wall 40 Recess 42 Bottom Wall 55 Projecting Receiving Portion 56 Vertical Wall (Rotation Regulating Part)
90 workpiece 91 shaft portion 92 enlarged diameter portion 93 projecting portion

Claims (5)

A tray on which a plurality of workpieces having a shape projecting radially from a portion of a shaft portion having a circular cross section in the circumferential direction are placed,
shaft portion receiving grooves arranged side by side for receiving each of the shaft portions of the plurality of works ;
a projecting portion receiving portion that receives the projecting portion in a posture projecting obliquely downward from the shaft portion to one side in the horizontal direction of the shaft portion receiving grooves when viewed from the axial direction ;
a rotation restricting portion that interferes when the projecting portion of the work arranged at the one end portion rotates upward about the shaft portion ;
The distance between the centers of the shaft portion receiving grooves is smaller than the distance between the tip portion of the protrusion passing through the central axis of the shaft portion and the outer peripheral surface of the shaft portion, and is received in the protrusion portion receiving portion. The protruding portion in the folded state does not come into contact with the adjacent work, and when the protruding portion of the work other than the one end rotates upward, it interferes with the adjacent work. A tray that is restricted from rotating . The projecting portion receiving portion has a first inclined portion inclined obliquely downward along the lower surface side of the projecting portion, and a second inclined portion extending obliquely upward from an end portion of the first inclined portion. ,
2. The tray according to claim 1, wherein the tip of the projection received in the projection receiving portion is received in a space above the first inclined portion and the second inclined portion . On the back side of the tray, a back side receiving portion is formed to receive the shaft portion of the work on the lower tray when the trays on which the work is placed are stacked, and the upper tray is formed with the above-mentioned 3. The tray according to claim 1 or 2, which is supported via a work . 4. The tray according to any one of claims 1 to 3 , wherein the rotation restricting portion comprises a vertical wall extending vertically . 5. The vertical wall that interferes with the projecting portion of the workpiece disposed near the side wall of the tray is formed on the side wall, and the upper end of the vertical wall is located below the upper end of the side wall . Tray as described.

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