JP2001163337A - Tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the stacking workability, and to reduce the weight by improving the strength around corner parts. SOLUTION: The resin tray 12 comprises a flat, rectangular loading part 14 and an erection part 15 to be erected from an outer periphery of the loading part 14 in an outwardly inclined manner, and a flange part 17 extending outwardly is formed on an upper portion of the erection part 15. A swollen portion 20 having a predetermined wall thickness W1 and a predetermined height H1 is formed along the flange part 17 on a corner part 16 of the outer periphery of the erection part 15. A slip part 30 extending toward the other corner part along an upper portion of the swollen part 20 and having a predetermined thickness W2 is formed on a lower surface 17A of the corner part of the flange part 17. When stacking the trays, the slip part 30 of the upper tray 12A and an outer peripheral wall 22 of the swollen part 20 are abutted on an upper surface 15A of the erection part of the lower tray 12B and an inner side surface 15B of the erection part, respectively, to allow the trays to slip in each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray for placing and transporting containers such as tableware.

[0002]

2. Description of the Related Art Trays made of heat-resistant plastic are widely used for business purposes in hospitals, restaurants, etc., and are repeatedly washed or disinfected at high temperatures each time they are used. In addition, when used for business purposes, a large number of trays are used at one time, and each time they are transported and washed. Further, since a large number of trays are stacked and used in terms of workability, transportability, and storability, square trays are often used. As shown in FIGS. 7 to 9, such a conventional tray is formed by injection molding a synthetic resin such as a heat-resistant plastic. As shown in FIG. 7 and FIG. 8, the tray 2 includes a substantially square mounting portion 4 having a corner 3 formed in an arc shape, and a rising portion 5 that rises up from the outer periphery of the mounting portion 4 in an outward direction. And The mounting section 4 has a double-sided 4A,
4B is formed flat. The space between the mounting portion 4 and the rising portion 5 is curved as shown in FIG. The rising portion 5 has a curved corner portion 6 that rises from the arc-shaped corner portion 3 of the mounting portion 4, and a flange portion 7 (see FIG. 9) protruding outward is formed on the outer periphery of the upper surface 5 </ b> A. Is done. Reference numeral 8 denotes a seat formed on the lower surface 4B of the mounting portion 4. As shown in FIG. 9, a large number of such trays 2 are stacked during transportation or storage.

[0003] The conventional tray according to the above configuration is required to have strength enough to withstand repeated use, but is required to be light in weight from the viewpoint of workability. However, the conventional tray 2 according to the above configuration, because it is molded by injection molding, for example, in the case overall shape is square, the resin portion far from the arc portion centered on the center O ₁ (mounting portion Since the resin finally flows into the peripheral portion 4C of the corner portion 4 and the corner portion 6) of the rising portion 5, a plurality of flows of the resin are joined to the peripheral portion 4C or the corner portion 6 with a delay during molding. Weld mark (weld line) L (FIG. 7,
8 (see the broken line in FIG. 8), which may result in a decrease in strength. Further, if the peripheral portion 4C of the corner portion 3 of the mounting portion 4 collides with an object during use, breakage is likely to occur. For this reason, if the mounting portion 4 or the rising portion 5 is made thicker to improve the strength, there is a problem that the weight of the entire tray increases and the workability deteriorates. Further, when used in a hospital or the like, there is a problem that if the tray is heavy, it is difficult for the patient to handle it. Further, in the above-mentioned conventional trays 2, when stacked, as shown in FIG. 9, there is no gap between the upper and lower trays 2 fitted into each other and communicating with the outside. However, there was a problem that workability was poor.

[0004] For this reason, the present inventors aimed at improving the strength at the corners or around the corners to reduce the weight and at the same time to provide a tray with good workability.
As shown in FIG. 1, a tray in which a bulging portion 5B having a predetermined thickness and a predetermined height is formed along the upper end at a corner 6 of the outer periphery of the rising portion 5 has been invented and has already been patented (Patent No. 27).
No. 13270).

[0005]

In the tray according to the above construction, when stacking washed or dried trays after washing, an operator lifts each of the trays after the treatment one by one. After being moved onto the stacked trays, they are sequentially stacked. There is a space for manual movement between these processed trays and the pile of stacked trays, and this space is preferably a distance that can be reached by turning an arm. In order to stack efficiently, when stacking a new tray on the stacked tray, the new tray (upper tray) is aligned with the stacked tray (lower tray) in the stacking direction and It is preferable that the upper tray is slid in an oblique direction with respect to the stacking direction, a part of the outer side of the rising portion of the upper tray is slid along the inner side of the rising portion of the lower tray, and the sheets are stacked. However, in the tray according to the above configuration, since the bulging portion is formed at the corner of the outer periphery of the rising portion, if the inclined upper tray is slid along the inside of the rising portion of the lower tray, the upper Since the outer periphery of the bulging portion of the tray hits the inner side of the rising portion of the lower tray, it is difficult to move and cannot be stacked smoothly, so that there is a problem that the working efficiency at the time of stacking is impaired.

[0006] In the tray according to the above configuration, the collar 1
Since the upper and lower surfaces of the tray 7 are flat, it is difficult to hold the flange 17 with fingers, and when the tray is wet, the tray 17 is easily dropped and the workability is poor.

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above problems, and can improve the workability at the time of stacking, and can also reduce the weight by improving the strength at the corners or around the corners. It is intended to provide trays. Another object of the present invention is to provide a tray capable of improving workability when grasping the tray.

[0008]

The tray according to the present invention comprises:
In a resin tray having a flat non-circular mounting portion and a rising portion that rises inclining outward from the outer periphery of the mounting portion, a flange portion extending outward is provided at the upper portion of the rising portion,
A bulging portion having a predetermined thickness and a predetermined height is formed at a corner of the outer periphery of the rising portion, and a lower surface of the corner portion of the flange portion is continuous with an upper portion of the bulging portion and extends toward another corner portion. A sliding portion having a predetermined thickness is formed.

According to a second aspect of the present invention, a knob protruding downward is formed between the sliding portions on the outside of the lower surface of the flange.

Further, according to the third aspect of the present invention, the knob is formed at a predetermined length substantially at the center between the corners of the flange, and the lower end is flush with the lower surface of the sliding portion. It is located above.

According to a fourth aspect of the present invention, when the swelling portions are stacked, a part of the outer surface abuts on the inner surface of the corner of the rising portion of the lower tray, and communicates with the outside between the upper and lower trays. It is formed so as to create a gap.

According to a fifth aspect of the present invention, when the trays are stacked, the flat lower surface is placed on the upper surface of the flange portion of the lower tray, and the gap between the upper and lower trays communicates with the outside. Is formed so as to cause

According to a sixth aspect of the present invention, the bulging portion extends right and left from the corner of the rising portion by a predetermined length to prevent lateral displacement when the trays are stacked.

According to a seventh aspect of the present invention, the corner of the rising portion is formed so as to be curved and rise from the arc-shaped corner of the mounting portion and be formed in a curved surface.

The tray according to the present invention is a resin tray having a flat non-circular mounting portion and a rising portion which rises from the outer periphery of the mounting portion so as to rise outward.
An outwardly extending flange portion is provided at the upper portion of the rising portion, and a knob portion protruding downward is formed outside the lower surface of the flange portion.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a bottom view of a tray according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of the tray of FIG. As shown in FIGS. 1 and 2, the tray 12 has a substantially rectangular mounting portion 14 and a rising portion 15 that rises from the outer periphery of the mounting portion 14 so as to incline outward. The mounting portion 14 has a corner 13 formed in an arc shape, and upper and lower surfaces 14.
A and 14B are formed flat. The space between the mounting portion 14 and the rising portion 15 is curved as shown in FIG. The corner portion 16 of the rising portion 15 is curved and rises from the arc-shaped corner portion 13 of the mounting portion 14, and has a curved cross section. A flange 17 (see FIG. 3) protruding outward is formed on the outer periphery of the upper surface 15A of the rising portion 15. As shown in FIG. 3, the upper surface 15A of the rising portion 15 matches the upper surface of the flange portion 17, is formed flat, and the outer peripheral side and the inner peripheral side are formed as curved surfaces. As shown in FIG.
4 is a diagonal intersection O ₂ connecting the corners 13 facing each other.
Corner portion 14C is located at a position farthest from the base portion, and a corner portion 14C of the lower surface 14B of the mounting portion 14 includes:
A seat 18 is formed.

As shown in FIG. 3, the tray 12 has a predetermined thickness W1 along the outer peripheral surface of the corner 16 of the rising portion 15.
The bulging portion 20 having the height H1 (see FIG. 3) is formed. The bulging portion 20 has an upper portion formed along the inside of the flange portion 17 and is continuous with a sliding portion 30 (see FIG. 3) described later. The bulging portion 20 strengthens the strength of the corner portion 16 of the rising portion 15 and also strengthens the strength of the corner peripheral portion 14C of the mounting portion 14 located on the lower side near the bulging portion 20. ing. The bulging portion 20 is further extended right and left from the corner portion 16 by a predetermined length so as to prevent lateral displacement when the trays 12 are stacked. Also,
The bulging portion 20 has a lower surface 21 formed flat, and a curved outer peripheral wall 22 forms a corner portion 16 of the rising portion 15.
It almost matches the curved surface of the inner surface or has a slightly different inclination.
2 comes into contact with the inner surface of the corner portion 16 of the rising portion 15 to generate a gap S communicating with the outside with the other lower tray 12. That is, by forming the gap S, it is possible to wash and disinfect by pouring hot water from the outside and dry by blowing hot air in a state where many trays 12 are stacked.

As shown in FIGS. 1 to 3, the tray 12 has a bulge 2
A sliding portion 30 having a predetermined thickness W2 is formed along the upper portion of the zero. The lower surface 31 of the sliding portion 30 is formed flat. Further, in the sliding portion 30, the extension portion 32 is extended toward another corner by a predetermined length L1 (see FIG. 2). The sliding portion 30 forms a guide portion 40 by the sliding portion lower surface 31 and the curved outer peripheral wall 22 of the bulging portion 20. The sliding portion 30 enhances the strength of the corner of the flange portion 17 and
Corner 1 of rising portion 15 located below sliding portion 30
The strength of No. 6 is also enhanced.

That is, the upper tray 12A (see FIG. 3)
The lower surface 31 of the sliding portion can slide on the upper surface 15A of the rising portion 15 of the lower tray 12B (see FIG. 3) (that is, also corresponds to the upper surface of the flange portion 17). When the sliding portion lower surface 31 slides on the rising portion upper surface 15A, the curved outer peripheral wall 22 of the bulging portion 20 of the upper tray 12A becomes the inner surface 15B of the rising portion 15 of the lower tray 12B.
(See FIG. 4) so that the upper tray 12A does not separate from the lower tray 12B. In addition, the sliding part 30 is an extension part 32 toward another corner.
Is formed, even if the upper tray 12A slides in an oblique state with respect to the lower tray 12B, the corner of the rising portion 15 of the upper tray 12A is moved to the lower tray 12B.
Of the upper tray 1
The lower surface 31 of the sliding portion 2A is easily placed on the upper surface 15A of the rising portion, and even if the sliding portion is slid as it is, the curved outer peripheral wall 22 of the bulging portion 20 of the upper tray 12A is placed on the inner surface 15B of the rising portion 15 of the lower tray 12B. Since the upper tray 12A can be slid in the contact state, it is difficult for the upper tray 12A to separate from the lower tray 12B.

As shown in FIG. 1, the knob 12 is formed on the tray 12 so as to protrude downward on the outside of the lower surface 17A of the flange portion 17. The knob 50 is formed substantially at the center between the corners of the flange 17 with a predetermined length L2 so as to be easily picked by a finger. As shown in FIG. 3, the knob 50
The lower end portion 51 is located above the lower surface 31 of the sliding portion 30.

Next, the operation of the tray 12 according to the above configuration will be described. The tray 12 is provided with a flange portion 17 extending outward on the upper portion of the rising portion 15, and a corner 1 on the outer periphery of the rising portion 15.
A bulging portion 2 having a predetermined thickness W1 and a predetermined height H1;
0, and a sliding portion 30 having a predetermined thickness W2 is formed on the corner lower surface 17A of the flange portion 17 along the upper part of the bulging portion 20 toward another corner portion. Top tray (equivalent to lower tray) 12B
Then, a newly stacked tray (corresponding to the upper tray) 12A to be stacked is adjusted in the stacking direction, and is slid forward and backward, and when a slight lateral force is applied, the upper tray 12A slides. The lower surface 31 is provided on the upper surface 15A of one of the rising portions 15 of the lower tray 12B (that is, corresponding to the upper surface of the flange portion 17).
The curved outer peripheral wall 22 of the bulging portion 20 of FIG.
The guide portion 40 of the upper tray 12A can be slid along the rising portion 15 and the flange portion 17 of the lower tray 12B as they are. In addition, since the curved outer peripheral wall 22 of the bulging portion 20 of the upper tray 12A slides on the inner surface 15B of the rising portion 15 of the lower tray 12B, the upper tray 12A is less likely to separate from the lower tray 12B. For this reason, at the time of stacking, it is possible to easily stack without displacement by simply applying a force to the upper tray 12A in the sliding direction.

When a newly completed tray (corresponding to the upper tray) 12A to be newly laminated is shifted into the uppermost tray (corresponding to the lower tray) 12B and shifted in the stacking direction. The curved outer peripheral wall 22 of the bulging portion 20 on the tip side of the upper tray 12 is
And the extended portion 32 of the sliding portion 30 rests on the upper surface 15A of the rising portion, and the guide portion 40 of the upper tray 12A is directly moved to the rising portion 15 and the flange portion 17 of the lower tray 12B. Can be slid along. Moreover, the curved outer peripheral wall 22 of the guide portion 40 of the upper tray 12A is connected to the rising portion 15 of the lower tray 12B.
Of the upper tray 1
2A does not easily come off the lower tray 12B. For this reason,
At the time of stacking, the upper trays 12A can be easily stacked without any positional displacement simply by applying a force from the oblique direction along the rising portion 15. As described above, the provision of the sliding portion 30 allows the upper tray 12A to be stacked while being floated on the lower tray 12B, so that the stacking operation can be performed smoothly.

The tray 12 has a lower surface 17 of the flange 17.
Since the knob portion 50 is formed on the outside of A, even if the tray 12 is wet or the operator is working with wet rubber gloves, the tray 12 can be easily grasped with fingers, and Work efficiency is improved because slippage is prevented.

FIG. 5 shows a modification of the tray 12. FIGS. 5 (A) to 5 (C) show the trays having an elliptical, semi-circular or square shape, respectively. The bulging portion and the sliding portion are formed in the portion shown by the broken line in FIG.

In the tray according to the above embodiment,
Upper and lower trays 12 </ b> A, 12 </ b> A stacked so that the outer peripheral wall 22 of the bulging portion 20 and the inner surface of the corner 16 of the rising portion 15 are in contact with each other.
The gap S is provided between B, but the present invention is not limited to this. The thickness W2 of the sliding portion 30 is set such that the lower surface 31 of the sliding portion 30 is lower than the upper surface of the other tray when the trays 12 are stacked. It may be set so as to be placed at 15A, and the gap S may be provided. As shown in FIG. 3, the knob 50 is formed such that the lower end 51 is located above the lower surface 31 of the sliding portion 30, but is not limited thereto. They may be formed to have the same height. Furthermore, the knob 50 is provided on the outer peripheral side of the flange 17, but is not limited to this. The knob may not be provided on the rising portion 15, and the knob may be provided on the outer periphery of the upper surface of the rising. Good. Further, in the above embodiment, the tray in which the corner of the mounting portion is formed in an arc shape and the corner of the rising portion is formed in a curved surface is described, but the present invention is not limited to this, and the corner or the corner is straight. May be formed, for example, at a right angle in cross section. further,
The height H of the bulging portion 20 is determined by the space S required for washing and drying.
In that case, it is not necessary to secure a larger space, and it is needless to say that the space is determined in consideration of the storability.

[0026]

As described above, according to the present invention, there is provided a resin tray having a flat non-circular mounting portion and a rising portion which rises outwardly from the outer periphery of the mounting portion. In the upper portion of the rising portion, a flange portion extending outward is provided, and a bulging portion having a predetermined thickness and a predetermined height is formed in a corner portion of the outer periphery of the rising portion, and a lower surface of the corner portion of the flange portion is By forming a sliding portion having a predetermined thickness, which is continuous with the upper portion of the bulging portion and extends toward another corner, stacking can be easily performed, and workability at the time of stacking can be improved. At the same time, the strength at the corners or around the corners can be improved to reduce the weight.

According to the second aspect of the present invention, in addition to the above-described effects, the tabs protruding downward between the sliding portions are formed outside the lower surface of the flange portion. Can be improved.

Further, in the invention according to claim 3, the knob portion is formed at a predetermined length substantially at the center between the corners of the flange portion, and the lower end portion has the same height or lower surface as the lower surface of the sliding portion. Since the knobs are located above, the knobs do not interfere with each other when the sliding portion slides on the upper surface of the rising portion, so that the stacking can be performed smoothly.

According to the fourth aspect of the invention, when the trays are stacked, a part of the outer surface of the bulging portion abuts on the inner surface of the corner of the rising portion of the lower tray, and communicates with the outside between the upper and lower trays. By being formed to create a gap, a gap communicating with the outside can be provided between the upper and lower trays stacked, and the work can be performed in a stacked state.

According to the fifth aspect of the present invention, when the trays are stacked, the sliding portion has a flat lower surface placed on the upper surface of the flange portion of the lower tray, and a gap between the upper and lower trays communicating with the outside. Thus, a gap communicating with the outside can be provided between the upper and lower trays stacked, and the work can be performed in a stacked state.

According to the sixth aspect of the present invention, the swelling portion is extended right and left from the corner of the rising portion by a predetermined length, and when the trays are stacked, lateral displacement is prevented, so that the trays can be stacked accurately. Can stabilize piles of stacked trays.

According to the seventh aspect of the present invention, the corner of the rising portion is curved and rises from the arc-shaped corner of the mounting portion and is formed in a curved surface, so that the bulging portion is also formed in a curved surface. Therefore, when stacking, even if sliding in from an oblique direction, stacking can be performed smoothly.

Further, according to the present invention, in a resin tray having a flat non-circular mounting portion and a rising portion that rises outwardly from the outer periphery of the mounting portion, the resin tray has an upper portion on the rising portion. Is provided with a flange portion extending outward, and a knob portion protruding downward is formed on the outside of the lower surface of the flange portion, so that workability when gripping the tray can be improved.

[Brief description of the drawings]

FIG. 1 is a bottom view of a tray according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the tray of FIG.

FIG. 3 is an enlarged cross-sectional view showing a main part of the trays stacked along the line III-III in FIG. 1;

FIG. 4 is a plan view of the tray of FIG. 1;

FIGS. 5A to 5C are plan views each showing a modified example of the tray according to the present invention.

FIG. 6 is a side view showing a main part of the tray of FIG. 1;

FIG. 7 is a bottom view showing a conventional tray.

FIG. 8 is a plan view of the tray of FIG. 7;

FIG. 9 is an explanatory view showing a state where conventional trays are stacked.

FIG. 10 is an explanatory view showing a state where conventional trays are stacked.

[Explanation of symbols]

 Reference Signs List 12 tray 14 mounting part 15 rising part 16 corner part 17 flange part 17A lower surface of corner part of flange part 20 bulging part 30 sliding part W1 thickness of bulging part H1 height of bulging part W2 wall thickness of sliding part

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[Procedure amendment]

[Submission date] February 16, 2001 (2001.2.1)
6)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above problems, and can improve the workability at the time of stacking and improve the strength at the corners or around the corners to reduce the weight. It is intended to provide a tray that can be used. Another object of the present invention is to provide a tray capable of improving workability when grasping the tray.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

The tray 12 has a lower surface 17 of the flange 17.
Since A knob 50 on the outside is formed, for example,
Even if the tray 12 is wet or the worker is working with wet rubber gloves, it is easy to grasp the tray 12 with a finger.
This prevents work from slipping off your hands, thereby improving work efficiency.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0026

[Correction method] Change

[Correction contents]

[0026]

As described above, according to the present invention, there is provided a resin tray having a flat non-circular mounting portion and a rising portion which rises outwardly from the outer periphery of the mounting portion. In the upper portion of the rising portion, a flange portion extending outward is provided, and a bulging portion having a predetermined thickness and a predetermined height is formed in a corner portion of the outer periphery of the rising portion, and a lower surface of the corner portion of the flange portion is By forming a sliding portion having a predetermined thickness, which is continuous with the upper portion of the bulging portion and extends toward another corner, stacking can be easily performed, and workability at the time of stacking can be improved. together, it is possible to reduce the weight and improve the strength of the peripheral corner or corners.

Claims (8)

[Claims] 1. A resin tray having a flat non-circular mounting portion and a rising portion that rises inclining outward from the outer periphery of the mounting portion, wherein a flange extending outward is provided above the rising portion. A bulge portion having a predetermined thickness and a predetermined height is formed at a corner of the outer periphery of the rising portion, and a lower surface of the corner portion of the flange portion is connected to an upper portion of the bulge portion and another corner portion is formed. Characterized by forming a sliding portion having a predetermined thickness and extending toward the tray. 2. The tray according to claim 1, wherein a knob portion protruding downward is formed between the sliding portions outside the lower surface of the flange portion. 3. The knob portion is formed at a predetermined length substantially at the center between the corners of the flange portion, and the lower end portion is located at the same height or above the lower surface of the sliding portion. The tray according to claim 2. 4. The swelling portion is formed such that a part of the outer surface abuts on the inner surface of the corner of the rising portion of the lower tray when the trays are stacked, thereby creating a gap between the upper and lower trays that communicates with the outside. The tray according to claim 1, wherein: 5. The sliding portion is formed such that when the trays are stacked, the flat lower surface is placed on the upper surface of the flange portion of the lower tray, and a gap is formed between the upper and lower trays to communicate with the outside. The tray according to claim 1, wherein: 6. The tray according to claim 1, wherein the bulging portion extends a predetermined length from the corner of the rising portion to the left and right to prevent lateral displacement when the trays are stacked. 7. The tray according to claim 1, wherein the corner of the rising portion is curved and rises from the arc-shaped corner of the mounting portion and is formed in a curved surface. 8. A resin tray having a flat non-circular mounting portion and a rising portion that rises inclining outward from the outer periphery of the mounting portion, wherein a flange extending outward is provided above the rising portion. A tray provided with a knob portion protruding downward on the outside of the lower surface of the flange portion.