CN104918524A - Improved pallet - Google Patents

Abstract

The invention relates to an improved bearing tray, which comprises a substantially flat surface, a bearing plate and a supporting plate, wherein the substantially flat surface is provided with an upper surface and a lower surface; and a handle located within a cavity in the bottom of the lower surface, wherein the cavity is configured to receive and retain the handle such that the handle does not extend beyond the lower surface of the tray, and wherein the handle can be easily pulled into an open position to receive the palm of a user and provide better control when the tray is removed, and wherein the handle can be easily returned to the cavity and returned to a closed position when the user removes the palm of the user.

Description

Improved pallet

technical field

The present invention relates to the field of server utensils, in particular to an innovative tray device and handle system.

Background technique

The existing "tray" refers to a platform designed to carry items, such as glasses, plates, food, etc., and delivered from one place to another. A general pallet can be made of a variety of materials, including silver, copper, iron sheet, wood, melamine resin, plastic, various polymers or any combination of the above components. Some trays are equipped with bases, handles and/or short legs for support. Trays are usually flat but have raised edges to prevent items from sliding out of the tray. The trays can be constructed in any shape and form, but are usually round, oval or rectangular, sometimes with openings or access handles on opposite sides of the tray to facilitate handling of the tray.

Although service trays usually have two handles, especially those used in the home, they are not used by professional waiters, because professional waiters need to serve customers while taking trays, and do not move the trays. lay down. The serving trays used by standard waiters have no special holding area, so that the waiter/waitress must bear the overall weight of the tray with the horizontal palm or arm. In addition, for larger trays, one end of the tray is usually placed on the shoulder of the waiter, and the waiter holds the tray with his palm open and lifts the tray with his upper arm bent. The above-mentioned unnatural way of picking will cause fatigue and muscle injuries. And there is a great possibility of accidents. Generally, the user/waiter relies on one arm or palm to maintain the balance of the tray, while the other hand is used to avoid the tray from tilting and unstable when picking up the tray. This requires some skill as the tray may tilt when it is removed and the waiter needs to keep said tray horizontally stable.

To remove the serving tray, the user/waiter often must first lower the tray onto a nearby flat surface or temporary stand due to the inability to sustain the weight of the serving tray and/or keep the serving tray from becoming unbalanced superior. Unless the waiter/waitress is experienced enough to support the serving tray with one hand, it is not uncommon to be faced with a drink tipping over or glass shattering due to the tray tipping over. Even skilled waiters can experience uncertainty when lifting a full tray or setting it down. Therefore, using a safer tray and holding posture can prevent the waiter from tilting the tray and losing balance when standing on the tray or picking up items on the tray.

It is worth noting that there are currently various devices for tray handles. However, the design of various current tray handle devices is too cumbersome and/or impractical in use and/or manufacture. For example, US Patent Publication No. US2013/0057005 discloses a finger-supported tray, mainly using two fingers to secure (and stabilize) the tray. The above-mentioned tray form is most suitable for small-sized trays, and forces users to evenly distribute items on the tray to maintain the balance of the tray. However, due to only relying on two fingers to maintain the stability and support of the tray, it may not be possible to fully grasp the status of the tray, and the user will soon feel discomfort in the fingers. It is also worth noting that the finger support area is fixed, which may not be suitable for larger or bandaged fingers, and may force the user to remove the ring on the finger. Furthermore, many pallet holding mechanisms do not allow for switching the center of balance of the pallet, for stacking multiple pallets, and/or for placing the pallet on a flat surface, such as pallets with fixed handles and/or stands. Said trays have fixed handles which cannot be replaced if necessary. Other tray handle devices are inconvenient to use because the tray handle device requires the user to repeatedly attach and detach the handle from the tray. The above-mentioned device, such as WIPO Patent No. WO2010/15115 discloses a rigid carrying handle, which can be attached to the bottom of the tray. Moreover, most of the existing movable handle devices include movable parts with complex and fine structures, which are easily damaged and worn.

Based on the above, there is a need for a tray and/or handle system in the existing technical solutions to improve the user's ability to grasp the tray when delivering the service tray without sacrificing the original efficiency and function. The existing tray and/or handle system should be able to ease the user's burden and easily achieve the effect of balancing the tray when serving or carrying items around. It is therefore an object of the present invention to provide a novel form of tray and handle system which simply solves the above problems, overcoming many of the problems of the prior art.

The remaining objects and advantages of the present invention will be described later.

Contents of the invention

The main purpose of the present invention is to disclose an improved carrying tray.

Another object of the present invention is to disclose an improved carrying tray which can increase the stability of the tray when carrying items thereon.

Another object of the present invention is to disclose an improved carrier tray, which can maintain the stability of the tray during delivery even if the items on the tray are not evenly distributed on the tray.

The invention relates to an improved carrying tray, which is characterized in that it includes:

a substantially planar surface having an upper surface and a lower surface;

a cavity at the bottom of said lower surface; and

a handle, which is disposed in the cavity,

wherein the cavity is used to accommodate and retain the handle so that the handle does not extend beyond the lower surface of the tray,

the handle can be easily pulled out from the lower surface into an open position to accommodate a user's palm and provide better control when picking up the tray, and

When the palm is removed, the handle easily returns to the cavity and returns to a closed position.

According to some embodiments of the present invention, the tray further includes an indicator for indicating the position and orientation of the handle and for showing where the user should insert his palm to touch the handle in the correct direction, the indicator Set on the top or bottom of the tray. Additionally, the indicator protrudes from the surface of the tray and/or includes an illuminating agent.

According to some embodiments of the present invention, the lower surface has a ridge such that the handle does not extend from the ridge. The ridge forms the cavity to hold the handle, and the handle moves in the cavity from the closed position to the open position or from the open position to the closed position.

According to some embodiments of the present invention, the handle is permanently connected to the tray, or the handle is detachably connected to the tray.

If the handle is detachably connected to the tray, the handle is detachably connected to the tray by a protrusion and a corresponding groove, so that it can be easily replaced. position and/or orientation of the handle and avoid inadvertent changes. In certain embodiments, the handle is held in place by friction, whereby the position of the handle can be easily changed and inadvertent changes avoided. Alternatively, the handle may be detachably attached to a track that runs along the tray to provide an additional function of changing the position of the handle, in which case the handle is fixed to the track along the tray by friction. The track provided on the tray can easily change the position of the handle and avoid unintentional changes.

According to some embodiments of the present invention, the handle of the tray is made of one or more rigid materials, and the rigid materials include plastic materials, fiberglass, regenerated wood or plastic, metal or wood, or any combination thereof group. or,

According to some embodiments of the present invention, the handle of the tray is made of one or more non-rigid materials, and the non-rigid materials include soft plastic materials, silicone, leather, fiber, rubber, or any combination thereof group. As another option, the handle of the tray is made of any combination of rigid material and non-rigid material.

The present invention further relates to a handle system unit, characterized in that it basically comprises:

a coupling base, including an inner cavity at the bottom of the coupling base; and

a handle, placed in the inner cavity

wherein said handle system unit is attached to the bottom of a tray of any shape and size; and

The inner cavity is used to accommodate and retain the handle so that the handle does not extend beyond the lower surface of the tray;

the handle can be easily pulled out from the lower surface into an open position to accommodate a user's palm and provide better control when picking up the tray, and

When the palm is removed, the handle easily returns to the cavity and returns to a closed position.

According to some embodiments of the invention, the handle system unit is attached to a pallet by any of the following means: snap fit, glue, screw lock and weld. In various embodiments, the coupling base of the handle system unit is rotatable so that the position and orientation of the handle can be changed.

According to other embodiments of the present invention, the handle of the tray is integrally formed on the lower surface so as to be easily pulled away from the lower surface to an open position for accommodating a user's palm and Provides better control when handling the tray. In particular embodiments, said tray is a pizza tray, said handle is part of said lower surface, and easily disengages a user's palm from said handle. In other embodiments, the structural strength of the handle is reinforced by a reinforcing material, and the reinforcing material is selected from nylon thread or plastic. In another embodiment, said lower surface includes an additional insulating layer to protect said user's palms from thermal burns.

Description of drawings

The present invention can be better understood by referring to the detailed drawings and specific embodiments. The technical content and detailed description of the present invention are as follows with reference to the accompanying drawings:

Fig. 1 is a schematic diagram of a waiter taking a tray with a handle in an embodiment of the present invention;

Figure 2 is a tray of the present invention with the handle moving the handle along a cavity through a diameter of a coupling base of a handle system and turning the handle/tray across the coupling base without turning the wrist top view diagram of

FIG. 3 is a schematic diagram of a handle system attached to the bottom of any type of tray in an embodiment of the present invention, the handle is in a cavity, and different ridges protrude from the coupling base;

4 is a schematic diagram of the handle in the present invention in straight/closed (A and C) and bent/open (B) configurations;

Figure 5 is a schematic top view of the tray with the handle in one embodiment of the present invention when the handle is flattened/closed (A) and pulled/opened (B);

Fig. 6 is a schematic diagram showing that the handle bottom of the present invention accommodates the user's palm instead of only four fingers (index finger, middle finger, ring finger and little finger);

Figure 7 is the top of the handle of the present invention, the indicators are set on both sides of the tray and adjacent to the handle, and the position corresponding to the bottom of the indicator is marked with a dotted line (A), and (B) is an enlarged schematic diagram of the indicator area ;

Figure 8 is a schematic diagram of the advantages of the tray (B) of the present invention compared to the tray (A) of the prior art when the load of the items on the tray is unbalanced during the delivery process; and

Fig. 9 is a schematic diagram of the bottom and side views of the tray of the present invention as a pizza tray.

It is to be understood that certain features described in various embodiments are not considered essential features of those embodiments, unless the embodiment is inoperable without that component.

Detailed ways

It is known that by using the pallet according to the present invention or by attaching the handle system according to the present invention to the bottom of a standard pallet, it will be easier and more relaxed to carry and stabilize the pallet.

The present invention relates to a tray 10 and a handle system 14, made of rigid material, elastic material or non-elastic material, which may be but not limited to plastic material, fiberglass, regenerated wood or plastic, metal or wood, or any combination thereof Group. The handle system 14 is arranged on the bottom of any form of pallet by means of any appropriate adhesive technology such as fastening, pasting, threaded connection, welding, etc. during the manufacturing process of the pallet or after the pallet is completed. A tray for delivering drinks and/or food. The handle system unit is attached to the bottom of the tray, preferably adjacent the center of the tray. The handle 16 of the present invention may be any suitable handle, such as a strap, grip or lever, and may be constructed of a rigid, semi-rigid, or soft material. The handle 16 may be constructed of any suitable material, which may be, but is not limited to, plastic material, fiberglass or metal, or any combination thereof. A particularly preferred material is a plastic material because of its durability, light weight, simple and inexpensive manufacture. Examples of suitable plastic materials include, but are not limited to, silicon, polypropylene, polycarbonate, polyethylene or nylon.

The tray 10 and handle system 14 of the present invention can be manufactured by known techniques including but not limited to injection molding, power forging, die forging, sheet forming or blow molding. The tray and the handle system may be fabricated/prepared as one piece. Alternatively, the handle system may be prepared as a separate unit and adhered to the tray during manufacturing or to the tray or any device afterwards. The handle system of the present invention can be manufactured in one piece, or can be constructed by assembling multiple parts.

The tray 10 of the present invention includes a support handle 16 disposed in a cavity (such as an area surrounded by a groove, a track, a channel, a notch or a raised ridge) on the lower surface of the tray. When not in use, the handle is flat and does not extend from the cavity 26 (as shown in FIG. 5A ), so that the tray remains horizontal and stable when placed on a flat surface such as a counter, and multiple trays can be stacked on top of each other. The handle 16 does not extend beyond the cavity 26, but an extension of up to 5 mm is acceptable, but substantially no extension beyond the cavity. When the user wants to lift the tray, the user can easily slide the handle extending from the cavity 26/channel (as shown in Figure 5B) and insert the user's palm (palm up) between the handle and the tray, Make the handle tightly fit the user's palm and secure the tray from tipping or falling. When the user removes the palm, the handle slides easily back to a closed position either automatically or with slight pressure thereon.

As used herein, the term "palm" (number 15 in the drawings) refers to the central area of the front of the hand, the metacarpal bones located on the surface of the palm. Basically, "palm" refers to the front area of the hand between the base of the 4 fingers (index, middle, ring, and pinky) and the wrist.

It will be appreciated that any reference to a cavity 26 refers to any structure that fits appropriately within the handle 16 while allowing it to move or slide from a closed position to an open position, and vice versa. Examples of suitable cavity 26 include channels, grooves, notches, tracks, rails, flanges and depressions, etc., or any combination thereof. The cavity can be produced during the preparation of the tray 10 or processed after the preparation. The cavity can also be formed by adding or machining a raised ridge, which is used to constrain and position the handle 16 .

The ridge is provided on the lower surface of the tray or the handle system, and its function is to limit the handle and further enhance the structural strength of the tray of the present invention through additional structural support.

It can be understood that any reference to a handle extending from a cavity, a base or a tray means that the handle is not extensible or limited and extends from the cavity, base or tray, The maximum distance that the handle can extend or extend from the cavity, base or tray is no more than 0.5 cm.

The handle system 14 of the present invention includes a support handle 16 /band, which is disposed in a cavity, groove, track, channel or a gap of a base 18 . When not in use, the belt body is flat and does not extend outward from the cavity (or is in a state of substantially extending outward). When the user wants to lift the tray, the user can easily slide the belt extending from the cavity 26/channel and insert the user's palm (palm up) between the belt and the tray, so that The strap tightly binds the palm of the user and fixes the tray to prevent it from tilting or falling. When the user removes the palm, the strap easily slides back to a closed position.

In the present invention, the tray 10 further includes an anti-slip mat or anti-slip surface, which is arranged on the upper surface of the tray, so as to prevent the items placed on the tray from sliding. The non-slip surface can be formed integrally with the pallet during the pallet manufacturing process, or it can be added after the pallet is completed.

In the present invention, the tray 10 further includes an index 17 for indicating the position of the handle 16 . The indicator 17 can be provided as part of the pallet, or can be added to the pallet after the pallet is finished. The indicator 17 may be placed on the periphery of the tray to indicate to the user where to insert his palm to place the palm in the handle, or the indicator 17 may be placed on the tray if graphically. Center of the tray, directly above the handle, thus marking the position and orientation of the handle below the tray. The indicator 17 can also be arranged on the lower surface of the tray in the form of a rigid surface or a bump, so that the user can feel that it is in the correct direction by touching it. In other embodiments, the indicator 17 can be realized by lighting, so that the position of the handle can also be pointed out conveniently in the dark. The indicator 17 is very helpful for professional waiters who often need to deliver trays to serve customers, and therefore must allow the waiter to immediately/effectively identify the position of the handle to avoid unnecessary waste of time.

The area around the bottom handle 16 of the tray 10 or the handle system 14 includes a roughened or textured surface, such as a non-slip layer, to provide additional grip. Optionally, said area is provided with finger grooves. The cavity 26 and the handle 16 can be selectively rotated so that the tray 10 can be easily turned without twisting the arm or wrist. Optionally, a layer of cushioning material is provided on the inside of the handle 16 to increase comfort.

In use, the tray 10, or the handle system 14 attached to a tray, provides the person handling the tray with a high degree of control over the tray, virtually eliminating any accidental force. In this way, the person handling the tray can more easily and safely deliver the articles, such as food or drink, to their intended purpose and almost avoid the risk of overturning the tray and the articles.

Normally, when a waiter/waitress takes items and places them on a tray, the tray will be placed on the counter, and the tray will be removed from the counter by one hand and handed over to the other hand in a sliding manner, while the second hand Hold the tray steady with one hand. This prevents the waiter from seeing only the bottom of the tray and being forced to use one hand to balance and handle the tray. Therefore, in this embodiment of the invention, the handle 16 of the handle system 14 or the handle of the tray 10 can be easily pulled out of the cavity 26, ie operated with one hand.

As used herein, the term "closed position" of the tray 10 or handle system 14 refers to a position where the handle is in contact with or proximate to the lower surface 12 of the tray 10 or a base 18 of the handle system 14 . Accordingly, the term "open position" of the tray 10 or handle system 14 as used herein refers to a position where the handle is not in contact with or proximate to the lower surface 12 of the tray 10 or the base 18 .

When the person taking the tray inserts his palm under the handle 16 (that is, brings the handle to an open position), there will be a close contact between the user's palm and the bottom of the tray and between the back of the user's hand and the inner surface of the handle. This type of tight support is not seen in the current existing pallets. This provides the user with greater control over the tray 10 and its contents by easily increasing the reactivity and increasing the counteracting force that prevents the tray from tipping over. It is worth noting that the handle covers and tightly covers the back of the user's hand from one side to the other, not just covers part of the back of the hand or part of the fingers (like the tray in the prior art), and is suitable for various palm sizes. Due to the simple design, the tray 10 and the handle system 14 of the present invention are suitable for both right-handed and left-handed people, even when the non-dominant hand is used to carry the tray, it can still show the advantage of controlling the tray.

Unless otherwise defined herein or defined below in the remainder of this specification, all meaningful technical and scientific terms used herein are those that are commonly understood by one of ordinary skill in the art to which this invention belongs.

Before the present invention is described in further detail, it is to be understood that this invention is not limited to particular trays, shapes, handles, materials or manufacturing techniques, as such may, of course, vary. It should also be understood that the terminology used herein is used only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

The present invention can be further understood through the description of some specific embodiments below, and the following examples are only illustrative, not intended to limit the present invention.

FIG. 1 is a schematic diagram of a waiter taking a tray with a handle in an embodiment of the present invention. The tray 10 includes a surface plate 12 and a handle 16 disposed under the surface plate 12 . The handle 16 is arched in this embodiment, for the waiter to place the tray 10 on his open palm 15 , while the handle 16 covers the palm 15 of the waiter. The grip provided by the handle allows the tray to be accessed with one hand and provides additional safety and control to prevent items from slipping out of the tray.

Fig. 2 is a schematic top view of a tray according to an embodiment of the present invention. In this embodiment, the tray is rectangular. Actually, the tray can be of any size and shape, such as circular, oval, square, etc. According to an exemplary embodiment of the invention, the position and orientation of the handle 16 can be changed: it can be arranged in a moving track/cavity 26 of a rotatable base 18 , movable in the direction of the arrow 28 . Thus, the rotational movement of the base 18 , and the linear movement of the handle 16 along the track 26 allow the handle 16 to be configured in any desired position and orientation on the surface plate 12 . This allows the user to switch the pallet's center of balance (also known as the center of gravity and pivot point) for a more comfortable and stable carrying position.

According to different embodiments of the present invention, the track 26 further includes holes arranged along the track 26 . The handle may comprise two perforated "flanks" to which the handle 16 is secured by bolts and which attach the handle 16 to holes in the rail 26 to secure the handle 16 to the base 18 . Preferably, the movement of the handle 16 along the track 26 is characterized by severe frictional forces generated by the user exerting force on the handle 16 to move the handle 16 . The friction force allows the handle 16 to move easily along the track 26 while preventing unintentional displacement of the handle 16 . Furthermore, the rotation of the base 18 can also be characterized by severe friction, which provides the same benefits. Thus, the frictional force allows easy movement of the handle 16 while preventing inadvertent displacement of the handle 16 . According to another embodiment of the invention, said handle 16 comprises a protrusion and its connected components, and has a plurality of corresponding grooves. Therefore, on the one hand, such a mechanism can easily change the position and/or orientation of the handle 16 according to the position of the surface plate 12, and on the other hand, it can avoid unintentionally changing the position and/or orientation of the handle. .

According to other embodiments of the present invention, the handle 16 is fixed and does not have the ability to move. In other words, the mechanism by which the handle 16 moves is optional, and the handle 16 can either be "permanently" attached to the surface panel 12 or the base 18 at the same position, ie not move along the track 26, and/or may not rotate.

FIG. 3 is a schematic diagram of the detailed structure of the handle system 14 of the present invention. The handle system can be manufactured as a single and self-contained unit and attached by any means possible to the bottom of any suitable tray or other object. As shown, the handle 16 is disposed within the cavity 26 in the unit, and the unit is provided with ridges to enclose and create space for the handle 16 so that the handle does not extends beyond the lower surface of the unit. In this figure, the handle 16 does not have the ability to move along the diameter of the tray. However, it is possible for the user to move the center of balance by pulling the handle from the right or left, so that the arch assumed by the handle 16 will not appear in the center of said handle system 14 .

FIG. 4 is two schematic views of the present invention, but not intended to limit the present invention, it is a schematic view of the handle 16 on the tray 10 or in the handle system 14 of the present invention. The handle 16 is resilient and may be constructed of any suitable material, such as rubber, silicon, or any suitable polymer. It can also be made of metal, optionally coated with a layer of polymer, fabric or leather. The handle can also have a cushioning layer. In one embodiment, the handle 16 has no moving parts, thereby avoiding wear and tear on the handle due to abrasion or friction that occurs with moving parts. However, according to another embodiment, said handle 16 has no moving parts, so that it can be easily replaced when required, avoiding the occurrence of wear or friction with moving parts.

Fig. 5 is a tray 10 of the present invention whose handle 16 is located in a "closed space" (A) so that the tray can be placed on the counter or a plurality of trays can be stacked on each other; or its handle 16 is located in an "open space" (B) for A schematic diagram of a user inserting his/her palm between the tray 10 and the handle to carry the tray. The tray may have a ridge 29 to create space for the handle so that it does not extend from the lower surface of the tray. FIG. 6 is a schematic view of the handle 16 at the bottom of the tray 10 according to the present invention to accommodate the user's palm. According to an embodiment of the invention presented in the two drawings, an indicator 17, such as a plurality of ridges on the bottom of the tray, allows the user to perceive without sight that the palm of the hand can be easily positioned in the correct direction. Find the handle 16.

Fig. 7 is a schematic diagram of the upper surface of the tray of the present invention, as shown in the figure, another indicator 17 of the present invention is a white luminous stripe. Said indicator 17 may be of any shape, form and colour, and may be illuminated to be visible in dark conditions.

FIG. 8A is a schematic diagram of an existing pallet that remains stable when items are evenly distributed on the pallet. However, when the stable tray is disturbed, eg by removing an object on the tray 31, the tray will tilt and the rest of the items still on the tray will fall. However, in the tray 10 of the present invention (as shown in FIG. 8B ), the handle 16 covers the palm of the waiter, which enhances the control of the tray and prevents the items in the tray from falling due to tilting of the tray. Since the tray 10 of the present invention is supported on the entire palm 15 area, and selectively supported by the user's wrist or other hand areas, compared with the prior art that only provides support for a small area of the tray, the tray of the present invention improves The supporting capacity of the pallet.

FIG. 9 shows a pizza box as the tray 10 of the present invention, wherein the handle 16 is integrally formed on the lower surface of the tray. As shown in Figure 9A, it is the bottom of the pizza box. When the pizza box is stored or not in use, the handle 16 is located in the "closed space" and does not extend outward. As shown in FIG. 9B , it is a schematic side view of a pizza box, wherein the handle can be pulled out for use. 9C is also a schematic view of the bottom of the pizza box. When the handle 16 is located in the "open space", it will cover the palm of the user.

According to another embodiment of the present invention, an egg carton may include the handle 16 of the present invention mounted below the carton. The handle 16 may be constructed of a non-rigid material so that the cartons may be stacked upon each other. In another embodiment of the invention, a pizza box may serve as a tray. That is, the pizza box can include a handle 16 mounted below the pizza box.

The above description and the description of the embodiments of the present invention have clarified the object of the present invention. It is only illustrative of the present invention and is not intended to limit the present invention to the above description and drawings in any way and form.

DEFINITIONS Any terms used above and in the claims shall be construed in accordance with their definitions. Reference numerals in claims are not part of the claims, but are used to facilitate reading. The above reference signs should not be construed as limiting the claims in any way.

As used in this specification and claims, the singular forms "a", "an" and "the" include plural referents unless the content clearly dictates otherwise. Thus, for example, reference to "a component" may include a combination of two or more components; reference to "a liquid" may include mixtures of liquids, and the like.

As used herein, the terms "substantially" or "substantially" refer to a parameter that represents complete or incomplete only a minimal portion (e.g., 99.9%, 99%, 98%, 95% or 90% complete ).

In summary, although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention, and those skilled in the art will be able to change the details of different implementations of the present invention without affecting its Other embodiments of the basic spirit of the present invention. Therefore, the present invention is not limited by the embodiments shown in the drawings and described in the description, and the protection scope of the present invention is defined by the claims.

Claims (24)

1. An improved carrier tray, characterized in that it comprises: a substantially planar surface having an upper surface and a lower surface; a cavity at the bottom of said lower surface; and a handle, which is placed within the cavity, wherein the cavity is used to accommodate and retain the handle so that the handle does not extend beyond the lower surface of the tray, the handle can be easily pulled out from the lower surface into an open position to accommodate a user's palm and provide better control when picking up the tray, and When the palm is removed, the handle easily returns to the cavity and returns to a closed position. 2. The tray according to claim 1, further comprising an indicator for indicating the position and orientation of the handle, or for indicating where the user should place his palm to contact the handle in the correct direction. handle. 3. The tray according to claim 2, wherein the index is arranged on the top or the bottom of the tray. 4. The tray according to claim 3, wherein the indicator protrudes from the surface of the tray and/or includes an illuminating agent. 5. The tray of claim 1, wherein the lower surface has a ridge such that the handle does not extend from the ridge. 6. The tray of claim 5, wherein the ridge forms the cavity to hold the handle, and the handle moves from the closed position to the handle within the cavity. open position or move from said open position to said closed position. 7. The tray of claim 1, wherein the handle is permanently attached to the tray. 8. The tray according to claim 1, wherein the handle is detachably connected to the tray. 9. The tray according to claim 8, characterized in that, the handle is detachably connected to the tray by a protrusion and a corresponding groove, so that it can be easily replaced position and/or orientation of the handle and avoid inadvertent changes. 10. The tray of claim 9, wherein the handle is held in place by friction, whereby the position of the handle can be easily changed and unintentional changes are avoided. 11. The tray according to claim 8, wherein the handle is detachably connected to a track, and the track is arranged along the tray, thereby providing an additional function of changing the position of the handle. 12. The tray according to claim 11, wherein the handle is fixed to the rail provided along the tray by friction, so that the position of the handle can be easily changed without unintentional between changes. 13. A tray according to any one of the preceding claims, wherein the handle is formed from one or more rigid materials. 14. The pallet of claim 13, wherein the rigid material comprises a group consisting of plastic material, fiberglass, recycled wood or plastic, metal or wood, or any combination thereof. 15. The tray according to any one of claims 1-12, wherein the handle is made of non-rigid material. 16. The pallet according to claim 15, wherein the non-rigid material comprises soft plastic material, silicone, leather, fiber, rubber, or a group consisting of any combination thereof. 17. The pallet according to any one of claims 1-12, characterized in that, the handle is made of any combination of rigid material and non-rigid material. 18. A handle system unit, characterized in that it basically comprises: a coupling base, including an inner cavity formed at the bottom of the coupling base; and a handle, placed in the inner cavity, wherein said handle system unit is attached to the bottom of a tray of any shape and size, and The inner cavity is used to accommodate and retain the handle so that the handle does not extend beyond the lower surface of the tray, the handle can be easily pulled out from the lower surface into an open position to accommodate a user's palm and provide better control when picking up the tray, and When the palm is removed, the handle easily returns to the cavity and returns to a closed position. 19. The handle system unit of claim 18, wherein the handle system unit is attached to a pallet by any of the following means: snap fit, glue, screw lock and weld. 20. The handle system unit of claim 18, wherein the coupling base of the handle system unit is rotatable so that the position and orientation of the handle can be changed. 21. The tray of claim 1, wherein the handle is integrally formed on the lower surface so as to be easily pulled away from the lower surface to an open position for accommodating a The user's palm provides better control when handling the tray. 22. The tray of claim 21, wherein said tray is a pizza tray, said handle being part of said lower surface and capable of easily disengaging a user's palm from said handle. 23. The tray according to claim 22, wherein the handle is strengthened by a reinforcement material, and the reinforcement material is selected from nylon thread or plastic. 24. Handle system unit according to claim 22, characterized in that said lower surface comprises an additional insulating layer to protect said user's palm from thermal burns.