JP2020082857A - Dolly - Google Patents

Abstract

To provide a dolly which can be carried preferably.SOLUTION: A dolly 1 includes: a block 2 on which articles may be placed; and multiple casters 3 attached to the lower surface side of the block 2. The block 2 includes a body part 4 including a placement surface 5 in which articles may be placed at the upper surface side and includes a holding part 31 including: a handle hole 32 provided at the body part 4; a wall part 33 extending downward from an opening edge of the handle hole 32; and a protruding part 34 extending from a lower edge part of the wall part 33 to the outer side of the handle hole 32. Chamfered parts 35 are provided at a border part between a peripheral edge part of the handle hole 32 of the body part 4 and the wall part 33 and a border part between the wall part 33 and the protruding part 34.SELECTED DRAWING: Figure 1

Description

The present invention relates to a trolley used for transporting articles and the like.

Generally, a trolley used for transporting an article or the like includes a pedestal on which an article is placed and which is substantially rectangular in plan view, and casters provided near four corners on the lower surface side of the pedestal. In addition, there is one in which a handle hole is provided on the platform so that an operator can hold his/her hand when lifting the truck (see, for example, Patent Document 1).

Japanese Patent No. 2843295

By the way, when a worker carries a trolley with his/her hand in the handle hole, the operator's hand is placed against the opening edge of the handle hole or the lower end of the rib extending downward from the opening edge of the handle hole. Will be pressed together. For this reason, there is a concern that depending on the worker, the burden caused by such pressure contact is heavy and it becomes difficult to carry the carriage stably.

The present invention has been made to solve the above-mentioned problems and the like, and an object of the present invention is to provide a carriage that is suitable for carrying.

Hereinafter, each means suitable for solving the above-mentioned object will be described by itemizing. It should be noted that operational effects and the like peculiar to the corresponding means are additionally described as needed.

Means 1. A base on which articles can be placed,
In a trolley provided with a plurality of casters attached to the lower surface side of the pedestal,
The base is
In addition to having a main body part having a mounting surface on which an article can be mounted,
A handle hole provided in the main body portion; a wall portion extending downward from an opening edge of the handle hole; and a protrusion extending from the lower edge portion of the wall portion to the outside of the handle hole. Equipped with a gripping part
A chamfered shape portion is provided at a boundary portion between the peripheral portion of the handle hole of the main body portion and the wall portion, and a boundary portion between the wall portion and the protruding portion. Dolly.

According to the means 1, the operator can insert the hand (fingertip) into the holding hole, grasp the grip portion, and carry the cart. In particular, by providing the wall portion and the protruding portion in the grip portion, it is possible to increase the area of the grip portion that comes into contact with the hand of the worker when the worker puts his/her hand on the grip portion. Therefore, for example, as compared with the case where the grip portion is provided with the handle hole only in the main body portion, it is possible to suppress the local burden on the operator's hand (such as cutting into the hand of the grip portion). It is possible to make it easier to put a hand on the grip portion (make it easier to apply force). Further, since the corner portions of the grip portion are also chamfered, it is possible to easily hold the grip portion while suppressing a local burden on the operator's hand. As a result, it is possible to suitably carry the cart by holding the grip portion.

In addition, when the operator raises the trolley with his hand on the grip, the trolley tilts so that the balance is maintained while being supported by the operator's hand, and the grip is held inside the operator's hand. May be displaced relative to each other. At this time, as described above, since the grip portion has a relatively large area in contact with the operator's hand and is configured to have no corners, the adverse effect on the operator's hand is more reliably prevented. can do.

Means 2. The trolley according to means 1, wherein the wall portion and the protruding portion are continuously provided in an annular shape along an opening edge of the handle hole.

According to the means 2, no matter which part of the annular gripping portion is held, it is possible to suppress the local burden on the operator's hand and to easily hold the gripping portion. Therefore, regardless of the relative position between the base and the worker, it is possible for the worker to easily perform the work of holding the grip portion and lifting the trolley, thereby improving convenience.

It should be noted that "the handle hole has a circular shape in plan view, and the wall portion and the protrusion are continuously provided in an annular shape along the opening edge of the handle hole". Good. In this case, since the annular gripping portion has the same cross-sectional shape in any part, the truck can be lifted with a similar grip feeling.

Means 3. The trolley|bogie of the means 1 or 2 provided with the connection rib which connects between the said wall part, the said protrusion part, and the said main-body part.

According to the means 3, the strength of the grip portion can be increased and deformation, damage and the like can be suppressed. Therefore, while improving the durability of the grip portion, it is possible to avoid a situation in which the grip portion is deformed and becomes difficult to hold when a hand is put on the grip portion.

Means 4. A side rib extending along a side portion of the body portion, and a reinforcing rib provided on the inner side of the body portion with respect to the side rib and connected to the side rib,
At least one of the connecting ribs is connected to the reinforcing ribs.

According to the means 4, by connecting the connecting rib and the reinforcing rib, it is possible to mutually enhance the strength and the rigidity of the grip portion and the reinforcing rib. Therefore, while effectively increasing the durability of the base, it is possible to avoid a situation in which the peripheral portion of the gripping portion is deformed and becomes difficult to hold when the gripping portion is put on a hand.

Means 5. A plurality of the connecting ribs are provided, and are provided at least at a point-symmetrical position around the center of the handle hole or at a line-symmetrical position about an imaginary straight line passing through the center of the handle hole. The trolley|bogie of the means 3 or 4 characterized by the above.

According to the means 5, the grip portion can be effectively reinforced. In particular, it is possible to prevent a situation in which a strong portion and a low portion of the grip portion are remarkably generated, and prevent a situation in which the grip is held in a good or bad manner. can do. Therefore, it is possible to improve the workability when carrying the cart by holding the grip portion. Further, the reinforcing ribs connected to the connecting ribs such as the above-mentioned means 4 are also provided at the point symmetrical position or the line symmetrical position, whereby the base can be effectively reinforced.

Means 6. Of the ribs extending downward from the main body portion, the lower edge portions of the peripheral ribs provided around the grip portion have substantially the same height as the lower surface of the projecting portion, and are located closer to the main body portion than the peripheral ribs. 6. The trolley according to any one of means 1 to 5, wherein the rib on the side of the side portion extends below the lower surface of the protruding portion.

According to the means 6, since the lower edge portion of the peripheral rib has substantially the same height as the lower surface of the projecting portion, the peripheral rib interferes with the fingers of the hand hung on the grip portion, making it difficult to hold the grip portion. Such a situation can be avoided. On the other hand, the ribs on the side of the main body that are closer to the peripheral ribs extend below the peripheral ribs, thus further reinforcing the base.

It should be noted that the peripheral ribs are assumed to be ribs within the reach of the hand held by the grips, and include those not directly connected to the grips (the connecting ribs of the means 3). In addition, for example, when stacking is possible such that the pedestals are brought into contact with each other in the vertical direction by rotating the dolly 90 degrees (so-called cross-stacking), the gripping portion has a lower edge portion of the rib. Since it is located higher than the above, it is easy to raise the hand of the grips of the cross-stacked trolleys and the grips of the upper trolleys come into contact with and damage the trolley bases of the lower trolleys. The situation can be avoided.

It is a perspective view which shows a trolley|bogie. It is the perspective view which looked at the platform from the lower surface side. It is a partial expansion perspective view which looked at the grasping part peripheral part of a pedestal from the lower surface side. FIG. 4 is a partially enlarged perspective view including a horizontal cross section of the base shown in FIG. 3. It is a partially expanded perspective view including the vertical cross section of a base. It is a perspective view which shows the trolley|bogie with which the handle was attached. It is a perspective view which shows the trolley|bogie with which the handle was tilted. It is a perspective view which shows the holding part of another embodiment. It is a partially expanded perspective view which shows the lower surface side of the holding part of the base of another embodiment. It is a partially expanded perspective view including the vertical cross section of the base of another embodiment.

An embodiment will be described below with reference to the drawings. As shown in FIG. 1, the carriage 1 includes a base 2 on which articles can be placed, and casters 3 attached to the four corners on the lower surface side of the base 2. As shown in FIGS. 1 and 2, the base plate 2 has a substantially rectangular plate shape, and a main body portion 4 whose upper surface side is configured as a placing surface 5 on which an article can be placed is opposed to the main body portion 4. Long-side side ribs 6 extending downward from the pair of long-side sides, short-side side ribs 7 extending downward from the pair of short-side sides facing each other of the main body 4, and a pair of long-sides The side ribs 6 and the reinforcing ribs 8 provided in a lattice shape on the inner peripheral side of the pair of short side ribs 7 are provided. The reinforcing ribs 8 extend along the longitudinal width direction of the base 2 (parallel to the long side ribs 6) and the reinforcing ribs 8 along the lateral width direction of the base 2 (short side sides). The ribs 7 extend in parallel with the ribs 7 and are connected to the short side ribs 7 or the long side ribs 6, respectively. Further, the base 2 of this embodiment is integrally formed of polypropylene.

As shown in FIG. 2, the base 2 includes a caster mounting portion 9 to which the casters 3 are mounted. Each caster mounting portion 9 is composed of four bosses extending vertically, and each boss is connected to the reinforcing rib 8 in a cross shape in a manner that it is arranged at the intersection of the reinforcing ribs 8. The lower surface of the boss is flush with the lower edge of the reinforcing rib 8.

On the other hand, as shown in FIG. 1, the caster 3 includes wheels 11 and support fittings 12 that support the wheels 11. The support metal fitting 12 is brought into contact with the lower surface side of the caster mounting portion 9 and is fixed by screws with a substantially flat plate-like seat plate (not shown), and a substantially U-shaped cross section attached to the lower surface side of the seat plate. The support legs 14 and the shaft 15 attached to the support legs 14 and supporting the wheels 11 are provided. The caster 3 may be either a free caster in which the support legs 14 are rotatably connected to the seat plate or a fixed caster in which the support legs 14 are not relatively displaceable. You may use it.

Further, the trolley 1 is configured such that a handle 17 as shown in FIG. 6 can be optionally attached so as to correspond to one short side portion of the main body portion 4. The handle 17 connects a pair of left and right vertical frames 18, an upper frame 19 that connects upper end portions of the pair of vertical frames 18, and a middle portion of the pair of vertical frames 18, and a plate on which predetermined information is written. A plate holding portion 21 that holds 20 and a handle connecting portion 22 that is connected to the lower end portion of each vertical frame 18 are provided.

On the other hand, as shown in FIGS. 1 and 2, the base 2 includes a handle mounting portion 24 which is brought into contact with the lower surface side of each handle connecting portion 22 of the handle 17 and fixed by a screw. .. Each handle attachment portion 24 is configured by two bosses that extend vertically on the lower surface side of the main body portion 4 and open on the upper surface side of the base 2, and each boss is connected to the reinforcing rib 8 in a cross shape. In addition, as shown in FIG. 7, the handle 17 is configured to be foldable by tilting it to the upper surface side of the base 2. In addition, in the present embodiment, among the four casters 3 (the caster mounting portions 9), the two casters 3 located on the handle mounting portion 24 side are more likely to be located in the longitudinal width direction of the base 2 than the remaining two casters 3. The handle mounting portion 24 is provided between the caster 3 (caster mounting portion 9) and the corner portion of the base 2, which is located on the central portion side.

Now, as shown in FIGS. 1 and 5, the base 2 has a handle hole 32 provided so as to vertically penetrate the main body portion 4, and a wall extending downward from an opening edge of the handle hole 32. The grip portion 31 includes a portion 33 and a protrusion 34 that extends from the lower edge of the wall portion 33 to the outside of the handle hole 32. The operator can carry the trolley 1 by inserting a hand (fingertip) into the handle hole 32, grasping the grip portion 31. In addition, as shown in FIGS. 1 and 2, the handle hole 32 has a circular shape in plan view, and the handle 17 can be attached to the central portion of the main body portion 4 (the handle attaching portion 24 is provided). It is provided at a position displaced toward the short side. Further, the wall portion 33 and the protruding portion 34 are continuously provided in an annular shape along the opening edge of the handle hole 32.

Further, as shown in FIG. 5, a chamfered shape portion 35 is formed at the boundary between the peripheral edge of the handle hole 32 of the main body portion 4 and the wall portion 33, and at the boundary portion between the wall portion 33 and the protruding portion 34. Is provided. Although the chamfered shape portion 35 has the R chamfered shape in the present embodiment, it may have the C chamfered shape. Further, the R chamfered shape of the chamfered shape portion 35 is preferably, for example, R0.5 to R10, and more preferably, R3 to R7, for example. However, the chamfered shape portion 35 can be appropriately changed according to the size and position of the base 2 and the handle hole 32, and may have a shape exceeding R10, for example.

Further, as shown in FIGS. 3 and 4, the grip portion 31 includes a connecting rib 36 that connects the wall portion 33, the protruding portion 34, and the main body portion 4. The connecting rib 36 of the present embodiment passes through the central portion of the handle hole 32, on an imaginary straight line that extends parallel to the longitudinal width direction of the base 2, and also passes through the central portion of the handle hole 32 and passes through the center of the base 2. On a virtual straight line extending parallel to the lateral width direction, a pair of first connecting ribs 37, which are provided to sandwich the handle hole 32, and a first connecting member adjacent to each other in the circumferential direction of the grip 31 (wall 33). A second connecting rib 38, which is provided at an intermediate point of the rib 37 and extends parallel to the longitudinal width direction of the base 2, is provided. That is, the connecting ribs 36 of the present embodiment are provided at point symmetric positions centered on the center of the handle hole 32 and line symmetrical positions centered on an imaginary straight line passing through the center of the handle hole 32. There is.

In addition, each first connecting rib 37 is connected to the reinforcing rib 8 extending on the extension line of the first connecting rib 37 to the outside of the grip 31. As a result, each first connecting rib 37 is shaped such that the first connecting rib 37 is extended and connected to the long side side ribs 6 or the short side side ribs 7. The outer peripheral surface side of the grip portion 31 and the connecting ribs 36 are formed using a mold (two in this example) that can slide along the longitudinal width direction of the base 2.

Further, as shown in FIGS. 2 and 3, the lower end portion of the grip portion 31 (the lower surface of the protruding portion 34) is lower than the lower edge portions of the long-side side ribs 6 and the short-side side ribs 7. It is located above. Further, the lower edges of the reinforcing ribs 8 are basically configured to have the same height (flush) as the lower edges of the long side ribs 6 and the short side ribs 7. .. However, regarding the portion of the reinforcing rib 8 that is provided around the grip portion 31 (hereinafter, referred to as “peripheral rib 39”), the lower edge portion has substantially the same height as the lower surface of the protruding portion 34 (approximately). Flush). In addition, basically, the design is such that the hand of the operator hung on the grip 31 does not come into contact with the reinforcing ribs 8 other than the peripheral ribs 39. Further, as shown in FIG. 7, when the handle 17 is mounted on the trolley 1 and the handle 17 is tilted, the handle 17 does not hide the grip portion 31 (the handle 17 and the handle hole in the vertical direction). 32 does not overlap).

As described above in detail, according to the present embodiment, the carriage 1 can be carried by gripping the grip 31. In particular, by providing the wall portion 33 and the protruding portion 34 in the grip portion 31, it is possible to increase the area of the grip portion 31 that comes into contact with the operator's hand when the worker puts his/her hand on the grip portion 31. it can. Therefore, for example, compared with the case where the grip portion is provided with the handle hole only in the main body portion, it is possible to suppress the local burden on the operator's hand (eg, the grip portion 31 biting into the hand). It is possible to make it easier to put a hand on the grip 31 (make it easier to apply force). Further, since the chamfered shape portion 35 is formed even at the corners of the grip portion 31, the grip portion 31 can be easily held while suppressing the local burden on the hand of the operator. As a result, the trolley|bogie 1 can be suitably carried by putting a hand on the holding part 31.

Further, when the worker holds the grip 31 and lifts the trolley 1, the trolley 1 tilts so that the balance is maintained while being supported by the hand of the worker, and the inside of the hand of the worker Therefore, the grip 31 may be relatively displaced. At this time, as described above, the grip portion 31 has a relatively large area in contact with the operator's hand and is configured to have no corners, so that the adverse effect on the operator's hand can be more reliably achieved. Can be prevented.

Further, the handle hole 32 has a circular shape in a plan view, and the wall portion 33 and the protruding portion 34 are continuously provided in an annular shape along the opening edge of the handle hole 32. For this reason, since the annular grip portion 31 has the same cross-sectional shape in any portion, even if any portion of the annular grip portion 31 is held, local burden on the operator's hand is suppressed. You can lift the dolly with the same grip feeling. Therefore, regardless of the relative position between the base 2 and the worker, the worker can easily perform the work of lifting the trolley 1 by holding the grip portion 31, thereby improving convenience. You can

Further, since the connecting rib 36 that connects the wall portion 33, the protruding portion 34, and the main body portion 4 is provided, the strength of the grip portion 31 can be increased and deformation and damage can be suppressed. You can Therefore, while improving the durability of the grip portion 31, it is possible to avoid a situation in which the grip portion 31 is deformed and becomes difficult to hold when a hand is put on the grip portion 31. Further, each first connecting rib 37 is connected to the reinforcing rib 8 connected to the side ribs 6 and 7. Therefore, the strength and rigidity of the grip portion 31 and the reinforcing rib 8 can be mutually enhanced. Therefore, while effectively increasing the durability of the base 2, it is possible to avoid a situation in which the peripheral portion of the grip portion 31 is deformed and becomes difficult to hold when the grip portion 31 is touched. In addition, the connecting ribs 36 are provided at point symmetrical positions about the center of the handle hole 32 and line symmetrical positions about an imaginary straight line passing through the center of the handle hole 32. Therefore, the grip portion 31 can be effectively reinforced. In particular, it is possible to prevent a situation in which a strong portion and a low strength portion of the grip portion 31 are significantly generated, and a situation in which the gripping portion 31 is held in a good or bad manner. Can be prevented. Therefore, it is possible to improve the workability when carrying the cart 1 by holding the grip 31. Further, the reinforcing ribs 8 connected to the first connecting ribs 37 as described above are also provided at the point symmetric position and the line symmetric position, so that the base 2 can be effectively reinforced.

Further, of the reinforcing ribs 8, the lower edges of the peripheral ribs 39 provided around the grip 31 have substantially the same height as the lower surface of the protrusion 34. Therefore, it is possible to avoid a situation in which the peripheral rib 39 interferes with the finger of the hand hung on the grip 31 and makes it difficult to hold the grip 31. Further, the lower edges of the reinforcing ribs 8 (general portions) on the side ribs 6, 7 side of the peripheral rib 39 are located below the lower edge of the peripheral rib 39, and It has the same height as the lower edge. As a result, the base 2 is further reinforced.

It should be noted that the present invention is not limited to the contents described in the above embodiment, and may be carried out as follows, for example. Of course, other application examples and modification examples not illustrated below are naturally possible.

(A) In the above embodiment, the handle hole 32 of the grip portion 31 has a substantially circular shape in a plan view, and the wall portion 33 and the protruding portion 34 are provided in an annular shape. It is not limited. For example, as shown in FIGS. 8 to 10, the handle hole 52 of the grip portion 51 may be formed in a substantially rectangular shape in a plan view. Further, the wall portion 53 of the grip portion 51 is configured to extend downward from a pair of side edge portions of the holding hole 52 that face each other, and the holding hole 52 is formed from the wall portion 53 and the lower edge portion of the wall portion 53. Both ends of the projecting portion 54 projecting outward are connected to the reinforcing ribs 55 provided along a pair of opposite side edges of the handle hole 52 where the wall portion 53 is not provided. May be Also in this configuration, the chamfered shape portion 57 is provided at the peripheral portion of the handle hole 52 of the main body portion 56 and the boundary portion between the wall portion 53 and the boundary portion between the wall portion 53 and the protruding portion 54. I will. Further, it is desirable that a connecting rib 58 that connects the protruding portion 54, the wall portion 53, and the main body portion 56 is provided. The connecting ribs 58 of this embodiment (FIG. 9) are not connected to the reinforcing ribs 55 that are connected to the side ribs (not shown) extending downward from the side edges of the main body 56, but the connecting ribs 58 are not connected. A reinforcing rib 55 that extends on the extension line of 58 and is connected to the connecting rib 58 is provided, and a lower edge portion of the reinforcing rib 55 in the vicinity of the grip portion 51 has substantially the same height as the lower surface of the protruding portion 54. It may be the position.

Even in the case of adopting the configuration, the hand truck 59 can be suitably carried by holding the grip portion 51 with the hand. Further, in the base 60 shown in FIG. 9, a portion of the reinforcing rib 55 connected to the wall portion 53 and both ends of the protruding portion 54, which is connected to the wall portion 53 and the protruding portion 54. , Or a bracing rib 61 that is connected to the opposite surface side of the vicinity thereof and that extends obliquely with respect to the reinforcing ribs 55 that extend in a lattice shape (separated by the reinforcing ribs 55 into a square shape). It is provided to connect the diagonals of the area). As a result, the strength of the peripheral portion of the grip portion 51 is increased, and an external force on the base 60 is less likely to act on the grip portion 51. Even when the handle hole 52 is not circular in plan view (rectangular in plan view in this example) as in the present example, the wall portion 53 and the protruding portion 54 are held. It is also possible to continuously provide along the opening edge (entire circumference) of the hand hole 52.

(B) In the above-described embodiment, one grip 31 is provided near the center of the base 2, but the number and arrangement of the grips 31 are not particularly limited and can be changed as appropriate. is there. For example, when the base 2 is relatively large, a grip may be provided near each side of the body 4. Further, in the above-described embodiment, the shape of the base 2 is not particularly limited, and for example, each side portion of the base 2 may be appropriately formed into an uneven shape or may be curved, or may be a flat surface. The visual shape may be a substantially circular shape or a polygonal shape other than a quadrangle.

Furthermore, the arrangement, number, and type of casters 3 attached to the base 2 are not particularly limited. For example, the two casters 3 on the handle 17 side are fixed casters with stoppers, and the casters 3 on the side opposite to the handle 17 are provided. The two casters 3 may be free casters. In addition, the configuration related to the handle 17 is not particularly limited and can be changed as appropriate. The handle 17 may be embodied as a dolly that cannot be attached.

(C) In the above embodiment, the main body 4 has a substantially flat plate shape, but it is not particularly limited to such a configuration, and it may be provided with an uneven portion in the up and down direction. It may be configured to include a grid-shaped rib provided on the upper surface side. Further, for example, on the upper surface side of the pedestal 2, when the tier stacking recesses are formed corresponding to the respective caster mounting portions 9 and the trolleys 1 are stacked vertically in the same direction, the casters 3 of the trolley 1 on the upper stage are stacked. However, it may be configured to be installed in the stacking recess of the lower carriage 1. Further, in the above embodiment, the distance between the casters 3 arranged in the longitudinal width direction of the base 2 (main body 4) is set to be slightly longer than the lateral width of the base 2 (main body 4), and It may be configured such that the base plates 2 can be stacked so that the base plates 2 are brought into contact with each other in the direction of being rotated by 90 degrees (so-called cross stacking). In this case, as in the above-described embodiment, the grip portion 31 is located above the lower edge portions of the side ribs 6 and 7 and the reinforcing ribs 8, so that the grip portion 31 of the cross-stacked trolley 1 is placed in the hand. In addition to being easy to hang and lift, it is possible to avoid a situation in which the grip portion 31 of the upper carriage 1 comes into contact with and damages the base 2 of the lower carriage 1.

In addition, the upper surface of the peripheral portion of the handle hole 32 of the main body portion 4 may be positioned below the upper surface of the general portion of the main body portion 4 to form a stepped shape. In this case, when the thickness of the base 2 is increased, the thickness of the grip portion 31 can be adjusted by lowering the height position of the peripheral portion of the handle hole 32 of the main body portion 4. Further, an article positioning portion that projects upward from the upper surface of the main body portion 4 and restricts relative displacement in the horizontal direction of the article placed on the placement surface 5 may be provided.

(D) In the above embodiment, the base 2 is made of polypropylene, but may be made of other resin material such as polyethylene, PET, polyamide.

DESCRIPTION OF SYMBOLS 1... Bogie, 2... Platform, 3... Casters, 4... Main body part, 5... Mounting surface, 6... Long side ribs, 7... Short side ribs, 8... Reinforcing ribs, 31... Grip Part, 32... Handle hole, 33... Wall part, 34... Projection part, 35... Chamfered shape part, 36... Connection rib, 39... Peripheral rib.

Claims (6)

A base on which articles can be placed,
In a trolley provided with a plurality of casters attached to the lower surface side of the pedestal,
The base is
In addition to having a main body part having a mounting surface on which an article can be mounted,
A handle hole provided in the main body portion; a wall portion extending downward from an opening edge of the handle hole; and a protrusion extending from the lower edge portion of the wall portion to the outside of the handle hole. Equipped with a gripping part
A chamfered shape portion is provided at a boundary portion between the peripheral portion of the handle hole of the main body portion and the wall portion, and a boundary portion between the wall portion and the protruding portion. Dolly. The trolley according to claim 1, wherein the wall portion and the protruding portion are continuously provided in an annular shape along an opening edge of the handle hole. The carriage according to claim 1 or 2, further comprising a connecting rib that connects the wall portion, the protruding portion, and the main body portion. A side rib extending along a side portion of the body portion, and a reinforcing rib provided on the inner side of the body portion with respect to the side rib and connected to the side rib,
The trolley according to claim 3, wherein at least one of the connecting ribs is connected to the reinforcing rib. A plurality of the connecting ribs are provided, and are provided at least at a point-symmetrical position around the center of the handle hole or at a line-symmetrical position about an imaginary straight line passing through the center of the handle hole. The trolley|bogie of Claim 3 or 4 characterized by the above-mentioned. Of the ribs extending downward from the main body portion, the lower edge portions of the peripheral ribs provided around the grip portion have substantially the same height as the lower surface of the projecting portion, and are located closer to the main body portion than the peripheral ribs. The carriage according to any one of claims 1 to 5, wherein the rib on the side portion extends below the lower surface of the protruding portion.

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