JP2001010504A - Carriage for transport - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide carriages for transport capable of being easily and stably stuck to each other in compact. SOLUTION: This carriage 11 for transport is provided with a pair of left and right front wheels 13 formed by universal wheels, and a pair of left and right rear wheels 14 formed by fixed wheels on its bottom surface of a base plate 12. Insertion holes 16 for the pair of left and right front wheels are formed on a rear end of the base plate 12, and insertion holes 15 for the pair of left and right rear wheels are formed on a front end of the same. Cylindrical supporting legs 17 are respectively suspended from corner parts of the bottom surface of the base plate 12, engagement recessed parts respectively engageable with the lower ends of the supporting legs 17 are pierced on an upper surface of the base plate 12, and drain holes 19 are pierced from the engagement recessed parts toward the lower ends of the supporting legs 17. The sum of heights of the base plates 12 and the supporting leg 17 is approximately half of the total height of the carriages 11 for transport.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention can be used as an ordinary transport cart when used,
The present invention relates to a transport cart that can be stored small and compact by stacking a plurality of transport carts vertically when not in use.

[0002]

2. Description of the Related Art Conventionally, as this type of transport cart, a transport cart disclosed in JP-A-7-291132 is known. In this transport trolley, a plurality of free wheels configured to be eccentrically rotatable are provided on a lower surface of a horizontal load support plate, and a wheel fixing portion is formed on an upper surface of the load support plate. Further, the wheel fixing portion is formed, for example, by forming a concave groove capable of engaging with the universal wheel on the eccentric rotation locus of each universal wheel, and engages with the universal wheel of the transportable truck to be stacked. It is configured so that it can be fixed in a combined state.

[0003] When a plurality of transport vehicles are to be stacked, first, another transport vehicle to be stacked is placed on the load support plate of the transport vehicle. Subsequently, each free wheel of the upper carrier is engaged with and fixed to each wheel fixing portion of the lower carrier, thereby rotating and rolling each free wheel of the upper carrier. Is regulated, and the upper-stage carrier can be stably supported.

[0004]

However, in order to stably stack a plurality of carriages in the conventional carriage, all the free wheels of the upper carriage are replaced with the wheels of the lower carriage. It was necessary to engage the fixing part and fix it. At this time, since the upper free wheels are usually arranged in various directions, it is very troublesome and time consuming to engage all the free wheels with the wheel fixing portions. Was.

On the other hand, among a plurality of transport vehicles in a stacked state, the upper transport vehicle has only a shallow engagement of the lower end of the universal wheel with the lower wheel fixing portion. For this reason, the engaging portion is very wobble, and the stability of these stacked transport vehicles is not very high.

Further, as described above, since a plurality of transport vehicles are stacked by the lower end of the upper free wheel being shallowly engaged with the lower wheel fixing portion, a plurality of transport vehicles are stacked. The total height of the carts was almost equal to the sum of the heights of the carts, and could not be stored small and compact.

The present invention has been made by focusing on the problems existing in the prior art as described above. An object of the present invention is to provide a transport trolley that can easily and stably stack a plurality of transport trolleys and that can be stacked small and compact.

[0008]

According to one aspect of the present invention, there is provided a transport trolley having a front wheel and a rear wheel provided on a bottom surface of a base plate. hand,
A front wheel insertion portion for inserting a rear wheel is provided at a front portion of the base plate, and a front wheel insertion portion for inserting a front wheel is provided at a rear portion of the base plate, and a plurality of transport vehicles are provided. When stacking up and down, insert the rear wheel of the transport truck located above into the rear wheel insertion part of the transport truck located below, and insert the rear wheel into the front wheel insertion part of the transport truck located below. It is configured to insert a front wheel of a transport truck located therein.

According to a second aspect of the present invention, there is provided the transportation cart according to the first aspect, wherein the rear wheel is constituted by a fixed wheel, and the front wheel is constituted by a free wheel capable of changing directions. The rear wheel insertion portion is formed in a square hole shape, and the front wheel insertion portion is formed in a circular hole shape.

According to a third aspect of the present invention, there is provided the transport cart according to the first or second aspect, wherein a support leg is provided on the bottom surface of the platform, and a plurality of transport carts are vertically stacked. At this time, the supporting legs of the transport cart located above are configured to abut on the base plate of the transport cart located below.

According to a fourth aspect of the present invention, there is provided the transportation cart according to the third aspect, wherein the sum of the heights of the base plate and the support legs is substantially half of the total height of the transportation cart. It is formed in.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG. 1, a carriage 11 includes a base plate 12 formed in a rectangular plate shape from a synthetic resin such as polypropylene or polyethylene, and a pair of left and right front wheels fixed to the bottom surface of the base plate 12. 13 and a rear wheel 14. As shown in FIG. 1 and FIG. 2, the pair of left and right front wheels 13 is constituted by a freely changeable free wheel, and is fixed to the front end of the bottom surface of the base plate 12. The pair of left and right rear wheels 14 are constituted by fixed wheels that cannot change direction, and are fixed to the rear end of the bottom surface of the base plate 12.

At the front end of the base plate 12, a pair of left and right rear wheel insertion holes 15 are formed in a rectangular shape, and at the rear end of the base plate 12, a pair of left and right front wheel insertion holes 16 are circular. It is drilled like a hole. As shown in FIG. 2, these rear wheel insertion holes 15 are provided at point-symmetric positions with respect to the rear wheels 14 about the center point O of the base plate 12, and the front wheel insertion holes 16 are provided on the front wheels 13.
Are provided at point-symmetric positions about the center point O.
Further, the front wheel insertion hole 16 is formed in such a size that the entire rotation locus of the front wheel 13 can be inserted.

As shown in FIGS. 1 to 3, cylindrical support legs 17 are hung at four corners on the bottom surface of the base plate 12. As shown in FIG. Further, as shown in FIG. 3, the sum h of the heights of the support legs 17 and the base plate 12 is formed so as to be approximately half of the total height H of the transport trolley 11. As shown in FIG. 4, a flat circular engaging recess 18 that engages with the lower end of the support leg 17 is formed at a predetermined depth on the upper surface of the base plate 12 located directly above each support leg 17. ing. Further, a drain hole 19 is formed in the vertical direction from the engagement concave portion 18 to the lower end of the support leg 17 so that rainwater or the like can be prevented from accumulating on the base plate 12.

The operation of the carriage 11 will be described below. When the transport cart 11 is used, the transport cart 11 or the article to be loaded is pushed by pushing the transport cart 11 or the article in the traveling direction while the article is placed on the base plate 12. The load can be carried. Further, by pushing the transport trolley 11 or the object to be loaded in a desired direction, the front wheels 13 composed of free wheels can be rotated in that direction, and the traveling direction of the transport trolley 11 can be easily changed. be able to.

On the other hand, when two transport vehicles 11 are stacked one on top of the other and stored, first, as shown in FIG. 1, the transport vehicles 11 are located at the front end of the transport vehicle 11 located at the bottom and at the top. Like stacking the rear end of the transport cart 11,
That is, the transport carts 11 that are vertically in contact with each other are placed so that the front-rear direction is reversed. Further, as shown by a solid line and a two-dot chain line in FIG. 4, the lower end of each support leg 17 of the transporting cart 11 located above is moved to the transporting cart 1 located below.
The first base plate 12 is engaged with the engaging recess 18 on the upper surface.

At this time, the upper and lower transport carts 11 can be prevented from shifting in the horizontal direction due to the engagement relationship between the support legs 17 and the engagement recesses 18. Further, as shown in FIG. 5, the transport cart 11 located above is inserted into the rear wheel insertion hole 15 at the front end of the transport cart 11 located below.
Since the rear wheel 14 is inserted and engaged, lateral displacement can be more effectively prevented.
On the other hand, the front wheel 13 of the transport vehicle 11 located above is rotatably inserted into the front wheel insertion hole 16 at the rear end of the transport vehicle 11 located below.

When three transport carts 11 are stacked up and down, the two transport carts 11 are stacked up and down in the same manner as when the two transport carts 11 are stacked. At this time, as shown in FIG. 6, the front wheel 13 and the rear wheel 14 of the transporting cart 11 at the uppermost position are respectively the transporting cart 1 located at the center.
It is inserted into the front wheel insertion hole 16 and the rear wheel insertion hole 15 and is disposed close to the base plate 12 of the transport vehicle 11 at the lowest position. The same applies to a case where four or more transport carts 11 are stacked up and down.

The effects exerted by the above embodiment will be described below. The carriage 11 of the embodiment has a rear wheel insertion hole 15 for inserting the rear wheel 14 at the front end of the base plate 12, and a front wheel at the rear end of the base plate 12. The front wheel insertion hole 16 for inserting the 13 is formed. For this reason, by inserting the rear wheels 14 and the front wheels 13 of the transport vehicle 11 located above into the rear wheel insertion holes 15 and the front wheel insertion holes 16 of the transport vehicle 11 located below, a plurality of The transport carts 11 can be easily stacked and stored.

Further, the rear wheels 14 and the front wheels 1 of the transport cart 11 located above
3 is a rear wheel insertion hole 1 for a transport trolley 11 located below.
5 and the front wheel insertion hole 16. Therefore, the front wheels 13 and the rear wheels 14 are reliably prevented from rotating on the base plate 12 of the transport vehicle 11 located below and moving in the lateral direction, and the upper and lower transport vehicles 11 are stably stacked. be able to.

In addition, since the lower ends of the rear wheels 14 and the front wheels 13 of the transport vehicle 11 located above are disposed below the base plate 12 of the transport vehicle 11 located below, The distance between the base plates 12 of the transport vehicle 11 can be shortened. Therefore, the total height of the plurality of transport vehicles 11 stacked can be reduced, and the plurality of transport vehicles 11 can be stacked small and compact.

Since the pair of left and right rear wheels 14 is constituted by fixed wheels, and the pair of left and right front wheels 13 is constituted by free wheels, the direction can be easily changed during transportation. The operability of the carriage 11 can be improved.

Further, since the rear wheel insertion hole 15 is formed in a rectangular hole shape and the front wheel insertion hole 16 is formed in a circular hole shape, the rear wheel 14 and the front wheel 13 are inserted. Occasionally, it is possible to prevent a large wobble, and the upper and lower transport carts 11 can be stably stacked. In addition, since the pair of left and right front wheels 13 can freely rotate in the front wheel insertion holes 16, when inserting the front wheels 13 into the front wheel insertion holes 16, the front wheels 13 There is no need to insert the wheels 13 in a predetermined direction, and the stacking operation can be performed very easily and quickly. Further, according to this configuration, the transport trolley 1
It is also possible to recognize the front-back direction at a glance.

The support legs 1 are provided on the bottom of each corner of the base plate 12.
7 is suspended, and the base plate 1 of the transport trolley 11 located below
2, the stability of the transport carts 11 stacked vertically can be further improved.

The upper surface of the base plate 12 directly above each support leg 17 is provided with an engagement recess 18 which engages with the lower end portion of the support leg 17, so that the transport vehicles 11 stacked one above the other In the lateral direction can be suppressed, and the stability can be further improved. In addition, according to this configuration, the place where the support leg 17 is placed can be easily grasped.

The sum h of the heights of the base plate 12 and the support legs 17
However, since the height is formed to be approximately half of the total height H of the transport trolley 11, a plurality of transport trolleys 11 can be stacked in a small and compact manner.

Since the drain hole 19 is formed from the engagement concave portion 18 to the lower end of the support leg 17, the base plate 1
2. The drainage of the upper surface can be reliably performed. When a plurality of transport vehicles 11 are vertically stacked, the drain holes 19 are communicated from the uppermost transport vehicle 11 to the lowermost transport vehicle 11. Therefore, also in this case, a water draining effect can be exhibited.

The front wheel 13 and the rear wheel 14
Are provided at the corners, it is possible to improve the stability of the transport trolley 11 on which the object is placed and to improve the operability during transport.

Since the support legs 17 are provided at the corners of the base plate 12, the stability of the transport vehicles 11 stacked vertically can be further improved. This embodiment can be embodied with the following modifications.

The rear wheel 14 is constituted by a free wheel, and the rear wheel insertion hole 15 is formed in a circular shape. Alternatively, the front wheel 13 is formed by a fixed wheel, and the front wheel insertion hole 16 is formed in a rectangular hole shape.

The diameter of the wheels constituting the front wheels 13 is
Be larger than the diameter of the wheels that constitute the rear wheels 14. For example, the diameter of the wheel forming the front wheel 13 may be 4 inches, and the diameter of the wheel forming the rear wheel 14 may be 3 inches.

With this configuration, the stability of the transport cart 11 when the object is placed thereon can be further improved, and the operability during transport can be improved.

As shown in FIG. 7, one front wheel 13 is provided at the center of the front end of the base plate 12 and
One front wheel insertion hole 16 is formed in the center of the rear end.
With this configuration, the configuration of the transport trolley 11 can be simplified.

Front wheel 1 provided on the bottom surface of base plate 12
The number of the three or rear wheels 14 is three or more, and the number of the front wheel insertion holes 16 or the number of the rear wheel insertion holes 15 is made corresponding to the number. Alternatively, the number of the front wheels 13 and the number of the rear wheels 14 are three or more, and the number of the front wheel insertion holes 16 and the number of the rear wheel insertion holes 15 are formed in correspondence with the numbers.

With this configuration, a heavier object can be stably mounted and transported. As shown in FIG. 8A, the front wheel insertion hole 16
In a rectangular hole so that the lower part of the front wheel 13 can be inserted.

In the case of such a configuration, the front wheel insertion hole 1
6 can be formed small, so that the object can be prevented from falling. As shown in FIG. 8B, instead of drilling the rear wheel insertion hole 15 at the front end of the base plate 12, a notch 21 is formed by cutting the front end of the base plate 12 on both sides in a rectangular hole shape. The rear wheel insertion portion is formed, and the support leg 17 and the engagement recess 18 are provided slightly closer to the center than the corner portion of the base plate 12.

Even in such a configuration, a plurality of transport carts 11 can be easily and stably stacked, and a small and compact stack can be provided. In addition to the four corners of the base plate 12, for example, the base plate 1
The support leg 17 is hung at the center of 2.

With this configuration, the stability of the transport carts 11 stacked vertically can be further improved. Instead of providing the support legs 17 at the corners of the base plate 12, the support legs 17 are provided on the bottom surface of the base plate 12 in a range surrounded by the pair of left and right front wheels 13 and the pair of left and right rear wheels 14.

In the case of such a configuration, the transport cart 11
When the vehicle gets over the step, it is possible to effectively suppress the support leg 17 from being broken by hitting the step. A configuration in which the lower end of the support leg 17 and the engagement recess 18 are fitted;

In the case of such a configuration, the transport cart 11
Can be stacked more stably. The front wheel 13 is provided on the lower surface of the base plate 12 around the front wheel 13.
While hanging the cylindrical support legs 17 surrounding the
A rectangular cylindrical support leg 17 surrounding the rear wheel 14 is hung on the lower surface of the base plate 12 around the rear wheel 14. Further, at this time, a flat circular engagement recess 18 or a flat annular engagement groove which engages with the lower end of the cylindrical support leg 17 is provided on the upper surface of the base plate 12 around the front wheel insertion hole 16. Drilling,
The upper surface of the base plate 12 around the rear wheel insertion hole 15 is provided with a flat rectangular engaging recess 18 or a flat rectangular annular engaging groove for engaging with the lower end of the rectangular tubular support leg 17. Good to do.

In the case of such a configuration, the transport cart 11
When the vehicle gets over the step, it is possible to effectively suppress the support leg 17 from being broken by hitting the step. A flat circular accommodation recess is provided on the upper surface of the base plate 12 directly above the front wheel 13, a flat rectangular accommodation recess is provided on the upper surface of the base plate 12 immediately above the rear wheel 14, and the support leg 1 is provided.
7 is formed shorter by the depth of the housing recess.

In this case, the height of the support leg 17 is reduced, and the transport trolley 11 located two upper positions is formed.
Since the lower end portions of the front wheel 13 and the rear wheel 14 can be accommodated in the accommodation recesses, the transport carts 11 can be stacked even more compactly. Furthermore, since the support leg 17 can be formed short, it is also possible to prevent the support leg 17 from being broken by hitting a step or the like.

Drilling a plurality of drain holes 19 in the base plate 12 in the vertical direction. In such a configuration, the base plate 1
2 can be more effectively prevented from accumulating on the surface.

The base plate 12 and the like are manufactured using wood. -Omit at least one of the support leg 17, the engagement recess 18 and the drain hole 19.

In the case of such a configuration, the transport cart 11
Can be simplified. Further, technical ideas that can be grasped from the embodiment will be described below. (1) The transporting trolley according to claim 3 or 4, wherein an engaging concave portion is provided on an upper surface of the base plate to be engaged with a lower end of the support leg.

With this configuration, a plurality of transport carts can be stacked more stably. (2) The transport cart according to any one of (3), (4) and (1), wherein a drain hole is formed from the upper surface of the base plate to the lower end of the support leg.

With such a configuration, it is possible to easily drain water from the upper surface of the base plate. (3) The transport vehicle according to any one of (3), (4), (1) and (2), wherein the support leg is provided at a corner of the base plate.

In this case, a plurality of transport vehicles can be stacked more stably.

[0049]

As described above in detail, according to the present invention, the following effects can be obtained. According to the transport cart of the first aspect of the present invention, a plurality of transport carts can be stacked easily and stably, and also small and compact.

According to the transportation cart of the second aspect, in addition to the effect of the first aspect, the object can be easily transported. According to the transportation cart of the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, a plurality of transportation carts can be stacked more stably.

According to the transport cart of the fourth aspect, in addition to the effects of the third aspect, a plurality of transport carts can be stacked even smaller and more compactly.

[Brief description of the drawings]

FIG. 1 is an exemplary perspective view illustrating a state in which transport carts according to an embodiment are stacked;

FIG. 2 is a bottom view showing the transport cart according to the embodiment.

FIG. 3 is a side view showing the transport cart according to the embodiment.

FIG. 4 is a partially enlarged cross-sectional view showing the transport trolley taken along line 4-4 in FIG. 3;

FIG. 5 is a bottom view showing the transport carts of the embodiment in a stacked state.

FIG. 6 is a side view showing the transport carts of the embodiment in a stacked state.

FIG. 7 is a bottom view showing a carriage other than the embodiment.

FIGS. 8A and 8B are bottom views each showing a transport trolley other than the embodiment.

[Explanation of symbols]

11: transporting trolley, 12: base plate, 13: front wheel, 14 ...
Rear wheel, 15 ... rear wheel insertion hole as rear wheel insertion part, 1
6 ... front wheel insertion hole as front wheel insertion part, 17 ... support leg.

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[Procedure amendment]

[Submission date] May 29, 2000 (2005.2
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

According to one aspect of the present invention, there is provided a transport trolley having a front wheel and a rear wheel provided on a bottom surface of a base plate. hand,
A front wheel insertion portion for inserting a rear wheel is provided at a front portion of the base plate, and a front wheel insertion portion for inserting a front wheel is provided at a rear portion of the base plate, and a plurality of transport vehicles are provided. When stacking up and down, insert the rear wheel of the transport truck located above into the rear wheel insertion part of the transport truck located below, and insert the rear wheel into the front wheel insertion part of the transport truck located below. It is configured to insert the front wheel of the transport cart located , provided with support legs on the bottom surface of the base plate, from the top of the base plate
A drain hole is formed at the lower end of the support leg .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010] dolly of the invention described in claim 3 is the invention according to claim 1 or claim 2, when a stack of dolly of several up and down, the dolly located above The support leg is configured to abut on a base plate of a transport trolley located below.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0049

[Correction method] Change

[Correction contents]

[0049]

As described above in detail, according to the present invention, the following effects can be obtained. According to dolly of the invention described in claim 1, probability it is possible to stack a plurality of dolly easily and stably, can be stacked in small and compact, the further base plate upper surface of the drainage
Ru can be done indeed.

Claims (4)

[Claims] 1. A transport vehicle having a front wheel and a rear wheel provided on a bottom surface of a base plate, wherein a rear wheel insertion portion for inserting a rear wheel is provided at a front portion of the base plate, At the rear of the base plate, a front wheel insertion portion for inserting a front wheel is provided, and when a plurality of transportation vehicles are stacked up and down, the front wheel insertion portion is located at the rear wheel insertion portion of the transportation vehicle located below. A transport trolley configured to insert a rear wheel of the transport trolley and insert a front wheel of an upper transport trolley into a front wheel insertion portion of the lower transport trolley. 2. The rear wheel is constituted by a fixed wheel,
The transporting trolley according to claim 1, wherein the front wheel is formed of a freely changeable wheel, the rear wheel insertion portion is formed in a square hole shape, and the front wheel insertion portion is formed in a circular hole shape. 3. A support leg is provided on a bottom surface of the base plate, and when a plurality of transport bogies are stacked one on top of the other, the support leg of the transport bogie located above the base plate of the transport bogie located below. The transporting trolley according to claim 1, wherein the transporting trolley is configured to contact the upper part. 4. The transport trolley according to claim 3, wherein the sum of the heights of the platform plate and the support legs is formed to be approximately half the total height of the transport trolley.