JP6741287B2 - Carriers and connecting rods - Google Patents

Description

The present invention relates to a carriage used for carrying luggage.

As a method of using the carrier trucks, a method is known in which the carrier trucks are connected by connecting rods to form a row of the carrier trucks, and a plurality of carrier trucks travel at one time. Patent Document 1 discloses an example of a carrier truck that can be used as described above.

Patent No. 2843295

The larger the number of the carriages forming the row of the carriages, the easier the carriages located behind the row of the carriages meander.
An object of the present invention is to prevent the carriage from meandering when the connected carriages travel, and prevent lateral displacement or overturning of luggage.

A carriage for solving the above-mentioned problems is formed with a loading platform having a deck surface on which luggage is loaded, a hole provided in the loading platform, into which an insertion portion provided in a connecting rod connecting the transportation vehicles is inserted, and the insertion is performed. And a connecting portion that comes into contact with the connecting rod so that the connecting rod inserted into the hole and the carriage do not rotate relative to each other around an axis along the normal to the deck surface.

In a state in which a row of the carriage is formed by connecting the carriage and another carriage with a connecting rod, when the carriage precedes, relative rotation between the carriage and the connecting rod is It is regulated by the connecting part. For this reason, the portion connecting the above-mentioned transport carriage and the connecting rod does not cause a contact with the traveling direction of another transport carriage that follows. For this reason, when the row of the carrier trucks travels, another trailing carrier truck does not easily meander, and it is possible to travel while maintaining a stable posture. Further, in a state in which the carriage is connected to another carriage by a connecting rod to form a row of the carriages, when another carriage precedes, the relative movement between the carriage and the connecting rod. Rotation is restricted by the connecting portion. Therefore, the portion that connects the transport carriage and the connecting rod does not become a factor that touches the traveling direction of the trailing transport carriage. For this reason, when the row of the carrier trucks travels, the trailing carrier trucks do not meander easily and can travel while maintaining a stable posture, and it is possible to prevent lateral displacement and overturning of luggage.

In an example of the carrier truck, the connecting portion includes a pair of walls facing each other so that the connecting rod can be sandwiched.
According to the above-mentioned carrier, rotation of the carrier and the connecting rod in one direction around the axis along the normal to the deck surface is restricted by one of the pair of walls, and the connecting rod is aligned with the normal to the deck surface. Rotation in the other direction around the axis along the axis is restricted by the other of the pair of walls. Therefore, it is possible to suppress the meandering of the carrier truck and prevent the luggage from slipping sideways or falling.

In an example of the carrier truck, the hole is an elongated hole extending in the front-rear direction of the luggage carrier, and the luggage carrier includes a covering portion that covers at least a part of the hole from the deck surface side.
According to the above carrier, the amount of the connecting rod protruding outward from the side surface of the carrier is reduced by moving the connecting rod inserted in the long hole toward the center of the carrier in the front-rear direction of the carrier. For this reason, for example, when the above-mentioned carriage and another carriage are connected by a connecting rod, the distance between these carriages can be narrowed and the space required for storage can be narrowed. Further, since at least a part of the long hole is covered with the covering portion, it is possible to prevent stress from being concentrated on a portion around the long hole in the loading platform. Therefore, even if a heavy load is placed on the deck surface, the loading platform is unlikely to be deformed.

Further, the connecting rod movable inside the long hole is covered by the covering portion and is not exposed on the deck surface. Therefore, in the state where the luggage is placed, the connecting rod and the luggage do not come into contact with each other and the coupling rod can be stored. Further, when the transport vehicle travels on a road surface having a step, the possibility that the connecting rod floats up from the long hole and comes into contact with the luggage and damages the luggage is reduced.

In an example of a carrier truck, the cargo bed includes at least a pair of wheel restricting portions on which wheels of another carriage vehicle can be arranged, and an end portion of the wheel restricting portion provided at an end portion in the front-rear direction of the cargo carrier is cut. Missing.

The wheel regulation unit regulates the movement of the wheels of another carrier truck mounted on the luggage carrier. For this reason, the stability when the carriers are stacked is improved.
A connecting rod of a carrier for solving the above-mentioned problems is a connecting rod of a carrier for connecting at least two carrier vehicles having a carrier having a deck surface on which luggage is placed, and the connecting rod is attached to the carrier. A cross-sectional shape of the insertion portion that includes an insertion portion that is inserted into the formed hole and that is orthogonal to the axis of the insertion portion is such that the connecting rod in which the insertion portion is inserted into the hole and the transport carriage are the decks. It has a shape capable of restricting relative rotation around an axis along the surface normal.

When the carriages are connected to each other by the connecting rods, the relative rotation between one of the carriages and the connecting rods is performed in the same manner as when the conveying carriage including the connecting portion and another carriage are connected by the connecting rods. Is regulated. Therefore, the posture of the carrier can be stabilized.

In an example of a connecting rod of a carrier, the hole is a long hole extending in the front-rear direction of the luggage carrier, the carrier is a surface extending in the front-rear direction of the carrier truck to define the hole, the hole A first portion that includes a first surface and a second surface that are opposed to each other, and a cross-sectional shape of the insertion portion extends along the first surface and is in contact with the first surface; and , A second portion at least a portion of which is in contact with the second surface.

When the insertion portion of the connecting rod is inserted into the hole of the luggage carrier, the first portion of the coupling rod contacts the first surface of the luggage carrier and the second portion of the coupling rod contacts the second surface of the luggage carrier. By doing so, relative rotation between the loading platform and the connecting rod is restricted.

In an example of a connecting rod of a carrier, the hole provided in one carrier of the at least two carrier is the elongated hole, and the hole provided in the other carrier is circular, The first surface and the second surface are surfaces parallel to the front-rear direction of the carrier, and the second portion extends along the second surface and contacts the second surface. However, the cross-sectional shape of the insertion portion connects one end of the first portion and one end of the second portion, and follows the shape of the hole provided in the other carriage. No. 1 circular arc portion, and a second circular arc that connects the other end portion of the first portion and the other end portion of the second portion, and follows the shape of the hole provided in the other carriage. Including parts.

When the insertion portion of the connecting rod is inserted into the circular hole, the first circular arc portion and the second circular arc portion are along the surface defining the circular hole of the luggage carrier, so that the luggage carrier and the coupling rod are smooth. Can rotate relative to. As described above, since the insertion portion of the connecting rod can be used as a portion for relatively rotating the carriage and the connecting rod, the range of applicable carriages is wide.

ADVANTAGE OF THE INVENTION According to the carrying vehicle and its connecting rod of this invention, when a connected carrying vehicle travels, it becomes difficult for a carrying vehicle to meander, and it is possible to prevent lateral displacement or overturning of luggage.

1 is a perspective view of a carrier truck according to a first embodiment. The top view of the carrier vehicle of FIG. The bottom view of the carrier of FIG. The side view of the carrier of FIG. FIG. 3 is a perspective view showing a state in which another carrier is mounted on the carrier of FIG. 1. The side view of the connecting rod of FIG. The perspective view which shows the 1st connection state of the connected trolley|bogie. The enlarged view of each connection part of FIG. The perspective view which shows the 2nd connection state of the connected trolley|bogie. The enlarged view of each connection part of FIG. The enlarged view of each connection part of 2nd Embodiment. The enlarged view of each connection part of 3rd Embodiment. FIG. 13 is a cross-sectional view of the connecting rod inserted into the first connecting portion of FIG. 12. FIG. 13 is a cross-sectional view of the connecting rod inserted into the second connecting portion of FIG. 12. The enlarged view of the connection part of a modification.

(First embodiment)
FIG. 1 shows one of a plurality of carriages 10 that can be connected by a connecting rod 100 (see FIG. 6). The carrier 10 includes a carrier 20 and two sets of wheels 11. A pair of wheels 11 constitutes one set. The material forming the luggage carrier 20 is resin. A through hole 21 is formed in the central portion of the luggage carrier 20 to reduce the weight of the luggage carrier 20. The shape of the luggage carrier 20 in a plan view is a rectangular shape in which the front-back direction of the luggage carrier 20 corresponds to the longitudinal direction and the width direction orthogonal to the longitudinal direction corresponds to the lateral direction.

The luggage carrier 20 has a plurality of surfaces. The plurality of surfaces include a deck surface 20A shown in FIG. 2, a bottom surface 20B shown in FIG. 3, a first side surface 20C shown in FIG. 2, a second side surface 20D shown in FIG. A pair of long side surfaces 20E are included. The deck surface 20A is a surface on which luggage is placed. The bottom surface 20B is a surface formed on the cargo bed 20 on the opposite side of the deck surface 20A. The first side surface 20C is a surface formed at one end portion (hereinafter, “first front and rear end portion 20F”) in the front-rear direction of the loading platform 20. The second side surface 20D is a surface formed at the other end portion (hereinafter, “second front and rear end portion 20G”) in the front-rear direction of the luggage carrier 20. The pair of long side surfaces 20E are surfaces formed on the sides of the luggage carrier 20 so as to extend in the front-rear direction of the luggage carrier 20. As shown in FIG. 3, the bottom surface 20</b>B is provided with grid-shaped ribs 22 for increasing the strength of the luggage carrier 20.

One of the two sets of wheels 11 is a free wheel and the other is a fixed wheel. Each free wheel is attached to a corner of the bottom surface 20B of the first front and rear end portion 20F. Each of the fixed wheels is attached to a corner of the bottom surface 20B of the second front and rear end portion 20G. Each free wheel is rotatable about an axis (hereinafter referred to as "Z axis") along the normal to the deck surface 20A. The traveling direction of the carriage 10 is changed by the rotation of the swivel vehicle. It should be noted that the number of wheels 11 provided on the carriage 10 and the mounting position of the wheels 11 can be arbitrarily changed.

As shown in FIG. 1, the cargo bed 20 includes a pair of side walls 23, a pair of first end regulating portions 24, a pair of second end regulating portions 25, two pairs of wheel regulating portions 26, and a first connection. The unit 30 and the second connecting unit 40 are provided. Each of the connecting portions 30 and 40 is a portion used to connect the carrier vehicle 10 and another carrier vehicle 10 with a connecting rod 100 (see FIG. 6).

The pair of side walls 23 are provided to prevent the luggage from falling from both ends of the luggage carrier 20 in the width direction. The first end portion restricting portion 24 is provided so as to project upward from the deck surface 20A of the first front and rear end portion 20F in order to prevent the luggage from falling from the first front and rear end portion 20F. The second end restricting portion 25 is provided so as to project upward from the deck surface 20A of the second front and rear end portion 20G in order to prevent the luggage from falling from the second front and rear end portion 20G. The second end restricting portion 25 is formed with an inclined surface 25A that is inclined downward in the front-rear direction of the luggage carrier 20 from the second side face 20D side toward the center side of the luggage carrier 20. For this reason, for example, when the operator moves the load on the platform 20 to the second front and rear end portion 20G to move the load to the second front and rear end portion 20G, the load is moved to the second front and rear end portion 20G. It is easy to ride on the inclined surface 25A of the end regulating portion 25. Therefore, the load on the operator when the luggage is dragged off the luggage carrier 20 is reduced.

The height at which the second end restricting portion 25 projects from the deck surface 20A is lower than or the same as the height at which the pair of side walls 23 projects from the deck surface 20A. When an operator drags the load placed on the luggage carrier 20 from the second front and rear end portion 20G side, the luggage is prevented from falling toward both widthwise end portions of the luggage carrier 20 and falling.

The upper surface of the second end regulating portion 25 has a flat shape. When the luggage rides on the upper surface of the second end regulation portion 25, the luggage moves smoothly. For this reason, the operator can easily drag down the load, and the possibility that the bottom surface of the load is damaged due to contact with the second end restriction portion 25 is reduced.

Each wheel restricting portion 26 includes a groove 26A which is recessed with respect to the deck surface 20A so as to accommodate the wheel 11 of another carriage 10 (see FIG. 5). The width of the groove 26A is large enough to restrict the rotation of the wheel 11 with respect to the platform 20. In a portion of the loading platform 20 near the first front and rear end portions 20F, the pair of wheel restricting portions 26 formed side by side in the width direction of the loading platform 20 form a first set of wheel restricting portions 26. In a portion of the platform 20 near the second front and rear end portion 20G, the pair of wheel restricting portions 26 formed side by side in the width direction of the cargo platform 20 configure a second set of wheel restricting portions 26.

The first set of the wheel restricting portions 26 is configured so as to be able to accommodate one set of wheels 11 provided on another carriage 10 (see FIG. 5). The groove 26A of the wheel restricting portion 26 is open on the first side surface 20C. The second set of wheel restricting portions 26 is configured to be able to accommodate another set of wheels 11 provided on another transport carriage 10. The groove 26A of the wheel restricting portion 26 is open on the second side surface 20D.

As shown in FIG. 5, a plurality of carriages 10 can be stacked. When the second transport vehicle 10 is placed on the loading platform 20 of the first transport vehicle 10, the wheels 11 of the second transport vehicle 10 are housed in the wheel restriction units 26, respectively. Since the wheel restriction unit 26 restricts the rotation of the wheel 11 with respect to the luggage carrier 20, the position of the second carrier 10 is stabilized. Since the groove 26A of the wheel restriction portion 26 is open on the first side surface 20C and the second side surface 20D, it is easy to accommodate the swivel vehicle in which the position of the wheel 11 changes.

As another configuration, the groove 26A of the wheel restricting portion 26 does not have to be open on the second side surface 20D. When the wheel restricting unit 26 accommodates the wheel 11 of another carrier 10, the wheel 11 can be restricted from moving in the front-rear direction of the luggage carrier 20. As yet another configuration, the groove 26A may have a structure that becomes shallower toward the second side surface 20D. Even when the wheel 11 is a free wheel, the groove 26</b>A of the wheel restriction portion 26 easily accommodates the wheel 11, and the wheel 11 is less likely to move in the front-back direction of the luggage carrier 20.

As shown in FIG. 6, the connecting rod 100 has a U-shape. The connecting rod 100 is made of metal and includes a first insertion portion 101, a second insertion portion 102, and a rod body 103. Each of the insertion portions 101 and 102 is a portion to be inserted into the first connecting portion 30 and the second connecting portion 40 (see FIG. 2) of the luggage carrier 20. The shape of the cross section orthogonal to the center line of the connecting rod 100 is circular.

As shown in FIG. 1, the first connecting portion 30 is provided at the first front and rear end portions 20F of the luggage carrier 20. The upper surface 30A of the first connecting portion 30 is lower than the deck surface 20A. The first connecting portion 30 is formed with a first hole 31 into which the first inserting portion 101 of the connecting rod 100 is inserted. The first hole 31 penetrates the first connecting portion 30. In another example, the first hole 31 does not penetrate the first connecting portion 30.

As shown in FIGS. 2 and 4, the second connecting portion 40 is provided at the second front and rear end portion 20G of the luggage carrier 20. The upper surface 40A of the second connecting portion 40 constitutes the same plane as the deck surface 20A. A second hole 41 into which the second insertion portion 102 of the connecting rod 100 is inserted is formed in the second connecting portion 40. The second hole 41 is a long hole extending in the front-rear direction of the luggage carrier 20 and penetrates the second connecting portion 40. In another example, the second hole 41 does not penetrate the second connecting portion 40. The major axis of the second hole 41 is longer than the length of the rod body 103.

The second connecting portion 40 includes a pair of walls 42, a covering portion 43, and a receiving portion 44. The pair of walls 42 are opposed to each other so that the rod body 103 of the connecting rod 100 can be sandwiched via the groove 42A formed so as to be recessed with respect to the deck surface 20A. The covering portion 43 covers the second hole 41. The upper surface of the covering portion 43 constitutes the same plane as the deck surface 20A. The height of the upper surface of the covering portion 43 is not limited to the same as the deck surface 20A, and may be higher or lower than the deck surface 20A.

A portion of the second hole 41 on the second side surface 20D side (hereinafter, “hole end portion 41A”) is opened so that the second insertion portion 102 of the connecting rod 100 can be inserted from above the luggage carrier 20. There is. In one example, the width of the hole end portion 41A becomes narrower toward the second side surface 20D side. The receiving portion 44 is a portion for receiving the second insertion portion 102 of the connecting rod 100 inserted into the hole end portion 41A.

According to the carrier 10, since the second hole 41 is covered with the covering portion 43, the stress is suppressed from being concentrated on the portion around the second hole 41 in the luggage carrier 20. Therefore, even if a heavy load is placed on the deck surface 20A, the loading platform 20 is unlikely to be deformed.

In FIG. 7, a row of the carriages 10 is formed by connecting the first carriage 10 and the second carriage 10 with the connecting rod 100, and the traveling direction of each carriage 10 is changed. The possible first connection state is shown. FIG. 8 is a plan view of the connecting portions 30 and 40 and the connecting rod 100 in the first connected state.

As shown in FIG. 8, the first insertion portion 101 of the connecting rod 100 is inserted into the first hole 31 of the first carrier vehicle 10. By inserting the second insertion portion 102 of the connecting rod 100 into the hole end portion 41A of the second hole 41 of the second carriage 10, the first connected state is formed.

According to the first connection state, a constant space is formed between the first connection part 30 of the first carrier vehicle 10 and the second connection part 40 of the second carrier vehicle 10. .. The connecting rod 100 is sandwiched between the pair of walls 42 of the second connecting portion 40. The second insertion portion 102 of the connecting rod 100 is hooked on the receiving portion 44 (see FIG. 2) of the second connecting portion 40.

When the rows of the carriages 10 travel so that the first carriage 10 precedes, the relative rotation between the trailing second carriage 10 and the connecting rod 100 is caused by the second connecting portion 40. Regulated. Therefore, the portion connecting the first carriage 10 and the connecting rod 100 does not cause a swing in the traveling direction of the second carriage 10 that follows. For this reason, when the row of the carriages 10 travels, the second carriage 10 is less likely to meander and can travel while maintaining a stable posture. When the row of the carriages 10 travels so that the second carriage 10 precedes, the relative rotation between the preceding second carriage 10 and the connecting rod 100 causes the second connecting portion 40 to rotate. Regulated by For this reason, the portion connecting the second carriage 10 and the connecting rod 100 does not cause a swing in the traveling direction of the trailing first carriage 10. Therefore, when the row of the carriages 10 travels, the first carriage 10 is less likely to meander and can travel while maintaining a stable posture.

FIG. 9 shows that the first carriage 10 and the second carriage 10 are connected by the connecting rod 100 to form a row of the carriages 10, and the first carriage 10 has a first row. The 1st side surface 20C and the 2nd side surface 20D of the 2nd carriage 10 have shown the 2nd connection state which contacted. FIG. 10 is a plan view of the connecting portions 30 and 40 and the connecting rod 100 in the second connected state.

When a force is applied to the rows of the carriages 10 so that the carriages 10 approach each other in the first connected state, the second insertion portion 102 of the connecting rod 100 is removed from the hole end portion 41A of the second hole 41 from the hole end portion 41A. The length of the connecting rod 100 that moves to the other end side of the second hole 41 and protrudes from the second side surface 20D of the second carriage 10 becomes shorter. Then, the first side surface 20C of the first carrier vehicle 10 and the second side surface 20D of the second carrier vehicle 10 come into contact with each other to form the second connected state. According to the second connected state, the length of the rows of the carriages 10 in the front-rear direction is shorter than that in the first connected state, so that the area required to store the rows of the carriages 10 becomes narrow. Note that, here, the state where the two carriages 10 are connected by the connecting rod 100 is illustrated, but the third and subsequent carriages 10 can be further connected by the connecting rod 100. Also in this case, the same effect as the above-mentioned effect can be obtained.

(Second embodiment)
The carriage 10 of the second embodiment differs from the carriage 10 of the first embodiment in the following points, and has substantially the same configuration as the carriage 10 of the first embodiment in other points. ..

FIG. 11 is a plan view of the connecting portions 30 and 40 and the connecting rod 100 in the row of the carriage 10 of the second embodiment. The first connecting portion 30 includes a pair of walls 32 facing each other so that the connecting rod 100 can be sandwiched. The pair of walls 32 are formed so as to project from the upper surface 30A of the first connecting portion 30 and to be able to sandwich the rod body 103 of the connecting rod 100. The material of the pair of walls 32 can be arbitrarily changed. For example, the pair of walls 32 are made of resin and metal. Further, the configuration of the pair of walls 32 can be arbitrarily changed. For example, the pair of walls 32 may be integrally formed with the first connecting portion 30 or may be detachable from the first connecting portion 30. The pair of walls 32 may be ribs as long as the connecting rod 100 can be sandwiched between them and movement thereof can be regulated.

A gap 33 into which the rod body 103 of the connecting rod 100 can be inserted is formed between the pair of walls 32 and the first side face 20C. The upper surface 40A of the second connecting portion 40 is formed at a position lower than the deck surface 20A. A second hole 41 having a circular shape is formed in the second connecting portion 40.

The first insertion portion 101 of the connecting rod 100 is inserted into the first hole 31 of the first carriage 10 and the second insertion portion 102 of the connecting rod 100 is formed into the second hole of the second carriage 10. The first connected state is formed by being inserted into the hole 41. The connecting rod 100 is sandwiched between the pair of walls 32 of the first connecting portion 30. Therefore, the relative rotation between the first carrier 10 and the connecting rod 100 is restricted, and the same effect as that obtained by the first embodiment is obtained.

Further, the first carrier truck 10 of the second embodiment can store the connecting rod 100 in the luggage carrier 20 by the following procedure. First, in the first connected state, the second insertion portion 102 of the connecting rod 100 is pulled out from the second hole 41 of the second carriage 10. Next, the connecting rod 100 is moved with respect to the first carriage 10 so that the rod body 103 of the connecting rod 100 is located above the pair of walls 32. Next, the connecting rod 100 is rotated with respect to the luggage carrier 20 so that the rod body 103 is located on the gap 33. Next, the connecting rod 100 is pushed down so that the rod body 103 is fitted in the gap 33. Thereby, the connecting rod 100 is housed in the luggage carrier 20 so as not to project from the first side surface 20C of the luggage carrier 20.

(Third Embodiment)
The carriage 10 of the third embodiment is different from the carriage 10 of the first embodiment in the following points, and has substantially the same configuration as the carriage 10 of the first embodiment in other points. ..

FIG. 12 is a plan view of the connecting portions 30 and 40 and the connecting rod 100 in the row of the carriage 10 of the third embodiment. The upper surface 30A of the first connecting portion 30 constitutes the same plane as the deck surface 20A. The second connecting portion 40 includes a partitioning protrusion 41D that partitions the second hole 41 into a first region 41B and a second region 41C. The partitioning protrusion 41D projects from the inner wall of the second hole 41. The first region 41B is a region including the hole end portion 41A of the second hole 41. The second region 41C is a region including the end portion of the second hole 41 on the center side in the front-rear direction of the luggage carrier 20. As an example, the length of the first region 41B in the front-rear direction of the platform 20 is longer than the length of the second region 41C.

The first insertion portion 101 of the connecting rod 100 is inserted into the first hole 31 of the first carriage 10 and the second insertion portion 102 of the connecting rod 100 is formed into the second hole of the second carriage 10. The first connected state is formed by being inserted into the hole 41.

FIG. 13 shows a cross section of the first insertion portion 101 of the connecting rod 100 inserted into the first hole 31. The cross-sectional shape of the first insertion portion 101 of the connecting rod 100 is defined by a first portion 101A and a second portion 101B that are straight lines, and a first arc portion 101C and a second arc portion 101D that are arcs. ing. The cross-sectional shapes of the second insertion portion 102 and the rod body 103 of the connecting rod 100 are similar to the cross-sectional shape of the first insertion portion 101.

The first portion 101A and the second portion 101B are parallel to each other. The first arc portion 101C connects one end of the first portion 101A and one end of the second portion 101B. The second arc portion 101D connects the other end portion of the first portion 101A and the other end portion of the second portion 101B. Each of the circular arc portions 101C and 101D is formed so as to follow the shape of the surface of the loading platform 20 that defines the first hole 31. Therefore, when the first insertion portion 101 is inserted into the first hole 31, the entire arcuate portions 101C and 101D are in contact with the surfaces defining the first hole 31, respectively.

FIG. 14 shows a cross section of the second insertion portion 102 of the connecting rod 100 inserted into the second hole 41. The first portion 102A and the second portion 102B are in contact with each other along the first surface 27 and the second surface 28 of the luggage carrier 20 that define the second hole 41, respectively. Therefore, the relative rotation between the second carrier 10 and the connecting rod 100 is restricted, and the same effect as that obtained by the first embodiment is obtained. Note that the first surface 27 and the second surface 28 do not have to be parallel to each other in the plan view of the deck surface 20A. Further, the cross section of the second insertion portion 102 is not limited to the triangle. For example, it may be a quadrangle, a hexagon, or a polygon whose rotation relative to the connecting rod 100 can be restricted.

(Modification)
The description of each of the above embodiments is merely an example of a form that the carriage and the connecting rod according to the present invention can take, and is not intended to limit the form. The carriage and the connecting rod according to the present invention can take a form in which, for example, a modified example of each of the above-described embodiments described below and at least two modified examples that are not mutually contradictory are combined.

-In 3rd Embodiment, the shape of the cross section of each hole 31, 41 and the connecting rod 100 can be changed arbitrarily. In one example, the cargo bed 20 is formed with the second hole 41 shown in FIG. The second insertion portion 102 of the connecting rod 100 has the cross-sectional shape shown in FIG. The shape of the second hole 41 in the plan view of the deck surface 20A is such that the distance between the first surface 27 and the second surface 28 becomes narrower from the center side of the luggage carrier 20 toward the end side in the front-back direction of the luggage carrier 20. It is a shape. The cross section of the second insertion portion 102 is triangular. The first portion 102A, which is the first side of the triangle, extends along the first surface 27. The second portion 102B, which is the apex defined by two sides other than the first portion 102A, contacts the second surface 28.

-The sectional shape of the second insertion portion 102 shown in FIG. 15 can be further changed. A recessed portion that is recessed toward the second portion 102B is provided in the middle portion of the first portion 102A. The recess is a portion that does not come into contact with the first surface 27.

-The configuration of the wheel restriction unit 26 can be arbitrarily changed. In one example, the wheel restraint unit 26 includes a pair of restraint walls that project upward from the deck surface 20A of the luggage carrier 20. The pair of restriction walls are provided on the deck surface 20A so as to be able to come into contact with the inner parts of the wheels 11 of the other carriage 10. For this reason, when another carrier 10 is placed on the carrier 20 of the carrier 10, the pair of wheels 11 of the other carrier 10 respectively come into contact with the restriction wall, and the rotation of the wheel 11 is restricted by the restriction wall. It

The configuration of the pair of restriction walls of the wheel restriction unit 26 can be further changed. The pair of restricting walls of the wheel restricting portion 26 may be formed integrally with the pair of walls 42 of the second connecting portion 40.
The shape of the connecting rod 100 can be changed arbitrarily. In one example, the connecting rod 100 is H-shaped. In another example, the connecting rod 100 is L-shaped. When the connecting rod 100 is L-shaped, one end thereof is inserted into the second hole 41 provided on the second side surface 20D of the luggage carrier 20. The wall defining the second hole 41 has a function of restricting the movement of the connecting rod 100.

DESCRIPTION OF SYMBOLS 10... Transport vehicle, 11... Wheel, 20... Luggage, 20A... Deck surface, 26... Wheel control part, 27... 1st surface, 28... 2nd surface, 30... 1st connection part, 31... 1st , 32... Wall, 40... Second connecting portion, 41... Second hole, 42... Wall, 43... Covering portion, 100... Connecting rod, 101... First insertion portion, 101A... First portion , 101B... second part, 101C... first arc part, 101D... second arc part, 102... second insertion part, 102A... first part, 102B... second part, 102C... first Arc portion, 102D... second arc portion, Z... axis.

Claims (6)

A luggage carrier having a deck surface on which luggage is loaded,
A hole is formed in the loading platform, into which an insertion portion provided in a connecting rod that connects the carriages to each other is formed, and the connecting rod and the carriage that have the inserting portion inserted into the hole form the deck surface. and a connecting portion about an axis of along the normal contact with the connecting rod so as not to relatively rotate,
The hole is a long hole extending in the front-rear direction of the platform,
The loading platform has at least transport carriage Ru provided with a covering portion covering a portion of the hole from the deck surface. A luggage carrier having a deck surface on which luggage is loaded,
A hole is formed in the loading platform, into which an insertion portion provided in a connecting rod that connects the carriages to each other is formed, and the connecting rod and the carriage that have the inserting portion inserted into the hole form the deck surface. A connecting portion that comes into contact with the connecting rod so as not to rotate relatively about an axis along the normal line of
The connecting portion has a first connecting portion formed at one end portion in the front-rear direction of the luggage carrier and a second connecting portion formed at the other end portion in the front-rear direction of the luggage carrier,
The upper surface of the first connecting portion is set lower than the deck surface,
The first connecting portion has a pair of walls facing each other so that the connecting rod can be sandwiched, and the walls project from the upper surface,
The connecting rod has a first inserting portion inserted into a hole formed in the first connecting portion, a second inserting portion inserted into a hole formed in the second connecting portion, and the first inserting portion. And a rod body formed between the second insertion portion and the second insertion portion,
A gap into which the rod body can be inserted is formed between the wall and the side surface of the luggage carrier,
The carriage formed such that the width of the hole formed in the second connecting portion becomes narrower from the center side to the end side of the cargo bed in the front-rear direction of the cargo bed . The cargo bed includes at least a pair of wheel restricting portions on which wheels of another carrier can be arranged.
The carrier according to claim 1 or 2, wherein an end portion of the wheel restricting portion provided at an end portion in the front-rear direction of the luggage carrier is cut out. A connecting rod of a carriage for connecting at least two carriages each having a deck having a deck surface on which luggage is loaded,
The connecting rod includes an insertion portion that is inserted into a hole formed in the luggage carrier,
The cross-sectional shape of the insertion portion orthogonal to the axis of the insertion portion is such that the connecting rod in which the insertion portion is inserted into the hole and the carriage are relatively rotated around an axis along a normal line of the deck surface. A connecting rod for a carriage that has a shape that can be regulated. The hole is a long hole extending in the front-rear direction of the platform,
The luggage carrier is a surface extending in the front-rear direction of the carrier so as to define the hole, and includes a first surface and a second surface facing each other through the hole,
A cross-sectional shape of the insertion portion extends along the first surface, and a first portion that is in contact with the first surface, and a second portion that is at least partially in contact with the second surface. The connecting rod of the carrier according to claim 4, including. The hole provided in one of the at least two carriages is the elongated hole, and the hole provided in the other carriage is circular.
The first surface and the second surface are surfaces parallel to the front-rear direction of the carriage,
The second portion extends along the second surface and is in contact with the second surface,
A cross-sectional shape of the insertion portion connects one end of the first portion and one end of the second portion, and is a first shape that follows the shape of the hole provided in the other carriage. A circular arc portion and a second circular arc portion which connects the other end portion of the first portion and the other end portion of the second portion and which follows the shape of the hole provided in the other carriage. A connecting rod for the carrier according to claim 5.

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