JP3393791B2 - Transport trolley - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a carrier truck for carrying or carrying various kinds of luggage, and particularly when there is a step on a transfer surface such as a road surface or a floor surface, Concerning things that are convenient when getting off or going down.

[0002]

2. Description of the Related Art FIG . 3 is a perspective perspective view showing a conventional carrier truck. The carrier truck 30 has a substantially rectangular shape when viewed from the top, which has an appropriate height for loading luggage.
And a handle portion 32 standing upright on the rear side of the luggage carrier portion 31,
It is composed of wheels 33 attached to the four corners of the lower surface of the luggage carrier 31, and the handle portion 32 has a function of a backrest portion capable of supporting the rear side of the loaded luggage.
The handle portion 32 is normally formed so as to be rotated by a support portion 35 at the lower end portion thereof and to be folded on the upper surface of the luggage carrier portion 31.

[0003]

In the above-mentioned conventional carrier truck, there is no problem when carrying luggage on a carrying surface such as a flat road surface or floor surface, but if there is a step there, The current situation is that it is not possible to smoothly carry luggage. FIG. 4 is an explanatory view showing a state in which a conventional bogie is mounted on a step, in which (A) shows a state in which front wheels of the bogie are mounted on a step, and (B) further shifts the bogie forward. The bottom surface of the loading platform of the truck contacts the step. That is, during transportation, a step is encountered,
When riding it, a force is applied to tilt the handle portion 32 rearward to lift the front of the loading platform 31 and move it forward, and then the front wheel 33a is first climbed onto the step 40 (see FIG. )reference). When the truck is moved forward in this state, the lower surface of the loading platform 31 is changed to the corner 40 of the step 40.
Since it will come into contact with k (see FIG. 4 (B)), in order to avoid this, without loosening the force applied to the handle portion 32, that is, in the state where the force for tilting the handle portion 32 backward is applied. , Further pushing forward to bring the rear wheel 33b closer to the step 40, and then, while raising the grip portion 32 upward, further moving forward, so that the rear wheel 33b goes to the step 40.
It is possible to ride on the step 40 and ride on the step. When the truck is mounted on the step like this, a considerable amount of force is required from the beginning of the front wheels to the final rear wheels.

On the other hand, when getting off the step 40, the luggage on the luggage carrier 31 is pressed down and moved forward while applying force such that the handle 32 is tilted backward so as not to give an impact to the luggage. Gradually lower the front wheels 33a to land on the floor below, and further move forward while applying force to lift the handle 32 upward so that the lower surface of the loading platform 31 does not contact the step 40. The rear wheel 33b can be landed on the floor surface or the like below the step 40 while applying a force for lifting the handle portion 32 upward, and the dolly can be lowered onto the surface below the step. In this way, even when lowering from a step, considerable force is required from the beginning to the end.

Therefore, in the present invention, even if there is a step on the conveying surface as described above, it does not require much labor when riding on the step and when getting off the step, and it is extremely easy. The challenge is to provide a truck that can be easily transported. To be more specific, when riding on a step, it is only the first effort to ride the front wheels on the step, and when getting off the step, it is simply the last effort to lower the rear wheels to the lower transport surface. The challenge is to provide a carriage that can be transported. Further, in the present invention, even if there is a groove or the like on the conveying surface, it is also a problem that it can pass through the groove satisfactorily without any special effort.

[0006]

In order to solve the above-mentioned problems, the first aspect of the present invention is to provide at least a luggage carrier 1
1, a handle portion 12, and a pair of front wheels 13 each
And a rear wheel 14 and a sliding surface having a lower surface as a sliding surface
17 is the following regarding the carrier truck provided in the loading platform 11.
Is adopted. That is, the front wheel 13 and the rear vehicle
The wheel 14 is provided on the lower surface of the luggage carrier 11. the above
The sliding section 17 of the front wheel 1 is the lower surface of the loading platform 11.
3 and the rear wheel 14 are provided. Furthermore,
On the lower surface of the loading platform 11, inside the pair of rear wheels 14 or
A support member 18 is provided on the outside. Sliding part 17
Is fixed to the lower surface of the loading platform 11 and
Since the one end is supported by the support member 18,
The sliding surface of the sliding portion 17 is the inside of the pair of front wheels 13 or
It is inclined obliquely from the outside toward the rear side.

According to the present invention, when the vehicle encounters a step during transportation and gets on the step, the front wheels are simply put on the step, and then the grip portion is pushed forward as it is, so that the sliding surface on the lower surface of the sliding portion is removed. It will slide on the corners of the step, and it will move smoothly to the front without a large impact, and then the rear wheels will be able to easily climb on the step without a large impact. . Therefore, only the force is applied when the front wheels are first placed on the step, and the force for pulling the wheels upward is not required thereafter. On the other hand, even when getting off from the step, the trolley can be moved forward as it is, and the corner of the step can be moved from the front wheel to the sliding part and further from the sliding part to the rear wheel without receiving a large impact, Finally, when lowering the rear wheels onto the transport surface below the step, the step can be lowered by merely applying an upward force to the handle portion. In addition, when getting off the step, it is also possible to turn the truck backward and lower it from the rear. The step can be easily lowered only by the effort of lowering it on the transport surface below the step. Special
In addition, since the sliding part 17 is inclined, it gets over the step
At this time, it is possible to further reduce the inclination of the loading platform 11.
Wear.

[0008] The second is the present invention, in the first aspect, further provided with at least one pair of wheels 23 in the carrier unit at least before and after three rows of wheels in the carrier unit 11 13, 1
4, 23 are provided. According to the present invention, in addition to the above-described action, when there is a groove on the conveying surface, at least three rows of wheels in front and rear are provided when passing through the groove. When a pair of wheels is provided in the section, when the front wheel encounters the groove and approaches the groove, the intermediate wheel behind the rear wheel and the rear wheel support the platform. Therefore, the loading platform can be maintained in a horizontal state, and when the rear wheels approach the groove after that, the front wheels and the intermediate wheels reach the transport surface in front of the groove. After all, it is possible to carry the cargo bed in a horizontal state without any problem even if there is a groove while keeping the cargo bed in a horizontal state.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 illustrates an embodiment of the present invention. FIG. 1 is an explanatory diagram illustrating a state in which a carrier truck according to another embodiment of the present invention rides on a step, and (A) shows a state in which front wheels of the truck ride on the step, and (B) thereof. ) Indicates the state immediately before the rear wheels slide on the corner of the step and the rear wheels run on the corner of the step.

The trolley | bogie 25 consists of the cargo bed part 11, the handle part 12 standing upright from the rear side, the front wheel 13 and the rear wheel 14 provided in the lower surface of the cargo bed part 11, and the inside of the front wheel 13 is shown. The front end of the sliding portion 17 that is inclined obliquely from the vicinity toward the rear side is fixed to the lower surface of the loading platform, and the rear wheel 1
4, the rear end of the sliding section 17 is supported by a support member 18 provided on the lower surface of the cargo bed section inside 4. This gliding part 1
7 can also be formed by a round pipe or a square pipe, and one pipe can be bent to integrally form the sliding portion 17 and the support member 18 and fix the same to the lower surface of the cargo bed 11. You can also

When the carriage 25 according to this embodiment is mounted on the step 40, first, as shown in FIG.
The front wheel 13 of the carriage 25 is allowed to ride on the step 40 by applying a force that tilts the handle portion 12 rearward. After that,
By simply pushing the carriage 25 forward, the sliding surface of the lower surface of the sliding portion 17 comes into contact with the corner 40k of the step 40 and slides to reach the state shown in FIG. 1 (B) . By pushing, the rear wheel 14 can ride on the step 40 and the carriage 25 can ride on the step 40 without receiving a large impact. In the case of this dolly 25, since the gliding portion 17 is inclined, the inclination of the loading platform 11 can be further reduced when riding over the step 40.

On the other hand, when lowering the dolly 25 from the step 40, it is more convenient to lower the step 40 from the rear wheel 14 side in the backward direction, and it is more convenient to receive it from the rear wheel 14 without receiving a large impact. The sliding surface of 17 can be moved over the corner portion 40k of the step 40, and by moving to the rear as it is, the rear wheel 14 lands on the transport surface 41 under the step 40, and as shown in FIG. Then, the front wheels 13 can finally land on the lower transport surface 41 by applying a force to tilt the grip portion 12 rearward. In this way, the sliding portion 17 can be provided with a slant. Further, the sliding portion 17 can be formed by appropriately bending or bending, instead of being linear as described above.

FIG . 2 is a side perspective conceptual view showing a carrier 20 according to another embodiment of the present invention, and the bearing portion is not shown. In this transport carriage 20, even if the transport surface has a groove, it can pass through it without any problem. The carrier 20 includes a loading platform 11, a handle portion 12 standing upright on the rear side of the loading platform 11, front wheels 13 and rear wheels 14 provided on the lower surface of the loading platform 11, respectively, and these front wheels It has a sliding portion 17 provided at a portion between the wheel 13 and the rear wheel 14. This point is the same as in the first embodiment, but in this embodiment, a pair of wheels 23 is further provided in front of the front wheels 13. That is, in this embodiment, one pair of wheels is provided in three rows. Rear wheel 14
Needless to say, a pair of wheels may be provided behind the vehicle. Alternatively, the pair of wheels 23 is the front wheel 1
3 may be provided in the central portion between the rear wheel 14 and the rear wheel 14, and there may be three rows in the front and rear.

By providing the wheels 23, as shown in the drawing, even if there are grooves 45 on the transport surface 41, the carriage 2
0 can pass through this groove 45 without dropping the wheel into the groove and without any impact. That is, even if the wheel 23 reaches the groove 45 and is located above the groove 45, the rear front wheel 13 and the rear wheel 14 can still maintain the cargo bed 11 in the horizontal state, and the wheel 23 is in the groove. When the vehicle reaches the transport surface 41 after passing through 45, the front wheel 13 behind it is positioned above the groove 45, and the wheel carrier 23 and the rear wheel 14 also keep the cargo bed 11 in a horizontal state. Becomes Immediately before the rear wheel 14 reaches the groove 45, the user of the truck lifts the handle portion 12 upward,
It can be pushed forward and the rear wheels 14 can be moved past the groove 45. in this case,
If the front and rear of the wheel 23 and the front wheel 13 are separated from each other to some extent so that the cargo bed 11 is kept horizontal by the wheel 23 and the front wheel 13, it is not necessary to lift the handle 12 and the rear wheel 14 can pass above the groove 45.

In the conventional bogie, the front wheel and the rear wheel each had to apply a force upward twice to prevent the front wheel and the rear wheel from falling into the groove, but in the present invention, as described above, this groove is used. When passing 45, the user of the carriage can smoothly move the carriage forward by pushing it forward without making any difference from the normal flat conveying surface by the wheels arranged in three rows in front and rear. Can be done. It is also possible to further provide a pair of wheels behind the rear wheels 14 and arrange the wheels in the front and rear four rows. As described above, in the truck suitable for passing through the groove, for example, as in the above-described embodiment, the front wheel 13 is not used.
Further, a wheel 23 is provided in front of the front wheel 1, or the front wheel 1
The effect of the present invention can be exhibited by providing a pair of wheels at the center of the rear wheel 3 and the rear wheel 14, that is, by providing the wheels in at least three rows in the front and rear.

Although the embodiments have been described above, various design changes can be made in the present invention as follows. The shape and size of the loading platform and handle of the carrier,
The material and the like can be appropriately set. The handle part is
It may not be foldable on the luggage carrier. The handle portion may be provided not only to stand upright from the rear side of the cargo bed portion but also to be inclined obliquely upward. Furthermore,
The handle portion can be configured to be vertically expandable and contractible, and can be configured to be capable of being extended upwardly. This makes it possible to more easily incline the carriage rearward, when gripping the grip portion above the grip portion when applying a force that tilts the grip portion rearward. As a result, when the front wheels of the truck are placed on the step or lowered below the step,
It can be done more smoothly. The skid part may be located outside the line connecting the front and rear wheels. When the sliding portion is formed of a metal round pipe or a square pipe, a sliding member made of synthetic resin or the like may be added to the sliding surface on the lower surface thereof.

In addition to the pipe, the sliding portion may be a face plate material as described above, or may be made of a metal strip plate, and the wide portion of the strip plate is made vertical. It may be arranged, or the wide portion may be arranged downward. Further, although two sliding parts are provided on both sides in the above embodiment, the number of sliding parts is completely free, and may be three or more, or a large number may be arranged in a row .

When a pair of wheels are provided in three rows on the loading platform, a sliding portion may be provided continuously between the front row and last row wheels, but it goes without saying that the front wheel and the intermediate section are provided. You may arrange | position and provide a gliding part independently between the wheel of this, and between the wheel of an intermediate part, and a rear wheel, respectively. In addition, an auxiliary vehicle may be provided at the rear end of the loading platform of the truck, that is, on both sides of the intersection of the loading platform and the handle, so that when pulling the handle backward and riding on a step. The presence of this auxiliary vehicle is useful, that is, by tilting the handle backward, the auxiliary wheel comes into contact with the transport surface, and this inclined state can be easily maintained together with the rear wheels, and the cart can be easily moved forward. It can be made possible.

The wheels provided on the lower surface of the luggage carrier can be implemented without necessarily being provided on the lower surface of the luggage carrier, and by forming the luggage carrier with a frame member and attaching the wheels to the frame member as appropriate, Part of the above may be attached in a state of protruding upward from the upper surface of the luggage carrier, or may be attached to the outside of both side edges of the luggage carrier,
The mounting of the wheels on the carrier can be done quite freely. Further, in the front and rear wheels, the distance between the left and right wheels can be made different, and by making the widths of the wheels different, a narrow long groove like a child cage is formed on the conveyance surface in a plurality of rows in the traveling direction and the left and right direction. Even if there is a lid such as a side groove or drainage groove installed, even if one of the front and rear wheels is likely to fit in the long groove of these lids, the other wheel will not fit in it You can also do so. As described above, various design changes can be made in the present invention.

[0020]

The present invention has the following effects. In the first aspect of the invention of the present application, by providing the gliding portion, even if a horizontal conveyance surface encounters a step during transition,
It is extremely easy to get on and off the step. More specifically, since a gliding part is provided between the front wheels and the rear wheels, when a step is encountered, the front wheel is placed on the step and then the truck is pushed forward. Only with this, it is possible to move from the front wheel to the sliding part and from the sliding part to the rear wheel without a large impact, and to get on the step more smoothly. On the other hand, even when going down a step, just by pushing the cart forward, the wheels move from the front wheels to the gliding section and from the gliding section to the rear wheels, and finally the rear wheels are brought to the transport surface below the step. Only when landing, it is possible to descend the step more smoothly by applying a force such as pulling the grip portion upward. Alternatively, when going down a step, the trolley can be turned backwards and lowered from the side of the rear wheel, in which case the rear wheel is moved to the runway, and finally the front wheel is brought to the transport surface under the step. Only when landing, the front wheels can be landed on the lower transport surface by applying a force that tilts the grip portion backward. In this case, unlike the case of lowering from the front wheel side of the dolly as described above, there is no need for a force to pull up the last handle part upwards, and it is possible to lower the dolly to the surface below the step more smoothly. It becomes. Especially, the runway is inclined
Therefore, when overcoming the step, the inclination of the loading platform should be reduced.
It can be lost.

In the second aspect of the present invention, in addition to the effect of the first aspect of the invention, even if there are grooves or the like on the conveying surface, the wheels are provided on at least three rows in the front and rear on the lower surface of the loading platform. Therefore, even if a pair of wheels in it come over the groove,
The other two rows of wheels can keep the platform horizontal
The groove can be passed through more smoothly. As described above, the present invention has a simple structure and exerts a great effect.

[Brief description of drawings]

FIG. 1 is a plan view of a carrier truck according to an embodiment of the present invention .
It is explanatory drawing which shows the state which gets up, (A) is front
One wheel is on the step, and (B) is slippery.
The running surface of the running part comes into contact with the corners of the step and slides to the rear wheels.
Shows the state just before getting on the step.

FIG. 2 shows still another embodiment of the carriage according to the present invention .
It is the side surface conceptual diagram illustrated.

FIG. 3 is a perspective perspective view showing a conventional carrier truck.

FIG. 4 shows a state in which a conventional carrier truck is mounted on a step.
It is an explanatory view, and (A) is a front wheel riding on a step.
(B) shows a step on the lower surface of the loading platform of the truck.
It shows a state of being in contact with the corner portion of.

[Explanation of symbols]

10, 20, 25 ... Transport trolley, 11 ... Luggage part, 12 ... Grip part, 13 ... Front wheel, 14 ... Rear wheel, 17 ... Sliding part, 23 ... Wheel

Claims (2)

(57) [Claims] 1. At least a luggage carrier (11) and a handle (12)
And one pair of front wheels (13) and one rear wheel (14)
The sliding part (17) consisting of
In the carrier truck provided in 1), the front wheels (13) and the rear wheels (14) are located on the lower surface of the loading platform (11).
The sliding part (17) is provided on the lower surface of the loading platform (11) and
It is provided in a portion between the wheel (13) and the rear wheel (14) and is the lower surface of the cargo bed part (11), inside the pair of rear wheels (14) or
A support member (18) is provided on the outside, and the front end of the sliding part (17) is fixed to the lower surface of the cargo bed part (11),
The rear end of the part (17) is supported by the support member (18).
By the way, the sliding surface of the sliding part (17) is a pair of front wheels (13).
If you incline diagonally from the inside or outside of the
A carrier truck characterized by being. 2. At least one pair of wheels (23) is installed on the carrier section.
And at least three front and rear rows of wheels (13) (1
4) Conveyance according to claim 1, characterized in that (23) is provided.
Dolly.