JPH0418937Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a portable and collapsible transport vehicle.

BACKGROUND TECHNOLOGY For example, as shown in Japanese Patent Application Laid-Open No. 61-50871, conventionally, in this type of transport vehicle, a plurality of pairs of pipes fixed to a handle are connected and combined in a telescopic manner.

Wheels are installed at the lower ends of these pipes, and when loading cargo, the cargo is placed in a horizontal position.
When the carrier is not in use, the loading platform is pivoted to a fixed shaft so that it can be raised freely so that the loading platform collapses toward the pipe and becomes vertical.

Each of the pair of telescopic pipes fixed to the handle is extended by pulling the handle when in use, and contracted by pushing the handle when stored.

When each pipe is extended, the pipes are pressed against each other and fixed by connecting at the small diameter portion at the connecting portion of each pipe, or the pipes are fixed at the connecting portion by a spring-biased engager. This prevents each pipe from sliding.

Problems to be solved by the present invention In order to maintain the extended state of each pipe fixed to the handle, the pipes are fixed by pressure contact or an engager at the connecting part, but the pipes are fixed by external force such as impact or vibration. There is a drawback that transportation is difficult because the means easily comes off.

Therefore, the purpose of this invention is to provide a transport vehicle that is easy to use and can be transported smoothly even when shocks and vibrations occur.

Means for Solving the Problems A transport vehicle according to this invention includes a pair of pipe bodies connected to each other by handles and each having a plurality of pipes extendable and retractable, and a pair of pipe bodies installed between these pipe bodies; The connecting rod has one end fixed to one of the rotatable pipes of the pipe body, and a fixing piece provided at the other end of the connecting rod and having a first recess and a second recess.

When the connecting rod is rotated, the first
The recess and the second recess are selectively fitted into the other pipe body. The second recess is formed outside the first recess, and when the first recess is fitted into the other pipe body,
The pair of pipe bodies are maintained at a predetermined interval, and each pipe body can be expanded and contracted. Further, when the second recess is fitted into the other pipe body, the pair of pipe bodies bends inward, and expansion and contraction of each pipe body is prevented.

Function When the first recess of the fixing piece is fitted into the other pipe body, the pair of pipe bodies are maintained at a predetermined interval, and each pipe body can expand and contract. Further, when the second recess of the fixed piece is fitted into the other pipe body, the opposing pipe bodies are drawn together, the distance between the pair of pipe bodies becomes narrower, and expansion and contraction of each pipe body is prevented. In this way, by rotating the fixed piece, expansion and contraction of the pipe body can be easily and reliably controlled.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the transport vehicle A according to the present invention has three pipes 2, 3, 4 and 2a, 3a, 4
It has a pair of pipe bodies constituted by a, and is connected to both ends of the handle 1. For example, JP-A-61-
As shown in Japanese Patent No. 50871, the internal mechanism of the connecting portion 5 is pressed in a known manner.

Further, an axle 6 is fixed to the ends of the lower pipes 4, 4a, and wheels 7 are provided at both ends of the axle 6. Both ends of the frame 8 of the loading platform B are rotatably pivoted to fixed shafts 10 provided on brackets 9 fixed to the pipes 4, 4a, and can be raised and lowered.

The support rod 11 that supports the cargo platform B is the cargo holding frame 1
2 prevents the cargo placed on the loading platform B from falling off.

As shown in FIGS. 2 and 3, a connecting rod 13 made of synthetic resin is provided between the pair of pipes 2 and 2a, and one end 13 of the connecting rod 13 is attached to the rotatable pipe 2.
a is fixed, and the connecting rod 13 is rotatably attached to the pipe 2 in the circumferential direction.

Further, the other end forms a fixed piece 13b that extends and bends inward. This fixed piece 13b is formed with a first recess 13c and a second recess 13d that can be selectively fitted into the pipe 2a. First recess 13c
When fitted to the pipe 2a, the distance l between the pipes 2 and 2a is maintained. Further, the second recess 13d is configured such that when the second recess 13d is fitted into the pipe 2a, the distance l between the pipe 2 and the pipe 2a becomes narrower.
It is formed inside the first recess 13c.

As shown in FIG. 2, when the pipe 2a is located in the first recess 13c of the fixed piece 13b and are fitted, the distance l between the pipe 2 and the pipe 2a is maintained;
The pipes 2, 2a and 3, 3a are expandable and retractable.

When using the transport vehicle A, from the state where the pipe 2a is fitted into the first recess 13c of the fixed piece 13b, pull the handle 1 to release each pipe 2, 3, 2a, 3a.
Stretch. Subsequently, the connecting rod 13 is rotated to fit the second recess 13d of the fixed piece 13b into the pipe 2a.

As shown in FIG. 3, by fitting the second recess 13d of the fixed piece 13b into the pipe 2a, the distance l between the pipes 2 and 2a is drawn and narrowed, and the pipes 2, 3, 4, Since the pipes 2a, 3a, and 4a are slightly bent and deformed inwardly, each pipe 2, 2a is prevented from expanding or contracting due to this deformed state. Reference numeral 14 denotes a long hole into which a finger is inserted when carrying the carrier A.

Effects of the invention As described above, in this invention, the handle is pulled from the state where the other pipe body is fitted into the first recess of the fixing piece, each pipe body is extended, and then the connecting rod is rotated to fix it. The second recess of the piece is fitted into the other pipe body. By this operation, each pipe body is slightly deformed and expansion and contraction of each pipe body is prevented, so that it is possible to obtain an easy-to-use transport vehicle that can be smoothly transported even when shocks and vibrations occur.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a transport vehicle showing an embodiment of the present invention, Fig. 2 is a partial perspective view showing the state in which the first recess is fitted into the other pipe body, and Fig. 3 is a perspective view of the transport vehicle showing the embodiment of the present invention. It is a partial perspective view which shows the state where the 2nd recessed part was fitted. A... Transport vehicle, B... Loading platform, 1... Handle, 2,
2a, 3, 3a, 4, 4a...pipe, 5...connecting part, 13...connecting rod, 13b...fixing piece, 1
3c...first recess, 13d...second recess.

Claims (1)

[Claims for Utility Model Registration] A pair of pipe bodies connected to each other by handles and each having a plurality of pipes extendable and retractable, and a rotatable pipe of one pipe body installed between these pipe bodies. A connecting rod having one end fixed to the connecting rod, and a first recess and a second recess provided at the other end of the connecting rod.
a fixing piece having a recess, the second recess is formed inside the first recess, and when the connecting rod is rotated, the first recess and the second recess are selectively fitted into the other pipe body; When the first recess is fitted into the other pipe body, the pair of pipe bodies are maintained at a predetermined interval and each pipe body can expand and contract, and when the second recess is fitted into the other pipe body, A transport vehicle characterized in that a pair of pipe bodies are bent inward to prevent expansion and contraction of each pipe body.