JP2007253767A - Work bench-cum-collapsible dolly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a work bench serving also as a collapsible dolly capable of enlarging and reducing a load carrying platform according to size of a load, easy to use, capable of minimizing a storage space when it is not used and easily transporting the dolly itself. <P>SOLUTION: This work bench-cum-collapsible dolly is constituted of a pair of flexible load carrying platform frames 1 formed in cross-section in a rectangular hollow cylindrical shape and having casters 2, a crosspiece 3 to suspend free to connect and separate these load carrying platform frames 1 to and from each other, a front frame 4, a rear frame 5 and an intermediate frame 8 free to be bolt-connected to each other, to be assembled in an optional shape flat type frame body in an assembled state and constituting the load carrying platform, a handle member 6 detachably fitted to the load carrying platform frame 1 and the rear frame 5, a top board 7 constituting a load carrying platform surface and a guide frame 9 detachably mounted on an end part of each of the frames and forming a leg part of the work bench. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a carriage used for various purposes, and more particularly, to an assembly cart that can be disassembled, can be expanded according to the size of the load, and can also be used as a work platform. It is.

  Conventionally, transport carts used in various operations include carts with four-wheel casters. By the way, in general, the loading platform of the transport cart has a dimension in the front-rear direction that is appropriate in consideration of operability with respect to a dimension in the width direction. However, when the load is a long object, a portion that protrudes out of the loading platform becomes long and unstable, and careful operation is required so as not to cause collapse of the load due to vibration during transportation.

  Therefore, for example, two laterally variable wheels are arranged in parallel on the lower surface of a rectangular cargo bed having a flat surface, and a fixed handrail portion for attaching a handle member along the front edge of the cargo bed is provided. A multi-purpose cart provided with handrail members that can be inserted / removed and expanded / contracted in the direction of extending the loading platform in a pipe whose base ends bent along the side edges are fixed to the lower surface of the loading platform (see Patent Document 1) .) Or the object to be transported is a long object, the telescopic operation handle is operated and the front base and the rear are moved according to the length of the long object via the pinion rack mechanism formed by the rack and the pinion. There have been proposed ones that extend between the base and adjust the length of the transport cart in the longitudinal direction (see Patent Document 2).

Japanese Patent Laid-Open No. 9-249132 JP-A-8-216890

  Thus, in addition to the poor operability due to the difference in the size of the load to be loaded as described above, the conventional transport cart not only requires a relatively large storage space when not in use, but also the cart itself. There is a problem that when transporting to a work site or the like, the loading platform space of the transport vehicle is largely occupied. In view of these problems of the prior art, the present invention can enlarge and reduce the loading platform according to the size of the load, is easy to use, and can carry the storage space when not in use and the carriage itself in a compact manner. An object of the present invention is to provide a worktable that can be used as an assembly cart.

  Accordingly, the assembly-type carriage combined work platform of the present invention includes a pair of loading platform frames that are formed in a hollow cylindrical shape and have a caster, and a bridge that spans these loading platform frames so that they can be connected and separated substantially in parallel. And a front frame and a rear frame which are assembled in a planar frame body having an arbitrary shape in an assembled state and constitute a loading platform, a handle rod which is detachably fitted to each frame, and a loading platform A first feature is that a top plate constituting the surface and a guide frame that is detachably attached to the end of each frame and serves as a leg of the work table are provided. A second feature is that the handle bar can be inserted into and removed from the cargo bed frame.

The present invention has the following excellent effects.
(1) Since it can be disassembled when not in use, the storage space is small, and it can be stored in the trunk of a passenger car and transported in a compact manner.
(2) When the load is a long object, operate the pair of load frame and extend between the front frame and the rear frame according to the length of the long object. Adjust to make it longer. As a result, the long object can be supported at both ends of the front and rear frames, and the distance between the front wheel and the rear wheel can be increased and transported stably.
(3) When the load is not a long object, the space between the front frame and the rear frame is reduced. The front and rear dimensions of the transport carriage are reduced, the distance between the front wheels and the rear wheels is also reduced, and a good workability such as a small turning is obtained.
(4) When a bulky load, for example, a circular tube or the like is transported in a stacked manner, it is sandwiched between guide frames erected at both ends of the front and rear frames, and is effective in preventing dropout without causing load collapse. Moreover, the direction of the handle bar can be changed to a preferred position in operation of the transport carriage.
(5) When the cargo exceeds the size of the carriage, such as a chiffon or a large veneer board, the handle can be stored in the load frame and used again. The cart can be moved.
(6) The guide frame becomes a leg and can be used as a work table.

Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.
FIG. 1 is a perspective view showing a state where a transport cart according to the present invention is assembled, FIG. 2 is an exploded perspective view of the transport cart according to the present invention, and FIG. 3 is a perspective view showing a state where the transport cart according to the present invention is extended, 4 is a plan view showing a state in which the handle member is housed in the loading frame, FIG. 5 is a perspective view showing a state in which the carriage is extended and the guide frame is erected, and FIG. 6 is a state in which the carriage is assembled on the work table. It is a perspective view.

  As shown in FIGS. 1 to 3, the assembly-type cart according to the present invention includes a pair of cargo bed frames 1, 1 formed in a hollow cylindrical shape having a rectangular cross section and having casters 2, and these cargo beds. A pier 3 that bridges the frames 1 and 1 so that they can be connected and separated substantially in parallel, and a front frame 4 and a rear frame that can be connected to each other by bolts and are assembled in a planar frame of an arbitrary shape in an assembled state. 5 and the intermediate frame 8, the handle frame 1 and the rear frame 5 are detachably fitted to the handle bar 6, the top plate 7 constituting the load carrier surface, and the detachable attachment to the end of each frame. And a guide frame 9 serving as leg portions.

  Hereinafter, in detail, the steel carrier frame 1 is housed in the outer cylinder frame 1a so that the inner cylinder frame 1b can be inserted and removed, and the loading frame 1 is configured to be stretchable by the insertion and removal operation. That is, bolt insertion holes 1c, 1c,... Are formed at predetermined intervals along the member longitudinal direction of the inner cylinder frame 1b, and an arbitrary expansion / contraction length is determined, and the outer cylinder frame 1a and the inner cylinder frame 1b are bolted. It is supposed to be fixed.

  The pair of cargo bed frames 1 and 1 are fitted and connected so that they can be connected and separated substantially in parallel across a steel pier 3, and further, a front frame 4, a rear frame 5 and an intermediate frame 8, and a receiving recess 1 d. And are assembled to a rectangular planar frame in an assembled state. That is, the carrier is assembled by the pier 3 horizontally placed between the carrier frames 1, 1, and the front frame 4, the rear frame 5, the intermediate frame 8, and the top plate 7 horizontally placed before and after the carrier frames 1, 1. .

  Then, the handle rod 6 in which the pipes are combined in a substantially U-shape is fitted into the handle insertion holes 10 and 10 formed in the rear frame 5 to stand and used as a transport carriage. That is, normally, a handle bar 6 as a traveling operation member is erected on the rear frame 5. Since the handle bar 6 is detachable and can be disassembled into a pair of pillars 6a whose upper end is bent and a straight tubular handrail 6b, it is convenient for storing and transporting the carriage itself. Further, as shown in FIG. 4, when the handle bar 6 is not used, the handle bar 6 can be inserted into the hollow portion of the loading frame 1 and stored. That is, it is convenient when the cargo exceeds the size of the carriage, such as a chiffon or a large veneer board. Further, after the transportation, the handle bar 6 can be erected again and moved. For this reason, conventionally, there is a risk that an operator has to bend and push his / her waist after using the cart or to move while holding the cart, but this risk can be eliminated. When the handle bar 6 is stored, the handle bar 6 is fitted into a recess 1d formed at the end of the loading frame 1, 1 so that the handle bar 6 does not pop out due to vibration during movement.

  Further, as shown in FIG. 5, the fitting position of the handle bar 6 can be changed by 90 degrees around the standing direction line, and the gripping part 6b can be changed in the vertical direction and the horizontal direction of the transport carriage. it can.

  As described above, according to the present invention, the left and right cargo bed frames 1 and 1 can both expand and contract in the direction in which the cargo bed expands and can be fixed at an arbitrary position, so that a flat cargo bed surface can be used more widely. For this reason, it is also possible to carry luggage that is larger than the cargo bed surface and that is slippery. Furthermore, the handle bar 6 can be removed, and in that case, a larger load can be loaded.

  The caster 2 is attached to the lower surface of the inner cylinder frame 1 b at the front end portion of the loading platform frame 1, and the rear wheel 18 is attached to the lower surface of the outer cylinder frame 1 a at the rear end portion of the loading platform frame 1. The caster 2 is preferably one that can change the direction of 360 degrees.

  As shown in FIG. 5, guide frame fitting cylinders 11 for erecting the guide frame 9 are provided at both ends of the cargo bed frame 1. Then, the front end portion of the guide frame 9 is fitted into the guide frame fitting cylinder 11, and the lip (stopper pieces) 9a and 9b provided around the upper portion of the guide frame 9 are engaged with the edge of the guide frame fitting cylinder 11. Stop and fix. By causing this guide frame 9 to stand upright on the four sides of the loading platform, it is possible to prevent the load from shifting or collapsing.

  Further, as shown in FIG. 6, by inserting the guide frame 9 from below the guide frame fitting cylinder 11, the guide frame 9 becomes a leg portion, and the carriage of the present invention can be used as a work table as shown in FIG. . In this case, when the lips 9a and 9b of the guide frame 9 are provided to be inclined, the leg portion is opened in a substantially C shape, and a stable work table is obtained with a substantially trapezoidal shape.

It is a perspective view which shows the state which assembled the transport trolley | bogie which concerns on this invention. It is a disassembled perspective view of the conveyance trolley | bogie which concerns on this invention. It is a perspective view which shows the state which extended the conveyance trolley | bogie which concerns on this invention. It is a top view which shows the state which accommodated the handle member in the loading platform frame. It is a perspective view which shows the state which extended the trolley | bogie and established the guide rail. It is a perspective view which shows the state which assembled the trolley | bogie to the workbench.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform frame 1a Outer cylinder frame 1b Inner cylinder frame 1c Bolt insertion hole 1d Recess for fitting handle 杆 2 Caster 3 Crossing 4 Front frame 5 Rear frame 6 Handle ridge 7 Top plate 8 Intermediate frame 9 Guide frame 9a Lip (stopper piece)
9b Lip (stopper piece)
10 Handle fitting hole 11 Guide frame fitting cylinder

Claims (2)

A pair of cargo bed frames formed in a hollow cylindrical shape and having a caster to be stretchable, a crosspiece that spans these cargo bed frames so that they can be connected and separated substantially in parallel, and can be bolted to each other and assembled. The front frame and the rear frame which are assembled into a planar frame body having an arbitrary shape and constitute the loading platform, the handle bar which is detachably fitted to each frame, the top plate which constitutes the loading platform surface, and the end of each frame An assembly-type cart / workbench comprising a guide frame that is detachably attached to the work frame and serves as a leg of the workbench. 2. The assembly-type cart combined work platform according to claim 1, wherein the handle bar is insertable / removable into / from the cargo bed frame.

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