JP2008132854A - Stopper of transportation carriage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stopper of a transportation carriage in no need of adjustment even when a flat annular part in parallel with an axle on the periphery of a wheel is worn. <P>SOLUTION: One end of a pressing plate 11 is attached in the vicinity of the wheel 3 in the transportation carriage so that the pressing plate is rotatable in a direction contacting with/separating from the wheel. The pressing plate is regularly energized to the wheel direction by a spring 19. The other end of the pressing plate is connected to an operation lever via a wire 21. The pressing plate is pressed to the wheel by the force of the spring by the operation of the lever. In this stopper, the pressing plate is provided with an inclined surface 11c corresponding to the peripheral inclined part 3c of the wheel between the flat annular part 3a in parallel with the axle 5 in the periphery of the wheel and the side face 3b of the wheel, and the inclined surface of the pressing plate is pressed to the peripheral inclined part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a stopper for a transport cart, and relates to a transport cart stopper for locking wheels of a transport cart for transporting luggage and the like.

  Japanese Utility Model Publication No. 4-67172 discloses a wheel locking mechanism (stopper) in a carriage.

In the lock mechanism, a lock plate (stopper plate) disposed near a wheel via a spring is connected to a lever attached to a handle via a wire, and the lock plate is moved by rotating the lever. The outer wheel (the flat annular part parallel to the axle on the outer periphery of the wheel) is pressed to lock the wheel.
Japanese Utility Model Publication No. 4-67172

  In the conventional locking mechanism, the wheel is locked by pressing the lock plate against the flat annular portion of the wheel. The flat annular portion of the wheel is easily worn as the carriage is used. It is. When the flat annular portion of the wheel is worn, the positional relationship between the lock plate and the flat annular portion of the wheel changes, so that it is necessary to adjust the lock mechanism.

  The present invention has been made in order to solve the above-described problems in the conventional lock mechanism and to provide a stopper for a transport carriage that does not require adjustment even when the flat annular portion of the wheel is worn.

In order to solve the above-mentioned problems, the present invention provides the following stopper for a transport carriage.

(1) Attach one end of the pressing plate in the vicinity of the wheel in the carriage so that the pressing plate can rotate in the direction in which the pressing plate contacts and separates from the wheel, and the pressing plate is always urged in the wheel direction by a spring; In the stopper of the transport carriage, the other end of the pressing plate is connected to the operating rod via a wire, and the pressing plate is pressed against the wheel by the force of the spring by operating the operating rod.
The pressing plate includes an inclined surface corresponding to an outer peripheral inclined portion of the wheel between a flat annular portion parallel to the axle on the outer periphery of the wheel and a side surface of the wheel, and the inclined surface of the pressing plate is used as the outer peripheral inclined portion of the wheel. A carriage carriage stopper characterized in that the carriage carriage is pressed against the carriage (claim 1).

(2) The operating rod is provided with a grip bar, and the lower end of the operating rod is rotatably attached to a vertical arm that supports a horizontal handle in the transport cart via a rotation shaft. When the upper end of the wire is connected to the vicinity of the rotation shaft, the operation plate is rotated against the force of the spring and the grip bar is brought into contact with the handle so that the inclined surface of the pressing plate is a wheel. The inclined surface of the pressing plate is pressed against the outer peripheral inclined portion of the wheel by the force of the spring when the operating lever is released away from the outer peripheral inclined portion.

(3) The vertical arm is foldable (Claim 3).

  In the present application, the “outer peripheral inclined portion” and “inclined surface” include not only a flat inclined portion or inclined surface but also a curved inclined portion or inclined surface.

[Invention of Claim 1]
With the use of the carriage, the flat annular portion of the wheel is worn, but the outer peripheral inclined portion of the wheel between the flat annular portion of the wheel and the side surface of the wheel is not worn.

  Thus, the pressing plate has an inclined surface corresponding to the outer peripheral inclined portion of the wheel, and the inclined surface of the pressing plate is pressed against the outer peripheral inclined portion of the wheel, so that even when the flat annular portion of the wheel is worn, There is no effect on the function of the stopper, and it is not necessary to adjust the stopper.

  Since the outer peripheral inclined portion of the wheel has a large area, the wheel is reliably locked when the outer peripheral inclined portion is pressed against the inclined surface of the pressing plate.

[Invention of claim 2]
When gripping the grip bar and the handle while the grip bar of the operation rod is in contact with the handle and running the transport carriage, the inclined surface of the pressing plate is separated from the outer peripheral inclined portion of the wheel, and the stopper does not work. . When the hand is released from the operating rod, the inclined surface of the pressing plate is pressed against the outer peripheral inclined portion of the wheel by the force of the spring, and the wheel is locked. Therefore, the movement of the transport carriage when stopping is reliably prevented.

[Invention of claim 3]
By folding the vertical arm, the transport cart becomes compact, which is convenient for transporting and storing the transport cart. When the vertical arm is folded, the inclined surface of the pressing plate is pressed against the outer peripheral inclined portion of the wheel by the force of the spring, and the wheel is locked, thus ensuring safety.

  What is indicated by reference numeral 1 is a loading table. On the loading table 1, luggage and various other items are loaded as required by the user.

  As an example, four wheels 3, 3, 3, 3 are attached to the lower surface of the loading platform 1. What is indicated by reference numeral 5 is an axle of the wheel 3.

  As an example, two vertical arms 7 and 7 are erected on the upper surface of the loading table 1, and a horizontal handle 9 is supported on the upper ends of the vertical arms 7 and 7. See FIG.

  In the vicinity of the wheel 3, one end 11 a of the pressing plate 11 is attached so as to be rotatable in a direction in which the pressing plate 11 contacts and separates from the wheel 3. That is, as an example, the support plate 13 is fixed to the lower surface of the mounting table 1, the holding body 15 is fixed to the lower surface of the support plate 13, and the one end 11 a of the pressing plate 11 is connected to the holding body 15 via the rotation shaft 17. Is attached so that the pressing plate 11 is rotatable.

    The pressing plate 11 is always urged toward the wheel 3 by the spring 19.

  As an example, the spring 19 is disposed between the support plate 13 and the pressing plate 11 on the lower surface of the mounting table 1. The spring 19 is preferably a coil spring.

  The other end 11 b of the pressing plate 11 is connected to the operation rod 23 via the wire 21. The wire 21 has flexibility.

  By operating the operating rod 23, the pressing plate 11 is pressed against the wheel 3 by the force of the spring 19.

  Thus, in the present invention, the pressing plate 11 corresponds to the outer peripheral inclined portions 3c, 3c of the wheel 3 between the flat annular portion 3a parallel to the axle 5 on the outer periphery of the wheel 3 and the side surfaces 3b, 3b of the wheel 3. The inclined surfaces 11c, 11c are provided so that the inclined surfaces 11c, 11c of the pressing plate 11 are pressed against the outer peripheral inclined portions 3c, 3c of the wheel 3.

  The pressing plate 11 may be pressed against the outer peripheral inclined portions 3c and 3c of the wheel 3 as well as the flat annular portion 3a of the wheel 3 at the same time.

In the illustrated example, the operation bar 23 is provided with a grip bar 25.
As an example, the grip bar 25 is a substantially bowl-shaped body having a concave surface corresponding to the horizontal handle 9.

  A lower end 23a of the operating rod 23 is rotatably attached to a vertical arm 7 that supports a horizontal handle 9 in the transport cart via a rotary shaft 27.

  The upper end 21 a of the wire 21 is connected to the vicinity of the rotating shaft 27 at the lower end 23 a of the operating rod 23.

  The wire 21 passes through the mounting table 1 and the support plate 13, and the lower end 21 b of the wire 21 is attached to the pressing plate 11 via an adjustment screw 29.

  When the operating rod 23 is rotated against the force of the spring 19 and the grip bar 25 is brought into contact with the handle 9, the inclined surfaces 11c and 11c of the pressing plate 11 are the outer peripheral inclined portions 3c and 3c of the wheel 3. When the operating rod 23 is released, the inclined surfaces 11c and 11c of the pressing plate 11 are pressed against the outer peripheral inclined portions 3c and 3c of the wheel 3 by the force of the spring 19. See FIG.

  In the illustrated example, a stopper is provided for the pair of left and right rear wheels 3 and 3. The grip bar 25 connects a pair of left and right operating rods 23 to each other.

  The vertical arms 7 are foldable.

  That is, as an example, vertical arm supports 31, 31 are erected on the mounting table 1, and each vertical arm support 31 supports each vertical arm 7 to be rotatable in the front-rear direction via a rotation shaft 33. Yes.

It is a rear view which shows an example of the stopper of the conveyance trolley | bogie by this invention. It is sectional drawing which shows a part of stopper same as the above. It is a side view which shows a stopper same as the above. It is a side view which shows an example of a conveyance trolley. It is a rear view which shows a conveyance trolley same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform 3 Wheel 3a Flat annular part 3b Side surface 3c Peripheral inclined part 5 Axle 7 Vertical arm 9 Handle 11 Press plate 11a One end 11b Other end 11c Inclined surface 13 Support plate 15 Holding body 17 Rotating shaft 19 Spring 21 Wire 21a Upper end 21b Lower end 23 Operation rod 23a Lower end 25 Grip bar 27 Rotating shaft 29 Adjustment screw 31 Vertical arm support 33 Rotating shaft

Claims (3)

One end of the pressing plate is attached in the vicinity of the wheel in the carriage so that the pressing plate can freely rotate in the direction in which the pressing plate contacts and separates from the wheel, and the pressing plate is always urged in the wheel direction by a spring. In the stopper of the transport carriage that connects the other end to the operating rod through a wire and operates the operating rod to press the pressing plate against the wheel by the force of the spring.
The pressing plate includes an inclined surface corresponding to an outer peripheral inclined portion of the wheel between a flat annular portion parallel to the axle on the outer periphery of the wheel and a side surface of the wheel, and the inclined surface of the pressing plate is used as the outer peripheral inclined portion of the wheel. A stopper for a transport cart, characterized in that it is made to press.   The operating rod is provided with a grip bar, and the lower end of the operating rod is rotatably attached to a vertical arm that supports a horizontal handle in the transport cart via a rotating shaft, and the rotation at the lower end of the operating rod is provided. The upper end of the wire is connected to the vicinity of the shaft, and the inclined surface of the pressing plate is inclined to the outer circumference of the wheel when the grip bar is brought into contact with the handle by rotating the operating rod against the force of the spring. 2. The transport cart according to claim 1, wherein the inclined surface of the pressing plate is pressed against the outer peripheral inclined portion of the wheel by the force of the spring when the operating rod is released from the portion. stopper. The said vertical arm is foldable, The stopper of the conveyance trolley of Claim 2 characterized by the above-mentioned.

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