JP3220842U - Step caster - Google Patents

Abstract

To provide a step-supporting caster capable of easily climbing a step with a simple structure without increasing the wheel diameter of a caster in a mobile device such as a transport cart or a care device. A pair of left and right assist plates 5 are rotatably connected to a fork 6 of a caster by a support shaft 2 and a connecting bolt 8. When the assist plate bottom 9 comes into contact with the step by pushing the support shaft of the assist plate forward, the assist plate is pivoted to raise the assist plate with the grounding portion as a fulcrum, and the load on the wheel 10 moves to the step side. At the same time, the assist plate is returned to the stopper 3 by the torsion spring 4 to maintain the initial position. This makes it easy to get over the step. [Selection] Figure 1

Description

  The present invention relates to a caster for level difference attached to a mobile device such as a transport cart or a care device.

  Conventionally, it has been necessary to lift a caster to pass through a step, and there has been a risk of a baggage falling. Therefore, as described in the following patent document, semi-circular arms for stepping over the step are mounted on both sides of the front wheel and the inside of the support bracket, and the semi-circular arm rotates and the top plate rotates by contacting the step. It has a structure that lifts over the steps.

  However, the above-described device needs to have a shape that avoids the main shaft in order to mount the semicircular arm on both sides of the front wheel and the inside of the support fitting. In order to prepare for the next step, it is desirable to hold the semicircular arm in place by a spring.

1998-297206

  This invention made it the subject that it was easy to get over a level | step difference, an obstruction, etc. using the force which pushes moving instruments, such as a conveyance trolley | bogie and nursing care equipment, forward.

  The purpose of the present invention is to press the support shaft of the assist plate forward compared to a caster with the same wheel diameter in a mobile device such as a transport cart or a nursing device, and when the assist plate bottom comes into contact with the step, the ground plate is used as a fulcrum. Providing casters for level differences that can easily get over level differences and obstacles by rotating to raise.

  In order to achieve the above object, the present invention comprises the following modes.

  The caster fork is provided with a pair of left and right assist plates and is connected by a support shaft and a connecting bolt. When the assist plate bottom is in contact with the step by pushing the support shaft of the assist plate forward, the support plate rotates with the grounding part as a fulcrum, and the assist plate bottom has a cushioning material or anti-slip shape. This makes it easier to get over the step and protect the step side.

  By pushing the support shaft forward, the assist plate rotates and the load on the wheel shifts to the step side. At the same time, the assist plate is returned to the stopper by the torsion spring and maintains the initial position.

  According to the present invention, there is provided a caster for level difference that can easily get over steps and obstacles compared to a caster having the same wheel diameter in a mobile device such as a transport cart or a care device.

  It is a name of a caster corresponding to a level difference of the present invention, and a front and side view.   Caster for level difference of the present invention and step diagram (state before overcoming the level difference)   The caster for level difference of this invention and the figure of level difference (the state where the wheel is lifted)   Caster for level difference of this invention and figure of level difference (state where wheel oversteps)   Caster for level difference of this invention and figure of level difference (wheel is in a state where level is lowered)

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a view showing the name and front / side view of the mechanism of the present invention. The caster fork (6) is provided with a pair of left and right assist plates (5) and is connected by a support shaft (2) and a connecting bolt (8). When the assist plate bottom portion (9) is in contact with the step, the support plate (2) of the assist plate moves forward to turn the assist plate (5) to turn to cause the assist plate (5) to rotate, and the wheel (10). At the same time when the load moves to the step side, the assist plate (5) is returned to the stopper (3) by the torsion spring (4) to maintain the initial position.

  FIG. 2 shows a state before the step corresponding caster gets over the step, and the assist plate (5) is in the initial position and the assist plate bottom (9) is in contact with the step.

  FIG. 3 shows a state in which the step corresponding caster gets over the step, and the assist plate bottom portion (9) comes into contact with the step and the assist plate support shaft (2) moves forward to raise the assist plate (5). And the wheel (10) is lifted up.

  FIG. 4 shows a state in which the step corresponding caster has overcome the step.

  FIG. 5 shows a state where the step corresponding caster descends from above the step.

  The caster for level differences of the present invention can be easily climbed over steps with a simple structure, so it is versatile in logistics, factories, medical facilities, etc. that require labor saving and quietness by shock absorption during delivery operations. High caster.

1 Top plate 2 Support shaft 3 Stopper 4 Torsion spring 5 Assist plate 6 Fork 7 Axle 8 Connecting bolt 9 Assist plate bottom 10 Wheel

Claims (2)

  The caster fork is provided with a pair of left and right assist plates and is connected by a support shaft and a connecting bolt. A step-supporting caster characterized in that, when the assist plate bottom is in contact with the step by pushing the support shaft of the assist plate forward, the support plate can be pivoted to raise the assist plate using the grounding portion as a fulcrum, and the step can be easily overcome.   By pushing the support shaft of the assist plate forward, the assist plate rotates to raise the assist plate, and the load load of the wheel moves to the step side. At the same time, the assist plate is returned to the stopper by the torsion spring and maintains the initial position. The step corresponding caster according to claim 1.

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