JP2000198451A - Caster used both for snow-covered road and no-snow road - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily travel on both a snow-covered road and a no-snow road by fitting a support member with a snow surface skid member provided with a skid face, so as to be positioned around a wheel and upper side than the lower end of the wheel. SOLUTION: A support member 30 is fitted to be horizontally rotatable at the lower part of a cargo carrying platform fixture and constituted to freely change the direction of a wheel 10 according to the proceeding direction of a load carrying platform. The support member 30 is fitted with a snow surface skid member 40 around the wheel 10 so as not to come in contact with the wheel 10. The snow surface skid member 40 has a bottom face part 50 formed to skid on the snow surface, and the bottom face part 50 is made a skid face 50. The skid face 50 is formed in a protrusive expanded curved face so as to easily skid on the snow surface, and in this case, formed in nearly spherical shape so as to form a circular periphery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caster mounted under a carrier for alternately entering a snowy road and a non-snowy road. , A wheelchair, a baby carriage and the like.

[0002]

2. Description of the Related Art Conventionally, various types of casters mounted on a cargo bed have been proposed. One of the commonly used wheels is a wheel rotatably mounted on a support member as shown in FIG. , Which is attached to the lower part of the loading platform, and moves the loading platform by rotating the wheels while keeping the height of the loading platform substantially constant.

[0003]

Such a conventional caster is designed for use on non-snow roads. Therefore, for example, the place to go in and out of a building in snowy country, that is, snow road,
Cargo beds used on both non-snow roads, such as shopping carts used both inside and outside the supermarket and trolleys used inside and outside factories, etc. If so, there is no problem.

[0004] However, when used on a snowy road outside a building, the conventional casters can completely fulfill their role as casters because the wheels are buried in the snow and the wheels cannot rotate at all. Did not.

Therefore, the present invention makes it possible to easily drive on both snowy roads and non-snowy roads simply by replacing the conventional casters with the casters of the present invention without making any changes to the carrier itself. The caster which can be provided is provided with a simple structure.

[0006]

In order to solve the above-mentioned problems, the means according to the first aspect of the present invention includes a "wheel 10 and a support for rotatably supporting the wheel 10". In the caster provided with the member 30, the running surface 50
A snowy road and a non-snow surface are attached to the support member 30 so as to be located around the wheel 10 and above the lower end portion 15 of the wheel. Road combined caster 100. ”As its gist.

That is, a snow surface sliding member 40 having a sliding surface 50 for sliding on a snow surface is mounted around the wheel 10 of the caster 100. Therefore, only by replacing the conventional casters with the casters according to the present invention, when the carrier 20 travels on a normal non-snow surface road, it can travel by using the rotation of the wheels 10, and once on the snow surface road. After entering, the sliding surface 50 of the snow surface sliding member 40 attached to the periphery of the wheel 10 allows the vehicle to slide on the snow surface and run.

Further, the means adopted by the invention described in claim 2 is "a caster for snowy roads and non-snowy roads according to claim 1, wherein the sliding surface 50 is formed to be substantially spherical." Is the gist.

That is, the caster 10 according to claim 1
By forming the sliding surface 50 of the zero snow surface sliding member 40 into a substantially spherical surface, the outer peripheral portion is located above the central portion, so that it is easy to ride on the snow surface, and the contact area on the snow surface is improved. To make it easier to glide.

Further, a means adopted by the invention according to claim 3 is that the snow sliding member 40 is rotatably supported on both sides of the wheel 10 so as to be rotatable in the rotation direction of the wheel 10. The feature of the invention is a caster 100 for snowy roads and non-snowy roads according to claim 1 or 2.

That is, the snow surface sliding member 40 is
In the case where there is a step between a snowy road and a non-snowy road, the snowy road can be slid on the snowy road by providing the turntable freely in the rotation direction of The caster 100 is easily lifted on the snow surface by lifting the front of the member 40 upward.

Further, the invention according to claim 4 is characterized in that the rotating member 60 is formed so that the rotating member 60 is rotatable along the side outer periphery of the snow surface sliding member 40. The present invention provides a caster 100 for snowy roads and non-snowy roads according to any one of claims 1 to 3.

That is, a member rotatable along the outer periphery of the side surface of the snow surface sliding member 40 is provided so as to surround the outer periphery. Thereby, for example, when the carrier 20 such as a cart or a shopping cart is nested, even if the outer peripheries of the plurality of casters 100 come into contact with each other and interfere with each other so that the wheels cannot be directed in the traveling direction, the wheels are kept in the rotating member 60. Since the certain snow surface sliding member 40 and the wheel 10 are rotatable, they can easily rotate in the traveling direction, and can easily push the carrier 20 even in a nested state.

Further, the means adopted by the invention according to claim 5 is that the snow-sliding member 40 having a sliding surface, the wheels 10 provided on the sliding surface, and the surroundings of the snow-sliding member 40. And a snow-sliding member pivot 70 having a large size. The snow-sliding member 40 is provided with a snow-sliding member pivot 70.
The wheel 10 is rotatably supported horizontally so that the wheel 10 is mounted on the sliding surface 50 of the snow surface sliding member 40 and the snow sliding member is positioned so that the sliding surface 50 is located above the lower end portion 15 of the wheel. 4
The feature of the present invention is a snow road and a non-snow road caster 100 which is pivotally supported at zero.

That is, the sliding surface 5 of the snow surface sliding member 40
Since the wheels 10 are directly attached to the wheels 0, it is possible to travel on both snowy roads and non-snowy roads with the wheels and the snow sliding member, as in the first aspect. At the same time, even when the plurality of casters 100 are in contact with each other when nesting, the snow surface sliding member support portion 70 having an outer periphery larger than the snow surface sliding member 40 comes into contact with the caster 100 and is provided at a lower portion thereof. Since the snow surface sliding member 40 is provided so as to be freely rotatable in a horizontal direction, the snow surface sliding member 40 can be easily rotated in the traveling direction of the wheel 10 below the snow surface sliding member support portion 70.

Further, the means adopted by the invention according to claim 6 is that a plurality of the wheels 10 are provided on the snow surface sliding member 40. The main feature is a road-caster.

That is, by mounting a plurality of wheels 10 on the lower surface of the snow surface sliding member, more stable traveling is enabled.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in FIGS. It should be noted that since the inventions described in claims 2 to 5 have different configurations added to the invention described in claim 1, one embodiment of the invention described in claim 5 will be described. Will replace the description of the invention as set forth in claims 1 to 4.

The caster 100 according to the present invention comprises a wheel 1
0, a supporting member 30 which supports the rotating shaft of the wheel 10 and is connected between the loading platform 20 and the wheel 10;
And a snow surface sliding member 40 having a sliding surface for sliding on a snow surface.

The wheel 10 is rotatably supported on a support member 30 about a center rotation axis of the wheel. Support member 30
Is provided with a mounting tool for mounting the carrier on the upper side, and is provided on the carrier 20 so as to be detachable. In addition, the support member 30 is rotatably mounted on the lower part of the carrier attachment so that the direction of the wheels 10 can be freely changed according to the traveling direction of the carrier 20.

A snow surface sliding member 40 is attached to the support member 30 so as not to contact the wheel 10 around the wheel 10. The snow surface sliding member 40 has a bottom surface 50 for sliding on the snow surface.
Becomes the running surface 50. The sliding surface 50 is formed as a convex and bulging curved surface so that the snow surface can be easily slid. In the embodiment, the shape is substantially spherical so that the periphery is formed to be circular. In the embodiment, the outer periphery of the snow sliding member 40 is formed in a circular shape, but is not particularly limited to a circular shape. For example, the sliding surface may be a polygon such as a triangle or a quadrangle, or an elliptical shape. As long as it has the surface 50, it can take various shapes.

The snow surface sliding member 40 is arranged so that the lower end portion 15 of the wheel is slightly below the sliding surface 50, that is, when the vehicle 10 travels on a non-snow surface road, it can run by rotating the wheel 10. For this purpose, the wheel 10 is mounted such that the sliding surface 50 is located slightly above a portion where the wheel 10 contacts the ground. Also in this case, if the sliding surface 50 is formed in a convex curved surface, the outer periphery of the snow surface sliding member 40 is located above the periphery of the wheel, so that the loading platform 20 is inclined and the wheel 10 is Even if it is slightly inclined, the outer periphery of the snow surface sliding member 40 does not contact the snow surface.

Furthermore, the snow surface sliding member 40 is provided on both sides of the wheel via the support member 30 in the direction of wheel rotation, that is,
The support member 30 is provided so as to be rotatable in the wheel traveling direction. Accordingly, when climbing to the snowy road when there is a step between the snowy road and the non-snowy road, the front of the snow surface sliding member 40 can be lifted upward on the snowy road, and the caster 100 is moved to the snow surface. Can easily get on. Further, even when the bed 20 is greatly inclined, a large impact can be avoided by lifting the case where the bed 20 comes into contact with the road.

Further, a rotating member 60 is attached to a lateral outer periphery of the snow surface sliding member 40.
It is mounted so that it can rotate along the lateral outer circumference. Therefore, even if the outer peripheral portion is fixed by an external force, the snow surface sliding member 40 inside is configured to be able to freely rotate inside.

Then, as shown in FIG. 2, the caster 100 includes a cart, a shopping cart, a wheelchair,
It is used by being attached to a carrier 20 such as. Hereinafter, the usage will be described in detail.

As shown in FIGS. 3 and 4, the casters 100 mounted on the loading platform 20 are used when traveling on a non-snow road such as a building or a road where snow melts, as shown in FIGS.
As in the case of a conventional caster, when a person presses the loading platform 20, the wheels 10 rotate and travel. Then, from the running state, when the vehicle enters the snow surface, the vehicle runs so as to slide on the snow surface by the sliding surface 50 of the snow surface sliding member 40 formed around the wheel 10. Of course, when traveling on a compacted snow surface, the vehicle can be run by rotating the wheels 10. In this way, the wheels 10 and the snow surface sliding member 40 allow the caster 100 to be used separately when traveling on a snowy road and when traveling on a non-snowy road.
With 0, both road surfaces can be run.

At this time, when the tip comes into contact with a step formed by snow when entering between a non-snow surface road and a snow surface road, as shown in FIG.
0 is provided so as to be rotatable in the traveling direction of the loading platform 20, so that the front of the snow surface sliding member 40 is rotated upward to avoid an impact due to contact and to easily climb over a step. On the other hand, when approaching from a snowy road to a non-snowy road, the rear side of the snow surface sliding member 40 comes into contact with the snow surface due to the steps as shown in FIG. be able to. Further, even when the leading end or the rear end of the snow surface sliding member 40 due to the inclination of the bed 20 comes into contact with a snowy road or a non-snow surface road, the front or rear of the snow surface sliding member 40 rotates upward. By doing so, the impact due to contact can be avoided.

Next, the effect of the rotating member 60 will be described. When many carts and shopping carts are transported for storage after using carts and shopping carts using the casters 100, the transport is performed in a nested state. The casters may collide with each other. In such a case, when the caster 100 having no rotating member 60 is used, the following problem occurs. Immediately after the nesting of the bogie or the like, the wheels 10 of all the casters 100 are not necessarily oriented in the traveling direction, that is, as shown in FIG.
In some cases, 0 points in a direction different from the traveling direction. In such a case, in the case of a conventional caster, the wheels 10 of the casters 100 could be directed in the traveling direction by pressing the carrier 20 without interfering between the casters 100 at the front and the casters 100 at the rear. . However, in the case of the caster 100 of the present invention, since the snow surface sliding member 40 is provided around the wheel 10, the snow surface sliding member 40 of the front caster 100 and the snow surface sliding member of the rear caster 100 are provided. 40 interfere with each other and hinder each other's rotation of the wheels 10 in the traveling direction.

Therefore, a rotating member 60 which can rotate along the outer periphery of the snow surface sliding member 40 is provided. As a result, even if the rotating member 60 is fixed while the casters 100 are in contact with each other, as shown in FIG. 8, the snow surface sliding member 40 and the wheel 10 inside the rotating member 60 rotate freely. To the direction of travel. This allows the wheels 10 to be automatically turned in the direction of travel by pushing the entire body in the nested state as it is, thereby enabling easy transport.

Next, the invention described in claim 5 or 6 will be described with reference to another embodiment shown in FIG. The caster 100 according to the present embodiment includes a snow surface sliding member 40, a snow surface sliding member support portion 70 disposed between the snow surface sliding member 40 and the loading platform 20, and playing a role of connecting each other; And a wheel 10 rotatably provided on the lower surface of the sliding member 40. The snow surface sliding member 40 has a convex substantially spherical sliding surface 50 as in the above embodiment. And
The snow surface sliding member 40 is mounted on a snow surface sliding member support portion 70 so as to be able to rotate horizontally.
On the other hand, the wheel 10 is rotatably provided on the snow surface sliding member 40, and is formed such that the lower end of the wheel 10 protrudes slightly downward from the sliding surface 50 of the snow surface sliding member 40. The number of wheels 10 at this time is not particularly limited, and may be any number. By attaching two or more wheels 10, the caster 100 can run more stably. In addition, the snow surface sliding member support portion 70 is formed to have a slightly larger outer circumference than the snow surface sliding member 40, and the snow surface sliding member 40 contacts even if the casters 100 contact each other when nesting. It is formed so that the snow surface sliding member support portions 70 may come into contact with each other. Then, the snow surface sliding member support portion 70 is fixed to the carrier and forms a cart, a shopping cart, and the like.

The caster 100 configured as described above
As in the first embodiment, the vehicle travels by rotating the wheel 10 on a non-snow road, and travels on a snow surface by sliding on the sliding surface 50 of the snow surface sliding member 40. As described above, in another embodiment, it is possible to run on both the snow swing road and the non-snow road. Also,
In another embodiment, when the casters 100 contact each other during nesting, the snow sliding member support portions 70 provided to be larger than the periphery of the snow sliding member 40 come into contact with each other, and the snow sliding member Since the snow surface sliding member 40 provided at the lower part of the support portion 70 is formed to be horizontally rotatable, the wheels 10 can be directed in the traveling direction by pressing the loading platform 20 as shown in FIG. . In this manner, even in another embodiment, even when the casters 100 are in contact with each other in a nested state, the cart or the like can be pressed without any problem.

[0032]

As described above, the caster according to the present invention, in the caster according to the first aspect, has a configuration having both a snow surface sliding member and wheels, so that a non-snow surface road and a snow surface road can be obtained. In each case, when the vehicle is to be driven on a normal non-snow road, the luggage carrier can be driven by the rotation of the wheel 10. It is possible to gliding on the snow surface and run on the snow surface by the gliding member attached to the periphery of the vehicle, and it is possible to travel on both road surfaces with one caster without performing any operation.

In the caster according to the second aspect, by making the sliding surface of the snow surface sliding member a spherical surface, the contact area with the snow surface can be reduced, so that the sliding becomes easier and the outer peripheral portion is made of snow. Since it is located above the surface contact portion, it is possible to prevent the outer periphery from coming into contact with the road when the cargo bed, that is, the wheel leans or runs on a stepped snow surface.

In the caster according to the third aspect, the snow surface turning member is rotatably provided in the wheel rotation direction, that is, rotatably provided in the traveling direction of the wheel, so that the snow surface road and the non-snow surface road are provided. When there is a step, it is easy to ride the wheels on a snowy road, and it is possible to avoid a large impact both when there is a large inclination and when it comes into contact with the road.

In the caster according to the fourth aspect of the present invention, a member rotatable along the outer periphery of the side surface of the snow surface sliding member is provided so as to surround the outer periphery. When the nesting is performed, even if the snow sliding members are in contact with each other, the snow sliding member and the wheels in the rotating member can be directed in the traveling direction, so that the bed in the nested state can be easily formed. Can be pressed.

In the caster according to the fifth aspect, the snow-sliding member is capable of traveling on both a snowy road and a non-snowy road, and the snow-sliding member itself is horizontally rotatable. By mounting the wheels on the sliding surface, even if the casters come into contact with each other, the wheels can freely rotate under the snow surface sliding member support portion, so that the wheels can be more easily turned in the traveling direction even when nesting.

In the caster according to the sixth aspect, the stability of the caster itself can be ensured by providing a plurality of wheels on the sliding surface of the snow surface sliding member.

[Brief description of the drawings]

FIG. 1 is a perspective view of a caster according to an embodiment of the present invention.

FIG. 2 is an overall perspective view when the caster according to the embodiment of the present invention is used for a carrier.

FIG. 3 is a side view showing a state where the caster according to the embodiment of the present invention is traveling on a non-snow road.

FIG. 4 is a side view showing a state where the caster according to the embodiment of the present invention is traveling on a snowy road.

FIG. 5 is a side view showing a state in which the caster according to the embodiment of the present invention crosses a step onto a snowy road.

FIG. 6 is a side view showing a state in which the caster according to the embodiment of the present invention gets down a step to a snowy road.

FIG. 7 is a plan view showing a state of the caster when a bed using a caster having no rotating member according to the embodiment of the present invention is nested.

FIG. 8 is a plan view showing a state of the caster when a bed using a caster having no rotating member according to the embodiment of the present invention is nested.

FIG. 9 is a perspective view of a caster according to another embodiment of the present invention.

FIG. 10 is a perspective view showing a state where a carrier using a caster according to another embodiment of the present invention is nested.

FIG. 11 is a perspective view showing a conventional caster.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wheel 15 Wheel lower end part 20 Load carrier main body 30 Support member 40 Snow surface sliding member 41 Wheel support part 42 Vehicle main body attaching part 50 Running surface 60 Rotating member 100 Caster 70 Snow surface sliding member supporting portion

Claims (6)

[Claims] 1. A caster comprising a wheel and a support member rotatably supporting the wheel, wherein a snow surface sliding member having a sliding surface is located around the wheel and above a lower end of the wheel. And a caster for both a snowy road and a non-snowy road. 2. The caster for snowy roads and non-snowy roads according to claim 1, wherein the sliding surface is formed as a substantially spherical surface. 3. The snowy road and the non-snow road according to claim 1, wherein the snow surface sliding member is rotatably supported on both sides of the wheel so as to be rotatable in the rotation direction of the wheel. Surface road combined caster. 4. The snow according to claim 1, wherein the rotating member is formed so as to be rotatable along a lateral outer periphery of the snow surface sliding member. Road and non-snow road casters. 5. A snow surface sliding member having a sliding surface, a wheel provided on the sliding surface, and a snow surface sliding member pivot portion having a periphery larger than the snow surface sliding member. The snow-sliding member is horizontally rotatably supported by a snow-sliding member pivot, and the wheel is mounted on the snow-sliding member's running surface and the running surface is above the lower end of the wheel. A caster for snowy roads and non-snowy roads, wherein the caster is supported by the snow sliding member so as to be located. 6. The caster according to claim 5, wherein a plurality of wheels are provided on the snow surface sliding member.