JP6497603B2 - Silver car - Google Patents

Description

  This invention is used smoothly and safely even in discontinuous passages when using a cart that is moved by pushing by hand, that is, a caregiver accompanying the elderly, a physically handicapped person, etc. It relates to a silver car with auxiliary wheels.

As shown in FIG. 8, a conventional general silver car 1 is a walking auxiliary vehicle used for walking and transporting goods when an elderly person or a physically handicapped person who can walk independently, and is mainly a shopping car. It is used as
This silver car 1 includes a seat portion 2, a basket bag body 3, and a handle 4, and a leg ring, that is, a caster, shows an example of having two front wheels 5 double casters and one rear wheel 6 single casters. .
In the case of a fixed wheel in which the caster does not rotate, the caster does not rotate. Therefore, the caster is used for turning the direction, and in the case of the free wheel in which the caster rotates, the caster rotates so that the direction can be easily changed.

  As a prior art patent technology, Patent Document 1 (Japanese Patent Application Laid-Open No. 11-115763) “handcart” has a front leg wheel and a rear leg wheel, and a buckle pivotally attached by a push rod and pivot means. A hand push called a silver car or a senior car that can be folded in both the front-rear direction and the width direction. A car is disclosed.

  Patent Document 2 (Japanese Patent Laid-Open No. 2005-118153) “Walk” has a front wheel having a structure that can be rotated back and forth around an arm rotation axis, and this front wheel is usually used as a front stopper by a spring. When the walker comes in contact with the step, it is pushed by the step and jumps up backwards so that it can cross the step without being caught, it has an auxiliary wheel at a high position in the front, due to unexpected movement of the front wheel It is disclosed that the user has no fear of falling.

Patent Document 3 (Japanese Patent Laid-Open No. 2012-115437) “A walker and a caster unit attached thereto” includes a pair of front legs and a pair of rear legs, and a caster unit attached to at least one leg. The caster unit is disclosed with a configuration including a pressing member attached to a leg, a wheel disposed below the pressing member, and an elastic member that expands and contracts in the vertical direction.

Japanese Patent Laid-Open No. 11-115763 JP-A-2005-118153 JP 2012-115437 A

    The silver car 1 shown in FIG. 8 has a structure in which the front wheel is a double caster and does not easily fall into the groove. However, in the case of a free wheel on which the caster rotates, there is a risk that the rotation will fit along the groove. In a passage or the like that still has grooves, irregularities, steps, etc., it may become stuck and unstable, and smooth movement may be difficult. In particular, at the railroad crossings, there were cases where the front wheels were stuck in a groove and could not be pulled out, and could fall, resulting in injury or death in the worst case.

  Patent document 1 “handcart” is a silver car or an elderly car handcart that can be folded in both the front-rear direction and the width direction by an open / close bar arranged in an X shape. In other words, it is not a structure corresponding to a groove or a step in the passage during use.

  Patent document 2 "walker" has an auxiliary wheel at a high position in front so that the front wheel can go over the step without being caught when it reaches the step, and the user does not fall down due to unexpected movement of the front wheel. However, the auxiliary wheels are small and unstable, and do not take into account the grooves and steps of the passage.

  Patent document 3 “pedestrian and caster unit attached thereto” discloses a configuration of a caster unit including a pressing member attached to a leg, a wheel disposed below the leg member, and an elastic member extending and contracting in the vertical direction. However, it does not correspond to steps or discontinuous passages.

  As described above, none of the conventional silver cars is suitable for moving discontinuous portions such as grooves and irregularities, and does not consider the action of smooth wheels.

The present invention has been made in view of the above-described problems of the prior art, and the object of the present invention is to walk or carry goods when an elderly person or a physically handicapped person who can walk independently stands out. Provided is a silver car in which a wheel smoothly moves so that the silver car used in the vehicle moves in a discontinuous passage such as a groove or an uneven portion so as not to be fitted into the groove or bumped into the uneven portion.

The silver car according to the invention of claim 1 is
A front part of a silver car having a seat, a basket bag, and a handle, and having a front wheel and a rear wheel,
Attaching the auxiliary wheel to a high part where the auxiliary wheel contacts the ground when the front wheel hits the groove in the same direction as the rectilinear direction,
The auxiliary wheel is smaller diameter Ri by previous wheel, or formed to the size of the same diameter, and in response to freely moving wheel that can change direction to rotate the axle of the front wheels, a fixed wheel axle does not rotate A silver car characterized by forming,
Even when the turning caught in a groove of a railroad crossing where the front wheel traverses the track, so without entanglement along the length of the groove of the railroad crossing,
The auxiliary wheel is a fixed wheel attached toward the straight direction of the silver car.

The silver car according to the invention of claim 1 is
A front part of a silver car having a seat, a basket bag, and a handle, and having a front wheel and a rear wheel,
Attaching the auxiliary wheel to a high part where the auxiliary wheel contacts the ground when the front wheel hits the groove in the same direction as the rectilinear direction,
The auxiliary wheel is smaller diameter Ri by previous wheel, or formed to the size of the same diameter, and in response to freely moving wheel that can change direction to rotate the axle of the front wheels, a fixed wheel axle does not rotate A silver car characterized by forming,
Even when the turning caught in a groove of a railroad crossing where the front wheel traverses the track, so without entanglement along the length of the groove of the railroad crossing,
Since the auxiliary wheel is a fixed wheel attached in the straight direction of the silver car,
When the front wheel is approaching the groove or recess, since the auxiliary wheel to move climb over floated before wheel support load grounded, to proceed smoothly without or Tsukkaka' the recess or fitted into the groove it can. Since the normal level ground to ground the front wheels and the rear wheels auxiliary wheels proceeded without grounding, when the wheel is not grounded prior to approaching the discontinuities such as grooves or recesses, support the load auxiliary wheel is grounded, not It becomes possible to move smoothly and stably over the continuous part. When it becomes unstable to rotate freely previous wheels groove or recess such discontinuities, since the auxiliary wheel is fixed wheels to suppress the traveling direction and the ground, to maintain a stable smooth progress Can do. In particular, there is no need to worry about accidents such as injuries or obstacles caused by the front wheel being fitted into a groove and falling down at a railroad crossing that crosses the track.

It is a perspective explanatory view of the 1st case of the silver car concerning the present invention. It is a perspective explanatory view of the 2nd case of a silver car. It is a perspective explanatory view of the 3rd case of a silver car. An installation example of auxiliary wheel, type A is shown. An installation example of auxiliary wheel, type B is shown. An installation example of auxiliary wheel, type C is shown. An installation example of auxiliary wheel, type D is shown. It is a perspective explanatory view of a conventional general silver car.

An embodiment of a silver car according to the present invention will be described with reference to FIGS. The present invention is Ru are restricted to the following embodiments. In addition, the figure shows the outline, only a part is drawn and the detailed structure is omitted.

The silver car 1 shown in FIG. 1 to FIG. 3 is a walking auxiliary vehicle having four or more wheels used for walking, transporting goods, and resting when an elderly person or a physically handicapped person who can walk independently is going out. It is mainly used as a shopping car.
2 is a seat where an elderly person or the like sits down and takes a break, 3 is a basket or bag for storing things, and 4 is a handle for the elderly person or caregiver to push and move.
In the normal silver car 1, the front wheel 5 employs a free wheel that can change direction by rotating the axle, and the rear wheel 6 employs a fixed wheel that does not rotate the axle.
Of the front wheel 5 and the rear wheel 6, at least the front wheel 5 is attached and formed with an auxiliary wheel 5 a at a high position in the same direction as the straight traveling direction and in the rear or front.

FIG. 1 is a first example of a silver car. Both the front wheel 5 and the rear wheel 6 have a single wheel structure, and an auxiliary wheel 5a is attached to the rear upper part of the front wheel 5, and the auxiliary wheel 6a is also attached to the rear upper part of the rear wheel 6. This is an example of mounting.
By providing the auxiliary wheel 5a and bearing the load, the front wheel 5 travels over the groove X without being fitted into the groove X. Similarly, by providing the auxiliary wheel 6a and bearing the load, the rear wheel 6 also moves over the groove X smoothly.

FIG. 2 shows a second example of a silver car, in which the front wheel 5 is a double wheel, that is, a double caster, and an auxiliary wheel 5b is attached to the rear upper part of the front wheel 5.
By bearing the load on the auxiliary wheel 5b located at the rear upper part of the front wheel 5, the front wheel 5 travels over the upper part without fitting into the groove X, and then the rear wheel 6 also passes over without fitting into the groove X. proceed.

FIG. 3 is a third example of a silver car. Both the front wheel 5 and the rear wheel 6 have a single wheel structure. An auxiliary wheel 5c is attached to the front upper part of the front wheel 5, and the auxiliary wheel 6b is also attached to the front upper part of the rear wheel 6. This is an example of installation.
By providing the auxiliary wheel 5 c on the front wheel 5 and the auxiliary wheel 6 b on the rear wheel 6, both the front wheel 5 and the rear wheel 6 travel over the groove X without fitting.

As shown in the first to third examples above, when the auxiliary wheels 5a to 6a are attached, the auxiliary wheels 5a to 6a are grounded when the front wheel 5 and the rear wheel 6 reach the groove X or the recess. Thus, the front wheel 5 and the rear wheel 6 are lifted and moved over the load so that they can move smoothly without being fitted into the groove X or protruding into the recess.
In particular, there is no need to worry about accidents such as injuries or obstacles due to the front wheel 5 being fitted into the groove X and falling over at a railroad crossing crossing the track.

Auxiliary wheel 5a~6a~ the weight burden increases Shinano odd, using lightweight member such as synthetic resin having durability. In addition, the auxiliary wheels 5a to 6a are structured so that they can be screwed or inserted so that they can be attached / detached or adjusted as necessary.

A case where an auxiliary wheel is installed on the front wheel will be described as an example with reference to FIGS. Each example shows an installation example in which an auxiliary wheel is a fixed wheel with respect to a free wheel that can change its direction by rotating its axle. As described above, since the narrow wheel may be caught in the groove by changing the direction of the narrow wheel, the auxiliary wheel adopts a fixed wheel that does not coincide with the groove direction.

FIG. 4 shows an installation example of an auxiliary wheel, which shows type A.
7 is a main frame, and 8 is an auxiliary arm.
The front wheel 5 is attached to a rotation shaft 7 a at the tip of the main frame 7. The front wheel 5 is a free wheel whose direction can be changed as indicated by a rotation arrow R.
The auxiliary wheel 5 a is attached to the fixed shaft 8 a at the tip of the auxiliary arm 8. The auxiliary wheel 5a is a fixed wheel that does not change its direction as indicated by the straight arrow S.
The auxiliary wheel 5a is formed to have a diameter smaller than that of the front wheel 5 as shown in the drawing or the same diameter.
A broken line U shows an example in which the auxiliary wheel 5a has a detachable pinning structure.
In this way, the auxiliary wheel 5a is attached and formed in the same direction as the straight traveling direction and at a high rear portion with respect to the front wheel 5, so that the auxiliary wheel 5a is inserted into the groove X as shown by the arrow. The ground wheel bears a load and the front wheel 5 travels over the groove X without being fitted into the groove X.

FIG. 5 shows an installation example of auxiliary wheels, which shows type B.
7 is a main frame, and 9 is an auxiliary arm.
The front wheel 5 is attached to a rotation shaft 7 a at the tip of the main frame 7. The front wheel 5 is a free wheel whose direction can be changed as indicated by a rotation arrow R.
The auxiliary wheel 5 b is attached to the fixed shaft 9 b at the tip of the auxiliary arm 9. The auxiliary wheel 5b is a fixed wheel that does not change its direction as indicated by the straight arrow S.
The auxiliary wheel 5b is formed to have a diameter smaller than that of the front wheel 5 as shown in the drawing or the same diameter.
A broken line V shows an example in which the auxiliary wheel 5b has a detachable screw fastening structure.
In this way, by attaching the auxiliary wheel 5b in the same direction as the rectilinear direction and at a front high portion with respect to the front wheel 5, as shown by a straight arrow, when the front wheel 5 approaches the groove X, When the preceding auxiliary wheel 5b comes into contact with the load and bears the load, the front wheel 5 travels over the groove X without being fitted into the groove X.

FIG. 6 shows an installation example of an auxiliary wheel, which shows type C. A mounting base 11 is fixed to the front end of the main frame 7 via a rotation shaft 10 . The front wheel 5 is composed of a front main wheel 5A and a rear auxiliary wheel 5B. The front main wheel 5A is attached to the rotating shaft 11a and can be freely changed in direction as indicated by a rotation arrow R, and the rear auxiliary wheel 5B is fixed. A fixed ring that is attached to the shaft 11b and does not change its direction as indicated by a straight arrow S is used. The front main wheel 5A and the rear auxiliary wheel 5B are shown as having the same diameter. Thus, since the auxiliary rear wheels 5B fixed wheels, and to maintain the straight direction in the same direction, as shown by the straight line arrow, when the forward main wheels 5A is approaching the groove X, Backward auxiliary wheel 5B is By grounding and bearing the load, the front main wheel 5A can get over the groove X without being fitted into the groove X, and can smoothly go straight.

FIG. 7 shows an installation example of an auxiliary wheel and shows type D.
A mounting base 13 is fixed to the front end of the main frame 7 via a rotating shaft 12.
The front wheel 5 is composed of a front main wheel 5C and a rear auxiliary wheel 5D. The front main wheel 5C is a free wheel which can be changed in direction as indicated by a rotation arrow R by being attached to a rotating shaft 13a, and the rear auxiliary wheel 5D is a fixed shaft. A fixed ring that is attached to 13b and does not change its direction as indicated by a straight arrow S is shown.
The front main wheel 5C and the rear auxiliary wheel 5D are shown as having the same diameter.
As described above, the rear auxiliary wheel 5D is a fixed wheel and maintains the same direction as the straight traveling direction. Therefore, when the front main wheel 5C reaches the groove X as shown by the straight arrow, the rear auxiliary wheel 5D is grounded. Thus, by bearing the load, the front main wheel 5C can get over the groove X without being fitted into the groove X, and can smoothly advance straight, and can smoothly advance even in the uneven portion or the stepped portion Y.

The structure of the above-mentioned silver car is not only a wheelbarrow for the elderly and the physically handicapped, but also a walker for walking training and walking assistance, a stroller for infants, a front two-wheel walker, four-wheel walker, four-wheel walker It can also be used for cars and casters.

1 silver car
2 seats
3 baskets, bags
4 handles
5 front wheels
5a, 5b, 5c auxiliary wheel
6 rear wheels
6a, 6b auxiliary wheel
7 main frames
8 auxiliary arms
9 Auxiliary arm
10 rotation axis
11 mounting base
12 rotation axes
13 mounting base

Claims (1)

A front part of a silver car having a seat, a basket bag, and a handle, and having a front wheel and a rear wheel,
Attaching the auxiliary wheel to a high part where the auxiliary wheel contacts the ground when the front wheel hits the groove in the same direction as the rectilinear direction,
The auxiliary wheel is smaller diameter Ri by previous wheel, or formed to the size of the same diameter, and in response to freely moving wheel that can change direction to rotate the axle of the front wheels, a fixed wheel axle does not rotate A silver car characterized by forming,
Even when the turning caught in a groove of a railroad crossing where the front wheel traverses the track, so without entanglement along the length of the groove of the railroad crossing,
The auxiliary wheel is a fixed wheel attached toward the straight direction of the silver car.

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