JP3874740B2 - Walking cane with wheels - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a walking cane with a wheel having a pair of wheel parts and a cane part.
[0002]
[Prior art]
A conventional walking cane with a wheel includes a three-wheeled walking cane having a front wheel and a pair of rear wheels, and a handle with an adjustable length within the position range of the three wheels. A stop means is provided between the rear wheels, and the front wheel is lifted and the center of gravity is moved backward to use it. In addition, a hook or the like for hooking a load is provided on a support formed integrally with the handle. (For example, refer to Patent Document 1.)
As another conventional example of a three-wheel walking cane, a fork with a stopper is provided with a vertically movable axle part, and a vertically movable axle with a wheel via a spring is provided on the fork. There is a wheeled cane with a non-slip device that stops when the hawk sinks and the stopper contacts the wheel when applied. (For example, refer to Patent Document 2.)
Further, there is a walking cane having a plurality of leg portions having a plurality of wheels in front of a lower end portion of a support member extending in the vertical direction and having a plurality of end portions for increasing friction at the rear. (For example, Patent Document 3)
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-196915
[Patent Document 2]
Japanese Patent Laid-Open No. 11-332928
[Patent Document 3]
JP-A-9-154902 gazette
[Problems to be solved by the invention]
The three-wheel walking cane of Patent Document 1 moves the center of gravity to the rear to raise the front wheel and performs a brake operation. However, it does not function when the front is turned, and the cane self-propells backward and is dragged by this. There is a risk of falling. In addition, since the load is suspended on one long shaft that serves as a handle, the load is swayed and unstable. Since the cane itself is heavy and bulky, there is a problem with portability.
[0007]
The wheeled cane of Patent Document 2 requires an operation of grasping the brake lever to stop the rotation of the wheel, and elderly people who require a walking cane are often dull in reflexes. Key operation may be delayed, leading to a fall. When the weight is added to the cane, the frame sinks and the stopper works. However, when the weight is not added, the frame runs on its own, and, for example, the stability is poor when it stops. Also, when a hook is attached to a single long shaft formed integrally with the handle and the load is suspended, the load is shaken and cannot be balanced, which adversely affects the walking of the cane.
[0008]
Since the walking cane of patent document 3 is comprised from the flame | frame used as a base, a some front and back leg part, and the wheel apparatus fixed to this, a weight is heavy and especially a foot part will become bulky. This not only hinders the walking of other pedestrians, but also comes into contact with the user's own feet and obstacles on the road, which is inconvenient. There is no stopper mechanism for the wheel provided in the front, and the wheel does not stop even if it is turned forward, and there is a risk of falling forward.
[0009]
A conventional cane made of a single pipe not only has no place to hang the luggage, but also requires the action of lifting the cane in order to repeat the action of lifting the cane and pushing it forward and attaching the cane, and the body is supported There will be no unstable moments.
[0010]
Therefore, in the present invention, the wheel portion and the wand portion are connected, and one of them is always grounded to improve the stability, and the double-structure inner pipe connected to the gripping portion can be moved up and down to move the center of gravity back and forth. make it easier. In addition, the wheel can be used as a walking cane and carry wheel with excellent portability to ensure safety by controlling the rotation direction of the wheel in one direction while maintaining mobility, and to maintain stability when not in use. The purpose is to provide a cart.
[0011]
[Means for Solving the Problems]
Therefore, in the present invention, the wheel part sheath tube having the clutch arm attachment pin hole, the clutch attachment pin sliding hole and the axle insertion hole in the lower part and the cane part sheath pipe having the passage hole in the upper part are connected by the joining pipe, A clutch support tube having a clutch arm mounting pin sliding hole and a clutch pin mounting hole below is inserted into the wheel sheath tube, and one of the pair of gripping portion support pipes connected to the gripping portion is a clutch support tube and the other is a cane A main body is formed by elastically attaching to the sheath tube.
[0012]
A clutch arm and a clutch arm regulating device are attached to a clutch having a clutch arm attachment hole, a clutch connecting pin sliding hole and an axle insertion hole, and a pair of wheels are attached to the lower part of the wheel portion sheath tube, and the wheel portion sheath is attached. Parts that increase friction are attached to the ends of the tube and the wand sheath tube.
[0013]
The following will describe how the present invention configured as described above works to solve the problems.
[0014]
The walking cane with a wheel according to claim 1 has a wheel part at the front and a cane part at the rear, so that it is easier to move forward and the wheel or the cane part is always in contact with the ground. There is no need to lift the cane like a cane. Further, since the device for restricting the rotation range of the clutch arm is provided, the wheel rotates only in one direction, and only the walking stick does not self-propelled backward, and it does not drag and fall. Further, when the center of gravity is moved to the rear of the gripping portion and the front of the gripping portion is lifted, the clutch support tube moves upward in conjunction with this, but the wheel does not change its position due to its own weight, and the position of the clutch connected by the axle does not change. On the other hand, the clutch mounting pin pushes up the clutch arm while moving the sliding hole upward by the clutch support pipe, and the clutch arm rotated upward is released from the engagement of the locking portion of the wheel hub. As a result, the center of gravity can be moved smoothly with walking, while the wheels are always in a rotating state and can be moved easily.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
The best embodiment of the present invention will be described with reference to the drawings.
[0019]
FIG. 1 is a divided block diagram of a walking cane and carrier cart 1 with wheels.
[0020]
The walking cane 1 with a wheel is formed in an H shape by joining a main body portion with a wheel portion sheath tube 2 and a cane portion sheath tube 3 by welding two upper and lower pipes. A bag 38 can be suspended from the upper pipe 8 as shown in FIG.
[0021]
There is also a method in which a joint is used for the wheel sheath tube 2 and the joining pipe. This is because if the pipe melted by welding hangs down inside the wheel portion sheath tube 2, the clutch support tube 4 housed in the wheel portion sheath tube 2 may not slide smoothly. The upper pipe 8 is fitted into the joint 41 fitted to the upper part of the wheel casing tube 2, while the joint 42 formed integrally with the clutch 15 is fitted from below the wheel casing tube 2 to join the pipe 9. .
[0022]
A stone bump 17 is attached to the lower end of the wheel casing tube 2 to prevent the wheeled walking cane body from tilting even if one wheel 12 is fitted in the groove, thereby improving stability and increasing friction with the ground. .
A clutch arm connecting pin hole 19, a clutch connecting pin sliding hole 20, and an axle insertion hole 21 are bored in order from the top below the wheel portion sheath tube 2.
[0023]
The clutch support tube 4 is a long-axis cylinder having a long-hole clutch arm sliding hole 22 and a clutch connection pin hole 23 below, and a plurality of height adjustment holes 24 formed above.
[0024]
The gripping part mounting pipe 5 has a gripping part mounting hole 25 on the upper side and a connecting hole 26 for connecting to the clutch support pipe 4 on the lower side.
[0025]
On the other hand, a butt 18 is attached to the lower end of the cane sheath tube 3 to prevent the cane from slipping, and a connection hole 27 with the grip part attaching pipe 6 is formed at the upper end. The gripping part mounting pipe 6 has a gripping part connecting hole 28 at the upper end and a plurality of height adjusting holes 29 at the bottom.
[0026]
2a is a side view of the clutch 15, and 2b is a front view thereof.
[0027]
The clutch 15 is a convex cylindrical body in a side view and has a clutch support pipe insertion hole 30 in the vertical direction. From the top in the horizontal direction, the clutch arm mounting hole 31, a vertically long clutch connecting pin sliding hole 32, and an axle. An insertion hole 33 is formed.
[0028]
The rubber tube cover 43-43 is fitted and inserted into both leg portions 15a serving as axle insertion portions.
[0029]
In the method of assembling the walking cane 1 with a wheel according to the present invention, the clutch support pipe 4 is inserted into the wheel section sheath pipe 2 and then the clutch 15 is fitted below the wheel section sheath pipe 2 so that the wheel section sheath pipe 2 and the clutch support pipe are inserted. 4 and the clutch arm mounting pin holes 19, 22 and 31 of the clutch 15 are connected to each other and the clutch arm mounting pin 34 is inserted to attach the clutch arm 16 to the clutch 15. The pipe 4 and the clutch 15 are connected.
[0030]
Next, the clutch 15, the clutch support pipe 4, and the clutch attachment holes 32, 23, and 20 of the wheel casing pipe 2 are communicated, the clutch coupling pin 35 is inserted, and the clutch 15, the clutch support pipe 4 and the wheel section sheath pipe 2 are inserted. Are connected.
[0031]
Further, the rear axle 14 that connects the axle insertion hole 33 of the clutch 15 and the axle insertion hole 21 of the wheel portion sheath tube 2 is inserted, and a pair of wheels 12-12 are attached below the wheel portion sheath tube 2.
[0032]
On the other hand, after the gripping part connecting pipe 5 is covered from the upper end of the clutch support pipe 4, a connecting pin is inserted into the connecting hole 25 to connect the gripping part 7 and the gripping part connecting pipe 5, and provided at the lower end of the gripping part connecting pipe 5. Either the connecting hole 26 or the height adjusting hole 24 of the clutch support pipe 4 is communicated and adjusted to a desired height, and then fixed with the knob 10.
[0033]
The gripping part connecting pipe 6 is inserted into the cane part sheath tube 3, the pin (not shown) is inserted into the attachment hole 28 of the gripping part connecting pipe, and the gripping part 7 and the gripping part connecting pipe 6 are connected. In accordance with the desired height, the insertion hole 29 and the connecting hole 27 of the wheel portion sheath tube communicate with each other and are fixed by the knob 11.
[0034]
The connecting hole 7b in the front 7a of the grip 7 is a horizontally long slot so that the connecting pin can be moved when the front 7a of the grip 7 is lifted.
[0035]
Next, the clutch function will be described.
[0036]
4 is an enlarged front view of the wheel 12 and the clutch 15, FIG. 5 is a side view, and FIG. 3 is a perspective view.
[0037]
In a side view, a pair of L-shaped clutch arms 16-16 are rotatably attached to the clutch 15 by the clutch arm attachment pin 34 on the wheel side surface of the clutch 15, and an urging force for returning to the clutch 15 side is applied. The rotation range of the clutch arm 16 is controlled by applying an elastic body (rubber or the like). Since the rotation range of the clutch arm 16 is limited, the clutch arm leg 16a always returns to its original state after the wheel 12 rotates, after it has passed over the locking portion 13a of the wheel hub 13, and the wheel 12 It rotates only in one direction of the arrow. In order to reduce the collision noise when the clutch arm 16 abuts against the locking portion 13a of the hub, a rubber cover 37 is put on the tip of the leg portion 16a of the clutch arm, and the rubber tube cover 43 is put on the clutch leg portion 15a. To absorb the impact sound.
[0038]
FIG. 6 is an explanatory diagram showing the state of the walking cane and carrier cart 1 with wheels when the user is walking while repeating the center of gravity movement back and forth.
[0039]
In order to smoothly move the center of gravity, the present invention is devised so that the front 7a of the grip portion 7 moves up and down.
[0040]
When the user moves the center of gravity backward while using the walking cane 1 with the wheel while gripping the gripping part 7, the front 7 a of the gripping part 7 is lifted, and the gripping part support pipe 5 and the clutch support pipe 4 connected to the gripping part 7. Will also lift up. On the other hand, the clutch arm 16 is pushed up by the clutch coupling pin 35 sliding upward as shown in FIG. 7b from the state where it is engaged with the engaging portion 13a of the hub 13 of the wheel 12 as shown in FIG. 7a. The wheel 12 is rotated and released from the locking portion 13a of the hub, and the wheel 12 is rotated.
[0041]
More specifically, even if the clutch support tube 4 and the gripping portion connecting pipe 5 are lifted together with the front portion 7a of the gripping portion 7, the wheel 12 does not change its position due to its own weight, and the clutch 15 or the wheel connected to the wheel 12 by the axle 14 The position of the sheath tube 2 is also immovable. On the other hand, since the clutch connection pin 35 is connected to the clutch support pipe 4, it slides upward through the sliding hole 32 of the clutch and the sliding hole 20 of the wheel casing pipe. The clutch arm 16 connected to the clutch 15 is pushed up by the clutch connecting pin 35 that slides upward, rotates in the direction of the arrow, and is released from meshing with the locking portion 13a of the hub.
[0042]
In this way, while walking while gripping the gripping portion 7, the user can move the gravitational portion front 7a up and down to smoothly move the center of gravity, while the cane body can always travel forward with the wheels while being grounded.
[0043]
That is, the cane body on which the luggage is hung can be easily moved forward by the rotation of the wheel 12 while being in contact with the ground.
[0044]
Further, when the front 7a of the gripping part 7 is pushed down to tilt the center of gravity forward, and the clutch support pipe 4 is pushed down together with the gripping part support pipe 5, the clutch arm 16 is engaged with the locking part 13a of the hub, and the wheel 12 Will only rotate in one direction again.
[0045]
FIG. 8 is a perspective view showing a state in which the bag 38 is attached to the joining pipe 8 of the walking cane 1 with wheels. The bag 38 may be hung from the pipe 8 by an attachment belt 39, or may be attached to the pipe 8 using a hook or a planar fastener. The bag 38 can store necessary items such as plastic bottles, mobile phones, and towels. The walking cane 1 with a wheel is supported by upper and lower joining pipes, and is independent by three-point support of the wheel part and the cane part, so it has excellent stability, and further, the joining pipe for hanging luggage is supported by two sheath pipes. Even if the luggage is hung, the balance of the entire cane is not lost, and there is no wobbling of the luggage. Therefore, relatively large luggage can be carried.
[0046]
If the grip part 7 is covered with the cover 40, it is easy to grip and the texture is improved.
[0047]
【The invention's effect】
Since the wheel part and the wand part are connected, one of them is always in contact with the ground, and does not need to be lifted like a conventional single wand. Can do. Although the user walks while moving the center of gravity back and forth, that is, while alternately supporting the body with the wheel portion sheath tube and the cane portion sheath tube, the front of the grip portion moves up and down, so that the center of gravity moves smoothly. On the other hand, even if the clutch support pipe is lifted by lifting the front part of the gripping part, the entire body on which the luggage is hung is grounded, and the wheels also rotate, so it can be moved forward easily without lifting the entire cane. But it can be easily carried.
[0048]
When moving forward or climbing a hill, pushing the wheel part forward rotates the wheel and makes it easy to move forward. On the other hand, the rotation range of the clutch arm is restricted by an elastic body, so the wheel can only rotate in one direction. The brakes are applied to the wheels without being dragged by the rotation of the wheels and falling forward. When going down the hill, it is safe to advance the wheel part backward.
[0049]
Conveniently, the grip can be expanded and contracted to adjust the height of the walking stick according to the height of the user's back.
[0050]
Since the structure is simple, manufacturing is easy and low cost is possible.
[0051]
When the sheath tube or pipe is made of aluminum or light steel, it is lightweight, and the body width is narrow and the bulk is not high, so it is excellent for carrying, and it is easy to go up and down stairs and bring it to the train. In addition, it does not hinder the walking of other pedestrians and is easy to use because it is not easily caught by obstacles on the road.
[0052]
Since it is self-supporting with the three-point support of the wheel part and the cane part, it is excellent in stability, and when it is not in use, it is self-supporting and can drown.
[0053]
Furthermore, since the joint pipe for hanging the load is supported by the two sheath tubes, the balance of the entire cane is not lost even when the load is hung, and the load does not wobble. Further, since the user can travel while smoothly moving the center of gravity without lifting the entire cane, relatively large luggage can be carried.
[Brief description of the drawings]
FIG. 1 is an exploded configuration diagram of a walking cane with wheels.
FIG. 2 is a side view of a clutch.
b Same as above, front view.
FIG. 3 is a perspective view of a clutch and a wheel portion.
FIG. 4 is a front view of the same.
FIG. 5 is a side view of the same.
FIG. 6 is an explanatory view showing a state where the front part of the grip part is lifted.
FIG. 7 is an explanatory view showing a state in which a clutch arm is locked.
b An explanatory view showing a state in which the clutch arm is released.
FIG. 8 is a perspective view showing a state where a bag is attached to a walking cane with wheels.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, Walking cane with wheel 2, Wheel part sheath pipe 3, Cane part sheath pipe 4, Clutch support pipe 5, 6, Grasping part support pipe 7, Grasping part 8, 9, Joining pipes 10, 11, Height adjustment knob 12 , Wheel 13, hub 13 a hub locking portion 14, axle 15, clutch 16, clutch arm 17, 18, stone bump 19, clutch arm mounting pin hole 22, clutch arm mounting pin sliding hole 20, 32, Clutch mounting pin sliding holes 21, 33, axle insertion holes 23, clutch mounting pin insertion holes 24, 29, height adjustment holes 30, clutch support tube insertion holes 31, clutch arm mounting holes 34, clutch arm mounting pins 35 , Clutch pin 36, rubber 37, rubber cover 38, bag 43, rubber tube cover

Claims (1)

Joins the wheel sheath tube with the clutch arm mounting pin hole, the clutch mounting pin sliding hole and the axle insertion hole below, and the cane sheath tube with the through hole at the top and the end that increases friction at the lower end. Connected with pipes,
Insert a clutch support pipe having a clutch arm mounting pin sliding hole and a clutch pin mounting hole below into the wheel casing pipe,
One of the pair of gripping part support pipes connected to the gripping part is attached to the clutch support pipe and the other to the cane part sheath pipe in a telescopic manner,
A clutch arm and a clutch arm regulating device are attached to a clutch having a clutch arm mounting hole, a clutch connecting pin sliding hole and an axle insertion hole,
A walking cane with a wheel in which the clutch and a pair of wheels are attached below the wheel casing tube.

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