JP2008136764A - Four-wheel walking stick - Google Patents

Abstract

[PROBLEMS] To improve mobility by attaching wheels to the front and rear of a walker used instead of a cane, and at the same time to control rear wheel rolling by a brake operation using a clutch mechanism, and at the same time, rear wheels are connected via a link. Control and increase safety. Furthermore, a brake lock device is provided, and these are attached to the grip portion so that all of them can be operated at hand, thereby enhancing the ease of operation.
A front gripping portion, a rear gripping portion, and a gripping portion in which a brake lever is rotatably connected and a wheel portion are connected by a frame, a clutch arm and a link are attached to a lower bracket, and the front gripping portion is pushed down. The wheel is controlled by lowering the front wheel sheath tube or by engaging the clutch and link connection pipes with the gears of the wheel by a brake operation for holding the brake lever of the holding part.
[Selection] Figure 2

Description

  The present invention relates to a wheeled walker used by an elderly person or a person with a walking disability instead of a cane.

  A frame having a rod-shaped gripping portion that can be gripped with one hand, a wheel portion having a plurality of wheels that support the frame and that can be rolled downward, and a brake device in the frame gripping portion are assisted for walking. There is a walker.

This walker is equipped with a brake device to control the speed. The brake device 20 presses the brake shoe 21 against the rear wheel 15B by a drive wire 26 connected to a brake lever 29 provided at the lower part of the gripping portion, and simultaneously contacts the rod 34 positioned between the front wheels 15A-15A against the ground. I am letting.
JP, 9-38161, A There is also a four-wheel walking stick that moves the front of the gripping part up and down, hangs the clutch arm on the front wheel, and controls the rotation of the front wheel to the rear. JP 2005-137410 A

  A large walker that is positioned in front of the body and uses the grip portion with both hands to use cannot be used by those who can use only one hand, and it is bulky and heavy, so it is easy to use. It is inconvenient to carry and the place of use is remarkably restricted, and it is difficult to secure a storage place.

  Therefore, an invention described in Japanese Patent Application Laid-Open No. 9-38161 has been made as a small walker that can be operated with one hand.

  While a walker with wheels has higher mobility than a walking aid that does not have wheels, there is a risk of falling due to acceleration, and it is necessary to have a function to reliably prevent this.

  In general, in order for a brake device of a walker to function, an operation of strongly gripping the brake lever of the grip portion is required.

  However, users who need walking assistance with walker may be lacking in instantaneous power in elderly people or people who have some kind of gait disturbance, and the walker accelerates forward and leans forward when it is out of balance. It may not be possible to operate the lever. Further, when the gripping power itself is weak, the brake may not be able to function sufficiently.

  In the walker described in Japanese Patent Laid-Open No. 9-38161, the brake shoe 21 is pressed against the rear wheel 15B, and at the same time, the rod 34 is grounded to float the front wheel 15A from the walking surface and stop the movement of the walker.

   If the front wheel or rear wheel of a walker that has been moving smoothly until now stops suddenly, the user may not be on the body and may lose balance and fall forward.

  Next, in the four-wheel walking stick filed in 2003 by the applicant of the present application, when the pedestrian pushes down the front-wheel casing tube to which the clutch arm is attached, the clutch arm engages with the ratchet of the front wheel, It has a function to control rotation.

  If the overall size is compact and the distance between the front and rear wheels is small, such as a walking cane, sudden braking on the front wheels may cause the front to slip, so the present invention does not brake the front wheels but raises them. A braking method is used to prevent slipping backward while ensuring forward movement on a slope.

The rear wheel is braked by separating the front wheel from the walking surface and grounding the rod attached to the tip of the rear wheel sheath tube bent backward, and a link mechanism that transmits the braking of the front wheel to the rear wheel is adopted. Was not.
On the other hand, there are walkers that perform a locking operation with their feet, but these tend to give a strong impact to the walker, and there is a high risk of damage to the locking device. In addition, the foot operation is often uncertain, and therefore, the user needs to bend down and perform a reliable operation with fingers, which is a heavy burden on the user.

  Further, the mechanism for locking the brake main body against the wheel is not safe at all because the wheel may be forcibly rotated when the vehicle body is pushed strongly.

  Therefore, in the present invention, the applicant added an improvement to the previous application to gently brake the front wheels, and at the same time, to convey the movement to the rear wheels via the link and to have the function of reliably stopping the walker. In addition, a brake lock function was added to maintain this state, and all these brake operations can be performed at hand.

Clutch downward on the front wheel sheath tube having a clutch arm mounting pin hole below which constitutes a four-wheel walking cane with a grip portion which can be gripped with one hand, a wheel portion consisting of a pair of front and rear wheels, and a frame connecting them. A sliding pipe having an arm attachment pin hole and a stopper pin hole is inserted, and a gripping part support pipe having a lock rod attached rotatably is inserted above the sliding pipe and connected to the front gripping part.
A rear wheel sheath tube having a bent end and a gripping portion support pipe are connected by a connecting pipe, and the front and rear sheath tubes are connected by a bracket and a connecting rod to constitute a frame.

  The front gripping part provided with the lock hook locking wall and the brake lever are rotatably connected, and the leg end of the T-shaped link is rotatably attached to the front wheel bracket and the lower connecting rod.

  Push down the front grip directly, or pull up the brake lever to push down the front grip, press the stopper pin together with the sliding pipe by brake operation, and engage the clutch with the front wheel gear to control the rear wheel rolling backward In addition, the rear wheel is braked by engaging a connecting rod, which is a part of the link that moves in conjunction with the pressing of the stopper pin, with the rear wheel gear. Moreover, the stop state of a wheel is hold | maintained with the lock pin provided in the holding part vicinity.

Because the wheel is attached to the walking cane, the walking assist function is enhanced, and the brake device and the locking device are attached, so that the walking cane has functionality and safety.
In addition, since the front wheels are gently braked, the rear wheels are not lifted and the user does not fall forward, and the front wheels and rear wheel brakes are moved together via the link, so that the walker is reliably stopped. can do.

  In addition, the walking cane can be surely stopped because it has a brake lock function for maintaining the braked state. Moreover, since all these brake operations can be performed at hand, there is no need to bend over, which is convenient.

  In addition, since the brake operation can be automatically performed by natural weight shift, the walking cane can be used with peace of mind even by an elderly person whose instantaneous power has declined.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the drawings.
The four-wheel walking cane 1 according to the present invention comprises a grip portion 2 that performs a brake operation and a lock operation, a wheel portion 3 having a pair of front wheels 5 and a rear wheel 10, and a plurality of pipes that connect the grip portion and the wheel portion. It consists of a frame part 4.

FIG. 1 is a perspective view of the four-wheel walking cane 1, and FIG. 2 is an exploded configuration diagram of the walking cane 1.
The front wheel portion frame having a pair of front wheels 5-5 includes a front wheel portion sheath tube 6 having a clutch arm mounting pin insertion hole 6a formed below and a sliding pipe 7 and a sliding pipe 7 that slide in the sheath tube. It is comprised from the holding part support pipe 8 inserted in the upper part of this, and connected with the holding part front.

  A height adjusting pin 9 for adjusting the height of the grip portion 2 is attached to the upper portion of the slide pipe 7 via an elastic body such as a spring, and the grip portion support pipe 8 is moved up and down while operating the pin 9 so as to be suitable. When the pins 9 are opened at a height, the pins 9 are fitted into the height adjusting holes 8a formed in the gripping portion support pipe 8 and fixed at a desired height.

  A clutch arm pin sliding hole 7 a and a stopper pin insertion hole 7 b are formed below the sliding pipe 7.

  On the other hand, similarly, a rear wheel frame having a pair of rear wheels 10-10 has a gripping portion support pipe 12 for connecting the rear wheel portion sheath tube 11 formed by bending the lower end 11a rearward to the rear of the gripping portion 2. The connecting part 13 connects the holding part supporting pipe 12 and the rear wheel part sheath pipe 11.

  Above the connecting pipe 13, a height adjusting pin 14 for adjusting the height of the grip portion 2 is slid on the support pipe 12 while pressing the mounting pin 14 through an elastic body such as a spring, and the pin is moved to an appropriate height. When 14 is opened, it is fitted into one of the plurality of height adjustment holes 12a formed in the holding part support pipe 12 and fixed at a desired height.

  A rod 15 is attached to the lower end of the rear wheel casing tube 11 to increase the frictional force at the time of ground contact.

  L-shaped brackets 16 and 17 fitted above the front and rear sheath tubes 6 and 11 are connected in a substantially horizontal direction by a connecting pipe 18 and fastened by mounting rivets 19 and 20.

  On the other hand, a connecting pipe 23 that connects the sheath pipes in a substantially horizontal direction is connected to the L-shaped brackets 21 and 22 that are inserted below the front and rear sheath pipes 6 and 11 and fastened with rivets 24 and 25.

  As shown in the perspective view 1, it is convenient to attach a bag 41 to the upper connecting pipe 18 and store and carry small items such as valuables and water bottles.

  The bracket 21 is provided with a clutch arm pin mounting hole 21a, a stopper pin sliding hole 21b, and an axle insertion hole 21c for the front wheel 5-5. The bracket 22 is provided with an axle insertion hole 22a for the rear wheel 6-6.

  Although it is the approximate size of the walking cane 1, the gripping part 2 is about 200 mm, the diameter of pipes used for the frame material is 16 to 20 mm, the diameter of the wheels is about 120 mm, the distance between the front wheels is about 190 mm, and the upper side from the ground When the height adjustment holes 8a and 12a drilled at about 25mm intervals in the holding part support pipes 8 and 12 having a height of about 550mm and a length of about 160mm are adjusted, the total height expands and contracts to 800mm to 900mm Is possible.

  As the frame material, a metal such as stainless steel, a lightweight metal such as aluminum, or a hard resin material is used. The grip 2 is covered with a protective grip made of elastic resin.

  Next, the grip part 2 will be described.

  FIG. 3 is a front sectional view of the grip portion 2, and FIG. The grip portion 2 extending in a substantially horizontal direction that can be gripped with one hand is divided into a front grip portion 26, a rear grip portion 27, and a brake lever 28.

  The front gripping portion 26 is a boat bottom type and has a substantially elliptical connecting hole 26a for connecting the gripping portion support pipe 8 to the front, and has a locking wall 26b for locking the lock pin 29 inside. The reverse L-shaped rear gripping portion 27 has a circular connecting end 27 a and the other end is fixed to the gripping portion support pipe 12.

  A connection hole 28b is formed at one end of a brake lever 28 having a spring accommodating portion 28a for accommodating an elastic body 33 such as a spring in the bottom of the boat, and after the brake lever 28 is connected to the front gripping portion 26, the rear grip The front gripping portion 26 and the brake lever 28 are rotatably connected by covering the portion 27 and inserting a rivet through the link point 28b. The end 27b of the rear grip part is covered with a cover.

  The divided gripping part front 26 is pressed to push down the sliding pipe 7, the clutch arm 31 is engaged with the ratchet 35 of the front wheel part, and the rear wheel rotation is braked. Similarly, even if the brake lever 28 is pulled up while gripping the grip portion 2, the front grip portion 26 is lowered by the link point 28b, and the rotation of the front wheels can be braked in the same manner.

Next, how the braking of the rotation of the front and rear wheels is performed will be described.
First, a clutch mechanism is used for rotational braking to the rear of the front wheels.

  FIG. 5 is an enlarged front view of the wheel portion showing the clutch mechanism and the braking mechanism for the rear wheel, FIG. 6 is a front wheel perspective view, and FIG. 7 is a front view of the same.

A pair of L-shaped clutch arms 31 in a side view is attached to the bracket 21 attached below the front wheel portion sheath tube 6 with the sliding pipe 7 installed, in a side view. The clutch arm pin 30 communicates the clutch arm pin sliding hole 7 a of the sliding pipe 7, the clutch arm pin hole 6 a of the front wheel portion sheath tube 6, and the clutch arm pin sliding hole 21 a of the bracket 21.
Next, an elastic body 32 (rubber or the like) is hung on the clutch arm 31 and the bracket 21 to apply an urging force for returning the clutch arm 31 to the bracket 21 side, thereby restricting the rotation range of the clutch arm 31.
The sliding pipe 7 to which the clutch arm 31 is attached is connected to the holding part support pipe 8 at the upper side, and the holding part 2 is always lifted upward by the urging force of the spring 33. Since the clutch arm 31 is supported by the stopper pin 34 and is free from the ratchet 35, the front wheel smoothly rotates in the traveling direction. When the walking cane 1 goes too far forward or the user wants to stop the walking cane, the user puts his weight on the front part 26 of the gripping part or pulls up the brake lever 28 to lower the sliding pipe 7 together with the gripping part support pipe 8. Thus, the stopper pin 34 connected to the sliding pipe is lowered.
Then, the leg 31a of the clutch arm 31 comes into contact with the ratchet 35 of the front wheel 5, and the rearward rotation of the front wheel 5 is braked.
Therefore, even if the vehicle stops on an uphill or the like, if the leg 31a of the clutch arm meshes with the ratchet 35, the walking cane 1 does not run backward and does not slide down.
The stopper pin 34 also determines the stopping of the sliding pipe 7. The sliding pipe 7 is prevented from falling off from the front wheel portion sheath tube 6 when the grasping portion 2 is grasped and the walking cane 1 is lifted and carried.
In order to reduce a collision sound when the clutch arm 31 comes into contact with the ratchet 35, the leg portion 31 a of the clutch arm is covered with a cover 36.
On the other hand, when the balance is lost rearward and the front wheel 5 is lifted, the rod 15 attached to the front end of the rear wheel sheath tube 11 bent rearward is grounded and the walking cane 1 stops. In this embodiment, the bottom surface of the rod 15 is formed to have an inclined state of 20 degrees with respect to the ground, but this angle is approximate and is not limited to this.
In the walking stick 1 according to the present invention, the rear wheel 1 is braked simultaneously with the rotational braking of the front wheel. One end 37 a of a T-shaped link 37 is attached to the bracket 21 of the front wheel portion with a stopper pin 34. One leg end 37b is rotatably attached to a substantially intermediate position of the lower connecting pipe 23. The attachment hole 38 of the link 37 to the bracket 21 is formed in a substantially elliptical shape so that the stopper pin 34 can slide.
FIG. 8 is a perspective view of the link 37-37. The link 37 is connected to the other leg end 37c by a connecting rod 39. When the stopper pin 34 is lowered together with the sliding pipe 7, the link 37 moves in the direction of the arrow (FIG. 5), and the connecting rod 39 is connected to the rear wheel. 10 is engaged with the gear 40 and the rolling of the rear wheel 10 is stopped.
In general, if the front wheels are braked and stopped suddenly, they tend to fall forward. If the distance between the front and rear wheels is narrow, like a walking stick, it is more susceptible to sudden braking. Therefore, in the invention of the present application, first the rear wheel of the front wheel is braked by the clutch, the movement is transmitted to the rear wheel through the link, the connecting rod is engaged with the gear of the rear wheel, and the rear wheel is gently braked. Compared to a brake operation in which a brake shoe or the like is directly pressed against the front wheel or the rear wheel, the braking impact is gentle and there is no risk of falling forward.
Rolling braking to the rear of the front wheel and braking of the rear wheel that operates synchronously via a link to this are performed by a brake operation that depresses the grip portion front 26.
When the pressing of the front gripping portion 26 is released, the sliding pipe 7 also returns to the original position, and the brake is released. And the state where the brake was applied can be hold | maintained by attaching the lock hook 29 to the lock hook attachment hole 8b of the holding part support pipe 8. FIG.
As shown in FIG. 10, the lock rod 29 is a gate-shaped rod formed by bending both ends 29 b-29 b so as to face each other, and both end portions 29 b are rotatably attached to the upper side of the holding portion support pipe 8. The brake lever 28 is gripped while pushing the lock rod up with a finger (FIG. 9a), and the brake lever 28 is urged by the spring 33 until the lock rod 29 comes into contact with the lock rod locking wall 29b formed on the inner side of the front gripping portion. When the brake lever 28 is released in this state, the one end 29a of the lock rod 29 is locked to the lock rod locking wall 26b and the brake is locked. (FIG. 9c).
When releasing the lock, when the brake lever 28 is pulled up again, one end 29a of the lock rod 29 is separated from the locking wall 26b, and the sliding pipe 7 is returned to the original position together with the gripping part support pipe 8, and the front wheel and the rear The meshing of the gears with the wheel is released, and the walking cane 1 moves forward.
Thus, the four-wheeled walking stick of the present invention is extremely excellent in terms of functionality, stability, operability and safety.
That is, since it can be held and operated with one hand, even a dominant hand or a hemiplegic patient such as a stroke can be held with one hand, and the weight can be stored to assist walking, so that the moving operation is easy. Moreover, since it has a pair of front and rear wheels, it has excellent mobility and can walk stably. On the other hand, when the rear-wheel casing tube bent backward is grounded, the front of the walking cane floats from the ground, and the direction of the walking cane becomes easy with the rear-wheel casing tube as a fulcrum. This can also be used on ascending stairs and uphills. That is, the front wheel portion is lifted to ground the rear wheel portion sheath tube, and it can be used like a normal cane.
The brake operation is automatically performed by weight shift when the balance is lost during walking. Even when an elderly person who cannot perform a quick braking operation is turned forward, the sliding pipe 7 is lowered and the clutch arm 31 is moved to the gear 35 of the front wheel part when the front gripping part 26 is pushed down by natural weight movement. Engagement and the rear wheel rolling are controlled. Further, the connecting rod 39 of the link 37 with the leg end attached to the connecting rod 23 installed between the bracket 21 on the front wheel portion and the front and rear brackets meshes with the gear 40 on the rear wheel portion, and the rear wheel 10 also stops rolling. It is.
The braking operation by the pressure contact of the brake shoe or the like to the front wheel or the rear wheel has a large impact on the entire walking cane, and the user tends to lose the balance such as turning forward, but the brake of the present invention acts gently. Therefore, the braking impact can be reduced.
Moreover, the brake operation is convenient because it can be performed by a natural movement of the body weight or a hand operation by pulling up the brake lever attached below the rear gripping portion.
It also has a brake lock device that reliably stops the walking cane when stopping on a slope or taking a break. Since this lock device is also provided on the grip, inconveniences such as a loss of balance when performing foot brakes occur. Absent.
Next, the four-wheel walking stick according to claim 2 will be described with reference to the drawings.
This walking cane has a grip portion 42 that can be gripped with one hand and a wheel portion having a pair of front and rear wheels, and is constituted by a frame portion that connects the grip portion 42 and the wheel portion.
The configuration of the wheel portion and the frame portion is the same as that of the walking cane according to claim 1. The difference is the structure of the gripping part. FIG. 11 is an exploded configuration diagram of the grip portion 42, and FIG.
The grip portion 42 has a connecting end 44a with the front grip portion support pipe 43, a lock rod locking wall 44b for locking one end 46a of the lock rod 46 in the front, and a storage for storing an elastic body such as a spring 45 in the rear. The brake lever 44 is formed with a portion 44c and a protective grip 46 that covers the brake lever 44 and is pivotally connected by a shaft 47 at the center. A rear grip support pipe 48 is connected to the rear of the L-shaped protective grip 49.
The brake lever 44 is operated as follows.
The movement of the frame and the movement of the clutch arm and the link accompanying the frame are the same as those of the four-wheel walking stick according to claim 1.
When applying the brake, the brake lever 44 is pulled up while holding the holding part 42 with one hand. Then, the brake lever 44 is lowered with the shaft 47 as a fulcrum, and the front gripping portion support pipe 43 connecting the end portion 44a is pushed down.
When the sliding pipe, which is connected to the gripping part support pipe 43 at the upper part and attached with the stopper pin at the lower part, slides in the front wheel part sheath pipe, the stopper pin moves downward, is attached to the lower bracket, and is locked by the stopper pin. The clutch arm that has been turned rotates and meshes with the gear of the front wheel portion, and the rearward rotation of the front wheel is braked.
The link transmits this movement to the rear wheel, and the rear wheel is braked.
That is, the stopper pin is inserted into one end of the T-shaped link and pivotally supported by the lower bracket, and the other end is rotatably attached to the lower connecting rod connecting the front and rear brackets. When the stopper pin is lowered as the sliding pipe is pressed, the T-shaped link rotates rearward, and the connecting rod connecting the pair of left and right links moves to the rear wheel side and meshes with the rear wheel gear, so that the rear wheel It stops.
The brake can also be locked. If the grip 49 and the brake lever 44 are held between the both ends of the gate-shaped lock rod 46, which is pivotally attached to the front gripping portion support pipe 43, while being pushed up in the direction of the gripping portion with a finger, it resists the biasing force of the spring 45. Then, the brake lever 44 rotates and 46a engages with the lock rod engaging wall 44b (FIGS. 13a and 13b). Even if the brake lever 44 is loosened in this state, the lock rod 46 remains engaged with the engagement wall 44b and the brake is applied, that is, the locked state is maintained.
Since the front of the brake lever is extended and connected to the front gripping part support pipe and the outside is covered with a protective grip, this type of walking cane does not operate even when the front of the gripping part is pressed, and the brake lever device Only brake operation is possible.
Such a simple brake operation may be more convenient for elderly people.

The present invention can be used for a walking cane with a wheel that an elderly person uses instead of a cane. Since it has a gripping part that can be gripped with one hand, it can be used for running with a dominant hand on either the left or right side of the body, or for running while a hemiplegic patient deposits weight on the side of the body.

The perspective view of a four-wheeled walking stick. The exploded block diagram of a four-wheeled walking stick. FIG. The structure perspective view of a holding part. The expansion explanatory view of a wheel braking part. FIG. Front wheel front view. The perspective view of a link. a Explanatory drawing which shows the operating state of a locking mechanism.

        b Same as above, an explanatory view showing a state where the lock rod is pushed up while pulling up the brake lever.

c Explanatory drawing which shows the locked state.
The top view of a lock fence. The decomposition | disassembly block diagram of the holding part of the four-wheeled walking stick of Claim 2. The top view of a holding part. a Front view of the gripping part of a four-wheel walking stick.

          b Explanatory drawing which shows the state in which the brake was locked.

Explanation of symbols

1, four-wheel walking canes 2, 42, gripping part 3, wheel part 4, frame part 5, front wheel 6, front wheel part sheath tube 7, sliding pipes 8, 12, 43, 48, gripping part support pipes 9, 14, Height adjustment pin 10, rear wheel 11, rear wheel sheath tube 13, connecting pipe 15, rods 16, 17, 21, 22, brackets 18, 23, connecting pipes 19, 20, 24, 25, rivets 26, front grip Part 27, 44, rear grip part 28, 45, brake lever 29, 46, lock rod 30, clutch arm pin 31, clutch arm 32, rubber 33, 45, grip part spring 34, stopper pin 35, 40, gear 36, Cover 37, link 39, link connecting rod 49, protective grip

Claims (2)

From the front gripping part provided with the lock rod locking wall, the rear gripping part, and the gripping part that rotatably connects the brake lever, the wheel part that consists of a pair of front wheels and rear wheels, and the frame that connects them A configured four-wheel walking cane,
Insert a sliding pipe with a clutch arm mounting pin hole and a stopper pin hole below into the front wheel part sheath tube with a clutch arm mounting pin hole below, and attach a lock rod to the upper part of the sliding pipe in a rotatable manner. The front gripping part supporting pipe is inserted and connected to the front gripping part,
A rear wheel sheath tube having a bent end and a rear grip support pipe are connected by a connecting pipe, and the front and rear sheath tubes are connected by a bracket and a connecting rod to constitute a frame.
The end of the T-shaped link is pivotally attached to the stopper pin inserted into the front wheel bracket and the lower connecting rod, and when the stopper pin is lowered together with the sliding pipe by pressing the grip, the clutch attached to the bracket is moved to the front wheel gear. A four-wheeled walking cane that brakes the wheel by engaging the connecting rod of the link with the rear wheel gear. A gripping part comprising an end connected to a gripping part support pipe, and a brake lever provided with a lock hook locking wall in the front thereof rotatably connected to a protective grip attached to the rear gripping part support pipe; A four-wheeled walking stick comprising a pair of front wheels and a rear wheel, and a frame connecting them,
Insert a sliding pipe with a clutch arm mounting pin hole and a stopper pin hole below into the front wheel part sheath tube with a clutch arm mounting pin hole below, and attach a lock rod to the upper part of the sliding pipe in a rotatable manner. Insert the gripping part supporting pipe and connect it to the front gripping part,
A rear wheel sheath tube having a bent end and a gripping portion support pipe are connected by a connecting pipe, and the front and rear sheath tubes are connected by a bracket and a connecting rod to constitute a frame.
Attach the stopper pin inserted into the front wheel bracket to the lower connecting rod and turn the leg end of the T-shaped link so that it can rotate. A four-wheeled walking cane that engages the gear and brakes the wheel by engaging a connecting rod attached to one end of the link with the rear wheel gear.

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