JP7125092B2 - walker - Google Patents

Description

TECHNICAL FIELD The present invention relates to, for example, a rollator for assisting walking of a user who has difficulty walking by himself.

2. Description of the Related Art Rolling carts have been known for assisting the walking of users who have weak legs and have difficulty walking by themselves, such as the sick, the physically handicapped, and the elderly. For example, Japanese Patent Laying-Open No. 2016-68784 (Patent Document 1) discloses a brake mechanism and a rollator using the same. According to Patent Document 1, a first brake bar that constitutes a brake mechanism has a first body portion having a first upper fulcrum and a first lower fulcrum, a first projecting portion, and a first grip portion. The second brake bar has a second body portion having a second upper fulcrum and a second lower fulcrum, a second projecting portion, and a second grip portion. The first projecting portion and the second projecting portion are pivotally attached to each other. The brake wire biases the first brake bar or the second brake bar such that the first vertical fulcrum and the second vertical fulcrum abut against the inside of the case.

JP 2016-68784 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a rollator that enables a user who has difficulty walking by himself to walk independently.

According to one aspect of the present invention, there is provided a rollator comprising at least one armrest and left and right support members arranged above the at least one armrest for supporting the upper body of the user from the left and right directions. . Each of the left and right support members has a front portion and a rear portion higher than the central portion.

Preferably, each of the left and right support members is formed such that the front portion is higher than the rear portion.

Preferably, the left and right support members are configured such that their positions in the front-rear direction can be adjusted.

Preferably, the at least one armrest includes left and right armrests. Each of the left and right armrests is formed such that the width in the left-right direction of the rear portion is wider than the width in the left-right direction of the front portion.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, there is provided a rollator that enables a user who has difficulty walking by himself to walk independently.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view from the front side which shows the whole structure of the walker 100 concerning 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view from the back side which shows the whole structure of the walker 100 concerning 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the whole structure of the walker 100 concerning 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the whole structure of the walker 100 concerning 1st Embodiment. 1 is a perspective view from the front side showing the overall configuration of a walker 100 showing a state in which contact support members 131L and 131R according to the first embodiment are lowered; FIG. 1 is a perspective view from the front side showing the overall configuration of a walker 100 showing a state in which vertical main frames 110L and 110R according to the first embodiment are lowered; FIG. Fig. 2 is a plan view from the front side showing the overall configuration of the walker 100 showing a state in which contact support members 131L and 131R according to the first embodiment are brought together; Fig. 2 is a plan view from the front side showing the overall configuration of the walker 100 showing a state in which the contact support members 131L and 131R according to the first embodiment are separated; Fig. 2 is a side view showing the overall configuration of the walker 100 showing a state in which contact support members 131L and 131R according to the first embodiment are moved forward; It is a side view which shows 132 L of 1st contact support members and 120 L of armrests concerning 2nd Embodiment. It is a side view which shows 133 L of 2nd contact support members and 120 L of armrests concerning 2nd Embodiment. FIG. 11 is a perspective view from the rear side showing the overall configuration of the walker 100 when the knee pads 150 according to the third embodiment are used; FIG. 11 is a perspective view of a knee rest 150 according to a third embodiment; FIG. 11 is a perspective view from the rear side showing the overall configuration of the walker 100 when the knee pads 150 according to the third embodiment are not used; It is a perspective view from the back side which shows the whole structure of the rollator 100 concerning 4th Embodiment. FIG. 11 is a perspective view of a knee rest 160 according to a fourth embodiment; FIG. 11 is a perspective view from the rear side showing the overall configuration of a walker 100 according to a fifth embodiment; FIG. 11 is a perspective view of a knee rest 170 according to a fifth embodiment; FIG. 21 is a perspective view from the front side showing the overall configuration of a walker 200 according to a seventh embodiment; FIG. 21 is a perspective view from the rear side showing the overall configuration of a walker 200 according to a seventh embodiment; FIG. 21 is a front view showing the overall configuration of a walker 200 according to a seventh embodiment; FIG. 21 is a rear view showing the overall configuration of a walker 200 according to a seventh embodiment; It is a left view which shows the whole structure of the rollator 200 concerning 7th Embodiment. It is a right side view showing the whole walker 200 composition concerning a 7th embodiment. FIG. 11 is a plan view showing the overall configuration of a walker 200 according to a seventh embodiment; It is a bottom view which shows the whole structure of the rollator 200 concerning 7th Embodiment. FIG. 14 is a bottom view showing the positional relationship among wheels 202L, 202R, armrests 220L, 220R, and upper body support frames 230L, 230R of the walker 200 according to the seventh embodiment; FIG. 21 is a left side view showing a state in which upper body support frames 230L and 230R are rotated according to the seventh embodiment; FIG. 23 is a left side view showing a state in which the upper body support frames 230L and 230R according to the seventh embodiment are stored;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated. For the sake of explanation, the members on the left side of the walker are denoted by "L", and the members on the right side are denoted by "R". ” and “L” may be omitted.
[First embodiment]

First, the overall configuration of the walker 100 according to the present embodiment will be described. FIG. 1 is a perspective view from the front side showing the overall configuration of a walker 100 according to the present embodiment when in use. FIG. 2 is a perspective view from a perspective view from the back side showing the overall configuration of the walker 100 according to the present embodiment when in use. FIG. 3 is a side view showing the overall configuration of the walker 100 according to the present embodiment when in use. FIG. 4 is a plan view showing the overall configuration of the rollator 100 according to the present embodiment when in use.

1 to 4, a walker 100 according to the present embodiment includes left and right front wheels 101L and 101R, left and right rear wheels 102L and 102R, and front wheels 101L and 101R as running units. It includes front leg frames 103L and 103R that pivot and rear leg frames 104L and 104R that pivot the rear wheels 102L and 102R, respectively. The upper portions of the left front leg frame 103L and the left rear leg frame 104L are attached to the left connecting member 105L at a predetermined angle. Similarly, the upper portions of the right front leg frame 103R and the right rear leg frame 104R are attached to the right connecting member 105R at a predetermined angle.

The left and right connecting members 105L and 105R are connected to each other with a predetermined gap by the left and right main frames 107, the left and right sub frames 109, and the like. It is preferable that the left and right front leg frames 103L and 103R and the left and right rear leg frames 104L and 104L are also connected to each other at predetermined intervals by various frames.

Left and right front leg frames 103L and 103R are respectively connected to lower portions by left and right folding links 106L and 106R. When the walker 100 is folded in the front-rear direction, the left and right folding links 106L and 106R are bent so that the left and right front leg frames 103L and 103R and the left and right rear leg frames 104L and 104R are connected to each other by the connecting member 105L. , 105R in the longitudinal direction.

The left and right vertical main frames 110L and 110R are inserted through the left and right connecting members 105L and 105R, respectively. As will be described later, the left and right vertical main frames 110L and 110R are adjustable in height relative to the left and right connecting members 105L and 105R, respectively.

Left and right armrests 120L and 120R are attached to the upper ends of the left and right vertical main frames 110L and 110R, respectively, facing rearward. A handle 112 and a brake lever 114 are attached to the upper ends of the left and right vertical main frames 110L and 110R so as to face forward.

The handle 112 and the brake lever 114 are formed in a U shape in plan view. Front portions of the handle 112 and the brake lever 114 are bent upward in a side view. As a result, the user of the walker 100 can easily grasp the handle 112 and the brake lever 114 while placing the elbows on the armrests 120L and 120R. In the present embodiment, the left and right rear wheels 102L and 102R are braked by rotating the brake lever 114 upward.

Left and right upper body support frames 130L and 130R are attached to upper ends of the left and right vertical main frames 110L and 110R via adjusting members 115L and 115R. As will be described later, the left and right upper body support frames 130L and 130R are adjustable in vertical height and horizontal width with respect to the left and right vertical main frames 110L and 110R or with respect to the adjustment members 115L and 115R. formed possible.

The left and right upper body support frames 130L and 130R are formed in an inverted L shape when viewed from the side. Contact support members 131L and 131R are attached to horizontal frames 130X on the upper portions of the left and right upper body support frames 130L and 130R, respectively. More specifically, an attachment frame 136L is fixed to the bottom of each of the contact support members 131L and 131R. An attachment frame 136L is attached to the upper horizontal frame 130X of the upper body support frames 130L and 130R so as to be adjustable in the front-rear direction.

Left and right side surfaces of each of the contact support members 131L and 131R are concave in plan view in FIG. As a result, the side surfaces of the user's upper body can be stably supported by the side surfaces of the contact support members 131L and 131R.

Further, each of the contact support members 131L and 131R has a concave upper surface as viewed from the side in FIG. This makes it easier for the user's side to be stably supported by the upper surfaces of the contact support members 131L and 131R.

Referring to FIG. 5, in walker 100 according to the present embodiment, as described above, left and right upper body support frames 130L and 130R are attached to left and right vertical main frames 110L and 110R, respectively, or to adjustment members. It is possible to adjust the height in the vertical direction and the width in the horizontal direction with respect to 115L and 115R.

More specifically, referring to FIGS. 1, 4, and 5, adjustment members 115L and 115R attached to the upper ends of left and right vertical main frames 110L and 110R are mounted on vertical frames 130Y below upper body support frames 130L and 130R. fixed. By tightening the fastening bolts 117L and 117R, the vertical frames 130Y of the upper body support frames 130L and 130R are tightened by the adjustment members 115L and 115R, and the left and right upper body support frames 130L and 130R are connected to the left and right vertical main frames 110L and 110R. fixed against Conversely, by loosening the fastening bolts 117L and 117R, the tightening of the vertical frame 130Y of the upper body support frames 130L and 130R by the adjustment members 115L and 115R is loosened, and the left and right upper body support frames 130L and 130R are moved to the left and right vertical main frames 110L. , 110R in the vertical and horizontal directions.

5 and 6, in walker 100 according to the present embodiment, left and right vertical main frames 110L and 110R are arranged vertically with respect to left and right connecting members 105L and 105R, respectively, as described above. It is possible to adjust the height in the direction. In the present embodiment, the left and right vertical main frames 110L and 110R are connected by moving the adjustment levers 111 and 111 attached to the left and right main frames 107 that connect the left and right connecting members 105L and 105R to the center. The height relative to members 105L and 105R can be changed.

As described above, in the walker 100 according to the present embodiment, the left and right vertical main frames 110L and 110R are vertically adjusted in height with respect to the left and right connecting members 105L and 105R. It is possible to vertically adjust the height of each of the upper body support frames 130L and 130R with respect to the left and right vertical main frames 110L and 110R.

Further, referring to FIGS. 4, 7 and 8, in walker 100 according to the present embodiment, the distance between contact support members 131L and 131R can be adjusted. More specifically, the left and right upper body support frames 130L and 130R can rotate horizontally with respect to the left and right vertical main frames 110L and 110R.

More specifically, by loosening the fastening bolts 117L and 117R, the tightening of the vertical frame 130Y of the upper body support frames 130L and 130R by the adjustment members 115L and 115R is loosened, and the left and right upper body support frames 130L and 130R are moved to the left and right vertical main frames. It is made horizontally rotatable with respect to the frames 110L and 110R. For example, as shown in FIG. 7, rear portions of the contact support members 131L and 131R and the horizontal frame 130X are brought together, or as shown in FIG. can be Conversely, by tightening the fastening bolts 117L and 117R, the vertical frames 130Y of the left and right upper body support frames 130L and 130R are tightened by the adjusting members 115L and 115R, and the left and right upper body support frames 130L and 130R are moved at desired angles. are fixed to the vertical main frames 110L and 110R.

Furthermore, referring to FIGS. 3 and 9, the fixed positions of the contact support members 131L and 131R with respect to the upper body support frames 130L and 130R in the front-rear direction are adjustable. More specifically, the adjustment bolt 137 is removed to change the mounting position of the mounting frame 136L attached to the bottom of the contact support members 131L and 131R with respect to the horizontal frame 130X of the upper body support frames 130L and 130R. By fixing the mounting frame 136L to the horizontal frame 130X of the upper body support frames 130L and 130R with the adjusting bolts 137, the front and rear positions of the contact support members 131L and 131R are fixed at desired positions.

In the present embodiment, as shown in FIGS. 1 and 4, the left and right armrests 120L and 120R are configured such that the width of the rear portion in the left-right direction is wider than the width of the front portion in the left-right direction. be. This makes it easier for a user with a large physique and a user with a small physique to share the armrests 120L and 120R. This configuration is particularly convenient for the rollator 100 in which the height of the left and right armrests 120L and 120R, their lateral positions, and their longitudinal positions cannot be adjusted.

In this embodiment, the walker 100 is equipped with the left and right armrests 120L and 120R. good too.

As described above, the walker 100 according to the present embodiment is provided with the contact support members 131L and 131R above the armrests 120L and 120R. Even if the user's upper body is tilted to the left or right while using the walker 100, it can be supported from the left or right direction.
[Second embodiment]

As for the walker 100 of the first embodiment, as shown in FIG. 3, the upper surfaces of the contact support members 131L and 131R are formed in a concave shape when viewed from the side. The front and rear heights of the were to be configured similarly.

However, as shown in FIG. 10, it is preferable that the front portion 1321 of each of the abutment support members 131L and 131R is higher than the rear portion 1323 thereof. As a result, when the user starts using the walker 100, the user's upper body and sides can easily climb over the rear portions 1323 of the contact support members 131L and 131R, and the user's upper body during use of the walker 100. The armpits can be stably leaned against the front portions 1321 of the contact support members 131L and 131R.

The front portions 1321 of the contact support members 131L and 131R may be formed higher than the rear portions 1323 by about 25 mm as shown in FIG. Each front portion 1321 may be formed higher than the rear portion 1323 by about 50 mm.
[Third embodiment]

With regard to the walker 100 of the first embodiment, the contact support members 131L and 131R are provided above the armrests 120L and 120R. In addition, even if the user's upper body inclines to the left or right while using the walker 100, it can be supported from the left and right directions. In this embodiment, further, when there is an obstacle in the path of the walker 100 and the user stops without avoiding it, or when the user of the walker 100 stops due to fatigue from walking Thus, a configuration is realized that makes it easier for the user of the walker 100 to maintain a stopped state than in the past.

FIG. 12 is a perspective view from the rear side showing the overall configuration of the walker 100 according to the present embodiment when in use. FIG. 13 is a perspective view showing a knee pad 150 according to this embodiment. 12 and 13, in the present embodiment, knee pads 150 are attached to left and right main frames 107 (see FIG. 2). When in use, the knee pads 150 are placed in front of or below the left and right knees of the user, and support the user's knees from the lower front to the upper rear when the user's knees are slightly bent. It is something to do.

As a result, the user's upper body and armpits are supported upward by the contact support members 131L and 131R, while the user's knees are supported by the knee pads 150. It can be supported from the lower front to the upper rear. In other words, the user standing still bends his knees, that is, with his knees protruding forward, and while his upper body and armpits are supported from below by the contact support members 131L and 131R, his knees are pushed forward and downward. Supported. That is, the walker 100 according to the present embodiment can reduce fatigue of the user who is standing still. In particular, it is possible to efficiently support the armpits and knees of elderly people who have difficulty fully stretching their knees.

As described above, the knee pads 150 may support the user's knees from the lower front to the upper rear, or may simply support the knees from the front to the rear.

Also, it is preferable that the knee pads 150 can be retracted to another position during walking. For example, as shown in FIG. 14 , knee pads 150 may be configured to be rotatable upward about left and right main frames 107 . As a result, the knee pads 150 are less likely to interfere with walking.
[Fourth embodiment]

As shown in FIGS. 15 and 16, the knee pad 160 preferably has raised portions 160L and 160R formed in the left and right ends thereof. As a result, it is possible to reduce the possibility that the user's knees will protrude from the left and right sides of the knee pads 160 when the user stands still with his/her knees bent.
[Fifth Embodiment]

Further, as shown in FIGS. 17 and 18, the knee pad 170 has vertical raised portions 170L and 170R formed at the left and right ends thereof, and also has a vertical raised portion 170M formed at the left and right central portions. It is preferable that As a result, when the user stands still with his or her knees bent, the left knee may protrude from the contact portion 171L between the raised portion 170L at the left end of the knee pad 170 and the raised portion 170M at the center. It is possible to reduce the possibility that the right knee protrudes from the contact portion 171R between the right raised portion 170R and the central raised portion 170M of the knee pad 170. In other words, the user can maintain a more stable and comfortable standing position.
[Sixth Embodiment]

As in the third and fourth embodiments, one knee pad 150, 160, 170 may support the left and right knees of the user. A left knee pad for supporting the knee of the foot and a right knee pad for supporting the right knee may be mounted separately.

Also, the knee pads may be supported by members other than the left and right main frames 107 . For example, the knee pads may be supported by connecting members 105L, 105R and vertical main frames 110L, 110R.
[Seventh embodiment]

In the above embodiment, the front wheels 101L and 101R that can turn in the left and right direction and the rear wheels 102L and 102R that cannot turn in the left and right direction are provided, but the configuration is not limited to this. In this embodiment, as shown in FIGS. 19 to 26, the walker 200 has front wheels 201L and 201R that can turn, rear wheels 203L and 203R that can turn, and center wheels 202L and 202R that cannot turn. It has

The walker 200 according to the present embodiment includes left and right front wheels 201L and 201R, left and right center wheels 202L and 202R, left and right rear wheels 203L and 203R, and leg portions that pivotally support the wheels. and frame 204 . More specifically, the leg frame 204 is formed in a U-shaped streamlined shape in plan view, and front wheels 201L and 201R are rotatably attached to the left and right of the front portion of the leg frame 204. Central wheels 202L and 202R are non-rotatably attached to the left and right of the central portion, and rear wheels 203L and 203R are attached to the left and right of the rear portion of the leg frame 204 so as to be able to rotate.

In particular, in the present embodiment, as shown in FIG. 27, the left and right center wheels 202L and 202R that cannot turn are arranged to form a circle Y drawn by a rotation diameter X that connects the right front wheel 201R and the left rear wheel 203L. It is configured to be located inside. In the present embodiment, the left and right central wheels 202L and 202R are located outside the left and right front wheels 201L and 201R in the left and right direction of the walker 200, and further in the walker 200 than the left and right rear wheels 203L and 203R. It is arranged outside in the horizontal direction.

By locating the center wheels 202L and 202R in this manner, a closed loop formed by connecting the ground contact points of the front wheels 201L and 201R, the center wheels 202L and 202R, and the rear wheels 203L and 203R adjacent to each other in plan view. The size of the area (so-called base of support) can be secured advantageously. As a result, the user supported by the left and right upper body support frames 230L, 230R can use the rollator 200 with a more stable center of gravity position.

19 to 26, of the leg frame 204, between the front wheels 201L, 201R and the center wheels 202L, 202R, left and right protrusions 204Y are formed. The left and right vertical main frames 210L, 210R are inserted through the protrusions 204Y, 204Y. Each of the left and right vertical main frames 210L and 210R can be inserted into the leg frame 204 by an adjustable amount, thereby adjusting the height of an armrest and a handle, which will be described later.

An upper frame 205 is attached to the upper end of each of the left and right vertical main frames 210L and 210R. The upper frame 205 is also formed in a substantially U-shaped streamlined shape in plan view. Left and right armrests 220L and 220R are provided on the left and right rear portions of the upper frame 205 . Handles 212 are attached to front portions of the left and right armrests 220L and 220R so as to face forward. It should be noted that the heights of armrests and handlebars, which will be described later, may be adjustable by configuring the amount of insertion of the left and right vertical main frames 210L and 210R into the upper frame 205 so as to be adjustable.

Left and right upper body support frames 230L and 230R are attached to the left and right armrests 220L and 220R, respectively. The left and right upper body support frames 230L and 230R according to the present embodiment are formed in a substantially rectangular shape elongated in the front-rear direction when viewed from the side. Thus, in this embodiment, the upper body support frame is a member that also serves as a contact support member.

As shown in FIGS. 23 and 24, in the present embodiment as well, each of the left and right upper body support frames 230L and 230R has a concave upper surface in use when viewed from the side. As a result, the sides of the user can be stably supported by the upper surfaces of the left and right upper body support frames 230L and 230R.

Thus, in the walker 200 according to the present embodiment as well, the support frames 230L and 230R are provided above the armrests 220L and 220R. Also, even if the upper half of the user's body inclines to the left or right while using the walker 200, it can be supported from the left and right directions.

Further, referring to FIG. 27, the left and right center wheels 202L and 202R that cannot turn are arranged at positions overlapping with the left and right upper body support frames 230L and 230R, respectively, in the front-rear direction. More specifically, the rear ends of the left and right central wheels 202L, 202R that cannot turn or the ground contact positions are positioned forward of the respective rear ends of the left and right upper body support frames 230L, 230R in the front-rear direction. More preferably, the front ends of the unrotatable left and right center wheels 202L, 202R or ground contact positions are located behind the respective front ends of the left and right upper body support frames 230L, 230R in the front-rear direction, and the unrotatable left and right center wheels 202L, 202R The rear ends of the central wheels 202L and 202R or ground contact positions are positioned forward of the respective rear ends of the left and right upper body support frames 230L and 230R in the front-rear direction. This improves the lateral stability of the walker 200 .

In addition, for the user whose lateral movement is restricted by the left and right upper body support frames 230L, 230R, the risk of unintended turning is reduced, and the risk of overturning is reduced. In other words, when the walker 200 turns, since the left and right upper body support frames 230L, 230R are positioned on the axis connecting the central wheels 202L, 202R in a plan view, this axis serves as a turning axis and is stable around the user. You can move around. In this regard, referring to FIG. 3, similarly to the walker 100, the rear wheels 102L and 102R that cannot turn are arranged at positions overlapping the left and right contact support members 131L and 131R in the front-rear direction. It is As a result, the lateral stability of the walker 100 is improved. In addition, for the user whose lateral movement is restricted by the left and right contact support members 131L and 131R, the risk of unintended turning is reduced, and the risk of overturning is similarly reduced.

In addition, in the present embodiment, the left and right center wheels 202L and 202R that cannot turn are arranged at positions behind the front ends of the left and right armrests 220L and 220R in the front-rear direction. As a result, the user can easily rotate the walker 200 with the axis connecting the central wheels 202L and 202R as the turning axis while applying weight to the left and right armrests 220L and 220R with or without gripping the handle 112. Can add turning power.

In addition, in the present embodiment, the front ends of the left and right armrests 220L, 220R are located forward of the front ends of the upper body support frames 230L, 202R. As a result, the user can walk stably while entrusting his own weight in the forward direction.

Further, in the present embodiment, the left and right upper body support frames 230L, 230R have their front portions pivotally supported by the left and right armrests 220L, 220R. Each of the left and right upper body support frames 230L and 230R is fixed in a position where its rear part is rotated upward as shown in FIG. 23 during use. On the other hand, for example, when the user stops using the walker 200 and sits on a chair or bed, or when the user stands up and starts using the walker 200, the left and right upper body support frames are arranged as shown in FIG. The respective rear portions of 230L and 230R are rotated downward. Then, as shown in FIG. 28, the left and right upper body support frames 230L and 230R are finally fixed in a lowered position where they do not protrude upward from the left and right armrests 220L and 220R.

As a result, for example, when the user transfers to the walker 200, the left and right armrests 220L, 220R are lowered to the low position, and the user moves the upper body support frames 230L, 230R to the left and right armrests 220L, 220R. It is possible to stably lean against it without being hindered, and then the armrests 220L and 220R can be lifted and placed in a walking posture. Further, when the armrests 220L and 220R are raised to be positioned in the walking posture, the upper body support frames 230L and 230R are moved upward in accordance with the armrests 220L and 220R being raised to lift the upper body (for example, the armpit area). Therefore, the user can be positioned in the walking posture more easily. As another usage configuration, when the walker 200 is raised and lowered, the user is supported by the upper body support frames 230L and 230R, thereby assisting the user in preventing the user from falling due to the raising and lowering of the walker 200. It allows the user to be safely transferred or placed in a walking position without human support.

In addition, it is preferable that the walker 200 is equipped with a human sensor around it.

Further, the walker 200 is preferably provided with guide lights. Then, when a person is detected in the vicinity of the walker 200 by the human sensor, the guide light is preferably turned on. This makes it easy for the user to grasp the position of the walker 200 even when the room is dark.

Moreover, it is preferable that the walker 200 is equipped with an electric motor. It is preferable that the electric motor drives the rear wheels 102L, 102R or the center wheels 202L, 202R that cannot turn. In this case, the walker 200 preferably has a self-running function by having a camera and a communication device. For example, the walker 200 preferably has a function of automatically traveling to a charger when the remaining battery level is low.

According to the present invention, the user can be maintained in a stable walking posture by supporting the user's upper body with the left and right armrests 220L and 220R. In this respect, the user can walk stably using the rollator 200 in a state in which overturning in the left-right direction is reduced. On the other hand, when the user uses the rollator to move forward, the walking posture is corrected to the upright direction. If there is a difference, the walker 200 may move obliquely without the user's intention. Therefore, by installing an electric motor, for example, it becomes possible to independently control the number of revolutions of the rear wheels 102L, 102R or the center wheels 202L, 202R that cannot turn, thereby suppressing the occurrence of skew. It can advance better in the forward direction.
[summary]

In the above embodiment, at least one armrest 120L, 120R and left and right support members 131L, 131R ( 130L, 130R) are provided. Front portions 1311, 1321, 1331 and rear portions 1313, 1323, 1333 of each of the left and right support members 131L, 131R are formed higher than central portions 1312, 1322, 1332 thereof.

Preferably, each of the left and right support members 132L, 132R, 133L, 133R is formed so that the front portions 1321, 1331 are higher than the rear portions 1323, 1333, respectively.

Preferably, the left and right support members 131L and 131R are configured such that their positions in the front-rear direction can be adjusted.

Preferably, the at least one armrest 120L, 120R includes left and right armrests 120L, 120R. Each of the left and right armrests 120L, 120R is formed such that the width in the left-right direction of the rear portion is wider than the width in the left-right direction of the front portion.

Further, in the above embodiment, at least one armrest, left and right abutment support members arranged above the at least one armrest for supporting the upper body of the user from the left and right directions, and left and right fixed rings. , a front swing wheel positioned forward of the fixed wheel, and left and right rear swing wheels positioned rearward of the fixed wheel. In a plan view, each of the left and right fixed rings and each of the left and right contact support members are arranged at positions where at least a portion thereof overlaps.

Preferably, at the base of support formed by the fixed wheel and the swivel wheel with respect to the ground plane, the armrest is located within the base of support.

Preferably, the armrest is positioned between the ground contact position of the fixed wheel and the ground contact position of the swivel wheel in the longitudinal direction of the walker.

Preferably, the armrest is positioned between the ground contact position of the fixed wheel and the ground contact position of the swing wheel in the horizontal direction of the walker.

Preferably, the abutment support member is located in the base of support plane formed by the fixed ring and the slewing ring with respect to the ground plane.

Preferably, the abutment support member is positioned between the ground contact position of the fixed wheel and the ground contact position of the slewing wheel in the longitudinal direction of the walker.

Preferably, the abutment support member is positioned between the ground contact position of the fixed wheel and the ground contact position of the slewing wheel in the horizontal direction of the walker.

Preferably, the pedestrian has a right front turning wheel and a left front turning wheel, the left and right fixed wheels having a longer wheel width than the left and right front turning wheels, and the left and right rear turning wheels having a larger wheel width than the left and right front turning wheels. longer than the wheel width. Further, the left and right fixed wheels are positioned within a turning circle whose turning diameter is the distance between the right front turning wheel and the left rear turning wheel.

Preferably the armrest is height adjustable. The support member is movable below the armrest.

Preferably, the walker includes a human sensor and a guide light that lights up when a person is detected.

Preferably, the fixed wheel is driven by the driving force of an electric motor.

Preferably, the rollator has a self-running function.

Preferably, the walker has a function of automatically traveling to the charger when the battery is low.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

100: Walker 101L, 101R: Front wheels 102L, 102R: Rear wheels 103L, 103R: Front leg frames 104L, 104R: Rear leg frames 105L, 105R: Connecting members 106L, 106R: Folding links 107: Left and right main frames 110L, 110R: Vertical Main frame 111: Adjustment lever 112: Handle 114: Brake levers 115L, 115R: Adjustment members 117L, 117R: Fastening bolts 120L, 120R: Armrests 130L, 130R: Upper body support frame 130X: Horizontal frame 130Y: Vertical frames 131L, 131R: This Contact support members 132L, 132R: Contact support members 133L, 133R: Contact support member 136L: Mounting frame 150: Knee pads 160: Knee pads 160L, 160R: Raised portions 170: Knee pads 170L, 170M: Raised portions 171L, 171R : Contact portion 1311 : Front portion 1312 : Central portion 1313 : Rear portion 1321 : Front portion 1322 : Central portion 1323 : Rear portion 1331 : Front portion 1332 : Central portion 1333 : Rear portion 200 : Walker 201L : Front wheel 201R : Front wheel 202L : Center Wheel 202R: Central wheel 203L: Rear wheel 203R: Rear wheel 204: Leg frame 204Y: Convex portion 205: Upper frame 210L: Vertical main frame 210R: Vertical main frame 212: Handle 220L: Armrest 220R: Armrest 230L: Upper body support frame (Abutment support member)
230R: upper body support frame (contact support member)
X: Rotational diameter Y: Circle

Claims (4)

at least one armrest;
left and right support members arranged above the at least one armrest for supporting the upper body of the user from the left and right;
swivelable left and right front wheels,
Left and right rear wheels that can turn,
With left and right central wheels that cannot be turned,
The left center wheel is located to the left of the left front wheel and left rear wheel,
The right center wheel is positioned to the right of the right front and right rear wheels,
The distance between the left and right central wheels is configured to be shorter than the rotation diameter connecting the right front wheel and the left rear wheel,
Each of the left and right central wheels is attached so as to overlap each of the left and right support members in a position in the front-rear direction,
In plan view, the central wheel, the armrest, and the support member are arranged in this order from the outside to the center of the circle drawn by the rotation diameter,
The walker, wherein each of the left and right support members has a front portion and a rear portion higher than a central portion. The rollator according to claim 1 , wherein each of the left and right support members has a front portion higher than a rear portion. The rollator according to claim 1 or 2 , wherein the left and right support members are configured such that their positions in the front-rear direction are adjustable. the at least one armrest includes left and right armrests;
The rollator according to any one of claims 1 to 3 , wherein each of the left and right armrests is formed such that the width in the left-right direction of the rear portion is wider than the width in the left-right direction of the front portion.

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