KR100995241B1 - Wheel Chair Having Assistant Braking Device - Google Patents

Abstract

Disclosed is a wheelchair having an auxiliary braking device capable of improving the braking of a wheelchair. In the wheelchair 100, the main wheel 150 is provided on each side, the engaging hole 162, the projection 154, the projection 154 is installed on one side of the rim 152 constituting the main wheel 150 is inserted 162 ) Is formed, the friction member 161, the coupling protrusion 163 is installed in the opposite direction of the direction in which the projection 154 is inserted, the coupling groove 165 is inserted into the coupling protrusion 163 of the friction member 161 is A connecting protrusion (16) formed in the connecting member 164 and the connecting groove 166 formed with a connecting groove 166 spaced apart from the coupling groove 165 by a predetermined distance in a direction opposite to the direction in which the coupling protrusion 163 is inserted ( 168 is installed, and includes a braking handle 167 installed on the hub 156 constituting the main wheel 150 to be rotatable based on the main wheel 150, the friction member 161 is a braking handle 167 Protruding or returning to the original position corresponding to the rotation direction of the). Accordingly, the braking force of the wheelchair 100 is increased by being combined with the frictional force of the main wheel 150.

Wheelchairs, Assistance, Braking System

Description

Wheel Chair with Assistant Braking Device

The present invention relates to a wheelchair, and more particularly, to a wheelchair having an auxiliary braking device capable of easily braking the wheelchair.

Wheelchairs are one of the mechanisms that make it easy for people with disabilities, patients, and the elderly to move around easily. Wheelchairs may be classified into manual wheelchairs for driving wheels by manpower and electric wheelchairs for driving wheels by using electric devices.

1 is a perspective view showing a conventional manual wheelchair structure.

Referring to FIG. 1, the conventional wheelchair 10 includes a main frame 20 that can be folded, and a seat 22 is installed to allow a user to sit in a horizontal direction of the main frame 20. The backrest frame 40 connected to the main frame 20 in a direction perpendicular to the main frame 20 is provided with a backrest 42 for supporting a user's back.

At both ends of the backrest frame 40, a handle 44 is provided to allow a guardian to drive a wheelchair. In addition, the main frame 20 is fixed to the shaft for connecting the main wheel 60 is fixed, the main wheel 60 is connected to each end of the shaft.

In addition, the rim 62 of each main wheel 60 is fixed to the hand rim 70 to allow the user to move the main wheel 60.

In addition, an auxiliary wheel 26 is installed at the front lower portion of the main frame 20 to maintain the posture of the wheelchair and to easily change the direction of the wheelchair.

The front frame 50 installed in front of the main frame 20 is provided with a footrest 52 for seating the user's two feet, the armrest frame 30 connected to the upper portion of the main frame 20 Armrest 32 is installed to allow the user to seat the arm.

On the left and right sides of the main frame 20, a main braking device 24 for braking the wheelchair 10 is provided.

Specifically, the main braking device 24 is fixedly installed on the left and right sides of the main frame 20, the braking piece is in contact with the tire of the main wheel corresponding to the position of the lever according to the user's operation, by the friction force The wheelchair 10 is braked by controlling the rotational speed of the main wheel 60.

However, in the conventional wheelchair 10, the user simultaneously operates the main wheel 60 for moving and turning the wheelchair 10 and the lever of the main braking device 24 for controlling the speed of the wheelchair 10. Since it is impossible to do so, there is a problem that it is difficult to simultaneously perform slip prevention and movement on a slope such as an uphill or downhill.

In addition, in the conventional wheelchair 10, slippage may occur when the frictional force of the road surface to which the main wheels 60 are in contact with each other is different, and thus, it is difficult to stop the wheelchair in a direction or position desired by the user.

Accordingly, an object of the present invention for overcoming the above disadvantages is to provide a wheelchair with an auxiliary braking device that can increase the braking force of the wheelchair and allow the user to easily brake the wheelchair.

Wheelchairs with auxiliary braking device according to an aspect of the present invention for achieving the above object of the present invention, in the wheelchair is provided with the main wheels on both sides, projections provided on one side of the rim constituting the main wheels And a coupling hole into which the protrusion is inserted, a friction member provided with a coupling protrusion in a direction opposite to the direction in which the protrusion is inserted, a coupling groove inserted into the coupling protrusion of the friction member, and a direction in which the coupling protrusion is inserted. In the opposite direction, the coupling member is spaced apart from the coupling groove by a predetermined distance, and a connecting member is formed and a connecting protrusion is inserted into the connecting groove. And a handle, wherein the friction member protrudes or returns to its original position corresponding to the rotational direction of the braking handle. It characterized. The friction member may be configured in the shape of a hook cross section. A plurality of the protrusions may be installed on one side of the rim at predetermined intervals, and the friction member, the connection member, and the connection protrusions installed at predetermined intervals along the circumference of the braking handle may be provided in the same number. The braking handle may include a braking handle hub connected to the main wheel hub of the main wheel, and at least one braking handle spoke connecting the braking handle hub to the inner surface of the braking handle.

According to the wheelchair equipped with the auxiliary braking device as described above, when the user rotates the braking handle of the auxiliary braking device by a predetermined angle in the clockwise direction, the connecting protrusion installed in the braking handle is in the same direction as the direction (that is, the clockwise direction). In accordance with the movement of the connecting projection, the connecting member connected to the connecting projection is moved in the same direction as the rotation direction. In addition, as the connection member moves, the friction member connected through the connection member and the coupling protrusion rotates by a predetermined angle with respect to the protrusion of the main wheel so that the friction member protrudes.

Therefore, the protruding friction member rubs with the ground to provide friction to the wheelchair and is combined with the friction of the main wheel to increase the braking force of the wheelchair.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. Like reference numerals are used for like elements in describing each drawing.

The terms first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it may be directly connected to or connected to that other component, but it may be understood that other components may be present in between. Should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that there is no other component in between.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

Hereinafter, with reference to the accompanying drawings in accordance with the present invention will be described in detail.

2 is an overall perspective view of a wheelchair having an auxiliary braking device according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of the auxiliary braking device shown in FIG. 2, and FIG. 4 is an auxiliary braking device shown in FIG. 2. It is a front view of each component which comprises.

2 to 4, the wheelchair 100 according to an embodiment of the present invention includes a main frame 110 formed in a rectangular parallelepiped shape, an armrest frame 120 installed on an upper portion of the main frame 110, and The back frame 130 connected to the main frame 110 in a vertical direction to the rear portion of the main frame 110 and the front frame protruded in front of the main frame 110 on the basis of the front (a) of the wheelchair ( 140).

The main frame 110 is provided with a seat 112 so that the user can sit on the top of the main frame 110, the main braking device 114 is installed on the left and right of the main frame 110, respectively.

Armrest frame 120 is installed armrest 122 to seat the user's arm.

The backrest frame 130 is provided with a backrest 132 to support the user's back, and the handle 134 is installed at both ends of the backrest frame 130 so that the guardian can easily drive the wheelchair behind the wheelchair. do.

The footrest 142 is installed below the footrest frame 140 so as to seat the user's foot.

The main frame 110 is provided with a shaft for connecting the main wheel 150, the main wheel 150 is rotatably installed at both ends of the shaft.

The main wheel 150 is the main wheel hub 156, one side is connected to the main wheel hub 156, the other side is the main wheel spoke (Spoke) 158 connected to the rim 152, and the main wheel spoke ( A rim 152 connected to the other side of the 158 and formed in a circular shape, and a tire installed on the rim 152.

One side of the rim 152 is provided with a plurality of protrusions 154 at predetermined intervals along the circumference of the rim 152.

The auxiliary brake device 160 is rotatably coupled to the main wheel hub 156 and the protrusion 154 of the main wheel 150 at a predetermined angle.

The auxiliary braking device 160 may include a friction member 161, a connection member 164, and a braking handle 167.

The friction member 161 may be formed of a rubber material having a high coefficient of friction, and may have a cross section having a hook shape. The lower portion of the friction member 161 is formed with a coupling hole 162 into which the protrusion 154 of the main wheel 150 is inserted, and a coupling protrusion 163 having a predetermined length is formed at one side (a surface facing the brake handle). It is installed in the vertical direction.

The engaging projection 163 of the friction member 161 is connected to the coupling groove 165 formed in the connection member 164. A coupling groove 165 into which the coupling protrusion 163 formed in the friction member 161 is inserted is formed in a direction perpendicular to the longitudinal direction of the connection member 164, and opposite to the coupling groove 165. The connection groove 166 into which the connection protrusion 168 formed in the braking handle 167 is inserted is formed at a predetermined distance apart.

A braking handle hub 169 rotatably connected to the main wheel hub 156 of the main wheel 150 is installed at the center of the braking handle 167, and the braking handle hub 169 is a braking handle spoke 170. It is connected to the inner surface of the braking handle 167 through.

In addition, the side surface of the braking handle 167 is provided with a connecting projection 168 at predetermined intervals along the circumference of the braking handle 167.

Here, the connecting protrusion 168 of the braking handle 167 and the protrusion 154 of the main wheel 150 are installed in opposite directions to each other, and are provided at the same number and at the same interval. In addition, the friction member 161 protrudes or returns to its original position corresponding to the rotational direction of the braking handle 167.

Auxiliary braking device 160 having a center coupled to the main wheel hub 156 of the main wheel 150 is rotatable independently of the main wheel 150, the length of the connecting member 164 according to the user's operation Rotate at the corresponding angle.

In addition, the rim 152 of the main wheel 150 is fixed to the hand rim 172 to allow the user to rotate the main wheel 150 through the connecting table 174.

FIG. 5 is a conceptual diagram for describing an operation of the auxiliary braking apparatus illustrated in FIG. 2.

Referring to FIG. 5, a wheelchair 100 according to an embodiment of the present invention may be implemented by a user in a first direction (see I in FIG. 5) (ie, in a clockwise direction) of the braking handle 167 of the auxiliary braking device 160. If the rotation by a predetermined angle, the connecting projection 168 installed on the braking handle 167 moves in the same direction as the first direction, and the connecting member 164 connected to the connecting projection 168 in accordance with the movement of the connecting projection 168. ) Moves in the same direction as the rotation direction. In addition, as the connection member 164 moves, the friction member 161 connected through the connection member 164 and the coupling protrusion 163 rotates by a predetermined angle with respect to the protrusion 154 of the main wheel 150. As a result, the friction member 161 protrudes.

The protruding friction member 161 is friction with the ground to provide a friction force to the wheelchair 100 and is combined with the friction force of the main wheel 150 to increase the braking force of the wheelchair 100.

Alternatively, when the user rotates the braking handle 167 of the auxiliary braking device 160 by a predetermined angle in the second direction (see II of FIG. 5) (that is, counterclockwise), the protruding friction member 161 is the main wheel. The main wheel 150 can move by being drawn between the 150 and the braking handle 167 to remove the frictional force with the road surface.

While the invention has been described above, those skilled in the art can understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. There will be.

1 is a perspective view showing a conventional manual wheelchair structure.

2 is a perspective view of a wheelchair with an auxiliary braking device according to an embodiment of the present invention.

3 is an exploded perspective view of the auxiliary braking device illustrated in FIG. 2.

4 is a front view of each component constituting the auxiliary braking device shown in FIG.

FIG. 5 is a conceptual diagram for describing an operation of the auxiliary braking apparatus illustrated in FIG. 2.

<Explanation of symbols for main parts of the drawings>

100: wheelchair 150: main wheel

152: Rim 154: Projection

161: friction member 162: coupling hole

163: engaging projection 164: connecting member

165: coupling groove 166: connection groove

167: braking handle 168: connecting projection

Claims (4)

In wheelchairs with main wheels on each side, A protrusion 154 installed on one side of the rim 152 constituting the main wheel 150; A coupling hole 162 into which the protrusion 154 is inserted is formed, and a coupling protrusion 163 is installed in a direction opposite to the direction in which the protrusion 154 is inserted, and a friction member 161 having a hook-shaped cross section. ; A coupling groove 165 is formed to be inserted into the coupling protrusion 163 of the friction member 161 and is spaced apart from the coupling groove 165 by a predetermined distance in a direction opposite to the direction in which the coupling protrusion 163 is inserted. A connection member 164 having a groove 166 formed therein; And A connecting handle 167 inserted into the connecting groove 166 is installed, and the braking handle 167 installed to be rotatable based on the main wheel 150 in the hub 156 constituting the main wheel 150. It includes, wherein the friction member 161 is a wheelchair with a secondary braking device, characterized in that protruding or returning to the original position corresponding to the rotation direction of the braking handle (167). delete The method of claim 1, wherein the protrusion 154, A plurality of connection protrusions are installed on one side of the rim 152 at predetermined intervals, and are provided at predetermined intervals along a circumference of the friction member 161, the connecting member 164, and the braking handle 167. Wheelchairs with auxiliary braking device, characterized in that 168 is installed in the same number. The method of claim 1, wherein the braking handle 167, At least one braking handle spoke that connects the braking handle hub 169 connected to the main wheel hub 156 of the main wheel 150 and the inner surface of the braking handle hub 169 and the braking handle 167 ( A wheelchair with an auxiliary braking device, comprising: 170).

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