KR102043282B1 - Rollator - Google Patents

Abstract

The present invention relates to a walking aiding device, which comprises: a support fixture; a rim member; at least one support roller and a pressure roller rotatably fastened to the rim member, respectively; a wheel supported by the pressure roller and the support roller and disposed to be relatively rotatable with respect to the rim member; and a pressing structure which connects the support fixture to the rim member and elastically supports the pressure roller to be in close contact with the wheel to generate rolling resistance which inhibits rotation of the wheel.

Description

Walking aids {Rollator}

The present invention relates to a walking aid.

The main means of transportation for the elderly is walking and walking becomes more important means of getting older. However, the walking ability of the elderly gradually decreases due to the deterioration of sensory function, cognitive function, and athletic ability, and the elderly suffer from various limitations due to difficulty in walking independently. The walking aid supports the walking of the elderly who are unable to walk independently, thereby increasing the freedom of movement and maintaining health by strengthening endurance, strength, and prevention of cardiovascular diseases.

Various types of walking aids, such as walking sticks, walking aids, and wheelchairs, are used according to the degree of walking discomfort. The walking aid is a product configured to be used by a user who is limited to the elderly or the behavior and can be classified into a passive walking aid that the user carries directly and an active walking aid that is electrically driven. The most basic walking aid is made of a square frame and has a structure for supporting the user to walk while supporting the weight of the body with both hands, and in addition to the walking aid having a wheel-coupled walking aid or chair is used.

However, these walking aids do not reflect the user's characteristics such as physical changes, judgment and cognitive resistance of the elderly, so they have problems such as lack of cognition about the structure and function of walking aids and immaturity of operation. As a result, it has been found that people have a negative perception of recycled products used by people with disabilities or the elderly, and frustration with an aged body. In addition, there is a problem that is difficult to use in stairs or vehicles due to obstacles in utilization, difficult to pass the revolving door or front door, there is a risk of overturning when climbing up and down slopes, and it is difficult to go out in the rain. In addition, long-term use may cause upper extremity injuries such as tendonitis, osteoarthritis, and carpal tunnel syndrome, and even short-term use may cause pain in the lower back, shoulders and arms due to ground shock and weight support by the upper extremity. It has been known through several studies that it works.

The purpose of the walking aid is to help a normal walk of a user who is uncomfortable to walk. The walking aid should follow a normal walking pattern. By the way, when looking at the existing product, the walking aid without wheels must walk while the user lifts and releases the device, and the type with wheels pushes the device while supporting the body in the direction of gravity. Specifically, when using the type of walking aids with wheels, the body should be tilted forward to maintain weight movement so that the center of gravity of the body is in the direction of progression. By bending, the center of gravity is distributed to the rear, which causes the user to be in a position that does not naturally depend on the weight of the device and puts a heavy load on the upper limbs. In order to solve this problem, a hand brake device is used, but there is also a risk of overturning due to power and sudden braking, and durability of the friction brake is reduced.

Many studies have suggested new improvement models based on these problems, but there are still no fundamental solutions to structural, functional, psychological, and utilization problems.

United States Patent Application Publication No. 9,961,973 (Registration Date: 2018.05.08) United States Patent Application Publication No. 9,089,194 (Registration Date: July 28, 2015)

The present invention was created to solve the problems described above, the problem to be solved by the present invention is a simple structure and an appropriate rotational load is added to the wheel to naturally support the weight in the direction of pushing the walking aid in an upright walking posture It is made to provide a walking aid that does not take an independent weight load on the upper limbs.

In addition, another problem to be solved by the present invention is that the rotational load is automatically adjusted against the reaction force of the support surface on the flat, downhill, uphill, so that the user can continue to walk safely and comfortable without any optional action, stairs Is to provide a walking aid configured to restrain the rotation of the wheel can be used as a walking stick.

The walking aid according to the embodiment of the present invention is a support roller, a rim member, a pressure roller and at least one support roller rotatably fastened to the rim member, respectively, supported by the pressure roller and the support roller and the rim member. A wheel disposed in a state of being rotatable relative to, and the support is connected to the rim member, and is configured to elastically support the pressure roller to be in close contact with the wheel to generate rolling resistance that inhibits rotation of the wheel. Include a structure. The support is elastically connected to the rim member such that relative displacement with respect to the rim member may occur by reaction forces by the support surface supporting the wheel. The pressing structure is configured to automatically adjust the rolling resistance in inverse proportion to the magnitude of the reaction force.

The support may be elastically fastened to the rim member such that relative displacement with respect to the rim member may occur, and the pressing structure may be applied to the rim member caused by an increase in reaction force by a support surface supporting the wheel. The magnitude of the elastic force supporting the pressure roller in response to the relative displacement of the support relative to the support may be varied and thus vary the magnitude of the rolling resistance.

When the support is subjected to relative displacement with respect to the rim member in a direction approaching the support surface, the pressing structure can be configured to reduce the magnitude of the rolling resistance.

The pressing structure is fastened to the rim member and at one end of the guide rod (pressure rod) is movably fastened toward the inner surface of the wheel (guide rod), the support is fastened to the guide rod in a state spaced apart from the pressure roller Member, a movable member movably fastened to the guide rod in a state disposed between the pressing roller and the supporting member, a first elastic supporting member elastically supporting the movable member with respect to the supporting member, and the movable It may include a second elastic support member for elastically supporting the pressure roller relative to the member.

The pressing structure may further include a pivoting member fastened to the rim member to enable pivoting behavior, and a connection member connecting the support and the pivoting member. The connecting member and the pivoting member may be fastened to each other so that the pivoting behavior of the pivoting member is achieved by linear movement of the support, and the pivoting member and the movable member are pivoted by the pivoting behavior of the pivoting member. The moving members may be fastened to each other so that linear movement is performed.

When the support member makes a relative linear movement with respect to the rim member in a direction approaching the support surface supporting the wheel, the pivoting member may be configured such that the movable member is stretched by the first elastic support member and the second elastic support. The member may be configured to pivotally move the moving member to move in a relaxed direction.

The pressing structure may be configured such that the elastic force applied to the pressing roller by the first and second elastic support members can be adjusted.

According to one embodiment of the invention, the support member may be fastened to the guide rod so that the position in the longitudinal direction of the guide rod can be changed.

In addition, according to another embodiment of the present invention, the pressure roller is a roller body that is rotatably fastened to the support in the longitudinal direction of the guide rod, a rolling element rotatably fastened to the roller body, and the second elastic It may include a support that is elastically supported by the support member and fastened to the roller body so that the position can be changed in the longitudinal direction of the support rod.

At this time, the support member may be fastened to the guide rod so that the position in the longitudinal direction of the guide rod can be changed.

Walking aid according to another embodiment of the present invention may further include a brake structure that acts to selectively block the rotation of the wheel relative to the support.

The brake structure includes an operating lever fastened to the support so as to rotate between the braking release position and the braking position, and a movable rod fastened to the operating lever to move toward the wheel when the operating lever rotates to the braking position. And a return spring that elastically supports the movable rod to move the movable rod away from the wheel when the manipulation lever rotates to the braking release position.

The brake structure may further include a friction member fastened to the tip of the movable rod and configured to be in close contact with the surface of the wheel in response to the movement of the movable rod.

The walking aid according to another embodiment of the present invention may further include a handle which is fastened to the upper end of the support, and the handle may be fastened to the support to adjust the height.

According to the present invention, since the weight is naturally supported in the direction of pushing the walking aid in the upright walking posture, independent weight load is not applied to the upper limbs. In addition, according to the present invention, since the rolling resistance by the pressure roller is automatically adjusted according to the change of the reaction force of the support surface on the flat, downhill, uphill, safe and comfortable upright walking can be made even if the user does not perform a specific selective action. . In addition, the brake structure can be restrained rotation of the wheel can be used as a stick in the staircase.

1 is a perspective view of a walking aid according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
3 is an exploded perspective view of an upper support of a walking aid and a handle fastened thereto according to an embodiment of the present invention.
4 is a perspective view of a wheel, a rim member, and a pressing structure of a walking aid according to an embodiment of the present invention.
5 is an exploded perspective view of the wheel, rim member and the pressing structure of the walking aid according to an embodiment of the present invention.
6 is a partial perspective view of the rim member and the pressing structure of the walking aid according to an embodiment of the present invention.
7 is a partial cross-sectional view of the rim member and the pressing structure of the walking aid according to an embodiment of the present invention.
8 is a view showing a pressing structure of the walking aid according to an embodiment of the present invention.
9 is a view showing a state in which the elastic force supporting the pressure roller is reduced by the action of the pressing structure of the walking aid according to an embodiment of the present invention.
10 is a view for explaining the adjustment of the elastic force for supporting the pressure roller by the pressing structure of the walking aid according to an embodiment of the present invention.
11 is a partial cross-sectional perspective view showing a brake structure of a walking aid according to an embodiment of the present invention.
12 is a partial cross-sectional perspective view showing a case in which the brake structure of the walking aid according to the embodiment of the present invention is in a breaking state to block the rotation of the wheel.

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

1 and 2, the support 10 may have an overall long rod shape and form a longitudinal axis. For example, the support 10 may include an upper support 11, a lower support 12, and an intermediate support 13 interposed between the upper support 11 and the lower support 12. 1 and 2, the upper support 11 may be fastened to the upper end of the intermediate support 13, and the lower support 12 may be fastened to the lower end of the intermediate support 13. At this time, the upper support 11, the lower support 12 and the intermediate support 13 may have the form of a hollow tube for weight reduction, installation of other components, and the like.

The handle 20 may be fastened to the upper support 11. The handle 20 may be formed in a shape that the user can hold by hand. The handle 20 may include a handle portion 21 formed to be held by a hand, and a fastening portion 22 extending from the handle portion 21 and fastened to the upper support 11. Handle 20 may be fastened to the height adjustable to the support 10 for the user's convenience. For example, referring to FIG. 3, a plurality of fastening holes 221 arranged in the vertical direction may be formed in the fastening part 22, and a corresponding fastening hole 111 may be formed in the upper support 11. Can be. After adjusting the height of any one of the fastening holes 221 of the fastening part 22 with the fastening hole 111 of the upper support 11 in a state where the upper support 11 is inserted into the fastening part 22, the fixing pin ( The fastening member 22 and the upper support 11 can be fixed by fixing the fastening member 24 to the end of the fastening pin 23 by passing the 23 through both fastening holes 221 and 111. At this time, the height of the handle 20 can be adjusted by selecting any one of the plurality of fastening holes 221 of the fastening part 22.

The wheel 30 is formed to be rotatable during use, for example, the wheel 30 may include a circular rim 31 and a tire 32 fastened thereto. The tire 32 may be formed of a rubber material to enable stable grounding during use.

The rim member 40 may be disposed inside the wheel 30, and the pressure roller 50 and the at least one support roller 60 are rotatably fastened to the rim member 40. The wheel 30 is supported by the pressure roller 50 and the support roller 60 so as to be disposed relative to the rim member 40. The support roller 60 and the pressure roller 50 may be arranged to support the inner surface of the wheel 30 so that the wheel 30 may be rotated relative to the rim member 40. The inner circumferential surface of the circular rim 31 may be formed with a support surface 311 on which the pressure roller 50 and the support roller 60 are supported.

The pressurized structure 70 connects the support 10 to the rim member 40. At this time, the pressing structure 70 connects the support 10 and the rim member 40 so that the support 10 is elastically supported with respect to the rim member 40. On the other hand, the pressing structure 70 acts so that the rolling resistance that inhibits the rotation of the wheel 30 is generated by elastically supporting the pressing roller 50 in close contact with the wheel 30.

The support 10 is elastically fastened to the rim member 40 so that a relative displacement with respect to the rim member 40 can occur, and the pressing structure 70 has a reaction force by the support surface for supporting the wheel 30. It is configured to change the magnitude of the elastic force supporting the pressure roller 50 in response to the relative displacement of the support 10 with respect to the rim member 40 caused by the increase, and thus the magnitude of the rolling resistance. When the support 10 is subjected to relative displacement with respect to the rim member 40 in a direction approaching the support surface, the pressing structure 70 is configured to reduce the magnitude of rolling resistance. Hereinafter, the configuration and operation of the pressing structure 70 to secure such a function will be described in detail with reference to the accompanying drawings.

The pressing structure 70 may be disposed in the inner space of the wheel 30 together with the rim member 40 as shown in FIG. 4, and covers both sides of the rim member 40 as shown in FIG. 1. 33 may be coupled to surround a space in which the rim member 40 and the press structure 70 are disposed. In this case, the rim member 40 may have a substantially annular shape and may include a fastening portion 41 for fastening the cover 33. The cover 33 may be fastened to the fastening part 41 by a fastening member such as a bolt 34 so that the cover 33 may be fastened to the rim member 40.

The pressing structure 70 acts to elastically support the support 10 against the rim member 40 while elastically supporting the pressing roller 50 to produce rolling resistance that inhibits rotation of the wheel 30. do.

The pressurizing structure 70 may include a pivoting member 71 fastened to the rim member 40 to enable pivoting behavior, and a connecting member 72 connecting the support 10 and the pivoting member 71. have. Referring to FIG. 4, the pivoting member 71 is pivotally fastened to the rim member 40 such that the pivoting motion can be made about the pivot axis PA. 4 to 7, the pivoting member 71 may be constituted by a pair of members having an arm shape facing each other, and one end of the pivoting member 71 is fastened in close contact with each other. The other end is fixed to each other by the member 91 and the other end may be pivotally fastened to the fastening protrusion 42 of the rim member 40 through the fastening hole 711. Fastening holes 712 are formed at opposite ends of the pair of pivoting members 71, respectively, and the fastening members 91 are fastened to the fastening holes 712 so that the pair of pivoting members 71 are mutually free. In this case, the support roller 60 may be further fastened to the fastening protrusion 42. The pivoting member 71 may be fastened to the rim member 40 pivotally about the pivot axis PA by such a connection.

The connecting member 72 connects the support 10 and the pivoting member 71. The connecting member 72 and the pivoting member 71 are fastened to each other so that the pivoting behavior of the pivoting member 71 is achieved by the linear movement of the support 10. At this time, the connection member 72 may be fastened to the support 10 to move linearly with the support 10, it is arranged to allow a linear movement in the rim member (40). Specifically, the yoke member 14 fastened to the lower end of the lower support 12 may be fastened, and the connection member 72 is fastened by a fastening member 92 such as a bolt through the coupling part 721. It may be fixed to the yoke member 14. As shown in FIG. 5, the fastening portions 92 may be provided as a pair facing each other. In addition, the connection member 72 may include a through hole 722 formed in the up and down direction, and a pair of guide rods 73 fixed to the rim member 40 are inserted into the through hole 722 so that the guide rod ( 73 can be movably fastened. Threads may be formed at the upper end and the lower end of the guide rod 73 and may be fixed to the rim member 40 by bolts 93 and 94 coupled to the threads. Here, the rim member 40 may include fastening grooves 43 and 44 for fastening the guide rod 73, and upper and lower portions of the guide rod 73 are fastened to the fastening grooves 43 and 44, respectively. The bolts 93 and 94 may be fastened in the inserted state.

On the other hand, in order to make the pivoting behavior of the pivoting member 71 according to the linear movement of the connecting member 72, the connecting member 72 and the pivoting member 71 may be fastened to each other in a projection and a long hole structure. Specifically, fastening protrusions 723 may be formed on both side surfaces of the connection member 72, and a long hole 713 may be formed in the pivoting member 71 to which the fastening protrusion 723 is inserted. 8 and 9, when the linear movement of the connecting member 72, the fastening protrusion 723 of the connecting member 72 presses a surface forming the long hole 713 of the pivoting member 71 to pivot. The pivoting behavior of the member 71 is made, and the position of the fastening protrusion 723 in the long hole 713 is changed at the pivoting behavior of the pivoting member 71.

The pressing structure 70 is configured to elastically support the pressing roller 50 and is configured such that the elastic force supporting the pressing roller 50 is changed according to the pivoting behavior of the pivoting member 71. The lower end of the guide rod 74 may be fixed to the rim member 40. For example, the lower end of the guide rod 74 may be inserted into the fastening groove 45 formed in the rim member 40 and fixed to the rim member 40 by the nut 95. The pressure roller 50 may have a roller body 52 to which the rolling element 51 is rotatably fastened, and a fastening hole 521 in which an upper portion of the guide rod 74 is formed in the roller body 52. It can be inserted into the moveable.

The support member 75 is fastened to the guide rod 74. The supporting member 75 is formed to maintain the fastening position after being fastened to the guide rod 74, and may be formed to move along the longitudinal direction of the guide rod 74 if necessary. For example, the support member 75 may be fastened to the guide rod 74 through screwing.

The moving member 76 is disposed on the pressure roller 50 and the support member 75. The moving member 76 is fastened to the guide rod 74 so that the movement is possible. For example, the moving member 76 includes a fastening hole 761, and the guide rod 74 is movably inserted into the fastening hole 761.

The first elastic support member 77 elastically supports the movable member 76 with respect to the support member 75, and the second elastic support member 78 applies the pressure roller 50 with respect to the movable member 76. Support elastically. The first elastic support member 77 may be disposed such that the lower end and the upper end thereof contact the support member 75 and the movable member 76 while being elastically compressed, and the second elastic support member 78 may be The lower end and the upper end may be disposed to contact the moving member 76 and the pressure roller 50 in an elastically compressed state. The roller body 52 of the pressure roller 50 may be provided with a support portion 53 on which the second elastic support member 78 is supported. In this case, the first and second elastic support members 77 and 78 may be formed as coil springs. The compression state of the first and second elastic support members 77 and 78 changes depending on the position of the guide rod 74 in the longitudinal direction of the moving member 76, wherein the first and second elastic support members 77 are changed. , 78 is configured to always maintain an elastically compressed state over the entire movement displacement of the moving member 76.

At this time, the pressure roller 50 is installed to be movable relative to the rim member 40 and the guide rod 74. For example, the roller body 52 of the pressing roller 50 may include a fastening hole 521, and an upper end portion of the guide rod 74 is inserted into the fastening hole 521 so as to be movable. In addition, the roller body 52 of the pressure roller 50 is inserted into the fastening groove 46 formed in the rim member 40 so as to be movable along the longitudinal direction (up and down direction in FIGS. 8 and 9) of the guide rod 74. Can be.

The pivoting member 71 and the movable member 76 are fastened to each other so that the linear movement of the movable member 76 is made by the pivoting behavior of the pivoting member 71. The movement member 76 and the pivoting member 71 may be fastened to each other in a projection and a long hole structure so that the linear movement of the movable member 76 is performed by the pivoting behavior of the pivoting member 71. In detail, fastening protrusions 762 may be formed at both sides of the moving member 76, and a long hole 714 into which the fastening protrusions 762 are inserted may be formed at the pivoting member 71.

At least one of the supporting member 75 and the supporting portion 53 of the pressure roller 50 may be configured such that the position may be varied in the longitudinal direction of the guide rod 74. For example, referring to FIG. 5, the support member 75 may include a through hole 751 formed in an up and down direction, and the guide rod 74 may pass through the through hole 751. The position of the support member 75 can be adjusted by fastening the member 75 and the guide rod 74 by screwing (for convenience of illustration, the thread is not explicitly shown in the figure). On the other hand, the support portion 53 of the pressure roller 50 may have a through hole 531 formed in the vertical direction, the roller body 52 of the pressure roller 50 may pass through the through hole 531. . In this case, the support 53 and the roller body 52 may be fastened by screwing, so that the position of the support 53 may be adjusted (for convenience of illustration, the thread is not explicitly shown in the drawing). 10 (a) is a view showing the coupling position of the support portion 53 and the support member 75 of the pressure roller 50 in the initial state, Figure 10 (b) is an elastic force applied to the pressure roller 50. The combination of the support 53 and the support member 75 of the pressure roller 50 in order to control the is a view showing a state moved in the direction of the arrow from the position of Figure 10 (a), respectively. Referring to FIG. 10, in the initial state, the support 53 of the pressure roller 50 is rotated to move in a direction away from the inner surface of the facing wheel 30 (downward in FIG. 10) and correspondingly to the support member 75. ) And by moving toward the pressure roller 50 to increase the elastic force applied to the pressure roller 50. As a result, rolling resistance applied to the wheel 30 by the pressure roller 50 may be increased. On the other hand, the elastic force applied to the pressure roller 50 can also be reduced by moving the support part 53 and the support member 75 of the pressure roller 50 in the opposite direction to FIG. At this time, both the support part 53 and the support member 75 of the pressure roller 50 are configured to be movable to adjust the elastic force so that the movable member is elastically supported by the first and second elastic support members 77 and 78. The pivoting member 71 fastened to the 76 may be adjusted to be approximately horizontal. Thereby, the operating stability of the walking aid can be improved.

On the other hand, in order to make the pivoting behavior of the pivoting member 71 according to the linear movement of the connecting member 72, the connecting member 72 and the pivoting member 71 may be fastened to each other in a projection and a long hole structure. Specifically, fastening protrusions 723 may be formed on both sides of the connection member 72, and the pivoting member 71 may have a long hole 713 into which the fastening protrusion 723 is inserted. 8 and 9, when the linear movement of the connecting member 72, the fastening protrusion 723 of the connecting member 72 presses a surface forming the long hole 713 of the pivoting member 71 to pivot. The pivoting behavior of the member 71 is made, and the position of the fastening protrusion 723 in the long hole 713 is changed at the pivoting behavior of the pivoting member 71.

The connection structure as described above of the connecting member 72, the pivoting member 71 and the moving member 76 causes the movement of the moving member 76 at the time of the linear movement of the support 10 relative to the rim member 40. A linear behavior is achieved whereby the elastic force supporting the pressure roller 50 is changed. FIG. 8 shows a state where no force is applied to the support 10 by the user, and FIG. 9 shows support 10 to the rim member 40 by force when the force is applied to the support 10 by the user. Shows the relative movement of. In the state of FIG. 8, the movable member 76 is placed at a position due to the balance of the elastic restoring force of the first and second elastic support members 77 and 78, and in the state of FIG. 9, the movable member 76 is a pivoting member. It is pressed by 71 and is moved. When the support 10 makes a relative linear movement with respect to the rim member 40 in a direction approaching the support surface supporting the wheel 30 (that is, when the state of FIG. 8 is switched from the state of FIG. 8 to FIG. 9), the pivot The casting member 71 pivots to move the movable member 76 in the direction in which the first elastic support member 77 is stretched and the second elastic support member 78 is relaxed. As a result, on the flat surface or the downhill, the pressure roller 50 presses the inner surface of the wheel 30 by the elastic force applied by the pressure roller 50 by the balance of the first and second elastic support members 77 and 78. A rolling resistance of a predetermined size is obtained, and when the ascent is climbed using a walking aid, the support 10 is moved relative to the rim member 40 by the reaction force of the support surface, whereby the state of FIG. As the transition to the state of 9, the compression of the second elastic member 78 is relaxed to reduce the size of the elastic force supporting the pressure roller 50. As a result, the rolling resistance of the wheel 30 can be reduced in the uphill. By this structure, the rotational resistance applied to the wheel 30 on the downhill road having a small ground reaction force is the largest, and the rolling resistance is automatically reduced on the flat and uphill roads, so that comfortable walking can be induced.

The brake structure 80 acts to selectively block rotation of the wheel 30. 2 and 11, the brake structure 80 may include an operation lever 81, a movable rod 82, and a return spring 83. The operation lever 81 is configured to be rotated by the user by holding the hand and may be rotatably installed on the intermediate support 13 of the support 10, for example. An end of the operation lever 81 may be provided with a cam member 82 that rotates together with the operation lever 81. The cam member 82 may have two working surfaces, that is, an unbreaking surface 841 and a braking action surface 842. According to the rotation of the operating lever 81, one of the braking release surface 841 and the braking action surface 842 is configured to selectively contact the support plate 821 which is fastened to the upper end of the movable rod 82. The return spring 83 is installed to elastically support the movable rod 82 in the braking releasing direction, that is, away from the wheel 30. For example, the return spring 83 may elastically support the support plate 821 with respect to the support surface 131 provided in the intermediate support 13. The friction member 84 may be coupled to the tip of the movable rod 82, and the friction member 84 is configured to selectively contact the surface of the wheel 30 in accordance with the rotation of the operation lever 81. When the operation lever 81 is in the unlocking position as shown in Figs. 2 and 11, the unbreaking face 841 is in contact with the support plate 821 and the movable rod 82 is driven by the return spring 83. The friction member 84 moved in the direction away from the wheel 30 and provided at the tip of the movable rod 82 is spaced apart from the surface of the wheel 30. On the other hand, when the operation lever 81 is in the braking position as shown in FIG. 12, the braking action surface 842 is in contact with the support plate 821 so that the movable rod 82 is moved toward the wheel 30 so that the friction member 84 is in contact with the surface of the wheel 30 to achieve braking. When the brake structure 80 is in the braking position, not only the rotation of the wheel 30 is constrained, but also the pivoting behavior of the support 10 is constrained. Rotation of the 30 and the elastic action of the support 10 is also prevented can act as a solid stick.

On the other hand, although not explicitly shown in the drawings, the friction member 84 may be fastened by screwing to the lower end of the movable rod 82, by rotating the friction member 84 to space the wheel 30 By adjusting the breaking pressure can be adjusted. At this time, the locking nut 85 may be fastened to the upper portion of the friction member 84 to be screwed by screwing to prevent the friction member 84 from being separated.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

10: support
11: upper support
12: lower support
13: middle support
14: York
20: handle
21: handle
22: fastening part
23: retention pin
30: wheel
40: rim member
50: pressure roller
51: rolling element
52: roller body
53: support
60: support roller
70: pressurized structure
71: pivoting member
72: connecting member
74: guide rod
75: support member
76: moving member
77: first elastic support member
78: second elastic support member
80: brake structure
81: operation lever
82: movable rod
83: return spring
84: friction member
85: lock nut

Claims (14)

support fixture,
No rim,
At least one support roller and a press roller rotatably fastened to the rim member,
A wheel supported by the pressure roller and the support roller and disposed in a state of being relatively rotatable with respect to the rim member; and
A pressing structure configured to connect the support to the rim member and to support the pressing roller elastically to be in close contact with the wheel to generate rolling resistance that inhibits rotation of the wheel.
Including,
The support is elastically connected to the rim member so that a relative displacement with respect to the rim member can be caused by a reaction force by the support surface for supporting the wheel,
The pressurized structure is configured to automatically adjust the rolling resistance in inverse proportion to the magnitude of the reaction force.
Walking aids. delete delete support fixture,
No rim,
At least one support roller and a press roller rotatably fastened to the rim member,
A wheel supported by the pressure roller and the support roller and disposed in a state of being relatively rotatable with respect to the rim member; and
A pressing structure configured to connect the support to the rim member and to support the pressing roller elastically to be in close contact with the wheel to generate rolling resistance that inhibits rotation of the wheel.
Including,
The pressurized structure is
A guide rod fastened to the rim member and fastened to one end of the pressure roller so as to be movable toward an inner surface of the wheel;
A support member fastened to the guide rod while being spaced apart from the pressure roller;
A moving member movably fastened to the guide rod in a state disposed between the pressure roller and the support member;
A first elastic support member for elastically supporting the movable member with respect to the support member, and
A second elastic support member for elastically supporting the pressure roller with respect to the moving member
Containing
Walking aids. In claim 4,
The pressurized structure is
A pivoting member fastened to the rim member to enable pivoting behavior, and
Further comprising a connection member for connecting the support and the pivoting member,
The connecting member and the pivoting member are fastened to each other so that the pivoting behavior of the pivoting member is achieved by linear movement of the support.
The pivoting member and the movable member are fastened to each other such that the linear movement of the movable member is performed by the pivoting behavior of the pivoting member.
Walking aids. In claim 5,
When the support member moves relative linearly with respect to the rim member in a direction approaching the support surface for supporting the wheel, the pivoting member may be configured such that the movable member is stretched by the first elastic support member and the second elastic support. The member is configured to pivot to move the moving member to move in a relaxed direction.
Walking aids. In claim 4,
And the pressing structure is configured to adjust the elastic force applied to the pressing roller by the first and second elastic support members. In claim 7,
The support member is a walking aid fastened to the guide rod so that the position in the longitudinal direction of the guide rod can be changed. In claim 7,
The pressure roller is
A roller body fastened to the rim member so as to be movable along the longitudinal direction of the guide rod,
A rolling element rotatably fastened to the roller body, and
A support part elastically supported by the second elastic support member and fastened to the roller body so that the position thereof can be changed in the longitudinal direction of the guide rod.
Containing
Walking aids. In claim 9,
The support member is a walking aid fastened to the guide rod so that the position in the longitudinal direction of the guide rod can be changed. The method of claim 1 or 4,
And a brake structure that acts to selectively block rotation of the wheel relative to the support. In paragraph 11
The brake structure
An operating lever fastened to the support so as to rotate between the break breaking position and the breaking position,
A movable rod fastened to the operation lever to move toward the wheel when the operation lever rotates to the breaking position, and
A return spring that elastically supports the movable rod such that the movable rod is moved away from the wheel upon rotation of the operating lever to the braking release position
Containing
Walking aids. In claim 12,
The brake structure further includes a friction member coupled to the front end of the movable rod and configured to be in close contact with the surface of the wheel in response to the movement of the movable rod.
Walking aids. The method of claim 1 or 4,
Further comprising a handle fastened to the top of the support,
The handle is fastened to the support to adjust the height
Walking aids.

Images