JP5558089B2 - Braking control device and wheelchair using the same - Google Patents

Description

  The present invention relates to a control device for braking a vehicle and a walking aid, and a wheelchair equipped with the control device.

  Wheelchairs are used for the purpose of moving users. The user drives the wheelchair while sitting on the wheelchair. The wheelchair can also run when the assistant pushes the wheelchair.

JP 2004-275498 A

  After arriving at the destination, the user may get out of the wheelchair and get up. When standing up, the back of the user's thigh or the back of the shin may push the wheelchair backwards. When standing up, the user may push the wheelchair backwards by hand. The wheelchair pushed backward moves away from the user against the intention of the user. Unless the user walks on his own, the user cannot sit down again in a wheelchair that moves backwards.

  For users who have difficulty standing up by themselves, wheelchairs that support the standing up are preferred. For this purpose, it is desirable that the wheelchair is stopped even when pushed backward. Furthermore, it is preferable that the wheelchair be a support when the user is seated. For this purpose, it is desirable that the wheelchair is stopped even when the user is seated.

  Conventional wheelchairs have a parking brake. The parking brake is released after the user is seated. Further, when the user stands up, the parking brake is operated. A user may forget to apply the parking brake and get up. In this case, the wheelchair may move backward.

  An object of the present invention is to provide a braking control device excellent in safety and operability and a wheelchair using the braking control device.

The wheelchair according to the present invention is
(1) Main frame,
(2) wheels attached to this main frame,
(3) Seat seat for the user to sit on,
(4) A detection device for detecting whether the user is seated on the seat seat and a state where the user is not seated, and (5) a braking device for braking the rotation of the wheel. The braking device includes a braking unit that prevents rotation of the wheels. The braking unit is capable of changing the posture between a braking posture in which the rotation of the wheel is blocked and a non-braking posture in which the rotation of the wheel is not blocked. When the seating seat changes from a seated state to a non-sitting state, the braking section changes to a braking posture, and when the seating seat changes from a non-sitting state to a sitting state, the braking posture Is maintained. When the user is seated on the seat, the braking unit can change its posture from a braking posture to a non-braking posture.

  Preferably, the wheelchair includes a back frame extending upward from the main frame, a pusher provided in the back frame, a release lever, and a release wire. The release lever is rotatably attached to the back frame. The release lever is pulled by being rotated in a direction approaching the pusher, and the release lever is returned by being rotated in a direction away from the pusher. The release lever and the braking device are connected by a release wire. When the user is not seated, when the release lever is pulled, the braking portion changes from the braking posture to the non-braking posture, and when the release lever is returned, the braking portion returns from the non-braking posture to the braking posture. .

  Preferably, the braking device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit. The braking restriction unit can be changed between a restriction posture for maintaining the braking portion in the non-braking posture in the non-braking posture and a non-restricted posture in which the braking portion does not restrict a change in posture between the braking posture and the non-braking posture. Has been. When the user is seated on the seat seat, the braking restriction portion is in a restricted posture, and when the user is not seated on the seat seat, the braking restriction portion is in an unrestricted posture.

  Preferably, the braking portion includes a pressing body and a pressing portion. The braking posture is a posture in which the pressing portion presses the pressing body against the wheel, and the non-braking posture is a posture in which the pressing portion separates the pressing body from the wheel.

  Preferably, the pressing portion includes a first elastic body and a brake rod. The pressing body is attached to the tip of the brake rod in the braking direction. Due to the biasing force of the first elastic body, the brake rod biases the pressing body in a direction of pressing the pressing body against the wheel.

  Preferably, the braking restriction section includes a second elastic body and a restriction lever that can be engaged with the brake rod. Due to the biasing force of the second elastic body, the limit lever is biased in such a direction that it can engage with the brake rod. The restriction lever in the non-restricted posture is released against the biasing force of the second elastic body in a direction opposite to the direction in which the restriction lever can be engaged with the brake rod.

  Preferably, an armrest is provided at the upper left and right of the seat. The braking unit includes a first lever that is operated by a user and can move a brake rod in a braking posture to a position of a brake rod in a non-braking posture. The first lever is located on the left and right side surfaces of the armrest. When the braking part is in the non-braking position and the braking restriction part is in the restricted position, the first lever can move to a position that does not hinder the movement of the brake rod that moves from the position of the non-braking position to the position of the braking position. It is configured.

  In another wheelchair according to the present invention, the braking portion includes a disk, a caliper, and a friction material. This disc is fixed integrally to the wheel. The braking posture is a posture where the caliper presses the friction material against the disc, and the non-braking posture is a posture where the caliper does not press the friction material against the disc.

  Preferably, the wheelchair includes a third wire. The braking unit includes a link mechanism. The third wire connects the link mechanism and the caliper. This link mechanism can be changed in posture between a braking posture and a non-braking posture. The braking restriction portion includes a second elastic body and a restriction lever that can be engaged with the link mechanism. Due to the biasing force of the second elastic body, the limit lever is biased in such a direction that it can engage with the link mechanism. The restriction lever in the non-restricted posture is released against the biasing force of the second elastic body in the direction opposite to the direction in which the restriction lever can be engaged.

  Preferably, in this wheelchair, the braking portion includes a pressing body and a pressing portion. The pressing portion has a link mechanism. The pressing body is attached to the tip of the link arm of the link mechanism in the braking direction. The braking posture is a posture in which the link mechanism presses the pressing body against the wheel, and the non-braking posture is a posture in which the link mechanism separates the pressing body from the wheel.

The control device according to the present invention is used for a vehicle including a seat for carrying a person and wheels.
The control device includes a detection device and a braking device. The detection device is configured to detect a state where a user is seated on a seat and a state where the user is not seated. The braking device includes a braking unit that prevents rotation of the wheel. The braking unit is configured to change its posture between a braking posture that prevents the rotation of the wheel and a non-braking posture that does not prevent the rotation of the wheel. When the seat is changed from the seated state to the seated state, the braking portion changes to the braking posture. When changing from the non-sitting state to the sitting state, the braking unit maintains the braking posture. When the user is seated on the seat, the braking portion is configured to be able to change its posture between a braking posture and a non-braking posture.

  The control device according to the present invention is used for a walking aid that includes a support portion for supporting a person and wheels. The control device includes a detection device and a braking device. This detection device is configured to detect a state in which the user is supported by the support portion and a state in which the user is not supported. The braking device includes a braking unit that prevents rotation of the wheels. The braking unit is capable of changing the posture between a braking posture in which the rotation of the wheel is blocked and a non-braking posture in which the rotation of the wheel is not blocked. When changing from a state in which the user is supported by the support portion to a state in which the user is not supported, the braking portion changes to a braking posture. When changing from the unsupported state to the supported state, the braking unit maintains the braking posture. When the user is supported by the support portion, the braking portion is configured so that the posture can be changed between a braking posture and a non-braking posture.

  Preferably, the braking device of the control device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit. The braking restriction unit changes between a restriction posture in which the braking portion in the non-braking posture is maintained in the non-braking posture and a non-restriction posture in which the posture change between the braking posture and the non-braking posture of the braking portion is not restricted. Has been made possible. When the user is seated on the seat seat, the braking restriction portion is in a restricted posture, and when the user is not seated on the seat seat, the braking restriction portion is in an unrestricted posture.

  In the wheelchair according to the present invention, in the state where the user is not seated, the rotation of the wheel is prevented by the braking device unless it is released by the release lever. The wheelchair does not move backwards. The user can easily and safely re-seat the wheelchair. When the user performs the releasing operation of the braking device, the prevention of the rotation of the wheel is released. When the user stands up, the wheel is prevented from rotating. Moreover, the vehicle and the walking aid are excellent in safety by mounting the control device according to the present invention.

FIG. 1 is a front view showing a wheelchair according to an embodiment of the present invention. FIG. 2 is a front view showing a part of the wheelchair of FIG. FIG. 3 is a front view showing a part of the wheelchair detection device of FIG. 1 in use. FIG. 4 is a front view showing another usage state of a part of the wheelchair detection device of FIG. 1. FIG. 5 is a front view showing a part of the braking device for the wheelchair of FIG. 6 is a front view showing a part of the wheelchair braking device in FIG. 1 in use. FIG. 7 is a front view showing another usage state of a part of the braking device for the wheelchair of FIG. 1. FIG. 8 is a front view showing still another usage state of a part of the braking device for the wheelchair of FIG. FIG. 9 is a front view showing a part of a braking device for a wheelchair according to another embodiment of the present invention. FIG. 10 is a front view showing a part of the braking device of FIG. 9 in use. FIG. 11 is a front view showing another usage state of a part of the braking device of FIG. 9. FIG. 12 is a front view showing still another usage state of a part of the braking device of FIG. FIG. 13 is a front view showing a wheelchair according to still another embodiment of the present invention. FIG. 14 is an explanatory view showing a part of the wheelchair detection device of FIG. FIG. 15 is an explanatory view showing the caliper of the wheelchair of FIG. FIG. 16 is a partially enlarged view showing a part of the wheelchair braking device of FIG. 13. FIG. 17 is an explanatory diagram showing a part of the braking device of FIG. 16 in use. FIG. 18 is an explanatory view showing another usage state of a part of the braking device of FIG. FIG. 19 is an explanatory view showing still another usage state of a part of the braking device of FIG.

  Hereinafter, the present invention will be described in detail based on a preferred embodiment with appropriate reference to the drawings.

  A wheelchair 2 shown in FIGS. 1 and 2 includes a main frame 4, a back frame 6, a pusher lever 8 as a release lever, a pair of wheels 10, a pair of casters 14, a seat 16, a detection device 18, and a cushion 20. A pair of braking devices 22, a pair of first cables 26, a pair of second cables 28, a pair of footrests 30, and a pair of armrests 32. In FIG. 1, the right direction is the forward direction of the wheelchair 2, and the left direction is the backward direction of the wheelchair 2.

  The back frame 6 is fixed to the main frame 4. The back frame 6 extends upward from the main frame 4. The back frame 6 includes a pusher 34 at its upper end. When the assistant pushes the wheelchair 2, the pusher 34 is held. A pusher lever 8 is attached to the back frame 6. The pusher lever 8 is rotatable with respect to the back frame 6. The pusher lever 8 is rotated in a direction approaching the pusher 34, whereby the pusher lever 8 is pulled, and the pusher lever 8 is rotated in a direction away from the pusher 34, whereby the pusher lever 8 is moved. Is configured to be returned. The pusher lever 8 is attached so as to approach the pusher 34 by being grasped together with the pusher 34 by an assistant, and to push away from the pusher 34 when the assistant releases the hand.

  Each wheel 10 is attached to the main frame 4. The wheel 10 is attached to the axle of the main frame 4 so as to be able to rotate. Each caster 14 includes a caster frame 36 and wheels 38. The caster frame 36 is attached to the main frame 4. The caster frame 36 is rotatable with respect to the main frame 4 about the vertical axis. The wheel 38 is attached to the caster frame 36. The wheel 38 is rotatable with respect to the caster frame 36 in the horizontal direction as a rotation axis.

  The seat sheet 16 is made of cloth. The seat 16 may be made of other materials. The seat 16 is stretched on the main frame 4. A detection device 18 is placed on the seat sheet 16. The detection device 18 is fixed to the seat 16. A cushion 20 is placed on the detection device 18. An armrest 32 is fixed to the upper left and right of the seat 16.

  Each first cable 26 connects the detection device 18 and the braking device 22. The detection device 18 and the braking device 22 are the control device 27 of the wheelchair 2. Each second cable 28 connects the pusher lever 8 and the braking device 22. As shown in FIG. 2, the braking device 22 includes a cover 39.

  As shown in FIGS. 3 and 4, the detection device 18 includes a lower plate 40, a hinge 42, an upper plate 44, and a spring 46. The lower plate 40 is bonded to the seat sheet 16 with an adhesive. The hinge 42 is joined to the lower plate 40 and the upper plate 44 by welding. The upper plate 44 can rotate around the hinge 42. The spring 46 is sandwiched between the lower plate 40 and the upper plate 44. The lower end of the spring 46 is fixed to the lower plate 40, and the upper end thereof is fixed to the upper plate 44. The spring 46 is a compression coil. The spring 46 urges the upper plate 44 upward.

  As shown in FIGS. 3 and 4, the first cable 26 includes a first wire 52 and a first tube 54 that covers the first wire 52. The first wire 52 passes through the lower plate 40 and the upper plate 44. A stopper 58 is attached to the upper end 56 of the first wire 52. The stopper 58 connects the upper end 56 of the first wire 52 to the upper plate 44.

  In FIG. 3, the upper plate 44 extends substantially horizontally. On the other hand, in FIG. 4, the upper plate 44 is inclined backward and upward. Therefore, the distance L corresponding to the length of the first wire 52 between the lower plate 40 and the upper plate 44 is small in FIG. 3 and large in FIG.

  In FIG. 3, the spring 46 is contracted. Therefore, the detection device 18 is also contracted in the height direction. In FIG. 4, the spring 46 is extended. Therefore, the detection device 18 also extends in the height direction. As the upper plate 44 rotates in the direction of arrow B in FIG. 3, the detection device 18 extends. As the upper plate 44 rotates in the direction of arrow A in FIG. 4, the detection device 18 contracts. The direction of arrow B in FIG. 3 is the “positive direction”. The direction of arrow A in FIG. 4 is the “reverse direction”.

  FIG. 5 shows a part of the braking device 22 with the cover 39 removed. FIG. 5 shows the braking device 22 on the right side of the user. The brake device 22 on the left side has a shape obtained by inverting the shape of the brake device 22 on the right side. The brake device 22 includes a substrate 62, a brake rod 64, a brake plate 66 as a pressing body, a rod spring 67 as a first elastic body, a first lever 68 as an operation lever, a push rod 70, a spring 72, and a release arm. A first arm 74, a limiting lever 76, a spring 78 as a second elastic body, a pin 80, a second arm 82, a bearing 84, a bearing 86, a claw 88, a protrusion 89, and a stopper 90 are provided. In the wheelchair 2, the brake rod 64, the rod spring 67 and the first arm 74 are the braking portion 91. The limiting lever 76 and the spring 78 are the braking limiting portion 92.

  The shape of the brake rod 64 is a stepped round bar shape that is long in the front-rear direction. A brake plate 66 is pivotally attached to the rear end of the brake rod 64. This rear end is a front end in the braking direction described later. The brake plate 66 is attached so as to be rotatable with respect to a rotation axis parallel to the rotation axis of the wheel 10. The brake plate 66 is provided to face the outer peripheral surface of the wheel 10. The brake rod 64 includes a first large diameter portion 93, a second large diameter portion 94, and a third large diameter portion 96. The first large-diameter portion 93, the second large-diameter portion 94, and the third large-diameter portion 96 are formed in this order from the rear to the front. The aforementioned bearing 84 is located behind the substrate 62. The bearing 86 is located in front of the substrate 62. The brake rod 64 is slidably mounted in the front-rear direction between the rear end and the third large diameter portion 96 by bearings 84 and 86.

  The claw 88 is formed in the upper part of the bearing 86. The claw 88 protrudes upward. As shown in FIG. 5, the claw 88 has a locking surface 97 and a tapered surface 98. The locking surface 97 faces rearward. The locking surface 97 is a surface substantially perpendicular to the rear. The tapered surface 98 is a surface inclined from the lower side to the upper side from the front side to the rear side.

  The first large diameter portion 93 and the second large diameter portion 94 are located between the bearing 84 and the bearing 86. A rod spring 67 is disposed between the second large diameter portion 94 and the bearing 86. The rod spring 67 urges the second large diameter portion 94 rearward with respect to the bearing 86. The brake rod 64 is always urged rearward. This biasing direction is the braking direction of the braking portion 91, and the opposite direction is the non-braking direction. In FIG. 5, the third large diameter portion 96 is pressed against the front surface of the bearing 86. In FIG. 5, the brake rod 64 is positioned rearward in the sliding direction.

  The lower end of the first lever 68 is pivotally attached to the substrate 62. The first lever 68 is attached so that its upper end can be rotated in the front-rear direction. The first lever 68 is urged rearward by a spring 72 as an elastic body. The first lever 68 is pressed against the stopper 90 by the biasing force of the spring 72. When the first lever 68 is rotated forward, the first large-diameter portion 93 is configured to engage. A push rod 70 is inserted into the first lever 68 so as to be movable along its axis. The upper end portion of the push rod 70 is projected from the upper end surface of the first lever 68. The first lever 68 is located on the side surface of the armrest 32 in the left-right direction.

  The first arm 74 is pivotally attached to the brake rod 64 at its rear end. The front end of the first arm 74 is rotatable. The second cable 28 includes a second wire 99 as a release wire and a second tube that covers the second wire 99. The second wire 99 is connected to the front end portion of the first arm 74. In the state of FIG. 5, the pin 80 is disposed so as to contact the first arm 74 when the first arm 74 is rotated counterclockwise. Ratchet teeth 100 are formed below the first arm 74. In the state of FIG. 5, the ratchet teeth 100 and the claws 88 are engaged.

  The limiting lever 76 is pivotally attached to the substrate 62 between its front end and rear end. The front end portion and the rear end portion of the limiting lever 76 are rotatable. The first wire 52 is connected to the rear end portion of the limiting lever 76. A spring 78 is positioned between the bearing 86 and the limiting lever 76. Due to the biasing force of the spring 78, the limiting lever 76 is configured to rotate clockwise. A claw 102 projecting upward is formed on the rear end side from the portion where the limiting lever 76 is axially attached. The claw 102 has a locking surface 104 and a tapered surface 106. The locking surface 104 faces forward. The locking surface 104 is a surface substantially perpendicular to the front. The taper surface 106 is a surface inclined from the upper side to the lower side from the front to the rear.

  The portion between the front end and the rear end of the second arm 82 is pivotally attached to the substrate 62. The front end and the rear end of the second arm 82 are rotatable. The rear end portion of the second arm 82 is in contact with the lower end of the bush rod 70. The front end portion of the second arm 82 is engaged with the first arm 74.

  In FIG. 5, the brake plate 66 is pressed against the wheel 10 (not shown). In the state of FIG. 5, the wheel 10 is braked. The ratchet teeth 100 of the first arm 74 are engaged with the claws 88. The brake plate 66 is pivotally attached to the brake rod 64. When the wheel 10 rotates, the brake plate 66 is rotated. The forward movement (rightward in FIG. 5) of the brake rod 64 is prevented by the engagement between the ratchet teeth 100 and the claws 88. The brake plate 66 is rotated to be hard to the outer peripheral surface of the wheel 10. Thereby, rotation of the wheel 10 is prevented. In the state of FIG. 5, the rotation of the wheel of the wheelchair 2 is blocked. The braking unit 91 is in a braking posture. This braking posture is a posture in which the braking unit 91 prevents the rotation of the wheels.

  FIG. 6A shows a state in which the bush rod 70 is pushed downward with respect to the first lever 68. The lower end of the bush rod 70 pushes down the rear end portion of the second arm 82. Thereby, the second arm 82 is rotated counterclockwise. The front end portion of the second arm 82 is pushed up. Thereby, the 1st arm 74 is rotated counterclockwise. The engagement between the ratchet teeth 100 and the claws 88 of the first arm 74 is released. In FIG. 6A, the first wire 52 is pulled toward the limit lever 76 side. The limit lever 76 is rotated clockwise by the biasing force of the spring 78. A limiting lever 76 is brought into contact with the brake rod 64. The braking restriction unit 92 is in a restricted posture. The restricted posture here includes not only the posture in which the braking portion 91 in the non-braking posture is maintained in the non-braking posture, but also the posture in which the braking portion 91 changed to the non-braking posture can be maintained in the non-braking posture. . In FIG. 5, the tapered surface 106 of the limiting lever 76 is brought into contact with the second large diameter portion 94.

  FIG. 6B shows a state where the first lever 68 is rotated forward. The first lever 68 is in contact with the first large diameter portion 93 of the brake rod 64. The brake rod 64 is moved forward. The braking unit 91 is in a non-braking posture. This non-braking posture is a posture in which the main body portion 91 does not prevent the wheels from rotating. The claw 102 of the limiting lever 76 is engaged with the brake rod 64. The locking surface 104 of the claw 102 is engaged with the second large diameter portion 94. This engagement restricts the brake rod 64 from moving backward. The braking restriction unit 92 maintains the braking unit 91 in the non-braking posture in the non-braking posture.

  FIG. 6C shows a state where the first lever 68 is rotated backward. The first lever 68 is in contact with the stopper 90. The first lever 68 has returned to the position shown in FIG. In FIG. 6C, the locking surface 104 of the claw 102 is engaged with the second large diameter portion 94 as in FIG. 6B. This engagement restricts the brake rod 64 from moving backward. The braking restriction unit 92 maintains the braking unit 91 in the non-braking posture in the non-braking posture.

  FIG. 7 (a) shows the same state as FIG. 6 (c). In FIG. 7B, the limiting lever 76 is rotated counterclockwise against the spring 78. The braking restriction unit 92 is in an unrestricted posture. The non-restricted posture is a posture that does not prevent the braking unit 91 from changing the posture between the non-braking posture and the braking posture. The engagement between the second large diameter portion 94 of the brake rod 64 and the claw 102 of the limiting lever 76 is released. The brake rod 64 has moved backward. The braking unit 91 is in a braking posture. In FIG. 7B, the brake plate 66 is in contact with the wheel 10 (not shown). Even if the brake rod 64 moves backward, the first lever 68 in a state of being rotated rearward does not hinder the movement. When the braking portion 91 is in the non-braking posture and the braking restriction portion 92 is in the restricted posture (the state shown in FIG. 7A), the first lever moves the brake rod that moves from the braking posture position to the braking posture position. It has been moved to a position that does not interfere.

  FIG. 8A shows the same state as FIG. 7B. The braking unit 91 is in a braking posture. In FIG. 8B, the second wire 99 is pulled toward the pusher lever 8 in FIG. The first arm 74 rotates counterclockwise. The engagement between the ratchet teeth 100 and the claws 88 of the first arm 74 is released. The first arm 74 is rotated while being pressed against the pin 80. As a result, the brake rod 64 moves forward against the urging force of the rod spring 67. In the state of FIG. 8B, braking is released. The pusher lever 8 is pulled and the braking portion 91 is in the non-braking posture.

  With reference to FIGS. 3, 4, 5, and 6, a method in which the user sits on the wheelchair 2 and releases the braking of the rotation of the wheel 10 will be described. FIG. 5 shows a state of a part of the braking device 22 before the user is seated on the wheelchair 2. In FIG. 5, the brake rod 64 and the brake plate 66 are pushed backward to brake the rotation of the wheel 10.

  In the wheelchair 2, whether or not the user is seated on the seat 16 is detected by a change in the distance L in the detection device 18 of FIG. 4. When a user sits on the wheelchair 2, the weight of the user is applied to the detection device 18 via the cushion 20. The upper plate 44 that receives the weight rotates in the direction of arrow A in FIG. 4 while compressing the spring 46. In other words, the detection device 18 contracts. The detection device 18 shifts from the state shown in FIG. 4 to the state shown in FIG. This shift reduces the distance L. As the upper plate 44 rotates, the first wire 52 is pulled toward the limit lever 76 by a spring (not shown). As a result, the limit lever 76 is brought into contact with the brake rod 64 as shown in FIG. The braking restriction unit 92 changes from an unrestricted posture to a restricted posture.

  The user holds the upper end of the first lever 68. An operator pushes the push rod 70 downward. As a result, the second arm 82 is rotated counterclockwise. The front end of the second arm 82 rotates the first arm 74 counterclockwise. The engagement between the ratchet teeth 100 and the claws 88 is released. This state is shown in FIG.

  The user rotates the first lever 68 forward against the urging force of the rod spring 67 and the spring 72. The brake rod 64 and the brake plate 66 are advanced. As a result, the brake plate 66 moves away from the wheel 10 and braking is released. The braking unit 91 changes from a braking posture to a non-braking posture. At this time, the claw 102 of the limiting lever 76 is engaged with the second large diameter portion 94 of the brake rod 64 in the braking posture. By this engagement, the brake rod 64 is restrained from moving backward by the biasing force of the rod spring 67. The braking restriction unit 92 maintains the non-braking posture of the braking unit 91. This state is shown in FIG.

  The user stops pushing the first lever 68 forward. The first lever 68 is pulled back by the spring 72. The first lever 68 returns to the position where it abuts against the stopper 90. At this time, since the second large-diameter portion 94 of the brake rod 64 and the claw 102 of the limiting lever 76 are engaged, the brake rod 64 is kept in a forwardly positioned state. Thereby, the state in which the brake is released is maintained. This state is shown in FIG. Also in FIG. 6C, the braking restriction unit 92 maintains the non-braking posture of the braking unit 91. A user drives the wheelchair 2.

  Next, when the user arrives at the destination, the user stands up from the wheelchair 2. When the user stands up from the wheelchair 2, the weight of the user on the detection device 18 is removed. The upper plate 44 is pushed by the spring 46 and rotates in the direction of arrow B in FIG. In other words, the detection device 18 expands. The detection device 18 shifts from the state shown in FIG. 3 to the state shown in FIG. This transition extends the distance L. The first wire 52 is pulled toward the detection device 18 by the rotation of the upper plate 44.

  By pulling the first wire 52 to the detection device 18 side, the limiting lever 76 is rotated counterclockwise from the state of FIG. The engagement between the second large diameter portion 94 of the brake rod 64 and the claw 102 of the limiting lever 76 is released. The braking restriction unit 92 changes from the restricted posture to the non-restricted posture. The brake rod 64 moves backward. The brake plate 66 contacts the wheel 10 (not shown). The braking unit 91 changes from a non-braking posture to a braking posture. As the brake rod 64 moves rearward, the ratchet teeth 100 of the first arm 74 are engaged with the claws 88. In this way, the braking device 22 reaches the state shown in FIG. 7B from the state shown in FIG.

  In other words, the braking device 22 prevents the wheel 10 from rotating. When standing up, the back of the user's thigh or the back of the shin may push the wheelchair 2 backward. When standing up, the user may push the wheelchair 2 backward by hand. Since the rotation of the wheel 10 is prevented, the wheelchair 2 hardly reverses even if pushed backward. The user can stand up with the wheelchair 2 as a support. Even after the user stands up, the wheelchair 2 is not far from the user. The user can sit on the wheelchair 2 again without walking. Since the user is inferior in muscular strength as compared to a healthy person, the user who has stood up may fall backward immediately. Even if it falls, the wheelchair 2 receives the user.

  When the user is not seated on the wheelchair 2, the rotation of the wheel 10 is prevented by the braking device 22 as described above. In other words, unintended forward and backward movement of the wheelchair 2 is prevented. The braking device 22 can function as a parking brake.

  Furthermore, a method of operating the braking device 22 in a state where the user is seated on the wheelchair 2 and is running the wheelchair 2 will be described. The braking device 22 is in the state shown in FIG. The user rotates the limiting lever 76 in a direction to bring the protrusion 108 and the rear end of the limiting lever 76 closer. As a result, the engagement between the second large diameter portion 94 of the brake rod 64 and the claw 102 of the limiting lever 76 is released. The brake rod 64 moves backward. The brake plate 66 contacts the wheel 10 (not shown). As the brake rod 64 moves rearward, the ratchet teeth 100 of the first arm 74 are engaged with the claws 88. In this way, the braking device 22 reaches the state shown in FIG. 7B from the state shown in FIG.

  The first lever 68 is separate from the brake rod 64. Even when the brake rod 64 is positioned forward, the first lever 68 is pulled back backward by the spring 72. Even if the limiting lever 76 is rotated and the brake rod 64 moves backward, it does not move with the first lever 68. Thereby, it is suppressed that the 1st lever 68 collides with a user's arm etc.

  When releasing this braking, the user holds the upper end of the first lever 68. An operator pushes the push rod 70 downward. The second arm 82 is rotated counterclockwise. The first arm 74 is rotated counterclockwise. The engagement between the ratchet teeth 100 and the claws 88 is released. The user rotates the first lever 68 forward against the urging force of the rod spring 67 and the spring 72. The brake rod 64 and the brake plate 66 are advanced. The brake plate 66 is separated from the wheel 10. The braking unit 91 changes from a braking posture to a non-braking posture. The claw 102 of the limiting lever 76 is engaged with the second large diameter portion 94 of the brake rod 64 in the braking posture. The braking restriction unit 92 maintains the non-braking posture of the braking unit 91. Thus, the braking device 22 is returned to the state shown in FIG. In the wheelchair 2, when the user is seated, the braking unit 91 can be changed in posture between a braking posture and a non-braking posture.

  Further, a brake releasing method by an assistant will be described in a state where the user is not seated on the wheelchair 2. FIG. 8A shows a state of the braking device 22 of the wheelchair 2 in which the user is not seated. In FIG. 8A, the rotation of the wheel 10 is braked. An assistant stands behind this wheelchair 2. The assistant holds the pusher 34 in FIG. When the assistant pulls the pusher lever 8, the second wire 99 is pulled.

  Thereby, the 1st arm 74 rotates counterclockwise. The first arm 74 shifts from the state shown in FIG. 8A to the state shown in FIG. In the state of FIG. 8B, the brake rod 64 is separated from the wheel 10 against the urging force of the rod spring 67. The braking of the rotation of the wheel 10 is released.

  In other words, the operation of the pusher lever 8 cancels the prevention of the rotation of the wheel 10. The assistant can move the wheelchair 2 in a so-called “empty state” in which the user is not seated while pulling the pusher lever 8. When the assistant releases his hand from the pusher lever 8, the brake rod 64 presses the brake plate 66 against the wheel 10 by the urging force of the rod spring 67. By releasing the hand from the pusher lever 8, the state of FIG.

  In the wheelchair 2, when the user is not seated, when the pusher lever 8 is pulled, the braking portion 91 changes from the braking posture to the non-braking posture, and when the pusher lever 8 is returned, the braking portion 91. Is returned from the non-braking position to the braking position. In the wheelchair 2, the wheelchair 2 may be provided with a mechanism for locking the state in which the pusher lever 8 is pulled. The braking device 22 of the wheelchair 2 has a small number of parts.

  FIG. 9 shows a part of a braking device 112 of a wheelchair 110 according to another embodiment of the present invention. Here, a different part from the structure of the wheelchair 2 of FIG. 1 is demonstrated. The description of the same parts as the configuration of the wheelchair 2 is omitted. A brake device 112 is attached to the wheelchair 110 in place of the brake device 22 of the wheelchair 2. In the wheelchair 110, the detection device 18 and the braking device 112 are the control device 113.

  The braking device 112 includes a substrate 114, a first link arm 116, a second link arm 118, a third link arm 120, a brake plate 122 as a pressing body, a second lever 124 as an operation lever, a locking plate 126, and a stopper. 128. The leftward direction in FIG. 9 is the rear direction, and the braking direction is such that the brake plate 122 is pressed against the wheel 10 (not shown).

  The first link arm 116 is pivotally attached to the substrate 114 at its upper end. The lower end of the first link arm 116 extends downward and obliquely rearward. A brake plate 122 is pivotally attached to the lower end of the first link arm 116. The brake plate 122 is rotatable about a rotation axis parallel to the rotation axis of the wheel 10 (not shown).

  The second link arm 118 is pivotally mounted in front of the substrate 114. The second link arm 118 is pivotally attached to the substrate 114 at a portion between the front end portion and the rear end portion thereof. The lower end portion of the second lever 124 is integrally fixed to the front end portion. The second lever 124 extends upward from its lower end. The second lever 124 and the second link arm 118 are integrally attached to the substrate 114 so as to be rotatable.

  The front end portion of the third link arm 120 is pivotally attached to the rear end portion of the second link arm 118. The rear end portion of the third link arm 120 is pivotally attached to a portion between the upper end portion and the lower end portion of the first link arm 116. The substrate 114, the first link arm 116, the second link arm 118, and the third link arm 120 constitute a link mechanism 129. As shown in FIG. 9, the braking device 112 has a first link arm 116 and a second lever 124 connected by a so-called toggle joint mechanism.

  The locking plate 126 is attached to the front end portion of the third link arm 120. The lower end of the first wire 52 is connected to the locking plate 126. The first wire 52 extends below the braking device 112. The first wire 52 extends toward the detection device 18. The upper end of the first wire 52 is connected to the detection device 18. The lower end of the second wire 99 is connected to the locking plate 126. The second wire 99 extends above the braking device 112. The second wire 99 extends toward the pusher lever 8. The second wire 99 is connected to the pusher lever 8. In the braking device 112, the first link arm 116, the second link arm 118, the third link arm 120, and the second lever 124 function as the braking unit 130.

  FIG. 10A shows a state where the brake plate 122 is pressed against the wheel 10 (not shown). A link mechanism 129 presses the brake plate 122 against the wheel 10. The braking unit 130 is in a braking posture. As shown in FIG. 3, the detection device 18 is contracted against the biasing force of the spring 46. As shown in FIG. 10A, the first wire 52 is pulled to the braking device 112 side by a spring (not shown). The first wire 52 is slack on the braking device 112 side. In the state of FIG. 10A, the second lever 124 is allowed to rotate forward.

  In FIG.10 (b), the 2nd link arm 118 and the 3rd link arm 120 are extended on the straight line. In the state of FIG. 10B, the brake plate 122 is pressed against the wheel 10 as compared with the state of FIG. In the state of FIG.10 (c), the upper end part of the 2nd lever 124 is rotated clockwise. The brake plate 122 is separated from the wheel 10. The link mechanism 129 does not press the brake plate 122 against the wheel 10. The braking unit 130 is in a non-braking posture.

  FIG. 11A shows a state similar to that in FIG. That is, the brake plate 122 is separated from the wheel 10. FIG. 11B shows a state where the first wire 52 is drawn downward. As a result, the upper end of the second lever 124 rotates counterclockwise. The second link arm 118 and the third link arm 120 are rotating. The second link arm 118 is in contact with the stopper 128. The lower end portion of the first link arm 116 rotates counterclockwise. The brake plate 122 is pressed against the wheel 10.

  In this wheelchair 110, the detection device 18 is in the state shown in FIG. 4 until the user is seated. The first wire 52 is pulled to the detection device 18 side. The braking device 112 is in the state shown in FIG. The braking device 112 brakes the rotation of the wheel 10. A user sits on the wheelchair 110. The detection device 18 changes from the state of FIG. 4 to the state of FIG. The first wire 52 is loosened, and the braking device 112 is in the state shown in FIG. When the user is seated, the rotation of the wheel 10 is maintained in a braked state.

  The seated user rotates the second lever 124 clockwise. The braking device 112 changes from the state of FIG. 10A to the state of FIG. 10C through the state of FIG. 10B. In FIG. 10C, braking of the rotation of the wheel 10 by the braking device 112 is released. The wheelchair 110 on which the user is seated is caused to travel.

  If the second lever 124 is rotated counterclockwise while the user is seated, the state changes from the state shown in FIG. 10C to the state shown in FIG. In this braking device 112, as shown in FIGS. 10A to 10C, the posture in which the brake plate 122 is pressed against the wheel 10 and the brake plate 122 pressed against the wheel 10 while the user is seated. The posture can be changed between the postures that cannot be performed.

At the destination, the wheelchair 110 is stopped. A user stands up from the wheelchair 110.
The intelligent device 18 changes from the state of FIG. 3 to the state of FIG. The first wire 52 is pulled, and the braking device 112 changes from the state shown in FIG. 11A to the state shown in FIG. When the user changes from the state of being seated on the seat 16 to the state of not being seated, the brake plate 122 is pressed against the wheel 10. As shown in FIG. 11B, the braking device 112 brakes the rotation of the wheels.

  In the wheelchair 110, the spring 46, the first wire 52, the first link arm 116, the second link arm 118, and the third link arm 120 are constantly biased in a braking direction that presses the brake plate 122 against the wheel 10.

  In the braking device 112, the brake plate 122 is pressed against the wheel 10 in the state of FIG. 10B than in the state of FIG. If the brake device 112 does not apply an external force such as an operation of the second lever 124, the state of FIG. Even if the user sits on the wheelchair 110, the posture in which the brake plate 122 is pressed against the wheel 10 is maintained.

  A brake releasing method by an assistant will be described in a state where the user is not seated on the wheelchair 110. FIG. 12A shows a state of the braking device 112 of the wheelchair 110 where the user is not seated. In FIG. 12A, the wheel 10 is braked. A helper stands behind this wheelchair 110. The assistant holds the pusher 34 in FIG. When the assistant pulls the pusher lever 8, the second wire 99 is pulled.

  As a result, the front end portion of the third link arm 120 rotates upward against the biasing force of the spring 46. Thereby, the 1st link arm 116, the 2nd link arm 118, and the 3rd link arm 120 transfer to the state shown in Drawing 12 (b) from the state shown in Drawing 12 (a). In the state of FIG. 12B, the brake plate 122 is pulled away from the wheel 10 against the biasing force of a spring (not shown). The brake of the wheel 10 is released.

  In other words, the operation of the pusher lever 8 cancels the prevention of the rotation of the wheel 10. An assistant can move the wheelchair 110 in a so-called “empty state” in which the user is not seated while pulling the pusher lever 8. When the assistant releases his hand from the pusher lever 8, the brake plate 122 is pressed against the wheel 10 by the urging force of the spring 46. By releasing the hand from the pusher lever 8, the state shown in FIG.

  The braking device 112 of the wheelchair 110 includes a toggle joint mechanism. When the toggle joint mechanism is connected to the first wire 52, the braking unit 130 biases the brake plate 122. As a result, the brake plate 122 is pressed against the wheel 10 when the seat seat 16 changes from a seated state to a seated state. In the wheelchair 110, the parking brake is automatically applied by including the detection device 18 and the first wire 52. The wheelchair 110 has a parking brake automatically applied by adding simple parts.

  FIG. 13 shows a wheelchair 132 according to still another embodiment of the present invention. Here, a configuration different from the wheelchair 2 will be described. The description of the same configuration as the wheelchair 2 is omitted. The wheelchair 132 includes a detection device 134, a pair of braking devices 136, a first cable 138, a pair of second cables 140, and a pair of third cables 142. The braking device 136 includes a disk 144 and a caliper 145. The detection device 134 and the braking device 136 are the control device 146. The second cable 140 includes a second wire 155 and a second tube through which the second wire 155 is passed. One end of the second wire 155 is connected to the pusher lever 8.

  FIG. 14A is an explanatory diagram of the direction indicated by the arrow XIV in FIG. The detection device 134 includes a sensor wire 147, a frame 148, a cushion 149, and an arm 150. The frame 148 includes a bottom plate 151 fixed to the seat 16 and side plates 152 extending upward on the left and right side surfaces. The inspection device 134 is fixed to the seat sheet 16. The frame 148 is made of spring steel. The frame 148 is made of a material having excellent elasticity. A central portion of the arm 150 is rotatably attached to a shaft 153 fixed to the main frame 4. The arm 150 is biased counterclockwise in FIG. 14 by a biasing force of a spring (not shown).

  The first cable 138 includes a first wire 154 and a first tube through which the first wire 154 is passed. One end of the first wire 154 is connected to one end of the arm 150. One end of the sensor wire 147 passes through one side plate 152 and is connected to the other side plate 152. The sensor wire 147 is bridged between the side plates 152. In the wheelchair 132, the sensor wire 147 passes through the cushion 149. The other end of the sensor wire 147 is connected to the other end of the arm 150. The arm 150 functions so that the first wire 154 is loosened when the sensor wire 147 is pulled toward the side plate 152, and the sensor wire 147 is loosened when the first wire 154 is pulled toward the other end side. It is functioning.

  As shown in FIG. 15A, the caliper 145 includes a main body 157, an arm 158, and a friction material (not shown). The third cable 142 includes a third wire 160 and a third tube through which the third wire 160 is passed. A third wire 160 is passed through the end 162 of the main body 157. The other end of the third wire 160 is connected to the other end 164 of the arm 158. The arm 158 is attached to the main body 157. The arm 158 has the other end 164 rotatable about the one end 166 as a rotation center.

  In FIG. 15A, one friction material attached to the main body 157 and the other friction material attached to the arm 158 sandwich the disk 144. As a result, the caliper 145 brakes the rotation of the disk 144.

  FIGS. 16A and 16B show a part of the braking device 136 with the cover removed. The braking device 136 includes a substrate 166, a first link arm 168, a second link arm 170, a third link arm 172, a third lever 174 as an operation lever, a spring 176 as a first elastic body, and a fourth as a limiting lever. A lever 178, a spring 180 as a second elastic body, and an engagement shaft 181 are provided.

  One end of the first link arm 168 is attached to a shaft 186 that stands up from the substrate 166. The other end of the first link arm 168 is rotatable about a shaft 186 as a rotation axis. A second wire 155 and a third wire 160 are connected to the other end of the first link arm 168. The other end of the first link arm 168 is urged clockwise by the urging force of the spring 176. As a result, the second wire 155 and the third wire 160 are pulled toward the first link arm 168.

  One end of the second link arm 170 and the lower end of the third lever 174 are fixed. The third lever 174 and the second link arm 170 are attached to a shaft 188 erected from the substrate 166. The upper end portion of the third lever 174 is rotatable. The other end portion of the second link arm 170 is rotatable. The other end portion of the second link arm 170 and one end portion of the third link arm 172 are pivotally attached. The other end portion of the third link arm 172 and the first link arm 168 are axially attached by the engagement shaft 181. The engagement shaft 181 is disposed between one end and the other end of the first link arm 168. In the braking device 136, the substrate 166, the first link arm 168, the second link arm 170, and the third link arm 172 are the link mechanism 182. The first link arm 168, the second link arm 170, the third link arm 172, the third lever 174, and the caliper 145 are the braking portion 183.

  The other end of the fourth lever 178 is attached to a shaft 190 that stands up from the substrate 166. The other end of the fourth lever 178 is rotatable about a shaft 190 as a rotation axis. One end of the fourth lever 178 extends above the other end. An engagement groove 191 is formed between one end and the other end of the fourth lever 178. The fourth lever 178 is urged counterclockwise by the urging force of the spring 180. A first wire 154 is connected to the fourth lever 178. When the first wire 154 is pulled, one end of the fourth lever 178 is rotated clockwise. In the braking device 136, the fourth lever 178 and the spring 180 are the braking restriction unit 184.

  FIG. 17A is a partially enlarged view of FIG. The other end of the first link arm 168 is rotated clockwise by the biasing force of the spring 176. As a result, the third lever 174 is rotated counterclockwise. The braking unit 183 is in a braking posture. The third wire 160 is pulled toward the first link arm 168 side. In FIG. 17A, the first wire 154 is drawn to the detection device 134 side. One end of the fourth lever 178 is rotated clockwise against the biasing force of the spring 180. The braking restriction unit 184 is in an unrestricted posture.

  In FIG. 17B, the first wire 154 is loosened. One end of the fourth lever 178 is rotated counterclockwise by the biasing force of the spring 180. The fourth lever 178 is in contact with the engagement shaft 181. The braking unit 183 is in a braking posture, and the braking restriction unit 184 is in a restricted posture.

  In FIG.17 (c), the upper end part of the 3rd lever 174 is rotated clockwise. The other end of the first link arm 168 is rotated counterclockwise. The third wire 160 is loosened. The engagement shaft 181 is rotated counterclockwise about the shaft 186. The rotated engagement shaft 181 is engaged with the engagement groove 191. The braking unit 183 is in a non-braking posture, and the braking restriction unit 184 is in a restricted posture.

  FIG. 18 (a) shows a part of the braking device 136 in the same use state as FIG. 17 (c). In FIG. 18B, the first wire 154 is drawn downward. One end of the fourth lever 178 is rotated clockwise against the biasing force of the spring 180. The engagement between the engagement shaft 181 and the engagement groove 191 is released. The braking unit 183 is in the non-braking posture, and the braking limiting unit 184 is in the non-limiting posture. FIG. 18C is the same as the use state of FIG. 17A, and description of the state is omitted.

  Until the user is seated on the wheelchair 132, the detection device 134 is in the state of FIG. The sensor wire 147 is loosened. The first wire 154 is pulled toward the arm 150 side. As shown in FIG. 17A, in the braking device 136, the first wire 154 is pulled. The other end of the first link arm 168 rotates clockwise. The third wire 160 is pulled toward the first link arm 168 side. As shown in FIG. 15A, in the caliper 145, the other end portion of the arm 158 is rotated clockwise. A friction material (not shown) sandwiches the disk 144. The rotation of the wheel 10 of the wheelchair 132 is braked. The braking unit 183 is in a braking posture.

  A user sits on a wheelchair 132. As shown in FIG. 14B, the seat sheet 16, the cushion 149, and the bottom plate 151 are bent. The sensor wire 147 is pulled from the arm 150 side to the frame 148 side. The arm 150 rotates and the first wire 154 is loosened. As shown in FIG. 17B, one end of the fourth lever 178 is rotated counterclockwise. The fourth lever 178 is in contact with the engagement shaft 181. The braking restriction unit 184 changes from the non-restricted posture to the restricted posture. In FIG. 17B, the braking device 136 brakes the rotation of the wheel 10.

  The user rotates the upper end of the third lever 174 clockwise. The other end of the first link arm 168 rotates counterclockwise. The engagement shaft 181 engages with the engagement groove 191. Thereby, the 1st link arm 168 is hold | maintained the attitude | position rotated counterclockwise. The third wire 160 is loosened. The biasing force that rotates the other end 164 of the arm 158 of the caliper 145 clockwise is released. As shown in FIG. 15B, the arm 158 rotates counterclockwise. The force with which the friction material is pressed against the disk 144 is released. Thereby, the braking of the rotation of the wheel 10 is released. The braking unit 183 changes from a braking posture to a non-braking posture. A user operates the hand rim to run the wheelchair 132.

  A user stands up from the wheelchair 132 at the destination. The sensor wire 147 that has pulled the arm 150 is loosened. The arm 150 rotates and the first wire 154 is pulled toward the arm 150 side. One end of the fourth lever 178 in FIG. 18A is rotated clockwise. The engagement between the engagement shaft 181 and the engagement groove 191 is released. The braking device 136 changes from the state shown in FIG. 18A to the state shown in FIG. The braking restriction unit 184 changes from the restricted posture to the non-restricted posture. Since the engagement between the engagement shaft 181 and the engagement groove 191 is released, the other end of the first link arm 168 is rotated clockwise. The third wire 160 is pulled. In the caliper 145 shown in FIG. 15B, the other end of the arm 158 is rotated clockwise. The caliper 145 changes from the state of FIG. 15B to the state of FIG. A braking device 136 brakes the rotation of the wheel 10. The braking unit 183 changes from the non-braking posture to the braking posture.

  In this wheelchair 132, the rotation of the wheel 10 is braked when the user stands up. In the wheelchair 132, the state where the rotation of the wheel 10 is braked is maintained. The user can get on and off the wheelchair 132 safely. Further, as shown in FIG. 18A, the non-braking posture is maintained by engaging with the braking restriction portion 184 in the non-braking posture. In addition, the fourth lever 178 can be operated while the user is seated on the wheelchair 132 in a state where the vehicle can travel in the posture of the braking 183 shown in FIG. One end of the fourth lever 178 is gripped and rotated clockwise. The rotation of the wheel 10 is braked in the same way as when the above-mentioned user stands up. The braking device 136 can brake the wheel 10 while the user is seated.

  In the wheelchair 132, after the user is seated, the braking of the rotation of the wheel 10 can be released. When the user is not seated, the braking device 136 brakes the rotation of the wheel 10. On the other hand, when the user is seated, a state in which the braking of the rotation of the wheel 10 by the braking device 136 is released can be maintained.

  Furthermore, a method for releasing braking by an assistant while the user is not seated on the wheelchair 132 will be described. FIG. 19A shows a state of the braking device 136 of the wheelchair 132 in which the user is not seated. FIG. 19A is in the same state as FIG. The rotation of the wheel 10 is braked. An assistant stands behind the wheelchair 132. The assistant holds the pusher lever 8 together with the pusher 34. The second wire 155 is pulled.

  As a result, the other end of the first link arm 168 rotates counterclockwise. The first link arm 168 shifts from the state shown in FIG. 19A to the state shown in FIG. The state shown in FIG. 19B is the same as that shown in FIG. The other end of the first link arm 168 is rotated counterclockwise against the urging force of the spring 176. The braking of the rotation of the wheel 10 is released. The braking unit 183 changes from a braking posture to a non-braking posture.

  In other words, the operation of the pusher lever 8 cancels the prevention of the rotation of the wheel 10. An assistant can move the wheelchair 132 in a so-called “empty state” in which the user is not seated while pulling the pusher lever 8. When the assistant releases his hand from the pusher lever 8, the first link arm 172 presses the brake plate 66 against the wheel 10 by the urging force of the spring 176. By releasing the hand from the pusher lever 8, the braked state returns to the state shown in FIG.

  Although the wheelchair control device has been described here, the control device can be used for a vehicle including a seat and a wheel on which a person is placed. Examples of such vehicles include a wheelchair, a bicycle and a stroller. This braking device can be used for a walking aid provided with a support portion for supporting a person and wheels. Examples of such walking aids include a walker, a silver car (an elderly car), and a cart (cart).

  For example, the walker includes a support portion that supports a person. A person walks with the weight applied to the support portion. In other words, a person walks while being supported by this support. The detection device of this control device detects a state in which the support unit supports a person and a state in which the person is not supported. The configuration of the braking device of this control device is the same as that of the wheelchair control device described above, and the description thereof is omitted. Not only a walker but also a silver car and a cart can be provided with a support portion that supports the weight of a person.

  This control device can be widely used in vehicles and walking aids that include a seat or a support and wheels.

2, 110, 132 ... Wheelchair 4 ... Main frame 6 ... Back frame 8 ... Pusher lever 10 ... Wheel 14 ... Caster 16 ... Seat seat 18, 134 ... Detection device 20, 149 ... Cushion 22, 112, 136 ... Braking device 26 ... First cable 28 ... Second cable 27, 113, 146 ... Control device 34 ... Pusher 36 ... Caster frame 39 ... Cover 40 ... Lower plate 42 ... Hinge 44 ... Upper plate 46, 72, 78 ... Spring 52 ... First wire 54 ... First tube 58, 90, 128 ... stopper 62, 114 ... substrate 64 ... brake rod 66, 122 ... brake plate 67 ... rod spring 68 ... first lever 70 ...・ Push rod 74 ・ ・ ・ first arm 76 ・ ・ ・ restricting lever 80 ・ ・ ・ pin 82 ・ ・ ・ second arm 84,86 ・ ・ ・ bearing 88,102 ・ ・ ・ claw 89,108 ・ ・ ・ projection 91 , 130: Braking part 92, 184 ... Braking restriction part 93 ... First large diameter part 94 ... Second large diameter part 96 ... Third large diameter part 97, 104 ... Stop surface 98, 106 ... Tapered surface 99 ... Second wire 100 ... Ratchet teeth 116 ... First link arm 118 ... Second link arm 120 ... Third link arm 124 ... Second lever 126 ... Locking plate 138 ... First cable 140 ... Second cable 142 ... Third cable 144 ... Disc 145 ... Caliper 147 ... Sensor wire 148・ ・ Frame 150 ・ ・Arm 151 ... Bottom plate 152 ... Side plate 153 ... Shaft 154 ... First wire 155 ... Second wire 157 ... Main body 158 ... Arm 160 ... Third wire 168 ... First link arm 170 ... second link arm 172 ... third link arm 174 ... third lever 176 ... spring 178 ... fourth lever 180 ... spring 181 ... engagement Coaxial shaft 182 ... Link mechanism 183 ... Brake unit 184 ... Brake limiting unit 186, 188, 190 ... Shaft

Claims (9)

(1) Main frame,
(2) wheels attached to this main frame,
(3) Seat seat for the user to sit on,
(4) a detection device that detects whether the user is seated on the seat seat and a state in which the user is not seated; and (5) a braking device that brakes the rotation of the wheel.
The braking device includes a braking unit that prevents rotation of the wheel, and an operation lever .
The braking unit is capable of changing the posture between a braking posture that prevents the rotation of the wheel and a non-braking posture that does not prevent the rotation of the wheel,
When the seating seat changes from a seated state to a non-sitting state, the braking section changes to a braking posture, and when the seating seat changes from a non-sitting state to a sitting state, the braking posture Is maintained ,
When the user is seated on the seat, the operating lever is operated so that the braking unit can change its posture from a braking posture to a non-braking posture .
A wheelchair in which the braking portion changes to the braking posture when the braking portion is changed to the non-braking posture after the braking portion is brought into the non-braking posture by the operation of the operation lever . A back frame extending upward from the main frame, a pusher provided in the back frame, a release lever, and a release wire;
The release lever is pivotally attached to the back frame. The release lever is pulled by turning it toward the pusher, and the release lever is returned by turning it away from the pusher. Configured to be
The release lever and braking device are connected by a release wire,
When the user is not seated, when the release lever is pulled, the braking portion changes from the braking posture to the non-braking posture, and when the release lever is returned, the braking portion returns from the non-braking posture to the braking posture. The wheelchair according to claim 1. The braking device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit;
The braking restriction unit can change between a restriction posture in which the braking portion in the non-braking posture is maintained in a non-braking posture and a non-restriction posture in which the braking portion does not restrict a change in posture between the braking posture and the non-braking posture. Has been
When the user is seated on this seat, the braking restriction is in the restricted posture,
The wheelchair according to claim 1 or 2, wherein when the user is not seated on the seat seat, the braking restriction portion is in an unrestricted posture. The braking part comprises a disc, a caliper and a friction material;
This disc is fixed to the wheel in one piece,
The braking posture is a posture in which the caliper presses the friction material against the disc.
The wheelchair according to any one of claims 1 to 3, wherein the non-braking posture is a posture in which the caliper does not press the friction material against the disk. The braking device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit;
The braking restriction unit can change between a restriction posture in which the braking portion in the non-braking posture is maintained in a non-braking posture and a non-restriction posture in which the braking portion does not restrict a change in posture between the braking posture and the non-braking posture. Has been
When the user is seated on this seat, the braking restriction is in the restricted posture,
When the user is not seated on this seat, the braking restriction is in an unrestricted posture,
With a third wire,
The braking unit includes a link mechanism,
This third wire connects the link mechanism and caliper,
This link mechanism is capable of changing posture between braking posture and non-braking posture,
The braking restriction portion has a second elastic body and a restriction lever that can be engaged with the link mechanism,
Due to the urging force of the second elastic body, the limiting lever is urged in the direction in which it can engage with the link mechanism,
The wheelchair according to claim 4, wherein the restriction lever in the non-restricted posture is separated from the biasing force of the second elastic body in a direction opposite to the direction in which the restriction lever can be engaged with the link mechanism. A control device used for a vehicle including a seat and a wheel for carrying a person,
A detection device and a braking device;
The detection device is configured to detect a state where the user is seated on the seat and a state where the user is not seated,
The braking device includes a braking unit that prevents rotation of the wheel, and an operation lever .
The braking unit is capable of changing the posture between a braking posture that prevents the rotation of the wheel and a non-braking posture that does not prevent the rotation of the wheel,
When the seating seat changes from a seated state to a non-sitting state, the braking section changes to a braking posture, and when the seating seat changes from a non-sitting state to a sitting state, the braking posture Is maintained ,
A state where the user in the seat the seat is seated, are the posture changeable to a non-braking position from the braking unit is a braking position by the operating lever is operated,
A control device in which the braking portion changes to the braking posture when the braking portion is changed from the seating position to the non-sitting state after the braking portion is brought into the non-braking posture by the operation of the operation lever . The braking device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit;
The braking restriction unit changes between a restriction posture in which the braking portion in the non-braking posture is maintained in the non-braking posture and a non-restriction posture in which the posture change between the braking posture and the non-braking posture of the braking portion is not restricted. Has been made possible,
When the user is seated on this seat, the braking restriction is in the restricted posture,
The control device according to claim 6 , wherein the braking restriction portion is in an unrestricted posture when the user is not seated on the seat. A control device used for a walking aid including a support section and wheels for supporting a person,
A detection device and a braking device;
The detection device is configured to detect a state where the user is supported by the support portion and a state where the user is not supported,
The braking device includes a braking unit that prevents rotation of the wheel, and an operation lever .
The braking unit is capable of changing the posture between a braking posture that prevents the rotation of the wheel and a non-braking posture that does not prevent the rotation of the wheel,
When the support unit changes from a state where the user is supported to an unsupported state, the braking unit changes to a braking posture, and when the user changes from an unsupported state to a supported state, the braking posture Is maintained ,
A state where the user on the support portion is supported are the posture changeable to a non-braking position from the braking unit is a braking position by the operating lever is operated,
A control device in which the braking portion changes to a braking posture when the braking portion is changed from a state where the user is supported by the support portion to a state where the user is not supported after the braking portion is moved to the non-braking posture by the operation of the operation lever . The braking device includes a braking restriction unit that restricts prevention of wheel rotation by the braking unit;
The braking restriction unit changes between a restriction posture in which the braking portion in the non-braking posture is maintained in the non-braking posture and a non-restriction posture in which the posture change between the braking posture and the non-braking posture of the braking portion is not restricted. Has been made possible,
When the user is supported by this support part , the braking restriction part is in a restricted posture,
The control device according to claim 8 , wherein when the user is not supported by the support portion , the braking restriction portion is in an unrestricted posture.

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