WO2020017104A1 - Single-handedly operable wheelchair - Google Patents
Single-handedly operable wheelchair Download PDFInfo
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- WO2020017104A1 WO2020017104A1 PCT/JP2019/013123 JP2019013123W WO2020017104A1 WO 2020017104 A1 WO2020017104 A1 WO 2020017104A1 JP 2019013123 W JP2019013123 W JP 2019013123W WO 2020017104 A1 WO2020017104 A1 WO 2020017104A1
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- Prior art keywords
- hand rim
- pair
- arm members
- wheel
- wheelchair
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/02—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs propelled by the patient or disabled person
Definitions
- the present invention generally relates to a manual wheelchair (hereinafter simply referred to as “wheelchair”). More particularly, the present invention relates to a wheelchair equipped with a single hand rim on each of the left and right sides and can be easily operated with one hand.
- a wheelchair is basically configured such that a wheelchair user (hereinafter, simply referred to as a “user”) operates left and right wheels with his / her own hand to perform operations such as forward, backward, left turn, right turn, and the like.
- a wheelchair that can be operated with one hand only by a healthy hand even if the person is disabled on the left or right body has been proposed (see Patent Document 1).
- the wheelchair described in Patent Literature 1 disposes a double hand rim outside wheels on a side where a healthy body of a user is located, and operates the hand rim with a healthy hand to move the wheelchair. Is configured to be controlled.
- Patent Document 7 can be operated with one hand, so that it is easy to use for a person with a disability. It was also useful in sports competitions using wheelchairs such as wheelchair tennis and wheelchair basketball.
- the present invention seeks ease of use from a different viewpoint from the wheelchair described in Patent Literature 7, and aims to provide a wheelchair that can be easily operated with one hand without having to change the hand rim.
- a wheelchair operable with one hand has a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat, and is disposed concentrically with an axle of each of the wheels.
- a pair of left and right hand rims respectively connected to spokes, a rotation shaft for transmitting a rotational force generated by rotating the one hand rim to a wheel on the opposite side via a drive mechanism, and a rotation shaft for one side;
- a pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim to wheels on the same side via the drive mechanism, wherein the drive mechanism is mounted so as to be concentric with the center of the axle.
- a movable shaft member slidable in a horizontal direction, a rotating shaft side disk slidably disposed on the rotating shaft side of the movable shaft member, and a rotation of the movable shaft member.
- a hand rim-side disc slidably disposed on the side opposite to the side where the side disc is located, and a force device for transmitting inward or outward movement of the hand rim to the movable shaft member.
- the force applying device is slidably attached to the movable shaft member, has a support member that rotates together with the movable shaft member, a pair of arm members, another pair of arm members, Is attached at a position of 0 degree to the support member by a first pin so as to be rotatable in a horizontal plane.
- the first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees, and a central pin is formed by a third pin.
- One of the other pair of arm members rotatably mounted in a vertical plane at a position of 90 degrees of the holding member, and a center position of the support member at a position of 270 degrees by a fourth pin.
- a second link device is formed by the other arm member of the another pair of arm members rotatably attached in a vertical plane, and when the hand rim is moved inward or outward, First and second link devices are compressed or expanded to slide the movable shaft member inward or outward, and the surface-contacting engaging portion provided on the rotating shaft side disk and the hand rim A surface-contacting engaging portion provided on the side disk selectively engages with a surface-contacting engaging portion provided on the rotating shaft and / or a surface-contacting engaging portion provided on the wheel hub. The times The rolling force is transmitted to a desired wheel.
- a wheelchair operable with one hand has a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat, and is arranged concentrically with an axle of each of the wheels.
- a pair of left and right hand rims respectively connected to spokes, a rotating shaft for transmitting a rotational force generated by rotating the one hand rim to the opposite wheel via the driving mechanism,
- a pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim to wheels on the same side via the drive mechanism, such that the drive mechanism is concentric with the center of the axle.
- a mounted movable shaft member slidable in the horizontal direction, a rotating shaft side disk slidably disposed on the rotating shaft side of the movable shaft member, and a movable shaft member of the movable shaft member.
- a hand rim-side disc slidably disposed on the side opposite to the side where the turning shaft-side disc is located, and a force applying device for transmitting inward or outward movement of the hand rim to the movable shaft member.
- the force device has a support member slidably attached to the movable shaft member and rotating together with the movable shaft member, a pair of arm members, and another pair of arm members.
- a central part is rotatably mounted in a horizontal plane at a position of 0 degree on the support member by a first pin, and one of the arm members of the pair of arm members;
- a first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees on the support member, and a central portion is formed by a third pin.
- One of the other pair of arm members which is rotatably mounted in a vertical plane at a position of 90 degrees on the support member and one of the other pair of arm members, and a center pin at a position of 270 degrees of the support member by a fourth pin.
- a second link device is formed by the other arm member of the another pair of arm members, which is rotatably mounted in a vertical plane at a position, and when the hand rim is moved inward or outward, The first and second link devices are compressed or expanded to slide the movable shaft member inward or outward, and the spur gear or the internal gear provided on the rotating shaft side disk and the hand rim
- a spur gear or internal gear provided on the side disk selectively engages with an internal gear or spur gear provided on the rotating shaft and / or an internal gear or spur gear provided on the wheel hub, and The rotational force is transmitted to a desired wheel.
- the number of hand rims provided on each of the right and left sides is one instead of two, it is not necessary to change the hand rim at the time of operation, so that the user is very convenient to use. Good effect can be obtained.
- the wheelchair of the present invention can be used by people other than those who are physically disabled. That is, the wheelchair of the present invention is useful when a person who has healthy both hands moves in a wheelchair while holding an article (smartphone, tableware, umbrella, etc.) in one hand. It is also useful when playing sports such as tennis and basketball in a wheelchair.
- FIG. 1 is a right side view showing a wheelchair according to a preferred embodiment of the present invention.
- FIG. 2 is a rear view of the wheelchair of FIG.
- FIG. 2 is a diagram illustrating a configuration of a drive mechanism of the wheelchair of FIG. 1.
- FIG. 4A is an enlarged view of a portion 4a in FIG. 3, and
- FIG. 4B is a cross-sectional view taken along line 4b-4b in FIG. 4A.
- FIG. 5A is an enlarged sectional view of the drive mechanism when the hand rim is moved inward
- FIG. 5B is an enlarged sectional view of the drive mechanism when the hand rim is moved outward.
- FIG. 2 is a perspective view schematically showing a force device of the wheelchair of FIG. 1.
- FIG. 8A is a diagram showing a state in which a pair of arm members are attached to a disk
- FIG. 8B is a diagram showing a state in which another pair of arm members is attached to a disk. It is a series of schematic diagrams for explaining the operation state of the wheelchair. It is a series of other schematic diagrams for demonstrating the operation state of a wheelchair.
- FIG. 1 is a right side view showing a wheelchair according to a preferred embodiment of the present invention
- FIG. 2 is a rear view of the wheelchair of FIG.
- a wheelchair according to a preferred embodiment of the present invention which is generally indicated by reference numeral 10 in FIG. 1, includes a frame 12 forming a skeleton of the wheelchair, right wheels 14a and left wheels 14b, a pair of casters 16a, 16b, and a seat. 18 is provided.
- the wheelchair 10 is in principle symmetrical with respect to its center line and has the same components on each of the left and right sides.
- reference numerals of components located on the right side of the wheelchair 10 "B" is added to the reference numerals of the components located on the left side of the wheelchair 10.
- inside means a side where a user sitting in a wheelchair is located
- outside means a side opposite to a side where the user is located.
- wheel covers 14a1 and 14b1 are respectively attached so as not to pinch a finger between the wheel spokes 14a2 and 14b2, but the equipment of the wheel covers 14a1 and 14b1 is optional. .
- the wheelchair 10 also includes a hand rim 20a disposed outside the right wheel 14a concentrically with the axle 24a of the right wheel 14a.
- the hand rim 20a is connected to the hand rim spoke 20a1. Although four hand rim spokes 20a1 are shown in FIG. 1, the number of hand rim spokes 20a1 is not limited to this.
- FIG. 3 is a diagram showing the configuration of the drive mechanism of the wheelchair 10
- FIG. 4 (a) is a diagram showing a portion 4a of FIG. 3, showing a main part of the drive mechanism.
- the wheelchair 10 includes an axle 54a that supports the right wheel 14a.
- the axle 54a has a circular disk portion 54a1 having an opening 54a2 at the center, a cylindrical inner cylinder portion 54a3 fixed inside the disk portion 54a1 so as to be concentric with the disk portion 54a1, and a disk portion. Outside the disk 54a1, there is a cylindrical outer cylinder 54a4 fixed concentrically with the disk 54a1, and the inner cylinder 54a3 is attached to the frame 12 via the mounting boss 56a and the mounting sleeve 58a. Installed.
- Reference numeral 54a5 is a known lever member with an axle fixing spring used for fixing the axle 54a.
- a rotating shaft 60a is rotatably disposed on the inner cylinder portion 54a3 of the axle 54a.
- the rotating shaft 60a has a cylindrical shaft portion 60a1 and a disk-shaped disk portion 60a2 provided at an outer end of the shaft portion 60a1 and located in an outer cylindrical portion 54a4 of the axle 54a.
- An engagement portion 60a3 (see FIG. 5B) is arranged on the outer periphery.
- the engaging portion 60a3 which comes into surface contact is formed of a material having a high coefficient of friction (for example, rubber) or a tooth surface having a shape complementary to an engaging surface of the engaging portion 68a3 described later, or is provided with a high friction coating. .
- the shaft portion 60a1 is rotatably supported in the inner cylindrical portion 54a3 by a bearing 60a4.
- a rotation shaft 60b having a similar configuration is provided in a corresponding portion on the left side of the wheelchair 10.
- the shaft portions 60a1 and 60b1 may be integrally formed as in the case of the shaft portions 30a1 and 30b1, or may be formed separately and connected to each other via a connection sleeve (not shown).
- the rotating shaft of the book may be formed.
- the wheel hub 62a is rotatably supported by the axle 54a.
- the wheel hub 62a has a circular disk portion 62a1 having an opening 62a2 at the center and a cylindrical inner portion extending outward around the opening 62a2 of the disk portion 62a1 and fixed so as to be concentric with the disk portion 62a1. It has a cylindrical portion 62a3 and a cylindrical outer cylindrical portion 62a4 which extends inward on the outer periphery of the disk portion 62a1 and is fixed so as to be concentric with the disk portion 62a1.
- An engagement portion 62a5 (see FIG. 5A) is disposed at an inner end of the inner cylindrical portion 62a3.
- the outer cylinder part 62a4 is rotatably supported by the outer cylinder part 54a4 of the axle 54a by a bearing 62a6.
- a wheel spoke 14a2 of the right wheel 14a is connected to an outer periphery of the outer cylindrical portion 62a4 of the wheel hub 62a.
- the engaging portion 62a5 in surface contact is formed of a material having a high coefficient of friction (for example, rubber) or a tooth surface having a shape complementary to an engaging surface of an engaging portion 70a3 described later, or is provided with a high friction coating. ing.
- the wheelchair 10 also includes an outer shaft 64a having a cylindrical inner portion 64a1 and a cylindrical outer portion 64a2 connected to each other by an elastic connecting member 64a3, and the inner portion 64a1 is formed by a bearing 64a4.
- the wheel hub 62a is rotatably supported by the inner cylinder portion 62a3.
- the through hole 64a5 of the inner portion 64a1 and the through hole 64a6 of the outer portion 64a2 are spline holes, respectively, and a movable shaft member 66a of a spline shaft described later is inserted into the through holes 64a5 and 64a6.
- the elastic connecting member 64a3 is formed of a shape memory material, and unless a force is applied by a later-described force applying device 80a, the engaging portion 68a3 is engaged with the central position (as shown in FIG. 4A). (The position where the engaging portion 70a3 comes into surface contact with the engaging portion 62a5).
- an elastic member for example, a spring
- a spring that holds the center position when no force is applied by the force applying device 80a may be used.
- the wheelchair 10 also includes a movable shaft member 66a having a columnar shape as a whole.
- the movable shaft member 66a has an end ridge 66a1 disposed at the inner end and an intermediate ridge 66a2 disposed in the middle, and the end ridge 66a1 and the intermediate ridge are provided.
- a portion 66a3 between the outer shaft 64a2 and the outer portion 66a4 of the intermediate raised portion 66a2 is a spline shaft. It is slidably disposed in the hole 64a6.
- the wheelchair 10 also includes a rotating shaft side disk 68a and a hand rim side disk 70a.
- the rotating shaft side disk 68a has a cylindrical portion 68a1 and a disk portion 68a2 located at the inner end of the cylindrical portion 68a1, and an engaging portion 68a3 (see FIG. 6) is arranged on the inner surface of the disk portion 68a2.
- the hand rim-side disk 70a has a cylindrical portion 70a1 and a disk portion 70a2 located at an outer end of the cylindrical portion 70a1, and an engaging portion 70a3 (see FIG. 6) is arranged on an outer surface of the disk portion 70a2. ing.
- the through hole of the cylindrical portion 68a1 and the through hole of the cylindrical portion 70a1 are spline holes.
- the cylindrical portion 68a1 of the rotating shaft side disk 68a is slidably disposed on the portion 66a3, and the cylindrical portion 70a1 of the hand rim side disk 70a is also slidably disposed on the portion 66a3.
- a spring 72a for urging the rotating shaft side disk 68a and the hand rim side disk 70a away from each other is mounted on the cylindrical portion 68a1 of the rotating shaft side disk 68a and the cylindrical portion 70a1 of the hand rim side disk 70a.
- the engaging portions 68a3 and 70a3 that come into surface contact are formed of a material (for example, rubber) having a high coefficient of friction or a tooth surface complementary to the engaging portions 60a3 and 62a5, or have a high friction coating. .
- FIG. 6 is a series of diagrams showing the interrelationship between the movable shaft member 66a, the rotating shaft side disk 68a, and the hand rim side disk 70a (in FIG. 6, in order to clearly show the interrelationship between the components, the spring 72a is Not shown).
- FIG. 6A shows a state in which the hand rim 20a is at the center position (that is, the position at which the hand rim 20a is not moved inward or outward), and the rotating shaft side disk 68a is moved to the innermost position by the spring 72a.
- the hand rim-side disc 70a is located at the outermost position, whereby the engaging portion 68a3 of the disc portion 68a2 of the rotating shaft-side disc 68a comes into surface contact with the engaging portion 60a3 of the rotating shaft 60a, and The engaging portion 70a3 of the disc portion 70a2 of the hand rim-side disc 70a is in surface contact with the engaging portion 62a5 of the wheel hub 62a.
- FIG. 6B shows a state in which the hand rim 20a is at the inward position, and the hand rim-side disc 70a is pushed by the intermediate raised portion 66a2 of the movable shaft member 66a against the spring force of the spring 72a.
- FIG. 6C shows a state in which the hand rim 20a is at the outer position, and the rotating shaft side disk 68a is pushed by the end protrusion 66a1 of the movable shaft member 66a against the spring force of the spring 72a.
- the engagement between the engaging portion 68a3 and the engaging portion 60a3 is released (see FIG. 5B).
- the outer plate 74a is fixed to the inner end of the outer portion 64a2 of the outer shaft 64a, and the hand rim spoke 20a1 is connected to the outer plate 74a.
- An inner plate 76a is attached to the outer end of the inner portion 64a1 of the outer shaft 64a.
- the wheelchair 10 further includes a force applying device 80a for transmitting the inward or outward movement of the hand rim 20a to the movable shaft member 66a.
- FIG. 7 is a perspective view schematically showing the force applying device 80a.
- the force applying device 80a includes a support member 82a slidably attached to the movable shaft member 66a, a pair of arm members 84a and 86a, and another pair of arm members 88a and 90a. Note that the support member 82a cannot rotate independently by a spline, but rotates together with the movable shaft member 66a.
- FIG. 8A is a view showing a state in which the pair of arm members 84a and 86a are attached to the support member 82a.
- the arm member 84a is rotatably mounted in a horizontal plane at a position of 0 degrees of the support member 82a at a substantially central position by a pin 84a1.
- a roller is attached to one end 84a2 of the arm member 84a, and a roller is attached to the other end 84a3.
- These rollers are housed in roller housing members 84a4 and 84a5, respectively.
- the arm member 86a is rotatably mounted on the support member 82a at a position of 180 degrees in a horizontal plane at a position substantially at the center by a pin 86a1.
- a roller is attached to one end 86a2 of the arm member 86a, and a roller is attached to the other end 86a3.
- These rollers are housed in roller housing members 86a4 and 86a5, respectively.
- FIG. 8B is a diagram showing a state in which the pair of arm members 88a and 90a are attached to the support member 82a.
- the arm member 88a is rotatably mounted in a vertical plane at a 90-degree position on the support member 82a at a substantially central position by a pin 88a1.
- a roller is attached to one end 88a2 of the arm member 88a, and a roller is attached to the other end 88a3.
- These rollers are housed in roller housing members 88a4 and 88a5, respectively.
- the arm member 90a is rotatably mounted in a vertical plane at a position of 270 degrees on the support member 82a by a pin 90a1 at a substantially central portion.
- a roller is attached to one end 90a2 of the arm member 90a, and a roller is attached to the other end 90a3. These rollers are housed in roller housing members 90a4 and 90a5, respectively.
- the arm members 88a and 90a are not illustrated in FIG. 8A, and the arm members 84a and 86a are illustrated in FIG. Are not shown.
- the outer surfaces of the roller housing members 84a5, 86a4, 88a5, and 90a4 are fixed to the outer plate 74a, and the inner surfaces of the roller housing members 84a4, 86a5, 88a4, and 90a5. Are fixed to the inner plate 76a.
- the configuration of the right side portion of the wheelchair 10 has mainly been described, but the left side portion of the wheelchair 10 also has substantially the same configuration as the right side portion. That is, when describing the main components, 20b is a hand rim, 54b is an axle, 60b is a rotating shaft, 62b is a wheel hub, 64b is an outer shaft, 66b is a movable shaft member, 68b is a rotating shaft side disk, and 70b is a hand rim side.
- the disk and 80b respectively indicate a force applying device.
- FIG. 9 is a schematic plan view showing a right turn or left turn traveling of the wheelchair 10
- FIG. 10 is a schematic plan view showing a straight traveling of the wheelchair 10.
- the right wheel 14a rotates while the left wheel 14b does not rotate, whereby the wheelchair 10 turns left (see FIG. 9C).
- the user turns the hand rim 20b forward with the left hand gripping the hand rim 20b.
- the left wheel 14b rotates while the right wheel 14a does not rotate, whereby the wheelchair 10 turns right (see FIG. 9D).
- the force applying device 80a of the wheelchair 10 compresses or expands the two X-shaped link devices formed by the two pairs of arm members 84a, 86a, 88a, 90a to translate and move the movable shaft members 66a, 66b. It is configured to slide.
- the wheelchair 10 is configured so that the rotational force is transmitted by the engaging portions 60a3 and 68a3 and the engaging portions 62a5 and 70a3 that are in surface contact, but the engagement between the spur gear and the internal gear is performed. May be configured to transmit the rotational force.
- wheelchair component details shown are merely exemplary and may be modified.
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Abstract
Provided is a wheelchair that can be operated readily with either the left or right hand. The invention comprises: left and right handrims; a rotary shaft for transmitting rotational force generated by rotating a handrim on one of the sides to the wheel on the opposite side via a drive mechanism; and a wheel hub for transmitting the rotational force generated by rotating the handrim on the one of the sides to the wheel on the same side via the drive mechanism. The constitution of the invention is such that: the drive mechanism comprises a mobile shaft member, a rotary shaft side disc, a handrim side disc, and a force application device comprising a linking device for transmitting the handrim movement to the mobile shaft member; and, when the handrim is moved, the linking device is press-contracted or press-expanded, causing the mobile shaft member to slide, so that an engaging part on the rotary shaft side disc and an engaging part on the handrim side disc selectively engage with an engaging part on the rotary shaft and/or an engaging part on the wheel hub, transmitting the rotational force to the wheel on the intended side.
Description
本発明は一般に、手動式車椅子(以下、単に「車椅子」という)に関する。より詳細には、本発明は、左右の側に単一のハンドリムをそれぞれ装備し、片手で容易に操作できる車椅子に関する。
The present invention generally relates to a manual wheelchair (hereinafter simply referred to as “wheelchair”). More particularly, the present invention relates to a wheelchair equipped with a single hand rim on each of the left and right sides and can be easily operated with one hand.
車椅子は基本的に、車椅子使用者(以下、単に「使用者」という)が自らの手で左右の車輪を操作することにより、前進、後退、左折、右折等の動作をさせるように構成されているが、左右いずれかの半身が不自由な人は、両手を自由に使えないため、一般的な車椅子を使用することが困難であった。そこで、左半身又は右半身の不自由な人であっても、健常な方の手のみで操作することができる片手操作可能な車椅子が提案されている(特許文献1参照)。特許文献1に記載された車椅子は、使用者の健常な半身が位置する側の車輪の外方に二重のハンドリムを配置し、健常な方の手でハンドリムを操作することによって、車椅子の動きを制御することができるように構成されている。
A wheelchair is basically configured such that a wheelchair user (hereinafter, simply referred to as a “user”) operates left and right wheels with his / her own hand to perform operations such as forward, backward, left turn, right turn, and the like. However, it is difficult for a person who has a disability in one of the right and left bodies to use a general wheelchair because they cannot use both hands freely. Therefore, a wheelchair that can be operated with one hand only by a healthy hand even if the person is disabled on the left or right body has been proposed (see Patent Document 1). The wheelchair described in Patent Literature 1 disposes a double hand rim outside wheels on a side where a healthy body of a user is located, and operates the hand rim with a healthy hand to move the wheelchair. Is configured to be controlled.
一方、左右の車輪を連結する回転軸と、レバーやクラッチ等の操作手段を連動させ、これらの操作手段を片手で操作することによって、所望のように制御することができる車椅子が提案されている(特許文献2~特許文献4参照)。また、左右の車輪の接続や接続解除を行うクラッチをレバーで行う車椅子(特許文献5参照)や、センサを利用して不意の運動を防止するブレーキ制御装置を備えた車椅子も提案されている(特許文献6)。
On the other hand, there has been proposed a wheelchair in which a rotating shaft connecting the left and right wheels and operating means such as a lever and a clutch are interlocked, and these operating means are operated with one hand so that desired control can be performed. (See Patent Documents 2 to 4). In addition, a wheelchair in which a clutch that connects and disconnects left and right wheels by a lever (see Patent Literature 5) and a wheelchair including a brake control device that uses a sensor to prevent unexpected movement have been proposed ( Patent Document 6).
上述の車椅子は、半身の不自由な人にとっては、操作し易いとは言い難いものであった。そこで、本発明者は、半身の不自由な人であっても、健常な方の手で容易に操作できる片手操作可能な車椅子を提案した(特許文献7参照)。
車 The wheelchairs described above were not easy to operate for people with physical disabilities. Therefore, the present inventor has proposed a one-handed wheelchair that can be easily operated by a healthy hand even for a person with a disability (see Patent Document 7).
特許文献7に記載された車椅子は、片方の手で操作できるものであるため、半身の不自由な人にとって、使い勝手のよいものであった。また、車椅子テニスや車椅子バスケットボールのような車椅子を使用するスポーツ競技でも有用であった。本発明は、特許文献7に記載された車椅子とは別の観点から使い勝手の良さを追求したものであって、ハンドリムの持ち替えの必要がなく、片手で容易に操作できる車椅子を提供することを目的としている。
(4) The wheelchair described in Patent Document 7 can be operated with one hand, so that it is easy to use for a person with a disability. It was also useful in sports competitions using wheelchairs such as wheelchair tennis and wheelchair basketball. The present invention seeks ease of use from a different viewpoint from the wheelchair described in Patent Literature 7, and aims to provide a wheelchair that can be easily operated with one hand without having to change the hand rim. And
本願請求項1に記載された片手操作可能な車椅子は、フレームと、右車輪及び左車輪と、右キャスタ及び左キャスタと、シートとを有し、前記各車輪の車軸と同心に配置され、ハンドリムスポークにそれぞれ連結された左右一対のハンドリムと、一方の側の前記ハンドリムを回転させることによって生ずる回転力を駆動機構を介して反対側の車輪に伝達するための回転軸と、一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して同じ側の車輪に伝達するための左右一対の車輪ハブとを備え、前記駆動機構が、前記車軸の中心と同心となるように取り付けられた水平方向に摺動可能な可動軸部材と、前記可動軸部材の前記回転軸側に摺動可能に配置された回転軸側ディスクと、前記可動軸部材の前記回転軸側ディスクの位置する側と反対側に摺動可能に配置されたハンドリム側ディスクと、前記ハンドリムの内方又は外方への移動を前記可動軸部材に伝達するための加力装置とを有し、前記加力装置が、前記可動軸部材に摺動可能に取り付けられ、前記可動軸部材と一緒に回転する支持部材と、一対のアーム部材と、別の一対のアーム部材とを有し、中央の個所が第1ピンによって前記支持部材の0度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち一方のアーム部材と、中央の個所が第2ピンによって前記支持部材の180度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち他方のアーム部材とによって、第1リンク装置が形成され、中央の個所が第3ピンによって前記支持部材の90度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち一方のアーム部材と、中央の個所が第4ピンによって前記支持部材の270度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち他方のアーム部材とによって、第2リンク装置が形成され、前記ハンドリムを内方又は外方に移動させると、前記第1および第2リンク装置が押し縮められ又は押し広げられて、前記可動軸部材を内方又は外方に摺動させ、前記回転軸側ディスクに設けられた面接触する係合部及び前記ハンドリム側ディスクに設けられた面接触する係合部が、前記回転軸に設けられた面接触する係合部及び/又は前記車輪ハブに設けられた面接触する係合部に選択的に係合して、前記回転力が所望の側の車輪に伝達されるように構成されていることを特徴とするものである。
A wheelchair operable with one hand according to claim 1 of the present application has a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat, and is disposed concentrically with an axle of each of the wheels. A pair of left and right hand rims respectively connected to spokes, a rotation shaft for transmitting a rotational force generated by rotating the one hand rim to a wheel on the opposite side via a drive mechanism, and a rotation shaft for one side; A pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim to wheels on the same side via the drive mechanism, wherein the drive mechanism is mounted so as to be concentric with the center of the axle. A movable shaft member slidable in a horizontal direction, a rotating shaft side disk slidably disposed on the rotating shaft side of the movable shaft member, and a rotation of the movable shaft member. A hand rim-side disc slidably disposed on the side opposite to the side where the side disc is located, and a force device for transmitting inward or outward movement of the hand rim to the movable shaft member. The force applying device is slidably attached to the movable shaft member, has a support member that rotates together with the movable shaft member, a pair of arm members, another pair of arm members, Is attached at a position of 0 degree to the support member by a first pin so as to be rotatable in a horizontal plane. One of the arm members of the pair of arm members, and a support member at the center is provided by a second pin. The first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees, and a central pin is formed by a third pin. One of the other pair of arm members rotatably mounted in a vertical plane at a position of 90 degrees of the holding member, and a center position of the support member at a position of 270 degrees by a fourth pin. A second link device is formed by the other arm member of the another pair of arm members rotatably attached in a vertical plane, and when the hand rim is moved inward or outward, First and second link devices are compressed or expanded to slide the movable shaft member inward or outward, and the surface-contacting engaging portion provided on the rotating shaft side disk and the hand rim A surface-contacting engaging portion provided on the side disk selectively engages with a surface-contacting engaging portion provided on the rotating shaft and / or a surface-contacting engaging portion provided on the wheel hub. The times The rolling force is transmitted to a desired wheel.
本願請求項2に記載された片手操作可能な車椅子は、フレームと、右車輪及び左車輪と、右キャスタ及び左キャスタと、シートとを有し、前記各車輪の車軸と同心に配置され、ハンドリムスポークにそれぞれ連結された左右一対のハンドリムと、一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して反対側の車輪に伝達するための回転軸と、一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して同じ側の車輪に伝達するための左右一対の車輪ハブとを備え、前記駆動機構が、前記車軸の中心と同心となるように取り付けられた水平方向に摺動可能な可動軸部材と、前記可動軸部材の前記回転軸側に摺動可能に配置された回転軸側ディスクと、前記可動軸部材の前記回転軸側ディスクの位置する側と反対側に摺動可能に配置されたハンドリム側ディスクと、前記ハンドリムの内方又は外方への移動を前記可動軸部材に伝達するための加力装置とを有し、前記加力装置が、前記可動軸部材に摺動可能に取り付けられ、前記可動軸部材と一緒に回転する支持部材と、一対のアーム部材と、別の一対のアーム部材とを有し、中央の個所が第1ピンによって前記支持部材の0度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち一方のアーム部材と、中央の個所が第2ピンによって前記支持部材の180度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち他方のアーム部材とによって、第1リンク装置が形成され、中央の個所が第3ピンによって前記支持部材の90度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち一方のアーム部材と、中央の個所が第4ピンによって前記支持部材の270度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち他方のアーム部材とによって、第2リンク装置が形成され、前記ハンドリムを内方又は外方に移動させると、前記第1および第2リンク装置が押し縮められ又は押し広げられて、前記可動軸部材を内方又は外方に摺動させ、前記回転軸側ディスクに設けられた平歯車又は内歯車及び前記ハンドリム側ディスクに設けられた平歯車又は内歯車が、前記回転軸に設けられた内歯車又は平歯車及び/又は前記車輪ハブに設けられた内歯車又は平歯車に選択的に係合して、前記回転力が所望の側の車輪に伝達されるように構成されていることを特徴とするものである。
A wheelchair operable with one hand according to claim 2 of the present application has a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat, and is arranged concentrically with an axle of each of the wheels. A pair of left and right hand rims respectively connected to spokes, a rotating shaft for transmitting a rotational force generated by rotating the one hand rim to the opposite wheel via the driving mechanism, A pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim to wheels on the same side via the drive mechanism, such that the drive mechanism is concentric with the center of the axle. A mounted movable shaft member slidable in the horizontal direction, a rotating shaft side disk slidably disposed on the rotating shaft side of the movable shaft member, and a movable shaft member of the movable shaft member. A hand rim-side disc slidably disposed on the side opposite to the side where the turning shaft-side disc is located, and a force applying device for transmitting inward or outward movement of the hand rim to the movable shaft member. The force device has a support member slidably attached to the movable shaft member and rotating together with the movable shaft member, a pair of arm members, and another pair of arm members. A central part is rotatably mounted in a horizontal plane at a position of 0 degree on the support member by a first pin, and one of the arm members of the pair of arm members; A first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees on the support member, and a central portion is formed by a third pin. One of the other pair of arm members, which is rotatably mounted in a vertical plane at a position of 90 degrees on the support member and one of the other pair of arm members, and a center pin at a position of 270 degrees of the support member by a fourth pin. A second link device is formed by the other arm member of the another pair of arm members, which is rotatably mounted in a vertical plane at a position, and when the hand rim is moved inward or outward, The first and second link devices are compressed or expanded to slide the movable shaft member inward or outward, and the spur gear or the internal gear provided on the rotating shaft side disk and the hand rim A spur gear or internal gear provided on the side disk selectively engages with an internal gear or spur gear provided on the rotating shaft and / or an internal gear or spur gear provided on the wheel hub, and The rotational force is transmitted to a desired wheel.
本発明の車椅子によれば、左右それぞれの側に装備されるハンドリムを2基ではなく1基にすることにより、操作時のハンドリムの持ち替え動作を不要にしたので、使用者にとっては使い勝手が非常に良いという効果が得られる。
According to the wheelchair of the present invention, since the number of hand rims provided on each of the right and left sides is one instead of two, it is not necessary to change the hand rim at the time of operation, so that the user is very convenient to use. Good effect can be obtained.
本発明の車椅子は、半身の不自由な人以外であっても利用できる。すなわち、本発明の車椅子は、両手が健常な人が片手に物品(スマートフォン、食器、傘など)を持って車椅子で移動するような場合に有用である。また、車椅子でテニスやバスケットボールのようなスポーツをする場合にも有用である。
車 The wheelchair of the present invention can be used by people other than those who are physically disabled. That is, the wheelchair of the present invention is useful when a person who has healthy both hands moves in a wheelchair while holding an article (smartphone, tableware, umbrella, etc.) in one hand. It is also useful when playing sports such as tennis and basketball in a wheelchair.
次に図面を参照して、本発明の好ましい実施形態に係る車椅子について詳細に説明する。図1は、本発明の好ましい実施形態に係る車椅子を示した右側面図、図2は、図1の車椅子の背面図である。
Next, a wheelchair according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a right side view showing a wheelchair according to a preferred embodiment of the present invention, and FIG. 2 is a rear view of the wheelchair of FIG.
図1において全体として参照符号10で示される本発明の好ましい実施形態に係る車椅子は、車椅子の骨格を形成するフレーム12と、右車輪14a及び左車輪14bと、一対のキャスタ16a、16bと、シート18とを備えている。
A wheelchair according to a preferred embodiment of the present invention, which is generally indicated by reference numeral 10 in FIG. 1, includes a frame 12 forming a skeleton of the wheelchair, right wheels 14a and left wheels 14b, a pair of casters 16a, 16b, and a seat. 18 is provided.
なお、車椅子10は、原則としてその中心線に対して左右対称であり左右それぞれの側に同じ構成要素を有しているが、以下の説明において、車椅子10の右側に位置する構成要素の参照符号に「a」を付し、車椅子10の左側に位置する構成要素の参照符号に「b」を付すものとする。また、本明細書において「内方」とは、車椅子に着座する使用者が位置する側を意味し、「外方」とは、使用者が位置する側と反対側を意味する。
Note that the wheelchair 10 is in principle symmetrical with respect to its center line and has the same components on each of the left and right sides. However, in the following description, reference numerals of components located on the right side of the wheelchair 10 , "B" is added to the reference numerals of the components located on the left side of the wheelchair 10. Further, in this specification, “inside” means a side where a user sitting in a wheelchair is located, and “outside” means a side opposite to a side where the user is located.
右車輪14a及び左車輪14bの外方には、車輪スポーク14a2、14b2に指を挟まないように、車輪カバー14a1、14b1がそれぞれ取り付けられているが、車輪カバー14a1、14b1の装備は任意である。
Outside the right wheel 14a and the left wheel 14b, wheel covers 14a1 and 14b1 are respectively attached so as not to pinch a finger between the wheel spokes 14a2 and 14b2, but the equipment of the wheel covers 14a1 and 14b1 is optional. .
車椅子10はまた、右車輪14aの車軸24aと同心に右車輪14aの外方に配置されたハンドリム20aを備えている。ハンドリム20aは、ハンドリムスポーク20a1に連結されている。なお、図1では、4本のハンドリムスポーク20a1が図示されているが、ハンドリムスポーク20a1の本数はこれに限定されるものではない。
The wheelchair 10 also includes a hand rim 20a disposed outside the right wheel 14a concentrically with the axle 24a of the right wheel 14a. The hand rim 20a is connected to the hand rim spoke 20a1. Although four hand rim spokes 20a1 are shown in FIG. 1, the number of hand rim spokes 20a1 is not limited to this.
図3は、車椅子10の駆動機構の構成を示した図、図4(a)は図3の部分4aを示した図であって、駆動機構の要部を示したものである。
FIG. 3 is a diagram showing the configuration of the drive mechanism of the wheelchair 10, and FIG. 4 (a) is a diagram showing a portion 4a of FIG. 3, showing a main part of the drive mechanism.
車椅子10は、右車輪14aを支持する車軸54aを備えている。車軸54aは、中央に開口54a2が設けられた円形のディスク部54a1と、ディスク部54a1の内方に、ディスク部54a1と同心となるように固定された円筒形の内筒部54a3と、ディスク部54a1の外方に、ディスク部54a1と同心となるように固定された円筒形の外筒部54a4とを有し、内筒部54a3が、取付ボス56a、取付スリーブ58aを介して、フレーム12に取り付けられている。参照符号54a5は、車軸54aを固定するのに用いられる公知の車軸固定ばね付きレバー部材である。
The wheelchair 10 includes an axle 54a that supports the right wheel 14a. The axle 54a has a circular disk portion 54a1 having an opening 54a2 at the center, a cylindrical inner cylinder portion 54a3 fixed inside the disk portion 54a1 so as to be concentric with the disk portion 54a1, and a disk portion. Outside the disk 54a1, there is a cylindrical outer cylinder 54a4 fixed concentrically with the disk 54a1, and the inner cylinder 54a3 is attached to the frame 12 via the mounting boss 56a and the mounting sleeve 58a. Installed. Reference numeral 54a5 is a known lever member with an axle fixing spring used for fixing the axle 54a.
車軸54aの内筒部54a3には、回転軸60aが回転可能に配置されている。回転軸60aは、円柱形の軸部60a1と、軸部60a1の外端に設けられ、車軸54aの外筒部54a4内に位置する円板形のディスク部60a2とを有し、ディスク部60a2の外周には、係合部60a3(図5(b)参照)が配置されている。面接触する係合部60a3は、高摩擦係数の材料(例えば、ゴム)又は後述する係合部68a3の係合面と相補する形状の歯面で形成され、又は高摩擦コーティングが施されている。
回 転 A rotating shaft 60a is rotatably disposed on the inner cylinder portion 54a3 of the axle 54a. The rotating shaft 60a has a cylindrical shaft portion 60a1 and a disk-shaped disk portion 60a2 provided at an outer end of the shaft portion 60a1 and located in an outer cylindrical portion 54a4 of the axle 54a. An engagement portion 60a3 (see FIG. 5B) is arranged on the outer periphery. The engaging portion 60a3 which comes into surface contact is formed of a material having a high coefficient of friction (for example, rubber) or a tooth surface having a shape complementary to an engaging surface of the engaging portion 68a3 described later, or is provided with a high friction coating. .
軸部60a1は、軸受60a4によって内筒部54a3内で回転可能に支持されている。また、車椅子10の左側部分にも、対応する箇所に、同様の構成を有する回転軸60bが設けられている。
The shaft portion 60a1 is rotatably supported in the inner cylindrical portion 54a3 by a bearing 60a4. In addition, a rotation shaft 60b having a similar configuration is provided in a corresponding portion on the left side of the wheelchair 10.
なお、軸部60a1と軸部60b1は、軸部30a1、30b1と同様に、一体に形成してもよいし、別体に形成し、連結スリーブ(図示せず)を介して連結することによって1本の回転軸を形成するようにしてもよい。
The shaft portions 60a1 and 60b1 may be integrally formed as in the case of the shaft portions 30a1 and 30b1, or may be formed separately and connected to each other via a connection sleeve (not shown). The rotating shaft of the book may be formed.
車輪ハブ62aが、車軸54aに回転可能に支持されている。車輪ハブ62aは、中央に開口62a2が設けられた円形のディスク部62a1と、ディスク部62a1の開口62a2の周囲に外方に延び、ディスク部62a1と同心となるように固定された円筒形の内筒部62a3と、ディスク部62a1の外周に内方に延び、ディスク部62a1と同心となるように固定された円筒形の外筒部62a4とを有する。内筒部62a3の内端には、係合部62a5(図5(a)参照)が配置されている。外筒部62a4は、軸受62a6によって、車軸54aの外筒部54a4に回転可能に支持されている。また、車輪ハブ62aの外筒部62a4の外周には、右車輪14aの車輪スポーク14a2が連結されている。なお、面接触する係合部62a5は、高摩擦係数の材料(例えば、ゴム)又は後述する係合部70a3の係合面と相補する形状の歯面で形成され、又は高摩擦コーティングが施されている。
The wheel hub 62a is rotatably supported by the axle 54a. The wheel hub 62a has a circular disk portion 62a1 having an opening 62a2 at the center and a cylindrical inner portion extending outward around the opening 62a2 of the disk portion 62a1 and fixed so as to be concentric with the disk portion 62a1. It has a cylindrical portion 62a3 and a cylindrical outer cylindrical portion 62a4 which extends inward on the outer periphery of the disk portion 62a1 and is fixed so as to be concentric with the disk portion 62a1. An engagement portion 62a5 (see FIG. 5A) is disposed at an inner end of the inner cylindrical portion 62a3. The outer cylinder part 62a4 is rotatably supported by the outer cylinder part 54a4 of the axle 54a by a bearing 62a6. A wheel spoke 14a2 of the right wheel 14a is connected to an outer periphery of the outer cylindrical portion 62a4 of the wheel hub 62a. The engaging portion 62a5 in surface contact is formed of a material having a high coefficient of friction (for example, rubber) or a tooth surface having a shape complementary to an engaging surface of an engaging portion 70a3 described later, or is provided with a high friction coating. ing.
車椅子10はまた、伸縮性連結材64a3によって互いに連結された円筒形の内方部64a1および円筒形の外方部64a2を有する外軸64aを備えており、内方部64a1は、軸受64a4によって、車輪ハブ62aの内筒部62a3に回転可能に支持されている。内方部64a1の貫通穴64a5および外方部64a2の貫通穴64a6は、それぞれスプライン穴であり、貫通穴64a5、64a6には、後述するスプライン軸の可動軸部材66aが挿入されている。伸縮性連結材64a3は、形状記憶材料で形成されており、後述する加力装置80aによって力を加えられなければ、中央位置(図4(a)に示されるように、係合部68a3が係合部60a3に面接触し、かつ、係合部70a3が係合部62a5に面接触する位置)を保持するようになっている。なお、形状記憶材料製の伸縮性連結材64a3を用いる代わりに、加力装置80aによって力を加えられない場合に中央位置を保持するような弾性部材(例えば、ばね)を用いてもよい。
The wheelchair 10 also includes an outer shaft 64a having a cylindrical inner portion 64a1 and a cylindrical outer portion 64a2 connected to each other by an elastic connecting member 64a3, and the inner portion 64a1 is formed by a bearing 64a4. The wheel hub 62a is rotatably supported by the inner cylinder portion 62a3. The through hole 64a5 of the inner portion 64a1 and the through hole 64a6 of the outer portion 64a2 are spline holes, respectively, and a movable shaft member 66a of a spline shaft described later is inserted into the through holes 64a5 and 64a6. The elastic connecting member 64a3 is formed of a shape memory material, and unless a force is applied by a later-described force applying device 80a, the engaging portion 68a3 is engaged with the central position (as shown in FIG. 4A). (The position where the engaging portion 70a3 comes into surface contact with the engaging portion 62a5). Instead of using the elastic connecting member 64a3 made of a shape memory material, an elastic member (for example, a spring) that holds the center position when no force is applied by the force applying device 80a may be used.
車椅子10はまた、全体として円柱形の可動軸部材66aを備えている。可動軸部材66aは、図6に最も良く示されるように、内端に配置された端***部66a1と、中間に配置された中間***部66a2とを有し、端***部66a1と中間***部66a2との間の部分66a3および中間***部66a2の外方の部分66a4がスプライン軸になっており、部分66a4が、外軸64aの内方部64a1の貫通穴64a5内および外方部64a2の貫通穴64a6内に摺動可能に配置されている。
The wheelchair 10 also includes a movable shaft member 66a having a columnar shape as a whole. As best shown in FIG. 6, the movable shaft member 66a has an end ridge 66a1 disposed at the inner end and an intermediate ridge 66a2 disposed in the middle, and the end ridge 66a1 and the intermediate ridge are provided. A portion 66a3 between the outer shaft 64a2 and the outer portion 66a4 of the intermediate raised portion 66a2 is a spline shaft. It is slidably disposed in the hole 64a6.
車椅子10はまた、回転軸側ディスク68aと、ハンドリム側ディスク70aとを備えている。回転軸側ディスク68aは、円筒部68a1と、円筒部68a1の内端に位置するディスク部68a2とを有し、ディスク部68a2の内方の面には係合部68a3(図6参照)が配置されている。ハンドリム側ディスク70aは、円筒部70a1と、円筒部70a1の外端に位置するディスク部70a2とを有し、ディスク部70a2の外方の面には係合部70a3(図6参照)が配置されている。円筒部68a1の貫通穴および円筒部70a1の貫通穴はスプライン穴である。回転軸側ディスク68aの円筒部68a1は、部分66a3に摺動可能に配置され、ハンドリム側ディスク70aの円筒部70a1も、部分66a3に摺動可能に配置されている。回転軸側ディスク68aの円筒部68a1およびハンドリム側ディスク70aの円筒部70a1には、回転軸側ディスク68aとハンドリム側ディスク70aを互いに遠去かる方へ付勢するためのばね72aが装着されている。なお、面接触する係合部68a3、70a3は、高摩擦係数の材料(例えば、ゴム)又は係合部60a3、62a5と相補する形状の歯面で形成され、又は高摩擦コーティングが施されている。
The wheelchair 10 also includes a rotating shaft side disk 68a and a hand rim side disk 70a. The rotating shaft side disk 68a has a cylindrical portion 68a1 and a disk portion 68a2 located at the inner end of the cylindrical portion 68a1, and an engaging portion 68a3 (see FIG. 6) is arranged on the inner surface of the disk portion 68a2. Have been. The hand rim-side disk 70a has a cylindrical portion 70a1 and a disk portion 70a2 located at an outer end of the cylindrical portion 70a1, and an engaging portion 70a3 (see FIG. 6) is arranged on an outer surface of the disk portion 70a2. ing. The through hole of the cylindrical portion 68a1 and the through hole of the cylindrical portion 70a1 are spline holes. The cylindrical portion 68a1 of the rotating shaft side disk 68a is slidably disposed on the portion 66a3, and the cylindrical portion 70a1 of the hand rim side disk 70a is also slidably disposed on the portion 66a3. A spring 72a for urging the rotating shaft side disk 68a and the hand rim side disk 70a away from each other is mounted on the cylindrical portion 68a1 of the rotating shaft side disk 68a and the cylindrical portion 70a1 of the hand rim side disk 70a. . The engaging portions 68a3 and 70a3 that come into surface contact are formed of a material (for example, rubber) having a high coefficient of friction or a tooth surface complementary to the engaging portions 60a3 and 62a5, or have a high friction coating. .
図6は、可動軸部材66a、回転軸側ディスク68aおよびハンドリム側ディスク70aの相互関係を示した一連の図である(図6では、各構成要素の相互関係を明瞭に示すため、ばね72aは図示されていない)。図6(a)は、ハンドリム20aが中央位置(すなわち、内方にも外方にも移動させていない位置)にある状態を示しており、ばね72aによって、回転軸側ディスク68aが最内方に位置し、ハンドリム側ディスク70aが最外方に位置しており、これにより回転軸側ディスク68aのディスク部68a2の係合部68a3が回転軸60aの係合部60a3に面接触し、かつ、ハンドリム側ディスク70aのディスク部70a2の係合部70a3が車輪ハブ62aの係合部62a5に面接触している。図6(b)は、ハンドリム20aが内方位置にある状態を示しており、ハンドリム側ディスク70aがばね72aのばね力に抗して可動軸部材66aの中間***部66a2によって押されるので、係合部70a3と係合部62a5との係合が解除される(図5(a)参照)。図6(c)は、ハンドリム20aが外方位置にある状態を示しており、回転軸側ディスク68aがばね72aのばね力に抗して可動軸部材66aの端***部66a1によって押されるので、係合部68a3と係合部60a3との係合が解除される(図5(b)参照)。
FIG. 6 is a series of diagrams showing the interrelationship between the movable shaft member 66a, the rotating shaft side disk 68a, and the hand rim side disk 70a (in FIG. 6, in order to clearly show the interrelationship between the components, the spring 72a is Not shown). FIG. 6A shows a state in which the hand rim 20a is at the center position (that is, the position at which the hand rim 20a is not moved inward or outward), and the rotating shaft side disk 68a is moved to the innermost position by the spring 72a. , The hand rim-side disc 70a is located at the outermost position, whereby the engaging portion 68a3 of the disc portion 68a2 of the rotating shaft-side disc 68a comes into surface contact with the engaging portion 60a3 of the rotating shaft 60a, and The engaging portion 70a3 of the disc portion 70a2 of the hand rim-side disc 70a is in surface contact with the engaging portion 62a5 of the wheel hub 62a. FIG. 6B shows a state in which the hand rim 20a is at the inward position, and the hand rim-side disc 70a is pushed by the intermediate raised portion 66a2 of the movable shaft member 66a against the spring force of the spring 72a. The engagement between the joining portion 70a3 and the engaging portion 62a5 is released (see FIG. 5A). FIG. 6C shows a state in which the hand rim 20a is at the outer position, and the rotating shaft side disk 68a is pushed by the end protrusion 66a1 of the movable shaft member 66a against the spring force of the spring 72a. The engagement between the engaging portion 68a3 and the engaging portion 60a3 is released (see FIG. 5B).
外軸64aの外方部64a2の内端に外側プレート74aが固定されており、外側プレート74aにはハンドリムスポーク20a1が連結されている。また、外軸64aの内方部64a1の外端に内側プレート76aが取り付けられている。
外側 The outer plate 74a is fixed to the inner end of the outer portion 64a2 of the outer shaft 64a, and the hand rim spoke 20a1 is connected to the outer plate 74a. An inner plate 76a is attached to the outer end of the inner portion 64a1 of the outer shaft 64a.
車椅子10はさらに、ハンドリム20aの内方又は外方への移動を可動軸部材66aに伝達するための加力装置80aを備えている。図7は、加力装置80aを模式的に示した斜視図である。加力装置80aは、可動軸部材66aに摺動可能に取り付けられた支持部材82aと、一対のアーム部材84a、86aと、別の一対のアーム部材88a、90aとを有している。なお、支持部材82aは、スプラインにより独自には回転不能で、可動軸部材66aと一緒に回転するようになっている。
The wheelchair 10 further includes a force applying device 80a for transmitting the inward or outward movement of the hand rim 20a to the movable shaft member 66a. FIG. 7 is a perspective view schematically showing the force applying device 80a. The force applying device 80a includes a support member 82a slidably attached to the movable shaft member 66a, a pair of arm members 84a and 86a, and another pair of arm members 88a and 90a. Note that the support member 82a cannot rotate independently by a spline, but rotates together with the movable shaft member 66a.
図8(a)は、一対のアーム部材84a、86aの支持部材82aへの取り付け状態を示した図である。アーム部材84aは、ほぼ中央の個所がピン84a1によって、支持部材82aの0度の位置に水平面内において回転可能に取り付けられている。アーム部材84aの一端84a2にはローラが取り付けられ、他端84a3にもローラが取り付けられている。これらのローラは、ローラ収容部材84a4、84a5内にそれぞれ収容されている。同様に、アーム部材86aは、ほぼ中央の個所がピン86a1によって、支持部材82aの180度の位置に水平面内において回転可能に取り付けられている。アーム部材86aの一端86a2にはローラが取り付けられ、他端86a3にもローラが取り付けられている。これらのローラは、ローラ収容部材86a4、86a5内にそれぞれ収容されている。
FIG. 8A is a view showing a state in which the pair of arm members 84a and 86a are attached to the support member 82a. The arm member 84a is rotatably mounted in a horizontal plane at a position of 0 degrees of the support member 82a at a substantially central position by a pin 84a1. A roller is attached to one end 84a2 of the arm member 84a, and a roller is attached to the other end 84a3. These rollers are housed in roller housing members 84a4 and 84a5, respectively. Similarly, the arm member 86a is rotatably mounted on the support member 82a at a position of 180 degrees in a horizontal plane at a position substantially at the center by a pin 86a1. A roller is attached to one end 86a2 of the arm member 86a, and a roller is attached to the other end 86a3. These rollers are housed in roller housing members 86a4 and 86a5, respectively.
図8(b)は、一対のアーム部材88a、90aの支持部材82aへの取り付け状態を示した図である。アーム部材88aは、ほぼ中央の個所がピン88a1によって、支持部材82aの90度の位置に垂直面内において回転可能に取り付けられている。アーム部材88aの一端88a2にはローラが取り付けられ、他端88a3にもローラが取り付けられている。これらのローラは、ローラ収容部材88a4、88a5内にそれぞれ収容されている。同様に、アーム部材90aは、ほぼ中央の個所がピン90a1によって、支持部材82aの270度の位置に垂直面内において回転可能に取り付けられている。アーム部材90aの一端90a2にはローラが取り付けられ、他端90a3にもローラが取り付けられている。これらのローラは、ローラ収容部材90a4、90a5内にそれぞれ収容されている。
FIG. 8B is a diagram showing a state in which the pair of arm members 88a and 90a are attached to the support member 82a. The arm member 88a is rotatably mounted in a vertical plane at a 90-degree position on the support member 82a at a substantially central position by a pin 88a1. A roller is attached to one end 88a2 of the arm member 88a, and a roller is attached to the other end 88a3. These rollers are housed in roller housing members 88a4 and 88a5, respectively. Similarly, the arm member 90a is rotatably mounted in a vertical plane at a position of 270 degrees on the support member 82a by a pin 90a1 at a substantially central portion. A roller is attached to one end 90a2 of the arm member 90a, and a roller is attached to the other end 90a3. These rollers are housed in roller housing members 90a4 and 90a5, respectively.
なお、アーム部材84a、86a、88a、90aの構成を明瞭に示すため、図8(a)では、アーム部材88a、90aを図示しておらず、図8(b)では、アーム部材84a、86aを図示していない。
In order to clearly show the configuration of the arm members 84a, 86a, 88a, and 90a, the arm members 88a and 90a are not illustrated in FIG. 8A, and the arm members 84a and 86a are illustrated in FIG. Are not shown.
図4(a)に最も良く示されるように、ローラ収容部材84a5、86a4、88a5、90a4の各外面は、外側プレート74aに固定されており、ローラ収容部材84a4、86a5、88a4、90a5の各内面は、内側プレート76aに固定されている。
As best shown in FIG. 4A, the outer surfaces of the roller housing members 84a5, 86a4, 88a5, and 90a4 are fixed to the outer plate 74a, and the inner surfaces of the roller housing members 84a4, 86a5, 88a4, and 90a5. Are fixed to the inner plate 76a.
加力装置80aの以上の構成により、ハンドリム20aを内方に移動させようとすると、ハンドリムスポーク20a1を介して外側プレート74aが内方に押される。すると、一対のアーム部材84a、86aと別の一対のアーム部材88a、90aとによって形成される2つのX形リンク装置が押し縮められ、可動軸部材66aが内方部64a1の貫通穴64a5内を摺動して内方に移動する(図5(a)、図6(b)参照)。これにより、回転軸側ディスク68aが回転軸60aに係合した状態で、ハンドリム側ディスク70aと車輪ハブ62aとの係合が解除される。
に よ り With the above configuration of the force applying device 80a, when the hand rim 20a is to be moved inward, the outer plate 74a is pushed inward via the hand rim spoke 20a1. Then, the two X-type link devices formed by the pair of arm members 84a and 86a and the other pair of arm members 88a and 90a are compressed and the movable shaft member 66a moves through the through hole 64a5 of the inner portion 64a1. It slides and moves inward (see FIGS. 5A and 6B). Thus, the engagement between the hand rim side disc 70a and the wheel hub 62a is released in a state where the rotating shaft side disk 68a is engaged with the rotating shaft 60a.
一方、ハンドリム20aを外方に移動させようとすると、ハンドリムスポーク20a1を介して外側プレート74aが外方に押される。すると、一対のアーム部材84a、86aと別の一対のアーム部材88a、90aとによって形成される2つのX形リンク装置が押し広げられ、可動軸部材66aが内方部64a1の貫通穴64a5内を摺動して外方に移動する(図5(b)、図6(c)参照)。これにより、ハンドリム側ディスク70aが車輪ハブ62aに係合した状態で、回転軸側ディスク68aと回転軸60aとの係合が解除される。
On the other hand, when trying to move the hand rim 20a outward, the outer plate 74a is pushed outward via the hand rim spoke 20a1. Then, the two X-shaped link devices formed by the pair of arm members 84a and 86a and the other pair of arm members 88a and 90a are pushed apart, and the movable shaft member 66a moves through the through hole 64a5 of the inner portion 64a1. It slides and moves outward (see FIGS. 5B and 6C). Thus, the engagement between the rotating shaft side disk 68a and the rotating shaft 60a is released in a state where the hand rim side disk 70a is engaged with the wheel hub 62a.
なお、以上の記載では、主として車椅子10の右側部分の構成について説明してきたが、車椅子10の左側部分も、右側部分と実質的に同一の構成を有している。すなわち、主要な構成要素について記すと、20bはハンドリム、54bは車軸、60bは回転軸、62bは車輪ハブ、64bは外軸、66bは可動軸部材、68bは回転軸側ディスク、70bはハンドリム側ディスク、80bは加力装置をそれぞれ示している。
In the above description, the configuration of the right side portion of the wheelchair 10 has mainly been described, but the left side portion of the wheelchair 10 also has substantially the same configuration as the right side portion. That is, when describing the main components, 20b is a hand rim, 54b is an axle, 60b is a rotating shaft, 62b is a wheel hub, 64b is an outer shaft, 66b is a movable shaft member, 68b is a rotating shaft side disk, and 70b is a hand rim side. The disk and 80b respectively indicate a force applying device.
図9及び図10を参照して、車椅子10の作動について説明する。図9は、車椅子10の右折又は左折走行を示した模式的な平面図、図10は、車椅子10の直進走行を示した模式的な平面図である。
The operation of the wheelchair 10 will be described with reference to FIGS. FIG. 9 is a schematic plan view showing a right turn or left turn traveling of the wheelchair 10, and FIG. 10 is a schematic plan view showing a straight traveling of the wheelchair 10.
右手を用いて右折しようとする場合には、右手でハンドリム20aを把持し内方に移動させた状態で前方に回転させる。すると、右車輪14aが回転しない状態で左車輪14bが回転し、これにより車椅子10は右折する(図9(a)参照)。右手を用いて左折しようとする場合には、右手でハンドリム20aを把持し外方に移動させた状態で前方に回転させる。すると、左車輪14bが回転しない状態で右車輪14aが回転し、これにより車椅子10は左折する(図9(b)参照)。左手を用いて左折しようとする場合には、左手でハンドリム20bを把持し内方に移動させた状態で前方に回転させる。すると、左車輪14bが回転しない状態で右車輪14aが回転し、これにより車椅子10は左折する(図9(c)参照)。左手を用いて右折しようとする場合には、左手でハンドリム20bを把持し外方に移動させた状態で前方に回転させる。すると、右車輪14aが回転しない状態で左車輪14bが回転し、これにより車椅子10は右折する(図9(d)参照)。
When trying to make a right turn using the right hand, hold the hand rim 20a with the right hand and rotate it forward while moving it inward. Then, the left wheel 14b rotates without the right wheel 14a rotating, whereby the wheelchair 10 turns right (see FIG. 9A). When trying to turn left using the right hand, the user turns the hand rim 20a forward while holding the hand rim 20a outward with the right hand. Then, the right wheel 14a rotates while the left wheel 14b does not rotate, whereby the wheelchair 10 turns left (see FIG. 9B). When trying to make a left turn using the left hand, the user turns the hand rim 20b forward while holding the hand rim 20b with the left hand and moving it inward. Then, the right wheel 14a rotates while the left wheel 14b does not rotate, whereby the wheelchair 10 turns left (see FIG. 9C). When trying to turn right using the left hand, the user turns the hand rim 20b forward with the left hand gripping the hand rim 20b. Then, the left wheel 14b rotates while the right wheel 14a does not rotate, whereby the wheelchair 10 turns right (see FIG. 9D).
右手を用いて前進しようとする場合には、右手でハンドリム20aを中央位置に把持した状態で前方に回転させる(図10(a)参照)。左手を用いて前進しようとする場合には、左手でハンドリム20bを中央位置に把持した状態で前方に回転させる(図10(b)参照)。さらに、両手を用いて前進することもできる(図10(c)参照)。この場合は、右手でハンドリム20aを中央位置に把持した状態で前方に回転させるとともに、左手でハンドリム20bを中央位置に把持した状態で前方に回転させる。
When trying to move forward with the right hand, rotate the hand rim 20a forward while holding the hand rim 20a at the center position with the right hand (see FIG. 10A). When trying to move forward using the left hand, the hand rim 20b is rotated forward while holding the hand rim 20b at the center position with the left hand (see FIG. 10B). Further, the user can move forward using both hands (see FIG. 10C). In this case, the user rotates the hand rim 20a forward while holding the hand rim 20a at the center position with the right hand, and rotates the hand rim 20b forward while holding the hand rim 20b at the center position with the left hand.
車椅子10の加力装置80aは、二対のアーム部材84a、86a、88a、90aで形成される2つのX形リンク装置を押し縮め又は押し広げて平行移動させることによって可動軸部材66a、66bを摺動させるように構成されている。
The force applying device 80a of the wheelchair 10 compresses or expands the two X-shaped link devices formed by the two pairs of arm members 84a, 86a, 88a, 90a to translate and move the movable shaft members 66a, 66b. It is configured to slide.
車椅子10は、面接触する係合部60a3と係合部68a3、係合部62a5と係合部70a3とによって回転力が伝達されるように構成されているが、平歯車と内歯車とのかみ合いによって回転力が伝達されるように構成してもよい。
The wheelchair 10 is configured so that the rotational force is transmitted by the engaging portions 60a3 and 68a3 and the engaging portions 62a5 and 70a3 that are in surface contact, but the engagement between the spur gear and the internal gear is performed. May be configured to transmit the rotational force.
本発明は、以上の発明の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で、種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。
The present invention is not limited to the above embodiments of the invention, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the invention. Needless to say, it is.
たとえば、図示した車椅子の構成要素の細部は単なる例示的なものであり、これらの細部を修正してもよい。
For example, the wheelchair component details shown are merely exemplary and may be modified.
10 車椅子
12 フレーム
14a、14b 車輪
14a1、14b1 車輪カバー
14a2、14b2 車輪スポーク
16a、16b キャスタ
18 シート
20a、20b ハンドリム
20a1、20b1 ハンドリムスポーク
20a2、20b2 ハンドリムスポーク受け部材
54a、54b 車軸
56a、56b 取付ボス
58a、58b 取付スリーブ
60a、60b 回転軸
62a、62b 車輪ハブ
64a、64b 外軸
66a、66b 可動軸部材
68a、68b 回転軸側ディスク
70a、70b ハンドリム側ディスク
72a、72b ばね
74a、74b 外側プレート
76a、76b 内側プレート
80a、80b 加力装置
82a、82b 支持部材
84a、86a;84b、86b 一対のアーム部材
88a、90a;88b、90b 別の一対のアーム部材 10Wheelchair 12 Frames 14a, 14b Wheels 14a1, 14b1 Wheel covers 14a2, 14b2 Wheel spokes 16a, 16b Casters 18 Seats 20a, 20b Hand rims 20a1, 20b1 Hand rim spokes 20a2, 20b2 Hand rim spoke receiving members 54a, 54b Axles 56a, 56b Mounting bosses , 58b Mounting sleeves 60a, 60b Rotating shafts 62a, 62b Wheel hubs 64a, 64b Outer shafts 66a, 66b Movable shaft members 68a, 68b Rotating shaft side disks 70a, 70b Hand rim side disks 72a, 72b Springs 74a, 74b Outer plates 76a, 76b Inner plates 80a, 80b Force devices 82a, 82b Support members 84a, 86a; 84b, 86b A pair of arm members 88a, 90a; 88b, 90b Another pair The arm member
12 フレーム
14a、14b 車輪
14a1、14b1 車輪カバー
14a2、14b2 車輪スポーク
16a、16b キャスタ
18 シート
20a、20b ハンドリム
20a1、20b1 ハンドリムスポーク
20a2、20b2 ハンドリムスポーク受け部材
54a、54b 車軸
56a、56b 取付ボス
58a、58b 取付スリーブ
60a、60b 回転軸
62a、62b 車輪ハブ
64a、64b 外軸
66a、66b 可動軸部材
68a、68b 回転軸側ディスク
70a、70b ハンドリム側ディスク
72a、72b ばね
74a、74b 外側プレート
76a、76b 内側プレート
80a、80b 加力装置
82a、82b 支持部材
84a、86a;84b、86b 一対のアーム部材
88a、90a;88b、90b 別の一対のアーム部材 10
Claims (2)
- フレームと、右車輪及び左車輪と、右キャスタ及び左キャスタと、シートとを有する車椅子であって、
前記各車輪の車軸と同心に配置され、ハンドリムスポークにそれぞれ連結された左右一対のハンドリムと、
一方の側の前記ハンドリムを回転させることによって生ずる回転力を駆動機構を介して反対側の車輪に伝達するための回転軸と、
一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して同じ側の車輪に伝達するための左右一対の車輪ハブとを備え、
前記駆動機構が、前記車軸の中心と同心となるように取り付けられた水平方向に摺動可能な可動軸部材と、前記可動軸部材の前記回転軸側に摺動可能に配置された回転軸側ディスクと、前記可動軸部材の前記回転軸側ディスクの位置する側と反対側に摺動可能に配置されたハンドリム側ディスクと、前記ハンドリムの内方又は外方への移動を前記可動軸部材に伝達するための加力装置とを有し、前記加力装置が、前記可動軸部材に摺動可能に取り付けられ、前記可動軸部材と一緒に回転する支持部材と、一対のアーム部材と、別の一対のアーム部材とを有し、
中央の個所が第1ピンによって前記支持部材の0度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち一方のアーム部材と、中央の個所が第2ピンによって前記支持部材の180度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち他方のアーム部材とによって、第1リンク装置が形成され、
中央の個所が第3ピンによって前記支持部材の90度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち一方のアーム部材と、中央の個所が第4ピンによって前記支持部材の270度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち他方のアーム部材とによって、第2リンク装置が形成され、
前記ハンドリムを内方又は外方に移動させると、前記第1および第2リンク装置が押し縮められ又は押し広げられて、前記可動軸部材を内方又は外方に摺動させ、前記回転軸側ディスクに設けられた面接触する係合部及び前記ハンドリム側ディスクに設けられた面接触する係合部が、前記回転軸に設けられた面接触する係合部及び/又は前記車輪ハブに設けられた面接触する係合部に選択的に係合して、前記回転力が所望の側の車輪に伝達されるように構成されていることを特徴とする車椅子。 A wheelchair having a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat,
A pair of left and right hand rims arranged concentrically with the axles of the respective wheels and respectively connected to hand rim spokes,
A rotating shaft for transmitting a rotational force generated by rotating the hand rim on one side to a wheel on the opposite side via a drive mechanism;
A pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim on one side to wheels on the same side via the drive mechanism;
A movable shaft member slidably mounted in the horizontal direction, the driving mechanism being mounted concentrically with the center of the axle; and a rotating shaft side slidably disposed on the rotating shaft side of the movable shaft member. A disk, a hand rim-side disk slidably disposed on a side of the movable shaft member opposite to a side where the rotary shaft-side disk is located, and moving the hand rim inward or outward to the movable shaft member. A force device for transmitting, the force device is slidably attached to the movable shaft member, a support member that rotates together with the movable shaft member, a pair of arm members, And a pair of arm members,
A central portion is rotatably mounted in a horizontal plane at a position of 0 degree on the support member by a first pin. One of the arm members of the pair of arm members and the central portion are supported by a second pin. A first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees of the member,
One arm member of the another pair of arm members is rotatably mounted in a vertical plane at a 90-degree position on the support member by a third pin at a central location, and a fourth pin is located at the central location. A second link device is formed by the other arm member of the another pair of arm members, which is rotatably mounted in a vertical plane at a position of 270 degrees on the support member, and
When the hand rim is moved inward or outward, the first and second link devices are compressed or expanded, and the movable shaft member is slid inward or outward, and the rotation shaft side is moved. A surface contact engaging portion provided on the disk and a surface contact engaging portion provided on the hand rim-side disk are provided on the surface contact engaging portion provided on the rotating shaft and / or the wheel hub. A wheelchair, wherein the wheelchair is configured to selectively engage with an engaging portion that comes into contact with the surface, so that the rotational force is transmitted to a wheel on a desired side. - フレームと、右車輪及び左車輪と、右キャスタ及び左キャスタと、シートとを有する車椅子であって、
前記各車輪の車軸と同心に配置され、ハンドリムスポークにそれぞれ連結された左右一対のハンドリムと、
一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して反対側の車輪に伝達するための回転軸と、
一方の側の前記ハンドリムを回転させることによって生ずる回転力を前記駆動機構を介して同じ側の車輪に伝達するための左右一対の車輪ハブとを備え、
前記駆動機構が、前記車軸の中心と同心となるように取り付けられた水平方向に摺動可能な可動軸部材と、前記可動軸部材の前記回転軸側に摺動可能に配置された回転軸側ディスクと、前記可動軸部材の前記回転軸側ディスクの位置する側と反対側に摺動可能に配置されたハンドリム側ディスクと、前記ハンドリムの内方又は外方への移動を前記可動軸部材に伝達するための加力装置とを有し、前記加力装置が、前記可動軸部材に摺動可能に取り付けられ、前記可動軸部材と一緒に回転する支持部材と、一対のアーム部材と、別の一対のアーム部材とを有し、
中央の個所が第1ピンによって前記支持部材の0度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち一方のアーム部材と、中央の個所が第2ピンによって前記支持部材の180度の位置に水平面内において回転可能に取り付けられた、前記一対のアーム部材のうち他方のアーム部材とによって、第1リンク装置が形成され、
中央の個所が第3ピンによって前記支持部材の90度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち一方のアーム部材と、中央の個所が第4ピンによって前記支持部材の270度の位置に垂直面内において回転可能に取り付けられた、前記別の一対のアーム部材のうち他方のアーム部材とによって、第2リンク装置が形成され、
前記ハンドリムを内方又は外方に移動させると、前記第1および第2リンク装置が押し縮められ又は押し広げられて、前記可動軸部材を内方又は外方に摺動させ、前記回転軸側ディスクに設けられた平歯車又は内歯車及び前記ハンドリム側ディスクに設けられた平歯車又は内歯車が、前記回転軸に設けられた内歯車又は平歯車及び/又は前記車輪ハブに設けられた内歯車又は平歯車に選択的に係合して、前記回転力が所望の側の車輪に伝達されるように構成されていることを特徴とする車椅子。 A wheelchair having a frame, a right wheel and a left wheel, a right caster and a left caster, and a seat,
A pair of left and right hand rims arranged concentrically with the axles of the respective wheels and respectively connected to hand rim spokes,
A rotating shaft for transmitting a rotational force generated by rotating the hand rim on one side to the opposite wheel via the drive mechanism;
A pair of left and right wheel hubs for transmitting a rotational force generated by rotating the hand rim on one side to wheels on the same side via the drive mechanism;
A movable shaft member slidably mounted in the horizontal direction, the driving mechanism being mounted concentrically with the center of the axle; and a rotating shaft side slidably disposed on the rotating shaft side of the movable shaft member. A disk, a hand rim-side disk slidably disposed on a side of the movable shaft member opposite to a side where the rotary shaft-side disk is located, and moving the hand rim inward or outward to the movable shaft member. A force device for transmitting, the force device is slidably attached to the movable shaft member, a support member that rotates together with the movable shaft member, a pair of arm members, And a pair of arm members,
A central portion is rotatably mounted in a horizontal plane at a position of 0 degree on the support member by a first pin. One of the arm members of the pair of arm members and the central portion are supported by a second pin. A first link device is formed by the other arm member of the pair of arm members, which is rotatably mounted in a horizontal plane at a position of 180 degrees of the member,
One arm member of the another pair of arm members is rotatably mounted in a vertical plane at a 90-degree position on the support member by a third pin at a central location, and a fourth pin is located at the central location. A second link device is formed by the other arm member of the another pair of arm members, which is rotatably mounted in a vertical plane at a position of 270 degrees on the support member, and
When the hand rim is moved inward or outward, the first and second link devices are compressed or expanded, and the movable shaft member is slid inward or outward, and the rotation shaft side is moved. A spur gear or an internal gear provided on a disk and a spur gear or an internal gear provided on the hand rim-side disk may be an internal gear or a spur gear provided on the rotating shaft and / or an internal gear provided on the wheel hub. Alternatively, the wheelchair is configured to selectively engage with a spur gear so that the rotational force is transmitted to a wheel on a desired side.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018134754A JP6455953B1 (en) | 2018-07-18 | 2018-07-18 | One-handed wheelchair |
JP2018-134754 | 2018-07-18 | ||
JP2018217988A JP6494853B1 (en) | 2018-11-21 | 2018-11-21 | One-handed wheelchair |
JP2018-217988 | 2018-11-21 |
Publications (1)
Publication Number | Publication Date |
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WO2020017104A1 true WO2020017104A1 (en) | 2020-01-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2019/013123 WO2020017104A1 (en) | 2018-07-18 | 2019-03-27 | Single-handedly operable wheelchair |
Country Status (1)
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WO (1) | WO2020017104A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US11141329B2 (en) * | 2019-11-29 | 2021-10-12 | Research Institute For Life Space, Llc | Single-handedly operable wheelchair |
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JP2004141452A (en) * | 2002-10-25 | 2004-05-20 | Tada Mokko Seisakusho:Kk | Single-hand operation type wheelchair |
US20090039612A1 (en) * | 2005-03-11 | 2009-02-12 | Alan Bidwell | Manually Propelled Wheelchair Device |
JP2010279666A (en) * | 2009-06-08 | 2010-12-16 | Kazuyo Hiramine | One-handed operation wheelchair |
JP6288746B1 (en) * | 2017-09-26 | 2018-03-07 | 合同会社ライフスペース研究所 | One-handed wheelchair |
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2019
- 2019-03-27 WO PCT/JP2019/013123 patent/WO2020017104A1/en active Application Filing
Patent Citations (4)
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JP2004141452A (en) * | 2002-10-25 | 2004-05-20 | Tada Mokko Seisakusho:Kk | Single-hand operation type wheelchair |
US20090039612A1 (en) * | 2005-03-11 | 2009-02-12 | Alan Bidwell | Manually Propelled Wheelchair Device |
JP2010279666A (en) * | 2009-06-08 | 2010-12-16 | Kazuyo Hiramine | One-handed operation wheelchair |
JP6288746B1 (en) * | 2017-09-26 | 2018-03-07 | 合同会社ライフスペース研究所 | One-handed wheelchair |
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Publication number | Priority date | Publication date | Assignee | Title |
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US11141329B2 (en) * | 2019-11-29 | 2021-10-12 | Research Institute For Life Space, Llc | Single-handedly operable wheelchair |
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