WO2018097302A1 - Dispositif d'aide à la puissance musculaire - Google Patents

Dispositif d'aide à la puissance musculaire Download PDF

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Publication number
WO2018097302A1
WO2018097302A1 PCT/JP2017/042470 JP2017042470W WO2018097302A1 WO 2018097302 A1 WO2018097302 A1 WO 2018097302A1 JP 2017042470 W JP2017042470 W JP 2017042470W WO 2018097302 A1 WO2018097302 A1 WO 2018097302A1
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WO
WIPO (PCT)
Prior art keywords
brake
rotating body
contact member
axis
tool
Prior art date
Application number
PCT/JP2017/042470
Other languages
English (en)
Japanese (ja)
Inventor
充良 浜崎
和也 横山
佐々木　大輔
Original Assignee
国立大学法人 香川大学
ナブテスコ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 国立大学法人 香川大学, ナブテスコ株式会社 filed Critical 国立大学法人 香川大学
Priority to CN201780070249.1A priority Critical patent/CN109937122A/zh
Priority to JP2018553010A priority patent/JP6759357B2/ja
Publication of WO2018097302A1 publication Critical patent/WO2018097302A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/02—Orthopaedic corsets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J11/00—Manipulators not otherwise provided for

Definitions

  • the present invention relates to a muscle strength assisting device that is worn by a wearer and assists the muscle strength of the wearer.
  • a muscle force assisting device has attracted attention for the purpose of reducing the muscular burden on workers engaged in agriculture, construction industry, nursing care, etc. Yes.
  • the muscular strength assisting device has a pair of attachments that are respectively attached to two parts of a human body with a joint positioned therebetween, and can hold the pair of attachments in a predetermined relative position.
  • the muscle force assisting device of Patent Document 1 uses a ratchet mechanism to assist in maintaining the upper arm in a lifted state.
  • the muscle force assisting device disclosed in Patent Document 1 can only hold the relative position of the pair of wearing tools only at the position where the engaging claw portion of the ratchet mechanism is engaged with the engaged portion. Even if a plurality of engaged parts are provided, the position where the upper arm can be held is any one of discrete positions. That is, it is difficult for the conventional muscle force assisting device to receive the muscle force assisting force with a desired posture.
  • the present invention has been made in consideration of the above points, and an object of the present invention is to provide a muscle force assisting device that can receive muscle force assisting force appropriately in a desired posture.
  • a first muscle strength assisting device includes: A first wearing tool attached to one of the two parts of the human body with the joint positioned therebetween; A second wearing tool that is rotatable relative to the first wearing tool about an assist axis, and is attached to the other of the two parts; A brake mechanism for restricting relative rotation in at least one direction around the assist axis of the second wearing tool with respect to the first wearing tool,
  • the brake mechanism is A brake rotating body that rotates relative to the first mounting tool in conjunction with the second mounting tool;
  • a contact member that moves in a direction non-parallel to a direction perpendicular to the assist axis and contacts and separates from the brake rotating body, The contact member comes into contact with the brake rotating body and restricts free rotation of the second wearing tool with respect to the first wearing tool around the assist axis.
  • the second muscle force assisting device comprises: A first wearing tool attached to one of the two parts of the human body with the joint positioned therebetween; A second mounting device attached to the other; A brake mechanism for restricting relative rotation in at least one direction around the assist axis of the second wearing tool with respect to the first wearing tool,
  • the brake mechanism is A brake rotating body that rotates relative to the first mounting tool in conjunction with the second mounting tool; And a contact member that moves in a direction that is not parallel to the direction perpendicular to the assist axis and contacts the brake rotator and separates from the brake rotator.
  • the brake mechanism is a one-way provided between a rotating member that is rotatably supported around the assist axis with respect to the first wearing tool and connected to the second wearing tool, and the brake rotating body. You may make it have a clutch further.
  • the one-way clutch restricts relative rotation of the rotating member in the one direction around the assist axis with respect to the brake rotating body, and the assist axis of the rotating member with respect to the brake rotating body.
  • the rotating member may be held so as to allow relative rotation in the other direction opposite to the one direction around the center.
  • the contact member may be driven by atmospheric pressure or hydraulic pressure.
  • the brake rotating body may be moved by being pressed by the contact member and contact a pressure receiving surface supported by the first wearing tool.
  • the pressure receiving surface may be formed by a casing that houses the brake rotating body.
  • the brake rotating body may be positioned between the contact member and the pressure receiving surface in a direction parallel to the assist axis.
  • the brake rotating body In a state where free rotation of the second mounting tool around the assist axis with respect to the first mounting tool is restricted, the brake rotating body is moved together with the first contact member together with the contact member by an external force that resists the restriction. Supported by the first mounting tool to operate with respect to the mounting tool;
  • the brake mechanism may further include an auxiliary contact member that contacts the brake rotating body that operates together with the contact member with respect to the first wearing tool.
  • the brake rotating body and the contact member are moved relative to the first wearing tool in a direction non-parallel to the assist axis by the external force,
  • the auxiliary contact member may contact the brake rotating body from a radial direction centered on the assist axis.
  • the brake mechanism further includes an auxiliary brake rotating body that rotates in synchronization with the brake rotating body about the assist axis, In the state where free rotation of the second mounting tool around the assist axis with respect to the first mounting tool is restricted, the brake rotator is configured so that the contact member and the auxiliary brake are applied by an external force against the restriction. Supported by the first mounting tool so as to operate with the rotating body with respect to the first mounting tool; The brake mechanism may further include an auxiliary contact member that comes into contact with the auxiliary brake rotating body that operates together with the brake rotating body with respect to the first wearing tool.
  • the brake rotator, the contact member, and the auxiliary brake rotator are moved relative to the first wearing tool in a direction non-parallel to the assist axis by the external force,
  • the auxiliary contact member may contact the auxiliary brake rotating body from a radial direction centered on the assist axis.
  • the contact member is in contact with the brake rotating body, and relative rotation of the second wearing tool with respect to the first wearing tool around the assist axis is restricted in one direction,
  • the brake rotating body acts on the first mounting tool together with the contact member by an external force that rotates the second mounting tool relative to the first mounting tool in one direction around the assist axis.
  • the first wearing tool may be supported so as to operate.
  • the brake mechanism further includes a casing that supports the brake rotating body and the contact member; The casing may be operably supported by the first wearing tool.
  • the brake mechanism further includes a biasing unit that biases the casing, The external force may move the casing relative to the first mounting tool together with the brake rotating body and the contact member against the urging force of the urging means.
  • the casing may be rotatable relative to the first wearing tool about an axis that is deviated from the assist axis.
  • a third muscle strength assisting device comprises: A first wearing tool attached to one of the two parts of the human body with the joint positioned therebetween; A second mounting device attached to the other; A rotating member that is supported so as to be capable of rotation control around the assist axis with respect to the first wearing tool and connected to the second wearing tool,
  • the second mounting tool includes a mounting portion that is attached to the other of the human body, and a connecting arm portion that extends from the rotating member and connects the rotating member and the mounting portion.
  • the connecting arm portion and the mounting portion are connected so as to be relatively rotatable.
  • a connection position where the connection arm portion and the mounting portion can be rotated relative to each other is a region in contact with the human body of the mounting portion. It may be located inside.
  • a relative rotation axis of the connecting arm portion and the mounting portion may be non-parallel to a direction connecting both ends of the connecting arm portion.
  • an angle formed by a relative rotation axis of the connecting arm portion and the mounting portion with respect to a direction connecting both ends of the connecting arm portion is greater than 45 ° and less than 135 °. There may be.
  • an angle formed by a relative rotation axis of the connecting arm portion and the mounting portion with respect to the assist axis may be less than 45 °.
  • a fourth muscle strength assisting device is as follows.
  • a first wearing tool attached to one of the two parts of the human body with the joint positioned therebetween;
  • a second mounting device attached to the other;
  • a rotating member that is supported so as to be rotatable about the assist axis with respect to the first wearing tool and connected to the second wearing tool,
  • the second mounting tool includes a mounting portion that is attached to the other of the human body, and a connecting arm portion that extends from the rotating member and connects the rotating member and the mounting portion. In the projection in a direction parallel to the assist axis, the mounting portion can be adjusted in orientation with respect to the connecting arm portion.
  • a shoulder joint is located between a part of the human body to which the first wearing tool is attached and a part of the human body to which the second wearing tool is attached.
  • the wearing tool may be attached to the upper arm.
  • the assist axis and the connecting arm portion to the mounting portion on a plane orthogonal to the assist axis and including a connection position of the mounting portion and the connecting arm portion.
  • the distance from the connection position may be changed.
  • the rotating member, the connecting arm portion, and the mounting portion may constitute a mechanism with four degrees of freedom.
  • the connecting arm portion includes a first member operable with respect to the rotating member, a second member operably connected to the first member, And a third member operatively connected to the second member and operably connected to the mounting portion.
  • the rotating member and the first member of the connecting arm portion, the first member of the connecting arm portion and the second member of the connecting arm portion, and Any one combination of the second member of the connecting arm portion and the third member of the connecting arm portion may be relatively rotatable around an axis that is not parallel to the assist axis.
  • the human body part to which the first wearing tool is attached and the human body part to which the second wearing tool is attached are disposed. Allows flexion or advancement of the joints located, You may make it possible to perform the adduction motion or the abduction motion of the joint by the relative rotation of any one of the combinations around an axis that is not parallel to the assist axis.
  • the wearer of the muscle strength assisting device can appropriately receive the strength assisting force with a desired posture.
  • FIG. 1 is a perspective view for explaining an embodiment of the present invention and showing a muscle strength assisting device together with a wearer.
  • FIG. 2 is a diagram showing a part of the muscle strength assisting device of FIG. 1 from the front.
  • FIG. 3 is a perspective view showing the assist mechanism and the second wearing tool of the muscle strength assisting apparatus of FIG. 1 from the front inner side.
  • FIG. 4 is a perspective view showing the assist mechanism and the second mounting tool of FIG. 3 from the rear outer side.
  • FIG. 5 is a cross-sectional perspective view showing a brake mechanism included in the assist mechanism of FIG.
  • FIG. 6 is a side view showing the brake mechanism of FIG.
  • FIG. 7 is a schematic diagram showing the elements of the brake mechanism in a side cross section for explaining the operation of the brake mechanism of FIG.
  • FIG. 8 is a view showing the second wearing tool of FIG. 3 from the outside of the side.
  • FIG. 9 is a view showing the second wearing tool from the outside in a state where the arm is bent from the state shown in FIG. 8.
  • FIG. 10 is a diagram showing the second wearing tool from the front in the state shown in FIG. 8.
  • FIG. 11 is a view showing the second wearing tool from above in the state shown in FIG. 9.
  • FIG. 12 is a diagram showing the second wearing tool from the front in a state where the arm is abducted from the state shown in FIG. 8.
  • FIG. 13 is a diagram corresponding to FIG. 7 and is a schematic diagram showing still another modification of the brake mechanism.
  • FIG. 14 is a diagram corresponding to FIG. 7 and is a schematic diagram showing still another modification of the brake mechanism.
  • FIG. 14 is a diagram corresponding to FIG. 7 and is a schematic diagram showing still another modification of the brake mechanism.
  • FIG. 15 is a diagram corresponding to FIG. 7 and is a schematic diagram showing still another modification of the brake mechanism.
  • FIG. 16 is a diagram corresponding to FIG. 7 and a schematic diagram showing still another modification of the brake mechanism.
  • FIG. 17 is a perspective view showing a main part of the brake mechanism for explaining a modification of the brake mechanism.
  • 18 is a view corresponding to FIG. 17 and showing a main part of the brake mechanism of FIG. 17 in a state different from FIG.
  • FIG. 19 is a view corresponding to FIG. 17 and showing a main part of the brake mechanism of FIG. 17 in a state different from FIG.
  • FIG. 20 is a view for explaining another modified example of the brake mechanism, and is a side view showing a main part of the brake mechanism.
  • FIG. 21 is a view corresponding to FIG. 20 and showing a main part of the brake mechanism of FIG. 20 in a state different from FIG.
  • FIG. 22 is a perspective view showing an assist mechanism for explaining a modification of the assist mechanism.
  • 23 is a perspective view showing the assist mechanism in FIG. 22 from a direction different from that in FIG.
  • FIG. 24 is a partial cross-sectional perspective view showing the assist mechanism of FIGS. 22 and 23.
  • 25 is a partial cross-sectional perspective view corresponding to FIG. 24 and showing the assist mechanism in a state different from FIG.
  • FIG. 26 is a plan view showing a main part of a brake mechanism included in the assist mechanism of FIG. 27 is a view corresponding to FIG.
  • FIG. 26 is a plan view showing a main part of a brake mechanism included in the assist mechanism of FIG.
  • FIG. 28 is a side view showing the assist mechanism of FIG. 29 corresponds to FIG. 28 and is a side view showing the assist mechanism of FIG.
  • FIG. 30 is a view corresponding to FIGS. 28 and 29, and is a side view showing the assist mechanism in a state different from FIGS.
  • FIG. 1 to 24 are diagrams for explaining an embodiment of the present invention and a modification thereof.
  • FIG. 1 is a perspective view showing the entirety of the muscle strength assisting apparatus 10, and particularly FIG. 1 shows the muscle strength assisting apparatus in a state worn on a human body.
  • the muscle force assisting apparatus 10 includes a first mounting tool 20 and a second mounting tool 30 that are connected so as to be capable of relative movement, and an assist mechanism (position control device) that controls a relative position of the first mounting tool 20 and the second mounting tool 30. 15.
  • the first wearing tool 20 and the second wearing tool 30 are respectively attached to two parts of the human body connected by joints.
  • the first wearing tool 20 and the second wearing tool 30 are capable of relative rotation about the first rotation axis d1 serving as an assist axis.
  • the assist mechanism 15 controls the rotational position of the second wearing tool 30 with respect to the first wearing tool 20 around the assist axis (first rotation axis d1) to assist the muscle strength of the two parts via the joint.
  • the assist axis refers to the rotation axis of the first wearing tool 20 and the second wearing tool 30 whose relative rotation is controlled by the assist force output from the muscle force assisting device 10 for assisting muscle strength.
  • Supply and stop of the strength assisting force from the assist mechanism 15 are controlled by a sensor attached to the strength assisting device 10 or an operation from the wearer of the strength assisting device 10.
  • the muscular strength assisting force supplied from the assist mechanism 15 may be a force that holds the relative positions of the two parts of the human body, or may be a force that actively moves the two parts of the human body relative to each other. Good. That is, the muscular strength assisting force supplied from the assist mechanism 15 may be a force that maintains the relative rotational positions of the first wearing tool 20 and the second wearing tool 30 around the assist axis, or centered on the assist axis. The relative rotation force of the first wearing tool 20 and the second wearing tool 30 may be used.
  • the muscle strength assisting device 10 described here is devised to reduce the sense of restraint given to the wearer.
  • the muscle force assisting device 10 described here is devised to make it possible to appropriately receive the muscle force assisting force with a desired posture.
  • the first wearing tool 20 is attached to the wearer's torso via the wearing plate 21 and the wearing belt 22.
  • the second mounting tool 30 is attached to the upper arm via the mounting portion 37.
  • the muscle force assisting device 10 assists the movement of the shoulder.
  • one joint enables multiple types of relative rotational movements about different axes.
  • the shoulder joint is bent and extended by rotating the upper arm relative to the trunk about the bending axis da, and the internal rotation of the upper arm relative to the trunk about the inner and outer rotation axis db. It is possible to perform a turning motion and an abduction and abduction motion in which the upper arm is rotated relative to the trunk about the abduction axis dc.
  • the assist mechanism 15 includes a brake mechanism 40 and a drive mechanism 70.
  • the brake mechanism 40 includes a rotating member (output shaft) 41 as an output unit of muscle assisting force (assist force).
  • the rotating member 41 is connected to the second mounting tool 30.
  • the first rotation axis d1 that is the rotation axis of the rotation member 41 is provided corresponding to the shoulder bending axis da.
  • the brake mechanism 40 When the brake mechanism 40 is driven by the drive mechanism 70, the brake mechanism 40 switches between a state in which free rotation of the rotating member 41 is restricted and a state in which free rotation of the rotating member 41 is allowed.
  • the relative position of the second mounting tool 30 with respect to the first mounting tool 20 around the first rotation axis (assist axis) d1 is controlled. Then, the upper arm is held at a predetermined position so as not to be lowered.
  • the muscle force assisting device according to the present invention is not limited to the illustrated example, and assists at least one of bending motion, extension motion, adduction motion, abduction motion, internal rotation motion, and external rotation motion. Also good. Further, the muscle force assisting device according to the present invention is not limited to the illustrated example, and may assist the movement of the human body in the elbow, neck, waist, crotch, wrist and the like.
  • the illustrated muscle force assisting device 10 is configured to act on both shoulders, but the present invention is not limited to this example, and the muscle force assisting device 10 includes one shoulder, one wrist, one knee, and one shoulder. You may make it act on an elbow etc.
  • FIGS. 1 to 24 referred to below components shown in one drawing may be omitted in other drawings for easy understanding.
  • the first wearing tool 20 has a mounting plate 21 and a mounting belt 22 to be mounted on the body.
  • the mounting plate 21 is made of a plate material made of resin or metal.
  • a mounting member configured as a sewn product may be used, or a mounting member configured as a combination of a sewn product and a plate-like material (plate) may be used.
  • the mounting belt 22 includes a body side belt and a pair of shoulder belts. The mounting belt 22 fixes the mounting plate 21 at a position facing the wearer's trunk, particularly the back.
  • the first mounting tool 20 further includes a center frame 23, a side frame 24, and a support arm 25.
  • the central frame 23, the side frame 24, and the support arm 25 are made of a frame material made of a relatively light metal and a relatively high rigidity metal such as an aluminum alloy.
  • the central frame 23 is fixed to the mounting plate 21.
  • the side frame 24 extends laterally outward from the central frame 23.
  • the side frame 24 includes a rear frame portion 24a connected to the central frame 23, and a front extension frame portion 24b extending forward from the laterally outer end of the rear frame portion 24a. And have.
  • the rear frame portion 24a is disposed at a position facing the shoulder from the rear.
  • the front extending frame portion 24b is disposed at a position facing the shoulder from the outside in the lateral direction.
  • the side frame 24 is connected to the center frame 23 so as to be relatively rotatable about the second rotation axis d2.
  • the second rotation axis d2 is provided corresponding to the inner / outer rotation axis db of the shoulder.
  • the support arm 25 is provided at the front end of the front extension frame portion 24b.
  • the support arm 25 functions as a bracket that supports a casing 50 of the brake mechanism 40 described later.
  • the illustrated muscle strength assisting device 10 that assists the movement of the shoulder is configured to act on both shoulders.
  • side frames 24 are provided on both sides of the central frame 23, respectively.
  • a brake mechanism 40 of the assist mechanism 15 is supported on each side frame 24.
  • a second wearing tool 30 is provided for each side frame 24.
  • a pair of components provided on both sides with the center frame 23 as the center has symmetry and can be similarly configured. Therefore, in the following description and the drawings referred to in the following description, a configuration acting on one shoulder, specifically, a configuration acting on the right shoulder is described.
  • the second mounting tool 30 is connected to a rotating member 41 (see FIGS. 5 and 10) that forms an output shaft of the assist mechanism 15 described later in detail.
  • the second mounting tool 30 rotates around the first rotation axis d ⁇ b> 1 that is the rotation axis of the rotation member 41.
  • the second mounting tool 30 includes a mounting portion 37 that is attached to a human body, and a connecting arm portion 31 that connects the rotating member 41 and the mounting portion 37.
  • the mounting portion 37 extends from the rotating member 41 in a direction not parallel to the first rotation axis d1 that is the assist axis.
  • the connecting arm portion 31 receives muscular strength assisting force from the rotating member 41 on the most downstream side (most output side) of the assist mechanism 15.
  • the connecting arm portion 31 connects the rotating member 41 and the mounting portion 37 such that the mounting portion 37 rotates with respect to the first mounting device 20 as the rotating member 41 rotates with respect to the first mounting device 20.
  • the mounting portion 37 will be described.
  • the mounting portion 37 is attached to the upper arm of the human body as shown in FIGS.
  • the mounting portion 37 is preferably restricted from relative movement with the upper arm in the movement direction associated with the rotation around the first rotation axis d1.
  • the illustrated mounting portion 37 includes a mounting body 38 and an auxiliary belt 39 that form a cylindrical portion into which the upper arm is inserted.
  • the mounting body 38 is made of, for example, a highly rigid resin molded product.
  • the mounting body 38 has a boss 38a on its outer surface.
  • the mounting body 38 is connected to the connecting arm portion 31 via the boss 38a.
  • the mounting body 38 is disposed at a position facing the rear from the upper arm in the lowered position, and faces the lower arm from the lower side as shown in FIG. It is arranged at the position to do.
  • the auxiliary belt 39 is made of a belt material having flexibility, and is disposed at a position facing the upper arm mainly from the front. By adjusting the length of the auxiliary belt 39, the mounting portion 37 can stably hold the upper arm.
  • the connecting arm portion 31 is mounted so that the mounting portion 37 and the rotation member 41 do not rotate relative to each other about the first rotation axis d1 in order to efficiently transmit the force supplied from the assist mechanism 15 to the mounting portion 37. It is preferable to connect the part 37 and the rotation member 41. That is, since the second mounting tool 30 receives a rotational force about the first rotational axis d1 from the assist mechanism 15, the rotational force is input from the assist mechanism 15 except for play and elastic deformation of the component itself.
  • the connecting arm portion 31 and the mounting portion 37 that outputs an auxiliary force to the human body do not relatively move in the direction of the force input from the assist mechanism 15, that is, in the circumferential direction around the first rotation axis d1. It is preferable that
  • the illustrated connecting arm portion 31 includes a base member 32 and a first member 33 in order from the rotating member 41 side to the mounting portion 37 side.
  • the second member 34 and the third member 35 are provided.
  • the base member 32 is fixed to the rotating member 41 and extends from the rotating member 41 in a direction non-parallel to the first rotation axis d1.
  • the base member 32 rotates around the first rotation axis d ⁇ b> 1 in synchronization with the rotation member 41.
  • the first member 33 is connected to the base member 32 so as to be rotatable relative to the base member 32 about the third rotation axis d3.
  • the second member 34 is connected to the first member 33 so as to be rotatable relative to the first member 33 around the fourth rotation axis d4.
  • the third member 35 is connected to the second member 34 so as to be rotatable relative to the second member 34 about the fifth rotation axis d5.
  • the third member 35 is connected to the boss 38a of the mounting body 38 so as to be rotatable relative to the mounting body 38 of the mounting portion 37 around the sixth rotation axis d6.
  • connection arm part 31 extends from the rotation member 41 includes that the connection arm part 31 is formed integrally with the rotation member 41. That is, part or all of the connecting arm portion 31 may be formed integrally with the rotating member 41.
  • the base member 32 may be formed integrally with the rotating member 41.
  • the connecting arm portion 31 is adjustable.
  • the connecting arm portion 31 and the mounting portion 37 are connected so as to be relatively rotatable about a sixth rotation axis d6.
  • the first rotation axis d1 does not coincide with the bending / extension axis da
  • the bending / extension axis da and the portion of the upper arm to which the mounting portion 37 is attached are accompanied by the bending / extending movement of the upper arm.
  • the connecting direction (longitudinal direction of the upper arm) dx and the connecting direction of both ends of the connecting arm portion 31 (strictly speaking, the connection position ce1 of the connecting arm portion 31 to the rotating member 41 and the mounting portion 37 of the connecting arm portion 31)
  • the angle ⁇ x made by the direction d ⁇ connecting direction ce2 changes. Therefore, along with this bending and stretching exercise, the mounting portion 37 acts to change the direction with respect to the upper arm. At this time, the wearer feels restraint and also pains in the upper arm.
  • the mounting portion 37 described here automatically rotates about the sixth rotation axis d6 with respect to the connecting arm portion 31 to automatically change the orientation of the mounting portion 37 with respect to the connecting arm portion 31 according to the longitudinal direction of the upper arm. Can be adjusted.
  • the relative rotation axis (sixth rotation axis d ⁇ b> 6) between the connecting arm portion 31 and the mounting portion 37 is a direction connecting both ends of the connecting arm portion 31 ( More precisely, it is not parallel to the direction d ⁇ in the direction connecting the connecting position ce1 of the connecting arm portion 31 to the rotating member 41 and the connecting position ce2 of the connecting arm portion 31 to the mounting portion 37. From the viewpoint of efficiently realizing orientation adjustment with respect to the upper arm of the mounting portion 37 by rotation about the sixth rotation axis d6 with respect to the connecting arm portion 31 of the mounting portion 37, as shown in FIG.
  • the angle ⁇ formed with respect to d ⁇ ) is preferably set to be greater than 45 ° and less than 135 °, and more preferably greater than 60 ° and less than 120 °. Most preferably, this angle ⁇ is set to be 90 °.
  • the angle ⁇ formed by the relative rotation axis (third rotation axis d3) with respect to the first rotation axis d1 forming the assist axis is preferably set to be less than 45 ° as shown in FIG.
  • the angle ⁇ is set to be less than 30 °, and most preferably, the angle ⁇ is set to be 0 °.
  • the orientation adjustment function of the mounting portion 37 does not hinder the efficient transmission of the muscle force assisting force from the rotating member 41 to the mounting portion 37. That is, with the rotation of the mounting portion 37 relative to the connecting arm portion 31 about the sixth rotation axis d6, the mounting portion 37 is relative to the rotating member 41 along the circumference centered on the first rotation axis d1. It is preferable not to move. From this point, as shown in FIG. 8 and FIG. 9, in the projection in the direction parallel to the first rotation axis d1 that is the assist axis, the connection position ce2 between the connecting arm portion 31 and the mounting portion 37 is relatively rotatable. The mounting portion 37 is located in a region that is far away from the first rotation axis d1 and in contact with the human body.
  • connection arm portion 31 is orthogonal to the first rotation axis d1 that is the rotation axis of the rotation member 41 and is connected to the attachment portion 37 and the connection arm portion 31 (hereinafter referred to as the connection position).
  • the connection position also referred to as “tip-side connection position” within the plane including ce2
  • the connection position (hereinafter also referred to as “base-end-side connection position”) ce1 and tip-side connection position ce2 of the rotating member 41 and the connecting arm portion 31.
  • base-end-side connection position ce1 and tip-side connection position ce2 of the rotating member 41 and the connecting arm portion 31.
  • the plane orthogonal to the first rotation axis d1 and including the distal end side connection position ce2 is a plane parallel to the plane shown in FIGS.
  • the distance la from the base end side connection position ce1 to the tip end side connection position ce2 in a plane parallel to the plane shown in FIGS. 8 and 9 is the first rotation axis d1 and the tip end side connection position ce2. This also corresponds to a separation interval between the first rotation axis d1 and the distal end side connection position ce2 along the direction orthogonal to the first rotation axis d1 in the plane including the first rotation axis d1.
  • the portion from the rotating member 41 to the mounting portion 37 via the connecting arm portion 31 forms a mechanism with four degrees of freedom.
  • the illustrated connecting arm portion 31 includes a base member 32 fixed to the rotating member 41 and a first member 33 operably connected to the base member 32. And a second member 34 operably connected to the first member 33 and a third member 35 operably connected to the second member 34 and operably connected to the mounting portion 37.
  • this connection arm part 31 operation
  • movement of 4 degrees of freedom can be performed by the structure from the rotating member 41 to the mounting part 37.
  • the mounting portion 37 can perform a relative motion with four degrees of freedom with respect to the rotating member 41.
  • any one combination of the third members 35 of the portion 31 be relatively rotatable around an axis that is not parallel to the first rotation axis d ⁇ b> 1 that is the rotation axis of the rotation member 41.
  • the connection that can rotate around the axis that is not parallel to the first rotation axis d1 does not hinder the mounting portion 37 from rotating about the first rotation axis d1 as the rotation member 41 rotates. .
  • the mounting portion 37 can move with the upper arm following the operation at the shoulder joint centered on the axis that is not parallel to the first rotation axis d1. it can.
  • the first member 33 of the connecting arm portion 31 is rotatable relative to the rotating member 41 around the third rotation axis d3.
  • the third rotation axis d3 is not parallel to the first rotation axis d1.
  • the third rotation axis d3 is perpendicular to the first rotation axis d1.
  • the third rotation axis d3 is also perpendicular to the second rotation axis d2.
  • a fourth rotation axis d4 that is a relative rotation axis between the first member 33 of the connection arm portion 31 and the second member 34 of the connection arm portion 31 is not parallel to the first rotation axis d1 and is particularly illustrated. In this example, it is perpendicular to the first rotation axis d1.
  • the fourth rotation axis d4 is also perpendicular to the second rotation axis d2.
  • a fifth rotation axis d5 that is a relative rotation axis between the second member 34 of the connection arm portion 31 and the third member 35 of the connection arm portion 31 is not parallel to the first rotation axis d1 and is particularly illustrated. In this example, it is perpendicular to the first rotation axis d1.
  • the fifth rotation axis d5 is also perpendicular to the second rotation axis d2.
  • the third rotation axis d3, the fourth rotation axis d4, and the fifth rotation axis d5 are parallel to each other.
  • the third rotation axis d3, the fourth rotation axis d4, and the fifth rotation axis d5 are provided corresponding to the inner and outer rotation axes dc of the shoulder.
  • the first surface is perpendicular to the third rotation axis d3 provided corresponding to the inward and outward rotation motion and includes the distal end side connection position ce2 (FIGS. 10 and 12).
  • the distance lb between the three rotation axes d3 and the tip side connection position ce2 is changed.
  • the assist mechanism 15 includes the brake mechanism 40 and the drive mechanism 70.
  • the brake mechanism 40 includes a rotating member (output shaft) 41 as an output unit of muscle assisting force (assist force).
  • the brake mechanism 40 switches between a state in which free rotation of the rotating member 41 is restricted and a state in which free rotation of the rotating member 41 is allowed.
  • the brake mechanism 40 regulates the relative rotation in at least one direction around the first rotation axis d1 that is the assist axis of the second wearing tool 30 with respect to the first wearing tool 20 by restricting the rotation of the rotating member 41. To do.
  • the brake mechanism 40 has a brake rotating body 60 and a contact member 65 in addition to the rotating member 41.
  • the rotating member 41 can rotate relative to the first mounting tool 20 around the first rotation axis d1 in conjunction with the second mounting tool 30.
  • the contact member 65 can move in a direction non-parallel to the direction perpendicular to the assist axis. That is, the contact member 65 is movable in a direction parallel to the assist axis (first rotation axis d1) or in a direction inclined to the assist axis (first rotation axis d1).
  • the contact member 65 can move toward and away from the brake rotating body 60 by moving in a predetermined direction.
  • the contact member 65 can move along a predetermined direction to approach the brake rotating body 60, and can move along the predetermined direction to be separated from the brake rotating body 60.
  • the brake mechanism 40 is a so-called disc brake mechanism.
  • the brake mechanism 40 includes a casing 50 that supports the brake rotating body 60 and the contact member 65. As shown in FIGS. 3 and 4, the casing 50 is fixed to the first mounting tool 20 via the support arm 25. As shown in FIG. 5, the casing 50 includes a first casing portion 51 and a second casing portion 52. A bearing 42 is provided in each of the first casing portion 51 and the second casing portion 52. By this bearing 42, the rotating member 41 is rotatably supported by the casing 50. That is, the casing 50 defines a first rotation axis (assist axis) d ⁇ b> 1 that is a rotation axis of the rotation member 41. In the illustrated example, the rotating member 41 passes through the casing 50.
  • the brake rotating body 60 is accommodated in a space defined between the first casing portion 51 and the second casing portion 52.
  • the first casing portion 51 is formed with a hole 51a that opens into this space.
  • a contact member 65 is accommodated in the hole 51a.
  • the hole 51 a functions as a cylinder 54 that operates the contact member 65.
  • eight cylinders 54 are formed in the first casing portion 51, and a total of eight contact members 65 are supported.
  • the eight contact members 65 are arranged at equal intervals on a circumference centered on the first rotation axis d1. That is, the eight contact members 65 are arranged around the rotating member 41.
  • the cylinder 54 extends in parallel with the first rotation axis d1. Accordingly, in the illustrated example, the contact member 65 moves in a direction parallel to the first rotation axis d1. In the first casing portion 51, flow paths 55 that lead to the eight cylinders 54 are formed. By injecting fluid from the flow path 55, the contact member 65 moves in a direction approaching the brake rotating body 60.
  • the brake rotor 60 can move somewhat in the space between the first casing portion 51 and the second casing portion 52 along the first rotation axis d1. A surface of the second casing portion 52 that faces the brake rotating body 60 functions as a pressure receiving surface 53.
  • the brake rotator 60 pressed by the contact member 65 contacts the pressure receiving surface 53 of the second casing portion 52, so that not only the brake rotator 60 and the contact member 65, but also the brake rotator 60 and the pressure receiving surface.
  • a frictional force is also generated between the terminal 53 and the terminal 53. That is, in addition to the braking force that restricts the relative rotation between the brake rotator 60 and the contact member 65, the braking force that restricts the relative rotation between the brake rotator 60 and the pressure receiving surface 53 is also generated.
  • the brake mechanism 40 further includes a one-way clutch 45 provided between the rotating member 41 and the brake rotating body 60.
  • the one-way clutch refers to a mechanism that transmits rotational force only in one direction, and includes a one-way bearing as a specific example.
  • the one-way clutch is configured as a one-way bearing.
  • the outer ring of the one-way clutch 45 is fixed to the brake rotating body 60, and the inner ring of the one-way clutch 45 holds the rotating member 41.
  • the one-way clutch 45 restricts relative rotation in one direction around the first rotation axis (assist axis) d1 of the rotating member 41 with respect to the brake rotating body 60.
  • the one-way clutch 45 allows relative rotation in the other direction opposite to one direction around the first rotation axis (assist axis) d1 with respect to the brake rotating body 60 of the rotating member 41.
  • the rotation of the one-way clutch 45 causes the rotating member 41 to be the first in the state where the contact member 65 is operated and the rotation of the brake rotating body 60 around the first rotation axis d1 is braked. Although it can rotate in the other direction around the one rotation axis d1, it cannot be rotated in one direction around the first rotation axis d1. That is, while the brake mechanism 40 is generating a braking force, the second mounting tool 30 can rotate in the other direction around the first rotation axis d1 with respect to the first mounting tool 20. The rotation cannot be performed in one direction around the first rotation axis d1.
  • the brake mechanism 40 when the brake mechanism 40 is generating a braking force, an operation for lifting the upper arm is allowed, but an operation for lowering the upper arm is restricted. That is, the lifting operation of the upper arm is permitted while assisting the muscular strength so that the upper arm does not fall.
  • the one-way clutch 45 does not function in a state in which the rotation of the brake rotating body 60 around the first rotation axis d1 is not braked, the second mounting tool 30 is the first mounting tool. 20 can be freely rotated.
  • the drive mechanism 70 that drives the brake mechanism 40 will be described.
  • the brake mechanism 40 is driven by fluid pressure. Therefore, as shown in FIG. 1, the drive mechanism 70 includes a fluid pressure source 71 and a flow path forming member 72 that allows the fluid pressure source 71 and the flow path 55 of the brake mechanism 40 to communicate with each other.
  • the fluid pressure source 71 includes a pressure tank and a pump.
  • the fluid supplied from the fluid pressure source 71 is appropriately selected according to the brake mechanism 40, and for example, a gas such as air, nitrogen, or an inert gas, or a liquid such as water or oil can be employed.
  • the flow path forming member 72 is selected according to the fluid supplied from the fluid pressure source 71, and for example, a rubber tube or the like can be used.
  • the supply and stoppage of the fluid from the brake mechanism 40 are controlled by the control unit 13.
  • the control unit 13 activates the brake mechanism 40 based on a sensor attached to the muscle force assisting device 10 or an operation from the wearer of the muscle force assisting device 10.
  • the wearer wears the muscle strength assisting device 10.
  • the first mounting tool 20 is mounted on the trunk using the mounting plate 21 and the mounting belt 22.
  • the mounting portion 37 is mounted on the upper arm using the mounting body 38 and the auxiliary belt 39 of the mounting portion 37.
  • the muscle strength assisting device 10 is devised to reduce the sense of restraint experienced by the wearer. Therefore, the rotation axes d1, d2, and d3 between the components of the muscle force assisting device 10 do not necessarily need to coincide with the rotation axes da, db, and dc of the shoulder joint. Therefore, since the necessity for exact alignment can be eliminated, the wearer can easily wear the muscle force assisting apparatus 10 in a short time.
  • the second wearing device 30 rotates around the first rotation axis d1 with respect to the first wearing device 20.
  • the upper arm of the wearer rotates relative to the trunk about the bending / extension axis da.
  • the mounting portion 37 attached to the upper arm rotates relative to the first wearing tool 20 attached to the trunk about the first rotation axis d1.
  • the first rotation axis d1 does not coincide with the bending / extension axis da, as shown in FIGS.
  • the bending / extension movement of the upper arm causes the bending / extension axis da and the mounting portion 37 to be attached to the upper arm.
  • the angle ⁇ x formed by the direction connecting the parts (longitudinal direction of the upper arm) dx and the direction d ⁇ connecting the first rotation axis d1 and the mounting portion 37 changes. Therefore, along with this bending and stretching exercise, the mounting portion 37 acts to change the direction with respect to the upper arm. At this time, the wearer feels restraint and also pains in the upper arm. The wearer tries to bend or extend the arm while moving the position of the shoulder, for example, due to the sense of restraint.
  • the illustrated muscle strength assisting apparatus 10 as a first device for reducing the sense of restraint, in the projection in a direction parallel to the first rotation axis d1 that is the assist axis, that is, on the paper surface of FIGS.
  • the projection 37 can be adjusted with respect to the connecting arm 31 in the projection.
  • the third member 35 and the mounting portion 37 of the connecting arm portion 31 are connected so as to be relatively rotatable about the sixth rotation axis d6. Therefore, the mounting portion 37 described here rotates around the sixth rotation axis d6 with respect to the connecting arm portion 31 to automatically change the orientation of the mounting portion 37 with respect to the connecting arm portion 31 according to the longitudinal direction of the upper arm. Can be adjusted.
  • the relative rotation axis (sixth rotation axis) d ⁇ b> 6 between the connecting arm portion 31 and the mounting portion 37 is a direction connecting both ends of the connecting arm portion 31 ( More precisely, it is not parallel to the direction d ⁇ in the direction connecting the connecting position ce1 of the connecting arm portion 31 to the rotating member 41 and the connecting position ce2 of the connecting arm portion 31 to the mounting portion 37.
  • the angle ⁇ formed by the sixth rotation axis d6 with respect to the direction d ⁇ is set to be greater than 45 ° and less than 135 °, more preferably greater than 60 ° and less than 120 °. Preferably, the angle is set to 90 °. According to this configuration, the relative rotation between the connecting arm portion 31 and the mounting portion 37 around the sixth rotation axis d6 is effectively used for the rotation of the orientation adjustment to deal with the restraint feeling that is a problem here. It becomes like this.
  • the angle ⁇ formed by the relative rotation axis (third rotation axis d3) between the connecting arm portion 31 and the mounting portion 37 with respect to the first rotation axis d1 forming the assist axis is 45 °. Is set to be less than, more preferably set to be less than 30 °, and most preferably the angle ⁇ is set to be 0 °. According to this configuration, the relative rotation between the connecting arm portion 31 and the mounting portion 37 around the sixth rotation axis d6 is effectively used for the rotation of the orientation adjustment to deal with the restraint feeling that is a problem here. It becomes like this.
  • connection position ce ⁇ b> 2 in which the connection arm portion 31 and the mounting portion 37 can be relatively rotated is The mounting portion 37 is located in a region in contact with the human body. That is, when the mounting portion 37 rotates with respect to the connecting arm portion 31 about the sixth rotation axis d6, the mounting portion 37 moves relative to the rotation member 41 along the circumference centered on the first rotation axis d1. It is possible to effectively prevent relative movement. That is, the orientation adjustment function of the mounting portion 37 for effectively eliminating the sense of restraint can efficiently maintain the transmission of the muscle force assisting force from the rotating member 41 to the mounting portion 37.
  • the movement trajectories around the rotation axis d1 do not match. That is, apart from the restraint feeling related to the difference between the orientation of the mounting portion 37 and the orientation of the upper arm to which the mounting portion 37 is attached, it is related to the difference between the position of the mounting portion 37 and the position of the upper arm to which the mounting portion 37 is attached. A sense of restraint also occurs.
  • the second mounting tool 30 is mounted orthogonally to the first rotation axis d 1 that is the rotation axis of the rotating member 41.
  • the connection arm portion 31 is connected to the rotating member 41.
  • the distance la between the base end side connection position ce1 that is the position and the distal end side connection position ce2 that is the connection position of the coupling arm portion 31 to the mounting portion 37 changes. In other words, in the plane of FIGS.
  • the separation interval la along the direction to be changed changes.
  • the separation interval (distance) la is longer in the state shown in FIG. 10 than in the state shown in FIG. Due to the change in the distance la between the proximal end side connection position ce1 and the distal end side connection position ce2, the movement of the mounting portion 37 moves to the movement locus of the part where the upper arm mounting portion 37 is attached in the bending / extending movement.
  • the trajectories can be matched. Therefore, the restraint feeling of the wearer who wears the muscular strength assisting device 10 during the flexion / extension exercise can be effectively reduced.
  • the rotating member 41, the connecting arm portion 31, and the mounting portion 37 constitute a mechanism with four degrees of freedom.
  • the connection position ce ⁇ b> 2 of the mounting portion 37 and the connecting arm portion 31 is adjusted in the plane including the first rotation axis d ⁇ b> 1 while adjusting the orientation of the mounting portion 37. adjusting both in a direction parallel to d1 and in a direction orthogonal to the first rotation axis d1, and adjusting the orientation of the mounting portion 37 in a plane orthogonal to the first rotation axis d1. Can be possible.
  • the operation of the joint can be realized with reduced sense of restraint. it can. Furthermore, the sense of restraint can also be reduced with respect to operations other than the motions of the joints that are intended to assist the muscular strength (in the above-described example, inward and outward rotation motions and internal and external rotation motions other than bending and stretching motions).
  • the joints of the human body can rotate around a plurality of axes orthogonal to each other.
  • the shoulder joint is a single joint, and the flexion / extension movement, the adduction / abduction movement, and the internal / external rotation are centered on the three axes da, db, dc orthogonal to each other. This is possible as a relative rotation.
  • the muscle force assisting device disclosed in Japanese Patent Laid-Open No. 2009-268839 is provided with three relative rotational axes and the three relative rotational axes intersect at one place. I have to.
  • a wearer wears a muscular strength auxiliary device so that a position where these three relative rotation axes intersect may be located on a wearer's joint.
  • making the three rotation axes intersect at one place causes a complicated increase in size of the muscular strength assisting device.
  • the illustrated muscular strength assisting device 10 it is possible to effectively reduce the sense of restraint experienced by the wearer during internal and external rotation and internal / external rotation.
  • the wearer turns the arm inward or outward while moving the position of the shoulder with a sense of restraint.
  • the third rotation axis d3 and the distal end are in a plane orthogonal to the third rotation axis d3 and including the distal end side connection position ce2, that is, in the plane shown in FIGS.
  • the distance lb from the side connection position ce2 changes.
  • the separation distance along the direction orthogonal to the third rotation axis d3 between the third rotation axis d3 and the distal end side connection position ce2. Will change.
  • the movement of the mounting portion 37 moves to the movement locus of the portion where the upper arm mounting portion 37 is attached in the adduction / exversion motion.
  • the trajectories can be matched. Therefore, the restraint feeling of the wearer wearing the muscular strength assisting device 10 during the adduction / exversion motion can be effectively reduced.
  • the second mounting tool 30 performs the second rotation with respect to the first mounting tool 20. It rotates about the axis d2.
  • the upper arm of the wearer rotates relative to the trunk about the inner / outer rotation axis dc.
  • the mounting portion 37 attached to the upper arm rotates relative to the central frame 23 of the first wearing tool 20 attached to the trunk about the second rotation axis d2.
  • the distance between the second rotation axis d2 and the distal end side connection position ce2 changes in a plane orthogonal to the second rotation axis d2 and including the distal end side connection position ce2. .
  • the separation distance along the direction perpendicular to the second rotation axis d2 between the second rotation axis d2 and the distal end side connection position ce2. Will change.
  • the movement of the mounting portion 37 moves to the movement locus of the portion where the upper arm mounting portion 37 is attached in the internal rotation / external rotation motion.
  • the trajectories can be matched. Therefore, the restraint feeling of the wearer wearing the muscle force assisting device 10 during the internal rotation / external rotation motion can be effectively reduced.
  • the control unit 13 controls whether or not the muscle strength assisting force is supplied based on a wearer's operation or a detection result by a sensor (not illustrated).
  • the second wearing tool 30 can freely rotate with respect to the first wearing tool 20 around the first rotation axis d1. At this time, the wearer of the muscle force assisting apparatus 10 can move the upper arm without feeling a great sense of restraint.
  • a fluid for example, compressed gas is supplied from the fluid pressure source 71 of the drive mechanism 70 to the flow path 55 of the casing 50 via the flow path forming member 72 according to a control signal from the control unit 13.
  • the contact member 65 moves so as to approach the brake rotating body 60 in the cylinder 54.
  • the contact member 65 contacts the brake rotating body 60, and further brings the brake rotating body 60 into contact with the pressure receiving surface 53.
  • the brake rotator 60 is braked relative to the casing 50 and the first mounting tool 20 around the first rotation axis d1.
  • the rotation member 41 held by the brake rotator 60 via the one-way clutch 45 is restricted from rotating in one direction around the first rotation axis d1 with respect to the brake rotator 60 and the first mounting tool 20.
  • the rotation of the second mounting tool 30 in one direction around the first rotation axis d1 relative to the first mounting tool 20 is restricted.
  • the rotation member 41 is allowed to rotate in the other direction around the first rotation axis d1 with respect to the brake rotating body 60 and the first wearing tool 20 by the relative rotation between the inner ring and the outer ring in the one-way clutch 45.
  • the second mounting tool 30 is allowed to rotate in the other direction around the first rotation axis d1 with respect to the first mounting tool 20.
  • the wearer of the muscle strength assisting device 10 is restricted from lowering its upper arm. That is, the wearer is muscularly assisted to hold the upper arm in a lifted state.
  • the wearer of the muscular strength assisting device 10 is allowed to further lift the upper arm. That is, the wearer can also lift by himself while being supported from below. Also from this point, the restraining force received by the wearer can be reduced.
  • the restriction of the relative rotation of the second mounting tool 30 with respect to the first mounting tool 20 by the brake mechanism 40 is caused by friction between the brake rotating body 60, the contact member 65, and the pressure receiving surface 53.
  • the contact member 65 moves in a direction orthogonal to the first rotation axis d ⁇ b> 1, i.e., in a direction not parallel to the plate surface direction of the brake rotator 60, and contacts the main surface of the brake rotator 60.
  • the pressure receiving surface 53 is in contact with the main surface on the opposite side of the brake rotating body 60. Therefore, in the brake mechanism 40, the brake rotating body 60 can be stopped at an arbitrary position.
  • the second mounting tool 30 can be held at a desired relative position with respect to the first mounting tool 20. Therefore, the wearer of the muscular strength assisting device 10 can receive muscular strength assist in a desired posture. For example, an operation in a state where a device such as a welding tool is held and an arm is lifted can be performed with an appropriate posture while receiving muscle strength assistance.
  • the control unit 13 stops the supply of the fluid from the fluid pressure source 71 to the flow path 55. At this time, the fluid leaks from the space between the first casing part 51 and the second casing part 52 or is forcibly discharged. Thereby, the frictional force between the brake rotator 60 and the contact member 65 or the pressure receiving surface 53 disappears, and the supply of the muscular strength assisting force is stopped.
  • the wearer can freely rotate the second wearing tool 30 with respect to the first wearing tool 20 around the first rotation axis d1, and can lower the upper arm.
  • the muscle force assisting apparatus 10 has a pair of brake mechanisms 40 that are spaced apart in the lateral direction (width direction).
  • the right brake mechanism 40 and the left brake mechanism 40 preferably operate symmetrically with respect to the center of the muscle force assisting apparatus 10 in the lateral direction.
  • the contact member 65 and the brake rotating body 60 are moved to the left in the lateral direction by the fluid supply from the drive mechanism 70.
  • the contact member 65 and the brake rotating body 60 are preferably moved to the right side in the lateral direction by the fluid supply from the drive mechanism 70.
  • the muscle force assisting device 10 includes the first wearing tool 20 attached to one of the two parts of the human body between which the joint is positioned, and the first centered on the assist axis d1.
  • a second mounting tool 30 that is rotatable relative to the mounting tool 20 and is attached to the other of the two parts, and at least one of the second mounting tool 30 with respect to the first mounting tool 20 around the assist axis d1.
  • a brake mechanism 40 that restricts relative rotation in the direction.
  • the brake mechanism 40 includes a brake rotating body 60 that rotates relative to the first mounting tool 20 in conjunction with the second mounting tool 30, and a direction that is not parallel to the direction perpendicular to the assist axis d1 (that is, the assist axis d1).
  • a contact member 65 that moves in a direction that is not perpendicular to the brake rotor 60 and contacts and separates from the brake rotator 60. And the contact member 65 contacts the brake rotating body 60, and the free rotation with respect to the 1st mounting tool 20 of the 2nd mounting tool 30 centering on the assist axis line d1 is controlled.
  • a muscle force assisting device 10 when the contact member 65 contacts the brake rotating body 60, free relative rotation of the brake rotating body 60 is restricted, and thereby, the first that can be interlocked with the brake rotating body 60. 2
  • the free relative rotation of the mounting tool 30 with respect to the first mounting tool 20 can be restricted.
  • the second wearing tool 30 is caused by friction between the brake rotating body 60 and other members (for example, the contact member 65 and the pressure receiving surface 53) when the contact member 65 contacts the brake rotating body 60.
  • the relative rotation with respect to the first mounting tool 20 can be restricted. Therefore, the second wearing tool 30 can be held at an arbitrary relative position with respect to the first wearing tool 20. Thereby, the wearer of the muscular strength assisting apparatus 10 can receive the muscular strength assisting force with a desired posture suitable for work.
  • the muscular strength assisting device 10 includes the rotating member that the brake mechanism 40 is supported so as to be rotatable about the assist axis d ⁇ b> 1 with respect to the first mounting tool 20 and connected to the second mounting tool 30.
  • a one-way clutch 45 provided between the (shaft) 41 and the brake rotating body 60 is further provided.
  • the one-way clutch 45 regulates the relative rotation of the rotating member 41 in one direction around the assist axis d1 with respect to the brake rotating body 60 and the one direction around the assist axis d1 of the rotating member 41 with respect to the brake rotating body 60. Holds the rotating member 41 so as to allow relative rotation in the opposite other direction.
  • the relative rotation of the second mounting tool 30 in one direction with respect to the first mounting tool 20 is restricted, while the second direction of the second mounting tool 30 with respect to the first mounting tool 20 is restricted.
  • Relative rotation to is allowed.
  • operativity of the wearer who wore the muscular strength assisting device 10 can be improved, and further, the restraint feeling received when the muscular strength assisting device 10 is worn can be reduced.
  • the contact member 65 is driven by atmospheric pressure or hydraulic pressure.
  • Such a muscular strength assisting device 10 can be easily reduced in size and can secure a large braking force for restricting the rotation of the brake rotating body 60.
  • the brake rotating body 60 is moved by being pressed by the contact member 65 and contacts the pressure receiving surface supported by the first wearing tool 20. According to such a muscular strength assisting device 10, a large contact area between the pressure receiving surface 53 and the brake rotator 60 can be secured, and a large braking force for restricting the rotation of the brake rotator 60 can be secured.
  • the pressure receiving surface 53 is formed by the casing 50 that houses the brake rotating body 60. According to such a muscular strength assisting device 10, the muscular strength assisting device 10 can be miniaturized because the casing 50 forms the pressure receiving surface 53.
  • the brake rotating body 60 is located between the contact member 65 and the pressure receiving surface 53 in a direction parallel to the assist axis d1. According to such a muscular strength assisting device 10, the brake rotator 60 contacts both of the contact member 65 and the pressure receiving surface 53. Therefore, when the contact member 65 is operated, a large frictional force is generated, and a large braking force for restricting the rotation of the brake rotating body 60 can be ensured.
  • the muscle force assisting device 10 includes the first wearing tool 20 attached to one of the two parts of the human body between which the joint is positioned, and the first centered on the assist axis d1.
  • a second mounting tool 30 that is rotatable relative to the mounting tool 20, is attached to the other of the two parts, and is supported by the first mounting tool 20 so as to be rotatable about the assist axis d1. 2 and a rotating member (rotating shaft) 41 connected to the mounting tool 30.
  • the second mounting tool 30 is connected to the mounting portion 37 attached to the other of the two parts of the human body, and extends from the rotating member 41 in a direction non-parallel to the assist axis d1 to connect the rotating member 41 and the mounting portion 37.
  • a connecting arm portion 31 to be connected.
  • the connecting arm portion 31 and the mounting portion 37 are connected so as to be relatively rotatable.
  • the orientation of the mounting portion 37 relative to the connecting arm portion 31 in observation from a direction parallel to the assist axis can be adjusted. Therefore, even if the assist axis d1 is deviated from the rotation axis da of the joint that tries to assist the muscular strength, the movement of the joint can be realized with a reduced sense of restraint.
  • the configuration of the muscle strength assisting device 10 can be simplified and the positioning of the strength assisting device 10 on the human body is easy. Can be
  • connection position ce2 where the connection arm portion 31 and the mounting portion 37 are relatively rotatable is within the region of the mounting portion 37 that contacts the human body. Is located.
  • the orientation of the mounting portion 37 relative to the connecting arm portion 31 in observation from a direction parallel to the assist axis d ⁇ b> 1 can be adjusted more flexibly. A sense of restraint at the time of wearing can be reduced effectively.
  • the relative rotation axis d6 between the connecting arm portion 31 and the mounting portion 37 is not parallel to the direction d ⁇ connecting both ends of the connecting arm portion 31. According to such a muscular strength assisting device 10, it is possible to effectively adjust the orientation of the mounting portion 37 relative to the connecting arm portion 31 in observation from a direction parallel to the assist axis d ⁇ b> 1, and when the muscular strength assisting device 10 is mounted. It becomes possible to reduce a sense of restraint.
  • the angle ⁇ formed by the relative rotation axis d6 between the connecting arm portion 31 and the mounting portion 37 with respect to the direction d ⁇ connecting both ends of the connecting arm portion 31 is greater than 45 ° and less than 135 °. It has become.
  • the connecting arm portion 31 and the mounting portion 37 relatively rotate, thereby effectively changing the orientation of the mounting portion 37 with respect to the connecting arm portion 31 in observation from a direction parallel to the assist axis d ⁇ b> 1.
  • a sense of restraint at the time of wearing muscular strength auxiliary device 10 can be reduced effectively.
  • the angle ⁇ formed by the relative rotation axis d6 between the connecting arm portion 31 and the mounting portion 37 with respect to the assist axis d1 is less than 45 °.
  • the connecting arm portion 31 and the mounting portion 37 relatively rotate, thereby effectively changing the orientation of the mounting portion 37 with respect to the connecting arm portion 31 in observation from a direction parallel to the assist axis d ⁇ b> 1.
  • the joint is a shoulder joint
  • the second wearing tool 30 is attached to the upper arm.
  • the upper arm has a longitudinal direction
  • the mounting portion 37 of the second mounting tool 30 is preferably attached at a position separated from the shoulder joint.
  • the orientation of the mounting portion 37 attached to the upper arm in this way with respect to the connecting arm portion 31 greatly changes as the upper arm moves with respect to the trunk when the assist axis d1 deviates from the rotational axis da of the shoulder joint. Therefore, the muscular strength assisting apparatus 10 described here is extremely suitable for assisting muscular strength in the position or movement of the upper arm relative to the trunk.
  • the distance la between is changed. That is, the position of the mounting portion 37 in observation from a direction parallel to the assist axis d1 can be adjusted. Therefore, even if the assist axis d1 is deviated from the rotation axis da of the joint that tries to assist the muscular strength, the movement of the joint can be realized with a reduced sense of restraint.
  • the configuration of the muscle force assisting device 10 can be simplified and miniaturized, and the muscle force assisting device 10 can be easily positioned on the human body.
  • the rotating member 41, the connecting arm portion 31, and the mounting portion 37 constitute a mechanism with four degrees of freedom.
  • the connection position ce ⁇ b> 2 of the mounting portion 37 and the connecting arm portion 31 is parallel to the assist axis d ⁇ b> 1 while adjusting the orientation of the mounting portion 37 in the plane including the assist axis d ⁇ b> 1. Both the direction and the direction orthogonal to the assist axis d1 can be adjusted, and the orientation of the mounting portion 37 in the plane orthogonal to the assist axis d1 can be adjusted.
  • the joint operation can be realized with a reduced sense of restraint.
  • the sense of restraint can also be reduced with respect to operations other than the motions of the joints that are intended to assist the muscular strength (in the above-described example, inward and outward rotation motions and internal and external rotation motions other than bending and stretching motions).
  • the connecting arm portion 31 includes the first member 33 operable with respect to the rotating member 41, the second member 34 operably connected to the first member 33, and the second member 34. And a third member 35 operatively connected to the mounting portion 37. According to such a connecting arm portion 31, a four-degree-of-freedom link mechanism can be realized with a simple and inexpensive configuration.
  • the rotating member 41 and the first member 33 of the connecting arm portion 31, the first member 33 of the connecting arm portion 31, the second member 34 of the connecting arm portion 31, and the connecting arm portion 31 is relatively rotatable about axes d3, d4, and d5 that are not parallel to the assist axis d1. According to such a connecting arm portion 31, it is possible to reduce a sense of restraint even with respect to operations other than the operation of a joint that attempts to assist muscle strength.
  • the connecting arm portion 31 functions not only as a means for reducing a sense of restraint on the motion of a joint that is trying to assist muscle strength, but also as a means for enabling another motion different from the motion of the joint. . Moreover, the sense of restraint can be effectively reduced for other operations.
  • the relative rotation of the first wearing tool 20 and the second wearing tool 30 around the assist axis d1 enables the joint to bend or advance, and is not parallel to the assist axis d1.
  • the joint can add or rotate. Therefore, it is possible to realize the internal and external motions of the joint while reducing the sense of restraint while assisting the flexion and extension motions of the joint without giving an excessive sense of restraint. Can do.
  • the brake mechanism 40 when the contact member 65 moves and presses the brake rotator 60, the brake rotator 60 moves and contacts the pressure receiving surface 53.
  • the friction material 56 may be laminated on at least one of the surfaces of the first casing portion 51 that are in contact with the brake rotating body 60.
  • one or more contact members 65 may be disposed on both sides of the brake rotator 60, and the contact members 65 may come in contact with and separate from both sides of the brake rotator 60.
  • the second casing portion 52 has a symmetric configuration with the first casing portion 51.
  • the first casing portion 51 has a cylinder 54 formed by a hole 51a.
  • the pressure receiving surface 53 is not provided.
  • the brake rotator 60 may be stationary at the first rotation axis d ⁇ b> 1 with respect to the rotating member 41. In the example shown in FIG. 14, it is possible to obtain a braking force due to friction between the brake rotator 60 and the contact members 65 provided on both sides of the brake rotator 60.
  • two brake rotators 60 may be provided as in the example shown in FIG.
  • the second casing portion 52 of the casing 50 has a symmetric configuration with the first casing portion 51 in the above-described embodiment.
  • a pair of brake rotating bodies 60 are provided on the rotating member 41.
  • a pressure receiving member 57 is provided between the pair of rotating members 41.
  • the pressure receiving member 57 is fixed to the casing 50 or forms a part of the casing 50.
  • the pressure receiving member 57 has a pair of pressure receiving surfaces 53 that face both sides along the first rotation axis d1.
  • the casing 50 includes a central casing portion 58 and a pair of side casing portions 59 provided on both sides of the central casing portion 58 on the first rotation axis d1.
  • two contact members 65 are arranged side by side in a direction parallel to the first rotation axis d1.
  • a plurality of pairs of contact members 65 for example, eight pairs of contact members 65 are arranged around the first rotation axis d1, as in the above-described embodiment.
  • a channel 55 is formed between the two contact members 65 arranged in the first rotation axis d1.
  • the two contact members 65 are driven by the drive mechanism 70 to move away from each other along the first rotation axis d1.
  • a brake rotating body 60 is disposed between the contact member 65 and the side casing portion 59 corresponding to the contact member 65.
  • each brake rotator 60 has a frictional force between the contact member 65 and the pressure receiving surface 53 of the side casing portion 59, similarly to the brake rotator described in the above-described embodiment. To generate a braking force.
  • the example in which the one-way clutch 45 is provided has been described.
  • the present invention is not limited to this example, and the one-way clutch 45 may be omitted.
  • the pressure receiving surface 53 is not essential, and the braking force may be generated only by the frictional force between the contact member 65 and the brake rotating body 60.
  • the brake mechanism 40 may include an auxiliary contact member 66 that comes into contact with the brake rotating body 60 under conditions different from the contact member 65.
  • the brake rotating body in a state in which the free rotation of the second mounting tool 30 with respect to the first mounting tool 20 around the first rotation axis d1 that is the assist axis is restricted. 60 operates with respect to the 1st mounting tool 20 with the contact member 65 by the external force which resists the said regulation. With the operation of the brake rotator 60, the brake rotator 60 and the auxiliary contact member 66 come into contact with each other to generate further braking force.
  • FIGS. 17 to 19 will be described in more detail.
  • the casing 50 is supported by a support base 75 fixed to the first mounting tool 20.
  • the casing 50 includes a first casing portion and a second casing portion 52 that are not shown.
  • the 1st casing part which is not illustrated has cylinder 54 and channel 55 which were formed by hole 51a like one embodiment mentioned above, and holds contact member 65 so that operation is possible.
  • the second casing portion 52 accommodates the brake rotator 60 and has a pressure receiving surface (not shown) at a position facing the brake rotator 60 along the first rotation axis d1.
  • the brake mechanism 40 further includes a biasing unit 76 that biases the casing 50.
  • the second casing portion 52 By resisting the urging force from the urging means 76, the second casing portion 52 operates with respect to the support base 75.
  • the urging means 76 is composed of a compression spring.
  • the 2nd casing part 52 can move to an up-down direction.
  • a notch 52 a is provided below the second casing portion 52.
  • the brake rotator 60 is exposed from the second casing portion 52 in the radial direction around the first rotation axis d1 through the notch 52a.
  • An auxiliary contact member 66 is provided on the support base 75. The auxiliary contact member 66 extends into the notch 52 a of the second casing portion 52.
  • FIG. 17 shows a state in which the connecting arm portion 31 can freely rotate with respect to the rotating member 41 around the first rotation axis d1.
  • the contact member 65 presses the brake rotating body 60, and the brake rotating body 60 is in contact with the second casing portion 52.
  • the brake rotating body 60 and the rotating member 41 are restricted from freely rotating with respect to the casing 50 and the first mounting tool 20 around the first rotation axis d1.
  • the connecting arm portion 31 is lifted, and the upper arm is lifted together with the second wearing tool 30.
  • the second wearing tool 30 is restricted from rotating together with the rotating member 41 in one direction (the clockwise direction in FIGS. 17 to 19) about the first rotation axis d1.
  • the auxiliary contact member 66 comes into contact with the brake rotating body 60 that operates together with the contact member 65 with respect to the first wearing tool 20.
  • the braking force is further enhanced by the friction between the auxiliary contact member 66 and the brake rotating body 60.
  • the brake rotating body 60 is in a state where the free rotation of the second mounting tool 30 around the assist axis d1 with respect to the first mounting tool 20 is restricted.
  • the first mounting tool 20 supports the first mounting tool 20 so as to operate with the contact member 65 by an external force against the regulation.
  • the contact member 65 comes into contact with the brake rotating body 60, and relative rotation of the second wearing tool 30 around the assist axis d ⁇ b> 1 in one direction with respect to the first wearing tool 20 is restricted. .
  • the brake rotator 60 is applied to the first mounting tool 20 together with the contact member 65 by an external force that rotates the second mounting tool 30 relative to the first mounting tool 20 in one direction around the assist axis d1. It works against.
  • the brake mechanism 40 further includes an auxiliary contact member 66 that comes into contact with the brake rotating body 60 that operates together with the contact member 65 with respect to the first wearing tool 20.
  • the brake rotating body 60 and the auxiliary contact member 66 further Contact to create additional frictional forces. Accordingly, a larger braking force for restricting the rotation of the brake rotating body 60 is ensured, and the second mounting tool 30 can be stably held at a desired position with respect to the first mounting tool 20.
  • the brake rotating body 60 and the contact member 65 are moved with respect to the first wearing tool 20 in a direction non-parallel to the assist axis d1 by an external force, and the auxiliary contact is made.
  • the member 66 contacts the brake rotating body 60 from the radial direction centering on the assist axis d1.
  • the auxiliary contact member 66 can be disposed at a position where it does not interfere with the contact member 65. Therefore, it is possible to effectively increase the braking force for restricting the rotation of the brake rotating body 60 while effectively preventing the muscle force assisting apparatus 10 from becoming complicated and large.
  • the brake mechanism 40 further includes a casing 50 that supports the brake rotating body 60 and the contact member 65, and the casing 50 is operable on the first wearing tool 20. It is supported. According to such a muscular strength assisting device 10, the contact member 65 and the brake rotating body 60 supported by the casing 50 can move with respect to the first wearing tool 20 while maintaining the contact state. Thereby, the stepwise increase of the braking force for restricting the rotation of the brake rotating body 60 can be stably obtained.
  • the brake mechanism 40 further includes a biasing means 76 for biasing the casing 50.
  • the external force moves the casing 50 together with the brake rotating body 60 and the contact member 65 with respect to the first mounting tool 20 against the urging force of the urging means 76.
  • Such a muscle force assisting device 10 can be easily reduced in size and can secure a large braking force.
  • the brake rotating body 60 in the state where the brake rotating body 60 is restricted from freely rotating the second mounting tool 30 relative to the first mounting tool 20 around the assist axis d1.
  • the brake rotator 60 can rotate relative to the first wearing tool 20 around the axis that is displaced from the assist axis d1 together with the contact member 65 and the casing 50 by an external force against the regulation. May be.
  • the auxiliary contact member 66 is brought into contact with the brake rotating body 60 and the braking force is increased by friction with the brake rotating body 60.
  • the brake mechanism 40 further includes an auxiliary brake rotating body 61 that rotates in synchronization with the brake rotating body 60 about the assist axis d1, and the auxiliary contact member 66 includes an auxiliary brake. You may make it contact the rotary body 61.
  • the brake mechanism 40 includes a casing 50 that houses the contact member 65 and the brake rotating body 60.
  • the auxiliary brake rotating body 61 is fixed to the rotating member 41 extending from the casing 50 and is rotatable in synchronization with the brake rotating body 60.
  • the casing 50 is supported by the support arm 25 of the first wearing tool 20.
  • the support arm 25 is connected to the side frame 24 so as to be rotatable (swingable) about the seventh rotation axis d7.
  • the casing 50 is rotatable relative to the first wearing tool 20 around the seventh rotation axis d7 that is shifted from the first rotation axis d1 that is the assist axis.
  • the connecting arm portion 31 is lifted, and the upper arm is lifted together with the second mounting tool 30.
  • the second wearing tool 30 is restricted from rotating together with the rotating member 41 in one direction (the clockwise direction in FIGS. 20 to 21) about the first rotation axis d1.
  • a force is applied to rotate the second wearing tool 30 in one direction around the first rotation axis d1 together with the rotating member 41, for example, a force is applied in a direction to lower the upper arm.
  • the arm 25 swings downward against a biasing force from a biasing means (not shown), and the casing 50 moves accordingly.
  • the brake rotating body 60 supported by the first casing portion 51, the contact member 65, the rotating member 41, and the auxiliary brake rotating body 61 supported by the rotating member 41 include the first mounting tool. Operates on the side frame 24 of the. As a result, as shown in FIG. 21, the auxiliary contact member 66 fixed to the side frame 24 comes into contact with the auxiliary brake rotating body 61. Due to the friction between the auxiliary brake rotating body 61 and the auxiliary contact member 66, the braking force for braking the rotation of the rotating member 41 is further increased.
  • the brake mechanism 40 further includes an auxiliary contact member 66 that rotates in synchronism with the brake rotating body 60 about the assist axis d1.
  • the brake rotating body 60 rotates the contact member 65 and the auxiliary brake by an external force against the restriction.
  • the first mounting tool 20 supports the body 61 so as to operate with respect to the first mounting tool 20.
  • the brake mechanism 40 further includes an auxiliary contact member 66 that contacts the auxiliary brake rotator 61 that operates with the brake rotator 60 with respect to the first wearing tool 20.
  • a muscle force assisting device 10 when an external force is applied against the braking force generated by the contact member 65 coming into contact with the brake rotating body 60, the auxiliary brake rotating body 61 and the auxiliary contact member 66 are Further contact causes additional frictional forces. Thereby, a larger braking force for restricting the rotation of the brake rotating body 60 is ensured, and the second mounting tool 30 can be stably held at a desired position with respect to the first mounting tool 20.
  • the brake rotating body 60, the contact member 65, and the auxiliary brake rotating body 61 are first mounted in a direction non-parallel to the assist axis d1 by an external force against the regulation. Move relative to the tool 20.
  • the auxiliary contact member 66 contacts the auxiliary brake rotating body 61 from the radial direction centering on the assist axis d1.
  • the auxiliary contact member 66 can be disposed at a position where it does not interfere with the contact member 65. Therefore, it is possible to effectively increase the braking force for restricting the rotation of the brake rotating body 60 while effectively preventing the muscle force assisting apparatus 10 from becoming complicated and large.
  • the muscle strength assisting device 10 has an example of assisting force that holds the relative positions of the two parts of the human body.
  • the muscle strength assisting device 10 is not limited to this example. You may make it supply the muscular strength auxiliary force which carries out relative operation
  • the brake mechanism 40 includes a rotating member 41 that is supported by the first mounting tool 20 so as to be rotatable about the first rotation axis d ⁇ b> 1, and a brake rotation fixed on the rotating member 41. It has a body (disk) 60 and a pair of contact members 65 (see FIGS. 26 and 27) operatively supported by an auxiliary frame 80 provided on the rotating member 41. The pair of contact members 65 can be brought into contact with and separated from the brake rotating body 60 along an arcuate track centering on a rotation axis d9 (see FIGS. 26 and 27) of a holding arm 84 to be described later.
  • the brake mechanism 40 includes an auxiliary frame 80, an input lever 81, a driven pin 82, a moving body 83, a holding arm, in addition to the rotating member 41, the brake rotating body 60, and the contact member 65. 84 and a positioning member 85.
  • the auxiliary frame 80 is provided on the rotating member 41 and is rotatable with respect to the rotating member 41 about the first rotation axis d1.
  • the auxiliary frame 80 is connected to the first wearing tool 20 via a positioning member 85.
  • the auxiliary frame 80 is positioned at a predetermined position by the positioning member 85.
  • the positioning member 85 is an elastically deformable member, for example, a compression spring. Therefore, the auxiliary frame 80 can be rotated with respect to the first wearing tool 20 around the first rotation axis d1 by elastically deforming the positioning member 85.
  • the input lever 81, the driven pin 82, the moving body 83, and the holding arm 84 are supported by the auxiliary frame 80.
  • the input lever 81 is rotatable (swingable) with respect to the auxiliary frame 80 about the eighth rotation axis d8.
  • the driven pin 82 and the moving body 83 are movable relative to the auxiliary frame 80 in the radial direction about the first rotation axis d1.
  • the driven pin 82 moves in the radial direction in accordance with the operation of the input lever 81.
  • the movable body 83 moves in the radial direction by the movement of the driven pin 82 in the radial direction. As shown in FIGS.
  • a pair of holding arms 84 are disposed so as to be swingable about the ninth rotation axis d9.
  • Each holding arm 84 holds the contact member 65.
  • the pair of holding arms 84 are arranged so that the contact members 65 are in contact with the main surface of the brake rotating body 60 from different sides.
  • the holding arm 84 operates by being pressed in the radial direction by the moving body 83.
  • the holding arm 84 has a roller 84a, and contacts the moving body 83 via the roller 84a.
  • the input lever 81 is connected to the drive mechanism 70.
  • the drive mechanism 70 drives the input lever 81 by pulling the input lever 81.
  • a member that can be expanded and contracted by fluid pressure can be used as the elastic member 73.
  • McKibben artificial muscle known as a fluid pressure actuator can be used as the elastic member 73.
  • the elastic member 73 made of McKibben artificial muscle is expanded and shortened by supplying a fluid (typically gas) to the inside. With this shortening, the elastic member 73 generates a contraction force and pulls in the input lever 81.
  • FIGS. 6 and 27 when the input lever 81 is pulled by the drive mechanism 70, the holding arm 84 operates and the brake rotating body 60 is clamped by the pair of contact members 65. Accordingly, the brake rotating body 60 and the rotating member 41, and further, the second mounting tool 30 connected to the rotating member 41 can freely rotate with respect to the first mounting tool 20 about the first rotation axis d1.
  • Be regulated. 24, 26, and 28 show a state where the input lever 81 is not retracted
  • FIGS. 25, 27, and 29 show a state where the input lever 81 is retracted.
  • the rotating member 41 and the brake rotating body 60 together with the auxiliary frame 80 are centered on the first rotation axis d1.
  • One mounting tool 20 can be rotated. That is, similarly to the above-described embodiment, the rotation of the second mounting tool 30 in one direction around the first rotation axis d1 with respect to the first mounting tool 20 is restricted.
  • the second mounting tool 30 can rotate in the other direction around the first rotation axis d1 with respect to the first mounting tool 20.
  • the drive mechanism 70 further pulls the input lever 81 in a state where the pair of contact members 65 are in contact with the brake rotating body 60 and a braking force is generated, the positioning member 85 is pulled.
  • the auxiliary frame 80 rotates about the first rotation axis d1 against the elastic force.
  • the brake rotating body 60 and the rotating member 41 together with the auxiliary frame 80 also rotate about the first rotation axis d1.
  • the second wearing tool 30 connected to the rotating member 41 can rotate in the other direction around the first rotation axis d ⁇ b> 1 with respect to the first wearing tool 20.
  • the drive mechanism 70 can assist muscle strength in the movement of the human body accompanying the relative rotation of the second wearing tool 30 with respect to the first wearing tool 20, for example, the action of lifting the upper arm.
  • the brake rotator 60 is rotatable about the assist axis.
  • a gear or the like may be appropriately disposed between the rotating member 41 and the brake rotating body 60 may be rotatable about an axis different from the assist axis. According to this example, it becomes possible to arrange the brake mechanism 40 not only on the side of the wearer but also on the back side, so that the strength assisting device 10 can be reduced in size and weight.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Robotics (AREA)
  • Manipulator (AREA)
  • Rehabilitation Tools (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne un dispositif d'aide à la puissance musculaire qui comprend : un premier dispositif de montage fixé, au niveau de l'un de deux sites, sur un corps humain, ces sites comportant un élément d'articulation positionné entre eux ; un second dispositif de montage qui peut tourner autour d'un axe d'assistance, par rapport au premier dispositif de montage, et qui est fixé au niveau de l'autre des deux sites ; et un mécanisme de frein qui limite la rotation du second dispositif de montage autour de l'axe d'assistance par rapport au premier dispositif de montage dans au moins une direction. Le mécanisme de frein comprend un élément rotatif de frein qui tourne en tandem avec le second dispositif de montage, par rapport au premier dispositif de montage, ainsi qu'un élément de contact qui se déplace vers et à partir de l'élément rotatif de frein en se déplaçant dans une direction qui n'est pas parallèle à la direction orthogonale à l'axe d'assistance. L'élément de contact entre en contact avec l'élément rotatif de frein afin de limiter la rotation libre du second dispositif de montage autour de l'axe d'assistance par rapport au premier dispositif de montage.
PCT/JP2017/042470 2016-11-28 2017-11-27 Dispositif d'aide à la puissance musculaire WO2018097302A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780070249.1A CN109937122A (zh) 2016-11-28 2017-11-27 肌力辅助装置
JP2018553010A JP6759357B2 (ja) 2016-11-28 2017-11-27 筋力補助装置

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JP2016-230505 2016-11-28
JP2016230505 2016-11-28

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JP2019094145A (ja) * 2017-11-20 2019-06-20 株式会社クボタ アシスト器具
CN110420082A (zh) * 2019-06-25 2019-11-08 福建省速卖通电子商务有限公司 一种具有矫治力系多部位动态调控功能的智能脊柱矫形器

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JP7319665B2 (ja) * 2019-08-26 2023-08-02 国立大学法人山梨大学 パワーアシスト装置

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JP2016067699A (ja) * 2014-09-30 2016-05-09 パナソニック デバイスＳｕｎｘ竜野株式会社 姿勢保持装置

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JP2007100747A (ja) * 2005-09-30 2007-04-19 Pubot Giken:Kk 回転ブレーキ装置
KR101408092B1 (ko) * 2013-02-19 2014-06-19 주식회사 고영테크놀러지 마그네틱 브레이크

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JPS60103690U (ja) * 1983-12-22 1985-07-15 三菱電機株式会社 鍛造ロボツトのハンド機構
JP2012024883A (ja) * 2010-07-23 2012-02-09 Seiko Epson Corp 駆動源ユニット、及びロボット
JP2014503320A (ja) * 2011-01-18 2014-02-13 レヴィテイト テクノロジーズ，インコーポレイテッド 適応型アームサポートシステムおよび使用方法
JP2016067699A (ja) * 2014-09-30 2016-05-09 パナソニック デバイスＳｕｎｘ竜野株式会社 姿勢保持装置

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Publication number Priority date Publication date Assignee Title
JP2019094145A (ja) * 2017-11-20 2019-06-20 株式会社クボタ アシスト器具
CN110420082A (zh) * 2019-06-25 2019-11-08 福建省速卖通电子商务有限公司 一种具有矫治力系多部位动态调控功能的智能脊柱矫形器

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JP6759357B2 (ja) 2020-09-23
CN109937122A (zh) 2019-06-25

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