JP2018140078A - Leg brace - Google Patents

Abstract

Provided is a technique capable of easily matching the orientation of a foot placement plate member and a foot around a yaw axis without removing a leg brace. A leg brace 20 includes a lower leg brace 22 fixed to a user's lower leg, and a foot placement plate member 23 connected to the lower leg brace 22 for placing the user's foot. The foot placement plate member 23 includes a heel side plate member 31 for placing the heel side of the user's foot, and a toe side plate member 32 for placing the toe side of the user's foot. . The heel side plate member 31 is fixed with respect to the crus brace 22 in the plane intersecting the longitudinal axis of the crus brace 22. The toe side plate member 32 is configured such that the orientation in the plane intersecting the longitudinal axis of the crus orthosis 22 can be adjusted. [Selection] Figure 3

Description

  The present invention relates to a leg brace.

  Patent Document 1 discloses a leg brace that allows an ankle joint to be moved about the yaw axis. As a specific configuration, the leg brace is connected to the leg brace fixed to the user's lower leg through a joint mechanism, and can be rotated in the pitch axis direction of the user's ankle. A foot placement plate member for placing the foot portion, and an adjustment mechanism that enables adjustment of the mounting position of the foot placement plate member with respect to the joint mechanism within a plane that intersects the yaw axis of the foot portion. Yes.

Japanese Patent No. 5299239

  In the configuration of Patent Document 1, when the yaw direction of the user's foot portion and the yaw direction of the footrest plate member are shifted, it is necessary to adjust the yaw direction of the footrest plate member so that they match. . However, if the user wears the leg brace and tries to adjust the yaw direction of the footrest plate member with the foot placed on the footrest plate member, the footrest plate member rotates in the yaw direction. Accordingly, the user's foot part rotates together, and it takes time and effort, for example, to remove the leg brace and separate the user's foot part from the foot placement plate member.

  An object of the present invention is to provide a technique capable of easily matching the orientation of the footrest plate member and the foot portion around the yaw axis without removing the leg brace.

  According to the present invention, a leg brace comprising: a leg brace fixed to a user's leg, and a foot placement plate member connected to the leg brace for placing the user's foot, The foot placement plate member includes a first plate member for placing the heel side of the user's foot, and a second plate member for placing the toe side of the user's foot. The first plate member is fixed with respect to the crus orthosis in a plane intersecting the longitudinal axis of the crus orthosis, and the second plate member is the longitudinal part of the crus orthosis. A leg brace is provided that is configured such that its orientation in a plane that intersects the directional axis is adjustable. According to the above configuration, even when the user wears the leg brace and places the foot on the foot placing plate member, for example, while placing a heel on the first plate member, If the toe side is floated from the second plate member, and the direction of the second plate member around the yaw axis is adjusted in the meantime, the leg placement plate member and The direction of the foot around the yaw axis can be matched.

  According to the present invention, even when the user wears the leg brace and places the foot on the foot placing plate member, for example, while placing a heel on the first plate member, If the toe side is floated from the two plate members and the orientation of the second plate member around the yaw axis is adjusted in the meantime, the foot placing plate member and the foot mounting member can be easily removed without removing the leg brace. The direction of the foot around the yaw axis can be matched.

It is a perspective view of a leg brace. It is an expansion perspective view of a foot placement plate member. It is sectional drawing of a foot mounting plate member.

  Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. 1 to 3.

  FIG. 1 shows a leg brace 20. The leg brace 20 is a brace attached to the user's lower limb and assisting the user's walking motion.

  As shown in FIG. 1, the leg brace 20 includes an upper leg brace 21, a lower leg brace 22, a foot placement plate member 23, a knee joint 24, and an ankle joint 25.

  The upper thigh orthosis 21 is a portion fixed to the user's upper thigh. The upper thigh orthosis 21 includes a U-shaped upper thigh orthosis main body 26 and a ring-shaped detachable belt 27 supported by the upper thigh orthosis main body 26. The upper thigh orthosis 21 is attached to the user's upper thigh via a removable belt 27.

  The lower leg brace 22 is a part fixed to the user's lower leg. The lower leg brace 22 includes two lower leg links 28 and a U-shaped lower leg support portion 29 that connects the two lower leg links 28. The two lower leg links 28 extend along the longitudinal direction of the user's lower leg. The two lower leg links 28 extend substantially parallel to the yaw axis. The lower leg support part 29 is disposed on the back side of the user's lower leg so as to face the calf of the user's lower leg.

  The knee joint 24 is a portion that connects the upper leg brace 21 and the lower leg brace 22 so that the lower leg brace 22 can swing around the pitch axis with respect to the upper leg brace 21. Specifically, the knee joint 24 connects the upper leg body 26 of the upper leg 21 and the two lower leg links 28 of the lower leg 22.

  The leg brace 20 further includes a knee joint motor 30 that generates torque between the upper leg brace 21 and the lower leg brace 22. The knee joint motor 30 generates torque between the upper leg brace 21 and the lower leg brace 22, so that the knee joint motor 30 is an angle around the pitch axis between the upper leg brace 21 and the lower leg brace 22. Control the angle.

  The foot placement plate member 23 is a portion for placing a user's foot. As shown in FIGS. 2 and 3, the foot placement plate member 23 includes a heel side plate member 31 (first plate member), a toe side plate member 32 (second plate member), and two side wall connecting portions 33. And a rotation shaft 34 and a positioning pin 35.

  As shown in FIG. 3, the heel side plate member 31 is for mounting the heel side of the user's foot. The heel side plate member 31 has a flat plate shape, is opposed to the heel of the user's foot in the yaw axis direction, and is configured to be able to contact the heel of the user's foot. The heel side plate member 31 cannot contact the toe side of the user's foot. Specifically, the heel side plate member 31 does not oppose in the yaw axis direction with respect to the main ball and the small heel ball of the user's foot, but in the yaw axis direction with respect to the rib of the user's foot. Yes. A single shaft insertion hole 36 and a plurality of pin insertion holes 37 are formed in the heel side plate member 31. The shaft insertion hole 36 is a through hole that penetrates the heel side plate member 31 in the yaw axis direction, and is disposed vertically below the swinging pitch axis A of the user's ankle. Each of the plurality of pin insertion holes 37 is a through hole that penetrates the heel side plate member 31 in the yaw axis direction, and is formed at a position away from the single shaft insertion hole 36. The plurality of pin insertion holes 37 are formed on the rear side when viewed from the single shaft insertion hole 36. The plurality of pin insertion holes 37 are formed at an equal distance from the single shaft insertion hole 36 and are formed apart from each other.

  As shown in FIG. 3, the toe side plate member 32 is for placing the toe side of the user's foot. The toe side plate member 32 includes a toe side plate body 38 and an overlapping portion 39. The toe side plate main body 38 is a flat plate, is a part that faces the toe side of the user's foot part in the yaw axis direction and can contact the toe side of the user's foot part. The overlapping portion 39 has a flat plate shape, extends from the rear end of the toe side plate body 38 toward the rear side, and is a portion disposed vertically below the heel side plate member 31. The overlapping portion 39 cannot contact the toe side or the heel side of the user's foot. The heel side of the user's foot and the overlapping portion 39 sandwich the heel side plate member 31 in the yaw axis direction. The overlapping portion 39 is formed with a single shaft insertion hole 40 and a plurality of pin insertion holes 41. The single shaft insertion hole 40 is a through hole that penetrates the overlapping portion 39 in the yaw axis direction, and is disposed vertically below the swinging pitch axis A of the user's ankle. Each of the plurality of pin insertion holes 41 is a through hole that penetrates the overlapping portion 39 in the yaw axis direction, and is formed at a position away from the single shaft insertion hole 40. The plurality of pin insertion holes 41 are formed on the rear side when viewed from the single shaft insertion hole 40. The plurality of pin insertion holes 41 are formed at an equal distance from the single shaft insertion hole 40 and are formed apart from each other.

  The two side wall connecting portions 33 are formed to protrude vertically upward from the left and right side ends of the heel side plate member 31. The two side wall connecting portions 33 are arranged so as to sandwich the heel side of the user's foot portion from side to side. As shown in FIG. 1, the two side wall connecting portions 33 are connected to the two lower leg links 28 via the ankle joint 25. The ankle joint 25 connects the lower leg brace 22 and the leg resting plate member 23 so that the leg resting plate member 23 can swing around the pitch axis with respect to the lower leg brace 22. The ankle joint 25 is configured so that the heel leg 22 and the foot placement plate member are configured such that the heel side plate member 31 and the toe side plate member 32 of the foot placement plate member 23 can swing around the pitch axis with respect to the crus orthosis 22. 23 are connected. On the other hand, the ankle joint 25 prohibits swinging of the heel side plate member 31 of the footrest plate member 23 around the yaw axis with respect to the crus orthosis 22.

  With the above configuration, when the rotating shaft 34 is inserted and attached to the shaft insertion hole 36 of the overlapping portion 39 of the toe side plate member 32 and the shaft insertion hole 36 of the heel side plate member 31 in FIG. Can swing around the rotary shaft 34, that is, around the yaw axis with respect to the heel side plate member 31. In other words, the toe side plate member 32 is configured such that the orientation in the plane intersecting the yaw axis (longitudinal axis) of the lower leg brace 22 can be adjusted. Accordingly, even when the user wears the leg brace 20 and the foot is placed on the foot placing plate member 23, for example, the user places the heel on the heel side plate member 31 while the toe side plate member 32 moves to the toe side. If the direction of the toe side plate member 32 around the yaw axis is adjusted during that time, the direction of the heel side plate member 31 and the foot portion around the yaw axis can be easily removed without removing the leg brace 20. Can be matched.

  If the directions of the heel side plate member 31 and the foot portion around the yaw axis coincide, any of the plurality of pin insertion holes 37 of the heel side plate member 31 and the plurality of pins of the overlapping portion 39 of the toe side plate member 32 The positioning pin 35 is inserted and attached to any one of the insertion holes 41. Thereby, the swing of the toe side plate member 32 around the yaw axis with respect to the heel side plate member 31 is prohibited, and the direction of the toe side plate member 32 is fixed.

  As mentioned above, although preferred embodiment of this invention was described, the said embodiment has the following characteristics.

  That is, the leg brace 20 includes a lower leg brace 22 fixed to the user's lower leg, and a foot placement plate member 23 connected to the lower leg brace 22 for placing the user's foot. The foot placement plate member 23 includes a heel side plate member 31 (first plate member) for placing the heel side of the user's foot and a toe side plate for placing the toe side of the user's foot. Member 32 (second plate member). The heel side plate member 31 is fixed with respect to the crus brace 22 in the plane intersecting the longitudinal axis of the crus brace 22. The toe side plate member 32 is configured such that the orientation in the plane intersecting the longitudinal axis of the crus orthosis 22 can be adjusted. According to the above configuration, even when the user wears the leg brace 20 and the foot is placed on the foot placement plate member 23, for example, while placing the heel on the heel side plate member 31, the toe side plate If the toe side is floated from the member 32 and the direction of the toe side plate member 32 around the yaw axis is adjusted in the meantime, the foot placement plate member 23 and the foot can be easily removed without removing the leg brace 20. The direction around the yaw axis can be matched.

  In the above embodiment, the positioning pin 35 is used to fix the direction of the toe side plate member 32 around the yaw axis. However, instead of this, the direction around the yaw axis of the toe side plate member 32 may be fixed with a bolt, a claw, a key or the like.

20 Leg brace 21 Upper leg brace 22 Lower leg brace 23 Foot placement plate member 24 Knee joint 25 Ankle joint 26 Upper leg brace body 27 Detachable belt 28 Lower leg link 29 Lower leg support part 30 Knee joint motor 31 Saddle side plate member 32 Toe side plate Member 33 Side wall coupling portion 34 Rotating shaft 35 Positioning pin 36 Shaft insertion hole 37 Pin insertion hole 38 Toe side plate body 39 Overlapping portion 40 Shaft insertion hole 41 Pin insertion hole

Claims (1)

A lower leg brace fixed to the user's lower leg;
A foot placement plate member connected to the lower leg brace for placing the user's foot;
A leg brace comprising:
The foot placement plate member is
A first plate member for placing the heel side of the user's foot,
A second plate member for placing the toe side of the foot of the user;
Including
The first plate member has an orientation in a plane intersecting a longitudinal axis of the crus orthosis fixed to the crus orthosis,
The second plate member is configured such that an orientation in a plane intersecting the longitudinal axis of the crus orthosis can be adjusted.
Leg orthosis.

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