Sliding assembly and motion assistance apparatus including the same
A sliding assembly may include a supporting frame having a proximal end and a distal end, a sliding frame partially inserted to the supporting frame, and a supporting member disposed between the supporting frame and the sliding frame to prevent the supporting frame from directly contacting the sliding frame, wherein the sliding frame is configured to move relative to the supporting frame.
1. A sliding assembly of a motion assistance apparatus, the sliding assembly comprising:
a supporting frame including a proximal end and a distal end;
a sliding frame including a connected frame connected to a rotating joint and a sliding bar configured to partially penetrate an accommodating space associated with the supporting frame such that the sliding frame is configured to move relative to the supporting frame; and
a flexible member configured to connect the sliding bar and the supporting frame.
2. The sliding assembly of claim 1 , wherein at least one first roller is connected to the sliding bar, and at least one second roller is connected to an inner side of the supporting frame.
3. The sliding assembly of claim 2 , wherein when the sliding bar is inserted into the accommodating space, the at least one second roller fixed to the supporting frame obstructs the at least one first roller fixed to the sliding bar to prevent separation of the sliding bar from the supporting frame.
4. The sliding assembly of claim 2 , wherein
the at least one first roller includes a pair of first rollers connected to sides of a distal end of the sliding bar, and
the at least one second roller includes a pair of second rollers connected to respective sides of the proximal end of the supporting frame.
5. The sliding assembly of claim 4 , wherein the pair of first rollers is parallel with the pair of second rollers.
6. The sliding assembly of claim 4 , wherein the pair of second rollers is configured to move to adjust a distance between the pair of second rollers based on a shape of the sliding bar.
7. The sliding assembly of claim 2 , wherein
the supporting frame has a sliding groove therein such that a shape of the sliding groove corresponds to the at least one first roller connected to the sliding bar, and
the sliding bar has a roller groove recessed therein inwardly such that a shape of the roller groove corresponds to the at least one second roller connected to the supporting frame.
8. The sliding assembly of claim 7 , wherein the at least one first roller and the at least one second roller are between the sliding groove and the roller groove.
9. The sliding assembly of claim 1 , wherein
the sliding bar includes a first connecting body between an upper face and a lower face of the sliding bar,
the supporting frame includes a second connecting body on a distal end of the supporting frame, and
the flexible member is configured to connect the first connecting body and the second connecting body.
10. The sliding assembly of claim 9 , wherein
the first connecting body is at a center of the sliding bar,
the second connecting body is at a center of the distal end of the supporting frame, and
the flexible member is configured to apply a force parallel with a longitudinal direction of the sliding bar to the supporting frame and the sliding bar.
11. A motion assistance apparatus comprising:
a fixing module including side frames configured to attach to a user;
a driver rotatably fixed to the fixing module; and
a supporting module configured to support a portion of a body of the user, the supporting module including a sliding assembly, the sliding assembly including,
a sliding frame including a sliding bar having at least one first roller connected thereto, and
a supporting frame having at least one second roller connected thereto, the sliding frame configured to penetrate an accommodating space associated with the supporting frame such that the sliding frame moves relative to the supporting frame while the supporting frame does not directly contact the sliding frame.
12. The motion assistance apparatus of claim 11 , wherein when the sliding bar is inserted to the accommodating space, the at least one second roller obstructs the at least one first roller to prevent the sliding bar from separating from the supporting frame.
13. The motion assistance apparatus of claim 12 , further comprising:
a rotating joint between the driver and the sliding assembly, wherein
the sliding frame further includes a connecting frame detachably attachable to the rotating joint.
14. The motion assistance apparatus of claim 13 , wherein the rotating joint comprises:
a passive joint detachably attachable to the driver, the passive joint including a housing and a hinge within the housing.
15. The motion assistance apparatus of claim 14 , wherein the hinge comprises:
a shaft protruding outward from the housing; and
a handle fixed to the shaft, the handle configured to move the shaft.
16. The motion assistance apparatus of claim 15 , wherein the shaft is configured to move along a guide groove associated with the housing when the handle moves.
17. The motion assistance apparatus of claim 15 , wherein the hinge comprises:
a spring inside the hinge, the spring configured to apply a force to the shaft in one of an inward direction and outward direction with respect to the housing.
18. The motion assistance apparatus of claim 17 , wherein
an end of the shaft has a shaft groove therein, and
the sliding frame includes a protrusion configured to contact the shaft groove such that, when the sliding frame rotates, the protrusion forces the shaft to rotate and a tensile force of the spring moves the shaft to an inside of the hinge.