Linkage unit for forming node of frame structure of building, building assembling set including said linkage unit, and method for assembling building by using said linkage unit

Abstract

Provided is a linkage unit configured to form a node of a frame structure of a building, the linkage unit including: a node member having a plurality of to-be-linked portions having linkage directions which are directions of respective sides of the frame structure; link members configured to be detachably linked to the plurality of respective to-be-linked portions; and a lock mechanism configured to enter states including, as manually switchable states, a locked state where a linkage between any of the to-be-linked portions and the corresponding link member is retained and an unlocked state where the link member is allowed to be detached from the to-be-linked portion. Provided is a building assembling set including the linkage unit. Provided is a method for assembling a building by using the linkage unit.

1 . A linkage unit configured to form a node of a frame structure of a building, the linkage unit comprising:
 a node member having a plurality of to-be-linked portions having linkage directions which are directions of respective sides of the frame structure;   link members configured to be detachably linked to the plurality of respective to-be-linked portions; and   a lock mechanism configured to enter states including, as manually switchable states, a locked state where a linkage between any of the to-be-linked portions and the corresponding link member is retained and an unlocked state where the link member is allowed to be detached from the to-be-linked portion.   
     
     
         2 . The linkage unit according to  claim 1 , wherein
 the lock mechanism has
 a pin portion configured to be rotated about a direction orthogonal to any of the linkage directions and 
 a controller configured to control a rotation angle of the pin portion, 
   switching to the locked state is changing of the rotation angle of the pin portion to a first angle by the controller, and   switching to the unlocked state is changing of the rotation angle of the pin portion to a second angle by the controller.   
     
     
         3 . The linkage unit according to  claim 2 , wherein
 each of the link members includes the lock mechanism, and   the corresponding to-be-linked portion has
 an insertion hole configured to allow the pin portion having the second angle to be inserted thereinto and removed therefrom and 
 a projection configured to engage and fix, inside the insertion hole, the pin portion inserted into the insertion hole, the pin portion having the first angle. 
   
     
     
         4 . The linkage unit according to  claim 3 , wherein the controller is a lever portion configured to be rotated such that: a leading end thereof faces an inner side of the building in the locked state; and the leading end faces an outer side of the building in the unlocked state. 
     
     
         5 . The linkage unit according to  claim 4 , wherein the link member has a first lever stopper configured to restrict movement of the lever portion with the leading end facing the inner side of the building. 
     
     
         6 . The linkage unit according to  claim 4 , wherein the link member has a second lever stopper configured to restrict movement of the lever portion with the leading end facing the outer side of the building. 
     
     
         7 . The linkage unit according to  claim 3 , wherein the controller is a knob portion provided on at least one end out of both ends of the pin portion. 
     
     
         8 . The linkage unit according to  claim 7 , wherein
 the linkage unit has
 a locking indicator as an indicator for a position, of the knob portion, in the locked state and 
 an unlocking indicator as an indicator for a position, of the knob portion, in the unlocked state. 
   
     
     
         9 . The linkage unit according to  claim 3 , wherein
 the link member has a fastening bar hole configured to allow a fastening bar member to pass therethrough, and   the pin portion has a recess configured to allow an end portion of the fastening bar member to be fitted thereinto at the first angle, the fastening bar member having passed through the fastening bar hole.   
     
     
         10 . The linkage unit according to  claim 9 , wherein a relationship between the fastening bar member and the fastening bar hole is equivalent to a relationship between an external thread and an internal thread. 
     
     
         11 . The linkage unit according to  claim 3 , wherein the pin portion has a groove configured to allow avoidance of contact between the pin portion and the projection when the pin portion having the second angle is inserted into or removed from the insertion hole. 
     
     
         12 . The linkage unit according to  claim 3 , wherein
 frames forming the respective sides of the frame structure are rectangular bar frames, and   each of the rectangular bar frames is fixed to the corresponding link member.   
     
     
         13 . The linkage unit according to  claim 3 , wherein
 the link member has
 a retaining member configured to retain a frame forming the corresponding side of the frame structure and 
 a positioning member configured to restrict a position of the frame such that the frame does not come into contact with the pin portion. 
   
     
     
         14 . The linkage unit according to  claim 13 , wherein the retaining member has a frame stopper configured to restrict the position of the frame such that the frame does not come into contact with the pin portion. 
     
     
         15 . The linkage unit according to  claim 14 , wherein
 the positioning member has
 a first positioning end configured to restrict, through contact with the frame, the position of the frame such that the frame does not come into contact with the pin portion and 
 a second positioning end configured to be brought into contact with the node member in a state where the to-be-linked portion and the link member are linked to each other, and 
   the node member has an engagement portion configured to be engaged with the second positioning end of the link member linked to the to-be-linked portion.   
     
     
         16 . The linkage unit according to  claim 1 , wherein
 the node member has
 shoulder members having the respective to-be-linked portions and 
 a trunk member configured to allow the to-be-linked portions to be fitted thereto. 
   
     
     
         17 . A building assembling set comprising the linkage unit according to  claim 1 , the building assembling set comprising:
 a plurality of linkage frames each including
 a frame forming a side of the frame structure and 
 the corresponding link members fixed to both respective ends of the frame; and 
   the node member.   
     
     
         18 . The building assembling set according to  claim 17 , wherein the plurality of linkage frames have lengths equal to one another. 
     
     
         19 . A method for assembling a building by using the linkage unit according to  claim 1 , the method comprising:
 a step of linking, to the plurality of to-be-linked portions of the node member, the respective link members provided to frames forming the respective sides of the frame structure of the building; and   a step of switching, to the locked state, a state of the lock mechanism corresponding to each of the linked link members.