Vehicle framework structure

Abstract

The present disclosure presents a A vehicle framework structure, which structure comprises: a front frame member that configures forms a part of a vehicle framework of at a vehicle front section of a vehicle; a rear frame member that configures forms a part of a the framework of at a vehicle rear section of the vehicle; an intermediate frame member that configures forms a part of a the framework of at a vehicle intermediate section of the vehicle, and that includes a framework member the intermediate frame member is disposed between the front frame member and the rear frame member, and having has a length direction in a vehicle front-rear direction; and a coupling section that includes a first configuration coupling member attached to the framework member of the intermediate frame member so as to be continuous with the framework member extend in the vehicle front-rear direction, and a second configuration coupling member attached to the first configuration coupling member so as to be continuous with the first configuration member extend in the vehicle front-rear direction.

What is claimed is: 
     
       1. A vehicle framework structure, comprising:
 a front frame member that configures forms a part of a vehicle framework of at a vehicle front section of a vehicle; 
 a rear frame member that configures forms a part of a the vehicle framework of at a vehicle rear section of the vehicle; 
 an intermediate frame member that configures forms a part of a the vehicle framework of at a vehicle intermediate section of the vehicle, and that includes a framework member is disposed between the front frame member and the rear frame member and having has a length direction in a vehicle front-rear direction; and 
 a coupling section that includes a first configuration coupling member attached to the framework member of the intermediate frame member so as to be continuous with the framework member extend in the vehicle front-rear direction, the first configuration coupling member having a leading larger end portion and a base end portion, and a second configuration coupling member attached to the first configuration coupling member so as to be continuous with the first configuration member extend in the vehicle front-rear direction, the second configuration coupling member having a leading larger end portion and a base end portion, the coupling section coupling at least one of the front frame or member and the rear frame member to the intermediate frame member in the vehicle front-rear direction by joining the leading larger end portion of the first configuration coupling member to the leading larger end portion of the second configuration coupling member opposing the leading larger end portion of the first configuration coupling member, with both the first configuration coupling member and the second configuration coupling member being formed so as to gradually increase in size in at least one of a vehicle width direction or and a vehicle vertical direction on progression from the respective base end portions of the first configuration coupling member and the second configuration coupling member toward the respective leading larger end portions of the first configuration coupling member and the second configuration coupling member, 
 wherein the first coupling section member is formed with at least one of a hollow portion or an opening and the second coupling member is formed with a through-hole that is joined to the hollow portion due to the second coupling member being attached to the first coupling member, and 
 wherein a portion of a suspension arm is inserted into the at least one of the hollow portion or and the opening through-hole are configured to receive a portion of a suspension arm. 
 
     
     
       2. The vehicle framework structure of  claim 1 , wherein the vehicle intermediate frame section includes:
 a pair of left and right rockers that constitute the framework member; and 
 a cross member coupling coupled between the pair of left and right rockers together in the vehicle width direction, one of the pair of left and right rockers constituting the intermediate frame member and being coupled to the cross member via the first configuration coupling member of the coupling section. 
 
     
     
       3. The vehicle framework structure of  claim 2 , wherein a portion of the first configuration coupling member of the coupling section that is joined to the one of the pair of left and right rockers, and a portion of the first configuration coupling member of the coupling section that is joined to the cross member, are configured as a single body. 
     
     
       4. The vehicle framework structure of  claim 1 , wherein, in the coupling section, at least one ridge line, of a plurality of ridge lines extending along the vehicle front-rear direction in the vicinity of the leading end portion of the first configuration member, is disposed so as to be continuous with at least one ridge line of a plurality of ridge lines extending along the vehicle front-rear direction in the vicinity of the leading end portion of the second configuration member. 
     
     
       5. The vehicle framework structure of  claim 1 , wherein, in a vehicle front view of the coupling section, at least one ridge line, of a plurality of ridge lines within a face of the leading end portion of the first configuration member that is a face opposing the second configuration member, is disposed so as to be substantially superimposed on at least one ridge line of a plurality of ridge lines within a face of the leading end portion of the second configuration member that is a face opposing the first configuration member. 
     
     
       6. The vehicle framework structure of  claim 1 , wherein the first configuration coupling member and the second configuration coupling member of the coupling section are each formed with a rib extending along the vehicle front-rear direction, and the rib of the first configuration coupling member and the rib of the second configuration coupling member are disposed so as to be substantially superimposed on each other in a vehicle front view. 
     
     
       7. The vehicle framework structure of  claim 1 , wherein at least one of the first configuration coupling member or and the second configuration coupling member of the coupling section is provided with a projection that projects toward the other of the first configuration coupling member or and the second configuration coupling member, and that overlaps the other of the first configuration coupling member or and the second configuration coupling member in the vehicle width direction. 
     
     
       8. The vehicle framework structure of  claim 1 , wherein a fitting portion is formed at on one of the first configuration coupling member or and the second configuration coupling member of the coupling section, and either the hollow portion or the through-hole serves as a fitted-to portion is formed at on the other of the first configuration coupling member or and the second configuration coupling member, with the fitting portion being fitted to the fitted-to portion by being inserted into the fitted-to portion of the vehicle front-rear direction. 
     
     
       9. The vehicle framework structure of  claim 1 , wherein the second configuration member of the coupling section is formed as a single body with at least one of the front frame or the rear frame. 
     
     
       10. The vehicle framework structure of  claim 1 , wherein at least one ridge line of a plurality of ridge lines provided at the coupling section is configured so as to be continuous with at least one ridge line of a plurality of ridge lines provided at either the front frame or the rear frame. 
     
     
       11. The vehicle framework structure of  claim 1 , wherein the first configuration coupling member and the second configuration coupling member of the coupling section are fastened together using a fastener.