Seat belt device for the vehicle seat

Abstract

An upper-front of a seatback is cut, providing a hole at a position the occupant's shoulder may lie, and an engaging means able to engage with a shoulder webbing is fitted in the hole. The engaging means holds the shoulder webbing, which is wrapped around the occupant. The engaging means is, for example, a (second) buckle fitted in the hole. A second tongue (intermediate tongue) is mounted on a middle part of the shoulder webbing. The shoulder webbing is wrapped slantwise around the occupant's shoulder when the second tongue is engaged with the second buckle.

What is claimed is: 
     
         1 . A seat belt device for vehicle seats, comprising a webbing having a tongue and extending from a webbing feed port made in a pillar, when the tongue is inserted into a buckle provided on one side of a seat cushion, the upper half of the webbing used as a shoulder webbing is wrapped slantwise around the shoulder of the occupant sitting on the vehicle seat, and the lower half of the webbing used as a wrap webbing is wrapped around the hips of the occupant, thereby holding the occupant to the vehicle seat, wherein further comprising:
 a hole provided by cutting the seatback at an upper-front part and located at a position where the shoulder of the occupant lies;   an engaging means fitted in the hole and able to engage with the shoulder webbing; and   the shoulder webbing is engaged with the engaging means and then wrapped slantwise around the shoulder of the occupant.   
     
     
         2 . The seat belt device according to  claim 1 , wherein the engaging means is another buckle arranged in the hole, an intermediate tongue is mounted on the shoulder webbing, and the shoulder webbing is engaged with another buckle and then wrapped slantwise around the shoulder of the occupant. 
     
     
         3 . A seat belt device for vehicle seats, comprising a webbing having a tongue and extending from a webbing feed port made in a pillar, when the tongue is inserted into a buckle provided on one side of a seat cushion, the upper half of the webbing used as a shoulder webbing is wrapped slantwise around the shoulder of the occupant sitting on the vehicle seat, and the lower half of the webbing used as a wrap webbing is wrapped around the hips of the occupant, thereby holding the occupant to the vehicle seat, wherein further comprising:
 a hole provided by cutting the seatback at an upper-front part and located at a position where the shoulder of the occupant lies; and   a striker shaped like a cantilever provided in the hole and having a free end at an inner end, and   the shoulder webbing is bent back, forming a bent part at the intermediated part and is substantially U-shaped, and is wrapped slantwise around the shoulder of the occupant, at the bent part engaged with the striker.   
     
     
         4 . The seat belt device according to  claim 3 , wherein the striker is secured to one side frame of a seatback frame. 
     
     
         5 . The seat belt device according to  claim 3 , wherein a locking means is provided between the seatback and the pillar, has a gate-shaped striker and a latch able to engage with the gate-shaped striker, and holds the seatback at a standing position while the latch remains engaged with the gate-shaped striker;
 the striker shaped like a cantilever is connected to the gate-shaped striker or the latch and has the free end extending along a centerline of the seat.   
     
     
         6 . The seat belt device according to  claim 3 , wherein the striker shaped like a cantilever is bent twice at middle part, forming a stepped part which prevents the shoulder webbing from slipping sideways. 
     
     
         7 . The seat belt device according to  claim 3 , wherein the free end of the striker shaped like a cantilever is bent, preventing the shoulder webbing from slipping sideways. 
     
     
         8 . The seat belt device according to  claim 4 , wherein a locking means is provided between the seatback and the pillar, has a gate-shaped striker and a latch able to engage with the gate-shaped striker, and holds the seatback at a standing position while the latch remains engaged with the gate-shaped striker;
 the striker shaped like a cantilever is connected to the gate-shaped striker or the latch and has the free end extending along a centerline of the seat.   
     
     
         9 . The seat belt device according to  claim 4 , wherein the striker shaped like a cantilever is bent twice at middle part, forming a stepped part which prevents the shoulder webbing from slipping sideways. 
     
     
         10 . The seat belt device according to  claim 4 , wherein the free end of the striker shaped like a cantilever is bent, preventing the shoulder webbing from slipping sideways. 
     
     
         11 . The seat belt device according to  claim 5 , wherein the gate-shaped striker or the latch, provided on the seatback, is connected to one side frame of the seatback frame. 
     
     
         12 . The seat belt device according to  claim 5 , wherein the striker shaped like a cantilever is bent twice at middle part, forming a stepped part which prevents the shoulder webbing from slipping sideways. 
     
     
         13 . The seat belt device according to  claim 5 , wherein the free end of the striker shaped like a cantilever is bent, preventing the shoulder webbing from slipping sideways. 
     
     
         14 . The seat belt device according to  claim 8 , wherein the gate-shaped striker or the latch, provided on the seatback, is connected to one side frame of the seatback frame. 
     
     
         15 . The seat belt device according to  claim 8 , wherein the striker shaped like a cantilever is bent twice at middle part, forming a stepped part which prevents the shoulder webbing from slipping sideways. 
     
     
         16 . The seat belt device according to  claim 8 , wherein the free end of the striker shaped like a cantilever is bent, preventing the shoulder webbing from slipping sideways. 
     
     
         17 . A seat belt device for vehicle seats, comprising a webbing having a tongue and extending from a webbing feed port made in a pillar, when the tongue is inserted into a buckle provided on one side of a seat cushion, the upper half of the webbing as a shoulder webbing is wrapped slantwise around the shoulder of the occupant sitting on the vehicle seat, and the lower half of the webbing as a wrap webbing is wrapped around the hips of the occupant, thereby holding the occupant to the vehicle seat, wherein further comprising:
 a hole provided by cutting through the seatback at an upper-front part and located at a position where the occupant's shoulder lies;   a striker shaped like a cantilever protruding from the pillar, at the back of the hole made in the seatback, and having an inner end as free end; and   the shoulder webbing is bent back, forming a bent part at the intermediated part and is substantially U-shaped, and is wrapped slantwise around the shoulder of the occupant at the bent part guided through the hole and engaged with the striker.   
     
     
         18 . The seat belt device according to  claim 17 , wherein the free end of the striker shaped like
 a cantilever is bent, preventing the shoulder webbing from slipping sideways.   
     
     
         19 . The seat belt device according to  claim 17 , wherein a support is provided on the back of the seatback to support the striker protruding from the pillar when the striker is deformed toward the back of the seatback.