Seat and working machine with the same

Abstract

A latch body is mounted on the lower portion of a seat platform of a driver seat. An engaging portion is mounted on the upper portion of a seat frame. When an opening on the top of the seat frame is covered by the seat platform, the latch body engages the engaging portion. The seat frame may be opened and closed to enable inspection of an engine through a top opening by pivoting the seat platform. The seat platform does not vibrate relative to the seat frame due to impacts incurred while traveling. And is not moved by the posture of the operator who performs tasks while sitting on the seat platform. The stability of the seat platform is ensured.

1 . A seat comprising: 
 a frame having a space;    a seat platform capable of covering and opening at least part of an upper portion of the frame;    a latch body arranged on one of a lower portion of the seat platform and an upper portion of the frame; and    an engaging portion facing toward the latch body and arranged on the other one of the lower portion of the seat platform and the upper portion of the frame, the engaging portion detatchably engaging the latch body when the seat platform covers at least part of an inner side of the upper portion of the frame.    
   
   
       2 . The seat according to  claim 1 , comprising: 
 a hinge for supporting the seat platform in a manner pivotal toward a back side of the frame about a back side of the seat platform;    wherein the latch body and the engaging portion are arranged at a front side of either the lower portion of the seat platform or the upper portion of the frame.    
   
   
       3 . The seat according to  claim 1 , comprising: 
 a locking mechanism for releasably locking the engagement of the latch body with the engaging portion.    
   
   
       4 . The seat according to  claim 1  comprising: 
 the latch body including an engaging member with an inclined surface tapered and inclined toward a distal side at a side facing towards the engaging portion;    a latch holder for movably holding the latch body; and    a biasing means accommodated in the latch holder for biasing the engaging member in a manner enabling advancement and retraction and in a direction for engaging the engaging portion.    
   
   
       5 . The seat according to  claim 4 , wherein: 
 the latch body has an operating portion for operating the engaging member in a direction releasing the engagement of the engaging member from the engaging portion against the biasing means.    
   
   
       6 . A seat comprising: 
 a frame mounted on a work machine body;    a seat platform supported on the frame for covering at least part of an inner side of an upper portion of the frame; and    a hinge body for supporting the seat platform in a manner pivotal toward a back side of the frame about a back side of the seat platform.    
   
   
       7 . The seat according to  claim 6 , wherein: 
 the frame has an interior space and an opening formed in the upper portion; and    the seat platform is supported on the frame and covering the opening of the frame.    
   
   
       8 . The seat according to  claim 7 , wherein: 
 the space in the frame accommodates an engine.    
   
   
       9 . The seat according to  claim 6 , comprising: 
 a locking mechanism for releasably locking the seat platform in a state pivoted toward the back of the frame.    
   
   
       10 . The seat according to  claim 6 , comprising: 
 a latch body for detachably engaging the seat platform with the frame and holding the upper portion of the frame in a state covered by the seat platform.    
   
   
       11 . A work machine comprising: 
 a work machine body; and the seat according to  claim 1  mounted on the work machine body.    
   
   
       12 . The seat according to  claim 2 , comprising: 
 a locking mechanism for releasably locking the engagement of the latch body with the engaging portion.    
   
   
       13 . The seat according to  claim 2 , comprising: 
 the latch body including an engaging member with an inclined surface tapered and inclined toward a distal side at a side facing towards the engaging portion;    a latch holder for movably holding the latch body; and    a biasing means accommodated in the latch holder for biasing the engaging member in a manner enabling advancement and retraction and in a direction for engaging the engaging portion.    
   
   
       14 . The seat according to  claim 3 , comprising: 
 the latch body including an engaging member with an inclined surface tapered and inclined toward a distal side at a side facing towards the engaging portion;    a latch holder for movably holding the latch body; and    a biasing means accommodated in the latch holder for biasing the engaging member in a manner enabling advancement and retraction and in a direction for engaging the engaging portion.    
   
   
       15 . A work machine comprising: 
 a work machine body; and the seat according to  claim 6  mounted on the work machine body.