The present invention relates to a combine knife structure and, more specifically, to a combine knife structure, which comprises a middle cutting member between an upper cutting member and a lower cutting member and allows the middle cutting member to cut grain including rice and the like at two points while reciprocating. The combine knife structure includes: an upper cutting member (10) which has one side with a plurality of upper cutting blades (15) longitudinally coupled thereto toward the front a lower cutting member (20) which is provided in a lower part of the upper cutting member (10), and to which a plurality of lower cutting blades (25) are coupled at a position corresponding to the upper cutting blade (15) a middle cutting member (30) which is arranged between the upper cutting member (10) and the lower cutting member (20) to reciprocate horizontally, and which includes middle cutting blades formed to be in close contact with the upper cutting blades (15) and the lower cutting blades (25), respectively, to cut two points of rice and a cutting member fixing unit (40) which is arranged on an upper part of the upper cutting member (10) to couple only the upper cutting member (10) and the lower cutting member (20), and which causes the upper cutting blades (15), the middle cutting blades, and the lower cutting blades (25) to be in close contact with one another.COPYRIGHT KIPO 2014본 발명은 콤바인용 예취날 구조체에 관한 것으로, 더욱 상세하게는 상부예취대와 하부예취대의 사이에 중간예취부를 구비하여 그 중간예취부가 왕복이동하면서 벼 등의 곡류를 두 지점에서 베어지도록 한 콤바인용 예취날 구조체에 관한 것이다.본 발명의 구성은, 일측에 전방을 향해 복수개의 상부예취날(15)이 길이방향을 따라 결합된 상부예취대(10) 상기 상부예취대(10)의 하부에 구비되고, 상기 상부예취날(15)에 대응되는 위치에 복수개의 하부예취날(25)이 결합된 하부예취대(20) 상기 상부예취대(10)와 하부예취대(20)의 사이에 좌우측방향으로 왕복이동하도록 설치되고, 벼의 두 지점을 베도록 상부예취날(15)과 하부예취날(25)에 각각 밀착되게 중간예취날이 형성된 중간예취부(30) 상기 상부예취대(10)의 상부에 상부예취대(10)와 하부예취대(20)만을 서로 결합하도록 설치되고, 상기 상부예취날(15)과 중간예취날 및 하부예취날(25)이 서로 밀착되게 하는 예취대고정부(40)를 포함하여 이루어진 것을 특징으로 한다.
