| 摘要 |
A digging tooth mounting body (15) is provided with an adaptor (20), a digging tooth (30), and a retainer assembly (40). The adaptor (20) has: a first recess (2 1T i) which is formed in the front face (2 1S i) thereof which faces the digging tooth (30); and an insertion section (22) which protrudes from the front face (21S i). The digging tooth (30) has: a first protrusion (31Ti) which is formed on the back face ( 1Ss) thereof which faces the front face (21 Si) of the adaptor (20); an insertion hole (32) into which the insertion section (22) is inserted; and first and second shaft holes (36, 37) through which the retainer assembly (40) is inserted. The first protrusion ( 1Ti) is inserted into the first recess (21Ti). The back face ( 3 1S 5) has a rectangular outer edge which consists of a pair of long sides and a pair of short sides. The first and second shaft holes (36, 37) are formed along the pair of long sides. The out er peripheral surface (Ql) of the first protrusion ( 1Ti) is separated from the inner bottom surface (Rl) and the inner side surfaces (R2) of the recess. |
