NOVELTY - Fuse unit (1) including fuse component, includes a pair of lock arms (11, 12) provided at first side walls respectively; a pair of engaging parts (13, 14) provided at the lock arms respectively, and each of which having a first inclined face; and a pair of engaged parts (17, 18) provided at the second side walls respectively, and corresponding to the engaging parts respectively, and each of which having a second inclined face to contact the first inclined face in surface contact in a state that the second resin body is bended.    USE - The fuse unit is for directly attaching to a battery installed in an automobile. It is used for supplying electric power of the battery to an electric wire for supplying electric power.    ADVANTAGE - The lock arms are disposed in the side wall parts of both sides of one division body and also the protrusions are disposed in the side wall parts of both sides of the other division body. When the two division bodies are bent, a state in which the first inclined surfaces formed in the lock arms are aligned with the second inclined surfaces disposed in the protrusions is obtained. Thus, the two division bodies are engaged in the side wall parts of both sides, so that a sure lock state is obtained. The first and second inclined surfaces are formed along the direction intersecting with respect to the reaction force by springback of the fuse component based on bending of the division bodies, so that in a state of alignment between the first and second inclined surfaces, these surfaces can surely be subjected to the reaction force by springback. The fuse unit can surely be subjected to a load of springback from the fuse component, so that a bent state of the division bodies can be held, and damage can be prevented. The slide surface parts for sliding in mutual contact are formed in the lock projection and the protrusion, so that the lock projection and the protrusion slide relatively in the case of bending the division bodies. Thus, the first inclined surfaces of the lock projections are smoothly aligned with the second inclined surfaces of the protrusions; and a lock of the bent state can be performed smoothly.    DETAILED DESCRIPTION - Fuse unit (1) including fuse component, comprises a first resin body; a second resin body connected to the first resin body by a hinge portion (3) and bended around the hinge portion with respect to the first resin body; a first opposing wall provided on the first resin body; a second opposing wall provided on the second resin body and opposing the first opposing wall, so that the hinge portion is disposed between the first and second opposing walls; a pair of first side walls provided on the first resin body and extending in a direction intersecting an axis of the bending of the second resin body; a pair of second side walls provided on the second resin body and extending in a direction intersecting the axis of the bending of the second resin body; a pair of lock arms (11, 12) provided at the first side walls respectively; a pair of engaging parts (13, 14) provided at the lock arms respectively, and each of which having a first inclined face; and a pair of engaged parts (17, 18) provided at the second side walls respectively, and corresponding to the engaging parts respectively, and each of which having a second inclined face to contact the first inclined face in surface contact in a state that the second resin body is bended. The first and second inclined faces are formed along a direction intersecting a direction of a reaction force by springback of the fuse component caused by the bending of the second resin body.    DESCRIPTION OF DRAWING(S) - The drawing is a perspective view before bending of fuse unit.    Fuse unit (1)    Hinge portion (3)    Lock arms (11, 12)    Engaging parts (13, 14)    Engaged parts (17, 18)