A kind of screwdriverTechnical field:
The utility model relates to hardware & tools, particularly a kind of screwdriver.
Background technology:
Installation, knockout screw in narrow or darker hole, groove, screw is wanted from narrow or darker hole, groove, to take out, and very trouble is used the comparatively inconvenience of normal screws cutter, also needs other aid or facility; Though the screwdriver of carrying magnetic head is arranged now, in use, the fixedly shakiness of screw on the magnetic head is difficult for screw is installed in narrow or darker hole, groove, dismantled, and can not satisfy the needs of use.
Summary of the invention:
The purpose of the utility model is that design is a kind of easy to use, is suitable for the screwdriver of installation, knockout screw in narrow or darker hole, groove.
The technical scheme of the utility model is, a kind of screwdriver, and it comprises knife bar, it is characterized in that: the both sides at knife bar are provided with Elastic clamping plate, and the length of said Elastic clamping plate slightly is longer than the length of knife bar, is provided with boss in the bottom of Elastic clamping plate.Said boss is a wedge shape.Said Elastic clamping plate is processed for the rubber-like material.
The utility model is simple in structure, and is easy to use, easily installation, knockout screw in narrow or darker hole, groove.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
The specific embodiment:
Describe embodiment in detail in conjunction with accompanying drawing, a kind of screwdriver, it comprises knife bar 1; Be provided with Elastic clamping plate 2 in the both sides of knife bar, the length of said Elastic clamping plate slightly is longer than the length of knife bar, is provided with boss 3 in the bottom of Elastic clamping plate; The side of boss is provided with circular arc, and the described boss of present embodiment is a wedge shape, and the boss upper surface has certain gradient downwards; The boss lower surface upwards has certain gradient, and said Elastic clamping plate is processed for having certain flexible material.The utility model is clamped screw 4 with Elastic clamping plate earlier in use, needs the position of installing with the screwdriver rod insertion; Screw is screwed in screw, and when being screwed into when last, head of screw can outwards be pushed Elastic clamping plate open along the inclined-plane on the boss; Thereby can be with screw-driving, when knockout screw, Elastic clamping plate can block head of screw earlier; After using screwdriver to unscrew screw, the boss upper surface of Elastic clamping plate can be clamped head of screw, guarantees that head of screw is difficult for dropping.The utility model is simple in structure, and is easy to use, improved the efficiency of construction of installation, knockout screw in narrow or darker hole, groove.