CN101200071A - Cutter - Google Patents

Abstract

The invention provides a cutting knife, which comprises a shank composed of an upper shank and a lower shank, a holder arranged movably between the upper and the lower shanks and a blade arranged on the holder. The holder can drive the blade sliding between the upper and the lower shanks so as to extend or withdraw the blade; a movable cover is connected on the upper shank; a blade storage groove for storing the blades, in which a plurality of blades can be arranged, is arranged in the upper shank; the bottom of the cover is provided with a spring sheet which is pressed in butt on the blade in the blade storage groove; the holder is arranged under the stored blades. When no blade is on the holder, the stored blade can be installed automatically on the holder under the effect of the spring sheet of the cover. The invention has the advantages of simple structure, automatic change of the blade and convenient usage.

Description

Cutter

technical field

The invention relates to a tool, in particular to a cutting knife.

Background technique

Traditional cutting knives are usually divided into fixed type, folding type and telescopic type, and are generally used to cut paper, cloth, leather, etc.; as disclosed in Chinese patent CN93208241. The blade hidden in the knife handle is pushed out step by step by pressing the sliding block, but it is inconvenient to replace the blade; and Chinese patent CN03223149.0 discloses "a combined cutting knife", by installing the blade on the knife seat In the groove, the upper cover and the locking piece can be used to replace the blade more conveniently, but the structure is relatively complicated, and the locking piece needs to be opened before changing the blade, which also has the problem of inconvenient use.

Contents of the invention

The object of the present invention is to provide a cutting knife with a novel structure.

In order to achieve the above object, the present invention adopts the following technical solutions: a cutting knife, including a knife handle composed of an upper knife handle and a lower knife handle, a knife seat movably arranged between the upper and lower knife handles, and a knife seat installed on the knife handle. The blade on the seat, the knife seat can drive the blade to slide between the upper and lower handles to extend or retract the blade. A movable knife cover is connected to the upper handle. It is characterized in that there is a A knife storage slot for storing blades, and multiple blades can be stored in the knife storage slot; a spring piece is provided at the bottom of the knife cover, and the spring piece presses against the blade in the knife storage slot; the knife seat is set Below the storage blade, when there is no blade on the knife seat, the storage blade can be automatically installed on the knife seat under the effect of the knife cover spring.

It also includes a spring, a cover opening key and a pressure plate; the rear end of the upper knife handle is provided with a spring groove, and a step suitable for sliding the cover opening key is provided above the spring groove; the spring is arranged in the spring groove; the cover opening key Embedded on the step, its upper end is worn on the pressure plate, and the lower end extends into the spring groove and leans against the front end of the spring; the pressure plate is connected to the upper knife handle and sealed above the spring groove; the knife cover There is a block at the front and rear ends, which is used to connect with the upper knife handle. By pushing the cover opening key, the front end of the cover opening key can be inserted into or withdrawn from the top of the rear end block of the knife cover to control the opening and closing of the knife cover. .

The cover opening key is composed of an upper push plate, a middle key plate and a lower spring baffle that are connected together. The push plate is L-shaped and has a rough upper surface for easy pushing by hand. The key plate is arranged horizontally in the middle for Inserted above the rear end clamping block of the knife cover, the spring baffle is arranged perpendicular to the key plate below the key plate for extending into the spring groove and leaning against the front end of the spring.

A square hole is arranged in the middle of the pressing plate, and the upper push plate of the cover opening key is embedded in the square hole and can move back and forth along the square hole.

Five blades can be stored in the knife storage groove of the upper knife handle.

The cutting knife of the present invention has the advantages of simple structure, automatic replacement of blades, convenient use and the like.

Description of drawings

Fig. 1 is a top view structural representation of the present invention;

Fig. 2 is a side view structural representation of the present invention;

Fig. 3 is a schematic diagram of an exploded structure of the present invention;

Fig. 4 is the structural representation of knife cover among the present invention;

Fig. 5 is a schematic structural view of the cover opening key in the present invention;

Fig. 6 is a structural schematic diagram of the pressing plate in the present invention.

Detailed ways

Referring to Fig. 1 Fig. 2, Fig. 3, cutting knife of the present invention comprises upper handle of a knife 1, lower handle of a knife 2, knife seat 3, blade 4, knife cover 5, spring 6, uncap key 7 and pressing plate 8. The upper handle 1 and the lower handle 2 are combined into a whole handle, the knife seat 3 is movable between the upper and lower handles, the blade 4 is installed on the knife seat 3, and the knife seat 3 can drive the blade 4 on the upper and lower handles Swipe between to extend or retract the blade.

Referring to FIG. 3 , the upper handle 1 is provided with a knife storage slot 11 for storing the blade 4 , and 5 blades can be stored in the knife storage slot 11 . A spring groove 12 is also provided at the rear end of the upper knife handle 1, and a step 13 suitable for sliding the cover-opening key is provided above the spring groove 12.

Knife seat 3 is arranged on the below of storage blade, and when there is no blade on the knife seat, the knife seat is pulled back to the retracting knife position, and storage blade can be installed on the knife seat automatically under the effect of knife cover spring leaf 51.

Referring to Fig. 4 for cooperation, the knife cover 5 is movably connected on the upper knife handle 1. A spring leaf 51 is arranged at the bottom of the knife cover 5 , and the spring leaf 51 presses against the blade in the knife storage groove 11 . The front and rear ends of the knife cover 5 are respectively provided with a block 52, 53 for being movably connected with the upper knife handle 1, and the front end of the middle key plate 72 of the cover opening key is inserted into or withdrawn from the rear end by pushing the cover opening key 7 The top of the block 53 can control the opening and closing of the knife cover.

The spring 6 is arranged in the spring groove 12 of the upper handle 1 .

Referring to Fig. 5, the cover opening key 7 is composed of an upper push plate 71, a middle key plate 72 and a lower end spring baffle 73 which are connected together. Push plate 71 is L-shaped and is provided with rough upper surface to be convenient to push by hand, key plate 72 is horizontally arranged in the middle and is used to insert the top of the rear end block 53 of knife cover, and spring baffle plate 73 is perpendicular to key plate 72 and is arranged on The bottom of the key board is used to extend into the spring groove 12 and lean against the front end of the spring 6 . The cover opening key 7 is embedded on the step 13 of the upper knife handle 1 through its middle key plate 72 , and its upper end push plate 71 is sheathed in the square hole 81 of the pressure plate 8 .

Referring to FIG. 6 , the pressing plate 8 is connected to the upper handle 1 and covers the top of the spring groove 12 . A square hole 81 is arranged in the middle of the pressing plate 8, and the upper end push plate 71 of the cover opening key is embedded in the square hole and can move back and forth along the square hole.

Claims (5)

1. cutting knife, comprise the handle of a knife that combines by last handle of a knife and following handle of a knife, be movably arranged on the tool rest between the handle of a knife up and down and be installed in blade on the tool rest, tool rest can drive blade and blade is stretched out or take in sliding between the handle of a knife up and down, on last handle of a knife, be connected with the movable blade lid, it is characterized in that: described going up in the handle of a knife is provided with a storage cutter groove that is used to store blade, can deposit many blade in the storage cutter groove; Described cutter lid bottom is provided with spring leaf, and this spring leaf is pressed on the interior blade of storage cutter groove; Described tool rest is arranged on the below that stores blade, and during no blade, the storage blade can be installed on the tool rest under the effect of cutter lid spring sheet automatically on tool rest.

2. cutting knife as claimed in claim 1 is characterized in that: also comprise spring, uncap key and pressing plate; Described rear end of going up handle of a knife is provided with a spring groove, and the spring groove top is provided with the step that the key that is suitable for uncapping slides; Spring is arranged in the spring groove; The key of uncapping is inlaid on the step, and its upper end is set on the pressing plate, and the lower end is stretched in the spring groove and is resisted against the front end of spring; Pressing plate is connected on the handle of a knife and is sealed on the top of spring groove; The rear and front end of described cutter lid respectively is provided with one and is used for the fixture block that is movably connected with last handle of a knife, and the opening and closing of cutter lid can be controlled in the top that makes the front end of the key of uncapping insert or withdraw from the rear end fixture block of cutter lid by the key that promotes to uncap.

3. cutting knife as claimed in claim 2, it is characterized in that: the described key of uncapping is made of the upper end push pedal that fuses, middle key plate and lower end spring stop, push pedal becomes L shaped and is provided with the convenient hand propelled of using of coarse upper surface, the key plate is used to insert the fixture block top, rear end of cutter lid in the middle of being horizontally installed on, and the below that spring stop is arranged on the key plate perpendicular to the key plate is used to stretch in the spring groove and is resisted against the front end of spring.

4. cutting knife as claimed in claim 2 is characterized in that: be provided with a square hole in the middle of the described pressing plate, the upper end push pedal of the key of uncapping is inlaid in this square hole and can moves forward and backward along this square hole.

5. cutting knife as claimed in claim 1 is characterized in that: can store five blades in the storage cutter groove of described upward handle of a knife.

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