CN201092049Y

CN201092049Y - Cutter having blade lock

Info

Publication number: CN201092049Y
Application number: CNU2007200557326U
Authority: CN
Inventors: 蒋明基
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-17
Filing date: 2007-08-17
Publication date: 2008-07-30
Anticipated expiration: 2017-08-17

Abstract

The utility model discloses a cutter with a blade lock, which comprises a tool shank, a cutter body which is pivotally connected on the tool shank, and a blade and a blade block which are arranged on the cutter body; the front end of the cutter body is provided with a narrow trough where the blade is arranged; the back of the cutter body is provided with a narrow trough where the blade lock is arranged; the two narrow troughs are communicated with each other in the cutter body to form a cavity; the blade is provided with a notch; the front end of the blade block is provided with a hook and a handle used for releasing the lock; the blade lock is pivoted and arranged in the narrow trough; furthermore, in the normal state, the hook is clamped on the notch. By arranging the handle at the front end of the blade lock of the cutter with a blade lock, when the blade is required to be replaced, the handle of the blade lock is lifted upwards, thus leading the hook of the blade lock to be disconnected from the notch of the blade so as to release the lock. As the handle of the blade lock is arranged at the front end, the blade lock can be opened only by lifting the handle upwards, the blade lock is not opened accidentally owing to the collision of the external force and the blade is not dropped out of the blade trough, thus ensuring the safety of the user and being convenient for replacing the blades.

Description

A kind of cutter that has the blade lock

Technical field

The utility model relates to the five metals cutter that uses in a kind of daily life, particularly a kind of cutter that has the blade lock, is convenient for changing blade.

Technical background

The existing cutter of amounting to generally is to realize by a slice blade of amounting to the handle of a knife that can pivot is installed on handle of a knife.Its blade one-time fixes and is connected on the handle of a knife, and after use a period of time, because wearing and tearing of the cutting edge of blade or destruction, whole cutter just can not re-use.In addition, also have the cutter of some band blade locking devices, all, the situation that blade locking device accident is opened occurs because various reasons in structure make that the location of blade is unreliable.As cutter commonly used at present, its blade and handle of a knife are to flexibly connect, and blade can be retracted in the handle of a knife by translation.After the cutting edge wearing and tearing or destruction of blade, open its blade locking device, replaceable new blade, but the location of the blade of this structure on handle of a knife is unreliable, in use returns easily in the handle of a knife, brings certain potential safety hazard to the user; And the locking device structure complexity of its replacing blade, make troubles for actual the use.In addition, also have a kind of push type to remove blade locking cutter, therefore the tripper of this cutter also exists unexpected situation about opening owing to can be subjected to the collision of external force.

Summary of the invention

The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of blade of can realizing changing easily is provided, and guarantees the connection reliability of blade again, and can prevent the unexpected cutter of opening that has the blade lock of blade lock.

The technical scheme that the utility model has the cutter of blade lock is: a kind of cutter that has the blade lock, comprise handle of a knife, be articulated in the blade on the handle of a knife, and the blade and the blade that are arranged on the blade are locked, the front end of described blade is provided with the slit of installing blade, the back of blade is provided with the slit of installing blade lock, these two slits formation cavity that is interconnected in blade inside; Described blade is provided with bayonet socket, and the front end of blade lock is provided with the handle of trip and release, and blade lock hinge is contained in the slit, and under normal conditions, described trip fastening is on bayonet socket.

The middle part of described blade lock is provided with through hole, and position corresponding with this through hole on the described blade is provided with bearing pin, and the blade lock is contained on the blade by this bearing pin hinge.

Described handle is for locking the tabs that one is made with blade.

Be provided with the elastomeric element of the usefulness that resets in the cavity of described blade, an end of this elastomeric element contacts with blade lock end.

Described elastomeric element is a torsionspring, and this torsionspring is sleeved on the set handle of a knife axle of blade, and two free arms of torsionspring overhead are respectively locked terminal bottom surface at the sidewall and the blade of the set cavity of blade.

The bore periphery that is used to install the handle of a knife axle on the described blade is provided with the convex edge of suit torsionspring.

As further improvement of the utility model, be connected with on the bearing pin of described blade and be convenient to handle that blade is opened in the handle of a knife.

Further improve as the utility model, the front end of described blade is provided with the blade cover that entangles the blade exposed parts.

In sum, the beneficial effects of the utility model are, by front end and back at blade the slit that is interconnected are set, and make the blade lock can fasten mutually with blade.Simultaneously, the front end of blade lock is provided with handle, blade lock rear end overhead is on torsionspring, when needs are changed blade, upwards griffe the handle of mortice lock, the trip of blade lock and the bayonet socket on the blade are broken away from mutually, the rear end compressing torsionspring of blade lock, after changing blade, blade is locked under the effect of torsionspring and automatically resets, and the state that locks mutually of maintenance and blade.Because the handle of blade lock is arranged on front end, have only by the handle that makes progress and just can open the blade lock, therefore can accident not open the blade lock because of the collision of external force, make blade drop out insert groove, thereby ensure user's safety; After the cutting edge wearing and tearing or destruction of blade, the blade that can more renew quickly and easily and the blade of different cutting edges.In addition, the utility model cutter is provided with handle on blade, is convenient to draw in or open cutter; Exposed parts at blade is provided with the blade cover in addition, further strengthens the security that cutter uses.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is further described:

Fig. 1 has the cutter front view of blade lock for the utility model;

Fig. 2 removes the vertical view of blade cover for Fig. 1;

Fig. 3 is the cutaway view of Fig. 2;

Fig. 4 is the cutaway view of blade among Fig. 2;

Fig. 5 is the front view of blade lock among Fig. 2.

The specific embodiment

Have the cutter of blade lock as accompanying drawing 1 to the utility model shown in the accompanying drawing 5, comprise handle of a knife 1, be articulated in blade 2 on the handle of a knife 1 by handle of a knife axle 13, blade 2 front ends are provided with the slit 5 that blade 3 is installed, and the back is provided with the slit 7 that is used to install blade lock 4.The slit 5 of front end and the slit 7 at the back formation cavity that is interconnected.The back of blade 3 is provided with a bayonet socket 31 to two U-shapeds.The front end of blade lock 4 is provided with trip 41, and blade is locked 4 front ends and trip 41 relative positions and is provided with handle 42, and the middle part that blade is locked is provided with through hole 43, and wherein handle 42 is for to lock the tabs that 4 one are made with blade.The bayonet socket 31 at the geomery of trip 41 and blade 3 backs is suitable, but trip 41 fastenings are in bayonet socket 31.

Be provided with a through hole 21 on blade 2, the through hole of locking on 4 with blade 43 is corresponding, by bearing pin 8 (adopting screw in the present embodiment), blade lock 4 and blade 2 is flexibly connected.At through hole 22 places that blade 2 is connected with handle of a knife axle 13, be provided with the complete or convex edge 23 partly of a circle, be used to lay a torsionspring 6, torsionspring 6 one end overheads are on the sidewall 24 of blade 2 cavitys, and other end overhead is at the end 44 of blade lock 4.

When changing blade 3, the handle 42 of mentioning blade lock 4, the trip 41 of blade lock 4 breaks away from the bayonet socket of blade 3 31, take out old blade 3, after the slit 5 that new blade 3 is passed blade 2 front ends is placed to the end, release handle 42, just under the effect of torsionspring 6, fastening is in the bayonet socket 31 at blade 3 backs automatically for the trip 41 of blade lock 4.The blade lock 4 of this pull-up structure, convenient and simple, with the phase-locked ratio of the blade of push type structure, can prevent unexpected release under the external force collision situation, cause that blade 3 accidents drop out, also strengthened simultaneously the practicality and the convenience of this cutter changing blade 3 greatly, after the cutting edge wearing and tearing or destruction of blade 3, the blade 3 that can more renew easily and the blade 3 of different cutting edges.

In addition, be connected with handle 9 on also, be used to stir blade 2 and rotate, blade 2 is opened in handle of a knife 1 around handle of a knife axle 13 at the bearing pin 8 that connects blade 2 and blade lock 4.In the present embodiment, bearing pin 8 usefulness screws replace, and handle 9 is the outside nut that has annular knurl.

Because blade 3 is very sharp, for prevent blade 3 open and the withdrawal process in the user is caused unexpected injury, therefore the front end at blade 3 is connected with the blade cover 12 that entangles blade 3 exposed parts.The profile of this blade cover 12 is consistent with blade 3 exposed parts, makes with plastic material, be provided with in its side one with the suitable slit of blade 3 thickness, be used for directly entangling blade 3, and can be retracted in the handle of a knife 1 with blade 2 one.

Handle of a knife 1 by about two handle of a knife sheets 11 be formed by connecting by 3 pins 10, on wherein a slice handle of a knife sheet 11 of handle of a knife 1, be fixed with a shell fragment 14, when blade 2 opens and uses, the front end of shell fragment 14 just overhead at the position on the lower side of blade 2 terminal surfaces, prevent blade 2 in use accident turn back.And the position on the upper side that one of them bearing pin 10 that relies on two handle of a knife sheets 11 of joint withstands blade 2 terminal surfaces prevents the blade counter-rotating.Push to handle of a knife sheet 11 inboards and to stir shell fragment 14, just can remove its qualification, blade 2 is regained in the handle of a knife 1 together with blade 3 and blade cover 12 blade 2.

Claims

1. one kind has the cutter that blade is locked, comprise handle of a knife (1), be articulated in the blade (2) on the handle of a knife (1), and the blade (3) and the blade that are arranged on the blade (2) are locked (4), it is characterized in that: the front end of described blade (2) is provided with the slit (5) of installing blade (3), the back of blade (2) is provided with the slit (7) of installing blade lock (4), these two slits (5,7) formation cavity that is interconnected in blade (2) inside; Described blade (3) is provided with bayonet socket (31), and the front end of blade lock (4) is provided with the handle (42) of trip (41) and release, and blade lock (4) hinge is contained in the slit (7), and under normal conditions, described trip (41) fastening is on bayonet socket (31).

2. the cutter that has the blade lock according to claim 1, it is characterized in that: the middle part of described blade lock (4) is provided with through hole (43), described blade (2) is gone up the position corresponding with this through hole (43) and is provided with bearing pin (8), and blade lock (4) is contained on the blade (2) by this bearing pin (8) hinge.

3. the cutter that has the blade lock according to claim 2 is characterized in that: described handle (42) is for locking the tabs that (4) one is made with blade.

4. the cutter that has the blade lock according to claim 2 is characterized in that: be provided with the elastomeric element (6) of the usefulness that resets in the cavity of described blade (2), an end of this elastomeric element (6) contacts with blade lock terminal (44).

5. the cutter that has the blade lock according to claim 4, it is characterized in that: described elastomeric element (6) is a torsionspring, this torsionspring is sleeved on the set handle of a knife axle (13) of blade (2), and two free arms of torsionspring difference overhead is in the bottom surface of the sidewall (24) and the blade lock terminal (44) of the set cavity of blade (2).

6. the cutter that has the blade lock according to claim 5, it is characterized in that: through hole (22) periphery that is used to install handle of a knife axle (13) on the described blade (2) is provided with the convex edge (23) of suit torsionspring (6).

7. according to each described cutter that has blade lock of claim 2 to 6, it is characterized in that: be connected with on the bearing pin (8) of described blade (2) and be convenient to handle (9) that blade (2) is opened in the handle of a knife (1).

8. according to each described cutter that has the blade lock of claim 2 to 6, it is characterized in that: the front end of described blade (3) is provided with the blade cover (12) that entangles blade (3) exposed parts.