CN101143447A

CN101143447A - Cutting knife capable of automatically changing blade

Info

Publication number: CN101143447A
Application number: CNA2007100310120A
Authority: CN
Inventors: 黄元德
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-23
Filing date: 2007-10-23
Publication date: 2008-03-19
Anticipated expiration: 2027-10-23
Also published as: CN100519109C

Abstract

The invention discloses a cutting knife which can automatically change blades and belongs to the cutting tool technology field. The technical scheme is characterized in that the invention consists of a knife handle, a knife bed which is arranged in the knife handle and can slide along the knife handle and a blade which is installed on the knife bed. The blade is installed in a mounting groove, which is installed on the lateral of the knife bed. A locating notch is arranged on the blade. The blade is limited by a knock pin, which is arranged in the locating notch. A blade releasing mechanism, which can toggle the knock pin, is arranged on the knife bed. One lateral of the knife handle is equipped with a cavity, which can accommodate a plurality of spare blades. The plurality of spare blades is overlapped block by block and is arranged in the cavity. The stock blades, which are arranged in the cavity, are corresponding to the position of the blade when the knife bed is hidden in the knife handle. An open cover plate is arranged outside the cavity. An elastic trip is arranged between the outmost stock blade and the cover plate. The cutting knife of the invention has the advantage of convenient use and can be applied to the cutting of paper, cloth, leather, etc.

Description

Automatically change the cutting knife of blade

Technical field

The present invention relates to a kind of cutter, more particularly, it relates to a kind of cutting knife of automatic replacing blade.

Background technology

Traditional cutting knife is divided into fixed, collapsible and telescopic usually, generally is used for cutting paper, cloth, leather etc.; As Chinese patent ZL93208241.6 (Granted publication day: on June 22nd, 1994, Granted publication number: CN2169526Y), disclosed a kind of " the manual cutting knife of step-feeding ", utilize exactly and push the blade that sliding shoe promotes to be hidden in the handle of a knife and stretch out step by step, but it is very inconvenient that it changes blade, and the intensity of cutter is relatively low; And Chinese patent ZL03223149.0 (Granted publication day: on December 24th, 2003, Granted publication number: CN2593982Y) disclose " a kind of combined type cutting knife ", by blade being installed in the groove of tool rest, utilize loam cake and locking plate to cooperate, can change blade comparatively easily, but structure is comparatively complicated, and also needs earlier locking plate to be opened when changing blade, still there is awkward deficiency in rotary upper cover; Chinese patent ZL200420102117.2 (Granted publication day: on February 8th, 2006, Granted publication number: CN2756415Y) disclose " a kind of cutting knife ", be that blade is arranged in the mounting groove of tool rest, and fixed hole position is set on tool rest, by the screw fixed blade in the position, hole, this structure needs tool using when changing blade, have awkward deficiency equally.Applicant of the present invention is at the deficiencies in the prior art, develop a kind of novel cutting tool, and submitted utility application (the application number CN200720051673.5 of " a kind of cutting knife tool rest " to State Intellectual Property Office, the applying date: on May 21st, 2007), by runner being installed at the tool rest upside, can change blade comparatively easily, but change at every turn blade also need with hand with blade from new clothes, yet have awkward deficiency.

Summary of the invention

The technical problem to be solved in the present invention is at the deficiencies in the prior art, and a kind of cutting knife of automatic replacing blade simple in structure, easy to use is provided.

Technical scheme of the present invention is such: a kind of cutting knife of automatic replacing blade, be by handle of a knife, be arranged in the handle of a knife and also can form along handle of a knife tool rest that slides and the blade that is installed on the tool rest, blade is installed in the mounting groove of tool rest side, on blade, be provided with locating notch, blade is limited by the lock pin that is positioned at locating notch, the blade release of stirring lock pin is installed on tool rest, wherein, a described handle of a knife wherein side is provided with the cavity that can hold the polylith spare blade, polylith spare blade block-by-block is stacked to be placed in this cavity, and the spare blade that is placed on this cavity just in time blade position with in tool rest is hidden in handle of a knife the time is corresponding; But be provided with the open type cover plate in the cavity outside, between spare blade of outermost and cover plate, be provided with flexure strip.

In the cutting knife of above-mentioned automatic replacing blade, described blade release is a runner, and lock pin is fixed on the inboard of runner, is provided with breach in the neighboring of runner, and lock pin and breach lay respectively at the central rotating shaft both sides of runner; Be provided with spring leaf in tool rest, a wherein end of spring leaf is fixedlyed connected with tool rest, another free end and breach crimping, and the elastic force of spring leaf is limited in lock pin in the locating notch of blade.

In the cutting knife of above-mentioned automatic replacing blade, described handle of a knife is to be made of front side board and back side panel, be respectively equipped with corresponding chute at two opposed inside faces of forward and backward side plate, on one of them side of tool rest, be provided with the guide protrusions corresponding with chute, be provided with installing hole at the tool rest upside, in one sliding button is arranged on, stretch out outside the handle of a knife outer end of sliding button, two sides at sliding button are provided with the locating convex block corresponding with chute, are provided with retainer spring in the installing hole of sliding button bottom; On chute, be provided with the detent that adapts with sliding button both sides locating convex block, push sliding button and can promote tool rest along the slip of handle of a knife front and back, when locating convex block was positioned at different detents, blade part respectively stretched out the outer and Hide All of handle of a knife in handle of a knife.

In the cutting knife of above-mentioned automatic replacing blade, on one side described cover plate is plugged on the handle, another side is stirred the snap close snapping with the elasticity that is arranged on the handle; The described cover plate outside is provided with elastic hook.

The present invention compared with prior art, has following advantage: by the cavity that can hold the polylith spare blade is set in the handle of a knife side, and position of blade with in tool rest is hidden in handle of a knife time the, the position that makes spare blade is corresponding, after taking off blade, as long as tool rest is return in the handle of a knife, spare blade will enter in the blade installation slot of tool rest automatically in the elastic force effect of flexure strip, realize the automatic replacing of blade, very easy to use.

Description of drawings

Below in conjunction with the embodiment in the accompanying drawing the present invention is described in further detail, but does not constitute any limitation of the invention.

Fig. 1 is one of perspective view of the present invention;

Fig. 2 is two of a perspective view of the present invention;

Fig. 3 is one of structural representation of the present invention;

Fig. 4 is that the A-A of Fig. 3 is to cutaway view;

Fig. 5 is that the B-B of Fig. 3 is to cutaway view;

Fig. 6 is two of a structural representation of the present invention;

Fig. 7 is that the C-C of Fig. 6 is to cutaway view;

Fig. 8 is the front side board structural representation of handle of a knife among the present invention;

Fig. 9 is the back side panel structural representation of handle of a knife among the present invention;

Figure 10 is that the D-D of Fig. 9 is to cutaway view;

Figure 11 is that the E-E of Fig. 9 is to cutaway view;

Figure 12 is the structural representation of tool rest among the present invention;

Figure 13 is that the F-F of Figure 12 is to cutaway view;

Figure 14 is the structural representation of runner among the present invention;

Figure 15 is that the G-G of Figure 14 is to cutaway view;

Figure 16 is the structural representation of sliding button among the present invention;

Figure 17 is that the H-H of Figure 16 is to cutaway view;

Figure 18 is the structural representation of cover plate of the present invention;

Figure 19 is the vertical view of Figure 18.

Among the figure: but handle of a knife 1, cavity la, front side board 1b, back side panel 1c, chute 1d, detent 1e, tool rest 2, mounting groove 2a, guide protrusions 2b, installing hole 2c, sliding button 2d, locating convex block 2e, retainer spring 2f, blade 3, locating notch 3a, spare blade 3 ＇ open type cover plates 4, flexure strip 5, runner 6, lock pin 6a, breach 6b, central rotating shaft 6c, spring leaf 7, elasticity are stirred snap close 8, elastic hook 9.

The specific embodiment

Consult Fig. 1 to shown in Figure 7, the cutting knife of automatic replacing blade of the present invention, be by handle of a knife 1, be arranged in the handle of a knife 1 and also can form along handle of a knife 1 tool rest 2 that slides and the blade 3 that is installed on the tool rest 2, blade 3 is installed in the mounting groove 2a of tool rest 2 sides, on blade 3, be provided with locating notch 3a, blade 3 is limited by the lock pin 6a that is positioned at locating notch 3a, the blade release of stirring lock pin 6a is installed on tool rest 2, handle of a knife 1 wherein a side be provided with can hold polylith spare blade 3 ' cavity 1a, five stacked being placed in this cavity 1a of spare blade 3 ' block-by-block, blade 3 positions in the time of in being placed on the spare blade 3 of this cavity 1a ' just in time and tool rest 2 being hidden in handle of a knife 1 are corresponding; But be provided with open type cover plate 4 in the cavity 1a outside, a spare blade 3 of outermost ' and cover plate 4 between be provided with flexure strip 5, an end freedom of flexure strip 5, the other end is fixedlyed connected with cover plate.

Consult Fig. 4, Figure 14 and shown in Figure 15, blade release is a runner 6, and lock pin 6a is fixed on the inboard of runner 6, is provided with breach 6b in the neighboring of runner 6, and lock pin 6a and breach 6b lay respectively at the central rotating shaft 6c both sides of runner 6; Be provided with spring leaf 7 in tool rest 2, a wherein end of spring leaf 7 is fixedlyed connected with tool rest 2, another free end and breach 6b crimping, and the elastic force of spring leaf 7 is limited in lock pin 6a in the locating notch 3a of blade 3; When blade 3 parts were stretched out handle 1, with the hand runner 6 that rotates backward, the elastic force that can overcome spring leaf 7 can make lock pin 6a break away from the locating notch 3a of blade 3 and discharge blade 3, at this moment blade 3 can be taken off.

Consult Fig. 2, Fig. 4, Fig. 8 to Figure 13, Figure 16 and shown in Figure 17, handle of a knife 1 is to be made of front side board 1b and back side panel 1c, fixing by a plurality of attachment screw combinations, preceding, back side panel 1b, two opposed inside faces of 1c are respectively equipped with corresponding chute 1d, on one of them side of tool rest 2, be provided with the guide protrusions 2b corresponding with chute 1d, be provided with installing hole 2c at tool rest 2 upsides, in one sliding button 2d is arranged on, stretch out outside the handle of a knife 1 outer end of sliding button 2d, be provided with the locating convex block 2e corresponding in two sides of sliding button 2d, in the installing hole 2c of sliding button 2d bottom, be provided with retainer spring 2f with chute 1d; On chute 1d, be provided with the detent 1e that adapts with sliding button 2d both sides locating convex block 2e, pushing sliding button 2d can promote tool rest 2 and slide along handle of a knife 1 front and back, when locating convex block 2e was positioned at different detent 1e, blade 3 part respectively stretched out the outer and Hide All of handle of a knife 1 in handle of a knife 1.

Consult Fig. 2, Figure 18 and shown in Figure 19, Yi Bian cover plate 4 is plugged on the handle 1, another side is stirred snap close 8 snappings with the elasticity that is arranged on the handle 1; Stir elasticity and stir snap close 8, can discharge cover plate 4, be convenient for changing place spare blade 3 ' and blade change face; Be provided with elastic hook 9 in cover plate 4 outsides, can utilize elastic hook that cutter is hung on the belt, to be convenient for carrying.

When the present invention specifically uses, consult Fig. 1, Fig. 2, Fig. 4, shown in Figure 7, press sliding button 2d during use, can tool rest 2 is extrapolated, in the time can not promoting forward, blade 3 parts are stretched out handle 1 outside, at this moment, the locating convex block 2e on sliding button 2d both sides just is positioned at two detent 1e belows of handle 1 front portion, unclamp sliding button 2d, locating convex block 2e enters in the detent 1e under the elastic force effect of spring 2f, tool rest 2 is locked, can utilize blade 3 to cut operation.After being used to complete, press sliding button 2d, make locating convex block 2e break away from two detent 1e of handle 1 front portion, and promote tool rest 2 backward, blade 3 is hidden in the handle 1 fully, at this moment, locating convex block 2e just is positioned at two detent 1e belows at handle 1 rear portion, unclamps sliding button 2d, and locating convex block 2e is under the elastic force effect of spring 2f, enter in the detent 1e, tool rest 2 is locked in the handle 1.Change blade 3 as needs, when blade 3 parts are stretched out handle 1, stir runner 6 backward with finger, the elastic force that overcomes spring leaf 7 can make the locating notch 3a of lock pin 6a disengaging blade 3 and discharge blade 3, just blade 3 can be taken off, press sliding button 2d then, promote tool rest 2 backward, in the time can not promoting, locating convex block 2e just is positioned at two detent 1e below at handle 1 rear portion, and the mounting groove 2a of tool rest 2 sides also just with spare blade 3 ' corresponding, because mounting groove 2a is empty, an interior spare blade 3 ' under the elastic force effect of flexure strip 5, enter automatically in the mounting groove 2a of tool rest 2 sides, blade exchange is finished; Press sliding button 2d again by aforementioned operation, just can be from newly blade being stretched out outside the handle 1.

Claims

1. cutting knife of automatically changing blade, be by handle of a knife (1), be arranged in the handle of a knife (1) and also can form along the tool rest (2) of handle of a knife (1) slip and the blade (3) that is installed on the tool rest (2), blade (3) is installed in the mounting groove (2a) of tool rest (2) side, on blade (3), be provided with locating notch (3a), blade (3) is limited by the lock pin that is positioned at locating notch (3a) (6a), on tool rest (2), the blade release of stirring lock pin (6a) is installed, it is characterized in that, described handle of a knife (a 1) wherein side is provided with the cavity (1a) that can hold polylith spare blade (3 '), polylith spare blade (3 ') block-by-block is stacked to be placed in this cavity (1a), and just in time to be hidden in blade (3) position of handle of a knife (1) when interior corresponding with tool rest (2) for the spare blade (3 ') that is placed on this cavity (1a); At cavity (1a) but the outside is provided with open type cover plate (4), between the spare blade (3 ') of outermost and cover plate (4), be provided with flexure strip (5).

2. the cutting knife of automatic replacing blade according to claim 1, it is characterized in that, described blade release is a runner (6), lock pin (6a) is fixed on the inboard of runner (6), be provided with breach (6b) in the neighboring of runner (6), lock pin (6a) and breach (6b) lay respectively at central rotating shaft (6c) both sides of runner (6); Be provided with spring leaf (7) in tool rest (2), a wherein end of spring leaf (7) is fixedlyed connected with tool rest (2), another free end and breach (6b) crimping, and the elastic force of spring leaf (7) is limited in lock pin (6a) in the locating notch (3a) of blade (3).

3. the cutting knife of automatic replacing blade according to claim 1, it is characterized in that, described handle of a knife (1) is to be made of front side board (1b) and back side panel (1c), preceding, back side panel (1b, 1c) two opposed inside faces are respectively equipped with corresponding chute (1d), on one of them side of tool rest (2), be provided with the guide protrusions (2b) corresponding with chute (1d), be provided with installing hole (2c) at tool rest (2) upside, in one sliding button (2d) is arranged on, stretch out outside the handle of a knife (1) outer end of sliding button (2d), be provided with the locating convex block (2e) corresponding in two sides of sliding button (2d), in the installing hole (2c) of sliding button (2d) bottom, be provided with retainer spring (2f) with chute (1d); On chute (1d), be provided with the detent (1e) that adapts with sliding button (2d) both sides locating convex blocks (2e), push sliding button (2d) and can promote tool rest (2) along the slip of handle of a knife (1) front and back, when locating convex block (2e) was positioned at different detent (1e), blade (3) part respectively stretched out the outer and Hide All of handle of a knife (1) in handle of a knife (1).

4. the cutting knife of automatic replacing blade according to claim 1 is characterized in that, described cover plate (4) is Yi Bian be plugged on the handle (1), and another side is stirred snap close (8) snapping with the elasticity that is arranged on the handle (1).

5. according to the cutting knife of claim 1 or 4 described automatic replacing blades, it is characterized in that described cover plate (4) outside is provided with elastic hook (9).