CN219748063U - Knife rest structure capable of rapidly retracting and extending blade from knife handle - Google Patents

Abstract

The utility model discloses a knife rest structure capable of rapidly retracting and extending a blade from a knife handle, which comprises the knife handle, a knife body, a first braking piece, a second braking piece, a spring frame and a spring, wherein the knife rest structure comprises a knife handle and a knife body; a slot is arranged in the knife handle; the cutter body comprises a cutter rest which is slidably arranged in the slot and a blade which is detachably fixed at the front end of the cutter rest; the first braking piece is used for positioning the tool rest when the blade extends out of the tool handle; the second braking piece is used for positioning the tool rest when the blade is retracted into the tool holder; the front end and the rear end of the spring frame are respectively provided with a first bayonet and a second bayonet, and the two sides of the spring frame are respectively provided with a first bulge and a second bulge; the front end and the rear end of the spring are respectively provided with a first spring hook and a second spring hook, the first spring hook is clamped on the first bayonet, the second spring hook is clamped on the second bayonet, and the upper side of the tool rest is provided with a poking protrusion limited between the first spring hook and the second spring hook. The utility model is not only convenient for replacing the blade, but also can rapidly draw in and extend the blade out of the knife handle.

Description

Knife rest structure capable of rapidly retracting and extending blade from knife handle

Technical Field

The utility model relates to the technical field of art designing knives, in particular to a knife rest structure capable of rapidly retracting and extending a knife handle from a knife blade.

Background

In the daily work fields of mobile phone film sticking, maintenance, art designing, wallpaper, carving, scraping Mao Ci, trimming, automobile film sticking and the like, art designing cutters are often used.

Traditional art designing sword include the handle of a knife and with handle of a knife telescopic connection's blade, the blade mainly stretches out and draws back through the mode of manual push button, and the operation is harder, and the speed of ejecting and retracting is slower.

The specification of Chinese patent No. 202264229U discloses a novel axial telescopic spring knife, which stretches the knife body in a catapulting mode, wherein the stretching speed of the knife body is high, but the knife body is inconvenient to replace, so that the spring knife cannot be used as an art designer knife.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a knife rest structure capable of rapidly retracting and extending a blade into and out of a knife handle, so that the knife rest structure is convenient for replacing the blade, and the blade can be rapidly retracted and extended into and out of the knife handle.

The utility model provides a knife rest structure capable of rapidly retracting and extending a knife blade from a knife handle, which comprises:

the cutter handle is internally provided with a slot extending along the length direction, and the notch of the slot is arranged at the front end of the cutter handle;

the cutter body comprises a cutter rest slidably arranged in the slot and a blade detachably fixed at the front end of the cutter rest;

a first detent for positioning the blade holder when the blade extends out of the handle;

a second detent for positioning the blade holder when the blade is received in the handle;

the spring frame is arranged on the upper side of the cutter body in a sliding manner, a first bayonet and a second bayonet are respectively arranged at the front end and the rear end of the spring frame, a first bulge is arranged on the side edge of one side of the spring frame close to the front end, a second bulge is arranged on the side edge of the other side of the spring frame close to the rear end, the spring frame is pushed backwards to enable the first bulge to act on the first braking piece to release the positioning of the cutter frame, and the spring frame is pushed forwards to enable the second bulge to act on the second braking piece to release the positioning of the cutter frame;

the spring is arranged on the upper side of the spring frame, a first spring hook and a second spring hook are respectively arranged at the front end and the rear end of the spring, the first spring hook is clamped on the first bayonet, the second spring hook is clamped on the second bayonet, the first spring hook and the second spring hook are both protruded out of the lower side of the spring frame, and a poking protrusion limited between the first spring hook and the second spring hook is arranged on the upper side of the tool rest.

Further, the handle of a knife includes base and lid are located the apron of base upside, the slot is located in the base, the upside of base is equipped with and is used for installing the spout of spring bracket, the middle part of slot upside along length direction locate with the opening of spout intercommunication.

Further, a first groove is formed in the front portion of one side of the sliding groove, a second groove is formed in the rear portion of the other side of the sliding groove, the first groove and the second groove are respectively located above two sides of the slot, the first protrusion is slidably fitted in the first groove, the first braking piece is mounted on the side wall between the first groove and the slot, the second protrusion is slidably fitted in the second groove, and the second braking piece is mounted on the side wall between the second groove and the slot.

Further, a rear clamping position is arranged on the rear side of the tool rest close to one side of the first braking piece, and a front clamping position is arranged on the front side of the tool rest close to one side of the second braking piece;

the side wall between the first groove and the slot is provided with a first mounting opening, the first braking piece comprises a first braking piece and a first braking piece spring, the first braking piece is hinged to the first mounting opening, the first braking piece spring provides a torsion force for the first braking piece, when the blade stretches out, the first braking piece can keep the lower part to prop against the rear clamping position of the tool rest, and when the first bulge acts with the upper part of the first braking piece, the lower part of the first braking piece can be driven to upwards rotate and lift so as to release the tool rest;

the side wall between the second groove and the slot is provided with a second mounting opening, the second braking piece comprises a second braking piece and a second braking piece spring, the second braking piece is hinged to the second mounting opening, the second braking piece spring provides a torsion force for the second braking piece, when the blade is received, the second braking piece can keep the lower portion to prop against the front clamping position of the tool rest, and when the second bulge acts on the upper portion of the second braking piece, the lower portion of the second braking piece can be driven to rotate upwards to lift up to release the tool rest.

Further, the device also comprises a button, wherein the button is connected with the spring frame and used for pushing the spring frame to slide along the sliding groove.

Further, a guide groove is formed in the upper side of the base, close to the side portion of the first protrusion, a sliding portion which is matched with the guide groove in a sliding mode is arranged on the button, a clamping groove is formed in one side of the sliding portion, and clamping protrusions matched with the clamping grooves in a clamping mode are arranged on the first protrusion.

Further, a limiting guide groove extending along the length direction is formed in the lower side of the slot, and a limiting protrusion which is adapted to the inside of the limiting guide groove is arranged on the lower side of the tool rest.

Further, a mounting hole is formed in the tool rest, a brake sear is mounted in the mounting hole, and two ends of the brake sear protrude out of two sides of the tool rest respectively to form the poking protrusion and the limiting protrusion.

Further, the front end on the tool rest is provided with a mounting plate, one side of the mounting plate is provided with a clamping joint, the blade is provided with a clamping groove, and the clamping joint is clamped in the clamping groove.

Further, the clamping groove is provided with a front clamping groove part and a rear clamping groove part which are connected, and the width of the front clamping groove part is narrowed relative to the width of the rear clamping groove part;

the side part of the front end of the clamping connector is provided with a clamping groove, the clamping groove is clamped into the front clamping groove part and clamped at two sides of the blade, and the rear clamping groove part is clamped at the side part of the rear end of the clamping connector.

The beneficial effects of the utility model are as follows:

in the process that the blade stretches out of the handle for use, the first spring hook of the spring is clamped in the first bayonet at the front end of the spring frame and the front side of the poking protrusion at the upper side of the cutter holder, the second spring hook of the spring is clamped in the second bayonet at the rear end of the spring frame, meanwhile, the first braking piece is used for positioning the cutter holder, when the blade needs to be retracted into the handle, the spring frame is pushed backwards, the spring is lengthened, when the first protrusion acts on the first braking piece, the first braking piece releases the cutter holder, the cutter holder moves backwards under the ejection action of the spring, so that the blade is quickly retracted into the cutter holder, after the blade is retracted into the cutter holder, the first spring hook of the spring is clamped in the first bayonet at the front end of the spring frame, the second spring hook of the spring is clamped in the second bayonet at the rear end of the spring frame and the rear side of the poking protrusion at the upper side of the cutter holder, meanwhile, the second braking piece is used for positioning the cutter holder, when the blade needs to be extended out of the handle, the spring frame is pushed forwards, when the second protrusion acts on the second braking piece, the cutter holder is released, the cutter holder is moved backwards under the ejection action of the spring, so that the cutter holder is quickly extended out of the cutter holder.

Therefore, the knife rest structure capable of replacing the knife blade is adopted, after the knife blade is passivated, the knife rest extends out of the handle, the knife blade on the knife rest is disassembled and replaced, the knife blade is convenient to replace, meanwhile, the knife rest structure stretches out and draws back in an ejection mode, the knife blade can be quickly retracted and extended out of the knife handle in the use process, the operation is convenient, the labor protection is increased when the knife blade is retracted into the knife handle, and the accidental injury and the false cutting of the knife blade are avoided to the greatest extent.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram illustrating the disassembly of the various components of an embodiment of the present utility model;

FIG. 2 is a schematic view of the cutter body and the base of the cutter handle (the cutter body extends out of the cutter handle) according to the embodiment of the present utility model;

FIG. 3 is a schematic view of the cutter body and the base of the cutter handle according to the embodiment of the present utility model (the cutter body is retracted into the cutter handle);

FIG. 4 is a schematic view of a spring holder in accordance with an embodiment of the present utility model in combination with a base of a tool shank;

fig. 5 is a schematic view illustrating the separation of a blade holder and a blade according to an embodiment of the present utility model.

Reference numerals: 100-knife handle; 110-slots; 120-base; 130-cover plate; 140-sliding grooves; 141-a first groove; 142-a second groove; 150-a guide groove; 160-limiting guide grooves; 200-knife body; 210-a tool holder; 211-back clamping; 212-front clamping position; 213-mounting holes; 214-brake sear; 215-mounting a sheet; 216-a snap-fit; 220-blades; 221-a clamping groove; 2211—a front card slot section; 2212-a rear clip groove portion; 300-a first brake; 310-a first mounting port; 320-a first brake pad; 330-a first brake pad spring; 400-a second brake; 410-a second mounting port; 420-a second brake pad; 430-a second brake pad spring; 500-spring rack; 510—a first bayonet; 520-second bayonet; 530-a first bump; 531-snap-fit protrusions; 540-a second bump; 600-spring; 610-a first snap hook; 620-a second snap hook; 700-button; 710—a slide; 720-clamping groove.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.

As shown in fig. 1 to 5, the embodiment of the present utility model provides a tool holder structure for rapidly inserting and extracting a blade into and out of a tool holder, which includes a tool holder 100, a tool body 200, a first stopper 300, a second stopper 400, a spring holder 500, and a spring 600.

A slot 110 extending along the length direction is arranged in the knife handle 100, and a notch of the slot 110 is arranged at the front end of the knife handle 100.

The cutter body 200 includes a cutter holder 210 slidably mounted in the slot 110 and a blade 220 detachably fixed to a front end of the cutter holder 210.

Preferably, referring to fig. 5, the front end of the tool holder 210 is provided with a mounting plate 215, one side of the mounting plate 215 is provided with a clamping connector 216, the blade 220 is provided with a clamping groove 221, and the clamping connector 216 is clamped in the clamping groove 221, so that the mounting and dismounting of the blade 220 are facilitated. Specifically, the engaging groove 221 has a front engaging groove portion 2211 and a rear engaging groove portion 2212 connected to each other, and the width of the front engaging groove portion 2211 is narrowed with respect to the rear engaging groove portion 2212; the side portion of the front end of the clamping connector 216 is provided with a clamping groove, the clamping groove is clamped into the front clamping groove portion 2211 and clamped on two sides of the blade 220, and the rear clamping groove portion 2212 is clamped on the side portion of the rear end of the clamping connector 216, so that the clamping connector 216 is prevented from easily exiting the clamping groove 221 after being clamped into the clamping groove 221, and the blade 220 and the blade holder 210 are firmly connected.

The first detent 300 is used to position the tool holder 210 as the blade 220 extends out of the tool holder 100.

Second detent 400 is used to position tool holder 210 when blade 220 is received in tool holder 100.

The spring frame 500 is slidably disposed on the upper side of the cutter body 200, the front and rear ends of the spring frame 500 are respectively provided with a first bayonet 510 and a second bayonet 520, the side edge of one side of the spring frame 500 is provided with a first protrusion 530 near the front end, the side edge of the other side of the spring frame 500 is provided with a second protrusion 540 near the rear end, and pushing the spring frame 500 backward can enable the first protrusion 530 to act on the first braking member 300 to release the positioning of the cutter frame 210, and pushing the spring frame 500 forward can enable the second protrusion 540 to act on the second braking member 400 to release the positioning of the cutter frame 210.

The spring 600 is arranged on the upper side of the spring frame 500, the front end and the rear end of the spring 600 are respectively provided with a first spring hook 610 and a second spring hook 620, the first spring hook 610 is clamped on the first bayonet 510, the second spring hook 620 is clamped on the second bayonet 520, the first spring hook 610 and the second spring hook 620 are both protruded on the lower side of the spring frame 500, and the upper side of the tool rest 210 is provided with a poking protrusion limited between the first spring hook 610 and the second spring hook 620.

In this embodiment, the lower side of the slot 110 is provided with a limiting guide slot 160 extending along the length direction, the lower side of the tool rest 210 is provided with a limiting protrusion adapted to the inside of the limiting guide slot 160, and the limiting guide slot 160 can limit the stroke of the tool rest 210 moving back and forth.

Specifically, the tool holder 210 is provided with a mounting hole 213, a brake stopper 214 is mounted in the mounting hole 213, and two ends of the brake stopper 214 protrude from two sides of the tool holder 210 respectively to form a toggle protrusion and a limit protrusion.

In the process that the blade 220 extends out of the handle for use, the first spring hook 610 of the spring 600 is clamped in the first bayonet 510 at the front end of the spring holder 500 and the front side of the poking protrusion at the upper side of the blade holder 210, the second spring hook 620 of the spring 600 is clamped in the second bayonet 520 at the rear end of the spring holder 500, meanwhile, when the first brake 300 is used for positioning the blade 220 into the handle, the spring holder 500 is pushed backwards, the spring 600 is lengthened, when the first protrusion 530 acts on the first brake 300, the first brake 300 releases the blade holder 210, the blade holder 210 moves backwards under the ejection action of the spring 600, so that the blade 220 is quickly retracted into the blade holder 100, the first spring hook 610 of the spring 600 is clamped in the first bayonet 510 at the front end of the spring holder 500, the second spring hook 620 of the spring 600 is clamped in the second bayonet 520 at the rear end of the spring holder 500 and the rear side of the poking protrusion at the upper side of the blade holder 210, when the second brake 400 is used for positioning the blade holder 210, when the blade 220 is required to be pushed out of the handle, when the first protrusion 530 acts on the first brake 300, the first brake 300 releases the blade holder 210, the blade holder 210 is released, the first brake 210 is moved backwards under the ejection action of the spring 600 acts on the second brake 400, and the second brake 400 is rapidly released on the blade holder 600 when the second brake 600 is used for extending out of the blade holder 600.

Therefore, the knife rest structure capable of replacing the knife blade 220 is adopted, after the knife blade 220 is passivated, the knife rest 210 extends out of the handle 100, the knife blade 220 on the knife rest 210 is disassembled and replaced, the knife blade 220 is convenient to replace, meanwhile, the knife rest structure stretches out and draws back in an ejection mode, the knife blade 220 can be quickly retracted and extended out of the knife handle 100 in the use process, the operation is convenient, the knife blade 220 is retracted into the knife handle 100, labor protection is increased, and accidental injury and false cutting of the knife blade 220 are avoided to the greatest extent.

The utility model can be used in the daily work fields of mobile phone film sticking, maintenance, art designing, wallpaper, carving, scraping Mao Ci, trimming, automobile film sticking and the like, and is convenient to use and operate, and labor protection is increased.

In a preferred embodiment, referring to fig. 1, the tool shank 100 includes a base 120 and a cover plate 130 covering the upper side of the base 120, the slot 110 is disposed in the base 120, a chute 140 for mounting a spring rack 500 is disposed on the upper side of the base 120, and an opening communicating with the chute 140 is disposed in the middle of the upper side of the slot 110 along the length direction.

Also, the present embodiment further includes a button 700, and the button 700 is connected to the spring frame 500 for pushing the spring frame 500 to slide along the sliding groove 140.

Preferably, referring to fig. 1 and 4, a guiding groove 150 is provided on an upper side of the base 120 near an edge of the first protrusion 530, a sliding portion 710 slidably fitted in the guiding groove 150 is provided on the button 700, a locking groove 720 is provided on one side of the sliding portion 710, and a locking protrusion 531 engaged with the locking groove 720 is provided on the first protrusion 530.

During assembly, the tool holder 210 is inserted into the slot 110 from the notch at the front end of the tool holder 100, then the first spring hook 610 and the second spring hook 620 at the two ends of the spring 600 are respectively clamped on the first bayonet 510 and the second bayonet 520 at the two ends of the spring holder 500, the first spring hook 610 and the second spring hook 620 face downwards, then the spring holder 500 clamped with the spring 600 is installed in the chute 140 on the base 120, then the clamping groove 720 on the button 700 is aligned to the clamping protrusion 531 clamped into the first protrusion 530, meanwhile the sliding part 710 of the button 700 is installed in the guide groove 150 on the base 120, and finally the cover plate 130 is covered and screwed down for fixing.

In this embodiment, a first groove 141 is disposed near the front of one side of the sliding groove 140, a second groove 142 is disposed near the rear of the other side of the sliding groove 140, the first groove 141 and the second groove 142 are respectively located above two sides of the slot 110, a first protrusion 530 is slidably fitted in the first groove 141, a first braking member 300 is mounted on a side wall between the first groove 141 and the slot 110, a second protrusion 540 is slidably fitted in the second groove 142, and a second braking member 400 is mounted on a side wall between the second groove 142 and the slot 110.

Specifically, the rear side of the tool holder 210 near the first brake 300 is provided with a rear detent 211, and the front side of the tool holder 210 near the second brake 400 is provided with a front detent 212.

The first mounting opening 310 is formed in the side wall between the first groove 141 and the slot 110, the first brake member 300 includes a first brake pad 320 and a first brake pad spring 330, the first brake pad 320 is hinged to the first mounting opening 310, the first brake pad spring 330 provides a torsion force for the first brake pad 320, when the blade 220 extends, the first brake pad 320 can keep the lower portion to prop against the rear clamping position 211 of the tool holder 210, and when the first protrusion 530 acts on the upper portion of the first brake pad 320, the lower portion of the first brake pad 320 can be driven to rotate upwards to lift so as to release the tool holder 210.

The second mounting opening 410 is formed in the side wall between the second groove 142 and the slot 110, the second brake member 400 includes a second brake pad 420 and a second brake pad spring 430, the second brake pad 420 is hinged to the second mounting opening 410, the second brake pad spring 430 provides a torsion force for the second brake pad 420, when the blade 220 is retracted, the second brake pad 420 can keep the lower portion to prop against the front clamping position 212 of the tool holder 210, and when the second protrusion 540 acts with the upper portion of the second brake pad 420, the lower portion of the second brake pad 420 can be driven to rotate upwards to lift up so as to release the tool holder 210.

When the blade 220 extends, the first spring hook 610 hooks the poking protrusion on the blade holder 210, the second spring hook 620 hooks the second bayonet 520 on the spring holder 500, the spring 600 is in a stretched state, and provides a backward pulling elastic force for the blade holder 210, at this time, the rear clamping position 211 of the blade holder 210 is clamped by the first braking piece 320, and cannot move backward, the blade holder 210 and the blade holder 100 are stable, and when the button 700 pushes the spring holder 500 backward, the first protrusion 530 on the spring holder 500 pokes the first braking piece 320, so that the blade holder 210 can be released when the blade 220 is retracted.

When the blade 220 is retracted, the first spring hook 610 hooks the first bayonet 510 on the blade holder 210, the second spring hook 620 hooks the poking protrusion on the spring holder 500, the spring 600 is in a stretched state, and provides a forward pulling elastic force for the blade holder 210, at this time, the front clamping position 212 of the blade holder 210 is clamped by the second braking piece 420, and cannot move forward, the blade holder 210 and the knife handle 100 are stable, and when the button 700 pushes the spring holder 500 forward, the second protrusion 540 on the spring holder 500 pokes the second braking piece 420, so that the blade holder 210 can be released when the blade 220 is extended.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims (10)

1. A blade carrier structure for rapidly receiving and extending a blade from a handle of a knife, comprising:

the cutter handle is internally provided with a slot extending along the length direction, and the notch of the slot is arranged at the front end of the cutter handle;

the cutter body comprises a cutter rest slidably arranged in the slot and a blade detachably fixed at the front end of the cutter rest;

a first detent for positioning the blade holder when the blade extends out of the handle;

a second detent for positioning the blade holder when the blade is received in the handle;

the spring frame is arranged on the upper side of the cutter body in a sliding manner, a first bayonet and a second bayonet are respectively arranged at the front end and the rear end of the spring frame, a first bulge is arranged on the side edge of one side of the spring frame close to the front end, a second bulge is arranged on the side edge of the other side of the spring frame close to the rear end, the spring frame is pushed backwards to enable the first bulge to act on the first braking piece to release the positioning of the cutter frame, and the spring frame is pushed forwards to enable the second bulge to act on the second braking piece to release the positioning of the cutter frame;

the spring is arranged on the upper side of the spring frame, a first spring hook and a second spring hook are respectively arranged at the front end and the rear end of the spring, the first spring hook is clamped on the first bayonet, the second spring hook is clamped on the second bayonet, the first spring hook and the second spring hook are both protruded out of the lower side of the spring frame, and a poking protrusion limited between the first spring hook and the second spring hook is arranged on the upper side of the tool rest.

2. A blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 1,

the utility model discloses a handle of a knife, including the base and cover locate the apron of base upside, the slot is located in the base, the upside of base is equipped with and is used for installing the spout of spring bracket, the middle part of slot upside along length direction locate with the opening of spout intercommunication.

3. A blade holder structure for rapidly retracting and extending a blade into and out of a handle according to claim 2, wherein,

one side of the chute is provided with a first groove near the front part, the other side of the chute is provided with a second groove near the rear part, the first groove and the second groove are respectively positioned above two sides of the slot, the first bulge is slidably matched with the first groove, the first braking piece is arranged on the side wall between the first groove and the slot, the second bulge is slidably matched with the second groove, and the second braking piece is arranged on the side wall between the second groove and the slot.

4. A blade carrier structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 3,

the rear side of the tool rest, which is close to one side of the first braking piece, is provided with a rear clamping position, and the front side of the tool rest, which is close to one side of the second braking piece, is provided with a front clamping position;

the side wall between the first groove and the slot is provided with a first mounting opening, the first braking piece comprises a first braking piece and a first braking piece spring, the first braking piece is hinged to the first mounting opening, the first braking piece spring provides a torsion force for the first braking piece, when the blade stretches out, the first braking piece can keep the lower part to prop against the rear clamping position of the tool rest, and when the first bulge acts with the upper part of the first braking piece, the lower part of the first braking piece can be driven to upwards rotate and lift so as to release the tool rest;

the side wall between the second groove and the slot is provided with a second mounting opening, the second braking piece comprises a second braking piece and a second braking piece spring, the second braking piece is hinged to the second mounting opening, the second braking piece spring provides a torsion force for the second braking piece, when the blade is received, the second braking piece can keep the lower portion to prop against the front clamping position of the tool rest, and when the second bulge acts on the upper portion of the second braking piece, the lower portion of the second braking piece can be driven to rotate upwards to lift up to release the tool rest.

5. A blade holder structure for rapidly retracting and extending a blade into and out of a handle according to claim 2, wherein,

the spring rack is connected with the sliding groove, and the spring rack is connected with the sliding groove.

6. A blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 5,

the upper side of base is close to first bellied limit portion is equipped with the guide way, have on the button slip adaptation in the sliding part in the guide way, the draw-in groove has been seted up to one side of sliding part, be equipped with on the first arch with draw-in groove joint complex joint arch.

7. A blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 1,

the lower side of slot is equipped with the spacing guide slot that extends along length direction, the downside of knife rest is equipped with the adaptation in spacing guide slot spacing protruding.

8. A blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 7,

the tool rest is provided with a mounting hole, a brake sear is mounted in the mounting hole, and two ends of the brake sear respectively protrude out of two sides of the tool rest to form the poking protrusion and the limiting protrusion.

9. A blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 1,

the front end on the knife rest is provided with a mounting sheet, one side of the mounting sheet is provided with a clamping joint, the knife blade is provided with a clamping groove, and the clamping joint is clamped in the clamping groove.

10. The blade holder structure for rapidly retracting and extending a blade into and out of a tool shank according to claim 9, wherein,

the clamping groove is provided with a front clamping groove part and a rear clamping groove part which are connected, and the width of the front clamping groove part is narrowed relative to the width of the rear clamping groove part;

the side part of the front end of the clamping connector is provided with a clamping groove, the clamping groove is clamped into the front clamping groove part and clamped at two sides of the blade, and the rear clamping groove part is clamped at the side part of the rear end of the clamping connector.