CN214136127U - Cutter with replaceable blade - Google Patents

Abstract

The embodiment of the utility model discloses cutter of removable blade, including the casing, set up slidable knife rest assembly on the casing and be used for placing the sword storehouse of blade for use, the cutter still includes elasticity tool changing button, and elasticity tool changing button is fixed in on the casing, and knife rest assembly includes sliding button, sliding block and elasticity fixture block, and on elasticity fixture block was fixed in the sliding block through metal shrapnel, be fixed with the blade on the sliding block, be provided with the recess on the back of the blade ridge, be formed with on the elasticity fixture block with the block portion of recess cooperation in order to block the blade, still be formed with the trigger part on the elasticity fixture block, trigger part removes under the triggering of elasticity tool changing button, drives the block portion and removes and breaks away from the contact with the recess under the elastic action of elasticity fixture block. The utility model discloses an elasticity tool changing button and elasticity fixture block, simple structure, stability is good, and is with low costs, has better fatigue resistance.

Description

Cutter with replaceable blade

Technical Field

The utility model relates to a cutter especially relates to a can change cutter of blade automatically.

Background

For the cutter such as a utility knife which needs a thin blade, the blade is very easy to damage in the using process, and how to safely and quickly replace the blade is a problem to be solved. When the blade needs to be replaced, the blade replacing button is triggered to pull out the blade. Current blade button includes blade lock and spring, and the blade lock includes the spring bolt, and locking portion pushes away multiple structures such as portion, and the structure is complicated, and each subassembly of blade button is mostly the injection molding, and is with high costs, the easy inefficacy.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the embodiment of the utility model provides a cutter of removable blade, the simple structure of changing the blade, it is with low costs, not fragile, convenient safe and reliable.

The utility model provides a cutter of removable blade, including the casing, set up slidable knife rest assembly on the casing and be used for placing the sword storehouse of blade for use, the cutter still includes elasticity tool changing button, elasticity tool changing button is fixed in on the casing, knife rest assembly includes sliding button, sliding block and elasticity fixture block, elasticity fixture block is fixed in through metal shrapnel on the sliding block, be fixed with the blade on the sliding block, be provided with the recess on the blade back, be formed with on the elasticity fixture block with the block portion of recess cooperation in order to block the blade, still be formed with trigger part on the elasticity fixture block, trigger part removes under the triggering of elasticity tool changing button, drives block portion removal and recess breaking away from the contact under the elastic action of elasticity fixture block.

Optionally, the elastic clamping block comprises a clamping block body, and the clamping block body is perpendicular to the clamping portion and the triggering portion respectively.

Optionally, the triggering portion is a protrusion, and a length of the protrusion in a direction perpendicular to the fixture block body is greater than a length of the engaging portion in a direction perpendicular to the fixture block body.

Optionally, the engaging portion includes a first engaging portion and a second engaging portion, and a projection of the protrusion on a vertical surface of the fixture block body is located between the first engaging portion and the second engaging portion.

Optionally, the length of the projection in the direction perpendicular to the fixture block body is 1.8-2.2 mm.

Optionally, the height of the projection in the direction parallel to the cartridge body is greater than the height of the engaging portion in the direction parallel to the cartridge body.

Optionally, one end of the elastic tool changing button is provided with a fixing hole for fixing the elastic tool changing button to the housing, and the other end of the elastic tool changing button is provided with a pressing part.

Optionally, be provided with a plurality of fender positions on the gliding route of tool holder subassembly on the casing, the gear includes the tool changing gear, be provided with the bellying on the splenium of elasticity tool changing button, work as tool holder subassembly slides when reaching the tool changing gear, the bellying of elasticity tool changing button with the lug contact.

Optionally, the tool changing device further comprises a reset spring, one end of the reset spring is fixed on the inner wall of the shell, the other end of the reset spring is fixed on the inner wall of the bulge part of the elastic tool changing button, and the elastic tool changing button automatically resets under the action of self elasticity and the reset spring after being triggered.

Optionally, the resilient tool changing button is a resilient plastic button.

The embodiment of the utility model provides an among the technical scheme, the cutter of removable blade is including being fixed in the elasticity tool changing button on the casing, and on the elasticity fixture block was fixed in the sliding block through metal shrapnel, be formed with on the elasticity fixture block with the block portion of the recess cooperation of blade back in order to block the blade, still be formed with the trigger part on the elasticity fixture block, trigger part removes under the triggering of elasticity tool changing button, drives the block portion and removes and break away from the contact with the recess under the elastic action of elasticity fixture block, consequently for prior art, the embodiment of the utility model provides an adopt elasticity tool changing button and elasticity fixture block to carry out the unblock of blade, simple structure, stability is good, and is with low costs, has better fatigue resistance.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an explosion diagram of the knife magazine of the present invention.

Fig. 3 is a schematic view of the housing opening of the present invention.

Fig. 4 is a schematic structural diagram of the inner part of the casing of the present invention.

Fig. 5 is a schematic structural view of the tool holder assembly and the tool magazine of the present invention.

Fig. 6 is a schematic structural diagram of the elastic tool changing button and the elastic fixture block of the present invention.

Fig. 7 is a sectional view along the axial direction of the elastic tool changing button of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

The utility model provides a cutter with replaceable blades, please refer to fig. 1-5, the cutter comprises a housing 10, a slidable tool holder assembly 20 arranged on the housing 10 and a tool magazine 30 for placing the blades to be used, the tool magazine 30 is installed on the housing 10 in a pluggable manner, the cutter further comprises an elastic tool changing button 40, the elastic tool changing button 40 is fixed on the housing 10, the tool holder assembly 20 comprises a sliding button 21, a sliding block 22 and an elastic fixture block 23 fixed on the sliding block 22, the elastic fixture block 23 is fixed on the sliding block 22 through a metal elastic sheet 234, the sliding block 22 is fixed with the blades 50, a groove 51 is arranged on the back of the blades 50, a clamping part 231 matched with the groove 51 to clamp the blades 50 is formed on the elastic fixture block 23, a trigger part 232 is further formed on the elastic fixture block 23, the trigger part 232 moves under the trigger of the elastic tool changing button 40, the elastic latch 23 drives the engaging portion 231 to move out of contact with the recess 51.

Referring to fig. 3, the housing 10 includes a first housing 14 and a second housing 15, a first groove 16 for accommodating an elastic tool changing button 40 is disposed on the first housing 14, the elastic tool changing button 40 includes a pressing portion 41, and the pressing portion 41 of the elastic tool changing button 40 protrudes from the first groove 16 of the first housing 14 for being pressed by a user. The housing 10 is further provided with a magazine hole 13 for inserting and pulling out the magazine 30, the magazine 50 is used for placing a plurality of spare blades 50, and the blades 50 are fixed in the magazine 30 through the elastic metal sheet 70. The two sides of the housing of the knife compartment 30 are respectively provided with the squeezing parts 31, when the knife compartment 30 needs to be pulled out from the housing 10, the thumb and the forefinger respectively squeeze the two squeezing parts 31, the squeezing parts 31 deform under the action of pressure to be separated from contact with the inner wall of the housing 10, and at the moment, the knife compartment 30 can be pulled out from the housing 10.

In one embodiment of the present invention, please refer to fig. 5 and 6, the elastic latch 23 includes a latch body 233, the latch body 233 is perpendicular to the engaging portion 231, and the latch body 233 is perpendicular to the triggering portion 232. As will be appreciated by those skilled in the art, the latch body 233, the latching portion 231, and the triggering portion 232 are integrally formed.

Referring to fig. 6, the elastic latch 23 includes a latch body 233, the latch body 233 is provided with a fastening portion 231 perpendicular to the latch body 233, wherein the fastening portion 231 may be an integrally formed cylinder or a cylinder fixed on the latch body 233, the cylinder is disposed in the groove 51 of the blade 50, the knife holder assembly 20 moves under the pushing of an external force, and drives the blade 50 to move together in the housing 10, so that the blade 50 extends out of the housing 10 or in the retracted housing 10.

In one embodiment of the present invention, the elastic fixture block 23 may be a metal spring, the metal spring includes a spring body and a locking portion and a triggering portion perpendicular to the spring body, and the spring body is directly fixedly connected to the sliding block 22.

In one embodiment of the present invention, please refer to fig. 6, the triggering portion 232 is a protrusion 232, the protrusion 232 is perpendicular to the fixture block body 233 and extends along the thickness direction of the blade 50, and the length of the protrusion 232 in the direction perpendicular to the fixture block body 233 is greater than the length of the engaging portion 231 in the direction perpendicular to the fixture block body 233.

In one embodiment of the present invention, please refer to fig. 6, one end of the elastic tool changing button 40 is provided with a fixing hole 42 for fixing with the housing 10, the other end is provided with a pressing portion 41, and a protruding portion 43 is provided on one side of the pressing portion 41 facing away from the pressing portion, the elastic tool changing button 40 is an elastic plastic button, when the pressing portion 41 is pressed, the pressing portion 41 moves along the pressure direction, when the pressing portion 41 is released after being pressed, the pressing portion 41 returns to the original position of the first groove 16 under the action of elastic force, which facilitates the next pressing and triggering of the user. The specific principle is that when the elastic tool changing button 40 is triggered under the action of pressure, the protruding portion 43 of the elastic tool changing button 40 firstly contacts with the protruding block 232, the protruding portion 43 drives the protruding block 232 to move under the action of external force, the fixture block body 233 is an elastic element, the fixture block 231 is driven to move for a certain distance under the action of elasticity, the fixture block 231 is separated from the groove 51 of the blade 50 on the outermost surface, the blade 50 on the outermost surface is separated from the tool rest assembly 20, and at the moment, the blade 50 can be taken out of the shell 10 of the tool.

The utility model discloses a wherein in one of them embodiment, lug 232 is arranged in on the 50 spines of blade, lug 232 is greater than in being on a parallel with fixture block body 223 ascending height of block portion 231 in being on a parallel with fixture block body 223, when elasticity tool changing button 40 triggered, bellying 43 contacted with the lug 232 of elasticity fixture block 23 earlier, and the removal through lug 232 drives the removal of block portion 231, and then makes blade 50 break away from the recess dashes. Referring to fig. 6, the engaging portion 231 includes a first engaging portion and a second engaging portion, a first groove and a second groove are formed on a ridge of the blade 50, the first engaging portion and the second engaging portion are respectively disposed in the first groove and the second groove to fix the blade 50, so that fixing strength is increased, a projection of the protrusion 232 on a vertical surface of the latch body 223 is located between the first engaging portion and the second engaging portion, so that stability of the protrusion 232 is increased, the protrusion 232 moves under triggering of the elastic tool changing button 40, the first engaging portion and the second engaging portion move a preset distance under an elastic action of the latch body 223, and the first engaging portion and the second engaging portion are separated from contact with the groove 51 of the blade 50 on the outermost surface, so that the blade 50 on the outermost surface is separated from the blade holder assembly 20.

The utility model discloses an in one of them embodiment, lug 232 is at the perpendicular to length in the fixture block body 223 direction can not too long, also can not be too short, if too long, after elasticity tool changing button 40 triggers, lug 232 is difficult to break away from blade 50's back completely, and blade 50 is difficult to take out, if lug 232 is too short, the removal that lug 232 can not arouse in the triggering of elasticity tool changing button 40, consequently the utility model discloses the length of selecting lug 232 is 1.8-2.2mm, and the back is triggered to elasticity tool changing button 40 of being convenient for, lug 232 can break away from blade 50's back.

In one embodiment of the present invention, the housing 10 is provided with a plurality of gears along the sliding path of the tool rest assembly 20, the gears are groove-shaped structures 12, the gears are formed by combining the groove-shaped structures 12 on the first housing 14 and the second housing 15, and a spring assembly 60 is provided below the groove-shaped structures 12 for resetting after the sliding button 21 is pressed. The gear comprises a first gear, a second gear and a tool changing gear, the elastic tool changing button 40 is located at the tool changing gear, when the tool holder assembly 20 moves from the first gear to the second gear under the action of external force and slides to the tool changing gear, as shown in fig. 7, at the moment, the bump 232 is in direct contact with the pressing part 41, when the pressing part 41 is pressed, the pressing part 41 moves under the action of external force, namely, the protrusion 43 moves towards the direction, the protrusion 43 extrudes the bump 232 to drive the bump 232 to move, because the bump 232 is made of elastic material, and the fixture block body 223 is fixed with the slider through the metal elastic sheet 234, the movement of the bump 232 can drive the clamping part 231 to move, the clamping part 231 is separated from the groove 51 of the blade 50, and at the moment, the blade 50 can be taken out.

In one embodiment of the present invention, the elastic tool changing button 40 is fixed on the housing 10 by a return spring. Specifically, reset spring's one end is fixed on the fixed column on casing 10, and reset spring's the other end is fixed on the fixed column of elasticity tool changing button 40 inside wall, and elasticity tool changing button 40 triggers back automatic re-setting under self elasticity and reset spring's effect, pops out in the button groove that holds elasticity tool changing button from casing 10, and the user of being convenient for triggers next time.

When the utility model is used, the blade 50 is extended or contracted from the shell 10 into the shell 10 by pushing the sliding button 21 to move at the first gear, the second gear and the tool changing gear, when the previous blade 50 is worn and needs to be replaced, the sliding button 21 is pushed to the tool changing gear, the tool changing button 40 is pressed, the convex part 43 moves downwards under the action of external force to extrude the convex block 232 and drive the convex block 232 to move, the convex block 232 moves to drive the clamping part 231 to move, the clamping part 231 is separated from the groove 51 of the blade 50, at the moment, the blade 50 can be taken out from the outlet in front of the shell 10, under the action of the elastic metal sheet 70, a new blade 50 can be ejected for use, and after all the blades 50 in the blade bin 30 are used up, the sliding button 21 only needs to be pushed to the first gear, the extruding part 31 of the shell of the blade bin 30 is extruded, the blade bin 30 can be taken out, the cartridge 30 is filled with the blades 50 and then loaded into the housing 10 for subsequent use.

The utility model discloses preferred elasticity tool changing button is the elastic plastic button, simple structure, and stability is good, and is with low costs, and the elasticity fixture block is metal elasticity fixture block, and on the metal elasticity fixture block was fixed in the sliding block through metal shrapnel, the utility model discloses a natural elasticity of metal carries out elastic deformation and carries out the unblock to the blade, has better fatigue resistance.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a cutter of removable blade, includes the casing, sets up slidable knife rest assembly on the casing and be used for placing the sword storehouse of blade for use, its characterized in that, the cutter still includes elasticity tool changing button, elasticity tool changing button is fixed in on the casing, knife rest assembly includes sliding button, sliding block and elasticity fixture block, elasticity fixture block is fixed in through metal shrapnel on the sliding block, be fixed with the blade on the sliding block, be provided with the recess on the blade back, be formed with on the elasticity fixture block with the block portion of recess cooperation in order to block the blade, still be formed with the portion of triggering on the elasticity fixture block, the portion of triggering removes under the triggering of elasticity tool changing button, drives the block portion of clamping and removes and the recess breaks away from the contact under the elastic action of elasticity fixture block.

2. The replaceable blade tool of claim 1 wherein said resilient cartridge includes a cartridge body, said cartridge body being disposed perpendicular to said engagement portion and said trigger portion, respectively.

3. The replaceable blade tool of claim 2 wherein said trigger is a projection, said projection having a length perpendicular to said cartridge body that is greater than a length of said engagement portion perpendicular to said cartridge body.

4. The replaceable insert cutting tool of claim 3 wherein the engagement portion comprises a first engagement portion and a second engagement portion, and wherein the projection is located between the first engagement portion and the second engagement portion in a projection of the projection onto a vertical plane of the cartridge body.

5. The replaceable blade tool of claim 3, wherein said protrusion has a length in a direction perpendicular to said cartridge body of 1.8-2.2 mm.

6. The replaceable blade tool of claim 3 wherein said protrusion has a height in a direction parallel to said cartridge body that is greater than a height of said engagement portion in a direction parallel to said cartridge body.

7. The insert-replaceable tool according to claim 3, wherein the elastic tool changing button has a fixing hole for fixing the pair with the housing at one end and a pressing portion at the other end.

8. The cutting tool with the replaceable blade as claimed in claim 7, wherein the housing is provided with a plurality of positions along a sliding path of the tool holder assembly, the positions include tool changing positions, the pressing portion of the elastic tool changing button is provided with a protruding portion, and when the tool holder assembly slides to the tool changing positions, the protruding portion of the elastic tool changing button contacts with the protruding block.

9. The cutter with the replaceable blade as claimed in claim 8, further comprising a return spring, wherein one end of the return spring is fixed on the inner wall of the shell, the other end of the return spring is fixed on the inner wall of the protrusion part of the elastic tool changing button, and the elastic tool changing button automatically resets under the action of self elasticity and the return spring after being triggered.

10. The replaceable blade tool of claim 1, wherein the resilient tool changing button is a resilient plastic button.

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