CN219294034U - Art designing knife convenient for blade replacement - Google Patents

Abstract

The application discloses art designing sword convenient to change blade includes the casing, be provided with telescopic movable knife rest in the casing, detachably is provided with the blade on the movable knife rest, movable knife rest can slide between first working position, second working position and third working position, rotationally be provided with the blade retaining member on the movable knife rest, be provided with the boss on the blade retaining member, be provided with on the casing with boss complex spacing portion, when movable knife rest slides to third working position, boss and spacing portion butt, the blade retaining member is rotated to an unblock state by a locking state, the blade loses the fixing of blade retaining member, the user can carry out the change to the blade. The blade locking piece can be switched between a locking state and an unlocking state along with the sliding of the movable knife rest, and a user only needs to slide the movable knife rest to a third working position, and the blade locking piece rotates to the unlocking state, so that the blade can be easily taken out from the movable knife rest to be replaced.

Description

Art designing knife convenient for blade replacement

Technical Field

The application relates to the technical field of art designing knives, in particular to an art designing knife with a blade convenient to replace.

Background

Currently, art designing knives have been widely used in daily life, and people can conveniently cut various articles using the art designing knives. The blade is used as a main cutting part of the art designing knife, is easy to passivate in the daily cutting process, and the passivated blade cannot be cut, so that the passivated blade needs to be replaced, and therefore whether the art designing knife has a design for conveniently replacing the blade is very important.

However, the existing art knife has the defects that the blade is troublesome to replace and not fast and convenient, the blade replacement can be performed by means of other tools such as a screwdriver, the requirements of people on conveniently and fast blade replacement cannot be well met, and meanwhile fingers are easy to cut to cause injury when the blade is replaced.

Disclosure of Invention

An object of the present application is to provide an art designer's knife that is convenient for change the blade to solve the trouble problem of art designer's knife blade change.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the utility model provides an art designing sword convenient to change blade, includes the casing, be provided with telescopic movable knife rest in the casing, detachably is provided with the blade on the movable knife rest, movable knife rest can slide between first working position, second working position and third working position, rotationally be provided with the blade retaining member on the movable knife rest, the blade retaining member is used for with the blade locking is in on the movable knife rest, be provided with the boss on the blade retaining member, be provided with on the casing with boss complex spacing portion, the movable knife rest is in when first working position, the blade is located in the casing just the blade retaining member is in locking state, the movable knife rest is in when second working position, the blade removes to outside the casing just the blade retaining member is in locking state, when movable knife rest slides to the third working position, the blade removes outside the casing, the boss with spacing portion butt for the blade retaining member is lost locking state and is rotated to the unblock state, the blade retaining member can be fixed to the blade for the user.

Preferably, the blade locking member is provided with locking blocks, the locking blocks and the bosses are respectively arranged at two ends of the blade locking member, the back of the blade is provided with corresponding locking grooves, and when the blade locking member is in a locking state, the locking blocks are matched with the locking grooves so as to fix the blade on the movable tool rest.

As another preferable mode, a first reset piece is arranged between the blade locking piece and the movable tool rest, the first reset piece is suitable for continuously applying an acting force rotating towards the locking state to the blade locking piece, and then after the boss is separated from the limiting part, the blade locking piece can be reset to the locking state under the driving of the first reset piece.

Further preferably, a yielding space is provided in the housing, and the yielding space is adapted to accommodate the blade lock when the blade lock is in an unlocked state.

Further, a second reset piece is further arranged between the movable tool rest and the shell, one end of the second reset piece is fixedly arranged on the hook of the movable tool rest, the other end of the second reset piece is fixedly arranged on the fixed column of the shell, and the second reset piece is suitable for continuously applying acting force for retracting towards the inside of the shell to the movable tool rest.

Further, a hand push handle is further arranged on the movable knife rest, the hand push handle and the movable knife rest are of an integrated structure, and the hand push handle penetrates through a sliding groove on the shell and extends out of the sliding groove.

Further, a mounting groove is further formed in the shell, a locking push button is slidably arranged in the mounting groove, the locking push button can slide between a limiting position and a replacing position, and when the locking push button is located at the limiting position, the locking push button is abutted to the movable tool rest, and the movable tool rest is limited to slide from the second working position to the third working position.

Further, a first limit groove and a second limit groove are formed in one side of the mounting groove, a limit projection is arranged on the locking push button, and the limit projection is suitable for being matched with the first limit groove and the second limit groove, so that the locking push button is limited at a limit position or a replacement position when the external force does not exceed a preset value.

Further, a hanging hole is formed in the tail end of the shell.

Compared with the prior art, the beneficial effect of this application lies in:

the movable knife rest is provided with the blade locking piece, the blade locking piece can be switched between a locking state and an unlocking state along with the sliding of the movable knife rest, a user only needs to slide the movable knife rest to a third working position in the use process, the limiting part on the shell is abutted with the boss of the blade locking piece, the blade locking piece rotates to the unlocking state, the blade locking piece is separated from the blade, the blade is in a free state capable of being separated from the movable knife rest, and the user can easily take out the blade from the movable knife rest for replacement without other tools.

Drawings

FIG. 1 is a perspective view of an art designer's knife for facilitating blade replacement in the present application;

FIG. 2 is an exploded view of the utility knife for facilitating blade replacement in the present application;

FIG. 3 is a schematic view of the movable blade carrier of the present application in a first operative position;

FIG. 4 is a schematic view of the movable blade carrier of the present application in a second operative position;

FIG. 5 is a schematic view of the movable blade carrier of the present application in a third operative position;

FIG. 6 is a perspective view of a blade lock of the present application;

FIG. 7 is a schematic illustration of the cooperation of the movable blade carrier and the second restoring member of the present application;

FIG. 8 is a perspective view of the locking push button of the present application;

FIG. 9 is a schematic view of a top plate of the housing of the present application;

FIG. 10 is a schematic view of the locking push button of the present application in a limit position and the movable blade carrier in a second operative position;

fig. 11 is a schematic view of the locking push button in the change position and the movable blade carrier in the third working position.

In the figure: 1. a housing; 11. a chute; 12. a limit part; 13. a space for giving way; 14. fixing the column; 15. a top plate; 16. a bottom plate; 17. a mounting groove; 171. the first limit groove; 172. the second limit groove; 2. a movable tool rest; 21. a fixed cavity; 22. a hook; 23. a first clamping block; 3. a push handle; 4. a blade locking member; 41. a first end; 42. a second end; 43. a locking block; 44. a boss; 5. a blade; 51. a locking groove; 6. a first reset member; 7. a second reset member; 8. locking the push button; 81. a limit bump; 82. a second clamping block; 9. hanging holes.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-6, the utility model provides an art designing knife convenient to change blade, it includes casing 1, be provided with telescopic movable knife rest 2 in the casing 1, one side of movable knife rest 2 is provided with the hand push handle 3 integrative with movable knife rest 2, the spout 11 has been seted up on the casing 1, hand push handle 3 passes spout 11 and extends outside spout 11, the user can push hand push handle 3 slides in spout 11 to drive movable knife rest 2 and slide between first working position, second working position and third working position. The movable blade holder 2 is rotatably provided with a blade locking member 4, and a locking block 43 is arranged on one side of the blade locking member 4 close to the blade 5, and the locking block 43 is suitable for being matched with a locking groove 51 on the back of the blade 5 so as to lock the blade 5 in the movable blade holder 2. The blade locking member 4 can rotate relative to the movable tool rest 2, so that the blade locking member 4 can be rotated and switched between a locking state and an unlocking state, when the blade locking member 4 is in the locking state, the blade 5 is locked and fixed in the movable tool rest 2 by the blade locking member 4, and when the blade locking member 4 rotates to the unlocking state, the locking block 43 on the blade locking member 4 is separated from the locking groove 51 at the back of the blade 5, and a user can take out the blade 5 from the movable tool rest 2 for replacement.

The side of the blade locking member 4, which is close to the housing 1, is provided with a boss 44, and the boss 44 is adapted to be in fit and abutting contact with the limiting portion 12 on the housing 1, so that the blade locking member 4 can rotate from the locked state to the unlocked state. Specifically, the first end 41 of the blade locking member 4 is provided with a locking block 43, the second end 42 of the blade locking member 4 is provided with a boss 44, when the movable blade holder 2 slides to the third working position, the boss 44 is abutted against the limiting part 12 on the shell 1, the limiting part 12 applies a force to the boss 44 to move towards the inside of the movable blade holder 2, the boss 44 moves towards the inside of the movable blade holder 2 under the action of the force, the locking block 43 moves towards the outside of the movable blade holder 2, the locking block 43 is disengaged from the locking groove 51 at the back of the blade 5, the blade locking member 4 rotates to an unlocking state, after the blade 5 loses the locking fixation of the blade locking member 4, the blade 5 can freely move in the movable blade holder 2, and a user can easily take out the blade 5 from the movable blade holder 2 to replace the blade 5.

In this embodiment, the housing 1 is further provided with a yielding space 13, the yielding space 13 is disposed on one side of the limiting portion 12, and when the blade locking member 4 rotates to the unlocking state, the first end 41 of the blade locking member 4 can be accommodated in the yielding space 13, so that the blade locking member 4 and the housing 1 are prevented from interfering, and the blade locking member 4 cannot rotate to the unlocking state.

Still be provided with first piece that resets 6 between blade retaining member 4 and the movable knife rest 2, set up a fixed chamber 21 on the movable knife rest 2, fixed chamber 21 is cylindrically, the fixed intracavity 21 that sets up of one end of first piece that resets 6 is fixed, the other end butt of first piece that resets 6 is on blade retaining member 4, first piece that resets 6 can continuously exert to the pivoted effort of locking state to blade retaining member 4, with behind the separation of boss 44 on blade retaining member 4 and spacing portion 12 on casing 1, blade retaining member 4 can reset to locking state, fix blade 5 in movable knife rest 2. The first restoring member 6 may be any material having elastic energy storage, such as an elastic reed, elastic rubber, or the like. In this embodiment, the first reset member 6 is a compression spring, when the user pushes the handle 3 to drive the movable tool rest 2 to slide to the third working position, the movable tool rest 2 moves towards the outside of the housing 1, the boss 44 on the blade locking member 4 abuts against the limit portion 12 on the housing 1, the blade locking member 4 rotates to the unlocking state, the compression spring is compressed and deformed, when the user pushes the handle 3 to drive the movable tool rest 2 to slide to the first working position or the second working position, the movable tool rest 2 contracts towards the inside of the housing 1, the boss 44 on the blade locking member 4 is separated from the limit portion 12 on the housing 1, the acting force of the limit portion 12 on the compression spring is removed, the compression spring recovers the deformation, and then the blade locking member 4 is pushed to the locking state, the locking block 43 is matched with the locking groove 51 on the back of the blade 5 again, and locking fixation of the blade 5 is achieved.

As shown in fig. 7, in this embodiment, a second restoring member 7 is further disposed between the movable blade holder 2 and the housing 1, and the second restoring member 7 is adapted to continuously apply a force for retracting the movable blade holder 2 toward the inside of the housing 1. The shell 1 is provided with the fixed column 14, one end of the second reset piece 7 is connected to the fixed column 14, when the top plate 15 and the bottom plate 16 of the shell 1 are spliced together, two ends of the fixed column 14 are respectively connected with the top plate 15 and the bottom plate 16, and the second reset piece 7 can be prevented from falling off from the fixed column 14. The movable blade holder 2 is provided with a corresponding hook 22, the other end of the second reset element 7 is connected to the hook 22, and the second reset element 7 is suitable for applying a force continuously moving towards the first working position to the movable blade holder 2. Specifically, the second reset piece 7 is an extension spring, when the movable knife rest 2 moves to the second working position or the third working position under the drive of the hand push handle 3, the end part of the movable knife rest 2 extends to the outside of the shell 1, the distance between the hook 22 and the fixed column 14 is prolonged, the extension spring is stretched and deformed at the moment, after the user releases the hand push handle 3, the extension spring resumes deformation to drive the movable knife rest 2 to move to the first working position, and the blade 5 on the movable knife rest 2 is retracted into the shell 1. In addition, the second reset piece 7 can prevent the movable knife rest 2 from sliding out of the shell 1 to cut the fingers of the user.

As shown in fig. 8-11, the housing 1 of the utility knife of the present application is further provided with a mounting groove 17, a locking push button 8 is slidably disposed in the mounting groove 17, the locking push button 8 is slidably disposed between a limiting position and a replacing position, a first limiting groove 171 and a second limiting groove 172 are disposed on one side of the mounting groove 17, and a limiting projection 81 matched with the first limiting groove 171 and the second limiting groove 172 is disposed on the locking push button 8, so that the locking push button 8 is limited in the limiting position or the replacing position when the external force does not exceed a preset value, and the limiting projection 81 is matched with the first limiting groove 171 when the locking push button 8 is in the limiting position, and the limiting projection 81 is matched with the second limiting groove 172 when the locking push button 8 is in the replacing position.

In addition, the movable knife rest 2 is provided with a first clamping block 23, the lower end of the locking push button 8 is provided with a second clamping block 82 matched with the first clamping block 23, and when the locking push button 8 is in the limiting position, the second clamping block 82 is suitable for being matched with the first clamping block 23 in a clamping way so as to limit the movable knife rest 2 to slide from the second working position to the third working position. Specifically, when the locking push button 8 is at the limiting position, the movable tool rest 2 slides from the first working position to the second working position under the drive of the hand push handle 3, the second clamping block 82 on the locking push button 8 is positioned on the sliding route of the first clamping block 23, the second clamping block 82 is abutted with the first clamping block 23, and the first clamping block 23 is blocked from sliding further, that is, the user cannot push the hand push handle 3 further to slide the movable tool rest 2 to the third working position, and at this time, the movable tool rest 2 can only slide between the first working position and the second working position; when the locking push button 8 is in the replacement position, the movable knife rest 2 slides from the first working position to the second working position under the drive of the hand push handle 3, the second clamping block 82 is not on the sliding route of the first clamping block 23, and the first clamping block 23 cannot be blocked from further sliding, so that the movable knife rest 2 can move from the second working position to the third working position under the drive of the hand push handle 3, the blade locking piece 4 rotates to the unlocking state, and a user can replace the blade 5 in the movable knife rest 2.

Under the condition that the user does not toggle the locking push button 8 to slide the locking push button to the replacement position, the movable knife rest 2 cannot slide from the second working position to the third working position under the drive of the hand push handle 3, that is, when the locking push button 8 is in the limiting position, the user cannot push the hand push handle 3 to slide the movable knife rest 2 to the third working position, and the knife blade 5 in the movable knife rest 2 cannot be replaced. The setting of locking push button 8 can avoid the user to slide movable knife rest 2 to the third working position in the use, and the maloperation for blade 5 loses the locking of blade retaining member 4, drops from movable knife rest 2, can't normal use.

The tail part of the shell 1 is also provided with a hanging hole 9 for hanging, and a user can hang the art designing knife to a wall, a container and other places through the hanging hole 9, so that the art designing knife is convenient to take.

When the movable knife rest 2 is in the first working position, the movable knife rest 2 and the knife blade 5 are contained in the shell 1 under the action of the second reset piece 7, and cannot slide out of the shell 1 due to self gravity when in hanging placement, so that the knife blade 5 can be prevented from scratching fingers of a user; when the movable knife rest 2 slides from the first working position to the second working position under the drive of the hand push handle 3, the movable knife rest 2 and the blade 5 extend out of the shell 1, a user can operate the art designing knife to cut an article, and after the user releases the hand push handle 3, the movable knife rest 2 and the blade 5 automatically retract into the shell 1 under the action of the second reset piece 7, so that the situation that fingers of the user are scratched due to the fact that the blade 5 is not retracted in time after the art designing knife is used is avoided; when the movable knife rest 2 slides to the third working position from the second working position under the drive of the hand push handle 3, the movable knife rest 2 and the knife blade 5 further extend to the outside of the shell 1, the knife blade locking piece 4 rotates to an unlocking state, the knife blade 5 is in a free state after losing the fixation of the knife blade locking piece 4, and a user can easily take out the knife blade 5 from the movable knife rest 2 for replacement.

To sum up, according to the utility knife convenient for replacing the blade, when the blade 5 is replaced, no tool is needed, only the locking push button 8 is required to be slid to the replacing position, the limit of the locking push button 8 to the movable knife rest 2 is released, the hand push handle 3 is pushed to slide the movable knife rest 2 to the third working position, the blade locking member 4 is rotated to the unlocking state, the locking block 43 on the blade locking member 4 is disengaged from the locking groove 51 on the back of the blade 5, the blade 5 is in the state capable of being disengaged from the movable knife rest 2, and at the moment, a user can easily withdraw the blade 5 to replace and insert a new blade 5. After the new blade 5 is replaced, the user releases the hand push handle 3, the movable knife rest 2 is reset to the first working position under the action of the second reset piece 7, and then the locking push button 8 is slid to the working position, so that the utility knife can be normally used. Namely, when the movable tool rest 2 is in the first working position, the blade locking piece 4 is in a locking state, and the blade 5 is locked and fixed in the movable tool rest 2; when the movable tool rest 2 is in the second working position, the blade locking piece 4 is in a locking state, and the blade 5 is locked and fixed in the movable tool rest 2; when the movable blade holder 2 is in the third working position, the blade locking member 4 is in an unlocked state, and the blade 5 can be taken out from the movable blade holder 2.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides an art designing sword convenient to change blade, includes the casing, be provided with telescopic movable knife rest in the casing, detachably is provided with the blade on the movable knife rest, movable knife rest can slide between first working position, second working position and third working position, its characterized in that, rotationally be provided with the blade retaining member on the movable knife rest, the blade retaining member is used for with the blade locking is in on the movable knife rest, be provided with the boss on the blade retaining member, be provided with on the casing with boss complex spacing portion, movable knife rest is in first working position, the blade is located in the casing just the blade retaining member is in the locking state, movable knife rest is in the second working position, the blade is removed outside the casing just the blade retaining member is in the locking state, when movable knife rest slides to the third working position, the blade is removed outside the casing, the boss with spacing portion butt for the blade retaining member is rotated to the unblock state by the locking state, the blade can lose the blade locking state to the user can change the blade.

2. The utility knife of claim 1, wherein the blade locking member is provided with locking blocks, the locking blocks and the boss are respectively provided at both ends of the blade locking member, the back of the blade is provided with corresponding locking grooves, and when the blade locking member is in a locked state, the locking blocks are matched with the locking grooves to fix the blade on the movable knife rest.

3. The utility knife of claim 2, wherein a first reset member is disposed between the blade locking member and the movable blade holder, the first reset member being adapted to apply a force to the blade locking member to rotate toward the locked state continuously, such that the blade locking member is capable of being reset to the locked state under the drive of the first reset member after the boss is separated from the limiting portion.

4. A utility knife for facilitating blade replacement as in claim 3 wherein a relief space is provided in the housing, the relief space being adapted to receive the blade lock when the blade lock is in the unlocked condition.

5. The utility knife of claim 1, wherein a second reset member is further disposed between the movable knife rest and the housing, one end of the second reset member is fixedly disposed on the hook of the movable knife rest, the other end of the second reset member is fixedly disposed on the fixed post of the housing, and the second reset member is adapted to continuously apply a force to retract into the housing to the movable knife rest.

6. The utility knife of claim 1, wherein the movable knife rest is further provided with a push handle, the push handle and the movable knife rest are of an integrated structure, and the push handle passes through a chute on the shell and extends out of the chute.

7. The utility knife of claim 1, wherein the housing further defines a mounting slot, a locking push button slidably disposed within the mounting slot, the locking push button being slidable between a limit position and a replacement position, the locking push button abutting the movable blade holder when the locking push button is in the limit position, the movable blade holder being limited to slide from the second operating position to the third operating position.

8. The utility knife of claim 7, wherein a first limit groove and a second limit groove are provided on one side of the mounting groove, and a limit projection is provided on the locking push button, the limit projection being adapted to cooperate with the first limit groove and the second limit groove to limit the locking push button in a limit position or a replacement position when the external force does not exceed a preset value.

9. An art designing knife for facilitating blade replacement as claimed in any one of claims 1 to 8, wherein the tail end of the housing is provided with a hanging hole.

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