Art knife

Abstract

The utility model provides an art knife which comprises an outer shell, a blade is arranged in the outer shell, a knife outlet push button is arranged on the outer shell, the knife outlet push button is connected with the blade and used for driving the blade to extend out of the outer shell or retract into the outer shell, and a knife locking push button sliding way opposite to the side wall of the blade is arranged on the outer shell. A knife locking push button is arranged on the knife locking push button slide way in a sliding connection mode, and the knife locking push button slides along the knife locking push button slide way and can lock or unlock the blade. According to the art knife, the knife locking push button capable of locking or unlocking the blade is arranged on the shell of the art knife, when the art knife is used, the knife locking push button can be pushed to lock the blade after the length of the blade extending out of the shell is adjusted, the blade cannot shake even if the blade is stressed, and stable operation can be achieved; when the art knife is not used, the knife locking push button is pushed to lock the blade, the blade retracting into the shell cannot extend out of the shell due to accidental operation, and the safety degree is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of stationery, more exactly relates to a designer's knife. BACKGROUND

[0002] The designer's knife is often used in daily life to shave pencil, cut adhesive tape, and disassemble express delivery, etc. The prior art designer's knife is usually composed of a handle and a blade, the blade can be extended and retracted in the handle, the blade is pushed out of the handle when used, and the blade is retracted into the handle after use.

[0003] The prior art designer's knife has a drawback that when it is used, the blade extended out of the handle will shake under force, which is particularly unfavorable for fine work; and when it is not used, the blade retracted into the handle can be extended out of the handle at any time due to accidental operation, which is very unsafe. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem of providing a designer's knife, when used, the blade extended out of the handle will not shake under force, and the operation is stable; when not used, the blade retracted into the handle will not be extended out of the handle due to accidental operation, and the safety degree is high.

[0005] The technical solution of the utility model is to provide a designer's knife, which comprises a shell, a blade arranged in the shell, a blade-out push button arranged on the shell and connected with the blade and used to drive the blade to extend out of the shell or retract into the shell, a blade-locking push button slide arranged on the shell and opposite to the side wall of the blade, and a blade-locking push button slidingly connected on the blade-locking push button slide and capable of locking or unlocking the blade by sliding along the blade-locking push button slide.

[0006] Compared with the prior art, the designer's knife has the following advantages: the blade-locking push button capable of locking or unlocking the blade is arranged, when the designer's knife is used, after adjusting the length of the blade extended out of the shell, the blade-locking push button is pushed to lock the blade, and the blade will not shake under force, and the operation is stable; when the designer's knife is not used, the blade-locking push button is pushed to lock the blade, and the blade retracted into the shell will not be extended out of the shell due to accidental operation, and the safety degree is high.

[0007] Preferably, the bottom of the blade-locking push button slide is provided with a first clamping piece, the first clamping piece is elastically arranged on the shell and opposite to the side wall of the blade; the blade-locking push button is capable of pressing down the first clamping piece until the first clamping piece is in contact with the blade by sliding along the blade-locking push button slide, and the blade-locking push button is capable of resetting the first clamping piece by reverse sliding. By this structure, the blade-locking push button presses the blade by pressing down the first clamping piece, the structure is simple, and the effect of locking the blade is good.

[0008] Preferably, the first clamping piece is integrally formed with the housing. In this way, the first clamping piece can be integrally formed with the housing during the manufacturing of the housing, thereby saving production cost.

[0009] Preferably, the housing is provided with a second clamping piece, the first clamping piece and the second clamping piece are respectively located on two sides of the blade and correspond to each other, and the blade is pressed against the second clamping piece when the first clamping piece is pressed against the blade. In this way, the range of pressing the first clamping piece by the lock button can be reduced, and the blade can be pressed.

[0010] Preferably, the second clamping piece is in a bent shape, one side of the second clamping piece is used for pressing against the blade, and the other side of the second clamping piece is used for supporting the second clamping piece to protrude outward. In this way, the structure of the second clamping piece is stable, and the area of the second clamping piece pressing against the blade is large enough.

[0011] Preferably, the housing is provided with an inner housing, the inner housing is provided with a blade sliding groove, the blade is arranged in the blade sliding groove and can move in the blade sliding groove to extend out of or retract into the housing, and the second clamping piece is integrally formed with the inner housing. In this way, the second clamping piece can be integrally formed with the inner housing during the manufacturing of the inner housing, thereby saving production cost, and the second clamping piece will not fall off from the inner housing.

[0012] Preferably, the two side walls of the lock button sliding channel are respectively provided with a lock button sliding groove, and the two sides of the lock button are respectively provided with a side protrusion, which is slidably inserted into the corresponding lock button sliding groove. In this way, the connection structure of the lock button and the lock button sliding channel is simple and easy to assemble, the side protrusion is slidably inserted into the lock button sliding groove, and the lock button will not be separated from the lock button sliding channel.

[0013] Preferably, the bottom of the lock button is provided with a lower protrusion, the top of the first clamping piece is provided with an upper protrusion, one side of the upper protrusion is provided with a guide slope, the lower protrusion can slide along the guide slope to the top of the upper protrusion when the lock button slides along the lock button sliding channel, and the first clamping piece rotates downward. In this way, the lock button can press the upper protrusion to press the blade by sliding forward along the lock button sliding channel, and the upper protrusion can be elastically reset by sliding backward along the lock button sliding channel, and the structure is simple, and the operation of locking and unlocking the blade is simple; the upper protrusion increases the thickness and strength of the part of the first clamping piece used for pressing the blade; the lower protrusion and the guide slope cooperate to make the lock button easily slide to the top of the upper protrusion, thereby avoiding jamming.

[0014] Preferably, the top of the upper protrusion is an inner concave surface. In this way, the lower protrusion at the bottom of the lock button is limited in the inner concave surface of the upper protrusion of the first clamping piece, and the lower protrusion and the upper protrusion are limited to each other, thereby avoiding the lock button from sliding down by itself due to the rebound of the first clamping piece.

[0015] Preferably, the lock-knife push button sliding channel is arranged obliquely and gradually extends into the interior of the shell; the lock-knife push button can slide forward along the lock-knife push button sliding channel until the front end of the lock-knife push button extends into the shell and presses the blade, and the lock-knife push button can retreat to make the front end of the lock-knife push button exit the shell and not press the blade. By adjusting the angle between the lock-knife push button sliding channel and the length direction of the shell, the front end of the lock-knife push button can be adjusted to extend into the shell and press the blade, and the structure is simple and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an exploded view of the stationery knife.

[0017] Figure 2 It is a cross-sectional structure schematic view of the blade head of the stationery knife of the embodiment 1 in the blade-unlocked state.

[0018] Figure 3 It is a cross-sectional structure schematic view of the blade head of the stationery knife of the embodiment 1 in the blade-locked state.

[0019] Figure 4 It is an exploded view of the cooperation structure of the shell and the lock-knife push button of the stationery knife of the embodiment 1.

[0020] Figure 5 It is a cross-sectional structure schematic view of the blade head of the stationery knife of the embodiment 2.

[0021] As shown in the figure: 1, the shell, 1-1, the knife-out push button sliding groove, 1-2, the lock-knife push button sliding channel, 1-3, the lock-knife push button sliding groove, 2, the tail plug, 3, the knife-out push button, 3-1, the knife connecting piece, 3-2, the knife connecting shaft, 3-3, the front limiting protruding block, 3-4, the rear limiting protruding block, 4, the lock-knife push button, 4-1, the lower protrusion, 4-2, the side protruding strip, 5, the blade, 6, the inner shell, 6-1, the rack, 6-2, the blade sliding groove, 7, the first clamping piece, 7-1, the upper protrusion, 7-2, the guide inclined surface, 8, the second clamping piece. DETAILED DESCRIPTION

[0022] In order to better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description is only a description of exemplary embodiments of the present application, and does not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0023] In the drawings, the thickness, size and shape of the objects have been slightly exaggerated for ease of illustration. The drawings are only examples and are not strictly drawn to scale.

[0024] It should also be understood that the words "comprise", "have", "contain", "including", when used in this specification, specify the presence of the stated features, integers, steps, operations, elements, and / or components but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Embodiment 1

[0025] As shown in Figure 1 The utility model discloses art designer's knife includes shell 1, inner shell 6, blade 5, knife push button 3 and lock knife push button 4, and one end of shell 1 is the knife outlet, and the other end is provided with tail plug 2;Inner shell 6 sets up in shell 1, and inner shell 6 is provided with blade sliding slot 6-2, and blade 5 sets up in blade sliding slot 6-2, and one side groove wall of blade sliding slot 6-2 is provided with rack 6-1;Shell 1 is provided with knife push button sliding slot 1-1, and knife push button 3 sets up on knife push button sliding slot 1-1, and knife push button 3 includes knife connecting piece 3-1, and knife connecting piece 3-1 sets up in blade sliding slot 6-2, and knife connecting piece 3-1 is provided with knife connecting shaft 3-2, and knife connecting shaft 3-2 is connected with blade 5, and knife connecting piece 3-1 is also provided with front limit protruding block 3-3 and rear limit protruding block 3-4, and the top of front limit protruding block 3-3 and rear limit protruding block 3-4 are convex curvature, and can be matched with rack 6-1 concave convex, and rack 6-1 is limited by front limit protruding block 3-3 and rear limit protruding block 3-4, thereby limiting knife push button 3 and blade 5, avoid the blade 5 to be forced to stretch when using.Sliding of front limit protruding block 3-3 and rear limit protruding block 3-4 on rack 6-1 can make blade 5 move along blade sliding slot 6-2 and extend outside shell 1 or retract in shell 1 along knife push button sliding slot 1-1.

[0026] Shell 1 is provided with lock knife push button sliding way 1-2 in the position adjacent to the knife outlet, and lock knife push button sliding way 1-2 is opposite to the side wall of blade 5, and lock knife push button 4 is embedded in lock knife push button sliding way 1-2 and is slidably connected with lock knife push button sliding way 1-2, as shown in Figure 4 The two side walls of lock knife push button sliding way 1-2 are provided with lock knife push button sliding slot 1-3, and the two sides of lock knife push button 4 are provided with side convex strip 4-2, and side convex strip 4-2 can be slidably inserted in corresponding lock knife push button sliding slot 1-3.

[0027] The bottom of the lock-knife push button 4 is opposite to the blade 5 and is provided with a lower protrusion 4-1. The bottom of the lock-knife push button sliding channel 1-2 is provided with a first clamping piece 7 which is in an integral structure with the outer shell 1, one end of the first clamping piece 7 is elastically connected with the outer shell 1, and the other end is free and opposite to the side wall of the blade 5 in space. The top of the free end of the first clamping piece 7 is provided with an upper protrusion 7-1, the top of the upper protrusion 7-1 is an inner concave curved surface, and the side of the upper protrusion 7-1 facing the lock-knife push button 4 is provided with a guide inclined surface 7-2.

[0028] The lock-knife push button 4 slides forward along the lock-knife push button sliding channel 1-2, the lower protrusion 4-1 slides along the guide inclined surface 7-2 to the top of the upper protrusion 7-1, so that the first clamping piece 7 rotates downward, that is, the lower protrusion 4-1 presses the free end of the first clamping piece 7 downward, and the free end of the first clamping piece 7 is in contact with the side wall of the blade 5. The lock-knife push button 4 reversely slides, the lower protrusion 4-1 slides off the top of the upper protrusion 7-1 along the guide inclined surface 7-2, that is, the lower protrusion 4-1 is separated from the free end of the first clamping piece 7, and the free end of the first clamping piece 7 is reset.

[0029] The inner shell 6 is provided with a protruding second clamping piece 8 which is in an integral structure with the inner shell 6. The second clamping piece 8 is in a bent shape, one side of the second clamping piece 8 protrudes to the direction of the blade 5 and is opposite to the free end of the first clamping piece 7 in space, and the other side is used for supporting the second clamping piece 8 to protrude outward. After the free end of the first clamping piece 7 is in contact with the side wall of the blade 5, the blade 5 can be pressed tightly on the second clamping piece 8, so as to lock the blade 5, as shown in Figure 3 . The reverse sliding of the lock-knife push button 4 releases the blade 5, as shown in Figure 2 .

[0030] In the embodiment, the structure of the knife push button 3 is not the invention point to be protected by the utility model, so other common structures in the prior art can be adopted, which does not limit the protection scope of the utility model.

[0031] In other embodiments, the first clamping piece 7 can be connected to the outer shell 1 instead of being in an integral structure with the outer shell 1. The second clamping piece 8 can also be connected to the inner shell 6 instead of being in an integral structure with the inner shell 6.

[0032] In other embodiments, the groove bottom of the blade sliding groove 6-2 can not be provided with the second clamping piece 8, and the free end of the first clamping piece 7 is in contact with the side wall of the blade 5 to directly press the blade 5 tightly in the blade sliding groove 6-2.

[0033] In other embodiments, the inner shell 6 can not be provided in the outer shell 1, the blade sliding groove 6-2 is directly provided on the outer shell 1, and the free end of the first clamping piece 7 is in contact with the side wall of the blade 5 to directly press the blade 5 tightly in the outer shell 1. Embodiment 2

[0034] AsFigure 5 The utility model discloses a stationery knife, as shown in the middle, the difference between the stationery knife of the embodiment and the embodiment 1 is that the lock knife push button slide 1-2 is arranged gradually and gradually stretches into the inside of the shell 1 to the oblique, the bottom of lock knife push button slide 1-2 is not provided with first clamping piece 7, and the front end of lock knife push button 4 can stretch into the shell 1 and press tightly with blade 5 when lock knife push button 4 slides forward along lock knife push button slide 1-2, so as to lock blade 5, and the front end of lock knife push button 4 can exit the shell 1 and release blade 5 when lock knife push button 4 retreats, so as to unlock blade 5.

[0035] The above is only the specific embodiment of the utility model, and is not used to limit the implementation range of the utility model; if the utility model is modified or replaced, without departing from the spirit and scope of the utility model, all should be covered in the protection scope of the utility model claim.

Claims

1. A utility knife, comprising a casing (1), a blade (5) disposed inside the casing (1), and a blade extension button (3) disposed on the casing (1), the blade extension button (3) being connected to the blade (5) and used to drive the blade (5) to extend out of the casing (1) or retract into the casing (1), characterized in that, The shell (1) is provided with a lock blade push button sliding channel (1-2) opposite to the side wall of the blade (5), and the lock blade push button sliding channel (1-2) is provided with a slidingly connected lock blade push button (4), and the lock blade push button (4) can lock or unlock the blade (5) by sliding along the lock blade push button sliding channel (1-2).

2. The utility knife of claim 1, wherein, The bottom of the lock blade push button sliding channel (1-2) is provided with a first clamping piece (7), which is elastically arranged on the shell (1) and opposite to the side wall of the blade (5); the lock blade push button (4) can press down the first clamping piece (7) by sliding along the lock blade push button sliding channel (1-2) until the first clamping piece (7) is in contact with the blade (5), and the lock blade push button (4) can reset the first clamping piece (7) by reversing sliding.

3. The utility knife of claim 2, wherein, The first clamping piece (7) and the shell (1) are an integral structure.

4. The utility knife of claim 2, wherein, The shell (1) is provided with a second clamping piece (8), and the first clamping piece (7) and the second clamping piece (8) are located on the two sides of the blade (5) and correspond to each other, and the blade (5) is pressed on the second clamping piece (8) when the first clamping piece (7) is in contact with the blade (5).

5. The utility knife of claim 4, wherein, The second clamping piece (8) is in a bent shape, one side of the second clamping piece (8) is used for pressing the blade (5), and the other side is used for supporting the second clamping piece (8) to protrude outward.

6. The utility knife of claim 4, wherein, The shell (1) is provided with an inner shell (6), and the inner shell (6) is provided with a blade sliding groove (6-2), and the blade (5) is arranged in the blade sliding groove (6-2) and can move in and out of the shell (1) along the blade sliding groove (6-2), and the second clamping piece (8) and the inner shell (6) are an integral structure.

7. The utility knife of claim 1, wherein, The two side walls of the lock blade push button sliding channel (1-2) are provided with lock blade push button sliding grooves (1-3), and the two sides of the lock blade push button (4) are provided with side protrusions (4-2), which can be slidably inserted into the corresponding lock blade push button sliding grooves (1-3).

8. The utility knife of claim 2, wherein, The bottom of the lock blade push button (4) is provided with a lower protrusion (4-1), the top of the first clamping piece (7) is provided with an upper protrusion (7-1), one side of the upper protrusion (7-1) is provided with a guide slope (7-2), and the lock blade push button (4) slides along the lock blade push button sliding channel (1-2), and the lower protrusion (4-1) can slide along the guide slope (7-2) to the top of the upper protrusion (7-1), so that the first clamping piece (7) rotates downward.

9. The utility knife of claim 8, wherein, The top of the upper protrusion (7-1) is an inner concave surface.

10. The utility knife of claim 1, wherein, The lock blade push button sliding channel (1-2) is obliquely arranged and gradually extends into the inside of the shell (1); the lock blade push button (4) can slide forward along the lock blade push button sliding channel (1-2) until the front end of the lock blade push button (4) extends into the shell (1) and is in contact with the blade (5), and the lock blade push button (4) can retreat to make the front end of the lock blade push button (4) exit the shell (1) and not in contact with the blade (5).

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