CN212352098U

CN212352098U - Art designing knife capable of automatically retracting knife

Info

Publication number: CN212352098U
Application number: CN201922428563.1U
Authority: CN
Inventors: 唐静
Original assignee: Chongqing Technology and Business Institute
Current assignee: Chongqing Technology and Business Institute
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-01-15
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an art designing knife capable of automatically retracting, relating to the field of art designing knives, and aiming at achieving the purpose, the technical proposal of the utility model comprises a knife shell, a tail cover, a blade and a sliding block; a limit gear, a controller, a battery, a starting switch and an electromagnetic assembly are arranged in the sliding block, and the battery, the starting switch and the coil cylinder are all electrically connected to the controller; after the starting switch is pressed down, the controller starts the coil drum, the coil drum pushes the lock pin to be meshed with the limiting gear, and after the coil drum is started for a set time period, the controller stops the coil drum; after the gear teeth of the limiting gear are separated from the lock pin, the blade is completely pulled into the cutter shell by the tension spring. The blade can be automatically pulled back into the shell when not used for a long time, and the problem that the blade is exposed outside for a long time to cause potential safety hazards is avoided.

Description

Art designing knife capable of automatically retracting knife

Technical Field

The utility model relates to an art designing sword that can contract sword automatically mainly relates to art designing sword field.

Background

The art designing knife is also commonly called as a graver or a wallpaper knife, is a knife for art and handicraft, is mainly used for cutting objects with soft texture, mainly consists of a plastic knife handle and a blade, and is of a drawing structure. Also have a small number for the metal handle of a knife, the blade is mostly the bevel connection, can follow the marking off rupture of blade with the blunt, appears new blade point, facilitates the use.

The blade can be kept in a pushed state after being pushed out usually, the blade of the utility knife is very sharp, the blade is pushed out of the knife handle when being used usually, and the blade is pushed back after being used.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to above prior art, the utility model provides a can contract art designer's sword automatically can realize when not using for a long time, in the automatic blade pull-back casing, avoid the blade to expose for a long time and externally cause the potential safety hazard.

In order to achieve the above purpose, the technical scheme of the utility model is that: comprises a knife shell, a tail cover, a blade and a sliding block; the cutter shell is in a long strip shape, a through groove is formed in the cutter shell along the length direction, the tail end of the through groove is clamped with the tail cover, a rack is arranged on one side wall of the through groove, the sliding block is in sliding fit in the through groove, and the sliding block is connected with the tail cover through a tension spring; the blade is assembled in the through groove, the tail part of the blade is detachably fixed with the sliding block, and the front part of the blade extends to the front part of the through groove; a limit gear, a controller, a battery, a starting switch and an electromagnetic assembly are arranged in the sliding block, the limit gear is rotationally matched in the sliding block, the gear teeth of the limit gear are meshed with the rack, the electromagnetic assembly comprises a coil cylinder, a lock pin and a reset spring, a pin cap is arranged at the tail part of the lock pin, the front end of the lock pin penetrates through the coil cylinder, the front end of the lock pin points to the gear teeth of the limit gear, the reset spring is sleeved on the lock pin, two ends of the reset spring respectively abut against the pin cap and the coil cylinder, and the battery, the starting switch and the coil cylinder are all electrically connected to the controller; after the starting switch is pressed down, the controller starts the coil drum, the coil drum pushes the lock pin to be meshed with the limiting gear, and after the coil drum is started for a set time period, the controller stops the coil drum; after the gear teeth of the limiting gear are separated from the lock pin, the blade is completely pulled into the cutter shell by the tension spring.

The technical principle and the beneficial effects of the utility model are as follows:

the tail part of the blade is fixed on the sliding block, and the stretching of the blade can be controlled by pushing the sliding block;

the side wall of the sliding chute is provided with a rack which is meshed with a gear on the sliding block, and the gear rotates together when the sliding block slides;

according to the scheme, when the coil cylinder does not work, under the action of the reset spring, the front end of the lock pin is separated from the gear, namely the gear can freely rotate along with the rack, when the coil cylinder works through the starting switch, the coil cylinder generates magnetic force to push the lock pin to move towards the gear, the gear is clamped through the lock pin, the gear cannot rotate at the moment, the gear is meshed with the rack, so that the sliding block is locked relative to the rack, the sliding block is locked in the through groove, when the starting switch is pressed down, the control also starts countdown, when the countdown is finished, the controller turns off the coil cylinder, the magnetic force of the coil cylinder disappears, under the action of the spring, the lock pin is separated from the gear, and because the lock pin does not clamp the gear, the tension spring drives the blade to be pulled back into the shell;

when the magnetic timing controller is used, the blade stretching position is adjusted through the sliding block, when the blade stretches to a proper position, the starting switch is pressed down, the coil cylinder generates magnetic force, the locking pin is pushed to abut against the gear, the sliding block is locked in the shell and cannot freely slide in the through groove, the sliding block and the blade are prevented from being pulled back into the shell through the tension spring, the controller starts to count down at the same time, when the timing is finished, the coil cylinder of the controller is closed, the magnetic force is small, under the action of the reset spring, the locking pin is separated from the gear, the gear is unlocked, the sliding block can freely slide in the through groove, and under the action of the tension spring, the sliding block drives the blade to retract into.

Can regularly pull back the casing with the blade through above-mentioned scheme, push out the casing again with it if need continue to use, can realize when not using for a long time, in the automatic casing of pulling back the blade, avoid the blade to expose for a long time and cause the potential safety hazard in the outside.

Preferably, the front portion of sliding block corresponds the afterbody of blade is equipped with presss from both sides the groove, one of them side of pressing from both sides the groove corresponds the blade be equipped with spacing post, can be very stable fixed with the afterbody of blade and sliding block through setting up the clamp groove, it is also very convenient to dismantle simultaneously.

Preferably, the front end of the locking pin is pointed to effectively engage with the teeth of the gear.

Preferably, the controller adopts an AT89C51 singlechip, so that the countdown function can be effectively and conveniently realized.

Preferably, with limit gear is with one side still normal running fit has a balance gear on the sliding block, balance gear with the rack through set up the cooperation around balance gear and the limit gear, can be so that the sliding block more stable slip in logical inslot.

Preferably, the upper surface of sliding block is equipped with a plurality of anti-skidding sand grips, and the promotion sliding block that can be very convenient through anti-skidding sand grip slides in leading to the groove.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only four of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the fitting of the internal components of the embodiment of the present invention;

fig. 2 is a schematic external structural diagram of an embodiment of the present invention;

FIG. 3 is a side view of a slider block according to an embodiment of the present invention;

fig. 4 is a relationship diagram of an electromagnetic assembly according to an embodiment of the present invention.

The cutting tool comprises a tool case 1, a blade 2, a sliding block 3, a tail cover 4, a tension spring 5, a rack 6, a battery 7, a controller 8, a limit gear 9, a lock pin 10, a coil cylinder 11, a return spring 12, a pin cap 13, a starting switch 14, a balance gear 15, an anti-skid convex strip 16, a clamping groove 17 and a limit column 18.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

As shown in fig. 1, the embodiment of the present invention includes a knife housing 1, a tail cap 4, a blade 2, and a sliding block 3.

The sword shell 1 is rectangular form, sword shell 1 is equipped with logical groove along length direction, the tail end joint that leads to the groove has tail-hood 4, one of them lateral wall that leads to the groove is equipped with rack 6, sliding block 3 sliding fit in lead to the inslot, the upper surface of sliding block 3 is equipped with a plurality of anti-skidding sand grips 16, and the promotion sliding block 3 that can be very convenient through anti-skidding sand grip 16 slides in leading to the inslot. The sliding block 3 is connected with the tail cover 4 through a tension spring 5.

The blade 2 is assembled in the through groove, the tail of the blade 2 is detachably fixed with the sliding block 3, the front portion of the sliding block 3 corresponds to the tail of the blade 2 and is provided with a clamping groove 17, one side of the clamping groove 17 corresponds to the limiting column 18 arranged on the blade 2, the tail of the blade 2 can be fixed with the sliding block 3 very stably through the clamping groove 17, and the detachment is also very convenient. The front of the blade 2 extends towards the front of the through slot.

The sliding block 3 is internally provided with a limit gear 9, a controller 8, a battery 7, a starting switch 14 and an electromagnetic assembly, the limit gear 9 is rotationally matched in the sliding block 3, the gear teeth of the limit gear 9 are meshed with the rack 6, the electromagnetic assembly comprises a coil cylinder 11, a lock pin 10 and a return spring 12, the tail part of the lock pin 10 is provided with a pin cap 13, the front end of the lock pin 10 penetrates through the coil cylinder 11, the front end of the lock pin 10 points to the gear teeth of the limit gear 9, and the front end of the lock pin 10 is arranged at a tip end so as to be effectively meshed with the gear teeth of the gear. The return spring 12 is sleeved on the lock pin 10, two ends of the return spring 12 respectively abut against the pin cap 13 and the coil cylinder, and the battery 7, the starting switch 14 and the coil cylinder 11 are all electrically connected to the controller 8.

The controller 8 adopts an AT89C51 singlechip, the function of countdown can be effectively and conveniently realized, and the realization of the countdown through the singlechip and the control of the power supply of the coil cylinder 11 is a conventional means in the prior art, so the description is omitted.

After the start switch 14 is pressed, the controller 8 starts the bobbin 11, the bobbin 11 pushes the lock pin 10 to engage with the limit gear 9, and after the bobbin 11 is started for a set period of time, the controller 8 stops the bobbin 11; after the gear teeth of the limit gear 9 are separated from the lock pin 10, the blade 2 is completely pulled into the cutter shell 1 by the tension spring 5.

The tail part of the blade 2 is fixed on the sliding block 3, and the stretching of the blade 2 can be controlled by pushing the sliding block 3;

the side wall of the sliding chute is provided with a rack 6, the rack 6 is meshed with a gear on the sliding block 3, and when the sliding block 3 slides, the gear also rotates together;

according to the scheme, when the coil cylinder 11 is not in work, under the action of the return spring 12, the front end of the lock pin 10 is separated from the gear, that is, the gear can rotate freely with the rack 6, when the coil bobbin 11 is operated by the start switch 14, the coil bobbin 11 generates magnetic force to push the lock pin 10 to move towards the gear, and the gear is locked by the lock pin 10, at this time, the gear cannot rotate, since the gear is engaged with the rack 6, the sliding block 3 will be locked with respect to the rack 6, the sliding block 3 is locked in the through slot, when the start switch 14 is pressed, the controller starts the countdown, and when the countdown is finished, the controller 8 turns off the bobbin 11, the magnetic force of the bobbin 11 disappears, under the action of the spring, the lock pin 10 is separated from the gear, and because the lock pin 10 does not clamp the gear, the tension spring 5 drives the sliding block 3 to pull the blade 2 back into the shell;

when the novel electric knife is used, the telescopic position of the blade 2 is adjusted through the sliding block 3, when the blade 2 stretches to a proper position, the starting switch 14 is pressed down, the coil cylinder 11 generates magnetic force, the locking pin 10 is pushed to abut against the gear, the sliding block 3 is locked in the shell, the sliding block 3 cannot slide freely in the through groove, the situation that the sliding block 3 and the blade 2 are pulled back into the shell through the tension spring 5 is avoided, the controller 8 starts counting down, when the counting is finished, the coil cylinder 11 is turned off by the controller 8, the magnetic force is small, under the action of the reset spring 12, the locking pin 10 is separated from the gear, the gear is unlocked, the sliding block 3 can slide freely in the through groove, and under the action of the tension spring 5, the sliding block 3 drives the blade.

Can regularly pull back the casing with blade 2 through above-mentioned scheme, push out the casing again with it if need continue to use, can realize when not using for a long time, in the automatic casing of pulling back blade 2, avoid blade 2 to expose for a long time and cause the potential safety hazard in the outside.

With limit gear 9 is with one side still normal running fit has balance gear 15 on the sliding block 3, balance gear 15 with rack 6 through setting up the cooperation around balance gear 15 and the limit gear 9, can be so that sliding block 3 is at logical inslot more stable slip.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility knife capable of automatically retracting is characterized by comprising a knife shell (1), a tail cover (4), a blade (2) and a sliding block (3);

the knife shell (1) is long-strip-shaped, a through groove is formed in the knife shell (1) along the length direction, the tail end of the through groove is clamped with the tail cover (4), a rack (6) is arranged on one side wall of the through groove, the sliding block (3) is in sliding fit in the through groove, and the sliding block (3) is connected with the tail cover (4) through a tension spring (5);

the blade (2) is assembled in the through groove, the tail part of the blade (2) is detachably fixed with the sliding block (3), and the front part of the blade (2) extends towards the front part of the through groove;

a limit gear (9), a controller (8), a battery (7), a starting switch (14) and an electromagnetic component are arranged in the sliding block (3), the limit gear (9) is rotationally matched in the sliding block (3), and the gear teeth of the limit gear (9) are meshed with the rack (6), the electromagnetic assembly comprises a coil cylinder (11), a lock pin (10) and a return spring (12), the tail part of the lock pin (10) is provided with a pin cap (13), the front end of the lock pin (10) penetrates through the coil cylinder (11), and the front end of the lock pin (10) points to the gear teeth of the limit gear (9), the return spring (12) is sleeved on the lock pin (10), two ends of the return spring (12) are respectively abutted against the pin cap (13) and the coil drum, the battery (7), the starting switch (14) and the coil drum (11) are all electrically connected to the controller (8);

after the starting switch (14) is pressed, the controller (8) starts the coil drum (11), the coil drum (11) pushes the lock pin (10) to be meshed with the limit gear (9), and after the coil drum (11) is started for a set time period, the controller (8) stops the coil drum (11); after the gear teeth of the limiting gear (9) are separated from the lock pin (10), the blade (2) is completely pulled into the cutter shell (1) by the tension spring (5).

2. The utility knife of claim 1, wherein: the front part of the sliding block (3) corresponds to the tail part of the blade (2) and is provided with a clamping groove (17), and one side of the clamping groove (17) corresponds to the blade (2) and is provided with a limiting column (18).

3. The utility knife of claim 1, wherein: the front end of the lock pin (10) is arranged at the tip.

4. The utility knife of claim 1, wherein: the controller (8) adopts an AT89C51 singlechip.

5. The utility knife of claim 1, wherein: and the sliding block (3) on the same side as the limiting gear (9) is also provided with a balance gear (15) in a rotating fit mode, and the balance gear (15) and the rack (6) are arranged.

6. The utility knife of claim 1, wherein: the upper surface of the sliding block (3) is provided with a plurality of anti-skid convex strips (16).