CN214055355U - Foldable cutter - Google Patents

Abstract

The utility model discloses a foldable cutter, including the knife shell, the knife rest, the blade, push-and-pull piece, linkage subassembly and reset assembly, the blade is installed on the knife rest, the knife shell passes through the connecting axle rotatable coupling with the knife rest, push-and-pull piece receives the external force effect and can take place the motion, makes the reset assembly can take place the deformation, and then makes linkage subassembly and cutter body frame transmission be connected, can make the knife rest rotate to the first position or be the second position around the connecting axle, can utilize a cutting edge of blade to carry out the cutting operation when the knife rest is in the first position, can utilize another cutting edge of blade to carry out the cutting operation when the knife rest is in the second position; or when the tool rest rotates to the third position around the connecting shaft, the tool rest can respectively utilize two cutting edges of the blade to perform cutting operation. The utility model discloses can reduce the number of times of trading the blade, be favorable to improving work efficiency and application range.

Description

Foldable cutter

Technical Field

The utility model relates to a cutter field especially relates to folded cascade cutter.

Background

The existing knife tools are generally fixed, foldable and telescopic in structure. However, in any of the above structures, the blade can be fixed at an angle relative to the housing for use. If all the cutting edges (generally 4 cutting edges) on the blade are used, the blade needs to be replaced for many times, a working position where the blade is worn quickly and needs to be replaced frequently is a very tedious process, a cutter shell needs to be frequently disassembled by using a tool to replace the blade, time and labor are consumed, and the more times of replacing the blade are, the more times of contacting the blade is represented, and the more easily the blade is damaged.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a foldable cutter can reduce the times of changing blades and is favorable for improving the working efficiency and the application range.

The purpose of the utility model is realized by adopting the following technical scheme:

the foldable cutter comprises a cutter shell, a cutter frame and a blade, wherein the blade is detachably arranged on the cutter frame, the cutter shell and the cutter frame are respectively provided with a connecting shaft hole, and the cutter shell and the cutter frame are rotatably connected by penetrating through the connecting shaft holes through connecting shafts; the foldable cutter further comprises a push-pull block, a linkage component and a reset component for resetting the push-pull block, the push-pull block can move under the action of external force, the reset component can deform, the linkage component is in transmission connection with the cutter frame, the cutter frame can rotate to a first position or a second position around a connecting shaft, one cutting edge of the cutter blade can be used for cutting when the cutter frame is at the first position, and the other cutting edge of the cutter blade can be used for cutting when the cutter frame is at the second position; or when the tool rest rotates to the third position around the connecting shaft, the tool rest can respectively utilize two cutting edges of the blade to perform cutting operation.

Further, when the tool rest is in the first position, the angle of an included angle a formed between the tool rest and the tool shell satisfies the relation: a is more than 0 and less than or equal to 180 degrees; when the tool rest is at the second position, the included angle b formed between the tool rest and the tool shell satisfies the relation: b is more than 180 degrees and less than 360 degrees; when the tool rest is in the third position, the angle of an included angle c formed between the tool rest and the tool housing is 180 degrees.

Further, the knife shell is provided with a containing cavity for containing the blade, the reset assembly is located in the containing cavity, one end of the reset assembly is connected with the linkage assembly, and the other end of the reset assembly is fixed on the knife shell.

Furthermore, a push-pull hole is formed in the cutter shell and communicated with the containing cavity, and the push-pull block is located in the containing cavity and penetrates through the push-pull hole.

Furthermore, the linkage assembly comprises a connecting rod and a rotating shaft, one end of the connecting rod is connected with the push-pull block and the reset assembly, the other end of the connecting rod is connected with the rotating shaft, a rotating groove is formed in the knife rest, and the rotating shaft penetrates through the rotating groove and can rotate in the rotating groove relative to the connecting shaft; the rotating shaft can rotate to the first positioning groove and is clamped with the first positioning groove, and the tool rest is locked at a first position; the rotating shaft can rotate to the second positioning groove and is clamped with the second positioning groove, so that the tool rest is locked at a second position; the rotating shaft can rotate to the third positioning groove and is clamped with the third positioning groove, so that the tool rest is locked at a third position; the rotation axis can rotate to the fourth constant head tank and with the fourth constant head tank joint, thereby enable the knife rest accomodate in accomodate the intracavity.

Further, the rotating groove is arc-shaped, and the connecting shaft is located on the inner side of the rotating groove.

Further, the return assembly is a spring.

Further, the cutter body comprises a cutter frame and a cutter blade, the cutter blade is arranged on the cutter frame, and the cutter frame is rotatably connected with the cutter shell.

Further, the blade is removably mounted to the blade holder by a coupling assembly.

Further, coupling assembling includes shell fragment and button, be equipped with the mounting groove that is used for fixed blade in the knife rest, the shell fragment is installed in the mounting groove for with the blade joint, be equipped with the card hole on the blade, the shell fragment pass the card hole and with card hole joint, be equipped with the mounting hole on the knife rest, mounting hole and mounting groove intercommunication, the button is located in the mounting hole and can be worn out the knife rest outside, the button be used for with the shell fragment butt.

Compared with the prior art, the beneficial effects of the utility model reside in that:

because the utility model discloses a folded cascade cutter has set up the second constant head tank in the swivelling chute, first constant head tank, the fourth constant head tank, the play sword angle that makes the blade can be a plurality of angles, and the blade can be at a plurality of angular locking position, thereby can be favorable to cutting the operation better, be favorable to enlarging its application range, can also be under the condition of not trading the blade of make full use of blade another side, to the worker's of the blade of frequent wearing and tearing, this will be favorable to improving the efficiency of work and be favorable to reducing the injury risk that the blade of trading brought many times. In addition, the blade passes through coupling assembling detachably and installs on the knife rest, need not the instrument when making dismouting blade, convenient and fast, and moreover, the blade is collapsible to be accomodate in the knife case, and the security is higher and conveniently carry.

Drawings

Fig. 1 is a schematic structural diagram of a foldable cutter in an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a foldable cutter in an embodiment of the present invention;

FIG. 3 is an exploded view of FIG. 2;

in the figure: 1. a knife housing; 2. a tool holder; 3. a blade; 4. a push-pull block; 5. pushing and pulling the hole; 6. a connecting rod; 7. a rotating shaft; 8. a rotating tank; 9. a first positioning groove; 10. a second positioning groove; 11. a fourth positioning groove; 12. a reset assembly; 13. a spring plate; 14. a button; 15. a clamping hole; 16. a connecting shaft; 17. a receiving cavity.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-3, embodiments of the present invention provide a foldable knife, specifically, a carpet knife, which can be used to cut carpets, paper, cloth, leather, etc. The folded cascade cutter of this embodiment, including sword shell 1, knife rest 2 and blade 3, 3 detachably of blade install on knife rest 2, be equipped with connecting axle 16 holes on sword shell 1 and the knife rest 2 respectively, sword shell 1 and knife rest 2 pass above-mentioned connecting axle 16 holes rotatable linking through connecting axle 16, the folded cascade cutter is still including push-and-pull piece 4, linkage assembly and the reset assembly 12 that is used for making push-and-pull piece 4 reset, linkage assembly is connected with 2 transmissions of knife rest, when push-and-pull piece 4 receives the exogenic action and takes place the motion, reset assembly 12 will take place deformation, linkage assembly will can drive knife rest 2 and rotate to the primary importance around connecting axle 16, and then make the angle that forms contained angle a between knife rest 2 and the sword shell 1 satisfy the relational expression: a is more than 0 and less than or equal to 180 degrees, the linkage assembly can also drive the tool rest 2 to rotate to a second position around the connecting shaft 16, so that the angle of an included angle b formed between the tool rest 2 and the tool shell 1 satisfies the relation: b is more than 180 degrees and less than 360 degrees; the linkage assembly can lock the knife rest 2 at the first position or the second position, one cutting edge of the blade 3 can be used for cutting when the knife rest 2 is at the first position, and the other cutting edge of the blade 3 can be used for cutting when the knife rest 2 is at the second position, so that the knife rest 2 extends out of the knife shell 1, the two cutting edges of the blade 3 exposed out of the knife rest 2 are fully utilized to realize effective cutting operation, the number of times of replacing the blade 3 is reduced, the working efficiency is high, and time and labor are saved; alternatively, when the tool holder 2 is rotated to the third position around the connecting shaft 16, the angle c formed between the tool holder 2 and the tool housing 1 is 180 °, so that the tool holder 2 can perform a cutting operation by using two cutting edges of the blade 3, respectively.

So, make blade 3 slope or both cutting operations in this embodiment relative sword shell 1, be favorable to improving this folded cascade cutter's application scope, make it can effectively cut different materials. When the push-pull block 4 moves to reset, the reset component 12 can restore the deformation, and the linkage component drives the knife rest 2 to rotate around the connecting shaft 16 to reset, so that the blade 3 is reset and effectively contained in the knife shell 1.

Specifically, the knife shell 1 is provided with a containing cavity 17 for containing the blade 3, the resetting component 12 is positioned in the containing cavity 17, one end of the resetting component 12 is connected with the linkage component, and the other end of the resetting component 12 is fixed on the knife shell 1.

It should be noted that, a push-pull hole 5 is formed in the cutter shell 1, the push-pull hole 5 is communicated with the accommodating cavity 17, and the push-pull block 4 is located in the accommodating cavity 17 and passes through the push-pull hole 5.

As a preferred embodiment in this embodiment, the linkage assembly includes a connecting rod 6 and a rotating shaft 7, one end of the connecting rod 6 is connected to the push-pull block 4 and the reset assembly 12, the other end of the connecting rod 6 is connected to the rotating shaft 7, a rotating slot 8 is formed in the tool rest 2, and the rotating shaft 7 passes through the rotating slot 8 and can rotate in the rotating slot 8 relative to the connecting shaft 16; be equipped with first constant head tank 9 on the swivelling chute 8, second constant head tank 10, third constant head tank and fourth constant head tank 11, rotation axis 7 can with first constant head tank 9 joint when knife rest 2 rotates to the primary importance, rotation axis 7 can with second constant head tank 10 joint when knife rest 2 rotates to the secondary importance, rotation axis 7 can with third constant head tank joint when knife rest 2 rotates to the tertiary importance, rotation axis 7 can rotate to fourth constant head tank 11 and with fourth constant head tank 11 joint, thereby enable knife rest 2 to accomodate in accomodating intracavity 17. In this embodiment, the angle of the included angle a satisfies the relation: a is more than 0 and less than 180 degrees, and the angle of the included angle b satisfies the relation: 180 < b < 360, preferably the angle of the included angle a also satisfies the relation: a is 360 ° -b, such as: the angle of angle a is 120 deg., the angle of angle c may be 240 deg., but is not limited thereto.

It should be noted that the rotary groove 8 is circular arc-shaped, and the connecting shaft 16 is located inside the rotary groove 8. More specifically, the second positioning groove 10, the first positioning groove 9, and the fourth positioning groove 11 are sequentially arranged in a staggered manner in the clockwise direction of the rotary groove 8.

Preferably, return assembly 12 is a spring.

In a more preferred embodiment, the blade 3 is removably mounted to the blade holder 2 by a coupling assembly.

Preferably, coupling assembling includes shell fragment 13 and button 14, is equipped with the mounting groove that is used for fixed blade 3 in the knife rest 2, and shell fragment 13 is installed in the mounting groove for with 3 joints of blade, be equipped with card hole 15 on the blade 3, shell fragment 13 pass card hole 15 and with card hole 15 joint, be equipped with the mounting hole on the knife rest 2, mounting hole and mounting groove intercommunication, button 14 locates in the mounting hole and can wear out the knife rest 2 outside, button 14 is used for with the butt of shell fragment 13. Thus, when the blade 3 needs to be pulled out, the button 14 is pressed first, the elastic sheet 13 is pressed to enable the protruding part at one end of the elastic sheet to deform and break away from the clamping connection, and the blade 3 can break away from the mounting groove at the moment, so that the blade 3 can be taken out. Similarly, when adorning blade 3, through pressing button 14, put into the mounting groove in the knife rest 2 with blade 3, loosen button 14 again, shell fragment 13 can kick-back to the normal position under its self elastic action, the bellying of one of shell fragment 13 can pass card hole 15 and realize the joint, thereby fix blade 3 in the mounting groove, blade 3 realizes effectively being connected with knife rest 2, can reach the effect of quick replacement blade 3 like this, and need not instrument cooperation dismouting.

In this embodiment, when the housing 1 is held, the housing 1 is held in the forward direction with the opening of the housing 17 facing downward, and the housing 1 is held in the reverse direction with the opening of the housing 17 facing upward. During the use, the knife case 1 is held to the positive direction, exert external force and promote push-and-pull piece 4 to the first position on push-and-pull hole 5 towards the direction that is close to connecting axle 16, the spring will be stretched this moment, push-and-pull piece 4 drives rotation axis 7 through connecting rod 6 and rotates clockwise in swivelling chute 8 relative to connecting axle 16, make rotation axis 7 rotate clockwise to first constant head tank 9 relative to connecting axle 16, and make rotation axis 7 and first constant head tank 9 joint, and then can make knife rest 2 stretch out the shell outside and toward the direction of keeping away from knife case 1 and rotate to the first position, form contained angle a between knife rest 2 and the knife case 1 this moment, knife rest 2 is locked in this position, can utilize blade 3 to expose in the operation of cutting of two cutting edges of knife rest 2 this moment, thereby realize effectual cutting operation.

Further, an external force can be applied to push the push-pull block 4 to a second position on the push-pull hole 5 continuously in a direction close to the connecting shaft 16, at the moment, the spring is stretched, the push-pull block 4 drives the rotating shaft 7 to rotate clockwise relative to the connecting shaft 16 in the rotating groove 8 through the connecting rod 6, so that the rotating shaft 7 rotates clockwise relative to the connecting shaft 16 to the second positioning groove 10, and the rotating shaft 7 is clamped with the second positioning groove 10, further the knife rest 2 can extend out of the outer shell and rotate to the second position in a direction far away from the knife shell 1, an included angle b is formed between the knife rest 2 and the knife shell 1 at the moment, the knife rest 2 is locked at the position and is reversely held on the knife shell 1, at the moment, the other knife edge of the blade 3 exposed out of the two knife edges of the knife rest 2 can be used for cutting, and effective cutting operation is achieved.

Certainly, according to actual needs, an external force can be applied to push the push-pull block 4 to a third position on the push-pull hole 5 in a direction close to the connecting shaft 16, at the moment, the spring is stretched, the push-pull block 4 drives the rotating shaft 7 to rotate counterclockwise relative to the connecting shaft 16 in the rotating groove 8 through the connecting rod 6, so that the rotating shaft 7 rotates counterclockwise to a third positioning groove relative to the connecting shaft 16, and the rotating shaft 7 is clamped with the third positioning groove, further, the knife rest 2 can extend out of the outer shell and rotate to the third position in a direction far away from the knife shell 1, at the moment, an included angle c is formed between the knife rest 2 and the knife shell 1, namely, the knife rest 2 and the knife shell are located on the same straight line, the knife rest 2 is locked at the position, at the moment, the knife shell 1 can utilize the blade 3 exposed out of the two cutting edges of the knife rest 2 to perform cutting operation by sequentially holding the knife shell 1 in the forward direction and the reverse direction, and accordingly effective cutting operation is achieved.

When blade 3 needs to be accomodate, exert external force and promote push-and-pull piece 4 to the fourth position on push-and-pull hole 5 towards the direction that is close to connecting axle 16, the spring will be stretched this moment, push-and-pull piece 4 drives rotation axis 7 through connecting rod 6 and rotates clockwise relatively to connecting axle 16 in swivelling chute 8, make rotation axis 7 rotate clockwise relatively to connecting axle 16 to fourth constant head tank 11, and make rotation axis 7 and fourth constant head tank 11 joint, reset after the spring is stretched to the biggest, make push-and-pull piece 4 reset, and then can make knife rest 2 toward the orientation that is close to knife rest 1 rotate in accomodating chamber 17 of knife rest 1, knife rest 2 is locked in this position, thereby make blade 3 effectively accomodate in knife rest 1, the security is higher and conveniently carry.

Because the folded cascade cutter of this embodiment has set up second constant head tank 10 in swivelling chute 8, first constant head tank 9, fourth constant head tank 11, the play sword angle that makes blade 3 can be a plurality of angles, and blade 3 can lock the location in a plurality of angles, thereby can be favorable to cutting the operation better, be favorable to enlarging its application range, can also be under the condition of not trading blade 3 the blade of the 3 another sides of make full use of blade, to the work style of blade 3 of frequent wear, this will be favorable to improving the efficiency of work and be favorable to reducing the injury risk that blade 3 brought many times. In addition, blade 3 passes through coupling assembling detachably and installs on knife rest 2, need not the instrument when making dismouting blade 3, convenient and fast, and moreover, blade 3 is collapsible to be accomodate in knife case 1, and the security is higher and conveniently carry.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (9)

1. Folded cascade cutter, its characterized in that: the multifunctional knife comprises a knife shell, a knife rest and a blade, wherein the blade is detachably arranged on the knife rest, the knife shell and the knife rest are respectively provided with a connecting shaft hole, and the knife shell and the knife rest are rotatably connected by penetrating through the connecting shaft holes through connecting shafts;

the foldable cutter further comprises a push-pull block, a linkage component and a reset component for resetting the push-pull block, the push-pull block can move under the action of external force, the reset component can deform, the linkage component is in transmission connection with the cutter frame, the cutter frame can rotate to a first position or a second position around a connecting shaft, one cutting edge of the cutter blade can be used for cutting when the cutter frame is at the first position, and the other cutting edge of the cutter blade can be used for cutting when the cutter frame is at the second position; or when the tool rest rotates to the third position around the connecting shaft, the tool rest can respectively utilize two cutting edges of the blade to perform cutting operation.

2. The foldable knife of claim 1, wherein: when the tool rest is at the first position, the angle of an included angle a formed between the tool rest and the tool shell satisfies the relation: a is more than 0 and less than 180 degrees; when the tool rest is at the second position, the included angle b formed between the tool rest and the tool shell satisfies the relation: b is more than 180 degrees and less than 360 degrees; when the tool rest is in the third position, the angle of an included angle c formed between the tool rest and the tool housing is 180 degrees.

3. Foldable knife according to claim 1 or 2, characterized in that: the knife shell is provided with a containing cavity for containing the blade, the reset assembly is located in the containing cavity, one end of the reset assembly is connected with the linkage assembly, and the other end of the reset assembly is fixed on the knife shell.

4. The foldable knife of claim 3, wherein: the tool case is provided with a push-pull hole, the push-pull hole is communicated with the storage cavity, and the push-pull block is located in the storage cavity and penetrates through the push-pull hole.

5. The foldable knife of claim 4, wherein: the linkage assembly comprises a connecting rod and a rotating shaft, one end of the connecting rod is connected with the push-pull block and the reset assembly, the other end of the connecting rod is connected with the rotating shaft, a rotating groove is formed in the knife rest, and the rotating shaft penetrates through the rotating groove and can rotate in the rotating groove relative to the connecting shaft; the rotating shaft can rotate to the first positioning groove and is clamped with the first positioning groove, and the tool rest is locked at a first position; the rotating shaft can rotate to the second positioning groove and is clamped with the second positioning groove, so that the tool rest is locked at a second position; the rotating shaft can rotate to the third positioning groove and is clamped with the third positioning groove, so that the tool rest is locked at a third position; the rotation axis can rotate to the fourth constant head tank and with the fourth constant head tank joint, thereby enable the knife rest accomodate in accomodate the intracavity.

6. The foldable knife of claim 5, wherein: the rotating groove is arc-shaped, and the connecting shaft is positioned on the inner side of the rotating groove.

7. The foldable knife of claim 1, wherein: the reset component is a spring.

8. The foldable knife of claim 1, wherein: the blade is detachably mounted on the blade holder by a connecting assembly.

9. The foldable knife of claim 8, wherein: the connecting assembly comprises an elastic sheet and a button, a mounting groove for fixing the blade is formed in the tool rest, the elastic sheet is mounted in the mounting groove and is connected with the blade in a clamped mode, a clamping hole is formed in the blade, the elastic sheet penetrates through the clamping hole and is connected with the clamping hole in a clamped mode, a mounting hole is formed in the tool rest and is communicated with the mounting groove, the button is arranged in the mounting hole and can penetrate out of the tool rest, and the button is used for being abutted to the elastic sheet.

Images