CN210361408U - Cutter capable of automatically retracting blade - Google Patents

Abstract

The utility model discloses a cutter capable of automatically retracting blades, which comprises an installation seat and a sliding device, wherein the installation seat is provided with a chute, the chute is a sliding guide rail of the sliding device, and the sliding device is provided with a first positioning part; one end of the mounting seat is a cutter outlet end and is provided with a cutter outlet; the other end of the mounting seat is a positioning end and is provided with a second positioning part; the sliding device is characterized by further comprising an elastic piece, wherein two ends of the elastic piece are respectively connected with a second positioning position on the sliding device and the second positioning position, and the length of the elastic piece in a natural state is smaller than the distance between the first positioning position and the second positioning position. The cutter with the automatically retractable blade has the advantages that the blade can be automatically retracted after being used, accidental injury caused by forgetting to retract the blade by a user is avoided, the structure is simple, the size is small, and the operation is convenient.

Description

Cutter capable of automatically retracting blade

Technical Field

The utility model belongs to the technical field of the cutter and specifically relates to a but cutter of automatic retraction blade.

Background

A utility knife is a commonly used hand tool that can be used to cut items such as wood, paper, leather, plastic sheets, etc. The utility knife generally has a mounting seat for accommodating the blade, an opening is arranged on the mounting seat, and a push button is arranged through the opening and used for moving the blade. When the cutting knife needs to be used, the blade is moved out of the mounting seat through the blade moving and locking mechanism, and the blade part exposed out of the mounting seat is used for cutting; after the use, the blade is moved and the locking mechanism moves the blade into the mounting seat, so that accidental injury caused by the fact that the blade is exposed out of the mounting seat is avoided, but the blade is forgotten to be taken back after the blade is used sometimes, and the sharpness of the blade for art designing is high, so that a user is easy to hurt. In order to reduce the situation, blades of some art designing tools can automatically retract, however, in order to achieve a better retraction effect, the structure of the tool is generally complex, the size is larger, the tool is not convenient to hold by hand for use, the retraction action is complex, and the tool is not suitable for the situation that the art designing tools need to be held by hand for rapid and repeated operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cutter of the blade that can contract automatically to the problem that exists among the above-mentioned background art, its blade can contract automatically after using, avoids the user to forget the accidental injury that the blade caused, and simple structure is small, the operation of being convenient for.

In order to achieve the above purpose, the technical scheme of the utility model has:

a cutter capable of automatically retracting a blade comprises a mounting seat and a sliding device, wherein a sliding groove is formed in the mounting seat, the sliding groove is a sliding guide rail of the sliding device, and a first positioning part is arranged on the sliding device; one end of the mounting seat is a cutter outlet end and is provided with a cutter outlet; the other end of the mounting seat is a positioning end and is provided with a second positioning part; the sliding device is characterized by further comprising an elastic piece, wherein two ends of the elastic piece are respectively connected with a second positioning position on the sliding device and the second positioning position, and the length of the elastic piece in a natural state is smaller than the distance between the first positioning position and the second positioning position.

Further, the inside activity chamber that is equipped with of mount pad, the activity chamber extends to the location end, the opening size of location end with slider matches, still seted up fixed mouthful on the mount pad of location end, the one end of elastic component is fixed in on the fixed mouthful.

Furthermore, the opening direction of the fixing opening is consistent with the sliding direction of the sliding device, and the elastic piece is hung on the fixing opening.

And furthermore, one end of the sliding device, which faces the positioning end, is also provided with a hook piece, the hook piece is the second positioning part, and the other end of the elastic piece is hung and fixed on the hook piece.

Still further, the slider still is equipped with circular arch towards the one end of going out the edge of a knife, circular arch matches with the mounting hole on the blade.

Still further, the spout includes sliding port and fender wall, sliding port be the bar and communicate the external world with the activity chamber, keep off the wall and be located sliding port both sides, connect in the lateral wall of mount pad.

Furthermore, the sliding device comprises an inner sliding limiting part, a connecting part and a pushing part, the inner sliding limiting part is positioned in the movable cavity, the width of the inner sliding limiting part is greater than that of the sliding opening, and two sides of the inner sliding limiting part are abutted against the inner side wall of the mounting seat and the lower surface of the blocking wall; the connecting part is connected to the upper surface of the inner sliding limiting part and extends out of the sliding opening; the pushing portion is connected to the upper portion of the connecting portion, and the width of the pushing portion is larger than that of the sliding opening and abuts against the upper surface of the blocking wall.

Still further, the first positioning part is arranged at a position where the inner sliding limiting part faces the positioning end.

Still further, the elastic member is a spring.

Still further, still be equipped with the back lid, back lid detachably lid is located the location end, will second location department lid closes in.

The utility model discloses a but cutter of automatic retraction blade compares with prior art and has following technological effect:

the structure is simple, the volume is small, and the operation is convenient; the cutter is convenient to take out and the blade can be quickly and automatically retracted. Different from the traditional art knife type cutter, the sliding device in the scheme can slide smoothly in the sliding groove, so that the inconvenience brought to cutter discharging by wavy clamping positions is reduced, and the structure and the volume of the cutter are simplified; simultaneously owing to do not have the blockking of wave screens, after the elastic component is elongated in the play sword, the user just can be automatically with in the blade pull back the mount pad under the elastic force effect of elastic component after the loose hand, need not the staff and operate once more, the using-way is simple and clear rapidly, does not have complicacy and need use the operation of great strength to the accidental injury that causes when having avoided ingeniously because the user forgets to withdraw the cutter, it is safe high-efficient more.

Drawings

Fig. 1 is an exploded view of a first angle of a cutting tool with an automatically retractable blade according to the present invention;

FIG. 2 is an exploded view of a second angle of the cutting tool of an automatically retractable blade according to the present invention;

fig. 3 is a schematic structural view of an automatically retractable blade according to the present invention;

fig. 4 is a perspective view of the automatically retractable blade of the present invention.

Detailed Description

The utility model discloses a cutter of automatically retractable blade is explained with the attached drawing, can know from the figure:

the cutter capable of automatically retracting the blade comprises an installation seat 1 and a sliding device, wherein a sliding groove is formed in the installation seat 1, the sliding groove is a sliding guide rail of the sliding device, the sliding device is used for fixing the blade 2 and driving the blade 2 to slide along the sliding groove, one end of the installation seat 1 is a blade outlet end 11 and is provided with a blade outlet 12, and the blade 2 extends out of the blade outlet 12 under the driving of the sliding device after being installed; the other end of the mounting seat 1 is a positioning end 13 and is provided with a second positioning part; still include elastic component 3, the both ends of elastic component 3 are connected respectively second location department on the slider with second location department, the length of the 3 natural state of elastic component is less than distance between first location department and the second location department for during the operation cutter, release blade 2 to play sword mouth 12 and make it take place elastic deformation for stretching elastic component 3, provide the elastic force of drawing back for slider and blade 2, stop blade 2 can be smoothly under the effect of elastic component 3 with the blade 2 that stretches out sword mouth 12 and draw back the mount pad after the effect to slider. Moreover, as the sliding groove is not provided with the wave-shaped bayonet of the traditional art designing knife, the blade 2 can be pushed out and pulled back along the sliding groove very smoothly and rapidly, and the operation is simple; in actual operation, a user only needs to overcome the elastic force of the spring by hand to push the sliding device to push the blade 2 out of the knife edge 12 to start using, and the blade 2 can automatically retract once the user loosens the blade, so that the blade cannot be kept outside the mounting seat 1, and accidental injury of the sharp cutter blade 2 to a human body is avoided. The cutter in this scheme is very fit for the closely and separates the condition of used repeatedly many times, can put the cutter with great care after the short duration uses and place the cutter aside, takes up the cutter again after carrying out other operations and uses, need not worry when carrying out other operations and touch blade 2 cuts carelessly. And a rear cover 4 is further arranged, the rear cover 4 is detachably covered on the positioning end 13, and the second positioning part is covered and protected to be protected from being damaged by external interference.

As a preferable scheme for fixing the elastic element 3, a movable cavity is arranged inside the mounting seat 1, the movable cavity extends to the positioning end 13, and the opening size of the positioning end 13 is matched with that of the sliding device, so that the sliding device can conveniently slide out of the mounting and dismounting blade from the opening of the positioning end 13; the mounting seat 1 of the positioning end 13 is further provided with a fixing port 14, and one end of the elastic piece 3 extends out of a first hanging ring 31 to be hung and fixed on the fixing port 14. The opening direction of the fixed opening 14 is consistent with the sliding direction of the sliding device. A hook-shaped piece 45 is further arranged at one end, facing the positioning end 13, of the sliding device, the hook-shaped piece is a second positioning part, a second hanging ring 32 is arranged at the other end of the elastic piece 3 and is hung and fixed on the hook-shaped piece 45, and the elastic piece 3 is firmly fixed through fixing of a fixing opening 14 in the positioning end 13 and the hook-shaped piece, so that the sliding device can automatically return along the sliding chute by taking the mounting seat 1 as a base point; and the elastic piece 3 with the arrangement is shorter in length, so that the position in the mounting seat is not excessively occupied, and the whole volume is smaller. One end of the sliding device, facing the knife outlet, is further provided with a circular protrusion, and the circular protrusion 41 is matched with the mounting hole in the blade 2 and used for mounting a fixed blade.

As a preferable embodiment of the elastic member 3, the elastic member 3 is a spring which is simple and light and is easily fixed to the fixing opening 14 and the circular protrusion 41.

Specifically, the sliding groove includes a sliding opening 51 and a blocking wall 52, the sliding opening 51 is in a strip shape and is communicated with the outside and the movable cavity, and the blocking wall 52 is located on two sides of the sliding opening 51 and is connected to the side wall 15 of the mounting seat 1.

The sliding device comprises an inner sliding limiting part 42, a connecting part 43 and a pushing part 44, the inner sliding limiting part 42 is positioned in the movable cavity, the inner sliding limiting part 42 is preferably provided with two positions, the width of the inner sliding limiting part is larger than that of the sliding opening 51, and two sides of the inner sliding limiting part are abutted against the inner side wall 15 of the mounting seat 1 and the lower surface of the blocking wall 52, so that the inner sliding limiting part 42 is clamped on the lower surface of the blocking wall 52, and the sliding device cannot fall out of the movable cavity; the connecting portion 43 is connected to the upper surface of the inner slide limiting portion 42 and extends out of the slide opening 51; the pushing portion 44 is connected above the connecting portion 43, the width of the pushing portion 44 is larger than the width of the sliding opening 51 and abuts against the upper surface of the blocking wall 52, and the pushing portion 44 is pressed by a hand of a user when in use to act on the pushing portion, so that the sliding device is pushed to slide on the sliding groove integrally. The first positioning position is arranged at a position where the inner sliding limiting part 42 faces the positioning end 13.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims (10)

1. The cutter capable of automatically retracting the blade is characterized by comprising a mounting seat and a sliding device, wherein a sliding groove is formed in the mounting seat, the sliding groove is a sliding guide rail of the sliding device, and a first positioning part is arranged on the sliding device; one end of the mounting seat is a cutter outlet end and is provided with a cutter outlet; the other end of the mounting seat is a positioning end and is provided with a second positioning part; the elastic piece is characterized by further comprising an elastic piece, wherein two ends of the elastic piece are respectively connected with the first positioning position and the second positioning position, and the length of the elastic piece in a natural state is smaller than the distance between the first positioning position and the second positioning position.

2. The cutting tool with the automatically retractable blade as claimed in claim 1, wherein a movable cavity is formed inside the mounting seat, the movable cavity extends to the positioning end, the opening of the positioning end is matched with the sliding device, a fixing opening is further formed in the mounting seat of the positioning end, and one end of the elastic member is fixed to the fixing opening.

3. The cutting tool with the automatically retractable blade as claimed in claim 2, wherein the opening direction of the fixing opening is the same as the sliding direction of the sliding device, and the elastic member is hung on the fixing opening.

4. The cutting tool with the automatically retractable blade as claimed in claim 2, wherein a hook is further disposed at an end of the sliding device facing the positioning end, the hook is the second positioning portion, and the other end of the elastic member is fixed to the hook.

5. The automatically retractable blade knife of claim 4 wherein the end of the slide facing the exit edge is further provided with a rounded protrusion that mates with a mounting hole in the blade.

6. The cutting tool with the automatically retractable blade as claimed in claim 2, wherein the sliding groove comprises a sliding opening and a blocking wall, the sliding opening is in a strip shape and is communicated with the movable cavity, and the blocking wall is located on two sides of the sliding opening and is connected to the side wall of the mounting seat.

7. The cutting tool with the automatically retractable blade as claimed in claim 6, wherein the sliding device comprises an inner sliding limiting part, a connecting part and a pushing part, the inner sliding limiting part is located inside the movable cavity, the width of the inner sliding limiting part is greater than that of the sliding opening, and two sides of the inner sliding limiting part are abutted against the inner side wall of the mounting seat and the lower surface of the blocking wall; the connecting part is connected to the upper surface of the inner sliding limiting part and extends out of the sliding opening; the pushing portion is connected to the upper portion of the connecting portion, and the width of the pushing portion is larger than that of the sliding opening and abuts against the upper surface of the blocking wall.

8. The automatically retractable blade knife of claim 7, wherein the first location is located at a position of the inner slide stop toward the location end.

9. The automatically retractable blade knife of any one of claims 1 to 8 wherein the resilient member is a spring.

10. The cutting tool with the automatically retractable blade as claimed in claim 1, further comprising a rear cover detachably covering said positioning end to cover said second positioning portion.

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