CN209831704U

CN209831704U - Handheld safe cut-off knife

Info

Publication number: CN209831704U
Application number: CN201920391432.8U
Authority: CN
Inventors: 杜明洋
Original assignee: Zhengzhou Zhifu Cnc Equipment Co Ltd
Current assignee: Zhengzhou Zhifu Cnc Equipment Co Ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2019-12-24
Anticipated expiration: 2029-03-26

Abstract

The utility model provides a hand-held safe cut-off knife, which relates to the technical field of hardware tools and comprises a grab handle and a cutter arranged on the grab handle, wherein the grab handle is provided with a cutter cover used for covering the cutter at one end of the cutter, the cutter cover comprises a cover body and a supporting plate arranged on the cover body and used for supporting a membrane material, and a cutting space for allowing the membrane material to pass through for cutting is reserved between the supporting plate and the cutting part of the cutter; the utility model discloses in because the setting of backup pad, the cutting edge of cutter is located cuts the space, makes the cutting edge can not spill, only stretches into the membrane material and cut just can contact with the cutting edge after in the space, the user can not miss and bump the cutting edge, improves the security to the user is holding the utility model discloses the time, also can not operate the cutting edge and cause fish tail etc. to other people or article, consequently the utility model discloses have very high safety protection ability, the practicality is strong.

Description

Handheld safe cut-off knife

Technical Field

The utility model relates to a hardware and tools technical field specifically is a handheld safe cut-off knife.

Background

The cutting knife is a basic cutting tool, has the advantages of sharp cutting edge, small size, durability, replaceable blade, large cutting force, high cutting speed and the like, and is widely applied to the fields of life, building and machine manufacturing.

The existing cutting knife is basically divided into four types:

the blade and the handle of the first cutting knife are integrally formed, the cutting edge of the blade is exposed outside, and the handle of the first cutting knife cannot be taken in when not used;

the blade of the second cutting knife can be folded and taken into the knife handle when not in use, the cutting knife can be folded and taken into the knife handle only by matching two hands, the use is inconvenient, the handle area of the hand is overlapped with the folding area of the blade, the hand is easy to be injured, and the safety is low;

the blade of the third cutting knife can extend out of the knife handle forwards under the pushing of a user and can be locked through the pushing piece, when the cutting knife is not used, the pushing piece is triggered, the blade can automatically retract into the knife handle backwards under the action of the spring, and the cutting knife has the advantages that the retracting speed is high under the action of the elastic force, once the pushing piece is triggered accidentally in the using process, the human body can be cut easily, and the safety is low;

the blade of the fourth cutting knife can extend out of the knife handle forwards and retract into the knife handle backwards when a user pushes and pulls the pushing piece, the safety of the cutting knife is higher than that of the first three cutting knives, but the extending and retracting speeds of the blade are relatively high because the motion trail of the blade is a linear trail, no buffer is generated in the extending process, the knife discharging speed and the knife retracting speed are too high, and the safety coefficient is relatively low; on the other hand, the pushing piece and the knife rest are integrated, the blade is pushed to the cutting position and is clamped only by the fact that the elastic sheet on the pushing piece is in point contact with the knife rest, if excessive force is applied in the cutting operation, or the pushing piece is pressed mistakenly, the knife rest and the blade are easy to retract into the knife handle, the hand of a user is easy to cut under the accident condition, and therefore potential safety hazards exist.

Through search, a safe paper cutter is disclosed in chinese patent No. CN202129802U, which is characterized in that a metal cutter cover is worn on the front end of the paper cutter, a cutter slot is provided on the front end of the cutter cover, and after use, the metal cutter cover is fastened on the front end of the paper cutter, thereby achieving a safety protection effect.

However, in the above technical scheme, the metal severing knife cover needs to be manually covered on the front end of the paper cutting knife to protect the knife, so that the operation is inconvenient, and the protection effect cannot be achieved in the use process of the knife.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a handheld safe cut-off knife aims at solving among the prior art and need break the lid manpower lid off with the fingers and thumb with the metal and close the purpose that the tip position could play the protection to the cutter before the paper cutter, and not only the operation is very inconvenient, can not play the problem of the effect of protection in the use of cutter moreover.

In order to achieve the above purpose, the utility model adopts the following technical scheme: handheld safe cut-off knife includes the grab handle and sets up the cutter on the grab handle, and the grab handle is equipped with the cutter cover that is used for covering over the cutter in the one end that sets up the cutter, the cutter cover is including the cover body and set up the backup pad that is used for supporting the membrane material on the cover body, leaves between the cutting part of backup pad and cutter to let the membrane material process in order to carry out the space that cuts.

The grab handle is detachably connected with the cover body.

The grab handle comprises an upper shell and a lower shell, the upper shell is connected with the lower shell in a buckled mode, the upper shell is provided with a clamping groove, the cover body is provided with a first elastic sheet, the first elastic sheet is connected with a first clamping bump which can be clamped into the clamping groove, a limiting hole is formed in the lower shell, a second elastic sheet is connected to the lower shell, and a second clamping bump which can be clamped into the limiting hole is connected to the second elastic sheet.

The lower casing is internally provided with a clamping groove formed by convex edges, and the upper casing is connected with a clamping buckle which can be clamped into the clamping groove.

The handheld safe cutter further comprises a cutter clamping piece, and the cutter is detachably mounted in the grab handle through the cutter clamping piece.

The cutter is clamped into the cutter clamping piece, a groove opening formed by convex ribs is formed in the grab handle, and the cutter clamping piece is clamped into the groove opening.

Cutter buckle spare includes first notch insert and second notch insert, and the insert axle on the second notch insert inserts in the grafting mouth on the first notch insert, and first notch insert and the second notch insert card after the cooperation of pegging graft are gone into to the notch, the cutter is leaked at the cutting edge of cladding and cutter between first cover piece and second cover piece, and spacing axle on the first cover piece inserts in the spliced eye on the second cover piece, and the through-hole on the cutter is passed to spacing axle, the second cover piece is equipped with vertical flange, has the clearance between the downwardly extending portion of vertical flange and the second cover piece, be equipped with the horizontal flange that can block into in the clearance on the first notch insert.

The grab handle is in a dolphin shape according with ergonomics.

The end part of the supporting plate extends out of the cover body, and the upper surface of the supporting plate is provided with a slope surface.

The utility model has the advantages that:

1. in the utility model, because of the arrangement of the supporting plate, the cutting edge of the cutter is positioned in the cutting space, so that the cutting edge can not leak, the membrane material can be contacted with the cutting edge only after stretching into the cutting space, the user can not touch the cutting edge by mistake, the safety of the user is improved, and the user can not operate the cutting edge to scratch other people or articles when holding the utility model, therefore, the utility model has high safety protection capability and strong practicability;

2. the upper shell and the lower shell are connected in an assembled mode through a buckle, the first clamping salient points on the cover body can be clamped into clamping grooves in the upper shell to achieve the assembled connection of the cover body and the upper shell, the second clamping salient points on the lower shell are clamped into limiting holes to achieve the assembled connection of the cover body and the lower shell, and the cover body, the upper shell and the lower shell can be assembled and disassembled conveniently, so that a cutter can be replaced conveniently;

3. because the utility model discloses the dismouting all can be realized to each part, consequently not only the equipment is convenient, when some parts are in the same direction as bad moreover, can carry out solitary change, practices thrift the cost.

Drawings

Fig. 1 is an exploded view of an embodiment of a hand-held safety cutter.

Fig. 2 is a front view of a knife cover in an embodiment of the hand held safety cutter.

Fig. 3 is an assembly view of an embodiment of a hand held safety cutter.

Fig. 4 is an assembly view of fig. 3 with the upper housing and the cutter cover removed.

Fig. 5 is an assembly view of fig. 3 with the upper housing removed.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-3, a handheld safety cutter comprises a handle 1 and a cutter 2 arranged on the handle 1, preferably, the handle 1 is in a dolphin shape conforming to ergonomics and convenient for being held by a hand, a cutter cover for covering the cutter 2 is arranged at one end of the handle 1 where the cutter 2 is arranged, the cutter cover comprises a cover body 3 and a support plate 4 arranged on the cover body 3 and used for supporting a film material, preferably, the end of the support plate 4 extends out of the cover body 3 and the upper surface of the support plate has a slope surface, so that the film material can slide onto the support plate 4 along the slope surface, and a cutting space 401 for allowing the film material to pass through for cutting is reserved between the support plate 4 and the edge of the cutter 2; when the installation cutter is used for cutting a membrane material, the supporting plate 4 is inserted into the lower part of the membrane material, so that the membrane material is inserted into the cutting space 401, the cutting edge of the cutter 2 positioned in the cutting space 401 supports against the edge of the membrane material, a person holds the grab handle 1 to push the handheld safe cutter, the cutting edge of the cutter 2 can cut the membrane material, which is practical and convenient, and the utility model is particularly important, due to the arrangement of the supporting plate 4, the blade of the cutter 2 is positioned in the cutting space 401, so that the blade cannot leak, the blade can only be contacted with the blade after the film material is stretched into the cutting space 401, a user cannot touch the blade by mistake, the safety of the user is improved, and the user holds the utility model discloses the time, also can not operate the cutting edge and cause fish tail etc. to other people or article, consequently the utility model discloses very high safety protection ability has, the practicality is strong.

In another embodiment of the present invention, the handle 1 and the cover 3 are detachably connected, and certainly, the handle 1 and the cover 3 can be detachably connected by means of a snap connection, a screw connection, a magnetic connection, and the like; in this embodiment, preferably, as shown in fig. 1, 4, and 5, the handle 1 includes an upper shell 11 and a lower shell 12, the upper shell 11 is connected to the lower shell 12 in a snap-fit manner, specifically, a snap-fit groove 123 formed by a convex edge is provided in the lower shell 12, a snap-fit buckle that can be snapped into the snap-fit groove 123 is connected to the upper shell 11, a snap-fit groove is provided on the upper shell 11, the cover body 3 is provided with a first elastic sheet 32, a first snap-fit bump 33 that can be snapped into the snap-fit groove is connected to the first elastic sheet 32, a limit hole 31 is provided on the lower shell 12, a second elastic sheet 124 is connected to the lower shell 12, and a second snap-fit bump 125 that can be snapped into the limit hole 31 is connected to the second elastic sheet 124; go up casing 11 and casing 12 and realize the assembled connection through the buckle, and first screens bump 33 on the cover body 3 can block in the draw-in groove of last casing 11, realize the assembled connection of the cover body 3 with last casing 11, and second screens bump 125 on the casing 12 card is gone into in spacing hole 31 down, realize the assembled connection of the cover body 3 with casing 12 down, consequently as shown in fig. 1, the cover body 3, go up casing 11 and casing 12 all can conveniently assemble and dismantle down, conveniently change the cutter.

In another embodiment of the present invention, as shown in fig. 1, 4 and 5, the hand-held safety cutter further includes a cutter fastening member 5, the cutter 2 is detachably mounted in the handle 1 through the cutter fastening member 5, the cutter 2 is clamped into the cutter fastening member 5, the notch 121 formed by the convex edge is formed in the handle 1, and the cutter fastening member 5 is clamped into the notch 121, so as to realize the assembly-type connection of the cutter fastening member 5 and the handle 1.

Specifically, the cutter fastener 5 includes a first notch insertion piece 51 and a second notch insertion piece 52, the insertion shaft 28 on the second notch insertion piece 52 is inserted into the insertion opening on the first notch insertion piece 51, the first notch insertion piece 51 and the second notch insertion piece 52 after being inserted and matched are clamped into the notch 121, the cutter 2 is wrapped between the first cover piece 57 and the second cover piece 54, the cutting edge of the cutter 2 leaks out, the limiting shaft on the first cover piece 57 is inserted into the insertion hole 56 on the second cover piece 54, the limiting shaft passes through the through hole 21 on the cutter 2, the second cover piece 54 is provided with a vertical convex plate 55, a gap is formed between the downward extending portion of the vertical convex plate 55 and the second cover piece 54, and the first notch insertion piece 51 is provided with a horizontal convex plate 53 which can be clamped into the gap; as shown in fig. 1, the first cover sheet 57 and the second cover sheet 54 are mounted by inserting the limiting shaft into the inserting hole 56, the cutter 2 is mounted in the first cover sheet 57 and the second cover sheet 54, and the cutter 2 is fixedly mounted in the first cover sheet 57 and the second cover sheet 54 because the limiting shaft passes through the through hole of the cutter 2; through the grafting effect of inserting axle 28 and interface, also realized first notch insert 51 and the cooperation installation of second notch insert 52, first notch insert 51 and the second notch insert 52 after the cooperation installation are pegged graft in notch 121, the realization is fixed to the installation of first notch insert 51 and second notch insert 52, insert horizontal flange 53 in the clearance that forms between vertical flange 55 and the second cover piece 54, then can realize the cooperation installation of first notch insert 51 and second notch insert 52 and first cover piece 57 and second cover piece 54, because the utility model discloses each part all can realize the dismouting, consequently not only the equipment is convenient, and when some parts are in the same direction as bad, can carry out solitary change, practices thrift the cost.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a handheld safe cut-off knife, includes grab handle (1) and sets up cutter (2) on grab handle (1), and grab handle (1) is equipped with the cutter cover that is used for shroud cutter (2) in the one end that sets up cutter (2), characterized by, the cutter cover is including the cover body (3) and backup pad (4) that are used for supporting the membrane material that set up on the cover body (3), leaves between the cutting part of backup pad (4) and cutter (2) to let the membrane material process in order to cut space (401) that cuts.

2. A hand-held safety cutter according to claim 1, wherein the grip (1) is detachably connected to the cover (3).

3. The handheld safety cut-off knife of claim 2, characterized in that, the grab handle (1) includes an upper casing (11) and a lower casing (12), the upper casing (11) is connected with the lower casing (12) by a buckle, the upper casing (11) has a slot, the cover body (3) has a first elastic sheet (32), the first elastic sheet (32) is connected with a first clamping bump (33) which can be clamped into the slot, the lower casing (12) has a limit hole (31), the lower casing (12) is connected with a second elastic sheet (124), and the second elastic sheet (124) is connected with a second clamping bump (125) which can be clamped into the limit hole (31).

4. A hand-held safety cutter according to claim 3, wherein the lower housing (12) has a groove (123) formed by a rib, and the upper housing (11) is connected with a snap-in fastener which can be snapped into the groove (123).

5. A hand-held safety cutter according to claim 1, further comprising a cutter snap (5), wherein the cutter (2) is detachably mounted in the handle (1) by the cutter snap (5).

6. A hand-held safety cutter according to claim 5, characterized in that the cutter (2) is snapped into a cutter catch (5), the grip (1) having a groove (121) formed by a rib, the cutter catch (5) snapping into the groove (121).

7. The hand-held safety cut-off knife of claim 6, characterized in that the knife fastener (5) comprises a first notch insertion piece (51) and a second notch insertion piece (52), an insertion shaft (28) on the second notch insertion piece (52) is inserted into an insertion opening on the first notch insertion piece (51), the first notch insertion piece (51) and the second notch insertion piece (52) which are matched in an insertion way are clamped into the notch (121), the knife (2) is covered between the first cover piece (57) and the second cover piece (54) and the knife edge of the knife (2) leaks out, a limiting shaft on the first cover piece (57) is inserted into an insertion opening (56) on the second cover piece (54) and passes through a through hole (21) on the knife (2), the second cover piece (54) is provided with a vertical convex plate (55), a gap is reserved between the downward extension part of the vertical convex plate (55) and the second cover piece (54), the first notch insertion piece (51) is provided with a transverse convex plate (53) which can be clamped into the gap.

8. A hand-held safety cutter according to any one of claims 1 to 7, wherein the grip (1) is in the shape of an ergonomic dolphin.

9. A hand-held safety cutter according to any one of claims 1 to 7 wherein the end of the support plate (4) extends out of the housing (3) and has a ramp surface on its upper surface.