CN217020476U - Hand-held safety cutting knife - Google Patents

Abstract

The utility model provides a hand-held safety cutter, which comprises a cutter frame and a blade arranged in the cutter frame in a sliding manner; the lower end of the knife rest is provided with a bottom support, and a gap for placing a cut article exists between the upper end surface of the bottom support and the end surface of the lower end of the knife rest. The bottom support is connected with the back of the tool rest in the direction facing to the tool nose of the blade, and the bottom support is connected with the tool rest through a connecting block. The connecting block comprises two guide surfaces which are symmetrically arranged along the blade; the farther from the tip of the blade, the smaller the distance between the two guide surfaces. The bottom support is arranged below the blade, so that during cutting, hands cannot easily extend into a gap between the bottom support and the blade, the possibility of direct contact between the blade and a human body is eliminated, and the safety performance is greatly improved.

Description

Hand-held safety cutting knife

Technical Field

The utility model belongs to the field of machining and cutting tools, and particularly relates to a handheld safety cutting knife.

Background

When a common knife such as a utility knife is manually used to cut a rubber sheet, wallpaper, etc., the knife is usually obliquely cut, a knife tip cuts, and the other part of the knife is not lifted to contact with the cut part. The cutter head part of the cutter is not protected, the hand is easily placed below the lifting part behind the cutter head, when the cutter point moves to cut, the hand is easily scratched due to improper operation, and the safety risk is high. The existing safety knives are mainly divided into two categories: 1. part of the safety knife blade is thin in texture, short in service time and difficult to replace; 2. the other part is thick, but the blade is not common and needs to be customized, and the cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model provides a hand-held safety cutter.

The object of the utility model is achieved in the following way: a hand-held safety cutter comprises a cutter frame and a blade arranged in the cutter frame in a sliding manner; the lower end of the knife rest is provided with a bottom support, and a gap for placing a cut object is formed between the upper end surface of the bottom support and the end surface of the lower end of the knife rest.

The collet is connected with the back of the tool rest in the direction from the tool tip of the blade, and the collet is connected with the tool rest through a connecting block.

The connecting block comprises two guide surfaces symmetrically arranged along the blade; the farther from the tip of the blade, the smaller the distance between the two guide surfaces.

The included angle between the length direction of the tool rest and the length direction of the bottom support is smaller than 90 degrees.

The distance of the gap between the shoe and the front end of the tool holder is adjustable.

The shape of the bottom support is wedge-shaped, namely, the thickness of the bottom support is gradually reduced from a position close to the connecting block to a position far away from the connecting block.

An end cover used for preventing the blade from extending out of the upper end of the blade holder is arranged at the upper end of the blade holder, and a sliding cover used for pushing the blade is arranged on the blade close to the end cover.

The knife rest is provided with a handle, one end of the handle is rotatably arranged on the knife rest, and the angle between the handle and the knife rest is adjustable.

The beneficial effects of the utility model are: the bottom support is arranged below the blade, so that during cutting, hands cannot easily extend into the bottom support and a gap between the blades, the possibility that the blades are in direct contact with a human body is eliminated, and the safety performance is greatly improved. The handle is arranged, so that the operation is more labor-saving and convenient.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is another side view of fig. 1.

FIG. 3 is a perspective view of the second embodiment of the present invention.

Fig. 4 is another side view of fig. 3.

Wherein, 1 is a knife rest, 2 is a blade, 3 is a bottom support, 4 is a connecting block, 5 is a handle, 6 is an end cover, and 7 is a sliding cover.

Detailed Description

In the present invention, unless otherwise specifically defined and limited, technical terms used in the present application should have the ordinary meaning as understood by those skilled in the art to which the present invention pertains. The terms "connected", "fixed", "arranged" and the like are to be understood in a broad sense, and may be fixedly connected, detachably connected or integrated; can be directly connected or indirectly connected through an intermediate medium; either mechanically or electrically. Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or indirectly contacting the second feature through intervening media. Furthermore, a first feature may be "on" or "over" or "above" a second feature, and the like, may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under" or "beneath" or "under" a second feature may be directly under or obliquely under the second feature or may simply mean that the first feature is at a lesser elevation than the second feature. Relational terms such as first, second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Terms used in the description such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc., are used to indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated.

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. As shown in fig. 1-4, a hand-held safety cutter comprises a cutter frame 1 and a cutter blade 2 arranged in the cutter frame 1 in a sliding way; the lower end of the knife rest 1 is provided with a bottom support 3, and a gap for placing cut articles exists between the upper end surface of the bottom support 3 and the end surface of the lower end of the knife rest 1. (wherein the blade 2 can be extended and retracted from the lower end of the blade holder 1 along the length of the blade holder 1 and locked at any position; this part of the structure is prior art, all the existing structures capable of achieving this function can be adopted in the present invention, such as the structure related to this part of patent CN208867220U, etc., the blade holder 1 can be further provided with a locking mechanism for locking the position of the blade 2 in the blade holder 1 and a guide for pushing the blade 2 to move, the blade 2 can be extended from the lower end of the blade holder 1 to cut the object to be cut. the present invention provides a shoe 3, the upper end face of the shoe 3, namely the end face of the shoe 3 adjacent to the lower end of the blade holder 1, and the lower end face of the blade holder 1 have a gap, when the object to be cut is to be cut, the object to be cut is placed in the gap, the blade 2 is pushed to extend from the lower end of the blade holder 1 and is pressed against the object to be cut. the cutting knife is pulled to cut the object to cut And (6) cutting. In the structure, the bottom support 3 is arranged below the blade 2, and when the cutter is used for cutting, hands are not easy to extend into a gap between the bottom support 3 and the blade 2, so that the possibility that the blade 2 is in direct contact with a human body is eliminated, and the safety performance is greatly improved.

The collet 3 is connected with the tool rest 1 from the back of the tool tip of the blade 2 in the direction, and the collet 3 is connected with the tool rest 1 through a connecting block 4. The connecting block 4, the bottom support 3 and the tool rest 1 can be integrally formed or fixed together by welding and the like. The shoe 3 may be wedge-shaped, i.e. the thickness of the shoe 3 decreases from a position close to the connecting piece 4 to a position away from the connecting piece 4, which makes it easier to insert the article to be cut and to facilitate the cutting of the article by the blade.

The connecting block 4 comprises two guide surfaces symmetrically arranged along the blade 2; the further away from the tip of the blade 2, the smaller the distance between the two guide surfaces. The cross sections of the two guide surfaces can be triangular or isosceles trapezoid or two half ellipses. The cutter moves while cutting the article to be cut. The whole cutting knife passes through the middle of the cut object, and the guide surface is arranged to effectively separate the cut object.

The included angle between the length direction of the tool rest 1 and the length direction of the bottom support 3 is smaller than 90 degrees. Preferably between 60 and 90 degrees. The longitudinal direction of the blade holder 1 coincides with the longitudinal direction of the blade 2. The length direction of the shoe 3 refers to a direction parallel or approximately parallel to the width direction of the blade 2.

The distance of the gap between the shoe 3 and the front end of the tool holder 1 is adjustable. There are various specific adjustment methods. For example, the connecting block 4 and the tool holder 1 are connected through bolts, a plurality of threaded holes are formed, and the length of the gap is adjusted by adopting different threaded hole connections. The upper end of the blade holder 1 is provided with an end cap 6 for preventing the blade 2 from protruding from the upper end of the blade holder 1. The blade 2 groove is arranged in the tool rest 1, and the end cover 6 is detachably arranged on the blade 2 groove at the upper end of the tool rest 1. A sliding cover 7 for pushing the blade 2 may be provided on the blade 2 near the end cap 6. The sliding cover 7 is pushed by hand to move, and the blade 2 stretches.

The knife rest 1 is provided with a handle 5. The cutting knife is pulled by the handle 5, so that the cutting process is more labor-saving and safer. The handle 5 may be a closed type hand-held handle 5, i.e. the handle 5 is connected with the blade holder 1 at both ends, or may be a non-closed type structure with one end extending out of the blade holder 1. The handle 5 of one embodiment in the drawings is of closed construction. The handle 5 is provided at one side of the blade holder 1, and the connection blocks 4 are respectively provided at both sides of the blade 2. Of course, it can also be arranged on the upper side of the tool holder 1. The handle 5 is arranged, so that the operation is more labor-saving and convenient. In another embodiment of the drawing, the handle 5 is of a non-enclosed structure, and one end of the handle 5 is connected with the tool holder 1. The angle between the handle 5 and the blade holder 1 is adjustable. There are various specific adjustment methods. Such as: the handle 5 is connected with the tool rest through a rotating shaft, the outer surface of the rotating shaft such as a pin shaft is provided with threads, and the nut is matched with the threads on the outer surface of the rotating shaft to realize that the nut presses the handle 5. Other common rotational connections and adjustments are also possible.

According to the wallpaper cutter, the bottom support 3 and the handle 5 are arranged, so that similar articles such as paper, glass paper and rubber can be conveniently cut, the operation is simple, the safety performance is improved, the wallpaper cutter is designed aiming at common wallpaper cutters, the blades 2 can adopt the common wallpaper cutter blades 2, and the manufacturing cost of the blades 2 is reduced.

When in specific implementation; the cutting knife is moved by holding the handle 5 with the hand, so that the cutting knife is moved above the cut object, the cut object is placed in the gap between the shoe 3 and the blade holder 1, and then the blade 2 is pushed to extend out of the blade holder 1 and to be pressed against the cut object. And pulling the cutting knife to perform cutting operation on the cut object. The blade 2 moves until the cutting of the whole article to be cut is completed, the whole blade holder 1 passing from the position where said article to be cut is cut open.

The features of the above-described embodiments may be arbitrarily combined, and the combination of the features should be considered as being within the scope of the present description, unless there is any contradiction between the combinations. The technical solution according to the present invention and equivalents or changes, and several changes and improvements made without departing from the overall concept of the present invention should also be considered as the protection scope of the present invention.

Claims (8)

1. A hand-held safety cutter comprises a cutter frame and a blade arranged in the cutter frame in a sliding manner; the method is characterized in that: the lower end of the knife rest is provided with a bottom support, and a gap for placing a cut article exists between the upper end surface of the bottom support and the end surface of the lower end of the knife rest.

2. A hand-held safety cutting knife according to claim 1, wherein: the collet is connected with the back of the tool rest in the direction from the tool tip of the blade, and the collet is connected with the tool rest through a connecting block.

3. A hand-held safety cutting knife according to claim 2, wherein: the connecting block comprises two guide surfaces symmetrically arranged along the blade; the farther from the tip of the blade, the smaller the distance between the two guide surfaces.

4. A hand-held safety cutting burr according to claim 2, further comprising: the included angle between the length direction of the tool rest and the length direction of the bottom support is smaller than 90 degrees.

5. A hand-held safety cutting knife according to claim 2, wherein: the distance of the gap between the shoe and the front end of the tool holder is adjustable.

6. A hand-held safety cutting burr according to claim 2, further comprising: the shape of the bottom support is wedge-shaped, namely, the thickness of the bottom support is gradually reduced from a position close to the connecting block to a position far away from the connecting block.

7. A hand-held safety cutting burr according to claim 1, further comprising: an end cover used for preventing the blade from extending out of the upper end of the blade holder is arranged at the upper end of the blade holder, and a sliding cover used for pushing the blade is arranged on the blade and close to the end cover.

8. A hand-held safety cutting knife according to any one of claims 1 to 6, wherein: the knife rest is provided with a handle, one end of the handle is rotatably arranged on the knife rest, and the angle between the handle and the knife rest is adjustable.

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