CN212287718U

CN212287718U - Cutting tool

Info

Publication number: CN212287718U
Application number: CN202020899367.2U
Authority: CN
Inventors: 赵卓君; 徐福荣; 葛昌盛; 王奕然
Original assignee: Shanghai M&G Stationery Inc
Current assignee: Shanghai M&G Stationery Inc
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-01-05
Anticipated expiration: 2030-05-25

Abstract

The utility model provides a cutter, which comprises a shell, a blade, a cutter protecting shell, a pressing key and a linkage mechanism, wherein the shell is provided with a first opening; the blade is arranged in the shell; the knife protecting shell is movably connected with the shell, and the position relative to the first opening comprises a closing position and an opening position; the pressing key is arranged on the shell and can move between a stressed position and a released position; the linkage mechanism is arranged in the shell and is linked with the knife protection shell and the pressing key; when the pressing key is in the stressed position, the knife protecting shell is in the open position, and the knife tip of the knife blade is exposed out of the first opening; when the pressing key is at the releasing position, the knife protecting shell is at the closing position, and the blade is hidden in the shell. Compared with the prior art, the utility model discloses the cutter adopts the cutter rigid, and the mode of guarded sword shell motion changes subconscious push-type broach action into through the action of pressing into with conscious for user's test safety more and convenience with the cutter body.

Description

Cutting tool

Technical Field

The utility model discloses relate to historical relic articles for use technical field on the whole, particularly, relate to a cutter.

Background

The utility knife can be widely applied to daily life and cultural and sports goods, and particularly applied to the occasions of cutting paper, opening express packages and the like.

The existing art designing knife is limited by the structure, and the metal blade is pushed out of the protective shell, so that the blade can be used only by leakage. However, under the condition that the safety consciousness of the user is weak or the use is improper, the user does not timely withdraw the blade into the protective shell after the use of the knife is finished, so that the blade is always exposed, and the potential safety hazard is brought.

The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a safe and easy-to-operate cutting tool.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

according to one aspect of the present invention, there is provided a cutter comprising a housing, a blade, a cutter guard housing, a pressing key, and a linkage mechanism, the housing having a first opening; a blade mounted within the housing; the knife protecting shell is movably connected to the shell, and the position relative to the first opening comprises a closed position and an open position; the pressing key is arranged on the shell and can move between a stressed position and a released position; the linkage mechanism is arranged in the shell and is linked with the cutter protecting shell and the pressing key; when the pressing key is in a stressed position, the knife protection shell is in an open position, and the knife tip of the knife blade is exposed out of the first opening; when the pressing key is in the releasing position, the knife protecting shell is in the closing position, and the blade is hidden in the shell.

According to some embodiments of the invention, the push button is provided with an elastic element which urges the push button towards the release position.

According to some embodiments of the present invention, the guard blade shell includes cover portion and connecting portion, the connecting portion interlock in interlock mechanism when the closed position, cover portion's outline with the outline phase-match of casing.

According to some embodiments of the present invention, the knife protection casing can be along linear movement between closed position and open position, the knife protection casing has a gap, the gap runs through the inside and outside wall of the knife protection casing, the knife tip of blade can pass the gap.

According to some embodiments of the present invention, the linkage mechanism comprises:

and one end of the swing arm is rotationally connected with the shell, the other end of the swing arm is linked with the cutter protecting shell, and the swing arm can swing between a first position and a second position.

According to the utility model discloses some embodiments, the other end of swing arm is equipped with the projection, the knife protection shell is equipped with the guide way, the projection with the guide way cooperation work, so that when the swing arm swung between primary importance and second place, the knife protection shell can be removed between closed position and open position.

According to some embodiments of the present invention, when the swing arm is in the first position, the swing arm is parallel to the moving direction of the knife guard housing.

According to some embodiments of the present invention, a gear is provided at one end of the swing arm; the pressing key comprises a first pressing part and a rack part, and the rack part is meshed with the gear.

According to some embodiments of the present invention, the housing has a second opening through which the first pressing portion is exposed; when the pressing key is at the releasing position, the outer contour of the first pressing part is flush with the outer contour of the shell.

According to the utility model discloses some embodiments, the casing includes that the second presses splenium and third to press the splenium, the second press the splenium with the third is pressed the splenium and is located press the both sides of key, the second press the splenium with the third presses the splenium homogeneous phase for the surface indent of casing forms.

An embodiment in the above-mentioned utility model has following advantage or beneficial effect:

the utility model discloses a cutter, which comprises a housin, the blade, protect the sword shell, press key and interlock mechanism, switch between atress position and release position through pressing the key, and the interlock through interlock mechanism acts on, make and protect the sword shell to move between the closed position and open position, when the closed position, protect the sword shell and seal in the first opening of casing, the knife tip of blade is sheltered by protecting the sword shell, and hide in the casing, when opening the position, protect the first opening that the sword shell does not seal the casing, the knife tip of blade exposes in the first opening of casing, so that realize the cutting. Compared with the prior art, the utility model discloses the cutter adopts the cutter rigid, and the mode of guarded sword shell motion changes subconscious push-type broach action into through the action of pressing into with conscious for user's test safety more and convenience with the cutter body.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is a schematic internal view of a tool shown according to an exemplary embodiment.

FIG. 2 is a schematic view of a tool removal housing shown in accordance with an exemplary embodiment.

Fig. 3 is a schematic view of the gear shown in fig. 2.

Fig. 4 shows a schematic view of the guard housing of the knife in the closed position.

Fig. 5 shows a schematic view of the knife guard housing of the knife in the open position.

Wherein the reference numerals are as follows:

10. shell body

110. First opening

120. Second opening

130. Second pressing part

20. Blade

210. Knife tip

30. Knife protecting shell

310. Cover part

320. Connecting part

321. Guide groove

40. Push key

410. First pressing part

420. Rack portion

50. Swing arm

510. Convex column

520. Gear wheel

60. Elastic element

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "top", "bottom", and the like, are also intended to have similar meanings. The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," "third," and "fourth," etc. are used merely as labels, and are not limiting as to the number of their objects.

The embodiment of the utility model provides a cutter, which comprises a shell, a blade, a cutter protecting shell, a pressing key and a linkage mechanism, wherein the shell is provided with a first opening; the blade is arranged in the shell; the knife protecting shell is movably connected to the shell, and the positions relative to the first opening comprise a closing position and an opening position; the pressing key is arranged on the shell and can move between a stressed position and a released position; the linkage mechanism is arranged in the shell and is linked with the knife protection shell and the pressing key; when the pressing key is in a stressed position, the knife protection shell is in an open position, and the knife tip of the knife blade is exposed out of the first opening; when the pressing key is in the releasing position, the knife protecting shell is in the closing position, and the blade is hidden in the shell.

The structure and connection relationship of the cutting tool of the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, fig. 1 is a schematic internal view of a tool shown according to an exemplary embodiment. In the present embodiment, the cutter includes a housing 10, a blade 20, a cutter guard 30, a pressing key 40, an interlocking mechanism, and an elastic member 60. The housing 10 has a first opening 110 and a second opening 120, and the knife guard housing 30 is movably connected to the housing 10 and includes a closed position in which the knife guard housing 30 is closed at the first opening 110 and an open position in which the knife guard housing 30 is removed from the first opening 110 relative to the position of the first opening 110 of the housing 10.

The push key 40 is mounted to the housing 10 and is movable between a force-receiving position and a release position. The pressing key 40 is exposed through the second opening 120. The user can place the index finger on the pressing key 40, and the pressing key 40 is forced to move inwards until moving to the forced position. The pressing key 40 is provided with an elastic element 60, such as a compression spring, and the elastic element 60 applies force to the pressing key 40 towards the release position, so that the pressing key 40 can be restored from the force-applied position to the release position when the force is not applied. In the process that the pressing key 40 moves from the releasing position to the force-bearing position, the pressing force of the user can be transmitted to the knife protection shell 30 through the action of the linkage mechanism, so that the knife protection shell 30 moves from the closing position to the opening position. Conversely, in the process of returning the pressing key 40 from the force-receiving position to the release position, the elastic force of the elastic element 60 is transmitted to the blade protection housing 30 through the interlocking mechanism, so that the blade protection housing 30 moves from the open position to the closed position.

In an exemplary embodiment, the knife guard housing 30 is linearly movable between the closed position and the open position, the knife guard housing 30 has a slit (not shown) extending through the inner and outer walls of the knife guard housing 30, and the cutting tip 210 of the blade 20 can pass through the slit, so that the cutting tip 210 of the blade 20 can be switched between being exposed to the housing 10 and being hidden from the housing 10 during the linear movement of the knife guard housing 30. In fig. 1, the knife guard casing 30 is in the closed position, and when the knife guard casing 30 moves from the closed position to the open position, the knife guard casing 30 retracts, i.e. moves into the housing 10, so that the knife tip 210 of the knife blade 20 passes through the gap of the knife guard casing 30 and is exposed to the first opening 110 to realize the cutting action.

Of course, it is understood that the blade guard housing 30 may also oscillate instead of moving in a straight line. In other embodiments, the knife guard housing 30 can also adopt other suitable motions, such that the knife tip 210 of the knife blade 20 can be switched between being exposed to the housing 10 and being hidden in the housing 10 when the knife guard housing 30 moves between the closed position and the open position.

As shown in fig. 2, fig. 2 is a schematic view of a tool removal housing shown according to an exemplary embodiment. In some embodiments, the push key 40 moves between a stressed position and a released position and, through a linkage mechanism, moves the knife guard housing 30 between the closed position and the open position.

In some embodiments, the linkage mechanism includes a swinging member, such as a swinging arm 50, one end of the swinging arm 50 is rotatably connected to the housing 10, and the other end of the swinging arm 50 is linked to the guard blade housing 30, and the swinging arm 50 can rotate between the first position and the second position.

In some embodiments, the other end of the swing arm 50 is provided with a protruding column 510, the knife guard housing 30 is provided with a guiding slot 321, and the protruding column 510 cooperates with the guiding slot 321, so that when the swing arm 50 rotates between the first position and the second position, the protruding column 510 moves along the guiding slot 321, and drags the knife guard housing 30 to move between the closed position and the open position.

Of course, in other embodiments, the positions of the protruding column 510 and the guiding groove 321 can be interchanged, for example, the guiding groove 321 is disposed on the swing arm 50, and the protruding column 510 is disposed on the knife protection housing 30, so that the knife protection housing 30 can follow up when the swing arm 50 moves between the first position and the second position by the mutual cooperation of the protruding column 510 and the guiding groove 321.

Of course, it is understood that the linkage mechanism may also include a cam rotatably connected to the housing 10 and rotatable between the first position and the second position. The knife guard housing 30 cooperates with the surface of the cam, and when the cam moves from the first position to the second position, the knife guard housing 30 moves from the closed position to the open position; instead, the blade guard housing 30 moves from the open position to the closed position.

As shown in fig. 3, fig. 3 is a schematic view of the gears shown in fig. 2. In this embodiment, a gear 520 is disposed at one end of the swing arm 50, and the gear 520 and the swing arm 50 operate synchronously and are rotatably connected to the housing 10 through a shaft. The push button 40 includes a first push portion 410 and a rack portion 420, and the rack portion 420 is engaged with the gear 520. When a user applies a force to the first pressing portion 410, the rack portion 420 moves inward along a straight line, so as to drive the gear 520 to rotate, and finally drive the swing arm 50 to rotate together. Conversely, when the key 40 is moved from the force-receiving position to the release position, the rack 420 is moved linearly outward by the elastic force of the elastic member 60, so as to drive the gear 520 to rotate in the opposite direction, and finally the swing arm 50 to rotate together.

Of course, in other embodiments, the linkage action between the pressing key 40 and the swing arm 50 may be implemented by other suitable mechanisms besides the rack and pinion mechanism 520 to convert between the linear motion of the pressing key 40 and the rotational motion of the swing arm 50.

Referring to fig. 3, in the present embodiment, when the swing arm 50 is at the first position, i.e. when the knife guard casing 30 is at the closed position, the pressing key 40 is at the release position, and the swing arm 50 is parallel to the moving direction of the knife guard casing 30.

In this embodiment, through the design that swing arm 50 parallels with the moving direction of knife protection shell 30 when being in the first position for this cutter is when not using, and swing arm 50 can support and push against in knife protection shell 30, prevents that knife protection shell 30 from contracting in unexpected, and the cutter is unexpected to be revealed, brings the safety problem. Specifically, the pressing key 40 is acted by the elastic element 60, and the swing arm 50 is in the first position, in which the protruding column 510 is located at an end of the guiding slot 321 of the knife guard housing 30. When the knife protection housing 30 is accidentally stressed, that is, the knife protection housing 30 moves inwards along a straight line, the knife protection housing 30 cannot move inwards due to the abutting action of the convex column 510 of the swing arm 50, so that the knife tip 210 is prevented from being accidentally leaked to cause a safety problem.

Fig. 4 is a schematic view of the knife guard housing of the knife in the closed position, as shown in fig. 1 and 4. In the present embodiment, the guard housing 30 includes a cover portion 310 and a connecting portion 320, the connecting portion 320 has the above-mentioned guide groove 321 and is linked with the linkage mechanism, and in the closed position, the outer contour of the cover portion 310 matches with the outer contour of the housing 10. That is, when the knife guard housing 30 is in the closed position, the outer contour of the cover portion 310 is substantially flush with the outer contour of the housing 10, so that when the knife is not used, the surface of the housing 10 is not uneven due to the first opening 110 formed in the housing 10, which may affect the appearance of the knife.

The housing 10 has a second opening 120, and the first pressing portion 410 is exposed through the second opening 120. When the pressing key 40 is in the release position, the outer contour of the first pressing part 410 is flush with the outer contour of the housing 10.

Through the design that the outer contours of the cutter protecting shell 30 and the pressing key 40 are matched with the outer contour of the shell 10, the cutter can keep a smooth surface when not used, and the appearance and the holding hand feeling of the cutter cannot be influenced due to the fact that the first opening 110 and the second opening 120 formed in the shell 10 are uneven in the surface.

Fig. 5 is a schematic view of the knife guard housing of the knife in the open position, as shown in fig. 4 and 5. The utility model discloses the cutter is when cutting the action, presses key 40 to be located the stress position, and presses the first splenium 410 indent of key 40 to be in casing 10, and knife protection shell 30 is in the position of opening, and the cover portion 310 indent of knife protection shell 30 is in casing 10 to expose the knife tip 210 of blade 20.

In some embodiments, the shell 10 is substantially egg-shaped. The housing 10 may include a first half shell and a second half shell, the first half shell and the second half shell are fastened to form the housing 10, the housing 10 may be a hollow structure, and the blade 20, the blade protecting shell 30, the pressing key 40 and the linkage mechanism are all installed in the housing 10.

In this embodiment, the housing 10 is designed to have an egg-shaped configuration, which provides a smooth surface and improves the hand feeling of the user.

The shell 10 further includes a second pressing portion 130 and a third pressing portion, both the second pressing portion 130 and the third pressing portion are recessed relative to the outer surface of the shell 10, and the second pressing portion 130 and the third pressing portion can be located on two sides of the first pressing portion 410. When the user performs a cutting operation, the index finger naturally presses the first pressing portion 410, the thumb and the middle finger clamp the two sides of the housing 10, and respectively press the second pressing portion 130 and the third pressing portion, thereby forming a three-point fixed safe knife holding posture. When the cutting tool is used, the pressing position where the index finger is naturally placed can form a uniform force application direction with the tool tip 210 and an object needing to be cut in a sliding mode, the utilization rate of the cutting tool is better exerted, and the force of the thumb and the middle finger clamped on the two sides of the tool body can be changed along with the tool tip 210 serving as a fulcrum according to the surface shape (such as a concave-convex and/or irregular surface) of the object to be cut.

To sum up, the utility model discloses the advantage and the beneficial effect of cutter lie in:

the utility model discloses a cutter, including casing 10, blade 20, protect sword shell 30, press key 40 and interlock mechanism, switch between atress position and release position through pressing key 40, and the interlock through interlock mechanism acts, make protect sword shell 30 can remove between closed position and open position, when closed position, protect sword shell 30 seals in casing 10's first opening 110, the knife tip 210 of blade 20 is covered by protect sword shell 30, and hide in casing 10, when open position, protect sword shell 30 does not seal casing 10's first opening 110, the knife tip 210 of blade 20 exposes in casing 10's first opening 110, so that realize the cutting. Compared with the prior art's cutter, the utility model discloses the cutter adopts the cutter immovable, and the mode of the 30 movements of guarded knife shell changes subconscious push-type broach action into through the action of pressing into subconscious for user's test safety and convenience more with the cutter body.

It should be noted here that the tool shown in the drawings and described in the present specification is only one example of the application of the principles of the present invention. It should be clearly understood by those skilled in the art that the principles of the present invention are not limited to any of the details or any of the components of the apparatus shown in the drawings or described in the specification.

It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The present invention is capable of other embodiments and of being practiced and carried out in a variety of ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments set forth herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.

Claims

1. A tool, comprising:

a housing having a first opening;

a blade mounted within the housing;

the knife protecting shell is movably connected to the shell, and the position relative to the first opening comprises a closed position and an open position;

the pressing key is arranged on the shell and can move between a stressed position and a released position; and

the linkage mechanism is arranged in the shell and is linked with the cutter protecting shell and the pressing key;

when the pressing key is in a stressed position, the knife protection shell is in an open position, and the knife tip of the blade is exposed out of the first opening; when the pressing key is in the releasing position, the knife protecting shell is in the closing position, and the blade is hidden in the shell.

2. Tool according to claim 1, characterized in that the push key is provided with a resilient element which urges the push key towards the release position.

3. The tool according to claim 1, wherein the guard housing includes a cover portion and a coupling portion, the coupling portion being coupled to the coupling mechanism, an outer profile of the cover portion matching an outer profile of the housing in the closed position.

4. The tool of claim 1, wherein the guard housing is linearly movable between a closed position and an open position, the guard housing having a gap extending through inner and outer walls of the guard housing, the tip of the blade being capable of passing through the gap.

5. The tool according to claim 4, wherein the linkage mechanism comprises:

6. The tool according to claim 5, wherein the other end of the swing arm is provided with a projection, and the knife guard housing is provided with a guide slot, the projection cooperating with the guide slot to enable the knife guard housing to move between the closed position and the open position when the swing arm swings between the first position and the second position.

7. The tool according to claim 6, wherein the swing arm is parallel to a direction of movement of the knife guard housing when the swing arm is in the first position.

8. The tool according to claim 6, wherein one end of the swing arm is provided with a gear; the pressing key comprises a first pressing part and a rack part, and the rack part is meshed with the gear.

9. The tool according to claim 8, wherein the housing has a second opening through which the first pressing portion is exposed; when the pressing key is at the releasing position, the outer contour of the first pressing part is flush with the outer contour of the shell.

10. The tool according to any one of claims 1 to 9, wherein the housing includes a second pressing portion and a third pressing portion, the second pressing portion and the third pressing portion are located on two sides of the pressing key, and both the second pressing portion and the third pressing portion are recessed with respect to an outer surface of the housing.