Art knife capable of safely breaking off and automatically storing blade

Abstract

The utility model relates to an art knife capable of breaking off safely and storing a blade automatically, which comprises a C-shaped knife sheath and a C-shaped blade arranged in the C-shaped knife sheath, a blade breaking-off mechanism is arranged at the tail of the C-shaped knife pin, and a waste blade storage mechanism is arranged beside the blade breaking-off mechanism. The blade breaking-off device is reasonable in design and convenient to use, the blade at the outermost end is broken off in the waste blade storage mechanism through the blade breaking-off mechanism, an old blade is located in an inner cavity of the blade breaking-off mechanism in the breaking-off process, the blade is prevented from being stretched and bounced to hurt people, breakage and damage of a new blade in the breaking-off process are reduced, and meanwhile the old blade can be conveniently treated in a centralized mode.

Description

Technical Field

[0001] The utility model relates to an art knife with a blade that can be safely broken off and automatically stored. Background Art

[0002] When the blade tip and blade edge of the commonly used utility knife become blunt, the cutting effect of the utility knife will be greatly reduced. At this time, the blunted section of the blade needs to be broken off so that the new sharp blade tip can be used. The usual practice is to place the blade against a hard object or use a special tool to press and break the blade, but the broken blade can bounce in any direction, which can easily cause danger; at the same time, in the process of breaking the outermost section of the blade, other good blades are likely to break under stress; in addition, the discarded utility blades after breaking need to be picked up and stored separately, which is relatively troublesome. Utility Model Content

[0003] The utility model improves the above-mentioned problem, that is, the technical problem to be solved by the utility model is to provide a utility knife which can safely break off and automatically store blades. The utility knife is easy to use, and the outermost blade is broken off by the blade breaking mechanism and placed in the discarded blade storage mechanism to prevent the blade from bouncing and injuring people, reduce the breakage and damage of the new blade during the breaking process, and facilitate the centralized treatment of the old blades.

[0004] The utility model is constructed as follows: it comprises a C-shaped scabbard and a C-shaped blade arranged inside the C-shaped scabbard; a blade breaking mechanism is arranged at the tail of the C-shaped blade pin; and a discarded blade storage mechanism is arranged beside the blade breaking mechanism.

[0005] Furthermore, the blade breaking mechanism includes a blade fixing part arranged at the tail of the C-shaped scabbard, a first blade breaking insertion port arranged in the middle of the blade fixing part, and a breaking space connected to the first blade breaking insertion port, a breaking block that can slide up and down is arranged in the breaking space, an elastic element is arranged between the lower part of the breaking block and the breaking space, a hollow part is arranged in the middle of the breaking block, a second blade breaking insertion port is arranged in the hollow part of the breaking block, and a blade blocking part is arranged at the output end of the second blade breaking insertion port.

[0006] Furthermore, the first blade breaking insertion opening includes a first trapezoidal notch and a first square notch; the second blade breaking insertion opening includes a second trapezoidal notch and a second square notch, and the upper and lower surfaces of the second trapezoidal notch are arc-shaped inclined surfaces.

[0007] Furthermore, the waste blade storage mechanism includes a waste blade storage bin connected to the breaking space of the blade breaking mechanism, the waste blade storage bin is closed on one side and open on the other side, and a strong magnet is provided at the open end of the waste blade storage bin.

[0008] Furthermore, a magnetic isolation plate made of plastic material is provided at the open end of the waste blade storage bin, and upper and lower slots are respectively provided on the upper and lower parts of the waste blade storage bin, the length of the upper slot is greater than the lower slot, and a lower protrusion is provided at the lower part of the magnetic isolation plate to cooperate with the lower slot, and the maximum width of the magnetic isolation plate cooperates with the upper slot, and a connecting hole is provided in the middle part of the magnetic isolation plate to cooperate with a fixing column provided on the side of a strong magnet, and a fixed socket is provided at the front part of the waste blade storage bin, and the fixed socket cooperates with a plug plate provided at the front part of the strong magnet, and a fixing plate with a fixing hole is also provided on the strong magnet, and the fixing plate is mounted on the inner side of the C-shaped scabbard by screws.

[0009] Furthermore, a blade slot for sliding the C-shaped scabbard is provided on the inner side of the C-shaped scabbard, and a blade fixing mechanism for controlling the telescopic movement or locking of the C-shaped blade is provided at the rear end of the C-shaped blade.

[0010] Furthermore, a tool handle is provided on the outer side of the C-shaped tool pin.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the device has reasonable design, simple structure and convenient use. The outermost blade is broken off in the waste blade storage mechanism through the blade breaking mechanism, which prevents the blade from bouncing and injuring people, reduces the breakage and damage of the new blade during the breaking process, and is convenient for centralized treatment of the old blades. When the first broken blade at the outermost end is worn out or discarded, the user inserts the outermost end of the C-shaped blade into the first blade breaking insertion port and the second blade breaking insertion port at the tail of the C-shaped sheath. Due to the limitation of the blade blocking member, After the two outermost blades of the C-shaped blade are inserted into the first blade breaking insertion port and the second blade breaking port, they cannot be inserted further. At this time, the outermost old blade enters the second blade breaking insertion port, and the new blade adjacent to the old blade enters the first blade breaking insertion port; the C-shaped blade is limited by the blade fixing mechanism to keep the C-shaped blade fixed, and the breaking block is pressed down, and the old blade limited in the breaking block is slowly bent downward until the old blade breaks along the blade breaking line; the broken old blade falls into the waste blade storage bin and is adsorbed at a position with strong magnetic force.

[0012] When multiple C-shaped blades have been used up and the storage bin for used blades is gradually full, use a screwdriver to unscrew the screws that fix the strong magnet, remove the strong magnet, and then open the magnetic isolation plate to take out the used blades for centralized disposal. The magnetic isolation plate can prevent the used blades from being directly adsorbed on the strong magnet and difficult to remove. Since the strong magnet and the shell of the C-shaped scabbard are movably connected, the strong magnet can be separated from the tool after unscrewing the screw. At this time, all the blades in the storage bin for used blades can be easily poured into a fixed container, which can also prevent the strong magnet from attracting the blades and causing them to fly up and injure your hands when pouring out the old blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0014] Figure 2 This is a cross-sectional view of the position of the blade breaking mechanism of the embodiment of the utility model;

[0015] Figure 3 This is an exploded view of the waste blade storage mechanism of the embodiment of the utility model;

[0016] Figure 4 This is a partial schematic diagram of a C-shaped scabbard according to an embodiment of the utility model;

[0017] Figure 5 This is a schematic diagram of a C-shaped blade according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Example: Figures 1 to 5 As shown, in this embodiment, there is provided a utility knife which can safely break off and automatically store a blade, comprising a C-shaped scabbard 1 and a C-shaped blade 2 arranged inside the C-shaped scabbard, a blade breaking mechanism 3 is arranged at the tail of the C-shaped knife pin, and a discarded blade storage mechanism 4 is arranged next to the blade breaking mechanism; the inner cavity of the blade breaking mechanism is connected to the inner cavity of the discarded blade storage mechanism.

[0020] The outer end of the above-mentioned C-shaped blade is provided with a C-shaped blade fixing hole 201 for connecting with the blade fixing mechanism. The outer side of the C-shaped blade is a C-shaped blade edge 202, and the inner side is a C-shaped blade back 203. The C-shaped blade is composed of multiple blades 204, and a blade breaking line 205 is provided between adjacent blades.

[0021] The C-shaped blade is C-shaped as a whole. The back of the blade, i.e. the inner side of the semicircular ring, is a standard semicircular arc. The blade edge is set at the position of the chord that divides the C-shaped arc blade into six equal parts. It can be used for both cutting and scraping.

[0022] In the embodiment of the utility model, the blade breaking mechanism 3 includes a blade fixing part 31 arranged at the tail of the C-shaped scabbard, a first blade breaking insertion port 311 arranged in the middle of the blade fixing part, and a breaking space 32 connected to the first blade breaking insertion port, a breaking block 33 which can slide up and down is arranged in the breaking space, the breaking block can move up and down, the lower part of the breaking block is supported by an elastic element, the upper part 331 of the breaking block passes through the surface of the C-shaped scabbard and a breaking button is arranged above it, an elastic element 333 is arranged between the lower part 332 of the breaking block and the breaking space, the elastic element can be an elastic steel sheet, a hollow part is arranged in the middle of the breaking block, a second blade breaking insertion port 34 is arranged in the hollow part of the breaking block, the second blade breaking insertion port can be arranged horizontally, and a blade blocking member 35 is arranged at the output end of the second blade breaking insertion port.

[0023] The center line of the first blade breaking off the insertion opening is flush with the center line of the second blade breaking off the insertion opening.

[0024] The first blade breaking insertion opening includes a first trapezoidal notch 312 and a first square notch 313 ; the second blade breaking insertion opening 34 includes a second trapezoidal notch 341 and a second square notch 342 , and the upper and lower surfaces of the second trapezoidal notch are arc-shaped inclined surfaces 343 .

[0025] The second blade breaking insertion opening of the breaking block is a trumpet-shaped space with a large outer opening and a small inner opening, and the inner small opening is only large enough for the blade to pass through. The upper top and lower bottom of the second trapezoidal notch of the second blade breaking insertion opening are arc-shaped inclined surfaces;

[0026] The first blade breaking insertion opening of the blade fixing part is also in a shape with a large outer opening and a small inner opening, which is convenient for inserting a C-shaped blade, and the inner opening of the first blade breaking insertion opening is tightly connected with the outer opening of the second blade breaking insertion opening of the breaking block. Since the new blade adjacent to the used broken blade is tightly combined with the narrow opening of the blade insertion opening, the new blade adjacent to the used broken blade can be tightly clamped to prevent the new blade from cracking.

[0027] The above-mentioned blade blocking piece can not only prevent the C-shaped blade from being inserted too deeply from the tail of the C-shaped scabbard, but also prevent the broken blade stored in the blade storage bin from sliding out of the hollow structure of the breaking button and the blade fixing part, the hollow structure refers to the second blade breaking insertion port and the first blade breaking insertion port.

[0028] In an embodiment of the utility model, the waste blade storage mechanism 4 includes a waste blade storage bin 401 connected to the breaking space of the blade breaking mechanism, one side of the waste blade storage bin is closed and the other side is open, and a strong magnet 402 is provided at the open end of the waste blade storage bin.

[0029] In the embodiment of the utility model, a magnetic isolation plate 403 made of plastic material is provided at the open end of the waste blade storage bin, and upper and lower slots are respectively provided on the upper and lower parts of the waste blade storage bin, the length of the upper slot 404 is greater than the lower slot 405, and the lower part of the magnetic isolation plate made of plastic material is provided with a lower protrusion for matching with the lower slot, and the maximum width of the magnetic isolation plate made of plastic material matches with the upper slot, and a connecting hole 406 is provided in the middle part of the magnetic isolation plate made of plastic material for matching with a fixing column 407 provided on the side of a strong magnet, and a fixed socket 408 is provided at the front part of the waste blade storage bin, and the fixed socket matches with a plug plate 409 provided at the front part of the strong magnet, and a fixing plate 411 with a fixing hole 410 is also provided on the strong magnet, and the fixing plate is mounted on the inner side of the C-shaped scabbard by screws.

[0030] The above-mentioned magnetic isolation plate is fixed by insertion to block the direct contact between the waste blade and the magnet; the connecting hole arranged in the middle of the magnetic isolation plate is a snap-on circular hole, which is snap-on with the cylinder on the strong magnet wrapped in plastic, so that after the magnetic isolation plate is snap-on, it is not easy to loosen and cannot fall off from the socket.

[0031] In the embodiment of the utility model, the inner side of the C-shaped scabbard is provided with a blade slide groove 101 for the C-shaped scabbard to slide, and the tail end of the C-shaped blade is provided with a blade fixing mechanism 102 for controlling the telescopic movement or locking of the C-shaped blade. After the C-shaped blade is fixedly connected to the slidable blade fixing mechanism, it is slidably installed in the C-shaped scabbard.

[0032] The blade fixing mechanism is a prior art. When the switch is pressed to unlock the blade fixing mechanism, the C-shaped blade can be pushed along the C-shaped scabbard by moving the blade fixing mechanism synchronously. When the switch is released, the blade fixing mechanism can be fixed, thereby limiting the C-shaped blade and fixing it.

[0033] Of course, the blade fixing mechanism can be a different fixing structure, as long as it can fix the blade. When unlocked, the C-shaped blade can move the blade head to the desired position along the C-shaped scabbard. The simplest blade fixing mechanism can fix the C-shaped blade to the C-shaped scabbard via a bolt and nut assembly.

[0034] In the embodiment of the utility model, a tool handle 103 is arranged on the outside of the C-shaped knife pin; the C-shaped scabbard is made of a light hard material, and the external tool handle is an ergonomic finger-grip shape.

[0035] In the embodiment of the utility model, when using: first move the C-shaped blade along the C-shaped scabbard to a suitable position, adjust the length of the C-shaped blade exposed from the opening of the C-shaped scabbard, and when carving is required, adjust a length of breaking the blade, and hold the knife handle to perform carving at will;

[0036] When the first break-off blade at the outermost end is worn out or scrapped, the user unlocks the blade fixing mechanism and inserts the outermost end of the C-shaped blade into the first blade break-off insertion opening and the second blade break-off insertion opening at the tail of the C-shaped sheath; due to the limitation of the blade blocking member, the two outermost blades of the C-shaped blade cannot be inserted further after being inserted into the first blade break-off insertion opening and the second blade break-off insertion opening, and at this time, the outermost old blade 5 enters into the second blade break-off insertion opening, and the new blade 6 adjacent to the old blade enters into the first blade break-off insertion opening;

[0037] The C-shaped blade is limited by the blade fixing mechanism to keep the C-shaped blade fixed, and the breaking block is pressed down, so that the old blade limited in the breaking block is slowly bent downward until the old blade breaks along the blade breaking line; specifically, when breaking, the breaking button is pressed downward, and the lower edge of the lower arc surface on the upper part of the breaking block first contacts and presses down the outer edge of the old blade head far away from the blade breaking line. As the pressure increases, the breaking block moves downward, and the oblique arc surface on the upper part of the breaking block gradually contacts the waste blade to be broken. Since the first blade breaking insertion opening at the tail end of the C-shaped scabbard is wide outside and narrow inside, The new blade at the narrow part of the first blade breaking insertion port plays the role of clamping and stabilizing the C-shaped blade. Continue to press the breaking button downward, and the oblique arc surface in the first blade breaking insertion port is further pressed down to contact with the old blade head, so that the first breaking blade at the head of the C-shaped blade breaks from the first breaking line. If it cannot be broken, continue to press to break the blade, and the other parts of the hollow oblique surface will also put pressure on the blade surface of the first breaking blade, increasing the contact surface between the breaking block and the old blade, and increasing the downward pressure until the breaking blade breaks from the first arc-shaped breaking line.

[0038] The broken old blades fall into the waste blade storage bin and are attracted to the position of the strong magnetic force.

[0039] It is worth mentioning here that after using up multiple C-shaped blades and the storage bin for used blades is gradually full, use a screwdriver to unscrew the screws that fix the strong magnet, remove the strong magnet, and then open the magnetic isolation plate to take out the used blades for centralized processing. The magnetic isolation plate can prevent the used blades from being adsorbed on the strong magnet and difficult to remove. Because the strong magnet is movably connected to the tool body, after unscrewing the screw, the strong magnet can be separated from the tool. At this time, all the blades in the storage bin for used blades can be easily poured into a fixed container, and it can also avoid the strong magnet attracting the blades and causing them to fly up and injure your hands when pouring out the blades.

[0040] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many feasible numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the utility model, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the utility model.

[0041] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0042] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the above utility model include states or shapes that are approximate, similar or close thereto.

[0043] Any component provided by the utility model can be assembled from multiple separate components, or can be a separate component manufactured by an integrated forming process.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A utility knife with a blade that can be safely broken off and automatically stored, characterized in that: The utility model comprises a C-shaped scabbard and a C-shaped blade arranged inside the C-shaped scabbard, a blade breaking mechanism is arranged at the tail of the C-shaped blade pin, and a discarded blade storage mechanism is arranged beside the blade breaking mechanism.

2. A utility knife with a blade that can be safely broken off and automatically stored according to claim 1, characterized in that: The blade breaking mechanism includes a blade fixing part arranged at the tail of the C-shaped scabbard, a first blade breaking insertion port arranged in the middle of the blade fixing part, and a breaking space connected to the first blade breaking insertion port, a breaking block which can slide up and down is arranged in the breaking space, an elastic element is arranged between the lower part of the breaking block and the breaking space, a hollow part is arranged in the middle of the breaking block, a second blade breaking insertion port is arranged in the hollow part of the breaking block, and a blade blocking part is arranged at the output end of the second blade breaking insertion port.

3. A utility knife with a blade that can be safely broken off and automatically stored according to claim 2, characterized in that: The first blade breaking insertion opening includes a first trapezoidal notch and a first square notch; the second blade breaking insertion opening includes a second trapezoidal notch and a second square notch, and the upper and lower surfaces of the second trapezoidal notch are arc-shaped inclined surfaces.

4. A utility knife with a blade that can be safely broken off and automatically stored according to claim 1, characterized in that: The waste blade storage mechanism comprises a waste blade storage bin connected to the breaking space of the blade breaking mechanism, the waste blade storage bin is closed on one side and open on the other side, and a strong magnet is arranged at the open end of the waste blade storage bin.

5. A utility knife with a blade that can be safely broken off and automatically stored according to claim 4, characterized in that: A magnetic isolation plate made of plastic material is arranged at the open end of the waste blade storage bin, and upper and lower slots are arranged on the upper and lower parts of the waste blade storage bin respectively, the length of the upper slot is greater than the lower slot, the lower part of the magnetic isolation plate is provided with a lower protrusion for matching with the lower slot, the maximum width of the magnetic isolation plate matches with the upper slot, and a connecting hole is arranged in the middle part of the magnetic isolation plate for matching with the fixing column arranged on the side of the strong magnet, a fixed socket is arranged at the front part of the waste blade storage bin, and the fixed socket matches with the plug plate arranged at the front part of the strong magnet, and a fixing plate with a fixing hole is also arranged on the strong magnet, and the fixing plate is installed on the inner side of the C-shaped scabbard by screws.

6. A utility knife with a blade that can be safely broken off and automatically stored according to claim 1, characterized in that: The inner side of the C-shaped scabbard is provided with a blade sliding groove for the C-shaped scabbard to slide, and the tail end of the C-shaped blade is provided with a blade fixing mechanism for controlling the telescopic movement or locking of the C-shaped blade.

7. A utility knife with a blade that can be safely broken off and automatically stored according to claim 1, characterized in that: A tool handle is arranged on the outer side of the C-shaped tool pin.

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