JP3039541U - Multi-functional cutter knife with easy blade attachment and detachment - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a multifunctional cutter knife with which a blade can be easily attached and detached. SOLUTION: A set of elastic locking devices provided at the position of the blade holding part, a set of clamping plate devices for simultaneously enclosing the blade and one clamping piece, and a pair of clamping plate devices attached to the tail end of the handle of the main body, respectively. It is said that the horizontal horizons, the impact steel pieces, and the screwdriver head mounting holes allow safe and quick attachment / detachment of the blade of the cutter knife, and can also provide the appropriate functions required for the work associated with the use of the cutter knife. .

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of cutter knife, and in particular, it is easy to attach and detach the blade and has multiple functions.It has a set of elastic locking devices provided at the position of the blade holding part, and a blade and one holding piece. A pair of clamping plate protection devices that enclose at the same time, a horizontal mount attached to the tail end of the handle of the main body, an impact steel piece, and a screwdriver head mounting hole for safe and quick attachment and detachment of the blade of the cutter knife. The present invention relates to a convenient cutter knife that can be used for various purposes and can provide appropriate functions required for operations associated with the use of the cutter knife, that is, it has a wide range of applications and extremely good operational safety.

[0002]

[Prior art]

 Generally, cutter knives are divided into two types: stationery type and industrial type. Among them, the stationery type is a student or office supplies for cutting paper pieces, and the blade is a long strip shape with multiple pieces connected. After the front edge blade is worn away, the front edge blade can be broken off and the next blade can be used. Industrial-type cutter knives are widely used in various fields such as wallpaper, tiles, rugs, furniture, and carvings. Since the material to be cut is not as fragile as paper, its blade is a two-piece type. , It was constructed by being strongly sandwiched between the casings using screws. The blade piece is relatively thick and heavy, and is designed in a trapezoidal shape, and two cutting grooves are provided above it, and one insertion block is fitted in the cutting groove, and the blade is moved by thrusting the insertion block. It was exposed from the blade holding part or was contracted into the blade holding part. In designing such a cutter knife, it is important that it can withstand a relatively large cutting force, and therefore, in terms of blade control and positioning, there are the following use and manufacturing problems. It was 1. A person who has a retractable blade does not need the step of attaching and detaching the blade before and after each use, but the design that propels the blade by using the fitting with the insertion block is structurally However, the operability is affected by the fact that the optimum positioning is not made during the process of cutting and the action of the blade and the blade during the process of cutting. It was On the other hand, the one that is fixed to the blade holding part by the method of sandwiching the blade can reliably maintain the cutting quality because the blade is fixed, but it needs to be removed when the use of the blade is completed, at that time, The sharp blade may injure the user, and the biggest drawback in use is that the blade must be attached and detached before and after each use. 2. The above-mentioned two-piece blades that are opposed to each other and are fixed with screws are expansion-contracting blades, and even when a worn blade is replaced, it is a fixed blade and can be detached before and after use. However, in both cases, it was necessary to loosen the bolt and remove the blade from the blade holder, and it was necessary to attach the blade by the opposite operation, which was extremely inconvenient to use. 3. Since the blade of a cutter knife is extremely sharp, it is usually designed so that only the tip of the blade is exposed, in order to ensure stable cutting operation with the blade. Therefore, when attaching and detaching the blade, there is not much part to be gripped by hand, so it is necessary to be careful in handling the blade in the replacement operation, and there is a problem from the viewpoint of safety. 4. There are many types of cutter knives that can be used for cutting or sawing at present, but when the person actually performing the interior work uses such a knife, horizontal calibration, punching, or screw attachment / detachment is required. Since it requires complicated operations such as a horizontal level, tools such as a nail weight and a screwdriver head, it is necessary to carry a tool to be used in combination with the cutter knife during the work process. And there was inconvenience in use.

[0003]

[Problems to be solved by the device]

 In view of the design drawbacks in terms of attaching and detaching the blade of a conventional cutter knife and the limitations of its application, the present invention provides a set of elastic locking devices on the blade holding part of the cutter knife. The elastic locking device can be moved up and down so that it can be inserted directly into the locking groove at the top of the blade to fix the blade, and the fixed blade can be released. The challenge is to provide the user with the best blade gripping area so that the blade can be replaced quickly and safely.

Further, the present invention is characterized in that, in the cutter knife, the holding plate device is used to sandwich the blade and one sandwiching piece, and the blade is coupled by the sandwiching piece to quickly lock the blade. In addition to making it possible, it is an object to be able to achieve a different cutting action by making the blade replaceable with a rotary blade for glass.

Further, the present invention allows the cutter knife to be used not only for simple cutting operation but also for mounting a device such as a horizontal sword, a struck steel piece, and a screwdriver head on the main body of the cutter knife so that the range of use of the cutter knife is increased. The subject is to expand it appropriately and make it convenient for users to perform the related work.

[0006]

[Means for Solving the Problems]

 According to the invention of claim 1, a pair of elastic locking devices are provided on a cutter knife body in which two corresponding handle parts and two blade holding parts are connected so as to face each other. The device consists of a rotary lid, a blade pushing post, a spring and a bolt, in which the blade pushing post and the spring are located inside the blade holder, and the rotary lid and the bolt are outside the blade holder and have an arched mounting plate. And a pair of clamping plates located on a concave surface that descends from both sides thereof, and that the rotary lid can synchronously raise or lower the blade pressing column to cause the blade pressing column to lock or release the clamping piece. Between the holding plate having a concave surface and a plurality of elastic insertion pins provided with grooves formed inside, and another holding plate having a fitting hole corresponding to the elastic insertion pins. , One clamping piece and one blade are clamped, or one One holding piece and one glass cutting rotary blade are sandwiched, one horizontal mount, one fixed groove formed on the handle, and one steel piece. The one that fits tightly in the mounting groove on the two sides of the heart-shaped handle tail, and one hexagonal fitting hole that is formed on the center line that is the abutting surface of the two handle tails, and that fits the above steel pieces. According to this, a screwdriver head can be attached, and a multi-functional cutter knife with the above can be attached and detached easily.

According to a second aspect of the present invention, there is provided a multi-functional cutter knife according to the first aspect, in which the blade can be easily attached and detached, in which a support piece is formed on two lower sides of the rotary lid, and the support piece is By supporting the rotary lid on the mounting plate above the blade holding part when the rotary lid is pulled up and rotated, the engagement between the two locking grooves of the pinching pieces of the two column feet below the blade pushing column is performed. It is a multi-functional cutter knife with a blade that can be easily attached and detached.

A third aspect of the present invention is a multi-functional cutter knife according to the first aspect of the present invention, in which the blade can be easily attached and detached, in which a support piece is formed on two lower sides of the rotary lid, and the support piece is When the rotary lid is rotated and then descends, the rotary lid is supported on the descending concave surface on the two sides of the mounting plate above the blade holding part, and the two clamp feet of the two pillar legs below the blade pushing pillar are supported. It is a multi-functional cutter knife with which the blade can be easily attached and detached, which is characterized by completing the locking with one locking groove.

According to a fourth aspect of the present invention, there is provided a multi-functional cutter knife according to the first aspect of the present invention, in which the blade can be easily attached and detached. The width and thickness are the same as those of the sandwiching piece, and after the sandwiching pieces are fitted together, one flat surface is formed on the inner surface of the sandwiching plate, which is a multi-function with easy blade attachment / detachment. It is a cutter knife.

According to a fifth aspect of the present invention, there is provided a multifunctional cutter knife according to the first aspect, in which the blade can be easily attached and detached, in which the sandwiching piece to be sandwiched between two sandwiching plates and the blade, and the latter stage of the sandwiching piece are: The multifunctional cutter knife has a feature that it is exposed from the rear side of the sandwich plate and the edge of the front end of the blade is exposed from the front side of the sandwich plate.

According to a sixth aspect of the present invention, there is provided a multifunctional cutter knife according to the first aspect, in which the blade can be easily attached and detached, in which an elastic insertion pin formed on a holding plate has two upper and lower engaging convex rings. It is a multi-functional cutter knife that is easy to attach and detach because it is provided.

According to a seventh aspect of the present invention, there is provided a multi-functional cutter knife according to the first aspect, in which the blade can be easily attached and detached, in which a concave surface having an insertion hole is correspondingly formed at the front ends of the two holding plates. It is a multifunctional cutter knife that can be attached and detached with a single rotary blade for glass cutting.

The invention of claim 8 is a multi-functional cutter knife according to claim 1, wherein the blade can be easily attached and detached, and the recesses that can be used for breaking a hard article after slitting are two clamping plates and a clamping piece. The multi-functional cutter knife has a recess that is formed under the blade to allow easy attachment and detachment of the blade.

According to a ninth aspect of the invention, there is provided a multi-functional cutter knife according to the first aspect of the present invention, in which a blade is easily attached and detached, and a door plate capable of opening and closing a space formed after the handle portions are joined so as to face each other. The multifunctional cutter knife is provided, and the blade and the screw driver head can be housed in the space, and the blade can be easily attached and detached.

[0015]

[Embodiment of the invention]

 The present invention is a kind of cutter knife that can be quickly attached and detached and can have a multi-functional form.In particular, the blade can be quickly attached and detached without removing the parts of the body of the cutter knife. It is provided as a safety device when the user holds the blade by enclosing it with two clamping plates. Furthermore, a leveler, a struck steel piece, and a screw driver head mounting hole are installed on the main body. In particular, the present invention is provided with a set of elastic locking devices consisting of a rotary lid, a blade pressing column and a spring above the blade holding part, and the raised and lowered motion of the blade holding part directly locks the placed blade or The blade can be released, and the elastic locking device is provided when the two fitting grooves provided on the upper end of the sandwiching piece that is simultaneously encapsulated in the two corresponding sandwiching plates are provided in the blade holding portion. Positioned in a locking position that corresponds to the position of the screwdriver head, it can be easily and accurately positioned, and a horizontal mount is attached to one side of the handle of the main body, an abutting steel piece is attached to the tail end of the handle, and A hexagonal fitting hole to which a driver head can be attached is provided, and in this way, the blade can be quickly attached and detached, has a safety protection action, and is a versatile cutter knife.

[0016]

【Example】

 The present invention is a kind of multi-functional cutter knife with easy blade attachment / detachment, which is used to quickly attach / detach the blade to / from the cutter knife body by locking and releasing the inserted blade on the cutter knife. An elastic locking device provided in the blade holding part and the blade can be attached and detached without wrapping the outside of the blade without directly touching the blade of the user's finger, and at the same time, the blade is for cutting glass. It is equipped with a clamping plate device that can be replaced with a rotary blade, a horizontal knife provided on the main body of the cutter knife and the tail of the handle, a multipurpose auxiliary device that includes an attack steel piece and a screwdriver head mounting hole, and quickly, It is a cutter knife that can be safely attached and detached, and has a wide range of applications.

As shown in FIG. 1, the body of the cutter knife of the present invention has two corresponding handle parts 11, 12 and two blade holding parts 13, 14 with front screw holes 15, 151 and rear screw holes. The handle parts 11, 12 and the blade holding parts 13, 14 are separated by an integrally formed partition plate 17 and are connected to each other through the holes 16, 161. One space 18 is formed. Corresponding mounting plates 21 and 22 are provided at the front ends of the blade holders 13 and 14 in an arcuate shape, and the mounting plates 21 and 22 and the outer descending concave surfaces 23 and 24 form a step-like shape, and Has perforations 25 and 26 that can form a single through hole when joined facing each other. An elastic locking device including a rotary lid 31, a blade pressing column 32, a spring 33 and a bolt 34 is attached to the mounting plates 21 and 22. The blade clamping plate device used to connect with the elastic locking device is two clamping plates 41 and 42, one clamping piece 50 and one blade 60 having the same width, or one clamping piece 50 and a glass. The rotary blade for cutting 70 is sandwiched. The handle tail portion 80, which is manufactured in a true manner, has two mounting grooves 81, 82 formed on the two sides, and one U-shaped steel piece 83 is connected to the mounting groove 81, 82 at the same time. There is a hexagonal fitting hole 84 formed by butting in the block body of the handle tail portion, and a screw driver head 85 can be inserted into the hexagonal fitting hole 84.

The present invention is a combination of the above-mentioned components. The elastic locking device at the front end of the blade holding part is such that the spring 33 is fitted to the blade pushing column 32 and is placed inside the blade holding part. The blade pushing post 32 is positioned between the two position limiting pieces 27, and the shank of the blade pushing post 32 penetrates the perforations 25 and 26 between the mounting plates 21 and 22 and the perforation 35 of the rotary lid 31, and the bolt 34. Is screwed into the screw hole 37 at the end of the shank, and at this time, the rotary lid 31 located above the mounting plates 21 and 22 is attached to the outside of the mounting plates 21 and 22 by the bearing pieces 311 formed on the two lower sides thereof. By sandwiching the concave surfaces 23 and 24 of the blade, the blade pressing column 32 is in the descending position by receiving the counter pressure of the spring 33, and the rotary lid 31 is pulled up and rotated 90 degrees, so that the lower part of the lower portion of the rotating lid 31 is rotated. The two support pieces 311 are placed sideways and When pushing above the attachment plates 21 and 22, the blade pushing column 32 rises to a raised position, and the blade pushing column 32 goes up and down to a different position by the pulling rotation of the rotary lid 31 or the releasing operation after the rotation. The two pillar legs 321 that are positioned and formed below them are inserted into the locking groove 51 at the upper end of the sandwiching piece 50, whereby the quick locking and releasing control is advanced.

In the sandwiching plate device, one concave surface 45 and a plurality of elastic insertion pins 44 provided with grooves 43 are formed inside the sandwiching plate 41, and a sandwiching piece 50 of equal width and thickness is formed in the concave surface 45. The corresponding fitting holes 54 on the holding pieces 50 are received and fitted on the elastic insertion pins 44, and at this time, one flat surface is formed inside the holding plate 41, and the blade 60 and the other holding plate 42 are formed. Are sequentially fitted through the fitting holes 47 and 64 onto the elastically inserting pins 44 to complete the entire holding plate device combination. The sandwich plate device with the completed combination is shown in FIG. The rear stage of the gripping piece 50 having the locking groove 51 is exposed from the rear of the two sandwiched gripping plates 41 and 42, so that when the gripping plate device is inserted into the blade holding portion of the cutter knife, the gripping plate 41 is inserted. , 42 are pushed to the front end of the blade holding portion, the locking groove 51 is located below the column foot 321 of the blade pushing column 32 in the elastic locking device, and when the blade pushing column 32 descends. The engagement of both is completed. At this time, the front stage provided with the edge 61 of the blade 60 is exposed from the front ends of the sandwiching plates 41 and 42, and is in a state capable of being cut. The holding plates 41, 42, the holding piece 50, and the recesses 46, 48, 56, 66 formed under the blades 60 are used to cut and cut a hard material such as glass after cutting. .

In the above-mentioned holding plate device, the blade 60 thereof can be removed if necessary, and instead, one glass cutting rotation is provided on the concave surfaces 71, 72 having the insertion holes 73 at the front ends of the two holding plates 41, 42. By sandwiching the blade 70, different cutting actions can be exercised. At the time of replacement, the upper and lower two locking convex rings 441, 442 formed on each elastic insertion pin 44 lock the clamping plate 42, that is, when the blade 60 is clamped, the locking convex rings 441, 442 are used. When the glass cutting rotary blade 70 is sandwiched by locking with the ring 441 and removing the blade 60, the holding plate 42 is locked with another locking convex ring 442.

Please refer to FIGS. 1 and 3 for the handle tail device of the present invention. One horizontal groove 29 is housed in one fixing groove 28 formed in the connecting portion of the handle portion 11 and the blade holding portion 13. The leveler 29 is installed with the upper ends of the handle 11 and the blade holder 13 which are horizontal as a horizontal reference plane, and when used, the levelness can be measured by simply placing the cutter knife on the opposite side. Further, one U-shaped steel piece 83 is tightly fitted into the mounting grooves 81 and 82 formed on the two sides of the handle tail portion 80 which is designed to be true, and the U-shaped steel piece 83 is attached to the handle tail portion. Add a proper attack function to 80. On the centerline of the handle tail portion 80, the screwdriver head 85 is directly fitted into the hexagonal fitting hole 84 formed after the fitting, which can be used for screw attachment / detachment. The hexagonal fitting hole 84 can obtain a tight clamping force by the U-shaped steel piece 83 being clamped, and the torque of the screw driver head 85 can be increased. Various different types of screwdriver heads 85 and the removed blades can be housed in a space 18 formed in the handles 11, 12 which are suitably sealed by a single door plate 19.

[0022]

[Effect of the invention]

 As described above, the blade holding portion of the cutter knife of the present invention is provided with a pair of elastic locking devices, and the blade pushing column 32 thereof has entered the outside as the rotary lid is moved up and down. With respect to the sandwiching piece 50 exposed to the outside, the locking or unlocking proceeds promptly. In the sandwiching plate device, when the sandwiching piece 50 is most pushed into the blade holding portion, the two locking grooves 51 of the sandwiching piece 50 accurately reach the position below the column foot 321 of the blade pushing column 32, that is, the locking position. The sandwiching plates 41, 42 are sandwiched by exchanging the blade 60 and the glass-cutting rotary blade 70, and are adapted to different needs. In particular, the design in which the blade 60 is covered with the two holding plates 41, 42 is such that when the elastic locking device is combined and the blades are quickly attached and detached, the fingers of the user hold the holding plates 41, 42. By gripping, it prevents direct contact with the blade and therefore provides the best possible security for the user. At the same time, since the leveler 29, U-shaped steel piece 83 and screw driver head mounting hole 84 are provided on the handle, the present invention has the advantages of quick blade attachment / detachment, security, and replacement with a different blade. Not only that, it can be used to solve various related problems that may be encountered during operation, and can improve the shortcomings of the conventional cutter knife.

[Brief description of the drawings]

FIG. 1 is a three-dimensional perspective view of a combined state of the present invention.

FIG. 2 is a cross-sectional view showing a combined state of the blade holding plate device and the blade holding portion of the present invention.

FIG. 3 is an external perspective view of the present invention as viewed from the rear side of the handle.

[Explanation of symbols]

 11, 12 Handle part 13, 14 Blade holding part 15, 151 Front screw hole 16, 161 Rear screw hole 17 Separation plate 18 Space 19 Door plate 21, 22 Mounting plate 23, 24 Concave surface 25, 26 Perforation 27 Position limiting piece 28 Fixing groove 29 Horizontal Mount 31 Rotating Lid 311 Supporting Piece 32 Blade Pushing Column 321 Pillar 33 Spring 34 Bolt 35 Drilling 37 Screw Hole 41, 42 Holding Plate 43 Groove 44 Elastic Insertion Pin 441, 442 Locking Convex Ring 45 Concave 46, 48, 56, 66 Recesses 47, 64 Fitting hole 50 Clamping piece 51 Locking groove 60 Blade 61 Edge 70 Rotating blade for glass cutting 73 Insertion hole 80 Handle tail 81, 82 Mounting groove 83 U-shaped steel piece 84 Hexagonal fitting hole 85 Screw driver head

Claims (9)

[Utility model registration claims] 1. A set of elastic locking devices is provided on a cutter knife body in which two corresponding handle parts and two blade holding parts are connected so as to face each other, and the elastic locking device is provided with: It consists of a rotary lid, blade push post, spring and bolt, of which the blade push post and spring are located inside the blade holder, and the rotary lid and bolt are outside the blade holder and have an arched mounting plate and both sides. A pair of clamping plate devices, which is located on a concave surface further descending, and in which the rotary lid can synchronously raise or lower the blade pressing column to cause the blade pressing column to lock or release the clamping piece, One holding piece between a holding plate having a concave surface, a plurality of elastic insertion pins having grooves formed inside, and another holding plate provided with a fitting hole corresponding to the elastic insertion pins. And one blade is clamped or one clamp and one With a glass cutting rotary blade sandwiched between it, one horizontal mount that is mounted in one fixed groove formed in the handle, and one steel piece that is a real-heart handle One that fits tightly into the mounting groove on the two sides of the tail and one hexagonal fitting hole that is formed on the center line that is the abutting surface of the two handle tails. A multi-functional cutter knife with a head attached and the above with easy blade attachment and detachment. 2. The multifunctional cutter knife according to claim 1, wherein the blade is easily attached and detached, in which a bearing piece is formed on two lower sides of the rotary lid, and the bearing piece pulls up the rotary lid. By supporting the rotary lid on the mounting plate above the blade holding part when it is rotated, it is possible to release the locking of the two clamping feet of the two pillar legs below the blade pushing pillar to the two locking grooves. A multi-function cutter knife that features easy blade attachment and detachment. 3. A multi-functional cutter knife according to claim 1, wherein the blade is easily attached and detached, in which a support piece is formed on two lower sides of the rotary lid, the support piece rotating the rotary lid. Then, when it descends, the rotary lid is supported on the descending concave surface on the two sides of the mounting plate above the blade holding part, and the engagement between the two locking grooves of the clamping pieces of the two pillar legs below the blade pushing pillar is carried out. A multi-purpose cutter knife with a blade that can be easily attached and detached. 4. The multifunctional cutter knife according to claim 1, wherein the blade is easily attached and detached, in which the width and thickness of the concave surface of the holding plate having one concave surface in the holding plate device and the holding A multi-purpose cutter knife with which a blade can be easily attached and detached, which is the same as that of one piece, and one plane is formed on the inner side surface of the sandwiching plate after the sandwiching pieces are fitted together. 5. The multifunctional cutter knife according to claim 1, wherein the blade can be easily attached and detached, in which the sandwiching piece sandwiched between two sandwiching plates and the blade, and the latter stage of the sandwiching piece is from the rear side of the sandwiching plate. A multi-functional cutter knife that is easily attached and detached, which is exposed and the front edge of the blade is exposed from the front side of the sandwich plate. 6. The multi-functional cutter knife according to claim 1, wherein the blade can be easily attached and detached, wherein the elastic insertion pin formed on the holding plate is provided with two upper and lower engaging convex rings. A multi-functional cutter knife with easy blade attachment and detachment. 7. The multifunctional cutter knife according to claim 1, wherein the blade is easily attached and detached, in which a concave surface having an insertion hole is correspondingly formed at the front ends of the two holding plates to form one glass. A multi-purpose cutter knife with a cutting blade that can be attached and detached easily. 8. The multifunctional cutter knife according to claim 1, wherein the blade can be easily attached and detached, and a recess that can be used for breaking a hard article after slitting is provided below the two clamping plates, the clamping piece, and the blade. A multi-functional cutter knife with correspondingly formed recesses for easy blade attachment and detachment. 9. The multi-functional cutter knife according to claim 1, wherein the blade is easily attached and detached, and a door plate that can open and close a space formed after the handle portions are joined so as to face each other is provided in the space. A multi-functional cutter knife that can accommodate the blade and screw driver head and is easy to attach and detach.