TWM478597U - Gravity type working knife - Google Patents

Description

Gravity working knife

The present invention provides a gravity type working knife, which is a working knife for cutting a thicker material, in particular, a simple snap structure, which can easily combine a sheath and a preparation knife to the working knife. Up, and get the convenience of assembly and disassembly.

Please refer to No. 094219776, "Grabbing Exit Structure of Gravity Utility Knife" (hereinafter referred to as the first conventional case). This first customary method is different from the general utility knife, but can be used to cut thicker materials. Such as carpets, wallpapers, plastic panels. . . Etc., that is, it must have a relatively solid structure to cover the blade, so that the blade can be firmly worked on the object to be constructed. Although the first conventional case has the function of facilitating the retraction, the blade is coated. The two seats are connected to each other. When cutting thick materials such as carpets, wallpapers, and plastic sheets, the strength is still insufficient.

Please refer to the "Protected Knife Improvement" (hereinafter referred to as the second conventional case) in the 090212804. This second conventional case is a utility knife with a pre-reservable spare blade, which has the effect of facilitating blade replacement. However, the number of components it constitutes is large, and it takes a lot of time to assemble it.

Please refer to the 096200995 "Machine Knife Spare Knife Device" (hereinafter referred to as the third customary case), which is also a utility knife with a pre-reservable spare blade, the number of components formed by it. Although there is a substantial reduction, The convenience and firmness of its assembly still lacks and needs to be improved.

Based on the shortcomings of the above-mentioned traditional utility knife, the creator is based on the wish of benefiting the society, researching and making sample tests, and through repeated tests and improvements, the creation of the following creative purposes is born.

That is, the main purpose of the creation is to make the body of the working knife into a plastic injection molding method, so that the grip portion of the knife body and the knife portion form a shape with an obtuse angle, which is easy to hold and exert force. And has a relatively strong covering structure, when the working knife works, the best exerting effect can be exerted.

The secondary purpose of this creation is to use a simple snap-on structure, which is placed in the knife part of the working knife, and can be combined with a sheath that can be easily loaded and unloaded, and the blade can be wrapped on the inner side to prevent the blade from hurting. The situation.

Another purpose of the creation is to use a simple snap-on structure to combine the grip of the working knife with a ready-to-handle knife, and the new blade can be replaced at any time after the blade is passivated.

In order to achieve the above-mentioned creative purpose, the improved feature of the present invention is that the gravity type working knife system comprises a grip portion and a knife portion, and the grip portion and a knife portion are integrally formed by injection molding of a plastic piece, and the knife portion is formed. Forming an obtuse angle with the grip portion, the front end surface of the knife portion simultaneously forms a concave slot for inserting a blade, and the blade is partially exposed outside the slot, and can be protected The sleeve is disposed on the exposed blade, and the sleeve and the slot have a buckle structure that can be lightly coupled, so that the sheath and the knife portion are easily assembled or disassembled; the bottom end surface of the grip portion is simultaneously Form an in-depth accommodation The groove can be placed into a spare knives, and the preparation knives and the accommodating grooves have a snap-fit structure that can be lightly coupled, so that the preparation knives and the grips are easily assembled or disassembled, and the preparation knives are formed. a plurality of lengths of the crotch portion, the crotch portion is formed with a receiving groove for arranging a plurality of spare blades; the upper end surface of the knife portion is formed with a plurality of first grooves and second grooves, and each blade The position of the upper end surface relative to the first groove and the second groove is also formed by a third groove and a fourth groove, and the upper end of the blade portion is provided with a yaw displacement. The first bottom block and the second buckle block are formed on the bottom surface of the buckle block, and the first buckle block and the second buckle block are arranged when the buckle block is pressed down. The first groove, the third groove, and the second groove and the fourth groove which overlap each other are inserted to fix the blade without falling out.

The gravity type working knife forms an obtuse angle by the grip portion and the knife portion, and is easy to hold and apply force, and is attached to the knife portion of the working knife by a lightly coupled buckle structure. In combination with the upper jacket which can be easily loaded and unloaded, the blade can be wrapped on the inner side to prevent the blade from injuring the person. At the same time, the buckle structure of the working knife can be combined by a lightly coupled buckle structure. The last one can be easily loaded and unloaded, and the new blade can be replaced at any time after the blade is passivated.

20‧‧‧Working knives

21‧‧‧Tool body

211‧‧‧ grip

212‧‧‧Mask Department

213‧‧‧ accommodating slots

2131‧‧‧Bevel

214‧‧‧ recessed hole

215‧‧‧first groove

216‧‧‧second groove

217‧‧‧ slots

2171‧‧‧Bevel

218‧‧ ‧ guiding groove

219‧‧‧ card slot

22‧‧‧ Snap block

221‧‧‧Perforation

222‧‧‧Perforation

223‧‧‧ first clasp

224‧‧‧Second buckle

23‧‧‧ Rivets

24‧‧‧blade

241‧‧‧Knife

244‧‧‧ Sharp Department

242‧‧‧ third groove

243‧‧‧fourth groove

25‧‧‧ sheath

251‧‧‧Slot

252‧‧‧Extension

253‧‧‧ card block

254‧‧‧Perforation

26‧‧‧ Preparation of knives

261‧‧‧匣

262‧‧ ‧Class Wall

263‧‧‧Slot

264‧‧‧ notch

265‧‧‧Bumps

266‧‧‧镂空部

267‧‧‧镂空部

The first picture is a three-dimensional exploded view of the creation.

The second picture is a three-dimensional assembly diagram of the creation.

The third figure is another three-dimensional assembly drawing of the present creation.

The fourth and fifth figures are schematic diagrams of the action of the blade fixed structure of the present invention.

The sixth drawing is a schematic cross-sectional view of the AA of the second figure.

The seventh figure is a schematic cross-sectional view of the BB at the second figure.

The eighth figure is a schematic cross-sectional view of CC at the third figure.

The ninth figure is a schematic cross-sectional view of the DD at the third figure.

The tenth figure is a schematic diagram of the state of use of the present creation.

In order to enable the reviewers and those skilled in the art to have a better understanding of the creation and implementation of the work, the following examples are given, together with the drawings, detailed descriptions are as follows, but this embodiment is only for the purpose of explanation. It is not intended to limit the implementation of this creation. The implementation of this creation in the future is not limited to this. Any improvement based on the technical characteristics of this creation is bound by this creation.

Referring to the first to ninth drawings, the gravity type working blade 20 of the embodiment includes a blade body 21, a sheath 25, a preparation blade 26, and a plurality of blades 24; wherein the blade body 21 is The plastic injection molding has a knife portion 212 and a grip portion 211. The knife portion 212 and the grip portion 211 have an obtuse angle. The upper end surface between the knife portion 212 and the grip portion 211 is The bottom surface is formed into a wavy appearance; the front end surface of the knife portion 212 is formed with a deep groove 217, and the bottom edge of the slot 217 is formed as a sloped oblique side 2171. The slot 217 is formed with a guiding slot 218 toward one of the inner wall surfaces. The guiding slot 218 is shallower than the slot 217. The width of the guiding slot 218 is narrower than the slot 217 and is located in the slot 217. In the middle position, the bottom edge of the guiding groove 218 is further formed with a groove 219 deeper toward the wall surface toward the same inner wall surface; the upper end surface of the blade portion 212 is formed with two spaced first grooves 215 and second a groove 216, the first groove 215 and the second groove 216 are in communication with the slot 217, and the other side of the blade portion is provided with a through hole 2121. The rivet 23 may be a block 22 engaging a pivot shaft 212 in the opposite blade portion The end surface of the fastening block 22 is generally formed in a shape, and the two sides are respectively provided with a through hole 221, 222 for the rivet 23 to be pivoted with respect to the through hole 2121, and the fastening block 22 can be placed The inner surface of the fastening block 22 is formed with a first buckle 223 and a second fastening block 224 extending downwardly. The fastening block 22 abuts against the upper end surface of the knife portion 212. The first fastening block 223 and the second fastening block 224 can be inserted into the corresponding first recess 215 and the second recess 216; the bottom end surface of the grip portion 211 is formed with a deep receiving slot 213. The bottom edge of the accommodating groove 213 is formed as an inclined bevel 2131. One of the inner wall surfaces of the accommodating groove 213 forms a concave recess 214 (as shown in FIG. 8).

The front end of the preparation blade 26 can be inserted into the receiving groove 213 of the blade body 21, and one end thereof is formed into a flat shape and a forwardly extending crotch portion 261. The crotch portion 261 forms a class with the other end. The wall 262 has a recessed sipe 263 formed on one of the sides of the shank 261 for receiving the spare blade 24. The shape of the sipe 263 is formed into a trapezoidal shape in accordance with the shape of the blade 24. One of the corners forms a connected recess 264. The recess 264 is designed to facilitate the use of the spare blade 24, and the other side of the flange 261 is formed to have an arc angle. The small bumps 265 are formed on both sides of the small bumps 265 to form hollow portions 266 and 267, so that the small bumps 265 can be elastically reciprocally displaced when the force is not applied or unstressed. The shank portion 261 is insertable into the accommodating groove 213 and abuts against the oblique side 2131 of the accommodating groove 213. When the step wall 262 simultaneously abuts against the bottom end surface of the blade body 21, the small bump 265 is just It can be inserted into the notch 264, and the preparation blade 26 can be lightly combined with the blade body 21 without falling.

The sheath 25 is generally a triangular body, and one end surface thereof is formed with a deep slot 251 for insertion of the front end of the blade 24, and the side end surface of the slot 251 is located toward the guide groove of the blade portion 212. In the direction of 218, a partially raised extension piece 252 is formed, and the end edge of the extension piece 252 faces the card slot 219 of the blade portion 212 to form a convex block 253. The block 253 is formed. Formed as a guide arc angle, the sheath 25 is provided with a through hole 254 extending in a diagonal direction with respect to the slot 251, and the through hole 254 is in communication with the slot 251.

The plurality of blades 24 are generally formed in a trapezoidal metal sheet, and the outer sides of each of the blades 24 are formed as oblique sides which are inclined outward, and the bottom edge is ground into a sharp blade portion 241, and the top edge thereof forms two spaces. The third groove 243 and the fourth groove 244 are inserted into the slot 217 and abut against the oblique side 2171 of the bottom edge of the slot 217, and the third groove 242 and the fourth groove of the blade 24. 243 is just overlapped with the first groove 215 and the second groove 216 of the blade portion 212. The blade 24 is inserted into the slot 217 except one of the blades 24, and the remaining blades 24 are placed in the preparation blade. The 匣 26 is placed in the sipe 263.

Please continue to refer to the fourth to sixth figures. The blade 24 of the gravity type working blade 20 of the present embodiment is inserted into the slot 217 to abut the bevel 2171 of the bottom edge of the slot 217. The front end of the 24 is exposed on the outside of the slot 217, and the third recess 242 and the fourth recess 243 of the blade 24 overlap the first recess 215 and the second recess 216 of the blade portion 212 by the shaft. The fastening block provided with the knife portion 212 can be swayed in a fan shape. When the fastening block 22 abuts against the upper end surface of the knife portion 212, the first fastening block 223 and the second fastening block 224 are in the shape of an arc. While swinging, due to the third groove 242 of the blade 24, The four recesses 243 and the first recesses 215 and the second recesses 216 of the blade portion 212 are both upright, and the first and second latches 223 and 224 are also upright. When the first buckle 223 and the second buckle 224 enter the first groove 215, the second groove 216, the third groove 242, and the fourth groove 243 in an arc shape, the first buckle 223, The bottom edge of the second buckle 224 is blocked by the groove of the first groove 215 and the second groove 216, and then applied to the fastening block 22, the plastic material of the fastening block 22 can be slightly deformed. Forcibly inserting into the third groove 242 and the fourth groove 243 of the blade 24, and positioning the blade 24, so that the blade 24 can not fall off, and can work normally, and can be used normally when not in use. The sleeve 25 encloses the protruding end of the blade 24, as shown in the ninth figure, the slot 251 of the sheath 25 is inserted into the protruding end of the blade 24, and the extension of the sheath 25 The sheet 252 is simultaneously inserted into the guide groove 218. When the sheath 25 abuts against the front end surface of the knife portion 212, the block 253 is just inserted into the card slot 219 to form a click state, and the sheath 25 is formed. And knife part 2 12 light force combination, the sharp portion 244 of the blade 24 is located at the perforation 254, without the occurrence of bluntness, thereby preventing the blade 24 from inadvertently cutting the human condition, and wanting to use the work When the knife 20 is used, the sheath 25 is pulled out to the outside only by a slight force. The card block 253 is formed into an arc-guiding angle, and the block 253 can be easily removed from the jamming state of the card slot 219. The sleeve 25 is removed. Please refer to the tenth figure. The gravity type working blade 20 of the embodiment has an obtuse angle between the blade portion 212 and the grip portion 211, which is convenient for the user to hold and apply force. .

Please refer to the second, third, fourth, seventh, and eighth diagrams again. After the gravity type working blade 20 of the embodiment is passivated by the blade 24 in use, the blade 2 can be prepared. The spare blade 24 of 8 is replaced, and a side of one side of the top portion 261 of the preparation blade 26 is formed with a protrusion 265, and both sides of the position of the protrusion 265 are formed as a hollow portion 266. 267, and the shank portion 261 is a plastic material which can be slightly deformed. When the protrusion 265 is stressed or unstressed, the protrusion 265 can be slightly reciprocally elastically stretched. When the shank portion 261 is inserted into the accommodating groove 213, When the front end abuts against the oblique side 2131 of the receiving groove 213, the protruding piece 265 is inserted into the recessed hole 214 to be in a jammed state, so that the preparation blade 26 and the blade body 21 are lightly coupled, when the blade is to be removed. When the boring tool 26 is prepared, the burr 26 is pulled out to the outside only by a slight force, and the 262 is formed as a guide arc by the periphery of the block 265, and the bump 265 can be disengaged from the recessed hole 214. The spare blade 26 can be easily removed and the blade 24 in use can be replaced.

From the above description, it can be seen that the present invention has the following advantages:

1. The creation forms a shape with an obtuse angle between the grip portion and the knife portion of the knife body, which is easy to hold and exert force, and has a relatively strong covering structure, and the utility model can be optimally performed when the working knife works. Force effect.

2. The creation is made by the buckle structure between the sheath and the knife part, so that the knife part can be combined with a sheath which can be easily loaded and unloaded, and the blade can be wrapped on the inner side to prevent the blade from injuring the person.

3. The snap structure between the grip portion and the preparation knife allows the grip portion to be combined with a ready-to-handle cutter, and the new blade can be replaced at any time after the blade is passivated in use. .

This creation is in line with the new regulations in the patent law, and the author has not found the same or similar creations, and has applied for patents according to law.

20‧‧‧Working knives

21‧‧‧Tool body

211‧‧‧ grip

212‧‧‧Mask Department

213‧‧‧ accommodating slots

215‧‧‧first groove

216‧‧‧second groove

217‧‧‧ slots

22‧‧‧ Snap block

223‧‧‧ first clasp

224‧‧‧Second buckle

23‧‧‧ Rivets

24‧‧‧blade

242‧‧‧ third groove

243‧‧‧fourth groove

244‧‧‧ Sharp Department

25‧‧‧ sheath

251‧‧‧Slot

254‧‧‧Perforation

26‧‧‧ Preparation of knives

261‧‧‧匣

263‧‧‧ accommodating slots

264‧‧‧ notch

Claims (9)

The utility model relates to a gravity type working knife, which comprises a grip portion and a knife portion. The knife portion and the grip portion form an angle, and the upper end side of the knife portion is formed with a plurality of grooves on the knife portion. On the other side of the end surface, the shaft is provided with a yoke displacement engaging block, and the bottom surface of the fastening block is formed with a plurality of downwardly protruding buckles, and the front end surface of the knives forms a concave slot. A blade can be placed, the slot is connected with the groove of the upper end surface of the knife portion, and a plurality of grooves are formed on the upper end surface of the blade. When the blade is inserted into the slot to be positioned, the upper end surface of the blade is concave. The groove overlaps with the groove of the upper end surface of the knife portion. When the buckle block is pressed against the upper end surface of the knife portion, the buckles on the bottom surface of the buckle block can be inserted into the concave surface of the upper end surface of the blade. In the groove of the upper end surface of the groove and the knife portion, the blade is partially exposed on the outer side of the slot, and a sheath can be sleeved on the exposed blade, and the sleeve and the slot of the knife portion are The utility model has a buckle structure which can be combined with light force; the bottom end surface of the grip portion forms a deep receiving groove and can be placed into a preparation knife. Preparation blade receiving slot between the magazine and the grip portion of the binding system having locking structure may be a light force. The gravity type working knife according to claim 1, wherein one side end surface of the sheath forms a deep groove for inserting the front end of the blade, and the buckle between the sheath and the slot of the knife portion The structure has a guide groove formed on one of the inner wall surfaces of the slot of the blade portion, and the bottom edge of the guide groove is formed on the same inner wall surface to form a card slot deeper toward the wall surface, and is disposed on the sheath The side end surface of the slot is formed in the direction of the knives, and a partially protruding extending piece is formed. The end edge of the extending piece is opposite to the slot of the knives, and a convex block is formed. The card block is formed as an arc-guiding angle, and the block of the extension piece can be inserted into the card slot of the guide groove to be in a jam state. The gravity type working blade according to claim 1, wherein the preparation blade is formed with a length extending one of the lengths, and the crotch portion is formed with a receiving groove for arranging a plurality of spare blades, the preparation blade The buckle structure between the accommodating groove and the grip portion is formed on the other side of the shank portion, and a small bump which is formed into an arc angle is formed on the other side of the shank portion, and one of the inner wall surfaces of the accommodating groove of the grip portion is formed A recessed recessed hole is formed in the recessed hole when the preparation knife is inserted into the accommodating groove to be positioned. The gravity type working blade according to claim 1 or 2 or 3, wherein the grip portion and a knife portion are integrally formed by injection molding of plastic. The gravity type working blade according to claim 1 or 2 or 3, wherein the lower end surface between the blade portion and the grip portion is formed into a wave-like appearance. The gravity type working blade according to claim 1 or 2 or 3, wherein the blade system has a trapezoidal metal piece body, and the outer sides of the blade are formed as oblique sides which are inclined outward, and the bottom edge is ground to The sharp blade has a top edge that forms a number of spaced grooves. The gravity type working knife according to claim 2, wherein the slot of the sheath is provided with a through hole penetrating in a diagonal direction, and the through hole is in communication with the slot. The gravity type working blade according to claim 3, wherein the knife groove is formed in a trapezoidal shape in conformity with the shape of the blade, and a notch is formed at one corner thereof. The gravity type working blade according to claim 3, wherein the two sides of the small bump are formed as a hollow portion.