Separating type double-edge folding knife

Abstract

The utility model discloses a separating type double-edge folding knife which comprises a knife handle, a left blade and a right blade, a first hinge shaft and a second hinge shaft are arranged on the front portion of the knife handle, and the left blade and the right blade are rotatably installed on the knife handle through the first hinge shaft and the second hinge shaft respectively. A left blade hiding chamber for horizontally hiding the left blade and a right blade hiding chamber for horizontally hiding the right blade are formed on the two sides of the cutter handle respectively, a left quick-opening fin and a left blade stopping column are arranged on the side, close to the first hinge shaft, of the left blade, and a right quick-opening fin and a right blade stopping column are arranged on the side, close to the second hinge shaft, of the right blade. According to the folding knife, a double-knife mode with blades on two sides can be formed, a single-knife mode formed by unfolding one side and folding the other side can also be formed, the double blades are combined when the double blades are unfolded because only the blade parts need to be hidden and the non-blade parts are exposed, and finally the blades are wider than the knife handle, so that the width of the knife handle is reduced, and the grabbing feeling is improved; the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of folding knives, in particular to a separable double-edged folding knife. Background Art

[0002] At present, the double-edged knives of the mainstream double-edged folding knives on the market are all hidden double-edged. Because the blades need to be hidden in the handle, the handle needs to be made very wide. As a result, the handle is wider than the blade. However, the grasping feel of the wide handle structure is relatively poor. Therefore, some on the market will adopt a false edge (without sharpness) on one side in order to show that the blade is wider than the handle, and one side with a blade needs to be hidden in the knife with the false edge. In addition, the current double-edged folding knives are not reasonably designed in the rotating folding structure and the locking structure, and are often prone to jamming, or lack effective positioning when unfolding and locking. There are also some double-edged folding knives whose locking spring pieces are prone to wear, resulting in the entire folding knife being unable to fold. In addition, at present, some single knives or double knives often need to cope with cutting actual combat applications or knife-back knocking tests. For traditional folding knives, the locking spring pieces are stressed, and the locking spring pieces are prone to rebound, resulting in cutting failure. The above problems need to be solved. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a separable double-edged folding knife to solve the technical problems mentioned in the background art.

[0004] To solve the technical problems, the utility model is implemented by adopting the following technical solutions:

[0005] A separable double-edged folding knife includes a handle, a left blade, and a right blade. The front part of the handle is provided with a first hinge shaft and a second hinge shaft. The left blade and the right blade are respectively rotatably installed on the handle through the first hinge shaft and the second hinge shaft. Left knife storage chambers for the left blade to lie in and right knife storage chambers for the right blade to lie in are respectively formed on both sides of the handle. On one side of the left blade close to the first hinge shaft, a left quick-opening fin and a left stop post are provided. On one side of the right blade close to the second hinge shaft, a right quick-opening fin and a right stop post are provided. On one side of the handle corresponding to the end of the left blade, a first locking spring piece is provided. When the left blade is unfolded, the first locking spring piece just gets stuck at the end of the left blade to prevent it from returning. On the other side of the handle corresponding to the end of the right blade, a second locking spring piece is provided. When the right blade is unfolded, the second locking spring piece just gets stuck at the end of the right blade to prevent it from returning.

[0006] Specifically, when the left blade and the right blade are unfolded, they form a blade part facing outwards together and a non-blade part facing inwards and closely adjoining each other. When the left blade and the right blade are not unfolded, their blade parts are respectively received into the left knife storage chamber and the right knife storage chamber.

[0007] Specifically, the left blade includes a left blade portion and a left connecting portion, wherein a left quick-opening fin and a left knife-stopping column are located on the left blade portion and the first hinge shaft passes through the left blade portion; the right blade includes a right blade portion and a right connecting portion, wherein a right quick-opening fin and a right knife-stopping column are located on the right blade portion and the second hinge shaft passes through the right blade portion; one side of the first locking spring sheet is detachably provided with a first steel lock head, and one side of the second locking spring sheet is detachably provided with a second steel lock head; one side of the left blade portion is provided with a positioning block, and a positioning groove is provided at the position of the positioning column of the right blade portion; when the left blade and the right blade are both unfolded, the positioning groove just fits in the positioning block for positioning.

[0008] Specifically, a first positioning steel ball is provided on the first steel lock, a first locking groove is provided on the left connecting part corresponding to the position of the first positioning steel ball, a second positioning steel ball is provided on the second steel lock, and a second locking groove is provided on the right connecting part corresponding to the position of the second positioning steel ball.

[0009] Specifically, a left avoidance groove is provided at a position of the left connecting part close to the left quick-opening fin, and a right avoidance groove is provided at a position of the right connecting part close to the right quick-opening fin, wherein the left avoidance groove and the right quick-opening fin are aligned and avoided, and the right avoidance groove and the left quick-opening fin are aligned and avoided.

[0010] Specifically, the knife handle includes an upper knife handle, a lower knife handle, and a spacer. The rear ends of the upper knife handle and the lower knife handle are connected by a spacer to form a left knife storage chamber and a right knife storage chamber. The first locking spring plate is located at the lower knife handle, and the second locking spring plate is located at the upper knife handle. The front ends of the upper knife handle and the lower knife handle are both provided with a first hinge hole and a second hinge hole. The left blade and the right blade are respectively provided with a third hinge hole and a fourth hinge hole. The first hinge shaft passes through the first hinge hole and the third hinge hole respectively to complete the rotation connection of the left blade, and the second hinge shaft passes through the second hinge hole and the fourth hinge hole respectively to complete the rotation connection of the right blade. The spacer, the upper knife handle and the lower knife handle are coaxially provided with finger rings, and knife storage grooves are provided on both sides of the spacer.

[0011] Specifically, a first L-shaped groove is provided on one side of the lower knife handle, and a first elastic locking spring sheet is formed on one side of the first L-shaped groove. The inner side of the first locking spring sheet is provided with a first cutting groove, and the outer side is provided with a first slot, wherein the first slot is used to install a first steel lock. A second L-shaped groove is provided on one side of the upper knife handle, and a second elastic second locking spring sheet is formed on one side of the second L-shaped groove. The inner side of the second locking spring sheet is provided with a second cutting groove, and the outer side is provided with a second slot, wherein the second slot is used to install a second steel lock.

[0012] Specifically, both the first hinge shaft and the second hinge shaft include gaskets, bearings, main shaft screws, and main shaft nuts. Installation grooves for installing the bearings are provided on the first hinge hole and the second hinge hole. The main shaft screws and the main shaft nuts are tightened from the upper and lower ends of the first hinge hole and the second hinge hole respectively in opposite directions to complete the assembly of the first hinge shaft and the second hinge shaft.

[0013] Specifically, both the left knife stop post and the right knife stop post include knife stop nuts and knife stop screws. Knife stop holes are provided on both the left blade and the right blade. The knife stop nuts and the knife stop screws pass through the knife stop holes from the upper and lower sides respectively to complete the installation of the left knife stop post and the right knife stop post. Expansion positioning grooves are provided on both sides of the front part of the knife handle corresponding to the positions of the left knife stop post and the right knife stop post. Folding positioning grooves are provided on both sides of the rear part of the knife handle corresponding to the positions of the left knife stop post and the right knife stop post. The left knife stop post and the right knife stop post are both stuck at the expansion positioning grooves when the left blade and the right blade are expanded. The right knife stop post and the right knife stop post are both stuck at the folding positioning grooves when the left blade and the right blade are folded.

[0014] Specifically, it further includes a back clip member. A back clip member is provided on the outer side of the lower knife handle. A clamping rod is provided on the back clip member. A clamping head is provided at the end of the clamping rod. An upper decorative piece is provided on one side of the upper knife handle. A lower decorative piece is provided on one side of the lower knife handle.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In this utility model, the two sides of the knife handle are set as a left knife storage chamber and a right knife storage chamber that can hide the blade. The originally axially symmetric blade is divided into a left blade and a right blade. The left blade is hinged to the knife handle through a first hinge shaft, and the right blade is hinged to the knife handle through a second hinge shaft. When the two blades are unfolded, they face away from each other and are clamped and matched through a positioning groove and a positioning block to form a double - knife mode with blades on both sides. It can also be unfolded on one side and folded on the other side to form a single - knife mode. The grasping part in the middle of the knife handle of this folding knife only needs to hide the blade part, and its non - blade part is exposed. When unfolded, the two blades are combined, and finally the blade is wider than the handle, which helps to improve the grasping feeling by reducing the width of the knife handle. In addition, for the folding, rotating and locking structure, this patent improves the traditional locking structure by forming locking elastic pieces (including a first locking elastic piece and a second locking elastic piece) in the form of grooves on the knife handle. A replaceable steel lock head is set on the locking elastic piece. The steel lock head is used to directly contact the end of the blade, which is easy to wear and can be removed and replaced after use, increasing durability. In addition, this folding knife is provided with a relief groove at the position of the quick - opening fin, and the upper and lower relief methods enable the double - side blades to avoid each other when opening. Finally, for the daily double - knife mode, the supporting parts in this patent's double - knife mode are all stop - knife post structures, so it can cope with strict double - knife cutting. In addition, at the first hinge hole and the second hinge hole positions of the upper knife handle and the lower knife handle of the knife handle, D - shaped screw holes are set to prevent slipping when assembling the screws. In addition, in this patent, the outer blade parts of the left blade and the right blade can be freely combined to facilitate adaptation to different application scenarios. For example, the blade part of the left blade adopts a straight edge for daily cutting, and the right blade is a serrated edge for cutting ropes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : The folded state of the blade of the folding knife of the utility model patent Figure 1 ;

[0018] Figure 2 : The unfolded state of the blade of the folding knife of the utility model patent Figure 1 ;

[0019] Figure 3 : The folded state of the blade of the folding knife of the utility model patent Figure 2 ;

[0020] Figure 4 : The folded state of the blade of the folding knife of the utility model patent Figure 3 ;

[0021] Figure 5 : The unfolded state of the blade of the folding knife of the utility model patent Figure 2 ;

[0022] Figure 6 : The state diagram of the left blade unfolded and the right blade folded in the folding knife of the utility model patent;

[0023] Figure 7 : is Figure 1 One of the exploded views of the middle folding knife;

[0024] Figure 8 : is Figure 1 Another exploded view of the middle folding knife;

[0025] Figure 9 : is Figure 1 The third exploded view of the middle folding knife;

[0026] Figure 10 : From top to bottom are respectively Figure 2 , Figure 6 , Figure 1 The sectional view of the middle folding knife dissected along the horizontal center line;

[0027] Figure 11 : Schematic diagram of the structures of the left blade and the right blade Figure 1 ;

[0028] Figure 12 : Schematic diagram of the structures of the left blade and the right blade Figure 2 ;

[0029] In the figure: handle 100, left blade 1, right blade 2, first hinge shaft 3, second hinge shaft 4, left knife storage chamber 101, right knife storage chamber 102, left quick-opening fin 121, left knife stop post 122, right quick-opening fin 221, right knife stop post 222, first locking spring piece 51, second locking spring piece 61, left blade part 11, left connecting part 12, right blade part 21, right connecting part 22, first steel lock head 511, second steel lock head 611, positioning block 111, positioning groove 211, first positioning steel ball 511a, first clamping groove 123, second positioning steel ball 611a, second clamping groove 223, left avoidance groove 124, right avoidance groove 224, upper handle 6, lower handle 5, spacer 7, first hinge hole 501, second hinge hole 202, third hinge hole 125, fourth hinge hole 225, finger ring 503, knife retraction groove 71, first L-shaped groove 52, first cutting groove 521, first slot 522, second L-shaped groove 62, second cutting groove 621, second slot 622, gasket 31, bearing 32, spindle screw 33, spindle nut 34, knife stop nut 122a, knife stop screw 122b, knife stop hole 504, unfolding positioning groove 103, folding positioning groove 104, back clip part 8, clip rod 81, clip head 811, upper decorative piece 9, lower decorative piece 10, D-port screw hole 35. Specific embodiments

[0030] Next, in combination with the accompanying drawings and specific embodiments, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined with each other to form new embodiments.

[0031] refer to Figures 1 to 12 :

[0032] The utility model discloses a split double-edged folding knife, comprising a handle 100, a left blade 1, and a right blade 2. The front part of the handle 100 is provided with a first hinge shaft 3 and a second hinge shaft 4. The left blade 1 and the right blade 2 are rotatably mounted on the handle 100 through the first hinge shaft 3 and the second hinge shaft 4, respectively. A left knife storage chamber 101 for hiding the left blade 1 and a right knife storage chamber 102 for hiding the right blade 2 are respectively formed on both sides of the handle 100. A left quick-opening fin 121 and a left knife-stopping column 122 are provided on a side of the left blade 1 close to the first hinge shaft 3. A right knife-stopping column 122 is provided on a side of the right blade 2 close to the second hinge shaft 4. The quick-opening fin 221 and the right knife-stopping column 222, the left quick-opening fin 121 and the right quick-opening fin 221 are both protrudingly arranged at the front part of the knife handle 100, so as to facilitate the fingers to pry and thus open the left blade 1 and the right blade 2. A first locking spring piece 51 is provided on one side of the knife handle 100 corresponding to the position of the end of the left blade 1. When the left blade 1 is unfolded, the first locking spring piece 51 is just stuck at the end of the left blade 1 to prevent it from returning to its position. A second locking spring piece 61 is provided on the other side of the knife handle 100 corresponding to the position of the end of the right blade 2. When the right blade 2 is unfolded, the second locking spring piece 61 is just stuck at the end of the right blade 2 to prevent it from returning to its position.

[0033] Specifically, here, the left blade 1 and the right blade 2 form a cutting edge portion facing outward and a non-cutting edge portion facing inward and close to each other when unfolded, that is, a left-right symmetrical sword shape is formed. The cutting edges of the left blade 1 and the right blade 2 are respectively retracted into the left knife storage chamber 101 and the right knife storage chamber 102 when not unfolded. At this time, only the cutting edge portion is hidden in the handle 100, and the non-cutting edge portion is left outside. In this way, the width of the handle 100 can be reduced. Reducing the width of the handle 100 is conducive to increasing the gripping feel and making it more beautiful.

[0034] Specifically, the left blade 1 includes a left blade portion 11 and a left connecting portion 12, wherein a left quick-opening fin 121 and a left knife-stopping column 122 are located on the left blade portion 11 and the first hinge shaft 3 passes through the left blade portion 11, the right blade 2 includes a right blade portion 21 and a right connecting portion 22, wherein a right quick-opening fin 221 and a right knife-stopping column 222 are located on the right blade portion 21, and the second hinge shaft 4 passes through the right blade portion 21, one side of the first locking spring piece 51 is detachably provided with a first steel lock head 511, one side of the second locking spring piece 61 is detachably provided with a second steel lock head 611, one side of the left blade portion 11 is provided with a positioning block 111, and the right blade portion 21 is provided with a positioning groove 211 at the position corresponding to the positioning column, when the left blade 1 and the right blade 2 are both unfolded, the positioning groove 211 is just in a positioning and snap-fitting engagement with the positioning block 111.

[0035] Specifically, in order to form a sense of gear position when opening, so that the user knows that it has been fully opened, here, the first steel lock head 511 is provided with a first positioning steel ball 511a, the left connecting part 12 is provided with a first positioning groove 123 at a position corresponding to the first positioning steel ball 511a, the second steel lock head 611 is provided with a second positioning steel ball 611a, and the right connecting part 22 is provided with a second positioning groove 223 at a position corresponding to the second positioning steel ball 611a. Taking the opening of the left blade 1 as an example, when the left quick-opening fin 121 is pressed, the left blade 1 rotates around the first hinge axis 3 and then opens to the left. When it is close to the fully extended angle, the first positioning steel ball 511a is provided. The steel ball 511a just reaches the position of the first locking groove 123 and is embedded in the first locking groove 123 to form a locking effect. The user will hear a click sound, and the left blade 1 is unfolded into place. Of course, as a preferred embodiment, when the left blade 1 is folded, another set of first positioning steel balls 511a and the first locking groove 123 are used to locate its folded gear position, so that there are two sets of gear simulation mechanisms. Here, more than 50% of the volume of the lower body of the first positioning steel ball 511a and the second positioning steel ball 611a is buried in the first steel lock head 511 or the second steel lock head 611, and only a small part of the upper body is exposed for locking.

[0036] Specifically, because the left quick-opening fin 121 and the right quick-opening fin 221 both need to protrude from the outside of the handle 100 and have an arc-shaped shape, in some cases, when the two blades are unfolded, the left quick-opening fin 121 and the right quick-opening fin 221 may squeeze each other or collide with each other, thereby affecting the opening experience. Here, the left connecting portion 12 is provided with a left avoidance groove near the left quick-opening fin 121, and the right connecting portion 22 is provided with a right avoidance groove 224 near the right quick-opening fin 221, wherein the left avoidance groove 124 and the right quick-opening fin 221 are aligned and avoided, and the right avoidance groove 224 and the left quick-opening fin 121 are aligned and avoided, that is, the left quick-opening fin 121 and the right quick-opening fin 221 are staggered up and down.

[0037] Specifically, the handle 100 includes an upper handle 6, a lower handle 5, and a spacer 7. The rear ends of the upper handle 6 and the lower handle 5 are connected by the spacer 7. The left parts of the upper handle 6, the lower handle 5, and the spacer 7 jointly enclose a left knife storage chamber 101. Similarly, the right parts of the above components form a right knife storage chamber 102. The first locking spring piece 51 is located at the lower handle 5, and the second locking spring piece is located at the upper handle 6. The front ends of the upper handle 6 and the lower handle 5 are respectively provided with a first hinge hole 501 and a second hinge hole 202. The left blade 1 and the right blade 2 are respectively provided with a third hinge hole 125 and a fourth hinge hole 225. The first hinge shaft 3 respectively passes through the first hinge hole 501 and the third hinge hole 125 to complete the rotational connection of the left blade 1. The second hinge shaft 4 respectively passes through the second hinge hole 202 and the fourth hinge hole 225 to complete the rotational connection of the right blade 2. The spacer 7, the upper handle 6, and the lower handle 5 are coaxially provided with a finger ring 503 for hanging. Both sides of the spacer 7 are provided with knife receiving grooves 71 for receiving the sharpest parts of the blade parts of the left blade 1 or the right blade 2.

[0038] Specifically, one side of the lower handle 5 is provided with a first L-shaped groove 52. One side of the first L-shaped groove 52 forms an elastic first locking spring piece 51. The inner side of the first locking spring piece 51 is provided with a first cutting groove 521, and the outer side is provided with a first opening groove 522. The first opening groove 522 is used for installing a first steel lock head 511. Here, due to the existence of the first L-shaped groove 52, the first locking spring piece 51 can be bent upward to form a tendency to squeeze inward or upward. When the left blade 1 is being folded from the unfolded state, the first locking spring piece 51 needs to be bent outward. At this time, the first steel lock head 511 on the first locking spring piece 51 disengages from the end part of the left blade 1, so that the left blade 1 can be bent and rotated. When the left blade 1 is further rotated to enter the left knife storage chamber 101, the thickness of the left blade 1 squeezes the first locking spring piece 51. Until the left knife stop column 122 reaches the front limit position of the handle 100, when the first positioning steel ball 511a and the first clamping groove 123 are in place and cooperate, the folding action is completed. When the left blade 1 needs to be unfolded, just directly press the left quick-opening fin 121, so that the left blade 1 rotates clockwise around the first hinge shaft 3. When it is opened to a certain angle, the blade body of the left blade 1 disengages from the left knife storage chamber 101. At this time, the first locking spring piece 51 with an upward elastic tendency returns to its position, and drives the first steel lock head 511 to squeeze inward to the bottom end face of the left blade 1 to hold the left blade 1 and prevent it from returning to its original position, thus completing the unfolding action of the left blade 1. One side of the upper handle 6 is provided with a second L-shaped groove 62. One side of the second L-shaped groove 62 forms an elastic second locking spring piece 61. The inner side of the second locking spring piece 61 is provided with a second cutting groove 621, and the outer side is provided with a second opening groove 622. The second opening groove 622 is used for installing a second steel lock head 611. Here, the unfolding of the right blade 2 can refer to the unfolding action of the left blade 1.

[0039] Specifically, both the first hinge shaft 3 and the second hinge shaft 4 include a gasket 31, a bearing 32, a spindle screw 33, and a spindle nut 34. An installation groove for installing the bearing 32 is provided on the first hinge hole 501 and the second hinge hole 202. The spindle screw 33 and the spindle nut 34 are respectively tightened from the upper and lower ends of the first hinge hole 501 and the second hinge hole 202 to complete the assembly of the first hinge shaft 3 and the second hinge shaft 4.

[0040] Specifically, both the left stop knife post 122 and the right stop knife post 222 include a stop knife nut 122a and a stop knife screw 122b. Stop knife holes 504 are provided on both the left blade 1 and the right blade 2. The stop knife nut 122a and the stop knife screw 122b respectively pass through the stop knife holes 504 from the upper and lower sides to complete the installation of the left stop knife post 122 and the right stop knife post 222. Expansion positioning grooves 103 are provided on both sides of the front part of the knife handle 100 corresponding to the positions of the left stop knife post 122 and the right stop knife post 222. Folding positioning grooves 104 are provided on both sides of the rear part of the knife handle 100 corresponding to the positions of the left stop knife post 122 and the right stop knife post 222. The left stop knife post 122 and the right stop knife post 222 are both stuck at the expansion positioning grooves 103 when the left blade 1 and the right blade 2 are expanded. The right stop knife post 222 and the right stop knife post 222 are both stuck at the folding positioning grooves 104 when the left blade 1 and the right blade 2 are folded.

[0041] Specifically, for the convenience of carrying, a back clip member 8 is further included here. The back clip member 8 is provided on the outer side of the lower knife handle 5. A clip rod 81 is provided on the back clip member 8. A clip head 811 is provided at the end of the clip rod 81. An upper decorative piece 9 is provided on one side of the upper knife handle 6. A lower decorative piece 10 is provided on one side of the lower knife handle 5. Above, the clip rod 81 is a resilient metal piece.

[0042] Preferably, D-port screw holes 35 are provided at the positions of the first hinge hole and the second hinge hole of the upper knife handle and the lower knife handle of the knife handle, and the positions of the D-port screw holes on the upper knife handle and the lower knife handle are mutually offset or mirror-image each other. On the one hand, it can prevent slipping when assembling the screws. On the other hand, it is also convenient for the upper knife handle and the lower knife handle to be produced by a set of molds.

[0043] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A detachable double-edged folding knife, comprising a handle, a left blade and a right blade, wherein a first hinge axis and a second hinge axis are provided at the front portion of the handle, and the left blade and the right blade are rotatably mounted on the handle through the first hinge axis and the second hinge axis respectively, and a left knife storage chamber for hiding the left blade and a right knife storage chamber for hiding the right blade are formed on both sides of the handle respectively, a left quick-opening fin and a left knife-stopping column are provided on a side of the left blade close to the first hinge axis, and a right quick-opening fin and a right knife-stopping column are provided on a side of the right blade close to the second hinge axis, a first locking spring sheet is provided on one side of the handle corresponding to the position of the end of the left blade, and when the left blade is unfolded, the first locking spring sheet is just stuck at the end of the left blade to prevent it from returning to its original position, and a second locking spring sheet is provided on the other side of the handle corresponding to the position of the end of the right blade, and when the right blade is unfolded, the second locking spring sheet is just stuck at the end of the right blade to prevent it from returning to its original position.

2. A split double-edged folding knife as claimed in claim 1, characterized in that: The left blade and the right blade form a cutting edge portion facing outwards and a non-cutting edge portion facing inwards and close to each other when the left blade and the right blade are deployed. The cutting edges of the left blade and the right blade are respectively stored in the left blade storage chamber and the right blade storage chamber when the blade is not deployed.

3. A split double-edged folding knife as claimed in claim 2, characterized in that: The left blade includes a left blade portion and a left connecting portion, wherein a left quick-opening fin and a left knife-stopping column are located on the left blade portion and a first hinge shaft passes through the left blade portion; the right blade includes a right blade portion and a right connecting portion, wherein a right quick-opening fin and a right knife-stopping column are located on the right blade portion and a second hinge shaft passes through the right blade portion; a first steel lock head is detachably provided on one side of the first locking spring sheet, and a second steel lock head is detachably provided on one side of the second locking spring sheet; a positioning block is provided on one side of the left blade portion, and a positioning groove is provided on the right blade portion corresponding to the position of the positioning column; when the left blade and the right blade are both unfolded, the positioning groove is just in engagement with the positioning block.

4. A split double-edged folding knife as claimed in claim 3, characterized in that: The first steel lock is provided with a first positioning steel ball, the left connecting part is provided with a first clamping groove at a position corresponding to the first positioning steel ball, the second steel lock is provided with a second positioning steel ball, and the right connecting part is provided with a second clamping groove at a position corresponding to the second positioning steel ball.

5. A split double-edged folding knife as claimed in claim 3, characterized in that: A left avoidance groove is provided at a position of the left connecting part close to the left quick-opening fin, and a right avoidance groove is provided at a position of the right connecting part close to the right quick-opening fin, wherein the left avoidance groove and the right quick-opening fin are aligned and avoided, and the right avoidance groove and the left quick-opening fin are aligned and avoided.

6. A split double-edged folding knife as claimed in claim 1, characterized in that: The knife handle comprises an upper knife handle, a lower knife handle and a spacer, the rear ends of the upper knife handle and the lower knife handle are connected by a spacer to form a left knife storage chamber and a right knife storage chamber, the first locking spring plate is located at the lower knife handle, and the second locking spring plate is located at the upper knife handle, the front ends of the upper knife handle and the lower knife handle are both provided with a first hinge hole and a second hinge hole, the left blade and the right blade are respectively provided with a third hinge hole and a fourth hinge hole, the first hinge shaft passes through the first hinge hole and the third hinge hole respectively to complete the rotation connection of the left blade, the second hinge shaft passes through the second hinge hole and the fourth hinge hole respectively to complete the rotation connection of the right blade, the spacer, the upper knife handle and the lower knife handle are coaxially provided with a finger ring, and both sides of the spacer are provided with a knife receiving groove.

7. A split double-edged folding knife as claimed in claim 6, characterized in that: A first L-shaped groove is provided on one side of the lower knife handle, and a first elastic locking spring sheet is formed on one side of the first L-shaped groove. The inner side of the first locking spring sheet is provided with a first cutting groove, and the outer side is provided with a first slot, wherein the first slot is used to install a first steel lock. A second L-shaped groove is provided on one side of the upper knife handle, and a second elastic second locking spring sheet is formed on one side of the second L-shaped groove. The inner side of the second locking spring sheet is provided with a second cutting groove, and the outer side is provided with a second slot, wherein the second slot is used to install a second steel lock.

8. A split double-edged folding knife as claimed in claim 1, characterized in that: The first hinge shaft and the second hinge shaft both include a gasket, a bearing, a spindle screw and a spindle nut, wherein the first hinge hole and the second hinge hole are provided with mounting grooves for installing the bearings, and the spindle screw and the spindle nut are respectively tightened from the upper and lower ends of the first hinge hole and the second hinge hole to complete the assembly of the first hinge shaft and the second hinge shaft.

9. A split double-edged folding knife as claimed in claim 1, characterized in that: The left knife stop column and the right knife stop column both include a knife stop nut and a knife stop screw, wherein the left blade and the right blade are both provided with a knife stop hole, and the knife stop nut and the knife stop screw pass through the knife stop holes from the upper and lower sides respectively to complete the installation of the left knife stop column and the right knife stop column, and the front two sides of the knife handle corresponding to the positions of the left knife stop column and the right knife stop column are both provided with deployment slots, and the rear two sides of the knife handle corresponding to the positions of the left knife stop column and the right knife stop column are both provided with folding slots, and the left knife stop column and the right knife stop column are both stuck in the deployment slot when the left blade and the right blade are deployed, and the right knife stop column and the right knife stop column are both stuck in the folding slot when the left blade and the right blade are folded.

10. A split double-edged folding knife as claimed in any one of claims 6 to 7, characterized in that: It also includes a back clamp, which is arranged on the outer side of the lower handle, a clamp rod is arranged on the back clamp, a clamp head is arranged at the end of the clamp rod, an upper decorative sheet is arranged on one side of the upper handle, and a lower decorative sheet is arranged on one side of the lower handle.

Images