Double-end cutter

Abstract

The utility model discloses a double-headed cutter which comprises a shell, a middle plate, a first cutter and a second cutter, a cavity is formed in the shell, the middle plate is arranged in the cavity of the shell and divides the cavity into a first cavity body and a second cavity body, the first cutter is arranged in the first cavity body, the second cutter is arranged in the second cavity body, and the second cutter is arranged in the second cavity body. The first cutter and the second cutter can slide along the first cavity and the second cavity correspondingly so as to extend out of the shell or be contained in the shell. The double-head cutter is provided with two kinds of blades, the application range of the double-head cutter can be effectively widened, and various cutting conditions can be met.

Description

Technical Field

[0001] This utility model relates to the technical field of cutting tools, and specifically to a double-ended cutting tool. Background Technology

[0002] A utility knife is a common cutting tool, usually consisting of only one retractable trapezoidal blade. It is typically used for precise cutting tasks in art, office, and industrial settings, such as cutting materials like paper, plastic, thin wood, wallpaper, and film.

[0003] However, traditional utility knives only come with one type of blade, which greatly limits their applicability. When dealing with different materials or needing to make different types of cuts, users often need to change the blade or use different tools. For example, trapezoidal blades cannot meet the needs of cutting cables and wires, making grooves, or handling complex shapes. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings in the existing technology by providing a double-ended cutting tool with two types of blades, which can effectively improve its applicability and meet various cutting situations.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A double-ended cutting tool includes a housing, an intermediate plate, a first cutting tool, and a second cutting tool. The housing has an internal cavity. The intermediate plate is disposed within the cavity of the housing and divides the cavity into a first cavity and a second cavity. The first cutting tool is disposed within the first cavity, and the second cutting tool is disposed within the second cavity. The first cutting tool and the second cutting tool can slide along the first cavity and the second cavity, respectively, thereby extending to the outside of the housing or being stored inside the housing.

[0007] Preferably, the housing has a first groove and a second groove on both sides, the first groove communicating with the first cavity and the second groove communicating with the second cavity. The first cutting tool includes a first blade, a first sheath, and a first slider. The first blade is installed in the first sheath, with its head extending out of the first sheath. The first sheath slides in the first cavity. The first slider is connected to the first sheath and extends out of the housing through the first groove. The first slider slides along the first groove, thereby causing the first sheath to slide in the first cavity. The second cutting tool includes a second blade, a second sheath, and a second slider. The second blade is installed in the second sheath, with its head extending out of the second sheath. The second sheath slides in the second cavity. The second slider is connected to the second sheath and extends out of the housing through the second groove. The second slider slides along the second groove, thereby causing the second sheath to slide in the second cavity.

[0008] Preferably, the two sides of the middle plate are a first side and a second side, and both the first side and the second side are provided with guide rails. The first cutter slides along the guide rail of the first side and the second cutter slides along the guide rail of the second side.

[0009] Preferably, the intermediate plate is provided with a first elastic block and a second elastic block. The side of the first elastic block facing the first cavity has a first protrusion and a first inclined surface. The first inclined surface is opposite to the first cutter and is inclined from low to high along the direction in which the first cutter slides out of the first cavity. The other side of the first elastic block is lower than or flush with the second side of the intermediate plate. The side of the second elastic block facing the second cavity has a second protrusion and a second inclined surface. The second inclined surface is opposite to the second cutter and is inclined from low to high along the direction in which the second cutter slides out of the second cavity. The other side of the second elastic block is lower than or flush with the first side of the intermediate plate. When the first cutter slides out of the first cavity, it compresses and deforms the first elastic block. The side of the first elastic block near the second side of the intermediate plate protrudes outward, thereby limiting the second cutter. When the second cutter slides out of the second cavity, it compresses and deforms the second elastic block. The side of the second elastic block near the first side of the intermediate plate protrudes outward, thereby limiting the first cutter.

[0010] Preferably, both the first blade and the second blade have a symmetrical structure.

[0011] Preferably, the bottom end of the first blade is beveled, and an opening is provided on the back of the blade. A third elastic block is provided on one side of the first sheath, and a first locking part is provided on the third elastic block. When the first blade is inserted into the first sheath, the beveled bottom of the first blade presses against the third elastic block, causing the third elastic block to deform toward the side away from the first sheath. When the opening aligns with the first locking part, the third elastic block rebounds, so that the first locking part is locked into the opening. A fourth elastic block is provided on one side of the second sheath, and a second locking part is provided on the fourth elastic block. When the second blade is inserted into the second sheath, the beveled bottom of the second blade presses against the fourth elastic block, causing the fourth elastic block to deform toward the side away from the second sheath. When the opening aligns with the second locking part, the fourth elastic block rebounds, so that the second locking part is locked into the opening.

[0012] Preferably, the top two sides of the housing are respectively provided with a first through hole and a second through hole. The first through hole communicates with the first cavity and the second through hole communicates with the second cavity. A first pressing member is provided in the first through hole and a second pressing member is provided in the second through hole. When the first cutter extends out of the first cavity, the third elastic block is aligned with the first through hole. Pressing the first pressing member can cause the first locking part to disengage from the opening of the first blade. When the second cutter extends out of the second cavity, the fourth elastic block is aligned with the second through hole. Pressing the second pressing member can cause the second locking part to disengage from the opening of the second blade.

[0013] Preferably, the first sheath is further provided with a first limiting part. When the first locking part is engaged with the opening of the first blade, the bottom inclined surface of the first blade abuts against the first limiting part. The first sheath is provided with a second limiting part. When the second locking part is engaged with the opening of the second blade, the bottom inclined surface of the second blade abuts against the second limiting part.

[0014] Preferably, the first slider is connected to the first sheath via a fifth elastic block, and the second slider is connected to the second sheath via a sixth elastic element.

[0015] Preferably, the bottom of the housing is provided with a removable storage slot for storing the first blade and the second blade.

[0016] This utility model has the following beneficial effects:

[0017] 1. The cavity of the double-ended cutter housing is divided into a first cavity and a second cavity by an intermediate plate. A first cutter and a second cutter are respectively provided in the first cavity and the second cavity. The first cutter and the second cutter can slide along the first cavity and the second cavity respectively, so as to extend to the outside of the housing or be stored in the inside of the housing. The two different cutters adopt trapezoidal blades and horn blades respectively, thereby effectively improving the applicability of the cutter.

[0018] 2. The intermediate plate is provided with a first elastic block and a second elastic block. The side of the first elastic block facing the first cavity has a first protrusion, and the side of the second elastic block facing the second cavity has a second protrusion. When the first cutter slides out of the first cavity, the first elastic block deforms to limit the second cutter. When the second cutter slides out of the second cavity, the second elastic block deforms to limit the first cutter. This structure effectively ensures that the two cutters cannot extend out of the housing at the same time, ensuring the safety of cutter use.

[0019] 3. The opening of the first blade or the second blade is matched with the structure of the third elastic block or the fourth elastic block so that the first blade or the second blade can be smoothly inserted into the first blade sheath or the second blade sheath. When the opening of the first blade or the second blade is aligned with the first locking part or the second locking part, the first locking part or the second locking part springs back into the opening of the first blade or the second blade, thereby ensuring a stable connection between the first blade or the second blade and the first blade sheath or the second blade sheath. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first cutting tool extending out of the housing in Embodiment 1;

[0021] Figure 2 This is a schematic diagram of the second cutter extending out of the housing in Embodiment 1;

[0022] Figure 3This is a front view of the housing in Embodiment 1;

[0023] Figure 4 yes Figure 3 A cross-sectional view along plane AA;

[0024] Figure 5 This is a schematic diagram of the structure of the first surface of the top of the shell in Embodiment 1;

[0025] Figure 6 This is a schematic diagram of the structure of the second side of the top of the shell in Embodiment 1;

[0026] Figure 7 This is a top view of the double-headed cutter in Example 1;

[0027] Figure 8 This is a schematic diagram of the storage tank for the double-headed cutter in Embodiment 1;

[0028] Figure 9 This is a schematic diagram of the structure of the second cutting tool in the double-headed cutting tool of Example 1;

[0029] Figure 10 This is a schematic diagram of the structure of the first pressing member and the second pressing member in Embodiment 1;

[0030] Figure 11 This is a schematic diagram of the second tool in Embodiment 1 with the second slider removed;

[0031] Figure 12 This is a schematic diagram of the structure of the back of the second sheath and the second blade in Embodiment 1;

[0032] Figure 13 This is a schematic diagram of the structure of the first cutting tool in Example 1;

[0033] Figure 14 This is a schematic diagram of the structure of the first blade in Example 1;

[0034] Figure 15 This is a schematic diagram of the structure of the second blade in Example 1;

[0035] Figure 16 This is a schematic diagram of the structure of the first side of the intermediate plate in Embodiment 1;

[0036] Figure 17 This is a schematic diagram of the second side of the intermediate plate in Embodiment 1;

[0037] Figure 18 This is a schematic diagram of the structure of the back of the second scabbard in Example 1.

[0038] In the diagram: 100 - Housing, 110 - First cavity, 120 - Second cavity, 130 - First slide groove, 140 - Second slide groove, 150 - First through hole, 160 - Second through hole, 170 - First mounting groove, 180 - Second mounting groove, 200 - Middle plate, 210 - First side surface, 211 - First slot, 220 - Second side surface, 221 - Second slot, 230 - Guide rail, 240 - First elastic block, 250 - Second elastic block, 260 - First protrusion, 270 - First inclined surface, 280 - Second protrusion, 290 - Second inclined surface, 300 - First blade Tool, 310-First blade, 320-First sheath, 330-First slider, 400-Second tool, 410-Second blade, 420-Second sheath, 430-Second slider, 500-Opening, 510-Third elastic block, 511-First locking part, 520-Fourth elastic block, 521-Second locking part, 600-First pressing member, 601-First head, 610-Second pressing member, 611-Second head, 700-First limiting part, 710-Second limiting part, 800-Fifth elastic block, 810-Sixth elastic block, 900-Storage slot. Detailed Implementation

[0039] The technical solutions of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "above" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection," "setting," "installation," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Example 1

[0044] like Figures 1-18 As shown, this embodiment discloses a double-ended cutting tool, including a housing 100, an intermediate plate 200, a first cutting tool 300, and a second cutting tool 400. The housing 100 has an internal cavity, and the intermediate plate 200 is disposed within the cavity of the housing 100 and is arranged along the length of the cavity, thereby dividing the cavity into a first cavity 110 and a second cavity 120. The first cutting tool 300 is disposed within the first cavity 110, and the second cutting tool 400 is disposed within the second cavity 120. The first cutting tool 300 and the second cutting tool 400 can slide along the first cavity 110 and the second cavity 120, respectively, thereby extending outside the housing 100 or being stored inside the housing 100.

[0045] like Figure 1 , 2 As shown, specifically, a first sliding groove 130 and a second sliding groove 140 are respectively provided on the two side walls of the housing 100 (both the first sliding groove 130 and the second sliding groove 140 are arranged along the length direction of the housing 100). The first sliding groove 130 communicates with the first cavity 110, and the second sliding groove 140 communicates with the second cavity 120. The first cutting tool 300 includes a first blade 310, a first sheath 320, and a first slider 330. The first blade 310 is installed in the first sheath 320, with its head end extending out of the first sheath 320. The first sheath 320 is slidably disposed in the first cavity 110. The first slider 330 is connected to the first sheath 320 and extends to the outside of the housing 100 through the first sliding groove 130. The operator pushes the first slider 330 to slide along the first sliding groove 130, thereby causing the first sheath 320 to slide within the first cavity 110.

[0046] The second cutting tool 400 includes a second blade 410, a second sheath 420, and a second slider 430. The second blade 410 is installed inside the second sheath 420, with its head end extending out of the second sheath 420. The second sheath 420 is slidably disposed inside the second cavity 120. The second slider 430 is connected to the second sheath 420 and extends to the outside of the housing 100 through the second sliding groove 140. The operator pushes the second slider 430 to slide along the second sliding groove 140, thereby causing the second sheath 420 to slide within the second cavity 120.

[0047] like Figure 16 , 17 As shown, in this embodiment, the two sides of the intermediate plate 200 are a first side 210 and a second side 220, respectively. Both the first side 210 and the second side 220 are provided with guide rails 230. The first cutter 300 slides along the guide rail 230 of the first side 210, and the second cutter 400 slides along the guide rail 230 of the second side 220.

[0048] like Figure 16, 17 As shown, a rectangular opening is formed in the intermediate plate 200, and a first elastic block 240 and a second elastic block 250 are disposed within the opening. One end of the first elastic block 240 and the second elastic block 250 are fixedly installed on a side wall of the opening near the top of the intermediate plate 200, and the other end of the first elastic block 240 and the second elastic block 250 are free ends. The first elastic block 240 and the second elastic block 250 are arranged parallel to each other and spaced apart within the opening.

[0049] like Figure 16 As shown, the first elastic block 240 has a first protrusion 260 on the side facing the first cavity 110. The first protrusion 260 has a first inclined surface 270, which is opposite to the first cutter 300 (located on the side of the first protrusion 260 away from the top of the intermediate plate 200) and is inclined from low to high along the direction in which the first cutter 300 slides out of the first cavity 110. The other side of the first elastic block 240 is lower than the second side surface 220 of the intermediate plate 200 or flush with the second side surface 220 of the intermediate plate 200.

[0050] like Figure 17 As shown, the second elastic block 250 has a second protrusion 280 on the side facing the second cavity 120. The second protrusion 280 has a second inclined surface 290, which is opposite to the second cutter 400 (located on the side of the second protrusion 280 away from the top of the intermediate plate 200) and is inclined from low to high along the direction in which the second cutter 400 slides out of the second cavity 120. The other side of the second elastic block 250 is lower than the first side surface 210 of the intermediate plate 200 or flush with the first side surface 210 of the intermediate plate 200.

[0051] Therefore, when the first cutter 300 slides out of the first cavity 110, it slides along the first inclined surface 270, contacts the first protrusion 260, and deforms the first elastic block 240. The side of the first elastic block 240 closest to the second side surface 220 of the intermediate plate 200 protrudes outward, causing the free end of the first elastic block 240 to tilt upward, higher than the second side surface 220 of the intermediate plate 200, thus achieving the effect of limiting the second cutter 400. In other words, when the first cutter 300 extends out of the first cavity 110, it will limit the second cutter 400, at which time the second cutter 400 cannot extend out of the second cavity 120.

[0052] Similarly, when the second cutter 400 slides out of the second cavity 120, it slides along the second inclined surface 290, contacts the second protrusion 280, and compresses the second elastic block 250 to deform. The side of the second elastic block 250 closest to the first side 210 of the intermediate plate 200 protrudes outward, causing the free end of the second elastic block 250 to tilt upward, higher than the first side 210 of the intermediate plate 200, thereby achieving the effect of limiting the first cutter 300. In other words, when the second cutter 400 extends out of the second cavity 120, it will limit the first cutter 300, at which time the first cutter 300 cannot extend out of the first cavity 110.

[0053] like Figure 13 , 14 As shown, the bottom end of the first blade 310 is beveled, and an opening 500 is provided on the back of the blade. The first sheath 320 is a semi-closed structure with an opening at the top, and it includes two sides. A third elastic block 510 is provided on one of the sides, and a first locking part 511 is provided on the third elastic block 510. When the first blade 310 is inserted into the first sheath 320, the beveled bottom of the first blade 310 will compress the third elastic block 510, causing the third elastic block 510 to deform in the direction away from the other side of the first sheath 320, thereby facilitating the downward insertion of the first blade 310.

[0054] When the opening 500 on the first blade 310 is aligned with the first locking part 511, the third elastic block 510 loses the pressure of the first blade 310 and rebounds toward the other side of the first sheath 320, so that the first locking part 511 of the third elastic block 510 is engaged in the opening 500 of the first blade 310, thereby fixing the first blade 310 inside the first sheath 320.

[0055] Similarly, the bottom end of the second blade 410 is beveled, and an opening 500 is provided on the back of the blade. The second sheath 420 is a semi-closed structure with an opening at the top, and it includes two sides. One of the sides is provided with a fourth elastic block 520, and the fourth elastic block 520 is provided with a second locking part 521. When the second blade 410 is inserted into the second sheath 420, the beveled bottom of the second blade 410 will compress the fourth elastic block 520, causing the fourth elastic block 520 to deform in the direction away from the other side of the second sheath 420, thereby facilitating the downward insertion of the second blade 410.

[0056] When the opening 500 on the second blade 410 is aligned with the second locking part 521, the fourth elastic block 520 loses the pressure of the second blade 410 and rebounds toward the other side of the second sheath 420, so that the second locking part 521 of the fourth elastic block 520 is engaged in the opening 500 of the second blade 410, thereby fixing the second blade 410 inside the second sheath 420.

[0057] like Figure 14 , 15 As shown, optionally, both the first blade 310 and the second blade 410 have a symmetrical structure. The back of the first blade 310 has two arc-shaped openings 500, and both the upper and lower ends of the first blade 310 are beveled. That is, the first blade 310 has two installation methods. The first installation method is to insert the first blade 310 upright into the first sheath 320, in which case the lower arc-shaped opening 500 engages with the first locking part 511. When the blade edge of the first blade 310 is severely worn, the first blade 310 can be removed, flipped over, and inserted into the first sheath 320. In this case, the lower arc-shaped opening 500 is the same as the upper arc-shaped opening 500 before flipping, and this opening 500 engages with the first locking part 511.

[0058] The installation and use of the second blade 410 are the same as those of the first blade 310, so they will not be described again here.

[0059] like Figure 5 , 6 As shown, the top two sides of the housing 100 are respectively provided with a first through hole 150 and a second through hole 160. The first through hole 150 communicates with the first cavity 110, and the second through hole 160 communicates with the second cavity 120. A first pressing member 600 is provided in the first through hole 150, and a second pressing member 610 is provided in the second through hole 160. When the first blade 300 is fully extended from the first cavity 110, the first locking part 511 of the third elastic block 510 is aligned with the first through hole 150. Pressing the first pressing member 600 can cause the first locking part 511 to disengage from the opening 500 of the first blade 310, thereby allowing the first blade 310 to be removed from the first sheath 320. When the second blade 400 is fully extended from the second cavity 120, the second locking part 521 of the fourth elastic block 520 is aligned with the second through hole 160. Pressing the second pressing member 610 can cause the second locking part 521 to disengage from the opening 500 of the second blade 410, thereby allowing the second blade 410 to be removed from the second sheath 420.

[0060] like Figure 5 , 6As shown in Figures 7 and 10, furthermore, the top side of the housing 100 has a first through hole 150 and a first mounting groove 170 at both ends, and the other side of the top of the housing 100 has a second through hole 160 and a second mounting groove 180 at both ends. The first through hole 150 and the second through hole 160 are not located at the same end of the top of the housing 100, and the first mounting groove 170 and the second mounting groove 180 are not located at the same end of the top of the housing 100. The first pressing member 600 and the second pressing member 610 are both flexible, bent metal sheets. One end of the first pressing member 600 is fixedly installed in the second mounting groove 180, and the other end has a first head 601. The first head 601 is inserted into the first through hole 150. By pressing the first pressing member 600, the first head 601 can press the first locking part 511, thereby disengaging the first locking part 511 from the opening 500 of the first blade 310. One end of the second pressing member 610 is fixedly installed in the first mounting groove 170, and the other end has a second head 611. The second head 611 is inserted into the second through hole 160. By pressing the second pressing member 610, the second head 611 can squeeze the second locking part 521 so that the second locking part 521 is disengaged from the opening 500 of the second blade 410.

[0061] like Figure 16 , 17 As shown, the first side 210 of the intermediate plate 200 is further provided with a first slot 211, and the second side 220 of the intermediate plate 200 is further provided with a second slot 221. When the first cutter 300 is fully extended, the first slot 211 is aligned with the third elastic block 510. At this time, the third elastic block 510 is pressed by the first pressing member 600, which causes the third elastic block 510 to move toward the first slot 211, thereby causing the first locking part 511 to disengage from the opening 500 of the first cutter 310. The first slot 211 provides space for the displacement of the third elastic block 510. When the second cutter 400 is fully extended, the second slot 221 is aligned with the fourth elastic block 520. At this time, the fourth elastic block 520 is pressed by the second pressing member 610, which causes the fourth elastic block 520 to move toward the second slot 221, thereby causing the second locking part 521 to disengage from the opening 500 of the second blade 410. The second slot 221 provides space for the displacement of the fourth elastic block 520.

[0062] In summary, the blade replacement operation can only be performed when the first blade 300 and the second blade 400 are fully extended from the first cavity 110 and the second cavity 120.

[0063] like Figure 13As shown, in this embodiment, the first sheath 320 is also provided with a first limiting part 700. When the first snap-fit ​​part 511 snaps into the opening 500 of the first blade 310, the bottom inclined surface of the first blade 310 abuts against the first limiting part 700, thereby further increasing the installation stability of the first blade 310.

[0064] like Figure 12 As shown, the second sheath 420 is also provided with a second limiting part 710. When the second locking part 521 is engaged with the opening 500 of the second blade 410, the bottom inclined surface of the second blade 410 abuts against the second limiting part 710, thereby further increasing the installation stability of the second blade 410.

[0065] In this embodiment, the first slider 330 is connected to the first sheath 320 via the fifth elastic block 800, and the second slider 430 is connected to the second sheath 420 via the sixth elastic element.

[0066] like Figure 11 As shown, specifically, the sixth elastic block 810 is an L-shaped metal elastic element. The second slider 430 is connected to the sixth elastic block 810. When the second slider 430 slides, pressing the sixth elastic block 810 can adjust the second slider 430 to remain horizontal with the second cutter 400, so that the sliding direction of the second slider 430 is parallel to the sliding direction of the second cutter 400. This avoids the situation where the second slider 430 and the second cutter 400 are not parallel and thus lock up and cannot slide. Similarly, the connection method between the first slider 330 and the first cutter 300 is the same, and will not be described again here.

[0067] like Figure 1 , 2 As shown in Figure 8, optionally, the bottom of the housing 100 is provided with a removable storage slot 900 for storing the first blade 310 and the second blade 410. The storage slot 900 is also provided with a flexible metal clip for clamping the stored first blade 310 and second blade 410. When the first blade 310 and second blade 410 in the first sheath 320 and second sheath 420 are damaged, the first blade 310 and second blade 410 in the storage slot 900 can be replaced and installed.

[0068] In this embodiment, the cavity of the housing 100 of the double-headed cutter is divided into a first cavity 110 and a second cavity 120 by an intermediate plate 200. A first cutter 300 and a second cutter 400 are respectively provided in the first cavity 110 and the second cavity 120. The first cutter 300 and the second cutter 400 can slide along the first cavity 110 and the second cavity 120 respectively, thereby extending to the outside of the housing 100 or being stored inside the housing 100. The two different cutters adopt trapezoidal blades and horn blades respectively, thereby effectively improving the applicability of the cutter. Furthermore, the intermediate plate 200 is provided with a first elastic block 240 and a second elastic block 250. The side of the first elastic block 240 facing the first cavity 110 has a first protrusion 260, and the side of the second elastic block 250 facing the second cavity 120 has a second protrusion 280. When the first cutter 300 slides out of the first cavity 110, the first elastic block 240 deforms to limit the second cutter 400. When the second cutter 400 slides out of the second cavity 120, the second elastic block 250 deforms to limit the first cutter 300. This structure effectively ensures that the two cutters cannot extend out of the housing 100 at the same time, ensuring the safety of the cutter use. The opening 500 of the first blade 310 or the second blade 410 is matched with the structure of the third elastic block 510 or the fourth elastic block 520 so that the first blade 310 or the second blade 410 can be smoothly inserted into the first sheath 320 or the second sheath 420. When the opening 500 of the first blade 310 or the second blade 410 is aligned with the first locking part 511 or the second locking part 521, the first locking part 511 or the second locking part 521 springs back into the opening 500 of the first blade 310 or the second blade 410, thereby ensuring a stable connection between the first blade 310 or the second blade 410 and the first sheath 320 or the second sheath 420.

Claims

1. A double-ended cutting tool, characterized in that, The device includes a housing, an intermediate plate, a first cutting tool, and a second cutting tool. The housing has an internal cavity. The intermediate plate is disposed within the cavity of the housing and divides the cavity into a first chamber and a second chamber. The first cutting tool is disposed within the first chamber, and the second cutting tool is disposed within the second chamber. The first and second cutters can slide along the first and second cavities respectively, thereby extending outside the housing or being stored inside the housing.

2. The double-ended cutting tool according to claim 1, characterized in that, The housing has a first sliding groove and a second sliding groove on its two sides, respectively. The first sliding groove communicates with the first cavity, and the second sliding groove communicates with the second cavity. The first cutting tool includes a first blade, a first sheath, and a first slider. The first blade is installed inside the first sheath, with its tip extending out of the sheath. The first sheath slides within the first cavity. The first slider is connected to the first sheath and extends to the outside of the housing via a first groove. The first slider slides along the first groove, thereby causing the first sheath to slide within the first cavity. The second cutting tool includes a second blade, a second sheath, and a second slider. The second blade is installed inside the second sheath, with its head end extending out of the second sheath. The second sheath is slidably disposed in the second cavity. The second slider is connected to the second sheath and extends to the outside of the housing through a second groove. The second slider slides along the second groove, thereby driving the second sheath to slide within the second cavity.

3. The double-ended cutting tool according to claim 2, characterized in that, The middle plate has a first side and a second side on both sides, and both the first side and the second side are provided with guide rails. The first cutter slides along the guide rail of the first side, and the second cutter slides along the guide rail of the second side.

4. The double-ended cutting tool according to claim 3, characterized in that, The intermediate plate is provided with a first elastic block and a second elastic block. The first elastic block has a first protrusion on the side facing the first cavity. The first protrusion has a first inclined surface, which is opposite to the first cutter and is inclined from low to high along the direction in which the first cutter slides out of the first cavity. The other side of the first elastic block is lower than or flush with the second side of the intermediate plate. The second elastic block has a second protrusion on the side facing the second cavity. The second protrusion has a second inclined surface, which is opposite to the second cutter and is inclined from low to high along the direction in which the second cutter slides out of the second cavity. The other side of the second elastic block is lower than or flush with the first side of the intermediate plate. When the first cutter slides out of the first cavity, it compresses and deforms the first elastic block, causing the side of the first elastic block near the second side of the intermediate plate to bulge outward, thereby limiting the movement of the second cutter. When the second cutter slides out of the second cavity, it compresses and deforms the second elastic block. The side of the second elastic block closest to the first side of the middle plate protrudes outward, thereby limiting the first cutter.

5. The double-ended cutting tool according to claim 2, characterized in that, Both the first blade and the second blade have a symmetrical structure.

6. The double-ended cutting tool according to claim 5, characterized in that, The bottom end of the first blade is beveled, and an opening is provided on the back of the blade. The first sheath has a third elastic block on one side, and the third elastic block has a first locking part. When the first blade is inserted into the first sheath, the inclined surface at the bottom of the first blade presses against the third elastic block, causing the third elastic block to deform toward the side away from the first sheath. When the opening aligns with the first locking part, the third elastic block springs back, causing the first locking part to engage in the opening. The second sheath has a fourth elastic block on one side, and the fourth elastic block has a second locking part. When the second blade is inserted into the second sheath, the inclined surface at the bottom of the second blade presses the fourth elastic block, causing the fourth elastic block to deform toward the side away from the second sheath. When the opening is aligned with the second locking part, the fourth elastic block rebounds, so that the second locking part is locked into the opening.

7. The double-ended cutting tool according to claim 6, characterized in that, The top of the housing is provided with a first through hole and a second through hole on each of its two sides. The first through hole communicates with the first cavity, and the second through hole communicates with the second cavity. A first pressing element is provided in the first through hole, and a second pressing element is provided in the second through hole. When the first cutter extends out of the first cavity, the third elastic block aligns with the first through hole. Pressing the first pressing member can disengage the first locking part from the opening of the first cutter. When the second cutter extends out of the second cavity, the fourth elastic block aligns with the second through hole, and pressing the second pressing member can cause the second locking part to disengage from the opening of the second blade.

8. The double-ended cutting tool according to claim 6, characterized in that, The first sheath is provided with a first limiting part. When the first locking part engages with the opening of the first blade, the bottom bevel of the first blade abuts against the first limiting part. The second sheath is also provided with a second limiting part. When the second locking part is engaged with the opening of the second blade, the bottom inclined surface of the second blade abuts against the second limiting part.

9. The double-ended cutting tool according to any one of claims 2-8, characterized in that, The first slider is connected to the first sheath via a fifth elastic block, and the second slider is connected to the second sheath via a sixth elastic element.

10. The double-ended cutting tool according to claim 9, characterized in that, The bottom of the housing is provided with a removable storage slot for storing the first blade and the second blade.

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