Multi-purpose knife

Abstract

The present invention discloses a multifunctional knife, which belongs to manual knives. Existing utility knives have a single function, a large size and a complex structure. The present invention assembles a retractable blade for realizing a first function in a knife handle, and a second functional part for cooperating with the blade to realize a second function is provided at one end of the knife handle. Different usage functions can be selected according to needs, such as extending the blade to be used as a conventional utility knife, or cooperating the blade with the second functional part to be used as a cutting knife; moreover, functions such as wire stripping can also be realized. Different usage requirements in different usage scenarios can be realized, time can be saved, and work efficiency can be improved.

Description

Technical Field

[0001] The invention belongs to manual knives, and in particular relates to a multifunctional knife. Background Art

[0002] As a common cutting tool, the existing utility knife has many usage scenarios, but its function is single. There are also tools that realize more than two functions, but most of them are simple superpositions of various functions, and the functions are not related to each other, resulting in a large product size and complex structure. Summary of the invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to overcome the defects of the existing utility knife, that is, the single function, the large size and the complex structure of the multifunctional knife, and to provide a multifunctional knife with a compact structure.

[0004] To achieve the above-mentioned purpose, the multifunctional knife of the present invention comprises an elongated first functional portion, wherein the first functional portion comprises a handle and a retractable blade installed in the handle to realize a first function, and is characterized in that a second functional portion cooperating with the blade to realize a second function is provided at one end of the handle.

[0005] As a preferred technical means: the second functional part has a cutting edge and a through slit corresponding to the blade, the blade extends through the through slit to achieve the first function, and the blade edge of the blade is exposed at the cutting edge to achieve the second function.

[0006] As a preferred technical means: the second functional part is provided with a blocking structure which can block the through slit or open the through slit, the blocking structure opens the through slit to allow the blade to extend through the through slit to realize the first function, and the blocking structure blocks the through slit to prevent the blade from extending through the through slit to realize the second function.

[0007] As a preferred technical means: the blocking structure is a reversible sheath arranged at one end of the through slit.

[0008] As a preferred technical means: the blocking structure is a button arranged on the second functional part and intersecting with the through slit, and the button is provided with an avoidance portion, and pressing the button can make the avoidance portion correspond to the through slit or deviate from the through slit.

[0009] As a preferred technical means: the second functional part and the button are separately provided with positioning ribs and positioning grooves, and the positioning ribs are located in the positioning grooves to position the avoidance part at a position corresponding to the through slit or deviating from the through slit.

[0010] As a preferred technical means: the second functional part is made into one piece with the knife handle.

[0011] As a preferred technical means: the second functional part is assembled at one end of the knife handle.

[0012] As a preferred technical means: the second functional part is separately provided with an insertion hole and an insertion section at one end of the knife handle, the side wall of the insertion hole is provided with a positioning hole, the side of the insertion section is provided with a positioning protrusion, the insertion section is inserted into the insertion hole and the positioning protrusion is located in the positioning hole.

[0013] As a preferred technical means: the second functional portion is separately provided with a transverse T-shaped groove and a T-shaped convex rib from one end of the knife handle, and the T-shaped convex rib is inserted into the T-shaped groove.

[0014] As a preferred technical means: positioning points and positioning pits are separately provided on the side walls of the T-shaped groove and the T-shaped convex rib, and when the T-shaped convex rib is inserted into the T-shaped groove, the positioning point is located in the positioning pit.

[0015] As a preferred technical means: the second functional part is an assembly part, which includes a base and a cover plate, and the cover plate is assembled on the base by fasteners.

[0016] As a preferred technical means: the multifunctional knife also includes a third functional part assembled at the other end of the handle for replacing the second functional part.

[0017] As a preferred technical means: the other end of the knife handle is equipped with a tail cover, and the tail cover is provided with an insertion slot.

[0018] As a preferred technical means: a slide groove is provided on the knife handle, a positioning notch is provided on the edge of the slide groove, a push button assembly is installed on the knife handle, and the push button assembly includes a slide seat, an elastic element, a stop pin, and a push button. The slide seat is installed in the slide groove, the elastic element is installed on the slide seat, the stop pin is supported by the elastic element and is located in the positioning notch, the push button is installed on the slide seat and constrains the stop pin, and the blade is connected to the slide seat.

[0019] The present invention assembles a retractable blade for realizing a first function in the knife handle, and a second functional part for cooperating with the blade to realize a second function is provided at one end of the knife handle. Different functions can be selected according to needs, such as extending the blade to be used as a conventional utility knife, or cooperating the blade with the second functional part to be used as a cutting knife; moreover, functions such as wire stripping can also be realized. Different usage requirements in different usage scenarios are realized, time is saved, and work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of embodiment 1 of the multifunctional knife of the present invention;

[0021] Figure 2is a schematic diagram of Embodiment 2 of the multifunctional knife of the present invention;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 for Figure 2 An exploded schematic diagram of the structure shown;

[0024] Figure 5 is a schematic diagram of Embodiment 3 of the multifunctional knife of the present invention;

[0025] Figure 6 for Figure 5 BB section view;

[0026] Figure 7 for Figure 6 CC section view;

[0027] Figure 8 is a schematic diagram of embodiment 4 of the multifunctional knife of the present invention;

[0028] Fig. 9 for Figure 8 DD section view;

[0029] Fig.10 is a schematic diagram of Embodiment 5 of the multifunctional knife of the present invention;

[0030] Fig.11 for Fig.10 EE section view;

[0031] Fig.12 for Fig.10 FF section view;

[0032] Fig.13 For configuration in Fig.14 A schematic diagram of a third functional unit on the top;

[0033] Fig.14 is a schematic diagram of Example 6 of the multifunctional knife of the present invention;

[0034] Description of the numbers in the figure:

[0035] 100-first functional part: 101-handle, 102-blade, 103-push button assembly, 104-slide groove, 105-positioning notch, 106-slide seat, 107-elastic element, 108-stop pin, 109-push button, 110-V-shaped notch 110, 111-plug-in section, 112-positioning protrusion, 113-T-slot, 114-positioning pit;

[0036] 200-second functional part: 201-cutting edge, 202-through slit, 203-base, 204-cover plate, 205-fastener, 206-pin, 207-sheath, 208-button, 209-slot, 210-positioning rib, 211-positioning groove, 212-jack, 213-positioning hole, 214-T-shaped convex rib, 215-positioning point;

[0037] 300-tail cover, 301-insert seam;

[0038] 400-the third functional unit, 401-the wire slot. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] Example 1

[0041] like Figure 1 The present invention shows a multifunctional knife having the functions of a utility knife and a cutting knife.

[0042] The multifunctional knife comprises an elongated first functional part 100, which comprises a handle 101 and a retractable blade installed in the handle 101 for realizing a first function. The blade is retracted by a push button assembly 103. The first functional part 100 forms a utility knife. The blade can be pushed out of the handle 101 by the push button assembly 103 for use such as cutting, and the blade can be retracted into the handle 101 for storage by the push button assembly 103.

[0043] The push button assembly 103 is described in detail in Embodiment 2 described below.

[0044] In order to make the art knife as the first functional part 100 have more functions, a second functional part 200 is provided at one end of the knife handle 101 to cooperate with the blade to realize the second function. The second functional part 200 is made integrally with the knife handle 101. The second functional part 200 is a cutting knife, which has a cutting edge 201 and a through slit 202 corresponding to the blade. The blade can extend through the through slit 202 to realize the first function, and the blade edge is exposed at the cutting edge 201 to realize the second function.

[0045] In addition, the other end of the handle 101 is equipped with a tail cover 300, and a blade insertion slot is provided on the tail cover 300. When the blade head becomes not sharp enough after use, the tail cover 300 can be removed and the blade head can be inserted into the insertion slot of the tail cover 300 to break it off.

[0046] Example 2

[0047] like Figure 2-4 The present invention shows a multifunctional knife having the functions of a utility knife and a cutting knife.

[0048] The multifunctional knife comprises an elongated first functional part 100, which comprises a handle 101 and a retractable blade 102 installed in the handle 101 for realizing a first function. The blade 102 is retracted by a push button assembly 103. The first functional part 100 forms a utility knife. The blade 102 can be pushed out of the handle 101 by the push button assembly 103 for use such as cutting, and the blade 102 can be retracted into the handle 101 for storage by the push button assembly 103.

[0049] In order to realize the blade 102 being extended and retracted by the push button assembly 103, a slide groove 104 is provided on the knife handle 101, and a positioning notch 105 is provided on the edge of the slide groove 104. The push button assembly 103 is mounted on the knife handle 101, and the push button assembly 103 includes a slide seat 106, an elastic element 107, a stop pin 108, and a push button 109. The slide seat 106 is mounted in the slide groove 104 and can slide along the slide groove 104. The plate-shaped elastic element 107 is mounted on the slide seat 106. The stop pin 108 is located at one side of the elastic element 107 and is supported by the elastic element 107 and located at the positioning notch 105. The push button 109 is mounted on the slide seat 106 and constrained by the V-shaped notch 110 facing the stop pin 108, thereby positioning the entire push button assembly 103 on the knife handle 101. The blade 102 is connected to the slide seat 106. When the blade 102 is to be extended or retracted, the push button 109 is pressed to overcome the elastic force of the elastic element 107, so that the stop pin 108 is separated from the positioning notch 105, and the push button 109 can be pushed to extend or retract the blade 102. When the push button 109 is released, the elastic force of the elastic element 107 causes the stop pin 108 to be relocated in the positioning notch 105 to achieve positioning.

[0050] In order to make the art knife as the first functional part 100 have more functions, a second functional part 200 is provided at one end of the handle 101 to cooperate with the blade 102 to realize the second function. The second functional part 200 is an assembly part, which includes a base 203 and a cover plate 204 that are made as a whole with the handle. The cover plate 204 is assembled on the base 203 by a fastener 205. Such an assembly structure is convenient for disassembling the product and maintaining the product when necessary. The second functional part 200 is a cutting knife, which has a cutting edge 201 and a through slit corresponding to the blade 102. The blade 102 can extend through the through slit to realize the first function, and the blade 102 is exposed at the cutting edge 201 to realize the second function.

[0051] In order to avoid potential safety hazards caused by the product being in the first function state when the second function is used, the second function part 200 is provided with a blocking structure that can block the through slit or open the through slit. The blocking structure opens the through slit to allow the blade 102 to extend through the through slit to achieve the first function, and the blocking structure blocks the through slit to block the blade 102 from extending through the through slit, so that the blade 102 is exposed at the cutting edge 201 to achieve the second function. Specifically, the blocking structure is a reversible sheath 207 provided at one end of the through slit and assembled on the second function part 200 through a pin 206. By reversing the sheath 207, the position of the sheath 207 can be changed to open or block the through slit.

[0052] Similarly, the other end of the handle 101 is equipped with a tail cover 300, and a slit 301 for inserting the blade 102 is provided on the tail cover 300. When the head of the blade 102 becomes not sharp enough after use, the tail cover 300 can be removed and the head of the blade 102 can be inserted into the slit 301 of the tail cover 300 to break it off.

[0053] Example 3

[0054] like Figure 5-7 The present invention shows a multifunctional knife having the functions of a utility knife and a cutting knife.

[0055] The multifunctional knife comprises an elongated first functional part 100, which comprises a handle 101 and a retractable blade 102 installed in the handle 101 for realizing a first function. The blade 102 is retracted by a push button assembly 103. The first functional part 100 forms a utility knife. The blade 102 can be pushed out of the handle 101 by the push button assembly 103 for use such as cutting, and the blade 102 can be retracted into the handle 101 for storage by the push button assembly 103.

[0056] In order to realize the extension and retraction of the blade 102 by the push button assembly 103, the multifunctional knife adopts the structure of embodiment 2.

[0057] In order to make the art knife as the first functional part 100 have more functions, a second functional part 200 is provided at one end of the handle 101 to cooperate with the blade 102 to realize the second function, and the second functional part 200 is made integrally with the handle 101. The second functional part 200 is a cutting knife, which has a cutting edge 201 and a through slit corresponding to the blade 102. The blade 102 can extend through the through slit to realize the first function, and the blade 102 is exposed at the cutting edge 201 to realize the second function.

[0058] As in Example 2, in order to avoid potential safety hazards caused by the product being in the first function state when the second function is used, the second function part 200 is also provided with a blocking structure that can block the through slit or open the through slit, but the blocking structure is a button 208 arranged on the second function part 200 and intersecting with the through slit, and a slot 209 is arranged on the button 208 as an avoidance part. Pressing the button 208 can make the avoidance part correspond to the through slit or deviate from the through slit. When the avoidance part corresponds to the through slit, the blade can extend through the avoidance part and the through slit, and when the avoidance part deviates from the through slit, the blade is blocked from extending through the avoidance part and the through slit. In order to ensure the working position of the button 208, the second function part 200 and the button 208 are separately provided with a positioning rib 210 and a positioning groove 211. The positioning rib 210 is located in the positioning groove 211 to position the avoidance part at a position corresponding to the through slit or deviating from the through slit. Although the specific locations of the positioning ribs 210 and the positioning grooves 211 are shown in the figure, their locations can be interchanged during implementation.

[0059] Similarly, the other end of the handle 101 is equipped with a tail cover 300, and a slot is provided on the tail cover 300. When the blade head becomes not sharp enough after use, the tail cover 300 can be removed and the blade head can be inserted into the slot of the tail cover 300 to break it off.

[0060] Example 4

[0061] like Figure 8-9 The present invention shows a multifunctional knife having the functions of a utility knife and a cutting knife.

[0062] Only the left end of the multifunctional knife is shown, and the unshown parts are the same as those in Example 2 and will not be described in detail here.

[0063] like Figure 8-9 As shown, the second functional part 200 is assembled at one end of the knife handle 101 as an independent structural part. Specifically, the second functional part 200 is separately provided with an insertion hole 212 and an insertion section 111 at one end of the knife handle 101, the side wall of the insertion hole 212 is provided with a positioning hole 213, and the side of the insertion section 111 is provided with a positioning protrusion 112. The insertion section 111 is inserted into the insertion hole 212 and the positioning protrusion 112 is located in the positioning hole 213 to prevent the insertion section 111 from escaping from the insertion hole 212, thereby realizing the assembly of the second functional part 200 and the knife handle 101. Accordingly, the second functional part 200 can be installed or removed according to the use requirements. Although the specific setting positions of the insertion hole 212 and the insertion section 111 are shown in the figure, the positions can be interchanged during implementation.

[0064] Example 5

[0065] like Figure 10-12 The present invention shows a multifunctional knife having the functions of a utility knife and a cutting knife.

[0066] The multifunctional knife is different from the multifunctional knife of Example 4 only in the way in which the second functional part 200 is assembled at one end of the handle 101. The rest of the structure is the same as that of Example 4, and the same parts are not repeated here.

[0067] like Figure 10-12 As shown, the second functional part 200 is assembled as an independent structural part at one end of the handle 101. Specifically, the second functional part 200 is separated from one end of the handle 101 and is provided with a transverse T-shaped groove 113 and a T-shaped convex rib 214, and the T-shaped convex rib 214 is inserted into the T-shaped groove 113. The transverse direction is relative to the handle 101, that is, the direction perpendicular to the length of the handle 101 is transverse. Fig.10 Specifically shown is the up and down direction. Accordingly, the second functional part 200 can be installed or removed according to the use requirements. In order to ensure the firmness of the assembly, the side wall of the T-shaped groove 113 and the T-shaped convex rib 214 are separately provided with a positioning point 215 and the second functional part 200. When the T-shaped convex rib 214 is inserted into the T-shaped groove 113, the positioning point 215 is located at the second functional part 200 to prevent the T-shaped convex rib 214 from coming out of the T-shaped groove 113. Although the specific setting positions of the T-shaped groove 113 and the T-shaped convex rib 214 are shown in the figure, the positions can be interchanged during implementation.

[0068] Example 6

[0069] like Figure 13-14 It is a multifunctional knife with three functions of utility knife, cutting knife and wire stripping knife.

[0070] Fig.14 The multifunctional knife shown in the figure lacks a tail cover compared to the embodiment 1, and the rest of the structure is the same as the embodiment 1. Fig.14 The multi-function knife shown is equipped with Fig.13 The wire stripper shown as the third functional part 400, the third functional part 400 and the second functional part 200 are respectively assembled at the two ends of the handle 101, and when in use, the third functional part 400 or the second functional part 200 is assembled on the end of the handle 101 where the blade 102 can extend to work according to the use requirements. The wire stripper is provided with a wire groove 401 corresponding to the diameter of the cable at its edge, and when in use, the blade 102 extends to the wire groove 401, and the blade can strip the wire from the bare aluminum of the wire groove 401. The assembly method of the third functional part 400, the second functional part 200 and the handle 101 can be any assembly method of the second functional part and the handle in the aforementioned embodiment.

Claims

1. A multifunctional knife, comprising a first elongated functional portion, wherein the first functional portion comprises a handle and a retractable blade installed in the handle for realizing a first function, wherein: One end of the knife handle is provided with a second functional portion cooperating with the blade to realize a second function; The second functional part has a cutting edge and a through slit corresponding to the blade, the blade extends through the through slit to achieve the first function, and the blade edge is exposed at the cutting edge to achieve the second function; The second functional portion is provided with a blocking structure capable of blocking the through slit or opening the through slit, wherein the blocking structure opens the through slit to allow the blade to extend through the through slit to realize the first function, and the blocking structure blocks the through slit to prevent the blade from extending through the through slit to realize the second function; The blocking structure is a button arranged on the second functional part and intersecting with the through slit. The button is provided with an avoidance portion. Pressing the button can make the avoidance portion correspond to the through slit or deviate from the through slit.

2. The multifunctional knife according to claim 1, characterized in that: The second functional portion and the button are separately provided with positioning ribs and positioning grooves, and the positioning ribs are located in the positioning grooves to position the avoidance portion at a position corresponding to the through slit or deviating from the through slit.

3. The multifunctional knife according to claim 1, characterized in that: The second functional part is made integrally with the knife handle.

4. The multifunctional knife according to claim 1, characterized in that: The second functional portion is mounted on one end of the handle.

5. The multifunctional knife according to claim 4, characterized in that: The second functional part is separately provided with an insertion hole and an insertion section at one end of the knife handle, the side wall of the insertion hole is provided with a positioning hole, the side surface of the insertion section is provided with a positioning protrusion, the insertion section is inserted into the insertion hole and the positioning protrusion is located in the positioning hole.

6. The multifunctional knife according to claim 4, characterized in that: The second functional part is provided with a transverse T-shaped groove and a T-shaped convex rib separately from one end of the knife handle, and the T-shaped convex rib is inserted into the T-shaped groove.

7. The multifunctional knife according to claim 6, characterized in that: Positioning points and positioning pits are separately arranged on the side walls of the T-shaped groove and the T-shaped convex rib. When the T-shaped convex rib is inserted into the T-shaped groove, the positioning point is located in the positioning pit.

8. The multifunctional knife according to claim 1, characterized in that: The second functional part is an assembly part, which includes a base and a cover plate, and the cover plate is assembled on the base by fasteners.

9. The multifunctional knife according to claim 1, characterized in that: The multifunctional knife further comprises a third functional part which is mounted on the other end of the knife handle and is used to replace the second functional part.

10. The multifunctional knife according to claim 1, characterized in that: The other end of the knife handle is equipped with a tail cover, and the tail cover is provided with an insertion slot.

11. The multifunctional knife according to claim 1, characterized in that: The knife handle is provided with a slide groove, and the edge of the slide groove is provided with a positioning notch. The knife handle is equipped with a push button assembly, and the push button assembly includes a slide seat, an elastic element, a stop pin, and a push button. The slide seat is installed in the slide groove, and the elastic element is installed on the slide seat. The stop pin is supported by the elastic element and is located in the positioning notch. The push button is installed on the slide seat and constrains the stop pin. The blade is connected to the slide seat.

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