Multifunctional practical knife

Abstract

The utility model discloses a multifunctional practical knife, which relates to the technical field of knives and comprises a knife body, two sides of the knife body are respectively connected with a first side cover and a second side cover, one end of the knife body connected with the first side cover is provided with a first internal channel, and one end of the knife body connected with the second side cover is provided with a second internal channel. A first opening is formed in the end of the first internal channel, a second opening is formed in the end of the second internal channel, and the second opening is connected with the back face of the blade. The structure is simple, use is convenient, the art knife and the scraper are provided with two different openings, and misoperation can be prevented during use.

Description

Technical Field

[0001] The utility model relates to the technical field of knives, in particular to a multifunctional practical knife. Background Art

[0002] In the prior art, products that combine a utility knife with a scraper usually use a blade that rotates to achieve the transformation of the blade shape, thereby achieving the transformation between the utility knife and the scraper. This transformation method results in a complex transformation structure inside the blade body, which is very prone to failure or operation errors, thus posing a threat to the user.

[0003] For example, Chinese patent CN216940802U, published on July 12, 2022, relates to a rotatable utility knife, including a blade body and a blade cover, a knife holder, a T-shaped blade, a handle, and a connecting rod mechanism that are snap-fitted together. The inner side of the blade body is provided with a first slide rail, a second slide rail, a knife holder slide rail, a tension spring fixing column, and a handle fixing column. The outer side of the blade body is also provided with a blade body button at a position corresponding to the first slide rail; the inner side of the knife cover is also provided with a third slide rail, a knife holder slide rail, and a safety lock fixing groove; the connecting rod mechanism includes a first connecting rod, a second connecting rod, and a third connecting rod connected in sequence, and the third connecting rod is also provided with a first fixing button and a second fixing button, and the handle is also provided with a first arc track and a second arc track. This scheme realizes the mode conversion by rotating the blade through the internal conversion structure, and the internal structure is relatively complex and prone to failure. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing utility knife and scraper combined tool has a complicated internal conversion structure. A multifunctional utility knife is proposed, which has two independent installation slots for the utility knife and the scraper, which do not affect each other, have a simple structure and are not prone to failure.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional utility knife, including a blade body, wherein both sides of the blade body are respectively connected to a first side cover and a second side cover, a first internal channel is provided at one end of the blade body connected to the first side cover, a second internal channel is provided at one end of the blade body connected to the second side cover, a first opening is provided at the end of the first internal channel, a second opening is provided at the end of the second internal channel, a slidable blade support assembly is provided in the first internal channel, and the blade support assembly is connected to a brake button.

[0006] A multifunctional utility knife, wherein a blade body, a first side cover and a second side cover form an integral knife holder structure; a first internal channel between the first side cover and the blade body is used to place a blade in a straight knife state, the blade extending from a first opening; a second internal channel arranged between the blade body and the second side plate is used to place a blade in a window scraper state; when in the practical window scraper state, the back of the blade is fixed to the second opening; the blades in the window scraper state and the straight knife state use different installation channels, do not interfere with each other, and are easy to switch; the internal structure is simple and not prone to errors; a slidable blade support assembly is arranged in the first internal channel, the blade support assembly is connected to a brake button, and the movement of the straight knife blade is controlled by the brake button.

[0007] Preferably, the second opening is provided with a semicircular ring and a plurality of limiting blocks, a limiting hole is provided inside the blade, a fixing hole is provided in the middle of the blade, the semicircular ring is embedded in the fixing hole, and the limiting block is embedded in the limiting hole. The blade is limited by the semicircular ring and the limiting block, and the blade in the window scraper state is fixed at the second opening.

[0008] Preferably, the blade back of the blade installed in the second opening faces inward, the blade is trapezoidal, and the length of the second opening is equal to the length of the blade back. The length of the blade back is equal to the length of the hypotenuse at the fixing point of the second opening.

[0009] Preferably, the second side panel is provided with a push button lock, the push button lock is provided with a latch, the blade body is provided with an L-shaped lock buckle at a position relative to the latch, and the latch and the lock buckle form a mortise and tenon structure. By pushing the push button lock, the latch and the lock buckle are released, thereby opening the second side panel and taking out the blade.

[0010] Preferably, a blade support assembly is provided in the first internal channel, the blade support assembly is provided with a fixing column, and the fixing column is embedded in the fixing hole. The blade in the straight blade state is fixed on the blade support assembly and moves with the movement of the blade support assembly.

[0011] Preferably, the blade support assembly is connected to a brake button, the first side cover is provided with a slide groove, and the brake button is embedded in the slide groove. The movement of the blade support assembly is achieved by pushing the brake button.

[0012] Preferably, a blade locking assembly is provided at the end of the first internal channel, the blade locking assembly is connected to the blade, and the blade locking assembly is connected to an unlocking button located on the surface of the first side cover. The unlocking button provided on the surface of the first side cover can limit the movement of the blade in the straight blade state, and the blade in the straight blade state can only move when the unlocking button is pressed.

[0013] Preferably, the second internal passage is provided with a blade magazine, in which spare blades are stored. The blade magazine can store a plurality of spare blades.

[0014] Preferably, the bottom of the second side cover is hinged to the blade body. A hinge structure is provided on the side of the blade body tail close to the second side cover, and the second side cover and the blade body are hinged, and the second side cover can be rotated to open through the hinge structure.

[0015] Preferably, the brake button drives the blade support assembly to move in the slide slot, and the blade support assembly drives the blade to move, and when the brake button moves to the bottom of the slide slot, the blade is entirely located in the first internal channel. When the brake buttons are located at both ends of the slide slot, the straight knife blade is in a fully retracted or fully released state, and the length of the slide slot is the blade stroke length.

[0016] The substantial effect of the utility model is that the utility model combines the functions of a utility knife and a scraper, and can be converted between the two. The utility knife and the scraper have a simple structure and are easy to use. The utility knife and the scraper have two different openings, which can also prevent misoperation during use. There is a hidden knife magazine function, which can store extra blades for easy replacement. The product is small and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a state diagram of the straight blade of the first embodiment;

[0018] Figure 2 This is a state diagram of the window scraper of Embodiment 1;

[0019] Figure 3 The straight blade knife and the window scraper knife of the first embodiment are in the retracted state;

[0020] Figure 4 This is an internal diagram of the first side cover of Embodiment 1;

[0021] Figure 5 This is an internal view of the second side cover of Example 2.

[0022] Among them: 1. first side cover, 2. second side cover, 3. first internal channel, 4. second internal channel, 5. first opening, 6. second opening, 7. semicircular ring, 8. limit block, 9. limit hole, 10. fixing hole, 11. push button lock, 12. lock buckle, 13. latch, 14. blade support assembly, 15. fixing column, 16. brake button, 17. slide groove, 18. blade locking assembly, 19. unlocking button, 20. blade magazine, 21. anti-slip pattern, 22. blade, 23. blade back. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below through specific embodiments and in conjunction with the accompanying drawings.

[0024] Embodiment one:

[0025] Multifunctional utility knife, such as Figure 1 , Figure 2 and Figure 3 As shown, the overall frame of the knife is mainly composed of three parts: a blade body, a first side cover 1 and a second side cover 2. Among them, the first side cover 1 and the second side cover 2 are connected to the blade body at the tail of the blade body through a hinge structure. The second side cover 2 is fixed to the blade body through a mortise and tenon structure, and the second side cover 2 can be opened around the hinge structure by unfastening the mortise and tenon structure. A plurality of columns with internal threaded holes are provided on the side where the blade body is connected to the first side cover 1. A fixing hole 10 is provided at the corresponding position of the first side cover 1. The bolt passes through the fixing hole 10 and is embedded in the threaded hole, so that the first side cover 1 is fixed to the blade body. The blade body is arranged in a rectangular shape as a whole, and extends outward near the tail streamline to make the grip feel better. The rear end of the blade body is slightly wider than the gripping part to prevent it from slipping out of the hand.

[0026] The space between the first side cover 1 and the blade body is the first internal channel 3, and the opening between the first side cover 1 and the end of the blade body relative to the first internal channel 3 is the first opening 5. The first internal channel 3 is used to accommodate the blade 22 in the straight knife state, in which the back 23 of the blade faces upward and the cutting surface faces downward. An unlocking button 19 is provided near the blade outlet of the first side plate. When the blade needs to be pushed, the unlocking button 19 is pressed to unlock it. If the unlocking button 19 is not pressed, the blade will be locked and cannot move. The middle part of the first side cover 1 is a long slide 17, and a brake button 16 that can move along the slide 17 is provided in the slide 17. Pushing the brake button 16 can make the blade move left and right along the direction of the slide 17. An anti-slip pattern 21 is provided at the lower part of the first side cover 1 to prevent the user from slipping during use.

[0027] The space between the second side cover 2 and the blade body is the second internal channel 4, and the opening opened between the second side cover 2 and the end of the blade body relative to the second internal channel 4 is the second opening 6. The second internal channel 4 is used to accommodate the blade in the window scraper state, in which the back of the blade faces the second internal channel 4 and the cutting surface faces the outside. Normally, the blade is stored inside the second channel to prevent accidental injury. When using, the second side cover 2 is opened first, and the blade can be used after it is installed. In this embodiment, the installed blade in the window scraper state is perpendicular to the blade body. A push button lock 11 is provided on the second side plate, and the push button lock 11 can be designed to unlock left and right or to unlock up and down according to actual conditions. Push the push button lock 11, the internal mortise and tenon structure is separated, and the second side cover 2 can be opened. The second side cover 2 is also provided with anti-slip grooves 21 at the position relative to the first side cover 1 to prevent the user from slipping when using it.

[0028] like Figure 4 As shown, a blade support assembly 14 is arranged in the first internal channel 3, and the blade support assembly 14 is mainly composed of a support base and a sliding device. An inward sliding groove 17 is arranged on the support base, and an outward sliding rail matching therewith is arranged on the sliding device, and the support base and the sliding device are connected and fixed with the sliding rail through the sliding groove 17. Therefore, the sliding device can move on the support base. The size of the support base matches the size of the first internal channel 3. A fixing column 15 is arranged on the sliding device, and the fixing column 15 is embedded in the fixing hole 10 of the blade, so as to fix the blade on the sliding device. The upper and lower widths of the internal accommodation space of the sliding device are equal to the width from the back of the blade to the cutting surface, which can prevent the blade from rotating and causing the phenomenon of stuck position. The sliding device is also connected to a brake button 16. The brake button 16 is connected to the blade body through a plurality of springs.

[0029] The first inner passage is provided with a blade locking assembly 18 near the first opening 5, and the blade locking assembly 18 is slidably connected to the blade. The blade locking assembly 18 is arranged near the first opening 5 to lock the blade during the entire sliding process. The blade locking assembly 18 is connected to an unlocking button 19 arranged on the first side cover 1.

[0030] The blade in the window scraper state is mainly fixed at the second opening 6. A semicircular ring 7 is arranged in the middle position of the edge of the second opening 6, and the diameter of the semicircular ring 7 is slightly smaller than the diameter of the fixing hole 10 on the blade. A fixing hole 10 is arranged in the middle position of the blade, and two limiting holes 9 are arranged on the back of the blade, and the shape of the limiting hole 9 is U-shaped. According to the relative position relationship between the fixing hole 10 and the limiting hole 9 on the blade, two limiting blocks 8 are arranged at the position of the second opening 6 relative to the semicircular ring 7. When installing the blade, align the fixing hole 10 of the blade with the semicircular ring 7, align the limiting hole 9 with the limiting block 8, and then cover the second side panel to complete the installation. After the installation is completed, the second side panel fits with the semicircular ring 7 and the limiting block 8 on the blade body to prevent the blade from slipping out of the gap. The semicircular ring 7 and the limiting block 8 can prevent the blade from moving left and right or up and down, and play a limiting role.

[0031] This embodiment combines the functions of a utility knife and a scraper, and can be converted between the two. It has a simple structure and is easy to use. The utility knife and the scraper have two different openings, which can also prevent misoperation during use.

[0032] Embodiment 2:

[0033] The overall frame of the knife in this embodiment is mainly composed of three parts: a blade body, a first side cover 1 and a second side cover 2. Among them, the first side cover 1 and the second side cover 2 are connected to the blade body at the tail of the blade body through a hinge structure. The second side cover 2 is fixed to the blade body through a mortise and tenon structure, and the second side cover 2 can be opened around the hinge structure by unfastening the mortise and tenon structure. A plurality of columns with internal threaded holes are provided on the side where the blade body is connected to the first side cover 1, and a fixing hole 10 is provided at the corresponding position of the first side cover 1. The bolt passes through the fixing hole 10 and is embedded in the threaded hole, so that the first side cover 1 is fixed to the blade body. The blade body is arranged in a rectangular shape as a whole, and extends outward near the tail streamline to make the grip feel better. The rear end of the blade body is slightly wider than the gripping part to prevent it from slipping out of the hand.

[0034] The space between the first side cover 1 and the blade body is the first internal channel 3, and the opening between the first side cover 1 and the end of the blade body relative to the first internal channel 3 is the first opening 5. The first internal channel 3 is used to accommodate the blade in the straight knife state, in which the back of the blade faces upward and the cutting surface faces downward. An unlocking button 19 is provided near the blade outlet of the first side plate. When the blade needs to be pushed, the unlocking button 19 is pressed to unlock it. If the unlocking button 19 is not pressed, the blade will be locked and cannot move. The middle part of the first side cover 1 is a long slide 17, and a brake button 16 that can move along the slide 17 is provided in the slide 17. Pushing the brake button 16 can make the blade move left and right along the direction of the slide 17. An anti-slip pattern 21 is provided at the lower part of the first side cover 1 to prevent the user from slipping during use.

[0035] The space between the second side cover 2 and the blade body is the second internal channel 4, and the opening opened between the second side cover 2 and the end of the blade body relative to the second internal channel 4 is the second opening 6. The second internal channel 4 is used to accommodate the blade in the window scraper state, in which the back of the blade faces the second internal channel 4 and the cutting surface faces the outside. Normally, the blade is stored inside the second channel to prevent accidental injury. When using, the second side cover 2 is opened first, and the blade can be used after it is installed. In this embodiment, the installed blade in the window scraper state is perpendicular to the blade body. A push button lock 11 is provided on the second side plate, and the push button lock 11 can be designed to unlock left and right or to unlock up and down according to actual conditions. Push the push button lock 11, the internal mortise and tenon structure is separated, and the second side cover 2 can be opened. The second side cover 2 is also provided with anti-slip grooves 21 at the position relative to the first side cover 1 to prevent the user from slipping when using it.

[0036] like Figure 4 As shown, a blade support assembly 14 is arranged in the first internal channel 3, and the blade support assembly 14 is mainly composed of a support base and a sliding device. An inward sliding groove 17 is arranged on the support base, and an outward sliding rail matching therewith is arranged on the sliding device, and the support base and the sliding device are connected and fixed with the sliding rail through the sliding groove 17. Therefore, the sliding device can move on the support base. The size of the support base matches the size of the first internal channel 3. A fixing column 15 is arranged on the sliding device, and the fixing column 15 is embedded in the fixing hole 10 of the blade, so as to fix the blade on the sliding device. The upper and lower widths of the internal accommodation space of the sliding device are equal to the width from the back of the blade to the cutting surface, which can prevent the blade from rotating and causing the phenomenon of stuck position. The sliding device is also connected to a brake button 16. The brake button 16 is connected to the blade body through a plurality of springs.

[0037] The first inner passage is provided with a blade locking assembly 18 near the first opening 5, and the blade locking assembly 18 is slidably connected to the blade. The blade locking assembly 18 is arranged near the first opening 5 to lock the blade during the entire sliding process. The blade locking assembly 18 is connected to an unlocking button 19 arranged on the first side cover 1.

[0038] The blade in the window scraper state is mainly fixed at the second opening 6. A semicircular ring 7 is arranged in the middle position of the edge of the second opening 6, and the diameter of the semicircular ring 7 is slightly smaller than the diameter of the fixing hole 10 on the blade. A fixing hole 10 is arranged in the middle position of the blade, and two limiting holes 9 are arranged on the back of the blade, and the shape of the limiting hole 9 is U-shaped. According to the relative position relationship between the fixing hole 10 and the limiting hole 9 on the blade, two limiting blocks 8 are arranged at the position of the second opening 6 relative to the semicircular ring 7. When installing the blade, align the fixing hole 10 of the blade with the semicircular ring 7, align the limiting hole 9 with the limiting block 8, and then cover the second side panel to complete the installation. After the installation is completed, the second side panel fits with the semicircular ring 7 and the limiting block 8 on the blade body to prevent the blade from slipping out of the gap. The semicircular ring 7 and the limiting block 8 can prevent the blade from moving left and right or up and down, and play a limiting role.

[0039] like Figure 5 As shown, the push button lock 11 in this embodiment is designed as a structure that locks up and down. A latch 13 is connected to the push button lock 11, and a lock buckle 12 is provided on the blade. The latch 13 and the lock buckle 12 can form a mortise and tenon structure. When the push button lock 11 is pushed upward, the latch 13 is inserted into the L-shaped groove formed by the lock buckle 12, and the latch 13 is blocked by the side of the lock buckle 12, so that the second side cover 2 cannot be opened outward. When the push button lock 11 is pushed downward, the latch 13 leaves the L-shaped groove, and the second side cover 2 can be opened outward.

[0040] There is also a blade magazine 20 in the second internal passage 4. A fixed cylinder is arranged in the blade magazine 20 relative to the fixed hole 10 on the blade, so as to facilitate the alignment of the blade when it is put in. When it is necessary to install a blade in the window scraper state or replace the blade, the second side cover 2 can be opened to take out the blade in the blade magazine 20. The number of blades that can be stored in the blade magazine 20 depends on the size of the blade magazine 20.

[0041] This embodiment combines the functions of a utility knife and a scraper, and can be converted between the two. It has a simple structure and is easy to use. The utility knife and the scraper have two different openings, which can also prevent misoperation during use. It also has a hidden knife magazine function, which can store extra blades for easy replacement. The product is compact and easy to carry.

[0042] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A multifunctional utility knife, comprising a blade, characterized in that: The two sides of the blade body are respectively connected to the first side cover and the second side cover, the end of the blade body connected to the first side cover is provided with a first internal channel, the end of the blade body connected to the second side cover is provided with a second internal channel, the end of the first internal channel is provided with a first opening, the end of the second internal channel is provided with a second opening, a slidable blade support assembly is provided in the first internal channel, and the blade support assembly is connected to the brake button.

2. The multifunctional utility knife according to claim 1, characterized in that: The second opening is provided with a semicircular ring and a plurality of limiting blocks, a limiting hole is provided inside the blade, a fixing hole is provided in the middle of the blade, the semicircular ring is embedded in the fixing hole, and the limiting blocks are embedded in the limiting hole.

3. The multifunctional utility knife according to claim 1 or 2, characterized in that: The blade back of the blade installed in the second opening faces inwards, the blade is trapezoidal, and the length of the second opening is equal to the length of the blade back.

4. The multifunctional utility knife according to claim 1, characterized in that: The second side cover is provided with a push button lock, the push button lock is provided with a latch, the blade body is provided with an L-shaped lock buckle at a position relative to the latch, and the latch and the lock buckle form a mortise and tenon structure.

5. The multifunctional utility knife according to claim 2, characterized in that: The blade support assembly is provided with a fixing column, and the fixing column is embedded in the fixing hole.

6. The multifunctional utility knife according to claim 1, characterized in that: The first side cover is provided with a slide groove, and the brake button is embedded in the slide groove.

7. The multifunctional utility knife according to claim 1, characterized in that: The blade locking assembly is connected to the blade, and the blade locking assembly is connected to an unlocking button located on the surface of the first side cover.

8. The multifunctional utility knife according to claim 1, characterized in that: The second internal passage is provided with a blade magazine, and spare blades are stored in the blade magazine.

9. The multifunctional utility knife according to claim 1, 2 or 4, characterized in that: The bottom of the second side cover is hinged to the blade body.

10. The multifunctional utility knife according to claim 6, characterized in that: The brake button drives the blade support assembly to move within the slide slot, and the blade support assembly drives the blade to move. When the brake button moves to the bottom of the slide slot, the blade is entirely located within the first internal channel.

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