Knife sharpener

Abstract

The utility model discloses a knife sharpener for a knife, and relates to the technical field of household appliances. The adjusting mechanism comprises a bottom shell and a top cover, the adjusting mechanism comprises a mounting block, an empty groove is formed in the mounting block, a movable block is arranged in the empty groove, a movable rod is arranged on one side of the movable block, and a rotating block is rotationally arranged at the other end of the movable rod. When the cutter is ground in the cutter grinding groove in a sliding mode, the contact face of the rotating block and the cutter acts, due to the spherical structure and the material characteristic of the rotating block, the rotating block can roll smoothly instead of generating sliding friction with the cutter, the physical principle that the resistance of rolling friction is smaller than that of the sliding friction is ingeniously utilized in the design, and meanwhile the cutter grinding effect is greatly improved. The original sliding friction between the cutter and the inner wall of the cutter sharpening groove is changed into rolling friction between the cutter and the rotating block, so that the resistance of the cutter in the sliding process is obviously reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a knife sharpener. Background Art

[0002] An electric knife sharpener is a device that uses electricity to drive a motor to rotate and achieve knife sharpening. It usually has a small motor built in, and can be connected to the mains through a power adapter, or can be used in a car through a car power adapter. A circular sharpening material is installed on the shaft of the electric knife sharpener, generally called a sharpening head. The materials used for the sharpening head can include ordinary grinding stones or alloy sheets. Higher-end products will use electroplated diamonds and special ceramics.

[0003] During the operation of an existing knife sharpener, it is usually necessary to insert the knife into the sharpening groove and grind the knife edge by pulling it back and forth with the help of a sharpening wheel. However, this traditional grinding method is often accompanied by a large friction resistance, which requires the operator to exert a large force when pulling the knife, which not only increases the physical burden of using the knife sharpener, but also may reduce work efficiency due to inconvenient operation, thereby affecting the overall convenience of use of the knife sharpener. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a knife sharpener to solve the technical problem that the traditional grinding method is accompanied by large friction resistance and reduces work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a knife sharpener, comprising a bottom shell and a top cover, a plurality of knife sharpening grooves are provided on the top of the top cover, an adjustment mechanism is provided on one side of the knife sharpening grooves, the adjustment mechanism comprises a mounting block, an empty groove is provided inside the mounting block, a movable block is provided inside the empty groove, a movable rod is provided on one side of the movable block, and a rotating block is rotatably provided on the other end of the movable rod.

[0006] By adopting the above technical solution, when the tool is sliding and grinding inside the grinding groove, it will originally directly generate sliding friction with the inner wall of the grinding groove. This sliding friction usually produces greater resistance, requiring the user to apply more force to push the tool, which not only increases the difficulty of sharpening, but also may affect the uniformity and efficiency of grinding. At the same time, a rotating block is introduced. During the sliding process of the tool, the rotating block contacts the tool and converts its original sliding friction into rolling friction. Since the resistance of rolling friction is much smaller than that of sliding friction, this transformation significantly reduces the resistance of the tool when it slides inside the grinding groove.

[0007] Furthermore, the rotating block is in a spherical structure, the rotating block is made of stainless steel, and the mounting block is fixedly connected to the inner wall of the top cover.

[0008] By adopting the above technical solution, this structure ensures that when the tool slides in the grinding groove, the rotating block can smoothly adapt to the movement trajectory of the tool, effectively converting the sliding friction into rolling friction, which not only reduces the sliding resistance, but also makes the sliding of the tool smoother, which is conducive to improving the quality and efficiency of grinding.

[0009] Furthermore, the movable block is slidably connected to the mounting block via an empty slot, and the movable block has a rectangular structure.

[0010] By adopting the above technical solution, it is ensured that the movable block can move stably laterally along a predetermined path when adjusted. This connection method not only provides the necessary guiding function, but also ensures the accuracy and smoothness of the movement of the movable block, thereby effectively transmitting the action of the adjustment mechanism to the tool and realizing precise adjustment of the tool placement angle.

[0011] Furthermore, a pressing block is arranged on the other side of the movable block, the pressing block abuts against the movable block, and the abutting surfaces are both inclined structures.

[0012] By adopting the above technical solution, the abutting surfaces between the two are all inclined structures. This design allows the pressure block to be effectively decomposed into lateral components when it is subjected to vertical downward pressure. This lateral component directly acts on the movable block, pushing it to slide laterally along the empty slot.

[0013] Furthermore, the top of the pressure block is rotatably connected to a screw rod via a thrust bearing, and the screw rod is threadedly connected to the top cover.

[0014] By adopting the above technical solution, the screw is allowed to maintain a stable vertical position during rotation without deviation or shaking. This connection method ensures that the rotational movement of the screw can be accurately converted into the vertical movement of the pressing block, thereby achieving effective pressing of the movable block.

[0015] Furthermore, a pressure spring is arranged on the outer side of the movable rod, and two ends of the pressure spring are respectively in contact with the inner walls of the movable block and the top cover.

[0016] By adopting the above technical solution, the movable rod and the rotating block connected thereto can be maintained in a default position when not subjected to external force, and the two ends of the pressure spring are respectively abutted against the inner walls of the movable block and the top cover. This abutment method ensures that the elastic force of the spring can effectively act on the movable block, providing an elastic force to reset it.

[0017] Furthermore, a plurality of negative pressure suction cups are disposed at the bottom of the bottom shell, and the plurality of negative pressure suction cups are arranged in a rectangular array.

[0018] By adopting the above technical solution, such a design enables the knife sharpener to form multiple independent adsorption points with the desktop when placed, and each negative pressure suction cup can generate a certain adsorption force. By superimposing these adsorption forces, it can be ensured that the knife sharpener is firmly adsorbed on the desktop and will not move due to vibration or external force during the sharpening process.

[0019] Furthermore, a power assembly is disposed inside the bottom shell, the power assembly includes a stator, and a rotating rod is disposed inside the stator.

[0020] By adopting the above technical solution, the power assembly is the core driving component of the knife sharpener, and the stator, as a part of the power assembly, plays a vital role. The rotating rod arranged inside the stator is a key element of power transmission, which can generate rotational motion after power is turned on. At the same time, the rotating rod, driven by the stator, can convert electrical energy into mechanical energy, thereby driving the sharpening wheel connected thereto to rotate at high speed.

[0021] Furthermore, a cooling fan and a first grinding wheel are arranged on one side of the rotating rod, and a second grinding wheel and a third grinding wheel are arranged on the other side of the rotating rod.

[0022] By adopting the above technical solution, such a design enables the rotating rod to drive the first grinding wheel to perform the grinding operation while also driving the cooling fan to rotate. The rotation of the cooling fan can effectively dissipate the heat of the power component to prevent it from overheating due to long-term work, thereby ensuring the stability and service life of the power component.

[0023] Furthermore, a scissor groove is provided on one side of the top cover, and the scissor groove is opposite to the third sharpening wheel.

[0024] By adopting the above technical solution, the user can not only sharpen ordinary knives but also conveniently sharpen the blades of scissors when using the knife sharpener. The position of the scissors groove is opposite to the third sharpening wheel, which ensures that when the scissors are sharpened, the blade of the scissors can be in close contact with the third sharpening wheel, thereby obtaining an ideal grinding effect.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model uses a rotating block. When the tool is slidingly polished inside the grinding groove, the contact surface of the rotating block and the tool is in action. Due to the spherical structure and material characteristics of the rotating block, it can roll smoothly instead of generating sliding friction with the tool. This design cleverly utilizes the physical principle that rolling friction is smaller than sliding friction resistance. At the same time, this transformation from the original sliding friction between the tool and the inner wall of the grinding groove to the rolling friction between the tool and the rotating block significantly reduces the resistance of the tool during the sliding process, which not only makes the grinding operation smoother, but also reduces the heat and wear generated by friction, thereby effectively improving the efficiency of grinding.

[0027] 2. The utility model provides an adjustment mechanism. When performing a knife sharpening operation, the position of the rotating block can be moved as needed. This design allows the user to flexibly adjust the placement angle of the knife according to different knives and grinding requirements. By adjusting the position of the rotating block, the blade of the knife can form different contact angles with the grinding wheel, thereby achieving precise grinding of blades at different angles. At the same time, using the grinding wheel to grind blades at different angles can not only improve the sharpness and service life of the knife, but also adapt to different grinding environments and requirements. Whether in a home kitchen or a professional knife sharpening place, the ideal grinding effect can be obtained by adjusting the position of the rotating block. This design not only improves the environmental applicability of knife grinding, but also enables the knife sharpener to perform excellently in different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the power assembly of the utility model;

[0030] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0031] Figure 4 It is a three-dimensional and cross-sectional structural schematic diagram of the adjustment mechanism of the utility model.

[0032] In the figure: 1. bottom shell; 2. top cover; 3. grinding groove; 4. scissors groove; 5. power assembly; 501. stator; 502. rotating rod; 503. first grinding wheel; 504. cooling fan; 505. second grinding wheel; 506. third grinding wheel; 6. adjustment mechanism; 601. mounting block; 602. empty slot; 603. movable block; 604. movable rod; 605. rotating block; 606. pressing block; 607. screw; 608. thrust bearing; 609. pressure spring; 7. negative pressure suction cup. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0034] The following describes an embodiment of the utility model based on its overall structure.

[0035] Embodiment 1:

[0036] A knife sharpener, such as Figure 1-Figure 4 As shown, it includes a bottom shell 1 and a top cover 2, a plurality of knife sharpening grooves 3 are provided on the top of the top cover 2, an adjustment mechanism 6 is provided on one side of the knife sharpening groove 3, the adjustment mechanism 6 includes a mounting block 601, an empty groove 602 is provided inside the mounting block 601, a movable block 603 is provided inside the empty groove 602, a movable rod 604 is provided on one side of the movable block 603, and a rotating block 605 is rotatably provided on the other end of the movable rod 604. When the knife is slid and sharpened inside the knife sharpening groove 3, it will directly generate sliding friction with the inner wall of the knife sharpening groove 3. This sliding friction usually generates greater resistance, requiring the user to apply more force to push the knife, which not only increases the difficulty of sharpening the knife, but also increases the difficulty of sharpening the knife. , which may also affect the uniformity and efficiency of grinding. At the same time, the key element of the rotating block 605 is introduced. During the sliding process of the tool, the rotating block 605 contacts the tool and converts its original sliding friction into rolling friction. Since the resistance of rolling friction is much smaller than that of sliding friction, this conversion significantly reduces the resistance of the tool when it slides inside the grinding groove 3. This not only allows the user to slide the tool more easily, but also effectively improves the efficiency of grinding, because less force is consumed in overcoming friction resistance, and more force can be directly used for grinding the tool. In addition, rolling friction also helps to reduce the wear between the tool and the sharpener, extending their service life.

[0037] See also Figure 4 The rotating block 605 is spherical in structure and is made of stainless steel. The mounting block 601 is fixedly connected to the inner wall of the top cover 2. This structure ensures that when the tool slides in the sharpening groove 3, the rotating block 605 can smoothly adapt to the movement trajectory of the tool and effectively convert the sliding friction into rolling friction, which not only reduces the sliding resistance, but also makes the sliding of the tool smoother, which is beneficial to improving the quality and efficiency of sharpening. At the same time, the rotating block 605 is made of stainless steel, which has excellent wear resistance and corrosion resistance. Since metal debris or moisture may be generated during the sharpening process, the stainless steel material can ensure that the rotating block 605 is not easily damaged during long-term use and maintains a good working condition.

[0038] See also Figure 4The movable block 603 is slidably connected to the mounting block 601 through the empty slot 602. The movable block 603 has a rectangular structure, which ensures that the movable block 603 can move stably laterally along a predetermined path when adjusted. This connection method not only provides the necessary guiding effect, but also ensures the accuracy and smoothness of the movement of the movable block 603, thereby effectively transmitting the action of the adjustment mechanism 6 to the tool, and realizing precise adjustment of the tool placement angle. At the same time, the rectangular structure of the movable block 603 helps to enhance its structural rigidity and stability. The rectangular structure enables the movable block 603 to maintain a stable shape when subjected to the inclined pressure from the pressure block 606, and is not easily deformed or twisted.

[0039] Embodiment 2:

[0040] See also Figure 3 , Figure 4 A pressing block 606 is provided on the other side of the movable block 603. The pressing block 606 is in contact with the movable block 603, and the contact surfaces are both inclined structures. The contact surfaces between the two are both inclined structures. Such a design enables the pressing block 606 to effectively decompose the force into a lateral component when it is subjected to a vertical downward pressure. The lateral component directly acts on the movable block 603, pushing it to slide laterally along the empty groove 602. At the same time, since the contact surface is an inclined structure, when the movable block 603 or the pressing block 606 is subjected to an external force, a self-locking effect will be generated between them. This self-locking effect can prevent the movable block 603 from sliding by itself when not subjected to an external force, thereby ensuring the stability and reliability of the adjustment mechanism 6.

[0041] See also Figure 3 , Figure 4 The top of the pressure block 606 is rotatably connected to a screw rod 607 through a thrust bearing 608. The screw rod 607 is threadedly connected to the top cover 2, allowing the screw rod 607 to maintain a stable vertical position during rotation without offset or shaking. This connection method ensures that the rotational movement of the screw rod 607 can be accurately converted into the vertical movement of the pressure block 606, thereby achieving effective pressure on the movable block 603. At the same time, the threaded connection method of the screw rod 607 and the top cover 2 not only provides a strong connection force, so that the screw rod 607 can be firmly fixed on the top cover 2, but also converts the rotational movement of the screw rod 607 into linear movement in the vertical direction through the rotation of the thread. This conversion effect allows the user to easily adjust the height of the pressure block 606 by rotating the screw rod 607, thereby controlling the lateral position of the movable block 603, and achieving flexible adjustment of the tool placement angle.

[0042] See also Figure 3 , Figure 4A pressure spring 609 is arranged on the outer side of the movable rod 604, and the two ends of the pressure spring 609 are respectively abutted against the inner walls of the movable block 603 and the top cover 2, so that the movable rod 604 and the rotating block 605 connected thereto can be maintained in a default position when not subjected to external force. The two ends of the pressure spring 609 are respectively abutted against the inner walls of the movable block 603 and the top cover 2. This abutment method ensures that the elastic force of the spring can effectively act on the movable block 603, providing an elastic force to reset it. At the same time, when the components of the adjusting mechanism 6 are adjusted by external force, such as when the user rotates the screw 607 to move the pressing block 606 downward, the movable block 603 will overcome the elastic force of the pressure spring 609 and slide laterally. In this process, the pressure spring 609 plays a role of buffering and energy storage. It can absorb part of the external force impact and protect the adjusting mechanism from damage.

[0043] See also Figure 1 , Figure 2 A plurality of negative pressure suction cups 7 are arranged at the bottom of the bottom shell 1, and the plurality of negative pressure suction cups 7 are arranged in a rectangular array. Such a design enables the knife sharpener to form a plurality of independent adsorption points with the desktop when placed, and each negative pressure suction cup 7 can generate a certain adsorption force. By superimposing these adsorption forces, it can be ensured that the knife sharpener is firmly adsorbed on the desktop and will not move due to vibration or external force during the sharpening process. At the same time, the arrangement of the negative pressure suction cups 7 in a rectangular array is also conducive to improving the uniformity of force on the desktop, because the rectangular array arrangement can ensure that the distance between each negative pressure suction cup 7 is equal, so that the adsorption force on the desktop is more evenly distributed, avoiding the problem of tilting or sliding of the knife sharpener due to uneven force.

[0044] See also Figure 2 , Figure 3 A power assembly 5 is arranged inside the bottom shell 1, and the power assembly 5 includes a stator 501. A rotating rod 502 is arranged inside the stator 501. The power assembly 5 is the core driving component of the knife sharpener, and the stator 501, as a part of the power assembly, plays a vital role. The rotating rod 502 arranged inside the stator 501 is a key element of power transmission, which can generate rotational motion after power is turned on. At the same time, the rotating rod 502, driven by the stator 501, can convert electrical energy into mechanical energy, thereby driving the connected sharpening wheel to rotate at high speed. In addition, the cooperation between the stator 501 and the rotating rod 502 also has good sealing and durability, which effectively prevents external impurities such as dust and moisture from entering the power assembly, thereby extending the service life of the knife sharpener.

[0045] See also Figure 2 , Figure 3A cooling fan 504 and a first grinding wheel 503 are provided on one side of the rotating rod 502, and a second grinding wheel 505 and a third grinding wheel 506 are provided on the other side of the rotating rod 502. This design allows the rotating rod to drive the cooling fan 504 to rotate while driving the first grinding wheel 503 to perform a grinding operation. The rotation of the cooling fan 504 can effectively dissipate the heat of the power component 5 to prevent it from overheating due to long-term work, thereby ensuring the stability and service life of the power component. At the same time, a second grinding wheel 505 and a third grinding wheel 506 are provided on the other side of the rotating rod 502, which means that the rotating rod can drive multiple grinding wheels to work at the same time. This design not only improves the grinding efficiency, but also allows users to select different grinding wheels for grinding operations according to their needs, thereby meeting different sharpening needs.

[0046] See also Figure 1 , Figure 2 , Figure 3 A scissors groove 4 is provided on one side of the top cover 2, and the scissors groove 4 is opposite to the third grinding wheel 506, so that the user can not only grind ordinary knives but also conveniently grind the blades of scissors when using the knife sharpener. The position of the scissors groove 4 is opposite to the third grinding wheel 506, ensuring that when the scissors are ground, the blades of the scissors can be in close contact with the third grinding wheel 506, thereby obtaining an ideal grinding effect. At the same time, since the scissors groove 4 is specially designed for scissors, its shape and size can match the blades of the scissors, which helps to improve the accuracy and efficiency of grinding.

[0047] The implementation principle of the utility model is as follows: when the knife needs to be sharpened, the knife sharpener is firstly adsorbed on the desktop by using the negative pressure suction cup 7, and the knife sharpener is connected to the external power supply, so that the rotating rod 502 is rotated, and then the knife is placed inside the knife sharpening groove 3, and one side of the knife is sharpened by using the rotating first sharpening wheel 503 or the second sharpening wheel 505. At the same time, the knife is repeatedly pulled to slide inside the knife sharpening groove 3, which is conducive to making the knife sharpened more fully. In the process of sliding the knife, the contact between the rotating block 605 and the knife is used, which is conducive to changing the original sliding friction between the knife and the inner wall of the knife sharpening groove 3 into rolling friction between the knife and the rotating block 605, which is conducive to reducing the sliding resistance of the knife inside the knife sharpening groove 3 and improving the sharpening efficiency.

[0048] First, rotate the screw 607 to make the screw 607 and the top cover 2 threadedly connected. At the same time, the thrust bearing 608 is rotated to apply downward pressure to the pressure block 606. The inclined pressure force of the pressure block 606 on the movable block 603 causes the movable block 603 to overcome the elastic force of the pressure spring 609 and move laterally, so that the movable rod 604 on one side and the rotating block 605 are adjusted in position. When the knife is sharpened, the movement of the rotating block 605 is beneficial to adjust the placement angle of the tool, and the sharpening wheel can be used to sharpen the blades of different angles, thereby improving the environmental applicability of tool grinding.

[0049] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0050] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A knife sharpener, characterized in that: The invention comprises a bottom shell (1) and a top cover (2), wherein a plurality of knife sharpening grooves (3) are provided on the top of the top cover (2), an adjustment mechanism (6) is provided on one side of the knife sharpening grooves (3), and the adjustment mechanism (6) comprises a mounting block (601), an empty groove (602) is provided inside the mounting block (601), a movable block (603) is provided inside the empty groove (602), a movable rod (604) is provided on one side of the movable block (603), and a rotating block (605) is rotatably provided on the other end of the movable rod (604).

2. The knife sharpener according to claim 1, characterized in that: The rotating block (605) is in a spherical structure and is made of stainless steel. The mounting block (601) is fixedly connected to the inner wall of the top cover (2).

3. The knife sharpener according to claim 1, characterized in that: The movable block (603) is slidably connected to the mounting block (601) via the empty slot (602), and the movable block (603) is in a rectangular structure.

4. The knife sharpener according to claim 1, characterized in that: A pressing block (606) is provided on the other side of the movable block (603), and the pressing block (606) is in contact with the movable block (603), and the contact surfaces are both inclined structures.

5. The knife sharpener according to claim 4, characterized in that: The top of the pressing block (606) is rotatably connected to a screw rod (607) via a thrust bearing (608), and the screw rod (607) is threadedly connected to the top cover (2).

6. The knife sharpener according to claim 1, characterized in that: A pressure spring (609) is arranged on the outer side of the movable rod (604), and two ends of the pressure spring (609) are respectively in contact with the inner wall of the movable block (603) and the top cover (2).

7. The knife sharpener according to claim 1, characterized in that: A plurality of negative pressure suction cups (7) are arranged at the bottom of the bottom shell (1), and the plurality of negative pressure suction cups (7) are arranged in a rectangular array.

8. The knife sharpener according to claim 1, characterized in that: A power assembly (5) is arranged inside the bottom shell (1), and the power assembly (5) comprises a stator (501), and a rotating rod (502) is arranged inside the stator (501).

9. The knife sharpener according to claim 8, characterized in that: A cooling fan (504) and a first grinding wheel (503) are arranged on one side of the rotating rod (502), and a second grinding wheel (505) and a third grinding wheel (506) are arranged on the other side of the rotating rod (502).

10. The knife sharpener according to claim 9, characterized in that: A scissor groove (4) is provided on one side of the top cover (2), and the scissor groove (4) is opposite to the third sharpening wheel (506).

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