Knife sharpener

Abstract

The utility model discloses a knife sharpener which comprises a base, a sharpening component and a positioning mechanism, the sharpening component and the positioning mechanism are arranged on the base, and the sharpening component is provided with a sharpening face. The positioning mechanism at least comprises two contact parts which are arranged at intervals along the length direction of the blade part of the cutter; the sharpening surface is positioned between the two contact parts, the blade part of the cutter is in contact with the sharpening surface, one contact part is at least in contact with any side surface of the cutter, and the other contact part is at least in contact with the other opposite side surface of the cutter, so that the cutter is positioned; the contact part is movably matched with the side surface of the cutter; the utility model relates to the technical field of knife sharpeners.

Description

Technical Field

[0001] This utility model relates to the field of knife sharpener technology, and more specifically to a knife sharpener. Background Technology

[0002] Existing sharpening tools have a sharpening surface. The blade contacts the sharpening surface and rubs against it to sharpen or open the blade.

[0003] In order to make the cutting tool make more stable contact with the grinding surface, some sharpening tools with positioning functions have been developed;

[0004] For example, a single-sided positioning sharpener uses a positioning element to contact one side of the tool to support and position it. However, with single-sided positioning, the tool is still more prone to tilting, which can lead to inconsistent contact with the grinding surface and uneven grinding effect.

[0005] A knife sharpener with dual-sided positioning function: Please refer to the announcement number CN 208196373 U for a household knife sharpener that uses two clamping blocks to simultaneously clamp both sides of the knife, making the knife position stable. However, the contact area with the knife sides is large, resulting in greater resistance to knife movement and a poor user experience. Utility Model Content

[0006] To address the shortcomings and defects of existing technologies, a sharpening tool is provided that can position the cutting tool, resulting in a better sharpening effect.

[0007] A knife sharpener, comprising:

[0008] The base, and the grinding components and positioning mechanism mounted on the base,

[0009] The grinding component is provided with a grinding surface;

[0010] The positioning mechanism includes at least two contact portions spaced apart along the length of the cutting edge.

[0011] The polished surface is located between the two contact portions.

[0012] The cutting edge of the tool contacts the grinding surface, with one contact part contacting at least one side of the tool and the other contact part contacting at least the opposite side of the tool, thus positioning the tool.

[0013] The contact portion engages with the side of the cutting tool.

[0014] With the above structure, the knife sharpener of this utility model has the following advantages compared with the prior art:

[0015] When using it, bring the cutting edge of the knife into contact with the grinding surface and pull the knife back and forth to grind the cutting edge.

[0016] The positioning mechanism includes at least two contact portions spaced apart along the length of the cutting edge.

[0017] On the front and rear sides of the grinding surface, the contact parts contact the two sides of the tool respectively, providing support for the tool and positioning it.

[0018] Compared with existing sharpeners with single-sided positioning function, this application provides positioning for both sides of the tool simultaneously, making the tool position more stable, preventing tilting during sharpening, and ensuring good consistency in contact between the blade and the sharpening surface, thereby achieving a consistent and better sharpening effect.

[0019] Compared with existing sharpeners with dual-sided positioning function, these sharpeners typically use a planar fixed block that contacts the side of the tool, resulting in a large contact area, greater resistance to tool movement, and a poor user experience.

[0020] The contact portion of this application, which is spaced out, contacts the side of the tool in a point-contact manner, resulting in less resistance to tool movement, a simpler structure, and a better user experience.

[0021] As an improvement of this utility model, the contact portion includes a first contact portion disposed in front of the grinding surface and a second contact portion disposed behind the grinding surface;

[0022] There are two first contact parts, which are arranged opposite each other on the left and right, forming a first clamping space between the two first contact parts for the tool to enter;

[0023] There are two second contact portions, which are arranged opposite each other on the left and right, forming a second clamping space between the two second contact portions for the tool to enter.

[0024] As an improvement of this utility model, the contact part is a ball, and it can roll along with the movement of the cutting tool.

[0025] As an improvement of this utility model, the positioning mechanism further includes a mounting base, the lower end of which is connected to the base, and the upper end is provided with a mounting groove, the outer side of which is embedded in the mounting groove;

[0026] The mounting groove is provided with an elastic element that abuts against the outer side of the contact portion.

[0027] When the cutting tool presses against the contact area, the contact area can move outward under the elastic action of the elastic element.

[0028] When the tool is removed, the contact part loses the force of the tool and resets under the elastic action of the elastic element.

[0029] As an improvement of this utility model, the elastic element is a long strip-shaped support arm. The lower end of the support arm is connected to the mounting base, and the upper end extends into the mounting groove after being bent inward and stops against the outer end of the contact part.

[0030] As an improvement of this utility model, a limiting protrusion is also provided at the outer end of the mounting groove. After the contact part moves outward to cooperate with the limiting protrusion, the contact part is restricted by the limiting part to the extreme position of outward movement.

[0031] As an improvement of this utility model, the grinding component consists of two coaxially arranged grinding wheels, which are rotatably connected to the base. The inner end faces of the two grinding wheels serve as grinding surfaces, and a tool groove is formed between them.

[0032] As an improvement of this utility model, the inner end face of the grinding wheel is a conical surface;

[0033] The upper end of the center line A of the tool slot is inclined to the right, and the middle position of the center line A intersects with the center line B of the positioned tool.

[0034] As an improvement of this utility model, the base is also provided with a shell, which covers the outside of the grinding component and the positioning mechanism, and the shell is also provided with a through groove that runs vertically through the inside, exposing the grinding surface and the inner side of the contact part.

[0035] As an improvement to this utility model, the base is provided with a handle that can slide left and right.

[0036] When the handle is slid to its extreme left position, the handle body enters between the outer shell and the base, and the handle body is positioned above the polished surface, thus shielding the polished surface.

[0037] When the handle is slid to its limit position to the right, the handle body moves out from between the outer shell and the base, exposing the polished surface. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of this utility model during grinding operations.

[0039] Figure 2 This is a schematic diagram of the structure of this utility model after the outer shell is hidden.

[0040] Figure 3 This is the utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0041] Figure 4 This is a schematic diagram of the grinding component and positioning mechanism of this utility model.

[0042] Figure 5This is a schematic diagram of the assembled outer shell of this utility model, with the handle slid to the left to its limit position.

[0043] The figure shows: 1. Base; 2. Grinding component; 2.1. Grinding surface; 3. Contact part; 3.1. First contact part; 3.2. Second contact part; 4. Mounting seat; 4.1. Mounting groove; 4.11. Limiting protrusion; 5. Elastic element; 6. Support arm; 7. Housing; 7.1. Through groove; 8. Handle; 9. Cutting tool. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0045] Please see Figure 1-5 As shown,

[0046] A knife sharpener, comprising:

[0047] Base 1, and the grinding component 2 and positioning mechanism disposed on base 1,

[0048] The grinding component 2 is provided with a grinding surface 2.1;

[0049] The positioning mechanism includes at least two contact portions 3 spaced apart along the length of the cutting edge 9 of the tool;

[0050] The polished surface 2.1 is located between the two contact portions 3.

[0051] The cutting edge of the tool 9 contacts the grinding surface 2.1, and one of the contact parts 3 contacts at least one side of the tool 9, and the other contact part 3 contacts at least the opposite side of the tool 9, which plays a positioning role for the tool 9.

[0052] The contact part 3 is in a movable fit with the side of the cutting tool 9.

[0053] When using, bring the cutting edge of the tool 9 into contact with the grinding surface 2.1, and pull the tool 9 back and forth to grind the cutting edge.

[0054] The positioning mechanism includes at least two contact portions 3 spaced apart along the length of the cutting edge 9 of the tool.

[0055] On the front and rear sides of the grinding surface 2.1, the contact part 3 contacts the two sides of the tool 9 respectively, providing support for the tool 9 and positioning the tool 9.

[0056] Compared with existing sharpeners with single-sided positioning function, this application provides positioning for both sides of the tool 9, making the tool 9 more stable and preventing tilting during sharpening. The contact consistency between the blade and the sharpening surface 2.1 is excellent, resulting in a consistent and better sharpening effect.

[0057] As an improvement of this utility model, the contact part 3 includes a first contact part 3.1 disposed in front of the grinding surface 2.1 and a second contact part 3.2 disposed behind the grinding surface 2.1; there are two first contact parts 3.1, which are arranged opposite each other on the left and right, forming a first clamping space for the tool 9 to enter between the two first contact parts 3.1; there are two second contact parts 3.2, which are arranged opposite each other on the left and right, forming a second clamping space for the tool 9 to enter between the two second contact parts 3.2.

[0058] Pairs of contact parts 3 are provided on the front and rear sides of the grinding surface 2.1, forming specific clamping spaces. During the grinding operation, the tool 9 is clamped simultaneously, so that the tool 9 on both the front and rear sides of the grinding surface 2.1 is stably supported during the grinding process. Compared with the traditional positioning method, the stability of the tool 9 during grinding is greatly improved, the positional deviation of the tool 9 during the back and forth grinding process is effectively improved, the grinding effect is significantly improved, and the problem of inaccurate positioning that has existed in the existing technology for a long time is solved.

[0059] As an improvement of this utility model, the contact part 3 is a ball, and it can roll along with the movement of the cutter 9.

[0060] The contact part 3 of this application has a spherical structure, which has a very small contact area with the side of the tool 9, greatly reducing the moving resistance of the tool 9 and providing a better user experience.

[0061] In addition, the contact part 3 of the spherical structure can roll along with the movement of the tool 9, further reducing the moving resistance of the tool 9 and making the movement of the tool 9 smoother during the grinding process.

[0062] Preferably, the contact part 3 is made of an elastic material such as rubber, which can adapt to the movement trajectory of the tool 9 and further improve the clamping effect of the tool 9.

[0063] As an improvement of this utility model, the positioning mechanism also includes a mounting base 4. The lower end of the mounting base 4 is connected to the base 1, and the upper end is provided with a mounting groove 4.1. The outer side of the contact part 3 is embedded in the mounting groove 4.1. An elastic member 5 is provided in the mounting groove 4.1 to abut against the outer side of the contact part 3. When the cutter 9 presses the contact part 3, the contact part 3 can move outward under the elastic action of the elastic member 5. When the cutter 9 moves out, the contact part 3 loses the force of the cutter 9, and the contact part 3 resets under the elastic action of the elastic member 5.

[0064] The contact part 3 is set on the mounting base 4. Utilizing the elasticity of the elastic element 5, the tool 9 can move inward or outward. It can adaptively adjust according to the different thicknesses of the tool 9, which greatly improves the versatility of the sharpener for different tools 9. It solves the limitation problem that the positioning mechanism of the traditional sharpener can only be used for tools 9 of a specific thickness. The ingenious elastic structure design expands the application range of the sharpener.

[0065] As an improvement of this utility model, the elastic element 5 is a long strip-shaped support arm 6. The lower end of the support arm 6 is connected to the mounting base 4, and the upper end extends into the mounting groove 4.1 after being bent inward and stops against the outer end of the contact part 3.

[0066] The use of a long, bent support arm 6 as an elastic element 5 optimizes the structure and cost while meeting the elasticity requirements of the contact part 3.

[0067] As an improvement of this utility model, a limiting protrusion 4.11 is also provided at the outer end of the mounting groove 4.1. After the contact part 3 moves outward to cooperate with the limiting protrusion 4.11, the contact part 3 is restricted by the limiting part to the extreme position of outward movement. The limiting protrusion 4.11 at the outer end of the mounting groove 4.1 limits the outward movement trajectory of the contact part 3 to a limit position, effectively preventing the contact part 3 from dislodging due to excessive displacement and the elastic element 5 from being damaged, thus ensuring the stability and reliability of the structure.

[0068] As an improvement of this utility model, the grinding component 2 consists of two coaxially arranged grinding wheels, which are rotatably connected to the base 1. The inner end faces of the two grinding wheels serve as grinding surfaces 2.1, and a tool groove is formed between them. By using two coaxially rotating grinding wheels as the grinding component 2, and utilizing their inner end faces as grinding surfaces 2.1 to contact the two sides of the cutting edge respectively,...

[0069] When the tool 9 is pulled back and forth, the grinding wheel rotates, and the grinding surface 2.1 continuously contacts the cutting edge, which can grind the cutting edge of the tool 9 more quickly and evenly, thus improving grinding efficiency and quality.

[0070] As an improvement of this utility model, the inner end face of the grinding wheel is a conical surface; the upper end of the center line A of the tool groove is inclined to the right, and the middle position of the center line A intersects with the center line B of the positioned tool 9.

[0071] The inner end face of the tapered grinding wheel can adaptively adjust the contact area according to the different angles of the cutting edge of the tool 9, and can maintain effective contact with the cutting edge of various tools 9. While ensuring the uniformity and effect of grinding, it can meet the grinding needs of various tools 9.

[0072] As an improvement of this utility model, the base 1 is also provided with a shell 7, which covers the outside of the grinding component and the positioning mechanism. The shell 7 is also provided with a through groove 7.1 that runs vertically through the inside, which exposes the grinding surface 2.1 and the inner side of the contact part 3.

[0073] The outer casing 7 effectively prevents chips from flying during the sharpening process, while also protecting the internal sharpening components and positioning mechanism.

[0074] The design of the through groove 7.1 not only ensures that the tool 9 can normally contact the grinding surface 2.1 and the contact part 3 for grinding, but also achieves a protective function, which is an innovative optimization of the overall structural design of the sharpener.

[0075] As an improvement of this utility model, the base 1 is provided with a handle 8 that can slide left and right. When the handle 8 slides to the left to its limit position, the main body of the handle 8 enters between the outer shell 7 and the base 1, and the main body of the handle 8 is located above the grinding surface 2.1, covering the grinding surface 2.1. When the handle 8 slides to the right to its limit position, the main body of the handle 8 moves out from between the outer shell 7 and the base 1, and exposes the grinding surface 2.1.

[0076] When not in use, the handle 8 can be slid between the housing 7 and the base 1 for storage, thus protecting the grinding surface 2.1 from damage.

[0077] When in use, slide the handle 8 between the outer shell 7 and the base 1 to expose the grinding surface 2.1, clamping space, etc., and then insert the tool 9 for grinding.

[0078] The handle 8 allows the user to hold it during sharpening operations, making the overall structure more stable and resulting in better sharpening effects.

[0079] In addition, its structure is more compact, making it easier to store.

[0080] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A knife sharpener, characterized in that, include: The base (1), and the grinding component (2) and positioning mechanism disposed on the base (1), The grinding component (2) is provided with a grinding surface (2.1); The positioning mechanism includes at least two contact portions (3) spaced apart along the length of the cutting edge of the tool (9); The polished surface (2.1) is located between the two contact portions (3). The cutting edge of the tool (9) contacts the grinding surface (2.1), and one of the contact parts (3) contacts at least one side of the tool (9), and the other contact part (3) contacts at least the opposite side of the tool (9), which plays a positioning role for the tool (9). The contact part (3) is in active engagement with the side of the cutting tool (9).

2. The knife sharpener according to claim 1, characterized in that: The contact portion (3) includes a first contact portion (3.1) disposed in front of the grinding surface (2.1) and a second contact portion (3.2) disposed behind the grinding surface (2.1). There are two first contact parts (3.1), which are arranged opposite each other on the left and right, forming a first clamping space between the two first contact parts (3.1) for the tool (9) to enter; There are two second contact portions (3.2), which are arranged opposite each other on the left and right, forming a second clamping space between the two second contact portions (3.2) for the tool (9) to enter.

3. The knife sharpener according to claim 1, characterized in that: The contact part (3) is a sphere and can roll along with the movement of the cutter (9).

4. A knife sharpener according to claim 1, characterized in that: The positioning mechanism also includes a mounting base (4), the lower end of which is connected to the base (1), and the upper end is provided with a mounting groove (4.1), the outer side of which is embedded in the mounting groove (4.1); The mounting groove (4.1) is provided with an elastic element (5) that abuts against the outside of the contact part (3). When the cutting tool (9) presses against the contact part (3), the contact part (3) can move outward under the elastic action of the elastic element (5). When the cutting tool (9) is removed, the contact part (3) loses the force of the cutting tool (9) and the contact part (3) is reset under the elastic action of the elastic element (5).

5. A knife sharpener according to claim 4, characterized in that: The elastic element (5) is a long strip-shaped support arm (6). The lower end of the support arm (6) is connected to the mounting base (4), and the upper end extends into the mounting groove (4.1) after being bent inward and stops against the outer end of the contact part (3).

6. A knife sharpener according to claim 4, characterized in that: The outer end of the mounting groove (4.1) is also provided with a limiting protrusion (4.11). After the contact part (3) moves outward to cooperate with the limiting protrusion (4.11), the contact part (3) is restricted by the limiting part to the extreme position of outward movement.

7. A knife sharpener according to claim 1, characterized in that: The grinding component (2) consists of two coaxially arranged grinding wheels, which are rotatably connected to the base (1). The inner end faces of the two grinding wheels serve as grinding surfaces (2.1), and a tool groove is formed between them.

8. A knife sharpener according to claim 7, characterized in that: The inner end face of the grinding wheel is a conical surface; The upper end of the center line A of the tool slot is inclined to the right, and the middle position of the center line A intersects with the center line B of the positioned tool (9).

9. A knife sharpener according to claim 1, characterized in that: The base (1) is also provided with a shell (7), which covers the outside of the grinding component and the positioning mechanism. The shell (7) is also provided with a through groove (7.1) that runs vertically through the inside, which exposes the grinding surface (2.1) and the inner side of the contact part (3).

10. A knife sharpener according to claim 9, characterized in that: The base (1) is provided with a handle (8) that can slide left and right. When the handle (8) is slid to the left to its limit position, the main body of the handle (8) enters between the outer shell (7) and the base (1), and the main body of the handle (8) is located above the grinding surface (2.1), thus covering the grinding surface (2.1); When the handle (8) is slid to the right to its limit position, the main body of the handle (8) moves out from between the outer shell (7) and the base (1) and exposes the polished surface (2.1).

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