Pedicure knife with replaceable blade

Abstract

The utility model relates to a cutter, in particular to a pedicure cutter with a replaceable blade. The cutter comprises a long-strip-shaped and flat cutter rest, and a blade is arranged at the front end of the cutter rest. The device is characterized in that the front end of the knife rest is provided with a flat hole, and a bilateral spring is arranged in the flat hole. The double-side spring is in an omega shape, the two sides of the opening end of the double-side spring are bent inwards, and the closed end of the double-side spring corresponds to the inner side of the flat hole and is fixedly matched with the tool rest. Omega-shaped clamping grooves are formed in the tail ends of the blades, and in the installation state, the clamping grooves in the tail ends of the blades are clamped with the opening ends of the double-side springs. The pedicure knife is simple in structure and high in stability, and the manufacturing, using and maintaining cost can be greatly reduced.

Description

Technical Field

[0001] This utility model relates to knives, specifically a pedicure knife with replaceable blades. Background Technology

[0002] A pedicure knife is a tool used to trim toenails, remove onychomycosis, calluses, and dead skin. It is a commonly used specialized pedicure tool.

[0003] Traditional pedicure knives use a one-piece structure for the blade and handle. While this structure provides sufficient strength and toughness for use, the entire knife must be replaced once the blade chipps or the edge is severely worn, resulting in relatively high manufacturing and usage costs.

[0004] To reduce costs, the industry has developed many replaceable-blade pedicure knives in recent years. These knives, while ensuring sufficient strength and toughness to meet usage requirements, feature a separate blade and handle design. This not only reduces the material cost of the handle but also allows for continued use simply by replacing the blade when the tip chipps or the edge becomes severely worn, eliminating the need to replace the entire knife and significantly reducing operating costs. However, existing replaceable-blade pedicure knives primarily use a snap-fit ​​or snap-fit ​​combined with a spring structure. These structures are not only complex but also prone to wear and loosening after prolonged use, leading to unstable blade mounting and requiring replacement parts, resulting in higher maintenance costs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a pedicure knife with replaceable blades. This pedicure knife has a simple structure, strong stability, and can greatly reduce manufacturing, use and maintenance costs.

[0006] To solve the above problems, the following technical solutions are adopted:

[0007] This utility model discloses a replaceable blade pedicure knife, comprising a long, flat blade holder with a blade at its front end. The key feature is a flat hole at the front end of the blade holder, within which a double-sided spring is installed. The double-sided spring is Ω-shaped, with both open ends bent inwards. The closed ends of the double-sided springs correspond to the inner side of the flat hole and are fixedly engaged with the blade holder. The tail end of the blade has an Ω-shaped groove, which, in the installed state, engages with the open end of the double-sided spring.

[0008] Furthermore, the blade is inclined inward from its middle to its tail end, forming a tapered shape with a gradually decreasing width. The two sides of the flat hole have the same shape and size as the two sides of the middle and rear part of the blade, so that in the installed state, the two sides of the middle and rear part of the blade correspond and abut with the two sides of the flat hole.

[0009] The tool holder includes a tool holder body and a pressure cap. The front end of the tool holder body has a flat groove that is open on both the upper and front sides, and clamping grooves are present on both sides of the opening at the front end of the flat groove. The shape of the tail end of the pressure cap matches the shape of the flat groove on the tool holder body, and clamping ribs are present on both sides of the pressure cap at positions corresponding to the clamping grooves on the tool holder body. In the installed state, the clamping ribs on both sides of the pressure cap are inserted into the corresponding clamping grooves on the tool holder body, and the clamping ribs and clamping grooves are in an interference fit. There is a gap between the bottom surface of the pressure cap and the bottom surface of the flat groove on the tool holder body, thereby forming the flat hole, and the tool holder body corresponding to the bottom surface of the flat groove extends forward and mates with the front end of the pressure cap to cover both sides of the blade.

[0010] Furthermore, the inner end of one side wall of the flat groove of the tool holder body has a through pin hole, and the corresponding position of the tail end of the pressure cap also has a pin hole. In the installed state, the pin hole of the tool holder body is connected to the pin hole of the pressure cap, and is fixed with a pin inside.

[0011] The bottom surface of the cap has a downward-facing concave boss, and there is a straight rib inside the concave boss. There are gaps between the lower edge of the straight rib and the bottom surface of the concave boss, and between the two ends of the straight rib and the two side walls of the concave boss. In the installed state, the closed end of the double-sided spring is inserted into the gap between the straight rib and the concave boss, so that the closed end of the double-sided spring is fixedly engaged with the tool holder.

[0012] In the above scheme, the surface of the tool holder is machined with anti-slip texture.

[0013] The above approach has the following advantages:

[0014] This utility model discloses a replaceable blade pedicure knife with a flat hole at the front end of its blade holder, into which a double-sided spring is installed. The double-sided spring is Ω-shaped, with both open ends bent inwards. The closed ends of the springs correspond to the inner side of the flat hole and are fixedly engaged with the blade holder. The tail end of the blade has an Ω-shaped groove, which engages with the open end of the double-sided spring in the installed state. Therefore, this utility model solves the problem of connecting the blade and the blade holder by using a double-sided spring and an Ω-shaped groove at the tail end of the blade. Blade replacement is also very convenient. Compared with existing technologies using snap-fit ​​or snap-fit ​​combined with spring structures, its structure is simpler and has lower manufacturing and usage costs. Furthermore, if the double-sided springs wear down after long-term use, causing the blade to become unstable, only the double-sided springs need to be replaced, resulting in relatively low maintenance costs. Attached Figure Description

[0015] Figure 1 This is an exploded view of the parts of the replaceable blade pedicure knife of this utility model;

[0016] Figure 2This is an assembly diagram of the replaceable blade pedicure knife of this utility model;

[0017] Figure 3 yes Figure 2 A schematic diagram of the structure of the bottom surface of the medium pressure cover in conjunction with the double-sided springs and blades. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 and Figure 3 As shown, the replaceable blade pedicure knife of this utility model includes a long, flat blade holder with a blade 3 at its front end. The front end of the blade holder has a flat hole, within which a double-sided spring 5 is installed. The double-sided spring 5 is Ω-shaped, with both open ends bent inwards. The closed ends of the double-sided spring 5 correspond to the inner side of the flat hole and are fixedly engaged with the blade holder. The tail end of the blade 3 has an Ω-shaped groove, which, in the installed state, engages with the open end of the double-sided spring 5. The surface of the blade holder is machined with anti-slip texture.

[0020] To improve the stability of the connection between the blade 3 and the tool holder, in this embodiment, the two sides of the blade 3 from its middle part to its tail end are inclined inward, forming a tapered shape with a gradually decreasing width. The two sides of the flat hole have the same shape and size as the two sides of the middle and rear part of the blade 3, so that in the installed state, the two sides of the middle and rear part of the blade 3 correspond and abut with the two sides of the flat hole, thereby restricting the blade 3 from lateral translation or rotation, making the connection between the blade 3 and the tool holder more stable.

[0021] For ease of processing and installation, the tool holder in this embodiment includes a tool holder body 1 and a pressure cap 2. The front end of the tool holder body 1 has a flat groove 11 that is open on both the upper and front sides. Each side wall of the opening at the front end of the flat groove 11 has a clamping groove 12. The tail end of the pressure cap 2 is shaped to match the shape of the flat groove 11 on the tool holder body 1, and both sides of the pressure cap 2 have clamping ribs 21 corresponding to the clamping grooves 12 on the tool holder body 1. In the installed state, the clamping ribs 21 on both sides of the pressure cap 2 are inserted into the corresponding clamping grooves 12 on the tool holder body 1, and the clamping ribs 21 and the clamping grooves 12 are in an interference fit. There is a gap between the bottom surface of the pressure cap 2 and the bottom surface of the flat groove 11 of the tool holder body 1, thus forming the flat hole. The tool holder body 1 corresponding to the bottom surface of the flat groove 11 extends forward and cooperates with the front end of the pressure cap 2 to cover both sides of the blade 3.

[0022] To improve the stability of the connection between the pressure cap 2 and the tool holder body 1, in this embodiment, a through pin hole is provided at the inner end of one side wall of the flat groove 11 of the tool holder body 1. A corresponding pin hole is also provided at the tail end of the pressure cap 2. In the installed state, the pin hole of the tool holder body 1 communicates with the pin hole of the pressure cap 2, and is fixed inside by a pin 4. By using the engagement of the pin 4 and the pin hole, the pressure cap 2 is fixed to the tool holder body 1, preventing it from sliding back and forth and ensuring a more stable connection.

[0023] like Figure 3 As shown, the bottom surface of the end of the pressure cap 2 has a downward concave boss 22. Inside the concave boss 22, there is a straight rib 23. There are gaps between the lower edge of the straight rib 23 and the bottom surface of the concave boss 22, and between the two ends of the straight rib 23 and the two side walls of the concave boss 22. In the installed state, the closed end of the double-sided spring 5 is inserted into the gap between the straight rib 23 and the concave boss 22, so that the closed end of the double-sided spring 5 is fixedly engaged with the tool holder.

[0024] This utility model of a replaceable-blade pedicure knife solves the problem of connecting the blade and the tool holder by utilizing a double-sided spring 5 and an Ω-shaped groove at the tail end of the blade 3 for engagement. Blade replacement is also very convenient. Compared with existing technologies that use a snap-fit ​​or a combination of snap-fit ​​and spring, its structure is simpler and has lower manufacturing and usage costs. Furthermore, if the double-sided spring 5 wears down after long-term use, causing the blade 3 to become unstable, simply remove the pressure cap 2, replace the double-sided spring 5, and reassemble it for use; maintenance costs are also relatively low.

Claims

1. A replaceable blade pedicure cutter comprising a long strip-shaped and flat cutter holder, the front end of the cutter holder having a cutter blade (3); characterized in that The front end of the holder has a flat hole, and a double-sided spring (5) is installed in the flat hole; the double-sided spring (5) is in the shape of Ω, and the two sides of the open end thereof are bent inward, the closed end of the double-sided spring (5) corresponds to the inner side of the flat hole and is fixedly matched with the holder; the tail end of the blade (3) has a Ω-shaped clamping groove, and in the installed state, the clamping groove at the tail end of the blade (3) is clamped with the open end of the double-sided spring (5).

2. The disposable blade pedicure razor of claim 1 wherein The two side edges of the blade (3) from the middle part to the tail end are in the shape of inward inclination, so that the blade (3) forms a taper with gradually decreasing width, and the two side edges of the flat hole are the same in shape and size with the two side edges of the middle and rear parts of the blade (3), so that in the installed state, the two side edges of the middle and rear parts of the blade (3) correspondingly abut against the two side edges of the flat hole.

3. The disposable blade pedicure razor of claim 1 wherein The holder comprises a holder main body (1) and a pressing cover (2); the front end of the holder main body (1) has a flat groove (11) with open upper side and front end, and the two side walls of the front end opening part of the flat groove (11) are provided with clamping grooves (12); the tail end of the pressing cover (2) is adapted in shape to the flat groove (11) of the holder main body (1), and the pressing cover (2) is provided with clamping ribs (21) at the positions corresponding to the clamping grooves (12) of the holder main body (1) on the two sides; in the installed state, the clamping ribs (21) on the two sides of the pressing cover (2) are inserted into the corresponding clamping grooves (12) of the holder main body (1), and the clamping ribs (21) and the clamping grooves (12) are in interference fit; the bottom surface of the pressing cover (2) is spaced apart from the bottom surface of the flat groove (11) of the holder main body (1), so as to form the flat hole, and the bottom surface of the flat groove (11) corresponds to the forward extension of the holder main body (1) and cooperates with the front end of the pressing cover (2) to cover the two surfaces of the blade (3).

4. The disposable blade pedicure razor of claim 3, wherein One side wall of the flat groove (11) of the holder main body (1) has a through pin hole at the inner end, and the tail end of the pressing cover (2) also has a pin hole at the corresponding position; in the installed state, the pin hole of the holder main body (1) is communicated with the pin hole of the pressing cover (2), and a pin (4) is fixed in the pin hole.

5. The disposable blade pedicure razor of claim 3, wherein The tail end of the pressing cover (2) has a downward concave boss (22), and the concave boss (22) has a one-stroke convex rib (23) therein; the bottom surface of the concave boss (22) is spaced apart from the lower edge of the one-stroke convex rib (23), and the two ends of the one-stroke convex rib (23) are spaced apart from the two side walls of the concave boss (22); in the installed state, the closed end of the double-sided spring (5) is clamped into the gap between the one-stroke convex rib (23) and the concave boss (22), so that the closed end of the double-sided spring (5) is fixedly matched with the holder.

6. The replaceable blade foot care device according to any one of claims 1 to 5, wherein The surface of the holder is processed with anti-skid lines.

Images