A cartridge structure of a replaceable insert blade and a hair clipper

Abstract

The utility model relates to hair clipper technical field discloses a kind of replaceable insert blade's cutter head structure and hair clipper, replaceable insert blade's cutter head structure includes fixed knife, moving knife and insert blade, insert blade is detachably arranged in the side of fixed knife close to moving knife, moving knife is movably contacted on insert blade, fixed knife is provided with fixed knife tooth, insert blade is provided with corresponding insert blade tooth with fixed knife tooth, first hot melt adhesive is arranged between insert blade and fixed knife, insert blade and fixed knife are fixed by first hot melt adhesive bonding.The utility model structure is simple, and production cost is low;Insert blade and fixed knife are fixed by first hot melt adhesive bonding, and it is simple to operate, and it is fixed firmly;First hot melt adhesive can be melted after heating, and insert blade can be replaced from fixed knife, and maintenance cost is low, and the trimming effect of hair clipper is guaranteed after insert blade replacement.

Description

Technical Field

[0001] This utility model relates to the field of hair trimmer technology, and more specifically, to a replaceable blade head structure and a hair trimmer. Background Technology

[0002] Hair trimming is primarily accomplished through the interaction of fixed and moving blades on a hair trimmer (such as electric clippers). The fixed blade has multiple spaced-apart fixed teeth, and the moving blade has multiple spaced-apart moving teeth. The fixed blade is fixed to the hair trimming tool, and the moving blade is in close contact with it. Driven by an internal drive mechanism, the moving blade can reciprocate or rotate relative to the fixed blade. During this process, the fixed and moving teeth work together to trim the hair. Because the moving and fixed blades are in close contact, friction generates heat during the movement of the moving blade relative to the fixed blade, causing their surfaces to heat up. Lubricant is needed for lubrication and cooling. Existing methods often involve installing a ceramic tooth on the moving blade, which rubs against the fixed tooth to reduce lubrication requirements and heat generation.

[0003] However, in some existing blade structures, the ceramic blades on the fixed blades are not replaceable. The ceramic blades are easily damaged by impacts. For example, when the hair trimmer is dropped on the ground, the ceramic teeth will break, affecting the subsequent use and resulting in poor trimming effect. In addition, after a period of use, the sharpness of the ceramic blades will also decrease, which will affect the trimming effect of the hair trimmer and result in a poor user experience. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a replaceable insert blade head structure suitable for mounting on a hair trimmer. The replaceable insert blade head structure includes a fixed blade, a movable blade, and an insert blade. The insert blade is detachably mounted on the side of the fixed blade near the movable blade. The movable blade movably abuts against the insert blade. The fixed blade has fixed blade teeth, and the insert blade has insert blade teeth corresponding to the fixed blade teeth. A first hot melt adhesive is provided between the insert blade and the fixed blade, and the insert blade and the fixed blade are connected by a first hot melt adhesive. A hot melt adhesive is used for bonding and fixing. When disassembling the inlaid blade, an external heating tool is used to heat the part of the inlaid blade where the first hot melt adhesive is applied, so that the first hot melt adhesive melts and the inlaid blade can be separated from the fixed blade. This utility model has a replaceable blade head structure, which is simple in structure and low in production cost. The inlaid blade is bonded and fixed to the fixed blade by the first hot melt adhesive, which is simple to operate and secure. After the first hot melt adhesive is heated and melted, the inlaid blade can be removed from the fixed blade for replacement, resulting in low maintenance cost. After the inlaid blade is replaced, the trimming effect of the hair trimmer is guaranteed.

[0005] Optionally, the inlaid blade is made of ceramic.

[0006] Optionally, the fixed blade is made of stainless steel, aluminum alloy, or plastic.

[0007] Optionally, the fixed blade is provided with a groove for mounting the inlaid blade, the inlaid blade is embedded in the groove, the fixed blade is provided with a first side surface on the side near the moving blade, and the inlaid blade is provided with a second side surface on the side near the moving blade, the first side surface and the second side surface are flush or nearly flush.

[0008] Optionally, the inlaid blade has an outer sidewall, and the groove has an inner sidewall; when the inlaid blade is installed in the groove, the outer sidewall and the inner sidewall are in clearance fit.

[0009] Optionally, the fixed blade is provided with a first filling groove for filling the first hot melt adhesive.

[0010] Optionally, the inlay teeth are distributed in multiple ways along a straight line, and the first filling groove is strip-shaped and extends along the straight line.

[0011] Optionally, multiple first filling grooves are distributed along the straight line direction.

[0012] Optionally, the moving blade is provided with a first abutting part and a second abutting part, and a clearance groove is formed between the first abutting part and the second abutting part. The first abutting part movably abuts against the inlaid blade. The fixed blade is inlaid with an inlaid piece for movably abutting against the second abutting part. A second hot melt adhesive is provided between the fixed blade and the inlaid piece. The fixed blade is provided with a second filling groove for filling the second hot melt adhesive. The second filling groove is annular. The inlaid blade is made of ceramic material.

[0013] Compared to existing technologies, the replaceable inlaid blade structure of this utility model is simple in structure and low in production cost. The inlaid blade is bonded and fixed to the fixed blade using a first hot melt adhesive, making operation simple and the fixation reliable. After the first hot melt adhesive is heated and melted, the inlaid blade can be removed from the fixed blade for replacement, resulting in low maintenance costs. Replacing the inlaid blade ensures the trimming effect of the hair trimmer and extends its service life. It avoids the inlaid blade's cutting effect being affected by breakage, damage, or decreased sharpness. The inlaid blade is made of ceramic, which has high hardness and a low coefficient of friction. The inlaid blade, in conjunction with the moving blade, achieves the desired hair-cutting effect. The heat generated during friction between the inlaid blade and the moving blade is low, and the lubrication requirements are also low, eliminating the need for frequent lubrication. The fixed blade is made of stainless steel, aluminum alloy, or plastic, or other lighter materials can be selected to reduce the overall weight of the fixed blade, facilitating handheld operation, reducing the burden on the hand, and providing a better user experience.

[0014] In addition, this utility model also provides a hair trimmer, including the above-mentioned replaceable inlaid blade head structure. This hair trimmer also has the same beneficial effects of the above-mentioned replaceable inlaid blade head structure, which will not be described in detail here. Attached Figure Description

[0015] Figure 1 This is a perspective view of the replaceable inlaid blade head structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the fixed blade part of the replaceable inlaid blade cutter head structure of this utility model.

[0017] Figure 3 This is an exploded view of the fixed blade portion of the replaceable inlaid blade cutter head structure of this utility model.

[0018] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0019] Figure 5 This is a cross-sectional view of the replaceable inlaid blade head structure of this utility model;

[0020] Figure 6 for Figure 5 Enlarged view of section B;

[0021] Figure 7 This is a schematic diagram of the replaceable inlaid blade structure of the blade head of this utility model.

[0022] The component names corresponding to the various reference numerals in the figure are as follows: 1 is the fixed blade, 101 is the fixed blade tooth, 102 is the groove, 1021 is the inner side wall, 103 is the first side surface, 104 is the first filling groove, 105 is the second filling groove, 2 is the moving blade, 201 is the first abutting part, 202 is the second abutting part, 203 is the clearance groove, 3 is the inlaid blade, 301 is the inlaid blade tooth, 302 is the second side surface, 303 is the outer side wall, and 4 is the inlaid piece. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0026] See Figures 1-7This utility model provides a replaceable inlaid blade head structure suitable for mounting on a hair clipper. In this embodiment, the hair clipper is an electric clipper. The replaceable inlaid blade head structure includes a fixed blade 1, a moving blade 2, and an inlaid blade 3. The inlaid blade 3 is detachably mounted on the side of the fixed blade 1 near the moving blade 2. The moving blade 2 movably abuts against the inlaid blade 3. The inlaid blade 3 is a high-hardness, low-friction blade. During use, the high hardness of the inlaid blade 3 facilitates hair cutting and improves the sharpness of the trimming. The low friction coefficient of the inlaid blade 3 reduces heat generation, resulting in a low temperature rise of the fixed blade 1 and the moving blade 2 during trimming. The fixed blade 1 is provided with fixed blade teeth 101, and the inlaid blade 3 is provided with inlaid blade teeth 301 corresponding to the fixed blade teeth 101. The inlaid blade teeth 301 cooperate with the moving blade to achieve the effect of cutting hair. The inlaid blade teeth 301 on the inlaid blade 3 ensure the sharpness of the trimming, thereby improving the sharpness of the fixed blade 1 and the moving blade 2. The blade 1 can be made of a lighter material, making the overall blade 1 lighter and easier to hold. A first hot melt adhesive is provided between the embedded blade 3 and the fixed blade 1, bonding and fixing them together. When removing the embedded blade 3, an external heating tool, such as a heat gun or hair dryer, is used to heat the area where the first hot melt adhesive is applied, melting the adhesive and allowing the embedded blade 3 to separate from the fixed blade 1. This invention features a replaceable embedded blade head structure, which is simple in structure and low in production cost. Bonding the embedded blade to the fixed blade with the first hot melt adhesive is simple and secure. After the first hot melt adhesive melts, the embedded blade can be removed and replaced from the fixed blade, reducing maintenance costs. Replacing the embedded blade ensures the trimming effect of the hair trimmer and extends its service life. It also prevents the embedded blade from being damaged, broken, or losing sharpness, thus affecting the hair cutting effect.

[0027] See Figures 1-3The inlaid blade 3 is made of ceramic, which has high hardness and a low coefficient of friction. When used in conjunction with the moving blade, the inlaid blade 3 can effectively cut hair. The friction between the inlaid blade 3 and the moving blade generates little heat, requiring less lubrication and eliminating the need for frequent lubrication. The inlaid blade 3 can be made of traditional ceramic materials such as zirconium oxide and alumina, as well as newer ceramic materials such as cubic boron nitride. The fixed blade 1 is made of stainless steel, aluminum alloy, or plastic, or other lighter materials can be used to reduce the overall weight of the fixed blade 1, facilitating handheld operation and reducing the burden on the hand, resulting in a better user experience. The melting point range of the first hot melt adhesive can be selected from 80℃ to 150℃. Upon reaching the melting point of the first hot melt adhesive, it melts into a liquid state to facilitate the removal of broken, damaged, or poorly sharp inlaid blades 3. After removing the original inlaid blade 3, the remaining residue is cleaned away. The remaining hot melt adhesive is refilled with new hot melt adhesive to bond the new insert blade 3 for continued use, facilitating maintenance. When the selected fixed blade 1 is made of plastic, the melting point of the plastic is higher than that of the first hot melt adhesive to prevent damage to the fixed blade 1 when the first hot melt adhesive is melted. The fixed blade 1 can be made of plastic with a melting point higher than 170℃. The heating temperature of the fixed blade 1 during trimming is as follows for different materials: when the fixed blade 1 is made of steel, the heating temperature of the fixed blade 1 during trimming is generally lower than 39℃; when the fixed blade 1 is made of aluminum, the heating temperature of the fixed blade 1 during trimming is generally lower than 35℃; when the fixed blade 1 is made of 925 silver, the heating temperature of the fixed blade 1 during trimming is generally lower than 32℃. The first hot melt adhesive will not melt due to the heat generated by the fixed blade 1 itself during trimming. During use, the fixed blade 1 and the insert blade 3 are firmly bonded, ensuring reliable use.

[0028] See Figures 2-4 The fixed blade 1 is provided with a groove 102 for installing the inlaid blade 3. The inlaid blade 3 is embedded in the groove 102. The fixed blade 1 is provided with a first side surface 103 on the side near the moving blade 2, and the inlaid blade 3 is provided with a second side surface 302 on the side near the moving blade 2. The first side surface 103 and the second side surface 302 are flush or nearly flush to prevent the inlaid blade 3 from protruding too much or being recessed into the first side surface 103 of the fixed blade 1, thus avoiding interference with the moving blade 2 and allowing the moving blade 2 to swing back and forth smoothly.

[0029] See Figure 3 , Figure 4 and Figure 7The inlaid blade 3 is provided with an outer side wall 303, and the groove 102 is provided with an inner side wall 1021. When the inlaid blade 3 is installed in the groove 102, the outer side wall 303 and the inner side wall 1021 are in clearance fit, which increases the firmness of the inlaid blade 3 installation. The friction of the clearance fit is lower than that of the interference fit, so that the inlaid blade 3 can be removed from the fixed blade 1 after the first hot melt adhesive melts. In actual operation, after the first hot melt adhesive melts, the inlaid blade 3 can be pulled out of the groove 102 by using a suction cup or other tools to complete the disassembly. After disassembly, the first hot melt adhesive can be applied again to bond the inlaid blade 3 to the inlaid blade 1. The operation is convenient, the maintenance is simple, and the cost is low. The inlaid blade 3 and the fixed blade 1 can also be fixed by bolts or other fasteners to enhance the fixing effect.

[0030] See Figure 3 and Figure 4 The fixed blade 1 is provided with a first filling groove 104 for filling with the first hot melt adhesive, which facilitates the application of the first hot melt adhesive in the first filling groove 104 and makes it convenient for personnel to apply the adhesive. The first filling groove 104 is opened on the bottom surface of the groove 102. Multiple inlaid blade teeth 301 are distributed in a straight line. The first filling groove 104 is strip-shaped and extends in a straight line, so that the first hot melt adhesive in the first filling groove 104 can have more sufficient contact with the inlaid blade teeth 301. After the first hot melt adhesive solidifies, it will bond the inlaid blade teeth 301 to the fixed blade 1 more firmly. Multiple first filling grooves 104 are distributed in a straight line, which increases the contact area between the first hot melt adhesive and the inlaid blade teeth 301, making the bonding more firm.

[0031] See Figure 1 , Figure 5 and Figure 6The moving blade 2 is provided with a first abutting part 201 and a second abutting part 202. A clearance groove 203 is formed between the first abutting part 201 and the second abutting part 202, so that the part of the moving blade 2 with the clearance groove 203 will not come into contact with the fixed blade. During use, the moving blade 2 mainly abuts against the inlaid blade 3 and the inlaid piece 4. The frictional resistance is small and the heat generation is low when swinging. The first abutting part 201 abuts against the inlaid blade 3. The fixed blade 1 is embedded with an inlaid piece 4 for abutting against the second abutting part 202. A second hot melt adhesive is provided between the fixed blade 1 and the inlaid piece 4. The fixed blade 1 is provided with a second filling groove 105 for filling the second hot melt adhesive. The second filling groove 105 is annular and the adhesion is firm. The inlaid piece 4 can also be replaced when damaged. When replacing, the part of the inlaid piece 4 with the second hot melt adhesive is heated by heating tools such as a hot air gun. The second hot melt adhesive is melted, and the insert 4 is separated from the fixed blade 1 using a suction cup or other tools. The melting point range of the second hot melt adhesive can be selected as 80℃-150℃. The insert blade 3 is made of ceramic material to reduce the requirements for lubrication and the heat generated during friction. The first and second hot melt adhesives can be polyester hot melt adhesives, polyamide hot melt adhesives, or other hot melt adhesives that can bond ceramics. Polyester hot melt adhesives have excellent electrical insulation and good bonding strength, and good impact resistance, water resistance, cold resistance, media resistance, and elasticity. They have good adhesion to various materials such as metals and ceramics. Polyamide hot melt adhesives have excellent heat resistance, cold resistance, oil resistance, and chemical resistance. They are odorless, colorless, and can cure quickly, making them suitable for bonding various metal and non-metal materials. The insert 4 and the fixed blade 1 can also be reinforced by clearance fit, bolts, or other methods.

[0032] The replaceable inlaid blade head structure of this utility model is simple in structure and low in production cost. The inlaid blade is bonded and fixed to the fixed blade by a first hot melt adhesive, which is simple to operate and secure. After the first hot melt adhesive is heated and melted, the inlaid blade can be removed from the fixed blade for replacement, resulting in low maintenance costs. After the inlaid blade is replaced, the trimming effect of the hair trimmer is guaranteed and its service life is extended. It avoids the inlaid blade from being affected by factors such as breakage, damage, or reduced sharpness, which affect the hair cutting effect. The inlaid blade is made of ceramic material, which has high hardness and low coefficient of friction. The inlaid blade and the moving blade can achieve the hair cutting effect when working together. The heat generated during the friction between the inlaid blade and the moving blade is low, and the lubrication requirements are also low, eliminating the need for frequent addition of lubricant. The fixed blade is made of stainless steel, aluminum alloy, or plastic, or other lighter materials can be selected to reduce the overall weight of the fixed blade, making it easier to hold and reducing the burden when holding it, resulting in a better user experience.

[0033] In addition, this utility model also provides a hair trimmer, including the above-mentioned replaceable inlaid blade head structure. This hair trimmer also has the same beneficial effects of the above-mentioned replaceable inlaid blade head structure, which will not be described in detail here.

[0034] In the description of this disclosure, it should be understood that the terms "upper", "lower", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0035] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0037] In this disclosure, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first feature or in indirect contact with the first feature through an intermediate medium.

[0038] It should be noted that when a component is described as being "set on" another component, it can be directly on the other component or there may be an intervening component. When a component is described as "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is described as being "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A replaceable insert blade head structure, characterized in that, The device includes a fixed blade (1), a movable blade (2), and an inlaid blade (3). The inlaid blade (3) is detachably disposed on the side of the fixed blade (1) near the movable blade (2). The movable blade (2) movably abuts against the inlaid blade (3). The fixed blade (1) is provided with fixed blade teeth (101), and the inlaid blade (3) is provided with inlaid blade teeth (301) corresponding to the fixed blade teeth (101). A first hot melt adhesive is disposed between the inlaid blade (3) and the fixed blade (1), and the inlaid blade (3) and the fixed blade (1) are bonded and fixed by the first hot melt adhesive. When the inlaid blade (3) is disassembled, the part of the inlaid blade (3) provided with the first hot melt adhesive is heated by an external heating tool to melt the first hot melt adhesive, so that the inlaid blade (3) and the fixed blade (1) can be separated.

2. The replaceable inlaid blade head structure according to claim 1, characterized in that, The inlaid blade (3) is made of ceramic.

3. The replaceable insert blade head structure according to claim 1, characterized in that, The fixed blade (1) is made of stainless steel, aluminum alloy or plastic.

4. The replaceable inlaid blade head structure according to claim 1, characterized in that, The fixed blade (1) is provided with a groove (102) for installing the inlaid blade (3), the inlaid blade (3) is embedded in the groove (102), the fixed blade (1) is provided with a first side surface (103) on the side near the moving blade (2), and the inlaid blade (3) is provided with a second side surface (302) on the side near the moving blade (2). The first side surface (103) and the second side surface (302) are flush or nearly flush.

5. The replaceable insert blade head structure according to claim 4, characterized in that, The inlaid blade (3) is provided with an outer sidewall (303), and the groove (102) is provided with an inner sidewall (1021); when the inlaid blade (3) is installed in the groove (102), the outer sidewall (303) and the inner sidewall (1021) are in clearance fit.

6. The replaceable inlaid blade head structure according to claim 1, characterized in that, The fixed blade (1) is provided with a first filling groove (104) for filling the first hot melt adhesive.

7. The replaceable insert blade head structure according to claim 6, characterized in that, The inlaid cutting teeth (301) are distributed in multiple ways along a straight line, and the first filling groove (104) is strip-shaped and extends along the straight line.

8. The replaceable insert blade head structure according to claim 7, characterized in that, The first filling groove (104) has multiple grooves distributed along the straight line direction.

9. The replaceable insert blade head structure according to any one of claims 1-8, characterized in that, The moving blade (2) is provided with a first abutting part (201) and a second abutting part (202). A clearance groove (203) is formed between the first abutting part (201) and the second abutting part (202). The first abutting part (201) is in movable contact with the inlaid blade (3). The fixed blade (1) is inlaid with an inlaid piece (4) for moving contact with the second abutting part (202). A second hot melt adhesive is provided between the fixed blade (1) and the inlaid piece (4). The fixed blade (1) is provided with a second filling groove (105) for filling the second hot melt adhesive. The second filling groove (105) is annular. The inlaid blade (3) is made of ceramic material.

10. A hair trimmer, characterized in that, Includes a blade head structure with replaceable insert blades as described in any one of claims 1-9.

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