Method of manufacturing a hair trimmer attachment

Abstract

The present disclosure relates to methods of manufacturing a hair trimmer attachment. According to one aspect, there is provided a method of manufacturing a hair trimmer attachment for a hair trimmer, the hair trimmer attachment comprising a fixed blade comprising: a skin contact portion forming a surface of the hair trimmer attachment that in use of the hair trimmer is placed against a user's skin; and an angled portion that is angled relative to the skin contact portion, wherein a plurality of hair openings are spaced along a bend between the skin contact portion and the angled portion, the portion of the fixed blade between the hair openings forming guard teeth of the fixed blade, the method comprising: providing a sheet for forming the fixed blade; deforming the sheet on a fixed blade support of the hair trimmer attachment, thereby creating the bend between the skin contact portion and the angled portion of the fixed blade, the bend being curved or angled about an axis extending in a first direction; and forming a compound curved and / or angled portion on the guard teeth.

Description

Technical Field

[0001] This disclosure relates to a method of manufacturing a hair trimmer attachment, and particularly, but not exclusively, to a method of forming a fixed blade component of the hair trimmer attachment. Background Technology

[0002] See Figure 1 Electric hair trimmers typically include a detachable trimmer attachment 2, which includes a fixed blade 10 and a movable blade (not shown). The fixed blade 10 typically takes the form of a shield defining a skin contact surface 12 that is held against the user's skin during use of the hair trimmer. The fixed blade 10 defines a plurality of guard teeth 14 and hair openings 16 formed between the guard teeth. Hair can enter the hair openings 16 to be cut between the cutting elements of the fixed and movable blades.

[0003] See Figure 2a and Figure 2b In the use of the hair trimmer, trimmer attachment 2 can be used in the hair cutting direction D. H The trimmer attachment 2 moves across the user's skin. As shown, when the trimmer attachment 2 moves across the user's skin, hairs 4 in contact with the distal surface 14a of the protective teeth may deflect downwards toward the skin without entering the hair opening 16 or being cut by the hair trimmer.

[0004] Note that US2018 / 257248A1 discloses a hair trimmer accessory that includes a fixed blade support and a fixed blade. Summary of the Invention

[0005] According to a first particular aspect, a method is provided for manufacturing a hair trimmer attachment for a hair trimmer, the hair trimmer attachment including a fixed blade, the fixed blade comprising:

[0006] The skin contact area, which forms the surface of the hair trimmer attachment that rests against the user's skin during use, and

[0007] An angled portion, the angled portion being angled relative to the skin contact portion, for example, such that when the skin contact portion is placed against the user's skin, the angled portion extends away from the user's skin, wherein a plurality of hair openings are spaced apart along a curvature between the skin contact portion and the angled portion, and a retaining blade forms protective teeth for the retaining blade in the portion between the hair openings, the method comprising:

[0008] Provide sheets for forming retaining blades, such as mesh for forming retaining blades for hair trimming attachments;

[0009] The sheet is deformed to conform to the fixed blade support of the hair trimmer attachment, thereby creating a curved portion between the skin contact portion and the angled portion of the fixed blade, the curved portion being bent or angled about an axis extending in a first direction; and

[0010] At the protective teeth, a compound bend and / or angular portion is formed on the fixed blade. For example, the sheet material can be deformed on the fixed blade support to create a bend between the skin contact portion of the fixed blade and the angular portion. The compound bend and / or angular portion can be formed at the bend.

[0011] The accessory can be detachably coupled to the body of the hair trimmer, such as the handle. Alternatively, the accessory can be permanently attached to the body of the hair trimmer.

[0012] The surface of the bent and / or angled portion of the fixed blade component may be bent and / or angled about an axis extending in a first direction, and about an axis extending in a second direction, which is perpendicular to the first direction.

[0013] In a preferred embodiment, the second direction is perpendicular to the user's skin abutting the skin contact portion on the surface where the hair trimmer attachment is placed.

[0014] The combined bend and / or angle of the fixed blade at the guard teeth can be used to push the hair in contact with the guard teeth toward the hair opening for trimming by the hair trimmer.

[0015] The sheet can have a thickness of about 0.1 mm, such as between 0.08 mm and 0.15 mm. The composite bend and / or angular portion can be formed, for example, exclusively from the sheet. The composite bend and / or angular portion can be formed such that, in a plane parallel to the plane of the skin contact portion, the length around the composite bend and / or angular portion (e.g., the length around the outer surface of the composite bend and / or angular portion) is equal to or greater than the width of the portion of material between the hair openings before the composite bend and / or angular portion is formed. In other words, the composite bend and / or angular portion can be formed without removing material from the portion of the sheet between the hair openings.

[0016] In this way, composite bends and / or angled portions can be formed without compromising the structural strength of the fixed blade.

[0017] The portion of the sheet supported by the deformed fixed blade can have a shape including a compound curve and / or an angled shape in two or more vertical directions. Compound bends and / or angles are formed on the guard teeth by deforming the sheet at the fixed blade portion on the fixed blade support, causing the sheet to bend about an axis extending in a second direction perpendicular to the first direction. Forming the compound bends and / or angles of the guard teeth in this way can be quick and cost-effective, requiring fewer changes to tools, machines, or processes during the manufacture of hair trimmer attachments.

[0018] Forming a composite bend and / or angular portion on the guard tooth can include adding material to a surface (e.g., the outer surface of the guard tooth) such that the surface of the guard tooth has a composite bend shape. Forming the composite bend and / or angular portion of the guard tooth in this way can be quick and cost-effective, and can maintain the full width of the fixed blade material at the guard tooth.

[0019] The method may also include smoothing (e.g., deburring) the edges of the protective teeth, such as the edges of guide teeth defining hair openings. The edges can be smoothed such that, after smoothing, at least the length of the sheet thickness remains unchanged. Smoothing the edges of the protective teeth can also induce hair contacting the protective teeth to deflect into the hair opening without compromising the structure of the retaining blade and enhance skin comfort.

[0020] According to a second specific aspect, a hair trimmer attachment for a hair trimmer is provided, the hair trimmer attachment comprising:

[0021] Fixed blade support; and

[0022] Fixed blade, the fixed blade includes:

[0023] The skin contact area, which forms the surface of the hair trimmer attachment that rests against the user's skin during use, and

[0024] An angular portion, the angular portion being angled relative to the skin contact portion, for example such that when the skin contact portion is placed against the user's skin, the angular portion extends away from the user's skin, wherein a plurality of hair openings are spaced apart along the bends between the skin contact portions, the portion of the fixed blade between the hair openings forming protective teeth of the fixed blade, the bends being formed about an axis extending in a first direction; such that the fixed blade conforms to the shape of the fixed blade support, for example at the bends, wherein the fixed blade also includes a composite bend and / or angular portion formed on the protective teeth.

[0025] The surfaces of the bent and / or angled portions of the fixed blade component may be bent and / or angled about an axis extending in a first direction, and about an axis extending in a second direction perpendicular to the first direction. The fixed blade may include a sheet of material such as metal foil.

[0026] In a preferred embodiment, the second direction is perpendicular to the surface of the hair trimmer attachment on which the user's skin is placed against the skin contact portion.

[0027] The portion of the fixed blade support can have a compound bend and / or angular shape, and the guard teeth are manufactured to conform to this shape. The guard teeth can be deformed on the portion of the fixed blade support having a compound bend and / or angular shape to form the compound bend and / or angular portion on the guard teeth. Additionally or alternatively, the hair trimmer attachment may include an additional layer of material applied to the sheet surface at the guard teeth, such that the compound bend portion is formed by the additional material layer. Therefore, the compound bend and / or angular portion can be formed on the guard teeth without removing material from them.

[0028] These and other aspects will become apparent and elucidated with reference to the embodiments described below. Attached Figure Description

[0029] Exemplary embodiments will now be described by way of example only, with reference to the following accompanying drawings. In the drawings:

[0030] Figure 1 This is a front perspective view of the previously proposed hair trimmer attachment;

[0031] Figure 2a and Figure 2b This is a partial top view of the previously proposed hair trimmer attachment;

[0032] Figure 3 This is a cross-sectional view of a hair trimmer accessory arranged according to this disclosure;

[0033] Figure 4 yes Figure 3 A perspective view of the skin-contact surface of the hair trimmer attachment shown;

[0034] Figure 5 This is a flowchart of a method for manufacturing a hair trimmer accessory arranged according to this disclosure;

[0035] Figure 6a and Figure 6b At different stages of the method of manufacturing hair trimmer accessories arranged according to this disclosure, along Figure 4 The diagram shows a cross-sectional view of the protective teeth and part of the fixed blade taken by line AA.

[0036] Figure 7a and Figure 7b This is at a different stage of another method for manufacturing hair trimmer accessories arranged according to this disclosure, along Figure 4 The diagram shows a cross-sectional view of the protective teeth and part of the fixed blade taken from line AA; and

[0037] Figure 8 This is a partial top view of the hair trimmer attachment arranged according to this disclosure; and

[0038] Figure 9a and Figure 9b This is a partial top view of the hair trimmer attachment arranged according to this disclosure. Detailed Implementation

[0039] See Figure 3 and Figure 4 The hair trimmer accessory 100 for a hair trimmer includes a fixed blade 110, a fixed blade support 120, a movable blade 130, a movable blade support 140, and a transmission component 150.

[0040] like Figure 3 and Figure 4 As shown, the fixed blade 110 can form a protective barrier for the hair trimmer attachment 100, limiting contact between the user's skin and the movable blade 130 of the hair trimmer attachment 100. The fixed blade 110 may include a sheet formed above and supported by the fixed blade support 120. The fixed blade 110 includes a skin contact portion 112 that defines a skin contact surface 112a, which is held against the user's skin during use of the hair trimmer. The skin contact surface 112a may be planar, for example, defining a flat or curved plane.

[0041] The fixed blade 110 also includes an angled portion 114, which is angled relative to the skin contact portion 112. For example, the angled portion 114 may be angled relative to the skin contact portion 112 at an angle between 90 degrees and 180 degrees. When the skin contact surface 112a is placed against the user's skin, the angled portion 114 may extend away from the user's skin. As shown, the angled portion 114 extends from the lateral side of the skin contact portion. The fixed blade 110 may be coupled to the fixed blade support 120 at the angled portion.

[0042] A bend 116 is formed between the skin contact portion 112 and the angled portion 114. In the illustrated arrangement, the bend 116 is a smooth, continuous bend formed about an axis extending in a first direction D1 of the hair trimmer attachment 100. In other arrangements, the bend 116 may include one or more discontinuous changes in the angle between the skin contact portion 112 and the angled portion 114.

[0043] Multiple hair openings 118 are formed in the fixed blade 110. As shown, the multiple hair openings 118 can be located in the longitudinal direction D of the hair trimmer attachment 100. L The upper curved portion 116 is spaced apart. The hair opening 118 can extend from the curved portion 116 into the skin contact portion 112 and / or the angled portion 114 of the fixed blade 110 to form a hair opening 118 of a desired size for receiving hair.

[0044] A portion of the fixed blade 110 between the hair openings 118 (e.g., a portion of the skin contact area 112, a portion of the curved portion 116, and a portion of the angular portion 114) can form a protective tooth 119 for the fixed blade 110. The curved portion 116, and optionally the portion of the skin contact area and / or the angular portion adjacent to the curved portion 116, can form the distal end 119a of the protective tooth 119 when the hair trimmer attachment 100 is along the hair cutting direction D. H As it moves across the user's skin, the distal end 119a first contacts the hair. For example... Figure 4 As shown, the fixed blade 110 may include a plurality of protective teeth 119 forming a protective comb.

[0045] like Figure 3 and Figure 4 As shown, the hair trimmer attachment 100 can be symmetrical in the lateral direction of the hair trimmer attachment, and can include an angled portion 114, a curved portion 116, and a plurality of hair openings 118 on each lateral side of the skin contact portion 112. As shown, the angled portions 114 provided on any lateral side can be arranged at the same angle relative to the skin contact portion, or they can be at different angles.

[0046] The movable blade 130 is held against the fixed blade 110 by a movable blade support 140 and, in use of the hair trimmer, is moved relative to the fixed blade 110 by a transmission member 150, for example, reciprocating. The movable blade 130 may include blade element combs on each lateral side of the movable blade 130, the blade element combs corresponding to the hair openings 118 combs in the fixed blade. The blade elements may be configured to engage with the edges of guard teeth 119 to cut hair entering the hair openings 118. In some arrangements, the pitch and / or pattern of the blade element combs on the movable blade 130 may differ from the pitch and / or pattern of the hair openings 118 in the fixed blade, for example, to cause the corresponding guard teeth 119 to interlace with the hair between the blade elements.

[0047] You can choose hair opening 118 in the longitudinal direction D. LThe width of the upper part is adjusted to balance the hair-cutting performance of the hair trimmer, user comfort, and the structural strength of the fixed blade 110. Providing a wider hair opening 118 separated by narrower guard teeth allows the hair trimmer attachment 100 to be positioned within the hair-cutting direction D of the hair trimmer. H During the upward movement, more hair is received into the hair opening 118. Furthermore, narrower guard teeth can contact and deflect fewer hairs, resulting in fewer hairs being deflected and uncut. However, increasing the width of the hair opening 118 can reduce user comfort because the user's skin can more easily, at least partially, enter the hair opening 118. Reducing the width of the guard teeth 119 can increase pressure on the user's skin during use of the hair trimmer and can reduce the structural strength of the retaining blade 110, for example, at the distal end 119a of the guard teeth, potentially shortening the lifespan of the hair trimmer accessory 100 before it must be replaced.

[0048] In one or more arrangements, the width of the hair opening 118 (e.g., in the longitudinal direction D) L The width of the hair opening 118 can be 0.3 mm, for example, approximately 0.3 mm. For example, the width of the hair opening 118 can be between 0.25 mm and 0.4 mm. The width of the protective tooth 119 (e.g., in the longitudinal direction D...) L The width of the tooth (on the tooth) can be 0.3 mm, for example, about 0.3 mm. For example, the width of the guard tooth 119 can be 0.3 mm or greater.

[0049] See Figure 5 Hair trimmer attachments, such as hair trimmer attachment 100, can be manufactured according to method 500. Method 500 includes a first frame 502, providing material for forming the retaining blade 110. The material can be a sheet, such as a foil, or a metal foil. Alternatively, the material can be a polymeric material or a composite material, such as a metal with a polymer coating. The thickness of the material can be 0.1 mm, for example, about 0.1 mm, such as between 0.08 mm and 0.15 mm.

[0050] The material provided at the first frame 502 may include the net shape of the retaining blade 110 for the hair trimmer attachment 100. The material may include openings configured to, for example, form hair openings 118 in the retaining blade 110 once the material is formed. The sheet and the openings for forming the hair openings 118 can be manufactured using any desired process or processes. For example, the material can be manufactured using stamping or etching processes. Alternatively, an electroforming process, such as nickel electroforming, can be used to grow the material into the desired shape.

[0051] Method 500 also includes a second frame 504 that deforms the sheet on the fixed blade support 120 of the hair trimmer attachment, thereby creating a bend 116 between the skin contact portion 112 and the angled portion 114 of the fixed blade. As described above, the bend 116 may be bent and / or angled about an axis extending in the first direction, and at the second frame, the fixed blade 110 may be deformed about an axis extending in the first direction D1, for example, bent, folded, or angled.

[0052] As mentioned above Figure 3 and Figure 4 The hair trimmer attachment 100 may be symmetrical and may include an angled portion 114 located on either lateral side of the fixed blade 110. The second block 504 of method 500 may be repeated to create a bend 116 on the other lateral side of the fixed blade 110, between the skin contact portion 112 and the angled portion 114.

[0053] Method 500 also includes a third frame 506, where a compound bend and / or angular portion is formed on the guard tooth 119 (e.g., at the distal end 119a of the guard tooth). In other words, at the third frame 506, the surface of the fixed blade 110 forming the distal end 119a of the guard tooth 119, for example, the portion of the guard tooth 119 that can first contact the hair when the hair trimmer moves along the hair trimming direction, can be formed or shaped as an axis extending about a first direction D1 and in a second direction perpendicular to the first direction D1 (e.g., ...). Figure 6a and Figure 7a The axis extending on (as shown) is bent and / or angled. In some arrangements, the surface of the fixed blade 110 forming the distal end 119a of the guard tooth can be formed or shaped such that the surface is spherical, for example, forming a portion of a spherical surface.

[0054] The composite bend and / or angled portion can be formed on the guard teeth without removing material from the fixed blade. More specifically, the composite bend and / or angled portion can be formed on the guard teeth without removing material from the fixed blade, thereby reducing the material width of the guard teeth relative to at least the thickness of the sheet forming the guard teeth. Therefore, the length of one guard tooth 119 surrounding the composite bend and / or angled portion in a plane parallel to the skin contact portion and / or the first direction can be substantially equal to or greater than the width of one guard tooth in the guard teeth before the composite bend portion is formed (e.g., before the third frame 506 of method 500). For example, the length surrounding the composite bend and / or angled portion can be 0.3 mm or more, or 0.25 mm or more.

[0055] For example, compared to hair trimmer attachments that remove material from the fixed blade to shape the protective tooth, forming a composite bend and / or angular portion on the protective tooth in this manner can improve the structural strength of the fixed blade 110 at the distal end 119a of the protective tooth.

[0056] In some arrangements, the composite bending and / or angular portions of the fixed blade may be formed from a sheet material, for example, provided at the first frame 502, for example exclusively formed from that sheet material.

[0057] Figure 6a A partial cross-section of the guard tooth 119 and the fixed blade support 120 passing through the fixed blade 110 in a plane parallel to the skin contact portion 112 and the first direction D1 is depicted after the completion of the second frame 504 and before the completion of the third frame 506 in method 500. As shown, at this stage of method 500, the cross-section of the distal end 119a of the guard tooth 119 is substantially flat and planar.

[0058] like Figure 6a and Figure 6b As shown, the portion of the fixed blade support 120 on which each protective tooth of the fixed blade 110 is deformed can have a bent and / or angled shape about an axis extending about a second direction D2 perpendicular to the first direction D1. At the third block 506 of the method, a compound bent and / or angled portion is formed on the distal end 119a of the protective tooth by deforming each portion of the fixed blade 110 forming the protective tooth in a compound bent and / or angled shape on the corresponding axis extending about the second direction D2 of the fixed blade support 120. Specifically, the bent and / or angled portion can be formed by bending and / or angled the fixed blade 110, such as the distal end 119a of the protective tooth, about an axis extending about the second direction D2. Figure 6b As shown, the protective teeth can be deformed to conform to the compound bending and / or angular shape of the fixed blade support 120.

[0059] Figure 7a A partial cross-sectional view is shown of the guard teeth 719 of the fixed blade 710 and the fixed blade support 720 of a hair trimmer attachment 700 arranged in another manner according to this disclosure. The hair trimmer attachment 700 is similar to the hair trimmer attachment 100, and the features described above that are associated with the hair trimmer attachment 100 are equally applicable to the hair trimmer attachment 700.

[0060] Figure 7a The partial cross-section shown is located in a plane parallel to the skin contact portion of the fixed blade 710 and the first direction D1. Figure 7aThe diagram shows the fixed blade 710 and fixed blade support 720 after the second frame 504 is completed and before the third frame 506 is completed. As shown, at this stage of method 500, the cross-section of the distal end 719a of the guard tooth is substantially flat and planar.

[0061] like Figure 7b As shown, at the third frame 506, a bent and / or angled portion can be formed on the protective tooth 719 by applying a layer of material 770 to the protective tooth. This layer may include a polymer material, which can be applied to the protective tooth and cured to form the material 770 layer.

[0062] exist Figure 7a and Figure 7b In the arrangement shown, the portion of the fixed blade support 720 supporting one of the protective teeth 119 does not include a compound bend or angled shape. However, in other arrangements, the shape of the fixed blade support 720 may be similar to... Figure 6a and Figure 6b The fixed blade support 120 depicted in the image has the same shape.

[0063] Reference Figure 8 In some arrangements, after forming the complex bends and / or angular portions on the guard teeth, the edges of the guard teeth 119 are smoothed, for example, by removing burrs 800 present on the edges of the guard teeth, such as those defining hair openings 118. The thickness of the material removed from the retaining blade 110, for example, the depth or radius of the cavity applied to the edge of the retaining blade to smooth the edge of the guard teeth, can be less than the thickness of the sheet forming the retaining blade. Therefore, in a plane parallel to the skin contact portion and / or the first direction, the length of the complex bends and / or angular portions surrounding at least the thickness of the sheet after smoothing can remain unchanged.

[0064] See Figure 9a and Figure 9b By forming composite bends and / or angled portions on the protective teeth 119, 719, the protective teeth can be shaped such that, during use of the hair trimmer, when the fixed blades 110, 710 are in the hair trimming direction D... H During upward movement, due to the curved and / or angular shape of the distal ends 119a and 719a of the guard teeth, hairs that are not aligned with the hair opening 118 and are in contact with the guard teeth are laterally pushed towards the hair opening 118. Hairs pushed towards the hair openings 118 and 718 can enter the hair openings to reach the movable blades, thereby being trimmed by the hair trimmer along with hairs already aligned with the hair openings. Therefore, forming curved and / or angular portions on the guard teeth can increase the trimmer's performance in the hair trimming direction D. HThe amount of hair trimmed by the hair trimmer during a single movement. As mentioned above, the width of the guard teeth and the opening can be selected to balance hair-cutting performance with skin comfort and the structural strength of the retaining blade. However, by forming curved and / or angled portions on the guard teeth as described herein, the hair-cutting performance of the hair trimmer can be improved without affecting skin comfort or the structural strength of the retaining blade.

[0065] In practicing the principles and techniques described herein, variations of the disclosed embodiments will be understood and implemented by those skilled in the art through study of the accompanying drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude multiple. A single processor or other unit can satisfy multiple functions described in the claims. The fact that certain measures are described in mutually different dependent claims does not indicate that a combination of these measures cannot be used to obtain an advantage. Computer programs can be stored or distributed on suitable media, such as optical storage media or solid-state media provided with or as part of other hardware, but can also be distributed in other forms, such as via the Internet or other wired or wireless telematics systems. Any reference numerals in the claims should not be construed as limiting the scope.

Claims

1. A method (500) for manufacturing a hair trimmer attachment (100, 700) for a hair trimmer, the hair trimmer attachment comprising a retaining blade (110, 710), the retaining blade comprising: The skin contact portion (112) forms the surface of the hair trimmer attachment, and during use of the hair trimmer, the surface abuts against the user's skin. An angled portion (114) is formed relative to the skin contact portion, wherein a plurality of hair openings (118, 718) are spaced apart along a bend (116) between the skin contact portion and the angled portion, and the fixed blade forms protective teeth (119, 719) of the fixed blade in the portion between the hair openings, the method comprising: Provide a sheet for forming the fixed blade; The sheet is deformed to conform to the fixed blade support (120, 720) of the hair trimmer attachment, thereby creating the bend between the skin contact portion and the angled portion (114) of the fixed blade, the bend being bent and / or angled about an axis extending in a first direction (D1); and At the protective tooth, a compound bending and / or angular portion is formed on the fixed blade, such that the surface of the protective tooth is bent and / or angular about an axis in the first direction and about an axis in a second direction, the second direction being perpendicular to the first direction. The portion of the sheet material on which the fixed blade support (120, 720) is deformed has a shape including a compound curve, wherein the sheet material is deformed on the fixed blade support at the portion of the fixed blade (110, 710) to bend the sheet material about an axis extending in a second direction (D2) perpendicular to the first direction (D1), and the compound bend and / or angled portion is formed on the protective teeth (119, 719).

2. The method (500) according to claim 1, wherein the second direction is perpendicular to the surface of the hair trimmer attachment, the surface abutting against the user's skin at the skin contact portion (112).

3. The method (500) according to claim 1, wherein the composite bend and / or angular portion is formed such that the length of the composite bend and / or angular portion surrounding the plane of the skin contact portion (112) and / or the plane parallel to the first direction is substantially equal to or greater than the width of the portion of material between the hair openings (118, 718) before the composite bend and / or angular portion is formed.

4. The method (500) according to claim 1, wherein forming the composite bending and / or angular portion on the protective tooth (119, 719) comprises adding material (770) to the surface of the protective tooth (119, 719) such that the surface of the protective tooth has a composite bending and / or angular shape.

5. The method (500) according to claim 1, wherein the sheet has a thickness of 0.1 mm.

6. The method (500) according to any one of the preceding claims, wherein the method further comprises: Smooth the edges of the protective teeth (119, 719).

7. A hair trimmer attachment (100, 700) for a hair trimmer, said hair trimmer attachment comprising: Sheets; Fixed blade support (120, 720); as well as Fixed blades (110, 710), the fixed blades comprising: The skin contact portion (112) forms the surface of the hair trimmer attachment, which, during use of the hair trimmer, abuts against the user's skin. An angular portion (114) is angled relative to the skin contact portion, wherein a plurality of hair openings (118, 718) are spaced apart along a bend (116) between the skin contact portions, and the portion between the hair openings of the fixing blade forms a protective tooth (119, 719) of the fixing blade, the bend being formed about an axis extending in a first direction (D1) such that the fixing blade conforms to the shape of the fixing blade support, wherein the fixing blade further includes a compound bend and / or angular portion formed on the protective tooth such that the surface of the protective tooth is bent and / or angular about an axis in the first direction and about an axis in a second direction perpendicular to the first direction; The portion of the sheet material on which the fixed blade support (120, 720) is deformed has a shape including a compound curve, wherein the sheet material is deformed on the fixed blade support at the portion of the fixed blade (110, 710) to bend the sheet material about an axis extending in a second direction (D2) perpendicular to the first direction (D1), and the compound bend and / or angled portion is formed on the protective teeth (119, 719).

8. The hair trimmer attachment (100, 700) according to claim 7, wherein the second direction is perpendicular to the surface of the hair trimmer attachment, the surface abutting against the user's skin at the skin contact portion (112).

9. The hair trimmer attachment (700) according to claim 7 or 8, wherein the fixed blade (110, 710) of the hair trimmer attachment (700) further includes an additional material (770) layer, the additional material layer being applied to the surface of the sheet at the protective tooth (719) such that the composite curved portion is formed by the additional material layer.

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