Cutter head assembly and shaver

Abstract

The shaver head assembly is characterized in that the shaver head assembly further comprises a jacking mechanism and a tensioning mechanism, the jacking mechanism drives a movable blade part to apply upward jacking force to a flexible mesh, and a bent part in the flexible mesh is jacked to a preset position in a mesh seat; the tensioning mechanism synchronously applies downward tensioning force to the side walls of the two sides of the bent part in the flexible mesh, so that the bent part in the flexible mesh and the movable cutter component are always kept attached to each other at any axial position in the mesh seat, and the side walls of the two sides of the bent part in the flexible mesh are kept in a tensioning state when the flexible mesh is located at any position relative to the mesh seat. The device has the beneficial effects that the jacking and supporting mechanism and the tensioning mechanism are additionally arranged, the jacking and supporting mechanism can be used for applying upward jacking and supporting force to the bent part of the flexible mesh during assembly, and meanwhile, the tensioning mechanism is used for applying downward tensioning force to the side walls of the two sides of the bent part; therefore, lateral bulging deformation of the two side walls of the bent part when the flexible mesh is extruded by the skin is prevented, and the beard trimming performance and trimming benefits are improved.

Description

Technical Field

[0001] This invention relates to a hair trimming device for beards and other hair, and more specifically to a blade assembly and razor, mainly applicable to the field of personal care tools such as razors and hair trimmers. Background Technology

[0002] Existing reciprocating cutter head assemblies mainly include a flexible mesh, a stationary cutter holder that fixes the flexible mesh, a moving cutter, and a moving cutter holder that mounts the moving cutter. The moving cutter and the moving cutter holder are placed below the flexible mesh, and under the drive of the drive mechanism, the moving cutter holder and the moving cutter can swing back and forth along the flexible mesh to trim hairs such as beards.

[0003] like Figures 1-2 As shown, the existing flexible mesh (1a) is basically bent around the middle reference, and its two sides are fixedly connected to the stationary blade holder (1b) as a whole. Although this installation method can ensure the installation firmness and working stability of the flexible mesh, when the flexible mesh comes into contact with the skin and is subjected to skin pressure, the inverted U-shaped bending part of the flexible mesh is very prone to lateral deformation, causing the two side walls of the U-shaped bending part to bulge towards the sides. At this time, not only is the cutting sharpness of the blade assembly severely reduced, reducing the efficiency of trimming hair such as beards; at the same time, it is also prone to pulling, causing the user's skin to experience pulling pain, resulting in a poor user experience. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a blade assembly and a shaver. By improving the assembly structure of the flexible mesh, the flexible mesh maintains a taut tension (also known as a strain force) on both sides, regardless of its initial state or when subjected to external force. This prevents bulging deformation on both sides of the flexible mesh, ensuring its cutting sharpness and preventing fraying, thus improving user comfort. Furthermore, when the flexible mesh is subjected to external force, it moves downward synchronously with the moving blade and automatically resets.

[0005] To solve the above technical problems, the present invention provides a blade assembly, including a flexible mesh sheet, a mesh sheet holder, and a moving blade component. The two sides of the flexible mesh sheet are connected to the mesh sheet holder, forming a curved section in the middle of the flexible mesh sheet. The moving blade component is placed inside the mesh sheet holder and below the curved section, and can reciprocate along the flexible mesh sheet under the drive of a driving mechanism. The assembly also includes a supporting mechanism and a tensioning mechanism. The supporting mechanism drives the moving blade component to apply an upward supporting force to the flexible mesh sheet, pushing the curved section of the flexible mesh sheet to a predetermined position within the mesh sheet holder. The tensioning mechanism simultaneously applies a downward tensioning force to the two sidewalls of the curved section of the flexible mesh sheet, ensuring that the curved section and the moving blade component remain in contact at any axial position within the mesh sheet holder, and that the two sidewalls of the curved section remain tensioned regardless of the position of the flexible mesh sheet relative to the mesh sheet holder.

[0006] Preferably, when the flexible mesh is subjected to external force, the bending part pressing down knife component moves downward synchronously along the axial direction of the mesh seat, and when the external force disappears, the flexible mesh and the knife component automatically reset relative to the mesh seat under the supporting force of the supporting mechanism.

[0007] Preferably, the supporting force of the supporting mechanism is greater than the tensioning force of the tensioning mechanism.

[0008] Preferably, the flexible mesh includes a flexible sheet body and a rigid plate, with the two sides of the sheet body being fixedly connected to the plate body as a whole; the plate body is provided with an axial sliding hole and is detachably connected to the mesh seat, so that the flexible mesh body is limited relative to the mesh seat in the reciprocating swing direction, and when the flexible mesh body is subjected to external force, the sheet body and the plate body can be synchronously displaced downward along the axial direction of the mesh seat.

[0009] Preferably, the mesh seat is closed on all four sides but open at the top and bottom to form an installation cavity inside the mesh seat. Hooks are provided on the two inner walls opposite to each other in the installation cavity. The axial sliding hole is fitted onto the hook so that the flexible mesh can be displaced downward along the axial direction of the mesh seat when subjected to external force. The upper and lower ends of the axial sliding hole abut against the hook to limit the upper and lower displacement stroke of the flexible mesh.

[0010] Preferably, the top support mechanism consists of a top support spring and a top support base. The moving blade component is connected to one end of the top support base, and the other end of the top support base is movably engaged with the drive mechanism. The top support spring is placed between the drive mechanism and the top support base so that the elastic force of the top support spring supports the moving blade component, keeping it in contact with the inner surface of the curved part of the flexible mesh at all times.

[0011] Preferably, the moving blade component includes a moving blade and a moving blade holder. Several moving blades are arranged side by side and fixed on the moving blade holder to form an integral part of the moving blade holder. The moving blade holder is hinged to the top support base so that the moving blade holder and the moving blades reciprocate along the curved part of the flexible mesh under the drive of the driving mechanism.

[0012] Preferably, the tensioning mechanism includes at least one tension spring that applies downward tension to the two sidewalls of the curved portion in the flexible mesh and tension spring seats that fix the two ends of the tension spring. One tension spring seat is disposed on the plate, and the other tension spring seat is disposed on the inner wall of the mesh seat or in the machine body. The two ends of the tension spring are respectively connected to the tension spring seats so that the two sidewalls of the curved portion are in a tensioned state when the flexible mesh is at any axial height position in the mesh seat.

[0013] Preferably, the tensioning mechanism includes at least two tension springs that apply downward tension to the two sidewalls of the curved portion of the flexible mesh, and four spring seats that fix the two ends of the tension springs; wherein, two spring seats are disposed on a support plate, and the two ends of the support plate are respectively connected to the sheet to form a frame-shaped whole; the other two spring seats are respectively disposed on the two inner sidewalls of the mesh seat, one end of the tension spring abuts against the mesh seat, and the other end abuts against the support plate, so that the two sidewalls of the curved portion are in a tensioned state when the flexible mesh is at any axial height position within the mesh seat.

[0014] Based on the aforementioned blade assembly, this application also proposes a razor that includes the aforementioned blade assembly.

[0015] The beneficial effect of this invention is that by simultaneously adding a support mechanism and a tensioning mechanism to the blade assembly, during assembly, the support mechanism first applies an upward supporting force to the curved portion of the flexible mesh, while the tensioning mechanism applies a downward tensioning force (or downward pulling force) to the side walls of the curved portion of the flexible mesh. At this time, regardless of whether the flexible mesh is in its initial working state or in a state of axial downward displacement under skin pressure, the side walls of the curved portion of the flexible mesh remain taut under the tensioning force of the tensioning mechanism. This effectively prevents lateral bulging deformation of the side walls of the curved portion of the flexible mesh under skin pressure, ensuring the shearing force between the moving blade and the flexible mesh, improving beard trimming performance and efficiency; at the same time, it avoids hair pulling or fraying, improving the comfort of using the blade assembly. Attached Figure Description

[0016] Figure 1 Cross-sectional view of the existing flexible mesh and stationary knife holder installation structure.

[0017] Figure 2 This is a simulated force diagram of the existing flexible mesh and stationary blade holder during use.

[0018] Figure 3 This is a three-dimensional structural diagram of the mesh holder in an embodiment of the present invention.

[0019] Figure 4 This is a three-dimensional sectional view of the mesh holder in an embodiment of the present invention.

[0020] Figure 5This is a three-dimensional structural diagram of the flexible mesh in an embodiment of the present invention.

[0021] Figure 6 This is a three-dimensional assembly structure diagram of the flexible mesh and mesh holder in an embodiment of the present invention.

[0022] Figure 7 This is an assembly cross-sectional view of the first embodiment of the tensioning structure in this invention.

[0023] Figure 8 This is an assembly cross-sectional view of the second embodiment of the tensioning structure in this invention.

[0024] Figure 9 This is a three-dimensional assembly diagram of the second embodiment of the tensioning structure in this invention.

[0025] Figure 10 This is a cross-sectional view of the assembly of the top support structure and the moving blade component in an embodiment of the present invention.

[0026] Figure 11 This is a three-dimensional structural diagram of the shaver according to an embodiment of the present invention.

[0027] Figure 12 This is a cross-sectional view of the first embodiment of the shaver assembly tensioning structure according to the present invention.

[0028] Figure 13 This is a cross-sectional view of a second embodiment of the tensioning structure for a shaver assembly according to the present invention. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-12 Further explanation of the embodiments of the present invention:

[0030] This invention relates to a blade assembly, comprising a flexible mesh 1, a mesh seat 2, and a moving blade component 3. The two sides of the flexible mesh 1 are connected to the mesh seat 2, forming a curved section 11 in the middle of the flexible mesh 1. In actual production, at least a number of spaced mesh openings are provided in the curved section 11 for guiding hair such as beard hair. The moving blade component 3 is placed inside the mesh seat 2 and below the curved section 11. Driven by a driving mechanism 4, the moving blade component 3 reciprocates along the flexible mesh 1. When beard hair enters the flexible mesh 1 through the mesh openings, the moving blade component 3 works in conjunction with the flexible mesh 1 to cut the beard hair.

[0031] Since the existing flexible mesh 1 is directly fixed to the mesh base 2 on both sides, although this ensures the installation firmness and working stability of the flexible mesh 1, when the flexible mesh 1 comes into contact with the skin and is subjected to skin pressure, the curved part 11 of the flexible mesh 1 is very prone to lateral deformation, causing the two side walls of the curved part 11 to bulge and deform towards both sides, such as... Figures 1-2As shown, this not only severely reduces the cutting sharpness of the blade assembly and the efficiency of trimming hair such as beards, but also easily causes fraying, resulting in pulling pain on the user's skin and a poor user experience.

[0032] Based on this, this application proposes a technical solution that adds a supporting mechanism 5 and a tensioning mechanism 6 to the aforementioned blade assembly. The supporting mechanism 5 drives the moving blade component 3 to apply an upward supporting force to the flexible mesh 1, pushing the curved portion 11 in the flexible mesh 1 to a predetermined position within the mesh holder 2 (the predetermined position can also be considered the initial working position of the flexible mesh 1). Because of the supporting mechanism 5, the moving blade component 3 can always maintain contact with the inner surface of the curved portion 11 in the flexible mesh 1, ensuring sufficient shearing force between the moving blade component 3 and the flexible mesh 1 to cut the beard, thereby achieving beard trimming.

[0033] Although the supporting mechanism 5 ensures sufficient shearing force between the moving blade component 3 and the curved portion 11 of the flexible mesh 1, the side walls of the existing flexible mesh 1 are fixedly connected to the mesh seat 2. When the flexible mesh 1 contacts the skin and is subjected to skin pressure, it cannot move downward to create a buffer space. At this time, the side walls of the curved portion 11 of the flexible mesh 1 will undergo lateral deformation, causing the side walls of the curved portion 11 to bulge outwards towards both sides. Figures 1-2 As shown, this not only increases the frictional resistance between the moving blade component 3 and the flexible mesh 1, causing the surface temperature of the flexible mesh 1 to rise and thus burn the skin; at the same time, due to the bending and deformation of the flexible mesh 1, the cutting sharpness between the moving blade component 3 and the flexible mesh 1 will also be severely affected.

[0034] To prevent the flexible mesh 1 from bulging and deforming on both sides when it comes into contact with the skin and is subjected to skin pressure, the side walls of the curved portion 11 of the flexible mesh 1 are detachably and movablely connected to the mesh seat 2, and a tensioning mechanism 6 is added to the side walls of the flexible mesh 1. In this way, when the supporting mechanism 5 drives the moving blade component 3 to support the curved portion 11 of the flexible mesh 1, the tensioning mechanism 6 simultaneously applies a downward tensioning force to the side walls of the curved portion 11 of the flexible mesh 1, so that the curved portion 11 of the flexible mesh 1 and the moving blade component 3 always remain in contact at any axial position within the mesh seat 2, and the side walls of the curved portion 11 of the flexible mesh 1 remain taut when the flexible mesh 1 is in any position relative to the mesh seat 2.

[0035] By simultaneously adding a support mechanism 5 and a tensioning mechanism 6 to the blade assembly, during assembly, the support mechanism 5 applies an upward supporting force to the curved portion 11 of the flexible mesh 1, while the tensioning mechanism 6 applies a downward tensioning force (or downward pulling force) to the side walls of the curved portion 11 of the flexible mesh 1. At this time, regardless of whether the flexible mesh 1 is in its initial working state or in a state of axial downward displacement under skin pressure, the side walls of the curved portion 11 of the flexible mesh 1 remain taut under the tensioning force of the tensioning mechanism 6. This effectively prevents the side walls of the curved portion 11 of the flexible mesh 1 from laterally bulging and deforming under skin pressure, ensuring the shearing force between the moving blade component 3 and the flexible mesh 1, improving beard trimming performance and efficiency; at the same time, it avoids pulling or tangling of hair, improving the comfort of using the blade assembly.

[0036] The axial direction mentioned in the context refers to the reciprocating swing direction perpendicular to the moving blade component 3, and can also be understood as the length direction of the razor. When the flexible mesh 1 is subjected to skin pressure, the flexible mesh 1 will displace downward in a direction perpendicular to the swing direction.

[0037] In practical use, when the flexible mesh 1 is subjected to external force, the bending part 11 presses down the moving blade component 3 and moves it downward synchronously along the axial direction of the mesh seat 2. When the external force disappears, under the supporting force of the supporting mechanism 5, the flexible mesh 1 and the moving blade component 3 automatically reset relative to the mesh seat 2. By setting the flexible mesh 1 and the moving blade component 3 to move downward synchronously and reset automatically, the flexible mesh 1 can avoid being torn by the moving blade component 3 when subjected to skin compression, thus ensuring the safety of the moving blade component 3 and extending its service life.

[0038] To ensure that the flexible mesh 1 is positioned at a preset height within the mesh holder 2 during assembly, the supporting force of the top support mechanism 5 is greater than the tensioning force of the tensioning mechanism 6. Setting the supporting force of the top support mechanism 5 to be greater than the tensioning force of the tensioning mechanism 6 ensures that, after assembly, the highest point of the curved portion 11 in the flexible mesh 1 is at the preset height within the mesh holder 2, meaning the highest point of the curved portion 11 of the flexible mesh 1 is at the same horizontal level as the mesh holder 2, improving the overall aesthetics of the shaver head assembly. However, if the tensioning force of the tensioning mechanism 6 is set greater than the supporting force of the top support mechanism 5, the highest point of the curved portion 11 in the flexible mesh 1 may be lower than the upper surface of the mesh holder 2 under the tensioning force of the tensioning mechanism 6, affecting not only the use of the shaver head assembly but also its overall aesthetics. Therefore, in this embodiment, setting the supporting force of the top support mechanism 5 to be greater than the tensioning force of the tensioning mechanism 6 is the optimal implementation.

[0039] In this embodiment, to prevent the curved portion 11 of the flexible mesh 1 from undergoing lateral bulging deformation under skin pressure due to the fixed connection between the two sidewalls of the flexible mesh 1 and the mesh seat 2, the flexible mesh 1 includes a flexible sheet 12 and a rigid plate 13, with the two edges of the sheet 12 fixedly connected to the plate 13 as a single unit. In specific implementation, the two edges of the sheet 12 are riveted to the plate 13 as a single unit. To ensure that the two sidewalls of the curved portion 11 of the flexible mesh 1 are always kept taut, an axial sliding hole 14 is provided on the plate 13 and is detachably and movably connected to the mesh seat 2, so that the flexible mesh 1 is limited relative to the mesh seat 2 in the reciprocating swing direction, and when the flexible mesh 1 is subjected to external force, the sheet 12 and the plate 13 can simultaneously move downward along the axial direction of the mesh seat 2. Only by setting the two sidewalls of the curved portion 11 in the flexible mesh 1 to be movably connected to the mesh seat 2 can the tensioning mechanism 6 use tension force to straighten and tighten the two sidewalls of the curved portion 11 to maintain a taut state.

[0040] An axial sliding hole 14 is provided on the plate 13. By controlling the width of the axial sliding hole 14, the flexible mesh 1 can be limited in the reciprocating swing direction of the moving blade component 3. This prevents the flexible mesh 1 from swinging back and forth simultaneously with the moving blade component 3 while cutting along the flexible mesh 1, thus avoiding the beard from being uncut and causing fuzzing. Secondly, by controlling the length of the axial sliding hole 14 and utilizing both ends of the axial sliding hole 14, the maximum axial downward displacement of the flexible mesh 1 can be achieved, thus limiting the vertical displacement of the flexible mesh 1 and preventing excessive vertical displacement from affecting the beard trimming performance.

[0041] In a specific embodiment, to achieve the movable connection between the flexible mesh 1 and the mesh seat 2, the mesh seat 2 is closed on all sides but open at the top and bottom, forming an installation cavity 21 inside the mesh seat 2, and the moving blade component 3 is placed inside the installation cavity 21. To facilitate the connection between the flexible mesh 1 and the mesh seat 2, hooks 22 are provided on the two opposing inner walls of the installation cavity 21. During assembly, the axial sliding hole 14 is fitted onto the hook 22, allowing the flexible mesh 1 to move downward along the axial direction of the mesh seat 2 when subjected to external force (i.e., skin compression). Furthermore, under the action of the tensioning mechanism 6, it is also convenient to apply a downward pulling force to the two side walls of the curved part 11 in the flexible mesh 1, ensuring that the two side walls of the flexible mesh 1 remain taut in any position, avoiding lateral bulging deformation of the two side walls of the curved part 11 in the flexible mesh 1 after being subjected to force, ensuring the hair cutting performance of the blade assembly and preventing hair jamming and pulling, thus improving the user comfort of the blade assembly. Secondly, when either the upper or lower end of the axial sliding hole 14 abuts against the hook 22, the hook 22 can limit the vertical displacement of the flexible mesh 1, thus preventing excessive vertical displacement from affecting the beard trimming performance or trimming efficiency of the cutter head assembly.

[0042] To ensure sufficient shearing force by maintaining constant contact between the moving blade component 3 and the curved portion 11 of the flexible mesh 1, the top support mechanism 5 consists of a top support spring 51 and a top support base 52, with one end of the moving blade component 3 connected to the top support base 52. In actual production, hinge holes are provided at the center of both sides of the moving blade component 3, and hinge shafts are provided on the top support base 52. The hinge shafts are engaged with the hinge holes, creating a rocker-like structure that allows the two ends of the moving blade component 3 to move axially downwards. This reduces the impact of the two ends of the moving blade component 3 on the two ends of the curved portion 11 of the flexible mesh 1, preventing breakage of the curved portion 11 and extending the service life of the flexible mesh 1. Alternatively, the top support base 52 and the moving blade component 3 can be directly injection molded as a single unit. This embodiment does not impose further limitations and can be customized according to user requirements.

[0043] To facilitate the reciprocating swing of the moving blade component 3 along the curved portion 11 of the flexible mesh 1 by the drive mechanism 4, the other end of the top support base 52 is movably engaged with the drive mechanism 4. A top support spring 51 is placed between the drive mechanism 4 and the top support base 52, ensuring that the elastic force of the top support spring 51 supports the moving blade component 3, maintaining constant contact with the inner surface of the curved portion 11 of the flexible mesh 1. By movably engaging the top support base 52 with the drive mechanism 4, assembly, disassembly, cleaning, and replacement are convenient. Furthermore, when subjected to skin pressure, the flexible mesh 1 and the moving blade component 3 synchronously move downwards along the axial direction of the mesh base 2, preventing the moving blade component 3 from tearing the flexible mesh 1 and extending its service life. In actual production, the drive mechanism 4 also includes a drive shaft 41, which is inserted into the top support base 52 to strengthen the top support base 52 during reciprocating swing and improve its working stability during reciprocating swing cutting.

[0044] In specific implementation, the moving blade component 3 includes a moving blade 31 and a moving blade holder 32. Several moving blades 31 are arranged side-by-side and fixed to the moving blade holder 32, forming a single unit. The moving blade holder 32 is hinged to the top support base 52, causing the moving blade holder 32 and the moving blades 31 to reciprocate along the curved portion 11 of the flexible mesh 1 under the drive of the driving mechanism 4. In actual production, the moving blades 31 are semi-circular in shape, consisting of several pieces arranged side-by-side at intervals within the moving blade holder 32. The semi-circular shape not only ensures cutting strength and sharpness but also maximizes the cutting area during reciprocating cutting. Compared to an inverted n-shaped moving blade, the effective cutting cross-section of the semi-circular moving blade is close to a 180-degree fan, greatly improving the beard trimming efficiency. Of course, the moving blade holder 32 can also be omitted, and the moving blade and moving blade holder 32 can be directly integrated as a single unit to achieve the same beard trimming purpose. The specific choice depends on the user's needs, and this embodiment does not impose further limitations.

[0045] Based on the above technical solutions, this application proposes two embodiments to achieve the tensioning mechanism 6 applying tension force to the side walls of the curved portion 11 in the flexible mesh 1 so that the side walls of the flexible mesh 1 are always kept in a tensioned state.

[0046] Example 1

[0047] like Figure 7 and Figure 12 As shown, the tensioning mechanism 6 includes at least one tension spring 61 that applies downward tension to both sides of the curved portion 11 in the flexible mesh 1, and tension spring seats 62 that fix both ends of the tension spring 61. One tension spring seat 62 is disposed on the plate 13, and the other tension spring seat 62 is disposed on the inner wall of the mesh seat 2 or in the machine body. Both ends of the tension spring 61 are connected to the tension spring seat 62, so that when the flexible mesh 1 is at any axial height position within the mesh seat 2, both sides of the curved portion 11 are in a tensioned state. In a specific implementation, one of the tension spring seats 62 is preferably disposed on the inner wall of the mesh seat 2. In this way, after the tension spring 61 is assembled, the flexible mesh 1, the tensioning mechanism 6, and the mesh seat 2 can form a whole that can be disassembled and assembled synchronously, improving the efficiency of the assembly and disassembly of the cutter head assembly.

[0048] To ensure that both ends of the sidewalls of the curved portion 11 in the flexible mesh 1 are always kept taut, tension spring seats 62 are provided at both ends of the plate 13 and the inner wall of the mesh seat 2, so that each sidewall of the curved portion 11 in the flexible mesh 1 is subjected to downward tension by two tension springs 61, thereby ensuring that each end of the sidewall of the curved portion 11 in the flexible mesh 1 has sufficient tension, ensuring the beard trimming performance and working stability of the flexible mesh 1.

[0049] Example 2

[0050] like Figure 8 and Figure 13 As shown, unlike the previous embodiment where tension springs 61 are used to pull the side walls of the curved portion 11 in the flexible mesh 1 downwards to form tension, this embodiment uses the supporting force of springs to apply tension to the side walls of the curved portion 11 in the flexible mesh 1 from top to bottom. Specifically, the tensioning mechanism 6 includes at least two tension springs 63 that apply downward tension to the side walls of the curved portion 11 in the flexible mesh 1, and four spring seats 64 that fix the two ends of the tension springs 63. Two spring seats 64 are disposed on the support plate 65, and the two ends of the support plate 65 are respectively connected to the plate 13 to form a frame-shaped whole. The other two spring seats 64 are respectively disposed on the two inner side walls of the mesh seat 2. One end of the tension spring 63 abuts against the mesh seat 2, and the other end abuts against the support plate 65, so that the side walls of the curved portion 11 are in a tensioned state when the flexible mesh 1 is at any axial height position within the mesh seat 2.

[0051] By adding a support plate 65 to each end of the two plates 13 and connecting the two ends of the support plate 65 to the plates 13 to form an integral frame, a spring seat 64 is added to each of the support plates 65 at both ends of the frame. One end of the tension spring 63 is fitted onto the spring seat 64, and the other end presses against the spring seat 64 located above the support seat inside the mesh seat 2. At this time, the tension spring 63 will apply a tension force downward, and the support plate 65 will move downward under the action of the tension force. In this way, the plates 13 can pull the two side walls of the curved part 11 in the flexible mesh 1 downward, thereby ensuring that the two side walls of the flexible mesh 1 are always in a taut tension state. This avoids the lateral bulging deformation of the two side walls of the curved part 11 in the flexible mesh 1 when it bears the skin, thus improving the beard trimming performance of the flexible mesh 1.

[0052] Based on the aforementioned blade assembly, this application also proposes a razor that includes the aforementioned blade assembly.

[0053] The above embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A blade assembly, comprising a flexible mesh (1), a mesh holder (2), and a moving blade component (3); the two sides of the flexible mesh (1) are respectively connected to the mesh holder (2), so that a curved portion (11) is formed in the middle of the flexible mesh (1); the moving blade component (3) is placed inside the mesh holder (2) and located below the curved portion (11), and under the drive of the drive mechanism (4), the moving blade component (3) can reciprocate along the flexible mesh (1); characterized in that It also includes a top support mechanism (5) and a tensioning mechanism (6), wherein, The supporting mechanism (5) drives the moving knife component (3) to apply an upward supporting force to the flexible mesh (1), pushing the bent part (11) in the flexible mesh (1) to a predetermined position inside the mesh seat (2); The tensioning mechanism (6) simultaneously applies downward tension to the two side walls of the curved part (11) in the flexible mesh (1), so that the curved part (11) and the moving knife component (3) in the flexible mesh (1) always remain in contact at any axial position in the mesh seat (2), and the two side walls of the curved part (11) in the flexible mesh (1) remain in a tensioned state when the flexible mesh (1) is in any position relative to the mesh seat (2).

2. The cutter head assembly according to claim 1, characterized in that... When the flexible mesh (1) is subjected to external force, the bending part (11) can press down the moving knife component (3) to move downward synchronously along the axial direction of the mesh seat (2), and when the external force disappears, under the support force of the top support mechanism (5), the flexible mesh (1) and the moving knife component (3) automatically reset relative to the mesh seat (2).

3. The cutter head assembly according to claim 1, characterized in that... The supporting force of the supporting mechanism (5) is greater than the tensioning force of the tensioning mechanism (6).

4. The cutter head assembly according to claim 1, characterized in that... The flexible mesh (1) includes a flexible sheet (12) and a rigid plate (13). The two sides of the sheet (12) are fixedly connected to the plate (13) as a whole. An axial sliding hole (14) is provided on the plate (13) and is detachably connected to the mesh seat (2), so that the flexible mesh (1) is limited relative to the mesh seat (2) in the reciprocating swing direction. When the flexible mesh (1) is subjected to external force, the sheet (12) and the plate (13) can be moved downward along the axial direction of the mesh seat (2) simultaneously.

5. The cutter head assembly according to claim 4, characterized in that... The mesh seat (2) is closed on all sides but open at the top and bottom, forming an installation cavity (21) inside the mesh seat (2). Hooks (22) are provided on the two inner walls opposite to each other in the installation cavity (21). The axial sliding hole (14) is fitted on the hook (22) so that the flexible mesh (1) can move downward along the axial direction of the mesh seat (2) when subjected to external force. The upper and lower ends of the axial sliding hole (14) abut against the hook (22) to limit the upper and lower displacement stroke of the flexible mesh (1).

6. The cutter head assembly according to claim 1, characterized in that... The top support mechanism (5) consists of a top support spring (51) and a top support base (52). The moving blade component (3) is connected to one end of the top support base (52), and the other end of the top support base (52) is movably engaged with the drive mechanism (4). The top support spring (51) is placed between the drive mechanism (4) and the top support base (52) so that the elastic force of the top support spring (51) supports the moving blade component (3) so that it always keeps in contact with the inner surface of the curved part (11) of the flexible mesh (1).

7. The cutter head assembly according to claim 6, characterized in that... The moving blade component (3) includes a moving blade (31) and a moving blade holder (32). The moving blade (31) is provided with several blades fixed side by side on the moving blade holder (32) to form an integral part with the moving blade holder (32). The moving blade holder (32) is hinged to the top support base (52) so that the moving blade holder (32) and the moving blade (31) swing back and forth along the curved part (11) of the flexible mesh (1) under the drive of the drive mechanism (4).

8. The cutter head assembly according to claim 1, characterized in that... The tensioning mechanism (6) includes at least one tension spring (61) that applies downward tension to the two side walls of the curved portion (11) in the flexible mesh (1) and tension spring seats (62) that fix the two ends of the tension spring (61). One tension spring seat (62) is disposed on the plate (13), and the other tension spring seat (62) is disposed on the inner wall of the mesh seat (2) or in the machine body. The two ends of the tension spring (61) are respectively connected to the tension spring seat (62) so that the two side walls of the curved portion (11) are in a tensioned state when the flexible mesh (1) is at any axial height position in the mesh seat (2).

9. The cutter head assembly according to claim 1, characterized in that... The tensioning mechanism (6) includes at least two tension springs (63) that apply downward tension to the two side walls of the curved portion (11) in the flexible mesh (1) and four spring seats (64) that fix the two ends of the tension springs (63); wherein, two spring seats (64) are disposed on the support plate (65), and the two ends of the support plate (65) are respectively connected to the plate (13) to form a frame-shaped whole; the other two spring seats (64) are respectively disposed on the two inner side walls of the mesh seat (2), one end of the tension spring (63) abuts against the mesh seat (2), and the other end abuts against the support plate (65), so that when the flexible mesh (1) is at any axial height position in the mesh seat (2), the two side walls of the curved portion (11) are in a tensioned state.

10. A razor, characterized in that... The blade assembly includes any one of claims 1 to 9.

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