Reciprocating shaving head and shaver

Abstract

This invention relates to a cutting blade, a reciprocating shaver head, and a shaver. The key feature is the presence of a U-shaped groove along the straight edge of the substrate, forming support feet on both sides. At least one ventilation hole penetrating the substrate is located between the curved cutting edge and the U-shaped groove. The beneficial effects of this invention are: the U-shaped groove and ventilation hole on the substrate reduce the surface area of ​​the substrate and shorten the groove depth between adjacent cutting blades; secondly, the ventilation hole allows air to be compressed and formed by the airflow when each cutting blade is driven by the shaver's motor to reciprocate along the stationary blade mesh. After the beard is cut by the cutting blade, the combined effect of vibration and airflow overcomes the stickiness of sebum secreted by the skin, preventing fine beard hairs from adhering to the sidewalls of the cutting blades due to the stickiness of the sebum, accelerating the removal of fine beard hairs from the grooves, improving the efficiency of hair removal, and preventing the grooves from becoming clogged when the vibration generated by the reciprocating movement of the cutting blades is weak.

Description

Technical Field

[0001] This invention relates to a cutting blade for trimming beards, and more specifically to a reciprocating razor head and razor, primarily for use in personal care products such as razors or hair removal devices. Background Technology

[0002] The applicant filed an application on March 29, 2021, entitled "A Moving Blade for Preventing Clogged Grooves," patent number 2021103339718, publication number CN113001596A. The technical solution of this moving blade is to create notches on each blade. These notches shorten the groove depth between adjacent blades, reducing the time it takes for hair clippings to pass through the grooves and thus accelerating their removal, thereby achieving the technical objective of preventing clogging. This structure primarily relies on the vibration generated by the shaver motor driving the moving blades to overcome the stickiness of sebum and prevent hair clippings from adhering to the sidewalls of the blades and clogging the grooves. While notches on the blades shorten the groove depth between adjacent blades and the vibration generated by the reciprocating motion of the moving blades prevents hair clippings from adhering to the sidewalls of the grooves, this method effectively prevents clogging. However, the intensity of the vibration generated by the reciprocating swing of the blade is affected by the motor speed, which in turn is affected by changes in the battery charge. When the battery charge decreases, the battery voltage also decreases, causing the motor speed to decrease as well. Consequently, the vibration generated by the reciprocating swing of the blade weakens, making it impossible to shake off the hair clippings adhering to the side wall of the blade groove and discharge them from the blade groove. This reduces the efficiency of removing hair clippings from the blade groove and may even clog the blade groove. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a reciprocating shaver head and shaver. By adding a U-groove and a ventilation hole to the cutting blade, the U-groove shortens the groove depth between adjacent cutting blades. At the same time, when the vibration is reduced, the airflow through the ventilation hole can accelerate the discharge of hair clippings from the groove, improve the efficiency of hair clipping discharge, and ensure the hair trimming performance and working stability of the shaver head.

[0004] To solve the above technical problems, the present invention adopts a reciprocating shaver head, comprising a plurality of cutting blades and a movable blade holder for fixing the cutting blades. The cutting blades are arranged at intervals along the length of the movable blade holder and are fixed on the movable blade holder as a whole, so that a groove is formed between adjacent cutting blades. A hair-removing groove is disposed in the movable blade holder. When viewed from the orthographic projection direction of either side of the movable blade holder, the hair-removing groove is vertically continuous, and the grooves between each cutting blade are connected to the hair-removing groove. When viewed from the orthographic projection direction of either end face of the movable blade holder, the inverted U-shaped groove in each cutting blade combines with the hair-removing groove to form an airflow channel penetrating both ends of the movable blade holder.

[0005] Preferably, the moving blade holder includes two side plates spaced apart, with a wicking groove formed between the two side plates. The extension blades in each cutting blade are inserted into the corresponding side plates and connected and fixed together by limiting holes, so that the base plate in each cutting blade is above the side plate. The width of the wicking groove matches the width of the inverted U-groove. Multiple spaced connecting pieces are provided between the lower ends of the two side plates to connect the two side plates together.

[0006] Preferably, baffles are provided at both ends of the two side plates, and each baffle has a through hole that connects to the shaving groove to form an inlet and outlet of an airflow channel. The cross-sectional area of ​​the through hole is not less than 0.5 mm². 2 .

[0007] Preferably, the cutting blade includes a substrate with an arc-shaped edge and a straight edge, an arc-shaped cutting edge is formed at the edge of the arc-shaped edge of the substrate; a U-shaped groove is provided on the straight edge of the substrate to form support feet on both sides of the substrate, and at least one ventilation hole penetrating the substrate is provided between the arc-shaped cutting edge and the U-shaped groove.

[0008] Preferably, there are multiple ventilation holes, which are arranged in arcs or straight lines with the same or different diameters between the arc-shaped cutting edge and the U-groove, and each ventilation hole does not extend beyond the two ends of the arc-shaped cutting edge.

[0009] Preferably, the substrate is semi-circular, and an integral extension piece is provided below the support foot of the substrate to make the substrate as a whole inverted U-shape. Each extension piece is provided with a limiting hole.

[0010] Preferably, with the highest point of the arc edge of the substrate as a reference, the distance between the bottom of the U-groove and the highest point of the arc edge is H, where H is greater than or equal to one-quarter of the substrate diameter.

[0011] Preferably, inwardly recessed triangular grooves are provided at the edges of the arc-shaped edges on both sides of the substrate, so that the edges of the arc-shaped edges on both sides of the substrate form acute angles to form arc-shaped cutting edges, and the arc length of the arc-shaped cutting edges is less than 150 degrees.

[0012] Preferably, the base plate diameter of at least one of the cutting blades is greater than the width of the two side plates, so that the outer surfaces of the two extension blades extend beyond the outer surfaces of the two side plates.

[0013] Based on the aforementioned shaving head, a shaving razor solution is also proposed, which includes the aforementioned reciprocating shaving head and the aforementioned cutting blade.

[0014] The beneficial effects of this invention are:

[0015] 1. An inverted U-groove is provided on the straight edge of the substrate to form support feet on both sides of the substrate. By using the inverted U-groove on the substrate, the surface area of ​​the substrate is reduced. After the cutting blades are assembled, the depth of the groove between adjacent cutting blades will be shortened. At the same time, driven by the motor inside the shaver, the vibration at the arc-shaped blade edge on the substrate is relatively strong. When the beard is cut by the arc-shaped blade edge of the static net, the time for the beard hair to pass through the groove can be greatly shortened, and the beard hair can be dropped from the groove into the hair removal groove and discharged more quickly. This prevents the beard hair from clogging the groove and affecting the hair trimming performance and trimming efficiency of the cutting blade.

[0016] 2. At least one ventilation hole penetrating the substrate is provided between the curved blade edge and the U-groove. When each cutting blade is driven by the motor of the shaver to swing back and forth along the stationary blade net, each cutting blade will compress air to form an airflow. When the motor speed decreases and the vibration generated by the reciprocating swing of the cutting blade is weakened to the point of not dislodging the stubble, the airflow can pass through the ventilation hole provided between the curved blade edge and the U-groove along the reciprocating swing direction of the cutting blade. This creates an air vortex in the groove between adjacent cutting blades, applying additional force to the stubble to overcome the stickiness of the sebum and expel the stubble from the groove, improving the efficiency of stubble removal and preventing the groove from being blocked when the vibration generated by the reciprocating swing of the cutting blade is weak. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the cutting blade according to an embodiment of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the cutting blade according to an embodiment of the present invention.

[0019] Figure 3 This is a perspective structural diagram of the first embodiment of the reciprocating shaver head of the present invention.

[0020] Figure 4 This is a perspective structural diagram of a second embodiment of the reciprocating shaver head of the present invention.

[0021] Figure 5 This is a cross-sectional view of the assembly structure of the cutting blade in an embodiment of the present invention.

[0022] Figure 6 This is a cross-sectional view of the assembly structure of the moving tool holder in an embodiment of the present invention.

[0023] Figure 7 This is a bottom perspective view of the second embodiment of the moving tool holder in this invention.

[0024] Figure 8 This is a top perspective view of the second embodiment of the moving tool holder in this invention. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-8 Further explanation of the embodiments of the present invention:

[0026] like Figures 1-2 As shown, the present invention is a cutting blade 1, which includes a substrate 11 having an arc-shaped edge 111 and a straight edge 112. The arc-shaped edge 111 of the substrate 11 is attached to the inner surface of the static blade net (not shown in the figure). During shaving, the arc-shaped cutting edge 12 formed at the edge of the arc-shaped edge 111 of the substrate 11 is used to cut the beard that extends into the static blade net, thereby achieving the purpose of hair trimming or shaving.

[0027] Because hair will more or less adhere to the oil secreted by human skin, and oil has a certain stickiness, and at the same time, the weight of the beard hair is relatively light, after the beard hair is cut by the curved blade 12 and enters the groove 3, it is very easy to stick to the side wall of the groove 3 due to the stickiness of the oil. At the same time, the beard hair has different shapes, mostly curly, and the beard hair that is shaved later will be piled on the beard hair that is stuck to the side wall of the groove 3, thus causing the groove 3 to become blocked. To this end, an inverted U-groove 13 is provided on the straight edge 112 of the substrate 11 to form support feet 14 on both sides of the substrate 11. By using the inverted U-groove 13 on the substrate 11, the surface area of ​​the substrate 11 is relatively reduced. After the cutting blades 1 are assembled, the depth of the groove 3 between adjacent cutting blades 1 will be shortened. At the same time, under the drive of the motor in the shaver, the vibration at the arc-shaped blade 12 on the substrate 11 is relatively strong. When the beard is cut by the arc-shaped blade 12 of the static blade net, the time for the beard hair to pass through the groove 3 can be greatly shortened, and the beard hair can be dropped from the groove 3 into the hair removal groove 22 and discharged faster, thereby preventing the beard hair from clogging the groove 3 and affecting the hair trimming performance and trimming efficiency of the cutting blades 1.

[0028] Secondly, as the battery power in the shaver decreases, the motor speed also decreases (when the battery power decreases by less than 50%, the battery voltage decreases accordingly, which in turn reduces the motor's output power and slows down the motor speed). Consequently, the vibration generated by the reciprocating swing of the cutting blade 1 weakens, making it impossible to dislodge the stubble adhering to the sidewall of the cutting blade 1 from the groove 3. This allows the stubble to easily adhere to the sidewall of the cutting blade 1 and clog the groove 3 due to the adhesive effect of sebum. Therefore, at least one ventilation hole 15 penetrating the substrate 11 is provided between the arc-shaped cutting edge 12 and the U-shaped groove 13. When each cutting blade 1 is driven by the shaver's motor to reciprocate along the stationary blade mesh, each cutting blade 1 compresses air to form an airflow. When the motor speed decreases and the vibration generated by the reciprocating swing of the cutting blade 1 is weakened to the point that it is insufficient to shake off the stubble, the airflow can pass through the ventilation hole 15 located between the arc-shaped blade edge 12 and the U-shaped groove 13 along the reciprocating swing direction of the cutting blade 1. This creates an air vortex in the groove 3 between adjacent cutting blades 1, which applies additional force to the stubble to overcome the stickiness of the grease and discharge the stubble from the groove 3, improving the efficiency of stubble discharge and preventing the groove 3 from becoming blocked when the vibration generated by the reciprocating swing of the cutting blade 1 is weak.

[0029] In actual production, multiple ventilation holes 15 are provided. The ventilation holes 15 can be arranged in an arc (i.e., with reference to the arc segment of the arc-shaped cutting edge 12) or a horizontal straight line with the same or different diameters between the arc-shaped cutting edge 12 and the U-groove 13. The best implementation is that multiple ventilation holes 15 are located within the arc segment of the arc-shaped cutting edge 12 and do not extend beyond the arc segment of the arc-shaped cutting edge 12. In this way, when the beard inserted into the stationary blade mesh is cut in the arc-shaped cutting edge 12, the beard fragments can be immediately dispersed and discharged from the blade groove 3 by the formed vortex, thus avoiding beard fragments from adhering to the side wall of the cutting blade 1 to the greatest extent.

[0030] To facilitate the production and assembly of the cutting blade 1, the substrate 11 is designed as a semi-circle. When the cutting blade 1 is assembled, the semi-circular substrate 11 fits better with the inner surface of the U-shaped static blade mesh, and also allows the U-shaped sides of the static blade mesh to have hair trimming capabilities, increasing the hair intake and trimming area of ​​the static blade mesh. Of course, if the curvature of the static blade mesh is large, the substrate 11 can also be designed as a smaller curvature to match it. The specific setting can be set according to the actual curvature of the static blade mesh. An inverted U-groove 13 is provided in the substrate 11 so that support feet 14 are formed on both sides of the substrate 11. By providing the inverted U-groove 13, the depth of the groove 3 between adjacent cutting blades 1 can be greatly shortened, reducing the time for hair clippings to pass through the groove 3 and accelerating the removal of hair clippings. However, from the perspective of the desired effect, the inverted U-groove 13 can also be changed to other shapes, such as conical, trumpet-shaped, or trapezoidal, depending on the actual needs. This embodiment does not further limit this.

[0031] In some embodiments, the substrate 11 is designed as a semi-circle. Due to the size limitation of the cutting blade 1, if the U-groove 13 is too deep, the strength of the substrate 11 will be relatively weakened. During hair trimming, the substrate 11 will easily bend and deform, reducing the hair trimming performance. If the U-groove 13 is too shallow, it will not only fail to shorten the blade groove 3, but also fail to ensure the installation firmness of the cutting blade 1 during assembly. Therefore, to ensure the working strength of the cutting blade 1 and facilitate production assembly, an integral extension piece 16 is provided on the support feet 14 on both sides of the U-groove 13 of the substrate 11. During assembly, the extension piece 16 can be inserted into the moving blade holder 2, at least placing most of the substrate 11 outside the moving blade holder 2. This not only ensures the connection firmness between the cutting blade 1 and the moving blade holder 2, but also minimizes the depth of the blade groove 3. Secondly, the substrate 11 is mostly located outside the moving blade holder 2. When the cutting blade 1 and the stationary blade mesh work together to cut the hair, the substrate 11 can produce a back-and-forth vibration effect, making the sound produced during hair trimming crisper and improving the user's experience. In order to ensure the firmness of the connection between the extension piece 16 and the moving blade holder 2, each extension piece 16 is provided with a limiting hole 17.

[0032] Because the depth of the groove 3 between adjacent cutting blades 1 is shortened by adding an inverted U-groove 13 to the substrate 11, in order to balance the depth of the groove 3 and the working intensity of the cutting blade 1, the distance between the bottom of the inverted U-groove 13 and the highest point of the arc edge 111 of the substrate 11 is H, with H being greater than or equal to one-quarter of the diameter of the substrate 11. If the value of H is too large, the depth of the inverted U-groove 13 will be relatively increased, which will undoubtedly reduce the overall working intensity of the cutting blade 1. If the value of H is too small, the depth of the inverted U-groove 13 will be relatively shortened, and the technical purpose of accelerating the discharge of stubble from the groove 3 cannot be achieved. Therefore, the implementation method of this embodiment is the preferred embodiment.

[0033] When trimming beard hair, the cutting blade 1 utilizes the arc-shaped cutting edges 12 located on both sides of the arc-shaped edges 111 of the base plate 11 to engage with the inner surface of the stationary blade mesh. To improve the hair trimming performance of the cutting blade 1, inwardly recessed triangular grooves are provided at the edges of the arc-shaped edges 111 on both sides of the base plate 11, forming acute angles at the edges of the arc-shaped edges 111 on both sides of the base plate 11 to create arc-shaped cutting edges 12, thereby improving the hair trimming performance of the cutting blade 1. Of course, the triangular grooves can also be trapezoidal in shape, as long as the edges of the arc-shaped edges 111 on both sides of the base plate 11 form acute angles to create arc-shaped cutting edges 12, the same purpose can be achieved. The specific settings can be customized according to user needs. To improve hair trimming efficiency, the arc length S of the curved blade 12 is less than 150 degrees, meaning the angle formed by the extended lines of the two ends of the curved blade 12 is less than 150 degrees. Since the curved edge 111 of the cutting blade 1 fits against the inner surface of the stationary blade mesh after bending, the larger the arc length of the curved blade 12, the larger the area covered by the stationary blade mesh when the cutting blade 1 swings back and forth along its inner surface. This increases the hair trimming range and improves efficiency. However, due to limitations in the installation structure, the stationary blade mesh often only contacts the skin in the central area of ​​its curved portion, while the sides are easily obstructed by other blade groups, hindering hair entry. Therefore, the arc length of the curved blade 12 can be adjusted according to actual conditions; this embodiment does not impose further limitations.

[0034] Based on the aforementioned cutting blade 1, the applicant further proposes a reciprocating razor head, comprising several of the aforementioned cutting blades 1 and a movable blade holder 2 for fixing the cutting blades 1. During production and assembly, the extension pieces 16 of each cutting blade 1 are inserted into the movable blade holder 2 and fixedly connected to it to form a single unit. To facilitate the removal of cut stubble, the cutting blades 1 are arranged at intervals along the length of the movable blade, forming grooves 3 between adjacent cutting blades 1. The cut stubble falls into the grooves 3 and is then discharged. Because an inverted U-groove 13 is provided in each cutting blade 1, the surface area of ​​each cutting blade 1 is correspondingly reduced. After the grooves 3 are formed between adjacent cutting blades 1, the depth of the grooves 3 is also shortened due to the influence of the inverted U-groove 13. When the cutting blade 1, in conjunction with the stationary blade screen, cuts the beard hairs that extend into the stationary blade screen, the time that the beard hairs spend passing through the blade groove 3 is reduced. Under the combined action of vibration (when the motor drives the moving blade holder 2 to swing back and forth, the moving blade holder 2 and each cutting blade 1 mounted on the moving blade holder 2 will vibrate, and the intensity of the vibration will decrease as the motor speed decreases) and airflow (when the motor drives the moving blade holder 2 to swing back and forth, each cutting blade 1 will squeeze air in the swing direction, forming an airflow inside the blade head), the stickiness of the skin's secreted oil can be effectively overcome, preventing the beard hairs from adhering to the side wall of the cutting blade 1 under the sticky force of the oil, and accelerating their discharge from the blade groove 3, preventing the blade groove 3 from being blocked by beard hairs and affecting the beard trimming performance.

[0035] To facilitate the removal of stubble from the shaving head, a stubble-removing groove 22 is provided in the moving blade holder 2. The stubble-removing groove 22 is vertically continuous when viewed from the orthographic projection direction of either side of the moving blade holder 2, and the grooves 3 between each cutting blade 1 are connected to the stubble-removing groove 22. By providing the stubble-removing groove 22 in the moving blade holder 2, the working strength of the moving blade holder 2 can be effectively guaranteed while reducing the material cost of the moving blade holder 2. After the stubble enters the stubble-removing groove 22 from the groove 3, it can fall from the stubble-removing groove 22 into the temporary storage cavity enclosed between the reciprocating shaving head and the shaving body (not shown in the figure). After shaving, the reciprocating shaving head can be removed from the shaving body to clean up the stubble. Secondly, viewed from the orthographic projection direction of either end face of the moving blade holder 2, the inverted U-groove 13 in each cutting blade 1 and the shaving groove 22 combine to form an airflow channel 4 that runs through both ends of the moving blade holder 2. By connecting the inverted U-groove 13 in each cutting blade 1 with the shaving groove 22 to form an airflow channel 4 that runs through both ends of the moving blade holder 2, when the motor inside the shaver drives the moving blade holder 2 to swing back and forth, each cutting blade 1 can compress air to make the airflow enter from one end of the moving blade holder 2 and exit from the opposite end, thereby accelerating the falling of the stubble in the blade groove 3 into the shaving groove 22, and then discharging it through the shaving groove 22 into the temporary storage cavity enclosed between the reciprocating shaver head and the shaver body for temporary storage, thus preventing the stubble from clogging the blade groove 3 and affecting the beard trimming efficiency of the reciprocating shaver head.

[0036] To facilitate the production and processing of the moving blade holder 2 and the assembly of the cutting blades 1, the moving blade holder 2 includes two spaced-apart side plates 21, with a beard trimming groove 22 formed between the two side plates 21. The extension pieces 16 of each cutting blade 1 are inserted into the corresponding side plates 21 and connected and fixed together by limiting holes 17, so that the base piece 11 of each cutting blade 1 is above the side plate 21. The width of the beard trimming groove 22 matches the width of the inverted U-groove 13. By spaced-aparting the two side plates 21 to form the beard trimming groove 22, when the extension pieces 16 of each cutting blade 1 are inserted into the corresponding side plate 21 and connected to the side plate 21 together, most of the base piece 11 of the cutting blade 1 can be above the side plate 21, increasing the height of the cutting blades 1 above the moving blade holder 2. This not only allows the cutting blades 1 to expand the cross-section covering the stationary blade mesh when reciprocating and oscillating, improving the beard trimming efficiency, but also increases the back-and-forth vibration of the base piece 11 after the cutting blades 1 cut the beard, producing a crisper sound and improving the user experience. When the beard hairs are cut off by the cutting blade 1 and fall into the blade groove 3, the hair clippings can quickly enter the hair removal groove 22 from the blade groove 3 under the combined action of the vibration of the cutting blade 1 and the airflow, and are discharged through the hair removal groove 22, thereby preventing the hair clippings from clogging the blade groove 3 and ensuring the working performance of the reciprocating shaver head. To improve the working strength of the moving blade holder 2, multiple spaced connecting pieces 23 are provided between the lower ends of the two side plates 21 to connect the two side plates 21 into one piece. In the actual production process, each cutting blade 1 is integrally formed with the side plate 21 through secondary injection molding, that is, the extension piece 16 in the cutting blade 1 is placed in the injection mold, so that each extension piece 16 is connected and fixed to the side plate 21. At the same time, since each extension piece 16 is provided with a limiting hole 17, when the extension piece 16 is integrally formed with the side plate 21, the limiting hole 17 can effectively prevent the extension piece 16 in the cutting blade 1 from shifting, which not only facilitates production and processing, but also improves the connection firmness between each cutting blade 1 and the moving blade holder 2.

[0037] To ensure the safety of the outermost cutting blades 1 at both ends of the moving blade holder 2, baffles 24 are provided at both ends of the two side plates 21. These baffles 24 protect the outermost cutting blades 1 of the moving blade holder 2, improving their safety and preventing damage from external contact. To ensure smooth airflow in the airflow channel 4 within the moving blade holder 2, each baffle 24 has a through hole 25 connected to the shaving groove 22, forming the inlet and outlet of the airflow channel 4. The cross-sectional area of ​​this through hole 25 is not less than 0.5 mm². 2 If the cross-sectional area of ​​the through hole 25 is too small, it will affect the airflow in the airflow channel 4 inside the moving blade holder 2, and will not be able to achieve the purpose of accelerating the discharge of stubble from the blade groove 3. This is especially true when the battery power in the shaver body decreases, causing the motor speed to decrease, which in turn weakens the vibration of the moving blade holder 2 and each cutting blade 1.

[0038] To facilitate the integral molding of each cutting blade 1 and the moving blade holder 2, the diameter of the base plate 11 in at least one of the cutting blades 1 is larger than the width of the two side plates 21, so that the outer side of the two extension pieces 16 extends beyond the outer side of the two side plates 21. In actual production, the diameter of the base plate 11 in each cutting blade 1 is larger than the width of the two sides, so that the outer side of the extension piece 16 in the cutting blade 1 extends beyond the outer side of the two side plates 21. In this way, during secondary injection molding, the part of the extension piece 16 protruding from the surface of the side plate 21 can be used for positioning, ensuring the stability of each cutting blade 1 during secondary injection molding, and ensuring that each cutting blade 1 is equidistantly arranged on the side plate 21 of the moving blade holder 2.

[0039] Based on the aforementioned reciprocating shaver head, the applicant further proposes a shaver technical solution, which includes the aforementioned reciprocating shaver head and the aforementioned cutting blade.

[0040] 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 reciprocating shaver head, characterized in that... It includes several cutting blades (1) and a movable blade holder (2) for fixing the cutting blades (1). Each cutting blade (1) is arranged at intervals along the length of the movable blade holder (2) and fixed on the movable blade holder (2) and connected as a whole, so that the adjacent cutting blades (1) form a blade groove (3) respectively. The whisker groove (22) is set in the movable blade holder (2). When viewed from the orthographic projection direction of any side of the movable blade holder (2), the whisker groove (22) is vertically connected, and the blade grooves (3) between each cutting blade (1) are connected to the whisker groove (22) respectively. When viewed from the orthographic projection direction of any end face of the two ends of the movable blade holder (2), the inverted U groove (13) in each cutting blade (1) and the whisker groove (22) combine to form an airflow channel (4) that runs through both ends of the movable blade holder (2).

2. The reciprocating shaver head according to claim 1, characterized in that... The moving blade holder (2) includes two side plates (21) spaced apart, and a wicking groove (22) is formed between the two side plates (21). The extension pieces (16) in each cutting blade (1) are inserted into the corresponding side plates (21) and connected and fixed together by limiting holes (17), so that the base pieces (11) in each cutting blade (1) are above the side plates (21). The width of the wicking groove (22) matches the width of the inverted U groove (13). Multiple connecting pieces (23) spaced apart are provided between the lower ends of the two side plates (21) to connect the two side plates (21) together.

3. The reciprocating shaver head according to claim 2, characterized in that... Baffles (24) are provided at both ends of the two side plates (21). Each baffle (24) has a through hole (25) that connects to the wicking groove (22) to form the inlet and outlet of the airflow channel (4). The cross-sectional area of ​​the through hole (25) is not less than 0.5 mm. 2 .

4. The reciprocating shaver head according to any one of claims 1 to 3, characterized in that... The cutting blade includes a substrate (11) having an arc-shaped edge (111) and a straight edge (112), and an arc-shaped cutting edge (12) is formed at the edge of the arc-shaped edge (111) of the substrate (11); characterized in that an inverted U-groove (13) is provided on the straight edge (112) of the substrate (11) to form support feet (14) on both sides of the substrate (11), and at least one ventilation hole (15) penetrating the substrate (11) is provided between the arc-shaped cutting edge (12) and the inverted U-groove (13).

5. The reciprocating shaver head according to claim 4, characterized in that... Multiple ventilation holes (15) are provided, arranged in arcs or straight lines with the same or different diameters between the arc-shaped cutting edge (12) and the U-groove (13), and each ventilation hole (15) does not extend beyond the two ends of the arc-shaped cutting edge (12).

6. The reciprocating shaver head according to claim 4, characterized in that... The substrate (11) is semi-circular. An integral extension piece (16) is provided below the support foot (14) of the substrate (11) to make the substrate (11) as a whole inverted U shape. A limiting hole (17) is provided on each extension piece (16).

7. The reciprocating shaver head according to claim 4, characterized in that... With the highest point of the arc edge (111) of the substrate (11) as the reference, the distance between the bottom of the U-groove (13) and the highest point of the arc edge (111) is H, where H is greater than or equal to one-quarter of the diameter of the substrate (11).

8. The reciprocating shaver head according to claim 4, characterized in that... An inwardly recessed triangular groove is provided at the edge of the arc-shaped edge (111) on both sides of the substrate (11), so that the edge of the arc-shaped edge (111) on both sides of the substrate (11) forms an acute angle to form an arc-shaped cutting edge (12), and the arc length S of the arc-shaped cutting edge (12) is less than 150 degrees.

9. The reciprocating shaver head according to claim 4, characterized in that... At least one of the cutting blades (1) has a substrate (11) with a diameter greater than the width of the two side plates (21), so that the outer surfaces of the two extension blades (16) extend beyond the outer surfaces of the two side plates (21).

10. A razor, characterized in that... The reciprocating shaver head includes any one of the above 1 to 9.

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