Shaving head with pre-hairing function and reciprocating shaver

Abstract

The present invention relates to a razor head with a pre-hair pulling function and a reciprocating razor, which is characterized in that an elastic sheet is also provided on the moving blade holder, the elastic sheet is placed between two adjacent moving blades and connected to the moving blade holder, and the distance between the elastic sheet and the moving blade is less than the single-sided swing distance of the moving blade holder; the projection edge line of the upper end of the elastic sheet overlaps the projection edge line of the upper end of the moving blade when viewed from the swinging direction, and the upper end of the elastic sheet and the upper end of the moving blade are respectively in contact with the inner end surface of the static blade net, and arc angles are set on both sides of the upper end of the elastic sheet. The beneficial effect of the present invention is that an elastic sheet with an arc angle is added between two adjacent moving blades, and the beard can be clamped by the elastic sheet force and the inner end surface of the static blade net to pull the root of the beard out of the skin surface as much as possible. Then, when the moving blade passes through the beard inlet hole on the static blade net, the beard will be directly cut off, and the root of the beard will automatically retract into the pores in the skin under the resilience of the skin, so that the root of the beard will not be exposed outside the skin, thereby improving the trimming effect of the beard.

Description

Technical Field

[0001] The invention relates to a beard trimming device, and more particularly to a razor head and a reciprocating razor capable of pulling beard out of hair follicles in advance. Background Art

[0002] The existing reciprocating blade heads used in shavers basically have a moving blade arranged inside a static blade net, and the blade edge of the moving blade is fitted with the bottom end surface of the static blade net, and the driving mechanism in the body drives the moving blade to swing back and forth along the bottom end surface of the static blade net to trim and shave the beard. Although this structure can trim the beard, it also makes the remaining roots of the beard on the skin surface longer. In order to avoid shortening the residual length of the beard roots as much as possible, existing shaver manufacturers all achieve this by reducing the thickness of the static blade net. Although reducing the thickness of the static blade net can shorten the remaining length of the beard roots on the skin surface, reducing the thickness not only increases the difficulty of manufacturing the static blade net and makes the beard inlet hole of the static blade net easy to break and damage, shortening the service life of the static blade net; moreover, the thin static blade net is also very easy to cause the moving blade to cut the skin when in use. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a razor head with a pre-hair pulling function and a reciprocating razor, by adding an elastic sheet to the razor head, so that before the moving blade trims the beard during the shaving process, the elastic sheet cooperates with the static blade net to pre-pull the beard, so that the beard is stretched out of the hair follicle as much as possible before the moving blade trims the beard, and the beard trimming effect can be improved without reducing the thickness of the static blade net, and the thinner static blade net is used to effectively avoid the beard inlet hole being broken and the service life of the static blade net being shortened and the skin being cut, thereby improving the safety of the razor.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is a razor head with a pre-hair pulling function, including a static blade net and a dynamic blade, the dynamic blade is placed in the static blade net and fits with the inner end surface of the static blade net, and the dynamic blade is fixed on the dynamic blade holder; an elastic sheet is also provided on the dynamic blade holder, and the elastic sheet is placed between two adjacent dynamic blades and connected to the dynamic blade holder to swing synchronously with the dynamic blade in the same direction, and the distance L1 between the elastic sheet and the dynamic blade is less than the unilateral swing distance of the dynamic blade holder; the projected edge line of the upper end of the elastic sheet overlaps with the projected edge line of the upper end of the dynamic blade when viewed from the swinging direction, and the upper end of the elastic sheet and the upper end of the dynamic blade are respectively fit with the inner end surface of the static blade net and arc angles are set on both sides of the upper end of the elastic sheet.

[0005] Preferably, the distance L1 between the elastic sheet and the adjacent movable blade is between 0.3 mm and 1.2 mm.

[0006] Preferably, the thickness H of the elastic sheet is between 0.05 mm and 0.3 mm.

[0007] Preferably, arc angles of R < 0.1 mm are respectively provided on both sides of the upper end of the elastic sheet.

[0008] Preferably, the elastic sheet includes an arched portion and an inserting portion, the inserting portions are arranged on both sides of the arched portion and connected to the moving tool holder; the arc shape of the arched portion matches the arc shape of the static knife net and fits with the inner end surface of the static knife net; the height of the arched portion is not greater than half of the outer diameter of the arched portion.

[0009] Preferably, the plug-in portion is integrally formed with the movable tool holder by integral injection molding.

[0010] Preferably, the plug-in portion is connected and fixed to the movable knife holder so as to float up and down, and under the action of the elastic member, the arched portion is always in contact with the inner end surface of the static knife net.

[0011] Preferably, the movable blade is composed of a plurality of independent metal substrates, each of which is fixedly installed on the movable blade holder at intervals, and the elastic sheet is placed between two adjacent metal substrates.

[0012] Preferably, the movable blade includes a plate body, and a plurality of whisker removal holes are provided on the plate body to form a plurality of cutting teeth on the plate body, and the two sides of the plate body are respectively clamped and fixed to the two sides of the movable blade holder; the elastic sheet is fixed on the movable blade holder and is located in the whisker removal holes.

[0013] On the basis of the above technical solution, the applicant also proposed a technical solution of a reciprocating shaver, which includes the above-mentioned shaver head with pre-hair pulling function.

[0014] The beneficial effect of the present invention is that an elastic sheet with a circular arc angle is added between two adjacent moving blades, and the distance between the elastic sheet and the moving blade is smaller than the unilateral swing distance of the moving blade holder, and at the same time, the upper end of the elastic sheet and the upper end of the moving blade are respectively in contact with the inner end surface of the static blade net. When the moving blade holder is driven by the driving mechanism to swing back and forth, the moving blade and the elastic sheet will move back and forth synchronously and cooperate with the inner end surface of the static blade net to clamp the beard and pull the root of the beard out of the skin surface as much as possible. Then, when the moving blade passes through the beard inlet hole on the static blade net, the beard will be directly cut off, and the root of the beard will automatically retract into the pores in the skin under the resilience of the skin, so that the root of the beard will not be exposed outside the skin, thereby improving the trimming effect of the beard. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A cross-sectional assembly diagram of a razor head with a pre-hair pulling function according to an embodiment of the present invention

[0016] Figure 2 A three-dimensional structural diagram of an elastic sheet in an embodiment of the present invention

[0017] Figure 3 A partial enlarged view of the elastic sheet in the embodiment of the present invention

[0018] Figure 4 A three-dimensional structural diagram of a moving blade in an embodiment of the present invention

[0019] Figure 5 A three-dimensional diagram of the assembly of the elastic sheet and the movable tool holder in an embodiment of the present invention DETAILED DESCRIPTION

[0020] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0021] like Figure 1-5 As shown, the present invention is a razor head with a pre-hair pulling function, comprising a stationary blade net 1 and a movable blade 2, wherein the movable blade 2 is placed in the stationary blade net 1 and fits with the inner end surface of the stationary blade net 1, and the movable blade 2 is fixed on a movable blade holder 3; an elastic sheet 4 is also provided on the movable blade holder 3, wherein the elastic sheet 4 is placed between two adjacent movable blades 2 and connected to the movable blade holder 3, and a distance L1 between the elastic sheet 4 and the movable blade 2 is smaller than a single-sided swing distance of the movable blade holder 3; viewed from the swinging direction, the projected edge line of the upper end of the elastic sheet 4 overlaps with the projected edge line of the upper end of the movable blade 2, and the upper ends of the elastic sheet 4 and the movable blade 2 fit with the inner end surface of the stationary blade net 1 respectively, and arc angles 41 are provided on both sides of the upper end of the elastic sheet 4. An elastic sheet 4 is added between two adjacent moving blades 2, and the distance L1 between the elastic sheet 4 and the moving blade 2 is smaller than the single-side swing distance of the moving blade holder 3, and the projection edge line of the elastic sheet 4 overlaps with the projection edge line of the moving blade 2 and contacts the inner end surface of the static blade net 1 respectively. When the moving blade holder 3 swings back and forth driven by the driving mechanism, the moving blade 2 and the elastic sheet 4 will reciprocate synchronously. After the beard enters the static blade net 1, two situations will occur:

[0022] First, the beard first contacts the elastic sheet 4 after passing through the beard inlet hole on the static blade net 1. Since the elastic sheet 4 is provided with arc angles 41 on both sides of the end portion contacting the inner end surface of the static blade net 1, the elastic sheet 4 does not have the ability to trim hair. The elastic sheet 4 can only push the beard to move along the inner end surface of the static blade net 1 in the swinging direction. Affected by the diameter of the beard, when the elastic sheet 4 moves, the beard placed between the elastic sheet 4 and the static blade net 1 will also move with it, so that the root of the beard can be pulled out of the skin surface as much as possible. Then, when the moving blade 2 passes through the beard inlet hole on the static blade net 1, it will directly cut off the beard, and the root of the beard will automatically retract into the pores in the skin under the resilience of the skin, so that the root of the beard will not be exposed outside the skin, improving the trimming effect of the beard.

[0023] The second is that the beard first contacts the moving blade 2 after passing through the beard inlet hole on the static blade net 1, so that when the moving blade holder 3 swings back and forth, the moving blade 2 will directly cut off the beard when passing through the beard inlet hole of the static blade net 1, but the remaining length of the beard root will be relatively long. Since the swing frequency of the moving blade holder 3 is as high as thousands or even tens of thousands of times per minute, when the beard first contacts the moving blade 2 and is cut off, when the moving blade holder 3 swings in the opposite direction, the elastic sheet 4 can repeat the working method of the first case to pull out the remaining beard root on the skin surface and be cut off by the moving blade 2, while the beard root automatically retracts into the pores in the skin under the resilience of the skin, so that the beard root will not be exposed outside the skin, improving the beard trimming effect.

[0024] While ensuring the hair pulling effect, the distance L1 between the elastic sheet 4 and the adjacent moving blade 2 is between 0.3 mm and 1.2 mm, preferably 0.5 mm. After the beard enters the static blade net 1 through the beard inlet hole, the elastic sheet 4 will not pull the beard immediately due to the influence of the diameter of the beard inlet hole. Only when the elastic sheet 4 moves across the beard inlet hole will it match the inner end surface of the static blade net 1 to pull the beard, and the actual length of the hair pulling will be less than the distance between the elastic sheet 4 and the moving blade 2. Since the hair follicles are generally about 4 mm below the skin, when the length of the hair pulling is less than the distance between the elastic sheet 4 and the moving blade 2, not only the length of the hair pulling is guaranteed, but also the effect of beard trimming is improved. Moreover, it will not cause the skin to have the same tingling sensation as when the hair is pulled, ensuring the comfort during shaving. Of course, the distance between the elastic sheet 4 and the moving blade 2 can also be set larger, which can be specifically set according to the swing distance of the moving blade holder 3. Under normal conditions, the unilateral swing distance of the moving blade holder 3 in the shaver is generally about 0.75mm to 1.3mm. For example, when the unilateral swing distance of the moving blade holder 3 is 1.0mm, the distance between the elastic sheet 4 and the moving blade 2 can be set to 0.6mm or 0.7mm, etc., which is smaller than the unilateral swing distance of the moving blade holder 3. When the unilateral swing distance of the moving blade holder 3 is 1.2mm, the distance between the elastic sheet 4 and the moving blade 2 can be set to 0.8mm or 1.0mm, etc. In short, a setting principle is that when the swing distance of the moving blade holder 3 is larger, the distance between the elastic sheet 4 and the moving blade 2 can also be increased accordingly. On the contrary, when the swing distance of the moving blade holder 3 is smaller, the distance between the elastic sheet 4 and the moving blade 2 can be set to be smaller.

[0025] In order to ensure the hair pulling effect of the elastic sheet 4, the thickness H of the elastic sheet 4 is between 0.05mm and 0.3mm, preferably 0.08mm. In this way, while ensuring that the elastic sheet 4 cooperates with the static knife net 1 to pull the beard roots in the hair follicles out of the skin, improving the trimming effect of the beard, it can also effectively prevent the elastic sheet from twisting and deforming, and ensure the hair pulling effect of the elastic sheet 4. The thickness of the elastic sheet 4 can be set according to metal materials with different rigidity strengths. For example, when the rigidity strength of the metal material is higher, the thickness of the elastic sheet 4 can be set to be smaller; and when the rigidity strength of the metal material is relatively reduced, the thickness of the elastic sheet 4 can be increased accordingly to avoid the elastic sheet 4 from twisting and deforming during the hair pulling process, and ensure the hair pulling effect. In the actual production process, the elastic sheet 4 can also be made of plastic material. When the elastic sheet 4 is made of plastic material, the thickness of the elastic sheet 4 cannot be less than 0.3mm.

[0026] In order to prevent the elastic sheet 4 from cutting off the beard and affecting the hair pulling effect during the hair pulling process, the upper ends of the elastic sheet 4 are provided with arc angles 41 with R less than 0.1mm on both sides. The arc angles 41 with R less than 0.1mm are set on both sides of the end surface of the elastic sheet 4 that fits the inner end surface of the static knife net 1, so that the sharp angles on both sides of the elastic sheet 4 are blunted. In this way, when the beard enters the static knife net 1 through the beard inlet hole, the arc angles 41 on both sides of the upper end surface of the elastic sheet 4 do not have the cutting ability, and the elastic sheet 4 can be used to squeeze the static knife net 1 and the movable knife holder 3 can be used to reciprocate and pull the roots of the beard out of the hair follicles in the skin and make the movable blade 2 cut. After the cutting is completed, the roots of the beard automatically retract into the pores of the skin under the resilience of the skin, ensuring that the remaining roots of the beard will not be exposed outside the skin surface, thereby improving the trimming effect of the beard. Of course, the chamfer radius of the arc angles 41 on both sides of the upper end of the elastic sheet 4 can also be set larger, which can be determined according to the thickness of the elastic sheet 4. When the thickness of the elastic sheet 4 is thicker, the chamfer radius of the arc corner 41 can be set to be correspondingly larger, but it is sufficient as long as the elastic sheet 4 is in close contact with the inner end surface of the static knife net 1 and has no cutting ability.

[0027] Since the static blade net 1 is fixedly connected to the moving blade holder 3 on both sides, the middle of the static blade net 1 forms an arc. In order to ensure the fit between the elastic sheet 4 and the inner end of the static blade net 1 and improve the hair pulling effect and anti-torsion force, the elastic sheet 4 includes an arched portion 42 and a plug-in portion 43. The plug-in portion 43 is arranged on both sides of the arched portion 42 and connected to the moving blade holder 3. The arc of the arched portion 42 matches the arc of the static blade net 1 and fits the inner end face of the static blade net 1. The height of the arched portion 42 is not greater than half of the outer diameter of the arched portion 42. By setting the elastic sheet 4 as the arched portion 42 and the plug-in portion 43, and using the arched portion 42 to fit the inner end face of the middle arc of the static blade net 1, no matter which direction the beard enters the static blade net 1 from, the elastic sheet 4 can pull the beard, thereby ensuring the hair pulling effect of the razor head. The plug-in portion 43 is provided with two pieces and fixed on both sides of the arch portion 42 respectively so that the elastic sheet 4 forms an inverted U-shape with an opening, and the outer sides of the two plug-in portions 43 are vertical straight edges, so that when the elastic sheet 4 is installed, the plug-in portion 43 can be prevented from interfering with the installation and fixation of the static blade net 1. Secondly, the height of the arch portion 42 is not greater than half of the outer diameter of the bending of the arch portion 42. In the production process, it can not only save materials and reduce production costs, but also effectively avoid the torsional deformation of the arch portion 42 during the hair pulling process, thereby ensuring the hair pulling performance of the elastic sheet 4. When in use, the arch portion 42 with a smaller height can also accelerate the falling of broken beards into the collection groove under the moving blade holder 3, effectively preventing the broken beards from blocking the beard channel between the elastic sheet 4 and the moving blade 2 under the action of the adhesion of grease, thereby ensuring the performance of the razor head.

[0028] In order to ensure the roughening performance of the elastic sheet 4 and improve the connection firmness between the elastic sheet 4 and the movable tool holder 3, the plug-in portion 43 is integrally formed with the movable tool holder 3 by integral injection molding. During the production process, the stamped elastic sheet 4 can be first placed in the injection mold, and then the elastic sheet 4 and the movable tool holder 3 are integrally formed by the integral injection molding process. During use, the plug-in portion 43 can be effectively prevented from displacement or misalignment to affect the roughening performance of the elastic sheet 4, and the connection firmness between the elastic sheet 4 and the movable tool holder 3 can be improved.

[0029] Compared with the connection method of the elastic sheet 4 and the moving knife holder 3 by integral injection molding, the elastic sheet 4 can also realize the hair pulling function by connecting and fixing the plug-in portion 43 to the moving knife holder 3 so that it can float up and down (this structure is a conventional floating structure, so no drawings are provided). The installation method is to pass one end of the plug-in portion 43 through the moving knife holder 3, and add an elastic member (such as a metal spring) at the end of the plug-in portion 43 to press against the bottom of the moving knife holder 3 so that the arched portion 42 is always in contact with the inner end surface of the static knife net 1. In this way, when in use, the arched portion 42 can cooperate with the inner end surface of the static knife net 1 under the action of the elastic member to clamp the beard and make the beard swing with the moving knife holder 3 and the elastic sheet 4 to realize the hair pulling operation, and when the static knife net 1 is stressed, the elastic sheet 4 can move downward to make way for the buffer space to ensure that the static knife net 1 is stressed and damaged. Whether the elastic sheet 4 and the moving knife holder 3 are specifically connected and fixed by integral injection molding or by floating connection can be determined according to the needs of the user, and this embodiment does not make further restrictions.

[0030] In order to facilitate the production and processing of the razor head, the movable blade 2 is composed of a plurality of independent metal substrates (not shown in the figure), each of which is fixedly installed on the movable blade holder 3 at intervals, and the elastic sheet 4 is placed between two adjacent metal substrates. The movable blade 2 is made of an independent metal substrate, which greatly facilitates the production and processing of the movable blade 2. The movable blade 2 can be formed at one time through a stamping process, and then a plurality of independent movable blades 2 are placed in an injection mold of the movable blade holder 3 for integral injection molding, ensuring the installation firmness of each movable blade 2 and the elastic sheet 4 with the movable blade holder 3.

[0031] Since the independent moving blade 2 can be formed at one time by a simple stamping process, it needs to be placed in the mold manually one by one during the injection molding process, and the production efficiency is low. Therefore, the present application also provides a technical solution for an integrated moving blade 2, wherein the moving blade 2 includes a plate body 21, and a plurality of whisker removal holes 22 are provided on the plate body 21 so that a plurality of cutting teeth 23 are formed on the plate body 21. The two sides of the plate body 21 are respectively clamped or riveted to the two sides of the moving knife frame 3; the elastic sheet 4 is fixed on the moving knife frame 3 and located in the whisker removal holes 22. A plurality of whisker removal holes 22 are punched out on the plate body 21 so that a plurality of cutting teeth 23 are formed on the plate body 21, and each cutting tooth 23 is respectively fitted with the inner end surface of the static knife net 1, and the elastic sheet 4 is fixed on the moving knife frame 3 and located in the middle of the whisker removal holes 22 on the plate body 21. Although this facilitates the integrated molding of the moving blade 2, it must be fixed to the moving knife frame 3 by means of a buckle or other structure during the installation process. The connection firmness is weaker than that of the independent moving blade 2, but it is convenient for production and assembly. The specific structure of the movable blade 2 can be determined according to user needs.

[0032] On the basis of the above technical solution, the applicant also proposed a technical solution of a reciprocating shaver, which includes the above-mentioned shaver head with pre-hair pulling function.

[0033] The above embodiments should not be regarded as limiting 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 razor head with a pre-hair pulling function, comprising a stationary blade net (1) and a movable blade (2), wherein the movable blade (2) is placed in the stationary blade net (1) and fits with the inner end surface of the stationary blade net (1), and the movable blade (2) is fixed on a movable blade holder (3); characterized in that The movable blade holder (3) is also provided with an elastic sheet (4), which is placed between two adjacent movable blades (2) and connected to the movable blade holder (3) so as to swing synchronously with the movable blades in the same direction, and a distance L1 between the elastic sheet (4) and the movable blades (2) is smaller than a single-side swing distance of the movable blade holder (3); the projection edge line of the upper end of the elastic sheet (4) overlaps with the projection edge line of the upper end of the movable blade (2) when viewed in the swinging direction, and the upper end of the elastic sheet (4) and the upper end of the movable blade (2) are respectively in contact with the inner end surface of the static blade net (1), and arc angles (41) are provided on both sides of the upper end of the elastic sheet (4).

2. The razor head with pre-hair pulling function according to claim 1, characterized in that The distance L1 between the elastic sheet (4) and the adjacent movable blade (2) is between 0.3 mm and 1.2 mm.

3. The razor head with pre-hair pulling function according to claim 1, characterized in that The thickness H of the elastic sheet (4) is between 0.05 mm and 0.3 mm.

4. The razor head with pre-hair pulling function according to claim 1, characterized in that Arc angles (41) with a value of R < 0.1 mm are respectively provided on both sides of the upper end of the elastic sheet (4).

5. The razor head with pre-hair pulling function according to claim 1, characterized in that The elastic sheet (4) comprises an arched portion (42) and an inserting portion (43), wherein the inserting portion (43) is arranged on both sides of the arched portion (42) and is connected to the movable knife holder (3); the arc shape of the arched portion (42) matches the arc shape of the static knife net (1) and fits with the inner end surface of the static knife net (1); the height of the arched portion (42) is not greater than half of the outer diameter of the arched portion (42).

6. The razor head with pre-hair pulling function according to claim 5, characterized in that The plug-in portion (43) is integrally formed with the movable tool holder (3) by integral injection molding.

7. The razor head with pre-hair pulling function according to claim 5, characterized in that The plug-in portion (43) can float up and down and is fixedly connected to the movable knife holder (3), and under the action of the elastic member, the arched portion (42) is always in contact with the inner end surface of the stationary knife net (1).

8. The razor head with pre-hair pulling function according to claim 1, characterized in that The movable blade (2) is composed of a plurality of independent metal substrates, each of which is fixedly installed on the movable blade holder (3) at intervals, and an elastic sheet (4) is placed between two adjacent metal substrates.

9. The razor head with pre-hair pulling function according to claim 1, characterized in that The movable blade (2) comprises a plate body (21), a plurality of hair removal holes (22) are provided on the plate body (21) so that a plurality of cutting teeth (23) are formed on the plate body (21), and two sides of the plate body (21) are respectively clamped and fixed to two sides of the movable blade holder (3); the elastic sheet (4) is fixed on the movable blade holder (3) and is located in the hair removal holes (22).

10. A reciprocating shaver, characterized in that The invention comprises a razor head with a pre-hair pulling function as described in any one of 1 to 9.

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