WO2023137738A1

WO2023137738A1 - Buffered and turned cut-off type shaving system and shaving method

Info

Publication number: WO2023137738A1
Application number: PCT/CN2022/073382
Authority: WO
Inventors: 任向荣; 李群
Original assignee: 温州美葆科技技术有限公司
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2023-07-27
Also published as: CN116806188A

Abstract

A buffered and turned cut-off type shaving system, comprising a cutter head framework, a cutting component, a left fixing member and a right fixing member, wherein the cutting component is located in an accommodating space of the cutter head framework, the left fixing member and the cutter head framework clamp a left end of the cutting component, and the right fixing member and the cutter head framework clamp a right end of the cutting component; and the cutting component comprises an elongated metal supporting body having a thickness of 0.1016-0.3286 mm, and an elongated metal blade, a cutting edge of the metal blade faces a front side wall of the cutter head framework, and free sections of the metal blade and the metal supporting body that are located between the left fixing member and the right fixing member are suspended in the accommodating space. During shaving, the free sections of the metal blade and the metal supporting body that are located between the left fixing member and the right fixing member are bent backwards in an arc shape due to blocking of hair, and thus the hair is cut off by the free section of the metal blade that is bent in an arc shape, so as to reduce skin irritation and improve the shaving comfort. In addition, further disclosed in the present application is a shaving method.

Description

Shaving system and shaving method with cushioning and direction-changing cut-off

technical field

The present application relates to the field of shaving, in particular to a shaving system and a shaving method with cushioning and direction-changing cut-off.

Background technique

As shown in Figure 1, in the existing razor head, its cutting member 200 comprises elongated metal blade 210 and elongated metal curved support body 220, and metal blade 210 is welded on the top of metal curved support body 220, and the blade 210 of metal blade 210 also protrudes forward from metal curved support body 220.

Since the left and right ends of the metal curved support body 220 are constrainedly fixed in the cutter head frame of the shaver head, and the metal curved support body 220 also provides rigid support for the metal blade 210, in order to meet the requirement that the metal blade 210 cut off the hair in a rigid collision shaving manner during the shaving process, the thickness T of the metal curved support body 220 is made thicker in the existing razor head.

Just because the metal curved support body 220 is made relatively thick, the resistance of the hair on the metal blade 210 during shaving is much smaller than the support force provided by the metal curved support body 220 to the metal blade 210, which will cause the blade 210 of the metal blade 210 to cut off the hair with rigid collision, thereby increasing the stimulation to the skin, and then affecting the comfort of shaving.

Therefore, be badly in need of a kind of belt cushioning and changing to cut off type shaving system and shaving method to overcome above-mentioned defective.

application content

An object of the present application is to provide a shaving system with cushioning and redirection cutting to reduce skin irritation and improve shaving comfort.

Another object of the present application is to provide a shaving method that reduces skin irritation and improves shaving comfort.

In order to achieve the above objectives, the buffering and direction-changing cutting shaving system of the present application includes a cutter head frame, a cutting member, a left fixing part and a right fixing part. The cutter head frame has an accommodating space, the cutting member is located in the receiving space and extends along the left and right direction of the cutter head frame, the left end of the cutting member is constrained to slide back and forth on the left side wall of the cutter head frame, the right end of the cutting member is fitted to the right side wall of the cutter head frame in a restricted front and rear sliding movement; Across the right end of the cutting member and assembled on the cutter head frame, the right fixing member also clamps the right end of the cutting member with the cutter head frame; the cutting member includes an elongated metal support with a thickness of 0.1016-0.3286 mm and an elongated metal blade welded above the metal support, the blade of the metal blade faces the front side wall of the cutter head frame, and the free section of the metal blade and the metal support between the left and right holders is suspended in the accommodating space; During the bearding process, the free sections of the metal blade and the metal support between the left and right fixtures are blocked by the hair and curved backwards, and the hair is cut off by the arc-shaped free section of the metal blade.

Preferably, the left and right ends of the metal blade are close to each other along the left and right direction of the cutter head frame when the free section of the metal blade is curved backward, and the left and right ends of the metal support are close to each other along the left and right direction of the cutter head frame when the free section of the metal support is curved backward.

Preferably, the left and right side walls of the cutter head frame are respectively provided with tooling slots for loading the cutting member from top to bottom, the tooling slots communicate with the accommodation space, the left and right ends of the cutting member are respectively assembled in the corresponding tooling slots, and the tooling slots constrain the front and rear sliding of the left and right ends of the cutting member by limiting the left and right ends of the cutting member.

Preferably, the left end of the metal support body extends to the left and crosses the left end of the metal blade to form a left assembly part, and the right end of the metal support body extends to the right and crosses the right end of the metal blade to form a right assembly part. The left assembly part and the right assembly part are respectively assembled in corresponding tooling slots, and the tooling slots constrain the front and rear sliding of the left and right ends of the cutting member by limiting the left and right assembly parts.

Preferably, the left fixing part spans the left end of the metal blade, the right fixing part spans the right end of the metal blade, and each of the left fixing part and the right fixing part abuts against the edge of the metal blade.

Preferably, the left and right side walls of the cutter head frame are respectively provided with spring legs located in the accommodation space, and the spring legs on the same side are misaligned with the tooling slot along the front-back direction of the cutter head frame.

Preferably, there are multiple welding spots between the metal blade and the metal support, and all the welding spots are arranged at equal intervals along the length direction of the cutting member.

Preferably, a guide roller is installed on the front side wall of the cutter head frame. The guide roller extends along the left-right direction of the cutter head frame and is located between the left fixing part and the right fixing part. The axis line of the guide roller is parallel to the cutting edge.

Preferably, the thickness of the metal support is between 0.127-0.1778 mm.

For realizing above-mentioned purpose, the shaving method of the present application comprises the steps:

and

(2) the hair on the skin makes the metal blade and the metal support body both be positioned at the free section between the left fixture and the right fixture and do arc bending backward, thereby make the free section that is positioned at the left fixture and the right fixture and do the arc bending of the metal blade cut hair.

Compared with the prior art, since the cutting member comprises a metal support body with a thickness between 0.1016-0.3286 mm and an elongated metal blade welded on the metal support body, the free section between the metal blade and the metal support body between the left and right holders is suspended in the accommodation space, so that the left and right ends of the cutting member are constrained by the cutter head frame along the front and back direction of the cutter head frame, while the free section of the cutting member located between the left holder and the right holder is not bound by the cutter head frame during shaving. Among them, the free section of the metal blade and the metal support between the left fixing part and the right fixing part is curved backward due to the blocking of hair, so as to prevent the free part on the metal blade from cutting off the hair in a rigid collision, thereby playing a buffering role; at the same time, the metal blade adaptively changes the relationship between the edge of the metal blade and the direction of pulling force during the arc bending process, that is, the relationship between the original edge of the metal blade and the direction of pulling force when it is not blocked by hair becomes non-perpendicular to the direction of pulling force, thus making the arc shape The curved blade cuts through hairs for less skin irritation and a more comfortable shave.

Description of drawings

Figure 1 is a cross-section of a cutting member in a known shaving head.

Fig. 2 is a top-down plan view of the belt cushioning and direction-changing cutting-off shaving system of the present application.

Fig. 3 is a state view of the shaving system with cushioning and direction-changing cut-off shown in Fig. 2 when the left fixing part and the right fixing part are moved away from the cutter head frame.

Fig. 4 is a state view of the shaving system with cushioning and direction changing cutting as shown in Fig. 2 when the left fixing part, the right fixing part and all cutting components are moved away from the cutter head frame.

Fig. 5 is a perspective view of a cutting member in the cushioning and redirection cutting shaving system of the present application.

Fig. 6 is a top-down plan view of the cutting member shown in Fig. 5 .

FIG. 7 is a cross-section of the cutting member shown in FIG. 5 .

Fig. 8 is a state view of the buffered and direction-changing cutting-off shaving system shown in Fig. 2 when it is bent and deformed in an arc backward due to hair blocking.

FIG. 9 is an enlarged view of part D in FIG. 8 .

Detailed ways

In order to describe the technical content and structural features of the present application in detail, further descriptions will be made below in conjunction with the embodiments and accompanying drawings.

Please refer to FIG. 2 to FIG. 4 , the shaving system 100 with cushioning and direction changing cutting of the present application includes a cutter head frame 10 , a cutting member 20 , a left fixing part 30 , a right fixing part 40 and a guide roller 50 . The cutter head frame 10 has an accommodation space 11. Preferably, the cutter head frame 10 is square so that the cutter head frame 10 is a square structure. Correspondingly, the accommodation space 11 is a square space to effectively utilize the size of the cutter head frame 10. Of course, according to actual needs, the shapes of the cutter head frame 10 and the accommodation space 11 can also be other, so they are not limited to those shown in Figures 2, 3, 4 and 8. The cutting member 20 is located in the accommodation space 11 and extends along the left-right direction of the cutter head frame 10, so that the length of the cutting member 20 matches the left and right sides of the cutter head frame 10; The front and rear sliding of the right end of 0 is constrained to be assembled on the right side wall 13 of the cutter head frame 10, that is, the front and rear sliding of the right end of the cutting member 20 is constrained by the right side wall 13, so as to prevent the cutting member 20 from sliding relative to the cutter head frame 10 along the front and rear direction of the cutter head frame 10 during shaving. Left fixture 30 crosses the left end of cutting member 20 from above and is assembled on cutter head frame 10, preferably, left holder 30 is assembled on the left side wall 12 of cutter head frame 10, but not limited thereto; Right fixture 40 crosses the right end of cutting member 20 from above and is assembled on cutter head frame 10, preferably, right holder 40 is assembled on the right side wall 13 of cutter head frame 10, but not limited thereto; The guide roller 50 is assembled on the front side wall 14 of the cutter head frame 10. The guide roller 50 extends along the left-right direction of the cutter head frame 10 and is positioned between the left fixture 30 and the right fixture 40.

Wherein, referring to FIG. 7 to FIG. 9 , the cutting member 20 includes an elongated metal support 21 with a thickness T of 0.1016-0.3286 mm and an elongated metal blade 22 welded on the metal support 21 . The cutting edge 221 of the metal blade 22 faces the front side wall 14 of the cutter head frame 10 , and the free section L1 of the metal blade 22 and the metal support body 21 between the left fixing part 30 and the right fixing part 40 is suspended in the accommodation space 11 . Therefore, during the shaving process, the free segment L1 of the metal blade 22 and the metal support body 21 located between the left fixing member 30 and the right fixing member 40 is blocked by the hair 300 and curved backward, as shown in FIGS. 8 and 9 ; It should be noted that when the buffering and direction-changing cutting-off type shaving system 100 of the present application does not need the guide roller 50, the guide roller 50 at the front side wall 14 of the cutter head frame 10 can be deleted at this time; More specifically, as follows:

As shown in Fig. 2 and Fig. 8, the left and right ends of the metal blade 22 approach each other along the left and right direction of the cutter head frame 10 when the free segment L1 of the metal blade 22 is curved backward. , and the arc bending degree of the free segment L1 of the cutting member 20 is decreasing from the center to the left and right ends of the two cutting members 20, as shown in FIGS. 8 and 9 . Specifically, in FIGS. 3 and 4 , the left and right side walls 12 ( 13 ) of the cutter head frame 10 are each provided with tooling slots 15 for the cutting member 20 to be loaded from top to bottom. The tooling slots 15 communicate with the accommodation space 11 . Thereby constraining the front and rear sliding of the left and right ends of the cutting member 20, to ensure the reliability of the front and rear sliding constraints of the left side wall 12 of the cutter head frame 10 to the left end of the cutting member 20, and to ensure the reliability of the front and rear sliding constraints of the right side wall 13 of the cutter head frame 10 to the right end of the cutting member 20, and also to ensure that the left and right ends of the cutting member 20 approach more smoothly when the free section L1 of the cutting member 20 is curved backward. More specifically, in FIGS. 3 to 6 , the left end of the metal support body 21 extends to the left and crosses the left end of the metal blade 22 to form a left assembly portion 212, and the right end of the metal support body 21 extends to the right and crosses the right end of the metal blade 22 to form a right assembly portion 213. The front and rear sliding of the left and right ends of the cutting member 20 is designed so that the tooling slot 15 of the left side wall 12 directly blocks the left end of the metal support 21 of the cutting member 20, and the tooling slot 15 of the right side wall 13 directly blocks the right end of the metal support 21 of the cutting member 20, and the metal blade 22 is indirectly blocked because of being welded to the metal support 21. Sensitive and smoother, so the cushioning effect and cutting effect are better. It should be noted that, since the left and right ends of the cutting member 20 are close to each other when the free section L1 is bent backward, correspondingly, the left and right ends of the cutting member 20 are required not to slide out of the tooling slot 15; The other is provided with a limiting long groove extending along the left and right direction of the cutter head frame 10, and the limiting protrusion is placed in the limiting long groove. With the cooperation of the limiting protrusion and the limiting long groove, on the one hand, the front and rear sliding of the left end of the cutting member 20 can be restricted;

As shown in FIGS. 2 and 8 , the left fixture 30 spans the left end of the metal blade 22 , the right fixture 40 spans the right end of the metal blade 22 , and the left fixture 30 and the right fixture 40 abut against the edge 221 of the metal blade 22 respectively. Simultaneously, in Fig. 4, the left and right side walls 12 (13) of the cutter head frame 10 are respectively provided with spring legs 16 located in the accommodation space 11, the spring legs 16 in the same side are misaligned with the tooling slot 15 along the front and back direction of the cutter head frame 10, the spring legs 16 on the left side wall 12 of the cutter head frame 10 are positioned at the right side of the tooling slot 15 on the left side wall 12 of the cutter head frame 10, and the spring legs 16 on the right side wall 13 of the cutter head frame 10 are positioned at the cutter head frame On the left side of the tooling slot 15 on the right side wall 13 of 10, the spring leg 16 supports the metal support body 21 from below, so that the cutting member 20 abutted by the left fixing member 30 and the right fixing member 40 can also slide downward in a certain range and reset sliding, thereby ensuring that the cutting member 20 remains in a state of sticking to the skin. Specifically, in FIGS. 4 and 5, there are thirteen welding spots 23 between the metal blade 22 and the metal support 21, and all the welding spots 23 are arranged at equal intervals along the length direction of the cutting member 20 to ensure the consistency and reliability of each fixing between the metal blade 22 and the metal support 21. Of course, according to actual needs, the number of welding spots 23 can also be other, and it is flexibly arranged according to the length of the cutting member 20. For example, in FIG. 7, the thickness T of the metal support 21 is between 0.127-0.1778 millimeters, such as but not limited to 0.1523, 0.1524, 0.1525 or 0.1526 millimeters. Correspondingly, the thickness of the metal blade 22 is 0.3 to 0.5 times the thickness T of the metal support 21. In addition, the front and rear dimension L2 of the metal blade 22 is less than 1 millimeter, preferably less than 0.9 millimeters , such as but not limited to 0.85mm. It is worth noting that although the left fixing part 30 and the right fixing part 40 shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 8 are two independent and separate sheet-shaped components, of course, according to actual needs, the left fixing part 30 and the right fixing part 40 can be connected into one and integrated components, so it is not limited to what is shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 8.

In summary, the steps of the shaving method of the present application include: (1) pulling the cushioning and direction-changing cutting type shaving system 100 to slide on the skin along the direction of the buffering and direction-changing cutting type shaving system 100 from back to front; and

(2) The hair 300 on the skin makes the free section L1 of the metal blade 22 and the metal support body 21 between the left fixture 30 and the right fixture 40 curved backwards, so that the free section L1 of the metal blade 22 that is positioned between the left fixture 30 and the right fixture 40 and that is curved is cut off the hair 300; During the process of the system 100 sliding on the skin from back to front, the hair 300 on the skin blocks the free segment L1 of the cutting member 20 and causes the free segment L1 to bend backward in an arc shape. The deformed state is shown in FIG. 8 and FIG. Bending deformation occurs so that the blade 221 changes from the original relationship perpendicular to the F tension to a non-perpendicular relationship, thereby changing the direction of the blade 221 of the cutting member 20 to shave the hair 300, so that the blade 221 of the cutting member 20 after bending and deformation cuts off the hair 300 by cutting, so the skin irritation is small and the shaving comfort is good.

Compared with the prior art, since the cutting member 20 includes a metal support body 21 with an elongated thickness T between 0.1016-0.3286 mm and an elongated metal blade 22 welded on the top of the metal support body 21, the metal blade 22 and the metal support body 21 are located at the free segment L1 between the left fixture 30 and the right fixture 40 and are suspended in the accommodation space 11, so that the left and right ends of the cutting member 20 are constrained by the cutter head frame 10 along the front and back direction of the cutter head frame 10. And cutting member 20 is positioned at the free section L1 between left fixture 30 and right fixture 40 and is not bound by cutter head frame 10, so in the shaving process, both metal blade 22 and metal support body 21 are positioned at the free section L1 between left fixture 30 and right fixture 40 because hair 300 stops and do arc-shaped bending backward, avoid the free section L1 on the metal blade 22 to cut off hair 300 with the mode of rigid collision, thereby play buffering effect; During the bending process, the relationship between the edge 221 of the metal blade 22 and the direction of the pulling force is adaptively changed, that is, the relationship between the edge 221 of the original metal blade 22 and the direction of the pulling force is changed from the relationship perpendicular to the direction of the pulling force when it is not blocked by the hair 300 to a non-perpendicular relationship with the direction of the pulling force. That is, in FIG. It can reduce the irritation to the skin and improve the comfort of shaving.

It should be noted that, in Fig. 2 to Fig. 4, the direction indicated by the arrow A is the direction from left to right of the cutter head frame 10, and the direction indicated by the arrow B is the direction from front to rear of the cutter head frame 10; in addition, on the same side, the number of the tooling slot 15 and the spring legs 16 are determined by the number of the cutting members 20, and they are identical to each other; Then it is in an arc state.

The above disclosures are only preferred examples of the present application, and certainly cannot limit the scope of the present application. Therefore, equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

A shaving system with cushioning and direction-changing cutting, comprising a cutter head frame, a cutting member, a left fixing part and a right fixing part. The cutter head frame has a receiving space, the cutting member is located in the receiving space and extends along the left and right direction of the cutting head frame, the left end of the cutting member is fitted on the left side wall of the cutting head frame in a restricted front and rear sliding direction, the right end of the cutting member is fitted in a right side wall of the cutting head frame in a restricted front and rear sliding movement, and the left fixing part spans the left end of the cutting member from above and is mounted on the blade The head frame, the left fixing part also clamps the left end of the cutting member with the cutter head frame, the right fixing part spans the right end of the cutting member from above and is assembled on the cutter head frame, the right fixing part also clamps the right end of the cutting member with the cutter head frame, it is characterized in that the cutting member includes an elongated metal support with a thickness between 0.1016-0.3286 mm and an elongated metal blade welded above the metal support, and the blade of the metal blade faces the front side of the cutter head frame Wall, the free section of the metal blade and the metal support between the left and right fixtures is suspended in the accommodating space; during shaving, the free section of the metal blade and the metal support between the left and right fixtures is blocked by hair and curved backwards, and the hair is cut by the arc-shaped free section of the metal blade.
The shaving system with cushioning and direction-changing cutting according to claim 1, wherein the left and right ends of the metal blade approach each other along the left and right directions of the cutter head frame during the arc bending process of the free section of the metal blade backward, and the left and right ends of the metal support body approach each other along the left and right directions of the cutter head frame during the arc bending process of the free segment of the metal support body.
The shaving system with buffer and direction-changing cutting according to claim 1, wherein the left and right side walls of the cutter head frame are provided with tooling slots for loading the cutting member from top to bottom, the tooling slots communicate with the accommodating space, the left and right ends of the cutting member are respectively assembled in the corresponding tooling slots, and the tooling slots constrain the front and rear sliding of the left and right ends of the cutting member by limiting the left and right ends of the cutting member.
The shaving system with cushioning and direction-changing cutting according to claim 3, wherein the left end of the metal support body extends to the left and crosses the left end of the metal blade to form a left assembly part, the right end of the metal support body extends to the right and crosses the right end of the metal blade to form a right assembly part, the left assembly part and the right assembly part are respectively assembled in corresponding tooling slots, and the tooling slot restricts the front and rear sliding of the left and right ends of the cutting member by limiting the left and right assembly parts.
The shaving system with buffering and direction-changing cutting according to claim 4, wherein the left fixing part spans the left end of the metal blade, the right fixing part spans the right end of the metal blade, and each of the left fixing part and the right fixing part abuts against the edge of the metal blade.
The shaving system with cushioning and direction-changing cutting according to claim 3, wherein the left and right side walls of the cutter head frame are respectively provided with spring legs located in the accommodation space, and the spring legs on the same side are misaligned with the tooling slot along the front and back direction of the cutter head frame, the spring legs on the left side wall of the cutter head frame are located on the right side of the tooling slot on the left side wall of the cutter head frame, and the spring legs on the right side wall of the cutter head frame are located on the left side of the tooling slot on the right side wall of the cutter head frame. The elastic legs support the metal support body from below.
The shaving system with cushioning and direction changing cutting according to claim 1, characterized in that there are a plurality of welding spots between the metal blade and the metal support, and all the welding spots are arranged at equal intervals along the length direction of the cutting member.
The shaving system with buffering and direction-changing cutting according to claim 1, wherein a guide roller is installed on the front side wall of the cutter head frame, the guide roller extends along the left-right direction of the cutter head frame and is located between the left fixing part and the right fixing part, and the axis line of the guide roller is parallel to the cutting edge.
The shaving system with buffer and direction-changing cut-off according to claim 1, characterized in that the thickness of the metal support is between 0.127-0.1778 mm.
A shaving method according to any one of claims 1 to 9, characterized in that it comprises the following steps:

and

(2) the hair on the skin makes the metal blade and the metal support body both be positioned at the free section between the left fixture and the right fixture and do arc bending backward, thereby make the free section that is positioned at the left fixture and the right fixture and do the arc bending of the metal blade cut hair.