Tool bit assembly of rotary electric shaver

Abstract

The utility model discloses a rotary type electric shaver head assembly which comprises a shaver net cover and a blade assembly, the blade assembly comprises a connecting piece and a moving blade, the moving blade is fixedly connected to the connecting piece, the connecting piece is rotationally connected with the shaver net cover through a rotary positioning structure, a plurality of beard inlet holes are formed in the shaver net cover, and the beard inlet holes are communicated with the connecting piece. And the connecting piece drives the movable cutter to shear hair extending into the cutter mesh enclosure from the beard inlet hole. The shaver has the following advantages and effects that a new mechanical structure is utilized, and the shaver has the effects of high shaving efficiency and high rotating concentricity of the movable cutter.

Description

Technical Field

[0001] The utility model relates to the technical field of shaver head components, in particular to a rotary electric shaver head component. Background Art

[0002] The blade assembly of an electric shaver generally includes a stationary blade cover and a rotating movable blade located under the blade cover. By placing the shaver close to the face, the beard is inserted into the blade cover, and the movable blade is driven to rotate by electricity, so that the hair in contact with the shearing edge of the movable blade is cut off by the movable blade.

[0003] The existing Chinese patent with the announcement number CN203831437U discloses a knife net of a rotary shaver, comprising: a knife net cylinder body for supporting and assembling, a knife net surface body in contact with the skin and beard, a beard inlet groove or a beard inlet hole for the beard to enter and cooperate with the blade is formed on the disc-shaped knife net surface body, the length of the beard inlet groove is arranged along the radial direction of the knife net surface body, and a plurality of beard inlet grooves or beard inlet holes are arranged to form at least one concentric circle with the knife net surface body as the same center; the width of the outer end of the beard inlet groove is There is a gradient change from wide to narrow from the outside to the inside, and the width of the middle section of the whisker inlet groove remains unchanged to the inner end of the whisker inlet groove; a large number of whisker inlet grooves and a large number of whisker inlet holes are arranged into two concentric circles with the same center as the knife net surface, one of which is an outer circle located in the outer circle, and the other is an inner circle located within the outer circle; the whisker inlet grooves and the whisker inlet holes are arranged in an alternating array; along the radial direction of the knife net cylinder, the whisker inlet groove array of the outer circle is opposite to the whisker inlet hole array of the inner circle, and the whisker inlet hole array of the outer circle is opposite to the whisker inlet groove array of the inner circle.

[0004] However, the blade net of the above-mentioned razor has the following disadvantages: the outer circle and the inner circle of the blade net are concentrically arranged, and the widths of the outer circle and the inner circle are basically the same. When shaving, the inner circle close to the center position contacts the hair in a larger area. However, since there is a gap between the outer circle and the inner circle, the gap occupies a certain shaving space, reducing the effective contact area between the blade net and the hair, thereby making the shaving efficiency not high enough, which urgently needs to be improved. Utility Model Content

[0005] The utility model aims to provide a rotary electric shaver head assembly, which has the effects of high shaving efficiency and high concentricity of the rotating blade.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a rotary electric shaver head assembly, comprising a blade cover and a blade assembly, the blade assembly comprising a connecting member and a movable blade, the movable blade being fixedly connected to the connecting member, the blade assembly being rotatably connected to the blade cover through a rotating positioning structure, a plurality of hair inlet holes being provided on the blade cover, the connecting member driving the movable blade to cut the hair extending into the blade cover from the hair inlet holes;

[0007] The knife net cover comprises an inner ring shaving track and an outer ring shaving track which are sequentially distributed from the inside to the outside, and the width of the inner ring shaving track is greater than the width of the outer ring shaving track.

[0008] By adopting the above technical scheme, the knife mesh cover is attached to the area to be cut, and the hair extends into the knife mesh cover through the beard inlet hole. The connecting piece is used to drive the movable knife to rotate relative to the knife mesh cover, and the movable knife cuts the hair extending into the beard inlet hole. Under the positioning action of the rotating positioning structure, the rotation center of the connecting piece relative to the knife mesh cover is more consistent, thereby improving the concentricity of the movable knife when rotating relative to the knife mesh cover. At the same time, by setting the width of the inner ring shaving track to be larger than the width of the outer ring shaving track, the inner ring shaving track of the utility model occupies a larger proportion of the entire knife mesh cover, thereby making the inner ring shaving track contact a larger hair area, thereby improving the shaving efficiency, and having the effects of high shaving efficiency and high concentricity of the movable knife rotation.

[0009] The utility model is further configured as follows: the rotation positioning structure includes a rotation connection part and a rotation groove, the rotation connection part is arranged on the knife net cover, the rotation groove is opened on the connecting piece, and the rotation connection part is rotationally matched with the rotation groove.

[0010] By adopting the above technical solution, the connecting member can utilize the rotating groove to rotate with the central axis of the rotating connecting part as the rotation center, and then drive the movable knife to rotate concentrically through the connecting member to improve the rotation concentricity of the movable knife.

[0011] The utility model is further configured as follows: a surface of the inner ring shaving track and the outer ring shaving track away from the blade assembly is configured as an outwardly convex arc surface.

[0012] By adopting the above technical solution, the arc-shaped inner ring shaving track and the outer ring shaving track can better fit the shaving area, while improving the smoothness and comfort of the inner ring shaving track moving in the shaving area.

[0013] The utility model is further configured as follows: the hair inlet holes on the inner ring shaving track include short hair inlet hole areas and long hair inlet hole areas that are distributed at intervals.

[0014] The utility model is further configured as follows: the short-beard hole-entry area includes a plurality of circular through holes that are spaced apart, and the long-beard hole-entry area includes a plurality of first strip holes that are adjacently arranged.

[0015] By adopting the above technical solution, the first strip-shaped hole can shave longer hair, and the circular through hole can achieve better shaving for shorter hair.

[0016] The utility model is further configured as follows: the shaving inlet holes on the outer ring shaving track include a plurality of second strip holes distributed at intervals.

[0017] By adopting the above technical solution, the second strip-shaped hole not only allows short and thin hair to extend therein, but also allows longer hair to extend therein, thereby achieving a comprehensive shaving of long and short hair.

[0018] The utility model is further configured as follows: an inner ring cutter head group and an outer ring cutter head group are respectively bent on the movable cutter corresponding to the inner ring shaving track and the outer ring shaving track, and the inner ring cutter head group and the outer ring cutter head group both include a plurality of shaving heads which are oriented in the same direction and are spaced apart on the movable cutter.

[0019] By adopting the above technical solution, when the movable knife rotates, the inner ring blade head group can shave the hair extending from the beard inlet hole of the inner ring shaving track, and the outer ring blade head group can shave the hair extending from the beard inlet hole of the outer ring shaving track.

[0020] The utility model is further configured as follows: the shearing edge of the razor head comprises a middle shearing portion close to the middle and edge shearing portions located on both sides of the middle shearing portion, and the thickness of the middle shearing portion is smaller than the thickness of the edge shearing portions on both sides.

[0021] By adopting the above technical solution, the thinner middle cutting portion is sharper and can be used for fine trimming, while the slightly thicker edge cutting portions on both sides can be used for rough shaving. Such a razor head can shave the beard from the side when the blade cover is moved horizontally on the skin, thereby achieving the purpose of first using the edge cutting portion for rough shaving and then using the middle cutting portion for fine trimming.

[0022] The utility model is further configured as follows: a lubrication structure is provided between the rotating connection portion and the connecting piece, and the connecting piece is rotatably connected to the rotating connection portion through the lubrication structure.

[0023] By adopting the above technical solution, the lubrication structure is conducive to improving the smoothness of the rotation of the connecting member relative to the knife screen cover, and at the same time reducing the noise generated when the connecting member rotates around the central axis of the rotating connection part.

[0024] The utility model is further configured as follows: the lubrication structure comprises a lubrication sleeve, the material of the lubrication sleeve is set to PTFE, the lubrication sleeve is rotatably arranged in the rotation groove, and the inner ring of the lubrication sleeve is rotationally matched with the rotation connection part.

[0025] By adopting the above technical solution, the PTFE material has good wear resistance and excellent self-lubricating ability, which reduces the wear between the inner wall of the rotating groove of the connecting piece and the outer wall of the rotating connecting part of the knife net cover, improves the rotation smoothness of the connecting piece, and extends the service life of the utility model.

[0026] In summary, the utility model has the following beneficial effects:

[0027] A knife net cover and a blade assembly are arranged, and the blade assembly includes a connecting piece and a movable knife, the movable knife is fixedly connected to the connecting piece, and a rotating connecting part is provided in the middle of the knife net cover, and a rotating groove is provided at the end of the connecting piece corresponding to the rotating connecting part. The rotational cooperation between the rotating connecting part and the rotating groove can improve the rotational concentricity of the connecting piece relative to the knife net cover. At the same time, the knife net cover of the utility model includes an inner ring shaving track and an outer ring shaving track which are arranged in sequence from the inside to the outside, and the inner ring shaving track and the outer ring shaving track are both provided with beard inlet holes, and the width of the inner ring shaving track is greater than that of the outer ring shaving track, so that the inner ring shaving track of the utility model occupies a larger proportion of the entire knife net cover, and thus the hair area contacted by the inner ring shaving track is larger, thereby improving the shaving efficiency, and having the effects of high shaving efficiency and high rotation concentricity of the movable knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of a specific embodiment of the present utility model.

[0029] Figure 2 It is a structural diagram of another perspective of a specific embodiment of the utility model.

[0030] Figure 3 It is an exploded view of the first specific embodiment of the utility model.

[0031] Figure 4 It is a structural diagram of the blade assembly of the utility model.

[0032] Figure 5 It is a longitudinal sectional view of a specific embodiment 1 of the utility model.

[0033] Figure 6 It is a longitudinal sectional view of the second specific embodiment of the utility model.

[0034] In the figure: 1, knife net cover; 11, inner ring shaving track; 11a, first strip hole; 11b, circular through hole; 12, outer ring shaving track; 12a, second strip hole; 13, rotating connection part; 2, moving knife; 21, inner ring knife head group; 22, outer ring knife head group; 23, razor head; 231, middle shearing part; 232, edge shearing part; 3, connecting piece; 3a, rotating groove; 4, lubricating sleeve. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings. Specific embodiment 1

[0037] A rotary electric shaver head assembly, such as Figure 1-2As shown, it includes a knife net cover 1 and a blade assembly, the blade assembly includes a connecting member 3 and a movable knife 2, the movable knife 2 is fixedly connected to the connecting member 3, the connecting member 3 is rotatably connected to the knife net cover 1 through a rotating positioning structure, a plurality of hair inlet holes are opened on the knife net cover 1, the connecting member 3 drives the movable knife 2 to cut the hair extending into the knife net cover 1 through the hair inlet holes; the knife net cover 1 includes an inner ring shaving track 11 and an outer ring shaving track 12 distributed in sequence from the inside to the outside, and the width of the inner ring shaving track 11 is greater than the width of the outer ring shaving track 12.

[0038] like Figure 3 and Figure 5 As shown, the rotation positioning structure includes a rotation connection part 13 and a rotation groove 3a. The rotation connection part 13 is arranged on the knife net cover 1, and the rotation groove 3a is opened on the connecting member 3. The rotation connection part 13 and the rotation groove 3a are rotationally matched, so that the connecting member 3 can use the rotation groove 3a to rotate with the central axis of the rotation connection part 13 as the rotation center, and then drive the movable knife 2 to rotate concentrically through the connecting member 3 to improve the rotation concentricity of the movable knife 2.

[0039] like Figure 1-4 and Figure 5 As shown, a side of the inner ring shaving track 11 away from the blade assembly is set as an outwardly convex arc surface, and the inner ring shaving track 11 with an arc setting can better fit the shaving area, while improving the smoothness and comfort of the inner ring shaving track 11 moving in the shaving area; the beard inlet holes on the inner ring shaving track 11 include a plurality of first strip holes 11a and circular through holes 11b distributed at intervals, a plurality of circular through holes 11b form a short beard inlet hole area, a plurality of first strip holes 11a are adjacently arranged to form a long beard inlet hole area, and the short beard inlet hole area and the long beard inlet hole area are arranged at equal intervals on the inner ring shaving track 11, the first strip holes 11a can shave longer hair, and the circular through holes 11b are arranged at equal intervals to form a long beard inlet hole area. 11b can achieve better shaving for shorter hair; the side of the outer ring shaving track 12 away from the blade assembly is set to a convex arc surface, and the outer ring shaving track 12 with an arc surface design can better fit the skin, improve the smoothness of the knife net cover 1 when moving on the skin, and improve the shaving comfort; the hair inlet holes on the outer ring shaving track 12 include a plurality of second strip holes 12a distributed at intervals, and the second strip holes 12a allow not only short and thin hair to extend, but also allow longer hair to extend to achieve comprehensive shaving of long and short hair. In this embodiment, the first strip holes 11a and the second strip holes 12a are opened radially along the knife net cover 1, and the inclination angle is set to 25° to 40°.

[0040] like Figure 3-4As shown, the inner ring blade head group 21 and the outer ring blade head group 22 are bent respectively on the movable blade 2 corresponding to the inner ring shaving track 11 and the outer ring shaving track 12. The inner ring blade head group 21 and the outer ring blade head group 22 both include a plurality of shaving heads 23 which are oriented in the same direction and are spaced apart on the movable blade 2. The shaving heads 23 of the inner ring blade head group 21 are formed by cutting and then bending the body of the movable blade 2. When the movable blade 2 rotates, the inner ring blade head group 21 can shave the hair extending from the beard inlet hole of the inner ring shaving track 11, and the outer ring blade head group 22 can shave the hair extending from the beard inlet hole of the outer ring shaving track 12. The shearing blade of the shaving head 23 includes a middle shearing portion 231 close to the middle and edge shearing portions 232 located on both sides of the middle shearing portion 231, and the thickness of the middle shearing portion 231 is smaller than the thickness of the edge shearing portions 232 on both sides. The thinner middle shearing portion 231 is sharper and can be used for fine trimming, while the thicker edge shearing portions 232 on both sides can be used for rough shaving. Such a shaving head 23 allows the shaving head 23 to shave the beard from the side when the blade cover 1 is translated over the skin, thereby achieving the purpose of first using the edge shearing portion 232 for rough shaving and then using the middle shearing portion 231 for fine trimming.

[0041] The basic working principle of the utility model is: the blade mesh cover 1 is attached to the area to be cut, and the hair extends into the blade mesh cover 1 through the beard inlet hole, and the connecting member 3 is used to drive the movable blade 2 to rotate relative to the blade mesh cover 1, and the movable blade 2 cuts off the hair extending into the beard inlet hole. Under the positioning effect of the rotating positioning structure, the rotation center of the connecting member 3 relative to the blade mesh cover 1 is more consistent, thereby improving the concentricity of the movable blade 2 when rotating relative to the blade mesh cover 1, and at the same time, by setting the width of the inner ring shaving track 11 to be larger than the width of the outer ring shaving track 12, the inner ring shaving track 11 of the utility model occupies a larger proportion of the entire blade mesh cover 1, thereby making the hair area contacted by the inner ring shaving track 11 larger, thereby improving the shaving efficiency, and having the effects of high shaving efficiency and high rotation concentricity of the movable blade 2. Specific embodiment 2

[0043] A rotary electric shaver head assembly, such as Figure 6As shown, the difference between this embodiment and the specific embodiment 1 is that: a lubrication structure is provided between the rotating connection part 13 and the connecting member 3, and the connecting member 3 is rotatably connected to the rotating connection part 13 through the lubrication structure. The lubrication structure is beneficial to improving the smoothness of the rotation of the connecting member 3 relative to the knife net cover 1, and at the same time reducing the noise generated when the connecting member 3 rotates around the central axis of the rotating connection part 13; the lubrication structure includes a lubrication sleeve 4, the material of the lubrication sleeve 4 is set to PTFE, the lubrication sleeve 4 is rotatably arranged in the rotating groove 3a, and the inner ring of the lubrication sleeve 4 is rotatably matched with the rotating connection part 13, the PTFE material has good wear resistance and excellent self-lubrication ability, which reduces the wear between the inner wall of the rotating groove 3a of the connecting member 3 and the outer wall of the rotating connection part 13 of the knife net cover 1, improves the rotation smoothness of the connecting member 3, and extends the service life of the utility model.

[0044] The other structures of this embodiment are the same as those of the first embodiment and will not be described again.

[0045] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A rotary electric shaver head assembly, comprising a blade cover (1) and a blade assembly, characterized in that: The blade assembly comprises a connecting member (3) and a movable blade (2), wherein the movable blade (2) is fixedly connected to the connecting member (3), and the blade assembly is rotatably connected to the blade net cover (1) via a rotating positioning structure, wherein a plurality of hair inlet holes are provided on the blade net cover (1), and the connecting member (3) drives the movable blade (2) to cut the hair extending into the blade net cover (1) through the hair inlet holes; The blade mesh cover (1) comprises an inner ring shaving track (11) and an outer ring shaving track (12) which are sequentially distributed from the inside to the outside, and the width of the inner ring shaving track (11) is greater than the width of the outer ring shaving track (12).

2. A rotary electric shaver head assembly according to claim 1, characterized in that: The rotation positioning structure comprises a rotation connection part (13) and a rotation groove (3a); the rotation connection part (13) is arranged on the knife net cover (1); the rotation groove (3a) is opened on the connecting member (3); the rotation connection part (13) and the rotation groove (3a) are rotationally matched.

3. A rotary electric shaver head assembly according to claim 1, characterized in that: The inner ring shaving track (11) and the outer ring shaving track (12) are configured as outwardly convex arc surfaces on the surfaces away from the blade assembly.

4. A rotary electric shaver head assembly according to claim 1, characterized in that: The hair inlet holes on the inner ring shaving track (11) include short hair inlet hole areas and long hair inlet hole areas that are distributed at intervals.

5. A rotary electric shaver head assembly according to claim 4, characterized in that: The short-beard hole-entry area comprises a plurality of circular through holes (11b) distributed at intervals, and the long-beard hole-entry area comprises a plurality of first strip holes (11a) arranged adjacent to each other.

6. A rotary electric shaver head assembly according to claim 1, characterized in that: The shaving inlet holes on the outer ring shaving track (12) include a plurality of second strip-shaped holes (12a) distributed at intervals.

7. A rotary electric shaver head assembly according to claim 1, characterized in that: An inner ring cutter head group (21) and an outer ring cutter head group (22) are respectively bent and provided on the movable cutter (2) corresponding to the inner ring shaving track (11) and the outer ring shaving track (12); the inner ring cutter head group (21) and the outer ring cutter head group (22) both include a plurality of shaving heads (23) oriented in the same direction and distributed at intervals on the movable cutter (2).

8. A rotary electric shaver head assembly according to claim 7, characterized in that: The shearing edge of the razor head (23) comprises a middle shearing portion (231) close to the middle and edge shearing portions (232) located on both sides of the middle shearing portion (231), and the thickness of the middle shearing portion (231) is smaller than the thickness of the edge shearing portions (232) on both sides.

9. A rotary electric shaver head assembly according to claim 2, characterized in that: A lubrication structure is provided between the rotating connection portion (13) and the connecting member (3), and the connecting member (3) is rotatably connected to the rotating connection portion (13) via the lubrication structure.

10. A rotary electric shaver head assembly according to claim 9, characterized in that: The lubrication structure comprises a lubrication sleeve (4), the material of the lubrication sleeve (4) is set to PTFE, the lubrication sleeve (4) is rotatably arranged in the rotation groove (3a), and the inner ring of the lubrication sleeve (4) is rotationally matched with the rotation connection part (13).

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