Multi-functional small rotary shaving assembly

Abstract

A multi-functional small rotary shaving, includes a cutter head cover and a moving cutter assembly. The moving cutter assembly includes moving cutter and support for holding moving cutter, cutter head cover includes cover head and cover body which are integrated up and down, cover head includes cover top and cover wall connected to outer side of cover top, cover top and cover wall enclose to form one cutting cavity for moving cutter to rotate inside, and cover head has multiple hair inlet slots in circumferential direction for communicating inside with outside of cover head; hair inlet slots cross from cover top to cover wall and passes through cover top longitudinally and cover wall transversely at same time, and turning joint between cover top and cover wall has horn-shaped hair guiding openings which correspond to hair inlet slots and which are used for guiding hair into hair inlet slots.

Claims

1. A rotary shaving assembly, comprising: a cutter head cover and a moving cutter assembly; wherein the moving cutter assembly comprises a moving cutter and a support for holding the moving cutter, the cutter head cover comprises a cover head and a cover body integrated with the cover head, the cover head comprises a cover top and a cover wall connected to the cover top, the cover top and the cover wall enclose to form a cutting cavity for the moving cutter to rotate inside, and the cover head is provided with multiple hair inlet slots in a circumferential direction for communicating an inside with an outside of the cover head; the multiple hair inlet slots cross from the cover top to the cover wall and pass through the cover top radially and the cover wall downwardly at the same time, and a turning joint between the cover top and the cover wall is provided with horn-shaped hair guiding openings which correspond to the multiple hair inlet slots and which are used for guiding hair into the multiple hair inlet slots; each of the horn-shaped hair guiding openings has an outwardly inclined upwardly V-shaped structure and respectively forms a Y-shaped structure with a hair inlet slot at the cover top and with a hair inlet slot at the cover wall.

2. The rotary shaving assembly according to claim 1, wherein the moving cutter comprises a moving cutter body, a side cutter for laterally cutting the hair in the multiple hair inlet slots on the cover wall is provided on a side of the moving cutter body, an elastic arm fixedly connecting the side cutter and the moving cutter body and elastically pressing the side cutter against an inner wall of the cover wall is provided between the side cutter and the moving cutter body, and the elastic arm and the side cutter are located on an outer side of the support; an upward top cutter is provided between an inner side of the side cutter and a rotational center of the moving cutter body on the moving cutter body, and the top cutter is separated from the side cutter and the elastic arm; the top cutter is exposed above the support and is used to cut the hair in the multiple hair inlet slots on the cover top.

3. The rotary shaving assembly according to claim 2, wherein the multiple hair inlet slots forms a 7-shaped structure by means of a cover top section located on the cover top and a cover wall section located on the cover wall; the horn-shaped hair guiding openings are connected between the corresponding cover top section and the cover wall section of the multiple hair inlet slots, the side cutter is located below the horn-shaped hair guiding openings, and the top cutter is located on an inner side of the horn-shaped hair guiding openings; an avoiding opening for avoiding the horn-shaped hair guiding openings is formed between the top cutter and the side cutter.

4. The rotary shaving assembly according to claim 3, wherein the horn-shaped hair guiding openings are located on an outer side of a rotary cutting region (S1) of the top cutter, and an inner end of the multiple hair inlet slots is located in the rotary cutting region (S1) of the top cutter; the horn-shaped hair guiding openings are located above a rotary cutting region (S2) of the side cutter, and a lower end of the multiple hair inlet slots is located in the rotary cutting region (S2) of the side cutter.

5. The rotary shaving assembly according to claim 2, wherein the top cutter, the side cutter, the elastic arm, and the moving cutter body are integrally press formed, the moving cutter body being integrally injection molded with the support.

6. The rotary shaving assembly according to claim 5, wherein the side cutter and the elastic arm and the top cutter are respectively provided with two arranged around the rotational center.

7. The rotary shaving assembly according to claim 2, wherein the cover wall has a conical structure, the side cutter being inclined at an angle to a center of rotation thereof and making its path of rotation forming a conical area corresponding to the cover wall, and the elastic arm being inclined and corresponding to the side cutter.

8. The rotary shaving assembly according to claim 2, wherein the side cutter has a side cutting edge, the side cutter being inclined in a direction of rotary cutting, and an included angle (a) between the side cutting edge and the cover wall on its tangent line being an acute angle.

9. The rotary shaving assembly according to claim 2, wherein the top cutter is provided with a top cutting edge, the top cutter is inclined in a direction of rotary cutting, and an included angle (b) between the top cutting edge and the cover top is an acute angle.

10. The rotary shaving assembly according to claim 2, wherein the elastic arm is of a U-shaped structure.

11. The rotary shaving assembly according to claim 1, wherein a top of the support is provided with a central positioning slot coaxial with a center of rotation of the support, a slot is provided at a position of the moving cutter corresponding to the central positioning slot for the central positioning slot to be exposed upwards, the center of the cover top is provided with a central positioning hole corresponding to the central positioning slot, the central positioning hole is isolated from the multiple hair inlet slots, a positioning pin passing through the central positioning hole and inserted into the central positioning slot is fixed on the cover top, and the positioning pin matches with the central positioning slot and limits lateral swinging of the support; at the same time, the support rotates and floats up and down relative to the positioning pin.

12. The rotary shaving assembly according to claim 11, wherein the positioning pin is located on an inner side of an area enclosed by cover top sections of the multiple hair inlet slots.

13. The rotary shaving assembly according to claim 1, wherein the moving cutter comprises a moving cutter body, a side cutter for laterally cutting the hair in the multiple hair inlet slots on the cover wall is provided on a side of the moving cutter body, an elastic arm fixedly connecting the side cutter and the moving cutter body and elastically pressing the side cutter against an inner wall of the cover wall is provided between the side cutter and the moving cutter body, and the elastic arm and the side cutter are located on an outer side of the support.

14. The rotary shaving assembly according to claim 13, wherein the cover wall has a conical structure, the side cutter being inclined at an angle to a center of rotation thereof and making its path of rotation forming a conical area corresponding to the cover wall, and the elastic arm being inclined and corresponding to the side cutter.

15. The rotary shaving assembly according to claim 13, wherein the side cutter has a side cutting edge, the side cutter being inclined in a direction of rotary cutting, and an included angle (a) between the side cutting edge and the cover wall on its tangent line being an acute angle.

16. The rotary shaving assembly according to claim 13, wherein the elastic arm is of a U-shaped structure.

17. The rotary shaving assembly according to claim 1, wherein the moving cutter comprises a moving cutter body provided only with an upwardly facing top cutter which is exposed above the support and which is used for a rotary cutting of the hair in the multiple hair inlet slots on the cover top.

18. The rotary shaving assembly according to claim 17, wherein the top cutter is provided with a top cutting edge, the top cutter is inclined in a direction of rotary cutting, and an included angle (b) between the top cutting edge and the cover top is an acute angle.

19. The rotary shaving assembly according to claim 1, wherein the cover head is circular in cross-section and the cover wall is of a cylindrical structure or a conical structure, the cover head has an outer diameter (R1) of less than 8 mm when the cover wall is of the cylindrical structure; when the cover wall is of the conical structure, an outer diameter (R2) of the cover top is less than 6 mm and an included angle (D) between the cover wall and a central axis of the cover body is between 5 and 45.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Specific implementation modes of the present invention are described in further detail below with reference to the accompanying letterings, in which:

(2) FIG. 1 is a schematic view of a structure of an implementation of a multi-functional small rotary shaving assembly of the present invention;

(3) FIG. 2 is a side view of a cutter head cover having a tapered structure;

(4) FIG. 3 is a top view of a cutter head cover having a tapered structure;

(5) FIG. 4 is a schematic view of a structure of an embodiment of a moving cutter assembly;

(6) FIG. 5 is schematic view 1 of a structure of an embodiment of a moving cutter;

(7) FIG. 6 is schematic view 2 of a structure of an embodiment of a moving cutter;

(8) FIG. 7 is a bottom view showing a state in which a cutter head cover of a tapered structure is engaged with a moving cutter;

(9) FIG. 8 is a sectional view taken along the direction A-A in FIG. 7;

(10) FIG. 9 is a sectional view taken along the direction B-B in FIG. 8;

(11) FIG. 10 is a bottom view of a multi-functional small rotary shaving assembly of the present invention;

(12) FIG. 11 is a sectional view taken along the direction F-F in FIG. 10;

(13) FIG. 12 is a schematic view showing a structure of a second embodiment of a moving cutter;

(14) FIG. 13 is a schematic view showing a structure of a third embodiment of a moving cutter;

(15) FIG. 14 is a side view of a cutter head cover having a cylindrical structure;

(16) FIG. 15 is a schematic view of a structure of a multi-functional small rotary shaving assembly employing a cutter head cover of a cylindrical structure;

(17) FIG. 16 is a schematic diagram of processing hair inlet slots and horn-shaped hair guiding openings on a cutter head cover.

DETAILED DESCRIPTION OF THE INVENTION

(18) The invention will now be further described with reference to the accompanying letterings.

(19) As shown in FIGS. 1 to 15, a multi-functional small rotary shaving assembly comprises a cutter head cover 1 and a moving cutter assembly 2. The moving cutter assembly 2 comprises a moving cutter 3 and a support 4 for holding the moving cutter 3, the cutter head cover 1 comprises a cover head 11 and a cover body 12 which are integrated up and down, the cover head 11 comprises a cover top 111 and a cover wall 112 connected to the outer side of the cover top 111, the cover top 111 and the cover wall 112 enclose to form one cutting cavity 110 for the moving cutter 3 to rotate inside, and the cover head 11 is provided with multiple hair inlet slots 13 in a circumferential direction for communicating with the inside and the outside of the cover head 11; the multiple hair inlet slots 13 are not connected and independently from each other, and the hair inlet slots 13 crosses from the cover top 111 to the cover wall 112 and pass through the cover top 111 longitudinally and the cover wall 112 transversely at the same time, and a turning joint between the cover top 111 and the cover wall 112 is provided with horn-shaped hair guiding openings 14 which corresponds to the hair inlet slots 13 and which are used for guiding the hair into the hair inlet slots 13. With the width of the adjacent two hair inlet slots 13 at the outer periphery of the cover top 111, the horn-shaped hair guiding openings 14 can be provided to be wider than the hair inlet slots 13, for example, to more than 1.5 times or more than twice the width of the hair inlet slots 13, while designing the hair inlet slots 13 to have an appropriate width to ensure safely. Since the horn-shaped hair guiding openings 14 are provided at the turning joint between the cover top 111 and the cover wall 112, and the horn-shaped hair guiding openings 14 are relatively large, it can guide the hairs into the hair inlet slots 13 from the top, and can guide the hairs into the hair inlet slots 13 from the side, and can guide the hairs in from any inclined direction between the top and the side, so that the hair-inlet efficiency is high, thereby improving the hair-inlet efficiency of the hair inlet slots 13. Moreover, it can be used for the hair inlet of eyebrows, nose hair, and hair short-shaving at the same time so that the shaving and cutting of hairs in different body positions can be realized in combination with the moving cutter assembly 2.

(20) As shown in FIGS. 4 to 11, as an embodiment of the moving cutter 3, the moving cutter 3 comprises a moving cutter body 31, a side cutter 32 for laterally cutting hairs in the hair inlet slots 13 on the cover wall 112 is provided on the side of the moving cutter body 31, an elastic arm 33 fixedly connecting the side cutter 32 and the moving cutter body 31 and elastically pressing the side cutter 32 against an inner wall of the cover wall 112 is provided between the side cutter 32 and the moving cutter body 31, and the elastic arm 33 and the side cutter 32 are located on the outer side of the support 4; an upward top cutter 34 is provided between the inner side of the side cutter 32 and the rotational center of the moving cutter body 31 on the moving cutter body 31, and the top cutter 34 is separated from the side cutter 32 and the elastic arm 33; the top cutter 34 is exposed above the support 4 and is used to cut the hair in the hair inlet slots 13 on the cover top 111. The small rotary shaving assembly has two cutting positions at the same time at the top surface and the side surface. On the basis of realizing hair inlet of multiple body positions, eyebrow trimming, nose hair trimming, head lettering and pattern engraving are integrated to avoid purchasing different types of shaving tools in life, thereby reducing the living cost, saving living space, and greatly facilitating people's lives.

(21) Furthermore, by separately providing the top cutter 34 and the side cutter 32, and elastically pressing the side cutter 32 outwards via the elastic arm 33, the wear compensation of the side cutter 32 is realized, so as to ensure the cutting sharpness. The wear compensation of the top cutter 34 is realized by elastically pressing the moving cutter assembly 2 upwards via an external lifting spring. Therefore, the moving cutter 3 can be directly fixedly connected to the support 4, simplifying the structure of the moving cutter assembly 2. Preferably, the top cutter 34, the side cutter 32, the elastic arm 33, and the moving cutter body 31 are press formed integrally. The moving cutter body 31 is integrally injection-molded with the support 4. The moving cutter assembly 2 is composed of the moving cutter 3 and the support 4 with few members, a simple production process, and low production costs. Furthermore, the assembly production of the moving cutter assembly 2 and the cutter head cover 1 is simple and convenient, which greatly improves production efficiency and reduces costs.

(22) As shown in FIG. 5, as an implementation mode of the elastic arm 33, the elastic arm 33 has a U-shaped structure to facilitate press forming.

(23) The bottom of the support 4 is provided with a driving interface 43 for connecting to an external driving device, and the inner side of the driving interface 43 is provided with a spring placing slot 44 which is concave upward for a lifting spring to be placed.

(24) In an embodiment shown in FIG. 11, the hair inlet slots 13 form a 7-shaped structure by means of a cover top section located on the cover top and a cover wall section located on the cover wall. The horn-shaped hair guiding openings 14 are connected between the cover top section and the cover wall of the hair inlet slots 13, the side cutter 32 is located below the horn-shaped hair guiding openings 14, and the top cutter 34 is located on the inner side of the horn-shaped hair guiding openings 14. An avoiding opening 35 for avoiding the horn-shaped hair guiding openings 14 is formed between the top cutter 34 and the side cutter 32, so as to avoid the top cutter 34 and the side cutter 32 from cutting the skin squeezed in from the horn-shaped hair guiding openings 14, making it have good safety performance.

(25) As shown in an embodiment of FIGS. 7 and 11, the horn-shaped hair guiding openings 14 are located on the outer side of the rotary cutting region S1 of the top cutter 34 to protect the skin. The inner end 13a of the hair inlet slots 13 is located in the rotary cutting region S1 of the top cutter 34, then the top cutter 34 has one section located on the inner side of the inner end 13a of the hair inlet slots 13 to protect the top cutter 34, and the other section is opposite to the hair inlet slots 13 to ensures effective cutting; the horn-shaped hair guiding openings 14 are located above the rotary cutting region S2 of the side cutter 32 to protect the skin, the lower end 13h of the hair inlet slots 13 is located in the rotary cutting region S2 of the side cutter 32, then one section of the side cutter 32 is located below the lower end 13b of the hair inlet slots 13 to protect the side cutter 32, and the other section is opposite to the hair inlet slots 13 to ensure effective cutting.

(26) The side cutter 32 and the elastic arm 33 and the top cutter 34 are respectively provided with two around the rotation direction, which not only ensures the quantity and efficiency of cutting, but can also realize integral forming by pressing.

(27) The top of the support 4 is provided with a central positioning slot 41 coaxial with the center of rotation of the support 4, a slot 36 is provided at a position of the moving cutter 3 corresponding to the central positioning slot 41 for the central positioning slot 41 to be exposed upwards, the center of the cover top 111 is provided with a central positioning hole 15 corresponding to the central positioning slot 41, the central positioning hole 15 is isolated from the hair inlet slots 13, a positioning pin 5 passing through the central positioning hole 15 and inserted into the central positioning slot 41 is fixed on the cover top 111, and the positioning pin 5 matches with the central positioning slot 41 and limits the lateral swinging of the support 4; at the same time, the support 4 rotates and floats up and down relative to the positioning pin 5, so that the moving cutter assembly 2 can rotate more smoothly and steadily in the cutter head cover 1 through the cooperation of the positioning pin 5 and the central positioning slot 41.

(28) As shown in an embodiment of FIGS. 1 and 15, the positioning pin 5 is located on the inner side of an area enclosed by the cover top section of multiple hair inlet slots 13, preventing the top cap of the positioning pin 5 from covering directly above the hair inlet slots 13 which affects hair inlet, and avoiding the occurrence of hair-tearing.

(29) However, in order to better position the moving cutter assembly 2 inside the cutter head cover 1, the support 4 is provided along its circumferential direction with multiple positioning posts 42 capable of reclining against the inner wall of the cutter head cover 1 for rotational positioning.

(30) In order to improve the accuracy of trimming, as shown in embodiments shown in FIGS. 1-11, the cover wall 112 is of a conical structure, the side cutter 32 is inclined at a certain angle with respect to the center of rotation thereof and the rotation path forms a conical region corresponding to the cover wall 112, the elastic arm 33 is inclined and corresponds to the side cutter 32, and the cover head 11 of a conical structure can be made small at the top end. Preferably, the outer diameter R2 of the cover top 111 is less than 6 mm, preferably the outer diameter R2 is less than 4 mm, and the included angle D between the cover wall 112 and the central axis is between 5 and 45. The included angle D is preferably between 10 and 40. Certainly, it may be further optimized between 20 and 30 to allow a more precise cutting position when shaving, and also to facilitate the insertion into a nostril and the nose hair feeding hair from the tapered bevel and the top surface.

(31) The distance c between the side cutters 32 in the natural state and the center of rotation of the side cutters 32 is less than 5 mm. Preferably, c<4 mm, which is adjusted according to the inner diameter of the cover wall 112, and there is always a pre-pressure between the side cutter 32 and the cover wall 112 after the side cutter 32 is mounted in the cover wall 112.

(32) Also, when two or more side cutters 32 and the elastic arms 33 are provided, the cover wall 112 of the tapered structure is combined with the side cutter 32 and the elastic arm 33, and the side cutter 32 can automatically compensate for wear and abut against the cover wall 112, and automatically center.

(33) Of course, as shown in FIGS. 14 and 15, as another implementation mode of the cutter head cover 1, the cover head 11 adopts a cylindrical structure, namely, the cover wall 112 is a cylindrical structure, and the outer diameter R1 of the cover head 11 is less than 8 mm. Preferably the outer diameter R1 is less than 6 mm, and the optimal outer diameter R1<4 mm, so as to accurately trim and shape hairs, and insert the same into the nostril; the cylindrical structure has a draft angle of 1 to 3 in order to facilitate press forming draft.

(34) In order to improve the sharpness of the side cut, as shown in FIG. 9, the side cutter 32 is inclined in the direction of the rotary cut, and the included angle a between the side cutting edge 321 of the side cutter 32 and the cover wall 112 on its tangent line is an acute angle, the included angle a being between 20 and 80, preferably between 40 and 60.

(35) In order to improve the sharpness of the top surface cutting, as shown in FIG. 8, the top cutter 34 is inclined in the rotatory cutting direction, and the included angle h between the top cutting edge 341 of the top cutter 34 and the cover top 111 is an acute angle, the included angle b being between 20 and 80, preferably between 40 and 60.

(36) As shown in embodiments of FIG. 1, FIG. 3, FIG. 7, and FIG. 15, the horn-shaped hair guiding openings 14 have a V-shaped structure facing outward obliquely upward, and respectively form a Y-shaped structure with the hair inlet slot 13 at the cover top 111 and the hair inlet slot 13 at the cover wall 112. Therefore, when feeding hair to the top, it decreases from the outer side to the inner side, and when feeding hair to the side, it becomes smaller from the top to the bottom, while ensuring that both the top surface and the side surface have a good hair feeding effect. Furthermore, it can be machined by one grinding wheel at one time, so that the machining process is simplified.

(37) Since the cover top 111 is relatively small, the cover top 111 adopts a flat-top structure or an outwardly convex spherical arc-shaped structure, which is simple in structure and easy to manufacture and process.

(38) The hair inlet slot 13 is opened in the radial direction of the cover head 11, and multiple hair inlet slots 13 are evenly distributed in the circumferential direction of the cover head 11, which is simple in structure and convenient for machining.

(39) As shown in FIG. 12, as another embodiment of the moving cutter 3, the moving cutter 3 may have only a side cutting, and the moving cutter 3 comprises a moving cutter body 31. A side cutter 32 for laterally cutting hairs in the hair inlet slot 13 on the cover wall 112 is provided on the side of the moving cutter body 31, an elastic arm 33 fixedly connecting the side cutter 32 and the moving cutter body 31 and elastically pressing the side cutter 32 against an inner wall of the cover wall 112 is provided between the side cutter 32 and the moving cutter body 31, and the elastic arm 33 and the side cutter 32 are located on the outer side of the support 4.

(40) As shown in FIG. 13, as a third embodiment of the moving cutter 3, the moving cutter 3 may have only a top surface cutting, and the moving cutter body 31 is provided with an upward facing top cutter 34 between the inner side of the side cutter 32 and the rotation center of the moving cutter body 31, and the top cutter 34 is exposed above the support 4 and is used to cut hairs in the hair inlet slot 13 on the cover top 111.

(41) As shown in FIG. 16, a processing principle of hair inlet slots and horn-shaped hair guiding openings on a cutter head cover is provided: after a cutter head cover body 10 with a lower end opening is punched, a profiling grinding wheel 6 is used to cut a slot between the cover top 111 and the cover wall 112, wherein the profiling grinding wheel 6 comprises an outer ring wheel 61 and an inner ring wheel 62 which are coaxially arranged; the inner ring wheel 62 is located on the inner side of the outer ring wheel 61, and the thickness of the inner ring wheel 62 is greater than that of the outer ring wheel 61, and a chamfer 63 is provided between said inner ring wheel 62 and the outer ring wheel 61 so as to smoothly transition the two; when cutting the hair inlet slot 13, the cutter head cover body 10 is provided obliquely below the profiling grinding wheel 6, and the cutter head cover body 10 is moved relative to the rotating profiling grinding wheel 6; during the feeding process, the 7-shaped hair inlet slot 13 is simultaneously cut on the cover top 111 and the cover wall 112 from obliquely above by means of the outer ring wheel 61; when the feeding proceeds to the chamfer 63, the horn-shaped hair guiding opening 14 is cut out by the chamfer 63 which cutting out a part of the material of the cutter head cover body 10 located on both sides of hair inlet slots 13 at the turning joint between the cover top 111 and the cover wall 112; one hair inlet slot 13 and the corresponding horn-shaped hair guiding opening 14 are completed in one processing: the cutter head cover body 10 is withdrawn relative to the outer profiling grinding wheel 6; rotating one angle is performed to continue the next cutting of the hair inlet slot 13 and the horn-shaped hair guiding opening 14 until all the outer hair inlet slots 13 and outer horn-shaped hair guiding openings 14 are completed, finally, the outer surface edges of the hair inlet slots 13 and the horn-shaped hair guiding openings 14 are polished. The processing method has a simple process and high processing efficiency.