Rotary body hair cutter

Abstract

The present invention relates to a simple rotary body hair cutter which is separated and assembled. According to the embodiment of the present invention, the present invention has an effect that the first cutting part and the second cutting part are easily and simply combined by a forcible insertion method without an additional fastening unit, and the first cutting part and the second cutting part are easily and simply separated after use. Also, according to the embodiment of the present invention, the present invention has an effect that a loss accident can be significantly reduced by forming a structure of a rotation preventing protrusion which restricts rotation from a bottom surface.

Description

Technical Field

[0001] This invention relates to a rotary hair cutter that is easy to separate and assemble. Background Technology

[0002] Normally, there are multiple nasal hairs of varying lengths inside the human nostrils. These nasal hairs function to filter out external dust and other pollutants from flowing into the human respiratory system.

[0003] On the other hand, recently, nose hair protruding from the nostrils has been considered unhygienic, leading to the development of various nose hair trimmers. For example, such a nose hair trimmer can be used as a nose hair trimmer.

[0004] These nose hair trimmers are easy to use, but they cannot visually inspect the inside of one's nostrils. The design of these trimmers also presents a drawback: when trimming nose hairs, they may cause wounds of varying sizes in the nostrils.

[0005] Therefore, in order to solve this problem, a "powered body hair cutter" has recently been developed. The powered body hair cutter includes: an outer head with multiple outer cutting blades; an inner cutting blade with multiple inner cutting blades; and a fastening screw for fastening the inner head and the outer head.

[0006] When grooming nose hairs, this electric trimmer improves the stability and convenience of nose hair trimmers through a structure in which the outer head rotates electrically from the inner head.

[0007] However, in the case of the aforementioned electric body hair cutter, the assembly and disassembly are troublesome due to the structure of the inner and outer heads combined with the fastening unit via fastening screws, etc. There is a concern that the fastening unit may be frequently lost during assembly or disassembly, and if the fastening unit is lost, the entire product needs to be replaced.

[0008] Existing technical documents

[0009] Patent documents

[0010] Patent Document 0001: Korean Utility Model Authorization No. 20-0310081 (Authorization Date: March 28, 2003) Summary of the Invention

[0011] In response to this, the present invention is proposed under the aforementioned background technology. The purpose of the present invention is to provide a rotary body hair cutter that allows the first cutting part and the second cutting part to be easily joined by a forced snap-fit ​​method without the need for an additional fastening unit. Moreover, the first cutting part and the second cutting part can be easily separated after use.

[0012] Furthermore, the object of the present invention is to provide a body hair cutter that significantly reduces the risk of loss by forming an anti-rotation protrusion in a manner that restricts rotation from the bottom surface.

[0013] The purpose of this invention is not limited thereto, and those skilled in the art will clearly understand other purposes not mentioned from the following description.

[0014] To address this problem, embodiments of the present invention provide a rotary body hair cutter, characterized in that it includes: a holding portion; a first cutting portion disposed on the upper side of the holding portion, having a first cutting edge formed at its upper end; and a second cutting portion inserted outward of the first cutting portion, having its inner circumferential surface combined with the holding portion, having a second cutting edge formed at its upper end that rotates relative to the first cutting edge to cut body hair. The holding portion includes: a holding body portion disposed on the upper side of the holding body portion, having the first cutting portion disposed on its upper side; and a protruding connecting portion protruding from the upper side of the holding body portion along the circumferential direction of the outer circumferential surface of the first cutting portion, wherein the second cutting portion is forcibly fastened in a manner that allows it to be separated, and the second cutting portion is rotatably restricted.

[0015] According to embodiments of the present invention, the present invention has the following effects: without additional fastening units, the first cutting part and the second cutting part can be easily joined by a forced snap-fit ​​method; moreover, after use, the first cutting part and the second cutting part can be easily separated.

[0016] Furthermore, according to embodiments of the present invention, the present invention has the following effect: by forming an anti-rotation protrusion structure in a manner that restricts rotation from the bottom surface, loss accidents can be significantly reduced.

[0017] The effects of this invention are not limited to those mentioned above. Those skilled in the art to which this invention pertains can clearly understand other effects not mentioned from the description of the scope of protection of the invention. Attached Figure Description

[0018] Figure 1 This is a perspective view of a rotary hair cutter according to an embodiment of the present invention.

[0019] Figure 2 This is an exploded perspective view of a rotary hair cutter according to an embodiment of the present invention.

[0020] Figure 3 To show in magnified form Figure 2 An enlarged view of region A.

[0021] Figure 4 A longitudinal sectional view showing the internal structure of a rotary hair cutter according to an embodiment of the present invention.

[0022] Figure 5 To show in magnified form Figure 4 A magnified view of region B.

[0023] Figure 6 To show in magnified form Figure 4 A magnified view of region C.

[0024] Figure 7 This diagram illustrates the internal structure of the gripping portion and the second cutting portion when combined according to an embodiment of the present invention.

[0025] Figure 8 A longitudinal sectional view illustrating the internal structure of a rotary hair cutter according to another embodiment of the present invention.

[0026] Figure 9 To show in magnified form Figure 8 A magnified view of region D.

[0027] Explanation of reference numerals in the attached figures

[0028] 10: Rotary hair cutter

[0029] 100, 100': Control section

[0030] 110, 110': Holding the main body

[0031] 111: Insertion Hole

[0032] 112: Reception Container

[0033] 113: Protruding joint hole

[0034] 114: Combined protrusion

[0035] 120: Highlight the joint

[0036] 121: Containment Space

[0037] 122: Fastening part

[0038] 122a: First inclined surface

[0039] 122b: Second inclined surface

[0040] 123: Gap

[0041] 130: Anti-rotation protrusion

[0042] 140: Highlight the combination of tablets

[0043] 141: Fastening protrusion

[0044] 141a: First inclined surface

[0045] 141b: Second inclined surface

[0046] 200: First cutting section

[0047] 210: First cutting edge

[0048] 300: Second cutting section

[0049] 310: Second cutting edge

[0050] 320: Hollow

[0051] 321: Support surface

[0052] 330: Rotary joint

[0053] 331: Fastening part

[0054] 331a: First conical surface

[0055] 331b: Second conical surface

[0056] 400: cover

[0057] 410: Containment Container

[0058] 411: Thread

[0059] 420: Exhaust port

[0060] 500: Body Hair Removal Department

[0061] 510: Remove the main body

[0062] 520: Remove brush

[0063] 600: Elastic component Detailed Implementation

[0064] Hereinafter, some embodiments of the present invention will be described in detail with reference to the illustrative drawings. In assigning reference numerals to the structural elements of the various drawings, it should be noted that, even when presented in different drawings, the same reference numerals should be assigned to the same structural elements as much as possible. Furthermore, in describing the present invention, detailed descriptions of the same known structures or functions will be omitted if it is determined that a specific description of the same known structure or function would obscure the gist of the invention.

[0065] Furthermore, in describing the structural elements of the present invention, terms such as first, second, A, B, (A), (B), etc., may be used. These terms are only used to distinguish between two structural elements, and the nature, sequence, or order of the corresponding structural elements are not limited to these structural elements. When a structural element is "connected," "combined," or "linked" with other structural elements, a structural element may be directly connected or linked with other structural elements, or it may be "connected," "combined," or "linked" between various structural elements.

[0066] This invention is a perspective view of a rotary body hair cutter according to an embodiment of the invention. Figure 2 This is an exploded perspective view of a rotary hair cutter according to an embodiment of the present invention. Figure 3 To show in magnified form Figure 2 An enlarged view of region A. Figure 4 A longitudinal sectional view showing the internal structure of a rotary hair cutter according to an embodiment of the present invention. Figure 5 To show in magnified form Figure 4 A magnified view of region B. Figure 6 To show in magnified form Figure 4 A magnified view of region C. Figure 7 This diagram illustrates the internal structure of the gripping portion and the second cutting portion when combined according to an embodiment of the present invention. Figure 8 A longitudinal sectional view illustrating the internal structure of a rotary hair cutter according to another embodiment of the present invention. Figure 9 To show in magnified form Figure 8 A magnified view of region D.

[0067] As shown in the figure, a rotary hair cutter 10 according to an embodiment of the present invention includes: a holding part 100; a first cutting part 200 disposed on the upper side of the holding part 100, having a first cutting edge 210 formed at its upper end; and a second cutting part 300 inserted into the outer side of the first cutting part 200, with its inner circumferential surface combined with the holding part 100, having a second cutting edge 310 formed at its upper end that rotates relative to the first cutting edge 210 to cut hair. The holding part 100 includes a holding body part 110, on which the first cutting part 200 is disposed; and a protruding connecting part 120 protruding from the upper side of the holding body part 110 along the circumferential direction of the outer circumferential surface of the first cutting part 200, which is fastened by a forced snap-fit ​​method in a manner that allows the second cutting part 300 to be separated, thereby restricting the second cutting part 300 in a rotatable manner.

[0068] First, the upper side of the holding part 100 is combined with the first cutting part 200 and the second cutting part 300.

[0069] This gripping part 100 includes: a gripping body part 110, which is combined with the first cutting part 200; and a protruding connecting part 120, which is combined with the second cutting part 300 in a separable manner.

[0070] The gripping body 110 is roughly cylindrical in shape so that it can be easily gripped, and a first cutting part 200 and a second cutting part 300 are provided on the upper side.

[0071] The holding body part 110 has an insertion hole 111 formed on its upper side to allow the first cutting part 200 to be inserted inward, and a receiving groove 112 formed on its lower side to communicate with the insertion hole 111 and to receive at least a portion of the hair removal part 500.

[0072] Furthermore, the holding body 110 forms a protrusion engagement hole 113 on its outer peripheral surface for inserting the anti-rotation protrusion 130, which will be described later.

[0073] Next, the protruding joint 120 is formed on the upper side of the holding body part 110.

[0074] The protruding joint 120 is formed protruding in the direction around the outer peripheral surface of the first cutting portion 200, and the second cutting portion 300 is rotatably restricted on the outside of the first cutting portion 200.

[0075] That is, the protruding joint 120 can be in the form of a cylindrical shape that forms a receiving space 121 inside, in such a way that the first cutting part 200 is arranged on the inside.

[0076] In this case, when the protruding joint 120 is joined with the second cutting part 300, a portion of it can be deformed inward in the upward radial direction to form a gap S1 that is separated from the first cutting part 200 by a predetermined interval.

[0077] Furthermore, the protruding joint 120 secures the second cutting part 300 by forceful snap-fit ​​in a manner that allows for easy assembly and disassembly.

[0078] To explain the structure of the protruding joint 120 more specifically, the protruding joint 120 protrudes or recesses along the outer peripheral surface to form a fastening part 122 that engages with the inner peripheral surface of the second cutting part 300, so that the second cutting part 300 is inserted and fastened by a forced snap-fit ​​method.

[0079] As an example, as shown in the figure, the fastening part 122 can be formed by protruding along the circumferential direction on the upper outer peripheral surface of the protruding joint part 120.

[0080] Furthermore, the fastening part 122 forms inclined surfaces 122a and 122b on one or more of the upper and lower side corners in such a way that the second cutting part 300 can be detached and installed.

[0081] The figure shows an example in which a first inclined surface 122a is formed at the upper corner of the fastening part 122, and a second inclined surface 122b is formed at the lower corner.

[0082] On the other hand, when the fastening part 122 is in close contact with the second cutting part 300, the protruding joining part 120 deforms a portion of the area toward the inner side in the radial direction and forms at least one or more gaps 123 in a manner that combines with or separates from the second cutting part 300.

[0083] The gap 123 is formed such that it extends along the length of the protruding joint 120.

[0084] That is, when the inner circumferential surface of the second cutting portion 300 is in close contact, the designated area of ​​the protruding joint portion 120 can be elastically deformed along the radial direction inward and then elastically deformed again in the radial direction outward to join or separate from the second cutting portion 300.

[0085] Multiple slits 123 may be formed at equal intervals around the protruding joint 120.

[0086] As described above, in the protruding joint portion 120 of one embodiment of the present invention, inclined portions 122a and 122b are formed at the upper and lower corners of the fastening portion 122, and a plurality of gaps 123 are formed along the periphery. Thus, when it is in close contact with the inner peripheral surface of the second cutting portion 300, as the specified area undergoes elastic deformation along the inner and outer sides in the radial direction, it can be easily joined and separated from the second cutting portion 300 by forcibly snapping in without the need for additional joining units.

[0087] On the other hand, the gripping portion 100 of one embodiment of the present invention also includes an anti-rotation protrusion 130 formed protruding from the outer peripheral surface of the gripping body portion 110 to restrict rotation from the bottom surface.

[0088] The anti-rotation protrusion 130 is inserted into the protrusion engagement hole 113 of the gripping body part 110, and at least a portion of it protrudes from the outer peripheral surface of the gripping body part 110.

[0089] As described above, the grip portion 100 of one embodiment of the present invention includes an anti-rotation protrusion 130, thereby significantly reducing the risk of loss as rotation is restricted from the flat bottom surface.

[0090] Next, the first cutting part 200 of an embodiment of the present invention is inserted into and fixed in the insertion hole 111 of the holding body part 110.

[0091] The first cutting part 200 rotatably supports the second cutting part 300 on the inner side of the second cutting part 300.

[0092] Furthermore, the first cutting section 200 forms a first cutting edge 210 at its upper end.

[0093] Multiple first cutting edges 210 are formed at equal intervals around the outer peripheral surface of the first cutting portion 200.

[0094] Among them, the width of each first cutting edge 210 gradually decreases as it gets closer to the end, thus forming an inclined inner corner cutting edge.

[0095] As described above, the cutting efficiency of hair-like materials is improved as the corner portions of each first cutting edge 210 are inclined.

[0096] Next, in the second cutting portion 300 of an embodiment of the present invention, the hollow portion 320 is formed in a way that extends along the length direction, so that it can be inserted into the outside of the first cutting portion 200 in a rotatable manner.

[0097] Furthermore, the second cutting part 300 is combined with the holding part 100 by forcibly snapping it in.

[0098] More specifically, the inner circumferential surface of the second cutting portion 300 can be rotatably engaged with the protruding joint portion 120 by means of forced snap-fit, thereby being rotatably restricted from the protruding joint portion 120.

[0099] To explain the structure of the second cutting portion 300 more specifically, the second cutting portion 300 forms a rotating joint portion 330 at its lower end, which is recessed from the hollow 320 along the radial direction to join with the outer side of the protruding joint portion 120.

[0100] The second cutting portion 300 protrudes or recesses along the inner circumferential surface and is engaged with the fastening portion 331 by the fastening portion 122. After being fastened to the protruding joint portion 120, it is restricted in a rotatable manner.

[0101] The fastening portion 331 may be formed by protruding or recessing from the inner peripheral surface of the rotating joint portion 300.

[0102] The figure shows an example where a fastening part 122 protrudes from the outer peripheral surface of the protruding joint 120 to form a fastening part 122, and a snap-fit ​​part 331 protrudes from the inner peripheral surface of the rotating joint 300 along the radial direction to form an inner side.

[0103] The fastening part 331 has a first conical surface 331a at the upper side corner and a second conical surface 331b at the lower side corner, so that it can be assembled and separated from the protruding joint part 120 by means of forced fastening.

[0104] When the first conical surface 331a separates from the protruding joint 120, it is in close contact with the second inclined surface 122b of the fastening part 122.

[0105] In this case, in the protruding joint 120, the specified area (upper side) elastically deforms inward along the radial direction.

[0106] Furthermore, when the second conical surface 331b is combined with the protruding joint 120, it is tightly attached to the first inclined surface 122a of the fastening part 122.

[0107] In this case, in the protruding joint 120, after elastic deformation along the radial direction in the designated area (upper side), it elastically deforms again in the radial direction to the outer side to engage with the rotating joint 330.

[0108] As described above, a fastening portion 331 is formed on the inner peripheral surface of the second cutting portion 300, and tapered surfaces 331a and 331b are formed on the upper and lower corners of the fastening portion 331. Thus, in one embodiment of the present invention, when engaged, the second cutting portion 300 is rotatably restricted from the holding portion 100. The second cutting portion 300 can be easily assembled to the holding portion 100 by force-fastening or can be easily separated from the holding portion 100.

[0109] On the other hand, the second cutting portion 300 forms a support surface 321, and a portion of the inner peripheral surface of the hollow portion 320 protrudes from the hollow portion 320 in a radially inward direction at a predetermined interval from the first cutting portion 200 and is rotatably supported by the outer peripheral surface of the first cutting portion 200.

[0110] As described above, the support surface 321 is supported by the first cutting portion 200 to form a gap S2 between the first cutting portion 200 and the second cutting portion 300. In one embodiment of the present invention, the area of ​​the first cutting portion 200 and the second cutting portion 300 in close contact can be reduced to significantly reduce the friction that occurs when the second cutting portion 300 rotates.

[0111] On the other hand, a second cutting edge 310 is formed at the upper end of the second cutting section 300 to rotate relative to the first cutting edge 210 to cut body hair.

[0112] Multiple second cutting edges 310 are formed at equal intervals around the outer peripheral surface of the second cutting portion 300.

[0113] That is, after the second cutting part 300 is inserted into the user's nostril, it rotates around the first cutting part 200 to cut the user's nose hair (body hair).

[0114] Among them, the width of each second cutting edge 310 gradually decreases as it gets closer to the end, thus forming an inclined outer corner cutting edge.

[0115] As described above, the cutting efficiency of body hair is improved as the corner portions of each second cutting edge 310 are inclined.

[0116] On the other hand, the rotary hair cutter 10 of one embodiment of the present invention also includes a cover 400, which is inserted into the outside of the second cutting section 300 and is detachably combined with the holding body 110 so as to selectively open and close the first cutting section 200 and the second cutting section 300.

[0117] Inside the cover 400, a receiving groove 410 for receiving the first cutting part 200 and the second cutting part 300 is formed in a manner that extends along the length direction.

[0118] The aforementioned cover 400 is connected to the holding body 110 via a groove or protrusion structure or by a thread.

[0119] As an example, as shown in the figure, the cover portion 400 has a thread 411 formed on its inner circumferential surface, so that it can be threadedly engaged with the outer circumferential surface of the holding body portion 110.

[0120] Furthermore, the cover 400 includes a vent 420 that discharges internal air to the outside when inserted into the outside of the second cut portion 300.

[0121] The vent 420 is formed through the upper side of the cover 400 in a manner that communicates with the receiving groove 410.

[0122] As described above, the cover portion 400 of the present invention may have an exhaust hole 420 formed on the upper side and a thread 411 formed on the inner circumferential surface, thereby allowing it to be easily inserted into the outside of the second cutting portion 300 to easily and conveniently engage with the holding portion 100.

[0123] On the other hand, the rotary hair cutter 10 of one embodiment of the present invention also includes a hair removal section 500, which is combined with the lower side of the holding body section 110 for removing hair from the first cutting section 200 and the second cutting section 300.

[0124] The body hair removal unit 500 includes: a removal body 510, which is detachably attached to the lower side of the holding body 110; and a removal brush 520, which is disposed on the upper side of the removal body 510 to remove body hair attached to the first cutting part 200 and the second cutting part 300.

[0125] As described above, in one embodiment of the present invention provided with the body hair removal part 500, after use, after separating the first cutting part 200 and the second cutting part 300, the body hair attached to the outside of the first cutting edge 210 and the second cutting edge 310 can be easily removed by the removal brush 520.

[0126] on the other hand, Figure 8 and Figure 9 A diagram showing the internal structure of a rotary hair cutter 20 according to another embodiment of the present invention.

[0127] Figure 8 and Figure 9 The other embodiment of the present invention shown also has the same structural elements as the above-described embodiment of the present invention, and the shape and function of each structural element are also the same.

[0128] However, in another embodiment of the present invention, instead of the protruding connecting portion 120, a protruding connecting piece 140 is provided in the holding portion 100'.

[0129] More specifically, in another embodiment of the present invention, the gripping portion 100' includes: a gripping body portion 110' with a first cutting portion 200 disposed on its upper side; and a plurality of protruding connecting pieces 140 disposed on the upper side of the gripping body portion 110' along the circumferential direction of the outer peripheral surface of the first cutting portion 200, and rotatably engaging with the upper side of the gripping body portion 110' to fasten the second cutting portion 300 apart, thereby rotatably restricting the second cutting portion 300.

[0130] On the upper side of the holding body portion 110', a plurality of connecting protrusions 114 are formed at equal intervals along the direction around the outer peripheral surface of the first cutting portion 200.

[0131] Multiple protruding tabs 140 are rotatably coupled to the coupling protrusions 114.

[0132] Next, the lower ends of the multiple protruding connecting pieces 140 are engaged with the connecting protrusions 114, and are rotatably arranged on the outer and inner sides of the holding body part 110' in the radial direction, with the hinge axis H as the reference.

[0133] That is, the lower end of the protruding connecting piece 140 is rotatably connected to the connecting protrusion 114, thereby restricting the second cutting portion 300, which is fastened by force, in a rotatable manner.

[0134] Each of the protruding connecting pieces 140 includes a fastening protrusion 141 that engages with the inner circumferential surface of the second cutting portion 300, so that the second cutting portion 300 is inserted and fastened by a forced snap-fit ​​method.

[0135] Among them, a plurality of fastening protrusions 141 are formed on the upper side of the protruding connecting piece 140, protruding in the direction toward the inner peripheral surface of the second cutting part 300. When the second cutting part 300 is engaged, it is locked with the fastening part 331 and the second cutting part 300 is rotatably restricted.

[0136] In the fastening protrusion 141, a first inclined surface 141a is formed on the upper side corner and a second inclined surface 141b is formed on the lower side corner in a manner that allows for the detachable second cutting part 400.

[0137] When the second cutting part 300 is inserted outward, the first inclined surface 141a is in close contact with the second conical surface 331b of the fastening part 331.

[0138] In this case, the protruding connecting piece 140 rotates inward in the radial direction of the holding body part 110' with the hinge axis H as the reference, and then rotates outward in the radial direction to engage with the second cutting part 300.

[0139] Furthermore, when the second cutting portion 300 separates, the second inclined surface 141b is in close contact with the first conical surface 331a of the fastening portion 331.

[0140] In this case, the protruding connecting piece 140 rotates inward in the radial direction of the holding body part 110' with the hinge axis H as the reference, and then separates from the second cutting part 300.

[0141] On the other hand, another embodiment of the present invention also includes an elastic member 600, which is combined with the hinge axis H, with one end supported by a protruding connecting piece 140 and the other end supported by a connecting protrusion 114. With the hinge axis H as a reference, the protruding connecting piece 140 is provided with elastic force in a way that rotates the protruding connecting piece 140 in a direction that is in close contact with the second cutting portion 300.

[0142] After the second cutting portion 300 is inserted into the outside of the protruding connecting piece 140, the elastic member 600 uses elastic force to make the protruding connecting piece 140 rotate about the hinge axis H in such a way that the fastening protrusion 141 and the fastening portion 331 are locked.

[0143] As an example, the elastic component 600 can be formed by a torsion spring.

[0144] As described above, in another embodiment of the present invention, a plurality of protruding connecting pieces 140 are rotatably connected to the upper side of the holding body portion 110', and an elastic member 600 is provided to provide elastic force in such a way as to lock the fastening protrusion 141 and the fastening portion 331, so that the holding portion 100' and the second cutting portion 300 can be easily connected and separated.

[0145] As described above, according to the embodiments of the present invention, the present invention has the following effects: without additional fastening units, the first cutting part 200 and the second cutting part 300 can be easily and conveniently joined by a forced snap-fit ​​method; moreover, after use, the first cutting part 200 and the second cutting part 300 can be easily and conveniently separated.

[0146] Furthermore, according to embodiments of the present invention, the present invention has the following effect: by providing the anti-rotation protrusion 130 in a manner that restricts rotation from the bottom surface, loss accidents can be significantly reduced.

[0147] The above description illustrates that all structural elements constituting the embodiments of the present invention are combined in one or more ways to operate, but the present invention is not limited to such embodiments. That is, within the scope of the present invention, all structural elements can be selectively combined in more than one way to operate.

[0148] Furthermore, unless otherwise specifically objected, the terms "comprising," "constituting," or "having," etc., used above imply that corresponding structural elements can be built in, and therefore mean that other structural elements may be included, rather than excluding them. Unless otherwise defined, all terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms commonly used as defined in dictionaries have the same meaning as those in the context of the relevant art, and unless explicitly defined in this invention, they cannot be interpreted as having an abnormal or excessive meaning.

[0149] The above description is merely an illustrative explanation of the technical concept of the present invention. Anyone skilled in the art can make various modifications and variations without exceeding the essential characteristics of the present invention.

[0150] Therefore, the embodiments disclosed in this invention are for illustrative purposes only and are not intended to limit the technical concept of the invention. The scope of the technical concept of the invention is not limited to these embodiments. The scope of protection of this invention is explained by the following claims, and all technical concepts within the equivalent scope are included within the scope of the claims of this invention.

Claims

1. A rotary body hair cutter, characterized in that, include: Control Department; A first cutting portion, confined to the upper side of the aforementioned holding portion, has a first cutting edge formed at its upper end; and The second cutting part is inserted outward from the first cutting part, and its inner circumferential surface is combined with the holding part. A second cutting edge is formed at the upper end that rotates with the first cutting edge to cut body hair. The aforementioned control unit includes: The main body is held in place, and the aforementioned first cutting portion is disposed on its upper side; and The protruding joint is confined to the upper side of the aforementioned gripping body portion, protruding along the outer peripheral surface of the aforementioned first cutting portion, and is fastened by a forced snap-fit ​​method in a manner that allows the aforementioned second cutting portion to be separated, and is confined in a rotatable manner. The aforementioned protruding joint extends along the outer peripheral surface to form a fastening portion that engages with the inner peripheral surface of the aforementioned second cutting portion, so that the aforementioned second cutting portion is inserted and fastened by a forced snap-fit ​​method. The aforementioned fastening part forms a first inclined surface and a second inclined surface at the upper and lower side corners in a manner that allows for the detachment and installation of the aforementioned second cutting part. The aforementioned second cutting portion protrudes along its inner circumferential surface to form a fastening portion that engages with the aforementioned fastening portion. After being fastened to the aforementioned protruding joint portion, it is restricted in a rotatable manner. The aforementioned fastening part forms a first conical surface at the upper corner and a second conical surface at the lower corner, allowing it to be assembled or separated from the protruding joint by forceful fastening. The aforementioned protruding joint forms at least one gap. When the aforementioned second cutting portion separates from the aforementioned protruding joint, the aforementioned first conical surface is in close contact with the aforementioned second inclined surface, and a portion of the aforementioned protruding joint elastically deforms inward along the radial direction. When the aforementioned second cutting portion is combined with the aforementioned protruding joint, the aforementioned second conical surface is in close contact with the aforementioned first inclined surface, and the aforementioned portion of the aforementioned protruding joint elastically deforms inward along the radial direction, returning to the initial outward position.

2. The rotary hair cutter according to claim 1, characterized in that, Multiple of the aforementioned gaps are formed at equal intervals around the aforementioned protruding joint.

3. The rotary hair cutter according to claim 1, characterized in that, The aforementioned grip portion also includes an anti-rotation protrusion, which protrudes from the outer peripheral surface of the aforementioned grip body portion in a manner that restricts rotation from the bottom surface.

4. The rotary hair cutter according to claim 1, characterized in that, It also includes a cover that is inserted into the outside of the second cutting portion and is detachably combined with the gripping body portion so as to selectively open and close the first cutting portion and the second cutting portion.

5. The rotary hair cutter according to claim 4, characterized in that, The aforementioned cover is connected to the aforementioned gripping body via a groove, protrusion structure, or threaded connection.

6. The rotary hair cutter according to claim 4, characterized in that, The aforementioned cover includes a vent hole, which discharges internal air to the outside when inserted into the outer side of the aforementioned second cut portion.

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