A rotary hair clipper blade

Abstract

The present invention discloses a rotary hair trimmer cutter head, which comprises an annular fixed cutter (1) having an inner ring fixed tooth (111) and an outer ring fixed tooth (112); a round cover type inner net cover fixed cutter (3) installed in the area surrounded by the inner ring fixed teeth (111) of the annular fixed cutter (1); a moving cutter turntable frame (4) installed in the annular fixed cutter (1) and capable of circumferentially rotating under drive, an annular moving cutter (2) having an inner ring moving tooth (211) and an outer ring moving tooth (212) which are adapted to the shape and size of the annular fixed cutter (1) is installed on its outer ring, and a fixed cutter inner moving blade (5) for trimming the hair entering from the round cover type inner net cover fixed cutter (3) is installed on its inner ring; and a base (6), which assembles the above-mentioned annular fixed cutter (1) and the moving cutter turntable frame (4) and forms a hair trimming structure with the two distributed up and down. The advantages are: it supports trimming hair at multiple angles and has a good trimming effect.

Description

Technical Field

[0001] The present invention relates to a rotary hair trimmer head. Background Art

[0002] In the existing prior art, hair trimmers basically adopt a net cover and an internal sheet blade or a net cover and an internal grab-type cutter head. Such trimmers have the situation that they do not meet the requirement of trimming hair at an angle. There is an urgent need for a new-structured net cover type trimmer that can trim hair and support multi-angle trimming. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a rotary hair trimmer head with good trimming effect and capable of trimming hair at an angle.

[0004] To solve the above technical problem, the technical solution provided by the present invention is: a rotary hair trimmer head, which includes an annular fixed cutter having inner ring fixed teeth and outer ring fixed teeth; a round cover type inner net cover fixed cutter installed in the area surrounded by the inner ring fixed teeth of the annular fixed cutter; a moving cutter turntable frame installed in the annular fixed cutter and capable of circumferentially rotating under drive, on the outer ring of which an annular moving cutter having inner ring moving teeth and outer ring moving teeth and adapted to the shape and size of the annular fixed cutter is installed, and on the inner ring of which a fixed cutter inner moving blade for trimming the hair entering from the round cover type inner net cover fixed cutter is installed; and a base for assembling the above annular fixed cutter and moving cutter turntable frame and forming a hair trimming structure with the two distributed up and down.

[0005] Further, at least two fixed cutter clamping blocks facing the center of the annular fixed cutter are provided at the inner edge of the annular fixed cutter where the inner ring fixed teeth are located; at least two spaced-apart fixed cutter slots corresponding to and capable of forming a tightening type clamping connection with the fixed cutter clamping blocks are provided on the outer peripheral edge of the round cover type inner net cover fixed cutter.

[0006] Further, the round cover type inner net cover fixed cutter is a raised mesh type round cover body with a high middle and low sides; the fixed cutter inner moving blade is inserted and installed in the projection area of the mesh type round cover body on the moving cutter turntable frame, and the cutting edge of the fixed cutter inner moving blade is close to the inner surface of the mesh type round cover body with a high middle and low sides with one end high and the other end low.

[0007] Further, it further includes a moving cutter elastic sheet frame located between the moving cutter turntable frame and the base; the moving cutter elastic sheet frame includes a frame body supported on the base, a moving cutter lower floating support elastic sheet connected to the frame body and higher than the frame body, and a moving cutter upper floating trigger elastic sheet higher than or flush with the moving cutter lower floating support part; the lower part of the fixed cutter inner moving blade is inserted through the moving cutter turntable frame and connected to the moving cutter lower floating support elastic sheet and the moving cutter upper floating trigger elastic sheet respectively to support the up and down floating of the fixed cutter inner moving blade.

[0008] Furthermore, the movable blade in the fixed knife includes an upper portion of the movable blade as a cutting edge, a lower portion of the movable blade as a connecting portion, and a middle portion of the movable blade connecting the upper portion and the lower portion of the movable blade; the upper portion of the movable blade has an additional upper blade support section than the middle portion of the movable blade in the middle direction close to the mesh-type round cover body, and the lower portion of the movable blade is narrower than the middle portion of the movable blade in the width direction, and the lower edges of the middle portion of the movable blade on both sides of the lower portion of the movable blade constitute the lower blade support section; the upper blade support section is supported on the movable blade turntable frame, and the lower edge constitutes the lower blade support section supported on the movable blade lower floating support spring sheet, and the lower portion of the movable blade has an insertion hole, and the movable blade upper floating trigger spring sheet is inserted into the insertion hole.

[0009] Furthermore, it also includes a movable knife turntable frame shrapnel frame located between the movable knife turntable frame and the base; there is a sunken platform in the middle of the base, the lower end of the movable knife turntable frame is installed in the sunken platform, and there are positioning columns on the base around the sunken platform; the movable knife turntable frame shrapnel frame includes a shrapnel frame body and a movable knife turntable frame shrapnel that is upturned and higher than the shrapnel frame body; the shrapnel frame body is sleeved on the positioning column on the base through the through hole thereon; the movable knife turntable frame shrapnel is in surface contact with the movable knife turntable frame for support.

[0010] Furthermore, the movable knife turntable frame includes an annular movable knife supporting ring, a fixed knife inner movable blade mounting body located in the middle, a connecting block connecting the fixed knife inner movable blade mounting body and the annular movable knife supporting ring, and a positioning column on the annular movable knife supporting ring; the annular movable knife is mounted on the annular movable knife supporting ring through its through hole in cooperation with the positioning column; the lower end of the fixed knife inner movable blade mounting body is provided with an axial hole connected to the output shaft of the motor; the fixed knife inner movable blade mounting body presents a raised shape with a high middle and low sides; the fixed knife inner movable blade mounting body is provided with a slot penetrating therethrough on the fixed knife inner movable blade mounting body on the circumferential side of the axial hole for inserting the fixed knife inner movable blade, the width of the slot is greater than the thickness of the fixed knife inner movable blade, and a stopper is provided between the slot wall of the slot and the fixed knife inner movable blade.

[0011] Furthermore, it also includes an annular outer cover; the inner wall of the annular outer cover is provided with an inner groove of the outer cover, and the base is provided with an outer flange block. After the annular outer cover is sleeved on the outside of the annular fixed knife and is screwed, the inner groove of the outer cover and the outer flange block are engaged to fix the annular fixed knife.

[0012] Furthermore, the annular fixed knife includes an annular base, an annular blade, and at least two supporting parts, so that a plurality of circumferential empty areas are formed between the annular base and the annular blade; the outer ring fixed teeth are distributed at intervals along the outer ring circumference of the annular blade, and the inner ring fixed teeth are distributed at intervals along the inner ring circumference of the annular blade, and the diameter of the circle surrounded by the edges on the outermost ends of the annular trimming outer fixed teeth is greater than the inner diameter of the annular base.

[0013] Furthermore, the rotary cutting edges of the inner ring moving teeth are located on one side of the inner ring moving teeth or on both sides of the inner ring moving teeth; the rotary cutting edges of the outer ring moving teeth are located on one side of the outer ring moving teeth or on both sides of the outer ring moving teeth; in addition, the rotary cutting edges formed by the inner ring moving teeth and the outer ring moving teeth that are paired with each other are on the same side or on both sides.

[0014] Adopting the above structural design, compared with the prior art, it has the following advantages:

[0015] In this design, a moving knife turntable frame that can rotate circumferentially under drive and is installed in an annular fixed knife has an annular moving knife with inner ring moving teeth and outer ring moving teeth, which are installed on its outer ring and are adapted in shape and size to the annular fixed knife, and a fixed knife inner moving blade for trimming the hair entering through the round cover type inner net cover fixed knife is installed on its inner ring; and a base, which assembles the above annular fixed knife and the moving knife turntable frame to form a hair trimming structure with the two distributed up and down. With the cooperation of the inner ring moving teeth and the outer ring moving teeth, the fixed knife inner moving blade and the round cover type inner net cover fixed knife achieve surface-to-surface contact trimming, improving the trimming effect of surface-to-surface contact; in addition, the outer teeth of the annular fixed knife contact the skin at a suitable inclination angle, and with the cooperation of the outer ring moving teeth, the whole trimmer contacts the skin at an angle to trim the hair, so that overall, after meeting the surface-to-surface contact trimming and improving the trimming effect, the purpose of trimming the hair at an angle is further achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 is Figure 1 an exploded view of

[0018] Figure 3 is Figure 1 an exploded view from another perspective.

[0019] Figure 4 is a plan view of the present invention.

[0020] Figure 5 is a structural schematic diagram of the connection between the fixed knife inner moving blade and the moving knife elastic piece frame of the present invention.

[0021] Figure 6 is Figure 4 a phase view of A-A.

[0022] Figure 7 is a plan view after the moving knife turntable frame and the fixed knife inner moving blade are assembled

[0023] Figure 8 is Figure 7 a rear view of

[0024] Figure 9 isFigure 7 Stereogram.

[0025] Figure 10 This is the stereogram of the second annular blade of the present invention.

[0026] Figure 11 This is the stereogram of the third annular blade of the present invention.

[0027] Figure 12 This is the schematic plan view of the annular fixed knife of the present invention.

[0028] As shown in the figure: 1. Annular fixed knife; 111. Inner ring fixed teeth; 112. Outer ring fixed teeth; 113. Annular bottom support; 114. Annular blade; 115. Support part; 2. Annular blade; 211. Inner ring moving teeth; 212. Outer ring moving teeth; 3. Round cover type inner mesh cover fixed knife; 311. Mesh hole type round cover body; 312. Fixed knife card slot; 4. Moving knife turntable frame; 411. Annular moving knife support ring; 412. Inner moving blade installation body of fixed knife; 413. Connecting block; 414. Axle hole; 415. Slot; 416. Stopper; 5. Inner moving blade of fixed knife; 511. Upper part of moving knife; 512. Lower part of moving knife; 513. Middle part of moving knife; 514. Upper support section of blade; 515. Lower support section of blade; 516. Insertion hole; 6. Base; 611. Counterbore; 612. Outer flange clamping block; 7. Fixed knife clamping block; 8. Moving knife elastic piece frame; 811. Frame body; 812. Lower floating support elastic piece of moving knife; 813. Upper floating trigger elastic piece of moving knife; 9. Moving knife turntable frame elastic piece frame; 911. Elastic piece frame body; 912. Moving knife turntable frame elastic piece; 10. Annular outer cover; 1011. Inner card slot of outer cover; 1111. First inner clearance area; 1112. Second outer clearance area; 1113. Second inner clearance area; 1114. Second outer clearance area. Specific embodiments

[0029] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] This embodiment discloses a rotary hair trimmer cutter head, as shown in Figures 1 - 12 shown, which includes an annular fixed knife 1, an annular moving knife 2, a round cover type inner mesh cover fixed knife 3, a moving knife turntable frame 4, an inner moving blade 5 of the fixed knife and a base 6.

[0031] First, the annular fixed knife 1 has inner ring fixed teeth 111 and outer ring fixed teeth 112, the annular moving knife 2 has inner ring moving teeth 211 and outer ring moving teeth 212, the shapes and sizes of the inner ring fixed teeth 111 and outer ring fixed teeth 112 of the annular fixed knife 1 are adapted to those of the inner ring moving teeth 211 and outer ring moving teeth 212 of the annular moving knife 2. The round cover type inner net cover fixed knife 3 is installed in the area surrounded by the inner ring fixed teeth 111 of the annular fixed knife 1. The base 6 assembles the annular fixed knife 1 and the moving knife turntable frame 4 to form a hair trimming structure with the two arranged vertically, and the inner moving blade 5 of the fixed knife trims the hair entering from the round cover type inner net cover fixed knife 3.

[0032] The following is a specific annular fixed knife 1, but it is not limited to the following structure. The annular fixed knife 1 includes an annular bottom bracket 113, an annular blade 114 and three two supporting parts 115, and three circumferential empty areas are formed between the annular bottom bracket 113 and the annular blade 114; the outer circumferential edge of the annular blade 114 is provided with the outer ring fixed teeth 112 at intervals, and the inner circumferential edge of the annular blade 114 is provided with the inner ring fixed teeth 111 at intervals.

[0033] To further improve the trimming effect of the annular fixed knife 1 and avoid the situation of missed hair trimming, the annular fixed knife 1 can also be improved as follows. The diameter of the circle formed by the outermost edges on the outermost ends of the trimming outer fixed teeth 211 is greater than the inner diameter of the annular bottom bracket 113. See Figure 12 As shown, the circle Y1 formed by the outermost edges on the outermost ends of the trimming outer fixed teeth 211, the inner circle of the annular bottom bracket 1 is marked with Y2, the outer circle of the annular bottom bracket 1 is marked with Y3, and the diameter of the circle Y1 is less than the diameter of the circle Y3 and greater than the diameter of the circle Y2.

[0034] The round cover type inner net cover fixed knife 3 is installed in the area surrounded by the inner ring fixed teeth 111 of the annular fixed knife 1. The following is a specific assembly method of the two, but it is not limited to the following method: the annular fixed knife 1 has at least two fixed knife blocks 7 facing the center of the annular fixed knife 1 on the inner edge where the inner ring fixed teeth 111 are located; at least two spaced apart corresponding fixed knife slots 312 that can form a tightening type clamping connection with the fixed knife blocks 7 are provided on the outer peripheral edge of the round cover type inner net cover fixed knife 3.

[0035] The moving knife turntable holder 4 is installed in the annular fixed knife 1 and can rotate circumferentially under drive, and the annular moving knife 2 and the inner moving blade 5 of the fixed knife are installed; the following is a specific assembly method of the three, but not limited to the following method: The moving knife turntable holder 4 includes an annular moving knife support ring 411, a fixed knife inner moving blade installation body 412 located in the middle, a connecting block 413 connecting the fixed knife inner moving blade installation body 412 and the annular moving knife support ring 411, and positioning columns on the annular moving knife support ring 411; the annular moving knife 2 is installed on the annular moving knife support ring 411 through the cooperation of its through hole and the positioning columns; the lower end of the fixed knife inner moving blade installation body 412 has a shaft hole 414 connected to the output shaft of the motor; on the fixed knife inner moving blade installation body 412 on the periphery of the shaft hole 414, there is a through slot 415 for inserting the fixed knife inner moving blade 5, so as to achieve the purpose of installing the annular moving knife 2 and the fixed knife inner moving blade 5.

[0036] To improve the effect of trimming hair of the fixed knife inner moving blade 5, the following method is adopted. The round cover type inner net cover fixed knife 3 is a mesh type round cover body 311 with a raised shape that is high in the middle and low on both sides; the fixed knife inner moving blade 5 is inserted in the projection area of the mesh type round cover body 311 on the moving knife turntable holder 4, and the cutting edge of the fixed knife inner moving blade 5 is close to the inner surface of the mesh type round cover body 311 that is high in the middle and low on both sides with one end high and the other end low.

[0037] To achieve the up-and-down floating trimming of the hair by the fixed inner moving blade 5, we adopt the following method and introduce a moving blade elastic sheet holder 8 and a fixed inner moving blade 5 with the following structure. It should be noted that the structure is not limited to the following. The moving blade elastic sheet holder 8 is assembled between the moving blade turntable holder 4 and the base 6. The moving blade elastic sheet holder 8 includes a holder body 811 supported on the base 6, a moving blade lower floating support elastic sheet 812 connected to the holder body 811 and protruding above the holder body 811, and a moving blade upper floating trigger elastic sheet 813 protruding above or flush with the moving blade lower floating support portion 812. The lower part of the fixed inner moving blade 5 is inserted through the moving blade turntable holder 4 and connected to the moving blade lower floating support elastic sheet 812 and the moving blade upper floating trigger elastic sheet 813 respectively to support the up-and-down floating of the fixed inner moving blade 5. The fixed inner moving blade 5 includes a moving blade upper part 511 as the cutting edge, a moving blade lower part 512 as the connecting part, and a moving blade middle part 513 connecting the moving blade upper part 511 and the moving blade lower part 512. The moving blade upper part 511 has a blade upper support section 514 that extends more in the middle direction closer to the mesh-shaped round cover body 311 than the moving blade middle part 513. The moving blade lower part 512 is narrower in the width direction than the moving blade middle part 513, and the lower edges of the moving blade middle part 513 on both sides of the moving blade lower part 512 form a blade lower support section 515. The blade upper support section 514 is supported on the moving blade turntable holder 4. The fixed inner moving blade mounting body 412 has a raised shape with a higher middle and lower sides. More specifically, the blade upper support section 514 is supported on the raised part in the middle of the fixed inner moving blade mounting body 412, and the lower edge forms the blade lower support section 515 that is supported on the moving blade lower floating support elastic sheet 812. The moving blade lower part 512 has a jack 516, and the moving blade upper floating trigger elastic sheet 813 is inserted into the jack 516.

[0038] To facilitate the heat dissipation of the fixed inner moving blade 5, we adopt the following method and further improve the slot 415 of the fixed inner moving blade mounting body 412. The width of the slot 415 is greater than the thickness of the fixed inner moving blade 5, and there is a stop block 416 between the slot wall of the slot 415 and the fixed inner moving blade 5, that is, a heat dissipation gap is left.

[0039] To implement the hair trimming process in the above manner, the following but not limited to the following structure of the annular fixed blade 1 and the annular moving blade 2 is required.

[0040] Here, the structures of the annular fixed blade 1 and the annular moving blade 2 are introduced.

[0041] One structural form of the annular fixed blade 1 is as follows:

[0042] In addition, the annular fixed blade 1 can be further improved as follows. The diameter of the circle formed by the outermost edges of the outer ring trimming teeth 211 is greater than the inner diameter of the annular base 113.

[0043] One structural form of the annular moving blade 2 is as follows:

[0044] See Figure 3 As shown, the annular movable blade 2 has an inner ring movable tooth 211 and an outer ring movable tooth 212. The rotating cutting edges of the inner ring movable tooth 211 are located on both sides of the inner ring movable tooth 211, and the rotating cutting edges of the outer ring movable tooth 212 are located on both sides of the outer ring movable tooth 212. Figure 3 It is marked with Q3.

[0045] One of the structural forms of the annular movable knife 2 is as follows:

[0046] See Figure 10 As shown, the annular movable blade 2 has an inner ring movable tooth 211 and an outer ring movable tooth 212. The rotating cutting edge of the inner ring movable tooth 211 is located on one side of the inner ring movable tooth 211, and the rotating cutting edge of the outer ring movable tooth 212 is located on one side of the outer ring movable tooth 212. The rotating cutting edges of the inner ring movable tooth 211 and the outer ring movable tooth 212 are arranged at the same time. Figure 10 As indicated by Q1 , a sunken first inner avoidance area 1111 is formed on the inner flat contact surface of the inner trimming tooth 211 , and a sunken second outer avoidance area 1112 is formed on the outer flat contact surface of the outer trimming tooth 212 .

[0047] Another structural form of the annular movable knife 2 is as follows:

[0048] See Figure 11 As shown, the annular movable blade 2 has an inner ring movable tooth 211 and an outer ring movable tooth 212. The rotating cutting edges of the inner ring movable tooth 211 are located on both sides of the inner ring movable tooth 211, and the rotating cutting edges of the outer ring movable tooth 212 are located on both sides of the outer ring movable tooth 212. Figure 11 As indicated by Q2 , a sunken second inner clearance zone 1113 is formed on the inner flat contact surface of the inner trimming tooth 211 , and a sunken second outer clearance zone 1114 is formed on the outer flat contact surface of the outer trimming tooth 212 .

[0049] In order to realize the up and down floating of the movable knife turntable frame 4, the annular movable knife 2 on the movable knife turntable frame 4 and the movable blade 5 in the fixed knife are driven to float up and down. We introduce the movable knife turntable frame spring clip frame 9, and install the movable knife turntable frame spring clip frame 9 between the movable knife turntable frame 4 and the base 6. There is a sunken platform 611 in the middle of the base 6, and the lower end of the movable knife turntable frame 4 is installed in the sunken platform 611. There are positioning columns on the base 6 on the outer periphery of the sunken platform 611; the movable knife turntable frame spring clip frame 9 includes a spring clip frame body 911 and a movable knife turntable frame spring clip 912 that is upturned and higher than the spring clip frame body 911; the spring clip frame body 911 is sleeved on the positioning column on the base 6 through the through hole thereon; the movable knife turntable frame spring clip 912 is in surface contact with the movable knife turntable frame 4 for support.

[0050] To achieve the fixation of the base 6 and the annular fixed knife 1, we adopted the following method: an annular outer cover 10 was introduced, and an inner groove 1011 was provided on the inner wall of the annular outer cover 10, and an outer flange block 612 was provided on the base 6. After the annular outer cover 10 was sleeved on the outside of the annular fixed knife 1 and was screwed, the inner groove 1011 of the outer cover was engaged with the outer flange block 612 to fix the annular fixed knife 1.

[0051] The above is only an explanation of the best embodiment of the present invention, which should not be construed as a limitation on the claims. The present invention is not limited to the above embodiments, and all changes made within the scope of protection of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A rotary hair clipper blade head, characterized in that: It includes An annular fixed blade (1) having an inner ring of fixed teeth (111) and an outer ring of fixed teeth (112); A round cover type inner mesh cover fixed knife (3) installed in the area surrounded by the inner ring fixed teeth (111) of the annular fixed knife (1); A movable knife turntable frame (4) is installed in the annular fixed knife (1) and can rotate in the circumferential direction when driven, and an annular movable knife (2) having inner ring movable teeth (211) and outer ring movable teeth (212) matching the shape and size of the annular fixed knife (1) is installed on its outer ring, and a movable blade (5) inside the fixed knife is installed on its inner ring for trimming hair entering through the round cover type inner mesh cover fixed knife (3); and a base (6) on which the annular fixed knife (1) and the movable knife rotating disc frame (4) are assembled to form a hair trimming structure in which the two are arranged up and down; The circular cover type inner mesh cover fixed knife (3) is a mesh circular cover body (311) in the shape of a bulge with a high middle and low sides; the movable blade (5) in the fixed knife is inserted in the projection area of ​​the mesh circular cover body (311) on the movable blade rotating disc frame (4). It also includes a moving knife shrapnel frame (8) located between the moving knife turntable frame (4) and the base (6); The movable knife spring frame (8) comprises a frame body (811) supported on a base (6), a movable knife downward floating support spring (812) connected to the frame body (811) and higher than the frame body (811), and a movable knife upward floating trigger spring (813) higher than or flush with the movable knife downward floating support spring (812); The lower part of the movable blade (5) in the fixed blade is inserted through the movable blade turntable frame (4) and is respectively connected to the movable blade downward floating support spring piece (812) and the movable blade upward floating trigger spring piece (813) to support the upward and downward floating of the movable blade (5) in the fixed blade; It also includes a movable knife turntable frame shrapnel frame (9) located between the movable knife turntable frame (4) and the base (6); A sunken platform (611) is provided in the middle of the base (6), the lower end of the movable knife turntable frame (4) is installed in the sunken platform (611), and a positioning column is provided on the base (6) at the periphery of the sunken platform (611); The movable knife turntable frame shrapnel frame (9) comprises a shrapnel frame body (911) and a movable knife turntable frame shrapnel (912) that is tilted upward and higher than the shrapnel frame body (911); the shrapnel frame body (911) is sleeved on a positioning column on a base (6) through a through hole thereon; and the movable knife turntable frame shrapnel (912) is in surface contact with the movable knife turntable frame (4) to support it.

2. A rotary hair trimmer head according to claim 1, characterized in that: The annular fixed knife (1) has at least two fixed knife clamping blocks (7) facing the center of the annular fixed knife (1) at the inner edge where the inner ring fixed teeth (111) are located; and the outer peripheral edge of the round cover type inner mesh cover fixed knife (3) is provided with at least two fixed knife clamping grooves (312) which are spaced apart and can form a screw-tight clamping connection with the fixed knife clamping blocks (7).

3. A rotary hair trimmer head according to claim 1, characterized in that: The cutting edge of the movable blade (5) in the fixed blade is high at one end and low at the other end, close to the inner surface of the mesh-shaped circular cover body (311) which is high in the middle and low at both sides.

4. A rotary hair trimmer head according to claim 3, characterized in that: The fixed-knife inner moving blade (5) includes a moving-blade upper part (511) serving as a cutting edge, a moving-blade lower part (512) serving as a connecting part, and a moving-blade middle part (513) connecting the moving-blade upper part (511) and the moving-blade lower part (512); the moving-blade upper part (511) has a blade upper support section (514) extending more in the middle direction close to the mesh-type round cover body (311) than the moving-blade middle part (513), and the moving-blade lower part (512) is narrower than the moving-blade middle part (513) in the width direction, and the lower edges of the moving-blade middle part (513) on both sides of the moving-blade lower part (512) form a blade lower support section (515); The blade upper support section (514) is supported on the moving-blade turntable frame (4), and the lower edge forming the blade lower support section (515) is supported on the moving-blade lower floating support spring piece (812). The moving-blade lower part (512) has a jack (516), and the moving-blade upper floating trigger spring piece (813) is inserted into the jack (516).

5. A rotary hair trimmer cutter head according to claim 1, characterized in that: The moving-blade turntable frame (4) includes an annular moving-blade support ring (411), a fixed-knife inner moving-blade mounting body (412) located in the middle, a connecting block (413) connecting the fixed-knife inner moving-blade mounting body (412) and the annular moving-blade support ring (411), and positioning columns on the annular moving-blade support ring (411); The annular moving blade (2) is mounted on the annular moving-blade support ring (411) through its through hole in cooperation with the positioning columns; The lower end of the fixed-knife inner moving-blade mounting body (412) has a shaft hole (414) connected to the output shaft of the motor; The fixed-knife inner moving-blade mounting body (412) presents a raised shape with a higher middle and lower sides; There is a through slot (415) for inserting the fixed-knife inner moving blade (5) on the fixed-knife inner moving-blade mounting body (412) on the periphery of the shaft hole (414). The width of the slot (415) is greater than the thickness of the fixed-knife inner moving blade (5), and there is a stop block (416) between the slot wall of the slot (415) and the fixed-knife inner moving blade (5).

6. A rotary hair trimmer cutter head according to claim 1, characterized in that: It further includes an annular outer cover (10); there is an inner card slot (1011) on the inner wall of the annular outer cover (10), and the base (6) is provided with an outward flange card block (612). The annular outer cover (10) is sleeved outside the annular fixed knife (1), and after being screwed, the inner card slot (1011) and the outward flange card block (612) are engaged to fix the annular fixed knife (1).

7. A rotary hair trimmer cutter head according to claim 1, characterized in that: The annular fixed knife (1) includes an annular bottom bracket (113), an annular blade (114), and at least two supporting parts (115) are arranged between the annular base (113) and the annular blade (114) to form a plurality of circumferential empty spaces between the annular base (113) and the annular blade (114); the outer circumferential edge of the annular blade (114) is provided with the outer fixed teeth (112) at intervals, and the inner circumferential edge of the annular blade (114) is provided with the inner fixed teeth (111) at intervals, and the diameter of the circle formed by the outermost ends of the outer fixed teeth (112) is greater than the inner diameter of the annular base (113).

8. The rotary hair trimmer cutter head according to claim 1, wherein: The rotary cutting edge of the inner movable teeth (211) is located on one side or both sides of the inner movable teeth (211); the rotary cutting edge of the outer movable teeth (212) is located on one side or both sides of the outer movable teeth (212); in addition, the rotary cutting edges formed by the inner movable teeth (211) and the outer movable teeth (212) in inner and outer pairs are on the same side or on both sides.

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