Electric care tool with a rotary cutter head assembly

Abstract

The present invention discloses an electric care tool with a rotary cutter head assembly, which includes: a body, a support member provided on the body, and a cutter head assembly supported by the support member, wherein the cutter head assembly includes a cutter head, a cutter net that at least partially shields the cutter head, and a power unit that drives the cutter head to rotate. The present invention manually or automatically adjusts the position of the cutter head assembly in at least two directions to perfectly match the facial contour of the consumer, shaves more thoroughly, and improves the user experience.

Description

[0001] Cross - reference to related applications

[0002] This application is based on and claims priority to a Chinese patent application with the application number 2020108920680 and the filing date of August 28, 2020. The entire content of the above - mentioned Chinese patent application is incorporated herein by reference. Technical field

[0003] The present invention relates to an electric care tool. Background art

[0004] Electric care tools, such as razors, hair removers, etc., as small household appliances widely used in daily life, bring great convenience to people's lives. However, the floating and swinging angles of the cutter head on existing electric razors are relatively small. At the same time, since the motor generates noise and vibration during shaving, it cannot provide consumers with a shaving experience that can perfectly match their facial contours, and it is difficult to achieve the unity of compact portability and strong performance. Summary of the invention

[0005] The object of the present invention is to provide an electric care tool with a rotary cutter head assembly, which manually or automatically adjusts the position of the cutter head assembly in at least two directions to perfectly match the facial contours of consumers, shaves more thoroughly, and improves the user experience.

[0006] To achieve the object of the present invention, the present invention adopts the first technical solution: an electric care tool with a rotary cutter head assembly, which includes: a body, a support member provided on the body, and a cutter head assembly supported by the support member, wherein the cutter head assembly includes a cutter head, a cutter net at least partially shielding the cutter head, and a power unit for driving the cutter head to rotate. The support member is connected to the body through a rotating shaft, and the support member rotates around the rotating shaft in a second direction.

[0007] Preferably, the cutter head assembly deflects relative to the support member in a first direction.

[0008] Preferably, the power unit is located outside the body and the center line thereof intersects the extending direction of the body at an angle greater than 45 degrees.

[0009] Preferably, the cutter head assembly further includes a cutter net fixing ring for fixing one side of the cutter net, a cutter net support frame cooperating with the other side of the cutter net for fixing, and a gear set for transmission and provided between the cutter head and the power unit.

[0010] Preferably, the support member is provided at the top of the body and includes a support arm and a support ring integrally connected to the bottom of the support arm, wherein the support ring can rotate relative to the body around the rotating shaft.

[0011] Preferably, the support arm is provided with a support arm inner cavity, a support arm limiting protrusion arranged in the support arm inner cavity, a stopping portion arranged in the support arm inner cavity and rotating in a first direction, and a stopping portion connecting member for fixedly connecting the stopping portion with the cutter head assembly; the upper end of the support ring has a central cavity, an annular portion located at the bottom of the central cavity, and a fuselage connecting member for limiting the annular portion and connecting with the fuselage and allowing relative rotational movement of the annular portion; the lower end of the support ring is provided with a limiting cavity, a support base for isolating the free cavity from the limiting cavity, a limiting protrusion arranged on the support base and protruding downward, a limiting projection adjacent to the limiting protrusion, and a limiting central hole located at the center of the limiting protrusion.

[0012] Preferably, the fuselage includes a first arc segment, a second arc segment, an elastic member cavity surrounded by the first and second arc segments, a central portion located in the elastic member cavity, an elastic member arranged in the elastic member cavity and arc-shaped around the central portion, a pair of stopping blocks arranged at both ends of the elastic member, and a stopping groove located between the two stopping blocks, wherein there is a height difference between the bottom end surface of the limiting protrusion and the bottom end surface of the limiting projection, and the limiting protrusion rotates and moves in the stopping groove, while the limiting projection moves along the track of the second arc segment and is restricted by the two ends of the first arc segment.

[0013] To achieve the object of the present invention, the present invention adopts a second technical solution: an electric care tool with a rotary cutter head assembly, which includes: a fuselage, and a cutter head assembly connected to the fuselage and rotatable relative to the fuselage, wherein the cutter head assembly includes a cutter head, a cutter net at least partially shielding the cutter head, a power unit for driving the cutter head to rotate, and an arc-shaped protrusion or arc-shaped cavity adjacent to the power unit, and the fuselage is provided with an arc-shaped cavity or arc-shaped protrusion cooperating with the arc-shaped protrusion or arc-shaped cavity, and the arc-shaped protrusion or arc-shaped cavity of the cutter head assembly rotates relative to the arc-shaped cavity or arc-shaped protrusion of the fuselage in at least two directions.

[0014] To achieve the object of the present invention, the present invention adopts a third technical solution: an electric care tool with a rotary cutter head assembly, which includes: a fuselage, a support member arranged on the fuselage and rotatable relative to the fuselage, and a cutter head assembly supported by the support member and detachably connected, wherein the cutter head assembly includes a plurality of cutter heads, a plurality of cutter nets at least partially shielding the cutter heads, a power unit for driving the cutter heads to rotate, a cutter net fixing ring for fixing one side of the cutter net, a cutter net support frame cooperating with the other side of the cutter net for fixing, and a speed reduction transmission mechanism for transmission and arranged between the cutter head and the power unit, and the cutter head assembly is a water sealing assembly.

[0015] Preferably, the rotary cutter head assembly is electrically connected to the fuselage through a wire, and the wire passes through its rotating axis, so that the battery and the motor are electrically connected.

[0016] To achieve the object of the present invention, the present invention adopts the fourth technical solution: an electric care tool with a rotary cutter head assembly, which comprises: a body, and a cutter head assembly connected to the body and rotatable relative thereto, wherein the cutter head assembly includes a cutter head, a cutter net at least partially shielding the cutter head, a power unit for driving the cutter head to rotate, and a support flange or a receiving groove adjacent to the power unit, and the body is provided with a receiving groove or a support flange that cooperates with and connects to the support flange or the receiving groove, and the support flange or the receiving groove of the cutter head assembly rotates relative to the receiving groove or the support flange of the body in at least two directions and is magnetically connected.

[0017] The advantages of the present invention are: manually or automatically adjusting the position of the cutter head assembly in at least two directions to perfectly match the facial contour of the consumer, shaving more thoroughly, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments:

[0019] Figure 1 is the front view of an embodiment of the present invention;

[0020] Figure 2 is the rear view of an embodiment of the present invention;

[0021] Figure 3 is the perspective view of an embodiment of the present invention;

[0022] Figure 4 is the front view of the body and the support member in an embodiment of the present invention;

[0023] Figure 5 is the bottom view of the support member in an embodiment of the present invention;

[0024] Figure 6 is the schematic diagram of the cutter head assembly in an embodiment of the present invention, with the internal part shown schematically;

[0025] Figure 7 is the schematic diagram of the rotation of the cutter head assembly relative to the support member in an embodiment of the present invention;

[0026] Figure 8 is the schematic diagram of the rotation of the cutter head assembly relative to the body in an embodiment of the present invention;

[0027] Figure 9 is the schematic diagram of another embodiment of the support member in an embodiment of the present invention;

[0028] Figure 10 is Figure 9 the exploded schematic diagram of the fixing ring and the gear ring in

[0029] Figure 11 is the perspective view of another embodiment of the present invention;

[0030] Figure 12 It is a schematic diagram of the separation of the fuselage and the cutter head assembly in another embodiment of the present invention;

[0031] Figure 13 Similar to Figure 11 wherein the internal structure of the support member is partially revealed;

[0032] Figure 14 Similar to Figure 13 wherein the support member is removed;

[0033] Figure 15 It is a perspective view of the support member after being flipped in another embodiment of the present invention;

[0034] Figure 16 It is a cross-sectional view of another embodiment of the present invention, wherein the cutter head assembly is removed;

[0035] Figure 17 It is a perspective view of another embodiment of the present invention, wherein the cutter head assembly is removed and the support member is in an initial state;

[0036] Figure 18 Similar to Figure 17 which is a perspective view of the support member after being rotated by an angle;

[0037] Figure 19 It is a side view of another embodiment of the present invention, wherein the internal structure of the support arm is partially shown and the cutter head assembly is in an initial state;

[0038] Figure 20 Similar to Figure 19 wherein the cutter head assembly is in a state after being rotated by an angle;

[0039] Figure 21 Similar to Figure 20 wherein the cutter head assembly is in a locked state;

[0040] Figure 22 It is a schematic diagram of the stop portion in another embodiment of the present invention;

[0041] Figure 23 Similar to Figure 21 wherein the cutter head assembly is partially revealed. Detailed implementation manners

[0042] Embodiment: As Figures 1 - 10As shown, the present invention provides a first embodiment of an electric care tool with a rotary cutter head assembly. The electric care tool is preferably a razor, hair clipper, sideburn trimmer, beard trimmer, trimmer, hair remover, etc. It includes: a body 100, a support 200 provided on the body 100, and a cutter head assembly 300 supported by the support 200. The cutter head assembly 300 includes a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, and a power unit 350 that drives the cutter head 330 to rotate. The power unit 350 is preferably a DC brushed or brushless motor. The cutter head assembly 300 is a separate assembly independent of the body 100 and is detachable and can be washed separately.

[0043] The body 100 extends in a columnar shape substantially perpendicular to the horizontal plane. It has a body cavity 110 for housing a battery inside, and a display screen 120 is provided on the outside. The display screen 120 can display parameters such as the working state, battery capacity, battery working time, and the number of times the cutter head is used, and can also be turned on or off by means of a touch screen.

[0044] The support 200 is provided at the top of the body 100 and is generally in an L shape, including a support arm 210 and a support ring 220 integrally connected to the bottom of the support arm 210. The support ring 220 can rotate relative to the body 100 around a rotation axis 222. A locking hole 230 is provided on the outside of the support arm 210, and a locking button 240 that can move in the locking hole 230. An axial hole 212 is provided at a position adjacent to the locking hole 230 on the inner side of the support arm 210. The accommodation space 260 formed between the support arm 210 and the support ring 220 is used to accommodate the cutter head assembly 300 and allows the cutter head assembly 300 to rotate. To ensure that the support 200 rotates relative to the body 100 and is positioned at each angle, the support 200 further includes a fixed ring 250 provided inside the support ring 220, and a plurality of tooth-shaped parts 224 are provided on the inner wall of the support ring 220; the fixed ring 250 includes a fixed ring hole 252 allowing the rotation axis 222 to pass through, an elastic part seat 254 adjacent to the fixed ring hole 252 on one side, and a pop-up hole 256 located on the other side of the elastic part seat 254. The elastic part seat 254 is used to accommodate an elastic part and a protrusion supported by the elastic part and cooperating with the tooth-shaped part 224 for fixation. The support ring 220 can rotate relative to the fixed ring 250, while the fixed ring 250 is relatively stationary.

[0045] The cutter head assembly 300 includes a housing 310 and a connecting cover 320 that at least partially covers the housing 310. A power cavity 302 for accommodating a power unit 350 is provided inside the housing 310. The cutter head assembly 300 is interconnected with the support member 200 through a connecting shaft 322, and the cutter head assembly 300 rotates around the connecting shaft 322 in a first direction. One end of the connecting shaft 322 is disposed on the connecting cover 320, and the other end is detachably connected to the shaft hole 212, or can be connected by a magnetic attraction method, which is more convenient for the disassembly and cleaning of the cutter head assembly 300. The locking button 240 and the other end of the connecting shaft 322 are in a cam locking fit to lock the rotation of the connecting shaft 322 and prevent the rotation of the cutter head assembly 300.

[0046] Preferably, the cutter head assembly 300 deflects relative to the support member 200 in a first direction, where the first direction is the direction perpendicular to the horizontal plane, that is, parallel to the extending direction of the fuselage 100.

[0047] Preferably, the power unit 350 is located outside the fuselage 100 and the center line thereof intersects the extending direction of the fuselage 100 at an angle greater than 45 degrees.

[0048] Preferably, the support member 200 rotates relative to the fuselage 100 in a second direction, where the second direction is the direction parallel to the horizontal plane, that is, perpendicular to the extending direction of the fuselage 100.

[0049] Preferably, the cutter head assembly 300 further includes a cutter head net fixing ring 340 for fixing one side of the cutter head net 330, a cutter head net support frame for cooperating and fixing with the other side of the cutter head net 330, and a gear set 360 for transmission and disposed between the cutter head 329 and the power unit 350. The gear set 360 can be a planetary gear set or a worm and worm gear and other speed reduction transmission mechanisms. The cutter head net support frame and the gear set 360 are accommodated in the power cavity 302.

[0050] In this embodiment, the cutter head 329 adopts a modular replaceable design, and in addition to the traditional three-head shaver cutter head, it can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, body hair trimmer cutter head, engraving trimmer cutter head, so as to meet different usage needs of consumers.

[0051] Similarly, the present invention provides a second embodiment of a care tool with a rotary cutter head assembly, which includes: a fuselage, and a cutter head assembly connected to the fuselage and rotatable relative thereto, where the cutter head assembly includes a cutter head, a cutter head net that at least partially shields the cutter head, and a power unit for driving the cutter head to rotate.

[0052] Preferably, the cutter head assembly is deflected relative to the fuselage in a first direction, where the first direction is perpendicular to the horizontal plane, that is, parallel to the extension direction of the fuselage.

[0053] Preferably, the power unit is located outside the fuselage and its center line intersects the extension direction of the fuselage at an angle greater than 45 degrees, and the angle is preferably an obtuse angle during operation.

[0054] Preferably, the cutter head assembly rotates relative to the fuselage in a second direction, where the second direction is parallel to the horizontal plane, that is, perpendicular to the extension direction of the fuselage.

[0055] Preferably, the cutter head assembly further includes a cutter head net fixing ring for fixing one side of the cutter head net, a cutter head net support frame for cooperating and fixing with the other side of the cutter head net, and a gear set for transmission and arranged between the cutter head and the power unit. The gear set can be a planetary gear set or a speed reduction transmission mechanism such as a worm and worm gear.

[0056] In this embodiment, the cutter head adopts a modular replaceable design, and it can also be a brush head, a massage head, a care head, etc. In addition to the traditional three-head shaver cutter head, the cutter head can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, hair removal trimmer cutter head, engraving trimmer cutter head, so as to meet different usage requirements of consumers.

[0057] As Figure 6 shown and combined with Figure 1 , the present invention provides a third embodiment of a rotary cutter head assembly, which rotates relative to the fuselage 100 of the shaver, and includes: a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, a power unit 350 that drives the cutter head 330 to rotate, a cutter head net fixing ring 340 that fixes one side of the cutter head net 330, a cutter head net support frame that cooperates and fixes with the other side of the cutter head net 330, and a gear set 360 for transmission and arranged between the cutter head 329 and the power unit 350. The gear set 360 can be a planetary gear set or a speed reduction transmission mechanism such as a worm and worm gear. The power unit 350 is preferably a DC brushed or brushless motor.

[0058] In this embodiment, the cutter head adopts a modular replaceable design, and the cutter head can be a cutter head, a brush head, a massage head, a nursing head, etc. Among them, in addition to the traditional three-head shaver cutter head, the cutter head can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, hair removal trimmer cutter head, engraving trimmer cutter head, so as to meet the different usage needs of consumers.

[0059] Similar to the third embodiment, the present invention provides a fourth embodiment of a rotary cutter head assembly, which rotates relative to the body 100 of the shaver, and includes: a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, and a power unit 350 that drives the cutter head 330 to rotate, wherein the cutter head 329 or the cutter head net 330 is detachably arranged above the body 100 of the shaver. The power unit 350 is preferably a DC brushed or brushless motor. This embodiment further includes a cutter head net fixing ring 340 that fixes one side of the cutter head net 330, a cutter head net support frame that cooperates with and fixes the other side of the cutter head net 330, and a gear set 360 that is used for transmission and is arranged between the cutter head 329 and the power unit 350.

[0060] In this embodiment, the cutter head adopts a modular replaceable design, and the cutter head can be a cutter head, a brush head, a massage head, a nursing head, etc. Among them, in addition to the traditional three-head shaver cutter head, the cutter head can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, hair removal trimmer cutter head, engraving trimmer cutter head, so as to meet the different usage needs of consumers.

[0061] Similarly, the present invention provides a fifth embodiment of a nursing tool with a rotary cutter head assembly, which includes: a body 100, a support 200 arranged on the body 100, and a cutter head assembly 300 supported by the support 200, wherein the cutter head assembly 300 includes a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, and a power unit 350 that drives the cutter head 330 to rotate. The power unit 350 is preferably a DC brushed or brushless motor. The cutter head assembly 300 is interconnected with the support 200 through a connecting shaft 322, and the cutter head assembly 300 rotates around the connecting shaft 322 in a first direction.

[0062] The body 100 extends in a columnar shape in a direction substantially perpendicular to the horizontal plane. Inside it, there is a body cavity 110 for housing the battery, and on the outside, there is a display screen 120. The display screen 120 can display parameters such as the working state, battery capacity, battery working time, number of times the cutter head is used, etc., and can also be turned on or off by means of a touch screen.

[0063] The support member 200 is provided at the top of the body 100 and is substantially L-shaped, including a support arm 210 and a support ring 220 located at the bottom of the support arm 210 and integrally connected and sleeved on the top of the body 100. The support ring 220 can rotate relative to the body 100 around the rotation axis 222. On the outside of the support arm 210, there is a locking hole 230 and a locking button 240 that can move within the locking hole 230. An axial hole 212 is provided at a position adjacent to the locking hole 230 on the inner side of the support arm 210. The accommodating space 260 formed between the support arm 210 and the support ring 220 is used to accommodate the cutter head assembly 300 and allows the cutter head assembly 300 to rotate. To ensure that the support member 200 rotates relative to the body 100 and is positioned at each angle, the support member 200 further includes a fixed ring 250 provided inside the support ring 220, and a plurality of tooth-shaped parts 224 are provided on the inner wall of the support ring 220; the fixed ring 250 includes a fixed ring hole 252 allowing the rotation axis 222 to pass through, an elastic member seat 254 adjacent to the fixed ring hole 252 on one side, and a pop-up hole 256 located on the other side of the elastic member seat 254. The elastic member seat 254 is used to accommodate the elastic member and a protrusion supported by the elastic member and cooperating with the tooth-shaped part 224 for fixation. The support ring 220 can rotate relative to the fixed ring 250, while the fixed ring 250 is relatively stationary.

[0064] The cutter head assembly 300 includes a housing 310 and a connection cover 320 at least partially covering the housing 310. Inside the housing 310, there is a power cavity 302 for housing the power unit 350. The cutter head assembly 300 is interconnected with the support member 200 through a connection shaft 322, and the cutter head assembly 300 rotates around the connection shaft 322 in the first direction. One end of the connection shaft 322 is provided on the connection cover 320, and the other end is detachably connected to the axial hole 212, and can also be connected by magnetic attraction, which is more convenient for the disassembly and cleaning of the cutter head assembly 300. The locking button 240 is in cam cooperation with the other end of the connection shaft 322 to lock the rotation of the connection shaft 322 and prevent the rotation of the cutter head assembly 300.

[0065] Preferably, the cutter head assembly 300 deflects relative to the support member 200 in the first direction, where the first direction is the direction perpendicular to the horizontal plane, that is, parallel to the extension direction of the body 100.

[0066] Preferably, the power unit 350 is located outside the body 100 and the center line thereof intersects the extension direction of the body 100 at an angle greater than 45 degrees.

[0067] Preferably, the support member 200 rotates relative to the fuselage 100 in a second direction, where the second direction is a direction parallel to the horizontal plane, i.e., perpendicular to the extension direction of the fuselage 100.

[0068] Preferably, the cutter head assembly 300 further includes a cutter head net fixing ring 340 for fixing one side of the cutter head net 330, a cutter head net support frame for cooperating and fixing with the other side of the cutter head net 330, and a gear set 360 for transmission and disposed between the cutter head 329 and the power unit 350. The gear set 360 can be a planetary gear set or a speed reduction transmission mechanism such as a worm and worm gear.

[0069] In this embodiment, the cutter head 329 adopts a modular replaceable design. In addition to the traditional three-head shaver cutter head, it can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, body hair trimmer cutter head, engraving trimmer cutter head, so as to meet different usage needs of consumers.

[0070] Similarly, the present invention provides a sixth embodiment of a care tool with a rotary cutter head assembly, which includes: a fuselage 100, a support member 200 disposed on the fuselage 100, and a cutter head assembly 300 supported by the support member 200. The cutter head assembly 300 includes a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, and a power unit 350 that drives the cutter head 330 to rotate. The power unit 350 is preferably a DC brushed or brushless motor. The cutter head assembly 300 is interconnected with the support member 200 through a connecting shaft 322, and the cutter head assembly 300 rotates around the connecting shaft 322 in a first direction. The support member 200 is connected to the fuselage 100 through a rotating shaft 222, and the support member 200 rotates around the rotating shaft 222 in a second direction.

[0071] The fuselage 100 extends in a columnar shape in a direction substantially perpendicular to the horizontal plane. It has a fuselage cavity 110 for accommodating a battery inside, and a display screen 120 is provided on the outside. The display screen 120 can display parameters such as the working state, battery capacity, battery working time, and cutter head usage times, and can also be turned on or off by means of a touch screen.

[0072] The support member 200 is provided at the top of the fuselage 100 and is generally in an L shape, including a support arm 210 and a support ring 220 located at the bottom of the support arm 210 and integrally connected and sleeved on the top of the fuselage 100. The support ring 220 can rotate relative to the fuselage 100 around the rotation axis 222. A locking hole 230 is provided on the outer side of the support arm 210, and a locking button 240 that can move within the locking hole 230. An axis hole 212 is provided at a position adjacent to the locking hole 230 on the inner side of the support arm 210. A receiving space 260 formed between the support arm 210 and the support ring 220 is used to receive the cutter head assembly 300 and allows the cutter head assembly 300 to rotate. To ensure that the support member 200 rotates relative to the fuselage 100 and is positioned at each angle, the support member 200 further includes a fixed ring 250 provided within the support ring 220, and a plurality of tooth-shaped portions 224 are provided on the inner wall of the support ring 220; the fixed ring 250 includes a fixed ring hole 252 allowing the rotation axis 222 to pass through, an elastic member seat 254 adjacent to the fixed ring hole 252 on one side, and a pop-up hole 256 located on the other side of the elastic member seat 254. The elastic member seat 254 is used to receive the elastic member and a protrusion supported by the elastic member and cooperating with the tooth-shaped portion 224 for fixation. The support ring 220 can rotate relative to the fixed ring 250, while the fixed ring 250 is relatively stationary.

[0073] The cutter head assembly 300 includes a housing 310 and a connection cover 320 that at least partially covers the housing 310. A power cavity 302 for receiving the power unit 350 is provided within the housing 310. The cutter head assembly 300 is interconnected with the support member 200 through a connection shaft 322, and the cutter head assembly 300 rotates around the connection shaft 322 in a first direction. One end of the connection shaft 322 is provided on the connection cover 320, and the other end is detachably connected to the axis hole 212, and can also be connected by magnetic attraction, which is more convenient for the disassembly and cleaning of the cutter head assembly 300. The locking button 240 and the other end of the connection shaft 322 are locked and cooperated through a cam to lock the rotation of the connection shaft 322 and prevent the rotation of the cutter head assembly 300.

[0074] Preferably, the cutter head assembly 300 deflects relative to the support member 200 in a first direction, where the first direction is the direction perpendicular to the horizontal plane, that is, parallel to the extending direction of the fuselage 100.

[0075] Preferably, the power unit 350 is located outside the fuselage 100 and the center line thereof intersects the extending direction of the fuselage 100 at an angle greater than 45 degrees.

[0076] Preferably, the support member 200 rotates relative to the fuselage 100 in a second direction, where the second direction is the direction parallel to the horizontal plane, that is, perpendicular to the extending direction of the fuselage 100.

[0077] Preferably, the cutter head assembly 300 further includes a cutter head net fixing ring 340 for fixing one side of the cutter head net 330, a cutter head net support frame for cooperatively fixing the other side of the cutter head net 330, and a gear set 360 for transmission and disposed between the cutter head 329 and the power unit 350. The gear set 360 can be a planetary gear set or a worm and worm gear, etc., which are reduction drive mechanisms.

[0078] In this embodiment, the cutter head 329 adopts a modular replaceable design. In addition to the traditional three-head shaver cutter head, it can also be compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, hair removal trimmer cutter head, engraving trimmer cutter head, so as to meet the different usage needs of consumers.

[0079] Similarly, the present invention provides a seventh embodiment of a care tool with a rotary cutter head assembly, which includes: a body, and a cutter head assembly connected to the body and rotatable relative to the body, wherein the cutter head assembly includes a cutter head, a cutter head net at least partially shielding the cutter head, a power unit for driving the cutter head to rotate, and an arc-shaped protrusion or arc-shaped cavity adjacent to the power unit, and the body is provided with an arc-shaped cavity or arc-shaped protrusion for cooperatively connecting with the arc-shaped protrusion or arc-shaped cavity, and the arc-shaped protrusion or arc-shaped cavity of the cutter head assembly rotates relative to the arc-shaped cavity or arc-shaped protrusion of the body in at least two directions. The first direction is the direction perpendicular to the horizontal plane, that is, parallel to the extending direction of the body, and the second direction is the direction parallel to the horizontal plane, that is, perpendicular to the extending direction of the body. The arc-shaped protrusion is preferably a sphere, and the arc-shaped cavity is a spherical cavity, thereby realizing a large range of up, down, left, and right position adjustments, and the angle range is greater than 180 degrees. The power transmission between the body and the cutter head assembly can be wireless or wired. The wireless method is coil electromagnetic induction. A charger is provided in the body, and energy is transmitted by a magnetic field between the charger and the power unit, and there is no wire connection between the two. The wired method can be realized by passing a wire through the rotation center of the arc-shaped protrusion or arc-shaped cavity to achieve energy transmission.

[0080] Preferably, the cutter head assembly further includes a cutter head net fixing ring for fixing one side of the cutter head net, a cutter head net support frame for cooperatively fixing the other side of the cutter head net, and a gear set for transmission and disposed between the cutter head and the power unit. The gear set can be a planetary gear set or a worm and worm gear, etc., which are reduction drive mechanisms.

[0081] In this embodiment, the cutter head adopts a modular replaceable design. In addition to the traditional three-head shaver cutter head, it is also compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, body hair trimmer cutter head, and engraving trimmer cutter head, so as to meet different usage needs of consumers.

[0082] Similarly, the present invention provides an eighth embodiment of a care tool with a rotary cutter head assembly, which includes: a body 100, a support member 200 disposed on the body 100, and a cutter head assembly 300 supported by the support member 200. The cutter head assembly 300 includes a cutter head 329, a cutter head net 330 that at least partially shields the cutter head 329, and a power unit 350 that drives the cutter head 330 to rotate. The power unit 350 is preferably a DC brushed or brushless motor. The cutter head assembly 300 is interconnected with the support member 200 through a connecting shaft 322, and the cutter head assembly 300 rotates around the connecting shaft 322 in a first direction. The support member 200 is connected to the body 100 through a rotating shaft 222, and the support member 200 rotates around the rotating shaft 222 in a second direction. At the same time, a power cord can pass through the inside of the connecting shaft 322 to ensure electrical connection between the power supply inside the body and the power unit.

[0083] The body 100 extends in a columnar shape substantially perpendicular to the horizontal plane. It has a body cavity 110 for accommodating a battery inside, and a display screen 120 is provided on the outside. The display screen 120 can display parameters such as the working state, battery capacity, battery working time, and cutter head usage times, and can also be turned on or off by means of a touch screen.

[0084] The support member 200 is disposed at the top of the fuselage 100 and is generally L-shaped, including a support arm 210 and a support ring 220 integrally connected to the bottom of the support arm 210. The support ring 220 can rotate relative to the fuselage 100 about a rotation axis 222. A locking hole 230 is provided on the outer side of the support arm 210, and a locking button 240 that can move within the locking hole 230. An axial hole 212 is provided at a position adjacent to the locking hole 230 on the inner side of the support arm 210. A receiving space 260 formed between the support arm 210 and the support ring 220 is used to receive the cutter head assembly 300 and allow the cutter head assembly 300 to rotate. To ensure that the support member 200 rotates relative to the fuselage 100 and is positioned at each angle, the support member 200 further includes a fixing ring 250 disposed within the support ring 220, and a plurality of tooth-shaped portions 224 are provided on the inner wall of the support ring 220; the fixing ring 250 includes a fixing ring hole 252 allowing the rotation axis 222 to pass through, an elastic member seat 254 adjacent to the fixing ring hole 252 on one side, and a pop-up hole 256 located on the other side of the elastic member seat 254. The elastic member seat 254 is used to receive an elastic member and a protrusion supported by the elastic member and cooperating with the tooth-shaped portion 224 for fixation. The support ring 220 can rotate relative to the fixing ring 250, while the fixing ring 250 is relatively stationary.

[0085] The cutter head assembly 300 includes a housing 310 and a connection cover 320 at least partially covering the housing 310. A power cavity 302 for receiving a power unit 350 is provided within the housing 310. The cutter head assembly 300 is interconnected with the support member 200 through a connection shaft 322, and the cutter head assembly 300 rotates about the connection shaft 322 in a first direction. One end of the connection shaft 322 is disposed on the connection cover 320, and the other end is detachably connected to the axial hole 212, or can be connected by a magnetic attraction method, which is more convenient for the disassembly and cleaning of the cutter head assembly 300. The locking button 240 is in cam cooperation with the other end of the connection shaft 322 for locking the rotation of the connection shaft 322 and preventing the rotation of the cutter head assembly 300.

[0086] Preferably, the cutter head assembly 300 deflects relative to the support member 200 in a first direction, where the first direction is the direction perpendicular to the horizontal plane, i.e., parallel to the extending direction of the fuselage 100.

[0087] Preferably, the power unit 350 is located outside the fuselage 100 and the center line thereof intersects the extending direction of the fuselage 100 at an angle greater than 45 degrees.

[0088] Preferably, the support member 200 rotates relative to the fuselage 100 in a second direction, where the second direction is the direction parallel to the horizontal plane, i.e., perpendicular to the extending direction of the fuselage 100.

[0089] Preferably, the cutter head assembly 300 further includes a cutter head net fixing ring 340 for fixing one side of the cutter head net 330, a cutter head net support frame for cooperatively fixing the other side of the cutter head net 330, and a gear set 360 for transmission and disposed between the cutter head 329 and the power unit 350. The gear set 360 can be a planetary gear set or a worm and worm gear, etc., which are speed reduction transmission mechanisms.

[0090] In this embodiment, the cutter head 329 adopts a modular replaceable design. In addition to the traditional three-head shaver cutter head, it is also compatible with: single-head shaver cutter head, double-head shaver cutter head, four-head shaver cutter head, five-head shaver cutter head, reciprocating shaver cutter head, hair cutting scissors head with a fixed-length comb, beard trimmer cutter head, sideburn trimmer cutter head, mustache trimmer cutter head, U-shaped trimmer cutter head, T-shaped trimmer cutter head, nose hair trimmer cutter head, hair removal trimmer cutter head, engraving trimmer cutter head, so as to meet different usage needs of consumers.

[0091] Similarly, the present invention provides a ninth embodiment of a care tool with a rotary cutter head assembly, which includes: a body, a support member disposed on the body, and a cutter head assembly supported by the support member and suspended outside the body. The cutter head assembly includes a plurality of cutter heads, a plurality of cutter head nets at least partially shielding the cutter heads, a power unit for driving the cutter heads to rotate, a cutter head net fixing ring for fixing one side of the cutter head net, a cutter head net support frame for cooperatively fixing the other side of the cutter head net, and a speed reduction transmission mechanism for transmission and disposed between the cutter head and the power unit. The cutter head assembly rotates relative to the support member in a first direction, while the support member rotates relative to the body in a second direction.

[0092] Similarly, the present invention provides a tenth embodiment of a care tool with a rotary cutter head assembly, which includes: a body, a support member disposed on the body, and a cutter head assembly supported by the support member and detachably connected. The cutter head assembly includes a plurality of cutter heads, a plurality of cutter head nets at least partially shielding the cutter heads, a power unit for driving the cutter heads to rotate, a cutter head net fixing ring for fixing one side of the cutter head net, a cutter head net support frame for cooperatively fixing the other side of the cutter head net, and a speed reduction transmission mechanism for transmission and disposed between the cutter head and the power unit. The cutter head assembly rotates relative to the support member in a first direction, while the support member rotates relative to the body in a second direction. The detachable connection of the cutter head assembly facilitates the maintenance and cleaning of the cutter head assembly.

[0093] Similarly, the present invention provides an eleventh embodiment of a care tool with a rotary cutter head assembly, which includes: a body, a support member provided on the body, and a cutter head assembly supported by the support member and detachably connected thereto, wherein the cutter head assembly includes a plurality of cutter heads, a plurality of cutter head nets at least partially shielding the cutter heads, a power unit for driving the cutter heads to rotate, a cutter head net fixing ring for fixing one side of the cutter head net, a cutter head net support frame cooperating with and fixing the other side of the cutter head net, and a speed reduction transmission mechanism for transmission and provided between the cutter heads and the power unit. The cutter head assembly is a water-sealed assembly for water washing.

[0094] Similarly, the present invention provides a twelfth embodiment of a care tool with a rotary cutter head assembly, which includes: a body, and a cutter head assembly connected to the body and relatively rotatable, wherein the cutter head assembly includes a cutter head, a cutter head net at least partially shielding the cutter head, a power unit for driving the cutter head to rotate, and a support flange or a receiving groove adjacent to the power unit, and the body is provided with a receiving groove or a support flange cooperating with the support flange or the receiving groove, and the support flange or the receiving groove of the cutter head assembly rotates relative to the receiving groove or the support flange of the body in at least two directions and is magnetically connected.

[0095] As Figures 9 - 10 shown, the present invention can also adopt another form of support member, which is provided at the top of the body 100 and is generally L-shaped, including a support arm 2100, a gear ring 2200 integrally connected to the bottom of the support arm 2100, and a fixing ring 2220 sleeved outside the gear ring 2200, wherein the gear ring 2200 can rotate relative to the body 100 around the rotation axis 2220 and has a plurality of tooth-shaped portions 2202 on the outside. A locking hole is provided on the outside of the support arm 2100, and a locking button 2400 movable in the locking hole. The locking button 2400 is cam-locked with the other end of the connecting shaft for locking the rotation of the connecting shaft and preventing the rotation of the cutter head assembly 300. A shaft hole is provided at a position adjacent to the locking hole on the inner side of the support arm 2100. The receiving space formed between the support arm 2100 and the fixing ring 2220 is used to receive the cutter head assembly 300 and allow the cutter head assembly 300 to rotate. To ensure that the support member rotates relative to the body 100 and is positioned at each angle, at least one elastic protrusion is provided on the inner wall of the fixing ring 2220, and the elastic protrusion is locked and matched with the groove of the tooth-shaped portion 220 to achieve positioning. The gear ring 2200 can rotate relative to the fixing ring 2220, while the fixing ring 2220 is relatively stationary.

[0096] Preferably, the present invention innovatively adopts a fully independent closed waterproof structure in the cutter head structure. The cutter head assembly is relatively independent of the body. The structure of the cutter head assembly and the body is inspired by the four-dimensional vector adaptive structure widely used in the aviation and military industries, that is, two rotary floating nodes are used for connection to achieve multi-angle adjustment in two directions of up, down, left and right:

[0097] First dimension: The cutter head assembly and the body can achieve independent longitudinal rotation of 180° (as Figure 7 shown);

[0098] Second dimension: The overall cutter head assembly and the body can achieve independent lateral rotation of 180° around the central axis of the body (as Figure 8 shown);

[0099] Third dimension: The cutter head and the cutter head net can perform a slight swing of about 5°;

[0100] Fourth dimension: Through the floating structure inside the cutter head, it can achieve a fitting swing that adapts to the facial skin contour.

[0101] Preferably, the present invention can adopt two sets of floating angle adjustment schemes, specifically as follows:

[0102] Electric adjustment: Through the built-in 3D neutral sensing gyroscope, after the consumer sets the optimal shaving angle suitable for himself through the liquid crystal display system on the body and saves the angle setting, the razor can maintain this optimal angle through the vector adaptive structure in various holding postures and angles, and there is no obvious noise and vibration during the whole process of the razor's adaptive angle adjustment.

[0103] Manual adjustment: A manual locking angle button is designed on the side of the support member, and the consumer can manually lock the floating angle through this button to save the overall energy consumption of the body.

[0104] Preferably, the present invention integrates the cutter head, the cutter head net, the cutter head net support ring, the cutter head net support frame, the gear set, the motor, etc. and encapsulates them through a housing with a soft rubber sealing sleeve, forming two relatively independent components with the razor body. It achieves an independent structure similar to an automotive suspension, providing a structural basis for a larger range of cutter head floating on the basis of reducing the structural burden of traditional razors.

[0105] Preferably, the cutter head assembly of the present invention has an IPX7-level waterproof function and is connected to the support member through a magnetic interface, and the consumer can easily remove it for deep rinsing, cleaning, maintenance and servicing.

[0106] Such as Figures 11 - 23As shown, the present invention provides a thirteenth embodiment of a care tool with a rotary cutter head assembly, which includes: a body 1000, a support member 1200 disposed on the body 1000, and a cutter head assembly 1300 supported by the support member 1200. The cutter head assembly 1300 is the same as the cutter head assembly 300 of the first embodiment, that is, it includes a cutter head, a cutter head net that at least partially shields the cutter head, and a power unit that drives the cutter head to rotate. The cutter head assembly 1300 is a separate component independent of the body 1000, and is detachable and can be washed separately. The cutter head can be a cutter head, a brush head, a massage head, a care head, etc.

[0107] The body 1000 extends in a columnar shape in a direction substantially perpendicular to the horizontal plane. It has a body cavity 110 for accommodating a battery inside, and a display screen 1020 is provided on the outside. The display screen 1020 can display parameters such as the working state, battery capacity, battery working time, and the number of times the cutter head is used, and can also be turned on or off by means of a touch screen. The body 1000 includes an outer sleeve 1100 having an inner sleeve cavity 1102, an inner sleeve 1110 located inside the outer sleeve 1100 and accommodated by the inner sleeve cavity 1102, a battery 1030 accommodated by the inner sleeve 1110, and a sealing ring 1032 disposed between the outer sleeve 1100 and the inner sleeve 1110. The bottoms of the outer sleeve 1100 and the inner sleeve 1110 are connected by screws, and the upper ends are fixedly connected by the support member 1200. The upper end of the inner sleeve 1110 is provided with a first arc segment 1112, a second arc segment 1114, an elastic member cavity 1120 surrounded by the first and second arc segments 1112, 1114, a central portion 1122 located in the elastic member cavity 1120, an elastic member 1124 located in the elastic member cavity 1120 and arranged in an arc around the central portion 1122, a pair of stop blocks 1126 disposed at both ends of the elastic member 1124, and a stop groove 1128 located between the two stop blocks 1126. The elastic member 1124 and the stop blocks 1126 can move freely around the central portion 1122 and allow the length of the stop groove 1128 to freely become longer or shorter. The first arc segment 1112 and the second arc segment 1114 form a complete circular arc, and there is a vertical height difference between them. The arc length of the first arc segment 1112 is less than the arc length of the second arc segment 1114. In the vertical direction, the upper surface of the first arc segment 1112 is higher than the upper surface of the second arc segment 1114. The upper surface of the central portion 1122 is coplanar with the upper surface of the second arc segment 1114.

[0108] The support member 1200 is disposed at the top of the fuselage 1000 and is generally L-shaped, including a support arm 1210 located on one side of the fuselage and a support ring 1220 integrally connected to the bottom of the support arm 1210, wherein the support ring 1220 can rotate relative to the fuselage 1000 about a rotation axis. A locking button 1230 and a locking hole 1232 allowing the locking button 1230 to slide therein are provided on the outer side of the support arm 1210. A shaft hole 1212 is provided at a position adjacent to the locking hole 1232 on the inner side of the support arm 1210, and the shaft hole 1212 allows a wire connecting the battery 1030 and the motor to pass through. A support arm inner cavity 1260, a support arm limiting protrusion 1262 disposed in the support arm inner cavity 1260, a stop portion 1270 disposed in the support arm inner cavity 1260, and a screw 1280 for fixedly connecting the stop portion 1270 to the cutter head assembly 1300 are provided in the middle of the support arm 1210. As Figure 22 shown, the stop portion 1270 is generally a flat plate, including at least two stop grooves 1272 located on one side, a limit notch 1274 located on the other side and allowing the support arm limiting protrusion 1262 to reciprocate, a screw hole 1276 allowing the screw 1280 to pass through, and a stop center hole 1278 located at the center. The accommodation space formed between the support arm 1210 and the support ring 1220 is used to accommodate the cutter head assembly 1300 and allows the cutter head assembly 1300 to rotate. There is a central cavity 1240 in the upper end of the support ring 1220 allowing the central portion 1122 to enter, an annular portion 1242 at the bottom of the central cavity 1240, and a screw 1244 that limits the annular portion 1242 and is connected to the fuselage 1000 and allows the annular portion 1242 to rotate relative to it. There is a vertical gap between the lower surface of the screw 1244 and the annular portion 1242. A limit cavity 1222 is provided at the lower end of the support ring 1220, a support base 1226 that isolates the free cavity 1240 from the limit cavity 1222, a limit protrusion 1224 protruding downward and provided on the support base 1226, a limit protrusion 1228 adjacent to the limit protrusion 1224 and located on the outside, and a limit center hole 1229 allowing a part of the central portion 1122 to pass through and located at the center of the limit protrusion 1224. There is a height difference between the bottom end surface of the limit protrusion 1224 and the bottom end surface of the limit protrusion 1228, and the limit protrusion 1224 rotates and moves in the stop groove 1254, while the limit protrusion 1228 moves along the track of the second arc segment 1114 and is limited by the height difference of the steps at both ends of the first arc segment 111. The sealing ring 1032 is disposed adjacent to the elastic member 1250.

[0109] The cutter head assembly 1300 includes a housing 1320, a plurality of cutter head nets 1330 disposed on the housing 1320, and a cutter head net cover 1340 for fixing the cutter head nets 1330 on the housing 1320. A power cavity for accommodating a power unit is provided inside the housing 1320. The cutter head assembly 1300 is interconnected with the support member 1200 through a connecting shaft 1322, and the cutter head assembly 1300 rotates about the connecting shaft 1322 in a first direction. One end of the connecting shaft 1322 is disposed on the housing 1320, and the other end is detachably connected to the shaft hole 1212, or can be connected by a magnetic attraction method, which is more convenient for the disassembly and cleaning of the cutter head assembly 1300. The stop center hole 1278, the connecting shaft 1322, and the shaft hole 1212 are coaxial, and the stop portion 1270 is fixedly connected to the connecting shaft 1322 to ensure that the stop portion 1270 rotates integrally with the connecting shaft 1322. One end of the locking button 1230 is provided with a locking protrusion 1234 that cooperates with the stop groove 1272, thereby being used to lock the rotation of the connecting shaft 322 and prevent the rotation of the cutter head assembly 1300, as Figure 21 shown.

[0110] Therefore, in the present invention, the power unit is separated from the fuselage, and the original space inside the fuselage can be used to increase the battery capacity, extend the product battery life, and reduce the complexity of the internal structure of the fuselage.

[0111] The present invention greatly increases the floating freedom and angle of the cutter head of the electric shaver, solves the problems that the floating and swinging angles of the cutter head on the traditional electric shaver are small, and at the same time, due to the relatively primitive motor technology, noise and vibration will be generated during shaving, and a shaving experience that consumers can perfectly match their facial contours cannot be provided. At the same time, it achieves the unity of compactness and strong performance.

[0112] The present invention forms a plurality of free rotation and movement spaces by using a plurality of axes (the first axis, the second axis) at different angles, and can move freely at any time. It perfectly replaces the traditional appliance that requires relying on the freedom of the human joints to use the product. The moving angle is greater than the moving angle of the human joints, that is, the user can obtain the best experience to the greatest extent, better reach the hair trimming position, and capture the hair with a larger free movement angle. The present invention can be more applied to razors, hair dryers, hair clippers, hair ball trimmers, beauty instruments, moisturizing instruments, hair styling instruments, hair straightening and curling irons, electric toothbrushes, manual hair removal devices, hair removal devices, etc.

[0113] Of course, the above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electric care tool with a rotary cutter head assembly, characterized in that It includes: a fuselage, a support member provided on the fuselage, and a cutter head assembly supported by the support member, wherein the cutter head assembly includes a cutter head, a cutter net at least partially shielding the cutter head, and a power unit for driving the cutter head to rotate, the support member is connected to the fuselage through a rotating shaft, and the support member rotates in a second direction around the rotating shaft; the support member is provided at the top of the fuselage and includes a support arm and a support ring integrally connected to the bottom of the support arm, wherein the support ring can rotate relative to the fuselage around the rotating shaft; the support arm is provided with a support arm inner cavity, a support arm limiting projection provided in the support arm inner cavity, a stop portion provided in the support arm inner cavity and rotating in a first direction, and a stop portion connecting member for fixedly connecting the stop portion to the cutter head assembly; and there is a central cavity in the upper end of the support ring, a ring portion at the bottom of the central cavity, and a fuselage connecting member for limiting the ring portion and connecting it to the fuselage and allowing relative rotational movement of the ring portion; and a limiting cavity is provided at the lower end of the support ring, a support base for isolating the central cavity from the limiting cavity, a limiting projection protruding downward provided on the support base, a limiting protrusion adjacent to the limiting projection, and a limiting central hole located at the center of the limiting projection; the fuselage includes a first arc segment, a second arc segment, an elastic member cavity surrounded by the first and second arc segments, a central portion located in the elastic member cavity, an elastic member arc-shapedly provided around the central portion in the elastic member cavity, a pair of stop blocks provided at both ends of the elastic member, and a stop groove between the two stop blocks, wherein there is a height difference between the bottom end surface of the limiting projection and the bottom end surface of the limiting protrusion, and the limiting projection rotates and moves in the stop groove, while the limiting protrusion moves along the track of the second arc segment and is restricted by the two ends of the first arc segment; the cutter head assembly further includes a cutter net fixing ring for fixing one side of the cutter net, a cutter net support frame for cooperating and fixing the other side of the cutter net, and a gear set for transmission and provided between the cutter head and the power unit.

2. The electric care tool according to claim 1, characterized in that, The cutter head assembly deflects relative to the support member in a first direction.

3. An electric care tool with a rotary cutter head assembly, characterized in that It includes: A body, a support member disposed on the body and rotatable relative thereto, and a cutter head assembly supported by the support member and detachably connected thereto, wherein the cutter head assembly includes a plurality of cutter heads, a plurality of cutter nets at least partially shielding the cutter heads, a power unit for driving the cutter heads to rotate, a cutter net fixing ring for fixing one side of the cutter net, a cutter net support frame cooperating with the other side of the cutter net for fixing, and a speed reduction transmission mechanism for transmission and disposed between the cutter heads and the power unit, and the cutter head assembly is a water-sealed assembly; the support member is connected to the body through a rotating shaft, and the support member rotates about the rotating shaft in a second direction; the support member is disposed at the top of the body and includes a support arm and a support ring integrally connected to the bottom of the support arm, wherein the support ring is rotatable relative to the body about the rotating shaft; the support arm is provided with a support arm inner cavity, a support arm limiting projection disposed in the support arm inner cavity, a stop portion disposed in the support arm inner cavity and rotating in a first direction, and a stop portion connecting member for fixedly connecting the stop portion to the cutter head assembly; and the upper end of the support ring has a central cavity, an annular portion at the bottom of the central cavity, and a body connecting member for limiting the annular portion and connecting to the body and allowing relative rotational movement of the annular portion; and the lower end of the support ring is provided with a limiting cavity, a support base for isolating the central cavity from the limiting cavity, a limiting projection protruding downwardly disposed on the support base, a limiting protrusion adjacent to the limiting projection, and a limiting central hole at the center of the limiting projection; The body includes a first arc segment, a second arc segment, an elastic member cavity surrounded by the first and second arc segments, a central portion located in the elastic member cavity, an elastic member disposed in the elastic member cavity and arc-shaped around the central portion, a pair of stop blocks disposed at both ends of the elastic member, and a stop groove between the two stop blocks, wherein there is a height difference between the bottom end surface of the limiting projection and the bottom end surface of the limiting protrusion, and the limiting projection rotates and moves in the stop groove, while the limiting protrusion moves along the track of the second arc segment and is restricted by the two ends of the first arc segment.

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