Cutter head and personal care equipment

Abstract

The utility model discloses a tool bit, which comprises a shaving unit, the floating piece is arranged on the shaving unit, and a second through hole is formed in the floating piece; the top of the connecting seat is provided with a matching part arranged in the second hole, and a limiting structure is arranged between the second hole and the matching part; the elastic piece is arranged between the shaving unit and the connecting base, one end of the elastic piece is connected with the shaving unit, the other end of the elastic piece is connected with the connecting base, and the degree of freedom of rotation of the shaving unit relative to the connecting base in the circumferential direction is limited; the limiting structure limits displacement of the shaving unit in the circumferential direction and / or the axial direction of the second hole. The utility model further discloses personal care equipment. Therefore, the tool bit is smooth and smooth in floating and free of jamming feeling.

Description

Technical Field

[0001] The utility model relates to the technical field of personal care, in particular to a cutter head and a personal care device. Background Art

[0002] Personal care devices include razors, nose trimmers, and body hair trimmers. These devices typically consist of a cutter assembly with a protective screen, a motor, and a body. When using a hair trimmer, hair is inserted into the holes in the screen, and the motor drives the blades in the cutter assembly to cut the hair. These devices are safe, comfortable, and convenient to use.

[0003] To ensure a more comfortable and efficient shave, the cutting portion of a shaver, which contacts the user's skin, should be able to float or rotate relative to the grip of the shaver to conform to the user's skin surface. Furthermore, consideration should be given to ensuring that the motion of the motor in the grip is stably and effectively transmitted to the cutting portion during this floating or rotating process. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a cutter head and a personal care device so that the cutter head can float smoothly and flexibly without any sense of jamming, thereby improving the user experience.

[0005] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a cutter head.

[0006] include,

[0007] Shaving unit;

[0008] a floating member, provided on the shaving unit, wherein the floating member is provided with a second through hole;

[0009] A connecting seat, the top of which has a matching portion disposed in the second hole, and a limiting structure is provided between the second hole and the matching portion;

[0010] an elastic member disposed between the shaving unit and the connecting base, one end of the elastic member being connected to the shaving unit and the other end being connected to the connecting base, so as to limit the shaving unit's freedom of rotation in a circumferential direction relative to the connecting base;

[0011] The limiting structure limits the displacement of the shaving unit along the circumferential and / or axial direction of the second hole.

[0012] Furthermore, the shaving unit comprises:

[0013] A support seat, wherein the support seat is provided with a first hole, and the first hole passes through the support seat;

[0014] The floating member is in contact with the support seat, and at least a portion of the floating member is disposed in the first hole.

[0015] Furthermore, the first end of the elastic member is connected to the support seat, the second end of the elastic member is connected to the connecting seat, and the support seat is flexibly connected to the connecting seat through the elastic member.

[0016] Furthermore, the first end of the elastic member is at least partially sandwiched between the support seat and the floating member.

[0017] Furthermore, an annular groove is provided on the outer wall of the connecting seat, at least one limiting rib is provided in the annular groove, and at least one limiting portion is provided at the second end of the elastic member, and the limiting rib is connected to the limiting portion so that the elastic member is clamped on the connecting seat.

[0018] Furthermore, the limiting structure includes:

[0019] a limiting member, arranged on the inner wall of the floating member;

[0020] A limiting portion, provided on the connecting seat and cooperating with the limiting member;

[0021] The limiting members are distributed circumferentially along the center line of the second hole. At least a portion of the limiting members is disposed in the limiting portion, and the limiting portion limits the circumferential movement range of the limiting members.

[0022] Furthermore, the limiting member includes at least one limiting plate, adjacent limiting plates are circumferentially spaced apart along the center line of the second hole, and the limiting plates extend radially and axially along the center line of the second hole.

[0023] Furthermore, the limiting portion is arranged at one end of the connecting seat, and the limiting portion extends from the radial outer side to the radial inner side of the connecting seat. One end of the connecting seat is connected to the handle, and the other end of the connecting seat is connected to the floating part.

[0024] Furthermore, the second hole has a first arc surface, and the surface of the matching portion has a second arc surface matching the first arc surface.

[0025] Furthermore, the support seat is circumferentially distributed with at least one limiting protrusion along the center line of the first hole, and the floating member is provided with at least one card slot, which is circumferentially arranged along the center line of the second hole, and the limiting protrusion is clamped in the card slot so that the floating member is connected in the first hole.

[0026] Furthermore, the cutter head also includes a floating pressure plate, the edge of the floating pressure plate is clamped between the floating part and the support seat, and the floating pressure plate covers the top of the floating part, a limiting block is provided on the support seat, and the edge of the floating pressure plate is provided with pressure blocks corresponding to the number of the limiting blocks, and the pressure blocks extend radially outward along the floating pressure plate, and the pressure blocks are at least partially clamped with the limiting blocks.

[0027] Furthermore, the inner wall of the connecting seat is provided with a flange, and the flange extends radially inwardly along the connecting seat. The cutter head also includes an elastic portion, and two ends of the elastic portion are respectively in contact with the floating pressure plate and the flange.

[0028] The second aspect of the present invention provides a personal care device, comprising a body and a cutter head as described above, wherein the body is detachably connected to a connecting seat in the cutter head, and the cooperation of the connecting seat, the floating part, and the elastic part limits the circumferential and / or axial displacement of the shaving unit relative to the body.

[0029] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0030] (1) In the present invention, a limiting portion is provided on the floating member to limit the circumferential rotation of the floating member or the shaving unit relative to the connecting seat. At the same time, an elastic member is provided to connect the shaving unit and the connecting seat, respectively, to limit the circumferential rotational freedom of the shaving unit relative to the connecting seat. When circumferential rotation of the shaving unit is unavoidable, the limiting action of the elastic member provides a buffering effect for the limiting portion, thereby reducing the sense of stagnation and improving the user experience.

[0031] (2) In the present invention, an elastic member is provided to limit the movement of the shaving unit relative to the connecting seat, and a limiting portion is provided to limit the rotation of the floating member relative to the connecting seat, thereby limiting the rotation of the shaving unit relative to the connecting seat. By providing a multi-layer limiting structure, the shaving unit is prevented from undergoing large-scale circumferential movement, while ensuring that it can float or rotate slightly, so that the movement of the motor can be stably and effectively transmitted to the cutting part.

[0032] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are part of this utility model and are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. Obviously, the drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0034] In the drawings of the specification:

[0035] Figure 1 is a schematic diagram of the exploded structure of a personal care device in this specific embodiment;

[0036] Figure 2 is a schematic cross-sectional structure diagram of a cutter head in this specific embodiment;

[0037] Figure 3 This is a schematic diagram of the connection structure of a support seat, a floating member and a connecting seat in a cutter head in this specific embodiment;

[0038] Figure 4 This is a schematic structural diagram of a support seat in a cutter head in this specific embodiment;

[0039] Figure 5 This is a schematic structural diagram of a connecting seat in a cutter head in this specific embodiment;

[0040] Figure 6 This is a schematic structural diagram of a floating pressure plate in a cutter head in this specific embodiment;

[0041] Figure 7 This is a schematic structural diagram of an elastic member in a cutter head in this specific embodiment;

[0042] Figure 8 This is a schematic structural diagram of an elastic member in a cutter head in this specific embodiment at another angle;

[0043] Figure 9 It is a structural schematic diagram of a floating part in a cutter head in this specific embodiment.

[0044] Reference numerals:

[0045] 100, support seat; 110, first hole; 120, limit block; 130, inner annular surface; 140, outer annular surface; 150, limit protrusion;

[0046] 200, floating member; 210, second hole; 220, limiting member; 2200, limiting plate; 230, slot; 240, inner circumference; 250, outer circumference; 260, limiting slot;

[0047] 300, connecting seat; 310, first connecting seat; 3100, limiting portion; 320, second connecting seat; 3200, annular groove; 3210, limiting rib; 3220, flange;

[0048] 400, elastic member; 410, limiting portion; 420, inner annular wall; 430, outer annular wall; 440, limiting groove; 450, limiting groove;

[0049] 500, floating pressure plate; 510, pressure block;

[0050] 600, elastic part;

[0051] 700. Cutting head assembly.

[0052] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0054] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0055] In the prior art field of personal care products, such as electric personal care devices, most cutter head assemblies 700 are connected to a support structure via a floating cutter head structure. This requires ensuring that the motion of the motor in the gripping portion is stably and effectively transmitted to the cutting portion during floating or rotation. However, when the cutter head assembly 700 undergoes significant circumferential rotation relative to the support structure, the motor's motion cannot be stably and effectively transmitted to the cutting portion, resulting in inability to perform care tasks or generally low efficiency, leading to a poor user experience.

[0056] To address this technical challenge, conventional technology redesigns the floating structure of the blade head by adding a corresponding restraining structure. However, due to the unreasonable design structure, the floating structure of the blade head is not smooth, stiff, and has a stuck feeling during shaving, which poorly affects the user experience.

[0057] Based on the identification of the above-mentioned technical problems, the present invention has rationally designed a floating structure for the cutter head. A stopper 3100 is provided on the floating member 200 to limit the circumferential rotation of the floating member 200 or the shaving unit connected to the floating member 200 relative to the connecting base 300. Furthermore, an elastic member 400 is provided, connecting the shaving unit and the connecting base 300, to limit the circumferential rotational freedom of the shaving unit relative to the connecting base 300. If rotation of the shaving unit is unavoidable, the position of the elastic member 400 provides a buffer for the position of the stopper 3100, reducing any sense of shaving lag and improving the user experience.

[0058] See Figure 1-9 As shown, the present invention provides a razor head, comprising a shaving unit, a floating member 200, a connecting seat 300, and an elastic member 400. The floating member 200 is disposed on the shaving unit. The floating member 200 is provided with a second hole 210, which passes through the floating member 200. The connecting seat 300 is disposed at the second hole 210. The top of the connecting seat 300 has a mating portion that is placed in the second hole 210. A limiting structure is provided between the second hole 210 and the mating portion, and the bottom of the connecting seat 300 can extend out of the floating member 200. The elastic member 400 is disposed between the shaving unit and the connecting seat 300. One end of the elastic member 400 is connected to the shaving unit, and the other end of the elastic member 400 is connected to the connecting seat 300, thereby limiting the shaving unit's freedom of rotation in the circumferential direction relative to the connecting seat 300. The limiting structure limits the circumferential and / or axial displacement of the shaving unit along the second hole 210.

[0059] See Figure 1 、 Figure 3 and Figure 4 The shaving unit includes a support base 100 , which is provided with a first hole 110 , and the first hole 110 passes through the support base 100 ; the floating member 200 abuts against the support base 100 , and at least a portion of the floating member 200 is disposed in the first hole 110 .

[0060] The support base 100 includes a shell having an inner annular surface 130 and an outer annular surface 140, and has a certain thickness. The support base 100 is configured with a variable diameter, with an upwardly facing trumpet-shaped opening. This can also be understood as the upper diameter of the support base 100 being larger than the lower diameter. A first hole 110 is provided through the support base 100, and the floating member 200 is at least partially disposed in the first hole 110, connecting the support base 100 and the floating member 200.

[0061] Please see Figure 2 The specific connection relationship between the floating member 200 and the support seat 100 is described below.

[0062] Specifically, the upper end of the floating member 200 extends into the first hole 110, and the lower end of the floating member 200 may protrude from the support base 100. The cross-sectional area of ​​the upper end of the floating member 200 may be larger than the cross-sectional area of ​​the lower end of the first hole 110. After the floating member 200 enters the first hole 110 from the upper end of the support base 100, the lower end of the floating member 200 extends out of the first hole 110. The upper end of the floating member 200 engages with the inner wall of the first hole 110 to ensure that the upper end of the floating member 200 is as closely embedded in the first hole 110 as possible, thereby ensuring the connection strength between the floating member 200 and the support base 100. The upper end of the floating member 200 engages with the inner annular surface 130 to prevent the floating member 200 from falling out of the first hole 110 and the support base 100. The weight of the floating member 200 also ensures the connection strength between the floating member 200 and the support base 100. Alternatively, a snap-fit ​​structure may be provided at the lower end of the support base 100 to directly engage with the floating member 200. Alternatively, the support seat 100 and the floating member 200 are integrally formed by injection molding.

[0063] Specifically, the floating member 200 is provided with an inner peripheral surface 240 and an outer peripheral surface 250. It can be seen that the shape of the floating member 200 matches that of the support base 100, thereby ensuring the embedding accuracy of the floating member 200 and the support base 100.

[0064] Specifically, the outer peripheral surface 250 of the floating member 200 is fitted with the inner annular surface 130 of the support seat 100 , thereby enabling the floating member 200 to be embedded in the support seat 100 .

[0065] Please continue to see Figure 2 The specific connection relationship between the connecting seat 300 and the floating member 200 is described below.

[0066] Specifically, the floating member 200 is provided with a second hole 210 for connecting to the connecting seat 300. Similar to the connection relationship between the floating member 200 and the supporting seat 100 described above, the connecting seat 300 is also embedded in the floating member 200.

[0067] Specifically, the inner circumferential surface 240 of the floating member 200 extends downwardly at an angle and is provided with a second hole 210 at its bottom end. The upper end of the connecting base 300 is embedded in the second hole 210, and the lower end of the connecting base 300 can extend beyond the floating member 200, facilitating connection of the connecting base 300 to the handle. The upper end of the connecting base 300 is in contact with the inner circumferential surface 240 of the floating member 200. Alternatively, the connecting base 300 can be snapped onto the floating member 200, with its lower end extending out of the second hole 210 and its upper end fixed to the inner circumferential surface 240 of the floating member 200. The strength of the engagement is ensured by the weight of the connecting base 300.

[0068] Specifically, the portion of the connecting seat 300 that connects to the inner circumferential surface 240 of the floating member 200 is configured as a first connecting seat 310, and the portion of the connecting seat 300 that extends out of the second hole 210 is configured as a second connecting seat 320. The first connecting seat 310 is disposed above the second connecting seat 320. The configuration of the first connecting seat 310 matches that of the floating member 200, thereby ensuring a precise fit.

[0069] See Figure 1 、 Figure 2 and Figure 7 In this embodiment, the elastic portion 600 is configured as an elastic member 400. The first end of the elastic member 400 is connected to the support base 100, and the second end of the elastic member 400 is connected to the connecting base 300. The support base 100 is flexibly connected to the connecting base 300 via the elastic member 400. The purpose of adopting a flexible connection here is to ensure that when the floating structure of the cutter head is in operation, if the support base 100 is forced to rotate, it will not be directly forcibly limited. Instead, it acts as a flexible buffer limit, avoiding a sense of jamming for the user and improving the user's experience and comfort.

[0070] Please see Figure 2 The specific connection relationship between the elastic member 400 and the support base 100 and the connecting base 300 is described below.

[0071] The elastic member 400 is disposed outside the floating member 200 and is provided with an inner annular wall 420 and an outer annular wall 430. The elastic member 400 is provided with a first end and a second end.

[0072] Specifically, the first end of the elastic member 400 is recessed radially inward to provide a plurality of limiting grooves 450, and a plurality of limiting protrusions 150 are circumferentially provided on the support seat 100. The limiting protrusions 150 are snapped into the limiting grooves 450 to connect the elastic member 400 with the support seat 100. While ensuring that the elastic member 400 is embedded in the support seat 100, the elastic member 400 serves as a limit for the support seat 100, so that the support seat 100 is restricted by the elastic member 400 when rotating circumferentially.

[0073] Specifically, the second end of the elastic member 400 extends radially inward a certain length and engages with the second connecting seat 320, so that the elastic member 400 acts as a limiter on the connecting seat 300, limiting the circumferential rotation of the connecting seat 300. At this point, the first end of the elastic member 400 limits the support seat 100, and the second end of the elastic member 400 limits the connecting seat 300. The razor's cutting head is detachably connected to the handle via the connecting seat 300. The connecting seat 300 and the handle are relatively fixed in position. During shaving, the cutting head is subjected to pressure from the shaved area, causing it to float and conform to the face. The elastic member 400 limits the displacement of the support seat 100 relative to the connecting seat 300.

[0074] As a specific embodiment, the elastic member 400 is made of soft rubber material to ensure that when the support seat 100 cannot avoid rotating, the elastic member 400 has a buffering effect when limiting the position, so that the support seat 100 will not be directly hard-limited, thereby reducing the sense of jamming in the user experience.

[0075] See Figure 1 、 Figure 2 and Figure 3 The following is a description of the installation process of the support base 100, the floating member 200, the elastic member 400 and the connecting base 300.

[0076] Specifically, the elastic member 400 is first embedded in the support seat 100, and then the floating member 200 is embedded in the support seat 100 through the first hole 110, and the floating member 200 covers the top of the elastic member 400, and then the connecting seat 300 is embedded in the floating member 200 through the second hole 210.

[0077] Specifically, the first end of the elastic member 400 is engaged with the supporting base 100 , and the second end of the elastic member 400 is engaged with the connecting base 300 .

[0078] See Figure 2 In this embodiment, the first end of the elastic member 400 is at least partially sandwiched between the support seat 100 and the floating member 200 .

[0079] Specifically, as previously mentioned, the floating member 200 is disposed over the upper end of the elastic member 400, which is embedded in the support base 100. The outer annular wall 430 of the elastic member 400 is disposed in contact with the inner annular surface 130 of the support base 100, and the outer annular wall 430 of the elastic member 400 is disposed above the inner annular surface 130 of the support base 100. In other words, the first end of the elastic member 400 is at least partially sandwiched between the support base 100 and the floating member 200 to ensure the stability of the elastic member 400 in the axial direction.

[0080] See Figure 2 and Figure 5In this embodiment, an annular groove 3200 is provided on the outer wall of the connecting seat 300, and at least one limiting rib 3210 is provided in the annular groove 3200. The second end of the elastic member 400 is provided with at least one limiting portion 410. The limiting rib 3210 is connected to the limiting portion 410 and is configured to limit the axial and / or circumferential freedom of the elastic member 400 relative to the connecting seat 300.

[0081] Specifically, an annular groove 3200 is recessed inwardly on the outer wall of the second connecting base 320 to engage the second end of the elastic member 400. A limiting portion 410 extends inwardly from the second end of the elastic member 400, and the limiting portion 410 engages in the annular groove 3200 to achieve the engagement between the elastic member 400 and the connecting base 300.

[0082] Specifically, limiting ribs 3210 are provided in the annular groove 3200 along the radial and axial directions to engage with the limiting portion 410 on the elastic member 400. A plurality of limiting portions 410 are distributed circumferentially in the annular groove 3200. The limiting portion 410 is provided with the same number of limiting grooves 440 as the limiting ribs 3210 to engage with the limiting ribs 3210 at corresponding positions. The limiting grooves 440 are formed by being recessed outward from one side of the limiting portion 410 close to the center. When the second end of the elastic portion 600 is connected to the connecting seat 300, the limiting rib 3210 is engaged with the limiting groove 440 at the corresponding position. The limiting grooves 440 limit the rotation of the connecting seat 300 in the circumferential direction.

[0083] See Figure 1 and Figure 9 In this embodiment, the limiting members 220 are evenly distributed around the inner wall of the second hole 210. The limiting members 220 include at least one limiting plate 2200. Adjacent limiting plates 2200 are circumferentially spaced apart along the centerline of the second hole 210. The limiting plates 2200 extend radially and axially along the centerline of the second hole 210.

[0084] Please see Figure 9 A plurality of limiting members 220 are extended on the inner circumferential surface 240 of the floating member 200 to limit the rotation of the connecting seat 300 in the circumferential direction.

[0085] Specifically, each limiting member 220 includes two limiting plates 2200 , and there is a certain distance between the two limiting plates 2200 . By setting two limiting plates 2200 , the limiting strength during the limiting process can be guaranteed, avoiding improper limiting when only one limiting plate 2200 is present.

[0086] See Figure 5 In this embodiment, the limiting portion 3100 is arranged at one end of the connecting seat 300, and the limiting portion 3100 extends from the radial outer side to the radial inner side of the connecting seat 300, and one end of the connecting seat 300 is embedded in the second hole 210.

[0087] Specifically, a limiting portion 3100 is provided at the edge of the first connecting base 310, and the limiting portion 3100 is recessed from the edge of the first connecting base 310 toward the center. A portion of the limiting member 220 is disposed within the limiting portion 3100 to limit the circumferential rotation angle of the limiting member 3100. It can also be understood that the limiting member 220 limits the circumferential rotation angle of the connecting base 300. The circumferential width of the limiting portion 3100 is greater than the width of the limiting member 220, which allows the first connecting base 310 to rotate at a small angle relative to the connecting base 300. If the rotation exceeds a critical value, it will be restricted.

[0088] As a specific embodiment, the limiter 220 is made of hard rubber material, and when the soft rubber limit fails, it limits the rotation of the support base 100. At the same time, the user first uses the soft rubber limit, and then buffers the transition to the hard rubber limit, effectively reducing the user's sense of lag.

[0089] See Figure 9 In this embodiment, the side of the floating member 200 close to the second hole 210 is at least partially set as an arc plate, the inner arc surface of the arc plate faces the center line of the second hole 210, and the limit member 220 is protruded on the inner arc surface of the arc plate.

[0090] Specifically, as mentioned above, the floating member 200 is provided with an inner circumferential surface 240 and an outer circumferential surface 250. It can be understood here that the inner circumferential surface 240 is provided as an arc-shaped plate, and the limiting member 220 is formed by extending upward from the inner arc surface of the arc-shaped plate, and at the same time, there are four extending along the circumference of the inner arc surface. The purpose is to ensure that when limiting the rotation of the connecting seat 300, the force is uniform and the limiting efficiency is higher.

[0091] See Figure 2 and Figure 9 In this embodiment, one end of the connecting seat 300 extends from the radial inner side to the radial outer side with a variable diameter and inclination, so that the outer surface extending from the connecting seat 300 forms a spherical or arc surface structure. When the connecting seat 300 is embedded in the second hole 210, the spherical or arc surface structure fits with the arc plate.

[0092] Specifically, as previously described, the connection base 300 includes a first connection base 310 and a second connection base 320. This description primarily focuses on the first connection base 310. The shape of the first connection base 310 is identical to that of the floating member 200. The first connection base 310 is configured with an upwardly directed trumpet-shaped opening. The inner surface of the first connection base 310 is an annular surface, and the inner diameter of the first connection base 310 gradually decreases from top to bottom. The first connection base 310 and the second connection base 320 are preferably integrally formed.

[0093] See Figure 3 and Figure 4 In this embodiment, the support seat 100 has at least one limit block 120 distributed circumferentially along the center line of the first hole 110, and the floating member 200 is provided with at least one card slot 230, which is arranged circumferentially along the center line of the second hole 210. The limit block 120 is snapped into the card slot 230 so that the floating member 200 is connected to the first hole 110.

[0094] Specifically, a limit block 120 extends upward from the inner annular surface 130 of the support base 100. Multiple limit blocks 120 are distributed around the circumference of the inner annular surface 130 to engage the floating member 200. A plurality of slots 230 are recessed inwardly along the outer edge of the floating member 200, and the number of slots 230 is the same as the number of limit blocks 120. When the floating member 200 is embedded in the support base 100, the limit blocks 120 engage with the slots 230, securing the floating member 200 to the support base 100.

[0095] Please continue to see Figure 3 and Figure 4 The support seat 100 has at least one limiting protrusion 150 distributed circumferentially along the center line of the first hole 110, and the floating member 200 is provided with at least one limiting groove 260. The limiting groove 260 is circumferentially arranged along the center line of the second hole 210. The limiting protrusion 150 is clamped in the limiting groove 260 and is configured to limit the circumferential rotation of the floating member 200.

[0096] Specifically, a limiting protrusion 150 extends upward from the inner annular surface 130 of the support base 100. The limiting protrusion 150 and the limiting block 120 are spaced apart. A limiting groove 260 is recessed inwardly on the outer edge of the floating member 200. The limiting groove 260 and the locking groove 230 are spaced apart. The number of limiting grooves 260 is the same as the number of limiting protrusions 150. When the floating member 200 is embedded in the support base 100, the limiting protrusion 150 engages with the limiting groove 260 to limit the circumferential rotation of the floating member 200 relative to the support base 100.

[0097] Preferably, the limiting groove 260 is configured as a semicircular groove to facilitate snap-in connection with the limiting protrusion 150 .

[0098] See Figure 2 and Figure 5 In this embodiment, the floating structure further includes a floating pressure plate 500 , the edge of the floating pressure plate 500 is clamped between the floating member 200 and the support seat 100 , and the floating pressure plate 500 covers the floating member 200 .

[0099] The floating pressure plate 500 covers the floating member 200 to limit the axial movement of the floating member 200 .

[0100] Please see Figure 8 In this embodiment, the edge of the floating pressure plate 500 is provided with pressure blocks 510 corresponding to the number of the limit blocks 120. The pressure blocks 510 extend radially outward along the floating pressure plate 500, and the pressure blocks 510 are at least partially engaged with the limit blocks 120.

[0101] The connection relationship between the floating pressure plate 500 and the support base 100 is described below.

[0102] Specifically, a pressure block 510 is provided radially outward from the outer edge of the floating pressure plate 500. The number of pressure blocks 510 provided is the same as the number of limit blocks 120. The limit block 120 comprises a first section and a second section. The first section extends upward from the inner annular surface 130 of the support base 100, while the second section extends from the extended end of the first section toward the centerline of the support base 100. The floating pressure plate 500 extends into the bottom surface of the second section, which is used to limit the axial displacement of the floating pressure plate 500.

[0103] See Figure 2 In this embodiment, a flange 3220 is provided on the inner wall of the connecting seat 300, and the flange 3220 extends radially inwardly along the connecting seat 300. The cutter head floating structure also includes an elastic portion 600, and the two ends of the elastic portion 600 are respectively in contact with the floating pressure plate 500 and the flange 3220.

[0104] Specifically, as previously described, the connection base 300 includes a first connection base 310 and a second connection base 320. The second connection base 320 will be described in detail below. A flange 3220 extends inward from the inner wall of the second connection base 320 to support the elastic portion 600. The floating pressure plate 500 overlies the connection base 300 and has an extension extending toward the connection base 300. The other end of the elastic portion 600 is engaged with the extension, thereby securing the elastic portion 600 between the floating pressure plate 500 and the flange 3220.

[0105] As a specific implementation, the elastic portion 600 is configured as a spring.

[0106] Example 2

[0107] See Figure 1-9 As shown, this embodiment provides a personal care device, including a body and the cutter head in Example 1, the cutter head including a shaving unit, a floating part, a connecting seat, and an elastic part, the shaving unit including a cutter head assembly 700, a support seat 100, and a transmission assembly, the cutter head assembly 700 is detachably connected to the support seat 100, the transmission assembly is installed on the support seat 100, the body is fixedly connected to the connecting seat 300 in the cutter head, and the cooperation of the floating part, the connecting seat, and the elastic part limits the circumferential and axial displacement of the cutter head assembly 700 relative to the body.

[0108] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, they are not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A cutter head, characterized in that: include, Shaving unit; a floating member, provided on the shaving unit, wherein the floating member is provided with a second through hole; A connecting seat, the top of which has a matching portion disposed in the second hole, and a limiting structure is provided between the second hole and the matching portion; an elastic member disposed between the shaving unit and the connecting base, one end of the elastic member being connected to the shaving unit and the other end being connected to the connecting base, so as to limit the shaving unit's freedom of rotation in a circumferential direction relative to the connecting base; The limiting structure limits the displacement of the shaving unit along the circumferential and / or axial direction of the second hole.

2. A cutter head according to claim 1, characterized in that: The shaving unit comprises: A support seat, wherein the support seat is provided with a first hole, and the first hole passes through the support seat; The floating member is connected to the support seat, and at least a portion of the floating member is disposed in the first hole.

3. A cutter head according to claim 2, characterized in that: The first end of the elastic member is connected to the support seat, the second end of the elastic member is connected to the connecting seat, and the support seat is flexibly connected to the connecting seat through the elastic member.

4. A cutter head according to claim 3, characterized in that: The first end of the elastic member is at least partially sandwiched between the support seat and the floating member.

5. The cutter head according to claim 3, characterized in that: An annular groove is provided on the outer wall of the connecting seat, and at least one limiting rib is provided in the annular groove. The second end of the elastic member is provided with at least one limiting portion, and the limiting rib is connected to the limiting portion so that the elastic member is clamped on the connecting seat.

6. The cutter head according to claim 1, characterized in that: The limiting structure includes: a limiting member, arranged on the inner wall of the floating member; A limiting portion, provided on the connecting seat and cooperating with the limiting member; The limiting members are distributed circumferentially along the center line of the second hole. At least a portion of the limiting members is disposed in the limiting portion, and the limiting portion limits the circumferential movement range of the limiting members.

7. The cutter head according to claim 6, characterized in that: The limiting member includes at least one limiting plate, adjacent limiting plates are circumferentially spaced apart along the center line of the second hole, and the limiting plates extend radially and axially along the center line of the second hole.

8. The cutter head according to claim 6, characterized in that: The limiting portion is arranged at one end of the connecting seat, and the limiting portion extends from the radial outer side to the radial inner side of the connecting seat. One end of the connecting seat is connected to the handle, and the other end of the connecting seat is connected to the floating member.

9. The cutter head according to claim 1, characterized in that: The second hole has a first arc surface, and the surface of the matching portion has a second arc surface matching the first arc surface.

10. The cutter head according to claim 2, characterized in that: The support seat is circumferentially distributed with at least one limiting protrusion along the center line of the first hole, and the floating member is provided with at least one limiting groove, which is circumferentially arranged along the center line of the second hole. The limiting protrusion is clamped in the limiting groove and is configured to limit the circumferential rotational freedom of the floating member.

11. The cutter head according to claim 2, characterized in that: The cutter head also includes a floating pressure plate, the edge of which is clamped between the floating part and the support seat, and the floating pressure plate covers the floating part. A limiting block is provided on the support seat, and the edge of the floating pressure plate is provided with pressure blocks corresponding to the number of the limiting blocks. The pressure blocks extend radially outward along the floating pressure plate, and the pressure blocks are at least partially clamped with the limiting blocks.

12. The cutter head according to claim 11, characterized in that: The inner wall of the connecting seat is provided with a flange, and the flange extends inwardly along the radial direction of the connecting seat. The cutter head further comprises an elastic portion, and two ends of the elastic portion are respectively in contact with the floating pressure plate and the flange.

13. A personal care device, characterized in that The shaving unit comprises a body and a cutter head as claimed in any one of claims 1 to 12, wherein the body is detachably connected to a connecting seat in the cutter head, and the cooperation of the connecting seat, the floating member and the elastic member limits the circumferential and / or axial displacement of the shaving unit relative to the body.

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