CN115319808A - A cutter head assembly and electric shaver - Google Patents

Abstract

The invention discloses a cutter head assembly which comprises a cutter head support, a cutting unit and a refrigerating piece, wherein the cutter head support is provided with a first mounting cavity penetrating through the upper end and the lower end of the cutter head support, the cutting unit is mounted in the first mounting cavity and is exposed to the upper end of the cutter head support, the refrigerating piece is provided with a refrigerating surface and a radiating surface, the cutting unit is in contact heat transfer with the refrigerating surface, the cutter head support is in contact heat transfer with the radiating surface, and at least part of the refrigerating piece and the cutting unit move synchronously. The cutter head assembly provided by the invention can reduce the heat conduction loss between the refrigerating piece and the skin area to be cooled, effectively ensure the refrigerating effect, is simultaneously suitable for the floating type electric shaver, and can reduce the risk of shortening the service life of the electric element arranged in the holding part due to the temperature rise of the holding part. The invention also provides an electric shaver.

Description

A cutter head assembly and electric shaver

technical field

The invention belongs to the technical field of personal care appliances and grooming trimming products, and in particular relates to a cutter head assembly and an electric shaver.

Background technique

When the electric shaver is working, the high-speed relative rotation and friction between the blades in the cutting unit will generate a lot of heat between the blades to increase the temperature of the cutting unit. When the skin is in contact with the cutting unit, this high temperature will cause the skin to produce discomfort.

Various cooling devices for electric shavers have been described in the prior art. The cooling devices in the prior art are usually arranged in the handle and dissipate heat through the handle housing. This structure tends to increase the temperature of the handle. , so that there is a risk of shortening the life of the electrical components installed in the grip. In addition, energy loss easily occurs during the process of transferring the energy of the cooling surface of the Peltier element from the holding portion to the cutting unit in contact with the user's skin, resulting in poor cooling effect.

In order to better fit the user's face, electric shavers usually include a floating structure that can adjust the cutting unit to float in different directions according to the curves of the face and neck. The cooling device disclosed in the prior art is not suitable for floating shavers. Based on this, it is necessary to provide an electric shaver with good cooling effect and suitable for floating structure.

Contents of the invention

An object of the present invention is to provide an electric shaver that solves one or more of these problems. The present invention provides a cutter head assembly and an electric shaver comprising a cooling element having a cooling surface and a heat dissipation surface , the cooling surface is in contact with the cutting unit for heat transfer, and at least part of the cooling part moves synchronously with the cutting unit, which effectively reduces the discomfort caused to the user due to the temperature rise of the cutting unit when the electric shaver is working, and improves the user experience.

The technical solution of the present invention is to provide a cutter head assembly, comprising:

The cutter head bracket is provided with a first installation cavity passing through its upper and lower ends;

a cutting unit, installed in the first installation cavity and exposed to the upper end of the cutter head bracket;

The refrigeration component has a cooling surface and a heat dissipation surface;

Wherein, the cutting unit is in contact with the cooling surface to transfer heat, the cutter head support is in contact with the heat dissipation surface to transfer heat, and at least part of the cooling element moves synchronously with the cutting unit.

The technical solution of the present invention provides a cutter head assembly, which includes a cooling element with a cooling surface and a heat dissipation surface, the cooling surface is in contact with the cutting unit for heat transfer, and at least part of the cooling element moves synchronously with the cutting unit, and the cooling element is located at The shaving head is connected with the cutting unit, which can reduce the energy loss in the process of transferring heat to the user, and effectively ensure the cooling effect. The cooling part and the cutting unit move synchronously. During the shaving process, the cooling part is always in contact with the user's skin , when the cutting unit floats relative to the shaving head support part or the grip part, the cooling effect is not affected, and at the same time, the heat cooled relative to the ambient temperature is accurately conducted to the part where the user is in contact with the cutting unit.

Further, at least part of the cooling element can move relative to the cutter head support, and at least part of the heat dissipation surface is always connected with the cutter head support during the movement of the cooling element relative to the cutter head support, Make sure cooling is working properly.

Further, the cutting unit includes a cutter head holder, the cutter head holder is provided with a second installation cavity, and at least part of the cooling element is embedded in the second installation cavity. The cooling element can have a height H, the second installation cavity has a depth h, and the cutter head assembly satisfies the condition H>h, that is, the height of the cooling element is greater than the depth h of the second installation cavity so that a part of the second installation cavity is exposed and contacts the cutter head bracket , at this moment, the cutter head holder and the cutter head holder are separated by the cooling element without direct contact, thereby avoiding the heat generated in the cooling member being heated relative to the environment from being conducted from the cutter head holder to the cutter head holder.

Further, the cooling element has an inner diameter r, the first installation cavity has a diameter R, and the cutter head assembly satisfies R>r. When this condition is satisfied, when the cutting unit is installed in the first installation cavity, it will be in contact with the inner wall of the cooling element but not directly in contact with the cutter head holder, thereby avoiding the heat generated in the cooling member from being heated relative to the environment from the cutter head holder Conducted to the head holder.

Further, the cutting unit also includes a limit bracket for installing the cutting unit in the first installation cavity, one end of the limit bracket is connected to the tool head frame, and the other end of the limit bracket is connected to the Blade holder.

Further, the cutter head holder and the cutter head holder are made of heat-conducting materials, and the limiting brackets are made of heat-insulating materials. The cutter head holder and the cutter head holder are heat-conducting materials, the cooling part transfers the heat that can be cooled relative to the ambient temperature to the user through the cutter head holder, and the cooling part dissipates the heat that can be heated relative to the ambient temperature to the environment through the cutter head holder Among them, the thermally conductive material can be metal, or the thermally conductive material can be other conductive materials such as graphite. Thermal conductive silicone grease is provided between the cooling element and the cutter head holder and/or the cutter head holder, which can improve cooling and/or heat dissipation efficiency. The limit bracket made of heat insulating material is used to flexibly connect the cutter head holder to the cutter head holder, so as to avoid the heat generated in the cooling part that is heated relative to the environment from the cutter head holder to the cutter head holder, and at the same time avoid the cooling part The heat that is cooled relative to the environment is conducted from the cutter head holder to the cutter head holder, resulting in poor cooling effect.

Further, a heat insulating layer is provided on the cutter head support and/or the cutting unit for blocking heat conduction between the cutter head support and the cutting unit. The heat insulating layer can be a heat insulating coating, which is arranged on the surface adjacent to the cutter head support and the cutting unit, or arranged on the surface adjacent to the cutting unit and the cutter head support. The heat insulating layer can also be a heat insulating member, which is installed between the cutter head support and the cutting unit, so as to prevent the heat generated in the cooling member from being heated relative to the environment from being conducted from the cutter head support to the cutter head holder.

Further, the refrigerating elements include at least two, and every two adjacent refrigerating elements are spaced apart from each other, so that the heat conduction between each adjacent two refrigerating elements can be isolated to ensure the cooling effect. Preferably, the number of cooling elements is equal to the number of cutting units, and each cutting unit is equipped with cooling elements to provide cooling effect all the time during the shaving process.

Another object of the present invention is to provide an electric shaver, which includes a grip and a shaving head mounted on the grip, the electric shaver includes the above-mentioned cutter head assembly, and the shaver is also Including a supporting part, the cutter head assembly and the supporting part have:

a connected state in which the cutter head assembly and the support portion are connected to each other for operation of the cutting unit;

and a disengaged state in which the cutter head assembly and the support part are separated from each other for removing the cutter head assembly from the support part to clean the cutting unit;

A magnet system configured on the cutter head assembly and the support portion for providing a magnetic attraction force that prevents the cutter head assembly and the support portion from moving apart to the disengaged state.

Further, the cutter head assembly includes a magnet mounting plate, and the magnet system includes magnets arranged in the magnet mounting plate for providing the magnetic attraction force. The cutter head assembly is fixed on the support part through the magnet system, which is convenient for installation and disassembly.

Further, the cooling element is provided with a power supply interface, and the support part is provided with a conductive member electrically connected to the power supply interface.

The technical scheme of the present invention provides a cutter head assembly, which includes a cooling element with a cooling surface and a heat dissipation surface, the cooling surface is in contact with the cutting unit for heat transfer, and the cooling element is located on the shaving head and connected with the cutting unit, which can reduce the The heat conduction loss between the cooling element and the skin area to be cooled can effectively ensure the cooling effect. At the same time, the cooling element and the cutting unit move synchronously. During the shaving process, the cooling element is always in contact with the user's skin. The cooling effect is not affected when the head support part or the grip part is floating, and at the same time, the heat cooled relative to the ambient temperature is accurately transferred to the part where the user is in contact with the cutting unit, and the temperature rise of the grip part can reduce the Risk of reduced life of electrical components in the grip.

Description of drawings

The above and other features and advantages of the present disclosure, and the manner of obtaining them, will become more apparent, and the disclosure itself will be better understood, by reference to the following description of non-limiting embodiments of the present disclosure taken in conjunction with the accompanying drawings, in:

1 is a schematic diagram of a cutter head assembly provided by an embodiment of the present invention;

Fig. 2 is a bottom view of the cutter head assembly provided by the embodiment of the present invention;

Fig. 3 is a sectional view of the cutter head assembly shown in Fig. 2 along A-A;

Fig. 4 is a schematic diagram of the cooling element in the cutter head assembly;

Fig. 5 is an exploded view of the cutter head assembly provided by the embodiment of the present invention;

Fig. 6 is the schematic diagram of the cutting unit in this cutter head assembly;

Fig. 7 is a sectional view along B-B of the cutting unit shown in Fig. 6;

Fig. 8 is an enlarged view of part A of the cutting unit shown in Fig. 7;

Fig. 9 is a schematic diagram of the cutter head bracket in the cutter head assembly;

Fig. 10 is another schematic view of the cutter head bracket in the cutter head assembly;

Fig. 11 is a schematic diagram of the limit bracket in the cutter head assembly;

Fig. 12 is a schematic diagram of the magnet mounting plate in the cutter head assembly;

Fig. 13 is a schematic diagram of an electric shaver provided by an embodiment of the present invention;

Fig. 14 is an exploded view of the electric shaver provided by the embodiment of the present invention;

Figure 15 is a schematic diagram of a sealing plate in an electric shaver;

Fig. 16 is a sectional view of a sealing plate in an electric shaver;

Figure 17 is an exploded view of the sealing plate in the electric shaver;

Figure 18 is an exploded view of the transmission assembly in the electric shaver;

Fig. 19 is a schematic diagram of the connecting components in the electric shaver;

Wherein, each reference sign in the figure:

100-shaving head; 10-cutter head assembly; 11-cutter head bracket; 111-first installation cavity; 1111-first sub-installation cavity; 112-fourth matching part; 113-connecting column; 12-cutting unit; 121-knife head holder; 1211-the second installation cavity; 1212-the first matching part; 122-limiting bracket; 1221-the second matching part; 124-knife net; 13-cooling part; 131-cooling surface; 132-radiating surface; 133-power supply interface; 14-magnet mounting plate; 141-first magnet; 142-connection hole; 143-protrusion; Arm; 15-fastener; 20-sealing plate; 21-second magnet; 22-first conductive member; 221-first connecting part; 222-limiting part; 223-second connecting part; 23-second Conductive member; 24-third installation cavity; 241-small diameter chamber; 242-large diameter chamber; 25-seal; 251-second piercing hole; 26-fixing plate; 27-first piercing hole 30-transmission assembly; 31-gear mounting frame; 32-central gear; 33-planetary gear; 34-output shaft; 35-coupling; 351-transmission shaft; Three elastic parts; 36-bearing; 37-third conductive part; 38-first elastic part; 40-connection assembly; 41-fourth conductive part; 42-second elastic part; 43-connector; 44-support ; 50-shell; 200-grip.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore It should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , nor within the scope of the present invention.

In the following description, suffixes such as "module", "part", "component" or "unit" etc. are used only to facilitate the description of the present invention and have no specific meaning by themselves, so they can be mixedly used.

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

As shown in Figures 1-19, the present invention provides a cutter head assembly 10 configured to be used in an electric shaver to contact with human skin and reduce the thermal sensitivity of human skin, the cutter head assembly 10 includes a cutter head holder 11. The cutting unit 12 and the refrigeration unit 13. The cutter head bracket 11 is provided with a first installation cavity 111 for installing the cutting unit 12 through its upper and lower ends. The cutting unit 12 is installed in the first installation cavity 111 and exposed to the knife On the upper end of the head support 11, the installation cavity 111 can be divided into at least two first sub-installation cavities 1111, the number of the first sub-installation cavities 1111 is equal to the number of cutting units 12, and each first sub-installation cavity 1111 is used to install a cutting unit. Unit 12. The number of cutting units 12 may be three, and correspondingly, the number of first sub-installation cavities 1111 is also three. The cooling element 13 has a cooling surface 131 and a heat dissipation surface 132. The cutting unit 12 is in contact with the cooling surface 131 for heat transfer, and the cutter head support 11 is in contact with the heat dissipation surface 132 for heat transfer. At least part of the cooling element 13 moves synchronously with the cutting unit 12, so that During the shaving process, the cooling element 13 is always in contact with the user's skin, and does not affect the cooling effect when the cutting unit 12 floats relative to the shaving head support part or the grip part 200, and at the same time accurately transfers the cooled heat relative to the ambient temperature. The ground is conducted to the part where the user contacts the cutting unit 12.

In a preferred embodiment, the cutting unit 12 includes a cutter head frame 121, a blade assembly, and a limit bracket 122, wherein the blade assembly includes a blade 123 and a knife net 124, and the blade 123 is arranged in the knife net 124, and the blade assembly is worn and installed on the cutter head holder 121. The cutter head frame 121 is provided with a first matching portion 1212, and the limit bracket 122 is provided with a second matching portion 1221, and the second matching portion 1221 cooperates with the first matching portion 1212 to connect the limit bracket 122 to the cutter head frame 121 , the limit bracket 122 limits the blade assembly installed on the cutter head frame 121 so as to fix the blade assembly on the cutter head frame 121 . The first mating portion 1212 and the second mating portion 1221 can be snap-connected, one of the first mating portion 1212 and the second mating portion 1221 is a buckle, the other is a slot, and the first mating portion 1212 Multiple second matching parts 1221 can be provided.

One end of the limiting bracket 122 is connected to the tool head frame 121 , and the other end of the limiting bracket 122 is connected to the tool bit bracket 11 . Specifically, the limit bracket 122 is provided with a third matching portion 1222, the cutter head bracket 11 is provided with a fourth matching portion 112, and the fourth matching portion 112 cooperates with the third matching portion 1222 to install the cutting unit 12 on the first Install cavity 111. The third matching portion 1222 and the fourth matching portion 112 can be snap-fit connection, one of the third matching portion 1222 and the fourth matching portion 112 is a buckle, the other is a slot, and the third matching portion 1222 There can be multiple sets of the fourth matching portion 112 .

In a preferred embodiment, in order to make the cutting unit 12 fit the skin better, the fourth fitting part 112 is cylindrical, and each first sub-installation cavity 1111 is provided with two fourth fitting parts 112, and the two The axes of the four fourth matching parts 112 are located on the same straight line L, the number of the third matching parts 1222 is equal to that of the fourth matching parts 112 and correspondingly arranged, and the two sides of the limit bracket 122 pass through the two third matching parts 1222 and the fourth matching part 122 respectively. The matching part 112 is connected in the first sub-installation cavity 1111, so that the limit bracket 122 can rotate around the straight line L passing through the axis of the two fourth matching parts 112 in the first sub-installation cavity 1111, and then drive the cutting The unit 12 can rotate in the first installation cavity 111 of the cutter head holder 11 .

In a preferred embodiment, the cutter head holder 121 and the cutter head holder 11 are heat-conducting materials, the cooling element 13 transfers the heat cooled relative to the ambient temperature to the user through the cutter head holder 121, and the cooling member 13 passes through the cutter head holder 11 To dissipate the heat heated relative to the ambient temperature to the environment, the thermally conductive material can be metal, or other conductive materials such as graphite. Thermal conductive silicone grease is provided between the cooling element 13 and the cutter head support 11 and/or the cutter head holder 121 to improve cooling and/or heat dissipation efficiency. The limit bracket 122 is a heat insulating material, and the limit bracket 122 made of a heat insulating material is used to movably connect the cutter head frame 121 to the cutter head holder 11, so as to avoid the generation of heat heated relative to the environment in the cooling element 13 from the knife The head holder 11 conducts to the cutter head holder 121 , and at the same time prevents heat generated in the cooling element 13 from being cooled relative to the environment from being transferred from the cutter head holder 121 to the cutter head holder 11 , resulting in poor cooling effect. The limiting bracket 122 is elastically deformable heat-insulating plastic.

In a preferred embodiment, the cutter head frame 121 is provided with a second installation cavity 1211 , and the cooling element 13 is embedded in the second installation cavity 1211 and can move with the rotation of the cutting unit 12 . The cooling element 13 can move relative to the cutter head support 11. During the relative movement of the cooling member 13 on the cutter head support 11, at least part of the cooling surface 132 is always connected with the cutter head support 11 to ensure normal heat dissipation. The cooling element 13 may have a height H, the second installation cavity 1211 has a depth h, and the cutter head assembly satisfies the condition H>h, that is, the height of the cooling element 13 is greater than the depth h of the second installation cavity 1211 so as to partially expose the second installation cavity 1211 and The cutter head support 11 is in contact with each other. At this time, the cutter head holder 121 and the cutter head holder 11 are separated by the part of the cooling element 13 that exposes the second installation cavity 1211, so as to avoid the direct contact between the cutter head holder 121 and the cutter head support 11, thereby avoiding the cooling of the cooling element. The heat generated in 13 that is heated relative to the environment is conducted from the cutter head holder 11 to the cutter head holder 121 . The refrigeration element 13 may have an inner diameter r, the first installation cavity 111 may have an inner diameter R, and the cutter head assembly satisfies the condition R>r. When this condition is satisfied, when the cutting unit 12 is installed in the first installation cavity 111, the cutting unit 12 and the cooling The inner wall of the part 13 is in contact, the cutting unit 12 and the cutter head support 111 are separated by the cooling part 13, the cutting unit 12 is not in direct contact with the cutter head support 11, so as to avoid the heat generated in the cooling part 13 from being heated relative to the environment from the cutter head support 11 is transmitted to the cutter head frame 121. In this embodiment, the second installation cavity 1211 is a stepped inner cavity, the upper part of which is smaller and the lower part is larger. The frame 121 is in close contact, the inner wall of the heat dissipation surface 132 has a gap I with the cutter head frame 121, the outer wall of the heat dissipation surface 132 has a gap S with the cutter head frame 121, the cutter head support 11 and the cutter head frame 121 are always separated, and the heat dissipation surface 132 There is a gap between the tool head frame 121 without direct contact, so as to prevent the heat generated in the cooling element 13 from being heated relative to the environment from the tool bit bracket 11 to the tool head frame 121, and to avoid the cooling of the cooling element 13 relative to the environment The heat from the cutter head frame 121 is conducted to the cutter head holder 11, resulting in poor cooling effect.

In a preferred embodiment, a heat insulating layer is provided on the cutter head support 11 and/or the cutting unit 12 to block heat conduction between the cutter head support 11 and the cutting unit 12 . The heat insulating layer can be a heat insulating coating, which is disposed on the surface of the cutting unit 11 adjacent to the cutting unit 12 , or disposed on the surface of the cutting unit 12 adjacent to the cutting unit 11 . The heat insulation layer can also be a heat insulator installed between the cutter head support 11 and the cutting unit 12 , so as to prevent the heat generated in the cooling member 13 from being heated relative to the environment from being conducted from the cutter head support 11 to the cutting unit 12 .

In a preferred embodiment, the cooling element 13 includes at least two, and every two adjacent cooling elements 13 are spaced apart from each other, which can isolate the heat conduction between each adjacent two cooling elements 13, so as to ensure the cooling effect . Preferably, the number of cooling elements 13 is equal to the number of cutting units 12, and each cutting unit 12 is provided with a cooling element 13. During the shaving process, no matter which cutting unit 12 is in contact with the user's skin, the cooling element 13 can provide Cooling effect. Preferably, three cutting units 12 are provided, and the number of cooling elements 13 is also three.

Another object of the present invention is to provide an electric shaver, including a handle 200 and a shaver head 100 mounted on the handle 200, the electric shaver includes the above-mentioned cutter head assembly 10, and the shaver head 100 It also includes a supporting part, the supporting part includes a sealing plate 20, a transmission assembly 30, a connecting assembly 40 and a housing 50, and the cutter head assembly 10 and the supporting part have a connected state and a separated state. In the connected state, the cutter head assembly 10 and the support part are connected to each other for the operation of the cutting unit 12; to clean the cutting unit 12. A magnet system, configured on the cutter head assembly 10 and the support, is used to provide a magnetic attraction force that prevents the cutter head assembly 10 and the support from moving apart to a disengaged state. In a preferred embodiment, the cutter head assembly 10 includes a magnet mounting plate 14, and the magnet system includes a first magnet 141 arranged in the magnet mounting plate 14 and a second magnet 21 on the sealing plate 20 for providing magnetic attraction. force. The second magnet 21 is arranged corresponding to the first magnet 141 , and the cutter head assembly 10 is magnetically fixed on the support part through the cooperation of the first magnet 141 and the second magnet 21 , which is convenient for installation and disassembly. The first magnet 141 and the second magnet 21 can be one or more. The magnet mounting plate 14 can be formed by one injection molding with the cutter head support 11 , or the magnet mounting plate 14 and the first magnet 141 can be formed by secondary injection molding, and then the magnet mounting plate 14 with the first magnet 141 installed is connected to the cutter head support 11 .

Specifically, the cutter head bracket 11 is provided with a connecting column 113, and the magnet mounting plate 14 is provided with a connecting hole 142, and the fastener 15 passes through the connecting hole 142 and cooperates with the connecting column 113 so that the magnet mounting plate 14 is fixed on the cutter head bracket. 11, the fastener 15 can be a screw. For convenience, the magnet mounting plate 14 is fixed on the cutter head support 11, the magnet mounting plate 14 can be provided with a protrusion 143, and the cutter head support 11 is correspondingly provided with a buckle slot 114, and the rotating magnet mounting plate 14 makes the protrusion 143 enter the buckle The slot 114 is thus used to connect the magnet mounting plate 14 to the cutter head support 11 , and then use the fastener 15 to lock it. There can be three buckling slots 114 , which are evenly spaced on the cutter head support 11 , and the protrusions 143 are correspondingly arranged on the magnet mounting plate 14 . The first magnet 141 can be disposed in the middle of the magnet mounting plate 14 , and correspondingly, the second magnet 21 can be disposed in the middle of the sealing plate 20 .

In a preferred embodiment, the magnet mounting plate 14 is in a "Y" shape, and the magnet mounting plate 14 is provided with three connecting arms 144, and the angle between any two adjacent connecting arms is 120°. The first magnet There are three 141, which are respectively arranged on the three connecting arms 144, that is, each connecting arm 144 is provided with a first magnet 141, so that the magnetic attraction force is evenly distributed. One of the first magnet 141 and the second magnet 21 is a magnet, and the other is a substance that can be attracted by a magnet.

In a preferred embodiment, the cooling element 13 is provided with a power supply interface 133 , and the supporting part is provided with a conductive member (not shown) electrically connected to the power supply interface 133 . One end of the conductive member is electrically connected to the power supply component, and the other end is connected to the power supply interface 133 so that the power supply component supplies power to the refrigeration unit 13 . Specifically, the conductive member includes a first conductive member 22 and a second conductive member 23 installed on the sealing plate 20, the sealing plate 20 is provided with a third installation cavity 24 passing through its upper and lower ends, and the first conductive member 22 is slidably connected to the In the third installation cavity 24, the upper end of the first conductive member 22 is electrically connected to the power supply interface 133, and the lower end of the first conductive member 22 is connected to the second conductive member 23. The second conductive member 23 is an elastic member, and the second conductive member 23 is also located at the first Three are installed in the cavity 24 and elastically abut against the first conductive member 22 . When the cooling element 13 rotates in the first installation cavity 111 with the cutting unit 12, a pressure is applied to the first conductive element 22, and the first conductive element 22 will float away from the cutter head assembly 10, because the second conductive element 23 As an elastic part, the second conductive part 23 will deform in the floating direction, that is, the size in the floating direction will shrink, and provide a restoring force to the first conductive part 22. After the cooling part 13 removes the applied pressure, the first The conductive member 22 resets under the action of the second conductive member 23 , thereby ensuring that the first conductive member 22 can always be in close contact with the power supply interface 133 . The first conductive part 22 is preferably a spring pin, so that when the first conductive part 22 itself is subjected to the pressure exerted by the cooling part 13, it will be displaced in the floating direction and reset when the extrusion of the cooling part 13 is cancelled; The conductive member 23 is preferably a coil spring.

In a preferred embodiment, the third installation cavity 24 is provided with a stepped inner cavity, and the stepped inner cavity is composed of a small-diameter chamber 241 at the upper end and a large-diameter chamber 242 at the lower end, and the diameter of the small-diameter chamber 241 is smaller than the large diameter chamber. The diameter of the chamber 242, the first conductive member 22 includes a first connecting part 221, a limiting part 222 and a second connecting part 223, the first connecting part 221 is slidably connected in the small diameter chamber 241, the diameter of the limiting part 222 The diameter is larger than the diameter of the small-diameter chamber 241 , thereby restricting the first conductive member 22 from sliding completely into the small-diameter chamber 241 . The shape of the small-diameter chamber 241 matches the first connecting part 221, so as to prevent the position of the first conductive part 22 from shifting or deforming itself after floating for many times, and at the same time prevent dust or dregs from entering the support part, ensuring that the first conductive part 22 can always be in close contact with the cooling element 13 . The second conductive member 23 is sleeved on the second connecting portion 223 of the first conductive member 22, one end of the second conductive member 23 is against the limiting portion 222, the second conductive member 23, the second connecting portion 223 and the limiting portion 222 are all arranged in the large-diameter chamber 242 to prevent the second conductive member 23 from slipping relative to the first conductive member 22 , and provide a stable restoring force for the first conductive member 22 all the time. When the shaving head 100 floats relative to the grip part 200 , the power supply component can continuously and stably supply power to the cooling element 13 .

The transmission assembly 30 is arranged in the inner cavity of the casing 50, the sealing plate 20 is sealed and installed at the opening of the casing 50, one end of the connecting assembly 40 is installed in the casing 50, and the other end protrudes from the inner cavity of the casing 50 and the handle 200 can be Disconnect the connection. The transmission assembly 30 includes a gear mounting frame 31 and a central gear 32 and a planetary gear 33 installed on the gear mounting frame 31. A bearing 36 is arranged between the central gear 32 and the gear mounting frame 31. The transmission assembly 30 also includes an output shaft 34 and a coupling. The shaft coupling 35, the coupling 35 of the transmission assembly 30 is connected with the driving end of the driving mechanism in the grip part 200; the output power of the driving mechanism is transmitted to the blade 123 through the transmission assembly 30, thereby driving the blade 123 to rotate, and then realizing shaving operate. Specifically, the coupling 35 is connected with the sun gear 32 and then drives the planetary gear 33 to rotate, the output shaft 34 is connected with the planetary gear 33, a first elastic member 38 is arranged between the output shaft 34 and the planetary gear 33, and the output shaft 34 passes through The sealing plate 20 is in contact with the blade 123 to drive the blade 123 to rotate. Coupling 35 comprises connecting sleeve and transmission shaft 351, and connecting sleeve comprises mutual socket lower shell 354 and upper shell 352, and the third elastic member 353 is arranged between the two, and the lower shell 354 of connecting sleeve and the drive of electric shaver The devices are interlocked and matched to realize rotational cooperation. The transmission shaft 351 is sheathed on the upper shell 352 of the connecting sleeve, and the transmission shaft 351 drives the central gear 32 to rotate and cooperate.

The sealing plate 20 is provided with a first piercing hole 27 for the output shaft 34 to pass through and a seal 25 for sealing the first piercing hole 27, the seal 25 is provided with a second piercing hole 251, and the seal 25 The outer peripheral edge of the second piercing hole 27 is connected with the periphery of the first piercing hole 27; the output shaft 34 is connected with the blade 123 after passing through the second piercing hole 251; The sealing member 25 is fixed on the sealing plate 20 through the fixing member 26, and the fixing member 26 can also prevent the sealing member 25 from deforming and failing. The sealing plate 20 seals the transmission assembly 30 in the inner cavity of the housing 50, and at the same time, the sealing member 25 completely seals the installation gap between the output shaft 34 and the first through hole 27, so that the cutter head assembly 10 and the housing 50 The inner cavity is completely sealed and isolated to prevent dust or beard dregs from entering the support. Wherein, it should be noted that during the floating process of the cutting unit 12, the output shaft 34 will also move accordingly, therefore, the seal 25 will also deform along with the movement of the output shaft 34, so as to ensure the normal operation of the shaving head .

The sealing plate 20 is provided with a third conductive member 37 , the third conductive member 37 is mounted on the gear mounting frame 31 , and the third conductive member is electrically connected to the second conductive member 23 to electrically connect the power supply component and the refrigeration unit 13 . Specifically, the third conductive member 37 is a conductive sheet. The conductive sheet includes a positive conductive sheet and a negative conductive sheet. The positive electrode conductive sheet can be provided with a plurality of positive electrode interfaces, and the negative electrode conductive sheet can be provided with a plurality of negative electrode interfaces. The negative poles of both are connected to the positive conductive sheet. Specifically, the number of cooling elements 13 is three, and the number of first conductive elements 22 and second conductive elements 23 is six, wherein one end of three first conductive elements 22 and second conductive elements 23 is connected to the positive pole of cooling element 13, and the other One end is connected to the positive electrode conductive sheet, and one end of the other three first conductive elements 22 and second conductive elements 23 is connected to the negative electrode of the cooling element 13 , and the other end is connected to the negative electrode conductive sheet.

When the current direction is changed, the cooling surface 131 and the heat dissipation surface 132 of the refrigeration element 13 will change accordingly. According to actual needs, the cutting unit 12 can contact the heat dissipation surface 132 to transfer heat, and the cutter head support 11 can contact the cooling surface 131 to transfer heat, so as to provide users with Provide heat above ambient temperature. The connection assembly 40 includes a fourth conductive member 41, a second elastic member 42, a connector 43 and a support member 44, the connector 43 is used to cooperate with the handle 200 to detachably connect the handle 200 and the shaving head 100, support The part 44 can support the shaving head 100 to a certain extent, the second elastic part 42 can produce elastic deformation so that the shaving head 100 can float relative to the grip part 20, one end of the fourth conductive part 41 is electrically connected with the third conductive part 37, The other end is connected to the power supply part in the grip part 200 . The fourth conductive member 41 may be a conductive sheet, a conductive needle, a conductive spring or a combination thereof.

In a preferred embodiment, the shell 50 can be made of metal, and the shell 50 is connected to the cutter head holder 11, which can effectively increase the heat dissipation area, and better remove the heat generated by the cooling component from the skin contact area and transfer it to the environment. middle. The shell 50 and/or the cutter head support 11 is provided with a thermochromic coating, and the thermochromic coating causes the shell 20 and/or the mounting seat 11 to produce a color change perceivable by the user during the operation of the cooling element 13, so as to show the user Indicates the current working status of the cooling element 13. The cooling element 13 can be a semiconductor cooling element.

The technical solution of the present invention provides a cutter head assembly 10, which includes a cooling element 13 having a cooling surface 131 and a heat dissipation surface 132, the cooling surface 131 is in contact with the cutting unit 12 for heat transfer, and the cooling element 13 is located on the shaving head 100 And it is connected with the cutting unit 12, which can reduce the heat conduction loss between the cooling element 13 and the skin area to be cooled, and effectively ensure the cooling effect. At the same time, the cooling element 13 and the cutting unit 12 move synchronously. During the shaving process, the cooling element 13 Always in contact with the user's skin, when the cutting unit 12 floats relative to the support part or the grip part 200, the cooling effect is not affected, and at the same time, the heat cooled relative to the ambient temperature is accurately transferred to the part of the user in contact with the cutting unit 12 , and can reduce the risk of shortening the life of the electrical components installed in the grip portion 200 due to the temperature rise of the grip portion 200 .

In the description of this specification, reference is made to descriptions of the terms "one embodiment", "some embodiments", "an embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. It means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above content is a further detailed description of the present invention in conjunction with specific embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. Those of ordinary skill in the technical field to which the present invention belongs can also make some simple deduction or replacement without departing from the concept of the present invention.

Claims (10)

1. A cutter head assembly, characterized in that, comprising: The cutter head bracket is provided with a first installation cavity passing through its upper and lower ends; a cutting unit, installed in the first installation cavity and exposed to the upper end of the cutter head bracket; The refrigeration component has a cooling surface and a heat dissipation surface; Wherein, the cutting unit is in contact with the cooling surface to transfer heat, the cutter head support is in contact with the heat dissipation surface to transfer heat, and at least part of the cooling element moves synchronously with the cutting unit. 2. The cutter head assembly according to claim 1, at least part of the refrigerating element can move relative to the cutter head support, at least part of the heat dissipation surface is in contact with the cutter head support in the position of the cooling member. It is always connected during relative movement on the cutter head bracket. 3 . The cutter head assembly according to claim 1 , wherein the cutting unit comprises a cutter head holder, the cutter head holder is provided with a second installation cavity, and at least part of the cooling element is embedded in the second installation cavity. 4 . 4. The cutter head assembly according to claim 3, the cooling element has an inner diameter r, the first installation cavity has an inner diameter R, and the cutter head assembly satisfies R>r. 5. The cutter head assembly according to claim 3, the cutting unit further comprises a limit bracket for installing the cutting unit in the first installation cavity, one end of the limit bracket is connected to the cutter head frame, the The other end of the limit bracket is connected to the cutter head bracket. 6 . The cutter head assembly according to claim 1 , a heat insulating layer is provided on the cutter head support and/or the cutting unit for blocking heat conduction between the cutter head support and the cutting unit. 7 . 7 . The cutter head assembly according to claim 1 , wherein the refrigerating elements comprise at least two, and every adjacent two of the refrigerating elements are spaced apart from each other. 8. An electric shaver, comprising a handle and a shaving head mounted on the handle, characterized in that: the shaving head includes the cutter head assembly according to any one of claims 1-6 , the shaving head also includes a support portion, the cutter head assembly and the support portion have: a connected state in which the cutter head assembly and the support portion are connected to each other for operation of the cutting unit; and a disengaged state in which the cutter head assembly and the support part are separated from each other for removing the cutter head assembly from the support part to clean the cutting unit; A magnet system configured on the cutter head assembly and the support portion for providing a magnetic attraction force that prevents the cutter head assembly and the support portion from moving apart to the disengaged state. 9. The electric shaver of claim 8, said head assembly comprising a magnet mounting plate, said magnet system comprising magnets disposed in said magnet mounting plate for providing said magnetic attraction force. 10. The electric shaver according to claim 8, the cooling element is provided with a power supply interface, and the supporting part is provided with a conductive piece electrically connected to the power supply interface.

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