Multifunctional milk mixing device integrating shaking and keeping warm

Abstract

The present application relates to a kind of multifunctional milk mixing device of integration of shaking and keeping warm, it includes base, middle shell being installed on base, setting in the inside of middle shell above base, rotating drum, motor and transmission mechanism being installed in base, drive rotating drum to rotate, heating device is installed in the space between the outer bottom surface of rotating drum and base, and hollow part is opened on rotating drum, for hot airflow to flow into the inside of rotating drum.The present application adopts the above structure, the function of milk mixing device only having shaking function and milk warmer only being able to keep warm is combined together, realizes integrated structure, greatly reduces the occupied space of product, brings convenience to user;And fundamentally change heating and keeping warm mode, adopt waterless keeping warm mode, directly adopt air internal circulation mode of conducting heat, also increase ultraviolet sterilization function, can keep internal space clean, prevent pollution, can also improve heat utilization efficiency, energy saving and high efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of maternal and child products and small household appliances, in particular to a multifunctional milk mixing device with uniform shaking and heat preservation. BACKGROUND

[0002] The feeding of milk powder for infants requires careful preparation by adults, both in terms of water temperature and uniformity of the milk powder during melting, and without air bubbles, otherwise it can cause discomfort to the infant. At the same time, infants should be fed on demand and in a timely manner, with short intervals and long feeding times, which can cause the milk to cool down during feeding and require heat preservation measures.

[0003] For milk preservation, there are various heat preservation devices on the market for preserving milk, most of which use electrically heated water to heat the milk bottle, which has the disadvantage that water can easily produce dirt and bacteria, which can easily adhere to the milk bottle, causing unhygienic conditions, and the water needs to be changed frequently, and the internal cleaning is not convenient;

[0004] For uniform shaking of milk powder, there are also special milk mixers (milk powder shakers) on the market, which use a rotating drum driven by an electric motor to rotate the milk bottle inside the rotating drum, causing the milk in the milk bottle to move in a vortex shape to achieve uniform shaking and reduce air bubbles. In existing such milk mixers, the transmission mechanism driving the rotating drum also bears the weight of the rotating drum and the milk bottle, so it often needs to be matched with a large-torque motor and a reduction box, which is high in cost and easy to wear, with a short service life.

[0005] Obviously, the two functions of heating and heat preservation and uniform shaking require two completely different devices to achieve, which is not only high in cost for ordinary consumers, but also occupies a large space and is not convenient to use, and can only be used at home, without portability. SUMMARY

[0006] The purpose of the present application is to overcome the above-mentioned shortcomings of the prior art and provide a multifunctional milk mixing device with uniform shaking and heat preservation.

[0007] The technical solution adopted by the present application is: a multifunctional milk mixing device with uniform shaking and heat preservation, comprising a base, a middle housing mounted on the base, a rotating drum arranged inside the middle housing above the base, a motor and a transmission mechanism mounted in the base to drive the rotating drum to rotate, a heating device mounted in the space between the outer bottom surface of the rotating drum and the base, and a hollow part provided on the rotating drum for hot air to flow into the interior of the rotating drum.

[0008] Specifically, the base comprises a bottom shell, a mounting bottom plate mounted on the bottom shell, an installation space formed between the lower surface of the mounting bottom plate and the bottom surface of the bottom shell, the motor and the transmission mechanism being mounted on the lower surface of the mounting bottom plate in the installation space, the output end of the transmission mechanism penetrating the upper surface of the middle part of the mounting bottom plate and being connected with the rotating drum, an annular protruding part being formed in the middle part of the mounting bottom plate, a load bearing bearing being mounted in the annular protruding part, a connecting part being formed in the bottom center of the rotating drum and protruding downward and penetrating the middle part of the load bearing bearing, the connecting part being in transmission connection with the output end of the transmission mechanism, the heating device being mounted on the upper surface of the mounting bottom plate and the periphery of the annular protruding part, the bottom center of the rotating drum being in contact with the load bearing bearing, and the rotating drum being suspended above the heating device.

[0009] Further, a ventilation opening is arranged below the heating device on the mounting bottom plate, a fan is mounted on the lower surface of the mounting bottom plate at the ventilation opening, and a raised wind blocking ring is formed around the heating device at the peripheral edge of the mounting bottom plate.

[0010] Further, the heating device comprises a thin film type heating sheet, a metal heat dissipation sheet arranged on the upper surface of the thin film type heating sheet, and a heat insulation sheet arranged on the lower surface of the thin film type heating sheet, and the thin film type heating sheet, the metal heat dissipation sheet and the heat insulation sheet all have a circular ring shape.

[0011] Further, the thin film type heating sheet is a PI heating film, the metal heat dissipation sheet is an aluminum alloy heat dissipation sheet, and the heat insulation sheet is made of bakelite or other heat insulation materials.

[0012] Further, the middle shell has an inner-outer double-layer structure, comprising an inner layer wall in the shape of a cylinder and an outer layer wall in the shape of a circular truncated cone, the upper end surfaces of the inner layer wall and the outer layer wall being connected as a whole to form a hollow layer, the lower end surface of the inner layer wall being fixedly connected with the mounting bottom plate and located outside the wind blocking ring, and the lower end surface of the outer layer wall being in abutment assembly with the upper end surface of the bottom shell, a control circuit board being mounted in the hollow layer, and a limiting part for mounting the control circuit board being arranged between the hollow layer and the bottom shell.

[0013] Further, a key part corresponding to the keys on the control circuit board and a display hole are arranged on the outer layer wall, and a key indication film is attached to the outer surface, so that the keys on the control circuit board can be controlled by pressing the key part on the outer layer wall; a first battery and a first charging port are further mounted on the lower surface of the mounting bottom plate, and the control circuit board is electrically connected with the fan, the first battery, the heating device, the motor and the first charging port through wires.

[0014] Further, the milk mixing device further comprises a cover body which is detachably assembled with the upper end surface of the middle shell.

[0015] Further, the cover body comprises a middle cover body detachably assembled with the middle shell, an upper cover body detachably assembled with the middle cover body, and a sterilization lamp assembly arranged on the top of the upper cover body; the top surface of the upper cover body is provided with an assembly groove assembled with the sterilization lamp assembly; the assembly groove is provided with a light hole and a plurality of buckle holes; the sterilization lamp assembly comprises a lamp shell, a circuit board arranged in the lamp shell, a second battery connected with the circuit board, a sterilization LED lamp, and a second charging port; the lower surface of the lamp shell is provided with an LED lamp hole communicated with the light hole on the top of the upper cover body; the LED lamp radiates sterilization from the LED lamp hole and the light hole towards the inside of the cover body; and the second charging port is exposed from the lower surface of the protruding end of the lamp shell.

[0016] Further, a ring-shaped silica gel ring and a locking ring are further arranged on the upper end surface of the middle shell; the silica gel ring is provided with a plurality of elastic tentacles protruding inward; at least one of the elastic tentacles is provided with a temperature sensor connected with the control circuit board; and a stainless steel heat conduction sleeve is arranged around the elastic tentacle provided with the temperature sensor.

[0017] The multifunctional milk mixer has the advantages that: the milk mixer with only the shaking function and the milk warmer with only the warming function are combined together to realize the integrated structure, the occupying space of the finished product is greatly reduced, and the user is facilitated; the heating and warming mode is fundamentally changed, the waterless warming mode is adopted, the air internal circulation mode is directly adopted to conduct heat, the ultraviolet sterilization function is further added, the internal space is kept clean and pollution is prevented, the heat utilization efficiency is improved, and energy is saved; the bearing of the shaking function of the rotating drum is borne by the bearing shaft and the mounting bottom plate, the motor and the transmission mechanism are not pressed, the low-cost motor and the speed reducer are adopted, the overall cost is low, the material and mold costs of the product are saved by more than 50% compared with the production of two split milk mixers and milk warmers, the overall service life is longer, and the performance is more stable; and the product is powered by the rechargeable battery, the product has better portability, and is convenient to carry and use when going out. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall perspective view of the multifunctional milk mixer;

[0019] Figure 2 is the exploded view of the multifunctional milk mixer;

[0020] Figure 3 、 Figure 4 is the local exploded view of the mounting bottom plate and the rotating drum part at different angles in the multifunctional milk mixer;

[0021] Figure 5 、Figure 6 is a different angle structure diagram of the middle shell and the base in the present application;

[0022] Figure 7 is another angle diagram of the middle shell in the present application;

[0023] Figure 8 is a partial structure diagram of the cover in the present application;

[0024] Figure 9 is a structure diagram of the cover in the present application;

[0025] Figure 10 is an exploded structure diagram of the sterilization lamp assembly in the present application. DETAILED DESCRIPTION

[0026] As Figures 1-4 shown, the present application is a kind of shake evenly and keep warm integrated multifunctional milk frother, it includes base 1, install in the middle shell 2 of base 1, setting in the middle shell 2 inside of base 1 above the rotating drum 3, the motor 31 and transmission mechanism 32 of driving rotating drum 3 rotation are installed in base 1, in the space between the outer bottom surface of rotating drum 3 and base 1, heating device 4 is installed, and hollow part 30 for hot airflow to flow into the inside of rotating drum 3 is opened in rotating drum 3.In this embodiment, the bottom surface of rotating drum 3 is opened with the hollow part 30 for the hot airflow generated when the heating device 4 below it works to pass, so that the bottom of rotating drum 3 forms a "cross" bracket to support the milk bottle.

[0027] Specifically, in combination with Figures 2-4As shown, the base 1 comprises a bottom shell 11, a mounting bottom plate 12 mounted on the bottom shell 11, and an installation space 100 formed between the lower surface of the mounting bottom plate 12 and the bottom surface of the bottom shell 11. The motor 31 and the transmission mechanism 32 are mounted on the lower surface of the mounting bottom plate 12 in the installation space 100. In this embodiment, the motor 31 and the transmission mechanism 32 are integrated into a horizontal motor and a speed reducer. The output end of the speed reducer is perpendicular to the motor shaft and extends upward through the middle part of the mounting bottom plate 12. The output end of the transmission mechanism 32 extends through the upper surface of the middle part of the mounting bottom plate 12 and is connected to the rotating drum 3 to drive the rotating drum 3 to rotate. An annular protruding part 121 is formed in the middle part of the mounting bottom plate 12. A load bearing bearing 33 is mounted in the annular protruding part 121. Correspondingly, the bottom center of the rotating drum 3 is in contact with the moving ring of the load bearing bearing 33. A connecting part 34 protruding downward is formed in the bottom center of the rotating drum 3 and extends into the middle part of the load bearing bearing 33. The connecting part 34 is in transmission connection with the output end of the transmission mechanism 32. Through the load bearing bearing 33, the weight of the rotating drum 3 and the milk bottle is concentrated on the load bearing bearing 33 and the mounting bottom plate 12. The output end of the motor 31 and the transmission mechanism 32 is not subjected to the pressure. In this way, a small-torque motor and transmission mechanism can be used to drive the rotating drum to rotate flexibly. The cost of the motor and the speed reducer can be saved. The wear and tear is reduced. The service life is prolonged. The heating device 4 is mounted on the upper surface of the mounting bottom plate 12 and around the annular protruding part 121. The bottom center of the rotating drum 3 is in contact with the load bearing bearing 33. The rotating drum 3 is suspended above the heating device 4. When the heating device 4 works, the heating makes the air warm. The warm air enters the inside of the rotating drum 3 from the hollow part 30 at the bottom of the rotating drum 3. The warm air exchanges heat with the milk bottles to heat and keep warm the milk bottles and the milk.

[0028] Further, as shown in Figure 3 , Figure 4 , a ventilation opening 122 is arranged below the heating device 4 on the mounting bottom plate 12. A fan 5 is mounted on the lower surface of the mounting bottom plate 12 at the ventilation opening 122. The fan 5 blows air upward through the ventilation opening 122. The heat generated by the heating device 4 heats the air to enter the inside of the rotating drum 3 upward. The heated air returns to below the mounting bottom plate 12 of the base 1 from the gap between the rotating drum 3 and the inner wall of the middle shell 2. The fan 5 circulates the air to the heating device 4 and the rotating drum 3 upward. In this way, the heat loss and waste of the heating device 4 are reduced. The efficiency is improved. The energy-saving effect is achieved. The parts on the mounting bottom plate 12 and the lower surface thereof are maintained at a normal working temperature. A raised wind-blocking ring 123 is formed around the heating device 4 at the peripheral edge of the mounting bottom plate 12. The hot air blown by the fan 5 passes through the hollow part 30 of the rotating drum 3 upward into the inside of the rotating drum 3 to exchange heat with the milk bottles. The heat utilization efficiency is further improved.

[0029] In this embodiment, Figure 3 As shown, the heating device 4 includes a thin film heating sheet 41, a metal heat sink 42 arranged on the upper surface of the thin film heating sheet 41, and a heat insulation sheet 43 arranged on the lower surface of the thin film heating sheet 41, and the thin film heating sheet 41, the metal heat sink 42, and the heat insulation sheet 43 are all in a circular ring shape. Furthermore, the thin film heating sheet 41 is a PI heating film, and the metal heat sink 42 is an aluminum alloy heat sink; the heat insulation sheet 43 is made of heat insulating materials such as bakelite, and the two sides of the PI heating film are made of materials with different thermal conductivity coefficients. The aluminum alloy heat sink has fast heat conduction and can promote heat exchange between heat and air, so that the air heats up quickly. The heat insulation sheet 43 can reduce the heat dissipation toward the lower installation base plate and increase the upward radiation of heat, thereby improving thermal efficiency; the thin film heating device has the advantages of small size, small space occupation and high heating efficiency.

[0030] Combine Figure 5 、 Figure 6 、 Figure 7 As shown, the middle shell 2 has an inner and outer double-layer structure, including a cylindrical inner wall 21 and a truncated cone-shaped outer wall 22. The inner wall 21 and the outer wall 22 are connected as a whole at the upper end face, forming a hollow layer in the middle. The lower end face of the inner wall 21 is fixedly connected to the mounting base 12 and is located outside the wind shield ring 123, and the lower end face of the outer wall 22 is assembled with the upper end face of the bottom shell 11; a control circuit board 6 is installed in the hollow layer, and a limiting portion 23 for installing the control circuit board 6 is provided between the hollow layers and on the bottom shell 11. After assembly, the components on the control circuit board 6 are directly inserted into the limiting portion 23 of the hollow layer.

[0031] Furthermore, the outer wall 22 is provided with a button portion 221 and a display hole 222 corresponding to the buttons on the control circuit board 6, and a button indicator film 223 is attached to the outer surface. That is, by pressing the button portion 221 on the outer wall 22, the buttons on the control circuit board 6 can be manipulated to achieve control functions, including power on / off, mode selection, temperature setting, etc.; the real-time temperature indicated by the LED display screen on the control circuit board 6 can be displayed through the display hole 222. The lower surface of the mounting base 12 is also mounted with a first battery 61 and a first charging port 62. The control circuit board 6 is electrically connected to the fan 5, the first battery 61 (a rechargeable lithium battery is used in this embodiment), the heating device 4, the motor 31, and the first charging port 62 via wires.

[0032] Further, a ring-shaped silica gel ring 24 and a locking ring 25 are mounted on the upper end surface of the middle shell 2. The silica gel ring 24 is made of heat-conducting silica gel material, and the flexible silica gel ring 24 is fixed by the locking ring 25. The silica gel ring 24 has two inwardly protruding elastic tentacles 241, at least one of which is provided with a temperature sensor 242 connected to the control circuit board 6. The temperature sensor 242 is a thermistor, and the elastic tentacle 241 with the temperature sensor 242 is surrounded by a stainless steel heat-conducting sleeve 243 to increase the heat conduction efficiency and improve the accuracy and real-time performance of temperature measurement. A plurality of inwardly downwardly curved elastic clamps 35 are uniformly arranged on the inner wall of the rotating drum 3. The uniformly arranged elastic clamps 35 can position the milk bottle, so that the milk bottle is located in the axial direction of the rotating drum 3, so as to rotate concentrically and coaxially, reduce unnecessary vibration, and be suitable for different sizes of milk bottles. The inwardly protruding elastic tentacles 241 of the silica gel ring 24 with good heat conductivity can keep in contact with the milk bottle and accurately conduct the heat of the milk bottle in time, so that the temperature sensor 242 can detect the temperature of the milk bottle in real time, even when the rotating drum 3 rotates. The temperature of the milk bottle can be sensed in real time, so as to stop heating, temperature keeping and fan operation when the required set temperature is reached, thereby achieving energy saving effect, or to start heating function and fan operation in time when the set temperature is lower, thereby realizing temperature keeping function.

[0033] Further, the milk regulator further comprises a cover 7 which is detachably assembled with the upper end surface of the middle shell 2. The cover 7 can form a sealed environment inside the milk regulator, which can keep the inside clean and prevent dust, and can reduce noise during operation, and can form internal air circulation to prevent heat loss and improve heating and temperature keeping efficiency.

[0034] Further, the milk regulator further comprises a cover 7 which is detachably assembled with the upper end surface of the middle shell 2. The cover 7 can form a sealed environment inside the milk regulator, which can keep the inside clean and prevent dust, and can reduce noise during operation, and can form internal air circulation to prevent heat loss and improve heating and temperature keeping efficiency. Figure 8 Figure 9 Figure 10 ​​As shown, the cover 7 comprises a middle cover 71 detachably assembled with the middle shell 2, an upper cover 72 detachably assembled with the middle cover 71, and a sterilization lamp assembly 8 arranged at the top of the upper cover 72. The top surface of the upper cover 72 is provided with an assembly groove 721 assembled with the sterilization lamp assembly 8, and a light passing hole 722 and a plurality of connecting holes 723 are arranged at the assembly groove 721. The sterilization lamp assembly 8 is connected with the sterilization lamp assembly 8 through screws by the connecting holes 723. The sterilization lamp assembly 8 comprises an upper and lower assembled lamp housing 81, a circuit board 82 arranged in the lamp housing 81, a second battery 83 (a rechargeable lithium battery in the embodiment) connected with the circuit board 82, a sterilization LED lamp 84, and a second charging port 85. The circuit board 82 is further connected with a lamp switch 821. The lower surface of the lamp housing 81 is provided with an LED lamp hole 811 communicating with the light passing hole 722 at the top of the upper cover 72, and the sterilization LED lamp 84 radiates sterilization to the inside of the cover 7 through the LED lamp hole 811 and the light passing hole 722. One end of the lamp housing 81 protrudes from the side wall of the upper cover 72, and the second charging port 85 is exposed from the lower surface of the protruding part. The sterilization lamp assembly 8 can sterilize and disinfect the inside of the feeding bottle and the milk regulator when working, further keep the feeding bottle in a clean environment, keep the milk temperature and cleanliness, and provide protection for the health of infants and young children. The second battery 83 can be independently charged through the second charging port 85. Meanwhile, the sterilization lamp assembly 8 can also be used as a handle of the upper cover 72, which is convenient for the user to open the cover 7 to take out or put in the feeding bottle. The cover 7 adopts a circular table-shaped split structure, which is beneficial to reduce the space occupied by packaging and save costs.

[0035] Of course, in the embodiment, part of the gaps are arranged on the wind shield ring, the middle shell, the flexible rubber ring and other components according to needs for wire arrangement. The middle shell, the middle cover and the upper cover are detachably assembled by the annular groove structure, and the sealing structure can be arranged at the joint according to needs. These are conventional measures and will not be described here.

[0036] In summary, the milk warmer with the above structure combines the functions of the milk mixer with only the shaking function and the milk warmer with only the warming function, realizes the integrated structure, greatly reduces the occupied space of the product finished product, and brings convenience to the user; and fundamentally changes the heating and warming mode, adopts the waterless warming mode, directly adopts the air internal circulation mode to conduct heat, and also increases the ultraviolet sterilization function, which can keep the internal space clean and prevent pollution, and also improve the heat utilization efficiency, energy saving and high efficiency. Furthermore, in the milk warmer, the bearing of the shaking function rotating drum is borne by the bearing shaft and the mounting bottom plate, the motor and the transmission mechanism are not under pressure, a low-cost motor and a reduction box can be used to realize it, the overall cost is low, compared with producing two separate milk mixers and milk warmers, the product of the present application can save more than 50% of the material and mold cost, and the overall service life is longer and the performance is more stable. In addition, the product of the present application uses a rechargeable lithium battery for power supply, so that the product has better portability and is convenient to carry and use when going out.

[0037] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the present application, but the present application is not limited thereto. Those skilled in the art can make various modifications and improvements without departing from the spirit and essence of the present application, and these modifications and improvements are also considered to be within the protection scope of the present application.

Claims

1. A multifunctional milk mixer with integrated shaking and heat preservation, characterized by: It includes a base, a middle shell installed on the base, a rotating drum arranged inside the middle shell above the base, a motor and a transmission mechanism installed in the base to drive the rotating drum to rotate, a heating device installed in the space between the outer bottom surface of the rotating drum and the base, and a hollow part provided on the rotating drum to allow hot air to flow into the inside of the rotating drum; The base includes a bottom shell and a mounting bottom plate installed on the bottom shell, an installation space is formed between the lower surface of the mounting bottom plate and the bottom surface of the bottom shell, the motor and the transmission mechanism are installed in the installation space on the lower surface of the mounting bottom plate, the output end of the transmission mechanism penetrates the upper surface of the middle part of the mounting bottom plate and is connected with the rotating drum, an annular protruding part is formed in the middle part of the mounting bottom plate, a bearing is installed in the annular protruding part, a connecting part protruding downward and penetrating the middle part of the bearing is formed in the center of the bottom of the rotating drum, the connecting part is in transmission connection with the output end of the transmission mechanism, the heating device is installed on the upper surface of the mounting bottom plate and the periphery of the annular protruding part, the center of the bottom of the rotating drum is in contact with the bearing, and the rotating drum is suspended above the heating device; A ventilation opening is further arranged on the mounting bottom plate below the heating device, and a fan is installed on the lower surface of the mounting bottom plate at the ventilation opening; The heating device includes a thin film heating sheet, a metal heat dissipation sheet arranged on the upper surface of the thin film heating sheet, and a heat insulation sheet arranged on the lower surface of the thin film heating sheet.

2. The multi-functional milk warmer of claim 1, wherein: A raised windproof ring is further formed on the peripheral edge of the mounting bottom plate and the periphery of the heating device.

3. The multi-functional milk warmer of claim 1 or 2, wherein: The thin film heating sheet, the metal heat dissipation sheet, and the heat insulation sheet are all in the shape of a ring.

4. The multi-functional milk warmer of claim 3, wherein: The thin film heating sheet is a PI heating film, the metal heat dissipation sheet is an aluminum alloy heat dissipation sheet, and the heat insulation sheet is made of bakelite.

5. The multi-functional milk warmer of claim 1, wherein: The middle shell has a double-layer structure and includes an inner layer wall in the shape of a cylinder and an outer layer wall in the shape of a circular truncated cone, the upper end surfaces of the inner layer wall and the outer layer wall are connected as a whole to form a hollow layer, the lower end surface of the inner layer wall is fixedly connected with the mounting bottom plate and located outside the windproof ring, and the lower end surface of the outer layer wall is in abutment assembly with the upper end surface of the bottom shell, a control circuit board is installed in the hollow layer, and a limiting part for installing the control circuit board is arranged between the hollow layer and the bottom shell.

6. The multi-functional milk warmer with shaking and keeping warm integration according to claim 1, characterized in that: A key part corresponding to the keys on the control circuit board and a display hole are further arranged on the outer layer wall of the middle shell, and a key indicating film is attached to the outer surface, the lower surface of the mounting bottom plate is further provided with a first battery and a first charging port, and the control circuit board is electrically connected with the fan, the first battery, the heating device, the motor, and the first charging port through wires.

7. The multi-functional milk warmer with shaking and keeping warm integration according to claim 1, characterized in that: A ring-shaped silica gel ring and a locking ring are further installed on the upper end surface of the middle shell, the silica gel ring has a plurality of elastic tentacles protruding inward, at least one of the elastic tentacles is provided with a temperature sensor connected with the control circuit board, and a stainless steel heat conduction sleeve is sleeved on the periphery of the elastic tentacle with the temperature sensor, and a plurality of elastic clamping pieces bending inward and downward are uniformly arranged on the inner wall of the rotating drum.

8. The multi-functional milk warmer of claim 1 or 7, wherein: The milk warmer further includes a cover body detachably assembled with the upper end surface of the middle shell.

9. The multi-functional milk warmer of claim 8, wherein: The cover body comprises a middle cover body detachably assembled with the middle shell, an upper cover body detachably assembled with the middle cover body, and a sterilization lamp assembly arranged at the top of the upper cover body; the top surface of the upper cover body is provided with an assembly groove detachably assembled with the sterilization lamp assembly; a light transmission hole and a plurality of buckle holes are arranged at the assembly groove; the sterilization lamp assembly comprises a lamp shell, a circuit board arranged in the lamp shell, a second battery connected with the circuit board, a sterilization LED lamp, and a second charging port; the lower surface of the lamp shell is provided with an LED lamp hole communicated with the light transmission hole at the top of the upper cover body; the LED lamp radiates sterilization from the LED lamp hole and the light transmission hole towards the inside of the cover body; one end of the lamp shell protrudes from the side wall of the upper cover body; and the second charging port is exposed from the lower surface of the protruding part of the end.

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