Toothpaste squeezing type electric toothbrush

Abstract

The utility model relates to the field of cleaning appliances, in particular to a toothpaste squeezing type electric toothbrush which comprises a brush handle and a brush cylinder, the brush handle is detachably installed at the upper end of the brush cylinder, bristles are arranged at one end of the brush handle, a connecting hole is formed in the other end of the brush handle, the bristles extend out of one end of the connecting hole, and a first one-way valve is arranged at the end, close to the bristles, of the connecting hole. The brush handle is further provided with a pressing pump, the pressing pump is inserted into the connecting hole, a second one-way valve is formed at one end of the pressing pump, the pressing pump is of a hollow structure, and a third one-way valve is arranged in the pressing pump. The inner portion of the pressing pump faces outwards to form a protrusion serving as a pressing block for pressing, the handle face, close to the pressing block, of the brush handle is provided with a pressing opening, an operator can supplement toothpaste in the toothpaste cavity, feeding can be completed by using conventional toothpaste on the market, and a customized toothpaste box assembly does not need to be additionally purchased for replacement.

Description

Technical Field

[0001] This utility model relates to the field of cleaning tools, and in particular to an electric toothbrush that dispenses toothpaste. Background Technology

[0002] Toothbrushes and toothpaste, as daily oral hygiene products, have a long history of development and are full of innovation. Electric toothbrushes, in particular, are increasingly integrating smart technologies such as Bluetooth connectivity, pressure sensing, and timers to improve cleaning efficiency and promote good brushing habits.

[0003] Chinese utility model patent discloses an electric toothbrush with built-in toothpaste (authorization announcement number: CN221998072U). The electric toothbrush with built-in toothpaste consists of three parts: the toothbrush body assembly, the toothpaste box assembly, and the toothbrush head assembly. Before the electric toothbrush starts working, the toothpaste is already contained in the toothpaste box assembly. When the toothpaste in the toothpaste box assembly is used up, the toothpaste box assembly can be easily disassembled and discarded, and another toothpaste box assembly can be installed. The modular design makes the electric toothbrush easy to reuse.

[0004] However, in actual use, toothpaste boxes are for single use only and cannot be reused, resulting in a waste of consumables. Consumers also need to purchase spare toothpaste box components to continue using the toothbrush. Summary of the Invention

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] An electric toothbrush with a toothpaste-squeezing mechanism includes a handle and a brush barrel. The handle is detachably mounted on the upper end of the brush barrel. The upper end of the handle is provided with bristles. The interior of the handle is hollow, forming a connecting hole. The connecting hole extends to the bristles, and a first one-way valve is provided near the bristles. The one-way output end of the first one-way valve faces the bristles. The brush barrel is provided with a material chamber, and a piston is provided inside the material chamber. The bottom of the brush barrel is provided with an exhaust hole communicating with the material chamber. The opening of the material chamber near one end of the handle communicates with the connecting hole to form a communicating area.

[0007] The brush handle is also equipped with a pressing pump, which is inserted into the connecting hole. One end of the pressing pump is formed as a second one-way valve. The pressing pump has an internal hollow structure. The pressing pump is equipped with a third one-way valve, which is embedded in the pressing pump. The one-way output end of the third one-way valve faces the brush bristles. The inside of the pressing pump protrudes outward to form a pressing block. The brush handle has a pressing port on the handle surface near the pressing block to expose the pressing block.

[0008] As a preferred embodiment of this utility model: the upper end of the brush tube is provided with a fastening port, the lower end of the fastening port is connected to the material chamber, the lower end of the press pump is detachably connected to the fastening port so that the lower end of the third one-way valve is connected to the fastening port, and the fastening port is provided with an internal thread for fastening the toothpaste outlet when toothpaste is replenished to the material chamber.

[0009] As a preferred embodiment of this utility model: the press pump includes a housing and a flow guide. The housing is inserted into the connecting hole, forming two chambers inside the brush handle. The housing has a hollow structure. The second one-way valve is located at the upper end of the housing. The pressing block is located on the side of the housing near the pressing port. The flow guide is detachably installed inside the housing. A first through hole is opened inside the flow guide. The end of the first through hole near the brush bristles abuts against the second one-way valve. A pressure hole is opened on the cylindrical surface of the flow guide near the pressing block for connecting to the pressing block. A third one-way valve is detachably installed at the first through hole. The one-way output end of the third one-way valve faces the brush bristles. The lower end of the flow guide is detachably connected to the fastening port, so that the first through hole connects to the fastening port.

[0010] As a preferred embodiment of this utility model: the brush cylinder includes a storage column, a shell and a base. The storage column is inserted into the shell, the material cavity is disposed in the storage column, the fastening port is embedded in the upper end of the shell, and the base is movably connected to one end of the shell so that the upper end face of the base abuts against the opening of the material cavity.

[0011] As a preferred embodiment of this utility model: the storage column is further provided with a display strip on the cylindrical surface located in the material cavity. The display strip is a transparent strip used to display the amount of toothpaste stored in the material cavity. The cylindrical surface of the outer shell is provided with a display groove for installing the display strip. The display strip is detachably inserted into the display groove.

[0012] As a preferred embodiment of this utility model: the base includes a soft rubber component and a bottom cover, the soft rubber component is detachably installed inside the bottom cover, the bottom cover is connected to the end of the outer shell away from the fastening port by a rotating buckle, the upper end face of the soft rubber component abuts against the opening of the material cavity, and the vent hole is disposed inside the soft rubber component.

[0013] As a preferred embodiment of this utility model: the bottom cover has a locking block inside, the soft rubber part has a locking groove corresponding to the locking block, the soft rubber part is locked in the locking groove by the locking block so that the soft rubber part is installed inside the bottom cover, and the bottom of the soft rubber part has anti-slip texture to increase friction.

[0014] As a preferred embodiment of this utility model: the storage column is further provided with a vibration assembly, the vibration assembly including a vibration motor, a circuit board and a battery, the vibration motor is electrically connected to the circuit board, the circuit board is used to control the vibration of the vibration motor, the battery is electrically connected to the vibration motor to provide power, the battery is electrically connected to a control board, and the control board controls the power supply of the battery to the vibration motor.

[0015] As a preferred embodiment of this utility model: the brush handle is further provided with a protective sleeve, the lower outer edge of the brush handle is chamfered, the lower opening of the protective sleeve is provided with a flange facing inward, and the flange engages with the chamfer to fix the protective sleeve on the brush handle.

[0016] As a preferred embodiment of this utility model: the brush handle is further provided with a screwing block, and at least two sets of screwing blocks are installed at the lower end of the brush handle.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. By setting up a passage connecting to the bristles inside the electric toothbrush, and installing a sleeve and guide inside the handle, pressing the pressing block creates negative pressure inside the handle, thereby driving the piston inside the brush barrel, which is under atmospheric pressure, to move upward and push the toothpaste to the bristles. At the same time, the toothpaste in the feeding chamber can be replenished. Regular toothpaste on the market can be used to complete the feeding, without the need to purchase a custom toothpaste box component for replacement.

[0019] 2. By setting the first one-way valve and the second one-way valve, the internal sealing of the brush handle can be guaranteed, which plays a double waterproof role. When toothpaste is delivered to the bristles, the second one-way valve can control the toothpaste feeding, and then output it to the bristles through the first one-way valve. This can control the amount of toothpaste fed, which can save materials and be environmentally friendly.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a cross-sectional view of the brush handle of this utility model.

[0023] Figure 2This is a schematic diagram of the locking groove structure of this utility model.

[0024] Figure 3 This is a schematic diagram of the brush handle explosion of this utility model.

[0025] Figure 4 This is an exploded cross-sectional view of the brush handle of this utility model.

[0026] Figure 5 This is a cross-sectional view of the brush cylinder of this utility model.

[0027] Figure 6 This is a schematic diagram of the fastening port of this utility model.

[0028] Figure 7 This is a schematic diagram of the brush tube explosion of this utility model.

[0029] Figure 8 This is a schematic diagram of the display strip structure of this utility model.

[0030] Figure 9 This is a schematic diagram of the storage column structure of this utility model.

[0031] Figure 10 This is a schematic diagram of the guide slider structure of this utility model.

[0032] Figure 11 This is a schematic diagram of the bottom cover structure of this utility model.

[0033] Figure 12 This is a cross-sectional view of the soft rubber part of this utility model.

[0034] Figure 13 This is an exploded schematic diagram of the base of this utility model.

[0035] Figure 14 This is a schematic diagram of the bottom cover structure of this utility model.

[0036] Figure 15 This is a schematic diagram of the protective sleeve structure of this utility model.

[0037] Figure 16 This is the utility model Figure 15 A magnified view of a portion of point A in the middle.

[0038] In the diagram: 1-Brush handle, 2-Brush barrel, 11-Brush bristles, 12-Connecting hole, 13-First one-way valve, 15-Protective sleeve, 151-Flange, 14-Pressing port, 16-Turning block, 21-Material chamber, 22-Piston, 23-Exhaust port, 24-Pressing pump, 241-Shell, 242-Flow guide, 2421-First through hole, 2422-Pressure hole, 2411-Second one-way valve, 2423-Third one-way valve, 2424-Locking groove, 2412-Pressing block, 25-Fasting port, 251-Internal thread, 26-Storage column 261-Display bar, 262-Vibration motor, 263-Circuit board, 264-Battery, 265-Guide slider, 27-Outer shell, 271-Display slot, 272-Guide slot, 28-Base, 281-Soft rubber part, 282-Bottom cover, 2821-Card block, 2811-Card slot, 2812-Anti-slip texture, 31-First buckle hole, 32-First protrusion, 33-First buckle groove, 34-First snap-fit ​​block, 35-Male buckle, 36-Female buckle, 37-Second buckle groove, 38-Second snap-fit ​​block, 39-Second buckle hole.

[0039] Detailed implementation method.

[0040] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] Please see Figures 1-5 In this embodiment of the present invention, a toothpaste-squeezing electric toothbrush includes a handle 1 and a brush barrel 2. The handle 1 is detachably mounted on the upper end of the brush barrel 2. The upper outer end of the handle 1 is provided with bristles 11, and the interior of the handle 1 is hollow, forming a connecting hole 12. The connecting hole 12 extends to the bristles 11, and a first one-way valve 13 is provided near the bristles 11, with the one-way output end of the first one-way valve 13 facing the bristles 11. The brush barrel 2 has a material chamber 21 for storing toothpaste, and a piston 22 is provided inside the material chamber 21. An exhaust hole 23 is provided at the bottom of the brush barrel 2, connecting to the material chamber 21. The end of the material chamber 21 near the handle 1 opens and connects to the connecting hole 12, forming a communicating area.

[0042] The brush handle 1 is equipped with a pressing pump 24, which is inserted into the connecting hole 12. One end of the pressing pump 24 is formed as a second one-way valve 2411. The pressing pump 24 has an internal hollow structure. The pressing pump 24 is equipped with a third one-way valve 2423, which is embedded in the pressing pump 24. The one-way output end of the third one-way valve 2423 faces the brush bristles 11. The inside of the pressing pump 24 protrudes outward to form a pressing block 2412 for pressing. The brush handle 1 has a pressing port 14 near the handle surface of the pressing block 2412 to expose the pressing block 2412.

[0043] The working principle of this embodiment is as follows: The operator presses the pressing block 2412, causing the air in the connecting hole 12 to be compressed and then discharged through the second one-way valve 2411 and the first one-way valve 13, thus creating a negative pressure inside the brush handle 1. Since the connecting hole 12 is connected to the material chamber 12, a negative pressure is also created in the material chamber 2. Under these conditions, the piston 22 moves towards the bristles 11, thus pushing the toothpaste in the material chamber 2 to the bristle end. After a period of use, the piston 22 moves to the upper end of the material chamber 21, at which point the toothpaste in the material chamber 21 is used up. The operator can purchase commercially available toothpaste to replenish the material chamber 21 by aligning the toothpaste nozzle with the material chamber 21 and squeezing the toothpaste into the material chamber 21. The piston 22, located in the material chamber 21, moves downwards due to the toothpaste feed, causing the air at the lower end of the piston 22 to be discharged from the exhaust hole 23. When the piston 22 moves to the lower end of the material chamber 21 under the push of the toothpaste feed, the feeding of the material chamber 21 is completed.

[0044] In one embodiment of this utility model, the brush handle 1 is a hard rubber part. A soft rubber tube (not shown in the figure) can be installed in the connecting hole 12 inside the brush handle 1. One end of the soft rubber tube (not shown in the figure) is sleeved around the output end of the second one-way valve 2411, so that toothpaste can be output from the second one-way valve 2411 into the soft rubber tube (not shown in the figure). The other end of the soft rubber tube (not shown in the figure) extends to the bristles 11, so that toothpaste can be squeezed from the soft rubber tube (not shown in the figure) into the bristles 11. Then, the first one-way valve 13 is installed at the other end of the soft rubber tube (not shown in the figure), which can play a role in waterproofing and preventing toothpaste backflow. The connecting hole 12 can be used to install the soft rubber part so that toothpaste can be delivered to the bristles 11. The soft rubber part can play a good sealing role to prevent toothpaste leakage.

[0045] In another embodiment of this utility model, the connecting hole 13 can also be directly used as a toothpaste delivery channel. The operator presses the pressing block 2412 to generate negative pressure inside the brush handle 1. The material chamber 21 located in the brush cylinder 2 is affected by the negative pressure and drives the piston 22 to move towards the bristles 11, thereby pushing the toothpaste. The toothpaste is delivered from the third one-way valve 2423 to the second one-way valve 2411, and then from the second one-way valve 2411 to the connecting hole 12. The toothpaste can be delivered to the bristles 11 through the connecting hole.

[0046] Furthermore, such as Figures 5-7 As shown in the embodiment of this utility model, a fastening port 25 is provided at the upper end of the brush tube 2. The lower end of the fastening port 25 is connected to the material chamber 21. The lower end of the press pump 24 is detachably connected to the fastening port 25 so that the lower end of the third one-way valve 2423 is connected to the fastening port 25. The fastening port 25 is provided with an internal thread 251 for fastening the toothpaste outlet when toothpaste is replenished to the material chamber 21.

[0047] The working principle of this embodiment is as follows: When replenishing the material chamber 21, the toothpaste outlet can be connected by a thread, so that the toothpaste can be locked and fixed in the brush tube 2 by the thread, which makes it convenient for the operator to squeeze the toothpaste. On the other hand, it can prevent the material chamber 21 from loosening and the toothpaste outlet when the operator squeezes the toothpaste, thus preventing the toothpaste from leaking out.

[0048] Furthermore, such as Figures 1-4 As shown in the embodiment of this utility model, the press pump 24 includes a housing 241 and a flow guide 242. The housing 241 is inserted into the connecting hole 12, forming two chambers inside the brush handle 1. The interior of the housing 241 is hollow. A second one-way valve 2411 is disposed at the upper end of the housing 241. The pressing block 2412 is disposed on the side of the housing 241 near the pressing port 14. The flow guide 242 is detachably installed inside the housing 241, and a first through hole 24 is formed inside the flow guide 242. 21. The first through hole 2421 near the bristles 11 abuts against the second one-way valve 2411. The flow guide 242 near the cylindrical surface of the pressing block 2412 has a pressure hole 2422 for connecting the pressing block 2412. The third one-way valve 2423 is detachably installed at the first through hole 2421. The one-way output end of the third one-way valve 2423 faces the bristles 11. The lower end of the flow guide 242 is detachably connected to the fastening port 25 so that the first through hole 2421 connects to the fastening port 25.

[0049] Specifically, the housing 241 is made of soft rubber, ensuring a good seal when installed inside the brush handle. The guide component 242 can be made of a rigid material, and its production methods include, but are not limited to, injection molding or machining. During installation, the guide component 242 and housing 241 can be connected using, but are not limited to, snap-fit ​​connections and threaded connections. The third check valve 2423 is made of soft rubber, ensuring a good seal when installed on the guide component 242.

[0050] The connection methods between the third check valve and the flow guide include, but are not limited to, the following:

[0051] like Figure 1As shown, the third check valve 2423 is installed at the end of the first through hole 2421 away from the bristles 11. A snap-fit ​​block can be provided at the lower end of the first through hole 2421 to snap the third check valve 2423.

[0052] like Figure 2 As shown, a locking groove 2424 can be formed at the end face of the first through hole 2421 near the pressing block 2412. The lower end of the third one-way valve 2423 is inserted into the locking groove 2424. When the operator squeezes the pressing block 2412, the air in the area from the third one-way valve 2423 to the second one-way valve 2411 is discharged from the output port of the second one-way valve 2411, creating a negative pressure. The installation of the third one-way valve 2423 and the first through hole 2421 can be achieved by interference fit.

[0053] The working principle of this embodiment: The connection between the housing 241 and the guide component 242 includes, but is not limited to, a snap-fit ​​connection, such as... Figure 3 As shown, a first snap-fit ​​hole 31 is provided at the lower end of the housing 241, and a first protrusion 32 is provided at the lower end of the guide member 242. When the guide member 242 is inserted into the housing 241, the first protrusion 32 is precisely engaged in the first snap-fit ​​hole 31, thereby completing the installation of the guide member 242. Furthermore, a second snap-fit ​​hole 39 is provided at the lower end of the brush handle 1. When the housing 241 is installed and inserted into the brush handle 1, the first protrusion 32 is engaged in the second snap-fit ​​hole 39, thereby completing the installation of the housing 241.

[0054] In another embodiment of this utility model, when the brush handle 1 is installed on the brush cylinder 2, the installation method between the brush handle 1 and the brush cylinder 2 includes, but is not limited to, threaded connection and snap-fit ​​connection. Figures 3-6 As shown, at least two first snap-fit ​​slots 33 are provided at the upper end of the brush barrel 2, and a first snap-fit ​​block 34 corresponding to the first snap-fit ​​slots 33 is provided at the lower end of the brush handle 1. During installation, the operator rotates the snap-fit ​​to make the first snap-fit ​​block 34 snap into the first snap-fit ​​slot 33, thereby completing the installation of the brush handle 1 and the brush barrel 2. At the same time, the lower end of the guide member 242 is inserted into the fastening port 25. The material of the fastening port 25 inside the brush barrel 2 can be made of soft rubber. The fit between the lower end of the guide member 242 and the fastening port 25 can be an interference fit to ensure sealing and prevent toothpaste leakage.

[0055] Furthermore, such as Figures 5-14 As shown in the embodiment of this utility model, the brush cylinder 2 includes a storage column 26, a housing 27, and a base 28. The storage column 26 is inserted into the housing 27, the material cavity 21 is disposed within the storage column 26, the fastening port 25 is embedded in the upper end of the housing 27, and the base 28 is movably connected to one end of the housing 27 such that the upper end face of the base 28 abuts against the opening of the material cavity 21. When the storage column 26 is installed inside the housing 27, the material cavity 21 is connected to the fastening port 25.

[0056] Furthermore, such as Figures 8-9 As shown in this embodiment of the present invention, the storage column 26 is further provided with a display strip 261 on the cylindrical surface located in the filling chamber 21. The display strip 261 is a transparent strip used to display the amount of toothpaste stored in the filling chamber 21. The cylindrical surface of the outer shell 27 is provided with a display groove 271 for installing the display strip 261. The display strip 261 is detachably inserted into the display groove 271. The right end of the display strip 261 is provided with a male buckle 35, and the right end of the outer shell 27 is provided with a female buckle 36 communicating with the display groove 271. The display strip 261 is inserted into the display groove 271 so that the male buckle 35 is engaged with the female buckle 36.

[0057] The display strip 261 can also be connected to the housing 27 by setting a sliding groove and a slider, such as... Figure 10 As shown, a guide groove 272 is provided on the cylindrical surface of the outer casing 27, and corresponding guide sliders 265 are provided on both sides of the display strip 261. The display strip 261 is mounted on the outer casing 27 by inserting the guide sliders 265 into the guide groove 272.

[0058] Furthermore, such as Figures 7-14 As shown in the embodiment of this utility model, the base 28 includes a soft rubber part 281 and a bottom cover 282. The soft rubber part 281 is detachably installed inside the bottom cover 282. The bottom cover 282 is connected to the end of the outer shell 27 away from the fastening port 25 by a rotating buckle. The upper end face of the soft rubber part 281 abuts against the opening of the material cavity 21. The vent 23 is provided inside the soft rubber part 281.

[0059] Specifically, the bottom cover 282 has at least two second snap-fit ​​grooves 37 at its lower end, and the inner wall of the brush tube 2 has a second snap-fit ​​block 38 corresponding to the second snap-fit ​​grooves 37. When the brush tube 2 is installed at the lower end of the bottom cover 282, the second snap-fit ​​block 38 is engaged in the second snap-fit ​​grooves 37 so that the brush tube 2 is locked at the lower end of the bottom cover 282.

[0060] Furthermore, such as Figures 7-14 As shown in the embodiment of this utility model, the bottom cover 282 is provided with a locking block 2821 inside, and the soft rubber part 281 is provided with a locking groove 2811 corresponding to the locking block 2821. The soft rubber part 281 is locked in the locking groove 2811 by the locking block 2821 so that the soft rubber part 281 is installed inside the bottom cover 282. The bottom of the soft rubber part 281 is provided with anti-slip texture 2812 to increase friction.

[0061] Furthermore, such as Figures 5-8As shown in the embodiment of this utility model, the storage column 26 is also provided with a vibration assembly. The vibration assembly includes a vibration motor 262, a circuit board 263, and a battery 264. The vibration motor 262 is electrically connected to the circuit board 263, which is used to control the vibration of the vibration motor 262. The battery 264 is electrically connected to the vibration motor 262 to provide power, and is also electrically connected to a control board, which controls the power supply from the battery 264 to the vibration motor 262.

[0062] The working principle of this embodiment is as follows: A button is provided on the wall of the brush cylinder 2. One end of the button is electrically connected to the circuit board 263 for signal transmission. When the button is pressed, the signal is transmitted to the circuit board 263, causing the circuit board 263 to start the vibration motor 262. The vibration motor 262 vibrates the brush cylinder 2, which in turn vibrates the brush handle 1 and the bristles 11. When the button is pressed again, the signal is transmitted to the circuit board 263, causing the circuit board 263 to control the vibration motor 262 to stop vibrating.

[0063] Furthermore, such as Figures 15-16 As shown in the embodiment of this utility model, the brush handle 1 is also provided with a protective sleeve 15. The lower outer edge of the brush handle 1 is chamfered, and the lower opening of the protective sleeve 15 is provided with a flange 151 facing inward. The flange 151 is engaged with the chamfer to fix the protective sleeve 15 on the brush handle 1.

[0064] Furthermore, such as Figure 3 and Figure 15 As shown in the embodiment of this utility model, the brush handle 1 is also provided with a screw block 16. At least two sets of screw blocks 16 are installed at the lower end of the brush handle 1. When the operator needs to refill the toothpaste, the brush handle 1 needs to be disassembled. The disassembly can be facilitated by grasping the screw blocks 16 at both ends, which plays a role in preventing slippage.

[0065] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A toothpaste-squeezing type electric toothbrush, comprising a handle (1) and a brush barrel (2), wherein the handle (1) is detachably mounted on the upper end of the brush barrel (2), characterized in that: The brush handle (1) has bristles (11) on the upper outer side. The brush handle (1) is hollow inside to form a connecting hole (12). The connecting hole (12) extends to the bristles (11), and a first one-way valve (13) is provided near the bristles (11). The one-way output end of the first one-way valve (13) faces the bristles (11). The brush cylinder (2) has a material chamber (21) inside. A piston (22) is provided inside the material chamber (21). The bottom of the brush cylinder (2) has an exhaust hole (23) that communicates with the material chamber (21). The opening of the material chamber (21) near one end of the brush handle (1) communicates with the connecting hole (12) to form a communicating area. The brush handle (1) is also provided with a pressing pump (24), which is inserted into the connecting hole (12). One end of the pressing pump (24) is formed as a second one-way valve (2411). The pressing pump (24) has an internal hollow structure. The pressing pump (24) is provided with a third one-way valve (2423), which is embedded in the pressing pump (24). The one-way output end of the third one-way valve (2423) faces the brush bristles (11). The inside of the pressing pump (24) protrudes outward to form a pressing block (2412). The brush handle (1) has a pressing port (14) on the handle surface near the pressing block (2412) to expose the pressing block (2412).

2. The electric toothbrush according to claim 1, characterized in that, The brush tube (2) has a fastening port (25) at its upper interior end. The lower end of the fastening port (25) is connected to the material chamber (21). The lower end of the press pump (24) is detachably connected to the fastening port (25) so that the lower end of the third one-way valve (2423) is connected to the fastening port (25). The fastening port (25) has an internal thread (251) for fastening the toothpaste outlet when the toothpaste is replenished to the material chamber (21).

3. The electric toothbrush according to claim 2, characterized in that, The press pump (24) includes a housing (241) and a flow guide (242). The housing (241) is inserted into the connecting hole (12) so that two chambers are formed inside the brush handle (1). The interior of the housing (241) is hollow. The second one-way valve (2411) is located at the upper end of the housing (241). The pressing block (2412) is located on the side of the housing (241) near the pressing port (14). The flow guide (242) is detachably installed inside the housing (241). A first through hole (2421) is opened inside the flow guide (242). One end of the through hole (2421) near the bristles (11) abuts against the second one-way valve (2411). The flow guide (242) has a pressure hole (2422) on its cylindrical surface near the pressing block (2412) for connecting the pressing block (2412). The third one-way valve (2423) is detachably installed at the first through hole (2421). The one-way output end of the third one-way valve (2423) faces the bristles (11). The lower end of the flow guide (242) is detachably connected to the fastening port (25) so that the first through hole (2421) connects to the fastening port (25).

4. The electric toothbrush according to claim 2, characterized in that, The brush cylinder (2) includes a storage column (26), a shell (27) and a base (28). The storage column (26) is inserted into the shell (27). The material cavity (21) is disposed in the storage column (26). The fastening port (25) is embedded in the upper end of the shell (27). The base (28) is movably connected to one end of the shell (27) so that the upper end of the base (28) abuts against the opening of the material cavity (21).

5. The electric toothbrush according to claim 4, characterized in that, The storage column (26) is provided with a display strip (261) on the cylindrical surface located in the material cavity (21). The display strip (261) is a transparent strip used to display the amount of toothpaste stored in the material cavity (21). The cylindrical surface of the outer shell (27) is provided with a display groove (271) for installing the display strip (261). The display strip (261) is detachably inserted into the display groove (271).

6. The electric toothbrush according to claim 4, characterized in that, The base (28) includes a soft rubber part (281) and a bottom cover (282). The soft rubber part (281) is detachably installed inside the bottom cover (282). The bottom cover (282) is connected to the end of the outer shell (27) away from the fastening port (25) by a rotating buckle. The upper end face of the soft rubber part (281) abuts against the opening of the material cavity (21). The vent hole (23) is disposed inside the soft rubber part (281).

7. The electric toothbrush according to claim 6, characterized in that, The bottom cover (282) has a locking block (2821) inside, and the soft rubber part (281) has a locking groove (2811) corresponding to the locking block (2821). The soft rubber part (281) is locked in the locking groove (2811) by the locking block (2821) so that the soft rubber part (281) is installed inside the bottom cover (282). The bottom of the soft rubber part (281) is provided with anti-slip texture (2812) to increase friction.

8. The electric toothbrush according to claim 4, characterized in that, The storage column (26) is also provided with a vibration assembly, which includes a vibration motor (262), a circuit board (263) and a battery (264). The vibration motor (262) is electrically connected to the circuit board (263), and the circuit board (263) is used to control the vibration of the vibration motor (262). The battery (264) is electrically connected to the vibration motor (262) to provide power. The battery (264) is electrically connected to a control board, and the control board controls the power supply of the battery (264) to the vibration motor (262).

9. The electric toothbrush according to claim 1, characterized in that, The brush handle (1) is also provided with a protective sleeve (15). The lower outer edge of the brush handle (1) is chamfered. The lower opening of the protective sleeve (15) is provided with a flange (151) facing inward. The flange (151) engages with the chamfer to fix the protective sleeve (15) on the brush handle (1).

10. The electric toothbrush according to claim 1, characterized in that, The brush handle (1) is also provided with a screwing block (16), and at least two sets of screwing blocks (16) are installed at the lower end of the brush handle (1).

Images