Toothpaste squeezing type electric toothbrush

Abstract

The invention 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 mounted 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. A protrusion is formed outwards in the pressing pump to serve as a pressing block for pressing, a pressing opening is formed in the handle face, close to the pressing block, of the brush handle, an operator can supplement toothpaste in the toothpaste cavity, feeding can be completed by using conventional toothpaste on the market, and a customized toothpaste assembly does not need to be additionally purchased for replacement.

Description

Technical Field

[0001] The invention relates to the field of cleaning appliances, in particular to an electric toothbrush that squeezes toothpaste. Background Art

[0002] Toothbrushes and toothpaste, as daily oral cleaning products, have a long and innovative development history, especially electric toothbrushes, which are increasingly integrated with smart technologies such as Bluetooth connectivity, pressure sensing and timers to improve cleaning efficiency and promote good brushing habits.

[0003] A Chinese invention patent discloses an electric toothbrush with built-in toothpaste (authorization announcement number: CN221998072U). The electric toothbrush with built-in toothpaste is divided into three parts: a toothbrush main body component, a toothpaste box component and a toothbrush head component. Before the electric toothpaste works, the toothpaste has been loaded in the toothpaste box component. When the toothpaste in the toothpaste box component is used up, the toothpaste box component can be easily disassembled and discarded, and another toothpaste box component can be installed. The modular design makes the electric toothbrush very easy to reuse.

[0004] However, in actual use, the toothpaste box is only used once and cannot be reused, resulting in a waste of consumables. Consumers need to purchase a spare toothpaste box assembly before they can continue to use the toothbrush. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] An electric toothbrush that squeezes toothpaste, comprising a brush handle and a brush barrel, wherein bristles are arranged on the outside of the upper end of the brush handle, the inside of the brush handle is hollow to form a connecting hole, the connecting hole extends to the bristles, and a first one-way valve is arranged near the bristles, the one-way output end of the first one-way valve faces the bristles, a material cavity is arranged in the brush barrel, a piston is arranged inside the material cavity, an exhaust hole connected to the material cavity is arranged at the bottom of the brush barrel, an opening of the material cavity near one end of the brush handle is connected to the connecting hole to form a connecting area, a pressing pump is arranged in the brush handle, and the pressing pump can be detachably installed in the brush handle for generating negative pressure in the connecting hole, thereby absorbing the paste in the material cavity and delivering it to the bristles.

[0007] As a preferred solution of the present invention: the pressing pump is inserted into the connecting hole, the pressing pump is an internal hollow structure, a second one-way valve is formed at one end of the pressing pump, the one-way output end of the second one-way valve faces the bristles, the pressing pump is provided with a third one-way valve, the third one-way valve is embedded in the pressing pump, the one-way output end of the third one-way valve faces the bristles, a protrusion is formed outwardly on the inside of the pressing pump as a pressing block for pressing, and a pressing opening is provided on the handle surface of the brush handle close to the pressing block for exposing the pressing block.

[0008] As a preferred solution of the present invention: a fastening port is provided at the inner upper end of the brush barrel, the fastening port is made of soft rubber, the lower end of the fastening port is connected to the material chamber, the lower end of the pressing 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 the toothpaste is added to the material chamber.

[0009] As a better solution of the present invention: the pressing pump includes a shell and a guide member, the shell is inserted in the connecting hole so that two chambers are formed inside the brush handle, the interior of the shell is a hollow structure, the second one-way valve is arranged at the upper end of the shell, the pressing block is arranged on the side of the shell close to the pressing port, the guide member is detachably installed in the shell, a first through hole is provided inside the guide member, one end of the first through hole close to the bristles presses against the second one-way valve, a pressure hole is provided on the cylindrical surface of the guide member close to the pressing block for connecting with the pressing block, the 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 bristles, and the lower end of the guide member is detachably connected to the fastening port so that the first through hole connects to the fastening port.

[0010] As a preferred solution of the present invention: the brush barrel includes a storage column, an outer shell and a base, the storage column is inserted into the inner part of the outer shell, the material cavity is arranged in the storage column, the fastening port is embedded in the upper end of the outer shell, and the base is movably connected to the lower end of the outer shell so that the upper end surface of the base abuts against the lower end opening of the material cavity.

[0011] As a preferred solution of the present invention: the storage column is also provided with a vibration assembly, and the vibration assembly includes a vibration motor, a circuit board and a battery. The vibration motor is electrically connected to the circuit board, and 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, and the battery is electrically connected to a control board, and the control board controls the battery's power supply to the vibration motor.

[0012] As a preferred solution of the present invention: 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 paste storage in the material cavity, and the cylindrical surface of the shell is provided with a display groove for installing the display strip.

[0013] As a preferred solution of the present invention: the base includes a soft rubber part and a bottom cover, the soft rubber part is detachably installed in the bottom cover, the bottom cover is connected to the end of the shell away from the fastening port through a rotating buckle, the upper end surface of the soft rubber part abuts against the opening of the material cavity, and the exhaust hole is arranged in the soft rubber part.

[0014] As a preferred solution of the present invention: a card block is provided inside the bottom cover, and the soft rubber component is provided with a card slot corresponding to the card block. The soft rubber component is clamped in the card slot through the card block so that the soft rubber component is installed inside the bottom cover, and the bottom of the soft rubber component is provided with anti-slip grooves to increase friction.

[0015] As a preferred solution of the present invention: the brush handle is also provided with a protective cover, the outer edge of the lower end of the brush handle is chamfered, the lower end opening of the protective cover is provided with a flange facing inward, the flange is clamped with the chamfer to fix the protective cover on the brush handle, the brush handle is also provided with a screw block, and at least two groups of screw blocks are installed at the lower end of the brush handle.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. A passage connected to the bristles is provided in the electric toothbrush, a sleeve and a guide are installed in the brush handle, and a negative pressure is generated inside the brush handle by pressing the pressing block, thereby driving the piston in the brush barrel at atmospheric pressure to move upward, thereby pushing the paste to the bristles, and at the same time, the paste in the material chamber can be replenished. The feeding can be completed using conventional toothpaste on the market, and there is no need to purchase customized toothpaste components for replacement.

[0018] 2. By setting the first one-way valve and the second one-way valve, the sealing inside the brush handle can be guaranteed, which plays a double waterproof role. When conveying the paste to the bristles, the second one-way valve can control the feeding of the paste, and then output it to the bristles through the first one-way valve, which can control the feeding amount of the paste, thereby saving materials and protecting the environment.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a cross-sectional view of a brush handle of the present invention.

[0022] Figure 2 It is a schematic diagram of the locking groove structure of the present invention.

[0023] Figure 3 It is a schematic diagram of the explosion of the brush handle of the present invention.

[0024] Figure 4 It is an exploded cross-sectional view of the brush handle of the present invention.

[0025] Figure 5 It is a cross-sectional view of a brush barrel of the present invention.

[0026] Figure 6 It is a schematic diagram of the fastening opening of the present invention.

[0027] Figure 7 It is a schematic diagram of the explosion of the brush barrel of the present invention.

[0028] Figure 8 It is a schematic diagram of the display bar structure of the present invention.

[0029] Fig. 9 It is a schematic diagram of the storage column structure of the present invention.

[0030] Fig.10 It is a structural schematic diagram of the guide slider of the present invention.

[0031] Fig.11 It is a schematic diagram of the bottom cover structure of the present invention.

[0032] Fig.12 It is a cross-sectional view of the soft rubber part of the present invention.

[0033] Fig.13 It is a schematic diagram of the explosion of the base of the present invention.

[0034] Fig.14 It is a schematic diagram of the bottom cover structure of the present invention.

[0035] Fig.15 It is a schematic diagram of the protective cover structure of the present invention.

[0036] Fig.16 The present invention Fig.15 A partial enlarged view of point A in the middle.

[0037] In the figure: 1-brush handle, 2-brush cylinder, 11-brush hair, 12-connecting hole, 13-first one-way valve, 15-protective cover, 151-flange, 14-pressing port, 16-screwing block, 21-material chamber, 22-piston, 23-exhaust hole, 24-pressing pump, 241-housing, 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-fastening port, 251-internal thread, 26-storage column , 261-display bar, 262-vibration motor, 263-circuit board, 264-battery, 265-guide slider, 27-housing, 271-display slot, 272-guide slot, 28-base, 281-soft rubber part, 282-bottom cover, 2821-card block, 2811-card slot, 2812-anti-slip pattern, 31-first card hole, 32-first protrusion, 33-first card slot, 34-first card block, 35-male buckle, 36-female buckle, 37-second card slot, 38-second card block, 39-second card hole. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 5 In an embodiment of the present invention, an electric toothbrush of extruded toothpaste type includes a brush handle 1 and a brush barrel 2, the brush handle 1 is detachably mounted on the upper end of the brush barrel 2, bristles 11 are arranged on the outer portion of the upper end of the brush handle 1, a connecting hole 12 is opened at the other end of the brush handle 1 to form an internal hollow structure of the brush handle 1, one end of the connecting hole 12 extends to the bristles 11 to form a passage, a first one-way valve 13 is arranged at one end of the connecting hole 12 close to the bristles 11, a one-way output end of the first one-way valve 13 faces the bristles 11, a material chamber 21 is arranged inside the brush barrel 2 for storing paste, a piston 22 is arranged inside the material chamber 21, an exhaust hole 23 is arranged at the bottom of the brush barrel 2 to communicate with the material chamber 21, the opening of the material chamber 21 close to one end of the brush handle 1 is connected to the connecting hole 12 to form a communicating area, the brush handle 1 is provided with a pressing pump 24, the pressing pump 24 is detachably mounted in the brush handle 1 to generate negative pressure in the connecting hole 12, thereby absorbing the paste in the material chamber 21 and delivering it to the bristles 11;

[0040] The pressing pump 24 is inserted into the connecting hole 12, and the pressing pump 24 is an internal hollow structure. A second one-way valve 2411 is formed at one end of the pressing pump 24. The pressing pump 24 is an internal hollow structure. The pressing pump 24 is provided with a third one-way valve 2423. The third one-way valve 2423 is embedded in the pressing pump 24, and the one-way output end of the third one-way valve 2423 faces the bristles 11. A protrusion is formed outwardly on the inside of the pressing pump 24 as a pressing block 2412 for pressing. A pressing port 14 is provided on the handle surface of the brush handle 1 close to the pressing block 2412 for exposing the pressing block 2412.

[0041] Working principle of this embodiment: The operator presses the pressing block 2412 so that the air in the connecting hole 12 is squeezed and passes through the second one-way valve 2411 and then passes through the first one-way valve 13 to discharge the brush handle 1, thereby forming a negative pressure inside the brush handle 1. Since the connecting hole 12 is connected to the material chamber 12, the material chamber 2 also forms a negative pressure. In this case, the piston 22 moves toward the bristles 11 to push the paste in the material chamber 2 to the end of the bristles 11. After a period of use, the piston 22 moves to the upper end of the material chamber 21, and the paste in the material chamber 21 is used up. The operator can buy commercially available toothpaste to refill the material chamber 21, align the toothpaste mouth with the material chamber 21, and squeeze the toothpaste so that the paste enters the material chamber 21. The piston 22 located in the material chamber 21 is pushed downward by the paste feeding, so that the air at the lower end of the piston 22 is discharged from the exhaust hole 23. When the piston 22 is pushed by the paste feed and moves to the lower end of the material chamber 21, the material feeding of the material chamber 21 is completed.

[0042] In one embodiment of the present invention, the brush handle 1 is a hard rubber part, and a soft rubber tube (not shown in the figure) can be arranged in the connecting hole 12 inside the brush handle 1. One end of the soft rubber tube (not shown in the figure) is sleeved on the output end of the second one-way valve 2411, so that the paste can be output from the second one-way valve 2411 to the soft rubber tube (not shown in the figure), and the other end of the soft rubber tube (not shown in the figure) extends to the bristles 11 so that the paste can be squeezed from the soft rubber tube (not shown in the figure) to 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) to prevent waterproofing and avoid backflow of the paste. The connecting hole 12 can be used to install the soft rubber part so that the paste can be transported to the bristles 11. The soft rubber part can have a good sealing effect to prevent leakage of the paste.

[0043] In another embodiment of the present invention, the connecting hole 13 can also be directly used as a conveying channel for the paste. The operator generates negative pressure inside the brush handle 1 by pressing the pressing block 2412. The material chamber 21 located in the brush tube 2 and at atmospheric pressure is affected by the negative pressure and drives the piston 22 to move toward the bristles 11, thereby pushing the paste. The paste is conveyed from the third one-way valve 24223 to the second one-way valve 2411, and then from the second one-way valve 2411 to the connecting hole 12. The paste can be conveyed to the bristles 11 through the connecting hole 12.

[0044] Furthermore, if Figures 5 to 7 As shown, in the embodiment of the present invention, a fastening opening 25 is provided at the inner upper end of the brush barrel 2, and the fastening opening 25 is made of soft rubber. The lower end of the fastening opening 25 is connected to the material chamber 21, and the lower end of the pressing pump 24 is detachably connected to the fastening opening 25 so that the lower end of the third one-way valve 2423 is connected to the fastening opening 25. The fastening opening 25 is provided with an internal thread 251 for fastening the toothpaste outlet when the toothpaste is replenished into the material chamber 21.

[0045] The working principle of this embodiment is as follows: when the material chamber 21 is being refilled, the toothpaste outlet can be connected via a threaded connection so that the paste can be fixed in the brush barrel 2 via threaded locking, which is convenient for the operator to squeeze the toothpaste. On the other hand, it can prevent the material chamber 21 and the toothpaste outlet from loosening when the operator is squeezing the toothpaste, thereby causing the paste to leak out.

[0046] Furthermore, if Figures 1 to 4 As shown, in the embodiment of the present invention, the pressing pump 24 includes a casing 241 and a flow guide 242. The casing 241 is inserted into the connecting hole 12 so that two chambers are formed inside the brush handle 1. The interior of the casing 241 is a hollow structure. The second one-way valve 2411 is arranged at the upper end of the casing 241. The pressing block 2412 is arranged on one side of the casing 241 close to the pressing port 14. The flow guide 242 is detachably installed in the casing 241. The interior of the flow guide 242 is provided with a first through hole 242. 1, one end of the first through hole 2421 close to the bristles 11 abuts against the second one-way valve 2411, a pressure hole 2422 is opened on the cylindrical surface of the guide member 242 close to the pressing block 2412 for connecting with 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, and the lower end of the guide member 242 is detachably connected to the fastening port 25 so that the first through hole 2421 is connected with the fastening port 25.

[0047] Specifically, the casing 241 is made of a soft rubber material, so that the casing 241 can achieve a good sealing effect when installed inside the brush handle. The guide member 242 can be made of a hard material. The production method of the guide member 242 includes but is not limited to injection molding or machining. When installing, the installation method between the guide member 242 and the casing 241 includes but is not limited to snap-on connection and threaded connection. The third one-way valve 2423 is made of a soft rubber material, and the third one-way valve 2423 can achieve a good sealing effect when installed on the guide member 242.

[0048] The connection methods between the third one-way valve 2423 and the flow guide 242 include but are not limited to the following methods:

[0049] like Figure 1As shown, the third one-way valve 2423 is installed at one end of the first through hole 2421 away from the bristles 11 , and a clamping block can be provided at the lower end of the first through hole 2421 to clamp the third one-way valve 2423 .

[0050] like Figure 2 As shown, a locking groove 2424 may be provided at the end surface of the first through hole 2421 close to the pressing block 2412, and 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 to form a negative pressure. The third one-way valve 2423 and the first through hole 2421 may be installed by interference fit.

[0051] In one embodiment of the present invention, the connection between the casing 241 and the guide member 242 includes but is not limited to connecting by setting a snap fitting, such as Figure 3 As shown, a first snap hole 31 is provided at the lower end of the sleeve 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 sleeve 241, the first protrusion 32 is just stuck in the first snap hole 31 to complete the installation of the guide member 242. Further, a second snap hole 39 is provided at the lower end of the brush handle 1. When the sleeve 241 is installed and inserted into the brush handle 1, the first protrusion 32 is stuck in the second snap hole 39 to complete the installation of the sleeve 241.

[0052] In another embodiment of the present invention, when the brush handle 1 is installed in the brush barrel 2, the installation method between the brush handle 1 and the brush barrel 2 includes but is not limited to threaded connection and snap-on connection. Figures 3 to 6 As shown, at least two first buckle grooves 33 are provided at the upper end of the brush barrel 2, and a first buckle block 34 corresponding to the first buckle groove 33 is provided at the lower end of the brush handle 1. During installation, the operator rotates the buckle to make the first buckle block 34 buckle in the first buckle groove 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 opening 25, and the material of the fastening opening 25 in the brush barrel 2 can be a soft rubber material. The fit between the lower end of the guide member 242 and the fastening opening 25 can be an interference fit, which can ensure sealing and prevent the paste from leaking.

[0053] Furthermore, if Figures 5 to 14 As shown, in the embodiment of the present invention, the brush barrel 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 arranged in the storage column 26, the fastening port 25 is embedded in the upper end of the shell 27, and the base 28 is movably connected to the lower end of the shell 27 so that the upper end surface of the base 28 abuts against the lower end opening of the material cavity 21, wherein when the storage column 26 is installed in the shell 27, the material cavity 21 is connected to the fastening port 25.

[0054] Furthermore, if Figures 8-9 As shown, in the embodiment of the present invention, the storage column 26 is further provided with a display bar 261 on the cylindrical surface located in the material cavity 21. The display bar 261 is a transparent strip for displaying the toothpaste storage in the material cavity 21. The cylindrical surface of the housing 27 is provided with a display slot 271 for installing the display bar 261. The display bar 261 is detachably inserted into the display slot 271. A male buckle 35 is provided at the right end of the display bar 261, and a female buckle 36 is provided at the right end of the housing 27 to communicate with the display slot 271. The display bar 261 is inserted into the display slot 271 so that the male buckle 35 is stuck into the female buckle 36.

[0055] The display bar 261 and the housing 27 can also be connected by providing a sliding groove and a slider, such as Fig.10 As shown, a guide groove 272 is provided on the cylindrical surface of the housing 27 , and corresponding guide sliders 265 are provided on both sides of the display bar 261 . The display bar 261 is installed on the housing 27 by inserting the guide sliders 265 into the guide groove 272 .

[0056] Furthermore, if Figures 7 to 14 As shown, in the embodiment of the present invention, the base 28 includes a soft rubber part 281 and a bottom cover 282. The soft rubber part 281 is detachably installed in the bottom cover 282. The bottom cover 282 is connected to the end of the shell 27 away from the fastening port 25 by a rotating buckle. The upper end surface of the soft rubber part 281 abuts against the opening of the material cavity 21, and the exhaust hole 23 is set in the soft rubber part 281.

[0057] Specifically, at least two second snap grooves 37 are provided at the lower end of the brush barrel 2, and a second snap block 38 corresponding to the second snap groove 37 is provided on the inner wall of the bottom cover 282. When the bottom cover 282 is installed at the lower end of the brush barrel 2, the second snap block 38 is clamped in the second snap groove 37 so that the bottom cover 282 is locked at the lower end of the brush barrel 2.

[0058] Furthermore, if Figures 7 to 14 As shown, in the embodiment of the present invention, a card block 2821 is provided inside the bottom cover 282, and the soft rubber part 281 is provided with a card slot 2811 corresponding to the card block 2821. The soft rubber part 281 is clamped in the card slot 2811 through the card block 2821 so that the soft rubber part 281 is installed inside the bottom cover 282, and the bottom of the soft rubber part 281 is provided with an anti-slip pattern 2812 for increasing friction.

[0059] Specifically, at least two second snap grooves 37 are provided at the lower end of the bottom cover 282, and a second snap block 38 corresponding to the second snap groove 37 is provided on the inner wall of the brush barrel 2. When the brush barrel 2 is installed at the lower end of the bottom cover 282, the second snap block 38 is clamped in the second snap groove 37 so that the brush barrel 2 is locked at the lower end of the bottom cover 282.

[0060] Furthermore, if Figures 5 to 8As shown, in the embodiment of the present invention, 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 the control board, and the control board controls the battery 264 to supply power to the vibration motor 262.

[0061] Working principle of this embodiment: a button is provided on the wall of the brush barrel 2, and one end of the button is electrically connected to the circuit board 263 for signal transmission. When the button is pressed, a signal is transmitted to the circuit board 263 so that the circuit board 263 starts the vibration motor 262, and the vibration motor 262 vibrates the brush barrel 2, thereby driving the brush handle 1 to vibrate and then the end of the bristles 11 to vibrate. When the button is pressed again, a signal is transmitted to the circuit board 263 so that the circuit board 263 controls the vibration motor 262 to stop vibrating.

[0062] Furthermore, if Figures 15-16 As shown, in the embodiment of the present invention, the brush handle 1 is further provided with a protective cover 15, the outer edge of the lower end of the brush handle 1 is chamfered, and the lower end opening of the protective cover 15 is provided with a flange 151 facing inward, and the flange 151 is chamfered to fix the protective cover 15 on the brush handle 1.

[0063] Furthermore, if Figure 3 and Fig.15 As shown, in the embodiment of the present invention, the brush handle 1 is further provided with a screw block 16, and at least two groups of screw blocks 16 are installed at the lower end of the brush handle 1. The operator needs to disassemble the brush handle 1 when replenishing the paste. The screw blocks 16 at both ends can be easily disassembled to play an anti-slip role. Specifically, the forming methods of the screw blocks 16 include but are not limited to integral forming, snap connection and threaded connection.

[0064] In one embodiment of the present invention, the brush handle 1 is installed in the middle of the upper end of the brush barrel 2, and the cross-sectional area of ​​the brush barrel 2 is not less than the cross-sectional area of ​​the brush handle 1, so that when the toothbrush is placed flat on a plane, the brush barrel 2 contacts the plane, and the bristles 11 located at the brush handle 1 cannot contact the plane even if the brush barrel 2 rolls, thereby ensuring the hygiene of the bristles 11. The cross-sectional shape of the brush barrel 2 includes, but is not limited to, circular, square, polygonal, and irregular shapes, and the cross-sectional shape of the brush handle 1 includes, but is not limited to, circular, square, polygonal, and irregular shapes, etc.

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

Claims

1. An electric toothbrush for squeezing toothpaste, wherein the brush handle (1) is detachably mounted on the upper end of the brush barrel (2), characterized in that: The upper end of the brush handle (1) is provided with bristles (11) on the outside, 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 barrel (2) is provided with a material cavity (21), a piston (22) is provided inside the material cavity (21), and the The bottom of the brush barrel (2) is provided with an exhaust hole (23) connected to the material cavity (21); the opening of the material cavity (21) near one end of the brush handle (1) is connected to the connecting hole (12) to form a connecting area; a pressing pump (24) is provided in the brush handle (1); the pressing pump (24) is detachably mounted in the brush handle (1) and is used to generate negative pressure in the connecting hole (12) so as to absorb the paste in the material cavity (21) and transport it to the bristles (11).

2. The electric toothbrush according to claim 1, characterized in that: The brush handle (1) is also provided with a press pump (24), which is inserted into the connecting hole (12), and a second one-way valve (2411) is formed at one end of the press pump (24). The press pump (24) is an internal hollow structure, and is provided with a third one-way valve (2423). The third one-way valve (2423) is embedded in the press pump (24), and the one-way output end of the third one-way valve (2423) faces the bristles (11). The inside of the press pump (24) is protruded outward to form a press block (2412), and a press opening (14) is provided on the handle surface of the brush handle (1) close to the press block (2412) for exposing the press block (2412).

3. The electric toothbrush according to claim 2, characterized in that: The upper inner end of the brush barrel (2) is provided with a fastening opening (25), the fastening opening (25) is made of a soft rubber part, the lower end of the fastening opening (25) is connected to the material chamber (21), the lower end of the pressing pump (24) is detachably connected to the fastening opening (25) so that the lower end of the third one-way valve (2423) is connected to the fastening opening (25), and the fastening opening (25) is provided with an internal thread (251) for fastening the toothpaste outlet when the toothpaste is added to the material chamber (21).

4. The electric toothbrush according to claim 2, characterized in that: The pressing pump (24) comprises a casing (241) and a flow guide (242); the casing (241) is inserted into the connecting hole (12) so that two chambers are formed inside the brush handle (1); the interior of the casing (241) is a hollow structure; the second one-way valve (2411) is arranged at the upper end of the casing (241); the pressing block (2412) is arranged on a side of the casing (241) facing the pressing port (14); the flow guide (242) is detachably mounted in the casing (241); a first through hole (2421) is provided inside the flow guide (242); One end of the first through hole (2421) close to the bristles (11) abuts against the second one-way valve (2411), and a pressure hole (2422) is provided on the cylindrical surface of the guide member (242) close to the pressing block (2412) for connecting with the pressing block (2412). The third one-way valve (2423) is detachably mounted at the first through hole (2421), and the one-way output end of the third one-way valve (2423) faces the bristles (11). The lower end of the guide member (242) is detachably connected to the fastening port (25) so that the first through hole (2421) is connected with the fastening port (25).

5. The electric toothbrush according to claim 1, characterized in that: The brush cylinder (2) comprises a storage column (26), an outer shell (27) and a base (28); the storage column (26) is inserted into the inner part of the outer shell (27); the material cavity (21) is arranged in the storage column (26); the fastening opening (25) is embedded in the upper end of the outer shell (27); the base (28) is movably connected to the lower end of the outer shell (27) so that the upper end surface of the base (28) abuts against the lower end opening of the material cavity (21).

6. The electric toothbrush according to claim 5, characterized in that: The storage column (26) is also provided with a vibration component, 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 battery (264) to supply power to the vibration motor (262).

7. The electric toothbrush according to claim 5, characterized in that: The storage column (26) is also provided with a display bar (261) on the cylindrical surface located in the material cavity (21); the display bar (261) is a transparent strip used to display the paste storage amount in the material cavity (21); and the cylindrical surface of the housing (27) is provided with a display groove (271) for installing the display bar (261).

8. The electric toothbrush according to claim 5, characterized in that: The base (28) comprises a soft rubber part (281) and a bottom cover (282); the soft rubber part (281) is detachably mounted inside the bottom cover (282); the bottom cover (282) is connected to an end of the housing (27) away from the fastening opening (25) via a rotating buckle; the upper end surface of the soft rubber part (281) abuts against the opening of the material cavity (21); and the exhaust hole (23) is arranged inside the soft rubber part (281).

9. The electric toothbrush according to claim 7, characterized in that: The bottom cover (282) is provided with a card block (2821) inside, the soft rubber part (281) is provided with a card slot (2811) corresponding to the card block (2821), the soft rubber part (281) is locked in the card slot (2811) through the card block (2821) so that the soft rubber part (281) is installed inside the bottom cover (282), and the bottom of the soft rubber part (281) is provided with anti-slip grooves (2812) for increasing friction.

10. The electric toothbrush according to claim 1, characterized in that: The brush handle (1) is also provided with a protective cover (15), the outer edge of the lower end of the brush handle (1) is chamfered, the lower end opening of the protective cover (15) is provided with a flange (151) facing inward, the flange (151) is clamped with the chamfer so that the protective cover (15) is fixed on the brush handle (1), and the brush handle (1) is also provided with a screw block (16), and at least two groups of screw blocks (16) are installed at the lower end of the brush handle (1).

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