Toothbrush with two water tanks for switching between liquid sources

Abstract

A tooth irrigator with two water tanks for switching between the liquid sources, characterized in that it includes: a solenoid valve (100) wherein the solenoid valve (100) comprises an outlet section (110), a first inlet section (120), a second inlet section (130), a valve core (150) and a solenoid coil, wherein the valve core (150) can be controlled in motion by controlling the solenoid coil to switch on and off in order to block either the first inlet section (120) or the second inlet section (130); a first water tank (210), wherein the first inlet section (120) is connected to the first water tank (210); a second water tank (220), wherein the second inlet section (130) is connected to the second water tank (220); a water discharge pipe (300), wherein one end of the water discharge pipe (300) is connected to the outlet section (110); a pump arrangement (400), wherein the pump arrangement (400) is connected to the other end of the water discharge pipe (300) and to the spray outlet (500) of the tooth irrigator.

Description

Technical area

[0001] The present application relates to the technical field of dental irrigators, in particular to a dental irrigator with two water tanks for switching the liquid sources. State of the art

[0002] Mouthwashes are oral cleaning devices that use a pulsating water stream to clean the teeth and interdental spaces. Mouthwashes have the primary function of cleaning the mouth, masking bad breath caused by bacteria or yeast that break down food debris, and leaving a pleasant, refreshing feeling in the mouth. These two functions complement each other, and users often rinse their mouths with mouthwash after rinsing their teeth with a mouthwash. However, both the mouthwash and the mouthwash (usually bottled) take up a lot of space, and portability while traveling could be improved.

[0003] The patent, granted under Chinese Patent Application No. CN213130038U, discloses a dual-tank dental irrigator, in which two water tanks and two water pipes are designed to contain different liquids to meet user needs. However, the structure of the dental irrigator is complicated, the water pipe occupies a large space, and the switching element for controlling the liquid flow is prone to wear on the water pipe of the dental irrigator, so there is still room for improvement in stability and durability. Contents of this utility model

[0004] To solve or mitigate at least one of the problems described in the prior art, the present application provides a dental irrigator with two water tanks for switching the liquid sources.

[0005] The dental irrigator with two water tanks for switching the liquid sources of the present application comprises: a solenoid valve, wherein the solenoid valve has an outlet portion, a first inlet portion, comprising a second inlet section, a valve core and a solenoid, wherein the valve core can be controlled to move on and off to block either the first inlet section or the second inlet section by controlling the solenoid; a first water tank, wherein the first inlet portion is connected to the first water tank; a second water tank, wherein the second inlet portion is connected to the second water tank; a water drainage pipe, wherein one end of the water drainage pipe is connected to the outlet portion; a pump assembly, the pump assembly being connected to the other end of the water discharge pipe and to the spray outlet of the dental irrigator.

[0006] In at least one embodiment, the solenoid valve comprises: a valve body, the valve body comprising a main portion, the first inlet portion and the second inlet portion extending axially outward from the main portion, while the outlet portion extends radially outward from the main portion, the interface between the first inlet portion and the main portion being a first end face, while the interface between the second inlet portion and the main portion being a second end face, and the solenoid coil being provided in the main portion or radially outward therefrom, the solenoid coil being located at one end of the main portion near the second end face, the solenoid coil being energized and then attracting the valve core to move axially and toward the second end face and to abut against the second end face, the valve core being connected to a spring on the radially outer side of thewherein the spring further abuts or is connected to the second end surface, wherein the spring can cause the valve core to move axially and in the direction facing the first end surface to abut the first end surface when the solenoid is de-energized.

[0007] In at least one embodiment, the peripheral surface of the valve core comprises a circularly curved surface and a flat surface, and the inner circumferential wall surface of the main portion comprises a cylindrical surface, wherein a fluid flow channel is formed between the flat surface of the valve core and the cylindrical surface of the main portion.

[0008] In at least one embodiment, the valve core comprises a valve core main portion and a valve core offset portion, wherein the valve core main portion comprises the cylindrical surface and the flat surface, wherein one end of the valve core in the direction facing the first end surface is formed with the cylindrical valve core offset portion, wherein the valve core offset portion is located within the valve core main portion in the axial projection of the valve core.

[0009] In at least one embodiment, a valve body holder is provided outside the valve body, wherein the valve body holder comprises a first passage of the valve body holder and a second passage of the valve body holder, wherein the second water tank is connected to the first inlet section via the first passage of the valve body holder, and while the first water tank is connected to the second inlet section via the second passage of the valve body holder.

[0010] In at least one embodiment, the first passage of the valve body holder extends directly into the second water tank, while the second passage of the valve body holder extends into the first water tank via an arc tube.

[0011] In at least one embodiment, the pump assembly comprises a pressure chamber, one end of the pressure chamber being connected to the water discharge pipe and directing the liquid from the solenoid valve into the pressure chamber, and a first shut-off valve being provided between the water discharge pipe and the pressure chamber, the other end of the pressure chamber being connected to the spray outlet and causing the liquid in the pressure chamber to be sprayed from the dental irrigator through the spray outlet, a second shut-off valve being provided between the pressure chamber and the spray outlet.

[0012] In at least one embodiment, the pump assembly comprises: a transmission shaft; an eccentric bushing, the eccentric bushing being firmly connected to the transmission shaft; a transmission rod, one end of the transmission rod being fitted in the eccentric bushing, while the other end of the transmission rod is connected to a diaphragm, the diaphragm being formed as one side of the pressure chamber.

[0013] In at least one embodiment, the dual water tank dental irrigator comprises a power supply and a motor, wherein the power supply is connected to the motor, and wherein the output shaft of the motor drives the transmission shaft in rotation.

[0014] In at least one embodiment, the dual water tank dental irrigator includes a nozzle, the nozzle being connected to the spray outlet.

[0015] The embodiment of the present application provides a first water tank for storing rinsing water and a second water tank for storing mouthwash. The user can use the solenoid valve to select liquids, such as rinsing the mouth with mouthwash after rinsing, which is highly portable. The present application uses only one water drainage pipe instead of two as in the prior art, resulting in a relatively simple structure and more reasonable space allocation. The solenoid valve also prevents the water drainage pipe from wearing out, resulting in an overall longer service life of the dental irrigator. Description of the drawings Fig. 1 shows a schematic diagram of the structure of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 2 shows a cross-sectional view of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 3 shows a schematic representation of the structure of a pump assembly of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 4 shows an axonometric representation of a solenoid valve of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 5 shows a cross-sectional view of a solenoid valve of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 6 shows a schematic diagram of the structure of a valve core and a spring of a solenoid valve of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 7 shows a schematic diagram of the structure of a valve body holder of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application. Fig. 8 shows a cross-sectional view of a dental irrigator with two water tanks for switching the liquid sources according to an embodiment of the present application, which is provided with a solenoid valve. Reference list:

[0016] 100 solenoid valve; 110 outlet portion; 120 first inlet portion; 121 first end face; 130 second inlet portion; 131 second end face; 140 valve body; 141 main portion; 1411 cylindrical surface; 150 valve core; 151 circular curved surface; 152 flat surface; 153 valve core main section; 154 valve core offset section; 160 valve body bracket; 161 first pass of the valve body holder; 162 second pass of the valve body holder; 180 spring; 210 first water tank; 211 first refill opening; 220 second water tank; 221 second refill opening; 300 water drainage pipe; 400 Pump assembly; 410 Pressure chamber; 411 First shut-off valve; 412 Second shut-off valve; 420 Gear shaft; 421 Gear; 430 Eccentric bushing; 440 Transmission rod; 450 Diaphragm; 460 Transmission gear; 500 spray outlet; 510 nozzle; 610 battery; 620 engine. Detailed embodiment

[0017] Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It is understood that these specific descriptions are intended only to illustrate how a person skilled in the art might practice the present application. They are not intended to be exhaustive of all practical ways in which the application may be practiced, nor are they intended to limit the scope of the present application.

[0018] The present application provides a dental irrigator with two water tanks for switching between the liquid sources. As described in the Fig. 1 to 5, the dual water tank dental irrigator may include a solenoid valve 100, a first water tank 210, a second water tank 220, a water drainage pipe 300, and a pump assembly 400.

[0019] As in the Fig. 4 and Fig. As shown in Figure 5, the solenoid valve 100 may include an outlet portion 110, a first inlet portion 120, a second inlet portion 130, a valve core 150, and a solenoid coil. The valve core 150 may be controlled to move to block the first inlet portion 120 and the second inlet portion 130 by controlling the solenoid coil to turn on and off. The first inlet portion 120 may be connected to a first water tank 210, the second inlet portion 130 may be connected to a second water tank 220, and the outlet portion 110 is connected to one end of the water discharge pipe 300. By controlling the blocking state of the first inlet portion 120 and the second inlet portion 130 by the solenoid coil, the liquid in the corresponding water tank can be selected to achieve switching of the liquid source of the dental irrigator.

[0020] As in Fig. 3, the pump assembly 400 may include a pressure chamber 410 connected to the other end of the water discharge pipe 300 and the spray outlet 500 of the dental irrigator, and a nozzle 510 may be provided outside the spray outlet 500 (see Fig. 1, Fig. 2). As the dashed arrows in Fig. 3, the liquid from the first water tank 210 or the second water tank 220 can be sprayed out from the spray outlet 500 after passing through the water discharge pipe 300, the pressure chamber 410.

[0021] Optionally, the first water tank 210 may contain rinse water, and the second water tank 220 may contain mouthwash. The volume of the first water tank 210 may be larger than the volume of the second water tank 220. The user can rinse their mouth with the mouthwash sprayed from the dental irrigator after rinsing is complete without carrying two separate hygiene products, which is more portable. The present application uses only one water discharge pipe 300 instead of two water pipes (water discharge pipe 500) as in the prior art, which is relatively simple in structure and more reasonable in space layout. Due to the station switching operation of the solenoid valve 100, the water discharge pipe 300 is not worn, making the dental irrigator robust and durable.

[0022] In one embodiment of the present application, as in Fig. 5, the solenoid valve 100 may include a valve body 140. The valve body 140 may include a main portion 141, a first inlet portion 120 and a second inlet portion 130 extending axially outward from the main portion 141, and an outlet portion 110 extending radially outward from the main portion 141. The interface between the first inlet portion 120 and the main portion 141 is a first end surface 121, while the interface between the second inlet portion 130 and the main portion 141 is a second end surface 131. The main portion 141 may be formed by joining two structures.

[0023] A solenoid coil (not shown in the figures) is provided in the main portion 141 or radially outside the main portion 141, and the solenoid coil, when energized, can attract the valve core 150 to move along the axial direction of the main portion 141 and in the direction facing the second end surface 131 to abut the second end surface 131.

[0024] As in the Fig. 5 and Fig. 6, the valve core 150 is connected to a spring 180 on the radially outer side, and the spring 180 also abuts against the second end surface 131 or is connected to the second end surface, and the spring 180 is capable of causing the valve core 150 to move in the axial direction and in the direction facing the first end surface 121 to abut against the first end surface 121 when the solenoid is turned off.

[0025] In one embodiment of the present application, see Fig. 5 and Fig. 6, a peripheral surface of the valve core 150 includes a circular arcuate surface 151 and a flat surface 152, an inner circumferential wall surface of the main portion 141 includes a cylindrical surface 1411, and a fluid passage is formed between the flat surface 152 of the valve core 150 and the inner wall surface of the main portion 141. When the valve core 150 closes the first inlet portion 120, the fluid from the second inlet portion 130 can be connected to the outlet portion 110 through this fluid passage.

[0026] In one embodiment of the present application, as in Fig. 5, the valve core 150 includes a valve core main portion 153 and a valve core offset portion 154. The valve core main portion 153 has the above circular arcuate surface 151 and flat surfaces 152. A cylindrical valve core offset portion 154 is formed at one end of the valve core 150 in the direction facing the first end surface 121. In the axial projection of the valve core 150, the valve core offset portion 154 is located inside the valve core main portion 153, so that when the valve core 150 seals the first inlet portion 120, a larger space is provided between the valve core offset portion 154 and the outlet portion 110, thereby facilitating the communication of the fluid from the second inlet portion 130 to the outlet portion 110.

[0027] In one embodiment of the present application, as described in the Fig. 7 and Fig. 8, a valve body support 160 is provided outside the valve body 140, the valve body support 160 including a first valve body support passage 161 and a second valve body support passage 162, the second water tank 220 being connected to the first inlet portion 120 via the first valve body support passage 161, and the first water tank 210 being connected to the second inlet portion 130 via the second valve body support passage 162. For example, the first valve body support passage 161 extends directly into the second water tank 220, while the second valve body support passage 162 extends into the first water tank 210 via an arc tube.It is understood that the valve body bracket 160 facilitates the fixing of the position of the solenoid valve, and the first passage 161 of the valve body bracket and the second passage 162 of the valve body bracket facilitate the change of the direction of the first inlet portion 120 and the second inlet portion 130 in the axial direction of the solenoid valve 100 to the radial direction, which facilitates the connection of the solenoid valve 100 to the water tank. The valve body bracket 160 can be formed by joining two structures.

[0028] In one embodiment of the present application, the dual-tank dental irrigator may include a solenoid valve controller for controlling the energization of the solenoid coil. The solenoid valve controller may include manually adjustable buttons to allow a user to manually control the activation and deactivation of the solenoid coil 160. Of course, it is also possible to connect the solenoid valve controller to a mobile device application to periodically switch the fluid source, for example, to automatically switch the dental irrigator to mouthwash for rinsing the mouth after spraying water for rinsing the teeth for 2 minutes.

[0029] In one embodiment of the present application, as in Fig. 3, the pump assembly 400 includes a pressure chamber 410. One end of the pressure chamber 410 is connected to the water discharge pipe 300 and introduces fluid from the solenoid valve 100 into the pressure chamber 410, and a first shut-off valve 411 is provided between the water discharge pipe 300 and the pressure chamber 410; the other end of the pressure chamber 410 is connected to the spray outlet 500 and causes the fluid in the pressure chamber 410 to be sprayed from the dental irrigator through the spray outlet 500, and a second shut-off valve 412, which may be a duckbill valve, is provided between the pressure chamber 410 and the spray outlet 500.

[0030] In one embodiment of the present application, as in Fig. As shown in Figure 2, the dual-tank dental irrigator may include a battery 610 and a motor 620. The battery 610 is connected to the motor 620, and an output shaft of the motor 620 is connected to the pump assembly 400 for pumping the liquid.

[0031] In one embodiment of the present application, as in Fig. As shown in Figure 3, the pump assembly 400 may include a gear shaft 420, an eccentric bushing 430, and a transmission rod 440. The eccentric bushing 430 is fixedly connected to the gear shaft 420, one end of the transmission rod 440 is connected to the eccentric bushing 430, and the other end of the transmission rod is connected to a diaphragm 450 formed as one side of the pressure chamber 410. The operating principle may be as follows: The gear shaft 420 is driven by the motor 620 to rotate the eccentric bushing 430, and the transmission rod 440 forms a cam mechanism with the eccentric bushing 430 to reciprocate the transmission rod 440. When the transmission rod 440 moves upward, the liquid in the pressure chamber 410 is pumped out of the spray outlet 500.When the transmission rod 440 moves downward, the transmission rod 440 pumps the liquid in the first water tank 210 or the second water tank 220 into the pressure chamber 410.

[0032] Furthermore, the pump assembly 400 may include a transmission gear 460 to which an output shaft of the motor 620 is connected. The transmission gear 460 meshes with a gear 421 of the transmission shaft 420 to rotate the transmission shaft 420. The transmission gear 460 and the gear 421 of the transmission shaft 420 may be bevel gears with intersecting axes.

[0033] In one embodiment of the present application, as described in Fig. 1 and Fig. 2, a first refilling port 211 is provided on the side of the first water tank 210 and a second refilling port 221 is provided on the side of the second water tank 220, and the corresponding liquids can be refilled for each water tank through each refilling port, respectively.

[0034] In one embodiment of the present application, as in Fig. 2, the first water tank 210 is arranged on a lower side of the second water tank 220. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 213130038U

[0003]

Claims

[1] Dental irrigator with two water tanks for switching the liquid sources, characterized by that it includes: a solenoid valve (100), the solenoid valve (100) comprising an outlet portion (110), a first inlet portion (120), a second inlet portion (130), a valve core (150), and a solenoid coil, the valve core (150) being controllable to move by controlling the solenoid coil to switch on and off to block either the first inlet portion (120) or the second inlet portion (130); a first water tank (210), wherein the first inlet portion (120) is connected to the first water tank (210); a second water tank (220), wherein the second inlet portion (130) is connected to the second water tank (220); a water drainage pipe (300), wherein one end of the water drainage pipe (300) is connected to the outlet portion (110); a pump assembly (400), wherein the pump assembly (400) is connected to the other end of the water discharge pipe (300) and to the spray outlet (500) of the dental irrigator. [2] Dental irrigator with two water tanks for switching the liquid sources according to claim 1, characterized by that the solenoid valve (100) comprises: a valve body (140), the valve body (140) comprising a main portion (141), the first inlet portion (120) and the second inlet portion (130) extending axially outward from the main portion (141), while the outlet portion (110) extending radially outward from the main portion (141), the interface between the first inlet portion (120) and the main portion (141) being a first end face (121), while the interface between the second inlet portion (130) and the main portion (141) being a second end face (131), and the solenoid coil being provided in the main portion (141) or radially outward therefrom, the solenoid coil being located at one end of the main portion (141) near the second end face (131), the solenoid coil being energized and then attracting the valve core (150) to move axially and toward the second end face (131) and rests against the second end surface (131),wherein the valve core (150) is connected to a spring (180) on the radially outer side of the valve core, wherein the spring (180) further abuts the second end surface (131) or is connected to the second end surface (131), wherein the spring (180) can cause the valve core (150) to move axially and in the direction facing the first end surface (121) to abut the first end surface (121) when the solenoid is de-energized. [3] Dental irrigator with two water tanks for switching the liquid sources according to claim 2, characterized by that the peripheral surface of the valve core (150) comprises a circularly curved surface (151) and a flat surface (152), and that the inner wall surface in the circumferential direction of the main portion (141) comprises a cylindrical surface (1411), wherein a fluid flow channel is formed between the flat surface (152) of the valve core (150) and the cylindrical surface (1411) of the main portion (141). [4] Dental irrigator with two water tanks for switching the liquid sources according to claim 3, characterized by in that the valve core (150) comprises a valve core main portion (153) and a valve core offset portion (154), wherein the valve core main portion (153) comprises the cylindrical surface (151) and the flat surface (152), wherein one end of the valve core (150) in the direction facing the first end surface (121) is formed with the cylindrical valve core offset portion (154), wherein the valve core offset portion (154) is located within the valve core main portion (153) in the axial projection of the valve core (150). [5] Dental irrigator with two water tanks for switching the liquid sources according to claim 2, characterized bythat a valve body holder (160) is provided outside the valve body (140), wherein the valve body holder (160) comprises a first passage (161) of the valve body holder and a second passage (162) of the valve body holder, wherein the second water tank (220) is connected to the first inlet section (120) via the first passage (161) of the valve body holder, and while the first water tank (210) is connected to the second inlet section (130) via the second passage (162) of the valve body holder. [6] Dental irrigator with two water tanks for switching the liquid sources according to claim 5, characterized by that the first passage (161) of the valve body holder extends directly into the second water tank (220), while the second passage (162) of the valve body holder extends via a curved pipe into the first water tank (210). [7] Dental irrigator with two water tanks for switching the liquid sources according to claim 1, characterized by in that the pump arrangement (400) comprises a pressure chamber (410), wherein one end of the pressure chamber (410) is connected to the water discharge pipe (300) and conducts the liquid from the solenoid valve (100) into the pressure chamber (410), and wherein a first shut-off valve (411) is provided between the water discharge pipe (300) and the pressure chamber (410), wherein the other end of the pressure chamber (410) is connected to the spray outlet (500) and causes the liquid in the pressure chamber (410) to be sprayed from the dental irrigator through the spray outlet (500), wherein a second shut-off valve (412) is provided between the pressure chamber (410) and the spray outlet (500). [8] Dental irrigator with two water tanks for switching the liquid sources according to claim 7, characterized by that the pump arrangement (400) comprises: a transmission shaft (420); an eccentric bushing (430), wherein the eccentric bushing (430) is fixedly connected to the gear shaft (420); a transmission rod (440), one end of the transmission rod (440) being mounted in the eccentric bushing (430), while the other end of the transmission rod (440) is connected to a diaphragm (450), the diaphragm (450) being formed as one side of the pressure chamber (410). [9] Dental irrigator with two water tanks for switching the liquid sources according to claim 8, characterized by that the dental irrigator with two water tanks comprises a power supply (610) and a motor (620), wherein the power supply (610) is connected to the motor (620), and wherein the output shaft of the motor (620) drives the gear shaft (420) in rotation. [10] Dental irrigator with two water tanks for switching the liquid sources according to claim 1, characterized bythat the dental irrigator with two water tanks comprises a nozzle (510), wherein the nozzle (510) is connected to the spray outlet (500).

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