Rotary valve for oral irrigator and double-water-tank oral irrigator

Abstract

The utility model provides a rotary valve for a water pick and a double-water-tank water pick. A rotary valve for an oral irrigator may include a valve body and a spool. The valve body comprises a main part, and a first inlet part, a second inlet part and an outlet part which extend from the main part. The first inlet part and the second inlet part are located on the circumferential surface of the main part, and the first inlet part and the second inlet part have the same position in the circumferential direction of the main part and are arranged side by side in the axial direction. The valve element comprises a first sealing part and a second sealing part which are arranged on the circumferential face of the valve element. The first sealing part is used for blocking the first inlet part, the second sealing part is used for blocking the second inlet part, and the first sealing part and the second sealing part are staggered in the circumferential direction and the axial direction of the circumferential face of the valve element so that the valve element can selectively and thoroughly block one of the first inlet part and the second inlet part. The double-water-tank oral irrigator comprises the rotary valve, a first water tank, a second water tank, a water conduit, a pump assembly and a nozzle.

Description

Technical Field

[0001] The present application relates to the technical field of water flossers, and in particular to a rotary valve for water flossers and a double-tank water flosser. Background Art

[0002] The water flosser is an auxiliary tool for cleaning the oral cavity, which uses pulsed water flow to clean teeth and gaps between teeth. The main function of mouthwash (gargle) is to clean the oral cavity, cover up bad breath caused by bacteria or yeast decomposing food residues, and leave a comfortable and refreshing feeling in the mouth. The two functions complement each other, and users often rinse their mouths with mouthwash after using the water flosser to rinse their teeth. However, the water flosser and mouthwash (usually in bottles) take up space, and their travel portability needs to be improved.

[0003] The patent with the authorization announcement number CN213130038U discloses a double-tank water flosser, which is designed with two water tanks and two water pipes in the water flosser to be able to load different liquids to meet the needs of users. However, its structure is complex, the water pipes occupy a large space, the switching parts that control the outflow of liquid will cause wear to its water pipes, and the stability and durability need to be improved. Utility Model Content

[0004] In order to solve or alleviate at least one of the problems mentioned in the background art, the present application provides a rotary valve for a water flosser and a double-tank water flosser.

[0005] The rotary valve for the water flosser provided in the present application includes:

[0006] A valve body, the valve body comprising a main portion and a first inlet portion, a second inlet portion and an outlet portion extending from the main portion, the first inlet portion and the second inlet portion being located on a circumferential surface of the main portion, and the first inlet portion and the second inlet portion being located at the same position in the circumferential direction of the main portion and being arranged side by side in the axial direction;

[0007] A valve core, the valve core includes a first sealing portion and a second sealing portion arranged on its circumferential surface, the first sealing portion is used to block the first inlet portion, and the second sealing portion is used to block the second inlet portion, the first sealing portion and the second sealing portion are staggered in the circumferential direction and axial direction of the circumferential surface of the valve core so that the valve core selectively and completely blocks one of the first inlet portion and the second inlet portion.

[0008] In at least one embodiment, the first sealing portion and the second sealing portion differ by 60° to 120° in the circumferential direction of the circumferential surface of the valve core, and the valve core can simultaneously block a portion of the interface between the first inlet portion and the main portion and a portion of the interface between the second inlet portion and the main portion, so that the liquid in the first inlet portion and the liquid in the second inlet portion can enter the valve body at the same time.

[0009] In at least one embodiment, the first inlet portion and the second inlet portion are located at the bottom of the valve body.

[0010] In at least one embodiment, the first sealing portion and the second sealing portion are silicone.

[0011] In at least one embodiment, shaft shoulders are provided at both axial ends of the valve core, and the shaft shoulders abut against the inner wall surface of the main portion, so that the axes of the valve core and the main portion coincide with each other.

[0012] In at least one embodiment, a hand wheel is connected to the end of the valve core.

[0013] The double water tank water flosser provided in this application includes:

[0014] A rotary valve for a dental flosser as described above;

[0015] a first water tank, the first inlet portion being connected to the first water tank;

[0016] a second water tank, the second inlet portion being connected to the second water tank;

[0017] A water diversion pipe, one end of which is connected to the outlet;

[0018] A pump assembly, the pump assembly being connected to the other end of the water diversion pipe and the spray outlet of the water flosser;

[0019] A nozzle is connected to the ejection port.

[0020] In at least one embodiment, the pump assembly includes a pressure chamber, one end of which is connected to the water diversion pipe and introduces the liquid in the rotary valve into the pressure chamber, and a first one-way valve is provided between the water diversion pipe and the pressure chamber.

[0021] The other end of the pressure chamber is connected to the spray port and allows the liquid in the pressure chamber to spray out of the oral irrigator through the spray port. A second one-way valve is provided between the pressure chamber and the spray port.

[0022] In at least one embodiment, the pump assembly comprises:

[0023] Gear shaft;

[0024] An eccentric sleeve, the eccentric sleeve is fixedly connected to the gear shaft;

[0025] A transmission rod, one end of which is sleeved on the eccentric shaft sleeve, and the other end of which is connected to a diaphragm, and the diaphragm forms one side of the pressure chamber.

[0026] In at least one embodiment, the first water tank and the second water tank are respectively provided with a liquid replenishing port.

[0027] The rotary valve provided in the embodiment of the present application can stably realize the selection of liquid circulation in the valve without wearing out the water guide tube in the oral irrigator. The structure is stable and durable and has a long service life.

[0028] The first water tank provided in the embodiment of the present application can store water for flushing teeth, and the second water tank can store water for mouthwash. The user can select liquid by controlling the rotary valve, for example, using mouthwash for rinsing the mouth after flushing teeth, which is highly portable. The present application only uses one water pipe instead of two water pipes (water pipes) as in the background art, and the structure is relatively simple, and the space allocation is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A front view of a double-tank oral irrigator according to an embodiment of the present application is shown.

[0030] Figure 2 A side view of a double-tank oral irrigator according to an embodiment of the present application is shown.

[0031] Figure 3 A cross-sectional view of a double-tank water flosser according to an embodiment of the present application is shown.

[0032] Figure 4 A schematic structural diagram of a first water tank and a second water tank of a double-tank oral irrigator according to an embodiment of the present application is shown.

[0033] Figure 5 A schematic structural diagram of a pump assembly of a dual-tank oral irrigator according to an embodiment of the present application is shown.

[0034] Figure 6 Shows Figure 3 A partial enlarged view of the dual-tank water flosser.

[0035] Figure 7 A schematic structural diagram of a rotary valve for a water flosser according to an embodiment of the present application is shown.

[0036] Figure 8 A cross-sectional view of a rotary valve for a dental flosser according to an embodiment of the present application is shown.

[0037] Fig. 9A schematic structural diagram of a valve core in a rotary valve for a dental flosser according to an embodiment of the present application is shown.

[0038] Description of Reference Numerals

[0039] 100 rotary valve; 110 outlet; 120 first inlet; 130 second inlet; 140 valve body; 141 main part; 150 valve core; 151 first sealing part; 152 second sealing part; 153 shaft shoulder; 154 hand wheel;

[0040] 210 first water tank; 211 first liquid replenishing port; 220 second water tank; 221 second liquid replenishing port;

[0041] 300 water pipe;

[0042] 400 pump assembly; 410 pressure chamber; 411 first one-way valve; 412 second one-way valve; 420 gear shaft; 421 gear; 430 eccentric bushing; 440 transmission rod; 450 diaphragm; 460 transmission gear;

[0043] 500: nozzle; 510: nozzle;

[0044] 610 battery; 620 motor. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present application, and are not intended to exhaust all possible methods of the present application, nor to limit the scope of the present application.

[0046] Embodiments of the present application provide a rotary valve for a water flosser (hereinafter sometimes referred to as a "rotary valve") and a double-tank water flosser.

[0047] See also Figure 7 , Figure 8 and Fig. 9 The rotary valve 100 may include a valve body 140 and a valve core 150. The valve body 140 may include a main portion 141 and a first inlet portion 120, a second inlet portion 130 and an outlet portion 110 extending from the main portion 141. The first inlet portion 120 and the second inlet portion 130 are located on the circumferential surface of the main portion 141, and the first inlet portion 120 and the second inlet portion 130 are located at the same position in the circumferential direction of the main portion 141 and are arranged side by side in the axial direction.

[0048] The valve core 150 includes a first sealing portion 151 and a second sealing portion 152 on its circumferential surface. The valve core 150 is rotatably disposed in the main portion 141, the first sealing portion 151 can block the first inlet portion 120, the second sealing portion 152 can block the second inlet portion 130, and the first sealing portion 151 and the second sealing portion 152 are staggered in the circumferential direction and axial direction of the circumferential surface of the valve core 150 so that only one of the first inlet portion 120 and the second inlet portion 130 can be completely blocked by the valve core 150.

[0049] It can be understood that the present application applies the rotary valve 100 to the water flosser, the liquid switching process is simple, and the water supply pipe 300 of the double water tank water flosser is not worn (see Figure 5 , introduced later), the structure is stable and durable, and the service life is long.

[0050] In one embodiment of the present application, see Figure 8 and Fig. 9 The first sealing portion 151 and the second sealing portion 152 differ by 60° to 120° (for example, 90°) in the circumferential direction of the circumferential surface of the valve core 150. The valve core 150 can simultaneously block a portion of the interface between the first inlet portion 120 and the main portion 141 and a portion of the interface between the second inlet portion 130 and the main portion 141, so that the liquid in the first inlet portion 120 and the liquid in the second inlet portion 130 can enter the valve body 140 at the same time.

[0051] That is, by controlling the rotation angle of the valve core 150, the outlet portion 110 can be connected to the first inlet portion 120 and the second inlet portion 130 at the same time, and the user can control the liquid spraying ratio as needed. For example, the interface between the first inlet portion 120 and the main portion 141 is blocked by 20% by the valve core 150, and the interface between the second inlet portion 130 and the main portion 141 is blocked by 80% by the valve core 150, so that the liquid (clean water) in the first water tank 210 (described later) connected to the first inlet portion 120 accounts for 80% of the liquid sprayed by the water flosser, and the liquid (mouthwash) in the second water tank 220 (described later) connected to the second inlet portion 130 accounts for 20% of the liquid sprayed by the water flosser. Thus, the liquid in the second water tank 220 can be filled with high-concentration mouthwash, and the mouthwash is diluted to a suitable concentration by controlling the liquid ratio during use, so that the replacement frequency of the mouthwash in the second water tank can be reduced, which is more in line with the user's use needs and increases user stickiness.

[0052] The valve core 150 can be rotated manually or controlled by a motor. The motor controller can be connected to the application of the user's mobile terminal, so that the user can customize the liquid mixing ratio, and the motor drives the valve core 150 to rotate the corresponding angle to achieve its mixing ratio.

[0053] In one embodiment of the present application, see Figure 8The first inlet 120 and the second inlet 130 are located at the bottom of the valve body 140. The design that the first inlet 120 and the second inlet 130 are both located at the bottom facilitates the installation of the rotary valve 100, for example, it can be vertically inserted into the corresponding interface of the water tank, and the structure is simple and easy to install. The interface of the outlet 110 for connecting to the water diversion pipe 300 can face upwards, which is convenient for it to be connected to the water diversion pipe 300.

[0054] In one embodiment of the present application, see Figure 8 The inner cavity of the main part 141 can be cylindrical, and shoulders 153 are provided at both axial ends of the valve core 150. The shoulders 153 abut against the inner wall surface of the main part 141, so that the axes of the valve core 150 and the main part 141 coincide with each other, which facilitates the sealing part to smoothly seal the corresponding inlet part.

[0055] In one embodiment of the present application, the first sealing portion 151 and the second sealing portion 152 may include or be silicone. Of course, they may also be formed of other materials, such as other types of soft materials, as long as they can achieve the blocking function.

[0056] In one embodiment of the present application, see Figure 7 and Figure 8 , a handwheel 154 is connected to the end of the valve core 150. The valve core 150 is rotated by the handwheel 154 to control the on and off of the corresponding liquid. A rotation angle limiting structure of the handwheel 154 can be set at the handwheel 154, for example, the limit of the clockwise rotation of the handwheel 154 is set to completely block the first inlet 120, and the limit of the counterclockwise rotation is set to completely block the second inlet 130. The rotation angle limiting structure may include an arc track, and the handwheel 154 is connected to the valve core through a connecting rod, and a moving block is provided on the connecting rod, and the moving block is set in the track, and the position of the moving block is limited by the arc track to achieve the limitation of the rotation angle of the handwheel 154.

[0057] See also Figures 1 to 6 The double water tank water flosser may include a first water tank 210, a second water tank 220, a water guide pipe 300, a pump assembly 400 and the aforementioned rotary valve 100. Figure 6 The first inlet portion 120 is connected to the first water tank 210 , the second inlet portion 130 is connected to the second water tank 220 , and the outlet portion 110 is connected to one end of the water diversion pipe 300 .

[0058] See also Figure 5 The pump assembly 400 includes a pressure chamber 410, one end of the pressure chamber 410 (eg Figure 5 The upper right end of the pressure chamber 410 from the perspective of the rotary valve 100 is connected to the water guide pipe 300 to introduce the liquid in the rotary valve 100 into the pressure chamber 410. The other end of the pressure chamber (e.g. Figure 5The pressure chamber 410 is connected to the ejection port 500, and the liquid in the pressure chamber 410 is ejected out of the dental flosser through the ejection port 500. A nozzle 510 (shown in FIG. 1 ) may be provided outside the ejection port 500. Figure 1 , Figure 2 and Figure 3 ).

[0059] like Figure 5 As shown by the dotted arrow in , the liquid in the first water tank 210 or the second water tank 220 can be ejected from the ejection port 500 after passing through the water guide pipe 300 and the pressure chamber 410. Optionally, the first water tank 210 can store water for teeth flushing, and the second water tank 220 can store mouthwash, and the volume of the first water tank 210 can be greater than the volume of the second water tank 220. After teeth flushing, the user can use the water flosser to spray out mouthwash for rinsing the mouth without carrying two separate sanitary products, which is highly portable. The present application only uses one water guide pipe 300 instead of two water pipes (water guide pipes) as in the background art, and the structure is relatively simple and the space allocation is more reasonable. The station switching process of the rotary valve 100 does not wear the water guide pipe 300, making the water flosser strong and durable.

[0060] In one embodiment of the present application, see Figure 5 A first one-way valve 411 is provided between the water diversion pipe 300 and the pressure chamber 410, and a second one-way valve 412 is provided between the pressure chamber 410 and the ejection port 500. The second one-way valve 412 may be a duckbill valve.

[0061] In one embodiment of the present application, see Figure 3 The double water tank water flosser may include a battery 610 and a motor 620. The battery 610 is connected to the motor 620, and the output shaft of the motor 620 is connected to the pump assembly 400 to achieve the pumping of the liquid.

[0062] In one embodiment of the present application, see Figure 5 , the pump assembly 400 may include a gear shaft 420, an eccentric sleeve 430 and a transmission rod 440. The eccentric sleeve 430 is fixedly connected to the gear shaft 420, one end of the transmission rod 440 is sleeved on the eccentric sleeve 430, and the other end of the transmission rod is connected to the diaphragm 450, and the diaphragm 450 forms one side of the pressure chamber 410. Its working principle may be: the gear shaft 420 is driven by the motor 620 to drive the eccentric sleeve 430 to rotate, and the transmission rod 440 and the eccentric sleeve 430 form a cam mechanism to drive the transmission rod 440 to reciprocate. When the transmission rod 440 moves upward, the liquid in the pressure chamber 410 is pumped out of the ejection port 500. When the transmission rod 440 moves downward, the liquid in the first water tank 210 or the second water tank 220 is pumped into the pressure chamber 410.

[0063] Further, the pump assembly 400 may include a transmission gear 460, to which the output shaft of the motor 620 is connected, and the transmission gear 460 is meshed with the gear 421 of the gear shaft 420 to drive the gear shaft 420 to rotate. The transmission gear 460 and the gear 421 of the gear shaft 420 may be bevel gears, and their axes intersect.

[0064] In one embodiment of the present application, see Figure 4 A first liquid replenishing port 211 is disposed on the side of the first water tank 210, and a second liquid replenishing port 221 is disposed on the side of the second water tank 220. The corresponding liquid can be replenished into each water tank through each liquid replenishing port.

[0065] In one embodiment of the present application, see Figure 4 , the first water tank 210 is located at the lower side of the second water tank 220.

[0066] The above is a preferred embodiment of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A rotary valve for a water flosser, characterized in that: include: A valve body (140), the valve body (140) comprising a main portion (141) and a first inlet portion (120), a second inlet portion (130) and an outlet portion (110) extending from the main portion (141), the first inlet portion (120) and the second inlet portion (130) being located on a circumferential surface of the main portion (141), and the first inlet portion (120) and the second inlet portion (130) being located at the same position in the circumferential direction of the main portion (141) and being arranged side by side in the axial direction; A valve core (150), the valve core (150) comprising a first sealing portion (151) and a second sealing portion (152) arranged on its circumferential surface, the first sealing portion (151) being used to block the first inlet portion (120), the second sealing portion (152) being used to block the second inlet portion (130), the first sealing portion (151) and the second sealing portion (152) being staggered in both the circumferential direction and the axial direction of the circumferential surface of the valve core (150) so that the valve core (150) selectively and completely blocks one of the first inlet portion (120) and the second inlet portion (130).

2. The rotary valve for a dental flosser according to claim 1, characterized in that: The first sealing portion (151) and the second sealing portion (152) differ by 60° to 120° in the circumferential direction of the circumferential surface of the valve core (150). The valve core (150) can simultaneously block a portion of the interface between the first inlet portion (120) and the main portion (141) and a portion of the interface between the second inlet portion (130) and the main portion (141), so that the liquid in the first inlet portion (120) and the liquid in the second inlet portion (130) can enter the valve body (140) at the same time.

3. The rotary valve for a dental flosser according to claim 1, characterized in that: The first inlet portion (120) and the second inlet portion (130) are located at the bottom of the valve body (140).

4. The rotary valve for a dental flosser according to claim 1, characterized in that: The first sealing portion (151) and the second sealing portion (152) are made of silicone.

5. The rotary valve for a dental flosser according to claim 1, characterized in that: Shaft shoulders (153) are provided at both axial ends of the valve core (150), and the shaft shoulders (153) abut against the inner wall surface of the main part (141), so that the axes of the valve core (150) and the main part (141) coincide with each other.

6. The rotary valve for a dental flosser according to claim 1, characterized in that: The end of the valve core (150) is connected to a hand wheel (154).

7. A double water tank water flosser, characterized in that: include: The rotary valve for a dental flosser according to any one of claims 1 to 6; A first water tank (210), the first inlet portion (120) being connected to the first water tank (210); a second water tank (220), the second inlet portion (130) being connected to the second water tank (220); a water diversion pipe (300), one end of the water diversion pipe (300) being connected to the outlet portion (110); A pump assembly (400), the pump assembly (400) being connected to the other end of the water diversion pipe (300) and the spray outlet (500) of the water flosser; A nozzle (510), wherein the nozzle (510) is connected to the ejection outlet (500).

8. The double-tank oral irrigator according to claim 7, characterized in that: The pump assembly (400) comprises a pressure chamber (410), one end of the pressure chamber (410) is connected to the water diversion pipe (300) and introduces the liquid in the rotary valve (100) into the pressure chamber (410), and a first one-way valve (411) is provided between the water diversion pipe (300) and the pressure chamber (410). The other end of the pressure chamber (410) is connected to the spray outlet (500) and allows the liquid in the pressure chamber (410) to be sprayed out of the water flosser through the spray outlet (500); a second one-way valve (412) is provided between the pressure chamber (410) and the spray outlet (500).

9. The double-tank oral irrigator according to claim 8, characterized in that: The pump assembly (400) comprises: Gear shaft (420); An eccentric shaft sleeve (430), wherein the eccentric shaft sleeve (430) is fixedly connected to the gear shaft (420); A transmission rod (440), one end of which is sleeved on the eccentric shaft sleeve (430), and the other end of which is connected to a diaphragm (450), and the diaphragm (450) forms one side of the pressure chamber (410).

10. The double-tank oral irrigator according to claim 7, characterized in that: The first water tank (210) and the second water tank (220) are respectively provided with a liquid replenishing port.

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