CN214857700U - Multifunctional tooth washing device nozzle structure and tooth washing device composed of same - Google Patents
Multifunctional tooth washing device nozzle structure and tooth washing device composed of same Download PDFInfo
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- CN214857700U CN214857700U CN202022196701.0U CN202022196701U CN214857700U CN 214857700 U CN214857700 U CN 214857700U CN 202022196701 U CN202022196701 U CN 202022196701U CN 214857700 U CN214857700 U CN 214857700U
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- water
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/02—Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication
Abstract
A multifunctional tooth washing device spray head structure and a tooth washing device composed of the same are provided, wherein the spray head structure is composed of a spray head inner core (1) and a spray head outer shell (2); the middle part of the end surface of one end part of the nozzle inner core (1) is concave to form a water collecting cavity (11), a plurality of tangential water inlet flow channels (12) are arranged on the periphery of the water collecting cavity (11), and a columnar water inlet (13) is arranged in the center of the water collecting cavity (11); a first flow channel (14) is arranged on the nozzle inner core (1), one end of the first flow channel (14) is communicated with the columnar water inlet (13), and the other end of the first flow channel (14) is used as a columnar water interface (15); the nozzle inner core (1) is also provided with a second flow passage (16), one end of the second flow passage is communicated with each tangential water inlet flow passage (12), and the other end of the second flow passage is used as an umbrella-shaped water interface (17); the outer shell (2) of the spray head is circumferentially provided with a water inlet (22) corresponding to the outer peripheral surface of the inner core (1) of the spray head, and the water inlet (22) is in butt joint with the columnar water connector (15) and the umbrella-shaped water connector (17) in a one-to-two switching manner.
Description
Technical Field
The utility model relates to an oral cavity cleaning appliance, in particular to a household tooth washing device.
Background
A tooth washing device, also called as a tooth rinsing device, is a relatively new oral cavity cleaning device, and is a necessary sanitary article for many families in Europe and America. In recent years, with the improvement of living standard, the tooth washing device gradually enters more and more Chinese families.
The gingival sulcus and crevices are the two least easily cleaned areas and studies have indicated that "as many as 40% of the tooth surface cannot be cleaned with a toothbrush". Although flossing (or toothpicks) can remove deposits from tooth surfaces, microscopically rough tooth surfaces can remain unclean, bacteria can grow with only a very thin film of nutrients, and the deleterious effects of residual films of dirt remain. The pressure water flow which not only has strong force for destroying decay but also can drill a seam hole is the most ideal oral cavity cleaning mode in principle. According to the research of the American organization, the pressure water column can be flushed into the gingival sulcus to flush to the depth of 50-90%, and the pressure water column not only can clean various crevice holes and convex-concave-convex surfaces, but also can achieve the effect of microscopic thorough cleaning instead of macroscopic rough cleaning. The tooth washing device has the function of cleaning the oral cavity of teeth, and the water flow has the function of pressing the gum, promotes the blood circulation of the gum, enhances the disease resistance of local tissues and can eliminate halitosis caused by poor oral hygiene.
The water-washing device is generally composed of a water tank, a water pump and a nozzle, i.e. the water pump pumps water from the water tank and the water is sprayed out through the nozzle to form a high-speed water column. Functionally, the basic function is to form columnar water flow to wash gingival sulcus and slits, but the single columnar water flow has overlarge impact force on gingiva and tongue coating, too small washing area and insufficient comfort in use. Therefore, a nozzle capable of switching a water spraying mode needs to be developed at present, and the application range and the versatility of the tooth washing device are expanded.
Disclosure of Invention
An object of the utility model is to provide a multi-functional water toothpick shower nozzle structure and water toothpick of constituteing thereof to increase the function that rivers change and switch.
In order to achieve the above object, the utility model discloses a technical scheme of shower nozzle structure be: a multifunctional tooth washing device spray head structure comprises a spray head inner core and a spray head outer shell;
the main body of the spray head inner core is a rotating body with an axial lead, and the spray head inner core is arranged in the spray head shell by taking the axial lead as a rotating center; the middle part of the end face of one end part of the sprayer inner core is recessed to form a water collecting cavity, a plurality of tangential water inlet flow passages are arranged on the end face of the sprayer inner core around the water collecting cavity in a rotating and symmetrical mode around the axis, and acute angles are formed between the tangential water inlet flow passages and the radial direction of the sprayer inner core main body; the inner end of the tangential water inlet flow channel is communicated with the water collecting cavity; a columnar water inlet is formed in the center of the water collecting cavity; a first flow channel is arranged on the nozzle inner core, one end of the first flow channel is communicated with the columnar water inlet, and the other end of the first flow channel is positioned on the peripheral surface of the nozzle inner core as a columnar water interface; the nozzle inner core is also provided with a second flow passage, one end of the second flow passage is communicated with the outer end of each tangential water inlet flow passage, and the other end of the second flow passage is also positioned on the peripheral surface of the nozzle inner core as an umbrella-shaped water interface; the columnar water connectors and the umbrella-shaped water connectors are arranged in a row in the circumferential direction of the nozzle inner core;
a water spraying hole is formed in the end part of the sprayer shell corresponding to the water collecting cavity and communicated with the water collecting cavity; and a water inlet is arranged on the circumferential surface of the sprayer shell corresponding to the sprayer inner core, and the water inlet is in butt joint with the columnar water connector and the umbrella-shaped water connector in a one-to-two switching manner.
In the above scheme, the water spray hole consists of a straight hole section and a conical hole section, and the straight hole section is connected with the water collecting cavity through the conical hole section; and the water spraying hole and the columnar water inlet are coaxial, and the diameter of the straight hole section is larger than the caliber of the columnar water inlet.
In the above scheme, the first flow channel is composed of a radial channel formed along a radial direction and an axial channel formed along an axial direction, an outer port of the radial channel is the columnar water port, and the axial channel and the columnar water inlet are coaxially arranged; and the diameter of the radial passage is larger than the diameter of the axial passage.
In the above scheme, the second flow channel is a groove formed in the outer peripheral surface of the nozzle inner core, and a notch of the groove in the outer peripheral surface of the nozzle inner core is the umbrella-shaped water interface.
In the scheme, a stirring part protrudes out of the periphery of the nozzle inner core in the radial direction; an avoiding elongated slot is formed in the sprayer shell corresponding to the shifting part, and the shifting part extends out of the avoiding elongated slot.
Furthermore, the spray head outer shell consists of a cylindrical body and an end cover, a sealing ring is annularly arranged on the periphery of one end of the spray head inner core, which is opposite to the end provided with the water collecting cavity, and the spray head inner core is in sealing fit with the inner wall of the cylindrical body through the sealing ring; the end cover sealing cover is also arranged on one end opposite to the water collecting cavity; the stirring part is also arranged at one end opposite to the water collecting cavity and is positioned between the position of the inner core of the spray head where the sealing ring is arranged and the end cover.
In order to achieve the above purpose, the utility model adopts the technical proposal that: a tooth washing device comprises a spray head and a water pump, wherein the spray head is provided with a spray head structure, and the spray head structure consists of a spray head inner core and a spray head outer shell; the main body of the spray head inner core is a rotating body with an axial lead, and the spray head inner core is arranged in the spray head shell by taking the axial lead as a rotating center; the middle part of the end face of one end part of the sprayer inner core is recessed to form a water collecting cavity, a plurality of tangential water inlet flow passages are arranged on the end face of the sprayer inner core around the water collecting cavity in a rotating and symmetrical mode around the axis, and acute angles are formed between the tangential water inlet flow passages and the radial direction of the sprayer inner core main body; the inner end of the tangential water inlet flow channel is communicated with the water collecting cavity; a columnar water inlet is formed in the center of the water collecting cavity; a first flow channel is arranged on the nozzle inner core, one end of the first flow channel is communicated with the columnar water inlet, and the other end of the first flow channel is positioned on the peripheral surface of the nozzle inner core as a columnar water interface; the nozzle inner core is also provided with a second flow passage, one end of the second flow passage is communicated with the outer end of each tangential water inlet flow passage, and the other end of the second flow passage is also positioned on the peripheral surface of the nozzle inner core as an umbrella-shaped water interface; the columnar water connectors and the umbrella-shaped water connectors are arranged in a row in the circumferential direction of the nozzle inner core; a water spraying hole is formed in the end part of the sprayer shell corresponding to the water collecting cavity and communicated with the water collecting cavity; and a water inlet is arranged on the circumferential surface of the sprayer shell corresponding to the sprayer inner core, and the water inlet is in butt joint with the columnar water connector and the umbrella-shaped water connector in a one-to-two switching manner.
In the above scheme, the water spray hole consists of a straight hole section and a conical hole section, and the straight hole section is connected with the water collecting cavity through the conical hole section; and the water spraying hole and the columnar water inlet are coaxial, and the diameter of the straight hole section is larger than the caliber of the columnar water inlet.
In the above scheme, the first flow channel is composed of a radial channel formed along a radial direction and an axial channel formed along an axial direction, an outer port of the radial channel is the columnar water port, and the axial channel and the columnar water inlet are coaxially arranged; and the diameter of the radial passage is larger than the diameter of the axial passage.
In the above scheme, the second flow channel is a groove formed in the outer peripheral surface of the nozzle inner core, and a notch of the groove in the outer peripheral surface of the nozzle inner core is the umbrella-shaped water interface.
The utility model discloses during the use, probably switch the water spray form through rotating the shower nozzle inner core: when the water inlet is aligned with the columnar water interface, high-pressure water is led to the columnar water inlet through the first flow channel to form a linear water column and is directly sprayed out through the water spraying hole to flush and wash gingival sulcus and dental crevice; when the water inlet is aligned with the umbrella-shaped water interface, high-pressure water enters the second flow channel, is sprayed into the water collecting cavity through the thin tangential water inlet flow channels to form a vortex in the water collecting cavity, and is sprayed out through the water spraying holes to form umbrella-shaped water spray. The utility model discloses increased the rivers form switching function of the umbrella-type splash that erodees tongue fur and gum, satisfied the user and washed the demand of tongue fur and gum, market prospect is good.
Drawings
Fig. 1 is an exploded perspective view of a structure of a nozzle according to an embodiment of the present invention;
FIG. 2 is a schematic view of a spray head structure in a linear water column state according to an embodiment of the present invention;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic view of the nozzle structure of the embodiment of the present invention in the full-section of the umbrella-shaped spray state;
FIG. 5 is a left side schematic view of FIG. 2;
fig. 6 is a schematic front view of a nozzle inner core of the nozzle structure according to an embodiment of the present invention;
FIG. 7 is a schematic bottom view of FIG. 6;
fig. 8 is a right side view of fig. 6.
In the above drawings: 1. a nozzle inner core; 11. a water collecting cavity; 12. a tangential water inlet flow channel; 13. a columnar water inlet; 14. a first flow passage; 141. a radial channel; 142. an axial channel; 15. a columnar water interface; 16. a second flow passage; 17. an umbrella-shaped water port; 18. a toggle part; 19. a seal ring; 2. a nozzle housing; 21. a water spray hole; 211. a straight hole section; 212. a tapered bore section; 22. a water inlet; 23. avoiding the long groove; 24. a cylindrical body; 25. and (4) end covers. 3. And (4) a spray head.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the first embodiment is as follows: referring to FIGS. 1-8:
a multifunctional tooth washing device nozzle structure is shown in figures 1-8 and comprises a nozzle inner core 1 and a nozzle outer shell 2. The main body of the spray head inner core 1 is a rotating body with an axis, and the spray head inner core 1 is rotatably arranged in the spray head shell 2 by taking the axis as a rotating center.
Referring to fig. 1-8, the middle of the end surface of one end of the nozzle inner core 1 is recessed to form a water collecting cavity 11, and a plurality of tangential water inlet channels 12 are arranged on the end surface of the nozzle inner core 1 around the water collecting cavity 11, the plurality of tangential water inlet channels 12 are rotationally and symmetrically arranged around the axis, and an acute angle is formed between the tangential water inlet channels 12 and the radial direction of the main body of the nozzle inner core 1. The inner end of the tangential water inlet flow passage 12 is communicated with the water collecting cavity 11. A columnar water inlet 13 is formed in the center of the water collecting cavity 11; a first flow channel 14 is arranged on the nozzle inner core 1, one end of the first flow channel 14 is communicated with the columnar water inlet 13, and the other end of the first flow channel 14 is positioned on the peripheral surface of the nozzle inner core 1 as a columnar water interface 15; moreover, the nozzle inner core 1 is also provided with a second flow channel 16, one end of the second flow channel 16 is communicated with the outer ends of the tangential water inlet flow channels 12, and the other end of the second flow channel 16 is also positioned on the peripheral surface of the nozzle inner core 1 as an umbrella-shaped water interface 17; the columnar water connectors 15 and the umbrella-shaped water connectors 17 are arranged in a row in the circumferential direction of the nozzle inner core 1;
referring to fig. 1-8, a water spraying hole 21 is formed at the end of the nozzle housing 2 corresponding to the water collecting cavity 11, and the water spraying hole 21 is communicated with the water collecting cavity 11; and a water inlet 22 is arranged on the circumferential surface of the sprayer shell 2 corresponding to the sprayer inner core 1, and the water inlet 22 is in butt joint with the columnar water connector 15 and the umbrella-shaped water connector 17 in a one-to-two switching manner.
Specifically, referring to fig. 1-8, the water spraying hole 21 is composed of a straight hole section 211 and a tapered hole section 212, and the straight hole section 211 is connected to the water collecting cavity 11 through the tapered hole section 212; the water spraying hole 21 and the columnar water inlet 13 are coaxial, and the diameter of the straight hole section 211 is larger than the caliber of the columnar water inlet 13.
Specifically, referring to fig. 1 to 8, the first flow channel 14 is composed of a radial channel 141 opened along a radial direction and an axial channel 142 opened along an axial direction, an outer port of the radial channel 141 is the cylindrical water inlet 15, and the axial channel 142 and the cylindrical water inlet 13 are coaxially arranged; also, the diameter of the radial passage 141 is larger than the diameter of the axial passage 142.
Specifically, referring to fig. 1 to 8, the second flow channel 16 is a groove formed on the outer circumferential surface of the nozzle core 1, and a notch of the groove on the outer circumferential surface of the nozzle core 1 is the umbrella-shaped water connection 17.
In order to facilitate the operation, referring to fig. 1-8, a toggle part 18 is protruded on the periphery of the nozzle inner core 1 in the radial direction; an avoidance elongated slot 23 is formed in the sprayer housing 2 corresponding to the toggle part 18, and the toggle part 18 extends out of the avoidance elongated slot. The sprayer shell 2 consists of a cylindrical body 24 and an end cover 25, a sealing ring 19 is annularly arranged on the periphery of one end of the sprayer inner core 1 opposite to the end provided with the water collecting cavity 11, and the sprayer inner core 1 is in sealing fit with the inner wall of the cylindrical body 24 through the sealing ring 19; the end cover 25 is also arranged on the end opposite to the water collecting cavity 11; the toggle part 18 is also arranged at one end opposite to the end provided with the water collecting cavity 11 and is positioned between the position provided with the sealing ring 19 of the nozzle inner core 1 and the end cover 25. So as to achieve the sealing effect and prevent water leakage.
When this embodiment shower nozzle structure used, probably switch the water spray form through rotating shower nozzle inner core 1: when the water inlet 22 is aligned with the columnar water interface 15, as shown in fig. 2 and 3, high-pressure water is led to the columnar water inlet 13 through the first flow channel 14 to form a linear water column and is directly sprayed out through the water spraying holes 21 to flush and wash gingival sulcus and dental crevice; when the water inlet 22 is aligned with the umbrella-shaped water port 17, high-pressure water enters the second flow channel 16, is sprayed into the water collecting cavity 11 through the thin tangential water inlet flow channels 12 to form a vortex in the water collecting cavity 11, and is sprayed out through the water spraying holes 21 to form umbrella-shaped water flowers. The utility model discloses increased the rivers form switching function of the umbrella-type splash that erodees tongue fur and gum, satisfied the user and washed the demand of tongue fur and gum, market prospect is good.
A tooth washing device comprises a spray head 3, a water pump, a water tank, a shell and the like, wherein the spray head is provided with the spray head structure, so that the tooth washing device also has the functional effects.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a multi-functional water toothpick shower nozzle structure which characterized in that: consists of a nozzle inner core (1) and a nozzle outer shell (2);
the main body of the spray head inner core (1) is a rotating body with an axial lead, and the spray head inner core (1) is rotationally arranged in the spray head shell (2) by taking the axial lead as a rotating center; the middle part of the end face of one end part of the sprayer inner core (1) is recessed to form a water collecting cavity (11), a plurality of tangential water inlet channels (12) are arranged on the end face of the sprayer inner core (1) around the water collecting cavity (11), the tangential water inlet channels (12) are rotationally and symmetrically arranged around the axis, and an acute angle is formed between the tangential water inlet channels (12) and the radial direction of the sprayer inner core (1) main body; the inner end of the tangential water inlet flow channel (12) is communicated with the water collecting cavity (11); a columnar water inlet (13) is formed in the center of the water collecting cavity (11); a first flow channel (14) is arranged on the nozzle inner core (1), one end of the first flow channel (14) is communicated with the columnar water inlet (13), and the other end of the first flow channel (14) is positioned on the peripheral surface of the nozzle inner core (1) as a columnar water interface (15); moreover, a second flow passage (16) is also arranged on the nozzle inner core (1), one end of the second flow passage (16) is communicated with the outer ends of the tangential water inlet flow passages (12), and the other end of the second flow passage (16) is also positioned on the peripheral surface of the nozzle inner core (1) as an umbrella-shaped water interface (17); the columnar water connectors (15) and the umbrella-shaped water connectors (17) are arranged in rows in the circumferential direction of the sprayer inner core (1);
a water spray hole (21) is formed in the end part of the spray head shell (2) corresponding to the water collecting cavity (11), and the water spray hole (21) is communicated with the water collecting cavity (11); and the outer shell (2) of the spray head is provided with a water inlet (22) corresponding to the peripheral surface of the inner core (1) of the spray head in the circumferential direction, and the water inlet (22) is in butt joint with the columnar water connector (15) and the umbrella-shaped water connector (17) in a one-to-two switching manner.
2. The multi-functional water toothpick nozzle structure of claim 1 wherein: the water spray hole (21) consists of a straight hole section (211) and a conical hole section (212), and the straight hole section (211) is connected with the water collecting cavity (11) through the conical hole section (212); and the water spraying hole (21) and the columnar water inlet (13) are coaxial, and the diameter of the straight hole section (211) is larger than the caliber of the columnar water inlet (13).
3. The multi-functional water toothpick nozzle structure of claim 1 wherein: the first flow channel (14) consists of a radial channel (141) which is arranged along the radial direction and an axial channel (142) which is arranged along the axial direction, the outer port of the radial channel (141) is the columnar water interface (15), and the axial channel (142) and the columnar water inlet (13) are arranged coaxially; the diameter of the radial passage (141) is larger than that of the axial passage (142).
4. The multi-functional dental prophylaxis nozzle structure according to any one of claims 1 to 3, wherein: the second flow channel (16) is a groove arranged on the outer peripheral surface of the nozzle inner core (1), and a notch of the groove on the peripheral surface of the nozzle inner core (1) is the umbrella-shaped water interface (17).
5. The multi-functional water toothpick nozzle structure of claim 1 wherein: a toggle part (18) protrudes from the periphery of the nozzle inner core (1) in the radial direction; an avoidance elongated slot (23) is formed in the sprayer housing (2) corresponding to the toggle part (18), and the toggle part (18) extends out of the avoidance elongated slot.
6. The multi-functional water toothpick nozzle structure of claim 5 wherein: the sprayer shell (2) consists of a cylindrical body (24) and an end cover (25), a sealing ring (19) is annularly arranged on the periphery of one end of the sprayer inner core (1) opposite to the end with the water collecting cavity (11), and the sprayer inner core (1) is in sealing fit with the inner wall of the cylindrical body (24) through the sealing ring (19); the end cover (25) is also arranged on the end opposite to the end provided with the water collecting cavity (11); the toggle part (18) is also arranged at one end back to the water collecting cavity (11) and is positioned between the position of the nozzle inner core (1) where the sealing ring (19) is arranged and the end cover (25).
7. The utility model provides a tooth washing device, includes shower nozzle and water pump, its characterized in that: the sprinkler (3) has the sprinkler structure of claim 1.
8. The dental prophylaxis device of claim 7, wherein: the water spray hole (21) consists of a straight hole section (211) and a conical hole section (212), and the straight hole section (211) is connected with the water collecting cavity (11) through the conical hole section (212); and the water spraying hole (21) and the columnar water inlet (13) are coaxial, and the diameter of the straight hole section (211) is larger than the caliber of the columnar water inlet (13).
9. The dental prophylaxis device of claim 7, wherein: the first flow channel (14) consists of a radial channel (141) which is arranged along the radial direction and an axial channel (142) which is arranged along the axial direction, the outer port of the radial channel (141) is the columnar water interface (15), and the axial channel (142) and the columnar water inlet (13) are arranged coaxially; the diameter of the radial passage (141) is larger than that of the axial passage (142).
10. The dental rinser of one of claims 7-9, further characterized by: the second flow channel (16) is a groove arranged on the outer peripheral surface of the nozzle inner core (1), and a notch of the groove on the peripheral surface of the nozzle inner core (1) is the umbrella-shaped water interface (17).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022196701.0U CN214857700U (en) | 2020-09-30 | 2020-09-30 | Multifunctional tooth washing device nozzle structure and tooth washing device composed of same |
| PCT/CN2021/121731 WO2022068879A1 (en) | 2020-09-30 | 2021-09-29 | Nozzle structure of multifunctional water flosser, and water flosser consisting of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022196701.0U CN214857700U (en) | 2020-09-30 | 2020-09-30 | Multifunctional tooth washing device nozzle structure and tooth washing device composed of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214857700U true CN214857700U (en) | 2021-11-26 |
Family
ID=78885668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022196701.0U Active CN214857700U (en) | 2020-09-30 | 2020-09-30 | Multifunctional tooth washing device nozzle structure and tooth washing device composed of same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214857700U (en) |
| WO (1) | WO2022068879A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2693191Y (en) * | 2004-03-24 | 2005-04-20 | 上海白猫股份有限公司 | Water toothpick current regulating device |
| CN2899728Y (en) * | 2006-04-28 | 2007-05-16 | 沈宗元 | Oral and tooth cleaner |
| CN100441787C (en) * | 2006-06-09 | 2008-12-10 | 重庆大学 | Multifunction water-saving spray head |
| EP2727556A1 (en) * | 2012-11-02 | 2014-05-07 | Braun GmbH | Oral irrigator |
| JP6875986B2 (en) * | 2014-10-29 | 2021-05-26 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Adjustable assemblies and nozzles for supplying various liquid / air outflow patterns |
| CN209393368U (en) * | 2018-12-14 | 2019-09-17 | 李联福 | A kind of kitchen and bath's faucet shower with switching device |
-
2020
- 2020-09-30 CN CN202022196701.0U patent/CN214857700U/en active Active
-
2021
- 2021-09-29 WO PCT/CN2021/121731 patent/WO2022068879A1/en unknown
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| Publication number | Publication date |
|---|---|
| WO2022068879A1 (en) | 2022-04-07 |
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