A brush head and an oral care device

Abstract

The present application relates to oral cavity cleaning tool technical field, disclose a brush head and oral care equipment, the brush head is applied to oral care equipment, the oral care equipment has a liquid storage tank, the brush head includes brush head main part and brush, the brush head main part is equipped with a spray outlet, first flow channel and second flow channel, the first flow channel is used for receiving the liquid of the liquid storage tank and conveying the liquid to the spray outlet, the first flow channel is communicated with the spray outlet, the second flow channel is used for conveying gas to the direction of the spray outlet, the second flow channel has a gas outlet, the gas outlet is communicated with the first flow channel and is towards the spray outlet, the brush is arranged in the brush head main part, the brush is located with the spray outlet in the same side of the brush head main part, the brush head and oral care equipment of the present application embodiment, the water mist impact force formed by the mixing of liquid and gas is larger, and the acting area is larger, and the cleaning effect of electric toothbrush is better.

Description

Technical Field

[0001] This invention relates to the field of oral hygiene tools, and more particularly to a brush head and oral care device. Background Technology

[0002] As people's demand for the cleaning power of oral care devices (such as electric toothbrushes) continues to increase, some electric toothbrushes now offer a liquid dispensing function in addition to the high-frequency vibration of the brush head for oral cleaning. Specifically, this is achieved by placing a hollow tube in the brush head to deliver liquid, which then flows out through the liquid outlet in the brush head, thereby enhancing the cleaning power of the electric toothbrush.

[0003] However, the impact force of the flowing liquid is relatively small, and the area of ​​contact is also small, resulting in a poor cleaning effect for electric toothbrushes. Summary of the Invention

[0004] This invention discloses a brush head and oral care device. The water mist formed by the mixture of liquid and gas has a large impact force and a large effective area, resulting in a better cleaning effect for the electric toothbrush.

[0005] In a first aspect, embodiments of the present invention disclose a brush head applied to an oral care device. The oral care device has a liquid storage tank. The brush head includes a brush head body and bristles. The brush head body is provided with a spray outlet, a first flow channel, and a second flow channel. The first flow channel is used to receive liquid from the liquid storage tank and transport the liquid towards the spray outlet. The first flow channel is connected to the spray outlet. The second flow channel is used to transport gas towards the spray outlet. The second flow channel has an air outlet, which is connected to the first flow channel and faces the spray outlet. The bristles are disposed on the brush head body, and the bristles and the spray outlet are located on the same side of the brush head body.

[0006] As an optional implementation, in this embodiment of the invention, the brush head body is provided with a mixing chamber, the nozzle is connected to the mixing chamber, the first flow channel is connected to the mixing chamber for conveying the liquid to the mixing chamber, and the second flow channel is connected to the mixing chamber for conveying the gas to the mixing chamber.

[0007] As an optional implementation, in this embodiment of the invention, the first flow channel has a liquid outlet, which is connected to the mixing chamber, and the gas outlet is connected to the mixing chamber, wherein the diameter of the liquid outlet is larger than the diameter of the gas outlet.

[0008] As an optional implementation, in this embodiment of the invention, the cross-section of the mixing chamber is set to gradually decrease from the first flow channel toward the nozzle.

[0009] As an optional implementation, in this embodiment of the invention, the inner wall of the mixing chamber is configured as an arc surface.

[0010] As an optional implementation, in this embodiment of the invention, the brush head body includes a brush plate and a brush rod, the bristles and the spray outlet are located on the same side of the brush plate, the brush rod is connected to the brush plate, and the first flow channel extends from the end of the brush rod away from the brush plate to the brush plate.

[0011] As an optional implementation, in this embodiment of the invention, the first flow channel has a liquid inlet and a liquid outlet connected to each other, and the cross-section of the first flow channel is gradually reduced from the liquid inlet to the liquid outlet.

[0012] As an optional implementation, in this embodiment of the invention, the brush head body includes a brush plate and a brush rod, the bristles and the spray outlet are located on the same side of the brush plate, the brush rod includes a main body and a protrusion, the main body is connected to the brush plate, the second flow channel is located on the main body, the protrusion is located on the side of the main body away from the brush plate, and the first flow channel is located on the protrusion.

[0013] Secondly, embodiments of the present invention disclose an oral care device, including a main unit and a brush head as described in the first aspect. The main unit includes a handle, a liquid storage tank, and a pump body. The handle is connected to the end of the brush head body away from the bristles. The liquid storage tank is disposed in the handle and is used to store liquid. The liquid storage tank is connected to a first flow channel to provide the liquid to the first flow channel. The pump body is disposed inside the handle and is connected to a second flow channel to pump gas into the second flow channel.

[0014] As an optional implementation, in this embodiment of the invention, the liquid storage tank has a liquid injection port, and the main unit further includes a soft rubber interface. The soft rubber interface is disposed at the liquid injection port, and the soft rubber interface connects the liquid storage tank and the first flow channel. The first flow channel is detachably connected to the soft rubber interface.

[0015] Compared with the prior art, the embodiments of the present invention have at least the following beneficial effects:

[0016] In this embodiment of the invention, the brush head body is equipped with a spray outlet, a first flow channel, and a second flow channel. The first flow channel is connected to the spray outlet to receive liquid from the reservoir of the oral care device to which the brush head is applied and to deliver the liquid to the spray outlet. The air outlet of the second flow channel is connected to the first flow channel and faces the spray outlet to deliver gas towards the spray outlet. In this way, the liquid and gas can mix at the spray outlet to form a water mist, thereby cleaning the oral cavity. Simultaneously, the brush head body is equipped with bristles, and the bristles and the spray outlet are located on the same side of the brush head body. When the bristles clean the oral cavity, the water mist sprayed from the spray outlet can clean the same area of ​​the oral cavity, improving the cleaning power of the electric toothbrush. Furthermore, the water mist formed by the mixture of liquid and gas has a large impact force and a large effective area, resulting in better cleaning effect for oral care devices using this brush head. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a brush head disclosed in Embodiment 1 of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of a brush head disclosed in Embodiment 1 of the present invention;

[0020] Figure 3 yes Figure 2 Enlarged structural diagram at point I;

[0021] Figure 4 This is a schematic diagram of the structure of an oral care device disclosed in Embodiment 2 of the present invention;

[0022] Figure 5 This is an exploded structural diagram of an oral care device disclosed in Embodiment 2 of the present invention;

[0023] Figure 6 This is a cross-sectional structural diagram of an oral care device disclosed in Embodiment 2 of the present invention.

[0024] Explanation of main figure symbols

[0025] 100. Brush head; 10. Brush head body; 11. Spray outlet; 12. First flow channel; 12a. Liquid outlet; 12b. Liquid inlet; 13. Second flow channel; 13a. Air outlet; 14. Mixing chamber; 14a. Inner wall; 101. Brush plate; 102. Brush handle; 102a. Main body; 102b. Protrusion; 20. Brush bristles; 200. Oral care device; 21. Main unit; 211. Handle; 212. Liquid reservoir; 212a. Liquid inlet; 213. Pump body; 22. Soft rubber connector. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0029] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0030] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0031] This invention discloses a brush head and oral care device. The water mist formed by the mixture of liquid and gas has a large impact force and a large effective area, resulting in a better cleaning effect for the electric toothbrush.

[0032] Example 1

[0033] Please refer to the following: Figures 1 to 3 This is a schematic diagram of the structure of a brush head 100 provided in Embodiment 1 of the present invention. The brush head 100 is applied to an oral care device, which has a liquid storage tank. The brush head 100 includes a brush head body 10 and bristles 20. The brush head body 10 is provided with a spray outlet 11, a first flow channel 12 and a second flow channel 13. The first flow channel 12 is used to receive liquid from the liquid storage tank and deliver liquid to the spray outlet 11. The first flow channel 12 is connected to the spray outlet 11. The second flow channel 13 is used to deliver gas to the spray outlet 11. The second flow channel 13 has an air outlet 13a, which is connected to the first flow channel 12 and faces the spray outlet 11. The bristles 20 are disposed on the brush head body 10, and the bristles 20 and the spray outlet 11 are located on the same side of the brush head body 10.

[0034] The liquid can be a cleaning solution or water, and can be selected according to different usage needs. This embodiment does not make a specific limitation on this.

[0035] In this embodiment, the brush head body 10 is equipped with a spray outlet 11, a first flow channel 12, and a second flow channel 13. The first flow channel 12 is connected to the spray outlet 11 to receive liquid from the reservoir of the oral care device to which the brush head 100 is applied and to deliver the liquid to the spray outlet 11. The air outlet 13a of the second flow channel 13 is connected to the first flow channel 12 and faces the spray outlet 11 to deliver gas towards the spray outlet 11. In this way, the liquid and gas can mix at the spray outlet 11 to form a water mist, thereby cleaning the oral cavity. At the same time, the brush head body 10 is equipped with bristles 20, and the bristles 20 and the spray outlet 11 are located on the same side of the brush head body 10. When the bristles 20 clean the oral cavity, the water mist sprayed from the spray outlet 11 can clean the same area of ​​the oral cavity, improving the cleaning power of the electric toothbrush. Furthermore, the water mist formed by the mixture of liquid and gas has a large impact force and a large effective area, resulting in better cleaning effect for the oral care device using this brush head 100.

[0036] In some embodiments, such as Figure 3As shown, the brush head body 10 is provided with a mixing chamber 14, a spray outlet 11 connected to the mixing chamber 14, a first flow channel 12 connected to the mixing chamber 14 for supplying liquid to the mixing chamber 14, and a second flow channel 13 connected to the mixing chamber 14 for supplying gas to the mixing chamber 14. Thus, by providing a mixing chamber 14 in the brush head body 10, and utilizing the first flow channel 12 and the second flow channel 13 connected to the mixing chamber 14, the first flow channel 12 and the second flow channel 13 can respectively supply liquid and gas to the mixing chamber 14, allowing the liquid and gas to be fully mixed in the mixing chamber 14 to form a water mist, which is then sprayed out from the spray outlet 11, improving the cleaning power of the water mist.

[0037] For example, the first flow channel 12 has a liquid outlet 12a connected to the mixing chamber 14, and an air outlet 13a connected to the mixing chamber 14, with the diameter of the air outlet 13a being larger than the diameter of the liquid outlet 12a. Thus, through the connection of the liquid outlet 12a to the mixing chamber 14, the first flow channel 12 can deliver liquid to the mixing chamber 14, while through the connection of the air outlet 13a to the mixing chamber 14, the second flow channel 13 can deliver gas to the mixing chamber 14. Furthermore, the larger diameter of the liquid outlet 12a compared to the air outlet 13a ensures that the unit flow rate of the liquid flowing into the mixing chamber 14 is greater than that of the gas, guaranteeing sufficient liquid delivery to the mixing chamber 14 to mix with the gas and form a water mist.

[0038] In some embodiments, the cross-section of the mixing chamber 14 gradually decreases from the first flow channel 12 towards the nozzle 11. This gradual decrease in cross-section from the first flow channel 12 to the nozzle 11 results in a larger cross-section at the end of the mixing chamber 14 connected to the first flow channel 12 and a smaller cross-section at the end connected to the nozzle 11. This creates an overall converging shape where the cross-section of the mixing chamber 14 decreases from the first flow channel 12 to the nozzle 11, increasing the flow velocity of the water mist as it is ejected from the mixing chamber 14 to the nozzle 11, thereby enhancing the impact force of the water mist and improving its cleaning effect. Furthermore, constructing the inner wall 14a of the mixing chamber 14 as an arc surface reduces the resistance encountered by the water mist, preventing a weakening of the impact force of the water mist ejected from the nozzle 11.

[0039] For example, the inner wall 14a of the mixing chamber 14 is configured as an arc surface. In this way, by configuring the inner wall 14a of the mixing chamber 14 as an arc surface, the resistance encountered by the water mist can be reduced, and the impact force of the water mist ejected from the nozzle 11 can be reduced.

[0040] In some embodiments, such as Figure 1 and Figure 2As shown, the brush head body 10 includes a brush plate 101 and a brush handle 102. The bristles 20 and the spray nozzle 11 are located on the same side of the brush plate 101. The brush handle 102 is connected to the brush plate 101, and a first flow channel 12 extends from the end of the brush handle 102 away from the brush plate 101 to the brush plate 101. Thus, by having the bristles 20 and the spray nozzle 11 located on one side of the brush plate 101, the water mist sprayed from the spray nozzle 11 can clean the same area of ​​the mouth when the bristles 20 are cleaning, thereby improving the cleaning power of the electric toothbrush.

[0041] Optionally, the first flow channel 12 is connected to the spray outlet 11, and along the orientation direction of the spray outlet 11, the first flow channel 12 is gradually inclined and positioned closer to the brush rod 102. In this way, the first flow channel 12 extends obliquely from the end of the brush rod 102 away from the brush plate 101 to the brush plate 101 and is connected to the spray outlet 11. And along the orientation direction of the spray outlet 11, the first flow channel 12 is gradually inclined and positioned closer to the brush rod 102. The liquid in the first flow channel 12 can accelerate and flow to the spray outlet 11 from the end away from the brush plate 101 under the action of gravity, thereby increasing the liquid flow rate, the liquid impact force is greater, and the cleaning effect is better.

[0042] For example, the first flow channel 12 has a liquid inlet 12b and a liquid outlet 12a connected to each other, and the cross-section of the first flow channel 12 gradually decreases from the liquid inlet 12b to the liquid outlet 12a. In this way, by using the cross-section of the first flow channel 12 to gradually decrease from the liquid inlet 12b to the liquid outlet 12a, the flow rate of the liquid can be increased during the process of the liquid being transported from the liquid inlet 12b to the spray outlet 11, thereby increasing the impact force of the water mist formed at the spray outlet 11 and resulting in a better cleaning effect of the water mist.

[0043] In some embodiments, the brush rod 102 includes a main body 102a and a protrusion 102b. The main body 102a is connected to the brush plate 101, a second flow channel 13 is provided in the main body 102a, the protrusion 102b is provided on the side of the main body 102a away from the brush plate 101, and a first flow channel 12 is provided in the protrusion 102b. In this way, by providing the second flow channel 13 in the main body 102a and the first flow channel 12 in the protrusion 102b, the first flow channel 12 and the second flow channel 13 can be separated. When the nozzle 11 is oriented downwards, the height of the protrusion 102b located on the side of the main body 102a away from the brush plate 101 is relatively high, which can increase the flow rate of the liquid in the first flow channel 12 by utilizing gravity.

[0044] Embodiment 1 of the present invention provides a brush head 100. The brush head body 10 is provided with a spray outlet 11, a first flow channel 12, and a second flow channel 13. The first flow channel 12 is connected to the spray outlet 11 to receive liquid from the reservoir of the oral care device to which the brush head 100 is applied and to deliver the liquid to the spray outlet 11. The second flow channel 13 is connected to the spray outlet 11 to deliver gas to the spray outlet 11. Thus, the liquid and gas can mix at the spray outlet 11 to form a water mist, thereby cleaning the oral cavity. Simultaneously, the brush head body 10 is provided with bristles 20, and the bristles 20 and the spray outlet 11 are located on the same side of the brush head body 10. When the bristles 20 clean the oral cavity, the water mist sprayed from the spray outlet 11 can clean the same area of ​​the oral cavity, improving the cleaning power of the electric toothbrush. Furthermore, the water mist formed by the mixture of liquid and gas has a large impact force and a large effective area, resulting in better cleaning effect for oral care devices using this brush head 100.

[0045] Example 2

[0046] Please refer to the following: Figures 4 to 6 This is a schematic diagram of the structure of an oral care device 200 provided in Embodiment 2 of the present invention. The oral care device 200 includes a main unit 21 and a brush head 100 of Embodiment 1. The main unit 21 includes a handle 211, a liquid storage tank 212 and a pump body 213. The handle 211 is connected to the end of the brush head body 10 away from the bristles 20. The liquid storage tank 212 is disposed in the handle 211 and is used to store liquid. The liquid storage tank 212 is connected to a first flow channel 12 to provide liquid to the first flow channel 12. The pump body 213 is disposed in the handle 211 and is connected to a second flow channel 13 to pump gas into the second flow channel 13.

[0047] In this embodiment, liquid is stored in a storage tank 212, which is connected to the first flow channel 12 to raise the liquid level. The liquid can then be transported along the first flow channel 12 to the nozzle. Meanwhile, a pump body 213 is connected to the second flow channel 13, pumping gas into the second flow channel 13. The faster gas velocity facilitates the mixing of gas and liquid at the nozzle to form a water mist.

[0048] For example, such as Figure 5As shown, the liquid storage tank 212 has a liquid inlet 212a, and the main unit 21 also includes a flexible rubber interface 22. The flexible rubber interface 22 is located at the liquid inlet 212a and connects the liquid storage tank 212 and the first flow channel 12. The first flow channel 12 is detachably connected to the flexible rubber interface 22. Thus, on the one hand, by forming the liquid inlet 212a in the liquid storage tank 212, liquid can be added to the liquid storage tank 212 through the liquid inlet 212a. On the other hand, by using the flexible rubber interface 22 located at the liquid inlet 212a, the first flow channel 12 is detachably connected to the flexible rubber interface 22, realizing communication between the first flow channel 12 and the liquid storage tank 212. Furthermore, when the flexible rubber interface 22 is connected to the first flow channel 12 and the liquid inlet 212a, the flexible rubber interface 22 can adopt an interference fit to improve the connection sealing and prevent leakage.

[0049] Embodiment 2 of the present invention provides an oral care device 200, which has a better cleaning effect.

[0050] The above provides a detailed description of a brush head and oral care device disclosed in the embodiments of the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the brush head and oral care device of the present invention and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A brush head, characterized in that, Applied to oral care equipment, the oral care equipment having a liquid reservoir, the brush head comprising: A brush head body, comprising a nozzle, a first flow channel, and a second flow channel. The first flow channel receives liquid from the liquid storage tank and conveys the liquid towards the nozzle, and is connected to the nozzle. The second flow channel conveys gas towards the nozzle, and has an outlet that is connected to the first flow channel and faces the nozzle. The brush bristles are located on the brush head body and the spray outlet is located on the same side of the brush head body.

2. The brush head according to claim 1, characterized in that, The brush head body is provided with a mixing chamber, the nozzle is connected to the mixing chamber, the first flow channel is connected to the mixing chamber for delivering the liquid to the mixing chamber, and the second flow channel is connected to the mixing chamber for delivering the gas to the mixing chamber.

3. The brush head according to claim 2, characterized in that, The first flow channel has a liquid outlet connected to the mixing chamber, and an air outlet connected to the mixing chamber. The diameter of the liquid outlet is larger than the diameter of the air outlet.

4. The brush head according to claim 2, characterized in that, The cross-section of the mixing chamber gradually decreases from the first flow channel toward the nozzle.

5. The brush head according to claim 4, characterized in that, The inner wall of the mixing chamber is constructed in an arc shape.

6. The brush head according to any one of claims 1 to 5, characterized in that, The brush head body includes a brush plate and a brush rod. The brush bristles and the spray outlet are located on the same side of the brush plate. The brush rod is connected to the brush plate. The first flow channel extends from the end of the brush rod away from the brush plate to the brush plate.

7. The brush head according to any one of claims 1 to 5, characterized in that, The first flow channel has a liquid inlet and a liquid outlet that are connected to each other, and the cross-section of the first flow channel is gradually reduced from the liquid inlet to the liquid outlet.

8. The brush head according to any one of claims 1 to 5, characterized in that, The brush head body includes a brush plate and a brush rod. The brush bristles and the spray outlet are located on the same side of the brush plate. The brush rod includes a main body and a protrusion. The main body is connected to the brush plate. The second flow channel is located on the main body. The protrusion is located on the side of the main body away from the brush plate. The first flow channel is located on the protrusion.

9. An oral care device, characterized in that, The device includes a main unit and a brush head as described in any one of claims 1 to 8. The main unit includes a handle, a liquid reservoir, and a pump body. The handle is connected to the end of the brush head body away from the bristles. The liquid reservoir is disposed in the handle and is used to store liquid. The liquid reservoir is connected to a first flow channel to supply the liquid to the first flow channel. The pump body is disposed in the handle and is connected to a second flow channel to pump gas into the second flow channel.

10. The oral care device according to claim 9, characterized in that, The liquid storage tank has a liquid injection port, and the main unit also includes a soft rubber interface. The soft rubber interface is located at the liquid injection port and connects the liquid storage tank and the first flow channel. The first flow channel is detachably connected to the soft rubber interface.

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