Oral irrigator and nozzle thereof

Abstract

The utility model discloses an oral irrigator which comprises a nozzle and a main machine, the nozzle comprises a spraying rod and a cleaning piece, a main flow channel is arranged in the spraying rod, the spraying rod is respectively connected with the main machine and the cleaning piece, the main flow channel is used for guiding liquid in a water tank of the main machine to the cleaning piece, and the cleaning piece enables the liquid to form pulse type water columns to be sprayed out. The cleaning piece comprises a connecting part, a first part and a second part, the connecting part is connected with the spraying rod, the first part and the second part are arranged at the two ends of the connecting part in the length direction, and the sectional area of at least the end of the first part in the width direction is gradually reduced in the direction from the connecting end of the first part to the free end of the first part; and in the direction from the connecting end to the free end of the second part, the sectional area of at least the end part of the second part in the width direction is gradually reduced. By reducing the cross-sectional area of at least the end parts of the first part and the second part, the overall volume of the cleaning piece extending into the oral cavity is effectively reduced, foreign body sensation of the oral cavity of a user is reduced, and collision between the cleaning piece and teeth is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of toothbrushes, in particular to a toothbrush irrigator and a nozzle thereof. Background Art

[0002] An oral irrigator is a tool for cleaning teeth. Currently, an oral irrigator uses a standard nozzle to rinse teeth, which can only rinse the outer teeth, and the inner teeth are difficult to clean. In the prior art, there is a U-shaped nozzle that can clamp the two sides of the teeth, and both sides are provided with water spray ports, so that the inner and outer sides of the teeth can be cleaned. In actual use, due to the large size of the U-shaped nozzle, it is easy to collide with the teeth, making it difficult for the teeth to be stuck in the U-shaped nozzle, and the user is inconvenient to operate. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a water flosser and a nozzle thereof, which are convenient for teeth to be inserted into the nozzle and the nozzle is not likely to collide with the teeth.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] A nozzle comprises a spray rod and a cleaning part, wherein the spray rod is provided with a main flow channel, and the spray rod is used to connect with a main unit of a water flosser; the cleaning part comprises a connecting part, a first part and a second part, wherein the first part and the second part are arranged at both ends of the connecting part in the length direction, the first part and the second part are arranged at intervals to form a track groove together with the connecting part, and the track groove is used to accommodate teeth, the connecting part is provided with a transition flow channel, the main flow channel is connected with the transition flow channel, the first part is provided with a first flow channel and a first nozzle connected to each other, the second part is provided with a second flow channel and a second nozzle connected to each other, the first flow channel and the second flow channel are connected with the transition flow channel respectively, the first nozzle faces the second part, the second nozzle faces the first part, and the connecting part is connected to the spray rod; wherein, from the connecting end of the first part to the free end direction, the cross-sectional area of ​​at least the end of the first part in the width direction thereof gradually decreases; from the connecting end of the second part to the free end direction, the cross-sectional area of ​​at least the end of the second part in the width direction thereof gradually decreases.

[0006] As one implementation manner, the material of the first part is soft rubber, and the material of the second part is soft rubber.

[0007] As one embodiment, the distance between the first nozzle and the bottom of the track groove is L1, the length of the first part is L2, 0.7≤L1 / L2<1; or the distance between the second nozzle and the bottom of the track groove is L3, the length of the second part is L4, 0.7≤L3 / L4<1.

[0008] As one implementation manner, the connecting portion is made of soft rubber.

[0009] As one implementation manner, at least one of the thickness of the first portion and the thickness of the second portion is smaller than the thickness of the connecting portion.

[0010] As one implementation manner, one end of the spray rod used for connecting to the main machine is a bridging end, the first part is located on a side of the second part away from the bridging end, and the thickness of the first part is smaller than the thickness of the second part.

[0011] As one implementation manner, the cross-sectional area of ​​the first portion in the width direction gradually decreases, and the cross-sectional area of ​​the second portion in the width direction gradually decreases.

[0012] As one implementation manner, the free end of the first portion bends and extends toward the second portion, and the free end of the second portion bends and extends toward the first portion.

[0013] As one embodiment, the first part has a relative first inner surface and a first outer surface, the second part has a relative second inner surface and a second outer surface, and the connecting part has a relative transition inner surface and a transition outer surface; the first inner surface, the transition inner surface, and the second inner surface are connected in sequence by smooth transition, or the first outer surface, the transition outer surface, and the second outer surface are connected in sequence by smooth transition.

[0014] As one of the embodiments, the width of at least the end of the first part in its width direction gradually decreases from the connecting end to the free end of the first part, and the width of at least the end of the second part in its width direction gradually decreases from the connecting end to the free end of the second part.

[0015] As one implementation manner, the width of the first portion in the width direction thereof gradually decreases, and the width of the second portion in the width direction thereof gradually decreases.

[0016] As one embodiment, the ratio of the cross-sectional area of ​​the free end of the first portion in the width direction to the cross-sectional area of ​​the connecting end of the first portion in the width direction is less than 1 / 3; or

[0017] A ratio of a cross-sectional area of ​​the free end of the second portion in its width direction to a cross-sectional area of ​​the connecting end of the second portion in its width direction is less than 1 / 3.

[0018] As one implementation manner, the free end of the first portion gradually converges in a direction away from the connecting portion; and the free end of the second portion gradually converges in a direction away from the connecting portion.

[0019] As one of the embodiments, the first part has a first midplane along the extension direction of the connecting part and parallel to the thickness direction of the first part, and the first part is symmetrical about the first midplane; the second part has a second midplane along the extension direction of the connecting part and parallel to the thickness direction of the second part, and the second part is symmetrical about the second midplane, and the first midplane and the second midplane are coplanar.

[0020] A water flosser comprises a main unit and a nozzle according to any one of the above embodiments, wherein the nozzle is connected to the main unit.

[0021] The beneficial effects of the utility model are as follows: the application provides a nozzle, the nozzle comprises a spray rod and a cleaning part, the spray rod is connected to the main machine and the cleaning part respectively, the spray rod is used to guide the liquid in the main machine water tank to the cleaning part, and the cleaning part sprays it out in a pulsed water column; the cleaning part comprises a connecting part, a first part and a second part, the connecting part is connected to the spray rod, the first part and the second part are arranged at both ends of the length direction of the connecting part, wherein, from the connecting end to the free end direction of the first part, the cross-sectional area of ​​at least the end of the first part in the width direction gradually decreases; from the connecting end to the free end direction of the second part, the cross-sectional area of ​​at least the end of the second part in the width direction gradually decreases. By reducing the cross-sectional area of ​​at least the end of the first part and the second part, the overall volume of the cleaning part extending into the oral cavity is effectively reduced, and the foreign body sensation in the user's oral cavity is reduced; when using the above-mentioned tooth irrigator, it is convenient for the user to insert the teeth into the track groove in the blind field, and because the cross-sectional area of ​​the end of the first part and the second part extending into the oral cavity is small, the first part and the second part have a large space in the oral cavity that can move relatively, and when the user moves the nozzle to rinse all teeth, the nozzle and the teeth are effectively avoided from colliding, which improves the comfort during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram showing the structure of the water flosser according to an embodiment of the utility model is shown;

[0023] Figure 2 A schematic diagram showing the structure of a nozzle according to an embodiment of the utility model is shown;

[0024] Figure 3 A cross-sectional schematic diagram of a nozzle according to an embodiment of the utility model is shown;

[0025] Figure 4 A schematic diagram showing the inner surface structure of the cleaning element of an embodiment of the utility model is shown;

[0026] Figure 5 A schematic diagram showing the outer surface structure of the cleaning member of an embodiment of the utility model is shown;

[0027] Figure 6 Shows Figure 3 Enlarged view of point D in the middle.

[0028] Description of reference numerals:

[0029] 1000, water flosser; 100, nozzle; 200, host;

[0030] 10. Spray rod; 11. Main flow channel;

[0031] 20. Cleaning part; 21. Connecting part; 22. First part; 23. Second part; 201. Track groove; 211. Transition flow channel; 213. Transition inner surface; 215. Transition outer surface; 221. First flow channel; 223. First nozzle; 225. First inner surface; 227. First outer surface; 232. Second flow channel; 234. Second nozzle; 236. Second inner surface; 238. Second outer surface. DETAILED DESCRIPTION

[0032] In the present invention, the terms "disposed", "provided with", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] like Figure 1 As shown, an embodiment of the present application provides a water flosser 1000, including a nozzle 100 and a main unit 200, wherein the nozzle 100 is connected to the main unit 200, and the main unit 200 is provided with a water tank (not shown in the figure) and a pressurizing member (not shown in the figure), wherein the liquid in the water tank is pressurized and the pressurized liquid is sprayed out through the nozzle 100 to form a pulsed water column to spray and wash the user's teeth.

[0038] It should be noted that the nozzle 100 can be detachably connected to the host 200 or fixedly connected to the host 200. The nozzle 100 is connected to the host 200 and communicates with the water tank inside the host 200. The nozzle 100 is used to receive the pressurized liquid inside the water tank to form a pulsed water column to spray to the user's teeth, thereby achieving the effect of cleaning the teeth.

[0039] See also Figure 2 The nozzle 100 includes a spray rod 10 and a cleaning component 20. A main flow channel 11 is arranged in the spray rod 10. The spray rod 10 is connected to the main unit 200 and the cleaning component 20 respectively, and the main flow channel 11 is connected to the main unit 200 and the cleaning component 20 respectively. The main flow channel 11 is used to guide the liquid in the water tank of the main unit 200 to the cleaning component 20. The cleaning component 20 receives the liquid transported by the main flow channel 11 and sprays it out in a pulsed water column.

[0040] See also Figure 3 The cleaning part 20 includes a connecting part 21, a first part 22 and a second part 23. The connecting part 21 is connected to the spray rod 10. The first part 22 and the second part 23 are arranged at both ends of the connecting part 21 in the length direction. The first part 22 and the second part 23 are arranged at intervals. The first part 22, the second part 23 and the connecting part 21 are jointly surrounded to form a track groove 201. The track groove 201 is used to accommodate teeth. Specifically, the track groove 201 has an open end, and the teeth extend into the track groove 201 from the open end, so that the first part 22 and the second part 23 clamp the teeth, which is convenient for flushing the teeth.

[0041] The connecting portion 21 is provided with a transition channel 211, the connecting portion 21 is connected to the spray rod 10 and the transition channel 211 is connected to the main channel 11, the first portion 22 is provided with a first channel 221 and a first nozzle 223 which are connected to each other, the second portion 23 is provided with a second channel 232 and a second nozzle 234 which are connected to each other, the first channel 221 and the second channel 232 are respectively connected to the transition channel 211, the first nozzle 223 faces the second portion 23, and the second nozzle 234 faces the first portion 22.

[0042] In actual application, when the tooth is inserted into the track groove 201, the first part 22 and the second part 23 are respectively located on the inner and outer sides of the tooth. For example, the first part 22 is located on the inner side of the tooth, and the second part 23 is located on the outer side of the tooth. Therefore, the first nozzle 223 is opposite to the inner side of the tooth, and the second nozzle 234 is opposite to the outer side of the tooth. When the main flow channel 11 guides the liquid in the water tank of the host 200 to the transition flow channel 211, the transition flow channel 211 guides the liquid to the first flow channel 221 and the second flow channel 232 respectively. The first flow channel 223 is opposite to the inner side of the tooth, and the second nozzle 234 is opposite to the outer side of the tooth. The channel 221 guides the liquid to the first nozzle 223, and the first nozzle 223 forms a pulsed water column and sprays it toward the second part 23, that is, the water column is sprayed toward the inside of the teeth, so as to clean the inner surface of the teeth; the second flow channel 232 guides the liquid to the second nozzle 234, and the second nozzle 234 forms a pulsed water column and sprays it toward the first part 22, that is, the water column is sprayed toward the outside of the teeth, so as to clean the outer surface of the teeth, so that both the inner and outer sides of the teeth can be cleaned, thereby improving the cleaning effect of the teeth.

[0043] In addition, when the first nozzle 223 and the second nozzle 234 spray water relative to each other, the water columns sprayed by the two are at roughly the same position on the inside and outside of the teeth, so that the impact forces of the water columns on the inside and outside of the teeth can offset each other, avoiding the impact force of the water columns on only one side of the teeth, thereby causing the teeth to loosen.

[0044] Among them, from the connection end of the first part 22 to the free end direction, the cross-sectional area of ​​at least the end of the first part 22 in the width direction gradually decreases; from the connection end of the second part 23 to the free end direction, the cross-sectional area of ​​at least the end of the second part 23 in the width direction gradually decreases. In actual application, the user holds the spray rod 10, with the cleaning part 20 facing the side of the human body, puts the cleaning part 20 into the oral cavity, and then inserts the teeth into the track groove 201. The user cannot observe this process with his eyes and can only operate it by feeling and blind vision. By reducing the cross-sectional area of ​​at least the end of the first part 22 and the second part 23, the overall volume of the cleaning part 20 extending into the oral cavity is effectively reduced, reducing the foreign body sensation in the user's oral cavity. At the same time, since the cross-sectional area of ​​the end of the first part 22 and the second part 23 extending into the oral cavity is small, the first part 22 and the second part 23 have a large space in the oral cavity where they can move relatively, effectively avoiding collision with the teeth, and facilitating the user to insert the teeth into the track groove 201 by blind vision.

[0045] It should be noted that the first part 22 extends in a direction away from the spray rod 10, and its extension direction is defined as the length direction of the first part 22, the direction in which the first part 22 extends along the length direction of the connecting part 21 is defined as the thickness direction of the first part 22, and the direction of the first part 22 perpendicular to its length direction and thickness direction is defined as the width direction of the first part 22; it can be understood that the length, thickness and width definitions of the second part 23 are the same as those of the first part 22.

[0046] The cross-sectional area of ​​the first portion 22 in its width direction gradually decreases, which is different from the gradually decreasing cross-sectional area of ​​at least the end of the first portion 22 in the width direction mentioned above in that: along the length direction of the first portion 22, the overall cross-sectional area of ​​the first portion 22 shows a gradually decreasing trend. In this way, along the length direction of the first portion 22, the cross-sectional area of ​​the first portion 22 in its width direction tends to decrease more evenly, thereby avoiding the cross-sectional area of ​​a certain part suddenly becoming smaller, thereby causing sharp edges and corners to be formed in this part and scratching the user; at the same time, the overall cross-sectional area shows a gradually decreasing trend, which can also play a guiding role, facilitating the teeth to be stuck in the track groove 201, and the cross-sectional area of ​​the end of the first portion 22 close to the connecting portion 21 is larger, and it has a stronger structural strength, thereby making the first portion 22 have a better holding effect.

[0047] It can be understood that the second part 23 can be configured in the same manner as the first part 22, and the cross-sectional area of ​​the second part 23 in its width direction gradually decreases to avoid a situation where the cross-sectional area of ​​a certain part of the second part 23 along its length direction suddenly decreases, thereby preventing the second part 23 from forming sharp edges and corners here and scratching the user. At the same time, it can also serve as a guide to facilitate the teeth to be inserted into the track groove 201, and cooperate with the first part 22 to facilitate the clamping of the inner and outer sides of the teeth.

[0048] Specifically, from the connecting end to the free end of the first part 22, the width of at least the end of the first part 22 in its width direction gradually decreases, and from the connecting end to the free end of the second part 23, the width of at least the end of the second part 23 in its width direction gradually decreases.

[0049] It can be understood that the cross-sectional area of ​​the first portion 22 in the width direction gradually decreases, which may be the thickness of the first portion 22 gradually decreases, or the width gradually decreases, or both gradually decrease at the same time. The cross-sectional area of ​​the second portion 23 in the width direction gradually decreases, which may be the thickness of the second portion 23 gradually decreases, or the width gradually decreases, or both gradually decrease at the same time.

[0050] Because when the cleaning piece 20 is placed in the oral cavity, the width direction of the first part 22 and the second part 23, that is, the length direction when the oral cavity is not opened, if the width of the ends of the first part 22 and the second part 23 is too large, it is not convenient to put it into the oral cavity and it is easy to collide with the teeth. Therefore, compared with reducing the thickness of the first part 22, the present application chooses to reduce the width of the ends of the first part 22 and the second part 23, which greatly facilitates the insertion of the cleaning piece 20 into the oral cavity, and at the same time facilitates the teeth to be stuck in the track groove 201, effectively avoiding the first part 22 and the second part 23 from colliding with the teeth; and in order to clean the teeth in all positions, the first part 22 and the second part 23 need to move along the direction of tooth arrangement, that is, move along the length direction of the oral cavity, and the first part 22 and the second part 23 with smaller width are more convenient to move in the oral cavity.

[0051] More specifically, the width of the first portion 22 gradually decreases in its width direction. Unlike the above-mentioned gradual decrease in the width of at least the end portion of the first portion 22 in its width direction, the overall width of the first portion 22 shows a gradually decreasing trend along the length direction of the first portion 22. In this way, the width of the first portion 22 decreases more evenly along the length direction of the first portion 22, which can avoid the sudden reduction in the width of a certain end portion of the first portion 22 along its length direction, resulting in the formation of sharp edges in this portion, scratching the user's mouth. By gradually reducing the overall width of the first portion 22, the first portion 22 has a more beautiful appearance and a more reasonable structural design.

[0052] It is understandable that the second portion 23 can be configured in the same manner as the first portion 22, and the width of the second portion 23 gradually decreases in its width direction. This configuration can prevent the width of a certain end portion of the second portion 23 along its length direction from suddenly decreasing, resulting in the formation of sharper edges in this portion, thereby scratching the user.

[0053] See also Figure 4 and Figure 5 The first part 22 has a relative first inner surface 225 and a first outer surface 227, the second part 23 has a relative second inner surface 236 and a second outer surface 238, and the connecting part 21 has a relative transition inner surface 213 and a transition outer surface 215; the first inner surface 225, the transition inner surface 213 and the second inner surface 236 are connected in sequence to form the groove wall of the track groove 201, and the first inner surface 225, the transition inner surface 213, and the second inner surface 236 are connected in sequence in a smooth transition. That is to say, the groove wall of the track groove 201 is a smooth arc surface. When the teeth are rinsed, since the teeth are stuck in the track groove 201, the residues rinsed out from the gaps between the teeth will fall onto the groove wall of the track groove 201. The smooth arc-shaped groove wall makes it easy for the residues to slide off from it, thereby preventing the residues from remaining in the groove wall of the track groove 201 and being difficult to clean.

[0054] In one embodiment, the first outer surface 227, the transition outer surface 215, and the second outer surface 238 are connected in a smooth transition in sequence. The first outer surface 227, the transition outer surface 215, and the second outer surface 238 constitute the outer peripheral surface of the cleaning element 20. When in use, the outer peripheral surface contacts the user's oral cavity. The outer peripheral surface formed by the smooth transition of the three surfaces can prevent sharp outer edges from scratching the user's oral cavity, and at the same time facilitate the removal of the cleaning element 20 from the user's mouth to avoid getting stuck.

[0055] In one embodiment, the ratio of the cross-sectional area of ​​the free end of the first part 22 in the width direction to the cross-sectional area of ​​the connecting end of the first part 22 in the width direction is less than 1 / 3, the first part 22 has a free end and a connecting end, the connecting end is connected to the connecting part 21, and the free end is connected to the end of the connecting end away from the connecting part 21. Since the free end needs to be extended into the oral cavity and clamp the teeth, the cross-sectional area of ​​the free end in the width direction is set to be smaller to ensure that the free end is not easy to interfere with the teeth when it is clamped into the teeth; the cross-sectional area of ​​the connecting end in the width direction is set to be larger to ensure that the first part 22 has better structural strength, can better support the free end, and make the free end have a better clamping effect.

[0056] It can be understood that the second part 23 can be configured in the same manner as the first part 22. The second part 23 also has a free end and a connecting end. The connecting end is connected to the connecting part 21, and the free end is connected to the end of the connecting end away from the connecting part 21. The ratio of the cross-sectional area of ​​the free end of the second part 23 in its width direction to the cross-sectional area of ​​the connecting end of the second part 23 in its width direction is less than 1 / 3, so as to ensure that the free end is not easy to interfere with the teeth when it is clamped into the teeth. At the same time, the second part 23 has better structural strength, can better support the free end, and make the free end have a better clamping effect.

[0057] In one of the embodiments, the free end of the first part 22 gradually converges in the direction away from the connecting part 21. The difference between this configuration and the gradually decreasing width of the first part 22 mentioned above is that the width and thickness of the free end of the first part 22 gradually decrease in the direction away from the connecting part 21. On the one hand, it is beneficial for the cleaning part 20 to extend into the oral cavity to avoid collision with the teeth. At the same time, the reduced thickness can effectively reduce the foreign body sensation in the oral cavity and facilitate the movement of the cleaning part 20 in the oral cavity. On the other hand, the simultaneous reduction in thickness and width makes the outer peripheral surface of the first part 22 smoother, avoiding the outer peripheral surface of the first part 22 from scratching the user's mouth, and can also form a guiding effect, further facilitating the teeth to be inserted into the track groove 201.

[0058] It can be understood that the second part 23 can be configured in the same manner as the first part 22, and the free end of the second part 23 gradually converges in the direction away from the connecting part 21, which can avoid the second part 23 from colliding with the teeth, and at the same time can effectively reduce the foreign body sensation in the oral cavity and facilitate the movement of the cleaning part 20 in the oral cavity.

[0059] The free end of the first part 22 is bent and extended toward the second part 23, and the free end of the second part 23 is bent and extended toward the first part 22. Based on such a structure, when the tooth is inserted into the track groove 201, the free end of the first part 22 is bent and extended in the direction close to the tooth, so that it can better abut against the inner side of the tooth, and the free end of the second part 23 is also bent and extended in the direction close to the tooth, so that it can better abut against the outer side of the tooth. The first part 22 and the second part 23 cooperate with each other to have a better clamping effect on the teeth, improve the relative stability between the cleaning part 20 and the teeth, avoid the teeth from leaving the track groove 201 under the reaction force of the pulsed water column, help protect the teeth, prevent the teeth from loosening, and facilitate flushing of fixed positions to enhance the cleaning effect.

[0060] See also Figure 6 , the distance between the side of the first part 22 facing the second part 23 and the side of the second part 23 facing the first part 22 is L5 mm, 8≤L5≤14. It should be noted that L5 is equivalent to the width of the opening end of the track groove 201 along the tooth thickness direction, and the larger L5 is, the thicker the tooth thickness that the track groove 201 can accommodate is.

[0061] The present application sets L5 between 8 mm and 14 mm. L5 within this range can enable the teeth to be smoothly inserted into the track groove 201, while avoiding excessive gaps between the teeth and the first part 22 and the second part 23, thereby affecting the clamping effect of the first part 22 and the second part 23 on the teeth. Specifically, when L5 is less than 8 mm, the gap between the first part 22 and the second part 23 is small. When accommodating thicker teeth, the teeth are not easy to extend into the track groove 201, and the gap between the first nozzle 223, the second nozzle 234 and the teeth is too small, and the teeth easily block the first nozzle 223 and the second nozzle 234, thereby hindering the ejection of the pulsed water column; if L5 is greater than 14 mm, the gap between the first part 22 and the second part 23 is larger, and the first part 22 and the second part 23 cannot play a role in clamping and positioning. As a result, when rinsing the teeth, the ejected water column hits the teeth and exerts a certain reaction force on the first part 22 and the second part 23. Under this reaction force, the first part 22 and the second part 23 are easy to move relative to the teeth, and even cause the first part 22 and the second part 23 to be separated from the mouth, causing the water column to be sprayed outside the mouth, which is dangerous.

[0062] In one embodiment, at least one of the thickness of the first part 22 and the thickness of the second part 23 is smaller than the thickness of the connecting part 21. Specifically, the first part 22 and the second part 23 are respectively connected to the two ends of the connecting part 21, and the connecting part 21 is connected to the spray rod 10. The connecting part 21 serves as the main supporting structure of the cleaning part 20. When the cleaning part 20 is extended into the oral cavity, the clamping force between the first part 22 and the second part 23 and the teeth and the reaction force of the water column on the first part 22 and the second part 23 will be transmitted to the connecting part 21. Therefore, the connecting part 21 needs to have a certain structural strength to provide better support for the first part 22 and the second part 23, so as to avoid deformation of the connecting part 21 under the action of force transmission, thereby causing the cleaning part 20 to deform relative to the teeth, and the positions of the first nozzle 223 and the second nozzle 234 relative to the teeth are difficult to control, which affects the flushing effect of the first nozzle 223 and the second nozzle 234 on the tooth gap.

[0063] As a preferred embodiment, the thickness of the first part 22 and the second part 23 are both smaller than the thickness of the connecting part 21. The first part 22 and the second part 23 are smaller in thickness and are easy to deform. Specifically, when the first part 22 and the second part 23 clamp teeth of different thicknesses, in the process of contacting with the teeth, the first part 22 and the second part 23 with smaller thickness are easy to deform and move in the opposite direction away from each other to increase the gap between the two, so that the teeth are easier to extend into the track groove 201, and are adapted to the teeth of different users. At the same time, when washing the teeth, under the reaction force of the pulsed water column sprayed from the first nozzle 223 and the second nozzle 234, the first part 22 and the second part 23 with smaller thickness are also easier to deform in the direction away from each other, so as to avoid being too tight with the teeth, causing the tooth surface to block the first nozzle 223 and the second nozzle 234.

[0064] One end of the spray rod 10 for connecting with the main machine 200 is a bridging end. The first portion 22 is located on a side of the second portion 23 away from the bridging end. The thickness of the first portion 22 is smaller than that of the second portion 23 .

[0065] The first part 22 is located on the side of the second part 23 away from the bridging end. Specifically, when the cleaning piece 20 is inserted into the oral cavity and the teeth are inserted into the track groove 201, the first part 22 is located on the inner side of the teeth and the second part 23 is located on the outer side of the teeth. Since the inner side of the teeth has a smaller movable space than the outer side, if the thickness of the first part 22 is too thick, on the one hand, it is not conducive to the first part 22 being inserted into the oral cavity, and on the other hand, it enhances the foreign body sensation in the oral cavity. Therefore, setting the thickness of the first part 22 to be smaller than the thickness of the second part 23 is conducive to the first part 22 being inserted into the oral cavity and facilitating the relative movement of the first part 22 on the inner side of the teeth, while reducing the foreign body sensation in the user's mouth.

[0066] As a preferred embodiment, when the first part 22 is located on the side of the second part 23 away from the bridging end, that is, the first part 22 is located on the inner side of the teeth, when the cleaning element 20 is inserted into the oral cavity, the first part 22 will preferentially contact the teeth, and the second part 23 is less likely to contact the teeth. Therefore, the first part 22 can be set as follows: the thickness of the first part 22 is less than the thickness of the connecting part 21, and less than the thickness of the second part 23, and the ratio of the cross-sectional area of ​​the free end of the first part 22 in its width direction to the cross-sectional area of ​​the connecting end of the first part 22 in its width direction is less than 1 / 3, so as to ensure that the first part 22 can be smoothly inserted into the teeth while avoiding collision with the teeth.

[0067] In one embodiment, the first portion 22 has a first midplane along the extension direction of the connecting portion 21 and parallel to the thickness direction of the first portion 22, and the first portion 22 is symmetrical about the first midplane; the second portion 23 has a second midplane along the extension direction of the connecting portion 21 and parallel to the thickness direction of the second portion 23, and the second portion 23 is symmetrical about the second midplane, and the first midplane and the second midplane are coplanar. Specifically, along the extension direction of the connecting portion 21, there is a plane parallel to the thickness direction of the first portion 22, and the first portion 22 and the second portion 23 are symmetrical about this plane. In this way, along the extension direction of the connecting portion 21, the positions of the first portion 22 and the second portion 23 in the width direction are approximately the same, or the distance between them is small, so that the overall width of the cleaning member 20 in the width direction is small, which is convenient for insertion into the oral cavity.

[0068] The material of the first part 22 can be soft rubber, and the material of the second part 23 can be soft rubber. The soft rubber has good flexibility, is easy to deform and has a certain recovery effect. When the teeth are stuck in the track groove 201, the first part 22 and the second part 23 will be squeezed by the teeth. The soft rubber material can make the first part 22 and the second part 23 deform away from each other under this squeezing force to increase the distance between the first part 22 and the second part 23, so that the track groove 201 can adapt to teeth of different thicknesses or different types. In this way, the adaptability of the oral irrigator 1000 to different users is improved.

[0069] More specifically, since the distance L5 between the first portion 22 and the second portion 23 is set to 8 mm to 14 mm, when the first portion 22 and the second portion 23 are in a natural state, that is, in a state where no deformation occurs, this distance can accommodate teeth of normal thickness, such as incisors, canines, and molars. When encountering larger or deformed teeth with larger thickness, since the first portion 22 and the second portion 23 are made of soft rubber and are flexible, when the thicker teeth extend into the track groove 201, the first portion 22 and the second portion 23 can be deformed for the first time to increase the distance between the two and accommodate the thicker teeth. In addition, since the first portion 2 The first part 22 and the second part 23 are respectively provided with a first nozzle 223 and a second nozzle 234. The first nozzle 223 sprays a pulsed water column toward the inner side of the tooth, and the second nozzle 234 sprays a pulsed water column toward the outer side of the tooth. Under the reaction force of the pulsed water column, the first part 22 and the second part 23 can undergo a second deformation, and the distance between them is increased again, so that a gap appears between the first part 22 and the second part 23 and the teeth, so as to prevent the first part 22 and the second part 23 from being too tightly stuck to the teeth and blocking the first nozzle 223 and the second nozzle 234 from spraying water columns, and at the same time, the residue washed off the teeth can flow out of the gap.

[0070] In one of the embodiments, the material of the connecting portion 21 may also be soft rubber. In actual application, the user's front teeth can be first inserted into the track groove 201. At this time, the connecting portion 21 is opposite to the user's lower teeth. Since the user opens his mouth for a long time, fatigue is likely to occur, and the user's mouth will naturally close. At this time, the lower teeth are connected to the connecting portion 21. The material of the connecting portion 21 is soft rubber, which can effectively reduce the foreign body sensation caused by the teeth touching each other; at the same time, the connecting portion 21 serves as a supporting component for the first portion 22 and the second portion 23. In addition to providing better support to the first portion 22 and the second portion 23, the connecting portion 21 made of soft rubber can also transmit the deformation of the first portion 22 and the second portion 23 to the connecting portion 21. The connecting portion 21 made of soft rubber can provide a flexible transition effect to absorb this deformation, which is beneficial for the first portion 22 and the second portion 23 to return to their original state after deformation.

[0071] See again Figure 6, the distance from the first nozzle 223 to the bottom of the track groove 201 is L1, and the length of the first part 22 is L2, where 0.7 ≤ L1 / L2 < 1, that is, L1 < L2. Specifically, along the length direction of the first part 22, the first nozzle 223 is located on the side of the free end of the first part 22 close to the connecting part 21. Thus, when its free end bends and extends towards the second part 23, there is a certain distance between the end face of the free end of the first part 22 and the first nozzle 223 along the length direction of the connecting part 21. Therefore, when the free end clamps the tooth, whether the first part 22 is in the natural state or the deformed state, this distance can ensure that there is a certain gap between the tooth surface of the tooth and the first nozzle 223, which can prevent the tooth surface from closely adhering to the first nozzle 223 and blocking the first nozzle 223, resulting in difficulty in spraying the water column from the first nozzle 223 or difficulty in the residue in the tooth gap falling from the tooth surface. At the same time, L1 < L2 can prevent the first nozzle 223 from being set too high, causing the water column it sprays to impact the gum and damage the gum.

[0072] And L1 should be greater than 0.7L2. That is to say, the position of the first nozzle 223 from the end face of the free end of the first part 22 should not be too far, so as to ensure that when the free end of the first part 22 clamps the tooth, the pulsed water column sprayed by the first nozzle 223 can冲向 the upper middle part of the tooth gap. Because generally, food residues are stuck in the upper middle part of the tooth gap. If the position of the first nozzle 223 from the end face of the free end of the first part 22 is too far, resulting in the insufficient height of the water column sprayed by the first nozzle 223 and unable to wash the upper middle part of the tooth gap, thus unable to wash down the residue and reducing the cleaning effect of the oral irrigator 1000.

[0073] It can be understood that the second nozzle 234 can be set the same as the first nozzle 223. The distance from the second nozzle 234 to the bottom of the track groove 201 is L3, and the length of the second part 23 is L4, where 0.7 ≤ L3 / L4 < 1, to ensure that the position of the second nozzle 234 from the end face of the free end of the second part 23 is not too close or too far, to prevent the tooth surface from closely adhering to the second nozzle 234 and blocking the second nozzle 234, and at the same time to prevent the second nozzle 234 from being set too high, causing the water column it sprays to impact the gum and damage the gum; to ensure that the water column sprayed by the second nozzle 234 is towards the upper middle part of the tooth, which is beneficial to washing the residue in the tooth gap clean.

[0074] It should be noted that the "冲向" in the original text seems to be an incorrect or incomplete expression. It might be a misspelling or an incomplete word. I translated it as "冲向" as it is in the original, but it might need to be corrected to a proper word in the actual context.Different from the prior art, the present application provides a water flosser 1000, including a nozzle 100 and a main unit 200, the nozzle 100 includes a spray rod 10 and a cleaning part 20, a main flow channel 11 is arranged in the spray rod 10, the spray rod 10 is connected to the main unit 200 and the cleaning part 20 respectively, the main flow channel 11 is used to guide the liquid in the water tank of the main unit 200 to the cleaning part 20, and the cleaning part 20 forms a pulsed water column to spray it out; the cleaning part 20 includes a connecting part 21, a first part 22 and a second part 23, the connecting part 21 is connected to the spray rod 10, the first part 22 and the second part 23 are arranged at both ends of the length direction of the connecting part 21, the first part 22, the second part 23 and the connecting part 21 are jointly arranged to form a track groove 201, the track groove 201 is used to accommodate teeth, wherein, from the connecting end of the first part 22 to the free end direction, the cross-sectional area of ​​at least the end part of the first part 22 in the width direction thereof gradually decreases; from the connecting end of the second part 23 to the free end direction, the cross-sectional area of ​​at least the end part of the second part 23 in the width direction thereof gradually decreases. The present application effectively reduces the overall volume of the cleaning component 20 extending into the oral cavity by reducing the cross-sectional area of ​​at least the ends of the first part 22 and the second part 23, thereby reducing the foreign body sensation in the user's oral cavity. At the same time, since the cross-sectional areas of the ends of the first part 22 and the second part 23 extending into the oral cavity are relatively small, the first part 22 and the second part 23 have a larger space in the oral cavity to move relative to each other, effectively avoiding collision with the teeth, making it convenient for the user to insert the teeth into the track groove 201 in the blind field.

[0075] The above is only a specific implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, 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 nozzle, characterized in that: include: A spray rod is provided with a main flow channel, and the spray rod is used to connect with the main unit of the water flosser; A cleaning part, comprising a connecting part, a first part and a second part, wherein the first part and the second part are arranged at two ends of the connecting part in a length direction, the first part and the second part are arranged at intervals to form a track groove together with the connecting part, the track groove is used to accommodate teeth, the connecting part is provided with a transition flow channel, the main flow channel is connected to the transition flow channel, the first part is provided with a first flow channel and a first nozzle that are connected to each other, the second part is provided with a second flow channel and a second nozzle that are connected to each other, the first flow channel and the second flow channel are respectively connected to the transition flow channel, the first nozzle faces the second part, the second nozzle faces the first part, and the connecting part is connected to the spray rod; Among them, from the connecting end to the free end of the first part, the cross-sectional area of ​​at least the end of the first part in its width direction gradually decreases; from the connecting end to the free end of the second part, the cross-sectional area of ​​at least the end of the second part in its width direction gradually decreases.

2. The nozzle according to claim 1, characterized in that The material of the first part is soft rubber, and the material of the second part is soft rubber.

3. The nozzle according to claim 2, characterized in that The distance between the first nozzle and the bottom of the track groove is L1, the length of the first portion is L2, and 0.7≤L1 / L2<1; or The distance between the second nozzle and the bottom of the track groove is L3, the length of the second portion is L4, and 0.7≤L3 / L4<1.

4. The nozzle according to claim 2, characterized in that The connecting part is made of soft rubber.

5. The nozzle according to claim 1, characterized in that At least one of a thickness of the first portion and a thickness of the second portion is smaller than a thickness of the connecting portion.

6. The nozzle according to claim 5, characterized in that One end of the spray rod used for connecting with the main machine is a bridging end, the first part is located on a side of the second part away from the bridging end, and the thickness of the first part is smaller than the thickness of the second part.

7. The nozzle according to claim 1, characterized in that The cross-sectional area of ​​the first portion in the width direction thereof gradually decreases, and the cross-sectional area of ​​the second portion in the width direction thereof gradually decreases.

8. The nozzle according to claim 7, characterized in that The free end of the first portion is bent and extended toward the second portion, and the free end of the second portion is bent and extended toward the first portion.

9. The nozzle according to claim 1, characterized in that The first part has a first inner surface and a first outer surface opposite to each other, the second part has a second inner surface and a second outer surface opposite to each other, and the connecting part has a transition inner surface and a transition outer surface opposite to each other; The first inner surface, the transition inner surface, and the second inner surface are connected in a smooth transition sequence, or the first outer surface, the transition outer surface, and the second outer surface are connected in a smooth transition sequence.

10. The nozzle according to claim 1, characterized in that From the connecting end to the free end of the first part, the width of at least the end of the first part in its width direction gradually decreases, and from the connecting end to the free end of the second part, the width of at least the end of the second part in its width direction gradually decreases.

11. The nozzle according to claim 10, characterized in that The width of the first portion in the width direction thereof gradually decreases, and the width of the second portion in the width direction thereof gradually decreases.

12. The nozzle according to claim 1, characterized in that A distance between a side of the first part facing the second part and a side of the second part facing the first part is L5 mm, 8≤L5≤14.

13. The nozzle according to claim 1, characterized in that The ratio of the cross-sectional area of ​​the free end of the first portion in the width direction to the cross-sectional area of ​​the connecting end of the first portion in the width direction is less than 1 / 3; or A ratio of a cross-sectional area of ​​the free end of the second portion in its width direction to a cross-sectional area of ​​the connecting end of the second portion in its width direction is less than 1 / 3.

14. The nozzle according to claim 13, characterized in that The free end of the first part gradually converges in a direction away from the connecting part; the free end of the second part gradually converges in a direction away from the connecting part.

15. The nozzle according to claim 1, characterized in that The first part has a first midplane along the extension direction of the connecting part and parallel to the thickness direction of the first part, and the first part is symmetrical about the first midplane; the second part has a second midplane along the extension direction of the connecting part and parallel to the thickness direction of the second part, and the second part is symmetrical about the second midplane, and the first midplane and the second midplane are coplanar.

16. A water flosser, characterized in that: include: A main unit and a nozzle according to any one of claims 1 to 15, wherein the nozzle is connected to the main unit.

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