Nozzle and oral irrigator

Abstract

The nozzle is applied to the oral irrigator and comprises a spraying rod and a spraying head, the spraying rod extends in the first direction, the spraying head comprises a connecting part, a first side part and a second side part, the connecting part is connected with the spraying rod, the first side part extends in the second direction from one end of the connecting part, and the second side part extends in the second direction from the other end of the connecting part. The second side part extends from the other end of the connecting part along a second direction, the second side part and the first side part are spaced and are oppositely arranged along the first direction, so that the connecting part, the first side part and the second side part form an accommodating cavity for accommodating teeth, the second direction is perpendicular to the first direction, and the second direction is perpendicular to the first direction. The first side portion has the first length relative to the connecting portion, the second side portion has the second length relative to the connecting portion, and the first length is set to be smaller than the second length, so that the spray head can smoothly slide on the teeth, and the spray head and the teeth are prevented from being stuck.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning, and in particular to a nozzle and an oral irrigator. Background Art

[0002] An oral irrigator is a tool that uses pulsed water flow to clean teeth and tooth gaps. In the related art, a U-shaped nozzle can be used to clamp the inner and outer tooth surfaces of teeth, and clean the inner and outer tooth surfaces of teeth on the basis of clamping. However, since the thickness of teeth of different people is different, when using a U-shaped nozzle to clean teeth, thicker teeth make it difficult for the U-shaped nozzle to move back and forth in the oral cavity, which causes the U-shaped nozzle to get stuck with the teeth. Utility Model Content

[0003] The embodiments of the present application provide a nozzle and a water flosser, which are intended to prevent the nozzle from getting stuck in the teeth.

[0004] A first aspect of an embodiment of the present application provides a nozzle for use in a water flosser, the nozzle comprising a spray rod and a nozzle; the spray rod extends along a first direction and has a spray rod flow channel inside, the nozzle comprising a connecting portion, a first side portion and a second side portion; the connecting portion is connected to the spray rod and has a diversion channel that flows with the spray rod flow channel; the first side portion extends from one end of the connecting portion along a second direction and has a first flow channel connected to the diversion channel, the first side portion has a first inner side surface, the first flow channel forms a first nozzle on the first inner side surface, wherein the second direction is perpendicular to the first direction; the second side portion extends from the connecting portion to the first side surface, The other end of the connecting portion extends along the second direction and has a second flow channel connected to the diversion channel, the second side portion is spaced from the first side portion and arranged opposite to each other along the first direction, so that the connecting portion, the first side portion and the second side portion constitute an accommodating cavity for accommodating teeth, the second side portion has a second inner side surface arranged opposite to the first inner side surface along the first direction, and the second flow channel has a second nozzle formed on the second inner side surface; wherein, along the second direction, the first side portion has a first length relative to the connecting portion, the second side portion has a second length relative to the connecting portion, and the first length is less than the second length.

[0005] Furthermore, the nozzle is an elastic member, the first side portion and the second side portion are spaced apart along the first direction, and the first side portion is farther away from the spray rod than the second side portion, the first side portion is used to clean the inner tooth surface, and the second side portion is used to clean the outer tooth surface.

[0006] Further, the first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, and the first thickness is smaller than the second thickness; and / or, along a third direction, the first side portion has a first width, the second side portion has a second width, and the first width is smaller than the second width, wherein the third direction is perpendicular to the first direction and the second direction in each case.

[0007] Further, the first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, and the first thickness and the second thickness gradually decrease along the second direction and in a direction away from the connecting portion; and / or, along a third direction, the first side portion has a first width, the second side portion has a second width, the first width and the second width gradually decrease along the second direction and in a direction away from the connecting portion, wherein the third direction is perpendicular to the first direction and the second direction in each case.

[0008] Further, the first nozzle and the second nozzle are not arranged directly opposite to each other in the first direction, and the first nozzle is arranged close to the free end of the first side portion, and the second nozzle is arranged close to the free end of the second side portion.

[0009] Furthermore, the difference between the first length and the second length is greater than or equal to 2 mm and less than or equal to 12 mm.

[0010] Furthermore, the first length and the second length are both less than or equal to 8 mm; or, the first length is less than or equal to 6 mm and greater than or equal to 3 mm.

[0011] Furthermore, the total thickness of the spray head and the spray rod in the second direction is a third thickness, and the third thickness is not greater than 20 mm.

[0012] Further, the first nozzle faces the accommodating cavity, and the central axis of the first nozzle is set at an angle to the first direction and the second direction; and / or the second nozzle faces the accommodating cavity, and the central axis of the second nozzle is set at an angle to the first direction and the second direction.

[0013] Further, the central axis of the first nozzle has a first angle with the second direction, the central axis of the second nozzle has a second angle with the second direction, and the first angle is less than or equal to the second angle, so that the intersection of the central axis of the first nozzle and the central axis of the second nozzle is closer to the second side.

[0014] Further, the central axis of the first nozzle has a first angle with the second direction, the central axis of the second nozzle has a second angle with the second direction, the first angle is less than or equal to the second angle, and the first angle and the second angle are both greater than or equal to 45 degrees and less than or equal to 90 degrees.

[0015] Furthermore, the spray bar has a first axis along the first direction, and a plurality of connecting lines are provided between the first nozzle and the second nozzle, and at least one of the connecting lines is in the same plane as the first axis.

[0016] Further, the first nozzle and the second nozzle are arranged opposite to each other in the first direction or staggered in the second direction; and / or the connecting portion is smoothly transitionally connected to the first side portion and the second side portion.

[0017] Furthermore, the first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, the connection between the connecting portion and the spray rod has a fourth thickness in the second direction, the ratio of the fourth thickness to the first thickness is not less than 2 and not greater than 5, and / or the ratio of the fourth thickness to the second thickness is not less than 2 and not greater than 5.

[0018] Furthermore, the nozzle is an elastic member, and along the first direction, a distance between the first inner side surface and the second inner side surface is greater than or equal to 8 mm and less than or equal to 14 mm.

[0019] Furthermore, the nozzle is an elastic member, and along the second direction, the ratio of the distance between the first nozzle and the connecting portion to the first length is greater than 2 / 3, and the ratio of the distance between the second nozzle and the connecting portion to the second length is greater than 2 / 3.

[0020] Furthermore, the aperture of the first nozzle and the aperture of the second nozzle are both greater than or equal to 0.4 mm and less than or equal to 0.7 mm.

[0021] Furthermore, the spray rod comprises a main rod portion and a branch rod portion, the branch rod portion is detachably connected to the main rod portion, and one end of the branch rod portion away from the main rod portion is connected to the connecting portion.

[0022] A second aspect of an embodiment of the present application provides a water flosser, comprising a main body and any one of the above-mentioned nozzles, wherein one end of the spray rod away from the connecting portion is connected to the main body and the spray rod is in communication with the main body.

[0023] An embodiment of the present application provides a nozzle and a water flosser, wherein the nozzle is applied to the water flosser, and the nozzle head includes a connecting portion, a first side portion, and a second side portion, wherein along the second direction, the first side portion has a first length relative to the connecting portion, and the second side portion has a second length relative to the connecting portion. By setting the first length to be smaller than the second length, when the nozzle head is inserted into the teeth for flushing, the first side portion and the second side portion are used to clamp the inner and outer tooth surfaces of the teeth. Since the first side portion is shorter than the second side portion, the nozzle head can slide smoothly on teeth of different thicknesses, thereby preventing the nozzle head from getting stuck in the teeth.

[0024] When the nozzle needs to be removed from the teeth, the user can twist the spray rod in any direction, and the spray rod drives the nozzle to move relative to the teeth. Since the first length is smaller than the second length, that is, the first side portion is shorter than the second side portion, the contact area between the first side portion and the teeth or the interaction force between the first side portion and the teeth is smaller than the contact area between the second side portion and the teeth or the interaction force between the first side portion and the teeth. Therefore, the first side portion is easier to detach from the tooth surface. After the first side portion detaches from the tooth surface, the first side portion and the second side portion lose their clamping force on the teeth. Therefore, the second side portion can also directly detach from the tooth surface, making it easier to remove the nozzle from the teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of a water flosser in one embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the exploded structure of a nozzle in one embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the structure of a nozzle in one embodiment of the present application;

[0029] Figure 4 This is a schematic structural diagram of a nozzle in an embodiment of the present application from another perspective;

[0030] Figure 5 for Figure 4 The schematic diagram of the cross-sectional structure of the nozzle shown along the DD section;

[0031] Figure 6 This is a schematic diagram of the structure of a nozzle in one embodiment of the present application;

[0032] Figure 7This is a partial structural schematic diagram of a nozzle in an embodiment of the present application;

[0033] Figure 8 This is a schematic structural diagram of a nozzle from another perspective in an embodiment of the present application;

[0034] Fig. 9 for Figure 8 The schematic diagram of the cross-sectional structure of the nozzle shown is along the EE section;

[0035] Fig.10 This is a schematic structural diagram of a nozzle in an embodiment of the present application from another perspective.

[0036] Explanation of the reference numerals: 1-water flosser; 10-nozzle; 11-spray head; 11a-accommodating chamber; 111-connecting portion; 111a-diverter channel; 111b-inner bottom surface; 112-first side portion; 112a-first flow channel; 112b-first inner side surface; 112c-first nozzle; 112d-central axis of the first nozzle; 113-second side portion; 113a-second flow channel; 113b-second inner side surface; 113c-second nozzle; 113d-central axis of the second nozzle; 12-spray rod; 12a-first axis; 121-main rod portion; 122-branch rod portion; 123-spray rod flow channel; 20-main body. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0038] See also Figure 1 An embodiment of the present application provides a water flosser 1 , which includes a nozzle 10 and a main body 20 .

[0039] Specifically, the main body 20 may include a water tank and a host (neither of which is shown in the figure), and the liquid flowing out of the water tank is pressurized by the host, and the pressurized liquid is sprayed out through the nozzle 10 in a pulsed water column, so as to achieve the cleaning of the user's teeth, wherein the nozzle 10 may be detachably connected to the host, or may be non-detachably connected to the host, and the nozzle 10 is connected to the host, and is used to receive the liquid pressurized by the host, and spray the decompressed liquid to the user's teeth, so as to achieve the effect of cleaning the teeth. According to the structure of the oral cavity, teeth generally include incisors, canines, and molars, whose thickness increases in sequence from the inner and outer directions of the teeth, and the nozzle 10 of the embodiment of the present application can clean the incisors, canines, and molars.

[0040] See also Figure 1-Figure 2 In some embodiments, the nozzle 10 includes a spray head 11 and a spray rod 12 .

[0041] Specifically, the spray rod 12 extends along the first direction AA, wherein one end of the spray rod 12 is connected to the main body 20, and the other end of the spray rod 12 is connected to the nozzle 11, and both are connected to the main body 20 and the nozzle 11. In order to realize the transmission of the liquid of the water flosser 1, the spray rod 12 has a spray rod flow channel 123 (see Figure 5 As shown in the figure, the spray rod flow channel 123 is used to transmit the liquid transmitted from the main body 20 to the spray head 11, and then the spray head 11 forms a pulsed water column with the liquid transmitted from the spray rod flow channel 123 to spray the user's teeth to achieve the cleaning of the teeth. Optionally, one end of the spray rod 12 connected to the main body 20 can be detachably connected to the main body 20, such as a snap connection, a threaded connection or a magnetic connection, etc., which is not specifically limited in this application example.

[0042] Further, the spray rod 12 may include a main rod portion 121 and a support rod portion 122, one end of the main rod portion 121 is connected to the main body 20, the other end of the main rod portion 121 is detachably connected to one end of the support rod portion 122, and the other end of the support rod portion 122 is connected to the spray head 11. Specifically, the other end of the main rod portion 121 and one end of the support rod portion 122 may be connected by a buckle, and when the support rod portion 122 or the main rod portion 121 is damaged, only the damaged support rod portion 122 or the main rod portion 121 needs to be replaced, and the entire spray rod 12 does not need to be replaced, so that the cost of replacing the spray rod 12 can be reduced.

[0043] Please continue reading Figure 3-Figure 5 In some embodiments, the nozzle 11 includes a connecting portion 111, a first side portion 112, and a second side portion 113. The connecting portion 111 is connected to the spray rod 12, specifically, the connecting portion 111 is connected to the other end of the support rod portion 122, wherein the connecting portion 111 has a diverter channel 111a, and the diverter channel 111a is connected to the spray rod flow channel 123. The first side portion 112 extends from one end of the connecting portion 111 along the second direction BB, and the first side portion 112 has a first flow channel 112a connected to the diverter channel 111a. The second side portion 113 extends from the other end of the connecting portion 111 along the second direction BB, and the second side portion 113 has a second flow channel 113a connected to the diversion channel 111a, and the second side portion 113 is spaced apart from the first side portion 112 and is relatively arranged along the first direction AA, so that the connecting portion 111, the first side portion 112 and the second side portion 113 constitute an accommodating cavity 11a for accommodating teeth, wherein the first direction AA is perpendicular to the second direction BB.

[0044] Specifically, the spray rod flow channel 123 transfers the liquid in the water tank in the main body 20 to the diversion channel 111a, and the diversion channel 111a then diverts the liquid in the spray rod flow channel 123 to the first flow channel 112a and the second flow channel 113a, so that the first side portion 112 and the second side portion 113 can clean the inner tooth surface and the outer tooth surface of the teeth respectively. The accommodating chamber 11a formed by the connecting portion 111, the first side portion 112 and the second side portion 113 can be a regular accommodating chamber 11a or an irregular accommodating chamber 11a, and the embodiments of the present application are not limited to this.

[0045] See also Figure 5-Figure 6 Further, the first side portion 112 has a first inner side surface 112b, and the first flow channel 112a has a first nozzle 112c formed on the first inner side surface 112b; the second side portion 113 has a second inner side surface 113b arranged opposite to the first inner side surface 112b along the first direction AA, and the second flow channel 113a has a second nozzle 113c formed on the second inner side surface 113b, wherein along the second direction BB, the first side portion 112 has a first length L1 relative to the connecting portion 111, and the second side portion 113 has a second length L2 relative to the connecting portion 111, and the first length L1 is less than the second length L2.

[0046] Specifically, the shunt channel 111a is connected to the first flow channel 112a and the first nozzle 112c, and is connected to the second flow channel 113a and the second nozzle 113c. It can be understood that the shunt channel 111a shunts the liquid received from the spray bar flow channel 123 to the first flow channel 112a in the first side portion 112 and the second flow channel 113a in the second side portion 113, so that the first nozzle 112c formed by the first inner side surface 112b and the second nozzle 113c formed by the second inner side surface 113b can both spray pulsed water columns, thereby achieving cleaning of the inner and outer tooth surfaces of the teeth. It should be noted that the first inner side surface 112b and the second inner side surface 113b can be flat or curved, and the embodiment of the present application does not limit this.

[0047] In combination with the actual use of the water flosser, in one embodiment, the first side portion 112 can be used to clean the inner tooth surface, and the second side portion 113 can be used to clean the outer tooth surface, or the first side portion 112 can be used to clean the outer tooth surface, and the second side portion 113 can be used to clean the inner tooth surface. Because the first side portion 112 is shorter than the second side portion 113, the nozzle 11 can slide smoothly on teeth of different thicknesses. When the nozzle 11 needs to be removed from the teeth, the user can twist the spray rod 12 in any direction, and the spray rod 12 drives the nozzle 11 to move relative to the teeth. Since the first length L1 is smaller than the second length L2, that is, the first side portion 112 is shorter than the second side portion 113, the contact area between the first side portion 112 and the teeth or the interaction force between the first side portion 112 and the teeth is smaller than the contact area between the second side portion 113 and the teeth or the interaction force between the teeth. Therefore, the first side portion 112 is easier to detach from the tooth surface. After the first side portion 112 detaches from the tooth surface, the first side portion 112 and the second side portion 113 lose their clamping force on the teeth. Therefore, the second side portion 113 can also directly detach from the tooth surface, making it easier to remove the nozzle 11 from the teeth.

[0048] Exemplarily, the first side portion 112 can be used to clean the outer tooth surface, and the second side portion 113 can be used to clean the inner tooth surface. At this time, the user twists the nozzle 10 up and down to move the nozzle head 11 back and forth on the teeth, and the first length L1 is smaller than the second length L2. When the user twists the nozzle 10 up and down, the displacement of the first side portion 112 on the teeth is larger than that of the second side portion 113, so that the first side portion 112 is easier to detach from the outer tooth surface, thereby avoiding the nozzle head 11 from being stuck with the outer tooth surface of the tooth.

[0049] Please continue reading Figure 5-Figure 6 Further, in some embodiments, the nozzle 11 is an elastic member, the first side portion 112 and the second side portion 113 are spaced apart along the first direction AA, and the first side portion 112 is farther away from the spray rod 12 than the second side portion 113, that is, the first side portion is relatively located at the top of the nozzle 11, the first side portion 112 is used to clean the inner tooth surface, and the second side portion 113 is used to clean the outer tooth surface.

[0050] Specifically, the nozzle 11 is an elastic member. It can be understood that the connecting portion 111, the first side portion 112 and the second side portion 113 are all made of elastic materials, wherein the elastic material at least includes silicone material. Since the chemical properties of silicone material are stable, it will not be corroded by saliva even if it is placed in the mouth for a long time, and the silicone material can be edible silicone, so that toxic substances can be prevented from causing damage to the human body.

[0051] When inserting the teeth into the accommodating cavity 11a of the nozzle 11, the first side portion 112 and the second side portion 113 may be deformed when squeezed by the teeth, so that the distance d3 between the first inner side surface 112b of the first side portion 112 and the second inner side surface 113b of the second side portion 113 increases. In this way, the accommodating cavity 11a can be suitable for teeth of different thicknesses, such as incisors, canines and molars. In particular, after the nozzle 11 has finished cleaning the teeth, if it encounters thicker teeth, the nozzle 11 is easy to be stuck in the teeth. Since the nozzle 11 has the ability to deform, the user can use the deformation characteristics of the nozzle 11 to remove the nozzle 11 stuck in the teeth. In this way, the nozzle 11 can be prevented from getting stuck in the teeth.

[0052] Furthermore, since the nozzle 11 is an elastic member, when the nozzle 11 is taken out of the tooth, at least one component of the nozzle 11 undergoes elastic deformation. The embodiment of the present application does not specifically limit the deformed component of the nozzle 11. For example, the connecting portion 111 may be deformed, the first side portion 112 may be deformed, the second side portion 113 may be deformed, or the connecting portion 111, the first side portion 112 and the second side portion 113 may all be deformed.

[0053] Specifically, the first side portion 112 can face the inner tooth surface of the teeth, and the second side portion 113 can face the outer tooth surface of the teeth. When the user disengages the nozzle head 11 from the teeth, the inner tooth surface of the teeth is likely to clamp the nozzle head 11, that is, the first side portion 112 is more likely to be stuck by the teeth than the second side portion 113. According to the habit of using the water flosser 1, the user moves the nozzle head 11 with the hand as the axis. Because the first length L1 is smaller than the second length L2, the displacement of the first side portion 112 on the inner tooth surface is larger than the displacement of the second side portion 113 on the outer tooth surface. In this way, it is possible to more conveniently remove the nozzle head 11 from the teeth, that is, the nozzle head 11 can be effectively prevented from being stuck between the teeth.

[0054] Furthermore, the first side portion 112 is used to clean the inner tooth surface, and the second side portion 113 is used to clean the outer tooth surface. Since the first length L1 is less than the second length L2, that is, the first side portion 112 is shorter than the second side portion 113, when the tooth is inserted into the accommodating cavity 11a of the nozzle 11, the first side portion 112 is difficult to be blocked by the tooth, thus improving the smoothness of the nozzle 10 being inserted into the oral cavity. The following description is made by taking the first side portion 112 facing the inner tooth surface of the tooth and the second side portion 113 facing the outer tooth surface of the tooth as an example.

[0055] See also Figure 6 Based on the nozzle 11 being an elastic member, in some embodiments, the first side portion 112 has a first thickness H1 in the first direction AA, and the second side portion 113 has a second thickness H2 in the first direction AA, and the first thickness H1 is less than the second thickness H2.

[0056] Specifically, along the second direction BB, since the first length L1 of the first side portion 112 relative to the connecting portion 111 is smaller than the second length L2 of the second side portion 113 relative to the connecting portion 111, the first side portion 112 is shorter. Therefore, the deformation ability of the first side portion 112 is weaker than that of the second side portion 113. Therefore, the first thickness H1 can be set to be smaller than the second thickness H2 so that the first side portion 112 is thinner than the second side portion 113. In this way, the deformation ability of the first side portion 112 can be improved.

[0057] See also Figure 6-Figure 7 Furthermore, the first thickness H1 and the second thickness H2 gradually decrease along the second direction BB and in the direction away from the connecting portion 111. When the first side portion 112 and the second side portion 113 clamp the inner and outer teeth, if the overall thickness of the first side portion 112 and the second side portion 113 remains unchanged, the user's oral cavity has a strong foreign body sensation, thereby affecting the user's comfort when using the oral irrigator 1. By designing that the thickness of the first side portion 112 and the second side in the second direction BB away from the connecting portion 111 gradually decreases, at this time, when the tooth is inserted into the accommodating cavity 11 of the nozzle 11 During the cleaning process 1a, since the first thickness H1 and the second thickness H2 gradually decrease along the second direction BB and in the direction away from the connecting portion 111, the closer the nozzle 11 is to the root of the tooth, the larger the opening of the nozzle 11 is, that is, the opening of the accommodating cavity 11a is directed away from the connecting portion 111, and the opening of the accommodating cavity 11a gradually increases in the second direction BB. When the user inserts the nozzle 11 into the oral cavity to clean the teeth, since the opening of the accommodating cavity 11a gradually increases in the second direction BB, the nozzle 11 can be smoothly inserted into the teeth and clamp the inner and outer tooth surfaces.

[0058] Furthermore, based on the fact that the nozzle 11 is an elastic member, since the first thickness H1 and the second thickness H2 gradually decrease along the second direction BB and in the direction away from the connecting portion 111, there is a certain distance between the free end of the first side portion 112 and the inner tooth surface, and there is also a certain distance between the free end of the second side portion 113 and the outer tooth surface. Under the reaction of the cleaning of the pulsed water column, the first side portion 112 and the second side portion 113 are easier to move away from the inner tooth surface and the outer tooth surface of the teeth, thereby improving the deformation capacity of the first side portion 112 and the second side portion 113.

[0059] See also Figure 7In some embodiments, the total thickness of the nozzle 11 and the nozzle rod 12 in the second direction BB is the third thickness H3, and the third thickness H3 is not greater than 20 mm. For example, the third thickness H3 can be 10 mm, 13 mm, 15 mm, 16 mm and 20 mm. It can be understood that the third thickness H3 can be the length of the first side portion 112 or the length of the second side portion 113 plus the thickness of the connecting portion 111 and the supporting rod portion 122. The third thickness H3 is designed to be not greater than 20 mm, which not only facilitates the nozzle 11 to be stuck into the teeth, but also allows the nozzle 11 to be easily removed on the basis that the nozzle 11 is an elastic member, thereby avoiding the nozzle 11 from being stuck between the teeth. When the third thickness H3 is greater than 20 mm, when the nozzle 11 is inserted into the oral cavity to clean the teeth, due to the thick third thickness H3, the user needs to expand the maxillary and mandibular bones of the teeth to a certain extent to allow the nozzle 11 to enter the oral cavity, resulting in the nozzle 11 being difficult to be stuck into the teeth and the nozzle 11 being difficult to be removed.

[0060] Please continue reading Figure 7 Further, the connection between the connecting portion 111 and the spray rod 12 has a fourth thickness H4 in the second direction BB, that is, the fourth thickness H4 can be the thickness of the connecting portion 111 and the support rod portion 122 in the second direction BB, and the ratio of the fourth thickness H4 to at least one of the first thickness H1 and the second thickness H2 is not less than 2 and not greater than 5. Exemplarily, the ratio of the fourth thickness H4 to the first thickness H1 can be 2, 3, 4, or 5. By designing the ratio of the fourth thickness H4 to the first thickness H1 to be not less than 2 and not greater than 5, the connection between the first side portion 112, the connecting portion 111, and the spray rod 12 are all within the thickness range adapted to the oral cavity, which can not only solve the problem of inadequate cleaning of the teeth, but also facilitate the first side portion 112 to be stuck into the inner tooth surface. If the ratio of the fourth thickness H4 to the first thickness H1 is less than 2, the length of the first side portion 112 is shorter, and there is a problem that the teeth gaps cannot be cleaned. If the ratio of the fourth thickness H4 to the first thickness H1 is greater than 5, the length of the first side portion 112 is longer, making it difficult for the first side portion 112 to fit into the inner tooth surface of the tooth.

[0061] See also Figure 6-Figure 7In some embodiments, the difference between the first length L1 and the second length L2 is greater than or equal to 2 mm and less than or equal to 12 mm. For example, the difference between the first length L1 and the second length L2 can be 2 mm, 4 mm, 6 mm, 8 mm, 10 mm or 12 mm, and combined with the first length L1 being smaller than the second length L2, when the user needs to take the nozzle 11 out of the oral cavity, because the difference between the first length L1 and the second length L2 is greater than or equal to 2 mm and less than or equal to 12 mm, and combined with the first length L1 being smaller than the second length L2, in this way, it is not only easy for the nozzle 11 to detach from the teeth, but also the area of ​​the teeth cleaning can be increased without damaging the gum area. If the difference between the first length L1 and the second length L2 is less than 2 mm, when the nozzle 11 needs to be taken out of the oral cavity, it is difficult for the nozzle 11 to be separated from the inner and outer tooth surfaces of the teeth because the lengths of the first side portion 112 and the second side portion 113 in the second direction BB are relatively close; if the difference between the first length L1 and the second length L2 is greater than 12 mm, the length difference between the first side portion 112 and the second side portion 113 along the second direction BB is relatively large. When cleaning the teeth, because the first side portion 112 is shorter and the second side portion 113 is longer, it is easy to only clean the outer tooth surfaces of the teeth, or the second side portion 113 needs to be extended to contact the gums so that the first side portion 112 can clean the root of the tooth gap on the inner tooth surface, which is easy to cause gum damage.

[0062] Please continue reading Figure 6-Figure 7 In some embodiments, the first length L1 and the second length L2 are both less than or equal to 8 mm. For example, the first length L1 and the second length L2 can be 4 mm, 6 mm, 7 mm, or 8 mm, which are more suitable for being inserted into the oral cavity to clean the teeth. This can avoid cleaning the gum area and can also make it easier for the nozzle 11 to be separated from the teeth. It should be noted that the first length L1 and the second length L2 are different values, and the first length L1 is less than the second length L2. If the length of either the first length L1 or the second length L2 is greater than 8 mm, the user needs to insert the free ends of the first side portion 112 and the second side portion 113 into the gum area when using the water flosser 1, resulting in gum damage. When the nozzle 11 is clamped by the teeth, because the first length L1 and the second length L2 are too long, it is not conducive to the nozzle 11 to slide smoothly in the oral cavity and deform, making it difficult to remove the nozzle 11.

[0063] Please continue reading Figure 4In some embodiments, the first length L1 is less than or equal to 6 mm and greater than or equal to 3 mm. For example, the first length L1 can be 6 mm, 5 mm, 4 mm, or 3 mm. By designing the first length L1 to be less than or equal to 6 mm and greater than or equal to 3 mm, on the one hand, the gaps between teeth can be cleaned effectively, and on the other hand, the nozzle 11 can be prevented from being stuck in the gaps between teeth. If the first length L1 is less than 3 mm, in the process of inserting the teeth into the accommodating cavity 11a of the nozzle 11, due to the small length of the first side portion 112, the first side portion 112 cannot be inserted into the gap between teeth on the inner tooth surface, resulting in the first side portion 112 being unable to effectively clean the gap between teeth on the inner tooth surface, resulting in a decrease in the cleaning efficiency of the water flosser 1; if the first length L1 is greater than 6 mm, in the process of inserting the teeth into the accommodating cavity 11a of the nozzle 11, the first side portion 112 is easily stuck by the inner tooth surface of the teeth and the inner wall of the oral cavity, which is not conducive to the removal of the nozzle 11.

[0064] See also Figure 5 In some embodiments, the first nozzle 112c and the second nozzle 113c are not arranged opposite to each other in the first direction AA and the first nozzle 112c is arranged close to the free end of the first side portion 112, and the second nozzle 113c is arranged close to the free end of the second side portion 113.

[0065] Specifically, the first nozzle 112c and the second nozzle 113c have different cleaning ranges for the inner and outer tooth surfaces of the teeth, so that the cleaning range of the tooth flosser 1 for the teeth can be expanded, thereby improving the cleaning efficiency. Preferably, the first nozzle 112c and the second nozzle 113c are arranged near the free end, and when the inner and outer tooth surfaces of the teeth are cleaned with a pulsed water column, the first side portion 112 and the second side portion 113 are more likely to deform, so that the blockage of the first nozzle 112c and the second nozzle 113c can be avoided.

[0066] In some embodiments, the first nozzle 112c and the second nozzle 113c are arranged opposite to each other in the first direction AA. When cleaning the teeth, since the first nozzle 112c and the second nozzle 113c are arranged opposite to each other, the first nozzle 112c and the second nozzle 113c can clean the same tooth gap or tooth surface at the same time, so that the forces exerted by the first nozzle 112c and the second nozzle 113c on the inner and outer tooth surfaces of the teeth or tooth gaps offset each other, thereby preventing the teeth or tooth gaps from being damaged due to excessive force on one side, thereby protecting the gums from damage.

[0067] In some other embodiments, the first nozzle 112c and the second nozzle 113c are staggered along the second direction BB. When cleaning the teeth, the cleaning area of ​​the first nozzle 112c for the inner tooth surface and the cleaning area of ​​the second nozzle 113c for the outer tooth surface are increased due to the staggered arrangement of the first nozzle 112c and the second nozzle 113c, thereby improving the cleaning efficiency.

[0068] See also Figure 8-Figure 9 In some embodiments, the first nozzle 112c and the second nozzle 113c are both oriented toward the accommodating cavity 11a, and at least one of the central axis 112d of the first nozzle or the central axis 113d of the second nozzle is set at an angle to both the first direction AA and the second direction BB. Exemplarily, when the central axis 112d of the first nozzle is set at an angle to both the first direction AA and the second direction BB, that is, the first nozzle 112c can be set at an angle, and the direction of the angle of inclination is away from the connecting portion 111. At this time, when the first nozzle 112c cleans the inner tooth surface, it not only cleans the teeth, but also cleans the roots of the tooth gaps. In this way, the cleaning effect can be improved. In addition, when manufacturing the nozzle 11, because the first nozzle 112c is set at an angle, the designer can demould the first flow channel 111a along the direction of the inclination of the first nozzle 112c, so that the demoulding of the mold of the first flow channel 111a is facilitated.

[0069] Please continue reading Fig. 9 Further, in some embodiments, the central axis 112d of the first nozzle has a first angle α1 with the second direction BB, and the central axis 113d of the second nozzle has a second angle α2 with the second direction BB, and the first angle α1 is less than or equal to the second angle α2, that is, the inclination angles of the first nozzle 112c and the second nozzle 113c are different, and because the first side portion 112 is used to clean the inner tooth surface and the second side portion 113 is used to clean the outer tooth surface, at this time, the intersection of the central axis 112d of the first nozzle and the central axis 113d of the second nozzle will be closer to the second side portion 112. 13, and combined with the first length L1 being smaller than the second length L2, the length of the first side portion 112 is shorter, and the first angle α1 is smaller than the second angle α2, not only the cleaning area of ​​the first nozzle 112c on the inner tooth surface is increased, but also the first nozzle 112c is prevented from cleaning the inner gums. At the same time, because the length of the second side portion 113 is longer than that of the first side portion 112, the second angle α2 is designed to be greater than the first angle α1, that is, the inclination angle of the second nozzle 113c is smaller than that of the first nozzle 112c, so that the second nozzle 113c can be prevented from cleaning the outer gums. If the first angle α1 is greater than the second angle α2, the intersection of the central axis 112d of the first nozzle and the central axis 113d of the second nozzle will be closer to the first side portion 112, that is, closer to the inner tooth surface, which is easy to clean the gums and cause gum damage.

[0070] Please continue reading Fig. 9Furthermore, in some embodiments, the first angle α1 and the second angle α2 are both greater than or equal to 45 degrees and less than or equal to 90 degrees. For example, the first angle α1 and the second angle α2 can be 45 degrees, 65 degrees, 75 degrees and 90 degrees. The first angle α1 and the second angle α2 are designed to be within the range of 45 degrees to 90 degrees, which can not only achieve comprehensive cleaning of the inner and outer tooth gaps, but also increase the cleaning area. If the first angle α1 and the second angle α2 are both less than 45 degrees, the inclination angles of the first nozzle 112c and the second nozzle 113c are relatively small, and the inclination angles of the water columns ejected from the first nozzle 112c and the second nozzle 113c are relatively small, resulting in the gums on the inner tooth surface and the outer tooth surface being easily cleaned, causing damage to the gums. If the first angle α1 and the second angle α2 are both greater than 90 degrees, at this time, the inclination direction of the first nozzle 112c is set toward the connecting part 111, and the inclination direction of the second nozzle 113c is also set toward the connecting part 111. It can be understood that at this time, the first nozzle 112c and the second nozzle 113c clean toward the top of the teeth, which reduces the tooth cleaning area and reduces the cleaning effect.

[0071] Please continue reading Fig. 9 In some embodiments, the aperture d1 of the first nozzle and the aperture d2 of the second nozzle are both greater than or equal to 0.4 mm and less than or equal to 0.7 mm. For example, the aperture d1 of the first nozzle and the aperture d2 of the second nozzle can be 0.4 mm, 0.5 mm, 0.6 mm, or 0.7 mm. If the aperture d1 of the first nozzle and the aperture d2 of the second nozzle are less than 0.4 mm, the water jet 1 sprays water in a pulsed form. Since the aperture d1 of the first nozzle and the aperture d2 of the second nozzle are both relatively small, the pressure of the water jets from the first nozzle 112c and the second nozzle 113c is relatively large. In particular, when users with relatively fragile teeth use it, it is more likely to cause gum damage. damage; if the aperture d1 of the first nozzle and the aperture d2 of the second nozzle are greater than 0.7mm, the aperture d1 of the first nozzle and the aperture d2 of the second nozzle are both relatively large, and it is difficult for the first nozzle 112c and the second nozzle 113c to form a high-pressure water column, resulting in some highly sticky dirt in the teeth being difficult to be cleaned, resulting in a decrease in the cleaning effect. Therefore, it is necessary to design the aperture d1 of the first nozzle and the aperture d2 of the second nozzle to be greater than or equal to 0.4mm and less than or equal to 0.7mm. When the first nozzle 112c and the second nozzle 113c spray water columns to clean the inner and outer teeth, it can avoid damaging the gums and clean the dirt that is difficult to clean in the teeth.

[0072] Please continue reading Fig. 9In some embodiments, along the first direction AA, the distance d3 between the first inner side surface 112b and the second inner side surface 113b is greater than or equal to 8 mm and less than or equal to 14 mm, that is, the distance d3 of the accommodating cavity 11a is greater than or equal to 8 mm and less than or equal to 14 mm. For example, the distance d3 between the first inner side surface 112b and the second inner side surface 113b can be 8 mm, 10 mm, 12 mm, or 14 mm. When the distance d3 between the first inner side surface 112b and the second inner side surface 113b is less than 8 mm, the first inner side surface 112b and the second inner side surface 113b will clamp the teeth too tightly, thereby weakening the deformation ability of the first side portion 112 and the second side portion 113. When the distance d3 between the first inner side surface 112b and the second inner side surface 113b is greater than 14mm, the size of the accommodating cavity 11a of the nozzle 11 will be too large. When the nozzle 11 is placed in the user's mouth, the first side portion 112 and the second side portion 113 will be stuck between the tooth surface and the inner wall of the mouth, which is likely to produce a strong foreign body sensation. Therefore, the distance d3 between the first inner side surface 112b and the second inner side surface 113b is designed to be greater than or equal to 8mm and less than or equal to 14mm. This distance d3 range is more matched with the size of human teeth, which can not only improve the deformation ability of the first side portion 112 and the second side portion 113, but also avoid the strong foreign body sensation between the first side portion 112 and the second side portion 113 and the inner wall of the mouth.

[0073] See also Figure 5 In some embodiments, the spray rod 12 has a first axis 12a along a first direction AA, and there are multiple connecting lines between the first nozzle 112c and the second nozzle 113c, at least one connecting line is in the same plane with the first axis 12a, and the connecting line can be a straight line or a curve. It can be understood that the plane can pass through or cut through the first nozzle 112c and the second nozzle 113c at the same time, so that the first nozzle 112c and the second nozzle 113c are at least directly opposite or completely opposite. At this time, the first nozzle 112c and the second nozzle 113c can clean the tooth surface or tooth gap of the same tooth at the same time, so that the forces exerted by the first nozzle 112c and the second nozzle 113c on the inner and outer tooth surfaces of the same tooth or tooth gap offset each other, thereby avoiding excessive force on one side of the tooth or tooth gap, causing damage to the tooth. In this way, the teeth can be protected.

[0074] See also Fig. 9In some embodiments, due to the existence of the connecting portion 111, the top surface of the tooth can be pressed against the inner bottom surface 111b of the connecting portion 111 to improve the position stability between the nozzle 11 and the tooth during the cleaning process, and the height of the first inner side surface 112b and the second inner side surface 113b relative to the inner bottom surface 111b can be designed so that when the top surface of the tooth is pressed against the inner bottom surface 111b, the first inner side surface 112b and the second inner side surface 113b do not contact the gums, thereby avoiding gum damage or discomfort. Specifically, the inner bottom surface 111b can be a plane or a curved surface. In some specific embodiments, the connecting portion 111 and the first side portion 112 and the second side portion 113 are smoothly connected. In this way, on the one hand, it can prevent food residues flushed from the teeth from being stuck at the corner connection position between the inner bottom surface 111b and the first inner side surface 112b and the second inner side surface 113b, and on the other hand, it can prevent the user's mouth from being scratched due to the overly sharp corner connection.

[0075] See also Figure 6 as well as Fig. 9 In some embodiments, based on the nozzle 11 being an elastic member, along the second direction BB, the ratio of the distance between the first nozzle 112c and the connecting portion 111 to the first length L1 is greater than 2 / 3, and the ratio of the distance between the first nozzle 113c and the connecting portion 111 to the second length L2 is greater than 2 / 3. It can be understood that the first nozzle 112c and the second nozzle 113c can be arranged closer to the free ends of the first side portion 112 and the second side portion 113. When the first nozzle 112c is in contact with the inner tooth surface, When the first nozzle 112c and the second nozzle 113c are fitted with the outer tooth surface, the first nozzle 112c and the second nozzle 113c are easily blocked. By setting the first nozzle 112c and the second nozzle 113c closer to the free ends of the first side portion 112 and the second side portion 113, when the first nozzle 112c and the second nozzle 113c spray water columns, the first side portion 112 and the second side portion 113 are more likely to be deformed under the reaction force of the water columns, thereby improving the deformation ability of the nozzle 11.

[0076] See also Fig.10In some other embodiments, the first side portion 112 has a first width W1 along the third direction C, and the second side portion 113 has a second width W2 along the third direction C, wherein the third direction C is perpendicular to the first direction AA and the second direction BB, wherein the first width W1 is smaller than the second width W2. It can be understood that because the first length L1 is smaller than the second length L2, that is, along the second direction BB, the length of the first side portion 112 is smaller than the length of the second side portion 113, the deformation ability of the first side portion 112 will be worse than the deformation ability of the second side portion 113. At this time, the first width W1 can be designed to be smaller than the second width W2, that is, the first side portion 112 is narrower than the second side portion 113. In this way, the deformation ability of the first side portion 112 can be improved.

[0077] Furthermore, in some other embodiments, the first width W1 and the second width W2 gradually decrease along the second direction BB and in the direction away from the connecting portion 111, that is, in the process of inserting the tooth into the accommodating cavity 11a, the closer to the gums of the teeth, the smaller the contact area between the first side portion 112 and the second side portion 113 and the gums of the teeth. When cleaning the teeth, the first side portion 112 and the second side portion 113 gradually become narrower, so that the deformation properties of the first side portion 112 and the second side portion 113 are increased. In this way, not only the foreign body sensation in the oral cavity can be reduced, but also the deformation properties of the first side portion 112 and the second side portion 113 can be increased.

[0078] See also Figure 7 as well as Fig.10 Furthermore, in some embodiments, the first thickness H1 and the second thickness H2 gradually decrease along the second direction BB and in the direction away from the connecting portion 111, and the first width W1 and the second width W2 also gradually decrease along the second direction BB and in the direction away from the connecting portion 111. In the process of inserting the tooth into the accommodating cavity 11a, the first width W1 and the first thickness H1 of the first side portion 112 are both reduced along the second direction BB and in the direction away from the connecting portion 111, and the second width W2 and the second thickness H2 of the second side portion 113 are both reduced along the second direction BB and in the direction away from the connecting portion 111. That is, the closer the first side portion 112 and the second side portion 113 are to the gum area, the thinner and narrower the first side portion 112 and the second side portion 113 become. In this way, the nozzle 11 can be easily inserted into the tooth and the foreign body sensation in the oral cavity can be reduced.

[0079] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0080] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A nozzle, characterized in that: Applied to a water flosser, the nozzle comprises a spray rod and a spray head, the spray rod extends along a first direction and has a spray rod flow channel inside, and the spray head comprises: A connecting portion connected to the spray bar and having a flow diversion channel communicating with the spray bar flow channel; a first side portion extending from one end of the connecting portion along a second direction and having a first flow channel communicating with the flow dividing channel, the first side portion having a first inner side surface, the first flow channel forming a first nozzle on the first inner side surface, wherein the second direction is perpendicular to the first direction; and a second side portion extending from the other end of the connecting portion along the second direction, having a second flow channel communicating with the diversion channel, the second side portion being spaced apart from the first side portion and arranged opposite to each other along the first direction, so that the connecting portion, the first side portion and the second side portion constitute an accommodating cavity for accommodating teeth, the second side portion having a second inner side surface arranged opposite to the first inner side surface along the first direction, and the second flow channel forming a second nozzle on the second inner side surface; Wherein, along the second direction, the first side portion has a first length relative to the connecting portion, the second side portion has a second length relative to the connecting portion, and the first length is smaller than the second length.

2. The nozzle according to claim 1, characterized in that The nozzle is an elastic member, the first side portion and the second side portion are spaced apart along the first direction, and the first side portion is farther away from the spray rod than the second side portion, the first side portion is used to clean the inner tooth surface, and the second side portion is used to clean the outer tooth surface.

3. The nozzle according to claim 2, characterized in that The first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, and the first thickness is less than the second thickness; and / or, Along a third direction, the first side portion has a first width, the second side portion has a second width, the first width is smaller than the second width, and the third direction is perpendicular to the first direction and the second direction.

4. The nozzle according to claim 2, characterized in that The first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, and the first thickness and the second thickness gradually decrease along the second direction and in a direction away from the connecting portion; and / or, Along the third direction, the first side portion has a first width, the second side portion has a second width, the first width and the second width gradually decrease along the second direction and in a direction away from the connecting portion, wherein the third direction is perpendicular to the first direction and the second direction.

5. The nozzle according to claim 2, characterized in that The first nozzle and the second nozzle are not arranged directly opposite to each other in the first direction, and the first nozzle is arranged close to the free end of the first side portion, and the second nozzle is arranged close to the free end of the second side portion.

6. The nozzle according to claim 2, characterized in that A difference between the first length and the second length is greater than or equal to 2 mm and less than or equal to 12 mm.

7. The nozzle according to claim 2, characterized in that The first length and the second length are both less than or equal to 8 mm; or, the first length is less than or equal to 6 mm and greater than or equal to 3 mm.

8. The nozzle according to claim 7, characterized in that The total thickness of the spray head and the spray rod in the second direction is a third thickness, and the third thickness is no greater than 20 mm.

9. The nozzle according to claim 1, characterized in that The first nozzle faces the accommodating cavity, and the central axis of the first nozzle is arranged at an angle with the first direction and the second direction; and / or, The second nozzle faces the accommodating cavity, and a central axis of the second nozzle is arranged at an angle to both the first direction and the second direction.

10. The nozzle according to claim 9, characterized in that The central axis of the first nozzle has a first angle with the second direction, and the central axis of the second nozzle has a second angle with the second direction. The first angle is less than or equal to the second angle, so that the intersection of the central axis of the first nozzle and the central axis of the second nozzle is closer to the second side.

11. The nozzle according to claim 9, characterized in that The central axis of the first nozzle has a first angle with the second direction, the central axis of the second nozzle has a second angle with the second direction, the first angle is less than or equal to the second angle, and the first angle and the second angle are both greater than or equal to 45 degrees and less than or equal to 90 degrees.

12. The nozzle according to claim 1, characterized in that The spray bar has a first axis along the first direction, and a plurality of connecting lines are provided between the first nozzle and the second nozzle, and at least one of the connecting lines is in the same plane as the first axis.

13. The nozzle according to claim 1, characterized in that The first nozzle and the second nozzle are arranged opposite to each other in the first direction or staggered in the second direction; and / or the connecting portion is smoothly transitionally connected to the first side portion and the second side portion.

14. The nozzle according to claim 1, characterized in that The first side portion has a first thickness in the first direction, the second side portion has a second thickness in the first direction, the connection between the connecting portion and the spray boom has a fourth thickness in the second direction, the ratio of the fourth thickness to the first thickness is not less than 2 and not greater than 5, and / or the ratio of the fourth thickness to the second thickness is not less than 2 and not greater than 5.

15. The nozzle according to claim 1, characterized in that The nozzle is an elastic member, and along the first direction, a distance between the first inner side surface and the second inner side surface is greater than or equal to 8 mm and less than or equal to 14 mm.

16. The nozzle according to claim 1, characterized in that The nozzle is an elastic member, and along the second direction, the ratio of the distance between the first nozzle and the connecting portion to the first length is greater than 2 / 3, and the ratio of the distance between the second nozzle and the connecting portion to the second length is greater than 2 / 3.

17. The nozzle according to claim 1, characterized in that The aperture of the first nozzle and the aperture of the second nozzle are both greater than or equal to 0.4 mm and less than or equal to 0.7 mm.

18. The nozzle according to any one of claims 1 to 17, characterized in that The spray bar comprises: a main shaft; and, The support rod portion is detachably connected to the main rod portion, and one end of the support rod portion away from the main rod portion is connected to the connecting portion.

19. A dental flosser, characterized in that: include: main body; as well as, According to the nozzle according to any one of claims 1 to 18, one end of the spray rod away from the connecting portion is connected to the main body, and the spray rod is in communication with the main body.

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