Housing for an oral irrigator and oral irrigator

Abstract

The utility model discloses a kind of shell and oral irrigator for oral irrigator, the shell for oral irrigator includes: accommodating portion and holding portion, holding portion is connected in the side of accommodating portion in first direction;Wherein, along the direction away from accommodating portion, the width of holding portion in second direction is gradually reduced first and then gradually increased, and second direction is perpendicular to first direction.According to the shell for oral irrigator of the utility model, by making along the direction away from accommodating portion, the width of holding portion in second direction is gradually reduced first and then gradually increased, improve the comfort and holding firmness when user holds oral irrigator, to improve the applicability of oral irrigator.

Description

Technical Field

[0001] This utility model relates to the field of oral irrigator technology, and in particular to an outer shell and an oral irrigator. Background Technology

[0002] In existing technology, oral irrigators typically consist of a main unit and a nozzle. The nozzle is mounted at one end of the main unit in the height direction. The main unit is usually designed with a cylindrical structure, and there is a protrusion on the top of the main unit. When using it, the user holds the main unit with their hand, and the side of their index finger rests against the protrusion on the top of the main unit. However, because the thickness of the main unit is basically the same throughout, this results in poor comfort for users with smaller hands when holding the main unit, and they cannot hold it securely, making the oral irrigator less suitable for all users. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a shell for a water flosser that improves user comfort and grip when holding the water flosser, thereby enhancing the applicability of the water flosser and making its overall appearance more aesthetically pleasing.

[0004] Another objective of this invention is to provide a water flosser that includes the aforementioned housing for a water flosser.

[0005] A housing for a water flosser according to a first aspect embodiment of the present invention includes: a receiving portion; a grip portion connected to one side of the receiving portion in a first direction; wherein, along a direction away from the receiving portion, the width of the grip portion in a second direction gradually decreases and then gradually increases, the second direction being perpendicular to the first direction.

[0006] According to an embodiment of the present invention, the housing of a water flosser is designed such that the width of the grip portion gradually decreases and then gradually increases in the second direction away from the receiving portion. This improves user comfort and grip stability when holding the water flosser compared to conventional water flossers, thereby enhancing its applicability and making its overall appearance more aesthetically pleasing.

[0007] According to some embodiments of the present invention, the minimum width of the gripping part in the second direction is W1, wherein W1 satisfies: 33.0mm≤W1≤42.0mm.

[0008] According to some embodiments of the present invention, the surface of the gripping part in the second direction is a first arc-shaped surface, and the radius of curvature of the first arc-shaped surface in the projection plane of the third direction is R1. The third direction, the second direction and the first direction are orthogonal to each other, wherein R1 satisfies: 76.0mm≤R1≤93.0mm.

[0009] According to some embodiments of the present invention, the width of the gripping part in the second direction is less than the thickness of the gripping part in the third direction; the minimum thickness of the gripping part in the third direction is D1, wherein D1 satisfies: 46.0mm≤D1≤57.0mm.

[0010] According to some embodiments of the present invention, the gripping part is a second arc-shaped surface on the third direction surface, and the radius of curvature of the second arc-shaped surface in the projection plane of the second direction is R2, wherein R2 satisfies: 72.0mm≤R2≤89.0mm.

[0011] According to some embodiments of the present invention, the gripping portion includes a first gripping segment and a second gripping segment. The first gripping segment is connected between the receiving portion and the second gripping segment. Along the direction away from the receiving portion, the width of the first gripping segment in the second direction gradually decreases; along the direction away from the first gripping segment, the width of the second gripping segment in the second direction gradually increases; and the maximum width of the first gripping segment in the second direction is less than the maximum width of the second gripping segment.

[0012] According to some embodiments of the present invention, the maximum width of the first gripping segment in the second direction is W2, and the maximum width of the second gripping segment in the second direction is W3, wherein W1, W2 and W3 satisfy: 1≤W2 / W1≤1.32, 1.10≤W3 / W1≤1.64.

[0013] According to some embodiments of the present invention, the height of the first gripping segment in the first direction is H1, and the height of the second gripping segment in the first direction is H2, wherein H1 and H2 respectively satisfy: 24.0mm≤H1≤30.0mm, 31.0mm≤H2≤38.0mm.

[0014] According to some embodiments of the present invention, the width of the receiving portion gradually increases in the second direction along the direction toward the gripping portion; the maximum width of the receiving portion in the second direction is W4, wherein W2, W3 and W4 satisfy: W2 < W4 < W3; and / or the height of the receiving portion in the first direction is H3, and the height of the gripping portion in the first direction is H4, wherein H3 and H4 satisfy: 0.85 ≤ H3 / H4 ≤ 1.26.

[0015] A water flosser according to a second aspect of the present invention includes: a housing, wherein a water pump assembly is disposed within the housing, and the housing is the housing of the water flosser according to a first aspect of the present invention; a water tank disposed on one side of the housing in a first direction; and a nozzle assembly disposed on the other side of the housing in the first direction, wherein the nozzle assembly is connected to the water tank via a water inlet pipe.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a front view of the housing for a water flosser according to an embodiment of the present invention;

[0019] Figure 2 This is a side view of the housing of a water flosser according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a water flosser according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 100. Housing for water flossers;

[0023] 10. Receiving portion; 20. Holding portion; 21. First arc-shaped surface; 22. Second arc-shaped surface; 23. First holding section; 24. Second holding section;

[0024] 200. Water flosser;

[0025] 30. Water tank; 40. Sprayer assembly. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-3 Description of a housing 100 for a water flosser according to a first aspect embodiment of the present invention.

[0027] like Figure 1As shown, the housing 100 for a water flosser according to a first aspect embodiment of the present invention includes: a receiving portion 10 and a gripping portion 20, the gripping portion 20 being connected to the receiving portion 10 in a first direction (e.g., Figure 1 One side (the vertical direction). For example, in Figure 1 In the example, the receiving portion 10 and the gripping portion 20 are along the height direction of the water flosser housing 100 (e.g., Figure 1 The components are connected sequentially in the vertical direction. When the housing 100 is applied to the water flosser 200, the receiving part 10 is used to accommodate components such as the water pump assembly (not shown in the figure), and the grip part 20 provides a gripping position for the user to hold.

[0028] In this context, along the direction away from the receiving portion 10, the gripping portion 20 is in the second direction (e.g., Figure 1 The width in the left and right directions gradually decreases and then gradually increases, with the second direction being perpendicular to the first direction.

[0029] Specifically, refer to Figure 1 The minimum width of the grip portion 20 is approximately at its center, giving it an hourglass shape. When in use, the grip portion 20 aligns with the shape of the user's hand when partially gripping it, ensuring a perfect fit for all users' hands and guaranteeing comfort when holding the oral irrigator 200. Furthermore, in the second direction, the wider portion of the grip portion 20 near the receiving portion 10 abuts against the side of the user's index finger and thumb, while the narrower portion abuts against the side of the user's little finger and palm. During use, the user's hand tightens from top to bottom, enhancing the stability of the grip.

[0030] In addition, by designing the grip 20 in an hourglass shape, the user's comfort and grip stability when holding the water flosser 200 are improved, while eliminating the need for a protrusion on the top of the main unit of the water flosser 200, reducing material costs and overall weight, and making the overall appearance of the water flosser 200 more aesthetically pleasing.

[0031] According to an embodiment of the present invention, the housing 100 for a water flosser has a width that gradually decreases and then gradually increases in the second direction along the direction away from the receiving portion 10. This improves user comfort and grip stability when holding the water flosser 100 compared to conventional water flossers, thereby enhancing the applicability of the water flosser 200 and making its overall appearance more aesthetically pleasing.

[0032] Furthermore, the minimum width of the gripping part 20 in the second direction is W1, wherein W1 satisfies: 33.0mm≤W1≤42.0mm.

[0033] When W1 < 33.0 mm, the minimum width of the grip 20 in the second direction is too small, resulting in poor structural strength at the minimum width position, making it prone to damage, and the grip 20 cannot support the receiving part 10. When W1 > 42.0 mm, the minimum width of the grip 20 in the second direction is too large, making it impossible for the user's hand to fit perfectly with the grip 20, especially for users with smaller hands who may not be able to hold the water flosser 200. This leads to poor user comfort and an inability to hold the water flosser 200 securely, and the overall weight of the water flosser 200 increases, causing greater strain on the user's hand during prolonged use. Therefore, by setting the minimum width W1 of the grip 20 in the second direction between 33.0 mm and 42.0 mm, both the structural strength of the grip 20 and the user's comfort and security when holding the water flosser 200 can be guaranteed.

[0034] According to some embodiments of the present invention, the surface of the gripping part 20 in the second direction is a first arcuate surface 21, and in the third direction (e.g., Figure 2 The radius of curvature of the first arc surface 21 in the projection plane (left and right directions) is R1. The third direction, the second direction and the first direction are orthogonal to each other, wherein R1 satisfies: 76.0mm≤R1≤93.0mm.

[0035] When R1 < 76.0 mm, the radius of curvature of the first arc surface 21 in the third-direction projection plane is too small, that is, the curvature of the first arc surface 21 is too curved, which causes the first arc surface 21 to not fit tightly with the user's palm. The user's comfort when holding the water flosser 200 is poor, which increases the burden on the user's hand during long-term use. When R1 > 93.0 mm, the radius of curvature of the first arc surface 21 in the third-direction projection plane is too large, that is, the curvature of the first arc surface 21 is too gentle, which causes the first arc surface 21 to not fit tightly with the user's palm. The user's grip on the water flosser 200 is not secure, and the user's hand needs to exert more force to hold the grip part 20 stably. After long-term use, the hand is prone to discomfort and fatigue. Therefore, by setting the radius of curvature R1 of the first arc surface 21 in the third-direction projection plane between 76.0mm and 93.0mm, both the user's comfort when holding the water flosser 200 and the user's stability when holding the water flosser 200 are improved.

[0036] In some alternative embodiments, the width of the grip portion 20 in the second direction is less than the thickness of the grip portion 20 in the third direction. The minimum thickness of the grip portion 20 in the third direction is D1, wherein D1 satisfies: 46.0 mm ≤ D1 ≤ 57.0 mm.

[0037] When D1 < 46.0 mm, the thickness of the grip portion 20 in the third direction is too small. Therefore, the width of the grip portion 20 in the second direction is also too small. The overall structure of the grip portion 20 is too thin, making it difficult for users to comfortably hold the water flosser 200. This is especially true for users with larger hands, whose palms cannot naturally wrap around the grip portion 20, which can easily lead to hand fatigue after prolonged use. Moreover, the insufficient thickness of the grip portion 20 in the third direction results in poor overall structural strength, making it prone to damage after long-term use. When D1 > 57.0 mm, the thickness of the grip portion 20 in the third direction is too large, which is not conducive to users with smaller hands holding the grip portion 20. This results in poor applicability of the water flosser 200 and a greater burden on the user's hands during prolonged use.

[0038] Therefore, by setting the minimum thickness D1 of the grip portion 20 in the third direction between 46.0mm and 57.0mm, the user's comfort when holding the water flosser 200 is improved, and it also facilitates the overall lightweight design of the water flosser housing 100.

[0039] According to some embodiments of the present invention, the gripping part 20 has a second arc-shaped surface 22 on the third direction surface, and the radius of curvature of the second arc-shaped surface 22 in the projection plane of the second direction is R2, wherein R2 satisfies: 72.0mm≤R2≤89.0mm.

[0040] When R2 < 72.0 mm, the radius of curvature of the second arc surface 22 in the projection plane of the second direction is too small, that is, the curvature of the second arc surface 22 is too curved, which makes it impossible for the second arc surface 22 to fit tightly with the user's palm. The user's comfort when holding the water flosser 200 is poor, which increases the burden on the user's hand during long-term use. When R2 > 89.0 mm, the radius of curvature of the second arc surface 22 in the projection plane of the second direction is too large, that is, the curvature of the second arc surface 22 is too gentle, which makes it impossible for the second arc surface 22 to fit tightly with the user's palm. The user's grip on the water flosser 200 is not secure, and the user's hand needs to exert more force to hold the grip part 20 stably. After long-term use, the hand is prone to discomfort and fatigue. Therefore, by setting the radius of curvature R2 of the second arc surface 22 in the projection plane in the second direction between 72.0mm and 89.0mm, both the user's comfort when holding the water flosser 200 and the user's stability when holding the water flosser 200 are improved.

[0041] In some optional embodiments, the grip portion 20 includes a first grip segment 23 and a second grip segment 24. The first grip segment 23 is connected between the receiving portion 10 and the second grip segment 24. Along the direction away from the receiving portion 10, the width of the first grip segment 23 gradually decreases in a second direction. Along the direction away from the first grip segment 23, the width of the second grip segment 24 gradually increases in the second direction. The maximum width of the first grip segment 23 in the second direction is less than the maximum width of the second grip segment 24.

[0042] For example, in Figure 1 In the example, the connection point between the first grip segment 23 and the second grip segment 24 is the minimum width of the grip portion 20. Therefore, the grip portion 20 has a structure that is thinner at the top and thicker at the bottom, so that the orientation of the grip portion 20 matches the shape of the user's hand when it is half-held. Users with smaller hands can grip the upper part of the grip portion 20, while users with larger hands can grip the lower part, ensuring that the hands of different users can perfectly fit the grip portion 20, improving the user's comfort when using the water flosser 200, as well as enhancing the practicality and applicability of the water flosser 200.

[0043] In addition, the second grip section 24 is set to have a larger maximum width in the second direction, that is, the overall structure of the second grip section 24 is larger. When the water flosser 200 is placed vertically, the second grip section 24 can provide stable support for the first grip section 23 and the receiving part 10, making the water flosser 200 less likely to tip over and ensuring the stability of the water flosser 200 when it is not in use.

[0044] According to some embodiments of the present invention, the maximum width of the first gripping segment 23 in the second direction is W2, and the maximum width of the second gripping segment 24 in the second direction is W3, wherein W1, W2 and W3 satisfy: 1≤W2 / W1≤1.32, 1.1≤W3 / W1≤1.64.

[0045] When W2 / W1 < 1, the maximum width of the first grip segment 23 in the second direction is too small compared to the minimum width of the grip portion 20 in the second direction. That is, the overall width of the grip portion 20 in the second direction does not change much, meaning the grip portion 20 is too flat overall. The grip portion 20 cannot fit tightly against the user's palm, resulting in poor stability when the user holds the water flosser 200. The user's hand needs to exert more force to hold the grip portion 20 stably, which can easily cause discomfort and fatigue in the hand after prolonged use. When W2 / W1 > 1.32, the maximum width of the first grip segment 23 in the second direction is too large compared to the minimum width of the grip portion 20 in the second direction. That is, the overall width of the grip portion 20 in the second direction changes too much, meaning the grip portion 20 is too curved overall. The grip portion 20 cannot fit tightly against the user's palm, resulting in poor comfort when the user holds the water flosser 200 and increasing the burden on the user's hand during prolonged use. Therefore, by setting the ratio of the maximum width of the first grip section 23 in the second direction to the minimum width of the grip section 20 in the second direction between 1 and 1.32, both the user's comfort when holding the water flosser 200 and the user's stability when holding the water flosser 200 are improved.

[0046] When W3 / W1 < 1.1, the maximum width of the second grip section 24 in the second direction is too small compared to the minimum width of the grip part 20 in the second direction. That is, the overall width of the grip part 20 in the second direction does not change much, meaning the grip part 20 is too flat overall. The grip part 20 cannot fit tightly against the user's palm, resulting in poor stability when the user holds the water flosser 200. The user's hand needs to exert more force to hold the grip part 20 stably, which can easily cause discomfort and fatigue in the hand after prolonged use. When W3 / W1 > 1.64, the maximum width of the second grip section 24 in the second direction is too large compared to the minimum width of the grip part 20 in the second direction. That is, the overall width of the grip part 20 in the second direction changes too much, meaning the grip part 20 is too curved overall. The grip part 20 cannot fit tightly against the user's palm, resulting in poor comfort when the user holds the water flosser 200 and increasing the burden on the user's hand during prolonged use. Therefore, by setting the ratio of the maximum width of the second grip section 24 in the second direction to the minimum width of the grip section 20 in the second direction between 1.1 and 1.64, both the user's comfort when holding the water flosser 200 and the user's stability when holding the water flosser 200 are improved.

[0047] According to some embodiments of the present invention, the height of the first gripping segment 23 in the first direction is H1, and the height of the second gripping segment 24 in the first direction is H2, wherein H1 and H2 respectively satisfy: 24.0mm≤H1≤30.0mm, 31.0mm≤H2≤38.0mm.

[0048] When H1 < 24.0 mm, the housing 100 of the water flosser or the grip portion on the housing 100 is too small, which affects the comfort of users with larger hands when using the water flosser 200. When H1 > 30.0 mm, the housing 100 of the water flosser is too large, which is not conducive to the use of users with smaller hands and also hinders the lightweight design of the water flosser 200. Therefore, by setting the height of the first grip section 23 in the first direction between 24.0 mm and 30.0 mm, the water flosser 200 can be made suitable for different users while also facilitating a lightweight design and reducing costs.

[0049] When H2 < 31.0 mm, the housing 100 of the water flosser or the grip portion on the housing 100 is too small, which affects the comfort of users with larger hands when using the water flosser 200. When H2 > 38.0 mm, the housing 100 of the water flosser is too large, which is not conducive to the use of users with smaller hands and also hinders the lightweight design of the water flosser 200. Therefore, by setting the height of the second grip section 24 in the first direction between 31.0 mm and 38.0 mm, the water flosser 200 can be made suitable for different users while also facilitating a lightweight design and reducing costs.

[0050] According to some embodiments of the present invention, the width of the receiving portion 10 gradually increases in the second direction along the direction toward the gripping portion 20. The maximum width of the receiving portion 10 in the second direction is W4, wherein W2, W3, and W4 satisfy: W2 < W4 < W3; and / or the height of the receiving portion 10 in the first direction is H3, and the height of the gripping portion 20 in the first direction is H4, wherein H3 and H4 satisfy: 0.85 ≤ H3 / H4 ≤ 1.26.

[0051] Specifically, refer to Figure 1 The width of the receiving portion 10 in the second direction gradually increases and then gradually decreases along the direction towards the grip portion 20. The maximum width of the receiving portion 10 in the second direction is approximately at the middle of the receiving portion 10. The maximum width of the first grip section 23 is at the connection between the grip portion 20 and the receiving portion 10. The maximum width of the second grip portion 20 is at the end of the grip portion 20 away from the receiving portion 10 in the second direction. Thus, the orientation of the receiving portion 10 and the grip portion 20 is consistent with the shape of the user's hand when half-gripping, improving the user's comfort when using the water flosser 200.

[0052] Moreover, this design makes the center of gravity distribution of the water flosser 200 more reasonable. The gradual increase in the width of the receiving part 10 can bring the center of gravity of the water flosser 200 closer to the grip part 20. When the user uses the water flosser 200, the center of gravity being closer to the grip part 20 makes the operation easier and avoids the user having to exert extra force with their hand to balance the water flosser 200, thus improving the comfort and stability of holding the water flosser 200.

[0053] In addition, the design of the gradually increasing width of the receiving part 10 provides more space for the installation and layout of components such as the water pump assembly, and the maximum width of the second gripping part 20 is greater than the maximum width of the receiving part 10, which can provide a larger support area and make the water flosser 200 more stable when placed vertically.

[0054] When H3 / H4 < 0.85, the height of the receiving part 10 in the first direction is too small compared to the height of the holding part 20, resulting in an overall small size of the receiving part 10. This restricts the internal space of the receiving part 10, limiting the layout of components such as the water pump assembly. This may affect the battery capacity, thereby reducing the battery life of the water flosser 200 or affecting the heat dissipation performance of the circuit board. When H3 / H4 > 1.26, the height of the receiving part 10 in the first direction is too large compared to the height of the holding part 20. That is, the proportion of the receiving part 10 on the water flosser 200 is large, which is not conducive to the lightweight design of the water flosser 200. Furthermore, when the water flosser 200 is placed vertically, the holding part 20 cannot effectively support the receiving part 10, resulting in poor stability when the water flosser 200 is placed.

[0055] Therefore, by setting the ratio of the height of the receiving part 10 in the first direction to the height of the holding part 20 in the first direction between 0.85 and 1.26, the internal space of the receiving part 10 is guaranteed, and the lightweight design of the water flosser 200 is also facilitated, thereby improving the stability of the water flosser 200 when placed.

[0056] According to a second aspect of the present invention, a water flosser 200 includes: a housing, a water tank 30, and a nozzle assembly 40.

[0057] The housing includes a water pump assembly (not shown), and the housing is a housing 100 for a water flosser according to a first aspect embodiment of the present invention. A water tank 30 is located on one side of the housing in a first direction, and a nozzle assembly 40 is located on the other side of the housing in the first direction. The nozzle assembly 40 is connected to the water tank 30 via a water inlet pipe (not shown). For example, in... Figure 3 In the example, the nozzle assembly 40, the housing (i.e., the housing 100 for the water flosser), and the water tank 30 are aligned along the height direction of the water flosser 200 (e.g., Figure 3 Connect them sequentially in the top and bottom directions.

[0058] According to the embodiment of the present utility model, the water flosser 200, by adopting the above-mentioned housing 100 for the water flosser, can improve the user's comfort when using the water flosser 200, facilitate the user's long-term holding, and improve the practicality and applicability of the water flosser 200.

[0059] Other configurations and operations of the oral irrigator 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0060] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0063] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A housing for a water flosser, characterized in that, include: Reception area; A gripping part, said gripping part being connected to one side of the receiving part in a first direction; In this direction, the width of the gripping portion gradually decreases and then gradually increases in the second direction, which is perpendicular to the first direction, along the direction away from the receiving portion.

2. The housing for a water flosser according to claim 1, characterized in that, The minimum width of the gripping part in the second direction is W1, wherein W1 satisfies: 33.0mm≤W1≤42.0mm.

3. The housing for a water flosser according to claim 2, characterized in that, The gripping part has a first arc-shaped surface on the second direction, and the radius of curvature of the first arc-shaped surface in the projection plane of the third direction is R1. The third direction, the second direction and the first direction are orthogonal to each other, wherein R1 satisfies: 76.0mm≤R1≤93.0mm.

4. The housing for a water flosser according to claim 3, characterized in that, The width of the gripping portion in the second direction is less than the thickness of the gripping portion in the third direction; The minimum thickness of the gripping part in the third direction is D1, wherein D1 satisfies: 46.0mm≤D1≤57.0mm.

5. The housing for a water flosser according to claim 4, characterized in that, The gripping part is a second arc-shaped surface on the third direction surface, and the radius of curvature of the second arc-shaped surface in the projection plane of the second direction is R2, wherein R2 satisfies: 72.0mm≤R2≤89.0mm.

6. The housing for a water flosser according to any one of claims 1-5, characterized in that, The gripping portion includes a first gripping section and a second gripping section, wherein the first gripping section is connected between the receiving portion and the second gripping section. Along the direction away from the receiving portion, the width of the first gripping segment gradually decreases in the second direction; Along the direction away from the first gripping segment, the width of the second gripping segment gradually increases in the second direction; In the second direction, the maximum width of the first gripping segment is less than the maximum width of the second gripping segment.

7. The housing for a water flosser according to claim 6, characterized in that, The maximum width of the first gripping segment in the second direction is W2, and the maximum width of the second gripping segment in the second direction is W3, wherein W1, W2 and W3 satisfy: 1≤W2 / W1≤1.32, 1.10≤W3 / W1≤1.

64.

8. The housing for a water flosser according to claim 6, characterized in that, The height of the first gripping segment in the first direction is H1, and the height of the second gripping segment in the first direction is H2, wherein H1 and H2 respectively satisfy: 24.0mm≤H1≤30.0mm, 31.0mm≤H2≤38.0mm.

9. The housing for a water flosser according to claim 4, characterized in that, Along the direction toward the gripping portion, the width of the receiving portion gradually increases in the second direction; The maximum width of the receiving portion in the second direction is W4, wherein W2, W3, and W4 satisfy: W2 < W4 < W3; and / or The height of the receiving portion in the first direction is H3, and the height of the gripping portion in the first direction is H4, wherein H3 and H4 satisfy: 0.85≤H3 / H4≤1.

26.

10. A dental flosser, characterized in that, include: A housing, wherein a water pump assembly is disposed within the housing, and the housing is the housing of the oral irrigator according to any one of claims 1-9; A water tank, wherein the water tank is disposed on one side of the outer casing in a first direction; A nozzle assembly is disposed on the other side of the housing in the first direction, and the nozzle assembly is connected to the water tank via a water inlet pipe.

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