Host machine of oral irrigator and oral irrigator

Abstract

The utility model discloses a main machine of an oral irrigator and the oral irrigator. The main machine of the oral irrigator comprises a shell assembly, a water pump assembly and a buffering piece. Wherein the shell assembly comprises a shell, a first support and a second support, the first support and the second support are arranged on the two sides of the shell in the height direction respectively, and the shell, the first support and the second support jointly define a containing cavity; the water pump assembly is arranged in the containing cavity. The buffer piece is arranged between the first support and the water pump assembly, and / or the buffer piece is arranged between the second support and the water pump assembly. According to the main machine of the oral irrigator, the first support and the second support are arranged on the two sides of the shell in the height direction, the buffering piece is arranged between the water pump assembly and the first support and / or the second support, the overall vibration and noise of the oral irrigator are reduced, the damping and noise reduction effects are improved, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] This utility model relates to the field of oral irrigators, and in particular to a main unit and an oral irrigator. Background Technology

[0002] In existing technologies, oral irrigators use a motor to drive a water pump assembly. When the motor runs, it causes the water pump assembly to vibrate, resulting in significant noise and negatively impacting the user experience. To reduce the impact of motor vibration and noise, many oral irrigators incorporate vibration damping structures. However, these existing structures are located between the water pump assembly and the side wall of the housing, which are not directly connected. Therefore, the damping structure cannot effectively prevent the vibration from the water pump assembly from being transmitted to the housing, resulting in poor vibration damping performance. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this utility model is to provide a main unit for a water flosser that reduces overall vibration and noise by providing a first and second bracket on both sides of the housing in the height direction, and by providing a buffer between the water pump assembly and the first and / or second brackets, thereby improving the shock absorption and noise reduction effect and enhancing the user experience.

[0004] Another objective of this invention is to provide a water flosser that includes the main unit of the water flosser described above.

[0005] The main body of the oral irrigator according to a first aspect embodiment of the present invention includes: a housing assembly, the housing assembly including a housing, a first bracket and a second bracket, the first bracket and the second bracket being respectively disposed on both sides of the housing in the height direction, the housing, the first bracket and the second bracket jointly defining a receiving cavity; a water pump assembly disposed within the receiving cavity; and a buffer member disposed between the first bracket and the water pump assembly, and / or the buffer member being disposed between the second bracket and the water pump assembly.

[0006] According to the embodiments of the present invention, the main body of the water flosser is provided with a first bracket and a second bracket on both sides of the height direction of the housing, and a buffer is provided between the water pump assembly and the first bracket and / or the second bracket, which reduces the overall vibration and noise of the water flosser, improves the shock absorption and noise reduction effect, thereby improving the user experience, and makes the structure of the main body of the water flosser more compact and reasonable, which is conducive to the miniaturization design of the water flosser.

[0007] According to some embodiments of the present invention, the water pump assembly has a plurality of protrusions on at least one side of the housing in the height direction, and a plurality of grooves are formed on the buffer member, with the plurality of grooves corresponding one-to-one with the plurality of protrusions, and each protrusion fitting into the corresponding groove.

[0008] According to some embodiments of the present invention, the plurality of protrusions located on the same side of the water pump assembly include a plurality of first protrusions, the plurality of first protrusions being evenly spaced apart along the circumference of the housing, and the plurality of first protrusions being disposed adjacent to the edge of the water pump assembly.

[0009] According to some embodiments of the present invention, the plurality of protrusions located on the same side of the water pump assembly further include at least one second protrusion, the second protrusion being disposed in the middle of the water pump assembly.

[0010] According to some embodiments of the present invention, the buffer member includes: a first buffer portion, the first buffer portion abutting against the first bracket and / or the second bracket; and a plurality of second buffer portions, each of the plurality of second buffer portions being disposed on the side of the first buffer portion adjacent to the water pump assembly, and each second buffer portion having the groove formed thereon.

[0011] According to some embodiments of the present invention, the thickness of each second buffer portion in the height direction of the housing is greater than or equal to the thickness of the first buffer portion.

[0012] According to some embodiments of the present invention, the thickness of the buffer member in the height direction of the housing is D, wherein D satisfies: 2.7mm≤D≤3.3mm.

[0013] According to some embodiments of the present invention, the main body of the oral irrigator further includes: a first sealing member disposed between the inner wall of the housing and the outer wall of the first bracket; and a second sealing member disposed between the inner wall of the housing and the outer wall of the second bracket.

[0014] According to some embodiments of the present invention, the inner wall of the housing is provided with a first limiting part and a second limiting part, both the first limiting part and the second limiting part are located between the first sealing member and the second sealing member, one end of the first bracket adjacent to the second bracket abuts against the first limiting part, and one end of the second bracket adjacent to the first bracket abuts against the second limiting part.

[0015] A water flosser according to a second aspect of the present invention includes: a main unit, which is the main unit of the water flosser according to a first aspect of the present invention; a water tank, which is disposed on one side of the main unit in the height direction; and a nozzle assembly, which is disposed on the other side of the main unit in the height direction, and the nozzle assembly is connected to the water tank through 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] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the main unit of the oral irrigator according to an embodiment of the present utility model;

[0019] Figure 2 This is a cross-sectional view of the main unit of the oral irrigator according to an embodiment of the present utility model;

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a partial schematic diagram of the main unit of the oral irrigator according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of a water flosser according to an embodiment of the present invention.

[0023] Figure label:

[0024] 100. The main unit of the water flosser;

[0025] 10. Outer shell assembly; 11. Housing; 111. First limiting part; 112. Second limiting part; 12. First bracket; 13. Second bracket; 14. Receiving cavity; 20. Water pump assembly; 21. Protrusion; 211. First protrusion; 30. Buffer; 31. Groove; 32. First buffer part; 33. Second buffer part; 40. First seal; 50. Second seal;

[0026] 200. Water flosser;

[0027] 60. Water tank; 70. Sprayer head assembly. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figures 1-5The main unit 100 of the oral irrigator according to a first aspect embodiment of the present invention is described.

[0029] like Figures 1-3 As shown, the main unit 100 of the oral irrigator according to the first aspect embodiment of the present invention includes: a housing assembly 10, a water pump assembly 20, and a buffer 30.

[0030] Specifically, the housing assembly 10 includes a housing 11, a first bracket 12, and a second bracket 13, wherein the first bracket 12 and the second bracket 13 are respectively disposed in the height direction of the housing 11 (e.g., Figure 2 On both sides (up and down direction) of the housing 11, the first bracket 12 and the second bracket 13 together define the receiving cavity 14; the water pump assembly 20 is disposed in the receiving cavity 14; the buffer 30 is disposed between the first bracket 12 and the water pump assembly 20, and / or the buffer 30 is disposed between the second bracket 13 and the water pump assembly 20.

[0031] Among them, the buffer 30 is only located between the second bracket 13 and the water pump assembly 20 (e.g. Figure 2 (as shown); or, the buffer is provided only between the first support and the water pump assembly (not shown); or, buffers are provided between the first support and the water pump assembly, and between the second support and the water pump assembly (not shown).

[0032] For example, in Figure 2 and Figure 3 In the example, the housing 11 is generally a hollow cylindrical structure. The first support 12 and the second support 13 are both located inside the housing 11. The first support 12 is positioned near the top of the housing 11, and the second support 13 is positioned near the bottom of the housing 11. The water pump assembly 20 is located between the first support 12 and the second support 13, and extends along the height direction of the housing 11. The first support 12 abuts against the inner wall of the housing 11 and the top of the water pump assembly 20 on both sides of the housing 11 along the height direction. The buffer 30 abuts against the side of the water pump assembly 20 away from the first support 12 on one side of the housing 11 along the height direction, and against the second support 13 on the other side of the housing 11 along the height direction.

[0033] Specifically, when the water pump assembly 20 is working, the piston component in the water pump assembly 20 reciprocates linearly along the height direction of the housing 11, which may cause the entire water pump assembly 20 to vibrate along the height direction of the housing 11. By setting the first bracket 12 and the second bracket 13 on both sides of the height direction of the housing 11, the impact force generated by the water pump assembly 20 during operation is first transmitted to the first bracket 12 and the second bracket 13. The first bracket 12 and the second bracket 13 can effectively buffer the impact force, preventing the vibration of the water pump assembly 20 from being directly transmitted to the housing 11, thereby reducing the overall vibration and noise of the oral irrigator 200, improving the shock absorption and noise reduction effect, and enhancing the user experience. Moreover, the setting of the buffer 30 further effectively buffers the impact force generated by the water pump assembly 20 during operation, thereby further improving the shock absorption and noise reduction effect. In addition, this setting makes full use of the internal space of the housing 11, making the structure of the oral irrigator main unit 100 more compact and reasonable, which is conducive to the miniaturization design of the oral irrigator 200.

[0034] It should be noted that the buffer 30 is made of materials such as rubber, and this application does not impose specific restrictions on it.

[0035] According to the embodiment of the present utility model, the main body 100 of the water flosser improves the overall vibration and noise of the water flosser 200 by providing a first bracket 12 and a second bracket 13 on both sides of the housing 11 in the height direction, and providing a buffer 30 between the water pump assembly 20 and the first bracket 12 and / or the second bracket 13, thereby improving the shock absorption and noise reduction effect, thus enhancing the user experience, and making the structure of the main body 100 of the water flosser more compact and reasonable, which is conducive to the miniaturization design of the water flosser 200.

[0036] According to some embodiments of the present invention, the water pump assembly 20 has a plurality of protrusions 21 on at least one side of the housing 11 in the height direction. In the description of the present invention, "a plurality of" means two or more. The buffer member 30 has a plurality of grooves 31 formed thereon, and the plurality of grooves 31 correspond one-to-one with the plurality of protrusions 21, with each protrusion 21 fitting into the corresponding groove 31.

[0037] like Figure 3 and Figure 4 As shown, there can be three protrusions 21. The buffer 30 is roughly triangular in shape, and the three grooves 31 are respectively located at the three apex corners of the buffer 30. The protrusions 21 can be provided only on the side of the water pump assembly 20 adjacent to the second bracket 13 in the height direction of the housing 11; or, the protrusions can be provided only on the side of the water pump assembly adjacent to the first bracket in the height direction of the housing (not shown); or, the protrusions can be provided on both sides of the water pump assembly in the height direction of the housing (not shown).

[0038] By having multiple protrusions 21 corresponding to grooves 31, the stability of the connection between the buffer 30 and the water pump assembly 20 can be ensured, preventing the buffer 30 from detaching from the water pump assembly 20 during operation. This ensures that the buffer 30 remains in a preset position during operation, thereby guaranteeing the effectiveness and stability of the buffer 30's shock absorption. Furthermore, the interaction of the multiple protrusions 21 and grooves 31 forms multiple support points, enabling the buffer 30 to better withstand the impact force generated by the vibration of the water pump assembly 20, further improving the shock absorption and noise reduction effects. It also reduces the probability of loosening or even damage to components of the water pump assembly 200 due to long-term vibration of the water pump assembly 20, extending the service life of the water pump assembly 200.

[0039] Furthermore, the plurality of protrusions 21 located on the same side of the water pump assembly 20 include a plurality of first protrusions 211, the plurality of first protrusions 211 being evenly spaced apart along the circumference of the housing 11, and the plurality of first protrusions 211 being disposed adjacent to the edge of the water pump assembly 20.

[0040] like Figure 3 and Figure 4 As shown, there can be three first protrusions 211, and the connecting line of the three first protrusions 211 roughly forms a triangle. The multiple first protrusions 211 are evenly spaced along the circumference of the housing 11, so that the vibration generated by the water pump assembly 20 during operation can be transmitted more evenly to the buffer 30 through the evenly distributed first protrusions 211. This avoids poor shock absorption or damage to the buffer 30 due to uneven force distribution, thereby improving the shock absorption effect of the buffer 30 and extending its service life.

[0041] Furthermore, since the vibration generated by the water pump assembly 20 during operation is transmitted from its middle part to its edge part, the edge part is more susceptible to vibration and thus more likely to sway. By setting multiple first protrusions 211 near the edge of the water pump assembly 20 and having the first protrusions 211 cooperate with the buffer 30, the edge part of the water pump assembly 20 can be fixed, thereby improving the stability of the water pump assembly 20 within the receiving cavity 14.

[0042] Furthermore, the plurality of protrusions 21 located on the same side of the pump assembly 20 also include at least one second protrusion (not shown in the figure), which is located in the middle of the pump assembly 20.

[0043] This design increases the number of connection points between the pump assembly 20 and the buffer 30, resulting in more even force distribution on the buffer 30. This further enhances the shock absorption and noise reduction effects of the buffer 30 and extends its service life. Furthermore, the second protrusion, located in the middle of the pump assembly 20, works in conjunction with the first protrusion 211 on the edge to cooperate with the groove 31, providing support and fixation for the pump assembly 20 from different positions, thus improving the stability of the pump assembly 20 within the receiving cavity 14.

[0044] In some alternative embodiments, the buffer 30 includes a first buffer portion 32 and a plurality of second buffer portions 33. The first buffer portion 32 abuts against the first support 12 and / or the second support 13, and the plurality of second buffer portions 33 are all disposed on the side of the first buffer portion 32 adjacent to the water pump assembly 20, and each second buffer portion 33 has a groove 31 formed thereon.

[0045] like Figure 3 As shown, the first buffer portion 32 and the second bracket 13 abut against each other on the side of the housing 11 facing the water pump assembly 20 in the height direction. The second buffer portion 33 is located on the side of the first buffer portion 32 facing the water pump assembly 20 in the height direction of the housing 11, and the second buffer portion 33 abuts against the water pump assembly 20. The number of second buffer portions 33 can be three, and a groove 31 is formed on the second buffer portion 33. Alternatively, the second buffer portion and the second bracket abut against each other on the side of the housing facing the water pump assembly in the height direction. The first buffer portion is located on the side of the second buffer portion facing the water pump assembly in the height direction of the housing, and the first buffer portion abuts against the water pump assembly, and a groove is formed on the first buffer portion (not shown in the figure). Alternatively, the first buffer portion and the first bracket abut against each other on the side of the housing facing the water pump assembly in the height direction. The second buffer portion is located on the side of the first buffer portion facing the water pump assembly in the height direction of the housing (not shown in the figure). The second buffer portion and the first bracket abut against each other on the side of the housing facing the water pump assembly in the height direction. The first buffer portion is located on the side of the second buffer portion facing the water pump assembly in the height direction of the housing (not shown in the figure).

[0046] The buffer component 30 is divided into a first buffer section 32 and a second buffer section 33. Multiple second buffer sections 33 abut against the water pump assembly 20, directly absorbing the vibrations generated by the water pump assembly 20. The first buffer section 32 abuts against the first bracket 12 and / or the second bracket 13, further buffering the vibrations and improving the shock absorption and noise reduction effects of the buffer component 30. Moreover, this arrangement creates a stable connection between the buffer component 30 and the first bracket 12 and / or the second bracket 13 and the water pump assembly 20, better limiting the displacement of the water pump assembly 20 and enhancing the stability of the connection between the buffer component 30 and the first bracket 12, the second bracket 13, and the water pump assembly 20, further improving the shock absorption and noise reduction effects of the buffer component 30. Furthermore, the second buffer section 33 engages with the protrusion 21 on the water pump assembly 20 through a groove 31, improving the efficiency of installation and positioning, making the installation process simpler and more accurate.

[0047] Specifically, the thickness of each second buffer portion 33 in the height direction of the housing 11 is greater than or equal to the thickness of the first buffer portion 32.

[0048] Since the second buffer part 33 is in direct contact with the water pump assembly 20, it bears most of the impact force generated by the vibration of the water pump assembly 20 during operation. Making the thickness of the second buffer part 33 greater than or equal to that of the first buffer part 32 enhances its buffering capacity, more effectively absorbing and buffering the impact force generated by the vibration of the water pump assembly 20. This reduces the impact of vibration on the internal structure and other components of the water flosser 200, extending its service life. Furthermore, the relatively thin first buffer part 32 mainly serves as a connection with the first support 12 and / or the second support 13, while the thicker second buffer part 33 bears most of the vibration impact force of the water pump assembly 20, reducing the impact of the water pump assembly 20's vibration on the first buffer part 32 and extending its service life, thereby improving the operational reliability of the buffer component 30.

[0049] Furthermore, within the projection plane of the housing 11 in the height direction, the area of ​​the first buffer part 32 is larger than the area of ​​the second buffer part 33. If the thickness of the first buffer part 32 is greater than that of the second buffer part 33, the overall weight and material cost of the buffer part 30 will increase. Making the thickness of the second buffer part 33 greater than or equal to that of the first buffer part 32 ensures the shock absorption and noise reduction effect of the buffer part 30 while reducing the overall weight and material cost of the buffer part 30, which is beneficial to the lightweight design of the water flosser 200.

[0050] According to some embodiments of the present invention, the thickness of the buffer 30 in the height direction of the housing 11 is D, wherein D satisfies: 2.7mm≤D≤3.3mm.

[0051] When D < 2.7mm, the thickness of the buffer 30 in the height direction of the housing 11 is too small, and the buffer 30 cannot effectively buffer the vibration of the water pump assembly 20, which may cause wear or even damage to the internal parts of the water pump assembly 20, shortening the service life of the water flosser 200; when D > 3.3mm, the thickness of the buffer 30 in the height direction of the housing 11 is too large, which increases the overall weight and material cost of the buffer 30, which is not conducive to the lightweight design of the water flosser 200.

[0052] Therefore, by setting the thickness of the buffer 30 in the height direction of the housing 11 between 2.7mm and 3.3mm, the shock absorption and noise reduction effect of the buffer 30 is ensured, while the overall weight and material cost of the buffer 30 are reduced, which is beneficial to the lightweight design of the water flosser 200.

[0053] In some alternative embodiments, the main body 100 of the oral irrigator further includes a first seal 40 and a second seal 50.

[0054] The first sealing element 40 is disposed between the inner wall of the housing 11 and the outer wall of the first support 12, and the second sealing element 50 is disposed between the inner wall of the housing 11 and the outer wall of the second support 13.

[0055] like Figure 2 As shown, the first sealing element 40 and the second sealing element 50 are in annular structure. The outer walls of the first bracket 12 and the second bracket 13 are provided with receiving grooves. The first sealing element 40 is located in the receiving groove of the first bracket 12, and the second sealing element 50 is located in the receiving groove of the second bracket 13.

[0056] Since the water flosser 200 comes into contact with water, dust, and other foreign objects during use, the first seal 40 and the second seal 50 effectively prevent water from entering the main unit from these areas. This avoids water, dust, and other foreign objects coming into contact with components such as the motor inside the main unit 100, which could cause short circuits or electrical leaks and other safety hazards. It also protects internal components from corrosion by foreign objects, extends the service life of the water flosser 200, and improves its operational safety.

[0057] Furthermore, by placing the first seal 40 between the inner wall of the housing 11 and the outer wall of the first bracket 12, and placing the second seal 50 between the inner wall of the housing 11 and the outer wall of the second bracket 13, the stability of the main unit 100 of the water flosser is enhanced, preventing the first bracket 12, the second bracket 13 and the water pump assembly 20 located between the first bracket 12 and the second bracket 13 from shifting in the height direction of the housing 11, reducing vibration caused by structural instability, and further improving the effect of vibration reduction and noise reduction.

[0058] It should be noted that the first seal 40 and the second seal 50 can be sealing rings made of materials such as rubber, and this application does not impose specific restrictions on this.

[0059] According to some embodiments of the present invention, the inner wall of the housing 11 is provided with a first limiting part 111 and a second limiting part 112. The first limiting part 111 and the second limiting part 112 are both located between the first sealing member 40 and the second sealing member 50. One end of the first bracket 12 adjacent to the second bracket 13 abuts against the first limiting part 111, and one end of the second bracket 13 adjacent to the first bracket 12 abuts against the second limiting part 112.

[0060] like Figure 2 As shown, the first limiting part 111 is an annular protrusion structure provided on the inner wall of the housing 11, and an annular groove is formed at one end of the first bracket 12 adjacent to the second bracket 13. The first limiting part 111 is engaged in the annular groove on the first bracket 12. The second limiting part 112 is an annular protrusion structure provided on the inner wall of the housing 11, and an annular groove is formed at one end of the second bracket 13 adjacent to the first bracket 12. The second limiting part 112 is engaged in the annular groove on the second bracket 13.

[0061] This configuration allows for accurate determination of the positions of the first support 12 and the second support 13 within the housing 11, enabling the first support 12 and / or the second support 13 to be quickly and accurately installed in the predetermined positions, thus improving production efficiency and installation accuracy. Furthermore, the cooperation between the limiting part and the annular groove makes the connection between the first support 12 and the second support 13 and the housing 11 more stable, effectively limiting the displacement and swaying of the first support 12 and the second support 13. This ensures stable operation of the water pump unit located between the first support 12 and the second support 13, and reduces vibration and noise caused by structural instability, further enhancing the shock absorption and noise reduction effect of the water flosser 200.

[0062] Furthermore, both the first limiting part 111 and the second limiting part 112 are located between the first sealing member 40 and the second sealing member 50, and the cooperation between the limiting part and the corresponding sealing member further improves the sealing effect. Moreover, the cooperation between the limiting part and the annular groove makes the connection between the first bracket 12 and the second bracket 13 and the housing 11 more stable, and also prevents the sealing members from being damaged due to the displacement or shaking of the first bracket 12 and the second bracket 13, thereby ensuring the working reliability of the first sealing member 40 and the second sealing member 50.

[0063] A water flosser 200 according to a second aspect embodiment of the present invention includes: a main unit, a water tank 60, and a nozzle assembly 70. The main unit is the main unit 100 of the water flosser according to the first aspect embodiment of the present invention; the water tank 60 is disposed along the height of the main unit (e.g., ...). Figure 5The nozzle assembly 70 is located on one side of the main unit in the vertical direction; the nozzle assembly 70 is located on the other side in the height direction of the main unit, and the nozzle assembly 70 is connected to the water tank 60 through a water inlet pipe (not shown in the figure).

[0064] According to the embodiment of the present utility model, the water flosser 200 improves the overall vibration and noise by adopting the main unit 100 of the water flosser 200, enhances the shock absorption and noise reduction effect, improves the user experience, and the structure of the water flosser 200 is more compact and reasonable, which facilitates the miniaturization design of the water flosser 200.

[0065] 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.

[0066] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", 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 are not intended to 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.

[0067] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0068] 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.

[0069] 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 main unit of an oral irrigator, characterized in that, include: The housing assembly includes a housing, a first bracket, and a second bracket, the first bracket and the second bracket being respectively disposed on both sides of the housing in the height direction, and the housing, the first bracket, and the second bracket together defining a receiving cavity; A water pump assembly disposed within the receiving cavity; A buffer element, wherein the buffer element is disposed between the first bracket and the water pump assembly, and / or The buffer is located between the second bracket and the water pump assembly.

2. The main unit of the oral irrigator according to claim 1, characterized in that, The water pump assembly has a plurality of protrusions on at least one side of the housing in the height direction, and a plurality of grooves are formed on the buffer member, with each groove corresponding to one of the protrusions, and each protrusion fitting into the corresponding groove.

3. The main unit of the oral irrigator according to claim 2, characterized in that, The plurality of protrusions located on the same side of the water pump assembly include a plurality of first protrusions, the plurality of first protrusions being evenly spaced apart along the circumference of the housing, and the plurality of first protrusions being disposed adjacent to the edge of the water pump assembly.

4. The main unit of the oral irrigator according to claim 3, characterized in that, The plurality of protrusions located on the same side of the water pump assembly further include at least one second protrusion, the second protrusion being disposed in the middle of the water pump assembly.

5. A main unit of an oral irrigator according to any one of claims 2-4, characterized in that, The buffer includes: A first buffer section, which abuts against the first bracket and / or the second bracket; A plurality of second buffer sections are provided on the side of the first buffer section adjacent to the water pump assembly, and each second buffer section has the groove formed thereon.

6. The main unit of the oral irrigator according to claim 5, characterized in that The thickness of each second buffer portion in the height direction of the housing is greater than or equal to the thickness of the first buffer portion.

7. The main unit of the oral irrigator according to claim 1, characterized in that, The thickness of the buffer element in the height direction of the housing is D, wherein D satisfies: 2.7mm≤D≤3.3mm.

8. The main unit of the oral irrigator according to claim 1, characterized in that, Also includes: The first sealing element is disposed between the inner wall of the housing and the outer wall of the first bracket; The second seal is disposed between the inner wall of the housing and the outer wall of the second bracket.

9. The main unit of the oral irrigator according to claim 8, characterized in that, The inner wall of the housing is provided with a first limiting part and a second limiting part. The first limiting part and the second limiting part are both located between the first sealing member and the second sealing member. One end of the first bracket adjacent to the second bracket abuts against the first limiting part, and one end of the second bracket adjacent to the first bracket abuts against the second limiting part.

10. An oral irrigator characterized by, include: The main unit is the main unit of the oral irrigator according to any one of claims 1-9; A water tank, wherein the water tank is located on one side of the host unit in the height direction; The nozzle assembly is located on the other side of the host in the height direction, and the nozzle assembly is connected to the water tank through a water inlet pipe.

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