A valve structure for a waterpik that is easily disassembled and washed by hand

Abstract

The utility model discloses a valve body structure of convenient hand -to -hand disassembly and washing for oral irrigator, including host computer and water tank, both detachable connection, the host computer is used to provide pumping power, is equipped with first water outlet in its one side, its upper surface is equipped with the water inlet, is equipped with sealing assembly in the water inlet, the water tank is used to store liquid, is equipped with second water outlet in its lower end surface, first check valve is installed at second water outlet, first check valve is in the normal open state, when water tank and host computer separate, first check valve will second water outlet block, after water tank and host computer completely separate, because first check valve will second water outlet block, thereby make the liquid in water tank not spill outside, realize water tank light weight and convenient to clean effect, sealing assembly and first check valve can all be manually disassembled from host computer and water tank without the aid of tools, and every part can be separated after disassembly, can completely clean dirt or impurity on it.

Description

Technical Field

[0001] This utility model belongs to the technical field of oral irrigator structure, specifically a valve body structure for oral irrigators that is easy to disassemble and clean by hand. Background Technology

[0002] Oral irrigators are common oral hygiene products used in daily life. They are usually equipped with a separate water tank. Currently, most pumps used in oral irrigators use an eccentric motion drive with large movements, which generates relatively large vibrations. To make the user more comfortable, the drive unit is integrated into the water tank to form a one-piece structure.

[0003] However, this method results in a very bulky water tank, which also contains electronic components such as motors, making it inconvenient to clean and requiring careful handling during cleaning. Therefore, a split-type water tank structure is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a valve body structure for a water flosser that is easy to disassemble and clean by hand, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A valve body structure for a water flosser that is easy to disassemble and clean includes a main unit and a water tank, which are detachably connected.

[0007] The main unit is used to provide pumping power, and has a first water outlet on one side, a water inlet on its upper surface, and a sealing component is detachably installed in the water inlet.

[0008] The water tank is used to store liquid and has a second water outlet on its lower end face. A first one-way valve is detachably installed at the second water outlet. The first one-way valve is in a normally open state. When the water tank is separated from the main unit, the first one-way valve blocks the second water outlet.

[0009] In a further technical solution, the water inlet end is concave, the sealing component is installed therein, and a plug-in position is provided in the sealing component; the second water outlet end is convex and passes through the plug-in position.

[0010] In a further technical solution, the sealing component is detachably connected to the host.

[0011] In a further technical solution, the sealing assembly includes a sealing silicone sleeve, a filter screen is provided in the sealing silicone sleeve, and protrusions are provided in the filter screen;

[0012] The first one-way valve includes a plug body that can abut against the inner wall of the water tank to block the second water outlet. The lower end face of the plug body is provided with a connecting bracket, and the bottom of the connecting bracket is provided with several water outlet holes. A spring is spring-loaded between the bottom of the connecting bracket and the outer side of the second water outlet.

[0013] In a further technical solution, the bottom of the water tank is provided with a positioning flange along its circumference, the positioning flange enclosing a positioning cavity, and the positioning cavity is adapted to the outer circumferential shape of the upper end face of the main unit.

[0014] In a further technical solution, the host includes a housing, in which a drive device is installed, and the water inlet of the drive device is connected to the water inlet end through a water inlet pipe;

[0015] A fixed bracket is installed in the inner cavity of the housing. The fixed bracket is used to install the driving device. The driving device can move relative to the fixed bracket, and a buffer structure is provided between the two.

[0016] In a further technical solution, the fixed bracket includes an upper bracket and a lower bracket installed at the upper and lower positions of the housing, with a plurality of fixed columns provided between them; the plurality of fixed columns are connected to a movable bracket, which is used to fix the driving device.

[0017] The buffer structure includes a first elastic element and a second elastic element. The first elastic element springs against the drive device and the upper support, and the second elastic element springs against the drive device and the lower support.

[0018] In a further technical solution, the fixed column and the movable bracket are fixedly connected, and the movable bracket is made of a flexible material.

[0019] In a further technical solution, the movable support includes a fixed body, and a plurality of sleeves are provided on the outer periphery of the fixed body. The sleeves are used in conjunction with the fixed column. A limiting boss is provided on the outer periphery of the upper part of the fixed column, and the end of the limiting boss can abut against the outer periphery of the sleeve.

[0020] In a further technical solution, the driving device includes a fixed housing, on which a drive motor and a movable piston are mounted. A piston rod is provided in the movable piston, and one end of the piston rod extending out of the movable piston is eccentrically connected to a driven gear. The driven gear meshes with a driving gear, and the driving gear is connected to the output end of the drive motor.

[0021] The movable plug also includes a water inlet and a water outlet, and the water inlet and the water outlet are each provided with a second one-way valve.

[0022] The beneficial effects of this utility model are:

[0023] During the removal of the water tank, the liquid in the tank will not leak due to the sealing components. However, during this process, the first one-way valve will operate under the action of the spring, gradually sealing the second outlet completely. After the water tank is completely separated from the main unit, the first one-way valve will block the second outlet, preventing the liquid in the tank from spilling out. This achieves the effect of lightweight water tank and easy cleaning, avoiding damage to the electronic components of the main unit. After cleaning the water tank, the user can refill the tank with liquid. At this time, the first one-way valve will be closed, preventing liquid from spilling from the second outlet, making it convenient for the user to operate.

[0024] Both the sealing assembly and the first check valve can be manually removed from the main unit and the water tank without tools, and each part can be separated after disassembly, allowing for thorough cleaning of dirt or impurities.

[0025] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0026] Figure 1 : A three-dimensional structural diagram of this utility model.

[0027] Figure 2 The disassembly structure of the water tank and main unit of this utility model Figure 1 .

[0028] Figure 3 The disassembly structure of the water tank and main unit of this utility model Figure 2 .

[0029] Figure 4 The state of the first one-way valve when the water tank and the main unit of this utility model are separated. Figure 1 .

[0030] Figure 5 The first one-way valve state during the assembly of the water tank and main unit of this utility model. Figure 2 .

[0031] Figure 6 : Structural diagram of the driving device of this utility model.

[0032] Figure 7 Disassembly structure of the drive device of this utility model Figure 1 .

[0033] Figure 8 Disassembly structure of the drive device of this utility model Figure 2 .

[0034] Figure 9 : Structural diagram of the drive motor and movable piston of this utility model.

[0035] Reference numerals: 11-Handheld part, 12-Nozzle part, 2-Main unit, 21-Housing shell, 22-First water outlet, 23-Water inlet, 3-Drive device, 31-Fixed shell, 311-Insertion block, 32-Drive motor, 33-Modible plug, 34-Piston rod, 35-Driven gear, 36-Driven gear, 37-Second check valve, 41-Water inlet pipe, 42-Water outlet pipe, 51-Upper bracket, 52-Lower bracket, 53-Fixed column, 531-Limiting boss, 54-Modible bracket, 541-Fixed body, 542 - Sleeve, 543- Fixing hole, 544- Insertion hole, 545- Buffer block, 546- Extension, 55- Limiting groove, 61- First elastic element, 62- Second elastic element, 7- Water tank, 71- Opening, 72- Cover, 73- Second water outlet, 74- Flange, 75- Positioning cavity, 8- Sealing assembly, 81- Sealing silicone sleeve, 82- Filter screen, 83- Protrusion, 84- Insertion position, 9- First one-way valve, 91- Plug, 92- Connecting bracket, 93- Water outlet, 94- Spring, 95- Sealing ring. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0037] Please refer to Figure 1-9 ;

[0038] The water tank 7 of this utility model adopts a detachable structure, making it more portable; specifically, it includes a main unit 2 and a water tank 7, which are detachably connected; the main unit 2 is used to provide pumping power, and has a first water outlet 22 on one side, and a water inlet 23 on its upper surface, with a sealing component 8 installed in the water inlet 23; the water tank 7 is used to store liquid, and has a second water outlet 73 on its lower end face. In the initial state, the water tank 7 is installed on the upper end of the main unit 2 component, so that the second water outlet 73 corresponds to the water inlet 23, and at the same time, the sealing component 8 prevents the liquid in the water tank 7 from leaking; of course, the water tank 7 is also provided with an opening 71 for filling water, and a cover 72 for sealing the opening 71 is also provided;

[0039] When the water tank 7 needs to be cleaned, assuming there is still some unused water in the water tank 7, separating the water tank 7 from the main unit 2 will cause the liquid in the water tank 7 to flow out from the second water outlet 73. Since there is no support, this liquid will spill out into the outside. To avoid this situation, this embodiment has a first one-way valve 9 installed at the second water outlet 73. When the water tank 7 is connected to the main unit 2, the first one-way valve 9 is pushed up by the inlet 23 or the sealing component 8 to keep it in a normally open state. At this time, it will not affect the liquid from the water tank 7 to the main unit 2. It should be noted that in the prior art, the first one-way valve 9 mostly adopts a combination of spring 94 and valve body. In one embodiment, the inlet 23 can adopt an outward protruding structure, and the sealing component 8 is installed therein. At this time, it can be pushed up by the inlet 23 or the sealing component 8 to keep the first one-way valve 9 in an open state.

[0040] During the removal of water tank 7, the liquid in water tank 7 will not leak out due to the sealing component 8. However, during this process, the first one-way valve 9 will operate under the action of spring 94, gradually completely sealing the second outlet 73. After water tank 7 is completely separated from the main unit 2, the first one-way valve 9 will block the second outlet 73, thus preventing the liquid in water tank 7 from spilling out. This achieves the effect of lightweight water tank 7 and easy cleaning, avoiding damage to the electronic components of the main unit 2. After cleaning water tank 7, the user can refill water tank 7 with liquid. At this time, the first one-way valve 9 will be closed, preventing liquid from spilling out from the second outlet 73, making it convenient for the user to operate.

[0041] In this embodiment, refer to Figure 2 and Figure 3 The inlet end 23 is recessed, and the sealing component 8 is installed therein. A plug-in position 84 is provided in the sealing component 8. The second outlet end 73 is convex and passes through the plug-in position 84. In addition, the sealing component 8 includes a sealing silicone sleeve 81, which has a filter screen 82 and a protrusion 83 in the filter screen 82. The first one-way valve 9 includes a plug body 91, which can abut against the inner wall of the water tank 7 to block the second outlet end 73. A connecting bracket 92 is provided on the lower end face of the plug body 91. Several water outlet holes 93 are provided at the bottom of the connecting bracket 92. A spring 94 is provided between the bottom of the connecting bracket 92 and the outer side of the second outlet end 73.

[0042] Initial state, refer to Figure 4 and Figure 5The protruding part of the second water outlet 73 is inserted into the insertion position 84. At this time, the inner wall of the sealing silicone sleeve 81 and the side wall of the protruding part of the second water inlet 23 are tightly fitted to achieve a sealing effect and prevent liquid leakage. At the same time, the protrusion 83 in the filter screen 82 contacts the bottom of the connecting bracket 92 and presses the spring 94 to push the connecting bracket 92 upward. At the same time, the plug 91 is lifted and separated from the inner wall of the water tank 7. At this time, the second water outlet 73 is in the open state. The liquid in the water tank 7 can pass through the second water outlet 73, through the outlet of the connecting bracket 92, and finally through the filter screen 82 into the main unit 2.

[0043] During the separation of water tank 7 from main unit 2, the protruding part of the water outlet slides relative to the sealing silicone sleeve 81, but remains sealed. At this time, under the action of spring 94, the connecting bracket 92 is pushed downward, and at the same time, the plug 91 also moves downward and gradually approaches the second water outlet 73 on the inner wall of water tank 7. Water tank 7 continues to move upward, and the bottom of connecting bracket 92 separates from the protrusion 83. Under the action of spring 94, connecting bracket 92 moves downward to reach its maximum stroke. At the same time, the plug 91 abuts against the inner wall of water tank 7, blocking the second water outlet 73. The protruding part of the second water outlet 73 separates from the sealing silicone sleeve 81. Based on the above process, there will be no water leakage during the separation of water tank 7 from main unit 2.

[0044] In addition, the first one-way valve 9 can be manually removed from the water tank 7 for cleaning. More specifically, a sealing ring 95 is provided on the outer periphery of the plug body 91. The outer diameter of the plug body 91 is smaller than the inner diameter of the second water outlet 73. After the sealing ring 95 is assembled on the outer periphery of the plug body 91, the overall outer diameter is larger than the outer diameter of the second water outlet 73, which can prevent the first one-way valve 9 from coming off the second water outlet 73. When cleaning is required, the plug body 91 is pushed out, and then the sealing ring 95 is removed by hand. After that, the plug body 91 can naturally pass through the second water outlet 73 to complete the disassembly without the aid of external tools, and the dirt or impurities on it can be thoroughly cleaned.

[0045] The sealing silicone sleeve 81 can be manually disassembled and connected to the water inlet 23 using its deformable properties. The filter screen 82 can also be manually removed from the sealing silicone sleeve 81. After a period of use, dirt or impurities will accumulate on the filter screen 82. At this time, the sealing component 8 can be removed for cleaning.

[0046] Furthermore, the bottom of the water tank 7 is provided with a positioning flange 74 along its circumference. The positioning flange 74 encloses and forms a positioning cavity 75. The positioning cavity 75 is adapted to the outer circumferential shape of the upper end face of the main unit 2. When the water tank 7 and the main unit 2 are combined, it can prevent the two from shifting relative to each other, making the structure more stable.

[0047] One embodiment of this utility model relating to host 2 is as follows: Figure 4As shown, the embodiment also includes a drive device 3. During use, due to the high-speed motion and the fact that the drive device 3 is often high-powered, the benchtop water flosser will cause severe vibration in the entire water tank 7. This embodiment is specifically designed to reduce the vibration of the drive device 3, thereby improving the user experience. (Refer to...) Figure 6-9 Specifically, it includes a housing 21, in which a drive unit 3 is installed. The water inlet of the drive unit 3 is connected to the water inlet end 23 via a water inlet pipe 41. The drive unit 3 also has a water outlet, which is connected to the first water outlet end 22 via a water outlet pipe 42, or directly connected to the oral irrigator via the water outlet pipe 42. A fixed bracket is installed in the inner cavity of the housing 21. The fixed bracket is used to install the drive unit 3. The drive unit 3 can move relative to the fixed bracket, and a buffer structure is provided between the two. It should be noted that the fixed bracket can be an integral structure with the water tank 7, or it can be a separate component that is fixed in the cavity after the drive unit 3 is assembled. In addition, the relative movement between the drive unit 3 and the fixed bracket is slight, mainly caused by the offset generated by the vibration when the drive unit 3 is started.

[0048] When in use, the drive unit 3 will generate violent vibrations. With the cooperation of the fixed bracket and the buffer structure, most of the vibrations generated by the drive unit 3 will be absorbed, and the force transmitted to the housing 21 will be greatly reduced. Since the housing 21 is placed on the table, the jumping and noise of the housing 21 will be reduced during use, thus improving the user experience.

[0049] The buffer structure described in this utility model has multiple implementation methods;

[0050] In the first embodiment, the fixed bracket includes an upper bracket 51 and a lower bracket 52 installed at the upper and lower positions of the housing 21, and a plurality of fixed posts 53 are provided between the two, that is, the fixed posts 53 are arranged longitudinally. The plurality of fixed posts 53 are connected to a movable bracket 54, which is used to fix the driving device 3. In this embodiment, the movable bracket 54 is made of rigid material, and the movable bracket 54 can slide relative to the fixed posts 53. The buffer structure includes a first elastic member 61 and a second elastic member 62. The first elastic member 61 springs against the driving device 3 and the upper bracket 51, and the second elastic member 62 springs against the driving device 3 and the lower bracket 52.

[0051] Under the constraint of the movable bracket 54 and several fixed columns 53, the drive device 3 moves longitudinally, and under the support of the first elastic member 61 and the second elastic member 62, the drive device 3 is in a suspended state. When the drive device 3 moves, the vibration generated by the drive device 3 is multi-directional, and part of the force is upward or downward. At this time, the drive device 3 can generate a slight jump, and the vibration generated by this jump is absorbed by the first elastic member 61 and the second elastic member 62, thereby reducing the force generated by the vibration acting on the housing 21.

[0052] Based on the above, when the drive device 3 is in operation, the force it generates is multi-directional. The structure of Embodiment 1 can reduce the transmission of upward or downward forces. However, the lateral or oblique forces will be transmitted to the fixed column 53 through the movable bracket 54 and finally to the housing 21. Although the transmission of vibration can be reduced to a certain extent, the housing 21 will still have a large vibration sensation.

[0053] In the second embodiment, the fixed bracket includes an upper bracket 51 and a lower bracket 52 installed at the upper and lower positions of the housing 21, and a plurality of fixed posts 53 are provided between the two; the plurality of fixed posts 53 are connected to a movable bracket 54, the fixed posts 53 and the movable bracket 54 are fixedly connected, the movable bracket 54 is made of flexible material, and the movable bracket 54 is used to fix the drive device 3.

[0054] The buffer structure includes a first elastic element 61 and a second elastic element 62. The first elastic element 61 springs against the drive device 3 and the upper support 51, and the second elastic element 62 springs against the drive device 3 and the lower support 52.

[0055] In this embodiment, the movable bracket 54 can be understood as a vibration damping sleeve. Together with the first elastic element 61 and the second elastic element 62, it can suspend the drive device 3. Since the movable bracket 54 is made of soft material, most of the multi-directional vibrations generated when the drive device 3 moves are offset and absorbed by the movable bracket 54, the first elastic element 61 and the second elastic element 62. Only a very small amount of force is transmitted to the housing 21, which greatly reduces the vibration sensation.

[0056] Of course, limit grooves 55 are provided in both the upper bracket 51 and the lower bracket 52 to limit the first elastic member 61 and the second elastic member 62.

[0057] Based on the above embodiments, the movable support 54 includes a fixed body 541, and a plurality of sleeves 542 are provided on the outer periphery of the fixed body 541. The sleeves 542 are used in conjunction with the fixed post 53. A limiting boss 531 is provided on the outer periphery of the upper part of the fixed post 53. The end of the limiting boss 531 can abut against the outer periphery of the sleeve 542. The position of the movable support 54 is limited by the limiting boss 531, which in turn can limit the position of the driving device 3.

[0058] Preferably, three sleeves 542 are provided, and the three sleeves 542 are distributed in a triangle and respectively sleeved on the three corresponding fixed posts 53, limiting the drive device 3 to perform shock absorption from three different directions. Compared with three sleeves 542, the shock absorption effect is not good when there are two sleeves 542, and the structural cost and labor installation cost will be greatly increased when there are four or more sleeves 542.

[0059] Preferably, the sleeve 542 is connected to the fixed body 541 through the elongated extension 546 to improve the shock absorption effect;

[0060] One embodiment of the present invention relates to a drive device 3, specifically including a fixed housing 31, on which a drive motor 32 and a movable plug 33 are mounted. The movable plug 33 is provided with a piston rod 34, one end of which extends out of the movable plug 33 and is eccentrically connected to a driven gear 35. The driven gear 35 meshes with a driving gear 36, and the driving gear 36 is connected to the output end of the drive motor 32. The driven gear 35 is rotatably connected to the fixed housing 31 through a rotating shaft. The movable plug 33 also includes a water inlet end 23 and a water outlet end, both of which are provided with a second one-way valve 37.

[0061] When the drive motor 32 causes the drive gear 36 to drive the driven gear 35 to rotate, the piston rod 34 will reciprocate relative to the movable plug 33 to realize the action of pumping water. Whenever the pumping process is in progress, the second check valve 37 located at the inlet end 23 is in the open state, while the second check valve 37 at the outlet end is closed. When the pumping process is in progress, the second check valve 37 located at the inlet end 23 is closed, while the second check valve 37 at the outlet end is open.

[0062] There are multiple ways to fix the movable bracket 54 to the driving device 3. Specifically, the movable bracket 54 can be fixedly connected to the fixed shell 31 or the driving motor 32, or both at the same time.

[0063] Preferably, the movable bracket 54 is fixedly connected to the drive motor 32, and a fixing hole 543 is provided in the movable bracket 54. The drive motor 32 passes through the fixing hole 543 and is fixed to the movable bracket 54. In addition, a number of inserts 311 are provided at intervals on the fixed shell 31, and the movable bracket 54 is provided with insertion holes 544 that cooperate with the inserts 311, which can simultaneously limit the position of the drive motor 32 and the fixed shell 31. A number of buffer rubber blocks 545 are provided on the bottom surface of the movable bracket 54. The buffer rubber blocks 545 abut against the end face of the fixed shell 31 to achieve a vibration reduction effect.

[0064] In this embodiment of the utility model, the oral irrigator body includes a handheld part 11 and a nozzle part 12. A controller is provided in the handheld part 11. The controller includes a control panel and a microprocessor. The controller is electrically connected to the drive device 3 via a connecting wire. The connecting wire is connected to the water outlet pipe 42. Of course, a circuit board that communicates with the controller can also be provided in the chamber. This circuit board is electrically connected to the drive device 3. However, at least a control switch panel is provided in the handheld part 11, so that the drive device 3 can be directly controlled through the handheld part 11, which is convenient for the user. In addition, the water outlet pipe 42 has a double-layer structure (not shown). The inner layer is used to transport water, and the outer layer is used for wiring.

[0065] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve body structure for an oral irrigator that is conveniently disassembled and washed by hand, characterized by: It includes a main unit (2) and a water tank (7), which are detachably connected; The main unit (2) is used to provide pumping power. It has a first outlet end (22) on one side and an inlet end (23) on its upper surface. A sealing component (8) is detachably installed in the inlet end (23). The water tank (7) is used to store liquid. A second water outlet (73) is provided on its lower end face. A first one-way valve (9) is detachably installed at the second water outlet (73). When the water tank (7) is assembled with the main unit (2), the first one-way valve (9) is in the normally open state. When the water tank (7) is separated from the main unit (2), the first one-way valve (9) blocks the second water outlet (73).

2. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to claim 1, characterized in that: The water inlet (23) has a concave design, and the sealing component (8) is installed therein. The sealing assembly (8) has a plug-in position (84); the second water outlet (73) is designed to protrude outward and insert into the plug-in position (84).

3. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to claim 1, characterized in that: The sealing assembly (8) includes a sealing silicone sleeve (81), a filter screen (82) is provided in the sealing silicone sleeve (81), and a protrusion (83) is provided in the filter screen (82); The first one-way valve (9) includes a plug (91) that can abut against the inner wall of the water tank (7) to block the second water outlet (73). The lower end face of the plug (91) is provided with a connecting bracket (92). The bottom of the connecting bracket (92) is provided with several water outlet holes (93). A spring (94) is located between the bottom of the connecting bracket (92) and the outside of the second water outlet (73).

4. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to claim 1, wherein: The bottom of the water tank (7) is provided with a positioning flange (74) along its circumference. The positioning flange (74) encloses and forms a positioning cavity (75). The positioning cavity (75) is adapted to the outer circumferential shape of the upper surface of the main unit (2).

5. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to any one of claims 1-4, characterized in that: The host (2) includes a housing (21), in which a drive device (3) is installed. The water inlet of the drive device (3) is connected to the water inlet end (23) through a water inlet pipe (41). A fixed bracket is installed in the inner cavity of the housing (21). The fixed bracket is used to install the drive device (3). The drive device (3) can move relative to the fixed bracket, and a buffer structure is provided between the two.

6. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to claim 5, wherein: The fixed bracket includes an upper bracket (51) and a lower bracket (52) installed at the upper and lower positions of the housing (21), and a plurality of fixed columns (53) are provided between the two; the plurality of fixed columns (53) are connected to a movable bracket (54), and the movable bracket (54) is used to fix the drive device (3); The buffer structure includes a first elastic element (61) and a second elastic element (62). The first elastic element (61) springs against the drive device (3) and the upper bracket (51), and the second elastic element (62) springs against the drive device (3) and the lower bracket (52).

7. A valve structure for an oral irrigator that is easily disassembled and washed by hand, according to claim 6, wherein: The fixed column (53) and the movable bracket (54) are fixedly connected, and the movable bracket (54) is made of flexible material.

8. The valve body structure for a water flosser that is easy to disassemble and clean by hand according to claim 6, characterized in that: The movable support (54) includes a fixed body (541), and the fixed body (541) is provided with a plurality of sleeves (542) on its outer periphery. The sleeves (542) are used in conjunction with the fixed column (53). The upper part of the fixed column (53) is provided with a limiting boss (531) on its outer periphery. The end of the limiting boss (531) can abut against the outer periphery of the sleeve (542).

9. The valve body structure for a water flosser that is easy to disassemble and clean by hand according to claim 6, characterized in that: The drive device (3) includes a fixed housing (31), on which a drive motor (32) and a movable plug (33) are mounted. A piston rod (34) is provided in the movable plug (33). One end of the piston rod (34) extending out of the movable plug (33) is eccentrically connected to a driven gear (35). The driven gear (35) meshes with a driving gear (36). The driving gear (36) is connected to the output end of the drive motor (32). The movable plug (33) also includes an inlet and an outlet, and the inlet and outlet are respectively provided with a second check valve (37).

10. The valve body structure for a water flosser, designed for easy manual disassembly and cleaning according to claim 3, characterized in that: The sealing silicone sleeve (81) and the filter screen (82) are separable, and the filter screen (82) and the protrusion (83) are integrally formed; a sealing ring (95) is also fitted on the plug body (91).

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