Convenient-to-assemble water tank for oral irrigator

The interlocking connection structure with circular slots and arc protrusions solves the problem of complex existing water tank connection mechanisms, achieving a stable and simple connection between the water tank and the water flosser body, and enhancing the sealing performance.

CN224155805UActive Publication Date: 2026-04-24SHOUHANG CLEAN ENERGY (QUANZHOU) MEDICAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHOUHANG CLEAN ENERGY (QUANZHOU) MEDICAL TECH CO LTD
Filing Date
2025-04-10
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The existing water tank connection mechanism of oral irrigators is complex, and the connection stability is easily affected when the parts are damaged.

Method used

The connection structure adopts a circular slot, arc protrusion and engaging circular groove. The connection between the water tank and the body of the oral irrigator is achieved by the squeezing and engaging of the arc protrusion and the engaging circular groove. This simplifies the connection to only require protrusion and slot, reducing the number of parts.

Benefits of technology

This design achieves a stable connection between the water tank and the water flosser body, simplifies the assembly process, reduces the impact of component damage on connection stability, and improves sealing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a convenient-to-assemble water tank for oral irrigator, which comprises an oral irrigator body, a water tank body arranged at the lower end of the oral irrigator body, and a connecting structure arranged between the oral irrigator body and the water tank body, the oral irrigator body and the water tank body are round bodies, a water storage cavity is arranged on the water tank body, and the water storage cavity is provided with a water outlet. The connecting structure comprises at least two circular open grooves annularly formed in the upper end face of the water tank body at equal intervals, a circular block fixedly arranged on the lower end face of the oral irrigator body, and at least two circular arc protrusions annularly arranged on the circumferential side of the circular block at equal intervals. The at least two clamping circular grooves are annularly formed in the water tank body at equal intervals, and the communicating inclined openings are annularly formed in the water tank body at equal intervals.
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Description

Technical Field

[0001] This utility model relates to the field of oral irrigator technology, specifically to an easy-to-assemble water tank for oral irrigators. Background Technology

[0002] A water flosser is a household oral hygiene device that cleans teeth and the mouth by spraying water or vibrating a brush head. Using a water flosser effectively removes food debris, bacteria, and stains from the tooth surface, achieving a more thorough oral cleaning. At the same time, using a water flosser is convenient and quick, saving brushing time and reaching areas that are difficult to reach with regular brushing.

[0003] Chinese Patent No. CN202420534135.5 discloses a water tank for a water flosser that is easy to assemble, relating to the field of water tank technology. It aims to solve the problem of cumbersome assembly and disassembly of existing water tanks. The key technical points are: a water tank and a water flosser; two connecting rods are symmetrically fixed to the upper part of the water tank, and a limiting block is fixed to the upper part of each connecting rod; two slots are symmetrically opened on the periphery of the water flosser, and slots are opened on both sides of the bottom of the water flosser; the limiting block slides within the slot; and a limiting rod slides within the slot, with a fixing block fixed to one end of each limiting rod. By aligning the limiting block with the slot and inserting it, and pressing the fixing block, the limiting block and the fixing block are engaged, allowing for quick installation of the water tank. Disassembly of the water tank only requires pressing both limiting rods simultaneously. This facilitates both adding water and installing the water tank, making operation simple. Four pads are installed at the bottom of the water tank to ensure stability when the device is placed.

[0004] Although the aforementioned patent allows for convenient installation of the water tank, the connection mechanism consists of multiple parts. When one of these parts is damaged, it can easily affect the stability of the connection between the water tank and the water flosser body, making the structure relatively complex. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings and deficiencies of the existing technology by providing a water tank for a water flosser that is easy to assemble.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a water tank for a water flosser that is easy to assemble, comprising a water flosser body, a water tank body disposed at the lower end of the water flosser body, and a connecting structure disposed between the water flosser body and the water tank body. Both the water flosser body and the water tank body are circular. The water tank body has a water storage cavity. The connecting structure includes at least two circular slots that are equidistantly disposed on the upper end surface of the water tank body and communicate with the water storage cavity; a circular block that is fixedly disposed on the lower end surface of the water flosser body and has a clearance fit with the water storage cavity; at least two arcuate protrusions that are equidistantly disposed on the periphery of the circular block and have a clearance fit with the circular slots; at least two engaging circular grooves that are equidistantly disposed on one side of the circular slots on the water tank body and communicate with the water storage cavity; and a connecting oblique opening that is equidistantly disposed on the water tank body and connects the circular slots to the engaging circular grooves.

[0007] A further improvement is that a rounded chamfer is provided between the connecting bevel and the connecting end of the engaging circular groove, and the rounded chamfer is located on the end face close to the circular groove.

[0008] A further improvement is that each of the circular slots is formed from top to bottom on the upper end face of the water tank body, and the engaging circular slot and the connecting oblique opening are formed on the lower part of the circular slot.

[0009] A further improvement is that a limiting plate is provided on the water tank body inside the water storage cavity. The limiting plate is located below the circular slot and has a flow hole. A first sealing ring is provided on the upper end face of the limiting plate, and a second sealing ring is provided on the upper end face of the water tank body around the circular slot.

[0010] A further improvement is that the arc-shaped protrusion is a nylon protrusion or a rubber protrusion.

[0011] A further improvement is that the surface of the water tank body is also provided with several anti-slip ridges, which are rubber ridges.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are as follows: When it is necessary to connect the oral irrigator body and the water tank body, align the arc protrusion with the arc slot and insert it until the lower end face of the oral irrigator body abuts against the upper end face of the water tank body. Then, hold the oral irrigator body and the water tank body separately by hand and twist them in opposite directions to make the arc protrusion move through the connecting bevel towards the engaging groove until the arc protrusion is engaged and pressed into the engaging groove. When the arc protrusion moves on the connecting bevel, the arc protrusion and... The squeezing force between the water tank body and the water flosser body gradually increases, thereby gradually increasing the engagement force between the water tank body and the water flosser body. When the arc protrusion is locked in the engagement groove, the arc protrusion still maintains the squeezing with the engagement groove, thereby pressing and fixing the circular block in the water storage cavity to achieve the connection between the water flosser body and the water tank body. This connection structure can achieve the connection between the water tank body and the water flosser body only through the protrusion and the groove. It does not need to be composed of multiple parts, and it is not easy to affect the connection stability between the water tank and the water flosser body. The structure is relatively simple.

[0013] Further benefits: The rounded chamfer makes it easier for the rounded protrusion to disengage from the engaging groove when it needs to be moved from the engaging groove to the rounded slot, and reduces the sharpness of the connection end, thus reducing wear on the rounded protrusion.

[0014] Further benefits: After the arc protrusion is aligned with the circular slot and inserted, the engagement of the circular slot and the arc protrusion can guide the installation. When the lower end face of the water flosser body abuts against the upper end face of the water tank body, the water flosser body and the water tank body are then rotated separately, causing the arc protrusion to enter the locking circular groove through the connecting bevel. At this time, the locking circular groove restricts the vertical movement of the arc protrusion, allowing it to move only towards the circular slot. Compared to the connecting bevel and locking circular groove being located on the upper end face of the water tank body from top to bottom, this further improves the connection stability between the water flosser body and the water tank body.

[0015] Further effects: When installing the water flosser body and the water tank body, align the arc protrusion with the circular slot and insert it until the lower end of the circular block presses against the first sealing ring and the lower end of the water flosser body presses against the second sealing ring. Then, twist the water flosser body and the water tank body to make the arc protrusion and the locking groove squeeze and engage, thereby sealing the gap between the circular block and the limiting plate, as well as the gap between the lower end of the water flosser body and the upper end of the water tank body.

[0016] Further benefits: The anti-slip texture prevents the hand from slipping off the tank body when the hand is holding and turning it. Attached Figure Description

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

[0018] Figure 1 This is a front sectional view of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3 This is a top sectional view of the water tank body, circular block, arc protrusion, engaging circular groove, and connecting oblique opening in this utility model.

[0021] Figure 4 It corresponds Figure 3 Another state diagram;

[0022] Figure 5 It corresponds Figure 3 Enlarged view of part A;

[0023] Figure 6 This is a front sectional view of the water tank body, circular block, arc protrusion, and limiting plate in this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Water tank body; 2. Circular slot; 3. Circular block; 4. Arc protrusion; 5. Engaging circular groove; 6. Connecting bevel; 7. Arc chamfer; 8. Limiting plate; 9. Flow hole; 10. First sealing ring; 11. Second sealing ring; 12. Anti-slip texture; 13. Detailed Implementation

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0026] See Figures 1 to 6As shown, the technical solution adopted in this specific embodiment is: a water tank for a water flosser that is easy to assemble, including a water flosser body 1, a water tank body 2 disposed at the lower end of the water flosser body 1, and a connecting structure disposed between the water flosser body 1 and the water tank body 2. Both the water flosser body 1 and the water tank body 2 are circular bodies. A water storage cavity is opened on the water tank body 2. The connecting structure includes at least two circular slots 3 that are equidistantly opened on the upper end surface of the water tank body 2 and communicate with the water storage cavity; a circular block 4 that is fixedly disposed on the lower end surface of the water flosser body 1 and has a clearance fit with the water storage cavity; at least two arcuate protrusions 5 that are equidistantly arranged on the periphery of the circular block 4 and have a clearance fit with the circular slots 3; at least two engaging circular grooves 6 that are equidistantly opened on the water tank body 2 on one side of the circular slots 3 and communicate with the water storage cavity; and a connecting oblique opening 7 that is equidistantly opened on the water tank body 2 and connects the circular slots 3 and the engaging circular grooves 6 respectively.

[0027] like Figure 3 Figure 4 Figure 5 As shown, the radius of the circular slot 3 is larger than the radius of the engaging circular slot 6. The circular position of the circular slot 3 and the circular position of the engaging circular slot 6 are not on the same arc line. The connecting oblique opening 7 is inclinedly set between the arc slot and the engaging circular slot 6. The number of circular slots 3, arc protrusions 5, and engaging circular slots 6 are all the same. When the number is more, the engaging force between the water tank body 2 and the water flosser body 1 is greater, and conversely, the twisting force required is greater. Therefore, the optimal number of circular slots 3, arc protrusions 5, and engaging circular slots 6 in this application is two, three, or four. The circular slots 3, arc protrusions 5, and engaging circular slots 6 are integrally formed with the water tank body 2 and processed by mold demolding or 3D printing. The circular block 4 and arc protrusions 5 are also integrally formed and processed by mold demolding or 3D printing. The circular block 4 and the water flosser body 1 can also be integrally formed or separately bonded and fixed.

[0028] A chamfered corner 8 is provided between the connecting oblique opening 7 and the connecting groove 6. The chamfered corner 8 is located on the end face close to the circular groove.

[0029] Each of the aforementioned circular slots 3 is formed from top to bottom on the upper end face of the water tank body 2, and the engaging circular slot 6 and the connecting oblique opening 7 are formed on the lower part of the circular slot 3. For example... Figure 2 Figure 6 As shown, the height of the engaging circular groove 6 and the connecting oblique opening 7 is greater than the height of the circular protrusion 5, and the height of the circular slot 3 is greater than the height of the engaging circular groove 6 and the connecting oblique opening 7.

[0030] The locking groove 6 and the connecting oblique opening 7 can also be opened from top to bottom on the upper end face of the water tank body 2, following the circular slot 3, and the water tank body 2 and the water flosser body 1 are connected only by the squeezing force.

[0031] A limiting plate 9 is provided on the water tank body 2 inside the water storage cavity. The limiting plate 9 is located below the circular slot 3. A flow hole 10 is provided on the limiting plate 9. A first sealing ring 11 is provided on the upper end face of the limiting plate 9. A second sealing ring 12 is provided on the upper end face of the water tank body 2 around the circular slot 3.

[0032] The arc-shaped protrusion 5 is a nylon protrusion or a rubber protrusion.

[0033] The surface of the water tank body 2 is also provided with several anti-slip ridges 13, which are rubber ridges.

[0034] The working principle of this utility model is as follows: When connecting the oral irrigator body 1 and the water tank body 2, align the arc-shaped protrusion 5 with the arc-shaped slot and insert it until the lower end face of the oral irrigator body 1 abuts against the upper end face of the water tank body 2. Then, hold the oral irrigator body 1 and the water tank body 2 separately by hand and twist them in opposite directions. This causes the arc-shaped protrusion 5 to move through the connecting bevel 7 towards the engaging groove 6 until the arc-shaped protrusion 5 is engaged and pressed into the engaging groove 6. As the arc-shaped protrusion 5 moves along the connecting bevel 7, the arc-shaped protrusion 5 and the water tank body... The squeezing force between 2 gradually increases, thereby gradually increasing the engagement force between the water tank body 2 and the oral irrigator body 1. When the arc protrusion 5 is engaged in the engagement groove 6, the arc protrusion 5 still maintains the squeezing with the engagement groove 6, thereby pressing and fixing the circular block 4 in the water storage cavity to achieve the connection between the oral irrigator body 1 and the water tank body 2. This connection structure can achieve the connection between the water tank body 2 and the oral irrigator body 1 through only the protrusion and the groove. It does not need to be composed of multiple parts, and it is not easy to affect the connection stability between the water tank and the oral irrigator body 1. The structure is relatively simple.

[0035] The rounded chamfer 8 makes it easier for the rounded protrusion 5 to disengage from the engaging groove 6 when it is necessary to move the rounded protrusion 5 from the engaging groove 6 to the rounded slot, and reduces the sharpness of the connecting end, thus reducing the wear on the rounded protrusion 5.

[0036] After the arc protrusion 5 is aligned with the circular slot 3 and inserted, the cooperation between the circular slot 3 and the arc protrusion 5 can achieve the function of guiding installation. When the lower end face of the water flosser body 1 abuts against the upper end face of the water tank body 2, the water flosser body 1 and the water tank body 2 are then twisted respectively, so that the arc protrusion 5 enters the locking groove 6 through the connecting oblique opening 7. At this time, the locking groove 6 restricts the up and down movement of the arc protrusion 5, so that the arc protrusion 5 can only move towards the position of the circular slot 3. Compared with the connecting oblique opening 7 and the locking groove 6 being opened from top to bottom on the upper end face of the water tank body 2, the connection stability between the water flosser body 1 and the water tank body 2 is further improved.

[0037] When installing the water flosser body 1 and the water tank body 2, align the arc protrusion 5 with the position of the circular slot 3 and insert it until the lower end face of the circular block 4 presses on the first sealing ring 11 and the lower end face of the water flosser body 1 presses on the second sealing ring 12. Then, twist the water flosser body 1 and the water tank body 2 so that the arc protrusion 5 and the engaging circular slot 6 are pressed and engaged, thereby sealing the gap between the circular block 4 and the limiting plate 9, as well as the gap between the lower end face of the water flosser body 1 and the upper end face of the water tank body 2.

[0038] This utility model aims to protect the structure of the product. The model numbers of the individual components are not the subject of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a convenient water tank for a water flosser. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A water tank for a water flosser that is easy to assemble, comprising a water flosser body, a water tank body disposed at the lower end of the water flosser body, and a connecting structure disposed between the water flosser body and the water tank body, characterized in that: Both the water flosser body and the water tank body are circular. The water tank body has a water storage cavity. The connecting structure includes at least two circular slots that are equidistantly arranged on the upper end face of the water tank body and communicate with the water storage cavity; a circular block that is fixedly arranged on the lower end face of the water flosser body and has a clearance fit with the water storage cavity; at least two arcuate protrusions that are equidistantly arranged on the periphery of the circular block and have a clearance fit with the circular slots; at least two engaging circular grooves that are equidistantly arranged on one side of the circular slots on the water tank body and communicate with the water storage tank; and a connecting oblique opening that is equidistantly arranged on the water tank body and connects the circular slots to the engaging circular grooves.

2. The easily assembled water tank for a dental flosser according to claim 1, characterized in that: A chamfer is provided between the connecting bevel and the connecting end of the engaging groove, and the chamfer is located on the end face close to the arc groove.

3. The easily assembled water tank for a water flosser according to claim 1, characterized in that: Each of the circular slots is formed from top to bottom on the upper end face of the water tank body, and the engaging circular slot and the connecting oblique opening are formed on the lower part of the circular slot.

4. The easily assembled water tank for a dental flosser according to claim 1, characterized in that: A limiting plate is provided on the water tank body inside the water storage cavity. The limiting plate is located below the circular slot and has a flow hole. A first sealing ring is provided on the upper end face of the limiting plate, and a second sealing ring is provided on the upper end face of the water tank body around the circular slot.

5. The easily assembled water tank for a dental flosser according to claim 1, characterized in that: The arc-shaped protrusion is a nylon protrusion or a rubber protrusion.

6. The easily assembled water tank for a dental flosser according to claim 1, characterized in that: The surface of the water tank body is also provided with several anti-slip ridges, which are rubber ridges.

Citation Information

Patent Citations

  • Convenient-to-assemble water tank for oral irrigator

    CN222565987U