A sealing structure for a pull-out water tank

Abstract

The application relates to a sealing structure for a pull-out type water tank, which is used for sealing the connecting gap between a water pick main body and a water tank, and comprises a sealing ring body, the outer side wall of the sealing ring body is provided with a sealing protrusion, the radial height of the sealing protrusion gradually decreases from the middle part to both sides, a sealing contact surface with a smooth bell-shaped cross section is formed, so that when the water tank moves relative to the water pick main body, the sealing protrusion can realize swinging from the center to both sides; the insertion end of the water pick main body is clamped with the closed end of the water tank through at least one set of axial clamping positions and at least one set of radial clamping positions; the outer side wall of the water pick main body is clamped with the open end of the water tank through at least one set of radial clamping positions; through the cooperation of the axial clamping positions and the radial clamping positions, the water tank is fixed on the water pick main body, and the sealing ring body is sealingly contained at a predetermined position defined by the wall bodies.

Description

Technical Field

[0001] This application belongs to the field of oral irrigator technology and relates to a sealing structure for a pull-out water tank. Background Technology

[0002] Currently, most pull-out water tanks on the market use an O-ring structure for sealing the connection between the tank and the main unit. The water tank or main unit of the water flosser has an annular groove, and the O-ring is installed within this groove. When the water tank is inserted into the main unit, an interference fit is created between the O-ring and the mating surface. The elastic deformation of the rubber material fills the gap, achieving an effective seal under static conditions and preventing water leakage when the tank is not in operation.

[0003] However, this traditional O-ring sealing structure suffers from high pulling resistance in practical use: because the O-ring requires a certain amount of compression to ensure a sealing effect, there is significant static and dynamic friction between it and the mating surface. Users need to overcome considerable resistance when installing or removing the water tank, making the pulling process very strenuous; moreover, severe frictional wear affects the service life of the O-ring, leading to fatigue and aging of the sealing material, reducing its sealing performance, and increasing the risk of leakage.

[0004] In other words, O-rings, as a typical radial seal, are designed to provide a seal for fixed components under static conditions. However, when applied to scenarios such as pull-out water tanks that require frequent axial movement, their circumferentially uniform contact pressure and large frictional contact area become the main factors hindering the smoothness of movement. Utility Model Content

[0005] To overcome the problems existing in the related technologies, this application aims to provide a sealing structure for a pull-out water tank that can reduce frictional resistance.

[0006] This application is achieved through the following technical solution.

[0007] This technical solution provides a sealing structure for a pull-out water tank, used to seal the connection gap between the body of the oral irrigator and the water tank, including: The sealing ring body has a sealing protrusion on its outer side wall. The radial height of the sealing protrusion gradually decreases from the middle to both sides, forming a sealing contact surface with a smooth bell-shaped cross-section, so that when the water tank moves relative to the body of the water flosser, the sealing protrusion can swing from the center to both sides. The insertion end of the main body of the water flosser is engaged with the closed end of the water tank through at least one set of axial fastening and at least one set of radial fastening. The outer wall of the main body of the water flosser is engaged with the opening end of the water tank by at least one set of radial fastening fits; The water tank is fixed to the body of the water flosser by the combined action of the axial and radial fastening fits, and the sealing ring body is sealed and accommodated at a predetermined position defined by the walls of both.

[0008] This technical solution employs a sealing ring body with sealing protrusions, allowing the sealing protrusions, which are protrusions on the outer edge, to perform a sealing function. During the pushing and pulling process, the sealing protrusions are prone to deformation, swinging along with the water tank's pulling process, reducing frictional resistance, making the pushing and pulling smooth, and improving the user experience.

[0009] The present invention is further configured such that the axial fastening engagement consists of a second fastening protrusion and a fastening position, wherein the second fastening protrusion is located at the insertion end of the water flosser body, and the fastening position is located at the closed end of the water tank.

[0010] The present invention is further configured such that the second latching protrusion is a radially inclined spring arm, and the outer side wall of the spring arm is provided with a protrusion.

[0011] The present invention is further configured such that the radial fastening engagement consists of a first fastening protrusion, a third fastening protrusion, and a corresponding fastening position; The first buckle protrusion is provided at the insertion end of the water flosser body, and the closed end of the water tank is provided with a buckle position corresponding to the first buckle protrusion; The third buckle protrusion is located at the opening end of the water tank, and the outer side wall of the water flosser body is provided with a buckle position corresponding to the third buckle protrusion.

[0012] The present invention is further configured such that the outer wall of the sealing ring body has a guide structure composed of two symmetrical inclined surfaces, and the sealing protrusion is formed between the two inclined surfaces; When the water tank moves axially relative to the body of the water flosser, the sealing protrusion can swing.

[0013] The present invention is further configured such that a sealing element is provided on the outer side of the sealing ring body, the sealing element has an opening groove, and concave surfaces are provided on both sides of the sealing element, the concave surfaces being used to cause the sealing element to deform under force.

[0014] The present invention is further configured such that a support member is provided on the outer side of the sealing ring body, and the sealing member is covered by the support member through an opening groove, and the support member is used to support the sealing member.

[0015] The present invention is further configured such that the sealing member has a plane corresponding to the support member, the plane being used to seal the connection gap between the body of the oral irrigator and the water tank, and the support member being used to support the plane.

[0016] The present invention is further configured such that the support member is an annular support structure surrounding the body of the sealing ring, and the support member is elastic.

[0017] The present invention is further configured such that the main body of the water flosser is provided with a mounting groove corresponding to the sealing ring body, and the height of the mounting groove is less than the radial thickness of the sealing ring body.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0019] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0020] Figure 1 This is a schematic diagram of the structure shown in one embodiment of this application; Figure 2 This is a schematic diagram of the main structure of a water flosser shown in one embodiment of this application; Figure 3 This is a schematic diagram of the water tank body structure shown in one embodiment of this application; Figure 4 This is a cross-sectional view of the sealing ring shown in one embodiment of this application; Figure 5 This is a cross-sectional view shown in one embodiment of this application.

[0021] Reference numerals: 1. Water flosser body; 11. First snap-fit ​​protrusion; 12. Second snap-fit ​​protrusion; 13. Mounting groove; 2. Water tank; 21. Third snap-fit ​​protrusion; 3. Sealing ring body; 31. Inclined surface; 32. Sealing protrusion; 33. Support; 34. Sealing element; 341. Opening groove; 342. Concave surface; 343. Flat surface. Detailed Implementation

[0022] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0024] This embodiment discloses a sealing structure for a pull-out water tank, used to seal the connection gap between the main body 1 of the oral irrigator and the water tank 2, such as... Figures 1-5 As shown, it includes: The sealing ring body 3 has a sealing protrusion 32 on its outer side wall. The radial height of the sealing protrusion 32 gradually decreases from the middle to both sides, forming a sealing contact surface with a smooth bell-shaped cross-section, so that when the water tank 2 moves relative to the water flosser body 1, the sealing protrusion 32 can swing from the center to both sides. The insertion end of the water flosser body 1 and the closed end of the water tank 2 are engaged by at least one set of axial fastening and at least one set of radial fastening. The outer wall of the main body 1 of the oral irrigator is engaged with the open end of the water tank 2 by at least one set of radial fastening fits; Through the combined action of axial and radial fastening, the water tank 2 is fixed to the body 1 of the oral irrigator, and the sealing ring body 3 is sealed and accommodated at a predetermined position defined by the walls of both.

[0025] It should be noted that the sealing ring body 3 is installed on the water flosser body 1. The water flosser body 1 is used to accommodate at least a part of the sealing ring body 3 so that the sealing protrusion 32 can play a sealing role. During the process of pulling out the water tank 2, it rubs against the inner wall of the water tank 2, avoiding direct contact between the sealing ring body 3 and the water tank 2, thus reducing the friction.

[0026] By using a sealing ring body 3 with a sealing protrusion 32, the sealing protrusion 32, which is a protrusion on the outer edge, has a sealing effect. During the pushing and pulling process, the sealing protrusion 32 is easy to deform and swing along with the pulling process of the water tank 2, reducing frictional resistance, making the pushing and pulling smooth and improving the user experience.

[0027] like Figures 1-3 As shown, the axial engagement consists of a second engagement protrusion 12 and a locking position. The second engagement protrusion 12 is located at the insertion end of the water flosser body 1, and the locking position is located at the closed end of the water tank 2. It should be noted that the locking position refers to the inner wall of the water tank 2 or a groove formed on the inner wall of the water tank 2, so that the second engagement protrusion 12 and the locking position engage to fix the position between the water tank 2 and the water flosser body 1.

[0028] like Figure 2 and Figure 3 As shown, the second latching protrusion 12 is a radially inclined spring arm, and the outer wall of the spring arm is provided with a protrusion. It should be noted that the second latching protrusion 12 is inclined outward to engage with the water tank 2.

[0029] like Figures 1-3 As shown, the radial fastening fit consists of a first fastening protrusion 11, a third fastening protrusion 21, and a corresponding fastening position; The first latching protrusion 12 is provided at the insertion end of the water flosser body 1, and the closed end of the water tank 2 is provided with a latching position corresponding to the first latching protrusion 12; The third buckle protrusion 21 is located at the opening end of the water tank 2, and the outer side wall of the water flosser body 1 is provided with a buckle position corresponding to the third buckle protrusion 21.

[0030] like Figure 4 As shown, the outer wall of the sealing ring body 3 has a guide structure composed of two symmetrical inclined surfaces 31, and the sealing protrusion 32 is formed between the two inclined surfaces 31. When the water tank 3 moves axially relative to the body 1 of the water flosser, the sealing protrusion 32 can swing.

[0031] It should be noted that the sealing protrusion 32 has a certain height. Therefore, when the water tank 2 moves axially relative to the main body 1 of the oral irrigator, the sealing protrusion 32 tilts under force, increasing the contact area between the sealing protrusion 32 and the water tank 2 to improve the sealing effect. When the water tank 2 is removed, the sealing protrusion 32 swings in the opposite direction, having a smaller contact area compared to the O-ring, thus reducing frictional resistance. Specifically, the side of the sealing protrusion 32 that contacts the water tank 2 when it is removed can be made of a low-friction material or have a corresponding coating added to further reduce friction.

[0032] like Figure 5 As shown, a sealing element 34 is provided on the outer side of the sealing ring body 3. The sealing element 34 has an opening groove 341 and concave surfaces 342 on both sides. The concave surfaces 342 are used to cause the sealing element 34 to deform under force. It should be noted that the sealing element 34 is easy to deform because it has an opening groove. As a result, when the water tank 2 moves axially relative to the water flosser body 1, the sealing element 34 of the sealing ring body 3 deforms, which reduces the friction during the push-pull process and makes it easier to pull the water tank 2 out.

[0033] like Figure 5 As shown, a support member 33 is provided on the outer side of the sealing ring body 3, and the sealing member 34 is covered by the support member 33 through the opening groove 341. The support member 33 is used to support the sealing member 34. It should be noted that when the sealing member 34 is under force, the force can be transmitted to the support member 33, and the support member 33 supports the sealing member 34.

[0034] like Figure 5 As shown, the sealing element 34 has a plane 343 corresponding to the support element 33. The plane 343 is used to seal the connection gap between the main body 1 of the oral irrigator and the water tank 2. The support element 33 is used to support the plane 343. It should be noted that after the sealing element 34 swings, the support element 33 tilts with the sealing element 34. Then, the support element 33 uses its own elasticity to drive the sealing element 34 to gradually adjust its position, so that the support plane 343 abuts against the inner wall of the water tank 2.

[0035] like Figures 1-5 As shown, the support member 33 is an annular support structure surrounding the sealing ring body 3, and the support member 33 is elastic.

[0036] like Figures 1-5 As shown, the main body 1 of the oral irrigator is provided with a mounting groove 13 corresponding to the sealing ring body 3, and the height of the mounting groove 13 is less than the radial thickness of the sealing ring body 3.

[0037] Working principle: By using a sealing ring body 3 with a sealing protrusion 32, the sealing protrusion 32, which is a protrusion on the outer edge, has a sealing effect. During the pushing and pulling process, the sealing protrusion 32 is easy to deform and swing with the pulling process of the water tank 2, reducing frictional resistance, making the pushing and pulling smooth and improving the user experience.

[0038] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A sealing structure for a pull-out water tank, used to seal the connection gap between the main body (1) of a dental flosser and the water tank (2), characterized in that, include: The sealing ring body (3) has a sealing protrusion (32) on its outer side wall. The radial height of the sealing protrusion (32) gradually decreases from the middle to both sides, forming a sealing contact surface with a smooth bell-shaped cross section. When the water tank (2) moves relative to the water flosser body (1), the sealing protrusion (32) can swing from the center to both sides. The insertion end of the water flosser body (1) and the closed end of the water tank (2) are engaged by at least one set of axial fastening and at least one set of radial fastening. The outer wall of the main body (1) of the water flosser is engaged with the opening end of the water tank (2) by at least one set of radial fastening fits; Through the combined action of the axial and radial fastening fits, the water tank (2) is fixed to the body of the water flosser (1), and the sealing ring body (3) is sealed and accommodated at a predetermined position defined by the walls of both.

2. The sealing structure for a pull-out water tank according to claim 1, characterized in that, The axial fastening mechanism consists of a second fastening protrusion (12) and a fastening position. The second fastening protrusion (12) is located at the insertion end of the water flosser body (1), and the fastening position is located at the closed end of the water tank (2).

3. The sealing structure for a pull-out water tank according to claim 2, characterized in that, The second latching protrusion (12) is a radially inclined spring arm, and the outer side wall of the spring arm is provided with a protrusion.

4. The sealing structure for a pull-out water tank according to claim 1, characterized in that, The radial fastening engagement consists of a first fastening protrusion (11), a third fastening protrusion (21), and a corresponding fastening position; The first buckle protrusion (11) is provided at the insertion end of the water flosser body (1), and the closed end of the water tank (2) is provided with a buckle position corresponding to the first buckle protrusion (11); The third buckle protrusion (21) is located at the opening end of the water tank (2), and the outer side wall of the water flosser body (1) is provided with a buckle position corresponding to the third buckle protrusion (21).

5. The sealing structure for a pull-out water tank according to claim 1, characterized in that, The outer wall of the sealing ring body (3) has a guide structure composed of two symmetrical inclined surfaces (31), and the sealing protrusion (32) is formed between the two inclined surfaces (31); When the water tank (2) moves axially relative to the body of the water flosser (1), the sealing protrusion (32) can swing.

6. The sealing structure for a pull-out water tank according to claim 1, characterized in that, The sealing ring body (3) has a sealing element (34) on its outer side. The sealing element (34) has an opening groove (341) and concave surfaces (342) on both sides. The concave surfaces (342) are used to cause the sealing element (34) to deform under force.

7. The sealing structure for a pull-out water tank according to claim 6, characterized in that, The outer side of the sealing ring body (3) is provided with a support member (33), and the sealing member (34) is covered by the support member (33) through the opening groove (341). The support member (33) is used to support the sealing member (34).

8. The sealing structure for a pull-out water tank according to claim 7, characterized in that, The sealing element (34) has a plane (343) corresponding to the support element (33). The plane (343) is used to seal the connection gap between the water flosser body (1) and the water tank (2). The support element (33) is used to support the plane (343).

9. The sealing structure for a pull-out water tank according to claim 7, characterized in that, The support member (33) is an annular support structure surrounding the sealing ring body (3), and the support member (33) is elastic.

10. The sealing structure for a pull-out water tank according to claim 1, characterized in that, The main body (1) of the water flosser is provided with a mounting groove (13) corresponding to the sealing ring body (3), and the height of the mounting groove (13) is less than the radial thickness of the sealing ring body (3).

Images