Sealing member, waterproof sealing assembly and key waterproof sealing structure

Abstract

The sealing component is provided with a pressing force bearing part and a sealing side face, the pressing force bearing part is arranged in the middle of the sealing component, the sealing side face is arranged around the pressing force bearing part, and the sealing side face is provided with a first sealing ring and a second sealing ring; the waterproof sealing assembly comprises a shell and the sealing component, the shell is provided with a first key through hole and a sealing opposite face, the first key through hole corresponds to the pressing force bearing part in position, and the sealing opposite face abuts against the first sealing ring and the second sealing ring; the key waterproof sealing structure comprises a key body and the waterproof sealing assembly, wherein the key body is provided with a key contact part and a key force guiding part abutted against the pressing force bearing part. The sealing component adopts double-layer sealing, so that the waterproof sealing effect can be greatly improved; the waterproof sealing structure of the key not only can ensure waterproof separation of electronic components on the circuit board and the key body, but also can ensure better touch feeling and operation experience feeling of the key part.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a waterproof sealing structure for a button of an oral irrigator. Background Art

[0002] An oral irrigator (commonly known as a water flosser) usually includes a shell, a pump, a water tank, a circuit board, a battery, a motor and a nozzle. The battery is used to power the circuit board and the motor. The pump is usually a reciprocating piston pump. The motor drives the piston in the piston pump to reciprocate through a transmission part, and the water in the water tank is sprayed out from the pointed end of the nozzle in the form of a pulsed water flow, thereby cleaning the teeth, gaps between teeth, gums or tongue.

[0003] The piston pump is composed of a pump cylinder, a piston, an inlet and outlet valves, etc. The motor drives the piston to reciprocate in the pump cylinder. When the piston moves outward relative to the pump cylinder and the working volume of the pump cylinder increases, the inlet valve opens and the outlet valve closes, and water enters the pump cylinder from the water tank under pressure; when the piston moves inward relative to the pump cylinder and the working volume of the pump cylinder decreases, the inlet valve closes and the outlet valve opens, and water is discharged from the pump cylinder under pressure. The reciprocating motion of the piston is combined with the periodic opening and closing of the inlet and outlet valves to realize the function of the piston pump to suck in and discharge liquid. The button of the water flosser is electrically connected to the circuit board, and the button controls the circuit board circuit to be turned on and off or adjust the size of the pulse water flow. The circuit board then controls the current and / or voltage output by the battery to the motor to control the start, stop or speed adjustment of the motor.

[0004] In the prior art, in order to ensure that the key part has good waterproof sealing performance, the key part is generally formed by using a plastic-coated physical key or a sensor key. The cost of the plastic-coated physical key or the sensor key is relatively high, and the operating experience of the sensor key is not as good as that of the physical key. Therefore, a sealing component, a waterproof sealing assembly, and a key waterproof sealing structure with good sealing performance are needed, which can ensure that the key part has good waterproof sealing performance and good operating experience at the same time. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a sealing component, a waterproof sealing assembly and a key waterproof sealing structure with good sealing performance, which can ensure that the key part has good waterproof sealing performance while having a good operating experience.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] The utility model provides a sealing component, which comprises a pressing force bearing part and a sealing side surface. The pressing force bearing part is arranged at the middle part of the sealing component, the sealing side surface is arranged around the pressing force bearing part, and the sealing side surface is provided with a first sealing ring and a second sealing ring.

[0008] The utility model provides a waterproof sealing component, which comprises a shell and the sealing component as described above. The shell is provided with a first key through hole and a sealing opposite surface. The first key through hole corresponds to the position of the pressing force bearing part, and the sealing opposite surface abuts against the first sealing ring and the second sealing ring.

[0009] The utility model also provides a key waterproof sealing structure, which comprises a key body and the waterproof sealing assembly as described above, wherein the key body comprises a key contact portion and a key force guiding portion, and the key force guiding portion abuts against the pressing force bearing portion.

[0010] The utility model has the following beneficial effects:

[0011] The sealing component of the utility model is provided with a first sealing ring and a second sealing ring on the sealing side surface. When the pressure-bearing part is deformed by the external force, the double-layer sealing structure can significantly reduce the influence of the force and deformation on the sealing effect, thereby significantly improving the waterproof sealing effect of the sealing component; the key waterproof sealing structure separates the key body from the internal structure of the shell (such as the circuit control switch on the circuit board) through the sealing component, which can not only ensure the waterproof separation of the internal structure of the shell (such as the electronic components on the circuit board) and the key body, but also ensure a better tactile feel and operating experience of the key part. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the sealing component of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the first embodiment of the sealing component of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the second embodiment of the sealing component of the utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the second embodiment of the sealing component of the utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the third embodiment of the sealing component of the utility model;

[0018] Figure 6 This is a schematic cross-sectional view of the third embodiment of the sealing component of the utility model;

[0019] Figure 7 This is a schematic diagram of the overall structure of the waterproof sealing assembly of the utility model;

[0020] Figure 8 It is a schematic diagram of the cutaway structure of the waterproof sealing component of the utility model;

[0021] Fig. 9 It is a schematic diagram of the cutaway structure of the shell of the waterproof sealing assembly of the utility model;

[0022] Fig.10 for Fig. 9 A partial enlarged view of the middle A;

[0023] Fig.11 This is a schematic diagram of the overall structure of the waterproof sealing structure of a keypad of the utility model;

[0024] Fig.12 This is a schematic diagram of the exploded structure of the waterproof sealing structure of a keypad of the utility model;

[0025] Fig.13 It is a schematic diagram of the cutaway structure of the waterproof sealing structure of a keypad of the utility model;

[0026] Fig.14 for Fig.13 A partial enlarged view of point B in the middle;

[0027] Fig.15 This is a schematic diagram of the key body structure of the key waterproof sealing structure of the utility model;

[0028] Fig.16 This is a schematic diagram of the cover structure of the keypad waterproof sealing structure of the utility model;

[0029] Fig.17 for Fig.16 A partial enlarged view of point C in the middle. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Figure 1 and Figure 2 The specific structure of the sealing component embodiment 1 of the present utility model is shown.

[0032] like Figure 1 and Figure 2As shown, the sealing component 10 of the utility model has a pressing force-bearing part 11 and a sealing side surface 12. The pressing force-bearing part 11 is arranged in the middle part of the sealing component 10, and the sealing side surface 12 is arranged around the pressing force-bearing part 11. The sealing side surface 12 is provided with a first sealing ring 121 and a second sealing ring 122.

[0033] The sealing component 10 of the utility model is provided with a first sealing ring 121 and a second sealing ring 122 on the sealing side surface 12. When the pressure-bearing part 11 is deformed by an external force, the double-layer sealing structure can significantly reduce the influence of the deformation on the sealing effect, thereby significantly improving the waterproof sealing effect of the sealing component 10.

[0034] The understanding of "first sealing ring" and "second sealing ring" should not be limited to only two layers of sealing rings, but should be understood as at least two layers of sealing rings, such as Figure 1 and Figure 2 In the first embodiment shown, the sealing side surface 12 is actually provided with three layers of sealing rings.

[0035] The understanding of "sealing side" refers to the side surface used to set the "first sealing ring" and the "second sealing ring", and its preferred implementation is the outer side surface in Example 1. In other embodiments, the "sealing side" can also be defined as follows: Figure 3 and 4 The inner surface of the second embodiment shown, or limited to Figure 5 and 6 The inner and outer surfaces of the third embodiment are shown.

[0036] Preferably, a sealing connection portion 13 is provided between the pressure bearing portion 11 and the sealing side surface 12, and the thickness T1 of the sealing side surface 12 is greater than the thickness T2 of the sealing connection portion 13. Figure 2 As shown, the thickness T2 of the sealing connection part 13 is smaller than the thickness T1 of the sealing side surface 12, so that a "hanging ear" shape can be formed, which is convenient for fixing the sealing component 10. The "hanging ear" shape of the sealing component 10 can make the connection between the first sealing ring 121 and the second sealing ring 122 and other components (such as the shell in this embodiment) more convenient and tight, and the sealing connection part 13 with a thinner thickness in the middle can also play a role in installation and positioning. In addition, the "hanging ear" structure can minimize the force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122 when the pressure-bearing part 11 is deformed by the force, so that the sealing component 10 maintains a good sealing effect.

[0037] In order to facilitate the fixed connection of the sealing connection part 13 with other components, the sealing connection part 13 is provided with a first connection surface 131 and a second connection surface 132 arranged opposite to the first connection surface 131, and the second connection surface 132 is provided with a connection protrusion 133. In this preferred embodiment, the connection protrusion 133 enables the sealing connection part 13 to further strengthen the sealing and stability of the connection with other components (such as the housing in this embodiment), and can also play a role in installation and positioning. In addition, when the pressing force bearing part 11 is deformed by the force, the connection protrusion 133 can provide a reaction force that hinders the deformation of the pressing force bearing part 11 from being transmitted to the sealing side surface 12, and minimizes the force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122, so that the sealing component 10 maintains a good sealing effect. The understanding of "connection protrusion" not only includes the "convex" shape shown in this embodiment, but in different embodiments, the connection protrusion 133 can also be set to a "concave" shape, and the corresponding part connected with the connection protrusion 133 is set to a "convex" shape.

[0038] In this preferred embodiment, the first sealing ring 121 and the second sealing ring 122 are both configured as arc-shaped protrusions, and the first sealing ring 121 and the second sealing ring 122 have the same curvature. The understanding of "same curvature" refers to the fact that the radius of the arc portion of the first sealing ring 121 and the second sealing ring 122 is the same. Configuring the first sealing ring 121 and the second sealing ring 122 as arc-shaped protrusions can facilitate the installation of the sealing component 10 while achieving a good sealing effect; the first sealing ring 121 and the second sealing ring 122 have the same curvature, which can make the compression amount of the first sealing ring 121 and the second sealing ring 122 substantially the same when the sealing component is in a compressed and sealed state, so as to avoid the situation where one of the sealing rings is not sealed tightly.

[0039] Preferably, the pressure bearing portion 11 has a first bearing surface 111 and a second bearing surface 112 opposite to the first bearing surface 111, and the first bearing surface 111 is recessed inward to form a bearing groove 113 (the second bearing surface 112 is convex at this time). In this preferred embodiment, the bearing groove 113 is in a "concave" shape, which can hinder the transmission of external forces, thereby reducing the pulling force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122, so that the sealing component 10 maintains a good sealing effect. In other embodiments, the pressure bearing portion can be a curved surface or a surface of other shapes, or even a plane, as long as it can withstand external pressure.

[0040] Figure 3 and Figure 4 The specific structure of the second embodiment of the sealing component of the present utility model is shown.

[0041] like Figure 3 and Figure 4As shown, the sealing member 10 of the utility model has a pressing force bearing part 11 and a sealing side surface 12. The pressing force bearing part 11 is arranged in the middle part of the sealing member 10, and the sealing side surface 12 is arranged around the pressing force bearing part 11. The sealing side surface 12 is provided with a first sealing ring 121 and a second sealing ring 122. The difference between the second embodiment and the first embodiment is that the sealing side surface 12 is arranged on the inner surface.

[0042] Figure 5 and Figure 6 The specific structure of the third embodiment of the sealing component of the present utility model is shown.

[0043] like Figure 5 and Figure 6 As shown, the sealing member 10 of the utility model has a pressing force bearing part 11, a sealing outer side surface 12a and a sealing inner side surface 12b. The pressing force bearing part 11 is arranged in the middle part of the sealing member 10, and the sealing outer side surface 12a and the sealing inner side surface 12b are arranged around the pressing force bearing part 11. The sealing outer side surface 12a is provided with a first outer sealing ring 121a and a second outer sealing ring 122a, and the sealing inner side surface 12b is provided with a first inner sealing ring 121b and a second inner sealing ring 122b. The difference between the third embodiment and the first embodiment is that the inner and outer surfaces of the sealing member 10 are both provided with sealing side surfaces. In this embodiment, the sealing outer side surface 12a and the sealing inner side surface 12b can both be used as sealing side surfaces.

[0044] Figures 7 to 10 The specific structure of the waterproof sealing component of the utility model is shown.

[0045] like Figure 2 , Figures 7 to 10 As shown, the waterproof sealing assembly of the utility model includes a housing 20 and the sealing member 10 as described above. The housing 20 is provided with a first key through hole 21 and a sealing opposite surface 22. The first key through hole 21 corresponds to the position of the pressing force bearing part 11, and the sealing opposite surface 22 abuts against the first sealing ring 121 and the second sealing ring 122. In this preferred embodiment, the sealing opposite surface 22 is an annular inner surface, and the first sealing ring 121 and the second sealing ring 122 are in a compressed and sealed state when abutting against the sealing opposite surface 22. Under the sealing action of the sealing member 10, the first key through hole 21 can have a good waterproof and sealing effect.

[0046] As described above, in this preferred embodiment, a sealing connection portion 13 is provided between the pressing force bearing portion 11 and the sealing side surface 12, and the thickness of the sealing side surface 12 is greater than the thickness of the sealing connection portion 13. Correspondingly, a shell spacer portion 23 is provided between the first key through hole 21 and the sealing opposite surface 22, and the shell spacer portion 23 abuts against the sealing connection portion 13. As described above, the thinner sealing connection portion 13 and the sealing side surface 12 form a "hanging ear" shape, so that the connection between the first sealing ring 121, the second sealing ring 122 and the shell 20 can be more convenient and tight, and the thinner sealing connection portion 13 in the middle can also play a role in installation and positioning. Also as described above, the sealing component 10 adopts a "hanging ear" structure, which can minimize the force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122 when the pressing force bearing portion 11 is deformed by the force, so that the sealing component 10 maintains a good sealing effect.

[0047] Furthermore, the sealing connection part 13 is provided with a first connection surface 131 and a second connection surface 132 arranged opposite to the first connection surface 131, the second connection surface 132 is provided with a connection protrusion 133, and the surface of the shell spacer 23 in contact with the second connection surface 132 is provided with a spacing groove 231, and the spacing groove 231 is matched and connected with the connection protrusion 133. As described above, the corresponding matching connection between the connection protrusion 133 and the spacing groove 231 can increase the sealing and stability of the connection between the sealing component 10 and the shell 20, and can also play a role in the installation and positioning of the sealing component 10. Similarly, when the pressing force-bearing part 11 is deformed by the force, the connection protrusion 133 can provide a reaction force that hinders the deformation of the pressing force-bearing part 11 from being transmitted to the sealing side surface 12, and minimizes the external force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122, so that the sealing component 10 maintains a good sealing effect. As described above, in different embodiments, the connecting protrusion 133 can be set to an "inwardly concave" shape, and the corresponding spacing groove 231 that is matched with the connecting protrusion 133 can be set to an "outwardly convex" shape; correspondingly, the understanding of the "spacer groove" can be the "inwardly concave" shape shown in this embodiment, and can also be set to a corresponding "outwardly convex" shape.

[0048] Figures 11 to 17 The specific structure of the key waterproof sealing structure of the utility model is shown.

[0049] like Figure 2 , Figures 11 to 17As shown, the key waterproof sealing structure of the utility model includes a key body 30 and the waterproof sealing assembly as described above, the key body 30 has a key contact portion 31 and a key force guiding portion 32, and the key force guiding portion 32 abuts against the pressing force bearing portion 11. The key contact portion 31 is mainly used to receive the external pressing force, and the key force guiding portion 32 transmits the pressing force to the inside of the housing 20 (for example, the circuit control switch of the circuit board) through the pressing force bearing portion 11, thereby realizing the relevant functions of the machinery or circuit (for example, the on-off control of the circuit of the circuit board). At the same time, the key waterproof sealing structure separates the key body 30 from the internal structure of the housing (for example, the circuit control switch on the circuit board) through the sealing component 10, which can ensure both a good waterproof sealing effect and a better touch and operation experience of the key part.

[0050] Preferably, the pressing force-bearing part 11 has a first force-bearing surface 111 and a second force-bearing surface 112 opposite to the first force-bearing surface 111, the first force-bearing surface 111 is recessed inward to form a force-bearing groove 113 (at this time, the second force-bearing surface 112 is in a convex state), and the key force-guiding part 32 is placed in the force-bearing groove 113. As described above, in other embodiments, the pressing force-bearing part 11 can be a plane, an arc-shaped surface or a surface of other shapes. In this preferred embodiment, placing the key force-guiding part 32 in the force-bearing groove 113 can increase the stability of the key force-guiding part 32 during movement, and at the same time increase the accuracy of the alignment of the key force-guiding part 32 with the internal structure of the shell 20 (such as a circuit board control switch). In addition, the force-bearing groove 113 is preferably in the shape of a "concave" character in this embodiment, and the key body 30 is as follows Fig.14 When a force is applied in the z-axis direction, the load-bearing groove 113 can transfer the force from the z-axis to the y-axis direction. The transfer of the force direction and the elastic force of the load-bearing groove 113 itself can effectively hinder the transmission of the force, thereby reducing the external force and deformation transmitted to the first sealing ring 121 and the second sealing ring 122, so that the sealing component 10 maintains a good sealing effect.

[0051] The key body 30 can be fixed in a variety of ways. In this preferred embodiment, the key waterproof sealing structure further includes a cover 40 fixedly connected to the housing 20, and the cover 40 limits and fixes the key body 30. Specifically, the key contact portion 31 is provided with a key fixing ear 311, and the cover 40 is provided with a key fixing groove 41 for placing the key fixing ear 311; the cover 40 is provided with a second key through hole 42, and the key contact portion 31 is placed in the second key through hole 42.

[0052] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A sealing member, characterized in that: It has a pressing force bearing part and a sealing side surface, wherein the pressing force bearing part is arranged at the middle part of the sealing component, the sealing side surface is arranged around the pressing force bearing part, and the sealing side surface is provided with a first sealing ring and a second sealing ring.

2. The sealing member according to claim 1, characterized in that: A sealing connection portion is provided between the pressing force bearing portion and the sealing side surface, and a thickness of the sealing side surface is greater than a thickness of the sealing connection portion.

3. The sealing member according to claim 1, characterized in that: A sealing connection portion is provided between the pressing force bearing portion and the sealing side surface. The sealing connection portion is provided with a first connection surface and a second connection surface arranged opposite to the first connection surface. The second connection surface is provided with a connection protrusion.

4. The sealing member according to claim 2, characterized in that: The sealing connection portion is provided with a first connection surface and a second connection surface arranged opposite to the first connection surface, and the second connection surface is provided with a connection protrusion.

5. The sealing member according to claim 1, characterized in that: The first sealing ring and / or the second sealing ring is an arc-shaped protrusion.

6. The sealing member according to claim 1, characterized in that: The first sealing ring and the second sealing ring are both arc-shaped protrusions, and the first sealing ring and the second sealing ring have the same arc.

7. The sealing member according to claim 1, characterized in that: The pressing force-bearing portion comprises a first force-bearing surface and a second force-bearing surface opposite to the first force-bearing surface, and the first force-bearing surface is indented inwardly to form a force-bearing groove.

8. A waterproof sealing assembly, characterized in that: It comprises a shell and a sealing component as claimed in claim 1, wherein the shell is provided with a first key through hole and a sealing opposite surface, the first key through hole corresponds to the position of the pressing force bearing portion, and the sealing opposite surface abuts against the first sealing ring and the second sealing ring.

9. The waterproof sealing assembly according to claim 8, characterized in that: A sealing connection portion is provided between the pressing force bearing portion and the sealing side surface, a shell spacer portion is provided between the first key through hole and the sealing opposite surface, and the shell spacer portion abuts against the sealing connection portion.

10. The waterproof sealing assembly according to claim 9, characterized in that: The thickness of the sealing side surface is greater than the thickness of the sealing connection portion.

11. The waterproof sealing assembly according to claim 9 or 10, characterized in that: The sealing connection portion is provided with a first connection surface and a second connection surface arranged opposite to the first connection surface, the second connection surface is provided with a connection protrusion, and the surface of the shell partition portion in contact with the second connection surface is provided with a spacing groove, and the spacing groove is cooperatively connected with the connection protrusion.

12. The key waterproof sealing structure is characterized by: It comprises a key body and a waterproof sealing assembly as claimed in any one of claims 8 to 11, wherein the key body has a key contact portion and a key force guiding portion, and the key force guiding portion abuts against the pressing force bearing portion.

13. The key waterproof sealing structure according to claim 12, characterized in that: The pressing force-bearing portion comprises a first force-bearing surface and a second force-bearing surface opposite to the first force-bearing surface. The first force-bearing surface is recessed inwardly to form a force-bearing groove, and the key force-guiding portion is disposed in the force-bearing groove.

14. The key waterproof sealing structure according to claim 12, characterized in that: It also includes a covering member fixedly connected to the shell, and the covering member limits and fixes the button body.

15. The key waterproof sealing structure according to claim 14, characterized in that: The key contact portion is provided with a key fixing ear, and the cover is provided with a key fixing groove for accommodating the key fixing ear.

16. The key waterproof sealing structure according to claim 14, characterized in that: The cover is provided with a second key through hole, and the key contact portion is disposed in the second key through hole.

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