A push button switch sealing structure and its application

Abstract

The present invention provides a button switch sealing structure, including: a fixing frame, including a supporting base plate and a mounting plate, wherein a triggering space for triggering a button switch is arranged on the mounting plate; a switch bracket, which is arranged above the supporting base plate and connected to the fixing frame, and includes a plurality of supporting slots for accommodating the button switch; and further including: a switch cover, which is arranged between the fixing frame and the switch bracket, wherein the switch cover and the supporting slot form an insulating space for accommodating the button switch, and the switch cover is made of an insulating material. The switch cover is firstly blocked between the button switch and the fixing frame, and the button switch is isolated in the supporting slot. Since the switch cover is made of an insulating material, static electricity cannot enter the supporting slot through the switch cover, and thus static electricity cannot accumulate on the button switch.

Description

Technical Field

[0001] The invention relates to the technical field of anti-static structures of switch elements, and in particular to a button switch sealing structure and application thereof. Background Art

[0002] The generator of the electrostatic air purifier is connected to the high-voltage output end of the voltage doubler module, and the surrounding air is ionized by tip discharge. However, it also causes a large amount of static electricity to accumulate around the generator parts.

[0003] Considering the safety requirements, electrostatic air purifiers generally use push button switches. The push button switch is installed near the purification component (including the generating electrode and the collecting electrode) and is linked to the installation of the purification component. That is, after the purification component is installed, the push button switch is pressed to turn it on, and after the purification component is removed, the push button switch is reset and disconnected. A large amount of static electricity generated by the generating electrode will accumulate on the push button switch and be transmitted to the main board along the connecting line of the switch, interfering with the normal operation of the functional components on the main board and even damaging the chips on the main board.

[0004] The button switch structure in the prior art is as follows: Figure 1 As shown, it includes a fixing frame 1, the fixing frame 1 includes a supporting base plate 11 and a mounting plate 12, and the switch bracket 2 is supported on the supporting base plate 11. The switch bracket 2 is provided with a supporting card slot 21 for placing the button switch 3, and the supporting card slot 21 and the fixing frame 1 form a space for the button switch 3 to be embedded.

[0005] The pressing end 31 of the button switch 3 extends toward the mounting plate 12 , and a limiting protrusion 121 extends from the mounting plate 12 toward the pressing end 31 . The limiting protrusion 121 encloses the pressing end 31 and forms a touch space 122 for the pressing end 31 to be extended and pressed.

[0006] The fixing frame 1 is provided with a first mounting portion 14 and a second mounting portion 15 for mounting the switch bracket 2 . The upper and lower ends of the switch bracket 2 are connected to the second mounting portion 15 and the first mounting portion 14 respectively through positioning screws 13 .

[0007] Static electricity can accumulate on the button switch 3 from the surrounding environment. When the purification component is powered on, the generating electrode and the collecting electrode ionize the air to generate a large amount of static electricity. In order to facilitate the triggering of the button switch 3, an opening is provided at the corresponding push end 31 of the button switch 3 on the fixing frame 1, and the triggering space 122 is extended through the opening to trigger the push end 31. Therefore, static electricity will move along the opening to the button switch 3 and accumulate on the button switch 3. Since the button switch 3 is electrically connected to the main board through a wire, the static electricity accumulated on the button switch 3 will be directed to the main board and affect the operation of the main board. Therefore, a functional structure is required to prevent the button switch from accumulating static electricity. Summary of the invention

[0008] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the button switch in the prior art that static electricity is easily accumulated, thereby providing a button switch sealing structure that is relatively insulated from the surrounding environment and is not easy to accumulate static electricity.

[0009] A push button switch sealing structure, comprising:

[0010] A fixing frame, comprising a supporting bottom plate and a mounting plate, wherein the mounting plate is provided with a triggering space for a trigger button switch and a mounting portion for mounting a switch bracket;

[0011] A switch bracket, arranged above the supporting bottom plate and connected to the fixing frame, comprising a plurality of supporting slots for accommodating a button switch;

[0012] Also includes:

[0013] The switch sheath is arranged between the fixing frame and the switch bracket. The switch sheath and the supporting slot form an insulating space for accommodating the button switch. The switch sheath is made of insulating material.

[0014] The switch cover comprises a sealing cover, which is arranged opposite to the push end of the push button switch, and the sealing cover is protruded in a direction away from the push button switch, and the sealing cover is made of elastic material.

[0015] The sealing cover comprises:

[0016] The plane part is arranged opposite to the pressing end;

[0017] The arc portion is connected to the plane portion in an arc-shaped transition and extends toward the direction away from the plane portion. When the pressing end is pressed, the arc portion undergoes elastic deformation.

[0018] The thickness of the planar portion is not less than the thickness of the arc-shaped portion.

[0019] The switch sheath has a covering portion extending toward one end of the mounting plate, and the mounting plate is provided with a limiting protrusion extending toward the direction of the push button switch, the limiting protrusion forms the touch space, and the covering portion adheres to and encloses the limiting protrusion.

[0020] The limiting protrusion is arranged between the covering portion and the sealing cover.

[0021] The switch sheath is provided with an embedding groove for embedding the button switch, the embedding groove is connected to the sealing cover, and the switch bracket is detachably mounted on the switch sheath.

[0022] A support and positioning surface for supporting the button switch is provided at a position of the bottom of the embedding groove close to the sealing cover.

[0023] The switch sheath and the switch bracket extend out of plug blocks and / or positioning slots that match each other.

[0024] A plurality of ribs extend from the switch bracket, and the ribs are arranged around the supporting slots. The positioning slots are arranged opposite to the ribs, and the positioning slots are arranged in contact with the side walls of the embedding slots.

[0025] The positioning slot and the rib are respectively provided with a correspondingly arranged clearance slot and a threading slot, and the clearance slot and the threading slot are directly opposite to form a channel for the wiring to pass through.

[0026] The switch sheath is recessed at a position facing the supporting base plate to form a matching recess matched with the first mounting portion.

[0027] The support bottom plate is provided with a positioning rib, and the surface opposite to the switch cover is provided with a positioning matching groove matching with the positioning rib, and one end of the positioning rib extends to the position of the mounting plate.

[0028] A sealing cover plate is provided on the top of the switch bracket. An engaging protrusion is protruded from the sealing cover plate. The engaging protrusion is interference-fitted in the mounting groove on the top of the switch bracket.

[0029] At least one positioning protrusion extends from one side of the sealing cover plate toward the switch bracket, and a matching socket for the positioning protrusion to be inserted and matched is provided on the top of the switch bracket.

[0030] A limiting protrusion protrudes from a side end of the sealing cover plate, and a limiting hole for embedding the limiting protrusion is provided on the switch bracket.

[0031] The switch bracket is detachably mounted on the fixing frame via a mounting portion, wherein the mounting portion comprises at least one positioning screw, and the positioning screw passes through the switch bracket and the fixing frame in sequence.

[0032] An air purifier comprises a button switch, wherein the button switch is sealed using the button switch sealing structure of any of the above schemes.

[0033] The technical solution of the present invention has the following advantages:

[0034] 1. The button switch sealing structure provided by the present invention comprises: a fixing frame, comprising a supporting bottom plate and a mounting plate, wherein the mounting plate is provided with a triggering space for triggering the button switch and a mounting portion for mounting a switch bracket; a switch bracket, which is arranged above the supporting bottom plate and connected to the fixing frame, and comprises a plurality of supporting slots for accommodating the button switch; and further comprises: a switch sheath, which is arranged between the fixing frame and the switch bracket, wherein the switch sheath and the supporting slot form an insulating space for accommodating the button switch, and the switch sheath is made of insulating material.

[0035] The switch cover is firstly placed between the push button switch and the fixing frame, and isolates the push button switch in the supporting card slot. Since the switch cover is made of insulating material, static electricity cannot enter the supporting card slot through the switch cover, so static electricity cannot accumulate on the push button switch.

[0036] 2. The button switch sealing structure provided by the present invention, the switch cover includes a sealing cover, the sealing cover is arranged opposite to the pressing end of the button switch, the sealing cover has a protrusion in the direction away from the button switch, and the sealing cover is made of elastic material.

[0037] The operation of the push switch requires a certain working space, away from the sealing cover that protrudes in the direction of the push switch, and reserves enough space for the button switch to move. Since the sealing cover is located in the touch space and protrudes toward the opening provided on the fixing frame. When the push switch is touched from the opening, it is necessary to indirectly contact it by pressing the sealing cover. The sealing cover made of elastic material has the ability to deform. When the action of pressing the push switch occurs, the elastic material undergoes elastic deformation. Therefore, during the process of pressing the push switch, the sealing cover can still maintain the functions of sealing and insulation.

[0038] 3. The sealing structure of the push button switch provided by the present invention, the sealing cover includes: a planar portion, which is arranged opposite to the push end; an arc portion, which is connected to the planar portion in an arc-shaped transition and extends in the direction away from the planar portion, and when the push end is pressed, the arc portion undergoes elastic deformation.

[0039] The arc-shaped sealing cover itself has a certain deformation ability, and the sealing cover itself is made of elastic material, which further enhances the deformation ability of the sealing cover.

[0040] 4. In the push button switch sealing structure provided by the present invention, the thickness of the planar portion is not less than the thickness of the arc-shaped portion.

[0041] Since the plane part is the main force-bearing part when the button is touched, the plane part has a larger thickness to meet the strength requirements when the button switch is frequently pressed.

[0042] 5. The button switch sealing structure provided by the present invention has a covering portion extending from one end of the switch sleeve toward the mounting plate, and a limiting protrusion extending toward the direction of the button switch is provided on the mounting plate, the limiting protrusion forms the touch space, and the covering portion adheres to and encloses the limiting protrusion.

[0043] The covering part and the limiting protrusion cooperate with each other to play a positioning and limiting role. Since the sealing cover itself has the ability to deform, it is easy to deform naturally under the action of gravity. The covering part fits the caliper exactly on the limiting protrusion, which plays a lifting role on the sealing cover, preventing the covering part from deforming naturally, thereby maintaining the raised state.

[0044] 6. In the button switch sealing structure provided by the present invention, the limiting protrusion is arranged between the covering portion and the sealing cover.

[0045] The covering part serves to lift the sealing cover so that the sealing cover maintains an outwardly convex shape. The covering part is connected to the sealing cover, and the connected part is sandwiched between the switch bracket and the limiting protrusion, which further ensures the sealing of the support slot and further prevents static electricity from entering and adhering to the button switch.

[0046] 7. In the button switch sealing structure provided by the present invention, the switch sheath is provided with an embedding groove for embedding the button switch, the embedding groove is connected to the sealing cover, and the switch bracket is detachably mounted on the switch sheath.

[0047] The switch bracket is installed on the switch sheath from top to bottom, the button switch is located in the embedding groove, the switch bracket seals the embedding groove, and the button switch fits and contacts in the supporting card slot of the switch bracket.

[0048] 8. In the button switch sealing structure provided by the present invention, a supporting and positioning surface for supporting the button switch is provided at a portion of the bottom of the embedding groove close to the sealing cover.

[0049] The support positioning surface plays a role of stable support, so that the button switch can be placed flatly and stably in the groove. At the same time, the support positioning surface plays a positioning role. The push end of the button switch placed on the support positioning surface just corresponds to the flat part of the sealing cover.

[0050] 9. In the button switch sealing structure provided by the present invention, the switch sheath and the switch bracket extend out with plug blocks and / or positioning slots that cooperate with each other.

[0051] The matching plug block and slot facilitate the combination and disassembly of the switch bracket and the switch cover, and increase the contact area of ​​the two, so that the switch bracket and the switch cover are more closely combined with each other, and the sealing of the switch cover is further improved.

[0052] 10. In the button switch sealing structure provided by the present invention, a plurality of ribs extend from the switch bracket, the ribs are arranged around the supporting slot, the positioning slot is arranged opposite to the ribs, and the positioning slot is arranged in contact with the side wall of the embedding slot.

[0053] The ribs are thin sheets inserted into the positioning slots made of elastic material. At this time, the ribs can be interference fit to improve the tightness of the combination between the ribs and the positioning slots, thereby improving the sealing of the switch cover. The positioning slot is a structure with a low middle and high side walls. The side walls fit the ribs, further improving the sealing of the switch cover.

[0054] 11. In the button switch sealing structure provided by the present invention, the positioning slot and the surrounding rib are respectively provided with a relatively arranged clearance slot and a threading slot, and the clearance slot and the threading slot are opposite to each other to form a channel for the wiring to pass through.

[0055] A recess is reserved on the switch cover to facilitate electrical connection between the wire and the switch.

[0056] 12. In the button switch sealing structure provided by the present invention, the switch sheath is recessed toward the supporting base plate to form a matching recess matched with the first mounting portion.

[0057] The matching recess on the switch cover can just match the first mounting part, so that the switch cover is stably supported on the supporting bottom plate and the first mounting part. During installation, the switch cover can be positioned by relying on the matching relationship between the matching recess and the first mounting part.

[0058] 13. In the button switch sealing structure provided by the present invention, a positioning rib is provided on the supporting bottom plate, a positioning matching groove matching with the positioning rib is provided on the opposite surface of the switch sheath, and one end of the positioning rib extends to the position of the mounting plate.

[0059] The positioning ribs play a role in positioning the switch cover. At the same time, the positioning ribs extend and connect the mounting plate to improve the structural strength, so that the supporting base plate, the mounting plate and the switch bracket form a mutually supporting stable overall structure.

[0060] 14. In the sealing structure of the button switch provided by the present invention, a sealing cover plate is provided on the top of the switch bracket, and an engaging protrusion is protruded from the sealing cover plate, and the engaging protrusion is interference-fitted in the installation groove on the top of the switch bracket.

[0061] Since the top of the switch bracket is provided with a mounting groove, the bottom of the mounting groove has a through hole connected to the button switch. Static electricity enters through the through hole and adheres to the button switch, which will also affect the operation of the main board. Therefore, the sealing cover plate provided in this scheme covers the mounting groove from the top of the switch bracket. And the engaging protrusion on the sealing cover plate is interference-fitted in the mounting groove, so that the mounting groove is sealed. Static electricity is prevented from passing through the through hole at the bottom of the mounting groove. The sealing cover plate is also made of insulating material.

[0062] 15. In the button switch sealing structure provided by the present invention, the sealing cover plate has at least one positioning protrusion extending from one side toward the switch bracket, and the top of the switch bracket is provided with a matching socket for the positioning protrusion to be inserted and matched.

[0063] The positioning protrusion plays a role in installation positioning. When the positioning protrusion is inserted into the matching socket on the switch bracket, it means that the engaging protrusion and the installation groove are exactly corresponding.

[0064] 16. In the button switch sealing structure provided by the present invention, a limiting bump is protruded from the side end of the sealing cover plate, and a limiting hole for embedding the limiting bump is provided on the switch bracket.

[0065] Since the interlocking protrusion of the sealing cover plate and the mounting groove are interference fit, the interlocking protrusion will be elastically deformed due to friction resistance when pressed into the mounting groove. Under the action of elastic force, the interlocking protrusion has a tendency to move away from the mounting groove. The limiting protrusion and the limiting hole cooperate with each other to prevent the interlocking protrusion and the mounting groove from being separated from each other, thereby ensuring the sealing of the mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0067] Figure 1 A schematic diagram showing a conventional push button switch installation structure;

[0068] Figure 2 A cross-sectional view showing the sealing structure of a push button switch of the present invention;

[0069] Figure 3 An exploded view showing the sealing structure of a push button switch of the present invention;

[0070] Figure 4 A three-dimensional diagram showing the internal structure of the switch sheath;

[0071] Figure 5A three-dimensional diagram showing the structure of the sealing cover;

[0072] Figure 6 A three-dimensional diagram showing the sealing cover plate structure;

[0073] Figure 7 A three-dimensional diagram showing the top structure of the switch bracket;

[0074] Figure 8 It is a schematic diagram of the integrally formed structure of the fixing frame and the switch bracket.

[0075] Description of reference numerals:

[0076] 1. Fixing frame; 11. Supporting bottom plate; 12. Mounting plate; 121. Positioning protrusion; 122. Touching space; 13. Positioning screw; 14. First mounting part; 15. Second mounting part; 16. Positioning convex rib;

[0077] 2. Switch bracket; 21. Support slot; 22. Encircling rib; 23. Threading notch; 24. Mounting groove; 25. Matching jack; 26. Limiting hole;

[0078] 3. Push button switch; 31. Press end;

[0079] 4. switch cover; 41. embedding groove; 411. supporting positioning surface; 42. sealing cover; 421. plane part; 422. arc-shaped part; 43. covering part; 44. positioning slot; 45. giving way notch; 46. matching recess;

[0080] 5. Sealing cover plate; 51. Fitting protrusion; 52. Positioning protrusion; 53. Limiting protrusion. DETAILED DESCRIPTION

[0081] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0083] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0085] Example 1

[0086] This embodiment provides a button switch sealing structure, such as Figure 1 , Figure 2 As shown, it includes: a fixing frame 1, including a supporting base plate 11, a mounting plate 12, and the mounting plate 12 is provided with a triggering space 122 for triggering the button switch 3, and a mounting portion for installing the switch bracket 2; the switch bracket 2 is arranged above the supporting base plate 11 and connected to the fixing frame 1, and includes a plurality of supporting slots 21 for accommodating the button switch 3; and also includes: a switch sheath 4, arranged between the fixing frame 1 and the switch bracket 2, and the switch sheath 4 and the supporting slot 21 form an insulating space for accommodating the button switch 3, and the switch sheath 4 is made of insulating material. The switch sheath 4 is first blocked between the button switch 3 and the fixing frame 1, and the button switch 3 is isolated in the supporting slot 21. Since the switch sheath 4 is made of insulating material, static electricity cannot enter the supporting slot 21 through the switch sheath 4, so static electricity cannot accumulate on the button switch 3.

[0087] There is no specific limitation on the connection between the fixing frame 1 and the switch bracket 2. In this embodiment, the fixing frame 1 and the switch bracket 2 are separately provided. Figure 8 As shown, the fixing frame 1 and the switch bracket 2 are integrally formed. At this time, the switch bracket 2 is a part of the fixing frame 1 , and can be regarded as a support slot 21 provided on the fixing frame 1 .

[0088] In this embodiment, the fixing frame 1 and the switch bracket 2 can also be separately arranged. There is no specific restriction on the connection method when the fixing frame 1 and the switch bracket 2 are separately arranged. In this embodiment, Figure 2 As shown, the switch bracket 2 is detachably mounted on the fixing bracket 1 via a mounting portion, and the mounting portion includes at least one positioning screw 13, and the positioning screw 13 passes through the switch bracket 2 and the fixing bracket 1 in sequence.

[0089] There is no specific limit on the number of positioning screws 13. Figure 2 As shown, there are two positioning screws 13, and the two positioning screws 13 are respectively disposed at the upper and lower positions of the switch bracket 2. As an alternative embodiment, there can be one positioning screw 13, which passes through the switch bracket 2 and fastens the switch bracket 2 to the fixing frame 1.

[0090] There is no specific limitation on the material of the switch sheath 4. In this embodiment, the switch sheath is made of rubber. As an alternative embodiment, the switch sheath 4 can be made of PVC material or ceramic material.

[0091] There is no specific restriction on the structure of the switch sheath 4. Figure 2 , Figure 4 , Figure 5 As shown, the switch cover 4 includes a sealing cover 42, which is arranged opposite to the push end 31 of the button switch 3, and the sealing cover 42 is protruded in the direction away from the button switch 3, and the sealing cover 42 is made of elastic material. The operation of the push switch requires a certain working space, and the sealing cover 42 protrudes in the direction away from the button switch 3, leaving enough space for the button switch 3 to move. Since the sealing cover 42 is located in the touch space 122 and protrudes toward the opening provided on the fixing frame 1. When the button switch 3 is touched from the opening, it is necessary to indirectly touch it by pressing the sealing cover 42. The sealing cover 42 made of elastic material has deformation ability. When the action of pressing the button switch 3 occurs, the elastic material undergoes elastic deformation, so in the process of pressing the button switch 3, the sealing cover 42 can still maintain the functions of sealing and insulation. As an alternative embodiment, the switch cover 4 can be rectangular, and a cavity for placing the button switch 3 is arranged inside, and the part of the switch cover 4 corresponding to the push end 31 is a plane.

[0092] There is no specific restriction on the type of material for making the switch cover 4. In this embodiment, the entire switch cover 4 is made of rubber material. As a replaceable implementation, the switch cover 4 can be made of a variety of different materials according to the different functions of different parts. For example, the main body of the switch cover 4 is made of ceramic and / or PVC material, and the sealing cover 42 and the covering part 43 are made of rubber material.

[0093] There is no specific limitation on the shape and structure of the sealing cover 42. Figure 5As shown, the sealing cover 42 includes: a plane portion 421, which is arranged opposite to the push end 31; an arc portion 422, which is connected to the plane portion 421 in an arc-shaped transition and extends toward the direction away from the plane portion 421. When the push end 31 is pressed, the arc portion 422 undergoes elastic deformation. The arc-shaped sealing cover 42 itself has a certain deformation ability, and the elastic material itself further enhances the deformation ability of the sealing cover 42. As an alternative embodiment, the sealing cover 42 is a semicircular or irregular polyhedron as a whole.

[0094] There is no specific limitation on the thickness of each part of the sealing cover 42. In this embodiment, Figure 2 , Figure 5 As shown, the thickness of the plane portion 421 is not less than the thickness of the arc portion 422. Since the plane portion 421 is the main force-bearing part when the button is touched, the plane portion 421 has a larger thickness to meet the strength requirement when the button switch 3 is frequently pressed. As an alternative embodiment, the thickness of the plane portion 421 is less than the thickness of the arc portion 422. As another alternative embodiment, the thickness of the plane portion 421 gradually decreases in the direction close to the arc portion 422.

[0095] There is no specific restriction on the structure of the switch cover 4. The switch cover 4 has a covering portion 43 extending from one end toward the mounting plate 12. The mounting plate 12 is provided with a limiting protrusion 121 extending toward the direction of the push button switch 3. The limiting protrusion 121 forms the touch space, and the covering portion 43 fits and encloses the limiting protrusion 121. The covering portion 43 and the limiting protrusion 121 cooperate with each other to play a positioning and limiting role. Since the sealing cover 42 itself has the ability to deform, it is easy to deform naturally under the action of gravity. The covering portion 43 just fits the caliper on the limiting protrusion 121, which has a lifting effect on the sealing cover 42, preventing the covering portion 43 from deforming naturally, thereby maintaining the raised state. As an alternative embodiment, the limiting protrusion 121 can be a continuous ring, or a ring structure in which multiple parts are spaced apart to surround the limiting protrusion 121.

[0096] There is no limitation on the specific location of the covering portion 43. Figure 2 As shown, the limiting protrusion 121 is arranged between the covering portion 43 and the sealing cover 42. The covering portion 43 serves to lift the sealing cover 42 so that the sealing cover 42 maintains an outwardly protruding shape. The covering portion 43 is connected to the sealing cover 42, and the connected portion is sandwiched between the switch bracket 2 and the limiting protrusion 121, which further ensures the sealing of the support card slot 21 and further prevents static electricity from entering and adhering to the button switch 3. As an alternative embodiment, a gap between the sealed switch bracket 2 and the limiting protrusion 121 can be separately provided.

[0097] There is no specific restriction on the structure of the switch sheath 4. Figure 2 , Figure 4 , Figure 5 As shown, the switch cover 4 is provided with an embedding groove 41 for embedding the button switch 3, the embedding groove 41 is connected to the sealing cover 42, and the switch bracket 2 is detachably mounted on the switch cover 4. The switch bracket 2 is mounted on the switch cover 4 from top to bottom, the button switch 3 is located in the embedding groove 41, the switch bracket 2 seals the embedding groove 41, and the button switch 3 fits and contacts in the support card slot 21 of the switch bracket 2.

[0098] There is no specific limitation on the structure of the embedding groove 41. Figure 4 , Figure 5 As shown, a support and positioning surface 411 for supporting the button switch 3 is provided at the bottom of the embedding groove 41 near the sealing cover 42. The support and positioning surface 411 plays a role of stable support, so that the button switch 3 can be placed flatly and stably in the embedding groove 41. At the same time, the support and positioning surface 411 plays a positioning role, and the push end 31 of the button switch 3 placed on the support and positioning surface 411 just corresponds to the flat part 421 of the sealing cover 42.

[0099] There is no specific restriction on the connection structure between the switch sheath 4 and the switch bracket 2. Figure 3 , Figure 4 , Figure 5 As shown, the switch cover 4 and the switch bracket 2 extend out mutually matching plug blocks and / or positioning slots 44. The mutually matching plug blocks and slots facilitate the combination and disassembly of the switch bracket 2 and the switch cover 4, and increase the contact area of ​​the two buckles, so that the switch bracket 2 and the switch cover 4 are more closely combined with each other, and the sealing of the switch cover 4 is further improved. As an alternative embodiment,

[0100] There is no specific limitation on the matching structure between the switch bracket 2 and the switch sheath 4. In this embodiment, Figure 3 , Figure 4 , Figure 5 As shown, a plurality of ribs 22 extend from the switch bracket 2 , and the ribs 22 are arranged around the supporting slot 21 . The positioning slot 44 is arranged opposite to the ribs 22 , and the positioning slot 44 is arranged in contact with the side wall of the embedding slot 41 .

[0101] There is no specific limitation on the shape and structure of the ribs 22. Figure 3As shown, the rib 22 is a sheet-like thin plate, which is inserted into the positioning slot 44 made of elastic material. At this time, the rib 22 can be an interference fit, which improves the tightness of the combination between the rib 22 and the positioning slot 44, thereby improving the sealing of the switch cover 4. The positioning slot 44 is a structure with a low middle and high side walls, and the side walls are in contact with the rib 22, further improving the sealing of the switch cover 4.

[0102] The positioning slot 44 and the rib 22 are provided with a relative clearance notch 45 and a threading notch 23, respectively, and the clearance notch 45 and the threading notch 23 are opposite to form a passage for the wiring to pass through. The switch sheath 4 is reserved with a clearance notch 45 to facilitate the electrical connection between the wire and the switch.

[0103] There is no specific restriction on the positioning structure of the switch sheath 4. Figure 2 , Figure 3 As shown, the switch cover 4 is recessed at the portion facing the support base plate 11 to form a matching recess 46 that matches the first mounting portion 14. The matching recess 46 on the switch cover 4 can just match the first mounting portion 14, so that the switch cover 4 is stably supported on the support base plate 11 and the first mounting portion 14. During installation, the switch cover 4 can be positioned based on the matching relationship between the matching recess 46 and the first mounting portion 14. As an alternative embodiment, multiple supporting planes are provided at the bottom of the fixing frame 1 to place the switch cover 4.

[0104] There is no specific limitation on the structure of the supporting base plate 11. Figure 2 , Figure 3 As shown, the support base plate 11 is provided with a positioning rib 16, and the surface opposite to the switch cover 4 is provided with a positioning matching groove matched with the positioning rib 16, and one end of the positioning rib 16 extends to the position of the mounting plate 12. The positioning rib 16 plays the role of positioning the switch cover 4. At the same time, the positioning rib 16 extends and connects the mounting plate 12, which plays the role of improving the structural strength, so that the support base plate 11, the mounting plate 12 and the switch bracket 2 form a mutually supporting stable integral structure. As an alternative embodiment, it can also be a positioning notch, and a positioning foot matched with the positioning notch can be extended from the switch cover 4, so that the positioning notch can realize the positioning and supporting functions.

[0105] Among them, Figure 2 , Figure 6 , Figure 7As shown, a sealing cover plate 5 is provided on the top of the switch bracket 2, and an interlocking protrusion 51 is protruded from the sealing cover plate 5, and the interlocking protrusion 51 is interference-fitted in the mounting groove 24 at the top of the switch bracket 2. Since the mounting groove 24 is provided on the top of the switch bracket 2, a through hole connected to the button switch 3 is provided at the bottom of the mounting groove 24. Static electricity enters through the through hole and adheres to the button switch 3, which will also affect the operation of the main board. Therefore, the sealing cover plate 5 provided in this scheme covers the mounting groove 24 from the top of the switch bracket 2. And the interlocking protrusion 51 on the sealing cover plate 5 is interference-fitted in the mounting groove 24, so that the mounting groove 24 is sealed. Prevent static electricity from passing through the through hole at the bottom of the mounting groove 24. The sealing cover plate 5 is also made of insulating material.

[0106] There is no specific limitation on the material of the sealing cover plate 5. In this embodiment, rubber is used to make the sealing cover plate 5. As an alternative embodiment, the sealing cover plate 5 can be made of PVC material or ceramic material.

[0107] There is no specific limitation on the positioning structure of the sealing cover plate 5. Figure 2 , 6 , Figure 7 As shown, the sealing cover plate 5 extends at least one positioning protrusion 52 on one side facing the switch bracket 2, and the top of the switch bracket 2 is provided with a matching socket 25 for the positioning protrusion 52 to be inserted into. The positioning protrusion 52 plays a role in installation and positioning. When the positioning protrusion 52 is inserted into the matching socket 25 on the switch bracket 2, it means that the fitting protrusion 51 and the installation groove 24 are exactly corresponding. As an alternative embodiment, the number of the positioning protrusion 52 can be more than one, and the positioning protrusion 52 itself can be an expansion screw.

[0108] There is no specific limitation on the positioning structure of the sealing cover plate 5. Figure 2 , Figure 6 , Figure 7 As shown, a limiting protrusion 53 protrudes from the side end of the sealing cover plate 5, and a limiting hole 26 for embedding the limiting protrusion 53 is provided on the switch bracket 2. Since the engaging protrusion 51 of the sealing cover plate 5 and the mounting groove 24 are interference fit, the engaging protrusion 51 will be elastically deformed due to friction resistance when pressed into the mounting groove 24. Under the action of the elastic force, the engaging protrusion 51 has a tendency to move away from the mounting groove 24. The limiting protrusion 53 and the limiting hole 26 cooperate with each other to prevent the engaging protrusion 51 from being disengaged from the mounting groove 24, thereby ensuring the sealing of the mounting groove 24. As an alternative embodiment, a screw or a pressure plate limiter can be set in the vertical direction to prevent the engaging protrusion 51 from being disengaged from the mounting groove 24 from above.

[0109] There is no specific restriction on the type of material used to make the sealing cover plate 5. In this embodiment, the sealing cover plate 5 is supported by a rubber material as a whole. As a replaceable implementation, the main part of the sealing cover plate 5 is made of a ceramic material, the engaging protrusion 51 is supported by a rubber material, and the positioning protrusion 52 and the limiting protrusion 53 are made of a PVC material.

[0110] There is no specific limitation on the application of the sealing structure of the button switch 3. In this embodiment, the sealing structure of the button switch 3 is used in an air purifier, especially an ionization air purifier. As an alternative embodiment, the sealing structure of the button switch 3 can also be applied to an ionization purification fresh air system.

[0111] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A button switch sealing structure, comprising: A fixing frame (1) comprises a supporting base plate (11) and a mounting plate (12), wherein a triggering space (122) for triggering a button switch (3) is provided on the mounting plate (12); A switch bracket (2), arranged above the supporting base plate (11) and on the fixing frame (1), comprising a plurality of supporting slots (21) for accommodating the button switch (3); It is characterized by further comprising: A switch cover (4) is arranged between the fixing frame (1) and the switch bracket (2); the switch cover (4) and the supporting slot (21) form an insulating space for accommodating the push button switch (3); the switch cover (4) is made of an insulating material; the switch cover (4) comprises a sealing cover (42); the sealing cover (42) is arranged opposite to the push end (31) of the push button switch (3); the sealing cover (42) is convex in a direction away from the push button switch (3); the sealing cover (42) is made of an elastic material; the sealing cover (42) comprises an arc portion (422); when the push end (31) is pressed, the arc portion (422) undergoes elastic deformation; The switch sheath (4) has a covering portion (43) extending from one end thereof toward the mounting plate (12); the mounting plate (12) is provided with a limiting protrusion (121) extending toward the direction of the push button switch (3); the limiting protrusion (121) forms the actuating space (122); the covering portion (43) is attached to and encloses the limiting protrusion (121); The switch sheath (4) is provided with an embedding groove (41) for embedding the push button switch (3), the embedding groove (41) is connected to the sealing cover (42), and the switch bracket (2) is detachably mounted on the switch sheath (4).

2. The push button switch sealing structure according to claim 1, characterized in that: The sealing cover (42) comprises: The plane portion (421) is arranged opposite to the pressing end (31); The arc-shaped portion (422) is connected to the plane portion in an arc-shaped transition and extends in a direction away from the plane portion (421).

3. The push button switch sealing structure according to claim 2, characterized in that: The thickness of the planar portion (421) is not less than the thickness of the arc-shaped portion (422).

4. The push button switch sealing structure according to claim 1, characterized in that: The limiting protrusion (121) is arranged between the covering portion (43) and the sealing cover (42).

5. The button switch sealing structure according to claim 1, characterized in that: A supporting positioning surface (411) for supporting the push button switch (3) is provided at a portion of the bottom of the embedding groove (41) close to the sealing cover (42).

6. The button switch sealing structure according to claim 1, characterized in that: Mutually matching insert blocks and / or positioning slots (44) extend from the switch sheath (4) and the switch bracket (2).

7. The push button switch sealing structure according to claim 6, characterized in that: A plurality of ribs (22) extend from the switch bracket (2), the ribs (22) are arranged to surround the support slot (21), the positioning slot (44) is arranged opposite to the ribs (22), and the positioning slot (44) is arranged to fit the side wall of the embedding slot (41).

8. The push button switch sealing structure according to claim 7, characterized in that: The positioning slot (44) and the rib (22) are respectively provided with a correspondingly arranged clearance notch (45) and a threading notch (23), and the clearance notch (45) and the threading notch (23) are opposite to each other to form a passage for the wiring to pass through.

9. The push button switch sealing structure according to claim 1, characterized in that: The portion of the switch cover (4) facing the supporting base plate (11) is recessed to form a matching recess (46) adapted to the first mounting portion (14) provided on the fixing frame (1).

10. The push button switch sealing structure according to any one of claims 1 to 9, characterized in that: A positioning rib (16) is provided on the supporting base plate (11), and a positioning matching groove matching with the positioning rib (16) is provided on the surface opposite to the switch cover (4), and one end of the positioning rib (16) extends to the position of the mounting plate (12).

11. The push button switch sealing structure according to any one of claims 1 to 9, characterized in that: A sealing cover plate (5) is provided on the top of the switch bracket (2), and a fitting protrusion (51) protrudes from the sealing cover plate (5), and the fitting protrusion (51) is interference-fitted in the mounting groove (24) on the top of the switch bracket (2).

12. The push button switch sealing structure according to claim 11, characterized in that: At least one positioning protrusion (52) extends from one side of the sealing cover plate (5) toward the switch bracket (2), and a matching socket (25) for the positioning protrusion (52) to be inserted and matched is provided on the top of the switch bracket (2).

13. The push button switch sealing structure according to claim 11, characterized in that: A limiting protrusion (53) protrudes from a side end of the sealing cover plate (5), and a limiting hole (26) for embedding the limiting protrusion (53) is provided on the switch bracket (2).

14. The button switch sealing structure according to any one of claims 1-9, 12-13, characterized in that: The switch bracket (2) is detachably mounted on the fixing frame (1) via a mounting portion, wherein the mounting portion comprises at least one positioning screw (13), and the positioning screw (13) passes through the switch bracket (2) and the fixing frame (1) in sequence.

15. An air purifier, characterized in that: The invention comprises a push button switch (3), wherein the push button switch (3) is sealed using the push button switch sealing structure according to any one of claims 1 to 12.

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