CN216288093U - Dustproof light touch switch - Google Patents

Abstract

The utility model discloses a dustproof light-touch switch, which comprises a base, a cover plate, a button, an elastic sheet and a bracket, and is characterized in that: the button comprises a contact part and a pressing part, the pressing part is abutted against the elastic sheet, the cover plate is provided with a through hole, the contact part is narrow at the top and wide at the bottom, the contact part penetrates through the through hole, the inner side of the cover plate is also provided with a groove, the contact part is provided with a sealing baffle matched with the groove, the inner side wall of the cover plate is provided with a second sealing ring, and the second sealing ring is arranged between the cover plate and the sealing baffle.

Description

Dustproof light touch switch

Technical Field

The present invention relates to a tact switch, and more particularly, to a dustproof tact switch.

Background

The light touch switch is a standard electronic switch, generally comprising a base, a conductive lug, a metal elastic sheet, a cover body, a switch button and other parts, wherein the switch button is lightly pressed to deform the metal elastic sheet under stress to realize switch-on when in use, the switch is switched off when being loosened, and the metal elastic sheet is reset under self elastic force to realize switch-off.

The middle of the existing touch switch cover plate is provided with a through hole which is mainly used for guiding a button, and because the button needs to move smoothly, an obvious gap exists between the through hole in the middle of the cover plate and the button, so that a switch functional component does not have a closed space, a product is contacted with dust in the air in the use process, the product is possibly invalid, the dustproof effect cannot be achieved, and the service life and the safety of the product cannot be effectively guaranteed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides the dustproof light-touch switch which can prevent dust from entering from the through hole or the connecting gap between the base and the cover plate, so that the multidirectional dustproof effect of the light-touch switch is realized, and the dustproof effect is good.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dustproof switch that dabs, includes base, apron, button, shell fragment and support, its characterized in that: the button comprises a contact part and a pressing part, the pressing part is in butt joint with the elastic sheet, the cover plate is provided with a through hole, the contact part is narrow at the top and wide at the bottom, the contact part penetrates through the through hole, a groove is further formed in the inner side of the cover plate, a sealing baffle matched with the groove is arranged on the contact part, a second sealing ring is arranged on the inner side wall of the cover plate, and the second sealing ring is located between the cover plate and the sealing baffle.

Through adopting above-mentioned technical scheme, when the tact switch is idle, the inside wall of contact site and through-hole offsets, seal the through-hole, block in the dust gets into the tact switch from through-hole department, form tortuous gap between recess and the seal baffle simultaneously, increaseed the degree of difficulty that the dust got into in the base, further promoted dustproof effect, the setting up of second sealing washer makes the button press the in-process, seal baffle offsets with the second sealing washer all the time, make the button also have good leakproofness in the activity messenger.

The utility model is further configured to: the cover plate is provided with an annular groove, the annular groove is arranged right opposite to the base, the annular groove is matched with the end face of the base, and a first sealing ring is further arranged between the annular groove and the base.

Through adopting above-mentioned technical scheme, the annular on the apron is connected with the base, forms tortuous clearance between annular and the base and makes inside the difficult base that gets into of dust to sealed effect between apron and the base has been strengthened through first sealing washer, avoids the dust to get into the base and influences the shell fragment and normally work.

The utility model is further provided that the cover plate is abutted against the elastic sheet, and a third sealing ring is arranged between the annular groove and the elastic sheet.

Through adopting above-mentioned technical scheme, the setting up of third sealing washer makes the inside relative shell fragment external seal of shell fragment to even also be difficult to get into the shell fragment in the dust gets into the base inside, avoid the contact failure between shell fragment and the contact.

The utility model is further configured to: the contact site is connected with the cloth cover, the cloth cover includes rubber band and dustproof cloth, the rubber band offsets with the lateral wall of contact site and sets up, the one end and the rubber band fixed connection of dustproof cloth, its other end and apron fixed connection.

Through adopting above-mentioned technical scheme, the cloth cover blocks the dust of through-hole top, avoids the dust directly to get into in the apron from the through-hole top whereabouts.

The utility model is further configured to: the contact part is provided with a plurality of fastening grooves, the fastening grooves are formed in the side wall of the contact part and distributed from bottom to top, and the fastening grooves are matched with the rubber band.

Through adopting above-mentioned technical scheme, when the rubber band is ageing the back to the pressure of contact part diminish, the user can smooth out the rubber band downwards and with the fastening groove lock of lower floor, increase the pressure of rubber band to the contact part to the cloth cover still has good leakproofness to the button, and cloth cover life is more of a specified duration.

The utility model is further configured to: the through hole is matched with the contact part, a bulge is further arranged above the through hole and is annular, and the bulge is matched with the contact part.

By adopting the technical scheme, compared with a vertical through hole, the through hole has the advantages that the gap between the upper side wall of the through hole and the contact part is smaller, dust falling along the contact part is reduced, the bulge has a shielding effect on the dust above and on the side surface of the through hole, and the dust accumulated at the through hole is reduced.

In conclusion, the utility model has the following beneficial effects:

according to the utility model, the button is narrow at the top and wide at the bottom, and the button is abutted against the inner side wall of the through hole, so that the through hole is sealed by the button on the premise of smooth movement, dust is prevented from entering the tact switch, and the dust entering the base is increased by the zigzag gap formed between the groove and the sealing baffle, and the dustproof effect is further improved.

The user is at the in-process of pressing the button, and the second sealing washer offsets with the sealed baffle side all the time, forms the next protection that prevents the dust entering base, has strengthened the inside leakproofness of dabbing the switch.

The annular groove at the bottom of the cover plate is abutted against the end face of the base, a zigzag gap is formed between the annular groove and the base, so that dust is not easy to directly enter the base from a connecting part, and the sealing property of the connecting part of the cover plate and the base is enhanced by the arrangement of the first sealing ring, so that the dust is prevented from entering the base to influence the normal work of the elastic sheet; and set up the third sealing washer between apron and the shell fragment for the inside relative shell fragment outside seal of shell fragment avoids the dust to get into and influences the contact failure between shell fragment and the contact in the shell fragment.

According to the utility model, the cloth cover is arranged to isolate the outer part of the button from dust, and the plurality of fastening grooves are arranged, so that the rubber band of the cloth cover is buckled with the fastening groove at the lower layer after the elasticity of the rubber band is attenuated, the rubber band can still generate larger pressure on the contact part, the cloth cover still has good sealing property on the button, and the service life of the cloth cover is prolonged.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic sectional view of the present embodiment;

FIG. 3 is an enlarged view of FIG. 2 at A;

fig. 4 is an enlarged view of fig. 2 at B.

Reference numerals: 1. a base; 2. a cover plate; 21. a through hole; 211. a protrusion; 22. a groove; 23. a ring groove; 24. a first seal ring; 25. a second seal ring; 26. a third seal ring; 3. a button; 31. a contact portion; 311. a fastening groove; 32. a pressing part; 33. sealing the baffle; 4. a cloth cover; 41. a rubber band; 42. dustproof cloth.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a dustproof switch that dabs, as shown in fig. 1-4, including base 1, apron 2, button 3, shell fragment and support, its characterized in that: the button 3 includes contact site 31 and presses the portion 32, press portion 32 and shell fragment looks butt, apron 2 is equipped with through-hole 21, contact site 31 is narrow width form down, just contact site 31 runs through the setting of through-hole 21, the inboard of apron 2 still is equipped with recess 22, contact site 31 be equipped with recess 22 assorted seal baffle 33, the inside wall of apron 2 is equipped with second sealing washer 25, second sealing washer 25 is located and sets up between apron 2 and the seal baffle 33, and the bottom opening of recess 22 is just to base 1, forms tortuous clearance between seal baffle 33 and the recess 22 to in the difficult entering base 1 of dust, second sealing washer 25 offsets with the side of seal baffle 33 all the time in the 3 downward pressing process of button.

Further, apron 2 is equipped with annular 23, annular 23 is just to base 1 setting, just annular 23 and base 1's terminal surface phase-match, still be equipped with first sealing washer 24 between annular 23 and the base 1.

Further, the cover plate 2 is abutted to the elastic sheet, and a third sealing ring 26 is further arranged between the annular groove 23 and the elastic sheet.

Further, contact site 31 is connected with cloth cover 4, cloth cover 4 includes rubber band 41 and dustproof cloth 42, rubber band 41 offsets with the lateral wall of contact site 31 and sets up, dustproof cloth 42's one end and rubber band 41 fixed connection, its other end and apron 2 fixed connection.

Further, the contact portion 31 is provided with a plurality of fastening grooves 311, the fastening grooves 311 are located on the side wall of the contact portion 31 and distributed from bottom to top, and the fastening grooves 311 are matched with the rubber band 41.

Further, the through hole 21 is matched with the contact part 31, the cross section of the through hole 21 is trapezoidal, when the button 3 is static, the side wall below the through hole 21 is abutted against the lower part of the contact part 31, a protrusion 211 is further arranged above the through hole 21, the protrusion 211 is annular, and the protrusion 211 is matched with the contact part 31

The working principle is as follows: during installation, as shown in fig. 2, the elastic sheet is placed in the base 1, the button 3 penetrates through the through hole 21 to enable the button 3 to penetrate through the cover plate 2, then the annular groove 23 at the bottom of the cover plate 2 is aligned to the upper end face of the base 1, the cover plate 2 and the base 1 are fixedly connected, the rubber band 41 is buckled in the fastening groove 311 after fixation is completed, and the cloth cover 4 is used for isolating the upper side of the through hole 21 to prevent dust from entering.

As shown in fig. 2, the through hole 21 is sealed by the narrow-top and wide-bottom arrangement of the button 3, so that dust entering from the through hole 21 is reduced, a zigzag gap is formed between the groove 22 and the sealing baffle 33, and the dustproof effect of the tact switch is further enhanced, when the tact switch works, the sealing baffle 33 moves downwards and is always kept against the second sealing ring 23, and the second sealing ring 23 protects the dust from entering the base 1, so that the dust is prevented from entering the tact switch on the premise of not influencing the smooth movement of the button 3; through the arrangement of the ring groove 23, a connecting gap between the base 1 and the cover plate 2 is bent, so that dust is not easy to enter the base 1, and a first sealing ring 24 is arranged at the connecting part of the ring groove 23 and the base 1 for protection, so that the sealing performance between the base 1 and the cover plate 2 is enhanced; as shown in fig. 4, the third sealing ring 26 disposed between the cover plate 2 and the elastic sheet seals the inside of the elastic sheet from the outside of the elastic sheet, so that dust cannot enter the inside of the elastic sheet even entering the base, and the elastic sheet and the contact keep good contact; keep apart the outside dust of button 3 through setting up of cloth cover 4 to after the ageing elasticity decay of rubber band 41, the user can smooth out down with rubber band 41 with the fastening groove 311 lock of lower floor, thereby the rubber band 41 is opened greatly still can produce great pressure to contact portion 31, and cloth cover 4 still has good leakproofness to button 3, has prolonged the life of cloth cover 4.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like made within the design concept of the present invention should be included in the scope of the present invention.

Claims (6)

1. The utility model provides a dustproof switch that dabs, includes base (1), apron (2), button (3), shell fragment and support, its characterized in that: button (3) include contact site (31) and press splenium (32), press splenium (32) and shell fragment looks butt, apron (2) are equipped with through-hole (21), contact site (31) are narrow down wide form, just contact site (31) run through-hole (21) and set up, the inboard of apron (2) still is equipped with recess (22), contact site (31) be equipped with recess (22) assorted seal baffle (33), the inside wall of apron (2) is equipped with second sealing washer (25), second sealing washer (25) are located and set up between apron (2) and seal baffle (33).

2. The dust-proof tact switch according to claim 1, characterized in that: apron (2) are equipped with annular (23), annular (23) just set up base (1), just annular (23) and the terminal surface phase-match of base (1), still be equipped with first sealing washer (24) between annular (23) and base (1).

3. The dust-proof tact switch according to claim 2, characterized in that: the cover plate (2) is abutted to the elastic sheet, and a third sealing ring (26) is further arranged between the annular groove (23) and the elastic sheet.

4. The dust-proof tact switch according to claim 1, characterized in that: contact site (31) are connected with cloth cover (4), cloth cover (4) are including rubber band (41) and dustproof cloth (42), the lateral wall counterbalance setting of rubber band (41) and contact site (31), the one end and the rubber band (41) fixed connection of dustproof cloth (42), its other end and apron (2) fixed connection.

5. The dust-proof tact switch according to claim 4, characterized in that: the contact part (31) is provided with a plurality of fastening grooves (311), the fastening grooves (311) are arranged on the side wall of the contact part (31) and distributed from bottom to top, and the fastening grooves (311) are matched with the rubber band (41).

6. The dust-proof tact switch according to claim 1, characterized in that: through-hole (21) and contact site (31) phase-match, through-hole (21) top still is equipped with arch (211), arch (211) are cyclic annular, just arch (211) and contact site (31) phase-match.

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