CN215118712U - Ultra-thin type light touch switch - Google Patents

Abstract

The utility model discloses an ultra-thin type light touch switch, which comprises a base, wherein the top of the base is bonded with a dustproof film, the center of the base is provided with an accommodating cavity, and the dustproof film and the accommodating cavity form a sealed space together; a reed is arranged in the accommodating cavity, a central contact and an outer ring contact are arranged on the accommodating cavity, the edge of the reed is in contact with the outer ring contact in the accommodating cavity in an attaching manner, and a key point is arranged on the surface of the dustproof film; the reed can be bent and elastically deformed by pressing the key point, and the reed is contacted with the central contact in the accommodating cavity, so that the circuit is conducted. The utility model has the advantages of simple structure, reasonable in design, contact are stable, the leakproofness is strong, long service life, whole small. The product is thinner, can release great spatial position on the PCB board, and this dabs the switch and has good leakproofness, can prevent in moisture, dust or the powder in the air gets into dabs the switch, long service life.

Description

Ultra-thin type light touch switch

Technical Field

The utility model relates to a touch the switch, especially relate to an ultra-thin type touches switch.

Background

The tact switch has advantages of small contact resistance load, accurate operation force error, diversified specifications, and the like, and is widely applied to electronic equipment, white appliances, and the like. The touch switch with the traditional structure mainly comprises a base, a button and a cover plate, wherein the cover plate is provided with a through hole, the button is matched with the through hole, and the internal structure of the touch switch is opened and closed by the elastic sheet which is elastically moved by the stress of the elastic sheet. General dabs switch belongs to assembled structure, and the apron is fixed on the base with the mode of pegging graft, and button and apron adopt the mode of joint to be connected, consequently, has the clearance between button and the through-hole to and assembled dabs the switch and also has certain gap, makes moisture, dust or powder in the air enter into the switch inside from above-mentioned clearance or gap like this, arouses the circuit short circuit, leads to dabbing the switch failure, influences its normal use. Therefore, the touch switch with the traditional structure has poor sealing performance and has some potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model discloses solve the problem that above-mentioned prior art exists, provide an ultra-thin type and dabble switch, it is simple structure compact not only, adopts integral type seal structure moreover for should dabbing the switch and having good leakproofness, can prevent that moisture, dust or powder in the air from getting into dabbing in the switch.

The utility model provides a technical scheme that its technical problem adopted: the ultrathin tact switch comprises a base, wherein a dustproof film is bonded on the top of the base, a containing cavity is formed in the center of the base, and the dustproof film and the containing cavity form a sealed space together; a reed is arranged in the accommodating cavity, a central contact and an outer ring contact are arranged on the accommodating cavity, the edge of the reed is in contact with the outer ring contact in the accommodating cavity in an attaching manner, and a key point is arranged on the surface of the dustproof film; can make the reed crooked elastic deformation through pressing the button point to make the reed and hold the interior central contact of chamber, thereby switch on the circuit, through above-mentioned technical scheme, the product is thinner, can release great spatial position on the PCB board, should dabble the switch and have good leakproofness, can prevent in moisture, dust or the powder entering in the air dabs the switch, long service life.

For further improvement, a pair of first wiring clamping pins and a pair of second wiring clamping pins are respectively arranged on two sides of the base, the inner ends of the pair of first wiring clamping pins are connected with the outer ring contact, and the inner ends of the pair of second wiring clamping pins are connected with the central contact.

Further perfecting, the button point is made by polyzincine plastics, the base is made by LCP plastics, the dust-proof membrane is the PI membrane, first wiring card foot and second wiring card foot are made by the phosphorus copper that thickness is 0.08mm, the reed is the dome structure, and the reed is formed by two stainless steel disk complex that cover silver.

Further perfection, a layer of protective film covers the key points, and the edge of the protective film is in hot-melt adhesion with the surface of the dustproof film. Through adopting above-mentioned technical scheme, set up the button point in the protective film to the button point drops and leads to dabbing the condition emergence that the switch can't be used after having avoided the long-time use of button point of traditional structure, has improved the life who dabs the switch, and simple structure, reasonable in design, contact stability, the leakproofness is strong, whole small.

Further perfect, the outer loop contact has two, and bilateral symmetry sets up, the outer loop contact upwards extends the trip that forms can the fixed reed, can avoid rocking of reed, has improved the reed and has contacted well with the outer loop contact, and the reed is difficult to damage the dust-proof membrane because of the collision and breaks away from the appearance chamber of base.

And a contact gasket is arranged between the two outer ring contacts, and the upper surface of the contact gasket is in contact with the edge of the lower surface of the reed in a fitting manner. By adopting the technical scheme, the contact area of the outer ring contact and the reed can be increased by the contact gasket, so that the contact performance between the reed and the outer ring contact is improved, and the phenomenon of poor contact is avoided.

Further perfection, the upper surface of the central contact is provided with a plurality of frustum-shaped contacts which are distributed circumferentially, so that the central contact can be in multi-point contact with the center of the reed, the phenomenon of poor contact is reduced, and the service life of the switch is effectively prolonged.

Further perfection, be equipped with a layer of elastic insulation film between central contact and the reed, be equipped with the toper through-hole of a plurality of shape and frustum shape contact complex on the elastic insulation film, the thickness of elastic insulation film is greater than the height of frustum shape contact, can make elastic insulation film elastic deformation through pressing the reed to make reed and frustum shape contact, thereby switch on the circuit. By adopting the technical scheme, the elastic insulating film can enhance the reset performance of the reed, the service life of the reed is prolonged, the reed is prevented from deforming and losing efficacy after being pressed for many times and being attached to the central contact to cause switch damage, and the service life of the tact switch is effectively prolonged.

The utility model discloses profitable effect is: the utility model has the advantages of simple structure, reasonable in design, contact are stable, the leakproofness is strong, long service life, whole small. The product is thinner, can release great spatial position on the PCB board, and this dabs the switch and has good leakproofness, can prevent in moisture, dust or the powder in the air gets into dabs the switch, long service life. The key points are covered with a layer of protective film, and the edge of the protective film is in hot-melt adhesion with the surface of the dustproof film. The key point is arranged in the protective film, so that the condition that the light touch switch cannot be used due to the fact that the key point falls off after the key point of the traditional structure is used for a long time is avoided, and the service life of the light touch switch is prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is a schematic sectional view of the present invention;

description of reference numerals: 1. the contact structure comprises a base, 11, a cavity, 12, a central contact, 121, a frustum-shaped contact, 13, an outer ring contact, 131, a clamping hook, 132, a contact gasket, 14, a first wiring clamping pin, 15, a second wiring clamping pin, 2, a dustproof film, 3, a reed, 4, a key point, 5, an elastic insulating film, 51, a conical through hole, 6 and a protective film.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

referring to figures 1-3: the ultra-thin type tact switch in embodiment 1 includes a base 1, wherein a dustproof film 2 is bonded to the top of the base 1, a cavity 11 is formed in the center of the base 1, and the dustproof film 2 and the cavity 11 form a sealed space together; a reed 3 is arranged in the cavity 11, a central contact 12 and an outer ring contact 13 are arranged on the cavity 11, the edge of the reed 3 is in contact with the outer ring contact 13 in the cavity 11, and a key point 4 is arranged on the surface of the dustproof film 2; can make reed 3 bending elastic deformation through pressing button point 4 to make reed 3 and the contact of central contact 12 that holds in the chamber 11, thereby switch on the circuit, through above-mentioned technical scheme, the product is thinner, can release great spatial position on the PCB board, should dabber switch has good leakproofness, can prevent moisture, dust or the powder entering in the air dabber switch, long service life. A pair of first wiring clamping pins 14 and a pair of second wiring clamping pins 15 are respectively arranged on two sides of the base 1, the inner ends of the first wiring clamping pins 14 are connected with the outer ring contact 13, and the inner ends of the second wiring clamping pins 15 are connected with the central contact 12. The button point 4 is made by polyzincine plastics, base 1 is made by LCP plastics, dust-proof membrane 2 is the PI membrane, first wiring card foot 14 and second wiring card foot 15 are made by the phosphorus copper that thickness is 0.08mm, reed 3 is the dome structure, and reed 3 is formed by two stainless steel disk complex that cover silver-colored, and electric conductivity is strong, and life exceedes 8 ten thousand times.

As shown in fig. 4, example 2: on embodiment 1's basis, button point 4 coats and is stamped one deck protecting film 6, and the edge of protecting film 6 and the surperficial hot melt bonding of dust-proof membrane 2 through setting up button point 4 in protecting film 6 to the condition that the button drops and leads to dabbing the unable use of switch and take place after having avoided the long-time use of button of traditional structure, improved the life who dabs the switch, and simple structure, reasonable in design, contact stability, the leakproofness is strong, whole small. The number of the outer ring contacts 13 is two, the outer ring contacts are arranged symmetrically left and right, and the outer ring contacts 13 extend upwards to form clamping hooks 131 capable of fixing the reeds 3; can avoid rocking of reed 3, it is good to have improved reed 3 and outer loop contact 13 contact, and reed 3 is difficult to damage dust-proof membrane 2 and break away from the appearance chamber 11 of base 1 because of the collision. A contact gasket 132 is arranged between the two outer ring contacts 13, and the upper surface of the contact gasket 132 is in contact with the edge of the lower surface of the reed 3. The upper surface of the central contact 12 is provided with a plurality of frustum-shaped contacts 121 which are circumferentially distributed, so that the central contact 12 can be in multi-point contact with the center of the reed 3, the occurrence of poor contact is reduced, and the service life of the switch is effectively prolonged. The soft touch switch is characterized in that a layer of elastic insulating film 5 is arranged between the central contact 12 and the reed 3, a plurality of conical through holes 51 matched with the frustum-shaped contacts 121 in shape are formed in the elastic insulating film 5, the thickness of the elastic insulating film 5 is larger than the height of the frustum-shaped contacts 121, the elastic insulating film 5 can be elastically deformed by pressing the reed 3, the reed 3 is in contact with the frustum-shaped contacts 121, a circuit is conducted, the elastic insulating film 5 can enhance the reset performance of the reed 3, the service life of the reed 3 is prolonged, the reed 3 is prevented from deforming and losing efficacy after being pressed for many times and being attached to the central contact 12 to cause short circuit damage of the switch, the service life of the soft touch switch is effectively prolonged, the pressing force born by the soft touch switch is remarkably improved, and the switch is not easy to damage due to overlarge pressing force.

While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.

Claims (8)

1. An ultra-thin type tact switch comprises a base (1), and is characterized in that: the dustproof film (2) is bonded to the top of the base (1), the center of the base (1) is provided with a containing cavity (11), and the dustproof film (2) and the containing cavity (11) form a sealed space together; a reed (3) is arranged in the cavity (11), a central contact (12) and an outer ring contact (13) are arranged on the cavity (11), the edge of the reed (3) is in contact with the outer ring contact (13) in the cavity (11), and a key point (4) is arranged on the surface of the dustproof film (2); the reed (3) can be bent and elastically deformed by pressing the key point (4), and the reed (3) is contacted with the central contact (12) in the cavity (11), so that the circuit is conducted.

2. The ultra-thin type tact switch according to claim 1, wherein: the two sides of the base (1) are respectively provided with a pair of first wiring clamping pins (14) and a pair of second wiring clamping pins (15), the inner ends of the first wiring clamping pins (14) are connected with the outer ring contact (13), and the inner ends of the second wiring clamping pins (15) are connected with the central contact (12).

3. The ultra-thin type tact switch according to claim 2, wherein: the button point (4) is made by polyzincine plastics, base (1) is made by LCP plastics, dust-proof membrane (2) are the PI membrane, first wiring card foot (14) and second wiring card foot (15) are made by the phosphorus copper that thickness is 0.08mm, reed (3) are the dome structure, and reed (3) are formed by two stainless steel disk complex that cover silver.

4. The ultra-thin type tact switch according to claim 3, wherein: the key points (4) are covered with a layer of protective film (6), and the edge of the protective film (6) is in hot-melt adhesion with the surface of the dustproof film (2).

5. The ultra-thin type tact switch according to claim 4, wherein: the number of the outer ring contacts (13) is two, the outer ring contacts are arranged in a bilateral symmetry mode, and the outer ring contacts (13) extend upwards to form clamping hooks (131) capable of fixing the spring pieces (3).

6. The ultra-thin type tact switch according to claim 5, wherein: and a contact gasket (132) is arranged between the two outer ring contacts (13), and the upper surface of the contact gasket (132) is in contact with the edge of the lower surface of the reed (3).

7. The ultra-thin type tact switch according to claim 5 or 6, wherein: the upper surface of the central contact (12) is provided with a plurality of frustum-shaped contacts (121) which are distributed circumferentially.

8. The ultra-thin type tact switch according to claim 7, wherein: a layer of elastic insulating film (5) is arranged between the central contact (12) and the reed (3), a plurality of conical through holes (51) matched with the frustum-shaped contact (121) in shape are formed in the elastic insulating film (5), the thickness of the elastic insulating film (5) is larger than the height of the frustum-shaped contact (121), the elastic insulating film (5) can be elastically deformed by pressing the reed (3), and the reed (3) is in contact with the frustum-shaped contact (121), so that a circuit is conducted.

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