CN201421791Y

CN201421791Y - Light-touch switch

Info

Publication number: CN201421791Y
Application number: CN2009200530360U
Authority: CN
Inventors: 周法勇
Original assignee: DONGGUAN CITY ZHONG ZHOU ELECTRONIC Ltd
Current assignee: DONGGUAN CITY ZHONG ZHOU ELECTRONIC Ltd
Priority date: 2009-03-20
Filing date: 2009-03-20
Publication date: 2010-03-10
Anticipated expiration: 2019-03-20

Abstract

The utility model relates to technology field of the control switch of the electronic product, in particular to a light-touch switch; the light-touch switch comprises a shell body which is mounted with an opening hollow-cavity, the inside of the hollow-cavity is movably riveted with a press-button; the inside of the shell body is provided with a dynamic touch-chip and a static touch-chip, the lower part of the press-button presses the dynamic touch-chip; the lower ends of the dynamic touch-chip and the static touch-chip are respectively extended out of the shell body and form inserting pins, the inserting pins are respectively connected with the external circuit; the inside of the shell body is also fixedly mounted with a fixed terminal, the lower end of the fixed terminal is also extendedout of a base and forms another inserting pin; the three inserting pins are arranged as a triangle; the three inserting pins are inserted into the circuit board as a triangle during mounting, therebyforming a solid three-point connection, and the light-touch switch can be solidly and accurately fixed at the circuit board without needing the base; therefore, the material is saved, and the volumeis reduced.

Description

A kind of touch-switch

Technical field:

The utility model relates to the control switch technical field of electronic product, particularly a kind of touch-switch.

Background technology:

In the prior art, the control switch on communication apparatus, household electrical appliance or the electronic instrument mostly is some contacts, is referred to as touch-switch.It is mainly by pedestal, cover plate and be installed in the cover plate and button that an end passes the through hole on the cover plate is formed, the inside of pedestal forms cavity, be provided with movable contact reed and contact in the cavity, movable contact reed and contact all extend the pin that stretches out pedestal, in the described pin place in circuit plate, keep normally open between movable contact reed and contact; When pressing the button, button compresses the movable contact reed, and the movable contact reed is contacted with the contact, thereby with the interlock circuit conducting; Release button, button are then upspring under an elasticity reset device effect that is arranged in the pedestal, and movable contact reed and contact disengage and interlock circuit is disconnected.

Above-mentioned touch-switch mainly relies on described pin to insert in the external circuit and is fixed on the circuit board, because the quantity of pin is generally two, so touch-switch is difficult to firm the connection and accurate location on circuit board; So for firm touch-switch with make it accurate location, the general position that touch-switch is installed on circuit board sets firmly a base, touch-switch is inserted in this base, causes defectives such as manufacturing cost height, small product size be big like this, is unfavorable for the miniaturization of electronic product.

The utility model content:

The purpose of this utility model is to provide at the deficiencies in the prior art that a kind of material usage is few, low cost of manufacture, the firm touch-switch of connection.

For achieving the above object, the utility model adopts following technical scheme:

A kind of touch-switch, it comprises that one is provided with the housing of open cavity, and described cavity top is provided with opening, in the cavity movably riveted one button is arranged, the housing end face is stretched out from described opening part in the upper end of button, and the button bottom is connected with housing by an elasticity reset device; Be provided with an elasticity movable contact spring and a static contact corresponding with described movable contact spring in the housing, described button bottom compresses described movable contact spring; Described movable contact spring and described static contact lower end are extended housing respectively and are formed pin, and described pin inserts external circuit respectively; Also be installed with a fixed terminal in the described housing, described fixed terminal lower end is also extended housing and is formed a pin; Described three pin distributions triangular in shape.

Described housing bottom is provided with reference column.

Described movable contact spring and static contact are arranged on housing one side in parallel to each other; Movable contact spring and static contact all vertically are provided with.

Described movable contact spring upper end extends an elasticity contact arm that bends downwards, and described contact arm middle part convexes with drift angle, and the contact arm lower end convexes with a public contact; The position male of the corresponding described public contact of described static contact is provided with a female contact.

Elasticity reset device comprises a stage clip and a reed; Described stage clip vertically is arranged in the described cavity, and its lower end compresses the housing bottom inwall, upper end contact button; Described reed is installed in the interior side away from movable contact spring of housing, and this reed upper end extends an elastic arm that bends under side, and described elastic arm lower end compresses a sidewall of button.

Described elastic arm lower end extends crooked curved pawl, the described sidewall that touches the described button of arc top contact of pawl of touching.

Described housing comprises the pedestal and the loam cake of mutual fastening, and pedestal and loam cake surround described cavity; Described movable contact spring, static contact, fixed terminal and reed all are embedded in described loam cake.

The opening part of described loam cake is provided with gathering sill, and the position male of the corresponding gathering sill in described button side is provided with lead.

The utility model beneficial effect is: adopt the utility model, during installation, three pins of housing bottom are plugged on the circuit board triangular in shapely, thereby form 3 firm connections, make this touch-switch not need base, can firmly and exactly be fixed on the circuit board; During use, push described button downwards, button compresses and promotes movable contact spring to the static contact bending, and movable contact spring is contacted with static contact, thereby makes the external circuit conducting; Simultaneously, flexible movable contact spring produces the elastic force that resets when compressed by button, and described elasticity reset device also produces the resilience force that makes push-button reset; Behind the release button, button is upspring under the resilience force effect of elasticity reset device, and button disappears to the pressure that compresses of movable contact spring, and movable contact spring resets under himself elastic force effect, and movable contact spring and static contact disengage, thereby make the external circuit disconnection; Compared with prior art, save base during installing and locating, thereby saved material, and reduced volume; Dependable performance during use.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is polycrystalline substance schematic diagrames of the present utility model;

Accompanying drawing 3 is decomposing schematic representations of the present utility model;

Accompanying drawing 4 is cooperation schematic diagrames of the utility model movable contact spring and static contact.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described, sees that shown in the accompanying

drawing

1,2,3,4, this is a better embodiment of the present utility model; A kind of touch-switch, it comprises that one is provided with the housing 1 of open cavity, and described cavity top is provided with opening, in the cavity movably riveted one button 2 is arranged, housing 1 end face is stretched out from described opening part in the upper end of button 2, and button 2 bottoms are connected with housing 1 by an elasticity reset device; Be provided with an elasticity movable contact spring 31 and a static contact 32 corresponding with described movable contact spring 31 in the housing 1, described button 2 bottoms compress described movable contact spring 31; Described movable contact spring 31 and described static contact 32 lower ends are extended housing 1 respectively and are formed pin 5, and described pin 5 inserts external circuit respectively; Also be installed with a fixed terminal 33 in the described housing 1, described fixed terminal 33 lower ends are also extended housing 1 and are formed a pin 5; Described three pins, 5 distributions triangular in shape.

See shown in the accompanying drawing 2, the utility model when mounted, three pins 5 of housing 1 bottom are plugged on the circuit board triangular in shapely, and adopt welding or other connected mode that described pin 5 is fixed on the circuit board, thereby form 3 firm connections, make this touch-switch not need base, can firmly and exactly be fixed on the circuit board.Wherein, fixed terminal 33 only plays location and fixation, and does not play electric interconnect function; The pin 5 of described movable contact spring 31 is connected with external circuit respectively with 5 of the pins of static contact 32; Housing 1 by insulation between movable contact spring 31 and the static contact 32 separates, thereby keeps normally open.

See shown in accompanying drawing 1 and the accompanying drawing 3 that the utility model is pushed described button 2 downwards in use, button 2 compresses and promotes movable contact spring 31 to static contact 32 bendings, and movable contact spring 31 is contacted with static contact 32, thereby makes the external circuit conducting; Simultaneously, flexible movable contact spring 31 produces the elastic force that resets when compressed by button 2, and described elasticity reset device also produces the resilience force that button 2 is resetted; Behind the release button 2, button 2 is upspring under the resilience force effect of elasticity reset device, and the pressure that compresses of 2 pairs of movable contact springs 31 of button disappears, and movable contact spring 31 resets under himself elastic force effect, and movable contact spring 31 disengages with static contact 32, thereby external circuit is disconnected.

See shown in accompanying drawing 1 and the accompanying drawing 2 that the described housing of present embodiment 1 bottom is provided with reference column 13, specifically, the described housing of present embodiment 1 bottom is provided with at least two reference column 13, and described reference column 13 is arranged on housing 1 center bottom; Location hole on described reference column 13 and the circuit board is complementary, and has strengthened accuracy and stability that the utility model is installed, to the impact of touch-switch and circuit board, has prolonged useful life of the present utility model when also having cushioned pressing button 2 simultaneously.

See that shown in accompanying drawing 3 and the accompanying drawing 4, described movable contact spring 31 and static contact 32 are arranged on housing 1 one sides in parallel to each other; Movable contact spring 31 all vertically is provided with static contact 32.Specifically, described movable contact spring 31 upper ends extend an elasticity contact arm 311 that bends downwards, and described contact arm 311 middle parts convex with drift angle 312, and contact arm 311 lower ends convex with a public contact 313; The position male of described static contact 32 corresponding described public contacts 313 is provided with a female contact 322.Like this, when button 2 pressed down, button 2 one bottoms compressed the drift angle 312 of described contact arm 311, and made contact arm 311 to static contact 32 bendings; Button 2 continues to press down, and button 2 sidewalls compress the drift angle 312 of contact arm 311, and described public contact 313 is contacted with female contact 322 of static contact 32, thus the conducting external circuit.Compare with horizontally disposed mode, movable contact spring 31 and the static contact 32 vertical modes that are provided with, its movable contact spring 31 contacts by described flexible contact arm 311 with static contact 32, described contact arm 311 length are longer, and fatigue strength also strengthens, and are difficult for taking place plastic deformation, longer service life, job stability is better

See shown in the accompanying drawing 3 that the described elasticity reset device of present embodiment comprises a stage clip 41 and a reed 42; Described stage clip 41 vertically is arranged in the described cavity, and its lower end compresses housing 1 bottom interior wall, upper end contact button 2; Described reed 42 is installed in housing 1 an interior side away from movable contact spring 31, and these reed 42 upper ends extend an elastic arm that bends 421 under side, and described elastic arm 421 lower ends compress a sidewall of button 2.

The reseting elasticity that above-mentioned stage clip 41 provides button 2 vertically to upspring; Described reed 42 then 2 pairs of movable contact springs of enhancing button, 31 contact arms 311 compress pressure.Pressed the button 2 o'clock, stage clip 41 is compressed and produces vertical elastic force, and the elastic arm 421 of described reed 42 is subjected to the extruding generation elastic deformation of button 2 sidewalls, thereby produce the pressure of horizontal direction, the direction of this pressure is pointed to public contact 313 moving directions of movable contact spring 31, thereby make the extruding of 2 pairs of contact arms 311 of button stronger, guaranteed that public contact 313 contacts with fitting tightly of female contact 322.Behind the release button 2, button 2 is upspring under stage clip 41 reseting elasticity effects, and the elastic arm 421 of reed 42 also resets under self reseting elasticity, lifting button 2 lower ends upwards in its reseting procedure, and this has strengthened the sense of touch of button 2.

Wherein, described elastic arm 421 lower ends extend the crooked curved pawl 422 that touches, the described sidewall that touches the described button 2 of arc top contact of pawl 422, this is in order to make elastic arm 421 lower ends directly not compress button 2 sidewalls, prevent elastic arm 421 lower end scratch buttons 2 sidewalls, prolonged the useful life of this touch-switch like this.

See shown in accompanying drawing 1 and the accompanying drawing 2 that the described housing 1 of present embodiment comprises the pedestal 12 and the loam cake 11 of mutual fastening, pedestal 12 and loam cake 11 surround described cavity; Described movable contact spring 31, static contact 32, fixed terminal 33 and reed 42 all are embedded in described loam cake 11.When this touch-switch of assembling, earlier described movable contact spring 31, static contact 32, fixed terminal 33 and reed 42 are embedded respectively in loam cake 11, fastening loam cake 11 and pedestal 12, made things convenient for the assembling of this touch-switch like this, improved production efficiency.

See shown in the accompanying drawing 1 that the opening part of the described loam cake 11 of present embodiment is provided with gathering sill, the position male of the corresponding gathering sill in described button 2 sides is provided with lead 21; Gathering sill and lead 21 have retrained sliding up and down of button 2 jointly, have avoided button 2 sidesways, have strengthened functional reliability of the present utility model.

The above only is a better embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1, a kind of touch-switch, it comprises that one is provided with the housing (1) of open cavity, described cavity top is provided with opening, in the cavity movably riveted one button (2) is arranged, housing (1) end face is stretched out from described opening part in the upper end of button (2), and button (2) bottom is connected with housing (1) by an elasticity reset device; Be provided with an elasticity movable contact spring (31) and a static contact (32) corresponding with described movable contact spring (31) in the housing (1), described button (2) bottom compresses described movable contact spring (31); Described movable contact spring (31) and described static contact (32) lower end are extended housing (1) respectively and are formed pin (5), and described pin (5) inserts external circuit respectively; It is characterized in that: also be installed with a fixed terminal (33) in the described housing (1), described fixed terminal (33) lower end is also extended housing (1) and is formed a pin (5); Described three pins (5) distribution triangular in shape.

2, a kind of touch-switch according to claim 1 is characterized in that: described housing (1) bottom is provided with reference column (13).

3, a kind of touch-switch according to claim 2 is characterized in that: described movable contact spring (31) and static contact (32) are arranged on housing (1) one side in parallel to each other; Movable contact spring (31) all vertically is provided with static contact (32).

4, a kind of touch-switch according to claim 3, it is characterized in that: described movable contact spring (31) upper end extends an elasticity contact arm (311) that bends downwards, described contact arm (311) middle part convexes with drift angle (312), and contact arm (311) lower end convexes with a public contact (313); The position male of the corresponding described public contact of described static contact (32) (313) is provided with a female contact (322).

5, a kind of touch-switch according to claim 4 is characterized in that: elasticity reset device comprises a stage clip (41) and a reed (42); Described stage clip (41) vertically is arranged in the described cavity, and its lower end compresses housing (1) bottom interior wall, upper end contact button (2); Described reed (42) is installed in the interior side away from movable contact spring (31) of housing (1), and this reed (42) upper end extends an elastic arm that bends (421) under side, and described elastic arm (421) lower end compresses a sidewall of button (2).

6, a kind of touch-switch according to claim 5 is characterized in that: described elastic arm (421) lower end extends crooked curved pawl (422), the described sidewall that touches the described button of arc top contact (2) of pawl (422) of touching.

7, a kind of touch-switch according to claim 6 is characterized in that: described housing (1) comprises the pedestal (12) and the loam cake (11) of mutual fastening, and pedestal (12) and loam cake (11) surround described cavity; Described movable contact spring (31), static contact (32), fixed terminal (33) and reed (42) all are embedded in described loam cake (11).

8, according to any described a kind of touch-switch of claim 1～7, it is characterized in that: the opening part of described loam cake (11) is provided with gathering sill, and the position male of the corresponding gathering sill in described button (2) side is provided with lead (21).