CN201075346Y

CN201075346Y - Push-key switch putting through at random position

Info

Publication number: CN201075346Y
Application number: CNU2006201557136U
Authority: CN
Inventors: 吴意诚; 花冈清二; 荒川公一
Original assignee: Associated Ocean Corp; DONGGUAN DAYANG SILICAGEL PRODUCTS Co Ltd; Seiko Epson Corp
Current assignee: Associated Ocean Corp; DONGGUAN DAYANG SILICAGEL PRODUCTS Co Ltd; Seiko Epson Corp
Priority date: 2006-12-31
Filing date: 2006-12-31
Publication date: 2008-06-18
Anticipated expiration: 2016-12-31

Abstract

The utility model relates to the technical field of electric appliance element, in particular to a keyswitch that can be switched through any position, which consists of a keycap, a middle body and a bottom plate. The keycap is a hollow cavity with a downward opening and a convex edge extends from the lower end of the hollow cavity to the outside. The lower end of the middle part extends outward with a baseplate which is provided with a convex platform with outer diameter equal to the convex edge and a cylinder which can be inserted into the hollow cavity of the keycap is arranged on the convex platform. The bottom plate is a flat plate, and the position where the center of the bottom plate is corresponding to the downward heave at the center of the cylinder bottom of the middle body is provided with a bowl elastic element with a downward opening, and the elastic element can turn over downward and connect circuit. The utility model has the advantages that the upwarp and inclination of the keycap can be controlled in an allowable range due to the convex edge of the keycap and the convex platform of the middle body, thus leading to a reliably connected circuit and the utility model has simple structure, flexible and convenient operation and strong practicability.

Description

But logical key switch is touched in the optional position

Technical field

The utility model relates to the electric elements technical field, refers to especially a kind ofly can and guarantee to touch logical key switch in the optional position of switch application of force pressing keys.

Background technology

Referring to Fig. 1: general key switch, be to be stacked to one with lower basal plate 12 and the bowl-shape elastomer 14 that touches that sheet component will be provided with fixed contact, intermediate 11 is set thereon, in the bottom surface of intermediate central authorities, with intermediate 11 one-body molded have to push touch the projection 13 that elastomer 14 tops are used, keycap 10 topmost is set, and be installed on the housing of electric equipment, constitute the switching device of electric equipment, the above-mentioned spring 14 of touching plays a role as travelling contact, touch the contact of elastomer 14 and fixed contact or separate by this, carry out the change action of the Push And Release of electric equipment function, on near the housing keycap 10 or the keycap 10, print the literal or the pattern of Presentation Function content, with the correct operation of prompting people.

In the key switch of above-mentioned structure, when the user presses the end face of keycap 10, this pressing force is delivered to the top of touching elastomer 14 by the projection 13 of intermediate bottom surface, so, this touches elastomer 14 counter-rotating that bends along with the distance of pressing, contact the state that switch becomes out with fixed contact.When the application of force of keycap 10 is disappeared, touch elastomer 14 and utilize the elasticity of himself and be recovered to bowl-shapely, simultaneously, keycap 10 is pushed gets back to initial position, and switch is in the state of pass.

For less key switch, this is enough, but, need the switch commonly used of repeatable operation for some, in order to touch the button of switch easily, it is bigger that people generally make switch, and that particularly keycap is done is bigger, referring to Fig. 2: for such switch, when people when the A of keycap 10 point is exerted pressure P, move under the side direction of P of exerting pressure, simultaneously, opposite side corresponding with it, then tractive and the bowl-shape supporting role of touching elastomer 14 owing to pressure P is upturned, what more convenient like this A was ordered moves down, until moving down into the end, like this, because the inclination of keycap 10, sometimes the projection 13 of intermediate 11 bottom surfaces can not make the bowl-shape elastomer 14 that touches reverse, and then causes circuit not connect, i.e. operation failure, because the defective of a key switch, it is not handy to be easy to make the user that equipment is produced, and operates inflexible impression, and this is the very awkward thing of part for manufacturer and distributors.

Summary of the invention

The purpose of this utility model provides a kind of on the optional position of button during to button application of force pressing keys, can effectively stop the opposing party to be upturned, and make the reliable key switch of connecting of circuit.

But the utility model is achieved in that the optional position and touches logical key switch, includes:

One keycap is the hollow cavity that Open Side Down, and the lower end of hollow cavity is extended with the convex edge laterally;

One intermediate has one with described convex edge the boss of same outer diameter as to be arranged for the lower end is extended with laterally on substrate, the substrate, a cylinder that can be nested in the hollow cavity of described keycap is arranged on boss;

One base plate, for plate shaped, the corresponding position of cylindrical bottom surface downward projection placed in the middle is provided with and can overturns downwards in order to touch the circuit passband bowl-shape flexible member that Open Side Down on the center of base and described intermediate.

The upper surface of above-mentioned keycap and one chamfering is arranged with outer surface that it intersects.

There is the cavity of an external diameter corresponding with boss that make progress greater than the boss external diameter the cylindrical bottom surface of above-mentioned intermediate, and cavity has a downward projection between two parties, and the cylindrical face of cylinder is provided with the inside groove of two above vertical direction.

Above-mentioned base plate is provided with steam vent.

After above-mentioned keycap and intermediate were bonded as one, certain clearance was left in the junction of the cylindrical face of cylinder of intermediate and the upper surface of boss and keycap inwall.

Above-mentioned keycap is made with plastic material, and intermediate is made with silica gel material, and base plate is made with the PET sheeting.

Above-mentioned keycap and intermediate can be one-body molded, and also available adhesive is bonded as one with above-mentioned keycap, intermediate and base plate.

On the upper edge of the convex edge of above-mentioned keycap and outside the outer, be provided with the convex edge that can stop keycap be upturned and move horizontally can be installed in keycap positioner on the equipment with base plate.

On the face of cylinder of above-mentioned keycap positioner and keycap, there is certain clearance the junction of the upper edge of convex edge.

The outstanding compared to existing technology advantage of the utility model is:

1, the utility model is because the boss design of the convex edge of keycap and intermediate, and utilize the keycap positioner, can effectively stop when only pushing keycap monolateral, the another side of keycap is upturned and the generation of the excessive tilt phenomenon of keycap, just can with keycap one side be upturned and the inclination of keycap is controlled within the scope of permission of the on that guarantees that switch can be brought into normal play.

2, the upper surface of the keycap of the utility model and with the chamfering of its outer surface that intersects and the gap of keycap and intermediate junction, can easily the pressure that puts on keycap be delivered on the bowl-shape flexible member, make circuit turn-on.

3, during the stressed inclination of the keycap of the utility model, intermediate is strain also, because the Compressed Gas that strain causes then can be discharged from the deep-slotted chip breaker of intermediate and the steam vent on fit-up gap and the base plate, helps the operation of key switch.

4, the utility model is simple in structure, and flexible and convenient operation is practical.

Description of drawings

Fig. 1 is the structure cutaway view of one of prior art of the present utility model.

Fig. 2 is the structure cutaway view of one of prior art of the present utility model user mode.

Fig. 3 is a structural perspective of the present utility model.

Fig. 4 is a structural upright exploded view of the present utility model.

Fig. 5 is an application state structure cutaway view of the present utility model.

Fig. 6 is the stressed theory structure cutaway view of application state of the present utility model.

Fig. 7 is the application state structural principle and the stressed principle cutaway view of keycap of the present utility model and the one-body molded body of intermediate.

Fig. 8 is the combining structure perspective exploded view of a plurality of switches of the utility model.

Fig. 9 is the perspective view that the utility model is applied to certain electric equipment.

Embodiment

With specific embodiment the utility model is further described below:

Embodiment 1: referring to Fig. 3-5: but logical key switch is touched in the optional position, includes:

One keycap 20 is the hollow cavity that Open Side Down, and the lower end of hollow cavity is extended with convex edge 22 laterally;

One intermediate 30 has one with described convex edge 22 boss 32 of same outer diameter as to be arranged for the lower end is extended with laterally on substrate 34, the substrate 34, a cylinder 31 that can be nested in the hollow cavity of described keycap 20 is arranged on boss 32;

One base plate 40, for plate shaped, the corresponding position of the bottom surface of cylinder 31 downward projection 35 placed in the middle is provided with and can overturns downwards in order to touch the circuit passband bowl-shape flexible member 41 that Open Side Down on the center of base plate 40 and described intermediate 30.

The upper surface of above-mentioned keycap 20 and one chamfering 21 is arranged with outer surface that it intersects.

There is the cavity of the corresponding external diameter of that make progress and a boss 32 greater than boss 32 external diameters the cylindrical bottom surface of above-mentioned intermediate 30, and cavity has a downward projection 35 between two parties, and the face of cylinder of cylinder 31 is provided with the inside groove 33 of two above vertical direction.

Above-mentioned base 40 is provided with steam vent 42.

After above-mentioned keycap 20, intermediate 30 and base plate 40 utilized adhesive to be bonded as one,

certain clearance

61,62 was left in the junction of the face of cylinder of the cylinder 31 of intermediate and the upper surface of boss 32 and keycap 20 inwalls.

Above-mentioned keycap 20 usefulness plastics or other material are made, and intermediate 30 usefulness silica gel or other have certain flexible material to be made, and base plate 40 usefulness PET thin slices or other material are made.

On the upper edge of the convex edge 22 of described keycap 20 and outside the outer, be provided with the convex edge 22 that can stop keycap 20 be upturned and move horizontally can be installed in keycap positioner 50 on the equipment with base plate 40.

On the face of cylinder of above-mentioned keycap positioner 50 and keycap 20, there is

certain clearance

63,64 junction of the upper edge of convex edge 22.

Force analysis: referring to Fig. 6: when people push keycap and are used for the operating state of change over switch, suppose that press points is (right side) outer of keycap 20, then because the gap factor of keycap 20 and keycap positioner 50, has only (right side) outer of power P1 being passed to intermediate 30, and resolve into P2, P3 is by the projection 35 of intermediate 30, substrate 34 acts on the bowl-shape flexible member 41 of base 40, simultaneously, the stressed decline in right side, the left side must be upturned, but because the restriction of 50 pairs of convex edges 22 of keycap positioner, can only make and upwarp distance limit within the gap length of C 1, and the left side is when upwarping C 1 displacement, because the existence of C2 and the downward traction action of mounting panel 34, the bottom surface, left side of intermediate 30 can not on move C 1 distance, move down and touch circuit passband, Φ R1 among the figure until the projection 35 of intermediate 30 is stressed, it is cylinder that Φ R2 indicates this structure.

Embodiment 2: referring to Fig. 7: principle and structure are the same, are that above-mentioned keycap 20 and intermediate 30 is formed in one.

Force analysis: referring to Fig. 7: when people push keycap 20 and are used for the operating state of change over switch, suppose that press points is (right side) outer of keycap 20, then because the gap factor of keycap 20 and keycap positioner 50, P4 resolves into P5 with power, P6 directly passes through the projection 35 of keycap 20, substrate 34 acts on the bowl-shape flexible member 41 of base plate 40, simultaneously, the stressed decline in right side, the left side must be upturned under the effect of bowl-shape flexible member 41, but because the restriction of 50 pairs of convex edges 22 of keycap positioner, can only make and upwarp distance limit within the gap length of C1, under the effect of active force P5, move down and touch circuit passband, Φ R3 among the figure until the projection 35 of keycap 20 is stressed, it is cylinder that Φ R4 indicates this structure.

Referring to Fig. 8: this is the construction of switch exploded view that a plurality of ordinary taps and the utility model are combined manufacturing, wherein: 201-keycap of the present utility model, the mounting panel of 301-the utility model and ordinary tap is the intermediate of one, 401-the utility model and ordinary tap integral type base plate.

Referring to Fig. 9: this is the perspective view that the utility model is applied to certain electric equipment, and number in the figure 100 refers to the utility model and is installed in outward appearance situation on the equipment.

Label 70 among Fig. 5-7 is the outer panels of equipment.

Claims

1. but logical key switch is touched in the optional position, it is characterized in that including:

One keycap (20) is the hollow cavity that Open Side Down, and the lower end of hollow cavity is extended with convex edge (22) laterally;

One intermediate (30), have one the boss (32) of same outer diameter as to be arranged on substrate (34), the substrate (34) for the lower end is extended with laterally, a cylinder (31) that can be nested in the hollow cavity of described keycap (20) is arranged on boss (32) with described convex edge (22);

One base plate (40), it is a flat board, corresponding position in that the center of base plate (40) and described intermediate (30) are gone up the bottom surface of cylinder (31) downward projection (35) placed in the middle is provided with and can overturns downwards in order to touch the circuit passband bowl-shape flexible member (41) that Open Side Down.

2. but logical key switch is touched in optional position according to claim 1, it is characterized in that the upper surface of described keycap (20) and with its outer surface that intersects one chamfering (21) is arranged.

3. but logical key switch is touched in optional position according to claim 1, there is the cavity of an external diameter corresponding with boss (32) that make progress greater than boss (32) external diameter the cylindrical bottom surface that it is characterized in that described intermediate (30), cavity has a downward projection (35) between two parties, and the face of cylinder of cylinder (31) is provided with the inside groove (33) of two above vertical direction.

4. but logical key switch is touched in optional position according to claim 1, it is characterized in that described base plate (40) is provided with steam vent (42).

5. but logical key switch is touched in optional position according to claim 1, it is characterized in that after described keycap (20) and intermediate (30) are bonded as one, certain clearance (61,62) is left in the junction of the upper surface of the face of cylinder of the cylinder of intermediate (31) and boss (32) and keycap (20) inwall.

6. but logical key switch is touched in optional position according to claim 1, it is characterized in that described keycap (20) makes with plastic material, and described intermediate (30) is made with silica gel material, and base plate (40) is made with the PET sheeting.

7. but logical key switch is touched in optional position according to claim 1, it is characterized in that on the upper edge of the convex edge (22) of described keycap (20) and outside the outer, be provided with the convex edge (22) that can stop keycap (20) be upturned and move horizontally can be installed in keycap positioner (50) on the equipment with base plate (40).

8. but logical key switch is touched in optional position according to claim 7, it is characterized in that there is certain clearance (63,64) junction of the upper edge of the face of cylinder, convex edge (22) at described keycap positioner (50) and keycap (20).