CN212659460U - Key structure of integrated double-color dead head annunciator - Google Patents

Abstract

The utility model discloses a button structure of integrated double-colored dead head annunciator, including transparent inserts, the silica gel packing ring presses the button head, the astigmatism piece, the light polarization piece, LED lamp one, LED lamp two, flexible PCB, button base and silica gel pad cap, characterized by: transparent inserts pass through trapezoidal groove card in the button head upper surface to flush with trapezoidal groove card surface, the silica gel packing ring is installed on the flange face of button head, the astigmatism piece is followed with the light polarization piece from top to bottom paste in proper order in the button head transparent inserts below, LED lamp one with the welding of lamp two is in flexible PCB upper surface. The key function state is directly reflected by the luminous mark on the upper surface, the two luminous colors can represent more complex key logic, the key can be clearly read under strong light irradiation, the pressing stroke is adjustable, the reliability is high, the service life is long, the key is easy to manufacture and replace, and white light, blue-white light or various kinds of light compatible with night vision can be selected according to actual needs.

Description

Key structure of integrated double-color dead head annunciator

Technical Field

The utility model relates to a button structure field of integrated double-colored dead head annunciator, concretely relates to button structure of integrated double-colored dead head annunciator.

Background

In recent years, with the trend of designing and manufacturing integrated modules of onboard equipment and components of an airplane, the application of a cockpit light guide panel is gradually developed from a separated structure of a light guide panel, a annunciator and a switch key to a light guide control panel integrating the switch key and the annunciator.

Currently, most of the common light-guiding control panels integrate the annunciators on the panel, rather than on the keys, and the annunciators are monochrome-illuminated. The structure has simple manufacture and high reliability, and has the following defects: 1. the annunciators occupy panel space, and are unfavorable for the panel layout in limited space; 2. the key does not have an integrated illumination function, and the mark on the surface of the key can be illuminated only by means of the backlight of the light guide panel; 3. although the position of the annunciator on the panel is close to the keys, the corresponding relation between the light emission of the annunciator and the functions of the keys is not favorably and visually expressed; 4. the monochrome annunciator has a weak expression capability on the key logic and cannot meet the expression requirement of more complex key logic.

Moreover, the contrast requirement of the annunciator of the light guide control panel under the external strong light irradiation is often that when the annunciator is not lightened, the mark is unreadable, namely, the effect of 'dead head'; when the lamp is lightened, the mark is clear and readable. At present, a common method for realizing a 'dead head' annunciator is to cover a film with a 'dead head' effect on an annunciator identifier. The method has simple manufacturing process, but the result is uncontrollable, which is not beneficial to mass production. When the factory luminous intensity of the luminous element of the annunciator randomly fluctuates within a large range, the brightness value and the contrast value of the annunciator at the time of lighting may be caused to exceed the required range. This condition is not easy to repair, and the light guide control panel is scrapped.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies or inadequacies in the prior art, it would be desirable to provide a key structure that integrates a two-color dead-head annunciator.

According to the technical scheme that this application embodiment provided, a button structure of integrated double-colored dead head annunciator, including transparent inserts, silica gel packing ring, press the key head, the light diffusion piece, the light polarization piece, LED lamp one, LED lamp two, flexible PCB, key base and silica gel pad cap, transparent inserts passes through the step groove card and is in the key head upper surface to flush with step groove surface, the silica gel packing ring is installed on the flange face of key head, light diffusion piece and light polarization piece follow paste in proper order inside the key head transparent inserts below, LED lamp one with LED lamp two welds flexible PCB upper surface, wherein LED lamp one with LED lamp two is two kinds of different colours, and quantity is respectively a plurality of to according to the even overall arrangement in position of annunciator sign, be located the sign under. The light scattering sheet is positioned above the light-emitting element and diffuses the light spot into a uniform area light source, and the light polarizing sheet is positioned above the light-emitting element and modifies the point light source into a specified linear polarization direction. The flexible PCB with the button base passes through the step groove card and is in below the button head, form the button assembly body, wherein the button head is sealed to be pasted on the button base, the button base upper surface pass through the draw-in groove with flexible PCB connects, lower surface draw-in groove internal connection the silica gel pad cap.

The utility model discloses in, transparent inserts is transparent organic glass.

The utility model discloses in, the silica gel packing ring is the elastomer packing ring that a weatherability is good for the assembly gap's of annunciator button and light guide control panel is sealed.

The utility model discloses in, constitute button major structure jointly according to button head and button base to form inside cavity. The material is black opaque plastic.

The utility model discloses in, LED lamp one with LED lamp two provides two kinds of luminous colours for the annunciator.

The utility model discloses in, use flexible PCB realizes the electric overlap joint of annunciator button and leaded light control panel. When the key is pressed, the flexible PCB acts together with the annunciator key.

The utility model discloses in, the silica gel pad cap is the elastomer gasket that a weatherability is good for the assembly deviation is eliminated in the adjustment, adjustment button stroke.

The flexible PCBA of the annunciator comprises a voltage input end, a first loop, a second loop and an LED lamp. Wherein, the voltage input end is connected with the anodes of all the LEDs. The first loop is connected with the LED cathode of the first light-emitting circuit, and the second loop is connected with the LED cathode of the second light-emitting circuit. The flexible PCB is lapped with the main PCBA of the light guide control panel through the single PIN connector. The LED current-limiting resistor of the annunciator light-emitting circuit is not welded on the flexible PCB, but is welded on the main PCBA of the light-guiding control panel.

The light guide control panel drives the annunciator light-emitting circuit after being electrified, and the annunciator can mark two different colors. Paint is sprayed on the appearance surface of the annunciator key, the annunciator mark is etched by using a laser engraving process and then atomized into a semi-transparent mark, and the annunciator meets the contrast requirement under the conditions of brightness and external strong light irradiation, so that the effect of 'dead head' is realized.

To sum up, the utility model has the advantages that: the annunciator has small key size, high integration level, independent illumination and modularization, the functional state of the key is directly reflected by the luminous mark on the upper surface of the annunciator, two luminous colors can represent more complex key logic, the annunciator can be clearly and readable under the irradiation of strong light, the pressing stroke is adjustable, the annunciator has high reliability, long service life, easy manufacture and easy replacement, and can select white light, blue-white light or various illuminations compatible with night vision according to actual needs.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a view showing the expanded structure of the present invention;

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

fig. 4 is a schematic sectional structure of the present invention;

fig. 5 is a circuit diagram of the present invention.

Reference numbers in the figures: the LED light guide control panel comprises a transparent insert-1, a silica gel gasket-2, a key head-3, a light diffuser-4, a light polarizer-5, an LED lamp I-6, an LED lamp II-7, a flexible PCB-8, a key base-9, a silica gel pad cap-10, a annunciator mark-11, a spray paint-12, a paint atomization layer-13, a panel-14, a light guide control panel main PCB-15, a single PIN connector-16 and a touch switch-17.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-3, a key structure of an integrated two-color dead head annunciator comprises a transparent insert 1, a silicone gasket 2, a key head 3, a light diffuser 4, a light polarizer 5, a first LED lamp 6, a second LED lamp 7, a flexible PCB8, a key base 9 and a silicone pad cap 10, wherein the transparent insert 1 is clamped on the upper surface of the key head 3 through a step groove and is flush with the surface of the step groove, the silicone gasket 2 is mounted on a flange surface of the key head 3, the light diffuser 4 and the light polarizer 5 are sequentially adhered below the transparent insert 1 from top to bottom inside the key head 3, the first LED lamp 6 and the second LED lamp 7 are welded on the upper surface of the flexible PCB8, the flexible PCB8 and the key base 9 are clamped below the key head 3 through the step groove to form a key assembly, wherein the key head 3 is hermetically adhered on the key base 9, the upper surface of the key base 9 is connected with the flexible PCB8 through a clamping groove, and the lower surface clamping groove is internally connected with the silica gel pad cap 10. The transparent insert 1 is rectangular transparent organic glass. The silica gel gasket 2 is a rectangular patch, and the middle part of the silica gel gasket is rectangular and hollow. The key head 3 is cuboid in appearance, rectangular and hollow inside, and is made of black opaque plastic. The LED lamp I and the LED lamp II are welded on the upper surface of the flexible PCB, are in two different colors and two different quantities, are uniformly distributed according to the positions of the annunciator marks and are positioned right below the marks. The key base 9 is of a hollow rectangular structure and is made of black opaque plastic. The silica gel pad cap 10 is a circular patch.

As shown in fig. 4, the touch switch 17 is soldered to the light guide control panel main PCB15, and the annunciator key assembly is soldered to the light guide control panel main PCB15 through the single PIN connector 16. The moving part of the flexible PCBA is well formed and does not have sharp folding, the moving part is stuck to the side wall of the touch switch 17 by using an adhesive material, and the annunciator moves along with the key at the same time. And (4) installing a panel 14 to finish the integral assembly of the light guide control panel.

Energizing and measuring the annunciator identifies the brightness. Referring to the final brightness requirement, the surface of the annunciator sign 11 is sprayed with a paint spray 13. The mark 11 becomes a semi-transparent mark, and the effect of 'dead head' is realized.

The light guide control panel is disassembled, and the thickness of the silica gel pad cap 10 is adjusted to meet the requirements of key force and key stroke.

As shown in fig. 5, on the flexible PCB8, two LEDs one 6 are connected in parallel to satisfy the light emission margin requirement, and two LEDs two 7 are connected in parallel to satisfy the light emission margin requirement. Two groups of light-emitting circuits are connected with a common voltage input end 'LIGHT +', and the loops of the two groups of light-emitting circuits are respectively connected with 'LIGHT _ 1-' and 'LIGHT _ 2-'. The current limiting resistors R1 and R2 cannot be soldered to the flexible PCB8 due to space limitations, and are therefore soldered to the main PCB 16. The tact SWITCH 17 and the input terminal "SWITCH-IN" and the output terminal "SWITCH-OUT" are located on the main PCB 16.

The foregoing description is only exemplary of the preferred embodiments of the application and is provided for the purpose of illustrating the general principles of the technology and the like. Meanwhile, the scope of the present invention is not limited to the specific combinations of the above-described technical features, and other technical features that are arbitrarily combined with each other or equivalent features may be included without departing from the scope of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (7)

1. The utility model provides a button structure of integrated double-colored dead head annunciator, includes transparent inserts (1), silica gel packing ring (2), presses button head (3), astigmatism piece (4), light polarization piece (5), LED lamp (6), LED lamp two (7), flexible PCB (8), key-press base (9) and silica gel pad cap (10), characterized by: the transparent insert (1) is clamped on the upper surface of the key head (3) through a trapezoidal groove, and is flush with the surface of the trapezoidal groove clamp, the silica gel gasket (2) is arranged on the flange surface of the key head (3), the light diffuser (4) and the light polarization plate (5) are sequentially pasted below the transparent insert (1) from top to bottom from the inside of the key head (3), the LED lamp I (6) and the LED lamp II (7) are welded on the upper surface of the flexible PCB (8), the flexible PCB (8) and the key base (9) are clamped below the key head (3) through a step groove to form a key assembly body, wherein the key head (3) is sealed and stuck on the key base (9), the upper surface of the key base (9) is connected with the flexible PCB (8) through a clamping groove, and the lower surface of the key base is connected with the silica gel pad cap (10) through a clamping groove.

2. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the transparent insert (1) is transparent organic glass.

3. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the silica gel gasket (2) is a silicone rubber elastomer sealing gasket with good weather resistance.

4. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the key head (3) and the key base (9) jointly form a key main body structure, an inner cavity is formed, and the key main body structure is made of black opaque plastics.

5. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the LED lamp I (6) and the LED lamp II (7) are light sources with two different colors and are respectively provided with a plurality of numbers.

6. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the flexible PCB (8) is used for realizing the electric lap joint of the annunciator key and the light guide control panel.

7. The key structure of the integrated bicolor dead-head annunciator of claim 1, wherein: the silica gel pad cap (10) is an elastomer adjusting gasket made of silicon rubber.

Images