CN216213050U - Interlayer sheet type luminous key core module with light guide film - Google Patents

Abstract

The utility model discloses a sandwich-type light-emitting key core module with a light guide film, which comprises a supporting structure, an insulating layer, a circuit layer, a partition layer, a conduction layer, the light guide film, a composite film, an elastic conduction piece, an LED lamp and a key cap, wherein a first through hole is formed in the partition layer corresponding to the position of the key cap, the elastic conduction piece is arranged corresponding to the position of the first through hole, the elastic conduction piece is fixedly arranged above the conduction layer, a conducting piece is fixedly arranged below the conduction layer corresponding to the position of the elastic conduction piece, the light guide film is provided with a second through hole corresponding to the first through hole, a third through hole is arranged in the composite film corresponding to the position of the key cap, a fourth through hole is formed in the partition layer corresponding to the position of the LED lamp, a fifth through hole is formed in the conduction layer corresponding to the position of the LED lamp, a sixth through hole is formed in the light guide film corresponding to the position of the LED lamp, the LED lamp is arranged in the fourth through hole, In the fifth through-hole and the sixth through-hole, the keycap is arranged above the elastic conduction piece.

Description

Interlayer sheet type luminous key core module with light guide film

Technical Field

The utility model relates to a key core module, in particular to an interlayer sheet type luminous key core module with a light guide film, which is applied to the field of computer equipment accessories.

Background

At present, the keyboard is the most common and the most main input device, and English letters, Chinese characters, numbers, punctuations and the like can be input into a computer through the keyboard, so that commands, data input and the like are sent to the computer. It can be said that since the date of computer generation, keyboards are one of the essential peripherals of computers.

Along with the continuous development of keyboard, in order to make the keyboard have better result of use, luminous keyboard (or called as keyboard in a poor light) just should be transported and come, and it designs into light-transmitting structure with the key cap, utilizes the illumination bright key cap that backlight unit sent, more is applicable to the input use at night on the one hand, conveniently sees the word on the key cap clearly, and on the other hand also can produce the cool effect more. The luminous keyboard structure among the prior art all sets up a backlight unit in that the keyboard is inside, gives out light through backlight unit, illuminates the key cap, and backlight unit generally includes that photomask, leaded light membrane, reflectance coating and LED constitute, and photomask, leaded light membrane and reflectance coating are range upon range of and are set up, and LED sets up in leaded light membrane side, and the light that LED sent is penetrated in the leaded light membrane, leads to each key cap department through the leaded light membrane and passes through to illuminate the key cap. The current common backlight keyboard has the inherent disadvantages due to the structural limitation: (1) due to the limitation of the backlight module, especially the LEDs in the backlight module, the thickness of the whole backlight module is more than 0.5mm, so that the light and thin of the whole keyboard are influenced; (2) the structure that it adopted leaded light membrane cooperation LED to give out light, then its LED need select to adopt high-power high bright LED, high-power high bright LED can cause its consumption too high on the one hand, cause power consumptive height, on the other hand, high-power high bright LED calorific capacity is very high in the use, because LED only sets up one or several, it is concentrated to generate heat, can cause the radiating effect not good, keyboard local heating scheduling problem, influence customer's use experience, especially when it is used in notebook computer, still can influence notebook computer's self radiating effect.

Disclosure of Invention

Aiming at the defects of thick thickness, high power consumption and poor heat dissipation of the light-emitting keyboard in the prior art caused by the fact that the backlight module is adopted for lighting, the utility model provides the sandwich-layer type light-emitting key core module with the light guide film.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a sandwich-type luminous key core module with a light guide film comprises a supporting structure, an insulating layer, a circuit layer, a partition layer, a conduction layer, the light guide film, a composite film, an elastic conduction piece, an LED lamp and a key cap, wherein the insulating layer is arranged on the supporting structure, the circuit layer is arranged on the insulating layer, a switch is arranged on the circuit layer corresponding to the position of the key cap, the partition layer is arranged above the insulating layer, a first through hole is arranged on the partition layer corresponding to the position of the key cap, the elastic conduction piece is arranged corresponding to the position of the first through hole, the conduction layer is arranged above the partition layer, the elastic conduction piece is fixedly arranged above the conduction layer, a conductive piece is fixedly arranged below the conduction layer corresponding to the position of the elastic conduction piece, the conductive piece is arranged corresponding to the first through hole, the light guide film is arranged above the conduction layer, a second through hole is arranged above the light guide film corresponding to the first through hole, and the composite film is arranged above the light guide film, the composite film is provided with a third through hole corresponding to the position of the keycap, the LED lamp is installed on the circuit layer and is arranged corresponding to the position of the keycap, a fourth through hole corresponding to the position of the LED lamp is formed in the partition layer, a fifth through hole corresponding to the position of the LED lamp is formed in the conduction layer, a sixth through hole corresponding to the position of the LED lamp is formed in the light guide film, the LED lamp is installed in the fourth through hole, the fifth through hole and the sixth through hole, and the keycap is arranged above the elastic conduction piece.

Furthermore, the support structure adopts a steel sheet, and the thickness of the steel sheet is 0.10-0.25 mm.

Furthermore, the insulating layer is fixedly installed with the supporting structure by adopting an adhesive layer, and the thickness of the insulating layer is 0.02 mm-0.05 mm.

Furthermore, the thickness of the spacer layer is 0.02-0.07 mm.

Furthermore, the thickness of the light guide film is 0.08-0.12 mm.

Further, the thickness of the composite film is 0.020-0.30 mm.

Furthermore, 1-4 LEDs can be arranged at the position corresponding to each keycap.

Furthermore, a scissor pin is arranged between the keycap and the elastic conduction piece, and the keycap and the scissor pin are respectively arranged on the steel sheet.

Furthermore, the steel sheet is provided with mounting holes corresponding to the positions of the scissor feet, and the scissor feet are inserted into the mounting holes.

Further, the mounting holes are four, and openings between the two mounting holes are opposite or oppositely arranged.

The utility model has the beneficial effects that: the utility model provides a sandwich-type light-emitting key core module with a light guide film, which utilizes an LED (light-emitting diode) arranged corresponding to a key cap to directly illuminate a key cap area, thereby omitting a backlight module structure, reducing the thickness of a keyboard as a whole and being more beneficial to the light and thin design of the keyboard; on the other hand, adopt LED directly to illuminate the key cap district, LED can select for use low-power consumption component, not only is favorable to reducing the consumption on the whole, still can reduce its self calorific capacity, simultaneously, because LED adopts distributed design, be favorable to the heat dissipation more, especially use in notebook computer, can also give off through the supplementary heat that produces notebook self (mainly CPU) of keyboard.

Drawings

FIG. 1 is a schematic structural diagram of a single keycap of a sandwich-type light-emitting key core module with a light guide film according to the present invention in a partially exploded state;

FIG. 2 is a schematic view of a structure of a single key cap with a light guide film in an exploded partial section of a sandwich type light-emitting key core module according to the present invention;

FIG. 3 is a schematic diagram of a partial top view of a single keycap of a sandwich type light-emitting key core module with a light guide film according to the present invention;

fig. 4 is a schematic structural view of a single keycap local steel sheet of the sandwich sheet type light-emitting key core module with the light guide film provided by the utility model.

Reference numerals: 1-steel sheet, 2-adhesive layer, 3-insulating layer, 4-circuit layer, 5-separator layer, 6-conducting layer, 7-light conducting film, 8-composite film, 9-scissor pin, 10-keycap, 11-elastic conducting piece, 12-LED lamp, 13-switch, 14-conducting sheet, 15-first through hole, 16-second through hole, 17-third through hole, 18-fourth through hole, 19-fifth through hole, 20-sixth through hole, 21-mounting hole and 22-protrusion.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1-4, the present invention provides a sandwich-type light-emitting key core module with a light-guiding film, which is shown as a single key cap structure of a keyboard, and includes a supporting structure, an insulating layer 3, a circuit layer 4, a spacer layer 5, a conducting layer 6, a light-guiding film 7, a composite film 8, an elastic conducting member 11, an LED lamp 12 and a key cap 10, wherein the insulating layer 3 is disposed on the supporting structure, the circuit layer 4 is disposed on the insulating layer 3, the circuit layer 4 is disposed with a switch 13 corresponding to the key cap 10, the spacer layer 5 is disposed above the insulating layer 3, the spacer layer 5 is disposed with a first through hole 15 corresponding to the key cap 10, the elastic conducting member 11 is disposed corresponding to the first through hole 15, the conducting layer 6 is disposed above the spacer layer 5, the elastic conducting member 11 is fixedly mounted above the conducting layer 6, a conducting plate 14 is fixedly disposed below the conducting layer 6 corresponding to the elastic conducting member 11, the conducting sheet 14 is arranged corresponding to the first through hole 15, the light guiding film 7 is arranged above the conducting layer 6, the light guiding film 7 is provided with a second through hole 16 corresponding to the first through hole 15, the composite film 8 (defined as a composite film due to its reflection and shading functions) is arranged above the light guiding film 7, the composite film 8 is provided with a third through hole 17 corresponding to the position of the keycap 10, so that the light emitted by the LED lamp 12 can be irradiated into the light guiding film 7 and then emitted out from the composite film 8, thereby illuminating the keycap 10, the LED lamp 12 is arranged on the circuit layer 4 and is arranged corresponding to the keycap 10, the spacer layer 5 is provided with a fourth through hole 18 corresponding to the position of the LED lamp 12, the conducting layer 6 is provided with a fifth through hole 19 corresponding to the position of the LED lamp 12, the light guiding film 7 is provided with a sixth through hole 20 corresponding to the position of the LED lamp 12, the LED lamp 12 is arranged in the fourth through hole 18, the fifth through hole 19 and the sixth through hole 20, the key cap 10 is disposed over the elastic conductive piece 11. In this embodiment, the conductive sheet 14 is formed on the light guiding film 7 by coating with silver paste, in this embodiment, the elastic conducting member 11 is an elastic sheet, which may also be called Rubber Dome or Dome sheet, and in specific implementation, it may also be in the form of Rubber or silicone key, mainly playing the role of elastic support and increasing hand feeling. In this embodiment, insulating layer 3 chooses polyimide insulating material for use and makes for adhering to and fixed line layer 4 uses, and during the concrete implementation, insulating layer 3 and line layer 4 also can adopt other circuit board structures among FPC structure or the prior art, and insulating layer 3 also can choose for use other insulating materials that can adapt to adhere to line layer 4 to make. The thickness of the insulating layer 3 is 0.02 mm-0.05 mm, and the requirement of the circuit layer 4 for adhesion is met. In this embodiment, the circuit layer 4, i.e., the copper foil circuit, is attached to the insulating layer 3 and may be formed by a conventional circuit board processing process such as etching, silk-screen printing or pasting, the circuit structure of the circuit layer 4 is a conventional keyboard circuit and a conventional LED lamp driving circuit structure, which are not limited in the present invention, and a switch 13, i.e., a keyboard key switch, is disposed on the circuit layer 4 at a position corresponding to the key cap, and the switch 13 has the same structure as a conventional keyboard.

In the embodiment, the support structure adopts the steel sheet 1, and the thickness of the steel sheet is 0.10 mm-0.25 mm. Not only can meet the strength requirement, but also can not make the whole body too thick. When the utility model is applied to a scissor-foot type keyboard, the steel sheet 1 is also provided with a mounting structure, such as: the mounting holes, the hooks and the like are used for mounting scissors feet, key caps and the like, and the mounting structure of the keyboard is the same as that of a conventional keyboard structure and is not described again.

In this embodiment, the insulating layer 3 is fixedly mounted with the supporting structure by using the adhesive layer 2, and the thickness of the insulating layer 3 is 0.02mm to 0.05 mm. The adhesive layer 2 is preferably thermosetting adhesive, so that the processing is convenient, materials such as adhesive sticker can be selected during specific implementation, the thickness of the adhesive layer 2 can be ignored, and only the bonding requirement is met. Or, during production and processing, the adhesive layer 2 is not arranged, and other fixing structures are selected to fixedly install the insulating layer 3 and the steel sheet 1 together, or the insulating layer 3 is directly arranged on the steel sheet 1.

In the embodiment, the thickness of the spacer layer 5 is 0.02-0.07 mm. The spacer layer 5 is made of PET (polyethylene terephthalate), preferably 0.05mm, and mainly plays a role in insulation, and in particular, other materials with insulating property can be used.

In this embodiment, the thickness of the light guide film 7 is 0.08-0.12 mm. The light guide film 7 is made of PET (polyethylene terephthalate), preferably 0.10mm, and other materials may be used in specific implementation.

In this embodiment, the thickness of the composite film 8 is 0.020-0.30 mm. Preferably 0.025mm, and in particular embodiments, other materials may be used. 8 lower floors of complex film are provided with white printing ink, be used for the reflection of light, can make during the light reflection that upwards that LED lamp 12 sent goes back leaded light membrane 7, in order to strengthen its luminance, 8 upper strata of complex film are provided with black printing ink, be used for the shading, in order to prevent other regional printing opacity that remove key cap 10 positions, influence the whole result of use of keyboard, in this embodiment, white printing ink and black printing ink adopt the printing mode to set up on complex film 8, during concrete implementation, also can choose other mode settings for use, if: spraying, silk-screen printing and the like. The composite film 8 is not provided with ink at the position corresponding to the keycap 10, so that light in the light guide film 7 can be emitted from the position to illuminate the keyboard keys. During specific implementation, composite film 8 also can select for use self to be white membrane, at the printing black printing ink of top layer, perhaps selects for use self to be black membrane, at the white printing ink of bottom layer printing, and has seted up the through-hole corresponding to key cap 10 position department to make light pass through.

In this embodiment, 1 to 4 LEDs may be disposed at positions corresponding to each keycap 10. Generally, 1 or 2 LED lamps 12 can be arranged on a common key, and 2-4 LED lamps 12 are correspondingly arranged on larger and longer keys such as 'enter', 'shift', 'blank', and the like, so that the illumination requirement is met, and more LEDs can be arranged corresponding to one keycap according to the actual requirement. No LEDs may be provided under key caps that do not need to be illuminated.

In this embodiment, the scissor legs 9 are installed between the key cap 10 and the elastic conducting piece 11, and the key cap 10 and the scissor legs 9 are respectively installed on the steel sheet 1. Press key cap 10, extrude scissors foot 9 through key cap 10, continue to push down then press elasticity and switch on a 11, elasticity switches on 11 and takes place deformation, elasticity switches on 11 and pushes down complex film 8 and leaded light membrane 7, 8 leaded light membranes 7 of complex film take conducting strip 14 downstream together, see through the first through-hole 15 on the spacer layer 5, 14 contact switch of conducting strip 13, switch on it, in order to realize the button effect, loosen key cap 10, scissors foot 9 and elasticity switch on 11 kick-backs, 14 break away from switch 13 of conducting strip, break off it.

In this embodiment, wherein ensure scissors foot 9 stability, the position that corresponds scissors foot 9 on the steel sheet 1 is equipped with mounting hole 21, and scissors foot 9 cartridge is in mounting hole 21 for scissors foot 9 is at resilience in-process, and scissors foot 9 part is connected with steel sheet 1 more, increases single key stability, and wherein mounting hole 21 border is equipped with ascending protruding portion 22, makes the protruding portion 22 of mounting hole 21 support scissors foot 9, and the stability when progress increases single key and uses.

In this embodiment, when the scissors are installed, the four mounting holes 21 are provided, the two mounting holes 21 form a group, the two mounting holes 21 under the same horizontal line form a group, and the openings between the two mounting holes 21 are opposite or opposite, so that the scissors pins 9 are clamped in the group of mounting holes 21, the fastening type of the scissors pins 9 is increased, and the scissors pins 9 are prevented from falling off.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims (10)

1. A sandwich-type light-emitting key core module with a light guide film is characterized by comprising a supporting structure, an insulating layer (3), a circuit layer (4), a spacer layer (5), a conduction layer (6), a light guide film (7), a composite film (8), an elastic conduction piece (11), an LED lamp (12) and a key cap (10), wherein the insulating layer (3) is arranged on the supporting structure, the circuit layer (4) is arranged on the insulating layer (3), a switch (13) is arranged on the circuit layer (4) corresponding to the position of the key cap (10), the spacer layer (5) is arranged above the insulating layer (3), a first through hole (15) is arranged on the spacer layer (5) corresponding to the position of the key cap (10), the elastic conduction piece (11) is arranged corresponding to the position of the first through hole (15), the conduction layer (6) is arranged above the spacer layer (5), and the elastic conduction piece (11) is fixedly arranged above the conduction layer (6), a conducting strip (14) is fixedly arranged below the conduction layer (6) corresponding to the position of the elastic conduction piece (11), the conducting strip (14) is arranged corresponding to the first through hole (15), the light guide film (7) is arranged above the conduction layer (6), the light guide film (7) is provided with a second through hole (16) corresponding to the first through hole (15), a composite film (8) is arranged above the light guide film (7), a third through hole (17) is arranged at the position of the composite film (8) corresponding to the keycap (10), the LED lamp (12) is arranged on the circuit layer (4) and is arranged corresponding to the keycap (10), a fourth through hole (18) is arranged at the position of the partition layer (5) corresponding to the LED lamp (12), a fifth through hole (19) is arranged at the position of the conduction layer (6) corresponding to the LED lamp (12), a sixth through hole (20) is arranged at the position of the light guide film (7) corresponding to the LED lamp (12), the LED lamp (12) is arranged in the fourth through hole (18), the fifth through hole (19) and the sixth through hole (20), and the keycap (10) is arranged above the elastic conducting piece (11).

2. The sandwich plate type light-emitting key core module with the light guide film as claimed in claim 1, wherein the support structure is a steel plate (1) with a thickness of 0.10mm to 0.25 mm.

3. The sandwich plate type luminous key core module with the light guide film as claimed in claim 1, wherein the insulating layer (3) is fixedly mounted with the support structure by using the adhesive layer (2), and the thickness of the insulating layer (3) is 0.02mm to 0.05 mm.

4. The sandwich plate type luminous key core module with the light guide film as claimed in claim 1, wherein the thickness of the spacer layer (5) is 0.02-0.07 mm.

5. The sandwich plate type luminous key core module with the light guide film as claimed in claim 1, wherein the thickness of the light guide film (7) is 0.08-0.12 mm.

6. The sandwich plate type luminous key core module with the light guide film as claimed in claim 1, wherein the thickness of the composite film (8) is 0.020-0.30 mm.

7. The sandwich type light-emitting key core module with the light guide film according to claim 1, wherein 1-4 LEDs are arranged at the position corresponding to each key cap (10).

8. The sandwich plate type light-emitting key core module with the light guide film as claimed in claim 2, wherein a scissor pin (9) is installed between the key cap (10) and the elastic conducting piece (11), and the key cap (10) and the scissor pin (9) are respectively installed on the steel sheet (1).

9. The sandwich plate type luminous key core module with the light guide film as claimed in claim 8, wherein the steel plate is provided with mounting holes (21) corresponding to the scissor legs (9), and the scissor legs (9) are inserted into the mounting holes (21).

10. The light guiding film-equipped sandwich plate type luminous key core module as claimed in claim 9, wherein the number of the mounting holes (21) is four, and the openings between the two mounting holes (21) are opposite or reversed.

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