CN201655619U

CN201655619U - Keyboard assembled structure

Info

Publication number: CN201655619U
Application number: CN2010201701985U
Authority: CN
Inventors: 蔡火炉
Original assignee: Sunrex Technology Corp
Current assignee: Sunrex Technology Corp
Priority date: 2010-04-26
Filing date: 2010-04-26
Publication date: 2010-11-24
Anticipated expiration: 2020-04-26

Abstract

The utility model discloses a keyboard assembled structure, which overcomes the defect that in the prior art the multi-layered thin stack assemblies of the guide light keyboard are formed integrally by viscose. The keyboard assembled structure is integrally assembled by a plurality of light-transmitting key caps, a plurality of bridges, a plastic gasket, a key frame board, a thin-film circuit board, a spaced insulating board, a light-transmitting diaphragm and a plurality of fasteners on a baseboard; wherein, the fasteners are plastic bolt-shaped elements; the positions corresponding to the fasteners on the key frame board, the thin-film circuit board, the plastic gasket and the spaced insulating board are respectively penetrated with a plurality of through holes; the positions corresponding to the fasteners on the light-transmitting diaphragm are penetrated with a plurality of joint faces; the bottom surfaces of the rods of the fasteners pass through the corresponding through holes and arranged on the mating face of the light-transmitting diaphragm through the high-frequency hot melting; the thin stack assemblies including the key frame board, the thin-film circuit board, the spaced insulating board, the light-transmitting diaphragm and the like are welded integrally.

Description

Assembling structure of keyboard

Technical Field

The present invention relates to a keyboard assembly structure, and more particularly to an assembly structure between thin layered stack assemblies using high frequency heat melting to weld a plurality of fasteners to the keyboard.

Background

At present, notebook computers are widely accepted and adopted by consumers because of their convenience in carrying and processing document data and real-time communication. The keys of the current notebook computer keyboard are all in a thin key structure, and a bridge type supporting structure is mainly assembled and connected between a key cap and a bottom plate of a character key. Although the thin bridging-type keyboard structure has the advantages of ultra-thin volume, light weight and precise operation, the keyboard itself does not provide a light-transmitting structure for auxiliary illumination, so the keyboard can only be operated in a bright place, but cannot be operated in a dark place, thereby causing inconvenience in operation on special occasions, and therefore the applicant company develops and applies for the following: the light guide plate and backlight module of the light-emitting keyboard (number of patent certificate: M306689) and the 7,608,792 patent of the present invention are disclosed, wherein the aforementioned patent has the light guide structure of the keyboard, but still cannot make the keys generate uniform light transmission brightness, and the aforementioned patent assembles the multi-layer thin stack components (such as the thin film circuit board, the spacing insulation board and the membrane) in the keyboard into a whole by the way of glue, which results in the difficulty of alignment and the defect of glue contamination treatment among the light guide components, the assembling structure is not reasonable, and the assembling efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an assembly structure of a keyboard, which can solve the problem of the conventional light guiding keyboard that the multi-layer thin stack assembly is integrated with the adhesive.

The utility model discloses an assembly structure of a keyboard, which is integrally assembled on a bottom plate by a plurality of light-transmitting keycaps, a plurality of bridges, a plastic gasket, a key frame plate, a film circuit board, a spacing insulation plate, a light guide membrane and a plurality of fasteners; wherein,

the plastic gasket is a rectangular sheet element covered on the key frame plate, and a plurality of through holes for accommodating the joint part are arranged at proper positions on the plastic gasket in a penetrating way;

the joint is a bolt-shaped element made of plastic materials, and each joint comprises a head part and a rod part;

the key frame plate is arranged on the bottom surface of the plastic gasket, and a plurality of through holes are arranged on the key frame plate corresponding to the positions of the fasteners in a penetrating way;

the film circuit board is a light-transmitting film circuit board and is electrically connected with a plurality of light-emitting diode (LED) light sources, and a plurality of through holes are arranged on the film circuit board corresponding to the positions of the joint parts in a penetrating way;

the interval insulation board is a light-transmitting plastic soft board assembled at the lower layer of the thin-film circuit board, and a plurality of through holes are arranged on the interval insulation board corresponding to the positions of the fasteners in a penetrating way;

the light guide film is a film light guide assembly arranged between the interval insulating plate and the bottom plate, and a plurality of joint surfaces are preset on the light guide film corresponding to the positions of the joint pieces, so that the bottom surface of the rod part of the joint piece can penetrate through the corresponding through holes and then can be hot-melted on the joint surface positions on the light guide film through high-frequency waves.

The utility model discloses in, based on the setting of above-mentioned fastener and thru hole, can utilize high frequency hot melt mode in order to fuse respectively a plurality of fasteners in between the thin form stratiform stack subassembly of this keyboard, promoted the accuracy nature of keyboard equipment, and then promote the accurate performance that the keyboard was controlled.

Drawings

Fig. 1 is an exploded perspective view of the assembly structure of the keyboard of the present invention.

Fig. 2 is a partially enlarged exploded perspective view of the assembly structure of the keyboard of the present invention, which is an assembly structure showing a single key.

Fig. 3 is an assembled perspective view of a portion of the components of fig. 2.

Fig. 4 is a schematic sectional view of the single key assembly of fig. 2.

Fig. 4A is an enlarged schematic view of a portion a in fig. 4.

Fig. 5 is a schematic view of the usage state of fig. 2, which shows the pressing state of a single key.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings.

Referring to fig. 1 to 5, the assembly structure of the keyboard of the present invention is mainly to improve the assembly structure between the thin layered stack components in a bridge keyboard 10; the keyboard 10 is integrally assembled on a bottom plate 50 by a plurality of bridges 11, a plurality of transparent keycaps 12, a plastic pad 14, a key frame 13, a thin film circuit board 20, a spacer insulating plate 25, a light guide membrane 30 and a plurality of joints 40.

The transparent keycap 12 is a transparent pressing component with a square shape, the bottom surface of the keycap 12 is pivoted to the pivot position of the top edge of the bridge 11, and the pivot of the bottom edge of the bridge 11 is pivoted to the corresponding receiving slot position on the key frame plate 13, so as to form a thin bridge type keyboard pressing structure (the technology is prior art, and therefore, the technology is not repeated).

The plastic pad 14 is a rectangular sheet element covering the key frame 13, an elastic component 15 is respectively assembled on the plastic pad 14 corresponding to the bottom surface of each transparent keycap 12, so as to push the transparent keycap 12 upwards through the elastic component 15, thereby providing an elastic pressing structure of the keyboard, the elastic component 15 is pressed to downwards touch a circuit breaking point 21 conducting the thin film circuit board 20 to generate a key signal, and a plurality of through holes 141 are arranged at proper positions on the plastic pad 14 in a penetrating manner to accommodate the joint 40.

The joint 40 is a bolt-shaped element made of plastic material, the joint 40 includes a head portion 41 and a rod portion 42 extending from the bottom surface thereof, an annular pressing surface 411 is formed between the bottom surface of the head portion 41 and the rod portion 42, and the thin layered stack assembly in the keyboard 10 is welded into an integral structure by a plurality of joints 40 and high frequency heat melting technology.

The key frame plate 13 is disposed on the bottom surface of the plastic gasket 14, a plurality of through holes 131 are formed on the key frame plate 13 corresponding to the positions of the fasteners 40, the through holes 131 are only suitable for the rod portion 42 of the fasteners 40 to pass through, the press-fit surface 411 of the head portion 41 of the fastener 40 is pressed on the peripheral position of the through holes 131 of the key frame plate 13, and the aperture of the through holes 131 of the key frame plate 13 is smaller than the aperture of the through holes 141 of the plastic gasket 14.

The thin film circuit board 20 is a transparent thin film board formed with a plurality of circuits for controlling key input signals, the bottom edge of the thin film circuit board 20 is electrically connected with a plurality of light emitting diode LED 23 light sources at appropriate positions to provide light guiding efficiency of the keyboard, the thin film circuit board 20 is respectively formed with a circuit breaking point 21 corresponding to the central point of the transparent keycap 12, a plurality of through holes 201 are formed on the thin film circuit board 20 corresponding to the positions of the fasteners 40, and the through holes 201 are only suitable for the rod parts 42 of the fasteners 40 to pass through.

The spacing insulation board 25 is assembled on the lower layer of the thin film circuit board 20, and is a transparent plastic soft board with insulation effect, the board surface of the board is corresponding to the open circuit point 21 position of each circuit to form the corresponding spacing hole 26, a plurality of through holes 251 are arranged on the spacing insulation board 25 corresponding to each joint element 40, and the through holes 251 are only suitable for the rod part 42 of the joint element 40 to pass through, and the aperture sizes of the through holes 251, the through holes 201 and the through holes 131 are the same and are all smaller than the aperture size of the through hole 141 of the plastic gasket 14.

The light guiding membrane 30 belongs to a thin film made of transparent silica gel, and is a thin film light guiding assembly arranged between the interval insulating plate 25 and the bottom plate 50, and utilizes the light source of the light emitting diode LED 23 to reflect and guide light to the position of the light-transmitting keycap 12 at the top end, a plurality of joint surfaces 301 are preset on the light guiding membrane 30 corresponding to the positions of the joint pieces 40, so that the bottom surface of the rod part 42 of the joint piece 40 can be melted on the positions of the plurality of joint surfaces 301 on the light guiding membrane 30 through high-frequency heat, and further, thin layered stack assemblies such as the key frame plate 13, the thin film circuit board 20, the interval insulating plate 25 and the light guiding membrane 30 are welded into an integral structure; wherein a plurality of key

reflective regions

32, 33, 34, 35 … are distributed on the light guide film 30 corresponding to the plurality of elastic components 15, and each of the

reflective regions

32, 33, 34, 35 … is correspondingly arranged according to the different distances between the light guide film and the light source of the LED 23, and a plurality of arrays of reflective sheets (such as the exemplary single reflective sheet 321 shown in fig. 4) are coated and printed on the bottom surface of each of the

reflective regions

32, 33, 34, 35 …, and the plurality of arrays of reflective sheets have different arrangement densities, so that the same vertical reflective brightness can be properly adjusted and generated according to the different distances between the reflective sheets and the light source of the LED63, thereby improving the uniform light guide effect of the whole light-transmitting keyboard; the center of the top surface of each

key reflection area

32, 33, 34, 35 … is coated with a conductive contact 31, and each conductive contact 31 is disposed corresponding to each spaced through hole 26 and the open circuit point 21 of each circuit.

The bottom plate 50 is a plate body supporting the key frame plate 13, the thin film circuit board 20, the spacer insulating plate 25 and the light guide film 30, so that it is assembled into a complete key structure of the keyboard.

The main structural features and practical effects of the present embodiment are briefly described as follows: in the present embodiment, the key frame 13, the thin film circuit board 20, the insulating spacer plate 25 and the light guide film 30 are aligned and positioned in sequence from top to bottom, and the plurality of plastic fasteners 40 pass through the corresponding through

holes

131, 201, 251 of the thin layered stack assemblies in sequence, respectively, and then the bottom surface of the rod 42 of the fastener 40 is welded to the position of the joint surface 301 of the light guide film 30 by high frequency heat melting, so that the key frame 13, the thin film circuit board 20, the insulating spacer plate 25 and the light guide film 30 are partially welded into an integral structure, which is beneficial to the subsequent keyboard assembly operation and improves the assembly efficiency, and the present invention utilizes the plurality of fasteners 40 to align, position and fasten the thin layered stack assemblies, thereby improving the keyboard assembly accuracy, and avoid the disadvantage of improper loosening and displacement between the layered stack components, thereby specifically improving the precision efficiency of keyboard operation.

To sum up, the utility model relates to an assembly structure of keyboard, it utilizes high frequency hot melt mode in order to fuse a plurality of fasteners respectively in between the thin form stratiform stack subassembly of this keyboard, has promoted the accuracy nature of keyboard equipment, and then has promoted the accurate nature efficiency that the keyboard was controlled.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. An assembly structure of a keyboard is characterized in that a plurality of light-transmitting keycaps, a plurality of bridges, a plastic gasket, a key frame plate, a thin film circuit board, a spacing insulation plate, a light guide membrane and a plurality of fasteners are integrally assembled on a bottom plate; wherein,

2. The keyboard assembly of claim 1, wherein the transparent key cap is a substantially square transparent pressing member, the bottom surface of the key cap is pivotally connected to the top edge of the bridge at a pivot position, and the bottom edge of the bridge is pivotally connected to the corresponding receiving slot on the key frame plate at a pivot position, so as to form a thin bridge keyboard pressing structure.

3. The assembly structure of claim 1, wherein the plastic pad has a plurality of elastic members, the elastic members upwardly support the transparent keycap and are pressed to downwardly contact the thin film circuit board to generate key signals.

4. The assembly structure of claim 1, wherein the through holes on the insulating plate, the thin film circuit board and the light guide film have the same diameter, and are only suitable for being penetrated by the rod of the joint and are smaller than the diameter of the through holes of the plastic gasket.

5. The assembly structure of claim 1, wherein an annular pressing surface is formed between the bottom surface of the head portion of the engaging member and the shaft portion, and the pressing surface is pressed against the peripheral position of the through hole of the key frame plate.

6. The assembly structure of claim 1, wherein a plurality of key reflection areas are distributed on the light guide film corresponding to the plurality of elastic elements, each of the key reflection areas is disposed corresponding to a different distance from the LED light source, a plurality of arrays of reflection sheets are coated and printed on the bottom surface of each of the key reflection areas, the arrays of reflection sheets have different arrangement densities, and can be properly adjusted to generate the same vertical reflection brightness corresponding to the different distances from the LED light source, and the central position of the top surface of each of the key reflection areas is correspondingly coated with the circuit conductive contacts.

7. The assembly structure of claim 1 or 6, wherein a circuit breaking point is formed on the thin film circuit board corresponding to the center point of the transparent keycap for conducting signals when the corresponding circuit conducting point on the light guiding film is pressed up and down.

8. The assembly structure of claim 1, wherein the bottom plate is a plate body supporting the key frame plate, the thin film circuit board, the spacer insulating plate and the light guide film.