CN222365511U - A novel luminous keycap and keyboard - Google Patents

Abstract

The utility model belongs to the technical field of keyboards, and particularly relates to a novel luminous key cap and a keyboard. The LED lamp comprises a key cap, a light source assembly and an optical microstructure layer, wherein the periphery of the key cap is provided with a downward extending edge, an inner cavity is formed by surrounding the edge, an interlayer is further arranged in the inner cavity, the light source assembly comprises a light source circuit board and an LED lamp arranged on the light source circuit board, the optical microstructure layer is arranged between the back surface of the key cap and the light source circuit board and surrounds the periphery of the LED lamp, and a notch penetrating into the interlayer is further formed in the inner cavity. Changes the traditional key cap structure and is convenient for the development of light weight and thinness.

Description

Novel luminous key cap and keyboard

Technical Field

The utility model belongs to the technical field of keyboards, and particularly relates to a novel luminous key cap and a keyboard.

Background

The keyboard is used as the input device of the electronic equipment, which is provided with peripheral equipment or integrated equipment, the backlight keyboard is increasingly popular in daily use along with the development and upgrading of products, the backlight keyboard at present is characterized in that a backlight board is added on a circuit board of the keyboard on the backlight principle, a light-transmitting character is printed on the surface of a key cap, and a light-proof coating is added on the surface except the character, so that the light on the backlight board is transmitted on the key cap to realize the light emission of the character on the key cap, but the backlight keyboard with the structure is characterized in that the backlight board is added on the original multi-layer circuit board and an iron board, the thickness of the keyboard is increased, and along with the development of lightening and thinning of the electronic equipment, the structure becomes a barrier for reducing the thickness.

Disclosure of utility model

The utility model aims to provide a novel luminous key cap, which changes the structure of the traditional key cap and is convenient for light and thin development.

Based on the structure, the utility model provides a novel luminous key cap, which comprises a key cap, a light source assembly and an optical microstructure layer, wherein the periphery of the key cap is provided with a downward extending edge, an inner cavity is surrounded by the edge, an interlayer is further arranged in the inner cavity, the light source assembly comprises a light source circuit board and an LED lamp arranged on the light source circuit board, the optical microstructure layer is positioned between the back surface of the key cap and the light source circuit board and surrounds the periphery of the LED lamp, and a notch penetrating into the interlayer is further formed in the inner cavity.

The novel luminous key cap is characterized in that the inner cavity is further provided with the sandwich plate, the sandwich plate and the back of the key cap are arranged at intervals to form the sandwich layer, and the notch is formed in the sandwich layer.

According to the novel luminous key cap, the sandwich plate is formed in the inner cavity through secondary injection molding.

The novel luminous key cap is characterized in that the sandwich plate is made of a light-proof material.

According to the novel luminous key cap, the optical microstructure layer is attached to the upper surface of the light source circuit board, and the optical microstructure layer is provided with the through hole for the LED lamp to penetrate.

The novel luminous key cap comprises the optical microstructure layer, and the base layer and the plurality of protruding points which are arranged on the lower end face of the base layer and protruding downwards.

The novel luminous key cap comprises the optical microstructure layer, and the concave points which are arranged on the lower end face of the base layer and are concave upwards.

According to the novel luminous key cap, the clamping hooks are further arranged on the lower side of the sandwich plate.

The novel luminous key cap is characterized in that the clamping hooks and the sandwich plate are integrally formed.

The embodiment of the utility model has the following beneficial effects:

The utility model provides a novel luminous key cap, which changes the structure of the traditional key cap, adds an interlayer for assembling a light source component and an optical microstructure layer in the inner cavity of the key cap, is equivalent to integrating the traditional backlight plate in a single key cap, gathers light emitted by a light source on the back of the key cap through the matching of an LED lamp and the optical microstructure layer, and ensures that the key cap has the light transmission and condensation effects, thereby being convenient for directly arranging a light source in the key cap, eliminating the structure of arranging the backlight plate under the key cap and being beneficial to reducing the whole thickness.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a key cap;

fig. 2 is a schematic structural diagram of a novel light-emitting keycap according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the key cap after installation;

Fig. 4 is an enlarged view of a portion a of fig. 3;

FIG. 5 is a schematic illustration of an optical microstructured layer;

FIG. 6 is a schematic illustration of an optical microstructure layer and a light source assembly after installation;

FIG. 7 is a schematic diagram of a power supply circuit board;

fig. 8 is a circuit diagram of the power supply circuit board.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, the embodiment of the utility model provides a novel light-emitting keycap, which comprises a keycap 1, a light source assembly 3 and an optical microstructure layer 2, wherein the periphery of the keycap 1 is provided with a downward extending edge 12, the edge 12 encloses an inner cavity 102, an interlayer 103 is further arranged in the inner cavity 102, the light source assembly 3 comprises a light source circuit board 31 and an LED lamp 32 arranged on the light source circuit board 31, the optical microstructure layer 2 is positioned between the back 110 of the keycap 1 and the light source circuit board 31 and surrounds the periphery of the LED lamp 32, and a notch 104 penetrating into the interlayer 103 is further formed in the inner cavity 102. The utility model provides a novel luminous key cap, which changes the structure of the traditional key cap, adds an interlayer for assembling a light source component and an optical microstructure layer in the inner cavity of the key cap, is equivalent to integrating the traditional backlight plate in a single key cap, gathers light emitted by a light source on the back of the key cap through the matching of an LED lamp and the optical microstructure layer, and ensures that the key cap has the light transmission and condensation effects, thereby being convenient for directly arranging a light source in the key cap, eliminating the structure of arranging the backlight plate under the key cap and being beneficial to reducing the whole thickness. Moreover, the notch 104 is preset to facilitate the conductive connection of the light source circuit board 31.

In this scheme, the inner chamber 102 still is equipped with the sandwich plate 19, the sandwich plate 19 with the back 110 interval setting of key cap 1 forms the intermediate layer 103, breach 104 is located on the intermediate layer 103. After the setting is completed, the light source component is not visible from the back side of the key cap 1, so that a certain protection effect can be achieved, and the light source component can be prevented from loosening in daily use of the key cap.

For ease of manufacturing and installation, the sandwich panel 19 is formed in the cavity 102 by two-shot molding. Namely, after the key cap is molded for the first time, the light source assembly 3 and the optical microstructure layer 2 are installed in the inner cavity 102, and the sandwich plate 19 is molded in the inner cavity 102, which is equivalent to the integral structure of the sandwich plate 19 and the key cap.

In this embodiment, the sandwich plate 19 is made of opaque material. The micro-structure light guide layer is arranged below the key cap 1, light of the LED is refracted and reflected through the micro-structure, so that the light can be uniformly distributed on the surface of the key cap to illuminate characters above the key cap, and the aim of lighting key characters is fulfilled. The lower sandwich plate 19 is made of opaque materials, so that light is ensured to be concentrated and transmitted upwards, and the bright light effect is improved. The LED size of this embodiment is 0.6x0.3x0.13mm or the same type of lamp.

In the embodiment of the utility model, the optical microstructure layer 2 is attached to the upper surface of the light source circuit board 31, and a through hole for the LED lamp 32 to penetrate is formed in the optical microstructure layer 2. The LED lamp 32 of this embodiment is equivalent to the inside in the thickness direction of the optical microstructure layer 2, and the light 101 is emitted into the inside of the optical microstructure layer 2 from the thickness direction, and when encountering the optical microstructure, the light is emitted at the optical microstructure, thereby achieving the light-condensing effect.

In this embodiment, as shown in fig. 5, the optical microstructure layer 2 includes a base layer 201 and a plurality of bumps disposed on the lower end surface of the base layer 201 and protruding downward. Or may be a plurality of concave points which are provided on the lower end surface of the base layer 201 and are concave upward. The substrate 201 is used as a carrier attached to the light source circuit board, and the substrate 201 is light-transmitting, and is also convenient to set an optical microstructure, preferably, in the scheme, a light guide film can be adopted for the substrate 201.

Furthermore, the optical microstructure is cylindrical or polygonal. The device has a simple structure and is easy to realize the refraction and condensation effect.

Of course, the optical microstructure is a polygon with a tip. Such as triangle or diamond, the above-described effects can be achieved by a simple structure as well.

In addition, in order to achieve the light-condensing effect at a plurality of places in the key cap, a plurality of optical microstructures 2 form a plurality of optical microstructure sets which are distributed at intervals. The light emitted from the light source in the lamp cavity 101 is equivalent to light passing along the inner layer of the key cap and is concentrated on the optical microstructure sets to form a plurality of concentrated light condensation, so that various light effects can be conveniently realized on the surface of the key cap.

Specifically, in this embodiment, the optical microstructure sets include a first optical microstructure set 21 distributed along the periphery of the through hole, a second optical microstructure set 22, a third optical microstructure set 23, a fourth optical microstructure set 24, a fifth optical microstructure set 25, a sixth optical microstructure set 26, and a seventh optical microstructure set 27, which are located at the periphery of the first optical microstructure set 21 and distributed along the periphery of the back surface 110.

In order to improve the light emitting effect, the key cap 1 is also provided with a lamp cavity 101 corresponding to the LED lamp 32 on the back 110. Light emitted by the LED lamp can be transmitted inside the key cap through the lamp cavity 101, and the key cap can be used for transmitting the light on the key cap through printing light-transmitting characters on the surface 111 and adding a light-proof coating on the surface except the characters, so that the light on the backlight plate is transmitted to the key cap, and the light of the characters on the key cap is emitted

After the key cap is connected, as shown in fig. 3 and 4, the scissors supporting legs 61 and the elastic body 62 connected by the hooks 5 are connected to form a key cap module, the lower side of the key cap is also provided with a supporting plate 71, a conductive circuit board 72 arranged on the upper side of the supporting plate 71 and a power supply circuit board 73 arranged on the lower side of the supporting plate 71, the scissors supporting legs 61 are connected to the supporting plate 71, the supporting plate 71 is generally an iron plate or a steel plate, the scissors supporting legs 61 are equivalent to movable supports, and a supporting structure reset after pressing is formed by matching with the elastic body 62. The scissors supporting legs 61 support the key cap 1 so that a gap is provided between the key cap 1 and the conductive wiring board 72. In order to ensure that the light source assembly in the key cap can keep conductive, the supporting plate 71 and the conductive circuit board 72 are provided with notches for inserting the contact pin group 4 into contact connection with the power supply circuit board 73.

Specifically, in the embodiment of the present utility model, the contact pin set 4 includes a positive contact pin and a negative contact pin, and the positive contact pin includes a needle sleeve 41, a thimble 42 disposed in the needle sleeve 41, and a spring 43, where the thimble 42 has a top end 421 extending out of the needle sleeve 41, and the spring 43 abuts against the end of the needle sleeve 41. Because the contact pin group 4 is connected to the light source circuit board 31, the light source circuit board 31 moves up and down along with the pressing reset of the key cap 1, and the spring 43 and the thimble 42 are matched, so that the light source circuit board 31 can move up and down, and the power supply circuit board 73 at the lower end contacted with the spring 43 or the needle sleeve 41 through the thimble 42 can also be kept.

Of course, the thimble 42 may extend from the upper end or the lower end of the needle sleeve 41, and if extending from the lower end, i.e. the top 421 of the thimble 42 contacts the power supply circuit board 73 below, the spring is located on the other side. In this embodiment, in order to conform to the habit of use and to maintain the touch, the tip 421 extends from the upper side of the needle sleeve 41 and is connected to the light source circuit board 31, one end of the spring 43 abuts against the thimble 42, and the other end abuts against the power supply circuit board 73. Also seen in the drawing, the tip 421 thereof has the uppermost end of the needle sheath 41 protruding a distance, which is understood to be the distance by which the light source circuit board 31 moves down.

The contact pin group 4 is added, which inevitably causes more resistance to pressing the key cap, and in order to make the key cap more balanced for a user to have better hand feeling, the contact pin group 4 is close to the corner of the key cap 1 or the positive contact pins and the negative contact pins are distributed on two sides of the LED lamp 32. The corresponding power supply circuit board 73 only needs to set 1 group of corresponding positive and negative contact points at the corresponding position of each key cap 1.

Of course, a plurality of groups of contact pin groups 4 can be provided, and the contact pin groups 4 are diagonally arranged or distributed at four side corners of the key cap 1. The corresponding power supply circuit board 73 is also provided with a plurality of groups of corresponding positive and negative contact points. In this embodiment, as shown in fig. 7, the power supply circuit board 73 is provided with multiple groups of positive and negative contact points 731 corresponding to the contact pin groups 4, so that multiple groups of light-emitting keycap modules can use a single power supply circuit board 73 together. In addition, as shown in fig. 8, after the power is input into the power supply circuit board 73, different resistors are configured according to the current requirements of each group of positive and negative contact points 731, so as to achieve the current limiting effect.

In this solution, for convenience in manufacturing, the hook 5 and the sandwich plate 19 are integrally formed.

The scheme also provides a manufacturing method of the novel luminous key cap, which comprises the following steps:

A. The optical micro-structure layer 2 is conveniently attached to the light source circuit board, at the moment, an attaching layer 301 is formed between the optical micro-structure layer 2 and the light source circuit board, and then the assembled and injection-molded key cap is integrated with the key cap.

B. The light source circuit board 31 attached with the optical microstructure layer 2 is installed in the inner cavity of the key cap 1;

C. The sandwich plate 19 is molded in the inner cavity by a double-shot molding process, so that the light source circuit board 31 is positioned in the interlayer, a notch corresponding to the connection position of the anode and the cathode of the light source circuit board 31 is reserved on the sandwich plate 19, and the clamping hook 5 is formed on the lower side of the sandwich plate 19. The luminous component and the key cap are integrated, and the contact point position of the key light source circuit board needs to be avoided so as to supply power. Elastic conductors such as probes, POGOP I N, springs and the like are welded on the positive and negative electrode connection positions of the light source circuit board 31, every 2 bonding pads are in a group, each group of bonding pads can be connected with 1 resistor or a plurality of groups of bonding pads are connected with 1 resistor, and the resistor is used for limiting the current of the bonding pads.

The utility model also provides a keyboard, which comprises a keyboard body, wherein the novel luminous key cap is arranged on the keyboard body

The utility model provides a novel luminous key cap, which changes the structure of the traditional key cap, adds an interlayer for assembling a light source component and an optical microstructure layer in the inner cavity of the key cap, is equivalent to integrating the traditional backlight plate in a single key cap, gathers light emitted by a light source on the back of the key cap through the matching of an LED lamp and the optical microstructure layer, and ensures that the key cap has the light transmission and condensation effects, thereby being convenient for directly arranging a light source in the key cap, eliminating the structure of arranging the backlight plate under the key cap and being beneficial to reducing the whole thickness.

It should be understood that the terms "first," "second," and the like are used herein to describe various information, but such information should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, a "first" message may also be referred to as a "second" message, and similarly, a "second" message may also be referred to as a "first" message, without departing from the scope of the utility model. Furthermore, references to orientations or positional relationships of the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc. are based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

While the foregoing is directed to the preferred embodiments of the present utility model, it should be noted that modifications and variations could be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and variations are to be regarded as being within the scope of the utility model.

Claims (10)

1. The utility model provides a novel luminous key cap, its characterized in that, including key cap (1), light source subassembly (3) and optics micro-structure layer (2), the periphery of key cap (1) has downwardly extending border (12), border (12) enclose into inner chamber (102), still be equipped with intermediate layer (103) in inner chamber (102), light source subassembly (3) include light source circuit board (31) and locate LED lamp (32) on light source circuit board (31), optics micro-structure layer (2) are located between the back (110) of key cap (1) and light source circuit board (31) and around the periphery at LED lamp (32), breach (104) that run through to in intermediate layer (103) have still been seted up in inner chamber (102).

2. The novel luminous key cap according to claim 1, wherein the inner cavity (102) is further provided with a sandwich plate (19), the sandwich plate (19) and the back surface (110) of the key cap (1) are arranged at intervals to form the interlayer (103), and the notch (104) is arranged on the interlayer (103).

3. A new luminescent key cap according to claim 2, characterized in that the sandwich plate (19) is formed in the inner cavity (102) by two-shot injection molding.

4. A new luminous key cap as claimed in claim 3, characterized in that the sandwich plate (19) is of opaque material.

5. The novel luminous key cap according to claim 1, wherein the optical microstructure layer (2) is attached to the upper surface of the light source circuit board (31), and a through hole for the LED lamp (32) to penetrate is formed in the optical microstructure layer (2).

6. The novel luminous key cap according to claim 5, wherein the optical microstructure layer (2) comprises a base layer (201) and a plurality of protruding points which are arranged on the lower end face of the base layer (201) and are protruding downwards.

7. The novel luminous key cap according to claim 5, wherein the optical microstructure layer (2) comprises a base layer (201) and a plurality of concave points which are arranged on the lower end surface of the base layer (201) and are concave upwards.

8. A novel luminous key cap according to claim 3, characterized in that the underside of the sandwich plate (19) is also provided with a hook (5).

9. A new luminous key cap as claimed in claim 8, characterized in that the hooks (5) are integrally formed with the sandwich panel (19).

10. A keyboard, characterized in that the keyboard comprises a keyboard body, and the novel luminous key cap as claimed in any one of claims 1-9 is arranged on the keyboard body.