Small key core with paint-spraying-free double-color key cap

Abstract

The invention discloses a small key core with a paint-spraying-free double-color key cap, which comprises a bottom plate, a conductive film, a scissor foot and a key cap, the scissor foot and the conductive film are fixed on the bottom plate, the key cap covers the scissor foot, the length A1 of the small key core is 230-268mm, and the thickness A2 of the small key core is 2.0-5.0 mm; the key cap comprises a first color part and a second color part, the first color part comprises a top plate and a limiting wall extending downwards along the periphery of the top plate, a cavity is formed between the top plate and the limiting wall, the second color part is attached to the bottom face of the cavity, and characters are arranged on the upper surface of the second color part. Characters of the second color part can be seen through the top plate; through the first color part and the second color part, the characters are arranged on the upper surface of the second color part, the characters of the second color part can be seen through the top plate, only the first color part is rubbed during use, the characters on the second color part can be prevented from being abraded, the service life is prolonged, the attractiveness is improved, and the problems that the service life is short and the attractiveness is poor are solved.

Description

Technical Field

[0001] This invention relates to the field of keyboard technology, and more specifically to a small key core with paint-free double-shot keycaps. Background Technology

[0002] Currently, traditional computer keyboards sold on the market can be divided into full-size keyboards and numeric keyboards due to their different sizes. Full-size keyboards are generally used as external numeric keyboards for desktop computers, while numeric keyboards are generally used as external numeric keyboards for laptops or tablets. The numeric keypad is the core functional module of the numeric keyboard. The numeric keypad generally includes a base plate, conductive film, scissor-switch feet, and keycaps. The scissor-switch feet and conductive film are fixed to the base plate, and the keycaps cover the scissor-switch feet.

[0003] Existing keycaps with small key cores are based on monochrome injection molding, and then marked with opaque characters. After long-term use, the printed characters and symbols on the keycaps are easily worn away by scratches from fingernails or erosion from sweat and other substances, resulting in unclear characters, affecting usability and poor aesthetics. In addition, the keycaps have a single color and poor appearance. They also have the problems of short service life and poor aesthetics. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a small key core with paint-free double-shot keycaps. The keycaps of the small key core include a first color portion and a second color portion. Characters are provided on the surface of the second color portion facing the first color portion. The characters on the second color portion can be seen through the top plate. The characters on the second color portion are isolated by the first color portion. When the user operates, they can only rub the surface of the first color portion and will not come into contact with the characters on the isolated surface of the second color portion, which can avoid character wear, extend service life, and improve aesthetics.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A small key core with paint-free double-shot keycaps includes a base plate, a conductive film, scissor-switch leads, and keycaps. The scissor-switch leads and the conductive film are fixed to the base plate, and the keycaps are fitted onto the scissor-switch leads. The length A1 of the small key core is 230-268mm, and the thickness A2 of the small key core is 2.0-5.0mm. The keycaps include a first-color portion and a second-color portion. The first-color portion includes a top plate and a limiting wall extending downward along the periphery of the top plate, forming a cavity between the top plate and the limiting wall. The second-color portion is attached to the bottom surface of the cavity, and characters are provided on the upper surface of the second-color portion, which can be seen through the top plate. By using the first-color portion and the second-color portion, and with the characters on the upper surface of the second-color portion visible through the top plate, only the first-color portion is rubbed during use, avoiding wear on the characters on the second-color portion, improving service life and aesthetics, and solving the problems of low service life and poor aesthetics.

[0006] As a preferred embodiment, the second colored portion covers the entire bottom surface of the cavity.

[0007] As a preferred embodiment, the second colored portion covers the bottom surface of the concave cavity.

[0008] As a preferred embodiment, the overall thickness A3 of the keycap is 0.8-2.5 mm.

[0009] As a preferred embodiment, the maximum thickness A4 of the second colored portion is 0.3-1.0 mm, and the maximum thickness A5 of the top plate is 0.5-1.5 mm.

[0010] As a preferred embodiment, the optical bands of the first color portion and the second color portion are different.

[0011] As a preferred embodiment, the limiting wall extends downward to the bottom of the second colored portion, and the limiting wall surrounds the outer perimeter of the scissor foot.

[0012] As a preferred embodiment, the second colored portion is integrally molded and attached to the bottom surface of the cavity.

[0013] As a preferred embodiment, the bottom of the limiting wall is provided with an outwardly extending anti-pickup lug.

[0014] As a preferred embodiment, the anti-pickup lug is located at the corner where two adjacent limiting walls meet.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it consists of a first color part and a second color part. The upper surface of the second color part is provided with characters, which can be seen through the top plate. The characters on the second color part are isolated by the first color part. When the user operates, he / she can only rub the surface of the first color part and will not come into contact with the characters on the upper surface of the isolated second color part. This can avoid wear on the characters, improve the aesthetics, increase the service life, and thus improve market competitiveness.

[0016] To more clearly illustrate the structural features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly structure of the first embodiment of the present invention; Figure 2 This is a partial structural cross-sectional view of the first embodiment of the present invention; Figure 3 This is a schematic diagram of the keycap structure according to the first embodiment of the present invention; Figure 4 This is a cross-sectional view of the keycap according to the first embodiment of the present invention; Figure 5 This is an exploded view of the keycap structure according to the first embodiment of the present invention; Figure 6 This is a partial structural cross-sectional view of the second embodiment of the present invention.

[0018] Explanation of reference numerals in the attached diagram: 10. Base plate; 20. Conductive film; 30. Scissor kick; 40. Keycap; 41. First color portion; 42. Second color portion; 43. Top plate; 44. Limiting wall; 45. Cavity; 46. Character; 47. Bottom surface of cavity; 48. Curved surface; 49. Anti-pickup lug. Detailed Implementation

[0019] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] First embodiment: like Figure 1-5As shown, this invention discloses a small key core with a paint-free double-color keycap, comprising a base plate 10, a conductive film 20, scissor arms 30, and keycaps 40. The scissor arms 30 and the conductive film 20 are fixed on the base plate 10, and the keycaps 40 cover the scissor arms 30. The length A1 of the small key core is 230-268 mm, and the thickness A2 of the small key core is 2.0-5.0 mm. The keycaps 40 include a first color portion 41 and a second color portion 42. The first color portion 41 includes a top plate 43 and a limiting wall 44 extending downward along the periphery of the top plate 43. The maximum thickness A5 of the top plate 43 is 0.5-1.5 mm, preferably 1 mm. The top plate 43 is transparent. A cavity 45 is formed between the top plate 43 and the limiting wall 44, and the second color portion 42 is attached to the bottom surface 47 of the cavity. The second color portion 42 covers the entire bottom of the cavity. Surface 47; the overall thickness A3 of the keycap 40 is 0.8-2.5mm; preferably 2mm; the maximum thickness A4 of the second color portion 42 is 0.3-1.0mm; preferably 0.5mm; the upper surface of the second color portion 42 is provided with characters 46, which can be seen through the top plate 43; the characters 46 can be one or a combination of numbers, letters and symbols; the number of keycaps 40 on the small key core is 78 or 79; through the first color portion 41 and the second color portion 42, the upper surface of the second color portion 42 is provided with characters 46, which can be seen through the top plate 43, so that only the first color portion 41 is rubbed during use, which can avoid wear on the characters 46 on the second color portion 42, improve service life and aesthetics, and solve the problems of low service life and poor aesthetics.

[0022] The first color portion 41 and the second color portion 42 have different optical bands; through the above design, laser engraving can be carried out through the first color portion 41 and the second color portion 42, which is convenient for production.

[0023] Laser engraving refers to the process of using the light energy of a laser beam to cause chemical and physical changes in the surface material, thus creating marks or burning away some material to reveal the desired graphics or text. During laser engraving, the top plate 43 is resistant to laser engraving and will not be penetrated by the laser. The laser will not engrave the top plate 43, leaving it intact. By adjusting the power of the laser beam, the second-color portion 42 can be vaporized or carbonized, and text, symbols, or patterns are engraved onto it. The laser wavelength is greater than the optical wavelength of the top plate 43 (1064 nm for infrared laser, 355 nm for ultraviolet laser), allowing it to penetrate the top plate 43 without reflection or refraction, thus avoiding instantaneous high temperatures. The optical wavelength of this second color portion 42 is distributed between 200NM and 250NM. When the laser cannot pass through the second color portion 42, it generates high temperature and breaks through instantly, thereby engraving text, symbols or patterns on it. The second color portion 42 can be burned through or engraved only on the surface of the second color portion 42.

[0024] It should be understood that the top plate 43 can also be a semi-transparent part, as long as the laser does not cause engraving on the top plate 43.

[0025] This should be understood as meaning that, in order to improve aesthetics, the first color part 41 can also be set to be completely transparent or semi-transparent.

[0026] The limiting wall 44 extends downward to the bottom of the second color portion 42, and the limiting wall 44 surrounds the outside of the scissor feet. With the above setting, when the small key core is installed into the small keyboard, the limiting wall 44 can limit the scissor feet 30, prevent the scissor feet 30 from falling out, and make the scissor feet 30 and the keycap 40 stably connected, thereby improving the product's service life.

[0027] The second colored portion 42 is integrally formed and attached to the bottom surface 47 of the cavity; the above design facilitates production.

[0028] It should be understood that the second colored portion 42 can also be attached to the bottom surface 47 of the cavity by means of adhesive, ultrasonic bonding, etc.

[0029] The bottom of the limiting wall 44 is provided with an anti-pick-out lug 49 extending outward; the anti-pick-out lug 49 is located at the corner where two adjacent limiting walls 44 meet; by providing the anti-pick-out lug 49, when the small key core is installed into the small keyboard, the anti-pick-out lug 49 can be locked onto the small keyboard, which can prevent the keycap 40 from falling out or being pried out of the keyboard.

[0030] The top surface of the top plate 43 is recessed with an arc-shaped surface 48. By setting the arc-shaped surface 48, the force on the keycap 40 is more even when the hand presses it, avoiding damage to the keycap 40 due to uneven force, improving the service life, and making the user's feel more comfortable.

[0031] Second embodiment: like Figure 6 As shown, the difference between this embodiment and the first embodiment is that the second colored portion 42 covers the bottom surface 47 of the concave cavity. With the above arrangement, the material used for the second colored portion 42 can be reduced, the cost can be reduced, and the product can be more recognizable and the brand effect can be improved.

[0032] The present invention uses a first color portion 41 and a second color portion 42. The upper surface of the second color portion 42 is provided with characters 46, which can be seen through the top plate 43. The characters 46 on the second color portion 42 are isolated by the first color portion 41. When the user operates, he / she can only rub the surface of the first color portion 41 and will not come into contact with the characters 46 on the upper surface of the isolated second color portion 42. This can avoid wear and tear on the characters 46, improve the aesthetics, increase the service life, and thus improve market competitiveness.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the actual technology of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A small key core with paint-free double-shot keycaps, comprising a base plate, a conductive film, scissor-switch leads, and keycaps, wherein the scissor-switch leads and the conductive film are fixed to the base plate, and the keycaps are fitted onto the scissor-switch leads, characterized in that: The length A1 of the small key core is 230-268mm, and the thickness A2 of the small key core is 2.0-5.0mm; The keycap includes a first color portion and a second color portion. The first color portion includes a top plate and a limiting wall extending downward along the periphery of the top plate. A cavity is formed between the top plate and the limiting wall. The second color portion is attached to the bottom surface of the cavity. Characters are provided on the upper surface of the second color portion, and the characters of the second color portion can be seen through the top plate.

2. The keymat with paint-free double color keycaps according to claim 1, wherein, The second colored portion covers the entire bottom surface of the concave cavity.

3. The keymat with paint-free double color keycaps according to claim 1, wherein, The second colored portion covers part of the bottom surface of the concave cavity.

4. The keymat with paint-free double color keycaps according to claim 1, wherein, The overall thickness A3 of the keycap is 0.8-2.5mm.

5. The keymat with paint-free bi-color keycap of claim 1, wherein, The maximum thickness A4 of the second colored portion is 0.3-1.0 mm, and the maximum thickness A5 of the top plate is 0.5-1.5 mm.

6. A small key core with paint-free double-shot keycaps according to claim 1, characterized in that, The first color portion and the second color portion have different optical wavelengths.

7. A small key core with paint-free double-shot keycaps according to claim 1, characterized in that, The limiting wall extends downward to the bottom of the second colored portion, and the limiting wall surrounds the outer perimeter of the scissor foot.

8. A small key core with paint-free double-shot keycaps according to claim 1, characterized in that, The second colored portion is integrally molded and attached to the bottom surface of the cavity.

9. The environmentally friendly two-color keycap without inkjet printing according to claim 1, characterized in that, The bottom of the limiting wall is provided with an anti-pickup protrusion extending outward.

10. A small key core with paint-free double-shot keycaps according to claim 9, characterized in that, The anti-scratch lug is located at the corner where two adjacent limiting walls meet.

Images