CN213716770U - Key cap - Google Patents

Abstract

The utility model discloses a key cap, including the key cap basic shell that has the opening chamber, the opening in opening chamber sets up down, key cap basic shell top surface be equipped with the cavity, the cavity in be equipped with the encapsulating technology and form the flexible and light-admitting quality of pressing down the elastomer, the material that presses down the elastomer and adopt is silica gel glue or polyurethane PU glue or epoxy AB glue. The effectual comfort level that has improved of elastomer is pressed for the buffering shock attenuation of typing goes up and down, solves the feeling of traditional key cap bang of bang.

Description

Key cap

Technical Field

The utility model relates to a keyboard accessory technical field indicates a key cap especially.

Background

A keyboard is a command and data entry device used to operate equipment and also refers to a set of function keys arranged to operate a machine or equipment through the system. The keyboard is the most common and main input device, and english letters, numbers, punctuations and the like can be input into the computer through the keyboard, so as to send commands, input data and the like to the computer. The key cap is an important component of the keyboard, and is now the focus of design of the masses.

The applicant has been dedicated to research and development of key caps, and how to change the single appearance of the key caps, the applicant has previously conceived that the appearance of the key caps is changed from the traditional single color and single texture by adopting a double-layer structure (for example, a key cap with a double-layer structure in publication CN 210052666U), an additional crystal face cover (for example, a crystal face cover in publication CN206976220U a keyboard), an additional decorative cover (for example, a key with a decorative cover in publication CN 207587591U) and the like, but the feel of the key caps cannot change the feel of hard bang, and the applicant feels that the previous methods have brought great changes in appearance but the degree of freedom of individualization is too small.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a keycap.

In order to achieve the above object, the present invention provides a key cap, including a key cap base shell with an opening cavity, the opening of the opening cavity is arranged downwards, the top surface of the key cap base shell is provided with a cavity, and the cavity is internally provided with a pressing elastomer which is flexible and light-transmitting and is formed by a glue filling process.

Preferably, the pressing elastomer top surface is outwardly flush with the cavity.

Preferably, the pressing elastic body is made of silica gel glue, Polyurethane (PU) glue or epoxy resin (AB) glue.

Preferably, the silica gel glue comprises a component A and a component B, wherein the volume ratio of the component A to the component B is 1:1, the component A comprises 100 parts of basic glue and 2-2.8 parts of hydroxyl polysiloxane, and the component B comprises 100 parts of basic glue, 0.02-0.2 part of mica slurry, 0.02-0.2 part of catalyst and 0.02-0.2 part of polymerization inhibitor;

the preparation method of the component A comprises the following steps: drying the base rubber at 120-150 ℃ for 2-4 hours, cooling to room temperature, adding hydroxyl polysiloxane, stirring for 10-20 minutes in a high-speed dispersion machine at 400-800 rpm, uniformly mixing, and stirring in vacuum for 1-2 hours to discharge air bubbles to obtain a silica gel component A;

the preparation method of the component B comprises the following steps: drying the base rubber at 120-150 ℃ for 2-4 hours, cooling to room temperature, adding mica slurry, a catalyst and a polymerization inhibitor, stirring for 10-20 minutes in a high-speed dispersion machine at 400-800 rpm, uniformly mixing, and stirring in vacuum for 1-2 hours to discharge air bubbles to obtain the silica gel component B.

Preferably, the keycap base shell is provided with characters in the cavity of the open cavity in an ejecting mode.

Preferably, the characters are character bumps.

Preferably, the key cap base shell is made of hard plastic. The key cap base shell is formed by single material or double material injection molding.

Preferably, the keycap base shell is made of any one of thermoplastic polyurethane elastomer rubber, polycarbonate, polypropylene, acrylonitrile-butadiene-styrene copolymer or aluminum alloy through an injection molding process.

Preferably, the top surface of the pressing elastic body is along the outer side wall of the key cap base shell and extends downwards to form a soft rubber skirt sleeve, and the outer side wall of the key cap base shell is sleeved with the soft rubber skirt sleeve.

A computer keyboard comprises a keyboard body and a plurality of keycaps movably arranged on the upper surface of the keyboard body.

(III) advantageous effects

The utility model provides a keycap. The method has the following beneficial effects: adopt the pressing elastomer that the encapsulating technology formed in the cavity of key cap, the material that presses the elastomer and adopt is silica gel glue or polyurethane PU glue or epoxy AB glue, presses the elastomer and forms the press surface with the finger contact, for the user provides soft feeling, changes the sensation of traditional hard nation, presses the elastomer simultaneously and forms through the encapsulating, can merge into various embellishments in glue to form changeable outward appearance, individualized degree of freedom is higher. The applicant has also designed the key cap top surface have the flexible glue structure, for example add quartzy face lid, only than key cap base shell is soft, and the utility model discloses a press the elastomer, just like QQ sugary soft, and the degree of freedom undersize that current flexible glue structure can individualize, the utility model discloses but individualize degree of freedom is great.

Secondly the utility model discloses also can be through the elastomer of pressing down that cup joints in key cap basic shell outside, the effectual comfort level that has improved, it is wear-resisting to antiskid, through the silica gel location knot pressing the inboard fixed connection in elastomer bottom, the installation is directly cup jointed to the convenience, the fastening is reliable, prevent that the long problem that leads to droing of live time, make the buffering shock attenuation of typing lift, the noise is little, stability factor is high, through the silica gel drain pan of filling at the inboard top of key cap basic shell and the key core of inboard middle fixed, make simple to operate, structural strength is high.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fifth embodiment of the present invention;

FIG. 3 is a schematic view of the key cap structure of the present invention;

fig. 4 is a schematic bottom structure diagram of the present invention.

In the figure, the key cap comprises a key cap base shell 1, a cavity 11, a pressing elastic body 2, a silica gel positioning buckle 3, a concave end face 4, a transparent hole 5, a key core 6, a silica gel bottom shell 7, a connecting rib 8 and a cross positioning mounting hole 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1, an embodiment of the present invention provides a technical solution: a key cap comprises a key cap base shell 1 with an opening cavity, wherein the opening of the opening cavity is arranged downwards, the key cap base shell 1 is provided with characters at the cavity top of the opening cavity, the top surface of the key cap base shell 1 is provided with a cavity 11, namely the bottom surface of the cavity 11 is provided with the characters, the key cap base shell 1 is similar to the key cap structure of the traditional luminous character or non-luminous character, the characters are protruded relative to the bottom surface of the cavity 11 and can be flush with the bottom surface of the cavity 11, the protruded height of the characters is slightly equal to the depth of the cavity 11, when a pressing elastic body is formed, the characters are flush with the surface of the pressing elastic body, when the characters are in a luminous state, a light column effect is formed, meanwhile, when the pressing elastic body is transparent or a beautiful pattern is formed in the pressing elastic body, light rays enable the pressing elastic body to be more gorgeous, the manufacturing process is similar, namely the cavity 11, the hard plastic is made of any one of thermoplastic polyurethane elastomer rubber, polycarbonate, polypropylene or acrylonitrile-butadiene-styrene copolymer by an injection molding process. Keycap base shell 1 is formed for single material or extra quality injection moulding, cavity 11 in be equipped with the encapsulating technology and form the pressing elastomer of flexibility and light transmissivity, press the elastomer top surface with the cavity is extensive parallel and level, the material that the pressing elastomer adopted is silica gel glue.

The silica gel glue comprises a component A and a component B, wherein the volume ratio of the component A to the component B is 1:1, the component A comprises 100 parts of basic glue and 2-2.8 parts of hydroxyl polysiloxane, the component B comprises 100 parts of basic glue, 0.02-0.2 part of mica slurry, 0.02-0.2 part of catalyst and 0.02-0.2 part of polymerization inhibitor, and the basic glue is vinyl polysiloxane;

the preparation method of the component A comprises the following steps: drying vinyl polysiloxane at 120-150 ℃ for 2-4 hours, cooling to room temperature, adding hydroxyl polysiloxane, stirring for 10-20 minutes in a high-speed dispersion machine at 400-800 rpm, uniformly mixing, and stirring in vacuum for 1-2 hours to discharge air bubbles to obtain a silica gel A component;

the preparation method of the component B comprises the following steps: drying vinyl polysiloxane at 120-150 ℃ for 2-4 hours, cooling to room temperature, adding mica slurry, a catalyst and a polymerization inhibitor, stirring for 10-20 minutes in a high-speed dispersion machine at 400-800 rpm, uniformly mixing, and stirring in vacuum for 1-2 hours to discharge air bubbles to obtain the silica gel component B.

The catalyst adopts platinum catalyst, silica gel can not be cured if the catalyst is lacking, and the curing is incomplete if the catalyst is less. The platinum-containing silica gel is generally used for the components of addition type silica gel, and the platinum water is diluted to be low concentration to prevent the silica gel surface from being not solidified.

Preparing mica slurry: adding 0.3 wt% of dialkyl dimethyl ammonium chloride and 0.5 wt% of polysiloxane quaternary ammonium salt into the muscovite powder with the particle size of 0.9 mu m, and then adding deionized water to prepare mica slurry with the concentration of 25 wt%.

The muscovite powder is a cool nonmetallic mineral powder, is transparent and colorless, and is a silicate with a layered structure, wherein a compound silicon-oxygen layer formed by a layer of aluminum-oxygen octahedron is sandwiched by two layers of silicon-oxygen tetrahedrons. The mica powder has the characteristics of good elasticity, toughness, insulativity, high temperature resistance, acid and alkali resistance, corrosion resistance, strong adhesive force, heat absorption and cooling and the like, and although the mica has excellent performances of heat absorption and cooling, ultraviolet resistance and the like, no one has applied the mica to manufacturing of the keycaps so far, so that the pressing surface of the keycaps has the functions of cooling and cooling, and the temperature can be reduced when the mica is in contact with skin compared with the traditional keycaps, and the feeling is comfortable and cool.

The embodiment adopts batch industrial production, and can also be used for personalized DIY operation, namely, the keycap base shell 1 with the top surface cavity 11 is provided for a consumer, the keycap base shell 1 serves as a mold, the component A and the component B are measured according to the volume ratio of 1:1, the components A and the component B are fully and uniformly mixed in a clean container, bubbles are removed, then the mixture is filled into the cavity 11 of the keycap base shell 1, and the mixture is cured into the pressing elastomer under the condition of normal temperature or temperature rise. The bubbles can be removed by heating or by using a poking needle, and decorations can also be added when the mixture is well mixed in a clean container.

The colloid is solidified into an elastomer from a liquid state, and the elastomer has certain adhesive force and lower shrinkage rate on the surface of the keycap base shell 1 by pressing so as to be tightly attached to the keycap base shell 1 to prevent falling off. The general adhesion of silica gel to the substrate can be very poor, the utility model discloses silica gel needs to have better adhesive force with the substrate after forming to can not break away from the substrate easily under external force, make the vinyl volume of being higher than hydrogen base in the A component, reduce hydroxyl polysiloxane's addition very much, can reduce the degree of crosslinking in the curing process, obtain the soft silica gel of low rigidity further reduces stress and shrinkage factor. After the product is cured, the unreacted vinyl groups can ensure that the surface of the cured silica gel has good adhesive force. However, if the residual vinyl group is too large, the rubber will have too few crosslinking points and will have substantially no mechanical strength, and therefore, the ratio of the methylvinylsiloxane rubber to the hydroxypolysiloxane will have a significant effect on the properties of the final product. The utility model discloses chooseed for use vinyl polysiloxane for basic glue, cross-linking agent for hydroxyl polysiloxane's addition type reaction system, no micro molecule generates in the curing process, has effectively reduced the shrinkage factor of silica gel. The utility model discloses increased the mica thick liquids, further reduced the shrinkage factor of pressing the elastomer.

After the pressing elastomer is cured, the Shore hardness is 5-20 HC (the Shore hardness generally refers to Shore hardness, and the Shore hardness refers to a test and expression method of material hardness), the shrinkage rate is less than 0.3%, and the self-adhesive performance is good. The elastic body is pressed to ensure that the keycap has good cooling effect, so that the keycap has cool feeling when being used in summer, is soft and fine when being used in winter, and has good comfort.

The utility model discloses an adopt stereoplasm plastic material as the base, adopt transparent silica gel material as the key cap press surface, the utility model discloses a silica gel forms presses the elastomer, can adhere well to the surface such as metal, glass, the plastic that need not special treatment to can keep lasting adhesion, and the texture is pliable and tough, still has the high moisture absorption of ice-cold, the effect of heat absorption cooling, ice-cold degree Q-max 0.133W/cm 2.

In addition, as the D IY manual work, the manual work ability and the creativity of consumers can be stimulated, the requirements of the user DIY are met to a certain extent, the use range is expanded, the user can produce various products according to the self idea DIY, the production process is enjoyed, the combination is convenient, the learning and understanding are easy, and professional guidance or tutorials are not needed; sponge-like materials or fragrant materials or temperature-sensitive color-changing materials or toner or flash powder, laser flash powder, colorful shell paper, color concentrate, dried flowers, colorful foil paper, jade imitation powder, crystal broken stone and the like can be put into the glue, the interestingness of combination and splicing is brought, the stereoscopic impression of finished products is increased, and users can experience the fun and achievement of making by themselves.

The silica gel glue adopts the components A and B, the volume ratio of the components A to the components B is 1:1, the heating is low in the forming process, and the pressed elastomer is high-temperature resistant, yellowing resistant, and free of glue shrinkage and slow in drying. After the mica slurry is added into the component B, decorations such as glittering powder are added into the glue, so that the self-defoaming effect is good, and the halation effect is good.

Of course, in order to prevent the pressing elastic body from being separated from the concave cavity, a clamping position can be arranged at the opening of the concave cavity, so that the pressing elastic body is fixed in the concave cavity.

Example two

The difference between the second embodiment and the first embodiment is that the top surface edge of the pressing elastic body is along the outer side wall of the key cap base shell 1 and extends downwards to form a soft rubber skirt sleeve, and the outer side wall of the key cap base shell 1 is sleeved with the soft rubber skirt sleeve. The second embodiment also can realize DIY operation, only need provide one set of key cap mould for the consumer, the similar key cap base casing of key cap mould 1 forms, slightly is bigger than key cap base casing 1, pours into the glue after mixing into the key cap mould, then puts into key cap mould key cap base casing 1 in, in order to avoid overflowing glue, can carve the scale mark in the key cap mould to this is the standard encapsulating, also can overflow and clear away unnecessary glue behind the glue.

EXAMPLE III

The difference between the third embodiment and the first embodiment is that the material adopted by the pressing elastic body is Polyurethane (PU) glue.

Example four

The difference between the fourth embodiment and the first embodiment is that the pressing elastic body is made of a material

Epoxy AB glue.

EXAMPLE five

Referring to fig. 2-4, a key cap includes a key cap base shell 1 and a pressing elastic body 2, the pressing elastic body 2 is sleeved outside the key cap base shell 1, a silica gel positioning buckle 3 is fixedly connected to the inner side of the bottom of the pressing elastic body 2, a concave end surface 4 is arranged at the top of the key cap base shell 1, a silica gel bottom shell 7 is filled at the top of the inner side of the key cap base shell 1, and a key core 6 is fixedly arranged in the middle of the inner side of the key cap base shell 1. The key core 6 is of a cylindrical structure, and the inner side end of the key core 6 is provided with the cross positioning mounting hole 9, so that the mounting and positioning are accurate, the stability is high, and the key core is convenient to dismount. The top surface of the key cap base shell 1 is formed by a silica gel dispensing mode, and connecting ribs 8 are fixedly distributed between the inner side end of the key cap base shell 1 and the key core 6, so that the structural strength is effectively improved, and the key cap base shell is durable. The transparent hole 5 is arranged at the front end of the top of the concave end face 4, the concave end face 4 is of an arc-shaped structure, characters can be efficiently displayed in a light-transmitting mode, and the arc-shaped structure is convenient to type directly. The key cap base shell 1 four sides rubber coating, the key cap adopts the processing mode of rubber coating all around to make the key cap use more softness, wear-resisting, durable.

The working principle is as follows: through the effectual comfort level that has improved of the pressing elastomer 2 that the key cap base shell 1 outside cup jointed, antiskid is wear-resisting, 3 direct cup joints the installation through pressing the inboard fixed connection's of elastomer 2 bottoms silica gel location knot, the fastening is reliable, prevent the problem that the live time long leads to droing, 3 direct when the keyboard body contact is detained in the silica gel location, make typing go up and down to cushion the shock attenuation, the noise has been reduced, the stability factor is high, silica gel drain pan 7 through 1 inboard top packing of key cap base shell and the installation of 6 direct location of inboard middle fixed key core, structural strength is high, long service life, the preparation technology of pressing elastomer 2 adopts corresponding key cap mould to irritate silica gel, thereby can form fast and press elastomer 2, cup joint the installation with it, can make full package structure, also can make single face structure.

The utility model discloses a key cap base shell 1, press elastomer 2, silica gel location knot 3, concave type terminal surface 4, transparent hole 5, key core 6, silica gel drain pan 7, splice bar 8, cross location mounting hole 9, the part is the parts that general standard component or the technical staff in this field know, its structure and principle all can be known or can be known through the conventional experimental method for this technical staff, the problem that the utility model solves is that the current keyboard key cap comfort level is not enough, slides easily when typing, inconvenient direct cup joint installation, the tightness is not enough, long service life leads to droing easily, the noise is big, the stability factor is low, the installation is inconvenient, the intensity is low, the utility model discloses through the intercombination of the above-mentioned parts, the comfort level is effectively improved, antiskid and wear-resisting, convenient direct cup joint installation, the fastening is reliable, prevent the problem that the long service life leads to droing, make typing lift buffering shock attenuation, stability factor is high for simple to operate, structural strength is high.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides a key cap, its characterized in that, is including the key cap base shell that has the opening chamber, the opening in opening chamber sets up down, key cap base shell top surface be equipped with the cavity, the cavity in be equipped with the encapsulating technology and form the flexible and light-admitting quality of pressing down the elastomer, the inboard fixedly connected with silica gel location of bottom of pressing the elastomer is detained.

2. A key cap according to claim 1, wherein: the pressing elastomer top surface is outwardly flush with the cavity.

3. A key cap according to claim 1, wherein: the material that the elastomer adopted of pressing is silica gel glue or polyurethane PU glue or epoxy AB glue.

4. A key cap according to claim 1, wherein: the key cap base shell is provided with characters in the cavity top of the opening cavity.

5. A key cap according to claim 4, wherein: the characters are character bumps.

6. A key cap according to claim 1, wherein: the key cap base shell is made of hard plastic, and is formed by single material injection molding or double material injection molding.

7. A key cap according to claim 1, wherein: the keycap base shell is made of any one of thermoplastic polyurethane elastomer rubber, polycarbonate, polypropylene, acrylonitrile-butadiene-styrene copolymer or aluminum alloy through an injection molding process.

8. A key cap according to claim 1, wherein: the pressing elastomer top surface edge is along the outer side wall of the key cap base shell and extends downwards to form a soft rubber skirt sleeve, and the soft rubber skirt sleeve is sleeved on the outer side wall of the key cap base shell.

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