CN218730555U - Key and handheld device - Google Patents

Abstract

The utility model discloses a key, include: a silicone base; the stainless steel sheet is arranged in the silicon rubber base; the plastic sheet is arranged at the bottom of the silica gel base. The utility model discloses utilize the button to realize in button thickness H ₀ And when the height reaches 5-8 mm, the good key resilience reset is kept. The utility model also discloses a handheld device.

Description

Key and handheld device

Technical Field

The utility model relates to a handheld device technical field especially relates to a button and handheld device.

Background

In the existing traditional mature technology, the common structure of the keys of the handset comprises a plastic sheet and a silica gel-based two-layer structure, and the two-layer structure is combined and installed together through gluing. The structure can meet the design requirements of key parts of most handheld consumer products.

However, for a handheld product with a large size and a thick shell, if the handheld product still adopts a traditional form, the key feel of the product may be hard, and the user feels bad. Because when the casing is thick and heavy, the silica gel base part of button needs bigger size and height, and silica gel has certain compressibility, can seriously influence the button resilience performance when the size is too big, makes the button appear card key or soft phenomenon of collapsing, causes great influence to user experience. Traditional button structure is as shown in fig. 1, and when H size more than or equal to 5mm, according to the characteristic of silica gel base, the silica gel base is soft to collapse and is out of shape great, recovers slower or needs bigger power to press the button cap and just can produce touch function, causes not good use experience for the user.

Therefore, how to determine the key thickness H ₀ Under the condition of reaching 5 mm-8 mm, the good key springback reset is kept, which is a technical problem to be solved by technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a key with a thickness H ₀ Keeping good key springback reset under the condition of reaching 5-8 mm;

another object of the present invention is to provide a handheld device having the above-mentioned key.

In order to achieve the above object, the present invention provides the following technical solutions:

a key, comprising:

a silicone base;

the stainless steel sheet is arranged in the silicon rubber base;

the plastic sheet is arranged at the bottom of the silica gel base.

Alternatively, in the above-described key, the stainless steel sheet is embedded in the silicone base by an integral injection molding manufacturing process.

Alternatively, in the above-described key, the stainless steel sheet is integrally injection-molded to be embedded in the silicone base by a two-color injection molding manufacturing process.

Optionally, in the above-mentioned key, a key cap is further included, and the key cap is sleeved on the top of the silicone base.

Optionally, in the above key, a material of the key cap is engineering plastic.

Optionally, in the above key, the plastic piece is bonded to the silicone base by an adhesive.

Alternatively, in the above key, the stainless steel sheet has a thickness of 0.1mm or more.

Optionally, in the above key, the thickness of the plastic sheet is 0.1mm to 0.2mm.

Optionally, in the above-mentioned key, an elastic arm fixing hole is provided on the silica gel base, and the elastic arm fixing hole is sleeved on a fixing column of a housing of the handheld device to fix the silica gel base on the housing.

Alternatively, in the above-described key, the stainless steel sheet is of a brand of SUS301.

Optionally, in the above key, the plastic sheet is in contact with a circuit board contact on the housing.

The utility model provides a pair of key, including silica gel base, nonrust steel sheet and plastic piece. The stainless steel sheet is arranged in the silica gel base, the excellent resetting resilience of the stainless steel sheet is combined with the soft compression change of the silica gel base, and the defect of slow rebound of the silica gel base is greatly improved. The plastic piece arranged on the silica gel base part can avoid the soft contact of the silica gel base part and the circuit board contact piece, ensures good conduction, and simultaneously improves the defect of uneven contact force between the silica gel base part and the circuit board contact piece. Give the strength feedback of pressing the finger when can promote the circuit board contact with the plastic piece setting at the silica gel basal part and switch on, the user in time experiences the fingertip when guaranteeing button and circuit contact to switch on. The silicon base, the stainless steel sheet and the plastic sheet act simultaneously, and the thickness H of the key is equal to that of the key ₀ And when the height reaches 5-8 mm, the good key resilience reset is kept.

A handheld device comprising a key as claimed in any one of the above claims.

The utility model provides a handheld device owing to have above-mentioned button, consequently has all technological effects of above-mentioned button concurrently, and this paper is not being repeated here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a structural diagram of a conventional key disclosed in an embodiment of the present invention;

fig. 2 is a structural diagram of a key structure disclosed in the embodiment of the present invention;

wherein:

100 is a key cap; 200 is a silicone base; 201 is an elastic arm fixing hole; 300 is a stainless steel sheet; 400 is a plastic sheet; 500 are circuit board contacts.

Detailed Description

The core of the utility model is to provide a key to press the key thickness H ₀ And when the height reaches 5-8 mm, the good key resilience reset is kept.

Another core of the present invention is to provide a handheld device having the above-mentioned key.

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.

As shown in fig. 2, the embodiment of the present invention discloses a key, including: a silicon rubber base 200, a stainless steel sheet 300 disposed in the silicon rubber base 200, and a plastic sheet 400 disposed at the bottom of the silicon rubber base 200. The stainless steel sheet 300 is arranged in the silica gel base 200, and the excellent resetting resilience of the stainless steel sheet 300 is combined with the soft compression deformation of the silica gel base 200, so that the defect of slow rebound of the silica gel base 200 is greatly improved. The plastic sheet 400 arranged at the bottom of the silica gel base 200 can avoid the soft contact between the silica gel base 200 and the circuit board contact piece 500, ensure good conduction, and simultaneously improve the defect of uneven contact force between the silica gel base 200 and the circuit board contact piece 500. The plastic sheet 400 is arranged at the bottom of the silica gel base 200, so that the force feedback of pressing fingers when the circuit board contact piece 500 is conducted can be improved, and a user can be ensured to contact and conduct the keys and the circuit contactsAnd the finger tip can be sensed in time. The silicon base 200, the stainless steel sheet 300 and the plastic sheet 400 act simultaneously, and the thickness H of the key is equal to that of the key ₀ And when the height reaches 5-8 mm, the good key resilience reset is kept.

In an embodiment of the present invention, the stainless steel sheet 300 is embedded into the silicone base 200 by an integral injection molding process. The manufacturing process of integral injection molding can enable the stainless steel sheet 300 and the silicon rubber base 200 to be tightly combined, prevent fatigue from loosening and improve the reliability of products.

Further, the stainless steel sheet 300 and the silicon rubber base 200 are integrally embedded in an injection molding mode through a double-color injection molding manufacturing process, namely the stainless steel sheet 300 and the silicon rubber base 200 are injected into the same set of mold, so that the silicon rubber base 200 is combined with the excellent resetting resilience of the stainless steel sheet 300, and the defect that the silicon rubber base 200 is slow in rebound is greatly improved.

It should be noted that, in order to ensure excellent return resilience of the stainless steel sheet 300, the thickness of the stainless steel sheet 300 is set to 0.1mm or more, and 0.1mm may be used as the thinnest.

The grade of stainless steel can be selected from SUS301, the grade of SUS301 stainless steel contains higher carbon than other grades of stainless steel, and the hardness, yield strength and tensile strength of SUS301 are higher than those of other grades of stainless steel, so that the elasticity and abrasion resistance of SUS301 are better. In most use occasions, the SUS301 and other marks such as widely used SUS304 have high universality, and under the working environment of high-strength elasticity and friction, the SUS301 has great superiority and is very suitable for being applied to a key structure with certain requirement on fatigue life.

The silica gel base 200 is a key product made of silica gel, and the silica gel base 200 has the characteristics of excellent heat resistance, cold resistance, environmental resistance, electrical insulation, fatigue resistance and the like, is a high-activity adsorbing material, is insoluble in water and any solvent, is nontoxic and tasteless, has stable chemical properties, and does not react with any substance except strong alkali and hydrofluoric acid. The chemical components and physical structure of silica gel determine that the silica gel has the characteristics that a plurality of other similar materials are difficult to replace: high adsorption performance, good thermal stability, stable chemical property, higher mechanical strength and the like.

There are various ways to attach the keys to the housing, and in one embodiment of the present invention, the keys are attached to the housing by attaching the silicone base 200 to the housing of the handheld device. Set up elastic arm fixed orifices 201 on silica gel base 200, the relevant position on the casing is provided with the fixed column, overlaps elastic arm fixed orifices 201 on the fixed column and can realize fixing silica gel base 200 on the casing.

Plastic film 400 is for pasting in the stereoplasm thin slice of silica gel basilar part, and plastic film 400 contacts with circuit board contact 500 on the casing, gives the strength feedback of pressing the finger when can promoting circuit board contact 500 to switch on, ensures that the user in time experiences the fingertip when button and circuit contact switch on. Meanwhile, the existence of the plastic sheet 400 avoids the soft contact between the silica gel base 200 and the circuit board contact 500, ensures good conduction, and overcomes the defect of uneven contact force between the silica gel base 200 and the circuit board contact 500.

There are many ways to place the plastic sheet 400 at the bottom of the silica gel base 200, which can ensure that the plastic sheet 400 and the silica gel base 200 do not loosen. In an embodiment of the present invention, the plastic sheet 400 is adhered to the silicone base 200 by an adhesive. After the silicone base 200 is bonded to the plastic sheet 400, the adhesive force needs to be raised by baking at a constant temperature to ensure the product quality. It should be noted that, in order to ensure the effect of the plastic sheet 400 is obvious, the thickness of the plastic sheet 400 is generally 0.1mm to 0.2mm.

In order to facilitate the key operation, in an embodiment of the present invention, the key cap 100 may be sleeved on the top of the silica gel base 200.

Engineering plastics can be selected as the material for manufacturing the key cap 100, and the engineering plastics have good mechanical properties and can meet the requirements of diversified appearances, colors and molding. For example, a commonly used engineering plastic material PC, which is a high molecular polymer including carbonate groups in a molecular chain. Depending on the structure of the ester group, it can be divided into aliphatic, aromatic and aliphatic-aromatic types, wherein the low mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their use in engineering plastics, and currently only aromatic polycarbonates have been commercialized. Because of the excellent comprehensive performance of PC, namely polycarbonate, the PC is distinguished from various engineering plastics and becomes a universal engineering plastic with the most wide application.

The utility model also discloses a handheld device, this handheld device has used the button of above-mentioned each embodiment. Because the key has the beneficial effects, the handheld device with the key has corresponding effects, and the description is omitted here.

Will through practice the utility model discloses a button is applied to many money three proofings handheld device and trade intercom etc, and the application of this button has all gained good effect, can be at button thickness H ₀ And under the condition of reaching 5-8 mm, the good key springback reset is kept, and the terminal user can obtain good user experience.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising a component of ' 8230 ' \8230; ' does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (12)

1. A key, comprising:

a silicone base (200);

a stainless steel sheet (300), the stainless steel sheet (300) being disposed within the silicone base (200);

a plastic sheet (400), the plastic sheet (400) disposed at a bottom of the silicone base (200).

2. The key of claim 1, wherein said stainless steel sheet (300) is embedded in said silicone base (200) by an integral injection molding manufacturing process.

3. The key of claim 1, wherein said stainless steel sheet (300) is integrally injection molded embedded in said silicone base (200) by a two-shot injection molding process.

4. The key of claim 1, further comprising a key cap (100), said key cap (100) fitting over a top of said silicone base (200).

5. The key of claim 4, wherein the key cap (100) is made of engineering plastic.

6. The key of claim 1, wherein said plastic sheet (400) is bonded to said silicone base (200) by adhesive.

7. The key according to claim 1, wherein the thickness of said stainless steel sheet (300) is 0.1mm or more.

8. The key of claim 2, wherein the plastic sheet (400) has a thickness of 0.1mm to 0.2mm.

9. The key of claim 1, wherein the silicone base (200) is provided with a resilient arm fixing hole (201), and the resilient arm fixing hole (201) is used for fixing the silicone base (200) on a housing of a handheld device by being sleeved on a fixing column of the housing.

10. The key of claim 1, wherein said stainless steel sheet (300) is of a grade of SUS301.

11. The key of claim 9, wherein said plastic sheet (400) contacts circuit board contact pads (500) on said housing.

12. A handheld device comprising a key as claimed in any one of claims 1 to 11.

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