CN102543535A - Key device for mobile communication terminal and mobile communication terminal - Google Patents

Abstract

The present invention provides a key device for a mobile communication terminal and a mobile communication terminal, which are used to solve the problem that the key device of the mobile communication terminal in the prior art needs to be additionally designed with a sound sealing component, which causes difficulty in assembly and high cost. The key device includes: a first key body and a second key body, and also includes: a microphone opening, which is arranged between the first key body and the second key body, and is used to convert a sound signal into an electrical signal; a sound sealing ring, whose left half is integrally connected to the first key body, and whose right half is integrally connected to the second key body, and is used to seal the microphone opening. The technical solution of the present invention has good sound sealing effect and low cost.

Description

A key device for mobile communication terminal and mobile communication terminal

technical field

The invention relates to the communication field, in particular to a key device for a mobile communication terminal and the mobile communication terminal.

Background technique

At present, more and more mobile communication terminals are provided with microphone openings in the middle of the buttons. Since the microphone openings need to be sealed, the sound sealing effect of the microphone openings of the existing mobile communication terminals is poor and cannot be achieved. Very good sound guide effect.

Fig. 1 is the key device of the mobile communication terminal that adopts foam to carry out sound sealing in the prior art, as shown in Fig. , sealing, cushioning, noise reduction, filtering and other functions, so foam as a sound sealing material has the characteristics of good sound sealing and waterproof effects. However, practice has proved that the use of foam for sealing requires the design of additional components, which brings certain difficulties to the assembly of the button device, and also increases the cost, resulting in low cost performance.

In the prior art, the button device of the mobile communication terminal requires an additional sound-sealing component design, resulting in difficult assembly and high cost. For these problems, no effective solution has been proposed so far.

Contents of the invention

The main purpose of the present invention is to provide a key device for mobile communication terminals and the mobile communication terminal, so as to solve the problem that the key device of the mobile communication terminal in the prior art needs to add additional sound-sealing components, resulting in difficult assembly and high cost. question.

In order to achieve the above object, according to one aspect of the present invention, a key device for a mobile communication terminal is provided.

The button device for mobile communication terminal of the present invention includes: a first button body and a second button body, and also includes: a microphone opening, arranged between the first button body and the second button body, for converting sound signals The electrical signal is generated; the voice sealing coil, the left half of which is integrally connected with the first key body, and the right half is integrally connected with the second key body, and is used to seal the opening of the microphone.

Further, the first button body and the second button body sequentially include from top to bottom: a keycap; a silicone button layer, matched with the keycap; a membrane switch, connected with the silicone button layer; the left half of the voice seal ring The upper end and the upper end of the right half are respectively in close contact with the back of the keycap of the first key body and the back of the keycap of the second key body, and the lower end of the left half and the lower end of the right half of the voice sealing ring are respectively in contact with the back of the keycap of the second key body. The membrane switch of the first key body and the membrane switch of the second key body are in interference fit.

Further, the silicone button layer includes from top to bottom: a silicone base bracket; a connecting groove, which is arranged between the silicone base bracket and the membrane switch, and communicates with the lower part of the voice sealing ring, and the connecting groove is filled with silicone.

Further, the voice sealing ring is a silicone voice sealing ring, and both sides of the lower part of the silicone voice sealing ring are integrally connected with the silicone key layer of the first key body and the silicone key layer of the second key body respectively.

According to another aspect of the present invention, a mobile communication terminal is provided, and the mobile communication terminal includes the key device for the mobile communication terminal of the present invention.

According to the technical solution of the present invention, by setting the sound sealing ring integrally connected with the first button body and the second button body, while ensuring the sound guiding effect, no additional design of sound sealing parts is required, the assembly is simple, the performance is reliable, low cost.

Description of drawings

The accompanying drawings in the description are used to provide a further understanding of the present invention and constitute a part of the present application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a key device of a mobile communication terminal using foam for sound sealing in the prior art.

FIG. 2 is a schematic structural diagram of a key device for a mobile communication terminal according to the present invention.

FIG. 3 is a cross-sectional view of the key device in FIG. 2 .

The reference signs represent the following structures respectively:

11. Microphone opening;

12. Foam;

31. The first button body;

32. The second button body;

33. Voice sealing circle;

321, keycap;

322. Silicone base bracket;

323, connection slot;

324. Membrane switch.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

A key device for a mobile communication terminal and the mobile communication terminal of the present invention are preferably a mobile phone. The "front" and "back" of the present invention are relative to the screen of the mobile terminal, the front of the screen displaying the picture is called the front, and the rear of the screen is called the back.

FIG. 2 is a schematic structural view of a key device for a mobile communication terminal according to the present invention, and FIG. 3 is a cross-sectional view of the key device in FIG. 2 . Wherein, Fig. 2 shows that the middle of the button device of the mobile phone is provided with a microphone opening 11, Fig. 3 shows the main structure of the button device for mobile communication terminal of the present invention, in Fig. 3, the present invention is used for The key device of the mobile communication terminal mainly includes:

The first key body 31 and the second key body 32 .

The button device for the mobile communication terminal of the present invention also includes:

The microphone opening 11 is disposed between the first key body 31 and the second key body 32 for converting sound signals into electrical signals.

The voice sealing ring 33 is made of silica gel, the left half of which is integrally connected with the first key body 31 , and the right half is integrally connected with the second key body 32 , and the voice sealing ring 33 is mainly used for sealing the opening 11 of the microphone. Since the voice sealing ring 33 is integrally connected with the key bodies located on both sides, while ensuring the sound guiding effect, no additional design of sound sealing parts is required, the assembly is simple, and the cost is low. The voice sealing ring 33 is also waterproof and The dustproof effect ensures the reliability of the performance of the key device for mobile communication terminals of the present invention.

In this embodiment, the first key body 31 and the second key body 32 have the same structure, and the second key body 32 is taken as an example to describe in detail.

As shown in FIG. 3 , the second button body 32 includes: a keycap 321 , a silicone base bracket 322 , a connection groove 323 and a membrane switch 324 from top to bottom. Among them, the silicone base bracket 322, the connecting groove 323 and several silicone button contacts (not shown in the figure) form the silicone button layer of the button device. The right half of the voice sealing ring 33 of the material is integrally formed.

In this embodiment, the connection groove 323 is arranged between the silicone base bracket 322 and the membrane switch 324. The connection groove 323 is a gap opened by the silicone base bracket 322 and communicates with the lower part of the right half of the voice sealing ring 33. When making the silicone button layer, the flowable characteristic of silicone is used to make the silicone of the silicone button contact flow through the connection groove 323 and form together with the silicone on the right half of the voice sealing ring 33 . This structure further improves the sound sealing effect, greatly saves the design cost of the sound sealing device, and makes assembly easier.

As shown in Figure 3, the upper end of the left half of the voice sealing ring 33 is in close contact with the back of the key cap of the first key body 31, and the upper end of the right half is closely attached to the back of the key cap 321 of the second key body 32. paste; the lower end A of the left half of the voice sealing ring 33 is in interference fit with the membrane switch of the first key body 31, and the lower end B of the right half is in interference fit with the membrane switch 324 of the second key body 32. The sound sealing ring 33 and the membrane switch of the key body adopt an interference fit structure, which enhances the sealing effect of the key device, thereby ensuring the sound guiding effect of the key device.

In this embodiment, the key device for mobile communication terminals of the present invention is provided with a voice sealing ring 33 integrally connected with the first key body 31 and the second key body 32, without additional design of sound sealing parts, and the assembly is simple and convenient. The cost is low, and an interference fit structure is adopted between the voice sealing ring 33 and the membrane switches of the two key bodies, which enhances the sealing effect of the key device, thereby ensuring the sound guiding effect of the key device.

The mobile communication terminal of the embodiment of the present invention includes the key device for the mobile communication terminal of the embodiment of the present invention, so this mobile communication terminal can be provided with a voice seal 33 integrally connected with the first key body 31 and the second key body 32 , while ensuring the sound guiding effect, there is no need to add additional sound sealing parts, the assembly is simple, the performance is reliable, and the cost is low.

As can be seen from the above description, the button device for mobile communication terminals and the mobile communication terminal of the present invention are equipped with a silicone sound sealing ring integrally formed with the button body, without additional design of sound sealing parts, easy to assemble, low in cost, and at the same time An interference fit structure is adopted between the voice coil and the membrane switches of the two key bodies, which enhances the sealing effect of the key device, thereby ensuring the sound guiding effect of the key device.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A button device for a mobile communication terminal, comprising a first button body and a second button body, characterized in that it also includes: The microphone opening is arranged between the first key body and the second key body, and is used to convert the sound signal into an electrical signal; The voice sealing ring, the left half of which is integrally connected with the first button body, and the right half of which is integrally connected with the second button body, are used to seal the opening of the microphone. 2. The button device according to claim 1, characterized in that, the first button body and the second button body sequentially comprise from top to bottom: keycap; Silicone button layer, matched with the keycap; a membrane switch, connected to the silicone button layer; The upper end of the left half and the upper end of the right half of the sound sealing ring are respectively in close contact with the back of the key cap of the first key body and the back of the key cap of the second key body, and the sound seal The lower end of the left half and the lower end of the right half of the ring are respectively in interference fit with the membrane switch of the first key body and the membrane switch of the second key body. 3. The button device according to claim 2, wherein the silicone button layer sequentially comprises from top to bottom: Silicone base bracket; The connection groove is arranged between the silicone base bracket and the membrane switch, and communicates with the lower part of the voice sealing ring, and the connection groove is filled with silica gel. 4. The button device according to claim 2 or 3, wherein the voice sealing ring is a silicone voice sealing ring, and the two sides of the lower part of the silicone voice sealing ring are respectively connected to the silicone key of the first button body. The layer is integrally connected with the silicone key layer of the second key body. 5. A mobile communication terminal, characterized by comprising the button device according to any one of claims 1-4.

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