CN203352791U - Terminal and terminal housing - Google Patents

Abstract

The utility model discloses a terminal and a terminal shell, comprising: a terminal shell, the terminal shell includes a structural shell and a piezoelectric speaker, and the piezoelectric speaker is embedded in the shell wall of the structural shell. The utility model utilizes the ultra-thin characteristics of the piezoelectric ceramic sheet to design the piezoelectric speaker and the structural shell of the terminal as a whole, without the requirement of a structural sound chamber, which not only effectively solves the demand for ultra-thin design of the terminal product, but also effectively To ensure the audio quality.

Description

Terminal and terminal housing

technical field

The utility model relates to the technical field of terminal equipment, in particular to a terminal and a terminal casing.

Background technique

At present, in the terminal market, intelligent terminal products have become the mainstream, and thin design has become one of the selling points of intelligent terminal products. The world's mainstream terminal manufacturers have launched ultra-thin products one after another, and the thickness of the whole machine is less than 10mm. One of the factors restricting the further thinning of terminal products is the built-in speaker.

Most end products on the market use traditional dynamic speakers. The thickness of the speaker body is generally 3 to 4.5mm. Moreover, the performance of traditional loudspeakers depends on the design of the structural sound cavity, and it is necessary to ensure sufficient sound cavity volume to achieve the desired effect. Otherwise, it is easy to have audio problems such as low volume, poor sound effect, noise and broken sound. Therefore, in addition to the height requirements of the structural sound cavity, the thickness of the whole machine is generally more than 10mm, and it is difficult to achieve an ultra-thin design.

In order to alleviate the contradiction between ultra-thin design and audio quality, most of the ultra-thin terminal products on the market currently adopt the sound cavity Box solution, that is, the speaker core is directly integrated with the structural sound cavity Box, and the overall thickness can be less than 4mm. That's why there are terminal products with a thickness of 6.65mm available. However, the loudspeaker's loudspeaker effect is not ideal, and it cannot meet the user's demand for high-quality audio performance.

A high-tech nanomaterial was then applied to further enhance the audio performance of the ultra-thin design. Its application method is to spray the nano material in the structure sound cavity. When the speaker of the terminal is working, the nano-material has super sound absorption ability, intelligently changes the original acoustic characteristics of the sound cavity, which is equivalent to increasing the volume of the structural sound cavity, thereby improving the audio quality to a certain extent. However, this method is also optimized based on a certain sound cavity volume, and the materials are relatively expensive, which is not conducive to promotion.

At present, there are already acoustic manufacturers producing piezoelectric speakers, which are gradually being used in a batch of high-end smart terminal products. The thickness of a single piezoelectric speaker can reach 1.5mm, but the application also requires a structural sound cavity, so the overall thickness of the product cannot be made thinner. And limited by the area of the vibrating surface, there are generally problems such as low volume and poor sound quality.

Utility model content

The technical problem to be solved by the utility model is to provide a terminal and a terminal housing. When a piezoelectric speaker is used on the terminal, there is no need to set up a structural sound cavity, and it can meet the user's demand for high-quality audio performance.

In order to solve the above technical problems, a terminal of the present invention includes: a terminal housing, the terminal housing includes a structural housing and a piezoelectric speaker, and the piezoelectric speaker is embedded in the shell wall of the structural housing .

Further, the piezoelectric speaker includes: a piezoelectric ceramic sheet group and a metal sheet, the piezoelectric ceramic sheet group is arranged on one side of the metal sheet, and the metal sheet and the piezoelectric ceramic sheet are arranged The laterally opposite sides of the group are in contact with the shell walls of the structural shell.

Further, the group of piezoelectric ceramic sheets is laminated with multilayer piezoelectric ceramic sheets up and down.

Further, an opening matching the piezoelectric speaker is provided on the shell wall of the structural housing, and the side of the metal sheet of the piezoelectric speaker opposite to the side on which the piezoelectric ceramic sheet group is set is aligned with the piezoelectric speaker. fit the bottom surface of the opening.

Further, a terminal housing includes: a structural housing and a piezoelectric speaker, where the piezoelectric speaker is embedded in a housing wall of the structural housing.

Further, the piezoelectric speaker includes: a piezoelectric ceramic sheet group and a metal sheet, the piezoelectric ceramic sheet group is arranged on one side of the metal sheet, and the metal sheet and the piezoelectric ceramic sheet are arranged The laterally opposite sides of the group are in contact with the shell walls of the structural shell.

Further, the group of piezoelectric ceramic sheets is laminated with multilayer piezoelectric ceramic sheets up and down.

Further, an opening matching the piezoelectric speaker is provided on the shell wall of the structural housing, and the side of the metal sheet of the piezoelectric speaker opposite to the side on which the piezoelectric ceramic sheet group is set is aligned with the piezoelectric speaker. fit the bottom surface of the opening.

In summary, the utility model utilizes the ultra-thin characteristics of the piezoelectric ceramic sheet to design the piezoelectric speaker and the structural shell of the terminal as a whole, without the requirement of a structural sound cavity, and not only effectively solves the ultra-thin design of the terminal product requirements, and effectively ensure the audio quality.

Description of drawings

Fig. 1 is the front view of the terminal housing of the present invention;

Fig. 2 is a side view of the terminal housing of the present invention;

3 is a schematic diagram of the composition of the terminal housing of the present invention;

FIG. 4 is a schematic diagram of the structural housing in the terminal housing of the present invention.

Detailed ways

In this embodiment, the piezoelectric speaker and the structural shell of the terminal are integrated, so that the function of the built-in speaker of the terminal can be realized without increasing the thickness of the structural shell of the terminal, and it can be flexibly adjusted according to the shape of the structural shell of the terminal. The layout of the piezoelectric ceramic sheet in the design of the piezoelectric speaker is not limited by the shape, and the effective space of the structural shell is fully utilized to improve the audio quality. This embodiment not only makes it possible to make the terminal product more ultra-thin, but also takes into account the transmission quality of the audio to meet the user's needs for volume and sound quality.

In this embodiment, the piezoelectric speaker is used as a thin device, which has many advantages, such as simple structure, thin shape, low power consumption, anti-interference, waterproof and dustproof, and the like. The integration of the piezoelectric speaker and the structural shell is to use the simple structure and ultra-thin characteristics of the piezoelectric speaker to realize the thin design of the terminal product.

In this embodiment, the principle of resonant sound is used to use the structural shell of the terminal as a sound-generating radiating soundboard, which eliminates the structural sound cavity of the traditional loudspeaker. At the same time, creatively put forward the flexible counterweight scheme, apply finite element simulation design, equivalent circuit simulation design, guide the related piezoelectric speaker structure, and optimize the design of acoustics.

This embodiment provides a terminal, and the terminal includes a terminal casing.

As shown in FIGS. 1-2 , the terminal housing includes a structural housing 1 and a piezoelectric speaker 2 , and the piezoelectric speaker 2 is embedded in the housing wall of the structural housing 1 .

As shown in Figure 3, the piezoelectric speaker 2 includes: a piezoelectric ceramic sheet group 21 and a metal sheet 22, the piezoelectric ceramic sheet group 21 is arranged on one side of the metal sheet 22, and the piezoelectric ceramic sheet group of the metal sheet 22 is arranged The opposite side of the side of 21 is attached to the shell wall of the structural shell 1 .

As shown in Figure 4, an opening 11 matching the piezoelectric speaker 2 is provided on the shell wall of the structural housing 1, and the side of the metal sheet 22 of the piezoelectric speaker 2 that is opposite to the side where the piezoelectric ceramic sheet group 21 is arranged is aligned with the piezoelectric speaker 2. The bottom surface of the opening 11 is attached.

The piezoelectric ceramic sheet group 21 is a multilayer piezoelectric ceramic sheet laminated up and down, and very thin multi-layer (generally five to six) piezoelectric ceramic sheets are attached to the ultra-thin metal sheet 22, and the piezoelectric ceramic sheet The combination of group 21 and metal sheet 22 is the vibrating membrane.

The piezoelectric speaker 2 is embedded in the structural casing 1 to form a terminal casing with an ultra-thin piezoelectric speaker 2, which is used as a sounding device of an end product instead of a traditional speaker.

The shape and size of the piezoelectric ceramic sheet in the piezoelectric speaker 2 can be flexibly designed according to the actual size of the structural shell 1 . The terminal housing with the piezoelectric speaker and the terminal body can be connected by shrapnel crimping, lead wires or connectors.

The utility model is not only suitable for mobile terminal products such as smart phones, tablet computers, music players (such as MP3, MP4) and game consoles, but also suitable for other electronic products with ultra-thin design and sound quality requirements.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (8)

1. A terminal, characterized by comprising: a terminal housing, the terminal housing includes a structural housing and a piezoelectric speaker, and the piezoelectric speaker is embedded in a housing wall of the structural housing. the 2. The terminal according to claim 1, wherein the piezoelectric speaker comprises: a piezoelectric ceramic sheet group and a metal sheet, the piezoelectric ceramic sheet group is arranged on a first side of the metal sheet, The second side of the metal sheet opposite to the first side is attached to the shell wall of the structural shell. the 3. The terminal according to claim 2, wherein the group of piezoelectric ceramic sheets is a multilayer piezoelectric ceramic sheet bonded up and down. the 4. The terminal according to claim 2, wherein an opening matching the piezoelectric speaker is provided on the shell wall of the structural housing, and the metal sheet of the piezoelectric speaker is connected to the first A second side opposite to one side is attached to the bottom surface of the opening. the 5. A terminal housing, characterized by comprising: a structural housing and a piezoelectric speaker, wherein the piezoelectric speaker is embedded in a housing wall of the structural housing. the 6. The terminal housing according to claim 5, wherein the piezoelectric speaker comprises: a piezoelectric ceramic sheet group and a metal sheet, and the piezoelectric ceramic sheet group is arranged on a first side of the metal sheet Above, the second side of the metal sheet opposite to the first side is attached to the shell wall of the structural shell. the 7 . The terminal housing according to claim 6 , wherein the piezoelectric ceramic sheet group is a multilayer piezoelectric ceramic sheet bonded up and down. 8 . the 8. The terminal housing according to claim 6, wherein an opening matching the piezoelectric speaker is provided on the shell wall of the structural housing, and the metal sheet of the piezoelectric speaker is matched with the piezoelectric speaker. The second side opposite to the first side is attached to the bottom surface of the opening. the

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