CN212628400U - Handheld terminal device and handheld terminal sound cavity structure thereof - Google Patents

Abstract

The utility model relates to a hand-held terminal device and a hand-held terminal sound cavity structure thereof, wherein the hand-held terminal sound cavity structure comprises a sound cavity part and a loudspeaker which is arranged on the sound cavity part and is used for transmitting sound; the sound cavity part is provided with an opening for mounting the loudspeaker thereon, and the loudspeaker transmits sound in a sound cavity defined by the sound cavity part through a loudspeaker vibrating membrane; the sound cavity part comprises at least one elastic component for buffering air fluctuation in the sound cavity. The sound cavity structure design is not limited by the size and the appearance of a handheld terminal product, and the appearance and the size of the handheld terminal product can be ensured not to be influenced.

Description

Handheld terminal device and handheld terminal sound cavity structure thereof

Technical Field

The utility model relates to a voiced electronic product field, more specifically says, relates to handheld terminal device and handheld terminal sound cavity structure thereof.

Background

The existing handheld terminal device is lighter, thinner and smaller in appearance. With this trend, the internal installation space is also becoming more and more compact. And the sound effect is not acceptable by means of simply increasing the space of the front cavity and the rear cavity, replacing a horn with larger size and the like. In the related art, a passive radiator is generally installed on an external surface of a handheld terminal device to improve a sound effect of the handheld terminal device, and the principle is to reflect sound waves emitted by a loudspeaker and superpose the sound waves radiated in front of the loudspeaker so as to improve a sound effect of the handheld terminal device. Firstly, the device is a passive radiator and is positioned on the appearance surface of the mobile terminal to influence the appearance of the mobile terminal; secondly, the device utilizes the rear shell to seal with the main board, and meanwhile, the rear shell is additionally provided with a structural member to separate the front sound cavity from the rear sound cavity, and devices cannot be pasted in the corresponding area of the main board and are used for pasting sealing foam and sound flowing of the rear sound cavity; and thirdly, the device is a passive radiator scheme and is mainly used for large-size devices such as sound boxes, televisions and the like, and a light, thin and small handheld terminal product is not suitable for the passive radiator scheme.

Fig. 1 is a sound generating device of a handheld terminal in the related art, which includes a sound cavity structure 100, and a speaker 300 disposed on the sound cavity structure 100, where the sound cavity structure 100 includes a sound cavity housing 200, and the speaker is disposed on the sound cavity housing 200. Sound is transmitted to the outside through the vibration of the horn membrane of the horn 300 and the fluctuation of air, and the fluctuation of air is rebounded by the wall surface of the surrounding rigid sound cavity shell 200 in a narrow space, so that the sound pressure in the space is increased, the amplitude of the horn 300 is weakened, and the sound effect is reduced. How to reduce the bounce of the rigid sound cavity housing 200 to the air fluctuation caused by sound without changing the size of the horn has been the subject of research by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a handheld terminal device and handheld terminal sound cavity structure thereof is provided.

The utility model provides a technical scheme that its technical problem adopted is: constructing a handheld terminal device and a handheld terminal sound cavity structure thereof, wherein the handheld terminal sound cavity structure comprises a sound cavity part and a loudspeaker which is arranged on the sound cavity part and is used for transmitting sound;

the sound cavity part is provided with an opening for the loudspeaker to be installed on, and the loudspeaker transmits sound in a sound cavity defined by the sound cavity part;

the sound cavity part comprises at least one elastic component.

In some embodiments, the sound cavity portion includes a first wall surface and a second wall surface opposite to the first wall surface, the speaker is mounted on the first wall surface, the sound hole of the speaker faces the second wall surface, and the at least one elastic member is disposed on the second wall surface.

In some embodiments, the resilient member is disposed within a sound cavity and is spaced apart from and parallel to the second wall within the sound cavity.

In some embodiments, the elastic member includes an elastic membrane, a clamping portion is disposed in the sound cavity portion and parallel to and spaced apart from the second wall surface, and the elastic membrane is disposed in the clamping portion.

In some embodiments, the sound cavity portion includes a side wall surface located between the first wall surface and the second wall surface, the sound cavity portion includes a plurality of elastic members, and the elastic members are disposed at both the side wall surface and the second wall surface.

In some embodiments, the elastic member is provided at the first wall surface.

In some embodiments, the elastomeric component is made of a soft material.

In some embodiments, the elastic member is made of a silicone material.

In some embodiments, the soft material is used in place of the rigid material of the sound chamber portion.

A handheld terminal device comprises the handheld terminal sound cavity structure.

Implement the utility model discloses a handheld terminal device and handheld terminal sound chamber structure thereof has following beneficial effect: through setting up elastomeric element in the sound chamber of sound chamber structure, improve sound effect, have the advantage that does not change handheld terminal product size, does not influence its outward appearance, and the size appearance that the application of this sound chamber structure is not influenced by handheld terminal product, can be applied to in the multiple product.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic structural diagram of a prior art sound cavity structure of a handheld terminal without an elastic component;

fig. 2 is a schematic structural diagram of a sound cavity structure of a handheld terminal according to some embodiments of the present invention;

fig. 3 is a comparison graph of the frequency direction curve effect of the sound cavity structure without the elastic member (original structure) shown in fig. 1 and the sound cavity structure with the elastic member (present embodiment) shown in fig. 2.

Detailed Description

For a clearer understanding of the technical features, objects, and effects of the present invention, reference will now be made to the accompanying drawings.

It should be noted that the terms upper, lower, left, right, front, rear, etc. indicate the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred unit or element must have a specific orientation, be constructed in a specific orientation or operation, and thus should not be construed as limiting the present invention.

Along with the increasingly frivolous miniaturization of current handheld terminal device, it becomes more difficult to change its sound effect through increasing loudspeaker size, consequently this paper adopts and increases elastomeric element in the sound intracavity size of original loudspeaker place sound cavity structure to reduce the air fluctuation that arouses by the sound wave and the interact that the rigid wall collision of sound cavity structure produced, thereby reduce the defect of sound effect performance. The specific principle is as follows: the sound is the vibration of the diaphragm of the horn and is transmitted to the outside without interruption by the fluctuation of the air. However, in a narrow sound cavity space, the air wave is rebounded by the rigid wall surface in the surrounding sound cavity, so that the sound pressure in the space is increased, the amplitude of the horn is weakened, and the sound effect is reduced, as shown in fig. 1. According to the scheme, the elastic component is added in the sound cavity structure of the handheld terminal device, the deformation of the elastic component is utilized to play a buffering role in air fluctuation, the internal sound pressure is reduced, the influence on the amplitude of the loudspeaker is reduced, and the sound effect is improved, as shown in figure 2.

Fig. 2 shows a handheld terminal sound cavity structure according to some embodiments of the present invention, which may include a housing 10 for accommodating internal components of a handheld terminal product, such as a speaker, a sound cavity 20, a speaker 30 disposed on the sound cavity 20 for transmitting sound, and an elastic member 40 disposed in the sound cavity 20 for buffering air fluctuation caused by sound waves. The cavity portion 20 is provided in the housing 10 or as a part of the housing 10.

In some embodiments, the housing 10 is made of hard material, which is used to protect the components disposed inside the housing on one hand and to facilitate the design of the handheld terminal device on the other hand. The housing 10 may be made of a plastic hard material or a metal alloy material.

In some embodiments, the sound cavity portion 20 defines an opening 21 for mounting the speaker 30 thereon, and the speaker 30 transmits sound in the sound cavity defined by the sound cavity portion 20. The cavity portion 20 may include a first wall surface 22 and a second wall surface 23 opposite to the first wall surface 22, the opening 21 is opened on the first wall surface 22, the speaker 30 is mounted at the opening 21, and a sound hole (not shown) of the speaker 30 for outputting sound is directed toward the second wall surface. The cavity portion 20 further includes side wall surfaces 24 between the first wall surface 22 and the second wall surface 23, the side wall surfaces 24 being located on both sides of the horn 20. The first wall 22, the second wall 23, the side wall 24 and the speaker 30 together define a sound chamber 25 for transmitting sound.

The speaker 30 may include a diaphragm and a sound hole (not shown). The sound is transmitted to the sound hole by the vibration of the diaphragm and is continuously transmitted to the outside by the fluctuation of the air in the sound chamber 25. Specifically, sound is transmitted to the air in the sound cavity 25 through the sound holes, the sound waves drive the air to fluctuate, and the elastic member 40 has a buffering effect on the air fluctuation, so that the elastic member does not directly act on the wall surfaces (the second wall surface 23, the side wall surface 24 and the first wall surface 22) of the rigid material sound cavity part 20, the sound pressure in the sound cavity 25 is reduced, the influence on the amplitude of the horn 30 is reduced, and the sound effect is improved.

In some embodiments, the elastic member 40 may comprise an elastic film. Preferably, the elastic membrane is provided at the second wall surface 23 and is spaced in parallel with the second wall surface 23, i.e., is disposed opposite to the sound hole, i.e., the direct propagation direction of the sound is opposite to the elastic membrane. The deformation of this elastic membrane can effectively be utilized to this setting and the undulant cushioning effect of air that arouses by sound reduces inside acoustic pressure, reduces the influence of loudspeaker amplitude, improves the sound effect. Specifically, the side wall surface 24 of the sound cavity portion 20 is provided with a clamping portion 26, the clamping portion 26 includes an upper clamping portion 261 provided on the upper side wall surface and a lower clamping portion 262 provided on the lower side wall surface, and the upper and lower clamping portions 26 support a space for the elastic film to be disposed thereon. The clamping portion 26 may be in the form of a thin plate. Preferably, the clip portions 26 are both spaced parallel to the second wall 23, together with the elastic membrane, as shown in fig. 2.

In some embodiments, the elastic member 40 may be disposed on the first wall surface 22 and/or the side wall surface 24 of the sound cavity portion 20.

In some embodiments, the resilient member 40 is made of a soft material and can be attached to the first wall 22, the second wall, or/and the sidewall. Or integrally formed on the inner wall surface of the sound cavity part. In some embodiments, the whole sound cavity portion 20 may also be the whole elastic component 40, that is, the sound cavity portion 20 may be integrally formed by using a soft material, for example, a soft material such as silica gel may be used to replace the sound cavity portion 20 of the rigid shell, so as to reduce the sound pressure inside the sound cavity. In short, the elastic member 40 may be deformed to absorb sound waves generated by sound transmission into the air.

Fig. 3 is a comparison graph of frequency curves of the structure of the present solution with the elastic component and the structure of the prior art solution without the elastic component, and it can be seen from the graph that the sound effect of the present solution with the elastic component is better than that of the original structure without the elastic component under the condition that the other parameters are the same. As shown in fig. 3, especially, the sound effect of the structure of the present solution with the elastic component under a (hz) and b (hz) is significantly higher than that of the original structure.

The amplitude of the horn 30 itself is fixed. In a narrow space, the air wave generated by the vibration of the horn 30 is overlapped with the air wave after being rebounded by touching the wall surface of the rigid sound cavity part, so that the sound pressure in the sound cavity 25 is increased, the vibration of a horn vibrating membrane is restricted, the amplitude of the horn is weakened, and the sound effect is reduced. Increase elastomeric element 40 in sound chamber 25, through elastomeric element 40's deformation play the cushioning effect to the air fluctuation, balanced inside acoustic pressure, the external influence that greatly reduced loudspeaker amplitude received has restoreed the original sound effect of loudspeaker 30. The scheme improves the sound effect under the precondition that the structure space is not increased and the size of the loudspeaker is not increased, and is consistent with the light weight and the miniaturization of a handheld terminal device. And has the following advantages:

1. the elastic component is arranged in the sound cavity of the sound cavity structure, and has no influence on the appearance of the handheld terminal product;

2. the sound cavity structure design does not relate to a mainboard device and does not influence any layout of the mainboard;

3. the method has no limit requirements on the appearance size and the appearance of the handheld terminal product, and can be applied to products with different sizes.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (10)

1. A hand-held terminal sound cavity structure comprises a sound cavity part and a loudspeaker which is arranged on the sound cavity part and is used for transmitting sound;

the sound cavity part is provided with an opening for mounting the loudspeaker thereon, and the loudspeaker transmits sound in a sound cavity defined by the sound cavity part through a loudspeaker vibrating membrane;

the sound cavity part is characterized by comprising at least one elastic component for buffering air fluctuation in the sound cavity.

2. The structure of a cavity of a handheld terminal as claimed in claim 1, wherein the cavity includes a first wall and a second wall opposite to the first wall, the speaker is mounted on the first wall, the sound hole of the speaker faces the second wall, and the at least one elastic member is disposed on the second wall.

3. The sound cavity structure of the handheld terminal as claimed in claim 2, wherein the elastic member is disposed in the sound cavity and spaced apart from and parallel to the second wall surface.

4. The sound cavity structure of the handheld terminal as claimed in claim 3, wherein the elastic member includes an elastic membrane, a clamping portion is disposed in the sound cavity and parallel to the second wall surface, and the elastic membrane is disposed in the clamping portion.

5. The structure of a hand-held terminal sound cavity according to claim 2, wherein the sound cavity portion includes a side wall surface between the first wall surface and the second wall surface, the sound cavity portion includes a plurality of elastic members, and the elastic members are provided at both the side wall surface and the second wall surface.

6. The sound cavity structure of the handheld terminal as claimed in claim 5, wherein the elastic member is provided at the first wall surface.

7. The structure of any one of claims 1 to 6, wherein the elastic member is made of a soft material.

8. The sound cavity structure of the handheld terminal as claimed in claim 7, wherein the elastic member is made of a silicone material.

9. The structure of the sound cavity of a handheld terminal as claimed in claim 7, wherein the soft material is used instead of the rigid material of the sound cavity.

10. A hand-held terminal device comprising the hand-held terminal sound cavity structure of any one of claims 1 to 9.

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