WO2022062116A1

WO2022062116A1 - Sound production device

Info

Publication number: WO2022062116A1
Application number: PCT/CN2020/128313
Authority: WO
Inventors: 吴军; 杨虎虎
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2020-09-22
Filing date: 2020-11-12
Publication date: 2022-03-31
Also published as: CN213462136U

Abstract

The present utility model provides a sound production device, which comprises a housing having an accommodating space and a sound production unit accommodated in the housing. The accommodating space is divided into a front sound cavity and a rear cavity by the sound production unit, the housing comprises a sound production hole penetrating the housing, and the front sound cavity is in communication with the outside by means of the sound production hole; and the sound production device further comprises a first sound guide channel arranged on an outer side of the housing and defined by a sound guide wall, the first sound guide channel comprises a rotating section fixed to the housing and being in communication with the sound production hole and an extending section extending from the end of the rotating section away from the housing, the rotating section is of a bendable tubular structure, and the front sound cavity is in communication with the outside by means of the sound production hole and the first sound guide channel in sequence. Compared with the related art, the sound production device of the present utility model has a better flexibility.

Description

sound device

technical field

The utility model relates to the field of sound and electricity, in particular to a sound producing device.

Background technique

With the advent of the Internet era, the number of mobile terminal devices continues to rise. Among mobile devices, mobile phones are undoubtedly the most common and portable mobile terminal devices. Sound devices used to play music and other sounds are widely used in mobile terminal devices such as mobile phones, and the vibration system in the sound device is particularly important. The entire sound device vibrates through the vibration system to emit sound.

A related art sound-generating device includes a housing with a housing space and a sound-generating unit accommodated in the housing space. The sound-generating unit divides the housing space to form a front sound cavity and a back cavity, and the housing is provided with a penetrating sound unit on the housing. The sound-emitting hole communicates the front sound cavity with the outside world.

However, the sound-emitting hole of the sound-emitting device cannot be changed in direction according to actual needs, and the sound-emitting device cannot be arbitrarily matched with products, and the flexibility is poor.

Therefore, it is necessary to provide a new sound-generating device to solve the above problems.

technical problem

The purpose of the utility model is to provide a sounding device with better flexibility.

technical solutions

In order to achieve the above purpose, the present invention provides a sound-generating device, which comprises a housing with a receiving space and a sound-generating unit accommodated in the housing, and the sound-generating unit separates the housing space to form a front sound cavity and a rear sound chamber. The casing includes a sound-emitting hole passing through it, the sound-emitting hole communicates the front sound cavity with the outside world, and the sound-emitting device further includes a first sound-guiding wall surrounded by a sound-guiding wall disposed on the outside of the casing. A sound guide channel, the first sound guide channel includes a rotating section fixed on the casing and communicating with the sounding hole and an extension section extending from one end of the rotating section away from the casing, the rotating section is In the bendable tubular structure, the front acoustic cavity communicates with the outside world through the sound emission hole and the first sound guide channel in sequence.

Preferably, the outer side of the rotating segment includes at least two annular grooves spaced apart from each other from the housing toward the extending segment, the annular grooves are formed by concave on the outer surface of the rotating segment, and the annular grooves extending in the circumferential direction of the rotating segment.

Preferably, the annular grooves include four and are arranged at equal intervals.

Preferably, the rotating section is an elastic tubular structure.

Preferably, the housing comprises a bottom plate, a bottom plate side wall bent and extended from the periphery of the bottom plate, and a top plate covered on the bottom plate side wall, the bottom plate, the bottom plate side wall and the top plate together enclose The accommodating space is formed, and the sounding hole is arranged through the side wall of the bottom plate or the bottom plate.

Preferably, the bottom plate comprises a bottom wall, a first surrounding wall extending from the bottom wall toward the top plate, and a second surrounding wall extending from the outer side of the first surrounding wall in a direction away from the bottom wall, The end of the first enclosure wall away from the bottom wall and the second enclosure wall together form a positioning step, and the side of the sound-emitting unit with the vibrating membrane is fixed on the positioning step so that the vibrating membrane, The first enclosure wall and the bottom wall together enclose the front acoustic cavity.

Preferably, the bottom plate further includes a notch recessed from the first surrounding wall to the bottom wall, an extension wall extending from the sounding hole to the notch, and the extension wall and the bottom wall together enclose The second sound guide channel, the front sound cavity is communicated with the outside through the gap, the second sound guide channel, the sound emission hole and the first sound guide channel in sequence to form a side sound emission structure.

beneficial effect

Compared with the related art, the sound-generating device of the present invention further comprises a first sound-guiding channel surrounded by a sound-guiding wall and disposed on the outside of the casing, and the first sound-guiding channel comprises a A rotating section communicated with the sounding hole and an extension section extending from the rotating section away from one end of the casing, the rotating section is a bendable tubular structure, and the front sound cavity passes through the sounding hole and the The first sound guide channel is communicated with the outside world; with this structure, the front sound cavity is communicated with the outside world to achieve sound production, and at the same time the first sound guide channel changes direction by rotating the rotating segment, so that the first sound guide channel changes direction. The sound channel can be matched with different types of products, that is, while taking into account the standardization of sound devices, it can solve the problem of small changes in customer products; only the first sound guide channel is added to realize the change of direction, and the cost is low.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

Fig. 1 is the stereoscopic structure schematic diagram of the sound-emitting device of the present invention;

Fig. 2 is the three-dimensional structure exploded schematic diagram of the sound-emitting device of the present invention;

FIG. 3 is a cross-sectional view along A-A in FIG. 1 .

Embodiments of the present invention

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to FIGS. 1-3 , the present invention provides a sound-generating device 100 . The sound-generating device 100 includes a housing 1 having an accommodation space 10 , a sound-generating unit 3 accommodated in the accommodation space 10 and used to generate sound, and The first sound guide channel 23 surrounded by the sound guide wall 2 . The sound-generating unit 3 divides the receiving space 10 to form a front sound cavity 10a and a rear cavity 10b, which include a diaphragm 31 for vibrating and sounding.

The casing 1 includes a bottom plate 11 , a bottom plate side wall 12 bent and extended from the periphery of the bottom plate 11 , a top plate 13 covered on the bottom plate side wall 12 , and a sounding hole 14 . The bottom plate 11 , the bottom plate The side wall 12 and the top plate 13 together enclose the receiving space 10 , and the side wall 12 of the bottom plate is provided with a sounding hole 14 passing through it and used to communicate the front sound cavity 10a with the outside world. Of course, the sounding hole 14 14 is not limited to being provided on the side wall of the bottom plate, but may also be provided on the top plate 13 or the bottom plate 11 .

Specifically, the bottom plate 11 includes a bottom wall 111 , a first surrounding wall 112 extending from the bottom wall 111 to the top plate 13 , and a direction away from the bottom wall 111 from the outside of the first surrounding wall 112 . A second extending wall 113 , a notch 115 recessed from the first surrounding wall 112 to the bottom wall 111 , and an extension wall 114 extending from the sounding hole 14 to the notch 115 , the first surrounding wall One end of 112 away from the bottom wall 111 and the second surrounding wall 113 together form a positioning step 121, and the side of the sound-emitting unit 3 with the diaphragm 31 is fixed to the positioning step 121 so that the The diaphragm 31 , the first surrounding wall 112 and the bottom wall 111 together form the front acoustic cavity 10a. That is, by setting the positioning step 121 , when assembling the sounding device 100 , the sounding unit 3 can be quickly positioned and fixed. One end of the extending wall 114 away from the sounding hole 14 abuts against the first surrounding wall 112 , the second surrounding wall 113 and the bottom wall 111 at the same time, and the extending wall 114 and the bottom wall 111 together form a second wall Sound channel 1140.

The first sound guide channel 23 is arranged on the outside of the housing 1 , and the first sound guide channel 23 includes a rotating segment 21 fixed to the housing 1 and communicating with the sounding hole 14 , and a rotating segment 21 formed by the rotating segment 21 . The extension section 22 extending away from one end of the housing 1, the rotating section 21 is a bendable tubular structure.

In this embodiment, the rotating section 21 and the extending section 22 are sequentially connected to form a first sound guide channel 23, and the front acoustic cavity 10a passes through the gap 115, the second sound guide channel 1140, the sound emitting channel in sequence The hole 14 and the first sound guide channel 23 communicate with the outside to form a side sounding structure.

Preferably, the outer side of the rotating segment 21 includes at least two annular grooves 211 spaced from each other from the housing 1 toward the extending segment 22 , and the annular grooves 211 are recessed from the outer surface of the rotating segment 21 . The annular groove 211 is formed and extends along the circumferential direction of the rotating segment 21 . Preferably, the annular grooves 211 include four and are arranged at equal intervals. That is, by setting the first sound guide channel 23, the front sound cavity 10a is communicated with the outside world to realize sound production, and at the same time, the first sound guide channel 23 can change the direction by rotating the rotating section 21, so that the first sound guide channel 23 can change the direction. 23 can be matched with different types of products.

Preferably, the rotating section 21 is an elastic tubular structure, which is beneficial for the rotating section 21 to adjust and rotate its axial direction.

The present utility model provides an embodiment of the present utility model as described above, which is not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the contents of the specification and accompanying drawings of the present utility model, or Directly or indirectly used in other related technical fields, are all similarly included in the scope of patent protection of the present invention.

Claims

A sound-generating device, which includes a housing with a housing space and a sound-generating unit accommodated in the housing, the sound-generating unit separates the housing space to form a front sound cavity and a rear cavity, and the housing includes a sound-generating unit extending through the housing. The sound-emitting hole on the front sound-emitting hole communicates the front sound cavity with the outside world. The first sound guide channel includes a rotating section fixed on the casing and communicating with the sounding hole and an extension section extending from one end of the rotating section away from the casing, and the rotating section is a bendable tubular shape structure, the front sound cavity is communicated with the outside world through the sound emission hole and the first sound guide channel in sequence.
The sound-generating device according to claim 1, wherein the outer side of the rotating section includes at least two annular grooves spaced from each other along the housing toward the extending section, and the annular grooves are formed by the The outer surface of the rotating segment is formed concavely and the annular groove extends along the circumferential direction of the rotating segment.
The sound-generating device according to claim 2, wherein the annular grooves include four and are arranged at equal intervals.
The sound-generating device according to claim 3, wherein the rotating section is an elastic tubular structure.
The sound-generating device according to claim 1, wherein the casing comprises a bottom plate, a bottom plate side wall bent and extended from a peripheral edge of the bottom plate, and a top plate covered on the bottom plate side wall, the bottom plate , the side wall of the bottom plate and the top plate together form the receiving space, and the sounding hole is arranged through the side wall of the bottom plate or the bottom plate.
The sound-generating device according to claim 5, wherein the bottom plate comprises a bottom wall, a first surrounding wall extending from the bottom wall to the direction of the top plate, and a first surrounding wall extending away from the outer side of the first surrounding wall The second surrounding wall extending in the direction of the bottom wall, the end of the first surrounding wall away from the bottom wall and the second surrounding wall together form a positioning step, and the side of the sound-emitting unit with the vibrating membrane is fixed On the positioning step, the diaphragm, the first surrounding wall and the bottom wall together form the front acoustic cavity.
The sound-emitting device according to claim 6, wherein the bottom plate further comprises a notch recessed from the first surrounding wall to the bottom wall, and an extension wall extending from the sound-emitting hole to the notch, The extension wall and the bottom wall together form a second sound guide channel, and the front sound cavity is communicated with the outside world through the gap, the second sound guide channel, the sound emission hole and the first sound guide channel in turn to communicate with the outside world. A side-firing structure is formed.