CN110166906B

CN110166906B - Neck strap speaker including micro speaker module with passive vibrator

Info

Publication number: CN110166906B
Application number: CN201810246386.2A
Authority: CN
Inventors: 权重鹤; 金庸烋
Original assignee: EM Tech Co Ltd
Current assignee: EM Tech Co Ltd
Priority date: 2018-02-13
Filing date: 2018-03-23
Publication date: 2022-01-14
Anticipated expiration: 2038-03-23
Also published as: CN110166906A; KR102029076B1; KR20190097937A

Abstract

The present disclosure is directed to a neck strap speaker including a micro-speaker module with a passive vibrator such that the micro-speaker module can provide a vibration function without a separate vibration motor. The present disclosure provides a neckband speaker including a micro-speaker module with a passive vibrator, comprising: a neckband frame to be worn around a user's neck; a plurality of micro-speaker modules mounted in the frame; and a controller for controlling the micro-speaker module, wherein the micro-speaker module includes: a case having an inner space, a first opening formed in a first surface of the case in which the micro-speaker is mounted, and a second opening formed in a second surface of the case in which the passive vibrator is mounted; a micro speaker for emitting sound through the first opening; and a passive vibrator for attenuating air stiffness in the interior space of the housing.

Description

Neck strap speaker including micro speaker module with passive vibrator

Technical Field

The present invention relates to a neck strap speaker including a micro speaker module with a passive vibrator.

Background

Bluetooth denotes a near field wireless technology standard that connects mobile devices such as cellular phones, laptop computers, earphones, headphones, and the like to each other to exchange information. Which is useful in situations where low power wireless connections are required, typically over short distances of about 10 meters. For example, bluetooth headsets enable a user to listen to music from an MP3 player in his/her pocket without using cumbersome cables.

With existing bluetooth technology, a headset is connected to a cellular phone via bluetooth, which enables a user to make a call while driving without using his/her hands.

Meanwhile, with the popularity of smartphones and tablet computers, a user can enjoy movies or music anywhere using his/her smartphone and tablet computer. However, due to the limitation of micro speakers built in smartphones and tablet computers, it is impossible to reproduce sound with high quality. The aforementioned problems may be solved using bluetooth speakers connected to smartphones and tablets via bluetooth.

In addition, for the convenience of users, a neck band type speaker worn around the neck of a user has been developed. Such a neck band speaker uses sound and vibration together to inform its operation state or to produce various other effects when playing games or watching movies. The conventional neck band type speaker has disadvantages of heavy weight and large power consumption because it includes a vibration module for generating vibration and a micro speaker module.

Disclosure of Invention

It is an object of the present invention to provide a neck band type speaker including a micro speaker module having a passive vibrator so that the micro speaker module can provide a vibration function without a separate vibration motor.

According to an aspect of the present invention for achieving the above objects, there is provided a neck band type speaker including a micro speaker module having a passive vibrator, comprising: a neckband frame worn around a user's neck; a plurality of micro-speaker modules mounted in the frame; and a controller for controlling the micro-speaker module, wherein the micro-speaker module includes: a case having an inner space, a first opening formed in a first surface of the case, in which the micro-speaker is mounted, and a second opening formed in a second surface of the case, in which the passive vibrator is mounted; a micro speaker for emitting sound through the first opening; and a passive vibrator for attenuating air stiffness in the interior space of the housing.

In some embodiments, the first opening of the housing may be oriented upward relative to the neckband frame and the second opening of the housing may be oriented downward relative to the neckband frame.

In some embodiments, the passive vibrator may have a smaller thickness than the micro-speaker.

In some embodiments, a passive vibrator may include a diaphragm and a body portion for adding mass, the body portion being disposed at a center of the diaphragm.

In some embodiments, the neck band speaker may further include an annular structure disposed on the outer periphery of the diaphragm to facilitate mounting of the passive vibrator.

In some embodiments, the second opening may be provided with a step portion, and the ring-shaped structure may be provided with a step portion that engages with the step portion of the second opening.

In some embodiments, the ring-shaped structure may include a plurality of protrusions on a surface in contact with the micro-speaker.

In some embodiments, the body portion may be made of a metallic material.

In some embodiments, an opening may be formed at a central portion of the diaphragm.

In some embodiments, the dome portion and the body portion may be located at a maximum amplitude of the passive vibrator in the second opening.

In some embodiments, the resonant frequency of the passive vibrator may be lower than the resonant frequency of the micro-speaker.

The neck band type speaker including the micro speaker module having the passive vibrator according to the present invention may improve a low-band sound pressure level using the passive vibrator for absorbing rigidity caused by air volume in the case.

Further, since the resonance frequency of the passive vibrator is set to a low frequency band outside the audible frequency, the neck band type speaker including the micro-speaker module having the passive vibrator according to the present invention may enable the micro-speaker module to perform a vibration function without using a separate vibration motor.

Drawings

Fig. 1 shows an exploded view of a neck strap speaker including a micro-speaker module with a passive vibrator according to an embodiment of the present invention.

Fig. 2 shows an exploded perspective view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention, as seen from the top.

Fig. 3 shows an exploded perspective view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention, as seen from the bottom.

Fig. 4 shows a diagram of a passive vibrator provided in a neck strap loudspeaker according to an embodiment of the invention.

Fig. 5 illustrates an exploded cross-sectional view of a micro-speaker module disposed in a neck strap speaker according to an embodiment of the present invention.

Fig. 6 illustrates a cross-sectional view of a micro-speaker module disposed in a neck strap speaker according to an embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of a neck band type speaker including a micro speaker module having a passive vibrator according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows an exploded view of a neck strap speaker including a micro-speaker module with a passive vibrator according to an embodiment of the present invention. The neck strap speaker according to an embodiment of the present invention includes a C-shaped frame that can be worn around the neck of a user, wherein various electronic components such as the micro-speaker module 200 and the PCB 310 are disposed in the frame. The frame includes a C-shaped base frame 110, and an inner cover 120 and an outer cover 130 coupled to the base frame 110.

One micro-speaker module 200, one PCB 310, and one battery 320 are provided at each of both ends of the C-shaped base frame 110. The inner cover 120 covers the electronic components and the bottom, inner and top surfaces of the C-shaped base frame 110, and the outer cover 130 is coupled to the inner cover 120 to cover the electronic components and the outer surface of the C-shaped frame 110.

A sound emission hole 122 for emitting sound generated from the micro-speaker module 200 is formed in the top surface of the inner cover 120, and a vent hole 124 for promoting air flow is formed in the bottom surface of the inner cover 120.

Fig. 2 shows an exploded perspective view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention as seen from the top, and fig. 3 shows an exploded perspective view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention as seen from the bottom. The micro-speaker module 200 includes:

housings

210 and 220 for defining a resonance space; a micro speaker 230 mounted on the top surface of the

housings

210 and 220 for converting an electric signal into a sound pressure to generate air vibration; and a passive vibrator 240 mounted on the bottom surface of the

housings

210 and 220 for attenuating rigidity of air in the

housings

210 and 220.

The

housings

210 and 220 are composed of an upper portion 210 and a lower portion 220, a first receiving portion 214 formed in an upper surface of the upper portion 210, a second receiving portion 224 formed in a bottom surface of the lower portion 220, a micro-speaker 230 mounted in the first receiving portion 214, and a passive vibrator 240 mounted in the second receiving portion 224. In addition, a first opening 212 for emitting sound generated from the micro-speaker 230 is formed in the top surface of the first receiving portion 214, and a second opening 222 for emitting sound generated from the passive vibrator 240 is formed in the bottom surface of the second receiving portion 224.

The micro-speaker 230 has already been easily recognized by those skilled in the art, and thus a detailed description thereof will be omitted. A foam (poron)236 is attached to the bottom surface of the micro-speaker 230 to absorb shock.

Fig. 4 shows a diagram of a passive vibrator provided in a neck strap loudspeaker according to an embodiment of the invention. The passive vibrator 240 having a given mass and stiffness is not separately provided with electric power or an electric signal. The passive vibrator 240 is installed at a position corresponding to the second opening 222 formed in the bottom surface of the lower portion 220 of the housing to emit sound through the second opening 222. The passive vibrator 240 has a smaller thickness compared to the micro-speaker 230, which prevents the volume of the resonance space in the housing from being reduced.

The passive vibrator 240 includes: a diaphragm 242; a body portion 244 made of a metal material having a high specific gravity such as iron, copper, tungsten, or the like, for increasing the mass of the diaphragm 242; and a ring structure 246 to facilitate installation of the passive vibrator 240. The diaphragm 242 has a dome portion for promoting vibration. The body portion 244 is attached to the center of the diaphragm 242, and an opening may be formed at the center to which the body portion 244 is attached. Annular structure 246 is formed in an annular shape corresponding to the outer periphery of diaphragm 242. A plurality of protrusions 246a protrude upward from the top surface of the ring structure 246 and are coupled to the bottom surface of the micro-speaker 230. Preferably, the protrusion 246a is formed at a position corresponding to the foam 236 (see fig. 3) attached to the bottom surface of the micro-speaker 230 to prevent the vibration of the passive vibrator 240 from being transmitted to the micro-speaker 230. Meanwhile, the bottom surface of the ring structure 246 is coupled to the second receiving portion 224 of the lower portion 220 of the housing. Preferably, the second container 224 of the lower portion 220 of the housing is provided with a stepped portion 226 to have different inner and outer heights, and a bottom surface of the ring structure 246 is provided with a stepped portion 246b, the stepped portion 246b corresponding to the stepped portion 226 of the second container 224 so that they can be engaged with each other.

Fig. 5 illustrates an exploded cross-sectional view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention, and fig. 6 illustrates a cross-sectional view of a micro-speaker module provided in a neck band speaker according to an embodiment of the present invention.

As previously described, the upper and

lower parts

210 and 220 of the case are coupled to each other to define the external appearance of the micro-speaker module 200 such that the installation spaces of the micro-speaker 230 and the passive vibrator 240 are disposed inside and the resonance space RS is provided around the installation spaces of the micro-speaker 230 and the passive vibrator 240. The first receiving portion 214 is formed in the upper portion 210 of the case to facilitate the installation of the micro-speaker 230, and the upper portion of the micro-speaker 230 is inserted into the first receiving portion 214. The first opening 212 is formed in the top surface of the first receiving portion 214 and is located on the top of the micro-speaker 230. A second receiving portion 224 is formed in the lower portion 220 of the housing to facilitate the installation of the passive vibrator 240, the passive vibrator 240 is coupled to the second receiving portion 224, and a second opening 222 is formed in a bottom surface of the second receiving portion 224. As described above, the passive vibrator 240 includes a ring-shaped structure 246 that facilitates installation of the passive vibrator 240. In addition, the ring structure 246 ensures a gap between the passive vibrator 240 and the micro-speaker 230, which prevents the ring structure 246 from striking the micro-speaker 230 when vibrating. In addition, protrusions 246a are formed on the top surface of the ring structure 246 so that air can flow between the protrusions 246 a. Accordingly, air may flow between the resonance space RS, the micro-speaker 230, and the passive vibrator 240.

On the other hand, if the resonance frequency of the passive vibrator 240 is set to a low frequency band outside the audible frequency, the passive vibrator 240 causes resonance to generate relatively large vibration when the micro-speaker 230 generates a sound wave corresponding to the resonance frequency of the passive vibrator 240. Thus, the neck band type speaker including the micro-speaker module 200 having the passive vibrator 240 according to the present invention can provide a vibration function to a user without a separate vibration motor. As described previously, the micro-speaker 230 is disposed on the top surface of the

housings

210 and 220 to emit sound in a direction toward the user's ears, and the passive vibrator 240 is disposed on the bottom surface of the

housings

210 and 220 to contact the user's body, so that the user can easily feel vibrations.

Claims

1. A neckband speaker including a micro-speaker module with a passive vibrator, comprising:

a neckband frame worn around a user's neck;

a plurality of micro-speaker modules mounted in the frame; and

a controller for controlling the micro-speaker module,

wherein the micro speaker module includes:

a housing having: a first portion having a first surface, a second portion having a second surface and coupled with the first portion, an inner space forming a resonance space inside the case, a first opening formed in the first surface of the first portion of the case in which a micro-speaker is mounted, a second opening formed in the second surface of the second portion of the case in which a passive vibrator is mounted facing the first opening;

the micro-speaker for emitting sound through the first opening; and

the passive vibrator for attenuating air rigidity in the inner space of the housing and for emitting sound generated by the passive vibrator through the second opening,

wherein the passive vibrator is composed of a diaphragm and a body part for increasing mass, which is disposed at the center of the diaphragm and is made of a metal material, wherein a resonance frequency of the passive vibrator is lower than a resonance frequency of the micro-speaker, the resonance frequency of the passive vibrator being a low frequency band outside an audible frequency, and wherein the passive vibrator causes resonance to generate relatively large vibration when the micro-speaker generates a sound wave corresponding to the resonance frequency of the passive vibrator, so that a user can easily feel the vibration,

wherein the mounting spaces of the micro-speaker and the passive vibrator are provided in the internal space of the case, and the resonance space is provided around the mounting spaces of the micro-speaker and the passive vibrator inside the case,

a gap is provided between the passive vibrator and the micro-speaker so that air can flow between the resonance space, the micro-speaker, and the passive vibrator.

2. The neckband speaker of claim 1, wherein the first opening of the housing is oriented upward with respect to the neckband frame and the second opening of the housing is oriented downward with respect to the neckband frame.

3. The neck strap speaker of claim 1, wherein the passive vibrator has a smaller thickness than the micro-speaker.

4. The neckband speaker of claim 1, further comprising an annular structure disposed on an outer periphery of the diaphragm to facilitate mounting of the passive vibrator.

5. The neck band loudspeaker of claim 4, wherein the second opening is provided with a stepped portion and the ring structure is provided with a stepped portion that engages the stepped portion of the second opening.

6. The neckband speaker of claim 4, wherein the ring structure comprises a plurality of protrusions on a surface in contact with the micro-speaker.

7. The neckband speaker of claim 1, wherein an opening is formed at a center portion of the diaphragm.

8. The neck strap speaker of claim 1, wherein a dome portion and the body portion are located at a maximum amplitude of the passive vibrator in the second opening.