WO2014131251A1

WO2014131251A1 - Double-horn type earplug

Info

Publication number: WO2014131251A1
Application number: PCT/CN2013/076465
Authority: WO
Inventors: 温增丰; 温景纶
Original assignee: 东莞泉声电子有限公司
Priority date: 2013-03-01
Filing date: 2013-05-30
Publication date: 2014-09-04
Also published as: CN103227970A; CN103227970B

Abstract

A double-horn type earplug comprises a shell, a woofer and a tweeter. An accommodating cavity is provided inside a rear end of the shell, a concave cavity is concavely arranged on a front end surface of the shell, a sound guiding chamber is arranged inside the shell, two or multiple axially extended convex ribs are convexly arranged in an inner side wall circle of the concave chamber at intervals, a space between two adjacent convex ribs and an external wall of the tweeter form sound guiding holes together, and the sound guiding holes communicate with the sound guiding chamber; the woofer is mounted in the accommodating cavity and arranged behind the sound guiding chamber; and the tweeter is embedded in the concave cavity and arranged among multiple convex ribs in a clamping way, and the sound guiding holes are distributed at a periphery of the tweeter. Thus, sound generated by the tweeter is directly sent out, and sound generated by the woofer is sent out from multiple sound guiding holes at the periphery of the tweeter through the sound guiding chamber so that high-pitched sound is surrounded by low-pitched sound evenly, which not only implements high-and-low audio complementary, but also improves high-pitched sound quality.

Description

Double horn earplugs

Technical field

The invention relates to the technical field of earplugs, in particular to a double horn earplug with good treble effect.

Background technique

With the development and advancement of information technology, a wide range of technology products are continually entering people's daily lives. In addition, these technology products are gradually affecting and changing people's lives. Among them, earplugs are widely used in people's lives as an audio output device, and earplugs have become a necessary device for various audio playback devices.

With the continuous improvement of the quality requirements of earplugs, the basic audio output function is far from meeting the requirements of people. The sound quality of earphones has been paid more and more attention. The sound quality of earphones has become a quality evaluation of earplugs. Important reference. However, the earplugs in the prior art generally only install a speaker in the housing, which can only emit a single frequency of sound, can not achieve high and low audio complement, and the stereoscopic effect of the sound is poor; for this, now on the market Earplugs with double speakers or even multiple speakers, such as Chinese patent ZL 201010610626.6, ZL 201220014704.0 and ZL In 201120022033.8, there are two or more speakers installed in it, so that one earplug can generate high and low sound, and to some extent, high and low audio complement can be achieved. However, the above two or more speakers are set. In a receiving cavity, and the tweeter is far from the sound emitting end face of the housing, the sound of the woofer is only transmitted from one side of the tweeter, so that the bass cannot uniformly surround the high sound, thereby making the earplug The treble effect is not good.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and its main object is to provide a double horn earplug which can effectively solve the problem that the bass of the existing earphone cannot uniformly surround the treble and cause the treble effect to be poor.

In order to achieve the above object, the present invention adopts the following technical solutions:

A double horn earplug includes a casing, a woofer and a tweeter; the rear end of the casing has a receiving cavity, the front end surface of the casing is concavely provided with a cavity, and the casing is provided with a sound guiding chamber, The sound guiding chamber is connected between the accommodating cavity and the cavity, and the inner side wall of the cavity is circumferentially spaced apart from two or more axially extending ribs, and the outer wall of the tweeter between the two adjacent ribs The common enclosure is formed with a sound guiding hole, and the sound guiding hole is connected to the sound guiding chamber; the woofer is installed in the accommodating cavity and placed behind the sound guiding chamber; the tweeter is embedded in the cavity and is sandwiched between Between the plurality of ribs, the sound guiding holes are distributed around the circumference of the tweeter.

As a preferred solution, the outer casing includes a front casing and a rear cover body. The rear cover body is mounted on the rear end of the front casing and surrounds the front casing to form the receiving cavity. The cavity is disposed in front of the front cavity. The front end of the housing.

In a preferred embodiment, the front case includes a main body portion and an embedding portion for inserting into the human ear, the woofer is located in the main body portion, the concave cavity is disposed on the embedding portion, and the tweeter is located in the embedding Inside the department.

As a preferred solution, an annular card slot for engaging the earmuff is formed on the outer side surface of the joint between the insert portion and the main body portion.

In a preferred embodiment, the insert portion is mounted in a body connection with the body portion, and the rear end of the insert portion is fitted outside the front end of the main body portion.

As a preferred solution, the outer end surface of the tweeter is flush with the front end surface of the outer casing.

In a preferred embodiment, the cavity has an annular bottom plate, and a peripheral edge of the annular bottom plate is integrally formed with the ribs, and an inner end surface of the tweeter is abutted on the annular bottom plate.

As a preferred solution, the inner side wall of the cavity is evenly spaced with four aforementioned ribs, and four aforementioned sound guiding holes are formed, and the ribs and the sound guiding holes are curved in cross section.

As a preferred solution, an annular baffle is integrally formed on the front end surface of the outer casing, and the annular baffle is provided with a plurality of through holes at intervals on the circumference of the outer baffle, and the plurality of through holes are respectively opposite to the corresponding sound guiding holes. Connected.

As a preferred solution, the woofer and the tweeter are dynamic horns.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:

By placing the woofer in the accommodating cavity, the tweeter is disposed in the cavity, and the plurality of sound guiding holes are distributed around the circumference of the tweeter, so that the sound emitted by the tweeter is directly transmitted to the outside. The sound emitted by the woofer is transmitted from the plurality of sound guiding holes outside the tweeter through the sound guiding chamber, so that the bass evenly surrounds the high sound, thereby achieving high and low audio complementarity and effectively improving the high sound quality. , reached a good level.

DRAWINGS

1 is a perspective view showing the assembly of a first preferred embodiment of the present invention;

Figure 2 is an exploded view of the first preferred embodiment of the present invention;

Figure 3 is a perspective cross-sectional view of a first preferred embodiment of the present invention;

Figure 4 is a front cross-sectional view of a first preferred embodiment of the present invention;

Figure 5 is a front elevational cross-sectional view showing another angle of the first preferred embodiment of the present invention;

Figure 6 is a perspective view showing the assembly of the second preferred embodiment of the present invention;

Figure 7 is a cross-sectional view showing a second preferred embodiment of the present invention.

Description of the figure:

10, the outer casing 11, the front housing

111, main body portion 112, embedded portion

12, the rear cover body 13, the annular bottom plate

14, annular baffle 141, through hole

101, accommodating cavity 102, cavity

103, the sound guiding chamber 104, the rib

105, sound guiding hole 106, ring card slot

20, woofer 30, tweeter

detailed description

Referring to FIGS. 1 through 5, there is shown a specific structure of a first preferred embodiment of the present invention, including a housing 10, a woofer 20, and a tweeter 30.

The inside of the rear end of the outer casing 10 has a receiving cavity 101. The front end surface of the outer casing 10 is recessed with a cavity 102. The outer casing 10 is provided with a sound guiding chamber 103. The sound guiding chamber 103 communicates with the receiving cavity 101. Between the cavity 102 and the cavity 102, the front end opening of the sound guiding chamber 103 is gradually enlarged from the back to the front, the rear end opening of the sound guiding chamber 103 is gradually reduced from the back to the front, and the inner side wall of the cavity 102 is circumferentially spaced apart. Two or more axially extending ribs 104 are disposed. The adjacent two ribs 104 are coaxially formed with the outer wall of the tweeter 30 to form a sound guiding hole 105. The sound guiding hole 105 is connected to the sound guiding chamber 103. In the present embodiment, the inner side wall of the cavity 102 is evenly spaced with four of the aforementioned ribs 104, and four of the aforementioned sound guiding holes 105 are formed, and each of the ribs 104 and each of the sound guiding holes 105 The cross section is curved. The woofer 20 is a moving horn, which has a good sound quality. The woofer 20 has a diameter of 5.5 mm. The woofer 20 is mounted in the accommodating cavity 101 and placed behind the sound guiding chamber 103. The tweeter The horn 30 is also a sound quality. The horn 30 has a diameter of 8 mm. The horn 30 is embedded in the cavity 102 and interposed between the plurality of ribs 104. The sound hole 105 is distributed around the circumference of the tweeter 30; the tweeter 30, the sound guiding chamber 103, and the woofer 20 are sequentially disposed coaxially from the rear to the rear.

Specifically, the outer casing 10 includes a front casing 11 and a rear cover body 12, and the rear cover body 12 is mounted on the rear end of the front casing 11 and surrounds the front casing 11 to form the accommodating cavity 101. The cavity 102 is disposed at the front end of the front casing 11; in the embodiment, the front casing 11 includes a main body portion 111 and an embedded portion 112 for inserting into the human ear, and the woofer 20 is located in the main body portion 111. The concave cavity 102 is disposed on the embedding portion 112, and the tweeter 30 is located in the embedding portion 112; and the outer surface of the joint between the embedding portion 112 and the main body portion 111 is formed with a ring for engaging the earmuffs. In the present embodiment, the insertion portion 112 is connected to the main body portion 111 in a separate manner. The rear end of the insertion portion 112 is fitted outside the front end of the main body portion 111 to form the annular card slot 106. 112 and the main body portion 111 may also be integrally formed and connected, and are not limited thereto.

The outer end surface of the tweeter 30 is flush with the front end surface of the outer casing 10 to more closely contact the human ear; and the cavity 102 has an annular bottom plate 13 therein, and the peripheral edge of the annular bottom plate 13 is integrally formed with the ribs 104. Connected, the inner end surface of the tweeter 30 abuts against the annular bottom plate 13.

At the time of assembly, the tweeter 30 is fitted into the cavity 102, and the woofer 20 is fitted into the rear end opening of the front case 11, and then the rear cover 12 is attached to the rear end of the front case.

During use, as shown in FIG. 4, the sound emitted by the tweeter 30 is directly transmitted outward, and the sound emitted by the woofer 20 is transmitted out from the plurality of sound guiding holes 105 on the periphery of the tweeter 30 through the sound guiding chamber 103. In order to make the bass evenly surround the high pitch, a large number of experimental tests have proved that the high-pitched effect of the present invention reaches an excellent level.

Referring to FIG. 6 and FIG. 7 , a specific structure of the second preferred embodiment of the present invention is shown. The specific structure of the present embodiment is substantially the same as the specific structure of the foregoing first preferred embodiment, and is different. Is:

An annular baffle 14 is integrally formed on the front end surface of the outer casing 10. The annular baffle 14 is provided to increase the adhesive area of the eardrum, and the eardrum is more firmly adhered. The inner diameter of the annular baffle 14 is smaller than the outer diameter of the tweeter 30. In order to prevent the tweeter 30 from falling out of the outer casing 10, the annular baffle 14 is provided with a plurality of through holes 141 at intervals in the circumference of the annular baffle 14, and the plurality of through holes 141 are respectively in direct communication with the corresponding sound guiding holes 105. In the embodiment, the through holes 141 are four, and the four through holes 141 are respectively in direct communication with the foregoing four sound guiding holes 105, and each of the through holes 141 is curved. During use, the sound emitted by the tweeter 30 is transmitted outward through the through hole 141 and the central hole of the annular baffle 14, and the sound of the woofer 20 sequentially passes through the sound guiding chamber 103 and a plurality of sound guides around the tweeter 30. The hole 105 is finally transmitted outward through the through hole 141.

The design of the present invention is focused on: placing the woofer in the cavity by placing the woofer in the cavity, and distributing the plurality of sound holes around the circumference of the tweeter, so that the treble The sound from the horn is directly transmitted outward. The sound from the woofer passes through the sound guiding room and is transmitted out from the plurality of sound guiding holes outside the tweeter, so that the bass evenly surrounds the high sound, not only achieving high and low audio complementarity. It also effectively improves the quality of the high-pitched sound and achieves an excellent level.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still It is within the scope of the technical solution of the present invention.

Claims

A double-horn type earplug, comprising: a casing, a woofer, and a tweeter; the rear end of the casing has a receiving cavity, and a front end surface of the casing is recessed with a cavity, and the casing is disposed There is a sound guiding chamber, the sound guiding chamber is connected between the accommodating cavity and the cavity, and the inner side wall of the cavity is circumferentially spaced apart from two or more axially extending ribs, and adjacent ribs are adjacent And the outer wall of the tweeter is formed with a sound guiding hole, and the sound guiding hole is connected with the sound guiding chamber; the woofer is installed in the accommodating cavity and placed behind the sound guiding chamber; the tweeter is embedded in the concave surface The cavity is interposed between the plurality of ribs, and the sound guiding holes are distributed around the circumference of the tweeter.

2. The double horn earplug according to claim 1, wherein the outer casing comprises a front casing and a rear cover, the rear cover being mounted to the rear end of the front casing and surrounding with the front casing The accommodating cavity is formed, and the cavity is disposed at a front end of the front case.

3. The dual horn earplug of claim 2, wherein the front housing includes a main body portion and an insert portion for insertion into a human body ear, the woofer being located in the main body portion, the cavity It is disposed on the embedded portion, and the tweeter is located in the embedded portion.

The double horn earplug according to claim 3, wherein an annular card slot for engaging the earmuff is formed on an outer side surface of the joint between the insertion portion and the main body portion.

The double horn earplug according to claim 3, wherein the insertion portion is connected to the main body portion in a body shape, and the rear end of the insertion portion is fitted outside the front end of the main body portion.

The double horn earplug according to claim 1, wherein the outer end surface of the tweeter is flush with the front end surface of the outer casing.

The double horn earplug according to claim 1, wherein the concave cavity has an annular bottom plate, and a peripheral edge of the annular bottom plate is integrally formed with the ribs, and an inner end surface of the tweeter is opposite to the On the annular bottom plate.

The double-horn type earplug according to claim 1, wherein four inner ribs are evenly spaced on the inner side wall of the cavity, and four aforementioned sound guiding holes are formed, the rib and the guiding sound. The cross section of the hole is curved.

The double horn earplug according to claim 1, wherein an annular baffle is integrally formed on the front end surface of the outer casing, and the annular baffle is provided with a plurality of through holes at intervals on the circumference of the annular baffle. The through holes are respectively in direct communication with the corresponding sound guiding holes.

10. The dual horn earplug of claim 1 wherein said woofer and tweeter are moving horns.