WO2020199132A1

WO2020199132A1 - Horn loudspeaker

Info

Publication number: WO2020199132A1
Application number: PCT/CN2019/081050
Authority: WO
Inventors: 周权; 张文华
Original assignee: 深圳市鲁粤盛科技有限公司
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-10-08
Also published as: CN111183654A; CN111183654B

Abstract

The present invention relates to a horn loudspeaker, comprising: passive radiators, a horn and a loudspeaker casing, wherein the passive radiators and the horn are both provided on the loudspeaker casing; the passive radiators comprise a first passive radiator and a second passive radiator, and the first passive radiator, the second passive radiator and the horn are sealed, connected one to the other, and form an integrated body; the loudspeaker casing is assembled by clamping a loudspeaker upper cover and a loudspeaker lower cover; the first passive radiator is provided on the loudspeaker upper cover, and the second passive radiator is provided on the loudspeaker lower cover; and the first passive radiator and the second passive radiator are assembled symmetrically up and down. The first passive radiator and the second passive radiator in the horn loudspeaker of the present invention are symmetrically assembled to improve the design concept of the frequency response of the low frequency, and may effectively extend the low frequency bandwidth and sound range of the loudspeaker.

Description

Speaker sound

Technical field

The invention relates to the field of audio equipment, in particular to a speaker sound.

Background technique

Although my country's consumer electronics started late, it has developed rapidly, especially in home appliances. The market demand is increasing day by day. Traditional TV/multimedia/desktop/portable laptop speakers are limited by space. The low-frequency texture is weak and the distortion is large, and it is impossible to create a small, broad, and powerful sound effect in the limited speaker space.

Summary of the invention

The technical problem to be solved by the present invention is to provide a loudspeaker sound, which strengthens the overall airtightness of the loudspeaker box, and effectively solves the airflow sound emitted from the sound guide tube when the traditional sound guide tube loudspeaker box works.

In order to solve the above technical problems, the present invention provides a speaker speaker, which is characterized by comprising: a passive membrane, a speaker, and a speaker housing, the passive diaphragm and the speaker are both provided on the speaker housing; The passive membrane includes a first passive membrane and a second passive membrane. The first passive membrane, the second passive membrane, and the speaker are hermetically connected to form an integrated body; the speaker housing is composed of a speaker cover and a speaker The lower cover is assembled, the first passive membrane is arranged on the upper speaker cover, the second passive membrane is arranged on the lower speaker cover, the first passive membrane, the second passive membrane Symmetrical assembly from top to bottom.

Preferably, the speaker shell is sealedly connected by the upper speaker cover and the lower speaker cover through the first card reed, the second card reed and the third card reed.

Preferably, the first passive membrane and the second passive membrane are arranged in parallel up and down.

Preferably, the first passive membrane and the second passive membrane are both composed of a soft rubber layer, a reinforcing rib and a counterweight plate, the soft rubber layer is connected with the reinforcing rib to form a frame structure, and the counterweight The board is located inside the frame structure and is integrally formed with the frame structure.

Preferably, the counterweight plate and the frame structure are fixedly connected and integrally formed by a first groove and a second groove provided on the soft rubber layer.

Preferably, the diameters of the first groove and the second groove are both 1-3mm, the length of the weight plate is 24-25mm, the width is 6-7mm, and the thickness is 0.6-0.7mm, and the frame The outer frame of the structure has a length of 29-30 mm and a width of 11-12 mm, and the inner frame of the frame structure has a length of 25-26 mm and a width of 6-8 mm.

Preferably, the soft rubber layer and the reinforcing rib are made of rubber.

Preferably, 8-12 reinforcing ribs are provided on the first passive membrane and the second passive membrane, and the width of the reinforcing ribs is 0.5-1.5 mm.

Preferably, the soft rubber layer includes a first planar substrate extending outward and a plurality of arc-shaped skeletons forming the frame structure, and the inside of the arc-shaped skeleton is a second planar substrate.

Preferably, the arc-shaped skeleton is arranged in a direction toward the inside of the speaker.

Preferably, the length of the first passive film and the second passive film is 30-40 mm, the width is 15-20 mm, and the height is 2-2.5 mm.

Preferably, the horn is composed of a cone-shaped diaphragm, a centering support piece and a magnet ring.

Preferably, the horn has a diameter of 30-35mm and a height of 11-12mm.

Compared with the prior art, the beneficial effect of the present invention is that: the present invention is suitable for people who require improvement of traditional TV, multimedia, desktop, portable notebook computer speakers are limited by space, low-frequency texture is weak, distortion is large The shortcomings are developed. In order to improve the speakers of televisions, multimedia, desktops, and portable notebook computers, in the limited speaker space, a small, broad, "sound" and shocking sound effect is produced, which emits deeper sound quality and richer emotions; with more fullness Low-frequency texture, lower distortion; clearer human voice, crisp high-frequency; strong three-dimensional feeling.

Description of the drawings

The present invention will be further described in detail below with reference to the drawings and specific embodiments.

Figure 1 is a schematic diagram of the overall structure of the audio speaker of the present invention;

Figure 2 is a schematic diagram of a partial structure of the acoustic speaker of the present invention;

Figure 3 is a schematic diagram of a partial structure of the acoustic speaker of the present invention;

Figure 4 is a schematic diagram of a partial structure of the acoustic horn of the present invention;

Figure 5 is a schematic diagram of a partial structure of the acoustic speaker of the present invention;

Figure 6 is a partial structural diagram of the acoustic horn of the present invention;

Figure 7 is a partial structural diagram of the acoustic horn of the present invention;

Fig. 8 is a comparison diagram of frequency response of the acoustic speaker of the present invention;

Fig. 9 is a comparison diagram of harmonic distortion of the acoustic speaker of the present invention;

Fig. 10 is a comparison diagram of impedance curves of the acoustic speaker of the present invention.

In the picture: 1 is the passive membrane, 2 is the horn, 3 is the sound shell, 301 is the upper sound cover, 302 is the lower sound cover, 4 is the soft rubber layer, 5 is the reinforcing rib, 6 is the counterweight plate, 7 is the arc Shaped skeleton, 8 is the first groove, 9 is the second groove, 10 is the planar substrate, 101 is the first planar substrate, 102 is the second planar substrate, 201 is the cone-shaped diaphragm, and 202 is the centering support piece, 203 is a magnet ring.

detailed description

In the description of the invention, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by “bottom”, “inner”, “outer”, etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the pointed device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the invention, unless otherwise specified, "plurality" means two or more. In addition, the term "including" and any variations thereof is intended to cover non-exclusive inclusion.

It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; It can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be understood in specific situations.

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Please refer to Figure 1 to Figure 7, as shown in the figure, a speaker speaker characterized by comprising: a passive membrane 1, a speaker 2 and a speaker housing 3, the passive membrane 1 and the speaker 2 are both installed in the The acoustic housing 3; the passive membrane 1 includes a first passive membrane and a second passive membrane, the first passive membrane, the second passive membrane and the speaker 2 are hermetically connected and integrated; The speaker housing is assembled by a speaker upper cover 301 and a speaker lower cover 302, the first passive membrane is arranged on the speaker upper cover 301, and the second passive membrane is arranged on the speaker lower cover. 302. The first passive membrane and the second passive membrane are assembled symmetrically up and down.

In a specific implementation process, the first passive membrane and the second passive membrane are arranged in parallel up and down. In order to make the upper cover and the lower cover of the audio shell can be fixed and completely closed, as shown in Fig. 1, the audio shell 3 is set in an L shape, so that when the speaker 2 is working to emit sound, the movement of the speaker diaphragm will make the audio shell The air in 3 is compressed and expanded, and under the action of air pressure changes, the first passive membrane and the second passive membrane vibrate. In general, in the process of sound transmission in the air, the farther the distance is, the smaller the sound heard. The speaker speaker of the present invention is set in an L shape, and the speaker speaker of the present invention has an interior The space is fully utilized, so that the internal space of the speaker speaker of the present invention is smaller, so that the airflow generated by the sound of the speaker of the present invention has an increased impact on the passive membrane, and the passive membrane is set up as a symmetrical first passive The passive double membrane of the membrane and the second passive membrane makes full use of the airflow when the first passive membrane and the second passive membrane vibrate up and down, so as to produce a small and large sound, a shocking effect, and a higher sound quality restoration effect . In addition, a first card reed and a second card reed are arranged on both sides of the outer end of the longer part of the audio shell, and a third card reed is arranged inside the lower end of the shorter part of the audio shell. The L-shaped audio shell is sealed by the three card reeds. Fixing. In this way, the upper and lower covers of the sound housing are sealed and fixed, and the overall airtightness of the sound box is strengthened. It effectively solves the traditional sound guide sound box. The airflow sound emitted from the sound guide tube during operation is also In line with the design of this L-shaped speaker sound.

As shown in Figures 2 and 4, in a specific implementation process, the first passive membrane and the second passive membrane are both composed of a soft rubber layer 4, a reinforcing rib 5 and a weight plate 6. The soft rubber Layer 4 is connected to said reinforcing rib 5 to form a frame structure, said weight plate 6 is located inside said frame structure and is integrally formed with said frame structure, said weight plate 6 and said frame structure pass through said The first groove 8 and the second groove 9 provided on the soft rubber layer 4 are fixedly connected and integrally formed. In order to make the passive membrane 1 vibrate up and down for the first time, the subsequent vibration amplitude of the passive membrane can be utilized to the maximum extent, a counterweight plate is arranged inside the frame structure, which increases the weight of the passive membrane, thereby making The passive membrane reduces the air resistance during the up and down vibration process, which reduces the rapid attenuation of sound waves to a certain extent. In order to integrally form the weight plate with the frame structure, a first groove 8 and a second groove 9 are provided on the soft rubber layer 4, and the weight plate 6 passes through the first groove 8 and the second groove 8 The fixed connection of the two grooves 9 is to prevent the excessive connection of the counterweight plate 6 and the passive membrane 1 from causing the vibration amplitude of the passive membrane 1 to be too small, which indirectly causes the sound effect of the passive membrane to fail to achieve a shocking effect.

In a more specific implementation process, the diameters of the first groove 8 and the second groove 9 are both 1-3 mm, and the weight plate 6 has a length of 24-25 mm, a width of 6-7 mm, and a thickness of 0.6-0.7, the outer frame of the frame structure has a length of 29-30 mm and a width of 11-12 mm, and the inner frame of the frame structure has a length of 25-26 mm and a width of 6-8 mm. Figures 3 and 5 are a specific embodiment of the present invention, in which the first groove 8 and the second groove 9 are both circular grooves with a diameter of 2mm; the weight plate 6 is a rectangular parallelepiped, and the weight plate 6 The length of the frame structure is 24.40mm, the width is 6.4mm, and the thickness is 0.65mm. The outer frame of the frame structure has a length of 29.50mm and a width of 11.50mm. The inner frame of the frame structure has a length of 25.25mm and a width of 7mm. .

In a more specific implementation process, the soft rubber layer 4 and the reinforcing ribs 5 are made of rubber. Rubber itself is a highly elastic polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under a small external force. After removing the external force, it can be restored to its original state. The rubber material can be rubber, silicone, or thermoplastic. Polyurethane elastic or thermoplastic elastomer, etc. Both the reinforcing rib 5 and the soft rubber layer 4 are made of rubber material in order to make the passive film 1 only need to be manufactured by a mold during the manufacturing process, so that the manufacturing process of the passive film 1 is more optimized.

In a more specific implementation process, 8-12 reinforcing ribs are provided on the first passive membrane and the second passive membrane, and the width of the reinforcing ribs 5 is 0.5-1.5 mm. In the process of designing the passive membrane, it may happen that the overhanging surface of the passive membrane is too large or the span is too large. In this case, the connection surface of the passive membrane 1 itself can withstand the load is limited, so reinforcing ribs are added to the passive membrane. , So that the passive membrane can bear more load after adding the connection surface. FIG. 3 is a specific embodiment of the present invention, in which 10 reinforcing ribs are provided on both the first passive membrane and the second passive membrane, and 3 reinforcing ribs are provided on both the upper and lower frames of the passive membrane 1. Ribs, the spacing between the reinforcement ribs of the upper frame of the passive membrane is 7.50mm, and the spacing between the reinforcement ribs of the lower frame of the passive membrane is also 7.50mm; two reinforcements are provided on the left and right frames of the passive membrane Ribs, the spacing between the reinforcing ribs of the left frame of the passive membrane is 2.50mm, and the spacing between the reinforcing ribs of the right frame of the passive membrane is also 2.50mm.

In a more specific implementation process, the soft rubber layer 4 includes a first planar substrate 101 extending outward and a plurality of arc-shaped skeletons forming the frame structure, and the inside of the arc-shaped skeleton is a second planar substrate 102. As shown in Figures 3 and 4, the arc-shaped skeleton is set into an R-ring shape, and the arc-shaped skeleton is engraved with patterns, which not only solves the problem that the four corners of the frame structure can be connected, but also makes the passive membrane In the vibration process, it will not be excessively tight, which increases the amplitude of the passive membrane vibration.

In a more specific implementation process, with reference to FIGS. 1 and 4, the arc-shaped skeleton is arranged in a direction toward the inside of the speaker, so that the second substrate 102 and the plurality of arc-shaped skeletons of the frame structure form an avoidance position, thereby When the airflow in the audio shell 3 is compressed and expanded, it can be buffered to enter the avoidance position, so that the vibration of the passive diaphragm is more balanced. At the same time, adding an engraved pattern on the arc frame is more conducive to the passive membrane being easier to stretch during the vibration process, and it is easier to vibrate into the middle, because the arc frame without engraving will make the passive membrane only vibrate The vibration is completely dependent on the elasticity of the rubber, so that the tension state occurs during the vibration process, which makes the passive membrane more easily damaged.

In a specific implementation process, the length of the first passive film and the second passive film is 30-40 mm, the width is 15-20 mm, and the height is 2-2.5 mm. Fig. 5 is a specific embodiment of the present invention, wherein the length of the first passive film and the second passive film are both 37 mm, the width is 19 mm, and the height is both 2.25 mm.

In a specific implementation process, as shown in Figs. 6 and 7, the diameter of the horn is 30-35mm and the height is 11-12mm. FIG. 7 is a specific embodiment of the present invention, wherein the horn 2 is an electric cone-shaped paper cone speaker, and the horn 2 is composed of a cone diaphragm 201, a centering support piece 202 and a magnet ring 203, The diameter of the speaker 2 is 32.0mm, the diameter error is within 0.15mm, the height of the speaker 2 is 11.4mm, the height error is within 0.25mm, the parameter of the center value of fo (a scale in music) is 140Hz, and the magnet at the bottom of the speaker The distance between the ring 203 and the cone diaphragm 201 of the horn is 6.3 mm, and the thickness of the centering support piece 202 of the horn is set to 2.0 mm.

Fig. 8 is a comparison diagram of the frequency response of the acoustic horn of the present invention. The solid line in the figure corresponds to the traditional sound guide hole acoustics, and the dashed line in the figure corresponds to the passive double-diaphragm acoustics, which is the horn acoustics provided in the present invention. It can be seen from Fig. 8 that the frequency response curve of the speaker speaker of the present invention at 85Hz～250Hz is smoother than the frequency response curve of the traditional pilot hole speaker. In addition, in the range of 85Hz～250Hz, the speaker speaker of the present invention The average sound pressure increased by 6dB, and it can be seen in Fig. 8 that the average sound pressure increase in the range of 85Hz～250Hz of the traditional pilot-hole sound is smaller than that of the speaker sound of the present invention. The increase in average sound pressure means that the sound system can be within the range allowed by the amplitude. From these two points, it can be seen that the distortion degree of the speaker sound of the present invention at 85Hz～250Hz is smaller than that of the traditional guide hole sound.

Fig. 9 is a comparison diagram of harmonic distortion of the acoustic speaker of the present invention. The solid line in the figure corresponds to the traditional sound guide hole acoustics, and the dashed line in the figure corresponds to the passive double-diaphragm acoustics, which is the speaker acoustics provided in the present invention. In physics, we call different vibrations whose frequencies are multiples of each other's "harmonics". Harmonic distortion is actually a concept derived through mathematics or statistics. Because its calculation method must rely on the original signal, it In fact, it does not exist alone. General harmonic distortion is not as terrible as we think. Experiments have shown that ordinary people can only feel bad for more than 3% harmonic distortion. It can be seen from Figure 9 that the harmonic distortion of the speaker of the present invention is The distortion rates in the range of 300-20000 Hz are all lower than 3%, and it can be seen that the speaker sound of the present invention meets the relevant technical requirements in terms of harmonic distortion.

Figure 10 is a comparison diagram of the impedance curves of the acoustic speakers of the present invention. The solid line in the figure corresponds to the traditional sound guide hole acoustics, and the dashed line in the figure corresponds to the passive double-diaphragm acoustics, which is the speaker acoustics provided in the present invention. The impedance curve refers to The curve of the impedance of the loudspeaker changing with frequency. As the frequency changes, the impedance curve also changes. The impedance of the speaker is not a constant value. The change of an impedance curve shows that the impedance of the speaker is not a constant. The curve changes with frequency. The impedance at the lowest point after the peak, we call it the rated impedance of the speaker. The frequency corresponding to the impedance of the lowest point reached after the first peak is usually called the lowest resonance frequency. It can be seen from Fig. 10 that the lowest resonant frequency value of the speaker speaker of the present invention is 95 Hz. Compared with the traditional pilot hole speaker, the difference is not much different, and the relevant technical requirements are met.

In summary, the present invention discloses a speaker speaker, including: a passive membrane 1, a speaker 2 and a speaker housing 3. The passive diaphragm 1 and the speaker 2 are both arranged on the speaker housing 3; The passive membrane 1 includes a first passive membrane and a second passive membrane, and the first passive membrane, the second passive membrane, and the speaker 2 are hermetically connected and formed as a whole; The upper cover 301 and the lower speaker cover 302 are assembled together. The first passive film and the second passive film are respectively arranged on the upper speaker cover 301 and the lower speaker cover 302. The first passive film, the The second passive membrane is assembled symmetrically from top to bottom. The present invention is developed based on customer requirements to improve the speakers of traditional TV/multimedia/desktop/portable notebook computers. When the speakers are limited by space, the low-frequency texture is weak and the distortion is large. In order to improve the speakers of TV/multimedia/desktop/portable notebook computers, in the limited speaker space, a small and broad, "sound" dynamic and shocking sound effect is produced, which emits deeper sound quality and richer emotion; Low/fuller low-frequency texture, lower distortion; clearer vocals, crisp high-frequency; strong three-dimensional feeling.

It should be understood that the application of the present utility model is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made based on the above description. All these improvements and transformations should be protected by the appended claims of the utility model. range.

Claims

A speaker speaker, characterized by comprising: a passive membrane, a speaker, and a speaker shell, the passive membrane and the speaker are both provided on the speaker shell;

The passive film includes a first passive film and a second passive film, and the first passive film, the second passive film, and the horn are hermetically connected and integrated;

The speaker housing is formed by clamping an upper speaker cover and a lower speaker cover, the first passive membrane is arranged on the upper speaker cover, the second passive membrane is arranged on the lower speaker cover, and the The first passive membrane and the second passive membrane are assembled symmetrically up and down.
The speaker speaker according to claim 1, wherein the first passive membrane and the second passive membrane are arranged in parallel up and down.
The speaker speaker according to claim 1, wherein the first passive membrane and the second passive membrane are both composed of a soft rubber layer, a reinforcing rib and a counterweight plate, and the soft rubber layer passes through with the The reinforcing ribs are connected to form a frame structure, and the counterweight plate is located inside the frame structure and is integrally formed with the frame structure.
The speaker speaker according to claim 3, wherein the counterweight plate and the frame structure are fixedly connected and integrally formed by a first groove and a second groove provided on the soft rubber layer.
The speaker speaker of claim 3, wherein the soft rubber layer and the reinforcing rib are made of rubber.
The speaker speaker according to claim 3, wherein 8-12 reinforcing ribs are provided on the first passive membrane and the second passive membrane, and the width of the reinforcing ribs is 0.5-1.5 mm.
The speaker speaker according to claim 3, wherein the soft rubber layer comprises a first planar substrate extending outward and a plurality of arc-shaped skeletons forming the frame structure, and the inside of the arc-shaped skeleton is a second Plane substrate.
The speaker speaker according to claim 7, wherein the arc-shaped skeleton is arranged in a direction toward the inside of the speaker.
The speaker speaker of claim 1, wherein the length of the first passive film and the second passive film is 30-40 mm, the width is 15-20 mm, and the height is 2-2.5 mm.
The speaker speaker according to claim 1, wherein the diameter of the speaker is 30-35mm and the height is 11-12mm.