TWI236856B - Loudspeaker enclosure with high airflow efficiency - Google Patents

Abstract

The present invention relates to a loudspeaker enclosure with high airflow efficiency. The loudspeaker enclosure has a hollow shell and a lid. An opening is set in front of the hollow shell. Two corresponding sidewalls of the hollow shell extend to a backside wall of the hollow shell respectively from a periphery of the opening in a convergent manner with a wavy shape. The other two corresponding sidewalls of the hollow shell extend in parallel to the backside wall respectively from the periphery of the opening. The backside wall has a wall with backward convergence. The size of the lid could fix the periphery of the opening. At least one woofer and a bass reflex hole are disposed on the lid. When a drumhead of the woofer generates a vibration, a gas within the hollow shell is guided and gathered to an inside of the backside wall which corresponds to a position of the bass reflex hole through the two sidewalls with the wavy shape and the backside wall with backward convergence. The gas is then discharged to an outside via the bass reflex hole. Therefore, the compressed gas within the hollow shell and the vibration of the drumhead influenced by the negative pressure may not only be reduced substantially, but may be able to improve bass quality and volume for the woofer.

Description

1236856 V. Description of the invention (1) The technical field to which the invention belongs: The present invention is a sigma-sigma speaker structure, especially a sigma-sigma speaker structure. The hollow housing has a wavy design with two corresponding side walls and tapered rearward. One of the back side walls is designed to use these structural designs to reduce the compressed gas and negative pressure generated by the vibration of the horn drum membrane, which will negatively affect the vibration of the prostitute film, so as to effectively enhance the bass. Eight bass quality and volume. Prior technology:

According to FIG. 1, the conventional sigma-speaker structure 10 ′ includes a hollow casing 11 and a cover 12. An opening 1 1 0 is provided on the front side of the hollow casing 11. The corresponding side wall 1 1 1 of the empty shell 11 1 is a straight line extending from the opening 110 peripheral edge to the back side wall 11 2 in a tapered manner. The other two corresponding side walls 11 3 of the hollow shell 11 are They are respectively parallel and rearwardly extended from the periphery of the opening 110 to the back side wall 112, and a mounting frame 16 can be connected thereto by pivoting, so that the hollow shell η can be installed and fixed in an appropriate position. The hollow shell Inside the body 11 is located inside the back side wall 11 2 and is provided with a sound source control circuit 13 for receiving a sound source signal from a sound amplifier (not shown) and controlling the sound source; The cover body 2 is provided with a bass thorn team 1 20, a tweeter 21, and at least one bass reflection hole 122. The size of the cover body 12 can be fixed to the periphery of the opening 1 10 In this way, the high-frequency and low-frequency sound source signals generated by the sound source control circuit 3 can be transmitted separately. Up to the woofer 120 and the tweeter 1 21, the eardrum vibrations of the respective systems <1 2 0, 1 2 1 are excited, and high-frequency and low-frequency sound effects are produced, respectively. In this kind of traditional sigma octa-speaker structure 10, please refer to Figure 1.

Page 5 1236856 V. Description of the invention (2) shows that the cover 12 and the sound source control circuit 13 are generally placed with a damping material made of non-woven or foam 丨 4 to use the damping material 丨4 Absorb the amplitude of the bass to avoid low-frequency resonance on the signal line 131 and power circuit 1 32 on the sound source control circuit 丨 3, which will cause bad interference to the bass sound effect, I can be added on the outside of the cover 1 2 The dust cover 15 is used to protect each of the speakers 120 and 121 and prevent dust and other debris from floating into the speaker structure 10. The person who needs special attention here 'is in this traditional spur spur sigma eight-speaker structure 1 0, as shown in FIG. 2' the hollow casing 1 1 bis corresponding to the side wall 111 are respectively formed by the opening 11 0 The perimeter is straight and extends backwards in a tapered manner to its back side wall 11 2 ′. Its main purpose is in the bass flavor] σ eight 1 2 0 of the eardrum 1 2 0 1 generates instant vibrations, and inside the hollow casing 11 When the gas exerts a backward pushing force (when the eardrum 1201 is displaced backward), the gas in the hollow shell η can be made to shrink along the two side walls 1 1 1 designed in a straight line and backward. Flow, this phenomenon 'In an ideal state, it can be known from the following hydrodynamic formula: ΑΛ = Α2ν2 ΡΛ = ρ2ν2, where Aι and α2 are used to indicate the hollow casing 11 adjacent to the opening 110 and adjacent to the opening 110, respectively. The cross-sectional area on the inner side of the back side wall 11 2; νι, which are used to indicate the bass system ° 8 1 2 0 of the eardrum 1 2 0 1 when the vibration occurs' in the hollow casing ι adjacent to the opening 110 and adjacent to the opening Gas velocity of the back wall 112; P and P2 are used to indicate the woofer 1 2 〇The eardrum is vibrated for a moment 2 The inside of the hollow casing 11 is adjacent to the opening 110 and adjacent to the opening

Page 6 1236856 V. Description of the invention (3) '^ ~ The gas pressure inside the back side wall 112, because the two sides of the hollow shell π correspond to the side wall 111 are straight from the opening 110. The contraction method extends to its back side wall 1 12. The cross-sectional area Aι of the hollow casing 11 adjacent to the opening 110 is much larger than the cross-sectional area of the hollow casing 11 adjacent to the back sidewall 112. A? 'According to the previous formula, after the vibration of the woofer 丨 2 〇 tympanum 1 2 〇 1' The velocity of gas in the hollow casing i 丨 adjacent to the back side wall 丨 2 will be much larger than the hollow The velocity V! Of the gas in the casing 11 adjacent to the opening 110, so that the gas adjacent to the inside of the back side wall 12 has a higher kinetic energy. The two linearly tapered side walls 丨 n can generate a gas with a higher kinetic energy near the inner side of the back side wall 11 2 when the tympanum 1 2 0 1 of the woofer 丨 2 0 vibrates. Make the remaining σ eight speakers produce a strong low-frequency co-vibration effect. However, when the gas flowing backward along the two sides 璧 111 that recedes in a straight line and hits the back side wall 丨 2, the gas is compressed. Due to its characteristics, it will instantly bounce back towards the direction of the opening 11 o. Therefore, in order to avoid the gas that bounces back instantaneously, it will negatively affect the vibration of the bass drum π 8 1 2 0 tympanum 1 2 0 1. &lt; In the speaker structure 10, as shown in FIG. 3, at least one bass reflection hole 1 2 2 will be designed on the cover 12 (or on the back side wall 11 2) to smoothly rebound. The returned gas is emitted to the outside through the bass reflection hole 1 2 2. However, in fact, since the two corresponding side walls 11 1 of the hollow casing 11 are respectively extended linearly and backwardly from the opening 1 10 peripheral edge, and the other two corresponding side walls 11 3 are respectively formed by the The periphery of the opening 11 〇 extends parallel to the rear, that is, the corresponding side walls 11 Γ and 1 1 3 extend straight back to the back side wall 11 2, so the gas rebounded instantly will follow the original path.

J236856 _ V. Description of the invention (4) Evenly bounced to the inside of the cover 12, only a small part of it is reflected out through the bass reflection hole 1 2 2 and the rest is not only unnecessary for the cover 12 The vibration of the bass and the tympanic membrane of the bass 1 2 0 1 negatively affects the phenomenon of bass distortion, which makes the traditional bass speaker structure in the quality and quantity of bass output is always difficult breakthrough. SUMMARY OF THE INVENTION In view of the foregoing tradition. Many Insufficient Designs of the Eight Speaker Structure Design 'The inventor has developed one of the eighth speaker structure with high airflow efficiency of the present invention based on many years of practical experience and research experience. One object of the present invention is to design the corresponding side wall of one of the hollow shells of one of the loudspeakers and speakers to be wavyly extended from the opening periphery to the back side wall in a tapered manner. The two side walls, which are designed to be wavy and tapered backward, make the ratio between the cross-sectional area adjacent to the opening and the cross-sectional area adjacent to the back side wall large, so as to vibrate and oscillate the tympanic membrane of the bass. When a backward pushing force is applied to the gas in the hollow shell, the gas in the hollow shell can be caused to rapidly flow backward along the two side walls designed to be wavy and tapered backward, and adjacent to the The inner side of the back side wall generates an airflow with higher kinetic energy, which makes the speaker &apos; s loudspeaker produce a stronger low-frequency co-vibration effect, and the gas that bounces back toward the opening when it hits the back side wall, because the two side walls present The wavy design gradually shrinks backwards, and bounces back to the position of at least one bass reflection hole designed on the cover, and smoothly bounces the gas that bounces back through the bass reflection hole to the outside, making the hollow shell Inside Gas flow more smoothly, so as to effectively reduce the secondary sound waves ^

1236856 V. Description of the invention (5) Probability of shooting. Another object of the present invention is to design the tie wall by a design in which the flat peripheral side wall of the opening is adjacent to the oblique wall surface adjacent to the other two corresponding side walls and each of the other two correspondingly tapered backwards. Gas application-smoothly guided to the position of the back. In this way, when the gases bounce back, they can bounce more concentratedly through the bass reflection hole and smoothly reduce the amplitude of the compressed gas in the hollow shell. The tympanic membrane vibration causes a negative effect. With another object of the present invention, the rear edge of the bass reflection hole in the hollow casing can be sequentially passed through the two wavy-shaped back side walls and passed through the hollow casing. Due to the negative pressure in the body, the hole 'smoothly introduces the hollow shell, which greatly reduces the negative impact of the compressed gas in the hollow shell, and can therefore effectively stiffen the other side of the hollow shell. Extending to the back side wall, the position of the back is connected with an arc or inclined side wall, respectively, and when the drum wall of the back side wall is oscillated, the gas is caused by the force of the backward push. The inside of the side wall corresponds to the Reflection sound hole of the back side wall and across to the direction of opening to the position of the bass reflex apertures to bounce back through the gas is emitted to the outside, a large negative effect on the body and a bass σ barbed Α reduce the distortion of the bass phenomenon. When the tympanic membrane of the bass beta 8 vibrates, the corresponding side wall and the compressed gas designed to be tapered backwards are smoothly guided to the bass reflection hole and emitted outward, or the outside air is passed through the bass reflection body. This structural design can not only cause the body and negative pressure to cause the eardrum to vibrate, but also improve the bass quality and sound of the bass system.

Implementation content:

1236856 V. Description of the invention (6) The present invention is a remaining sigma-eight speaker structure with high airflow efficiency, as shown in FIG. 4, which mainly includes a hollow casing 21 and a cover 22 'The hollow casing 2 1 An opening 2 1 0 is provided on the front side, and the corresponding side wall 2 11 of the hollow casing 2 1 2 extends from the peripheral edge of the opening 2 10 to the back side wall 2 1 2 in a wavy manner in a tapered manner. The other two corresponding side walls 2 1 3 of the hollow casing 2 1 respectively extend from the peripheral edge of the opening 2 10 parallel to the back side wall 2 1 2, and the back side wall 2 1 2 has a wall surface that is tapered backward. Each of the other two corresponding side walls 2 1 3 is provided with at least one pivot hole 2 1 3 0 at a position adjacent to the back side wall 2 1 2. A mounting bracket (not shown in the figure) can be pivoted thereon to The hollow casing 21 is installed and fixed in an appropriate position. The hollow casing 21 is located inside the back side wall 2 1 2 and is provided with a sound source control circuit 23 for receiving a sound amplifier. (Not shown in the figure), the sound source signal is transmitted, and the sound source is controlled. The cover 22 is provided with .1 one together_a π 八"And at least one bass reflection hole 2 2 2 'the size of the cover body 2 can just be installed and fixed to the periphery of the opening 2 10' so 'the high-frequency and low-frequency sound source signals generated by the sound source control circuit 23 It can be transmitted to the woofer 22 and the tweeter W221, respectively, to excite the tympanic membrane of each of the speakers 22 and 221 to generate high-frequency and low-frequency sound effects. '' In the present invention, the eight-speaker structure 2 〇 The cover The body 22 and the inner side of the back side wall 212! ^ Read more shown in Figure 4, also installed-a non-woven fabric or foam // sound source control circuit M using the damping material 24 to absorb bass amplitude, ^ = Nepal Material 24, Eli's signal line 231 and power circuit 2 3 2 produce low-frequency A ^ bad interference on the source control circuit 23, and the outer side of the cover 22 is also π 4 ^ vibrating, which adds a grid to the bass sound effect. Dust cover

1236856 V. Description of the invention (7) 25, used to protect each of the horns 22 0, 221, and prevent dust and other debris from floating into the horn. Eight speakers structure within 20. In the present invention, since the two corresponding side walls 2 11 of the hollow housing 21 are designed to extend from the periphery of the opening 2 10 to the rear side wall 2 1 2 in a wavy manner in a tapered manner, In the preferred embodiment of the present invention shown in FIGS. 4 and 5, the two corresponding side walls 2 11 are respectively composed of two wavy arcs, and the arcs adjacent to the opening 2 10 are Bend into the hollow casing 21, and the arc surface adjacent to the back side wall 2 1 2 is curved toward the outside of the hollow casing 21, so an inverse curve will be formed between the two wavy arc surfaces. 211 〇, the present invention uses the two side walls 211 that are wavy and tapered backward to make the ratio between the cross-sectional area of the hollow casing 21 adjacent to the opening 210 and the cross-sectional area of the back side wall 2 12 Under the same depth of the hollow shell 21, it can be more traditional. The ratio of the cross-sectional area of the eight-speaker structure has a large change, so that when the horn 2 2 0 1 of the woofer 2 2 vibrates (when the tympanum 2 2 0 1 moves backward), and the hollow casing 2 When the gas in 1 exerts a backward pushing force, the gas in the hollow casing 2 can be compressed, and the two side walls 2 11 designed to be tapered backwards can be compressed at a faster speed along the wave shape. , Quickly flows backward, and near the inside of the back side wall 2 1 2, an airflow with a higher kinetic energy is generated, making Gaila. The eight-speaker structure 20 produces a stronger low-frequency co-vibration effect. In addition, it is particularly important to note that when the gas flowing rapidly along the two side walls 2 11 which is designed to be tapered backwards gradually hits the back side wall 2 1 2 and bounces back in the direction of the opening 2 10, due to the The arc surface on the two side walls 2 1 1 which is adjacent to the back side wall 2 1 2 is bent outward from the hollow shell 2 1, so the rebounded gas will bounce back to the sink along the tangent line 2 11 1 of the arc surface.该 盖 The cover

Page 11 1236856 V. Description of the invention (8) The rear edge of at least one bass reflection hole 222 designed on the body 22, and most of the gas that bounces back will pass through the bass reflection hole 2 2 2 and exit to the outside smoothly. . Figures 4 and 5 show only one of the preferred embodiments of the present invention. The actual implementation of the present invention is not limited to this. According to those skilled in the art, using the design concepts disclosed in the present invention, the two The corresponding side wall 2 1 1 is designed to be composed of at least one wavy arc surface, as long as the arc surface adjacent to the back side wall 2 1 2 is bent outward toward the hollow casing 2 to form two wave-shaped backwards. The tapered side wall 2 11 is designed to produce a larger cross-sectional area change rate than the traditional La A speaker structure under the same depth of the hollow housing 21, and the inner gas can hit the back side wall 2 1 2 and bounce back towards the opening 2 10 direction, 'can be gathered along the tangent line 2 111 of the arc surface and rebounded to the rear edge of at least one bass reflection hole 222 designed on the cover 22, which should all belong to The scope of the claimed invention. _ In addition, in the aforementioned preferred embodiment of the present invention, refer to FIGS. 4 and 6 because the other two of the hollow housing 2 1 correspond to the side wall 2 1 3, which is designed to be formed by the opening 2 1 0 The peripheral edge extends parallel to the back side wall 2 1 2, and the back side wall 2 1 2 is adjacent to the other corresponding side wall 2 丨 3, respectively, with an arc or inclined wall surface 2 1 2 0 and each of the other two Corresponding side walls 2 1 3 are connected. In the preferred embodiment, the two wall surfaces 2 120 are arc surfaces that are curved to the inside of the hollow casing 21 respectively, so that the back side walls 2 丨 2 form a tapered rearward. Design, this—design 'vibrates the tympanum 22 〇1 of the bass 20, and exerts a backward pushing force on the gas in the hollow housing 21, so that the gas in it flows backward When it is close to the inside of the back side wall 2 丨 2, the formed

Page 1212856856 V. Description of the invention (9) The airflow with higher kinetic energy is concentrated on the inner side of the back side wall 2 1 2 corresponding to the bass reflection hole 2 2 2. In this way, these gases are hitting the back When the side wall 212 bounces back in the direction of the opening 210, it can be concentrated and bounced back to the rear edge of the bass reflection hole 2222, and the bounced gas can be smoothly emitted through the bass reflection hole 222 'to the outside. In summary, the horn speaker structure 2 of the present invention, when the tympanum 2 2 0 1 of the woofer 2 2 0 is vibrated, the corresponding side walls 2 11 and the rearward side of the wave-shaped design can be sequentially used. The tapered design of the back side wall 2 1 2 smoothly guides and condenses the gas in the hollow casing 21 to the inside of the back side wall 2 1 2 corresponding to the trailing edge position of the bass reflection hole 222 and passes through the bass The reflection holes 2 2 2 are emitted to the outside, or the negative pressure in the hollow casing 21 is used (when the eardrum 220 1 is moved forward), and the outside air is passed through the bass reflection holes 2 2 2 to guide smoothly. Introduced into the hollow casing 21, this structural design can not only make the air flow in the hollow casing 21 smoother, effectively reduce the probability of secondary reflection of the bass waves', but also significantly slow down the hollow casing 21 Compressed gas and negative pressure have a negative effect on the vibration of the tympanum 220 1 of the bass π π 220 to effectively reduce the phenomenon of bass distortion, and therefore can effectively improve the bass quality and volume of the bass speaker. The above description is only a preferred embodiment of the present invention, but the scope of rights claimed by the present invention is not limited to this. According to the technical content disclosed by the person skilled in the art based on the present invention, one can easily think about it. And equivalent changes, all should not depart from the protection scope of the present invention.

1236856 on page 13 Brief description of the diagram Description of the diagram: Figure 1 is a schematic diagram of the structure of the traditional speaker speaker structure; Figure 2 is a schematic cross-sectional diagram of the structure of the traditional speaker A of Figure 1, Figure 3 Fig. 1 is a schematic longitudinal sectional view of the structure of a conventional speaker box in Fig. 1, and Fig. 4 is an assembly schematic view of the structure of a loudspeaker box according to the present invention; Fig. 5 is a schematic view in cross section of the structure of a speaker box of the present invention; Fig. 6 is a schematic longitudinal sectional view showing the structure of the speaker box of the present invention. The main part of the symbol: Speaker structure ......... 20 Opening ..... 210 Anti-curve ... ...... 2110 Back side wall ............ 212 Another two corresponding side walls ......... 213 Cover ..... 22 Tympanum .............. 22 0 1 Bass reflection hole ............ 222 signal line ............ 231 damping material ......... .24 Hollow shell ......... 21 Two corresponding side walls ......... 211 Tangent line of arc surface ......... 2111 Arc wall surface. ........... 2120 Pivot hole ......... 2130 Bass ° thorn σ eight ......... 2 2 0 tweeter ......... 221 source control circuit ...... 23 power circuit ......... 232 dust cover. .............. 25

Page 14

Claims (1)

/ 、、 Scope of application for patents—the body of the M housing at the middle of an eighth speaker with intermediate airflow efficiency, the front side of the hollow housing I :; structure, including: ^ — an opening corresponding to the side wall system, The hollow # = way extends to its back side wall, 卩, the edge of Γ f is wavy back to the other two corresponding side walls of the sf shell parallel to the sf shell from the periphery of the opening /, the wall surface tapering backward; The back side wall, the back side wall, a sound source control circuit, inside the vertical wall, is used to receive the transmission of the ":: ,, ::" system is fixed to the back side processing; the sound source signal, and it is controlled by the sound source -The cover body, the size of the cover body can be provided with at least one woofer and 1 to the periphery of the opening; the horn can receive the sound source control electric -3 reflection hole, the bass pulls the eardrum on it Vibration produces a low gj effect. When a low-frequency source signal is generated, the excitation corresponds to the center position near the back side wall. &quot; The bass reflection hole is located in ▲ 2 as described in the π eight speaker structure described in the patent application No. J 帛, wherein the two corresponding side walls are respectively composed of the i-plane to the H-wave Xiaoda. 3. The horn speaker structure described in item 2 of the scope of the patent application, wherein 4 / corresponding to the side / arc surface on the side wall adjacent to the back side wall is outward from the hollow casing. 4. The horn speaker structure as described in item 3 of the scope of patent application, wherein the other / arc surface on the two corresponding side walls adjacent to the opening is directed toward the hollow casing and helps. 5. The horn speaker structure described in item 4 of the scope of patent application, wherein an inverse curve is formed between the two wavy arc surfaces to form a wavy direction. 1236856 6. Scope of patent application An inverse curve will be formed between the two wavy arc surfaces to form the two side walls that are wavy and tapered backward. 6. As mentioned in item 3 of the scope of patent application. The eight-speaker structure, wherein the back side wall is adjacent to the other two corresponding side walls, and is connected with each of the other two corresponding side walls with an inclined wall surface. 7. As described in item 3 of the scope of patent application. An eight-speaker structure, in which the back side wall is adjacent to the other two corresponding side walls, and each arc side wall is connected to each of the other two corresponding side walls. 8. According to the Laba speaker structure described in item 7 of the scope of the patent application, wherein the back side wall is adjacent to the other two corresponding side walls, respectively, with curved surfaces that are bent in the hollow housing, the The back side wall forms a design that tapers backwards. 9. The speaker structure as described in item 3 of the scope of patent application, wherein each of the other two corresponding side walls is provided with at least one pivot hole at a position adjacent to the back side wall, and one of them can be pivotally mounted for installation. frame. 10. The speaker and speaker structure described in item 3 of the scope of patent application, further comprising a damping material made of non-woven fabric or foam, the damping material is installed between the cover and the sound source control circuit. Page 16