CN213906901U - Coaxial loudspeaker with horn - Google Patents

Abstract

The utility model discloses a coaxial loudspeaker with bugle, it includes woofer and tweeter, coaxial loudspeaker is still including having the inner chamber and the open bugle in upper and lower both ends, tweeter includes the high pitch basin, the bugle encircles the high pitch basin, the lower tip of bugle connect in tweeter, the upper end of bugle is the biggest department of its internal diameter. The utility model discloses can possess better frequency response curve at high pitch loudspeaker during operation, also do not influence low pitch loudspeaker's sound field radiation simultaneously.

Description

Coaxial loudspeaker with horn

Technical Field

The utility model relates to a speaker field, concretely relates to coaxial speaker with bugle.

Background

The coaxial speaker is integrated with a tweeter and a woofer, which are responsible for reproducing high pitch and medium bass, respectively. The advantage lies in greatly improving the bandwidth of the monomer loudspeaker, and is widely applied to the automobile sound. At present, a few high-quality loudspeaker sound systems sometimes only use the tweeter of the coaxial loudspeaker to make the woofer not sound, so as to adjust the sound field in the vehicle. This also results in the tweeter also needing a good frequency response when operating alone. However, in the coaxial speaker, the structure of the woofer inevitably affects the radiation sound field of the tweeter unit.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a coaxial loudspeaker with bugle, it can possess better frequency response curve at high pitch loudspeaker during operation, does not influence woofer's sound field radiation yet simultaneously.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a coaxial loudspeaker with bugle, includes woofer and tweeter, coaxial loudspeaker is still including having the inner chamber and the open bugle in upper and lower both ends, tweeter includes the high pitch basin, the bugle encircles the high pitch basin, the lower tip of bugle connect in tweeter, the upper end of bugle is the biggest department of its internal diameter.

In a preferred embodiment, the horn has an expanding portion, and the inner diameter of the expanding portion gradually increases from bottom to top. More preferably, the expansion portion has an inner contour in a cross section in the up-down direction in the form of two mirror-symmetrical bezier curves. So that the frequency response curve of high frequency is smoother.

In a preferred embodiment, the inside diameter of the horn is gradually increased from bottom to top. More preferably, the horn has an inner contour in a cross section in the up-down direction in the form of two mirror-symmetrical bezier curves. So that the frequency response curve of high frequency is smoother.

Preferably, the tweeter further comprises a cabin disposed on the woofer, the tweeter is disposed on the cabin, and a lower end of the horn is connected to an outer peripheral edge of the cabin and/or the tweeter.

More preferably, a part of the lower end surface of the horn has an upwardly arched portion, and the edge portion of the high pitch cone is located below the arched portion and forms an annular concave cavity therebetween communicating with the inner cavity. So that the frequency response curve of high frequency is smoother.

More preferably, the tweeter still includes the soldering lug that is used for transmitting audio signal to the high pitch voice coil, the upper portion of soldering lug is inlayed and is established in the passenger cabin and switch on with the input of high pitch voice coil, the lower part of soldering lug stretches into in the woofer with switch on with the signal input line.

Furthermore, the woofer comprises a magnetic circuit system, a through hole extending in the vertical direction is formed in the magnetic circuit system, the signal input line penetrates into the through hole, and the lower portion of the soldering lug extends into the through hole to be conducted with the signal input line.

Preferably, the coaxial speaker further comprises a dust ring connected between the horn and the woofer.

More preferably, the woofer includes a bass cone, the dust ring is connected between the horn and the bass cone, and the dust ring is made of an air-permeable material. The magnetic gap dust-proof device is used for preventing dust in the magnetic gap of the woofer.

Further, the cross section of the dust ring along the up-down direction comprises two mirror symmetry waves or saw-teeth shapes, so as to avoid pulling the bass cone when the bass loudspeaker works.

Further, the breathable material is cotton, PC (polycarbonate) or CONEX (aramid fiber). The dust ring is only used for dust prevention and is not used for water prevention.

Preferably, woofer includes the bass voice coil, tweeter set up in the bass voice coil, woofer's the top reaches the upper end of bugle all is less than woofer's upper end. The tweeter and horn are located entirely within the woofer.

Preferably, the coaxial speaker further comprises a plurality of extension fins extending inwardly from an inner surface of the horn, the extension fins being located above a tweeter cone of the tweeter speaker. More preferably, the extended fin extends radially inward of the horn. Further, the size of the extending fin in the radial direction gradually increases from top to bottom. Further, the lower end portion of each of the extension fins is connected to an annular member. Further, the inner edge of the extension fin is arc-shaped. The extending fins can effectively protect internal components of the high pitch loudspeaker and prevent foreign objects such as fingers from entering the high pitch loudspeaker by mistake to damage the internal components such as the high pitch cone; the extended fins also provide better high frequency dispersion.

The utility model adopts the above scheme, compare prior art and have following advantage:

the utility model discloses a coaxial loudspeaker with bugle, when high pitch loudspeaker during operation, high pitch bugle guide sound wave to the dead ahead propagation, has prevented the sound wave from radiating backward to reduce the influence of low pitch loudspeaker to the high pitch, the structure of gradually outwards expanding does benefit to the expansion of high pitch loudspeaker high frequency simultaneously.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic overall appearance diagram of a coaxial speaker according to an embodiment of the present invention;

fig. 2 is a top view of the coaxial speaker of fig. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

fig. 5 is a perspective view of the tweeter and horn of fig. 2;

fig. 6 is a cross-sectional view of the tweeter and horn of fig. 2;

fig. 7 is a graph comparing frequency response curves of a coaxial speaker without horn and the coaxial speaker according to the embodiment of the present invention.

In the above-described figures of the drawings,

1. a woofer; 11. a basin stand; 12. a bass basin; 13. a bass voice coil; 14. a first magnetic circuit system; 141. t iron; 142. magnetic steel; 143. a through hole; 15. a signal input line; 16. positioning the supporting sheet;

2. a high pitch loudspeaker; 21. a cabin; 22. a high-pitch basin; 221. a central arch portion; 222. an edge arch; 23. a high pitch voice coil; 24. a second magnetic circuit system; 25. soldering lugs;

3. a horn; 31. an arching portion; 310. an annular cavity; 32. an extension fin; 33. an annular member;

4. a dust ring.

Detailed Description

The following detailed description of the preferred embodiments is provided in conjunction with the accompanying drawings to enable those skilled in the art to more readily understand the advantages and features of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, the present embodiment provides a coaxial speaker having a horn, which includes a woofer 1 and a tweeter 2 coaxially disposed. The coaxial speaker further includes a horn 3 having an inner cavity and opened at upper and lower ends. The tweeter 2 includes a tweeter basin 22, and the horn 3 surrounds the tweeter basin 22. The lower end of horn 3 is connected to tweeter 2, and the upper end of horn 3 has the largest inner diameter. The horn 3 has an expanded portion whose inner diameter gradually increases from bottom to top. Further, the inside diameter of the horn 3 gradually increases from bottom to top, and the whole horn 3 is gradually expanded outward. Specifically, the horn 3 has an inner contour in the form of two mirror-symmetric bezier curves in a cross section in the vertical direction, so that a high-frequency response curve is smooth, as shown in fig. 3. In another embodiment, the horns 3 may be flared first inward and then gradually outward. Horn 3 significantly reduces the effect of the structure of woofer 1 on the sound field radiated by tweeter 2.

The woofer 1 comprises a frame 11, a bass sound basin 12 and a first magnetic circuit system 14 which are arranged on the frame 11, a bass voice coil 13 connected to the bass sound basin 12, and a positioning support 16 sleeved on the bass voice coil 13. The first magnetic circuit system 14 forms a magnetic gap into which the bass voice coil 13 is inserted, and the lower end of the bass voice coil 13 is inserted into the magnetic gap and vibrates up and down after being energized, thereby driving the bass cone 12 to vibrate and produce sound. The positioning stay 16 has its outer peripheral edge fixed to the frame 11 for preventing the bass voice coil 13 from horizontally wobbling.

The tweeter 2 is generally disposed in the voice coil of the woofer 1. The upper end of the bass loudspeaker 1 and the upper end of the horn 3 are both lower than the upper end of the bass loudspeaker 1, and the high pitch loudspeaker 2 and the horn 3 are integrally positioned in the bass loudspeaker 1, so that the volume of the coaxial loudspeaker and the occupied space of the coaxial loudspeaker cannot be additionally increased.

The tweeter 2 specifically includes a cabinet 21 provided on the woofer 1, the tweeter tub 22 and the second magnetic circuit 24 provided on the cabinet 21, and a tweeter voice coil 23 connected to the tweeter tub 22. The second magnetic circuit 24 forms a magnetic gap into which the high pitch voice coil 23 is inserted, and the lower end of the high pitch voice coil 23 is inserted into the magnetic gap and vibrates up and down after being energized, thereby driving the high pitch cone 22 to vibrate and generate sound.

The cabin 21 is provided specifically on the first magnetic circuit 14 of the woofer 1. The first magnetic circuit system 14 specifically includes a T-iron 141 and a magnetic steel 142 sleeved on the T-iron 141, wherein the magnetic steel 142 surrounds the T-iron 141 and forms a magnetic gap. The cabin 21 is disposed on the upper portion of the T-bar 141. Specifically, in this embodiment, the T-bar 141 is provided with a through hole 143 extending in the vertical direction. The lower part of the cabin 21 is inserted into the through hole 143.

The tweeter 2 further comprises a solder tab 25 for transmitting an audio signal to the tweeter coil 23. The soldering lug 25 is embedded in the cabin 21 at its upper portion and is electrically connected to the input terminal of the treble voice coil 23, and the soldering lug 25 is extended at its lower portion into the woofer 1 to be electrically connected to the signal input line 15. Specifically, the signal input line 15 penetrates into the through hole 143, and the lower portion of the tab 25 protrudes into the through hole 143 to be conductive with the signal input line 15. The signal input line 15 is also electrically connected to a lead wire of the bass voice coil 13, and inputs an audio signal to the woofer 1.

As shown in fig. 3 and 4, the lower end of the horn 3 is connected to the outer peripheral edge of the cabin 21 and/or the treble cone 22. The horn 3 has an upwardly curved portion 31 in a part of the lower end surface (a portion near the inner side), and the edge portion of the high pitch cone 22 is located below the portion 31 and forms an annular concave cavity 310 communicating with the inner cavity therebetween, so that the high frequency response curve is smooth. Specifically, the tweeter tub 22 includes a center arch 221 that is arched upward and a ring of edge arches 222 that surround the center arch 221, the edge arches 222 being located below the arch 31 of the horn 3.

The coaxial loudspeaker also comprises a dust ring 4 connected between horn 3 and woofer 1. The dust ring 4 is connected specifically between the upper end of the horn 3 and the bass cone 12. The dust ring 4 is made of a breathable material and is used for preventing dust in the magnetic gap of the woofer 1. The cross section of the dust ring 4 in the up-down direction comprises two mirror-symmetrical waves or zigzags to avoid pulling the bass cone 12 when the woofer 1 is in operation. The air permeable material is cotton, PC (polycarbonate) or CONEX (aramid fiber). The dust ring 4 is used only for dust prevention and not for water prevention.

Further, the coaxial speaker further includes a plurality of extension fins 32 extending inwardly from the inner surface of the horn 3, the extension fins 32 being located above the tweeter cone 22 of the tweeter 2. Specifically, the extension fin 32 extends inward in the radial direction of the horn 3, and the extension fin 32 gradually increases in size from top to bottom in the radial direction. The lower end of each extending fin 32 is connected to an annular member 33. The inner edges of the extension fins 32 are arcuate. The extension fin 32 can effectively protect the internal components of the tweeter 2 and prevent foreign objects such as fingers from entering the tweeter 2 by mistake and damaging the internal components such as the tweeter basin 22; the extended fins 32 also enable better high frequency dispersion.

A frequency response test was performed on a coaxial speaker without horn (comparative example) and a coaxial speaker with horn 3 of the present example, respectively, and the test results are shown in fig. 7. The structure of the coaxial speaker of the comparative example is basically the same as that of the present embodiment, differing only in that: the high pitch loudspeaker is not provided with a horn, and the dust ring is connected between the high pitch loudspeaker and the low pitch loudspeaker. The thin line in fig. 7 is the frequency response curve of the high-pitch speaker in the coaxial speaker of the comparative example; the thick line in the figure is the frequency response curve of the high-pitch speaker in the coaxial speaker of the present embodiment. As can be seen from the figure, the frequency response curves of the high-frequency speakers in the coaxial speaker of the present embodiment are more balanced.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are preferred embodiments, which are intended to enable persons skilled in the art to understand the contents of the present invention and to implement the present invention, and thus, the protection scope of the present invention cannot be limited thereby.

Claims (10)

1. A coaxial speaker with horn, comprising a woofer and a tweeter, characterized by: coaxial loudspeaker is still including having the inner chamber and the horn that both ends are open about and, tweeter includes the high pitch basin, the horn encircles the high pitch basin, the lower tip of horn connect in tweeter, the upper end of horn is the biggest department of its inner diameter.

2. The coaxial speaker of claim 1, wherein: the horn is provided with an expansion part, and the inner diameter of the expansion part is gradually increased from bottom to top; or the inner diameter of the horn is gradually increased from bottom to top.

3. The coaxial speaker of claim 1, wherein: the high pitch loudspeaker further comprises a cabin, the cabin is arranged on the low pitch loudspeaker, the high pitch cone is arranged on the cabin, and the lower end part of the horn is connected to the peripheral edge of the cabin and/or the high pitch cone.

4. The coaxial speaker of claim 3, wherein: the part of the lower end surface of the horn is provided with an upward arched part, and the edge part of the high-pitch cone is positioned below the arched part and forms an annular concave cavity communicated with the inner cavity between the arched part and the high-pitch cone.

5. The coaxial speaker of claim 3, wherein: the high pitch loudspeaker is still including being used for transmitting audio signal's soldering lug to high pitch voice coil loudspeaker voice coil, the upper portion of soldering lug inlays to be established in the passenger cabin and with high pitch voice coil loudspeaker's input switches on, the lower part of soldering lug stretches into switch on with the signal input line among the low pitch loudspeaker.

6. The coaxial speaker of claim 5, wherein: the bass loudspeaker comprises a magnetic circuit system, a through hole extending in the vertical direction is formed in the magnetic circuit system, the signal input line penetrates into the through hole, and the lower portion of the soldering lug extends into the through hole to be conducted with the signal input line.

7. The coaxial speaker of claim 1, wherein: the coaxial speaker further includes a dust ring connected between the horn and the woofer.

8. The coaxial speaker of claim 7, wherein: the woofer comprises a bass cone, the dustproof ring is connected between the horn and the bass cone, and the dustproof ring is made of a breathable material.

9. The coaxial speaker of claim 1, wherein: woofer includes bass voice coil, tweeter set up in the woofer voice coil, woofer's the top reaches the upper end of bugle all is less than woofer's upper end.

10. The coaxial speaker of claim 1, wherein: the coaxial speaker further includes a plurality of extension fins extending inwardly from an inner surface of the horn, the extension fins located above a tweeter cone of the tweeter.

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