Coaxial Speaker

Abstract

The present invention provides a coaxial speaker. [Solution] The coaxial speaker includes a frame, a magnetic circuit system, a first vibration system, and a second vibration system surrounding the first vibration system, the first vibration system and the second vibration system are coaxially installed, the first vibration system includes a first vibration membrane and a first voice coil for driving the vibration sound of the first vibration membrane, the second vibration system includes a second vibration membrane and a second voice coil for driving the vibration sound of the second vibration membrane, the magnetic circuit system includes a first magnetic gap and a second magnetic gap located outside the first magnetic gap, the first voice coil is at least partially inserted in the first magnetic gap, the second voice coil is at least partially inserted in the second magnetic gap, the first vibration membrane is used to generate high-pitched sounds, and the second vibration membrane is used to generate low-pitched sounds. In the coaxial speaker, the low-pitched sounds and the high-pitched sounds form a coaxial full-band speaker, providing high-quality sound effects.

Description

[Technical field]

[0001] The present invention relates to the field of sensors, and in particular to coaxial speakers. [Background technology]

[0002] A coaxial speaker refers to a speaker in which a treble speaker unit and a bass speaker unit are integrated and arranged coaxially. The sound sources of the treble speaker unit and the bass speaker unit of a coaxial speaker can be located in front of the coaxial speaker, that is, the sound sources of the two speaker units have the same sound direction, or they can be located on the front and back of the coaxial speaker, that is, the sound sources of the two speaker units have different sound directions.

[0003] The treble speaker unit and the watt speaker unit of the coaxial speaker in the related technology are each equipped with an independent vibration system and a magnetic circuit system, resulting in a complex structure. The overall height of the coaxial speaker, which is configured coaxially with the treble speaker unit and the watt speaker unit, increases, making it difficult to install because of the high height, reducing the applicability of the product. In addition, the separated treble and watt magnetic circuits also increase the manufacturing cost and reduce the market competitiveness of the product. In addition, in the related technology, the effective area of ​​the vibration membrane in the speaker unit separated from the sound output surface is limited, making it impossible to meet the requirements for the full range of sound.

[0004] Therefore, in order to solve the above technical problems, it is necessary to provide a new coaxial speaker. Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a coaxial speaker that can be constructed compactly and has excellent acoustic effects for high and low tones. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a coaxial speaker, comprising: a frame; a magnetic circuit system fixed to a lower portion of the frame; a first vibration system fixed to the inside of the frame; and a second vibration system fixed to the outside of the frame and surrounding the first vibration system, the first vibration system being installed coaxially with the second vibration system, the first vibration system including a first vibration membrane and a first voice coil for driving the vibration sound of the first vibration membrane, the second vibration system including a second vibration membrane and a second voice coil for driving the vibration sound of the second vibration membrane, the magnetic circuit system including a first magnetic gap and a second magnetic gap located outside the first magnetic gap, the first voice coil being at least partially inserted in the first magnetic gap, the second voice coil being at least partially inserted in the second magnetic gap, the first vibration membrane being used to generate high-pitched sounds, and the second vibration membrane being used to generate low-pitched sounds.

[0007] Preferably, the coaxial speaker further comprises an insert surrounded by the magnetic circuit system and a first circuit board fixed to the insert, the insert having a first terminal penetrating therethrough, and the first voice coil electrically connected to the first circuit board via the first terminal.

[0008] Preferably, the coaxial speaker further comprises a support stand and an elastic assembly connecting the second vibration system and the support stand, the elastic assembly comprising a second circuit board and a supporting vibration membrane connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

[0009] Preferably, the magnetic circuit system comprises a magnetic yoke, the magnetic yoke having a side wall surrounding an accommodation space and a bottom wall formed by folding and extending from one end of the side wall, the insert is accommodated within the accommodation space, the magnetic circuit system further comprises a first magnetic steel assembly installed on one side of the magnetic yoke and a second magnetic steel assembly installed on the other side of the magnetic yoke, the first magnetic steel assembly comprises a first magnetic steel, the first magnetic gap is formed between the first magnetic steel and the side wall of the magnetic yoke, and the second magnetic steel assembly comprises a second magnetic steel and a third magnetic steel located outside the second magnetic steel and forming the second magnetic gap with the second magnetic steel.

[0010] Preferably, the first magnetic steel, the second magnetic steel, and the third magnetic steel are magnetized along the vibration direction of the coaxial speaker, and the first magnetic steel and the second magnetic steel are installed opposite each other with the same pole, and the second magnetic steel and the third magnetic steel are magnetized in opposite directions.

[0011] Preferably, the first vibrating membrane comprises a first dome portion and a first suspension surrounding the first dome portion, the first suspension is provided with a first fixed portion, the frame has an inner wall, and the first fixed portion is bonded and fixed to the inner wall.

[0012] Preferably, the first magnetic steel assembly includes a pole plate provided on the first magnetic steel, and the first fixed portion is partially sandwiched between the frame and the pole plate.

[0013] Preferably, the frame has an outer wall, the second vibration membrane has a second suspension, a second dome portion installed surrounding the second suspension, and a third suspension surrounding the second dome portion, the third suspension is fixed to the support stand, the second vibration system further has a voice coil bobbin connecting the second suspension, the second dome portion, the third suspension, and the second voice coil, and one end of the second suspension close to the first vibration system is fixed to the outer wall of the frame and / or the first magnetic steel.

[0014] Preferably, the voice coil bobbin includes a skeletal flat portion that is attached to the second dome portion, a first extension portion that is bent and extends from the skeletal flat portion toward the second circuit board and connected to the second circuit board, and a second extension portion that is bent and extends from the skeletal flat portion toward the second voice coil and connected to the second voice coil.

[0015] Preferably, the insert is provided with a leak passage therethrough. Effect of the Invention

[0016] Compared with the related art, the coaxial speaker of the present invention comprises a frame, a magnetic circuit system fixed below the frame, a first vibration system fixed inside the frame, and a second vibration system fixed outside the frame and surrounding the first vibration system, the first vibration system is installed coaxially with the second vibration system, the first vibration system comprises a first vibration membrane and a first voice coil for driving the vibration sound of the first vibration membrane, the second vibration system comprises a second vibration membrane and a second voice coil for driving the vibration sound of the second vibration membrane, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap located outside the first magnetic gap, the first voice coil is at least partially inserted in the first magnetic gap, and the second voice coil is at least partially inserted in the second magnetic gap, the first vibration membrane is used to produce high-pitched sounds, and the second vibration membrane is used to produce low-pitched sounds. According to the coaxial speaker of the present invention, a ring-shaped bass vibration system is installed to provide the bass effect, and a treble vibration system is installed inside the bass vibration system to provide the treble effect, so that the bass and treble form a coaxial full-band speaker, which provides high-quality acoustic effects; and the two voice coils share part of the magnetic circuit system, which further reduces the cost, improves the acoustic performance, and reduces the overall height of the coaxial speaker of the present invention. [Brief description of the drawings]

[0017] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in describing the embodiments. However, the drawings described below are only a part of the embodiments of the present invention, and those skilled in the art in the technical field to which the present invention belongs can obtain other drawings based on these drawings without having to perform creative work. [Figure 1] 1 is a schematic perspective view showing a configuration of a coaxial speaker according to the present invention; [Diagram 2] FIG. 2 is a partial exploded view of the coaxial speaker shown in FIG. [Diagram 3] 2 is another partially exploded view of the coaxial speaker shown in FIG. 1. [Figure 4] FIG. 2 is an exploded view of some components of the coaxial speaker shown in FIG. [Diagram 5] FIG. 2 is an exploded view of the coaxial speaker shown in FIG. [Figure 6] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 7] FIG. 2 is a cross-sectional view taken along line BB in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is clear that the described embodiments are only some of the embodiments of the present invention, and are not all of the embodiments. All other embodiments obtained based on the embodiments of the present invention without the creative labor of those skilled in the art in the technical field to which the present invention belongs shall all fall within the protection scope of the present invention.

[0019] At the same time, as shown in Figures 1-7, the present invention provides a coaxial speaker 100, which includes a frame 1, a magnetic circuit system 2 fixed to the frame 1, a first vibration system 3 fixed inside the frame 1, a second vibration system 4 fixed outside the frame 1, an insert 5, a first circuit board 6 fixed to the insert 5, a support stand 7, and an elastic assembly 8, and the second vibration system 4 is disposed around the outside of the first vibration system 3 and coaxially with the first vibration system 3.

[0020] The outer periphery of the frame 1 is approximately rectangular and has an inner wall 11 and an outer wall 12 arranged opposite the inner wall 11, the first vibration system 3 being fixed to the inner wall 11 of the frame and the second vibration system 4 being fixed to the outer wall 12 of the frame.

[0021] The magnetic circuit system 2 includes a magnetic yoke 21, a first magnetic steel assembly 22 provided on one side of the magnetic yoke 21, and a second magnetic steel assembly 23 provided on the other side of the magnetic yoke 21. The first magnetic steel assembly 22 is provided coaxially with the second magnetic steel assembly 23. The magnetic yoke 21 includes a side portion 211 surrounding an accommodation space 210, and a bottom wall 212 formed by bending and extending from one end of the side portion 211. The first magnetic steel assembly 22 includes a first magnetic steel 221 and a pole plate 222 provided on the first magnetic steel 221, and a first magnetic gap 220 is formed between the first magnetic steel 221 and the side portion 211 of the magnetic yoke 21. A cut surface 2211 is provided on the outer edge of the surface of the first magnetic steel 221 that approaches the second vibration system 4. The bottom wall 212 of the magnetic yoke 21 supports the first magnetic steel 221. The second magnetic steel assembly 23 includes a second magnetic steel 231, a third magnetic steel 232 forming a second magnetic gap 230 with the second magnetic steel 231, and a magnetic conductive plate 233 laminated above the third magnetic steel 232, and a bottom wall 212 of the magnetic yoke 21 is laminated above the second magnetic steel 231, and the first magnetic steel 221 is provided directly opposite the second magnetic steel 232. The magnetic circuit system 2 further includes a magnetic yoke 24 supporting the second magnetic steel 231 and the third magnetic steel 232, and a lower surface of the magnetic yoke 24 is flush with a lower surface of the insert 5.

[0022] The first magnetic steel 221, the second magnetic steel 231, and the third magnetic steel 232 are magnetized along the vibration direction of the coaxial speaker 100, and the first magnetic steel 221 and the second magnetic steel 231 are provided facing each other with the same pole, that is, the magnetization directions of the first magnetic steel 221 and the second magnetic steel 231 are opposite, and the magnetization directions of the second magnetic steel 231 and the third magnetic steel 232 are opposite. In this embodiment, the first magnetic steel 221, the pole plate 222, the second magnetic steel 231, the third magnetic steel 232, and the magnetic conductive plate 233 all have a hollow ring structure.

[0023] The first vibration system 3 comprises a first vibrating membrane 31 and a first voice coil 32 that drives the vibration sound generation of the first vibrating membrane 31, the first voice coil 32 is at least partially inserted within the first magnetic gap 220, and the first vibrating membrane 31 is used to generate high-pitched sounds, and the sound generation direction is upward along the vibration direction. The first vibrating membrane 31 includes a first dome portion 311 and a first suspension 312 surrounding the first dome portion 311, the first suspension 312 having a hollow ring structure and a structure protruding upward along a vibration direction, a first fixing portion 313 is provided on an outer edge of the first suspension 312, and a second fixing portion 314 is provided on an inner edge thereof, the first fixing portion 313 is bonded and fixed to an inner wall of the frame 1, the first dome portion 311 is bonded and fixed to a lower surface of the second fixing portion 314, and is interposed between the second fixing portion 314 and the first voice coil 32. The first fixing portion 313 is partially sandwiched between the frame 1 and the pole plate 222.

[0024] The second vibration system 4 includes a second vibrating membrane 41, a second voice coil 42 that drives the vibration sound of the second vibrating membrane 41, and a voice coil bobbin 43 that connects the second vibrating membrane 41 and the second voice coil 42. The second voice coil 42 is at least partially inserted in the second magnetic gap 230. The second vibrating membrane 41 is used to sound a low tone, and the sound direction is upward along the vibration direction. The second vibrating membrane 41 includes a second suspension 411, a second dome 412 that is provided to surround the second suspension 411, and a third suspension 413 that is provided to surround the second dome 412. The second suspension 411, the second dome portion 412, and the third suspension 413 all have a hollow ring structure, and the second suspension 411 has a structure that protrudes upward along the vibration direction, and the third suspension 413 has a structure that is recessed downward along the vibration direction. The voice coil bobbin 43 connects the second suspension 411, the second dome portion 412, the third suspension 413 and the second voice coil 42. One end of the second suspension 411 close to the first vibrating membrane 31 is fixed to the outer wall 12 of the frame 1 and / or the first magnetic steel 221, and the third suspension 413 includes a second fixing portion 4131.

[0025] A recess 241 is provided in the magnetic yoke 24 at a position corresponding to the second voice coil 42, thereby providing a sufficient vibration space for the second voice coil 42.

[0026] The insert 5 is provided in an accommodating space 210 surrounded by a side portion 211 of the magnetic yoke 21, the first circuit board 6 is attached to the outer surface of the magnetic yoke 24, the insert 5 is provided with a first terminal 91 penetrating therethrough, the first terminal 91 is connected to the first circuit board 6, and the first voice coil 32 realizes an electrical connection with the first circuit board 6 through the first terminal 91. The insert 5 is provided with a leak passage 51 penetrating therethrough.

[0027] The support stand 7 is a ring-shaped steel ring, and the second fixing part 4131 of the third suspension 413 is fixedly connected to the support stand 7, specifically, the second fixing part 4131 covers an upper surface and a part of an outer surface of the support stand 7. The pole plate 222 is fixed to one end of the support stand remote from the second vibrating membrane 41.

[0028] An elastic assembly 8 is connected to the voice coil bobbin 43 and the support stand 7, the elastic assembly 8 includes a second circuit board 81 and a supporting vibration membrane 82 connected to the second circuit board 81, and the second voice coil 42 is electrically connected to the second circuit board 81, specifically, the coaxial speaker 100 further includes a second terminal 92 connected to the second circuit board 81, and the second voice coil 42 is electrically connected to the second circuit board 81 by the second terminal 92. In this embodiment, the number of elastic assemblies 8 is two, and is arranged in the minor axis direction of the coaxial speaker 100, and may be determined according to circumstances in other embodiments.

[0029] The voice coil bobbin 43 includes a skeletal flat portion 431 that is attached to the second dome 412, a first extension portion 432 that is bent and extends from one end of the skeletal flat portion 431 toward the second circuit board 81 and connected to the second circuit board 81, and a second extension portion 433 that is bent and extends from the other end of the skeletal flat portion 431 toward the second voice coil 42 and connected to the second voice coil 42.

[0030] The coaxial speaker of the present invention comprises a frame, a magnetic circuit system fixed below the frame, a first vibration system fixed inside the frame, and a second vibration system fixed outside the frame and arranged to surround the first vibration system, the first vibration system being arranged coaxially with the second vibration system, the first vibration system comprising a first vibration membrane and a first voice coil for driving the vibration sound of the first vibration membrane, the second vibration system comprising a second vibration membrane and a second voice coil for driving the vibration sound of the second vibration membrane, the magnetic circuit system being provided with a first magnetic gap and a second magnetic gap located outside the first magnetic gap, the first voice coil being at least partially inserted in the first magnetic gap, and the second voice coil being at least partially inserted in the second magnetic gap, the first vibration membrane being used to produce high-pitched sounds, and the second vibration membrane being used to produce low-pitched sounds. The coaxial speaker of the present invention provides a bass effect by installing a ring-shaped bass vibration system, and a treble vibration system is installed inside the bass vibration system to provide a treble effect, so that the bass and treble form a coaxial full-band speaker and provide high-quality acoustic effects; and the two voice coils share part of the magnetic circuit system, which further reduces the cost, improves the acoustic performance, and reduces the overall height of the coaxial speaker of the present invention.

[0031] The above is only an embodiment of the present invention, and those skilled in the art to which the present invention pertains may further improve it without departing from the creative concept of the present invention, but it should be understood that all of these fall within the scope of protection of the present invention.

Claims

1. A coaxial speaker, The present invention comprises a frame, a magnetic circuit system fixed to a lower portion of the frame, a first vibration system fixed to an inner side of the frame, and a second vibration system fixed to an outer side of the frame and disposed so as to surround the first vibration system, the first vibration system is disposed coaxially with the second vibration system; The first vibration system includes a first vibrating membrane and a first voice coil that drives the first vibrating membrane to vibrate and generate sound. The second vibration system includes a second vibrating membrane and a second voice coil that drives the second vibrating membrane to vibrate and generate sound. The magnetic circuit system includes a first magnetic gap and a second magnetic gap located outside the first magnetic gap, the first voice coil is at least partially inserted within the first magnetic gap; the second voice coil is at least partially inserted within the second magnetic gap; The first vibrating membrane is used to produce high-pitched sounds, the second diaphragm is used to produce low-pitched sounds; a magnetic circuit system including a magnetic yoke, the magnetic yoke including a side wall surrounding an accommodation space and a bottom wall formed by folding and extending from one end of the side wall; the magnetic circuit system further including a first magnetic steel assembly installed on one side of the magnetic yoke and a second magnetic steel assembly installed on the other side of the magnetic yoke, the first magnetic steel assembly including a first magnetic steel, the first magnetic gap being formed between the first magnetic steel and the side wall of the magnetic yoke, and the second magnetic steel assembly including a second magnetic steel and a third magnetic steel located outside the second magnetic steel and forming the second magnetic gap with the second magnetic steel.

2. 2. The coaxial speaker according to claim 1, further comprising an insert surrounded by the magnetic circuit system and a first circuit board fixed to the insert, the insert having a first terminal passing therethrough, and the first voice coil electrically connected to the first circuit board via the first terminal.

3. 3. The coaxial speaker of claim 2, further comprising: a support stand; and an elastic assembly connecting the second vibration system and the support stand, the elastic assembly comprising a second circuit board and a supporting vibration membrane connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

4. The coaxial speaker according to claim 2 , wherein the insert is accommodated within the accommodation space.

5. The coaxial speaker according to claim 3, characterized in that the first magnetic steel, the second magnetic steel, and the third magnetic steel are magnetized along the vibration direction of the coaxial speaker, the first magnetic steel and the second magnetic steel are installed opposite each other with the same pole, and the second magnetic steel and the third magnetic steel are magnetized in opposite directions.

6. 6. The coaxial speaker according to claim 5, wherein the first diaphragm includes a first dome portion and a first suspension surrounding the first dome portion, the first suspension is provided with a first fixing portion, the frame includes an inner wall, and the first fixing portion is fixed by being attached to the inner wall.

7. The coaxial speaker according to claim 6, wherein the first magnetic steel assembly includes a pole plate attached to the first magnetic steel, and the first fixing portion is partially sandwiched between the frame and the pole plate.

8. 6. The coaxial speaker of claim 5, wherein the frame has an outer wall, the second diaphragm has a second suspension, a second dome portion arranged to surround the second suspension, and a third suspension arranged to surround the second dome portion, the third suspension being fixed to the support stand, the second vibration system further has a voice coil bobbin connecting the second suspension, the second dome portion, the third suspension, and the second voice coil, and one end of the second suspension close to the first vibration system is fixed to the outer wall of the frame and / or the first magnetic steel.

9. 9. The coaxial speaker according to claim 8, wherein the voice coil bobbin comprises: a skeletal flat plate portion attached to the second dome portion; a first extension portion bent from the skeletal flat plate portion toward the second circuit board and connected to the second circuit board; and a second extension portion bent from the skeletal flat plate portion toward the second voice coil and connected to the second voice coil.

10. 3. A coaxial speaker as claimed in claim 2, wherein said insert has a leak passage therethrough.

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