Coaxial Speaker

Abstract

The present invention provides a coaxial speaker. [Solution] A coaxial speaker includes a frame, a magnetic circuit system fixed below the frame, a first vibration system fixed inside the frame, and a second vibration system installed outside 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, the second vibration system including a second vibration membrane and a second voice coil, 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, and the second vibration membrane being an integrated silicone rubber vibration membrane. The bass and treble of the coaxial speaker form a coaxial full-band speaker, providing high-quality acoustic effects. The bass membrane and treble membrane are designed and molded separately. The material and thickness of the treble and bass membranes can be adjusted separately according to the different characteristics of the bass and treble.

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 is a speaker in which a treble speaker unit and a bass speaker unit are integrated and installed 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 sides of the coaxial speaker, that is, the sound sources of the two speaker units have different sound directions.

[0003] In the related art, the treble speaker unit and the wattage speaker unit of a coaxial speaker are located on the same side of the coaxial speaker, and the sound membrane of the treble unit and the sound membrane of the wattage unit are both pressed and formed from the same material, so that the product performance is uniform and difficult to adjust.

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

[0005] An object of the present invention is to provide a coaxial speaker in which the treble and bass diaphragms can be flexibly adjusted. [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 below the frame; a first vibration system fixed inside the frame; and a second vibration system installed outside 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 that drives the first vibration membrane to vibrate and produce sound, the second vibration system including a second vibration membrane and a second voice coil that drives the second vibration membrane to vibrate and produce sound, 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, 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, the second vibration membrane being used to produce low-pitched sounds, and the second vibration membrane being an integrated silicone rubber vibration membrane.

[0007] Preferably, the first diaphragm is a one-piece silicone rubber diaphragm.

[0008] Preferably, the first vibrating membrane includes a first dome and a first suspension surrounding the first dome, and the first dome is integrally formed with the first suspension.

[0009] Preferably, the second vibrating membrane includes a second suspension, a second dome arranged to surround the second suspension, and a third suspension arranged to surround the second dome, and the second suspension, the second dome and the third suspension are integrally molded.

[0010] Preferably, the second vibrating membrane includes a second suspension, a second dome arranged to surround the second suspension, a third suspension arranged to surround the second dome, and a voice coil bobbin connecting the second suspension, the second dome, the third suspension, and the second voice coil, the second suspension, the second dome, and the third suspension being arranged at a distance from each other, and the second suspension, the second dome, the third suspension, and the voice coil bobbin being integrally molded.

[0011] Preferably, the magnetic circuit system includes a magnetic yoke, the magnetic yoke including a side wall that is surrounded to form an accommodating space, and a bottom wall that is formed by folding and extending from one end of the side wall that is away from the first vibration system, 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 and a pole plate stacked on the 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 that is located outside the second magnetic steel and forms the second magnetic gap together with the second magnetic steel.

[0012] Preferably, the pole plate is integrally formed with the frame.

[0013] Preferably, the coaxial speaker further includes an insert disposed within 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.

[0014] Preferably, the coaxial speaker includes a support stand and an elastic assembly connecting the voice coil bobbin and the support stand, the elastic assembly including a second circuit board and a supporting diaphragm connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

[0015] Preferably, the voice coil bobbin includes a skeletal flat plate portion attached to the second dome, a first extension portion bent and extending from the skeletal flat plate portion toward the second circuit board and connected to the second circuit board, and a second extension portion bent and extending from the skeletal flat plate portion toward the second voice coil and connected to the second voice coil. Effect of the Invention

[0016] Compared with the related art, the coaxial speaker of the present invention includes a frame, a magnetic circuit system fixed under the frame, a first vibration system fixed inside the frame, and a second vibration system installed 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 includes a first vibration membrane and a first voice coil that drives the first vibration membrane to vibrate and produce sound, the second vibration system includes a second vibration membrane and a second voice coil that drives the second vibration membrane to vibrate and produce 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 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, the second vibration membrane is used to produce low-pitched sounds, and the second vibration membrane is an integrated silicone rubber vibration membrane. The coaxial speaker of the present invention provides low-pitched acoustic effects by installing a ring-shaped bass vibration system, and a treble vibration system is installed inside the bass vibration system to provide treble acoustic effects. The bass and treble form a coaxial full-range speaker, providing high-quality acoustic effects, the bass membrane can be integrally molded with a silicone rubber material, and the treble membrane can be integrally molded with a silicone rubber material, so that the bass membrane and the treble membrane can be designed and molded separately, and the material and thickness of the treble membrane can be independently adjusted according to the different characteristics of the bass and treble, and it is more flexible in use. [Brief description of the drawings]

[0017] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following briefly introduces drawings necessary for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative efforts. [Figure 1] 1 is a schematic diagram of a three-dimensional structure of a coaxial speaker in a first embodiment 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 a schematic diagram showing the three-dimensional structure of a partial member of the coaxial speaker shown in FIG. 1. [Figure 4] FIG. 2 is an exploded view of the coaxial speaker shown in FIG. [Diagram 5] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 6] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 7] FIG. 4 is a cross-sectional view of a coaxial speaker according to a second embodiment of the present invention. 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 obviously, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative labor shall fall within the scope of protection of the present invention.

[0019] Also, as shown in FIGS. 1 to 6, a first embodiment of 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 installed 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 installed 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 substantially rectangular, and the frame 1 includes an upper wall surface 11, a lower wall surface 12 disposed opposite the upper wall surface 11, and an outer wall surface 13 connecting the upper wall surface 11 and the lower wall surface 12, and the first vibration system 3 is fixed to the upper wall surface 11 of the frame and extends to the outer wall surface 13. The second vibration system 4 is disposed at a distance from the outer wall surface 13 of the frame.

[0021] The magnetic circuit system 2 includes a magnetic yoke 21, a first magnetic steel assembly 22 installed on one side of the magnetic yoke 21, and a second magnetic steel assembly 23 installed on the other side of the magnetic yoke 21. The first magnetic steel assembly 22 is installed coaxially with the second magnetic steel assembly 23. The magnetic yoke 21 includes a side wall 211 that is surrounded to form an accommodating space 210, and a bottom wall 212 that is bent and extended from one end of the side wall 211 that is away from the first vibration system 3. The first magnetic steel assembly 22 includes a first magnetic steel 221 and a pole plate 222 installed on the first magnetic steel 221, and a first magnetic gap 220 is formed between the first magnetic steel 221 and the side wall 211 of the magnetic yoke 21. In this embodiment, the pole plate 222 and the frame 1 are separate structures, and the pole plate 222 and the frame 1 can be structurally abutted and fixed to each other. The first magnetic steel 221 is placed on a bottom wall 212 of the magnetic yoke 21. The second magnetic steel assembly 23 includes a second magnetic steel 231, a third magnetic steel 232 forming a second magnetic gap 230 together with the second magnetic steel 231, and a magnetic conductive plate 233 stacked above the third magnetic steel 232, and the bottom wall 212 of the magnetic yoke 21 is stacked above the second magnetic steel 231, and the first magnetic steel 221 is placed directly opposite the second magnetic steel 232. The magnetic circuit system 2 further includes a yoke 24 on which the second magnetic steel 231 and the third magnetic steel 232 are placed.

[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 installed with the same poles facing each other, and the second magnetic steel 231 and the third magnetic steel 232 have opposite magnetization directions. 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 includes a first vibrating membrane 31 and a first voice coil 32 that drives the first vibrating membrane 31 to vibrate and generate sound. The first voice coil 32 is at least partially inserted in the first magnetic gap 220. The first vibrating membrane 31 is an integrated silicone rubber vibrating membrane. Naturally, the first vibrating membrane 31 may be manufactured by a general film pressing method. The first vibrating membrane 31 is used to generate high-pitched sounds, and the sound generation direction of the first vibrating membrane 31 is upward along the vibration direction, that is, the sound is generated from the front of the coaxial speaker 100. The first vibrating membrane 31 includes a first dome 311 and a first suspension 312 that is installed around the first dome 311. The first dome 311 includes a first dome portion 3111 and a second dome portion 3112 that is fixed to the outer periphery of the first dome portion 3111. The first suspension 312 includes a first fixing portion 3121, which is attached to and extends over an upper wall surface 11 of the frame 1 to partially cover an outer wall surface 13 of the frame 1. The first dome 311 and the first suspension 312 may be integrally molded from a silicone rubber material.

[0024] The second vibration system 4 includes a second vibrating membrane 41, a second voice coil 42 that drives the second vibrating membrane 41 to vibrate and generate sound, and a voice coil bobbin 43 that connects the second vibrating membrane 41 and the second voice coil, and the second vibrating membrane 41 is an integrated silicone rubber vibrating membrane. The second voice coil 42 is at least partially inserted in the second magnetic gap 230, and the second vibrating membrane 41 is used for generating low-pitched sounds. The sound generation direction of the second vibrating membrane 41 is upward along the vibration direction, i.e., it generates sound from the front of the coaxial speaker 100. The second vibrating membrane 41 includes a second suspension 411, a second dome 412 surrounding the second suspension 411, a third suspension 413 surrounding the second dome 412, and an extension arm 414 extending upward from a side of the second suspension 411 away from the second dome 412, and one end of the extension arm 414 is in a suspended state. In another embodiment, the second suspension 411, the second dome 412, and the third suspension 413 may be spaced apart from each other, and the voice coil bobbin 43 is integrally formed with the second suspension 411, the second dome 412, the third suspension 413, and the extension arm 414, and connects the second suspension 411, the second dome 412, the third suspension 413, and the extension arm 414 to the second voice coil 42. In another embodiment, the second suspension 411, the second dome 412, the third suspension 413, and the extension arm 414 may be connected to each other, in which case the second suspension 411, the second dome 412, the third suspension 413, and the extension arm 414 are integrally formed. The second suspension 411 has one end adjacent to the first vibrating membrane 31 fixed to the first magnetic steel 221, and the third suspension 413 includes a second fixing portion 4131.

[0025] The yoke 24 is provided with a recess 241 at a location corresponding to the second voice coil 42, thereby providing a sufficient vibration space for the second voice coil 42.

[0026] The insert 5 is installed in an accommodating space 210 formed by surrounding side walls 211 of the magnetic yoke 21, the first circuit board 6 is attached to the outer surface of the 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 is electrically connected to the first circuit board 6 via 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 fixed portion 4131 of the third suspension 413 is fixedly connected to the support stand 7. Specifically, the second fixed portion 4131 covers the upper surface and part of the outer surface of the support stand 7.

[0028] The elastic assembly 8 connects 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, 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 via the second terminal 92. In this embodiment, there are two elastic assemblies 8, and they are installed in the short direction of the coaxial speaker 100, and in other embodiments, they are determined according to circumstances.

[0029] The voice coil bobbin 43 includes a skeletal flat portion 431 attached to the second dome 412, a first extension portion 432 bent and extending from the skeletal flat portion 431 toward the second circuit board 81 and connected to the second circuit board 81, and a second extension portion bent and extending from the skeletal flat portion 431 toward the second voice coil 42 and connected to the second voice coil 42.

[0030] As shown in FIG. 7, the second embodiment of the present invention has a basically same structure of a coaxial speaker as the first embodiment, and the difference is that the pole plate 222' of the coaxial speaker in the second embodiment is integrally molded with the frame 1'.

[0031] Compared with the related art, the coaxial speaker of the present invention includes a frame, a magnetic circuit system fixed under the frame, a first vibration system fixed inside the frame, and a second vibration system installed 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 includes a first vibration membrane and a first voice coil that drives the first vibration membrane to vibrate and produce sound, the second vibration system includes a second vibration membrane and a second voice coil that drives the second vibration membrane to vibrate and produce 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 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, the second vibration membrane is used to produce low-pitched sounds, and the second vibration membrane is an integrated silicone rubber vibration membrane. The coaxial speaker of the present invention provides low-pitched acoustic effects by installing a ring-shaped bass vibration system, and a treble vibration system is installed inside the bass vibration system to provide treble acoustic effects, so that the bass and treble form a coaxial full-band speaker to provide high-quality acoustic effects. The bass membrane can also be integrally molded with a silicone rubber material, and the treble membrane can be integrally molded with a silicone rubber material, so that the bass membrane and the treble membrane can be designed and molded separately, and the material and thickness of the treble membrane can be independently adjusted according to the different characteristics of the bass and treble, and it is more flexible in use.

[0032] The above is only an embodiment of the present invention, and those skilled in the art may further improve it without departing from the creative concept of the present invention, and it should be understood that all of these fall within the scope of protection of the present invention.

Claims

1. A coaxial speaker comprising: 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 installed outside 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 first vibration membrane to vibrate and produce sound, the second vibration system including a second vibration membrane and a second voice coil for driving the second vibration membrane to vibrate and produce sound, 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 produce high-pitched sounds, and the second vibration membrane being used to produce low-pitched sounds, the first vibration membrane being an integrated silicone rubber vibration membrane, and the second vibration membrane being an integrated silicone rubber vibration membrane, the magnetic circuit system includes a magnetic yoke, the magnetic yoke including a side wall that is surrounded to form an accommodating space, and a bottom wall that is formed by bending and extending from one end of the side wall that is away from the first vibration system, 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 and a pole plate that is laminated on the first magnetic steel, the first magnetic gap is formed between the first magnetic steel and the side wall of the magnetic yoke, the second magnetic steel assembly including a second magnetic steel and a third magnetic steel that is located outside the second magnetic steel and forms the second magnetic gap together with the second magnetic steel, A coaxial speaker, wherein the second diaphragm is ring-shaped.

2. 2. The coaxial speaker according to claim 1, wherein the first diaphragm includes a first dome and a first suspension surrounding the first dome, the first dome being integrally molded with the first suspension.

3. 2. The coaxial speaker according to claim 1, wherein the second diaphragm includes a second suspension, a second dome arranged to surround the second suspension, and a third suspension arranged to surround the second dome, and the second suspension, the second dome, and the third suspension are integrally molded.

4. 2. The coaxial speaker according to claim 1, wherein the second diaphragm includes a second suspension, a second dome arranged to surround the second suspension, a third suspension arranged to surround the second dome, and a voice coil bobbin connecting the second suspension, the second dome, the third suspension, and the second voice coil, the second suspension, the second dome, and the third suspension being arranged at an interval from each other, and the second suspension, the second dome, the third suspension, and the voice coil bobbin being integrally molded.

5. 2. The coaxial speaker according to claim 1, wherein the pole plate is integrally formed with the frame.

6. 5. The coaxial speaker according to claim 4, further comprising an insert disposed within 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.

7. 7. The coaxial speaker of claim 6, wherein the coaxial speaker includes a support stand and an elastic assembly connecting the voice coil bobbin and the support stand, the elastic assembly including a second circuit board and a supporting diaphragm connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

8. 8. The coaxial speaker according to claim 7, wherein the voice coil bobbin includes: a skeletal flat plate portion bonded to the second dome; a first extension portion bent and extending from the skeletal flat plate portion toward the second circuit board and connected to the second circuit board; and a second extension portion bent and extending from the skeletal flat plate portion toward the second voice coil and connected to the second voice coil.

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