Three-frequency-division active sound box

Abstract

The utility model discloses a three-frequency-division active sound box, which relates to the technical field of sound equipment and comprises a box body, a first partition plate, a second partition plate and a third partition plate are fixed in the box body, a box body rear cavity is defined by the first partition plate and the inner wall of the box body, a control module is arranged in the box body rear cavity, and a box body front cavity is defined by the second partition plate and the inner wall of the box body. A third partition plate is arranged in the box body, a mid-high pitch coaxial unit is arranged in the box body and is mounted on the box body through a first mounting hole, the third partition plate divides an inner cavity of the box body into a first side cavity and a second side cavity, a bass unit is arranged in each of the first side cavity and the second side cavity, and the bass units are mounted on the box body through second mounting holes; the three-frequency-division active sound box is reasonable in internal pattern distribution, and can effectively avoid interference among sounds with different frequencies.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, in particular to a three-way active speaker. Background Art

[0002] In traditional three-way active speakers, the high-frequency unit, the mid-frequency unit and the low-frequency unit are independent and separated. When the audio is played, sounds of different frequencies may interfere with each other. At present, there are also some speakers that adopt the coaxial combination of units to reduce sound interference. For example, Chinese Patent CN207753854U discloses a three-way speaker, in which the high-frequency unit and the mid-frequency unit are coaxially arranged. Although it reduces the mutual interference between the high and mid frequencies, since the mid-high frequency unit and the low-frequency unit are in the same space and the speakers face the same direction, it is impossible to avoid the sound interference between the mid-high frequency unit and the low-frequency unit. Summary of the Utility Model

[0003] Aiming at the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a three-way active speaker to solve the problem of sound interference between the mid-high frequency unit and the low-frequency unit.

[0004] The purpose of the utility model is achieved by adopting the following technical solutions:

[0005] A three-way active speaker includes a box body. A first partition, a second partition and a third partition are fixed in the box body. The first partition and the inner wall of the box body enclose a rear cavity of the box body. The rear cavity of the box body is located at the rear side of the inner cavity of the box body and a control module is installed therein. The second partition and the inner wall of the box body enclose a front cavity of the box body. The front cavity of the box body is located at the front side of the inner cavity of the box body and a mid-high frequency coaxial unit is provided therein. A first mounting hole is opened on the front side of the box body. The mid-high frequency coaxial unit is installed on the box body through the first mounting hole. The third partition is fixed between the first partition and the second partition. The third partition divides the inner cavity of the box body except for the rear cavity of the box body and the front cavity of the box body into a first side cavity and a second side cavity. The first side cavity and the second side cavity are respectively located on the left side and the right side of the inner cavity of the box body and a bass unit is provided in each of them. Second mounting holes are respectively opened on the left side and the right side of the box body. The bass unit is installed on the box body through the second mounting hole.

[0006] Further, the box body includes a top plate, a bottom plate, a left side plate, a right side plate, a front side plate and a rear side plate. The left side plate and the right side plate are arranged in parallel. The tops are respectively fixed to the left and right sides of the top plate and the bottoms are respectively fixed to the left and right sides of the bottom plate. The tops of the front side plate and the rear side plate are respectively fixed to the front and rear sides of the top plate and the bottoms are respectively fixed to the front and rear sides of the bottom plate.

[0007] Further, the first mounting hole is opened on the front side plate, and the two second mounting holes are respectively opened on the left side plate and the right side plate.

[0008] Further, the front side plate includes a first connecting plate and a second connecting plate fixedly connected in sequence. Both sides of the first connecting plate are respectively fixedly connected to the left side plate and the right side plate, the bottom is fixedly connected to the bottom plate, the top is fixedly connected to the second connecting plate. Both sides of the second connecting plate are respectively fixedly connected to the left side plate and the right side plate, the top is fixedly connected to the top plate. The first mounting hole is opened on the second connecting plate, and the second connecting plate inclines outward relative to the top plate.

[0009] Further, the rear cavity of the box body is surrounded by the first partition board, the left side plate, the right side plate, the top plate, the bottom plate and the rear side plate, and the front cavity of the box body is surrounded by the second partition board, the left side plate, the right side plate, the top plate and the front side plate.

[0010] Further, the rear side plate is detachable on the box body. The rear side plate is L-shaped, and a plurality of adjustment buttons are provided on the rear side plate, and the adjustment buttons are connected to the control module.

[0011] Further, the bass unit includes a frame, a magnetic circuit system, a voice coil, a wave handle, a honeycomb diaphragm plate and an elastic suspension edge. The magnetic circuit system is fixed at the bottom of the frame. A magnetic gap is provided in the magnetic circuit system. The voice coil is arranged in the magnetic gap. The wave handle is fixedly sleeved in the voice coil. The top of the wave handle is fixed at the bottom of the honeycomb diaphragm plate. The elastic suspension edge is fixedly connected to the honeycomb diaphragm plate and the top of the frame. The honeycomb diaphragm plate includes a flat bottom plate, a flat top plate and a honeycomb hole layer fixed between the flat bottom plate and the flat top plate.

[0012] Further, the bass unit further includes a bracket and a spider. The spider is arranged between the frame and the magnetic circuit system. The outer side of the spider is fixed to the lower part of the frame, and the inner side of the spider does not contact the magnetic circuit system. The bottom of the bracket is fixed to the inner side of the spider, and the top of the bracket is fixedly supported at the bottom of the honeycomb diaphragm plate.

[0013] Further, there are a plurality of brackets. The tops of the plurality of brackets are commonly fixed on the upper ring frame, and the bottoms of the plurality of brackets are commonly fixed on the lower ring frame. The upper ring frame is fixed to the bottom edge of the flat top plate, and the lower ring frame is fixed to the inner side of the spider.

[0014] Further, a handle is fixed to the top of the box body.

[0015] The beneficial effects of the present utility model are:

[0016] By setting the first partition board, the second partition board and the third partition board, the inner cavity of the box is divided into the rear cavity of the box, the front cavity of the box, the first side cavity and the second side cavity. A control module is installed in the rear cavity of the box, a mid-high frequency coaxial unit is installed in the front cavity of the box, and bass units are installed in the first side cavity and the second side cavity. The internal layout of the box is reasonably distributed, and each unit has an independent chamber, which can effectively avoid the interference between sounds of different frequencies. At the same time, the mid-high frequency coaxial unit is adopted to ensure the acoustic phase consistency. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the three-way active speaker of the present utility model;

[0018] Figure 2 is an exploded view of the structure of the three-way active speaker of the present utility model;

[0019] Figure 3 is a sectional view of the box body in the present utility model;

[0020] Figure 4 is a schematic structural diagram of the bass unit in the present utility model;

[0021] Figure 5 is a sectional view of the bass unit in the present utility model;

[0022] Figure 6 is a schematic structural diagram of the bracket in the present utility model;

[0023] Figure 7 is an exploded view of the structure of the honeycomb diaphragm plate in the present utility model.

[0024] In the figure: 10, box body; 11, top plate; 12, bottom plate; 13, left side plate; 14, right side plate; 15, front side plate; 1501, first connecting plate; 1502, second connecting plate; 16, rear side plate; 20, first partition board; 30, second partition board; 40, third partition board; 50, rear cavity of the box; 60, control module; 70, front cavity of the box; 80, mid-high frequency coaxial unit; 90, first mounting hole; 100, first side cavity; 110, second side cavity; 120, second mounting hole; 130, adjustment button; 140, handle; 150, bass unit; 151, basin frame; 152, magnetic circuit system; 153, voice coil; 154, wave handle; 155, honeycomb diaphragm plate; 1551, flat bottom plate; 1552, flat top plate; 1553, honeycomb hole layer; 1554, support plate; 156, elastic suspension edge; 157, magnetic gap; 158, bracket; 159, elastic wave; 1510, upper ring frame; 1511, lower ring frame. Detailed Embodiments

[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer and more understandable, the following further describes the utility model in conjunction with the drawings and embodiments.

[0026] As Figures 1 to 7 shown, the utility model provides a three-way active speaker, which includes a box body 10. A first partition 20, a second partition 30 and a third partition 40 are fixed in the box body 10. The first partition 20 and the inner wall of the box body 10 enclose a rear cavity 50 of the box body. The rear cavity 50 of the box body is located at the rear side of the inner cavity of the box body 10 and a control module 60 is installed therein. The second partition 30 and the inner wall of the box body 10 enclose a front cavity 70 of the box body. The front cavity 70 of the box body is located at the front side of the inner cavity of the box body 10 and a mid-high frequency coaxial unit 80 is provided therein. A first mounting hole 90 is opened on the front side of the box body 10. The mid-high frequency coaxial unit 80 is mounted on the box body 10 through the first mounting hole 90. The third partition 40 is fixed between the first partition 20 and the second partition 30. The third partition 40 divides the inner cavity of the box body 10 except for the rear cavity 50 of the box body and the front cavity 70 of the box body into a first side cavity 100 and a second side cavity 110. The first side cavity 100 and the second side cavity 110 are respectively located on the left side and the right side of the inner cavity of the box body 10 and a bass unit 150 is provided therein respectively. Second mounting holes 120 are respectively opened on the left side and the right side of the box body 10. The bass unit 150 is mounted on the box body 10 through the second mounting holes 120.

[0027] By providing the first partition 20, the second partition 30 and the third partition 40, the inner cavity of the box body 10 is divided into the rear cavity 50 of the box body, the front cavity 70 of the box body, the first side cavity 100 and the second side cavity 110. The control module 60 is installed in the rear cavity 50 of the box body, the mid-high frequency coaxial unit 80 is installed in the front cavity 70 of the box body, the bass units 150 are installed in the first side cavity 100 and the second side cavity 110. The internal layout of the box body 10 is reasonably distributed, and each unit has an independent chamber, which can effectively avoid interference between sounds of different frequencies. At the same time, the mid-high frequency coaxial unit 80 is adopted to ensure consistent acoustic phase.

[0028] The box body 10 includes a top plate 11, a bottom plate 12, a left side plate 13, a right side plate 14, a front side plate 15 and a rear side plate 16. The left side plate 13 and the right side plate 14 are arranged in parallel. The tops are respectively fixed to the left and right sides of the top plate 11 and the bottoms are respectively fixed to the left and right sides of the bottom plate 12. The tops of the front side plate 15 and the rear side plate 16 are respectively fixed to the front and rear sides of the top plate 11 and the bottoms are respectively fixed to the front and rear sides of the bottom plate 12.

[0029] The first mounting hole 90 is opened on the front side plate 15, and the two second mounting holes 120 are respectively opened on the left side plate 13 and the right side plate 14.

[0030] The front side plate 15 includes a first connecting plate 1501 and a second connecting plate 1502 which are fixedly connected in sequence. The two sides of the first connecting plate 1501 are respectively fixedly connected to the left side plate 13 and the right side plate 14, the bottom is fixedly connected to the bottom plate 12, and the top is fixedly connected to the second connecting plate 1502. The two sides of the second connecting plate 1502 are respectively fixedly connected to the left side plate 13 and the right side plate 14, and the top is fixedly connected to the top plate 11. The first mounting hole 90 is opened on the second connecting plate 1502. The second connecting plate 1502 inclines outward relative to the top plate 11. The mid-high frequency coaxial unit 80 is mounted on the second connecting plate 1502, and the two bass units 150 are respectively mounted on the left side plate 13 and the right side plate 14. This mounting position and mounting angle are more in line with the angle at which most people listen while standing.

[0031] The rear cavity 50 of the box body is surrounded by the first partition 20, the left side plate 13, the right side plate 14, the top plate 11, the bottom plate 12 and the rear side plate 16. The second partition 30 includes a partition A and a partition B which are fixedly connected to each other. The top of the partition A is fixed on the top plate 11, the bottom is fixed to the partition B, and the bottom of the partition B is fixed to the lower part of the front side plate 15. Thus, the front cavity 70 of the box body is surrounded by the second partition 30, the left side plate 13, the right side plate 14, the top plate 11 and the front side plate 15.

[0032] The rear side plate 16 is detachable on the box body 10. The rear side plate 16 is L-shaped, and a plurality of adjustment buttons 130 are provided on the rear side plate 16. The adjustment buttons 130 are connected to the control module 60. The control module 60 includes a power amplifier, a processor, an effector, etc. The mid-high frequency coaxial unit 80 and the bass unit 150 are both connected to the control module 60.

[0033] A handle 140 is fixed to the top of the box body 10.

[0034] In the mid-high frequency coaxial unit 80, the high frequency and the middle frequency share a set of magnetic circuit structures. The two magnetic pores are respectively located at the top and the bottom of the magnetic circuit structure. The high-frequency voice coil moves in the bottom magnetic pore, and the middle-frequency voice coil moves in the top magnetic pore. This mid-high frequency coaxial unit 80 adopts the prior art. Specifically, reference can be made to the first frequency division structure and the second frequency division structure in the three-way speaker disclosed in Chinese Patent CN21672170U.

[0035] The woofer unit 150 includes a chassis 151, a magnetic circuit system 152, a voice coil 153, a wave handle 154, a honeycomb diaphragm plate 155, and an elastic suspension edge 156. The magnetic circuit system 152 is fixed to the bottom of the chassis 151. The magnetic circuit system 152 can adopt the existing technology and will not be elaborated here. A magnetic gap 157 is provided in the magnetic circuit system 152. The voice coil 153 is arranged in the magnetic gap 157. A wave handle 154 is fixedly sleeved inside the voice coil 153. The top of the wave handle 154 is fixed to the bottom of the honeycomb diaphragm plate 155. The elastic suspension edge 156 is fixedly connected to the bottom of the honeycomb diaphragm plate 155 and the top of the chassis 151. The honeycomb diaphragm plate 155 includes a flat bottom plate 1551, a flat top plate 1552, and a honeycomb hole layer 1553 fixed between the flat bottom plate 1551 and the flat top plate 1552.

[0036] The honeycomb diaphragm plate 155 adopts a flat plate shape, which can effectively reduce the volume of the woofer unit 150, making the structure of the woofer unit 150 more compact. At the same time, the honeycomb diaphragm plate 155 is provided with a multi-layer structure, increasing the strength of the honeycomb diaphragm plate 155, ensuring that the honeycomb diaphragm plate 155 will not deform when vibrating up and down, and ensuring the sound quality of the woofer unit 150.

[0037] The woofer unit 150 further includes a bracket 158 and a spider 159. The spider 159 is arranged between the chassis 151 and the magnetic circuit system 152. The outer side of the spider 159 is fixed to the lower part of the chassis 151, and the inner side of the spider 159 does not contact the magnetic circuit system 152. The bottom of the bracket 158 is fixed to the inner side of the spider 159, and the top of the bracket 158 is fixedly supported on the bottom of the honeycomb diaphragm plate 155. Under the supporting action of the spider 159, the bracket 158 can move up and down following the honeycomb diaphragm plate 155. The bracket 158 provides further support for the honeycomb diaphragm plate 155, strengthening the stability of the honeycomb diaphragm plate 155.

[0038] There are multiple brackets 158. The tops of the multiple brackets 158 are commonly fixed to an upper ring frame 1510, and the bottoms of the multiple brackets 158 are commonly fixed to a lower ring frame 1511. The upper ring frame 1510 is fixed to the bottom edge of the flat bottom plate 1551, and the lower ring frame 1511 is fixed to the inner side of the spider 159. The upper ring frame 1510 and the lower ring frame 1511 fix all the brackets 158 together to form an integral structure, ensuring that all the brackets 158 can move up or down simultaneously, and ensuring the stable up and down vibration of the honeycomb diaphragm plate 155.

[0039] The honeycomb hole layer 1553 includes a plurality of support plates 1554, and the support plates 1554 are fixed between the flat top plate 1552 and the flat bottom plate 1551. The support plates 1554 enclose a honeycomb hole shape. Honeycomb holes are provided in the middle layer of the honeycomb diaphragm plate 155. On the premise of ensuring the strength of the honeycomb diaphragm plate 155, the weight of the honeycomb diaphragm plate 155 is reduced to ensure the smooth vibration of the honeycomb diaphragm plate 155. On the premise of ensuring the strength and weight of the honeycomb diaphragm plate 155, the honeycomb holes can be regular polygon holes or round holes, or holes with irregular shapes.

[0040] The utility model adopts a medium and high frequency coaxial unit 80 to ensure the acoustic phase consistency, and adopts a bass unit 150 with a honeycomb diaphragm plate 155 to ensure a more compact structure. The inner cavity of the box body 10 is reasonably divided by a plurality of partition plates, so that each unit has an independent chamber, and the interference between sounds of different frequencies can be effectively avoided.

[0041] The above are only the preferred embodiments of the utility model, and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall fall within the protection scope of the utility model.

Claims

1. A three-way active speaker, characterized in that: The invention comprises a box (10), wherein a first partition plate (20), a second partition plate (30) and a third partition plate (40) are fixed inside the box (10), wherein the first partition plate (20) and the inner wall of the box (10) form a box rear cavity (50), wherein the box rear cavity (50) is located at the rear side of the inner cavity of the box (10) and a control module (60) is installed therein, wherein the second partition plate (30) and the inner wall of the box (10) form a box front cavity (70), wherein the box front cavity (70) is located at the front side of the inner cavity of the box (10) and a mid-high frequency coaxial unit (80) is installed therein, and a first mounting hole (90) is opened on the front side of the box (10), wherein the mid-high frequency coaxial unit (80) is installed through the first mounting hole (90). 0) is installed on the box (10), the third partition (40) is fixed between the first partition (20) and the second partition (30), the third partition (40) divides the inner cavity of the box (10) except the rear cavity (50) and the front cavity (70) of the box into a first side cavity (100) and a second side cavity (110), the first side cavity (100) and the second side cavity (110) are respectively located on the left and right sides of the inner cavity of the box (10) and a bass unit (150) is respectively provided therein, the left and right sides of the box (10) are respectively provided with second mounting holes (120), and the bass unit (150) is mounted on the box (10) through the second mounting holes (120).

2. A three-way active speaker according to claim 1, characterized in that: The box body (10) comprises a top plate (11), a bottom plate (12), a left side plate (13), a right side plate (14), a front side plate (15) and a rear side plate (16); the left side plate (13) and the right side plate (14) are arranged in parallel, the tops of which are respectively fixed to the left and right sides of the top plate (11) and the bottoms of which are respectively fixed to the left and right sides of the bottom plate (12); the tops of the front side plate (15) and the rear side plate (16) are respectively fixed to the front and rear sides of the top plate (11) and the bottoms of which are respectively fixed to the front and rear sides of the bottom plate (12).

3. A three-way active speaker according to claim 2, characterized in that: The first mounting hole (90) is formed on the front side plate (15), and the two second mounting holes (120) are formed on the left side plate (13) and the right side plate (14), respectively.

4. The three-way active speaker according to claim 2, characterized in that: The front side plate (15) comprises a first connecting plate (1501) and a second connecting plate (1502) which are fixedly connected in sequence, the first connecting plate (1501) having two sides fixedly connected to the left side plate (13) and the right side plate (14) respectively, the bottom being fixedly connected to the bottom plate (12), and the top being fixedly connected to the second connecting plate (1502), the second connecting plate (1502) having two sides fixedly connected to the left side plate (13) and the right side plate (14) respectively, and the top being fixedly connected to the top plate (11), the first mounting hole (90) being provided on the second connecting plate (1502), and the second connecting plate (1502) being inclined outwardly relative to the top plate (11).

5. A three-way active speaker according to claim 4, characterized in that: The rear chamber (50) of the box body is surrounded by the first partition plate (20), the left side plate (13), the right side plate (14), the top plate (11), the bottom plate (12) and the rear side plate (16), and the front chamber (70) of the box body is surrounded by the second partition plate (30), the left side plate (13), the right side plate (14), the top plate (11) and the front side plate (15).

6. The three-way active speaker according to claim 2, characterized in that: The rear side plate (16) is detachable from the box body (10); the rear side plate (16) is L-shaped; a plurality of adjustment buttons (130) are provided on the rear side plate (16); and the adjustment buttons (130) are connected to the control module (60).

7. The three-way active speaker according to claim 1, characterized in that: The bass unit (150) comprises a basin frame (151), a magnetic circuit system (152), a voice coil (153), a wave handle (154), a honeycomb diaphragm plate (155) and an elastic suspension edge (156); the magnetic circuit system (152) is fixed to the bottom of the basin frame (151); a magnetic gap (157) is provided in the magnetic circuit system (152); the voice coil (153) is provided in the magnetic gap (157); and a fixed sleeve is provided in the voice coil (153). The wave handle (154) is fixed at the bottom of the honeycomb diaphragm plate (155), the elastic hanging edge (156) is fixedly connected to the honeycomb diaphragm plate (155) and the top of the basin frame (151), and the honeycomb diaphragm plate (155) includes a flat bottom plate (1551), a flat top plate (1552), and a honeycomb hole layer (1553) fixed between the flat bottom plate (1551) and the flat top plate (1552).

8. The three-way active speaker according to claim 7, characterized in that: The bass unit (150) further includes a bracket (158) and a spring (159), wherein the spring (159) is arranged between the basin frame (151) and the magnetic circuit system (152), the outer side of the spring (159) is fixed to the lower part of the basin frame (151), the inner side of the spring (159) does not contact the magnetic circuit system (152), the bottom of the bracket (158) is fixed to the inner side of the spring (159), and the top of the bracket (158) is fixedly supported on the bottom of the honeycomb diaphragm plate (155).

9. The three-way active speaker according to claim 8, characterized in that: There are multiple brackets (158), the tops of the multiple brackets (158) are fixed together on an upper ring frame (1510), and the bottoms of the multiple brackets (158) are fixed together on a lower ring frame (1511), the upper ring frame (1510) is fixed to the bottom edge of the flat bottom plate (1551), and the lower ring frame (1511) is fixed to the inner side of the elastic wave (159).

10. The three-way active speaker according to claim 1, characterized in that: A handle (140) is fixed to the top of the box body (10).

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