Coaxial loudspeaker and sound box

Abstract

The utility model relates to a coaxial loudspeaker and a sound box, the coaxial loudspeaker comprises a loudspeaker main body and a guide plate, the loudspeaker main body comprises an alto loudspeaker and a tweeter, and the tweeter and the alto loudspeaker are coaxially arranged; the flow guide plate is arranged at the bottom of the loudspeaker body, an airflow channel is arranged on one side, facing the loudspeaker body, of the flow guide plate, the airflow channel is communicated with the air holes of the alto loudspeaker and the air holes of the tweeter, the airflow channel comprises a center channel and a plurality of branch channels, the center channel is located in the middle of the flow guide plate, and one end of each branch channel is communicated with the center channel. And the other end of the branch channel extends towards the edge of the guide plate and is communicated with the outside. According to the coaxial loudspeaker provided by the utility model, the airflow channel is arranged, the sub-channels are dispersed from the center of the guide plate to the periphery, each sub-channel can absorb noise of a specific frequency and efficiently absorb noise behind the unit, and up to 99% of noise generated in a space behind the unit is effectively reduced, so that purer and clearer real tone quality is brought.

Description

Technical Field

[0001] The utility model relates to a coaxial loudspeaker and a sound box. Background Art

[0002] Refer to Figures 11 - 13 When the existing mid / high-frequency loudspeaker moves up and down, air flow will be generated. When the air flow generated during the up and down movement of the mid / high-frequency loudspeaker passes through the ventilation port to exhaust the air flow, high-frequency air flow sound will be caused, and this air flow sound will cause the defect of mid-high frequency distortion.

[0003] Refer to Figure 12 In the midrange coaxial loudspeaker sound box chamber of the sound box, the sound radiation range of the speaker unit is not only in the front, but a part of the sound will be radiated to the back. Since the air flow generated during the up and down movement of the mid / high-frequency loudspeaker passes through the ventilation port to exhaust the air flow, high-frequency air flow sound will be caused. These air turbulences flow in the sound box, and it is easy to generate high-frequency distortion due to mutual air turbulences, thereby affecting the front sound radiation. Content of the Utility Model

[0004] The purpose of the utility model is to provide a coaxial loudspeaker and a sound box to solve the problem that the existing coaxial loudspeaker cannot reduce the vibration generated by low frequency.

[0005] To achieve the above purpose, a technical solution adopted by the utility model is:

[0006] A coaxial loudspeaker includes a loudspeaker main body and a flow guiding plate. The loudspeaker main body includes a midrange loudspeaker and a tweeter, and the tweeter is coaxially arranged with the midrange loudspeaker; the flow guiding plate is arranged at the bottom of the loudspeaker main body, and an air flow channel is arranged on one side of the flow guiding plate facing the loudspeaker main body. The air flow channel is communicated with the ventilation holes of the midrange loudspeaker and the ventilation holes of the tweeter. The air flow channel includes a central channel and a plurality of sub-channels. The central channel is located in the middle of the flow guiding plate. One end of the sub-channel is communicated with the central channel, and the other end of the sub-channel extends towards the edge of the flow guiding plate, and the sub-channel is communicated with the outside.

[0007] According to some preferred implementation aspects of the utility model, the central channel and the plurality of sub-channels are in a labyrinth shape.

[0008] According to some preferred implementation aspects of the present utility model, the sub-channels include a first channel, a second channel, and a third channel. One end of the first channel communicates with the central channel, and the other end of the first channel extends towards the edge of the flow guide plate. The first channel penetrates to the outside. One end of the second channel communicates with the first channel, and the other end of the second channel extends towards the edge of the flow guide plate. The second channel penetrates to the outside; one end of the third channel communicates with the second channel, and the other end of the third channel extends towards the edge of the flow guide plate. The third channel penetrates to the outside.

[0009] According to some preferred implementation aspects of the present utility model, the sub-channels are curved.

[0010] According to some preferred implementation aspects of the present utility model, the flow guide plate includes a plate body, a plurality of convex portions, and a plurality of connecting portions. The convex portions and the connecting portions are both protrudingly arranged on the plate body. The plurality of convex portions are sequentially arranged from the center of the plate body towards the edge of the plate body. The convex portions are in the shape of an annular ring with a notch. The connecting portions are used to connect two adjacent convex portions. An air flow channel is formed between the plurality of convex portions and the plurality of connecting portions.

[0011] According to some preferred implementation aspects of the present utility model, an opening groove recessed downward is formed on the convex portion at the edge of the flow guide plate. The opening groove penetrates to the outside. The other end of the sub-channel communicates with the opening groove. The cross-section of the opening groove is in the shape of a straight U.

[0012] According to some preferred implementation aspects of the present utility model, the flow guide plate is cylindrical.

[0013] According to some preferred implementation aspects of the present utility model, the flow guide plate is detachably connected to the horn main body. A clamping member is provided on one of the flow guide plate and the horn main body, and a clamping groove cooperating with the clamping member is provided on the other.

[0014] According to some preferred implementation aspects of the present utility model, a clamping member is provided on the flow guide plate, and a clamping groove cooperating with the clamping member is provided on the horn main body; and / or the clamping member is columnar.

[0015] According to some preferred implementation aspects of the present utility model, a plurality of clamping members are provided, a plurality of clamping grooves are provided, and the clamping members and the clamping grooves correspond to each other one by one.

[0016] Another technical solution adopted by the present utility model is:

[0017] A speaker, including the coaxial horn and a box body, and the coaxial horn is arranged in the box body.

[0018] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0019] The coaxial speaker provided by the present utility model, by providing an air flow channel, the sub-channels are dispersed from the center of the flow guiding plate to the surroundings, and each sub-channel can absorb the noise of a specific frequency, efficiently absorb the noise behind the unit, and effectively reduce up to 99% of the noise generated in the space behind the unit, thereby bringing a more pure and clear true sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 is an exploded view of the coaxial speaker provided by the present utility model;

[0021] Attached Figure 2 is a cross-sectional view of the coaxial speaker provided by the present utility model;

[0022] Attached Figure 3 is a cross-sectional view of the coaxial speaker provided by the present utility model (adding the air flow direction of the midrange speaker moving up and down and the air flow direction of the tweeter moving up and down);

[0023] Attached Figure 4 is a perspective view of the coaxial speaker provided by the present utility model;

[0024] Attached Figure 5 is a side view of the coaxial speaker provided by the present utility model;

[0025] Attached Figure 6 is a top view of the coaxial speaker provided by the present utility model;

[0026] Attached Figure 7 is a perspective view of the flow guiding plate of the coaxial speaker provided by the present utility model;

[0027] Attached Figure 8 is a top view of the flow guiding plate of the coaxial speaker provided by the present utility model;

[0028] Attached Figure 9 is a side view of the flow guiding plate of the coaxial speaker provided by the present utility model;

[0029] Attached Figure 10 is a cross-sectional view of the speaker box provided by the present utility model;

[0030] Attached Figure 11 is a cross-sectional view of the existing speaker box;

[0031] Attached Figure 12 is the attached Figure 11 magnified view of the coaxial speaker in;

[0032] Attached Figure 13 is a cross-sectional view of the existing coaxial speaker.

[0033] In the above drawings:

[0034] 1 - Cabinet, 101 - Cabinet chamber; 2 - Clamping part;

[0035] 3 - Flow guide plate, 31 - Plate body, 32 - Connection part, 33 - First convex part, 34 - Second convex part, 341 - Groove, 342 - Opening groove, 35 - Third convex part, 36 - Fourth convex part, 37 - Fifth convex part;

[0036] 5 - Mid - range speaker, 51 - Vent hole of mid - range speaker; 6 - High - range speaker, 61 - Vent hole of high - range speaker; 7 - Central channel; 8 - First channel; 9 - Second channel; 10 - Third channel; 11 - Accommodating channel. Detailed implementation mode

[0037] Next, the technical solution of the present utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present utility model.

[0038] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0040] Refer to Figures 1 to 10 the coaxial speaker shown. The coaxial speaker includes a speaker main body and a flow guide plate 3, where:

[0041] The horn body includes a midrange horn 5 and a tweeter 6. The tweeter 6 and the midrange horn 5 are coaxially arranged. The tweeter 6 has a vent hole 61, and the midrange horn 5 has a vent hole 51.

[0042] The baffle 3 is arranged at the bottom of the horn body. The baffle 3 is cylindrical. An air flow channel is arranged on the side of the baffle 3 facing the horn body. The air flow channel is in communication with the vent hole of the midrange horn 5 and the vent hole of the tweeter 6. Figure 3 In the figure, the thin arrow indicates the air flow direction of the up and down movement of the midrange horn 5, and the thicker arrow indicates the air flow direction of the up and down movement of the tweeter 6; the air flow channel includes a central channel 7 and a plurality of sub-channels. The central channel 7 is located at the middle position of the baffle 3. One end of the sub-channel is in communication with the central channel 7, and the other end of the sub-channel extends towards the edge of the baffle 3. The other end of the sub-channel is in communication with the outside, that is, the sub-channels are dispersed from the center of the baffle 3 to the surroundings. The other ends of the plurality of sub-channels are distributed along the circumferential direction of the baffle 3.

[0043] The central channel 7 and the plurality of sub-channels are in a maze shape. Each channel can absorb noise of a specific frequency. When these channels are combined together, an acoustic black hole is formed to efficiently absorb the noise behind the unit, effectively reducing up to 99% of the noise generated in the space behind the unit, thus bringing a more pure and clear true sound quality.

[0044] See Figures 7 - 8 , there are two sub-channels. One sub-channel ( Figure 8 indicated by a in the figure) has one end in communication with the central channel 7, and the other end of the sub-channel extends towards the edge of the baffle 3. The other end of the sub-channel is in communication with the outside.

[0045] The other sub-channel includes a first channel 8, a second channel 9 and a third channel 10. One end of the first channel 8 is in communication with the central channel 7, and the other end of the first channel 8 extends towards the edge of the baffle 3. The other end of the first channel 8 is in communication with the outside (the other end of the first channel 8 penetrates the edge of the baffle 3 and forms an air outlet at the edge of the baffle 3). One end of the second channel 9 is in communication with the first channel 8, and the other end of the second channel 9 extends towards the edge of the baffle 3. The other end of the second channel 9 is in communication with the outside (the other end of the second channel 9 penetrates the edge of the baffle 3 and forms an air outlet at the edge of the baffle 3); one end of the third channel 10 is in communication with the second channel 9, and the other end of the third channel 10 extends towards the edge of the baffle 3. The other end of the third channel 10 is in communication with the outside (the other end of the third channel 10 penetrates the edge of the baffle 3 and forms an air outlet at the edge of the baffle 3).

[0046] See Figures 7 - 9, the flow deflector 3 includes a plate body 31, a plurality of convex portions, and a plurality of connecting portions 32. The convex portions and the connecting portions 32 both protrude from the plate body 31, and both the convex portions and the connecting portions 32 face the horn body. The plurality of convex portions are sequentially arranged from the center of the plate body 31 towards the edge of the plate body 31. The connecting portions 32 are used to connect adjacent two convex portions. An air flow channel is formed between the plurality of arc-shaped convex portions and the plurality of connecting portions 32. The connecting portion 32 is strip-shaped, and the convex portion has a notched ring shape, that is, a broken circle (the plurality of convex portions are concentrically arranged), that is, the convex portion includes a plurality of independent sub-convex portions, and a gap is maintained between adjacent two sub-convex portions. Among them, a gap is maintained between some adjacent two convex portions, and this gap can be staggeredly arranged to form an air flow channel for gas circulation.

[0047] One implementation manner in which the other end of the sub-channel communicates with the outside is: the end of the other end of the sub-channel is located on the side surface of the flow deflector 3 facing the horn body. An opening groove 342 that recesses downward is formed on the convex portion located at the edge of the flow deflector 3. The bottom wall of the opening groove 342 is the upper surface of the plate body 31. The end of the other end of the sub-channel communicates with the opening groove 342, and the opening groove 342 communicates with the outside. The cross-section of the opening groove 342 is straight U-shaped. Another implementation manner in which the other end of the sub-channel communicates with the outside is: a ventilation hole is formed on the convex portion located at the edge of the flow deflector 3. The ventilation hole communicates with the outside. The other end of the sub-channel extends towards the edge of the flow deflector 3, and the end of the other end of the sub-channel communicates with the ventilation hole.

[0048] In some implementation manners, the air flow channel further includes one or more accommodation channels 11. The accommodation channels 11 are not communicated with the middle channel and the sub-channel, and the accommodation channels are used to retain some gas.

[0049] Such as referring to Figure 7 , the convex portion includes a first convex portion 33 and a second convex portion 34. The first convex portion 33 is located at the edge of the flow deflector 3 (that is, the outermost side). The second convex portion 34 is adjacent to the first convex portion 33. The second convex portion 34 is closer to the center of the flow deflector 3 than the first convex portion 33. A gap is maintained between the second convex portion 34 and the first convex portion 33. Two connecting portions 32 are arranged between the first convex portion 33 and the second convex portion 34. The connecting portions 32 are connected to both the first convex portion 33 and the second convex portion 34. A gap is maintained between the two connecting portions 32. A groove 341 that recesses downward is formed on the second convex portion 34 located between the two connecting portions 32. The groove 341 communicates with the outside, but the groove 341 is not communicated with the sub-channel, and is used to retain some gas. Or two connecting portions 32 are arranged between two adjacent convex portions close to the middle of the flow deflector 3, and an accommodation channel is formed between the two convex portions and the two connecting portions 32.

[0050] In some embodiments, the convex portion includes a third convex portion 35, a fourth convex portion 36, and a fifth convex portion 37. The third convex portion 35 is in the shape of an unclosed ring. The fourth convex portion 36 and the fifth convex portion 37 are oppositely arranged. The opposite ends of the fourth convex portion 36 are respectively opposite to and keep a gap from the opposite ends of the fifth convex portion 37. Both the fourth convex portion 36 and the fifth convex portion 37 protrude away from each other. The third convex portion 35 is located between the fourth convex portion 36 and the fifth convex portion 37. The fourth convex portion 36 and the fifth convex portion 37 are connected to form a circle. The third convex portion 35 is a circle with a notch. The two circles are concentric. A connecting portion 32 is provided between the third convex portion 35 and the fourth convex portion 36. The opening of the third convex portion 35 faces the fifth convex portion 37. A central channel 7 is formed among the third convex portion 35, the fourth convex portion 36, and the fifth convex portion 37.

[0051] In some embodiments, the flow guide plate 3 is detachably connected to the horn body. For example, a clamping member 2 is provided on one of the flow guide plate 3 and the horn body, and a clamping groove matching with the clamping member 2 is formed on the other. Inserting the clamping member 2 into the clamping groove facilitates the splicing of the flow guide plate 3 and the horn body, and also facilitates the disassembly of the flow guide plate 3 from the horn body.

[0052] In this example, a clamping member 2 is provided on the convex portion of the flow guide plate 3, and a clamping groove matching with the clamping member 2 is provided on the horn body. The clamping member 2 is columnar. A plurality of clamping members 2 are provided, and a plurality of clamping grooves are provided. The clamping members 2 and the clamping grooves are in one-to-one correspondence.

[0053] In another embodiment provided by the present utility model, it includes a box body 1 and a coaxial horn. The horn body and the flow guide plate 3 are both arranged in the box body 1. Among them, the box body 1 is divided into a plurality of chambers 101. The coaxial horn is located in one chamber 101. The air turbulent eddy in the chamber 101 ( Figure 10 as indicated by the arrow in the chamber 101) is reduced by 90% of the sound radiation to the front through the maze-type partition flow guide plate. For the direction indication of the front sound radiation, refer to Figure 10 the arrow on the left in it.

[0054] The above embodiments are only used to illustrate the technical concept and characteristics of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A coaxial speaker, characterized in that: The speaker body comprises a speaker body and a guide plate, wherein the speaker body comprises a mid-range speaker and a tweeter, and the tweeter is coaxially arranged with the mid-range speaker; the guide plate is arranged at the bottom of the speaker body, and an air flow channel is arranged on the side of the guide plate facing the speaker body, and the air flow channel is connected with the air holes of the mid-range speaker and the air holes of the tweeter, and the air flow channel comprises a central channel and a plurality of branch channels, wherein the central channel is located in the middle of the guide plate, one end of the branch channel is connected with the central channel, and the other end of the branch channel extends to the edge of the guide plate, and the branch channel is connected with the outside.

2. The coaxial speaker according to claim 1, characterized in that: The air flow channel is in a maze shape.

3. The coaxial speaker according to claim 1, characterized in that: The branch channel includes a first channel, a second channel and a third channel. One end of the first channel is connected to the central channel, the other end of the first channel extends to the edge of the guide plate, and the first channel is connected to the outside; one end of the second channel is connected to the first channel, the other end of the second channel extends to the edge of the guide plate, and the second channel is connected to the outside; one end of the third channel is connected to the second channel, the other end of the third channel extends to the edge of the guide plate, and the third channel is connected to the outside.

4. The coaxial speaker according to claim 1, characterized in that: The branch channels are in the form of curves.

5. The coaxial speaker according to claim 1, characterized in that: The guide plate includes a plate body, multiple protrusions and multiple connecting parts. The protrusions and the connecting parts are both protrudingly arranged on the plate body. The multiple protrusions are arranged in sequence from the center of the plate body to the edge of the plate body. The protrusions are in a ring shape with a notch. The connecting part is used to connect two adjacent protrusions. The airflow channel is formed between the multiple protrusions and the multiple connecting parts.

6. The coaxial speaker according to claim 5, characterized in that: An opening groove recessed downward is provided on the convex portion of the guide plate edge. The opening groove is connected to the outside, and the other end of the branch channel is connected to the opening groove. The cross section of the opening groove is straight U-shaped.

7. The coaxial speaker according to claim 1, characterized in that: The guide plate is cylindrical.

8. The coaxial speaker according to claim 1, characterized in that: The guide plate is detachably connected to the speaker body. One of the guide plate and the speaker body is provided with a clamping piece, and the other is provided with a clamping slot matched with the clamping piece.

9. The coaxial speaker according to claim 8, characterized in that: The guide plate is provided with a clamping piece, and the speaker body is provided with a clamping groove matched with the clamping piece; and\or the clamping piece is columnar.

10. A sound box, characterized in that: It comprises the coaxial speaker and the box body as described in any one of claims 1 to 9, wherein the coaxial speaker is arranged in the box body.

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