Loudspeaker assembly and sound box

Abstract

The invention relates to a loudspeaker assembly and a sound box, the loudspeaker assembly comprises at least two layers of loudspeaker groups, and each layer of loudspeaker group comprises at least two loudspeaker units; the sound production directions of the loudspeaker units on each layer are oppositely arranged; all the loudspeaker units jointly enclose a sound outlet space with a sound outlet, an axis point is formed in the sound outlet space, and the distances between the sound production centers of all the loudspeaker units and the axis point are equal. During specific implementation, a plurality of small-size loudspeaker units can be arranged in such a way, so that a sound pressure level which is large enough can be generated, and as the small-size loudspeaker units are small in vibrating diaphragm area and relatively high in vibration rate, the problem of distortion is avoided, and the sound quality effects of large sound pressure level and good quality are obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of sound boxes, and in particular to a speaker assembly and a sound box. Background Art

[0002] In the related art, the speaker units of professional speakers usually adopt larger-sized speaker units, such as 15-inch, 18-inch, 21-inch, etc. These larger-sized speakers have larger diaphragm areas and can push more air, so they can produce larger sound pressure levels. However, due to the large diaphragm area and heavy weight, the vibration rate is slower, resulting in corresponding distortion, which affects the experience. Summary of the invention

[0003] The present invention aims at solving the above-mentioned defects in the prior art and provides an improved loudspeaker assembly and sound box.

[0004] The technical solution adopted by the present invention to solve the technical problem is: construct a speaker assembly, including at least two layers of speaker groups, each layer of the speaker group includes at least two speaker units; the sound emission directions of the speaker units in each layer are relatively arranged;

[0005] All the speaker units together form a sound outlet space with a sound outlet, and form an axis point in the sound outlet space. The distance between the sound emission center of each speaker unit and the axis point is equal.

[0006] In some embodiments, the axis point is located on a first axis extending along a first direction;

[0007] The at least two layers of speaker groups are arranged along the axial direction of the first axis, and the speaker units of each layer are arranged along the circumferential direction of the first axis to enclose the sound output space.

[0008] In some embodiments, the distance between the sound emission centers of two adjacent speaker units in each layer is the same first distance.

[0009] In some embodiments, the sound axes of two adjacent speaker units in each layer form the same first angle;

[0010] The first angle is a 90° angle, an acute angle, or an obtuse angle.

[0011] In some embodiments, each layer of the speaker group includes two speaker units, and the first angle is 90°; or,

[0012] Each layer of the speaker group includes three speaker units, and the first angle is 90°; the three speaker units of each layer of the speaker group are arranged in a U shape.

[0013] In some embodiments, the at least two layers of speaker groups are arranged in parallel in the second direction, and the number of the speaker units in each layer of the speaker groups is the same;

[0014] The second direction is perpendicular to the first direction.

[0015] In some embodiments, the speaker units of each layer correspond one to one in the first direction;

[0016] The distance between the sound emission centers of two corresponding and adjacent speaker units in the first direction is the same second distance.

[0017] In some embodiments, the center positions between the speaker units of each layer of the speaker group form a center point, and the center points of each layer are connected to form the first axis;

[0018] The axis point includes one and is located at the center position of the first axis in the first direction.

[0019] In some embodiments, all of the speaker units are bass units; or, all of the speaker units are mid-range units; or, all of the speaker units are tweeters;

[0020] And the models of all the speaker units are the same.

[0021] The present invention also constructs a sound box, which comprises a box body and any one of the above-mentioned speaker assemblies, wherein the speaker assembly is installed in the box body;

[0022] The box body is provided with an opening portion, and the opening portion is opposite to the sound outlet.

[0023] The speaker assembly and the sound box implementing the present invention have the following beneficial effects:

[0024] By arranging the speaker units in a certain manner so that the distance from the sound center of each speaker unit to an axis point is equal, when the speaker units sound at the same time, the sound waves can reach the axis point at the same time, and the phases of the sound waves are equal, then the sound waves are only superimposed and not canceled, thereby generating a larger sound pressure level; in a specific implementation, a plurality of small-sized speaker units can be arranged in this way to generate a sufficiently large sound pressure level, and because the diaphragm area of ​​the small-sized speaker unit is small and the vibration rate is fast, the distortion problem is avoided, thereby obtaining a large sound pressure level and a good quality sound effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0026] Figure 1 is a schematic diagram of a three-dimensional structure of a speaker assembly in some embodiments of the present invention;

[0027] Figure 2 yes Figure 1 A schematic front view of the structure of the loudspeaker assembly shown;

[0028] Figure 3 yes Figure 1 A schematic diagram of the top view of the loudspeaker assembly shown;

[0029] Figure 4 yes Figure 1 Another schematic diagram of the top view of the speaker assembly shown;

[0030] Figure 5 is a schematic structural diagram of a speaker unit in some embodiments of the present invention;

[0031] Figure 6 is a schematic diagram of the structure of a speaker in some embodiments of the present invention;

[0032] Figure 7 yes Figure 6 A schematic diagram of the exploded structure of the speaker shown;

[0033] Figure 8 yes Figure 6 Another exploded structural schematic diagram of the speaker shown.

[0034] In the accompanying drawings, 10. speaker assembly, 1. speaker group, 11. speaker unit, 111. diaphragm, 112. dust cap, 113. opening, 114. magnet, 115. bracket, 2. sound outlet, 3. sound outlet space, 20. speaker box, 201. box body, 202. opening, 203. mounting wall, 204. mounting hole, 205. top, 206. bottom, first axis a, sound axis s, sound center c, axis point O, first direction y, second direction x, distance d, first distance d1, second distance d2, first angle θ. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in specific orientations. They are only for the convenience of describing the present technical solution, and do not indicate that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0038] Figures 6 to 8 The speaker 20 in some embodiments of the present invention is shown, combined with Figures 6 to 8 As shown, the sound box 20 includes a box body 201 and a speaker assembly 10, and the speaker assembly 10 is installed in the box body 201; the box body 201 is provided with an opening portion 202, and the opening portion 202 is opposite to the sound outlet 2 of the speaker assembly 10, so that the superimposed sound waves can be projected outward through the sound outlet 2 and the opening portion 202.

[0039] like Figures 1 to 4 As shown, the speaker assembly 10 includes at least two layers of speaker groups 1, and each layer of speaker group 1 includes at least two speaker units 11; the sound directions of the speaker units 11 of each layer are relatively arranged; all the speaker units 11 together form a sound outlet space 3 with a sound outlet 2, and form an axis point O in the sound outlet space 3, and the distance d between the sound center c of each speaker unit 11 and the axis point O is equal.

[0040] Understandably, if Figure 5As shown, the speaker unit 11 includes a magnet 114, a voice coil, a diaphragm 111, a bracket 115, a dust cap 112 and other structures. When the audio current passes through the voice coil, a changing magnetic field is generated in the voice coil. This magnetic field interacts with the magnetic field of the magnet 114 to make the voice coil reciprocate. The movement of the voice coil drives the diaphragm 111 to vibrate. The vibration of the diaphragm 111 pushes the surrounding air molecules, thereby converting the electrical signal into sound waves. The sound waves propagate through the air and eventually reach our ears and are recognized by us as sound.

[0041] The sound direction of the speaker unit 11 refers to the propagation direction of the sound waves emitted by the speaker unit 11 , and the diaphragm 111 is the main part that generates the sound waves. Therefore, it can be understood as the direction of the diaphragm 111 of the speaker unit 11 , and can also be understood as the direction of the opening 113 of the speaker unit 11 .

[0042] It can be understood that when the speaker unit 11 makes a sound, the entire diaphragm 111 will vibrate to generate sound waves, and the center of the diaphragm 111 is the main area of ​​sound radiation. Therefore, for ease of description and understanding, in the present invention, the sound center c of the speaker unit 11 is used to represent the sound of the entire diaphragm 111 for analysis. The sound center c of the speaker unit 11, that is, the center of the speaker unit 11, is also called the acoustic center, which is located at the center of the diaphragm 111, and the dust cap 112 is located at the center of the diaphragm 111, so the sound center c is also located at the center of the dust cap 112.

[0043] Combination Figure 1 and Figure 3 As shown, the sound emitting directions of the speaker units 11 of each layer are relatively arranged, so that all the speaker units 11 can jointly enclose a sound outlet space 3 having a sound outlet 2, and can form an axis point O in the sound outlet space 3. It can be understood that the openings 113 of the speaker units 11 of each layer are relatively arranged, so that each speaker unit 11 can emit sound in the same direction, so that sound waves can intersect there, thereby forming a virtual sound emitting point, and the virtual sound emitting point is the axis point O.

[0044] Since the distance d between the sound center c of each speaker unit 11 and the axis point O is equal, when each speaker unit 11 makes sound at the same time, the sound waves can reach the axis point O at the same time, and the phases of the sound waves are equal, then the sound waves are only superimposed and not canceled, thereby generating a larger sound pressure level, and the superimposed sound waves propagate outward through the sound outlet 2.

[0045] Combination Figure 1 and Figure 2As shown, in some embodiments, the axis point O may be located on a first axis a extending along a first direction y; the at least two layers of speaker groups 1 are arranged along the axial direction of the first axis a, and the speaker units 11 of each layer are arranged along the circumferential direction of the first axis a to enclose a sound output space 3. For example, the first direction y may be Figure 2 Portrait orientation shown.

[0046] Combination Figure 1 and Figure 3 As shown, the distance between the sound centers c of two adjacent speaker units 11 in each layer is the same first distance d1. It can be understood that the distance between the sound centers c of two speaker units 11 is the distance between the two speaker units 11.

[0047] The distance between the sound centers c of two adjacent speaker units 11 in each layer is equal. This includes that in the same layer, the distance between the sound centers c of two adjacent speaker units 11 is equal, and at the same time, in each layer, the distance between the sound centers c of two adjacent speaker units 11 in each layer is equal.

[0048] For example, when each layer of speaker group 1 includes two speaker units 11, the distance between the sound centers c of the two adjacent speaker units 11 in one layer is the first distance d1, then in each layer, the distance between the sound centers c of the two adjacent speaker units 11 is the first distance d1.

[0049] When each layer of speaker group 1 includes three or more speaker units 11, in addition to the above relationship, it also includes that the distance between the sound centers c of any two adjacent speaker units 11 in a layer is the first distance d1. Therefore, in a speaker assembly 10, in any layer, the distance between the sound centers c of any two adjacent speaker units 11 is the same value, which is conducive to the formation of the axis point O.

[0050] Generally speaking, the width of the sound outlet 2 should be greater than the width between the outer edges of two adjacent speaker units 11 to facilitate the outward propagation of sound waves.

[0051] It can be understood that the first distance d1 in different speaker assemblies 10 can be set to different values ​​and can be set according to actual needs.

[0052] In some embodiments, two adjacent speaker units 11 in the same layer are arranged closely, that is, the distance between the outer edges of the two adjacent speaker units 11 is 0 or close to 0. It can be understood that an appropriate distance is allowed between the outer edges of the two adjacent speaker units 11, for example, an appropriate gap is left to facilitate the installation and debugging of the speaker units 11.

[0053] like Figure 4 As shown, in some embodiments, the sound axes s of two adjacent speaker units 11 in each layer form the same first angle θ. Figure 5 As shown, it can be understood that the sound axis s of the speaker unit 11 refers to the main direction of sound wave radiation when the speaker unit 11 makes a sound, which is the central axis of the speaker unit 11, and the sound center c is located on the sound axis s.

[0054] The sound directions of the speaker units 11 of each layer are relatively arranged, that is, the sound directions of two adjacent speaker units 11 of each layer are relatively arranged, so that an angle is formed between the two adjacent speaker units 11 of each layer.

[0055] In the present invention, the angle between the sound axes s of two adjacent speaker units 11 in each layer is used to illustrate the relationship between the angles between two adjacent speaker units 11 in each layer.

[0056] The same first angle θ is formed between the sound axes s of two adjacent speaker units 11 in each layer, which is similar to the meaning that the distance between the sound centers c of the above-mentioned two speaker units 11 is the same first distance d1, that is, the angles between the sound axes s of two adjacent speaker units 11 in each layer are equal.

[0057] Therefore, in a loudspeaker assembly 10, in any layer, the angle between the sound axes s of any two adjacent loudspeaker units 11 is the same value, so as to facilitate the formation of the axis point O.

[0058] The analysis method is the same as the above-mentioned method for the distance between the sound centers c of two adjacent speaker units 11 in each layer is the same as the first distance d1, except that the "distance between the sound centers c" is changed to "the angle between the sound axes s", and the "distance is the first distance d1" is changed to "the angle is the first angle θ", which is also valid, so it is not repeated here. That is, in a speaker assembly 10, in any layer, the angle between the sound axes s of any two adjacent speaker units 11 is the same value.

[0059] The first angle θ may be a 90° angle, or an acute angle, or an obtuse angle. Preferably, the first angle θ is a 90° angle. In some embodiments, each layer of speaker groups includes two speaker units, and the first angle is a 90° angle. In other embodiments, each layer of speaker groups includes three speaker units, and the first angle is a 90° angle; the three speaker units of each layer of speaker groups are arranged in a U shape. It can be understood that when the first angle is a 90° angle, it is conducive to acoustic coupling, has a good sound gathering effect, is conducive to outward projection, and is easy to assemble and layout.

[0060] Among them, the range of the acute angle can be greater than 65° and less than 90°, and the range of the obtuse angle can be greater than 90° and less than 125°. It can be understood that if the angle of the acute angle is too small, it will block the sound waves from propagating outward to a certain extent, and it is easy to cause distortion. If the angle of the obtuse angle is too large, it is not conducive to the gathering of sound, and the larger the angle, the larger the distance between the two speaker units 11, and the larger the distance, the stronger the interference between the speaker units 11.

[0061] It can be understood that in some embodiments, each layer of speaker group 1 may include two or more unit groups, each unit group includes two or more speaker units 11, and the speaker units 11 of the same unit group are all located on the same plane, and the sound axes s of two adjacent unit groups form the same first angle θ.

[0062] For example, each layer of speaker groups 1 may include two unit groups, each unit group includes two speaker units 11, and the openings 113 of the two speaker units 11 of the same unit group are located on the same plane, the sound axes s of the two unit groups form an angle of 90°, and the two unit groups are symmetrically arranged. That is, under the premise of being able to form the axis point O as mentioned above, the speaker units 11 can be arranged and laid out in various ways.

[0063] Combination Figure 1 and Figure 2 As shown, the at least two layers of speaker groups 1 are arranged in parallel in the second direction x, and the number of speaker units 11 in each layer of speaker groups 1 is the same; it can be understood that the sound centers c of the speaker units 11 of each layer can all be located on the same straight line, and the straight line is parallel to the second direction x; the straight lines where the sound centers c of the speaker units 11 of each layer are located are parallel to each other. Therefore, one layer of speaker units 11 can be called a row of speaker units 11. It can be understood that the speaker group 1 can be provided with two or more layers, such as two, three, four or more layers.

[0064] The second direction x is perpendicular to the first direction y. For example, the second direction x may be Figure 2 In other embodiments, the second direction x can be arranged at other angles with the first direction y, as long as the purpose of the present invention can be achieved.

[0065] In some embodiments, the speaker units 11 of each layer correspond one to one in the first direction y. It can be understood that the sound centers c of the corresponding speaker units 11 on different layers in the first direction y can all be located on the same straight line, and the straight line is parallel to the first direction y, thereby forming two or more rows of speaker units 11.

[0066] The distance between the sound centers c of two adjacent speaker units 11 corresponding to each other in the first direction y is the same second distance d2. This is similar to the meaning of the first distance d1 that the distance between the sound centers c of two adjacent speaker units 11 in each layer is the same, that is, the distance between the sound centers c of two corresponding speaker units 11 in the first direction y in two adjacent layers of speaker units 11 is equal. In other words, in a speaker assembly 10, in any two adjacent layers, the distance between the sound centers c of any two corresponding speaker units 11 in the first direction y is the same value.

[0067] It can be understood that the second distance d2 in different speaker assemblies 10 can be set to different values ​​and can be set according to actual needs.

[0068] In some embodiments, two corresponding speaker units 11 in two adjacent layers in the first direction y are arranged closely, that is, the distance between the outer edges of the two speaker units 11 is 0 or close to 0. At this time, the distance between the sound emission centers c of the two speaker units 11 is equal to or close to the diameter of one speaker unit 11. It can be understood that an appropriate distance is allowed between the outer edges of the two speaker units 11, such as leaving an appropriate gap, to facilitate the installation and debugging of the speaker units 11.

[0069] It can be understood that the axis point O is a virtual point and is the position where the sound waves emitted by all the speaker units 11 in the speaker assembly 10 must pass during the propagation process. The axis point O is the center position of all the speaker units 11 in the speaker assembly 10. Figure 2 As shown, exemplarily, it can be determined in this way, that is, a center point is formed at the center position between the speaker units 11 of each layer of the speaker group 1, and the center point line of each layer forms a first axis a; the axis point O includes one, and is located at the center position of the first axis a in the first direction y.

[0070] Therefore, the axis point O is located at the center of all layers in the first direction y, and at the center of the speaker unit 11 of each layer in the second direction x, so that the distance d between the sound center c of each speaker unit 11 and the axis point O is equal.

[0071] It can be understood that by arranging the speaker units 11 in the above manner, the distance d between the sound center c of each speaker unit 11 and the axis point O is equal. Of course, in other embodiments, other arrangements can also be used as long as the purpose can be achieved.

[0072] In a speaker assembly 10 , all speaker units 11 are woofers; or, all speaker units 11 are mid-range units; or, all speaker units 11 are tweeters; and all speaker units 11 are of the same model.

[0073] It can be understood that when all the speaker units 11 in the speaker assembly 10 are bass units, the speaker assembly 10 is a subwoofer speaker assembly, and the sound box 20 equipped with the subwoofer speaker assembly is a subwoofer sound box. When all the speaker units 11 in the speaker assembly 10 are mid-range units, the speaker assembly 10 is a mid-range speaker assembly, and the sound box 20 equipped with the mid-range speaker assembly is a mid-range sound box. When all the speaker units 11 in the speaker assembly 10 are tweeters, the speaker assembly 10 is a tweeter speaker assembly, and the sound box 20 equipped with the tweeter speaker assembly is a tweeter sound box.

[0074] In a speaker assembly 10, all speaker units 11 must be of the same model. It is understandable that all speaker units 11 have the same model to ensure that their sizes and parameters are the same, including phase, group delay, frequency response range, amplitude, etc., so that the phases of the speaker units 11 are the same, thereby achieving better coupling.

[0075] The speaker assembly 10 of the present invention arranges the speaker units 11 in a certain manner so that the distance d from the sound center c of each speaker unit 11 to the same axis point O is equal. Therefore, when the speaker units 11 make sounds at the same time, the sound waves can reach the axis point O at the same time, and the phases of the sound waves are equal, so the sound waves are only superimposed and not canceled, thereby generating a larger sound pressure level.

[0076] In a specific implementation, a plurality of small-sized speaker units 11 can be arranged in this way to generate a sufficiently large sound pressure level, and since the diaphragm 111 of the small-sized speaker unit 11 has a small area and a fast vibration rate, the problem of distortion is avoided, thereby obtaining a large sound pressure level and a good quality sound effect. It can be understood that the large-sized speaker unit 11 is relative to the small-sized speaker unit 11.

[0077] Combination Figures 6 to 8 As shown, in one embodiment, the box body 201 can be set in a rectangular shape, and a sound-mounting structure with an opening 202 and recessed in the box body 201 is provided on one surface of the box body 201. The sound-mounting structure includes at least two installation walls 203, and adjacent installation walls 203 are set at an angle and together form a sound-mounting structure with an opening 202.

[0078] The height of the mounting wall 203 is related to the number of layers of the speaker group 1 and the interval between adjacent layers, i.e., the second distance d2. The number of mounting walls 203 is related to the number of speaker units 11 in each layer. It can be understood that one mounting wall 203 can only be installed with one speaker unit 11 in the direction of the layer, so as to facilitate the setting of the angle between two adjacent speaker units 11, wherein the angle between adjacent mounting walls 203 is related to and matched with the first angle θ formed between the sound axes s of two adjacent speaker units 11 in each layer of the speaker group 1.

[0079] Each mounting wall 203 is correspondingly provided with a mounting hole 204 . The mounting holes 204 are spaced apart along the length direction of the mounting wall 203 and correspond to the number of layers of the speaker units 11 . Each speaker unit 11 is correspondingly mounted in each mounting hole 204 .

[0080] It is understandable that in some embodiments, one mounting wall 203 can mount all speaker units 11 of one unit group, so as to facilitate the angle setting between adjacent unit groups. The mounting holes 204 on the mounting wall 203 are arranged at intervals along the length direction and width direction of the mounting wall 203.

[0081] like Figures 6 to 8 As shown, in some specific embodiments, for example, the speaker assembly 10 includes two layers of speaker groups 1, each layer of the speaker group 1 includes three speaker units 11, and the first angle θ formed between the sound axes s of two adjacent speaker units 11 in each layer is 90°. The three speaker units 11 of each layer of the speaker group 1 are arranged in a U shape, and the two layers of speaker units 11 correspond one to one in the first direction y.

[0082] Correspondingly, the acoustic installation structure in the box 201 may include three installation walls 203, with two adjacent installation walls 203 arranged at an angle of 90°, and the three installation walls 203 together form a U-shape and an opening 202, and each installation wall 203 is provided with two installation holes 204 spaced apart in the first direction y.

[0083] It can be understood that, for the production process, when the angle between two adjacent mounting walls 203 is 90°, the production is most convenient. For sound, when the angle between two adjacent mounting walls 203 is 90°, the sound waves can be better gathered and the sound waves can be projected outward, resulting in a good effect.

[0084] Of course, the angle between two adjacent mounting walls 203 can also be set at an obtuse angle or an acute angle. It can be understood that when the angle between the sound centers c of two adjacent speaker units 11 is an acute angle, the angle between the two adjacent mounting walls 203 is set at an obtuse angle, and is a complementary angle to the acute angle. When the angle between the sound centers c of two adjacent speaker units 11 is an obtuse angle, the angle between the two adjacent mounting walls 203 is set at an acute angle, and is a complementary angle to the obtuse angle.

[0085] The top wall and the bottom wall of the box body 201 form the top 205 and the bottom 206 of the sound-mounted structure at the parts corresponding to the sound-mounted structure, and play the role of gathering sound waves together with the installation wall 203.

[0086] In some specific embodiments, the six speaker units 11 may all be 10-inch woofer units of the same model, and the speaker box 20 is a subwoofer. The axis point O is located at the center of the two layers of woofer units 11 in the first direction y, and is located at the center of the three woofer units in each layer in the second direction x. The distance d between the sound center c of each woofer unit and the axis point O is equal.

[0087] When the six woofer units sound at the same time, since the distance d between the sound center c of each woofer unit and the axis point O is equal, the time for the sound wave to reach the axis point O is equal, that is, the phase of the sound wave emitted by each woofer unit is equal. When the phase is equal, the sound waves are only superimposed but not cancelled. Therefore, after the sound waves are superimposed at the axis point O, they can be projected outward through the sound outlet 2 and the opening 202. For the entire sound box 20, the axis point O is the sound source point of the sound box 20.

[0088] Two adjacent speaker units 11 in each layer may be arranged closely together, and two corresponding and adjacent speaker units 11 in the first direction y may also be arranged closely together.

[0089] It is understandable that in the related art, some conventional professional subwoofers use two 18-inch woofer speaker units, which can produce a large sound pressure level, but their vibration rate is slow, which is prone to distortion problems.

[0090] In this embodiment, two layers of 10-inch woofer units can be used, with three woofer units in each layer, to achieve a similar sound pressure level effect. Specifically, the sound pressure level generated by the speaker unit is related to the effective area of ​​its diaphragm 111. The diaphragm 111 is circular. The area calculation formula of the speaker unit 11 can be referred to as: Sd = π*r 2, Sd represents the area of ​​the speaker unit 11 ; π is a mathematical constant, which is approximately equal to 3.14159, representing the ratio of a circle to a circle; and r represents the radius of the speaker unit 11 .

[0091] The area of ​​an 18-inch speaker unit 11 is Sd = 3.14159 × (0.2286) 2 ≈0.164 square meters. The area of ​​a 10-inch speaker unit 11 is Sd = 3.14159 × (0.127) 2 ≈0.0507 square meters, so the total area of ​​three 10-inch speaker units 11 is close to the area of ​​one 18-inch speaker unit 11, so three 10-inch speaker units 11 can be used to achieve a sound pressure level similar to that of an 18-inch speaker unit 11. Therefore, by using two layers of 10-inch speaker units 11, the sound pressure level effect of two 18-inch speaker units 11 can be achieved, thus solving the problem of sound pressure level.

[0092] Moreover, the area of ​​the diaphragm 111 of a single 10-inch speaker unit 11 is smaller than that of an 18-inch speaker unit 11. Therefore, the vibration rate of the 10-inch speaker unit 11 is faster and the response is faster, making the bass cleaner, thus solving the problem of slow rate.

[0093] It can be understood that the large-size speaker unit 11 and the small-size speaker unit 11 are relative. In specific implementation, the small-size speaker unit 11 can be arranged in the above-mentioned manner according to needs, so that a sufficiently large sound pressure level can be generated, and the obtained sound is compact, clean, and has no distortion, and the coupling effect is good, which solves the problem of distortion caused by the large-size speaker unit 11 being slowed down due to its own weight when in a high-power state.

[0094] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A speaker assembly, characterized in that: It comprises at least two layers of speaker groups (1), each layer of the speaker groups (1) comprises at least two speaker units (11); the sound emission directions of the speaker units (11) of each layer are arranged relative to each other; All the speaker units (11) together form a sound outlet space (3) having a sound outlet (2), and form an axis point (O) in the sound outlet space (3), and the distance (d) between the sound emission center (c) of each speaker unit (11) and the axis point (O) is equal.

2. The loudspeaker assembly according to claim 1, characterized in that The axis point (O) is located on a first axis (a) extending along a first direction (y); The at least two layers of speaker groups (1) are arranged axially along the first axis (a), and the speaker units (11) of each layer are arranged circumferentially along the first axis (a) to enclose the sound output space (3).

3. The loudspeaker assembly according to claim 2, characterized in that The distance between the sound emission centers (c) of two adjacent speaker units (11) in each layer is the same first distance (d1).

4. The loudspeaker assembly according to claim 2, characterized in that The sound-generating axes (s) of two adjacent loudspeaker units (11) in each layer form a same first angle (θ); The first angle (θ) is a 90° angle, an acute angle, or an obtuse angle.

5. The loudspeaker assembly according to claim 4, characterized in that Each layer of the speaker group (1) comprises two speaker units (11), and the first angle (θ) is 90°; or, Each layer of the speaker group (1) comprises three speaker units (11), and the first angle (θ) is 90°; the three speaker units (11) of each layer of the speaker group (1) are arranged in a U shape.

6. The loudspeaker assembly according to claim 2, characterized in that The at least two layers of speaker groups (1) are arranged in parallel in the second direction (x), and the number of the speaker units (11) in each layer of the speaker groups (1) is the same; The second direction (x) is perpendicular to the first direction (y).

7. The loudspeaker assembly according to claim 6, characterized in that The speaker units (11) of each layer correspond one to one in the first direction (y); The distance between the sound emission centers (c) of two corresponding and adjacent speaker units (11) in the first direction (y) is the same second distance (d2).

8. The loudspeaker assembly according to claim 2, characterized in that The central positions between the speaker units (11) of each layer of the speaker group (1) form a central point, and a line connecting the central points of each layer forms the first axis (a); The axis point (O) includes one and is located at the center position of the first axis (a) in the first direction (y).

9. The loudspeaker assembly according to claim 1, characterized in that All of the speaker units (11) are bass units; or, all of the speaker units (11) are mid-range units; or, all of the speaker units (11) are tweeters; And the models of all the speaker units (11) are the same.

10. A sound box, characterized in that: It comprises a box (201) and a loudspeaker assembly (10) according to any one of claims 1 to 9, wherein the loudspeaker assembly (10) is installed in the box (201); The box body (201) is provided with an opening (202), and the opening (202) is opposite to the sound outlet (2).

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