Sound equipment single-layer support, sound equipment frame and sound equipment

Abstract

The embodiment of the utility model provides a sound equipment single-layer support, the sound equipment single-layer support comprises at least one support plate, a plurality of support plates are laminated and bonded, and the bonding glue can change the resonant frequency of the sound equipment single-layer support and prevent resonance. A through vibrating diaphragm containing hole is formed in the support plate, at least one pair of oppositely-opened magnet installation grooves used for installing homopolar magnets are symmetrically formed in the side walls of the two sides of the vibrating diaphragm containing hole, an opposite gap is formed between the two symmetrical magnet installation grooves, and at least one pair of homopolar opposite magnets are symmetrically arranged in the magnet installation grooves in the corresponding sides. The diaphragm is arranged in the diaphragm accommodating hole to generate a magnetic field at the opposite gap, and the diaphragm is positioned at the opposite gap in the diaphragm accommodating hole. When current passes through the vibrating diaphragm, the vibrating diaphragm vibrates and sounds under the action of a magnetic field. And the widths of the vibrating diaphragm accommodating holes at different positions on the peripheral side of the magnet mounting groove are different, so that the influence of reflection of sound in the vibrating diaphragm accommodating holes on a frequency response curve is reduced, and the good sound quality of the sound emitted by the vibrating diaphragm is ensured.

Description

Technical Field

[0001] This application relates to the technical field of sound - producing devices, in particular to a single - layer bracket for speakers, a speaker stand, and a sound - producing device. Background Art

[0002] Sound - producing devices generally apply an audio current to a conductive film placed in a uniform magnetic field. When the energized conductive film passes through the magnetic field, it will be affected by the magnetic field, changing the direction and magnitude of the audio current, and the direction and magnitude of the magnetic force on the conductive film will also change, causing the conductive film to vibrate under force and emit sound.

[0003] The magnetic field is often generated by a magnet. To limit the position of the magnet and support the conductive film, a support bracket is generally provided in the speaker device. Under the long - term action of force, the bracket deforms, resulting in a change in the position of the magnet. Due to the change in the magnetic field, the sound - producing state of the sound - producing device will also change accordingly. At the same time, under the influence of the sound waves emitted by the conductive film, the support bracket will resonate and produce sound at the natural frequency of the bracket, all of which will cause the sound emitted by the speaker to be distorted. In addition, the blockage of the support bracket to the diaphragm when supporting the diaphragm will also cause loss of the high - frequency part. Summary of the Utility Model

[0004] In view of the above problems, embodiments of this application are proposed. The purpose of the embodiments of this application is to provide a combinable single - layer bracket.

[0005] To achieve this purpose, the embodiments of this application adopt the following technical solutions:

[0006] A single - layer bracket for speakers, comprising:

[0007] At least one bracket plate, a plurality of the bracket plates are stacked and bonded. A through - hole diaphragm accommodating hole is provided on the bracket plate. Along the length direction of the diaphragm accommodating hole, at least a pair of magnet mounting grooves with opposite openings for mounting like - pole magnets are symmetrically arranged on the hole walls on both sides of the diaphragm accommodating hole. There is a facing gap between two symmetrically arranged magnet mounting grooves, and at least a pair of like - pole facing magnets are accommodated in the magnet mounting grooves on the corresponding side;

[0008] The width of the diaphragm accommodating hole at different positions around the magnet mounting groove is different.

[0009] Preferably, a spacer groove can be provided between the adjacent groove walls of two adjacent magnet mounting grooves.

[0010] Preferably, the width of the diaphragm accommodating hole is different at different positions.

[0011] Preferably, along the length direction of the diaphragm accommodating hole,

[0012] The shapes of the hole walls on the two opposite sides of the diaphragm accommodating hole on the periphery of the magnet mounting groove are different; or

[0013] The shapes of the hole walls at different positions of the diaphragm accommodating hole on the periphery of the magnet mounting groove are all different.

[0014] Preferably, the shapes of the diaphragm accommodating holes on the support plates located on different layers are different.

[0015] Preferably, the thickness of the part of the single-layer sound bracket located on the periphery of the magnet mounting groove is less than the thickness of the part of the single-layer sound bracket located at the magnet mounting groove.

[0016] Preferably, on one side wall of the diaphragm accommodating hole, the sides of the plurality of magnet mounting grooves facing away from the opening communicate with each other to form an accommodating space. A magnetic conduction member is arranged in the accommodating space. At least a part of the side of the magnet mounting groove facing away from the opening is covered by the magnetic conduction member, and the magnet is attracted to the magnetic conduction member to eliminate the magnetic field on the side of the magnet away from the opening and guide the magnetic field on the side of the magnet away from the opening.

[0017] Preferably, along the width direction of the single-layer sound bracket,

[0018] the upper ends of at least one of the magnet mounting grooves communicate with and penetrate through the upper side surface of the single-layer sound bracket to form a mounting hole, and the magnetic conduction member and the magnet are both installed through the mounting hole; or

[0019] the upper side of the accommodating space penetrates through the single-layer sound bracket to form a mounting hole, and the magnetic conduction member is installed through the mounting hole;

[0020] The single-layer sound bracket further includes a cover plate, and the cover plate can be movably covered on the mounting hole to open or block the mounting hole and reduce the probability of resonance of the single-layer sound bracket.

[0021] Preferably, the single-layer sound bracket further includes:

[0022] a buffer member. A buffer member is arranged between adjacent support plates, and the buffer member can absorb vibration.

[0023] Preferably, at least one pair of opposite corners of the membrane accommodating hole on at least one of the support plates has a diaphragm suspension structure.

[0024] Another object of the embodiment of the present application is to provide a sound bracket with a low resonance probability and good sound quality.

[0025] To achieve this object, the embodiment of the present application adopts the following technical solutions:

[0026] A sound rack, comprising:

[0027] A plurality of spaced and stacked single-layer sound brackets, and spacer columns that connect two adjacent single-layer sound brackets at intervals;

[0028] The single-layer sound bracket is the above-mentioned single-layer sound bracket.

[0029] Another object of the embodiments of the present application is to provide a sound device with good sound quality and no resonance noise.

[0030] To achieve this purpose, the embodiments of the present application adopt the following technical solutions:

[0031] A sound device, comprising:

[0032] A sound rack, located at the installation position to be installed, and the sound rack is the above-mentioned sound rack;

[0033] A diaphragm, passing through the diaphragm accommodation hole, and the conductor on the diaphragm is located on the periphery of the projection of the opposing magnet of the sound rack on the diaphragm.

[0034] The technical solution provided by the embodiments of the present application is that by providing a diaphragm accommodation hole on the support plate, at least a pair of magnet installation grooves with opposite openings for installing like-pole magnets are symmetrically arranged on the side walls opposite to the diaphragm accommodation hole, and there is an opposing gap between the two symmetrically arranged magnet installation grooves. At least a pair of magnets are like-pole opposite and symmetrically accommodated in the magnet installation grooves on the corresponding side to form a magnetic field at the opposing gap. Compared with the way of magnet columns, such a structure can shorten the support that restricts the position of the magnet, avoid the slow deformation of the magnet support affected by too much magnetic field, and ensure good consistency of the opposing gap of the magnet.

[0035] The conductor on the diaphragm is located in the magnetic field at the opposing gap. When current flows through the conductor, the conductor vibrates under force, thereby driving the diaphragm to vibrate to emit sound. In the existing technology, the magnet support partially blocks the sound emission of the diaphragm, and this part of the blockage will cause the sound wave to reflect and diffract at the corresponding frequency points, making the SPL curve at the listening position unstable. By reducing the size of the blocking surface so that the frequency of the blocked sound wave is in the range that is difficult to detect by the human ear, and / or by setting the widths of the diaphragm accommodation holes at different positions on the periphery of the magnet installation groove to be different, the hole walls of the diaphragm accommodation holes present different shapes. Due to the change in the shape of the hole walls, the sound wave will diffract and reflect when hitting the hole walls, so that the superposition and cancellation of the sound waves at the listening position are dispersed at different frequency points, thereby improving the frequency response curve of the sound.

[0036] When the vibration frequency of the diaphragm is the same as the resonance frequency of the sound bracket, the magnet bracket resonates, thus affecting the sound quality of the speaker. The inventor stacks and bonds multiple bracket plates, and the bonded glue layer can change the resonance frequency of the single-layer bracket of the speaker, thereby effectively preventing the single-layer bracket from resonating due to the influence of sound and ensuring the good sound quality of the sound emitted by the diaphragm. The sound rack and the audio equipment using the above single-layer speaker bracket can ensure that the sound rack is not affected by the sound emitted by the diaphragm, avoid the resonance of the sound rack, and ensure that the audio equipment has good sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 Structural schematic diagram of a sound rack provided by an embodiment of the present application;

[0039] Figure 2 Structural schematic diagram of a single-layer speaker bracket provided by an embodiment of the present application;

[0040] Figure 3 Partial exploded view of a single-layer speaker bracket provided by an embodiment of the present application;

[0041] Figure 4 Structural schematic diagram of another single-layer speaker bracket provided by an embodiment of the present application;

[0042] Figure 5 For Figure 4 partial exploded view;

[0043] Figure 6 Structural schematic diagram of yet another single-layer speaker bracket provided by an embodiment of the present application;

[0044] Figure 7 Structural schematic diagram of the magnetic field generated by two magnets with the same poles facing each other provided by an embodiment of the present application.

[0045] In the figure: 1. Sound rack; 2. Diaphragm;

[0046] 10. Single-layer speaker bracket; 20. Spacer column; 30. Magnet; 40. Magnetic conductive member; 50. Top plate; 60. Base;

[0047] 11. Bracket plate; 12. Diaphragm accommodation hole; 13. Magnet installation groove; 14. Spacing groove; 15. Accommodation space; 16. Cover plate; 17. Diaphragm suspension structure. Detailed implementation manners

[0048] The inventor of the present application analyzed the sound generation principle of audio equipment. In the prior art, a planar diaphragm speaker relies on a pair of longitudinal single brackets to support a column of magnet arrays to form a magnet array pair. Due to the relatively large longitudinal dimension, the magnet brackets that support the magnetic field undergo slow deformation under long-term stress, the positions of the magnets change, and the distance between the magnet pairs at the constraint end and the magnet pairs at a position farther from the constraint end varies, resulting in uneven magnetic field intensity and changing the sound generation state of the speaker.

[0049] In addition, according to the nature of sound propagation, when sound propagates, it will produce phenomena such as reflection, refraction, diffraction, and diffraction when encountering an object. The size, shape, and distance of the obstacle encountered by the sound wave determine the direction and intensity of sound propagation. For example, when the wavelength of the sound wave is closer to the size of the obstacle, or the wavelength of the sound wave is smaller than the size of the obstacle, the diffraction phenomenon is more obvious. If the size of the obstacle is much larger than the wavelength, the sound wave will be reflected like encountering a hard boundary instead of obvious diffraction. At the receiving point, when the phase difference between the sound wave after diffraction and the sound wave that reaches the receiving point without diffraction is 180 degrees, a trough will be generated at this position, and a peak will be generated when the phase difference is 0. Therefore, it is possible to calculate which frequency band is more affected by single-layer brackets of different thicknesses, thereby solving the problem of sound wave superposition and cancellation.

[0050] In addition, when the frequency of the sound wave is the same as the natural frequency of the speaker frame that supports the diaphragm, the sound wave will excite the speaker frame, thereby exciting the vibration of the speaker frame and generating resonance. The resonance sound of the speaker frame will also emit sound, and the resonance sound will interfere with the sound emitted by the diaphragm, resulting in total harmonic distortion, and further affecting the quality of the sound of the speaker.

[0051] In view of this, the inventor considered starting from changing the structure of the magnet support frame, splitting the bracket structure that limits the magnet array into a structure in which single-layer brackets that limit paired magnets are arranged in an alternating and stacked manner. In this way, the distance between each pair of paired magnets can have higher consistency, improving the durability of the speaker support. Placing the conductor of the diaphragm in a stable magnetic field can ensure the stability of the emitted sound, thereby enabling the speaker body to obtain good sound quality. Therefore, the speaker frame that supports the diaphragm needs to have a diaphragm accommodation hole that allows the diaphragm to pass through and allows the diaphragm to have a certain vibration amplitude. At least a pair of magnet mounting grooves with opposite openings are spaced on the two side walls of the diaphragm accommodation hole along the length direction, and at least a pair of magnets with the same poles facing each other are arranged in the corresponding diaphragm accommodation holes to ensure the consistency of the single-layer speaker brackets that support the magnets, that is, to ensure the consistency of the opposing gaps.

[0052] The stability of the opposed gap determines the uniformity of the magnetic field where the diaphragm is located, thus ensuring the stability of the sound emitted by the diaphragm. Then, next, the inventors of the present application improve aspects such as the shape of the hole wall of the diaphragm accommodation hole of the audio single-layer bracket, the width size of the diaphragm accommodation hole, and the size of the audio bracket blocking the diaphragm according to the characteristics of the sound, so that after phenomena such as sound diffraction and reflection occur, the influence at the sound receiving point is dispersed at different frequency points to obtain a more stable sound pressure level in a wide frequency domain, thereby avoiding obvious enhancement or cancellation at a certain frequency point. In addition, by changing the natural frequency of the audio rack, the coincidence between the sound wave frequency of the sound emitted by the diaphragm and the natural frequency of the audio rack is avoided, and the resonance of the audio rack is avoided to solve the problem of total harmonic distortion.

[0053] The following further describes the present application in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. In addition, it should be noted that for the convenience of description, only parts related to the present application rather than all structures are shown in the drawings.

[0054] In the description of the present application, unless otherwise clearly specified and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; 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 or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0055] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the top", and "on the top" of the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "below the bottom", and "under the bottom" of the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0056] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, 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, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0057] Please refer to Figure 1 , an embodiment of the present application provides a sound rack 1 for supporting a diaphragm 2 and a magnet 30. The sound rack 1 includes a plurality of spaced-apart stacked single-layer sound brackets 10, and spacer columns 20 that connect two adjacent upper and lower single-layer sound brackets 10 at intervals, which can facilitate the flow of air and is conducive to the sound emitted by the diaphragm 2 to propagate to the outside.

[0058] Next, in combination with Figures 2 to 6 a detailed description of the single-layer sound bracket 10 will be given.

[0059] In the embodiment of the present application, please refer to Figures 2 to 6 , the single-layer sound bracket 10 includes at least one bracket plate 11. A through diaphragm accommodating hole 12 is provided on the bracket plate 11. Along the length direction of the diaphragm accommodating hole 12, at least a pair of magnet mounting grooves 13 with opposite openings are symmetrically arranged on the side walls on both sides of the diaphragm accommodating hole 12. There is an opposing gap between the two symmetrically arranged magnet mounting grooves 13. At least a pair of magnets 30 are opposite in the same pole and are symmetrically accommodated in the magnet mounting grooves 13 on the corresponding side, so as to ensure that the opposing spacing of each pair of magnets 30 in the height direction of the sound rack 1 is consistent. The diaphragm 2 is located at the opposing gap in the diaphragm accommodating hole 12. The conductive circuit on the diaphragm 2 is located in the magnetic field generated by the opposing magnets 30. When a current is passed through the conductive circuit, a magnetic force acting on the conductive circuit is generated, and then the diaphragm 2 is driven to vibrate and generate sound. In a specific embodiment, as Figure 6 shown, the widths of the diaphragm accommodating holes 12 at different positions on the periphery of the magnet mounting groove 13 are the same. In this case, for the frequency whose half wavelength is equal to the thickness of the single-layer sound bracket 10, it will be affected. Once the thickness of the single-layer sound bracket 10 is less than a certain value, such as 8.5 mm, the corresponding wavelength is 17 mm, and the sound wave frequency corresponding to the 17 mm wavelength is 20 kHz, which has exceeded the human hearing range (20 Hz to 20 kHz), the influence brought by reflection or diffraction can be ignored, and the final sound pressure level curve can reach a steady state within the full audio range. In another embodiment of the present application, as Figures 2 to 7 shown, the widths of the diaphragm accommodating holes 12 at different positions on the periphery of the magnet mounting groove 13 are different, that is, the hole walls on both sides of the diaphragm accommodating hole 12 are not parallel. Then, the sound waves of the sound emitted by the diaphragm 2 will diffract and reflect different frequency points of the sound waves when encountering the hole walls at different positions of the diaphragm accommodating hole 12, so that when measuring at the audio receiving point, there will be no superposition or cancellation of a certain frequency point at this position to cause the sound pressure level to be unstable, so as to ensure good sound effects.

[0060] Furthermore, in some embodiments, please refer to Figures 2 to 5, the widths of the diaphragm accommodating holes 12 at different positions are different. Some achievable structures of the diaphragm accommodating holes 12 are that, along the length direction of the diaphragm accommodating hole 12, the shapes of the hole walls on the opposite sides of the diaphragm accommodating hole 12 on the peripheral side of the magnet mounting groove 13 are different, so that the distances from the hole walls at different positions to the diaphragm 2 are different, so that the same audio will not be superimposed or canceled at the same position. For example, the hole walls of the diaphragm accommodating hole 12 on the peripheral side of the magnet mounting groove 13 are symmetric with respect to the middle plane of the diaphragm 2 parallel to the diaphragm accommodating hole 12, and the hole walls of the diaphragm accommodating hole 12 are inclined planes, wavy, M-shaped, arc-shaped, S-shaped or any irregular shape.

[0061] Of course, the hole walls on both sides of the diaphragm accommodating hole 12 can also be inclined planes or other regular or irregular shapes along the thickness direction of the single-layer speaker bracket 10, as long as they are not parallel to the diaphragm 2, and specific limitations are not made in this embodiment.

[0062] Please refer to Figure 4 and Figure 5 , some other achievable structures for the different widths of the diaphragm accommodating holes 12 at different positions are that the shapes of the hole walls at different positions of the diaphragm accommodating hole 12 on the peripheral side of the magnet mounting groove 13 are all different, so as to ensure that the hole walls on both sides of the diaphragm accommodating hole 12 are not parallel.

[0063] Specifically, please refer to Figure 4 and Figure 5, the single-layer speaker bracket 10 includes a plurality of bracket plates 11 stacked and bonded in sequence. The shapes of the hole walls of the diaphragm accommodating holes 12 on the circumferential sides of the magnet mounting grooves 13 of each bracket plate 11 are different. For example, along the length direction of the diaphragm accommodating hole 12, on some of the bracket plates 11, the hole walls on both sides of the diaphragm accommodating hole 12 are inclined planes whose widths gradually widen from the magnet mounting groove 13 towards both ends of the diaphragm accommodating hole 12, and the inclination angles of the hole walls of the diaphragm accommodating holes 12 of different bracket plates 11 are different. On some other bracket plates 11, the hole walls on both sides of the diaphragm accommodating hole 12 are symmetric with respect to the middle plane of the diaphragm 2 parallel to the diaphragm accommodating hole 12. Taking the hole wall of the diaphragm accommodating hole 12 on one side as an example, the hole wall of the diaphragm accommodating hole 12 on the circumferential side of the magnet mounting groove 13 is in a curved shape, an M shape, an arc shape or other shapes starting from the magnet mounting groove 13 towards the end of the diaphragm accommodating hole 12. On still some other bracket plates 11, the hole walls on both sides of the diaphragm accommodating hole 12 on the circumferential side of the magnet mounting groove 13 are both in irregular shapes. The single-layer speaker bracket 10 can be a random stack of the above-mentioned various-shaped bracket plates 11, or there can be multiple bracket plates 11 with the diaphragm accommodating hole 12 in one of the shapes, and the bracket plates 11 with the same-shaped diaphragm accommodating holes 12 are interspersed with bracket plates 11 with the diaphragm accommodating hole 12 in other shapes. The embodiments of the present application do not make specific limitations on this as long as the widths at different positions of the diaphragm accommodating holes 12 on the circumferential side of the magnet mounting groove 13 are different, and the present embodiment does not make specific limitations. The structure in which the plurality of bracket plates 11 are stacked and bonded in sequence can greatly improve the resonance of the single-layer bracket plate 11 when the diaphragm 2 vibrates and sounds because of the adhesive between different bracket plates 11. In addition, it can also reduce the difficulty of manufacturing the hole walls of the diaphragm accommodating holes 12 and save costs.

[0064] Further, in some embodiments of the present application, the bracket plate 11 is a metal plate. Since the metal has strong rigidity and a high natural frequency, resonance occurs when the diaphragm 2 vibrates, resulting in distortion. However, adjacent two bracket plates 11 are connected by an adhesive bonding method, and the adhesive between adjacent two bracket plates 11 can change the overall natural frequency of the single-layer speaker bracket 10, thereby avoiding the occurrence of resonance. From one perspective, because the resonance frequency of the metal is high, when the metal resonates, the adhesive layer can absorb the vibration energy of the metal, thereby eliminating resonance. In another embodiment of the present application, the bracket plate 11 is selected to be a material with a certain strength and a relatively low resonance frequency, such as an acrylic plate, a carbon fiber plate, etc. There is a relatively wide range of choices in material selection, and the embodiments of the present application do not make specific limitations.

[0065] In order to further prevent the vibration of the single-layer sound box bracket 10, in some embodiments of the present application, the single-layer sound box bracket 10 further includes a buffer member. A buffer member is provided between two adjacent bracket plates 11. The buffer member can absorb vibration. When the bracket plate 11 vibrates under the influence of sound, the buffer member can absorb the vibration to change the vibration frequency of the entire single-layer sound box bracket 10 and avoid the occurrence of resonance.

[0066] It should be noted that the minimum value of the width of the diaphragm accommodation hole 12 in the embodiments of the present application is greater than or equal to the width of the opposed gap, which can ensure that there is enough space for the diaphragm 2 to vibrate and avoid the diaphragm 2 colliding with the hole walls on both sides of the diaphragm accommodation hole 12 when vibrating.

[0067] Since the magnet 30 has a certain height, in some embodiments of the present application, when the single-layer sound box bracket 10 is a single bracket plate 11, in order to make the magnet installation groove 13 have enough height to accommodate the magnet 30, the thickness of the single-layer sound box bracket 10 is greater than the height of the magnet 30. When the single-layer sound box bracket 10 is formed by laminating and bonding two bracket plates 11, at the magnet installation groove 13, the upper and lower bracket plates 11 are provided with inner grooves in directions away from each other. The depth of the inner groove is less than the thickness of the single side wall of the bracket plate 11, and the upper and lower bracket plates 11 are buckled together to form the magnet installation groove 13. When the single-layer sound box bracket 10 is formed by laminating multiple bracket plates 11, taking the position of the magnet installation groove 13 as the reference for lamination, along the height direction of the single-layer sound box bracket 10, the bracket plates 11 at the top and bottom do not have inner grooves at the position of the magnet installation groove 13 to form the upper and lower groove walls of the magnet installation groove 13, while the bracket plates 11 in the middle are provided with concave holes with the same shape at the position of the magnet installation groove 13. When multiple bracket plates 11 are laminated and bonded together, a magnet installation groove 13 with one side open is formed.

[0068] In order to ensure the strength of the magnetic field, in some embodiments of the present application, the height of the magnet 30 is relatively large, which may lead to an excessive thickness of the single-layer sound bracket 10 for accommodating the magnet 30. The thicker the single-layer sound bracket 10 is, the more obvious the problem becomes. It can be understood that high-frequency sound waves have short wavelengths. After encountering obstacles, they will diffract or reflect, and at the listening position, they will inevitably be superimposed or canceled, resulting in an increase or attenuation of the sound pressure level at a certain frequency point. The single-layer sound bracket 10 in the embodiments of the present application is such an obstacle. The thicker the single-layer sound bracket 10 is, the greater the impact on the frequency response curve, and the more unfavorable it is to the sound quality of the speaker. Therefore, in some embodiments of the present application, the thickness of the single-layer sound bracket 10 at the circumferential side of the magnet mounting groove 13 is less than the thickness of the part of the single-layer sound bracket 10 at the magnet mounting groove 13. Since the magnet mounting groove 13 needs to accommodate the magnet 30, the thickness of the part of the single-layer sound bracket 10 at the magnet mounting groove 13 is greater than the thickness of the magnet 30, while the thickness of the part of the single-layer sound bracket 10 at the circumferential side of the magnet mounting groove 13 can be less than the thickness of the magnet 30, so as to reduce the ability of the single-layer sound bracket 10 to obstruct medium and high-frequency sound waves.

[0069] In some embodiments of the present application, for the single-layer sound bracket 10 formed by laminating and bonding multiple support plates 11, the shapes of the circumferences of the support plates 11 in different layers can be different. For example, on the outer periphery of the single-layer sound bracket 10, a stepped staggered structure is formed between the support plates 11 in different layers, and along the thickness direction of the single-layer sound bracket 10 from bottom to top, an inclined upward stepped staggered structure and an inclined downward stepped staggered structure are alternately arranged in sequence. No specific limitation is made in the embodiments of the present application here.

[0070] To facilitate understanding of the structure of the magnet mounting groove 13 and the reason for the position setting of the diaphragm 2 in the speaker stand 1, the sound generation principle of the diaphragm 2 will be described first.

[0071] Generally, the magnet 30 has an N pole (north pole) and an S pole (south pole). The so-called opposite poles facing each other means that two magnets 30 are arranged opposite to each other, and the polarities of the opposite poles are the same. The opposite poles do not fit together, but have a certain gap to form an effective magnetic field. Please refer to Figure 7 .

[0072] The diaphragm 2 is inserted into the opposite gap, and the conductor is arranged on the diaphragm 2 and on the circumferences of the projections of the magnets 30 on both sides of the diaphragm 2 to ensure that the conductor is in the magnetic field with the best strength and stability. When an electric current passes through the conductor, the conductor will be affected by the magnetic force, causing the conductor to drive the diaphragm 2 to vibrate and emit sound.

[0073] Further, please refer to Figure 3, a spacer groove 14 may be provided between adjacent groove walls of two adjacent magnet mounting grooves 13. The bottom wall of the spacer groove 14 may be a plane parallel to the diaphragm 2, may be an inclined plane with a certain angle, or may be one of the shapes such as V-shaped, M-shaped, arc-shaped, wavy, etc.

[0074] It can be understood that the magnet 30 will not only generate a magnetic field at the opposed gap, but also generate a magnetic field on the side away from the opposed gap. For the convenience of understanding and description, the magnetic field located at the opposed gap will be hereinafter referred to as the positive magnetic field, and the magnetic field generated on the side away from the opposed gap will be referred to as the negative magnetic field. In order to reduce the weakening of the positive magnetic field caused by the short circuit between the negative magnetic field and the positive magnetic field, in some embodiments of the present application, please refer to Figure 2 , Figure 3 , two adjacent magnet mounting grooves 13 on the same side are respectively installed with two magnets 30 with opposite polarities. Specifically, the internal magnetic field direction of the magnet 30 is perpendicular to the diaphragm 2. The magnetic pole of one magnet 30 facing the diaphragm 2 is the N pole, and the magnetic pole of the other magnet 30 facing the diaphragm 2 is the S pole. The sides of two magnet mounting grooves 13 on the hole wall on one side of the diaphragm accommodation hole 12 away from the opening of the magnet mounting groove 13 communicate with each other to form an accommodation space 15. A magnetic conductive member 40 is provided in the accommodation space 15. At least a part of the side of the magnet mounting groove 13 away from the opening is covered by the magnetic conductive member 40, that is to say, the magnetic conductive member 40 penetrates through two magnet mounting grooves 13. When two magnets 30 with opposite polarities are placed in the magnet mounting grooves 13, they can be attracted to the magnetic conductive member 40, and the negative magnetic field will be conducted in the magnetic conductive member 40, thereby reducing the short circuit with the positive magnetic field. In addition, as shown in Figure 2 , the magnetic conductive member 40 cannot move along the width direction of the sound single-layer bracket 10 under the restriction of the groove wall between two adjacent magnet mounting grooves 13, and the attraction between the magnet 30 located in the magnet mounting groove 13 and the magnetic conductive member 40 restricts the movement of the magnetic conductive member 40 along the length direction of the sound single-layer bracket 10. The magnet 30s with the same poles facing each other in the alignment design repel each other, so that the magnet 30 can be stably located in the magnet mounting groove 13. At the same time, the magnetic conductive member 40 also restricts the position of the magnet 30 in the magnet mounting groove 13, so as to ensure that neither the magnetic conductive member 40 nor the magnet 30 will shift. In order to further restrict the position between the magnet 30 and the magnetic conductive member 40, both the magnet 30 and the magnetic conductive member 40 are adhered to the magnet mounting groove 13 or the accommodation space 15 by an adhesive.

[0075] For the convenience of installing the magnetic member and the magnetic conductive member 40, in some embodiments of the present application, please refer to Figure 2, along the width direction of the single-layer sound bracket 10, the upper end of at least one magnet mounting groove 13 communicates with and penetrates through the upper side of the single-layer sound bracket 10 to form a mounting hole. The magnetic conduction member 40 and the magnet 30 are both installed through the mounting hole, or the upper side of the accommodation space 15 penetrates through the single-layer sound bracket 10 to form a mounting hole. The magnetic conduction member 40 is installed in the accommodation space 15 through the mounting hole, and the magnet 30 is installed in the magnet mounting groove 13 from the opening of the magnet mounting groove 13 and is attracted to the magnetic conduction member 40 through the side of the magnet mounting groove 13 away from the opening for positioning. As long as the positions of the magnetic conduction member 40 and the magnet 30 can be restricted, no specific limitation is made in this embodiment. Further, the single-layer sound bracket 10 further includes a cover plate 16. The cover plate 16 is movably arranged on the mounting hole to open or block the mounting hole, so as to facilitate the taking and placing of the magnet 30 and the magnetic member. The cover plate 16 and the single-layer sound bracket 10 can be adhesively connected.

[0076] In some embodiments of the present application, please refer to Figures 2 to 3 , at least a pair of opposite corners of the diaphragm accommodation holes 12 on at least one support plate 11 are each provided with a diaphragm suspension structure 17 to suspend the diaphragm 2. In order to fix the diaphragm 2 in the corresponding position and provide a certain restoring force during vibration, the diaphragm 2 is suspended on each single-layer sound bracket 10 of the sound rack 1 through an elastic suspension assembly. One end of the elastic suspension assembly is connected to the diaphragm 2, and the other end is connected to the diaphragm suspension structure 17. Specifically, when the diaphragm 2 vibrates under the action of the magnetic field force and generates a displacement, the elastic suspension assembly will be stretched. When the magnetic field force is withdrawn, the restoring force generated by the elastic suspension assembly enables the diaphragm 2 to return to the initial position. There may be diaphragm suspension structures 17 at all four corners of the diaphragm accommodation hole 12, or there may be diaphragm suspension structures 17 at two corners on one pair of diagonals of the diaphragm accommodation hole 12 of a single-layer sound bracket 10, and there may be diaphragm suspension structures 17 at two corners on the other pair of diagonals of the diaphragm accommodation hole 12 of the adjacent single-layer sound bracket 10. Or there may be at least a pair of diaphragm suspension structures 17 oppositely arranged on the opposite two hole walls along the width direction of the diaphragm accommodation hole 12. As long as the diaphragm 2 can be stably suspended, no specific limitation is made in the embodiments of the present application.

[0077] Embodiment Two:

[0078] This embodiment provides an audio device, such as Figure 1As shown in the figure, the audio device includes a speaker stand 1, which is formed by connecting a plurality of spaced-apart single-layer speaker brackets 10 in a manner of connecting with studs at intervals by screws, at least a pair of magnets 30, and a diaphragm 2. At least a pair of magnets 30 are symmetrically installed with the same poles facing each other in the magnet mounting grooves 13 of the single-layer speaker brackets 10 to form a stable magnetic field. The diaphragm 2 is inserted into the diaphragm accommodation holes 12 of each layer of single-layer speaker brackets 10. The conductors on the diaphragm 2 are located on the periphery of the projection of the magnet 30 on the diaphragm 2. When there is current passing through the conductors, they can be affected by the magnetic field and converted into vibrations of the conductors, thereby emitting sound.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single-layer bracket for a sound device, characterized in that, Comprising: At least one support plate, a plurality of the support plates are stacked and bonded, and a through diaphragm accommodating hole is provided on the support plate. Along the length direction of the diaphragm accommodating hole, at least a pair of magnet mounting grooves with opposite openings for mounting magnets are symmetrically arranged on the hole walls on both sides of the diaphragm accommodating hole. There is an opposing gap between two symmetrically arranged magnet mounting grooves, and at least a pair of magnet pairs of the same level are accommodated in the magnet mounting grooves on the corresponding side; The widths of the diaphragm accommodating holes at different positions on the periphery of the magnet mounting grooves are the same or different.

2. The single-layer bracket for a sound system according to claim 1, wherein An interval groove may be provided between adjacent groove walls of two adjacent magnet mounting grooves.

3. The single-layer bracket for a sound device according to claim 1, wherein, The widths of the diaphragm accommodating holes at different positions are different.

4. The single-layer bracket for audio according to claim 3, characterized in that Along the length direction of the diaphragm accommodating hole, The shapes of the hole walls on the opposite sides of the diaphragm accommodating hole on the periphery of the magnet mounting groove are different; or The shapes of the hole walls at different positions of the diaphragm accommodating hole on the periphery of the magnet mounting groove are all different.

5. The single-layer bracket for the sound device according to claim 3, wherein The shapes of the diaphragm accommodating holes on the support plates in different layers are different.

6. The single-layer sound bracket according to any one of claims 1 to 5, characterized in that, On one side hole wall of the diaphragm accommodating hole, the sides of a plurality of the magnet mounting grooves facing away from the opening are interconnected to form an accommodating space, and a magnetic conductive member is arranged in the accommodating space, and the magnet is attracted to the magnetic conductive member.

7. The single-layer sound bracket according to claim 6, wherein Along the width direction of the single-layer sound box support, The upper ends of at least one of the magnet mounting grooves communicate and penetrate through the upper side surface of the single-layer sound box support to form a mounting hole, and the magnetic conductive member and the magnet are both mounted through the mounting hole; or The upper side of the accommodating space penetrates through the single-layer sound box support to form a mounting hole, and the magnetic conductive member is mounted through the mounting hole; The single-layer sound box support further includes a cover plate, and the cover plate can be movably covered on the mounting hole to open or block the mounting hole, and reduce the probability of resonance of the single-layer sound box support.

8. The single-layer sound bracket according to any one of claims 1 to 5, characterized in that, The single-layer sound box support further includes: A buffer member, and a buffer member is provided between two adjacent support plates, and the buffer member can absorb vibration.

9. The single-layer sound bracket according to any one of claims 1 to 5, characterized in that Both ends of the diaphragm accommodating hole on at least one of the support plates have diaphragm suspension structures.

10. A sound rack, characterized in that, Comprising: A plurality of spaced and stacked single-layer sound box supports, and spacer columns for connecting two adjacent single-layer sound box supports at intervals; The single-layer sound box support is the single-layer sound box support according to any one of claims 1 to 9.

11. An audio device, characterized in that, Comprising: A sound box rack, located at the position to be installed, and the sound box rack is the sound box rack according to claim 10; A diaphragm, passing through the diaphragm accommodating hole, and the conductor on the diaphragm is located in the magnetic field formed by the opposing magnets of the sound box rack.

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