Support panel for an electronic device and electronic device
The support panel with concave portions and reinforcing bars addresses the challenge of achieving lightweight and cost-effective acoustic performance by optimizing panel shape, enhancing stiffness and reducing vibration.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- HARMAN INT IND INC
- Filing Date
- 2024-12-27
- Publication Date
- 2026-07-02
AI Technical Summary
Existing loudspeaker designs face challenges in achieving good acoustic performance while maintaining a lightweight and cost-effective structure, as thicker panels to reduce acoustic leakage lead to increased weight and cost, which contradicts the trend towards miniaturization and reduced weight.
A support panel with intensity-adjusting structures featuring concave portions and reinforcing bars is used, providing enhanced stiffness and acoustic performance without significantly increasing weight or cost, by optimizing panel shape and distribution.
The support panel achieves improved stiffness and reduced vibration, resulting in better acoustic performance with minimal material usage and weight, outperforming traditional designs in terms of mechanical stiffness and noise radiation.
Smart Images

Figure CN2024143255_02072026_PF_FP_ABST
Abstract
Description
SUPPORT PANEL FOR AN ELECTRONIC DEVICE AND ELECTRONIC DEVICETECHNICAL FIELD
[0001] The present disclosure relates to a support panel for an electronic device and an electronic device.BACKGROUND
[0002] A loudspeaker comprises a housing and a speaker unit arranged in the housing. During normal operation of the sound box, vibrations are generated in the diaphragm assembly, magnetic components, etc. inside the sound box. The vibrations are transmitted to an external equipment or the ground contacted to the sound box, resulting in continuous vibration between the sound box and the external equipment or the ground.
[0003] Loudspeaker’s back cavity is surrounded by flexible panels, which would lead the emergence of obvious “box sound” if the panels’ thicknesses are too low. In that case, the panel can no longer be regarded as a rigid wall, but a flexible structure with limited stiffness decided by its boundary condition. The whole responses of the loudspeaker system actually contain the volume velocity of the loudspeaker diaphragm, the volume velocity of the port or passive radiator (PR) and the velocity responses of surrounded panels. Meanwhile, these responses have differences in amplitudes and phases (i.e., different timbres) .
[0004] In the prior art, there is no good electric-mechanic-acoustic model available to quantitatively calculate and explain the influences of the panels composing a sound box. In terms of housings used for such acoustic electronics, acoustic leakage is often caused by the panel's own vibration.
[0005] Measures to eliminate this acoustic leakage have also been proposed in the prior art.
[0006] In some existing designs, panels with greater thickness are used. The increased thickness of the panels results in greater rigidity, thereby overcoming acoustic leakage due to panel vibration. However, thicker panels also result in an increase in the overall weight and cost of the equipment. This is not in line with the design trend towards miniaturization and light weighting of equipment. In some existing designs, periodically reinforced or periodically raised plates are used. For this purpose, strength adjustment structures, such as reinforcement elements or bumps, raised from the surface of the plate are provided uniformly and comprehensively across the surface of the plate. Such large areas of raised strength adjustment structures result in higher rigidity, thereby overcoming acoustic leakage due to panel vibration. However, thicker panels of this design also result in higher overall equipment weight and increased cost.
[0007] Therefore, the technical problem to be solved by the present disclosure is to provide a support panel for an electronic device, which can be manufactured in a simple structure and with a low cost, and which can provide good stiffness while also ensuring a lightweight design and good acoustic performance.SUMMARY
[0008] One aspect of the present disclosure relates to a support panel for an electronic device, comprising:
[0009] a plate-shaped main body,
[0010] a plurality of intensity-adjusting structures dispersed on the main body, wherein each intensity-adjusting structure comprises at least two concave portions retracted inwardly from a top surface of the main body and at least one reinforcing bar extending between the concave portions,
[0011] wherein the intensity-adjusting structures are arranged centrally symmetrically on edge of the support panel.
[0012] According to one or more embodiments of the present disclosure, at least four intensity-adjusting structures are provided.
[0013] According to one or more embodiments of the present disclosure, the support panel comprises a rectangular cross-section with an aspect ratio of 0.8: 1 to 1.2: 1, and the intensity-adjusting structures are arranged at four corners of the support panel.
[0014] According to one or more embodiments of the present disclosure, the support panel comprises a circular cross-section and the intensity-adjusting structures are arranged central symmetrically around a circle center of the support panel.
[0015] According to one or more embodiments of the present disclosure, the support panel comprises an elliptical cross-section with a ratio of long axis to short axis of not greater than 1.2: 1, wherein the intensity-adjusting structures are arranged mirror-symmetrically, respectively.
[0016] According to one or more embodiments of the present disclosure, the concave portion of each intensity-adjusting structure comprises a rectangular cross-section.
[0017] According to one or more embodiments of the present disclosure, the concave portion of each intensity-adjusting structure comprises a square cross-section.
[0018] According to one or more embodiments of the present disclosure, the concave portion of each intensity-adjusting structure comprises a scalloping cross-section.
[0019] According to one or more embodiments of the present disclosure, the concave portion of each intensity-adjusting structure comprises a sector-ring cross-section.
[0020] According to one or more embodiments of the present disclosure, the concave portion of each intensity-adjusting structure comprises a triangular cross-section.
[0021] According to one or more embodiments of the present disclosure, the reinforcing bar is lower in a height direction than the top surface of the main body of the support panel.
[0022] According to one or more embodiments of the present disclosure, the reinforcing bar is higher in a height direction than the top surface of the main body of the support panel.
[0023] According to one or more embodiments of the present disclosure, the reinforcing bar is flush in a height direction with the top surface of the main body of the support panel.
[0024] According to one or more embodiments of the present disclosure, each intensity-adjusting structure comprises at least two reinforcing bars.
[0025] According to one or more embodiments of the present disclosure, each intensity-adjusting structure comprises two reinforcing bars extending perpendicular to each other.
[0026] According to one or more embodiments of the present disclosure, each intensity-adjusting structure comprises at least three reinforcing bars which extend radially and are evenly spaced at a same angular spacing.
[0027] According to one or more embodiments of the present disclosure, the support panel is constructed integrally.
[0028] Another aspect of the present disclosure relates to an electronic device having a housing, wherein the housing comprises a support panel mentioned above.
[0029] According to one or more embodiments of the present disclosure, the electronic device is a sound box assembly.BRIEF DESCRIPTION OF THE DRAWINGS
[0030] So that the manner in which the above recited features of the various embodiments can be understood in detail, a more detailed description of the inventive concepts, briefly summarized above, can be had by reference to various embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of the inventive concepts and are therefore not to be considered limiting of scope in any way, and that there are other equally effective embodiments.
[0031] FIG. 1 schematically illustrates a loudspeaker’s vibro-acoustic model;
[0032] FIG. 2 schematically illustrates a three-dimensional plot of the mechanical response of (1, 1) panel model;
[0033] FIG. 3 schematically illustrates a top view of the support panel according to an embodiment of the present disclosure;
[0034] FIG. 4 schematically illustrates an enlarged view of region A of FIG. 3;
[0035] FIG. 5 schematically illustrates a sectional view of a support panel of according to an embodiment of the present disclosure along the section line B-B shown in FIG. 3;
[0036] FIG. 6 schematically illustrates a sectional view of a support panel of according to another embodiment of the present disclosure along the section line B-B shown in FIG. 3;
[0037] FIG. 7 schematically illustrates a sectional view of a support panel of according to another embodiment of the present disclosure along the section line B-B shown in FIG. 3;
[0038] FIG. 8A-FIG. 8G schematically illustrate top views of the support panel according to variant embodiments of the present disclosure;
[0039] FIG. 9 schematically illustrates the average surface velocity of five panels of the same mass.DETAILED DESCRIPTION
[0040] The disclosure can be better understood with reference to the following drawings and description. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the disclosure. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views.
[0041] As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises” , “comprising” , “includes” , and / or “including” , as used herein, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” and the symbol “ / ” are meant to include any and all combinations of one or more of the associated listed items. Additionally, while the terms first, second, etc. may be used herein to describe various elements, components, steps or calculations, these elements, components, steps or calculations should not be limited by these terms, rather these terms are only used to distinguish one element, component, step or calculation from another. For example, a first component could be termed a second component, similarly a first calculation could be termed a second calculation; similarly a first step could be termed a second step; all without departing from the scope of this disclosure.
[0042] One aspect of the present disclosure relates to a support panel for an electronic device, comprising: a plate-shaped main body, a plurality of intensity-adjusting structures dispersed on the main body, wherein each intensity-adjusting structure comprises at least two concave portions retracted inwardly from a top surface of the main body and at least one reinforcing bar extending between the concave portions, wherein the intensity-adjusting structures are arranged centrally symmetrically on edge of the support panel.
[0043] A variety of stiffness modified plates are provided in the prior art, such as periodic stiffened panels, periodic raised panels, and equal thickness panels. Thicker panels lead to a higher overall weight of the equipment and higher costs. This is not in line with the design trend towards smaller and lighter equipment.
[0044] Unlike prior art, the present disclosure mainly focuses on the panel shape optimization for more stiffness and thus less vibration and noise radiation, especially when the panel has a limited size and boundary condition in real use like sound boxes and other audio products.
[0045] FIG. 1 schematically illustrates a Loudspeaker’s vibro-acoustic model.
[0046] As shown FIG. 1, for a loudspeaker system with flexible panels composing the sound box, the responses (i.e., the unknown quantities) can be divided into the following four main components:
[0047] (1) The displacement wl and volume velocity Ul = jwSlwl of the loudspeaker diaphragm;
[0048] (2) The volume velocity Uz of the PR (Passive Radiator) or Vented Port;
[0049] (3) Displacement wn and volume velocity Un of each side wall of the sound box;
[0050] (4) The sound pressure response pc inside the sound box.
[0051] Meanwhile, wn and pc should be decomposed into the linear combinations of their normal modes to help solve the continuous partial differential equations, which are derived from the Minimum Potential Energy Principle:
[0052] An and Pm are the response vectors, whose quantities correspond to the relating modes. This method can get high-order mode responses of the panels and pressure in the cavity and thus more precise than the lumped-parameter model. The topological stiffened panel has the ability to attenuate Un with more mechanical stiffness.
[0053] Based on the model above mentioned, multiple intensity-adjusting structures are provided at edge of the panel, each of the intensity-adjusting structures comprises concave portions and thereby constructing an edge hole panel with ribs, wherein the ribs are constructed as reinforcing bars extending between the concave portions of each intensity-adjusting structure for more stiffness. In the present disclosure, the support panel thus constructed is also referred to as a topologically stiffened panel.
[0054] For the same mass, the topological Stiffened panel’s velocity is about 5 dB lower than the equal thickness panel. For the same stiffness, the topological stiffened panel can use only 75%mass of the equal thickness panel and get the same stiffness.
[0055] The n-th Panels’ mechanical stiffness:
[0056] Dn is the bending stiffness of the panel, which is proportion to the thickness cubed. The shape function φni is:
[0057] According to one or more embodiments of the present disclosure, the support panel comprises a rectangular cross-section with an aspect ratio of 0.8: 1 to 1.2: 1, and the intensity-adjusting structures are arranged at four corners of the support panel.
[0058] According to one or more embodiments of the present disclosure, the support panel comprises a circular cross-section and the intensity-adjusting structures are arranged central symmetrically around a circle center of the support panel.
[0059] According to one or more embodiments of the present disclosure, the support panel comprises an elliptical cross-section with a ratio of long axis to short axis of not greater than 1.2: 1, wherein the intensity-adjusting structures are arranged mirror-symmetrically, respectively.
[0060] A support panel having this shape has similar dimensions in its planar extensions in at least two dimensions, i.e. in x-axis direction and in y-axis direction, thus it is not significantly longitudinally constructed. The distance from the centre of the support panel to points on the edge area of the support panel is substantially equal or similar.
[0061] FIG. 2 schematically illustrates a three-dimensional plot of the mechanical response of (1, 1) panel model.
[0062] In low frequencies, a panel with limited size and certain boundaries would first oscillate in its (1, 1) model. More thickness is usually adopted to prevent the panel’s oscillation, leading to more mass. From the FIG. 2 of (1, 1) mode and mechanical stiffness expression of the panel, it can be deduced that more thickness in the panel’s center is precisely beneficial, while the thickness in the edge has small impact. In that case, we could thinning the edge and add bars in the center, which is the principle of the edge hole panel and topological stiffened panel.
[0063] According to one or more embodiments of the present disclosure, at least four intensity-adjusting structures are provided. These intensity-adjusting structures are arranged only at the edges of the support panel and are not provided in the central region thereof. As mentioned above, this is because the support panel has a smaller mechanical response at its edges and a larger mechanical response in its central region. The concave portions of the strength adjusting structure have a smaller thickness relative to the body of the bearing plate, thereby saving material and thereby reducing the weight of the support panel without appreciably impairing the overall stiffness, and the reinforcement bars in the intensity adjusting structure can efficiently increase the stiffness in a material-saving manner.
[0064] The concave portions and reinforcing bars of the intensity-adjusting structure can be variously designed in terms of shape, size and number, respectively. For example, the concave portion may have a rectangular, in particular square cross-section, a scalloping cross-section, a sector-ring cross-section, a triangular cross-section. Each intensity-adjusting structure may have one or more reinforcing bars. In the case of having a plurality of reinforcing bars, these reinforcing bars may cross each other perpendicularly or at an angle to each other.
[0065] In addition, another aspect of the present disclosure relates to an electronic device having a housing, wherein the housing comprises a support panel mentioned above. Preferably, the electronic device is a sound box assembly. Electronic devices are not limited to a loudspeaker device, but may also be a projector, a refrigerator, or a television set, etc., as long as it includes magnetic components, diaphragm components which are capable of broadcasting sound by electroacoustic action, and generate vibration during operation.
[0066] FIG. 3 schematically illustrates a top view of the support panel 100 according to an embodiment of the present disclosure. FIG. 4 schematically illustrates an enlarged view of region A shown in FIG. 3.
[0067] The support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars 24 extending between the adjacent concave portions 22.
[0068] The support panel 100 comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. The four concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size and all have a square cross-section. These two reinforcing bars 24 cross each other perpendicularly and are perpendicular to two edges of the support panel 100 and parallel to other two edges thereof.
[0069] As shown in FIG. 5, the concave portions 22 are recessed downwardly from the top surface 102 of the main body 10. Viewed in a height direction z, a thickness D0 between the top surface 102 and a bottom surface 104 of the main body 10 is significantly greater than a thickness D1 between the bottom 222 of the concave portion 22 and the bottom surface 104 of the main body 10. For example, D0 may be 8-14 mm and D1 may be 4-6 mm. According to the embodiment, the reinforcing bar 24 is flush in the height direction z with the top surface 102 of the main body 10. In this embodiment, it is possible to manufacture the support panel 100 in a process-simple manner.
[0070] In other embodiments, however, the reinforcing bars 24 may also be below the top surface 102 of the main body 10 of the support panel 100 in the height direction z, as shown in FIG. 6; or the reinforcing bars 24 may also extend beyond the top surface 102 of the main body 10 of the support panel 100 in the height direction z, as shown in FIG. 7.
[0071] In embodiments not shown, the reinforcing bars 24 may even also have a variable height instead of a constant height, depending on the field of application and the different requirements for acoustic effects and mechanical properties.
[0072] FIG. 8A-FIG. 8G schematically illustrate top views of the support panel according to variant embodiments of the present disclosure.
[0073] According to an embodiment shown in FIG. 8A, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises two concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and one reinforcing bar 24 extending between the both concave portions 22.
[0074] The support panel 100 also comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. Both concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size and all have a rectangular cross-section. The reinforcing bar 24 is perpendicular to two edges of the support panel 100 and parallel to other two edges thereof.
[0075] According to an embodiment shown in FIG. 8B, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars 24 extending between two adjacent concave portions 22.
[0076] The support panel 100 also comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. Each intensity-adjusting structure 20 is constructed squarely overall, with two reinforcing bars 24 crossing each other perpendicularly and extending diagonally through the intensity-adjusting structure 20. Therefore, the four concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size and all have an isosceles right triangle cross section. The two reinforcing bars 24 are neither perpendicular nor parallel to the edge of the support panel 10, but are inclined at 45° with respect to the edge of the support panel 10.
[0077] According to an embodiment shown in FIG. 8C, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars 24 extending between two adjacent concave portions 22.
[0078] The support panel 100 also comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. The four concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size, and comprise a scalloping cross-section with a central angle of 90°, wherein curved edges of the scallops are radially outwardly oriented so as to combine through these four concave portions 22 to form a similarly circular cross-section. These two reinforcing bars 24 cross each other perpendicularly and are perpendicular to two edges of the support panel 100 and parallel to other two edges thereof.
[0079] According to an embodiment shown in FIG. 8C, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises three concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and three reinforcing bars 24 extending between two adjacent concave portions 22.
[0080] The support panel 100 also comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. The three concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size, and comprise a scalloping cross-section with a central angle of 120°, wherein curved edges of the scalloping are radially outwardly oriented so as to combine through these three concave portions 22 to form a similarly circular cross-section. These three reinforcing bars 24 extend between each of the two adjacent concave portions 22 and are radially and evenly spaced at an angular spacing of 120°.
[0081] Similar to the embodiment shown in FIG. 8C, the support panel 100 according to an embodiment shown in FIG. 8E comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars 24 extending between two adjacent concave portions 22.
[0082] The support panel 100 also comprises a square cross-section, wherein the four intensity-adjusting structures 20 are arranged at four corners of the square support panel 100, thereby realizing a central symmetrical arrangement. The four concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size, and comprise a scalloping cross-section with a central angle of 90°, wherein curved edges of the scalloping are radially outwardly oriented so as to combine through these four concave portions 22 to form a similarly circular cross-section. The two reinforcing bars 24 cross each other, and are neither perpendicular nor parallel to the edge of the support panel 10, but are inclined at 45° with respect to the edge of the support panel 10.
[0083] Unlike the embodiments of FIGS. 8C to 8E, in embodiments not shown, each of the intensity-adjusting structures 20 may also comprise more or fewer concave portions 22 having a scalloping cross-section. For example, each intensity-adjusting structure 20 comprises two concave portions 22 having a semi-circular cross-section and a reinforcing bar 24 extending therebetween. As an alternative, for example, each intensity-adjusting structure 20 comprises six concave portions 22 having a scalloping cross-section and six reinforcing bars 24 extending therebetween, wherein each concave portion 22 has an arcuate angle of about 60°.
[0084] According to an embodiment shown in FIG. 8F, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22a, 22b retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars, i.e. a first reinforcing bar 24a and a second reinforcing bar 24b extending between two adjacent concave portions 22.
[0085] The support panel 100 comprises a circular cross-section, wherein the four intensity-adjusting structures 20 are arranged on edge of the circular support panel 100 at evenly spaced angular distances with reference to the centre of the cross-section, thus forming a central symmetrical arrangement. Each intensity-adjusting structure 20 has two first concave portions 22a radially external and two second concave portions 22b radially external, respectively, wherein the two first concave portions 22a each extend along a common arcuate trajectory and the two second concave portions 22b extend along a common arcuate trajectory. The first concave portion 22a and the second concave portion 22b have approximately the same central angle, however the first concave portion 22a has a greater arc length than the second concave portion 22b. The first reinforcing bar 24a is arcuately constructed and extends between the first concave portion 22a and the second concave portion 22b. The second reinforcing bar 24a is constructed linearly, and extends between the both first concave portions 22a and between the both second concave portions 22b. In a particularly preferred embodiment, the arcuate trajectories followed by each of the first concave portions 22a, the second concave portions 22b and the first reinforcing bar 24a belong to concentric circles, wherein a straight line followed by the second reinforcing bar 24b points to the centre of the concentric circles.
[0086] Unlike the embodiment of FIG. 8F, in embodiments not shown, it is also possible to provide more or fewer intensity-adjusting structures 20, for example three, six intensity-adjusting structures 20, on the main body 10 which is circular in cross-section.
[0087] According to an embodiment shown in FIG. 8G, the support panel 100 comprises a plate-shaped main body 10, four intensity-adjusting structures 20 dispersed on the main body 10, wherein each intensity-adjusting structure 20 comprises four concave portions 22 retracted inwardly from a top surface 102 of the main body 10 and two reinforcing bars 24 extending between the concave portions 22.
[0088] The support panel 100 comprises an elliptical cross-section, wherein the four intensity-adjusting structures 20 are arranged opposite each other with reference to a long axis parallel to the x-axis and a short axis parallel to the y-axis of the ellipse. The four concave portions 22 of each intensity-adjusting structure 20 are identical in shape and size and all have a square cross-section. Both of the reinforcing bars 24 cross each other perpendicularly.
[0089] In embodiments not shown, intensity-adjusting structure 20 similar to that shown in FIG. 8F may also be provided on the main body 10 with a elliptical cross-section.
[0090] It is possible to adjust the shape of the main body 10 and the number and shape of the intensity-adjusting structure 20 as desired. In any case, however, the ratio of the dimensions of the main body 10 in both the x-axis and the y-axis is between 0.8: 1 and 1.2: 1, and the intensity-adjusting structures 20 are arranged only at the edge of the main body 10.
[0091] FIG. 9 schematically illustrates the average surface velocity of five panels of the same mass. Periodic stiffened panel, edge-hole panel without reinforcing bar, periodic raised panel, equal thickness panel, and support panel, i.e., topologically stiffened panel, according to the present disclosure, are tested separately under the same external conditions and with the same mass.
[0092] All the five panels are still made of medium density material and 40 mm in length and width. The equal thickness panel is 12 mm thick. The edge hole panel and topological stiffened panel are 18 mm thick and have the same volume and mass as the equal thickness panel. The periodic stiffened panel and periodic raised panel also have the same mass.
[0093] The boundary condition of each panel’s four broadsides is fixed-supported, while a pressure 1 Pa is exerted on the surface. The equal thickness panel and periodic raised panel nearly have no differences, while periodic stiffened Panel, edge hole panel and topological stiffened panel are attenuated by 2 dB, 3.5 dB and 5 dB.
[0094] Furthermore, the edge hole panel oscillates in 700 Hz, which attributes to the four side holes’ own resonances. topological stiffened panel could solve the resonances since bars are added in the edge holes.
[0095] In conclusion, topological stiffened panel has the best control effects and least vibration of the five panels with the same mass. In other words, topological stiffened panel has the least mass in the five panels with the same stiffness demanded.
[0096] The features, structures, or characteristics of one or more embodiments of the present disclosure may be suitably combined.
[0097] The present disclosure can be implemented as follows.
[0098] Item 1: a support panel for an electronic device, comprising:
[0099] a plate-shaped main body,
[0100] a plurality of intensity-adjusting structures dispersed on the main body, wherein each intensity-adjusting structure comprises at least two concave portions retracted inwardly from a top surface of the main body and at least one reinforcing bar extending between the concave portions,
[0101] wherein the intensity-adjusting structures are arranged centrally symmetrically on edge of the support panel.
[0102] Item 2: the support panel according to item 1, wherein at least four intensity-adjusting structures are provided.
[0103] Item 3: the support panel according to item 1 or 2, wherein the support panel comprises a rectangular cross-section with an aspect ratio of 0.8: 1 to 1.2: 1, and the intensity-adjusting structures are arranged at four corners of the support panel.
[0104] Item 4: the support panel according to any of items 1-3, wherein the support panel comprises a circular cross-section and the intensity-adjusting structures are arranged central symmetrically around a circle center of the support panel.
[0105] Item 5: the support panel according to any of items 1-4, wherein the support panel comprises an elliptical cross-section with a ratio of long axis to short axis of not greater than 1.2: 1, wherein the intensity-adjusting structures are arranged mirror-symmetrically, respectively.
[0106] Item 6: the support panel according to any of items 1-5, wherein the concave portion of each intensity-adjusting structure comprises a rectangular cross-section.
[0107] Item 7: the support panel according to any of items 1-6, wherein the concave portion of each intensity-adjusting structure comprises a square cross-section.
[0108] Item 8: the support panel according to any of items 1-7, wherein the concave portion of each intensity-adjusting structure comprises a scalloping cross-section.
[0109] Item 9: the support panel according to any of items 1-8, wherein the concave portion of each intensity-adjusting structure comprises a sector-ring cross-section.
[0110] Item 10: the support panel according to any of items 1-9, wherein the concave portion of each intensity-adjusting structure comprises a triangular cross-section.
[0111] Item 11: the support panel according to any of items 1-10, wherein the reinforcing bar is lower in a height direction than the top surface of the main body of the support panel.
[0112] Item 12: the support panel according to any of items 1-11, wherein the reinforcing bar is higher in a height direction than the top surface of the main body of the support panel.
[0113] Item 13: the support panel according to any of items 1-12, wherein the reinforcing bar is flush in a height direction with the top surface of the main body of the support panel.
[0114] Item 14: the support panel according to any of items 1-13, wherein each intensity-adjusting structure comprises at least two reinforcing bars.
[0115] Item 15: the support panel according to any of items 1-14, wherein each intensity-adjusting structure comprises at least two reinforcing bars extending perpendicular to each other.
[0116] Item 16: the support panel according to any of items 1-15, wherein each intensity-adjusting structure comprises at least three reinforcing bars which extend radially and are evenly spaced at a same angular spacing.
[0117] Item 17: the elastic support device according to any of items 1-16, wherein the support panel is constructed integrally.
[0118] Item 18: an electronic device having a housing, wherein the housing comprises a support panel according to any of items 1-17.
[0119] Item 19: the electronic device according to item 18, wherein the electronic device is a sound box assembly.
[0120] Any and all combinations of any of the claim elements recited in any of the claims and / or any elements described in this application, in any fashion, fall within the contemplated scope of the present invention and protection.
[0121] The descriptions of the various embodiments have been presented for purposes of illustration, but are not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
[0122] While the preceding is directed to embodiments of the present disclosure, other and further embodiments of the disclosure can be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims
1.A support panel (100) for an electronic device, comprising:a plate-shaped main body (10) ,a plurality of intensity-adjusting structures (20) dispersed on the main body (10) , wherein each intensity-adjusting structure (20) comprises at least two concave portions (22, 22a, 22b) retracted inwardly from a top surface (102) of the main body (10) and at least one reinforcing bar (24, 24a, 24b) extending between the concave portions,wherein the intensity-adjusting structures (20) are arranged central symmetrically on edge of the support panel (100) .2.The support panel (100) according to claim 1, wherein at least four intensity-adjusting structures (20) are provided.3.The support panel (100) according to claim 2, wherein the support panel (100) comprises a rectangular cross-section with an aspect ratio of 0.8: 1 to 1.2: 1, and the intensity-adjusting structures (20) are arranged at four corners of the support panel (100) .4.The support panel (100) according to claim 2, wherein the support panel (100) comprises a circular cross-section and the intensity-adjusting structures (20) are arranged central symmetrically around a circle center of the support panel (100) .5.The support panel (100) according to claim 2, wherein the support panel (100) comprises an elliptical cross-section with a ratio of long axis to short axis of not greater than 1.2: 1, wherein the intensity-adjusting structures (20) are arranged mirror-symmetrically, respectively.6.The support panel (100) according to claim 1, wherein the concave portion (22) of each intensity-adjusting structure (20) comprises a rectangular cross-section.7.The support panel (100) according to claim 6, wherein the concave portion (22) of each intensity-adjusting structure (20) comprises a square cross-section.8.The support panel (100) according to claim 1, wherein the concave portion (22) of each intensity-adjusting structure (20) comprises a scalloping cross-section.9.The support panel (100) according to claim 1, wherein the concave portion (22a, 22b) of each intensity-adjusting structure (20) comprises a sector-ring cross-section.10.The support panel (100) according to claim 1, wherein the concave portion (22) of each intensity-adjusting structure (200) comprises a triangular cross-section.11.The support panel (100) according to claim 1, wherein the reinforcing bar (24, 24a, 24b) is lower in a height direction (z) than the top surface (102) of the main body (10) of the support panel (100) .12.The support panel (100) according to claim 1, wherein the reinforcing bar (24, 24a, 24b) is higher in a height direction (z) than the top surface (102) of the main body (10) of the support panel (100) .13.The support panel (100) according to claim 1, wherein the reinforcing bar (24, 24a, 24b) is flush in a height direction (z) with the top surface (102) of the main body (10) of the support panel (100) .14.The support panel (100) according to claim 1, wherein each intensity-adjusting structure (20) comprises at least two reinforcing bars (24, 24a, 24b) .15.The support panel (100) according to claim 14, wherein each intensity-adjusting structure (20) comprises at least two reinforcing bars (24) extending perpendicular to each other.16.The support panel (100) according to claim 14, wherein each intensity-adjusting structure (20) comprises at least three reinforcing bars (24) which extend radially and are evenly spaced at a same angular spacing.17.The support panel (100) according to claim 1, wherein the support panel (100) is constructed integrally.18.An electronic device (200) having a housing, wherein the housing comprises a support panel (100) according to any of claims 1-17.19.The electronic device (200) according to claim 18, wherein the electronic device is a sound box assembly.