Speaker damping structure, speaker enclosure and projector

Abstract

This utility model belongs to the field of projector technology, and discloses a speaker vibration damping structure, a speaker enclosure, and a projector. The speaker vibration damping structure includes a speaker body and a damping component. A damping component is disposed on one side of the speaker body. The damping component includes two symmetrically arranged damping diaphragms, spaced at a preset distance. The area between the two damping diaphragms is aligned with the voice coil of the speaker body, so that the sound waves generated by the voice coil vibration can be absorbed by the two symmetrically arranged damping diaphragms. Through this arrangement, when the voice coil vibrates, the sound waves emitted by the voice coil vibration can be transmitted to the two damping diaphragms via two separate paths. The two damping diaphragms can simultaneously absorb the sound waves, thereby reducing the impact of the sound waves on the enclosure and support plate. This reduces the vibration of the enclosure and support plate, further improving the vibration damping effect of the speaker vibration damping structure, enhancing the sound production and vibration damping effect of the speaker enclosure, and improving the user experience of the projector.

Description

Technical Field

[0001] This utility model relates to the field of projector technology, specifically to a speaker damping structure, a speaker enclosure, and a projector. Background Technology

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, DVDs, game consoles, etc. through different interfaces to continuously play corresponding video signals.

[0003] As projectors have evolved, speaker power has increased to meet users' demands for high-quality sound. However, higher power also leads to greater vibration amplitude in the speaker cavity, which in turn causes vibration in the projector casing and internal light source components. While current technologies incorporate vibration damping structures, these structures are relatively simple and their damping effect is not ideal, resulting in projected image jitter and shaking, thus degrading the user experience.

[0004] Therefore, it is necessary to design a speaker damping structure, a speaker enclosure, and a projector to solve the problems existing in the prior art. Utility Model Content

[0005] The first objective of this invention is to provide a speaker damping structure, which aims to improve the shortcomings of existing projector damping structures with unsatisfactory damping effects and enhance the overall sound quality of the speaker.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A speaker damping structure includes a speaker body and a damping component. The damping component is disposed on one side of the speaker body. The damping component includes two symmetrically arranged damping diaphragms. The two damping diaphragms are spaced apart by a preset distance a. The area between the two damping diaphragms is aligned with the voice coil of the speaker body so that the sound waves generated after the voice coil vibrates can be absorbed by the two symmetrically arranged damping diaphragms respectively.

[0008] Preferably, the damping diaphragm includes a diaphragm shell and a damping metal sheet, wherein the diaphragm shell is coated with adhesive and disposed on the damping metal sheet.

[0009] Preferably, the membrane shell comprises a rubber shell.

[0010] Preferably, the membrane shell includes an adhesive-coated portion and an annular portion, the shape of the adhesive-coated portion being adapted to the shape of the shock-absorbing metal sheet, and the inner edge of the annular portion being integrally formed and connected to the adhesive-coated portion.

[0011] Preferably, the cross-sectional shape of the annular portion is arched and has a groove, and the grooves of the annular portions of the two damping membranes are arranged opposite to each other.

[0012] Preferably, the preset distance 'a' between the two damping membranes is 16.5 ≤ a ≤ 17 mm.

[0013] Preferably, the two damping membranes have the same surface area, and the surface area S of the two damping membranes is: 1600≤S≤1750mm. 2 .

[0014] The second objective of this invention is to provide a speaker device that improves upon the shortcomings of existing projector vibration damping structures, which have unsatisfactory vibration damping effects, thereby enhancing the sound output and vibration damping performance of the speaker device.

[0015] To achieve this objective, the present invention adopts the following technical solution:

[0016] A speaker enclosure includes a cabinet, a support plate, and the aforementioned speaker damping structure. The side plates of the cabinet and the support plate are spaced apart. The side plates of the cabinet and the support plate are together fixedly connected to the speaker body of the speaker damping structure. One of the damping membranes of the speaker damping structure is provided on the cabinet, and the other damping membrane of the damping structure is provided on the support plate.

[0017] Preferably, the speaker enclosure includes two speaker damping structures, which are symmetrically arranged about the axis of the side plate of the enclosure.

[0018] The third objective of this invention is to provide a projector that can improve the sound effect during use, reduce noise and the phenomenon of shaking and swaying of the projected image, and improve the user experience.

[0019] To achieve this objective, the present invention adopts the following technical solution:

[0020] Projector, including the aforementioned speaker unit.

[0021] The beneficial effects of this utility model are:

[0022] This application provides a speaker damping structure, including a speaker body and a damping component. The damping component includes two symmetrically arranged damping diaphragms, with the area between the two diaphragms aligned with the voice coil disposed on the speaker body, so that the sound waves generated after the voice coil vibrates can be absorbed by the two symmetrically arranged damping diaphragms. Through this arrangement, when the voice coil vibrates, the sound waves emitted by the vibration can be transmitted to the two damping diaphragms via two separate paths. The two damping diaphragms can simultaneously absorb the sound waves, thereby reducing the impact of the sound waves on the enclosure and support plate. This reduces the vibration of the enclosure and support plate, further improving the damping effect of the speaker damping structure, enhancing the sound production and damping performance of the speaker device, and improving the user experience of the projector.

[0023] This application also provides a speaker device. Since the speaker device includes the speaker damping structure described above, the speaker device can generate smaller vibrations during use, reduce noise, improve the purity of sound output, and ensure higher sound quality.

[0024] This application embodiment also provides a projector that includes the speaker device described above. By setting the speaker device, the projector can improve the sound effect during use and reduce noise. Moreover, due to the speaker damping structure, the phenomenon of shaking and swaying of the projected image during use can be further reduced, thereby improving the user experience. Attached Figure Description

[0025] Figure 1 This is an assembly diagram of the speaker vibration damping structure provided by this utility model on a speaker enclosure;

[0026] Figure 2 This is a side view of the speaker damping structure provided by this utility model assembled on a speaker enclosure;

[0027] Figure 3 It is along Figure 2 Sectional view at point AA;

[0028] Figure 4 This is an exploded view of the speaker device provided by this utility model;

[0029] Figure 5 This is a structural schematic diagram of the shock-absorbing component provided by this utility model.

[0030] In the picture:

[0031] 100. Speaker assembly;

[0032] 10. Speaker damping structure; 20. Enclosure; 21. Cavity; 22. Connecting column; 30. Support plate; 40. Elastic sealing ring;

[0033] 1. Speaker body; 11. Front shell of the sound chamber; 12. Voice coil; 13. Dust cover;

[0034] 2. Shock-absorbing component; 21. Shock-absorbing membrane; 211. Membrane shell; 2111. Coated part; 2112. Annular part. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0036] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] The speaker damping structure 10, speaker enclosure 100, and projector provided by this utility model will be described below with reference to the accompanying drawings and specific embodiments.

[0040] This application provides a speaker damping structure 10. See also... Figure 1 This figure is an assembly diagram of the speaker damping structure 10 provided in the embodiment of this application on the speaker enclosure 100. Taking the use of the speaker damping structure 10 on the speaker enclosure 100 as an example, the speaker damping structure 10 will be described in detail.

[0041] See Figure 3 This figure is a cross-sectional view of the speaker device 100 provided in an embodiment of this application. Figure 3As shown, the speaker damping structure 10 specifically includes a speaker body 1 and a damping component 2. The speaker body 1 mainly includes a front shell 11, a voice coil 12, and a dust cover 13. The front shell 11 is fixedly installed inside the speaker enclosure 100, and a ring-shaped voice coil 12 is fixedly installed on the outer side of the front shell 11. The inner edge of the voice coil 12 is connected to the dust cover 13. The dust cover 13 can isolate the internal environment of the speaker enclosure 100 from the external environment, thereby preventing external impurities from entering the speaker body 1 and affecting the sound quality of the speaker enclosure 100. The damping component 2 includes two symmetrically arranged damping diaphragms 21. The two damping diaphragms 21 are spaced apart by a preset distance a, and the area between the two damping diaphragms 21 can be aligned with the voice coil 12 installed on the speaker body 1, so that the sound waves generated after the voice coil 12 vibrates can be absorbed by the two symmetrically arranged damping diaphragms 21 respectively.

[0042] The speaker device 100 provided in this embodiment of the application also includes a housing 20 and a support plate 30, see [link]. Figure 3 , Figure 4 The enclosure 20 has a U-shaped structure and a cavity 201 for housing the support plate 30 and the speaker damping structure 10. The support plate 30 and the side plates of the enclosure 20 are spaced apart. In one embodiment, a plurality of connecting columns 22 protrude from the side plate of the enclosure 20 facing the support plate 30. The ends of the connecting columns 22 are fixedly connected to the support plate 30. The fixing method is not limited in this embodiment, thereby achieving a fixed connection between the support plate 30 and the enclosure 20. The support plate 30 is provided with an assembly groove for fixing the front shell 11 of the sound cavity. One end of the front shell 11 of the sound cavity is inserted into the assembly groove, and the other end of the front shell 11 of the sound cavity is fixedly provided with a voice coil 12. The voice coil 12 passes through the opening of the side plate so that the voice coil 12 can be exposed to the external environment to ensure effective sound diffusion.

[0043] In addition, one of the damping diaphragms 21 from the damping assembly 2 is installed on the enclosure 20 near the voice coil 12, and the other damping diaphragm 21 from the damping assembly 2 is installed at a corresponding position on the support plate 30. This allows the two damping diaphragms 21 to be spaced apart by a preset distance 'a', which is determined by the distance between the side plate of the enclosure 20 and the support plate 30. Through this arrangement, the area between the two damping diaphragms 21 is connected to the voice coil 12 of the speaker body 1. When the voice coil 12 vibrates, the sound waves emitted by the vibration of the voice coil 12 can travel along... Figure 3 The two paths, X and Y, are transmitted to the two damping diaphragms 21 respectively. The two damping diaphragms 21 can absorb the sound wave at the same time, thereby reducing the impact of the sound wave on the enclosure 20 and the support plate 30. This allows the enclosure 20 and the support plate 30 to reduce vibration, thereby further improving the damping effect of the speaker damping structure 10.

[0044] Optionally, the damping diaphragm 21 provided in this embodiment includes a diaphragm shell 211 and a damping metal sheet (not shown in the figure). The diaphragm shell 211 is coated with adhesive and disposed on the outside of the damping metal sheet. The outer edge of the diaphragm shell 211 can be fixedly connected to the enclosure 20 or the support plate 30 by means of adhesive, snap-fit ​​connection, threaded connection, etc., so as to realize the fixed installation of the damping diaphragm 21 on the enclosure 20 or the support plate 30. Moreover, since the damping metal sheet is disposed inside the diaphragm shell 211, based on the characteristics of the damping metal sheet having high density, heavy weight and high structural strength, the damping metal sheet has a small elastic change amplitude after being pushed by sound waves, which helps to reduce the distortion of the speaker damping structure 10. This improves the bass effect of the speaker enclosure device 100 using the speaker damping structure 10, making the bass effect powerful and long-lasting, and consistent.

[0045] Preferably, in one embodiment of this application, the membrane shell 211 is a rubber shell, which can be made of high-grade NBR special raw materials, giving the membrane shell 211 the advantage of strong reducibility, thereby improving the durability of the membrane shell 211.

[0046] See Figure 5 This figure is a schematic diagram of the structure of the damping diaphragm 21 provided in an embodiment of this application. Specifically, the diaphragm shell 211 provided in this embodiment includes an adhesive-coated portion 2111 and an annular portion 2112. The shape of the adhesive-coated portion 2111 is adapted to the shape of the damping metal sheet, which is preferably a circular iron sheet. Correspondingly, the cross-sectional shape of the adhesive-coated portion 2111 is also circular. The inner edge of the annular portion 2112 is integrally formed and connected to the adhesive-coated portion 2111, while the outer edge of the annular portion 2112 is fixedly connected to the support plate 30 or the side plate of the shell 20. Through the above arrangement, the damping metal sheet can better contact the adhesive-coated portion 2111, thereby forming an effective damping effect. At the same time, it reduces the structural complexity and processing cost of the diaphragm shell 211, resulting in a reasonable structural design and reliable use.

[0047] More preferably, the annular portion 2112 provided in this embodiment has an arched cross-sectional shape with a groove. The grooves of the annular portions 2112 of the two damping diaphragms 21 are arranged opposite to each other, thereby effectively improving the compressive strength of the annular portion 2112. When subjected to sound waves transmitted from the voice coil 12, the arched design helps to disperse and conduct the driving force provided by the sound waves, enabling the damping diaphragm 21 to absorb vibration energy more effectively and reduce deformation. The annular portion 2112 provided in this embodiment, due to its arched structure with a groove, has a stronger absorption effect on sound waves and a stronger resistance to deformation than the "racetrack-shaped" annular portion 2112. This avoids the risk of the damping diaphragm 21 becoming misaligned due to excessive vibration amplitude, and improves the installation stability and reliability of the damping diaphragm 21.

[0048] Optionally, a preset distance 'a' is set between the two damping membranes 21, where 'a' satisfies: 16.5 ≤ a ≤ 17 mm. For example, the preset distance 'a' between the two damping membranes 21 can be 16.5 mm, 16.6 mm, 16.7 mm, 16.8 mm, 16.9 mm, or 17 mm. Preferably, the preset distance 'a' between the two damping membranes 21 is 16.9 mm, thereby achieving the optimal damping effect.

[0049] Optionally, the two damping diaphragms 21 have the same surface area to ensure that they have equal contact areas in their structure. This allows the rubber coating 2111 of the two damping diaphragms 21 to evenly distribute the driving force provided by the sound waves. This effectively avoids one damping diaphragm 21 bearing excessive vibration and thus reducing its service life, thereby helping to improve the stability of the entire speaker damping structure 10. Furthermore, the surface area S of the two damping diaphragms 21 is set to: 1600 ≤ S ≤ 1750 mm². 2 For example, the surface area S of the two damping membranes 21 can be 1600 mm². 2 1610mm 2 1620mm 2 1630mm 2 1640mm 2 1650mm 2 1660mm 2 1670mm 2 1680mm 2 1690mm 2 1700mm 2 1710mm 2 1720mm 2 1730mm 2 1740mm 2 Or 1750mm 2 Preferably, in this embodiment, the surface area S of the two damping membranes 21 is 1661 mm². 2 To meet the vibration reduction requirements under actual working conditions.

[0050] Furthermore, since the speaker device 100 provided in this application embodiment includes the speaker damping structure 10 described above, the speaker device 100 can generate smaller vibrations during use, reducing noise, improving the purity of sound output, and ensuring higher quality sound quality.

[0051] Furthermore, in this embodiment, the speaker device 100 includes two speaker damping structures 10, which are symmetrically arranged around the axis of the side plate. By setting two speaker damping structures 10, the clarity of the high frequencies and the purity of the low frequencies of the speaker device 100 can be further improved, the damping effect is more obvious, and the distortion is less, thereby further enhancing the user's experience.

[0052] Optionally, the speaker enclosure 100 provided in this embodiment further includes an elastic sealing ring 40. The elastic sealing ring 40 is sandwiched between the damping diaphragm 21 and the enclosure 20, and between the voice coil 12 and the enclosure 20, to improve the sealing performance between the damping diaphragm 21, the voice coil 12, and the enclosure 20, further preventing external impurities from entering the speaker enclosure 100 and causing abnormal increases in the operating temperature of the speaker enclosure 100 and unstable sound quality. At the same time, it can also play a certain role in shock absorption and buffering, reducing the impact of the speaker body 1 and the damping assembly 2 on the enclosure 20. Preferably, the elastic sealing ring 40 is made of rubber.

[0053] This application embodiment also provides a projector, which includes the speaker device 100 described above. By setting the speaker device 100, the projector can improve the sound effect during use and reduce noise. Moreover, due to the speaker damping structure 10, the phenomenon of shaking and swaying of the projected image during use can be further reduced, thereby improving the user's user experience.

[0054] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A horn vibration damping structure, characterized in that, The device includes a speaker body (1) and a damping assembly (2). The damping assembly (2) is provided on one side of the speaker body (1). The damping assembly (2) includes two symmetrically arranged damping diaphragms (21). The two damping diaphragms (21) are spaced apart by a preset distance a. The area between the two damping diaphragms (21) is aligned with the voice coil (12) of the speaker body (1) so that the sound waves generated after the voice coil (12) vibrates can be absorbed by the two symmetrically arranged damping diaphragms (21).

2. The horn vibration damping structure according to claim 1, characterized in that, The damping diaphragm (21) includes a diaphragm shell (211) and a damping metal sheet, wherein the diaphragm shell (211) is coated with adhesive and disposed on the damping metal sheet.

3. The horn vibration damping structure according to claim 2, characterized in that, The membrane shell (211) includes a rubber shell.

4. The horn vibration damping structure according to claim 2, characterized in that, The membrane shell (211) includes an adhesive-coated portion (2111) and an annular portion (2112). The shape of the adhesive-coated portion (2111) is adapted to the shape of the shock-absorbing metal sheet. The inner edge of the annular portion (2112) is integrally formed and connected to the adhesive-coated portion (2111).

5. The horn vibration damping structure according to claim 4, characterized in that, The cross-sectional shape of the annular portion (2112) is arched and has a slot, and the slots of the annular portions (2112) of the two damping membranes (21) are arranged opposite to each other.

6. The horn vibration damping structure according to claim 1, characterized in that, The preset distance a between the two damping membranes (21) is: 16.5≤a≤17mm.

7. The horn vibration damping structure according to claim 1, characterized in that, The two damping membranes (21) have the same surface area, and the surface area S of the two damping membranes (21) is: 1600≤S≤1750mm 2 .

8. A speaker device, characterized in that, The device includes a housing (20), a support plate (30), and a speaker damping structure (10) according to any one of claims 1-7. The side plates of the housing (20) and the support plate (30) are spaced apart. The side plates of the housing (20) and the support plate (30) are fixedly connected to the speaker body (1) of the speaker damping structure (10). One of the damping membranes (21) of the damping component (2) of the speaker damping structure (10) is provided on the housing (20), and the other damping membrane (21) of the damping component (2) is provided on the support plate (30).

9. The speaker device according to claim 8, characterized in that, The speaker enclosure (100) includes two speaker damping structures (10), which are symmetrically arranged about the axis of the side plate of the enclosure (20).

10. A projector, characterized in that, The speaker device (100) includes any one of claims 8 or 9.

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