Front panel of sound box

Abstract

The utility model provides a sound box front panel, which comprises a panel body detachably installed at an opening part at the front side of a sound box, the back surface of the panel body is convexly provided with an annular support plate used for connecting a woofer, and when the outer edge of the front end of the woofer is assembled and connected to the outer end surface of the annular support plate, the annular support plate is connected with the front end surface of the woofer. A sound cavity is formed between the front side wall of a cone of the woofer and the rear side wall of the panel body, and the panel body is provided with a sound guide channel communicated with the sound cavity. The sound box front panel disclosed by the utility model is arranged at the front side of the sound box shell and is used for fixing the loudspeaker, so that the sound transmission distance can be increased, and the sound effect quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of speaker connection, in particular to a speaker front panel. Background Art

[0002] A speaker is a device that converts electrical signals into sound signals, and the authenticity of the sound generated is a key criterion for evaluating speaker performance. Active speakers are audio systems equipped with a power amplifier (or PA). This integrated amplifier and speaker system can be directly paired with common audio sources (such as portable players, CD players, DVD players, and VCRs) to create a complete audio system.

[0003] Existing speaker enclosures typically consist of a front-opening enclosure with a speaker mounted within a wall cavity, the speaker's horn facing outward. A mesh grille is attached to the front open end of the enclosure to cover the speaker. This speaker structure leaves the diaphragm exposed, directly vibrating the air. This results in insufficient sound pressure, limiting the sound transmission distance and unstable sound quality. Utility Model Content

[0004] In order to overcome at least one of the above defects in the prior art, the present invention provides a speaker front panel, which is installed on the front side of the speaker housing and is used to fix the speaker, thereby improving the sound propagation distance and sound quality.

[0005] The utility model provides a front panel of a sound box, comprising a panel body that can be detachably mounted on an opening on the front side of the sound box, wherein an annular support plate for connecting a woofer is provided on the back side of the panel body in a protruding manner, and when the front outer edge of the woofer is fitted and connected to the outer end surface of the annular support plate, a sound cavity is formed between the front side wall of the paper cone of the woofer and the rear side wall of the panel body, and a sound guide channel connected to the sound cavity is provided on the panel body.

[0006] Compared with the prior art, the speaker front panel of the present invention has the following advantages:

[0007] The speaker panel of the present invention is a structure between the mesh cover and the box body, and with this panel body, the woofer is no longer fixed to the box body but is directly installed on the panel body, and after the speaker is installed on the front panel, a sound cavity is formed between the front side wall of the speaker's horn-shaped paper cone and the rear side wall of the panel body, and a corresponding sound guide channel is opened on the panel body, so that when the speaker is working, the diaphragm pushes the air in the sound cavity to move, generating compression, thereby bringing stronger sound pressure, and the sound is then transmitted through the sound guide hole, which can effectively improve the sound propagation distance.

[0008] Preferably, the back surface of the upper and lower ends of the panel body is respectively formed with a first annular support plate for connecting a first woofer and a second annular support plate for connecting a second woofer, the front side wall of the cone of the first woofer and the second woofer and the back side wall of the panel body form a first sound cavity and a second sound cavity respectively, and the panel body is provided with a first sound guide channel and a second sound guide channel respectively communicating with the first sound cavity and the second sound cavity.

[0009] Further, the first sound guide channel includes two first elongated through holes located on the left and right sides of the first sound cavity and two groups of second through holes located on the upper and lower sides of the first sound cavity, each group of the second through holes includes a plurality of vertical rhombic through holes arranged in the horizontal direction, and the panel body is further provided with a plurality of horizontal rhombic through holes arranged in the vertical direction on the inner side of the two first elongated through holes. In this structure, the sound guide hole structure with different opening sizes and different shapes is arranged to further optimize the frequency band and the near-far of audio transmission and improve the overall sound performance of the sound box.

[0010] Still further, a tweeter is connected to the back side wall of the panel body at a position corresponding to the center of the first woofer at the upper end of the panel body, the panel body is recessed backward at a position corresponding to the tweeter to form a tweeter horn, and a through hole is formed in the center of the tweeter horn. In this structure, a tweeter coaxial with the first woofer is arranged between the first woofer and the panel body to increase the sound effect, and due to the arrangement of the sound guide holes with different sizes and shapes, the bass energy of the woofer is mainly emitted from the sound guide hole position, avoiding the middle high sound part, so that the sound interference between the woofer and the tweeter can be effectively reduced, and better bass and treble effects can be ensured.

[0011] Still further, the second sound guide channel includes two groups of second through holes symmetrically arranged on the left and right sides of the central axis of the second woofer, and each group of the second through holes includes three second elongated through holes arranged in the vertical direction.

[0012] Still further, the front side wall of the panel body is recessed inward at positions corresponding to the first woofer and the second woofer to form mounting grooves for fitting the mesh cover. In this structure, the mesh cover at the front end of the panel body is fitted through the corresponding mounting grooves, ensuring that the outer surface of the mesh cover is flush with the front side wall of the panel after installation, and improving the appearance.

[0013] Still further, the panel body is provided with honeycomb holes on the left and right sides of the intermediate position between the first woofer and the second woofer. The honeycomb holes in this structure are reverse phase holes for communicating the inner cavity of the box body with the external environment, and the air flow inside and outside the box body is used to enhance the low frequency response.

[0014] Other improved features and advantages of the present invention will be described in the following detailed description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be achieved and obtained by the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural diagram of a speaker installed on the front panel of the speaker box of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram from another angle of the speaker installed on the front panel of the speaker of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the panel body in the present utility model.

[0018] Description of reference numerals:

[0019] 1. Panel body; 2. First annular support plate; 3. Second annular support plate; 4. First woofer; 5. Second woofer; 6. First sound cavity; 7. Second sound cavity; 8. First elongated through hole; 9. Vertical diamond-shaped through hole; 10. Horizontal diamond-shaped through hole; 11. Tweeter horn; 12. Second elongated through hole; 13. Mounting slot; 14. Honeycomb hole; 15. Connecting column; 16. Reinforcement rib; 17. Mounting frame. DETAILED DESCRIPTION

[0020] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0022] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature at the "upper end" or "lower end" of the second feature may be in direct contact with the first and second features, or the first and second features may be in indirect contact through an intermediate medium.

[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] See also Figures 1 to 3 As shown, an embodiment of the present application discloses a front panel of a speaker, including a panel body 1 that can be detachably installed on the front opening of the speaker, and a plurality of connecting columns 15 distributed along the circumferential direction are provided on the rear side wall of the panel body 1, where the connecting columns 15 are used to connect and fix with the speaker box.

[0025] In addition, an annular support plate for connecting to a speaker is provided on the back of the panel body 1. When the front outer edge of the speaker is connected to the outer end surface of the annular support plate, a sound cavity can be formed between the front side wall of the speaker cone and the rear side wall of the panel body 1. A sound guide channel connected to the sound cavity is provided on the panel body 1. In such a structure, when the speaker is working, the diaphragm does not directly push the external air to vibrate, but pushes the air in the sound cavity to move. The air in the sound cavity is compressed, which will bring about a stronger sound pressure. The sound is then transmitted through the sound guide hole. At the same time, under the action of the sound pressure, the sound propagation distance and sound quality can be effectively improved.

[0026] In this embodiment, preferably, see the attached Figure 3 A first annular support plate 2 for connecting to a first woofer 4 and a second annular support plate 3 for connecting to a second woofer 5 are formed on the back surfaces of the upper and lower ends of the panel body 1, respectively. A first sound cavity 6 and a second sound cavity 7 are formed between the front sidewalls of the cones of the first and second woofers 4, 5 and the rear sidewall of the panel body, respectively. The panel body 1 is provided with a first sound guide channel and a second sound guide channel, respectively communicating with the first sound cavity 6 and the second sound cavity 7. In this structure, multiple reinforcing ribs 16 extending along the axial direction are formed on the inner and outer walls of the first and second annular support plates 2, 3.

[0027] For more details, please refer to the attached Figure 1 The first sound guide channel in this embodiment includes two first elongated through-holes 8 located on the left and right sides of the first sound cavity 6, and two sets of second through-holes located on the upper and lower sides of the first sound cavity 6. Each set of second through-holes includes multiple horizontally arranged vertical diamond-shaped through-holes 9. The panel body 1 is also provided with multiple vertically arranged horizontal diamond-shaped through-holes 10 located inside the two first elongated through-holes 8. This structure, through the arrangement of sound guide holes of varying opening sizes and shapes, further optimizes the frequency range and distance of audio transmission, enhancing the overall sound performance of the speaker.

[0028] On the other hand, in actual use, tweeters and woofers are usually used in combination. In the above structure, a tweeter (not shown in the figure) is connected to the rear side wall at the middle of the upper end of the panel body 1 and the position corresponding to the center of the first woofer 4, that is, the tweeter and the woofer are concentrically arranged to ensure better high and low frequency effects; for details, see the attached Figure 3A rectangular mounting frame 17 is formed on the rear side wall of the panel body 1, and connection holes are provided at the four corners of the mounting frame 17. The outer edge of the tweeter frame and the outer edge near the speaker mouth are connected to the four connection holes by screws.

[0029] The panel body 1 is recessed at the position corresponding to the tweeter to form a tweeter horn 11, with a through hole at its center. This structure, with its various sound guide holes of varying sizes and shapes, allows the woofer's bass energy to be emitted primarily from these holes, avoiding the treble portion of the midrange. This effectively minimizes sound interference between the woofer and tweeter, ensuring better bass and treble effects.

[0030] In addition, see the attached Figure 1 The second sound guide channel at the lower end of the panel body 1 includes two groups of second through holes symmetrically arranged along the central axis of the second woofer 5. Each group of second through holes includes three vertically arranged second elongated through holes 12. In this structure, since there is no tweeter arranged concentrically with the second woofer 5, only a plurality of second elongated through holes 12 with larger areas are required.

[0031] In this embodiment, mounting grooves 13 for mounting mesh covers are respectively formed inwardly at positions corresponding to the first woofer 4 and the second woofer 5 on the front side wall of the panel body 1, and the depth of the mounting grooves 13 matches the thickness of the mesh cover. That is, when the mesh cover is installed, the flatness of its outer surface and the front side wall of the panel body 1 can be ensured, thereby improving the aesthetics of the entire front panel structure.

[0032] In addition, the speaker in this embodiment is a bass reflex speaker. The design of the bass reflex speaker is to open a bass reflex hole on the box body and utilize the air flow inside and outside the box body to enhance the low-frequency response. When the speaker is working, the sound waves behind it radiate to the front after passing through the bass reflex hole, and are superimposed with the sound waves in front, and radiate forward together, thereby enhancing the low-frequency effect. This design utilizes the Helmholtz resonance principle and tunes to a specific low-frequency resonance frequency through the volume of the box body and the length of the bass reflex tube. Due to the limitations of the structure of the panel body 1, in this structure, an inner cavity is provided on the left and right sides of the panel body 1 between the first woofer 4 and the second woofer 5, and a honeycomb hole 14 is provided at the bottom of the two inner cavities. The inner cavity of the box body is connected to the external environment through the honeycomb hole 14. When in use, the honeycomb-shaped bass reflex hole can better realize the internal and external air flow, and the air flow is uniform, thereby enhancing the low-frequency response.

[0033] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "upper" and "lower" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0034] In the description of this application, the description with reference to the terms "this embodiment", "some embodiments", etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are mutually inconsistent.

[0035] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A front panel of a speaker, characterized by: The invention comprises a panel body (1) which is detachably mounted on the front opening of a sound box, wherein the back of the panel body (1) is provided with an annular support plate for connecting a speaker, and when the front outer edge of the speaker is fitted and connected to the outer end surface of the annular support plate, a sound cavity is formed between the front side wall of the paper cone of the speaker and the rear side wall of the panel body (1), and a sound guide channel connected to the sound cavity is provided on the panel body (1).

2. The speaker front panel according to claim 1, characterized in that: The back surfaces of the upper and lower ends of the panel body (1) are respectively formed with a first annular support plate (2) for connecting to a first woofer (4) and a second annular support plate (3) for connecting to a second woofer (5); a first sound cavity (6) and a second sound cavity (7) are respectively formed between the front side walls of the paper cones of the first woofer (4) and the second woofer (5) and the rear side wall of the panel body; and a first sound guide channel and a second sound guide channel are respectively opened on the panel body (1) and are connected to the first sound cavity (6) and the second sound cavity (7).

3. The speaker front panel according to claim 2, characterized in that: The first sound guide channel comprises two first elongated through holes (8) located on the left and right sides of the first sound cavity (6) and two groups of second through holes located on the upper and lower sides of the first sound cavity (6), each group of the second through holes comprising a plurality of vertical diamond-shaped through holes (9) arranged in a horizontal direction; and a plurality of horizontal diamond-shaped through holes (10) arranged in a vertical direction are also respectively provided on the inner side of the two first elongated through holes (8) on the panel body (1).

4. The speaker front panel according to claim 3, characterized in that: A tweeter is connected to the rear side wall of the middle portion of the upper end of the panel body (1) at a position corresponding to the center of the first woofer (4); the panel body (1) and the corresponding positions of the tweeter are recessed backward to form a tweeter horn (11), and a through hole is provided at the center of the tweeter horn (11).

5. The speaker front panel according to claim 2, 3 or 4, characterized in that: The second sound guide channel comprises two groups of second through holes that are symmetrical along the central axis of the second bass speaker (5), and each group of the second through holes comprises three second elongated through holes (12) arranged vertically.

6. The speaker front panel according to claim 2, characterized in that: Positions on the front side wall of the panel body (1) corresponding to the first bass speaker (4) and the second bass speaker (5) are respectively concavely formed with mounting grooves (13) for mounting mesh covers.

7. The speaker front panel according to claim 2 or 6, characterized in that: Honeycomb holes (14) are provided on both left and right sides of the panel body (1) located between the first bass speaker (4) and the second bass speaker (5).

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