Sound post with adjustable directivity

Abstract

The utility model provides a sound post with adjustable directivity, which comprises a shell and a loudspeaker unit, the front wall of the shell is provided with an installation channel for accommodating the front end of the loudspeaker unit, the loudspeaker unit comprises a fixed loudspeaker, a first movable loudspeaker and a second movable loudspeaker which are arranged from top to bottom, the fixed loudspeaker is fixed with the shell, and the second movable loudspeaker is fixed with the shell. The upper end of the first movable horn is hinged to the lower end of the fixed horn, the lower end is hinged to the upper end of the second movable horn, and a movable gap is reserved between the lower end of the second movable horn and the lower end face of the installation channel. An adjusting mechanism is arranged on the side wall of the shell, the operation end of the adjusting mechanism is exposed out of the back plate, and the two driving ends of the adjusting mechanism are connected with the first movable loudspeaker and the second movable loudspeaker respectively and used for driving the first movable loudspeaker and the second movable loudspeaker to rotate in the front-back direction. According to the directivity-adjustable sound post disclosed by the utility model, stable suspension installation of a circumferential array sound box is realized, and the inclination angle of the array sound box can be easily adjusted, so that the directivity-adjustable sound post is suitable for various different scenes.

Description

Technical Field

[0001] This utility model relates to the field of speaker connection technology, and more specifically, to a speaker column with adjustable directivity. Background Technology

[0002] A speaker is a device that converts electrical signals back into sound signals, and the fidelity of the sound reproduction is an important standard for evaluating speaker performance. An active speaker is an audio system with a built-in power amplifier (i.e., amplifier), integrating the power amplifier and the speaker sound-producing system into one unit. It can be directly paired with common audio sources (such as portable music players, CD players, DVD players, VCRs, etc.) to form a complete audio system.

[0003] A sound column is a type of speaker enclosure with a columnar structure, typically consisting of multiple driver units arranged vertically, all pointing in the same direction. Furthermore, the angles of each driver unit are fixed and cannot be adjusted, resulting in a fixed directivity of the sound from each driver unit, limiting its applicability. Current sound column structures typically achieve changes in directivity by altering the overall tilt angle of the sound column. This method usually requires an adjustment bracket, significantly increasing costs and failing to allow for individual adjustment of individual drivers, leading to unsatisfactory adjustment results. Summary of the Invention

[0004] To overcome at least one of the defects in the prior art, this utility model provides a directional adjustable sound column with an adjustable angle of the speaker unit to achieve sound directionality adjustment, and the adjustment mechanism is simple and easy to operate.

[0005] This utility model provides a directional adjustable sound column: it includes a housing, in which a speaker unit is disposed. An installation channel is provided on the front wall of the housing, and the open end of the speaker unit is accommodated in the installation channel. The speaker unit includes a fixed speaker, a first movable speaker, and a second movable speaker arranged from top to bottom. The fixed speaker is fixedly connected to the housing. The upper end of the first movable speaker is hinged to the lower end of the fixed speaker, and the lower end of the first movable speaker is hinged to the upper end of the second movable speaker. A clearance is left between the lower end of the second movable speaker and the lower end face of the installation channel. An adjustment mechanism is provided on the side wall of the housing. The operating end of the adjustment mechanism is exposed on the back plate of the housing. The two driving ends of the adjustment mechanism are respectively connected to the first movable speaker and the second movable speaker to drive the first movable speaker and the second movable speaker to rotate in the front-back direction, thereby achieving sound directionality adjustment.

[0006] Compared with the prior art, the directional adjustable sound column of this utility model has the following advantages:

[0007] In the sound column structure of this utility model, the speaker unit is divided into a fixed speaker part and two movable speaker parts. The first movable speaker can rotate relative to the fixed speaker, and the second movable speaker can also rotate relative to the first movable speaker. A corresponding adjustment mechanism is provided inside the housing. The adjustment mechanism has two drive ends, which are respectively connected to the first movable speaker and the second movable speaker. That is, the adjustment mechanism realizes the independent rotation adjustment of the two movable speakers, and the adjustment of the sound directionality and distance is more comprehensive and accurate. In addition, the operating end of the adjustment mechanism extends out of the back plate of the housing. The movable speakers can be driven to rotate back and forth by manually operating the operating end on the back side of the housing. This structure is not only convenient to operate, but the operating end is located on the rear side wall of the housing, and it has little impact on the overall appearance of the sound column.

[0008] Furthermore, the adjustment mechanism includes a lifting plate and a drive assembly. The lifting plate is vertically slidably connected to the housing. The upper end of the lifting plate, away from the back plate, is provided with a first elongated oblique through hole and a first vertical through hole, with the upper end of the first vertical through hole communicating with the lower end of the first oblique through hole. The lower end of the lifting plate, away from the back plate, is provided with a second elongated oblique through hole. Both the first and second oblique through holes extend downwards and slope from front to back. The outer walls of the first and second movable horns are respectively provided with a first guide rod and a second guide rod. The first guide rod and the second guide rod are slidably engaged in the first oblique through hole and the second oblique through hole, respectively. When the driving assembly drives the lifting plate to move up and down, under the guidance of the first oblique through hole and the second oblique through hole, the first guide rod and the second guide rod respectively drive the movable horn to rotate backward or forward. When the lifting plate moves upward to the point where the first guide rod slides in the first vertical through hole, the first movable horn remains stationary. At the same time, the second guide rod continues to slide in the second oblique through hole to drive the second movable horn to continue to rotate backward.

[0009] As an improvement, the connection between the upper end of the first vertical through hole and the lower end of the first oblique through hole is an arc-shaped surface. In the above improved structure, the arc-shaped surface serves as a transition surface, allowing the first guide rod to smoothly and stably transition from the first oblique through hole to the first vertical through hole during the upward movement of the lifting plate.

[0010] In a further improvement, mounting brackets are provided on the rear side plates of both the first and second movable horns, and fixing plates are provided on the two mounting brackets respectively. One end of the first guide rod and the second guide rod are respectively connected to the two fixing plates, and the other end of the first guide rod and the second guide rod are respectively passed through the first oblique through hole and the second oblique through hole. The end of the first guide rod and the second guide rod that passes through the first oblique through hole and the second oblique through hole is connected to a positioning baffle.

[0011] Furthermore, the drive assembly includes a drive gear and a rotating shaft. The rotating shaft is rotatably mounted on the back plate along its axis. The drive gear is connected to the inner end of the rotating shaft, and a manual knob is connected to the outer end of the rotating shaft. A rack extending vertically is provided on the side wall of the lifting plate, and the rack meshes with the drive gear. In the above structure, the lifting plate's movement adjustment is achieved through the gear and rack structure, resulting in smooth and reliable driving.

[0012] In a further improvement, the lifting plate includes a first connecting plate and a second connecting plate arranged at right angles. The first connecting plate is parallel to the back plate, and the rack is formed on the side wall of the first connecting plate away from the second connecting plate. The second connecting plate extends towards the movable horn, and the first vertical through hole and two oblique through holes are all formed on the second connecting plate. In the above improved structure, the lifting plate includes two right-angled connecting plates, which facilitates sliding connection with the back of the housing and enables guiding linkage with the movable horn, simplifying the drive structure.

[0013] In a further improvement, the first connecting plate has a second vertically extending through hole. Two positioning bolts connected to the back plate are movably inserted through the second vertical through hole, and the inner walls of the bolt heads of the two positioning bolts slide against the outer wall of the first connecting plate. A positioning assembly is provided between the first connecting plate and the inner wall of the back plate. In the above improved structure, the sliding connection between the first connecting plate and the back plate is simple, and the positioning assembly can limit the corresponding height position, thereby ensuring the stability of the movable horn after it is adjusted to a set angle.

[0014] Furthermore, the positioning component includes at least one ball screw, which passes through the back plate. The first connecting plate is provided with a plurality of positioning holes evenly distributed vertically. The ball of the ball screw abuts against the side of the first connecting plate near the back plate and can be positioned at any of the positioning holes.

[0015] Other improvements and advantages of this invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures particularly pointed out in the description and drawings. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the directional adjustable sound column of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the directional adjustable sound column of this utility model from another angle;

[0018] Figure 3 This is a schematic diagram of the connection structure between the two movable horns, the adjustment mechanism, and the housing in this utility model.

[0019] Figure 4 This is another schematic diagram of the connection structure between the two movable horns, the adjustment mechanism, and the housing in this utility model.

[0020] Figure 5 This is a schematic diagram of the connection structure between the adjustment mechanism and the two movable horns in this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Housing; 2. Mounting channel; 3. Fixed horn; 4. First movable horn; 5. Second movable horn; 6. Back plate; 7. First oblique through hole; 8. First vertical through hole; 9. Second oblique through hole; 10. First guide rod; 11. Second guide rod; 12. Mounting bracket; 13. Fixing plate; 14. Drive gear; 15. Manual knob; 16. Rack; 17. First connecting plate; 18. Second connecting plate; 19. Second vertical through hole; 20. Positioning bolt; 21. Ball screw; 22. Positioning round hole. Detailed Implementation

[0023] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In the embodiments of this application, unless otherwise expressly 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 feature, or indirect contact between the first and second features through an intermediate medium.

[0026] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] See Figures 1-5 As shown in the figure, this application discloses a directional adjustable sound column, including a housing 1. Preferably, the housing 1 is a square column structure. A speaker unit is disposed inside the housing 1. An installation channel 2 is provided on the front wall of the housing 1, and the open end of the speaker unit is accommodated in the installation channel 2.

[0028] In this embodiment, the speaker unit includes a fixed speaker 3, a first movable speaker 4, and a second movable speaker 5 arranged from top to bottom. The fixed speaker 3 is fixedly connected to the housing 1. The upper end of the first movable speaker 4 is hinged to the lower end of the fixed speaker 3, and the lower end of the first movable speaker 4 is hinged to the upper end of the second movable speaker 5. A gap is left between the lower end of the second movable speaker 5 and the lower end face of the mounting channel 2. An adjustment mechanism is provided on the side wall of the housing 1. The operating end of the adjustment mechanism is exposed on the back plate 6 of the housing 1. The two driving ends of the adjustment mechanism are respectively connected to the first movable speaker 4 and the second movable speaker 5 to drive the first movable speaker 4 and the second movable speaker 5 to rotate in the front-back direction to achieve sound directionality adjustment.

[0029] It should be emphasized that in the above structure, the first movable horn 4, the second movable horn 5, and the fixed horn 3 can be a single horn body, or a component structure consisting of two or more horn bodies connected together. In this embodiment, preferably, the horn unit includes three horn bodies, wherein the uppermost horn body is the fixed horn 3, the middle horn body is the first movable horn 4, and the lowermost horn body is the second movable horn 5. The adjustment mechanism allows for the individual rotation and adjustment of the first movable horn 4 and the second movable horn 5, meaning that a single operation can adjust the two movable horns to different tilt angles, making the sound directionality adjustment of the sound column more comprehensive and precise, and making the applicable scenarios more diversified.

[0030] In this embodiment, the adjustment mechanism includes a lifting plate and a drive assembly. The lifting plate is vertically slidably connected to the inner wall of the housing 1, preferably to the back plate 6 of the housing 1. The upper end of the lifting plate on the side away from the back plate 6 is provided with a long, narrow first oblique through hole 7 and a vertically arranged first vertical through hole 8, with the upper end of the first vertical through hole 8 communicating with the lower end of the first oblique through hole 7. The lower end of the lifting plate on the side away from the back plate 6 is provided with a long, narrow second oblique through hole 9. Both the first oblique through hole 7 and the second oblique through hole 9 extend from top to bottom and are inclined from front to back. The outer walls of the first movable horn 4 and the second movable horn 5 are respectively provided with a first guide rod 10 and a second guide rod 11, which slide... The first and second inclined through holes 7 and 9 are engaged in a kinetic arrangement. When the drive assembly drives the lifting plate to move upward, the first guide rod 10 and the second guide rod 11, guided by the first and second inclined through holes 7 and 9, respectively drive the movable horn to rotate backward. When the lifting plate moves upward to the point where the first guide rod 10 slides in the first vertical through hole 8, the first movable horn 4 remains stationary. At the same time, the second guide rod 11 continues to slide in the second inclined through hole 9 to drive the second movable horn 5 to continue rotating backward, thereby adjusting the first movable horn 4 and the second movable horn 5 to different tilt angles. When the drive assembly drives the lifting plate to move downward to reset, the first movable horn 4 and the second movable horn 5 rotate forward to reset.

[0031] In the above structure, in order to enable the second guide rod 11 to smoothly transition from the second oblique through hole 9 to the first vertical through hole 8, the connection between the upper end of the first vertical through hole 8 and the lower end of the second oblique through hole 9 is an arc-shaped surface.

[0032] In addition, to ensure the stability of the connection drive structure between the lifting plate and the two movable horns, mounting brackets 12 are provided on the rear side plates of the first movable horn 4 and the second movable horn 5, and fixing plates 13 are respectively provided on the two mounting brackets 12. One end of the first guide rod 10 and the second guide rod 11 are respectively connected to the two fixing plates 13, and the other end of the first guide rod 10 and the second guide rod 11 are respectively passed through the first oblique through hole 7 and the second oblique through hole 9. The ends of the first guide rod 10 and the second guide rod 11 that pass through the first oblique through hole 7 and the second oblique through hole 9 are connected to positioning baffles. The positioning baffles are used to prevent the guide rods from disengaging from the corresponding oblique through holes when the lifting plate moves up and down.

[0033] In this embodiment, the drive assembly includes a drive gear 14 and a rotating shaft. The rotating shaft is rotatably mounted on the back plate 6 along its axis. The drive gear 14 is connected to the inner end of the rotating shaft, and a manual knob 15 is connected to the outer end of the rotating shaft. A rack 16 extending vertically is provided on the side wall of the lifting plate, and the rack 16 meshes with the drive gear 14. By rotating the manual knob 15, the drive gear 14 is driven to rotate, thereby driving the rack 16 part together with the lifting plate to move up and down. Finally, the two movable horns are rotated back and forth independently through two guide rods. In this structure, a connecting hole is provided on the back plate 6, and a bearing is installed in the connecting hole. The rotating shaft is installed in the inner hole of the bearing, which facilitates the flexible rotation of the rotating shaft.

[0034] For more details, please see the appendix. Figure 4 The lifting plate in the above structure includes a first connecting plate 17 and a second connecting plate 18 distributed at right angles. The first connecting plate 17 is parallel to the back plate 6. A toothed rack 16 is formed on the side wall of the first connecting plate 17 away from the second connecting plate 18. The second connecting plate 18 extends toward the front side of the housing 1, and the first vertical through hole 8 and the two oblique through holes are all opened on the second connecting plate 18.

[0035] In this embodiment, a second vertical through hole 19 extending vertically is provided on the first connecting plate 17. Two positioning bolts 20 connected to the back plate 6 are movably inserted into the second vertical through hole 19, and the inner walls of the bolt heads of the two positioning bolts 20 slide against the outer wall of the first connecting plate 17. A positioning assembly is provided between the first connecting plate 17 and the inner wall of the back plate 6. This assembly is used to position the first connecting plate 17 after it has been moved, thereby driving the two movable horns to be positioned at the designed angle.

[0036] Preferably, the positioning component includes at least one ball screw 21, which passes through the back plate 6 and is fixedly connected to it. The first connecting plate 17 has multiple vertically evenly arranged positioning holes 22 on its side near the back plate 6. The steel balls of the ball screw 21 abut against the side of the first connecting plate 17 near the back plate 6 and can be positioned at any of the positioning holes 22. In this embodiment, there are two ball screws 21, spaced vertically apart. The steel ball ends of the two ball screws 21 abut against two corresponding positioning holes 22 on the first connecting plate 17, ensuring that the lifting plate can be stably positioned on the rear wall of the housing 1, thus better ensuring that the two movable horns remain stable after angle adjustment. In this structure, the vertically arranged positioning holes 22 and the rack 16 are located on both sides of the vertical through hole, and each positioning hole 22 is a round through hole, which is convenient for processing and can be integrally stamped.

[0037] In the description of the embodiments of this application, it should be noted that the terms "upper" and "lower" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the 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, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0038] In the description of this application, the references to terms such as "this embodiment," "some 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 this application. 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 a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sound post with adjustable directivity, comprising a housing (1) in which a horn unit is arranged, characterized in that: The front wall of the shell (1) is provided with a mounting channel (2), the open end of the loudspeaker unit is accommodated in the mounting channel (2), the loudspeaker unit comprises a fixed loudspeaker (3), a first movable loudspeaker (4) and a second movable loudspeaker (5) arranged from top to bottom, the fixed loudspeaker (3) is fixedly connected with the shell (1), the upper end of the first movable loudspeaker is hingedly connected with the lower end of the fixed loudspeaker (3), the lower end of the first movable loudspeaker (4) is hingedly connected with the upper end of the second movable loudspeaker (5), and an active gap is left between the lower end of the second movable loudspeaker (5) and the lower end surface of the mounting channel (2); an adjusting mechanism is arranged on the side wall of the shell (1), the operating end of the adjusting mechanism is exposed on the back plate (6) of the shell (1), and the two driving ends of the adjusting mechanism are connected with the first movable loudspeaker (4) and the second movable loudspeaker (5) respectively, so as to drive the first movable loudspeaker (4) and the second movable loudspeaker (5) to rotate in the front-rear direction respectively, so as to realize sound directivity adjustment.

2. The adjustable directional sound post of claim 1, wherein: The adjusting mechanism comprises a lifting plate and a driving assembly, the lifting plate is slidably connected on the back plate (6) of the shell (1) in the vertical direction, the upper end of the side, away from the back plate (6), of the lifting plate is provided with a long strip-shaped first inclined through hole (7) and a first vertical through hole (8) arranged in the vertical direction, the upper end of the first vertical through hole (8) is communicated with the lower end of the first inclined through hole (7), the lower end of the side, away from the back plate (6), of the lifting plate is provided with a long strip-shaped second inclined through hole (9), and the first inclined through hole (7) and the second inclined through hole (9) both extend from top to bottom and are inclined from front to back; the outer wall of the first movable loudspeaker (4) and the second movable loudspeaker (5) is respectively provided with a first guide pull rod (10) and a second guide pull rod (11), the first guide pull rod (10) and the second guide pull rod (11) are respectively slidably fitted in the first inclined through hole (7) and the second inclined through hole (9), when the driving assembly drives the lifting plate to move up and down, under the guidance of the first inclined through hole (7) and the second inclined through hole (9), the first guide pull rod (10) and the second guide pull rod (11) drive the movable loudspeaker to rotate backward or forward respectively; and when the lifting plate moves upward to the position that the first guide pull rod (10) slides in the first vertical through hole (8), the first movable loudspeaker (4) remains stationary; at the same time, the second guide pull rod (11) continues to slide in the second inclined through hole (9), so as to drive the second movable loudspeaker (5) to continue to rotate backward.

3. The adjustable directional sound post of claim 2, wherein: The junction of the upper end of the first vertical through hole (8) and the lower end of the first inclined through hole (7) is an arc surface.

4. The adjustable directional sound post of claim 2, wherein: The rear side plate of the first movable horn (4) and the second movable horn (5) is provided with a mounting frame (12), and the two mounting frames (12) are respectively provided with a fixed plate (13), one end of the first guide pull rod (10) and the second guide pull rod (11) is connected to the two fixed plates (13), the other end of the first guide pull rod (10) and the second guide pull rod (11) is respectively arranged in the first inclined through hole (7) and the second inclined through hole (9), and one end of the first guide pull rod (10) and the second guide pull rod (11) passing through the first inclined through hole (7) and the second inclined through hole (9) is connected with a positioning baffle.

5. The adjustable directional sound post of claim 2, wherein: The driving assembly comprises a driving gear (14) and a rotating shaft, the rotating shaft is rotatably arranged on the back plate (6) along its axis, the driving gear (14) is connected to the inner end of the rotating shaft, and the outer end of the rotating shaft is connected with a manual knob (15); the side wall of the lifting plate is provided with a vertical rack (16), and the rack (16) is engaged with the driving gear (14).

6. The adjustable directional sound post of claim 5, wherein: The lifting plate comprises a first connecting plate (17) and a second connecting plate (18) distributed at right angles, the first connecting plate (17) is parallel to the back plate (6), and the side wall of the first connecting plate (17) away from the second connecting plate (18) is formed with the rack (16); the second connecting plate (18) extends towards the front side of the shell (1), and the first vertical through hole (8) and the two inclined through holes are arranged on the second connecting plate (18).

7. The adjustable directional sound post of claim 6, wherein: The first connecting plate (17) is provided with a second vertical through hole (19) extending vertically, two positioning bolts (20) connected to the back plate (6) are movably arranged in the second vertical through hole (19), and the inner wall of the bolt head of the two positioning bolts (20) is in sliding abutment with the outer wall of the first connecting plate (17), and a positioning assembly is arranged between the first connecting plate (17) and the inner wall of the back plate (6).

8. The adjustable directional sound post of claim 7, wherein: The positioning assembly comprises at least one wave bead screw (21), the wave bead screw (21) is arranged on the back plate (6), one side of the first connecting plate (17) close to the back plate (6) is provided with a plurality of positioning circular holes (22) uniformly distributed vertically, the steel ball of the wave bead screw (21) abuts against one side of the first connecting plate (17) close to the back plate (6), and can be positioned at the position of any one of the positioning circular holes (22).

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