High pitch horizontal diffusion angle adjusting device and sound box using same

Abstract

The utility model discloses a high pitch horizontal diffusion angle adjusting device and a sound box using the same, the device comprises a base, a rotating shaft, an adjusting cover plate and a level adjusting mechanism, the level adjusting mechanism comprises a telescopic assembly, a locking assembly and a reset assembly, the inner side surface of the adjusting cover plate is provided with a level adjusting cavity, and the level adjusting cavity comprises a transition part and two gear parts; one side of the adjusting cover plate is rotationally connected with the base through a rotating shaft; the level adjusting driving end of the telescopic assembly is arranged in the adjusting cavity in a limiting mode, and when the adjusting cover plate is pressed downwards, the level adjusting driving end of the telescopic assembly moves in the direction from the gear part to the transition part; the locking assembly is used for pushing the level adjusting driving end of the telescopic assembly to the gear part, so that the level adjusting driving end of the telescopic assembly is locked in the gear part. According to the scheme, the problems that the adjustment process is not rapid enough and the angle plate conversion operation is complex and tedious in the traditional mode that the high pitch external expansion range is adjusted by repeatedly and frequently disassembling and assembling different angle plates are solved.

Description

Technical Field

[0001] This utility model relates to the field of speaker technology, specifically a high-frequency horizontal diffusion angle adjustment device and a speaker using the same. Background Technology

[0002] As a crucial tool for sound propagation, the core function of speaker equipment is to convert sound signals into sound waves and amplify them through loudspeakers, thereby achieving a sound reinforcement effect. In practical applications, the amplification range of speakers often needs to be adjusted according to different scenarios and requirements. To meet diverse amplification needs, an adjustable amplification range speaker device has emerged on the market. This type of speaker device requires operators to repeatedly and frequently disassemble and assemble different angle plates to adjust the high-frequency amplification range. However, this adjustment method is not only cumbersome and time-consuming, but also not fast enough to adapt to rapidly changing scenario requirements. Utility Model Content

[0003] To address the aforementioned shortcomings, this utility model proposes a high-frequency horizontal diffusion angle adjustment device and a speaker using it, aiming to solve the problems of the traditional method of adjusting the high-frequency expansion range by repeatedly and frequently disassembling and assembling different angle plates, which is not fast enough and the angle plate changing operation is complicated and cumbersome.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A high-frequency horizontal diffusion angle adjustment device includes a base, a rotating shaft, an adjustment cover plate, a return spring, and a tuning mechanism. The tuning mechanism includes a fixed plate, a telescopic assembly, a locking assembly, and a return assembly. The telescopic assembly includes a tuning drive end, and the locking assembly includes a first elastic element. The inner side of the adjustment cover plate has a tuning cavity, which includes a transition section and at least two position sections.

[0006] One side of the adjusting cover is rotatably connected to the base via the rotating shaft. The return spring is installed on the rotating shaft. Under the elastic force of the return spring, the adjusting cover tends to rotate in the direction where the angle between the adjusting cover and the base increases. Two gear positions are arranged vertically on one side of the transition portion, and both gear positions are connected to the transition portion. The fixed plate is installed on the base, and the telescopic assembly is movably arranged on the fixed plate. The adjustment drive end of the telescopic assembly is limited to move within the adjusting cavity. When the adjusting cover is pressed down, the adjustment drive end of the telescopic assembly moves from the gear position towards the transition portion. The first elastic element of the locking assembly is connected to the telescopic assembly. The locking assembly is used to push the adjustment drive end of the telescopic assembly towards the gear position, so that the adjustment drive end of the telescopic assembly is locked within the gear position. The reset assembly is arranged on the fixed plate and is used to drive the adjustment drive end of the telescopic assembly closer to or away from the transition portion.

[0007] Preferably, the adjustment mechanism further includes an L-shaped plate and two slide rails. The telescopic component includes two sliders, a connecting block, and a locking block. The L-shaped plate includes a first inner side and a second inner side. The L-shaped plate is fixed to the fixed plate. The two slide rails are respectively fixed to the first inner side and the second inner side. Both slide rails are arranged in the left-right direction. The two sliders are respectively slidably mounted on the corresponding slide rails. The connecting block is mounted on the slider located on the first inner side. The locking block is mounted on the slider located on the second inner side. The right end of the connecting block is fixed to the locking block. The locking block is provided with the adjustment drive end.

[0008] Preferably, the locking assembly further includes a locking pin fixing block and a locking pin, and a locking hole groove is provided on the right side of the locking block; the locking pin fixing block is fixed to the fixing plate, the locking pin fixing block is located on the right side of the L-shaped plate, the locking pin passes through the locking pin fixing block, the first elastic member is sleeved on the locking pin, one end of the first elastic member is connected to the right side of the locking block, and the other end of the first elastic member is connected to the left side of the locking pin fixing block; when the adjustment drive end of the telescopic assembly moves from the gear position to the transition part, the left end of the locking pin can cooperate with the locking hole groove.

[0009] Preferably, the reset assembly includes an L-shaped rod and a second elastic element, and a protrusion is provided on the other side of the adjusting cover plate; the L-shaped rod is rotatably mounted on the fixed plate, the L-shaped rod is located on the left side of the L-shaped plate, one end of the second elastic element is connected to the fixed plate, and the other end of the second elastic element is connected to one end of the L-shaped rod; when the adjusting cover plate is reset under the action of the reset spring, the protrusion is used to trigger the reset assembly to drive the adjustment drive end of the telescopic assembly away from the transition part.

[0010] Preferably, the adjusting cover plate includes a main housing and two side housings. The main housing includes a mounting part, a first arc-shaped shielding part, and a second arc-shaped shielding part. The two side housings are respectively disposed on the left and right sides of the main housing. The mounting part is fixed to one end of the first arc-shaped shielding part, and one end of the second arc-shaped shielding part is fixed to the other end of the first arc-shaped shielding part.

[0011] Preferably, the base includes a first mounting plate and a second mounting plate. The first mounting plate has a plurality of first screw holes, and the second mounting plate has a plurality of second screw holes. The front end of the first mounting plate is connected to the upper end of the second mounting plate. The first mounting plate and the second mounting plate are perpendicular to each other. The plurality of first screw holes are evenly distributed at intervals in the left-right direction, and the plurality of second screw holes are evenly distributed at intervals in the left-right direction.

[0012] Preferably, a limiting strip block is provided at the rear end of the first mounting plate, the limiting strip block being used to limit the rotation range of the adjusting cover plate.

[0013] Another aspect of this application provides a speaker, including at least two of the aforementioned treble horizontal diffusion angle adjustment devices, a housing, and a speaker; the speaker is installed inside the housing, the two aforementioned treble horizontal diffusion angle adjustment devices are symmetrically arranged on the housing, and the two aforementioned treble horizontal diffusion angle adjustment devices are located in front of the speaker.

[0014] The technical solution provided by this utility model can include the following beneficial effects:

[0015] This solution uses different settings to adjust the rotation angle of the adjustment cover, enabling flexible and rapid adjustment of the sound expansion range emitted by the speaker inside the speaker enclosure. This reduces interference caused by sound field reflections and improves the concentration of energy projected onto the designated area. Compared to the traditional method of repeatedly disassembling and assembling different angle plates to adjust the treble expansion range, this solution eliminates the need for repeated disassembly and assembly of different angle plates. The adjustment effect can be achieved simply by adjusting the rotation angle of the adjustment cover, effectively simplifying the operational complexity of adjusting the treble expansion range. Attached Figure Description

[0016] Figure 1 This is an exploded view of the structure of a high-frequency horizontal diffusion angle adjustment device;

[0017] Figure 2 This is a partial enlarged view of one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the main housing of the adjusting cover plate in one embodiment of the present invention;

[0019] Figure 4 This is a partial cross-sectional view of a speaker cabinet that uses a high-frequency horizontal diffusion angle adjustment device.

[0020] The components are as follows: 1. Base; 2. Rotating shaft; 3. Adjusting cover plate; 4. Return spring; 5. Adjustment mechanism; 6. Protrusion; 7. Limiting strip block; 8. Housing; 9. Speaker; 11. First mounting plate; 12. Second mounting plate; 30. Adjustment cavity; 31. Main housing; 32. Side housing; 51. Fixing plate; 52. Telescopic assembly; 53. Locking assembly; 54. Reset assembly; 55. L-shaped plate; 56. Slide rail; 110. First screw hole; 120. Second screw hole. Wire hole; 301, transition part; 302, gear position part; 311, mounting part; 312, first arc-shaped blocking part; 313, second arc-shaped blocking part; 520, adjustment drive end; 521, slider; 522, connecting block; 523, locking block; 531, first elastic element; 532, locking pin fixing block; 533, locking pin; 541, L-shaped rod; 542, second elastic element; 551, first inner surface; 552, second inner surface; 5230, locking hole groove. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] In the description of this utility model, it should be understood that the terms "length", "middle", "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "assembly," and "connection" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0025] A high-frequency horizontal diffusion angle adjustment device includes a base 1, a rotating shaft 2, an adjustment cover 3, a return spring 4, and a tuning mechanism 5. The tuning mechanism 5 includes a fixed plate 51, a telescopic component 52, a locking component 53, and a return component 54. The telescopic component 52 includes a tuning drive end 520, and the locking component 53 includes a first elastic element 531. The inner side of the adjustment cover 3 has a tuning cavity 30, which includes a transition portion 301 and at least two position portions 302. One side of the adjustment cover 3 is rotatably connected to the base 1 via the rotating shaft 2. The return spring 4 is installed on the rotating shaft 2. Under the elastic force of the return spring 4, the adjustment cover 3 tends to rotate in the direction that the angle between the adjustment cover 3 and the base 1 increases. The two position portions 302 are arranged vertically on one side of the transition portion 301. Both 2 are connected to the transition portion 301; the fixing plate 51 is installed on the base 1, the telescopic component 52 is movably disposed on the fixing plate 51, the adjustment drive end 520 of the telescopic component 52 is limited to move within the adjustment cavity 30, when the adjustment cover plate 3 is pressed down, the adjustment drive end 520 of the telescopic component 52 moves from the gear position portion 302 towards the transition portion 301; the first elastic element 531 of the locking component 53 is connected to the telescopic component 52, the locking component 53 is used to push the adjustment drive end 520 of the telescopic component 52 towards the gear position portion 302, so that the adjustment drive end 520 of the telescopic component 52 is locked within the gear position portion 302; the reset component 54 is disposed on the fixing plate 51, the reset component 54 is used to drive the adjustment drive end 520 of the telescopic component 52 to approach or move away from the transition portion 301.

[0026] This solution provides a high-frequency horizontal diffusion angle adjustment device, applied to a speaker cabinet. In this embodiment, as shown... Figure 4 As shown, the speaker enclosure 8 is symmetrically equipped with two of the aforementioned high-frequency horizontal diffusion angle adjustment devices. The user can change the diffusion angle and coverage range of the sound emitted by the speaker 9 inside the speaker enclosure 8 by adjusting the rotation angle of the adjustment cover 3 in the two high-frequency horizontal diffusion angle adjustment devices. In this embodiment, as... Figure 1-3As shown, the adjustment cavity 30 includes two gear positions 302, which are arranged vertically. The return spring 4 is a torsion spring, and the first elastic element 531 is a spring. In the initial state, the adjustment drive end 520 of the telescopic assembly 52 is confined within the lower gear position 302. When it is necessary to adjust to the next gear, that is, to limit the adjustment drive end 520 of the telescopic component 52 to the gear position 302 located above, the user first applies a downward pressure force to the adjustment cover plate 3. The adjustment drive end 520 of the telescopic component 52 will move from the gear position 302 located below towards the transition part 301. At the same time, with the cooperation of the locking component 53, the adjustment drive end 520 of the telescopic component 52 is pushed from the transition part 301 towards the gear position 302 located above, so that the adjustment drive end 520 of the telescopic component 52 is locked in the gear position 302 located above, thereby realizing the adjustment and fixation of the adjustment cover plate 3 at that gear position.

[0027] To further explain, when the adjusting cover 3 needs to be reset to its initial state, the user applies downward pressure to the adjusting cover 3 again. The adjustment drive end 520 of the telescopic component 52 will move from the upper gear position 302 towards the transition part 301. At the same time, the adjusting cover 3 springs open upward under the action of the reset spring 4. During the opening process, the adjusting cover 3 triggers the reset component 54 to drive the adjustment drive end 520 of the telescopic component 52 away from the transition part 301. With the cooperation of the locking component 53, the adjustment drive end 520 of the telescopic component 52 is locked in the lower gear position 302, thereby realizing the adjustment and fixation of the adjusting cover 3 in the initial position.

[0028] In this solution, the rotation angle of the adjustment cover 3 is adjusted in different positions, enabling flexible and rapid adjustment of the sound expansion range emitted by the speaker inside the speaker enclosure. Compared to the traditional method of adjusting the tweeter expansion range by repeatedly disassembling and assembling different angle plates, this solution eliminates the need for repeated disassembly and assembly of different angle plates. The adjustment effect can be achieved simply by adjusting the rotation angle of the adjustment cover 3, effectively simplifying the operational complexity of tweeter expansion range adjustment.

[0029] Preferably, the adjusting mechanism 5 further includes an L-shaped plate 55 and two slide rails 56, the telescopic component 52 includes two sliders 521, a connecting block 522 and a locking block 523, and the L-shaped plate 55 includes a first inner side 551 and a second inner side 552.

[0030] The L-shaped plate 55 is fixed to the fixing plate 51. The two slide rails 56 are respectively fixed to the first inner side 551 and the second inner side 552. Both slide rails 56 are arranged in the left and right direction. The two sliders 521 are respectively slidably installed on the corresponding slide rails 56. The connecting block 522 is installed on the slider 521 located on the first inner side 551. The locking block 523 is installed on the slider 521 located on the second inner side 552. The right end of the connecting block 522 is fixed to the locking block 523. The locking block 523 is provided with the level adjustment drive end 520.

[0031] In this embodiment, as Figure 2-3 As shown, during the adjustment process by pressing down the adjustment cavity 30, the inner wall of the gear position 302 applies a rightward force to the adjustment drive end 520 on the locking block 523, thereby causing the locking block 523 to move to the right, thus moving the adjustment drive end 520 from the gear position 302 towards the transition section 301. Simultaneously, the rightward movement of the locking block 523 also causes the locking block 523 to move to the right. Furthermore, the arrangement of the two slide rails 56 and the two sliders 521 makes the sliding of the locking block 523 and the connecting block 522 more stable.

[0032] Preferably, the locking component 53 further includes a locking pin fixing block 532 and a locking pin 533, and the right side of the locking block 523 is provided with a locking hole groove 5230;

[0033] The locking pin fixing block 532 is fixed to the fixing plate 51. The locking pin fixing block 532 is located on the right side of the L-shaped plate 55. The locking pin 533 passes through the locking pin fixing block 532. The first elastic member 531 is sleeved on the locking pin 533. One end of the first elastic member 531 is connected to the right side of the card block 523, and the other end of the first elastic member 531 is connected to the left side of the locking pin fixing block 532.

[0034] When the adjustment drive end 520 of the telescopic component 52 moves from the gear position 302 toward the transition part 301, the left end of the locking pin 533 can cooperate with the locking slot 5230.

[0035] In this embodiment, as Figure 2-3As shown, during the adjustment process of pressing down the adjustment cavity 30, the adjustment drive end 520 on the locking block 523 moves from the current gear position 302 to the right towards the transition part 301. At this time, the left end of the locking pin 533 engages with the locking slot 5230, and the first elastic element 531 is in a compressed state. When the adjustment cavity 30 is adjusted to the same height as the next gear position 301 and the adjustment drive end 520 of the locking block 523, the first elastic element 531, which is in a compressed state, will automatically reset, applying a leftward elastic force to the locking block 523, thereby driving the locking block 523 to move to the left, so that the adjustment drive end 520 on the locking block 523 is locked in the next gear position 301.

[0036] Preferably, the reset assembly 54 includes an L-shaped rod 541 and a second elastic element 542, and a protrusion 6 is provided on the other side of the adjusting cover plate 3;

[0037] The L-shaped rod 541 is rotatably mounted on the fixed plate 51. The L-shaped rod 541 is located on the left side of the L-shaped plate 5. One end of the second elastic member 542 is connected to the fixed plate 51, and the other end of the second elastic member 542 is connected to one end of the L-shaped rod 541.

[0038] When the adjusting cover plate 3 is reset under the action of the reset spring 4, the protrusion 6 is used to trigger the reset assembly 54 to drive the adjustment drive end 520 of the telescopic assembly 52 away from the transition part 301.

[0039] In this embodiment, as Figure 2-3As shown, the adjustment cavity 30 includes two gear positions 302, which are arranged vertically. The second elastic element 542 is a spring. When the adjustment drive end 520 on the locking block 523 is locked in the lower gear position 301, if the user wants to reset the adjustment cover plate 3, that is, to lock the adjustment drive end 520 on the locking block 523 back into the upper gear position 301, a downward pressure force can be applied to the adjustment cover plate 3 again. The adjustment drive end 520 on the locking block 523 moves from the lower gear position 302 to the right towards the transition part 301. At this time, under the action of the second elastic element 542, the L-shaped rod 541 rotates downward, so that the other end of the L-shaped rod 541 abuts against the left side of the connecting block 522, thereby preventing the locking block 523 from moving to the left. Simultaneously, under the action of the reset spring 4, the adjusting cover 3 is popped open, and the protrusion 6 pushes open the other end of the L-shaped rod 541, causing the other end of the L-shaped rod 541 to disengage from the left side of the connecting block 522. This allows the locking block 523 to move to the left under the action of the first elastic member 531, thereby moving the adjustment drive end 520 on the locking block 523 away from the transition part 301 and locking it back into the upper gear part 301, thus achieving the reset of the adjusting cover 3.

[0040] Preferably, the adjusting cover plate 3 includes a main housing 31 and two side housings 32. The main housing 31 includes a mounting part 311, a first arc-shaped blocking part 312, and a second arc-shaped blocking part 313. The two side housings 32 are respectively disposed on the left and right sides of the main housing 31. The mounting part 311 is fixed to one end of the first arc-shaped blocking part 312, and one end of the second arc-shaped blocking part 313 is fixed to the other end of the first arc-shaped blocking part 312.

[0041] In this embodiment, as Figure 1 As shown, by cleverly combining the main housing 31 and the two side housings 32, the stability and durability of the entire adjusting cover 3 structure can be effectively enhanced. The interconnection of the first arc-shaped shielding part 312 and the second arc-shaped shielding part 313 in the main housing 31 can not only effectively shield and protect the internal components, but also cooperate with the internal components to realize the adjustment and fixation of the adjusting cover 3.

[0042] Preferably, the base 1 includes a first mounting plate 11 and a second mounting plate 12, wherein the first mounting plate 11 has a plurality of first screw holes 110 and the second mounting plate 12 has a plurality of second screw holes 120.

[0043] The front end of the first mounting plate 11 is connected to the upper end of the second mounting plate 12. The first mounting plate 11 and the second mounting plate 12 are perpendicular to each other. A plurality of first screw holes 110 are evenly distributed in the left-right direction, and the second screw holes 120 are evenly distributed in the left-right direction.

[0044] In this embodiment, as Figure 1 As shown, the treble horizontal dispersion angle adjustment device is mounted on the speaker cabinet via the first screw hole 110 and the second screw hole 120 on the base 1. The arrangement of several first screw holes 110 and second screw holes 120 makes the installation of the entire treble horizontal dispersion angle adjustment device more stable.

[0045] Preferably, a limiting strip block 7 is provided at the rear end of the first mounting plate 11, the limiting strip block 7 being used to limit the rotation range of the adjusting cover plate 3. In this embodiment, as... Figure 1 As shown, the limiting strip 7 can effectively prevent the adjusting cover plate 3 from rotating excessively, thereby preventing the adjusting cover plate 3 from being damaged and thus improving the service life of the adjusting cover plate 3.

[0046] Another aspect of this application provides a speaker, including at least two of the aforementioned high-frequency horizontal diffusion angle adjustment devices, a housing 8, and a speaker 9; the speaker 9 is installed inside the housing 8, and the two aforementioned high-frequency horizontal diffusion angle adjustment devices are symmetrically arranged on the housing 8, with the two aforementioned high-frequency horizontal diffusion angle adjustment devices located in front of the speaker 9.

[0047] One type of speaker in this solution, as described in this embodiment, is... Figure 4 As shown, there are two high-frequency horizontal diffusion angle adjustment devices. By adjusting the rotation angle of the adjustment cover plate 3 in the two high-frequency horizontal diffusion angle adjustment devices, the sound diffusion range emitted by the speaker 9 inside the housing 8 can be flexibly adjusted.

[0048] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A treble horizontal diffusion angle adjustment device, characterized in that: The device includes a base, a rotating shaft, an adjusting cover plate, a return spring, and an adjusting mechanism. The adjusting mechanism includes a fixed plate, a telescopic assembly, a locking assembly, and a return assembly. The telescopic assembly includes an adjusting drive end, and the locking assembly includes a first elastic element. The inner side of the adjusting cover plate has an adjusting cavity, which includes a transition section and at least two gear positions. One side of the adjusting cover is rotatably connected to the base via the rotating shaft. The return spring is installed on the rotating shaft. Under the elastic force of the return spring, the adjusting cover tends to rotate in the direction where the angle between the adjusting cover and the base increases. The two gear positions are disposed on one side of the transition section along the vertical direction, and both gear positions are connected to the transition section; The fixed plate is installed on the base, and the telescopic component is movably disposed on the fixed plate. The adjustment drive end of the telescopic component is limited to move within the adjustment cavity. When the adjustment cover is pressed down, the adjustment drive end of the telescopic component moves from the gear position to the transition position. The first elastic element of the locking component is connected to the telescopic component, and the locking component is used to push the adjustment drive end of the telescopic component toward the gear position, so that the adjustment drive end of the telescopic component is locked in the gear position. The reset component is disposed on the fixed plate, and the reset component is used to drive the adjustment drive end of the telescopic component to move closer to or away from the transition part.

2. The treble horizontal diffusion angle adjustment device according to claim 1, characterized in that: The adjusting mechanism also includes an L-shaped plate and two slide rails. The telescopic component includes two sliders, a connecting block and a locking block. The L-shaped plate includes a first inner side and a second inner side. The L-shaped plate is fixed to the fixed plate, and the two slide rails are respectively fixed to the first inner side and the second inner side. Both slide rails are arranged in the left-right direction. The two sliders are respectively slidably installed on the corresponding slide rails. The connecting block is installed on the slider located on the first inner side, and the locking block is installed on the slider located on the second inner side. The right end of the connecting block is fixed to the locking block, and the locking block is provided with the level adjustment drive end.

3. The treble horizontal diffusion angle adjustment device according to claim 2, characterized in that: The locking assembly also includes a locking pin fixing block and a locking pin, and the right side of the locking block has a locking hole groove; The locking pin fixing block is fixed to the fixing plate. The locking pin fixing block is located on the right side of the L-shaped plate. The locking pin passes through the locking pin fixing block. The first elastic member is sleeved on the locking pin. One end of the first elastic member is connected to the right side of the card block, and the other end of the first elastic member is connected to the left side of the locking pin fixing block. When the adjustment drive end of the telescopic component moves from the gear position to the transition position, the left end of the locking pin can engage with the locking slot.

4. The treble horizontal diffusion angle adjustment device according to claim 2, characterized in that: The reset assembly includes an L-shaped rod and a second elastic element, and a protrusion is provided on the other side of the adjusting cover plate; The L-shaped rod is rotatably mounted on the fixed plate, the L-shaped rod is located on the left side of the L-shaped plate, one end of the second elastic member is connected to the fixed plate, and the other end of the second elastic member is connected to one end of the L-shaped rod; When the adjusting cover plate is reset under the action of the reset spring, the protrusion is used to trigger the reset assembly to drive the adjustment drive end of the telescopic assembly away from the transition part.

5. The treble horizontal diffusion angle adjustment device according to claim 1, characterized in that: The adjusting cover plate includes a main housing and two side housings. The main housing includes a mounting part, a first arc-shaped blocking part, and a second arc-shaped blocking part. The two side shells are respectively disposed on the left and right sides of the main shell, the mounting part is fixed to one end of the first arc-shaped shielding part, and one end of the second arc-shaped shielding part is fixed to the other end of the first arc-shaped shielding part.

6. The treble horizontal diffusion angle adjustment device according to claim 1, characterized in that: The base includes a first mounting plate and a second mounting plate. The first mounting plate has a plurality of first screw holes, and the second mounting plate has a plurality of second screw holes. The front end of the first mounting plate is connected to the upper end of the second mounting plate. The first mounting plate and the second mounting plate are perpendicular to each other. A plurality of first screw holes are evenly distributed at intervals along the left and right directions, and the second screw holes are evenly distributed at intervals along the left and right directions.

7. A treble horizontal diffusion angle adjustment device according to claim 6, characterized in that: The rear end of the first mounting plate is provided with a limiting strip block, which is used to limit the rotation range of the adjusting cover plate.

8. A speaker, characterized in that: It includes at least two high-frequency horizontal diffusion angle adjustment devices as described in any one of claims 1-7, a housing, and a loudspeaker; the loudspeaker is installed inside the housing, the two high-frequency horizontal diffusion angle adjustment devices are symmetrically arranged in the housing, and the two high-frequency horizontal diffusion angle adjustment devices are located in front of the loudspeaker.

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