CN117294997B - Speaker assembly and emergency amplifying device comprising same - Google Patents
Speaker assembly and emergency amplifying device comprising same Download PDFInfo
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- CN117294997B CN117294997B CN202311587811.1A CN202311587811A CN117294997B CN 117294997 B CN117294997 B CN 117294997B CN 202311587811 A CN202311587811 A CN 202311587811A CN 117294997 B CN117294997 B CN 117294997B
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- 238000007906 compression Methods 0.000 claims description 20
- 230000002457 bidirectional effect Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The invention relates to the technical field of speakers, and discloses a speaker assembly and an emergency public address set containing the speaker assembly, which solve the problem that the sound angle cannot be flexibly adjusted according to the needs, and the emergency public address set comprises a control shell, wherein the control shell is of a cavity structure with an opening at the top end, a cover plate is arranged at the top of the control shell, two adjusting plates are arranged at the top of the cover plate, two first rotating shafts are respectively arranged at one side of the two adjusting plates, which is far away from each other, a first supporting part is sleeved outside the first rotating shaft, a bearing is arranged at the joint of the first rotating shaft and the first supporting part, the first supporting part is fixedly connected with the adjusting plates, the top end of the first rotating shaft is fixedly connected with a speaker body, a connecting shaft penetrates through the adjusting plates, and a bearing is arranged at the joint of the connecting shaft and the adjusting plates; the loudspeaker body can face different directions, so that the sound emitting angle of the loudspeaker body can be conveniently adjusted, and the application range is improved.
Description
Technical Field
The invention belongs to the technical field of speakers, and particularly relates to a speaker assembly and an emergency sound amplifying device comprising the speaker assembly.
Background
The emergency sound amplifying device is equipment capable of converting an audio signal into sound, the emergency sound amplifying device comprises a loudspeaker which is a common element in video and audio equipment, the loudspeaker can convert an electric signal into an acoustic signal, and normally the loudspeaker used by people is fixed at a preset position, so that the sound emitting angle of the loudspeaker is fixed, the sound transmission range is small, the sound emitting angle cannot be flexibly adjusted according to the needs of people, the needs of people are not met, the application range is small, and certain limitations exist.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the loudspeaker assembly and the emergency public address set containing the loudspeaker assembly, and the problem that the sound emitting angle cannot be flexibly adjusted according to the needs in the background art is effectively solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a speaker subassembly, which comprises a control shell, the control shell is top open-ended cavity structure, the top of control shell is equipped with the apron, the top of apron is equipped with two regulating plates, one side that two regulating plates kept away from is equipped with two first pivots respectively, the outside cover of first pivot is equipped with first supporting part, the junction of first pivot and first supporting part is equipped with the bearing, first supporting part and regulating plate fixed connection, the top fixedly connected with speaker body of first pivot, run through on the regulating plate has the connecting axle, the junction of connecting axle and regulating plate is equipped with the bearing, the one end that two connecting axles are close to each other is fixedly connected with first friction disc respectively, be equipped with on the apron with two first friction disc matched with contact friction structures, the connecting axle is connected through different direction rotary unit with two adjacent first pivots, be equipped with the carousel in the control shell, the top of carousel and the bottom of apron are connected through the spliced pole, be equipped with the direction adjustment subassembly with the second pivot on the regulating plate, the second pivot runs through the apron, the junction of second and the second pivot is equipped with the bearing with the second pivot, the second is equipped with the second friction disc on the second friction disc matched with the second friction disc, the second friction disc is equipped with the two friction disc respectively.
Preferably, the different direction rotary unit is including setting up in the two-way lead screw of one side is kept away from mutually to two regulating plates respectively, the outside cover of two-way lead screw is equipped with second supporting part, the junction of two-way lead screw and second supporting part is equipped with the bearing, second supporting part and regulating plate fixed connection, the both ends of two-way lead screw are overlapped respectively and are equipped with first fly leaf, the connected mode of first fly leaf and two-way lead screw is threaded connection, the bottom fixedly connected with first pinion of first fly leaf, the bottom fixedly connected with first gear of first pivot, and first gear and first pinion are engaged with, first fly leaf and regulating plate pass through the guide and connect, the outside fixed cover of two-way lead screw is equipped with first bevel gear, fixedly connected with second bevel gear on the connecting axle, and second bevel gear and first bevel gear are engaged with each other, first friction disc and regulating plate pass through the attenuator and are connected.
Preferably, the damper comprises a pressing ring sleeved outside the connecting shaft, the pressing ring is located on one side, close to the connecting shaft, of the first friction disc, the pressing ring is in contact with the first friction disc, a plurality of through holes are formed in the adjusting plate, first guide columns are arranged in the through holes and are fixedly connected with the pressing ring, first compression springs are sleeved outside the first guide columns, and two ends of each first compression spring are fixedly connected with the pressing ring and the adjusting plate respectively.
Preferably, the guide piece comprises a limiting block fixedly mounted on the first movable plate, two guide holes are formed in the adjusting plate, the limiting block is located in the corresponding guide hole, and the top and the bottom of the limiting block are respectively in contact with the inner walls of the guide holes.
Preferably, the contact friction structure comprises a first double-shaft motor arranged between two first friction discs, the first double-shaft motor is fixedly connected with a cover plate, two output ends of the first double-shaft motor are respectively fixedly connected with a third friction disc, and one sides, close to the two first friction discs, of the first double-shaft motor are respectively contacted with the two third friction discs.
Preferably, the direction adjustment assembly comprises at least two anti-shaking blocks arranged at the top of the rotary table, the anti-shaking blocks are fixedly connected with the inner wall of the control shell, the anti-shaking blocks are in contact with the top of the rotary table, a first single-shaft motor is fixedly connected in the control shell and located below the rotary table, the output end of the first single-shaft motor is fixedly connected with a fixing block, a sliding groove is formed in the top of the fixing block, a sliding block is arranged in the sliding groove, the top of the sliding block is fixedly connected with the bottom of the rotary table, and a sliding supporting unit is arranged at the bottom of the rotary table.
Preferably, the sliding support unit comprises a plurality of support columns fixedly arranged at the bottom of the turntable, the bottoms of the support columns are fixedly connected with idler wheels, and the idler wheels are contacted with the inner wall of the bottom of the control shell.
Preferably, the single-double friction driver comprises a third rotating shaft arranged below the second friction disc, the bottom end of the third rotating shaft is connected with the turntable through a bearing, the top end of the third rotating shaft is fixedly connected with a fourth friction disc, the top of the fourth friction disc is contacted with the bottom of the second friction disc, a third bevel gear is fixedly sleeved on the outer part of the third rotating shaft, a second double-shaft motor is fixedly connected with the top of the turntable, two output ends of the second double-shaft motor are respectively fixedly connected with a fourth bevel gear, the two fourth bevel gears are respectively meshed with the two third bevel gears, and an adjusting and positioning structure which is respectively matched with the two second friction discs is arranged on the turntable.
Preferably, the adjusting and positioning structure comprises a positioning plate arranged on one side of the second friction disc, a second movable plate and a fixed plate are arranged on one side of the positioning plate, the bottom of the fixed plate is fixedly connected with a rotary table, two second guide posts are fixedly connected to the positioning plate, the second guide posts sequentially penetrate through the second movable plate and the fixed plate, the positioning plate and the second movable plate are connected through second compression springs, one side, close to each other, of the two second movable plates is fixedly connected with a second toothed plate respectively, a second gear is arranged between the two second toothed plates, a motor base is fixedly connected to the rotary table, a second single-shaft motor is fixedly connected to the motor base, the output end of the second single-shaft motor is fixedly connected with the second gear, and the two second toothed plates are meshed with the second gear respectively.
The invention also provides an emergency sound amplifying device containing the loudspeaker assembly, which comprises the loudspeaker assembly according to any technical scheme.
Compared with the prior art, the invention has the beneficial effects that:
four speaker bodies are respectively towards all around, can evenly spread sound around, when need spread sound to two directions, contact friction structure passes through friction drive first friction disc and connecting axle rotation, so that two speaker bodies that are located on same regulating plate spread sound towards the same direction, speaker body that is located on two regulating plates respectively spreads sound towards opposite direction, when needing to change the propagation direction of speaker body, through the rotatory of single double type friction drive two second friction discs and second pivot, change the inclination of two regulating plates, and then adjust the propagation direction of speaker body, speaker body can spread sound to two different directions, when need four speaker bodies to spread sound towards a direction, last two second friction discs of drive through single double type friction drive, finally make two regulating plates be in on the same straight line, can make four speaker bodies all propagate sound towards a direction, it is rotatory to drive the carousel through direction adjustment subassembly, can make four speaker bodies that are located on the apron rotate simultaneously through the spliced pole drive, can make the whole speaker body that is located, can make the whole loudspeaker body rotate towards different direction, the loudspeaker can not be suitable for the range of adjustment, the loudspeaker has improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the inside of the control housing of the present invention;
FIG. 3 is an enlarged partial schematic view of the present invention at A in FIG. 2;
FIG. 4 is a schematic view of the structure of the adjusting plate of the present invention;
FIG. 5 is a schematic view of the structure of the contact friction structure of the present invention;
FIG. 6 is a schematic structural view of a fixing block according to the present invention;
FIG. 7 is a schematic diagram of the structure of the positioning structure according to the present invention;
fig. 8 is a schematic diagram showing the split structure of the second friction plate and the fourth friction plate according to the present invention.
In the figure: 1. a control housing; 2. an adjustment plate; 3. a first rotating shaft; 4. a speaker body; 5. a first support portion; 6. a connecting shaft; 7. a first friction plate; 8. a turntable; 9. a second rotating shaft; 10. a second friction plate; 11. a two-way screw rod; 12. a second supporting part; 13. a first movable plate; 14. a first toothed plate; 15. a first gear; 16. a first bevel gear; 17. a second bevel gear; 18. a pressing ring; 19. a first guide post; 20. a first compression spring; 21. a guide hole; 22. a limiting block; 23. a first biaxial motor; 24. a third friction plate; 25. a through hole; 26. a first single-shaft motor; 27. a fixed block; 28. a chute; 29. a slide block; 30. a support column; 31. a roller; 32. a third rotating shaft; 33. a fourth friction plate; 34. a third bevel gear; 35. a second double-shaft motor; 36. a fourth bevel gear; 37. a positioning plate; 38. a second movable plate; 39. a second guide post; 40. a second compression spring; 41. a fixing plate; 42. a second toothed plate; 43. a second gear; 44. a motor base; 45. a second single-shaft motor; 46. a shake stop block; 47. a connecting column; 48. and a cover plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The first embodiment is given by fig. 1 to 8, the invention comprises a control shell 1, the control shell 1 is of a cavity structure with an opening at the top, a cover plate 48 is arranged at the top of the control shell 1, two adjusting plates 2 are arranged at the top of the cover plate 48, two first rotating shafts 3 are respectively arranged at one side of the two adjusting plates 2, which is far away from each other, a first supporting part 5 is sleeved outside the first rotating shafts 3, a bearing is arranged at the joint of the first rotating shafts 3 and the first supporting part 5, the first supporting part 5 is fixedly connected with the adjusting plates 2, the top end of the first rotating shafts 3 is fixedly connected with a loudspeaker body 4, a connecting shaft 6 penetrates through the adjusting plates 2, a bearing is arranged at the joint of the connecting shaft 6 and the adjusting plates 2, one end, which is close to each connecting shaft 6, is fixedly connected with a first friction disk 7, a contact friction structure, which is matched with the two first friction disks 7, is arranged on the cover plate 48, the connecting shaft 6 is connected with two adjacent first rotating shafts 3 through a different-direction rotating unit, a turntable 8 is arranged in the control shell 1, the bottoms of the first rotating shafts 8 and the cover plate 48 are connected with the first rotating shafts through a connecting post 47, the first rotating shafts 8 are fixedly connected with the bottoms of the first rotating shafts 9 and the second rotating shafts 9 are fixedly connected with the second rotating shafts 9, which are fixedly connected with the second rotating shafts 9, and the second rotating shafts 9 are respectively, and are fixedly connected with the second rotating shafts 9, and the rotating shafts 9 are fixedly connected with the rotating shafts, respectively, and the rotating shafts 9, and the two rotating shafts are respectively, and the rotating shafts 9 are connected with the rotating shafts and 9, and the rotating and 9 are respectively, and the rotating and 9; four speaker bodies 4 are respectively towards all around, can evenly spread sound around, when need carry out propagation sound to two directions, contact friction structure passes through friction drive first friction disc 7 and connecting axle 6 rotation, so that two speaker bodies 4 that are located on same regulating plate 2 spread sound towards same direction, speaker bodies 4 that are located two regulating plates 2 respectively spread sound towards opposite direction, the pronunciation angle has been changed, when need change the propagation direction of speaker body 4, through the rotation of two second friction discs 10 of single double friction drive ware and second pivot 9, change the inclination of two regulating plate 2, and then adjust the propagation direction of speaker body 4, speaker body 4 can spread sound to two different directions, when need four speaker bodies 4 to spread sound towards a direction, through single double friction drive ware continuously drive two second friction discs 10 rotation, finally make two regulating plate 2 be in on the same straight line, can make four speaker bodies 4 all face a direction propagation sound, through direction adjustment subassembly drive carousel 8 rotation, can make speaker bodies 48 through the rotatory 48 of single double friction drive ware, can make the whole loudspeaker body 48 be located the rotation range of rotation of four speakers 48, can not be suitable for the whole, thereby, can improve the whole loudspeaker 48 with the rotation range of the speaker body 48.
In the second embodiment, on the basis of the first embodiment, as shown in fig. 4 and 5, the anisotropic rotation unit includes a bidirectional screw rod 11 respectively disposed at a side of the two adjusting plates 2 away from each other, a second supporting portion 12 is sleeved outside the bidirectional screw rod 11, a bearing is disposed at a connection position between the bidirectional screw rod 11 and the second supporting portion 12, the second supporting portion 12 is fixedly connected with the adjusting plates 2, two ends of the bidirectional screw rod 11 are respectively sleeved with a first movable plate 13, the first movable plate 13 is connected with the bidirectional screw rod 11 in a threaded manner, a first toothed plate 14 is fixedly connected to the bottom of the first movable plate 13, a first gear 15 is fixedly connected to the bottom end of the first rotating shaft 3, the first gear 15 is meshed with the first toothed plate 14, the first movable plate 13 is connected with the adjusting plates 2 through a guide piece, a first bevel gear 16 is fixedly sleeved outside the bidirectional screw rod 11, a second bevel gear 17 is fixedly connected to the connecting shaft 6, the second bevel gear 17 is meshed with the first bevel gear 16, the first friction disk 7 is connected with the adjusting plate 2 through a damper, the damper comprises a pressing ring 18 sleeved outside the connecting shaft 6, the pressing ring 18 is positioned on one side of the first friction disk 7 close to the connecting shaft 6, the pressing ring 18 is contacted with the first friction disk 7, a plurality of through holes 25 are formed in the adjusting plate 2, a first guide column 19 is arranged in the through holes 25, the first guide column 19 is fixedly connected with the pressing ring 18, a first compression spring 20 is sleeved outside the first guide column 19, two ends of the first compression spring 20 are fixedly connected with the pressing ring 18 and the adjusting plate 2 respectively, the guide piece comprises a limiting block 22 fixedly mounted on the first movable plate 13, two guide holes 21 are formed in the adjusting plate 2, the limiting block 22 is positioned in the corresponding guide holes 21, the top and the bottom of the limiting block 22 are respectively contacted with the inner walls of the guide holes 21, the contact friction structure comprises a first double-shaft motor 23 arranged between two first friction disks 7, the first double-shaft motor 23 is fixedly connected with a cover plate 48, two output ends of the first double-shaft motor 23 are respectively fixedly connected with a third friction disk 24, and one side, close to the two first friction disks 7, is respectively contacted with the two third friction disks 24;
when two regulating plates 2 are in parallel state, first friction disk 7 and third friction disk 24 are in contact, through the design of first biax motor 23 drive third friction disk 24, third friction disk 24 can drive first friction disk 7 and connecting axle 6 rotation through frictional force, connecting axle 6 drive second bevel gear 17 is rotatory, second bevel gear 17 passes through first bevel gear 16 drive two-way lead screw 11 and rotates, two first fly leaves 13 can be driven to two first movable plates 13 in opposite directions, first movable plate 13 passes through first pinion rack 14 and drives first gear 15 and first pivot 3 rotation, can make two first pivots 3 in opposite directions rotate, through the design of guiding hole 21 and stopper 22, so that first movable plate 13 moves steadily relative regulating plate 2 horizontal direction, first compression spring 20 initial state is in compression state, first compression spring 20 exerts pressure to pressing ring 18, so that pressing ring 18 presses on first friction disk 7, the position of first friction disk 7 and connecting axle 6 is limited, when second pivot 9 drive regulating plate 2 rotates, so that two second movable plate 2 is in order to avoid two and is in the second pivot 7 and is no longer in parallel state when first pivot 7 and first pivot 6 is in the second pivot 6, prevent the influence of rotation of first friction disk 4 and first pivot 6 on the first pivot 6.
Based on the first embodiment, as shown in fig. 2 and fig. 6, the direction adjusting assembly includes at least two anti-shake blocks 46 disposed at the top of the turntable 8, the anti-shake blocks 46 are fixedly connected with the inner wall of the control shell 1, the anti-shake blocks 46 are in contact with the top of the turntable 8, a first single-shaft motor 26 disposed below the turntable 8 is fixedly connected in the control shell 1, the output end of the first single-shaft motor 26 is fixedly connected with a fixed block 27, the top of the fixed block 27 is provided with a sliding groove 28, a sliding block 29 is disposed in the sliding groove 28, the top of the sliding block 29 is fixedly connected with the bottom of the turntable 8, the bottom of the turntable 8 is provided with a sliding support unit, the sliding support unit includes a plurality of support columns 30 fixedly mounted at the bottom of the turntable 8, the bottom of the support columns 30 is fixedly connected with a roller 31, and the roller 31 is in contact with the bottom inner wall of the control shell 1;
through the design of support column 30 and gyro wheel 31, support carousel 8, the resistance that receives when reducing carousel 8 rotation, through the design of stopping shaking piece 46, avoid carousel 8 vertical direction to rock, it is rotatory to drive fixed block 27 through first unipolar motor 26, fixed block 27 passes through slider 29 drive carousel 8 rotation, through the design of slider 29 and spout 28, the bottom of slider 29 does not contact with the bottom inner wall of spout 28, avoid carousel 8 and slider 29 to exert decurrent pressure to fixed block 27 and first unipolar motor 26, first unipolar motor 26 can pass through fixed block 27 and slider 29 drive carousel 8 rotation simultaneously.
In the fourth embodiment, based on the first embodiment, as shown in fig. 2, fig. 3, fig. 7 and fig. 8, the single double friction driver includes a third rotating shaft 32 disposed below the second friction disk 10, the bottom end of the third rotating shaft 32 is connected with a turntable 8 through a bearing, the top end of the third rotating shaft 32 is fixedly connected with a fourth friction disk 33, the top of the fourth friction disk 33 is contacted with the bottom of the second friction disk 10, a third bevel gear 34 is fixedly sleeved on the outer part of the third rotating shaft 32, the top of the turntable 8 is fixedly connected with a second double shaft motor 35, two output ends of the second double shaft motor 35 are respectively and fixedly connected with a fourth bevel gear 36, the two fourth bevel gears 36 are respectively meshed with the two third bevel gears 34, the turntable 8 is provided with an adjusting and positioning structure which is respectively matched with the two second friction disks 10, the adjusting and positioning structure includes a positioning plate 37 disposed on one side of the second friction disk 10, one side of the positioning plate 37 is provided with a second movable plate 38 and a fixed plate 41, the bottom of the fixed plate 41 is fixedly connected with the turntable 8, the positioning plate 37 is fixedly connected with the turntable 8, two guide posts 39 are respectively connected with the second bevel gear 38 and the second movable plate 43, the two guide posts 45 are respectively meshed with the second bevel gear 38, the two fixed plate 45 are respectively, and the two fixed plate 45 are respectively connected with the second single shaft motor 38 and the second bevel gear 43 and the second gear 43 are respectively, the two fixed plate 43 are respectively, and the two fixed end of the second single shaft drive motor is meshed with the second bevel gear 38, and the second bevel gear is meshed with the second bevel gear and the second bevel gear;
the second bevel gears 36 are driven to rotate by the second double-shaft motor 35, the fourth bevel gears 36 drive the third rotating shaft 32 and the fourth friction disc 33 to rotate by the third bevel gears 34, the fourth friction disc 33 can drive the two second friction discs 10 and the second rotating shaft 9 to rotate synchronously and anticlockwise by friction force, when one of the second rotating shafts 9 is required to rotate independently so as to change the inclination angle of one of the adjusting plates 2, the other adjusting plate 2 is kept stationary, the second gear 43 is driven to rotate by the second single-shaft motor 45, the second gear 43 drives the two second toothed plates 42 to move anticlockwise, the second toothed plates 42 drive one of the corresponding positioning plates 37 to move towards the second friction disc 10 by the second movable plate 38, the other positioning plate 37 moves towards a direction away from the second friction disc 10, finally one of the positioning plates 37 contacts with the second friction disc 10, with the continuous rotation of the second gear 43, the positioning plate 37 contacted with the second friction disk 10 stops moving, the corresponding second movable plate 38 moves towards the positioning plate 37, the second compression spring 40 is in a compressed state, the second compression spring 40 applies pressure to the positioning plate 37, so that the positioning plate 37 contacted with the second friction disk 10 elastically presses the second friction disk 10, one of the second friction disk 10 contacted with the positioning plate 37 and the second rotating shaft 9 are kept stationary, the fourth friction disk 33 is prevented from driving the second friction disk 10 and the second rotating shaft 9 to rotate through friction force, when the two third rotating shafts 32 and the fourth friction disk 33 simultaneously rotate, one adjusting plate 2 can change the inclination angle, the other adjusting plate 2 is kept stationary, the included angle between the two adjusting plates 2 is changed, the loudspeaker bodies 4 on the two adjusting plates 2 respectively transmit sound in two directions, the pronunciation angle between the two directions can be adjusted.
An emergency amplifying device comprising the speaker assembly according to the present embodiment includes the speaker assembly according to any one of the above embodiments.
Working principle: the four speaker bodies 4 face to the periphery respectively, so that sound can be uniformly transmitted to the periphery, when sound is transmitted to two directions, the contact friction structure drives the first friction disc 7 and the connecting shaft 6 to rotate through friction force, the connecting shaft 6 drives the two first rotating shafts 3 to rotate in opposite directions respectively through the opposite direction rotating units, so that the adjacent two speaker bodies 4 rotate in opposite directions, when the direction of the speaker bodies 4 is perpendicular to the adjusting plate 2, the contact friction structure stops driving the first friction disc 7 and the connecting shaft 6 to rotate, the two speaker bodies 4 positioned on the same adjusting plate 2 transmit sound in the same direction, the speaker bodies 4 positioned on the two adjusting plates 2 transmit sound in opposite directions respectively, the sounding angle is changed, when the transmission direction of the speaker bodies 4 is required to be changed, the two second friction discs 10 and the second rotating shafts 9 are driven to rotate through the single-double type friction driver, so that the two second rotating shafts 9 respectively drive the two adjusting plates 2 to rotate in opposite directions, the inclination angles of the two adjusting plates 2 are changed, the propagation direction of the speaker body 4 is regulated, the speaker body 4 can propagate sound in two different directions, when four speaker bodies 4 are required to propagate sound in one direction, the two second friction discs 10 are continuously driven to rotate by the single double friction driver, finally, the two adjusting plates 2 are positioned on the same straight line, the four speaker bodies 4 can propagate sound in one direction, the rotating disc 8 is driven to rotate by the direction adjusting assembly, the cover plate 48 is driven to synchronously rotate by the rotating disc 8 through the connecting column 47, the four speaker bodies 4 positioned on the cover plate 48 can integrally rotate, so that the speaker bodies 4 can face different directions, the sound emitting angle of the loudspeaker body 4 is convenient to adjust, and the application range is improved;
when the two adjusting plates 2 are in a parallel state, the first friction disc 7 and the third friction disc 24 are in contact, the third friction disc 24 is driven to rotate through the first double-shaft motor 23, the first friction disc 7 and the connecting shaft 6 can be driven to rotate through friction force by the third friction disc 24, the connecting shaft 6 drives the second bevel gear 17 to rotate, the second bevel gear 17 drives the bidirectional screw rod 11 through the first bevel gear 16, the bidirectional screw rod 11 can drive the two first movable plates 13 to move in opposite directions, the first movable plates 13 drive the first gear 15 and the first rotating shaft 3 to rotate through the first toothed plate 14, the two first rotating shafts 3 can be enabled to rotate in opposite directions, the first movable plates 13 can be enabled to stably move in the horizontal direction relative to the adjusting plates 2 through the design of the guide holes 21 and the limiting blocks 22, the initial state of the first compression springs 20 is in a compression state, the first compression springs 20 apply pressure to the pressing rings 18 so that the pressing rings 18 are pressed on the first friction disc 7 and the positions of the connecting shaft 6, when the second rotating plates 9 drive the adjusting plates 2 to rotate, the two first friction discs 7 and the first rotating shafts 7 are not connected with the first rotating shafts 6 through the first rotating shafts 4, and the first rotating plates 2 are prevented from being in a non-parallel state, and the first rotating state is prevented from being affected by the first rotating plates 4 and the first rotating plates 6;
through the design of the support column 30 and the roller 31, the turntable 8 is supported, the resistance to the turntable 8 during rotation is reduced, the turntable 8 is prevented from shaking in the vertical direction through the design of the shaking stopping block 46, the fixed block 27 is driven to rotate through the first single-shaft motor 26, the fixed block 27 is driven to rotate through the sliding block 29, the turntable 8 is driven to rotate through the sliding block 29, the bottom of the sliding block 29 is not contacted with the inner wall of the bottom of the sliding groove 28 through the design of the sliding block 29 and the sliding groove 28, the turntable 8 and the sliding block 29 are prevented from applying downward pressure to the fixed block 27 and the first single-shaft motor 26, and meanwhile, the first single-shaft motor 26 can drive the turntable 8 to rotate through the fixed block 27 and the sliding block 29;
the second bevel gears 36 are driven to rotate by the second double-shaft motor 35, the fourth bevel gears 36 drive the third rotating shaft 32 and the fourth friction disc 33 to rotate by the third bevel gears 34, the fourth friction disc 33 can drive the two second friction discs 10 and the second rotating shaft 9 to rotate synchronously and anticlockwise by friction force, when one of the second rotating shafts 9 is required to rotate independently so as to change the inclination angle of one of the adjusting plates 2, the other adjusting plate 2 is kept stationary, the second gear 43 is driven to rotate by the second single-shaft motor 45, the second gear 43 drives the two second toothed plates 42 to move anticlockwise, the second toothed plates 42 drive one of the corresponding positioning plates 37 to move towards the second friction disc 10 by the second movable plate 38, the other positioning plate 37 moves towards a direction away from the second friction disc 10, finally one of the positioning plates 37 contacts with the second friction disc 10, with the continuous rotation of the second gear 43, the positioning plate 37 contacted with the second friction disk 10 stops moving, the corresponding second movable plate 38 moves towards the positioning plate 37, the second compression spring 40 is in a compressed state, the second compression spring 40 applies pressure to the positioning plate 37, so that the positioning plate 37 contacted with the second friction disk 10 elastically presses the second friction disk 10, one of the second friction disk 10 contacted with the positioning plate 37 and the second rotating shaft 9 are kept stationary, the fourth friction disk 33 is prevented from driving the second friction disk 10 and the second rotating shaft 9 to rotate through friction force, when the two third rotating shafts 32 and the fourth friction disk 33 simultaneously rotate, one adjusting plate 2 can change the inclination angle, the other adjusting plate 2 is kept stationary, the included angle between the two adjusting plates 2 is changed, the loudspeaker bodies 4 on the two adjusting plates 2 respectively transmit sound in two directions, the pronunciation angle between the two directions can be adjusted.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A loudspeaker assembly comprising a control housing (1), characterized in that: the control shell (1) is of a cavity structure with an opening at the top, the top of the control shell (1) is provided with a cover plate (48), the top of the cover plate (48) is provided with two adjusting plates (2), one sides of the two adjusting plates (2) away from each other are respectively provided with two first rotating shafts (3), the outer part of each first rotating shaft (3) is sleeved with a first supporting part (5), the joint of each first rotating shaft (3) and each first supporting part (5) is provided with a bearing, the first supporting parts (5) and the adjusting plates (2) are fixedly connected, the top of each first rotating shaft (3) is fixedly connected with a loudspeaker body (4), a connecting shaft (6) penetrates through the adjusting plates (2), the joint of each connecting shaft (6) and each adjusting plate (2) is provided with a bearing, one ends of the two connecting shafts (6) close to each other are respectively fixedly connected with a first friction disc (7), the cover plate (48) is provided with a contact friction structure matched with the two first friction discs (7), the connecting shafts (6) are connected with the two adjacent first rotating shafts (3) through different-direction rotating units, the control shell (1) is internally provided with a loudspeaker body (4), the connecting shaft (8) is connected with the rotating shaft (8) through the connecting shaft (8) and the rotating shaft (8), the rotating assembly (8) is fixedly connected with the rotating shaft (2), the second rotating shaft (9) penetrates through the cover plate (48), a bearing is arranged at the joint of the second rotating shaft (9) and the cover plate (48), the bottom end of the second rotating shaft (9) is fixedly connected with a second friction disc (10), and a single-double friction driver which is respectively matched with the two second friction discs (10) is arranged on the rotary disc (8);
the opposite rotating unit comprises two bidirectional screw rods (11), wherein the two bidirectional screw rods (11) are respectively arranged on one side, far away from the two adjusting plates (2), of the bidirectional screw rods (11), a second supporting part (12) is sleeved outside the bidirectional screw rods (11), a bearing is arranged at the joint of the bidirectional screw rods (11) and the second supporting part (12), the second supporting part (12) is fixedly connected with the adjusting plates (2), a first movable plate (13) is sleeved at two ends of the bidirectional screw rods (11), the first movable plate (13) is in threaded connection with the bidirectional screw rods (11) in a connecting mode, a first toothed plate (14) is fixedly connected to the bottom of the first movable plate (13), a first gear (15) is fixedly connected to the bottom end of the first rotating shaft (3), the first gear (15) is meshed with the first toothed plate (14), the first movable plate (13) is connected with the adjusting plates (2) through guide pieces, a first bevel gear (16) is fixedly sleeved outside the bidirectional screw rods (11), a second bevel gear (17) is fixedly connected to the connecting shaft (6), and the first bevel gear (17) is meshed with the first bevel plate (7);
the contact friction structure comprises a first double-shaft motor (23) arranged between two first friction disks (7), the first double-shaft motor (23) is fixedly connected with a cover plate (48), two output ends of the first double-shaft motor (23) are respectively fixedly connected with a third friction disk (24), and one side, close to the two first friction disks (7), is respectively contacted with the two third friction disks (24);
the direction adjusting assembly comprises at least two anti-shake blocks (46) arranged at the top of the rotary table (8), the anti-shake blocks (46) are fixedly connected with the inner wall of the control shell (1), the anti-shake blocks (46) are in contact with the top of the rotary table (8), a first single-shaft motor (26) positioned below the rotary table (8) is fixedly connected in the control shell (1), the output end of the first single-shaft motor (26) is fixedly connected with a fixed block (27), a sliding groove (28) is formed in the top of the fixed block (27), a sliding block (29) is arranged in the sliding groove (28), the top of the sliding block (29) is fixedly connected with the bottom of the rotary table (8), and a sliding supporting unit is arranged at the bottom of the rotary table (8);
the direction adjusting assembly comprises at least two anti-shake blocks (46) arranged at the top of the rotary table (8), the anti-shake blocks (46) are fixedly connected with the inner wall of the control shell (1), the anti-shake blocks (46) are in contact with the top of the rotary table (8), a first single-shaft motor (26) positioned below the rotary table (8) is fixedly connected in the control shell (1), the output end of the first single-shaft motor (26) is fixedly connected with a fixed block (27), a sliding groove (28) is formed in the top of the fixed block (27), a sliding block (29) is arranged in the sliding groove (28), the top of the sliding block (29) is fixedly connected with the bottom of the rotary table (8), and a sliding supporting unit is arranged at the bottom of the rotary table (8);
the single-double friction driver comprises a third rotating shaft (32) arranged below a second friction disc (10), the bottom end of the third rotating shaft (32) is connected with a rotary disc (8) through a bearing, the top end of the third rotating shaft (32) is fixedly connected with a fourth friction disc (33), the top of the fourth friction disc (33) is contacted with the bottom of the second friction disc (10), a third bevel gear (34) is fixedly sleeved outside the third rotating shaft (32), a second double-shaft motor (35) is fixedly connected to the top of the rotary disc (8), two output ends of the second double-shaft motor (35) are respectively fixedly connected with a fourth bevel gear (36), the two fourth bevel gears (36) are respectively meshed with the two third bevel gears (34), and an adjusting and positioning structure which is respectively matched with the two second friction discs (10) is arranged on the rotary disc (8);
the utility model provides an adjust location structure is including setting up locating plate (37) in second friction disc (10) one side, one side of locating plate (37) is equipped with second fly leaf (38) and fixed plate (41), the bottom and carousel (8) fixed connection of fixed plate (41), fixedly connected with two second guide posts (39) on locating plate (37), second guide post (39) run through second fly leaf (38) and fixed plate (41) in proper order, locating plate (37) and second fly leaf (38) are connected through second compression spring (40), one side that two second fly leaf (38) are close to is fixedly connected with second pinion rack (42) respectively, be equipped with second gear (43) between two second pinion rack (42), fixedly connected with motor cabinet (44) on carousel (8), fixedly connected with second unipolar motor (45) on motor cabinet (44), the output and second gear (43) of second unipolar motor (45) are fixedly connected with, and two second pinion rack (42) mesh with second gear (43) respectively.
2. A loudspeaker assembly according to claim 1, wherein: the damper comprises a pressing ring (18) sleeved outside the connecting shaft (6), the pressing ring (18) is located on one side, close to the connecting shaft (6), of the first friction disc (7), the pressing ring (18) is in contact with the first friction disc (7), a plurality of through holes (25) are formed in the adjusting plate (2), first guide columns (19) are arranged in the through holes (25), the first guide columns (19) are fixedly connected with the pressing ring (18), first compression springs (20) are sleeved outside the first guide columns (19), and two ends of each first compression spring (20) are fixedly connected with the corresponding pressing ring (18) and the corresponding adjusting plate (2).
3. A loudspeaker assembly according to claim 1, wherein: the guide piece comprises a limiting block (22) fixedly mounted on the first movable plate (13), two guide holes (21) are formed in the adjusting plate (2), the limiting block (22) is located in the corresponding guide hole (21), and the top and the bottom of the limiting block (22) are respectively contacted with the inner wall of the guide hole (21).
4. A loudspeaker assembly according to claim 1, wherein: the sliding support unit comprises a plurality of support columns (30) fixedly arranged at the bottom of the turntable (8), the bottoms of the support columns (30) are fixedly connected with rollers (31), and the rollers (31) are contacted with the inner wall of the bottom of the control shell (1).
5. An emergency public address set, characterized in that: comprising a loudspeaker assembly as claimed in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311587811.1A CN117294997B (en) | 2023-11-27 | 2023-11-27 | Speaker assembly and emergency amplifying device comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311587811.1A CN117294997B (en) | 2023-11-27 | 2023-11-27 | Speaker assembly and emergency amplifying device comprising same |
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| CN117294997A CN117294997A (en) | 2023-12-26 |
| CN117294997B true CN117294997B (en) | 2024-01-23 |
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| CN202311587811.1A Active CN117294997B (en) | 2023-11-27 | 2023-11-27 | Speaker assembly and emergency amplifying device comprising same |
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