Meeting vertical microphone capable of adaptively adjusting elevation angle

Abstract

The invention relates to a conference vertical microphone capable of adaptively adjusting an elevation angle in the technical field of microphones, and the microphone comprises a base, the top of the base is fixedly provided with a supporting cylinder, and the interior of the supporting cylinder is movably provided with a vertical pipe; the lifting mechanism is installed in the supporting cylinder and used for adjusting the height of the vertical pipe; the microphone body is arranged at the top of the vertical pipe, and a mounting seat is fixedly mounted at the bottom of the microphone body; and elevation angle adjusting assemblies are arranged at the bottom of the mounting seat and the top of the vertical pipe. The height of the microphone can be flexibly adjusted, manual adjustment is not needed, the use requirements of different scenes are met, the angle of the microphone can be adjusted in the horizontal direction and the elevation angle of the microphone can be adjusted in the vertical direction, the limitation of the fixed angle of a traditional microphone is broken through through the horizontal and vertical adjustment mode, and the application range of the microphone is widened. The microphone can be accurately adapted to various speaking postures and positions, and the omni-directional angle adjustment of the microphone is realized.

Description

Technical Field

[0001] This invention relates to the field of microphone technology, and more particularly to a vertical microphone for conferences with an adaptively adjustable elevation angle. Background Technology

[0002] A microphone, also known as a transducer, is an energy conversion device that converts sound signals into electrical signals. Microphones are classified into dynamic, condenser, electret, and the recently emerging silicon micro-microphones, as well as liquid microphones and laser microphones. Most microphones are electret condenser microphones, which work by using a diaphragm made of polymer material with permanent charge isolation. In modern conference settings, microphones are crucial equipment. However, existing upright conference microphones have certain problems in practical use: they usually require tedious manual adjustment of the elevation angle, a complex process that requires users to spend extra time and effort. This can significantly impact meeting efficiency in time-sensitive or speaker-switching scenarios. Furthermore, for those unfamiliar with operation, it is difficult to quickly adjust the microphone to the appropriate elevation angle, resulting in poor sound pickup and affecting the audio quality of the meeting.

[0003] To address the inconvenience of adjusting the tilt angle of upright microphones, a search revealed that invention patent CN118509755B discloses a conference upright microphone with adaptive tilt angle adjustment. This microphone includes a shotgun microphone mounted on a microphone stand. A drive assembly is installed within the microphone stand, which is connected to a hinge via the drive assembly. A microphone swivel is mounted at the bottom of the hinge and rotatably mounted on the top of a base. A rotation limit assembly is provided between the microphone swivel and the base. The shotgun microphone is rotatably mounted on the top of the hinge via the drive assembly, which ensures that the shotgun microphone remains stably at a fixed tilt angle relative to the microphone swivel.

[0004] Based on the aforementioned patents, the existing technology still has the following technical problems: When adjusting the microphone elevation angle through the cooperation of the driving component and the rotating shaft, the existing technology does not have a good structure for fixing the adjusted elevation angle. As a result, the microphone may still return to its original position under external force, which affects the user's needs. Secondly, adjusting the microphone elevation angle by rotation is not flexible. Therefore, a conference vertical microphone with adaptive elevation angle adjustment is proposed to improve the above problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention in view of the above-mentioned prior art is that when adjusting the elevation angle of the microphone, due to the lack of a good adjustable elevation angle fixing structure, the microphone will still have the phenomenon of returning to its original elevation angle under the action of external force, thus affecting the user's usage needs.

[0006] To address the above problems, the present invention provides a vertical microphone for conferences with adaptively adjustable elevation angle, comprising:

[0007] The base has a support cylinder fixedly installed on its top, and a vertical tube is movably installed inside the support cylinder.

[0008] A lifting mechanism, which is installed inside the support cylinder, is used to adjust the height of the riser.

[0009] The microphone body is disposed on the top of the riser, and a mounting base is fixedly installed on the bottom of the microphone body;

[0010] The bottom of the mounting base and the top of the riser are provided with an elevation adjustment assembly. The elevation adjustment assembly includes a T-shaped platform fixedly installed on the top of the riser. A central hole is opened in the middle of the top of the T-shaped platform. A longitudinal shaft is rotatably connected to the inner wall of the central hole through a bearing. A central ring is fixed to the top of the longitudinal shaft. A horizontal shaft is rotatably connected to the inner wall of the central ring through a bearing. A gate-shaped rotating plate is fixed to both sides of the outer wall of the horizontal shaft. The top of the gate-shaped rotating plate is fixed to the bottom of the mounting base. A connecting hole is opened on both sides of the top of the T-shaped platform. A threaded sleeve is rotatably connected to the inner wall of the connecting hole through a bearing. A movable cylinder is fitted on the outer wall of the T-shaped platform. A fixed seat is fixed on both sides of the inner wall of the movable cylinder. A threaded fixed rod is fixedly installed at one bottom end of each fixed seat. The threaded fixed rod is screwed to the threaded sleeve. An actuating assembly is provided on the inner wall of the movable cylinder and one end of the horizontal shaft.

[0011] The present invention is further configured such that the actuating component includes a fixing ring fixed to one end of the horizontal shaft, and an L-shaped rod is fixed to one side of the fixing ring. A buffer component is provided at one end of the L-shaped rod, and a ball is provided at one end of the buffer component. An annular groove is provided on the inner wall of the movable cylinder, and the ball fits against the inner wall of the annular groove. An actuating frame is fixed to one side of the bottom of the movable cylinder.

[0012] The invention is further configured such that the buffer assembly includes an insertion hole at one end of an L-shaped rod, and a telescopic rod inserted into the insertion hole is fixed on one side of the sphere, with a first spring fixedly installed at one end of the telescopic rod and one end of the insertion hole.

[0013] The invention is further configured such that a corner positioning assembly is provided at the bottom of the longitudinal shaft and inside the T-shaped platform, and the corner positioning assembly includes a central cavity opened at the bottom of the central hole, a ratchet disk inserted into the central cavity is fixed at the bottom of the longitudinal shaft, a fixed cylinder is fixed on the inner wall of the central cavity, and pawls are hinged to the inner wall of the fixed cylinder at equal intervals. The pawls are engaged in the teeth of the ratchet disk, and a second spring is fixedly installed on one side of the pawl and the inner wall of the fixed cylinder.

[0014] The invention is further configured such that a sealing cover is movably provided on the top of the inner wall of the movable cylinder, and two movable grooves are provided on the sealing cover for the movable door-shaped rotating plate to move. An annular sliding groove is provided on the top of the inner wall of the movable cylinder, and a sliding ring inserted into the annular sliding groove is fixed on the outer wall of the sealing cover. The cross-sections of the sliding ring and the annular sliding groove are both designed to be T-shaped.

[0015] The present invention is further configured such that the lifting mechanism includes a threaded column rotatably disposed in the middle position of the support cylinder, and the top of the threaded column is inserted into the interior of the riser. A forward and reverse motor for driving the threaded column to rotate is fixedly installed on the bottom inner wall of the support cylinder. A lifting sleeve is fixed at the bottom of the riser, and the inner wall of the lifting sleeve is screwed to the outer wall of the threaded column.

[0016] The present invention is further configured such that a fixed sleeve is fixedly fitted on the top of the support cylinder and sleeved outside the riser, and multiple guide rods are fixed to the bottom of the fixed sleeve and the bottom inner wall of the support cylinder, and a guide hole is provided on the lifting sleeve for the guide rods to pass through.

[0017] The invention is further configured such that a limiting disk is fixed at the top of the threaded column, and equidistantly distributed balls are rolled around the circumference of the limiting disk and the circumference of the T-shaped platform, with the two sets of balls respectively attached to the inner circumference of the riser and the inner circumference of the movable cylinder.

[0018] The invention is further configured such that the base has an installation groove, and a controller is fixedly installed on the inner wall of the installation groove; a connecting frame is fixedly installed on the top of the mounting base, and an installation hole is opened in the middle of the connecting frame; a vision sensor is fixedly installed on the inner wall of the installation hole; and the vision sensor, the controller, and the forward and reverse motor are electrically connected.

[0019] The present invention is further configured such that an inspection port is provided on one side of the support cylinder, and an inspection cover is fixedly installed on the inner wall of the inspection port, and a plurality of heat dissipation vents are provided on the inspection cover.

[0020] In summary, by adopting the above structure, the present invention has the following advantages compared with the prior art:

[0021] 1. In this invention, the user's position can be identified by a visual sensor on the top of the mounting base. In conjunction with the controller, the forward and reverse motor drives the lifting mechanism to work. The forward and reverse motor drives the threaded column to rotate. With the screw connection between the threaded column and the lifting sleeve, as well as the guiding action of the guide hole and the guide rod, the height of the stand tube and the microphone body can be automatically adjusted. Thus, the microphone height can be flexibly adjusted according to the user's height, sitting posture, standing posture, etc., without the need for manual adjustment of the microphone height. This meets the usage needs of different scenarios, reduces the time wasted on adjusting the microphone during the meeting, and is especially suitable for scenarios where speakers are frequently switched, greatly improving meeting efficiency and making it more widely applicable.

[0022] 2. In this invention, the bearing connection between the longitudinal axis and the center hole of the T-shaped stage allows the central ring to drive the horizontal axis and the gate-shaped rotating plate to rotate around the longitudinal axis, enabling the microphone to rotate flexibly in the horizontal direction and easily accommodate speakers in different positions. At the same time, the engagement relationship between the ratchet disk and the pawl in the corner positioning assembly, when the longitudinal axis drives the microphone to rotate horizontally, prevents reverse backlash after rotation by unidirectionally limiting the teeth of the ratchet disk through the pawl, ensuring reliable horizontal angle fixation and achieving stable and fixed microphone angle adjustment. This effectively prevents angle deviation under external force and solves the problem of microphones easily returning to their original position under the influence of external force in the prior art.

[0023] 3. In this invention, the elevation adjustment component and the toggle component are designed to lower the height of the movable cylinder around the T-shaped platform under the action of the toggle frame within the toggle component. Due to the engagement between the annular groove and the ball, the ball, L-shaped rod, fixed ring, horizontal axis, and gate-shaped rotating plate are simultaneously rotated longitudinally around the central ring, allowing the microphone body to rotate longitudinally around the central ring and achieving vertical elevation adjustment of the microphone. This "horizontal + vertical" dual-axis adjustment mode breaks the limitations of the fixed angle of traditional microphones, accurately adapts to various speaking postures and positions, and achieves all-round angle adjustment of the microphone with strong self-adaptation. At the same time, during the descent of the movable cylinder, the threaded fixed rod is simultaneously driven to descend within the threaded sleeve, thereby using the self-locking property of the threaded structure of the threaded fixed rod and the threaded sleeve to firmly lock the current position during descent, ensuring that the microphone angle does not shift after elevation adjustment and avoiding elevation changes caused by slight collisions or vibrations.

[0024] 4. In this invention, the buffer design of the toggle assembly plays a crucial role in ensuring the smoothness and protection of the adjustment process. When the movable cylinder rises and falls, the telescopic rod between the L-shaped rod and the ball, along with the first spring, constitutes a buffer assembly that absorbs the impact force during adjustment, reducing hard friction and collision wear between components. Furthermore, the sliding contact between the ball and the annular groove smoothly transforms the rising and falling motion of the movable cylinder into the rotational motion of the horizontal axis, making the angle adjustment process smoother and less strenuous, avoiding jamming, and improving the operating feel. In terms of ease of operation, the user only needs to toggle the toggle frame to activate the tilt angle adjustment assembly to achieve tilt angle adjustment, without complicated operations. In addition, the ball bearings and bearing connections of each component reduce the resistance during adjustment, allowing a single person to easily complete the angle adjustment. The flexible operation is especially suitable for scenarios such as meetings where the speaking angle needs to be quickly switched. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a vertical microphone for conferences with adaptive adjustable elevation angle according to the present invention;

[0026] Figure 2 This is a three-dimensional sectional view of a vertical microphone for meetings with an adaptively adjustable elevation angle, according to the present invention.

[0027] Figure 3 This is a schematic diagram of the lifting mechanism structure of a conference vertical microphone with adaptive adjustable elevation angle according to the present invention.

[0028] Figure 4 This is a schematic diagram of the elevation angle adjustment component of a conference vertical microphone with adaptive adjustable elevation angle according to the present invention.

[0029] Figure 5 This is a schematic diagram of the annular groove and annular slide of a conference vertical microphone with adaptive adjustable elevation angle according to the present invention.

[0030] Figure 6 This is a schematic diagram of the horizontal and vertical axes of a conference vertical microphone with adaptively adjustable elevation angle according to the present invention.

[0031] Figure 7 This is a T-shaped cross-sectional view of a conference stand microphone with adaptive adjustable elevation angle according to the present invention.

[0032] Figure 8 This is a schematic diagram of the central hole and central cavity structure of a conference vertical microphone with adaptively adjustable elevation angle according to the present invention;

[0033] Figure 9 This is a schematic diagram of the first spring and telescopic rod structure of a conference vertical microphone with adaptive adjustable elevation angle according to the present invention;

[0034] Figure 10This is a schematic diagram of the corner positioning component structure of a conference vertical microphone with adaptive adjustable elevation angle according to the present invention.

[0035] Explanation of the labels in the diagram:

[0036] 1. Base; 2. Controller; 3. Support cylinder; 4. Fixing sleeve; 5. Riser; 6. Elevation adjustment assembly; 61. T-shaped platform; 62. Movable cylinder; 63. Gate-shaped rotating plate; 64. Annular groove; 65. Threaded sleeve; 66. Threaded fixed rod; 67. Fixing seat; 68. Horizontal axis; 69. Center ring; 610. Fixing ring; 611. Vertical axis; 612. Connecting hole; 613. L-shaped rod; 614. Ball; 615. Center hole; 616. Insertion hole; 617. First spring; 618. Telescopic rod; 7. Mounting seat; 8. Microphone 9. Wind unit; 10. Connecting frame; 11. Vision sensor; 12. Actuating frame; 13. Lifting mechanism; 14. Forward and reverse motor; 15. Threaded column; 16. Lifting sleeve; 17. Guide hole; 18. Guide rod; 19. Inspection cover; 10. Sealing cover; 10. Mounting groove; 11. Limiting plate; 12. Ball bearing; 13. Annular groove; 14. Movable groove; 25. Sliding ring; 26. Corner positioning assembly; 27. Central cavity; 28. Ratchet disc; 29. ​​Fixed cylinder; 20. Pawl; 211. Second spring. Detailed Implementation

[0037] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0038] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] Please see Figures 1-10 This invention provides a vertical microphone for conferences with adaptively adjustable elevation angle, comprising:

[0041] The base 1 has a support cylinder 3 fixedly installed on its top, and a vertical tube 5 is movably installed inside the support cylinder 3.

[0042] Lifting mechanism 12 is installed inside support cylinder 3 and is used to adjust the height of riser 5;

[0043] The microphone body 8 is located on the top of the riser tube 5, and the bottom of the microphone body 8 is fixedly installed with a mounting base 7.

[0044] An elevation adjustment assembly 6 is provided at the bottom of the mounting base 7 and the top of the riser 5. The elevation adjustment assembly 6 includes a T-shaped platform 61 fixedly installed on the top of the riser 5. A central hole 615 is provided at the center of the top of the T-shaped platform 61. A longitudinal shaft 611 is rotatably connected to the inner wall of the central hole 615 via a bearing. A central ring 69 is fixed to the top of the longitudinal shaft 611. A horizontal shaft 68 is rotatably connected to the inner wall of the central ring 69 via a bearing. A gate-shaped rotating plate 63 is fixed to both sides of the outer wall of the horizontal shaft 68. The top of the gate-shaped rotating plate 63 is fixed to the bottom of the mounting base 7. Connecting holes 612 are provided on both sides of the top of the T-shaped platform 61. The inner walls of the connecting holes 612 are connected to the inner walls of the connecting holes 612 via bearings. A threaded sleeve 65 is rotatably connected to the T-shaped platform 61. A movable cylinder 62 is fitted onto the outer wall of the T-shaped platform 61, and fixed seats 67 are fixed on both sides of the inner wall of the movable cylinder 62. A threaded fixed rod 66 is fixedly installed at the bottom end of each fixed seat 67, and the threaded fixed rod 66 is screwed to the threaded sleeve 65. An actuating assembly is provided on the inner wall of the movable cylinder 62 and one end of the horizontal shaft 68. The actuating assembly includes a fixed ring 610 fixed to one end of the horizontal shaft 68, and an L-shaped rod 613 is fixed to one side of the fixed ring 610. A buffer assembly is provided at one end of the L-shaped rod 613, and a ball 614 is provided at one end of the buffer assembly. An annular groove 64 is opened on the inner wall of the movable cylinder 62, and the ball 614 fits into the groove. On the inner wall of the annular groove 64, a toggle bracket 11 is fixed to one side of the bottom of the movable cylinder 62. The buffer assembly includes an insertion hole 616 at one end of the L-shaped rod 613, and a telescopic rod 618 inserted into the insertion hole 616 is fixed to one side of the ball 614. A first spring 617 is fixedly installed at one end of the telescopic rod 618 and one end of the insertion hole 616. The toggle bracket 11 in the toggle assembly drives the movable cylinder 62 to descend outside the T-shaped platform 61. Since the annular groove 64 and the ball 614 form a locking connection, at this time, the ball 614, the L-shaped rod 613, the fixed ring 610, the horizontal shaft 68, and the gate-shaped rotating plate 63 can be driven to rotate longitudinally around the central ring 69, so that the microphone... The microphone body 8 can rotate longitudinally around the central ring 69 to adjust the vertical elevation angle of the microphone. At the same time, the descent of the movable cylinder 62 synchronously drives the threaded fixed rod 66 to descend within the threaded sleeve 65. The self-locking property of the threaded structure of the threaded fixed rod 66 and the threaded sleeve 65 can firmly lock the current position during descent, ensuring that the angle of the microphone body 8 does not shift after elevation adjustment, and avoiding changes in elevation angle caused by slight collisions or vibrations. Furthermore, when the movable cylinder 62 rises and falls, the telescopic rod 618 between the L-shaped rod 613 and the ball 614 and the first spring 617 form a buffer assembly, which can absorb the impact force during adjustment and reduce hard friction and collision wear between components.

[0045] In this invention, a corner positioning assembly 21 is provided at the bottom of the longitudinal shaft 611 and inside the T-shaped platform 61. The corner positioning assembly 21 includes a central cavity 211 opened at the bottom of the central hole 615. A ratchet disk 212 is fixed at the bottom of the longitudinal shaft 611 and inserted into the central cavity 211. A fixing cylinder 213 is fixed on the inner wall of the central cavity 211, and pawls 214 are hinged to the inner wall of the fixing cylinder 213 at equal intervals. The pawls 214 are engaged in the teeth of the ratchet disk 212, and one side of the pawl 214 is connected to the fixing cylinder. A second spring 215 is fixedly installed on the inner wall of 213. The pawl 214 is engaged in the teeth of the ratchet disk 212 under the action of the second spring 215, forming a one-way limit. When the longitudinal axis 611 drives the microphone body 8 to rotate horizontally, the pawl 214 will restrict the ratchet disk 212 to rotate in the opposite direction, ensuring that the horizontal angle adjustment will not be reversed due to external force, realizing the stable fixation of the microphone angle adjustment, effectively preventing angle deviation under the action of external force, and solving the problem of the microphone easily returning to its original position under the influence of external force in the prior art.

[0046] In this invention, a sealing cover 14 is movably disposed on the top of the inner wall of the movable cylinder 62, and two movable grooves 19 for the door-shaped rotating plate 63 to move on the sealing cover 14. An annular sliding groove 18 is formed on the top of the inner wall of the movable cylinder 62, and a sliding ring 20 inserted into the annular sliding groove 18 is fixed on the outer wall of the sealing cover 14. The cross-sections of the sliding ring 20 and the annular sliding groove 18 are both designed to be T-shaped. Covering the top of the inner wall of the movable cylinder 62 with the sealing cover 14 can effectively prevent external dust, moisture, debris, etc. from entering the interior of the elevation angle adjustment component 6, thus avoiding affecting the rotation of the elevation angle adjustment component 6. The smoothness during movement helps maintain its long-term stable working state. In addition, the sliding ring 20 and the annular groove 18 ensure the firmness of the connection between the sealing cover 14 and the movable cylinder 62. It also ensures that the sealing cover 14 always moves synchronously with the movable cylinder 62 when the cylinder is raised and lowered, without hindering the normal operation of the movable cylinder 62. At the same time, the movable groove 19 provides a space for the gate-shaped rotating plate 63 to move, avoiding interference from the sealing cover 14 on the movement of the gate-shaped rotating plate 63, and ensuring that the adjustment function of the elevation angle adjustment component 6 is not affected.

[0047] In this invention, the lifting mechanism 12 includes a threaded post 122 rotatably disposed in the middle of the support cylinder 3, with the top of the threaded post 122 inserted into the interior of the riser 5. A forward and reverse motor 121 for driving the threaded post 122 to rotate is fixedly installed on the bottom inner wall of the support cylinder 3. A lifting sleeve 123 is fixedly fixed to the bottom of the riser 5, and the inner wall of the lifting sleeve 123 is screwed to the outer wall of the threaded post 122. A fixing sleeve 4 is fixedly fixed to the top of the support cylinder 3 and sleeved on the outside of the riser 5, with the bottom of the fixing sleeve 4 connected to the support cylinder. Multiple guide rods 125 are fixed to the bottom inner wall of the 3. A guide hole 124 is opened on the lifting sleeve 123 for the guide rods 125 to pass through. A limit plate 16 is fixed to the top of the threaded column 122. The circumference of the limit plate 16 and the circumference of the T-shaped platform 61 are both rolled with equally distributed balls 17. The two sets of balls 17 are respectively attached to the inner circumference of the riser 5 and the inner circumference of the movable cylinder 62. A mounting groove 15 is opened on the base 1, and a controller 2 is fixedly installed on the inner wall of the mounting groove 15. Mounting seat 7 A connecting frame 9 is fixed to the top of the microphone body 8, and a mounting hole is provided in the middle of the connecting frame 9. A visual sensor 10 is fixedly installed on the inner wall of the mounting hole. The visual sensor 10, the controller 2, and the forward and reverse motor 121 are electrically connected. The visual sensor 10 identifies the user's position and transmits the identification signal to the controller 2. The controller 2 then works in conjunction with the lifting mechanism 12. The forward and reverse motor 121 in the lifting mechanism 12 drives the threaded column 122 in the support cylinder 3 to rotate. Since the threaded column 122 is screwed to the lifting sleeve 123 at the bottom of the upright tube 5, and the lifting sleeve 123 slides along the guide rod 125 between the fixed sleeve 4 and the support cylinder 3 through the guide hole 124, the rotation of the threaded column 122 will drive the lifting sleeve 123 and the upright tube 5 to rise and fall along the guide rod 125, thereby driving the microphone body 8 to adjust its height. When the visual sensor 10 locates the user's mouth, the controller 2 controls the lifting mechanism 12 to stop, thus achieving automatic height adjustment of the microphone body 8 to adapt to different users' heights or postures.

[0048] In this invention, a maintenance port is provided on one side of the support cylinder 3, and a maintenance cover 13 is fixedly installed on the inner wall of the maintenance port. Multiple heat dissipation vents are provided on the maintenance cover 13. By using the maintenance cover 13 and heat dissipation vents on the support cylinder 3, it is convenient to inspect and maintain the internal components, and it can also dissipate heat for components such as the forward and reverse motor 121, ensuring long-term stable operation of the equipment.

[0049] In summary, the working principle of this invention is as follows: During use, the visual sensor 10 on the top connecting bracket 9 of the mounting base 7 identifies the user's position and transmits the identification signal to the controller 2 in the mounting slot 15 of the base 1. The controller 2 works in conjunction with the lifting mechanism 12 at the bottom of the support cylinder 3. The forward and reverse motor 121 in the lifting mechanism 12 drives the threaded column 122 in the support cylinder 3 to rotate. Since the threaded column 122 is screwed to the lifting sleeve 123 at the bottom of the upright tube 5, and the lifting sleeve 123 slides along the guide rod 125 between the fixed sleeve 4 and the support cylinder 3 through the guide hole 124, the rotation of the threaded column 122 will drive the lifting sleeve 123 and the upright tube 5 to rise and fall along the guide rod 125, thereby driving the microphone body 8 to adjust its height. When the visual sensor 10 locates the user's mouth, the controller 2 controls the lifting mechanism 12 to stop, thus achieving automatic adjustment of the height of the microphone body 8 to adapt to different users' heights or postures.

[0050] When the microphone body 8 reaches a certain position, the central hole 615 at the top of the T-shaped platform 61 is connected to the longitudinal axis 611 via a bearing. The central ring 69 fixed at the top of the longitudinal axis 611 can rotate around the central hole 615 with the longitudinal axis 611. The horizontal axis 68 inside the central ring 69 is connected to the mounting base 7 via a gate-shaped rotating plate 63. Therefore, during use, the user can manually adjust the microphone body 8 to rotate horizontally around the central hole 615 with the longitudinal axis 611, thereby adjusting the horizontal angle of the microphone body 8 and ensuring that the microphone body 8 reaches the accurate position. At the same time, the ratchet disk 212 at the bottom of the longitudinal axis 611 is located in the central cavity 211 of the T-shaped platform 61. In the fixed cylinder 213 on the inner wall of the central cavity 211, the pawl 214 engages with the teeth of the ratchet disk 212 under the action of the second spring 215, forming a one-way limit. When the longitudinal axis 611 drives the microphone body 8 to rotate horizontally, the pawl 214 will restrict the ratchet disk 212 from rotating in the opposite direction, ensuring that the horizontal angle will not retract due to external force after adjustment, thus achieving stable angle fixation.

[0051] Next, the user can move the lever 11 at the bottom of the movable tube 62, causing the movable tube 62 to descend outside the T-shaped platform 61. Since the annular groove 64 and the ball 614 are engaged, the ball 614, L-shaped rod 613, fixed ring 610, horizontal axis 68 and gate-shaped rotating plate 63 can be driven to rotate longitudinally around the central ring 69, so that the microphone body 8 can rotate longitudinally around the central ring 69, realizing the vertical elevation angle adjustment of the microphone; at the same time, during the descent of the movable tube 62, the threaded fixed rod 66 is driven to descend inside the threaded sleeve 65. When the microphone body 8 is lowered, the self-locking property of the threaded structure of the threaded rod 66 and the threaded sleeve 65 is used to firmly lock the current position during the descent, ensuring that the angle of the microphone body 8 does not deviate after the elevation angle is adjusted, avoiding changes in the elevation angle caused by slight collisions or vibrations, so that the microphone body 8 can be accurately aligned with the user's mouth position; and when the movable cylinder 62 is raised or lowered, the telescopic rod 618 between the L-shaped rod 613 and the ball 614 and the first spring 617 form a buffer assembly, which can absorb the impact force during adjustment and reduce hard friction and collision wear between components.

[0052] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A vertical microphone for conferences with adaptively adjustable elevation angle, characterized in that, include: The base (1) has a support cylinder (3) fixedly installed on its top, and a vertical tube (5) is movably installed inside the support cylinder (3). A lifting mechanism (12) is installed inside the support cylinder (3) and is used to adjust the height of the riser (5); Microphone body (8), the microphone body (8) is disposed on the top of the riser (5), and a mounting base (7) is fixedly installed on the bottom of the microphone body (8); An elevation adjustment assembly (6) is provided at the bottom of the mounting base (7) and the top of the riser (5). The elevation adjustment assembly (6) includes a T-shaped platform (61) fixedly installed on the top of the riser (5). A central hole (615) is provided at the middle of the top of the T-shaped platform (61). A longitudinal shaft (611) is rotatably connected to the inner wall of the central hole (615) through a bearing. A central ring (69) is fixed at the top of the longitudinal shaft (611). A horizontal shaft (68) is rotatably connected to the inner wall of the central ring (69) through a bearing. A gate-shaped rotating plate (63) is fixed on both sides of the outer wall of the horizontal shaft (68). The top of the T-shaped platform (61) is fixed to the bottom of the mounting base (7). Both sides of the top of the T-shaped platform (61) are provided with connecting holes (612), and the inner walls of the connecting holes (612) are rotatably connected with threaded sleeves (65) through bearings. The outer wall of the T-shaped platform (61) is fitted with a movable cylinder (62), and both sides of the inner wall of the movable cylinder (62) are fixed with fixed seats (67). One bottom end of the fixed seat (67) is fixedly installed with a threaded fixed rod (66), and the threaded fixed rod (66) is screwed to the threaded sleeve (65). The inner wall of the movable cylinder (62) and one end of the horizontal shaft (68) are provided with a toggle assembly.

2. A conference standing microphone with adaptively adjustable elevation angle according to claim 1, characterized in that, The actuating assembly includes a fixing ring (610) fixed to one end of the horizontal shaft (68), and an L-shaped rod (613) fixed to one side of the fixing ring (610). A buffer assembly is provided at one end of the L-shaped rod (613), and a ball (614) is provided at one end of the buffer assembly. An annular groove (64) is provided on the inner wall of the movable cylinder (62), and the ball (614) fits against the inner wall of the annular groove (64). An actuating frame (11) is fixed to one side of the bottom of the movable cylinder (62).

3. A conference standing microphone with adaptively adjustable elevation angle according to claim 2, characterized in that, The buffer assembly includes a socket (616) at one end of an L-shaped rod (613), and a telescopic rod (618) inserted into the socket (616) is fixed on one side of the ball (614). A first spring (617) is fixedly installed at one end of the telescopic rod (618) and at one end of the socket (616).

4. A conference standing microphone with adaptively adjustable elevation angle according to claim 1, characterized in that, A corner positioning assembly (21) is provided at the bottom of the longitudinal shaft (611) and inside the T-shaped platform (61). The corner positioning assembly (21) includes a central cavity (211) opened at the bottom of the central hole (615). A ratchet disc (212) is fixed at the bottom of the longitudinal shaft (611) and inserted into the central cavity (211). A fixing cylinder (213) is fixed on the inner wall of the central cavity (211). Pads (214) are hinged to the inner wall of the fixing cylinder (213) at equal intervals. The pawls (214) are engaged in the teeth of the ratchet disc (212). A second spring (215) is fixedly installed on one side of the pawl (214) and the inner wall of the fixing cylinder (213).

5. A conference standing microphone with adaptively adjustable elevation angle according to claim 1, characterized in that, A sealing cover (14) is movably provided on the top of the inner wall of the movable cylinder (62), and two movable grooves (19) for the door-shaped rotating plate (63) to move are provided on the sealing cover (14). An annular sliding groove (18) is provided on the top of the inner wall of the movable cylinder (62), and a sliding ring (20) inserted into the annular sliding groove (18) is fixed on the outer wall of the sealing cover (14). The cross-sections of the sliding ring (20) and the annular sliding groove (18) are both designed as T-shaped.

6. A conference standing microphone with adaptively adjustable elevation angle according to claim 5, characterized in that, The lifting mechanism (12) includes a threaded column (122) rotatably disposed in the middle of the support cylinder (3), and the top of the threaded column (122) is inserted into the inside of the riser (5). A forward and reverse motor (121) for driving the threaded column (122) to rotate is fixedly installed on the bottom inner wall of the support cylinder (3). A lifting sleeve (123) is fixed at the bottom of the riser (5), and the inner wall of the lifting sleeve (123) is screwed to the outer wall of the threaded column (122).

7. A vertical microphone for conferences with adaptively adjustable elevation angle according to claim 6, characterized in that, The top of the support cylinder (3) is fixed with a fixed sleeve (4) sleeved outside the riser (5), and the bottom of the fixed sleeve (4) and the bottom inner wall of the support cylinder (3) are fixed with multiple guide rods (125). The lifting sleeve (123) is provided with guide holes (124) for the guide rods (125) to pass through.

8. A conference standing microphone with adaptively adjustable elevation angle according to claim 7, characterized in that, The top of the threaded column (122) is fixed with a limiting plate (16), and the circumference of the limiting plate (16) and the circumference of the T-shaped platform (61) are both rolled with equally distributed balls (17), and the two sets of balls (17) are respectively attached to the inner circumference of the riser (5) and the inner circumference of the movable cylinder (62).

9. A conference standing microphone with adaptively adjustable elevation angle according to claim 6, characterized in that, The base (1) has an installation groove (15) and a controller (2) is fixedly installed on the inner wall of the installation groove (15). The top of the mounting base (7) is fixedly equipped with a connecting frame (9) and an installation hole is opened in the middle of the connecting frame (9). A vision sensor (10) is fixedly installed on the inner wall of the installation hole. The vision sensor (10), the controller (2) and the forward and reverse motor (121) are electrically connected.

10. A conference standing microphone with adaptively adjustable elevation angle according to claim 1, characterized in that, The support cylinder (3) has an inspection port on one side, and an inspection cover (13) is fixedly installed on the inner wall of the inspection port. The inspection cover (13) has multiple heat dissipation holes.

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