Light remote horn for unmanned aerial vehicle

Abstract

A connecting flange of a rear bowl penetrates through a screw from the lower end face and is connected with the bottom of a large barrel in a locking mode through the outer side edge of a ventilation barrel, an inner hole of the ventilation barrel is downwards connected with a phase plug in a pressing mode, a voice diaphragm is arranged below the phase plug, and a supporting ring on the periphery of the phase plug is connected with the horizontal edge of the voice diaphragm in a pressing mode and supported on a gasket. The gasket is pressed on the polar plate, the polar plate is supported on the step structure of the U iron through the magnetic steel, a circle of multiple connecting holes are formed in the ventilation cylinder around the circumference, the connecting holes are downwards connected with screws in a penetrating mode, the screws sequentially penetrate through the gasket, the polar plate, the magnetic steel and the step structure to be locked and connected with the U iron, and the voice coil of the voice diaphragm is arranged between the polar plate and the outer wall of the central column structure of the U iron. The loudspeaker is compact in structure, and can effectively meet the use requirements of volume, broadband and light weight.

Description

Technical Field

[0001] The utility model relates to a loudspeaker, in particular to a lightweight long-range loudspeaker for unmanned aerial vehicles (UAVs). Background Art

[0002] With the maturity of UAV technology, the requirements for the loudspeakers configured thereon are gradually developing towards broadband and long-range. The traditional long-range loudspeaker uses a U-shaped iron to support the magnet, pole plate, and diaphragm, resulting in a relatively large volume and weight of the loudspeaker, which has limitations in the lightweight use of UAVs. Summary of the Invention

[0003] The utility model provides a lightweight long-range loudspeaker for UAVs with a compact structure, effectively taking into account the volume, broadband, and lightweight characteristics.

[0004] The technical solution adopted by the utility model is as follows: A lightweight long-range loudspeaker for UAVs includes a large cylinder, a rear bowl, a U-shaped iron, a magnet, a pole plate, a phase plug, and a connecting frame. The two ends of the connecting frame are symmetrically connected to both sides of the large cylinder. It is characterized in that: The upper end surface of the connecting flange of the rear bowl supports the outer edge of the ventilation cylinder through a sealing ring. The lower outer wall of the large cylinder supports on the upper end surface of the connecting flange of the rear bowl. The connecting flange of the rear bowl passes through a screw from the lower end surface and locks and connects the bottom of the large cylinder through the outer edge of the ventilation cylinder. The center of the ventilation cylinder communicates upward with an inverted conical inner cylinder. A middle cylinder that is installed with a gap and supports on the bottom of the large cylinder is installed on the inverted conical inner cylinder with a gap. The inner hole of the ventilation cylinder presses the phase plug downward. A diaphragm is arranged under the phase plug, and the support ring on the outer periphery of the phase plug presses the horizontal edge of the diaphragm and supports on a gasket. The gasket presses on the pole plate. The U-shaped iron includes a central column structure and a circle of stepped structures connected to the outer periphery of the central column. The pole plate is supported on the stepped structure of the U-shaped iron through the magnet. A circle of multiple connecting holes is arranged around the circumference of the ventilation cylinder. The connecting holes pass through screws downward and sequentially pass through the gasket, the pole plate, the magnet, and the stepped structure to lock and connect the U-shaped iron. The voice coil of the diaphragm is arranged between the pole plate and the outer wall of the central column structure.

[0005] A sound splitting head that protrudes coaxially towards the inner cylinder is arranged on the top of the middle cylinder.

[0006] A wiring hole is opened on the bottom surface of the rear bowl, and a switched reluctance circuit and a transformer are supported and arranged on the lower bottom inside the rear bowl.

[0007] The central column structure is arranged as an inner sunken hole structure corresponding to the lower part of the diaphragm.

[0008] The middle cylinder is a conical structure with a cone shape opposite to that of the inner cylinder.

[0009] The gasket is made of the same material as the phase plug.

[0010] A limiting retaining ring is connected downward in the middle of the ventilation cylinder, and the limiting retaining ring abuts against the pole plate between the inner wall of the central column structure.

[0011] The sealing ring is an explosion-proof sealing ring.

[0012] The beneficial effects of the present utility model are as follows: By using an air vent cylinder to hang and connect the U-shaped iron, the structure of the traditional U-shaped iron that supports the magnet, pole plate, and sound film with the inner ring is modified to a structure that supports with the stepped structure on the outer ring of the U-shaped iron. On the basis of meeting the size of the sound film, the circumferential dimension of the rear bowl is reduced, meeting the requirements of small volume and light weight for the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0014] Figure 2 is Figure 1 an enlarged view of part A in

[0015] In the figure: connecting frame 1, large cylinder 2, middle cylinder 3, sound splitting head 4, inner cylinder 5, air vent cylinder 6, limit retaining ring 7, connecting hole 8, rear bowl 9, connecting flange 10, wiring hole 11, switched reluctance 12, transformer 13, U-shaped iron 14, central column structure 15, stepped structure 16, magnet 17, pole plate 18, gasket 19, sound film 20, horizontal edge 21, voice coil 22, phase plug 23, support ring 24, sealing ring 25. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The following is further described with reference to the accompanying drawings.

[0017] Figure 1 , 2 As shown in

[0018] : A lightweight long-range loudspeaker for a drone includes a connecting frame 1, a large cylinder 2, a middle cylinder 3, a sound splitting head 4, an inner cylinder 5, an air vent cylinder 6, a limit retaining ring 7, a connecting hole 8, a rear bowl 9, a connecting flange 10, a wiring hole 11, a switched reluctance 12, a transformer 13, a U-shaped iron 14, a central column structure 15, a stepped structure 16, a magnet 17, a pole plate 18, a gasket 19, a sound film 20, a horizontal edge 21, a voice coil 22, a phase plug 23, and a support ring 24.

[0019] The phase plug 23 is press-fitted into the inner hole of the vent tube 6. A sounding film 20 is provided below the phase plug 23, and the outer peripheral support ring 24 of the phase plug 23 presses the horizontal side 21 of the sounding film 2 against the gasket 19, and the gasket 19 is press-fitted onto the electrode plate 18. The U-shaped iron includes a central column structure and a ring of stepped structures connected to the outer periphery of the central column. The electrode plate is press-fitted onto the magnet 17 via the magnet electrode plate 18 below the electrode plate. The magnet 18 is supported on the outer periphery of the central column structure 15 of the U-shaped iron 14. A stepped structure 16 is provided on the outer periphery of the central column structure 15, and the magnet 17 is supported on the stepped structure 16. A plurality of connection holes 8 are provided in a circle around the circumference of the vent tube 6. The connection holes 8 are downwardly penetrated by screws through the gasket, the electrode plate, the magnet, and the stepped structure in sequence to lock and connect the U-shaped iron 14. A limit retaining ring 7 is connected downward in the middle of the vent tube 6, and the limit retaining ring 7 abuts against the outer wall of the electrode plate 18 between the inner side and the outer wall of the central column structure 15. The voice coil 22 of the sounding film 20 is arranged between the electrode plate 18 and the outer wall of the central column structure 15.

[0020] In this embodiment, the central column structure is arranged as an inner sunken hole structure corresponding to the lower part of the sounding film.

[0021] On the basis of this embodiment, the gasket is preferably made of the same material as the phase plug.

[0022] On the basis of this embodiment, the sealing ring is preferably an explosion-proof sealing ring.

[0023] On the basis of this embodiment, an adjustment shim ring can also be provided between the electrode plate and the limit retaining ring. The adjustment shim ring is preferably made of the same material as the gasket.

Claims

1. A lightweight remote speaker for drones, comprising a large tube, a rear bowl, a U iron, a magnet, a pole plate, a phase plug and a connecting frame, wherein the two ends of the connecting frame are symmetrically connected to the two sides of the large tube, characterized in that: The upper end face of the connecting flange of the rear bowl supports the outer edge of the breather cylinder through a sealing ring, and the lower outer wall of the large cylinder is supported on the upper end face of the connecting flange of the rear bowl, and the connecting flange of the rear bowl is connected to the bottom of the large cylinder through the outer edge of the breather cylinder with screws from the lower end face, and the center of the breather cylinder is connected to the inverted cone inner cylinder upward, and the gap cover on the inverted cone inner cylinder is supported on the middle cylinder at the bottom of the large cylinder, and the inner hole of the breather cylinder is crimped downward with a phase plug, and a sound membrane is arranged under the phase plug, and the outer peripheral support ring of the phase plug is crimped with the horizontal edge of the sound membrane and supported on the gasket, and the gasket is crimped on the pole plate, and the U-iron includes a center column structure and a circle of step structures connected to the outer periphery of the center column, and the pole plate is supported on the step structure of the U-iron through magnetic steel, and a circle of multiple connecting holes is arranged around the circumference of the breather cylinder, and the connecting holes are connected with screws downward through the gasket, the pole plate, the magnetic steel, and the step structure in turn to lock and connect the U-iron, and the voice coil of the sound membrane is arranged between the pole plate and the outer wall of the center column structure.

2. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The middle tube is provided with a sound dividing head coaxially protruding toward the inner tube on the top.

3. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: A wiring hole is arranged on the bottom surface of the rear bowl, and a switch magnetic circuit and a transformer are arranged on the lower bottom support in the rear bowl.

4. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The central column structure is arranged as an inner countersunk hole structure corresponding to the lowering of the sound membrane.

5. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The middle cylinder is a conical structure opposite to the conical shape of the inner cylinder.

6. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The gasket and the phase plug are made of the same material.

7. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The middle part of the vent cylinder is downwardly connected to a limit retaining ring, and the limit retaining ring is inwardly abutted against the pole plate against the outer wall of the central column structure.

8. The lightweight remote speaker for an unmanned aerial vehicle according to claim 1 is characterized by: The sealing ring is a flameproof sealing ring.

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