Closed ceiling sound box

Abstract

The utility model discloses a closed ceiling sound box, which comprises a sound box seat body, a sound box shell, a metal net, a metal frame, a damper, a magnetic circuit system and a horn assembly, the sound box seat body is of a circular ring structure, and only a through hole in the ring is communicated between two end surfaces; the sound box shell and the metal net are respectively mounted on the back surface and the front surface of the sound box seat body, and the periphery of the metal net covers the peripheral surface of the sound box seat body; the metal basin frame is arranged in the sound box shell and is relatively fixed with the back surface of the sound box seat body; the damper is arranged in the metal frame; the magnetic circuit system is installed at the bottom of the metal basin stand. The horn assembly is arranged in the metal basin frame, passes through the through hole and the damper, and is electrically connected with the magnetic circuit system. According to the utility model, the design of an air duct is canceled, the closed sound box is integrally formed, no other airflow is generated except the sound energy of the horn assembly, no wind noise or airflow is generated in the peripheral direction of the sound box seat body, the sound energy released by the sound box is not interfered, the purpose of noise reduction is achieved, and the sound quality of the ceiling sound box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceiling speakers, in particular to a closed ceiling speaker. Background Art

[0002] Ceiling speakers are a type of audio equipment installed on the ceiling and are commonly used in various places such as shopping malls, supermarkets, milk tea shops, etc. Their design allows sound to be evenly distributed in the space, creating an immersive auditory experience.

[0003] Ceiling speakers are different from conventional floor-standing speakers. Their volume is usually relatively small, so the volume of internal components is limited, and the overall power is also relatively small. To achieve the purpose of outputting a larger volume with a smaller power, in the prior art, air ducts are designed on the outer shell of the ceiling speaker, and the bass dive is increased by adjusting the size of the air ducts. However, in the actual use process, the bass energy is released together with the air flow in the air duct, which will cause distortion of the bass sound quality and there is a relatively large noise. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a closed ceiling speaker, solve the problems existing in the prior art, realize the noise reduction of the ceiling speaker, improve the sound quality, and optimize the user experience.

[0005] To achieve the above purpose, the solution of the utility model is:

[0006] A closed ceiling speaker, comprising a speaker base, a speaker housing, a metal mesh, a metal chassis, a spider, a magnetic circuit system, and a horn assembly; the speaker base is a circular ring structure, and only a through hole inside the ring is communicated between its two end faces; the speaker housing and the metal mesh are respectively installed on the back and front of the speaker base, and the periphery of the metal mesh is wrapped on the peripheral surface of the speaker base; the metal chassis is arranged inside the speaker housing and is relatively fixed to the back of the speaker base; the spider is arranged inside the metal chassis; the magnetic circuit system is installed at the bottom of the metal chassis; the horn assembly is arranged inside the metal chassis and passes through the through hole and the spider, and is electrically connected to the magnetic circuit system.

[0007] The magnetic circuit system includes a first magnetic conductive plate, a magnet, and a second magnetic conductive plate stacked in sequence; the first magnetic conductive plate is fixedly connected to the bottom of the metal chassis; the second magnetic conductive plate is provided with a convex shaft, and the convex shaft sequentially passes through the magnet, the first magnetic conductive plate, and the bottom of the metal chassis; the horn assembly is in contact with the convex shaft.

[0008] Preferably, the horn assembly includes a bass horn and a treble horn, the bass horn passes through the spider, and the treble horn passes through the through hole.

[0009] Preferably, the tweeter horn is made of a tweeter aluminum plate.

[0010] The through hole is trumpet-shaped, and the aperture of one end of the through hole facing the metal mesh is larger.

[0011] A circle of mounting ring groove is arranged on the back of the speaker seat body, and a circle of mounting flange is arranged on the periphery of the metal basin frame, and the mounting flange is embedded in the mounting ring groove.

[0012] A step portion is arranged in the metal basin frame, and the periphery of the wave damper is fixedly connected to the step portion.

[0013] The circumferential surface of the speaker shell is provided with a plurality of snap-in grooves; the back of the speaker base is provided with a rotating shaft opposite to the snap-in groove, and a snap-in piece is provided at the end of the rotating shaft; the rotating shaft passes through the snap-in groove in the corresponding direction so that the snap-in piece can be rotated and snap-fitted in the snap-in groove.

[0014] After adopting the above technical solution, the utility model has the following technical effects:

[0015] The utility model eliminates the design of the air duct, and the speaker base has no through structure except for the through hole in the middle that makes way for the horn assembly, so that the speaker base, the speaker shell and the metal mesh form a "fully enclosed" space. No other airflow is generated except for the sound energy emitted by the horn assembly, that is, no wind noise and airflow are generated in the peripheral direction of the speaker base, which will not interfere with the sound energy released by the speaker, thereby achieving the purpose of noise reduction and improving the sound quality of the ceiling speaker. In the supporting design, the magnetic circuit system with higher magnetic force can be selected to improve the overall control of the speaker, improve the sound efficiency and sensitivity, and achieve the fidelity of the sound quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a specific embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a specific embodiment of the utility model;

[0018] Figure 3 It is a partial structural exploded view of a specific embodiment of the utility model;

[0019] Description of Figure Numbers:

[0020] 1-speaker base; 11-through hole; 12-mounting ring groove; 13-rotating shaft; 14-clamping piece; 2-speaker shell; 21-clamping groove; 3-metal mesh; 4-metal basin frame; 41-mounting flange; 5-elastic wave; 6-first magnetic conductive plate; 7-magnet; 8-second magnetic conductive plate; 81-convex shaft; 9-bass horn; 10-treble horn. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0022] refer to Figures 1-3 As shown, the utility model discloses a closed ceiling speaker, including a speaker base 1, a speaker shell 2, a metal mesh 3, a metal basin frame 4, a spring 5, a magnetic circuit system and a horn assembly;

[0023] The speaker base 1 is a circular ring structure, and its two end surfaces are connected only by a through hole 11 in the ring;

[0024] The speaker housing 2 and the metal mesh 3 are respectively installed on the back and front of the speaker base 1, and the periphery of the metal mesh 3 is covered on the periphery of the speaker base 1;

[0025] The metal basin frame 4 is arranged in the speaker housing 2 and fixed relatively to the back side of the speaker base 1;

[0026] The spring wave 5 is arranged in the metal basin frame 4;

[0027] The magnetic circuit system is installed at the bottom of the metal basin frame 4;

[0028] The horn assembly is disposed in the metal frame 4 and penetrates through the through hole 11 and the spider 5 , and is electrically connected to the magnetic circuit system.

[0029] Through the above scheme, the utility model cancels the design of the air duct, and the speaker base 1 no longer has a through structure except for the through hole 11 in the middle that makes way for the horn assembly, so that the speaker base 1, the speaker shell 2 and the metal mesh 3 form a "fully enclosed" space. No other airflow is generated except the sound energy emitted by the horn assembly, that is, no wind noise and airflow are generated in the peripheral direction of the speaker base 1, and no interference is caused to the sound energy released by the speaker, thereby achieving the purpose of noise reduction and improving the sound quality of the ceiling speaker; in the supporting design, the overall control of the speaker can be improved by selecting a magnetic circuit system with higher magnetic force, the sound enhancement efficiency and sensitivity can be improved, and the fidelity of the sound quality can be achieved.

[0030] Specific embodiments of the present utility model are shown below.

[0031] The magnetic circuit system includes a first magnetic conductive plate 6, a magnet 7 and a second magnetic conductive plate 8 stacked in sequence; the first magnetic conductive plate 6 is fixedly connected to the bottom of the metal basin frame 4; the second magnetic conductive plate 8 is provided with a convex shaft 81, which is sequentially passed through the magnet 7, the first magnetic conductive plate 6 and the bottom of the metal basin frame 4; the horn assembly is in contact with the convex shaft 81. The first magnetic conductive plate 6 and the second magnetic conductive plate 8 are both used for magnetic conductivity, and the two form the S (-) pole and the N (+) pole of the magnetic circuit respectively; and the magnet 7 is used to provide magnetic field power.

[0032] Furthermore, the above horn assembly includes a bass horn 9 and a treble horn 10. The bass horn 9 is passed through the surround 5, and the treble horn 10 is passed through the through hole 11.

[0033] Secondly, the above treble horn 10 is made of a treble aluminum plate.

[0034] The above through hole 11 is trumpet-shaped, and the aperture of the end of the through hole 11 facing the metal mesh 3 is larger, which can increase the diffusion range of the sound wave energy.

[0035] An installation ring groove 12 is provided on the back surface of the above speaker base 1. A mounting flange 41 is provided on the periphery of the metal frame 4. The mounting flange 41 is embedded in the installation ring groove 12 and fixed by screwing or welding to realize the installation of the metal frame 4 on the speaker base 1.

[0036] A stepped portion 42 is provided inside the above metal frame 4. The periphery of the surround 5 is fixedly connected to the stepped portion 42. In this embodiment, the periphery of the surround 5 is connected to the stepped portion 42 by gluing to keep it relatively fixed to the stepped portion 42.

[0037] A plurality of clamping grooves 21 are provided on the peripheral surface of the above speaker housing 2; a rotating shaft 13 opposite to the clamping grooves 21 is provided on the back surface of the speaker base 1, and a clamping member 14 is provided at the end of the rotating shaft 13; the rotating shaft 13 passes through the corresponding clamping grooves 21 in the corresponding direction so that the clamping member 14 is rotationally clamped in the clamping grooves 21 to realize the quick disassembly and assembly of the speaker housing 2 and the speaker base 1.

[0038] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A closed ceiling speaker, characterized in that: It includes a speaker base, a speaker housing, a metal mesh, a metal basket, a spider, a magnetic circuit system and a horn assembly; The speaker base is of a circular ring structure, and there is only a through hole inside the ring communicating between its two end faces; The speaker housing and the metal mesh are respectively installed on the back and front of the speaker base, and the periphery of the metal mesh is wrapped on the peripheral surface of the speaker base; The metal basket is arranged inside the speaker housing and is fixedly opposed to the back of the speaker base; The spider is arranged inside the metal basket; The magnetic circuit system is installed at the bottom of the metal basket; The horn assembly is arranged inside the metal basket and passes through the through hole and the spider, and is electrically connected to the magnetic circuit system.

2. The closed ceiling speaker according to claim 1, characterized in that: The magnetic circuit system includes a first magnetic conductive plate, a magnet and a second magnetic conductive plate stacked in sequence; the first magnetic conductive plate is fixedly connected to the bottom of the metal basket; the second magnetic conductive plate is provided with a convex shaft, and the convex shaft passes through the magnet, the first magnetic conductive plate and the bottom of the metal basket in sequence; the horn assembly contacts the convex shaft.

3. The closed ceiling speaker according to claim 2, characterized in that: The horn assembly includes a bass horn and a treble horn, the bass horn passes through the spider, and the treble horn passes through the through hole.

4. The closed ceiling speaker according to claim 3, characterized in that: The treble horn is made of high-frequency aluminum plate.

5. The closed ceiling speaker according to claim 1, characterized in that: The through hole is in a horn shape, and the aperture of the end of the through hole facing the metal mesh is larger.

6. The closed ceiling speaker according to claim 1, characterized in that: A mounting ring groove is provided on the back of the speaker base, and a mounting flange is provided on the periphery of the metal basket, and the mounting flange is embedded in the mounting ring groove.

7. The closed ceiling speaker according to claim 1, characterized in that: A stepped portion is provided inside the metal basket, and the periphery of the spider is fixedly connected to the stepped portion.

8. The closed ceiling speaker according to claim 1, characterized in that: A plurality of clamping grooves are provided on the peripheral surface of the speaker housing; a rotating shaft opposite to the clamping grooves is provided on the back of the speaker base, and a clamping member is provided at the end of the rotating shaft; the rotating shaft passes through the corresponding clamping groove so that the clamping member is rotationally clamped in the clamping groove.

Images