CN205051868U

CN205051868U - Magnetic circuit of horn loudspeaker

Info

Publication number: CN205051868U
Application number: CN201520828658.1U
Authority: CN
Inventors: 崔玉良; 张向龙
Original assignee: TIANJIN HONGBO ELECTRONICS GROUP CO Ltd
Current assignee: TIANJIN HONGBO ELECTRONICS GROUP CO Ltd
Priority date: 2015-10-23
Filing date: 2015-10-23
Publication date: 2016-02-24
Anticipated expiration: 2025-10-23

Abstract

The utility model discloses a magnetic circuit of horn loudspeaker, including the hypoplastron, the fixed cylindrical guiding core who sets up at the hypoplastron center closely arranges ground and sets up guiding core ring week and bottom with hypoplastron fixed connection's a plurality of cylindrical magnet steel, with magnet steel fixed connection's last crown plate, ring week with upper plate ring fixed connection's vibrating diaphragm, set up in the clearance between upper plate ring and magnetic core and upper end and vibrating diaphragm fixed connection's voice coil loudspeaker voice coil. The utility model discloses an operculum laryngis be ball top surface shape, simplified its shape, can directly form with in sheet, compare in the casting and has reduced the post processing step, greatly reduced manufacturing cost, the steady quality is controllable in addition, when changing the operculum laryngis, the radian of the cavity structures's of corresponding adjustment throat taps internal surface can be realized, has overcome traditional thinking, has reduced overall cost under the prerequisite of guaranteeing tone quality.

Description

The magnetic circuit system of horn speaker

Technical field

The utility model relates to loudspeaker techniques field, particularly relates to a kind of magnetic circuit system of horn speaker of horn speaker.

Background technology

Horn speaker has high directivity, and power is large, and the advantage that efficiency is high, is therefore widely used in the occasions such as meeting-place, field, wide open country.Cylinder loud speaker is made up of loudspeaker unit and cushion chamber and Bessel's horn, the big opening end of horn butts up against the back side of the vibrating diaphragm of loudspeaker unit after a cushion chamber, form rearmounted opposite sign cylinder, and cushion chamber and the part or all of of horn inwall are sound absorption properties surface texture, after vibrating membrane vibration, sound will, through horn to outdiffusion, make sound greatly strengthen, and make sound to a direction intent propagation, make the distance of sound transmission farther.

For realizing the sounding of horn speaker, its magnetic circuit system needs the magnet of an annular, and the processing cost of large volume magnet steel is high, consumes material many, finally causes the high of cost.

Utility model content

The purpose of this utility model is the technological deficiency for existing in prior art, and provides a kind of magnetic circuit system of horn speaker of low cost.

The technical scheme adopted for realizing the purpose of this utility model is:

A kind of magnetic circuit system of horn speaker, comprise lower plate, be fixedly installed on the cylindrical magnetic conduction core at lower plate center, be arranged on described magnetic conduction core ring week and the multiple cylindrical magnet steel that is fixedly connected with described lower plate of bottom close-packed arrays, the upper ring plate be fixedly connected with described magnet steel, the vibrating diaphragm that ring week is fixedly connected with described upper plate ring, is arranged on the voice coil loudspeaker voice coil that upper plate ring is fixedly connected with vibrating diaphragm with in the gap between magnetic core and upper end.

Described upper plate ring is provided with spaced multiple screwed hole, described upper plate ring is bonded with successively sound film packing ring and paper washer ring, and described operculum laryngis to be fixedly connected with upper plate ring by the screw that runs through and described voice coil loudspeaker voice coil is clamped in operculum laryngis and paper washer interannular.

The upper and lower two ends of described magnet steel bond with lower plate and upper plate ring respectively.

Described magnetic core is fixedly connected with by least two screws with lower plate.

Compared with prior art, the beneficial effects of the utility model are:

The operculum laryngis that the utility model adopts is ball end face shape, simplify its shape, can form by direct plate stamping, decrease post-processing steps compared to casting, greatly reduce production cost, and stable and controllable for quality, while change operculum laryngis, the radian of the inner surface of the cavity body structure of corresponding adjustment throat taps can realize, and overcomes Traditional Thinking, under the prerequisite ensureing tonequality, reduce holistic cost.

Accompanying drawing explanation

Figure 1 shows that the structural representation of the loudspeaker unit of horn speaker of the present utility model;

Figure 2 shows that the cross section structure schematic diagram shown in Fig. 1.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

As illustrated in fig. 1 and 2, the utility model for the cost avoiding the magnet steel of large volume to adopt bringing raise and difficulty of processing large, described magnetic circuit system 1 comprises lower plate 13, be fixedly installed on the cylindrical magnetic conduction core 15 at lower plate center, be arranged on described magnetic conduction core ring week and bottom is fixedly connected with described lower plate close-packed arrays, as bonding multiple cylindrical magnet steel 14, be fixedly connected with described magnet steel, as bonding upper ring plate 16, described vibrating diaphragm ring week is fixedly connected with described upper plate ring, described voice coil loudspeaker voice coil is arranged on upper plate ring and is fixedly connected with vibrating diaphragm with in the gap between magnetic core and upper end, described magnetic core 15 is fixedly connected with by least two screws with lower plate 13.

The circular magnetic steel extensively adopted in the past breaks the whole up into parts and becomes multiple cylindrical magnet steel by magnetic circuit system of the present utility model, reduce the requirement to material, reduce cost and difficulty of processing equally, simultaneously, be lower plate and magnetic conduction core two parts by T iron design alteration in the past, the mode that two parts adopt screw to connect, can control the Cost Problems that materials'use brings equally.

Specifically, described upper plate ring is provided with spaced multiple screwed hole, described upper plate ring is bonded with successively sound film packing ring 17 and the paper washer ring 18 of quality of rubber materials, described operculum laryngis to be fixedly connected with upper plate ring by the screw that runs through and described voice coil loudspeaker voice coil is clamped in operculum laryngis 2 and paper washer interannular.The employing of sound film packing ring and paper washer ring, improves the connective stability of vibrating diaphragm, can, directly by vibrating diaphragm and paper washer ring bonding connection, then utilize screw operculum laryngis to be fixedly connected with nationality with upper ring plate to realize final assembling product.Simultaneously, for improving globality, especially inner waterproof effect, the lower surface of described operculum laryngis is formed with the shield ring 23 protruded downwards, the first half of paper washer ring, sound film packing ring and at least upper ring plate is covered in it by described shield ring, and semi-inclusive formula structure effectively improves waterproof effect while being convenient to assembling.

The above is only preferred implementation of the present utility model; it should be noted that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.

Claims

1. the magnetic circuit system of a horn speaker, it is characterized in that, comprise lower plate, be fixedly installed on the cylindrical magnetic conduction core at lower plate center, be arranged on described magnetic conduction core ring week and the multiple cylindrical magnet steel that is fixedly connected with described lower plate of bottom close-packed arrays, the upper ring plate be fixedly connected with described magnet steel, the vibrating diaphragm that ring week is fixedly connected with described upper plate ring, is arranged on the voice coil loudspeaker voice coil that upper plate ring is fixedly connected with vibrating diaphragm with in the gap between magnetic core and upper end.

2. magnetic circuit system as claimed in claim 1, it is characterized in that, described upper plate ring is provided with spaced multiple screwed hole, described upper plate ring is bonded with successively sound film packing ring and paper washer ring, described operculum laryngis to be fixedly connected with upper plate ring by the screw that runs through and described voice coil loudspeaker voice coil is clamped in operculum laryngis and paper washer interannular.

3. magnetic circuit system as claimed in claim 2, it is characterized in that, the upper and lower two ends of described magnet steel bond with lower plate and upper plate ring respectively.

4. magnetic circuit system as claimed in claim 3, it is characterized in that, described magnetic core is fixedly connected with by least two screws with lower plate.