CN216122886U

CN216122886U - Ultrathin inverted cavity loudspeaker

Info

Publication number: CN216122886U
Application number: CN202122541578.6U
Authority: CN
Inventors: 刘复钦
Original assignee: Dongguan Shengqun Electroacoustic Tech Co ltd
Current assignee: Dongguan Shengqun Electroacoustic Tech Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-03-22
Anticipated expiration: 2031-10-21

Abstract

The utility model relates to the technical field of loudspeakers, in particular to an ultrathin inverted cavity loudspeaker. The ultrathin inverted cavity loudspeaker comprises a mounting shell and a loudspeaker; the mounting shell consists of an upper shell and a lower shell which are fixedly connected, and a cavity is formed in the mounting shell; the upper shell is provided with a through hole communicated with the cavity, and the outer side of the through hole is provided with an annular bracket extending into the cavity; the loudspeaker is arranged in the middle of the annular bracket; an iron sheet is fixedly connected to the top of the upper shell at a position corresponding to the through hole; the mounting shell is provided with a sound guide hole communicated with the cavity on the outer side of the annular support; the upper shell and the lower shell respectively extend out of two sides of the sound guide hole to form corresponding baffles, and the baffle at the bottom of the upper shell is contacted with the baffle at the top of the lower shell to form a reversing tube body. The utility model solves the problem of low frequency difference of the existing ultrathin loudspeaker.

Description

Ultrathin inverted cavity loudspeaker

Technical Field

The utility model relates to the technical field of loudspeakers, in particular to an ultrathin inverted cavity loudspeaker.

Background

A speaker is a transducer device that converts an electrical signal into an acoustic signal, and is often used in audio equipment. When the loudspeaker works, the voice coil vibrates the cone or the diaphragm through electromagnetic, piezoelectric or electrostatic effect and produces resonance (resonance) with the surrounding air to make sound.

The inside cavity of current ultra-thin formula speaker is mostly closed design, only sets up the phonate hole that is linked together with the cavity on the shell, and then when the vibrating diaphragm vibration, the air current can form extrusion, circulation not smooth in phonate hole department, leads to the speaker to have the poor problem of low frequency.

Therefore, it is necessary to provide a technical solution to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an ultrathin inverted cavity loudspeaker, and aims to solve the problem that the existing ultrathin loudspeaker is mainly designed in a closed manner, only a sound outlet communicated with a cavity is formed in a shell, and then when a vibrating diaphragm vibrates, airflow forms extrusion and unsmooth circulation at the sound outlet, so that the loudspeaker has low frequency difference.

In order to achieve the above object, the present invention provides an ultrathin inverted cavity speaker, which includes an installation shell and a speaker, wherein:

the mounting shell consists of an upper shell and a lower shell which are fixedly connected, and a cavity is formed in the mounting shell; the upper shell is provided with a through hole communicated with the cavity, and the outer side of the through hole is provided with an annular bracket extending into the cavity; the loudspeaker is arranged in the middle of the annular bracket; an iron sheet is fixedly connected to the top of the upper shell at a position corresponding to the through hole; the mounting shell is provided with a sound guide hole communicated with the cavity on the outer side of the annular support; the upper shell and the lower shell respectively extend out of two sides of the sound guide hole to form corresponding baffles, and the baffle at the bottom of the upper shell is contacted with the baffle at the top of the lower shell to form a reversing tube body.

More specifically, the upper shell and the lower shell are welded by ultrasonic waves.

More specifically, the bottom of going up the casing is equipped with first connecting plate, the top of casing is equipped with the second connecting plate down, the outer wall of first connecting plate with the inner wall of second connecting plate pastes the contact welding in order to realize go up the casing with the fixing of casing down.

More specifically, the bottom of the upper shell is provided with a first positioning column, a positioning hole is formed in the first positioning column, the top of the lower shell is provided with a second positioning column matched with the positioning hole, and the second positioning column is installed in the positioning hole.

More specifically, the side of going up the casing is equipped with a plurality of installation ears that outwards extend and form, the installation ear middle part is equipped with the mounting hole.

More specifically, the upper shell is provided with a sound outlet communicated with the cavity.

More specifically, the horn includes a vibration system and a magnetic circuit system, and the magnetic circuit system is installed at the bottom of the vibration system.

More specifically, the vibration system comprises a frame body, a vibrating diaphragm and a voice coil; the frame body is fixedly connected with the annular bracket; the vibrating diaphragm is arranged in the through hole and is fixedly connected with the frame body; the voice coil is arranged in the frame body and fixedly connected with the vibrating diaphragm.

More specifically, the magnetic circuit system comprises a magnet, a washer and a U-shaped cup; the magnet and the washer are both arranged inside the voice coil, and the washer is arranged above the magnet; the U-shaped cup cover is arranged outside the voice coil and fixedly connected with the frame body.

More specifically, the horn further comprises circuitry; the circuit system comprises a circuit board and a signal line; the circuit board is arranged at the bottom of the U cup; the signal line is installed on the installation shell and is electrically connected with the voice coil through the circuit board.

The technical effects of the ultrathin inverted cavity loudspeaker related by the utility model are as follows:

1. this application is through offering the pipe that falls to that leads the sound hole and set up in the cavity that is linked together with the cavity on the installation shell, and after the vibrating diaphragm vibration, the air current advanced into fall to in the body, through fall to body guide back stable orderly by lead the sound hole and discharge to this, better radiation low frequency extends low frequency.

2. The upper shell and the lower shell are welded by ultrasonic waves, so that a screw hole is not required to be formed, the upper shell and the lower shell are more convenient to mount, a core-pulling mechanism is not required to be additionally arranged on a die, and the production cost is reduced.

Drawings

Fig. 1 is a schematic structural view of an ultrathin inverted cavity speaker according to the present invention;

FIG. 2 is a schematic cross-sectional view of an ultrathin inverted cavity speaker according to the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

fig. 4 is an exploded schematic view of an ultrathin inverted cavity speaker according to the present invention;

FIG. 5 is an exploded view of another perspective of the ultrathin inverted cavity speaker according to the present invention;

fig. 6 is an enlarged schematic view of fig. 5 at B.

The labels in the figure are:

1-mounting a housing; 2, a loudspeaker; 3-iron sheet;

101-an upper shell; 102-a lower housing; 103-a chamber; 104-a ring-shaped support; 105-sound guide holes; 106 — a baffle; 107 — first connecting plate; 108 — a second connecting plate; 109 — a first positioning column; 110-positioning holes; 111-second location column; 112, mounting lugs; 113-mounting holes; 114-a through hole; 115-sound outlet;

21-a vibration system; 22-magnetic circuit system; 23-circuitry;

211, a frame body; 212-a diaphragm; 213-voice coil;

221-a magnet; 222-washer; 223-U cup;

231-a circuit board; 232-signal line;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be understood that the orientations and positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are based on the orientations and positional relationships shown in the drawings and are only for convenience in describing the embodiments of the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In order to more clearly illustrate the technical solution of the present invention, a preferred embodiment is provided below. With particular reference to fig. 1-6. The utility model provides an ultra-thin formula of falling cavity speaker, is including installation shell 1 and loudspeaker 2, wherein:

the mounting shell 1 consists of an upper shell 101 and a lower shell 102 which are fixedly connected, and a cavity 103 is formed inside the mounting shell; a through hole 114 communicated with the cavity 103 is formed in the upper shell 101, and an annular bracket 104 extending into the cavity 103 is arranged outside the through hole 114; the horn 2 is mounted in the middle of the annular bracket 104; the top of the upper shell 101 is fixedly connected with an iron sheet 3 at a position corresponding to the through hole 114; the mounting shell 1 is provided with a sound guide hole 105 communicated with the cavity 103 on the outer side of the annular bracket 104; the upper casing 101 and the lower casing 102 respectively extend from two sides of the sound guide hole 105 to form corresponding baffles 106, and the baffle 106 at the bottom of the upper casing 101 contacts with the baffle 106 at the top of the lower casing 102 to form a reverse pipe body.

In this embodiment, this application through set up on the installation shell 1 with the cavity 103 is linked together lead the sound hole 105 and set up in the cavity 103 to the body, loudspeaker vibration sound production back, extruded air current gets into earlier in the body of falling to, the warp fall to stable orderly by behind the body guide lead sound hole 105 to discharge to this, better radiation low frequency extends low frequency.

Further, in this embodiment, by the design of the iron sheet 3, the rigidity of the mounting case 1 is ensured while the wall thickness is reduced and the space for mounting the horn 2 inside the annular bracket 104 is enlarged. Specifically, the iron sheet 3 may be, but is not limited to be, fixedly connected to the upper housing 101 by injection molding.

Further, in this embodiment, the upper casing 101 is provided with a sound outlet 115 communicated with the cavity 103, and the sound outlet 115 is used for ensuring high-frequency sound emission of the speaker 2.

As a preferable scheme of this embodiment, the upper case 101 and the lower case 102 are ultrasonically welded. Specifically, ultrasonic welding is adopted to enable the upper shell 101 and the lower shell 102 to be free from screw holes, so that the upper shell 101 and the lower shell 102 can be mounted more conveniently, a core-pulling mechanism is not required to be additionally arranged on a forming die of the upper shell 101 and the lower shell 102, and production cost is reduced.

As a preferable solution of this embodiment, a first connecting plate 107 is disposed at the bottom of the upper casing 101, a second connecting plate 108 is disposed at the top of the lower casing 102, and an outer wall of the first connecting plate 107 is in contact welding with an inner wall of the second connecting plate 108 to fix the upper casing 101 and the lower casing 102. The snap-fit design of the first connecting plate 107 and the second connecting plate 108 makes the installation of the upper housing 101 and the lower housing 102 more convenient, and increases the positioning accuracy between the upper housing 101 and the lower housing 102.

In a preferred embodiment of the present invention, the inverted tube is disposed at the edge of the mounting housing 1, and the outer wall of the inverted tube is formed by the wall surface of the upper housing 101, the wall surface of the lower housing 102, the baffle 106, and the first connecting plate 107 and the second connecting plate 108 are used as one wall surface of the inverted tube, so that the material consumption of the baffle 106 is reduced, and the production cost is reduced.

As a preferable scheme of this embodiment, a first positioning column 109 is disposed at the bottom of the upper casing 101, a positioning hole 110 is disposed inside the first positioning column 109, a second positioning column 111 adapted to the positioning hole 110 is disposed at the top of the lower casing 102, and the second positioning column 111 is installed in the positioning hole 110. In this embodiment, the cross section of the installation shell 1 is rectangular, the first positioning columns 109 and the second positioning columns 111 are both provided with two positioning columns, and the two positioning columns are diagonally arranged inside the installation shell 1, so that the use of materials is reduced and the production cost is reduced while the positioning performance of the upper shell 101 and the lower shell 102 is ensured.

As a preferable scheme of this embodiment, a plurality of mounting lugs 112 formed to extend outward are provided at the side ends of the upper casing 101, and a mounting hole 113 is provided in the middle of the mounting lug 112. When the ultrathin inverted cavity loudspeaker is installed, the ultrathin inverted cavity loudspeaker can be fixedly connected to corresponding sound equipment by penetrating bolts into the installation holes 113 in the installation lugs 112. As preferred scheme, be equipped with on the installation ear 112 to extend the cyclic annular connecting portion that forms in the mounting hole 113, mounting hole 113 is in the outside of cyclic annular connecting portion forms the nut and puts into the portion, and then when adopting the bolt to make this ultra-thin formula cavity speaker that falls to connect on audio equipment, the bolt penetrates the middle part of cyclic annular connecting portion, and the nut card of this bolt goes into in the portion is put into to the nut, so, avoid the nut of bolt to reveal outside with audio equipment, prevent promptly that the condition of leading to this ultra-thin formula cavity speaker that falls to misplacing, even damage appears because of the mistake results in colliding with of nut.

As a preferable solution of the present embodiment, the horn 2 includes a vibration system 21 and a magnetic circuit system 22, and the magnetic circuit system 22 is installed at the bottom of the vibration system 21.

Further, the vibration system 21 includes a frame 211, a diaphragm 212, and a voice coil 213; the frame body 211 is fixedly connected with the annular bracket 104; the vibrating diaphragm 212 is arranged in the through hole 114 and is fixedly connected with the frame body 211; the voice coil 213 is disposed inside the frame body 211 and is fixedly connected to the diaphragm 212.

Further, the magnetic circuit system 22 comprises a magnet 221, a washer 222 and a U-cup 223; the magnet 221 and the washer 222 are both arranged inside the voice coil 213, and the washer 222 is arranged above the magnet 221; the U-cup 223 covers the voice coil 213 and is fixedly connected to the frame 211.

Further, the speaker 2 further includes a circuit system 23, the circuit system 23 includes a circuit board 231 and a signal line 232, the circuit board 231 is mounted at the bottom of the U-cup 223, the signal line 232 is mounted on the mounting case 1, and the circuit board 231 is electrically connected to the voice coil 213, so as to realize the connection of an external power signal.

The utility model relates to an ultrathin inverted cavity loudspeaker, which solves the problems that the inner cavity of the existing ultrathin loudspeaker is mostly of a closed design, only a sound outlet communicated with the cavity is formed in a shell, and then when a vibrating diaphragm vibrates, airflow forms extrusion and unsmooth circulation at the sound outlet, so that the loudspeaker has low frequency difference.

The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an ultra-thin formula of falling to cavity speaker which characterized in that: including installation shell and loudspeaker, wherein:

2. The ultra-thin inverted cavity loudspeaker as claimed in claim 1, wherein: the upper shell and the lower shell are welded by ultrasonic waves.

3. The ultra-thin inverted cavity speaker as claimed in claim 2, wherein: the bottom of going up the casing is equipped with first connecting plate, the top of casing is equipped with the second connecting plate down, the outer wall of first connecting plate with the inner wall of second connecting plate pastes to touch the welding in order to realize go up the casing with the fixing of casing down.

4. The ultra-thin inverted cavity loudspeaker as claimed in claim 1, wherein: the bottom of the upper shell is provided with a first positioning column, a positioning hole is formed in the first positioning column, the top of the lower shell is provided with a second positioning column matched with the positioning hole, and the second positioning column is installed in the positioning hole.

5. The ultra-thin inverted cavity loudspeaker as claimed in claim 1, wherein: the side of going up the casing is equipped with a plurality of installation ears that outwards extend and form, the installation ear middle part is equipped with the mounting hole.

6. The ultra-thin inverted cavity loudspeaker as claimed in claim 1, wherein: and the upper shell is provided with a sound outlet communicated with the cavity.

7. The ultra-thin inverted cavity loudspeaker as claimed in claim 1, wherein: the loudspeaker comprises a vibration system and a magnetic circuit system, wherein the magnetic circuit system is arranged at the bottom of the vibration system.

8. The ultra-thin inverted cavity speaker as claimed in claim 7, wherein: the vibration system comprises a frame body, a vibration film and a voice coil; the frame body is fixedly connected with the annular bracket; the vibrating diaphragm is arranged in the through hole and is fixedly connected with the frame body; the voice coil is arranged in the frame body and fixedly connected with the vibrating diaphragm.

9. The ultra-thin inverted cavity speaker as claimed in claim 8, wherein: the magnetic circuit system comprises a magnet, a washer and a U-shaped cup; the magnet and the washer are both arranged inside the voice coil, and the washer is arranged above the magnet; the U-shaped cup cover is arranged outside the voice coil and fixedly connected with the frame body.

10. The ultra-thin inverted cavity speaker as claimed in claim 9, wherein: the horn further comprises circuitry; the circuit system comprises a circuit board and a signal line; the circuit board is arranged at the bottom of the U cup; the signal line is installed on the installation shell and is electrically connected with the voice coil through the circuit board.