CN214627358U

CN214627358U - Sound production device and loudspeaker

Info

Publication number: CN214627358U
Application number: CN202120610796.8U
Authority: CN
Inventors: 倪佳; 王丽
Original assignee: Shenzhen Horn Audio Co Ltd
Current assignee: Shenzhen Horn Audio Co Ltd
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-11-05
Anticipated expiration: 2031-03-25

Abstract

The utility model belongs to the technical equipment field of the audio amplifier, especially, relate to a sound generating mechanism and speaker. The sound generating device comprises a shell structure and a vibration structure. The shell structure comprises a basin frame, a placement cavity is formed in one end of the basin frame and provided with a mounting opening, and the other end of the basin frame is connected with the magnetic circuit structure. The vibrating structure comprises a vibrating diaphragm and a voice coil which is located in the arranging cavity, the vibrating diaphragm covers the installing port, the edge of the edge connecting installing port of the vibrating diaphragm is connected with one end of the voice coil, the inner film surface of the vibrating diaphragm is connected with the other end of the voice coil, the other end of the voice coil extends towards the arranging cavity and is suspended, and the voice coil and one end of the magnetic circuit structure are arranged at intervals along the circumferential direction of the voice coil. The utility model discloses the internal diameter maximize of voice coil loudspeaker voice coil sets up, is favorable to promoting sound generating mechanism's power, improves the low frequency effect.

Description

Sound production device and loudspeaker

Technical Field

The utility model belongs to the technical equipment field of the audio amplifier, especially, relate to a sound generating mechanism and speaker.

Background

At present, under the trend of continuous miniaturization of electronic products, consumers aim at portable sound products as a source for sound production, and the ultra-thinness of a loudspeaker unit is particularly important. Due to the limitation of the structure size, the loudspeaker usually sacrifices the tone quality to replace the size when meeting the size requirement, so that the tone quality is uneven, and the use requirement of consumers cannot be met.

The existing ultrathin loudspeaker generally adopts a relatively flat frame and drum paper, but the traditional loudspeaker has a positioning support sheet to connect the frame and a sound cone, so that the height of the loudspeaker is increased, and the loudspeaker is not beneficial to flat design. And traditional ultra-thin speaker is when the low frequency, because the amplitude is great, and the dog-ear of traditional vibrating diaphragm is difficult to control its amplitude, leads to voice coil loudspeaker voice coil or dog-ear to touch the magnetic circuit easily and takes place the abnormal sound, has to promote the damping of vibrating diaphragm and limits the amplitude, and power is consequently also limited.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide a sound generating mechanism, aim at solving the problem that how to promote the power of voice coil loudspeaker voice coil and improve sound generating mechanism's low frequency effect.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a sound generating device for cooperation with a magnetic circuit structure, the sound generating device comprising:

the shell structure comprises a basin frame, wherein a mounting cavity is formed in one end of the basin frame, the mounting cavity is provided with a mounting opening, and the other end of the basin frame is connected with the magnetic circuit structure; and

the vibration structure comprises a vibrating diaphragm and a voice coil located in the arrangement cavity, the vibrating diaphragm covers the installation opening, the edge of the vibrating diaphragm is connected with the edge of the installation opening, one end of the voice coil is connected with the inner film surface of the vibrating diaphragm, the other end of the voice coil extends towards the arrangement cavity and is arranged in a hanging mode, and the voice coil and one end of the magnetic circuit structure are arranged at intervals in the circumferential direction of the voice coil.

In one embodiment, the diaphragm includes a diaphragm body, a fold ring disposed around a circumference of the diaphragm body and connected to the diaphragm body, and a fixing ring disposed around the circumference of the fold ring and connected to an edge of the mounting opening.

In one embodiment, the cross-sectional shape of the edge is arc-shaped.

In one embodiment, the edge of the mounting opening is provided with a positioning ring groove, the path of the positioning ring groove is arranged along the circumferential extension of the mounting opening, and the fixing ring is connected to the positioning ring groove.

In one embodiment, the outer surface of the folding ring is provided with a plurality of pattern grooves, and the pattern grooves are sequentially arranged at intervals along the extending path of the folding ring.

In one embodiment, the inner membrane surface of the membrane body is provided with a sound fixing groove, the extending path of the sound fixing groove is annularly arranged, and one end of the voice coil is butted with the sound fixing groove.

In one embodiment, the vibration structure further comprises an adhesive layer for adhering the voice coil to the sound fixing groove.

Another purpose of this application still lies in providing a speaker, and it includes as above sound generating mechanism, the speaker still includes magnetic circuit structure, magnetic circuit structure is including being located settle the intracavity magnet, connection the magnificent department of magnet, connection the basin frame is used for fixing magnet with the mount of magnificent department, fixed chamber has been seted up to the mount, magnet is connected the chamber end in fixed chamber, magnificent department with magnet follows the vibrating diaphragm is directional the range upon range of setting of direction at the chamber end in fixed chamber, just magnificent department with magnet all is located in the voice coil loudspeaker voice coil.

In one embodiment, the washer is provided with a first through hole, the magnet is provided with a second through hole, the cavity bottom of the fixed cavity is provided with a third through hole, and the first through hole, the second through hole and the third through hole are all communicated.

In one embodiment, the first through hole is flared toward the orifice of the diaphragm.

The beneficial effect of this application lies in: the vibrating diaphragm is connected to one end of the voice coil, the other end of the voice coil is arranged in a suspension mode, and the gap between the other end of the voice coil and the relative magnetic circuit structure of the other end of the voice coil is arranged, so that when the voice coil vibrates along with the vibrating diaphragm, the voice coil can be prevented from interfering with the magnetic circuit structure or the basin frame, the voice coil can be directly connected with the vibrating diaphragm, the inner diameter of the voice coil can be maximized, the power of the sound generating device is favorably improved, and the low-frequency effect is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a speaker according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of the loudspeaker of fig. 1;

fig. 3 is a schematic cross-sectional view of the loudspeaker of fig. 1.

Wherein, in the figures, the respective reference numerals:

100. a sound producing device; 10. a housing structure; 11. a basin stand; 12. a lug; 111. a placement cavity; 113. an installation port; 30. a voice coil; 221. pattern grooves; 43. washer; 431. a first through hole; 42. a magnet; 421. a second through hole; 41. a fixed mount; 411. a first through hole; 50. a vibrating structure; 21. a membrane body; 22. folding the ring; 23. a fixing ring; 211. a sound fixing groove; 112. a positioning ring groove; 412. and fixing the cavity.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in 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 present application and are not intended to limit the present application.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

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 application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 3, an embodiment of the present application provides a sound generating device, which is used in conjunction with a magnetic circuit structure. The sound generating device comprises a housing structure 10 and a vibrating structure 50. The housing structure 10 comprises a tub support 11, optionally the tub support 11 is made of a plastic material and by means of an injection molding process. A placing cavity 111 is formed in one end of the basin stand 11, the placing cavity 111 is provided with a mounting opening 113, and the other end of the basin stand 11 is connected with the magnetic circuit structure. Alternatively, in the present embodiment, one end of the mounting cavity 111 is opened with a mounting opening 113, and the other end is also provided with an opening for connection of the magnetic circuit structure. The vibration structure 50 includes a diaphragm 20 and a voice coil 30 located in the seating cavity 111. Alternatively, the diaphragm 20 covers the mounting opening 113, and the edge of the diaphragm 20 is connected to the edge of the mounting opening 113 by glue, it being understood that the diaphragm 20 seals the mounting opening 113 to prevent air from flowing out of the mounting opening 113 from the mounting opening 111. Voice coil 30 is the shell-like structure, and the inner membrane face of vibrating diaphragm 20 is connected to the one end of voice coil 30, and optionally, voice coil 30 is connected with vibrating diaphragm 20 earlier, assembles voice coil 30 and vibrating diaphragm 20 to basin frame 11 again to can omit the accommodation process of voice coil 30 height, improve the packaging efficiency. And the other end of voice coil 30 extends and unsettled setting towards settling chamber 111 in, and voice coil 30 sets up along voice coil 30's circumference interval with magnetic circuit structure's one end to when voice coil 30 was driven along with vibrating diaphragm 20, voice coil 30 along its axial removal can not take place to interfere with magnetic circuit structure, avoids producing the noise.

Diaphragm 20 is connected through the one end with voice coil 30, and voice coil 30's the unsettled setting of the other end, and the relative magnetic circuit structure clearance of the other end of voice coil 30 sets up to when voice coil 30 vibrates along with diaphragm 20, can avoid voice coil 30 and magnetic circuit structure or basin frame 11 to take place to interfere, and because voice coil 30 lug connection diaphragm 20, can also make voice coil 30's internal diameter maximize set up, be favorable to promoting sound generating mechanism's power, improve the low frequency effect.

Referring to fig. 1 and 3, in one embodiment, the diaphragm 20 includes a diaphragm body 21, a ring 22 disposed around the circumference of the diaphragm body 21 and connected to the diaphragm body 21, and a fixing ring 23 disposed around the circumference of the ring 22 and connected to the edge of the mounting opening 113. Alternatively, the film body 21 may be made of a paper material, and the folding rings 22 may be made of a polymer material, in this embodiment, the folding rings 22 are made of polymer Santoprene material, so as to provide a good damping effect.

Referring to fig. 1 and 3, in one embodiment, the cross-sectional shape of the edge 22 is an arc. Optionally, under the condition that the space of the sound generating device is limited, the corrugated rim 22 of the diaphragm 20 is optimized, the low-frequency energy and the high-frequency response of the sound generating device are enhanced, and the sound generating device has low frequency submergence and simultaneously gives consideration to medium-high frequency, so that the overall sound quality is balanced. In this embodiment, the cross-sectional shape of the corrugated rim 22 is an exponential arc, and a specific exponential arc makes the medium-high frequency response of the sound generating device better and the frequency domain wider.

In one embodiment, the edge of the mounting opening 113 is provided with a positioning ring groove 112, the path of the positioning ring groove 112 extends along the circumferential direction of the mounting opening 113, and the fixing ring 23 is connected to the positioning ring groove 112. The fixing ring 23 is fixed by the positioning groove 112, thereby facilitating the ultra-thinning of the overall size of the sound generating apparatus and improving the stability of the fixing ring 23.

Referring to fig. 1 and 3, in one embodiment, a plurality of patterned grooves 221 are formed on an outer surface of the folding ring 22, and the patterned grooves 221 are sequentially arranged along an extending path of the folding ring 22 at intervals. Alternatively, the reverse resonance generated by the vibration can be more effectively suppressed by arraying a plurality of lug grooves 221 on the surface of the edge 22. In one embodiment, the inner surface of the diaphragm body 21 is formed with a sound fixing groove 211, the extension path of the sound fixing groove 211 is disposed in a ring shape, and one end of the voice coil 30 is abutted to the sound fixing groove 211. In this embodiment, the positioning groove 112 for fixing the voice coil 30 is formed on the inner surface of the film body 21, and the voice coil 30 is clamped or glued in the positioning groove 112, so as to position the voice coil 30.

In one embodiment, the vibrating structure 50 further includes an adhesive layer for adhering the voice coil 30 to the tuning groove 211.

Referring to fig. 1 and fig. 3, the present invention further provides a speaker 100, where the speaker 100 includes a sound generating device, and the specific structure of the sound generating device refers to the above embodiments, and since the speaker 100 adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are also achieved, and are not repeated here.

In one embodiment, the speaker 100 further includes a magnetic circuit structure, the magnetic circuit structure includes a magnet 42 located in the installation cavity 111, a washer 43 connected to the magnet 42, and a fixing frame 41 connected to the frame 11 and used for fixing the magnet 42 and the washer 43, the fixing frame 41 defines a fixing cavity 412, the magnet 42 is connected to a cavity bottom of the fixing cavity 412, the washer 43 and the magnet 42 are stacked along a direction in which the diaphragm 20 points to the cavity bottom of the fixing cavity 412, and both the washer 43 and the magnet 42 are located in the voice coil 30. Optionally, the free end of the voice coil 30 is spaced from the cavity wall of the fixed cavity 412, so that the voice coil 30 does not interfere with the washer 43 or the magnet 42, or with the cavity wall of the fixed cavity 412 during the vibration process of the diaphragm 20, thereby avoiding noise generation and improving the sound quality.

Referring to fig. 1 and 3, in an embodiment, the washer 43 is provided with a first through hole 411, the magnet 42 is provided with a second through hole 421, the bottom of the fixing cavity 412 is provided with a third through hole 431, the first through hole 411, the second through hole 421 and the third through hole 431 are all communicated, and the third through hole 431 is communicated with the external space. Optionally, in this embodiment, the fixing frame 41 is U-shaped iron. Through first through-hole 411, second through-hole 421 and third through-hole 431, make vibrating diaphragm 20 at the vibration in-process, settle the air in chamber 111 and can flow out through third through-hole 431, it is unanimous, smooth and easy to guarantee air current and sound wave motion, inside air motion's interference when having avoided the low frequency domain, still make voice coil 30 can keep good ventilation at any time, a large amount of heat energy that during operation voice coil 30 produced, also can in time be taken away along with the circulation of air from this, thereby let voice coil 30 can avoid leading to the decline of power bearing capacity because overheated.

Referring to fig. 1 and 3, in one embodiment, the first through hole 411 is flared toward the opening of the diaphragm 20. Optionally, the opening of the first through hole 411 facing the diaphragm 20 is gradually enlarged in a direction in which the magnet 42 points to the diaphragm 20, so that the diaphragm 20 can be prevented from colliding with the washer 43 during diving toward the magnet 42.

Referring to fig. 1 and 3, in an embodiment, the housing structure 10 further includes a plurality of lugs 12, the lugs 12 are connected to the peripheral side of the basin frame 11, and the plurality of lugs 12 are spaced apart from each other.

This embodiment is through less parts such as bullet ripples, dust cap, falls the whole height of speaker 100 below 13mm, promotes the packaging efficiency simultaneously, the cost is reduced. And through the optimization of overall structure, design very shallow installation depth to make speaker 100 thinner, thus had more shallow installation depth and smaller box volume, the installation is more nimble simple and convenient, the space occupies less, weight is also lighter thereupon.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A sound generating device, cooperating with a magnetic circuit structure, the sound generating device comprising:

2. The sound generating apparatus of claim 1, wherein: the vibrating diaphragm comprises a diaphragm body, a ring which is arranged in the circumferential direction of the diaphragm body and connected with the diaphragm body, and a fixing ring which is arranged in the circumferential direction of the ring and connected with the edge of the mounting opening.

3. The sound generating apparatus of claim 2, wherein: the cross section of the folded ring is arc-shaped.

4. The sound generating apparatus of claim 2, wherein: the edge of installing port has seted up the positioning ring groove, the route of positioning ring groove is followed the circumference of installing port extends the setting, gu fixed ring connect in the positioning ring groove.

5. The sound generating apparatus of claim 2, wherein: the outer surface of the folding ring is provided with a plurality of pattern grooves, and the pattern grooves are arranged at intervals along the extending path of the folding ring in sequence.

6. The sound generating apparatus of any one of claims 2-5, wherein: the inner membrane surface of the membrane body is provided with a sound fixing groove, the extending path of the sound fixing groove is annularly arranged, and one end of the voice coil is in butt joint with the sound fixing groove.

7. The sound generating apparatus of claim 6, wherein: the vibration structure further comprises an adhesive layer, and the adhesive layer is used for adhering the voice coil to the sound fixing groove.

8. A loudspeaker, characterized in that, includes the sound generating mechanism of any one of claims 1-7, the loudspeaker also includes a magnetic circuit structure, the magnetic circuit structure includes the magnet that is located in the arrangement cavity, the washer that connects the magnet, connect the basin frame and be used for fixing the magnet and the mount of washer, the mount has seted up fixed chamber, magnet connects the chamber bottom in fixed chamber, washer and magnet set up along the direction of vibrating diaphragm directive chamber bottom in fixed chamber is range upon range of, and washer and magnet all are located in the voice coil loudspeaker voice coil.

9. The loudspeaker of claim 8, wherein: first through-hole has been seted up to china department, the second through-hole has been seted up to magnet, the third through-hole has been seted up at the chamber end in fixed chamber, just first through-hole, the second through-hole and the third through-hole all communicates.

10. The loudspeaker of claim 9, wherein: the first through hole is arranged towards the orifice of the diaphragm in an outward expansion mode.