CN213906926U - Loudspeaker - Google Patents

Abstract

The utility model discloses a loudspeaker, including the basin frame and being fixed in the vibration system and the magnetic circuit of basin frame, vibration system includes the vibrating diaphragm, skeleton and voice coil loudspeaker voice coil, the vibrating diaphragm includes the well membrane that is located the intermediate position and the outer sound membrane that the interval encircles the well membrane, the edge that the well membrane was kept away from to the outer sound membrane is fixed in the basin frame, skeleton connection outer sound membrane and well membrane, magnetic circuit includes yoke and the main magnetic circuit subassembly that is fixed in the yoke, main magnetic circuit subassembly is including being fixed in the yoke and being close to the main magnet steel of vibrating diaphragm one side and being fixed in the main magnet steel and being close to the main pole core of vibrating diaphragm one side, vibration system still includes adapting unit, well membrane is including connecting in the first side of skeleton and connecting in adapting unit's second side; one side of the main pole core, which is close to the middle membrane, is provided with a connecting groove, and the connecting part is embedded in the connecting groove; because the skeleton passes through well membrane and adapting unit and connects in main pole core, consequently well membrane can carry out the restriction to the swing of skeleton and voice coil loudspeaker voice coil, has effectively solved the problem that present speaker vibration system swayd.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electronic component technical field especially relates to a loudspeaker.

[ background of the invention ]

The speaker is a transducer for converting an electrical signal into an acoustic signal, and is widely applied to portable electronic devices such as mobile phones, notebook computers, portable music players and the like, and along with the rapid development of the portable electronic devices, people have higher and higher requirements on the functionality of the portable electronic devices, and particularly, the speaker applied to the mobile phones and the speakers applied to the electronic devices also need corresponding development.

The current speaker generally includes the basin frame and accepts vibrating diaphragm, voice coil loudspeaker voice coil and the magnetic element in the basin frame, and the voice coil loudspeaker voice coil drives the vibrating diaphragm vibration under magnetic element's drive, and to some speakers, its vibrating diaphragm vibration range of self is big, and vibrating diaphragm and voice coil loudspeaker voice coil can appear rocking phenomenon in the normal direction of voice coil loudspeaker voice coil direction of motion, have influenced the vibration system's that vibrating diaphragm and voice coil loudspeaker voice coil constitute motion stability, and then influence the tone quality of speaker.

Therefore, it is necessary to provide a new speaker to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a difficult speaker that sways of vibration system.

The technical scheme of the utility model as follows:

in order to achieve the above object, the present invention provides

A loudspeaker comprises a basin frame and a vibration system and a magnetic circuit system, wherein the basin frame is contained in the containing space, the vibration system comprises a vibrating diaphragm fixed on the basin frame, a framework fixed on the vibrating diaphragm and facing one side of the magnetic circuit system, and a voice coil inserted in the magnetic gap through the framework, the framework is annular, the vibrating diaphragm comprises a middle membrane and an outer sound membrane, the middle membrane is located in the middle position, the outer sound membrane surrounds the outer sound membrane at the middle position, the edge of the middle membrane is fixed on the basin frame, the framework is connected with the outer sound membrane and the middle membrane, the magnetic circuit system comprises a magnetic yoke and a main magnetic circuit component fixed on the magnetic yoke, the main magnetic circuit component comprises a main magnetic steel fixed on one side of the vibrating diaphragm and a main pole core fixed on one side of the vibrating diaphragm, and the vibration system further comprises a connecting component, the middle membrane comprises a first side connected to the framework and a second side connected to the connecting component; one side that the main pole core is close to the mesolamella is equipped with the spread groove, the adapting unit inlays to be located the spread groove.

As a modification, the second side of the middle film is provided with a first through hole exposing the connecting member.

As an improvement, the connecting part has a second through hole penetrating through both ends thereof, one end of the connecting part is fixed to the second side of the middle membrane, the other end of the connecting part is embedded in the connecting groove, and the first through hole is communicated with the second through hole.

As a modification, the connecting groove penetrates through one end of the main pole core close to the middle membrane and one end far away from the middle membrane.

As an improvement, the magnetic circuit system further includes a secondary magnetic circuit component spaced apart from the primary magnetic circuit component to form a magnetic gap, the secondary magnetic circuit component includes a secondary pole core disposed around the primary pole core, and the magnetic gap is disposed between the primary pole core and the secondary pole core.

As an improvement mode, the inner edge of the framework is provided with a plurality of grooves with openings facing the middle part of the framework, a connecting block is arranged on the first side of the middle membrane, the shape of the connecting block is matched with that of the groove, and the connecting block is embedded in the groove.

As a refinement, the framework has an outer surface disposed away from the magnetic circuit system, and the first side of the middle membrane is provided with an extension portion extending to the outside thereof, and the extension portion is fixed to the outer surface.

As an improvement, the sound-absorbing structure further comprises an annular dome, wherein the dome is fixed on the outer surface and is positioned between the outer sound film and the middle film.

As an improved mode, the inner edge of the framework is provided with a flanging which is bent towards the magnetic circuit system and extends, the flanging is provided with the groove, and the voice coil is fixed on the flanging; the main magnetic circuit component, the middle membrane and the voice coil are enclosed to form a rear cavity, the magnetic circuit system, the basin frame, the outer voice membrane, the framework and the voice coil are enclosed to form a front cavity, and the flanging is provided with a vent groove for communicating the front cavity with the rear cavity.

As a refinement, the first side of the middle membrane is integrally formed with the inner edge of the armature.

The beneficial effects of the utility model reside in that:

the outer sound membrane is connected basin frame and skeleton, the one end that the main pole core is close to the well membrane is equipped with the spread groove, the first side of well membrane is fixed in the skeleton, the second side of well membrane is fixed with the adapting unit that extends to the main pole core, adapting unit inlays locates the spread groove, the voice coil loudspeaker voice coil drives the skeleton motion under the magnetic field effect that main magnetic circuit subassembly and vice magnetic circuit subassembly produced, because the skeleton is connected in the main pole core through well membrane and adapting unit, consequently, well membrane can restrict the swing of skeleton and voice coil loudspeaker voice coil, the problem that present speaker vibration system swayd has effectively been solved.

[ description of the drawings ]

Fig. 1 is a schematic view of the overall structure of the loudspeaker of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 2;

fig. 4 is a schematic perspective exploded view of the speaker of the present invention;

fig. 5 is a front exploded schematic view of the speaker of the present invention;

fig. 6 is a schematic structural view of the middle membrane, the connecting member, the framework, the main magnetic circuit assembly and the secondary magnetic circuit assembly of the loudspeaker of the utility model;

in the figure:

100. a speaker; 10. a basin stand; 11. an accommodating space; 20. a magnetic circuit system; 21. a magnetic yoke; 22. a main magnetic path component; 221. connecting grooves; 222. a main pole core; 223. main magnetic steel; 23. a secondary magnetic circuit assembly; 231. a secondary pole core; 232. a secondary magnetic steel; 24. a magnetic gap; 30. a vibration system; 31. a framework; 311. a groove; 312. flanging; 3121. a vent channel; 313. an outer surface; 32. a voice coil; 33. an external sound membrane; 331. a first movable portion; 332. a first hinge part; 333. a first fixed part; 34. a middle membrane; 341. a second movable portion; 3411. connecting blocks; 3412. an extension portion; 342. a second flange part; 343. a second fixed part; 3431. a first through hole; 40. a connecting member; 41. a second through hole; 42. a barrel; 43. a connecting ring; 50. a front cavity; 60. a rear cavity; 70. and (4) a ball top.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, inner, outer, top, bottom … …) in the embodiments of the present invention are only used to explain the relative position between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

It will also 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.

Example 1

Referring to fig. 1 to 6, a speaker 100 of the present invention is schematically shown, which includes a frame 10 having an accommodating space 11, and a magnetic circuit system 20 and a vibration system 30 accommodated in the accommodating space 11.

The magnetic circuit system 20 comprises a magnetic yoke 21, a main magnetic circuit component 22 and an auxiliary magnetic circuit component 23 which is arranged at a distance from the main magnetic circuit component 22 to form a magnetic gap 24, wherein the main magnetic circuit component 22 and the auxiliary magnetic circuit component 23 are both fixed on the magnetic yoke 21, and the magnetic yoke 21 is fixedly connected to the basin stand 10.

The vibration system 30 includes a bobbin 31, a voice coil 32 and a vibrating diaphragm, the vibrating diaphragm is fixed to the frame 10, specifically, the vibrating diaphragm includes a middle membrane 34 located at a middle position and an outer membrane 33 surrounding the middle membrane 34 at an interval, the voice coil 32 is fixed to the bobbin 31, the voice coil 32 is inserted into the magnetic gap 24, and the voice coil 32 drives the bobbin 31 to move under the action of a magnetic field generated by the main magnetic circuit assembly 22 and the auxiliary magnetic circuit assembly 23. The edge of the outer sound membrane 33 away from the middle membrane 34 is fixed to the frame 10, that is, the outer sound membrane 33 connects the frame 10 and the framework 31, specifically, the outer sound membrane 33 includes a first movable portion 331, a first ring folding portion 332 and a first fixing portion 333 which are connected in sequence, wherein the first ring folding portion 332 is made of a flexible material, such as rubber. The first fixing part 333 is fixed to the frame 10, and the first movable part 331 is fixed to the frame 31.

As shown in fig. 2, 3 and 6, the main magnetic circuit assembly 22 has a connection groove 221 at one end near the middle membrane 34, and the notch of the connection groove 221 is disposed opposite to the second side of the middle membrane 34. The first side of the middle membrane 34 is fixed on the frame 31, the second side of the middle membrane 34 is provided with a connecting part 40 extending towards the main magnetic circuit component 22, and the connecting part 40 is embedded in the connecting groove 221, so that the second side of the middle membrane 34 is connected with the main magnetic circuit component 22. Specifically, the middle membrane 34 includes a second movable portion 341, a second collar portion 342 and a second fixing portion 343, which are connected in sequence from the first side to the second side, wherein the second collar portion 342 is made of a flexible material, such as rubber. The second movable portion 341 is fixed to the frame 31, and the second fixed portion 343 is provided with the above-described connecting member 40.

When the voice coil 32 drives the bobbin 31 to move under the action of the magnetic field generated by the main magnetic circuit assembly 22 and the secondary magnetic circuit assembly 23 and drives air to vibrate, the middle membrane 34 (and the connecting component 40) connecting the bobbin 31 and the main magnetic circuit assembly 22 can limit the swing of the bobbin 31 and the voice coil 32, so that the anti-swing capability of the loudspeaker 100 is improved, and the sound quality of the loudspeaker 100 is prevented from being influenced. At the same time, limiting the rocking of the armature 31 and voice coil 32 also reduces the air flow to the cavity in the speaker 100, improving aerodynamic noise.

In addition, the connection part 40 is used for connecting the second fixing part 343 with the main magnetic circuit assembly 22, and also can be used for transferring heat emitted from the main magnetic circuit assembly 22 to the outside through the second fixing part 343 to help the main magnetic circuit assembly 22 dissipate heat.

As shown in fig. 2, the second fixing portion 343 of the middle membrane 34 is provided with a first through hole 3431 exposing the connecting part 40, and the first through hole 3431 exposes the connecting part 40, so that the connecting part 40 can directly transmit and dissipate heat generated by the main magnetic circuit assembly 22 to the outside, thereby improving the heat dissipation performance of the speaker 100.

Further, the connection part 40 has the second through hole 41 penetrating through both ends thereof, one end of the connection part 40 is fixed to the second side (i.e., the second fixing portion 343) of the middle membrane 34, the other end is embedded in the connection groove 221, and the first through hole 3431 and the second through hole 41 are communicated, which can increase the contact area of the connection part 40 with the outside air and significantly increase the heat dissipation area of the connection part 40.

As shown in fig. 6, the main magnetic path assembly 22 includes a main pole core 222 and a main magnetic steel 223, which are stacked, the main magnetic steel 223 is fixed to one end of the main pole core 222 away from the middle film 34, and the main magnetic steel 223 is fixed to the yoke 21. The voice coil 32 is disposed around the main pole piece 222, the connection slot 221 penetrates through one end of the main pole piece 222 close to the middle diaphragm 34 and one end of the main pole piece 222 far from the middle diaphragm 34, and the connection part 40 is connected to the main magnetic steel 223, so that the main magnetic steel 223 is exposed to the outside through the second through hole 41 and the first through hole 3431, and the heat dissipation performance of the main magnetic circuit assembly 22 can be further improved.

Further, the connecting component 40 includes a hollow cylinder 42 with two through ends, so the cylinder 42 has a second through hole 41, one end of the cylinder 42 is provided with a connecting ring 43 perpendicular to the cylinder 42, the other end of the cylinder 42 is embedded in the connecting groove 221, an end surface of the connecting ring 43 is connected to the second fixing portion 343 in an adhering manner, and the connecting ring 43 can be adhered to the second fixing portion 343 by an adhesive.

As shown in fig. 3 and 4, the frame 31 is annular and disposed around the middle diaphragm 34, and the outer sound diaphragm 33 is also annular, and the outer sound diaphragm 33 is disposed around the frame 31. The inner edge of the framework 31 is provided with a plurality of grooves 311 with openings facing the middle part of the framework 31, the first side of the middle membrane 34 is provided with connecting blocks 3411, the shapes of the connecting blocks 3411 are matched with the shapes of the grooves 311, the connecting blocks 3411 are embedded in the grooves 311, and the connecting blocks 3411 and the grooves 311 are used for increasing the connecting area of the framework 31 and the middle membrane 34 and ensuring the connecting firmness of the framework 31 and the middle membrane 34. Preferably, the first side of the middle membrane 34 is integrally formed with the inner edge of the armature 31. Specifically, the inner edge of the bobbin 31 is provided with a flange 312 bent and extended toward the magnetic circuit system 20, the flange 312 is provided with a groove 311, and the voice coil 32 is fixed to the flange 312. The main magnetic circuit component 22, the middle membrane 34 and the voice coil 32 enclose a rear cavity 60, the secondary magnetic circuit component 23, the basin frame 10, the outer sound membrane 33, the framework 31 and the voice coil 32 enclose a front cavity 50, the flange 312 is provided with vent grooves 3121 for communicating the front cavity 50 with the rear cavity 60, and the vent grooves 3121 and the grooves 311 are arranged at intervals.

The frame 31 has an outer surface 313 facing away from the magnetic circuit system 20, the first side (i.e., the second movable portion 341) of the middle membrane 34 is provided with an extension portion 3412 extending to the outside thereof, the extension portion 3412 is fixed to the outer surface 313, and the extension portion 3412 is used for increasing the connection area between the middle membrane 34 and the frame 31 and improving the connection firmness of the two. Further, the speaker 100 further includes a dome 70 having a ring shape, the dome 70 is fixed to the outer surface 313, and the dome 70 is located between the outer sound film 33 and the middle film 34.

The secondary magnetic circuit assembly 23 further includes a secondary pole core 231 disposed around the primary pole core 222 and a secondary magnetic steel 232 disposed around the primary magnetic steel 223, and of course, the secondary pole core 231 and the secondary magnetic steel 232 are stacked, the back surface of the secondary magnetic steel 232 is fixed to the yoke 21, the secondary pole core 231 is fixed to the front surface of the secondary magnetic steel 232, and magnetic gaps 24 are disposed between the primary pole core 222 and the secondary pole core 231 and between the primary magnetic steel 223 and the secondary magnetic steel 232.

Example 2

This example differs from example 1 in that: the side wall of the cylinder 42 is provided with a plurality of auxiliary heat dissipation holes for exposing the main pole core 222, and specifically, the auxiliary heat dissipation holes are exposed from the groove wall of the connection groove 221 of the main pole core 222, so that the auxiliary heat dissipation holes are added to improve the heat dissipation effect of the main pole core 222.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (10)

1. A loudspeaker comprises a basin frame with an accommodating space, a vibration system accommodated in the accommodating space and a magnetic circuit system with a magnetic gap, wherein the vibration system comprises a vibrating diaphragm fixed on the basin frame, a framework fixed on the vibrating diaphragm facing one side of the magnetic circuit system and a voice coil inserted in the magnetic gap through the framework, the framework is annular, the vibrating diaphragm comprises a middle membrane positioned in the middle position and an outer sound membrane surrounding the middle membrane at intervals, the edge of the outer sound membrane far away from the middle membrane is fixed on the basin frame, the framework is connected with the outer sound membrane and the middle membrane, the magnetic circuit system comprises a magnetic yoke and a main magnetic circuit component fixed on the magnetic yoke, the main magnetic circuit component comprises a main magnetic steel fixed on one side of the vibrating diaphragm and a main pole core fixed on one side of the vibrating diaphragm, the vibration system further comprises a connecting member, and the middle membrane comprises a first side connected to the framework and a second side connected to the connecting member; one side that the main pole core is close to the mesolamella is equipped with the spread groove, the adapting unit inlays to be located the spread groove.

2. The loudspeaker of claim 1, wherein the second side of the middle membrane is provided with a first through hole exposing the connecting member.

3. The speaker as claimed in claim 2, wherein the connection part has a second through hole penetrating both ends thereof, one end of the connection part is fixed to the second side of the middle membrane, the other end of the connection part is fitted into the connection groove, and the first through hole and the second through hole are communicated.

4. The loudspeaker of claim 1, wherein the connecting slots extend through the main pole core at an end proximate to the center diaphragm and at an end distal from the center diaphragm.

5. The loudspeaker of claim 4, wherein the magnetic circuit further comprises a secondary magnetic circuit assembly spaced from the primary magnetic circuit assembly to form a magnetic gap, the secondary magnetic circuit assembly comprising a secondary pole core disposed around the primary pole core, the magnetic gap being disposed between the primary and secondary pole cores.

6. The loudspeaker of claim 1, wherein the inner edge of the frame is provided with a plurality of grooves with openings facing the middle of the frame, the first side of the middle membrane is provided with a connecting block, the shape of the connecting block is matched with that of the grooves, and the connecting block is embedded in the grooves.

7. The loudspeaker of claim 1, wherein the frame has an outer surface disposed away from the magnetic circuit system, and the first side of the middle membrane is provided with an extension extending outward therefrom, the extension being secured to the outer surface.

8. The loudspeaker of claim 7 further comprising a dome having an annular shape, said dome being secured to said outer surface and said dome being located between said outer acoustic membrane and said middle membrane.

9. The loudspeaker according to claim 6, wherein the inner edge of the frame is provided with a flange bent and extending towards the magnetic circuit system, the flange is provided with the groove, and the voice coil is fixed to the flange; the main magnetic circuit component, the middle membrane and the voice coil are enclosed to form a rear cavity, the magnetic circuit system, the basin frame, the outer voice membrane, the framework and the voice coil are enclosed to form a front cavity, and the flanging is provided with a vent groove for communicating the front cavity with the rear cavity.

10. The loudspeaker of claim 6 wherein the first side of the middle membrane is integrally formed with the inner edge of the armature.

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