Loudspeaker

Abstract

Provided in the present invention is a loudspeaker, which comprises a frame, and a vibration system and a magnetic circuit system that are fixed to the frame, wherein the vibration system comprises a diaphragm fixed to the frame, a voice coil that drives the diaphragm to vibrate and produce sound, and a bobbin connecting the diaphragm and the voice coil; the diaphragm comprises a first surround, a second surround disposed on an outer side of the first surround, and a dome disposed between the first surround and the second surround; the dome comprises a body portion, a first extension portion bent and extending from an inner peripheral edge of the body portion in a direction approaching the bobbin, and a second extension portion bent and extending from the first extension portion in a direction approaching the first surround; an outer peripheral edge of the body portion and the second extension portion are fixed to the bobbin; and an outer peripheral edge of the first surround is fixed to the second extension portion. The loudspeaker provided in the present invention has better reliability and higher stability of acoustic performance.

Description

speaker Technical Field

[0001] This invention relates to the field of acoustic and electronic technology, and more particularly to a loudspeaker. Background Technology

[0002] With the development of science and technology, portable electronic products, such as mobile phones, handheld game consoles, navigation devices, or handheld multimedia entertainment devices, are widely used in people's daily lives. Among these mobile electronic devices, the voice playback device is an essential component. The quality of the voice directly affects the user experience when using these mobile electronic devices, so the requirements for the speakers used in them are getting higher and higher.

[0003] In related technologies, loudspeakers include a basket and a vibration system and a magnetic circuit system fixed to the basket. The magnetic circuit system has a magnetic gap, and the vibration system includes a diaphragm fixed to the basket, a voice coil that drives the diaphragm to vibrate and produce sound, and a frame connecting the diaphragm and the voice coil. However, in related technologies, the dome or frame is usually a planar structure and is only fixedly connected to the frame at one end. The dome or frame of such sound-producing devices has low strength and poor reliability, which will affect the acoustic performance of the loudspeaker.

[0004] Therefore, it is necessary to provide a product that solves the above problems. Technical issues

[0005] The purpose of this invention is to provide a loudspeaker with better reliability and higher acoustic performance stability. Technical solutions

[0006] To achieve the above objectives, the present invention provides a loudspeaker comprising a frame and a vibration system and a magnetic circuit system fixed to the frame. The vibration system includes a diaphragm fixed to the frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a frame connecting the diaphragm and the voice coil. The diaphragm includes a first surround, a second surround disposed outside the first surround, and a dome disposed between the first surround and the second surround. The dome includes a main body, a first extension extending from the inner periphery of the main body toward the frame, and a second extension extending from the first extension toward the first surround. The outer periphery of the main body and the second extension are fixed to the frame, and the outer periphery of the first surround is fixed to the second extension.

[0007] Preferably, the second extension includes a first surface facing the skeleton and a second surface opposite to the first surface, the first surface being glued to the skeleton and the second surface being glued to the first fold ring.

[0008] Preferably, the first folding ring comprises a first bending portion, a first outer fixed portion extending from an outer periphery of the first bending portion, and a first inner fixed portion extending from an inner periphery of the first bending portion, the first outer fixed portion is fixedly connected with the second extending portion, and the first outer fixed portion is closer to the skeleton than the first inner fixed portion in the vibration direction of the diaphragm.

[0009] Preferably, the skeleton comprises a first portion fixedly connected with the main body portion, a second portion extending from an inner periphery of the first portion in a direction away from the diaphragm, and a third portion extending from the second portion in a direction close to the first folding ring, the third portion is fixedly connected with the second extending portion.

[0010] Preferably, the third portion comprises a first segment connected with the second portion, and a second segment extending from an inner edge of the first segment in a direction close to the dome, the second segment is fixedly connected with the second extending portion.

[0011] Preferably, the skeleton comprises two opposite long-axis sides, two opposite short-axis sides, and four corner portions connecting the long-axis sides and the short-axis sides, the skeleton further comprises a support portion extending from the corner portion in a direction close to the voice coil, the voice coil is fixed to the support portion, and a gasket is further arranged between the support portion and the voice coil.

[0012] Preferably, the second folding ring comprises a second bending portion, a second outer fixed portion extending from an outer periphery of the second bending portion, and a second inner fixed portion extending from an inner periphery of the second bending portion, the second outer fixed portion is fixedly connected with the yoke, and the second inner fixed portion is fixedly connected with at least one of the first portion and the main body portion.

[0013] Preferably, the magnetic circuit system comprises a lower clamping plate fixed to the yoke, a main magnetic assembly fixed to an upper surface of the lower clamping plate, and a secondary magnetic assembly arranged around the main magnetic assembly, the main magnetic assembly and the secondary magnetic assembly are arranged in a spaced manner to form a magnetic gap.

[0014] Preferably, the loudspeaker further comprises a cover portion arranged above the magnetic circuit system, the cover portion has a top wall, a side wall extending from the top wall in a direction close to the lower clamping plate, and a bottom wall extending from the side wall in a direction close to the first folding ring and fixed to the secondary magnetic assembly, and the top wall is in abutment with the main magnetic assembly.

[0015] Preferably, the loudspeaker further comprises a metal ring arranged around the magnetic circuit system, the metal ring comprising a first ring portion fixedly connected with the bottom wall and a second ring portion bent and extended from an outer periphery of the first ring portion towards the first folded ring, the second ring portion being fixedly connected with the first inner fixed portion. Advantages

[0016] The loudspeaker of the present application comprises a basket, a vibration system and a magnetic circuit system fixed to the basket, the vibration system comprising a diaphragm fixed to the basket, a voice coil driving the diaphragm to vibrate and sound, and a skeleton connecting the diaphragm and the voice coil, the diaphragm comprising a first folded ring, a second folded ring arranged outside the first folded ring, and a dome arranged between the first folded ring and the second folded ring, the dome comprising a main body portion, a first extension portion bent and extended from an inner periphery of the main body portion towards the skeleton, and a second extension portion bent and extended from the first extension portion towards the first folded ring, an outer periphery of the main body portion and the second extension portion being fixed to the skeleton, and an outer periphery of the first folded ring being fixed to the second extension portion. In the above structure, the first extension portion and the second extension portion are bent and extended from the main body portion of the dome, the outer periphery of the main body portion and the second extension portion are fixed to the skeleton, and the outer periphery of the first folded ring is fixed to the second extension portion, so that the stability of the connection between the dome and the skeleton is increased, the strength of the dome is improved, and the membrane length of the first folded ring is increased, thereby making the loudspeaker more reliable and the acoustic performance more stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0018] Fig. 1 is a perspective view of the loudspeaker of the present application;

[0019] Fig. 2 is an exploded view of the loudspeaker of the present application;

[0020] Fig. 3 is a sectional view of the loudspeaker of the present application along the line A-A in Fig. 1;

[0021] Fig. 4 is a partial enlarged view of part B in Fig. 3;

[0022] Fig. 5 is a combined view of the skeleton, the gasket and the voice coil of the loudspeaker of the present application;

[0023] Reference signs:

[0024] 1, basket

[0025] 2、vibration system;

[0026] 21、diaphragm;211、first folding ring;2111、first bending part;2112、first outer fixing part;2113、first inner fixing part;212、second folding ring;2121、second bending part;2122、second outer fixing part;2123、second inner fixing part;213、ball top;2131、main body part;2132、first extending part;2133、second extending part;2133a、first surface;2133b、second surface;

[0027] 22、voice coil;

[0028] 23、skeleton;231、first part;232、second part;233、third part;2331、first segment;2332、second segment;234、long axis side;235、short axis side;236、corner part;237、support part;

[0029] 24、flexible support;

[0030] 3、magnetic circuit system;31、lower clamp plate;32、main magnetic assembly;33、auxiliary magnetic assembly;34、magnetic gap;

[0031] 4、gasket;

[0032] 5、cover;51、top wall;52、side wall;53、bottom wall;

[0033] 6、metal ring;61、first ring part;62、second ring part. Embodiments of the present application

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art of the present application without creative work are within the protection scope of the present application.

[0035] Please refer to FIGS. 1-5, the present application provides a loudspeaker 100, which comprises a spider 1, a vibration system 2 and a magnetic circuit system 3 fixed to the spider 1.

[0036] The vibration system 2 comprises a diaphragm 21 fixed to the basket 1, a voice coil 22 driving the diaphragm 21 to vibrate and sound, and a skeleton 23 connecting the diaphragm 21 and the voice coil 22, the diaphragm 21 comprises a first folded ring 211, a second folded ring 212 arranged outside the first folded ring 211, and a dome 213 arranged between the first folded ring 211 and the second folded ring 212, the dome 213 comprises a main body 2131, a first extension 2132 bent and extended from the inner periphery of the main body 2131 towards the direction close to the skeleton 23, and a second extension 2133 bent and extended from the first extension 2132 towards the direction of the first folded ring 211, the outer periphery of the main body 2131 and the second extension 2133 are fixed to the skeleton 23, and the outer periphery of the first folded ring 211 is fixed to the second extension 2133, in the above structure, by bending and extending the first extension 2132 and the second extension 2133 from the main body 2131 of the dome 213, the outer periphery of the main body 2131 and the second extension 2133 are fixed to the skeleton 23, and the outer periphery of the first folded ring 211 is fixed to the second extension 2133, which can increase the stability of the connection between the dome 213 and the skeleton 23, improve the strength of the dome 213, and at the same time, can increase the membrane length of the first folded ring 211, thereby making the reliability of the loudspeaker 100 better and the acoustic performance more stable.

[0037] Further, as shown in FIG. 4, the second extension 2133 comprises a first surface 2133a facing the skeleton 23 and a second surface 2133b opposite to the first surface 2133a, the first surface 2133a is glued and fixed to the skeleton 23, and the second surface 2133b is glued and fixed to the first folded ring 211.

[0038] Further, as shown in FIG. 3, the first folded ring 211 comprises a first bending part 2111, a first outer fixed part 2112 bent and extended from the outer periphery of the first bending part 2111, and a first inner fixed part 2113 extended from the inner periphery of the first bending part 2111, the first outer fixed part 2112 is fixedly connected with the second extension 2133, and the first outer fixed part 2112 is closer to the skeleton 23 than the first inner fixed part 2113 in the vibration direction of the diaphragm 21, the arrangement of the first extension 2132 and the second extension 2133 can cause the first outer fixed part 2112 and the first inner fixed part 2113 to have a height difference, thereby increasing the membrane length of the first folded ring 211 and improving the acoustic performance of the loudspeaker 100.

[0039] Further, as shown in FIGS. 3-4, the skeleton 23 comprises a first part 231 fixedly connected with the main body 2131, a second part 232 bent and extended from the inner periphery of the first part 231 in the direction away from the diaphragm 21, and a third part 233 bent and extended from the second part 232 in the direction close to the first folded ring 211, and the third part 233 is fixedly connected with the second extension 2133.

[0040] Further, as shown in FIGS. 4-5, the third portion 233 includes a first segment 2331 connected with the second portion 232 and a second segment 2332 extending from an inner edge of the first segment 2331 towards the direction of the dome 213, the second segment 2332 is fixedly connected with the second extension 2133, the skeleton 23 includes two opposite long axis sides 234, two opposite short axis sides 235 and four corner portions 236 connecting the long axis sides 234 and the short axis sides 235, the skeleton 23 further includes a support portion 237 extending from the corner portion 236 towards the direction of the voice coil 22, the voice coil 22 is fixed to the support portion 237. The arrangement of the second segment 2332 not only can better support the dome 213, but also can avoid the swing phenomenon generated when the voice coil 22 drives the skeleton 23 to vibrate, prevent the support portion 237 from being twisted, improve the stability of the skeleton 23, at the same time, the second segment 2332 cooperates with the first extension 2132 of the dome 213 to jointly adjust the position of the first outer fixing 2112, and further flexibly adjust the membrane length of the first folding ring 211.

[0041] Further, the support portion 237 and the voice coil 22 are further clamped with a gasket 4, the arrangement of the gasket 4 can prevent the upper sharp right angle or burr of the support portion 237 from damaging the voice coil wire, and ensure the stability of the loudspeaker 100.

[0042] Further, the second folding ring 212 includes a second bending portion 2121, a second outer fixing portion 2122 extending from an outer periphery of the second bending portion 2121, and a second inner fixing portion 2123 extending from an inner periphery of the second bending portion 2121, the second outer fixing portion 2122 is fixedly connected with the basket 1, the second inner fixing portion 2123 is fixedly connected with at least one of the first portion 231 and the main body portion 2131, it should be noted that the fixing manner among the second inner fixing portion 2123, the main body portion 2131 and the first portion 231 is not unique, the second inner fixing portion 2123 can be fixedly connected with the main body portion 2131 and then fixedly connected with the first portion 231, the first portion 231 can be fixedly connected with the second inner fixing portion 2123 and the main body portion 2131, and the second inner fixing portion 2123 and the main body portion 2131 are not fixed, and the like, which are not limited herein.

[0043] Further, as shown in FIG. 2, the vibration system 2 further includes a flexible support 24 arranged in a spaced manner with the second folding ring 212, the flexible support 24 is fixed to the skeleton 23 and electrically connected with the voice coil 22, the flexible support 24 includes two and is respectively located at opposite sides of the voice coil 22, after being electrified, the voice coil 22 will drive the diaphragm 21 to vibrate and sound under the action of the magnetic circuit system 3.

[0044] Further, as shown in FIG. 3, the magnetic circuit system 3 comprises a lower clamping plate 31 fixed to the yoke 1, a main magnetic assembly 32 fixed to the upper surface of the lower clamping plate 31, and a secondary magnetic assembly 33 arranged around the main magnetic assembly 32, the main magnetic assembly 32 and the secondary magnetic assembly 33 are arranged at intervals to form a magnetic gap 34.

[0045] Further, as shown in FIGS. 2-3, the loudspeaker 100 further comprises a cover part 5 arranged above the magnetic circuit system 3, the cover part 5 has a top wall 51, a side wall 52 extending from the top wall 51 to the lower clamping plate 31, and a bottom wall 53 bent and extended from the side wall 52 away from the top wall 51 and fixed to the secondary magnetic assembly 33, the top wall 51 is attached to the main magnetic assembly 32.

[0046] Further, the loudspeaker 100 further comprises a metal ring 6 arranged around the magnetic circuit system 3, the metal ring 6 comprises a first ring part 61 fixedly connected with the bottom wall 53, and a second ring part 62 bent and extended from the outer periphery of the first ring part 61 to the direction close to the first folded ring 211, the second ring part 62 is fixedly connected with the first inner fixing part 2113. The metal ring 6 is arranged for fixing the diaphragm 21, the arrangement of the metal ring 6 can make the arrangement of the vibration system 2 more flexible, by adjusting the position of the first ring part 61, the influence of the dimensional tolerance on the concentricity of the diaphragm 21 is reduced; by flexibly adjusting the position of the second ring part 62, the first inner fixing part 2113 of the first folded ring 211 and the height difference of the first outer fixing part 2112 are prevented from being too large, thereby affecting the acoustic performance of the loudspeaker 100.

[0047] Compared with the related art, in the above structure, the first extension part 2132 and the second extension part 2133 are bent and extended from the main body part 2131 of the ball top 213, the outer periphery of the main body part 2131 and the second extension part 2133 are fixed to the framework 23, and the first outer fixing part 2112 is fixed to the second extension part 2133, which can increase the stability of the connection between the ball top 213 and the framework 23, improve the strength of the ball top 213, and at the same time, can increase the membrane length of the first folded ring 211, thereby making the reliability of the loudspeaker 100 better and the acoustic performance stability higher.

[0048] The above is only an embodiment of the present application, and it should be noted that those skilled in the art can make improvements without departing from the inventive concept, but these all belong to the protection scope of the present application.

Claims

1. A loudspeaker comprising a basket and a vibration system and a magnetic circuit system fixed to the basket, the vibration system comprising a diaphragm fixed to the basket, a voice coil driving the diaphragm to vibrate to sound, and a former connecting the diaphragm and the voice coil, the diaphragm comprising a first folded ring, a second folded ring arranged outside the first folded ring, and a dome arranged between the first folded ring and the second folded ring, characterized in that, The dome includes a main body portion, a first extension portion bent and extended from an inner periphery of the main body portion toward the frame, and a second extension portion bent and extended from the first extension portion toward the first folded ring, an outer periphery of the main body portion and the second extension portion are fixed to the frame, and an outer periphery of the first folded ring is fixed to the second extension portion.

2. The loudspeaker of claim 1, wherein: The second extension portion includes a first surface facing the frame and a second surface opposite to the first surface, the first surface is glued and fixed to the frame, and the second surface is glued and fixed to the first folded ring.

3. The loudspeaker of claim 1, wherein: The first folded ring includes a first bent portion, a first outer fixed portion bent and extended from an outer periphery of the first bent portion, and a first inner fixed portion bent and extended from an inner periphery of the first bent portion, the first outer fixed portion is fixedly connected to the second extension portion, and the first outer fixed portion is closer to the frame than the first inner fixed portion in a vibration direction of the diaphragm.

4. The loudspeaker of claim 3, wherein: The frame includes a first portion fixedly connected to the main body portion, a second portion bent and extended from an inner periphery of the first portion away from the diaphragm, and a third portion bent and extended from the second portion toward the first folded ring, and the third portion is fixedly connected to the second extension portion.

5. The loudspeaker of claim 4, wherein: The third portion includes a first segment connected to the second portion and a second segment extended from an inner edge of the first segment toward the dome, and the second segment is fixedly connected to the second extension portion.

6. The loudspeaker of claim 5, wherein: The frame includes two opposite long axis sides, two opposite short axis sides, and four corner portions connecting the long axis sides and the short axis sides, the frame further includes a support portion extended from the corner portion toward the voice coil, the voice coil is fixed to the support portion, and a gasket is further clamped between the support portion and the voice coil.

7. The loudspeaker of claim 4, wherein: The second folded ring includes a second bent portion, a second outer fixed portion extended from an outer periphery of the second bent portion, and a second inner fixed portion extended from an inner periphery of the second bent portion, the second outer fixed portion is fixedly connected to the yoke, and the second inner fixed portion is fixedly connected to at least one of the first portion and the main body portion.

8. The loudspeaker of claim 7, wherein: The magnetic circuit system includes a lower clamping plate fixed to the yoke, a main magnetic assembly fixed to an upper surface of the lower clamping plate, and a secondary magnetic assembly arranged around the main magnetic assembly, the main magnetic assembly and the secondary magnetic assembly are arranged at intervals to form a magnetic gap.

9. The loudspeaker of claim 8, wherein: The loudspeaker further includes a cover portion arranged above the magnetic circuit system, the cover portion has a top wall, a side wall extended from the top wall toward the lower clamping plate, and a bottom wall bent and extended from the side wall toward the first folded ring and fixed to the secondary magnetic assembly, and the top wall is attached to the main magnetic assembly.

10. The loudspeaker of claim 9, wherein: The loudspeaker further includes a metal ring arranged around the magnetic circuit system, the metal ring includes a first ring portion fixedly connected to the bottom wall and a second ring portion bent and extended from an outer periphery of the first ring portion toward the first folded ring, and the second ring portion is fixedly connected to the first inner fixed portion.

Images