Loudspeaker

Abstract

The present invention relates to the technical field of acoustoelectronics. Provided is a loudspeaker, comprising a basket, a vibration system fixed to the basket, and a magnetic circuit system for driving the vibration system to vibrate. The magnetic circuit system comprises a lower fastening plate, a main magnetic assembly fixed to the lower fastening plate, an auxiliary magnetic assembly surrounding the main magnetic assembly to form a magnetic gap, and an upper fastening plate arranged over the side of the auxiliary magnetic assembly close to the vibration system and fixed to the basket. The upper fastening plate comprises a main body portion; the main body portion comprises two long-axis edges extending in the direction of the long axis of the loudspeaker and arranged opposite each other, and two short-axis edges extending in the direction of the short axis of the loudspeaker and arranged opposite each other, the long-axis edges being fixed to the basket. The upper fastening plate further comprises first protruding portions that extend from the short-axis edges in the direction away from the main magnetic assembly and are fixed to the basket. The loudspeaker of the present invention can improve the strength along the short axis and effectively mitigate damage to a steel magnet caused by the drop of a single unit, thereby improving the structural stability of the loudspeaker.

Description

Loudspeaker TECHNICAL FIELD

[0001] The present application relates to the field of acoustoelectric technology, and in particular to a loudspeaker. BACKGROUND

[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 life. In these mobile electronic devices, a voice playing device is an indispensable component, and the voice quality directly affects the user experience when the user uses the mobile electronic device. Therefore, the requirements for the loudspeaker used therein are also increasingly high.

[0003] The loudspeaker of the related art comprises a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate. The magnetic circuit system comprises an upper clamping plate, and only the long axis side of the upper clamping plate is fixed to the frame, and the short axis of the upper clamping plate is suspended, thereby resulting in poor strength of the short axis and easy damage to the magnetic steel when falling.

[0004] Therefore, it is necessary to provide a product for solving the above problems. TECHNICAL PROBLEM

[0005] The present application aims to provide a loudspeaker with good structural stability and acoustic performance. TECHNICAL SOLUTION

[0006] In order to achieve the above-mentioned purpose, the present application provides a loudspeaker, comprising a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate. The magnetic circuit system comprises a lower clamping plate, a main magnetic assembly fixed to the lower clamping plate, a secondary magnetic assembly surrounding the main magnetic assembly to form a magnetic gap, and an upper clamping plate covering one side of the secondary magnetic assembly close to the vibration system and fixed to the frame. The upper clamping plate comprises a main body part, the main body part comprises two long axis sides arranged oppositely and extending along the long axis direction of the loudspeaker, and two short axis sides arranged oppositely and extending along the short axis direction of the loudspeaker. The long axis sides are fixed to the frame. The upper clamping plate further comprises a first protruding part extending out from the short axis side in a direction away from the main magnetic assembly and fixed to the frame.

[0007] Preferably, the secondary magnetic assembly comprises a secondary magnetic main body abutting the main body part, and a second protruding part extending out from the secondary magnetic main body in a direction away from the main magnetic assembly and arranged correspondingly to the first protruding part. The second protruding part is fixed to the first protruding part.

[0008] Preferably, the secondary magnetic main body comprises a first secondary magnetic segment arranged correspondingly to the long axis side, and a second secondary magnetic segment arranged correspondingly to the short axis side. The second protruding part is arranged in the second secondary magnetic segment.

[0009] Preferably, the auxiliary magnetic body is a ring-shaped integrated magnetic steel.

[0010] Preferably, the lower clamping plate comprises a lower clamping plate body for fixing the auxiliary magnetic assembly and the main magnetic assembly, and a third protruding part corresponding to the second protruding part and extending from the lower clamping plate body away from the main magnetic assembly, the third protruding part being fixedly connected to the second protruding part.

[0011] Preferably, the basin frame comprises a top end surface, a bottom end surface opposite to the top end surface, and a side wall connecting the top end surface and the bottom end surface, the first protruding part and the long axis side being fixed to the bottom end surface.

[0012] Preferably, the basin frame further comprises a recessed part formed from the bottom end surface to the top end surface for avoiding the first protruding part, the first protruding part being accommodated in the recessed part.

[0013] Preferably, the vibration system comprises a diaphragm fixed to the basin frame, and a voice coil for driving the diaphragm to vibrate, the diaphragm comprising a ball top part and a folded ring part surrounding the ball top part, one end of the voice coil being fixed to the ball top part, and the other end of the voice coil being suspended in the magnetic gap.

[0014] Preferably, the vibration system further comprises a flexible support fixed to the bottom end surface and electrically connected to the voice coil, the flexible support comprising two body parts respectively arranged on opposite sides of the first protruding part along the direction of the short axis side, a connecting part extending from the inner edge of the body part to the direction close to the ball top part, and a lead connecting part extending from the connecting part away from the body part, the lead connecting part being fixed to the ball top part.

[0015] Preferably, the ball top part further comprises a support part bent and extended from the outer edge of the ball top part to the direction close to the magnetic circuit system and abutting against the body part, the support part being provided with an opening part for avoiding the first protruding part, the first protruding part passing through the opening part and being fixed to the bottom end surface. Advantages

[0016] The novel loudspeaker of the present application comprises a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system comprising a lower clamping plate, a main magnetic assembly fixed to the lower clamping plate, a secondary magnetic assembly surrounding the main magnetic assembly to form a magnetic gap, and an upper clamping plate covering the secondary magnetic assembly on the side close to the vibration system and fixed to the frame, the upper clamping plate comprising a main body part comprising two long-axis sides arranged oppositely and extending along the long-axis direction of the loudspeaker, and two short-axis sides arranged oppositely and extending along the short-axis direction of the loudspeaker, the long-axis sides being fixed to the frame, and the upper clamping plate further comprising a first protruding part fixed to the frame and extending out from the short-axis side in a direction away from the main magnetic assembly. By extending the first protruding part fixed to the frame out from the short-axis side in a direction away from the main magnetic assembly, the strength of the short axis of the loudspeaker can be improved, the damage of the magnetic steel caused by the falling of the loudspeaker can be effectively covered, and the miniaturization and thinness of the loudspeaker can be met. BRIEF DESCRIPTION OF DRAWINGS

[0017] 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 will be briefly introduced. 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 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 perspective view of the loudspeaker of the present application along line A-A in Fig. 1;

[0021] Fig. 4 is a perspective view of the upper clamping plate of the loudspeaker of the present application;

[0022] Fig. 5 is a partially exploded view of the loudspeaker of the present application;

[0023] Fig. 6 is an enlarged view of part B in Fig. 5;

[0024] Reference signs:

[0025] 100, loudspeaker;

[0026] 1, frame; 11, top end face; 12, bottom end face; 13, side wall; 14, avoiding part;

[0027] 2, vibration system; 21, diaphragm; 211, ball top; 2111, support part; 2111a, opening part; 212, folded ring part; 2121, first fixed part; 2122, second fixed part; 2123, bending part; 22, voice coil; 23, flexible support; 231, body part; 232, connecting part; 233, lead wire connecting part; 24, skeleton;

[0028] 3, magnetic circuit system; 31, lower clamp plate; 311, lower clamp plate body; 312, third protruding part; 32, main magnetic assembly; 321, main magnetic steel; 322, main pole core; 33, magnetic gap; 34, auxiliary magnetic assembly; 341, auxiliary magnetic body; 3411, first auxiliary magnetic segment; 3412, second auxiliary magnetic segment; 342, second protruding part; 35, upper clamp plate; 351, body part; 3511, long axis side; 3512, short axis side; 352, first protruding part. Embodiment of the present application

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] As shown in FIGS. 1-6, the present application provides a loudspeaker 100, which comprises a basket 1, a vibration system 2 fixed to the basket 1, and a magnetic circuit system 3 driving the vibration system 2 to vibrate, the magnetic circuit system 3 comprising a lower clamp plate 31, a main magnetic assembly 32 fixed to the lower clamp plate 31, an auxiliary magnetic assembly 34 surrounding the main magnetic assembly 32 to form a magnetic gap 33, and an upper clamp plate 35 covering one side of the auxiliary magnetic assembly 34 close to the vibration system 2 and fixed to the basket 1, the upper clamp plate 35 comprising a body part 351, the body part 351 comprising two long axis sides 3511 extending along the long axis direction of the loudspeaker 100 and oppositely arranged, and two short axis sides 3512 extending along the short axis direction of the loudspeaker 100 and oppositely arranged, the long axis sides 3511 being held to the basket 1, as shown in FIGS. 4-5, the upper clamp plate 35 further comprising a first protruding part 352 extending out from the short axis sides 3512 to a direction away from the main magnetic assembly 32 and fixed to the basket, by extending out the first protruding part fixed to the basket from the short axis sides to the direction away from the main magnetic assembly, the loudspeaker short axis strength can be improved, the case of magnetic steel damage caused by loudspeaker falling can be effectively covered, and the demand for miniaturization and lightness of the loudspeaker can be met.

[0031] As shown in Fig. 2, the auxiliary magnetic assembly 34 comprises an auxiliary magnetic body 341 attached to the main body, and a second protruding part 342 corresponding to the first protruding part 352 and extending from the auxiliary magnetic body 341 away from the main magnetic assembly 32, the second protruding part 342 is attached to the first protruding part 352, and the second protruding part increases the volume of the magnetic steel in the magnetic circuit system, thereby improving the BL value and the sound performance of the loudspeaker.

[0032] Optionally, as shown in Fig. 2, the auxiliary magnetic body 341 comprises two first auxiliary magnetic segments 3411 corresponding to the two long axis sides 3511, and two second auxiliary magnetic segments 3412 corresponding to the two short axis sides 3512, and the second protruding part 342 is arranged on the second auxiliary magnetic segment 3412. Optionally, the auxiliary magnetic body 341 can also be a ring-shaped integrated magnetic steel, and the second protruding part 342 can be arranged on the ring-shaped integrated magnetic steel at a position corresponding to the first protruding part 352.

[0033] Further, the lower clamping plate 31 comprises a lower clamping plate body 311 for fixing the auxiliary magnetic assembly 34 and the main magnetic assembly 32, and a third protruding part 312 corresponding to the second protruding part 342 and extending from the lower clamping plate body 311 away from the main magnetic assembly 32, the third protruding part 312 is attached to the second protruding part 342.

[0034] Preferably, the upper clamping plate 35 is fixed to the basket 1 by welding, and other fixing methods such as gluing can also be used.

[0035] Optionally, the main magnetic assembly 32 comprises a main magnetic steel 321 fixed to the lower clamping plate 31, and a main pole core 322 arranged on the main magnetic steel 321.

[0036] Preferably, the basket 1 comprises a top end surface 11, a bottom end surface 12 arranged opposite to the top end surface 11, and a side wall 13 connecting the top end surface 11 and the bottom end surface 12, the first fixing part 2121 is fixed to the top end surface 11 and the side wall 13, and the first protruding part 352 and the long axis side 3511 are both fixed to the bottom end surface 12. Optionally, the basket 1 further comprises a avoiding part 14 recessed from the bottom end surface 12 to the top end surface 11 to avoid the first protruding part 352, and at least part of the auxiliary magnetic assembly 34 is accommodated in the avoiding part 14.

[0037] Preferably, as shown in Figure 3, the vibration system 2 comprises a diaphragm 21 fixed to the basket 1 and a voice coil 22 driving the diaphragm 21 to vibrate, the diaphragm 21 comprises a ball top 211 and a folded ring portion 212 arranged around the ball top 211, one end of the voice coil 22 is fixed to the ball top 211 and the other end is suspended in the magnetic gap 33, and the vibration system 2 further comprises a skeleton 24, the voice coil 22 is fixedly connected to the ball top 211 through the skeleton 24, of course, the voice coil can also be directly fixedly connected to the ball top 211, the folded ring portion 212 comprises a first fixed portion 2121 fixed to the basket 1, a second fixed portion 2122 fixedly connected to the ball top 211, and a bending portion 2123 connecting the first fixed portion 2121 and the second fixed portion 2122, and the voice coil is energized to drive the ball top to vibrate and produce sound.

[0038] Preferably, the vibration system 2 further comprises a flexible support 23 fixed to the basket 1 and electrically connected to the voice coil 22, the flexible support 23 comprises two body portions 231 arranged on the opposite sides of the first protruding portion 352 along the direction of the short axis edge 3512 respectively, a connecting portion 232 extending from the inner edge of the body portion 231 to the direction close to the ball top 211, and a lead connecting portion 233 extending from the connecting portion 232 to the direction away from the body portion 231, and the lead connecting portion 233 is fixed to the ball top 211.

[0039] Further, as shown in Figure 6, the ball top 211 further comprises a support portion 2111 bent and extending from the outer edge of the ball top 211 to the direction close to the magnetic circuit system 3 and abutting against the flexible support 23, the support portion 2111 is provided with an opening portion 2111a avoiding the sub-magnetic assembly 34, and the first protruding portion 352 passes through the opening portion 2111a and is fixed to the bottom end face 12.

[0040] It should be noted that the avoidance portion 14, the opening portion 2111a and the position of the body portion 231 are provided to make the structure of the loudspeaker more compact, so as to meet the needs of miniaturization and lightness, which is a preferred embodiment in the embodiments of the present application.

[0041] Compared with the related art, the loudspeaker of the present application can improve the strength of the short axis of the loudspeaker, effectively cover the damage of the magnetic steel caused by the falling of the loudspeaker, and meet the needs of miniaturization and lightness of the loudspeaker by extending the first protruding portion fixed to the basket from the short axis edge to the direction away from the main magnetic assembly.

[0042] The above only describes the embodiments 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 speaker comprising a basket, a vibration system fixed to the basket, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system comprising a lower clamp plate, a main magnetic assembly fixed to the lower clamp plate, a secondary magnetic assembly surrounding the main magnetic assembly to form a magnetic gap, and an upper clamp plate covering a side of the secondary magnetic assembly close to the vibration system and fixed to the basket, the upper clamp plate comprising a main body portion, the main body portion comprising two long-axis sides arranged opposite to each other and extending along a long-axis direction of the speaker, and two short-axis sides arranged opposite to each other and extending along a short-axis direction of the speaker, the long-axis sides being fixed to the basket, characterized in that, The upper clamping plate further comprises a first protruding part fixed to the yoke and extending from the short axis side away from the main magnetic assembly.

2. The loudspeaker of claim 1, wherein: The auxiliary magnetic assembly comprises an auxiliary magnetic body attached to the main body and a second protruding part corresponding to the first protruding part and extending from the auxiliary magnetic body away from the main magnetic assembly, and the second protruding part is fixed to the first protruding part.

3. The loudspeaker of claim 2, wherein: The auxiliary magnetic body comprises a first auxiliary magnetic segment corresponding to the long axis side and a second auxiliary magnetic segment corresponding to the short axis side, and the second protruding part is arranged in the second auxiliary magnetic segment.

4. The loudspeaker of claim 2, wherein: The auxiliary magnetic body is a ring-shaped integrated magnetic steel.

5. The loudspeaker of claim 3, wherein: The lower clamping plate comprises a lower clamping plate body fixed to the auxiliary magnetic assembly and the main magnetic assembly, and a third protruding part corresponding to the second protruding part and extending from the lower clamping plate body away from the main magnetic assembly, and the third protruding part is fixed to the second protruding part.

6. The loudspeaker of claim 1, wherein: The yoke comprises a top end surface, a bottom end surface arranged opposite to the top end surface, and a side wall connecting the top end surface and the bottom end surface, and the first protruding part and the long axis side are both fixed to the bottom end surface.

7. The loudspeaker of claim 6, wherein: The yoke further comprises an avoiding part recessed from the bottom end surface to the top end surface to avoid the first protruding part, and the first protruding part is accommodated in the avoiding part.

8. The loudspeaker of claim 6, wherein: The vibration system comprises a diaphragm fixed to the yoke and a voice coil driving the diaphragm to vibrate, and the diaphragm comprises a ball top part and a folded ring part arranged around the ball top part, one end of the voice coil is fixed to the ball top part, and the other end is suspended in the magnetic gap.

9. The loudspeaker of claim 8, wherein: The vibration system further comprises a flexible support fixed to the bottom end surface and electrically connected to the voice coil, and the flexible support comprises two body parts arranged on opposite sides of the first protruding part along the direction of the short axis side, a connecting part extending from the inner edge of the body part to the direction close to the ball top part, and a lead connecting part extending from the connecting part away from the body part, and the lead connecting part is fixed to the ball top part.

10. The loudspeaker of claim 9, wherein: The ball top part further comprises a support part bent and extended from the outer edge of the ball top part to the direction close to the magnetic circuit system and abutting against the body part, the support part is provided with an opening part avoiding the first protruding part, the first protruding part passes through the opening part and is fixed to the bottom end surface.

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