Loudspeaker

Abstract

Provided in the present invention is a loudspeaker. The loudspeaker comprises a basket, and a vibration system and a magnetic circuit system which are fixed to the basket, wherein the vibration system comprises a diaphragm fixed to the basket, and a voice coil for driving the diaphragm to vibrate for producing sound, the diaphragm being provided with conductive parts, and the voice coil being electrically connected to the conductive parts. The loudspeaker further comprises conductive structures which are fixed to the basket and bring the conductive parts into communication with an external circuit, wherein each conductive structure comprises a main body part fixedly connected to the basket and a connecting part bending and extending from the main body part in a direction approaching the diaphragm, and the conductive parts are electrically connected to the connecting parts. Provided in the present invention is a loudspeaker having a large magnetic circuit volume and a better acoustic performance.

Description

Loudspeaker TECHNICAL FIELD

[0001] The present application relates to the field of acoustoelectric technology, 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 quality of the voice directly affects the user experience when the user uses these mobile electronic devices. Therefore, the requirements for the loudspeaker used therein are also increasing.

[0003] In order to realize the thin and light design of the mobile electronic device, the internal space of the loudspeaker is also getting smaller. The loudspeaker in the related art includes a basket, a vibration system and a magnetic circuit system. The vibration system includes a diaphragm fixed to the basket and a voice coil for driving the diaphragm to vibrate and produce sound. However, in the related art, the flexible circuit board occupies a lot of space horizontally, which causes the space of the magnetic circuit system to be compressed, thereby the driving force of the magnetic circuit system is insufficient, which affects the acoustic performance of the loudspeaker.

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

[0005] The purpose of the present application is to provide a loudspeaker with a large magnetic circuit volume and better acoustic performance while meeting miniaturization. TECHNICAL SOLUTION

[0006] In order to achieve the above purpose, the present application provides a loudspeaker, which includes a basket and a vibration system and a magnetic circuit system fixed to the basket. The vibration system includes a diaphragm fixed to the basket and a voice coil for driving the diaphragm to vibrate and produce sound. The diaphragm is provided with a conductive part, and the voice coil is electrically connected with the conductive part. The loudspeaker further includes a conductive structure fixed to the basket and communicating the conductive part with an external circuit. The conductive structure includes a main body part fixedly connected with the basket and a connecting part bent and extended from the main body part towards the direction close to the diaphragm. The conductive part is electrically connected with the connecting part.

[0007] Preferably, the conductive part is arranged on one side of the diaphragm or at least partially embedded in the diaphragm.

[0008] Preferably, two conductive parts are arranged at two adjacent corner regions of the diaphragm respectively, and two conductive structures are arranged corresponding to the positions of the conductive parts.

[0009] Preferably, the conductive structure is a conductive metal sheet or a flexible circuit board.

[0010] Preferably, the conductive structure comprises a base body and a conductive material dispersed in the base body, the conductive material being at least one of graphene, carbon nanotube, conductive nanocarbon fiber, silver powder, and liquid metal.

[0011] Preferably, the diaphragm comprises a ball top and a folded ring portion arranged around the ball top, the voice coil is fixed to the ball top, the folded ring portion comprises a bending portion, an outer fixed portion formed by bending and extending from an outer periphery of the bending portion, and an inner fixed portion formed by bending from an inner periphery of the bending portion, the outer fixed portion is fixedly connected with the yoke, and the inner fixed portion is fixedly connected with the ball top.

[0012] Preferably, the conductive portion comprises a first conductive portion arranged on the inner fixed portion or the ball top, and a second conductive portion arranged on the outer fixed portion, the first conductive portion is electrically connected with the voice coil, and the second conductive portion is electrically connected with the connecting portion.

[0013] Preferably, the first conductive portion is fixedly connected with the lead wire of the voice coil through conductive glue, the second conductive portion is fixedly connected with the connecting portion through conductive glue, and the voice coil, the diaphragm, the conductive structure, and an external circuit are electrically connected.

[0014] Preferably, the yoke comprises a top end face, a bottom end face arranged opposite to the top end face, and an inner side wall and an outer side wall arranged opposite to each other and connecting the top end face and the bottom end face, and the main body portion is fixed to the bottom end face.

[0015] Preferably, the outer fixed portion is arranged on the top end face and the outer side wall, the connecting portion comprises a first portion bent and extended from an outer side of the main body portion along the outer side wall towards the top end face, and a second portion bent and extended from the first portion towards the bending portion, the yoke further comprises an avoiding groove recessed from the top end face towards the bottom end face to avoid the second portion, and the second portion is accommodated in the avoiding groove.

[0016] Preferably, the outer fixed portion is arranged on the top end face, the inner side wall, and the outer side wall, the connecting portion comprises an extension portion bent and extended from an inner side of the main body portion along the inner side wall towards the diaphragm, and the extension portion is electrically connected with the second conductive portion. Advantages

[0017] The loudspeaker of the present application comprises a frame, a vibration system and a magnetic circuit system fixed to the frame, the vibration system comprises a diaphragm fixed to the frame and a voice coil driving the diaphragm to vibrate and sound, the diaphragm is provided with a conductive part, the voice coil is electrically connected with the conductive part, the loudspeaker further comprises a conductive structure fixed to the frame and communicating the conductive part with an external circuit, the conductive structure comprises a main body part fixedly connected with the frame and a connecting part bent and extended from the main body part towards the diaphragm, and the conductive part is electrically connected with the connecting part. In the above structure, by setting the conductive structure, the main body part of the conductive structure is fixed to the frame and the connecting part is additionally provided on the main body part, the connecting part is electrically connected with the conductive part to realize the electrical conduction of the voice coil, thereby reducing the space occupied by the traditional flexible circuit board in the transverse direction, increasing the volume of the magnetic circuit system while meeting the miniaturization, improving the driving force, and further improving the acoustic performance of the loudspeaker. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0019] Fig. 1 is a perspective view of the loudspeaker of the present application;

[0020] Fig. 2 is an exploded view of the loudspeaker of the present application;

[0021] Fig. 3 is a sectional view of the loudspeaker along the line A-A of Fig. 1 when the connecting part is arranged along the outer side wall;

[0022] Fig. 4 is a partial enlarged view of part B in Fig. 3;

[0023] Fig. 5 is a perspective view of the conductive structure when the connecting part is arranged along the outer side wall;

[0024] Fig. 6 is a sectional view of the loudspeaker along the line A-A of Fig. 1 when the connecting part is arranged along the inner side wall;

[0025] Fig. 7 is a partial enlarged view of part C in Fig. 6;

[0026] Fig. 8 is a perspective view of the conductive structure when the connecting part is arranged along the inner side wall;

[0027] Reference signs:

[0028] 1, frame; 11, top end face; 12, bottom end face; 13, outer side wall; 14, inner side wall; 15, avoiding groove;

[0029] 2, vibration system; 21, diaphragm; 211, conductive part; 2111, first conductive part; 2112, second conductive part; 212, corner area; 213, ball top; 214, folded ring part; 2141, bending part; 2142, outer fixed part; 2143, inner fixed part; 22, voice coil; 221, lead wire;

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

[0031] 4, conductive structure; 41, main body part; 42, connecting part; 421, first part; 422, second part; 423, extension part. Embodiment of the present application

[0032] 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 a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] Please refer to FIG. 1-8, the present application provides a loudspeaker 100, which comprises a frame 1 and a vibration system 2 and a magnetic circuit system 3 fixed to the frame 1.

[0034] The vibration system 2 comprises a diaphragm 21 fixed to the frame 1 and a voice coil 22 driving the diaphragm 21 to vibrate and sound, the diaphragm 21 is provided with a conductive part 211, the voice coil 22 is electrically connected with the conductive part 211, the loudspeaker 100 further comprises a conductive structure 4 fixed to the frame 1 and communicating the conductive part 211 with an external circuit, the conductive structure 4 comprises a main body part 41 fixedly connected with the frame 1 and a connecting part 42 bent and extended from the main body part 41 to the direction close to the diaphragm 21, the conductive part 211 is electrically connected with the connecting part 42.

[0035] Optionally, the conductive part 211 is arranged on one side of the diaphragm or at least partially embedded in the diaphragm 21. It should be noted that the conductive part 211 can be a conductive coating coated on the side of the diaphragm 21 facing the magnetic circuit system 3, can be a conductive material attached to the diaphragm 21, can be a conductive material at least partially embedded in the diaphragm 21, or can be a conductive material doped or mixed in the diaphragm 21 base material, etc., which is not limited here.

[0036] Optionally, in the embodiment, the conductive part 211 is provided with two and arranged at two adjacent corner regions 212 of the diaphragm 21, of course, in other embodiments, the conductive part 211 can be arranged at the long axis side or the short axis side of the diaphragm 21, etc., the conductive structure 4 is provided with two and arranged corresponding to the positions of the conductive part 211, in this way, the connecting part 42 can be connected with the conductive part 211 in the shortest path, so as to realize the purpose of reducing the space occupied by the conductive structure 4.

[0037] Optionally, the conductive structure 4 is a conductive metal sheet or a flexible circuit board.

[0038] Optionally, the conductive structure 4 includes a base body and a conductive material dispersed in the base body, the conductive material is at least one of graphene, carbon nanotube, conductive nanocarbon fiber, silver powder, and liquid metal; of course, the conductive structure 4 can also be a conductive part made of other materials, which is not limited here.

[0039] By arranging the conductive structure 4, the main body part 41 of the conductive structure 4 is fixed to the basket 1 and the connecting part 42 is additionally arranged on the main body part 41, the connecting part 42 is electrically connected with the conductive part 211 to realize the electrical conduction of the voice coil 22, thereby reducing the space occupied by the traditional flexible circuit board in the transverse direction, increasing the volume of the magnetic circuit system 3 while meeting the miniaturization, improving the driving force, and further improving the acoustic performance of the loudspeaker.

[0040] As shown, the basket 1 includes a top end face 11, a bottom end face 12, and an outer side wall 13 and an inner side wall 14 connected with the top end face 11 and the bottom end face 12 and arranged opposite to each other, and the main body part 41 is fixed to the bottom end face 12.

[0041] Further, the diaphragm 21 includes a ball top part 213 and a folded ring part 214 arranged around the ball top part 213, the folded ring part 214 includes a bending part 2141, an outer fixed part 2142 formed by bending and extending from the outer periphery of the bending part 2141, and an inner fixed part 2143 formed by bending from the inner periphery of the bending part 2141, the outer fixed part 2142 is fixedly connected with the basket 1, and the inner fixed part 2143 is fixedly connected with the ball top part 213.

[0042] The conductive part 211 includes a first conductive part 2111 arranged on the inner fixed part 2143 or the ball top part 213 and a second conductive part 2112 arranged on the outer fixed part 2142, the first conductive part 2111 is electrically connected with the voice coil 22, and the second conductive part 2112 is electrically connected with the connecting part 42.

[0043] Optionally, the first conductive part 2111 is fixedly connected with the lead 221 of the voice coil 22 through conductive glue. The first conductive part 2111 is bonded with the lead 221 of the voice coil 22 through the conductive glue, which not only improves the connection stability of the lead 221 and the conductive part 211, but also ensures the good conductive communication effect of the lead 221 of the voice coil 22 and the conductive part 211. The second conductive part 2112 is fixedly connected with the connecting part 42 through conductive glue. The voice coil 22, the diaphragm 21, the conductive structure 4 and the external circuit realize circuit conduction.

[0044] Optionally, 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] As shown in FIGS. 2-5, the connecting part 42 can be arranged along the outer side wall 13 of the yoke 1. The outer fixing part 2142 is arranged on the top end surface 11 and the outer side wall 13. The connecting part 42 comprises a first part 421 bent and extending from the outer side of the main body part 41 along the outer side wall 13 towards the direction close to the top end surface 11, and a second part 422 extending from the first part 421 towards the direction close to the bending part 2141. The yoke 1 is further provided with an avoiding groove 15 recessed from the top end surface 11 towards the bottom end surface 12 to avoid the second part 422. The second part 422 is accommodated in the avoiding groove 15 and electrically connected with the second conductive part 2112. In this way, the space occupied by the conductive structure 4 can be minimized, and the fixation of the outer fixing part 2142 and the yoke 1 can be more stable.

[0046] Optionally, as shown in FIGS. 6-8, the connecting part 42 can also be arranged along the inner side wall 14 of the yoke 1. The connecting part 42 comprises an extension part 423 bent and extending from the inner side of the main body part 41 along the inner side wall 14 towards the direction close to the diaphragm 21. The outer periphery of the bending ring part 214 is arranged on the top end surface 11, the inner side wall 14 and the outer side wall 13. The extension part 423 is electrically connected with the second conductive part 2112.

[0047] Of course, the connecting part 42 can also be arranged in the non-peripheral region of the main body part 41, and the remaining parts are also adjusted accordingly, which will not be described here. The connecting part 42 is arranged along the outer side wall 13 or the inner side wall 14 of the yoke 1, which can minimize the space occupied by the conductive structure 4 in the transverse direction, meeting the miniaturization requirement.

[0048] Compared with the related art, in the above structure, by arranging the conductive structure 4, the main body part 41 of the conductive structure 4 is fixed to the yoke 1, and the connecting part 42 is additionally arranged on the main body part 41, the connecting part 42 is electrically connected with the conductive part 211 to realize the electrical conduction of the voice coil 22, thereby reducing the space occupied by the traditional flexible circuit board in the transverse direction, increasing the volume of the magnetic circuit system while meeting the miniaturization, improving the driving force, and further improving the acoustic performance of the loudspeaker.

[0049] The above is only an embodiment of the present application, and it should be pointed out that those skilled in the art can make improvements without departing from the inventive concept, but these are within 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 and a voice coil driving the diaphragm to vibrate to produce sound, characterized in that, The vibrating diaphragm is provided with a conductive part, the voice coil is electrically connected with the conductive part, the loudspeaker further comprises a conductive structure fixed to the frame and communicating the conductive part with an external circuit, the conductive structure comprises a main body part fixedly connected with the frame and a connecting part bent and extended from the main body part towards the vibrating diaphragm, and the conductive part is electrically connected with the connecting part.

2. The loudspeaker of claim 1, wherein: The conductive part is arranged on one side of the vibrating diaphragm or at least partially embedded in the vibrating diaphragm.

3. The loudspeaker of claim 1, wherein: The conductive part is arranged on two adjacent corner regions of the vibrating diaphragm, and the conductive structure is arranged in correspondence with the positions of the conductive parts.

4. The loudspeaker of claim 1, wherein: The conductive structure is a conductive metal sheet or a flexible circuit board.

5. The loudspeaker of claim 1, wherein: The conductive structure comprises a base body and a conductive material dispersed in the base body, and the conductive material is at least one of graphene, carbon nanotubes, conductive nanocarbon fibers, silver powder and liquid metal.

6. The loudspeaker of claim 1, wherein: The vibrating diaphragm comprises a spherical top part and a folded ring part arranged around the spherical top part, the voice coil is fixed to the spherical top part, the folded ring part comprises a bending part, an outer fixed part bent and extended from an outer periphery of the bending part, and an inner fixed part bent and extended from an inner periphery of the bending part, the outer fixed part is fixedly connected with the frame, and the inner fixed part is fixedly connected with the spherical top part.

7. The loudspeaker of claim 6, wherein: The conductive part comprises a first conductive part arranged on the inner fixed part or the spherical top part and a second conductive part arranged on the outer fixed part, the first conductive part is electrically connected with the voice coil, and the second conductive part is electrically connected with the connecting part.

8. The loudspeaker of claim 7, wherein: The first conductive part is fixedly connected with the voice coil through conductive glue, and the second conductive part is fixedly connected with the connecting part through conductive glue, so that the voice coil, the vibrating diaphragm, the conductive structure and an external circuit are electrically connected.

9. The loudspeaker of claim 7, wherein: The frame comprises a top end face, a bottom end face arranged opposite to the top end face, and an inner side wall and an outer side wall arranged opposite to each other and connecting the top end face and the bottom end face, and the main body part is fixed to the bottom end face.

10. The loudspeaker of claim 9, wherein: The outer fixed part is arranged on the top end face and the outer side wall, the connecting part comprises a first part bent and extended from an outer side of the main body part towards the top end face along the outer side wall, and a second part bent and extended from the first part towards the bending part, the frame is further provided with an avoiding groove recessed from the top end face towards the bottom end face and avoiding the second part, and the second part is accommodated in the avoiding groove.

11. The loudspeaker of claim 9, wherein: The outer fixed part is arranged on the top end face, the inner side wall and the outer side wall, the connecting part comprises an extending part bent and extended from an inner side of the main body part towards the vibrating diaphragm along the inner side wall, and the extending part is electrically connected with the second conductive part.

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