Loudspeaker

Abstract

The utility model discloses a loudspeaker, which comprises a yoke and two structural units, and the structural units are symmetrically arranged on two opposite sides of the yoke. Each structural unit comprises a basin stand, a vibrating diaphragm assembly, a centering disk and a plurality of voice coils, the vibrating diaphragm assembly is connected with the basin stand, and the voice coils are connected with the vibrating diaphragm assembly; a centering support chip is arranged between two adjacent voice coils and comprises an inner mounting part, cantilever parts and an outer mounting part, the inner mounting part is connected with the diaphragm assembly, the two ends of the inner mounting part are respectively connected with the cantilever parts, one end, far away from the inner mounting part, of each cantilever part is connected with the outer mounting part, and the outer mounting part is fixedly connected with the basin frame; a conduction bonding pad is arranged on one side, far away from the basin frame, of the outer mounting part, and a conduction wire for electrically conducting the voice coil and the conduction bonding pad is arranged on the centering disk. According to the double-sided vibration loudspeaker, the open circuit risk of the conducting circuit on the centering disk is low, the service life of the loudspeaker is prolonged, the total number of the centering disks is reduced, the manufacturing cost of the loudspeaker is saved, and the market competitiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a loudspeaker. Background Art

[0002] Compared with single-sided vibration speakers, double-sided vibration speakers have higher space utilization and can generally be designed to produce better bass effects under the same volume. In particular, large-amplitude double-sided speakers have more shocking bass effects.

[0003] Traditional double-sided vibration speakers often place the centering support at the short axis of the speaker. When the speaker has a large length-to-width ratio, the two ends of the short axis are often the points with the maximum rolling displacement. Especially in multi-voice coil double-sided vibration speakers, when the rolling vibration increases, the stress on the centering support will undoubtedly increase. For example, the amplitude of a master-level large-amplitude speaker is generally above 0.6mm, which is more than twice the amplitude of an ordinary speaker. In actual products, the centering support not only supports the vibration component, but also energizes the voice coil. When the stress of the centering support increases, long-term operation will bring the risk of the conductive wiring on the centering support being broken, so that the voice coil has no power input, causing the speaker to be unable to sound. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a loudspeaker whose centering support piece is not prone to short circuit.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a speaker, comprising:

[0006] yoke iron;

[0007] Two structural units, the structural units are symmetrically arranged on opposite sides of the yoke;

[0008] Each of the structural units includes a basin frame, a diaphragm assembly, a centering support and a plurality of voice coils, wherein the diaphragm assembly is connected to the basin frame, and the voice coil is connected to the diaphragm assembly; the centering support is arranged between two adjacent voice coils, and the centering support includes an inner mounting portion, a cantilever portion and an outer mounting portion, the inner mounting portion is connected to the diaphragm assembly, the two ends of the inner mounting portion are respectively connected to the cantilever portions, the end of the cantilever portion away from the inner mounting portion is connected to the outer mounting portion, the outer mounting portion is fixedly connected to the basin frame, a conductive pad is arranged on a side of the outer mounting portion away from the basin frame, and a conductive trace for electrically conducting the voice coil and the conductive pad is arranged on the centering support.

[0009] In one embodiment, the inner mounting portion of the centering support plate includes an inner joint portion, an elevated portion and an outer joint portion, the inner joint portion is fixedly connected to the diaphragm assembly, the two ends of the inner joint portion are respectively connected to the elevated portion, and the outer joint portion connects the cantilever portion and the elevated portion.

[0010] In one embodiment, the elevated portion of the centering support plate is arranged inclined.

[0011] In one embodiment, in the structural unit, the diaphragm assembly has a first lower protrusion protruding downward, and the first lower protrusion is connected to the external connecting portion.

[0012] In one embodiment, the structural unit further includes a secondary membrane, the diaphragm assembly has a second lower protrusion protruding downward, the secondary membrane connects the second lower protrusion and the basin frame, and the secondary membrane is arranged corresponding to the short axis side of the voice coil and away from the centering support plate.

[0013] In one embodiment, two adjacent voice coils are connected in parallel or in series.

[0014] In one embodiment, the structural unit further includes a central magnetic structure and an intermediate magnetic structure respectively arranged on the yoke, the central magnetic structure is arranged corresponding to the hollow area of ​​the voice coil, and the intermediate magnetic structure is arranged corresponding to the inner mounting portion.

[0015] In one embodiment, the structural unit also includes a side magnetic structure arranged on the yoke, the side magnetic structure is connected to the basin frame, the side magnetic structure has a clearance area for avoiding the cantilever part, a first gap is formed between the central magnetic structure and the side magnetic structure, a second gap is formed between the central magnetic structure and the middle magnetic structure, and the first gap is connected to the second gap to form a magnetic gap corresponding to the voice coil.

[0016] In one embodiment, the side magnetic structure includes side magnetic steel and a washer plate, the washer plate connects the basin frame and the side magnetic steel, and the side magnetic steel is connected to the yoke.

[0017] In one embodiment, the cantilever portion is U-shaped or S-shaped.

[0018] The beneficial effect of the utility model is that in the double-sided vibration speaker, the centering support plate is arranged between two adjacent voice coils instead of on the short axis side of the voice coil, so that the centering support plate is far away from the area with the largest rolling vibration displacement amplitude, reducing the risk of circuit breaking on the conductive line on the centering support plate, which is beneficial to extending the service life of the speaker, and reducing the total number of centering support plates used, which is beneficial to saving the manufacturing cost of the speaker and improving the market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the speaker of Embodiment 1 of the present utility model;

[0021] Figure 2 A cross-sectional view of the speaker of the first embodiment of the utility model Figure 1 ;

[0022] Figure 3 A cross-sectional view of the speaker of the first embodiment of the utility model Figure 2 ;

[0023] Figure 4 A cross-sectional view of the speaker of the first embodiment of the utility model Figure 3 ;

[0024] Figure 5 It is a structural schematic diagram of a part of the structure of the speaker of the first embodiment of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the centering support piece in the loudspeaker of the first embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] 10. Yoke iron;

[0028] 20. Structural unit; 1. Basin; 2. Magnetic component; 21. Central magnetic structure; 22. Side magnetic structure; 23. Middle magnetic structure; 231. Avoidance groove; 24. Air avoidance area; 3. Diaphragm assembly; 31. First lower protrusion; 32. Second lower protrusion; 33. Sound membrane; 34. Skeleton; 4. Centering support plate; 41. Internal mounting part; 411. Internal joint part; 412. Raised part; 413. External joint part; 42. Cantilever part; 43. External mounting part; 5. Voice coil; 6. Auxiliary membrane. DETAILED DESCRIPTION

[0029] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] In addition, if the meaning of "and / or" appears in the full text is to include three parallel solutions, taking "and / or" as an example, it includes solutions, or solutions, or and solutions that are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Embodiment 1

[0036] Please refer to Figures 1 to 6 , Embodiment 1 of the present utility model is: a speaker, comprising a yoke 10 and two structural units 20, wherein the structural units 20 are symmetrically arranged on opposite sides of the yoke 10, that is, the two structural units 20 are symmetrical about the yoke 10;

[0037] Each of the structural units 20 includes a basin frame 1, a diaphragm assembly 3, a magnetic component 2, a centering support plate 4 and a plurality of voice coils 5, wherein the magnetic component 2 is respectively connected to the basin frame 1 and the yoke 10, the magnetic component 2 has a magnetic gap arranged corresponding to the voice coil 5, the diaphragm assembly 3 is connected to the basin frame 1, and the voice coil 5 is connected to the diaphragm assembly 3; a centering support plate 4 is arranged between two adjacent voice coils 5, and the centering support plate 4 includes an inner mounting portion 41, a cantilever portion 42 and an outer mounting portion 43, the inner mounting portion 41 is connected to the diaphragm assembly 3, the two ends of the inner mounting portion 41 are respectively connected to the cantilever portion 42, the end of the cantilever portion 42 away from the inner mounting portion 41 is connected to the outer mounting portion 43, the outer mounting portion 43 is fixedly connected to the basin frame 1, a conductive pad is arranged on the side of the outer mounting portion 43 away from the basin frame 1, and a conductive trace for electrically conducting the voice coil 5 and the conductive pad is arranged on the centering support plate 4.

[0038] The centering support plate 4 may be an FPC board. Specifically, the lead wire of the voice coil 5 is welded to the bottom surface of the inner joint 411 and is connected to the conductive trace. Two adjacent voice coils 5 are connected in parallel or in series.

[0039] In detail, the inner mounting portion 41 of the centering support plate 4 includes an inner joint portion 411, an elevated portion 412 and an outer joint portion 413. The inner joint portion 411 is fixedly connected to the diaphragm assembly 3. The two ends of the inner joint portion 411 are respectively connected to the elevated portion 412. The outer joint portion 413 connects the cantilever portion 42 and the elevated portion 412. The elevated portion 412 is used to compensate for the height difference between the inner joint portion 411 and the outer joint portion 413.

[0040] Preferably, the elevated portion 412 is tilted, and in the structural unit 20, the diaphragm assembly 3 has a first lower convex portion 31 that protrudes downward, and the first lower convex portion 31 is connected to the outer joint portion 413. The elevated portion 412 is tilted to avoid the first lower convex portion 31, so that the width of the outer joint portion 413 can be set smaller, thereby leaving enough space for the cantilever portion 42.

[0041] In order to improve the rolling vibration of the voice coil 5 to a greater extent, the structural unit 20 further includes a secondary membrane 6, the diaphragm assembly 3 has a second lower protrusion 32 protruding downward, the secondary membrane 6 connects the second lower protrusion 32 and the basin frame 1, and the secondary membrane 6 is arranged corresponding to the short axis side of the voice coil 5 and away from the centering support plate 4. In this embodiment, the number of the voice coils 5 in the structural unit 20 is two, the short axis sides of the two voice coils 5 are close to each other, the centering support plate 4 is located between the two voice coils 5, and the secondary membranes 6 are respectively arranged on the outer sides of the short axis sides of the two voice coils 5 away from each other.

[0042] The diaphragm assembly 3 in the structural unit 20 includes a sound membrane 33 and a skeleton 34 connected to the sound membrane 33, wherein the skeleton 34 is used to allow the voice coil 5 to penetrate deeper into the magnetic gap to make full use of the magnetic field of the magnetic component 2, and the first lower protrusion 31 can be either a partial area of ​​the sound membrane 33 or a partial area of ​​the skeleton 34. When the diaphragm assembly 3 has a dome, the first lower protrusion 31 can also be a partial area of ​​the dome; similarly, the second lower protrusion 32 can be either a partial area of ​​the sound membrane 33 or a partial area of ​​the skeleton 34. When the diaphragm assembly 3 has a dome, the second lower protrusion 32 can also be a partial area of ​​the dome. In this embodiment, the first lower protrusion 31 and the second lower protrusion 32 are both partial areas of the skeleton 34.

[0043] Specifically, the magnetic component 2 includes a central magnetic structure 21, a side magnetic structure 22 and an intermediate magnetic structure 23 respectively arranged on the yoke 10, the central magnetic structure 21 is arranged corresponding to the hollow area of ​​the voice coil 5, the intermediate magnetic structure 23 is arranged corresponding to the inner mounting portion 41, the side magnetic structure 22 is connected to the basin frame 1, and the side magnetic structure 22 has a avoidance area 24 for avoiding the cantilever portion 42. The existence of the avoidance area 24 can prevent the cantilever portion 42 from colliding with the magnetic component 2 during deformation and generating noise; the cantilever portion 42 is U-shaped or S-shaped.

[0044] A first gap is formed between the central magnetic structure 21 and the side magnetic structure 22 , and a second gap is formed between the central magnetic structure 21 and the middle magnetic structure 23 . The first gap is connected to the second gap to form the magnetic gap corresponding to the voice coil 5 .

[0045] In this embodiment, the central magnetic structure 21 includes a lower central magnetic steel, a central washer, a first upper central magnetic steel and a second upper central magnetic steel stacked and connected in sequence, the lower central magnetic steel is connected to the yoke 10, the side magnetic structure 22 includes side magnetic steel and a washer plate, the washer plate connects the basin frame 1 and the side magnetic steel, the side magnetic steel is located below the washer plate and connected to the yoke 10, the intermediate magnetic structure 23 includes an intermediate magnetic steel, the top surface of the intermediate magnetic steel is connected to the washer plate, and the bottom surface of the intermediate magnetic steel is connected to the yoke 10.

[0046] In detail, the washer plate is provided with an avoidance groove 231, and the avoidance groove 231 is used to avoid the welding point between the lead wire of the voice coil 5 and the inner joint 411, so as to reduce the risk of collision between the lead wire and the washer plate.

[0047] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A loudspeaker, characterized in that: include yoke iron; Two structural units, the structural units are symmetrically arranged on opposite sides of the yoke; Each of the structural units includes a basin frame, a diaphragm assembly, a centering support and a plurality of voice coils, wherein the diaphragm assembly is connected to the basin frame, and the voice coil is connected to the diaphragm assembly; the centering support is arranged between two adjacent voice coils, and the centering support includes an inner mounting portion, a cantilever portion and an outer mounting portion, the inner mounting portion is connected to the diaphragm assembly, the two ends of the inner mounting portion are respectively connected to the cantilever portions, the end of the cantilever portion away from the inner mounting portion is connected to the outer mounting portion, the outer mounting portion is fixedly connected to the basin frame, a conductive pad is arranged on a side of the outer mounting portion away from the basin frame, and a conductive trace for electrically conducting the voice coil and the conductive pad is arranged on the centering support.

2. The loudspeaker according to claim 1, characterized in that: The inner mounting portion of the centering support plate includes an inner joint portion, an elevated portion and an outer joint portion, the inner joint portion is fixedly connected to the diaphragm assembly, the two ends of the inner joint portion are respectively connected to the elevated portion, and the outer joint portion connects the cantilever portion and the elevated portion.

3. The loudspeaker according to claim 2, characterized in that: The elevated portion of the centering support piece is arranged obliquely.

4. The loudspeaker according to claim 3, characterized in that: In the structural unit, the diaphragm assembly has a first lower convex portion protruding downward, and the first lower convex portion is connected to the outer connecting portion.

5. The loudspeaker according to claim 1, characterized in that: The structural unit also includes an auxiliary membrane, the diaphragm assembly has a second lower convex portion protruding downward, the auxiliary membrane connects the second lower convex portion and the basin frame, and the auxiliary membrane is arranged corresponding to the short axis side of the voice coil and away from the centering support plate.

6. The loudspeaker according to claim 1, characterized in that: Two adjacent voice coils are connected in parallel or in series.

7. The loudspeaker according to claim 1, characterized in that: The structural unit also includes a central magnetic structure and an intermediate magnetic structure respectively arranged on the yoke, the central magnetic structure is arranged corresponding to the hollow area of ​​the voice coil, and the intermediate magnetic structure is arranged corresponding to the inner mounting portion.

8. The loudspeaker according to claim 7, characterized in that: The structural unit also includes a side magnetic structure arranged on the yoke, the side magnetic structure is connected to the basin frame, the side magnetic structure has a clearance area for avoiding the cantilever part, a first gap is formed between the central magnetic structure and the side magnetic structure, a second gap is formed between the central magnetic structure and the intermediate magnetic structure, and the first gap is connected to the second gap to form a magnetic gap corresponding to the voice coil.

9. The loudspeaker according to claim 8, characterized in that: The edge magnetic structure includes edge magnetic steel and a washer plate, the washer plate connects the basin frame and the edge magnetic steel, and the edge magnetic steel is connected to the yoke.

10. The loudspeaker according to claim 1, characterized in that: The cantilever portion is U-shaped or S-shaped.

Images