Loudspeaker

Abstract

The utility model discloses a loudspeaker, which comprises a frame, a diaphragm assembly, a centering disk and a plurality of voice coils, and is characterized in that the diaphragm assembly is connected with the frame; the voice coil is connected with the vibrating diaphragm assembly; the centering support chip is arranged between two adjacent voice coils, the centering support chip comprises an inner mounting part, cantilever parts and an outer mounting part, the inner mounting part is connected with the diaphragm assembly, 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 connected with the outer mounting part. And the outer mounting part is fixedly connected with the basin stand. The centring disk is arranged between the two adjacent voice coils instead of the short-axis sides of the voice coils, so that the centring disk is far away from an area with the maximum rolling vibration displacement amplitude, the fracture risk of the centring disk is reduced, the service life of the loudspeaker is prolonged, the total number of the centring disks is reduced, the manufacturing cost of the loudspeaker is saved, and the service life of the loudspeaker is prolonged. 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] Due to space limitations, thin speakers often need to be designed with large amplitude to enhance the bass shock effect. In traditional thin large-amplitude speakers, the centering support is often set at the short axis of the speaker. When the length-to-width ratio of the speaker is large, the two ends of the short axis are often the points with the maximum rolling displacement. Especially in multi-voice coil 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. When the centering support is subjected to increased stress, the long-term operation of the speaker will bring the risk of damage to the centering support. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a large-amplitude multi-voice coil loudspeaker with a centering support that is not easily damaged.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a speaker, comprising:

[0005] basin stand;

[0006] A diaphragm assembly, wherein the diaphragm assembly is connected to the basin frame;

[0007] A plurality of voice coils, wherein the voice coils are connected to the diaphragm assembly;

[0008] A centering support plate is provided between two adjacent voice coils, and the centering support plate 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, one end of the cantilever portion away from the inner mounting portion is connected to the outer mounting portion, and the outer mounting portion is fixedly connected to the basin frame.

[0009] In one embodiment, the internal mounting portion includes an inner joint portion, an elevated portion and an outer joint portion, the inner joint portion is fixedly connected to the diaphragm assembly, both 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 is arranged inclined.

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

[0012] In one embodiment, a secondary membrane is further included, wherein 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, a conducting trace is provided on the centering support plate, the voice coil is electrically connected to the conducting trace, and a conducting pad electrically connected to the conducting trace is provided on a side of the external mounting portion away from the basin frame.

[0014] In one embodiment, two adjacent voice coils are connected in parallel or in series.

[0015] In one embodiment, it also includes a magnetic circuit assembly, which is connected to the basin frame, and has a magnetic gap corresponding to the voice coil. The magnetic circuit assembly includes a yoke and 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.

[0016] In one embodiment, the magnetic circuit component has a clearance area for avoiding the cantilever portion.

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

[0018] The beneficial effect of the utility model is that the centering support is arranged between two adjacent voice coils instead of on the short axis side of the voice coil, so that the centering support is far away from the area with the largest rolling displacement amplitude, reducing the risk of the centering support breakage, which is beneficial to extending the service life of the loudspeaker, and reducing the total number of centering supports used, which is beneficial to saving the manufacturing cost of the loudspeaker 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 This is a schematic diagram of the internal structure of the speaker according to the first embodiment of the present 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] 1. Basin stand;

[0028] 2. Magnetic circuit assembly; 21. Yoke iron; 22. Center magnetic structure; 23. Side magnetic structure; 24. Middle magnetic structure; 25. Avoidance zone;

[0029] 3. Diaphragm assembly; 31. First lower convex portion; 32. Second lower convex portion; 33. Sound membrane; 34. Frame;

[0030] 4. Centering support; 41. Internal mounting portion; 411. Internal joint portion; 412. Elevated portion; 413. External joint portion; 42. Cantilever portion; 43. External mounting portion;

[0031] 5. Voice coil;

[0032] 6. Sub-membrane. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 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 this utility model.

[0038] 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.

[0039] Embodiment 1

[0040] Please refer to Figures 1 to 6 , Embodiment 1 of the utility model is: a speaker, comprising a basin frame 1, a magnetic circuit assembly 2, a diaphragm assembly 3, a centering support 4 and a plurality of voice coils 5, wherein the diaphragm assembly 3 is respectively connected to the basin frame 1 and the voice coils 5, the magnetic circuit assembly 2 is connected to the basin frame 1, and the magnetic circuit assembly 2 has a magnetic gap corresponding to the voice coils 5; the centering support 4 is arranged between two adjacent voice coils 5, and the centering support 4 comprises an inner mounting portion 41, a cantilever portion 42 and an outer mounting portion 43, wherein the inner mounting portion 41 is connected to the diaphragm assembly 3, and the two ends of the inner mounting portion 41 are respectively connected to the cantilever portion 42, and the end of the cantilever portion 42 away from the inner mounting portion 41 is connected to the outer mounting portion 43, and the outer mounting portion 43 is fixedly connected to the basin frame 1. The centering support 4 can be an FPC board.

[0041] In detail, the inner mounting portion 41 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.

[0042] Preferably, the elevated portion 412 is tilted, and the diaphragm assembly 3 has a first lower protrusion 31 protruding downward, and the first lower protrusion 31 is connected to the outer joint portion 413. The elevated portion 412 is tilted to avoid the first lower protrusion 31, so that the width of the outer joint portion 413 can be set smaller, thereby leaving enough space for the cantilever portion 42.

[0043] In order to improve the rolling vibration of the voice coil 5 to a greater extent, the loudspeaker 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 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.

[0044] The diaphragm assembly 3 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 circuit assembly 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 spherical top, the first lower protrusion 31 can also be a partial area of ​​the spherical top; 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 spherical top, the second lower protrusion 32 can also be a partial area of ​​the spherical top. In this embodiment, the first lower protrusion 31 and the second lower protrusion 32 are both partial areas of the skeleton 34.

[0045] Optionally, a conductive trace is provided on the centering support plate 4, the voice coil 5 is electrically connected to the conductive trace, and a conductive pad electrically connected to the conductive trace is provided on a side of the external mounting portion 43 away from the basin frame 1. Specifically, the lead of the voice coil 5 is welded to the bottom surface of the inner joint 411 and is conductively connected to the conductive trace, and two adjacent voice coils 5 are connected in parallel or in series.

[0046] The magnetic circuit assembly 2 includes a yoke 21 and a central magnetic structure 22, a side magnetic structure 23 and a middle magnetic structure 24 respectively arranged on the yoke 21, the central magnetic structure 22 is arranged corresponding to the hollow area of ​​the voice coil 5, the middle magnetic structure 24 is arranged corresponding to the inner mounting portion 41, and the magnetic gap includes a first gap located between the central magnetic structure 22 and the side magnetic structure 23 and a second gap located between the central magnetic structure 22 and the middle magnetic structure 24, and the first gap is connected with the second gap to form a ring-shaped magnetic gap.

[0047] The magnetic circuit component 2 has a clearance area 25 for avoiding the cantilever part 42. The existence of the clearance area 25 can prevent the cantilever part 42 from colliding with the magnetic circuit component 2 during deformation and generating noise; the cantilever part 42 is U-shaped or S-shaped.

[0048] In this embodiment, the central magnetic structure 22 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 from bottom to top, the lower central magnetic steel is connected to the yoke 21, the side magnetic structure 23 includes side magnetic steel and a washer plate, the washer plate connects the basin frame and the side magnetic steel, the side magnetic steel is located below the washer plate and connected to the yoke, the middle magnetic structure includes a middle magnetic steel, the top surface of the middle magnetic steel is connected to the washer plate, and the bottom surface of the middle magnetic steel is connected to the yoke.

[0049] 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 basin stand; A diaphragm assembly, wherein the diaphragm assembly is connected to the basin frame; A plurality of voice coils, wherein the voice coils are connected to the diaphragm assembly; A centering support plate is provided between two adjacent voice coils, and the centering support plate 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, one end of the cantilever portion away from the inner mounting portion is connected to the outer mounting portion, and the outer mounting portion is fixedly connected to the basin frame.

2. The loudspeaker according to claim 1, characterized in that: The inner mounting portion includes an inner joint portion, an elevated portion and an outer joint portion. The inner joint portion is fixedly connected to the diaphragm assembly, 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 is arranged inclined.

4. The loudspeaker according to claim 3, characterized in that: The diaphragm assembly has a first lower protrusion protruding downward, and the first lower protrusion is connected to the outer connecting part.

5. The loudspeaker according to claim 1, characterized in that: It also includes an auxiliary membrane, the diaphragm assembly has a second lower protrusion protruding downward, the auxiliary membrane connects the second lower protrusion 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: The centering support plate is provided with a conducting wire, the voice coil is electrically connected to the conducting wire, and a conducting pad electrically connected to the conducting wire is provided on a side of the external mounting portion away from the basin frame.

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

8. The loudspeaker according to claim 1, characterized in that: It also includes a magnetic circuit component, which is connected to the basin frame, and has a magnetic gap corresponding to the voice coil. The magnetic circuit component includes a yoke and 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.

9. The loudspeaker according to claim 8, characterized in that: The magnetic circuit assembly has a clearance area for evacuating the cantilever portion.

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

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