Loudspeaker and loudspeaker box

Abstract

A loudspeaker, comprising a basket, a vibration system that is fixed on the basket, and a magnetic circuit system that drives the vibration system to vibrate. The basket surrounds the magnetic circuit system, and the basket and the magnetic circuit system are arranged at an interval in a vibration direction perpendicular to the vibration system. The loudspeaker further comprises a damper that surrounds the magnetic circuit system. The damper connects the magnetic circuit system onto the basket to suspend the magnetic circuit system. The damper comprises a damping elastic member, and the damping elastic member is provided with a preset rigidity and a preset damping that enable the magnetic circuit system to move relative to the basket. The present invention further provides a loudspeaker box. In the loudspeaker and the loudspeaker box provided by the present invention, by means of the damping elastic member provided with a preset rigidity and a preset damping, the magnetic circuit system can move relative to the basket, and the damping elastic member is used to suppress the movement of the magnetic circuit system, thus achieving the purpose of shock absorption.

Description

Speakers and speaker boxes Technical Field

[0001] The present invention relates to the field of electroacoustics, and in particular to a loudspeaker and a loudspeaker box. Background Art

[0002] With the advent of the mobile internet era, the number of smart mobile devices continues to rise. Among these devices, mobile phones are undoubtedly the most common and portable. Currently, mobile phones have a wide variety of functions, one of which is high-quality music playback. Therefore, speakers for playing sound are widely used in today's smart mobile devices.

[0003] Speakers in the related art include a frame, a vibration system secured to the frame, and a magnetic circuit system that drives the vibration system. However, these speakers have poor shock resistance. For example, if they are subjected to strong impacts such as being dropped, they can be damaged by inertia, reducing their reliability.

[0004] Therefore, it is necessary to study a loudspeaker with a new structure. Summary of the Invention

[0005] The present invention aims to solve the problem of poor anti-vibration effect of loudspeakers and provides a novel shock-absorbing loudspeaker and loudspeaker box.

[0006] To achieve the above-mentioned objectives, the present invention provides a loudspeaker, comprising a basin, a vibration system fixed to the basin, and a magnetic circuit system that drives the vibration system to vibrate, the basin surrounding the magnetic circuit system, and the basin and the magnetic circuit system are spaced apart along a vibration direction perpendicular to the vibration system, the loudspeaker also comprising a buffer arranged around the magnetic circuit system, the buffer connecting the magnetic circuit system to the basin to suspend the magnetic circuit system, the buffer comprising a damping elastic member having a preset stiffness and preset damping that enables the magnetic circuit system to move relative to the basin.

[0007] As an improvement, a plurality of the damping elastic members are spaced apart along the circumferential direction of the magnetic circuit system, and the plurality of the damping elastic members are axially symmetrically arranged.

[0008] As an improvement, the damping elastic member is a continuous ring structure, and the damping elastic member is arranged around the magnetic circuit system.

[0009] As an improvement, the buffer further includes a rigid member, wherein:

[0010] The rigid member is provided between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and,

[0011] The rigid component is provided on a side of the damping elastic component facing away from the magnetic circuit system, and the rigid component connects the damping elastic component and the basin frame.

[0012] As an improvement, a plurality of fixing holes are provided through the rigid member, and the damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

[0013] As an improvement, the magnetic circuit system includes a magnetic bowl, which includes a magnetic conductive plate and a side plate extending from the magnetic conductive plate toward the vibration system, and at least the side plate of the side plate and the magnetic conductive plate is connected to the buffer.

[0014] As an improvement, the magnetic circuit system includes a magnetic conductive plate, a main magnetic part fixed on the magnetic conductive plate, and a secondary magnetic part arranged around the main magnetic part and separated from the main magnetic part to form a magnetic gap, wherein at least the secondary magnetic part among the secondary magnetic part and the magnetic conductive plate is connected to the buffer.

[0015] As an improvement, the secondary magnetic part includes a secondary magnet fixed on the magnetic conductive plate and a secondary pole core fixed on the side of the secondary magnet away from the magnetic conductive plate, and both the secondary magnet and the secondary pole core are connected to the buffer.

[0016] As an improvement, the auxiliary magnet includes two first auxiliary magnets spaced apart along a first direction, the first auxiliary magnets are connected to the buffer, and the first direction is perpendicular to the vibration direction.

[0017] The present invention also provides a speaker box, which includes a shell having a receiving space, and the speaker box also includes a speaker as described above assembled into the shell, the basin frame is fixed to the shell, and the shell includes a bottom plate, and the bottom plate is abutted or spaced apart from the magnetic circuit system along the vibration direction of the vibration system.

[0018] As an improvement, the buffer controls the absolute value of the difference between the resonant frequency of the magnetic circuit system and the resonant frequency of the speaker box to be within a range of less than 100 Hz.

[0019] The present invention also provides a speaker box, which includes a shell having a receiving space and a speaker assembled into the shell, the shell including a bottom plate with a window extending therethrough, the speaker including a basin fixed to the shell, a vibration system fixed to the basin, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system having a magnetic conductive plate arranged in the window, the basin surrounding the magnetic circuit system, and the basin and the magnetic circuit system are spaced apart along a vibration direction perpendicular to the vibration system, the speaker also includes a buffer arranged around the magnetic circuit system, the buffer connects the magnetic circuit system to the basin to suspend the magnetic circuit system, wherein the basin is also fixed to the bottom plate, and the basin, the buffer and the magnetic circuit system jointly seal the window, the buffer includes a damping elastic member in a continuous annular structure and arranged around the magnetic circuit system, the damping elastic member having a preset stiffness and preset damping that allows the magnetic circuit system to move relative to the basin.

[0020] As an improvement, the buffer controls the absolute value of the difference between the resonant frequency of the magnetic circuit system and the resonant frequency of the speaker box to be within a range of less than 100 Hz.

[0021] As an improvement, the buffer further comprises a rigid member in a continuous ring structure, wherein:

[0022] The rigid member is provided between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and,

[0023] The rigid component is provided on a side of the damping elastic component facing away from the magnetic circuit system, and the rigid component connects the damping elastic component and the basin frame.

[0024] As an improvement, a plurality of fixing holes are provided through the rigid member, and the damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

[0025] As an improvement, the magnetic circuit system includes a magnetic bowl, which includes the magnetic conductive plate and a side plate extending from the magnetic conductive plate toward the vibration system, and the side plate is connected to the buffer.

[0026] The present invention also provides a speaker box, which includes a shell having a receiving space and a speaker assembled into the shell, the shell including a bottom plate with a window extending therethrough, the speaker including a basin fixed to the shell, a vibration system fixed to the basin, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system having a magnetic conductive plate arranged in the window, the basin being spaced apart from the bottom plate, the basin surrounding the magnetic circuit system, and the basin and the magnetic circuit system being spaced apart along a vibration direction perpendicular to the vibration system, the speaker also including a buffer arranged around the magnetic circuit system, the buffer connecting the magnetic circuit system to the bottom plate to suspend the magnetic circuit system, wherein the buffer and the magnetic circuit system seal the window, the buffer including a damping elastic member in a continuous annular structure and arranged around the magnetic circuit system, the damping elastic member having a preset stiffness and preset damping that allows the magnetic circuit system to move relative to the basin.

[0027] As an improvement, the buffer controls the absolute value of the difference between the resonant frequency of the magnetic circuit system and the resonant frequency of the speaker box to be within a range of less than 100 Hz.

[0028] As an improvement, the buffer is further inserted into the gap between the magnetic conductive plate and the bottom plate, and the surfaces of the bottom plate facing the magnetic conductive plate are respectively connected to and sealed with the buffer.

[0029] As an improvement, the buffer further comprises a rigid member in a continuous ring structure, wherein:

[0030] The rigid member is provided between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and,

[0031] The rigid component is provided on a side of the damping elastic component facing away from the magnetic circuit system, and the rigid component connects the damping elastic component and the bottom plate.

[0032] As an improvement, a plurality of fixing holes are provided through the rigid member, and the damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

[0033] As an improvement, the magnetic circuit system includes a magnetic bowl, which includes the magnetic conductive plate and a side plate extending from the magnetic conductive plate toward the vibration system, and the side plate is connected to the buffer.

[0034] As an improvement, the magnetic circuit system includes the magnetic conductive plate, a main magnetic part fixed on the magnetic conductive plate, and a secondary magnetic part arranged around the main magnetic part and separated from the main magnetic part to form a magnetic gap. The damping elastic part includes a buffer body connected to the secondary magnetic part and in a ring shape, a connecting body extending inward from the buffer body, and a flange extending outward from the buffer body. The edge of the magnetic conductive plate is buried in the connecting body, and the flange is fixed on the side surface of the bottom plate facing the receiving space.

[0035] As an improvement, the buffer further includes a rigid member connected to the buffer body, and the flange is clamped between the bottom plate and the rigid member.

[0036] As an improvement, a plurality of fixing holes are formed through the rigid member, and the damping elastic member further includes a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

[0037] As an improvement, the edge of the magnetic conductive plate is divided into a plurality of first buried areas arranged at intervals and a second buried area connecting two adjacent first buried areas. The first buried area is penetrated by a first reinforcement hole filled with the connecting body. The second buried area extends toward the vibration system to form a reinforcement body. The reinforcement body is penetrated by a second reinforcement hole filled with the buffer body.

[0038] As an improvement, the buffer is spaced apart from the basin frame.

[0039] As an improvement, the buffer is also connected to the basin frame.

[0040] The beneficial effects of the present invention are: the magnetic circuit system can move relative to the basin frame through the damping elastic member with preset stiffness and preset damping, and the movement of the magnetic circuit system is suppressed by the damping elastic member, thereby achieving the purpose of speaker shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] FIG1 is a schematic structural diagram of a speaker box according to a first embodiment of the present invention.

[0042] FIG2 is a top view of the speaker box shown in FIG1 after the buffer and the magnetic bowl are connected.

[0043] FIG3 is a schematic structural diagram of a speaker box according to a second embodiment of the present invention.

[0044] FIG4 is a perspective view of a buffer in the speaker box shown in FIG3.

[0045] FIG5 is an exploded perspective view of the buffer shown in FIG4 .

[0046] FIG6 is a perspective view of a buffer in a speaker box according to a third embodiment of the present invention.

[0047] FIG7 is a top view of the buffer in the speaker box according to the fourth embodiment of the present invention.

[0048] FIG8 is a schematic structural diagram of a speaker box according to a fifth embodiment of the present invention.

[0049] FIG9 is a schematic structural diagram of a speaker box according to a sixth embodiment of the present invention.

[0050] FIG10 is a schematic structural diagram of a speaker box according to a seventh embodiment of the present invention.

[0051] FIG11 is a three-dimensional exploded view of the speaker in the speaker box according to the eighth embodiment of the present invention.

[0052] FIG12 is a perspective view of the first diaphragm in the loudspeaker shown in FIG11 .

[0053] FIG13 is a perspective view of the frame of the speaker shown in FIG11.

[0054] FIG. 14 is a perspective view of the assembled speaker shown in FIG. 11 .

[0055] FIG15 is a cross-sectional view of the loudspeaker shown in FIG14 along the AA direction.

[0056] FIG16 is a cross-sectional view of the loudspeaker shown in FIG14 along the BB direction.

[0057] FIG17 is a schematic structural diagram of a speaker box according to a ninth embodiment of the present invention.

[0058] FIG18 is an enlarged view of portion A of the speaker box shown in FIG17 .

[0059] FIG19 is a perspective view of the assembled buffer and magnetic conductive plate in section A shown in FIG18 .

[0060] FIG20 is a perspective exploded view of the assembly structure shown in FIG19. DETAILED DESCRIPTION

[0061] The present invention will be described in detail below with reference to FIG. 1 to FIG. 20 .

[0062] 1 and 2 , the speaker box of the first embodiment includes a housing 20 having a receiving space 20A and a speaker 10 assembled in the housing 20 .

[0063] The housing 20 includes a bottom plate 201. As shown in FIG1 , the bottom plate 201 is in the shape of a complete flat plate.

[0064] The loudspeaker 10 includes a frame 1 fixed to a housing 20 , a vibration system 2 fixed to the frame 1 , a magnetic circuit system 3 driving the vibration system 2 to vibrate, and a buffer 4 .

[0065] The basin frame 1 surrounds the magnetic circuit system 3, and the basin frame 1 and the magnetic circuit system 3 are spaced apart along the vibration direction X perpendicular to the vibration system 2. The buffer 4 is arranged around the magnetic circuit system 3, and the buffer 4 connects the magnetic circuit system 3 to the basin frame 1 to suspend the magnetic circuit system 3.

[0066] In this embodiment, buffer 4 controls the absolute value of the difference between the resonant frequency of magnetic circuit system 3 and the resonant frequency of the speaker enclosure to less than 100 Hz. The smaller the absolute value of the difference between the resonant frequency of the magnetic circuit system and the resonant frequency of the speaker enclosure, the better the vibration reduction effect of the speaker and the speaker enclosure.

[0067] As shown in FIG. 1 , the vibration system 2 includes a diaphragm 21 fixed to a frame 1 and a voice coil 23 connected to the diaphragm 21 and driving the diaphragm 21 to vibrate.

[0068] As shown in FIG. 1 , the magnetic circuit system 3 includes a magnetic bowl 31 and a magnetic portion 33 .

[0069] The magnetic bowl 31 includes a magnetic plate 311 and side panels 313 extending from the plate 311 toward the vibration system 2. The magnetic portion 33 is fixed to the plate 311. The side panels 313 and the magnetic portion 33 form a magnetic gap 3A. The voice coil 23 is inserted into the magnetic gap 3A. At least the side panels 313 of the magnetic plate 311 and the side panels 313 are connected to the buffer 4. When power is supplied to the voice coil 23, the magnetic circuit system 3 drives the voice coil 23 to vibrate along the vibration direction X, thereby driving the diaphragm 21 to vibrate along the vibration direction X.

[0070] The side plate 313 is an annular structure. The annular side plate 313 can be cylindrical or frame-shaped. In this regard, the present invention does not specifically limit the shape of the side plate 313.

[0071] The magnetic portion 33 includes a magnetic steel 331 fixed on the magnetic conductive plate 311 and a pole core 333 fixed on a side of the magnetic steel 331 away from the magnetic conductive plate 311 .

[0072] The pole core 333 is made of a magnetically conductive material, thereby enhancing the magnetic flux in the magnetic gap 3A.

[0073] In this embodiment, the buffer 4 only includes the damping elastic member 41. That is, the damping elastic member 41 alone serves as a buffer.

[0074] The damping elastic member 41 has a preset stiffness and damping that allows the magnetic circuit system 3 to move in any direction relative to the frame 1. The preset stiffness of the damping elastic member 41 allows the magnetic circuit system 3 to be suspended under the connection of the damping elastic member 41. The damping elastic member 41 also has a preset damping that allows the magnetic circuit system 3 to move relative to the frame 1 due to inertia when the loudspeaker 10 is impacted, causing the damping elastic member 41 to elastically deform. The deformation force generated by the damping elastic member 41 in turn suppresses the movement of the magnetic circuit system 3, thereby achieving the purpose of reducing vibration of the loudspeaker 10.

[0075] The damping elastic member 41 can be made of polymer materials such as silicone and rubber, and the material type and size of the damping elastic member 41 can be selected to make the damping elastic member 41 have different preset stiffness and preset damping. The damping elastic member 41 with different preset stiffness and preset damping can match different speakers 10, thereby achieving different shock absorption performance.

[0076] It should also be noted that the material type and size of the damping elastic member 41 can be selected so that the buffer 4 can control the absolute value of the difference between the resonant frequency of the magnetic circuit system 3 and the resonant frequency of the speaker box to be within a range of less than 100 Hz.

[0077] In this embodiment, the buffer 4 is composed of a plurality of damping elastic members 41 arranged at intervals along the circumferential direction of the side plate 313 , and the plurality of damping elastic members 41 are arranged axially symmetrically.

[0078] As shown in FIG. 2 , four damping elastic members 41 are provided and distributed in a rectangular shape. Accordingly, the side plate 313 is a frame-shaped ring structure.

[0079] The housing 20 includes a bottom plate 201 , which is arranged in contact with or spaced apart from the magnetic conductive plate 311 of the magnetic circuit system 3 along the vibration direction X of the vibration system 2 .

[0080] As shown in Figure 1, the bottom plate 201 is spaced apart from the magnetic conductive plate 311. The bottom plate 201 is a complete flat plate, which allows the housing 20, the basin frame 1 and the diaphragm 21 to enclose a closed rear cavity, thereby achieving sealing of the rear cavity of the speaker box.

[0081] Please refer to FIG. 3 to FIG. 5 . The difference between the speaker box of the second embodiment and the speaker box of the first embodiment is that the buffer 4 further includes a rigid member 43 .

[0082] A rigid member 43 is provided between the damping elastic member 41 and the magnetic circuit system 3 , and the rigid member 43 connects the damping elastic member 41 and the magnetic circuit system 3 . The side plate 313 of the magnetic bowl 31 is connected to the rigid member 43 to achieve the connection between the rigid member 43 and the magnetic circuit system 3 .

[0083] The side panels 313 and the rigid component 43 may be connected by gluing or welding.

[0084] A rigid member 43 is provided on the side of the damping elastic member 41 facing away from the magnetic circuit system 3 , and the rigid member 43 connects the damping elastic member 41 and the basin frame 1 .

[0085] The connection between the rigid member 43 and the basin frame 1 can be fixed by gluing or welding.

[0086] In this embodiment, a plurality of fixing holes 431 are formed through the rigid member 43 . The damping elastic member 41 includes a buffer body 411 fixed to the rigid member 43 and a filling body 413 extending from the buffer body 411 into the fixing holes 431 and filling the fixing holes 431 .

[0087] Further preferably, the fixing hole 431 is tapered, and along the direction from the rigid component 43 to the buffer body 411 , the diameter of the fixing hole 431 at one end close to the buffer body 411 is smaller than the diameter of the end away from the buffer body 411 .

[0088] The buffer 4 configured in this way can be manufactured through an integral molding process, and can also improve the connection strength between the rigid component 43 and the damping elastic component 41 .

[0089] It should be noted that, in other embodiments, the rigid part 43 may be provided only between the damping elastic part 41 and the magnetic circuit system 3, or the rigid part 43 may be provided only on the side of the damping elastic part 41 facing away from the magnetic circuit system 3; the rigid part may also not be provided with a fixing hole, and accordingly, the damping elastic part does not include a filling body, that is, the facing surfaces of the rigid part and the damping elastic part are both complete planes.

[0090] Please refer to FIG. 6 . The difference between the speaker box of the third embodiment and the speaker box of the first embodiment is that the buffer 4 is composed of a damping elastic member 41 having a continuous annular structure. The damping elastic member 41 is disposed around the magnetic circuit system 3 .

[0091] Please refer to FIG. 7 . The only difference between the speaker box of the fourth embodiment and the speaker box of the second embodiment is that the damping elastic member 41 and the rigid member 43 are both continuous annular structures.

[0092] It should be noted that the buffer can also be configured such that only one of the damping elastic member and the rigid member is a continuous annular structure, and the other member is provided in plurality along the circumference of the magnetic circuit system.

[0093] Referring to Figure 8 , the speaker enclosure of Example 5 differs only from the speaker enclosures of Examples 4 and 3 in that a window 203 is provided through the bottom plate 201, and a magnetic conductive plate 311 is positioned within the window 203, exposing the magnetic conductive plate 311. The frame 1 is fixed to the bottom plate 201, and the frame 1, along with the continuous annular buffer 4 and the magnetic circuit system 3, seal the window 203. This arrangement allows the housing 20, buffer 4, frame 1, magnetic bowl 31, and diaphragm 21 to enclose a closed rear cavity, thereby sealing the rear cavity of the speaker enclosure. Furthermore, since the magnetic conductive plate 311 is positioned within the window 203, the dimensions of the speaker enclosure in the vibration direction X can be reduced.

[0094] Specifically, a seal is formed between the basin frame 1 and the bottom plate 201, the buffer 4 with a continuous ring structure is connected to the basin frame 1 and forms a seal, and the buffer 4 with a continuous ring structure is connected to the side plate 313 of the magnetic circuit system 3 and forms a seal, so that the basin frame 1, the buffer 4 with a continuous ring structure and the magnetic circuit system 3 jointly seal the window 203.

[0095] Please refer to FIG9 . The difference between the speaker box of the sixth embodiment and the speaker box of the fifth embodiment is only that:

[0096] The basin frame 1 is spaced apart from the bottom plate 201 .

[0097] The buffer 4 further connects the magnetic circuit system 3 to the bottom plate 201 to suspend the magnetic circuit system 3 , wherein the buffer 4 and the magnetic circuit system 3 seal the window 203 .

[0098] In this embodiment, the buffer 4 is inserted between the magnetic conductive plate 311 and the bottom plate 201 , and the surfaces of the bottom plate 201 and the magnetic conductive plate 311 facing each other are respectively connected to the buffer 4 and sealed, so that the buffer 4 and the magnetic circuit system 3 seal the window 203 .

[0099] Such an arrangement allows the housing 20, the buffer 4, the basin frame 1, the magnetic bowl 31 and the diaphragm 21 to jointly enclose and form a closed rear cavity, thereby achieving sealing of the rear cavity of the speaker box.

[0100] Please refer to FIG. 10 . The difference between the speaker box of the seventh embodiment and the speaker box of the sixth embodiment is that the buffer 4 and the basin frame 1 are spaced apart.

[0101] Please refer to FIG. 11 to FIG. 16 . The difference between the speaker box of the eighth embodiment and the speaker box of the second embodiment is only that the specific structure of the speaker 30 is different from the specific structure of the speaker 10 .

[0102] The speaker 30 includes a frame 5 fixed to the housing 20 , a vibration system 6 fixed to the frame 5 , a magnetic circuit system 7 driving the vibration system 6 to vibrate, and a buffer 8 .

[0103] Among them, the basin frame 5 surrounds the magnetic circuit system 7, and the basin frame 5 and the magnetic circuit system 7 are spaced apart along the vibration direction X perpendicular to the vibration system 6. The buffer 4 is arranged around the magnetic circuit system 7, and the buffer 4 connects the magnetic circuit system 7 to the basin frame 5 to suspend the magnetic circuit system 7.

[0104] As shown in FIG11 , the basin frame 5 is rectangular.

[0105] In this embodiment, the buffer 8 is the buffer of the second embodiment shown in Figures 4 and 5. It is understood that in other embodiments, the buffer 8 is the buffer of the first embodiment shown in Figure 2, or the buffer of the third embodiment shown in Figure 6, or the buffer of the fourth embodiment shown in Figure 7.

[0106] The magnetic circuit system 7 includes a magnetic conductive plate 71, a main magnetic portion 73 fixed on the magnetic conductive plate 71, and a secondary magnetic portion 75 arranged around the main magnetic portion 73 and separated from the main magnetic portion 73 to form a magnetic gap 7A, wherein the secondary magnetic portion 75 and at least the secondary magnetic portion 75 in the magnetic conductive plate 71 are connected to the buffer 8.

[0107] In this embodiment, the auxiliary magnetic portion 75 and the magnetic conductive plate 71 are both connected to the buffer 8 , thereby enhancing the connection strength between the magnetic circuit system 7 and the buffer 8 .

[0108] In this embodiment, the main magnetic portion 73 has a rectangular structure and includes a first main magnet 731 fixed to the magnetic conductive plate 71, a main pole core 733 fixed to the side of the first main magnet 731 away from the magnetic conductive plate 71, a second main magnet 735 fixed to the side of the main pole core 733 away from the first main magnet 731, and a third main magnet 737 fixed to the side of the second main magnet 735 away from the main pole core 733.

[0109] The third main magnet 737 divides the second main magnet 735 into a central region 73A for fixing the third main magnet 737 and an edge region 73B disposed around the central region 73A. The vibration system 6 is also fixed to the edge region 73B.

[0110] It should be noted that, in other embodiments, the second main magnet 735 and the third main magnet 737 may also be configured as an integrally formed magnet.

[0111] The secondary magnetic part 75 includes a secondary magnet 751 fixed on the magnetic conductive plate 71 and a secondary pole core 753 fixed on the side of the secondary magnet 751 away from the magnetic conductive plate 71 . Both the secondary magnet 751 and the secondary pole core 753 are connected to the buffer 8 .

[0112] The secondary pole core 753 is annular in structure, and the primary pole core 733 is located in the through hole of the secondary pole core 753 .

[0113] The main pole core 733 and the secondary pole core 753 are both made of magnetic conductive material, thereby enhancing the magnetic flux in the magnetic gap 7A.

[0114] In this embodiment, the secondary magnet 751 includes two first secondary magnets 755 spaced apart along the first direction Y and two second secondary magnets 757 spaced apart along the second direction Z.

[0115] The first secondary magnet 755 is connected to the buffer 8 .

[0116] The first direction Y is perpendicular to the vibration direction X.

[0117] As shown in FIG. 14 , FIG. 15 and FIG. 16 , the first direction Y is the short-axis direction of the speaker 30 , and the second direction Z is the long-axis direction of the speaker 30 .

[0118] It should be noted that the first main magnet 731 , the second main magnet 735 , the third main magnet 737 , the first secondary magnet 755 and the second secondary magnet 757 are preferably magnetic steel.

[0119] The vibration system 6 includes a diaphragm 61 fixed to the frame 5, a voice coil 63 inserted into the magnetic gap 7A and driving the diaphragm 61 to vibrate, and an elastic support member 65. A frame 9 is fixed to the side of the diaphragm 61 facing the magnetic circuit system 7, and the voice coil 63 and elastic support member 65 are respectively connected to the frame 9. The voice coil 63 is electrically connected to an external circuit. When energized, it vibrates under the influence of the magnetic circuit system 7. Simultaneously, the voice coil 63 drives the diaphragm 61, the elastic support member 65, and the frame 9 to vibrate. The elastic support member 65 supports the voice coil 63. As shown in Figures 11 and 16, two elastic support members 65 are provided, spaced apart along the second direction Z (i.e., an elastic support member 65 is provided on the side of the second secondary magnet 757 facing away from the main magnetic portion 73). The support provided by the elastic support members 65 limits the swaying of the voice coil 63 along its longitudinal axis, thereby improving the pure sound quality of the speaker.

[0120] The skeleton 9 includes a substrate 91 which is annular and arranged around the main magnetic part 73, a first connecting part 93 extending from the outer periphery of the substrate 91 in a direction away from the diaphragm 61, and a second connecting part 95 extending from the inner periphery of the substrate 91 in a direction away from the diaphragm 61. The voice coil 63 is fixed to one end of the second connecting part 95 away from the diaphragm 61, and one end of the elastic support member 65 is fixed to the basin frame 5, and the other end thereof is fixed to the first connecting part 93.

[0121] The diaphragm 61 includes a first diaphragm 611 and a second diaphragm 613 disposed around the first diaphragm 611 and fixed to the frame 5 .

[0122] The first diaphragm 611 includes a rim portion 615, a fixing portion 616 extending outward from the rim portion 615, and a coupling portion 617 extending inward from the rim portion 615. The coupling portion 617 is fixed to the edge region 73B and is fixedly connected to the third main magnet 737 by enclosing the third main magnet 737, thereby increasing the coupling force between the first diaphragm 611 and the main magnetic portion 73. The rim portion 615 protrudes in a direction away from the magnetic circuit system 7.

[0123] As shown in Figures 15 and 16 , the inner periphery of the second diaphragm 613 and the fixing portion 616 of the first diaphragm 611 are respectively fixed to the substrate 91 (i.e., the first diaphragm 611 and the second diaphragm 613 are connected via the substrate 91 of the skeleton 9). It will be appreciated that in other embodiments, the diaphragm 61 may further include a dome, and the inner periphery of the second diaphragm 613 and the fixing portion 616 of the first diaphragm 611 are respectively fixed to the dome (i.e., the first diaphragm 611 and the second diaphragm 613 are connected via the dome), and the dome is connected to the substrate.

[0124] In this embodiment, the elastic support member 65 includes a flexible circuit board 67 and an auxiliary diaphragm 69 stacked along the vibration direction of the diaphragm 61. The flexible circuit board 67 is fixed to the frame 5, and the auxiliary diaphragm 69 is fixed to the side of the flexible circuit board 67 facing away from the frame 5. The voice coil 63 is electrically connected to the external circuit via the flexible circuit board 67. When the sound-generating device is operating, the electrical signal from the external circuit is transmitted to the voice coil 63 via the flexible circuit board 67.

[0125] It is understood that the arrangement of the elastic support member is not limited to this. For example, in other embodiments, the elastic support member can also be arranged so that the auxiliary diaphragm is fixed to the basin frame 5 and the flexible circuit board 67 is fixed to the side of the auxiliary diaphragm 69 facing away from the basin frame 5; or the elastic support member 65 can also be arranged to include only the flexible circuit board.

[0126] It is understandable that, in other embodiments, the auxiliary magnetic part may be arranged in the following manner:

[0127] The secondary magnet may include only two first secondary magnets spaced apart along the first direction;

[0128] The two first secondary magnets and the two second secondary magnets may also be replaced by magnets in a ring structure;

[0129] When there are two first secondary magnets or / and two second secondary magnets, the secondary pole cores may also be provided as a plurality of secondary pole cores fixedly mounted on the secondary magnets in a one-to-one correspondence.

[0130] It can be understood that in the embodiment of "the secondary magnet includes two first secondary magnets and two second secondary magnets, or the two first secondary magnets and the two second secondary magnets are replaced by magnets with an annular structure", the vibration system can also be provided with no elastic support member, and accordingly, buffers connecting the secondary magnetic part and the basin frame can be provided on opposite sides of the long axis direction of the magnetic circuit system.

[0131] Please refer to FIG. 17 to FIG. 20 , the difference between the speaker box of the ninth embodiment and the speaker box of the eighth embodiment is only that:

[0132] The housing 20 includes a bottom plate 201 with a window 203 extending therethrough.

[0133] The magnetic conductive plate 71 is disposed in the window 203 so that the magnetic conductive plate 71 is exposed.

[0134] In this embodiment, the buffer 8 includes a damping elastic member 81 and a rigid member 83. The damping elastic member 81 includes an annular buffer body 811 connected to the secondary magnetic portion 75, a connector 813 extending inward from the buffer body 811, and a flange 815 extending outward from the buffer body 811. The edge of the magnetic conductive plate 71 is embedded in the connector 813, and the flange 815 is fixed to the side surface of the bottom plate 201 facing the receiving space 20A. The rigid member 83 connects the buffer body 811 and the basin frame 5, and the flange 815 is clamped between the bottom plate 201 and the rigid member 83. In this way, the buffer 8 can connect the basin frame 5 and the magnetic circuit system 7 while also connecting the bottom plate 201 and the magnetic conductive plate 71, thereby achieving a sealing and shock-absorbing effect.

[0135] In this embodiment, a fixing hole 831 is formed through the rigid member 83 , and the damping elastic member 81 further includes a filling body 817 extending from the buffer body 811 into the fixing hole 831 and filling the fixing hole 831 .

[0136] As shown in Figure 20, the dotted line B divides the edge of the magnetic conductive plate 71 into a plurality of first buried areas 711 arranged at intervals and a second buried area 713 connecting two adjacent first buried areas 711. The first buried area 711 is penetrated by a first reinforcement hole 715 filled with a connecting body 813. The second buried area 713 extends toward the vibration system 6 to form a reinforcement body 716. The reinforcement body 716 is penetrated by a second reinforcement hole 717 filled with a buffer body 811.

[0137] It can be understood that in other embodiments, the buffer may also include only a damping elastic member, and accordingly, the flange may be arranged to be clamped between the base plate and the basin frame; the rigid member may also be a continuous annular structure, and the rigid member is arranged around the buffer body; the secondary magnetic part and the buffer body may also be indirectly connected through a rigid member; the buffer 4 may also be arranged at a distance from the basin frame 1.

[0138] It should also be noted that, in other embodiments, the magnetic circuit system in Example 5 can also be configured to include a magnetic conductive plate, a main magnetic part fixed on the magnetic conductive plate, and a secondary magnetic part spaced apart from the main magnetic part to form a magnetic gap, and the secondary magnetic part is connected to the buffer. Accordingly, in order to ensure that the basin frame, the buffer with a continuous annular structure and the magnetic circuit system jointly seal the window, at least the secondary magnetic steel in the secondary magnetic part is a continuous annular structure so that a seal is formed after the secondary magnetic part is connected to the buffer.

[0139] It should also be noted that, in other embodiments, the magnetic circuit system and the vibration system in the sixth and seventh embodiments may also be replaced by the magnetic circuit system and the vibration system in the eighth embodiment.

[0140] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A loudspeaker, comprising a chassis, a vibration system fixed to the chassis, and a magnetic circuit system for driving the vibration system to vibrate, characterized in that: The basin frame surrounds the magnetic circuit system, and the basin frame and the magnetic circuit system are arranged at intervals in a direction perpendicular to the vibration direction of the vibration system. The loudspeaker further includes a buffer arranged around the magnetic circuit system, and the buffer connects the magnetic circuit system to the basin frame to suspend the magnetic circuit system. The buffer includes a damping elastic member, and the damping elastic member has a preset stiffness and a preset damping that enable the magnetic circuit system to move relative to the basin frame.

2. The loudspeaker according to claim 1, wherein: A plurality of the damping elastic members are arranged at intervals in the circumferential direction of the magnetic circuit system, and the plurality of damping elastic members are axially symmetrically arranged.

3. The loudspeaker according to claim 1, wherein: The damping elastic member has a continuous annular structure, and the damping elastic member surrounds the magnetic circuit system.

4. The loudspeaker according to claim 2 or 3, characterized in that: The buffer further includes a rigid member, wherein, The rigid member is arranged between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and, The rigid member is arranged on a side of the damping elastic member facing away from the magnetic circuit system, and the rigid member connects the damping elastic member and the basin frame.

5. The loudspeaker according to claim 4, characterized in that: A plurality of fixing holes are formed through the rigid member, and the damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

6. The loudspeaker according to claim 1, wherein: The magnetic circuit system includes a magnetic bowl, and the magnetic bowl includes a magnetic conductive plate and a side plate extending from the magnetic conductive plate in the direction of the vibration system. At least the side plate of the side plate and the magnetic conductive plate is connected to the buffer.

7. The loudspeaker according to claim 1, characterized in that: The magnetic circuit system includes a magnetic conductive plate, a main magnetic part fixed on the magnetic conductive plate, and a sub-magnetic part arranged around the main magnetic part and spaced from the main magnetic part to form a magnetic gap. Among them, at least the sub-magnetic part of the sub-magnetic part and the magnetic conductive plate is connected to the buffer.

8. The loudspeaker according to claim 7, characterized in that: The sub-magnetic part includes a sub-magnet fixed on the magnetic conductive plate and a sub-pole core fixed on a side of the sub-magnet facing away from the magnetic conductive plate. Both the sub-magnet and the sub-pole core are connected to the buffer.

9. The loudspeaker according to claim 8, wherein: The sub-magnet includes two first sub-magnets arranged at intervals in a first direction, and the first sub-magnet is connected to the buffer. The first direction is perpendicular to the vibration direction.

10. A loudspeaker box, which includes a housing having a receiving space, is characterized in that: The loudspeaker box further includes a loudspeaker as described in any one of claims 1-9 assembled into the housing. The basin frame is held by the housing, and the housing includes a bottom plate. The bottom plate abuts against or is spaced from the magnetic circuit system in the vibration direction of the vibration system.

11. The speaker box according to claim 10, characterized in that: The buffer controls the absolute value of the difference between the resonant frequency of the magnetic circuit system and the resonant frequency of the loudspeaker box within a range less than 100 Hz.

12. A loudspeaker box, which comprises a housing having a receiving space and a loudspeaker assembled in the housing, the housing includes a bottom plate provided with a window therethrough, the loudspeaker includes a chassis fixed to the housing, a vibration system fixed to the chassis, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system has a magnetic conductive plate disposed in the window, and is characterized in that: The basin frame surrounds the magnetic circuit system, and the basin frame and the magnetic circuit system are arranged at intervals in a direction perpendicular to the vibration direction of the vibration system. The loudspeaker further includes a buffer arranged around the magnetic circuit system, and the buffer connects the magnetic circuit system to the basin frame to suspend the magnetic circuit system. Wherein, the basin frame is also fixed to the bottom plate, and the basin frame, the buffer and the magnetic circuit system jointly seal the window. The buffer includes a damping elastic member arranged in a continuous ring structure and surrounding the magnetic circuit system, and the damping elastic member has a preset stiffness and a preset damping for enabling the magnetic circuit system to move relative to the basin frame.

13. The speaker box according to claim 12, wherein: The buffer controls the absolute value of the difference between the resonance frequency of the magnetic circuit system and the resonance frequency of the speaker box within a range less than 100 Hz.

14. The speaker box according to claim 12, characterized in that: The buffer further includes a rigid member arranged in a continuous ring structure, wherein, the rigid member is arranged between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and, the rigid member is arranged on a side of the damping elastic member facing away from the magnetic circuit system, and the rigid member connects the damping elastic member and the basin frame.

15. The speaker box according to claim 14, characterized in that: A plurality of fixing holes are penetrated through the rigid member. The damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

16. The speaker box according to any one of claims 12-15, characterized in that: The magnetic circuit system includes a magnetic bowl, and the magnetic bowl includes the magnetic conductive plate and a side plate extending from the magnetic conductive plate towards the vibration system direction, and the side plate is connected to the buffer.

17. A loudspeaker box, which comprises a housing having a receiving space and a loudspeaker assembled into the housing, the housing includes a bottom plate provided with a window therethrough, the loudspeaker includes a chassis fixed to the housing, a vibration system fixed to the chassis, and a magnetic circuit system for driving the vibration system to vibrate, the magnetic circuit system has a magnetic conductive plate disposed in the window, and is characterized in that: The basin frame is arranged at intervals from the bottom plate. The basin frame surrounds the magnetic circuit system, and the basin frame and the magnetic circuit system are arranged at intervals in a direction perpendicular to the vibration direction of the vibration system. The loudspeaker further includes a buffer arranged around the magnetic circuit system, and the buffer connects the magnetic circuit system to the bottom plate to suspend the magnetic circuit system. Wherein, the buffer and the magnetic circuit system seal the window. The buffer includes a damping elastic member arranged in a continuous ring structure and surrounding the magnetic circuit system, and the damping elastic member has a preset stiffness and a preset damping for enabling the magnetic circuit system to move relative to the basin frame.

18. The speaker box according to claim 17, wherein: The buffer controls the absolute value of the difference between the resonance frequency of the magnetic circuit system and the resonance frequency of the speaker box within a range less than 100 Hz.

19. The speaker box according to claim 17, characterized in that: The buffer further inserts into a gap between the magnetic conductive plate and the bottom plate, and the surfaces of the bottom plate and the magnetic conductive plate facing each other are respectively connected to and sealed by the buffer.

20. The speaker box according to claim 19, characterized in that: The buffer further includes a rigid member arranged in a continuous ring structure, wherein, the rigid member is arranged between the damping elastic member and the magnetic circuit system, and the rigid member connects the damping elastic member and the magnetic circuit system; or / and, the rigid member is arranged on a side of the damping elastic member facing away from the magnetic circuit system, and the rigid member connects the damping elastic member and the bottom plate.

21. The speaker box according to claim 20, characterized in that: The rigid member is provided with a plurality of through holes, and the damping elastic member includes a buffer body fixed on the rigid member and a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

22. The speaker box according to any one of claims 19 to 21, characterized in that: The magnetic circuit system includes a magnetic bowl, the magnetic bowl includes the magnetic conductive plate and side plates extending from the magnetic conductive plate towards the vibration system, and the side plates are connected to the buffer.

23. The loudspeaker box according to claim 17, characterized in that: The magnetic circuit system includes the magnetic conductive plate, a main magnetic part fixed on the magnetic conductive plate, and a secondary magnetic part arranged around the main magnetic part and spaced from the main magnetic part to form a magnetic gap. The damping elastic member includes a ring-shaped buffer body connected to the secondary magnetic part, a connecting body extending inward from the buffer body, and a flange extending outward from the buffer body. The edge of the magnetic conductive plate is embedded in the connecting body, and the flange is fixed on one surface of the bottom plate facing the receiving space.

24. The speaker box according to claim 23, wherein: The buffer further includes a rigid member connected to the buffer body, and the flange is clamped between the bottom plate and the rigid member.

25. The loudspeaker box according to claim 24, characterized in that: The rigid member is provided with a plurality of through holes, and the damping elastic member further includes a filling body extending from the buffer body into the fixing holes and filling the fixing holes.

26. The speaker box according to claim 23, characterized in that: The edge of the magnetic conductive plate is divided into a plurality of first embedding areas arranged at intervals and second embedding areas connecting adjacent two of the first embedding areas. The first embedding areas are provided with first strengthening holes filled with the connecting body, and the second embedding areas extend towards the vibration system to form strengthening bodies. The strengthening bodies are provided with second strengthening holes filled with the buffer body.

27. The speaker box according to claim 17, wherein: The buffer is spaced from the chassis.

28. The loudspeaker box according to claim 17, characterized in that: The buffer is also connected to the chassis.

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