Sound Pronunciation Device

Abstract

The present invention provides a sound producing device. [Solution] The sound-producing device includes a metal frame, a vibration system fixed to the metal frame and a magnetic circuit system for driving the vibration of the vibration system, the magnetic circuit system including a lower clamp plate fixed to the metal frame, a main magnetic steel fixed to the lower clamp plate, and a sub-magnetic steel surrounding the main magnetic steel, the sound-producing device further includes a positioning pillar fixed to the lower clamp plate, the positioning pillar being formed on the periphery of the lower clamp plate by an injection method, and one end of the positioning pillar away from the lower clamp plate abuts against the metal frame to form a position relative to the metal frame. The sound-producing device of the present invention can position the lower clamp plate with the metal frame by the positioning pillar, and can avoid the problem that the lower clamp plate cannot be positioned with the metal frame.

Description

[Technical field]

[0001] The present invention relates to the field of audio-electronics technology, and in particular to a sound generating device. [Background technology]

[0002] The sound-producing device is a transducer element that converts an electrical signal into an acoustic signal, and mainly includes a frame, a vibration system fixed to the frame, and a magnetic circuit system that drives the vibration of the vibration system.

[0003] A conventional magnetic circuit system includes a lower clamp plate fixed to a frame, a main magnetic steel fixed to the side of the lower clamp plate close to the vibration system, and a sub-magnetic steel surrounding the main magnetic steel and spaced apart from the main magnetic steel to form a magnetic gap, where the lower clamp plate is positioned by positioning posts provided on a plastic frame.

[0004] In order to make the frame thinner and reduce the overall volume or increase the space of the sound chamber, the frame is manufactured as a metal frame by adopting a metal material. When the frame is made of a metal material, the lower clamp plate cannot be positioned relative to the metal frame because the plastic positioning pillar cannot be set. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem that the present invention aims to solve is how to provide a sound producing device that solves the problem in conventional sound producing devices that the metal frame cannot set the plastic positioning pillars, so that the lower clamp plate cannot be positioned with it. [Means for solving the problem]

[0006] The present invention provides the following: The present invention provides a sound producing device, the sound producing device including a metal frame, a vibration system and a magnetic circuit system for driving the vibration of the vibration system, each of which is fixed to the metal frame, the magnetic circuit system including a lower clamp plate, a main magnetic steel fixed to a side of the lower clamp plate close to the vibration system, and a sub-magnetic steel surrounding the main magnetic steel and spaced apart from the main magnetic steel to form a magnetic gap, the sound producing device further including a positioning pillar fixed to the lower clamp plate, the positioning pillar being formed on the periphery of the lower clamp plate by an injection molding method, and one end of the positioning pillar remote from the lower clamp plate abutting against the metal frame to form a position relative to the metal frame.

[0007] Furthermore, the magnetic circuit system further includes an upper clamp plate attached to the secondary magnetic steel, the upper clamp plate being fixedly connected to the metal frame, and the positioning pillar abutting against the upper clamp plate to indirectly form a position relative to the metal frame.

[0008] Furthermore, a positioning notch is provided in the upper clamp plate, and the positioning pillar extends up to the positioning notch, thereby abutting against the upper clamp plate and positioning it.

[0009] Additionally, the metal frame and the upper clamp plate are of one-piece construction.

[0010] Furthermore, the metal frame has a rectangular ring shape and includes two long side portions facing each other and spaced apart, and two short side portions facing each other and spaced apart, the upper clamp plate includes two first upper clamp plates formed by extending inward from central regions of the two short side portions, the two first upper clamp plates are stacked on top of the two secondary magnetic steels located on the short sides of the main magnetic steel, there are four positioning notches, each recessed inward from the side surfaces of the two first upper clamp plates adjacent to the two long side portions, and there are four positioning pillars, each extending to one of the four positioning notches.

[0011] Furthermore, the upper clamp plate further includes two second upper clamp plates formed by extending inwardly from the central regions of the two long side portions, respectively, and the two second upper clamp plates are arranged overlapping the two sub-magnetic steels located on the longitudinal sides of the main magnetic steel.

[0012] Furthermore, the vibration system includes a diaphragm fixed to the metal frame, a voice coil inserted and suspended in the magnetic gap to drive the vibration of the diaphragm, a skeleton fixed to the diaphragm and connected to the voice coil, and an elastic member fixed to the metal frame and facing and spaced apart from the diaphragm, the elastic member being connected to the skeleton.

[0013] Furthermore, the skeleton includes a skeleton main body fixed to the vibration membrane and having a ring shape, and a skeleton fixing portion formed by bending and extending from the outer peripheral edge of the skeleton main body toward the magnetic circuit system, the elastic member is connected to the side of the skeleton fixing portion away from the skeleton main body, and the voice coil is connected to the side of the skeleton main body close to the magnetic circuit system.

[0014] Furthermore, the vibrating membrane includes a suspension, a vibrating part that is folded and extends from the inner peripheral edge of the suspension and is fixed to the outer peripheral edge of the skeletal body, a fixed part that is folded and extends from the outer peripheral edge of the suspension and is fixed to the metal frame, and a dome that is fixed to the inner peripheral edge of the skeletal body.

[0015] Furthermore, there are four elastic members, each fixed to one of the four corner positions of the metal frame; there are four skeletal fixing parts, each connected to one of the four elastic members; and each of the elastic members includes a first fixed arm fixed to the metal frame, a second fixed arm fixed to the skeletal fixing part and spaced apart from the first fixed arm, and an elastic arm bent to extend from the first fixed arm to the second fixed arm and connected to the second fixed arm. Effect of the Invention

[0016] Compared with the prior art, the sound-producing device of the present invention forms a positioning post on the periphery of the lower clamping plate by injection molding, and abuts one end of the positioning post away from the lower clamping plate against the metal frame, thereby forming a positioning position relative to the metal frame, and avoiding the problem that the lower clamping plate cannot be positioned relative to the metal frame.

[0017] In order to more clearly describe the technical solutions in the embodiments of the present invention or the existing technology, the following will briefly introduce drawings that need to be used in the description of the embodiments or the existing technology. However, the drawings in the following description are only some embodiments of the present invention, and it is obvious to those skilled in the art in the technical field to which the present invention belongs that they can obtain other drawings based on these drawings without requiring creative labor. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic exploded view of a sound generating device according to an embodiment of the present invention; [Diagram 2] 1 is a schematic diagram showing the overall structure of a sound generating device according to an embodiment of the present invention; [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] 4 is a schematic diagram of a connection structure between a metal frame and a magnetic circuit system in a sound generating device according to an embodiment of the present invention. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in more detail with reference to the drawings and examples below. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] 1 to 4, the present invention provides a sound producing device 100, which includes a metal frame 1, a vibration system 2 fixed to the metal frame 1, and a magnetic circuit system 3 for driving the vibration of the vibration system 2. Here, the metal frame 1, the vibration system 2, and the magnetic circuit system 3 collectively surround a sound producing chamber 10.

[0021] Specifically, the magnetic circuit system 3 includes a lower clamp plate 31, a main magnetic steel 32 fixed to the side of the lower clamp plate 31 adjacent to the vibration system 2, and a sub-magnetic steel 33 surrounding the main magnetic steel and spaced apart from the main magnetic steel 32 to form a magnetic gap 20.

[0022] Specifically, the sound production device 100 further includes a positioning pillar 311 fixed to the lower clamp plate 31, and the positioning pillar 311 is formed on the periphery of the lower clamp plate 31 by an injection method, and one end of the positioning pillar 311 away from the lower clamp plate 31 abuts against the metal frame 1, thereby forming a position relative to the metal frame 1.

[0023] Furthermore, the magnetic circuit system 3 further includes an upper clamp plate 34 attached to the secondary magnetic steel 33, the upper clamp plate 34 is fixedly connected to the metal frame 1, and the positioning pillar 311 abuts against the upper clamp plate 34, thereby indirectly forming a position relative to the metal frame 1.

[0024] In this embodiment, the upper clamp plate 34 is provided with a positioning notch 341, and the positioning pillar 311 extends up to the positioning notch 341 to abut against the upper clamp plate 34 for positioning. In this way, the positioning pillar 311 can be more stably connected to the upper clamp plate, thereby realizing positioning and fixing.

[0025] In this embodiment, the metal frame 1 and the upper clamp plate 34 are of an integrally molded structure, which can improve the strength of the connection structure between them.

[0026] Furthermore, the magnetic circuit system 3 further includes a pole plate 35 provided overlapping the side of the main magnetic steel 32 adjacent to the vibration system 2 .

[0027] Specifically, the vibration system 2 includes a vibration membrane 21 fixed to the metal frame 1, a voice coil 22 inserted and suspended within the magnetic gap 20 to drive the vibration of the vibration membrane 21, a skeleton 23 fixed to the vibration membrane 21 and electrically connected to the voice coil 22, and an elastic member 24 fixed to the metal frame 1 and facing the vibration membrane 21 at a distance, the elastic member 24 being electrically connected to the skeleton 23.

[0028] In this embodiment, the metal frame 1 has a rectangular ring shape, and its main body includes two long side portions 11 facing each other and spaced apart, and two short side portions 12 facing each other and spaced apart, the upper clamp plate 34 includes two first upper clamp plates 342 formed by extending inward from the central regions of the two short side portions 12, the two first upper clamp plates 342 are overlapped on two sub-magnetic steel pieces 33 located on the short sides of the main magnetic steel piece 32, there are four positioning notches 341, each of which is formed by being recessed inward from the side surfaces adjacent to the two long side portions 11 of the two first upper clamp plates 342, and there are four positioning pillars 311, each extending to the four positioning notches 341 one by one. The positioning engagement between the four positioning posts 311 and the four positioning notches 341 can make the positioning between the lower clamp plate 31 and the upper clamp plate 34 more stable.

[0029] In addition, the upper clamp plate 34 further includes two second upper clamp plates 343 formed by extending inwardly from the central regions of the two long side portions 11, respectively, and the two second upper clamp plates 343 are arranged overlapping two sub-magnetic steels 33 located on the longitudinal edges of the main magnetic steel 32.

[0030] In this embodiment, there are four sub-magnetic steels 33, and the two sub-magnetic steels 33 located on the short sides of the main magnetic steel 32 each have the same structure as the two first upper clamp plates 342, and the two sub-magnetic steels 33 located on the long sides of the main magnetic steel 32 each have the same structure as the two second upper clamp plates 343.

[0031] In this embodiment, the lower clamping plate 31 has a rectangular structure, and the four positioning posts 311 are provided at the four corner positions of the lower clamping plate 31, respectively.

[0032] In this embodiment, the skeleton 23 includes a skeleton main body 231 fixed to the vibrating membrane 21 and having a ring shape, and a skeleton fixing portion 232 formed by bending and extending from the outer peripheral edge of the skeleton main body 231 in the direction of the magnetic circuit system 3, and the elastic member 24 is connected to the side of the skeleton fixing portion 232 away from the skeleton main body 231, and the voice coil 22 is connected to the side of the skeleton main body 231 close to the magnetic circuit system 3.

[0033] In this embodiment, the vibrating membrane 21 includes a suspension 211, a vibrating part 212 that is bent and extends from the inner peripheral edge of the suspension 211 and is fixed to the outer peripheral edge of the skeletal body 231, a fixed part 213 that is bent and extends from the outer peripheral edge of the suspension 211 and is fixed to the metal frame 1, and a dome 214 that is fixed to the inner peripheral edge of the skeletal body 231.

[0034] Here, the vibration section 212 is fixed to the side of the skeleton body 231 that is distant from the magnetic circuit system 3 , and the dome 214 is fixed to the side of the skeleton body 231 that is close to the magnetic circuit system 3 .

[0035] In this embodiment, there are four elastic members 24, which are fixed to the four corner positions of the metal frame 1, and there are four skeletal fixing parts 232, which are connected to the four elastic members 24, respectively. Each elastic member 24 includes a first fixed arm 241 fixed to the metal frame 1, a second fixed arm 242 fixed to the skeletal fixing part 232 and spaced apart from the first fixed arm 241, and an elastic arm 243 bent and extending from the first fixed arm 241 toward the second fixed arm 242 and connected to the second fixed arm 242.

[0036] The first fixed arm 241 is indirectly fixed to the metal frame 1 by the lower clamp plate 31, which corresponds to the first fixed arm 241 being suspended and fixed to the four corner positions of the lower clamp plate 31.

[0037] In this embodiment, each second fixed arm 242 of two adjacent elastic members 24 includes a first connection portion 2421 connected to the skeleton fixing portion 232, a second connection portion 2422 connected to the side of the skeleton main body 231 close to the magnetic circuit system 3, and a third connection portion 2423 extending from the first connection portion 2421 toward the second connection portion 2422 and connected to the second connection portion 2422.

[0038] Compared with the prior art, the sound producing device 100 of the present invention forms a positioning post 311 by injection molding on the periphery of the lower clamp plate 31, and abuts one end of the positioning post 311 away from the lower clamp plate 31 against the metal frame 1, thereby forming positioning relative to the metal frame 1, and avoiding the problem that the lower clamp plate 31 cannot be positioned relative to the metal frame 1.

[0039] The above description is only a preferred embodiment of the present invention, and does not limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention. [Explanation of symbols]

[0040] 100 pronunciation devices 1 Metal Frame 11 Long side 12 Short side 2. Vibration System 21 Vibrating membrane 211 Suspension 212 Vibration section 213 Fixed part 214 Dome 22 Voice coil 23 Skeleton 231 Skeleton Body 232 Skeletal Fixation Part 24 Elastic member 241 First fixed arm 242 Second fixed arm 2421 First connection part 2422 Second connection part 2423 Third Connection 243 Elastic Arm 3. Magnetic Circuit System 31 Lower clamp plate 311 Positioning Pillar 32 Main magnetic steel 33 Sub-magnetic steel 34 Upper clamp plate 341 Positioning notch 342 First upper clamp plate 343 No. 2 Upper Clamp Plate 35 Pole Plate 10. Sound Chamber 20 Magnetic Gap

Claims

1. A sound-producing device including a metal frame, a vibration system and a magnetic circuit system for driving vibration of the vibration system, both of which are fixed to the metal frame, the magnetic circuit system including a lower clamp plate, a main magnetic steel fixed to a side of the lower clamp plate adjacent to the vibration system, and a sub-magnetic steel surrounding the main magnetic steel and spaced apart from the main magnetic steel to form a magnetic gap, the sound-producing device further includes a positioning post fixed to the lower clamping plate, the positioning post being formed on the periphery of the lower clamping plate by an injection molding method, and one end of the positioning post away from the lower clamping plate abuts against a metal frame to form a position relative to the metal frame; The magnetic circuit system further includes an upper clamp plate that is attached to the secondary magnetic steel, the upper clamp plate is fixedly connected to the metal frame, and the positioning pillar abuts against the upper clamp plate to indirectly form a position relative to the metal frame; The upper clamp plate is provided with a positioning notch, and the positioning pillar extends to the positioning notch to abut against the upper clamp plate for positioning; the metal frame and the upper clamp plate are of one-piece construction; the metal frame has a rectangular ring shape and includes two long side portions opposed to each other and spaced apart, and two short side portions opposed to each other and spaced apart, the upper clamp plate includes two first upper clamp plates formed by extending inward from central regions of the two short side portions, the two first upper clamp plates being overlapped on two sub-magnetic steel pieces located on the short sides of the main magnetic steel piece, the positioning notches are four in number and are formed by recessing inward from side surfaces of each of the two first upper clamp plates adjacent to the two long side portions, the positioning pillars are four in number and extend to the four positioning notches one by one, A sound-producing device, characterized in that the four positioning posts are provided on the inside of the four corners of the lower clamp plate, respectively.

2. The sound generating device according to claim 1, characterized in that the upper clamp plate further includes two second upper clamp plates formed by extending inward from central regions of the two long side portions, respectively, and the two second upper clamp plates are provided overlapping the two sub-magnetic steels located on the longitudinal sides of the main magnetic steel.

3. The sound production device described in claim 2, characterized in that the vibration system includes a diaphragm fixed to the metal frame, a voice coil inserted and suspended in the magnetic gap to drive vibration of the diaphragm, a skeleton fixed to the diaphragm and connected to the voice coil, and an elastic member fixed to the metal frame and facing and spaced from the diaphragm, the elastic member being connected to the skeleton.

4. 4. The sound generating device according to claim 3, wherein the skeleton includes a skeleton main body fixed to the diaphragm and having an annular shape, and a skeleton fixing portion formed by bending and extending from an outer peripheral edge of the skeleton main body toward the magnetic circuit system, the elastic member is connected to a side of the skeleton fixing portion away from the skeleton main body, and the voice coil is connected to a side of the skeleton main body close to the magnetic circuit system.

5. The sound-producing device according to claim 4, characterized in that the vibrating membrane includes a suspension, a vibrating part that is folded and extends from the inner peripheral edge of the suspension and is fixed to the outer peripheral edge of the skeletal body, a fixed part that is folded and extends from the outer peripheral edge of the suspension and is fixed to the metal frame, and a dome that is fixed to the inner peripheral edge of the skeletal body.

6. The sound producing device according to claim 4, characterized in that there are four elastic members, each fixed to one of the four corner positions of the metal frame, there are four skeletal fixing parts, each connected to one of the four elastic members, and each of the elastic members includes a first fixed arm fixed to the metal frame, a second fixed arm fixed to the skeletal fixing part and spaced apart from the first fixed arm, and an elastic arm bent to extend from the first fixed arm to the second fixed arm and connected to the second fixed arm.

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