CN211531315U - Loudspeaker - Google Patents

Abstract

The utility model provides a loudspeaker, which comprises a basin frame with an accommodating space, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are accommodated in the accommodating space; the magnetic circuit system comprises a lower clamping plate, main magnetic steel and auxiliary magnetic steel which are fixed on the lower clamping plate, and an upper clamping plate which is fixed on the auxiliary magnetic steel, wherein the auxiliary magnetic steel and the main magnetic steel are arranged at intervals to form a magnetic gap; the upper clamping plate comprises a fixing part fixedly connected with the auxiliary magnetic steel, a connecting part connected with the fixing part, an extension arm extending from the connecting part towards the direction close to the main magnetic steel, and a magnetic conduction reinforcing arm bending and extending from the extension arm towards the direction close to the lower clamping plate. The utility model discloses the arm is strengthened in the magnetic conduction that sets up, can increase the magnetic conductivity between punch holder and the lower plate, improves whole magnetic circuit's performance, and then improves the performance of speaker.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to a loudspeaker device part technical field especially relates to a be used for speaker.

[ background of the invention ]

Along with the rapid development of science and technology, audio equipment also constantly develops fast, and people require more and more high to audio equipment's functionality, and to the speaker, mainly including the vibration system of vibration sound production, the magnetic circuit of drive vibration system vibration and the basin frame that is used for accomodating vibration system and magnetic circuit. Magnetic circuit is including the magnet steel that provides the magnetic field and the splint structure that is used for the centre gripping magnet steel, and the splint structure divide into punch holder and lower plate, and punch holder and lower plate adopt magnetic material to make, and wherein, the punch holder setting is in the basin frame, and current punch holder generally is straight platelike, and is independent each other with the lower plate to keep a section distance. The structure that the upper clamping plate and the lower clamping plate are far away from each other and are not conducted obviously cannot increase the magnetic conduction effect, so that the performance of related loudspeaker products is not high.

Therefore, there is a need for a new speaker with high product performance.

[ Utility model ] content

An object of the utility model is to provide a speaker that performance is high.

The technical scheme of the utility model as follows: a loudspeaker comprises a frame with an accommodating space, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are accommodated in the accommodating space; the vibration system comprises a vibrating diaphragm and a voice coil assembly for driving the vibrating diaphragm to vibrate and produce sound, and the vibrating diaphragm is positioned above the basin stand; the magnetic circuit system comprises a lower clamping plate, main magnetic steel and auxiliary magnetic steel which are fixed on the lower clamping plate, and an upper clamping plate which is fixed on the auxiliary magnetic steel, wherein the auxiliary magnetic steel and the main magnetic steel are arranged at intervals to form a magnetic gap, and the voice coil assembly is inserted into the magnetic gap; the upper clamping plate comprises a fixing part fixedly connected with the auxiliary magnetic steel, a connecting part connected with the fixing part, an extension arm extending from the connecting part towards the direction close to the main magnetic steel, and a magnetic conduction enhancement arm bending and extending from the extension arm towards the direction close to the lower clamping plate, the magnetic conduction enhancement arm is spaced from the voice coil assembly, and the projection parts of the magnetic conduction enhancement arm and the voice coil assembly in the direction perpendicular to the vibration direction are overlapped.

Further, preferably, the magnetically permeable reinforcing arm is in contact with the lower plate.

Further, preferably, the vibration system further comprises a flexible circuit board, wherein the flexible circuit board comprises a first fixing part fixed on the frame, a second fixing part connected with one end of the voice coil assembly far away from the vibrating diaphragm, and an elastic part connecting the first fixing part and the second fixing part; the flexible circuit board is located extension arm below, just magnetic conduction reinforcing arm is located the voice coil loudspeaker voice coil subassembly with between the flexible circuit board.

Further, preferably, the magnetic conduction reinforcing arm, the voice coil assembly and the flexible circuit board have no overlapping projection in the vibration direction.

Further, as preferred, connecting portion are including inlaying and locating the first kink of basin frame, first kink is along being close to the extension of lower plate direction.

Further, as preferred, the magnetic conduction reinforcing arm faces to both sides of the voice coil assembly and is provided with a notch groove for the voice coil assembly to avoid.

Further, preferably, the notch groove extends from one end of the magnetic conduction enhancement arm close to the extension arm to the other end of the magnetic conduction enhancement arm close to the lower clamping plate.

Further, preferably, an included angle between the extension arm and the magnetic conduction enhancement arm is 90 °.

Further, preferably, the main magnetic steel is rectangular and includes a first side end located in the major axis direction and opposite to the secondary magnetic steel and a second side end located in the minor axis direction; the extension arm extends toward the second lateral end.

Compared with the prior art, the beneficial effects of the utility model reside in that: through the magnetic conduction reinforcing arm that sets up the extension to the lower plate direction at the punch holder, can increase the magnetic conductivity between punch holder and the lower plate, improve whole magnetic circuit's performance, and then improve the performance of speaker.

[ description of the drawings ]

Fig. 1 is a schematic diagram of a speaker according to an embodiment of the present invention.

Fig. 2 is a schematic view of an upper plate according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of the structure in the direction of a-a in fig. 1.

Fig. 4 is an enlarged view at C in fig. 3.

FIG. 5 is a schematic sectional view of the structure of FIG. 1 taken along the direction B-B

Fig. 6 is a schematic diagram of an exploded structure of a speaker according to an embodiment of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 6, a speaker includes a frame 2 having a receiving space, and a vibration system 3 and a magnetic circuit system received in the receiving space; the vibration system 3 comprises a diaphragm 32 and a voice coil assembly 31 for driving the diaphragm 32 to vibrate and sound, the diaphragm 32 is located above the basin frame 2, and the edge part of the diaphragm is fixedly connected with the basin frame 2.

The magnetic circuit system comprises a lower clamping plate 12, a main magnetic steel 13 and an auxiliary magnetic steel 14 which are fixed on the lower clamping plate 12, an upper clamping plate 11 which is fixed on the auxiliary magnetic steel 14, and a magnetic conductive sheet 15 which is fixed on the main magnetic steel 13. The auxiliary magnetic steel 14 and the main magnetic steel 13 are arranged at intervals to form a magnetic gap 16, the voice coil assembly 31 is inserted into the magnetic gap, and the lower clamping plate 12 and the upper clamping plate 11 are both made of magnetic conductive materials. In this embodiment, the main magnetic steel 13 is rectangular, and includes a first side end 131 in the long axis direction and a second side end 132 in the short axis direction, and the secondary magnetic steel 14 is located in the long axis direction of the main magnetic steel 13 and is parallel to and opposite to the first side end 131 to form the magnetic gap 16.

In this embodiment, the upper plate 11 includes a fixing portion 111, a connecting portion 112 connecting the fixing portion 111, an extension arm 113 extending from the connecting portion 112 toward the main magnet 13, and a magnetic conduction reinforcing arm 114 extending from the extension arm 113 toward the lower plate 12. The fixing portion 111 is fixed above the auxiliary magnetic steel 14 and is used for magnetic conduction. The connecting portion 112 connects the fixing portions 111 respectively located above the sub magnetic steels 14 to form a ring structure. The extension arm 113 extends from the connection portion 112 toward the main magnet 13. The vibration system further comprises a flexible circuit board 33, wherein the flexible circuit board 33 comprises a first fixing part 332 fixed on the frame, a second fixing part 330 connected with one end of the voice coil assembly far away from the diaphragm, and an elastic part 331 connecting the first fixing part 332 and the second fixing part 330; the flexible circuit board 33 is located below the extension arm 113, and the magnetic conduction enhancement arm 114 is located between the voice coil assembly 31 and the flexible circuit board 33. The magnetic conduction enhancing arm 114, the voice coil assembly 31 and the flexible circuit board 33 have no overlapping projection in the vibration direction.

Specifically, the extension arm 113 extends toward the second side end 132 of the main magnet steel 13 to give way to the vibration of the flexible circuit board located below the upper clamping plate. The magnetic enhancement arm 114 extends from the extension arm 113 toward the direction close to the lower plate 12, as shown in fig. 3 and 4, the magnetic enhancement arm 114 is spaced apart from the voice coil assembly 31 by a certain distance, and the projections of the two in the direction perpendicular to the vibration direction are overlapped, so that the number of magnetic induction lines passing through the voice coil assembly is increased, and the magnetic induction intensity is enhanced. Further, the magnetic conduction enhancing arm 114 also extends to the lower clamping plate 12 to contact with the lower clamping plate 12, so that the magnetic conduction of the upper clamping plate 11 and the lower clamping plate 12 is communicated, and the magnetism of the main magnet steel 12 in the minor axis direction is increased.

The utility model discloses an among the basic scheme, magnetic circuit is used for the speaker to as the magnetic field of speaker provides the part, specifically by main magnet steel 13 and vice magnet steel 14 provide magnetic field. In order to stably arrange the main magnetic steel 13 and the sub magnetic steel 14, the upper clamp 11 and the lower clamp 12 are arranged to clamp the magnetic steels, and specifically, the upper clamp 11 is used to clamp and fix the magnetic steels through the fixing portion 111 and the lower clamp 12. Since the upper and lower clamping plates 11 and 12 are required to be configured to have a magnetic conductive function, the upper and lower clamping plates 11 and 12 are made of a magnetic conductive material. In this embodiment, the secondary magnetic steel is not provided in the short axis direction of the primary magnetic steel 13, and the magnetic property in the short axis direction is weak. Specifically, the magnetic permeability is increased by the magnetic permeability increasing arm 114 provided in the short axis direction of the main magnet steel 13, thereby increasing the magnetic permeability in the short axis direction of the main magnet steel 13. Preferably, the magnetically permeable reinforcing arm 114 is positioned in close proximity to contact the lower jaw 12. The magnetic conductivity of the whole upper clamping plate 11 and the whole lower clamping plate 12 is increased, so that the performance of the whole magnetic circuit system is enhanced, and the performance of the magnetic circuit system applied to the loudspeaker can be improved.

Preferably, the magnetic conduction enhancing arm 114 is provided with a notch 1140 for avoiding the voice coil assembly at both side ends facing the voice coil assembly 31. The notch 1140 extends from one end of the magnetic enhancement arm 114 close to the extension arm 113 to the other end of the magnetic enhancement arm 114 close to the lower clamp 12.

Preferably, the included angle between the extension arm 113 and the magnetic conduction enhancement arm 114 is 90 °. Preferably, as shown in fig. 4, the connecting portion 112 includes a first bent portion 1121 embedded in the frame 2, and the first bent portion 1121 extends in a direction approaching the lower splint 12.

Preferably, as shown in fig. 5, the fixing portion 111 includes a second bending portion 1111 embedded in the frame, and the second bending portion 1111 extends along a direction close to the diaphragm 32.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims (10)

1. A loudspeaker comprises a frame with an accommodating space, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are accommodated in the accommodating space; the vibration system comprises a vibrating diaphragm and a voice coil assembly for driving the vibrating diaphragm to vibrate and produce sound, and the vibrating diaphragm is positioned above the basin stand; the magnetic circuit system comprises a lower clamping plate, main magnetic steel and auxiliary magnetic steel which are fixed on the lower clamping plate, and an upper clamping plate which is fixed on the auxiliary magnetic steel, wherein the auxiliary magnetic steel and the main magnetic steel are arranged at intervals to form a magnetic gap, and the voice coil assembly is inserted into the magnetic gap; the method is characterized in that: the upper clamping plate comprises a fixing part fixedly connected with the auxiliary magnetic steel, a connecting part connected with the fixing part, an extension arm extending from the connecting part towards the direction close to the main magnetic steel, and a magnetic conduction enhancement arm bending and extending from the extension arm towards the direction close to the lower clamping plate, the magnetic conduction enhancement arm is spaced from the voice coil assembly, and the projection parts of the magnetic conduction enhancement arm and the voice coil assembly in the direction perpendicular to the vibration direction are overlapped.

2. The loudspeaker of claim 1, wherein: the magnetic conduction reinforcing arm is in contact with the lower clamping plate.

3. The loudspeaker of claim 1, wherein: the vibration system further comprises a flexible circuit board, wherein the flexible circuit board comprises a first fixing part fixed on the basin frame, a second fixing part connected with one end, far away from the vibrating diaphragm, of the voice coil assembly, and an elastic part connecting the first fixing part and the second fixing part; the flexible circuit board is located extension arm below, just magnetic conduction reinforcing arm is located the voice coil loudspeaker voice coil subassembly with between the flexible circuit board.

4. A loudspeaker according to claim 3, wherein: the magnetic conduction reinforcing arm, the voice coil assembly and the flexible circuit board are not overlapped in projection in the vibration direction.

5. The loudspeaker of claim 1, wherein: connecting portion locate including inlaying the first kink of basin frame, first kink is along being close to the lower plate direction extends.

6. The loudspeaker of claim 1, wherein: the fixed part is including inlaying and locating the second kink of basin frame, the second kink is along being close to the extension of vibrating diaphragm direction.

7. The loudspeaker of claim 1, wherein: the magnetic conduction reinforcing arm faces to two side ends of the voice coil assembly and is provided with a notch groove for avoiding the voice coil assembly.

8. The loudspeaker of claim 7, wherein: the notch groove extends from one end, close to the extension arm, of the magnetic conduction enhancement arm to the other end, close to the lower clamping plate, of the magnetic conduction enhancement arm.

9. The loudspeaker of claim 1, wherein: the included angle between the extension arm and the magnetic conduction enhancement arm is 90 degrees.

10. The loudspeaker of claim 1, wherein: the main magnetic steel is rectangular and comprises a first side end which is positioned in the long axis direction and is opposite to the auxiliary magnetic steel and a second side end which is positioned in the short axis direction; the extension arm extends toward the second lateral end.

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