Anti-vibration loudspeaker and assembly method thereof

Abstract

The present invention relates to the field of loudspeakers, and provides an anti-vibration loudspeaker, comprising: a magnetic circuit system, a vibration system and a base frame, wherein the magnetic circuit system comprises a central magnet and a side magnet, the vibration system comprises a voice coil and a diaphragm, and the vibration system further comprises: a weldment fixed to the base frame, which is conductive; an elastic member connected to the corners of the voice coil at intervals, which is conductive and abuts against the weldment. The elastic member comprises: a first connecting plate, which is provided with an angled portion, and the angled portion is adapted to the outer side surface of the voice coil; a flange perpendicular to the first connecting plate; a first welding plate connected to the end of the first connecting plate away from the voice coil; an elastic support arm connected to the side of the first connecting plate close to the first welding plate; and a second connecting plate connected to the end of the elastic support arm away from the first connecting plate, which is fixed to the base frame.

Description

Technical Field

[0001] The present invention relates to the field of loudspeakers, and more particularly to an anti-vibration loudspeaker and an assembling method thereof. Background Art

[0002] A speaker is a transducer that converts electrical signals into sound signals. The performance of the speaker has a great impact on the sound quality. The speaker is the weakest component in the audio equipment, but it is also the most important component for the sound effect. There are many types of speakers, and the prices vary greatly. Audio electrical energy vibrates the diaphragm through electromagnetic, piezoelectric or electrostatic effects and resonates (resonates) with the surrounding air to produce sound.

[0003] At present, the existing loudspeakers will produce polarization phenomenon when working at high power, and the linear elastic parts arranged in the loudspeakers are easy to break during the polarization process, which reduces the performance and use effect of the loudspeakers. Summary of the invention

[0004] The present invention provides an anti-vibration loudspeaker and an assembling method thereof, which can effectively solve the above problems.

[0005] The present invention is achieved in that:

[0006] An anti-vibration loudspeaker comprises: a magnetic circuit system, a vibration system and a base frame, wherein the magnetic circuit system comprises a central magnet and a side magnet, the vibration system comprises a voice coil and a diaphragm, and the vibration system further comprises:

[0007] A weldment fixed on the base frame, which has electrical conductivity;

[0008] An elastic member connected to the corner of the voice coil at intervals, which is conductive and abuts against the welding member, and the elastic member includes:

[0009] A first connecting plate, which is provided with an angled portion, wherein the angled portion is adapted to the outer side surface of the voice coil;

[0010] A flange perpendicular to the first connecting plate;

[0011] A first welding plate connected to an end of the first connecting plate away from the voice coil;

[0012] An elastic support arm connected to a side of the first connecting plate close to the first welding plate;

[0013] The second connecting plate is connected to one end of the elastic supporting arm away from the first connecting plate and is fixed on the base frame.

[0014] As a further improvement, the weldment comprises:

[0015] A second welding plate disposed on the upper surface of the base frame, wherein a positioning hole is disposed on the second welding plate, and a positioning portion matched with the positioning hole is disposed on the base frame;

[0016] A third connecting plate is vertically connected to the second welding plate, and one end thereof away from the second welding plate abuts against the second connecting plate.

[0017] As a further improvement, the elastic support arm is in a transversely meandering shape.

[0018] As a further improvement, the distance between the connection point between the first connecting plate and the elastic support arm and the first welding plate is at least 0.35 mm.

[0019] As a further improvement, the elastic member is made of phosphor bronze.

[0020] A method for assembling an anti-vibration loudspeaker comprises the following steps:

[0021] S1, injection molding the elastic member with the connecting material and the base frame into one piece;

[0022] S2, cutting off the connecting material, installing the voice coil into the base frame, and bonding the voice coil to the elastic member;

[0023] S3, weld the voice coil lead to the first welding plate, apply glue to the middle surface of the diaphragm, apply edge glue to the base frame, bond the diaphragm to the base frame, install the magnetic circuit system into the base frame, and complete the assembly of the speaker.

[0024] The beneficial effects of the present invention are:

[0025] 1. The elastic member and the base frame are injection molded into one piece, which simplifies the assembly steps and improves the structural stability of the speaker;

[0026] 2. The elastic member includes a laterally meandering elastic support arm, which makes full use of the space between the side magnets and also improves the vibration resistance of the speaker;

[0027] 3. The combination of elastic parts and welding parts replaces the traditional extended voice coil lead as the connecting part of the conduction circuit, shortens the distance of the voice coil lead, makes the positioning accuracy of the voice coil higher, and improves the overall strength of the speaker;

[0028] 4. Control the distance between the connection point of the first connecting plate and the elastic support arm and the first welding plate, so that the influence of the vibration of the elastic support arm on the first welding plate is minimized, avoiding the occurrence of brittle fracture of the elastic support arm due to resonance in the working state, and preventing the voice coil lead welded on the first welding plate from falling off due to the vibration of the elastic support arm;

[0029] 5. The elastic member is attached to the middle of the outer side of the voice coil through the flange. Compared with the traditional method of bonding the flexible circuit board to the upper and lower surfaces of the voice coil, the present invention reduces the overall height of the speaker, and the flange is bonded to the middle of the outer side of the voice coil, so that the center of gravity of the elastic member and the voice coil are located on the same horizontal plane, which improves the vibration resistance of the speaker and avoids the phenomenon of voice coil rubbing noise caused by polarization of the vibration system or assembly error;

[0030] 6. The elastic part is made of phosphor bronze. Compared with the elastic part made of stainless steel, the present invention has a better response to low frequencies. Under the condition of satisfying the sound cavity space, the sound is rounder and fuller. In addition, the present invention has higher strength and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is an exploded view of the overall structure of the loudspeaker provided in an embodiment of the present invention.

[0033] Figure 2 It is a schematic diagram of the structure of a speaker part provided by an embodiment of the present invention.

[0034] Figure 3 It is a schematic diagram of the structure of an elastic member with a flange provided in Embodiment 1 of the present invention.

[0035] Figure 4 It is a schematic diagram of the structure of an elastic member without flange provided in the second embodiment of the present invention.

[0036] Figure 5 It is a plan view of the elastic member structure provided by an embodiment of the present invention.

[0037] Figure 6 It is a finite element analysis diagram of the elastic part structure made of stainless steel provided in an embodiment of the present invention.

[0038] Figure 7 It is a finite element analysis diagram of the elastic part structure made of phosphor bronze provided in an embodiment of the present invention.

[0039] Figure 8 It is a stress interference analysis diagram of an elastic part made of stainless steel provided in an embodiment of the present invention.

[0040] Fig. 9This is a stress interference analysis diagram of an elastic member made of phosphor bronze provided by an embodiment of the present invention. In the figure: 1. Magnetic circuit system 2. Vibration system 21. Voice coil 22. Diaphragm 23. Welding parts

[0041] 231. Second welding plate 2311. Positioning hole 232. Third connecting plate 24. Elastic member

[0042] 241. First connecting plate 2411. Corner portion 242. First welding plate

[0043] 243. Elastic support arm 244. Second connecting plate 245. Flanging 3. Base frame

[0044] 31. Positioning unit

[0045] A: The distance between the connection point between the first connecting plate and the elastic support arm and the first welding plate DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] Embodiment 1

[0049] Reference Figure 1As shown, an anti-vibration loudspeaker comprises: a magnetic circuit system 1, a vibration system 2 and a base frame 3, wherein the magnetic circuit system 1 comprises a central magnet and a side magnet, the vibration system 2 comprises a voice coil 21 and a diaphragm 22, and the vibration system 2 further comprises: a weldment 23 fixed to the base frame 3, which is conductive; and elastic members 24 spaced apart and connected to the corners of the voice coil 21, which are conductive and abut against the weldment 23. The elastic member 24 includes: a first connecting plate 241, which is provided with an angled portion 2411, and the angled portion 2411 is adapted to the outer side surface of the voice coil 21; a flange 245 perpendicular to the first connecting plate 241; a first welding plate 242 connected to the end of the first connecting plate 241 away from the voice coil 21; an elastic support arm 243 connected to the first connecting plate 241 close to the first welding plate 242; a second connecting plate 244 connected to the end of the elastic support arm 243 away from the first connecting plate 241; wherein the second connecting plate 244 is injection-molded and fixed on the base frame 3, and the surface of the second connecting plate 244 abuts against the weldment 23. The flange 245 is glued to the outer surface of the voice coil 21 by glue. Compared with the traditional method of bonding the flexible circuit board to the upper and lower surfaces of the voice coil 21, the present invention reduces the overall height of the speaker, and the flange 245 is bonded to the middle position of the outer side of the voice coil 21, so that the center of gravity of the elastic member 24 and the voice coil 21 are located on the same horizontal plane, which improves the anti-vibration performance of the speaker and avoids the phenomenon of the voice coil 21 rubbing against the ring caused by the polarization of the vibration system 2 or the assembly error. The elastic member 24 and the base frame 3 are injection molded into one piece, and one surface of the elastic member 24 is exposed to the air for contact with the welding member 23 for electrical conduction. Therefore, the combination of the welding member 23 and the elastic member 24 replaces the traditional connection method of the lead wire of the voice coil 21, shortens the distance of the external connection of the lead wire of the voice coil 21, makes the positioning accuracy of the voice coil 21 higher, and the anti-vibration effect is better, and improves the overall strength of the speaker.

[0050] Reference Figure 2 As shown, the welding piece 23 comprises: a second welding plate 231 disposed on the upper surface of the base frame 3, on which a positioning hole 2311 is disposed, and a positioning portion 31 matched with the positioning hole 2311 is disposed on the base frame 3; and a third connecting plate 232 vertically connected to the second welding plate 231, and one end thereof away from the second welding plate 231 abuts against the second connecting plate 244. The welding piece 23 is matched with the positioning portion 31 through the positioning hole 2311, and is bonded to the base frame 3 with glue, and the welding piece 23 abuts against the elastic member 24. Since both the welding piece 23 and the elastic member 24 are conductive, the second welding plate 231 is used as an external circuit connection point.

[0051] Reference Figure 3 As shown, the elastic support arm 243 is in a transversely meandering shape, which fully utilizes the space between the side magnets and improves the stability of the vibration system 2.

[0052] Reference Figure 5 As shown, the distance A between the connection point between the first connecting plate 241 and the elastic support arm 243 and the first welding plate 242 is at least 0.35 mm. When the elastic support arm 243 vibrates, the vibration amplitude of the connection point between the elastic support arm 243 and the first connecting plate 241 is the largest, and the lead of the voice coil 21 is welded on the first welding plate 242. Therefore, in the narrow space of the speaker, the connection point between the elastic support arm 243 and the first connecting plate 241 should be as far away from the first welding plate 242 as possible, so that the influence of the vibration of the elastic support arm 243 on the first welding plate 242 is minimized, avoiding the occurrence of brittle fracture of the elastic support arm 243 due to resonance in the working state, and preventing the lead of the voice coil 21 welded on the first welding plate 242 from falling off due to the vibration of the elastic support arm 243.

[0053] A method for assembling an anti-vibration loudspeaker comprises the following steps:

[0054] S1, injection molding the elastic member 24 with the connecting material and the base frame 3 into one piece;

[0055] S2, cutting off the connecting material, installing the voice coil 21 into the base frame 3, and bonding the voice coil 21 to the elastic member 24;

[0056] S3, weld the lead wire of the voice coil 21 to the first welding plate 242, apply glue on the middle surface of the diaphragm 22, apply edge glue on the base frame 3, bond the diaphragm 22 to the base frame 3, install the magnetic circuit system 1 into the base frame 3, and complete the assembly of the speaker.

[0057] The elastic member 24 is made of phosphor bronze. Figure 6 to Figure 7 As shown, finite element analysis is performed on the elastic member 24 made of stainless steel ( Figure 6 ), a finite element analysis is performed on the elastic member 24 made of phosphor bronze ( Figure 7 ), it can be seen that the lowest resonance frequency F0 of the elastic member 24 made of phosphor bronze is lower, indicating that the better the response of the present invention to low frequencies, the more mellow and full the sound is when the sound cavity space is satisfied. And the present invention ( Figure 7 ) is greater than the elastic member 24 made of stainless steel, so the risk of resonance in the present invention is small. Figures 8 to 9 As shown, phosphor bronze ( Fig. 9 ) is less than the maximum stress of stainless steel ( Figure 8 ), indicating that the present invention has higher strength and longer service life.

[0058] Embodiment 2

[0059] Reference Figure 4As shown, the difference between this embodiment and the first embodiment is that the elastic member 24 of this embodiment does not have a flange 245, and one side line of the first connecting plate 241 is attached to the outer side of the voice coil 21, that is, the first connecting plate 241 is fixed to the outer side of the voice coil 21 by glue.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-vibration speaker, comprising: A magnetic circuit system, a vibration system and a base frame, wherein the magnetic circuit system includes a central magnet and a side magnet, and the vibration system includes a voice coil and a diaphragm, and is characterized in that the vibration system also includes: A weldment fixed on the base frame, which has electrical conductivity; An elastic member connected to the corner of the voice coil at intervals, which is conductive and abuts against the welding member, and the elastic member includes: A first connecting plate, which is provided with an angled portion, wherein the angled portion is adapted to the outer side surface of the voice coil; A flange perpendicular to the first connecting plate; A first welding plate connected to an end of the first connecting plate away from the voice coil; An elastic support arm connected to a side of the first connecting plate close to the first welding plate; A second connecting plate connected to an end of the elastic supporting arm away from the first connecting plate and fixed on the base frame; The flange is bonded to the middle position of the outer side surface of the voice coil, so that the center of gravity of the elastic member and the voice coil are located on the same horizontal plane.

2. The anti-vibration loudspeaker according to claim 1, characterized in that: The weldment comprises: A second welding plate disposed on the upper surface of the base frame, wherein a positioning hole is disposed on the second welding plate, and a positioning portion matched with the positioning hole is disposed on the base frame; A third connecting plate is vertically connected to the second welding plate, and one end thereof away from the second welding plate abuts against the second connecting plate.

3. The anti-vibration loudspeaker according to claim 1, characterized in that: The elastic support arm is in a transversely meandering shape.

4. The anti-vibration loudspeaker according to claim 1, characterized in that: The distance between the connection point between the first connecting plate and the elastic supporting arm and the first welding plate is at least 0.35 mm.

5. The anti-vibration loudspeaker according to claim 1, characterized in that: The elastic member is made of phosphor bronze.

Images