Moving-coil loudspeaker device with anti-standing-wave vibrating diaphragm limiting bracket
By introducing an anti-standing wave diaphragm limiting bracket into dynamic headphones, the movement of the voice coil is restricted, the standing wave phenomenon is suppressed, the problem of voice coil impacting the housing and standing waves affecting sound quality is solved, and the lifespan of the voice coil and sound quality are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-24
AI Technical Summary
In existing dynamic headphones, when achieving deep and full bass effects, excessive movement of the voice coil can easily cause it to impact the rear shell of the unit, leading to damage, and standing wave phenomena can affect sound quality.
An anti-standing wave diaphragm limiting bracket is adopted, including an anti-standing wave diaphragm limiting bracket and a diaphragm bracket, to limit the movement amplitude of the voice coil, suppress the standing wave phenomenon, and set holes on the diaphragm limiting bracket to reduce sound wave reflection and push the standing wave frequency to ultra-high frequency.
It effectively avoids voice coil impact with the housing, reduces standing wave interference, improves sound quality and lifespan, and enhances the listening experience.
Smart Images
Figure CN224037503U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of audio equipment technology, and specifically relates to a moving coil loudspeaker device with an anti-standing wave diaphragm limiting bracket. Background Technology
[0002] Based on their transduction method, headphones are classified into various types, including dynamic headphones, balanced armature headphones, electrostatic headphones, and isoelectric headphones. Among them, dynamic headphones are currently the most widely used type of headphones in the audio market. They have high transduction efficiency, can usually be directly driven by the headphone output of audio equipment, and are simple in structure, highly reliable, and durable.
[0003] Dynamic headphones work on the principle of electromagnetic induction: when an electric current passes through the voice coil, the voice coil moves under the influence of the Lorentz force in the magnetic field, which in turn drives the diaphragm connected to it to vibrate, producing sound. For dynamic headphones with a diameter of 50mm, the larger diaphragm area can push more air, thus presenting a deeper and fuller sound effect in the low frequency range.
[0004] However, to achieve such a bass effect, the voice coil may need to have a greater range of motion, which also increases the risk of the voice coil hitting the rear housing of the driver unit. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned problems by providing a moving coil loudspeaker device with an anti-standing wave diaphragm limiting bracket. This aims to improve the situation where existing voice coils, in order to achieve a deeper and fuller bass sound, have a larger range of motion, which makes them prone to impacting the rear housing of the unit and causing damage to the voice coil and other components.
[0006] The technical solution adopted in this utility model is as follows: a moving-coil loudspeaker device with an anti-standing-wave diaphragm limiting bracket, the device comprising a diaphragm, a voice coil, and a high-leakage frame. The device also includes the following:
[0007] A limiting component is used to limit the movement amplitude of the voice coil. The diaphragm, voice coil, and limiting component are arranged in sequence, with the diaphragm located on the side closer to the ear and the limiting component located on the side farther from the ear.
[0008] The limiting component includes an anti-standing wave diaphragm limiting bracket and a diaphragm bracket. The anti-standing wave diaphragm limiting bracket is disposed in the high leakage frame and is used to suppress standing wave phenomena and constrain voice coil movement. The diaphragm bracket is disposed on the outer ring of the high leakage frame and is used to limit the diaphragm position.
[0009] The diaphragm support is bonded to the high-leakage basin frame.
[0010] Due to the above structure, the limiting component can limit the movement range of the voice coil, and the anti-standing wave diaphragm limiting bracket in the limiting component can suppress the generation of standing wave phenomenon, preventing the sound in certain frequency ranges from being abnormally amplified or attenuated, thus affecting the sound quality of the speaker.
[0011] Furthermore, in order to suppress the standing wave phenomenon, the anti-standing wave diaphragm limiting bracket is provided with multiple holes, and the holes are arranged regularly, penetrating the anti-standing wave diaphragm limiting bracket.
[0012] Furthermore, in order to limit the position of the diaphragm, the surface of the anti-standing wave diaphragm limiting bracket has a raised arc.
[0013] Furthermore, the vertical height of the apex of the raised arc relative to the bottom ranges from 1mm to 5mm.
[0014] Furthermore, in order not to affect the magnetic field strength of the speaker, the high leakage frame is configured as a ring, with the inner ring being a hollow ring; the outer ring is provided with a grid, and the grids are equidistantly arranged; the outer ring is higher than the inner ring.
[0015] Furthermore, in order to limit the movement range of the voice coil and the diaphragm, the voice coil is connected to the diaphragm. When the voice coil moves, the anti-standing wave diaphragm limiting bracket limits the diaphragm, and at the same time the diaphragm resets the voice coil.
[0016] Furthermore, in order not to affect the operation of the speaker, the diaphragm support is connected to the outer ring of the high-leakage basket, and the diaphragm support is connected to the diaphragm.
[0017] Furthermore, in order to minimize the long-distance reflection area of sound waves behind the diaphragm, the holes are evenly distributed, and the porosity of the hole surface is 10%-50%.
[0018] Furthermore, the device also includes a magnetic assembly connected to a high-leakage basin frame; the magnetic assembly is used to generate a magnetic field.
[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0020] 1. This utility model limits the movement of the voice coil by setting a limiting component on the side of the diaphragm and voice coil away from the ear, thereby preventing the voice coil from colliding with the speaker housing;
[0021] 2. This utility model reduces the long-distance reflection area of sound waves behind the diaphragm by setting an anti-standing wave diaphragm limiting bracket on a high leakage diaphragm frame, and the anti-standing wave diaphragm limiting bracket is provided with holes, thereby reducing the generation of standing wave phenomenon.
[0022] 3. This utility model divides the large-area reflective surface of the anti-standing wave diaphragm limiting bracket into multiple small-area reflective surfaces by setting holes in the anti-standing wave diaphragm limiting bracket. This blocks most of the long-distance reflection paths of sound waves, shortens the reflection distance of sound waves, and pushes the frequency of standing waves to the ultra-high frequency range that is difficult for the human ear to perceive. This effectively reduces the interference of standing waves on the audible frequency range, thereby improving the overall listening experience. Attached Figure Description
[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the limiting component structure of this utility model;
[0025] Figure 2 This is a schematic diagram of the front structure of the anti-standing wave diaphragm limiting bracket of this utility model;
[0026] Figure 3 This is a schematic diagram of the side structure of the anti-standing wave diaphragm limiting bracket of this utility model;
[0027] Figure 4 This is a schematic diagram of the high-leakage basin frame structure of this utility model;
[0028] Figure 5 This is an exploded view of the overall structure of this utility model;
[0029] Figure 6 This is a front view of the overall structure of the device of this utility model;
[0030] Figure 7 This is a rear view of the overall structure of the device of this utility model.
[0031] Reference numerals in the attached diagram: 1. Diaphragm; 2. Voice coil; 4. Anti-standing wave diaphragm limiting bracket; 5. Diaphragm bracket; 6. High leakage frame; 7. Hole; 8. Grille; 9. Magnet assembly. Detailed Implementation
[0032] The present invention will now be described in detail with reference to the accompanying drawings.
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0034] Currently, large-diameter dynamic headphone units have certain limitations in practical applications, such as:
[0035] While a larger diaphragm 1 area can move more air and produce a fuller bass effect, it also increases the risk of excessive movement of the voice coil 2. When the voice coil 2 moves beyond its design range, it may strike the rear housing of the unit, causing noise, and may also cause physical damage to the coil.
[0036] In closed or semi-closed headphone structures, standing waves form at specific frequencies as sound waves propagate. This standing wave phenomenon can cause sound to be excessively amplified or attenuated at certain frequency points, severely affecting the listening experience.
[0037] Example 1
[0038] like Figure 1 As shown, one embodiment of this utility model is a dynamic loudspeaker device with an anti-standing wave diaphragm limiting bracket. The device includes a diaphragm 1, a voice coil 2, a high leakage frame 6, and a limiting component. The limiting component is used to limit the movement amplitude of the voice coil 2. The diaphragm 1, the voice coil 2, and the limiting component are arranged in sequence. The diaphragm 1 is arranged on the side closer to the ear, and the limiting component is arranged on the side farther away from the ear.
[0039] The limiting component includes an anti-standing wave diaphragm limiting bracket 4 and a diaphragm bracket 5. The anti-standing wave diaphragm limiting bracket 4 is disposed in the high leakage frame 6 and is used to suppress standing wave phenomena and constrain the movement of the voice coil 2. The diaphragm bracket 5 is disposed on the outer ring of the high leakage frame 6 and is used to limit the position of the diaphragm 1.
[0040] In a closed or semi-closed headphone structure, the device described in this embodiment is disposed within the housing. A diaphragm 1 is provided on one side of the voice coil 2, and a limiting component is provided on the other side. The limiting component does not contact the diaphragm 1 or the voice coil 2. The limiting component is used to limit the movement of the diaphragm 1 and the voice coil 2, thereby preventing the movement of the voice coil 2 from being affected by the housing, thus improving the sound quality of the headphones.
[0041] Example 2
[0042] like Figures 2-3 As shown, in another embodiment of the present invention, the anti-standing wave diaphragm limiting bracket 4 is provided with a plurality of holes 7, and the holes 7 are arranged regularly, and the holes 7 penetrate the anti-standing wave diaphragm limiting bracket 4.
[0043] The hole 7 cuts the reflective surface of the anti-standing wave diaphragm limiting bracket 4 into multiple small reflective units, thereby blocking most of the long-distance reflection path of sound waves and pushing the frequency of standing wave formation to the ultra-high frequency range that is difficult for the human ear to perceive, thus reducing the standing wave phenomenon and improving the overall listening experience of the speaker.
[0044] Example 3
[0045] like Figure 3 As shown, in another embodiment of the present invention, the surface of the anti-standing wave diaphragm limiting bracket 4 has a raised arc.
[0046] The raised arc of the anti-standing wave diaphragm limiting bracket 4 can limit the movement of the voice coil 2. When current passes through the voice coil 2, it will displace, and the displacement amplitude is related to the current intensity. When the voice coil 2 displaces, it will impact the speaker housing, thus damaging it. Because the anti-standing wave diaphragm limiting bracket 4 limits the displacement amplitude of the voice coil 2, it will not impact the speaker housing, thereby improving the lifespan of the voice coil 2.
[0047] Example 4
[0048] like Figure 3 As shown, in another embodiment of this utility model, the vertical height of the apex of the raised arc of the anti-standing wave diaphragm limiting bracket 4 relative to the bottom ranges from 1mm to 5mm. 。
[0049] After repeated tests and comparisons, the height of the anti-standing wave diaphragm limiting bracket 4 was set to 1mm-5mm. Within this range, the anti-standing wave diaphragm limiting bracket 4 will not affect the movement of the voice coil 2 within the normal design limits, and at the same time, it can limit the movement of the voice coil 2, thereby extending the service life of the voice coil 2 and other components.
[0050] Example 5
[0051] like Figure 4 As shown, in another embodiment of the present invention, the high leakage basin frame 6 is configured as a ring, the inner ring is a hollow ring; the outer ring is provided with a grid 8, and the grids 8 are equidistantly arranged; the outer ring is higher than the inner ring.
[0052] Setting the high-leakage basket 6 into a ring shape is to ensure that the leakage rate reaches the set value for optimal sound quality. If the leakage rate is too low, the airflow in the speaker will be restricted, affecting the smooth transmission of sound.
[0053] Example 6
[0054] like Figures 5-7 As shown, in another embodiment of the present invention, the voice coil 2 is connected to the diaphragm 1. When the voice coil 2 moves, the anti-standing wave diaphragm limiting bracket 4 limits the diaphragm 1, and at the same time, the diaphragm 1 resets the voice coil 2.
[0055] The working principle of the device in this embodiment is as follows: when the voice coil 2 moves too much, the anti-standing wave diaphragm limiting bracket 4 can limit the voice coil 2. Since the voice coil 2 is connected to the diaphragm 1, the diaphragm 1 will also move when the voice coil 2 moves. Thus, the anti-standing wave diaphragm limiting bracket 4 can simultaneously limit the movement of the voice coil 2 and the diaphragm 1 and reset the voice coil 2 and the diaphragm 1 to avoid damage to the speaker housing.
[0056] Example 7
[0057] like Figures 5-7 As shown, in another embodiment of this utility model, the diaphragm support 5 is connected to the outer ring of the high-leakage basin frame 6, and the diaphragm support 5 is connected to the diaphragm 1. The diaphragm support 5 is connected to the outer ring of the diaphragm 1.
[0058] One side of the diaphragm support 5 is connected to the diaphragm 1, and the other side is connected to the high-leakage frame 6. The diaphragm 1 and the high-leakage frame 6 confine the voice coil 2 within the connection space between them, thereby limiting the range of motion of the voice coil 2 and preventing the voice coil 2 from impacting the speaker housing.
[0059] Example 8
[0060] like Figure 5 As shown, in another embodiment of the present invention, the device further includes a magnetic assembly 9, which is connected to a high-leakage basin frame; the magnetic assembly 9 is used to generate a magnetic field.
[0061] The magnetic assembly 9 includes an upper magnetic guide assembly, a magnetic circuit assembly, and a lower magnetic guide component. The magnetic assembly 9 is set in the inner ring of the high leakage basin frame 6 and is covered by the diaphragm 1. The diaphragm 1 is basin-shaped, which is conducive to the vibration of the diaphragm 1.
[0062] The anti-standing wave diaphragm limiting bracket 4 is bonded to the inner magnetic conductor of the upper magnetic conductor assembly, and the diaphragm bracket 5 is bonded to the high leakage basin frame 6.
[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A moving-coil loudspeaker device with anti-standing-wave diaphragm retaining bracket, said device comprising a diaphragm, a voice coil and a high-leakage spider, characterized in that, The device also comprises the following: A limiting component for limiting the movement amplitude of the voice coil, the diaphragm, the voice coil and the limiting component being arranged in sequence, the diaphragm being arranged on the side close to the human ear, and the limiting component being arranged on the side away from the human ear; The limiting component comprises an anti-standing wave diaphragm limiting support and a diaphragm support, the anti-standing wave diaphragm limiting support being arranged in the high-leakage basket, and the anti-standing wave diaphragm limiting support being used for suppressing the standing wave phenomenon and restricting the movement of the voice coil; the diaphragm support being arranged on the outer circle of the high-leakage basket, and the diaphragm support being used for limiting the position of the diaphragm. The diaphragm support is bonded to the high-leakage basket.
2. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 1, characterized in that, A plurality of holes are arranged on the anti-standing wave diaphragm limiting support, and the holes are regularly arranged and penetrate the anti-standing wave diaphragm limiting support.
3. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 2, characterized in that, The anti-standing wave diaphragm limiting support has a raised arc on the surface.
4. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 3, characterized in that, The vertical height of the vertex of the raised arc relative to the bottom is in the range of 1mm-5mm.
5. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 1, characterized in that, The high-leakage basket is arranged in a circular ring shape, the inner circular ring is a hollow circular ring, the outer circular ring is provided with a grid, and the grid is arranged at equal intervals, and the outer circular ring is higher than the inner circular ring.
6. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 1, characterized in that, The voice coil is connected to the diaphragm, when the voice coil moves, the anti-standing wave diaphragm limiting support limits the diaphragm, and the diaphragm resets the voice coil.
7. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 1, characterized in that, The diaphragm support is connected to the outer circular ring of the high-leakage basket, and the diaphragm support is connected to the diaphragm.
8. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 2, characterized in that, The holes are uniformly distributed, and the surface opening rate is 10%-50%.
9. A moving-coil loudspeaker device with anti-standing-wave diaphragm limiting support according to claim 1, characterized in that, The device also comprises a magnetic group, the magnetic group being connected to the high-leakage basket, and the magnetic group being used for generating a magnetic field.