Coaxial double-magnetic double-ring loudspeaker and earphone

Abstract

The invention provides a coaxial double-magnet double-ring loudspeaker and an earphone, in the loudspeaker, a first annular magnet is located in an inner ring of a second annular magnet, and the first annular magnet and the second annular magnet are coaxially arranged; a first voice coil groove is formed between the outer ring of the first annular magnet and the inner ring of the second annular magnet, and a second voice coil groove is formed between the outer ring of the second annular magnet and the U-shaped cup; the vibrating diaphragm sequentially forms a high-frequency area, an intermediate-frequency area and a low-frequency area from the axis to the outside in the radial direction, the joint of the high-frequency area and the intermediate-frequency area is connected with the first end of the first voice coil, the joint of the intermediate-frequency area and the low-frequency area is connected with the first end of the second voice coil, and the second end of the first voice coil is inserted into the first voice coil groove. The second end of the second voice coil is inserted into the second voice coil groove. According to the invention, the sound pressure response energy of three frequencies can be respectively regulated and changed, so that the loudspeaker frequency response effect of required smoothly extended low and medium frequency sound pressure is generated.

Description

Technical Field

[0001] The present invention relates to the technical field of loudspeakers, and in particular to a coaxial double-magnetic double-coil loudspeaker, and also to an earphone using the coaxial double-magnetic double-coil loudspeaker. Background Art

[0002] As people continue to pursue high-quality life, people have higher requirements for the sound quality of headphones. Common headphones and speakers on the market are divided into three independent speakers: high, medium and low frequencies. The voice coil in the permanent magnetic field drives the diaphragm connected to it to vibrate and produce sound. The sound generally pursues a three-frequency balanced sound effect. However, the music styles on the market are diversified, and ordinary headphones and speakers cannot reflect rich sound details. For example, the frequency response of conventional headphone speakers under magnetoelectric vibration usually has a large concave phenomenon in the frequency response area of ​​1KHz to 2KHz, and the frequency response cannot effectively meet the smooth demand.

[0003] Therefore, a more optimized coaxial dual-magnet dual-coil speaker is needed. Summary of the invention

[0004] The first object of the present invention is to provide a coaxial dual-magnet dual-coil speaker that can separately adjust and change the sound pressure response energy of three frequencies, thereby producing the required speaker frequency response effect of smoothly extended low-mid-frequency sound pressure.

[0005] The second object of the present invention is to provide an earphone that can separately adjust and change the sound pressure response energy of three frequencies, thereby producing the required speaker frequency response effect of smoothly extending low-intermediate frequency sound pressure.

[0006] In order to achieve the above-mentioned main purpose, the coaxial dual-magnet dual-coil speaker provided by the present invention includes a bracket, a U cup, a first annular magnet, a second annular magnet, a first voice coil, a second voice coil and a diaphragm, the bracket is provided with a mounting position, the U cup is installed in the mounting position, the first annular magnet and the second annular magnet are both installed in the U cup, the first annular magnet is located at the inner ring of the second annular magnet, and the first annular magnet and the second annular magnet are coaxially arranged; a first voice coil groove is formed between the outer ring of the first annular magnet and the inner ring of the second annular magnet, and the outer ring of the second annular magnet and the U cup form a second voice coil groove; the diaphragm forms a high-frequency region, a medium-frequency region and a low-frequency region in sequence along the radial direction from the axis line to the outside, the connection between the high-frequency region and the medium-frequency region is connected to the first end of the first voice coil, the connection between the medium-frequency region and the low-frequency region is connected to the first end of the second voice coil, the second end of the first voice coil is inserted into the first voice coil groove, and the second end of the second voice coil is inserted into the second voice coil groove.

[0007] It can be seen from the above scheme that the coaxial double-magnet double-coil speaker of the present invention is provided with a first annular magnet, a second annular magnet, a first voice coil, a second voice coil and a diaphragm, so that the first annular magnet and the second annular magnet are coaxially arranged, and at the same time, the first voice coil, the second voice coil and the diaphragm forming the high frequency area, the intermediate frequency area and the low frequency area are designed with an inner and outer annular array with a coaxial axis to form a coaxially arranged sound film combination; the first voice coil and the second voice coil can simultaneously generate magnetoelectric resonance, provide stronger vibration energy to the high frequency area, the intermediate frequency area and the low frequency area, thereby generating the required smooth extension of the low intermediate frequency sound pressure speaker frequency response effect, and optimizing the transient response. It can better separate the layers of low, medium and high frequency sounds, making the sound wider, richer, clearer, brighter, more transparent and delicate.

[0008] In a further scheme, the low-frequency region is provided with a first stripe group and a second stripe group uniformly arranged along the circumference of the low-frequency region, the first stripes in the first stripe group and the second stripes in the second stripe group both extend from the inner ring to the outer ring of the low-frequency region, the length of the second stripe is less than the length of the first stripe, the second stripe is located between two adjacent first stripes, and the second stripe is located on the outer ring side close to the low-frequency region.

[0009] It can be seen that the low-frequency area is in the outer diameter area of ​​the diaphragm, the vibration area is large, and wrinkles are easily generated in the outer edge area. By setting the long and short stripes of the annular array structure, the rigidity of this area can be physically reinforced, the deformation of the speaker diaphragm during vibration operation can be reduced, and the waveform wrinkles generated by the speaker diaphragm during vibration operation can be reduced, thereby improving the high fidelity of the transient response of mid- and low-frequency vibration operation.

[0010] In a further scheme, the high-frequency region, the mid-frequency region and the low-frequency region all bulge in the direction away from the U cup, the bulge height of the high-frequency region and the bulge height of the low-frequency region are both greater than the bulge height of the mid-frequency region, and the bulge height of the high-frequency region is greater than the bulge height of the low-frequency region.

[0011] It can be seen that the high-frequency area, mid-frequency area and low-frequency area all bulge in the direction away from the U cup, which can optimize the frequency response and at the same time increase the rigidity of the diaphragm.

[0012] In a further scheme, a first through hole is provided at the bottom center position of the U cup, the inner ring hole of the first annular magnet is communicated with the first through hole, and the side of the inner ring hole facing away from the diaphragm is covered with a first tuning net; a plurality of second through holes are also provided at the bottom of the U cup, and the plurality of second through holes are evenly arranged along the circumference of the U cup, the second through holes are communicated with the first voice coil groove, and the side of the second through hole facing away from the diaphragm is covered with a second tuning net; a plurality of third through holes are provided at the bracket, and the plurality of third through holes are evenly arranged along the circumference of the bracket, the third through holes face the low-frequency region of the diaphragm, and the side of the third through hole facing away from the diaphragm is covered with a third tuning net.

[0013] It can be seen that the inner ring hole of the first annular magnet, the second through hole and the third through hole form a low, medium and high frequency annular array breathable structure with the same central axis, which can be adjusted separately through the tuning network to change the sound pressure response energy of the three frequencies, thereby producing the required low and medium frequency sound pressure speaker frequency response effect.

[0014] In a further solution, the axis line of the inner ring hole of the first annular magnet is located at the center of the speaker; the axis line of the second through hole is located at the position of the inner diameter D1 / 1.06 of the U cup to the inner diameter D1 / 1.1 of the U cup; the axis line of the third through hole is located at the position of the outer diameter D2 / 1.1 of the diaphragm to the outer diameter D2 / 1.2 of the diaphragm.

[0015] It can be seen that the position settings of the inner ring hole, the second through hole and the third through hole of the first ring magnet can optimize the acoustic structure and improve the frequency response effects of the low, medium and high frequencies.

[0016] In a further solution, a tuning net groove is provided on a side of the bracket facing away from the diaphragm, and the third tuning net is located in the tuning net groove.

[0017] It can be seen that by providing the tuning net slot, the third tuning net can be easily fixedly installed.

[0018] In a further embodiment, the speaker further includes a first annular washer and a second annular washer, the first annular washer covers the first annular magnet, and the second annular washer covers the second annular magnet.

[0019] It can be seen that the first annular washer, the second annular washer, the first annular magnet and the second annular magnet form a coaxial dual-magnetic magnetic circuit setting, which respectively provide stronger magnetic and electric energy corresponding to the frequency vibration requirements, generate the smoothly extended low and medium frequencies required by the speaker, and improve the frequency response effect of the speaker.

[0020] In a further solution, the width of the first annular washer is equal to the width of the first annular magnet; the width of the second annular washer is equal to the width of the second annular magnet.

[0021] It can be seen that the equal width of the annular washer and the annular magnet can make the magnetic field more uniform and stable during the transmission process from the magnet to the washer, and the equal width can accurately guide and control the magnetic field in the area and optimize the frequency response of the sound.

[0022] In a further embodiment, the diameter of the high-frequency region is 11 mm to 20 mm, the width of the medium-frequency region is 6 mm to 8 mm, and the width of the low-frequency region is 9 mm to 15 mm.

[0023] In order to achieve the above second purpose, the earphones provided by the present invention are provided with a speaker, and the speaker adopts the above coaxial double-magnetic double-coil speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an embodiment of a coaxial double-magnet double-coil speaker of the present invention.

[0025] Figure 2 It is a structural exploded view of a coaxial double-magnet double-coil speaker embodiment of the present invention.

[0026] Figure 3 It is a structural cross-sectional view of a coaxial double-magnet double-coil speaker embodiment of the present invention.

[0027] Figure 4 It is a structural diagram from one perspective of the bracket in the coaxial double-magnet double-coil speaker embodiment of the present invention.

[0028] Figure 5 This is a structural diagram from another perspective of the bracket in the coaxial double-magnetic double-circuit speaker embodiment of the present invention.

[0029] Figure 6 It is a structural diagram of the U cup in the coaxial double-magnet double-coil speaker embodiment of the present invention.

[0030] Figure 7 It is a structural diagram of the diaphragm in the coaxial double-magnet double-coil speaker embodiment of the present invention.

[0031] Figure 8 It is a structural cross-sectional view of the diaphragm in the coaxial double-magnet double-coil speaker embodiment of the present invention.

[0032] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0033] Coaxial double-magnet double-coil speaker embodiment:

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the coaxial dual-magnet dual-coil speaker includes a bracket 1, a U cup 2, a first annular magnet 3, a second annular magnet 4, a first annular washer 5, a second annular washer 6, a first voice coil 7, a second voice coil 8 and a diaphragm 9.

[0035] See also Figure 4 and Figure 5The bracket 1 is provided with a mounting position 11, the U cup 2 is installed in the mounting position 11, the first annular magnet 3 and the second annular magnet 4 are both installed in the U cup 2, the first annular magnet 3 is located in the inner ring of the second annular magnet 4, and the first annular magnet 3 and the second annular magnet 4 are coaxially arranged. The first annular washer 5 covers the first annular magnet 3, and the second annular washer 6 covers the second annular magnet 4. The first annular washer 5, the second annular washer 6, the first annular magnet 3 and the second annular magnet 4 form a coaxial double-magnetic magnetic circuit arrangement, which respectively provide stronger magnetic and electric energy corresponding to the frequency vibration requirements, and produce the smoothly extended low-intermediate frequency required by the speaker.

[0036] In this embodiment, the width of the first annular washer 5 is equal to the width of the first annular magnet 3, and the width of the second annular washer 6 is equal to the width of the second annular magnet 4. The equal width of the annular washer and the annular magnet can make the magnetic field more uniform and stable during the transmission process from the magnet to the washer, and the equal width can accurately guide and control the magnetic field in the area, thereby optimizing the frequency response of the sound.

[0037] In this embodiment, a first voice coil groove 41 is formed between the outer ring of the first annular magnet 3 and the inner ring of the second annular magnet 4, and a second voice coil groove 42 is formed between the outer ring of the second annular magnet 4 and the U cup 2. The diaphragm 9 is arranged in a circular shape, and the diaphragm 9 forms a high-frequency region 91, a medium-frequency region 92 and a low-frequency region 93 in the radial direction from the axis to the outside. The connection between the high-frequency region 91 and the medium-frequency region 92 is connected to the first end of the first voice coil 7, and the connection between the medium-frequency region 92 and the low-frequency region 93 is connected to the first end of the second voice coil 8. The second end of the first voice coil 7 is inserted into the first voice coil groove 41, and the second end of the second voice coil 8 is inserted into the second voice coil groove 42.

[0038] See also Figure 6 A first through hole 21 is provided at the center of the bottom of the U cup 2. The inner ring hole 31 of the first annular magnet 3 is connected to the first through hole 21. The side of the inner ring hole 31 facing away from the diaphragm 9 is covered with a first tuning net 10. A plurality of second through holes 22 are also provided at the bottom of the U cup 2. The plurality of second through holes 22 are evenly arranged along the circumference of the U cup 2. The second through holes 22 are connected to the first voice coil groove 41. The side of the second through holes 22 facing away from the diaphragm 9 is covered with a second tuning net 20. Figure 4 It can be seen that the bracket 1 is provided with a plurality of third through holes 12, which are evenly arranged along the circumference of the bracket 1, the third through holes 12 face the low-frequency region 93 of the diaphragm 9, and the side of the third through holes 12 facing away from the diaphragm 9 is covered with a third tuning mesh 30. Figure 5It can be seen that a tuning net groove 13 is provided on the side of the bracket 1 facing away from the diaphragm 9, and the third tuning net 30 is located in the tuning net groove 13. The inner ring hole 31 of the first annular magnet 3, the second through hole 22 and the third through hole 12 form a ventilated structure of a low, medium and high frequency annular array with the same central axis, which can be adjusted separately through the tuning net to change the sound pressure response energy of the three frequencies, thereby producing the required low and medium frequency sound pressure speaker frequency response effect.

[0039] In this embodiment, the axis of the inner ring hole 31 of the first annular magnet 3 is located at the center of the speaker. The axis of the second through hole 22 is located at the position of the inner diameter D1 / 1.06 of the U cup 2 to the inner diameter D1 / 1.1 of the U cup 2. The axis of the third through hole 12 is located at the position of the outer diameter D2 / 1.1 of the diaphragm 9 to the outer diameter D2 / 1.2 of the diaphragm 9. The position setting of the inner ring hole 31 of the first annular magnet 3, the second through hole 22 and the third through hole 12 can optimize the acoustic structure and improve the frequency response effects of the low, medium and high frequencies.

[0040] See also Figure 7 The low-frequency region 93 is provided with a first stripe group and a second stripe group uniformly arranged along the circumference of the low-frequency region 93. The first stripe 931 in the first stripe group and the second stripe 932 in the second stripe group both extend from the inner ring to the outer ring of the low-frequency region 93. The length of the second stripe 932 is less than the length of the first stripe 931. The second stripe 932 is located between two adjacent first stripes 931, and the second stripe 932 is located on the outer ring side close to the low-frequency region 93. Since the low-frequency region 93 is in the outer diameter area of ​​the diaphragm 9, the vibration area is large, and the outer edge area is prone to wrinkles. By setting the first stripe 931 and the second stripe 932 of the annular array structure, the rigidity of the low-frequency region 93 can be physically reinforced, the deformation of the diaphragm 9 during vibration operation can be reduced, the waveform wrinkles generated by the diaphragm 9 during vibration operation can be reduced, and the high fidelity of the transient response of the low- and medium-frequency vibration operation can be improved.

[0041] In addition, in this embodiment, see Figure 8 , the high-frequency region 91, the mid-frequency region 92 and the low-frequency region 93 are all raised in the direction away from the U cup 2, and the raised height of the high-frequency region 91 and the raised height of the low-frequency region 93 are both greater than the raised height of the mid-frequency region 92, and the raised height of the high-frequency region 91 is greater than the raised height of the low-frequency region 93. The high-frequency region 91, the mid-frequency region 92 and the low-frequency region 93 are all raised in the direction away from the U cup 2, which can optimize the frequency response and improve the rigidity of the diaphragm 9 at the same time. In this embodiment, the high-frequency region 91 is arranged in a cone shape, and the mid-frequency region 92 and the low-frequency region 93 are arranged in a circular ring shape. The diameter of the high-frequency region 91 is 11mm to 20mm, the width of the mid-frequency region 92 is 6mm to 8mm, and the width of the low-frequency region 93 is 9mm to 15mm.

[0042] As can be seen from the above, the coaxial double-magnet double-coil speaker of the present invention is provided with the first annular magnet 3, the second annular magnet 4, the first voice coil 7, the second voice coil 8 and the diaphragm 9, so that the first annular magnet 3 and the second annular magnet 4 are coaxially arranged, and at the same time, the first voice coil 7, the second voice coil 8 and the diaphragm 9 forming the high frequency region 91, the intermediate frequency region 92 and the low frequency region 93 are designed with the inner and outer annular arrays of the same central axis to form a coaxially arranged sound film combination; the first voice coil 7 and the second voice coil 8 can simultaneously generate magnetoelectric resonance, and provide stronger vibration energy to the high frequency region 91, the intermediate frequency region 92 and the low frequency region 93, thereby generating the required smooth extension of the low intermediate frequency sound pressure speaker frequency response effect, and optimizing the transient response. It can better separate the layers of the low, medium and high frequency sounds, making the sound wider, richer, clearer, brighter, more transparent and more delicate.

[0043] Headphones Example:

[0044] In this embodiment, the earphone is provided with a speaker, and the speaker adopts the coaxial double-magnetic double-coil speaker of the above embodiment.

[0045] It should be noted that the above are only preferred embodiments of the present invention, but the design concept of the invention is not limited thereto, and any non-substantial modifications made to the present invention using this concept also fall within the protection scope of the present invention.

Claims

1. A coaxial double-magnet double-coil speaker, characterized by: It includes a bracket, a U cup, a first annular magnet, a second annular magnet, a first voice coil, a second voice coil and a diaphragm, wherein the bracket is provided with a mounting position, the U cup is mounted in the mounting position, the first annular magnet and the second annular magnet are both mounted in the U cup, the first annular magnet is located in the inner ring of the second annular magnet, and the first annular magnet and the second annular magnet are coaxially arranged; A first voice coil groove is formed between the outer ring of the first annular magnet and the inner ring of the second annular magnet, and a second voice coil groove is formed between the outer ring of the second annular magnet and the U cup; The diaphragm forms a high-frequency region, a medium-frequency region and a low-frequency region in sequence radially outward from the axis line, the connection between the high-frequency region and the medium-frequency region is connected to the first end of the first voice coil, the connection between the medium-frequency region and the low-frequency region is connected to the first end of the second voice coil, the second end of the first voice coil is inserted into the first voice coil groove, and the second end of the second voice coil is inserted into the second voice coil groove.

2. The coaxial double-magnet double-coil speaker according to claim 1, characterized in that: The low-frequency region is provided with a first stripe group and a second stripe group uniformly arranged along the circumference of the low-frequency region, the first stripes in the first stripe group and the second stripes in the second stripe group both extend from the inner ring to the outer ring of the low-frequency region, the length of the second stripe is smaller than the length of the first stripe, the second stripe is located between two adjacent first stripes, and the second stripe is located on the outer ring side close to the low-frequency region.

3. The coaxial double-magnet double-coil speaker according to claim 2, characterized in that: The high-frequency region, the mid-frequency region and the low-frequency region all bulge in a direction away from the U cup, and the bulging height of the high-frequency region and the bulging height of the low-frequency region are both greater than the bulging height of the mid-frequency region, and the bulging height of the high-frequency region is greater than the bulging height of the low-frequency region.

4. The coaxial double-magnet double-coil speaker according to claim 3, characterized in that: A first through hole is provided at the center of the bottom of the U cup, the inner ring hole of the first annular magnet is connected to the first through hole, and a side of the inner ring hole facing away from the diaphragm is covered with a first tuning net; The bottom of the U cup is also provided with a plurality of second through holes, the plurality of second through holes are evenly arranged along the circumference of the U cup, the second through holes are communicated with the first voice coil groove, and a side of the second through holes facing away from the diaphragm is covered with a second tuning net; The bracket is provided with a plurality of third through holes, which are evenly arranged along the circumference of the bracket, the third through holes face the low-frequency region of the diaphragm, and the side of the third through holes facing away from the diaphragm is covered with a third tuning net.

5. The coaxial double-magnet double-coil speaker according to claim 4, characterized in that: The axis of the inner ring hole of the first annular magnet is located at the center of the horn; The axis of the second through hole is located at a position between the inner diameter D1 / 1.06 of the U cup and the inner diameter D1 / 1.1 of the U cup; The axis center line of the third through hole is located at a position between the outer diameter D2 / 1.1 of the diaphragm and the outer diameter D2 / 1.2 of the diaphragm.

6. The coaxial double-magnet double-coil speaker according to claim 4, characterized in that: A tuning net groove is arranged on a side of the bracket facing away from the diaphragm, and the third tuning net is located in the tuning net groove.

7. The coaxial double-magnet double-coil speaker according to any one of claims 1 to 6, characterized in that: The speaker further includes a first annular washer and a second annular washer, wherein the first annular washer covers the first annular magnet, and the second annular washer covers the second annular magnet.

8. The coaxial double-magnet double-coil speaker according to claim 7, characterized in that: The width of the first annular washer is equal to the width of the first annular magnet; The width of the second annular washer is equal to the width of the second annular magnet.

9. The coaxial double-magnet double-coil speaker according to any one of claims 1 to 6, characterized in that: The diameter of the high-frequency region is 11 mm to 20 mm, the width of the medium-frequency region is 6 mm to 8 mm, and the width of the low-frequency region is 9 mm to 15 mm.

10. An earphone provided with a speaker, characterized in that: The speaker adopts the coaxial double-magnet double-coil speaker as described in any one of claims 1 to 9.

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