Coaxial double-magnetic double-ring loudspeaker and earphone

Abstract

The utility model 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 utility model, 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] This utility model relates to the field of loudspeaker technology, specifically to a coaxial dual-magnet dual-coil loudspeaker, and also to headphones using this coaxial dual-magnet dual-coil loudspeaker. Background Technology

[0002] As people continuously pursue a high-quality life, their demands for headphone sound quality are also increasing. Common headphones and speakers on the market are generally categorized into three independent frequency ranges: high, mid, and low. Speakers are driven by a voice coil in a permanent magnetic field, which vibrates a connected diaphragm to produce sound. Sound generally aims for a balanced three-frequency response. However, with the diversification of music genres on the market today, ordinary headphones and speakers cannot reproduce rich sound details. For example, the frequency response of conventional headphone speakers under electromagnetic vibration typically exhibits a significant dip in the 1kHz to 2kHz range (e.g., ...). Figure 1 (As shown), the frequency response cannot effectively meet the requirements for smoothness.

[0003] Therefore, a more optimized coaxial dual-magnet dual-coil speaker is needed. Utility Model Content

[0004] The primary objective of this invention is to provide a coaxial dual-magnet dual-coil speaker that can independently adjust and change the sound pressure response energy of the three frequencies, thereby producing the desired smooth and extended low-mid frequency sound pressure effect.

[0005] The second objective of this invention is to provide an earphone whose sound pressure response energy can be individually adjusted and changed across the three frequencies, thereby producing the desired smooth and extended low-to-mid frequency sound pressure response effect.

[0006] To achieve the aforementioned main objectives, the coaxial dual-magnet dual-coil speaker provided by this utility model 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, and the U-cup is installed in the mounting position. Both the first and second annular magnets are installed inside the U-cup, with the first annular magnet located in the inner ring of the second annular magnet. The first and second annular magnets 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 mid-frequency region, and a low-frequency region radially outward from the axis. The connection between the high-frequency region and the mid-frequency region is connected to the first end of the first voice coil, and the connection between the mid-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] As can be seen from the above scheme, the coaxial dual-magnet dual-coil speaker of this utility model, by setting a first annular magnet, a second annular magnet, a first voice coil, a second voice coil, and a diaphragm, makes the first and second annular magnets coaxially arranged. Simultaneously, the first and second voice coils, along with the diaphragm forming the high-frequency, mid-frequency, and low-frequency regions, are arranged in an inner and outer annular array design with a central axis, forming a coaxially arranged diaphragm combination. This allows the first and second voice coils to simultaneously generate magnetoelectric resonance, providing stronger vibrational energy to the high-frequency, mid-frequency, and low-frequency regions, thereby producing the desired smooth and extended low-mid-frequency sound pressure level speaker frequency response effect and optimized transient response. It can better separate the layers of low, mid, and high-frequency sounds, making the sound wider, richer, clearer, brighter, more transparent, and more delicate.

[0008] In a further embodiment, the low-frequency region is provided with a first stripe group and a second stripe group that are uniformly arranged circumferentially along the low-frequency region. The first stripe in the first stripe group and the second stripe in the second stripe group both extend along the direction 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 is located on the outer ring side closer to the low-frequency region.

[0009] It can be seen that the low-frequency region is located in the outer diameter area of ​​the diaphragm, with a large vibration area, and the outer edge area is prone to wrinkling. By setting long and short stripes of a ring array structure, the rigidity of this area can be physically reinforced, reducing the deformation of the diaphragm during vibration, reducing the waveform wrinkles generated by the diaphragm during vibration, and improving the high fidelity of the transient response during mid-low frequency vibration.

[0010] In a further design, the high-frequency region, mid-frequency region, and low-frequency region all bulge in the direction away from the U-cup. The bulge height of the high-frequency region and 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, mid-frequency and low-frequency regions all bulge in the direction away from the U-cup, which can optimize the frequency response and improve the rigidity of the diaphragm.

[0012] In a further embodiment, a first through-hole is provided at the center of the bottom of the U-cup, and the inner ring hole of the first annular magnet communicates with the first through-hole. The side of the inner ring hole facing away from the diaphragm is covered with a first tuning mesh. The bottom of the U-cup is also provided with multiple second through-holes, which are evenly arranged around the circumference of the U-cup. The second through-holes communicate 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 mesh. The bracket is provided with multiple third through-holes, which are evenly arranged around 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 mesh.

[0013] It can be seen that the inner ring hole, the second through hole and the third through hole of the first ring magnet form a ring array air-permeable structure with low, medium and high frequencies on the same central axis. The sound pressure response energy of the three frequencies can be adjusted and changed by the tuning mesh, thereby producing the desired low and medium frequency sound pressure speaker frequency response effect.

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

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

[0016] In a further design, a tuning mesh groove is provided on the side of the support facing away from the diaphragm, and a third tuning mesh is located inside the tuning mesh groove.

[0017] Therefore, by setting up a tuning mesh slot, it is easy to fix and install the third tuning mesh.

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

[0019] It can be seen that the first ring washer, the second ring washer, the first ring magnet and the second ring magnet form a coaxial dual-magnetic circuit, which provides stronger magnetoelectric energy for the corresponding frequency vibration requirements, generates the smooth and extended low-mid frequency required by the speaker, and improves the speaker's frequency response.

[0020] In a further embodiment, 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] Therefore, it can be seen that the equal width of the toroidal washer and the toroidal magnet allows the magnetic field to be transmitted more evenly and stably from the magnet to the washer. Furthermore, the equal width allows for precise guidance and control of the magnetic field in the area, thus optimizing the frequency response of the sound.

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

[0023] To achieve the second objective mentioned above, the earphone provided by this utility model is equipped with a speaker, which adopts the aforementioned coaxial dual-magnet dual-coil speaker. Attached Figure Description

[0024] Figure 1 This is a structural diagram of an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0025] Figure 2 This is an exploded view of the structure of an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0026] Figure 3 This is a structural cross-sectional view of an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0027] Figure 4 This is a structural diagram of the bracket from one perspective in an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0028] Figure 5 This is a structural diagram of the bracket from another perspective in an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0029] Figure 6 This is a structural diagram of the U-cup in an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0030] Figure 7 This is a structural diagram of the diaphragm in an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0031] Figure 8 This is a cross-sectional view of the diaphragm structure in an embodiment of the coaxial dual-magnet dual-coil speaker of this utility model.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0033] Example of a coaxial dual-magnet dual-coil speaker:

[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 Figure 4 and Figure 5The bracket 1 has a mounting position 11, and 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, with the first annular magnet 3 located within the inner ring of the second annular magnet 4. The first annular magnet 3 and the second annular magnet 4 are coaxially arranged. A first annular washer 5 covers the first annular magnet 3, and a 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 dual-magnetic circuit, providing stronger magnetoelectric energy for the corresponding frequency vibration requirements, generating the smooth and extended low-mid 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 allows for a more uniform and stable transmission of the magnetic field from the magnet to the washer. Furthermore, the equal width enables precise guidance and control of the magnetic field in the corresponding area, 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 circularly arranged, and a high-frequency region 91, a mid-frequency region 92, and a low-frequency region 93 are formed radially outward from the axis. The connection between the high-frequency region 91 and the mid-frequency region 92 is connected to the first end of the first voice coil 7, and the connection between the mid-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 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 communicates with 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 mesh 10. Multiple second through holes 22 are also provided at the bottom of the U-cup 2. These multiple second through holes 22 are evenly arranged around the circumference of the U-cup 2. The second through holes 22 communicate with 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 mesh 20. Figure 4 It can be seen that the bracket 1 is provided with multiple third through holes 12, which are evenly arranged around 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. In this embodiment, by Figure 5It can be seen that a tuning mesh groove 13 is provided on the side of the bracket 1 facing away from the diaphragm 9, and the third tuning mesh 30 is located in the tuning mesh groove 13. The inner ring hole 31, the second through hole 22 and the third through hole 12 of the first annular magnet 3 form a breathable structure of a ring array of low, mid and high frequencies on the same central axis. The sound pressure response energy of the three frequencies can be adjusted and changed by the tuning mesh, thereby producing the desired low and mid 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 between the inner diameter D1 / 1.06 and the inner diameter D1 / 1.1 of the U-cup 2. The axis of the third through hole 12 is located between the outer diameter D2 / 1.1 and the outer diameter D2 / 1.2 of the diaphragm 9. The positioning of the inner ring hole 31, the second through hole 22, and the third through hole 12 of the first annular magnet 3 optimizes the acoustic structure and improves the frequency response of the low, mid, and high frequencies.

[0040] See Figure 7 The low-frequency region 93 is provided with a first stripe group and a second stripe group uniformly arranged circumferentially along 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 is located on the outer ring side closer to the low-frequency region 93. Since the low-frequency region 93 is located in the outer diameter region of the diaphragm 9, the vibration area is large, and wrinkles are easily generated in the outer edge region. By setting the first stripe 931 and the second stripe 932 in a ring 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 during mid-to-low frequency vibration operation can be improved.

[0041] In addition, in this embodiment, see Figure 8 The high-frequency region 91, mid-frequency region 92, and low-frequency region 93 all bulge in the direction away from the U-cup 2. The bulge height of the high-frequency region 91 and the low-frequency region 93 are both greater than the bulge height of the mid-frequency region 92, and the bulge height of the high-frequency region 91 is greater than that of the low-frequency region 93. The bulge of the high-frequency region 91, mid-frequency region 92, and low-frequency region 93 in the direction away from the U-cup 2 optimizes the frequency response and improves the rigidity of the diaphragm 9. In this embodiment, the high-frequency region 91 is conical, while the mid-frequency region 92 and low-frequency region 93 are annular. 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 described above, the coaxial dual-magnet dual-coil speaker of this invention, by setting a first annular magnet 3, a second annular magnet 4, a first voice coil 7, a second voice coil 8, and a diaphragm 9, makes the first annular magnet 3 and the second annular magnet 4 coaxially arranged. Simultaneously, the first voice coil 7, the second voice coil 8, and the diaphragm 9, which forms the high-frequency region 91, the mid-frequency region 92, and the low-frequency region 93, are arranged in an inner and outer annular array design with a central axis, forming a coaxially arranged diaphragm combination. This allows the first voice coil 7 and the second voice coil 8 to simultaneously generate magnetoelectric resonance, providing stronger vibrational energy to the high-frequency region 91, the mid-frequency region 92, and the low-frequency region 93, thereby producing the desired smooth and extended low-mid frequency sound pressure level speaker frequency response effect and optimized transient response. It can better separate the layers of low, mid, and high frequency sounds, making the sound wider, richer, clearer, brighter, more transparent, and more delicate.

[0043] Headphone Example:

[0044] In this embodiment, the earphone is equipped with a speaker, which is a coaxial dual-magnet dual-coil speaker as described in the above embodiment.

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

Claims

1. A coaxial dual-magnet dual-coil speaker, characterized in that: The device 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 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 mid-frequency region, and a low-frequency region in a radial direction outward from the centerline. The connection between the high-frequency region and the mid-frequency region is connected to the first end of the first voice coil, and the connection between the mid-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 slot, and the second end of the second voice coil is inserted into the second voice coil slot.

2. The coaxial dual-magnet dual-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 that are uniformly arranged circumferentially along the low-frequency region. The first stripe in the first stripe group and the second stripe in the second stripe group both extend along the inner ring to the outer ring direction 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 is located on the outer ring side closer to the low-frequency region.

3. The coaxial dual-magnet dual-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. 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.

4. The coaxial dual-magnet dual-coil speaker according to claim 3, characterized in that: The bottom center of the U-cup has a first through hole, the inner ring hole of the first annular magnet is connected to the first through hole, and the side of the inner ring hole facing away from the diaphragm is covered with a first tuning mesh. The bottom of the U-cup is also provided with a plurality of second through holes, which are evenly arranged along the circumference of the U-cup. The second through holes are connected to the first voice coil groove, and the side of the second through holes facing away from the diaphragm is covered with a second tuning mesh. 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 mesh.

5. The coaxial dual-magnet dual-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 between the inner diameter D1 / 1.06 and the inner diameter D1 / 1.1 of the U-cup; The axis of the third through hole is located between the outer diameter D2 / 1.1 and the outer diameter D2 / 1.2 of the diaphragm.

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

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

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

10. An earphone equipped with a speaker, characterized in that: The loudspeaker is a coaxial dual-magnet dual-coil loudspeaker as described in any one of claims 1 to 9.

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