Sound production unit

Abstract

The utility model discloses a sound production unit, which comprises at least two voice coils, the at least two voice coils are sequentially arranged side by side, and the two adjacent voice coils are in contact with each other, so that a contact position is formed between the two adjacent voice coils; the dome is arranged at the tops of the at least two voice coils, and the dome is provided with a reinforcing part corresponding to the contact position; and the reinforcing plate is arranged on the reinforcing part. The reinforcing part is arranged on the spherical top of the sounding unit, the reinforcing plate is arranged on the reinforcing part, and the reinforcing part and the reinforcing plate can improve the structural strength of the spherical top of the sounding unit, so that the spherical top is prevented from collapsing, deforming and breaking when the sounding unit falls, and the falling reliability of the sounding unit is high.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a sound generating unit. Background Art

[0002] With the development of electronic technology, mobile phones, tablet computers, AR / VR and other electronic devices tend to be thinner and more high-performance. As an important component of such products, the sound unit has higher and higher requirements in terms of performance and size. Existing sound units improve their sound performance by increasing the number of voice coils and reduce the thickness of their domes to achieve the effect of reducing size. However, when a multi-voice coil sound unit falls, the multiple voice coils will have relative displacement, which causes each voice coil to pull the dome. The thin dome is prone to collapse, deformation, and fracture under the pulling effect, thus causing damage to the sound unit. Utility Model Content

[0003] The technical problem to be solved by the utility model is: the utility model provides a sound unit to solve the problem of low reliability of the ball top of the existing sound unit in preventing from falling.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sound unit, which includes:

[0005] At least two voice coils, wherein at least two of the voice coils are arranged side by side in sequence, and two adjacent voice coils are in contact with each other, so that there is a contact position between the two adjacent voice coils;

[0006] A dome, the dome being disposed on top of at least two of the voice coils, and the dome being provided with a reinforcement portion corresponding to the contact position;

[0007] A reinforcing plate is arranged on the reinforcing portion.

[0008] Furthermore, the dome is recessed downward corresponding to the contact position to form the reinforcement portion.

[0009] Furthermore, the reinforcing plate is arranged on a side of the reinforcing portion away from the contact position.

[0010] Furthermore, the dome protrudes upwards corresponding to the contact position to form the reinforcement portion.

[0011] Furthermore, the reinforcing plate is arranged on a side of the reinforcing portion close to the contact position.

[0012] Furthermore, the reinforcement portion is a groove provided on the upper surface or the lower surface of the dome, and the reinforcement plate is provided in the groove.

[0013] Furthermore, it also includes at least two center washers corresponding to at least two of the voice coils, the center washers are arranged in the voice coils, and a side of the center washers close to the dome is provided with an avoidance groove corresponding to the reinforcement part.

[0014] Furthermore, the reinforcement portion is bonded to the contact position, and a glue overflow port is provided on the center washer.

[0015] Furthermore, at least two of the voice coils are arranged side by side along the width direction of the sound generating unit, and the long sides of two adjacent voice coils are in contact with each other.

[0016] Furthermore, the reinforcement portion extends along the arrangement direction of the two adjacent voice coils, so that the reinforcement portion spans over the two adjacent voice coils.

[0017] The beneficial effect of the utility model is that the utility model provides a sound unit, a reinforcement part is arranged on the ball top of the sound unit, and a reinforcing plate is arranged on the reinforcement part, the reinforcement part and the reinforcement plate can improve the structural strength of the ball top of the sound unit to avoid collapse, deformation and breakage of the ball top when the sound unit falls, and the sound unit has high falling reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the sound-generating unit of the utility model in one embodiment;

[0019] Figure 2 for Figure 1 An exploded diagram of the sound unit structure is shown;

[0020] Figure 3 for Figure 2 The schematic diagram of the center washer structure shown;

[0021] Figure 4 for Figure 1 A cross-sectional view of the sound unit shown;

[0022] Figure 5 for Figure 4 A schematic diagram of the structure enlargement of part A;

[0023] Figure 6 It is an enlarged schematic diagram of the structure of part A of the sound-generating unit of the utility model in another embodiment;

[0024] Figure 7 It is a schematic diagram of the enlarged structure of part A of the sound-emitting unit of the utility model in another embodiment.

[0025] Description of labels:

[0026] 1. Voice coil;

[0027] 2. Contact position;

[0028] 3. Dome; 31. Reinforcement;

[0029] 4. Reinforcement plate;

[0030] 5. Center washer; 51. Avoidance groove; 52. Glue overflow port;

[0031] 6. Centering support piece;

[0032] 7. Center magnet;

[0033] 8. Edge magnetic steel;

[0034] 9. Magnetic cover;

[0035] 10. Basin rack;

[0036] 11. Diaphragm. DETAILED DESCRIPTION

[0037] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0038] Please refer to Figures 1 to 7 , a sound unit, comprising:

[0039] At least two voice coils 1, wherein at least two of the voice coils 1 are arranged side by side in sequence, and two adjacent voice coils 1 are in contact with each other, so that there is a contact position 2 between the two adjacent voice coils 1;

[0040] A dome 3, the dome 3 being disposed on the top of at least two of the voice coils 1, and the dome 3 being provided with a reinforcement portion 31 corresponding to the contact position 2;

[0041] The reinforcing plate 4 is disposed on the reinforcing portion 31 .

[0042] The structural principle of the present invention is briefly described as follows: a reinforcement portion 31 is provided on the dome 3 of the sound unit provided by the present invention at a contact position 2 corresponding to two adjacent voice coils 1. When the sound unit falls and causes relative displacement between the two adjacent voice coils 1, and the two voice coils 1 exert a pulling effect on the dome 3, the reinforcement portion 31 can absorb the deformation of the dome 3 caused by the pulling effect and release the stress of the dome 3, and the reinforcement plate 4 can improve the structural rigidity of the reinforcement portion 31, thereby preventing the dome 3 from collapsing, deforming, and breaking under the pulling effect of the voice coil 1.

[0043] From the above description, it can be seen that the beneficial effect of the utility model is that: the ball top 3 of the sound unit provided by the utility model is provided with a reinforcement part 31, and a reinforcement plate 4 is provided on the reinforcement part 31. The reinforcement part 31 and the reinforcement plate 4 can improve the structural strength of the ball top 3 of the sound unit to avoid collapse, deformation and breakage of the ball top 3 when the sound unit falls, and the sound unit has high falling reliability.

[0044] Furthermore, the ball top 3 is recessed downward corresponding to the contact position to form the reinforcement portion 31 .

[0045] Furthermore, the reinforcing plate 4 is disposed on a side of the reinforcing portion 31 away from the contact position 2 .

[0046] From the above description, it can be known that the reinforcement portion 31 can be a concave structure on the dome 3, wherein the reinforcing plate 4 is arranged on one side of the concave structure close to the contact position 2, which ensures that the overall thickness of the dome 3 does not increase.

[0047] Furthermore, the ball top 3 protrudes upwards corresponding to the contact position 2 to form the reinforcement portion 31 .

[0048] Furthermore, the reinforcing plate 4 is disposed on a side of the reinforcing portion 31 close to the contact position 2 .

[0049] It can be known from the above description that the reinforcement portion 31 can be a boss structure on the spherical top 3 .

[0050] Furthermore, the reinforcement portion 31 is a groove provided on the upper surface or the lower surface of the dome 3 , and the reinforcement plate 4 is provided in the groove.

[0051] It can be seen from the above description that the thickness of the groove is relatively thin, and the reinforcing plate 4 can improve the structural rigidity of the groove to prevent the groove from being deformed or broken.

[0052] Furthermore, it also includes at least two center washers 5 corresponding to at least two of the voice coils 1 , the center washers 5 are arranged in the voice coils 1 , and a side of the center washers 5 close to the dome 3 is provided with an avoidance groove 51 corresponding to the reinforcement part 31 .

[0053] It can be seen from the above description that when the sound unit falls, the avoidance groove 51 can prevent the central washer 5 from colliding with the reinforcement part 31, thereby improving the anti-fall reliability of the sound unit.

[0054] Furthermore, the reinforcement portion 31 is bonded to the contact position 2 , and a glue overflow port 52 is provided on the center washer 5 .

[0055] From the above description, it can be seen that glue may overflow when the voice coil 1 is bonded to the first reinforcement part 31 , and a glue overflow port 52 is provided on the center washer 5 corresponding to the contact position 2 , which can prevent the glue from overflowing onto the center washer 5 and affecting the sound effect of the sound unit.

[0056] Furthermore, at least two of the voice coils 1 are arranged side by side along the width direction of the sound-emitting unit, and the long sides of two adjacent voice coils 1 are in contact with each other.

[0057] From the above description, it can be seen that the long sides of at least two voice coils 1 are arranged side by side, which can enable the sound-emitting unit to maximize the length of the voice coil 1. Correspondingly, the long sides of at least two center magnets 7 are arranged side by side, which can increase the aspect ratio of the center magnet 7, thereby improving the utilization efficiency of the center magnet 7 and increasing the magnetic induction density in the air gap of the sound-emitting unit.

[0058] Furthermore, the reinforcement portion 31 extends along the arrangement direction of the two adjacent voice coils 1 , so that the reinforcement portion 31 spans over the two adjacent voice coils 1 .

[0059] From the above description, it can be seen that the reinforcement part 31 spans over two adjacent voice coils 1. When the two adjacent voice coils 1 pull the dome 3 against each other due to falling, the reinforcement part 31 can absorb the deformation of the dome 3 caused by the two voice coils 1 and release the stress of the dome 3, thereby preventing the dome 3 from collapsing, deforming or breaking under the pulling action of the voice coils 1.

[0060] Embodiment 1

[0061] Please refer to Figures 1 to 5 Embodiment 1 of the utility model provides a sound unit, which includes a basin frame 10, a magnetic cover 9, a magnetic steel assembly, a center washer 5, a voice coil 1, a ball top 3 and a reinforcement plate 4. The magnetic cover 9 is arranged at the bottom of the basin frame 10, and the magnetic cover 9 and the basin frame 10 are surrounded to form an assembly groove. The magnetic steel assembly, the center washer 5 and the voice coil 1 are arranged in sequence from bottom to top in the assembly groove, and the ball top 3 is arranged at the top of the voice coil 1.

[0062] Specifically, in the first embodiment, the sound unit is provided with two voice coils 1, which are arranged side by side and contact each other, so that there is a contact position 2 between the two voice coils 1; the dome 3 is provided with a reinforcement portion 31 corresponding to the contact position 2. In addition, the current directions of the two voice coils 1 at the contact position 2 are opposite, and the polarities of the magnetic steels corresponding to the two voice coils 1 are opposite.

[0063] Reference Figure 2It is not difficult to see that in the first embodiment, the reinforcement part 31 extends along the arrangement direction of the two voice coils 1, so that the reinforcement part 31 spans over the two voice coils 1. The reinforcement part 31 spans over the two voice coils 1. When the two voice coils 1 pull the dome 3 against each other due to falling, the reinforcement part 31 can absorb the deformation of the dome 3 under the action of the two voice coils 1 and release the stress of the dome 3, thereby preventing the dome 3 from collapsing, deforming, or breaking under the pulling action of the voice coils 1.

[0064] In other preferred embodiments of the present invention, a reinforcement portion 31 extending along the length direction of the contact position 2 may be further provided on the dome 3 to increase the overlapping area between the reinforcement portion 31 and the contact position 2 in the vertical direction, thereby further improving the anti-drop performance of the sound unit.

[0065] like Figure 5 As shown, in the first embodiment, the position of the ball top 3 at the top of the contact position 2 is recessed downward to form a reinforcement portion 31, that is, the reinforcement portion 31 is a concave platform structure on the ball top 3, and the reinforcement plate 4 is arranged on the side of the reinforcement portion 31 away from the contact position 2.

[0066] Please refer to Figure 3 In the first embodiment, two center washers 5 are respectively provided for the two voice coils 1 of the sound unit, wherein a side of the center washers 5 close to the dome 3 is provided with an avoidance groove 51, and the avoidance groove 51 is arranged corresponding to the position of the reinforcement part 31, and the avoidance groove 51 can prevent the center washers 5 from colliding with the reinforcement part 31, thereby improving the anti-drop reliability of the sound unit. In addition, the reinforcement part 31 is bonded to the contact position 2, and glue overflow is easy to occur during bonding. In order to prevent the glue overflow from flowing onto the center washers 5, a glue overflow port 52 is also provided on the center washers 5.

[0067] Please refer to Figure 2 In the first embodiment, the sound unit further includes a centering support 6, wherein the centering support 6 is disposed on the basin frame 10, and the centering support 6 is electrically connected to the voice coil 1. Specifically, the voice coil 1 is connected to the external power supply through the centering support 6. The centering support 6 may be ring-shaped, so as to surround the two voice coils 1, or may be two or four centering support 6 monomers disposed around the two voice coils 1.

[0068] In the first embodiment, a vibration membrane 32 is further included, and the vibration membrane 32 is connected to the ball top 33; in addition, the ball top 33 can be a single-layer structure or a multi-layer structure, and the ball top 33 can be made of metal material or non-metal material.

[0069] In the first embodiment, the magnetic steel assembly includes two central magnetic steels 7 and two side magnetic steels 8 , wherein the two central magnetic steels 7 are respectively disposed at the bottom of the two central washers 5 , and the two side magnetic steels 8 are respectively disposed at the sides of the two central magnetic steels 7 .

[0070] Embodiment 2

[0071] Please refer to Figure 6 The second embodiment of the utility model is an improvement on the reinforcing portion 31 based on the first embodiment. The only difference between the second embodiment and the first embodiment is that the position of the ball top 3 located at the top of the contact position 2 protrudes upward to form the reinforcing portion 31, that is, the reinforcing portion 31 is a boss structure on the ball top 3, and the reinforcing plate 4 is arranged on the side of the reinforcing portion 31 close to the contact position 2.

[0072] Embodiment 3

[0073] Please refer to Figure 7 The third embodiment of the utility model is an improvement on the reinforcing portion 31 based on the first embodiment. The only difference between the third embodiment and the first embodiment is that the reinforcing portion 31 is a groove arranged on the upper surface of the dome 3, and the reinforcing plate 4 is arranged in the groove. The reinforcing portion 31 is thin, and the reinforcing plate 4 can improve the structural rigidity of the reinforcing portion 31 to prevent the reinforcing portion 31 from collapsing, deforming, and breaking during the falling process.

[0074] In summary, the spherical top 3 of the sound unit provided by the utility model is provided with a reinforcement portion 31, and a reinforcing plate 4 is provided on the reinforcement portion 31. The reinforcement portion 31 and the reinforcing plate 4 can improve the structural strength of the spherical top 3 of the sound unit to prevent the spherical top 3 from collapsing, deforming or breaking when the sound unit falls. The sound unit has high falling reliability.

[0075] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A sound unit, characterized in that: include: At least two voice coils, wherein at least two of the voice coils are arranged side by side in sequence, and two adjacent voice coils are in contact with each other, so that there is a contact position between the two adjacent voice coils; A dome, the dome being disposed on top of at least two of the voice coils, and the dome being provided with a reinforcement portion corresponding to the contact position; A reinforcing plate is arranged on the reinforcing portion.

2. The sound generating unit according to claim 1, characterized in that: The dome is recessed downward corresponding to the contact position to form the reinforcement portion.

3. The sound generating unit according to claim 2, characterized in that: The reinforcing plate is arranged on a side of the reinforcing portion away from the contact position.

4. The sound generating unit according to claim 1, characterized in that: The dome protrudes upward corresponding to the contact position to form the reinforcement portion.

5. The sound generating unit according to claim 4, characterized in that: The reinforcing plate is arranged on a side of the reinforcing portion close to the contact position.

6. The sound generating unit according to claim 1, characterized in that: The reinforcement portion is a groove arranged on the upper surface or the lower surface of the dome, and the reinforcement plate is arranged in the groove.

7. The sound generating unit according to claim 1, characterized in that: It also includes at least two center washers corresponding to at least two voice coils one by one, wherein the center washers are arranged in the voice coils, and a side of the center washers close to the dome is provided with an avoidance groove corresponding to the reinforcement part.

8. The sound generating unit according to claim 7, characterized in that: The reinforcing portion is bonded to the contact position, and a glue overflow port is provided on the center washer.

9. The sound generating unit according to claim 1, characterized in that: At least two of the voice coils are arranged side by side along the width direction of the sound generating unit, and the long sides of two adjacent voice coils are in contact with each other.

10. The sound generating unit according to claim 1, characterized in that: The reinforcement portion extends along an arrangement direction of two adjacent voice coils, so that the reinforcement portion spans over the two adjacent voice coils.

Images