Sound production unit

Abstract

The utility model discloses a sound production unit, comprising at least two voice coils which are arranged side by side in sequence, and two adjacent voice coils are in contact with each other; and the ball top is arranged at the tops of the at least two voice coils, and the ball top is provided with a first reinforcing part corresponding to the contact position of the two adjacent voice coils. According to the utility model, the structural strength of the contact position between the two corresponding adjacent voice coils can be enhanced through the first enhancement part, so that the situation that the ball top is damaged due to the fact that the ball top is pulled by the two voice coils when the sound production unit falls off is avoided.

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 also put forward higher and higher requirements in terms of performance and size. Existing sound units improve the sound effect of the sound unit by increasing the number of voice coils. 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 separately, and the dome is prone to collapse, deformation, and fracture, thus causing damage to the sound unit. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sound generating unit to solve the problem that the existing sound generating unit with multiple voice coils has poor anti-drop performance.

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

[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 is provided on the top of at least two of the voice coils, and a first reinforcement portion is provided on the dome corresponding to the contact position.

[0007] Further, the first reinforcement portion is a protrusion of the dome protruding toward the contact position or away from the contact position; or, the first reinforcement portion is an inwardly recessed groove provided on a side surface of the dome close to the contact position or on another side surface away from the contact position.

[0008] Furthermore, the first reinforcement portion extends along the arrangement direction of the two adjacent voice coils, so that the first reinforcement portion spans over the two adjacent voice coils.

[0009] Furthermore, the ball top is provided with a second reinforcement portion corresponding to the contact position, and the extension direction of the second reinforcement portion is perpendicular to the extension direction of the first reinforcement portion; the second reinforcement portion is a concave platform, a convex platform or a pressed groove.

[0010] 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 first reinforcement part.

[0011] Furthermore, the first reinforcement portion is bonded to the contact position, and a glue overflow port is provided on the center washer.

[0012] Furthermore, it also includes at least two center magnetic steels corresponding to at least two of the voice coils, and the center magnetic steels are arranged in the voice coils.

[0013] 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.

[0014] Furthermore, it also includes a basin frame and a centering support plate, the voice coil is arranged in the basin frame, the centering support plate is arranged on the basin frame, and the centering support plate is electrically connected to the voice coil.

[0015] Furthermore, it also includes a diaphragm, and the diaphragm is connected to the dome.

[0016] The beneficial effect of the present invention is that a first reinforcement portion is provided at a contact position between two adjacent voice coils corresponding to the dome of the sound unit described in the present invention. When the sound unit falls, relative displacement occurs between the voice coils and a pulling effect is exerted on the dome. The first reinforcement portion can increase the structural strength of the dome, thereby preventing the dome from collapsing, deforming or breaking under the pulling effect. The sound unit described in the present invention has high anti-fall reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the sound-generating unit of the utility model in the first embodiment;

[0018] Figure 2 for Figure 1 Exploded diagram of the structure of the middle sound unit;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of the middle sound unit from another perspective;

[0020] Figure 4 for Figure 3 Middle AA section view;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure of part B in the middle is enlarged;

[0022] Figure 6 for Figure 4 AA section view from another perspective;

[0023] Figure 7 for Figure 1 Schematic diagram of the structure of the central center washer;

[0024] Figure 8 This is a schematic diagram of the structure of the sound-generating unit of the utility model in the second embodiment;

[0025] Fig. 9 It is an enlarged schematic diagram of the structure of part B of the sound-emitting unit in the third embodiment of the present utility model;

[0026] Fig.10 It is a schematic diagram of the enlarged structure of part B of the sound-emitting unit in the fourth embodiment of the present utility model.

[0027] Description of labels:

[0028] 1. Voice coil;

[0029] 2. dome; 21. first reinforcement portion; 22. second reinforcement portion;

[0030] 3. Center washer; 31. Avoidance groove; 32. Glue overflow port;

[0031] 4. Center magnet;

[0032] 5. Basin rack;

[0033] 6. Centering support piece;

[0034] 7. Edge magnetic steel;

[0035] 8. Magnetic cover;

[0036] 9. Contact position;

[0037] 10. Diaphragm. DETAILED DESCRIPTION

[0038] 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.

[0039] Please refer to Figures 1 to 10 , a sound unit, comprising:

[0040] 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 9 between the two adjacent voice coils 1;

[0041] The dome 2 is disposed on the top of at least two of the voice coils 1 , and the dome 2 is provided with a first reinforcement portion 21 corresponding to the contact position 9 .

[0042] From the above description, it can be seen that the beneficial effect of the utility model is that the dome 2 of the sound unit described in the utility model is provided with a first reinforcement part 21 corresponding to the contact position 9 between two adjacent voice coils 1. When the sound unit falls, relative displacement occurs between the voice coils 1 and a pulling effect is exerted on the dome 2. The first reinforcement part 21 can increase the structural strength of the dome 2, thereby preventing the dome 2 from collapsing, deforming or breaking under the pulling effect. The sound unit described in the utility model has high anti-fall reliability.

[0043] Further, the first reinforcement portion 21 is a protrusion of the ball top 2 protruding toward the contact position 9 or away from the contact position 9; or, the first reinforcement portion 21 is an inwardly recessed groove provided on a side surface of the ball top 2 close to the contact position 9 or on the other side surface away from the contact position 9.

[0044] It can be known from the above description that the first reinforcement portion 21 can be a convex platform, a concave platform or a concave groove arranged on the dome 2.

[0045] Furthermore, the first reinforcement portion 21 extends along the arrangement direction of the two adjacent voice coils 1 , so that the first reinforcement portion 21 spans over the two adjacent voice coils 1 .

[0046] From the above description, it can be seen that the first reinforcement part 21 spans over two adjacent voice coils 1. When the two adjacent voice coils 1 pull the dome 2 against each other due to falling, the first reinforcement part 21 can absorb the deformation of the dome 2 caused by the two voice coils 1 and release the stress of the dome 2, thereby preventing the dome 2 from collapsing, deforming or breaking under the pulling action of the voice coils 1.

[0047] Furthermore, the dome 2 is further provided with a second reinforcement portion 22 corresponding to the contact position 9, the extension direction of the second reinforcement portion 22 is perpendicular to the extension direction of the first reinforcement portion 21, and the second reinforcement portion 22 is a concave platform, a convex platform or a pressed groove.

[0048] It can be seen from the above description that the second reinforcement portion 22 is provided on the dome 2 , and the second reinforcement portion 22 extends along the length direction of the contact position 9 , which can further improve the structural strength of the dome 2 .

[0049] Furthermore, it also includes at least two center washers 3 corresponding to at least two of the voice coils 1 , the center washers 3 are arranged in the voice coils 1 , and a side of the center washers 3 close to the dome 2 is provided with an avoidance groove 31 corresponding to the first reinforcement part 21 .

[0050] It can be seen from the above description that when the sound unit falls, the avoidance groove 31 can prevent the central washer 3 from colliding with the first reinforcement part 21, thereby improving the anti-fall reliability of the sound unit.

[0051] Furthermore, the first reinforcement portion 21 is bonded to the contact position 9 , and a glue overflow port 32 is provided on the center washer 3 .

[0052] From the above description, it can be seen that glue may overflow when the voice coil 1 is bonded to the first reinforcement part 21, and a glue overflow port 32 is provided on the center washer 3 corresponding to the contact position 9, which can prevent the glue from overflowing onto the center washer 3 and affecting the sound effect of the sound unit.

[0053] Furthermore, it also includes at least two central magnetic steels 4 corresponding to at least two of the voice coils 1 , and the central magnetic steels 4 are arranged in the voice coils 1 .

[0054] In some preferred embodiments of the present invention, two side magnetic steels 7 are further included. The two side magnetic steels 7 are respectively arranged at the head and tail sides of at least two center magnetic steels 4 arranged in sequence.

[0055] 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.

[0056] 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 4 are arranged side by side, which can increase the aspect ratio of the center magnet 4, thereby improving the utilization efficiency of the center magnet 4 and increasing the magnetic induction density in the air gap of the sound-emitting unit.

[0057] Furthermore, it also includes a basin frame 5 and a centering support plate 6. The voice coil 1 is arranged in the basin frame 5, and the centering support plate 6 is arranged on the basin frame 5. The centering support plate 6 is electrically connected to the voice coil 1.

[0058] It can be known from the above description that the voice coil 1 can be connected to the external power supply through the centering support 6.

[0059] Furthermore, it also includes a diaphragm 10, and the diaphragm 10 is connected to the dome 2.

[0060] Embodiment 1

[0061] Please refer to Figures 1 to 7 The first embodiment of the utility model is to provide a sound unit, which includes: a dome 2, a magnetic steel assembly, a centering support plate 6, a basin frame 5, a magnetic cover 8, two voice coils 1 and two center washers 3 respectively corresponding to the two voice coils 1, the magnetic cover 8 is arranged at the bottom of the basin frame 5, and the magnetic cover 8 and the basin frame 5 are enclosed to form an assembly groove, and the assembly groove is sequentially arranged with a magnetic steel assembly, a center washer 3 and a voice coil 1 in the vertical direction upward.

[0062] Specifically, the two voice coils 1 are arranged side by side along the width direction of the sound unit, and the long sides of the two voice coils 1 are in contact with each other, so that there is a contact position 9 between the two voice coils 1. In addition, the current directions of the two voice coils 1 at the contact position 9 are opposite, and the polarities of the magnetic steels corresponding to the two voice coils 1 are opposite.

[0063] Please refer to Figure 1 and Figure 2 The dome 2 is arranged on the basin frame 5, and the dome 2 is located at the top of the voice coil 1. The dome 2 is provided with a first reinforcement portion 21 corresponding to the contact position 9. In the first embodiment, the first reinforcement portion 21 is a protrusion of the dome 2 protruding toward the contact position 9, that is, the first reinforcement portion 21 is a concave platform structure on the dome 2, and the concave platform extends along the arrangement direction of the two adjacent voice coils 1, that is, the concave platform spans the two adjacent voice coils 1. The first reinforcement portion 21 spans the two adjacent voice coils 1. When the two adjacent voice coils 1 pull the dome 2 against each other due to falling, the first reinforcement portion 21 can absorb the deformation of the dome 2 under the action of the two voice coils 1 and release the stress of the dome 2, thereby preventing the dome 2 from collapsing, deforming, and breaking under the pulling action of the voice coil 1.

[0064] In the first embodiment, the concave platform is bonded to the contact position 9, and glue may overflow when the voice coil 1 is bonded to the first reinforcement part 21. A glue overflow port 32 is provided on the center washer 3, which can prevent the glue from overflowing onto the center washer 3 and affecting the sound effect of the sound unit.

[0065] 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 5, 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.

[0066] Please refer to Figure 1 In the first embodiment, the magnetic steel assembly includes two central magnetic steels 4 and two side magnetic steels 7, wherein the two central magnetic steels 4 are respectively arranged at the bottom of the two central washers 3, and the two side magnetic steels 7 are respectively arranged at the sides of the two central magnetic steels.

[0067] In the first embodiment, a diaphragm 10 is also included. The diaphragm 10 is arranged around the outer contour of the dome 2, and the diaphragm 10 is connected to the dome 2. The dome 2 can be a single-layer structure or a multi-layer structure, and the dome 2 can be made of metal or non-metal material.

[0068] Embodiment 2

[0069] Please refer to Figure 8The second embodiment of the present invention further improves the dome 2 on the basis of the first embodiment. The only difference between the second embodiment and the first embodiment is that the dome 2 is further provided with a second reinforcement portion 22 corresponding to the contact position 9. The second reinforcement portion 22 extends along the length direction of the contact position 9. The second reinforcement portion 22 is a concave platform. The second reinforcement portion 22 can further improve the structural strength of the dome 2.

[0070] Embodiment 3

[0071] Please refer to Fig. 9 The third embodiment of the present invention further improves the first reinforcement portion 21 on the basis of the first embodiment. The only difference between the third embodiment and the first embodiment is that the first reinforcement portion 21 is a protrusion of the ball top 2 away from the contact position 9, that is, the first reinforcement portion 21 is a boss structure on the ball top 2.

[0072] Embodiment 4

[0073] Please refer to Fig.10 The fourth embodiment of the present invention further improves the first reinforcement portion 21 on the basis of the first embodiment. The only difference between the fourth embodiment and the first embodiment is that the first reinforcement portion 21 is provided with an inwardly recessed groove on the side surface of the dome 2 away from the contact position 9.

[0074] In summary, the dome 2 of the sound unit described in the utility model is provided with a first reinforcement portion 21 at the contact position 9 between two adjacent voice coils 1. When the sound unit falls, relative displacement occurs between the voice coils 1 and a pulling effect is exerted on the dome 2. The first reinforcement portion 21 can increase the structural strength of the dome 2, thereby preventing the dome 2 from collapsing, deforming or breaking under the pulling effect. The sound unit described in the utility model has high anti-fall 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 is provided on the top of at least two of the voice coils, and a first reinforcement portion is provided on the dome corresponding to the contact position.

2. The sound generating unit according to claim 1, characterized in that: The first reinforcement portion is a protrusion of the dome protruding toward the contact position or away from the contact position; or, the first reinforcement portion is an inwardly recessed groove provided on a side surface of the dome close to the contact position or on another side surface away from the contact position.

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

4. The sound generating unit according to claim 1, characterized in that: The dome is further provided with a second reinforcement portion corresponding to the contact position. The extension direction of the second reinforcement portion is perpendicular to the extension direction of the first reinforcement portion. The second reinforcement portion is a concave platform, a convex platform or a pressed groove.

5. 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, 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 first reinforcement part.

6. The sound generating unit according to claim 5, characterized in that: The first reinforcement portion is bonded to the contact position, and a glue overflow port is provided on the center washer.

7. The sound generating unit according to claim 1, characterized in that: It also includes at least two center magnetic steels corresponding to at least two of the voice coils, and the center magnetic steels are arranged in the voice coils.

8. 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.

9. The sound generating unit according to claim 1, characterized in that: It also includes a basin frame and a centering support plate. The voice coil is arranged in the basin frame, the centering support plate is arranged on the basin frame, and the centering support plate is electrically connected to the voice coil.

10. The sound generating unit according to claim 1, characterized in that: Also included is a diaphragm, which is connected to the dome.

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