A multifunctional sound-generating device

Abstract

The present invention provides a multifunctional sound-producing device, comprising a housing having a receiving space and a sound-producing unit suspended within the receiving space. The sound-producing unit comprises a frame, a vibration system fixed within the frame, and a magnetic circuit system that drives the vibration system to vibrate in a first direction to produce sound. The magnetic circuit system comprises a main magnetic steel assembly fixed within the frame and having a receiving cavity, and a secondary magnetic steel arranged around the main magnetic steel assembly to form a magnetic gap. The multifunctional sound-producing device also comprises a coil fixed within the housing and located within the receiving cavity. The main magnetic steel assembly, driven by the coil, can drive the sound-producing unit to vibrate in a second direction, the second direction being perpendicular to the first direction. The sound-producing unit of the present invention is a vibrator of a motor, the coil is a motor stator, and the magnetic circuit system can drive the vibration system to vibrate in the first direction to produce sound, thereby realizing the sound-producing function of a speaker. This allows the motor and the speaker to share a single magnetic circuit system, resulting in simple assembly, lower cost, and greater space saving for the entire device.

Description

Technical field

[0001] The present invention relates to the technical field of electronic equipment, and in particular to a multifunctional sound-generating device. [Background Technology]

[0002] Electronic devices generally interact with users through sound playback and / or vibration sensing.

[0003] In the related art, the sound playback and vibration sensation of the electronic device are respectively achieved through a speaker and a motor, and the speaker and the motor are independent devices, which makes the overall assembly of the electronic device complicated and occupies more internal space of the electronic device.

[0004] Therefore, it is necessary to provide a new multifunctional sound-producing device. [Summary of the invention]

[0005] The object of the present invention is to provide a multifunctional sound-generating device that can at least to some extent solve the deficiencies in the related art.

[0006] The technical solutions of the present invention are as follows:

[0007] A multifunctional sound-producing device includes a shell having a receiving space and a sound-producing unit suspended in the receiving space, the sound-producing unit includes a basin, a vibration system fixed in the basin, and a magnetic circuit system that drives the vibration system to vibrate along a first direction to produce sound, the magnetic circuit system includes a main magnetic steel assembly fixed in the basin and having a receiving cavity, and a secondary magnetic steel arranged around the main magnetic steel assembly to form a magnetic gap, the multifunctional sound-producing device also includes a coil fixed to the shell and located in the receiving cavity, and the main magnetic steel assembly can drive the sound-producing unit to vibrate along a second direction under the drive of the coil, and the second direction is perpendicular to the first direction.

[0008] Preferably, the magnetic circuit system also includes a first pole core fixed in the basin frame, the first pole core is provided with a clearance groove arranged opposite to the accommodating cavity, the first pole core and the vibration system are respectively located on opposite sides of the basin frame, the main magnetic steel assembly is respectively fixedly connected to the first pole core and the vibration system, and the auxiliary magnetic steel is fixed to the first pole core.

[0009] Preferably, the main magnetic steel assembly includes a first magnetic ring fixed to the first pole core, a second pole core fixedly connected to the first magnetic ring, a second magnetic ring fixedly connected to the second pole core, and a magnetic bowl fixedly connected to the second magnetic ring and the vibration system, respectively. The second pole core is arranged in a ring shape, and the first magnetic ring, the second pole core, and the inner cavity of the second magnetic ring together form the accommodating cavity.

[0010] Preferably, the multifunctional sound-generating device also includes an iron core fixed to the shell and located in the accommodating cavity, and the coil sleeve is fixed on the outside of the iron core; the magnetization direction of the first magnetic ring is toward the first pole core, the magnetization directions of the second magnetic ring and the auxiliary magnet are both toward the vibration system, the magnetization directions of both ends of the magnetic bowl are both toward the vibration system, and the magnetization direction of the middle area of ​​the magnetic bowl is toward the first pole core.

[0011] Preferably, the main magnetic steel assembly also includes a magnet accommodated in the accommodating cavity and with both ends respectively fixed to the inner side of the first magnetic ring, and the coil is sleeved on the outer side of the magnet; the magnet is magnetized from both ends toward the middle, the magnetization direction of the first magnetic ring is toward the first pole core, and the magnetization directions of the second magnetic ring, the magnetic bowl and the auxiliary magnetic steel are all toward the vibration system.

[0012] Preferably, the main magnetic steel assembly includes a first magnetic ring fixed to the first pole core, a magnetic bowl fixedly connected to the vibration system and the first magnetic ring, respectively, and two second pole cores accommodated in the accommodating cavity and fixed to the first pole core, and the two second pole cores extend along the edge of the clearance slot toward the vibration system.

[0013] Preferably, the multifunctional sound-generating device also includes an iron core fixed to the shell and located in the accommodating cavity, and the coil sleeve is fixed to the outside of the iron core; the first magnetic ring is relatively arranged in the magnetization direction on both sides of the coil axis, and the magnetization direction of the auxiliary magnet on one side of the two sides of the coil axis is toward the first pole core, and the other side is toward the vibration system.

[0014] Preferably, the basin frame includes a main frame elastically connected to the shell, an enclosing frame fixedly connected to the side of the main frame away from the shell, and an upper cover fixed to the side of the enclosing frame away from the main frame, the first pole core is fixed to the main frame, and the vibration system is connected to the upper cover.

[0015] Preferably, the enclosing frame is provided with a notch, and the multifunctional sound-generating device further comprises an elastic member fixedly connected to the main frame and the shell, respectively, and located in the notch.

[0016] Preferably, the vibration system includes a diaphragm fixedly connected to the basin frame and the main magnetic steel assembly, respectively, and a sealing ring is connected between the diaphragm and the main magnetic steel assembly; the sound unit also includes a voice coil connected to the diaphragm and located in the magnetic gap, and the voice coil is used to drive the diaphragm to vibrate along the first direction.

[0017] The beneficial effect of the present invention is that: since the sound-producing unit is the vibrator of the motor, the coil is the stator of the motor, and the magnetic circuit system can drive the vibration system to vibrate and produce sound along the first direction, thereby realizing the sound-producing function of the speaker, the motor and the speaker share a set of magnetic circuit systems, which is simple to assemble, lower in cost, and saves more space in the entire machine.

Brief Description of the Drawings

[0018] Figure 1 is a top view of a multifunctional sound-generating device according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A cross-sectional view taken along the AA direction of the main magnetic steel assembly, which is composed of a first magnetic ring, a second pole core, a second magnetic ring, and a magnetic bowl;

[0020] Figure 3 This is an exploded view of the main magnetic steel assembly in the multifunctional sound-generating device according to an embodiment of the present invention, which is composed of a first magnetic ring, a second pole core, a second magnetic ring, and a magnetic bowl;

[0021] Figure 4 yes Figure 1 A cross-sectional view taken along the AA direction of the main magnetic steel assembly, which is composed of a first magnetic ring, a second pole core, a second magnetic ring, a magnetic bowl, and a magnet;

[0022] Figure 5 This is an exploded view of the main magnetic steel assembly in the multifunctional sound-generating device according to an embodiment of the present invention, which is composed of a first magnetic ring, a second pole core, a second magnetic ring, a magnetic bowl, and a magnet;

[0023] Figure 6 yes Figure 1 A cross-sectional view taken along the AA direction of the main magnetic steel assembly, which is composed of a first magnetic ring, a second pole core, and a magnetic bowl;

[0024] Figure 7 This is an exploded view of the main magnetic steel assembly in the multifunctional sound-generating device according to an embodiment of the present invention, which is composed of a first magnetic ring, a second pole core, and a magnetic bowl;

[0025] Figure 8 It is an exploded view of the basin frame in the multifunctional sound-generating device according to an embodiment of the present invention. [Specific implementation method]

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See also Figures 1 to 8An embodiment of the present invention provides a multifunctional sound-emitting device, including a shell 1 having a receiving space 11 and a sound-emitting unit 2 suspended in the receiving space 11, the sound-emitting unit 2 including a basin 21, a vibration system 22 fixed in the basin 21, and a magnetic circuit system 23 for driving the vibration system 22 to vibrate along a first direction to produce sound, the magnetic circuit system 23 including a main magnetic steel assembly 231 fixed in the basin 21 and having a receiving cavity 2315, and a secondary magnetic steel 232 arranged around the main magnetic steel assembly 231 to form a magnetic gap, the multifunctional sound-emitting device also includes a coil 3 fixed in the shell 1 and located in the receiving cavity 2315, the main magnetic steel assembly 231 can drive the sound-emitting unit 2 to vibrate along a second direction under the drive of the coil 3, and the second direction is perpendicular to the first direction.

[0028] It should be understood that when the main magnetic steel assembly 231 in the magnetic circuit system 23 drives the sound-emitting unit 2 to vibrate along the second direction under the drive of the coil 3, the sound-emitting unit 2 is the vibrator of the motor, the coil 3 is the stator of the motor, and the magnetic circuit system 23 can drive the vibration system 22 to vibrate and make sound along the first direction, thereby realizing the sound-emitting function of the speaker, so that the motor and the speaker share a set of magnetic circuit systems 23, which is simple to assemble, lower cost, and saves more space in the entire machine.

[0029] See also Figures 1 to 5 Furthermore, the magnetic circuit system 23 also includes a first pole core 233 fixed within the frame 21. The first pole core 233 defines a clearance slot 2331 that is positioned opposite the accommodating cavity 2315. The first pole core 233 and the vibration system 22 are located on opposite sides of the frame 21, respectively. The main magnetic steel assembly 231 is fixedly connected to the first pole core 233 and the vibration system 22, respectively, and the secondary magnetic steel 232 is fixed to the first pole core 233. Specifically, the first pole core 233 may be a flat plate, with one side of the first pole core 233 contacting the housing 1 and the other side being fixed with the main magnetic steel assembly 231 and the secondary magnetic steel 232. The first pole core 233 defines a clearance slot 2331 that is positioned opposite the accommodating cavity 2315 to ensure that the first pole core 233 does not interfere with the fixation between the coil 3 and the housing 1. Furthermore, this prevents the first pole core 233 from colliding with the coil 3 when the sound source unit 2 moves in the second direction.

[0030] In an embodiment of the present invention, the first direction can be the Z direction, and the second direction can be the X direction; there are multiple magnetization methods for the main magnetic steel assembly 231 and the auxiliary magnetic steel 232, so that the magnetic field strength generated by the magnetic circuit system 23 is different, thereby generating driving forces of different sizes, which is convenient for adjusting the vibration effect of the vibration system 22 along the first direction and the vibration effect of the sound unit 2 along the second direction.

[0031] See also Figure 1 、 Figure 2 as well as Figure 3In some embodiments, the main magnetic steel assembly 231 includes a first magnetic ring 2311 fixed to the first pole core 233, a second pole core 2312 fixedly connected to the first magnetic ring 2311, a second magnetic ring 2313 fixedly connected to the second pole core 2312, and a magnetic bowl 2314 fixedly connected to the second magnetic ring 2313 and the vibration system 22, respectively. The second pole core 2312 is arranged in a ring shape, and the inner cavities of the first magnetic ring 2311, the second pole core 2312, and the second magnetic ring 2313 jointly form a accommodating cavity 2315. Specifically, the height of the first magnetic ring 2311 is equal to the height of the secondary magnetic steel 232, that is, a magnetic gap is provided between the first magnetic ring 2311 and the secondary magnetic steel 232; the thickness of the first magnetic ring 2311 is greater than the thickness of the second magnetic ring 2313, and the thickness of the second magnetic ring 2313 is less than the thickness of the magnetic bowl 2314, which helps reduce the material consumption in manufacturing the main magnetic steel assembly 231, thereby reducing costs; the magnetic bowl 2314 covers and seals the inner cavity of the second magnetic ring 2313, ensuring the sealing of the sound unit 2, thereby improving the sound effect of the sound unit 2. If practical, the cross-sectional dimensions of the inner cavity of the first magnetic ring 2311, the inner cavity of the second pole core 2312, and the inner cavity of the second magnetic ring 2313 are equal, which helps ensure the symmetrical arrangement of the main magnetic steel assembly 231.

[0032] See also Figure 2 and Figure 3 ( Figure 2 (The arrow in the figure indicates the magnetization direction). In one embodiment, the multifunctional sound-generating device further includes an iron core 4 fixed to the housing 1 and positioned within the accommodating cavity 2315, with the coil 3 being sleeved and fixed outside the iron core 4. The magnetization direction of the first magnetic ring 2311 is toward the first pole core 233, the magnetization directions of the second magnetic ring 2313 and the auxiliary magnet 232 are both toward the vibration system 22, the magnetization directions of both ends of the magnetic bowl 2314 are both toward the vibration system 22, and the magnetization direction of the central region of the magnetic bowl 2314 is toward the first pole core 233. Specifically, one end of the iron core 4 passes through the clearance slot 2331 of the first pole core 233 and is fixed to the housing 1, while the other end extends into the accommodating cavity 2315. The axis of the coil 3 extends parallel to the length extension line of the magnetic bowl 2314, which facilitates the coil 3 providing the driving force to drive the sound unit 2 in the second direction. It should be understood that in this embodiment, the iron core 4 and the coil 3 together serve as the motor stator.

[0033] See also Figure 4 as well as Figure 5 ( Figure 4The direction of the arrow in the figure is the magnetization direction). In one embodiment, the main magnetic steel assembly 231 also includes a magnet 2316 accommodated in the accommodating cavity 2315 and fixed at both ends to the inner side of the first magnetic ring 2311, and the coil 3 is sleeved on the outer side of the magnet 2316; the magnet 2316 is magnetized from both ends toward the middle, the magnetization direction of the first magnetic ring 2311 is toward the first pole core 233, and the magnetization directions of the second magnetic ring 2313, the magnetic bowl 2314 and the auxiliary magnet 232 are all toward the vibration system 22. Specifically, the magnet 2316 can be cylindrical, and the magnet 2316 is a same-level relative magnet. One side of the coil 3 passes through the clearance slot 2331 of the first pole core 233 and contacts the shell 1. At this time, the coil 3 and the shell 1 can be fixed by gluing. It should be understood that in this embodiment, only the coil 3 serves as the stator of the motor.

[0034] See also Figure 1 、 Figure 6 as well as Figure 7 In one embodiment, the main magnetic steel assembly 231 includes a first magnetic ring 2311 fixed to the first pole core 233, a magnetic bowl 2314 fixedly connected to the vibration system 22 and the first magnetic ring 2311, and two second pole cores 2312 accommodated in the accommodating cavity 2315 and fixed to the first pole core 233. The inner cavity of the first magnetic ring 2311 forms the accommodating cavity 2315, and the two second pole cores 2312 are distributed at opposite ends of the first magnetic ring 2311, and the second pole cores 2312 are located in the extension direction of the axis of the coil 3. Specifically, a magnetic gap is formed between the first magnetic ring 2311 and the secondary magnet 232. The height of the first magnetic ring 2311 is higher than the height of the secondary magnet 232, and the thickness of the first magnetic ring 2311 is greater than the thickness of the magnetic bowl 2314. Compared with other embodiments in which the main magnetic steel assembly 231 is provided with multiple magnetic rings and multiple pole cores, the main magnetic steel assembly 231 in this embodiment is only provided with one magnetic ring, which simplifies the assembly process of the main magnetic steel assembly 231 and reduces the manufacturing cost of the main magnetic steel assembly 231. The magnetic bowl 2314 covers and seals the inner cavity of the first magnetic ring 2311 to ensure the sealing of the sound unit 2, thereby improving the sound effect of the sound unit 2.

[0035] See also Figure 6 and Figure 7 ( Figure 6 The arrow in the figure is the magnetizing direction). Furthermore, the multifunctional sound-generating device further includes an iron core 4 fixed to the housing 1 and located within the accommodating cavity 2315, and the coil 3 is sleeved and fixed on the outside of the iron core 4; the first magnetic ring 2311 is arranged in opposite directions with respect to the magnetizing directions on opposite sides of the axis of the coil 3, and the secondary magnetic steel 232 is arranged with respect to the first pole core 233 on one side of the opposite sides of the axis of the coil 3, and with respect to the vibration system 22 on the other side. It should be understood that the arrangement of the iron core 4 and the coil 3 in this embodiment is the same as that of the iron core 4 and the coil 3 in the aforementioned embodiment, and will not be discussed here.

[0036] See also Figure 2 and Figure 8 In one embodiment, the basin frame 21 includes a main frame 211 elastically connected to the shell 1, an enclosing frame 212 fixedly connected to the side of the main frame 211 away from the shell 1, and an upper cover 213 fixed to the side of the enclosing frame 212 away from the main frame 211. The first pole core 233 is fixed to the main frame 211, and the vibration system 22 is connected to the upper cover 213. Specifically, the main frame 211 is provided with an installation slot, the first pole core 233 is fixed in the installation slot, and the enclosing frame 212 is used to enclose and seal the main frame 211, so that a sealed space is formed between the vibration system 22, the main magnetic steel assembly 231 and the basin frame 21, which is conducive to improving the sound effect of the sound unit 2; the two ends of the main frame 211 are elastically connected to the shell 1 respectively, so that the sound unit 2 can vibrate back and forth along the second direction.

[0037] See also Figure 2 and Figure 8 Furthermore, the enclosing frame 212 is provided with a notch, and the multifunctional sound-generating device further includes an elastic member 5 fixedly connected to the main frame 211 and the housing 1, respectively, and located within the notch. Specifically, the enclosing frame 212 is provided with two notches, and two elastic members 5 are provided, and the two elastic members 5 are arranged in the direction of the axis extension of the coil 3. The notch of the enclosing frame 212 can provide sufficient elastic deformation space for the elastic member 5, thereby increasing the vibration intensity of the sound-generating unit 2 along the second direction.

[0038] See also Figure 2 、 Figure 4 as well as Figure 6 , wherein the elastic member 5 is U-shaped and includes a first connecting arm fixedly connected to the main frame 211, a second connecting arm fixedly connected to the shell 1, and an elastic portion fixedly connected to the first connecting arm and the second connecting arm, respectively, with a gap between the first connecting arm and the second connecting arm. When the main magnetic steel assembly 231 drives the sound unit 2 to move in the second direction, the first connecting arm moves toward the second connecting arm, and the gap between the first connecting arm and the second connecting arm becomes smaller; when the elastic member 5 drives the sound unit 2 to recover, the first connecting arm moves away from the second connecting arm, and the gap between the first connecting arm and the second connecting arm becomes larger. Preferably, gaskets are fixed on the opposite sides of the first connecting arm and the second connecting arm, and the gaskets can buffer the collision between the first connecting arm and the second connecting arm, thereby preventing the elastic member 5 from being damaged by the collision between the first connecting arm and the second connecting arm. According to actual needs, the elastic member 5 can also be V-shaped or compression spring-shaped, and the gasket can be made of elastic materials such as foam, rubber, and silicone.

[0039] See also Figure 1 、 Figure 2 as well as Figure 3In one embodiment, the vibration system 22 includes a diaphragm 221 fixedly connected to the frame 21 and the main magnetic steel assembly 231, respectively, with a sealing ring 24 connected between the diaphragm 221 and the main magnetic steel assembly 231. The sound unit 2 also includes a voice coil 25 connected to the diaphragm 221 and located within the magnetic gap. The voice coil 25 is used to drive the diaphragm 221 to vibrate in a first direction. Specifically, the diaphragm 221 includes an outer fold fixedly connected to the upper cover 213, a dome connected to the outer fold, and an inner fold connected to the dome and the magnetic bowl 2314. The voice coil 25 is connected to the dome, and the sealing ring 24 is disposed between the inner fold and the magnetic bowl 2314 to ensure a sealed connection between the diaphragm 221 and the main magnetic steel assembly 231. When the magnetic circuit system 23 drives the voice coil 25 to vibrate, the voice coil 25 drives the dome, inner fold, and outer fold to vibrate, thereby causing the diaphragm 221 to vibrate and produce sound.

[0040] The above description is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the creative concept of the present invention, but these improvements all fall within the scope of protection of the present invention.

Claims

1. A multifunctional sound-generating device, characterized in that: It includes a shell with a receiving space and a sound-emitting unit suspended in the receiving space, the sound-emitting unit includes a basin, a vibration system fixed in the basin, and a magnetic circuit system that drives the vibration system to vibrate along a first direction to produce sound, the magnetic circuit system includes a main magnetic steel assembly fixed in the basin and having a receiving cavity, and a secondary magnetic steel arranged around the main magnetic steel assembly to form a magnetic gap, the multifunctional sound-emitting device also includes a coil fixed to the shell and located in the receiving cavity, and the main magnetic steel assembly can drive the sound-emitting unit to vibrate along a second direction under the drive of the coil, and the second direction is perpendicular to the first direction.

2. The multifunctional sound-generating device according to claim 1, characterized in that: The magnetic circuit system also includes a first pole core fixed in the basin frame, the first pole core is provided with a clearance groove arranged opposite to the accommodating cavity, the first pole core and the vibration system are respectively located on opposite sides of the basin frame, the main magnetic steel assembly is respectively fixedly connected to the first pole core and the vibration system, and the auxiliary magnetic steel is fixed to the first pole core.

3. The multifunctional sound-generating device according to claim 2, characterized in that: The main magnetic steel assembly includes a first magnetic ring fixed to the first pole core, a second pole core fixedly connected to the first magnetic ring, a second magnetic ring fixedly connected to the second pole core, and a magnetic bowl fixedly connected to the second magnetic ring and the vibration system, respectively. The second pole core is arranged in a ring shape, and the first magnetic ring, the second pole core, and the inner cavity of the second magnetic ring together form the accommodating cavity.

4. The multifunctional sound-generating device according to claim 3, characterized in that: The multifunctional sound-generating device also includes an iron core fixed to the shell and located in the accommodating cavity, and the coil sleeve is fixed on the outside of the iron core; the magnetization direction of the first magnetic ring is toward the first pole core, the magnetization directions of the second magnetic ring and the auxiliary magnet are both toward the vibration system, the magnetization directions of both ends of the magnetic bowl are both toward the vibration system, and the magnetization direction of the middle area of ​​the magnetic bowl is toward the first pole core.

5. The multifunctional sound-generating device according to claim 3, characterized in that: The main magnetic steel assembly also includes a magnet accommodated in the accommodating cavity and fixed at both ends to the inner side of the first magnetic ring, and the coil is arranged on the outer side of the magnet; the magnet is magnetized from both ends toward the middle, the magnetization direction of the first magnetic ring is toward the first pole core, and the magnetization directions of the second magnetic ring, the magnetic bowl and the auxiliary magnetic steel are all toward the vibration system.

6. The multifunctional sound-generating device according to claim 2, characterized in that: The main magnetic steel assembly includes a first magnetic ring fixed to the first pole core, a magnetic bowl fixedly connected to the vibration system and the first magnetic ring respectively, and two second pole cores accommodated in the accommodating cavity and fixed to the first pole core, and the two second pole cores extend along the edge of the clearance slot toward the vibration system.

7. The multifunctional sound-generating device according to claim 6, characterized in that: The multifunctional sound-generating device also includes an iron core fixed to the shell and located in the accommodating cavity, and the coil sleeve is fixed on the outside of the iron core; the first magnetic ring is relatively arranged in the magnetization direction on the two opposite sides of the coil axis, and the magnetization direction of the auxiliary magnet on one side of the two opposite sides of the coil axis is toward the first pole core, and the other side is toward the vibration system.

8. The multifunctional sound-generating device according to claim 2, characterized in that: The basin frame includes a main frame elastically connected to the shell, an enclosing frame fixedly connected to the side of the main frame away from the shell, and an upper cover fixed to the side of the enclosing frame away from the main frame. The first pole core is fixed to the main frame, and the vibration system is connected to the upper cover.

9. The multifunctional sound-generating device according to claim 8, characterized in that: The enclosing frame is provided with a notch, and the multifunctional sound-generating device further comprises an elastic member which is respectively fixedly connected to the main frame and the shell and is located in the notch.

10. The multifunctional sound-generating device according to claim 1, characterized in that: The vibration system includes a diaphragm fixedly connected to the basin frame and the main magnetic steel assembly, and a sealing ring is connected between the diaphragm and the main magnetic steel assembly; the sound unit also includes a voice coil connected to the diaphragm and located in the magnetic gap, and the voice coil is used to drive the diaphragm to vibrate along the first direction.

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