Vibration sound generating unit and wearable device

Abstract

The application discloses a vibrating sound unit and wearable equipment, which comprises a shell, a vibrating diaphragm assembly and a vibrating device. The shell is provided with an inner cavity; the vibrating diaphragm assembly is arranged in the inner cavity and connected with the shell; the vibrating device comprises a framework provided with a receiving channel, an armature arranged in the framework and fixed opposite to the shell, two groups of magnet assemblies arranged in the receiving channel, an elastic member connected between the armature and the framework and a coil surrounding the outside of the armature, and the coil is located between the two groups of magnet assemblies; wherein the magnet assembly comprises two oppositely spaced magnets, the two magnets are arranged on both sides of the armature along the vibration direction, the two groups of magnet assemblies are magnetized along the vibration direction, and the magnetization directions are opposite; the coil is used for driving the framework to vibrate relative to the armature, the framework is connected with the vibrating diaphragm assembly and drives the vibrating diaphragm assembly to stimulate air sound. The vibrating sound unit can realize bone conduction sound transmission and air conduction sound transmission at the same time, has high driving efficiency and lower energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration sound production, and particularly relates to a vibration sound production unit and a wearable device. BACKGROUND

[0002] The vibration sound production unit generally transmits sound through air conduction or bone conduction. Air conduction produces sound by air driven by a diaphragm, and bone conduction transmits vibration to the skull to transmit sound through the skull.

[0003] In the prior art, the vibration sound production unit is generally implemented by a moving coil structure and a moving iron structure. In the moving coil structure, the coil of the vibration sound production unit is placed in a magnetic field formed by a magnet and a magnetic guide, the magnet and the magnetic guide are fixed, and the coil is suspended by a spring. After the coil is electrified, the coil vibrates along its own axis under the interaction force with the magnetic field. In the moving iron structure, a vibration assembly composed of a magnet and a magnetic guide of the vibration sound production unit is at least partially disposed in the coil, the coil is fixed, and the vibration assembly is suspended by a spring. After the coil is electrified, the vibration assembly vibrates along the axis of the coil under the magnetic force of the magnetic field generated by the coil.

[0004] The vibration sound production unit in the prior art has low transduction efficiency, resulting in high energy consumption. In order to achieve a certain sensitivity, a magnet with a large size is required to generate a strong enough magnetic field, resulting in a large volume of the vibrator as a whole, which is difficult to meet the demand for long endurance and miniaturization.

[0005] In addition, the vibration sound production unit in the prior art can generally only be used for air conduction or bone conduction, and cannot simultaneously realize air conduction and bone conduction, so it is difficult to be simultaneously applicable to the general public and people with hearing impairment, and the adaptability is poor.

[0006] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. SUMMARY

[0007] The present application aims to provide a vibration sound production unit and a wearable device, which can simultaneously realize bone conduction and air conduction, and has good transduction efficiency.

[0008] To achieve the above-mentioned application purposes, in one aspect, the present application provides a vibration sound production unit, comprising:

[0009] a shell provided with an inner cavity;

[0010] a diaphragm assembly disposed in the inner cavity and connected to the shell; and

[0011] The vibration device comprises a skeleton provided with a receiving channel, an armature fixed in the skeleton and opposite to the shell, two groups of magnet assemblies arranged in the receiving channel, an elastic member connected between the armature and the skeleton, and a coil surrounding the outside of the armature, the coil being located between the two groups of magnet assemblies.

[0012] The magnet assembly comprises two oppositely spaced magnets, the two magnets being arranged on both sides of the armature along the vibration direction, the two groups of magnet assemblies being magnetized along the vibration direction and having opposite magnetization directions.

[0013] The coil is used to drive the skeleton to vibrate relative to the armature, the skeleton being connected with the diaphragm assembly and driving the diaphragm assembly to vibrate air to produce sound.

[0014] Further, the two ends of the armature extend to the outside of the skeleton and are connected with the shell in a non-magnetic manner.

[0015] Further, the vibration sound unit comprises two groups of elastic members arranged along the length direction of the armature, each group of elastic members comprising at least one elastic member.

[0016] Further, the elastic member is made of a non-magnetic material and is formed by bending a spring sheet, comprising a first connecting portion connected with the skeleton, a second connecting portion connected with the armature, and an elastic portion connected between the first connecting portion and the second connecting portion, the number of the first connecting portions being two and located at the two ends of the elastic member.

[0017] Further, each group of elastic members comprises two elastic members arranged on both sides of the armature in the width direction or the thickness direction.

[0018] Further, the diaphragm assembly comprises a ring-shaped frame connected with the inner wall of the shell, a vibrating plate movably arranged in the ring-shaped frame, and a membrane connecting the ring-shaped frame and the vibrating plate, the skeleton driving the vibrating plate to vibrate when vibrating.

[0019] Further, at least one of the diaphragm assembly and the skeleton is provided with a protrusion protruding towards the other and connected with the other.

[0020] Further, the diaphragm assembly divides the inner cavity into a front cavity and a rear cavity, the shell being provided with a sound outlet hole communicating with the outside and the front cavity, and the vibration device being arranged in the rear cavity.

[0021] Further, the shell is made of a non-magnetic material, comprising a first shell and a second shell, at least one of the two surfaces of the first shell and the second shell is provided with two notches, and the two ends of the armature are respectively arranged in the two notches and clamped between the first shell and the second shell.

[0022] Further, the coil is relatively fixed with the skeleton, or the coil is relatively fixed with the armature.

[0023] Further, the skeleton and the armature are both made of soft magnetic material, and after the coil is energized, the part of the armature located in the two groups of magnet assemblies is polarized into two poles with opposite polarities, and a magnetic circuit is formed through the skeleton.

[0024] The two magnets of the magnet assembly are connected with the skeleton and form a magnetic circuit through the skeleton.

[0025] Further, the two magnets of the magnet assembly are both in the form of a plate and are arranged in parallel; the armature is also in the form of a plate and is arranged in parallel with the magnets, and the thickness direction of the armature is consistent with the vibration direction thereof.

[0026] On the other hand, the present application also provides a wearable device comprising the vibration sound unit according to any one of the above.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. In the present application, the vibration sound unit is provided with a vibration device and a diaphragm assembly. The vibration of the vibration device itself is transmitted to the shell through the armature, and then bone conduction sound transmission can be performed. At the same time, the vibration device also drives the diaphragm assembly to stimulate air, realizing air conduction sound transmission, having higher sensitivity and richer practical experience, and being able to meet the use of ordinary people and people with hearing impairment at the same time, and having wider application range. In addition, the overall size of the vibration sound unit is small, and has smaller cross section. The coil of the vibration device is wrapped around the outside of the armature, and the polarization efficiency of the armature is high. Through the mutual interaction of the two groups of magnet assemblies and the armature, the driving efficiency (transduction efficiency) is improved, the vibration sensitivity is higher, and the energy consumption is lower. Thus, the needs for endurance, miniaturization and performance diversification are better met.

[0029] 2. As an improvement, in the case where the coil is relatively fixed with the skeleton, the coil can move synchronously with the skeleton and the magnet assemblies, thereby increasing the mass of the vibration part, improving the vibration amount, and enhancing the vibration feeling.

[0030] 3. As an improvement, a notch for fixing the end of the armature is arranged on the first or second shell of the shell, and the armature is clamped between the two shells, so that the armature can be reliably fixed, and the armature is prevented from loosening or moving when vibrating, and the vibration of the skeleton can be reliably transmitted to the shell from the armature, and the efficiency of the vibration sound transmission is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of a vibrating sound unit of an embodiment of the present application.

[0032] Figure 2 is Figure 1 is an exploded view of the vibrating sound unit shown in

[0033] Figure 3 is Figure 1 is a sectional view of the vibrating sound unit shown in

[0034] Figure 4 is Figure 1 is a sectional view of the vibrating sound unit in another direction shown in

[0035] Figure 5 is Figure 3 is an enlarged view of the I part in

[0036] Figure 6 is a structural schematic diagram of a vibrating device in embodiment 1 of the present application.

[0037] Figure 7 is Figure 6 is an exploded view of the vibrating device shown in

[0038] Figure 8 is Figure 6 is a sectional view of the vibrating device shown in

[0039] Figure 9 is Figure 6 is a structural schematic diagram of the armature of the vibrating device shown in

[0040] Figure 10 is Figure 6 is a structural schematic diagram of the elastic member of the vibrating device shown in

[0041] Figure 11 is Figure 6 is a sectional view of the vibrating device in another direction shown in

[0042] Figure 12 is a structural schematic diagram of a vibrating device in embodiment 2 of the present application.

[0043] Figure 13 is Figure 12 is a sectional view of the vibrating device shown in

[0044] Figure 14 is a sectional view of the vibration device shown in FIG. 1. Figure 12 is a structural diagram of the elastic member of the vibration device shown in FIG. 1.

[0045] Figure 15 is a structural diagram of the vibration device in Embodiment 3 of the present application.

[0046] Figure 16 is a sectional view of the vibration device shown in FIG. 2. Figure 15 is a sectional view of the vibration device shown in FIG. 2.

[0047] Figure 17 is a structural diagram of the elastic member of the vibration device shown in FIG. 2. Figure 15

[0048] is a structural diagram of the vibration device in Embodiment 4 of the present application. Figure 18

[0049] is a sectional view of the vibration device shown in FIG. 3. Figure 19 Figure 18 is a sectional view of the vibration device shown in FIG. 3.

[0050] Figure 20 Figure 18 is a sectional view of the vibration device shown in FIG. 3.

[0051] Figure 21 is a structural diagram of the vibration device in Embodiment 5 of the present application.

[0052] Figure 22 is a structural diagram of the armature of the vibration device shown in FIG. 4. Figure 21

[0053] is a structural diagram of the armature of the vibration device shown in FIG. 4. Figure 23

[0054] is a structural diagram of the vibration device in Embodiment 6 of the present application. Figure 24 Figure 23 is a sectional view of the vibration device shown in FIG. 5.

[0055] Figure 25 Figure 23 is a structural diagram of the elastic member of the vibration device shown in FIG. 5.

[0056] Figure 26 is a structural diagram of the vibration device in Embodiment 7 of the present application.

[0057] Figure 27 is a sectional view of the vibration device shown in FIG. 6. Figure 26 DETAILED DESCRIPTION

[0058] ​​​​​In order to make the above objectives, characteristics and advantages of the present application more apparent, a detailed description of the specific embodiments of the present application will be given below with reference to the drawings. It should be understood that the specific embodiments described herein are merely intended to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings for the convenience of description. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0059] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to the process, method, product or device.

[0060] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It will be explicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0061] As shown in Figures 1 to 3 The vibration sound unit corresponding to a preferred embodiment of the present application includes a housing 80, a diaphragm assembly 81 and a vibration device 83.

[0062] The housing 80 is provided with an inner cavity, and the diaphragm assembly 81 and the vibration device 83 are arranged in the inner cavity. The structure of the housing 80 is not limited, and in the present embodiment, the housing 80 includes a first shell 800 and a second shell 801. Both the first shell 800 and the second shell 801 are shell-shaped structures with one end open, and the end faces of the open ends of the two shells are attached to each other to form an inner cavity for accommodating the diaphragm assembly 81 and the vibration device 83. The first shell 800 is located above the second shell 801, and the two shells are connected by, for example, adhesive connection, welding or the like.

[0063] The diaphragm assembly 81 is used to excite air to sound under the driving of the vibration device 83. Part of the diaphragm assembly 81 is fixedly connected with the housing 80, and part of the diaphragm assembly 81 is movable relative to the housing 80. The movable part of the diaphragm assembly 81 can excite air to sound when vibrating.

[0064] As a preferred embodiment, as shown in Figures 3 to 5As shown, the diaphragm assembly 81 comprises a ring-shaped frame 810 connected to the inner wall of the first housing 800, a vibrating plate 811 movably arranged in the ring-shaped frame 810, and a membrane 812 connecting the ring-shaped frame 810 and the vibrating plate 811. The membrane 812 is connected to the upper surface of the ring-shaped frame 810, and the vibrating plate 811 is connected to the upper surface of the membrane 812. The vibrating plate 811 is smaller in size than the ring-shaped frame 810, and has a gap with the ring-shaped frame 810. The membrane 812 covers the gap and forms an arched track in the area corresponding to the gap, so that the vibrating plate 811 can freely vibrate in the inner hole area of the ring-shaped frame 810, thereby driving the air to make sound.

[0065] As shown in the drawings, Figures 6 to 9 The vibrating device 83 comprises the skeleton 1, two sets of magnet assemblies, the armature 4, the elastic member 5, and the coil 6.

[0066] The skeleton 1 is provided with a receiving channel 10, and preferably, the skeleton 1 is tubular.

[0067] The two sets of magnet assemblies are arranged along the length direction of the armature 4, and each of the two sets of magnet assemblies comprises two oppositely arranged magnets. For the convenience of description, the two sets of magnet assemblies are referred to as the first magnet assembly 2 and the second magnet assembly 3.

[0068] The first magnet assembly 2 comprises two oppositely arranged first magnets 20, and each of the two first magnets 20 is arranged in the receiving channel 10 and is fixed to the skeleton 1, for example, by means of adhesion or welding. Figure 8 In the embodiment, the two first magnets 20 are both S-pole-up and N-pole-down.

[0069] The second magnet assembly 3 comprises two oppositely arranged second magnets 30, and each of the two second magnets 30 is arranged in the receiving channel 10 and is fixed to the skeleton 1, for example, by means of adhesion or welding. The two second magnets 30 are the same in magnetization direction. Figure 8 In the embodiment, the two second magnets 30 are both N-pole-up and S-pole-down.

[0070] The first magnet assembly 2 and the second magnet assembly 3 form a coaxial channel, and the armature 4 is arranged in the coaxial channel, i.e., the armature 4 is arranged between the two first magnets 20 and the two second magnets 30. The two first magnets 20 and the two second magnets 30 are arranged in the same direction, and specifically, the two first magnets 20 and the two second magnets 30 are arranged along the vibration direction, i.e., the direction in which the skeleton 1 vibrates relative to the armature 4. Figure 3The direction of the vibration axis 4a (in the case shown, the vertical direction) is set. As a preferred embodiment, the first magnet 20 and the second magnet 30 are both made of permanent magnetic material.

[0071] The armature 4 is arranged in the accommodating channel 10 and is fixed relative to the housing 80. As a preferred embodiment, the two ends of the armature 4 extend to the outside of the skeleton 1 and are connected to the housing 80, so as to realize the relative fixation of the armature 4 and the housing 80. The armature 4 is not in contact with the first magnet 20 and the second magnet 30, and has a spacing space 40 between the armature 4 and the first magnet 20 and the second magnet 30, so as to provide a space for the reciprocating movement of the whole of the skeleton 1 and the magnet assembly relative to the armature 4.

[0072] The elastic member 5 is used to realize the elastic connection between the armature 4 and the skeleton 1, and to drive the skeleton 1 to reset (return to the equilibrium state). Part of the elastic member 5 is connected to the armature 4, and part of the elastic member 5 is connected to the skeleton 1. The elastic member 5 enables the skeleton 1, which is sleeved outside the armature 4, to move relative to the armature 4 along the vibration direction. When the skeleton 1 moves relative to the armature 4, the elastic member 5 is elastically deformed, so as to provide an elastic force for driving the armature 4 to reset.

[0073] The coil 6 is used to polarize the armature 4, so that the whole of the skeleton 1 and the magnet assembly can vibrate relative to the armature 4. Specifically, the armature 4 is made of soft magnetic material. After the coil 6 is energized, the armature 4 can be polarized under the magnetic field of the coil 6. The polarized armature 4 interacts with the magnetic field of the first magnet assembly 2 and the second magnet assembly 3. In order to prevent the coil 6 from adversely affecting the polarization of the armature 4, the armature 4 and the housing 80 are non-magnetic conductive connection. For example, the housing 80 can be made of non-magnetic conductive material.

[0074] As shown in Figure 8 The coil 6 is located between the first magnet assembly 2 and the second magnet assembly 3, and surrounds the outside of the armature 4. The two ends of the armature 4 extend to the outside of the coil 6, and respectively extend into the two first magnets 20 and the two second magnets 30. When the coil 6 is energized, the part of the armature 4 located in the first magnet assembly 2 and the second magnet assembly 3 will be polarized into two poles (N-pole and S-pole) with opposite polarities, so as to move under the action of the magnetic field of the magnet. Specifically, referring to Figure 8When the left end of the armature 4 is polarized as N pole and the right end is polarized as S pole, the first magnet 20 and the second magnet 30 above the armature 4 are both opposite to the armature 4, and the armature 4 exerts magnetic repulsion on the two magnets, while the armature 4 exerts magnetic attraction on the first magnet 20 and the second magnet 30 below, so that the skeleton 1 as a whole is subjected to upward force and moves upward. Obviously, when the left end of the armature 4 is polarized as S pole and the right end is polarized as N pole, the two ends of the skeleton 1 will be subjected to downward magnetic force and move downward. By alternating the current direction (for example, alternating current) flowing into the coil 6, the polarity of the two ends of the armature 4 can be alternately changed, so that the skeleton 1 is subjected to alternating driving force and translates in the vibration direction relative to the armature 4.

[0075] When the skeleton 1 and the magnet assembly as a whole vibrate relative to the shell 80, the vibration is transmitted to the armature 4 through the elastic member 5 and then transmitted to the shell 80 through the armature 4, and the bone conduction sound transmission can be realized when the vibration is transmitted to the human body. Since the vibration mass of the skeleton 1 and the magnet assembly as a whole is large, a stronger vibration feeling can be generated, and thus high-quality bone conduction sound transmission can be realized.

[0076] In some embodiments, the coil 6 is connected to the armature 4, and the two are fixedly connected by, for example, gluing or welding. When the skeleton 1 and the magnet assembly vibrate, the coil 6 is fixed, and there is a gap between the coil 6 and the skeleton 1 and the magnet assembly, so that the skeleton 1 and the magnet assembly can vibrate freely. In other embodiments, the coil 6 is connected to the skeleton 1 and vibrates with the skeleton 1, so that the skeleton 1, the coil 6, and the two magnet assemblies vibrate simultaneously, the vibration mass is larger, and the vibration feeling is further enhanced.

[0077] In order to enable better transmission of vibration to the shell 80, stable connection between the armature 4 and the shell 80 is particularly important. As shown in Figure 2 In some embodiments, two notches 805 are provided on the surface of the second shell 801 connected to the first shell 800, and the two ends of the armature 4 are respectively arranged in the two notches 805 and clamped between the first shell 800 and the second shell 801. The armature 4 and the shell 80 can be fixedly connected by, for example, gluing or welding. By arranging the armature 4 in the notches 805, on the one hand, the position of the armature 4 can be positioned, and on the other hand, the stable connection between the armature 4 and the shell 80 can be ensured, so that the armature 4 will not be displaced and loosened during long-term vibration. It can be understood that the notches 805 can also be provided on the surface of the first shell 801 connected to the second shell 801.

[0078] Further, the skeleton 1 is connected with the vibrating plate 811, so that when the skeleton 1 vibrates, the vibrating plate 811 will be driven to vibrate, thereby urging the air to realize air conduction sound transmission. That is, the receiver can simultaneously propagate sound through bone conduction and air conduction, obtain higher sensitivity, and meet the needs of both normal hearing people and people with damaged eardrums.

[0079] As a preferred embodiment, as shown in Figure 3 and Figure 4 , the diaphragm assembly 81 is provided with a protrusion 814 protruding downward, which is connected with the upper surface 101 of the skeleton 1. Specifically, the vibrating plate 811 is provided with a portion protruding outwardly from the skeleton 1, and the film 812 covers the bottom of the portion to form the protrusion 814 together with the portion, and the upper surface 101 of the skeleton 1 is connected with the protrusion 814. It can be understood that the protrusion 814 can also be provided on the skeleton 1 to realize the connection with the vibrating plate 811.

[0080] As shown in Figure 3 , the diaphragm assembly 81 divides the inner cavity into a front cavity 80a and a rear cavity 80b, and a sound outlet hole 802 is formed on the end surface of the first shell 80 to communicate with the outside and the front cavity 80a, and the vibrating device 83 is arranged in the rear cavity 80b. When the skeleton 1 of the vibrating device 83 is driven to vibrate by the coil 6, the vibrating plate 811 is driven to vibrate, which urges the air in the front cavity 80a to vibrate and sound is emitted through the sound outlet hole 802.

[0081] The vibrating sound emitting unit in the embodiment not only can realize bone conduction and air conduction sound transmission at the same time to meet the needs of different groups of people, but also has at least the following advantages: the coil 6 of the vibrating device 83 is arranged outside the armature 4, which has high polarization efficiency on the armature 4, and interacts with the armature 4 through the two groups of magnet assemblies, which is beneficial to improve the driving efficiency (transduction efficiency), has higher vibration sensitivity and lower energy consumption. The vibrating device 83 has small overall size and small cross section, which is beneficial to reduce the overall size of the vibrating sound emitting unit, thereby better meeting the needs of endurance, miniaturization and performance diversification.

[0082] In some embodiments, the skeleton 1 and the armature 4 are made of soft magnetic material, and after the coil 6 is energized, the N pole and the S pole of the armature 4 form a magnetic circuit through the skeleton 1, Figure 8 , the magnetic circuit is shown by the dashed line with an arrow, and the magnetic induction lines emitted from the N pole of the armature 4 are transmitted to the S pole along the skeleton 1. Through the magnetic conduction of the skeleton 1, the magnetic conduction efficiency can be greatly improved, the magnetic field utilization rate generated by the coil 6 is higher, the vibration sensitivity and driving efficiency can be further improved, and the product performance is further improved.

[0083] Further, the two groups of magnet assemblies also realize magnetic circuit through the skeleton 1, as shown in Figure 4 ,Figure 4 In the embodiment, the magnetic circuit of the two first magnets 20 is shown by the dotted line with arrow, which can greatly improve the utilization of the magnetic field of the magnets and improve the magnetic conductivity efficiency, thereby further improving the sensitivity and driving efficiency of the vibration device 83. The magnetic circuit of the two second magnets 20 can refer to the magnetic circuit of the first magnets 20, which will not be described here.

[0084] In some embodiments, the magnets are all flat plates, and the two magnets of each magnet assembly are arranged in parallel. Preferably, the spacing between the two magnets of the two magnet assemblies is the same. Further preferably, the magnets are rectangular plates. In other embodiments, the magnets can also have other shapes.

[0085] In some embodiments, the armature 4 is also a flat plate, which is arranged in parallel with the first magnets 20 and the second magnets 30. The flat plate-shaped armature 4 has a smaller thickness and a larger width, Figure 9 In the embodiment, the X-axis is the length direction (left-right direction) of the armature 4, the Y-axis is the width direction (front-rear direction) of the armature 4, and the Z-axis is the thickness direction (up-down direction) of the armature 4. On the one hand, the smaller thickness of the armature 4 can reduce the spacing between the two oppositely arranged magnets, making the overall vibration device 83 more flat and smaller in size. On the other hand, the area of the part of the armature 4 opposite to the magnets is larger, which is conducive to fully utilizing the magnetic field of the magnets and improving the driving force. Obviously, since the armature 4 vibrates along the Z-axis, the area of the part of the armature 4 opposite to the magnets is always the same during vibration, and the driving force is more stable. In other embodiments, the armature 4 can also have other shapes, which will not be listed one by one here.

[0086] In order to better achieve elastic connection between the skeleton 1 and the armature 4, the vibration sound unit comprises two groups of elastic members arranged at intervals along the length direction of the armature 4, and each group of elastic members comprises at least one elastic member 5. In this way, at least two parts of the skeleton 1 in the length direction can be supported and connected by the elastic members 5, and the stress is more stable, which is conducive to ensuring the reliable vibration of the skeleton 1.

[0087] The elastic member 5 is made of a non-magnetic conductive material to avoid affecting the polarization of the coil 6 on the armature 4 and ensure the reliable operation of the vibration device. The material of the elastic member 5 is preferably beryllium copper or stainless steel spring steel sheet, etc., which has excellent fatigue resistance and anti-falling performance. The structure of the elastic member 5 is not limited, for example, it can be a spring, a spring wire or a spring sheet, etc. As a preferred embodiment, the elastic member 5 is made of a spring sheet and is bent, which has good elasticity and can be bonded or welded by face bonding, is easy to install and is more reliable to use.

[0088] The elastic element 5 includes a first connecting portion 50, a second connecting portion 51, and an elastic portion 52 located between the first connecting portion 50 and the second connecting portion 51. The first connecting portion 50 is used to connect to the frame 1, for example, to the side 100 or end face 103 of the frame 1, and the second connecting portion 51 is used to connect to the armature 4. The elastic element 5 is integrally formed by bending a spring sheet. Preferably, the elastic portion 52 is bent into a U-shaped protrusion, which facilitates elastic deformation of the elastic portion 52 during vibration to provide elastic force. Preferably, the elastic portion 52 includes one or more U-shaped bends.

[0089] The structure of the elastic element 5 can be diversified. In some embodiments, the elastic element 5 includes two first connecting parts 50. The two first connecting parts 50 are respectively used to connect the skeleton 1 located on both sides of the thickness direction of the armature 4 or to connect the skeleton 1 on both sides of the width direction of the armature 4. In this way, the stability of the connection of the elastic element 5 can be improved, while reducing the number of elastic elements 5 required, which is beneficial to improving assembly efficiency.

[0090] It is understood that the structure of the vibration device 83 can be varied. Several embodiments are described below in further detail. For ease of description, the two outer surfaces of the frame 1 spaced apart along the X-axis are referred to as end faces 103. The two outer surfaces of the frame 1 spaced apart along the Y-axis are referred to as side faces 100. The two outer surfaces of the frame 1 spaced apart along the Z-axis are referred to as upper surface 101 and lower surface 102, respectively.

[0091] Example 1

[0092] like Figures 6 to 11 As shown, in this embodiment, the frame 1 of the vibration device 83 is tubular and has a split structure for easy assembly. It includes a semi-tubular upper frame 16 and a lower frame 17. The upper frame 16 and the lower frame 17 are symmetrically arranged and connected to each other to form the tubular frame 1. The channel of the tubular frame 1 is its receiving channel 10. Both sets of magnet assemblies are disposed in the receiving channel 10 of the frame 1, and the two magnets of the magnet assemblies are respectively connected to the upper frame 16 and the lower frame 17.

[0093] Mounting holes 12 are provided on the frame 1, and the mounting holes 12 penetrate the front and rear sides 100 of the frame 1. For details, please refer to [reference needed]. Figure 7The upper skeleton 16 and the lower skeleton 17 each include a base plate 1a and four side plates 1d connected to the base plate 1a, the four side plates 1d each extend to the same side of the base plate 1a, the four side plates 1d are divided into two groups, two side plates 1d in each group are oppositely arranged and respectively located on the front and back sides of the side plate 1d. When the upper skeleton 16 and the lower skeleton 17 are connected, the corresponding side plates 1d are connected to each other, thereby forming two closed ring-shaped tube bodies (the first tube body 14 and the second tube body 15), and the installation hole 12 is formed between the two tube bodies and the two base plates 1a. The coil 6 is arranged in the installation hole 12 of the skeleton 1, and the bottom of the coil 6 is connected and fixed to the two base plates 1a on the upper and lower sides.

[0094] The coil 6 can be installed in the installation hole 12 in a lateral installation manner along a direction perpendicular to the axis of the skeleton 1 (in the Y direction), or the coil 6 can be first installed with the upper skeleton 16 or the lower skeleton 17, and then the other skeleton is combined, which is more convenient for installation. In addition, the upper and lower sides of the coil 6 can be connected to the base plate 1a, which can improve the firmness of the fixation and also enhance the protection effect of the skeleton 1 on the coil 6 and the elastic member 5.

[0095] The skeleton 1 is provided with two outwardly convex outer convex plates 180 at both ends, the two outer convex plates 180 at the same end are respectively located on the two sides in the thickness direction of the armature 4 and are oppositely and parallelly arranged.

[0096] The vibration device 83 includes two groups of elastic member groups respectively connected to the two ends of the skeleton 1, each group of elastic member groups includes two elastic members 5 symmetrically arranged along the thickness direction of the armature 4. The elastic member 5 is annular with a notch 53, and the elastic member 5 as a whole is flat annular.

[0097] As shown in Figure 10 and Figure 11 , the two ends of the elastic member 5 are bent to be adjacent and not in contact, thereby forming the notch 53. The middle part and the two end parts of the elastic member 5 are flat plates, and the middle part and the end part of the elastic member 5 are oppositely arranged, and the elastic part 52 between the middle part and the end part is U-shaped, that is, the elastic part 52 has a U-shaped bend. One of the middle part and the two end parts is a first connecting part 50 for connecting with the skeleton 1, and the other is a second connecting part 51 for connecting with the armature 4. Figure 10 and Figure 11 , the end part of the elastic member 5 is the first connecting part 50, and the middle part is the second connecting part 51. The middle part (the second connecting part 51) of the upper elastic member 5 is connected to the upper surface 43 of the armature 4, and the two ends (the first connecting part 50) are connected to the lower surface of the upper outer convex plate 180; the middle part (the second connecting part 51) of the lower elastic member 5 is connected to the lower surface 44 of the armature 4, and the two ends (the first connecting part 50) are connected to the upper surface of the lower outer convex plate 180.

[0098] The two opposite elastic arms 520 of the elastic part 52 are parallel to the first connecting part 50 and the second connecting part 51. In other embodiments, the two elastic arms 520 of the elastic part 52 can be inclined. Figure 14 .

[0099] Since the width direction of the elastic member 5 is consistent with the length direction of the armature 4 and the skeleton 1, the skeleton 1 is not prone to vibration, twisting or swinging in the length direction during operation.

[0100] Embodiment 2

[0101] As shown in Figures 12 to 14 Compared with embodiment 1, the structure of the skeleton 1 and the elastic member 5 of the vibration device 83 is changed in this embodiment.

[0102] In this embodiment, the skeleton 1 of the vibration device 83 includes a base plate 1a and two U-shaped connecting frames 1b connected to both ends of the base plate 1a. After the two connecting frames 1b are connected to the base plate 1a, two closed loop-shaped pipe bodies are formed, which are a first pipe body 14 and a second pipe body 15. The passages in the first pipe body 14 and the second pipe body 15 cooperate to form the accommodation passage 10 of the skeleton 1. The first magnet assembly 2 and the second magnet assembly 3 are arranged in the accommodation passage 10. Specifically, the two magnet assemblies are arranged in the first pipe body 14 and the second pipe body 15, respectively. Both pipe bodies are square tubes, and both magnet assemblies have one magnet connected to the base plate 1a and the other magnet connected to the connecting frame 1b.

[0103] The two pipe bodies and the base plate 1a form a mounting groove 11, and the coil 6 is arranged in the mounting groove 11. The two end faces of the coil 6 are connected to the end faces of the connecting frame 1b exposed in the mounting groove 11, and the bottom face of the coil 6 is connected to the base plate 1a. The connection mode can be, for example, adhesive connection. Since the coil 6 is in contact with the outside on three sides, the assembly of the coil 6 is facilitated, and the heat dissipation effect is improved.

[0104] The armature 4 is a long strip-shaped flat plate, which is arranged in the first pipe body 14, the coil 6 and the second pipe body 15. The armature 4 has an outwardly protruding boss 42 at both ends, the width of the boss 42 is smaller than the width of other parts of the armature 4, and the boss 42 extends along the length direction to the outside of the skeleton 1 and the elastic member 5.

[0105] The vibration device includes two groups of elastic members arranged symmetrically at both ends of the skeleton 1. Each group of elastic members includes two elastic members 5 arranged along the thickness direction of the armature 4. The two elastic members 5 are arranged symmetrically. The structure and the connection mode with the skeleton 1 can be referred to embodiment 1. In this embodiment, the two elastic arms 520 of the elastic part 52 are inclined.

[0106] When the vibration device 82 of this embodiment is installed on the vibration sound generating unit, the two bosses 42 of the armature 4 are used to connect with the outer shell 80, and the upper surfaces of the first tube 14 and the second tube 15 are connected with the diaphragm assembly 81 to drive the diaphragm assembly 81 to vibrate.

[0107] Example 3

[0108] like Figures 15 to 17 As shown, the structure of the elastic element 5 has changed in this invention compared to Embodiment 1.

[0109] The vibration device 83 includes two sets of elastic element groups symmetrically arranged at both ends of the frame 1. Each set of elastic element groups includes two elastic elements 5 spaced apart along the width direction of the armature 4, and the two elastic elements 5 are symmetrically arranged. Figure 16 and Figure 17 As shown, the elastic element 5 is made of bent sheet metal, and includes two first connecting portions 50 at both ends and a second connecting portion 51 in the middle. Both the first connecting portions 50 and the second connecting portion 51 are sheet-like and arranged in parallel. Obviously, since the first connecting portions 50 and the second connecting portions 51 are connected by elastic portions 52, the elastic element 5 has two elastic portions 52, each of which includes a U-shaped bend. The two first connecting portions 50 of the elastic element 5 are respectively connected to the side surfaces 1800 of the two upper and lower outwardly protruding plates 180, while the second connecting portion 51 is connected to the side surface 45 of the armature 4.

[0110] Example 4

[0111] The frame 1 does not necessarily need to have mounting holes 11 or mounting slots 12, and can also be completely surrounded by the coil 6.

[0112] like Figure 18 As shown, compared with Embodiment 3, the skeleton 1 in this embodiment is composed of two semi-tubular upper skeleton 16 and lower skeleton 17 connected together, and it does not have mounting holes 12. The skeleton 1 is tubular in shape and surrounds the coil 6, providing more comprehensive protection for the coil 6. A wiring hole 13 for the coil 6 is also provided on the side 100 of the skeleton 1. Preferably, a wiring hole 13 is provided on both the front and rear sides 100 of the skeleton 1.

[0113] In this embodiment, as Figure 19 and Figure 20As shown, a protection pad 7 is arranged between the magnet and the armature 4, which separates the armature 4 and the magnet to prevent the armature 4 from directly contacting the magnet, thereby playing a protection role. The protection pad 7 is made of a non-magnetic conductive material, for example, aluminum, copper, stainless steel, etc., which can prevent the armature 4 from being attracted to the magnet due to contact between the armature 4 and the magnet in some extreme states. The protection pad 7 can be made of a hard material or a flexible material. As a preferred embodiment, the protection pad 7 is made of a flexible material, such as silica gel, rubber, etc., which can play a buffering role to prevent the armature 4 from directly impacting the magnet in extreme states, thereby preventing damage to the armature 4 or the magnet. By arranging the protection pad 7, the vibration device can still maintain good working performance when falling, being impacted, or working abnormally, thereby improving the reliability of the vibration device.

[0114] The protection pad 7 can be arranged on the armature 4 or the magnet.

[0115] As a preferred embodiment, as shown in Figure 19 As shown, the protection pad 7 is arranged on the surfaces of the two first magnets 20 and the two second magnets 30 facing the armature 4. In this way, when an abnormal situation occurs, such as falling, impact, etc., even if the armature 4 is displaced to a large extent, it will only contact the protection pad 7 and will not be attracted to the magnet, thereby effectively protecting the magnet and the armature 4 and further improving the drop resistance performance of the product.

[0116] In addition to being arranged on the magnet, the protection pad 7 can also be arranged on the armature 4, as shown in Figure 20 As shown, the protection pad 7 is arranged on the corresponding regions of the upper surface 43 and the lower surface 44 of the armature 4 and the magnet, which can also play a protection role against being attracted.

[0117] Obviously, the protection pad 7 can also be arranged on both the magnet and the armature 4.

[0118] Example 5

[0119] In addition to being arranged in the width direction to be the same as the length direction of the armature 4 and the skeleton 1, the elastic member 5 can also be arranged in the width direction to be the same as the width direction of the armature 4 and the skeleton 1.

[0120] As shown in Figure 21 and Figure 22As shown, compared with Embodiment 2, the installation method of the elastic element 5 is different in this embodiment. In this embodiment, the end face 41 of the armature 4 is provided with an outwardly protruding boss 42. The width of the boss 42 is smaller than the width of other parts of the armature 4, and it extends along the length direction to the outside of the frame 1. The elastic element group includes two elastic elements 5 spaced apart on both sides of the boss 42. The two elastic elements 5 in each elastic element group are located on both sides of the boss 42, and the two first connecting parts 50 of the elastic element 5 are connected to the end face 103 of the frame 1, while the second connecting part 51 is connected to the end face 41 of the armature 4.

[0121] Since the elastic element 5 is connected to the end face 103 of the frame 1, the outer protrusion 180 does not need to be provided on the end face 103 of the frame 1. The width direction of the elastic element 5 is the same as the width direction of the armature 4 and the frame 1, so it is not easy for displacement or torsion to occur in the width direction when the frame 1 vibrates.

[0122] Example 6

[0123] In addition to including two elastic elements 5, the elastic element group of the vibration device 83 can also be provided with only one elastic element 5.

[0124] like Figures 23 to 25 As shown, compared with Embodiment 5, in this embodiment, each of the two sets of elastic elements of the vibration device 83 includes an elastic element 5, and the two elastic elements 5 are respectively connected to the two ends of the frame 1.

[0125] The elastic element 5 is made by bending a spring sheet, and includes two first connecting portions 50 located at both ends and a second connecting portion 51 located in the middle. Obviously, since the first connecting portions 50 and the second connecting portions 51 are connected by elastic portions 52, the elastic element 5 has two elastic portions 52. Each elastic portion 52 includes three U-shaped bends. (As...) Figure 24 and Figure 25 As shown, both first connecting portions 50 of the elastic member 5 are perpendicular to the second connecting portion 51 and extend along the width direction of the elastic member 5. The two first connecting portions 50 are respectively connected to the front and rear sides 100 of the frame 1, and the second connecting portion 51 is connected to the upper surface 43 of the armature 4. Obviously, the second connecting portion 51 can also be located below the armature 4 and connected to its lower surface 44.

[0126] Example 7

[0127] In addition to being located at both ends of the frame 1, the two sets of elastic components of the vibration device 83 can also be located between the two sets of magnet components.

[0128] like Figure 26 and Figure 27As shown, in this embodiment, the first tube body 14 and the second tube body 15 are both provided with an inner protruding plate 181 extending into the mounting groove 11 and arranged opposite to the base plate 1a, preferably, the inner protruding plate 181 and the base plate 1a are arranged in parallel.

[0129] The vibration device includes two groups of elastic member groups, each of which includes two elastic members 5 arranged in an upper and lower manner. The upper elastic member 5 is located between the inner protruding plate 181 and the armature 4, the second connecting portion 51 of which is connected to the upper surface 43 of the armature 4, and the first connecting portion 50 is connected to the lower surface of the inner protruding plate 181. The elastic member 5 located below the armature 4 is connected between the base plate 1a and the armature 4, the second connecting portion 51 of which is connected to the lower surface 44 of the armature 4, and the first connecting portion 50 is connected to the upper surface of the base plate 1a.

[0130] It can be understood that the elastic member group can also include only one elastic member 5, which can be arranged on the upper side of the armature 4 and connected to the inner protruding plate 181 and the armature 4, or arranged on the lower side of the armature 4 and connected to the armature 4 and the base plate 1a. The elastic member 5 can also have other structures, for example Figure 15 or the structure in Figure 25 .

[0131] It can be understood that the above is only an example of the structure of the vibration device 83, and the vibration device 83 can also have other specific embodiments based on the structural principle of the present application.

[0132] The present application also proposes a wearable device including the vibration sound generating unit described above. The wearable device can be, for example, an earphone, a hearing aid, bone conduction glasses, a helmet, etc.

[0133] The above is only a specific embodiment of the present application, and any improvement made on the basis of the concept of the present application is considered to be within the protection scope of the present application.

Claims

1. A vibration sound-generating unit, characterized in that, include: The outer shell (80) has an inner cavity; A diaphragm assembly (81) is disposed within the inner cavity and connected to the outer shell (80); and, The vibration device (83) includes a frame (1) with a receiving channel (10), an armature (4) passing through the frame (1) and fixed relative to the outer shell (80), two sets of magnet assemblies disposed in the receiving channel (10), an elastic element (5) connecting the armature (4) and the frame (1), and a coil (6) surrounding the armature (4), the coil (6) being located between the two sets of magnet assemblies; The magnet assembly includes two magnets that are spaced apart from each other. The two magnets are spaced apart on both sides of the armature (4) along the vibration direction. Both sets of magnet assemblies are magnetized along the vibration direction, and the magnetization directions are opposite. The coil (6) is used to drive the frame (1) to vibrate relative to the armature (4). The frame (1) is connected to the diaphragm assembly (81) and drives the diaphragm assembly (81) to blow air and produce sound. The diaphragm assembly (81) includes an annular frame (810) connected to the inner wall of the housing (80), a vibrating plate (811) movably disposed within the annular frame (810), and a thin film (812) connecting the annular frame (810) and the vibrating plate (811). The frame (1) is connected to the vibrating plate (811) and drives the vibrating plate (811) to vibrate. At least one of the diaphragm assembly (81) and the frame (1) is provided with a protrusion (814) that protrudes toward and is connected to the other.

2. The vibration sound-generating unit as described in claim 1, characterized in that, The two ends of the armature (4) extend to the outside of the frame (1) and are non-magnetically connected to the outer shell (80).

3. The vibration sound-generating unit as described in claim 1, characterized in that, The vibration sound-generating unit includes two sets of elastic element groups spaced apart along the length direction of the armature (4), and each set of elastic element groups includes at least one elastic element (5).

4. The vibration sound-generating unit as described in claim 3, characterized in that, The elastic element (5) is made of non-magnetic material and is formed by bending a spring sheet. It includes a first connecting part (50) connected to the frame (1), a second connecting part (51) connected to the armature (4), and an elastic part (52) connected between the first connecting part (50) and the second connecting part (51). There are two first connecting parts (50), which are located at both ends of the elastic element (5).

5. The vibration sound-generating unit as described in claim 3, characterized in that, Each group of elastic elements includes two elastic elements (5), which are spaced apart on both sides of the armature (4) in the width or thickness direction.

6. The vibration sound-generating unit as described in claim 1, characterized in that, The diaphragm assembly (81) divides the inner cavity into a front cavity (80a) and a rear cavity (80b). The outer shell (80) is provided with a sound outlet (802) that connects to the outside and the front cavity (80a). The vibration device (83) is located in the rear cavity (80b).

7. The vibration sound-generating unit as described in claim 1, characterized in that, The outer shell (80) is made of a non-magnetic material and includes a first shell (800) and a second shell (801). At least one of the two surfaces on which the first shell (800) and the second shell (801) are connected is provided with two slots (805). The two ends of the armature (4) are respectively located in the two slots (805) and sandwiched between the first shell (800) and the second shell (801).

8. The vibration sound-generating unit as described in claim 1, characterized in that, The coil (6) is fixed relative to the frame (1), or the coil (6) is fixed relative to the armature (4).

9. The vibration sound-generating unit as described in claim 1, characterized in that, Both the frame (1) and the armature (4) are made of soft magnetic material. When the coil (6) is energized, the part of the armature (4) located in the two sets of magnet components is polarized into two poles with opposite polarities and forms a magnetic circuit through the frame (1). Both magnets of the magnet assembly are connected to the frame (1) and form a magnetic circuit through the frame (1).

10. The vibration sound-generating unit as described in claim 1, characterized in that, Both magnets of the magnet assembly are plate-shaped and arranged in parallel; the armature (4) is plate-shaped and arranged in parallel with the magnets, and the thickness direction of the armature (4) is consistent with its vibration direction.

11. A wearable device, characterized in that, Includes the vibration sound-generating unit as described in any one of claims 1 to 10.

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